JP3117054B2 - Crusher drive control device for self-propelled crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for driving and controlling a crusher of a mobile crusher for crushing wood pieces, concrete pieces and the like generated at the time of building demolition.

[0002]

2. Description of the Related Art As a self-propelled crusher, there is Japanese Utility Model Laid-Open No.
As shown in Japanese Patent No. 744, a hopper, a crusher, and a conveyor are attached to a vehicle body provided with a traveling body, a crushed object put into the hopper is crushed by a crusher, and the crushed pieces are discharged out of the vehicle body by a conveyor. Things are known.

[0003]

A crusher used in such a mobile crusher has a housing in which a fixed jaw and a movable jaw are provided, and the movable jaw is reciprocated toward the fixed jaw to crush the object to be crushed. Wood pieces, concrete pieces and the like generated during the dismantling of the building can be crushed, but large and hard crushable objects such as large reinforcing bars and wood chips cannot be formed, and the crushing machine stops by being stuck between the fixed jaw and the movable jaw.

[0004] As described above, when the object to be crushed is caught between the fixed jaw and the movable jaw of the crusher and the crusher is stopped, the movable jaw is stopped with the movable jaw moved toward the fixed jaw. A very large force is required to take out the crushed material that has been caught, and the taking out is very troublesome.

Particularly, in the case of a mobile crusher, a running body, a belt conveyor, and the like are provided at the exit side of the crusher, so that there is no space for taking out the crusher under the crusher. It is very troublesome to take out.

Accordingly, an object of the present invention is to provide a crusher drive control device for a self-propelled crusher which can solve the above-mentioned problems.

[0007]

A vehicle body 1 having a traveling body 2 is provided.
A crusher 3, a hopper 4, and a conveyor 9 are attached to each other, and the crushed pieces are discharged to the outside of the vehicle body 1 by the conveyor 9. The crusher 3 is fixed by a fixed jaw 6 and a crusher hydraulic motor 12. The crusher switching valve 11, which is constituted by a movable jaw 7 reciprocated toward 6 and supplies pressurized oil to the crusher hydraulic motor 12, is moved from a neutral position by pilot pressure oil from an electromagnetic pilot valve 13 from a neutral position. The switch 20 is switched between the power supply 18 and the second solenoid 16 for setting the pilot valve 13 of the pilot valve 13 to the position where the crusher switching valve 11 is set to the reverse position. Crusher drive control unit for the self-propelled crusher provided.

[0008]

[Operation] Since the crusher hydraulic motor 12 can be reversed only when the switch 22 is operated, the crusher hydraulic motor 12 can be slightly reversed by operating the switch 22 for a very short time, and the movable jaw 7 of the crusher 3 can be moved. The crushed object that has moved by a small stroke in the direction away from the fixed jaw 6 can be easily taken out.

[0009]

[Embodiment] As shown in FIG. 1, a traveling body 2 is mounted on both lower sides of a vehicle body 1, and a crusher 3 and a hopper 4 are mounted on the vehicle body 1.
Is provided with a fixed jaw 6 and a movable jaw 7, and the movable jaw 7 is reciprocated toward the fixed jaw 6 so that the material to be crushed a
The hopper 4 is provided with a movable bottom plate 8, and the movable bottom plate 8 is reciprocated to supply the crushed material a to the crusher 3. A conveyor 9 is mounted between the pair of traveling bodies 2 in the vehicle body 1 so as to discharge crushed pieces b to the outside of the vehicle body 1.

FIG. 2 is a drive circuit diagram showing the main hydraulic pump 1
The discharge pressure oil of 0 is controlled to be supplied to the crusher hydraulic motor 12 by the crusher switching valve 11, and the crusher switching valve 11 is always maintained at the neutral position a, and the auxiliary hydraulic pump 14 is supplied from the pilot valve 13. The forward rotation position b and the reverse rotation position c are switched by the discharge pressure oil, and the pilot valve 13 is always held at the middle position d. When the first and second solenoids 15 and 16 are energized, the forward rotation position e and the reverse rotation position are set. The position is switched to the position f.

The first solenoid 15 is connected to a power source 18 via a relay 17, and the relay 17 is connected to a start switch 1
9, the second solenoid 16 is connected to a power supply 18 via a push-button type switch 20, and this switch 20 is always turned off by a spring 21 and turned on by being pressed against the spring 21.

Next, the operation will be described. By operating the start switch 19 to turn on the relay 17, the first solenoid 1
5, the pilot valve 13 is brought to the forward rotation position e, and the discharge pressure oil of the auxiliary hydraulic pump 14 is supplied to the crusher switching valve 11
Is supplied to the first pressure receiving portion 11a to be in the normal rotation position b. Thereby, the discharge pressure oil of the main hydraulic pump 10 is supplied to the normal rotation port 12a of the crusher hydraulic motor 12 to rotate forward, and the movable jaw 7 of the crusher 3 reciprocates to crush the crushed material.

When the switch 20 is turned on, the second solenoid 16 is energized and the pilot valve 11 is brought to the reverse rotation position f, and the pressure oil discharged from the auxiliary hydraulic pump 14 is supplied to the crusher switching valve 1.
The first pressure receiving portion 11b is supplied to the first second pressure receiving portion 11b to be in the reverse rotation position c.
Thereby, the discharge pressure oil of the main hydraulic pump 10 is supplied to the reverse rotation port 12b of the crusher hydraulic motor 12, and reversely rotates.
The movable jaw 7 of the crusher 3 moves slightly in a direction away from the fixed jaw 6.

Therefore, the fixed jaw 6 and the movable jaw 7
When the object to be crushed is caught between the
To stop the energization of the first solenoid 15, and by turning on the switch 20 several times as described above, the movable jaw 7 slightly moves in a direction away from the fixed jaw 6, so that the object to be crushed is under its own weight. Can be dropped or taken out with a small force.

FIG. 3 shows a second embodiment, in which a timer 22 is provided between the switch 20 and the second solenoid 16,
As a result, when the switch 20 is turned on, the second solenoid 16 is energized for a certain period of time, so that the movable jaw 7 moves in a direction away from the fixed jaw 6 by a predetermined stroke.

[0016]

Since the crusher hydraulic motor 12 can be reversed only when the switch 22 is operated, the crusher hydraulic motor 12 can be slightly reversed by operating the switch 22 for a very short time, and the movable jaw 7 of the crusher 3 can be rotated. Is moved by a small stroke in a direction away from the fixed jaw 6, and the crushed object that has caught in can be easily taken out.

[Brief description of the drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is a drive hydraulic circuit diagram of the crusher.

FIG. 3 is a drive hydraulic circuit diagram of the crusher.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Running body, 3 ... Crusher, 4 ... Hopper, 6
... fixed jaw, 7 ... movable jaw, 9 ... belt conveyor,
DESCRIPTION OF SYMBOLS 10 ... Main hydraulic pump, 11 ... Crusher switching valve, 12 ... Crusher hydraulic motor, 13 ... Pilot valve, 14 ... Auxiliary hydraulic pump, 15 ... 1st solenoid, 16 ... 2nd solenoid, 18 ... Power supply, 20 ... Switch , 22... Timer.

──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Motoki Kurohara 3-1-1 Ueno, Hirakata-shi, Osaka Komatsu Ltd. Osaka Plant (58) Field surveyed (Int. Cl. ⁷ , DB name) B02C 1 / 02-1/10 B02C 19/00-25/00

Claims (2)

(57) [Claims] 1. A crusher 3, a hopper 4 and a conveyor 9 are attached to a vehicle body 1 provided with a traveling body
The crusher 3 is fixed to the fixed jaw 6 and the crusher hydraulic motor 12
Movable jaw 7 reciprocated toward fixed jaw 6 by
The crusher switching valve 11 that supplies pressurized oil to the crusher hydraulic motor 12 can be switched from a neutral position to a normal rotation position and a reverse rotation position by pilot pressure oil from an electromagnetic pilot valve 13, A self-propelled crusher, wherein a switch 20 is provided between the second solenoid 16 and a power supply 18 for setting the pilot valve 13 in the pilot valve 13 to a position where the crusher switching valve 11 is in a reverse position. Machine crusher drive control device. 2. The switch 20 and the second solenoid 16
2. The crusher drive control device for a mobile crusher according to claim 1, further comprising a timer 22 provided between the crusher and the timer.