JP2020000081A - Crop harvester - Google Patents

Abstract

To provide a crop harvester in which the quantity of crops stomped and damaged by a travel unit before harvesting is minimized.SOLUTION: A crop harvester includes a harvesting part 3 having feeding units 11 at the right and left that lift up a crop A in a farm field by holding the crop from right and left sides and feed the crop to an oblique upper rear side, in which the front part of the harvesting part 3 is positioned ahead of the travel unit 2 seen from a side view and close to the farm field, and the harvesting part 3 is supported at the right or left part of a machine unit 1 along the cross direction so that the rear part of the harvesting part 3 is positioned upper than the travel unit 2 seen from a side view. The crop harvester also includes an entrance prevention member 78 that prevents the crop A before harvesting adjacent to the line of crop A in the farm field harvested by harvesting part 3 from enter the area in front of the travel unit 2 on the harvesting part 3 side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a crop harvester for harvesting field crops.

  Some green soybean harvesters, which are examples of crop harvesters, have a configuration as disclosed in Patent Document 1. In Patent Literature 1, the body is supported by right and left crawler type traveling devices, and the crops in the field are held from the right and left sides and lifted from the field, and the right and left crops are transported diagonally to the upper rear side. A harvesting unit having a left carrier is provided, and the harvesting unit is supported on the left side of the body along the front-rear direction.

  Thus, the aircraft is driven along the rows of crops in the field, and the crops are harvested by the harvesting unit. In plan view, the left traveling device is located behind the front part of the harvesting unit, and the crop before harvest exists adjacent to the left side of the row of crops in the field harvested by the harvesting unit. The right side of the row of crops in the field to be harvested by the harvesting unit is an area where the crop has been harvested.

JP 2000-201519 A

  According to the crop harvester of Patent Document 1, the left traveling device is located behind the front of the harvesting unit, and the crop before harvesting is adjacent to the left side of the row of crops in the field that is harvested by the harvesting unit. Therefore, the traveling device on the left travels in the vicinity of the crop before harvest along the crop before harvest. Since the harvesting unit is supported on the left part of the body along the front-rear direction, the space between the front part of the harvesting unit and the left traveling device is relatively empty.

  Due to this, during the harvesting work, there is a possibility that the crop before harvest enters the area on the front side of the left traveling device, and when the crop before harvest enters the area on the front side of the left traveling device, the left traveling device causes There is room for improvement, as crops can be crushed before harvest.

  SUMMARY OF THE INVENTION It is an object of the present invention to reduce a state in which a traveling device crushes a crop before harvesting in a crop harvester.

The crop harvester of the present invention comprises:
An airframe supported by the right and left traveling devices,
A harvesting unit having right and left conveyors for holding the crops in the field from the right and left sides and lifting the crops from the field, and transporting the lifted crops diagonally to the rear side,
The harvesting unit is arranged such that a front portion of the harvesting unit is located near a field in front of the traveling device in a side view and a rear portion of the harvesting unit is located above the traveling device in a side view. Supported on the right or left side of the fuselage along the front-rear direction,
An entry prevention member is provided for preventing a crop before harvesting adjacent to a row of crops in a field to be harvested by the harvesting unit from entering the front region of the traveling device on the harvesting unit side.

According to the present invention, during the harvesting operation, the crop before harvesting adjacent to the row of crops in the field to be harvested by the harvesting unit, even if it tries to enter the front area of the traveling device on the harvesting unit, Is prevented.
Thereby, the state in which the crop before harvesting is crushed by the traveling device can be reduced, and the harvesting performance of the crop harvester can be improved.

In the present invention,
The harvesting unit is supported by the body so as to be able to move up and down, and an elevating mechanism for operating the harvesting unit up and down is provided.
It is preferable that the entry preventing member is attached to the harvesting unit.

  The crop harvester is equipped with an elevating mechanism that supports the harvesting unit so as to be able to move up and down on the machine body, and raises and lowers the harvesting unit. Sometimes.

According to the present invention, when the harvesting unit is supported on the body so as to be able to move up and down, and an elevating mechanism for operating the harvesting unit is provided, the entry preventing member is attached to the harvesting unit. The prevention member is also raised with the harvesting unit.
Accordingly, it is possible to avoid a situation in which the entry prevention member is brought into contact with a protrusion on the field or the road surface and is damaged when the vehicle is turning on the field or traveling on the road.

In the present invention,
The entry prevention member,
A front-rear portion disposed along the front-rear direction across the front part of the harvesting unit and the traveling device on the harvesting unit side, and the front part is attached to the front part of the harvesting unit.
It is preferable that the front part has a vertical part extending upward from a rear part of the front part and having an upper part attached to the harvesting part.

According to the present invention, the harvesting unit is arranged obliquely in side view such that the front of the harvesting unit is located near the field with the front side of the traveling device and the rear of the harvesting unit is located above the traveling device. You.
The entry prevention member has a front-rear portion and a vertical portion, so that the front-rear portion of the entry prevention member has a function of preventing crops from entering the front region of the traveling device on the harvesting unit, The entry prevention member can be easily attached to the harvesting section.

In the present invention,
A pre-harvest crop, which is attached to an upper portion of the traveling device on the harvesting unit side of the aircraft and is adjacent to a row of crops in a field to be harvested by the harvesting unit, is attached to the traveling device on the harvesting unit side. It is preferable that a contact prevention member for preventing contact is provided.

According to the present invention, the pre-harvest crop adjacent to the row of crops in the field to be harvested by the harvesting unit is separated rearward from the entry prevention member with the advance of the aircraft, and then the side of the traveling unit on the harvesting unit side. Any attempt to contact the part is prevented by the contact prevention member.
As a result, the state in which the crop before harvesting is damaged due to contact with the lateral portion of the traveling measure can be reduced, and the harvesting performance of the crop harvester can be improved.

It is a left view of an edamame. It is a top view of an edamame harvester. It is a cross-sectional plan view of the vicinity of the rear part of a harvesting part, and a separation part. It is a top view of a harvesting part. It is a left side view near the harvesting part in the state where it was lowered. It is a left side view near the harvesting part of the state which performed the raising operation. It is the perspective view which looked at the vicinity of the harvesting part from diagonally rear side. FIG. 5 is a left side view of the vicinity of a transport end portion of a first transport body, a transport start end portion of a second transport body, an attitude changing unit, and a dust cover. It is a top view of the conveyance end part of a 1st conveyance body, the conveyance start end part of a 2nd conveyance body, and the vicinity of an attitude | position change part. FIG. 5 is a longitudinal rear view showing a transmission system of a first transport body and a posture changing unit. It is a schematic diagram showing a transmission system from an engine to each part. It is a top view which shows the form of a harvesting operation. It is a top view which shows the form of a harvesting operation.

FIGS. 1 to 13 show an edamame harvesting machine, which is an example of a crop harvesting machine.
1 to 13, F indicates “forward” of the body 1, B indicates “backward” of the body 1, U indicates “upward” of the body 1, and D indicates “down” of the body 1. Direction ". R indicates the “right direction” of the body 1, and L indicates the “left direction” of the body 1.

(Overall structure of green soybean harvester)
As shown in FIG. 1 and FIG. 2, the body 1 is supported by right and left crawler type traveling devices 2, and a harvesting unit 3 is provided on a left front portion of the body 1. An operation unit 4 is provided on the right side of the unit. A separation unit 5 is provided at the rear of the body 1, and a support 6 and a work deck 7 are provided at the right part of the body 1.

(Summary of harvest flow in edamame harvester)
As shown in FIGS. 1 and 2, a right and left first transport body 11 (corresponding to a transport body) that is rotationally driven around axes P1 and P2 along an oblique vertical direction is provided in the harvesting unit 3. Provided.

  As the machine body 1 advances, the crop A in the upright posture of the field is clamped from the right and left sides by the right and left first transport bodies 11 in the harvesting unit 3, and the crop is moved by the right and left first transport bodies 11. A is pulled out and lifted, and the crop A is conveyed to the rear of the harvesting unit along the direction 3 while being maintained in the upright posture.

  On the left side of the separation unit 5, a second transport body 12 that is driven to rotate around an axis in the left-right direction extends rearward from a transport end portion 11 b of the first transport body 11, and The guide rail 13 is arranged along.

  When the crop A reaches the transport end portion 11b of the first transport body 11, the crop A in the upright posture is transferred from the transport end portion 11b of the first transport body 11 to the transport start end portion 12a of the second transport body 12. The posture is changed to the side-to-side posture on the separation unit 5 side, and is transferred to the conveyance start end 12 a of the second conveyance body 12. The root A1 of the crop A in the sideways posture is held (held) between the second transport body 12 and the guide rail 13, and the crop A is transported to the rear side by the second transport body 12.

  As shown in FIGS. 1, 2, and 3, the separating unit 5 includes two pairs of upper and lower rotating members 8 and two upper and lower rotating members 9 that are driven to rotate about the horizontal axis. A collection conveyor 10 arranged along the front-rear direction on the lower side, a transport conveyor 14 arranged along the left-right direction below the rear part of the collection conveyor 10, and a predetermined interval from the rear part of the collection conveyor 10 to the rear side. A discharge conveyer 15 that is arranged open and a kara 16 that is arranged below the recovery conveyer 10 are provided.

  When the crop A in the sideways posture is transported to the rear side by the second transport body 12, the crop A first passes between the upper and lower rotating bodies 8, and the rotation of the rotating body 8 causes the crop A to be actually separated from the crop A. A2 is separated, and the separated real A2 falls onto the recovery conveyor 10.

  Next, the crop A passes between the upper and lower rotating bodies 9. The rotation of the rotating body 9 separates the real A2 from the crop A, and the separated real A2 falls onto the collection conveyor 10. The crop A from which the actual A2 has been separated is discharged from the transfer terminal portion 12b of the second transfer body 12 to the field. When the real A2 is separated from the crop A by the rotating bodies 8 and 9, debris such as leaves also fall on the collection conveyor 10.

  The collection conveyor 10 is rotationally driven toward the rear side, and the actual A2 and debris that have fallen on the collection conveyor 10 are conveyed to the rear side by the collection conveyor 10 and fall from the rear part of the collection conveyor 10 to the conveyor 14.

The transport wind of Karino 16 flows from the lower side of the recovery conveyor 10 to the rear side, passes between the recovery conveyor 10 and the discharge conveyor 15, and flows above the discharge conveyor 15 to the rear side.
When the real A2 and the refuse fall from the rear part of the recovery conveyor 10, the real A2 falls on the transport conveyor 14 against the transport wind of Karino 16. The debris is blown off by the transport wind of Karino 16 and rides on the discharge conveyor 15, and the debris on the discharge conveyor 15 is transported rearward by the discharge conveyor 15 and discharged to the field.

  The transport conveyor 14 is driven to rotate toward the support 6, and a number of collection boxes 17 are placed on the support 6. The actual A2 that has dropped onto the transport conveyor 14 is transported by the transport conveyor 14 to the support base 6 side, and is put into a collection box 17 located at the transport end of the transport conveyor 14. The auxiliary worker of the work deck 7 replaces the empty collection box 17 when the collection box 17 located at the transport end of the transport conveyor 14 becomes full.

(Form of harvesting work in the field)
As shown in FIGS. 12 and 13, in a field, crops A are planted in a number of rows L1 to L5.

  In the state described above, the aircraft 1 is advanced along the row L1 of the crop A at the end of the rows L1 to L5 of the crop A, and the crop A in the row L1 is harvested by the harvesting unit 3 (see position K1). In this case, the right side of the machine 1 is an area where the crop A has been harvested (an area where the crop A does not exist), and the left side of the machine 1 is an area where the crop A before the harvest exists.

When the harvesting of the crop A in the row L1 is completed and the machine 1 reaches the position K2, the harvesting unit 3 is moved upward to perform the turning traveling M1, and the machine 1 is moved to the position K3 in the row L2 of the crop A on the opposite side. Position. At the position K3, the harvesting unit 3 is lowered, the aircraft 1 is advanced along the row L2 of the crop A, and the harvesting unit 3 harvests the crop A in the row L2.
In this case as well, the right side of the machine 1 is an area where the harvest of the crop A is completed (the area where the crop A is not present), and the left side of the machine 1 is an area where the crop A before the harvest exists.

  When the machine 1 reaches the position K4 after the harvest of the crop A in the row L2 is completed, the harvesting unit 3 is operated to perform a turning traveling M2, and the machine 1 is moved to the position K5 in the row L3 of the crop A on the opposite side. Position. At position K5, the harvesting unit 3 is lowered, the machine body 1 is advanced along the row L3 of the crop A, and the harvesting unit 3 harvests the crop A in the row L3.

  As described above, the crop A in the row L3 is harvested, then the turning travel M1 is performed to harvest the crop A in the row L4, and then the turning travel M2 is performed to harvest the crop A in the row L5. Thus, the crop A in the field is harvested by repeating the turning traveling M1 and M2 and the harvest of the crop A of L1 to L5.

(Structure of the harvesting unit)
As shown in FIGS. 4, 5, and 7, in the harvesting unit 3, right and left linear support frames 43 are provided. The right and left frames 28 and 29 are connected to the right and left support frames 43 downward, and the support frames 30 and 44 extend along the left and right directions over the lower portions of the right and left frames 28 and 29. Are linked.

  The right and left support frames 31 are connected to the lower part of the rear part of the right and left support frames 43 downward, and the support frames 33 are connected along the left and right directions over the lower parts of the right and left support frames 31. Have been. The right and left support frames 34 are connected along the support frame 43 across the right and left portions of the support frame 30 and the right and left portions of the support frame 33. The skeleton of the harvesting unit 3 is configured as described above.

  At the front of the right and left support frames 43, right and left driven pulleys 45 are rotatably supported around an axis P1 along an oblique vertical direction. At the rear part of the right and left support frames 43, right and left drive pulleys 46 are rotatably supported around an axis P2 along an oblique vertical direction. In this case, the axis P1 and the axis P2 are parallel to each other.

  The right first transport body 11 made of a rubber belt is attached to the right driven pulley 45 and the right drive pulley 46. The left first conveyor 11 made of a rubber belt is attached to the left driven pulley 45 and the left drive pulley 46. The right and left first carriers 11 are aligned over the entire length of the support frame 43.

  A large number of rollers 47 are rotatably supported by the support frame 43, and the rollers 47 support the opposite side of the mating portion of the first transport body 11 (the portion holding the crop A). At the front of the right and left support frames 43, right and left dividers 48 and subsoilers 49 are attached.

  The right and left support frames 43 are maintained at equal intervals in the left-right direction, and are supported in an oblique posture in side view such that the front part of the support frame 43 is on the lower side and the rear part of the support frame 43 is on the upper side. A frame 43 is supported on the left front portion of the body 1 along the front-rear direction.

  In the first transport body 11, the vicinity of the driven pulley 45 is the transport start end 11a, and the vicinity of the drive pulley 46 is the transport end portion 11b. Thereby, the right and left first transport bodies 11 are linearly and obliquely upwardly rearward from the transport start end 11a to the transport end section 11b of the first transport body 11 without being twisted. Has been extended.

(Elevation structure of the harvesting section)
As shown in FIGS. 3, 7, 8, and 10, four pillars 35 are connected to the front left portion of the body 1. The right and left support frames 36 in the front-rear direction are connected over the upper part of the support 35, and the right and left support frames 37 in the left-right direction are connected over the lower part of the support 35.

  Pipe-shaped right and left swing support portions 38 are connected to the right and left support frames 36. The right and left swing support portions 38 are arranged along the support shaft center P11 in the left-right direction, and are arranged with an interval therebetween.

  As shown in FIGS. 4 and 5, a support plate 39, which is a right rear portion of the harvesting unit 3, is connected to a rear portion of the right support frame 43. The swing fulcrum 50 is connected and extends upward.

  A support plate 40, which is a left rear portion of the harvesting unit 3, is connected to a rear portion of the left support frame 43, and a cast case-shaped left swing fulcrum portion 51 is connected to an upper portion of the support plate 40. Has been extended to.

  As shown in FIGS. 4 and 5, the right and left swing fulcrum portions 50 and 51 are provided with laterally oriented bosses 50a and 51a, and as shown in FIGS. The boss portions 50a, 51a of the swing fulcrum portions 50, 51 are rotatably supported by the right and left swing support portions 38.

As a result, the harvesting unit 3 (the right and left swing fulcrum portions 50 and 51) is moved from the rear part of the harvesting unit 3 (the transport end portion 11b of the first transport body 11) by the right and left swing support portions 38. It is supported so as to be swingable up and down (movable up and down) around a support shaft center P11 in the left and right direction away from the upper side.
A passage C through which the crop A passes is provided between the right swing support portion 50 and the right swing support portion 38, and the left swing support portion 51 and the left swing support portion 38.

  As shown in FIGS. 5 and 7, in the harvesting unit 3, a bracket 30 a is connected to the left and right central portions of the support frame 30, and a hydraulic cylinder extends between the front portion of the body 1 and the bracket 30 a of the support frame 30. 41 (corresponding to a lifting mechanism) is connected.

  As shown in FIG. 6, when the hydraulic cylinder 41 is extended, the harvesting unit 3 can be moved upward, and as shown in FIG. 5, when the hydraulic cylinder 41 is contracted, the harvesting unit 3 can be moved downward. be able to.

(Configuration of load support)
As shown in FIGS. 5, 6, and 7, the load support portion 72 is connected to the lower portion of the rear of the harvesting unit 3 (the swing fulcrum portions 50 and 51) and the harvesting unit 3 in the body 1. ing. In the load support section 72, a first support member 73 and a second support member 74 are provided.

  The first support member 73 is provided with two sets of right and left sides, and is supported so as to be able to swing up and down around a left-right axis P3 at the front of the body 1 and extends forward. Frames 75 extending in the left-right direction are connected to each other at a plurality of locations on the right and left first support members 73.

  The second support member 74 has a rectangular flat plate shape in a front view, and a lower portion of the second support member 74 is swingably supported around a left-right axis P4 at a front portion of the first support member 73. ing. The upper portion of the second support member 74 is swingably connected to the right and left frames 29 of the harvesting unit 3 around the left-right axis P5.

  As described in the above (elevating structure of the harvesting unit), when the harvesting unit 3 is moved up and down, in the load support unit 72, the first support member 73 and the second support member 74 include the shaft cores P3, P4, and P5. By swinging around, the raising / lowering operation of the harvesting unit 3 is allowed.

  When a load in the left-right direction is applied to the harvesting unit 3, the load applied to the harvesting unit 3 in the left-right direction is supported by the load support unit 72, and the load applied to the harvesting unit 3 in the left-right direction is changed by the swing of the harvesting unit 3. It is possible to avoid a state where the fulcrum portions 50 and 51 and the swing support portion 38 are hung.

(Configuration of power transmission system to harvesting unit)
As shown in FIGS. 2 and 11, an engine 18 is supported at a lower portion of the driving unit 4. The power of the engine 18 is transmitted from the transmission belt 27 to the drive mechanism 32 of the second transport body 12, the rotating bodies 8, 9 of the separation unit 5, the recovery conveyor 10, the transport conveyor 14, the discharge conveyor 15, and the kara 16. .

  A transmission case 19 is supported at the left and right center of the front of the body 1, and a hydrostatic continuously variable transmission 20 is connected to the transmission case 19. The power of the engine 18 is transmitted to the input shaft of the continuously variable transmission 20 via the transmission belt 21, and the power of the continuously variable transmission 20 is transmitted to the auxiliary transmission (not shown) and the like inside the transmission case 19. Via the driving device 2.

The power of the continuously variable transmission 20 is transmitted to the transmission shaft 26 via the gear transmission mechanism 22, the transmission belt 23, the transmission shaft 24, and the transmission belt 25.
As shown in FIGS. 7, 8, and 10, right and left support frames 42 are connected to the lower portion of the support 35 along the front-rear direction, and the transmission shaft 26 is connected to the right and left support frames 42 in the left-right direction. It is supported along.

  As shown in FIGS. 3, 10, and 11, a drive shaft 52 is supported by the swing fulcrum portions 50 and 51 along the axis P2, and a drive pulley 46 is connected to a lower portion of the drive shaft 52. At the pivot points 50 and 51, the transmission shaft 53 is supported laterally at the position of the support shaft center P11, and the bevel gear 52a of the drive shaft 52 and the bevel gear 53a of the transmission shaft 53 are engaged. A transmission belt 54 is attached across the pulley 26a of the transmission shaft 26 and the pulley 53b of the transmission shaft 53.

  With the above-described configuration, the power of the transmission shaft 26 is transmitted to the drive shaft 52 via the transmission belt 54 and the transmission shaft 53, and the right drive shaft 52 (the right drive pulley 46) is rotationally driven, so that the right drive shaft 52 is rotated. The first carrier 11 is driven to rotate counterclockwise in FIGS. 2 and 3. The left drive shaft 52 (the left drive pulley 46) is rotationally driven, and the left first transport body 11 is rotationally driven clockwise in FIGS.

(Configuration of entry prevention member)
As shown in FIGS. 1, 2, 5, and 7, an entry preventing member 78 is attached to the harvesting unit 3. The entry preventing member 78 is formed in a round bar shape, and includes a front-back portion 78a and a vertical portion 78b.

  The front portion of the front-rearward portion 78a of the entry preventing member 78 is attached to the left frame 28, which is the front portion of the harvesting portion 3, and the front-rearward portion 78a of the penetration preventing member 78 is located at the front of the harvesting portion 3. It is arranged along the front-rear direction over the left part and the vicinity of the front part of the left traveling device 2 on the harvesting part 3 side.

  The vertical portion 78b of the entry preventing member 78 extends upward from the rear portion of the front / rearward portion 78a of the entry preventing member 78, and the upper part of the vertical portion 78b of the entry preventing member 78 is It is attached to the left part of a certain support frame 33.

  The entry prevention member 78 (the front-back portion 78a and the up-down portion 78b) is located outside (left side) of the load support portion 72 (the first support member 73 and the second support member 74) in plan view, and the load is viewed in side view. It is in a state of intersecting with the support portion 72 (the first support member 73 and the second support member 74).

(Configuration of contact prevention member)
As shown in FIGS. 1, 2, 5, and 7, a contact prevention member 79 is provided on the front and rear portions of the left side of the body 1 (corresponding to the upper part of the traveling device 2 on the harvesting unit 3 side of the body 1). , 80 are attached.

  The front contact prevention member 79 is formed in a round bar shape, and the front part of the front contact prevention member 79 is connected to the front part of the left lateral part of the body 1. The front part of the front contact prevention member 79 is located inside (to the right of) the vertical portion 78b of the entry prevention member 78, and the front contact prevention member 79 extends diagonally to the left rear side. Have been. The rear part of the front contact prevention member 79 is located outside (left side) of the vertical portion 78b of the entry prevention member 78 in plan view.

The rear contact preventing member 80 is formed in a rectangular frame shape in a plan view, and is connected to a rear portion of a left lateral portion of the body 1, and a worker stands on the rear contact preventing member 80. Can be.
The rear contact preventing member 80 projects outward (left side) from the vertical portion 78b of the entry preventing member 78 in a plan view, and the rear part of the front contact preventing member 79 becomes the front part of the rear contact preventing member 80. It is connected to the.

(Functions of entry prevention member and contact prevention member)
As described above (the form of the harvesting operation in the field), as shown in FIGS. 12 and 13, the machine body 1 is advanced along the rows L1 to L5 of the crop A, and the crop A in the rows L1 to L5 is Is harvested, the right side of the machine 1 is an area where the crop A has been harvested (area where the crop A is not present), and the left side of the machine 1 is an area where the crop A before harvest exists.

  Taking the row L1 of the crop A as an example, as shown in FIG. 13, the left traveling device 2 is located behind the front part of the harvesting unit 3 in plan view, On the left side of the row L1, a row L3 of the crop A before harvest exists adjacent to the row L1, and the traveling device 2 on the left moves the vicinity of the row L3 of the crop A before harvest to the row of the crop A before harvest. The vehicle travels along the line L3.

  As shown in FIGS. 1 and 5, in a state where the harvesting unit 3 is moved down to the position where the front of the harvesting unit 3 contacts the field, the front of the harvesting unit 3 is located on the front side of the left traveling device 2 in side view. And the harvesting unit 3 is supported on the left side of the machine body 1 along the front-rear direction so that the rear part of the harvesting unit 3 is located above the left traveling device 2 in side view. State.

  In the above state, the crop A (row L3) before harvesting enters the front area of the left traveling device 2 (the region between the front of the harvesting unit 3 and the front of the left traveling device 2). Also, the crop A (row L3) before harvesting is stopped by the entry prevention member 78 (front-back portion 78a), and the crop A (row L3) before harvesting enters the front region of the left traveling device 2 in the crop A (row L3). Is prevented.

  Next, the crop A (row L3) before harvesting reaches the lateral side of the left traveling device 2 when passing through the area in front of the left traveling device 2. Even if the crop A (row L3) before harvest attempts to contact the left traveling device 2, the crop A (row L3) before harvest is stopped by the front and rear contact preventing members 79 and 80, and the crop before harvest is obtained. A (row L3) is prevented from contacting the left traveling device 2.

(Configuration of the second carrier)
As shown in FIGS. 1, 2, and 3, a driving mechanism 32 is supported on the left side of the body 1, and the driving mechanism 32 is provided with a driving sprocket 32a that is driven to rotate around a left-right axis. Rotating wheels 55 and 56 are rotatably supported around the left-right axis at the left front portion of the body 1, and a rotating wheel 57 rotates around the left-right axis at the left rear portion of the body 1. It is freely supported.

  The second transport body 12 is attached to the drive sprocket 32 a of the drive mechanism 32 and the rotating wheels 55, 56, 57. The second transport body 12 is a metal chain, and is provided with a triangular convex portion as viewed from the side toward the outside. The second carrier 12 is driven to rotate clockwise in FIG. 1 by the drive sprocket 32a of the drive mechanism 32.

  The second transport body 12 extends rearward from the transport terminating end 11b of the first transport body 11, is disposed on the left side of the body 1 along the front-rear direction, and is located on the right side of the second transport body 12. A separation unit 5 is provided. In the second transport body 12, a portion between the rotary wheel 55 and the rotary wheel 56 is a transport start end portion 12a, and a portion near the rotary wheel 57 is a transport end portion 12b.

As shown in FIGS. 1 and 8, the front part (portion of the rotary wheel 55) of the transport start end 12 a of the second transport body 12 is connected to the rear portion (portion of the rotary wheel 56) of the second transport body 12. The transfer start end 12a of the second transfer body 12 is disposed in a position obliquely upward along the transfer end 11b of the first transfer body 11 at a position lower than the position (portion).
A portion extending from a rear portion (portion of the rotating wheel 56) of the transport start end portion 12a of the second transport body 12 to a transport end portion 12b is arranged in a substantially horizontal posture in a side view.

(Configuration of guide rail)
As shown in FIGS. 1 and 8, a support frame 58 is supported on the upper left portion of the body 1 along the front-rear direction, and a large number of support rods 59 are supported on the support frame 58 so as to be vertically movable. ing.

  In the guide rail 13, short channel-shaped members are arranged in a line along the front-rear direction with the open side facing downward, and adjacent front-rear channel-shaped members are connected to each other by pins so as to bend vertically. .

  A guide rail 13 extends rearward along the upper side of the second transport body 12. The above-mentioned pin for connecting the channel-shaped member of the guide rail 13 is supported below the support rod 59, and the guide rail 13 (channel-shaped member) is supported to be vertically movable. A spring 60 for urging the support rod 59 downward is provided, and the guide rail 13 is pressed against the second transport body 12.

  In the guide rail 13, the leading channel-shaped member on the side of the transport start end 12a of the second transport body 12 is the transport start end 13a. The transport start end 13a of the guide rail 13 is located slightly behind the rear portion (the portion of the rotating wheel 56) of the transport start end 12a of the second transport body 12.

  With the above configuration, as described later (the state of the crop at the transfer portion from the transport end portion of the first transport body to the transport start end portion of the second transport portion), the root A1 of the crop A is transferred to the second transport portion. When being sandwiched between the body 12 and the guide rail 13, the guide rail 13 is lifted upward so as to be bent by the stock A1 of the crop A. The root A1 of the crop A is held between the guide rail 13 and the guide rail 13 with a sufficient holding force.

  A guide member 61 made of a round bar is attached to the conveyance start end 13 a of the guide rail 13. The guide member 61 extends forward along the second transport body 12, and extends obliquely upward in a side view from a rear portion (a portion of the rotating wheel 56) of the transport start end 12 a of the second transport body 12. Has been extended to. Since the guide member 61 is attached to the transfer start end 13a of the guide rail 13, the guide member 61 moves up and down integrally with the transfer start end 13a of the guide rail 13.

(Position relationship between the first carrier, the second carrier and the guide rail)
As shown in FIG. 1, in a state where the harvesting unit 3 is lowered to a position where the front part of the harvesting unit 3 contacts the field, the harvesting unit 3 is viewed from the side (the transport start end 11 a of the first transport body 11) in a side view. ) Is low, and the rear portion (transport end portion 11b of the first transport body 11) is disposed in a high oblique posture.

  In this state, as shown in FIGS. 8 and 9, the transfer end portion 11b of the first transfer member 11 and the transfer start end portion 12a of the second transfer member 12 are arranged so as to overlap in plan view, and The transport start end portion 12a of the transport body 12 is disposed at a position below the transport end portion 11b of the first transport body 11 in a side view.

  A virtual line B1 extending along the transport direction of the first transport body 11 from a portion of the right and left first transport bodies 11 that face each other and contacts the second transport body 12 (transport) in plan view. The second transport body 12 is arranged such that the left and right central portions 12c of the start end portion 12a) are displaced to positions closer to the separation section 5 (right side).

  A rear portion (portion of the rotating wheel 56) of the transport start end portion 12a of the second transport body 12 is disposed at a position behind the transport end portion 11b of the first transport body 11 in a side view. The transport start end 13a of the guide member 61 and the guide rail 13 is disposed at a position on the rear side of the transport end portion 11b of the first transport body 11 in a side view.

  The transport end portion 11b of the first transport body 11 is in a state of entering between the front end of the guide member 61 and the transport start end 12a of the second transport body 12 in a side view, and the front end of the guide member 61 is provided. Are disposed at a position above the transfer end portion 11b of the first transfer body 11 in side view.

  As described above, in a state where the harvesting unit 3 is moved down to the position where the front part of the harvesting unit 3 is in contact with the field, the transport end portion 11b of the first transport body 11 and the transport start end 12a of the second transport body 12 Is set to an appropriate position.

  In the above-described state, when the harvesting unit 3 is lifted, the harvesting unit 3 swings upward around the support shaft center P11 distant upward from the rear of the harvesting unit 3, so that the rear part of the harvesting unit 3 (first The transport end of the transport body) is separated from the transport start end 12a of the second transport body 12 to the front side.

  When the harvesting unit 3 is lowered, the harvesting unit 3 swings downward around the support shaft center P11 that is separated upward from the rear of the harvesting unit 3, so that the rear of the harvesting unit 3 (the first transport body 11). The transport end 11b) moves rearward and approaches the transport start end 12a of the second transport 12, and the transport end 11b of the first transport 11 and the transport start 12a of the second transport 12 are moved. Returning to the appropriate positional relationship shown in FIG.

(Configuration of the posture changing unit)
As shown in FIGS. 1 and 2, an attitude changing unit 62 is connected to an upper portion of the transport terminating portion 11 b (the swing fulcrum portion 51) of the first transport body 11.

As shown in FIGS. 8 and 9, the posture changing unit 62 includes a guide unit 63, an endless rotating body 64, and a claw body 65.
The guide section 63 is provided in two sets, an upper side and a lower side. The guide section 63 has a flat surface from the transport end portion 11b (the swing fulcrum portion 51) of the first transport body 11 toward the transport start end portion 12a of the second transport body 12. It is arranged obliquely on the side (right side) closer to the separation unit 5 when viewed. In the guide portion 63, a side portion on the side (right side) close to the separation portion 5 becomes the guide portion 63a.

  As shown in FIGS. 9, 10, and 11, the transmission shaft 66 is rotatably supported at the position of the shaft center P2 in the guide portion 63, and the drive shaft 52 is extended upward at the swing fulcrum portion 51 so that the drive shaft is driven. The shaft 52 and the transmission shaft 66 are connected via a connecting member 67.

  A driving sprocket 68 is rotatably supported between the upper and lower guide portions 63, and a transmission chain 69 is attached between the sprocket 66 a of the transmission shaft 66 and the driving sprocket 68.

  A driven sprocket 70 is rotatably supported between the upper and lower guide portions 63, and a driven sprocket 71 is fitted on the transmission shaft 66 so as to be relatively rotatable. Between the upper and lower guide portions 63, a chain-shaped endless rotating body 64 is attached across the driving sprocket 68 and the driven sprockets 70 and 71.

  Thereby, the power of the drive shaft 52 is transmitted to the drive sprocket 68 via the transmission shaft 66 and the transmission chain 69, the drive sprocket 68 is driven to rotate, and the endless rotating body 64 is driven to rotate clockwise in FIG. You.

  The claw bodies 65 are attached to the endless rotating body 64 at predetermined intervals along the moving direction of the endless rotating body 64. The claw body 65 is attached to the endless rotating body 64 so as to be able to freely change its posture to a working posture that protrudes outward from the endless rotating body 64 and a non-working posture that falls down along the endless rotating body 64.

When the claw body 65 is driven to rotate clockwise in FIG. 9 integrally with the endless rotating body 64, when the claw body 65 reaches the driving sprocket 68, the claw body 65 is operated to the non-operating position and is driven by the driving sprocket 68. The sprocket 70 is operated to the working posture from a little past.
When the pawl body 65 is slightly moved past the driven sprocket 70 to the operating position, it moves from the driven sprocket 71 to the driving sprocket 68 while maintaining the operating position, and is operated to the non-operating position when it reaches the driving sprocket 68. .

(Position relationship between the attitude changing unit, the first transporter, the second transporter, and the guide rail)
As shown in FIG. 1, in a state where the harvesting unit 3 is moved down to a position where the front part of the harvesting unit 3 is in contact with the field, as shown in FIGS. 8 and 9, the posture changing unit 62 From a position above the transfer end portion 11b (the swing fulcrum portion 51) of the first transfer body 11 and a position away from the transfer end portion 11b (the swing fulcrum portion 51) of the first transfer body 11 to the rear side. Are located.

  In this state, the posture changing unit 62 is disposed obliquely upward in a side view from a position above the transfer end portion 11b (oscillation fulcrum portion 51) of the first transfer body 11, and the second transfer unit in a plan view. It overlaps with the transport start end 12a of the body 12 and the guide rail 13 (support frame 58).

  In the posture changing unit 62, the guide part 63 a of the guide part 63 is inclined from the conveyance end part 11 b (oscillation fulcrum part 51) of the first conveyance body 11 toward the conveyance start end part 12 a of the second conveyance body 12 in plan view. And is arranged to be inclined toward the side (right side) close to the separating portion 5.

  In the posture changing section 62, the endless rotating body 64 is driven to rotate around the axis along the vertical direction, and along the guide section 63a of the guide section 63, the transport end section 11b (the swing fulcrum) of the first transport body 11. The position of the drive sprocket 68 is moved from the section 51) to the transfer start end 12a of the second transfer body 12.

  As described above, in a state where the harvesting unit 3 is moved down to the position where the front part of the harvesting unit 3 is in contact with the field, the posture changing unit 62, the transport starting end 12a of the second transporting body 12, and the guide rail 13 (support The positional relationship with the frame 58) is set to an appropriate one.

  In the above-described state, when the harvesting unit 3 is lifted, the harvesting unit 3 swings upward around the support shaft center P11 separated upward from the rear of the harvesting unit 3, so that the posture changing unit 62 is moved rearward. It moves obliquely downward and is positioned above the support frame 58 along the support frame 58.

  When the harvesting unit 3 is lowered, the harvesting unit 3 swings downward around the support axis P11 that is separated upward from the rear of the harvesting unit 3, and the posture changing unit 62 moves obliquely upward on the front side. Thus, the posture changing unit 62, the transport start end 12a of the second transport body 12, and the guide rail 13 (the support frame 58) return to the proper positional relationship shown in FIG.

(Structure of stock support, stock guide, stem guide, upper guide, rear guide, and dust cover)
As shown in FIG. 3 and FIG. 8, the root A1 of the crop A is positioned from the lower side at a position (left side) far from the separation unit 5 in plan view with respect to the transport start end 12a of the second transporter 12. A flat base support portion 76 that receives and guides the rear side is arranged. The stock base support portion 76 extends obliquely downward and forward from the rear portion (portion of the rotating wheel 56) of the transport start end portion 12a of the second transport body 12 along the transport start end portion 12a of the second transport body 12. ing.

  As shown in FIG. 1 and FIG. 8, a round bar-shaped stock guide unit is formed along the side (left side) of the second transport body 12 at the transport start end 12 a, which is farther from the separation unit 5 (left side) of the second transport body 12. 77 are arranged. The stock guide unit 77 prevents the stock A1 of the crop A from separating from the transfer start end 12a of the second transfer body 12.

  As shown in FIGS. 8 and 9, a round bar-shaped stem guide portion 81 is provided at a position between the transport end portion 11 b of the first transport body 11 and the posture changing portion 62 in a side view. The stalk guide 81 guides the stalk of the crop A to the transport start end 12a side (right side) of the second transport body 12.

  At a position above the posture changing unit 62 in a side view, a flat upper guide unit 82 that guides the upper part of the crop A to the transport start end 12a side of the second transport body 12 is provided.

  A rear guide 83 is connected to the front end of the support frame 58. The rear guide portion 83 is formed in a flat plate shape, and is set in an oblique posture so as to face the transport end portion 11b side (left side) of the left first transport body 11 in plan view.

  A dust cover 84 is attached to the body 1 so as to be located on the right side of the attitude changing unit 62. The dust cover 84 is formed in a box shape by a plate material, and an opening 84 a is opened in a left portion (a portion on the side of the posture changing unit 62) of the dust cover 84.

(Crop condition at the transfer section from the transport end of the first transport to the transport start of the second transport)
At the transfer portion from the transport end portion 11b of the first transport body 11 to the transport start end portion 12a of the second transport body 12, the crop A in the upright attitude is changed to the sideways-down attitude. The stock source A1 of the crop A whose posture has been changed to the side-down posture from the conveyance end portion 11b is sandwiched between the second conveyance body 12 and the guide rail 13.
The flow of the crop A in the above-described state will be described as follows.

  As shown in FIGS. 1 and 2, in the harvesting unit 3, when the aircraft 1 is advanced in a state where the divider 48 is in contact with the field and the subsoiler 49 is in the field, the crop A in the field is divided by the divider 48. While the field is collapsed by the subsoiler 49, the crop A in the standing posture of the field enters the transport start end 11a of the right and left first transport bodies 11.

  The crop A in the upright posture of the field is pinched from the right and left sides by the right and left first transport bodies 11, the crop A is pulled out and lifted by the right and left first transport bodies 11, and the crop A stands up. While being kept in the posture, it is conveyed to the harvesting section along the 3 diagonally upper rear side.

  As shown in FIGS. 3, 8 and 9, when the crop A in the upright position reaches the transport end portion 11 b of the first transport body 11, the stock A1 of the crop A is received by the stock support 76 from below. The stock source A1 of the crop A enters between the transport start end 12a of the second transport body 12 and the stock guide unit 77, and is guided to the transport start end 12a of the second transport body 12.

  Next, in a state where the crop A is sandwiched by the right and left first transport bodies 11, the stock A1 of the crop A is moved between the transport start end 12a of the second transport body 12 and the stock guide section 77. The crop A is brought into contact with the transport start end 12a of the second transport body 12, and the root A1 of the crop A is received by the root support 76 from below.

In a state where the crop A is sandwiched between the right and left first transport bodies 11, the stem of the crop A comes into contact with the stem guide section 81, and the transport start end 12a side of the second transport body 12 (right side). Will be guided to.
Due to the rotation of the claw body 65 (endless rotating body 64) of the posture changing unit 62, the upper part of the crop A enters between the claw bodies 65, and the upper guide part 82 contacts the upper part of the crop A.

As a result, the crop A is transported to the rear side (the second transport body 12 side) by the right and left first transport bodies 11, and the stock A1 of the crop A is transported by the transport start end 12 a of the second transport body 12. And the root A1 of the crop A is slightly inclined.
At the transport end portion 11b of the first transport body 11, a path C (right swing support portion 50) between the right swing support portion 38, the left swing support portion 51, and the left swing support portion 38 ( 7 and 10), the crop A passes.

  When the claw body 65 (endless rotating body 64) of the posture changing unit 62 is driven to rotate, the upper part of the crop A is transported by the claw body 65 along the guide portion 63a of the guide unit 63 to the first transport body 11. Pushing operation is performed from the end portion 11b toward the transport start end portion 12a of the second transport body 12.

  The guide portion 63a and the claw body 65 of the guide portion 63 of the posture changing portion 62 are configured to transfer the crop A from the transport end portion 11b of the first transport body 11 to the portion of the crop A where the actual A2 is attached. The posture is changed to a side-down posture closer to the separation unit 5 (right side) with respect to A1. The upper guide portion 82 assists in changing the posture of the crop A to the above-described sideways posture.

  Next, the stock root A1 of the crop A whose posture has been changed to the side-down posture by the posture changing unit 62 away from the conveyance end portion 11b of the first conveyance body 11 to the rear side, is transferred to the conveyance start end of the second conveyance body 12. The second carrier 12 is sandwiched between the base member 12a and the stock guide unit 77, and is placed on the transport start end 12a of the second transport body 12.

  At the same time, the upper part of the crop A enters the opening 84a of the dustproof cover 84 so as to fall down, and the upper part of the crop A is guided by the rear guide 83 toward the opening 84a of the dustproof cover 84.

  Next, the stock A1 of the crop A in the sideways posture is guided by the guide member 61 between the second transport body 12 and the transport start end 13a of the guide rail 13, and the second transport body 12 and the guide rail 13 The crop A is transported rearward by the second transport body 12 and the guide rail 13 in a sideways-down posture.

(Another embodiment of the invention)
A harvesting unit 3 (first transport body 11), a second transport body 12, and a guide rail 13 may be provided at the right front part of the body 1.
According to this configuration, the separation unit 5 is provided on the left side of the second transport body 12 and the guide rail 13. A hydraulic cylinder 41 and a load support section 72 are provided on the right front portion of the body 1.
An entry prevention member 78 is attached to the right portion of the harvesting unit 3, and contact prevention members 79 and 80 are attached to the front and rear portions of the right side of the body 1.

  The entry preventing member 78 may be attached to the body 1 instead of the harvesting unit 3. According to this configuration, when the harvesting unit 3 is raised, the entry preventing member 78 remains near the position shown in FIG.

  In the posture changing unit 62, the endless rotating body 64 and the claw body 65 may be eliminated, and the posture changing unit 62 may be configured by the guide unit 63.

  Instead of the crawler-type traveling device 2, the traveling device 2 may include a number of traveling wheels (not shown).

  The present invention can be applied not only to a soybean harvester but also to a crop harvester that harvests a crop A such as soybeans. Instead of extracting the crop A in the field, the vicinity of the root A1 of the crop A in the field is removed. The present invention can also be applied to a crop harvester that cuts a crop A and harvests the crop A while leaving the root in the field.

DESCRIPTION OF SYMBOLS 1 Body 2 Traveling device 3 Harvesting part 11 1st conveyance body (conveyance body)
41 Hydraulic cylinder (elevating mechanism)
78 entry prevention member 78a front-rear portion of entry prevention member 78b vertical portion of entry prevention member 79 contact prevention member 80 contact prevention member A crop

Claims (4)

An airframe supported by the right and left traveling devices,
A harvesting unit having right and left conveyors for holding the crops in the field from the right and left sides and lifting the crops from the field, and transporting the lifted crops diagonally to the rear side,
The harvesting unit is arranged such that a front portion of the harvesting unit is located near a field in front of the traveling device in a side view and a rear portion of the harvesting unit is located above the traveling device in a side view. Supported on the right or left side of the fuselage along the front-rear direction,
A crop harvester provided with an entry prevention member for preventing a pre-harvest crop adjacent to a row of crops in a field to be harvested by the harvesting section from entering a front region of the traveling device on the harvesting section side; . The harvesting unit is supported by the body so as to be able to move up and down, and an elevating mechanism for operating the harvesting unit up and down is provided.
The crop harvester according to claim 1, wherein the entry preventing member is attached to the harvesting unit. The entry prevention member,
A front-rear portion disposed along the front-rear direction across the front part of the harvesting unit and the traveling device on the harvesting unit side, and the front part is attached to the front part of the harvesting unit.
3. The crop harvester according to claim 1, further comprising a vertical portion extending upward from a rear portion of the front-rearward portion and having an upper portion attached to the harvester. 4. A pre-harvest crop, which is attached to an upper portion of the traveling device on the harvesting unit side of the aircraft and is adjacent to a row of crops in a field to be harvested by the harvesting unit, is attached to the traveling device on the harvesting unit side. The crop harvester according to any one of claims 1 to 3, further comprising a contact prevention member for preventing contact.

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