Local rotor pulling tool for large horizontal motor

Abstract

The invention belongs to the technical field of motor maintenance, and particularly relates to an on-site rotor pulling tool for a large horizontal motor. A clamping support A is fixedly connected to one end of the top of the motor stator, a clamping support B is fixedly connected to the end, away from the clamping support A, of the top of the motor stator, a cross beam A is arranged in the middle of the upper portion of the clamping support A, a cross beam B is arranged above the clamping support B, and a supporting frame is fixedly connected to the lower portion of the end, away from the cross beam A, of the cross beam B; universal hoof feet are arranged at the two ends of the bottom of the supporting frame, pressing plates are arranged at the positions, corresponding to the clamping support A and the clamping support B, above the cross beam A and the cross beam B correspondingly, clamping bolts are arranged at the two ends of each pressing plate, and the two pressing plates are fixedly connected with the two ends of the clamping support A and the two ends of the clamping support B through the two clamping bolts correspondingly; and reinforcing threaded rods are arranged on the two sides of the cross beam A and between the clamping support A and the clamping support B. The motor does not need to be integrally transferred, and maintenance of the large horizontal motor is completed on site.

Description

Technical Field

[0001] The invention belongs to the technical field of motor maintenance, and in particular relates to a large-scale horizontal motor on-site rotor extraction tool. Background Art

[0002] Many devices in large power plants are driven by large motors, and these large motors need regular inspection or maintenance. In the prior art, one method is to transport the motor offline to a special maintenance site for disassembly, and then use a special crank arm hoist to connect one end of the motor rotor to pull out the motor rotor. Existing problems: First, the equipment and facilities in large power plants are densely populated, and the transportation space for large motors is very limited, and transportation requires a lot of time and manpower; when the crank arm hoist pulls out the motor rotor, the rotor will inevitably shake up and down and left and right, and the risk of damage to the motor rotor and the motor stator is relatively high. Another method is to install a dummy shaft at one end of the motor rotor after the motor is disassembled, and use a crane to hoist the dummy shaft and the shaft head of the motor rotor respectively, and the motor rotor is pulled out by the crane translation. Existing problems: First, a larger maintenance space is required, and second, a crane must be used. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale horizontal motor on-site rotor extraction tool, which does not need to transport the motor as a whole and does not need the cooperation of a crane, and can complete the maintenance of the large-scale horizontal motor on-site.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A large-scale horizontal motor in-situ rotor extraction tool, wherein one end of the top of the motor stator is fixedly connected to an A clamping support, and the end of the top of the motor stator away from the A clamping support is fixedly connected to a B clamping support, an A beam is arranged in the middle of the upper part of the A clamping support, and a B beam is arranged above the B clamping support, and a support frame is fixedly connected below the end of the B beam away from the end of the A beam, and universal hoof feet are arranged at both ends of the bottom of the support frame, and pressure plates are arranged above the A beam and the B beam at positions corresponding to the A clamping support and the B clamping support respectively, and clamping bolts are arranged at both ends of the two pressure plates, and the two pressure plates are fixedly connected to the two ends of the A clamping support and the B clamping support respectively through two clamping bolts, and reinforcing threaded rods are arranged on both sides of the A beam between the A clamping support and the B clamping support; a dummy shaft adjustment mechanism is fixedly connected below the end of the A beam away from the B beam, and the dummy shaft adjustment mechanism is fixedly connected to the A clamping support and the B clamping support. A roller mechanism is fixedly connected to the bottom of the joint mechanism, and a telescopic dummy shaft for rotor maintenance is arranged inside the roller mechanism. The end of the telescopic dummy shaft for rotor maintenance close to the B beam is fixedly connected to a coupling, and the end of the telescopic dummy shaft for rotor maintenance close to the B beam is fixedly connected to the central axis of the motor rotor through a coupling; a rack is fixedly connected to the top and bottom of one side of the B beam, and a pulley bracket is slidably connected to the bottom of the B beam, and the inner ends of the pulley bracket are fixedly connected to roller shafts on both sides of the B beam, and the ends of the four roller shafts close to the B beam are rotatably sleeved with pulley rollers, and the upper middle part of the pulley bracket is rotatably connected to the rack side, and a pulley gear is fixedly sleeved at the position corresponding to the rack on the end of the gear shaft close to the B beam, and the bottom of the pulley bracket is fixedly connected to a rotor shaft adjustment mechanism, and the bottom of the rotor shaft adjustment mechanism is fixedly connected to a rotor shaft fixing frame.

[0006] The dummy shaft adjustment mechanism includes a fixed bracket, a horizontal screw, a screw handwheel, a linear guide, a slider, an upper support screw, an adjusting nut and a lower support screw. The lower end of the fixed bracket away from the motor stator is rotatably connected with a horizontal screw, the end of the horizontal screw away from the A beam is fixedly connected with a screw handwheel, the lower end of the fixed bracket close to the motor stator is fixedly connected with a linear guide, the lower part of the linear guide is slidably connected with a slider, the bottom of the slider is fixedly connected with an upper support screw, an adjusting nut is provided on the outer side of the upper support screw, a lower support screw is provided on the inner side of the end of the adjusting nut away from the upper support screw, the end of the lower support screw close to the upper support screw is connected with a flat key of the upper support screw, and the horizontal screw is connected to the slider screw.

[0007] The roller mechanism includes a roller bracket, a roller shaft, a dummy shaft roller and a retaining ring. The upper middle part of the roller bracket is fixedly connected to the lower supporting screw, the inner bottom of the roller bracket is fixedly connected to the roller shaft, both ends of the roller shaft are rotatably sleeved with dummy shaft rollers, and retaining rings are fixedly sleeved in the middle of the roller shaft and on the outer sides of the two dummy shaft rollers.

[0008] The rotor shaft fixing frame includes an upper clamping plate, a lower clamping plate, a supporting pad and a connecting threaded rod. Both ends of the upper clamping plate are threadedly connected to the connecting threaded rods. The ends of the two connecting threaded rods away from the upper clamping plate are respectively threadedly connected to the two ends of the lower clamping plate. The inner sides of the upper clamping plate and the lower clamping plate are fixedly connected to the supporting pads, and the middle parts of the two supporting pads are provided with grooves corresponding to the rotor shaft.

[0009] The structure of the rotor shaft adjustment mechanism is the same as that of the dummy shaft adjustment mechanism.

[0010] The ends of the four clamping bolts close to the motor stator are all provided with threaded holes, and the two ends of the two reinforcing threaded rods are respectively threadedly connected with the corresponding clamping bolts through the threaded holes.

[0011] Both A beam and B beam are I-beams.

[0012] One end of the B beam close to the motor stator is fixedly connected to the A beam by bolts and a steel plate.

[0013] The two dummy shaft rollers are rotatably connected to the roller shafts through tapered roller bearings.

[0014] One end of the gear shaft away from the B crossbeam is fixedly connected with a round wheel flange handwheel.

[0015] The beneficial effects achieved by the present invention are:

[0016] The present invention installs a crossbeam on the horizontal motor body, cooperates with a support frame and a universal shoe foot, and can use the crossbeam as a fulcrum and a slide rail. A roller mechanism for placing a telescopic dummy shaft and a pulley that can slide on the crossbeam are installed at both ends of the motor through the crossbeam. Through the cooperation of the telescopic dummy shaft and the pulley, the rotor can be directly pulled out from the stator on site without the need for lifting equipment.

[0017] The dummy shaft adjustment mechanism and the rotor shaft adjustment mechanism provided in the present invention can respectively realize the up and down adjustment and the left and right adjustment of the two ends of the motor rotor through the screw handwheel of the horizontal screw and the adjustment nut cooperating with the upper and lower supporting screws, with high adjustment accuracy and the position can be maintained after adjustment.

[0018] The dummy shaft adjustment mechanism and the rotor shaft adjustment mechanism of the present invention are both rigid mechanisms, and the rotor will not shake left and right when being pulled out, thereby avoiding collision between the rotor and the stator.

[0019] The invention requires less space for use and is convenient for overhauling large horizontal motors.

[0020] The present invention does not need to transport the motor as a whole and does not need the cooperation of a crane, and can complete the maintenance of the large horizontal motor on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the rotor removal structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure in which the rotor of the present invention has not been removed;

[0023] Figure 3 For the present invention Figure 1 A schematic diagram of a top view structure;

[0024] Figure 4 for Figure 1 A magnified view of the square area at F;

[0025] Figure 5 for Figure 1 A magnified image of the square area at G;

[0026] Figure 6 for Figure 1 AA direction profile;

[0027] Figure 7 for Figure 1 BB direction profile;

[0028] Figure 8 for Figure 1 CC direction profile;

[0029] Fig. 9 for Figure 1 DD direction profile;

[0030] Fig.10 for Figure 5 EE direction profile;

[0031] In the figure: 1. Motor stator; 2. Motor rotor; 3. Clamping support A; 4. Crossbeam A; 5. Crossbeam B; 6. Clamping bolt; 7. Threaded hole; 8. Pressure plate; 9. Dummy shaft adjustment mechanism; 10. Reinforcement threaded rod; 11. Roller mechanism; 12. Telescopic dummy shaft for rotor maintenance; 13. Rack; 14. Pulley bracket; 15. Rotor shaft adjustment mechanism; 16. Rotor shaft fixing frame; 17. Support frame; 18. Universal shoe foot; 19. Coupling; 20. Clamping support B; 21. Roller Axis; 22, gear shaft; 23, pulley gear; 24, round rim handwheel; 25, pulley roller; 91, fixed bracket; 92, horizontal screw; 93, screw handwheel; 94, linear guide; 95, slider; 96, upper support screw; 97, adjusting nut; 98, lower support screw; 111, roller bracket; 112, roller shaft; 113, dummy shaft roller; 114, retaining ring; 161, upper clamp; 162, lower clamp; 163, support pad; 164, connecting threaded rod. DETAILED DESCRIPTION

[0032] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The basic design principle of the present invention is: by installing a crossbeam on the stator of a horizontal motor, and installing a telescopic dummy shaft and a pulley that can slide on the crossbeam at both ends of the motor through the crossbeam, the telescopic dummy shaft and the rotor shaft fixing frame are respectively fixedly connected to the two ends of the rotor shaft, and the two ends of the motor rotor can be adjusted up and down and left and right respectively through the dummy shaft adjustment mechanism and the rotor shaft adjustment mechanism. A rack is set on the crossbeam, and the gear on the pulley is driven by a handwheel, which cooperates with the rack to realize the horizontal movement of the pulley, and the rotor is pulled out on the spot.

[0034] according to Figure 1 , Figure 3 , Figure 7 and Figure 8 , a horizontal motor in-situ rotor extraction tool, wherein one end of the top of the motor stator 1 is fixedly connected to an A clamping support 3, and one end of the top of the motor stator 1 away from the A clamping support 3 is fixedly connected to a B clamping support 20, an A crossbeam 4 is arranged in the middle of the upper part of the A clamping support 3, and a B crossbeam 5 is arranged above the B clamping support 20, and a support frame 17 is fixedly connected to the lower end of the B crossbeam 5 away from the A crossbeam 4, and both ends of the bottom of the support frame 17 are A universal shoe foot 18 is provided, and pressure plates 8 are provided above the A crossbeam 4 and the B crossbeam 5 at positions corresponding to the A clamping support 3 and the B clamping support 20 respectively. Clamping bolts 6 are provided at both ends of the two pressure plates 8. The two pressure plates 8 are fixedly connected to the two ends of the A clamping support 3 and the B clamping support 20 respectively through two clamping bolts 6, and reinforcing threaded rods 10 are provided on both sides of the A crossbeam 4 between the A clamping support 3 and the B clamping support 20.

[0035] according to Figure 1 , Figure 2 and Figure 6 A dummy shaft adjustment mechanism 9 is fixedly connected to the lower part of the end of the A beam 4 away from the B beam 5, and a roller mechanism 11 is fixedly connected to the bottom of the dummy shaft adjustment mechanism 9. A telescopic dummy shaft 12 for rotor maintenance is arranged inside the roller mechanism 11. A coupling 19 is fixedly connected to the end of the telescopic dummy shaft 12 for rotor maintenance close to the B beam 5. The end of the telescopic dummy shaft 12 for rotor maintenance close to the B beam 5 is fixedly connected to the central axis of the motor rotor 2 through the coupling 19.

[0036] according to Figure 1 , Figure 5 , Fig. 9 and Fig.10A rack 13 is fixedly connected to the bottom of the top of one side of the B crossbeam 5, and a pulley bracket 14 is slidably connected to the bottom of the B crossbeam 5. The inner ends of the pulley bracket 14 are fixedly connected to roller shafts 21 on both sides of the B crossbeam 5, and the four roller shafts 21 are rotatably sleeved with pulley rollers 25 at one end close to the B crossbeam 5. A gear shaft 22 is rotatably connected to the side of the rack 13 at the upper middle part of the pulley bracket 14, and a pulley gear 23 is fixedly sleeved at a position corresponding to the rack 13 at one end of the gear shaft 22 close to the B crossbeam 5, and a round wheel rim handwheel 24 is fixedly connected to the end of the gear shaft 22 away from the B crossbeam 5, and a rotor shaft adjusting mechanism 15 is fixedly connected to the bottom of the pulley bracket 14, and a rotor shaft fixing frame 16 is fixedly connected to the bottom of the rotor shaft adjusting mechanism 15.

[0037] according to Figure 4 and Figure 6 The pseudo-axis adjustment mechanism 9 includes a fixed bracket 91, a horizontal screw rod 92, a screw handwheel 93, a linear guide rail 94, a slider 95, an upper support screw rod 96, an adjusting nut 97 and a lower support screw rod 98. The fixed bracket 91 is rotatably connected to the end away from the motor stator 1 below the horizontal screw rod 92, and the end of the horizontal screw rod 92 away from the A cross beam 4 is fixedly connected to the screw handwheel 93. The fixed bracket 91 is fixedly connected to the end close to the motor stator 1 below the linear guide rail 94, and the slider 95 is slidably connected to the bottom of the linear guide rail 94. The upper support screw rod 96 is fixedly connected to the bottom of the slider 95, and an adjusting nut 97 is arranged on the outer side of the upper support screw rod 96. The lower support screw rod 98 is arranged on the inner side of the end of the adjusting nut 97 away from the upper support screw rod 96. The end of the lower support screw rod 98 close to the upper support screw rod 96 is flat-keyed to the upper support screw rod 96, and the horizontal screw rod 92 is screw-connected to the slider 95.

[0038] according to Figure 6 The roller mechanism 11 includes a roller bracket 111, a roller shaft 112, a dummy shaft roller 113 and a retaining ring 114. The upper middle part of the roller bracket 111 is fixedly connected to the lower supporting screw 98, and the inner bottom of the roller bracket 111 is fixedly connected with the roller shaft 112. Both ends of the roller shaft 112 are rotatably sleeved with dummy shaft rollers 113. The roller shaft 112 is fixedly sleeved with retaining rings 114 in the middle and on the outer sides of the two dummy shaft rollers 113.

[0039] according to Fig. 9The rotor shaft fixing frame 16 includes an upper clamping plate 161, a lower clamping plate 162, a support pad 163 and a connecting threaded rod 164. Both ends of the upper clamping plate 161 are threadedly connected with the connecting threaded rod 164. The ends of the two connecting threaded rods 164 away from the upper clamping plate 161 are respectively threadedly connected with the two ends of the lower clamping plate 162. The inner sides of the upper clamping plate 161 and the lower clamping plate 162 are fixedly connected with the support pad 163. The middle parts of the two support pads 163 are provided with grooves corresponding to the rotor shaft.

[0040] The structure of the rotor shaft adjusting mechanism 15 is the same as that of the dummy shaft adjusting mechanism 9 .

[0041] according to Figure 8 The four clamping bolts 6 are each provided with a threaded hole 7 at one end close to the motor stator 1 , and both ends of the two reinforcing threaded rods 10 are respectively threadedly connected to the corresponding clamping bolts 6 through the threaded holes 7 .

[0042] according to Figure 1 and Fig. 9 The A crossbeam 4 and the B crossbeam 5 are both I-beams, and one end of the B crossbeam 5 close to the motor stator 1 is fixedly connected to the A crossbeam 4 by bolts and a steel plate.

[0043] The two dummy shaft rollers 113 are both rotatably connected to the roller shaft 112 via tapered roller bearings.

[0044] A horizontal motor in-situ rotor extraction tool comprises a motor stator 1 and a motor rotor 2, wherein one end of the top of the motor stator 1 is fixedly connected to an A clamping support 3, and one end of the top of the motor stator 1 away from the A clamping support 3 is fixedly connected to a B clamping support 20, an A crossbeam 4 is arranged in the middle above the A clamping support 3, and a B crossbeam 5 is arranged above the B clamping support 20, and both the A crossbeam 4 and the B crossbeam 5 are I-beams, and one end of the B crossbeam 5 close to the motor stator 1 is fixedly connected to the A crossbeam 4 by bolts and a steel plate, and a support frame 17 is fixedly connected below the end of the B crossbeam 5 away from the A crossbeam 4, and universal hoof feet 18 are arranged at both ends of the bottom of the support frame 17, and by installing the crossbeam on the horizontal motor body, in combination with the support frame 17 and the universal hoof feet 18, the crossbeam can be used as a fulcrum and a slide rail without setting up a lifting device.

[0045] Pressure plates 8 are provided above the A crossbeam 4 and the B crossbeam 5 at positions corresponding to the A clamping support 3 and the B clamping support 20 respectively, and clamping bolts 6 are provided at both ends of the two pressure plates 8. The two pressure plates 8 are fixedly connected to the two ends of the A clamping support 3 and the B clamping support 20 respectively through the two clamping bolts 6, and reinforcing threaded rods 10 are provided on both sides of the A crossbeam 4 between the A clamping support 3 and the B clamping support 20. Threaded holes 7 are opened at one end of the four clamping bolts 6 close to the motor stator 1, and both ends of the two reinforcing threaded rods 10 are threadedly connected to the corresponding clamping bolts 6 through the threaded holes 7, so as to reinforce the A crossbeam and the B crossbeam.

[0046] A dummy shaft adjustment mechanism 9 is fixedly connected to the lower end of the A crossbeam 4 away from the B crossbeam 5. The dummy shaft adjustment mechanism 9 includes a fixed bracket 91, a horizontal screw rod 92, a screw rod hand wheel 93, a linear guide rail 94, a slider 95, an upper support screw rod 96, an adjustment nut 97 and a lower support screw rod 98. The lower end of the fixed bracket 91 away from the motor stator 1 is rotatably connected to the horizontal screw rod 92, and the end of the horizontal screw rod 92 away from the A crossbeam 4 is fixedly connected to the screw rod hand wheel 93. The lower end of the fixed bracket 91 close to the motor stator 1 is fixedly connected to the linear guide rail 94. The lower end of the linear guide rail 94 is fixedly connected to the motor stator 1. A slider 95 is slidably connected to the square, and an upper supporting screw rod 96 is fixedly connected to the bottom of the slider 95. An adjusting nut 97 is arranged on the outer side of the upper supporting screw rod 96, and a lower supporting screw rod 98 is arranged on the inner side of the end of the adjusting nut 97 away from the upper supporting screw rod 96. The end of the lower supporting screw rod 98 close to the upper supporting screw rod 96 is connected with the upper supporting screw rod 96 with a flat key. The horizontal screw rod 92 is screw-connected to the slider 95. The horizontal position and lifting height of the lower supporting screw rod 98 can be adjusted by the screw handwheel 93 of the horizontal screw rod 92 and the adjusting nut 97 cooperating with the upper and lower supporting screw rods.

[0047] The bottom of the dummy shaft adjustment mechanism 9 is fixedly connected with a roller mechanism 11, which includes a roller bracket 111, a roller shaft 112, a dummy shaft roller 113 and a retaining ring 114. The upper middle part of the roller bracket 111 is fixedly connected to the lower support screw 98, and the inner bottom of the roller bracket 111 is fixedly connected with a roller shaft 112. Both ends of the roller shaft 112 are rotatably sleeved with dummy shaft rollers 113. The roller shaft 112 is fixedly sleeved with retaining rings 114 in the middle and on the outer sides of the two dummy shaft rollers 113. The two dummy shaft rollers 113 are rotatably connected to the roller shaft 112 through tapered roller bearings. A telescopic dummy shaft 12 for rotor maintenance is arranged inside the roller mechanism 11. The telescopic dummy shaft 12 for rotor maintenance is slidably connected to the roller bracket 111 through the two dummy shaft rollers 113. The end of the telescopic dummy shaft 12 for rotor maintenance close to the B beam 5 is fixedly connected with a coupling 19. The end of the telescopic dummy shaft 12 for rotor maintenance close to the B beam 5 is fixedly connected to the central axis of the motor rotor 2 through the coupling 19.

[0048] A rack 13 is fixedly connected to the bottom of the top of one side of the B beam 5, and a pulley bracket 14 is slidably connected to the bottom of the B beam 5. The inner ends of the pulley bracket 14 are fixedly connected to roller shafts 21 on both sides of the B beam 5, and the four roller shafts 21 are rotatably sleeved with pulley rollers 25 at one end close to the B beam 5. A gear shaft 22 is rotatably connected to the side of the upper middle part of the pulley bracket 14 close to the rack 13. A pulley gear 23 is fixedly sleeved at a position corresponding to the rack 13 at one end of the gear shaft 22 close to the B beam 5, and a round rim handwheel 24 is fixedly connected to the end of the gear shaft 22 away from the B beam 5. The round rim handwheel 24 can be rotatably driven to drive the pulley bracket 14 through the cooperation of the pulley gear 23 and the rack 13, and move under the B beam 5 through the four pulley rollers 25.

[0049] A rotor shaft adjusting mechanism 15 is fixedly connected to the bottom of the pulley bracket 14. The structure of the rotor shaft adjusting mechanism 15 is the same as that of the dummy shaft adjusting mechanism 9. The dummy shaft adjusting mechanism 9 and the rotor shaft adjusting mechanism 15 provided in the present invention can respectively adjust the horizontal position and the lifting height of the two ends of the motor rotor 2 through the screw handwheel 93 of the horizontal screw 92 and the adjusting nut 97 that cooperates with the upper and lower supporting screws. The adjustment accuracy is high, and both the dummy shaft adjusting mechanism 9 and the rotor shaft adjusting mechanism 15 are rigid mechanisms. Compared with the existing electric hoist lifting, the rotor will not shake left and right when being pulled out, thereby avoiding the collision between the rotor and the stator.

[0050] The bottom lower support screw 98 of the rotor shaft adjustment mechanism 15 is fixedly connected to the rotor shaft fixing frame 16, and the rotor shaft fixing frame 16 includes an upper clamping plate 161, a lower clamping plate 162, a support pad 163 and a connecting threaded rod 164. Both ends of the upper clamping plate 161 are threadedly connected to the connecting threaded rod 164, and the ends of the two connecting threaded rods 164 away from the upper clamping plate 161 are respectively threadedly connected to the two ends of the lower clamping plate 162, and the inner sides of the upper clamping plate 161 and the lower clamping plate 162 are fixedly connected to the support pad 163, and the middle parts of the two support pads 163 are provided with grooves corresponding to the rotor shaft.

Claims

1. A large-scale horizontal motor rotor extraction tool, characterized in that: One end of the top of the motor stator is fixedly connected to a clamping support A, and the end of the top of the motor stator away from the clamping support A is fixedly connected to a clamping support B. A beam is arranged in the middle of the upper part of the A clamping support, and a beam B is arranged above the B clamping support. A support frame is fixedly connected below the end of the B beam away from the end of the A beam, and universal hoof feet are arranged at both ends of the bottom of the support frame. Pressure plates are arranged above the A beam and the B beam at positions corresponding to the A clamping support and the B clamping support respectively, and clamping bolts are arranged at both ends of the two pressure plates. The two pressure plates are fixedly connected to the two ends of the A clamping support and the B clamping support respectively through two clamping bolts, and reinforcing threaded rods are arranged on both sides of the A beam between the A clamping support and the B clamping support; a dummy shaft adjustment mechanism is fixedly connected below the end of the A beam away from the B beam, and the bottom of the dummy shaft adjustment mechanism is fixed A roller mechanism is connected, and a telescopic dummy shaft for rotor maintenance is arranged inside the roller mechanism. The end of the telescopic dummy shaft for rotor maintenance close to the B beam is fixedly connected with a coupling, and the end of the telescopic dummy shaft for rotor maintenance close to the B beam is fixedly connected to the central axis of the motor rotor through the coupling; a rack is fixedly connected to the bottom of the top of one side of the B beam, and a pulley bracket is slidably connected to the bottom of the B beam, and the inner ends of the pulley bracket are fixedly connected with roller shafts on both sides of the B beam, and the ends of the four roller shafts close to the B beam are rotatably sleeved with pulley rollers, and the upper middle part of the pulley bracket is rotatably connected to the rack side, and a pulley gear is fixedly sleeved at the position corresponding to the rack on the end of the gear shaft close to the B beam, and the bottom of the pulley bracket is fixedly connected to the rotor shaft adjustment mechanism, and the bottom of the rotor shaft adjustment mechanism is fixedly connected to the rotor shaft fixing frame.

2. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: The dummy shaft adjustment mechanism includes a fixed bracket, a horizontal screw, a screw handwheel, a linear guide, a slider, an upper support screw, an adjusting nut and a lower support screw. The lower end of the fixed bracket away from the motor stator is rotatably connected with a horizontal screw, the end of the horizontal screw away from the A beam is fixedly connected with a screw handwheel, the lower end of the fixed bracket close to the motor stator is fixedly connected with a linear guide, the lower part of the linear guide is slidably connected with a slider, the bottom of the slider is fixedly connected with an upper support screw, an adjusting nut is provided on the outer side of the upper support screw, a lower support screw is provided on the inner side of the end of the adjusting nut away from the upper support screw, the end of the lower support screw close to the upper support screw is connected with a flat key of the upper support screw, and the horizontal screw is connected to the slider screw.

3. The large-scale horizontal motor in-situ rotor extraction tool according to claim 2 is characterized in that: The roller mechanism includes a roller bracket, a roller shaft, a dummy shaft roller and a retaining ring. The upper middle part of the roller bracket is fixedly connected to the lower supporting screw, the inner bottom of the roller bracket is fixedly connected to the roller shaft, both ends of the roller shaft are rotatably sleeved with dummy shaft rollers, and retaining rings are fixedly sleeved in the middle of the roller shaft and on the outer sides of the two dummy shaft rollers.

4. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: The rotor shaft fixing frame includes an upper clamping plate, a lower clamping plate, a supporting pad and a connecting threaded rod. Both ends of the upper clamping plate are threadedly connected to the connecting threaded rods. The ends of the two connecting threaded rods away from the upper clamping plate are respectively threadedly connected to the two ends of the lower clamping plate. The inner sides of the upper clamping plate and the lower clamping plate are fixedly connected to the supporting pads, and the middle parts of the two supporting pads are provided with grooves corresponding to the rotor shaft.

5. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: The structure of the rotor shaft adjustment mechanism is the same as that of the dummy shaft adjustment mechanism.

6. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: The ends of the four clamping bolts close to the motor stator are all provided with threaded holes, and the two ends of the two reinforcing threaded rods are respectively threadedly connected with the corresponding clamping bolts through the threaded holes.

7. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: Both A beam and B beam are I-beams.

8. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1 is characterized in that: One end of the B beam close to the motor stator is fixedly connected to the A beam by bolts and a steel plate.

9. The large-scale horizontal motor in-situ rotor extraction tool according to claim 3, characterized in that: The two dummy shaft rollers are rotatably connected to the roller shafts through tapered roller bearings.

10. The large-scale horizontal motor in-situ rotor extraction tool according to claim 1, characterized in that: One end of the gear shaft away from the B crossbeam is fixedly connected with a round wheel flange handwheel.

Images