JPH07264922A - Device for controlling longitudinal movement of reaping part for combine - Google Patents

Abstract

PURPOSE:To effectively adjust the longitudinal movement of a reaping part, by effectively reaping grain culm at an ordinary reaping height even in retreat of the reaping part and retreating the reaping part in a stable attitude during rotation or traveling on a road. CONSTITUTION:A transmission case 3 rotatable in the longitudinal direction of a machine body around the center of a shaft 2 of an input pulley 1 as a rotation support O is installed ahead a threshing part A. An output part 4 is laid at the upper part of the transmission case 3 and the rear end side of a reaping transmission case 5 which is extended to the rear upper part of a reaping part B and is used for both support and transmission is connected to the upper side of the transmission case 3 so that the rear end side of the reaping transmission case can be revolved around an output shaft 4 as a center to adjust the longitudinal movement of the reapoing part B by rotation by the transmission case 3 in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester longitudinal movement adjusting device for retracting a harvester to shorten the length of the machine body in the front-rear direction.

[0002]

2. Description of the Related Art Conventionally, as seen in Japanese Utility Model Laid-Open No. 62-27430, a combine section is provided with a reaper 4 which can be raised and lowered around a horizontal support shaft 5 above the horizontal support shaft 5. It is configured to be retracted and housed on the machine side by lifting movement, or as seen in Japanese Utility Model Laid-Open No. 56-64238.
FIG. 2 shows that the combine harvester can be retracted by x lengths, and it is known to retract the reaper to shorten the overall length of the fuselage in the front-rear direction.

[0003]

However, in the case of both the prior arts, the structure is such that the combine work cannot be performed at the normal cutting height after the backward movement. For example, when cutting the shore, When the mowing part is moved backward so as to improve the turning property, the mowing work cannot be performed at a normal mowing height, and in the structure shown in the above-mentioned Japanese Utility Model Laid-Open No. 62-27430, when the mowing part is moved backward. If the mowing part is tilted forward and there is unevenness in the field or road surface, the front part of the mowing part may rush into the ground, which is dangerous.
In the structure shown in Japanese Patent Publication No. 6-64238, when the machine is retracted, the machine becomes higher and the center of gravity of the machine body becomes higher, and there is a risk that the machine may become overturned and become unstable. ing.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a solution to such a problem and enables it to be preferably carried out. Therefore, in front of the threshing portion, the shaft center of the input pulley is used as a rotation fulcrum. A transmission case that can rotate in the front-rear direction of the machine body is installed, an output shaft is installed above the transmission case, and the rear end side of the cutting and transmission case for support and transmission that extends to the upper rear of the mowing section is output. The cutting unit is connected to the upper side of the transmission case so as to be able to rotate about the axis, and the cutting unit can be adjusted to move back and forth by rotating the transmission case in the front-rear direction.

[0005]

Therefore, when the transmission case is rotated toward the front side of the machine body about the fulcrum and the rear end side of the cutting transmission case is rotated with respect to the transmission case to lower the cutting section, the cutting section is moved forward of the machine body. It will be possible to move to the side and perform normal mowing work, and it will be possible to raise the mowing part from that state, and when turning the aircraft in the field or traveling on the road, raise the mowing part and transmit it. When the case is rotated to the rear side of the machine, it is possible to shorten the overall length of the machine in the front-rear direction while retracting the reaping part to the rear side of the machine and to effectively store the case. In this case, the transmission case should be rotated toward the rear of the machine to lower the reaping section. It can be carried out effectively to cutting work with the cutting height of.

[0006]

EXAMPLE FIG. 2 is a plan view schematically showing a combine, in which a threshing section A equipped with a feed chain 8 and the like is mounted on a machine body supported by both crawlers 6, and the threshing section A is In the front, each sward plate 9, each raising case 10,
A cutting section B equipped with a cutting blade 11, each scraping wheel 12, a lower transfer body 13, an upper transfer body 14, a vertical transfer body 15, an auxiliary transfer body 16 and the like is provided, and a lateral side of a rear portion of the cutting section B is provided. In the rear, a driving section C having an engine (not shown) installed therein is provided, and between the front portions of both crawlers 6, a transmission case 18 is transmitted from the engine via a belt pulley 17 and drives both crawlers 6. And the threshing part A
A rotatable discharge auger cylinder 20 is extended from the upper rear portion of the Glen tank 19 mounted on the lateral side of the.

A gourd-shaped transmission case 3 in which a bracket 22 is erected on a machine base 21 in the rearward direction of the mission case 18 and both gears 23a and 23b meshing with each other are installed inside
The shaft 2 of the input pulley 1 is inserted into and mounted on the gear 23a at the lower part of the shaft, and the transmission case 3 can be rotated in the longitudinal direction of the machine body with the center of the shaft 2 as a rotation fulcrum O. A belt 25 is attached to the upper part of the bracket 22, the output pulley 24 and the input pulley 1 on the side of the transmission case 18 are hooked, and the connecting piece 26 projecting from the upper rear part of the transmission case 3 is provided. The tip of a piston rod 27a extending from the hydraulic cylinder 27 is connected via a pin 28, and the lower end of the hydraulic cylinder 27 is connected via a pin 30 to a support piece 29 on the machine base 21 in the rearward direction of the bracket 22. The bracket 2 is formed by connecting them.
It is also possible to connect the lower end of the hydraulic cylinder 27 to the stay extending from 2, or use an actuator that expands and contracts instead of the hydraulic cylinder 27.

A cutting input case 31 is extended laterally from the upper portion of the transmission case 3, and the output shaft 4 extending from the center of the gear 23b is provided in the cutting input case 31.
And a transmission shaft 33 that is transmitted from the output shaft 4 via the bevel gear group 32 and drives the auxiliary carrier 16 from the end of the reaping input case 31. From the end portion of the feed chain 8, a inheriting chain 34 is extended so as to overlap with the starting end portion side of the feed chain 8, and a cutting and transmission case for support and transmission that obliquely extends to the upper rear part of the cutting section B. At the rear end of the cutting input case 31, there is formed a fitting portion 5a which can be freely rotatably fitted to a portion formed in the intermediate portion of the reaping input case 31 so as to partially open. The bevel gear 36 is fitted to the bevel gear 38 on the transmission shaft 37 side in the cutting transmission case 5, and the cutting transmission case 5 and the cutting input case 31 are integrally formed to form the transmission. Support tube protruding from the side of case 3 Reaper the end of the input case 31 can also be configured rotate engaged freely fitted.

The tip of the piston rod 40a of the hydraulic cylinder 40 for raising and lowering the reaper is connected via a pin 41 to the connecting piece 39 fixed to the rear of the middle portion of the reaping transmission case 5, and the base end of the hydraulic cylinder 40 is a machine. Frame 42 under the table 21
The support piece 43 fixed to the above is connected via a pin 44.

Further, as shown in FIGS. 7 and 8, the raising case 10 is equipped with a raising / lowering tongue 46 which is connected to a chain 45 and which can be freely retracted / removed. A rubber 48 is loaded and welded to the inner side of the rib 47 side of 46, and as shown in FIG. 8, when the tine 46 retracts into the case at the upper part of the chain 45 and rotates, , It is possible to prevent the accumulation of straw debris and mud on the back side of the tine 46 caused by the conventional method, so that the tine does not receive abnormal force, the chain comes off, and the tine and drive system are damaged. Or noise can be effectively prevented.

Therefore, even if the transmission case 3 rotates or the harvesting transmission case 5 changes in inclination, the transmission is effectively transmitted from the input pulley 1 to the harvesting section B, and FIGS. As shown in FIG. 3, the hydraulic cylinder 27 rotates the transmission case 3 toward the front side of the machine body about the fulcrum O, and the hydraulic cylinder 40 rotates the rear end side of the cutting transmission case 5 with respect to the transmission case 3 while cutting the cutting section. When B is lowered,
When the reaping section B is moved to the front side of the machine body and normal reaping work can be performed, and when the machine body is swung largely as it is, the reaping section B is lifted by the hydraulic cylinder 40 from that state, and the tip is removed. It can be raised until it moves from point a to point b indicated by a virtual line.

When the machine body is turned or traveled on the road in the field, as shown in FIG. 6, the cutting section B is raised by the hydraulic cylinder 40 and the transmission case 3 is moved around the fulcrum O by the hydraulic cylinder 27. When it is rotated to the rear side of the machine as indicated by arrow C, the tip of the mowing section B moves to two points from the point B, and the entire length of the machine in the front-rear direction is moved while retracting the mowing section B to the rear side of the machine. Can be shortened to be effectively stored, and when cutting along the shore, as shown in FIG. 6, the transmission case 3 is turned to the rear side of the machine body so that the cutting section B is removed. If it is lowered, the tip moves from point A to point E to retract the mowing section B to the rear side of the machine while shortening the overall length in the front-rear direction of the machine and improving the turning performance so that the normal cutting height is achieved. Make sure that you can effectively mow It will be capable of, from that state, it is possible to increase the reaper B as shown in phantom in FIG. 6 by the hydraulic cylinder 40.

FIG. 9 shows another embodiment of the present invention, which is substantially the same as the above-mentioned embodiment as indicated by the same reference numeral, but a fixed transmission case in which the tip end side of the shaft 2 is mounted on the side of the bracket 22. Auxiliary carrier 16 which is provided on the side of the transmission case 69 so as to approach the front end of the feed chain 8 by a transmission shaft 50 protruding from the front end of the transmission case 49.
The longitudinal transfer body 15 and the auxiliary transfer body 16, which are moved back and forth as the reaper B moves back and forth, only change the overlap allowance from the reaper B to the threshing unit. It is configured so that grain culm can be effectively supplied to A.

[0014]

As described above, according to the present invention, the cutting case B is lowered while rotating the transmission case 3 forward of the machine body about the fulcrum O and rotating the rear end side of the cutting transmission case 5 with respect to the transmission case 3. If this is done, the reaping section B can be moved to the front side of the machine body to effectively carry out normal reaping work. When the machine body is turned in the field or traveling on the road, the reaping section B When the transmission case 3 is rotated to the rear side of the machine body about the fulcrum O and the cutting section B is retracted to the rear side of the machine body, the entire length of the machine body in the front-rear direction can be shortened and the storage state can be effectively stored. And again
When cutting the shore, the transmission case 3 is rotated to the rear side of the machine body about the fulcrum O to lower the reaping section B, and the reaping section B is retracted to the rear side of the machine body in the front-rear direction of the machine body. The overall length can be shortened and the swivel property can be improved, so that the mowing work can be effectively performed at the normal mowing height, and further, the mowing section B can be retracted in a stable posture, which is preferable. Have.

[Brief description of drawings]

FIG. 1 is a plan view showing an essential part of an embodiment of the present invention in a developed state.

FIG. 2 is a plan view schematically showing a combine.

FIG. 3 is a side view schematically showing a reaper.

FIG. 4 is a side view showing an essential part of the embodiment of the present invention.

FIG. 5 is a side view showing a part of FIG. 4 in an enlarged manner.

FIG. 6 is a side view showing the operating state of FIG.

FIG. 7 is a cross-sectional view showing a raised tine.

FIG. 8 is an internal view showing the upper part of the pulling case with the upper part cut away.

FIG. 9 is a plan view showing another embodiment.

[Explanation of symbols]

 A Threshing part 1 Input pulley 2 Shaft O Rotation fulcrum 3 Transmission case 4 Output shaft B Mowing section 5 Mowing transmission case

Claims (1)

[Claims] 1. A shaft 2 of an input pulley 1 is provided in front of the threshing section A.
A transmission case 3 is installed which can rotate in the front-rear direction of the machine body with a center as a rotation fulcrum O, and an output shaft 4 is provided above the transmission case 3.
Is connected to the upper side of the transmission case 3 so that the rear end side of the cutting and transmission case 5 for support and transmission extending to the upper rear part of the cutting section B can be rotated around the output shaft 4. The harvesting part longitudinal movement adjusting device for a combine, wherein the harvesting part B is configured to be adjustable in longitudinal movement by rotating the transmission case 3 in the longitudinal direction.