JPH10219724A - Attachment for working of construction vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct working without moving a car body within the reach of an operating device by connecting a slewing mechanism to a mounting bracket rotatably left and right in an attachment for a car, which has a supporting section consisting of the mounting bracket and the slewing mechanism and in which the mounting bracket is installed to the operating device of the construction vehicle vertically rotatably. SOLUTION: The construction vehicle 10 has a lower travelling body 17, a revolving superstructure 18 and an operating device 11. The operating device 11 consists of a boom 19 and an arm 12, and a bucket is mounted at the front end section of the arm 12 in normal excavation works, but the intermediate sections of crushing arms 6 pinching and crushing concrete, etc., are borne rotatably at the front end section of a main frame 5 in normal crushing works, and a hydraulic cylinder 7 for operating the arms is set up between the rear end sections of the crushing arms 6. A crusher 1 has a mounting bracket 3 and a supporting section 2 on the base end side of the main frame 5. Accordingly, operation can be conducted without moving a car body within the reach of the operating device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a support for a work attachment of a construction vehicle which is mounted on a working device of a construction vehicle such as a hydraulic power shovel and used for dismantling construction work and other work. It is.

[0002]

2. Description of the Related Art A work attachment for a construction vehicle such as a crusher of a crushing type or a hydraulic breaker for crushing a concrete structure is mounted on a work device of the construction vehicle instead of a bucket and used.

A crusher 1 shown in FIG. 10 is an example of a work attachment for a construction vehicle. An intermediate portion of a pair of crushing arms 6 for crushing and crushing an object to be crushed such as concrete includes a main frame. A hydraulic cylinder 7 for operating the crushing arm is mounted between the rear ends of the pair of crushing arms 6. The crushing machine 1 includes a support portion 2 including a mounting bracket 3 and a turning mechanism 4 on a base end side of a main frame 5, and the mounting bracket 3 is attached to an arm 1 of a working device 11 of a construction vehicle 10.
2 and the front end of the bucket link 13 are mounted by mounting pins 14 and link pins 15.

Accordingly, the crusher 1 can be rotated up and down about the mounting pin 14 as a rotation axis by expansion and contraction of a bucket cylinder 16 provided between the arm 12 and the bucket link 13. The main frame 5 can be turned around the turning axis C by the turning mechanism 4.

[0005] However, with the above-described structure of the support portion 2, the crusher 1 cannot be rotated left and right, so that the concrete structure is disposed on the side of the arm 12 in a direction parallel to the arm. If you want to crush
Even within the reach of the working device, it is necessary to move the main body of the construction vehicle 10 to change the posture of the working device 11, and the working efficiency is poor. There is a similar problem with other work attachments having the same support as the crusher 1.

[0006]

SUMMARY OF THE INVENTION The present invention solves such a problem in a work attachment for a construction vehicle. It is an object of the present invention to provide a construction vehicle work attachment capable of performing work without moving the construction vehicle body.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention includes a support portion including a mounting bracket and a turning mechanism, and the mounting bracket is mounted on a working device of a construction vehicle so as to be vertically rotatable. In a working attachment for a construction vehicle, a turning mechanism is connected to the mounting bracket so as to be rotatable left and right.

The work attachment can be turned up and down with respect to the working device of the construction vehicle, turned by the turning mechanism, and also turned right and left. The operation can be performed within the reach of the operation device without moving the construction vehicle main body.

If a swing cylinder is provided between the mounting bracket and the turning mechanism, the rotation to the left and right can be performed more reliably.

[0010]

FIG. 1 is a front view showing a state in which a crusher according to an embodiment of the present invention is mounted on a construction vehicle.
FIG. 2 is a front view of the crusher, FIG. 3 is a plan view of the crusher, and FIGS. 4 and 5 are explanatory views of a working state of the crusher.

The construction vehicle 10 is a hydraulic power shovel, and includes a lower traveling unit 17, an upper revolving unit 18, and a working device 11. Working device 11 is boom 1
9 and the arm 12, a bucket is attached to the tip of the arm 12 in normal excavation work, but when crushing work of a concrete structure or the like is performed, the crusher 1 is mounted instead of the bucket. .

The crushing machine 1 has a pair of crushing arms 6 rotatably supported at the distal end of a main frame 5 at the intermediate portions of a pair of crushing arms 6 for crushing and crushing an object to be crushed such as concrete. A hydraulic cylinder 7 for operating the crushing arm is mounted between the rear ends of 6. This crusher 1
Is provided with a support portion 2 including a mounting bracket 3 and a turning mechanism 4 at a base end side of a main frame 5, and the mounting bracket 3 is attached to a distal end portion of an arm 12 and a bucket link 13 of a working device 11 of a construction vehicle 10. It is mounted with the mounting pin 14 and the link pin 15.

The mounting bracket 3 and the turning mechanism 4 are connected by a swing pin 20 perpendicular to the turning axis C of the turning mechanism 4 on a plane including the turning axis C of the turning mechanism 4 and perpendicular to the mounting pin 14. Are linked.

Accordingly, the crusher 1 can be turned up and down about the mounting pin 14 as a rotation axis by expansion and contraction of a bucket cylinder 16 provided between the arm 12 and the bucket link 13. The main frame 5 can be turned around the turning axis C by the turning mechanism 4, and the crusher 1 can be turned left and right using the swing pin 20 as a turning axis. However, if the crushing machine 1 turns freely left and right during the work, the work is hindered. Therefore, the swing pin 20 is fitted so that the crushing machine 1 turns left and right only when a predetermined power is applied. ing. Further, the turning mechanism 4 is provided with a stopper 21 for abutting on the mounting bracket 3 to restrict the range of rotation.

When a crushing operation is performed in a demolition work of a concrete structure or the like, the construction vehicle 10 is stopped at a work site, the upper turning body is turned, and the boom 1 of the working device 11 is turned on.
9. After the crusher 1 is adjusted to the position to be crushed by extending and contracting the arm 12, the crusher 1 is turned up and down, left and right, or turned. When the working posture is determined, the crushing arm 6 is opened and closed by expanding and contracting the hydraulic cylinder 7 to crush concrete or the like.

When turning left and right from the state shown in FIG. 3 to the right and left as shown in FIG. 4, the tip of the crusher 1 is brought into contact with a fixed object such as concrete to be crushed so as to apply a predetermined turning power. The work unit 11 may be moved slightly left and right by turning the upper revolving unit 18 of 10.

When the turning mechanism 4 is turned 90 ° from the state shown in FIG. 4, the state shown in FIG. 5 can be obtained. As described above, the crusher 1 can be turned up and down with respect to the working device of the construction vehicle 10 by the bucket cylinder 16, can be turned around the turning axis C by the turning mechanism 4, and further, can be turned by the swing pin 20. Since it can be rotated to the left and right sides as a driving axis, no matter what positional relationship the work object has, if it is within the reach of the work device 11, the work can be performed without moving the construction vehicle 10 body. It can be carried out.

FIG. 6 is a front view of a crusher showing another embodiment of the present invention, FIG. 7 is a plan view of the crusher, and FIGS. 4 and 5 are explanatory views of the working state of the crusher. The crusher 1 includes a swing cylinder 2 between a mounting bracket 3 and a turning mechanism 4.
2 are provided. Other configurations are the same as those of the crusher of FIG.

When turning right from the state of FIG. 7 as shown in FIG. 8, the swing cylinder 22 is extended, and when turning left as shown in FIG. 9, the swing cylinder 22 is contracted.

As described above, if the swing cylinder 22 is provided between the mounting bracket 3 and the turning mechanism 4, the turning to the left and right can be performed more reliably and easily.

[0021]

As described above, the work attachment for a construction vehicle according to the present invention moves the construction vehicle body as long as the work object is within the reach of the work device, regardless of the positional relationship. Work can be performed without causing

If a swing cylinder is provided between the mounting bracket and the turning mechanism, the turning to the left and right can be performed more reliably.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a crusher according to an embodiment of the present invention is attached to a construction vehicle.

FIG. 2 is a front view of the crusher of FIG.

FIG. 3 is a plan view of the crusher of FIG.

FIG. 4 is an explanatory view of a working state of the crusher of FIG.

FIG. 5 is an explanatory view of a working state of the crusher of FIG.

FIG. 6 is a front view of a crusher showing another embodiment of the present invention.

FIG. 7 is a plan view of the crusher of FIG.

FIG. 8 is an explanatory view of a working state of the crusher of FIG.

FIG. 9 is an explanatory view of a working state of the crusher of FIG.

FIG. 10 is a front view showing a state where a conventional crusher is attached to a construction vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Support part 3 Mounting bracket 4 Rotating mechanism 5 Main frame 6 Crushing arm 7 Hydraulic cylinder 10 Construction vehicle 11 Work device 12 Arm 13 Bucket link 14 Mounting pin 15 Link pin 16 Bucket cylinder 17 Lower traveling body 18 Upper revolving body 19 Boom 20 Swing pin 21 Stopper 22 Swing cylinder

Claims (2)

[Claims] 1. A work attachment for a construction vehicle, comprising a support portion comprising a mounting bracket and a turning mechanism, wherein the mounting bracket is vertically rotatably mounted to a work device of the construction vehicle, wherein the mounting bracket pivots on the mounting bracket. A work attachment for a construction vehicle, wherein the mechanism is connected to be rotatable left and right. 2. The work vehicle attachment according to claim 1, wherein a swing cylinder is provided between the mounting bracket and the turning mechanism.