JPS6126539Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is an installation of a crusher that clamps concrete, etc. between a pair of crushing arms, and drives both crushing arms with a drive device such as a hydraulic cylinder to crush concrete, etc. by forcefully pressing it. It is related to the device.

The above-mentioned crusher is used by being attached to the end of the arm of a movable civil engineering machine such as a power shovel. Therefore, by the movement of the arm, the crusher can be moved up and down, raised and lowered, and rotated together with the arm. Furthermore, it may be necessary to change the mounting angle of the crusher with respect to the tip of the arm.

Conventionally, in order to achieve the above objectives,
The crusher is removably connected to the mounting frame attached to the end of the arm of a power shovel, etc. using a number of bolts, and if it becomes necessary to change the mounting direction, remove the bolts and change the mounting angle each time. There is something like this. However, this method is very time-consuming, so some systems automatically change the mounting angle, but in the case of such an automatic mechanism, a hydraulic cylinder or a hydraulic motor is required to change the mounting angle of the crusher. This requires a hydraulic system for its control, making the device complex and expensive.

The purpose of this invention is to solve the above-mentioned drawbacks of the conventional crusher mounting angle adjustment mechanism.
That is, in this invention, a swing ring fixed to the frame of a crusher is rotatably attached to a guide ring provided on a base plate of a mounting frame fixed to an arm of a power shovel, etc., and an engager of a locking mechanism provided on a base plate of the mounting frame. The present invention provides an installation angle adjustment device for a crusher, in which the crusher is engaged with a plurality of engagement recesses provided on a slewing ring by spring pressure.

The details of this invention will be explained below based on an embodiment shown in the accompanying drawings.

In the figure, A is a crusher, which consists of a pair of crushing arms 2 and 3 rotatably attached to a frame 1, and a drive mechanism such as a hydraulic cylinder that opens and closes the arms 2 and 3. The mechanism of the parts is known.

4 is a top plate fixed to the upper part of the frame 1, and a swing wheel 5 is fixed thereon. This turning ring 5 is circular and has a groove 6 extending all the way around its outer periphery, and a large number of shallow engagement recesses 7 are formed on the upper surface at regular intervals on the circumference concentric with the center of the turning ring 5. .

Reference numeral 8 denotes a mounting frame, and a guide ring 10 is fixed to the outer periphery of the lower surface of the base plate 9 by means such as bolting.

Further, this guide wheel 10 is fitted to the outside of the swivel ring 5 with a slight play.
A recessed groove 11 corresponding to the recessed groove 6 is formed all around the inner periphery of the recessed groove 6, and a large number of balls 12 are fitted into both of the recessed grooves 6 and 11.

B is a pair of locking mechanisms provided on the board 9.
This mechanism B has a cylindrical body 13 on a substrate 9 as shown in FIG.
is fixed, and the lower end of this cylindrical body 13 is made to pass through a hole in the substrate 9 and protrude above the turning ring 5, and this cylindrical body 13 is
An engaging element 14 such as a ball rotatably fitted into the opening at the lower end of the swivel ring 5 is removably engaged with the recess 7 on the swing ring 5 by the pressure of a spring 15.

Reference numeral 16 denotes a bush fitted into the cylinder 13 so as to be able to move up and down.
The spring 15 is positioned between the bush 16 and the pusher 17 fitted in the upper part of the cylinder 13 so as to be able to rise and fall freely, and the adjustment bolt 19 is screwed into the threaded hole of the plug 18 fixed on the cylinder 13. By spring 15
The bolt 19 is fixed by a lock nut 20.

Also, a grease nipple 21 is provided on the side of the cylinder 13.
is provided and press-fits grease into the cylinder body 13.
Fill the inside with grease, pushbutton 16, presser 17
At the same time, grease is supplied to the outside of the engager 14 from an oil hole in the lower part of the bush 16. Further, although the spring 15 is a coil spring in the illustrated example, a disc spring may be used in some cases.

In addition, a hole 31 through which a hydraulic hose passes is bored in the center of the base plate 9 of the mounting frame 8 and the top plate 4 of the frame. , crusher A
and are connected by a rotary joint.

This invention has the above configuration, and each engaging element 14
is engaged with one of the recesses 7 on the swing ring 5 by the pressure of the spring 15, so the swing ring 5 is fixed to the mounting frame 8 unless a rotational force above a certain level is applied to the swing ring 5. ing.

Therefore, the arm 22 of the power shovel is attached to the mounting frame 8.
By attaching the tip of the frame 8 rotatably with a pin, and also attaching the hoisting link 23 of the power shovel rotatably with a pin, the mounting frame 8 is integrated with the frame 1 and freely moves up and down, as well as raising and lowering the power shovel. Since the machine rotates together with the vehicle body, the frame 1 is moved to an arbitrary position and the crushing arms 2 and 3 are opened and closed to crush concrete and the like.

However, some concrete cannot be gripped by the crushing arms 2 and 3 if the frame 1 remains integrally fixed to the mounting frame 8.

In such a case, in this invention, part of the crusher A is strongly pressed against a hard, immovable part on the ground,
By moving the arm 22, the turning wheel 5 rotates relative to the guide wheel 10, and the engaging element 14 is pushed out of the recess 7 and engaged with the next recess 7. In this way, the crusher A is rotated by a predetermined angle with respect to the mounting frame 8, and the crushing operation is resumed with the engager 14 being engaged and fixed in the predetermined recess 7.

Further, in the mounting device of this invention, a protrusion 32 having a plurality of pin insertion holes is provided on the outer periphery of the base plate 9 of the mounting frame 8 and the top plate 4 of the frame. Therefore, when performing work that does not require a rotation function, a fixing pin 33 is inserted into the insertion hole as shown in FIGS. 1 and 2.
, and fix the crusher A and locking mechanism B.

In this invention, as described above, the slewing ring 5 attached to the crusher A is rotatably fitted into the guide ring 10 fixed to the mounting frame 8 attached to the arm 22 of a power shovel. The crusher A can be easily rotated relative to the mounting frame 8 by simply moving the arm 22 by touching the crusher A.

Therefore, the operator can freely change the direction of the crusher A while riding on a working vehicle such as a power shovel, which is extremely convenient.

Further, a large number of engagement recesses 7 are arranged circumferentially on the turning ring 5 at regular intervals, and a locking mechanism B is provided on the base plate 9 to which the guide wheel 10 is fixed, so that the engagement member 14 can be When it is removably engaged with the recess 7 and a force above a certain level is applied to the swivel ring 5, the swivel ring 5 automatically rotates relative to the guide wheel 10 and is fixed at an appropriate position. Therefore, even if a strong torsional action is applied to the arm during the crushing operation, this torsion is absorbed by the revolving portion, and there is no adverse effect on the arm or boom of the crusher mounting cart.

In addition, when cutting and rounding reinforcing bars exposed by crushing concrete, or collecting crushed materials and reinforcing bars using a crushing arm, the crusher can be fixed with several pins (first If you do this, you will be able to work more efficiently without turning around on your own.

Furthermore, by organizing the hydraulic hoses in the center of the mounting frame and using a rotary joint at the connection to the crusher, this design allows the crusher to rotate freely with respect to the mounting frame on the trolley. The hydraulic hose will not twist or sag, so
It has many benefits, such as easier work and fewer hose breakage accidents.

[Brief explanation of the drawing]

Fig. 1 is a top view of a crusher having an adjustment device of this invention, Fig. 2 is a side view of the same as above, Fig. 3 is an enlarged longitudinal sectional side view of the same main part, and Fig. 4 is an enlarged view of a part of the same as above. FIG. 1... Frame, 2, 3... Crushing arm, 4...
...Top plate, 5...Swivel ring, 7...Engagement recess, 8...
Mounting frame, 9... Board, 10... Guide ring, 14...
Engagement element, 15... spring, A... crusher, B... locking mechanism, 31... hole, 33... pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a crusher consisting of a pair of crushing arms rotatably attached to a frame and a drive mechanism such as a hydraulic cylinder that opens and closes the crushing arms, A swivel ring fixed to the top plate of the mounting frame is fitted into a guide ring fixed to the base plate of the mounting frame so as to be rotatable but not axially movable, and the upper surface of the swivel ring is provided with a number of engagement recesses at regular intervals. A mounting device for a crusher, wherein a locking mechanism is arranged on a circumference concentric with the turning ring, and the base plate of the mounting frame is provided with a locking mechanism having an engaging element that engages and disengages from the engaging recess by an appropriate spring pressure. (2) Claim 1 of the utility model registration claim has a mechanism in which pin insertion holes are provided in the base plate of the mounting frame and the outer periphery of the top plate of the frame, and the mounting frame and the crusher are fixed by means of fixing pins inserted into the insertion holes. crusher mounting equipment. (3) A utility model registration request having a structure in which a hole for passing a hydraulic hose is provided in the center of the base plate of the mounting frame and the top plate of the frame, and the hydraulic hose passing through this hole is connected to the crusher via a rotary joint. A mounting device for a crusher as described in Scope 1 or 2.