Turning gear of wind generating set

Abstract

The invention discloses a wind generating set turning device which comprises a connecting frame, a workbench, a separating device, a motor, a turbine, a worm and a connecting shaft, one end of the connecting frame can be fixedly connected with a shell of a generating set, and the separating device is fixedly connected to the workbench; the separating device comprises a hydraulic pump, a hydraulic cylinder, a piston rod, a wheel shaft, wheels, a supporting frame, a fixing base and a supporting plate, the piston rod is movably connected with the hydraulic cylinder, the wheel shaft is fixedly connected with the piston rod, the wheels are rotationally connected with the wheel shaft, the supporting frame is rotationally connected with the fixing base, the supporting frame is rotationally connected with the wheel shaft, and the wheels are movably connected with the workbench and the supporting plate. The motor is rotationally connected with the turbine, the turbine is in meshed connection with the worm, the connecting shaft is connected with the input end of the generator set, and the turbine is provided with a notch. According to the wind generating set turning device, the problems of supporting stability of a traditional wind generating set turning device, accuracy when the generator set is disconnected and unicity of a driving mode are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine cranking, and more particularly to a wind turbine cranking device. Background Art

[0002] The turning equipment is an important auxiliary tool in industrial production. It is mainly used to perform slow and precise rotation operations on large rotors or components during the installation, inspection and maintenance of heavy equipment. However, the turning equipment of existing wind turbines still has some defects, which affect the operability and stability of the equipment.

[0003] In order to enable wind turbines to better complete energy conversion, wind turbines are usually placed behind the blades and at a certain height from the ground. However, there are certain problems during installation and maintenance. When the winch equipment is working, since the generator set is located at a high altitude, the connection between the winch equipment and the generator set lacks a stable support structure, resulting in insufficient stability of the entire system. This unstable working state will directly affect the accuracy of installation and maintenance, and may cause problems such as inaccurate component alignment and inadequate bolt tightening. In severe cases, it may even affect the operating performance and service life of the generator set. Especially in severe weather conditions, high-altitude operations are already risky. If the winch equipment shakes or shifts again, it will increase the difficulty of operation and safety hazards.

[0004] During generator set operation, when precise angle adjustment of blades or gears is required to complete maintenance or installation work, the winch equipment must be able to cut off power output in a timely manner. However, the currently commonly used winch devices have obvious design flaws: their power separation mechanism responds slowly and cannot achieve rapid tripping. This lag will extend the maintenance window, increase equipment idling energy consumption, and may even cause mechanical damage due to untimely power cut-off.

[0005] At present, most wind turbine cranking equipment adopts a single operation mode, relying entirely on motor drive or only supporting manual operation. This single mode has obvious limitations. Although motor drive is labor-saving and efficient, it cannot be used in the event of power failure or precise debugging; pure manual operation is time-consuming and labor-intensive, and it is difficult to meet the cranking needs of large units. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In view of the problems existing in the prior art, the present invention provides a wind turbine generator set turning device to solve the technical problems mentioned in the background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind turbine generator set winch device, comprising a connecting frame, a workbench, a separating device, a motor, a turbine, a worm, a manual operating device and a connecting shaft, wherein one end of the connecting frame can be fixedly connected to the outer casing of the generator set, the workbench is fixedly connected to the connecting frame, the separating device is fixedly connected to the workbench, the separating device comprises a hydraulic pump, a hydraulic cylinder, a piston rod, a wheel axle, a wheel, a supporting frame, a fixing seat and a supporting plate, the hydraulic pump is fixedly mounted on the workbench, the hydraulic cylinder is fixedly connected to the hydraulic pump, the piston rod is fixed to the hydraulic The cylinder is movably connected, the wheel axle is fixedly connected to the piston rod, the wheel is rotatably connected to the wheel axle, the fixed seat is fixedly connected to the workbench or the pallet, the support frame is rotatably connected to the fixed seat, the support frame is rotatably connected to the wheel axle, the wheel is movably connected to the workbench and the pallet, the motor is fixedly connected to the pallet, the motor is rotatably connected to the turbine, the turbine is meshed with the worm, the connecting shaft is fixedly connected to the turbine, the connecting shaft is connected to the input end of the generator set, the turbine is provided with a notch, and the manual operating device is fixedly connected to the workbench and movably connected to the turbine.

[0010] The present invention is further configured as follows: the manual operating device includes a fixed frame, a gear shaft, a connecting plate, a rotating gear, a connecting slot and a handle; the fixed frame is fixedly connected to the workbench; the fixed frame is fixedly connected to the connecting plate; the gear shaft passes through the connecting plate and is fixedly connected to the rotating gear; the gear shaft is rotatably connected to the connecting plate; the gear shaft is movably connected to the slot; the rotating gear is provided with a connecting slot; and the handle is movably connected to the connecting slot.

[0011] The present invention is further configured such that the turbine is provided with a plurality of sensors, and the sensors are used to detect whether the components of the generator set cooperate normally.

[0012] The present invention is further configured such that the connecting plate is provided with a locking device, the locking device comprising a mounting post and a locking frame, the mounting post being fixedly connected to the connecting plate, the locking frame being cooperatively connected to the mounting post to ensure that when the generator set is rotated to the required position, the locking frame locks the rotating gear, causing the generator set to stop rotating.

[0013] The present invention is further configured such that the motor and the worm are rotationally connected via a coupling, thereby ensuring the stability of the worm's rotation.

[0014] The present invention is further configured such that the workbench is provided with a tool box, the tool box is provided with a handle, and the handle can be placed in the tool box, thereby improving the convenience of operation for the staff.

[0015] The present invention is further configured such that a pedal is provided under the workbench so that workers have a foothold when performing aerial work, thereby ensuring the safety of the workers.

[0016] The present invention is further configured such that the surface of the workbench is provided with an anti-corrosion coating, which comprises the following components: 54.5-68.1% resin, 9.5-14.8% curing agent, 10-15% homemade titanium-molybdenum alloy nanopowder, 10-15% homemade modified wear-resistant and anti-friction filler, and 0.8% additive; the percentages are by mass.

[0017] The present invention is further configured such that the self-made titanium-molybdenum alloy nanopowder comprises: 50-55% titanium coarse powder, 37-42% molybdenum coarse powder, 3% dispersant and 5% bonding agent.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides the following beneficial effects:

[0020] 1. A supporting structure for the turning equipment is formed by connecting the frame and the workbench, which improves the stability of the equipment, prevents the turning equipment from deflecting due to vibration or external force during operation, ensures the accuracy of the turning equipment during use, and effectively disperses the load, reducing stress concentration on key components. The supporting structure enhances wind resistance and prevents displacement of the equipment in extreme weather conditions. During maintenance, the supporting structure provides a solid foundation, facilitates safe operation, reduces the difficulty of manual adjustment, and improves efficiency.

[0021] 2. A worm gear separation device is composed of a hydraulic pump, hydraulic cylinder, piston rod, wheel axle, wheel, support frame, fixed seat and support plate. When the generator set needs to be stopped at the required angle, the separation device is used to separate the worm gear. This separation action cuts off the power transmitted from the turning device to the generator set, causing the generator set to gradually slow down under the action of inertia and eventually stop at a predetermined angle. The entire separation process is smooth and reliable, and the shutdown position is precisely controllable, which not only improves operational safety, but also can adjust the position according to the height of the generator set equipment to engage the worm gear, thereby improving the flexibility of equipment use.

[0022] 3. Through the coordination of the handle and the notch, the turning equipment has a dual-mode design of motor drive and manual drive. This design has significant practical advantages. The motor drive mode provides stable power through the motor, which is easy to operate, saves time and effort, and can achieve precise angle control and stable speed output, greatly improving work efficiency. The manual drive mode serves as a reliable backup solution. In the event of power outage or motor failure, basic turning operations can still be completed through the handwheel or rocker mechanism, ensuring the operability of the equipment in emergency situations. The two drive modes complement each other, which not only meets the needs of daily efficient operations, but also ensures operational reliability under special working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a wind turbine generator turning device in the present invention;

[0024] Figure 2 Schematic diagram of the structure of the separation device in the present invention;

[0025] Figure 3 This is a schematic diagram of the connection between the motor, coupling and worm in the present invention;

[0026] Figure 4 This is a schematic diagram of the connection between the fixing frame, the gear shaft and the connecting plate in the present invention;

[0027] Figure 5 This is a schematic diagram of the connection between the rotating gear, sensor, connecting plate, mounting column and locking frame in the present invention;

[0028] Figure 6 It is a supplementary schematic diagram of the overall equipment in the present invention;

[0029] Figure 7 This is a schematic diagram of the connection between the turbine and the worm in the present invention.

[0030] In the figure: 1. Connecting frame; 2. Workbench; 3. Motor; 4. Turbine; 5. Worm; 6. Connecting shaft; 7. Hydraulic pump; 8. Hydraulic cylinder; 9. Piston rod; 10. Wheel axle; 11. Wheel; 12. Support frame; 13. Fixed seat; 14. Support plate; 15. Notch; 16. Fixed frame; 17. Gear shaft; 18. Connecting plate; 19. Rotating gear; 20. Connecting groove; 21. Handle; 22. Sensor; 23. Mounting column; 24. Locking frame; 25. Coupling; 26. Tool box; 27. Handle; 28. Pedal. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0033] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0034] See also Figure 1-Figure 5A wind turbine generator set turning device includes a connecting frame 1, a workbench 2, a separation device, a motor 3, a turbine 4, a worm 5, a manual operating device and a connecting shaft 6. One end of the connecting frame 1 can be fixedly connected to the outer casing of the generator set, the workbench 2 is fixedly connected to the connecting frame 1, and the separation device is fixedly connected to the workbench 2. The separation device includes a hydraulic pump 7, a hydraulic cylinder 8, a piston rod 9, a wheel shaft 10, a wheel 11, a support frame 12, a fixing seat 13 and a support plate 14. The hydraulic pump 7 is fixedly installed on the workbench 2, the hydraulic cylinder 8 is fixedly connected to the hydraulic pump 7, the piston rod 9 is movably connected to the hydraulic cylinder 8, and the wheel The shaft 10 is fixedly connected to the piston rod 9, the wheel 11 is rotatably connected to the wheel shaft 10, the fixed seat 13 is fixedly connected to the workbench 2 or the pallet 14, the support frame 12 is rotatably connected to the fixed seat 13, the support frame 12 is rotatably connected to the wheel shaft 10, the wheel 11 is movably connected to the workbench 2 and the pallet 14, the motor 3 is fixedly connected to the pallet 14, the motor 3 is rotatably connected to the turbine 4, the turbine 4 is meshed with the worm 5, the connecting shaft 6 is fixedly connected to the turbine 4, the connecting shaft 6 is connected to the input end of the generator set, the turbine 4 is provided with a notch 15, and the manual operating device is fixedly connected to the workbench 2 and movably connected to the turbine 4.

[0035] In a further embodiment of the present application, the manual operating device includes a fixed frame 16, a gear shaft 17, a connecting plate 18, a rotating gear 19, a connecting slot 20 and a handle 21, the fixed frame 16 is fixedly connected to the workbench 2, the fixed frame 16 is fixedly connected to the connecting plate 18, the gear shaft 17 passes through the connecting plate 18 and is fixedly connected to the rotating gear 19, the gear shaft 17 is rotatably connected to the connecting plate 18, the gear shaft 17 is movably connected to the slot 15, the rotating gear 19 is provided with a connecting slot 20, and the handle 21 is movably connected to the connecting slot 20. After inserting the handle 21 into the connecting slot 20, the rotating gear 19 can be rotated, and the rotating gear 19 transmits the rotational force to the turbine 4 through the gear shaft 17 and the slot 15. The rotation of the turbine 4 drives the connecting shaft 6 to rotate, so that the generator set rotates and operates through manual operation.

[0036] In a further embodiment of the present application, the turbine 4 is provided with a plurality of sensors 22 , and the sensors 22 are used to detect whether the components of the generator set cooperate normally.

[0037] In a further embodiment of the present application, the connecting plate 18 is provided with a locking device, which includes a mounting column 23 and a locking frame 24. The mounting column 23 is fixedly connected to the connecting plate 18, and the locking frame 24 is cooperatively connected with the mounting column 23 to ensure that when the generator set is rotated to the required position, the locking frame will lock the rotating gear 19 to stop the generator set from rotating.

[0038] In a further embodiment of the present application, the motor 3 and the worm 5 are rotationally connected via a coupling 25 , thereby improving the rotation stability of the motor 3 and the worm 5 .

[0039] In a further embodiment of the present application, the workbench 2 is provided with a toolbox 26, and the toolbox 26 is provided with a handle 27. The toolbox 26 can be opened or closed by the handle 27, and the handle 21 and other tools can be stored in the toolbox 26 to facilitate the work of the staff. A pedal 28 is provided under the workbench 2 to provide a foothold for workers working at heights to ensure the safety of the workers.

[0040] In this embodiment, when the equipment needs to be used, the motor 3 on the start-up workbench 2 is rotated to drive the coupling 25 and the worm 5 to rotate, the worm 5 engages with the turbine 4 to rotate, and the turbine 4 drives the connecting shaft 6 to rotate, transmitting power to the generator set. The sensor 22 on the turbine 4 can inform the staff of the engagement status of each component in the generator set.

[0041] More specifically, when it is necessary to classify the equipment and stop the generator set at a specific angle, the hydraulic pump 7 is started to extend and retract the piston rod 9 in the hydraulic cylinder 8, and the piston rod 9 pushes the wheel shaft 10 to move. The movement of the wheel shaft 10 causes the wheel 11 to rotate. The rotation of the wheel 11 causes the support frame 12 to rotate around the fixed seat 13, thereby lowering the support plate 14. The lowering of the support plate 14 causes the motor 3, the coupling 25 and the worm 5 to descend, and the worm wheel 4 and the worm 5 are separated, completing the stopping of the power supply of the winching equipment. When the winching equipment requires manual fine adjustment or electrical failure requires manual adjustment, the handle 21 is inserted into the connecting groove 20 on the rotating gear 19 for manual rotation, and the gear shaft 17 passes through the connecting plate 18 and The slot 15 is connected so that the gear shaft 17 rotates in the connecting plate 18 connected to the fixing frame 16, and the power of the handle 21 is transmitted to the connecting shaft 6 to rotate the generator set. When the equipment needs to be stopped at the required angle, the locking frame 24 is inserted into the mounting column 23, and the locking end of the locking frame 24 is embedded in the tooth groove of the rotating gear 19 to complete the locking of the rotating gear 19. When using the handle 21, the staff can stand on the pedal 28 for convenience of work, and at the same time open the tool box 26 through the handle 27. The handle 21 and other tools can be stored in the tool box 26. The connecting frame 1 can fix the workbench 2 on the outer casing of the generator set to provide stability for the overall equipment.

[0042] In summary, when the entire equipment is in use or running: when the equipment needs to be used, start the motor 3 on the workbench 2 to rotate and drive the coupling 25 and the worm 5 to rotate, the worm 5 engages with the turbine 4 to rotate, and the turbine 4 drives the connecting shaft 6 to rotate, transmitting power to the generator set. The sensor 22 on the turbine 4 can inform the staff of the engagement status of each component in the generator set.

[0043] When it is necessary to classify the equipment and stop the generator set at a specific angle, start the hydraulic pump 7 to make the piston rod 9 extend and retract in the hydraulic cylinder 8, and the piston rod 9 pushes the wheel shaft 10 to move. The movement of the wheel shaft 10 makes the wheel 11 rotate. The rotation of the wheel 11 makes the support frame 12 rotate around the fixed seat 13, so that the support plate 14 drops. The drop of the support plate 14 makes the motor 3, the coupling 25 and the worm 5 drop, and the worm wheel 4 and the worm 5 are separated, and the winching equipment stops supplying energy. When the winching equipment needs manual fine adjustment or electrical failure requires manual adjustment, the handle 21 is inserted into the connecting groove 20 on the rotating gear 19 for manual rotation. The gear shaft 17 passes through the connecting plate 18 and the slot 1 5 is connected, so that the gear shaft 17 rotates in the connecting plate 18 connected to the fixing frame 16, and the power of the handle 21 is transmitted to the connecting shaft 6 to rotate the generator set. When the equipment needs to be stopped at a required angle, the locking frame 24 is inserted into the mounting column 23, and the locking end of the locking frame 24 is embedded in the tooth groove of the rotating gear 19 to complete the locking of the rotating gear 19. When using the handle 21, the staff can stand on the pedal 28 for convenient work. At the same time, the tool box 26 is opened through the handle 27. The handle 21 and other tools can be stored in the tool box 26. The connecting frame 1 can fix the workbench 2 to the outer casing of the generator set, providing stability for the entire equipment.

[0044] The anti-corrosion coating comprises the following components: 54.5-68.1% of resin, 9.5-14.8% of curing agent, 10-15% of homemade titanium-molybdenum alloy nanopowder, 10-15% of homemade modified wear-resistant and anti-friction filler, and 0.8% of auxiliary agent; the percentages are by mass; the homemade titanium-molybdenum alloy nanopowder comprises: 50-55% of titanium-containing coarse powder, 37-42% of molybdenum-containing coarse powder, 3% of dispersant, and 5% of bonding agent.

[0045] The percentages are by mass; the self-made titanium-molybdenum alloy nanopowder is prepared by a mechanochemical method, the steps of which are as follows:

[0046] 1) Premixing: Add the raw material coarse powder according to the formula amount into the ball mill and mix;

[0047] 2) Primary grinding: Fill the ball mill with inert gas and dry grind the material to fully mill it, maintain an inert gas environment, and achieve initial refinement;

[0048] 3) High-energy ball milling: In an inert gas environment, the rotation speed is increased to further refine the material so that it reacts with the added bonding agent; high-energy ball milling is used to obtain a slurry;

[0049] 4) Powdering: The powdering process includes two steps: a. separating the dispersant and solid powder in the slurry using a high-speed centrifuge; b. drying the solid powder under the protection of an inert gas or at a certain vacuum; the resulting dried product is titanium-molybdenum alloy nanopowder; the inert gas is nitrogen; the homemade modified wear-resistant and anti-friction filler uses metal oxides as wear-resistant aggregates, wear-resistant ceramic powder as filler, oriented and non-oriented reinforced ceramic fiber powder as internal force reinforcement, spherical graphite powder, and molybdenum powder as surface lubricants; the metal oxides include 15-20% magnesium oxide, 20-25% aluminum oxide, 30-35% silicon oxide, and 25-30% zirconium oxide; the raw materials are premixed; the percentages are by mass; the resin is selected from an epoxy resin modified with a phenolic resin; the mass ratio of the epoxy resin to the phenolic resin is 1:0.1-0.2; and the molecular weight of the epoxy resin is in the range of 2000-2500.

[0050] In all the schemes mentioned above, the connection between the two parts can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be described here one by one. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine generator turning device, characterized in that: The invention comprises a connecting frame (1), a workbench (2), a separating device, a motor (3), a turbine (4), a worm (5), a manual operating device and a connecting shaft (6); one end of the connecting frame (1) can be fixedly connected to the housing of the generator set; the workbench (2) is fixedly connected to the connecting frame (1); the separating device is fixedly connected to the workbench (2); the separating device comprises a hydraulic pump (7), a hydraulic cylinder (8), a piston rod (9), a wheel shaft 10, a wheel (11), a supporting frame (12), a fixing seat (13) and a supporting plate (14); the hydraulic pump (7) is fixedly installed on the workbench (2); the hydraulic cylinder (8) is fixedly connected to the hydraulic pump (7); the piston rod (9) is movably connected to the hydraulic cylinder (8); the wheel shaft (10) is fixed to the piston rod (9); The invention relates to a fixed connection, wherein the wheel (11) is rotationally connected to the wheel shaft (10), the fixing seat (13) is fixedly connected to the workbench (2) or the supporting plate (14), the supporting frame (12) is rotationally connected to the fixing seat (13), the supporting frame (12) is rotationally connected to the wheel shaft (10), the wheel (11) is movably connected to the workbench (2) and the supporting plate (14), the motor (3) is fixedly connected to the supporting plate (14), the motor (3) is rotationally connected to the turbine (4), the turbine (4) is meshed with the worm (5), the connecting shaft (6) is fixedly connected to the turbine (4), the connecting shaft (6) is connected to the input end of the generator set, the turbine (4) is provided with a notch (15), and the manual operating device is fixedly connected to the workbench (2) and movably connected to the turbine (4).

2. The wind turbine generator turning device according to claim 1, characterized in that: The manual operating device comprises a fixed frame (16), a gear shaft (17), a connecting plate (18), a rotating gear (19), a connecting groove (20) and a handle (21); the fixed frame (16) is fixedly connected to the workbench (2); the fixed frame (16) is fixedly connected to the connecting plate (18); the gear shaft (17) passes through the connecting plate (18) and is fixedly connected to the rotating gear (19); the gear shaft (17) is rotatably connected to the connecting plate (18); the gear shaft (17) is movably connected to the notch (15); the rotating gear (19) is provided with a connecting groove (20); and the handle (21) is movably connected to the connecting groove (20).

3. The wind turbine generator turning device according to claim 1, characterized in that: The turbine (4) is provided with a plurality of sensors (22).

4. The wind turbine generator turning device according to claim 2, characterized in that: The connecting plate (18) is provided with a locking device, which includes a mounting post (23) and a locking frame (24). The mounting post (23) is fixedly connected to the connecting plate (18), and the locking frame (24) is cooperatively connected to the mounting post (23).

5. The wind turbine generator turning device according to claim 1, characterized in that: The motor (3) and the worm (5) are rotationally connected via a coupling (25).

6. The wind turbine generator turning device according to claim 1, characterized in that: The workbench (2) is provided with a tool box (26), and the tool box (26) is provided with a handle (27).

7. The wind turbine generator turning device according to claim 6, characterized in that: A pedal (28) is provided below the workbench (2).

8. The wind turbine generator turning device according to claim 6, characterized in that: The surface of the workbench (2) is provided with an anti-corrosion coating.

9. The wind turbine generator turning device according to claim 8, characterized in that: The anti-corrosion coating comprises the following components: 9.5-14.8% of a curing agent, 10-15% of a homemade titanium-molybdenum alloy nanopowder, 10-15% of a homemade modified wear-resistant and anti-friction filler, 0.8% of an additive, 5-20 parts of an acrylic resin, 5-20 parts of an alkyd resin, 2-8 parts of cerium nitrate, 2-4 parts of a preservative, 2-4 parts of propylene glycol and 3-6 parts of aluminum hydroxide; the percentages are by mass.

10. The wind turbine generator turning device according to claim 9, characterized in that: The self-made titanium-molybdenum alloy nano powder comprises 50-55% of titanium coarse powder, 37-42% of molybdenum coarse powder, 3% of dispersant and 5% of bonding agent.

Images