CN1895019B - Threshing device - Google Patents

Abstract

The invention provides a threshing cylinder structure of a threshing device, which can perform sufficient threshing treatment on a threshing treatment object without increasing the load required by the threshing treatment even under the condition of supplying a large amount of threshing treatment objects, and has excellent treatment capability. A threshing chamber (14) is provided with a threshing cylinder (16) which rotates around a support shaft (15) which faces forward and backward as a fulcrum and performs threshing treatment on straws supplied from a supply port (25) in front along with the rotation of the threshing cylinder, and a receiving net (17) which allows the treated objects threshed by the threshing cylinder (2) to leak is arranged below the threshing cylinder, wherein the threshing cylinder comprises: a plurality of rod-shaped components (47) which are arranged in a state of being arranged at a specified interval in the circumferential direction of the threshing cylinder in a posture of being oriented along the front and back of the fulcrum shaft; the threshing teeth (18) are provided on the rod-shaped members so as to protrude from the rod-shaped members toward the outside of the threshing cylinder in a state of being arranged at predetermined intervals in the front-rear direction.

Description

Threshing device

technical field

The present invention relates to a threshing device comprising, in a threshing chamber, a threshing cylinder that rotates with a front-rear oriented fulcrum as a fulcrum and performs threshing treatment on grain straw supplied from a front supply port along with the rotation, wherein the threshing cylinder The bottom of the threshing cylinder is equipped with a receiving net that allows the processed material threshed by the above-mentioned threshing cylinder to leak down.

Background technique

As above-mentioned threshing apparatus, there is an apparatus which equips the outer periphery of the cylindrical straight part and constitutes a threshing cylinder by providing helical threshing teeth (for example, refer to Unexamined-Japanese-Patent No. 11-266666).

In the above structure, most of the threshing chamber is used as an arrangement space for the threshing cylinder, and only the remaining narrow space around the threshing cylinder can be used as a processing space for threshing. Therefore, in the case of a high-speed operation in which a large amount of straw is supplied as a threshing product, the processing space may be saturated. When this saturation occurs, it is easy to cause the problem that the threshing treatment material directly leaks from the receiving net without performing sufficient threshing treatment due to the threshing treatment material staying in the processing space, or the threshing treatment required The problem of damage to the transmission system of the threshing cylinder due to the increase of the load, etc.

Contents of the invention

The object of the present invention is to provide a threshing device that can perform sufficient threshing treatment on the threshing material without increasing the load required for the threshing process even when a large amount of threshing material is supplied, and has excellent processing capacity. .

The first characteristic configuration of the present invention is that the threshing device is equipped with a threshing cylinder that rotates with the fulcrum facing forward and backward as a fulcrum in the threshing chamber, and performs threshing treatment on the straw supplied from the front supply port along with the rotation, Below the threshing cylinder is equipped with a receiving net that allows the treated material threshed by the threshing cylinder to leak down, wherein the threshing cylinder is composed of a plurality of threshing cylinder holders and a plurality of threshing teeth In the posture along the front-back direction of the above-mentioned fulcrum, it is arranged in a state of being arranged at predetermined intervals in the circumferential direction of the above-mentioned threshing cylinder; It is equipped on each of these threshing cylinder holders so as to protrude from the above-mentioned threshing cylinder holder to the outside of the above-mentioned threshing cylinder, and an internal space connected to the threshing chamber is formed in the inside of the above-mentioned threshing cylinder. Fixed parts are arranged and fixed on the outside of the above-mentioned threshing cylinder at intervals, and a plurality of stalk knives are equipped and fixed on the above-mentioned fixed parts in such a way that they enter from the outside of the above-mentioned threshing gear into the rotation track of the corresponding threshing gear. The front and rear central parts of the fulcrum are equipped with a support plate that closes the upstream side part of the above-mentioned internal space from the rear side and is composed of a circular plate centered on the above-mentioned fulcrum, and the above-mentioned multiple In the threshing cylinder holder, the plurality of stalk cutters are disposed on the downstream side of the threshing process direction of the above-mentioned fixing member than the above-mentioned support plate.

According to this configuration, the threshing cylinder has a space connected to the threshing chamber inside, allows the threshing process to enter the internal space, and stirs the threshing process around it and the threshing process that has entered the internal space while rotating. The threshing process is performed on these threshing processed objects by hitting with a plurality of rod-shaped members and threshing gears.

That is, even when supplying a large amount of grain stems to a threshing chamber as a threshing process object, the internal space of a threshing cylinder can be effectively used as the processing space for threshing processing. Therefore, it is possible to avoid the stagnation of the threshing processed product in the processing space and the saturation of the processing space, and it is possible to prevent the threshing processed product from leaking from the receiving net without sufficient threshing treatment due to the stagnation of the threshing processed product or the saturation of the processing space. The problem of increasing the load required for the threshing process and causing damage to the transmission system of the threshing cylinder, etc. In addition, not only a plurality of processing gears but also a plurality of rod-shaped members forming the cylinder part of the barrel function as a threshing processing member acting on the threshing process object during the rotation operation of the barrel.

Moreover, the winding of a long culm to a rod-shaped member can be prevented and the stagnation of the threshing process object by this winding can be avoided by providing the several rod-shaped member in the state arrange|positioned at predetermined intervals in the circumferential direction of a threshing cylinder.

Therefore, even when the threshing process object is supplied in large quantities, sufficient threshing processing can be given to the threshing process object without causing the increase of the load required for threshing processing. Thereby, while being able to avoid the damage of the threshing cylinder transmission system etc. by the increase of load, improvement of threshing performance and threshing efficiency can be aimed at. As a result, the barrel structure of the threshing apparatus excellent in durability and processing capability can be provided.

According to this structure, the harvested straw thrown into the threshing device is subjected to threshing treatment under the action of the rotation of the threshing cylinder, and is transported while being pushed against the stalk cutter to be cut, and after the threshing treatment, it is cut. The broken state is discharged outside the vehicle.

That is, since the shredding device dedicated to the shredding process is not equipped, the shredding and discharging of the straw can be performed well Therefore, compared with the case of having a dedicated shredding device, cost reduction and structure simplification can be realized, and the reduction of the overall load of the combine harvester due to the weight reduction of the vehicle body can be realized.

In addition, it is possible to prevent the winding of the harvested straw to the threshing cylinder and the entanglement of the long stems, etc., which are caused by performing the threshing process on the harvested straw in the state of the long stem, and it is possible to avoid damage caused by the winding or entanglement. The increase of the conveying load and the third type of loss caused by the grain entering between the entangled stalks and being discharged out of the vehicle together with the stalks, and it is not necessary to directly discharge out of the vehicle in the state of long stalks Disposal of stalks after required harvesting operations.

Therefore, it is possible to simplify the structure, reduce the cost, and reduce the load on the combine harvester as a whole due to the light weight of the vehicle body. With the straw discharge treatment, equipment with good workability can be obtained, and the improvement of grain recovery efficiency due to the reduction of the third type of loss can be realized.

The second characteristic configuration of the present invention is that, at the front end of the above-mentioned threshing cylinder, a raking part with a shape that becomes thinner as it approaches the end is equipped, and the raking part is equipped with a device that moves from the above-mentioned feeding The straw from the mouth is raked and conveyed to the rear by the spiral teeth.

According to this configuration, when the threshing cylinder rotates, the outside air sucked in from the supply port along with the rotation of the helical teeth flows smoothly into the threshing cylinder together with the straw that is raked and transported by the raking portion. In the surrounding and internal spaces, thereby, it is possible to prevent the straw chips and the like generated in the threshing process from flowing out from the supply port, and to more quickly convey the threshing process material to the downstream side in the threshing process direction, that is, to the rear.

Therefore, it is possible to avoid poor straw supply caused by straw chips and the like flowing out from the supply port, and it is possible to promote conveyance of the threshing processed product in the threshing chamber and dust such as straw chips generated in the threshing process from the rear of the body (threshing process). As a result, the threshing performance and threshing efficiency can be further improved.

A third characteristic configuration of the present invention is that the above-mentioned rod-shaped member is equipped so that its orientation can be changed so as to take an inverted posture in which the front and back are reversed.

Among the plurality of threshing teeth equipped on the threshing cylinder, the threshing gear located on the upstream side in the threshing process direction with a large amount of threshing processed material is more likely to wear than the threshing gear located on the downstream side in the threshing process direction with a small amount of threshing processed material.

Therefore, by equipping the rod-shaped member so that its orientation can be changed to an upside-down posture, it is possible to change the orientation of the rod-shaped member when the wear of the threshing teeth on the upstream side in the threshing process direction is significant. The position of the several processing gear equipped on this bar-shaped member is changed at once to the state where the processing gear on the upstream side in the threshing process direction with significant wear and the processing gear on the downstream side in the threshing process direction with less wear are interchanged.

Therefore, by simply changing the direction of the rod-shaped member, the threshing gear on the downstream side in the threshing process direction with less wear can be used as the threshing gear on the upstream side in the threshing process direction with a large amount of threshing material. Good processing capacity on the upstream side of the threshing treatment direction, and the work for the above purpose is easy to perform, and the maintainability is excellent.

The 4th characteristic structure of this invention is formed so that the protrusion part may have the sweep angle which inclines toward the rotation direction upstream side in the processing gear arrange|positioned at the rear part side of the said barrel.

According to this configuration, on the rear side of the threshing cylinder, that is, on the downstream side in the threshing process direction, the stalks are suppressed from being caught on the processing teeth having a sweep angle, thereby preventing the straw from being caught on the processing teeth on the rear side. The resulting stagnation of the threshed straw (threshed straw) can promote the discharge of the threshed straw from the threshing direction end portion.

Therefore, the discharge of the threshed straw is promoted, and the flow of the threshed product in the threshing chamber is promoted, so that the improvement of the threshing efficiency is further achieved.

According to a fifth characteristic configuration of the present invention, the threshing gear disposed on the front side of the threshing cylinder is formed to have a protruding end portion that pushes out the processed material in the threshing chamber backward as it rotates around the fulcrum. Conveyor for conveying.

According to this structure, conveyance of the threshing process object to the downstream side of a threshing process direction is accelerated|stimulated via the processing gear which has a conveyance part in the front part side of a barrel, ie, the threshing process direction upstream side.

In addition, this processing tooth has a conveyance part at the protruding end part, and it becomes the state which expanded the impact action part to the threshing process material, and thus, can pass the impact by enlarging the threshing process direction upstream side with a large amount of threshing process material. The threshing teeth of the action part can effectively beat a large amount of threshing products.

Therefore, improvement of threshing performance and threshing efficiency can be aimed at further by simply improving the processing teeth arrange|positioned at the front part side of a barrel.

The 6th characteristic structure of this invention is equipped so that the said processing gear may be replaced.

According to this structure, when a certain processing gear wears extremely, deformation|transformation, etc., only the said processing gear can be exchanged.

Moreover, in the structure which arrange|positioned the processing gear which has a sweep angle at the rear part side of a barrel, or the structure which arrange|positioned the processing gear which has a conveyance part in the protruding end part at the front part side of a barrel, etc., the If the threshing gear on the upstream side of the processing direction is significantly worn and the processing capacity on the upstream side of the threshing processing direction is reduced, by changing the orientation of the rod-shaped member, it will return to the original position relative to the threshing cylinder due to the orientation change. On the opposite position, the threshing gear with the sweep angle and the threshing gear with the conveying part at the protruding end are replaced, and the original processing capacity can be restored relatively simply.

Therefore, when a certain processing gear is extremely worn or deformed, parts can be replaced at a minimum, and the economy is good, and the processing gear with a sweep angle is equipped on the rear side of the processing cylinder, or in the The structure in which the threshing gear with the conveying part at the protruding end is arranged on the front side of the threshing cylinder can ensure good processing capacity for a long time, and the work for this purpose is easy to perform and excellent in maintainability.

The 7th characteristic structure of this invention is equipped so that the length of the said threshing gear can be adjusted.

According to this structure, even if a processing gear wears, the length of this processing gear can be easily returned to the original length, and the original processing ability before a processing gear is worn can be restored comparatively easily.

In addition, the length of each processing gear can be set to an appropriate length corresponding to their arrangement, and thus, if the length of the processing gear disposed on the upstream side in the threshing process direction with a large amount of threshing processed material is increased, it can pass through relatively The long threshing teeth can effectively hit a large amount of threshing processing objects, so the improvement of threshing performance can be realized. In addition, if the length of the threshing teeth arranged on the downstream side of the threshing treatment direction is shortened, the hooks due to the threshing teeth can be suppressed. The retention of the threshed straw (threshed straw) caused by hanging, promotes the discharge of the threshed straw from the end of the threshing direction, and promotes the flow of the threshing process in the threshing chamber, so threshing can be realized Increased efficiency.

Therefore, even if the processing gear is worn out, the original processing capacity before the wear can be restored without parts replacement, thereby obtaining an economical device, and by setting an appropriate length corresponding to the arrangement of the processing gear, it is possible to Further realize the improvement of threshing performance and threshing efficiency, and obtain equipment with better processing capacity.

The eighth characteristic configuration of the present invention is that it is equipped with a swing sorting mechanism that receives and sorts the processed objects that have leaked from the above-mentioned receiving net; The plate is formed with multiple dropouts by punching out multiple sorting pieces in an upward facing scale.

According to this structure, since a single or a plurality of sorting plates can be used to constitute the roughing section, it is different from arranging a plurality of fish scale plates made of strip-shaped steel plates to form a roughing section with a certain interval in the front-rear direction. Compared with the case of the rough selection section, etc., the constituent parts of the rough selection section can be greatly reduced, and correspondingly, the simplification of the structure and the reduction of the cost can be realized.

In addition, in the sorting process performed by the operation of the swing sorting mechanism, the sorted material comes into contact with each sorting piece, and the transport to the downstream side in the transport direction is appropriately suppressed, and at the same time, it is appropriately screened in the left-right direction and the up-down direction. Therefore, the sorting process can be well screened, and the sorting accuracy of the sorting process is improved.

Therefore, it is possible to achieve simplification of the structure and cost reduction of the rough separation unit of the swing separation mechanism, and it is possible to improve the separation accuracy.

Description of drawings

Fig. 1 is an overall side view of a full stalk feeding type combine harvester.

Fig. 1 is an overall top view of a full stalk feeding combine harvester.

Fig. 3 is a longitudinal sectional side view of the threshing device.

Fig. 4 is a partial longitudinal sectional front view of the threshing device.

It is a principal part plan view which shows the arrangement|positioning of the structure of a threshing cylinder, and a stem cutter.

Fig. 6 is a longitudinal sectional plan view of main parts showing the arrangement of the structure of the threshing cylinder and the stalk cutter.

Fig. 7 is a main part longitudinal sectional front view showing the configuration of the threshing cylinder and the arrangement of the stalk cutter.

Fig. 8 is a perspective view of main parts showing the structure of the concave plate.

Fig. 9 is a perspective view showing the shape of the stem cutter.

Fig. 10 is a perspective view of main parts showing the structure of a coarse screen for roughing.

Fig. 11 is a rear view of main parts showing the structure of the awning.

It is a main part side view which shows the structure of the barrel of another embodiment of this invention.

Fig. 13 is a longitudinal sectional rear view showing a barrel of another embodiment employing angled material as a rod-shaped member.

Fig. 14 is a longitudinally sectional front view showing a threshing cylinder of another embodiment equipped with eight rod-shaped members.

Detailed ways

Fig. 1 shows an overall side view of a full-rod feed type combine harvester for harvesting rice or wheat. The combine harvester is configured as follows: the engine 2 etc. 1, and equipped with a pair of left and right crawler-type traveling devices 3 driven by the power transmitted from the engine 2 through the transmission device outside the figure, and connected to the front part of the vehicle body frame 1 in a manner that can lift and swing The reaping and conveying device 4 that reaps the planted straw as the harvesting object and transports it to the rear is loaded on the left half of the vehicle body frame 1. The threshing device 5 that sorts the processed product obtained by the threshing process is mounted on the right half of the vehicle body frame 1 to store the grains from the threshing device 5 and to bag the stored grains. The device 6 forms a boarding and driving section 7 at the front portion of the bagging device 6 of the vehicle body frame 1 .

The left and right crawler-type traveling devices 3 are configured to be in a straight state when driven at a constant speed and in a steered state when they are driven differentially in response to a left-right swing operation of a joystick 8 provided in the ride-on driving unit 7 .

As shown in FIGS. 1 and 2 , the reaping and transporting device 4 is configured such that, as the vehicle body moves, the grain dividers 9 equipped at the left and right ends of the front portion separate the planted straws that are harvested and the planted straws that are not harvested. The stalks are separated, and the rotating reel 10 equipped at the top of the front part rakes the planted stalks that are separated by the left and right grain dividers 9 to the rear, and the hair clipper-shaped cutting mechanism 11 equipped at the bottom will The plant root side of the planted straw as the harvesting object is cut, and the auger 12 equipped at the rear of the cutting mechanism 11 gathers the planted straw (reaped straw) cut by the cutting mechanism 11 to a predetermined position in the left and right direction, and Sending out at the specified position to the rear, the feeder 13 composed of the conveyor between the specified position and the front upper part of the threshing device 5 transports the harvested straw from the auger 12 towards the threshing device 5; or it is configured as , according to the swing action of the joystick 8 in the front and rear direction, the hydraulic lifting pressure cylinder (not shown) erected between the vehicle body frame 1 and the feeder 13 expands and contracts, so that the connecting point of the threshing device 5 and the feeder 13 It is the fulcrum lifting and swinging, and the cutting height is adjusted through the lifting and swinging, that is, the height position of the cutting mechanism 11 relative to the planted straw is changed.

Fig. 3 shows the longitudinal sectional side view of the threshing device loaded on the full stalk feeding type combine harvester, and Fig. 4 shows its partial longitudinal sectional front view, the threshing device includes: In the threshing chamber 14 of the upper part; the concave plate (an example of receiving net) 17 is configured to cover the threshing cylinder 16 from below; the swing sorting mechanism 19 is equipped under the concave plate 17; the windmill 20 is equipped in the swing separation The front bottom of the selection mechanism 19; the first recovery part 21 is formed under the front part side of the swing separation mechanism 19; the second recovery part 22 is formed under the rear part side of the swing separation mechanism 19; the discharge port 23 , formed at the rear of the swing sorting mechanism 19; etc.

The threshing chamber 14 is connected to the rear end part of the feeder 13 which transports and supplies the harvested straw harvested and recovered by the harvesting and recovery part outside the figure to the supply port 25 formed at the lower part of the front end, and the feeder 13 , supply all planted straws (cut straws) harvested by the harvesting part outside the figure as threshing products.

The threshing cylinder 16 is rotationally driven in a right-handed (right-handed) manner in a front view with the fulcrum 15 rotatably erected between the front and rear side walls 26, 12, thereby controlling the supply to the threshing chamber 14. The harvested straw is subjected to threshing treatment, and the grains are separated from the harvested straw, and the harvested straw is transported to the rear, which is the downstream side in the threshing process direction, while performing single-graining.

The concave plate 17 accepts the harvested straw supplied to the threshing chamber 14, assists the threshing cylinder 16 in threshing the harvested straw, and makes the single-grained grains or grains with branches obtained by the threshing process , or the broken straws produced by the threshing process leak down to the swing sorting mechanism 19 to prevent the long straws from leaking down.

The swing sorting mechanism 19 is equipped with a coarsely selected grain shaking plate 30, a coarsely selected coarse screen 31, and a coarsely selected stalk remover 32 in the sieve box 29 driven by a cam-type drive mechanism 28 swinging in the front and rear direction. , the grain shaking plate 33 for selection, and the lower sieve 34 for selection, etc., to separate the grains mixed with single-grained grains or grains with branches, etc. that are leaked from the concave plate 17 The processed product is subjected to a screening process, and the sorted processed product is sorted into single-grained grains as the first type, mixed materials such as branched grains and broken straw as the second type, and as the second type. Crushed straw and straw chips of the third category.

The windmill 20 generates a sorting wind by being rotationally driven with its fulcrum 20A as a fulcrum, and the sorting process objects leaked from the concave plate 17 and the first class and second class objects sorted out by the swing sorting mechanism 19 Objects, etc., are sorted by wind.

The first recovery unit 21 takes the single-grained grains that have dropped from the lower sieve 34 of the swing sorting mechanism 19 as the first category in a state where dust such as straw chips has been removed by the sorting wind from the windmill 20 Object recovery, through the first screw rod 36 that is arranged at its bottom with the left and right orientation, the first kind of object that is recovered is conveyed to the lifting screw rod 37 that is connected to the outside figure that is connected to its right end.

The second recovery unit 22, in a state where dust such as straw chips has been removed by the sorting wind from the windmill 20, does not drop off the lower sieve 34 of the swing sorting mechanism 19 but from the rear end of the lower sieve 34. Mixed materials such as grains with branches and broken straws that flow down, and mixed materials such as grains with branches and broken straws that leak from the stalk remover 32 of the swing sorting mechanism 19 are classified as the second category. Object recovery, through the 2nd screw rod 38 that is arranged at its bottom with the left and right direction, the 2nd kind thing that is recovered is conveyed to the 2nd return screw rod that is connected to its right-hand side.

The lifting screw 37 lifts the 1st type material conveyed by the 1st screw 36, and supplies it to the grain tank arranged in a row on the right side of a threshing apparatus from above. The 2nd returning screw has the reprocessing part that implements the threshing process again to the 2nd kind that is conveyed by the 2nd screw 38, and the 2nd kind after being threshed by its reprocessing part lifts and returns to the swinging sorting mechanism 19 .

The outlet 23 discharges the long straws flowing down from the rear end of the concave plate 17, as well as the broken straws and straw chips sorted and transported to the rear of the swing sorting mechanism 19 after screening and wind sorting, to the outside of the machine. .

As shown in FIGS. 3 to 7 , the threshing cylinder 16 includes a truncated conical (an example of a shape that becomes thinner toward the end) raking portion 41 provided at the front end thereof, and a rear end connected to the raking portion 41 . The threshing processing part 42 at the end is integrally equipped with a device for raking and transporting the harvested straw supplied from the supply port 25 toward the rear threshing processing part 42 when the threshing cylinder 16 rotates on the outer peripheral surface of the raking part 41. 2 helical teeth 43.

The threshing unit 42 includes: a first support plate 44 integrally provided at the front of the support shaft 15; a second support plate 45 integrally provided at the front and rear central portions of the support shaft 15; and a third support plate 46 integrally provided at the support shaft 15. 15 rear end portion; 6 threshing tube holders 47, that is, circular tube parts (an example of rod-shaped parts) 47, are spaced apart from each other in the circumferential direction of the threshing tube 16 in a posture along the front and rear of the support shaft 15 (specified An example of intervals) are supported by these support plates 45-46 in a state of being arranged; a plurality of threshing gears 48 are equipped on each threshing cylinder holder 47, and are arranged at a certain interval (an example of a predetermined interval) in the front-rear direction. , protruding from the threshing cylinder frame 47 to the outside of the threshing cylinder 16; etc.

According to this structure, the threshing cylinder 16 has a space S connected to the threshing chamber 14 inside the threshing treatment part 42, and the threshing processed material is allowed to enter the internal space S, so that when the threshing cylinder 16 is rotated, the surrounding area The threshing processed object and the threshing processed object entered into the internal space S are agitated, and the threshing processed object is subjected to threshing treatment by beating by the threshing cylinder holder 47 and the threshing gear 48 .

That is, even when a large amount of harvested straw is supplied to the threshing chamber 14 as a threshing product, the internal space S of the threshing cylinder 16 can be effectively used as a processing space for threshing, so that the threshing process can be avoided. The stagnation of the processed material in the processing space or the saturation of the processing space can prevent the problem that the threshing processed product falls from the concave plate 17 without sufficient threshing treatment due to the retention of the threshing processed material or the saturation of the processing space, and The problem that the load required for threshing process increases and the transmission system which drives with respect to the threshing cylinder 16 is damaged, etc.

In addition, when the threshing cylinder 16 rotates, not only the plurality of threshing teeth 48, but also the six threshing cylinder holders 47 that form the cylinder part of the threshing cylinder 16, that is, the threshing treatment part 42, act as a threshing process for the threshing process. Parts work together, so it is possible to improve threshing performance and threshing efficiency.

And, when the threshing cylinder 16 rotates, the outside air sucked in from the supply port 25 along with the rotation of the screw teeth 43 together with the harvested straw that is raked and conveyed under the action of the rake part 41 smoothly It flows into the periphery of the threshing cylinder 16 and the internal space S, thereby preventing the straw chips and the like generated by the threshing process from flowing out from the supply port 25 to the feeder 13, and more quickly moving the threshing process to the threshing process direction. The downstream side is the conveyance of the rear.

And, the external air sucked from the supply port 25 passes through the inside of the supply device 13 connected to the supply port 25, and the supply device 13 is connected to the output port (not shown) and the supply port formed at the recovery end portion of the harvesting and recovery section. 25 communicates, so when the threshing cylinder 16 rotates, under the suction effect generated by the rotation of the helical teeth 43, the dust such as straw chips generated in the harvesting process and recovery process carried out by the harvesting and recycling part is also with the Together with the outside air, it flows from the output port of the harvesting and recovery unit through the inner space of the feeder 13 and the supply port 25 into the surrounding area and the inner space S of the threshing cylinder 16. It is possible to suppress the poor conveyance of harvested hay stems caused by the attached accumulation or the flying, and the deterioration of the work environment and the visual field caused by the flying.

Each support plate 44～46 is a circle with the support shaft 15 as the center, and on its outer peripheral side at a position equal to the distance from the support shaft 15, it is formed to support under the state of being arranged at a certain interval along its circumferential direction. Six connection parts 44A-46A of the threshing cylinder holder 47 are connected.

That is, on the outer peripheral side of each support plate 44-46, six threshing cylinder holders 47 are provided in a state of being arranged at a certain interval along the circumferential direction, so that the cylinder diameter of the threshing cylinder 16 is large, thereby, It is possible to prevent the harvested straw from being wound around the threshing cylinder 16 .

Each threshing cylinder holder 47 is formed in a straight line, and is equipped with a first connecting plate 80 integrally at its front end, a second connecting plate 81 is integrally equipped at its front and rear middle parts, and a third connecting plate 81 is integrally equipped at its rear end. The plate 82, the first connecting plate 80 and the third connecting plate 82 are formed so that they can be bolted to the connecting portion 44A of the first supporting plate 44 and the connecting portion 46A of the third supporting plate 46, and the second connecting plate 81 is formed as , can be bolted from the front and rear sides with respect to the connecting portion 45A of the second support plate 45, by bolting the first connecting plate 80 on the connecting portion 44A of the first supporting plate 44, the second connecting plate 81 can be connected from the rear Engaged and bolted on the connecting portion 45A of the second support plate 45, the third connecting plate 82 is bolted on the connecting portion 46A of the third supporting plate 46, so that the front and rear direction can be consistent with the front and rear direction of the threshing cylinder 16 In addition, by bolting the first connecting plate 80 to the connecting portion 46A of the third supporting plate 46, the second connecting plate 81 is joined from the front and bolted to the connecting portion 45A of the second supporting plate 45. Above, the 3rd connection plate 82 is bolt-connected to the connection part 44A of the 1st support plate 44, and it can equip with the reverse posture whose front-back direction is opposite to the front-back direction of the barrel 16.

That is, each barrel holder 47 is equipped so that its orientation can be changed to a normal posture in which the front-rear direction coincides with the front-rear direction of the barrel 16 , and an inverted posture in which the front-back direction is opposite to the front-back direction of the barrel 16 .

On each threshing cylinder holder 47, a plurality of mounting holes 47A for installing the threshing gear are arranged in a state of being arranged at a certain pitch P along the front-rear direction, and are pierced in the following state, that is, from the front end of the threshing cylinder holder 47 to the front end of the threshing cylinder holder 47. The distance L1 of the center of 47 A of attachment holes of the front and the distance L2 from the rear end of the threshing cylinder stand 47 to the center of 47 A of installation holes of the rearmost are different by half pitch.

In addition, the six threshing cylinder holders 47 are connected and supported by the connecting plates 80 to 82 in a state in which the front and rear directions of the adjacent threshing cylinder holders are reversed, thereby adopting the same components as the six threshing cylinder holders 47, and the threshing cylinder 16 Each processing gear 48 is in the state which deviated half a pitch in the front-back direction from the processing gear 48 equipped on the adjacent processing cylinder frame 47.

That is, the threshing gears 48 are arranged in a helical shape in which the positions are shifted by half a pitch and a half pitch on the entire threshing cylinder 16 , so that, during the rotation operation of the threshing cylinder 16 , not only the threshing process is performed on the harvested straw, It also exhibits the transport function of sending the harvested straw to the downstream side in the threshing process direction, that is, to the rear.

In addition, by providing each threshing cylinder holder 47 so that the orientation can be changed to a normal posture and an inverted posture, when the wear of the processing teeth 48 located on the upstream side in the threshing process direction is significant due to the large amount of threshing processed material, By changing the orientation of each threshing cylinder holder 47, the positions of a plurality of threshing teeth 48 equipped on each threshing cylinder holder 47 can be changed at once to the threshing teeth 48 on the upstream side of the threshing process direction that are easy to wear and the ones that are difficult to wear. In the state where the processing gears 48 on the downstream side in the threshing processing direction are interchanged, the processing gears 48 on the downstream side in the processing direction with less wear can be effectively used as the processing gears 48 on the upstream side in the threshing processing direction with a large amount of threshing processed material. use.

Each processing gear 48 is comprised by the round bar steel material which penetrates in the installation hole 47A of the barrel holder 47, and among these processing gears 48, the processing gear provided in the front part side of the barrel 16, ie, the front-end part of the processing part 42 48A is a stepped form having a small-diameter portion inserted into the corresponding mounting hole 47A and a large-diameter portion 48b that restricts insertion into the mounting hole 47A. The external threaded portion 48a of the cylinder is detachably fixed on the corresponding threshing cylinder holder 47 by a nut 64 at a predetermined position.

The threshing teeth 48B arranged in the middle part of the threshing cylinder 16, that is, the middle part of the threshing treatment part 42 are formed in a straight line, and are located on the line connecting the center of the support shaft 15 and the center of the threshing cylinder holder 47, It is welded and fixed on the prescribed position of the corresponding threshing cylinder holder 47 .

The threshing tooth 48C provided at the rear end part of the barrel 16, that is, the rear end part of the threshing process part 42 has a small diameter part inserted in the corresponding attachment hole 47A, and a large diameter part which restricts insertion to the attachment hole 47A. The stepped form of the portion 48b is formed on the small diameter portion with a male thread portion 48a for fixing relative to the threshing cylinder frame 47, and the large diameter portion 48b is bent to form a "く" shape, and has a protruding portion facing the threshing cylinder. In the state where the rotation direction upstream side of the cylinder 5 is inclined at the sweep angle θb (see FIG. 7 ), it is detachably fixed to a predetermined position of the corresponding threshing cylinder holder 47 by a nut 64 .

That is, each threshing gear 48A and each threshing gear 48C located at the front and rear ends of the threshing process part 42 are detachable, so as the threshing gear 48 (located in the middle part of the threshing process part 42) on the upstream side of the threshing process direction, The countermeasures when the threshing gears 48B on the upstream side of the threshing process direction are significantly worn during long-term use can change the orientation of each threshing cylinder frame 47, and change the positions of the multiple threshing gears 48 to be easy to wear. In the case where the threshing teeth 48 on the upstream side of the threshing treatment direction and the threshing teeth 48 on the downstream side of the threshing treatment direction that are difficult to wear are interchanged, as long as the orientation of each threshing cylinder frame 47 is changed to the position relative to the threshing These processing gears 48A and 48C can be returned to the original position by replacing each processing gear 48A and each processing gear 48C at the position opposite to the original position in terms of the cylinder 16 at both front and rear ends.

In addition, on the downstream side in the threshing process direction where the amount of threshing straw increases, the threshing gear 48C located at the rear end of the threshing cylinder 5 suppresses the hooking of the threshing straw due to the existence of the sweep angle θb, so it can be suppressed. The stagnation of the hooked threshed straw can promote the discharge of the threshed straw (discharge straw) from the discharge port 23 .

As a result, there is excellent processing ability capable of realizing improvement of threshing performance and threshing efficiency, and it is also excellent in maintainability for ensuring the excellent processing ability for a long period of time.

As shown in Fig. 3, Fig. 4 and Fig. 8, the concave plate 17 is provided with a plurality of longitudinal grooves made of strip-shaped steel plates in a front-rear direction on the base frame 65 with a certain interval in the circumferential direction of the threshing cylinder 16. The bar 66 is equipped with a plurality of first horizontal bars 67 formed by bending a strip-shaped steel plate bent into an arc shape with a certain interval in the direction of the fulcrum of the threshing cylinder 16, that is, in the front-rear direction. Between the adjacent first horizontal bars 67, a plurality of second horizontal bars 68 formed by curved piano wires formed in an arc shape are arranged in a left-right direction with a certain interval in the front-rear direction. It is formed in a horizontally long rectangle, and the length in the direction along the circumferential direction of the barrel 16 is longer than the length in the direction along the front-back direction.

That is, by configuring the concave plate 17 so that its mesh is a horizontally long rectangle that is long in the direction of rotation of the threshing cylinder 16, the singulated grains etc. The plate 17 leaks down, and thereby, it is possible to avoid the husked grains generated by suppressing the leaking of the single-grained grains from the concave plate 17 .

As shown in Figure 3 and Figure 4, in this threshing device, the power from the gearbox outside the figure is transmitted to the support shaft 20A of the windmill 20 through the first transmission mechanism 69 of the belt transmission type, and the power from the support shaft 20A is transmitted through The second transmission mechanism 70 of the belt transmission type and the third transmission mechanism 71 of the shaft transmission type are transmitted to the spindle 15 of the threshing cylinder 16, and are transmitted to the feeder 13 through the second transmission mechanism 70 and the transmission clutch 72 of the belt tensioning type. .

In addition, reference numeral 24 shown in FIG. 3 and FIG. 4 is a top plate provided on the upper part of the threshing device in an openable and closable manner. The some dust sending valve 49 which guides the harvested straw in the threshing chamber 14 to the downstream side of a threshing process direction along with the rotation operation of the threshing cylinder 16. Moreover, this dust sending valve 49 may be set as the movable type which adjusts the opening degree according to the amount of the threshing process material in the threshing chamber 14, and can further improve threshing performance and threshing efficiency.

As shown in FIGS. 4 to 7 and 9 , on the left and right outer sides of the threshing cylinder 16 , at a position separated from the rotation track K of the threshing gear 48 by a predetermined interval, there are provided front-to-back guides for supporting the receiving net 17 and the top plate 24 . The support frames 50, 51, among these support frames 50, 51, the support frame (an example of a fixed member) 51 disposed on the downstream side of the barrel 16 in the rotation direction, that is, on the right side of the barrel 16, is equipped with a plurality of stalk cutters. 52.

Each stalk cutter 52 is at the downstream side of the threshing processing direction on the support frame 51 in a state that is offset by 1/4 pitch (=1/4P) relative to the position of the corresponding threshing gear 48, so as to enter from the outside of the threshing gear 48 into the The form between the rotation loci K of the corresponding threshing gear 48 is arrange|positioned at the position on the upstream side of the threshing process direction rather than the stem discharge port 18.

According to this configuration, the harvested straw supplied from the supply port 25 into the threshing chamber 14 is conveyed while being subjected to the threshing process by the rotation operation of the threshing cylinder 16, and when conveyed to the downstream side in the threshing process direction by this conveyance, Through the subsequent threshing process, every time it is transported to the upper side of the threshing chamber 14, it is pushed against the stalk cutter 52 to be cut, and at the same time, it is transported toward the stalk discharge port 18, and as it reaches the stalk discharge port 18, it is chopped. The state of the stalks flows down from the discharge port 18 to the discharge port 23, and is discharged from the discharge port 23 to the outside of the vehicle.

That is, on the downstream side of the threshing process direction, the harvested straw is shredded with the stalk cutter 52 while performing the threshing process, so it is possible to prevent the harvested straw from falling into the threshing cylinder due to the threshing process performed in the state of the long stalk. The winding on the 16 and the entanglement of the long stalks can avoid the increase of the conveying load caused by the winding or entanglement, and the harvesting work required when the long stalks are discharged outside the vehicle is no longer necessary. Subsequent stalk treatment.

In addition, on the upstream side of the threshing treatment direction where there are many unthreshed straws, the cutting of the harvested straw by the straw cutter 52 is not performed, so it is possible to avoid being easily cut by the straw cutter 52 due to adhesion to the harvested straw. The possibility that the grains that have not been removed will be damaged by the cutting action of the stalk cutter 52 together with the harvested stalks. In addition, even if the grains enter the upstream side of the threshing process direction, the grains will become lumpy due to the entanglement of the long stalks, etc. Between the straws of the threshing process, the grains that have entered between the blocky straws can also be taken out by the cutting action of the stalk cutter 52 on the downstream side of the threshing treatment direction. The occurrence of category 3 losses caused by the grains being discharged out of the vehicle together with the lumpy straw.

Furthermore, by disposing the stalk cutter 52 on the upstream side of the threshing treatment direction of the stalk discharge port 18, the grains taken out from the block-shaped stalk under the cutting action of the stalk cutter 52 are directed toward the swinging sorting mechanism 19 from the receiving net 17 Therefore, it is possible to avoid the occurrence of the third type of loss caused by the grains taken out from the blocky stalks flowing down from the stalk discharge port 18.

Furthermore, since there is no need to equip a dedicated chopping device for chopping the discharged straw after threshing, correspondingly, the simplification of the structure and the reduction of the cost can be realized, and the benefits brought about by the weight reduction of the vehicle body can be realized. Reduction of the load of the combine harvester whole.

As shown in FIGS. 4 to 7 and 9, each stalk cutter 52 is integrally formed by a pair of side walls 53A of a steel plate member 53 bent into a U-shape, and an intermediate wall 53B of the steel plate member 53 forms It is a connecting portion connected to the support frame 51 with bolts, thereby, compared with the case where each stalk cutter 52 is independently formed and bolted to the support frame 51 respectively, it is possible to achieve improved workability when assembling the stalk cutters 52. improve.

Each side wall 53A of the steel plate member 53 is formed in an isosceles triangle viewed in the front-rear direction in the assembled state, and its upper and lower equilateral parts serve as blade parts 52 a of the culm cutter 52 .

That is, each culm cutting knife 52 is configured to have a blade portion 52a on its upper and lower edge portions, and the blade portion 52a to be used is changed by turning upside down to change the direction, thereby, when the blade portion 52a is used due to wear or chipping, etc. In the case where the sharpness of the blade portion 52a is reduced, even without grinding or replacing the blade 52, the blade portion 52a can be replaced by changing the orientation of the blade 52, which is simple and low-cost. Coping with cost.

As shown in Fig. 10, the coarse screen 31 for coarse selection is made of a steel plate-made sorting plate 54, and the said sorting plate 54, by punching out a plurality of sorting pieces 54A, makes it appear to be closer to the downstream side of its sorting direction. The upward squamous shape of the side is more inclined towards the upper side, and the sorting sheet 54A that is arranged to form the rear row is positioned at the staggered shape between the sorting sheet 54A of the front row, and is arranged in a staggered shape in the front, rear, left, and right directions to form multiple A drain port 54B, the sorting plate 54 is bolt-connected in the screen box 29 in a tilted posture with the downstream side of the sorting direction being more upward toward the upper side.

That is, the coarse sieve 31 for rough selection is constituted by the sorting plate 54, so the coarse sieve 31 is formed by arranging and disposing a plurality of scale plates (chaflips) made of strip-shaped steel plates, for example, with a certain interval in the front-rear direction. Simplification of the structure and reduction of cost can be realized compared with other cases and the like.

And, by arranging and forming a plurality of sorting sheets 54A in a staggered manner on the front, rear, left, and right sides, in the screening process, the sorting process on the coarse screen 31 is not on one side in the left-right direction but is evenly distributed, so it can be promoted. The grains are drained from each drain port 54B. In addition, since the coarse sieve 31 is tilted backward, compared with the case where the coarse sieve 31 is equipped with a horizontal posture, in the screening process, the coarse sieve 31 will separate the sorting process to the sieve. The upward pushing force of the upstream side of the sorting process direction becomes larger, thereby, the conveyance of the sorting process object to the downstream side of the sorting direction can be suppressed, and the up and down movement of the sorting process object becomes violent, and the sorting process can be more effectively performed. The specific gravity difference of the processed material is selected, so the occurrence of the third type of loss in which grains are discharged from the discharge port 23 to the outside of the vehicle can be reduced, and the leakage of grains with a larger specific gravity from each leakage port 54B can be promoted, and the result is realized. Improved grain recovery efficiency.

Among the sorting pieces 54A, the sorting pieces 54Aa located on the left and right central sides of the sorting plate 54 are formed in a substantially triangular shape in plan view, and the other sorting pieces 54Ab located at the left and right ends are formed to be larger than those on the left and right central sides. The piece 54Aa is short, and each drain opening 54B is formed in the same rectangle.

That is, each draining port 54B is formed into a larger rectangle than the sorting pieces 54Aa, 54Ab punched out in a substantially triangular shape in a plan view, thereby, it is possible to promote the flow of grains and the like from each draining port 54B of the sorting plate 54. In addition, by forming the sorting pieces 54Ab at the left and right ends of the sorting plate 54 shorter than the sorting pieces 54Aa at the left and right central sides, easy accumulation and separation of grains and the like from the sorting plate 54 can be promoted. The drain ports 54B at the left and right ends of the treated object leak, and as a result, the third type of loss that the grains do not leak from the drain ports 54B of the sorting plate 54 and are discharged to the outside of the vehicle from the discharge port 23 can be reduced. And it is possible to avoid the reduction of the sorting efficiency caused by the accumulation of the sorting process at the left and right ends of the sorting plate 54, so it is possible to realize the improvement of the sorting efficiency and the grain recovery efficiency.

In addition, in this combine harvester, since the rotation direction of the threshing cylinder 16 is set to be right-handed when viewed from the front as described above, there is a sorting process object from the downstream side of the rotation direction of the threshing cylinder 16, that is, the right side of the receiving net 17. The trend of increasing the volume under the side leakage.

Therefore, if it is configured such that the sorting processed objects leaked from the receiving net 17 directly flow down onto the swinging sorting mechanism 19, the sorting processed objects supplied to the right side of the swinging sorting mechanism 19 will increase, and the swinging and sorting mechanism 19 will have more sorting processed objects. The distribution of the sorting processed objects in the left-right direction of the sorting mechanism 19 becomes non-uniform, which easily leads to a decrease in the sorting efficiency and an increase in the third-class loss.

Therefore, in this combine harvester, as shown in FIG. The guide plate 56 that guides the sorting processed objects dropped on the right side of the receiving net 17 to make it flow down the left and right central sides of the swinging sorting mechanism 19, thereby most of the sorting objects dropped from the receiving net 17 The processed objects are supplied to the left and right central sides of the swinging sorting mechanism 19, and are evenly distributed in the left and right direction along with the swinging of the swinging sorting mechanism 19, so the sorting processed objects can not be separated in the left and right direction of the swinging sorting mechanism 19. As a result, it is possible to avoid a reduction in sorting efficiency and an increase in the third type of loss caused by the separation of the sorted objects on one side in the left-right direction of the swinging sorting mechanism 19 .

As shown in Fig. 1, Fig. 2 and Fig. 11, on the right side end of vehicle body frame 1, be equipped with and utilize the bagging device 6 that is loaded on the right half of vehicle body frame 1 and carry out bagging operation and use Auxiliary platform 57, which is fulcrum with front and rear facing fulcrum 58, can be switched to a working posture that protrudes toward the right outer side of the vehicle body, and a storage position that stands upright along the right side end of vehicle body frame 1. The working posture is maintained by abutting against the vehicle body frame 1, and the storage posture is maintained by a fixing tool not shown in the figure.

In addition, the bagging device 6 is equipped with a sunshade 63 that can be switched to cover and mount on the auxiliary platform 57 using the front and rear pivots 60 provided on the upper end of the grain tank 40 as a fulcrum. The upper action posture of the operator of the bagging operation and the storage posture above the threshing device 5, and by abutting against the front-rear-facing first stopper 61 provided on the right side of the upper end of the grain tank 40 The working posture is maintained, and the storage posture is maintained by abutting against the second stopper 62 arranged in the front and back direction on the left side of the upper end part of the grain tank 40 .

That is, by switching the awning 63 to the action posture, the bagging operation on the auxiliary platform 57 can be carried out in the shade, the working environment when carrying out the bagging operation can be improved, and the fatigue of the bagging operation can be alleviated.

The sunshade 63 includes: a frame portion 63A formed by bending a U-shaped round pipe steel material, and a sunshade portion 63B formed by a steel plate member inscribed on the frame portion 63A, and the sunshade portion 63 is formed when moving or moving toward the warehouse. At the time of storage, the function of the protection member which prevents other objects from contacting the threshing apparatus 5 from above can be performed by switching to a storage posture.

【Other implementations】

Other embodiments of the present invention are enumerated below.

(1)

In the above-mentioned embodiment, as shown in FIG. 12 , the threshing gear 48A may be attached to a predetermined position of the threshing cylinder frame 47 in such a state that the large-diameter part is bent into an "L" shape, and the protruding end part It has conveyance angle (theta)a (refer FIG. 12) so that it may function as the conveyance part 48c which pushes the reaped grain stem to the downstream side of a threshing process direction during the rotation operation of the threshing cylinder 16.

That is, with the rotation of the threshing cylinder 16, not only the plurality of threshing teeth 48 formed in a straight line perform threshing processing on the harvested straw that is raked and conveyed by the raking part 41 to the downstream side of the threshing processing direction, but also simultaneously The harvested straw is transported toward the downstream side of the threshing process direction, but on the upstream side of the threshing process direction with a large amount of threshing process material, the threshing teeth 48A located on the front side of the threshing cylinder 16 transport the threshing process material through the conveying part 48c. Since it is pushed out toward the downstream side of the threshing treatment direction, the conveyance of the threshing treatment material to the downstream side of the threshing treatment direction is promoted, thereby avoiding the stagnation of the threshing treatment material on the upstream side of the threshing treatment direction and the leakage of the threshing treatment material from the supply port 25 wait.

In addition, most of the threshing products on the upstream side of the threshing process direction are unthreshed straws. In view of this situation, the threshing gear 48A located on the upstream side of the threshing process direction has a conveying part 48c at its protruding end, thereby becoming an enlarged threshing process. Thus, a large amount of unthreshed grain straw on the upstream side of the threshing process direction can be effectively beaten by the threshing teeth 48A having enlarged the beating action portion.

(2)

As a threshing apparatus, the threshing apparatus mounted in the half-feed type combine harvester which supplies only the ear tip side of harvested grain stalks to the threshing chamber 14 may be sufficient.

(3)

As the threshing cylinder 2, also can be the threshing cylinder that does not possess the raking part 41, in addition, can also be the threshing cylinder that replaces the helical tooth 43 at the raking part 41 with comb teeth or threshing teeth 48.

(4)

As each rod-shaped member 47 of the barrel 16, you may comprise so that it can divide into several in the front-back direction. As the division method, for example, it can be considered to be divided into two parts, that is, the first half from the first connecting plate 80 to the second connecting plate 81, and the second half from the second connecting plate 81 to the third connecting plate 82. The 2-divided structure of the part, and divided into three parts, that is, the front side equipped with the processing gear 48A with the conveying part 48b, the middle part equipped with the processing gear 48B formed in a straight line, and equipped with The three-divided structure of the rear end part of 48 C of processing gears.

And, under the situation that each rod-shaped member 47 is made into two division structures of front half and rear half, also can be constituted so that it can carry out the interchangeability of its front half and rear half, in addition, each rod-shaped member 47 is made to have In the case of the front part side of processing gear 48A, the intermediate|middle part which has processing gear 48B, and the rear end part which has processing gear 48C, in the case of three division|segmentation structures, you may comprise so that direction may be changed and it may become the inversion posture which reversed front and rear.

(5)

As shown in FIG. 13, an angle material may be used as the rod-shaped member 47 of the barrel 16, and although illustration is omitted, a round bar steel material, an angle bar steel material, an angle pipe material, or a channel material etc. may be used.

(6)

As shown in FIG. 13, in the threshing cylinder 16, the rod-shaped member 47 may be fixedly equipped so that a direction may not be changed.

(7)

The number of rod-shaped members 47 installed on the threshing cylinder 2 can be variously changed, for example, eight rod-shaped members 47 may be installed as shown in FIG. 14 .

(8)

As the rod-shaped member 47, instead of a member formed in a straight line, for example, when it is arranged in a posture along the front-back direction of the support shaft 15, it may be in a rotation direction that is closer to the barrel 16 toward the rear end side. The member formed by twisting toward the upstream side, or conversely, may be twisted so that the rear end side becomes closer to the downstream side in the rotation direction of the threshing cylinder 16 when it is arranged in a posture along the front-back direction of the support shaft 15 formed parts.

Wherein, if the former is adopted as the rod-shaped member 47, the stagnation of the threshing process object in the threshing chamber 14 can be suppressed, so the threshing cylinder 16 can be constituted as a threshing cylinder suitable for crops with higher threshing ability; Since the rod-shaped member 47 contributes to the stagnation of the threshing processed product in the threshing chamber 14, the threshing cylinder 16 can be configured as a threshing cylinder suitable for crops with low threshing ability.

(9)

As the threshing teeth 48 of the threshing cylinder 16, all of them may be formed in a straight line, and may be welded and fixed to the corresponding threshing cylinder while being located on the straight line connecting the center of the support shaft 15 and the center of the threshing cylinder holder 47. on the predetermined position of the rack 47 (the same as the processing gear 48B in the middle part).

(10)

As shown in FIG. 13, as the processing gear 48 of the barrel 2, the processing gear 48A formed in a straight line similarly to the processing gear 48B in the middle part may be used as the processing gear 48A on the front side. The processing gear 48B of the intermediate part is formed as the processing gear 48C of the rear end part similarly as a linear processing gear.

(11)

You may provide the external thread part 48a at the base side of all the processing teeth 48 of the barrel 2, and you may detachably fix all the processing teeth 48 to the predetermined position of the corresponding rod-shaped member 47 with the nut 64.

(12)

As shown in FIG. 13 , as the threshing gear 48 , it may be configured such that a relatively long external thread portion 48 a is provided on the base end side inserted in the mounting hole 47A of the corresponding rod-shaped member 47 , and a The pair of nuts 64 screwed to the external threaded portion 48a can adjust the length of the pair of nuts 64 protruding outward from the corresponding rod-shaped member 47 by changing the screwed position of the pair of nuts 64 relative to the male threaded portion 48a.

(13)

As the threshing gear 48, it may consist of an angle bar steel material or a threshing cylinder frame, or may be bent and formed in "U" shape.

(14)

Various changes can be made as the arrangement intervals of the processing teeth 48. For example, when the number of rod-shaped members 47 is set as a multiple of 3, each processing gear 48 is placed on the adjacent rod-shaped members 47. The threshing teeth 48 are positioned in the state of staggering the 1/3 pitch along the front-rear direction, or, when the number of rod-shaped members 47 is set to be a multiple of 4, each processing gear 48 is positioned on the adjacent rod-shaped members 47. The threshing teeth 48 on the top are positioned in the state of staggering the 1/4 pitch along the front and rear direction; The arrangement interval of the processing gear 48 differs between the part side and the rear part side.

(15)

As the receiving net 17, for example, a mesh may be formed in a vertically long rectangle so that the length in the direction along the front-back direction of the barrel 16 is longer than the length in the circumferential direction, or a resin molded product may be used.

Claims (8)

1. A threshing device has a threshing chamber and a threshing cylinder and a receiving net arranged in the above-mentioned threshing chamber, The above-mentioned threshing cylinder rotates with the fulcrum facing back and forth as a fulcrum, and as it rotates, the threshing process is performed on the straw supplied from the front supply port, The above-mentioned receiving net is arranged under the above-mentioned threshing cylinder, and the processed product threshed by the above-mentioned threshing cylinder is drained, It is characterized in that, The barrel is composed of a plurality of barrel holders and a plurality of processing teeth, and the plurality of barrel holders are arranged to be arranged at predetermined intervals in the circumferential direction of the barrel in a posture along the front-rear direction of the support shaft. state; the plurality of threshing gears are arranged in a state of being spaced at predetermined intervals in the front-rear direction, and are equipped on each of these threshing cylinder racks in a manner protruding from the above-mentioned threshing cylinder rack to the outside of the above-mentioned threshing cylinder. The inside of the barrel is formed with an inner space connected to the threshing chamber, A fixed member is provided and fixed on the outer side of the above-mentioned barrel at predetermined intervals from the rotation track of the above-mentioned processing gear, and a plurality of stem cutters are installed so as to enter between the rotation tracks of the corresponding processing gear from the outer side of the above-mentioned processing gear. and fixed on the above fixed parts, A support plate is provided at the front and rear central parts of the above-mentioned support shaft. The support plate closes the upstream side part of the above-mentioned internal space from the rear side and is composed of a circular plate centered on the above-mentioned support shaft. multiple threshing barrel racks, The plurality of stalk cutters are disposed on the downstream side in the threshing process direction from the support plate in the fixing member. 2. The threshing device according to claim 1, characterized in that, The front end of the above-mentioned threshing cylinder is equipped with a raking part with a shape that becomes thinner as it gets closer to the end, The said raking part is provided with the helical tooth which rakes and conveys the grain stalk supplied from the said supply port backward as it rotates around the said support shaft. 3. The threshing device according to any one of claims 1 to 2, wherein: The above-mentioned rod-shaped member is equipped so that its orientation can be changed so that it can be turned upside down. 4. The threshing device according to any one of claims 1 to 2, wherein: The processing teeth provided on the rear part side of the said barrel have the sweep angle which inclines toward the rotation direction upstream side. 5. The threshing device according to any one of claims 1 to 2, wherein: The threshing gear provided on the front side of the above-mentioned threshing cylinder has a conveying part, The said conveyance part pushes and conveys the processed object in the said threshing chamber backward with the rotation around the said support shaft. 6. The threshing device according to any one of claims 1 to 2, characterized in that: The above-mentioned threshing teeth are equipped in a replaceable manner. 7. The threshing device according to any one of claims 1 to 2, characterized in that: The above-mentioned threshing teeth are equipped in a length-adjustable manner. 8. The threshing device according to any one of claims 1 to 2, wherein: Equipped with a swing sorting mechanism that accepts and sorts the processed objects that have leaked from the above-mentioned receiving net, The rougher part of the above-mentioned swinging sorting mechanism is constituted by a sorting plate, and the sorting plate is formed with a plurality of drain holes by punching out a plurality of sorting pieces in an upward scale shape.

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