Special tool for disassembling shaft sleeve
By designing a shaft sleeve removal tool including clamps, drag arms, clamp beams, overpressure screws and limit blocks, the problems of low disassembly efficiency and easy damage in petrochemical pump equipment are solved, and an efficient and stable disassembly process and a reduction in maintenance cost are achieved.
Patent Information
- Application Number
- CN202420845221.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During the maintenance and maintenance of petrochemical pump equipment, the lack of special sleeve removal tools leads to violent disassembly methods that are usually used, which are inefficient and prone to damage the sleeve and equipment spindle.
A special tool for shaft sleeve removal is designed, including clamps, drag arms, clamp beams, overpressure screws and limit blocks, and the stable disassembly of the shaft sleeve is achieved through threaded connections and limit structures.
The tool can easily adjust the length and spacing of the drag arm, ensure that it is suitable for bushings of different sizes, and reduce dismantling labor intensity and component damage through stable tension and large contact area, and reduce maintenance costs.
Smart Images
Figure CN222779514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petrochemical pump equipment tooling, in particular to a special tool for disassembling a shaft sleeve. Background Art
[0002] The sleeve is one of the indispensable parts in petrochemical pump equipment. The disassembly of the sleeve is inevitable during the inspection and maintenance of related equipment. When repairing and maintaining the existing chemical centrifugal pump seals, bearings and other parts, due to the lack of special sleeve disassembly tools, violent disassembly methods such as copper hammer knocking are usually used for forced disassembly, which is inefficient and can easily cause damage to the sleeve and the main shaft of the equipment, making the maintenance work fail to achieve the expected results. Utility Model Content
[0003] In view of the above problems, the utility model provides a special tool for disassembling a shaft sleeve, which solves the problems of low disassembly efficiency and easy damage of the shaft sleeve.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a special tool for disassembling a sleeve, including a clamp, drag arms are provided on both sides of the clamp, a clamp beam is provided at the other end of the two drag arms, a top pressure screw is provided at the center of the clamp beam, the clamp includes a left clamp flap and a right clamp flap with the same structure and symmetrically arranged, the upper and lower ends of the left clamp flap and the right clamp flap are provided with threaded holes and are connected by a screw and a nut, a connecting hole for connecting the drag arm is provided at the outer longitudinal center of the left clamp flap and the right clamp flap, the drag arm includes a connecting section and a limiting section, the limiting section includes a limiting column and a plurality of limiting blocks evenly distributed on the limiting column, and both ends of the clamp beam are provided with limiting grooves that cooperate with the limiting blocks.
[0005] As an optimization, the connecting hole is provided with an internal thread, and the connecting section is provided with an external thread matching the connecting hole.
[0006] As an optimization, the limiting groove is a T-shaped groove and an opening is provided in the front.
[0007] As an optimization, a through hole with an internal thread is provided at the center of the clamping beam, and an external thread matching with the connecting hole is provided on the top pressing screw.
[0008] As an optimization, a positioning cone is provided at the front end of the top pressure screw.
[0009] The beneficial effects of the utility model are as follows: the utility model provides a special tool for disassembling a shaft sleeve, which can conveniently adjust the distance between the two drag arms and the length of the drag arms to adapt to shaft sleeves of different sizes when in use; the left clamping flap and the right clamping flap are fixed by bolt connection, and the connection is firm, the tension stability is good, the efficiency is high, and the labor intensity of disassembly can be reduced; the contact area with the shaft sleeve is large, which can reduce the probability of damage to parts such as the shaft sleeve, and at the same time reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the structure of the utility model after installation;
[0011] Figure 2 This is a schematic diagram of the structure of the dragging arm of the utility model;
[0012] Figure 3 This is a schematic diagram of the structure of the top pressure screw of the utility model;
[0013] Figure 4 This is a schematic diagram of the clamp beam structure of the utility model;
[0014] Figure 5 This is a schematic diagram of the clamp structure of the utility model.
[0015] Among them: 1. clamp; 2. drag arm; 3. top pressure screw; 4. clamp beam; 1.1. right clamping flap; 1.2. connecting hole; 1.3. nut; 1.4. screw; 2.1. limit block; 2.2. limit column; 4.1. T-slot; 4.2. through hole. DETAILED DESCRIPTION
[0016] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0018] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0019] like Figure 1-5 As shown, a special tool for disassembling a sleeve comprises a clamp 1, and a drag arm 2 is provided on both sides of the clamp 1, and a clamp beam 4 is provided at the other end of the two drag arms 2, and a top pressure screw 3 is provided at the center of the clamp beam 4, and the clamp 1 comprises a left clamp flap and a right clamp flap 1.1 with the same structure and symmetrically arranged. In order to facilitate the adjustment of the spacing between the left clamp flap and the right clamp flap 1.1, the upper and lower ends of the left clamp flap and the right clamp flap 1.1 are provided with threaded holes and are connected by a screw 1.4 and a nut 1.3, and a connecting hole 1.2 for connecting the drag arm 2 is provided at the outer longitudinal center of the left clamp flap and the right clamp flap 1.1, and the drag arm 2 comprises a connecting section and a limiting section, and the limiting section comprises a limiting column 2.2 and a plurality of limiting blocks 2.1 evenly distributed on the limiting column 2.2, and both ends of the clamp beam 4 are provided with limiting grooves cooperating with the limiting blocks 2.1, so as to facilitate the connection and adjustment between the clamp beam 4 and the drag arm 2.
[0020] In order to facilitate the adjustment of the distance between the clamp 1 and the clamp beam 4, the connecting hole 1.2 is provided with an internal thread, and the connecting section is provided with an external thread matching the connecting hole 1.2; the limiting groove is a T-shaped groove 4.1, and an opening is provided in the front.
[0021] A through hole 4.2 with an internal thread is provided at the center of the clamping beam 4, and an external thread matching with the connecting hole 1.2 is provided on the pressing screw 3.
[0022] In order to realize the disassembly of the sleeve, the top pressing screw 3 and the end face of the pump shaft are fixed. A positioning cone is provided at the front end of the top pressing screw 3 so that when the top pressing screw 3 is rotated, the top pressing screw 3 will squeeze the center of the shaft end face. The reaction force between the top pressing screw 3 and the center of the shaft end face is utilized to pull the dragging arm 2 and the clamp 1 to pull the sleeve off the shaft.
[0023] Working principle: The utility model provides a special tool for disassembling the sleeve, which can effectively improve stability. When in use, the left and right clamping petals 1.1 are connected to the drag arm 2 through threaded connection, and the two overall lengths are kept consistent after the connection is completed; the distance between the two drag arms 2 and the length of the drag arm 2 are adjusted to a suitable position by adjusting the different limit blocks 2.1 installed on the drag arm 2 and the position of the limit blocks 2.1 in the limit groove of the clamp beam 4; the positioning cone of the top pressure screw 3 is pressed against the center of the shaft end face, and when the user rotates the top pressure screw 3 with a wrench, the top pressure screw 3 will squeeze the center of the shaft end face, and use the reaction force between the top pressure screw 3 and the center of the shaft end face to pull the drag arm 2 and the clamp 1 to pull the sleeve off the shaft.
[0024] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the product form and style of the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.
Claims
1. A special tool for disassembling a sleeve, characterized by: It includes a clamp, and drag arms are provided on both sides of the clamp, and a clamping beam is provided at the other end of the two dragging arms, and a top pressure screw is provided at the center of the clamping beam. The clamp includes a left clamping flap and a right clamping flap with the same structure and symmetrically arranged, and the upper and lower ends of the left clamping flap and the right clamping flap are provided with threaded holes and are connected by screws and nuts. A connecting hole for connecting the dragging arm is provided at the outer longitudinal center of the left clamping flap and the right clamping flap, and the dragging arm includes a connecting section and a limiting section, and the limiting section includes a limiting column and a plurality of limiting blocks evenly distributed on the limiting column, and both ends of the clamping beam are provided with limiting grooves that cooperate with the limiting blocks.
2. The special tool for disassembling the sleeve according to claim 1, characterized in that: The connecting hole is provided with an internal thread, and the connecting section is provided with an external thread matching the connecting hole.
3. The special tool for disassembling the sleeve according to claim 1, characterized in that: The limiting groove is a T-shaped groove, and an opening is arranged at the front.
4. The special tool for disassembling the sleeve according to claim 1, characterized in that: A through hole with an internal thread is provided at the center of the clamping beam, and an external thread matching with the connecting hole is provided on the top pressing screw.
5. The special tool for disassembling the sleeve according to claim 1, characterized in that: A positioning cone is provided at the front end of the top pressing screw.