JPS5841811Y2 - combine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a combine harvester that enables automatic cutting height adjustment by raising and lowering the cutting section using a hydraulic device or the like.

When operating a combine harvester, it is necessary to operate a large number of mechanisms and monitor the operating status of each mechanism, so it is desirable to simplify the operation in order to reduce the labor burden on the operator.
It will be done.

In the present invention, the reaping latch is automatically engaged by operating the reaping section upper and lower levers provided on the driver's seat operation section to lower the reaping section, thereby omitting the operation of the reaping latch lever and automatically DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to drawings showing embodiments thereof, with the aim of providing a combine harvester in which cutting height adjustment can also be initiated.

Figure 1 shows the combine harvester according to the present invention (hereinafter referred to as the proposed product)
10 is a perspective view of a turning back device 11 and a grass dividing board 12.
, a grass cutting board attachment shaft 13, a cutting blade 14, and the like.

This reaping section 10 is a reaping section up and down lever provided in the driver's seat operation section located on the left front side of the driver's seat 1 (see Fig. 2, 8).
When operated, a hydraulic circuit is activated to raise and lower the mowing height and manually adjust the cutting height.

Reference numeral 20 denotes the shaft portion 1 of one of the grass divider plates 12 as shown in FIG.
2a or the sensor to be attached to the grass dividing plate attachment shaft 13, which includes an attachment piece 21 fixed to the shaft portion 12a, an attachment piece 22 whose center portion is rotatably fixed to the attachment piece 21, and an attachment piece 22. A spring 23 stretched between the rear end and the back side of the grass dividing plate 12 and urging the rear end of the mounting piece 22 toward the grass dividing plate 12, and a round bar whose front and rear ends are curved in the same direction, The sensor arm 24 consists of a sensor arm 24 rotatably attached to the front end of the mounting piece 22 at a portion slightly toward the center of the front end with both ends facing upward and the rear end facing the cutting blade 14 side. 20 is on the ground surface E due to the bias of the spring 23.
The amount of rotation of the sensor arm 24 that rubs the reaping section 10
The distance between the ground and the ground surface E can be detected.

2 is a reaping latch lever provided on the driver's cab 3,
A reaping latch wire 4 connected to a reaping latch (not shown) is attached to the arm 2a formed at the pivot portion at the base of the arm 2a.
One end is fixed.

When the reaping latch lever 2 is tilted backward as shown by the solid line in FIG. 2, the reaping latch is disengaged, and when it is tilted forward as shown by the two-dot chain line, the latch is engaged.

A locking member 2 is provided on the front part of the reaping latch lever 2.
A wire 6 is connected between the locking member 2b and the front end of the sensor arm 24, and a fixing member L at the end of the sleeve I protects the wire 6.
a and 7b are fixed to appropriate locations inside the driver's cab 3.

The sensor arm 24 and the reaping latch lever 2 are
The rear end portion of the sensor arm 24 is
When the reaping latch lever 2 is rotated upward (the distance between the tip of the reaping latch and the ground surface E is approximately 10 cm), the reaping latch lever 2 moves from the rear to the front as shown by the arrow, changing the reaping latch from the disengaged state to the engaged state. are interlocked by a wire 6.

That is, the distance between the front end of the sensor arm 24 and the locking member 2b of the reaping latch lever 2 changes to near or far depending on the size of the distance between the reaping section 10 and the ground surface E, so that the distance increases. If it becomes small, a certain length of wire 6
is configured to pull and rotate the reaping latch lever 2.

Furthermore, a locking member 2c is also placed on the rear surface of the reaping latch lever 2.
is provided protrudingly, and the locking member 2 is provided in a manner corresponding to the size of the distance between the rear end portion of the sensor arm 24 and the reaping portion 10 and the ground surface E.
A wire 9 is connected between the locking member 2c and a suitable portion whose distance from C changes in distance.

When the distance exceeds a predetermined value (for example, the distance between the tip of the grass dividing board 12 and the ground surface E is 12 to 13 cm), the wire 9 is pulled to move the reaping latch lever 2.
is tilted backwards and the reaping latch is released.

On the other hand, the front end of a locking member 8a fixed so as to face front and back in the middle of the reaping section upper and lower lever 8 provided on the driver's seat operation section, the rear end of the mounting piece 22 of the sensor 20, and the rear end of the locking member 8a and the front ends of the mounting piece 22 are connected by wires 9a and 9b, respectively, and the distance is determined by the amount of rotation of the sensor arm 24 determined by the distance.
When this happens, the wires 9a and 9b pull the reaping section upper and lower levers 8 forward (rearward), and the hydraulic lifting pulp 8b that is linked with the reaping section upper and lower levers 8 is switched to lower (increase) the hydraulic pressure. The cutting unit 10 is lowered K (raised by h) and automatically adjusted so that the front gap or cutting height is approximately constant (5 to 10 cm in distance between the tip of the grass dividing board 12 and the ground surface E). It has become.

Next, to explain the operation and operation of this product, the reaping section 10 is moved by manual operation of the trench reaping section upper and lower levers 8.
When the sensor arm 24 is lowered at a predetermined position 1, the distance between the reaping section 10 and the ground surface E decreases, so that the rear end of the sensor arm 24 is pressed by the ground surface E and rotates upward.

The wire 6 connected to the front end of the sensor arm that rotates downward with this rotation pulls the reaping latch lever 2, and when the amount of rotation of the sensor arm 24 reaches a predetermined amount, the reaping latch lever 2 As shown by the two-dot chain line, the reaping latch connected to the reaping latch wire 4 is engaged with the reaping part 10 by forward rotation of the arm 2a.
starts the reaping operation.

When such a mowing operation is started, automatic mowing height adjustment is performed by rotating the sensor arm 24.

That is, as described above, when the distance between the reaping section 10 and the ground surface E becomes dog (small), the wires 9a and 9b pull the reaping section upper and lower levers 8 forward (rearward), and the hydraulic lift valve 8b interlocked with the reaping section upper and lower levers 8 is activated. By performing a switching operation to lower (increase) the hydraulic pressure, the reaping section 10 is lowered (raised) and automatically adjusted so that the separation dimension or cutting height is constant.

Of course, it is also possible to adjust the cutting height by manually operating the cutting section upper and lower levers 8.

When the reaping operation is to be stopped, when the reaping section 10 is raised at a predetermined position 1 by manual operation of the reaping section up and down lever 8, the reaping latch lever 2 is tilted backward by the traction of the wire 9, and the engagement of the reaping latch is released. Reaping operations will be stopped.

In such a combine harvester of the present invention, the reaping section upper and lower levers 8
The reaping latch is automatically engaged and disengaged by operating the reaping latch, and the cutting height is also automatically adjusted accordingly. There is no need to operate lever 8,
The driver's labor burden is significantly reduced.

As a result, the present invention has the advantage of allowing the operator to concentrate on safe and efficient operation of the combine harvester.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a perspective view of the product, and FIG. 2 being a schematic side view of the main parts of the product. 1... Driver's seat, 2... Reaping latch lever, 3... Driver's cab, 4... Reaping blade wire, 6... Wire, 8... ... Reaping section upper and lower levers, 10 ... Reaping section, 12 ... Grass dividing board, 20 ... Sensor, 24 ... Sensor arm.

Claims (1)

[Scope of utility model registration request] In a combine harvester that allows the cutting height to be adjusted by raising and lowering the reaping section, a sensor that rotates by sliding on the ground surface is attached to the lower part of the reaping section, and the distance between the reaping section and the ground surface detected by the sensor is adjusted. A combine harvester characterized in that the sensor and its elevating means are interlocked so that the reaping latch is cut in association with the sensor and the reaping section is raised and lowered in accordance with the separation dimension.