JP2018068146A - Harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester capable of supporting a harvesting and conveying part in a well-balanced manner, and performing a lifting and lowering operation of the harvesting and conveying part stably.SOLUTION: A harvester is provided with a harvesting and conveying part 5 for harvesting corn bunch bodies and conveying them backward. The harvesting and conveying part 5 is provided with a harvesting part 12 located in front of a machine body 4 across the lateral width of the machine body 4, and a conveying part 13 connected to the rear part of the harvesting part 12, which is supported by the machine body 4 so as to be vertically swingable. The harvester includes a first lifting and lowering cylinder 77 provided across the conveying part 13 and the machine body 4, and a second lifting and lowering cylinder 78 provided across the harvesting and conveying part 5, and the machine body 4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a harvester.

  A conventional harvesting machine is described in Patent Document 1, for example. The harvesting machine described in this document is provided with a harvesting conveyance unit that harvests and conveys crops backward, and the harvesting conveyance unit is located in front of the aircraft, and the harvesting unit spans the left and right widths of the aircraft, A transport unit connected to the rear part of the harvesting unit and supported by the machine body so as to swing up and down, and a cylinder for raising and lowering one harvesting transport unit are provided.

JP 2016-49094 A

  By the way, in recent years, in order to improve the harvesting efficiency, the harvesting transport unit tends to be enlarged. Since the conventional harvesting machine has only one lifting / lowering cylinder for the harvesting / conveying section, when the harvesting / conveying section is enlarged, the support balance of the harvesting / conveying section becomes unstable, There was a risk of wobbling in the harvesting transport section during operation.

  In view of the above circumstances, it has been desired to provide a harvesting machine that can support the harvesting and conveying unit in a well-balanced manner and can stably perform the lifting and lowering operation of the harvesting and conveying unit.

The harvesting machine of the present invention is
A harvesting and transporting unit that harvests and transports crops backwards is provided.
The harvesting conveyance unit includes a harvesting unit that is positioned in front of the aircraft and spans the left and right widths of the aircraft, and a conveyance unit that is connected to the rear part of the harvesting unit and supported by the aircraft so as to be swingable up and down. And
A first cylinder for raising and lowering provided between the transport unit and the machine body;
And a second cylinder for raising and lowering provided between the harvesting conveyance section and the machine body.

According to the present invention, the harvesting transport unit is formed by the first elevating cylinder provided between the transport unit and the machine body, and the second lifting cylinder provided between the harvesting transport unit and the machine body. It can be supported stably on the aircraft side. Moreover, the raising / lowering operation | movement of the harvest conveyance part with respect to a body can be stably performed by the expansion-contraction operation | movement of a 1st cylinder and a 2nd cylinder.
Therefore, if it is this invention, while being able to support a harvest conveyance part with sufficient balance, the raising / lowering operation | movement of a harvest conveyance part can be performed stably.

In the present invention,
It is preferable that the second cylinder is provided across the transport unit and the machine body.

  According to this configuration, since both the first cylinder and the second cylinder are provided across the conveyance unit and the machine body, the conveyance unit of the harvesting conveyance unit is arranged on the machine body side by both the first cylinder and the second cylinder. In addition, it is possible to stably move the transport unit up and down with respect to the machine body by both the first cylinder and the second cylinder.

In the present invention,
A support frame extending along the left-right direction is provided at the bottom of the transport unit,
It is preferable that both the first cylinder and the second cylinder are provided across the support frame and the airframe.

  According to this configuration, the harvesting conveyance unit including the conveyance unit and the lifting and lowering operation can be stably performed by the support frame supported in a balanced manner by the first cylinder and the second cylinder.

In the present invention,
The support frame protrudes laterally from the transport unit,
The first cylinder is coupled to the support frame at the bottom of the transport unit,
It is preferable that the second cylinder is connected to a protruding portion of the support frame.

  According to this configuration, since the transport unit is often provided on the left and right sides with respect to the center of the left and right sides of the machine body, the first cylinder is disposed at the bottom of the transport unit and, for example, the second cylinder Is disposed at a position protruding to the left and right other side than the transport unit, the support balance of the transport unit via the support frame by the first cylinder and the second cylinder becomes good.

In the present invention,
Protruding portions that protrude laterally from the conveying portion are provided,
The first cylinder is connected to the bottom of the transport unit,
The second cylinder is preferably connected to the protrusion.

  According to this configuration, since the transport unit is often provided on the left and right sides with respect to the center of the left and right sides of the machine body, the first cylinder is disposed at the bottom of the transport unit and, for example, the second cylinder Is disposed at a position protruding to the left and right other side than the transport unit, the support balance of the transport unit by the first cylinder and the second cylinder becomes good.

In the present invention,
It is preferable that the first cylinder supports a portion of the bottom of the transport unit that is opposite to the side where the second cylinder is located.

  According to this configuration, since the first cylinder is disposed on a portion of the bottom of the transport unit opposite to the side where the second cylinder is located, the transport unit is supported by the first cylinder and the second cylinder. The balance will be good.

In the present invention,
A front frame extending along the left-right direction is provided at the front of the aircraft,
It is preferable that the rear end portion of the first cylinder and the rear end portion of the second cylinder are supported by the front frame.

  According to this configuration, since both the first cylinder and the second cylinder are supported by the front frame located at the front part of the machine body, the load of the harvest conveyance unit transmitted from the first cylinder and the second cylinder. However, it will be transmitted in good balance to the aircraft via the front frame.

In the present invention,
The harvesting section is configured to harvest corn tufts as the crop;
The transport unit is configured to transport the harvested tufts backward,
The harvesting unit is provided with an auger that collects the harvested tufts laterally,
A case in which an entrance for receiving the tufted body conveyed from the auger is provided on the front surface in the conveyance unit, and an endless rotation type conveyance accommodated in the case and having a conveyance path on the lower side of the case An apparatus, and
It is preferable that a lower guide member for connecting a rear end portion of the bottom plate portion of the harvesting portion and a front end portion of the bottom plate portion of the case is provided.

  According to this configuration, when the tufted body is delivered from the harvesting unit to the transport unit, the tufted body transported rearward from the auger by the lower guide member is moved in the case of the transport unit by the lower guide member. Guided smoothly to the bottom. For this reason, it is possible to avoid the tuft from falling between the auger and the case. In addition, the lower guide member can guide the tufted body smoothly from the auger into the case without having to secure a large drop between the auger and the lower part of the case. it can.

In the present invention,
It is preferable that the intermediate portion in the front-rear direction of the lower guide member protrudes upward in a side view.

  According to this configuration, when the tufted body gets over the middle part in the front-rear direction, the tilt of the lower guide member rolls down naturally, and is smoothly guided to the entrance of the case of the transport unit.

In the present invention,
It is preferable that the lower guide member is provided with a first guide member on the harvesting section side and a second guide member on the case side.

  According to this configuration, since the first guide member on the harvesting section side and the second guide member on the case side can be attached and detached separately, for example, when the lower guide member is configured by one member In comparison, maintenance of the lower guide member is facilitated.

In the present invention,
The front rotating body in the transport device can be repositioned along the transport direction of the transport unit,
It is preferable that the second guide member is configured to change its position following the change of the position of the rotating body.

If the starting end of the transport path formed between the endless rotating body of the transport device and the second guide member is too wide, the scraping efficiency of the tufted body by the transport device is reduced, and if it is too narrow, the tufted body is clogged. Is likely to occur.
According to this configuration, since the position of the second guide member is changed together with the front rotating body in the transport apparatus, the tension of the endless rotating body of the transport apparatus is adjusted by changing the position of the front rotating body. Even so, the starting end of the transport path formed between the endless rotating body of the transport device and the second guide member can be maintained at a predetermined constant size.

In the present invention,
It is preferable that an upper guide member for guiding the tufted body downward is provided above the lower guide member between the harvesting section and the inlet.

  According to this configuration, even if the tuft is about to jump out of the auger, the tuft is guided by the upper guide member, falls to the lower guide member, and is smoothly transported to the transport unit.

In the present invention,
It is preferable that an elastically deformable plate-like body is provided at the rear end of the guide surface of the upper guide member.

  According to this configuration, it is possible to weaken the momentum of the tufted body that hits the upper guide member by elastic deformation of the plate-shaped body, so that the tufted body is smoothly guided to the conveyance path.

In the present invention,
The harvesting section has an opening in the rear for discharging the harvested crops;
The transport unit has an inlet connected to the opening at a front part, and is configured to transport the harvested crop backward.
The rear part of the harvesting part is provided with a first connection frame body wider than the opening in the left-right direction,
It is preferable that a second connection frame body that is wider than the inlet in the left-right direction and is connected to the first connection frame body is provided in a front portion of the transport unit.

  According to this configuration, in the left-right direction, the first connection frame body on the harvesting section side that is provided in a range including the opening of the harvesting section and wider than the opening, and includes the entrance of the transport section in the left-right direction. The second connecting frame body on the side of the conveying section that is provided in the range and wider than the inlet is connected to each other. As a result, the harvesting section is firmly connected to the transport section via the first connection frame body and the second connection frame body, so that the harvesting section is less likely to be twisted with respect to the transport section. It can be stably supported with good balance.

In the present invention,
It is preferable that a guide portion for connecting the opening and the inlet is provided within the width of the first connection frame body.

  According to this configuration, since there is a guide unit that connects the opening of the harvesting unit and the entrance of the conveyance unit, the harvested crop is unlikely to fall from between the harvesting unit and the conveyance unit toward the outside of the machine. Furthermore, since the guide part is located within the width of the first connection frame body, the guide part can be suitably protected from an obstacle approaching from the left and right outside by the first connection frame body.

In the present invention,
It is preferable that the first connection frame body is provided with left and right side walls connected to the rear portion of the harvesting section and a horizontal frame connecting the left and right side walls.

  According to this configuration, by using the first connection frame body including the left and right side walls and the horizontal frame connecting the left and right side walls, for example, the first connection frame body can be formed using only a simple structural material such as a square pipe. Compared with the case where it comprises, the intensity | strength of a 1st connection frame body can be raised.

In the present invention,
A connecting portion for connecting the first power transmission device on the transport portion side and the second power transmission device on the harvesting portion side passes through a space between the guide portion and one of the left and right side walls. It is preferable that

  According to this structure, the connection part which connects the 1st power transmission device by the side of a conveyance part, and the 2nd power transmission device by the side of a harvesting part using the space formed between a guide part and one side wall. Can be arranged compactly.

In the present invention,
A connecting portion for connecting the first power transmission device on the transport portion side and the second power transmission device on the harvesting portion side passes through a space between the guide portion and one of the left and right side walls. It is preferable that

  According to this configuration, the counter shaft is disposed in the second power transmission device on the harvesting portion side in a state of passing through one side wall, and the connecting portion and the side transmission device are interlocked and connected by the counter shaft. For example, the counter shaft can be arranged more compactly than when the counter shaft is provided without penetrating the side wall. In addition, since the one side wall is also used for supporting the counter shaft, the counter shaft can be stably supported, and the number of dedicated members for supporting the counter shaft can be reduced.

In the present invention,
It is preferable that the connecting portion is provided with a spring type torque limiter provided at an end portion of the counter shaft.

  According to this configuration, since the spring type torque limiter in the second power transmission device is provided at the end of the counter shaft, excessive torque is transmitted via the second power transmission device by the torque limiter arranged in a compact manner. Can be suppressed.

In the present invention,
The connecting portion includes an endless rotating body, and a ring body that applies tension force to the endless rotating body,
It is preferable that a spring capable of applying a biasing force to the ring body and adjusting the biasing force is provided at a position opposite to the space with respect to the one side wall.

  According to this configuration, since the spring for adjusting the tension force of the endless rotating body is provided on the opposite side of the space where the guide portion is located across the one side wall, the spring and the guide portion interfere with each other. It will not be arranged.

It is a left view which shows the whole harvesting machine. It is a top view which shows the whole harvesting machine. It is a disassembled perspective view which shows a harvest conveyance part. It is a top view which shows the principal part of the support structure of a harvest conveyance part. It is a left view which shows the principal part of the support structure of a harvest conveyance part. It is a fragmentary sectional view of the left view which shows the periphery of a harvesting part, a conveyance part, a lower guide member, an upper guide member, etc. It is a top view which shows a harvesting part, a conveyance part, a 1st connection frame body, a 2nd connection frame body, etc. It is sectional drawing of the right side view which shows a harvesting part, a conveyance part, a 1st connection frame body, a 2nd connection frame body, etc. FIG. It is a fragmentary sectional view of the left side view showing another embodiment.

  Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings. In the description, the direction of the arrow F shown in FIGS. 1 and 2 is “front”, the direction of the arrow B shown in FIGS. 1 and 2 is “rear”, the direction of the arrow L shown in FIG. The direction of the arrow R shown in FIG.

  As shown in FIGS. 1 and 2, the corn harvester (an example of “harvesting machine”) is capable of self-propelled being supported by a traveling device 3 including a pair of left and right front wheels 1 and a pair of left and right rear wheels 2. The machine body 4 and a harvesting / conveying section 5 for harvesting and conveying the corn tufts (an example of “crop”) to the rear are provided.

  As shown in FIG. 1, FIG. 2, etc., the machine body 4 has a threshing process (peeling of the foliage and graining of the grains) of the tufted body with the foliage conveyed from the harvest conveyance unit 5. The apparatus 6, the grain storage part 7 which can store the grain of the corn separated by the threshing apparatus 6, the discharge part 8 which discharges impurities such as corn foliage and the core part separated by the threshing apparatus 6, the grain The unloader 9 which can discharge | emit the grain stored in the grain storage part 7 toward the exterior, the drive part 10 etc. which a passenger | crew performs driving | running operation are provided. A vehicle body frame 11 assembled in a frame shape is provided at the lower part of the body 4. The vehicle body frame 11 is supported by the traveling device 3.

  As shown in FIGS. 1 to 8, the harvesting conveyance unit 5 is connected to the harvesting unit 12 that is located in front of the machine body 4 and spans the left and right widths of the machine body 4 and the rear part of the harvesting unit 12. And a conveyance unit 13 supported so as to be swingable.

[About the harvesting section]
The harvesting unit 12 shown in FIGS. 1 to 8 is configured to harvest a corn tuft as a crop. As shown in FIGS. 1 and 2, the harvesting unit 12 includes a divider 14 that is arranged side by side in the left-right direction. The harvesting section 12 is provided with four rows of introduction paths in the left-right direction. The harvesting unit 12 is provided with a pair of left and right harvesting rolls 15 and a pair of left and right endless transport chains 16 positioned above the harvesting rolls 15 for each introduction path.

  As shown in FIGS. 1, 2, and 4 to 8, the harvesting unit 12 is provided with an auger 17 that horizontally conveys and collects the harvested tufts. The auger 17 has a first rotating shaft 18, a cylindrical member 19 that rotates integrally with the first rotating shaft 18, and a pair of left and right spiral pressing bodies that are attached to the outer periphery of the cylindrical member 19 and press the tufted body. 20 is provided.

  As shown in FIGS. 4 to 8, the harvesting unit 12 has an opening 21 for discharging the harvested tufts at the rear. The harvesting unit 12 uses the lower side of the auger 17 as the conveyance path of the tufted body as indicated by an arrow A1 in FIG. The auger 17 rotates around the first rotation axis P1, presses the tufted body with the pressing body 20, and gathers it at the opening 21 while transporting the tufted body backward. The tufts collected by the auger 17 are sent to the transport unit 13 through the opening 21.

[About the transport unit]
The transport unit 13 shown in FIGS. 1 to 8 is configured to transport the harvested tufts backward. As shown in FIGS. 4-8, the conveyance part 13 has the inlet 22 connected with the opening 21 of the harvesting part 12 in the front part.

  As shown in FIGS. 3 to 8 and the like, the transport unit 13 is accommodated in the case 23 having a front surface provided with an inlet 22 for receiving the tufted body transported from the auger 17, and the case 23. And an endless rotation type transport device 24 having the lower side as a transport path. As shown by arrow A <b> 2 in FIG. 6, the transport device 24 uses the lower side of the case 23 as a tuft-shaped transport path.

  As shown in FIGS. 1, 5, 6, and 8, the transport device 24 includes a front rotating body 25 as a driven wheel body, a rear rotating body 26 as a driving wheel body, and a front rotating body. An endless rotating chain 27 wound around the body 25 and the rear rotating body 26, a conveying body 28 provided at a predetermined interval around the endless rotating chain 27, and the like are provided. .

  As shown in FIG. 6, the position of the front rotating body 25 in the transport device 24 can be changed along the transport direction of the transport unit 13. The solid line shown in FIG. 6 shows the case where the rotary body 25 is adjusted to the front side, and the two-dot chain line shown in FIG. 6 shows the case where the rotary body 25 is adjusted to the rear side.

  As shown in FIG. 6, a plurality of long holes 29 are provided in the side surface of the case 23 along the transport direction of the transport unit 13. The transport unit 13 includes a first mounting member 30 that supports the front rotating body 25 so as to be rotatable about a second rotation axis P <b> 2 along the left-right direction, and a second mounting fixed to the first mounting member 30. The member 31 is provided. The second rotating shaft 32 of the rotating body 25 on the front side is rotatably supported by a boss portion 33 provided on the first mounting member 30. The first attachment member 30 is fixed to the case 23 by fastening a fastening member 34 made of a bolt or the like at a predetermined position of the long hole 29 of the case 23.

[About the first connecting frame]
As shown in FIGS. 3 to 8, the rear portion of the harvesting section 12 is provided with a first connection frame body 35 that is provided in a range including the opening 21 in the left-right direction and is wider than the opening 21.

  As shown in FIGS. 3, 4, 7, and the like, the first connection frame body 35 includes a left and right side wall 36 connected to the rear portion of the harvesting unit 12, and a pair of upper and lower left and right sides that connect the left and right side walls 36. A horizontal frame 37 extending along the vertical frame 38, a vertical frame 38 extending along a pair of left and right vertical directions connecting the upper and lower horizontal frames 37, and the like are provided. Each of the left and right side walls 36 has a folded portion 39 at the top.

  As shown in FIG. 6, an inverted U-shaped guide portion 40 that connects the opening 21 and the inlet 22 is provided within the width of the first connection frame body 35. The guide part 40 is disposed between the left and right side walls 36.

[About the second connecting frame]
As shown in FIGS. 3 to 8, the front portion of the transport unit 13 is connected to the first connection frame body 35, provided in a range including the inlet 22 in the left-right direction, and wider than the inlet 22. A second connection frame body 41 is provided.

  As shown in FIG. 3 and the like, the second connecting frame body 41 includes a mounting frame 42 that extends along the left-right direction, a support frame 43 that extends along the left-right direction, and a mounting frame 42 and a support frame 43. A pair of left and right rear vertical frames 44, a second rear vertical frame 45, a pair of left and right claws 49 fixed to the front surface of the mounting frame 42, and a rear portion of the support frame 43. And an attachment member 50 to be fixed.

  As shown in FIGS. 4 to 8 and the like, the horizontal frame 37 on the first connection frame body 35 is placed on the upper surface of the mounting frame 42 so as to get over the claw portion 49 in the second connection frame body 41. Then, the horizontal frame 37 under the first connection frame body 35 is bolt-connected to the attachment member 50 of the second connection frame body 41. Thereby, the 1st connection frame body 35 and the 2nd connection frame body 41 are connected, and the harvesting part 12 and the conveyance part 13 are connected.

  As shown in FIGS. 3 to 6 and 8, a support frame 43 extending along the left-right direction is provided at the bottom of the front portion of the transport unit 13. The support frame 43 protrudes laterally from the transport unit 13. The support frame 43 is provided with a protruding portion 52 that protrudes to the side of the conveying portion 13. A front frame 53 extending in the left-right direction is provided as a part of the body frame 11 at the front portion of the body 4.

[About the lower guide member]
As shown in FIGS. 3, 6, etc., the harvesting conveyance unit 5 includes a lower guide member 55 that connects the rear end portion of the bottom plate portion 54 of the harvesting portion 12 and the front end portion of the bottom plate portion 51 of the case 23. Yes. The front-rear direction intermediate portion 56 of the lower guide member 55 protrudes upward in a curved shape in a side view. The lower guide member 55 includes a first guide member 57 on the harvesting section 12 side and a second guide member 58 on the case 23 side.

  As shown in FIGS. 3 and 6, the first guide member 57 is connected to the lower end portion of the inverted U-shaped guide portion 40. The second guide member 58 is fixed to the second mounting member 31. The first guide member 57 and the inverted U-shaped guide portion 40 constitute a cylindrical member that opens in the front-rear direction. The cylindrical member is disposed so as to be thrust between the left and right side walls 36.

  As shown in FIG. 6, the second guide member 58 is configured to change its position following the position change of the rotating body 25. Specifically, by changing the fastening position of the fastening member 34 in the long hole 29 of the case 23, the first attachment member 30, the front rotating body 25, the second attachment member 31, and the second guide member 58 with respect to the case 23. This position can be adjusted along the transport direction of the transport unit 13.

[About the upper guide member]
As shown in FIG. 6, the harvesting and conveying unit 5 has an upper guide that guides the tufted body above the lower guiding member 55 between the harvesting unit 12 and the inlet 22 of the conveying unit 13. A member 60 is provided. The upper guide member 60 is fixed to the lower surface of the upper plate body of the guide portion 40. The upper guide member 60 is connected and supported in the guide portion 40. The upper guide member 60 is provided with a rigid body 61 made of a plate member bent in a substantially L shape in a side view. At the rear end of the guide surface 62 of the upper guide member 60, for example, a plate-like body 63 made of resin and capable of elastic deformation is provided. The plate-like body 63 is bolted to a location near the lower end of the rigid body 61.

[About the first power transmission device, the second power transmission device, and the side transmission device]
As shown in FIG. 7, in a space 64 between the guide portion 40 and one of the left and right side walls 36, a first power transmission device 65 on the transport unit 13 side and a second on the harvesting unit 12 side are provided. A connecting portion 67 that connects the power transmission device 66 is passed therethrough. As can be understood from FIGS. 2 and 7, the first power transmission device 65, the second power transmission device 66, and the connecting portion 67 are arranged on the right side of the body 4.

  The power transmitted from the engine (not shown) to the first power transmission device 65 on the transport unit 13 side is transmitted to the connecting unit 67 and the second power transmission device 66, and the transmitted power is used to obtain the harvesting unit 12 side. The auger 17, harvesting roll 15, and endless transport chain 16 are driven.

  The second power transmission device 66 includes a side transmission device 68 provided on the side of the harvesting unit 12, a counter shaft 69 that passes through one side wall 36 and connects the connecting portion 67 and the side transmission device 68. , Is provided. The counter shaft 69 is supported by one side wall 36 and the side wall 70 of the harvesting section 12.

  As shown in FIGS. 7 and 8, the connecting portion 67 is provided with a spring-type torque limiter 71 provided at the end of the counter shaft 69. The connection portion 67 includes a chain-type endless rotating body 72 and a ring body 73 that applies a tension force to the endless rotating body 72.

  The connecting portion 67 is provided with a spring 74 that applies an urging force to the ring body 73 and can adjust the urging force at a position opposite to the space 64 with respect to the one side wall 36. The ring body 73 is rotatably supported by the free end portion of the relay member 75 that can swing around the pivot axis P3 along the left-right direction. One end of a spring 74 is hooked and supported between the pivot shaft P <b> 3 and the ring body 73 in the relay member 75. The other end of the spring 74 is connected to the adjustment bolt mechanism 76. The adjustment of the adjustment bolt mechanism 76 changes the spring length of the spring 74, thereby adjusting the urging force applied from the spring 74 to the ring body 73.

[About the first and second cylinders]
As shown in FIGS. 1, 3 to 6, and 8, in order to raise and lower the harvesting conveyance unit 5 with respect to the machine body 4, a hydraulic first cylinder 77 for raising and lowering and a hydraulic first for raising and lowering are provided. 2 cylinders 78 are provided. When the first cylinder 77 and the second cylinder 78 are extended, the harvesting and transporting unit 5 rises with respect to the machine body 4 around the lifting axis P4, while when the first and second cylinders 77 and 78 are contracted, the harvesting and transporting is performed. The part 5 descends with respect to the machine body 4 around the elevation axis P4.

  As shown in FIGS. 4, 5, etc., both the first cylinder 77 and the second cylinder 78 are provided across the support frame 43 and the front frame 53 of the machine body 4.

  The first cylinder 77 is provided across the transport unit 13 and the machine body 4. The first cylinder 77 is connected to the bottom of the transport unit 13. The first cylinder 77 supports a portion of the bottom of the transport unit 13 that is opposite to the side where the second cylinder 78 is located. Specifically, the first cylinder 77 is connected to the support frame 43 at the bottom of the transport unit 13.

  The front end portion of the first cylinder 77 is coupled to the support frame 43 in a state of being rotatable around the front horizontal axis P5 facing in the left-right direction via a first rear bracket 79 made of a pair of plate members. Yes. The rear end portion of the first cylinder 77 is supported by the front frame 53. In other words, the rear end portion of the first cylinder 77 is pivotable around the rear horizontal axis P6 facing in the left-right direction via the first front bracket 80 made of a pair of plate members. It is connected to the frame 53.

  As shown in FIGS. 4, 5, etc., the second cylinder 78 is provided across the harvesting conveyance unit 5 and the machine body 4. When the description is added, the second cylinder 78 is provided across the transport unit 13 and the machine body 4. The second cylinder 78 is connected to the protruding portion 52 of the support frame 43. The front end portion of the second cylinder 78 is rotatable about the front horizontal axis P5 facing in the left-right direction via the second rear bracket 81 made of a pair of plate members, and the protruding portion 52 of the support frame 43. It is connected to.

  The rear end portion of the second cylinder 78 is supported by the front frame 53. In other words, the rear end portion of the second cylinder 78 is pivotable around the rear lateral axis P6 facing in the left-right direction via the second front bracket 82 made of a pair of plate members. It is supported by the frame 53.

  As shown in FIG. 4, the left / right center C <b> 2 of the transport unit 13 is biased toward the left / right one side with respect to the left / right center C <b> 1 of the machine body 4. For this reason, the first cylinder 77 is disposed at a position deviated to the left and right side with respect to the left and right center C2 of the transport unit 13, while the second cylinder 78 is disposed on the other side of the left and right sides of the body 4 from the left and right center C1. It is placed at a biased location. Thereby, the harvesting conveyance unit 5 is supported by the first cylinder 77 and the second cylinder 78 in a well-balanced manner, and the conveyance unit 13 is unlikely to be twisted.

[Another embodiment]
Hereinafter, another embodiment in which a part of the above embodiment is changed will be described. Each of the other embodiments is the same as the above embodiment except for the matters described. A plurality of different embodiments can be combined as long as no contradiction occurs. Note that the scope of the present invention is not limited to each of the embodiments described.

(1) In the said embodiment, although the 2nd cylinder 78 illustrated what was provided over the conveyance part 13 and the body 4, it is not restricted to this. For example, the second cylinder 78 may be provided across the harvesting unit 12 and the machine body 4.

(2) In the other embodiment, the support frame 43 extending along the left-right direction is provided at the bottom of the transport unit 13, and both the first cylinder 77 and the second cylinder 78 are connected to the support frame 43, the machine body 4, and the like. However, the present invention is not limited to this. At least one of the first cylinder 77 and the second cylinder 78 may be attached to a member other than the support frame 43.

(3) In the above embodiment, the support frame 43 protrudes to the side of the transport unit 13, the first cylinder 77 is connected to the support frame 43 at the bottom of the transport unit 13, and the second cylinder 78 supports it. Although the thing connected with the protrusion part 52 of the flame | frame 43 is illustrated, it is not restricted to this. For example, the first cylinder 77 may be connected to a member other than the support frame 43. Further, for example, the second cylinder 78 may be connected to a place other than the protruding portion 52 in the support frame 43. For example, both the first cylinder 77 and the second cylinder 78 may be supported on the bottom of the transport unit 13. Further, the support frame 43 may be provided with another protrusion that protrudes on the opposite side of the protrusion 52, and the first cylinder 77 may be connected to the other protrusion.

(4) In the above embodiment, the first cylinder 77 supports the part of the bottom of the transport unit 13 that is opposite to the side where the second cylinder 78 is located. Not limited. For example, the first cylinder 77 may be supported by a portion on the same side as the side where the second cylinder 78 is located in the bottom of the transport unit 13.

(5) In the above embodiment, the front frame 53 extending in the left-right direction is provided at the front of the body 4, and the rear end of the first cylinder 77 and the rear end of the second cylinder 78 are the front frame 53. However, the present invention is not limited to this. For example, at least one of the rear end portion of the first cylinder 77 and the rear end portion of the second cylinder 78 may be supported by a member other than the front frame 53.

(6) In the above embodiment, the middle part 56 in the front-rear direction of the lower guide member 55 is illustrated as projecting upward in a curved shape in a side view, but is not limited thereto. For example, it may be a lower guide member that protrudes upward in a square shape so that the middle part in the front-rear direction has an L-shape that is reversed in a side view. Further, for example, the front and rear direction intermediate portion may be a lower guide member that is inclined obliquely downward and downward in a side view.

(7) In the above embodiment, the lower guide member 55 is exemplified by the first guide member 57 on the harvesting section 12 side and the second guide member 58 on the case 23 side. It is not limited to this. For example, the lower guide member 55 may be composed of a single member.

(8) In the above embodiment, the position of the front rotary body 25 in the transport device 24 can be changed along the transport direction of the transport section 13, and the second guide member 58 follows the position change of the rotary body 25. However, the present invention is not limited to this. For example, as shown in FIG. 9, the second guide member 158 of the lower guide member 55 may be supported by the case 23 so that the position cannot be changed. In this case, the second guide member 158 is supported separately from the front rotating body 25. In this case, as shown in FIG. 9, the position of the front rotating body 25 in the transport device 24 may not be changed along the transport direction of the transport unit 13.

(9) In the above-described embodiment, the upper guide member 60 is provided with the elastically deformable plate 63 at the rear end of the guide surface 62, but is not limited thereto. For example, such an elastically deformable plate-like body 63 may not be provided.

(10) In the above embodiment, an example in which the upper guide member 60 is provided above the lower guide member 55 between the harvesting portion 12 and the inlet 22 to guide the tufted body downward. However, it is not limited to this. For example, such an upper guide member 60 may not be provided.

(11) In the above embodiment, the bottom guide member 55 that connects the rear end portion of the bottom plate portion 54 of the harvesting portion 12 and the front end portion of the bottom plate portion 51 of the case 23 is illustrated as an example. Not limited. For example, such a lower guide member 55 may not be provided.

(12) In the above embodiment, an example in which the guide portion 40 that connects the opening 21 and the inlet 22 is provided within the width of the first connection frame body 35 is illustrated, but the present invention is not limited thereto. For example, such a guide part 40 may not be provided.

(13) In the above embodiment, the first connecting frame body 35 is provided with the left and right side walls 36 connected to the rear part of the harvesting section 12 and the horizontal frame 37 connecting the left and right side walls 36. Although illustrated, it is not limited to this. For example, the side wall 36 and the horizontal frame 37 may not be provided.

(14) In the above embodiment, the first power transmission device 65 on the transport unit 13 side and the second on the harvesting unit 12 side are provided in the space 64 between the guide unit 40 and one of the left and right side walls 36. Although the thing through which the connection part 67 which connects the power transmission device 66 is illustrated, it is not restricted to this. For example, such a connecting portion 67 may be passed through a place other than the space 64.

(15) In the above embodiment, the second power transmission device 66 penetrates the side transmission device 68 provided on the side of the harvesting unit 12 and the one side wall 36, and the connection portion 67 and the side transmission device 68. The counter shaft 69 is illustrated as being supported by the one side wall 36 and the side wall 70 of the harvesting section 12, but is not limited thereto. For example, for example, a counter shaft 69 that does not penetrate one side wall 36 may be provided.

(16) In the above embodiment, the connecting portion 67 is provided with the spring-type torque limiter 71 provided at the end of the counter shaft 69, but is not limited thereto. For example, such a torque limiter 71 may not be provided on the counter shaft 69.

(17) In the above embodiment, the connecting portion 67 is provided with the endless rotating body 72 and the ring body 73 that applies a tension force to the endless rotating body 72, and applies an urging force to the ring body 73 and an urging force. The spring 74 capable of adjusting the angle is illustrated as being provided at a position opposite to the space 64 with respect to the one side wall 36, but is not limited thereto. For example, such a spring 74 may be provided in the space 64 or may be provided at a completely different location.

(18) In the above embodiment, the first power transmission device 65, the second power transmission device 66, and the connecting portion 67 are arranged on the right side of the machine body 4. However, the present invention is not limited to this. Absent. For example, the first power transmission device 65, the second power transmission device 66, and the connecting portion 67 may be disposed on the left side of the body 4.

(19) In the above-described embodiment, the rear portion of the harvesting unit 12 is provided with the first connection frame body 35 that is provided in a range including the opening 21 in the left-right direction and wider than the opening 21. The front part is connected to the first connection frame body 35 and is provided in a range including the inlet 22 in the left-right direction, is wider than the inlet 22, and includes the second connection frame body 41. However, it is not limited to this. For example, the first connection frame body 35 and the second connection frame body 41 may not be provided.

  In addition to the corn harvester, the present invention can be used in various harvesters that harvest crops such as rice, soybeans, and buckwheat.

4: Machine body 5: Harvest transport unit 12: Harvest unit 13: Transport unit 17: Auger 21: Opening 22: Entrance 23: Case 24: Transport device 25: Front rotating body 35: First connecting frame body 36: Side wall 37: Horizontal frame 40: Guide portion 41: Second connecting frame body 43: Support frame 51: Bottom plate portion 52: Protruding portion 53: Front frame 54: Bottom plate portion 55: Lower guide member 56: Front / rear direction intermediate portion 57: First guide member 58, 158: second guide member 60: upper guide member 62: guide surface 63: plate-like body 64: space 65: first power transmission device 66: second power transmission device 67: connecting portion 68: side transmission device 69 : Counter shaft 70: Side wall 71: Torque limiter 72: Endless rotating body 73: Ring body 74: Spring 77: First cylinder 78: Second cylinder

Claims (20)

A harvesting and transporting unit that harvests and transports crops backwards is provided.
The harvesting conveyance unit includes a harvesting unit that is positioned in front of the aircraft and spans the left and right widths of the aircraft, and a conveyance unit that is connected to the rear part of the harvesting unit and supported by the aircraft so as to be swingable up and down And
A first cylinder for raising and lowering provided between the transport unit and the machine body;
A harvesting machine comprising: a second cylinder for raising and lowering provided between the harvesting conveyance unit and the machine body.   The harvesting machine according to claim 1, wherein the second cylinder is provided across the transport unit and the machine body. A support frame extending along the left-right direction is provided at the bottom of the transport unit,
The harvester according to claim 1 or 2, wherein both the first cylinder and the second cylinder are provided across the support frame and the machine body. The support frame protrudes laterally from the transport unit,
The first cylinder is coupled to the support frame at the bottom of the transport unit,
The harvester according to claim 3, wherein the second cylinder is connected to a protruding portion of the support frame. Protruding portions that protrude laterally from the conveying portion are provided,
The first cylinder is connected to the bottom of the transport unit,
The harvesting machine according to claim 1 or 2, wherein the second cylinder is connected to the protrusion.   The harvesting machine according to any one of claims 1 to 5, wherein the first cylinder supports a portion of the bottom of the transport unit that is opposite to a side where the second cylinder is located. A front frame extending along the left-right direction is provided at the front of the aircraft,
The harvesting machine according to any one of claims 1 to 6, wherein a rear end portion of the first cylinder and a rear end portion of the second cylinder are supported by the front frame. The harvesting section is configured to harvest corn tufts as the crop;
The transport unit is configured to transport the harvested tufts backward,
The harvesting unit is provided with an auger that collects the harvested tufts laterally,
A case in which an entrance for receiving the tufted body conveyed from the auger is provided on the front surface in the conveyance unit, and an endless rotation type conveyance accommodated in the case and having a conveyance path on the lower side of the case An apparatus, and
The harvester according to any one of claims 1 to 7, further comprising a lower guide member that connects a rear end portion of the bottom plate portion of the harvesting portion and a front end portion of the bottom plate portion of the case.   The harvesting machine according to claim 8, wherein an intermediate portion in the front-rear direction of the lower guide member protrudes upward in a side view.   The harvester according to claim 8 or 9, wherein the lower guide member includes a first guide member on the harvesting section side and a second guide member on the case side. The front rotating body in the transport device can be repositioned along the transport direction of the transport unit,
The harvesting machine according to claim 10, wherein the second guide member is configured to change its position following a change in position of the rotating body.   The upper guide member that guides the tufted body toward the lower side is provided above the lower guide member between the harvesting portion and the inlet. The harvesting machine described.   The harvester according to claim 12, wherein a plate-like body that is elastically deformable is provided at a rear end of the guide surface of the upper guide member. The harvesting section has an opening in the rear for discharging the harvested crops;
The transport unit has an inlet connected to the opening at a front part, and is configured to transport the harvested crop backward.
The rear part of the harvesting part is provided in a range including the opening in the left-right direction, and includes a first connection frame body wider than the opening,
A second connection frame body that is connected to the first connection frame body at a front portion of the transport section, is provided in a range including the inlet in the left-right direction, and is wider than the inlet. Item 14. The harvester according to any one of Items 1 to 13.   The harvesting machine according to claim 14, wherein a guide portion that connects the opening and the inlet is provided within a width of the first connection frame body.   The harvesting machine according to claim 15, wherein the first connection frame body includes left and right side walls connected to a rear portion of the harvesting part, and a horizontal frame connecting the left and right side walls.   A connecting portion for connecting the first power transmission device on the transport portion side and the second power transmission device on the harvesting portion side passes through a space between the guide portion and one of the left and right side walls. The harvesting machine according to claim 16. The second power transmission device includes a side transmission device provided on a side portion of the harvesting portion, and a counter shaft that penetrates the one side wall and connects the connection portion and the side transmission device. And
The harvesting machine according to claim 17, wherein the counter shaft is supported by the one side wall and the side wall of the harvesting unit.   The harvesting machine according to claim 18, wherein a spring-type torque limiter provided at an end portion of the counter shaft is provided in the connecting portion. The connecting portion includes an endless rotating body, and a ring body that applies tension force to the endless rotating body,
20. The spring according to claim 17, wherein a spring capable of applying a biasing force to the ring body and adjusting the biasing force is provided at a position opposite to the space with respect to the one side wall. Harvesting machine according to item.

Images