JPH0319327B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mechanism for attaching a working tool such as a bucket to the end of a drive arm of a civil engineering vehicle, such as a power shovel.

Conventional technology Generally, when stripping and excavating a paved roadbed made of asphalt, concrete, etc., the pavement is paved using a stripping tool that is attached to the drive arm of a civil engineering vehicle, such as a power shovel, so that it can be raised using a raising cylinder, and that has an integral stripping claw. After peeling off the roadbed and then removing the peeling tool from the tip of the drive arm,
A bucket is attached to the tip of the drive arm, and the bucket is used to excavate the roadbed that has become unpaved due to peeling of the paved roadbed.

Problems to be Solved by the Invention When moving from stripping the pavement base to excavation work,
Conventionally, replacing the stripping tool at the end of the drive arm of a power shovel with a bucket, or replacing the bucket with a stripping tool, is complicated because the stripping tool and bucket are heavy, and the work efficiency is extremely low. .

Means for Solving the Problems The present invention provides a tapered peeling claw 10 integrally attached to a supporting body 8 which is attached to the tip of a drive arm so as to be able to rise, and a peeling claw 10 having a tapered shape is provided on the supporting body 8 opposite to the peeling claw 10. A peeling and crushing tool 1 has a crushing claw 12 rotatably pivoted to cross the peeling claw 10, and a pair of mounting pieces 20, 20 are provided protruding from the back wall portion 18, and the mounting pieces 20 , 20, and a working tool 17 with a fixing plate 22 bridged between them, and the mounting piece 2 of the working tool 17.
After the peeling claw 10 and the crushing claw 12 of the peeling and crushing tool 1 are inserted between 0 and 20, the crushing claw 12 and the peeling claw 10 are rotated in the closing direction of the crushing claw 12.
The fixing plate 22 of the work tool 17 and the back wall part 18
The working tool 17 is fixed to the peeling and crushing tool 1 by being pressed into contact with the tool.

Embodiment FIGS. 1 to 7 show embodiments of the present invention. In the figure, reference numeral 1 denotes a peeling and crushing tool rotatably attached to the tip of a drive arm 2 of a power shovel (not shown) via a pivot 3. 4 is a cylinder rod of an undulating cylinder (not shown) attached to a predetermined part of the drive arm 2; 5 and 6 are links; the tip of the link 5 is attached to the peeling and crushing tool 1 via a pivot 7; The peeling and crushing tool 1 is raised about the pivot 3 by the operation of the raising cylinder. Reference numeral 8 denotes a support body constituting the above-mentioned peeling and crushing tool 1, which is integrally provided with a peeling claw 10 having a tapered tip 9 extending forward and having a sharp point at its lower end, and has a penetrating portion 11 in the peeling claw 10. It was formed. Reference numeral 12 denotes a crushing claw rotatably mounted on a predetermined portion of the support body 8 via a pivot shaft 13. It is supported opposite to 10. Reference numeral 15 denotes an opening/closing cylinder for opening and closing the crushing claw 12. This cylinder 15 is provided within the support body 8, and its rod 16
The tip of the crushing claw 12 is pivotally attached to a predetermined portion of the crushing claw 12.

Reference numeral 17 is a working tool attached to the peeling and crushing tool 1, for example, a bucket with a predetermined shape, and as shown in FIGS. A pair of mounting pieces 20, 20 are provided protrudingly. 21 is a stopper member protruding from the lower side of the outer surface 19 of the back wall portion 18 of the bucket 17; 22 is a mounting piece 2 of the bucket 17;
When the bucket 17 is attached to the peeling and crushing tool 1, the sharp tip 9 of the peeling claw 10 is brought into contact with the stopper member 21 by a fixed plate provided as a bridge between the apex portions 23 and 23 of the peeling claws 10 and 20. Fixed plate 22
The tip portion 14 of the crushing claw 12 is brought into pressure contact with the crushing claw 12 . 24 is a reinforcing member provided as a bridge between the attachment pieces 19 of the bucket 17.

The procedure for attaching the bucket 17 to the peeling and crushing tool 1 attached to the tip of the drive arm 2 of the power shovel will be explained as follows.

First, the opening/closing cylinder 15 of the peeling and crushing tool 1 is operated to extend the rod 16, so that the tip end 14 of the crushing claw 12 is inserted into the penetrating portion 1 of the peeling claw 10 as shown in FIG.
The crushing claw 12 is rotated in the closing direction (counterclockwise) about the pivot 13 until it is located inside the opening. When the tip 14 of the crushing claw 12 is located inside the penetration part 11 of the peeling claw 10, the peeling and crushing tool 1 is moved in a predetermined posture, and the tip 9 of the peeling claw 10 is inserted into the bucket 17 as shown in FIG. The mounting piece 2 integrally holds the peeling claw 10 and the crushing claw 12 until they come into contact with the stopper member.
Insert between 0 and 20. Thereafter, the opening/closing cylinder 15 is further operated to extend the rod 16. Then, the crushing claw 12 whose tip end 14 is located inside the penetration part 11 of the peeling claw 10 rotates in the closing direction (counterclockwise) about the pivot 13 as a fulcrum, and due to this rotation, as shown in FIG. As shown, the arcuate crushing surface 14a of the tip 14 of the crushing claw 12 comes into pressure contact with the fixing plate 22 of the bucket 17, and at the same time, due to the reaction force of the crushing claw 12 against the fixing plate 22, the upper surface 9a of the tip 9 of the peeling claw 10 is the back wall part 18 of the bucket 17
The shoulder portion 12a of the crushing claw 12 is attached to the upper portion 19b of the outer surface 19 of the back wall portion 18.
, and the bucket 17 is fixed to the peeling and crushing tool 1. And Bucket 17
During excavation work, the open circuit of the open/close cylinder 15 is locked with an appropriate safety device, and the bucket 17 is closed.
This prevents the peeling and crushing tool from falling off from the peeling and crushing tool 1.

When removing the bucket 17 from the peeling and crushing tool 1 after excavation work, after unlocking the open circuit safety device of the opening/closing cylinder 15, the rod 16 of the opening/closing cylinder 15 is retracted, and the crushing claw 12 is removed.
The crushing claw 12 is rotated in the opening direction (clockwise) about the pivot 13 until the tip 14 of the peeling claw 10 is located inside the penetration part 11 of the peeling claw 10.
When the distal end 14 of the peeling claw 10 is located within the penetration part 11 of the peeling claw 10, the peeling and crushing tool 1 is moved and the peeling claw 10 is taken out from between the attachment pieces 20, 20 of the bucket 17.

In the above embodiment, the case where the bucket belt 17 is installed facing the inside of the power shovel has been explained, but the present invention is not limited to this, and can also be applied to the case where the bucket belt 17 is installed facing the outside of the power shovel. Of course you can. In this case, after pulling out the pivots 3 and 7 at the tips of the drive arm 2 of the power shovel and removing the peeling and crushing tool 1 from the drive arm 2, the peeling and crushing tool 1 is reversed in the front and rear direction and the pivots 3 and 7 are removed. It is attached to the drive arm 2 by the following. This peeling and crushing tool 1
The procedure for attaching the bucket 17 to the container is the same as in the above embodiment.

Further, in the above embodiment, the case where the bucket 17 is attached to the peeling and crushing tool 1 has been described, but the present invention is not limited to the bucket 17.
Various working tools can be attached to the peeling and crushing tool 1.

EFFECTS OF THE INVENTION According to the present invention, a desired working tool such as a bucket can be simply and easily attached to a peeling and crushing tool that is attached to the tip of a drive arm of a civil engineering vehicle, such as a power shovel, so that it can be raised. Therefore,
For example, in peeling and excavating work on paved roadbeds made of asphalt, concrete, etc., there is no need to replace the working tools, and the labor of the worker can be significantly reduced, and work efficiency can be improved. Also, the structure of the baguto becomes simpler.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the mounting mechanism according to the present invention, and FIG.
The figure is a front view of the peeling and crushing tool, and Figure 3 is its side view.
FIG. 4 is a perspective view of a bucket tote which is a working tool, FIG. 5 is a side view of the bucket tot, and FIGS. 6 and 7 are explanatory diagrams showing how to attach the working tool. 1... Peeling and crushing tool, 8... Support body, 10...
Peeling claw, 12... Crushing claw, 17... Work tool, 18
... Back wall part, 20, 20 ... Mounting piece, 22 ... Fixing plate.

Claims (1)

[Claims] 1. A tapered peeling claw is integrally provided on a support body that is movably mounted on the tip of a drive arm, and a crushing claw is rotatable on the support body opposite to the peeling claw,
and a peeling and crushing tool pivotally connected to the peeling claw so as to be able to intersect with the peeling claw, and a working tool having a pair of mounting pieces protruding from the back wall and a fixing plate bridged between the mounting pieces, and the above-mentioned After inserting the peeling claw and the crushing claw of the peeling and crushing tool between the mounting pieces of the work tool, the crushing claw and the peeling claw are attached to the fixing plate and the back wall of the work tool by rotating the crushing claw in the closing direction. 1. A working tool attachment mechanism for a civil engineering vehicle, characterized in that the working tool is fixed to a peeling and crushing tool by being pressed into contact with the peeling and crushing tool.