JPS5939029B2 - crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crusher that clamps concrete or the like between a pair of crushing arms and crushes it by forcefully pressing it with a hydraulic drive cylinder or the like.

When crushing concrete buildings, concrete roadbeds, etc., conventionally, crushers that use impact, such as pneumatic hammers, have often been used.

However, these crushers have the drawback of high noise and vibration.

In order to solve these drawbacks, a crusher has been developed in which a fixed arm is attached to one side of the frame and a movable arm is attached to the other, and the two arms clamp and crush concrete or the like.

However, in such a known crusher, since the fixed arm is integrated with the frame, only the movable arm moves during crushing, so as the arms open and close, the center between the two arms moves with respect to the center of the frame. This will create a bending moment on the arm and boom of the mounting trolley, causing failure.

This invention solves the above-mentioned drawbacks of the conventional crusher, and the crushing arms provided on the frame are configured to open and close at the same time, and the crushing arms can be easily replaced. will be explained based on an example as follows.

In the figure, F is a frame, which is a frame in which a pair of side plates 1 are integrally connected by an end wall 2 and connecting members 3 and 4, and a square end plate 5 is integrally fixed to the rear end.

Reference numeral 6.7 denotes a pair of crushing arms, and the rear ends of the arms 6.7 are removably pivoted to both front ends of the frame F by a pair of arm pins 8.

This arm pin 8 has a large-diameter head as shown in FIG. 3, and an end cap 9 is placed on the side without the head and screwed to prevent it from being removed.

A pair of levers 10 are fixed behind the pivot point of one arm 6, and a pair of protrusions 11 are provided on the side facing the other arm at the pivot point of the same arm 6, and the pivot point of the other arm 7 is fixed. A pair of protrusions 1 facing toward the protrusions 11 of one arm 6 are provided in the part.
2 will be provided.

13 is a link, and this link 13 connects each arm 6.7
Both ends are fitted between the protrusions 11 and 12 and connected by a removable link pin 14.

This link pin 14 has a large diameter head, and a snap ring is fitted into a circumferential groove on the outer periphery of the other end to prevent removal.

Reference numeral 15 denotes a drive cylinder operated by hydraulic pressure or the like, which is attached between the side plates 1 of the frame F. This cylinder 15 is rotatably attached to the both side plates 1 through attachment shafts 16 on both outer sides of the front portion thereof.

Reference numeral 11 denotes a piston rod protruding from the front end of the cylinder 15, the tip of which is inserted into the ends of the levers 10, and is pivoted by a cylinder pin 18.

Like the arm pin 8, this cylinder pin 18 also has a large diameter head at one end, and an end camp 19 is screwed to the other end to prevent removal.

In addition, arm pin 8, link pin 14, cylinder pin 1
For the shape of 8, other methods of stopping the punching may be applied.

Reference numeral B denotes a mounting frame, in which a bracket 20 having a plurality of mounting holes 22 for mounting on an arm or a luffing cylinder of a power shovel or the like is integrally provided on a mounting plate 21, and this mounting plate 21 is attached to the end plate of the frame F. It is square like 5.

Therefore, the end plate 5 of the frame F is attached to the mounting plate 21 by 9.
Frame F can be fixed by changing its orientation every 90 degrees with respect to mounting frame B attached to the arm of a power shovel, etc. by rotating it by 0 degrees and fixing it with bolts inserted through the mounting holes provided on both sides. Can be done.

Further, the mounting plate 21 is not limited to a square shape, but may be circular or square.

The crusher of the present invention has the above-mentioned structure, and for example, the mounting frame B is attached to the shovel mounting part of a power shovel, and work is carried out by freely moving the frame F together with the mounting frame B in the same manner as in a power shovel.

G) Well, in the state shown in FIG. 1 where the piston rod 1γ is retracted the most, the space between the crushing arms 6 and 7 is at its maximum.

In this state, when an object to be crushed such as a concrete IJ is held in between and the drive cylinder 15 is actuated to push out the piston rod 17, the crushing arm 6 rotates inward and its movement is reflected by the protrusion 11.
, the link 13, the protrusion 12, and the other crushing arm 7.
The arms 6.7 rotate inward as shown by the chain lines in FIG. 1, and both arms 6.7 powerfully crush the object to be crushed.

After crushing, when the piston rod 17 of the drive cylinder 15 is retracted, each crushing arm 6.7 returns to its original position as indicated by the solid line in FIG.

In this invention, as described above, a pair of left and right crushing arms connected by a link simultaneously rotate to crush objects to be crushed by the movement of the piston rod of the drive cylinder operated by hydraulic pressure or the like.

Therefore, unlike a crusher in which only one arm moves, the reaction force during crushing is less biased, so there is no risk of a large bending moment acting on the arm or boom of the mounting cart and causing failure.

In addition, each of the crushing arms is detachably attached to the frame by a detachable arm pin, and the link connecting both arms is also detachably connected by a detachable link pin. Since the arm is detachably attached using a removable cylinder pin, when the tip becomes worn out, only the arm needs to be replaced, and its operation is simple and quick.

In addition, by preparing various types of crushing or cutting arms with different tip shapes, and using the appropriate arm for the target object, crushing can be carried out efficiently, or operations such as cutting exposed reinforcing bars can be carried out. effective.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of the crusher of the present invention, FIG. 2 is a side view of the crusher, and FIG. 3 is a developed sectional view taken along the line A--A in FIG. 6.7... Crushing arm, 8... Arm pin, 10... Lever, 11, 12...
・Protrusion, 13... Link, 14... Link pin, 15... Drive cylinder, 16...
...Shaft, 17... Piston rod, 18...
...Cylinder pin, B...Mounting frame, F...
··flame.

Claims (1)

[Claims] 1. To install a power shovel, the rear parts of a pair of crushing arms are removably pivoted to both sides of the front of a frame fixed to a frame, etc., using removable arm pins, and the crushing arms are attached integrally to the rear of the pivot joint of one arm. The rear end of the lever provided on the frame is removably connected to the piston rod of a swingable drive cylinder pivoted to the frame by a removable cylinder pin, and both ends of the link are connected to the two arms by a removable link. A crusher configured so that both arms are removably connected by pins and rotated at the same angle to open and close.