JPH0116121B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tiller operation system for a tiller equipped with a control mechanism for rolling the tiller with respect to a self-propelled vehicle so as to maintain the tiller's attitude toward the ground constant or almost constant. Regarding structure.

The above-mentioned tiller has conventionally been configured to correct the attitude of the tiller at a constant speed, and if the traveling speed of the self-propelled vehicle increases, there will be a delay in correcting the attitude of the tiller. In order to prevent this, if the posture correction is performed at high speed, the tilling device will move too much due to dynamic inertia when it is stopped, which has the disadvantage that finishing accuracy will deteriorate in any case. .

In view of the above-mentioned circumstances, the present invention aims to correct the posture of a self-propelled vehicle as much as possible when the self-propelled vehicle is traveling at a high speed, while minimizing excessive movement when stopped due to dynamic inertia when the self-propelled vehicle is traveling at a low speed. The rolling control of each tilling device is performed without delay, and there is no need to take special effort to adjust the speed for this purpose, so that the work can be completed no matter how high or low the self-propelled vehicle is running. The purpose is to enable efficient operation with extremely high accuracy.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, a rotary tilling device 2 is installed at the rear of a passenger self-propelled vehicle 1 having a wheel-type traveling device.
are connected so that they can be raised and lowered by a link mechanism 4 that can be freely oscillated up and down by a fluid pressure cylinder 3, and configured to transmit rotational power from the self-propelled vehicle 1 to the tilling device 2, thereby creating a riding type tiller. The machine has been configured.

In the link mechanism 4, as shown in FIG. 2, one of the pair of left and right lift arms 5a, 5b
a and one 6a of a pair of left and right lower links 6a, 6b are pivotally connected by a rod 7, and
The other lift arm 5b and the other lower link 6
b are pivotally connected to each other by a fluid pressure cylinder 8, and by operating this cylinder 8, the lower link 6b is vertically swung, and by the flexibility of the connection part of the link mechanism constituent members, the tilling device 2
It is possible to perform a rolling operation on the self-propelled vehicle 1. As shown in FIG. 1, a weight or a float is installed inside a case that swings together with the self-propelled vehicle 1, and the displacement of the weight or float with respect to the case as the self-propelled vehicle 1 swings from side to side. Vehicle body inclination angle detection device 9 configured to detect the inclination direction and inclination angle of the self-propelled vehicle 1 based on the direction and amount of displacement, and to electrically extract the detection results.
is attached to the self-propelled vehicle 1 and is configured to extend and contract integrally with the cylinder 8 by being constructed and connected across the cylinder tube side and the piston rod side of the cylinder 8, and this telescoping member 10. It consists of a potentiometer 11 that is linked with A tilling device inclination angle detection device 12 configured to be taken out is attached to the link mechanism 4. As shown in FIG. 3, based on information from the vehicle body inclination angle detection device 9 and a setting device 13 that manually sets the inclination direction and inclination angle of the tilling device 2 to be maintained with respect to the ground in a freely changeable manner. A device 14 for calculating the target angle and direction at which the tilling device 2 should be rolled relative to the self-propelled vehicle in order to correct its posture, based on information from this corrected target angle calculating device 14 and the tilling device inclination angle detecting device 12, respectively. The cultivation device 2 comprises a device 16 that automatically operates the control valve 15 by applying a pulse signal to the electromagnetic operating section of the control valve 15 for the cylinder 8 so that both pieces of information match or almost match.
A control mechanism 17 configured to automatically operate the cylinder 8 so that the ground attitude of the cylinder becomes the one set by the setting device 13 or close to it.
is linked to both the detection devices 9 and 12, so that even if the self-propelled vehicle 1 tilts to the left or right, the control mechanism 17 ensures that the ground posture of the tilling device 2 is set by the setting device 13 or close to it. This allows work to be carried out while maintaining the left and right plowing depths at or close to the set depth.

As shown in FIG. 3, a device 19 detects the rotational speed of the transmission shaft from the engine 18 of the self-propelled vehicle 1 to the transmission transmission transmission transmission 20 for traveling as the rotational speed of the engine 18, and a gear change state of the transmission transmission transmission 20 for traveling. Device 2 that detects the shift lever based on the position of the gear shift lever
1, and a circuit 22 that calculates the traveling speed of the self-propelled vehicle 1 based on electrical information from each of these detection devices 19 and 21. A device 23 that detects the traveling speed of the self-propelled vehicle 1 is configured from each of them. . Then, by changing the pulse width or transmission interval of the pulse signal applied to the control valve 15 from the valve operating device 16, which corresponds to putting the valve 15 into the cylinder driving state, the valve 15 is brought into the cylinder driving state within a unit time. A speed change operation device 24 is attached to the control mechanism 17 and configured to change the operating speed of the tilling device by the control mechanism 17 by changing the time at which the tiller is operated.
Based on the information from 3, as the traveling speed of the self-propelled vehicle increases, the speed at which the tilling device is operated by the control mechanism 17 is increased, and as the traveling speed of the self-propelled vehicle decreases, the speed at which the tilling device is operated by the control mechanism 17 is increased. The self-propelled vehicle 1 is connected to the vehicle speed detection device 23 so as to automatically perform pulse adjustment on the decreasing side.
As the running speed of the control mechanism 1 increases or decreases, the control mechanism 1
The posture correction speed of the tilling device 2 according to 7 is automatically increased or decelerated by a speed corresponding to the amount of change in the traveling speed of the self-propelled vehicle, and in the same direction as the direction of change in the traveling speed of the self-propelled vehicle. It has been done.

In summary, the present invention provides the tilling device operation structure of the tiller described above, which includes a device 23 for detecting the traveling speed of the self-propelled vehicle 1, and also provides the control mechanism based on information from the speed detecting device 23. 1
The present invention is characterized by being provided with a device 24 that automatically changes the operating speed of the tilling device according to No. 7 to the increasing side as the traveling speed of the self-propelled vehicle increases, and to the decreasing side as the traveling speed of the self-propelled vehicle decreases.

In other words, when the traveling speed of the self-propelled vehicle 1 is increased or decreased, the tilling device operation speed by the control mechanism 17 is adjusted to a speed corresponding to the amount of change in the traveling speed of the self-propelled vehicle, and in the direction of increase or decrease of the traveling speed of the self-propelled vehicle. Since the change is made in the same direction, when the self-propelled vehicle 1 is running at low speed, the attitude of the tilling device 2 is corrected at a low speed, which reduces the dynamic inertia when the tilling device 2 is stopped rolling. When the self-propelled vehicle 1 is traveling at high speed, the posture correction of the tilling device 2 is performed at high speed, and the delay in posture correction is less likely to occur, and the self-propelled vehicle 1 Finishing accuracy can now be improved regardless of the running speed. Moreover, since the operating speed of the tilling device is automatically changed and adjusted, there is no need for any special effort to adjust the speed, and the work can be carried out efficiently.

[Brief explanation of drawings]

The drawings show an embodiment of the tilling device operating structure of a tiller according to the present invention, in which FIG. 1 is a side view of a riding type tiller, FIG. 2 is a schematic perspective view of a link mechanism, and FIG. 3 is a block diagram. . DESCRIPTION OF SYMBOLS 1...Self-propelled vehicle, 2...Plowing device, 17...Control mechanism, 23...Speed detection device, 24...Speed change operation device.

Claims (1)

[Claims] 1. A tilling device operating structure for a tiller, which is provided with a control mechanism 17 that performs rolling operation of the tilling device 2 relative to a self-propelled vehicle so as to maintain the ground attitude of the tilling device 2 constant or almost constant. Running car 1
A device 23 for detecting the running speed of the vehicle is provided, and
Based on the information from the speed detection device 23, the control mechanism 17 automatically changes the tilling device operation speed to the increasing side as the traveling speed of the self-propelled vehicle increases, and to the decreasing side as the traveling speed of the self-propelled vehicle decreases. A tilling device operating structure for a tiller, characterized in that it is provided with an operating device 24.