Device for disassembling crown block wheel bearing box and bearing and using method of device

Abstract

The invention provides a device for disassembling a crown block wheel bearing box and a bearing, the device is arranged on one side of the crown block wheel bearing to be disassembled, and a lifting mechanism is adjusted to enable a piston rod of a jack to abut against a crown block axle, and the axes of the piston rod and the axle coincide. And according to the specification of the crown block bearing box, the first clamping part and the second clamping part are adjusted, so that the first clamping part and the second clamping part are clamped on the two sides of the bearing box and locked. Thrust is applied to the crown block axle through the piston rod of the jack, and the bearing box is pulled out under the action of the first clamping part and the second clamping part. And the operation is repeated, the first clamping part and the second clamping part are adjusted to be clamped on the two sides of the bearing and locked, thrust is applied to the crown block axle through the jack piston rod, and the bearing is detached under the action of the first clamping part and the second clamping part. The device is simple in structure, convenient, practical, high in efficiency and capable of being used for disassembling bearing boxes and bearings on abandoned crown block wheels of different specifications, protective disassembling is achieved, and it is guaranteed that the disassembled bearings can be used as spare parts.

Description

Technical Field

[0001] The invention relates to the field of installation and maintenance of overhead crane wheels, and in particular to a device for disassembling an overhead crane wheel bearing box and a bearing and a use method thereof. Background Art

[0002] Overhead crane is a crucial equipment in the metallurgical production process. It is a heavy-duty crane designed for the metallurgical industry, mainly used for lifting materials and equipment in the fields of steel, aluminum, non-ferrous metals, etc. The core functions of the overhead crane include efficient lifting, moving and placing, which makes the metallurgical production process faster, more accurate and more efficient. At the same time, the high-precision characteristics of the overhead crane can achieve precise positioning and fine control of materials, which is very important for high-precision operations on the production line, and can ensure production quality and process accuracy. Since the wheels of the overhead crane will inevitably wear out and become scrapped during operation, maintenance staff need to replace the wheels of the overhead crane to continue to maintain the operation of the overhead crane.

[0003] In the prior art, for the replaced and scrapped overhead crane wheels, if the staff want to disassemble the overhead crane wheel bearings, they usually use a crowbar to remove the bearing box, and then use a gas cutting gun to cut off the bearings. This method uses a destructive method to remove the bearings, and thus the bearings cannot be reused, and the disassembly time is long. In addition, the Chinese utility model patent with application number "201220136222.2" discloses a bearing quick disassembly device, including a bearing puller, a storage bracket for the bearing puller, and a shaft storage device, the storage bracket includes a rectangular frame, four legs with wheels are provided at the four corners of the rectangular frame, and a connecting rod for placing the bearing puller is provided on the rectangular frame. The device can only operate on bearings of a specific size and cannot be used to disassemble bearings of different specifications. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a device for disassembling a bearing box and a bearing of an overhead crane wheel and a method of using the device.

[0005] The present invention proposes a device for disassembling a bearing box and a bearing of a crown wheel, comprising a trolley, a fixed bracket, a lifting mechanism, a jack for abutting against a wheel axle, and a clamping mechanism for clamping the bearing, wherein the fixed bracket is fixedly arranged on the trolley, and the lifting mechanism is adjustably arranged on the fixed bracket; the jack is transversely arranged on the lifting mechanism, and the piston rod of the jack can be extended and retracted along the axial direction of the wheel axle; the clamping mechanism comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are movably arranged on the lifting mechanism, the first clamping part and the second clamping part are distributed on both sides of the jack, and the axes of the first clamping part and the second clamping part are in the same horizontal plane as the axis of the jack; the first clamping part and the second clamping part can approach or move away from each other along the radial direction of the jack to achieve clamping or loosening of the bearing box or the bearing; the lifting mechanism drives the clamping mechanism and the jack to move up and down along the fixed bracket.

[0006] Preferably, the lifting mechanism includes an adjusting part, a screw, a locking part and a moving part, the adjusting part is arranged on the fixed bracket, the screw passes through the adjusting part and the top of the fixed bracket in sequence and is connected to the moving part through the locking part, and the jack is arranged on the moving part; the screw is driven to rotate by adjusting the adjusting part, and the screw drives the moving part to move up and down along the fixed bracket.

[0007] Preferably, the adjusting part comprises a base and a wheel handle, the wheel handle is rotatably disposed on the base, the screw rod is connected to the base, and rotating the wheel handle can drive the screw rod to rotate, thereby driving the moving part to move up and down.

[0008] Preferably, the fixed bracket includes a fixed part, a guide rail and a plurality of columns, the columns and the guide rail are both fixedly mounted on the trolley, the columns and the top of the guide rail are both fixedly connected to the fixed part in a vertical direction; the guide rail passes through the movable part, and the movable part can move up and down along the guide rail.

[0009] Preferably, the movable part is provided with a first sliding groove, a second sliding groove and a through hole for the movement of the jack piston rod, and the first sliding groove and the second sliding groove are distributed on both sides of the through hole; the first sliding groove is adapted to the first clamping part, and the first clamping part can move along the first sliding groove; the second sliding groove is adapted to the second clamping part, and the second clamping part can move along the second sliding groove.

[0010] Preferably, the first clamping portion includes a crossbeam, a locking piece and an abutment piece, the locking piece is arranged at one end of the crossbeam, the abutment piece is fixedly arranged at the other end of the crossbeam, the abutment piece and the crossbeam are perpendicular to each other, and the abutment piece can abut against the bearing; the second clamping portion has the same structure as the first clamping portion.

[0011] A method for using the above device for removing a wheel bearing of an overhead traveling vehicle comprises the following steps:

[0012] In the preparation stage, the overhead crane wheel is hoisted to a designated location, and the device is placed on one side of the overhead crane wheel bearing box;

[0013] During the adjustment phase, the lifting mechanism is adjusted to drive the jack and the clamping mechanism to move to a height substantially the same as the wheel axle of the overhead crane, and the lifting mechanism is fine-tuned to make the piston rod of the jack coincide with the axis of the wheel axle; the first clamping part and the second clamping part are adjusted according to the wheel diameter so that the first clamping part and the second clamping part are clamped on both sides of the bearing; the first clamping part and the second clamping part are locked;

[0014] During the dismantling stage, the hydraulic pump connected to the jack is started, so that the piston rod of the jack is extended and abutted against the wheel axle to apply thrust, and the bearing box is removed from the wheel axle under the action of the first clamping part and the second clamping part; after the bearing box is removed, the steps of the adjustment stage are repeated, the piston rod of the jack is abutted against the crown wheel axle, and the first clamping part and the second clamping part are clamped on both sides of the bearing and locked; the jack applies thrust to the wheel axle, and under the action of the first clamping part and the second clamping part, the bearing is pulled out from the wheel axle, and the bearing removal is completed.

[0015] As described above, the present invention relates to a device for disassembling a crown crane wheel bearing box and a bearing and a method for using the device, which has the following beneficial effects:

[0016] The present invention provides a device for disassembling a bearing box and a bearing of a crane wheel. The device is placed on one side of the crane wheel bearing box to be disassembled, and the lifting mechanism is adjusted so that the piston rod of the jack abuts against the crane wheel axle and the axis coincides. Then, according to the specifications of the crane wheel bearing box, the first clamping part and the second clamping part are adjusted so that the first clamping part and the second clamping part are clamped on both sides of the bearing box and locked. The jack is driven so that the piston rod applies thrust to the crane wheel axle, and the bearing box is removed under the action of the first clamping part and the second clamping part. Then, the above operation is repeated, the first clamping part and the second clamping part are adjusted to clamp on both sides of the bearing and locked, and the jack is driven so that the piston rod applies thrust to the crane wheel axle again, and the bearing is removed under the action of the first clamping part and the second clamping part. The present invention also provides a practical method for disassembling a bearing box and a bearing of a crane wheel. The present invention has a simple structure, is convenient and practical, and can be used to disassemble the bearing box and the bearing on discarded crane wheels of different specifications, realize protective disassembly, and ensure that the removed bearing can be used as a spare part. At the same time, the present invention can effectively improve the disassembly efficiency and greatly reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the operation of a device for disassembling a wheel bearing box and a bearing of an overhead travelling crane is provided for an embodiment of the present invention.

[0018] Figure 2 A front view of a device for disassembling a crown crane wheel bearing box and a bearing is provided for an embodiment of the present invention.

[0019] Figure 3 A left side view of a device for disassembling a wheel bearing box and a bearing of an overhead travelling crane is provided in accordance with an embodiment of the present invention.

[0020] Figure 4 A top view of a device for disassembling a wheel bearing box and a bearing of an overhead crane is provided for an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 100, trolley; 200, fixed bracket; 210, fixed part; 220, guide rail; 230, column; 300, lifting mechanism; 310, adjustment part; 311, base; 312, wheel handle; 320, screw; 330, locking part; 340, moving part; 341, first slide groove; 342, second slide groove; 343, through hole; 400, jack; 500, clamping mechanism; 510, first clamping part; 511, crossbeam; 512, locking piece; 513, abutment piece; 520, second clamping part; 600, hydraulic pump. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0025] It should be noted that bearing housings are provided outside the bearings on both sides of the overhead crane wheel to protect the bearings.

[0026] like Figure 1-4As shown, an embodiment of a device for disassembling a wheel bearing box and a bearing of a crane comprises a trolley 100, a fixed bracket 200, a lifting mechanism 300, a jack 400 for abutting against a wheel axle, and a clamping mechanism 500 for clamping a bearing, wherein the fixed bracket 200 is fixedly arranged on the trolley 100, and the lifting mechanism 300 is adjustably arranged on the fixed bracket 200. The jack 400 is transversely arranged on the lifting mechanism 300, and the piston rod of the jack 400 can be extended and retracted along the axial direction of the wheel axle, and the jack 400 is connected to a hydraulic pump 600. The clamping mechanism 500 comprises a first clamping portion 510 and a second clamping portion 520, which are movably arranged on the lifting mechanism 300, and the first clamping portion 510 and the second clamping portion 520 are distributed on both sides of the jack 400, and the axes of the first clamping portion 510 and the second clamping portion 520 are in the same horizontal plane as the axis of the jack. The first clamping portion 510 and the second clamping portion 520 can move closer to or farther from each other along the radial direction of the jack 400 to clamp or release the bearing box or the bearing. The lifting mechanism 300 drives the clamping mechanism 500 and the jack 400 to move up and down along the fixing bracket 200.

[0027] Specifically, the operator can use the trolley 100 to bring the jack 400 and the clamping mechanism 500 close to the scrapped overhead crane wheel, and adjust the lifting mechanism 300 so that the piston rod of the jack 400 is roughly at the same height as the wheel axle of the overhead crane wheel. The hydraulic pump is started to extend the piston rod of the jack 400, and then the lifting mechanism 300 is used to make fine adjustments to ensure that the piston rod of the jack 400 coincides with the axis of the overhead crane wheel axle. The first clamping part 510 and the second clamping part 520 are adjusted radially along the jack 400, and the first clamping part 510 and the second clamping part 520 are clamped on the outer wall of the overhead crane wheel bearing box. At this time, the first clamping part 510, the second clamping part 520 and the axis of the jack 400 are in the same horizontal plane, and the first clamping part 510 and the second clamping part 520 are locked to avoid the first clamping part 510 and the second clamping part 520 causing danger to the operator during the process of disassembling the bearing box and the bearing. The hydraulic pump 600 drives the jack 400, causing the piston rod of the jack 400 to abut against the wheel axle of the overhead crane, and continuously applies thrust to the wheel axle until the first clamping part 510 and the second clamping part 520 pull out the bearing box through the pulling force in opposite directions. After the bearing box is disassembled, the first clamping part 510 and the second clamping part 520 are loosened, and the piston rod of the jack 400 is driven to contract by the hydraulic pump 600, and the first clamping part 510 and the second clamping part 520 are adjusted to clamp on both sides of the bearing and locked. Then, the jack 400 applies thrust to the wheel axle of the overhead crane until the bearing is pulled out of the wheel axle through the first clamping part 510 and the second clamping part 520, thereby avoiding the bearing removed from the scrapped trolley wheel axle by destructive disassembly, and improving the secondary utilization rate of the bearing.

[0028] Furthermore, if Figure 2-4 As shown, the lifting mechanism 300 includes an adjusting part 310, a screw rod 320, a locking part 330 and a moving part 340. The adjusting part 310 is arranged on the top of the fixed bracket 200. The screw rod 320 passes through the adjusting part 310 and the top of the fixed bracket 200 in sequence and is connected to the moving part 340 through the locking part 330. The jack 400 is installed on the moving part 340. The screw rod 320 is driven to rotate by adjusting the adjusting part 310, and the screw rod 320 drives the moving part 340 to move up and down along the fixed bracket 200. Among them, the locking part 330 fixes the end of the screw rod 320 to the moving part 340 in the form of bolt connection.

[0029] Specifically, the operator adjusts the adjusting portion 310 to rotate the screw rod 320, thereby driving the moving portion 340 to rise or fall along the fixed bracket 200, and at the same time driving the jack 400 to move upward until the piston rod axis of the jack 400 coincides with the wheel axle.

[0030] Furthermore, if Figure 2-4 As shown, the adjusting part 310 includes a base 311 and a wheel handle 312. The wheel handle 312 is rotatably disposed on the base 311. The screw rod 320 is connected to the base 311. Rotating the wheel handle 312 can drive the screw rod 320 to rotate, thereby driving the moving part 340 to move up and down.

[0031] Specifically, in order to adjust the position of the jack 400, the operator can rotate the wheel handle 312 to drive the screw rod 320 to rotate, thereby driving the jack 400 to rise or fall, so as to ensure that the piston rod axis of the jack 400 coincides with the wheel axle axis.

[0032] Furthermore, if Figure 2-4 As shown, the fixed bracket 200 includes a fixed portion 210, a guide rail 220 and a plurality of columns 230. The columns 230 and the guide rail 220 are fixedly arranged on the trolley 100 in the vertical direction. The tops of the columns 230 and the guide rail 220 are fixedly connected to the fixed portion 210, so that the fixed bracket 200 is arranged in a rectangular frame style as a whole. The guide rail 220 passes through the moving portion 340, and the moving portion 340 can move up and down along the guide rail 220. Among them, there are preferably two columns 230 (it can be understood that the number of columns is not limited here), and the guide rails 220 are symmetrically distributed on both sides of the moving portion 340 to ensure that the moving portion 340 can drive the jack 400 to move up and down along the guide rail 220, so as to facilitate the adjustment of the positional relationship between the axis of the jack 400 and the axis of the wheel axle.

[0033] Furthermore, if Figure 2As shown, the moving part 340 is provided with a first slide groove 341, a second slide groove 342 and a through hole 343 for the piston rod of the jack to move, and the first slide groove 341 and the second slide groove 342 are distributed on both sides of the through hole 343; the first slide groove 341 is adapted to the first clamping part 510, and the first clamping part 510 can move along the first slide groove 341; the second slide groove 342 is adapted to the second clamping part 520, and the second clamping part 520 can move along the second slide groove 342. Among them, the piston rod of the jack 400 can extend or retract along the through hole 343.

[0034] Specifically, the operator can adjust the first clamping part 510 and the second clamping part 520, move the first clamping part 510 along the first slide groove 341, and move the second clamping part along the second slide groove 342, so that the first clamping part 510 and the second clamping part 520 are clamped on both sides of the crown wheel axle, and can clamp bearing boxes and bearings of different diameters.

[0035] Furthermore, if Figure 4 As shown, the first clamping portion 510 includes a cross beam 511, a locking member 512 and an abutment member 513. The locking member 512 is provided at one end of the cross beam 511, and the abutment member 513 is fixedly provided at the other end of the cross beam 511. The abutment member 513 and the cross beam 511 are perpendicular to each other, and the abutment member 513 can abut against the bearing. The second clamping portion 520 has the same structure as the first clamping portion 510.

[0036] Specifically, when the operator clamps the first clamping part 510 and the second clamping part 520 on both sides of the bearing box or the bearing, the first clamping part 510 and the second clamping part 520 need to be locked by the locking member 512 to prevent the first clamping part 510 and the second clamping part 512 from collapsing from the slide groove when the tension is applied, so as to avoid damage to the operator. The inner side of the crossbeam 511 fits with the two side walls of the bearing box or the bearing, and the inner side wall of the abutment 513 abuts with the outer side wall of the bearing box or the bearing. When the jack 400 applies thrust to the crown wheel shaft, the abutment 513 applies tension in the axial direction and acts on the bearing box or the bearing until the bearing box or the bearing is separated from the crown wheel shaft.

[0037] An embodiment of a method for using a device for disassembling a wheel axle of an overhead travelling vehicle comprises the following steps:

[0038] In the preparation stage, the replaced and scrapped overhead crane wheel is hoisted to the designated location, and the operator pushes the trolley to bring the clamping mechanism on the device closer to the bearing box of the overhead crane wheel to be disassembled.

[0039] During the adjustment stage, the lifting mechanism 300 is adjusted to drive the jack 400 and the clamping mechanism 500 to move to a height substantially the same as that of the overhead crane wheel axle, and the lifting mechanism 300 is fine-tuned to make the piston rod of the jack 400 coincide with the axis of the overhead crane wheel axle; the first clamping portion 510 and the second clamping portion 520 are adjusted to clamp the first clamping portion 510 and the second clamping portion 520 on both sides of the bearing box; the first clamping portion 510 and the second clamping portion 520 are locked to prevent loosening when the first clamping portion 510 and the second clamping portion 520 apply tension to the bearing box or the bearing.

[0040] During the dismantling stage, start the hydraulic pump 600 connected to the jack, so that the piston rod of the jack 400 extends out and abuts against the wheel axle to apply thrust, and the bearing box is removed from the wheel axle under the action of the first clamping part 510 and the second clamping part 520. After the bearing box is removed, repeat the steps of the adjustment stage, loosen the first clamping part 510 and the second clamping part 520, abut the piston rod of the jack 400 against the end of the crown wheel axle, clamp the first clamping part 510 and the second clamping part 520 on both sides of the bearing and lock it. Start the hydraulic pump 600, apply thrust to the wheel axle through the piston rod of the jack 400, and pull the bearing out of the wheel axle under the action of the first clamping part 510 and the second clamping part 520 to complete the bearing removal. In case of emergency, the removed bearing can be used as a spare part.

[0041] In summary, the present invention has a simple structure, is convenient and practical, and can be used to disassemble bearing boxes and bearings on abandoned overhead crane wheels of different specifications, achieving protective disassembly to ensure that the disassembled bearings can be reused. At the same time, the present invention can effectively improve disassembly efficiency and significantly reduce costs.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A device for disassembling the bearing box and bearing of a crown crane wheel, It is characterized in that The invention comprises a trolley (100), a fixed support (200), a lifting mechanism (300), a jack (400) for contacting a wheel axle, and a clamping mechanism (500) for clamping a bearing, wherein the fixed support (200) is fixedly arranged on the trolley (100), and the lifting mechanism (300) is adjustably arranged on the fixed support (200); the jack (400) is transversely arranged on the lifting mechanism (300), and the piston rod of the jack (400) can be extended and retracted along the axial direction of the wheel axle; the clamping mechanism (500) comprises a first clamping portion (510) and a second clamping portion (520), wherein the first clamping portion (510) and the second clamping portion (520) are The holding portion (520) is movably arranged on the lifting mechanism (300); the first clamping portion (510) and the second clamping portion (520) are distributed on both sides of the jack (400); the axes of the first clamping portion (510) and the second clamping portion (520) are in the same horizontal plane as the axis of the jack; the first clamping portion (510) and the second clamping portion (520) can approach or move away from each other along the radial direction of the jack (400) to achieve clamping or loosening of the bearing box or the bearing; the lifting mechanism (300) drives the clamping mechanism (500) and the jack (400) to move up and down along the fixed bracket (200).

2. The device for disassembling the bearing box and bearing of the overhead crane wheel according to claim 1, It is characterized in that The lifting mechanism (300) comprises an adjusting part (310), a screw rod (320), a locking part (330) and a moving part (340); the adjusting part (310) is arranged on the fixed bracket (200); the screw rod (320) passes through the adjusting part (310) and the top of the fixed bracket (200) in sequence and is connected to the moving part (340) through the locking part (330); the jack (400) is arranged on the moving part (340); the screw rod (320) is driven to rotate by adjusting the adjusting part (310), and the screw rod (320) drives the moving part (340) to move up and down along the fixed bracket (200).

3. The device for disassembling the bearing box and bearing of the overhead crane wheel according to claim 2, It is characterized in that The adjusting portion (310) comprises a base (311) and a wheel handle (312); the wheel handle (312) is rotatably disposed on the base (311); the screw rod (320) is connected to the base (311); rotating the wheel handle (312) can drive the screw rod (320) to rotate, thereby driving the moving portion (340) to move up and down.

4. The device for disassembling the bearing box and bearing of the overhead crane wheel according to claim 2, It is characterized in that The fixed bracket (200) comprises a fixed portion (210), a guide rail (220) and a plurality of columns (230); the columns (230) and the guide rail (220) are both fixedly arranged on the trolley (100) in a vertical direction; the tops of the columns (230) and the guide rail (220) are both fixedly connected to the fixed portion (210); the guide rail (220) passes through the movable portion (340), and the movable portion (340) can move up and down along the guide rail (220).

5. The device for disassembling the bearing box and bearing of the overhead travelling crane wheel according to claim 2 or 4, It is characterized in that The movable portion (340) is provided with a first sliding groove (341), a second sliding groove (342) and a through hole (343) for the jack piston rod to move, and the first sliding groove (341) and the second sliding groove (342) are distributed on both sides of the through hole (343); the first sliding groove (341) is adapted to the first clamping portion (510), and the first clamping portion (510) can move along the first sliding groove (341); the second sliding groove (342) is adapted to the second clamping portion (520), and the second clamping portion (520) can move along the second sliding groove (342).

6. The device for disassembling the bearing box and bearing of the overhead travelling vehicle wheel according to claim 5, It is characterized in that The first clamping portion (510) comprises a cross beam (511), a locking member (512) and an abutting member (513); the locking member (512) is arranged at one end of the cross beam (511), and the abutting member (513) is fixedly arranged at the other end of the cross beam (511); the abutting member (513) and the cross beam (511) are perpendicular to each other, and the abutting member (513) can abut against the bearing; the second clamping portion (520) has the same structure as the first clamping portion (510).

7. A method of using the device for disassembling a crown crane wheel bearing box and a bearing according to claim 1, It is characterized in that The following steps are involved: In the preparation stage, the overhead crane wheel is hoisted to a designated location, and the device is placed on one side of the overhead crane wheel bearing box to be disassembled; In the adjustment stage, the lifting mechanism (300) is adjusted to drive the jack (400) and the clamping mechanism (500) to move to a height substantially the same as the wheel axle of the overhead crane, and the lifting mechanism (300) is finely adjusted to make the piston rod of the jack (400) coincide with the axis of the wheel axle of the overhead crane; Adjusting the first clamping part (510) and the second clamping part (520) so that the first clamping part (510) and the second clamping part (520) are clamped on both sides of the bearing box; locking the first clamping part (510) and the second clamping part (520); During the dismantling stage, the hydraulic pump connected to the jack is started, so that the piston rod of the jack (400) is extended and abuts against the wheel axle to apply thrust, and the bearing box is removed from the wheel axle under the action of the first clamping part (510) and the second clamping part (520); after the bearing box is removed, the steps of the adjustment stage are repeated, the piston rod of the jack is abutted against the crown wheel axle, and the first clamping part (510) and the second clamping part (520) are clamped on both sides of the bearing and locked; the jack (400) applies thrust to the wheel axle, and under the action of the first clamping part (510) and the second clamping part (520), the bearing is pulled out from the wheel axle, and the bearing removal is completed.

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