JPS63217A - Reaping height control apparatus in combine - 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 (Field of Industrial Application) The present invention relates to a cutting height control device for a combine harvester.

(Prior art) Conventionally, there is a known device having a position sensor setting dial, a position sensor for controlling cutting height, a mechanism for moving the reaping device up and down with one manual lever, and a collision prevention sensor having an off-delay release mechanism. It is.

(Problems to be Solved by the Invention) The release mechanism of the known off-delay (a type that opens and closes contacts after a certain distance when the current power source is turned off) operates based on the traveling distance, so it is difficult to stop the off-delay. It will remain on. Therefore, the manual lever and position sensor setting dial a horn cannot be controlled.

(Means for Solving the Problem) Therefore, the present invention provides a position sensor setting dial B, a position sensor 17 for controlling cutting height, a mechanism for moving the reaping device 4 up and down with a manual lever 24, and a mechanism for canceling off-delay. The off-delay is a mowing height control device for a combine harvester which is released by operating the position sensor setting dial 5 and the manual lever 24.

(Example) An embodiment of the present invention will be described with reference to the drawings.

1 is the frame of the combine, 2 is the running gear 4 provided below the frame 1, 3 is an automatic feeding type threshing device provided on one side of the frame 1, 4 is the reaping device provided in front of the frame 1, It is formed so that its tip can move up and down as shown by arrow A with respect to frame l, centering on horizontal axis 5. 6 is the reaping frame of the reaping device 4, 7 is the vertical movement device 1 (cylinder), the - end is pivoted 8 to the frame l side, the other end is pivoted to the reaping frame 6 side, and the vertical movement device When 17 expands and contracts, the reaping device 14 moves up and down around the horizontal axis 5. 10 is the frontmost weed cutting body, 11 is a pulling device provided at the rear of the grass cutting body 10, 12 is a cutting blade, 13 is a raking device, 14 is a culm conveying device, 15 is a culm feeding device, and 16 is a driver's seat. , length is the operation part.

A position sensor 17 is provided near the shaft 5, and a pressing piece 19 on the reaping device 4 side is in contact with a sensor protrusion 18 of the position sensor 17.

An ultrasonic sensor J is attached to the lower portion l of the reaping device 14. 21 is a mounting plate for mounting the ultrasonic sensor 9 to the reaping frame 6. The ultrasonic sensor automatically measures a reference value, emits ultrasonic waves to the ground based on the reference value, and automatically controls the height of the reaping device 4 above the ground. Reference numeral 22 denotes a collision prevention sensor, which has an off-delay release mechanism that is turned off and then released after driving a certain distance.

Reference numeral 26 denotes an autolift switch that is turned on and off using the manual lever 24. For example, when pulled toward you, the reaping device 4 is moved upwardly over the position sensor 17, and when pushed toward the opposite side, the switch is turned on and off over the position sensor 17. Move the reaping device 4 downward.

n is a speed sensor 11, which is installed at any position on the frame 1, and is connected in such a way that the vertical movement device 7 by the ultra-f-wave sensor control device 3 will not operate below a constant speed. .

However, when the position sensor setting dial 3 is adjusted to a desired position, the position sensor 17 operates based on the setting, but it has priority over the off-delay canceling mechanism and cancels the off-delay.

The ultrasonic sensor is connected to a control device, and if the reference height of the ultrasonic sensor is not established, the position sensor continues to control the position.

(effect) Next, we will discuss the effect.

When the manual lever 24 is turned to the opposite side, the position sensor 1
The reaping device 4 is moved downward in priority to 7.

Next, when the traveling device 2 is rotated and moved forward, the grass is divided by the weed cutting body 10, raised by the pulling device 11, the roots are cut by the cutting blade 12, and raked by the raking device 13, and the culm conveying device 14
Then, the culm feeder 15 takes over the grain, and the automatic feed threshing device 13 threshes the grain.

However, due to the position sensor settings,
By setting the desired cutting height,
The cutting height of the reaping device 4 is automatically adjusted by contact between the sensor 18 of the position sensor 17 and the pressing piece 19 of the reaping device.

In addition, when the position sensor setting dial reaches the cutting height, the ultrasonic sensor automatically measures the ground height multiple times to determine a reference value, and automatically controls the height based on the reference value. Start.

However, when the aircraft sinks, the collision prevention sensor η detects this and turns off the off-delay, but the off-delay measures the travel distance of the combine with the vehicle speed sensor n and calculates a certain distance based on that. Since the reaping device 14 is released after a delay, even if the manual lever 24 is operated to raise the reaping device 14 when the control/hain is stopped, the reaping device 14 will not be raised.

However, in the present invention, the off-delay is canceled when the manual lever 24 is operated or when the operating range of the position sensor 17 is changed by operating the position sensor setting dial.
If the reaping device 24 hits a protrusion and stops, the reaping device 4 can be raised at any time by operating the manual lever 24 or the position sensor setting dial 25.

(Effects) Conventionally, there have been known devices that have a position sensor setting dial, a position sensor for controlling the cutting height, a mechanism for moving the reaping device up and down with a manual lever, and a collision prevention sensor that has an off-delay release mechanism. be.

The known off-delay release mechanism (which opens and closes the contacts after a certain time delay when the current power source is switched off) is activated by the distance traveled, so it remains on at stop+h. Therefore, -F movement/height and position sensor setting dial control cannot be performed.

However, the present invention has a position sensor, a setting dial B, a cutting height control position sensor 17,
A mechanism for moving the reaping JA214 up and down with a moving lever 24;
In the collision prevention 11-sensor η having an off-delay release mechanism, the off-delay is
This is a cutting height control device for a combine harvester that is released when the position sensor setting dial 25 and manual lever 24 are operated. When the range of operation of the position sensor 17 is changed, the off-delay is canceled. By operating the manual lever 24 or the position sensor setting dial 3, the reaping device 4 can be raised at any time.

[Brief explanation of drawings]

FIG. 1 is an overall side view, FIG. 2 is an installation diagram of the ultrasonic sensor, FIG. 3 is a block diagram, and FIG. 4 is a flow chart. Explanation of symbols 1... Frame, 2... Traveling device, 3... Automatic feed type threshing device, 4... Reaping device, 5... Horizontal shaft, 6...
-・Frame, 7...-vertical movement device, 8... Axis mounting,
9... shaft attachment, 10... splitting body, 11... lifting device, retainer... cutting blade, 13... raking device! 4... Shell culm conveyance device, 15... Shell culm supply device, 16... Driver's seat, 17... Position sensor, 18... Sensor, 19... Pressing piece, pressure... super Sonic sensor, 21
...Mounting plate, η...Pulsion prevention IF sensor, 23...Culm presence/absence sensor, 24...Manual lever, δ...Position sensor setting dial, 26...
・Auto lift switch, n...Vehicle speed sensor, n・
-・Off (+valve, n...control device, yaku...operation unit.

Claims (1)

[Claims] In the device having a position sensor setting dial 25, a position sensor 17 for controlling cutting height, a mechanism for moving the reaping device 14 up and down with a manual lever 24, and a thrust prevention sensor 22 having an off-delay release mechanism, the above-mentioned The off-delay is a cutting height control device for a combine harvester that is released by operating a position sensor setting dial 25 and a manual lever 24.