JP2012060978A - Ridge cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ridge cutting machine capable of cutting the top face and the face of slope of a ridge at a time and whose durability is increased by reducing noise and vibration.SOLUTION: The ridge cutting machine 20 is mounted on a tractor 10 and includes a top face cutting unit 30 and a slope face cutting unit 31. The top face cutting unit 30 cuts earth on the top face of a ridge and conveys and removes the cut earth in a first direction. The slope face cutting unit 31 cuts earth on the face of slope of the ridge and conveys and removes the cut earth in a second direction. On planar view the first and second directions are parallel. On planar view the ridge cutting machine 20 can tilt the first and second directions with respect to the horizontal direction of the vehicle body of the tractor 10.

Description

  The present invention relates to a configuration of a grinder for shaving.

  In rice farming, before the paddy field is refilled with water, a work called “cooking” is performed. This lacquering is an operation of applying mud to the cocoon to close the cracks and mole holes of the old cocoon. This makes it difficult for water to escape from the paddy field and facilitates water management. In the past, all the lacquering was done manually, but in recent years, a lacquering machine is often used.

  The paddy coater crushes the soil on the surface of the old paddy, transports the mud accumulated in the bottom of the field to the surface of the paddy, and presses and crushes the broken paddy soil and the mud in the field together. It is configured to form Xinjiang. By crushing the soil of the old gutter once and then compacting it with mud, a gutter without a gap can be formed.

  By the way, in dredging, new dredging is formed by adding mud in the field to the old dredging, so that dredging increases by the amount of mud addition. Specifically, by applying the cocoon coating, the width of the cocoon increases and the height of the cocoon increases. Accordingly, if the lacquering is repeated every year, there is a problem that the width of the casket gradually increases and the area of the field (paddy field) decreases. Moreover, although the height of a wrinkle also becomes high gradually, if the height of a wrinkle becomes high too much, it will become impossible to perform the wrinkling with a wrinkle coater appropriately. Therefore, there was a need to pre-shave the slope and top surface of the fence before painting.

  Note that some lacquering machines have a function to scrape the slag, but this is for crushing and resolidifying the soil, and removal of the shaved soil is not necessarily taken into account. It cannot be expected to prevent the growth. In addition, since the glazing machine has a function of pressing the soil that has been smeared, the reaction is a force in the direction in which the glazing machine moves away from the cocoon. Therefore, it is difficult for the glazing machine to strongly press the member for cutting the ridge against the ridge. For this reason, the wrinkle coater could not efficiently cut the wrinkles deeply.

  In this regard, Patent Documents 1 and 2 disclose a soil working machine capable of shaving a ridge. The earth work machines disclosed in Patent Documents 1 and 2 are a revolving member provided so as to be able to be inverted vertically swiveled in a direction crossing the traveling direction, a circulation band provided on the revolving member, and a pair disposed on the circulation band. And a soil member. According to Patent Documents 1 and 2, the soil-resistant member can be variably held in a posture suitable for various operations, so that earthing work or the like on the upper surface or side surface of the ridge can be performed for general purposes.

Japanese Patent No. 3281964 Japanese Patent No. 3451445

  However, the earth work machine disclosed in Patent Document 1 or 2 can be cut at one time by either the upper surface or the slope of the ridge. Therefore, in the configuration of Patent Document 1 or 2, the work of scraping the old tack must be performed at least twice (the work of shaving the upper surface and the work of cutting the slope) before performing the fringing, and there is room for improvement. there were.

  Moreover, since the structure of patent document 1 or 2 is a structure which carries out circulation driving | running | working in the direction which cross | intersects an endless chain (circulation belt | band | zone body) with respect to the advancing direction, when a driving | running | working machine body is driven, it is orthogonal to the longitudinal direction of an endless chain. A force in the direction to be applied is applied to the endless chain. For this reason, there is a possibility that excessive resistance is generated at the meshing portion between the endless chain and the sprocket. When excessive resistance is generated at the meshing portion between the endless chain and the sprocket as described above, noise and vibration are caused, and durability of the endless chain and the sprocket is lowered.

  The present invention has been made in view of the above circumstances, and the main purpose of the present invention is that the upper surface and slope of the ridge can be cut at a time, and noise and vibration are reduced to improve durability. To provide a shaving machine.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, a grinder having the following configuration is provided. That is, the grinder is attached to the work vehicle and includes a top surface cutting portion and a slope cutting portion. The upper surface shaving part scrapes the soil on the upper surface of the ridge and conveys and removes the shaved soil in the first direction. The slope cutting unit cuts the soil on the slope of the ridge and conveys and removes the cut soil in the second direction. In the plan view, the first direction and the second direction are parallel, and in the plan view, the first direction and the second direction are inclined with respect to the lateral direction of the vehicle body of the work vehicle.

  With this configuration, the upper surface and the slope of the ridge can be shaved simultaneously. Then, by tilting the first direction and the second direction with respect to the left and right direction of the work vehicle, the soil conveyance direction of the upper surface cutting portion and the slope cutting portion is not orthogonal to the forward direction of the work vehicle. Therefore, compared to a configuration in which the soil conveyance direction of the top surface cutting portion and the slope cutting portion is orthogonal to the forward direction of the work vehicle, the load applied to the top surface cutting portion and the slope cutting portion is reduced when the work vehicle is advanced. can do. Thereby, while reducing the noise and vibration of a shaving machine, durability can be improved.

  In the planer, the first direction is preferably inclined with the first direction facing a direction opposite to the forward direction of the work vehicle.

  According to this configuration, the upper surface shaving portion cuts and conveys the soil in the direction opposite to the forward direction, and thus the reaction causes a force for the shaving machine to move forward. Thereby, when making a work vehicle drive forward, the resistance at the time of towing a shaving machine can be made small.

  In the planer, the first direction may be inclined with the first direction facing the forward direction side of the work vehicle.

  According to this configuration, since the direction in which the upper surface shaving unit scrapes and conveys the soil on the upper surface of the fence does not cancel out, the direction in which the work vehicle pulls the scraper does not cancel, so the soil on the upper surface of the fence is efficiently scraped. Can be transported.

  It is preferable that said shaving machine can change the inclination of the said 1st direction and the said 2nd direction with respect to the vehicle body left-right direction of the said working vehicle.

  Thereby, the inclination with respect to the left-right direction of the vehicle body in the first direction and the second direction can be set to an optimum inclination in consideration of various conditions such as the hardness of the soil of the straw and the state of the field.

A side view of a tractor provided with a shaving machine concerning one embodiment of the present invention. The rear view of the tractor provided with the shaving machine. A top view of a tractor provided with a shaving machine. (A) The figure which shows the structure of an upper surface cutting part. (B) The figure which shows the structure of a slope cutting part. The schematic diagram which shows the drive transmission mechanism of a shaving machine. The enlarged rear view of a shaving machine. The top view which shows a mode that the 1st direction was turned diagonally back. The top view which shows a mode that the 1st direction was turned diagonally forward. The schematic diagram which shows the drive transmission mechanism of the grinder in 2nd Embodiment. A top view of a tractor provided with a shaving machine concerning a 2nd embodiment. The schematic diagram which shows the drive transmission mechanism of the grinder which concerns on a modification.

  Next, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the shaving machine 20 according to the present embodiment is attached to the rear of an agricultural tractor (work vehicle) 10 and used. The grinder 20 is intended to trim the upper surface and the slope of an old scissor before trimming, so as to adjust the height and width of the scissors.

  The tractor 10 includes a vehicle body 13 having a pair of front wheels 11 and rear wheels 12 on the left and right. However, instead of the wheels, a tractor having a crawler may be used. An engine 15 serving as a drive source is disposed inside a bonnet 14 disposed at the front portion of the vehicle body 13. The rear wheel 12 is driven by the driving force of the engine 15 so that the vehicle body 13 can travel. The tractor 10 can also drive the vehicle body 13 by a four-wheel drive system that drives both the front wheels 11 and the rear wheels 12.

  A connecting arm 16 that is a connecting member for connecting the grinder 20 is provided at the rear portion of the vehicle body 13. The connecting arm 16 is configured to be driven by lifting means (not shown), and is configured to be able to vertically move the shaving machine 20 connected to the connecting arm 16. In addition to the shaving machine 20 of the present embodiment, other types of working machines such as a tiller, a mower, and a hoe coater can be connected to the connecting arm 16. Similarly, a PTO shaft (drive extraction shaft) (not shown) that outputs the driving force of the engine 15 to the work machine is provided at the rear portion of the vehicle body 13.

  A drive transmission shaft 17 is connected to the PTO shaft via a universal joint or the like. The drive transmission shaft 17 is further connected to the drive input shaft 36 of the grinder 20 via the universal joint 18. With the above configuration, the driving force of the engine 15 output from the PTO shaft of the tractor 10 can be input to the grinder 20, and the grinder 20 can be driven to scrape the flaw.

  Next, the configuration of the grinder 20 of the present embodiment will be described.

  The grinder 20 mainly includes an upper surface shaving part 30, a slope cutting part 31, a frame 32 that supports the upper face grinding part 30 and the slope grinding part 31, and a gauge ring 34.

  The upper surface shaving portion 30 is configured to scrape the upper surface (horizontal portion) of the ridge. Further, the slope cutting unit 31 is configured to cut the slope of the ridge (a portion that is inclined). The detailed configurations of the upper surface cutting portion 30 and the slope cutting portion 31 will be described later.

  The frame 32 mainly includes an attachment frame 32a, a left support frame 32b, and a right support frame 32c. The attachment frame 32 a is fixed to the connection arm 16 of the tractor 10. The left support frame 32b extends obliquely rearward from the left side of the mounting frame 32a. The right support frame 32c is provided to extend obliquely rearward from the right side of the mounting frame 32a. Then, the upper surface cutting portion 30 and the slope cutting portion 31 are supported at the rear ends of the left and right support frames 32b and 32c.

  Note that, in the present embodiment, when the scissors 20 are shaved with the grinder 20, it is assumed that the tractor 10 travels while looking at the scissors on the right hand of the tractor 10, as shown in FIG. Therefore, in the grinder 20 of the present embodiment, the upper surface cutting portion 30 and the slope cutting portion 31 are arranged in such a posture that a part thereof protrudes from the right side surface of the vehicle body 13. Therefore, in order to support the upper surface cutting portion 30 and the slope cutting portion 31 in the posture as described above, the left and right support frames 32b and 32c are arranged to be inclined toward the right rear as shown in FIG. Has been.

  The gauge wheel 34 is a wheel that can roll in contact with the ground of the field, and is fixed to an appropriate position of the upper surface cutting portion 30 or the slope cutting portion 31 via a height adjusting member 35. Thereby, the height (distance from the ground of a farm field to the upper surface cutting part 30 and the slope cutting part 31) of the upper surface cutting part 30 and the slope cutting part 31 can be stabilized. The height adjusting member 35 is configured to be slidable with respect to the slope cutting portion 31 (or the top surface cutting portion 30), and thereby the position of the gauge ring 34 can be adjusted. Thereby, the height of the upper surface cutting part 30 and the slope cutting part 31 can be adjusted according to the height of the ridge.

  Next, the upper surface cutting portion 30 and the slope cutting portion 31 will be described in detail with reference to FIGS. 4 and 5. In the present embodiment, each of the upper surface shaving unit 30 and the sloped surface shaving unit 31 is configured to scrape a ridge by chain driving.

  More specifically, as shown in FIG. 4A, the upper surface shaving portion 30 is endlessly connected to an upper surface drive sprocket (drive input side upper surface drive transmission member) 40 and a driven sprocket (driven side upper surface drive transmission member) 41. The chain (circulation belt) 42 is suspended. Further, as shown in FIG. 4 (b), the slope cutting portion 31 includes a slope drive sprocket (drive input side slope drive transmission member) 43, a first driven sprocket (first driven side slope drive transmission member). ) 44 and a second driven sprocket (second driven side slope drive transmission member) 45, an endless chain (circulation belt) 46 is suspended. 4 and 5 are schematic views, and the gear teeth of the sprocket, each plate of the endless chain, and the like are omitted.

  As shown in FIG. 5, the upper surface drive sprocket 40 and the slope drive sprocket 43 are fixed to the drive input shaft 36. With this configuration, when the driving force of the engine 15 output from the PTO shaft is input to the driving input shaft 36, the upper surface driving sprocket 40 and the slope driving sprocket 43 are rotationally driven in the same direction. The endless chain 42 and the endless chain 46 of the sloped surface 31 are circulated and driven in the same direction. As shown in FIG. 5, the upper surface drive sprocket 40 and the slope drive sprocket 43 are disposed adjacent to each other in the axial direction of the drive input shaft 36. In this way, the upper surface driving sprocket 40 and the slope driving sprocket 43 are fixed to the drive input shaft 36 adjacent to each other, so that the driving force input to the driving input shaft 36 is converted to the upper surface cutting portion 30 and the slope cutting. The mechanism for distributing to the part 31 can be configured in a compact manner.

  As shown in FIG. 4, a plurality of soil transport bodies 47 are attached to the endless chains 42 and 46 at equal intervals (or substantially equal intervals) along the longitudinal direction of the endless chains 42 and 46. With this configuration, by circulatingly driving the endless chains 42 and 46, the soil transport body 47 attached to the endless chains 42 and 46 can be circulated in a direction along the longitudinal direction of the endless chains 42 and 46. it can. The soil transport body 47 is formed in a shape (for example, a claw shape or a hook shape) that can be scraped and transported when circulating as described above.

  Moreover, the upper surface shaving part 30 is provided with the chain case 48 which covers the upper surface drive sprocket 40, the driven sprocket 41, the endless chain 42, and the soil conveyance body 47 from the outer side. The slope cutting unit 31 includes a chain case 49 that covers the slope drive sprocket 43, the first driven sprocket 44, the second driven sprocket 45, the endless chain 46, and the soil transport body 47 from the outside.

  The chain cases 48 and 49 can improve safety because the earth transport body 47 that circulates is not unnecessarily exposed. The chain cases 48 and 49 also serve as a sprocket support frame, and each sprocket is supported by the chain case 48 or the chain case 49.

  A part of the chain cases 48 and 49 is formed in a notch shape, and a part of the traveling locus of the soil transport body 47 is exposed. Then, by circulating the soil transport body 47 while pressing the exposed travel locus against the reed, the soil transport body 47 that circulates can cut the soil on the surface of the reed. Further, the ground soil is transported toward the traveling direction of the soil transport body 47 by the soil transport body 47 that circulates. With the above configuration, the soil of the straw can be shaved and removed. As shown in FIG. 4, the portion of the traveling locus of the soil transport body 47 in the upper surface shaving unit 30 that contacts the upper surface of the ridge and scrapes the soil is particularly referred to as an upper surface working unit. In addition, a portion of the traveling locus of the soil transport body 47 in the slope cutting unit 31 that cuts the soil in contact with the slope of the ridge is particularly referred to as a slope action unit.

  As shown in FIG. 4, the soil transport body 47 is configured to travel linearly in the upper surface acting part and the slope acting part. As a result, the surface of the ridge can be cut linearly. Here, the direction in which the soil transport body 47 travels in the upper surface acting portion is referred to as a first direction. In addition, the direction in which the soil transport body 47 moves in the slope acting portion is referred to as a second direction.

  As shown in FIG. 6, when viewed from a direction orthogonal to the first direction and the second direction, the upper surface action portion and the slope action portion are arranged so as to partially overlap each other. As a result, the shoulder portion of the heel (the boundary portion between the upper surface and the slope) can be removed well.

  As shown in FIG. 3, the first direction and the second direction are configured to face in a direction that is not parallel to the front-rear direction of the vehicle body 13 in plan view. For example, in FIG. 3, the first direction and the second direction are oriented parallel to the left-right direction of the vehicle body. With this configuration, when the grinder 20 is driven while the vehicle body 13 is traveling forward, the trajectory for cutting and transporting gradually moves forward while cutting and transporting soil in a direction different from the direction in which the vehicle body moves. Since it moves, you can cut the soil like a sweep. That is, the upper surface shaving portion 30 and the slope shaving portion 31 can only be removed by removing the soil in a straight line, but by removing the soil while sweeping as described above, It can be removed in a wide range.

  Similarly, as shown in FIG. 3, the first direction and the second direction are parallel in a plan view. Thereby, the soil conveyance body 47 that travels in the upper surface action portion and the soil conveyance body 47 that travels in the slope action portion do not interfere with each other. For this reason, as shown in FIG. 3, the upper surface shaving part 30 and the slope cutting part 31 are arranged side by side in the direction perpendicular to the first direction and the second direction (in the case of FIG. 3, the longitudinal direction of the vehicle body). be able to. Thereby, the shaving machine 20 can be comprised compactly.

  In addition, as shown in FIG. 6, the direction (first direction) in which the soil transport body 47 travels in the upper surface acting portion is horizontal (or substantially horizontal), and is on the slope side (inside the cage). It is set to head. Thereby, the upper surface cutting part 30 can grind the upper surface of a ridge horizontally (or substantially horizontal). In addition, when the soil transport body 47 is caused to travel toward the inside of the ridge at the upper surface acting portion, the soil transport body 47 can transport the soil toward the inside of the heel. Thereby, since the soil of the upper surface which the upper surface shaving part 30 shaved can be dropped toward the inner side (inside the field) of the straw, the soil which the upper face shaving part 30 shaved does not remain on the upper surface of the straw. .

  In addition, as shown in FIG. 6, the direction (second direction) in which the soil transport body 47 travels in the slope action unit coincides with (or substantially coincides with) the slope of the slope of the ridge and is directed downward. Is set to Thereby, the slope can be cut by the slope cutting unit 31 while maintaining the slope of the slope of the ridge. In recent years, since the glazing is performed with a glazing machine, it can be considered that the inclination of the slope of the ridge is almost constant. Therefore, the inclination in the second direction may be fixed. In addition, the soil transport body 47 can be transported downward by the soil transport body 47 by causing the soil transport body 47 to run downward in the slope acting portion. Thereby, since the soil of the slope cut by the slope cutting unit 31 can be dropped into the field, the soil cut by the slope cutting unit 31 does not remain on the slope of the fence.

  Further, in the present embodiment, the slope cutting portion 31 is disposed behind the top cutting portion 30 in the front-rear direction of the vehicle body 13. Thereby, the shaved soil can be removed without leaving it in the cage. That is, the soil whose upper surface shaving unit 30 has shaved the upper surface of the reed is conveyed toward the inner side of the reed by the soil transport body 47 driven in the first direction, so that at least a part of the soil transported at this time is , Falls on the slope of the frog. However, in the present embodiment, the slope-cutting portion 31 is arranged behind the top-cutting portion 30, so that the slope-cutting portion 31 cuts the ridge from behind the top-cutting portion 30 by causing the vehicle body 13 to travel forward. . Thereby, the soil which the upper surface cutting part 30 dropped to the slope can be removed later by the slope cutting part 31.

  The soil shaved by the upper surface shaving part 30 and the slope shaving part 31 is transported toward the inside of the ridge, and finally accumulates on the crease (near the lowermost end of the slope of the ridge). However, if the soil cut by the shaving machine 20 remains piled up, it becomes impossible to use the mud accumulated at the bottom of the rowing of the farm field, so that it is not possible to appropriately perform the post-coating process. . Therefore, the grinder 20 has a soil closing member 53 behind the upper surface shaving part 30 and the slope shaving part 31. The soil gathering member 53 is for pulling the soil on the field to the inside of the field (in the direction away from the straw) by pulling the field straw. Since the earth scraping member 53 can bring the soil dropped by the upper surface shaving part 30 and the slope shaving part 31 to the inner side of the field, the mud accumulated in the bottom of the field field by the subsequent process of scouring Can be used.

  As described above, the grinder 20 of the present embodiment can not only simply grind the upper surface and the slope of the reed simultaneously, but also the arrangement of the upper face grinding portion 30 and the slope grinding portion 31 and the soil transport body 47. By devising the traveling direction, it is possible to effectively remove the shaved soil from the top of the reed and to effectively adjust the shape of the reed.

  Further, in this embodiment, the direction (first direction) in which the soil transport body 47 travels in the upper surface action portion is the direction facing the inner side of the reed, so the reaction of the soil transport body 47 scraping and transporting the soil causes the reed A force is generated so that the entire cutting machine 20 flows toward the outside of the ridge. On the other hand, since the slope cutting portion 31 is for cutting the slope of the heel, the slope acting portion of the slope grinding portion 31 is naturally disposed inside the heel. Therefore, when a force that causes the grinder 20 to flow outside the scissors is generated by the reaction, the slope acting portion of the slope shaving portion 31 is pressed against the slope of the scissors. Thereby, the slope of the ridge can be efficiently shaved by the slope sharpening part 31.

  Also, if the entire grinder 20 is flowed indefinitely toward the outside of the rod due to the reaction, it is extremely difficult to move the tractor that pulls the grinder 20 straight. In this respect, the grinder 20 of the present embodiment includes the slope sharpening portion 31, so that the slope sharpening portion 31 is pressed against the slope of the trough to serve as a kind of stopper. It is possible to prevent the whole from being swept away to the outside of the cage. Thereby, it becomes easy to advance the tractor which pulls the grinder 20 straight.

  As described above, the grinder 20 of the present embodiment has a configuration in which the upper surface shaving unit 30 presses the slope shaving unit 31 against the slope of the scissors using a reaction in which the upper surface of the coral is shaved and transports the soil. By adopting it, it becomes possible to efficiently cut the slope of the rod, and it is possible to exhibit the effect that the straightness of the tractor can be improved.

  In the present embodiment, the direction (second direction) in which the soil transport body 47 travels in the slope acting portion is the downward direction, so that the reaction of the soil transport body 47 scraping and transporting the soil causes A force is generated so that the entire machine 20 is lifted up. If the upper surface working part of the upper surface shaving part 30 is lifted from the upper surface of the ridge by this force, the upper surface shaving part 30 cannot shave the upper surface of the heel.

  Therefore, in the present embodiment, the weight attaching portion 50 is provided in the chain case 48 of the upper surface shaving portion 30, and the weight 51 can be attached to the weight attaching portion 50. Due to the weight of the weight 51, it is possible to prevent the upper surface working part from floating from the upper surface of the bag. Further, the number of weights 51 attached to the weight attaching portion 50 can be changed, and the number of weights can be adjusted according to the hardness of the soil of the straw. Note that the weight 51 may be omitted when the upper surface working portion can be prevented from being lifted by the weight of the grinder 20.

  By the way, when the vehicle body 13 travels while shaving the soil by the soil transport body 47, the soil transport body 47 is dragged in the vehicle body traveling direction, so the direction along the vehicle body traveling direction with respect to the soil transport body 47 The power of. When a force is applied to the soil transport body 47, a force in the same direction is also applied to the endless chain. Here, for example, when the first direction and the second direction are parallel to the left-right direction of the vehicle body 13 as shown in FIG. 3, the longitudinal direction of the endless chain is also parallel to the left-right direction of the vehicle body 13. When 13 is moved forward, a force in a direction perpendicular to the longitudinal direction of the endless chain is applied to the endless chain.

  If force in a direction perpendicular to the longitudinal direction of the endless chain is applied to the endless chain in this way, excessive resistance may be generated at the meshing part of the endless chain and the sprocket, causing noise and vibration and endless chaining. The durability of the chain and sprocket may be reduced. Therefore, the grinder 20 of the present embodiment is configured such that the first direction and the second direction can be inclined with respect to the left-right direction of the vehicle body in plan view.

  Specifically, it is as follows. That is, in the present embodiment, the right support frame 32c can be expanded and contracted. On the other hand, a rotation support shaft 32d is disposed at the rear end portion of the left support frame 32b, and the upper surface shaving portion 30 and the slope cutting portion 31 rotate in a horizontal plane around the rotation support shaft 32d. Supported as possible. With this configuration, the upper surface cutting portion 30 and the slope cutting portion 31 can be rotated about the rotation support shaft 32d by extending and contracting the right support frame 32c. In order to cope with the expansion and contraction of the right support frame 32c, the right support frame 32c is configured to be rotatable in a horizontal plane with respect to the mounting frame 32a with the front end portion as a center. Similarly, in order to be able to cope with the expansion and contraction of the right support frame 32c, the right support frame 32c rotates in a horizontal plane with respect to the upper surface shaving portion 30 and the slope shaving portion 31 around the rear end portion. It is configured to be possible.

  With the above configuration, the first direction and the second direction can be tilted with respect to the left-right direction of the vehicle body in a plan view, so that the first direction is obliquely rearward (the first direction is opposite to the forward direction). And a state where the first direction is inclined forward (a state where the first direction is inclined toward the forward direction side, ie, a state shown in FIG. 8). can do. The right and left support frame 32c can be expanded and contracted as appropriate. For example, the right support frame 32c can be expanded and contracted by a hydraulic cylinder, or can be manually expanded and contracted by an operator. Further, the drive transmission shaft 17 is also configured to be extendable / contractable in order to accommodate the expansion / contraction of the right support frame 32c.

  As described above, when the vehicle body 13 is caused to travel forward by tilting the first direction and the second direction with respect to the left-right direction of the vehicle body in plan view, the direction of the force applied to the endless chain It can shift from the direction orthogonal to the longitudinal direction of the chain. Thereby, since resistance of the meshing part of the endless chain and the sprocket can be reduced, noise and vibration of the shaving machine 20 can be reduced, and durability of the endless chain and the sprocket can be improved.

  Further, when the first direction is set to be obliquely rearward in plan view (state of FIG. 7), the following effects can be obtained. That is, in this case, the soil transport body 47 of the upper surface action portion transports the soil while shaving the soil diagonally backward, and therefore, by this reaction, a force that causes the entire shaving machine 20 to flow obliquely forward is provided. receive. That is, since the grinder 20 tries to move forward spontaneously, it is possible to reduce the resistance when the tractor 10 pulls the grinder 20. Therefore, it is suitable, for example, when the field scaffolding is bad and the traction force by the tractor 10 cannot be fully exhibited.

  On the other hand, when the first direction is set to be obliquely forward of the vehicle body in plan view (state shown in FIG. 8), the following effects can be obtained. That is, in this case, the soil transport body 47 of the upper surface action portion travels obliquely forward by the circulation drive of the endless chain 42, and thus has a speed component toward the front. Therefore, by moving the vehicle body 13 forward, it is possible to increase the speed component in which the soil transport body 47 of the upper surface acting portion moves forward. That is, since the earth transport body 47 can be moved by synthesizing the driving force by the circulation drive of the endless chain 42 and the force by which the vehicle body 13 moves forward, the upper surface of the kite can be more strongly scraped. Therefore, it is suitable, for example, when the soil of the reed is hard and the reed cannot be cut sufficiently only by driving the endless chain 42.

  The effect as described above becomes stronger as the angle formed by the first direction and the left-right direction of the vehicle body 13 is larger. Therefore, the grinder 20 is configured such that the inclinations of the first direction and the second direction with respect to the left-right direction of the vehicle body 13 can be set arbitrarily. As a result, the angle can be appropriately changed according to the hardness of the cocoon, the state of the scaffolding in the field, and the like, and the shaving machine 20 according to the present embodiment enables the shaving according to the situation.

  However, when the angle formed by the first direction and the left-right direction of the vehicle body 13 is increased, the upper surface of the ridge cannot be cut to the back by the upper surface cutting portion 30, and the upper surface of the ridge can be cut by the upper surface cutting portion 30. The range becomes narrower. In this regard, if the first direction is set to be parallel to the left and right direction of the vehicle body 13 as shown in FIG. The range that can be cut can be maximized. Therefore, when it is desired to cut the upper surface of the bag widely, the first direction may be set to be parallel to the left-right direction of the vehicle body 13 as shown in FIG.

  As explained above, the grinder 20 of the present embodiment is attached to the tractor 10, and includes the upper surface cutting portion 30 and the slope cutting portion 31. The upper surface shaving unit 30 cuts the soil on the upper surface of the ridge and conveys and removes the shaved soil in the first direction. The slope-cutting unit 31 cuts the soil on the slope of the ridge and conveys and removes the shaved soil in the second direction. In the plan view, the first direction and the second direction are parallel. And the planer 20 of this embodiment can incline a 1st direction and a 2nd direction with respect to the vehicle body left-right direction of the tractor 10 by planar view.

  With this configuration, the upper surface and the slope of the ridge can be shaved simultaneously. Then, by tilting the first direction and the second direction with respect to the left-right direction of the tractor 10, the soil conveyance directions of the upper surface cutting portion 30 and the slope cutting portion 31 are not orthogonal to the forward direction of the work vehicle. Therefore, when the work vehicle is moved forward, the upper surface shaving unit 30 and the slope cutting unit 31 have a soil conveyance direction orthogonal to the forward direction of the work vehicle. Such a load can be reduced. Thereby, while reducing the noise and vibration of the shaving machine 20, durability can be improved.

  Further, the grinder 20 of the present embodiment can be set so that the first direction is inclined in a direction opposite to the forward direction of the tractor 10 in plan view.

  According to this configuration, the upper surface shaving unit 30 cuts and conveys the soil in the direction opposite to the forward direction, and thus the reaction causes a force for the shaving machine 20 to advance in the forward direction side. . Thereby, when making the tractor 10 drive forward, the resistance at the time of towing the grinder 20 can be reduced.

  Further, the grinder 20 of the present embodiment can be set so that the first direction is inclined toward the forward direction side of the tractor 10 in plan view.

  According to this configuration, the direction in which the upper surface shaving unit 30 cuts and conveys the soil on the upper surface of the reed and the direction in which the tractor 10 pulls the reeder 20 are not offset, so that the soil on the upper surface of the reed is efficiently removed. It can be cut and transported.

  Moreover, the grinder 20 of this embodiment can change the inclination of the 1st direction with respect to the left-right direction of the vehicle body of the tractor 10, and a 2nd direction.

  Thereby, the inclination with respect to the left-right direction of the vehicle body in the first direction and the second direction can be set to an optimum inclination in consideration of various conditions such as the hardness of the soil of the straw and the state of the field.

  Next, a second embodiment of the present invention will be described. In the following description, the same or similar members as those in the first embodiment are denoted by the same reference numerals in the drawings, and the description may be omitted.

  In the second embodiment, the soil transport body 47 of the slope cutting unit 31 is configured to run in the direction opposite to that of the first embodiment.

  Specifically, as shown in FIG. 9, a counter shaft 37 parallel to the drive input shaft 36 is provided, and the counter gear 38 and the slope driving sprocket 43 are fixed to the counter shaft 37. An upper surface drive sprocket (drive input side upper surface drive transmission member) 40 and a slope drive output gear (drive input side slope drive transmission member) 39 are fixed to the drive input shaft 36, and the counter gear 38 and the method are fixed. The surface drive output gear 39 is engaged. With this configuration, the slope driving sprocket 43 can be rotated in the reverse direction with respect to the upper surface driving sprocket 40, so that the endless chain 42 of the upper surface cutting portion 30 and the endless chain 46 of the slope cutting portion 31 are circulated in the reverse direction. be able to.

  With the above configuration, the traveling direction (second direction) of the soil transport body 47 in the slope acting portion is the reverse direction of the second direction in the first embodiment. That is, in the present embodiment, the direction (second direction) in which the soil transport body 47 travels in the slope action unit is set to coincide with (or substantially coincide with) the slope of the slope of the ridge and to face upward. Has been.

  In this way, by directing the second direction upward, the soil transporting body 47 of the slope acting portion presses the entire grinder 20 downward by a reaction that scrapes and transports the soil upward. Force is generated. Thereby, since the upper surface effect | action part of the upper surface grinding part 30 can be pressed with respect to the upper surface of a ridge, the upper surface of a ridge can be shaved efficiently. Moreover, the weight attaching part 50 and the weight 51 which were required in 1st Embodiment can be abbreviate | omitted.

  However, when comprised as mentioned above, since the soil shaved by the slope cutting part 31 is conveyed upward, the said soil will be carried to the upper surface of a fence. Therefore, in the present embodiment, as shown in FIG. 10, the upper surface cutting portion 30 is disposed behind the slope cutting portion 31 in the front-rear direction of the vehicle body 13. According to this, even when the soil whose slope has been cut by the slope cutting part 31 has been carried to the upper surface of the fence, the soil carried to the upper face is removed by the upper face grinding part 30. can do.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  The left support frame 32b may be configured to be rotatable in a horizontal plane with respect to the mounting frame 32a with the front end portion as the center. According to this configuration, the attachment frame 32a, the left and right support frames 32b and 32c, the upper surface cutting portion 30, and the slope cutting portion 31 constitute a kind of four-bar linkage mechanism. Therefore, the upper surface cutting portion 30 and the slope cutting portion 31 can be moved in the left-right direction of the vehicle body 13 in the horizontal plane. According to this configuration, for example, when the tractor 10 is traveling on the road surface, the grinder 20 can be brought closer to the center of the vehicle body 13 in the left-right direction, so that the left-right balance of the vehicle body can be improved. .

  In the above embodiment, the upper surface shaving portion has a configuration in which an endless chain is suspended on two sprockets, and the slope surface shaving portion has a configuration in which an endless chain is suspended on three sprockets, but the number and arrangement of sprockets may be changed as appropriate. it can. For example, the number of sprockets in the sloped portion can be two. According to this, the slope cutting portion can be reduced in size and weight. In this case, for example, as shown in FIG. 11, an additional driven sprocket 55 is provided in the upper surface cutting portion, and the slope driving sprocket 43 is driven via a transmission shaft 56 fixed to the driven sprocket 55. You can also. However, if the slope driving sprocket 43 is fixed to the drive input shaft 36 as shown in FIG. 5 and the endless chain 46 is directly driven by the slope driving sprocket 43, good drive transmission efficiency can be realized. Therefore, it is particularly suitable.

  In the above embodiment, the height of the upper surface shaving portion 30 and the sloped portion 31 can be changed by changing the position of the gauge ring 34. However, when the positions of the upper surface shaved portion 30 and the sloped portion 31 are increased. , The part under the slope of the coral can no longer be cut. Therefore, the configuration may be such that the position of the second driven sprocket 45 of the slope cutting portion 31 can be changed. In this case, the second driven sprocket 45 is moved in a direction parallel to the second direction. According to this, it is possible to change the length of the slope that can be sharpened by the slope sharpening portion 31 by changing the length of the slope acting portion without changing the inclination in the second direction. Thereby, it can respond to the height change of the upper surface cutting part 30 and the slope cutting part 31. FIG.

  In the above embodiment, the upper surface shaving unit 30 and the slope cutting unit 31 are configured to scrape and transport the soil by chain driving, but are not limited thereto, and other configurations that can scrape and transport the soil may be employed. it can. For example, both or any one of the upper surface cutting portion and the slope cutting portion may be configured by a screw conveyor. That is, the screw conveyor shaft is arranged in parallel with the first direction or the second direction, and the screw conveyor is driven to rotate and pressed against the surface of the ridge, thereby scraping the soil by the screw conveyor feeding action. The soil can be conveyed in the first direction or the second direction. In this case, the wings of the screw conveyor can be grasped as a soil carrier. Even in the case where the soil is scraped and conveyed by the screw conveyor, the first direction and the second direction are inclined with respect to the left-right direction of the vehicle body, so that On the other hand, since such a burden can be reduced, the effect of the present invention that noise and vibration are reduced and durability is improved can be obtained. In addition, since the chain drive type grinder adopted in the above embodiment can be driven at a higher speed than a screw conveyor, from the viewpoint of efficiently cutting soil by conveying soil at high speed, the chain drive method It is particularly suitable to construct a shaving machine.

  In the above-described embodiment, when the second direction is downward, the upper surface shaving portion 30 is disposed in front of the slope cutting portion 31 (first embodiment), and when the second direction is upward, the upper surface shaving portion 30 is disposed. Although it arrange | positions after the slope cutting part 31 (2nd Embodiment), the front-back relationship of the upper surface cutting part 30 and the slope cutting part 31 is not necessarily restricted to this.

  For example, when the second direction is directed downward, the upper surface cutting portion 30 may be disposed after the slope cutting portion 31. In this case, a part of the soil conveyed by the upper surface shaving unit 30 toward the field side falls on the slope of the reed and remains. However, when the amount of soil that the upper surface cutting portion 30 drops on the slope of the ridge is small, there is no problem with this configuration.

  Further, for example, when the second direction is upward, the upper surface cutting portion 30 may be disposed in front of the slope cutting portion 31. In this case, the soil conveyed upward by the slope cutting unit 31 remains on the upper surface of the fence. In this case, a soil gathering member for bringing the soil on the upper surface of the fence closer to the farm field may be provided behind the slope cutting portion 31.

DESCRIPTION OF SYMBOLS 10 Tractor 20 Sharpener 30 Top surface cutting part 31 Slope cutting part 37 Soil conveyance body

Claims (4)

A grinder attached to a work vehicle,
Cutting the soil on the upper surface of the ridge, and transporting and removing the shaved soil in the first direction;
Cutting the soil on the slope of the reed, and the slope cutting section that removes the ground by transporting it in the second direction;
With
The first direction and the second direction are parallel in a plan view, and the first direction and the second direction are inclined with respect to the left-right direction of the vehicle body of the work vehicle in a plan view. Sharpener. The grinder according to claim 1, wherein the first direction is inclined in a direction opposite to a forward direction of the work vehicle in plan view. A shaving machine according to claim 1,
A cutting machine characterized in that, in plan view, the first direction is inclined toward the forward direction side of the work vehicle. A shaving machine according to any one of claims 1 to 3,
A grinder capable of changing inclinations of the first direction and the second direction with respect to a lateral direction of the vehicle body of the work vehicle.

Images