JPH0716778Y2 - Mobile excavator moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a moving device for an on-vehicle excavator.

(Prior Art) An on-vehicle excavator is composed of a vehicle 1 and a hydraulically driven excavator 2 mounted on the vehicle 1 so as to be freely rotatable, as shown in FIG. The vehicle 1 is provided with a traveling engine 3 and is configured to transmit the output of the traveling engine 3 to the drive wheels 6 of the vehicle 1 through a friction clutch 4 and a transmission 5 having a neutral position in this order. Therefore, a driver in the vehicle cab 7 can travel the vehicle 1 by disengaging the friction clutch 4, shifting the transmission 5 and operating a steering wheel (not shown). I am configuring. This type of vehicle is commonly known as a truck carrier. In the hydraulically driven excavator 2, hydraulic pressure generated by a hydraulic pressure generator 10 described later is supplied to each hydraulic actuator via a hydraulic control valve 9 which is provided at an appropriate position of the excavator 2 and operated from a driver's seat 8 of the excavator 2. It is designed to be driven by being directed to.
Such an excavator 2 is already known. The hydraulic pressure generator 10 includes a power source 11 (an engine or a motor driven by power supply from an external power source) different from the vehicle running engine 3 mounted on the vehicle 1 or the excavator 2 part. The high-pressure oil is generated by the power of the power source 11. More specifically, the hydraulic pressure generator 10 includes a hydraulic pump and an oil tank driven by the power of the power source 11. In the example of FIG. 1, the hydraulic pressure generator 10 is mounted on the vehicle 1. In this case, the hydraulic pressure generated by the hydraulic pressure generator 10 is supplied to the hydraulic control valve 9 of the excavator 2 via the rotary joint 12. Further, the return oil to the hydraulic pressure generator 10 is designed to flow back from the hydraulic pressure control valve 9 through the rotary joint 12.

In the figure, 13 is a hydraulically driven outrigger provided at the front, rear, left and right positions of the vehicle 1, and these outriggers 13 are
The control oil of the outrigger operation valve incorporated in the hydraulic control valve 9 allows the grounding / storing operation.

The oil pressure generating device 10 is provided independently of the traveling engine 3 because the prime mover 11 that is optimal for driving the excavator 2 is set regardless of the vehicle traveling engine 3 To try to improve energy efficiency, or
This is to reduce noise during excavation work by selecting an electric motor for the prime mover 11 of the hydraulic pressure generator 10 or enclosing the prime mover 11 with a soundproof cover.

In the vehicle-mounted excavator configured as described above, after the driver rides in the vehicle operating room 7 and moves to the excavation work site, the driver gets in the driver 8 of the excavator 2 and grounds the outrigger 13 to perform excavation work. Is what you do.

(Problems of Prior Art) In this type of vehicle-mounted excavator, it is necessary to move the vehicle-mounted excavator in the front-rear direction during excavation work. In such a case, the driver moves from the driver's seat 8 of the excavator 2 to the vehicle 1
To the operator's cab 7 to move the vehicle forward or backward, or while the driver is on the driver's seat 8 of the excavator 2, push and pull the ground with the bucket portion of the excavator 2 and use the reaction force to perform on-vehicle excavation. I was trying to move the machine forward or backward. In any case, it goes without saying that the outrigger 13 is stored in advance.

When the vehicle-mounted excavator is moved forward or backward as in the former case, smooth movement can be achieved, but the driver must move between the driver's seat 8 of the excavator and the cab 7 of the vehicle 1 each time. However, there is a problem in that the efficiency of the excavation work is reduced. Further, when the vehicle-mounted excavator is moved forward or backward as in the latter case, the driver remains in the driver's seat of the excavator 2. Although the on-vehicle excavator can be moved forward or backward, there is a problem that it cannot move smoothly.

The present invention is a vehicle-mounted excavator that enables a driver to smoothly move forward or backward while the driver is located in the driver's seat 8 of the excavator 2 using the hydraulic pressure generated by the hydraulic pressure generator 10. SUMMARY OF THE INVENTION An object of the present invention is to provide a moving device for a machine, thereby solving the above-mentioned problems of the prior art.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the moving device for a vehicle-mounted excavator according to the present invention is interlocked with the input side of a transmission mission of a vehicle of the conventional vehicle-mounted excavator described above. A branch shaft is attached as much as possible, and a hydraulic motor is attached to this branch shaft, and the hydraulic pressure generated by the hydraulic pressure generator is supplied to a suitable location of the vehicle-mounted excavator via a hydraulic switching valve operated from the driver's seat of the excavator. To the hydraulic motor and control the drive and stop of the hydraulic motor by operating the hydraulic switching valve.
Further, a holding mechanism for holding the friction clutch of the vehicle in the disengaged position is attached, the shift transmission is set to an appropriate shift position, the branch shaft is interlocked with the input side of the shift mission, and the holding is performed. By holding the friction clutch in the disengaged position by a mechanism, the hydraulic motor and the drive wheels of the vehicle are brought into an interlocking connection state separated from the vehicle running engine, and then the hydraulic motor is driven to drive the hydraulic motor. Is configured to drive the drive wheels of the vehicle.

(Operation) According to the above configuration, by simply adding a simple device to the conventional vehicle-mounted excavator, the generated hydraulic pressure of the hydraulic pressure generator 10 is used,
The on-vehicle excavator can be moved forward or backward from the driver's seat 8 of the excavator 2. Moreover, since the movement is performed by the rotation of the hydraulic motor, it can be performed smoothly.

(Embodiment) An embodiment of a moving device for an on-vehicle excavator according to the present invention will be described with reference to FIGS. 2 and 3.

Since the moving device of the present invention is used in the vehicle-mounted excavator shown in FIG. 1, the configuration of the vehicle-mounted excavator is as described in FIG. 1 as it is.

In FIG. 2, reference numeral 14 is a branch shaft attached to the input side of the transmission 5 of the vehicle 1 so as to be interlockable. When the vehicle 1 is a truck carrier, a power take-off output shaft that can be attached to the transmission mission 5 of the truck carrier is used. Reference numeral 15 is a lever for operating interlocking connection and disconnection of the branch shaft 14 to the input side of the transmission 5 for transmission, and the lever 15 can be operated from within the operator's cab 7. Reference numeral 16 is a hydraulic motor connected to the branch shaft 14. Reference numeral 17 denotes a four-way, three-position hydraulic switching valve that is provided at an appropriate position on the excavator 2 and is operated from the driver's seat 8 of the excavator 2. In this embodiment, the hydraulic switching valve 17 has its pump port connected to the carry-over oil passage of the hydraulic control valve 9 and its tank port connected to the return oil passage of the hydraulic control valve 9. The pair of control ports of the hydraulic switching valve 17 are
It is connected to the hydraulic motor 16 via a pair of oil passages 18 and 19 passing through the rotary joint 12. Hydraulic motor
16 is stopped at the neutral position of the hydraulic pressure switching valve 17, and when operated from the neutral position to one side, it is driven in the forward direction, and when operated to the other side, it is driven in the reverse direction. 20
Is a holding mechanism for holding the friction clutch 4 of the vehicle 1 in the disengaged position, and in this embodiment, is constituted by an engaging tool for locking the clutch pedal 22 equipped in the driver's cab 7 of the vehicle 1 at the depressed position. is doing.

Next, the operation will be described. The traveling movement using the vehicle traveling engine 3 and the excavation work using the hydraulic pressure generated by the hydraulic pressure generator 10 are performed in the same manner as in the conventional vehicle-mounted excavator.
The driver gets into the driver's seat 8 of the excavator 2 and the hydraulic control valve 9
A case will be described in which the vehicle-mounted excavator is moved forward or backward while the excavation work is being performed using the hydraulic pressure generated by the hydraulic pressure generator 10 by operating. When such a situation is expected, the driver operates the holding mechanism 20 in advance to hold the clutch 4 in the disengaged position, and operates the lever 15 to move the branch shaft 14 to the transmission mission 5 for shifting. Is connected to the input shaft side, and the transmission 5 for shifting is further shifted to an appropriate forward position or reverse position. As a result, the hydraulic motor 16 and the drive wheels 6 of the vehicle 1 are directly connected and are disconnected from the vehicle running engine 3. When attempting to move the vehicle-mounted excavator forward or backward, the driver must
After storing, the hydraulic control valve 17 is operated and the hydraulic motor 16
It is possible to move the vehicle-mounted excavator forward or backward by driving the vehicle in the forward or reverse direction with the hydraulic pressure generated by the hydraulic pressure generator 10. Therefore, the driver can move the vehicle-mounted excavator while riding in the driver's seat 8 of the excavator 2, and since the movement is performed by the hydraulic motor 16, the movement is extremely smooth. It can be achieved. Incidentally, if the operation amount of the hydraulic pressure switching valve 17 is adjusted, the moving speed can be arbitrarily adjusted, which is more convenient.

In the above embodiment, the hydraulic pressure switching valve 17 is provided on the excavator 2 after the hydraulic control valve 9, but it is provided on the vehicle 1 side as shown in FIG. 3, and the hydraulic control valve 17 is provided on the driver's seat of the excavator 2. It is needless to say that the control can be performed remotely from 8 by an electric circuit passing through the rotary joint 12. Also, the fourth
As shown in the figure, a pair of oil passages 9b connecting a pair of control ports of a four-way three-position hydraulic switching valve 9a for outrigger control of the hydraulic control valve 9 to an outrigger 13 of the vehicle 1 side via a rotary joint 12, By inserting a four-port two-position hydraulic switching valve 21 in the 9c and switching the oil passage switching valve 21 with a switch 22 provided in the driver's seat 8 of the excavator 2,
Of course, the four-way three-position hydraulic switching valve 9a for operating the outrigger may be replaced with the hydraulic switching valve 17.

Further, in the above embodiment, the hydraulic pressure generator 10 is installed in the vehicle 1.
Although it is attached to the excavator 2, it may be provided on the excavator 2 side. Further, the hydraulic pressure generator 10 may be prepared separately from the vehicle-mounted excavator, and may be connected to a pipe appropriately from a hydraulic hose.

(Effect) The moving device for a vehicle-mounted excavator according to the present invention configured and operated as described above smoothly moves the vehicle-mounted excavator from the driver's seat of the excavator simply by adding a simple configuration to the conventional vehicle-mounted excavator. Since it can be moved, there is an effect that the efficiency of the excavation work of the vehicle-mounted excavator can be significantly improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional vehicle-mounted excavator, FIG. 2 is an explanatory diagram of an embodiment of a moving position of the vehicle-mounted excavator of the present invention, and FIG.
FIG. 4 and FIG. 4 are explanatory views of other embodiments. 1; Vehicle, 2; Excavator, 4; Friction clutch, 5; Transmission mission,
6; drive wheel, 8; driver's seat, 10; hydraulic pressure generator, 14; branch shaft, 16; hydraulic motor, 17; hydraulic switching valve, 20; holding mechanism

Claims (1)

[Scope of utility model registration request] 1. A vehicle configured to transmit the output of a vehicle running engine to a drive wheel of the vehicle through a friction clutch and a speed change mission having a neutral position in this order, and a hydraulic pressure mounted on the vehicle. A vehicle-mounted excavator including a drive-type excavator, and in particular, a hydraulic pressure for driving the excavator, which is mounted on the vehicle-mounted excavator and includes a power source different from the vehicle running engine, or In a structure that can be driven by a hydraulic pressure generated by a hydraulic pressure generator prepared separately from an on-vehicle excavator, a branch shaft is attached to the input side of a transmission mission of the vehicle so as to be interlockable and a hydraulic motor is attached to the branch shaft. The hydraulic pressure generated by the hydraulic pressure generator is guided to the hydraulic motor via a hydraulic pressure switching valve that is provided at an appropriate position of the vehicle-mounted excavator and operated from the driver's seat of the excavator, and the hydraulic pressure is switched. The driving and stopping of the hydraulic motor are controlled by the operation of, and a holding mechanism for holding the friction clutch of the vehicle in the disengaged position is attached, and the transmission for transmission is set to an appropriate shift position. Is linked to the input side of the transmission for gear shifting, and the friction clutch is held in the disengaged position by the holding mechanism, so that the hydraulic motor and the drive wheels of the vehicle are linked to the vehicle running engine. age,
A moving device for an on-vehicle excavator, characterized in that the hydraulic motor is driven to drive the driving wheels of the vehicle.