JPS6038336Y2 - reaper - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reaping machine such as a combine harvester, and more particularly to a technique for automatically adjusting the cutting height within a set range.

Conventionally, in general reaping machines, based on the detection result of the cutting height detection sensor attached to the reaping section, one reaping section is attached to this machine so that the detection value of this sensor is maintained within the set range. The cutting height was automatically adjusted within a set range by raising and lowering the mowing section around the horizontal axis. As the attitude of the weeding tool and cutting blade to the ground changes, the attitude of the weeding tool and cutting blade to the ground and to the stem culm will naturally change, so adjusting the cutting height will cause variations in the weeding and reaping action. There was a possibility that this would cause problems such as crashing into the ground due to changes in height above the ground.

In view of this point, the present invention always provides good and reliable weeding,
Although the cutting performance is ensured, the desired cutting height is not adjusted.

The reaping machine according to the present invention is configured so that the reaping section equipped on the machine can be raised and lowered from the ground and can freely change its posture on the ground by compound rocking around two horizontal axes. A ground height detection sensor is attached to each of the two locations.Based on the detection results of these two detection sensors, the swing drive device of the reaping section is operated so that the detection results of both sensors are both maintained within the set range. It is characterized in that it is provided with a control device for actuating it.

In other words, the ground posture of the reaping section is kept constant by moving the reaping section up and down so that the detection results of two ground detection sensors attached to the reaping section at a distance from each other are both maintained within the set range. Since the cutting height can be adjusted within the set range while maintaining the cutting height, the attitude of the weed trimmer to the ground, the height to the ground, and the attitude of the cutting blade to the stem culm can be maintained within the set range regardless of the cutting height adjustment. This has made it possible to always ensure good and reliable weeding and cutting performance.

Moreover, since the reaping section is raised and lowered from the ground and its posture relative to the ground is changed by the combined rocking motion around these two horizontal axes, there is an advantage that the support mechanism for the reaping section to the machine can be simple.

Hereinafter, an embodiment of the present invention will be described based on the drawings. The front part of the machine 3, which is equipped with a crawler traveling device 1 and a threshing device 2, includes a grass divider 4, a pulling device 5, a clipper-type cutting blade 6, and a reaped husk. In a combine (an example of a reaping machine) in which a reaping pre-processing section 8 equipped with a device 7 for transporting and supplying culms to a transport start end of a feed chain 2A in the threshing device 2 is connected, an automatic cutting height control structure is configured. Then, the reaping processing section 8 is connected to two sections: a horizontal axis X1 whose position is fixed relative to the machine 3, and a horizontal axis X2 which swings around the horizontal axis relative to the machine 3. It is configured to be able to move up and down on the ground and change its posture on the ground by a compound drive movement around the axis, and the relative position of the reaping processing section 8 is set at three locations spaced apart in the front and back direction of the reaping pre-processing section 8. Ground-type height-to-ground detection sensors 9 and 9' are attached that swing up and down as you move up and down from the ground and change your attitude to the ground, and the detection results of both sensors 9 and 9' are both maintained within a set range. In this way, a control device 11 is provided to operate the hydraulic cylinders 10 and 10' for swinging the pre-reaping treatment section 8.

According to the above configuration, as shown in FIG. 3, the cutting height is automatically maintained within the set range while the ground posture of the pre-reaping processing section 8 is maintained within the set range, regardless of changes in the undulation of the ground.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the reaper according to the present invention, and show the first embodiment.
The figure is a side view of the main part, FIG. 2 is an enlarged side view of the main part, and FIG. 3 is a conceptual diagram showing the running state of the reaping operation. 3... This machine, 8... Reaping section, Xl, X
3... Horizontal axis center, 9, 9'... Ground height detection sensor, 11... Control device, 10, 10
'...Oscillating drive device.

Claims (1)

[Scope of utility model registration request] The reaping section 8 equipped on the machine 3 is connected to two horizontal shaft tubes X1.
Constructed to be able to move up and down from the ground and change its posture on the ground by compound rocking around Based on the detection results of both detection sensors 9 and 9', both sensors 9. The swing drive device 1 of the reaping section 8 is configured so that both detection results 9' are maintained within the set range.
A reaping machine characterized in that it is provided with a control device 11 for operating the reaper at 0°10'.