A turning device for the high-speed shaft of a wind turbine

Abstract

This utility model relates to the field of wind turbine technology, and in particular to a turning device for a high-speed shaft of a wind turbine. It includes a drive motor with an integrated mounting base welded to its bottom. A gearbox is located on one side of the drive motor's output end. A rotatable main shaft is inserted through the gearbox from both sides. The left end of the main shaft connects to the output end of the drive motor, and is connected to the output end of the drive motor via a coupling. A flange is fixedly fitted on the main shaft and located to the left of the gearbox. Multiple screws are mounted in a circular array on the left side of the flange. A drive gear, fitted to the left side of the flange, is fitted on the left end of the main shaft. This utility model, through multi-drive coordination, precise positioning, automatic lubrication, and recovery design, effectively solves the problems of unstable transmission, low positioning accuracy, insufficient lubrication, and poor adaptability of traditional turning devices, significantly improving the safety, efficiency, and economy of high-speed shaft maintenance for wind turbines.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a turning device for a high-speed shaft of a wind turbine. Background Technology

[0002] The turning gear of a wind turbine is used to slowly rotate the main shaft of the wind turbine by manual or mechanical means (such as turning gear motors or hydraulic devices), so that the rotor (impeller, main shaft, etc.) is rotated to a specific angle, making it easier for workers to directly access the target components and avoiding operational difficulties or safety hazards caused by inconvenient component positions. When inspecting blades, the turning gear can fix the blades in a position that is easy for personnel to climb on the ground or that can be operated by hoisting equipment, reducing the risks of working at height.

[0003] Traditional turning methods are mainly divided into two categories: manual turning and simple mechanical turning. Mechanical turning often uses a single drive source to drive the high-speed shaft to rotate. Due to the large overall mass and strong inertia of the high-speed shaft and related components, a single drive is prone to transmission instability, which may cause problems such as gear meshing impact and shaft misalignment. At the same time, the lack of effective lubrication and positioning mechanisms further affects the turning accuracy and equipment life. Therefore, this application proposes a turning device for the high-speed shaft of a wind turbine. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a turning device for the high-speed shaft of a wind turbine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a turning device for a high-speed shaft of a wind turbine, including a drive motor and an integrated mounting base welded to the bottom;

[0006] The gearbox is located on one side of the output end of the drive motor;

[0007] The main shaft is inserted into the gearbox from both sides. The left end of the main shaft is connected to the output end of the drive motor, and the left end of the main shaft is connected to the output end of the drive motor through a coupling.

[0008] The flange is fixedly sleeved on the main shaft and located on the left side of the gearbox. Multiple screws are installed in a circular array on the left side of the flange.

[0009] The drive gear is sleeved on the left end of the main shaft and fits against the left side of the flange. Near the center of the drive gear, there are openings in a circular array with the same number of screws. The multiple openings on the drive gear are respectively sleeved on the corresponding screws. Each screw has a nut threaded on one end that passes through the opening.

[0010] A fixed frame is mounted outside the drive gear, and the middle part of both the left and right sides of the fixed frame is set as an opening;

[0011] The transmission mechanism consists of four parts, which are installed at the four corners on the left side of the fixed frame. The four transmission mechanisms are arranged in a circular array around the drive gear and mesh with it.

[0012] Optionally, the transmission mechanism includes a transmission motor and a transmission gear. The transmission motor is installed at the corner on the left side of the fixed frame, and the output end of the transmission motor passes through the side wall of the fixed frame and extends into its interior. The transmission gear is fixedly installed at the output end of the transmission motor, and the side wall of the transmission gear meshes with the side wall of the drive gear.

[0013] Optionally, through holes are provided at the four corners on the right side of the fixed frame. A rectangular connecting frame is provided on the right side of the fixed frame. Positioning rods are fixedly connected at the four corners on the left side of the connecting frame. The four positioning rods are movably inserted into the corresponding through holes, and the four positioning rods can extend into the fixed frame and engage with one of the teeth of the corresponding transmission gear. Grooves are provided at the middle position of the vertical parts on both sides of the fixed frame and the connecting frame. Hydraulic rods are fixedly installed in the two grooves. The output ends of the two hydraulic rods are fixedly connected to the middle position of the vertical parts on both sides of the connecting frame.

[0014] Optionally, an oil storage tank is fixedly installed on the top of the fixed frame, the bottom of the oil storage tank extends into the fixed frame, and multiple neatly arranged oil-absorbing cotton ropes are inserted through the bottom of the oil storage tank. The bottom of each oil-absorbing cotton rope contacts the top of the drive gear. An oil inlet is provided at the top of the oil storage tank, and a sealing cap is threaded onto the top of the oil inlet.

[0015] Optionally, an oil collection box is fixedly installed at a lower position on the inner wall of the fixed frame. The oil collection box is located below the drive gear and the transmission gear, and the two sides of the oil collection box are respectively attached to the two sides of the inner wall of the fixed frame.

[0016] Optionally, the bottom of the fixed frame is provided with an extension plate, and bolts are inserted at each corner of the extension plate. The base of the drive motor, the bottom of the gearbox, and the bottom of the fixed frame are all on the same horizontal plane.

[0017] The beneficial effects of this utility model are:

[0018] By using four sets of transmission mechanisms (including transmission motors and transmission gears) arranged in a circular array to mesh with the drive gear, a uniform and symmetrical driving torque is formed. Compared with traditional single-drive-source turning equipment, this can effectively distribute the load and avoid problems such as gear meshing impact and shaft misalignment caused by uneven force. This ensures smooth rotation of high-speed shaft-connected components (such as impellers and main shafts), reduces the risk of equipment damage, and also reduces safety hazards caused by vibration.

[0019] With the help of the positioning mechanism consisting of the connecting frame, positioning rod and hydraulic rod on the right side of the fixed frame, the positioning rod can be driven by the hydraulic rod to engage between the teeth of the transmission gear, so as to quickly lock and fix the drive gear and the main shaft. This design solves the problems of low positioning accuracy and easy slippage of traditional turning equipment, and makes it easy to fix the high-speed shaft stably at the angle required for maintenance, thus improving the convenience of operation.

[0020] The oil reservoir at the top of the fixed frame continuously supplies oil to the drive gear through an oil-absorbing cotton rope. The rotation of the gears achieves uniform lubrication of the meshing surfaces of the transmission gear and the drive gear, reducing tooth surface wear and lowering the maintenance frequency. The oil collection box below the drive gear and transmission gear can collect excess grease, avoiding environmental pollution and resource waste caused by lubricating oil dripping. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the connection between the main shaft and the fixed frame of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection between the main shaft and the drive gear of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection between the drive gear and the transmission gear of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection between the drive gear and the transmission mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the connection between the fixed frame and the connecting frame of this utility model;

[0028] Figure 7 This is a cross-sectional structural diagram of the oil storage tank of this utility model;

[0029] In the picture:

[0030] 11. Drive motor; 12. Gearbox; 13. Spindle; 14. Coupling;

[0031] 131. Flange; 132. Screw; 133. Drive gear; 134. Port; 135. Nut;

[0032] 21. Fixed frame; 22. Drive motor; 23. Drive gear; 24. Through hole; 25. Groove;

[0033] 31. Oil storage tank; 311. Oil-absorbing cotton rope; 32. Oil collection box;

[0034] 41. Connecting frame; 42. Hydraulic rod; 43. Positioning rod. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0036] Please see Figures 1-7 This utility model provides a technical solution: a turning device for a high-speed shaft of a wind turbine, including a drive motor 11, an integrated mounting base welded to the bottom of the drive motor 11, a gearbox 12 disposed on one side of the output end of the drive motor 11, a rotatable main shaft 13 inserted through the gearbox 12, the left end of the main shaft 13 connecting to the output end of the drive motor 11, and the left end of the main shaft 13 connected to the output end of the drive motor 11 via a coupling 14, a flange 131 fixedly fitted on the main shaft 13 and located on the left side of the gearbox 12, a plurality of screws 132 mounted in a circular array on the left side of the flange 131, a drive gear 133 fitted on the left end of the main shaft 13 and fitting against the left side of the flange 131, and a plurality of through-holes 134, the same number as the number of screws 132, arranged in a circular array near the center of the drive gear 133, and the plurality of through-holes 134 on the drive gear 133 respectively Each screw 132 is fitted onto a corresponding screw 132, and a nut 135 is threaded onto one end of the through-hole 134. The drive gear 133 is rigidly connected to the main shaft 13 via the flange 131, screw 132, nut 135, and the main shaft 13, ensuring efficient power transmission and preventing slippage or loosening. At the same time, the surrounding design of the fixed frame 21 enhances the overall structural stability. The fixed frame 21 is mounted on the outside of the drive gear 133, and the middle part of both sides of the fixed frame 21 is set as an opening. Transmission mechanisms are installed at the four corners on the left side of the fixed frame 21. The four sets of transmission mechanisms are arranged in a circular array around the drive gear 133 and mesh with it. Through the meshing of the four sets of circularly arrayed transmission mechanisms with the drive gear 133, a symmetrical and uniform driving force is formed, solving the problem of transmission instability caused by traditional single drive source and ensuring smooth rotation of the high-speed shaft and related components.

[0037] like Figure 4 and Figure 5As shown, the transmission mechanism includes a transmission motor 22 and a transmission gear 23. The transmission motor 22 is installed at the left corner of the fixed frame 21, and the output end of the transmission motor 22 passes through the side wall of the fixed frame 21 and extends into its interior. The transmission gear 23 is fixedly installed at the output end of the transmission motor 22, and the side wall of the transmission gear 23 meshes with the side wall of the drive gear 133. The transmission mechanism adopts a structure in which the transmission motor 22 directly drives the transmission gear 23, resulting in a short power transmission path and rapid response. The four sets of transmission mechanisms are distributed at the corner of the fixed frame 21, forming an encircling mesh with the drive gear 133, further enhancing the symmetry of the driving force and reducing gear meshing impact.

[0038] like Figure 4 and Figure 6 As shown, through holes 24 are provided at the four corners on the right side of the fixed frame 21. A rectangular connecting frame 41 is provided on the right side of the fixed frame 21. Positioning rods 43 are fixedly connected at the four corners on the left side of the connecting frame 41. The four positioning rods 43 are respectively movably inserted into the corresponding through holes 24, and the four positioning rods 43 can extend into the fixed frame 21 and engage between one of the teeth of the corresponding transmission gear 23. Grooves 25 are provided at the middle position of the vertical part on both sides of the fixed frame 21 and the corresponding connecting frame 41. Hydraulic rods 42 are fixedly installed inside the 25. The output ends of the two hydraulic rods 42 are fixedly connected to the middle position of the vertical part on both sides of the connecting frame 41. The hydraulic rods 42 drive the positioning rods 43 to engage with the teeth of the transmission gears 23. This design can quickly achieve precise positioning and stable locking of the main shaft 13, solving the problems of low positioning accuracy and easy displacement of traditional turning equipment. It ensures the stability of the component position during maintenance operations. The hydraulic drive method replaces manual locking, reduces the intensity of operation, improves positioning efficiency, and meets the needs of rapid position adjustment in wind turbine maintenance.

[0039] like Figure 6 and Figure 7 As shown, an oil storage tank 31 is fixedly installed on the top of the fixed frame 21. The bottom end of the oil storage tank 31 extends into the fixed frame 21, and multiple neatly arranged oil-absorbing cotton ropes 311 are inserted through the bottom end of the oil storage tank 31. The bottom end of each oil-absorbing cotton rope 311 contacts the top end of the drive gear 133. An oil inlet is provided at the top of the oil storage tank 31, and a sealing cap is threaded onto the top end of the oil inlet. The oil storage tank 31 continuously supplies oil to the drive gear 133 through the oil-absorbing cotton ropes 311. The gear rotation achieves uniform lubrication of the meshing surface, reduces tooth surface wear, extends the life of transmission components, and solves the problems of untimely and uneven lubrication in traditional equipment.

[0040] like Figure 5 and Figure 6As shown, an oil collection box 32 is fixedly installed on the lower part of the inner wall of the fixed frame 21. The oil collection box 32 is located below the drive gear 133 and the transmission gear 23, and the two sides of the oil collection box 32 are respectively attached to the two sides of the inner wall of the fixed frame 21. The oil collection box 32 collects excess lubricating oil during the transmission process, avoiding grease dripping and causing environmental pollution and resource waste.

[0041] like Figure 1 As shown, the bottom of the fixed frame 21 is provided with an extension plate, and bolts are inserted at each corner of the extension plate. The base of the drive motor 11, the bottom of the gearbox 12, and the bottom of the fixed frame 21 are all on the same horizontal plane. The extension plate at the bottom of the fixed frame 21, together with the bolts, can firmly fix the equipment on the installation foundation. The horizontal plane design of the base of the drive motor 11, the bottom of the gearbox 12, and the bottom of the fixed frame 21 ensures that the overall structure is subjected to balanced forces and reduces vibration displacement during operation.

[0042] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A turning device for the high-speed shaft of a wind turbine generator, characterized in that, include: The drive motor has an integrated mounting base welded to its bottom; The gearbox is located on one side of the output end of the drive motor; The main shaft is inserted into the gearbox from both sides. The left end of the main shaft is connected to the output end of the drive motor, and the left end of the main shaft is connected to the output end of the drive motor through a coupling. The flange is fixedly sleeved on the main shaft and located on the left side of the gearbox. Multiple screws are installed in a circular array on the left side of the flange. The drive gear is sleeved on the left end of the main shaft and fits against the left side of the flange. Near the center of the drive gear, there are openings in a circular array with the same number of screws. The multiple openings on the drive gear are respectively sleeved on the corresponding screws. Each screw has a nut threaded on one end that passes through the opening. A fixed frame is mounted outside the drive gear, and the middle part of both the left and right sides of the fixed frame is set as an opening; The transmission mechanism consists of four parts, which are installed at the four corners on the left side of the fixed frame. The four transmission mechanisms are arranged in a circular array around the drive gear and mesh with it.

2. The turning device for a high-speed shaft of a wind turbine according to claim 1, characterized in that, The transmission mechanism includes a transmission motor and a transmission gear. The transmission motor is installed at the corner on the left side of the fixed frame, and the output end of the transmission motor passes through the side wall of the fixed frame and extends into its interior. The transmission gear is fixedly installed at the output end of the transmission motor, and the side wall of the transmission gear meshes with the side wall of the drive gear.

3. The turning device for a high-speed shaft of a wind turbine according to claim 1, characterized in that, Through holes are provided at the four corners on the right side of the fixed frame. A rectangular connecting frame is provided on the right side of the fixed frame. Positioning rods are fixedly connected at the four corners on the left side of the connecting frame. The four positioning rods are movably inserted into the corresponding through holes, and the four positioning rods can extend into the fixed frame and engage between one of the teeth of the corresponding transmission gear. Grooves are provided at the middle position of the vertical parts on both sides of the fixed frame and the connecting frame. Hydraulic rods are fixedly installed in the two grooves. The output ends of the two hydraulic rods are fixedly connected to the middle position of the vertical parts on both sides of the connecting frame.

4. The turning device for a high-speed shaft of a wind turbine according to claim 1, characterized in that, An oil storage tank is fixedly installed on the top of the fixed frame. The bottom end of the oil storage tank extends into the fixed frame, and multiple neatly arranged oil-absorbing cotton ropes are inserted through the bottom end of the oil storage tank. The bottom end of each oil-absorbing cotton rope contacts the top end of the drive gear. An oil inlet is provided at the top of the oil storage tank, and a sealing cap is threaded onto the top end of the oil inlet.

5. The turning device for a high-speed shaft of a wind turbine according to claim 1, characterized in that, An oil collection box is fixedly installed at a lower position on the inner wall of the fixed frame. The oil collection box is located below the drive gear and the transmission gear, and the two sides of the oil collection box are respectively attached to the two sides of the inner wall of the fixed frame.

6. The turning device for a high-speed shaft of a wind turbine according to claim 1, characterized in that, The bottom of the fixed frame is provided with an extension plate, and bolts are inserted at each corner of the extension plate. The base of the drive motor, the bottom of the gearbox and the bottom of the fixed frame are all on the same horizontal plane.

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