A special tool for dismounting compressor main motor pulley
Patent Information
- Application Number
- CN202522027222.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-09-22
AI Technical Summary
传统拆卸方法通常采用气焊加热辅助人力撬动，不仅费时费力效率低，同时操作安全性差，易造成人员伤害或设备损坏
与现有技术相比，本实用新型通过采用由背对背焊接U型槽钢构成的主支撑架、双头螺杆配合挡板的夹持结构以及液压千斤顶的顶推设计，实现了对压缩机主电机皮带轮的快速、平稳拆卸，有效避免了传统气焊加热和人力撬动方式所带来的效率低下、安全风险高及易损坏设备的问题；进一步地，通过在支撑架顶部设置带反向丝杆和导向杆的滑块夹紧机构，显著增强了拆卸过程中的稳定性和适应性，尤其适用于大尺寸、高过盈配合皮带轮的拆卸作业。
Smart Images
Figure CN224867226U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of mechanical disassembly tools, specifically relating to a special tool for disassembling the main motor pulley of a compressor. Background Technology
[0002] Currently, due to their special structure and large size, compressor main motor pulleys (such as model 1114-JC, 200kW, 6000V) lack matching professional pulling tools on the market. Traditional disassembly methods typically involve gas welding for heating and manual prying, which is not only time-consuming and labor-intensive with low efficiency, but also has poor operational safety, easily causing personal injury or equipment damage. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model designs a special tool for disassembling the main motor pulley of a compressor, so as to improve the efficiency and safety of pulley disassembly.
[0004] This utility model discloses a special tool for disassembling the main motor pulley of a compressor, comprising a main support frame, a screw, and a hydraulic jack. The main support frame is composed of two U-shaped channel steel webs welded together by welding blocks, with a gap between the U-shaped channel steel webs for the screw to pass through. The screw passes through both sides of the main support frame, with one end secured to the pulley spokes by a baffle and nut, and the other end passing through the main support frame and fixed by a nut. The hydraulic jack is positioned between the main support frame and the end face of the motor shaft.
[0005] The main support frame has welded plates at both ends of its top, and a guide rod and a lead screw are provided between the two plates. The lead screw has a centrally symmetrical reverse thread section, and one end is connected to a driving device. Two sliders are symmetrically arranged on the lead screw and the guide rod. The sliders are connected to the clamping plate through a bracket. The driving device drives the clamping plate to move synchronously to clamp or release the pulley.
[0006] The inner side of the clamp is provided with a rubber layer to enhance friction with the surface of the pulley and prevent damage.
[0007] The driving device is a manual handle or a drive motor.
[0008] The beneficial effects of this utility model are: Compared with existing technologies, this utility model achieves rapid and smooth disassembly of the compressor main motor pulley by adopting a main support frame made of back-to-back welded U-shaped channel steel, a clamping structure with double-headed screws and baffles, and a hydraulic jack pushing design. This effectively avoids the problems of low efficiency, high safety risks, and easy equipment damage caused by traditional gas welding heating and manual prying methods. Furthermore, by setting a slider clamping mechanism with a reverse screw and guide rod on the top of the support frame, the stability and adaptability of the disassembly process are significantly enhanced, making it particularly suitable for disassembly operations of large-size, high interference fit pulleys. Attached Figure Description
[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.
[0010] Figure 1 This is a schematic diagram of the overall structure of the disassembly tool in Example 1.
[0011] Figure 2 This is a schematic diagram illustrating the use of the special disassembly tool in Example 1.
[0012] Figure 3 This is a schematic diagram of the overall structure of the disassembly tool in Example 2.
[0013] Figure 4 This is a schematic diagram illustrating the use of the special disassembly tool in Example 2.
[0014] In the attached diagram, the structural names represented by each number are as follows: 1-Screw, 2-Channel steel, 3-Baffle, 4-Nut, 5-Pulley, 6-Hydraulic jack, 7-Side plate, 8-Guide rod, 9-Screw rod, 901-Handle, 10-Slider, 11-Bracket, 12-Clamping plate, 13-Spoke, 14-Motor shaft, 15-Hub. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] Example 1 See Figure 1 As shown, a special tool for disassembling the main motor pulley of a compressor is provided, including a main support frame, a screw 1, a baffle 3, and a hydraulic jack 6.
[0017] The main support frame is formed by welding the webs of two U-shaped channel steels 2 together with weld blocks. A gap is left between the webs of the U-shaped channel steels 2 for the screw rod 1 to pass through. The screw rod 1 is a double-threaded rod. Its front end is fixed to the baffle 3 by the nut 4 and is used to hook the spoke 13 of the pulley 5. The rear end of the screw rod 1 passes through the main support frame and is locked and fixed by the baffle 3 and the nut 4.
[0018] like Figure 2As shown, when disassembling pulley 5, two screws 1 are passed through the spokes 13 on both sides of pulley 5 respectively, and baffles 3 are placed between adjacent spokes 13. The other end of the screws 1 passes through the gap between the web plates of the main support frame channel steel 2 and is fixed with baffles 3 and nuts 4, so that the distance between the main support frame and the end face of the motor shaft 14 is fixed. The hydraulic jack 6 is placed between the support frame and the end face of the motor shaft 14. The hydraulic jack 6 is started, and the hub 15 of pulley 5 is pushed out of the motor shaft 14 by the pushing action of the jack 6, so as to achieve smooth disassembly of pulley 5. The whole process does not require heating or impact operation, which significantly improves work efficiency and safety.
[0019] Example 2 Based on Example 1, in order to improve the stability during the disassembly process, refer to... Figure 3 and Figure 4 As shown, shrouds 7 are welded to both ends of the top of the main support frame. Guide rods 8 and lead screws 9 are arranged parallel to each other between the shrouds 7. The lead screw 9 has threads with opposite directions of rotation from the center to both ends, and one end of the lead screw 9 extends out of the shroud 7 and is connected to a manually operable handle 901 or an electric drive device. Two sets of sliders 10 are symmetrically mounted on the lead screw 9 and guide rods 8. The sliders 10 are connected to the clamping plate 12 through the bracket 11. A rubber layer is bonded to the inner side of the clamping plate 12 to increase friction and protect the surface of the pulley 5.
[0020] The rotating lead screw 9 drives the two sliders 10 to move synchronously in opposite directions, thereby adjusting the clamping force of the clamping plate 12 on the pulley 5 and ensuring a stable connection between the tool and the pulley 5. During the pushing process of the hydraulic jack 6, this structure effectively suppresses tool vibration and slippage, and is especially suitable for disassembling high-power motor high interference fit pulleys 5, further improving the applicability and reliability of the tool.
[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.
Claims
1. A special tool for disassembling the main motor pulley of a compressor, comprising a main support frame, a screw (1), and a hydraulic jack (6), characterized in that, The main support frame is made of two U-shaped channel steels (2) with their webs welded together by welding blocks. A gap is left between the webs of the U-shaped channel steels for the screw (1) to pass through. The screw (1) passes through both sides of the main support frame. One end of the screw is locked with a nut (4) through a baffle (3) to hook the spoke (13) of the pulley (5). The other end passes through the main support frame and is fixed by the nut (4). The hydraulic jack (6) is set between the main support frame and the end face of the motor shaft.
2. The special tool for disassembling the compressor main motor pulley according to claim 1, characterized in that, The main support frame has welded circumference plates (7) at both ends of the top. A guide rod (8) and a lead screw (9) are provided between the two circumference plates (7). The lead screw (9) has a centrally symmetrical reverse thread section and a drive device is connected to one end. Two sliders (10) are symmetrically arranged on the lead screw (9) and the guide rod (8). The sliders (10) are connected to the clamping plate (12) through the bracket (11). The drive device drives the clamping plate (12) to move synchronously to clamp or release the pulley (5).
3. The special tool for disassembling the compressor main motor pulley according to claim 2, characterized in that, The inner side of the clamp (12) is provided with a rubber layer.
4. The special tool for disassembling the compressor main motor pulley according to claim 3, characterized in that, The driving device is a manual handle (901) or a drive motor.