JPH0446084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for reaping grain culms using a combine harvester, and more particularly to a method for reaping grain culms at the edge of a ridge.

[Conventional technology]

Considering harvesting work using a combine harvester, as a form of conventional work method, when harvesting grain culms at the edge of a ridge, the side of the running vehicle body is brought close to the ridge, and the vehicle body is run along the ridge. There is a method of harvesting grain culms at the edge of the ridge.

[Problems to be Solved by the Invention] Here, considering the structure of conventional combine harvesters, in conventional combine harvesters, a divider is provided at the front end of a reaping section frame that is connected to the traveling vehicle body so as to be able to move up and down. In addition, in the conventional method described above, in which grain culms are harvested at the edge of the ridge, the tip of the divider is attached to the edge of the ridge at the end of the vehicle travel path, that is, at the corner of the field. It is not possible to move the vehicle forward beyond the point where it makes contact with the divider, and with conventional combine harvesters, it is impossible to reap the grain culm located between the tip of the divider and the reaping device. Currently, the crop is harvested by hand.

An object of the present invention is to rationally obtain a reaping method that allows harvesting without increasing the cutting height to the edge of the ridge, even when reaping is performed from the direction crossing the ridge toward the ridge.

[Means to solve the problem]

The feature of the present invention is that the reaping section frame is connected to a traveling vehicle body equipped with a threshing device so that it can be raised and lowered.
In addition to being equipped with a divider and a pulling device, a reaping device is provided at the rear of the divider so that it can be raised and lowered, and the raising operation of the reaping unit frame positions the divider at a higher level than the top surface of the ridge, and the lowering operation of the reaping device positions the divider at a higher level than the top surface of the ridge. The mowing process is carried out by moving the traveling vehicle body forward toward the ridge from a direction intersecting the ridge with the mowing position located at a lower level than the top surface of the ridge.The operation and effect thereof are as follows.

[Effect]

Harvesting work according to the method of the present invention can be expressed as shown in Fig. 1, and in the present invention, as shown in Fig. 1, the levels of the divider 3 and the reaping device 5 are set to advance the traveling vehicle body 2. In this case, the divider 3 and the ridge D do not come into contact with each other, and the reaping device 5 can cut the stock base of the grain culm.

〔Effect of the invention〕

Therefore, there is a reaping method that allows harvesting without increasing the cutting height even when harvesting the grain culm closest to the ridge during reaping by moving the vehicle body in a direction that intersects with the ridge. It was done.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 2, a driving section A is provided at the front of a vehicle body 2 that runs on a crawler traveling device 1, and
A combine harvester is constructed by mounting a threshing device B and connecting a reaping pre-processing section C to the front end of the traveling vehicle body 2 so as to be movable up and down about the left and right axis P of the vehicle body.

The reaping pre-processing section C includes a plurality of dividers 3 for separating the planted grain culms, a plurality of pulling devices 4 for causing the planted grain culms, and a clipper type for cutting the stock base of the planted grain culms. A reaping device 5, a reaped grain culm conveying device 7 that sends the reaped grain culm rearward and upward and supplies it to the feed chain 6 of the threshing device B, and a divider 3... Device 4...
..., is composed of a reaping section frame 8 to which the reaping device 5 and the conveying device 7 are attached, and a hydraulic cylinder 9 disposed between this frame 8 and the vehicle body 2 causes the reaping pretreatment section C to be applied to the vehicle body 2. Elevation is adjusted.

As shown in Figures 1 and 3, the combine harvester is designed to harvest grain by the following method so that the grain culms can be planted at the edge of the ridges without the divider 3 coming into contact with the ridges. .

That is, the reaping section frame 8 includes a vertical transmission frame 8a that transmits the driving force from the vehicle body 2, and a horizontal transmission frame 8 attached to the front end of this vertical transmission frame 8a.
b, a lifting device drive frame 8c that drives the lifting device 4, a divider frame 8d that supports the divider 3, etc., and the cutting blade frame 1 is connected to the cutting blade frame 1 via a bracket 10 attached to the lower surface of the horizontal transmission frame 8b.
1, the reaping device 5 is attached to the front end.

This cutting blade frame 11 is provided to be located below the divider frame 8d, and an arm 12 that swings integrally with the frame 11 is attached to the pivot portion of the cutting blade frame 11. A hydraulic cylinder 13 attached to the divider frame 8d is drivingly connected to the hydraulic cylinder 13, and the height of the cutting blade frame 11 can be adjusted in the vertical direction using the divider frame 8d as an upper limit.

As shown in FIG. 1, when the vehicle body 2 approaches the ridge D, the hydraulic cylinder 9 is driven to raise the entire pre-reaping treatment section C to such an extent that the divider 3 is higher than the height of the ridge D, and at the same time The cutting blade frame 11 is lowered by the hydraulic cylinder 13, and the position of the reaping device 5 is maintained at the normal cutting height.

As shown in FIGS. 3 to 5, the hydraulic cylinder 9 that raises and lowers the reaping pretreatment section C is a single-acting type,
Hydraulic cylinder 1 that adjusts the height of the cutting blade frame 11
3 is a double-acting type, each with a dedicated hydraulic valve 1
4, 15, and this valve 14, 15
The operating section A is provided with operating levers 16 and 17 for independently operating the control levers 16 and 17.

Further, the operating levers 16 and 17 are each biased so as to naturally return to the neutral position indicated by N and N in the figure after the swinging operation, and the regulating piece 16a is attached to the lifting operating lever 16 of the processing section C on the other hand. operating lever 17
It is installed protruding towards the operating path. When the vehicle body 2 approaches the ridge D, the lever 17 is
By operating the cutting blade frame 11 in the downward direction indicated by DOWN, the other lever 16 is also operated in the upward direction of the pre-processing section C indicated by UP in the figure together with the regulating piece 16a, and the reaping device 5 is set in advance. The stroke amount of each hydraulic cylinder 9, 13 is set so as to maintain the same level. By the way, lever 1
When the lever 6 is operated in the direction indicated by DOWN in the figure, the other lever 17 is also operated to the upward side UP, but there is no problem because the reaping device 5 is configured so that it cannot rise above a certain level with respect to the cutting blade frame 8.

The harvested grain culm conveying device 7 also includes an automatic handling depth adjustment device (not shown) that maintains the length of the grain culm inserted into the threshing device B constant even when the level of the tip of the planted grain culm fluctuates. ), and as mentioned above, when the pretreatment part C rises at the edge of the ridge, naturally,
The automatic handling depth adjustment device operates, but since the automatic handling depth adjustment is performed at a relatively low speed, it cannot follow the rise of the pretreatment section C. An operating tool (not shown) for forcibly and at high speed to perform an operation similar to the operation when adjusting the handling depth in the transport device 7 is located in the operating section A.
It is set in.

As shown in FIG. 3, the reaping device 5 consists of a receiving blade 5a fixed to the cutting blade frame 11 and an upper blade 5b that is reciprocally driven, and a driving crank 18 attached to the lower surface of the horizontal transmission frame 8b. A swinging arm 20 that engages with an engaging member 19 attached to the upper blade 5b is connected by a push/pull rod 21, and the reaping device 5 is driven via these.

Ball joints 22, 22 are interposed at both ends of the rod 21 so that there is no problem in driving even when the cutting blade frame 11 is lowered.

[Another Embodiment] In this embodiment, a double-acting hydraulic cylinder 13 was used to adjust the height of the reaping device 5, but instead of this, the height adjustment in the downward direction is performed using the own weight of the reaping device 5. The configuration may be such that only the height adjustment in the upward direction is performed by a hydraulic cylinder, and a single-acting hydraulic cinder may be used, or an electric motor may be used in addition to the hydraulic cylinder.

Furthermore, although the swinging structure is used to adjust the height of the reaping device 5, a link or the like may be used to allow the reaping device 5 to move in parallel.

[Brief explanation of drawings]

The drawings show an embodiment of the grain culm reaping method in a combine harvester according to the present invention, and FIG. 1 is a side view of the front part of the combine with the reaping pretreatment section raised and the reaping device lowered, and FIG. The figure is a side view of the front part of the combine during normal operation, Figure 3 is a perspective view showing the reaping device and drive structure, etc., Figure 4 is a hydraulic circuit diagram showing the hydraulic system, and Figure 5 is a perspective view of the operating lever. It is a diagram. 2... Traveling vehicle body, 3... Divider, 4... Pulling device, 5... Reaping device, 8... Reaping section frame, B... Threshing device, D... Ridge.

Claims (1)

[Claims] 1 A reaping section frame 8 connected to a traveling vehicle body 2 equipped with a threshing device B so as to be freely up and down is provided with a divider 3 and a raising device 4, respectively, and a reaping device 5 is provided at a rear position of the divider 3 so as to be movable up and down. The traveling vehicle body moves with the divider 3 positioned at a higher level than the upper surface of the ridge D by the raising operation of the reaping section frame 8, and the reaping position positioned at a lower level than the upper surface of the ridge D by the lowering operation of the reaping device 5. A method for reaping grain culms in a combine harvester, which is carried out by moving the grain culm 2 forward toward the ridge D from a direction intersecting the ridge D.