JP2007074931A - Grain discharging apparatus of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reserve an empty space on rearward of a vertical auger of a grain discharging apparatus. <P>SOLUTION: The invention relates to the grain discharging apparatus 20 of the combine harvester provided with the vertical auger 23 and a horizontal auger taking discharged grain from the discharging conveyer in a grain tank 14 and discharging to outside of a body, wherein the vertical auger 23 is rotatably supported on the machine body frame. The machine body frame has a connecting member 24 mounted on the frame and connecting a lower part of the vertical auger 23 and a lower part of the grain tank 14, and the vertical auger 23 is rotatably supported on the connecting member 24, a driving mechanism 30 for rotatably driving the vertical auger is installed on the connecting member 24 and the driving mechanism 30 is placed on the outer side of the body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technology of a combine grain discharging apparatus for discharging grains stored in a Glen tank out of the machine.

Conventionally, in a combine, a grain discharging device is provided to discharge the grain stored in the Glen tank out of the machine. The grain discharging device is composed of a vertical auger with a screw installed in a vertical cylinder, a horizontal auger with a screw installed in a horizontal cylinder, etc., and a vertical auger at the rear end of a discharge conveyor arranged at the inner bottom of the Glen tank. The lower end of the screw is interlocked and connected, and the upper end of the screw is interlocked and connected to one end of the screw of the horizontal auger. Could be discharged out of the machine. The vertical auger is provided with a driving mechanism, and the horizontal auger can be turned together with the vertical auger by the driving mechanism so that the left and right positions of the discharge port can be adjusted (see, for example, Patent Document 1).
JP-A-11-89416

  In the conventional combine grain discharging device, since the drive mechanism for turning the vertical auger is arranged at the rear of the vertical auger, the rotating fulcrum of the waste disposal processing unit provided at the rear of the machine body is provided at the rear of the vertical auger. In this case, when the waste processing part is rotated from the side of the grain discharging device to the rear with the rotation fulcrum as a center, the waste processing part easily comes into contact with the drive mechanism. Therefore, the rotation range of the rejection processing unit is limited to a predetermined rotation range in order to prevent interference between the rejection processing unit and the drive mechanism, but this reduces the maintainability of the rejection processing unit. It was.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, a grain of a combine that includes a vertical auger and a horizontal auger that inherit the grain in the Glen tank from the discharge conveyor and discharges the grain outside the machine, and that supports the vertical auger on the machine frame so as to be rotatable. In the grain discharging apparatus, a connecting member for connecting the lower part of the vertical auger and the lower part of the Glen tank is fixed to the body frame, and the vertical auger is pivotably supported by the connecting member, and the connecting member is used for turning the vertical auger. A drive mechanism is provided, and the drive mechanism is disposed on the side of the machine body.

  In claim 2, a worm wheel is attached to the outer periphery of the vertical auger, a worm and a motor for rotating the worm are attached to a bracket and attached to a bracket, and the worm and the worm wheel are engaged with each other. The drive mechanism is configured.

  In Claim 3, between the vertical auger and the bracket, a first regulating means comprising a detected body provided on the outer periphery of the vertical auger and a pair of detecting bodies provided on the bracket is provided, and the vertical auger is provided. When one of the detection bodies detects the detected body when the auger turns, the motor of the drive mechanism is stopped or reversely driven to restrict the turning of the vertical auger.

  In claim 4, a pair of abutting bodies fixed to a worm wheel on the vertical auger between the vertical auger and a rear frame standing on the body frame on the side of the vertical auger, A second restricting means comprising a restricting body fixed to the rear frame is provided, and any one abutting body abuts the restricting body when the vertical auger is swiveled so as to restrict the swiveling of the vertical auger. It is a thing.

  In Claim 5, the rear frame provided on the body frame and the cereal cylinder connected to the upper part of the Glen tank are connected by a connecting frame, and the vertical auger is supported in the middle of the connecting frame. Is.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, an empty space can be secured behind the vertical auger. Therefore, when the rotation fulcrum of the waste disposal unit provided at the rear of the machine body is arranged in the empty space, and the waste disposal unit is configured to be rotatable from the side of the grain discharging device to the rear, Interference between the waste disposal unit and the drive mechanism can be prevented, and the rotation range of the waste disposal device can be expanded. The waste disposal unit can be greatly opened to improve maintainability.

  In Claim 2, it becomes easy to set a large reduction ratio, and the vertical auger can be turned slowly to improve safety. Since the worm drive system is self-locking with respect to reverse drive (the worm is not rotationally driven from the worm wheel side), when using the grain discharging device with the machine body tilted, the brake device is not used. The swivel position of the vertical auger can be maintained. Further, the worm and the actuator can be unitized by a bracket and can be easily attached to the connecting member.

  According to the third aspect, the turning range of the vertical auger can be limited to a predetermined turning range. Further, the first restricting means can be simply configured by attaching the pair of left and right detection bodies to the connecting member together with the motor and worm of the drive mechanism with the bracket.

  According to the fourth aspect of the present invention, even when the first restricting means does not act on the vertical auger, the second restricting means always acts so that the turning of the vertical auger can be surely restricted. Therefore, it is possible to prevent the vertical auger from turning by 180 degrees or more with respect to the connecting member, and it is possible to prevent the cable or the like extending from the connecting member side to the vertical auger side from being broken due to excessive rotation.

  According to the fifth aspect of the present invention, the vertical auger can be reliably held in the standing state with respect to the left-right direction and the front-rear direction and also when turning. Furthermore, the vertical auger can be held in a highly rigid state with a small amount of material.

  1 is a side view of a combine according to an embodiment of the present invention, FIG. 2 is a plan view of the combine according to an embodiment of the present invention, FIG. 3 is a side view of a grain discharging device, and FIG. 4 is a kernel discharging device. 5 is a side view of the drive mechanism, FIG. 6 is a rear view of the drive mechanism, FIG. 7 is a cross-sectional view taken along arrow AA in FIG. 5, and FIG. 8 is a cross-sectional view taken along arrow BB in FIG. 9 is a cross-sectional view taken along the line CC in FIG.

  As shown in FIGS. 1 and 2, in the combine, an airframe frame 2 is supported on a crawler type traveling device 1, and a threshing portion 3 and a sorting portion 4 are provided on the airframe frame 2. A cutting unit 5 is disposed in front of the threshing unit 3 and the sorting unit 4 and is supported by the body frame 2 so as to be movable up and down. The reaping unit 5 is provided with a pulling device 6, a reaping device 7, a transporting device 8, and the like. Be transported.

  The threshing unit 3 is provided with a feed chain 9, a handling cylinder 10 and the like, and the cereals from the conveying device 8 of the reaping unit 5 are inherited by the feed chain 9 at the stock portion and conveyed toward the rear of the machine body. In the process, the tip portion of the cereal husk is threshed by the handling cylinder 10 in the handling chamber. The cereal after threshing is conveyed to the slaughter processing unit 11 behind the threshing unit 3 as sewage, while the grains and scum generated with the threshing flow down to the sorting unit 4 below the threshing unit 3. .

  The waste processing unit 11 includes a waste chain 12, a waste cutter device, a diffusion conveyor, and the like, and the waste passed down from the feed chain 9 of the threshing unit 3 to the waste chain 12 is transferred to the waste cutter device. After being transported and cut, it can be released to the field while being diffused by a diffusion conveyor in the state of a splinter. Further, by changing the conveying method in the waste disposal unit 11, the waste is not cut by the waste cutter device but is transported to the rear end of the machine body by the waste chain 12, and then released to the field in an uncut state. It is possible.

  On the other hand, the sorting unit 4 is provided with a swing sorting device, a conveyor for conveyance, a fan, and the like, and the grains and swarf flowing down from the threshing unit 3 are sorted by swing sorting and wind sorting. After sorting, sawdust is discharged out of the machine by a fan. Further, the grain is transported from the No. 1 conveyor to the Glen tank 14 by the conveyor housed in the whipping cylinder 13 fixed on the outer surface of the handling room, and stored in the Glen tank 14.

  The Glen tank 14 is supported on the body frame 2 on the side of the threshing unit 3 and the sorting unit 4. A discharge conveyor 15 is provided at the inner bottom of the Glen tank 14 in the front-rear direction, and the grains stored in the Glen tank 14 are arranged in a grain discharge device 20 arranged from the rear to the top of the Glen tank 14 by the discharge conveyor 15. It is conveyed and can be discharged out of the machine from the grain discharging device 20.

  A driving operation unit 16 is disposed in front of the Glen tank 14. The operation unit 16 is provided with operation devices such as a seat 17, a steering handle 18, and a lever 19, and each unit can be arbitrarily driven by the operation device, and a harvesting operation by a combine can be performed. .

  As shown in FIG. 3, the grain discharging device 20 includes a vertical auger 23 in which a screw 21 is installed in a vertical cylinder 22, a horizontal auger 27 in which a screw 25 is installed in a horizontal cylinder 26, and the like, and the vertical cylinder 22 is a Glen tank. 14 is disposed rearward and is erected in the vertical direction, the horizontal cylinder 26 is disposed above the grain tank 14, and a midway portion in the longitudinal direction is supported by the auger rest 28. The vertical auger 23 and the horizontal auger 27 are connected to each other by an upper end of the vertical cylinder 22 and a base end of the horizontal cylinder 26 so as to be rotatable up and down, and are communicated by a connecting portion of the vertical cylinder 22 and the horizontal cylinder 26. The screw 21 of the vertical auger 23 and the screw 25 of the horizontal auger 27 are interlocked and connected within the connecting portion of the vertical cylinder 22 and the horizontal cylinder 26.

  The vertical auger 23 is supported on the connecting member 24 at the lower end of the vertical cylinder 22 so as to be rotatable about the vertical axis. The connecting member 24 is formed from a substantially “L” -shaped cylindrical body in a side view, and is erected on the body frame 2 behind the grain tank 14. The connecting member 24 is connected to an opening provided at the rear lower portion of the Glen tank 14 at one end in the horizontal direction and communicates with the Glen tank 14, and communicates with the vertical cylinder 22 at the other end in the vertical direction. The vertical auger 23 and the Glen tank 14 are communicated with each other via a connecting member 24.

  In the connecting member 24, one end of the screw 21 of the vertical auger 23 protrudes from the vertical cylinder 22, and one end of the discharge conveyor 15 of the glen tank 14 protrudes from the opening, and these are linked and connected. . Thus, the rotational driving force of the discharge conveyor 15 is transmitted in the order of the screw 21 of the vertical auger 23 and the screw 25 of the horizontal auger 27, and the screws 21 and 25 of the vertical auger 23 and the horizontal auger 27 are accompanied by the rotational drive of the discharge conveyor 15. And can be rotated.

  As a result, the grains stored in the Glen tank 14 are transported by the transport conveyor 15, inherited by the screw 21 of the vertical auger 23 within the connecting member 24, and transported vertically in the vertical cylinder 22. The And the grain conveyed by this vertical auger 23 is inherited by the screw 25 of the horizontal auger 27 in the connection part of the vertical cylinder 22 and the horizontal cylinder 26, and is conveyed by the horizontal direction toward the front end side in the horizontal cylinder 26, A discharge port 27a provided at the tip of the horizontal cylinder 26 can be discharged out of the machine.

  Further, in the vicinity of the connecting portion between the vertical cylinder 22 and the horizontal cylinder 26, an elevating cylinder 29 is interposed between the vertical cylinder 22 and the horizontal cylinder 26. 22 can be rotated in the vertical direction. That is, the horizontal auger 27 can be moved up and down with respect to the vertical auger 23. Thus, the vertical height position of the discharge port 27a at the distal end of the horizontal auger 27 can be adjusted.

  Further, a drive mechanism 30 for rotating the vertical cylinder 22 with respect to the connection member 24 is provided at a connection portion between the vertical cylinder 22 and the connection member 24, and the vertical auger 23 can be turned by the drive mechanism 30. In this way, as the vertical auger 23 turns, the horizontal auger 27 is also turned integrally around the vertical auger 23, and the left and right positions of the discharge port 27a at the tip of the horizontal auger 27 can be adjusted. In this way, the vertical auger 23 and the horizontal auger 27 are moved up and down or swiveled with respect to the machine body by the lifting cylinder 29 and the drive mechanism 30, and the grain in the glen tank 14 can be discharged to an arbitrary place by the grain discharging device 20. It is said that.

  In the grain discharging apparatus 20 configured as described above, as shown in FIG. 4, the drive mechanism 30 is not behind the vertical auger 23 and the connecting member 24 but on the side (in the present embodiment, on the right side in the aircraft traveling direction). Is arranged. In particular, here, as shown in FIG. 2, the drive mechanism 30 is located at the rear of the Glen tank 14, located in the open space on the right side of the vertical auger 23, and facing the outer side of the machine body. An empty space is secured behind the connecting member 24 and the connecting member 24. A rotating fulcrum 11 a of the waste disposal unit 11 is disposed behind the grain ejector 20 so as to approach the rear part of the vertical auger 23.

  Therefore, when the waste disposal unit 11 is rotated from the side of the vertical auger 23 toward the rear side as indicated by the arrow shown in FIG. 2 around the pivot point 11a for maintenance or the like, the waste disposal unit 11 is a forward position, and the vertical auger side corner portion of the waste disposal unit 11 is located in the empty space on the right side of the waste disposal unit 11 without interfering with the drive mechanism 30. become. Therefore, the rotation range of the waste disposal processing section 11 can be expanded, and the waste disposal processing section 11 can be greatly opened to improve maintenance performance.

  As shown in FIGS. 5 to 7, the drive mechanism 30 includes a motor 31 or a worm 32 as a rotation actuator attached to the connecting member 24 side, a worm wheel 33 attached to the vertical auger 23 side, and the like. The worm 32 is supported by the bracket 35 together with the motor 31, and is coupled to a motor shaft protruding from the motor 31 via a speed reduction mechanism. A cover 36 is attached to the outside of the body of the bracket 35, and the motor 31 and the worm 32 are covered by the cover 36.

  The motor 31 and the worm 32 are collectively attached to the connecting member 24 by fixing the bracket 35 to the connecting member 24. That is, the motor 31 and the worm 32 are unitized in advance by the bracket 35 before being attached to the connecting member 24, and can be attached more easily than attaching them separately to the connecting member 24.

  The worm wheel 33 is fixed to the lower outer periphery of the vertical cylinder 22 of the vertical auger 23. Then, the bracket 35 that supports the motor 31 and the worm 32 is fixed to the outside of the connecting member 24 and the worm 32 is engaged with the worm wheel 33. Thus, the worm 32 is rotated by the rotation drive of the motor 31, whereby the worm wheel 33 is rotated, and the vertical cylinder 22 can be rotated integrally with the worm wheel 33. That is, the vertical auger 23 and the horizontal auger 27 can be turned by the drive mechanism 30.

  In this way, the worm wheel 33 is attached to the outer periphery of the vertical auger 23, the worm 32 and the motor 31 for rotating the worm 32 are supported by the bracket 35 and attached to the connecting member 24, and the worm 32 and the worm wheel are attached. Since the drive mechanism 30 is configured by meshing with the gear 33, it is easy to set a large reduction ratio, and the vertical auger 23 can be turned slowly to improve safety. Furthermore, when using the grain discharging apparatus 20 in a state where the machine body is inclined, the turning position of the vertical auger 23 can be maintained without using a brake device. Further, the vertical auger can be turned with a small output motor.

  And in such a drive mechanism 30, the control means for controlling the maximum turning of the said vertical auger 23 between the bracket 35 fixed to the said connection part and the vertical auger 23 is provided. The restricting means includes a first restricting means 40 for detecting a maximum swivelable position by the detecting means and stopping the turning rotation, and a second restricting means 50 configured as a mechanical type forcibly stopping the rotation by a stopper. In general, the first restricting means 40 is used to restrict the turning of the vertical auger 23.

  As shown in FIG. 8, the first restricting means 40 is detected by contact between the limit switches 41L and 41R serving as detection bodies that detect a pair of left and right maximum turning possible positions, and the left and right limit switches 41L and 41R. The vertical cylinder 22 of the vertical auger 23 which is composed of a contact body 42 which is a body, is provided on the upper part of the bracket 35 which is the left and right limit switches 41L and 41R on the fixed side (airframe side). Is fixed to the outer periphery of the lower part.

  The left and right limit switches 41L and 41R are attached to the connecting member 24 together with the motor 31 and the worm 32 of the drive mechanism 30 by the bracket 35, and are arranged on the same circumference as the contact body 42 attached to the vertical cylinder 22. Can be contacted. The limit switch uses a contact switch in this embodiment, but a non-contact sensor such as a proximity sensor can also be used.

  Therefore, when the vertical auger 23 is turned left as described above and reaches the preset maximum possible turning position, the contact body 42 on the vertical cylinder 22 contacts the left limit switch 41L, and the left limit switch 41L is contacted. 42 is detected and the motor 31 of the drive mechanism 30 is stopped or reversely driven. Conversely, when the vertical auger 23 is turned to the right and reaches the maximum possible turning position, the right limit switch 41R detects the contact body 42 and enters the on state, and the motor 31 is stopped or reversely driven. Thus, the turning of the vertical auger 23 is restricted by the first restricting means 40.

  As described above, the first regulating means including the contact body 42 provided on the outer periphery of the vertical auger 23 and the pair of limit switches 41L and 41R provided on the bracket 35 between the vertical auger 23 and the bracket 35. 40, and when one of the limit switches 41L and 41R detects the contact body 42 when the vertical auger 23 turns, the motor 31 of the drive mechanism 30 is stopped or reversely driven to turn the vertical auger 23. Since it is configured to be regulated, the turning range of the vertical auger 23 can be limited to a predetermined turning range. Also, the left and right limit switches 41L and 41R can be attached to the connecting member 24 together with the motor 31 and the worm 32 of the drive mechanism 30 with the bracket 35, so that the first restricting means 40 can be simply configured.

  The second restricting means 50 restricts the turning range of the vertical auger 23 to the left turning side and the right turning side slightly larger than the turning range restricted by the first restricting means 40. The first restricting means 40 is an emergency stop means that acts on the vertical auger 23 to restrict turning when the first restricting means 40 does not act due to a failure of the limit switches 41L and 41R during the maximum turning.

  As shown in FIG. 9, the second restricting means 50 includes a pair of left and right contact bodies 51L and 51R, and a restriction body 52 that can contact the left and right contact bodies 51L and 51R. The contact bodies 51L and 51R are fixed on the worm wheel 33 fixed to the vertical auger 23 on the turning side, and the regulating body 52 is fixed to the rear frame 55 on the fixed side. The rear frame 55 is erected on the machine body frame 2 and is disposed in the empty space behind the vertical auger 23 so as to face the vertical auger 23.

  The regulating body 52 attached to the rear frame 55 protrudes toward the vertical cylinder 22 of the vertical auger 23, and its tip is disposed on the worm wheel 33 so that it can contact the left and right contact bodies 51L and 51R. Has been. Thus, the regulating body 52 is used as a stopper. The rear frame 55 is provided with a rotation fulcrum 11a of the rejection processing unit 11.

  Accordingly, when the vertical auger 23 is turned to the turning position where the left limit switch 41L detects the contact body 42 during the left turning of the vertical auger 23, the motor 31 of the normal drive mechanism 30 is stopped or reversely driven, and the vertical auger 23 is driven. However, even if the vertical auger 23 further turns left due to a failure of the left limit switch 41L or the like, the left contact body 51L on the worm wheel 33 immediately contacts the restriction body 52. Thus, the second restricting means 50 prevents the worm wheel 33 from over-rotating and restricts the turning of the vertical auger 23. Note that the turning of the vertical auger 23 is also restricted by the second restricting means 50 in the same manner as described above when turning right.

  In this way, a pair of abutting bodies fixed to the worm wheel 33 on the vertical auger 23 between the vertical auger 23 and the rear frame 55 erected on the body frame 2 behind the vertical auger 23. A second restricting means including 51L / 51R and a restricting body 52 fixed to the rear frame 55 is provided, and one of the abutting bodies 51L / 51R abuts on the restricting body 52 when the vertical auger turns. Thus, since the turning of the vertical auger 23 is restricted, even when the first restricting means 40 does not act on the vertical auger 23, the second restricting means 50 always acts to ensure the turning of the vertical auger 23. It becomes possible to regulate. Therefore, it is possible to prevent the vertical auger 23 from turning 360 degrees or more with respect to the connecting member 24 and to prevent a cable or the like extending from the connecting member 24 side to the vertical auger 23 side from being broken due to excessive rotation. .

  As shown in FIGS. 3 and 4, the rear frame 55 erected on the body frame 2 is disposed at the rear part of the vertical auger 23, and the upper part of the rear frame 55 and the vertical auger 23 are arranged. The upper part and the upper part of the cereal cylinder 13 connected to the upper part of the Glen tank 14 are connected by a connecting frame 61 formed in a “tsu” shape in a rear view. In this way, the rear frame 55, the vertical auger 23, and the upper portion of the whipping cylinder 13 are firmly connected by the connecting frame 61. A stay 62 is provided in the middle of the connecting frame 61, and the vertical cylinder 22 of the vertical auger 23 is rotatably supported by the stay 62. Thereby, the vertical auger 23 can be reliably held in a standing state with respect to the left-right direction and the front-rear direction and also during turning.

  Further, one end of a substantially L-shaped support frame 65 in a side view is connected and fixed to the upper portion of the cereal cylinder 13, and the auger rest 28 is supported on the other end of the support frame 65. And the control frame 66 is integrally extended toward the back from the up-and-down middle part of the vertical direction of the support frame 65, and it is supported by the support stay protruded upwards from the whipping cylinder 13 in the middle part. Thus, when the horizontal auger 27 is lowered, the horizontal auger 27 can be brought into contact with the restriction frame 66, the range of the lowering is restricted, and contact between the horizontal auger 27 and each part of the airframe is prevented.

The side view of the combine which concerns on one Example of this invention. The top view of the combine which concerns on one Example of this invention. The side view of a grain discharging apparatus. The rear view of a grain discharging apparatus. The side view of a drive mechanism. The rear view of a drive mechanism. AA arrow sectional drawing in FIG. BB arrow sectional drawing in FIG. CC sectional view taken on the line in FIG.

Explanation of symbols

2 Machine frame 13 Flouring cylinder 14 Glen tank 20 Grain discharging device 23 Vertical auger 24 Connecting member 27 Horizontal auger 30 Drive mechanism 31 Motor 32 Worm 33 Warm wheel 35 Bracket 40 Second regulating means 41L / 41R Limit switch (detecting body)
42 Contact body (detected body)
50 Second regulating means 51L / 51R Abutting body 52 Regulating body 61 Connecting frame

Claims (5)

  In a combine grain discharging apparatus comprising a vertical auger and a horizontal auger for transferring the grain in the grain tank from the discharge conveyor and discharging the grain outside the machine, the vertical auger is rotatably supported on the machine frame. A connecting member that connects the lower part and the lower part of the Glen tank is fixed to the body frame, and a vertical auger is turnably supported by the connecting member, and a driving mechanism for turning the vertical auger is provided on the connecting member. A grain discharging device for a combine, which is arranged on the side of the fuselage.   A worm wheel is attached to the outer periphery of the vertical auger, a worm and a motor for rotating the worm are supported by a bracket and attached to a bracket, and the worm and the worm wheel are engaged to constitute the drive mechanism. The combine grain discharging apparatus according to claim 1.   Between the vertical auger and the bracket, there is provided a first restricting means comprising a detected body provided on the outer periphery of the vertical auger and a pair of detecting bodies provided on the bracket, and either of them is turned when the vertical auger is turned. 3. The combine according to claim 2, wherein one of the detection bodies detects the detection object, and the motor of the drive mechanism is stopped or reversely driven to restrict the turning of the vertical auger. Grain discharging device.   A pair of abutments fixed to a worm wheel on the vertical auger and a rear frame fixed between the vertical auger and a rear frame standing on the body frame on the side of the vertical auger And a second restricting means comprising a restricting body that is configured to restrict the turning of the vertical auger by contacting one of the contact bodies with the restricting body when the vertical auger is turning. A combine grain discharging apparatus according to claim 2 or claim 3. The rear frame provided on the machine body frame and a cereal cylinder connected to the upper part of the Glen tank are connected by a connecting frame, and the vertical auger is supported in the middle of the connecting frame. The combine grain discharging apparatus according to any one of claims 1 to 4.

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