Combine-harvester

Abstract

To provide a combine-harvester capable of properly dropping waste straw shredded by a waste straw processing device outside the machine and preventing the movement of grains from being obstructed by clogging of waste straw in order to solve such a problem that, even though a combine-harvester is known in which a dust-removal processing drum is provided behind a secondary processing drum disposed on the right side of a threshing drum, a dust-removal fan is provided behind the threshing drum, and a waste straw processing device is provided behind an oscillation sorting shelf and the dust-removal processing drum, part of the waste straw shredded by the waste straw processing device may accumulate near a processing drum outlet of the dust-removal processing drum, thereby hindering the return of grains to the oscillation sorting shelf.SOLUTION: A combine-harvester comprises: a dust-removal processing drum 45 that processes a mixture of grains and foreign matters sorted by an oscillation sorting shelf 36 which sorts grains and foreign matters subjected to threshing processing by a threshing device 6, returns the grains to the oscillation sorting shelf 36 and discharges the foreign matters outside the machine; and a regulating plate 50 that is provided at a processing drum outlet 45a which returns the grains in the dust-removal processing drum 45 to the oscillation sorting shelf 36, regulates movement of the waste straw shredded by a waste straw processing device 9 and drops the waste straw outside the machine.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a combine equipped with a threshing device for threshing cereal straws cut by a cutting device.

Background Art

[0002] Conventionally, there is a combine in which a dust removal processing cylinder is provided at the rear side of the second processing cylinder provided on the right side of the handling cylinder, a dust removal fan is provided behind the handling cylinder, and a straw discharging processing device is provided behind a swing sorting shelf and the dust removal processing cylinder (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to a conventional combine, it is difficult for grains to mix into the straws discharged outside the machine, and the yield loss is suppressed, and the straws can be cut and discharged by a straw discharging processing device provided behind a swing sorting shelf and a dust removal processing cylinder. However, there is a risk that a part of the shredded straw scraps in the straw discharging processing device accumulates near the processing cylinder outlet of the dust removal processing cylinder, preventing the grains from returning to the swing sorting shelf.

[0005] Therefore, the present invention provides a combine that properly drops the shredded straw scraps from the straw discharging processing device outside the machine and does not prevent the movement of grains due to clogging of the straws.

Means for Solving the Problems

[0006] The invention according to claim 1 is a combine harvester equipped with a traveling device 4, a cutting device 15, a threshing device 6, and a straw discharging and processing device 9. In the combine harvester, a dust removing processing cylinder 45 is provided for processing a mixture of grains and impurities selected by a swinging sorting shelf 36 that sorts the threshed grains and impurities of the threshing device 6, returning the grains to the swinging sorting shelf 36, and discharging the impurities outside the machine. A regulating plate 50 is provided at the processing cylinder outlet 45a of the dust removing processing cylinder 45 to regulate the movement of the straw shredded by the straw discharging and processing device 9 and cause it to fall outside the machine.

[0007] According to the invention described in claim 1, the operation of removing the straw that blocks the processing cylinder outlet 45a of the dust removing processing cylinder 45 becomes unnecessary, the harvesting operation is not interrupted, and the work efficiency can be improved.

[0008] The invention according to claim 2 is the combine harvester according to claim 1, wherein the lower end of the regulating plate 50 is located on the rear side of the machine body behind the rear part of the swinging sorting shelf 36 and on the front side of the machine body from a lower guide 46a that guides the exhaust air of a dust removing fan 46 provided behind the handling cylinder 31. The lower end of the regulating plate 50 is located above the upper end of the swinging sorting shelf 36 and below the lower end of the processing cylinder outlet 45a of the dust removing processing cylinder 45. Moreover, the left or right one-side end of the regulating plate 50 on the handling cylinder 31 side is arranged at a position overlapping with the lower guide 46a of the dust removing fan 46 when viewed from the rear.

[0009] According to the invention described in claim 2, since the regulating plate 50 is arranged at a position where it does not block the processing cylinder outlet 45a of the dust removing processing cylinder 45, the grains can be surely returned to the swinging sorting shelf 36, and it is possible to prevent the grains from remaining in the threshing device 6.

[0010] The invention according to claim 3 is the combine harvester according to claim 2, wherein the regulating plate 50 is provided so as to be detachable and capable of changing its vertical position.

[0011] According to the invention described in claim 3, when the regulating plate 50 is not required, such as during an operation where the straw is not shredded by the straw discharging and processing device 9, it can be removed to prevent the regulating plate 50 from affecting the movement of the grains.

[0012] In addition, since the position of the regulating plate 50 can be adjusted according to the shredded length and the working environment, the entry of the straw can be more reliably prevented.

[0013] The invention according to claim 4 is a combine according to any one of claims 1 to 3, wherein a fuel tank 25 is provided at the lower rear side of the threshing device 6, the fuel tank 25 protrudes laterally to the left and right from the lower sides of the left and right side plates 6L, 6R of the threshing device 6, a fuel filling port 25c integrally formed with the fuel tank 25 is provided outside the left side plate 6L, and an air breather 25b is provided outside the right side plate 6R.

[0014] According to the invention described in claim 4, by increasing the capacity of the fuel tank 25, the operating time can be extended.

[0015] In addition, by arranging the fuel filling port 25c integrally formed with the fuel tank 25 to face the outside of the machine body, a hose connecting the fuel filling port 25c and the fuel tank 25 becomes unnecessary, and the number of parts can be reduced.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

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Figure 9

Figure 10

Modes for Carrying Out the Invention

[0017] Hereinafter, a combine harvester 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings. For ease of understanding, for the sake of convenience, the front side is referred to as the front, the rear side as the rear, the right hand side as the right side, and the left hand side as the left side when viewed from the operator, but the configuration is not limited thereby.

[0018] <Overall Configuration of Combine Harvester> As shown in FIGS. 1 and 2, the combine harvester 1 is provided with a traveling device 4 having a pair of left and right traveling crawlers 3 that travel on the soil surface on the lower side of the vehicle body 2, and on the left and right of the vehicle body 2, a threshing device 6 that threshes and separates the grain straws that are conveyed and supplied while being clamped by the feed chain 5, a grain tank 7 as a storage device that temporarily stores the grains, a discharge auger 8 that discharges the grains stored in the grain tank 7 to the outside of the machine, and a straw discharge processing device 9 is mounted on the rear end portion of the threshing device 6. The discharge auger 8 rises and falls by operating the auger lifting cylinder when discharging the grains.

[0019] In front of the threshing device 6, there are provided a weeding body 11 that weeds the uncut grain straws from the front end side, a raising part 12 that raises the weeded grain straws, a cutting blade part 13 that cuts the raised grain straws, and a supply adjustment conveyance part that rakes in the cut grain straws and adjusts the handling depth during conveyance and transfers them to the feed chain 5. The cutting device 15 having the like is suspended and disposed at the front end portion of the vehicle body 2 so as to be movable up and down with respect to the soil surface by a cutting elevation cylinder.

[0020] An operating device for operating and controlling the combine harvester 1 and an operator's seat on which the operator sits are provided at the upper part on the rear side of the cutting device 15. An engine is mounted below the operator's seat, the grain tank 7 is disposed on the rear side, and a cabin 16 that covers the operating device and the operator's seat is provided. These traveling device 4, threshing device 6, cutting device 15, operating device, engine, cabin 16, etc. are mounted on the vehicle body 2 of the combine harvester.

[0021] The operating device includes a main shift lever that actuates a shift actuator for switching between forward and reverse and main shift by the forward and backward operations of the operator seated on the operator's seat, a left and right travel actuator that operates the left and right side clutches and left and right side brakes of the left and right travel crawlers 3, 3 by tilting operations to the left and right sides to perform left and right steering during straight travel and turning in various turning modes, a steering lever that actuates a cutting elevation cylinder by an operation in the front-rear direction to raise and lower the cutting device 15, a threshing clutch lever that actuates a threshing clutch actuator to turn on and off the drive of the cutting device 15 and the threshing device 6, an auger operation lever that moves the grain discharging auger 8 vertically by the operation of an auger elevation cylinder and horizontally by the operation of a left and right turning actuator, and various operating tools such as an auger drive switching lever that actuates an auger drive electromagnetic clutch for turning on and off the drive of the grain discharging auger 8 to discharge the grain in the grain tank 7 outside the machine body.

[0022] On the upper right side (or upper left side) of the cutting device 15, a support frame 17 extending upward is provided, and a work light 18 composed of LED lighting that illuminates the front and right side (or front and left and right sides) of the cutting device 15 is provided on the support frame 17 to improve night visibility. Also, a side mirror 19 is provided on the support frame 17.

[0023] On the upper right side of the cutting device 15, a work light 20 composed of LED lighting that illuminates the lower right side of the rear of the machine body is provided. During night travel, the lower right side of the rear of the machine body and the right travel crawler 3 can be easily visually recognized, improving safety.

[0024] Also, a convex shape 21a is formed at the lower part of a radiator cover 21 that covers the right outer side of an engine mounted below the rear part of the cabin 16 (below the operator's seat), and a work light 22 composed of LED lighting that illuminates downward and rearward is provided on the convex shape 21a. During night travel, the lower right side of the rear of the machine body and the right travel crawler 3 can be easily visually recognized, improving safety.

[0025] Further, a convex shape 7b is formed at the lower part of the under cover 7a on the right side of the grain tank 7, and a work lamp 23 composed of LED lighting that illuminates downward and rearward is provided on the convex shape 7b. During night driving, the visibility of the lower right side at the rear of the machine body and the right traveling crawler 3 becomes easier, improving safety.

[0026] Also, a convex shape 8c is formed at the lower part of the grain discharge auger cover 8b that covers the right outer side of the vertical spiral 8a of the grain discharge auger 8, and a work lamp 24 composed of LED lighting that illuminates downward and rearward is provided on the convex shape 8c. During night driving, the visibility of the lower right side at the rear of the machine body and the right traveling crawler 3 becomes easier, improving safety.

[0027] As shown in FIGS. 3 to 7, the fuel tank 25 is disposed longitudinally in the left - right direction of the machine body on the chassis 2 at the rear of the machine body.

[0028] That is, the left and right bases of the U - shaped split frame 2a in plan view are fixed to the rear end portion of the chassis 2 with bolts, and the fuel tank 25 is placed in the space between the rear end portion of the chassis 2 and the split frame 2a from above and fixed to the split frame 2a with fixing bolts 26.

[0029] Therefore, the fuel tank 25 together with the split frame 2a can be detached from and attached to the rear end portion of the chassis 2, improving the maintainability.

[0030] The right end portion 25a of the fuel tank 25 extends to the right outer side beyond the right side plate 6R of the threshing device 6 and protrudes rearward beyond the rear end portion of the right side plate 6R, and is disposed below the swing shaft 36a of the swing sorting shelf 36 of the threshing device 6, forming a large - capacity tank.

[0031] Also, an air breather 25b is provided on the upper surface of the right end portion 25a that extends to the right outer side beyond the right side plate 6R, so it is outside the threshing device 6 and the air venting property is improved.

[0032] Since the fuel filler neck 25c of the fuel tank 25 is integrally formed with the fuel tank 25 and extends to the left outside beyond the left side plate 6L of the threshing device 6, by exposing the fuel filler neck 25c integrally formed with the fuel tank 25 to the outside of the machine body, a hose connecting the fuel filler neck 25c and the fuel tank 25 becomes unnecessary, the number of parts can be reduced, it is inexpensive, and the fuel supply performance is also good.

[0033] Also, the fuel filler neck 25c of the fuel tank 25 is disposed between the rear frame 6F of the left side plate 6L and the swing shaft 36a of the swing sorting shelf 36, and is disposed inside the left body cover 27.

[0034] Further, since the fuel tank 25 covers the upper part including the part fixed to the split frame 2a at the rear end of the vehicle body 2 with the fuel tank upper cover, the discharged straw from the straw discharge treatment device 9 is discharged without being caught by the fixing part, and the workability and the cleaning property can be improved.

[0035] Also, a bulging portion 25d bulging downward is formed at the bottom of the fuel tank 25, and a fuel suction port 25e and a fuel return port 25f are provided on the right side of the bulging portion 25d. Therefore, a bottom shape is formed as if the right side of the bulging portion 25d is cut out, a space can be formed on the right side of the fuel suction port 25e and the fuel return port 25f, the routing property of the fuel hose is improved, the fuel hose can be shortened, and the cost can be reduced.

[0036] Also, a part of the bottom above the fuel suction port 25e is bulged to have a function of a weir to prevent the flow of fuel due to the inclination of the machine body when the fuel is less, and to prevent air biting when the machine body is inclined. Since only a part of the bottom bulges, when the machine body becomes horizontal, the fuel is in a certain horizontal state on the bottom.

[0037] <Threshing device 6> As shown in FIGS. 8 to 10, a handling chamber 30 for threshing the grain straw cut by the cutting device 15 and conveyed by the feed chain 5 is provided at an upper part on one side of the threshing device 6, and a handling cylinder 31 is mounted on a handling cylinder shaft 32 in the handling chamber 30. The handling cylinder shaft 32 is mounted on the front plate 33 and the middle plate 34A. 34 is a rear plate provided on the rear side of the middle plate 34A.

[0038] The mainly lower side of the handling cylinder 31 is surrounded by the handling net 35.

[0039] Below the handling net 35, the transfer shelf 37 at the starting end of the oscillating sorting shelf 36 is faced. On the oscillating sorting shelf 36 on the lower side of the transfer shelf 37, a sieve 38 for sorting grains and foreign matters is provided, and on the lower side of the sieve 38, a straw rack 39 for transferring straw scraps is provided.

[0040] Below the transfer shelf 37 of the oscillating sorting shelf 36, a winnowing basket 40 is provided, and the winnowing basket 40 blows air in the oscillating direction of the oscillating sorting shelf 36.

[0041] Below the sieve 38 of the oscillating sorting shelf 36, a first conveying auger 41 for conveying the sorted grains to the grain tank 7 is provided.

[0042] Below the straw rack 39 at the rear of the oscillating sorting shelf 36, a second conveying auger 42 for conveying the mixture of straw scraps and grains to the handling chamber 30 is provided.

[0043] At the end of the feed chute 5, a straw discharging conveying device 43 for conveying the processed grain straws is provided, and at the end of the straw discharging conveying device 43, a straw discharging treatment device 9 is provided.

[0044] On the rear right side of the handling cylinder 31, a dust treatment cylinder 45 is provided, and concentric with the dust treatment cylinder 45, a second treatment cylinder is provided on the right side of the handling cylinder 31.

[0045] Also, on the side of the dust treatment cylinder 45 and above the straw rack 39, a dust exhaust fan 46 for sucking the sorting air that blows through from the winnowing basket 40 to the sieve 38 of the oscillating sorting shelf 36 and discharging it outside the machine is provided.

[0046] Therefore, the root side of the grain straw is cut by the cutting device 15, and the cut grain straw is supplied to the threshing device 6 by the feed chute 5.

[0047] The supplied cereal straw is processed in the handling chamber 10. The processed cereal straw is taken over from the feed chain 5 by the straw conveying device 43, conveyed by the straw conveying device 43 to the straw processing device 9, shredded by the cutter 9a of the straw processing device 9, and discharged onto the field.

[0048] The material that has undergone threshing treatment in the handling chamber 10 and flowed down the handling net 35 is received by the oscillating sorting shelf 36, moves backward while being sorted by the sorting air of the winnowing basket 40, and the sorted grains that fall downward from the sieve 38 are conveyed to the grain tank 7 by the first conveying auger 41. The mixture of straw debris and grains that has fallen downward from the straw rack 39 is conveyed by the second conveying auger 42 to the front part of the second processing cylinder in the handling chamber 30.

[0049] Then, the mixture of straw debris and grains conveyed to the front part of the second processing cylinder is conveyed backward from the second processing cylinder to the dust removal processing cylinder 45. The grains fall to the front part of the oscillating sorting shelf 36 in the front part of the second processing cylinder and are sorted again by oscillation. The mixture of straw debris and grains is discharged from the left processing cylinder outlet 45a at the rear part of the dust removal processing cylinder 45 to the rear part of the oscillating sorting shelf 36 and is conveyed again to the front part of the second processing cylinder in the handling chamber 30 by the second conveying auger 42. The contaminants such as straw debris are discharged outside the machine from the rear end of the dust removal processing cylinder 45.

[0050] Note that the straw debris is discharged outside the machine from the right processing cylinder outlet 45b at the rear part of the dust removal processing cylinder 45.

[0051] As described above, since the dust removal processing cylinder 45 is provided concentrically on the rear side of the second processing cylinder provided on the right side of the handling cylinder 31, and the dust removal fan 46 is provided behind the handling cylinder 31, it is difficult for grains to mix into the discharged straw, the yield loss is suppressed, and the straw can be cut and discharged by the straw processing device 9 provided behind the oscillating sorting shelf 36 and the dust removal processing cylinder 45.

[0052] However, there is a possibility that a situation may occur where a part of the straw debris shredded by the straw processing device 9 accumulates near the left processing cylinder outlet 45a of the dust removal processing cylinder 45, preventing the grains from returning to the oscillating sorting shelf 36.

[0053] Therefore, particularly in this embodiment, a regulating plate 50 formed of a rubber plate or the like is provided at the left processing cylinder outlet 45a of the dust removal processing cylinder 45 to restrict the movement of the chopped straw discharged from the straw discharging processing device 9 into the left processing cylinder outlet 45a (prevent it from accumulating near the left processing cylinder outlet 45a) and cause it to fall downward outside the machine body.

[0054] The regulating plate 50 is provided in a hanging state with its upper end portion fixed to the end portion of the left processing cylinder outlet 45a, which is the lower left inclined surface of the casing of the dust removal processing cylinder 45, by bolts so as to be adjustable in upward position and detachable.

[0055] Also, the regulating plate 50 formed of a rubber plate or the like has a thickness that allows it to flutter with the blowing of the winnowing basket 40.

[0056] Also, the regulating plate 50 is arranged so as not to interfere with the front inclined plate 9b of the straw discharging processing device 9.

[0057] The front inclined plate 9b is provided near the inside of the machine body of the cutter 9a of the straw discharging processing device 9 to prevent the chopped straw from moving to the oscillating sorting shelf 36. However, even with the presence of the front inclined plate 9b, the straw may enter the oscillating sorting shelf 36. Therefore, the regulating plate 50 is provided to appropriately prevent the straw from entering the oscillating sorting shelf 36.

[0058] Therefore, the operation of removing the straw that blocks the left processing cylinder outlet 45a of the dust removal processing cylinder 45 as in the prior art becomes unnecessary, the harvesting operation is not interrupted, and the work efficiency can be improved.

[0059] Also, the lower end portion of the regulating plate 50 is located on the front side of the machine body with respect to the lower guide 46a that guides the exhaust air of the dust exhaust fan 46 provided behind the handling cylinder 31 and on the rear side of the machine body with respect to the rear portion of the oscillating sorting shelf 36.

[0060] And the lower end portion of the regulating plate 50 is located above the upper end portion of the oscillating sorting shelf 36 and below the lower end portion of the left processing cylinder outlet 45a of the dust removal processing cylinder 45 with respect to the machine body.

[0061] Then, one of the left and right end portions of the control plate 50 on the handling cylinder 31 side is arranged at a position overlapping with the lower guide 46a of the dust exhaust fan 46 in a rear view.

[0062] Therefore, by arranging the control plate 50 at a position where it does not block the left processing cylinder outlet 45a of the dust exhaust processing cylinder 45, the grains can be surely returned to the swing sorting shelf 36, and it is possible to prevent the grains from staying in the threshing device 6.

[0063] Further, the control plate 50 is detachable and is provided so that its vertical position can be changed to change the position of the lower end portion.

[0064] Therefore, when the control plate 50 is not required during operations such as when the straw is not shredded by the straw processing device 9 (when it is tied with a knocker and discharged to the field as it is), it can be removed to prevent the control plate 50 from affecting the movement of the grains.

[0065] Also, since the position of the control plate 50 can be adjusted according to the shredding length and the working environment, it is possible to more surely prevent the entry of the straw.

Explanation of Reference Numerals

[0066] 4 Traveling device 6 Threshing device 6L Left side plate of the threshing device 6R Right side plate of the threshing device 9 Straw processing device 15 Reaping device 25 Fuel tank 25b Air breather 25c Fuel filler 31 Handling cylinder 36 Swing sorting shelf 45 Dust exhaust processing cylinder 45a Processing cylinder outlet (left processing cylinder outlet) 46 Dust exhaust fan 46a Lower guide 50 Control plate

Claims

1. In a combine harvester equipped with a traveling device (4), a cutting device (15), a threshing device (6), and a straw processing device (9), a dust removal processing cylinder (45) is provided to process a mixture of grains and impurities sorted by a rocking sorting shelf (36) that sorts the threshed grains and impurities of the threshing device (6), returns the grains to the rocking sorting shelf (36), and discharges the impurities outside the machine. A regulating plate (50) is provided at the processing cylinder outlet (45a) of the dust removal processing cylinder (45) that returns the grains to the rocking sorting shelf (36) to regulate the movement of the straw shredded by the straw processing device (9) and cause it to fall outside the machine. The combine harvester is characterized by this.

2. The lower end of the regulating plate (50) is located on the rear side of the machine body behind the rear part of the rocking sorting shelf (36) and in front of the lower guide (46a) that guides the exhaust air of the dust removal fan (46) provided behind the handling cylinder (31). The lower end of the regulating plate (50) is located above the upper end of the rocking sorting shelf (36) and below the lower end of the processing cylinder outlet (45a) of the dust removal processing cylinder (45). Also, the left or right one-side end of the regulating plate (50) on the side of the handling cylinder (31) is arranged at a position that overlaps with the lower guide (46a) of the dust removal fan (46) when viewed from the rear. The combine harvester according to Claim 1 is characterized by this.

3. The combine harvester according to Claim 2 is characterized in that the regulating plate (50) is provided so as to be detachable and its vertical position can be changed.

4. A fuel tank (25) is provided at the lower rear side of the threshing device (6). The fuel tank (25) protrudes laterally to the left and right from the lower sides of the left and right side plates (6L, 6R) of the threshing device (6). A fuel filling port (25c) integrally formed with the fuel tank (25) is provided outside the left side plate (6L), and an air breather (25b) is provided outside the right side plate (6R). The combine harvester according to any one of Claims 1 to 3 is characterized by this.

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