Special device for drawing coupler
By designing a special device for coupling disassembly, the problem of low coupling disassembly efficiency and inability to adapt to different sizes in the prior art is solved, and efficient and convenient coupling disassembly is achieved, reducing maintenance costs and time.
Patent Information
- Application Number
- CN202420879442.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-25
AI Technical Summary
It is difficult to efficiently disassemble the coupling in the prior art, especially in larger couplings, which requires multiple people to cooperate and measure the size on site, resulting in long maintenance time, high strength and inability to reuse.
A special device including a base, a roller bearing, a vertical moving device and a hook grappling device is designed. The roller bearing and a redirection wheel are used to achieve convenient movement, and the vertical moving device and a hook grappling device are used to achieve multi-dimensional adjustment and disassembly of couplings of different sizes.
It realizes efficient disassembly of couplings, reduces labor intensity for workers, saves labor costs, improves maintenance and inspection efficiency, and supports the disassembly of couplings of different sizes.
Smart Images
Figure CN222589632U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coupling disassembly equipment, and in particular relates to a special device for pulling a coupling. Background Art
[0002] Couplings are mainly used to connect the driving shaft and the driven shaft in different mechanisms so that they rotate together and transmit torque. During equipment maintenance, couplings often need to be removed, replaced, and installed. Couplings and shafts mostly use interference fit and cannot be directly pulled out by manpower. After heating, using a hammer to hit the non-matching surface and working surface will cause damage to the equipment. Therefore, special disassembly tools are generally required when removing the coupling.
[0003] For smaller couplings, they need to be pulled out with the help of a three-claw or four-claw hydraulic puller when they are dismantled. In the process of fixing the hydraulic puller hook, multiple people are needed to fix the hook. After the hydraulic cylinder is subjected to force, the hook is fixed with wire to prevent it from falling off. At the same time, since the height and position of the hydraulic puller are adjusted only by manpower, the hook often deviates from the center of the coupling, seriously affecting the progress of daily work. For larger couplings, since the sizes are basically different and cannot be made in advance, they are often measured on site and a simple puller is made using a jack. The production process consumes maintenance time and cannot be reused, which prolongs the maintenance period and increases the maintenance intensity. Utility Model Content
[0004] The purpose of the utility model is to solve the above problems and provide a special device for pulling a coupling.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A special device for pulling a coupling, comprising a base, a roller support, a vertical moving device, and a grab hook device;
[0007] The roller support is arranged in the middle of the top surface of the base; a fixed wheel is arranged on the front side of the bottom of the base, and a redirecting wheel is arranged on the rear side;
[0008] The vertical moving device includes a screw rod, a hand wheel, a movable support, two clamping blocks, and two rollers. The two clamping blocks are fixed at both ends of the movable support. The two rollers are arranged on the outer side walls of the two clamping blocks and the two rollers are respectively located in the rolling grooves of the roller support vertical rods. The screw rod passes through the top plate of the roller support and the movable support, and the lower end is connected to the base through a bearing, and the screw rod is connected to the movable support through a threaded connection. The hand wheel is arranged at the upper end of the screw rod;
[0009] The grab hook device includes a lifting rod, a door-type bracket, a claw bracket, a hydraulic cylinder, a push rod, a rotating shaft, and two grab hooks. The lifting rod is a "Z"-shaped structure, one end of which is fixedly arranged in the middle of the side wall of the movable support, and the other end is connected to the middle of the top plate of the door-type bracket. The rotating shaft is arranged at the lower end of the vertical rod of the door-type bracket, and a cross bar support is arranged in the middle of the rotating shaft. The claw bracket is arranged in the middle of the cross bar support. The hydraulic cylinder is fixed in the middle of the front end of the claw bracket, and the push rod is arranged at the front end of the hydraulic cylinder. The two grab hooks are symmetrically arranged on both sides of the cross bar support by bolts, and the front end of the grab hook is in a curved hook shape.
[0010] A hydraulic oil pump is arranged on the base, the hydraulic cylinder is connected to the hydraulic oil pump through an oil pipe, and the hydraulic oil pump is externally connected to a power source.
[0011] Furthermore, a handle is provided on the side wall of the roller support.
[0012] Furthermore, a plurality of adjustment holes are evenly arranged on the top surfaces of the crossbar supports on both sides of the hook bracket.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The hook bracket of the utility model can realize multi-dimensional adjustment to realize the vertical and horizontal pulling of the coupling;
[0015] 2. The utility model can realize the disassembly of couplings of different sizes by adjusting the distance between the hook claws;
[0016] 3. The bottom surface of the base of the utility model is equipped with a redirecting wheel, which is easy to move and reduces the labor intensity of the operators;
[0017] 4. The utility model has high stability and simple operation, which saves labor costs and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] In the figure: 1. base; 2. roller support; 3. screw; 4. handwheel; 5. movable support; 6. block; 7. roller; 8. handle; 9. lifting rod; 10. door-type bracket; 11. claw bracket; 12. hydraulic cylinder; 13. push rod; 14. rotating shaft; 15. grab hook; 16. adjustment hole; 17. steering wheel; 18. fixed wheel; 19. hydraulic oil pump. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] like Figure 1As shown, a special device for pulling a coupling includes a base 1, a roller support 2, a vertical moving device, and a grab hook device;
[0022] The roller support 2 is arranged in the middle of the top surface of the base 1; a fixed wheel 18 is arranged on the front side of the bottom of the base 1, and a redirecting wheel 17 is arranged on the rear side; a handle 8 is arranged on the side wall of the roller support 2;
[0023] The vertical moving device includes a screw rod 3, a hand wheel 4, a movable support 5, two blocks 6, and two rollers 7. The two blocks 6 are fixed at both ends of the movable support 5. The two rollers 7 are arranged on the outer side walls of the two blocks 6 and the two rollers 7 are respectively located in the rolling grooves of the vertical rods of the roller support 2. The screw rod 3 passes through the top plate of the roller support 2 and the movable support 5, and the lower end is connected to the base 1 through a bearing, and the screw rod 3 is connected to the movable support 5 through a thread, and the hand wheel 4 is arranged at the upper end of the screw rod 3;
[0024] The grab hook device includes a lifting rod 9, a door-type bracket 10, a claw bracket 11, a hydraulic cylinder 12, a push rod 13, a rotating shaft 14, and two grab hooks 15. The lifting rod 9 is a "Z"-shaped structure, one end of which is fixedly arranged in the middle of the side wall of the movable support 5, and the other end is connected to the middle of the top plate of the door-type bracket 10. The rotating shaft 14 is arranged at the lower end of the vertical rod of the door-type bracket 10, and a cross bar support is arranged in the middle of the rotating shaft 14. The claw bracket 11 is arranged in the middle of the cross bar support. The hydraulic cylinder 12 is fixed in the middle of the front end of the claw bracket 11. The push rod 13 is arranged at the front end of the hydraulic cylinder 12. The top surfaces of the cross bar supports on both sides of the claw bracket 11 are evenly provided with a plurality of adjustment holes 16. The two grab hooks 15 are symmetrically arranged on both sides of the cross bar support by bolts, and the front ends of the grab hooks 15 are in the shape of curved hooks.
[0025] A hydraulic oil pump 19 is disposed on the base 1 , and the hydraulic cylinder 12 is connected to the hydraulic oil pump 19 via an oil pipe, and the hydraulic oil pump 19 is externally connected to a power source.
[0026] The working process of this utility model:
[0027] When in use, the operator first pushes the utility model to move it to the vicinity of the coupling to be disassembled, and adjusts the direction by the redirecting wheel 17 so that the push rod 13 and the grab hook 15 face the coupling to be disassembled;
[0028] Then, by turning the hand wheel 4, the movable support 5 is driven to move up and down, and the roller 7 rolls in the rolling groove, so that the top rod 13 and the grab hook 15 are at the same level as the coupling;
[0029] Manually rotate the rotating shaft 14 so that the push rod 13 is parallel to the central axis of the coupling;
[0030] Move the device by means of the redirecting wheel 17 and the fixing wheel 18, so that the push rod 13 is inserted into the middle of the coupling, and then remove the grab hook 15, and adjust the installation position of the grab hook 15 in the adjustment hole 16 according to the diameter of the coupling, so that after the grab hook 15 is installed, its head hook is stuck on both sides of the coupling end;
[0031] Finally, the hydraulic cylinder 12 is started to extend, and the push rod 13 pushes forward against the equipment opposite to the coupling and continues to exert force forward to move the device backward. At the same time, the coupling is separated from the original equipment under the action of the grab hook 15, and the pulling and disassembly of the coupling can be completed at this time.
Claims
1. A special device for pulling a coupling, characterized in that: It comprises a base (1), a roller support (2), a vertical moving device, and a grab hook device; The roller support (2) is arranged in the middle of the top surface of the base (1); a fixing wheel (18) is arranged on the front side of the bottom of the base (1), and a redirecting wheel (17) is arranged on the rear side; The vertical moving device comprises a screw rod (3), a hand wheel (4), a movable support (5), two clamping blocks (6), and two rollers (7); the two clamping blocks (6) are fixedly arranged at two ends of the movable support (5); the two rollers (7) are arranged on the outer side walls of the two clamping blocks (6) and the two rollers (7) are respectively located in the rolling grooves of the vertical rods of the roller support (2); the screw rod (3) passes through the top plate of the roller support (2) and the movable support (5); the lower end is connected to the base (1) through a bearing, and the screw rod (3) and the movable support (5) are connected through threads; the hand wheel (4) is arranged at the upper end of the screw rod (3); The grab hook device comprises a lifting rod (9), a door-shaped bracket (10), a hook bracket (11), a hydraulic cylinder (12), a push rod (13), a rotating shaft (14), and two grab hooks (15). The lifting rod (9) is a "Z"-shaped structure, one end of which is fixedly arranged in the middle of the side wall of the movable support (5), and the other end is connected to the middle of the top plate of the door-shaped bracket (10). The rotating shaft (14) is arranged at the lower end of the vertical rod of the door-shaped bracket (10). A cross bar support is arranged in the middle of the rotating shaft (14). The hook bracket (11) is arranged in the middle of the cross bar support. The hydraulic cylinder (12) is fixedly arranged in the middle of the front end of the hook bracket (11). The push rod (13) is arranged at the front end of the hydraulic cylinder (12). The two grab hooks (15) are symmetrically arranged on both sides of the cross bar support by bolts, and the front ends of the grab hooks (15) are in the shape of curved hooks. A hydraulic oil pump (19) is provided on the base (1), the hydraulic cylinder (12) is connected to the hydraulic oil pump (19) via an oil pipe, and the hydraulic oil pump (19) is externally connected to a power source.
2. A special device for pulling a coupling according to claim 1, characterized in that: A handle (8) is provided on the side wall of the roller support (2).
3. A special device for pulling a coupling according to claim 1, characterized in that: A plurality of adjustment holes (16) are evenly arranged on the top surfaces of the crossbar supports on both sides of the hook bracket (11).