Wind power main shaft bearing hoisting device

Abstract

The utility model discloses a wind power main shaft bearing hoisting device, which relates to the technical field of large bearing hoisting and comprises a supporting block, a threaded hole is arranged on the supporting block, a stud pin and a supporting stud are connected with the supporting block through the threaded hole, and a long round hole and a threaded hole are arranged on a pressing block. The pressing block is arranged in the middle of the supporting stud and then fixed through the upper and lower large-cap locking nuts, the clamping bolt is connected with the pressing block and then arranged between the two rollers on the upper row of the bearing, the rotating hanging ring is arranged at the upper end of the supporting stud, and the height of the rotating hanging ring is adjusted through the adjusting nut. The wind power main shaft bearing hoisting device provided by the utility model is simple in structure and convenient to mount, the main shaft bearing heating and tool mounting time is shortened, the overall hoisting efficiency is improved, the hoisting process is stable and controllable, and the hoisting safety is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine generator installation equipment, and in particular to the technical field of large bearing hoisting. Background Technology

[0002] The main shaft system of a doubly-fed wind turbine generator primarily uses double-row spherical roller bearings with lubrication grooves on the outer ring and three lubrication holes. The traditional assembly method involves heating the bearing using a vertical induction heater and then hoisting it using a specialized annular bearing clamp. The bearing clamp is installed on the outer ring of the bearing, and tightening bolts secures the clamp to the bearing. This hoisting method has the following disadvantages: 1. The clamps are expensive, requiring multiple clamp models for different bearing sizes, resulting in high costs. 2. The clamp has numerous bolt connections, leading to low installation efficiency. 3. Pre-tightening the clamp by tightening bolts can cause partial slippage or even the bearing to fall, posing a safety hazard. 4. The annular clamp hoisting points lack height adjustment capabilities; if the lifting chain or slings lack length adjustment tools, it is difficult to control the bearing's level during hoisting. Other methods use caliper-type or hook-type lifting devices for hoisting. However, these methods occupy space because the calipers or hooks grip the bottom of the bearing's outer ring, preventing the bearing from being lowered into the main shaft bearing position in one go due to the bottom retaining ring or cover plate. Furthermore, the calipers or hooks are difficult to disassemble. Therefore, it is necessary to design a low-cost, easy-to-operate, and safe wind turbine main shaft bearing hoisting device to improve the installation efficiency of wind turbine main shaft bearings. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a wind turbine main shaft bearing hoisting device. This device is low in cost, easy to operate, and safe, and can improve the installation efficiency of wind turbine main shaft bearings.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a wind turbine main shaft bearing hoisting device, characterized in that it includes a support block, the support block is provided with a threaded hole, the stud pin and the support stud are connected to the support block through the threaded hole, the pressure block is provided with an elongated hole and a threaded hole, the pressure block is placed in the middle position of the support stud and then fixed by upper and lower large cap locking nuts, the clamping bolt is connected to the pressure block and then placed between two rollers on the upper row of the bearing, the rotating lifting ring is placed at the upper end of the support stud, and the height of the rotating lifting ring is adjusted by adjusting the adjusting nut.

[0005] When using the device described above, the tooling is first pre-assembled together. The stud pin is inserted into the lubrication hole of the double-row spherical roller bearing, and the stud pin is rotated to insert it to a certain depth. Then, the pressure block is placed on the upper end face of the bearing, the upper and lower large cap locking nuts are adjusted, and the pressure block is tightened. At the same time, the clamping bolts of the pressure block are connected and placed between the two rollers inside the bearing to clamp the edge of the outer ring of the bearing. When lifting, the height of the lifting ring is adjusted by rotating the adjusting nut to make the height of the three lifting chains consistent. With the help of a level, the bearing is ensured to be level during the lifting process.

[0006] Preferably, the stud pin is made of high-strength stainless steel and has no threads on one end, making it easy to insert into the bearing lubrication hole.

[0007] Preferably, the pressure block is provided with an elongated hole, and the position of the pressure block on the support stud can be adjusted up and down and back and forth, and it is fixed by the upper and lower large cap locking nuts.

[0008] Preferably, the lifting ring is a rotating lifting ring, which can be adjusted up and down on the support stud by adjusting the nut.

[0009] The hoisting device is adapted to double-row spherical roller bearings with lubrication grooves and three lubrication holes on the outer ring of the wind turbine main shaft. For bearings of the same type but different sizes, no structural design changes are required; only the dimensions of relevant parts need to be changed.

[0010] The hoisting device has a simple structure, is highly practical, has a low cost, is easy to operate, and is safe, which can improve the installation efficiency of wind turbine main shaft bearings. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a front view of the wind turbine main shaft bearing hoisting device of this utility model;

[0013] Figure 2 This is an exploded view of the wind turbine main shaft bearing hoisting device of this utility model;

[0014] Figure 3 This is a schematic diagram illustrating the application of the wind turbine main shaft bearing hoisting device and bearing connection of this utility model;

[0015] Figure 4 This is a schematic diagram illustrating the application of the wind turbine main shaft bearing hoisting device of this utility model;

[0016] In the diagram: 1. Rotating lifting ring, 2. Adjusting nut, 3. Support stud, 4. Upper and lower large cap locking nuts, 5. Support block, 6. Clamping bolt, 7. Pressure block, 8. Stud pin, 9. Lifting chain, 10. Double row spherical roller bearing, 11. Lifting device, 12. Wind turbine main shaft. Detailed Implementation

[0017] like Figure 2 As shown, when using the hoisting device, the tooling needs to be pre-assembled. The stud pin 8 is connected to the support block 5 through the threaded hole. The unthreaded end of the stud pin 8 is inserted into the lubrication hole of the double-row spherical roller bearing 10, and the stud pin 8 is rotated to a certain depth. Then, the pressure block 7 is placed on the upper end face of the bearing. After determining the position, the upper and lower large cap locking nuts 4 are adjusted to fix the pressure block 7. At the same time, the clamping bolts 6 of the pressure block are connected, and the clamping bolts 6 are placed between the two upper rollers of the bearing to clamp the edge of the outer ring of the bearing. Figure 4 As shown, after all three sets of hoisting devices 11 are fixed, the bearing is heated. When hoisting, the height of the rotating lifting ring 1 is adjusted by rotating the adjusting nut 2 to make the height of the three lifting chains consistent. With the help of a level, the bearing is kept horizontal and then the bearing is smoothly put onto the wind turbine main shaft 12.

[0018] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind turbine main shaft bearing hoisting device, characterized in that, It includes a support block with a threaded hole. A stud pin is connected to the support stud through the threaded hole. A pressure block has an oblong hole and a threaded hole. After the pressure block is placed in the middle of the support stud, it is fixed by locking nuts with upper and lower caps. A clamping bolt is connected to the pressure block and then placed between two rollers on the upper row of the bearing. A rotating lifting ring is placed on the upper end of the support stud. The height of the rotating lifting ring is adjusted by adjusting the nut.

2. The wind turbine main shaft bearing hoisting device according to claim 1, characterized in that, The stud pin is made of high-strength stainless steel and has no threads on one end, making it easy to insert into the bearing lubrication hole.

3. The wind turbine main shaft bearing hoisting device according to claim 1, characterized in that, The pressure block has an elongated hole, and its position can be adjusted up and down and back and forth on the support stud. It is then fixed by locking nuts on the upper and lower caps.

4. The wind turbine main shaft bearing hoisting device according to claim 1, characterized in that, The lifting ring is a rotating lifting ring, which can be adjusted up and down on the support stud by adjusting the nut.

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