Dismounting tool for coupling of high-voltage motor of thermal power plant

Abstract

The invention relates to the technical field of coupler disassembly, in particular to a thermal power plant high-voltage motor coupler disassembly tool which comprises a transverse plate, vertical plates are symmetrically welded to the two sides of the bottom of the transverse plate, two sets of clamping plates are symmetrically arranged between the vertical plates, clamping blocks are installed at the bottoms of one sides of the clamping plates, and an expansion assembly is arranged on the transverse plate. The expansion assembly comprises a fixing base installed at the bottom of the transverse plate, and a self-locking assembly is arranged in the fixing base. According to the invention, the two groups of clamping plates can be pushed to expand only by rotating a rotating rod in the expansion assembly, and in the process, the self-locking assembly is utilized to synchronously limit the reset movement of the clamping plates, so that the problem of continuously and manually limiting the reset of the clamping plates before the clamping plates clamp the output of the high-voltage motor can be effectively avoided; and after the fixed seat is in contact with the output shaft, release of limitation of the clamping plate is automatically triggered, then clamping of the output shaft by the clamping plate is rapidly completed, the convenience of connection between the tool and the output shaft is further improved, and the coupler is rapidly disassembled in cooperation with a jack.

Description

Technical Field

[0001] The invention relates to the technical field of coupling disassembly, in particular to a coupling disassembly tool for a high-voltage motor in a thermal power plant. Background Art

[0002] As the driving core, the importance of high-voltage motors in thermal power plants is self-evident. Compared with low-voltage motors, high-voltage motors reduce the burden on power distribution facilities with their smaller current requirements, while significantly improving the operating efficiency of mechanical equipment. However, with the long-term operation of high-voltage motors, the bearing grease gradually ages, and abnormal noises frequently occur inside the motor. In extreme cases, it may even cause the bearings to get stuck, leading to serious accidents of motor damage. Therefore, it is particularly important to disassemble and maintain the motor regularly. Before disassembling the motor, the coupling on the output shaft must be removed first.

[0003] Traditional coupling disassembly tools generally use two sets of screws to pass through the preset symmetrical holes of the coupling, then tighten the nuts on the screws, and then cooperate with the jack to complete the disassembly of the coupling. After disassembly, the nuts and screws need to be separated before the coupling can be removed from the tool. The disassembly process is relatively cumbersome and it is difficult to achieve quick disassembly of the coupling. In view of the above technical defects, a solution is now proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a high-voltage motor coupling disassembly tool for a thermal power plant, which can push two groups of clamping plates to expand only by rotating the rotating rod in the expansion component, and in this process, the self-locking component is used to synchronously limit the resetting movement of the clamping plate, which can effectively avoid the problem of continuous manual restriction on the resetting of the clamping plate before the clamping plate clamps the high-voltage motor output; and when the fixed seat contacts the output shaft, it automatically triggers the release of the clamping plate restriction, and then quickly completes the clamping of the output shaft by the clamping plate, further improving the convenience of connecting the tool with the output shaft, and cooperating with the jack to complete the rapid disassembly of the coupling; and by adjusting the sleeve and the external threaded tube, the distance between the fixed seat and the clamping block can be adjusted, and combined with the expansion of the clamping plate, the coupling on the output shaft of different shaft diameters can be disassembled, further improving the scope of application of the tool to solve the above-mentioned technical defects.

[0005] The purpose of the present invention can be achieved by the following technical solutions: a thermal power plant high-voltage motor coupling disassembly tool, comprising a horizontal plate, vertical plates are symmetrically welded on both sides of the bottom of the horizontal plate, two groups of clamping plates are symmetrically arranged between the vertical plates, a clamping block is installed at the bottom of one side of the clamping plate, an expansion component is arranged on the horizontal plate, and the expansion component includes a fixed seat installed at the bottom of the horizontal plate, a rotating rod is rotatably connected inside the fixed seat, and a gear is fixedly connected to the rotating rod, a toothed plate meshing with the gear is installed on the clamping plate, and the toothed plate is slidably connected to the fixed seat, and the top end of the rotating rod passes through the outer side of the fixed seat and is fixedly connected to a turning handle; A self-locking assembly is arranged in the fixing seat, and the self-locking assembly comprises a ratchet wheel fixedly connected to the top of the gear, and a ratchet plate arranged on one side of the ratchet wheel; A connecting plate is welded on the vertical plate, a mounting plate is welded between the ends of the connecting plate, and a jack is fixedly connected to one side of the mounting plate.

[0006] Preferably, the end of the piston rod of the jack is fixedly connected to a movable plate, a push column is fixedly connected to the middle of one side of the movable plate close to the horizontal plate, and both sides of the movable plate are fixedly connected to sockets that are slidably connected to corresponding connecting plates.

[0007] Preferably, two groups of limit plates slidably connected to the fixed seat are welded to the bottom of the horizontal plate, an upper cross bar slidably connected to the corresponding clamping plate is fixedly connected between the limit plate and the vertical plate, a spring 1 is fixedly connected between the vertical plate and the clamping plate and located on the outside of the upper cross bar, and a lower cross bar slidably connected to the corresponding vertical plate is fixedly connected to the bottom of one side of the clamping plate.

[0008] Preferably, a sliding rod is symmetrically fixedly connected to one side of the pawl plate, and a movable plate is slidably connected between the sliding rods, a spring 2 is fixedly connected between the pawl plate and the movable plate and located on the outside of the corresponding sliding rod, the end of the sliding rod is fixedly connected to a limiting block, and the bottom of the movable plate is fixedly connected to a U-shaped abutment rod slidably connected to a fixed seat.

[0009] Preferably, the top of the fixing seat is fixedly connected to an external threaded pipe located on the outside of the rotating rod, and the top of the horizontal plate is rotatably connected to an adjusting sleeve threadedly connected to the external threaded pipe.

[0010] Preferably, one end of the tooth plate is fixedly connected to an I-shaped block, the clamping plate is provided with an I-shaped groove slidably connected to the corresponding I-shaped block, and the clamping plate is provided with a clearance groove for the corresponding tooth plate to pass through.

[0011] Preferably, one side of the clamping block is symmetrically fixedly connected with an I-shaped block 2, the clamping plate is provided with an I-shaped groove 2 which is slidably connected to the corresponding I-shaped block 2, a fixed shaft is welded on the clamping plate, and a support rod is rotatably connected to the fixed shaft, a pushing rod 1 is hingedly connected between the I-shaped block 1 and one end of the support rod, and a pushing rod 2 is hingedly connected between the free end of the support rod and the I-shaped block 2 on one side.

[0012] The present invention also provides a method for using a high-voltage motor coupling disassembly tool in a thermal power plant, comprising the following steps: S1: The rotating adjustment sleeve cooperates with the external threaded tube to drive the fixed seat to rise or fall, and the fixed seat drives the tooth plates on both sides to rise and fall synchronously, and pulls the support rod to rotate through the hinged push rod 1. The rotating support rod cooperates with the push rod 2 to push the block and the fixed seat to move in the opposite direction, and the distance between the block and the fixed seat is adjusted to cope with the output shafts of different shaft diameters of high-voltage motors in thermal power plants; S2: The turning handle drives the rotating rod to rotate, and the rotating rod drives the gear to rotate. The gear cooperates with the toothed plates on both sides to push the two sets of card plates to move apart, and at the same time compresses the corresponding spring 1. In this process, the pawl plate is continuously engaged and separated with the ratchet wheel under the compression of spring 2, and the reverse rotation of the gear is limited and self-locked, completing the expansion of the two sets of card plates; S3: Place two sets of clamping plates on both sides of the output shaft of the high-voltage motor, and fit the bottom of the fixing seat with the output shaft of the high-voltage motor. During this process, the output shaft of the high-voltage motor contacts the U-shaped abutment rod and pushes it to drive the movable plate to move upward, forcing the pawl plate to rise and separate from the ratchet wheel, automatically releasing the restriction on the reverse rotation of the gear, and the two sets of clamping plates move relative to each other under the compression elastic force of the spring 1 to clamp the output shaft of the high-voltage motor, while driving the two sets of clamping blocks to be placed at the bottom of the output shaft of the high-voltage motor, completing the clamping connection between the tool and the output shaft of the high-voltage motor; S4: The piston rod of the jack extends to drive the moving plate to move, so that the push column on the moving plate extends into the coupling and abuts against the end of the high-voltage motor output shaft. As the piston rod of the jack continues to extend, the upper cross bar and the lower cross bar drive the clamping plate, the clamping block, the fixed seat and one side of the coupling to abut, thereby driving the coupling to move on the high-voltage motor output shaft to complete the disassembly of the coupling.

[0013] The beneficial effects of the present invention are as follows: (1) When the present invention is in use, the rotating rod rotates the matching gear to push the two sets of clamping plates to move apart, and compresses spring 1 to clamp the clamping plates on both sides of the output shaft of the high-voltage motor of the thermal power plant, and simultaneously drives the corresponding clamping block to be placed at the bottom of the output shaft, so as to quickly complete the clamping connection between the tool and the output shaft, and then the jack piston rod drives the pushing column to abut against the end of the output shaft, and pushes the clamping plate and the clamping block to abut against the fixed seat and one side of the coupling, so as to disassemble the coupling. Compared with the prior art, the coupling can be disassembled quickly; and in the process of expanding the two sets of clamping plates, the reverse rotation of the gears can be synchronously limited by means of the cooperation between the pawl plate and the ratchet wheel, so as to avoid the problem of continuous manual restriction on the reset of the clamping plate before clamping, and when the fixed seat contacts the output shaft, the separation of the pawl plate and the ratchet wheel can be automatically triggered, so as to automatically complete the clamping of the output shaft by the clamping plate, and further improve the convenience of connecting the tool with the output shaft; (2) The present invention can adjust the position of the fixed seat by rotating the adjustment sleeve in conjunction with the external threaded tube. While the fixed seat is adjusted, the support rod, the push rod one and the push rod two are combined to synchronously push the clamping block and the fixed seat to move in opposite directions. Therefore, the distance between the clamping block and the fixed seat can be adjusted according to the output shafts of the high-voltage motor of the thermal power plant with different shaft diameters. In combination with the expansion of the two sets of clamping plates, the couplings on the output shafts with different shaft diameters can be disassembled, further improving the scope of application of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings; Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cooperation between the card plate and the expansion assembly of the present invention; Figure 3 It is a schematic diagram of the cooperation between the card plate and the horizontal plate of the present invention; Figure 4 It is a structural schematic diagram of the card board of the present invention; Figure 5 is a schematic diagram of the structure of the expansion assembly of the present invention; Figure 6 It is a structural schematic diagram of the self-locking assembly of the present invention; Figure 7 It is a schematic diagram of the cooperation between the expansion component and the self-locking component of the present invention; Figure 8 It is a schematic diagram of the cooperation between the present invention and a high-voltage motor in a thermal power plant.

[0015] Legend: 1. Horizontal plate; 11. Vertical plate; 12. Connecting plate; 13. Mounting plate; 14. Jack; 15. Moving plate; 16. Push column; 17. Card seat; 18. Limiting plate; 19. Upper crossbar; 110. Adjustment sleeve; 2. Card plate; 21. Card block; 22. Tooth plate; 23. Spring 1; 24. Lower cross bar; 25. I-shaped block 1; 26. I-shaped groove 1; 27. Giving way groove; 28. I-shaped block 2; 29. ​​I-shaped groove 2; 210. Support rod; 211. Push rod 1; 212. Push rod 2; 3. expansion assembly; 31. fixing seat; 32. rotating rod; 33. gear; 34. turning handle; 35. external threaded pipe; 4. Self-locking assembly; 41. Ratchet; 42. Ratchet plate; 43. Sliding rod; 44. Movable plate; 45. Spring 2; 46. Limit block; 47. U-shaped abutment rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1: The problem that the disassembly process is complicated and it is difficult to quickly disassemble the coupling can be solved by the following solution: See also Figure 1-Figure 8 As shown, in this embodiment, a high-voltage motor coupling disassembly tool for a thermal power plant includes a horizontal plate 1, and vertical plates 11 are symmetrically welded on both sides of the bottom of the horizontal plate 1. Two groups of clamping plates 2 are symmetrically arranged between the vertical plates 11. The clamping plates 2 are first clamped on both sides of the output shaft of the high-voltage motor, and then the clamping plates 2 are contacted with one side of the coupling on the output shaft, and the clamping plates 2 are pulled to drive the coupling to separate from the output shaft. A clamping block 21 is installed at the bottom of one side of the clamping plate 2. The clamping block 21 is arranged at the bottom of the opposite side of the two groups of clamping plates 2. The clamping plate 2 is clamped on the output shaft of the high-voltage motor. After that, the corresponding clamping block 21 is driven to be placed at the bottom of the output shaft, so as to achieve the clamping and fixing effect of the cross plate 1 on the output shaft, avoiding the problem of continuous manual support on the jack 14 side of the tool, and thus inconvenient to operate the jack 14 piston rod extension. It is only necessary to control the cross plate 1 to be located above the output shaft to avoid the separation of the clamping plate 2 from the output shaft, thereby improving the labor-saving effect during the disassembly of the coupling, and an arc surface is provided on one side of the top of the clamping block 21 to increase the contact surface between the clamping block 21 and the output shaft, thereby improving the clamping stability of the output shaft; The expansion assembly 3 is provided on the cross plate 1, and the expansion assembly 3 includes a fixed seat 31 installed at the bottom of the cross plate 1. The fixed seat 31 is used for the installation of the gear 33 and the toothed plate 22 on the one hand, and on the other hand, it replaces the cross plate 1 and contacts the output shaft, and cooperates with the clamping plate 2 and the clamping block 21 to jointly contact with one side of the coupling, thereby making multi-point contact with the coupling, increasing the overall force balance during the movement of the coupling. The internal rotation of the fixed seat 31 is connected with a rotating rod 32, and the rotating rod 32 is fixedly connected with a gear 33. The clamping plate 2 is installed with a toothed plate 22 meshing with the gear 33, and the toothed plate 22 is slidably connected with the fixed seat 31. The top end of the rotating rod 32 passes through the outer side of the fixed seat 31 and is fixedly connected with a turning handle 34. The turning handle 34 drives the rotating rod 32 to rotate, and the rotating rod 32 drives the gear 33 to rotate. The gear 33 cooperates with the toothed plates 22 on both sides to push the two groups of clamping plates 2 to move apart, so as to facilitate the two groups of clamping plates 2 to be placed on both sides of the output shaft for clamping.

[0018] A self-locking assembly 4 is provided in the fixing seat 31, and the self-locking assembly 4 includes a ratchet 41 fixedly connected to the top of the gear 33, and a pawl plate 42 provided on one side of the ratchet 41. The gear 33 rotates to drive the two groups of card plates 2 to move apart and expand, and drives the ratchet 41 to rotate synchronously. By means of the one-way rotation restriction after the ratchet 41 and the pawl plate 42 are engaged, the reverse rotation of the gear 33 is restricted and self-locked, and then the position locking of the two groups of card plates 2 after the expansion is completed, avoiding the problem of continuous manual restriction on the reset of the card plates 2 before clamping; A connecting plate 12 is welded on the vertical plate 11, and a mounting plate 13 is welded between the ends of the connecting plate 12. A jack 14 is fixedly connected to one side of the mounting plate 13. After the clamping plate 2 clamps the output shaft of the high-voltage motor, the piston rod of the jack 14 extends out and abuts against the end of the output shaft. As the piston rod of the jack 14 continues to extend, the clamping plate 2 and the clamping block 21 are driven to abut against the fixed seat 31 and one side of the coupling, thereby driving the coupling to move on the output shaft of the high-voltage motor to complete the disassembly of the coupling.

[0019] The piston rod end of the jack 14 is fixedly connected to a movable plate 15, and a pushing column 16 is fixedly connected to the middle of one side of the movable plate 15 close to the cross plate 1. The two sides of the movable plate 15 are fixedly connected to a holder 17 that is slidably connected to the corresponding connecting plate 12. The movable plate 15 cooperates with the holder 17 to achieve stable movement of the pushing column 16, and the pushing column 16 with a smaller diameter can effectively extend into the interior of the coupling and effectively abut against the output shaft of the high-voltage motor to avoid extrusion damage to the coupling and effectively disassemble the coupling. After the two sets of clamping plates 2 clamp the output shaft, the cross plate 1 is pulled to move on the output shaft, so that the pushing column 16 first extends into the coupling and abuts against the end of the output shaft. Combined with the contact between the two sets of clamping blocks 21 and the bottom of the output shaft, the support effect on the jack 14 side of the tool can be further improved.

[0020] Two groups of limit plates 18 slidably connected to the fixed seat 31 are welded at the bottom of the horizontal plate 1. On the one hand, the limit plates 18 slide and cooperate with the limit grooves on both sides of the fixed seat 31 to realize the sliding anti-rotation installation of the fixed seat 31, and on the other hand, increase the connection stability of the upper cross bar 19. The upper cross bar 19 slidably connected to the corresponding card plate 2 is fixedly connected between the limit plates 18 and the vertical plate 11, and a spring 23 is fixedly connected between the vertical plate 11 and the card plate 2 and located on the outside of the upper cross bar 19; Two groups of card plates 2 are placed on both sides of the output shaft of the high-voltage motor. The two groups of card plates 2 move relative to each other under the compression elastic force of the spring 23 to clamp the output shaft of the high-voltage motor. A lower cross bar 24 that is slidably connected to the corresponding vertical plate 11 is fixedly connected to the bottom of one side of the card plate 2. The upper cross bar 19 cooperates with the lower cross bar 24 to not only achieve stable relative or separate movement of the card plates 2, but also can cooperate with the jack 14 to drive the vertical plate 11 to move, and synchronously drive the corresponding card plate 2 to move, thereby effectively promoting the movement of the coupling on the output shaft.

[0021] A slide bar 43 is symmetrically fixedly connected to one side of the ratchet plate 42, and a movable plate 44 is slidably connected between the slide bars 43. A second spring 45 is fixedly connected between the ratchet plate 42 and the movable plate 44 and located on the outer side of the corresponding slide bar 43. The slide bar 43 on the ratchet plate 42 is slidably connected to the movable plate 44, and combined with the compression elastic force of the second spring 45, the rotating rod 32 drives the ratchet wheel 41 to rotate, and the ratchet plate 42 is continuously engaged and separated, and the reverse rotation of the gear 33 is limited and self-locked in real time, so as to lock the position of the two groups of card plates 2 after expansion. The end of the slide bar 43 is fixedly connected to the limiting block 46, and the bottom of the movable plate 44 is fixedly connected to a U-shaped abutting rod 47 slidably connected to the fixed seat 31; The transverse section of the U-shaped abutment rod 47 is located on the outer side of the bottom of the fixed seat 31, and the bottom of the fixed seat 31 is provided with a notch for accommodating the transverse section of the U-shaped abutment rod 47. When the bottom of the fixed seat 31 contacts the output shaft, the output shaft contacts the U-shaped abutment rod 47 and pushes its transverse section into the notch on the fixed seat 31, and simultaneously pushes the movable plate 44 to move upward, and the sliding rod 43 forces the pawl plate 42 to rise and separate from the ratchet 41. No manual release is required, and the restriction on the reverse rotation of the gear 33 is automatically released. The two sets of clamping plates 2 move relative to each other under the compression elastic force of the spring 23 to clamp the output shaft of the high-voltage motor, thereby improving the convenience of connecting the tool with the output shaft. The end of the sliding rod 43 passes through the movable plate 44 and is fixedly connected to the limiting block 46, thereby limiting the fit between the pawl plate 42 and the ratchet 41. After the fixed seat 31 is separated from the output shaft, the pawl plate 42 and the movable plate 44 descend under the action of gravity, and the meshing of the pawl plate 42 and the ratchet 41 can be naturally completed.

[0022] Embodiment 2: The problem of difficulty in disassembling couplings on output shafts with different shaft diameters can be solved by the following solution: See also Figure 2-Figure 5 As shown, in this embodiment, the top of the fixed seat 31 is fixedly connected to the outside of the rotating rod 32 with an external threaded tube 35, and the top of the cross plate 1 is rotatably connected to an adjustment sleeve 110 threadedly connected to the external threaded tube 35. The rotating adjustment sleeve 110 and the external threaded tube 35, as well as the cooperation with the limiting plate 18 to limit the rotation of the fixed seat 31, drive the fixed seat 31 to rise or fall, thereby completing the adjustment of the distance between the fixed seat 31 and the pushing column 16.

[0023] One end of the tooth plate 22 is fixedly connected to an I-shaped block 25, and the card plate 2 is provided with an I-shaped groove 26 that is slidably connected to the corresponding I-shaped block 25. The card plate 2 is provided with a clearance groove 27 for the corresponding tooth plate 22 to pass through. By cooperating with the I-shaped block 25 and the I-shaped groove 26, it is possible to avoid interference between the tooth plate 22 and the adjustment of the position of the fixed seat 31, and by providing the clearance groove 27 for the corresponding tooth plate 22 end to pass through, it is possible to avoid affecting the relative movement of the two groups of card plates 2.

[0024] One side of the clamping block 21 is symmetrically fixedly connected with an I-shaped block 28, and the clamping plate 2 is provided with an I-shaped groove 29 that is slidably connected to the corresponding I-shaped block 28. By cooperating with the I-shaped block 28 and the I-shaped groove 29, the distance between the clamping block 21 and the push column 16 can be adjusted, so that after clamping and fixing the output shafts of different shaft diameters, the push column 16 can be extended into the coupling and effectively abut against the end of the output shaft; A fixed shaft is welded on the clamping plate 2, and a support rod 210 is rotatably connected to the fixed shaft. A push rod 211 is hinged between the I-shaped block 25 and one end of the support rod 210. A push rod 212 is hinged between the free end of the support rod 210 and the I-shaped block 28 on one side. The position of the fixed seat 31 is adjusted by rotating the adjusting sleeve 110 in cooperation with the external threaded tube 35. At the same time, the support rod 210, the push rod 211 and the push rod 212 are combined to synchronously push the clamping blocks 21 and the fixed seats 31 on the two groups of clamping plates 2 to move in the opposite direction, thereby completing the adjustment of the distance between the clamping blocks 21 and the fixed seats 31, so as to cope with the output shafts of high-voltage motors with different shaft diameters in thermal power plants.

[0025] Example 3: Please refer to Figure 1-Figure 8 As shown, a method for using a high-voltage motor coupling disassembly tool in a thermal power plant comprises the following steps: S1: The rotating adjustment sleeve 110 cooperates with the external threaded tube 35 to drive the fixing seat 31 to rise or fall, and the fixing seat 31 drives the tooth plates 22 on both sides to rise and fall synchronously, and pulls the support rod 210 to rotate through the hinged push rod 1 211, and the rotating support rod 210 cooperates with the push rod 212 to push the block 21 and the fixing seat 31 to move in the opposite direction, so as to complete the adjustment of the distance between the block 21 and the fixing seat 31, and cope with the output shafts of high-voltage motors with different shaft diameters in thermal power plants; S2: The turning handle 34 drives the rotating rod 32 to rotate, and the rotating rod 32 drives the gear 33 to rotate. The gear 33 cooperates with the toothed plates 22 on both sides to push the two groups of card plates 2 to move apart, and compresses the corresponding spring 1 23 at the same time. In this process, the pawl plate 42 is continuously engaged and separated with the ratchet wheel 41 under the compression of the spring 2 45, and the reverse rotation of the gear 33 is limited and self-locked, so that the expansion of the two groups of card plates 2 is completed; S3: Place the two groups of card plates 2 on both sides of the output shaft of the high-voltage motor, and fit the bottom of the fixing seat 31 with the output shaft of the high-voltage motor. During this process, the output shaft of the high-voltage motor contacts the U-shaped abutment rod 47 and pushes it to drive the movable plate 44 to move upward, forcing the pawl plate 42 to rise and separate from the ratchet 41, automatically releasing the restriction on the reverse rotation of the gear 33, and the two groups of card plates 2 move relative to each other under the compression elastic force of the spring 1 23 to clamp the output shaft of the high-voltage motor, and at the same time drive the two groups of card blocks 21 to be placed at the bottom of the output shaft of the high-voltage motor, completing the clamping connection between the tool and the output shaft of the high-voltage motor; S4: The piston rod of the jack 14 extends to drive the movable plate 15 to move, so that the push column 16 on the movable plate 15 extends into the coupling and abuts against the end of the high-voltage motor output shaft. As the piston rod of the jack 14 continues to extend, the upper cross bar 19 and the lower cross bar 24 drive the clamping plate 2 and the clamping block 21 to abut against the fixed seat 31 and one side of the coupling, thereby driving the coupling to move on the high-voltage motor output shaft to complete the disassembly of the coupling.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tool for disassembling a coupling of a high-voltage motor in a thermal power plant, comprising a horizontal plate (1), vertical plates (11) symmetrically welded to the bottom sides of the horizontal plate (1), two groups of clamping plates (2) symmetrically arranged between the vertical plates (11), a clamping block (21) installed at the bottom of one side of the clamping plate (2), characterized in that: The horizontal plate (1) is provided with an expansion assembly (3), the expansion assembly (3) comprising a fixed seat (31) mounted at the bottom of the horizontal plate (1), a rotating rod (32) is rotatably connected inside the fixed seat (31), and a gear (33) is fixedly connected to the rotating rod (32), a toothed plate (22) meshing with the gear (33) is mounted on the clamping plate (2), and the toothed plate (22) is slidably connected to the fixed seat (31), and the top end of the rotating rod (32) passes through the outside of the fixed seat (31) and is fixedly connected to a turning handle (34); A self-locking assembly (4) is arranged in the fixing seat (31), and the self-locking assembly (4) comprises a ratchet wheel (41) fixedly connected to the top of the gear (33), and a ratchet plate (42) arranged on one side of the ratchet wheel (41); A connecting plate (12) is welded to the vertical plate (11), a mounting plate (13) is welded between the ends of the connecting plate (12), and a jack (14) is fixedly connected to one side of the mounting plate (13).

2. A thermal power plant high voltage motor coupling removal tool according to claim 1, characterized in that: The piston rod end of the jack (14) is fixedly connected to a movable plate (15), a push column (16) is fixedly connected to the middle of one side of the movable plate (15) close to the transverse plate (1), and both sides of the movable plate (15) are fixedly connected to a holder (17) slidably connected to the corresponding connecting plate (12).

3. A thermal power plant high voltage motor coupling removal tool according to claim 1, characterized in that: Two groups of limit plates (18) slidably connected to the fixed seat (31) are welded to the bottom of the horizontal plate (1), an upper cross bar (19) slidably connected to the corresponding clamping plate (2) is fixedly connected between the limit plates (18) and the vertical plate (11), a spring 1 (23) is fixedly connected between the vertical plate (11) and the clamping plate (2) and located on the outside of the upper cross bar (19), and a lower cross bar (24) slidably connected to the corresponding vertical plate (11) is fixedly connected to the bottom of one side of the clamping plate (2).

4. A thermal power plant high voltage motor coupling removal tool according to claim 1, characterized in that: A sliding rod (43) is symmetrically fixedly connected to one side of the ratchet plate (42), and a movable plate (44) is slidably connected between the sliding rods (43). A second spring (45) is fixedly connected between the ratchet plate (42) and the movable plate (44) and located on the outside of the corresponding sliding rod (43). The end of the sliding rod (43) is fixedly connected to a limiting block (46), and the bottom of the movable plate (44) is fixedly connected to a U-shaped abutting rod (47) slidably connected to the fixed seat (31).

5. A thermal power plant high voltage motor coupling removal tool according to claim 1, characterized in that: An externally threaded tube (35) is fixedly connected to the top of the fixed seat (31) and located outside the rotating rod (32), and an adjusting sleeve (110) threadably connected to the externally threaded tube (35) is rotatably connected to the top of the horizontal plate (1).

6. A thermal power plant high voltage motor coupling removal tool according to claim 5, characterized in that: One end of the tooth plate (22) is fixedly connected to an I-shaped block (25); the clamping plate (2) is provided with an I-shaped groove (26) slidably connected to the corresponding I-shaped block (25); and the clamping plate (2) is provided with a clearance groove (27) for the corresponding tooth plate (22) to pass through.

7. A thermal power plant high voltage motor coupling removal tool according to claim 6, characterized in that: One side of the clamping block (21) is symmetrically fixedly connected to an I-shaped block (28); the clamping plate (2) is provided with an I-shaped groove (29) slidably connected to the corresponding I-shaped block (28); a fixed shaft is welded to the clamping plate (2), and a support rod (210) is rotatably connected to the fixed shaft; a push rod (211) is hingedly connected between the I-shaped block (25) and one end of the support rod (210); and a push rod (212) is hingedly connected between the free end of the support rod (210) and the I-shaped block (28) on one side.

8. A method for using a high-voltage motor coupling removal tool for a thermal power plant, used for a high-voltage motor coupling removal tool for a thermal power plant as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: The adjusting sleeve (110) is rotated to cooperate with the external threaded tube (35) to drive the fixing seat (31) to move upward or downward, and the fixing seat (31) drives the toothed plates (22) on both sides to move upward and downward synchronously, and the support rod (210) is pulled to rotate by the hinged push rod 1 (211). The rotating support rod (210) cooperates with the push rod 2 (212) to push the clamping block (21) and the fixing seat (31) to move in the opposite direction, thereby completing the adjustment of the distance between the clamping block (21) and the fixing seat (31), so as to cope with the output shafts of high-voltage motors with different shaft diameters in thermal power plants; S2: The turning handle (34) drives the rotating rod (32) to rotate, and the rotating rod (32) drives the gear (33) to rotate. The gear (33) cooperates with the toothed plates (22) on both sides to push the two sets of clamping plates (2) to move away from each other, and at the same time compresses the corresponding spring 1 (23). In this process, the pawl plate (42) is continuously engaged and separated from the ratchet wheel (41) under the compression of the spring 2 (45), so as to limit the reverse rotation of the gear (33) and self-lock, thereby completing the expansion of the two sets of clamping plates (2); S3: Place two sets of clamping plates (2) on both sides of the output shaft of the high-voltage motor, and fit the bottom of the fixing seat (31) with the output shaft of the high-voltage motor. During this process, the output shaft of the high-voltage motor contacts the U-shaped abutting rod (47) and pushes it to drive the movable plate (44) to move upward, forcing the ratchet plate (42) to rise and separate from the ratchet wheel (41), automatically releasing the restriction on the reverse rotation of the gear (33). The two sets of clamping plates (2) move relative to each other under the compression elastic force of the spring 1 (23), clamping the output shaft of the high-voltage motor, and at the same time driving the two sets of clamping blocks (21) to be placed at the bottom of the output shaft of the high-voltage motor, thereby completing the clamping connection between the tool and the output shaft of the high-voltage motor; S4: The piston rod of the jack (14) extends to drive the movable plate (15) to move, so that the push column (16) on the movable plate (15) extends into the coupling and abuts against the end of the high-voltage motor output shaft. As the piston rod of the jack (14) continues to extend, the upper cross bar (19) and the lower cross bar (24) drive the clamping plate (2), the clamping block (21) to abut against the fixed seat (31) and one side of the coupling, thereby driving the coupling to move on the high-voltage motor output shaft, and completing the disassembly of the coupling.

Images