CN117086596A - Bearing decomposing device and method - Google Patents

Abstract

The application discloses a bearing decomposing device and a bearing decomposing method, wherein the bearing decomposing device comprises a base, a push rod and a sliding block, wherein the base is used for extending into a part cavity, and the push rod is in plug-in fit with the base and pushes the base to provide pressure for decomposing a bearing; the base is provided with a chute perpendicular to the push rods, at least two slide blocks are arranged around the push rods, the slide blocks are connected in the chute in a sliding mode, the base is provided with guide rods arranged in parallel with the push rods, and guide grooves matched with the guide rods are formed in the slide blocks along the radial direction of the push rods; the base and the push rod are provided with pushing structures, and the sliding block is driven to be switched from a retracted state to an extended state under the action of the push rod of the pushing structures. The application can decompose the bearing in the part with the shrinkage opening at one end.

Description

Bearing decomposing device and method

Technical Field

The application relates to the technical field of bearing assembly and disassembly, in particular to a bearing disassembly device and a bearing disassembly method.

Background

The working load of the engine rotor is transferred to the engine shell through the bearing and the supporting component, and the rotor in the aeroengine is all made of rolling bearings, so that the aeroengine has the remarkable characteristics of small friction factor, small axial size and less lubricating oil required for cooling. The gas generator rotor in a certain vortex shaft type aeroengine adopts a supporting mode of 2 bearings, wherein one bearing is a cylindrical roller bearing with an inner ring without a flange, the inner ring of the cylindrical roller bearing is assembled on the shaft neck of a gas turbine disk, an outer ring with a rolling rod and a retainer is arranged in a spring support assembly, and the spring support assembly is fixed in a gas turbine bearing seat. The bearing outer ring and the bearing hole of the spring support assembly are in interference fit, the most common method for decomposing the bearing outer ring at present is to strike through a copper bar, the risk of potential contusion and strain is avoided, the bearing outer ring is uneven in single-point strike stress, concentrated stress is easy to generate, potential quality hidden trouble of the bearing is easy to occur, and the working quality of an engine is influenced.

Patent publication CN216152262U discloses and a bearing outer ring disassembly tool comprising: the lifting device comprises a pull rod, a support rod, lifting claws, a baffle, an upper cover plate and a handle; one end of the supporting rod is fixed on the bearing mounting machine body, the other end of the supporting rod is provided with an upper cover plate, and the baffle plate is arranged between the upper cover plate and the upper end surface of the bearing and is connected with the end part of the pull rod penetrating through a central threaded hole of the upper cover plate; the pull rod is matched with the upper cover plate through threads, and a handle is arranged at the upper end of the pull rod; a lifting claw is arranged between the baffle and the bearing to be disassembled, the lower end of the lifting claw is lapped on the lower end surface of the bearing inner ring, and the upper end of the lifting claw is fixed on the baffle; the handle is rotated, the pull rod drives the baffle to move upwards, and the lifting claw drives the bearing outer ring to move upwards along with the baffle, so that the purpose of separating the bearing outer ring is achieved. Although such a device can decompose a general bearing, since the annular protrusion is arranged on the inner wall of one end of the spring support component, which is far away from the bearing, to form a necking, the lifting claw in the scheme can be blocked by the annular protrusion if extending into the spring support component from one end, which is far away from the bearing, and can be blocked by the bearing itself if extending into the spring support component from one end, which is provided with the bearing, so that the scheme can not decompose the bearing in the part, which has the necking at one end.

Disclosure of Invention

The application provides a bearing decomposing device and a bearing decomposing method, which are used for solving the technical problem that in the prior art, a bearing in a part with a shrinkage opening at one end is difficult to decompose.

According to one aspect of the application, there is provided a bearing disassembly device, comprising a base, a push rod and a sliding block, wherein the base is used for extending into a part cavity, and the push rod is in plug-in fit with the base and pushes the base to provide pressure for disassembling the bearing; the base is provided with a chute perpendicular to the push rods, at least two slide blocks are arranged around the push rods, the slide blocks are connected in the chute in a sliding mode, the base is provided with guide rods arranged in parallel with the push rods, and guide grooves matched with the guide rods are formed in the slide blocks along the radial direction of the push rods; the base and the push rod are provided with pushing structures, the sliding block is driven to switch from a retracted state to an extended state under the action of the push rod of the pushing structures, in the retracted state, the sliding block is close to the push rod, and the projection of the base along the length direction of the push rod covers the projection of the sliding block along the length direction of the push rod; under the state of stretching out, the slider is kept away from the push rod, and the projection of slider along push rod length direction surpasses the projection of base along push rod length direction.

Through adopting above-mentioned technical scheme, when stretching into the part of waiting to decompose the bearing with decomposition device, the slider is in the withdrawal state, the diameter of base is less than the minimum diameter that the part was mouthed in order to stretch into from throat one end this moment, when the base moved to the position that is close to the bearing, promote the push rod, the effect of pushing away the push rod of structure is driven the slider to switch to the state of stretching out from the withdrawal state, make the slider support and lean on the bearing terminal surface, continue to exert pressure to the push rod this moment, the pressure passes through the slider effect at the bearing terminal surface, make the bearing be dismantled, can decompose the bearing in the part that one end has the throat.

Optionally, a plug hole is formed on the base, a counter bore is formed at one end of the plug hole to form a positioning step, the pushing structure comprises a pushing block arranged at the end part of the push rod, the diameter of the pushing block is gradually reduced from one end close to the push rod to one end far from the push rod, the push rod end face is matched with the positioning step, and the pushing block drives the sliding block to switch from the retracted state to the extended state by driving the push rod to approach the base until the push rod end face contacts with the positioning step.

By adopting the technical scheme, the pushing block is conical, the conical surface of the pushing block can push the sliding block to move in the process that the pushing block is pushed by the push rod, so that the sliding block slides out of the base and is switched from the retracted state to the extended state, and in the process that the push rod is continuously pushed to decompose the bearing, the pushing block is always pushed on the end face of the sliding block, so that the sliding block is kept stable in the process of disassembling the bearing.

Optionally, the pushing structure comprises elastic pieces arranged on the base, the elastic pieces are connected with the sliding blocks in a one-to-one correspondence manner, the elastic pieces are precompressed, so that the tension of the elastic pieces has a tendency of driving the sliding blocks to move away from the direction of the pushing rods, and the pushing rods are provided with locking pieces which enable the elastic pieces to be kept in a compressed state.

By adopting the technical scheme, when the sliding block is in the retraction state, the elastic piece is in the compression state, and the locking piece applies acting force to the sliding block to offset the elastic force of the elastic piece to the sliding block; when the state of the sliding block needs to be switched, the sliding block can stretch out under the elastic force of the elastic piece only by releasing the acting force of the locking piece on the sliding block, and the sliding block is switched into the stretching state.

Optionally, the locking piece is a magnet block, the sliding block is a metal or a magnet attracted by magnetic force, and the attractive force between the locking piece and the sliding block enables the elastic piece to be kept in a compressed state.

Through adopting above-mentioned technical scheme, the attraction of locking piece and slider through magnetic force makes slider compression elastic component and keeps stable, and when locking piece and slider dislocation or distance were great, magnetic force weakens, and the slider will stretch out under the effect of elastic component this moment, and when the locking piece resets, can attract the slider again to retract, makes slider compression elastic component and reset.

Optionally, one end of the sliding block far away from the push rod is provided with a positioning protrusion matched with the bearing positioning groove.

Through adopting above-mentioned technical scheme, the bearing in the bullet prop up the subassembly is provided with a plurality of positioning groove at the terminal surface, when decomposing the bearing, only need swivel mount, makes the location arch on the slider match with the positioning groove on the bearing, just can make the decomposition in-process, and the bearing keeps along axial movement, and can not take place to rotate, and the decomposition process is comparatively stable.

Optionally, the base includes bottom plate and slide board, the slider is located between bottom plate and the slide board, guide bar one end is connected with the bottom plate, and the other end is connected with the slide board.

Through adopting above-mentioned technical scheme, bottom plate and slide board all can lead and support the slider, make the in-process slider that breaks down the bearing even receive great load also be difficult for taking place bending deformation, stability is stronger.

Optionally, the bearing decomposition device further comprises a supporting seat for supporting the bearing part to be decomposed, a cavity for accommodating the bearing is formed in the supporting seat, and a clearance groove matched with the push rod is formed in the supporting seat.

By adopting the technical scheme, on one hand, the supporting seat can support the bottom of the part, so that the bottom is prevented from being knocked or toppled due to the fact that the force applied to the part is large in the process of disassembling the bearing; on the other hand, after the bearing is disassembled, the bearing falls into the cavity of the supporting seat and can not directly fall onto the ground, so that the damage risk of the bearing in the disassembling process can be reduced, and the empty avoiding groove can avoid the collision between the push rod and the supporting seat.

Optionally, the push rod includes fixed part and movable part, fixed part and base grafting cooperation, be provided with elastic support piece between movable part and the fixed part, be provided with the connecting rod on the movable part, the connecting rod passes the fixed part and is connected with the locking piece.

By adopting the technical scheme, when the sliding block is in the retraction state, the locking piece is in contact with the sliding block, the elastic supporting piece is in the initial state, when the state of the sliding block needs to be changed, the movable part is pushed to move towards the fixed part, the movable part drives the locking piece to move through the connecting rod, so that the locking piece is far away from the sliding block, the sliding block stretches out under the action of the elastic piece, and the elastic supporting piece is compressed at the moment; when the pressure applied to the movable part disappears, the movable part is far away from the fixed part under the action of the elastic supporting piece, and then the locking piece is driven to reset, so that the sliding block is switched from the extending state to the retracting state, and automatic reset can be realized.

Optionally, the movable part is close to the one end of fixed part and sets up the biography power step, the elastic support piece is the spring that encircles the biography power step, and the tension of elastic support piece makes and passes the clearance between biography power step and the fixed part.

Through adopting above-mentioned technical scheme, after moving the movable part to the fixed part and making the locking piece keep away from the slider, when continuing to remove the movable part, the biography power step of movable part can with fixed part butt in order to transmit pressure, passes through rigid biography power step transmission pressure and does not need elastic support piece transmission pressure, makes bearing dismantlement in-process elastic support piece be difficult for because the load is too big and take place the damage.

According to another aspect of the present application, there is also provided a bearing dismounting method for dismounting a bearing in a part having a reduced mouth at one end, characterized by comprising the steps of:

the push rod is inserted and installed in the base, and under the magnetic force of the magnet block on the push rod, the sliding block on the base compresses the elastic piece and moves towards the direction close to the push rod until the sliding block is switched to a retracted state; the push rod and the base extend into the part from the necking end of the part until the base is in contact with the bearing in the part; applying pressure to the movable part by the push rod to enable the movable part to drive the magnet block to move until the magnet block is misplaced with the slide block, at the moment, the elastic piece resets to push the slide block to move towards the direction away from the push rod until the slide block is switched to an extending state; the rotating push rod drives the base to rotate, and the sliding block rotates along with the base until the positioning protrusion on the sliding block is matched with the positioning groove on the bearing; pressure is applied to the push rod to push out the bearing in the part.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the decomposing device stretches into a part of the bearing to be decomposed, the sliding block is in a retracted state, the diameter of the base is smaller than the minimum diameter of the part so as to be convenient to stretch into from one end of the shrinkage mouth, when the base moves to a position close to the bearing, the pushing rod is pushed, the sliding block is driven to switch from the retracted state to the extended state under the action of the pushing rod of the pushing structure, the sliding block is abutted against the end face of the bearing, pressure is continuously applied to the pushing rod at the moment, the pressure acts on the end face of the bearing through the sliding block, the bearing is detached, and the bearing in the part with the shrinkage mouth at one end can be decomposed.

In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic view of a first preferred embodiment of a bearing disassembly apparatus according to the present application;

FIG. 2 is a schematic view of the slider of FIG. 1 in an extended configuration;

FIG. 3 is a schematic view of the slider of FIG. 1 in a retracted state;

FIG. 4 is a schematic view of a second preferred embodiment of the bearing disassembly apparatus of the present application prior to the first thrust application;

FIG. 5 is a schematic view of a second preferred embodiment of the bearing disassembly apparatus of the present application after a first thrust application;

fig. 6 is a flow chart of a bearing disassembly method of the present application.

Legend description:

1. a slide block; 2. a push rod; 21. a fixing part; 22. a movable part; 23. an elastic support; 24. a connecting rod; 25. a force transmission step; 31. a bottom plate; 32. a slideway plate; 4. a locking member; 5. a guide rod; 6. positioning the bulge; 7. a support base; 8. pushing blocks; 9. an elastic member; 10. a part; 11. and (3) a bearing.

Detailed Description

Embodiments of the application are described in detail below with reference to the attached drawing figures, but the application can be practiced in a number of different ways, as defined and covered below.

The application is described in further detail below with reference to fig. 1-6.

In a first aspect, an embodiment of the present application discloses a bearing disassembly device. Referring to fig. 1, the bearing 11 is disassembled and assembled and comprises a base, a push rod 2, a supporting seat 7 and a sliding block 1, wherein the base is used for extending into a cavity of the part 10, and the push rod 2 is in plug-in fit with the base and pushes the base to provide pressure for disassembling the bearing 11; alternatively, the base is a revolving body, and the push rod 2 is a cylinder coaxial with the base, so that the pressure of the push rod 2 can uniformly act on the bearing 11 along the circumferential direction. The maximum diameter of the base is less than the minimum inner diameter of the necked-down end of the part 10 so that the base can extend into the part 10 from the necked-down end of the part 10.

Referring to fig. 1, a base is provided with a chute perpendicular to a push rod 2, at least two slide blocks 1 are arranged around the push rod 2, the slide blocks 1 are slidably connected in the chute, the base is provided with a guide rod 5 arranged in parallel with the push rod 2, and the slide blocks 1 are provided with guide grooves matched with the guide rod 5 along the radial direction of the push rod 2. The slide 1 can slide in the direction of the guide slot, optionally, in order to avoid a rotation of the slide 1 during the sliding process, the cross section of the guide bar 5 is polygonal, and in a specific embodiment, the cross section of the guide bar 5 is square. The number of the sliders 1 may be two, three or more, and the sliders 1 are uniformly spaced in the circumferential direction of the base so as to uniformly apply pressure to the bearing 11.

In order to enable the slider 1 to remain stable when transmitting pressure, the base comprises a bottom plate 31 and a slideway plate 32, the slider 1 is positioned between the bottom plate 31 and the slideway plate 32, one end of the guide rod 5 is connected with the bottom plate 31, and the other end is connected with the slideway plate 32. Both the bottom plate 31 and the slideway plate 32 can guide and support the sliding block 1, so that the sliding block 1 is not easy to bend and deform even if a large load is applied during the process of decomposing the bearing 11.

Referring to fig. 2 and 3, a pushing structure is arranged on a base and a push rod 2, under the action of the push rod 2 of the pushing structure, a sliding block 1 is driven to switch from a retracted state to an extended state, in the retracted state, the sliding block 1 is close to the push rod 2, and the projection of the base along the length direction of the push rod 2 covers the projection of the sliding block 1 along the length direction of the push rod 2; under the state of stretching out, slider 1 keeps away from push rod 2, and the projection of slider 1 along push rod 2 length direction surpasses the projection of base along push rod 2 length direction. After the base stretches into the inner cavity of the part 10, pressure is applied to the push rod 2 for the first time, so that the push rod 2 drives the pushing piece to move, under the action of the pushing piece, the sliding block 1 stretches out of the base to be in contact with the end face of the bearing 11, then pressure is applied to the push rod 2 for the second time, and the pressure can be transmitted to the bearing 11 through the sliding block 1, so that the bearing 11 slides under the action of the pressure and finally breaks away from the part 10.

Optionally, in order to avoid the bearing 11 rotating during sliding, the end of the slider 1 remote from the push rod 2 is provided with a positioning protrusion 6 for matching with the positioning groove of the bearing 11. When the bearing 11 is disassembled, the positioning protrusion 6 of the sliding block 1 is clamped in the positioning groove of the bearing 11, and the bearing 11 is axially limited.

The supporting seat 7 is used for supporting the part 10 of the bearing 11 to be disassembled, a cavity for accommodating the bearing 11 is formed in the supporting seat 7, and a clearance groove matched with the push rod 2 is formed in the supporting seat 7. When the bearing 11 is detached, the part 10 is mounted on the supporting seat 7, so that the part 10 can be kept stable, and the bearing 11 can fall into a cavity in the supporting seat 7 after being detached, so that the bearing 11 can be collected.

In a specific embodiment, the pushing structure comprises a pushing block 8 arranged at the end of the pushing rod 2, the diameter of the pushing block 8 gradually decreases from one end close to the pushing rod 2 to one end far away from the pushing rod 2, the end face of the pushing rod 2 is matched with the positioning step, and the pushing block 8 drives the sliding block 1 to switch from the retracted state to the extended state by driving the pushing rod 2 to approach the base until the end face of the pushing rod 2 contacts with the positioning step. In order to enable the sliding blocks 1 to synchronously slide, a conical pushing surface is formed on the pushing block 8, and the end part of each sliding block 1 is contacted with the pushing surface. In the process of applying pressure to the push rod 2 for the second time, the pushing block 8 is always pushed on the end face of the sliding block 1, so that the sliding block 1 is kept stable in the process of disassembling the bearing 11.

Referring to fig. 4 and 5, in another specific embodiment, the pushing structure includes elastic members 9 disposed on the base, the elastic members 9 are connected to the sliding blocks 1 in a one-to-one correspondence, the elastic members 9 are precompressed, so that tension of the elastic members 9 tends to drive the sliding blocks 1 to move away from the pushing rod 2, and the pushing rod 2 is provided with a locking member 4 that keeps the elastic members 9 in a compressed state. When the sliding block 1 is in a retracted state, the elastic piece 9 is in a compressed state, and at the moment, the locking piece 4 applies a force to the sliding block 1 to counteract the elastic force of the elastic piece 9 to the sliding block 1; when the state of the slider 1 needs to be switched, the slider 1 is stretched out under the elastic force of the elastic member 9 and is switched to the stretched state only by releasing the acting force of the locking member 4 on the slider 1.

The locking member 4 is a magnet block, the sliding block 1 is a metal or a magnet attracted by magnetic force, and the attractive force between the locking member 4 and the sliding block 1 keeps the elastic member 9 in a compressed state. Before the first application of pressure to the push rod 2, the locking piece 4 and the sliding block 1 are attracted by magnetic force, so that the sliding block 1 compresses the elastic piece 9 and keeps stable; after the first pressure is applied to the push rod 2, the distance between the locking piece 4 and the sliding block 1 is increased, the magnetic force is weakened, and at the moment, the sliding block 1 stretches out under the action of the elastic piece 9; when the locking piece 4 is reset, the locking piece 4 again attracts the sliding block 1 to retract, so that the sliding block 1 compresses the elastic piece 9 and resets. Alternatively, the elastic member 9 is a spring.

Optionally, in order to enable the locking piece 4 to automatically reset, the push rod 2 comprises a fixed portion 21 and a movable portion 22, the fixed portion 21 is in plug-in fit with the base, an elastic supporting piece 23 is arranged between the movable portion 22 and the fixed portion 21, a connecting rod 24 is arranged on the movable portion 22, and the connecting rod 24 penetrates through the fixed portion 21 to be connected with the locking piece 4. When pressure is applied to the push rod 2 for the first time, the pressure acts on the movable part 22, so that the movable part 22 moves towards the fixed part 21, the movable part 22 drives the locking piece 4 to move through the connecting rod 24, the locking piece 4 is far away from the sliding block 1, the sliding block 1 stretches out under the action of the elastic piece 9, and the elastic supporting piece 23 is compressed at the moment; when the pressure applied to the movable part 22 disappears, under the action of the elastic supporting piece 23, the movable part 22 is far away from the fixed part 21, and then the locking piece 4 is driven to reset, so that the sliding block 1 is switched from the extending state to the retracting state, and automatic reset can be realized.

In order to avoid that the second time of applying pressure to the push rod 2, the pressure is all applied to the elastic support member 23, optionally, the movable portion 22 is provided with a force transmission step 25 near one end of the fixed portion 21, the elastic support member 23 is a spring surrounding the force transmission step 25, and a gap is left between the force transmission step 25 and the fixed portion 21 due to the tension of the elastic support member 23. When the pressure is applied to the push rod 2 for the first time, the force transmission step 25 approaches the fixed part 21, and when the pressure is applied to the push rod 2 for the second time, the force transmission step 25 of the movable part 22 is abutted against the fixed part 21 to transmit the pressure, and the pressure is transmitted through the rigid force transmission step 25 without using the elastic support piece 23, so that the elastic support piece 23 is not easy to be damaged due to overlarge load in the process of disassembling the bearing 11.

Referring to fig. 6, the present application also discloses a bearing disassembly method, comprising the steps of:

and S100, inserting and installing the push rod in the base, and enabling the sliding block in the base to slide to a retracted state. Under the withdrawal state, the sliding block is close to the push rod, and the projection of the base along the length direction of the push rod covers the projection of the sliding block along the length direction of the push rod, so that the base can extend into the part from the necking end of the part.

And step S200, the push rod and the base are extended into the part from the necking end of the part until the base is in contact with the bearing in the part.

Step S300, pressure is applied to the push rod for the first time, so that the push rod drives the pushing structure to move, and the sliding block slides from a retracted state to an extended state; under the state of stretching out, the slider is kept away from the push rod, and the projection of slider along push rod length direction surpasses the projection of base along push rod length direction, and the slider stretches out in the base and contacts with the bearing terminal surface.

And S400, applying pressure to the push rod for the second time, and transmitting the pressure to the bearing through the sliding block to separate the bearing from the part.

Step S500, the pressure on the push rod is removed, and the sliding block is switched from the extending state to the retracting state.

Step S600, the push rod and the base are taken out of the part.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A bearing decomposing device is characterized in that,

the device comprises a base, a push rod (2) and a sliding block (1), wherein the base is used for extending into a cavity of a part (10), and the push rod (2) is in plug-in fit with the base and pushes the base to provide pressure for decomposing a bearing (11);

the sliding block (1) is arranged around the push rod (2) and is connected in the sliding grooves in a sliding mode, a guide rod (5) which is arranged in parallel with the push rod (2) is arranged on the base, and a guide groove matched with the guide rod (5) is formed in the sliding block (1) along the radial direction of the push rod (2);

the base and the push rod (2) are provided with pushing structures, the sliding block (1) is driven to be switched from a retracted state to an extended state under the action of the push rod (2) of the pushing structures, in the retracted state, the sliding block (1) is close to the push rod (2), and the projection of the base along the length direction of the push rod (2) covers the projection of the sliding block (1) along the length direction of the push rod (2); under the state of stretching out, slider (1) keep away from push rod (2), and the projection of slider (1) along push rod (2) length direction surpasses the projection of base along push rod (2) length direction.

2. The bearing destruction device as claimed in claim 1, wherein,

the base is provided with a plug hole, one end of the plug hole is provided with a counter bore to form a positioning step, the pushing structure comprises a pushing block (8) arranged at the end part of the pushing rod (2), the diameter of the pushing block (8) is gradually reduced from one end close to the pushing rod (2) to one end far away from the pushing rod (2), the end face of the pushing rod (2) is matched with the positioning step, and the pushing block (8) drives the sliding block (1) to switch from a retracted state to an extended state by driving the pushing rod (2) to the base until the end face of the pushing rod (2) contacts with the positioning step.

3. The bearing destruction device as claimed in claim 1, wherein,

the pushing structure comprises elastic pieces (9) arranged on a base, the elastic pieces (9) are connected with the sliding blocks (1) in one-to-one correspondence, the elastic pieces (9) are precompressed, tension of the elastic pieces (9) causes a tendency that the sliding blocks (1) are driven to move away from the push rod (2), and locking pieces (4) which enable the elastic pieces (9) to keep a compressed state are arranged on the push rod (2).

4. A bearing breakdown device according to claim 3, wherein,

the locking piece (4) is a magnet block, the sliding block (1) is metal or magnet attracted by magnetic force, and the attractive force between the locking piece (4) and the sliding block (1) enables the elastic piece (9) to be kept in a compressed state.

5. The bearing destruction device as claimed in claim 1, wherein,

one end of the sliding block (1) far away from the push rod (2) is provided with a positioning protrusion (6) matched with the bearing positioning groove.

6. The bearing destruction device as claimed in claim 1, wherein,

the base comprises a bottom plate (31) and a slideway plate (32), the sliding block (1) is positioned between the bottom plate (31) and the slideway plate (32), one end of the guide rod (5) is connected with the bottom plate (31), and the other end of the guide rod is connected with the slideway plate (32).

7. The bearing destruction device as claimed in claim 1, wherein,

the bearing decomposing device further comprises a supporting seat (7) for supporting the part (10) of the bearing (11) to be decomposed, a cavity for accommodating the bearing (11) is formed in the supporting seat (7), and a clearance groove matched with the push rod (2) is formed in the supporting seat (7).

8. The bearing destruction apparatus according to claim 4, wherein,

the push rod (2) comprises a fixed part (21) and a movable part (22), the fixed part (21) is in plug-in fit with the base, an elastic supporting piece (23) is arranged between the movable part (22) and the fixed part (21), a connecting rod (24) is arranged on the movable part (22), and the connecting rod (24) penetrates through the fixed part (21) to be connected with the locking piece (4).

9. The bearing destruction device as claimed in claim 8, wherein,

one end of the movable part (22) close to the fixed part (21) is provided with a force transmission step (25), the elastic support piece (23) is a spring surrounding the force transmission step (25), and a gap is reserved between the force transmission step (25) and the fixed part (21) due to tension of the elastic support piece (23).

10. A bearing removal method for removing a bearing (11) in a part (10) having a reduced mouth at one end, comprising the steps of:

the push rod (2) is inserted and installed in the base, and the sliding block (1) in the base slides to a retracted state;

the push rod (2) and the base extend into the part (10) from the necking end of the part (10) until the base is in contact with the bearing (11) in the part (10);

the pushing rod (2) is pressed for the first time, so that the pushing rod (2) drives the pushing structure to move, and the sliding block (1) slides from a retracted state to an extended state;

the pushing rod (2) is applied with pressure for the second time, the pressure is transmitted to the bearing (11) through the sliding block (1), and the bearing (11) is separated from the part (10);

the pressure on the push rod (2) is canceled, and the sliding block (1) is switched from an extending state to a retracting state;

the push rod (2) and the base are taken out of the part (10).