JPH0514521B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a travel control method for a self-propelled fume-type deep cultivator in which the fume-type deep cultivator is disposed on a self-propelled cart.

<<Prior art>> Conventionally, a self-propelled cart equipped with a fume-type deep cultivator that can be raised and lowered is moved to a desired location, the fume-type deep cultivator is inserted into the soil, and compressed air is ejected into the soil. Examples of materials that use air pressure to increase soil pores and expand and soften to supply oxygen include:
The one shown in Japanese Unexamined Patent Publication No. 125801/1983 is known.

≪Problem to be solved≫ With conventional self-propelled fumarole-type deep cultivators, the self-propelled cart is stopped by the stop operation, the fumarole pipe of the fumarole-type deep cultivator is inserted into the soil by the insertion operation, and The work is carried out in one cycle: blowing out compressed air, pulling the fumarole pipe out of the soil with a pull-out operation, and activating the traveling device with a travel operation to move to the next work site.

In this case, the self-propelled cart must be completely stopped from the insertion operation to the extraction operation. In other words, if the fumarole pipe is inserted into the ground while moving due to an incorrect operation, sudden braking may cause the vehicle to fall over or the fumarole pipe may be damaged. If it moves, the fumarole pipe will be damaged. Furthermore, if the braking device is not kept in operation when working on a slope or the like, the truck will run under gravity due to the vibrations when the fume pipe is inserted and the impact from the fumes.

However, in the conventional self-propelled fumarole-type deep cultivator, the traveling operation system and the deep cultivator operating system are formed independently of each other, and cannot be operated in conjunction with each other. For this reason, after operating the traveling operation system, the deep tiller operation system must be operated, resulting in a problem that the operation becomes complicated.

<Means for Solving the Problems> The present invention enables the deep cultivator to be operated while the travel drive system is in operation, thereby reducing the burden on the operator during work. For this reason, while the deep tiller body is located lower than a predetermined ground height, the power transmission of the travel drive system is cut off regardless of the operating position of the travel-stop switching operation tool, and the braking device is placed in braking operation mode. It was designed to be maintained at

<<Operation>> In the present invention, while the deep cultivator is located lower than a predetermined ground height, the power transmission of the travel drive system is cut off regardless of the operation position of the travel-stop switching operation tool, and the braking device is activated. Therefore, during deep plowing work using the fume type deep cultivator, the driving system is completely locked by the braking device. Furthermore, even if the deep tiller starts to descend while running, it will automatically stop running when the deep tiller reaches a certain height above the ground.

≪Example≫ The drawings show an example of the method of the present invention, in which Fig. 1 is a configuration diagram showing the interlocking relationship between the traveling system and the working system, Fig. 2 is a side view of a self-propelled fumarole type deep cultivator, and Fig. 3 The figure is a plan view of a self-propelled fumarole type deep cultivator.

This fume type deep cultivator 1 includes an engine 4, a compressor 5 and a hydraulic pump 6 that are driven by the engine 4, and are arranged on a self-propelled cart 3 having a crawler type traveling device 2. The engine 4 is arranged on one side of the rear part of the self-propelled truck 3, and the hydraulic pump 6 and the control seat 7 are arranged in front of it. The compressor 5 is placed on the other side of the self-propelled vehicle 3, and the engine 4 and the compressor 5 are arranged at the rear of the self-propelled vehicle 3.
A mission device 8 is disposed between the two.

A control panel 9 is arranged in front of the control seat 7 so as to protrude forward from the truck body. Also,
A fumarole-type deep cultivation device 10 is arranged in front of the compressor 5. This fumarole type deep cultivating device 10 includes an air hammer driving type deep cultivating machine main body 11, a guide frame 12 that supports this deep cultivating machine main body 11 so as to be movable up and down.
It is composed of a lifting drive device 13. The lifting drive device 13 includes a swinging arm 14, a hydraulic cylinder 15 that operates the swinging arm 14, and a flow path switching valve 16 that controls the supply of pressure oil to the hydraulic cylinder 15.
It is made up of. Further, the control panel 9 is provided with a steering operation lever 17, a run-stop switching lever 18, and a deep tiller lifting/lowering operation lever 19.

Two release wires 20 and 21 are connected to the run-stop switching lever 18, and one release wire 20 is connected to a clutch device 24 disposed in a power transmission system 23 between the engine 4 and the transmission device 8.
The other release wire 21 is connected to the input actuation section 26 of the brake device 25 of the traveling device 2.
is connected to.

The outer wire of the release wire 20 connecting the run-stop switching lever 18 and the clutch device 24 is fixed to the swing arm 27. The swing arm 27 is pivotally supported such that its longitudinal center is the center of swing, and the outer wire of the release wire 20 is fixed to one end of the swing arm 27.
An input operating section 26 of the brake device 25 is connected to the other end of the swinging arm 27 by a connecting wire 28 . Further, the connecting wire fixed side end of the swinging arm 27 and the swinging arm 14 of the elevating device 13 are connected by a release wire 29.

The swing arm 27 is elastically biased toward the brake activation side by a tension spring 30, and the clutch device 24 is elastically biased toward the clutch disconnection side by a return spring 31.

The deep cultivator lifting/lowering operation lever 19 has a flow path switching valve 1.
two release wires 32 for operating 6,
33 is connected to a release wire 35 for operating a flow path opening/closing valve 34 arranged in an air supply path to the air hammer section of the deep cultivator main body 11.

In FIG. 1, reference numeral 36 is an operation pedal for blowing out high-pressure air stored in the air tank of the deep cultivator main body 11.

Next, the operation of the apparatus constructed as described above will be explained.

In the running state when the running/stopping switching lever 18 is tilted to the right side in the figure, the movement of the lever 19 is transmitted to the clutch device 24 and the brake device 25 via the release wires 20 and 21, and the running drive system is placed in a power transmission state. At the same time, the brake device 25 is released from control. In this running state, when the deep cultivator lift operation lever 19 is tilted to the right from the neutral position shown in the figure, the movement of the lever 19 is transmitted to the flow path switching valve 16 via the release wires 32 and 33, and the pressure oil The flow path of hydraulic cylinder 1 is switched.
5 is contracted and moves the deep cultivator main body 11 downward. At this time, since the air hammer circuit's passage opening/closing valve 34 is also interlocked and connected to the deep tiller lifting/lowering operating lever 19, the passage opening/closing valve 34 is switched and the air hammer is also operated.

When the deep cultivator main body 11 starts to descend, the swinging arm 14 also swings down, so the tensile force of the release wire 29 decreases and the tension spring 3
The swinging arm 27 swings counterclockwise with a spring force of 0. This swinging of the swinging arm 27 causes the clutch device 24 to
At the same time, the brake device 25 is switched to a braking state. After the brake device enters the braking state, the amount of displacement accompanying the swinging downward movement of the swing arm 14 is absorbed by the inner wire of the release wire 29 being bent.

Therefore, the self-propelled cart 3 stops running and the deep tiller main body 11 is driven into the soil in a braked state. At this time, the travel-stop operation lever 18 remains in the travel position.

Next, after the compressed air blowout operation, when the deep cultivator lift operation lever 19 is tilted to the left from the neutral position shown in the figure, the movement of the lever 19 is transmitted to the flow path switching valve 16 via the release wires 32 and 33. The flow path of the pressure oil is switched, and the hydraulic cylinder 15
is extended and moves the deep cultivator main body 11 upward. The deep tiller main body 11 starts to rise, and the deep tiller main body 1
The release wire 29 operates to take up the slack in the inner wire of the release wire 29 until the deep tiller body 11 rises to a certain height above the ground. The upward movement of the swing arm 14 and the release wire 29
The force is transmitted to the swing arm 27 via the swing arm 27, and the swing arm 27 swings clockwise against the tension spring 30. This swinging of the swinging arm 27 switches the clutch device 24 to the power transmission state, switches the brake device 25 to the brake release state, and puts the self-propelled truck 3 into the running state.

4 to 6 are system diagrams showing another embodiment of the present invention, and what is shown in FIG. 4 is a clutch device 2.
In addition to using a hydraulic multi-plate clutch as 4,
A hydraulic cylinder is used as the actuator of the brake device 25, and the travel control valve 38, which is a three-port two-position switching valve, is arranged in the pressure oil supply path 37 to both the hydraulic devices 24 and 25 to operate the travel-stop switching lever 18. A position detecting device 39 consisting of a two-port, two-position switching valve is arranged at the upper end of the lifting area of the deep tiller main body 11, and this position detecting device 39 can be switched by the deep cultivator main body 11. The position detector 39 is connected to a pressure oil supply path 37 between both the devices 24, 25 and the travel control valve 38. Then, by operating the running/stopping switching lever 17 to the running state shown in the figure, the control valve 3
8 enters a pressurized oil supply state, puts the clutch device 24 in a power transmission state, and maintains the brake device 25 in a controlled release state. On the other hand, the position detector 39
The pressure oil is disconnected only when the deep tiller main body 11 is located above a certain height, and when the deep tiller main body 11 is located lower than a predetermined height, the clutch device 24 and brake are disconnected. device 25
It is designed to drain the pressure oil from the

As a result, when the deep cultivator main body 11 becomes lower than a predetermined height, the clutch is disengaged, the brake is activated, and the self-propelled cart 3 is maintained in a stopped state. Conversely, when the deep cultivator main body 11 is located higher than the predetermined ground height, the position detection device 39 is in the flow path disconnection position, so pressure oil is supplied to the clutch device 24 and the brake device 25, and the automatic The carriage 3 is now in a running state.

The one shown in FIG. 5 is electrically actuated, and uses an electromagnetic clutch as the clutch device 24 and a solenoid as the actuator of the brake device 25, with a power supply line 40 to both electromagnetic actuators. A running/stopping switch 41 and a relay switch 42 are arranged in series. on the other hand,
The deep cultivator main body 11 has an electric motor 43 that can rotate in forward and reverse directions.
The electric motor 4
3 is configured to be controlled by a lifting/lowering operation switch 44. And relay switch 4
A limit switch 45 is disposed in the excitation circuit (relay circuit) of No. 2, and the position of the deep tiller main body 11 is detected by the limit switch 45. The power source in this circuit is the engine 4
It is composed of a generator 46 driven by.

When the deep cultivator main body 11 is in a predetermined position,
Since the limit switch 45 disposed in the relay circuit is in the connected state, when the run-stop switch 41 is manually operated in this state, the relay circuit is energized, the relay switch 42 is switched to the energized state, and the clutch device 24 is turned on. The brake device 25 is switched to the power transmission state, and the brake device 25 is switched to the brake release state, so that the self-propelled trolley 3 can travel. In this running state, by operating the lift operation switch 44 to the deep cultivator lowering side, the electric motor 43 rotates normally, and the deep cultivator main body 11 starts to descend. When the deep cultivator main body 11 starts to descend, the limit switch 45 is turned off, the relay switch 42 is turned off, the excitation of the clutch device 24 and the brake device 25 is stopped, and the clutch device 24 is in the transmission cutoff state, and the brake device 25 is Switching to the control state, the self-propelled trolley 3 stops traveling. At this time, the running/stopping switch 41 is maintained in the circuit connected state.

After performing deep plowing work by blowing out compressed air, when the lift operation switch 44 is switched to the deep tiller extraction side, the electric motor 43 is operated in reverse, and the deep tiller main body 11 is raised to a predetermined position. When the ground clearance is reached, the position detection limit switch 45
becomes the switch on state, and relay switch 4
4 is switched to the circuit connected state, the clutch device 24 is switched to the power transmission state, and the brake device 25 is switched to the brake release state, and the self-propelled trolley 3 is put into the running state.

FIG. 6 shows an example of the application to a hydraulically driven self-propelled trolley 3, in which the vehicle runs in a pressure oil passage 47 between a hydraulic pump 6 and a traveling device 2 consisting of a hydraulic motor.
Travel control valve 3 operated by stop switching lever 18
8, and a steering control valve 4 operated by a steering lever 17.
8 are arranged in this order, and a flow path switching valve 49 is arranged between both control valves 38 and 48, which switches in conjunction with the elevation of the deep cultivator 11.
8, the deep cultivator elevation control oil path 50 is branched from between
A lift control valve 16 is disposed in the deep tiller lift control oil passage 50, and a position detection cylinder 39 is arranged in the lift area of the deep tiller main body 11.

<<Effects>> As described above, in the present invention, since the running state of the self-propelled cart is controlled in conjunction with the lifting and lowering operations of the fume-type deep cultivator, the desired result can be achieved simply by lifting and lowering the deep cultivator. You can cultivate areas. This makes it possible to simplify the operating procedure for deep plowing work, and to improve the operability of the self-propelled fumarole type deep cultivator.

Moreover, since the self-propelled trolley is designed to stop when the deep tiller is lower than a predetermined ground clearance, even if the deep tiller is raised or lowered while it is running, the vehicle may fall over or the deep tiller's fumarole pipe may be damaged. It does not damage the product and is highly safe.

[Brief explanation of the drawing]

The drawings show an example of an apparatus for carrying out the method of the present invention, and Fig. 1 is a configuration diagram showing the interlocking relationship between the traveling system and the working system, Fig. 2 is a side view of a self-propelled blow-hole type deep cultivator, and Fig. 3 is a The plan view of FIG. 2 and FIGS. 4 to 6 are views corresponding to FIG. 1 showing different embodiments, respectively. 3...Self-propelled trolley, 7...Seat, 9...Operation panel,
DESCRIPTION OF SYMBOLS 11... Deep cultivator main body, 13... 11 elevation drive device, 18... Running-stop switching operating tool, 19... Elevating operating tool, 23... Traveling drive system, 25... Braking device.

Claims (1)

[Scope of Claims] 1. The self-propelled trolley 3 supports the fume-type deep cultivator main body 11 so as to be movable up and down, and the seat 7 is arranged on the self-propelled trolley 3.
An operation panel 9 is disposed on the front side of the machine, and the operation panel 9 includes a run-stop switching operation tool 18 that controls the traveling drive system 23 of the self-propelled cart 3 and a lifting operation tool 19 that controls the lifting drive device 13 of the deep tiller main body 11. In the self-propelled fumarole type deep cultivator, the deep cultivator main body 1 is
While the deep cultivator body 11 is located lower than the predetermined ground height due to the vertical movement of the drive system 1, the drive system 2
In addition to cutting off the power transmission of 3, the braking device 25
A traveling control method for a self-propelled fumarole type deep cultivator, characterized in that the machine is maintained in a braking operating state.