JPS589646B2 - Combined harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reaping section elevating device in a combine harvester.

In other words, in a combine harvester configured to automatically adjust the height of the reaping section by operating a hydraulic mechanism depending on the ground contact state of a detection sled mounted near the cutting blade, the reaping section is raised when turning during combine harvesting operation. At the same time, the clutch of the reaping section is disengaged, and in conjunction with the operation of the reaping clutch lever that disengages the clutch, the sled body can be raised to the upper limit side position and supported, and the sled body can be lowered and caught on objects. It is provided so that it can be operated without causing damage or creating a dangerous situation, and moreover, it can be operated without having to perform a separate operation.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the combine harvester, in which a threshing device B is mounted above a machine stand 5 installed above a crawler-type traveling body 4, and a reaping section A is installed in front of the threshing device B. On the right side, a control tube 6 is disposed at the front and a seat 7 at the rear to constitute a control section, and the machine base 5 rotates around a fulcrum 0 supported at the rear side of the traveling body 4. A hydraulic cylinder 8 which is pivotally supported and supported on the front side of the traveling body 4 is interposed between the machine base 5 and the machine base 5 rotates around the fulcrum point 0 by the hydraulic operation of the hydraulic cylinder 8 to perform the reaping. Part A is configured to move up and down.

In the reaping section A, a grass cutting body 10 is obliquely attached to the tip of a reaping frame 9 that extends forward, a pulling device 11 is installed obliquely behind it, and a reaping blade 1 is installed astride the reaping frame 9 at the lower rear part. is installed horizontally, a lower conveyor 12 is installed from above the cutting blade 1 to the rear, and an upper conveyor tine 13 is installed above the lower conveyor 12, and a transfer conveyor is installed from the rear of the lower conveyor 12 to the starting end of the feed chain 14 of the threshing device B. 15 is installed, and a straw cutter 17 which becomes the terminal end side of the straw removal chain 16 is installed at the rear of the threshing device B.

2 is a long detection sled body with a U-shaped cross section, and its front end is attached to the front part of the cutting frame 9 on the grass cutting body 10 side with a horizontal pin 18.
The rear part of the sled body 2 extends to the side of the cutting blade 1, and the support rod 19 fixed to the front part of the sled body 2 on the center side is held so as to hold the reaping frame 9. and extend upward.

20 is a push-pull wire of a known structure,
A mounting portion 23 at one end of a push-pull wire 20 is connected to a support 22 of a frame 21 fixed to the reaping frame 9, and an operating rod 20 extends from the wire 20.
The tip of the push-pull wire 20 is connected to the upper part of the support rod 19, and the other end of the push-pull wire 20 is connected to the operating box 24 fixed above the machine base 5, and the rod 25 extends from the operating box 24. , the control valve 26 that operates the hydraulic cylinder 8 is operated, and the push-pull wire 20 is connected to the rod 25 side by the switching operation lever 27 extending from the operation box 24 to raise and lower the automatic reaping section A. By operating the lever 27, the operation of raising and lowering the reaping section A can be switched and operated manually.

In the control tube 6, an arc-shaped interlocking rod 29 is connected to the reaping clutch lever 3 which can rotate around a fulcrum 28 in the same manner as in the known structure, and a wire 30 is connected to the interlocking rod 29.
The reaping clutch wire 31 is extended from the reaping section A so that the clutch of the reaping blade 1, etc. in the reaping section A can be operated.
An operating wire 32 connected to the wire 30 is extended, and a support metal 33 is attached to a support frame 21' connected to the frame body 21.
The actuation wire 32 is inserted through a support 33 and the upper end of a tension spring 34 is connected to the end thereof, and the lower end of the tension spring is connected to a connecting metal 35 fixed to the rear part of the sled body 2. do.

Therefore, when the switching operation lever 27 is automatically operated during combine harvester operation, the sled body 2, which is pressed downward by the pushing action of the push-pull wire 20, is in contact with the ground, as shown in FIG. As shown by the imaginary line, the sled body 2
When the height of the cutting blade 1 decreases and the height of the cutting blade 1 becomes too high, the push-pull wire 20 pulls against the operating box 24 side and operates the rod 25 to close the control valve 2.
6, the hydraulic cylinder 8 is hydraulically operated, and the cutting section A is lowered together with the machine base 5 rotating around the fulcrum O, and the height of the cutting blade 1 is lowered to automatically achieve a suitable cutting height. It is adjusted to

On the other hand, if the sled body 2 rises too high and the height of the cutting blade 1 becomes too low as shown by the solid line in FIG. The control valve 26 is reversely actuated via the holder 5, and the reaping section A is raised together with the machine stand 5.
The height of the cutting blade 1 is raised and automatically adjusted to a suitable cutting height.

When manually raising and lowering the reaping section A, operate the switching operation lever 27 to switch off the automatic mode, and then turn the lever 27
By operating the rod 25 directly, the cutting section A can be raised and lowered, and the height of the cutting blade 1 can be manually adjusted.

By the way, regardless of whether the operating state is automatic or manual, when the aircraft turns, etc., the reaping section A
is raised and the reaping clutch lever 3 is operated to stop the driving parts such as the cutting blades 1 in the reaping section A.
As shown in FIG. 3, when the reaping clutch lever 3 is operated to disengage the clutch, the operating wire 32 is pulled and the tension spring 34 is also pulled, causing the sled body 2 to rotate around the pin 18 and come into contact with the reaping frame 9. As a result, the sled body 2 can be pulled up to the upper limit position, as shown by the imaginary line in FIG.

When lowering the reaping section A to return to the working state, the reaping clutch lever 3 is engaged as shown by the imaginary line in FIG. 3 to drive the reaping section A, but at the same time the operating wire 32 and the spring 34 is relaxed;
The forced lifting of the sled body 2 can be canceled and the sled body 2 can be brought into an automatic or manual operating state.

In this way, the present invention operates the hydraulic mechanism depending on the grounding state of the detection sled body 2 provided in the vicinity of the cutting blade 1 to detect the cutting part A.
In a combine harvester configured to automatically adjust the height of the sled body 2, when the sled body 2 is operated by the reaping clutch lever 3 which operates the clutch of the reaping part A, the sled body 2 moves to the upper limit position. Since the reaping clutch lever 3 is configured to be connected so as to be raised and supported, the reaping clutch lever 3 is used to raise the reaping section A when turning during combine harvester operation, and to disengage the clutch of the reaping section A.
The detection sled body 2 can be raised to the upper limit position and supported in conjunction with the operation of It has the feature that it can be operated without fail so that it will not occur, and that it can be operated easily without forgetting to do so with the reaping clutch lever 3 without having to perform a separate operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of a combine harvester, FIG. 2 is a schematic side view showing the main parts, and FIG. 3 is a side view of the main parts. 1...Mowing blade, 2...Detection sled body, A
... Reaping section, 3 ... Reaping clutch lever.

Claims (1)

[Claims] 1. Reaping in which the clutch of the reaping section A is operated in a combine harvester configured to automatically adjust the height of the reaping section A by operating a hydraulic mechanism depending on the grounding state of the detection sled body 2 provided near the cutting blade 1. When the clutch lever 3 engages the sled body 2, and the reaping clutch lever 3 performs a cutting operation, the sled body 2
A reaping section elevating device characterized in that the reaping section lifting device is configured such that the movable sections are raised and supported to an upper limit side position.