JPS582195Y2 - Automatic cutting height adjustable reaper - Google Patents

Description

[Detailed description of the invention] The present invention is a combine that is configured to detect the current ground action height of the cutting blade and automatically adjust the cutting blade to the appropriate action height position based on the detection result. Regarding reapers such as.

In conventional automatic cutting height adjustment type reapers, a ground sensor for detecting the current ground action height of the cutting blade is installed at one end of the cutting blade in the width direction. When the machine tilts to the left or right due to land conditions, the position of one end of the cutting blade in the width direction changes the most vertically.
There is a huge difference between the height detected by the sensor and the actual average height of the cutting blade, which causes the cutting blade to rise and fall excessively, making the stubble grow abnormally tall.

Alternatively, there is an inconvenience in that the cutting blade may be brought into improper contact with the ground.

In addition, sensors are installed at both ends of the cutting blade in the width direction.
There is also a method of moving the cutting blade up and down based on the average value of the height detected by both sensors, but this method requires two sensors and the average value of the height detected by both sensors. The need for a mechanism to calculate , complicates the overall structure and increases costs.

In view of these points, the present invention has a simple structure, is easy to construct at low cost, and also has the object of detecting the average height of the cutting blades and making it possible to perform appropriate and good cutting height adjustment. Have a purpose.

In the automatic cutting height adjustment type reaping machine according to the present invention, as described at the beginning, the ground sensor for detecting the current ground action height of the cutting blade is provided at or near the center position of the width of the cutting blade. Features.

That is, according to the present invention, the amount of vertical movement of the sensor installation position as the machine body tilts from side to side is the sum of the amount of vertical movement of both ends of the width of the cutting blade; Since this is equal to the average vertical movement amount of , it is possible to detect the substantial average height of the cutting blade when the machine body is tilted from side to side by simply providing one sensor.

Therefore, the present invention uses only one sensor, has a simple structure, is easy to implement at low cost, and detects the substantial average height of the cutting blade to prevent the cutting blade from unduly touching the ground. It has now become possible to automatically adjust the cutting height appropriately and satisfactorily.

Hereinafter, an embodiment of the present invention will be explained based on a combine harvester (an example of a reaping machine) shown in the drawings. The dividing rod that moves between the rows of planted culms 6...
・A pulling device 7 for raising the planted shell culm that has been transferred between the adjacent branching rods 6, 6 into a vertical position... and cutting the stock base of the raised planted shell culm. A cutting section 8 having a cutting blade 1 is mounted so as to be able to swing up and down, and the current height of the cutting blade 1 relative to the ground is detected, and based on the detection result, the cutting section 8 moves the cutting blade 1 to the cutting section 8. The structure includes a mechanism that automatically adjusts the height to a proper operating height position.

The automatic adjustment mechanism is provided with a hydraulic cylinder 9 that drives the reaping part 8 up and down, and the current height of the cutting blade 1 relative to the ground is determined by the cutting rod 6 located at the center of the width of the cutting blade 1, and its ground contact angle. If the ground contact angle is more than a constant value,
If the current ground action height is too high), use the hydraulic cylinder 9
A sensor 2 may be provided to energize the zero control electromagnetic pulp on the descending side, and to energize the control electromagnetic pulp on the ascending side when the grounding angle is smaller than a certain value.

In addition, in this machine 5, when the reaping section 8 rises to the upper limit position at 1, by contacting the arm 10 connected to the reaping section 8, the power to the electromagnetic pulp is cut off and the electromagnetic pulp is neutralized. A switch 11 is provided for elastically returning the switch.

Further, the electromagnetic pulp electric wire 12 from the sensor 2 is arranged in the dividing rod 6 to which the sensor 2 is attached, with a plug 13 for guiding the electric wire 12 into the dividing rod 6, with the dividing rod 6 serving as a protection tube. It is.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the automatically adjustable cutting height reaping machine according to the present invention, and FIG. 1 is an enlarged side view of the main part, and FIG. 2 is an enlarged front view of the main part. 1...Mower blade, 2...Sensor.

Claims (1)

[Scope of utility model registration request] The mower is configured to detect the current ground action height of the cutting blade 1 and automatically adjust the cutting blade 1 to an appropriate action height position based on the detection result, the cutting blade 1 A ground sensor 2 for detecting the current ground action height is provided at or near the center of the width of the cutting blade 1.