JP2020099279A - Threshing machine sorter for combine harvesters - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the balance of sorting burden. SOLUTION: Three wind splitting bodies (30, 31, 32) are provided in an upper stage, a middle stage, and a lower stage for branching the blowing direction of the selected wind from Karami (24), and between each wind splitting body, from the bottom. The first selection air passage (33), the second selection air passage (34), the third selection air passage (35), and the fourth selection air passage (36) are formed in this order, and the air is blown from the first selection air passage. The wind flows on the upper side of the first transfer spiral (25a) arranged on the rear side of the Karami (24) and on the first return shelf (22) provided at the lower part of the swing sorting shelf (15). Then, the sorting wind blown from the second sorting air passage flows toward the latter half of the Glen Sheave (21) and the Chaf Sheave (19) provided in the middle portion in the front-rear direction of the rocking sorting shelf, and the third is selected. The sorting wind blown from the sorting air passage blows through the middle side of the chaff sheave to select the wind, and the sorting wind blown from the fourth sorting air passage is a transfer shelf provided at the front of the rocking sorting shelf (15). 17) Along the lower surface of the tip, it acts on the starting end side of the chaff sheave to select the wind. [Selection diagram] Fig. 3

Description

The present invention relates to a thresher sorting device mounted on a combine.

Conventionally, the sorting air duct from Kara Minoh is composed of two upper and lower air splits, the lower first, the middle second, and the upper third air duct, and the lower first air duct is the first. It flows along the transfer spiral and the 1st return shelf, and is selected by the sorting wind that blows over the Straw rack. The second sorting air passage is selected by the sorting wind that passes over the Glen sieve and the second chaff sieve. The third selection air passage is adapted to perform the air selection by the selection air that blows over the first chaff sheave (see, for example, Patent Document 1).

JP, 2010-273563, A

According to the above-mentioned known example, since the sorting wind from Karatake has the three air passages of upper, middle, and lower, sufficient sorting performance cannot be expected, resulting in reduction of loss.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to disperse the sorting air from Kara Tsumugi into four stages to balance and reduce the sorting load and to improve the sorting performance.

The present invention has taken the following technical means in order to solve the above problems.

That is, the present invention according to claim 1 provides three wind split bodies (30, 31, 32) of an upper stage, a middle stage, and a lower stage for branching the blowing direction of the sorting wind from the Karato (24), and each wind split is provided. Between the bodies (30, 31, 32), from the bottom, the first sorting air duct (33), the second sorting air duct (34), the third sorting air duct (35), and the fourth sorting air duct (36). And the sorting air blown from the first sorting air passage (33) is above the No. 1 transfer spiral (25a) arranged on the rear side of the Karato (24) and the swing sorting shelf (15). The sorting wind that flows through the first return rack (22) provided at the lower part of the rack for wind sorting and is blown from the second sorting wind passage (34) is an intermediate portion in the front-rear direction of the swing sorting rack (15). The selection wind that flows toward the latter half of the gran sheaves (21) and the chaff sheaves (19) provided for the air selection and is blown from the third selection air passage (35) is at the middle side of the chaff sheaves (19). The sorting air that is blown through to select the air and is blown from the fourth sorting air passage (36) flows along the lower surface of the tip of the transfer shelf (17) provided at the front part of the swing sorting shelf (15) along with the chaff sheave ( 19) A thresher sorting device in a combine, which is configured to act on the starting end side to perform wind selection.

According to a second aspect of the present invention, in the first aspect, the second portion is provided at a position below the starting end side of the chaff sheave (19) on the opposite side of the third sorting air passage (35) in the swing sorting shelf (15). A transfer shelf (37) is provided.

According to a third aspect of the present invention, in the first or second aspect, the arrangement pitch on the starting end side of the chaff sheave (19) facing the second transfer rack (37) is set shorter than the arrangement pitch on the terminal end side. It is characterized by having done.

According to a fourth aspect of the present invention, in the first, second or third aspect, the second transfer rack (37) has a rack-shaped upper surface and a flat lower surface. It is characterized by

According to a fifth aspect of the present invention, in the first or second aspect, the third aspect, or the fourth aspect, the starting end side of the wind split body (30, 31, 32) is provided with a blade of the Karako (24). It is characterized in that they are set to be equidistant from each other on the substantially concentric circle from the axis center (Q).

The present invention according to claim 6 provides the layer thickness sensor according to claim 1, 2 or 3, or 4 or 5, for detecting a layer thickness of a processed material on the transfer rack (17). (40) is provided, and when the grain culm sensor for detecting the presence or absence of grain culm provided in the mowing section (3) is not detected and the layer thickness level of the layer thickness sensor (40) is small, the wind split body at the bottom stage (30) is characterized in that the front side rotates downward with the rear side as a rotation fulcrum.

According to the invention described in claim 1, three wind splitting bodies (30, 31, 32) of an upper stage, a middle stage, and a lower stage for branching the blowing direction of the sorting wind from the Karako (24) are provided, and the wind splitting of the upper stage is performed. The sorting air from the sorting air passages below and above the body can sufficiently act on the lower side and the starting end side of the chaff sheave, the sorting performance is further improved, and the same as when a pre-fan is provided on the front side of the Kara Minoh. Wind selection effect can be expected.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the chaff sheave (19) is provided on the opposite side of the third sorting air passage (35) in the swing sorting shelf (15). By providing the second transfer rack (37) at the lower part of the starting end side, the chaff sheave starts to send the treated material with a lot of straw scraps, and drops it onto the granive sieve while receiving the sorting wind from below to sort it by sieving. It is possible to improve the sorting performance.

In addition to the effect of the invention according to claim 1 or claim 2, the invention according to claim 3 faces the second transfer rack (37) on the starting end side of the chaff sheave because the mainstream of Karafu wind does not blow. By setting the arrangement pitch on the starting end side of the chaff sheave (19) shorter than the arrangement pitch on the terminal end side, there is little chipping and inclusion of foreign substances, and it can be sent to the terminal end side and processed by Straw rack, the first sorting performance. Can be improved.

According to the invention of claim 4, in addition to the effect of the invention of claim 1, claim 2, or claim 3, the second transfer rack (37) has a rack-shaped upper surface. As a result, the transportation and dispersion of the processed material is promoted, and the lower surface is formed flat, so that the sorting wind from Kara-mitsu can be efficiently guided to the lower side of the chaff sheave, and the sorting performance can be improved. Can be expected.

According to the invention of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the start end side of each of the wind split bodies (30, 31, 32) is connected to the Karato By setting the blades in (24) equidistantly from the shaft center (Q) of the blade, the Karafu wind can be evenly distributed.

According to the invention of claim 6, in addition to the effect of claim 1 or claim 2 or claim 3 or claim 4 or claim 5, when the corner of the combine turns, the grain culm sensor is in an undetected state. Although the layer thickness sensor detects a low level of the processed material, the windbreaker in the lowermost stage acts so that the start end side pivots downward with the end side as a fulcrum to block the first selection wind passage. By weakening or blocking the sorting wind on the 1st returning rack, scattering from the tip of the 1st returning rack to the 2nd transfer spiral can be reduced, and the 2nd reduction amount can be reduced to turn the corner. The loss of can be minimized.

Side view of combine Top view of combine Vertical side view of the main part of the threshing device Rear view of the main part of the Glen tank Same as above, side sectional view of essential parts

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 show a combine harvester that cuts and harvests a self-propelled grain culm that stands in the field. Equipped with a mowing unit 3 that cultivates and raises grain culms, cuts them, and conveys them backward. It is installed.

A cabin 7 having an operating part such as a driver's seat 6 is installed on the lateral side of the reaping unit 3, and a grain tank 8 for temporarily storing grains is mounted behind the cabin 7, and the grains are full in the tank. Then, the discharge auger 9 discharges it to the outside of the machine.

The threshing device 5 has a handling chamber 11 in which a handling cylinder 10 is installed on the upper side, and the grain that has been shattered is allowed to leak from a receiving net 12, and a dust outlet 13 is opened on the end side of the handling chamber. Then, the dust is discharged from the dust outlet 13 into the dust rack 14 and sieved. A dust exhaust fan 15 is installed above the tip of the dust exhaust rack 14.

A swinging sorting rack 16 configured to receive the processed products after threshing treatment and perform sieving and sorting while swinging and transferring the processed products after threshing treatment is provided in a sorting chamber configured from the lower side to the rear side of the handling chamber 11. The swing sorting shelf 15 is arranged in the order of a transfer shelf 17, a chaff rack 18, a chaff sheave 19, and a straw rack 20 from the upper side in the sorting direction, and below the chaff sheave 19, there is a Glen sieve 21, The first return shelf 22 and the second return shelf 23 are arranged and provided.

In addition, below the rocking sorting shelf 16, in order from the upper side in the sorting direction, the Karako 24, the No. 1 recovery gutter 25 having the No. 1 transfer spiral 25a, and the No. 2 recovery receiver having the No. 2 transfer spiral 26a. The gutter 26 is provided. Further, a second fan 27 is provided between the first recovery gutter 25 and the second recovery gutter 26.

Three upper, middle, and lower windbreakers 30, 31, and 32 are provided to disperse the sorted wind from the Karato 24. Then, with respect to the lower windbreak body 30, the interrupted windbreak body 31, and the upper windbreak body 32, the first sorting wind passage 33, the second sorting wind passage 34, the third sorting wind passage 35, and the third sorting wind passage 35 in order from the bottom. The four sorting air ducts 36 are configured.

The first sorting wind passage 33 is adapted to perform wind selection by the sorting wind flowing through the first transfer spiral 25a and the first returning rack 22. The second sorting wind passage 34 includes the gren sheave 21 and the chaff sheave 19. The selection wind that flows toward the second half side is selected, and the third selection wind passage 35 is selected by the selection wind that blows through the middle side of the chaff sheave 19. Further, the fourth selection air passage 36 is configured to perform the air selection by the selection air that acts on the starting end side of the chaff sheave 19 along the lower surface of the tip of the transfer rack 17.

Therefore, by providing the upper, middle, and lower three wind split bodies 30, 31, 32 to disperse the sorted wind of the Karako 24, in particular, the lower and upper sorting wind passages 35 of the upper wind split body 32 are provided. In this case, the sorting wind from the 36, 36 can sufficiently act on the lower side and the starting end side of the chaff sheave 19, the sorting performance is further improved, and a pre-fan is provided on the front side of the Karako to enhance the wind sorting effect. The same wind selection effect can be expected, the sorting performance is further improved, and it is not necessary to provide a pre-fan, so that the cost can be reduced.

By providing the second transfer shelf 37 below the start end side of the chaff sheave 19 on the opposite side of the third sorting air passage 35, the treated product containing a lot of straw from the start end side of the chaff sheave 19 is received and sent while being judged, and is fed from below. It is possible to drop the powder on the Glen Sieve 21 while receiving the sorting wind and perform sieving sorting, and the sorting performance is further improved.

Further, since the range of each pitch L1 on the starting end side of the chaff sheave 19 facing the second transfer rack 37 is narrower than the range of each pitch L2 on the terminating side (rear side), the starting end side of the chaff sheave is: Since the mainstream of Karafu wind does not blow, the range of the starting end side L1 of the chaff sheave facing the second transfer rack is narrower than the pitch of the starting end side of each sheave plate and the range of L2 on the rear side. It is possible to send it to the end side and process it with a straw rack so that the number one sorting performance can be improved.

Furthermore, the second transfer rack 37 has an upper surface formed in a rack shape for better feeding, and a lower surface is laid with a flat plate for better sliding. Therefore, the upper surface facilitates the transportation and dispersion of the processed material, and the lower surface can smoothly and efficiently guide the sorting air from the Karato to the lower side of the chaff sheave.

The start end side of each of the wind split bodies 31, 32, 33 is arranged to be equidistant from the shaft core Q of the Karako 24 on a substantially concentric circle. According to this, it is possible to evenly distribute the Karafu wind to each air passage.

The windbreaker 30 in the lowermost stage is configured to be controllable so that the front side rotates up and down with the horizontal shaft 39 on the rear side as a pivot.

A layer thickness sensor 40 for detecting the layer thickness of the processed material is provided on the transfer shelf 37, and a grain culm sensor for detecting the presence or absence of grain culm is provided in the cutting unit, so that the grain is cultivated when the corner turns. The culm sensor is in the undetected state. At this time, when the layer thickness sensor 40 detects a small layer thickness level, the windbreak body 30 at the lowermost stage is configured to control the rear side to rotate downward on the front side around the rotation fulcrum 39. .. According to this, it acts in the direction of closing the first selection air passage 33, weakening or blocking the selection air on the first return shelf 22 and moving from the tip of the first return shelf to the second transfer spiral 26a. It is possible to minimize the scattering at the corners and to reduce the amount of No. 2 reduction to minimize the loss during cornering.

Explaining the embodiment shown in FIG. 4 and FIG. 5, in the conveying spiral 42 that is discharged to the outside of the machine when the grain in the Glen tank is full, the upper side of the conveying spiral 42 has a mountain shape that distributes the grains to the left and right sides of the spiral. The spiral cover 43 is provided, and the spiral cover has a top portion formed at an acute angle, and the mounting position is increased so that the extension line of the spiral cover is larger than the outer diameter of the conveying spiral. According to the conventional spiral cover, many of them have a top portion formed at a right angle, and there is a problem that the grain is stagnant on the spiral cover during discharging and the discharging time becomes long. According to the above-mentioned present example, by making the spiral cover an acute angle, the flow of grains on the spiral cover is improved, and the discharging time can be shortened. Further, by increasing the mounting position, the space inside the conveying spiral and the spiral cover can be enlarged, and there is a margin for the grains to escape upward at the time of discharge start, leading to a reduction in load at start.

Further, in the above configuration of the Glen tank, as shown in FIG. 5, a downward sloping flow-down guide 45 is provided to guide the flow downward from the vicinity of the end of the spiral cover 43 toward the upper surface of the Glen tank discharge port 44. According to this, since the grain sent along the spiral cover is directed to the discharge port of the tank by the flow-down guide, the grain does not hit the wall surface of the Glen tank, and the occurrence of clogging and unpulling can be reduced. ..

Next, although illustration is omitted, the output rotation of the HST (hydraulic continuously variable transmission) is slightly increased to reduce the turning shock during the alignment operation during mowing. It has various effects. That is, when it is detected that the left and right operation levers are aligned, electronically controlled the HST output rotation is automatically and slightly increased, and the rotation outside rotation is also slightly increased. It reduces sudden braking shocks and enables smooth turning to correct the direction.

Further, the HST drive speed increase amount may be varied depending on the vehicle speed. According to this, by correcting the control amount in proportion to the vehicle speed, the correction accuracy is improved.

During the alignment operation, the vehicle height on the outside of the turning should be automatically raised to suppress the inclination of the reaping section due to inertia so that the cut marks will not be deteriorated. The part (and car body) is held horizontally, and the cut marks do not deteriorate.

The narrow guide is automatically stored when the switch is pressed before cutting the edge of the furrow, and the working speed can be limited. According to such a configuration, the damage can be prevented before the narrow guide collides with the concrete ridge or the like when cutting the ridge. Further, by limiting the working speed, it is possible to prevent damage to the mowing part and the like.

In a combine equipped with a GPS, the narrow guide is automatically stored by the GPS when approaching a ridge, and the working speed can be limited.

In addition, in a combine equipped with GPS, when a narrow guide is automatically stored when approaching a ridge, and when a ridge cutting mode for limiting the working speed is executed, a buzzer and a monitor should inform the worker. Good.

Further, in the program for executing the function of limiting the working speed by automatically storing the narrow guide when approaching the edge by GPS, the narrow guide is automatically expanded to the weeding action state when the distance from the edge is increased and the cutting speed is reduced. The restrictions are also lifted and the normal reaping work is started.

It should be noted that it is advisable to notify the operator by means of a buzzer and a monitor even when shifting to normal mowing work.

In the structure of the discharge transport spiral at the bottom of the Glen tank, two transport spirals are provided in parallel on the left and right. Then, the grains conveyed by the two conveying spirals are merged behind the Glen tank, and the front end of the conveying spiral located inside the machine body (on the left side) is located behind the other side. In other words, the right spiral is projected more forward than the left spiral, and the Glen tank itself is also projected forward. According to this, the merging is easy and the lower portion of the Glen tank can be widened, so that the capacity can be increased. Moreover, the height of the Glen tank can be reduced by that much, and the visibility is improved.

Further, by setting the conveying spiral inside the machine body to a position higher than the conveying spiral outside, it is possible to arrange a hose, a harness, etc. at the lower portion thereof.

The two conveying spirals have their spiral winding directions reversed and their rotation directions reversed. Then, if the grain intake port to the spiral is set to the side away, the grain intake ports to the two conveying spirals are separated, so even if a bridge occurs on one side, the intake proceeds to the other side and The grain will move and the bridge will disappear.

Further, if the grain intake ports to the two conveying spirals are made to approach each other, the grain in the tank moves greatly from the start of the intake, and the bridge does not occur.

16 Swing Sorting Shelf 17 Transfer Shelf 19 Chaf Sheave 20 Straw Rack 21 Glen Sheave 22 1st Return Shelf 24 Karano 25a 1st Transfer Spiral 30 Wind Splitter (Bottom)
31 Wind split (medium)
32 Wind split (top)
33 1st selection air duct 34 2nd selection air duct 35 3rd selection air duct 36 4th selection air duct 37 2nd transfer rack 39 Horizontal axis (fulcrum)
40 Layer thickness sensor 33 Sorting air duct D1 Inlet side width D2 Outlet side width Y1 Tangling fan tangential direction Y2 Tangling fan tangential direction

Claims (6)

Three windbreakers (30, 31, 32), which are the upper, middle, and lower stages for branching the blowing direction of the selection wind from Kara (24), are provided between the windbreaks (30, 31, 32). , A first sorting air duct (33), a second sorting air duct (34), a third sorting air duct (35), and a fourth sorting air duct (36) in this order from the bottom, and the first sorting air duct ( The sorting wind sent from 33) is the No. 1 return rack (22) provided on the upper side of the No. 1 transfer spiral (25a) arranged on the rear side of the Karatsu (24) and the lower part of the swing sorting rack (15). ) The sorting wind that flows through the upper side and is wind-selected and is blown from the second sorting wind passage (34) is a gren sheave (21) and a chaff sheave (19) provided at an intermediate portion in the front-rear direction of the swing sorting shelf (15). ), the wind is selected toward the latter half, and the selection air blown from the third selection air passage (35) blows through the middle side of the chaff sheave (19) and is selected to obtain the fourth selection air. The sorting air blown from the passage (36) acts on the starting end side of the chaff sheave (19) along the lower surface of the tip of the transfer shelf (17) provided at the front part of the swing sorting shelf (15) to select the wind. This is a combine thresher sorting device. The second transfer rack (37) according to claim 1, wherein a second transfer rack (37) is provided at a portion of the rocking sort rack (15) opposite to the third sort air passage (35) and below the starting end side of the chaff sheave (19). Sorting equipment for thresher in combine. The thresher sorting apparatus in the combine harvester according to claim 1 or 2, wherein the arrangement pitch on the starting end side of the chaff sheave (19) facing the second transfer rack (37) is set shorter than the arrangement pitch on the end side. The sorting apparatus for a threshing machine in a combine according to claim 1, 2 or 3, wherein the second transfer rack (37) has a rack-shaped upper surface and a flat lower surface. The starting end side of each of the wind split bodies (30, 31, 32) is set to be equidistant from the shaft center (Q) of the blade of the Karato (24) on a substantially concentric circle. A thresher sorting device in the combine according to any one of claims. A layer thickness sensor (40) for detecting the layer thickness of the processed material is provided on the transfer shelf (17), and the grain culm sensor for detecting the presence or absence of grain culm provided in the cutting unit (3) is not detected and the layer thickness is not detected. When the sensor (40) has a small layer thickness level, the windbreak body (30) at the lowermost stage is configured so that the front side rotates downward with the rear side as a rotation fulcrum. 1 or claim 2 or claim 3 or claim 4 or claim 5 the thresher sorting device in the combine.

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