JPS59232019A - Reaming harvester - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a reaping harvester 1. Specifically, the present invention relates to a reaping harvester that is equipped with an ultrasonic sensor that detects the height of the reaping section above the ground in order to control the reaping height.

Conventionally, in this type of reaping/harvesting machine, cutting height has been controlled to keep the cutting height at a predetermined height by raising and lowering the cutting section based on the height detected above the ground by an ultrasonic sensor. However, the conventional configuration has the following disadvantages.

In other words, since the reaping unit was controlled to be raised and lowered immediately based on the height detected by the ultrasonic sensor, the reaping unit was raised and lowered unnecessarily, causing so-called hunting.
There were cases in which the cutting section was lowered too far by mistake, causing it to fall into the ground.

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a reaping harvester equipped with a means capable of controlling the cutting height with an appropriate control response.

In order to achieve the above object, the reaping part T4Iij according to the present invention
A measures the number of times that the height above the ground detected by the ultrasonic sensor falls outside the predetermined height range including the reference value, and based on the measurement result of this number of times, the detected height above the ground falls within the predetermined height range. It is characterized in that it is provided with means for detecting the outer scalp.

Because of the above characteristics, the following excellent effects have been achieved.

In other words, since a means is provided to detect an inclination in which the detected height above the ground deviates from the standard height range, an appropriate control response is automatically made by changing the elevation speed of the reaping section based on the inclination detection result. It is now possible to make the day look like this.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the front reaping part tl+ of a combine as a reaping harvester, and the reaping part 111 has a pulling device (2), a reaping device IB1%4 and a feeding device (4). death,
A weeding tool (5) is provided in front of the pulling device (2), and the lower tip of the weeding tool (5) is fixed to the support frame (6) of the reaping device il+. and an ultrasonic sensor (9) consisting of a transmitter (7) and a receiver (8).
However, in order to prevent malfunctions caused by grain culms, the weeding tool (5
), the hydraulic cylinder (10) is operated based on the height above the ground detected by the ultrasonic sensor (3). The cutting height is adjusted by swinging the cutting section Il+ around the horizontal axis (P1).

Hereinafter, a control system for controlling the cutting height based on the detection result of the height above the ground by the ultrasonic sensor (9) will be explained.

As shown in FIG. 2, the control system includes a control device (main part of which is a microcomputer) that inputs signals from the receiver (8) of the ultrasonic sensor (3) and
The output signal of the potentiometer (12) as a means for presetting the cutting height (height above the ground) is input, and the detection height above the ground (6) by the receiver +81 so that ~
The electromagnetic pulp track is driven and the reaping section (1) is automatically raised and lowered by the hydraulic cylinder (10).

And the control device (by the river, the detection height above the ground is 6
) is outside the predetermined height range (±Δ) including the reference value (H[l) (1) and the number of times (j) is within the range is counted for each height above ground measurement, and this number ( i), (j
) has reached the predetermined number of times (5), and the number of times (1) that the value obtained by multiplying this total (1+j) by the predetermined ratio (hand blowing) is outside the predetermined range (±Δ) If the height above the ground 6) is outside the standard range (±l), the alarm device 04)
to inform the operator that the mowing height setting is not good, and to make the operating speed of the hydraulic cylinder (lO) in the direction of lowering the reaping part (1) slower than in the upward direction. The electromagnetic pulp (1m) drive gain is automatically reduced.

Therefore, when controlling the elevation of the reaping section 111, it is checked whether the set cutting height is at an appropriate T.
The descending speed of the reaping section 111 is automatically set to the blue/gold side so as to provide an appropriate control response, and it is possible to prevent inconveniences such as accidentally pushing the reaping section (1) into the ground. reached.

Incidentally, FIG. 3 is a flowchart showing the operation of the control device (11) described above.

In addition, when it is detected that the slope of the detected height above the ground 6) is outside the predetermined range (±Δ) is greater than or equal to a predetermined value (6)-, the reference value (■) is automatically increased. may be configured.

Furthermore, when checking the above-mentioned inclination, the number of detections (6) of heights above the ground that are outside the above-mentioned reference range (±Δ) every predetermined time
It may be configured to perform this depending on whether the count value of the amount) is equal to or greater than a predetermined number of times.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping harvester according to the present invention, in which FIG. 1 is a front side view of the combine, FIG. 2 is a block diagram of the control system, and FIG. 3 shows the operation of the control device.
-It is a chart. 111... Reaping part - (button... Ultrasonic sensor, (6)... Detection height above ground, (8)...
...Reference value, (±Δ) ...Specified height range,
(i)...Number of measurements.

Claims (1)

[Claims] The reaping/harvesting machine is equipped with an ultrasonic sensor (9) for detecting the height of the reaping section 111 above the ground in order to control the cutting height, and the height above the ground detected by the ultrasonic sensor (9) is ) is the standard value (predetermined height range including barrels)
means for measuring the number of times (i) in which the height is outside the range, and detecting a scalp where the detected height above the ground is outside a predetermined height range (2) based on the measurement result of the number of times (i). Reaping harvester.