JPS6217045B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removably attaching a breaker to a hydraulic excavator via a hydraulic clam shell bucket.

Conventional hydraulic shovels can be equipped with a hydraulic clam shell bucket and a hydraulic breaker individually, but two hydraulic shovels are used when excavating with a clam shell bucket and crushing with a breaker. There was no means to enable both the clam shell bucket and the breaker to be used alternately by one hydraulic shovel.

An object of the present invention is to solve the above-mentioned problem by attaching a hydraulic clam shell bucket to a hydraulic excavator, and by operating a hydraulic cylinder for opening and closing the bucket of the hydraulic excavator. A supporting rod fixed to the breaker is held between the opposing side plates of the shell and the claws at the bottom of the shell, so that the breaker can be attached or detached from the side or below the clamshell bucket, and the breaker can be attached or detached. To provide a device for attaching a breaker to a hydraulic excavator, which makes it possible to selectively and easily use a clam shell bucket or a breaker.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a device for mounting a breaker on a hydraulic shovel according to the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 3, a breaker is attached to the tip of an arm A of a hydraulic shovel via a hydraulic clam shell bucket 1. This clam shell bucket 1 is of a hydraulic type and has two shells 2 and 2 facing each other.
The inner upper ends of each of the side plates 3, 3 are pivotally supported on a pivot member 5 fixed to the lower end of the hydraulic cylinder 4 for opening and closing the bucket, and the outer upper ends of each of the four links 6 are pivotally supported. It is connected to one end via a pin 7, and the other end of the link 6 is connected to the upper end of the bucket opening/closing hydraulic cylinder 4 via a pin 8. The clam shell bucket 1 is opened and closed by the operation of a hydraulic cylinder 4 for opening and closing the bucket. Inflow and return hydraulic hoses (not shown) each having one end connected to the bucket opening/closing hydraulic cylinder 4 are connected to a hydraulic power source.

Ciel 2, opposite Clam Ciel Bucket 1,
2 are slightly opened, and between them, a support rod 10 is fixed to one side of the breaker 20 at approximately right angles to the center line of the breaker 20.
horizontally, and the support rod 10 is clamped by the side plates 3, 3 of the shells 2, 2 and the claws 12, 12 at the bottom of the shells by the operation of the hydraulic cylinder 4, and the breaker 20 is placed in a clam shell bucket. 1
It is attached almost perpendicularly to the side of the One member 22a of a self-seal coupling 22 is provided at the other end of the inflow and return hydraulic hoses 21a, each of which is connected at one end to the breaker 20. The other member 22b mated with one member 22a of the coupling ring is attached to an appropriate position on the upper frame 23 of the clamshell bucket 1, and a hydraulic hose 21b connected to it at one end is connected to a hydraulic power source (not shown). It's been extended.

In the second embodiment shown in FIGS. 4 and 5, a breaker 20 passes through the center of the breaker 20 and connects a wide support rod 20 fixed vertically to a clam shell bucket.
The breaker 20 is mounted below the center of the clam shell bucket 1 by being held between the side plates 3, 3 of the shell and the claws 12, 12.

Next, the operation of attaching the breaker 20 to the hydraulic shovel will be described. First, the breaker 20 is placed vertically on a pedestal or suspended appropriately. At this time, the support rod 10 having a center line substantially perpendicular to the center line of the breaker 20 is in a horizontal state. After opening the clamshell bucket 1 attached to the hydraulic excavator and moving the bucket 1 to a position where the supporting rod 10 can be held between the two opposing shells 2, 2, the hydraulic cylinder 4 for opening and closing the bucket is opened. When activated, the support rod 10 is firmly clamped by the side plates 3, 3 of the opposing shells 2, 2 of the bucket 1 and the claws 12, 12 at the bottom of the shells. Next, the hydraulic hoses 21a and 21b for inflow and return of the breaker 20 are connected by a self-seal coupling 22. Through the above operations, the breaker 20 is attached to the hydraulic excavator via the clam shell bucket 1, and the breaker work can be carried out.

When removing the breaker 20 from the hydraulic shovel, the breaker 20 is first placed vertically on a pedestal and left standing or suspended. Next, breaker 20
Hydraulic hoses 21a, 21b for inflow and return of
The self-sealing coupling 22 is released, and then the bucket opening/closing hydraulic cylinder 4 is operated to open the bucket 1, the support rod 10 is released, and the bucket 1 is raised to restore it to a hydraulic clam shell.

Since the breaker mounting device according to the present invention allows the breaker to be mounted and removed easily and in a short time,
One hydraulic excavator can be used alternately as a clam shell bucket and a breaker, so if you encounter rock etc. while excavating with a hydraulic excavator, you can easily attach the breaker and remove the rock. The excavation work can be continued by crushing and restoring it to a clam shell bucket, improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a first embodiment of the present invention in which a breaker is attached to the end of the arm of a hydraulic excavator via a hydraulic clam shell bucket, and FIG. 2 is a front view of the first embodiment of the present invention. A side view, FIG. 3 is a cross-sectional view taken along the line showing the fixed state of the breaker and support rod in FIG. 2, FIG. 4 is a front view showing the second embodiment of the present invention, and FIG. 5 is a side view of FIG. 4. It is a diagram. 1... Clam Ciel Bucket, 2... Ciel,
3...Both side plates, 4...Hydraulic cylinder for opening and closing the bucket, 10...Support rod, 11...Gap, 12...
Pawl, 20... Breaker, 21a, b... Hydraulic hose, 22... Self-seal coupling.

Claims (1)

[Claims] 1. In a hydraulic excavator equipped with a hydraulic clam shell bucket that is opened and closed by the operation of a hydraulic cylinder for opening and closing the bucket, each side of the opposing shell of the clam shell bucket has shells that are rotatably pivoted to face each other. The plate and the claws provided at the bottom of the shell hold a support rod whose side surface shape matches the inner side shape of the claws on both sides of the shell of the clam shell bucket and the bottom of the shell. A device for attaching a breaker to a hydraulic excavator, characterized by having a breaker fixed to the breaker.