Driving equipment for turning over doubly-fed generator rotor

Abstract

The invention discloses a driving device for turning over a doubly-fed generator rotor, and relates to the technical field of wind driven generator manufacturing. The rotor turning-over device comprises a rotor turning-over support, a rotor support and a stable lifting driving mechanism, through the arrangement of the stable lifting driving mechanism, when a rotor body needs to be turned over, the non-driven end of the rotor body can be clamped through cooperation of an upper fixing ring and a lower fixing ring, then a motor B is started to drive a rotating shaft to rotate, and the rotor body is turned over. The rotating shaft rotates to drive the winding roller to synchronously rotate to wind the steel rope, so that the non-driven end of the rotor body ascends, and the hydraulic bin, the gear, the toothed bar and other assemblies are matched to drive the winding roller to rotate and move at the same time, so that the steel rope is wound on the winding roller more uniformly, and the overall winding stability is improved; and then, a motor A is started to drive a threaded rod to rotate, so that a movable seat can move, and thus turning-over work is carried out in a matched mode.

Description

Technical Field

[0001] The invention relates to the technical field of wind generator manufacturing, in particular to a driving device for turning over a doubly-fed generator rotor. Background Art

[0002] Doubly-fed wind turbine generator is a wound induction generator, which is the core component of variable speed constant frequency wind turbine generator set and one of the key components of wind turbine generator set localization. The generator is mainly composed of two parts: the motor body and the cooling system. The motor body is composed of stator, rotor and bearing system. The cooling system is divided into three structures: water cooling, air-to-air cooling and air-to-water cooling. As the power generation of doubly-fed asynchronous generators increases, the volume, weight and length of the rotors are also increasing. At present, the rotors are lifted using large and small hooks of a crane, and the lifting ropes are used to lift them to the neutral positions on the rotor drive end and non-drive end shafts respectively. This lifting method is not stable enough and has great safety hazards. During the rotor turning over process, it is easy to shake under the action of gravity and inertia, which may cause accidents. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a driving device for turning over the rotor of a doubly-fed generator, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a driving device for turning over the rotor of a doubly fed generator, comprising a rotor turning bracket, a rotor bracket and a stable lifting drive mechanism, wherein the top of the rotor turning bracket is fixedly connected with a support, the top of the rotor bracket is provided with a rotor body, and the surface of the rotor body is provided with a connecting pin; the stable lifting drive mechanism comprises a mounting frame, a movable seat and a winding roller, the top of the mounting frame is provided with a long groove, the movable seat is slidably connected to the long groove, the inner bottom of the movable seat is fixedly connected with a threaded sleeve, the top of the mounting frame is provided with a motor A, the output shaft of the motor A is fixedly connected with a threaded rod, and the movable seat A motor B is provided on the front side, a rotating shaft is rotatably connected to the inner side of the movable seat, a steel rope is wound around the surface of the winding roller, a hydraulic warehouse is penetrated through and fixedly connected to the side of the movable seat, a piston rod A is slidably connected to the internal piston at one end of the hydraulic warehouse, a gear rod is fixedly connected to the top of the piston rod A, a piston rod B is slidably connected to the internal piston at the other end of the hydraulic warehouse, a round block is fixedly connected to the end of the piston rod B away from the hydraulic warehouse, an open ring groove is provided on the side of the movable seat, a rotating rod is fixedly connected to the side of the rotating shaft, a gear is fixedly connected to the end of the rotating rod away from the rotating shaft, a lubrication mechanism is provided on the top of the piston rod B, and a cleaning mechanism is provided on the inner side of the mounting frame.

[0005] According to the above technical solution, the rotor body is rotatably connected to the support through a connecting pin, an anti-loosening bolt is arranged on the surface of the connecting pin, a chute is formed on the inner side wall of the winding roller, a slider is fixedly connected to the surface of the rotating shaft, and the slider is slidably connected inside the chute. When the non-driven end of the rotor body is lifted, the driven end of the rotor body will be restricted by the connecting pin to rotate on the support, and the anti-loosening bolt can prevent the connecting pin from falling off the support. When the rotating shaft rotates, the winding roller will be driven to rotate synchronously through the cooperation of the slider and the chute, and the winding roller can slide on the surface of the rotating shaft.

[0006] According to the above technical solution, a hook A is rotatably connected to one end of the steel rope away from the winding roller, a suspension seat is suspended at the bottom of the hook A, a hook B is fixedly connected to the bottom of the suspension seat, an upper fixing ring is suspended at the bottom of the hook B, and a lower fixing ring is bolted to the bottom of the upper fixing ring. The non-driven end of the rotor body is clamped by the cooperation of the upper fixing ring and the lower fixing ring. When the steel rope rises, the non-driven end of the rotor body will be driven to rise through the cooperation of the hook A and the hook B.

[0007] According to the above technical solution, the threaded sleeve is threadedly connected to the threaded rod, the output shaft of the motor B is fixedly connected to the rotating shaft. When the threaded rod rotates, the moving seat will be driven to move along the long groove through the threaded cooperation with the threaded sleeve. Starting the motor B will drive the rotating shaft to rotate.

[0008] According to the above technical solution, the teeth on the tooth bar are meshed with the teeth on the gear, the round block is slidably connected inside the opening ring groove, and an oil outlet assembly is arranged on the surface of the round block. When the gear rotates, it will drive the tooth bar to move up or down. When the piston rod B moves left or right, the winding roller will be driven to move through the cooperation of the round block and the opening ring groove.

[0009] According to the above technical solution, the lubrication mechanism includes a lubricating oil box, a fueling pipe penetrates and is fixedly connected to the back side of the lubricating oil box, an oil delivery pipe penetrates and is fixedly connected to the bottom of the lubricating oil box. The oil outlet assembly includes an oil storage chamber, the oil storage chamber is arranged inside the round block, a support rod is fixedly connected inside the oil storage chamber, a roller is rotatably connected to the surface of the support rod, and an oil-carrying pit is formed on the surface of the roller.

[0010] According to the above technical solution, one end of the oil delivery pipe away from the lubricating oil box penetrates and is fixedly connected to the oil storage chamber. The surface of the roller is in contact with the inner wall of the opening ring groove in the initial state. The lubricating oil in the lubricating oil box can enter the oil storage chamber through the oil delivery pipe. When the friction between the roller and the opening ring groove is large, the roller will rotate.

[0011] According to the above technical solution, the cleaning mechanism includes an eccentric extrusion ring and a pneumatic chamber, the eccentric extrusion ring is fixedly connected to the surface of the rotating shaft, the pneumatic chamber is fixedly connected to the inner wall of the movable seat, an airbag is provided at one end of the pneumatic chamber, and the internal piston at the other end of the pneumatic chamber is slidably connected to a piston rod C, and the end of the piston rod C away from the pneumatic chamber is fixedly connected to a cleaning brush.

[0012] According to the above technical solution, the airbag is in an expanded state in the initial state, and the end of the airbag away from the air pressure chamber is close to the rotating shaft. When the rotating shaft rotates, it will drive the eccentric extrusion ring to repeatedly squeeze the airbag.

[0013] According to the above technical solution, the end of the cleaning brush away from the piston rod C is close to the threaded rod, and the bristles of the cleaning brush are in contact with the threaded rod. When the cleaning brush moves, its bristles will clean the surface of the threaded rod.

[0014] The present invention provides a driving device for turning over the rotor of a doubly-fed generator. It has the following beneficial effects: (1) The present invention provides a stable lifting drive mechanism so that when the rotor body needs to be turned over, the upper fixing ring and the lower fixing ring can be used to clamp the non-driven end of the rotor body, and then the motor B is turned on to drive the shaft to rotate. The rotation of the shaft will drive the winding roller to rotate synchronously to wind up the steel rope, so that the non-driven end of the rotor body rises, and the hydraulic bin, gears, gear rods and other components will drive the winding roller to rotate and move at the same time, so that the steel rope can be wound on the winding roller more evenly, improving the stability of the overall winding and preventing the steel ropes from being entangled and shaking. Then, the motor A is turned on to drive the threaded rod to rotate so that the moving seat can move, so as to cooperate with the turning operation.

[0015] (2) The present invention provides a lubricating mechanism so that during the movement of the piston rod B and the movement of the winding roller through the cooperation between the round block and the open ring groove, when the friction between the open ring groove and the round block is large, the lubricating oil box, the oil delivery pipe and the structure inside the oil outlet assembly will cooperate to allow the lubricating oil to enter the open ring groove for lubrication, thereby reducing the friction between the open ring groove and the round block, slowing down the aging of the entire mechanism and not easily causing waste of lubricating oil.

[0016] (3) The present invention sets a cleaning mechanism so that when the motor B is turned on, the rotating shaft is driven to rotate, and the rotation of the rotating shaft drives the winding roller to rotate synchronously to wind up the steel rope. When the motor A is turned on to drive the threaded rod to rotate, the movable seat is moved. In the process, the cleaning brush is driven to move repeatedly to clean the surface of the rotating threaded rod through the cooperation of the eccentric extrusion ring, the air bag, the air pressure chamber and other components, so as to prevent the surface of the threaded rod from being attached to foreign matter and affecting the stability of the operation of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of a partial structure of the present invention; Figure 3 It is a three-dimensional sectional view of the structure at the rotor turning-over bracket of the present invention; Figure 4 It is a three-dimensional schematic diagram of the overall structure of the stable lifting drive mechanism of the present invention; Figure 5 It is a three-dimensional schematic diagram of a partial structure of the stable lifting drive mechanism of the present invention; Figure 6 It is a three-dimensional sectional view of a partial structure of the stable lifting drive mechanism of the present invention; Figure 7 It is a three-dimensional sectional view of the structure at the lubrication mechanism and the oil outlet assembly of the present invention; Figure 8 It is a three-dimensional schematic diagram of the structure of the cleaning mechanism of the present invention.

[0018] In the figure: 1, rotor turning-over bracket; 2, support; 3, rotor bracket; 4, rotor main body; 5, connecting pin; 6, anti-loosening bolt; 7, stable lifting drive mechanism; 71, mounting frame; 72, long slot; 73, moving seat; 74, threaded sleeve; 75, motor A; 76, threaded rod; 77, rotating shaft; 78, motor B; 79, winding roller; 710, steel rope; 711, hook A; 712, hanging seat; 713, hook B; 714, upper fixing ring; 715, lower fixing ring; 716, chute; 717, slider; 718, hydraulic chamber; 719, piston rod A; 720, toothed rod; 721, piston rod B; 722, round block; 723, open ring groove; 724, rotating rod; 725, gear; 8, lubrication mechanism; 81, lubricating oil box; 82, fueling pipe; 83, oil delivery pipe; 84, oil outlet assembly; 841, oil storage chamber; 842, support rod; 843, roller; 844, oil pit; 9, cleaning mechanism; 91, eccentric extrusion ring; 92, air pressure chamber; 93, airbag; 94, piston rod C; 95, cleaning brush. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Please refer to Figure 1-8, an embodiment of the present invention is: a driving device for turning over the rotor of a doubly-fed generator, including a rotor turning-over bracket 1, a rotor bracket 3 and a stable lifting driving mechanism 7. A support 2 is fixedly connected to the top of the rotor turning-over bracket 1. A rotor main body 4 is arranged on the top of the rotor bracket 3. A connecting pin 5 is arranged on the surface of the rotor main body 4; the stable lifting driving mechanism 7 includes a mounting frame 71, a moving seat 73 and a winding roller 79. A long groove 72 is opened at the top of the mounting frame 71. The moving seat 73 is slidably connected to the long groove 72. A threaded sleeve 74 is fixedly connected to the inner bottom of the moving seat 73. A motor A 75 is arranged on the top of the mounting frame 71. The output shaft of the motor A 75 is fixedly connected with a threaded rod 76. A motor B 78 is arranged on the front side of the moving seat 73. A rotating shaft 77 is rotatably connected to the inside of the moving seat 73. The threaded sleeve 74 is threadedly connected with the threaded rod 76. The output shaft of the motor B 78 is fixedly connected with the rotating shaft 77. When the threaded rod 76 rotates, it will drive the moving seat 73 to move along the long groove 72 through the thread cooperation with the threaded sleeve 74. Starting the motor B 78 will drive the rotating shaft 77 to rotate. A steel rope 710 is wound around the surface of the winding roller 79. The rotor main body 4 is rotatably connected to the support 2 through the connecting pin 5. An anti-loosening bolt 6 is arranged on the surface of the connecting pin 5. A sliding groove 716 is opened on the inner side wall of the winding roller 79. A sliding block 717 is fixedly connected to the surface of the rotating shaft 77. The sliding block 717 is slidably connected inside the sliding groove 716. When the non-driving end of the rotor main body 4 is lifted, the driving end of the rotor main body 4 will be restricted by the connecting pin 5 to rotate on the support 2. The anti-loosening bolt 6 can prevent the connecting pin 5 from falling off the support 2. When the rotating shaft 77 rotates, it will drive the winding roller 79 to rotate synchronously through the cooperation of the sliding block 717 and the sliding groove 716, and the winding roller 79 can slide on the surface of the rotating shaft 77. One end of the steel rope 710 far away from the winding roller 79 is rotatably connected with a hook A 711. A suspension seat 712 is suspended at the bottom of the hook A 711. A hook B 713 is fixedly connected to the bottom of the suspension seat 712. A hook B 713 is suspended at the bottom of the upper fixing ring 714. The bottom of the upper fixing ring 714 is bolted to the lower fixing ring 715. The non-driving end of the rotor main body 4 is clamped through the cooperation of the upper fixing ring 714 and the lower fixing ring 715. When the steel rope 710 rises, it will drive the non-driving end of the rotor main body 4 to rise through the cooperation of the hook A 711 and the hook B 713. A hydraulic chamber 718 penetrates and is fixedly connected to the side of the moving seat 73. A piston rod A 719 is slidably connected to the inner piston of one end of the hydraulic chamber 718. The top of the piston rod A 719 is fixedly connected with a toothed rod 720. A piston rod B 721 is slidably connected to the inner piston of the other end of the hydraulic chamber 718. One end of the piston rod B 721 far away from the hydraulic chamber 718 is fixedly connected with a round block 722. An opening ring groove 723 is opened on the side of the moving seat 73. A rotating rod 724 is fixedly connected to the side of the rotating shaft 77. A gear 725 is fixedly connected to one end of the rotating rod 724 far away from the rotating shaft 77. The teeth on the toothed rod 720 are meshed with the teeth on the gear 725. The round block 722 is slidably connected inside the opening ring groove 723.The surface of the round block 722 is provided with an oil outlet assembly 84. When the gear 725 rotates, it drives the gear rod 720 to move upward or downward. When the piston rod B721 moves left or right, it drives the winding roller 79 to move through the cooperation between the round block 722 and the open ring groove 723. The top of the piston rod B721 is provided with a lubrication mechanism 8, and the inner side of the mounting frame 71 is provided with a cleaning mechanism 9.

[0021] When in use, fix the rotor turning bracket 1 with reinforced embedded anchor bolts and nuts, and then strengthen the fixation with high-strength non-shrinkage grouting material, rotate and connect the driven end of the rotor body 4 with the top support 2 of the rotor turning bracket 1 through the connecting pin 5, insert the anti-drop bolt 6 into the radial through hole at the entrance end of the connecting pin 5 to prevent the connecting pin 5 from falling off under the state of unbalanced force, support the rotor body 4 through two sets of rotor brackets 3, and then clamp the non-driven end of the rotor body 4 through the upper fixing ring 714 and the lower fixing ring 715 with bolts, and hang the upper fixing ring 714 through two sets of hooks B713, and then start the motor B78 to drive the rotating shaft 77 to rotate. The rotation of the rotating shaft 77 will drive the winding roller 79 to rotate synchronously through the cooperation of the slider 717 and the slide groove 716, and the rotation of the rotating shaft 77 will also drive the rotating rod 724 to rotate, and the rotation of the rotating rod 724 drives the gear 725 to rotate, and the rotation of the gear 725 drives the gear rod 720 and the piston rod A719 to move upward or downward. When the piston rod A719 moves upward or downward, the hydraulic pressure in the hydraulic chamber 718 will drive the piston rod B721 to move toward the rear end or the front end. The movement of the piston rod B721 toward the rear end or the front end will drive the rotating winding roller 79 to move through the cooperation of the round block 722 and the open ring groove 723, so that the winding roller 79 will also move linearly when it rotates to reel or unreel, so that the steel rope 710 can be more evenly reeled on the winding roller 79, thereby improving the stability of the overall reeling and preventing the steel rope 710 from being entangled and shaking. In the process of lifting the non-driven end of the rotor body 4, the motor A75 is turned on to drive the threaded rod 76 to rotate. When the threaded rod 76 rotates, it will drive the moving seat 73 to move along the long groove 72 through the cooperation between the thread and the threaded sleeve 74. In this process, the rotor turning bracket 1 cooperates with the support 2, the connecting pin 5 and other components to make the driven end of the rotor body 4 rotate stably, and the overall turning work is more stable, reducing the possibility of accidents.

[0022] See also Figure 1-8, on the basis of the above embodiments, in another embodiment of the present invention, the lubrication mechanism 8 includes a lubricating oil box 81. A fuel filling pipe 82 penetrates and is fixedly connected to the back side of the lubricating oil box 81. An oil delivery pipe 83 penetrates and is fixedly connected to the bottom of the lubricating oil box 81. The oil outlet assembly 84 includes an oil storage chamber 841. The oil storage chamber 841 is opened inside the round block 722. A support rod 842 is fixedly connected inside the oil storage chamber 841. A roller 843 is rotatably connected to the surface of the support rod 842. An oil-carrying pit 844 is opened on the surface of the roller 843. One end of the oil delivery pipe 83 away from the lubricating oil box 81 penetrates and is fixedly connected to the oil storage chamber 841. The surface of the roller 843 is initially in contact with the inner wall of the open ring groove 723. The lubricating oil in the lubricating oil box 81 can enter the oil storage chamber 841 through the oil delivery pipe 83. When the friction between the roller 843 and the open ring groove 723 is large, the roller 843 will rotate. The cleaning mechanism 9 includes an eccentric extrusion ring 91 and a pneumatic chamber 92. The eccentric extrusion ring 91 is fixedly connected to the surface of the rotating shaft 77. The pneumatic chamber 92 is fixedly connected to the inner side wall of the moving seat 73. An airbag 93 is arranged at one end of the pneumatic chamber 92. A piston rod C94 is slidably connected to the other end of the pneumatic chamber 92. One end of the piston rod C94 away from the pneumatic chamber 92 is fixedly connected to a cleaning brush 95. The airbag 93 is initially in an inflated state, and the end of the airbag 93 away from the pneumatic chamber 92 is close to the rotating shaft 77. When the rotating shaft 77 rotates, it will drive the eccentric extrusion ring 91 to repeatedly squeeze the airbag 93. One end of the cleaning brush 95 away from the piston rod C94 is close to the threaded rod 76, and the bristles of the cleaning brush 95 are in contact with the threaded rod 76. When the cleaning brush 95 moves, its bristles will clean the surface of the threaded rod 76.

[0023] During use, as the piston rod B721 moves backward or forward and drives the rotating winding roller 79 to move through the cooperation between the round block 722 and the open ring groove 723, friction is generated between the round block 722, the roller 843 and the inner wall of the open ring groove 723. When the friction between the roller 843 and the open ring groove 723 is relatively large, the roller 843 will rotate. The rotation of the roller 843 will cooperate with the oil pits 844 on its surface to carry away the lubricating oil in the oil storage chamber 841 and smear it on the inner wall of the open ring groove 723, thereby lubricating the inner wall of the open ring groove 723. The lubricating oil in the lubricating oil box 81 can enter the oil storage chamber 841 through the oil delivery pipe 83 for replenishment. When the friction between the roller 843 and the open ring groove 723 becomes smaller and can no longer drive the roller 843 to rotate, the lubricating oil will no longer enter the open ring groove 723, thus achieving the effect of reducing the friction between the open ring groove 723 and the round block 722, slowing down the aging of the overall mechanism, and not easily wasting the lubricating oil. During the turnover operation, when the rotating shaft 77 rotates, it will drive the eccentric extrusion ring 91 to repeatedly extrude the airbag 93. The air pressure in the airbag 93 will enter the air pressure chamber 92 and push the piston rod C94 to move out of the air pressure chamber 92. The movement of the piston rod C94 out of the air pressure chamber 92 will drive the cleaning brush 95 to move. When the eccentric extrusion ring 91 leaves the airbag 93, the airbag 93 rebounds, and the air pressure returns from the air pressure chamber 92 to the airbag 93. At this time, the piston rod C94 drives the cleaning brush 95 to move in the reverse direction and return to its original position. During the process of the cleaning brush 95 following the movement of the moving seat 73, it moves repeatedly to clean the surface of the rotating threaded rod 76, preventing debris from adhering to the surface of the threaded rod 76 and affecting the stability of the operation of the overall device.

[0024] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A driving device for turning over the rotor of a doubly-fed generator, comprising a rotor turning-over support (1), a rotor support (3) and a stable lifting driving mechanism (7), characterized in that: The top of the rotor turning bracket (1) is fixedly connected with a support (2). The top of the rotor bracket (3) is provided with a rotor main body (4), and a connecting pin (5) is arranged on the surface of the rotor main body (4). The stable lifting drive mechanism (7) includes a mounting frame (71), a moving seat (73) and a winding roller (79). A long groove (72) is formed at the top of the mounting frame (71). The moving seat (73) is slidably connected with the long groove (72). A threaded sleeve (74) is fixedly connected to the inner bottom of the moving seat (73). A motor A (75) is arranged at the top of the mounting frame (71). The output shaft of the motor A (75) is fixedly connected with a threaded rod (76). A motor B (78) is arranged on the front side of the moving seat (73). A rotating shaft (77) is rotatably connected to the inner side of the moving seat (73). A steel wire rope (710) is wound around the surface of the winding roller (79). A hydraulic chamber (718) penetrates and is fixedly connected to the side of the moving seat (73). A piston rod A (719) is slidably connected to the inner piston at one end of the hydraulic chamber (718). The top of the piston rod A (719) is fixedly connected with a toothed rod (720). A piston rod B (721) is slidably connected to the inner piston at the other end of the hydraulic chamber (718). One end of the piston rod B (721) far away from the hydraulic chamber (718) is fixedly connected with a round block (722). An opening ring groove (723) is formed in the side of the moving seat (73). A rotating rod (724) is fixedly connected to the side of the rotating shaft (77). A gear (725) is fixedly connected to one end of the rotating rod (724) far away from the rotating shaft (77). A lubricating mechanism (8) is arranged at the top of the piston rod B (721). A cleaning mechanism (9) is arranged inside the mounting frame (71).

2. The driving device for turning over the rotor of a doubly-fed generator according to claim 1, characterized in that: The rotor main body (4) is rotatably connected with the support (2) through the connecting pin (5). An anti - detachment bolt (6) is arranged on the surface of the connecting pin (5). A sliding groove (716) is formed in the inner side wall of the winding roller (79). A sliding block (717) is fixedly connected to the surface of the rotating shaft (77). The sliding block (717) is slidably connected inside the sliding groove (716).

3. The driving device for turning over the rotor of a doubly-fed generator according to claim 2, characterized in that: One end of the steel wire rope (710) far away from the winding roller (79) is rotatably connected with a hook A (711). A hanging seat (712) is suspended at the bottom of the hook A (711). A hook B (713) is fixedly connected to the bottom of the hanging seat (712). An upper fixing ring (714) is suspended at the bottom of the hook B (713). A lower fixing ring (715) is bolt - connected to the bottom of the upper fixing ring (714).

4. A driving device for turning over the rotor of a doubly-fed generator according to claim 3, characterized in that: The threaded sleeve (74) is in threaded connection with the threaded rod (76). The output shaft of the motor B (78) is fixedly connected with the rotating shaft (77).

5. The driving device for turning over the rotor of a doubly-fed generator according to claim 4, characterized in that: The teeth on the toothed rod (720) are meshed with the teeth on the gear (725). The round block (722) is slidably connected inside the opening ring groove (723). An oil outlet assembly (84) is arranged on the surface of the round block (722).

6. The driving device for turning over the rotor of a doubly-fed generator according to claim 5, characterized in that: The lubrication mechanism (8) includes a lubricating oil box (81). A fuel filling pipe (82) penetrates and is fixedly connected to the back side of the lubricating oil box (81). An oil delivery pipe (83) penetrates and is fixedly connected to the bottom of the lubricating oil box (81). The oil outlet assembly (84) includes an oil storage chamber (841). The oil storage chamber (841) is formed inside the round block (722). A support rod (842) is fixedly connected inside the oil storage chamber (841). A roller (843) is rotatably connected to the surface of the support rod (842). An oil-carrying pit (844) is formed on the surface of the roller (843).

7. The driving device for turning over the rotor of a doubly-fed generator according to claim 6, characterized in that: One end of the oil delivery pipe (83) away from the lubricating oil box (81) penetrates and is fixedly connected to the oil storage chamber (841). The surface of the roller (843) is in contact with the inner wall of the open ring groove (723) in the initial state.

8. A driving device for turning over the rotor of a doubly-fed generator according to claim 7, characterized in that: The cleaning mechanism (9) includes an eccentric extrusion ring (91) and a pneumatic chamber (92). The eccentric extrusion ring (91) is fixedly connected to the surface of the rotating shaft (77). The pneumatic chamber (92) is fixedly connected to the inner side wall of the moving seat (73). An airbag (93) is arranged at one end of the pneumatic chamber (92). A piston rod C (94) is slidably connected to the inner part of the other end of the pneumatic chamber (92). A cleaning brush (95) is fixedly connected to the end of the piston rod C (94) away from the pneumatic chamber (92).

9. The driving device for turning over the rotor of a doubly-fed generator according to claim 8, characterized in that: The airbag (93) is in an inflated state in the initial state, and the end of the airbag (93) away from the pneumatic chamber (92) is close to the rotating shaft (77).

10. A driving device for turning over the rotor of a doubly-fed generator according to claim 9, characterized in that: The end of the cleaning brush (95) away from the piston rod C (94) is close to the threaded rod (76), and the bristles of the cleaning brush (95) are in contact with the threaded rod (76).

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