CN211729020U

CN211729020U - Tool for disassembling bearing

Info

Publication number: CN211729020U
Application number: CN201922359226.1U
Authority: CN
Inventors: 郭立金; 魏强; 王文超; 张宝栋; 张�杰
Original assignee: Shandong Cchc Hydraulics Co ltd; Shandong Changlin Machinery Group Co Ltd
Current assignee: Shandong Zhongrun Hydraulic Machinery Co.,Ltd.; Shandong Changlin Machinery Group Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-23
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a bearing is dismantled and is used frock, include: the dismounting body is provided with an inner thread hole in the center, the outer wall of one end of the dismounting body in the axial direction is provided with a drawing outer claw, and the drawing outer claw is ensured to clamp the bottom end face of the cylindrical roller of the dismounted cylindrical roller bearing. The number of the drawing outer claws is consistent with the number of the cylindrical rollers of the disassembled cylindrical roller bearing. And the drawing outer claws are designed into abdicating arc grooves between every two drawing outer claws, and the radius of the abdicating arc groove is larger than or equal to the radius of the cylindrical roller of the disassembled cylindrical roller bearing. The inner hexagon screw is arranged in an inner thread hole at the center of the dismounting body, and the length of the inner hexagon screw is more than or equal to twice the thickness of the dismounted cylindrical roller bearing. The utility model discloses disassemble simple and convenient, labour saving and time saving, work efficiency is high.

Description

Tool for disassembling bearing

Technical Field

The utility model belongs to the technical field of the engineering machine tool hydraulic transmission technique and specifically relates to a bearing is dismantled and is used frock.

Background

The hydraulic motor is an important component of the hydraulic excavator, the bearing is a key part of the hydraulic motor, and in the using process of the excavator, if the bearing reaches the service life or is damaged by foreign matters, the excavator cannot work. Therefore, when the motor rear cover blind hole is replaced and the bearing installed in a narrow space is replaced, if the installation clearance between the outer ring of the bearing and the inner hole of the rear cover is transitional or interference, the bearing is inconvenient to disassemble and cannot be maintained quickly. In a word, hydraulic motor back lid bearing installation often is the blind hole and bearing installation space is narrow and small, because of bearing excircle and back lid hole installation clearance often be transition or interference again, very difficult when the bearing needs to be changed.

Application No.: 201811201877.1, filing date: 2018-10-16 discloses a blind hole inner bearing dismounting device which comprises a hollow main bar, and an adjusting screw rod and an inner screw bracket which are respectively in threaded connection with the inner wall and the outer wall of the main bar; the main lever is of a stepped shaft structure consisting of a twisting lever connecting section, a connecting section and a ball mounting section, the outer diameter of the twisting lever connecting section is sequentially reduced, a twisting lever hole arranged along the radial direction is formed in the outer wall of the twisting lever connecting section, and the twisting lever penetrates through the twisting lever hole; the inner wall and the outer wall of the connecting section form threads; a plurality of ball holes are uniformly distributed on the circumferential wall at the front end of the ball mounting section; the ball is arranged in the ball hole; the adjusting screw rod consists of an adjusting rod, a transition table and an extrusion table which are connected in sequence; the extrusion table is of a circular table structure, and one end close to the transition table is a large-diameter end; the outer wall of one end of the adjusting rod, which is close to the transition table, is provided with an external thread; the internal thread support is a cylindrical structure with a stepped hole formed in the center. The invention realizes the convenient and fast non-damage disassembly of the bearing in the blind hole on the mechanical equipment, greatly saves the maintenance time and improves the working efficiency.

Application No.: 201821813321.3, filing date: 2018-11-05 discloses a blind hole bearing quick dismounting device, which comprises L-shaped clamping pieces, a cuboid pin rod, a nut and a step supporting piece, wherein the L-shaped clamping pieces are used in pairs, bearing clamping grooves are formed in the outer surfaces of the L-shaped clamping pieces, step through holes are formed in the step supporting piece, the diameter of a large hole close to the end face is larger than the outer diameter of a bearing to be dismounted, the nut is sleeved on the step supporting piece, the L-shaped clamping pieces penetrate through the step through holes of the step supporting piece and are inserted into an inner hole of the bearing, the bearing clamping grooves clamp the inner end face of the bearing, the cuboid pin rod sequentially penetrates through the nut, the step supporting piece and the L-shaped clamping pieces, the L-shaped clamping pieces are spread, the nut is rotated.

Application No.: 201820112492.7, filing date: 2018-01-23 discloses a blind hole bearing outer ring dismounting tool which comprises a claw groove, a force bearing claw, a top ring and a screw rod, wherein the claw groove is disc-shaped, a through hole is formed in the axis, and a plurality of grooves are uniformly distributed in the disc surface of the claw groove; a bearing claw is arranged in each groove, the outer edge of each bearing claw is in contact with the outer ring of the bearing, and the inner edge of each bearing claw is in contact with the top ring; the top ring is also disc-shaped, a protruding screw hole is arranged at the axis, one end of the screw hole is inserted into the through hole, and the screw rod is screwed into the screw hole and penetrates out of the claw groove; the claw grooves and the top ring are both provided with screw holes and are fixedly connected through screws. The tool greatly reduces the disassembly time of the bearing outer ring in the blind hole, avoids the potential safety hazard of equipment caused by improper maintenance when the bearing outer ring is left in the blind hole, improves the normal production and operation efficiency of the equipment, and greatly reduces the labor intensity of maintenance workers.

Application No.: 201621274441.1, filing date: 2016-11-25 discloses a blind hole bearing dismounting device, which comprises a handle, a connecting rod, a screw rod, a movable block, a dismounting block, a thread bush and a guide bush, the connecting rod is fixed on the handle, the screw rod is movably connected at one side of the connecting rod far away from the handle, the threaded sleeve is fixedly connected with the guide sleeve, the sizes of the connecting rod and the screw rod are matched with the sizes of the inner parts of the threaded sleeve and the guide sleeve, so that the connecting rod and the screw rod can penetrate through the threaded sleeve or the guide sleeve, the connecting rod is movably connected with the threaded sleeve, the screw rod is provided with a limiting hole, the side wall of the guide sleeve is provided with a kidney-shaped groove, one side of the screw rod, which is far away from the connecting rod, is fixedly connected with an arc center, the center of the movable block is provided with a through hole for the screw rod to pass through, the movable block is movably connected with the screw rod, the dismounting block is provided with two blocks which are respectively positioned on two sides of the movable block and connected with the movable block, and the movable block and the dismounting block are provided with conical surfaces which are matched with each other.

Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, perhaps technical field or application scenario are different, are directed to the utility model discloses more technical problem and the beneficial effect that will solve, above open technical document all do not have the technological inspiration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bearing is dismantled and is used frock disassembles simple and convenient, labour saving and time saving, and work efficiency is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a frock is used in bearing dismantlement, includes:

the dismounting body is provided with an inner thread hole in the center, the outer wall of one end of the dismounting body in the axial direction is provided with a drawing outer claw, and the drawing outer claw is ensured to clamp the bottom end face of the cylindrical roller of the dismounted cylindrical roller bearing.

Further, the drawing outer claws are arranged in the same number as the cylindrical rollers of the disassembled cylindrical roller bearing.

Furthermore, the drawing outer claws are designed into abdicating arc grooves between every two drawing outer claws, and the radius of the abdicating arc grooves is larger than or equal to the radius of the cylindrical roller of the disassembled cylindrical roller bearing.

Further, still include:

the inner hexagon screw is arranged in an inner thread hole at the center of the dismounting body, and the length of the inner hexagon screw is more than or equal to twice the thickness of the dismounted cylindrical roller bearing.

Compared with the prior art, the utility model following beneficial effect has:

this frock is dismantled blind hole installation and narrow and small cylindrical roller bearing in space, hydraulic motor back lid bearing installation often is the blind hole, bearing excircle and back lid hole installation cooperation relation often are transition or interference, if the bearing need be changed, separate the bearing inner circle earlier, adopt the bearing to dismantle the frock, pack into the bearing along the clearance between the bearing cylindrical roller is adjacent, when exceeding bearing roller bottom, it is rotatory, make the outer claw of frock align with each cylindrical roller bottom end face center, then the hexagon screw at rotatory frock center, make frock and bearing cylindrical roller terminal surface atress compress tightly, when precessing inwards along with the screw, bearing and back lid separation. The tool is simple and convenient to disassemble and high in working efficiency.

Drawings

Fig. 1 is a schematic structural view of a bearing dismounting tool of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is an application state diagram of the present invention.

In the figure: a cylindrical roller bearing 1; the bearing disassembling tool 2; a socket head cap screw 3; and a rear cover 4.

An abdicating arc groove 21; the outer jaw 22 is pulled; an inner wire hole 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution:

the utility model provides a frock is used in bearing dismantlement, includes:

the dismantlement body, also be exactly the bearing on the drawing dismantles frock 2, the internal thread hole 23 is seted up at the dismantlement body center, and the outer claw 22 is drawn in the setting of a self axial tip outer wall of dismantlement body, draw the outer claw and guarantee to block the bottom face of the cylindrical roller of being dismantled cylindrical roller bearing 1.

Furthermore, the drawing outer claws are designed into abdicating arc grooves 21 between every two drawing outer claws, and the radius of the abdicating arc grooves is larger than or equal to the radius of the cylindrical roller of the disassembled cylindrical roller bearing.

Further, still include:

and the inner hexagon screw 3 is arranged in an inner thread hole at the center of the dismounting body, and the length of the inner hexagon screw is more than or equal to twice the thickness of the dismounted cylindrical roller bearing.

Dismantle the cylindrical roller bearing of blind hole installation, hydraulic motor back lid bearing installation is often blind hole and space are narrow and small, bearing excircle and back lid hole erection gap often are transition or interference, if the bearing need be changed, adopt the bearing to dismantle the frock, pack into the bearing along bearing cylindrical roller, when exceeding roller length, it is rotatory, make the outer claw of frock catch on cylindrical roller bottom terminal surface, hexagon screw at rotatory frock center, make frock and bearing cylindrical roller terminal surface compress tightly, when screw inward precession, the bearing separates with the back lid. The outer claw of the bearing disassembling tool 2 is in a semicircular arc shape, and the bottom of the bearing is placed in a gap between cylindrical rollers 2 of the bearing to be rotated and compressed for disassembly. The center of the bearing disassembling tool 2 is screwed in through the hexagon screws 3 to separate the bearing from the rear cover, so that the disassembling is simple, the time and the labor are saved, and the working efficiency is high.

The size of the bearing retainer is determined by the diameter of an inscribed circle of a bearing roller, the size of phi D1 is determined by the diameter of an inner ring of the bearing retainer, the size of phi D2 is determined by the diameter and the number of rollers, the size of R and the number of uniform distribution are determined by the diameter and the number of rollers, the size of H is determined by a distribution circle of the bearing roller, the size of L1 is determined by the width of a bearing, and the size of L2 is determined.

1. Taking down the bearing inner ring, and installing the R arc of the bearing disassembling tool 2 into the bearing along the gap between the bearing cylindrical rollers 1;

2. when the plane of the outer claw of the bearing disassembling tool 2 exceeds the bottom end of the roller, the tool is rotated to align the center of the outer claw of the tool with the center of the end face of the bottom of the cylindrical roller;

3. a hexagon screw 3 at the center of the tool is rotated by an inner hexagon wrench, so that the step surface at the bottom of a bearing installation inner hole of a screw rear cover 4 is contacted;

4. and (3) continuing to screw in the socket head cap screw by using the socket head cap spanner, so that the tool is tightly pressed against the end face of the bearing cylindrical roller, and the outer ring of the bearing is separated from the inner hole 4 of the rear cover along with the screw screwing in.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bearing is dismantled and is used frock which characterized in that includes:

2. The tool for disassembling the bearing of claim 1, wherein the number of the drawing outer claws is the same as the number of the cylindrical rollers of the disassembled cylindrical roller bearing.

3. The tool for disassembling the bearing of claim 2, wherein the drawing outer claws are designed to be abdicating arc grooves between every two drawing outer claws, and the radius of the abdicating arc groove is larger than or equal to the radius of the cylindrical roller of the disassembled cylindrical roller bearing.

4. The tool for bearing disassembly according to claim 2 or 3, further comprising: