Shaft sleeve dismounting device

Abstract

The utility model relates to the technical field of mechanical equipment maintenance, and discloses a shaft sleeve dismounting device which comprises a positioning ring, a protective sleeve, a pulling frame, a pulling shaft, a reduction gearbox, a driving device and a supporting frame. The shaft sleeve to be disassembled is sleeved with the protective sleeve. And the positioning ring sleeves the outer side surface of the protective sleeve. The pulling frame is connected with the outer side of the positioning ring. And the pulling shaft is in threaded connection with the pulling frame. A reduction gearbox is arranged on the top of the supporting frame. The reduction gearbox comprises an input end and an output end. The driving device comprises a fixed end and a driving end. The driving device fixed end is connected with the top of the support. The driving end of the driving device is connected with the input end of the reduction gearbox. The output end of the reduction gearbox is connected with the top of the pulling shaft. The utility model has the advantages of fast positioning, convenient installation and strong interchangeability. The expansion type shaft sleeve can be flexibly clamped, stable disassembling torque and constant disassembling speed are achieved through driving of the driving device and speed changing of the reduction gearbox, the shaft sleeve is greatly protected, and the shaft sleeve is prevented from being broken in the disassembling process.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment maintenance, and specifically relates to a bushing disassembly device. Background Technique

[0002] At present, most shaft transmission systems are composed of a bushing and a bearing in cooperation. In the selection of the bushing, an expansion structure is mostly adopted, that is, an expansion ring is used between the bushing and the shaft, and the bushing is tightened by the principle of expansion.

[0003] This kind of connection structure is very inconvenient when maintaining the whole machine and disassembling the bushing. Because there is an expansion ring to tighten between the bushing and the shaft, the disassembly force required for the bushing is very large. And the bushing material is mostly made of cemented carbide or silicon carbide, which has a high hardness and is very brittle at the same time. Uneven force or uneven pulling speed during the disassembly process can cause the bushing to break.

[0004] In order to solve the above problems, we propose a bushing disassembly device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bushing disassembly device to solve the problems proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A bushing disassembly device includes a positioning ring, a protective sleeve, a pulling frame, a pulling shaft, a reduction gearbox, a driving device, and a support frame.

[0007] The protective sleeve is sleeved on the bushing to be disassembled. The positioning ring is sleeved on the outer side of the protective sleeve. The pulling frame is connected to the outer side of the positioning ring. The pulling shaft is threadedly connected to the pulling frame. The reduction gearbox is provided at the top of the support frame. The reduction gearbox includes an input end and an output end. The driving device includes a fixed end and a driving end. The fixed end of the driving device is connected to the top of the support frame. The driving end of the driving device is connected to the input end of the reduction gearbox. The output end of the reduction gearbox is connected to the top of the pulling shaft.

[0008] Preferably, the driving end of the driving device is connected to the input end of the reduction gearbox through the coupling.

[0009] Preferably, the reduction gearbox includes a worm gear, a worm, and a box body. The box body is arranged on the support frame. The worm gear and the worm are both arranged in the box body. The worm gear is sleeved on the top of the pulling shaft. One end of the worm is engaged with the worm gear. The other end of the worm is connected to the driving device.

[0010] Preferably, a centering center point is provided at the bottom of the support frame. The centering center point is located directly below the pulling shaft. The axis of the centering center point coincides with the axis of the pulling shaft.

[0011] Preferably, a cage is provided on the support frame. The cage is connected to the side wall of the positioning ring.

[0012] Preferably, U-shaped claws are provided at both ends of the cage. The U-shaped claws of the cage are slidably connected to the support frame.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model has the advantages of fast positioning, convenient installation, and strong interchangeability. It can flexibly clamp an expansion type bushing, and through the drive of a drive device and speed reduction by a speed reducer, it can achieve stable disassembly torque and uniform disassembly speed, greatly protecting the bushing and avoiding the fragmentation of the bushing during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic main sectional view of the structure of the present utility model;

[0016] Figure 2 is a first isometric view of the structure of the present utility model;

[0017] Figure 3 is a second isometric view of the structure of the present utility model.

[0018] In the figure: 1 - positioning ring, 2 - protective sleeve, 3 - extraction frame, 4 - extraction shaft, 5 - speed reducer, 51 - worm gear, 52 - worm, 53 - housing, 6 - coupling, 7 - drive device, 8 - centering tip, 9 - cage, 10 - support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , the present utility model provides a technical solution: a bushing disassembly device, including a positioning ring 1, a protective sleeve 2, an extraction frame 3, an extraction shaft 4, a speed reducer 5, a drive device 7, and a support frame 10.

[0021] The protective sleeve 2 is sleeved on the sleeve to be disassembled. The positioning ring 1 is sleeved on the outer side surface of the protective sleeve 2. The extraction frame 3 is connected to the outer side surface of the positioning ring 1. The extraction shaft 4 is threadedly connected to the extraction frame 3. The top of the support frame 10 is provided with the reduction gearbox 5. The reduction gearbox 5 includes an input end and an output end. The driving device 7 includes a fixed end and a driving end. The fixed end of the driving device 7 is connected to the top of the support frame 10. The driving end of the driving device 7 is connected to the input end of the reduction gearbox 5. The output end of the reduction gearbox 5 is connected to the top of the extraction shaft 4.

[0022] The positioning ring 1 is provided with an asymmetric threaded hole and a locking opening, and is locked by a pair of bolts. The protective sleeve 2 is made of a flexible material and is provided with a locking opening, and is connected to the positioning ring 1 by bolts. The extraction frame 3 is connected to the positioning ring 1 and the protective sleeve 2 by bolts. The inner side of the top of the extraction frame 3 is provided with a T-shaped thread, and the outer side surface of the extraction shaft 4 is provided with a T-shaped thread, and the extraction frame 3 is threadedly connected to the extraction shaft 4.

[0023] The driving device 7 is a servo motor.

[0024] Further, the driving end of the driving device 7 is connected to the input end of the reduction gearbox 5 through the coupling 6.

[0025] Further, the reduction gearbox 5 includes a worm gear 51, a worm 52 and a box body 53. The box body 53 is arranged on the support frame 10. The worm gear 51 and the worm 52 are both arranged in the box body 53. The worm gear 51 is sleeved on the top of the extraction shaft 4. One end of the worm 52 meshes with the worm gear 51. The other end of the worm 52 is connected to the driving device 7.

[0026] One end of the coupling 6 is connected to the worm 52, and the other end of the coupling 6 is connected to the driving end of the driving device 7. The driving device 7 is connected to the top plate of the support frame 10 by bolts and is centered with the axis of the worm 52. The centering center point 8 is connected to the bottom plate of the support frame 10 by bolts, and the centering center point 8 is centered with the axis of the worm gear 51.

[0027] Further, the bottom of the support frame 10 is provided with a centering center point 8. The centering center point 8 is located directly below the extraction shaft 4. The axis of the centering center point 8 coincides with the axis of the extraction shaft 4.

[0028] Further, a cage 9 is arranged on the support frame 10. The cage 9 is connected to the side wall of the positioning ring 1.

[0029] Further, U-shaped claws are provided at both ends of the cage 9. The U-shaped claws of the cage 9 are slidably connected to the support frame 10. The U-shaped claws of the cage 9 slide on the columns of the support frame 10.

[0030] Working principle:

[0031] First, assemble all components, and temporarily do not tighten the locking bolts of the positioning ring 1. First, drive the pulling shaft 4 to lift the pulling frame 3, and place the shaft sleeve shafting to be disassembled on the centering center point 8. Put the protective sleeve 2 on the outer diameter of the shaft sleeve to be disassembled, and tighten the bolts on the positioning ring 1. At this time, turn on the driving device 7, and adjust the rotation speed of the driving device 7 through the stepless speed changer. The driving device 7 drives the coupling 6 to transfer kinetic energy to the worm 52, and the worm 52 and the worm gear 51 are in a speed reduction ratio transmission. Under the drive of the worm 52, a rotational torque begins to appear on the pulling shaft 4 and the pulling frame 3.

[0032] Since the pulling frame 3 is connected to the positioning ring 1, and the positioning ring 1 is connected to the cage 9, the cage 9 can only perform reciprocating linear motion up and down on the columns of the support frame 10. This causes the pulling frame 3 not to rotate while the pulling shaft 4 rotates, and a relative rotation is generated between the pulling frame 3 and the pulling shaft 4, realizing the axial pulling of the shaft sleeve to be disassembled. The driving device 7 drives the speed reducer 5 to change the speed, and successfully transfers the torque to the pulling shaft 4. The pulling shaft 4 transfers kinetic energy to the pulling frame. Through the connection of the positioning ring 1 and the cage 9, the U-shaped claws at both ends of the cage 9 are slidably connected to the columns of the support frame 10, realizing the axial displacement between the protective sleeve 2 and the shaft sleeve to be disassembled, and realizing the disassembly of the shaft sleeve.

[0033] The utility model has the advantages of rapid positioning, convenient installation, and strong interchangeability. It can flexibly clamp the shaft sleeve to be disassembled. Through the drive of the driving device 7 and the speed change of the speed reducer 5, it realizes stable disassembly torque and uniform disassembly speed, greatly protecting the shaft sleeve to be disassembled and avoiding the fragmentation of the shaft sleeve during the disassembly process.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sleeve disassembly device, characterized in that: It comprises a positioning ring (1), a protective sleeve (2), a lifting frame (3), a lifting shaft (4), a reduction box (5), a driving device (7) and a supporting frame (10); The protective sleeve (2) is sleeved on the shaft sleeve to be removed; the positioning ring (1) is sleeved on the outer side of the protective sleeve (2); the lifting frame (3) is connected to the outer side of the positioning ring (1); the lifting shaft (4) is threadedly connected to the lifting frame (3); the reduction box (5) is provided on the top of the support frame (10); the reduction box (5) includes an input end and an output end; the driving device (7) includes a fixed end and a driving end; the fixed end of the driving device (7) is connected to the top of the support frame (10); the driving end of the driving device (7) is connected to the input end of the reduction box (5); and the output end of the reduction box (5) is connected to the top of the lifting shaft (4).

2. A sleeve removal device according to claim 1, characterized in that: The driving end of the driving device (7) is connected to the input end of the reduction box (5) via the coupling (6).

3. A sleeve removal device according to claim 1, characterized in that: The reduction box (5) comprises a worm wheel (51), a worm (52) and a housing (53); the housing (53) is arranged on the support frame (10); the worm wheel (51) and the worm (52) are both arranged in the housing (53); the worm wheel (51) is sleeved on the top of the pulling shaft (4); one end of the worm (52) is meshed with the worm wheel (51); and the other end of the worm (52) is connected to the driving device (7).

4. A sleeve removal device according to claim 1, characterized in that: A centering tip (8) is provided at the bottom of the support frame (10); the centering tip (8) is located directly below the pulling shaft (4); and the axis of the centering tip (8) coincides with the axis of the pulling shaft (4).

5. A sleeve removal device according to claim 1, characterized in that: A retaining frame (9) is provided on the support frame (10); the retaining frame (9) is connected to the side wall of the positioning ring (1).

6. A shaft sleeve removal device according to claim 5, characterized in that: U-shaped claws are provided at both ends of the retaining frame (9); the U-shaped claws of the retaining frame (9) are slidably connected to the supporting frame (10).

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