A salient pole generator rotor keying device

Abstract

The present application relates to the field of generator, specifically relates to a salient pole generator rotor skew key tightening device, including support part, support part includes support rod and support column for supporting support rod, support assembly for supporting the rotor shaft of generator, connecting column fixed to one side of support column, first top plate arranged between connecting columns, hydraulic cylinder fixed to the lower surface of first top plate, backing plate fixed to the output shaft of hydraulic cylinder, sleeve plate and lifting part for lifting motion of sleeve plate, the middle part of sleeve plate is provided with sleeve hole penetrating through the upper and lower surfaces thereof, side hole symmetrically arranged on the side wall of sleeve hole, when lifting part drives sleeve plate to move downward to the state that rotor support is located in side hole, side hole is opposite to the magnetic track of rotor support, intermediate block in sliding connection with side hole, and impact hammer for impacting intermediate block, in the present application, the skew key is hit by impact hammer through hydraulic cylinder while being pressurized, so that the skew key tightening tightness requirement can be reached for the slightly larger capacity generator rotor.

Description

Technical Field

[0001] This invention relates to the field of generators, and more particularly to a salient pole generator rotor key tightening device. Background Technology

[0002] Tightening the slant keys of a salient-pole generator rotor typically involves placing the magnetic poles on the yoke (i.e., the rotor support), aligning the dovetail or "T" tail of the magnetic poles within their slots, and then inserting the slant keys into the yoke slots from both ends. A fiberglass cloth is then placed on the outer circumference of the magnetic pole core, and a sledgehammer is used to tap the keys, tightening them as needed. This method is effective for tightening the slant keys of smaller capacity generator rotors. However, it is ineffective for tightening the slant keys of larger capacity generators (e.g., those exceeding 800kW), is extremely laborious, and leaves numerous hammer marks on the outer surface of the magnetic pole core. These marks are unsightly and damage the outer surface of the magnetic poles, degrading the generator's magnetic properties and waveform, and in severe cases, causing the waveform to fail to meet specified requirements.

[0003] In the patent application CN201220075288.5, entitled "A High-Speed ​​Hydropower Generator Magnetic Yoke 'Dovetail' Slot Structure," the magnetic yoke has "dovetail" slots corresponding to the motor. The "dovetail" on the magnetic pole has the same shape as the "dovetail" slot on the magnetic yoke, and the magnetic pole is fastened to the magnetic yoke with a wedge key. The wedge keys are made in pairs, with one end larger than the other. This patent cannot guarantee that the wedge keys will achieve the required tightness after entering the magnetic track slot, thus failing to solve the aforementioned technical problem. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a salient pole generator rotor slant key tightening device to solve the problem that the slant key tightening cannot be achieved for generator rotors with slightly larger capacity by simultaneously tapping the magnetic pole core to tighten the slant key.

[0005] To achieve the above objectives, the present invention provides a salient pole generator rotor key tightening device, comprising at least two support portions;

[0006] The support portion includes:

[0007] Support rod and support column for supporting the support rod;

[0008] A support assembly for supporting the rotor shaft of a generator, the support assembly being disposed on the upper surface of a support rod, and the support assembly including symmetrically arranged rollers, characterized in that the tightening device further includes:

[0009] A connecting column with one end fixed to one side of a support column;

[0010] The first top plate is located between the connecting columns;

[0011] A hydraulic cylinder whose bottom is fixed to the lower surface of the first top plate;

[0012] A liner plate whose upper surface is fixed to the output shaft of the hydraulic cylinder;

[0013] A sleeve plate and a lifting part for the sleeve plate to perform lifting and lowering movements, wherein the sleeve plate has a sleeve hole in the middle that penetrates its upper and lower surfaces, and the sleeve hole is used to fit over the outside of the rotor support and the magnetic pole.

[0014] The side holes symmetrically arranged on the side wall of the sleeve hole are aligned with the magnetic rail of the rotor support when the lifting part drives the sleeve plate to move downward until the rotor support is located in the side hole.

[0015] The intermediate block that is slidably connected to the side hole;

[0016] Impact hammer used to strike the middle block.

[0017] Furthermore, the support portion is provided in two parts, and each support rod is connected to two support columns below it. When the rotor shaft is supported by the support assembly, the rotor shaft is located between the two support columns.

[0018] Furthermore, the connecting columns on both sides of the rotor shaft supported by the support assembly are provided with movable grooves on their opposite sides, and the lifting part includes:

[0019] The movable column is slidably connected to the movable groove, and both ends of the sleeve are located between the two movable columns, and the side surfaces of both ends of the sleeve are fixedly connected to the side surfaces of the movable columns facing the sleeve.

[0020] A lifting assembly used to drive the movable column to move along the movable slot.

[0021] Furthermore, the lifting assembly includes:

[0022] A first motor is provided on the side surface of the connecting column, and the first motor is located below the support assembly;

[0023] The bottom end of the screw is fixed to the output shaft of the first motor. The movable column is provided with a screw hole that passes through its upper and lower end faces. The screw is threadedly connected to the screw hole.

[0024] Furthermore, the tightening device also includes:

[0025] A first shaft is located between two movable columns. The central axis of the first shaft is perpendicular to the central axis of the rotor shaft supported by the support assembly. The end of the first shaft is rotatably connected to a first shaft groove provided on the side surface of the movable column.

[0026] A first rotating rod with its bottom end fixed to the upper surface of the impact hammer has a first shaft hole at its top end. The first rotating rod passes through the first shaft hole and is fixedly connected to the first shaft hole.

[0027] A through groove is provided on the top wall of the side hole, the through groove penetrating the upper surface of the sleeve hole and the side surface of the sleeve hole;

[0028] The drive unit is used to drive the first rotating rod to rotate away from the rotor support, and release the first rotating rod when the impact hammer moves to a preset height. After the drive unit releases the first rotating rod, the first rotating rod passes through the through slot and drives the impact hammer to move into the side hole.

[0029] Furthermore, the drive unit includes:

[0030] A second rotating rod corresponding to the first rotating rod, the top end of the second rotating rod is provided with a second shaft hole;

[0031] A second shaft rod passes through the second shaft hole and is fixedly connected to the second shaft hole. The first top plate is provided with a through groove that penetrates its upper and lower surfaces. The side wall of the through groove is provided with a second shaft groove. The end of the second shaft rod is rotatably connected to the second shaft groove.

[0032] Rotating assembly for driving the second rotating rod to rotate;

[0033] A release assembly for releasing the second rotating rod when the first rotating rod is rotated to a preset position by the top of the second rotating rod.

[0034] Furthermore, the rotating assembly includes:

[0035] A slider that is slidably connected to a first groove located on the side surface of the second rotating rod;

[0036] The second top plate is located above the first top plate;

[0037] A pull rod is hinged to the slider at the bottom. The second top plate has a through hole that penetrates its upper and lower surfaces. The pull rod passes through the through hole. The middle part of the second top plate has an insertion hole that penetrates its upper and lower surfaces. The side wall of the insertion hole has an inner hole that penetrates the through hole.

[0038] An inner plate slidably connected to the inner hole has a through hole extending through its upper surface. The pull rod is slidably connected to the through hole. The side surface of the pull rod has a slot. When one side of the through hole enters the slot, the second top plate drives the pull rod to move.

[0039] A spring with one end fixed to the bottom of the inner hole, and the other end of the spring fixed to the bottom end face of the inner plate;

[0040] A lifting mechanism used to drive the second top plate to move up and down;

[0041] The front end of the inner plate extends into the insertion hole, and the release assembly is used to drive the inner plate to overcome the elastic force of the spring and move into the inner hole.

[0042] Furthermore, the lifting mechanism includes:

[0043] A sliding plate whose top is fixed to the end of the second top plate;

[0044] A side plate and a second motor disposed on one side of the side plate; the sliding plate is slidably connected to a surface groove disposed on the side surface of the side plate.

[0045] An extension rod, one end of which is fixed to the output shaft of the second motor;

[0046] The gear installed on the extension rod matches the rack on the side surface of the skateboard. When the gear meshes with the rack, the second motor will drive the skateboard to move after it is started.

[0047] Furthermore, the release component includes:

[0048] The second cylinder is located at the top of the side plate;

[0049] A push rod is fixed at one end to the output shaft of the second cylinder. The push rod is directly opposite the insertion hole, and the bottom end of the push rod is conical.

[0050] Furthermore, the tightening device also includes:

[0051] A linkage block is provided with linkage holes penetrating both ends of the linkage block. The linkage hole includes a semi-circular arc hole and a transition hole communicating with the semi-circular arc hole. The diameter of the semi-circular arc hole is equal to the diameter of the rotor shaft end.

[0052] The fastening bolt and the pad fixed to the bottom end face of the fastening bolt are provided. The transition hole is provided with a bolt hole that penetrates the side surface of the linkage block on the side wall facing the semi-circular arc hole. The fastening bolt is threaded to the bolt hole. After the linkage hole is inserted into the end of the rotor shaft, the linkage block is fixed to the end of the rotor shaft by the fastening bolt. At this time, the central axis of the rotor shaft coincides with the central axis of the semi-circular arc hole.

[0053] The extension rod passes through a central hole located in the middle of the gear.

[0054] An inner block is provided on the side wall of the middle hole, and the inner block is slidably connected to a second sliding groove provided on the side surface of the extension rod;

[0055] The second cylinder is located on one side of the side plate;

[0056] A rotating block fixed to the output shaft of the cylinder, the rotating block being rotatably connected to an annular groove provided on the end face of the gear;

[0057] Several end blocks are provided on the end face of the gear facing the rotor shaft. The periphery of the semi-circular arc hole is provided with end holes corresponding to the end blocks. The end holes penetrate both end faces of the linkage block.

[0058] The beneficial effects of this invention are as follows: Using the salient-pole generator rotor key tightening device of this invention, firstly, the lifting unit drives the sleeve plate away from the support rod, then the rotor shaft is placed on the support assembly. After completion, by rotating the rotor shaft, one of the magnetic rails is made to face vertically upwards. Then, the dovetail or T-shaped tail of the magnetic pole is installed into the dovetail groove or T-shaped groove of the rotor bracket. After completion, the lifting unit drives the sleeve plate downwards until the rotor bracket is located in the side hole, so that the side hole is aligned with the magnetic rail of the rotor bracket. Then, the key passes through the side hole and enters the dovetail groove or T-shaped groove of the rotor bracket. Next, the intermediate block is placed into the side hole. Then, the hydraulic cylinder drives the support plate to pressurize the outer surface of the magnetic pole. During the pressurization process, the intermediate block is struck by an impact hammer. After being subjected to force, the intermediate block impacts the key. Thus, by applying pressure with the hydraulic cylinder while simultaneously striking the key with the impact hammer, the required tightness of the key tightening can be achieved for generator rotors with slightly larger capacities. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a front view of the rotor shaft and support portion in this invention;

[0061] Figure 2 This is a side sectional view of the present invention;

[0062] Figure 3 This is a partially enlarged view of the upper part of the rotor shaft in this invention;

[0063] Figure 4 This is a front sectional view of the first rotating rod in this invention;

[0064] Figure 5 This is a cross-sectional view of the second top plate in this invention;

[0065] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0066] Figure 7 This is a front sectional view of the linkage block in this invention;

[0067] Figure 8 for Figure 3 Enlarged view of point B in the middle;

[0068] Figure 9 for Figure 3 A magnified view of point C in the middle.

[0069] The diagram is marked as follows:

[0070] 1. Support column; 2. Support rod; 3. Roller; 4. Connecting column; 5. First motor; 6. Side plate; 7. First cylinder; 8. Push rod; 9. Surface groove; 10. Slide plate; 11. Second top plate; 12. Second motor; 13. Second cylinder; 14. Movable column; 15. Screw; 16. First shaft; 17. First rotating rod; 18. Pull rod; 19. Second rotating rod; 20. Second shaft; 21. Through groove; 22. First top plate; 23. Hydraulic cylinder; 24. Liner plate; 25. First slide groove; 26. Perforation; 27. 1. Inner hole; 28. Inner plate; 29. ​​Through hole; 30. Slot; 31. Spring; 32. Insertion hole; 33. Impact hammer; 34. Sleeve plate; 35. Side hole; 36. Intermediate block; 37. Through groove; 38. Sleeve hole; 39. Screw hole; 40. Movable groove; 41. Extension rod; 42. Gear; 43. Second slide groove; 44. Inner block; 45. Circular groove; 46. Rotating block; 47. End block; 48. Linkage block; 49. End hole; 50. Linkage hole; 51. Fastening bolt; 52. Bolt hole; 53. Pad; 54. Slider. Detailed Implementation

[0071] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0072] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0073] In a first aspect, the present invention provides a salient-pole generator rotor key tightening device, such as... Figure 1 , Figure 2 , Figure 3 As shown, it includes at least two support parts;

[0074] The support portion includes:

[0075] Support rod 2 and support column 1 for supporting support rod 2;

[0076] A support assembly for supporting the rotor shaft of a generator, the support assembly being disposed on the upper surface of a support rod 2, and the support assembly including symmetrically arranged rollers 3, characterized in that the tightening device further includes:

[0077] One end of the connecting column 4 is fixed to one side of the support column 1;

[0078] The first top plate 22 is located between the connecting columns 4;

[0079] A hydraulic cylinder 23 is fixed to the lower surface of the first top plate 22 at its bottom;

[0080] A bushing 24 whose upper surface is fixed to the output shaft of the hydraulic cylinder 23;

[0081] The sleeve plate 34 and the lifting part for the sleeve plate 34 to perform lifting and lowering movements, the sleeve plate 34 is provided with a sleeve hole 38 through its upper and lower surfaces in the middle, the sleeve hole 38 is used to fit on the outside of the rotor support and the magnetic pole.

[0082] The side holes 35 are symmetrically arranged on the side wall of the sleeve hole 38. When the lifting part drives the sleeve plate 34 to move downward until the rotor support is located in the side hole 35, the side hole 35 is directly opposite the magnetic rail of the rotor support.

[0083] Intermediate block 36 is slidably connected to side hole 35;

[0084] Impact hammer 33 used to strike the intermediate block 36.

[0085] In this embodiment, firstly, the lifting unit drives the sleeve 34 away from the support rod 2, and then the rotor shaft is placed on the support assembly. After completion, the rotor shaft is rotated so that one of the magnetic rails is vertically upward. Then, the dovetail or T-shaped tail of the magnetic pole is installed into the dovetail groove or T-shaped groove of the rotor bracket. After completion, the lifting unit drives the sleeve 34 downward until the rotor bracket is located in the side hole 35, so that the side hole 35 is directly opposite the magnetic rail of the rotor bracket. Then, the inclined key passes through the side hole 35 and enters the dovetail groove or T-shaped groove of the rotor bracket. Then, the middle block 36 is placed into the side hole 35. Then, the hydraulic cylinder 23 drives the support plate to pressurize the outer surface of the magnetic pole. During the pressurization process, the impact hammer 33 strikes the middle block 36. After the middle block 36 is subjected to force, it strikes the inclined key. Thus, the hydraulic cylinder 23 pressurizes while the impact hammer 33 strikes the inclined key, so that the required tightness of the inclined key can be achieved for generator rotors with slightly larger capacity. Here, the impact force is transmitted through the middle block 36, which reduces the possibility of the diagonal key bending after being subjected to force.

[0086] As one implementation method, such as Figure 1 , Figure 2 As shown, there are two support parts, and two support columns 1 are connected to the bottom of each support rod 2. When the rotor shaft is supported by the support assembly, the rotor shaft is located between the two support columns 1, so that the force on each component is more reasonable after the rotor shaft is placed in the support part.

[0087] As one implementation method, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the connecting columns 4 on both sides of the rotor shaft supported by the support assembly have movable grooves 40 on their opposite sides. The lifting part includes:

[0088] The movable column 14 is slidably connected to the movable groove 40. Both ends of the sleeve 34 are located between the two movable columns 14, and the side surfaces of both ends of the sleeve 34 are fixedly connected to the side surfaces of the movable columns 14 facing the sleeve 34.

[0089] A lifting assembly for driving the movable column 14 to move along the movable slot 40.

[0090] In this embodiment, the movable column 14 is driven to move along the movable groove 40 by the lifting component. Before the rotor shaft is placed on the support, the movable column 14 is moved upward by the lifting component, thereby driving the sleeve plate 34 to move upward. After the sleeve plate 34 moves to a certain height, the rotor shaft and magnetic pole can enter directly below the first top plate 22.

[0091] As one implementation method, such as Figure 2 , Figure 3 , Figure 4 As shown, the lifting assembly includes:

[0092] A first motor 5 is provided on the side surface of the connecting column 4, and the first motor 5 is located below the support assembly;

[0093] The bottom end of the screw 15 is fixed to the output shaft of the first motor 5. The movable column 14 is provided with a screw hole 39 that passes through its upper and lower end faces. The screw 15 is threadedly connected to the screw hole 39.

[0094] Here, the first motor 5 drives the screw 15 to rotate, thereby driving the movable column 14 to move.

[0095] As one implementation method, such as Figure 2 , Figure 3 , Figure 8 As shown, the tightening device further includes:

[0096] A first shaft 16 is located between two movable columns 14. The central axis of the first shaft 16 is perpendicular to the central axis of the rotor shaft supported by the support assembly. The end of the first shaft 16 is rotatably connected to a first shaft groove provided on the side surface of the movable column 14.

[0097] The bottom end face is fixed to the upper surface of the impact hammer 33. The top end of the first rotating rod 17 is provided with a first shaft hole. The first rotating rod 17 passes through the first shaft hole and is fixedly connected to the first shaft hole.

[0098] A through groove 37 is provided on the top wall of the side hole 35, and the through groove 37 penetrates the upper surface of the sleeve hole 38 and the side surface of the sleeve hole 38.

[0099] The drive unit for driving the first rotating rod 17 to rotate away from the rotor support, and releasing the first rotating rod 17 when the impact hammer 33 moves to a preset height, after the drive unit releases the first rotating rod 17, the first rotating rod 17 passes through the through groove 37 and drives the impact hammer 33 to move into the side hole 35.

[0100] In this embodiment, the preset height can be adjusted at any time. When the diagonal key is inserted more tightly, the resistance will be greater. At this time, the impact hammer 33 needs to rise to a higher height. When the drive unit drives the first rotating rod 17 to rotate, so that the impact hammer 33 moves to the preset height, the first rotating rod 17 can be released. Under the action of gravity, the impact hammer 33 will be accelerated during the descent, thereby impacting the middle block 36.

[0101] In this embodiment, as Figure 2 , Figure 3 As shown, the drive unit includes:

[0102] A second rotating rod 19 corresponding to the first rotating rod 17, the top end of the second rotating rod 19 is provided with a second shaft hole;

[0103] A second shaft 20 passes through the second shaft hole and is fixedly connected to the second shaft hole. The first top plate 22 is provided with a through groove 21 that penetrates its upper and lower surfaces. The side wall of the through groove 21 is provided with a second shaft groove. The end of the second shaft 20 is rotatably connected to the second shaft groove.

[0104] Rotating assembly for driving the second rotating rod 19 to rotate;

[0105] A release assembly for releasing the second rotating rod 19 when the first rotating rod 17 is rotated to a preset position by the top of the second rotating rod 19.

[0106] In this embodiment, when the rotating assembly drives the second rotating rod 19 to rotate outward, the bottom of the second rotating rod 19 will drive the first rotating rod 17 to rotate outward during the rotation process. After the first rotating rod 17 rotates to a certain height, the release assembly releases the second rotating rod 19, causing the second rotating rod 19 to separate from the rotating assembly. At this time, the second rotating rod 19 will immediately move downward under the action of gravity, so that the first rotating rod 17 will also move downward under the action of gravity, thereby allowing the impact hammer 33 to strike the middle block 36.

[0107] As one implementation method, such as Figure 2 , Figure 3 , Figure 5 , Figure 9 As shown, the rotating assembly includes:

[0108] A slider 54 that is slidably connected to a first groove 25 located on the side surface of the second rotating rod 19;

[0109] The second top plate 11 is located above the first top plate 22;

[0110] The bottom end of the pull rod 18 is hinged to the slider 54. The second top plate 11 is provided with a through hole 26 that penetrates its upper and lower surfaces. The pull rod 18 passes through the through hole 26. The middle part of the second top plate 11 is provided with an insertion hole 32 that penetrates its upper and lower surfaces. The side wall of the insertion hole 32 is provided with an inner hole 27 that penetrates the through hole 26.

[0111] The inner plate 28 is slidably connected to the inner hole 27. The inner plate 28 is provided with a through hole 29 penetrating its upper surface. The pull rod 18 is slidably connected to the through hole 29. The side surface of the pull rod 18 is provided with a groove 30. When one side of the through hole 29 enters the groove 30, the second top plate 11 drives the pull rod 18 to move.

[0112] A spring 31 with one end fixed to the bottom end of the inner hole 27, and the other end of the spring 31 fixed to the bottom end face of the inner plate 28;

[0113] A lifting mechanism for driving the second top plate 11 to move up and down;

[0114] The front end of the inner plate 28 extends into the insertion hole 32, and the release assembly is used to drive the inner plate 28 to overcome the elastic force of the spring 31 and move into the inner hole 27.

[0115] In this embodiment, when the second rotating rod 19 is in its natural state, i.e., not driven by the lifting mechanism, one side of the through hole 29 is stably located in the slot 30 under the elastic force of the spring 31. When the driving mechanism drives the second top plate 11 to move upward, it will drive the pull rod 18 to move upward, which will inevitably drive the second rotating rod 19 to rotate, so that the bottom of the second rotating rod 19 contacts the side surface of the first rotating rod 17, driving the first rotating rod 17 to rotate. When the first rotating rod 17 drives the impact hammer 33 to move to the preset height, the release component drives the inner plate 28 to overcome the elastic force of the spring 31 and move inward. When the through hole 29 moves inside the slot 30, the second rotating rod 19 and the pull rod 18 will move downward under the action of gravity, so that the impact hammer 33 will fall and hit the middle block 36. During the falling of the impact hammer 33, the lifting mechanism drives the second top plate 11 to move downward. At this time, under the action of the spring 31, the side wall of the through hole 29 will abut against the side surface of the pull rod 18. When the pull rod 18 moves to the point where the side wall of the through hole 29 is directly opposite the slot 30, the spring 31 will cause one side of the through hole 29 to move back into the slot 30, and then the next impact can be carried out.

[0116] As one implementation method, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the lifting mechanism includes:

[0117] The top of the sliding plate 10 is fixed to the end of the second top plate 11;

[0118] Side plate 6 and a second motor 12 disposed on one side of side plate 6; the slide plate 10 is slidably connected to the surface groove 9 disposed on the side surface of side plate 6.

[0119] An extension rod 41, one end of which is fixed to the output shaft of the second motor 12;

[0120] The gear 42 installed on the extension rod 41 matches the rack provided on the side surface of the slide plate 10. When the gear 42 meshes with the rack, the second motor 12 will drive the slide plate 10 to move.

[0121] In this embodiment, when it is necessary to drive the second top plate 11 to move, the gear 42 meshes with the rack and pinion, so that after the second motor 12 is started, it can drive the second top plate 11 to move.

[0122] As one implementation method, such as Figure 2 As shown, the release component includes:

[0123] The second cylinder 13 is located at the top of the side plate 6;

[0124] A push rod 8 is fixed at one end to the output shaft of the second cylinder 13. The push rod 8 is directly opposite the insertion hole 32, and the bottom end of the push rod 8 is conical.

[0125] In this embodiment, the position of the push rod 8 is adjusted by the second cylinder 13. When the position of the push rod 8 is higher, the height of the impact hammer 33 will be higher before the push rod 8 enters the insertion hole 32. After the push rod 8 enters the insertion hole 32, the inner plate 28 will contact the cone at the end of the insertion hole 32. As the push rod 8 enters the insertion hole 32 deeper, the push rod 8 will push the inner plate 28 into the inner hole 27, and finally cause one side of the through hole 29 to separate from the slot 30.

[0126] As one implementation method, such as Figure 2 , Figure 6 , Figure 7 As shown, the tightening device further includes:

[0127] Linkage block 48, wherein the linkage block 48 is provided with linkage holes 50 penetrating its two end faces, the linkage hole 50 includes a semi-circular arc hole and a transition hole communicating with the semi-circular arc hole, the diameter of the semi-circular arc hole is equal to the diameter of the rotor shaft end;

[0128] The fastening bolt 51 and the pad 53 fixed to the bottom end face of the fastening bolt 51 are provided. The side wall of the transition hole facing the semi-circular arc hole is provided with a bolt hole 52 that penetrates the side surface of the linkage block 48. The fastening bolt 51 is threadedly connected to the bolt hole 52. After the linkage hole 50 is inserted into the end of the rotor shaft, the linkage block 48 is fixed to the end of the rotor shaft by the fastening bolt 51. At this time, the central axis of the rotor shaft coincides with the central axis of the semi-circular arc hole.

[0129] The extension rod 41 passes through a central hole located in the middle of the gear 42.

[0130] An inner block 44 is provided on the side wall of the middle hole, and the inner block 44 is slidably connected to a second sliding groove 43 provided on the side surface of the extension rod 41.

[0131] The second cylinder 13 is located on one side of the side plate 6;

[0132] A rotating block 46 is fixed to the output shaft of the cylinder, and the rotating block 46 is rotatably connected to the annular groove 45 provided on the end face of the gear 42;

[0133] A plurality of end blocks 47 are provided on the end face of the gear 42 facing the rotor shaft. The periphery of the semi-circular arc hole is provided with end holes 49 corresponding to the end blocks 47. The end holes 49 penetrate both end faces of the linkage block 48.

[0134] In this embodiment, after the rotor shaft is supported by the support part, the end of the rotor shaft is inserted into the linkage hole 50. The linkage block 48 is fixed to the end of the rotor shaft by the fastening bolt 51. At this time, the central axis of the rotor shaft coincides with the central axis of the semi-circular arc hole. When it is necessary to rotate the rotor shaft so that the magnetic track moves to the top, the second cylinder 13 pushes the gear 42 to move towards the linkage block 48, so that the end block 47 enters into the end hole 49. At this time, the gear 42 separates from the rack. After the second motor 12 starts, it will drive the rotor shaft to rotate. When it is necessary to drive the second top plate 11 to move, the second cylinder 13 drives the gear 42 to move towards the second motor 12, so that the end block 47 separates from the end hole 49 and the gear 42 meshes with the rack.

[0135] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0136] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A salient-pole generator rotor key tightening device, comprising at least two support parts; The support portion includes: Support rod (2) and support column (1) for supporting the support rod (2); A support assembly for supporting the rotor shaft of a generator, the support assembly being disposed on the upper surface of a support rod (2), and the support assembly including symmetrically arranged rollers (3), characterized in that the tightening device further includes: A connecting column (4) with one end fixed to one side of the support column (1); The first top plate (22) is located between the connecting columns (4); A hydraulic cylinder (23) is fixed to the lower surface of the first top plate (22); A bushing (24) whose upper surface is fixed to the output shaft of the hydraulic cylinder (23); The sleeve plate (34) and the lifting part for the sleeve plate (34) to perform lifting and lowering movements, wherein the middle part of the sleeve plate (34) is provided with a sleeve hole (38) that penetrates its upper and lower surfaces, and the sleeve hole (38) is used to fit on the outside of the rotor support and the magnetic pole. The side holes (35) symmetrically arranged on the side wall of the sleeve hole (38) are aligned with the magnetic rail of the rotor support when the lifting part drives the sleeve plate (34) to move downward until the rotor support is located in the side hole (35). An intermediate block (36) that is slidably connected to the side hole (35); Impact hammer (33) used to strike the intermediate block (36).

2. The salient pole generator rotor key tightening device according to claim 1, characterized in that, The support is provided in two parts, and each support rod (2) is connected to two support columns (1) below it. When the rotor shaft is supported by the support assembly, the rotor shaft is located between the two support columns (1).

3. The salient pole generator rotor key tightening device according to claim 2, characterized in that, The connecting columns (4) on both sides of the rotor shaft supported by the support assembly are provided with movable grooves (40) on opposite sides. The lifting part includes: The movable column (14) is slidably connected to the movable groove (40), and both ends of the sleeve plate (34) are located between the two movable columns (14), and the side surfaces of both ends of the sleeve plate (34) are fixedly connected to the side surfaces of the movable column (14) facing the sleeve plate (34). A lifting assembly for driving the movable column (14) to move along the movable groove (40).

4. The salient pole generator rotor key tightening device according to claim 3, characterized in that, The lifting assembly includes: A first motor (5) is provided on the side surface of the connecting column (4), and the first motor (5) is located below the support assembly; The bottom end of the screw (15) is fixed to the output shaft of the first motor (5). The movable column (14) is provided with a screw hole (39) that passes through its upper and lower end faces. The screw (15) is threadedly connected to the screw hole (39).

5. The salient pole generator rotor key tightening device according to claim 4, characterized in that, The tightening device further includes: A first shaft (16) is located between two movable columns (14), the central axis of the first shaft (16) is perpendicular to the central axis of the rotor shaft supported by the support assembly, and the end of the first shaft (16) is rotatably connected to a first shaft groove provided on the side surface of the movable column (14). The bottom end face is fixed to the upper surface of the impact hammer (33) and the first rotating rod (17) is provided with a first shaft hole at the top end. The first rotating rod (17) passes through the first shaft hole and is fixedly connected to the first shaft hole. A through groove (37) is provided on the top wall of the side hole (35), the through groove (37) penetrates the upper surface of the sleeve hole (38) and the side surface of the sleeve hole (38); The drive unit for driving the first rotating rod (17) to rotate away from the rotor support and releasing the first rotating rod (17) when the impact hammer (33) moves to a preset height. After the drive unit releases the first rotating rod (17), the first rotating rod (17) passes through the through slot (37) and drives the impact hammer (33) to move into the side hole (35).

6. The salient pole generator rotor key tightening device according to claim 5, characterized in that, The drive unit includes: A second rotating rod (19) corresponding to the first rotating rod (17) has a second shaft hole at its top end; A second shaft (20) passes through the second shaft hole and is fixedly connected to the second shaft hole. The first top plate (22) is provided with a through groove (21) that penetrates its upper and lower surfaces. The side wall of the through groove (21) is provided with a second shaft groove. The end of the second shaft (20) is rotatably connected to the second shaft groove. Rotating assembly for driving the second rotating rod (19) to rotate; Release assembly for releasing the second rotating rod (19) when the first rotating rod (17) is rotated to a preset position by the top of the second rotating rod (19).

7. A salient-pole generator rotor key tightening device according to claim 6, characterized in that, The rotating assembly includes: A slider (54) is slidably connected to a first groove (25) located on the side surface of the second rotating rod (19); The second top plate (11) is located above the first top plate (22); A pull rod (18) is hinged to the bottom of the slider (54). The second top plate (11) is provided with a through hole (26) that penetrates its upper and lower surfaces. The pull rod (18) passes through the through hole (26). The middle part of the second top plate (11) is provided with an insertion hole (32) that penetrates its upper and lower surfaces. The side wall of the insertion hole (32) is provided with an inner hole (27) that penetrates the through hole (26). An inner plate (28) is slidably connected to the inner hole (27). The inner plate (28) has a through hole (29) penetrating its upper surface. The pull rod (18) is slidably connected to the through hole (29). The side surface of the pull rod (18) is provided with a slot (30). When one side of the through hole (29) enters the slot (30), the second top plate (11) drives the pull rod (18) to move. A spring (31) with one end fixed to the bottom end of the inner hole (27) and the other end of the spring (31) fixed to the bottom end face of the inner plate (28); A lifting mechanism for driving the second top plate (11) to move up and down; The front end of the inner plate (28) extends into the insertion hole (32), and the release assembly is used to drive the inner plate (28) to overcome the elastic force of the spring (31) and move into the inner hole (27).

8. The salient pole generator rotor key tightening device according to claim 7, characterized in that, The lifting mechanism includes: The top of the slide plate (10) is fixed to the end of the second top plate (11); The side plate (6) and the second motor (12) provided on one side of the side plate (6) are slidably connected to the slide plate (10) and the surface groove (9) provided on the side surface of the side plate (6); An extension rod (41) with one end fixed to the output shaft of the second motor (12); The gear (42) installed on the extension rod (41) matches the rack on the side surface of the slide plate (10). When the gear (42) meshes with the rack, the second motor (12) will drive the slide plate (10) to move.

9. A salient-pole generator rotor key tightening device according to claim 8, characterized in that, The release component includes: The first cylinder (7) is located at the top of the side plate (6); A push rod (8) with one end fixed to the output shaft of the first cylinder (7) is positioned opposite the insertion hole (32), and the bottom end of the push rod (8) is conical.

10. A salient-pole generator rotor key tightening device according to claim 9, characterized in that, The tightening device further includes: Linkage block (48), the linkage block (48) is provided with linkage holes (50) penetrating its two end faces, the linkage hole (50) includes a semi-circular arc hole and a transition hole communicating with the semi-circular arc hole, the diameter of the semi-circular arc hole is equal to the diameter of the rotor shaft end; The fastening bolt (51) and the pad (53) fixed to the bottom end face of the fastening bolt (51) are provided. The transition hole is provided with a bolt hole (52) that penetrates the side surface of the linkage block (48) on the side wall facing the semi-circular arc hole. The fastening bolt (51) is threadedly connected to the bolt hole (52). After the linkage hole (50) is inserted into the end of the rotor shaft, the linkage block (48) is fixed to the end of the rotor shaft by the fastening bolt (51). At this time, the central axis of the rotor shaft coincides with the central axis of the semi-circular arc hole. A central hole is provided in the middle of the gear (42), through which the extension rod (41) passes; An inner block (44) is provided on the side wall of the middle hole, and the inner block (44) is slidably connected to a second sliding groove (43) provided on the side surface of the extension rod (41); A second cylinder (13) is located on one side of the side plate (6); A rotating block (46) is fixed to the output shaft of the second cylinder (13), and the rotating block (46) is rotatably connected to the annular groove (45) provided on the end face of the gear (42); A plurality of end blocks (47) are provided on the end face of the gear (42) facing the rotor shaft. The periphery of the semi-circular arc hole is provided with end holes (49) corresponding to the end blocks (47). The end holes (49) penetrate both ends of the linkage block (48).

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