JPH0626100Y2 - Lifting control device for digging work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a lifting control device for a digging work machine for harvesting root vegetables such as sweet potato, potato, konjac potato and the like.

[Problems to be Solved by Conventional Techniques and Inventions] In general, when harvesting this root vegetable, a digging work machine may be attached to a towing work vehicle such as an agricultural tractor to perform harvesting work. And if this is the one that the operator accompanies to the digging work machine to assist the harvesting work, the digging depth by the digging work machine may change in depth due to unevenness of the field, etc. In such a case, the operator has to move to the traveling vehicle side to adjust the height of the working machine, which is disadvantageous in that the work is extremely complicated, troublesome and inferior in workability.

[Means for Solving the Problems] The present invention has been made in view of the above circumstances, and was devised with the object of providing an elevation control device for a digging work machine that can eliminate these drawbacks. When excavating rooting vegetables instead of tilling implements on a traveling machine that controls the working depth based on the detection of the tilt angle of the rear cover On the other hand, the coupler provided on the wiring of the operation switch is connected to the coupler on the traveling machine body which is connected to the wiring from the control unit for performing control such as plowing depth control while operating the operation switch. It is characterized in that the work machine is configured to be lifted and lowered.

Further, according to the present invention, with this configuration, the operator can adjust the height of the digging work machine while attending to the digging work machine.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of an agricultural tractor which is a towing work vehicle, and various working machines such as a rotary tiller working machine are selectively attached to a lifting link mechanism 2 provided at a rear portion of the traveling machine body to diversify. However, when the rotary tiller 3 is attached, the inclination angle (amount of swing) of the rear cover 4 of the tiller 3 is attached.
Therefore, an automatic plowing depth control mechanism for detecting the plowing depth and automatically controlling the plowing depth based on the detected plowing depth is provided.
That is, the rear cover 4 is linked to the tillage detecting sensor 6 via the link mechanism 5, and the tilling depth is detected based on the inclination angle of the rear cover 4. A coupler 8 is provided at the tip of a lead wire 7 extending from the tillage detecting sensor 6.
The detection signal is input to the control unit 9 by connecting to the coupler 11 provided at the tip of the lead wire 10 extending from the control unit 9 provided on the side.
Compares the input detected value with the set value set by the working depth setter 12, outputs a control command to a hydraulic valve control solenoid (not shown), and swings the lift arm 1a. Dynamic control is performed so that the tilling depth of the tiller working machine 3 is automatically controlled to reach the set depth.

On the other hand, 13 is a root vegetable digging work machine. The digging work machine 13 has a digging blade 14 at the front part, and the digging blade 14 sifts off root vegetables and the mud excavated together. Meanwhile, a carrier 15 for lifting and conveying in an inclined shape, a seat 16 for an operator to sit on, and a container 1 for accommodating root vegetables.
7 and traveling wheels 18, etc., a switch box 19 is provided on the frame 13a of the excavation work machine 13. The coupler 20 provided at the tip of the lead wire 20a extending from the switch box 19 is configured to be connectable to the coupler 11 on the traveling machine body side. Further, the switch box 19 is provided with an ascending switch 21 and a descending switch 22, and a signal when these switches 21, 22 are pushed is input to the control section 9, but this input signal is
When the switch 21 for push is operated, the plowing depth detection sensor 6 is set to be the same as the signal in the case of the deep plowing detection state, and when the switch 22 for lowering is pushed, the signal is reversed. The plowing depth detection sensor 6 is set to be the same as the signal in the case of the shallow plowing detection state, and thus the control unit 9 raises the work implement 13 when the push operation signal of the raising switch 21 is input. To output the control command, and conversely, when the push operation signal of the lowering switch 22 is input, the control command is output to control the lowering of the working machine 13, and thus the manual operation by the switch operation is performed. It is configured so that the machine can be raised and lowered.

In the embodiment of the present invention configured as described above, either the cultivating work or the digging work can be arbitrarily performed by selectively attaching the cultivating work machine 3 or the digging work machine 13 to the traveling machine body 1. it can. When the tilling implement 3 is attached, the automatic plowing depth control is performed as described above based on the detection of the tilt angle (swing angle) of the rear cover 4.

On the other hand, when the digging work machine 13 is attached, the coupler 20 is connected to the coupler 11 on the traveling machine body side. Thus, the operator can manually control the lifting and lowering of the working machine 13 by pressing the switches 21 and 22 in the work posture of sitting on the seat 16 of the working machine 13. .

Thus, in the present invention, the operator 13 operates the work machine 1
When the operator is required to raise and lower the working machine 13 when attending the vehicle 3, it is possible to perform the lifting control of the working machine 13 without having to transfer to the traveling machine body 1 as in the conventional case, resulting in remarkable workability improvement. In this case, the coupler 20 on the switch box 19 side is connected to the machine side coupler 11 for connecting the coupler 8 on the tilling depth detection sensor 6 side for controlling the tilling depth of the tilling implement 3. It suffices to connect them. Therefore, when the working machine is replaced, the members such as the lead wire 10 and the coupler 11 (including the control unit 9 of course) need not be replaced on the traveling machine body side and can be used as they are. .

Moreover, in this device, the signals from the switches 21 and 22 are set to be the same as the signals when the tilling depth detecting sensor 6 detects the deep tilling detecting state and the shallow tilling detecting state, so that the tilling control is performed. In the case where the control unit 9 has a small capacity and an input port dedicated to the excavation work cannot be secured, it is possible to perform manual control while leaving the working machine 13 as it is, by using the line for maintenance as it is. However, there is no problem, and even if the control unit 9 does not have the specific control system for the excavation work machine 13 loaded, it can be used as it is, and therefore, it can be used without problems even for existing ones. .

[Advantages] In short, since the present invention is configured as described above, when controlling the height of the digging work machine, the operator does not have to transfer to the traveling machine as before, It is possible to control the height of the working machine while sitting in the machine. Moreover, in this case, when the working machine is a tilling machine, the coupler on the lifting switch side may be connected to the machine side coupler that is connected to the control unit that performs control such as plowing depth control. When exchanging a plowing work machine with a digging work machine, it is not necessary to replace the couplers and other member devices such as wiring connected to the coupler, and the existing equipment can be used to control the lifting and lowering of the digging work machine. It has the advantage that it can be done.

[Brief description of drawings]

The drawings show an embodiment of a lifting control device for a digging work machine according to the present invention. FIG. 1 is a side view of a traveling machine body when a cultivating work machine is attached, and FIG. 2 is a digging machine. It is a principal part side view of a traveling body which shows the case where a picking implement is attached. In the figure, 1 is a traveling machine body, 3 is a tilling work machine, 6 is a tilling depth detection sensor, 8 and 11 are couplers, 13 is a digging work machine, 20 is a coupler, and 21 and 22 are operation switches.

Claims (1)

[Scope of utility model registration request] 1. A digging work for attaching a root vegetable digging work machine in place of the cultivating work machine to a traveling machine body in which the tilling depth control of the cultivating work machine is performed based on the detection of the tilt angle of the rear cover. While the machine is provided with an operation switch for raising and lowering the work machine, the coupler provided in the wiring of the operation switch is connected to the coupler on the traveling machine side connected to the wiring from the control unit that controls the plowing depth control and the like. A lifting control device for a digging work machine, wherein the work machine is moved up and down by operating an operation switch.