A device for removing the inner ring of a damaged bearing

Abstract

This invention provides a device for removing the inner ring of a damaged bearing, relating to the field of machine tools. It includes a worktable, a threaded rod mounted above the worktable, a power platform mounted above the worktable, a telescopic sleeve mounted above the power platform, the threaded rod movably mounted on the surface of the telescopic sleeve, a gripper box mounted on the bottom surface of the worktable, a gripper box with several claw hooks arranged in a circular array inside the gripper box, an auxiliary box below the gripper box with a movable block inside, several auxiliary wheels mounted on the surface of the movable block, and inclined grooves formed on the surface of the movable block. A tapered threaded block is provided at the bottom of the auxiliary box, several guide blocks are mounted above the worktable, guide grooves are formed on the bottom surface of the guide blocks, and a push rod is provided below each guide block. This invention achieves efficient and low-damage removal of the bearing inner ring, and integrates a design that allows for self-alignment of the threaded rod with the central axis of the shaft to be removed, vibration-assisted separation, and multi-specification compatibility.

Description

Technical Field

[0001] This invention relates to the field of mechanical tool technology, and in particular to a device for removing a damaged bearing inner ring. Background Technology

[0002] In mechanical maintenance, when a bearing is damaged, its inner ring may sometimes become stubbornly stuck on the shaft and difficult to remove.

[0003] Existing devices for removing damaged bearing inner rings often use three-jaw pullers, hydraulic pullers, or snap ring pullers to remove the damaged bearing inner rings from the shaft. These devices typically lack a self-aligning mechanism, causing the direction of force to deviate from the shaft center, which generates harmful bending moments, significantly increases separation resistance, and exacerbates component wear. Furthermore, a single tool is usually difficult to adapt to different inner ring positions (such as the bearing inner ring being near the shaft end or the middle of the shaft) and shaft dimensions. Replacing the device with one that is suitable for these dimensions would not improve work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for removing the inner ring of a damaged bearing. By setting up a multi-specification adaptation mechanism, a suitable threaded rod can be selected according to the different specifications of the shaft to be removed. During the removal of the damaged inner ring, the threaded rod is kept aligned with the central axis of the shaft to be removed by an auxiliary wheel. The threaded rod generates periodic vibration during the process of squeezing the shaft to be removed by the cooperation of the guide block and the push rod.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A device for removing a damaged bearing inner ring includes a worktable, and a threaded rod is disposed above the worktable, comprising:

[0007] A power platform is provided above the workbench, and a telescopic sleeve is provided above the power platform. The threaded rod is movably disposed on the surface of the telescopic sleeve, and the threaded rod is rotated by the rotation of the telescopic sleeve.

[0008] The bottom surface of the workbench is provided with a gripper box, and the inside of the gripper box is provided with a number of claw hooks arranged in a circular array. The claw hooks are used to hook the inner edge of the bottom end face of the inner ring of the damaged bearing.

[0009] An auxiliary box is provided below the gripper box. Inside the auxiliary box, movable blocks are arranged in a circular array. Several auxiliary wheels are installed on the surface of the movable blocks. An inclined groove is opened on the surface of the movable blocks. A tapered threaded block that mates with the inclined groove is provided at the bottom of the auxiliary box.

[0010] Several guide blocks are arranged in a circular array above the workbench. The bottom surface of each guide block has a guide groove, and a push rod is provided below each guide block. The push rod rotates along the central axis of the bottom surface of the guide block, causing the guide block to reciprocate in the vertical direction, so that the threaded rod vibrates periodically along the axial direction.

[0011] Furthermore, the bottom surface of the power platform is fixedly connected to several support columns in a circular array, and the support columns are fixedly connected to the worktable. The surface of the power platform is fixedly connected to a support platform, and the bottom surface of the support platform is provided with four gears in a circular array. The gears are rotatably connected to the corresponding tubular protrusions on the bottom surface of the support platform through a first bearing. The surface of the power platform is rotatably connected to a gear ring through a second bearing, and all gears are meshed with the gear ring. The telescopic sleeve is fixedly connected to the surface of the gear ring. A drive motor is installed on the surface of the support platform, and the output shaft of the drive motor is fixedly connected to one of the gears through a first reserved hole opened on the surface of the support platform.

[0012] Furthermore, the top of the telescopic sleeve is closed, the bottom surface of the telescopic sleeve is open, a hexagonal prism block is fixedly connected to the top of the threaded rod, a hexagonal prism groove is formed on the upper surface of the telescopic sleeve, the threaded rod is embedded in the hexagonal prism groove through the hexagonal prism block, a first through groove is formed on the surface of the hexagonal prism groove, a threaded cap is threadedly connected to the upper surface of the telescopic sleeve, and the inner top surface of the threaded cap abuts against the hexagonal prism block at the top of the threaded rod.

[0013] Furthermore, the gripper box is fixedly connected to the bottom surface of the workbench, and a plurality of first spring rods are fixedly connected in a circular array inside the gripper box. The claw hooks are respectively fixedly connected to the ends of the corresponding first spring rods. Support blocks are fixedly connected to the surfaces of the first spring rod extension rods, and the support blocks abut against the top and bottom surfaces inside the gripper box.

[0014] Furthermore, the hook portion of the claw is vertically upward, and the bottom surface of the claw is an inclined plane.

[0015] Furthermore, the auxiliary box is threadedly connected to the surface of the gripper box, the moving block is in contact with the inner bottom surface of the auxiliary box and the bottom surface of the gripper box, a plurality of second spring rods are uniformly fixedly connected to the surface of the moving block, and the ends of the second spring rods away from the moving block are fixedly connected to the auxiliary box, the conical threaded block is threadedly connected to the first threaded groove opened on the bottom surface of the auxiliary box, and the interior of the conical threaded block is provided with a curved surface corresponding to the inclined groove.

[0016] Furthermore, a T-shaped threaded cylinder is provided between the workbench and the power platform. The T-shaped threaded cylinder is threaded to the surface of the threaded rod. A hammer cylinder is slidably connected to the surface of the T-shaped threaded cylinder. A first rotating rod is fixedly connected to the bottom surface of each gear. The first rotating rod extends to the bottom of the power platform through a second reserved hole opened on the surface of the power platform. The first rotating rod is rotatably connected to the surface of the workbench through a third bearing. A fixed circular block is fixedly connected to the surface of each first rotating rod. Four second connecting rods are arranged in a circular array on the surface of the T-shaped threaded cylinder. The second connecting rods are rotatably connected to the corresponding fixed circular blocks through a fourth bearing.

[0017] Furthermore, the guide block is rotatably connected to the surface of the corresponding first rotating rod, and four first connecting rods are fixedly connected to the surface of the hammer cylinder in a circular array. The first connecting rods are respectively fixedly connected to the corresponding guide blocks, and a top rod is fixedly connected to the surface of the fixed circular block.

[0018] Furthermore, the guide groove includes at least two inclined surfaces, each of which has a flat surface and a vertical surface on both sides.

[0019] The above-described solution of the present invention has at least the following beneficial effects:

[0020] The above-described solution of the present invention uses a gripper box, a first spring rod, and a claw hook to adaptively hook the damaged inner ring of the shaft to be removed of different specifications. Combined with an auxiliary box, a moving block, an auxiliary wheel, and a tapered threaded block, it applies uniform radial pressure to the outer ring of the bearing, ensuring that the central axis of the shaft to be removed and the threaded rod remain coincident, reducing harmful bending moments during the separation process. Through the cooperation of components such as guide blocks and push rods, the threaded rod generates periodic axial vibration, reducing the separation force threshold. The replaceable threaded rod and the detachable auxiliary box form a modular design to accommodate shafts and damaged inner rings of various sizes. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure provided by the present invention.

[0022] Figure 2 This is a schematic diagram of the drive motor in this invention.

[0023] Figure 3 This is a schematic diagram of the toothed ring in this invention.

[0024] Figure 4 This is a schematic diagram of the gear in this invention.

[0025] Figure 5 This is a schematic diagram of the conical threaded block in this invention.

[0026] Figure 6This is a schematic diagram of the guide block in this invention.

[0027] Figure 7 This is a schematic diagram of the T-shaped threaded cylinder in this invention.

[0028] Figure 8 This is the present invention. Figure 2 Enlarged view of point A in the middle.

[0029] In the diagram: 101, worktable; 102, threaded rod; 103, shaft to be removed; 104, defective inner ring;

[0030] 201. Power platform; 202. Support column; 203. Support platform; 204. Gear; 205. Gear ring; 206. Drive motor; 207. Telescopic sleeve; 208. Hexagonal prism groove; 209. Threaded cap;

[0031] 301. Gripper box; 302. First spring rod; 303. Support block; 304. Claw hook;

[0032] 401. Auxiliary box; 402. Moving block; 403. Auxiliary wheel; 404. Inclined groove; 405. Second spring rod; 406. Conical threaded block;

[0033] 501. First rotating rod; 502. Guide block; 503. Fixed round block; 504. T-shaped threaded cylinder; 505. Hammering cylinder; 506. First connecting rod; 507. Second connecting rod; 508. Top rod; 5021. Inclined part; 5022. Flat part; 5023. Vertical part. Detailed Implementation

[0034] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0035] like Figures 1 to 8 As shown, an embodiment of the present invention provides a device for removing a damaged bearing inner ring, including a worktable 101, and a threaded rod 102 disposed above the worktable 101, comprising:

[0036] A power platform 201 is provided above the workbench 101, and a telescopic sleeve 207 is provided above the power platform 201. The threaded rod 102 is movably disposed on the surface of the telescopic sleeve 207, and the threaded rod 102 is rotated by the rotation of the telescopic sleeve 207.

[0037] The bottom surface of the worktable 101 is provided with a gripper box 301. The inside of the gripper box 301 is arranged in a circular array with several claw hooks 304. The claw hooks 304 are used to hook the inner edge of the bottom end face of the inner ring of the damaged bearing.

[0038] Below the gripper box 301 is an auxiliary box 401. Inside the auxiliary box 401, there are moving blocks 402 arranged in a circular array. Several auxiliary wheels 403 are installed on the surface of the moving blocks 402. A inclined groove 404 is opened on the surface of the moving blocks 402. A tapered threaded block 406 that cooperates with the inclined groove 404 is provided at the bottom of the auxiliary box 401.

[0039] Several guide blocks 502 are arranged in a circular array above the worktable 101. Guide grooves are opened on the bottom surface of the guide blocks 502. A push rod 508 is provided below each guide block 502. The push rod 508 rotates along the central axis of the bottom surface of the guide block 502, so that the guide block 502 reciprocates in the vertical direction, causing the threaded rod 102 to vibrate periodically along the axial direction.

[0040] In this embodiment of the invention, the shaft 103 to be removed with the damaged inner ring of the bearing is inserted upward from the bottom of the tapered thread block 406. During the insertion process, the shaft 103 to be removed will push the moving block 402 with the auxiliary wheel 403 to the periphery of the shaft 103 to be removed, so that the wheel body of the auxiliary wheel 403 is in contact with the shaft 103 to be removed. As the shaft 103 to be removed continues to move upward, the shaft 103 to be removed and the damaged inner ring 104 are pushed to the periphery of the shaft 103 by the inclined surface of the claw hook 304 until the claw hook 304 hooks the inner edge of the bottom end face of the damaged inner ring 104.

[0041] At this time, the shaft to be taken 103 is released, and the tapered threaded block 406 is moved upward inside the auxiliary box 401. The engagement of the tapered threaded block 406 and the inclined groove 404 causes the auxiliary wheel 403 to press towards the shaft to be taken 103. The shaft to be taken 103 remains vertical under the uniform pressing of the auxiliary wheel 403, so that the central axis of the threaded rod 102 and the central axis of the shaft to be taken 103 are kept coincident, thereby reducing harmful bending moment and lowering the threshold of the separation force applied during the separation process of the inner ring of the bad bearing from the screw.

[0042] During the process of pressing down the threaded rod 102, the telescopic sleeve 207 expands and contracts to accommodate threaded rods 102 of different lengths. The spiral downward movement of the threaded rod 102 drives the top rod 508 to move along the guide groove on the bottom surface of the guide block 502, causing the guide block 502 to reciprocate in the vertical direction, thus generating periodic vibrations in the threaded rod 102 in the vertical direction.

[0043] The bottom surface of the power platform 201 is fixedly connected with several support columns 202 in a ring array. The support columns 202 are fixedly connected to the worktable 101. The surface of the power platform 201 is fixedly connected with a support platform 203. The bottom surface of the support platform 203 is arranged with four gears 204 in a ring array. The gears 204 are rotatably connected to the corresponding tubular protrusions on the bottom surface of the support platform 203 through a first bearing. The surface of the power platform 201 is rotatably connected with a gear ring 205 through a second bearing. All gears 204 are meshed with the gear ring 205. The telescopic sleeve 207 is fixedly connected to the surface of the gear ring 205. The surface of the support platform 203 is equipped with a drive motor 206. The output shaft of the drive motor 206 is fixedly connected to one of the gears 204 through a first reserved hole opened on the surface of the support platform 203.

[0044] The top of the telescopic sleeve 207 is closed, and the bottom of the telescopic sleeve 207 is open. A hexagonal prism block is fixedly connected to the top of the threaded rod 102. A hexagonal prism groove 208 is opened on the upper surface of the telescopic sleeve 207. The threaded rod 102 is embedded in the interior of the hexagonal prism groove 208 through the hexagonal prism block. A first through groove is opened on the surface of the hexagonal prism groove 208. A threaded cap 209 is threadedly connected to the upper surface of the telescopic sleeve 207. The inner top surface of the threaded cap 209 abuts against the hexagonal prism block at the top of the threaded rod 102.

[0045] In this embodiment of the invention, the power platform 201 is fixed to the workbench 101 by the support column 202. When removing the inner ring of the damaged bearing, the positional relationship between the shaft 103 to be removed and the damaged inner ring 104 is determined according to the specifications of the lead screw with the damaged inner ring. If the damaged inner ring 104 is located in the middle of the shaft 103 to be removed, a longer threaded rod 102 can be selected. If the threaded rod 102 is located near the end of the surface of the shaft 103 to be removed, a shorter threaded rod 102 can be selected.

[0046] Select a suitable threaded rod 102, unscrew the threaded cap 209 on the surface of the telescopic sleeve 207, so that the threaded rod 102 is vertically inserted into the first through-hole inside the hexagonal prism groove 208 at the top of the telescopic sleeve 207, and the hexagonal block of the threaded rod 102 is fitted into the hexagonal prism groove 208 on the surface of the telescopic sleeve 207. At this time, tighten the threaded cap 209 on the surface of the telescopic sleeve 207, so that the inner top surface of the threaded cap 209 is in close contact with the hexagonal block of the threaded rod 102 to maintain the stability of the threaded rod 102.

[0047] When the threaded rod 102 rotates, the drive motor 206 is started. The operation of the drive motor 206 is transmitted through the gear 204 and the gear ring 205, causing both the gear ring 205 and the gear 204 to rotate. The rotation of the gear ring 205 causes the telescopic sleeve 207 to drive the threaded rod 102 to rotate.

[0048] The gripper box 301 is fixedly connected to the bottom surface of the workbench 101. Inside the gripper box 301, several first spring rods 302 are fixedly connected in a circular array. The claw hooks 304 are fixedly connected to the ends of the corresponding first spring rods 302. Support blocks 303 are fixedly connected to the surfaces of the telescopic rods of the first spring rods 302. The support blocks 303 abut against the top and bottom surfaces inside the gripper box 301.

[0049] The hook part of the claw hook 304 is vertically upward, and the bottom surface of the claw hook 304 is a slope.

[0050] In this embodiment of the invention, during the process of the shaft to be retrieved 103 being inserted into the gripper box 301 from bottom to top, the shaft to be retrieved 103 and the bad inner ring 104 pass through the inclined surface of the claw hook 304, causing the claw hook 304 to move in the direction of squeezing the corresponding first spring rod 302. After the bad inner ring 104 slides past the inclined surface of the claw hook 304, the claw hook 304 moves towards the shaft to be retrieved 103 under the action of the elastic potential energy of the first spring rod 302. At this time, the shaft to be retrieved 103 is moved downward, and the hook part of the claw hook 304 hooks onto the inner edge of the bottom end face of the bad inner ring 104.

[0051] When the threaded rod 102 presses down on the shaft to be removed 103, the support block 303 abuts against the inner top and inner bottom surfaces of the gripper box 301, so that the claw hook 304 on the first spring rod 302 is stably hooked on the bottom of the inner ring 104.

[0052] The auxiliary box 401 is threadedly connected to the surface of the gripper box 301. The moving block 402 is in contact with the inner bottom surface of the auxiliary box 401 and the bottom surface of the gripper box 301. Several second spring rods 405 are uniformly fixedly connected to the surface of the moving block 402. The end of the second spring rod 405 away from the moving block 402 is fixedly connected to the auxiliary box 401. The conical threaded block 406 is threadedly connected to the first threaded groove opened on the bottom surface of the auxiliary box 401. The interior of the conical threaded block 406 is provided with a curved surface corresponding to the inclined groove 404.

[0053] In this embodiment of the invention, during the process of the shaft to be retrieved 103 penetrating the interior of the auxiliary box 401 from bottom to top, the shaft to be retrieved 103 and the inner ring 104 cause the auxiliary wheel 403 to drive the moving block 402 to move in the direction of squeezing the second spring rod 405. When the inner ring 104 is hooked by the claw hook 304, the conical threaded block 406 is screwed upward at the bottom of the auxiliary box 401, so that the curved surface of the conical threaded block 406 continuously squeezes the moving block 402 through the inclined groove 404. Since the moving block 402 is in contact with the inner bottom surface of the auxiliary box 401 and the bottom surface of the claw box 301, the moving block 402 drives the auxiliary wheel 403 to move in the direction of squeezing the shaft to be retrieved 103. Under the uniform squeezing of the auxiliary wheels 403 arranged in a ring around the shaft to be retrieved 103, the shaft to be retrieved 103 remains in a vertical state, which facilitates the squeezing of the threaded rod 102.

[0054] In another preferred embodiment of the present invention, when the shaft to be retrieved 103 is short, the auxiliary box 401 can be rotated and separated on the surface of the gripper box 301, so that the shaft to be retrieved 103 can be directly inserted from the bottom of the gripper box 301.

[0055] A T-shaped threaded cylinder 504 is provided between the workbench 101 and the power platform 201. The T-shaped threaded cylinder 504 is threadedly connected to the surface of the threaded rod 102. A hammer cylinder 505 is slidably connected to the surface of the T-shaped threaded cylinder 504. A first rotating rod 501 is fixedly connected to the bottom surface of the gear 204. The first rotating rod 501 extends to the bottom of the power platform 201 through a second reserved hole opened on the surface of the power platform 201. The first rotating rod 501 is rotatably connected to the surface of the workbench 101 through a third bearing. A fixing block 503 is fixedly connected to the surface of the first rotating rod 501. Four second connecting rods 507 are arranged in a ring array on the surface of the T-shaped threaded cylinder 504. The second connecting rods 507 are rotatably connected to the corresponding fixing block 503 through a fourth bearing.

[0056] The guide block 502 is rotatably connected to the surface of the corresponding first rotating rod 501. The surface of the hammering cylinder 505 is fixedly connected with four first connecting rods 506 in a ring array. The first connecting rods 506 are fixedly connected to the corresponding guide blocks 502 respectively. The surface of the fixed round block 503 is fixedly connected with a top rod 508.

[0057] The guide groove includes at least two inclined surfaces 5021, and each of the inclined surfaces 5021 has a flat surface 5022 and a vertical surface 5023 on both sides.

[0058] In this embodiment of the invention, the threaded rod 102 passes under the power platform 201 and enters the interior of the T-shaped threaded cylinder 504. At this time, the threaded rod 102 is rotated so that the threaded rod 102 is threaded into the interior of the T-shaped threaded cylinder 504. When the telescopic sleeve 207 drives the threaded rod 102 to rotate, the threaded rod 102 moves spirally downward inside the T-shaped threaded cylinder 504. The T-shaped threaded cylinder 504 is kept relatively stationary with the power platform 201 through the second connecting rod 507, the fixed round block 503 and the first rotating rod 501, so as to keep the threaded rod 102 stable during the downward movement, so that the threaded rod 102 is stably coincident with the central axis of the shaft to be taken 103.

[0059] When the drive motor 206 is running, the transmission between the gear 204 and the gear ring 205 causes the first rotating rod 501 to rotate. The rotation of the first rotating rod 501 drives the fixed block 503 to rotate. The rotation of the fixed block 503 causes the push rod 508 to slide continuously along the guide groove at the bottom of the guide block 502. During the sliding process, when the push rod 508 slides along the inclined surface 5021, the guide block 502 moves upward along the surface of the first rotating rod 501. When the push rod 508 slides past the inclined surface 5021 and onto the surface of the vertical surface 5023, the guide block 502 moves downward along the first rotating rod 501 under the action of gravity. When the push rod 508 slides onto the surface of the flat surface 5022, the guide block 502 does not undergo vertical displacement on the surface of the first rotating rod 501.

[0060] When the guide block 502 reciprocates vertically on the surface of the first rotating rod 501, the hammering cylinder 505 moves synchronously with the guide block 502 through the first connecting rod 506. When the guide block 502 falls to the lowest point on the surface of the first rotating rod 501, the hammering cylinder 505 strikes the surface of the T-shaped threaded cylinder 504, causing the threaded rod 102 to vibrate periodically.

[0061] In another preferred embodiment of the present invention, in order to increase the impact force of the hammering cylinder 505 on the T-shaped threaded cylinder 504, the length of the push rod 508 can be adjusted so that when the push rod 508 slides to the surface of the vertical part 5023, the guide block 502 moves downward along the surface of the first rotating rod 501 under the action of gravity until the hammering cylinder 505 impacts the surface of the T-shaped threaded cylinder 504. At this time, the push rod 508 does not contact the flat part 5022. When the push rod 508 slides to the surface of the inclined part 5021, the guide block 502 continues to move upward on the surface of the first rotating rod 501.

[0062] It should be noted that the surface of the gripper box 301 is provided with a flange. When the auxiliary box 401 is tightened on the surface of the gripper box 301, the moving block 402 is in contact with the bottom surface of the gripper box 301 when the auxiliary box 401 and the flange on the surface of the gripper box 301 come into contact.

[0063] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for removing a damaged bearing inner ring, comprising a worktable (101), wherein a threaded rod (102) is disposed above the worktable (101), characterized in that, include: A power platform (201) is provided above the workbench (101), and a telescopic sleeve (207) is provided above the power platform (201). The threaded rod (102) is movably disposed on the surface of the telescopic sleeve (207), and the threaded rod (102) is driven to rotate by the rotation of the telescopic sleeve (207). The bottom surface of the workbench (101) is provided with a gripper box (301), and the inside of the gripper box (301) is provided with a number of claw hooks (304) arranged in a ring array. The claw hooks (304) are used to hook the inner edge of the bottom end face of the inner ring of the damaged bearing. An auxiliary box (401) is provided below the gripper box (301). Inside the auxiliary box (401), movable blocks (402) are arranged in a circular array. Several auxiliary wheels (403) are installed on the surface of the movable blocks (402). An inclined groove (404) is opened on the surface of the movable blocks (402). A conical threaded block (406) that cooperates with the inclined groove (404) is provided at the bottom of the auxiliary box (401). A number of guide blocks (502) are arranged in a circular array above the workbench (101). The bottom surface of the guide block (502) is provided with a guide groove. A push rod (508) is provided below each guide block (502). The push rod (508) rotates along the central axis of the bottom surface of the guide block (502), so that the guide block (502) reciprocates in the vertical direction, so that the threaded rod (102) vibrates periodically along the axial direction. The gripper box (301) is fixedly connected to the bottom surface of the workbench (101). Inside the gripper box (301), a plurality of first spring rods (302) are fixedly connected in a circular array. The claw hooks (304) are fixedly connected to the ends of the corresponding first spring rods (302). Support blocks (303) are fixedly connected to the surfaces of the telescopic rods of the first spring rods (302). The support blocks (303) abut against the top and bottom surfaces inside the gripper box (301).

2. The defective bearing inner ring removal device according to claim 1, characterized in that, The bottom surface of the power platform (201) is fixedly connected with several support columns (202) in a ring array. The support columns (202) are fixedly connected to the worktable (101). The surface of the power platform (201) is fixedly connected with a support platform (203). The bottom surface of the support platform (203) is arranged with four gears (204) in a ring array. The gears (204) are rotatably connected to the corresponding tubular protrusions on the bottom surface of the support platform (203) through a first bearing. The surface of the power platform (201) is rotatably connected with a gear ring (205) through a second bearing. The gears (204) are all meshed with the gear ring (205). The telescopic sleeve (207) is fixedly connected to the surface of the gear ring (205). The surface of the support platform (203) is equipped with a drive motor (206). The output shaft of the drive motor (206) is fixedly connected to one of the gears (204) through a first reserved hole opened on the surface of the support platform (203).

3. The defective bearing inner ring removal device according to claim 2, characterized in that, The top of the telescopic sleeve (207) is closed, and the bottom surface of the telescopic sleeve (207) is open. A hexagonal prism block is fixedly connected to the top of the threaded rod (102). A hexagonal prism groove (208) is opened on the upper surface of the telescopic sleeve (207). The threaded rod (102) is embedded in the interior of the hexagonal prism groove (208) through the hexagonal prism block. A first through groove is opened on the surface of the hexagonal prism groove (208). A threaded cap (209) is threadedly connected to the upper surface of the telescopic sleeve (207). The inner top surface of the threaded cap (209) abuts against the hexagonal prism block at the top of the threaded rod (102).

4. The defective bearing inner ring removal device according to claim 1, characterized in that, The hook portion of the claw (304) is vertically upward, and the bottom surface of the claw (304) is an inclined surface.

5. The defective bearing inner ring removal device according to claim 1, characterized in that, The auxiliary box (401) is threadedly connected to the surface of the gripper box (301). The moving block (402) is in contact with the inner bottom surface of the auxiliary box (401) and the bottom surface of the gripper box (301). A plurality of second spring rods (405) are uniformly fixedly connected to the surface of the moving block (402). The end of the second spring rod (405) away from the moving block (402) is fixedly connected to the auxiliary box (401). The conical threaded block (406) is threadedly connected to the first threaded groove opened on the bottom surface of the auxiliary box (401). The interior of the conical threaded block (406) is provided with a curved surface corresponding to the inclined groove (404).

6. The defective bearing inner ring removal device according to claim 2, characterized in that, A T-shaped threaded cylinder (504) is provided between the workbench (101) and the power platform (201). The T-shaped threaded cylinder (504) is threadedly connected to the surface of the threaded rod (102). A hammer cylinder (505) is slidably connected to the surface of the T-shaped threaded cylinder (504). A first rotating rod (501) is fixedly connected to the bottom surface of each gear (204). The first rotating rod (501) extends to the bottom of the power platform (201) through a second reserved hole opened on the surface of the power platform (201). The first rotating rod (501) is rotatably connected to the surface of the workbench (101) through a third bearing. A fixed round block (503) is fixedly connected to the surface of each first rotating rod (501). Four second connecting rods (507) are arranged in a ring array on the surface of the T-shaped threaded cylinder (504). The second connecting rods (507) are rotatably connected to the corresponding fixed round block (503) through a fourth bearing.

7. The defective bearing inner ring removal device according to claim 6, characterized in that, The guide block (502) is rotatably connected to the surface of the corresponding first rotating rod (501). The surface of the hammering cylinder (505) is fixedly connected with four first connecting rods (506) in a ring array. The first connecting rods (506) are respectively fixedly connected to the corresponding guide block (502). The surface of the fixed round block (503) is fixedly connected with a top rod (508).

8. The defective bearing inner ring removal device according to claim 7, characterized in that, The guide groove includes at least two inclined surfaces (5021), and each of the inclined surfaces (5021) is provided with a flat surface (5022) and a vertical surface (5023) on both sides.

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