JPH0730830Y2 - Support mechanism for crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses a crushing device attached to the tip of an industrial vehicle to crush a building or the like to be demolished so that the operating direction of the crushing device is changed. The present invention relates to a support mechanism for rotatably supporting.

[Prior Art] As a conventional technology, there is, for example, Japanese Utility Model Publication No. 57-6695.

In the above-mentioned publication, an annular groove is formed in the sliding surface of two rotatably connected end plates, and a large number of spheres are housed in the annular groove in order to make the end plate rotate smoothly. An actuating redirection device is disclosed.

[Problems to be Solved by the Invention] In the case of the above-mentioned operation direction changing device, when the sphere is damaged, it takes a lot of trouble to replace the sphere, and when the annular groove is worn, the entire end plate is damaged. There is a problem that replacement is required, and there is a problem that it is difficult to load the spherical body into the annular groove when the annular groove is damaged or a foreign substance enters the annular groove.

The present invention aims to solve the above problems.

[Means for Solving the Problems] A support mechanism for a crushing device according to the present invention comprises an outer plate having a ring-shaped outer wall projecting from a peripheral portion at a tip of a mounting bracket for the crushing device, and the outer wall. A ring-shaped inner side wall fitted inside is juxtaposed with an inner plate protruding from the peripheral edge portion, and is formed by a pair of outer roller receiving surfaces that are separably connected to the inner side wall of the outer side wall. The outer groove is formed in an annular shape, while the inner groove formed by a pair of inner roller receiving surfaces that are separably connected to the outer wall surface of the inner wall is formed in an annular shape facing the outer groove. In order to prevent the inner plate from rotatably connecting to the outer plate in a roller hole formed by the outer groove and the inner groove facing each other and facing each other. A structure in which each roller is enclosed so that it can roll Have.

[Operation] A pair of separable outer roller receiving surfaces that are recessed in the inner wall surface of the outer wall of the outer plate, and recessed in the outer wall surface of the inner wall of the inner plate that is inserted into the outer wall. A large number of rollers are enclosed in a roller hole formed in an annular shape by a pair of separable inner roller receiving surfaces, and the inner plate is rotatably connected to the outer plate by these rollers and is pulled out. Then, the outer roller receiving surfaces are separated and the rollers are taken out from the roller holes.

[Advantages of the Invention] Since the present invention is configured as described above, the mechanism for connecting the outer plate and the inner plate can be simplified, and the turning operation of the inner plate can be smoothed to change the operation direction of the crushing device. The operation can be smoothed.

Further, since the roller hole in which the roller is enclosed is formed by the four separable roller receiving surfaces, the replacement work of the roller when the roller is damaged can be simplified and the cost for repairing the roller receiving surface can be reduced. Can be saved.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

A pair of support plates 3 arranged side by side with a gap in a mounting bracket 1 attached to the tip of a boom of an industrial vehicle and the tip of a hydraulic cylinder (not shown) connected to the boom.
And a pair of crushing members 4, 4 pivotally attached to both support plates 3 for crushing a building to be demolished, and for oscillating both crushing members 4 in opposite directions. A crushing device 2 including hydraulic cylinders 5 connected to the base ends of both crushing members 4 is rotatably supported via a support mechanism S.

In the support mechanism S, a disc-shaped substrate 7 is provided on the outer plate 6 that is continuously provided integrally with the tip portion of the mounting bracket 1, and a ring-shaped substrate 7 is provided so as to project on the peripheral portion of the substrate 7 on the side surface of the crushing device. An outer wall 8 is formed, while a disc-shaped substrate 10 is provided on an inner plate 9 that is continuously provided integrally with the base ends of both support plates 3 and a peripheral portion of the substrate 10 on the side surface of the anti-crushing device. A ring-shaped inner wall 11 protruding from the inner wall and inscribed in the outer wall 8
Are formed, and the outer plate 6 and the inner plate 9 are juxtaposed to the front end of the mounting bracket 1 with the inner side wall 11 inserted into the outer side wall 8 so as to be rotatable about the rotation center line a. ing.

A front outer ring body 12 and a rear outer ring body 13, which are formed in a ring shape having the same inner diameter and are overlapped with each other in the direction of the rotation center line a to form an outer wall 8, are formed on the peripheral edge of the base plate 7 of the outer plate 6. The outer ring bodies 12 and 13 and a proper number of bolts 14 inserted through the substrate 7 are fastened in a separable manner.

A first outer roller receiving surface 12a having a conical surface inclined by 45 ° with respect to the rotation center line a is circumferentially formed at a corner portion on the rear outer ring body 13 side on the inner end edge of the front outer ring body 12 while being circumferentially formed. , Rear outer ring 1
A rotation center line a is provided at the corner portion on the front outer ring body 12 side of the inner end edge of 3.
Second outer roller receiving surface 13 having a conical surface inclined by 45 ° with respect to
a is formed in a circumferential shape so as to face the first outer roller receiving surface 12a,
On the inner wall surface of the outer wall 8, a V-groove-shaped outer groove 15 formed by both outer roller receiving surfaces 12a and 13a that are separably connected is annularly formed.

A bearing 17 is attached to the center of the base plate 7 of the outer plate 6, and a shaft hole 17a having an opening on the inner plate 9 side is recessed in the center of the bearing 17 and the bearing 17 is used for an industrial vehicle. The first oil passage 18 and the second oil passage 19 which are respectively connected to the pressure oil supply pipeline and the pressure oil discharge pipeline that are piped along the boom of Further, a rear oil chamber 20 communicated with the tip of the first oil passage 18 and a front oil chamber 21 communicated with the tip of the second oil passage 19 are provided on the inner peripheral surface of the shaft hole 17a. It is recessed annularly.

A rear inner ring body 22 and a front inner ring body 23 are formed in a ring shape having the same outer diameter on the peripheral edge of the substrate 10 of the inner plate 9 and are overlapped with each other in the direction of the rotation center line a to form the inner side wall 11. , The ring-shaped internal gear 24 having teeth 24a on its inner surface, the substrate 10, both inner ring members 22, 23, the internal gear 24
The projecting pieces 24b are fastened so as to be separable by a suitable number of bolts 25 that are respectively inserted.

At the corner portion on the front inner ring body 23 side of the outer end edge of the rear inner ring body 22, a conical first inner roller receiving surface 22a inclined by 45 ° with respect to the rotation center line a is circumferentially formed. Front inner ring 23
At the corner portion on the rear inner race 22 side of the outer edge of the second inner roller receiving surface 23a having a conical surface inclined by 45 ° with respect to the rotation center line a.
Are circumferentially formed so as to face the first inner roller receiving surface 22a. The outer wall surface of the inner wall 11 has a V-groove-shaped inner groove 26 formed by roller receiving surfaces 22a and 23a annularly formed on both inner sides which are separably connected to each other. Between the outer wall surface of the inner wall 11 and the outer groove 15 and the inner groove 26 are faced to each other, and a roller hole 27 having a square cross section is circumferentially provided.

Inside the roller hole 27, the inner plate 9 is rotatably connected to the outer plate 6 so that the inner plate 9 can be rotated smoothly, and the inner plate 9 is rotatably connected to the outer plate 6 to prevent the inner plate 9 from coming off. A large number of cylindrical rollers 28 arranged in the respective directions are enclosed so as to be rollable in an inclined posture, and each roller 28 is rotatably supported by each roller receiving surface 12a, 13a, 22a, 23a. With both outer ring bodies 12, 13 of the outer plate 6 removed from the base plate 7, each roller 28 is fitted into the inner groove 26, and then both outer ring bodies 12, 13 are fastened to the base plate 7 with bolts 14. The roller 28 can be enclosed in the roller hole 27, and
When the outer ring bodies 12 and 13 are removed from the base plate 7, the rollers 28 can be removed from the roller holes 27.

Spindle 29 attached to the center of substrate 10 of inner plate 9
The shaft hole 17 of the bearing 17 protruding toward the outer plate 6 side.
A shaft head 29a, which is rotatably and tightly fitted in the inside of a, is formed, and a third oil passage 30 and a fourth oil passage 31 respectively connected to the hydraulic cylinder 5 of the crushing device 2 are formed on the support shaft 29. Are formed parallel to each other along the rotation center line a. Third oil passage
30 is communicated with the first oil passage 18 via an oil passage 32 communicated with the rear oil chamber 20, and the fourth oil passage 31 is communicated with the second oil passage 19 via an oil passage 33 communicated with the front oil chamber 21. Is in communication with.

A motor 35 is attached near one end of the base plate 7 of the outer plate 6, and a pinion 36 engaged with an internal gear 24 is fitted into the inner wall 11 of the inner plate 9 on the motor shaft of the motor 35. It is worn. When the motor 35 is rotationally driven to rotate the pinion 36, the internal gear 24 rotates together with the inner plate 9 about the rotation center line a, and the directions of both the crushing members 4 of the crushing device 2 are adapted to the crushing work. Can be replaced as required.

Next, the operation and effect of the embodiment having the above-mentioned configuration will be described.

In this example, the outer plate 6 is provided with a ring-shaped outer wall 8 at the tip of the mounting bracket 1 for the crushing device.
And an inner plate 9 in which a ring-shaped inner side wall 11 fitted and inserted in the outer side wall 8 is provided at a peripheral edge portion so as to be juxtaposed.
An outer groove 15 formed by a pair of outer roller receiving surfaces 12a and 13a that is separably connected to the inner wall of the is recessed annularly, while an outer groove of the inner groove 11 is separably connected. 1
Inner groove 2 formed by a pair of inner roller receiving surfaces 22a, 23a
A roller hole 27 formed by annularly forming 6 facing the outer groove 15 so that the outer groove 15 and the inner groove 26 face each other and face each other.
In order to prevent the inner plate 9 from being rotatably connected to the outer plate 6 and to prevent the inner plate 9 from coming off, a plurality of rollers 28 are rotatably enclosed.

Therefore, the mechanism for connecting the outer plate 6 and the inner plate 9 can be simplified to simplify and downsize the support mechanism S, and the rotating operation of the inner plate 9 can be smoothed to change the operation direction of the crushing device 2. Can be smoothed and stabilized.

Further, the outer ring bodies 12 and 13 and the inner ring bodies 22 and 23 can be separated from each other, and the roller hole 27 in which the roller 28 is enclosed is formed.
Is formed by four separable roller bearing surfaces 12a, 13a, 22a, 23a, the roller 28 when the roller 28 is damaged.
Replacing the damage on the roller bearing surface by simply replacing either of the outer ring bodies 12 and 13 or the inner ring bodies 22 and 23 even if either of the roller bearing surfaces is damaged. Since there is no need to replace the entire outer plate 6 or the entire inner plate 9, there is an effect that the cost for repairing damage to the roller receiving surface can be reduced.

Further, in this example, the motor 35 is rotationally driven to rotate the inner plate 9 by an arbitrary angle, so that the operation direction changing operation of the crushing device can be simplified.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a supporting mechanism, and FIG. 2 is a side view of a crushing device. 1 …… Mounting bracket 2 …… Crushing device 6 …… Outer plate 8 …… Outer wall 9 …… Inner plate 11 …… Inner wall 12a, 13a …… Outer roller receiving surface 15 …… Outer groove 22a, 23a …… Inner side Roller receiving surface 26 …… Inner groove 27 …… Roller hole 28 …… Roller S …… Support mechanism

Claims (1)

[Scope of utility model registration request] 1. An outer plate having a ring-shaped outer wall projecting from the peripheral portion at the tip of a mounting bracket for a crushing device, and a ring-shaped inner wall fitted and inserted in the outer wall at the peripheral portion. A projecting inner plate is provided side by side, and an outer groove formed by a pair of outer roller receiving surfaces that are separably connected to the inner wall surface of the outer wall is annularly recessed, while the inner wall is formed. An inner groove formed by a pair of inner roller receiving surfaces that are separably connected to each other on the outer wall, and is annularly recessed to face the outer groove, and the outer groove and the inner groove face each other. A plurality of rollers are rotatably enclosed in the roller hole formed by being opposed to each other in order to rotatably connect the inner plate to the outer plate and prevent the inner plate from coming off. Supporting mechanism for crushing device.