Dismounting device for motor coupling of nuclear power plant

Abstract

The utility model belongs to the technical field of motor coupler dismounting, and particularly relates to a dismounting device of a nuclear power plant motor coupler, which comprises a split disc, a flexible cable, an oil cylinder, an oil cylinder seat, a pull claw and a pull disc, the split disc is fixed on the outer side of the coupler, the pull claw is arranged on the surface of the split disc, and one end of the pull claw hooks the surface of the split disc. An oil cylinder base is arranged in the middle of the pull disc, an oil cylinder is arranged on the oil cylinder base and abuts against the end of the motor shaft, and a flexible cable is wound around the surface of the coupler. The flexible cable is arranged to heat the coupler, it is guaranteed that the surface of the coupler is heated evenly, and the heating efficiency is high. The position of the pull claw is adjusted through the positioning adjusting screw rod, reliable positioning of the pull claw is achieved, and the anti-slipping function is achieved. And through the design of the split discs, the situation that the middle disc of the coupler is directly deformed by the pulling claws is avoided, and enough space is reserved for heating the surface of the coupler.

Description

Technical Field

[0001] This utility model belongs to the field of motor coupling disassembly technology, specifically relating to a disassembly device for a nuclear power plant motor coupling. Background Technology

[0002] With the rapid development of industrial technology, the requirements for the efficiency and quality of various mechanical maintenance are getting higher and higher. The motor coupling is the core component of the motor transmission system. As a mechanical link between the motor and the load, the coupling converts the rotational or linear motion of the motor into the power output required by the load through rigid or elastic connection, ensuring efficient energy transmission.

[0003] In current technology, the method for disassembling motor couplings in the nuclear power field involves heating the coupling surface with oxy-acetylene. The heated coupling expands, increasing the clearance between the motor shaft and the coupling, which is then removed using a puller. However, this method suffers from several drawbacks. The oxy-acetylene heating of the coupling has a small heating area, uneven heating, and difficulty in temperature control. This method can easily alter the properties of the coupling material and makes disassembly difficult, potentially causing damage to the shaft and coupling. Utility Model Content

[0004] This invention proposes a disassembly device for nuclear power plant motor couplings, which solves the problems of low efficiency and easy damage to couplings in existing disassembly methods.

[0005] The technical solution of this utility model:

[0006] This utility model proposes a disassembly device for a nuclear power plant motor coupling. The device includes a split disc, a flexible cable, a hydraulic cylinder, a hydraulic cylinder seat, pull claws, and a pull plate. The split disc is fixed to the outside of the coupling. Pull claws are provided on the surface of the split disc. One end of the pull claw hooks onto the surface of the split disc, and the other end of the pull claw is connected to the pull plate. A hydraulic cylinder seat is provided in the middle of the pull plate. The hydraulic cylinder is set on the hydraulic cylinder seat and presses against the end of the motor shaft. A flexible cable is wound around the surface of the coupling.

[0007] In some embodiments, the split discs are fixed to the coupling surface by nuts A and bolts.

[0008] In some embodiments, the pull claw is secured to the pull plate by a washer and nut B.

[0009] In some embodiments, the number of pull claws is three, and the pull claws are evenly distributed on the surface of the open disc.

[0010] In some embodiments, the flexible cable has a cable sheath on the surface of the end that does not contact the coupling surface, and the flexible cable is connected to a medium-frequency heating device, which is used to heat the flexible cable.

[0011] In some embodiments, the middle section of the pull claw is connected to a positioning adjustment screw via a fixed seat. The positioning adjustment screw is threaded to one end of a support rod, and the other end of the support rod is connected to the pull plate via an internal hex screw.

[0012] In some embodiments, a lifting eye screw is connected at the middle section of the support rod.

[0013] In some embodiments, the middle section of the pull claw is connected to one end of the positioning adjustment screw via a fixed seat, and the other end of the positioning adjustment screw is provided with a rotating rod.

[0014] The beneficial effects of this utility model are:

[0015] This invention proposes a disassembly device for nuclear power plant motor couplings. The device uses a flexible cable to heat the coupling, ensuring uniform heating and high heating efficiency. The position of the pull claws is adjusted by a positioning screw, achieving reliable positioning and preventing slippage. The split disc design prevents the pull claws from directly deforming the central disc of the coupling, provides sufficient space for heating the coupling surface, and easily ensures that the puller center is concentric with the coupling mounting shaft. It also eliminates the need for manual handling and is suitable for disassembly and maintenance of couplings of various diameters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a disassembly device for a nuclear power plant motor coupling proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of a medium-frequency heating device for disassembling a nuclear power plant motor coupling according to the present invention;

[0018] Attached Figure Descriptions: 1. Motor shaft; 2. Coupling; 3. Nut A; 4. Bolt; 5. Split disc; 6. Flexible cable; 7. Cable sheath; 8. Fixing base; 9. Positioning and adjusting screw; 10. Rotating rod; 11. Hydraulic cylinder; 12. Support rod; 13. Pull claw; 14. Hydraulic cylinder seat; 15. Eye bolt; 16. Pull plate; 17. Socket head cap screw; 18. Washer; 19. Nut B; 20. Medium frequency heating equipment. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 2As shown, this utility model proposes a disassembly device for a nuclear power plant motor coupling. The device includes a nut 3, a bolt 4, a split disc 5, a flexible cable 6, a cable sheath 7, a fixing seat 8, a positioning and adjusting screw 9, a rotating rod 10, a hydraulic cylinder 11, a support rod 12, a pull claw 13, a hydraulic cylinder seat 14, a lifting eye screw 15, a pull plate 16, an internal hex screw 17, a washer 18, a nut 319, and a medium-frequency induction heating device 20. For the structure connecting the coupling 2 and the motor shaft 1, the coupling 2 is located outside the motor shaft 1, the motor is located on the left side of the coupling 2, and the disassembly device for the nuclear power plant motor coupling 2 is located on the right side of the coupling 2.

[0021] The split disc 5 is fixed to the outside of the coupling 2 by bolts 4 and nuts A3. Three pull claws 13 are evenly arranged on the left side surface of the split disc 5. One end of the three pull claws 13 hooks onto the split disc 5, and the other end of the three pull claws 13 is fixed to the pull plate 16 by washers 18 and nuts B19. A cylinder seat 14 is provided on the left side of the middle of the pull plate 16. A cylinder 11 is provided on the left end of the cylinder seat 14. The left side of the cylinder 11 presses against the end of the motor shaft 1. By applying oil pressure to the cylinder 11, the coupling 2 is disengaged from the motor shaft 1.

[0022] The middle section of the pull claw 13 is connected to one end of the positioning adjustment screw 9 via a fixed base 8. A rotating rod 10 is mounted on the other end of the positioning adjustment screw 9. The positioning adjustment screw 9 is threaded to one end of a support rod 12, and the other end of the support rod 12 is mounted on the pull plate 16 via an internal hex screw 17. An eye bolt 15 is connected to the middle section of the support rod 12. Rotating the rotating rod 10 adjusts the position of the positioning adjustment screw 9 on the support rod 12, thereby changing the radial position of the pull claw 13. Simultaneously, the positioning adjustment screw 9 also prevents the pull claw 13 from disengaging.

[0023] A flexible cable 6 is wound around the surface of the coupling 2 on the right side of the split disc 5. The end of the flexible cable 6 that does not contact the surface of the coupling 2 is provided with a cable sheath 7. The flexible cable 6 is connected to the medium frequency heating device 20. The flexible cable 6 heats the surface of the coupling 2 evenly through the medium frequency heating device 20. The clearance between the inner hole of the coupling 2 and the motor shaft 1 gradually increases as the temperature rises. Under the action of the oil cylinder 11, the coupling 2 is disassembled from the motor shaft 1.

[0024] This utility model proposes a disassembly device for a nuclear power plant motor coupling 2. The specific implementation of this device is as follows: A split disc 5 is fixed to the coupling 2 using bolts 4 and nuts A3. The split disc 5 serves as a disassembly tool, preventing the pull claws 13 from directly applying tension to the middle disc of the coupling 2, thus avoiding deformation of the coupling 2; it also provides sufficient space for heating the surface of the coupling 2. Three pull claws 13, evenly distributed around the circumference of the split disc 5, hold the split disc 5 in place. The other end of the pull claws 13 is fixed to the pull plate 16 using washers 18 and nuts B19. Loosening the hex socket screws 17 and rotating the rotating rod 10 adjusts the position of the positioning adjusting screw 9 on the support rod 12, thereby changing the radial position of the pull claws 13. Simultaneously, the positioning adjusting screw 9 also prevents the pull claws 13 from disengaging.

[0025] A flexible cable 6 is wound around the surface of the coupling 2 on the right side of the split disc 5. The flexible cable 6 is uniformly heated by the medium frequency heating device 20. The clearance between the inner hole of the coupling 2 and the motor shaft 1 gradually increases as the temperature rises. The oil cylinder 11 is pressed against the end of the motor shaft 1. By applying oil pressure to the oil cylinder 11, the coupling 2 is disengaged from the motor shaft 1.

[0026] The embodiments of this utility model have been described in detail above. This utility model is not limited to the above examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model.

Claims

1. A disassembly device for a nuclear power plant motor coupling, characterized in that, The device includes a split disc (5), a flexible cable (6), a hydraulic cylinder (11), a hydraulic cylinder seat (14), a pull claw (13), and a pull plate (16). The split disc (5) is fixed on the outside of the coupling (2). The pull claw (13) is provided on the surface of the split disc (5). One end of the pull claw (13) hooks onto the surface of the split disc, and the other end of the pull claw (13) is connected to the pull plate (16). The hydraulic cylinder seat (14) is provided in the middle of the pull plate (16). The hydraulic cylinder (11) is provided on the hydraulic cylinder seat (14). The hydraulic cylinder (11) presses against the end of the motor shaft (1). The flexible cable (6) is wound around the surface of the coupling (2).

2. The disassembly device for a nuclear power plant motor coupling according to claim 1, characterized in that, The split disc (5) is fixed to the surface of the coupling (2) by nuts A (3) and bolts (4).

3. The disassembly device for a nuclear power plant motor coupling according to claim 2, characterized in that, The pull claw (13) is fixed to the pull plate (16) by a washer (18) and a nut B (19).

4. The disassembly device for a nuclear power plant motor coupling according to claim 3, characterized in that, The number of pull claws (13) is 3, and the pull claws (13) are evenly arranged on the surface of the open disc.

5. The disassembly device for a nuclear power plant motor coupling according to claim 1, characterized in that, The flexible cable (6) has a cable sheath (7) on one end that does not contact the surface of the coupling (2). The flexible cable (6) is connected to a medium-frequency heating device, which is used to heat the flexible cable (6).

6. The disassembly device for a nuclear power plant motor coupling according to claim 5, characterized in that, The middle section of the pull claw (13) is connected to the positioning adjustment screw (9) via the fixed seat (8). The positioning adjustment screw (9) is connected to one end of the support rod (12) via a thread, and the other end of the support rod (12) is connected to the pull plate (16) via an internal hex screw (17).

7. A disassembly device for a nuclear power plant motor coupling according to claim 6, characterized in that, The support rod (12) is connected to the eye bolt (15) at the middle section.

8. A disassembly device for a nuclear power plant motor coupling according to claim 7, characterized in that, The middle section of the pull claw (13) is connected to one end of the positioning adjustment screw (9) via a fixed base (8), and the other end of the positioning adjustment screw (9) is provided with a rotating rod (10).

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