Bearing disassembly apparatus and method

Abstract

The application discloses a bearing disassembling device and method, wherein the bearing disassembling device comprises a base, a push rod and a sliding block, the base is used for extending into a part cavity, the push rod is in plug-in cooperation with the base and pushes the base to provide pressure for disassembling the bearing, a sliding groove perpendicular to the push rod is arranged on the base, at least two sliding blocks are arranged around the push rod, the sliding blocks are in sliding connection in the sliding groove, a guide rod parallel to the push rod is arranged on the base, a guide groove matched with the guide rod is formed on the sliding block along the radial direction of the push rod, and a pushing structure is arranged on the base and the push rod, the pushing structure is driven by the push rod to switch the sliding block from a retracted state to an extended state. The application can disassemble the bearing in a part with a necked end.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing assembly and disassembly, in particular, to a bearing disassembly device and method. BACKGROUND

[0002] The working load of the engine rotor is transmitted to the engine casing through the bearing and the supporting member, and the rolling bearing is used in the rotor of the aero-engine because it has the characteristics of small friction factor, small axial size and less oil required for cooling. The gas generator rotor in a certain type of turboshaft aero-engine is supported by two bearings, one of which is a cylindrical roller bearing without a retaining ring on the inner ring. The inner ring of the bearing is assembled on the shaft neck of the gas turbine disc, and the outer ring with rollers and a retainer is assembled in the elastic support assembly, which is fixed in the gas turbine bearing seat. The bearing outer ring and the bearing hole of the elastic support assembly are in interference fit. The most common method for disassembling the bearing outer ring at present is to knock it with a copper rod, which has the potential risk of sudden injury. The bearing outer ring is unevenly stressed due to single-point knocking, which easily causes concentrated stress, potential quality problems of the bearing, and affects the working quality of the engine.

[0003] The patent with the authorized announcement number CN216152262U discloses a bearing outer ring disassembly tool, which comprises a pull rod, a support rod, a lifting claw, a baffle, an upper cover plate and a handle. One end of the support rod is fixed to the bearing installation body, and the other end is installed with the upper cover plate. The baffle is arranged between the upper cover plate and the upper end surface of the bearing, and is connected with the end of the pull rod passing through the threaded hole in the center of the upper cover plate. The pull rod and the upper cover plate are connected through threaded cooperation, and the upper end of the pull rod is provided with a handle. The baffle and the bearing to be disassembled are provided with a lifting claw, the lower end of which is lapped on the lower end surface of the inner ring of the bearing, and the upper end is fixed on the baffle. By rotating the handle, the pull rod drives the baffle to move upward, and the lifting claw drives the bearing outer ring to move upward, so as to separate the bearing outer ring. Such a device can disassemble general bearings, but the end of the elastic support assembly away from the bearing is provided with a ring-shaped protrusion to form a neck. If the lifting claw in the above scheme is inserted into the elastic support assembly from the end away from the bearing, it will be blocked by the ring-shaped protrusion, and if it is inserted into the elastic support assembly from the end provided with the bearing, it will be blocked by the bearing itself, so that the above scheme cannot disassemble the bearing in the part with a neck at one end. SUMMARY

[0004] The present application provides a bearing disassembly device and method to solve the technical problem that the prior art cannot disassemble the bearing in the part with a neck at one end.

[0005] According to one aspect of the present application, a bearing disassembling device is provided, comprising a base, a push rod and a sliding block, the base is used to extend into a part cavity, the push rod is in plug-in connection with the base and pushes the base to provide pressure for disassembling the bearing; the base is provided with a sliding groove perpendicular to the push rod, the sliding block is provided with at least two around the push rod, the sliding block is in sliding connection with the sliding groove, the base is provided with a guide rod parallel to the push rod, the sliding block is provided with a guide groove along the push rod in radial direction and in cooperation with the guide rod; the base and the push rod are provided with a pushing structure, the pushing structure is driven by the push rod to switch the sliding block from a retracted state to an extended state, in the retracted state, the sliding block is close to the push rod, 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; in the extended state, the sliding block is away from the push rod, the projection of the sliding block along the length direction of the push rod exceeds the projection of the base along the length direction of the push rod.

[0006] By using the above technical scheme, when the disassembling device extends into the part of the bearing to be disassembled, the sliding block is in the retracted state, at this time, the diameter of the base is smaller than the minimum diameter of the part opening to facilitate the extension from one end of the opening, when the base moves to the position close to the bearing, the push rod is pushed, the pushing structure is driven by the push rod to switch the sliding block from the retracted state to the extended state, so that the sliding block abuts against the end face of the bearing, at this time, the pressure is continuously applied to the push rod, the pressure acts on the end face of the bearing through the sliding block, so that the bearing is disassembled, and the bearing in the part with the opening at one end can be disassembled.

[0007] Optionally, the base is provided with a plug-in hole, one end of the plug-in hole is provided with a counterbore to form a positioning step, the pushing structure comprises a pushing block provided at the end of the push rod, the diameter of the pushing block is tapered from the end close to the push rod to the end away from the push rod, the end face of the push rod is in cooperation with the positioning step, by driving the push rod to be close to the base until the end face of the push rod is in contact with the positioning step, the pushing block drives the sliding block to switch from the retracted state to the extended state.

[0008] By using the above technical scheme, the pushing block is conical, in the process of being pushed by the push rod, the taper surface of the pushing block pushes the sliding block to move, so that the sliding block slides out of the base, and switches from the retracted state to the extended state, and in the process of continuously pushing the push rod to disassemble the bearing, the pushing block always pushes the end face of the sliding block, so that the sliding block remains stable in the process of disassembling the bearing.

[0009] Optionally, the pushing structure comprises a resilient member provided on the base, the resilient member is in one-to-one correspondence with the sliding block, the resilient member is pre-compressed, so that the tension of the resilient member has a tendency to drive the sliding block to move away from the push rod, the push rod is provided with a locking member to keep the resilient member in a compressed state.

[0010] By adopting the technical scheme, when the slider is in the retracted state, the elastic member is in the compressed state, and the locking member exerts force on the slider to offset the elastic force of the elastic member; when it is necessary to switch the state of the slider, the force of the locking member on the slider is only needed to be removed, and the slider will be extended under the action of the elastic force of the elastic member, and the state of the slider is switched to the extended state.

[0011] Optionally, the locking member is a magnet block, and the slider is metal or a magnet attracted by a magnetic force, and the attraction force between the locking member and the slider keeps the elastic member in the compressed state.

[0012] By adopting the technical scheme, the locking member and the slider are attracted by the magnetic force, the slider compresses the elastic member and keeps stable, when the locking member is misaligned with the slider or the distance therebetween is large, the magnetic force is weakened, at this time, the slider will be extended under the action of the elastic member, and when the locking member is reset, the slider is retracted to compress the elastic member and reset.

[0013] Optionally, the slider is provided with a positioning protrusion used for matching with a bearing positioning groove at one end away from the push rod.

[0014] By adopting the technical scheme, the bearing in the elastic support assembly is provided with a plurality of positioning grooves at the end face, when the bearing is disassembled, the positioning protrusion on the slider is only needed to be matched with the positioning groove on the bearing by rotating the base, so that the bearing keeps moving in the axial direction during the disassembly process, and the rotation does not occur, and the disassembly process is relatively stable.

[0015] Optionally, the base comprises a bottom plate and a sliding plate, the slider is located between the bottom plate and the sliding plate, one end of the guide rod is connected with the bottom plate, and the other end is connected with the sliding plate.

[0016] By adopting the technical scheme, the bottom plate and the sliding plate can guide and support the slider, so that the slider is not easy to be bent and deformed even if a large load is applied during the disassembly process of the bearing, and the stability is relatively high.

[0017] Optionally, the bearing disassembly device further comprises a support seat used for supporting a bearing part to be disassembled, the support seat is formed with a cavity used for accommodating the bearing, and the support seat is provided with an avoidance groove matched with the push rod.

[0018] By adopting the technical scheme, on one hand, the support seat can support the bottom of the part, so that the part is not subjected to a large force during the disassembly of the bearing, and the bottom is not subjected to knocking or tilting; on the other hand, the bearing is dropped in the cavity of the support seat after being disassembled, and is not directly dropped on the ground, so that the risk of damage of the bearing during the disassembly process is reduced, and the avoidance groove can avoid the collision between the push rod and the support seat.

[0019] Optionally, the push rod comprises a fixed part and a movable part, the fixed part is inserted into the base, an elastic support is arranged between the movable part and the fixed part, a connecting rod is arranged on the movable part, and the connecting rod is connected with the locking piece through the fixed part.

[0020] By adopting the above technical scheme, when the slider is in the retracted state, the locking piece is in contact with the slider, and the elastic support is in the initial state; when it is necessary to change the state of the slider, the movable part is pushed to move towards the fixed part, the movable part drives the locking piece to move through the connecting rod, the locking piece is away from the slider, the slider is extended under the action of the elastic support, and the elastic support is compressed at this time; after the pressure applied to the movable part disappears, the movable part is away from the fixed part under the action of the elastic support, and then drives the locking piece to reset, so that the slider is switched from the extended state to the retracted state, and automatic reset can be realized.

[0021] Optionally, a force transmission step is arranged at one end of the movable part close to the fixed part, and the elastic support is a spring surrounding the force transmission step, and the tension of the elastic support leaves a gap between the force transmission step and the fixed part.

[0022] By adopting the above technical scheme, after the movable part moves towards the fixed part to make the locking piece away from the slider, when the movable part continues to move, the force transmission step of the movable part abuts against the fixed part to transmit the pressure, the pressure is transmitted through the rigid force transmission step instead of the elastic support, so that the elastic support is not easy to be damaged due to excessive load in the bearing dismounting process.

[0023] According to another aspect of the present application, a bearing dismounting method for dismounting a bearing in a part with a necked end is also provided, and the method comprises the following steps:

[0024] The push rod is inserted into the base, the slider on the base is compressed and moves towards the push rod under the magnetic force of the magnet block on the push rod, and the slider is switched to the retracted state; the push rod and the base are inserted into the part from the necked end of the part until the base is in contact with the bearing in the part; pressure is applied to the movable part of the push rod to drive the magnet block to move until the magnet block is dislocated from the slider, at this time, the elastic support is reset, the slider is driven to move away from the push rod, and the slider is switched to the extended state; the push rod is rotated to drive the base to rotate, the slider rotates with the base until the positioning protrusion on the slider is matched with the positioning groove on the bearing; and pressure is applied to the push rod to push the bearing in the part out.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. When the bearing disassembling device is inserted into the part of the bearing to be disassembled, the slider is in the retracted state, at this time, the diameter of the base is smaller than the minimum diameter of the part so as to be inserted from the end of the retracted part, when the base is moved to the position close to the bearing, the push rod is pushed, the slider is driven from the retracted state to the extended state under the action of the push rod, and the slider is abutted against the end surface of the bearing, at this time, the pressure is continuously applied to the push rod, the pressure is applied to the end surface of the bearing through the slider, the bearing is disassembled, and the bearing in the part with the retracted end can be disassembled.

[0027] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate preferred embodiments of the application and assist in explaining the application. In the drawings:

[0029] Figure 1 is a structural schematic view of the first preferred embodiment of the bearing disassembling device of the present application;

[0030] Figure 2 is a structural schematic view of the slider in the extended state in the bearing disassembling device of the present application; Figure 1

[0031] Figure 3 is a structural schematic view of the slider in the retracted state in the bearing disassembling device of the present application; Figure 1

[0032] Figure 4 is a schematic view of the second preferred embodiment of the bearing disassembling device of the present application before the first time of applying the pushing force;

[0033] Figure 5 is a schematic view of the second preferred embodiment of the bearing disassembling device of the present application after the first time of applying the pushing force;

[0034] Figure 6 is a flow chart of the bearing disassembling method of the present application.

[0035] LEGEND

[0036] 1. slider; 2. push rod; 21. fixed part; 22. movable part; 23. elastic support; 24. connecting rod; 25. force transmission step; 31. base plate; 32. slide plate; 4. locking member; 5. guide rod; 6. positioning protrusion; 7. support base; 8. push block; 9. elastic member; 10. part; 11. bearing. DETAILED DESCRIPTION

[0037] ​​The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered by the following description.

[0038] The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered by the following description. Figures 1-6 The present application will be described in further detail.

[0039] In a first aspect, the embodiments of the present application disclose a bearing disassembling device. Referring to Figure 1 The bearing disassembling device comprises a base, a push rod 2, a support seat 7 and a sliding block 1. The base is used to extend into the cavity of the part 10. The push rod 2 is in plug-in cooperation with the base and pushes the base to provide the pressure for disassembling the bearing 11. Optionally, the base is a rotary body and the push rod 2 is a cylindrical body coaxial with the base, so that the pressure of the push rod 2 can uniformly act on the bearing 11 in the circumferential direction. The maximum diameter of the base is smaller than the minimum inner diameter of the necked end of the part 10, so that the base can extend into the part 10 from the necked end of the part 10.

[0040] Referring to Figure 1 The base is provided with a sliding groove perpendicular to the push rod 2. The sliding block 1 is provided at least two around the push rod 2. The sliding block 1 is in sliding connection with the sliding groove. The base is provided with a guide rod 5 parallel to the push rod 2. The sliding block 1 is provided with a guide groove in the radial direction of the push rod 2 and matched with the guide rod 5. The sliding block 1 can slide in the direction of the guide groove. Optionally, in order to avoid the rotation of the sliding block 1 in the sliding process, the guide rod 5 is in polygonal cross section. In a specific embodiment, the guide rod 5 is in square cross section. The number of the sliding blocks 1 can be two, three or more. The sliding blocks 1 are uniformly spaced in the circumferential direction of the base, so as to uniformly apply the pressure to the bearing 11.

[0041] In order to keep the sliding block 1 stable when transmitting the pressure, the base comprises a bottom plate 31 and a sliding plate 32. The sliding block 1 is located between the bottom plate 31 and the sliding plate 32. One end of the guide rod 5 is connected with the bottom plate 31 and the other end is connected with the sliding plate 32. The bottom plate 31 and the sliding plate 32 can guide and support the sliding block 1, so that the sliding block 1 is not easy to be bent and deformed even if it is subjected to a large load in the process of disassembling the bearing 11.

[0042] Referring to Figure 2 and Figure 3, the base and the push rod 2 are provided with a pushing structure, the pushing structure drives the slider 1 to switch from the retracted state to the extended state under the action of the push rod 2, in the retracted state, the slider 1 is close to the push rod 2, the projection of the base along the length direction of the push rod 2 covers the projection of the slider 1 along the length direction of the push rod 2; in the extended state, the slider 1 is away from the push rod 2, the projection of the slider 1 along the length direction of the push rod 2 exceeds the projection of the base along the length direction of the push rod 2. After the base extends into the inner cavity of the part 10, the push rod 2 is pressed for the first time, the push rod 2 drives the pushing piece to move, under the action of the pushing piece, the slider 1 extends from the base and contacts the end face of the bearing 11, then the push rod 2 is pressed for the second time, the pressure can be transmitted to the bearing 11 through the slider 1, so that the bearing 11 slides under the action of the pressure and finally separates from the part 10.

[0043] Optionally, in order to avoid rotation of the bearing 11 in the process of sliding, the end of the slider 1 away from the push rod 2 is provided with a positioning protrusion 6 matched with the positioning groove of the bearing 11. When the bearing 11 is disassembled, the positioning protrusion 6 of the slider 1 is clamped in the positioning groove of the bearing 11, and the bearing 11 is axially limited.

[0044] The support seat 7 is used for supporting the part 10 to be disassembled, the support seat 7 is formed with a cavity for accommodating the bearing 11, and the support seat 7 is provided with an avoidance groove matched with the push rod 2. When disassembling, the part 10 is installed on the support seat 7, so that the part 10 can be kept stable, and after the bearing 11 is disassembled, it falls into the cavity in the support seat 7, so as to facilitate collection of the bearing 11.

[0045] The pushing piece has various different setting modes, in a specific embodiment, the pushing structure includes a pushing block 8 arranged at the end of the push rod 2, the pushing block 8 is tapered from the end close to the push rod 2 to the end away from the push rod 2, the end face of the push rod 2 is matched with the positioning step, the pushing block 8 drives the slider 1 to switch from the retracted state to the extended state by driving the push rod 2 to approach the base until the end face of the push rod 2 contacts the positioning step. In order to enable the plurality of sliders 1 to slide synchronously, the pushing block 8 is formed with a conical pushing surface, and the end of each slider 1 contacts the pushing surface. In the process of pressing the push rod 2 for the second time, the pushing block 8 always pushes the end face of the slider 1, so that the slider 1 can be kept stable in the process of disassembling the bearing 11.

[0046] Referring to Figure 4 and Figure 5In another specific embodiment, the pushing structure comprises elastic members 9 arranged on the base, and the elastic members 9 are connected with the sliders 1 one by one. The elastic members 9 are pre-compressed, so that the elastic members 9 have a tendency to drive the sliders 1 to move away from the pushing rod 2. The pushing rod 2 is provided with locking members 4 for keeping the elastic members 9 in the compressed state. When the sliders 1 are in the retracted state, the elastic members 9 are in the compressed state. At this time, the locking members 4 exert a force on the sliders 1 to offset the elastic force of the elastic members 9. When it is necessary to switch the state of the sliders 1, the force of the locking members 4 on the sliders 1 is only needed to be removed, and the sliders 1 will be extended under the action of the elastic force of the elastic members 9, and the state of the sliders 1 is switched to the extended state.

[0047] The locking members 4 are magnet blocks, and the sliders 1 are metals or magnets attracted by magnetic force. The attractive force between the locking members 4 and the sliders 1 keeps the elastic members 9 in the compressed state. Before the pushing rod 2 is pressed for the first time, the locking members 4 and the sliders 1 are attracted by magnetic force, so that the sliders 1 compress the elastic members 9 and keep stable. After the pushing rod 2 is pressed for the first time, the distance between the locking members 4 and the sliders 1 increases, and the magnetic force decreases. At this time, the sliders 1 will be extended under the action of the elastic members 9. When the locking members 4 reset, the locking members 4 will again attract the sliders 1 to retract, so that the sliders 1 compress the elastic members 9 and reset. Optionally, the elastic members 9 are springs.

[0048] Optionally, in order to enable the locking members 4 to reset automatically, the pushing rod 2 comprises a fixed part 21 and a movable part 22. The fixed part 21 is inserted and matched with the base. The movable part 22 is provided with elastic supporting members 23 between the movable part 22 and the fixed part 21. The movable part 22 is provided with a connecting rod 24, and the connecting rod 24 passes through the fixed part 21 and is connected with the locking members 4. When the pushing rod 2 is pressed 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 members 4 to move away from the sliders 1 through the connecting rod 24, so that the sliders 1 are extended under the action of the elastic members 9, and the elastic supporting members 23 are compressed at this time. When the pressure applied to the movable part 22 disappears, the movable part 22 moves away from the fixed part 21 under the action of the elastic supporting members 23, and then drives the locking members 4 to reset, so that the sliders 1 are switched from the extended state to the retracted state, and the automatic reset can be realized.

[0049] In order to avoid that the pressure is applied to the elastic support 23 when the pressure is applied to the push rod 2 for the second time, the optional force transmission step 25 is arranged at the end of the movable part 22 close to the fixed part 21, and the elastic support 23 is a spring surrounding the force transmission step 25, and the tension of the elastic support 23 leaves a gap between the force transmission step 25 and the fixed part 21. When the pressure is applied to the push rod 2 for the first time, the force transmission step 25 is close to 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 in abutment with the fixed part 21 to transmit the pressure, and the pressure is transmitted through the rigid force transmission step 25 instead of the elastic support 23, so that the elastic support 23 is not damaged due to excessive load during disassembly of the bearing 11.

[0050] Referring to Figure 6 In a second aspect, the application further discloses a bearing disassembly method, comprising the following steps:

[0051] In step S100, the push rod is inserted and connected to the base, and the slider in the base is slid to a retracted state. In the retracted state, the slider 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 slider along the length direction of the push rod, so that the base can be inserted into the part from the necked end of the part.

[0052] In step S200, the push rod and the base are inserted into the part from the necked end of the part until the base contacts the bearing in the part.

[0053] In step S300, the push rod is pressed for the first time, the push rod drives the pushing structure to move, and then the slider is slid from the retracted state to an extended state. In the extended state, the slider is away from the push rod, and the projection of the slider along the length direction of the push rod exceeds the projection of the base along the length direction of the push rod, so that the slider is extended from the base and contacts the end surface of the bearing.

[0054] In step S400, the push rod is pressed for the second time, the pressure is transmitted to the bearing through the slider, and the bearing is separated from the part.

[0055] In step S500, the pressure on the push rod is removed, and the slider is switched from the extended state to the retracted state.

[0056] In step S600, the push rod and the base are taken out of the part.

[0057] The above only describes the preferred embodiments of the application and is not used to limit the application. The application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A bearing disassembly device characterized in that, a base for extending into the cavity of a part (10), a push rod (2) and a sliding block (1), the push rod (2) is inserted into the base and pushes the base to provide the pressure for disassembling the bearing (11); a sliding groove perpendicular to the push rod (2) is arranged on the base, at least two sliding blocks (1) are arranged around the push rod (2), the sliding block (1) is slidingly connected in the sliding groove, a guide rod (5) parallel to the push rod (2) is arranged on the base, a guide groove matched with the guide rod (5) is radially arranged on the sliding block (1) along the push rod (2); a pushing structure is arranged on the base and the push rod (2), the pushing structure is driven by the push rod (2) to switch the sliding block (1) from a retracted state to an extended state, in the retracted state, the sliding block (1) is close to the push rod (2), 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); in the extended state, the sliding block (1) is away from the push rod (2), the projection of the sliding block (1) along the length direction of the push rod (2) exceeds the projection of the base along the length direction of the push rod (2); a plug hole is arranged on the base, a counterbore is arranged at one end of the plug hole to form a positioning step, the pushing structure includes a pushing block (8) arranged at the end of the push rod (2), the diameter of the pushing block (8) is tapered from the end close to the push rod (2) to the end away from the push rod (2), the end surface of the push rod (2) is matched with the positioning step, by driving the push rod (2) to be close to the base until the end surface of the push rod (2) is in contact with the positioning step, the pushing block (8) drives the sliding block (1) to switch from the retracted state to the extended state.

2. The bearing disassembly device according to claim 1, characterized in that, the pushing structure includes a spring (9) arranged on the base, the spring (9) is connected with the sliding block (1) one by one, the spring (9) is pre-compressed, the tension of the spring (9) has a tendency to drive the sliding block (1) to move away from the push rod (2), the push rod (2) is provided with a locking piece (4) to keep the spring (9) in a compressed state.

3. The bearing disassembly device according to claim 2, characterized in that, the locking piece (4) is a magnet block, the sliding block (1) is a metal or a magnet attracted by magnetic force, the attraction force between the locking piece (4) and the sliding block (1) keeps the spring (9) in a compressed state.

4. The bearing disassembly device according to claim 1, characterized in that, an end of the sliding block (1) away from the push rod (2) is provided with a positioning protrusion (6) matched with the bearing positioning groove.

5. The bearing disassembly device according to claim 1, characterized in that, the base includes a bottom plate (31) and a sliding plate (32), the sliding block (1) is located between the bottom plate (31) and the sliding plate (32), one end of the guide rod (5) is connected with the bottom plate (31), and the other end is connected with the sliding plate (32).

6. The bearing disassembly device according to claim 1, characterized in that, The bearing disassembling device further comprises a supporting seat (7) for supporting the bearing (11) part (10) to be disassembled, a cavity for accommodating the bearing (11) is formed in the supporting seat (7), and an avoidance slot is arranged on the supporting seat (7) and matched with the push rod (2).

7. The bearing disassembling device according to claim 3, characterized in that, The push rod (2) comprises a fixed part (21) and a movable part (22), the fixed part (21) is matched with the base, an elastic supporting member (23) is arranged between the fixed part (21) and the movable part (22), a connecting rod (24) is arranged on the movable part (22), and the connecting rod (24) is connected with the locking member (4) through the fixed part (21).

8. The bearing disassembling device according to claim 7, characterized in that, The movable part (22) is provided with a force transmission step (25) at one end close to the fixed part (21), the elastic supporting member (23) is a spring surrounding the force transmission step (25), and the tension of the elastic supporting member (23) leaves a gap between the force transmission step (25) and the fixed part (21).

9. A method of bearing disassembly using the bearing disassembly device according to any one of claims 1 to 8 for disassembling a bearing (11) in a part (10) having a necked end, characterized in that, The method comprises the following steps: The push rod (2) is inserted and installed in the base, and the sliding block (1) in the base is slid to the retracted state; The push rod (2) and the base are inserted into the part (10) from the necked end of the part (10) until the base contacts the bearing (11) in the part (10); The push rod (2) is pressed for the first time, the push rod (2) drives the pushing structure to move, and then the sliding block (1) is slid from the retracted state to the extended state; The push rod (2) is pressed 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 removed, and the sliding block (1) is switched from the extended state to the retracted state; The push rod (2) and the base are taken out from the part (10).

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