Main shaft bearing hoisting tool of wind generating set

Abstract

The utility model discloses a wind generating set main shaft bearing hoisting tool and relates to the field of bearing tools, the wind generating set main shaft bearing hoisting tool comprises an annular plate, a plurality of lifting lugs and connecting bolts, the lifting lugs are distributed along the circumferential side of the annular plate at intervals, threaded holes are formed in the circumferential side of the annular plate, and the connecting bolts are in threaded connection with the threaded holes; an abutting head is arranged at the end of the connecting bolt and abuts against the lubricating groove of the bearing. The tool is easy to manufacture and low in cost.

Description

Technical Field

[0001] This application relates to the field of bearing tooling, and in particular to a hoisting tooling for the main shaft bearing of a wind turbine generator set. Background Technology

[0002] During the assembly of wind turbine main shafts, since most double-row spherical roller bearings have large diameters and weights, simply using slings and lifting rings to lift the bearings is not only inconvenient but also poses safety and quality risks. Therefore, it is necessary to design and use special lifting fixtures.

[0003] Reference Figure 1 There exists a spindle bearing comprising a bearing body 20, with a lubrication groove 30 formed on the outer periphery of the bearing body 20. The upper and lower sides of the lubrication groove 30 are both inclined conical surfaces 40. Currently, two types of lifting fixtures are used: one is an adjustable caliper-type spindle bearing lifting tool, and the other is an internal support type lifting tool. Both of these lifting fixtures have complex structures and high manufacturing costs. Therefore, there is an urgent need to design a fixture that is easy to manufacture and has a lower cost. Utility Model Content

[0004] To reduce the cost of tooling, this application provides a hoisting tool for the main shaft bearing of a wind turbine generator set.

[0005] The technical solution for the hoisting fixture for the main shaft bearing of a wind turbine generator provided in this application is as follows:

[0006] A hoisting fixture for the main shaft bearing of a wind turbine generator set includes a ring plate, lifting lugs, and connecting bolts. Multiple lifting lugs are provided and spaced apart along the circumference of the ring plate. Threaded holes are provided on the circumference of the ring plate. The connecting bolts are threadedly connected to the threaded holes. The end of the connecting bolt is provided with an abutment, which abuts against the lubrication groove of the bearing.

[0007] By adopting the above technical solution, during the actual hoisting process, the ring plate is placed around the periphery of the bearing, and then the connecting bolts are threaded into the threaded holes, so that the butt joint of the connecting bolts extends into the lubrication groove of the bearing, and pressure is generated between the butt joint and the bottom wall of the lubrication groove, thereby increasing the friction between the two; the three-legged lifting tool and the lifting lugs cooperate to realize the hoisting work of the bearing; the tooling structure in this application is simple, the components are single, it is easy to manufacture, and the cost is low.

[0008] Preferably, the lifting lug includes a fixed plate and a telescopic plate. The fixed plate is welded and fixed to the ring plate. The fixed plate has a telescopic groove. The telescopic plate and the telescopic groove are slidably adjustable. The telescopic plate has a lifting hole.

[0009] By adopting the above technical solution, the sliding of the telescopic plate within the telescopic groove ensures that the lifting device is not affected by the bearing size when it mates with the lifting hole.

[0010] Preferably, the telescopic plate has a positioning groove, and the fixing plate has multiple positioning holes extending vertically. The positioning bolts pass through the positioning holes and the positioning groove and are fixed with the positioning nuts.

[0011] By adopting the above technical solution, the telescopic plate slides in the telescopic groove. After sliding to the appropriate position, the positioning bolt extends through one end of the positioning hole, then through the positioning groove and out from one end of the positioning hole, and finally is fixed with the positioning nut, thus realizing the locking of the position of the telescopic plate and the fixed plate.

[0012] Preferably, the end of the abutment is provided with an abutment block, and the upper and lower sides of the abutment block are formed with inclined abutment surfaces, which abut against the conical surface of the lubrication groove.

[0013] By adopting the above technical solution, the upper and lower sides of the abutment block form conical surfaces that are compatible with the conical surface. After the abutment block extends into the lubrication groove, the abutment surface abuts against the conical surface, thereby increasing the contact area with the lubrication groove, which can ensure the support force on the bearing and improve the stability of bearing hoisting.

[0014] Preferably, the abutting block and the abutting head are rotatably engaged, and a counterweight is formed on the abutting block, which ensures that the state of the abutting block always adapts to the shape of the lubrication groove.

[0015] By adopting the above technical solution, when the positioning bolt is connected to the threaded hole, if the abutment block rotates synchronously with the positioning bolt, it cannot be guaranteed that the abutment block can enter the lubrication groove in a state that matches the shape of the lubrication groove. Therefore, through the rotational cooperation of the abutment block and the action of the counterweight, the abutment block can always maintain a state that matches the lubrication groove during the rotation of the positioning bolt, and thus smoothly abut against the lubrication groove.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. In actual hoisting operations, the ring plate is first placed around the circumference of the bearing. Then, the connecting bolts are threaded into the threaded holes, allowing the bolt abutments to extend into the bearing's lubrication groove. This creates pressure between the abutments and the bottom wall of the lubrication groove, increasing friction. The hoisting operation of the bearing is completed through the cooperation of the three-legged lifting device and the lifting lugs. The tooling of this application features a simple structure and a single component, making it convenient to manufacture and cost-effective.

[0018] 2. In actual operation, by utilizing the sliding function of the telescopic plate within the telescopic groove, it can be ensured that when the lifting device and the lifting hole are matched, the fitting process is not affected by the difference in bearing size;

[0019] 3. The upper and lower sides of the abutment block are machined with conical surface structures that are adapted to the conical surface. When the abutment block is inserted into the lubrication groove, its conical abutment surface will fit tightly against the conical surface of the inner wall of the lubrication groove. This design not only increases the contact area between the abutment block and the lubrication groove, but also provides a more uniform support force through surface contact, thereby effectively improving the stability during the bearing hoisting process. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the main spindle bearing;

[0021] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0022] Figure 3 This is a partial structural cross-sectional view of Embodiment 1 of this application, mainly illustrating the structure of the abutment joint;

[0023] Figure 4 This is a cross-sectional view of the lifting lug in Embodiment 2 of this application;

[0024] Figure 5 This is a schematic diagram of the overall structure of the connecting bolt in Embodiment 3 of this application.

[0025] Reference numerals: 1. Ring plate; 11. Threaded hole; 2. Lifting lug; 21. Fixing plate; 22. Telescopic plate; 3. Connecting bolt; 31. Abutment joint; 4. Lifting hole; 5. Telescopic groove; 6. Positioning groove; 7. Positioning hole; 8. Positioning bolt; 9. Positioning nut; 10. Abutment block; 101. Abutment surface; 102. Counterweight; 20. Bearing body; 30. Lubrication groove; 40. Conical surface. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 2-5 This application will be described in further detail.

[0027] This application discloses a hoisting fixture for the main shaft bearing of a wind turbine generator set.

[0028] Example 1

[0029] Reference Figure 2 and Figure 3 The hoisting fixture for the main shaft bearing of the wind turbine generator set includes a ring plate 1, lifting lugs 2 and connecting bolts 3. There are three lifting lugs 2, which are welded and fixed to the ring plate 1. The three lifting lugs 2 are evenly distributed along the circumference of the ring plate 1, and lifting holes 4 are provided on the lifting lugs 2.

[0030] The ring plate 1 has a threaded hole 11 on its circumference. The connecting bolt 3 is threadedly connected to the threaded hole 11. The end of the connecting bolt 3 is integrally formed with an abutment 31, which abuts against the bottom wall of the lubrication groove of the bearing.

[0031] In actual hoisting operations, the ring plate 1 is first placed around the circumference of the bearing. Then, the connecting bolt 3 is threaded into the threaded hole 11, allowing the abutment 31 of the connecting bolt 3 to extend into the lubrication groove of the bearing, creating pressure between the abutment 31 and the bottom wall of the lubrication groove, thereby increasing the friction between the two. By cooperating with the lifting lug 2 and the lifting hole 4 of the tripod, the hoisting operation of the bearing can be completed. The tooling of this application has the characteristics of simple structure and single component, which is not only convenient to manufacture, but also low in cost.

[0032] Example 2

[0033] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the lifting lug 2 includes a fixed plate 21 and a telescopic plate 22. The fixed plate 21 is welded to the ring plate 1. A telescopic groove 5 is provided in the fixed plate 21. The telescopic plate 22 and the telescopic groove 5 form a sliding and adjustable fit. The lifting hole 4 is provided on the telescopic plate 22.

[0034] The telescopic plate 22 has a positioning groove 6, and the fixed plate 21 has multiple positioning holes 7 extending vertically through the telescopic groove 5. The positioning holes 7 pass through the telescopic groove 5. The positioning bolt 8 enters from one end of the positioning hole 7 and is inserted into the positioning groove 6, and then extends from the other end of the positioning hole 7, with the extended end threadedly connected to the positioning nut 9.

[0035] The telescopic plate 22 can slide and adjust its position within the telescopic groove 5. Once it has slid to the appropriate position, the positioning bolt 8 is inserted through one end of the positioning hole 7, passes through the positioning groove 6 in sequence, and extends out from the other end of the positioning hole 7. Finally, it is fixed by the positioning nut 9, thus completing the position locking between the telescopic plate 22 and the fixed plate 21. By cooperating with the positioning holes 7 at different positions, the position of the telescopic plate 22 can be adjusted. The sliding function of the telescopic plate 22 within the telescopic groove 5 ensures that the fitting process between the lifting device and the lifting hole 4 is not affected by differences in bearing dimensions.

[0036] Example 3

[0037] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the end of the abutment 31 is rotatably fitted with an abutment block 10, and the upper and lower sides of the abutment block 10 are both formed with inclined abutment surfaces 101, which abut against the conical surface of the lubrication groove.

[0038] A counterweight 102 is formed on the abutment block 10, and the counterweight 102 ensures that the state of the abutment block 10 always adapts to the shape of the lubrication groove.

[0039] The upper and lower sides of the abutment block 10 are machined with conical surface structures that are adapted to the conical surface. When the abutment block 10 is inserted into the lubrication groove, its conical abutment surface 101 will fit tightly with the conical surface of the inner wall of the lubrication groove. By increasing the contact area, it can provide a more uniform support force and effectively improve the stability of the bearing during the hoisting process.

[0040] When the positioning bolt 8 is connected to the threaded hole 11, if the abutment block 10 rotates synchronously with the positioning bolt 8, the abutment block 10 will not be able to enter the groove in a state that matches the shape of the lubrication groove. Therefore, through the rotational fit design of the abutment block 10 and the function of the counterweight 102, it can be ensured that the abutment block 10 always maintains a posture that matches the shape of the lubrication groove during the rotation of the positioning bolt 8, thereby successfully completing the abutment assembly with the lubrication groove.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind turbine main shaft bearing hoisting tool, characterized in that: It includes a ring plate (1), lifting lugs (2) and connecting bolts (3). Multiple lifting lugs (2) are provided and distributed at intervals along the periphery of the ring plate (1). Threaded holes (11) are provided on the periphery of the ring plate (1). The connecting bolts (3) are threadedly connected to the threaded holes (11). The end of the connecting bolts (3) is provided with an abutment (31), which abuts against the lubrication groove of the bearing.

2. A wind turbine main shaft bearing hoisting tool according to claim 1, characterized in that: The lifting lug (2) includes a fixed plate (21) and a telescopic plate (22). The fixed plate (21) is welded and fixed to the ring plate (1). The fixed plate (21) has a telescopic groove (5) inside. The telescopic plate (22) slides and adjusts with the telescopic groove (5). The telescopic plate (22) has a lifting hole (4).

3. The wind turbine main shaft bearing hoisting tooling according to claim 2, characterized in that: The telescopic plate (22) has a positioning groove (6), and the fixing plate (21) has multiple positioning holes (7) through it in the vertical direction. The positioning bolt (8) passes through the positioning hole (7) and the positioning groove (6) and is fixed with the positioning nut (9).

4. The main shaft bearing hoisting tool for a wind turbine generator set according to claim 1, characterized in that: The end of the abutment (31) is provided with an abutment block (10), and the upper and lower sides of the abutment block (10) are formed with inclined abutment surfaces (101), and the abutment surfaces (101) are pressed against the conical surface of the lubrication groove.

5. A wind turbine main shaft bearing hoisting tool according to claim 4, characterized in that: The abutting block (10) is rotatably engaged with the abutting head (31). A counterweight (102) is formed on the abutting block (10), and the counterweight (102) ensures that the state of the abutting block (10) always adapts to the shape of the lubrication groove.

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