Anti-reverse electric turning gear

Abstract

The utility model discloses an anti-reverse-rotation electric turning gear which comprises a main machine main shaft, a second motor, a shell, a gear shaft, a transmission sleeve and a main shaft, a first gear is arranged on the gear shaft, an inner gear is arranged on the front section of the transmission sleeve, the first gear is meshed with the inner gear, the rear section of the transmission sleeve is arranged on the main shaft in a sleeved mode, and a clutch is arranged between the main shaft and the second motor. A connecting block is arranged on the shell, a threaded rod is fixedly connected to the output end of the first motor and rotationally connected with the connecting block, a connecting rod is connected to the threaded rod in a threaded mode, a telescopic rod is arranged at the lower end of the connecting rod, an annular groove is formed in the transmission sleeve and matched with the telescopic rod, and an annular brake disc is arranged on the gear shaft. Braking mechanisms are symmetrically arranged on the inner wall of the shell, the braking mechanisms are arranged, the main shaft is locked, it is guaranteed that the main shaft and the hub rotate in place, disassembly and assembly of the wind power generation blades are facilitated, the reverse rotation phenomenon is prevented, and then safety and operability are improved.

Description

Technical Field

[0001] The utility model relates to the field of electric turning gear devices, in particular to an anti-reversal electric turning gear device. Background Art

[0002] With the emergence of the energy crisis, wind power generation has become more and more popular, and the single-unit capacity of wind turbines has also been rising. For large wind turbines, the main shaft needs to be stopped before maintenance and overhaul. Usually, the high-speed shaft brake disc is rotated manually to adjust the main shaft and hub to a certain position before maintenance can be carried out. This operation of rotating the high-speed shaft brake disc is called "turning".

[0003] When assembling and disassembling wind turbine blades, the main shaft needs to be driven to rotate so that the main shaft can drive the wind rotor to rotate, so that multiple wind turbine blades can be installed on the wind rotor. Since the main shaft rotation torque is very large, the conventional winch cannot lock the main shaft in time after it rotates into place, and reverse will occur, making the installation of wind turbine blades difficult, and at the same time causing a flying gear failure, which completely damages the winch device. Utility Model Content

[0004] The utility model aims to provide an anti-reverse electric turning device to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-reverse electric winch device, comprising a main shaft of a main engine, a second motor, a housing, a gear shaft, a transmission sleeve, and a main shaft, a connecting plate is provided on one side of the housing, a connecting piece is provided on the connecting plate, the gear shaft and the main shaft of the main engine are fastened and connected by a fastener, a first gear is provided on the gear shaft, an internal gear is provided on the front section of the transmission sleeve, the first gear is meshed with the internal gear, the rear section of the transmission sleeve is sleeved on the main shaft, a clutch is provided between the main shaft and the second motor, a connecting block is provided on the housing, a first motor is provided on one side of the connecting block, a threaded rod is fixedly connected to the output end of the first motor, and the threaded rod The gear shaft is provided with an annular brake disc, and a braking mechanism is symmetrically arranged on the inner wall of the outer shell, and the braking mechanism comprises a fixed frame and a brake pad. A third motor is arranged on one side of the fixed frame, and a bidirectional threaded rod is fixedly connected to the output end of the third motor, and a threaded block is symmetrically threaded on the bidirectional threaded rod, and a third slide groove is provided at the bottom end of the fixed frame, and the threaded block is slidably connected to the fixed frame through the third slide groove, and brake pads are arranged at the bottom end of the threaded block, and the brake pads are located on both sides of the annular brake disc.

[0006] Preferably, a second gear is arranged on the gear shaft, and a sensor probe is arranged on the housing, and the sensor probe corresponds to the second gear.

[0007] Preferably, a transmission key is arranged in the rear section of the transmission sleeve, a key slot is provided on the main shaft, and the transmission key is slidably connected to the key slot.

[0008] Preferably, a sliding rod is provided in the connecting block, and the sliding rod is slidably connected to the connecting rod.

[0009] Preferably, a universal ball is arranged in the annular groove.

[0010] Preferably, a first slide groove is provided at the bottom end of the connecting block, and a second slide groove is provided on the outer shell, and the first slide groove and the second slide groove are adapted to and slidably connected with the connecting rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By setting a braking mechanism, the main shaft is locked to ensure that the main shaft and the hub rotate into place, which is convenient for the disassembly and assembly of wind turbine blades and prevents reversal, thereby improving safety and operability. By setting a connecting block, a connecting rod, a telescopic rod and a transmission sleeve, when the cranking starts, the main shaft transmits torque to the main shaft of the main engine to complete the cranking work. When the cranking is completed, the telescopic rod drives the transmission sleeve to slide on the main shaft to disengage the transmission sleeve from the gear shaft. There is no mechanical connection between the cranking and the main engine, which prevents damage to the cranking device when the main engine reverses, thereby causing a runaway failure. At the same time, when the sensor probe detects a reversal signal, the clutch will disconnect the main shaft from the second motor, providing double protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of an anti-reverse electric turning device of this embodiment;

[0015] Figure 2 It is a schematic diagram of the internal structure of an anti-reverse electric turning device of this embodiment;

[0016] Figure 3 This embodiment Figure 2 Enlarged schematic diagram of part A.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Shell; 2. Universal ball bearing; 3. First slide; 4. Telescopic rod; 5. Threaded rod; 6. Connecting rod; 7. Slide rod; 8. Connecting block; 9. First motor; 10. Second slide; 11. Main shaft; 12. Bearing; 13. End cover; 14. Clutch; 15. Second motor; 16. Annular groove; 17. Transmission sleeve; 18. Limit sleeve; 19. First gear; 20. Second gear; 21. Sensor probe; 22. Gear shaft; 23. Connecting piece; 24. Connecting plate; 25. Fastener; 26. Main shaft; 27. Brake pad; 28. Third motor; 29. ​​Threaded block; 30. Bidirectional threaded rod; 31. Fixed frame; 32. Third slide; 33. Annular brake disc. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3The utility model provides a technical solution: an anti-reverse electric winch device, comprising a main engine main shaft 26, a second motor 15, a housing 1, a gear shaft 22, a transmission sleeve 17, and a main shaft 11. A connecting plate 24 is provided on one side of the housing 1, and a connecting piece 23 is provided on the connecting plate 24. The gear shaft 22 and the main engine main shaft 26 are fastened and connected by a fastener 25. A first gear 19 is provided on the gear shaft 22, and an internal gear is provided on the front section of the transmission sleeve 17. The first gear 19 meshes with the internal gear. The rear section of the transmission sleeve 17 is sleeved on the main shaft 11. A clutch 14 is provided between the main shaft 11 and the second motor 15. A connecting block 8 is provided on the housing 1, and a first motor 9 is provided on one side of the connecting block 8. A threaded rod 5 is fixedly connected to the output end of the first motor 9, and the threaded rod 5 is connected to the The connecting block 8 is rotatably connected, the threaded rod 5 is threadedly connected with the connecting rod 6, the lower end of the connecting rod 6 is provided with a telescopic rod 4, the transmission sleeve 17 is provided with an annular groove 16, the annular groove 16 is adapted to the telescopic rod 4, an annular brake disc 33 is provided on the gear shaft 22, and a braking mechanism is symmetrically provided on the inner wall of the outer shell 1, the braking mechanism includes a fixed frame 31 and a brake pad 27, a third motor 28 is provided on one side of the fixed frame 31, a bidirectional threaded rod 30 is fixedly connected to the output end of the third motor 28, and a threaded block 29 is symmetrically threaded on the bidirectional threaded rod 30, a third slide groove 32 is provided at the bottom end of the fixed frame 31, the threaded block 29 is slidably connected to the fixed frame 31 through the third slide groove 32, and a brake pad 27 is provided at the bottom end of the threaded block 29, and the brake pad 27 is located on both sides of the annular brake disc 33.

[0021] Specifically, a second gear 20 is disposed on the gear shaft 22 , and a sensor probe 21 is disposed on the housing 1 . The sensor probe 21 corresponds to the second gear 20 , and is used to monitor the rotation speed of the main shaft 26 of the host machine and whether there is a reverse rotation.

[0022] Specifically, a transmission key is provided in the rear section of the transmission sleeve 17, and a key slot is provided on the main shaft 11. The transmission key is slidably connected to the key slot. When the main shaft 11 rotates, the transmission sleeve 17 can be driven to rotate together. The transmission sleeve 17 slides on the main shaft 11 through the cooperation of the key slot and the transmission key, so as to facilitate disengagement from the gear shaft 22.

[0023] Specifically, a first slide groove 3 is provided at the bottom end of the connecting block 8, and a second slide groove 10 is provided on the outer shell 1. The first slide groove 3 and the second slide groove 10 are adapted to and slidably connected with the connecting rod 6. A slide rod 7 is provided in the connecting block 8, and the slide rod 7 is slidably connected with the connecting rod 6. The first motor 9 is started to drive the threaded rod 5 to rotate. Under the limiting action of the slide rod 7, the connecting rod 6 is driven to slide back and forth along the first slide groove 3 and the second slide groove 10, and at the same time, 17 is driven to slide on the main shaft 11 through the cooperation of the keyway and the transmission key.

[0024] Specifically, a universal ball 2 is disposed in the annular groove 16 to reduce the friction resistance between the telescopic rod 4 and the transmission sleeve 17 .

[0025] A specific application example of this embodiment is:

[0026] When the device is in use, the housing 1 is connected to the main machine through the connecting plate 24 and the connecting piece 23, and the gear shaft 22 is fastened to the main machine main shaft 26 through the fastener 25. After the connection is completed, the first motor 9 is started to drive the threaded rod 5 to rotate. Under the limiting action of the slide bar 7, the connecting rod 6 is driven to slide forward along the first slide groove 3 and the second slide groove 10, and at the same time, the transmission sleeve 17 is driven to slide forward on the main shaft 11 through the cooperation of the keyway and the transmission key. At this time, the internal gear in the transmission sleeve 17 is meshed with the first gear 19, and the second motor 15 is started to drive the main shaft 11 and the transmission sleeve 17 to rotate, and at the same time, the gear shaft 22 and the main machine main shaft 26 start to rotate, that is, the turning is started. When the main shaft and the hub rotate to the angle for the blade to be disassembled and assembled, the gear shaft 22 and the main machine main shaft 26 start to rotate. The turning device stops rotating, and the third motor 28 is started to drive the bidirectional threaded rod 30 to rotate, and at the same time drives the threaded block 29 and the brake pad 27 to approach the annular brake disc 33, and brakes the annular brake disc 33 and the gear shaft 22 to lock the main shaft 26 of the main engine to prevent reversal, ensure that the hub rotates in place, and facilitate the disassembly and assembly of the blades. When the main shaft 26 of the main engine reverses, the sensor probe 21 detects a reversal signal. If the main shaft 11 is not disconnected from the gear shaft 22, the telescopic rod 4 can be driven to move backward to drive the transmission sleeve 17 to disengage from the gear shaft 22. At the same time, when the sensor probe 21 detects a reversal signal, the clutch 14 will disconnect the main shaft 11 from the second motor 15 to prevent damage to the turning device.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-reverse electric turning device, comprising a main engine spindle (26) and a second motor (15), characterized in that: The machine further comprises a housing (1), a gear shaft (22), a transmission sleeve (17), and a main shaft (11); a connecting plate (24) is provided on one side of the housing (1); a connecting piece (23) is provided on the connecting plate (24); the gear shaft (22) and the main shaft (26) of the main engine are fastened together by a fastener (25); a first gear (19) is provided on the gear shaft (22); an internal gear is provided on the front section of the transmission sleeve (17); the first gear (19) meshes with the internal gear; a rear section of the transmission sleeve (17) is sleeved on the main shaft (11); a clutch (14) is provided between the main shaft (11) and the second motor (15); a connecting block (8) is provided on the housing (1); a first motor (9) is provided on one side of the connecting block (8); a threaded rod (5) is fixedly connected to the output end of the first motor (9); the threaded rod (5) is rotatably connected to the connecting block (8); a threaded connection on the threaded rod (5) A connecting rod (6) is connected, a telescopic rod (4) is arranged at the lower end of the connecting rod (6), an annular groove (16) is provided on the transmission sleeve (17), the annular groove (16) is adapted to the telescopic rod (4), an annular brake disc (33) is provided on the gear shaft (22), a braking mechanism is symmetrically provided on the inner wall of the housing (1), the braking mechanism comprises a fixed frame (31) and a brake pad (27), a third motor (28) is provided on one side of the fixed frame (31), a bidirectional threaded rod (30) is fixedly connected to the output end of the third motor (28), a threaded block (29) is symmetrically threadedly connected to the bidirectional threaded rod (30), a third sliding groove (32) is provided at the bottom end of the fixed frame (31), the threaded block (29) is slidably connected to the fixed frame (31) through the third sliding groove (32), a brake pad (27) is provided at the bottom end of the threaded block (29), and the brake pad (27) is located on both sides of the annular brake disc (33).

2. The anti-reverse electric turning device according to claim 1, characterized in that: A second gear (20) is arranged on the gear shaft (22), and a sensor probe (21) is arranged on the housing (1), wherein the sensor probe (21) corresponds to the second gear (20).

3. The anti-reverse electric turning device according to claim 1, characterized in that: A transmission key is arranged in the rear section of the transmission sleeve (17), a key slot is provided on the main shaft (11), and the transmission key is slidably connected to the key slot.

4. The anti-reverse electric turning device according to claim 1, characterized in that: A sliding rod (7) is arranged inside the connecting block (8), and the sliding rod (7) is slidably connected to the connecting rod (6).

5. The anti-reverse electric turning device according to claim 1, characterized in that: A universal ball (2) is arranged in the annular groove (16).

6. The anti-reverse electric turning device according to claim 1, characterized in that: The bottom end of the connecting block (8) is provided with a first sliding groove (3), and the outer shell (1) is provided with a second sliding groove (10), and the first sliding groove (3) and the second sliding groove (10) are adapted to and slidably connected to the connecting rod (6).

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