Generator rotor magnetic pole pressing plate machining clamp

Abstract

The utility model discloses a generator rotor magnetic pole pressing plate machining clamp which comprises a shell, a disc and a positioning plate, the disc is fixed to the top of the shell, a plurality of guide grooves are formed in the surface of the disc, mounting holes are formed in the surface of the positioning plate, a rotating shaft is rotationally connected to the inner wall of the shell, and the top of the rotating shaft is rotationally connected with the bottom of the disc. A worm wheel and a driving disc are fixed to the surface of the rotating shaft, a worm is meshed with the surface of the worm wheel, two side plates are fixed to the inner wall of the shell, a plurality of arc-shaped grooves are formed in the surface of the driving disc, rollers are slidably connected to the inner walls of the arc-shaped grooves, movable blocks are rotatably connected to the tops of the rollers, and the movable blocks are slidably connected with the surfaces of the guide grooves. A supporting shell is fixed to the top of the movable block. The clamp has the advantages that the positions of the multiple positioning plates on the surface of the disc can be simultaneously and rapidly adjusted, the time for repeatedly disassembling and assembling bolts on the surfaces of the positioning plates is saved, and the use efficiency of the clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pole pressure plate processing, in particular to a generator rotor magnetic pole pressure plate processing fixture. Background Art

[0002] The size and uniformity of the gap between the outer circle of the rotor and the inner circle of the stator of a hydro-turbine generator set have an important impact on the performance of the hydro-turbine generator. In small and medium-sized hydro-turbine generators, the single-side gap between the rotor and the stator is generally controlled at around 10mm to 25mm. The processing quality of the outer edge of the magnetic pole plate used to fix the rotor magnetic pole will directly affect the size and uniformity of the gap between the rotor and the stator.

[0003] Because the pole plate itself is not a full circle, but rather a portion of the outer edge, it must be machined using a fixture and a lathe. The conventional fixture for machining pole plates is a circular disc with an outer diameter slightly smaller than the diameter of the circle formed by the outer edge of the pole plate. To ensure machining quality, the pole plate is typically secured to the disc using dowel pins and bolts. The disc is then secured to the lathe for machining.

[0004] A Chinese patent with publication number CN202943440U was searched and disclosed a fixture for machining magnetic pole pressure plates of a hydro-generator rotor.

[0005] The utility model includes a disc and a positioning plate, the diameter of the disc is greater than 6000mm, and pin holes I and screw holes I are evenly arranged at intervals of 100mm in the circumferential direction between the diameter of the disc at φ700mm and φ6000mm, and pin holes II and screw holes II matching the pin holes I and screw holes I are arranged on the positioning plate; and a positioning pin hole I and a tightening screw hole I are also arranged on the positioning plate, the positioning pin hole I matches the positioning pin hole II of the magnetic pole pressure plate, and the tightening screw hole I matches the magnetic pole pressure plate fixing screw hole II, the shape of the positioning plate is similar to that of the magnetic pole pressure plate and the outer edge diameter thereof is slightly smaller than the outer edge diameter of the magnetic pole pressure plate, and the outer edge diameter refers to the diameter of the circle formed by the outer edge; a set of clamps of the utility model can be applied to the processing of magnetic pole pressure plates of various specifications.

[0006] However, this patent still has the following problems: when the device fixes the positioning plate, it is necessary to first confirm the position of the positioning plate on the surface of the disc according to the size of the magnetic pole pressure plate, and then fix the positioning plate to the surface of the disc by using bolts. However, when replacing magnetic pole pressure plates of different sizes, it is necessary to remove the bolts and readjust the surface position of the positioning plate before installing and fixing it, which makes the operation inconvenient and affects the processing efficiency. Utility Model Content

[0007] The purpose of the utility model is to provide a generator rotor pole pressure plate processing fixture, which can simultaneously and quickly adjust the positions of multiple positioning plates on the surface of the disc, saving the time of disassembling and assembling the bolts on the surface of the positioning plates, and improving the efficiency of the fixture.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a generator rotor pole pressure plate processing fixture, comprising a shell, a disc and a positioning plate, the disc is fixed on the top of the shell, a plurality of guide grooves are provided on the surface of the disc, a mounting hole is provided on the surface of the positioning plate, the inner wall of the shell is rotatably connected to a rotating shaft, the top of the rotating shaft is rotatably connected to the bottom of the disc, a worm gear and a driving disc are fixed on the surface of the rotating shaft, a worm is engaged with the surface of the worm gear, two side plates are fixed on the inner wall of the shell, a plurality of arc grooves are provided on the surface of the driving disc, a roller is slidably connected to the inner wall of the arc groove, a movable block is rotatably connected to the surface of the guide groove, a support shell is fixed on the top of the movable block, the positioning plate is slidably connected to the surface of the support shell, and a limiting structure is installed inside the support shell.

[0009] As a preferred generator rotor pole pressure plate processing fixture of the utility model, the internal limiting structure of the support shell includes a bidirectional screw rod, one end of the bidirectional screw rod is rotatably connected to the inner wall of the support shell, one end of the bidirectional screw rod passes through the support shell and is fixed with an operating handle, the surface of the bidirectional screw rod is threaded with two sliders, the surface of the support shell is provided with two sliding grooves, and the slider is slidably connected to the surface of the sliding groove.

[0010] As a preferred fixture for processing the generator rotor pole pressure plate of the utility model, a clamping plate is fixed on the surface of the slider, and clamping grooves are provided on both sides of the surface of the positioning plate.

[0011] As a preferred fixture for processing the generator rotor pole pressure plate of the utility model, a guide rod is fixed to the inner wall of the guide groove, the guide rod passes through the movable block, and the movable block is slidably connected to the surface of the guide rod.

[0012] As a preferred fixture for processing the generator rotor pole pressure plate of the utility model, a plurality of spring pins are embedded and fixed on the inner wall of the guide groove, and positioning holes for matching with the spring pins are opened on the surface of the movable block.

[0013] As a preferred fixture for processing the generator rotor pole pressure plate of the utility model, a support ring is fixed to the inner wall of the shell, a universal ball is fixed to the top of the support ring, and the top of the universal ball is slidably connected to the bottom of the drive disk.

[0014] As a preferred fixture for processing the generator rotor pole pressure plate of the utility model, a plurality of scale lines are provided on the surface of the shell.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In the present invention, the positioning plate can be placed on the surface of the supporting shell and can be fixed by a limiting structure, and the mounting hole is used to bolt the positioning plate and the pole pressure plate. When the positioning plate needs to be adjusted in position according to the size of the pole pressure plate, the hand wheel is turned to rotate the worm, so that the worm can drive the worm wheel and the rotating shaft to rotate at the same time, thereby enabling the driving disk to rotate. When the driving disk rotates, the arc groove on its surface will push multiple rollers to move in opposite directions, realizing the expansion movement of multiple rollers, and then the multiple movable blocks can drive the positioning plates to move together through the supporting shell, so that the positions of the multiple positioning plates can be changed synchronously, thereby making the positioning plate position adjustment more convenient, and the operator does not need to go back and forth to install and fix the positioning plate and the disc with bolts, thereby improving the use efficiency of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the present utility model.

[0022] In the figure: 1. Housing; 2. Disc; 3. Guide groove; 4. Positioning plate; 5. Mounting hole; 6. Rotating shaft; 7. Worm gear; 8. Worm; 9. Side plate; 10. Drive disc; 11. Arc groove; 12. Roller; 13. Movable block; 14. Support shell; 15. Bidirectional screw; 16. Slider; 17. Clamping plate; 18. Clamping groove; 19. Scale line; 20. Spring pin; 21. Positioning hole; 22. Guide rod; 23. Support ring; 24. Universal ball. DETAILED DESCRIPTION

[0023] See also Figure 1-5, a generator rotor pole pressure plate processing fixture, including a shell 1, a disc 2 and a positioning plate 4, the disc 2 is fixed to the top of the shell 1, a plurality of guide grooves 3 are opened on the surface of the disc 2, and a mounting hole 5 is opened on the surface of the positioning plate 4. The inner wall of the shell 1 is rotatably connected with a rotating shaft 6, and the top of the rotating shaft 6 is rotatably connected to the bottom of the disc 2. A worm gear 7 and a driving disk 10 are fixed on the surface of the rotating shaft 6. A worm 8 is meshed with the surface of the worm gear 7. Two side plates 9 are fixed on the inner wall of the shell 1, one end of the worm gear 8 is fixedly connected to the surface of one side side plate 9, the worm gear 8 passes through the other side side plate 9, and one end of the worm gear 8 passes through the shell 1 and is fixed with a handwheel. A plurality of arc grooves 11 are opened on the surface of the driving disk 10, and a roller 12 is slidably connected to the inner wall of the arc groove 11. The top of the roller 12 is rotatably connected to a movable block 13, and the movable block 13 is slidably connected to the surface of the guide groove 3. A supporting shell 14 is fixed to the top of the movable block 13, and the positioning plate 4 is slidably connected to the surface of the supporting shell 14. A limited position structure is installed inside the supporting shell 14;

[0024] The positioning plate 4 can be placed on the surface of the supporting shell 14 and fixed by the limiting structure, and the mounting hole 5 is used to bolt the positioning plate 4 and the pole pressure plate. When the positioning plate 4 needs to be adjusted according to the size of the pole pressure plate, the hand wheel is turned to rotate the worm 8, so that the worm 8 can drive the worm wheel 7 and the rotating shaft 6 to rotate at the same time, thereby enabling the driving disk 10 to rotate. When the driving disk 10 rotates, the arc groove 11 on its surface will push the multiple rollers 12 to move in opposite directions, realizing the expansion movement of the multiple rollers 12, and then the multiple movable blocks 13 can drive the positioning plates 4 to move together through the supporting shell 14, so that the positions of the multiple positioning plates 4 can be changed synchronously, thereby making the position adjustment of the positioning plate 4 more convenient, and the operator does not need to use bolts to install and fix the positioning plate 4 and the disc 2 back and forth, thereby improving the use efficiency of the clamp.

[0025] Furthermore, the internal limiting structure of the support shell 14 includes a bidirectional screw rod 15, one end of which is rotatably connected to the inner wall of the support shell 14, and one end of the bidirectional screw rod 15 passes through the support shell 14 and is fixed with an operating handle. The surface of the bidirectional screw rod 15 is threadedly connected to two sliders 16, and the surface of the support shell 14 is provided with two slide grooves, and the sliders 16 are slidably connected to the surface of the slide grooves;

[0026] The positioning plate 4 can be placed on the surface of the support shell 14, and rotating the operating handle can drive the bidirectional screw 15 to rotate, so that the sliders 16 on both sides can move toward each other under the influence of the threads, so that the sliders 16 on both sides can clamp and fix the positioning plate 4, and through this limiting method, the positioning plate 4 can also be quickly replaced to adapt to magnetic pole pressure plates of different sizes and improve the replacement efficiency of the positioning plate 4.

[0027] Furthermore, a clamping plate 17 is fixed on the surface of the slider 16, and clamping grooves 18 are opened on both sides of the surface of the positioning plate 4;

[0028] After the slider 16 is fitted onto the surface of the positioning plate 4 , the clamping plate 17 can enter the clamping groove 18 , thereby further improving the limiting effect on the positioning plate 4 and preventing the positioning plate 4 from moving up and down.

[0029] Furthermore, a guide rod 22 is fixed to the inner wall of the guide groove 3, and the guide rod 22 passes through the movable block 13, and the movable block 13 is slidably connected to the surface of the guide rod 22;

[0030] The movable block 13 can slide on the surface of the guide rod 22 , so that the movable block 13 can obtain a guiding effect and prevent the movable block 13 from being separated from the guide groove 3 .

[0031] Furthermore, a plurality of spring pins 20 are embedded and fixed on the inner wall of the guide groove 3, and a positioning hole 21 for cooperating with the spring pins 20 is opened on the surface of the movable block 13;

[0032] When the movable block 13 moves inside the guide groove 3, the positioning bead in the spring pin 20 can enter the positioning hole 21, so that the movable block 13 can obtain a certain positioning effect every time it moves a certain distance, making it less likely for the movable block 13 to shake during the processing.

[0033] Furthermore, a support ring 23 is fixed to the inner wall of the housing 1, a universal ball 24 is fixed to the top of the support ring 23, and the top of the universal ball 24 is slidably connected to the bottom of the driving disc 10;

[0034] When the driving disc 10 rotates, the balls on the surface of the universal ball 24 can contact the surface of the driving disc 10, so that the bottom of the driving disc 10 can be supported, thereby improving the stability of the driving disc 10 during rotation.

[0035] Furthermore, a plurality of scale lines 19 are provided on the surface of the housing 1;

[0036] By setting the scale lines 19 , when the positioning plate 4 moves, the operator can observe the scales on the surface of the positioning plate 4 and the scale lines 19 , thereby confirming the moving distance of the positioning plate 4 .

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A generator rotor pole plate machining fixture, comprising a housing (1), a disc (2) and a positioning plate (4), characterized in that: The disc (2) is fixed to the top of the housing (1), a plurality of guide grooves (3) are provided on the surface of the disc (2), a mounting hole (5) is provided on the surface of the positioning plate (4), a rotating shaft (6) is rotatably connected to the inner wall of the housing (1), the top of the rotating shaft (6) is rotatably connected to the bottom of the disc (2), a worm wheel (7) and a driving disc (10) are fixed to the surface of the rotating shaft (6), a worm (8) is meshed with the surface of the worm wheel (7), and two side plates are fixed to the inner wall of the housing (1). (9), a plurality of arc grooves (11) are provided on the surface of the driving disk (10), a roller (12) is slidably connected to the inner wall of the arc groove (11), a movable block (13) is rotatably connected to the top of the roller (12), the movable block (13) is slidably connected to the surface of the guide groove (3), a support shell (14) is fixed to the top of the movable block (13), the positioning plate (4) is slidably connected to the surface of the support shell (14), and a limiting structure is installed inside the support shell (14).

2. The generator rotor pole plate machining fixture according to claim 1, characterized in that: The internal limiting structure of the support shell (14) includes a bidirectional screw rod (15), one end of the bidirectional screw rod (15) is rotatably connected to the inner wall of the support shell (14), one end of the bidirectional screw rod (15) passes through the support shell (14) and is fixed with an operating handle, the surface of the bidirectional screw rod (15) is threadedly connected to two sliders (16), the surface of the support shell (14) is provided with two slide grooves, and the sliders (16) are slidably connected to the surface of the slide grooves.

3. The generator rotor pole plate machining fixture according to claim 2, characterized in that: A clamping plate (17) is fixed on the surface of the slider (16), and clamping grooves (18) are provided on both sides of the surface of the positioning plate (4).

4. The generator rotor pole plate machining fixture according to claim 1, characterized in that: A guide rod (22) is fixed on the inner wall of the guide groove (3), the guide rod (22) passes through the movable block (13), and the movable block (13) is slidably connected to the surface of the guide rod (22).

5. The generator rotor pole plate machining fixture according to claim 1, characterized in that: A plurality of spring pins (20) are embedded and fixed on the inner wall of the guide groove (3), and a positioning hole (21) used in conjunction with the spring pins (20) is opened on the surface of the movable block (13).

6. The generator rotor pole plate machining fixture according to claim 1, characterized in that: A support ring (23) is fixed on the inner wall of the housing (1), a universal ball (24) is fixed on the top of the support ring (23), and the top of the universal ball (24) is slidably connected to the bottom of the driving disc (10).

7. The generator rotor pole plate machining fixture according to claim 1, characterized in that: A plurality of scale lines (19) are provided on the surface of the housing (1).

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