Maintenance device for collecting ring of hydropower station unit

Abstract

The utility model discloses a hydropower station unit collector ring maintenance device, which relates to the technical field of collector ring maintenance, and comprises a bottom ring, a gear ring is rotatably arranged in the bottom ring in a penetrating manner, a support frame is fixedly arranged on the inner wall of the gear ring, a bidirectional screw rod is rotatably arranged in the support frame in a penetrating manner, and two symmetrically arranged sliding plates are sleeved on a thread of the bidirectional screw rod. A rotating rod is rotatably arranged at the end of the sliding plate in a penetrating mode, a transmission wheel fixedly sleeves the rod wall of the rotating rod, an elastic telescopic rod is fixedly arranged on the outer wall of the supporting frame, a connecting block is fixedly arranged at the end of the elastic telescopic rod, a driving motor is fixedly arranged at the end of the connecting block, and a driving wheel fixedly sleeves an output shaft of the driving motor; a grinding belt is arranged between the driving wheel and the transmission wheel in a penetrating mode, and the top of the bidirectional lead screw penetrates out of the supporting frame and is fixedly provided with a rotating block. The grinding height of the device can be conveniently adjusted according to the specification of the outer wall of the collecting ring, so that the outer abrasion area of the collecting ring can be stably and uniformly ground, and the maintenance effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of slip ring maintenance technology, specifically to a slip ring maintenance device for hydropower station units. Background Technology

[0002] In hydroelectric generators, the slip ring is an important component of the rotor current collection device, forming a complete current collection structure together with the brushes and brush holders. During the operation of the hydroelectric power station unit, the slip ring and the brushes will rub against each other continuously. After long-term use, the surface of the slip ring may wear out, resulting in an uneven surface. Therefore, the slip ring needs to be inspected and polished.

[0003] A search revealed a patent document with publication number CN117400107A that discloses a device for overhauling the slip ring of a hydropower station unit. This device can perform 360-degree all-around grinding of the slip ring body. By replacing traditional manual grinding with an automated grinding method, both the grinding accuracy and grinding efficiency are greatly improved.

[0004] However, the placement of the grinding components in the above-mentioned device is relatively limited, and the grinding height cannot be easily adjusted according to the longitudinal height of the slip ring, which makes it impossible for the outer wall of the slip ring to be ground evenly. Utility Model Content

[0005] In view of the problems existing in the current hydropower station unit collector ring maintenance device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a hydropower station unit slip ring maintenance device, which solves the problem that the setting position of the grinding component in the existing maintenance device is relatively limited and the grinding height cannot be conveniently adjusted according to the longitudinal height of the slip ring.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hydropower station unit collector ring maintenance device includes a bottom ring, a toothed ring rotatably passing through the inside of the bottom ring, a support frame fixedly mounted on the inner wall of the toothed ring, a bidirectional lead screw rotatably passing through the inside of the support frame, two symmetrically arranged sliding plates being threaded onto the threaded part of the bidirectional lead screw, a rotating rod rotatably passing through the end of the sliding plate, a transmission wheel fixedly mounted on the wall of the rotating rod, an elastic telescopic rod fixedly mounted on the outer wall of the support frame, a connecting block fixedly mounted on the end of the elastic telescopic rod, a drive motor fixedly mounted on the end of the connecting block, a drive wheel fixedly mounted on the output shaft of the drive motor, and a grinding belt passing between the drive wheel and the transmission wheel.

[0009] The top of the bidirectional lead screw extends through the support frame and is fixedly fitted with a rotating block.

[0010] Preferably, a mounting plate is fixedly provided at the top of the bottom ring. A control motor is fixedly provided at the upper end of the outer wall of the mounting plate. The output shaft of the control motor penetrates through the mounting plate and is fixedly sleeved with a driving gear, and the driving gear is arranged in cooperation with a toothed ring.

[0011] Preferably, a clamping airbag is fixedly provided on the inner wall of the bottom ring. The upper end of the clamping airbag penetrates through the toothed ring and extends to the outside. An inflation pipe is communicated with the outer wall of the clamping airbag, and a threaded plug is threadedly inserted through the pipe opening of the inflation pipe.

[0012] Preferably, the support frame is arranged in a U shape and is provided with a through hole inside for the transmission of the polishing belt.

[0013] Furthermore, the clamping airbag is arranged in a "convex" shape.

[0014] Preferably, the outer wall of the toothed ring is rotationally fitted with the inner wall of the bottom ring through a bearing ring.

[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0016] 1. In the present utility model, by rotating the rotating block at the top of the bidirectional screw rod, the two symmetrical sliding plates can be driven to move on the bidirectional screw rod, thereby adjusting the height of the polishing belt. It can flexibly and conveniently adjust the polishing position according to the longitudinal height of different worn areas of the slip ring, so that each worn area on the outer wall of the slip ring can be effectively polished, solving the problems of the limited position of the polishing component and the inability to conveniently adjust the polishing height in the traditional device.

[0017] 2. In the present utility model, by driving the driving gear by the control motor, the toothed ring and the connected polishing component are driven to rotate, and the slip ring can be polished at different angular positions, realizing 360-degree full-range maintenance to ensure that the wear problems of each part of the slip ring can be handled.

[0018] 3. In the present utility model, through the provided clamping airbag, after being inflated and expanded through the inflation pipe, it can be firmly stuck on the outer wall of the slip ring, and the threaded plug is used to prevent air leakage, making the installation of the device simple and the fixation firm, ensuring the smooth progress of the maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0020] Figure 1 It is a structural schematic diagram of the present utility model;

[0021] Figure 2This is an enlarged schematic diagram of a portion of the structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the clamping airbag of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Bottom ring; 2. Gear ring; 3. Support frame; 4. Two-way lead screw; 5. Slide plate; 6. Rotating rod; 7. Transmission wheel; 8. Elastic telescopic rod; 9. Connecting block; 10. Drive motor; 11. Drive wheel; 12. Grinding belt; 13. Rotating block; 14. Mounting plate; 15. Control motor; 16. Drive gear; 17. Clamping airbag; 18. Inflation tube; 19. Threaded plug. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses a device for overhauling the collector ring of a hydropower station unit.

[0027] This utility model provides, for example Figure 1-3 The device for overhauling the collector ring of a hydropower station unit shown includes a bottom ring 1. A toothed ring 2 is rotatably inserted inside the bottom ring 1. The outer wall of the toothed ring 2 is rotatably engaged with the inner wall of the bottom ring 1 through a bearing ring. A support frame 3 is fixedly installed on the inner wall of the toothed ring 2. A bidirectional lead screw 4 is rotatably inserted inside the support frame 3. Two symmetrically arranged sliding plates 5 are threaded onto the threaded part of the bidirectional lead screw 4. A rotating rod 6 is rotatably inserted at the end of the sliding plate 5. A transmission wheel 7 is fixedly fitted on the rod wall of the rotating rod 6. An elastic telescopic rod 8 is fixedly installed on the outer wall of the support frame 3. A connecting block 9 is fixedly installed at the end of the elastic telescopic rod 8. A drive motor 10 is fixedly installed at the end of the connecting block 9. A drive wheel 11 is fixedly fitted on the output shaft of the drive motor 10. A grinding belt 12 is inserted between the drive wheel 11 and the transmission wheel 7. The support frame 3 is U-shaped and has a through hole for engaging the grinding belt 12. The top of the bidirectional lead screw 4 passes through the support frame 3 and is fixedly fitted with a rotating block 13.

[0028] A mounting plate 14 is fixedly installed on the top of the bottom ring 1. A control motor 15 is fixedly installed on the upper end of the outer wall of the mounting plate 14. The output shaft of the control motor 15 passes through the mounting plate 14 and is fixedly fitted with a drive gear 16. The drive gear 16 is configured to cooperate with the gear ring 2.

[0029] Move the bottom ring 1 under the slip ring so that the slip ring is located at the center of the bottom ring 1 and the bottom ring 1 is stably clamped outside the slip ring. Subsequently, according to the longitudinal height of the area of the slip ring that needs to be polished, rotate the rotating block 13. The rotating block 13 drives the bidirectional screw rod 4 to rotate. Since two symmetrically arranged sliding plates 5 are threadedly sleeved on the bidirectional screw rod 4, when the bidirectional screw rod 4 rotates, the two sliding plates 5 will move relatively or away from each other along the thread direction of the bidirectional screw rod 4. The movement of the sliding plate 5 will drive the rotating rod 6 and the transmission wheel 7 on the rotating rod 6 to move synchronously, thereby adjusting the height of the polishing belt 12 to make it at the same height as the area of the slip ring to be polished, achieving convenient adjustment of the polishing height, ensuring that the worn area outside the slip ring can be polished. After adjusting the height of the polishing belt 12, start the driving motor 10. The output shaft of the driving motor 10 drives the driving wheel 11 to rotate. The driving wheel 11 drives the transmission wheel 7 to rotate through the polishing belt 12, so that the polishing belt 12 starts to rotate in a cycle to polish the outer wall of the slip ring. During the polishing process, the elastic telescopic rod 8 plays a certain buffering and adjusting role, ensuring that the polishing belt 12 always maintains good contact with the outer wall of the slip ring and can automatically adjust the position of the polishing belt 12 according to the unevenness of the outer wall of the slip ring, so that the worn area outside the slip ring can be polished stably and evenly, improving the maintenance effect;

[0030] When polishing different positions of the slip ring, start the control motor 15. The output shaft of the control motor 15 drives the driving gear 16 to rotate. The driving gear 16 meshes with the toothed ring 2, thereby driving the toothed ring 2 to rotate inside the bottom ring 1. When the toothed ring 2 rotates, the support frame 3 fixed on its inner wall and the entire polishing assembly on the support frame 3 will rotate accordingly, realizing polishing of different angular positions of the slip ring, ensuring that all areas of the outer wall of the slip ring can be fully maintained.

[0031] In order to enable the device to be stably clamped outside the slip ring and ensure the stable progress of the maintenance work, as Figure 1 and Figure 3 shown, a clamping airbag 17 is fixedly arranged on the inner wall of the bottom ring 1. The upper end of the clamping airbag 17 passes through the toothed ring 2 and extends to the outside. An air charging pipe 18 is communicated with the outer wall of the clamping airbag 17. A threaded plug 19 is threadedly penetrated through the pipe orifice of the air charging pipe 18. The clamping airbag 17 is arranged in a "convex" shape.

[0032] When the bottom ring 1 is located outside the slip ring, inflate the clamping airbag 17 through the air charging pipe 18. Since the clamping airbag 17 is arranged in a "convex" shape, its upper end will expand outwards after inflation and tightly clamp on the outer wall of the slip ring, thereby stably fixing the entire maintenance device outside the slip ring. After inflation, tighten the threaded plug 19 to prevent gas leakage, ensure that the clamping airbag 17 always maintains a stable clamping force, and ensure the stable progress of the maintenance work.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for overhauling a collector ring of a hydroelectric power station unit, comprising a base ring (1), characterized in that, A toothed ring (2) is rotatably arranged inside the bottom ring (1). A support frame (3) is fixedly arranged on the inner wall of the toothed ring (2). A bidirectional screw rod (4) is rotatably arranged inside the support frame (3). Two symmetrically arranged sliding plates (5) are sleeved on the threads of the bidirectional screw rod (4). A rotating rod (6) is rotatably arranged at the end of the sliding plate (5). A transmission wheel (7) is fixedly sleeved on the rod wall of the rotating rod (6). An elastic telescopic rod (8) is fixedly arranged on the outer wall of the support frame (3). A connecting block (9) is fixedly arranged at the end of the elastic telescopic rod (8). A driving motor (10) is fixedly arranged at the end of the connecting block (9). A driving wheel (1l) is fixedly sleeved on the output shaft of the driving motor (10). A grinding belt (12) is arranged between the driving wheel (11) and the transmission wheel (7). The top of the bidirectional screw rod (4) penetrates out of the support frame (3) and is fixedly provided with a rotating block (13).

2. The generator ring maintenance device for a hydroelectric generating set according to claim 1, characterized in that, An installation plate (14) is fixedly arranged on the top of the bottom ring (1). A control motor (15) is fixedly arranged on the upper end of the outer wall of the installation plate (14). The output shaft of the control motor (15) penetrates out of the installation plate (14) and is fixedly sleeved with a driving gear (16). The driving gear (16) is arranged in cooperation with the toothed ring (2).

3. The generator ring maintenance device for a hydroelectric generating set according to claim 1, characterized in that, A clamping air bag (17) is fixedly arranged on the inner wall of the bottom ring (1). The upper end of the clamping air bag (17) penetrates out of the toothed ring (2) and extends to the outside. An air charging pipe (18) is communicated with the outer wall of the clamping air bag (17). A threaded plug (19) is threadedly arranged at the pipe opening of the air charging pipe (18).

4. The generator ring maintenance device for a hydroelectric generating set according to claim 1, characterized in that, The support frame (3) is arranged in a U shape and is provided with a through hole inside for the transmission of the grinding belt (12).

5. The generator ring maintenance device of the hydroelectric generating set according to claim 3, characterized in that, The clamping air bag (17) is arranged in a "convex" shape.

6. The generator ring maintenance device of the hydroelectric generating set according to claim 1, characterized in that, The outer wall of the toothed ring (2) is rotatably matched with the inner wall of the bottom ring (1) through a bearing ring.

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