Wind driven generator bearing inner ring hoisting device and method

Abstract

The invention discloses a lifting device and method for a bearing inner ring of a wind driven generator. The device comprises a telescopic frame, a supporting rod, a limiting nut, a lifting frame, a single-limb chain and a multi-claw chain. The telescopic frame comprises telescopic rods used for adjusting the diameter of an inscribed circle of the telescopic frame, main force rods and connecting bolts, the main force rods and the telescopic rods are arranged at intervals and are combined into a hexagonal structure capable of being arranged on an inner ring of the bearing in a sleeving mode through the connecting bolts, a boss is arranged on the side face of each main force rod, and round holes penetrating through the main force rods are formed in the bosses; one end of the supporting rod extends out of the round hole in the direction of the bearing inner ring and can make contact with the bearing inner ring, the other end of the supporting rod is connected with the limiting nut, the limiting nut can be sleeved with the boss, and the bearing inner ring can be supported through back-and-forth movement of the supporting rod; the telescopic frame disclosed by the invention can be used for hoisting bearing inner rings with multiple specifications and diameters and is high in universality; the bottom of the inner ring of the bearing is supported by the supporting rod to achieve lifting and horizontal adjustment of the bearing, stability is good, safety is high, and operation is easy.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting the inner ring of a wind turbine bearing, and in particular to a hoisting device and method for the inner ring of a wind turbine bearing. Background Art

[0002] During the bearing assembly process of a wind turbine, hoisting is required. Generally, the upper and lower surfaces of the bearing are clamped and hoisted by means of a clamp, or hoisting holes are reserved on the bearing to meet the hoisting of the bearing.

[0003] However, the bearings used in current large wind turbines are assembled with the inner and outer rings separated. The structural shape of the inner ring is a right trapezoid structure, and it is sleeved on the main shaft. There is no space in its upper and lower structures to clamp and hoist the upper and lower surfaces of the bearing by a common clamp method. On the other hand, considering the stress condition of the bearing during operation, the hoisting bolt holes reserved on the inner ring of the bearing are also cancelled, which also makes it impossible to use the hoisting holes for bearing hoisting. When the inner ring of the bearing is assembled with the main shaft, the bearing space that can be supported under the bearing is also small, only about 25 mm up and down and front and back.

[0004] In addition, with the development of wind turbines, the current specifications and models of various wind turbines have become diversified to meet the market demand. At present, the model specifications of wind turbine units are also diversified, and the bearing specifications of their main shaft components are also different in size. The minimum diameter of the inner ring of the bearing is about 1.4 meters, and the maximum diameter can reach 4 meters. The diameter deviation of the specification size is 2.6 meters. For the hoisting of the inner rings of bearings of various specifications, if a tooling is designed for each specification, while increasing the cost, the general and standardized design requirements of the tooling cannot be achieved.

[0005] The inner ring of the bearing is installed on the main shaft, and its fit is an interference fit. Hoisting is required after heating. This requires that the inner ring of the bearing should be hoisted quickly and smoothly. When the inner ring of the bearing is sleeved into the main shaft, the level of the inner ring of the bearing should be adjusted quickly to avoid the bearing scraping against the main shaft or not being able to be sleeved into the main shaft. If the level of the bearing does not meet the requirements when it is sleeved into the main shaft, it will cause frictional scratches on the main shaft. Seriously, the inner ring of the bearing needs to be disassembled and reinstalled, and the main shaft needs to be replaced. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and proposes a hoisting device and method for the inner ring of a wind turbine bearing. It is designed for the diverse specifications of the inner ring of the bearing, no hoisting holes, the inability to use the clamp mode on the upper and lower surfaces of the bearing, and the small space on the lower bottom surface of the bearing after being assembled with the main shaft. Using this method and device can meet the current hoisting of the inner ring of the bearing, reduce costs, improve hoisting efficiency, have high safety, and strong versatility.

[0007] The object of the present invention is achieved by the following technical solutions: A hoisting device for the inner ring of a wind turbine bearing, comprising a telescopic frame, a support rod, a limit nut, a hanging bracket, a single-chain and a multi-claw chain; the free ends of the multi-claw chains are respectively connected to the top of the hanging bracket; the hanging bracket and the telescopic frame are connected by multiple single-chains; the telescopic frame includes a telescopic rod, a main rod and a connecting bolt for adjusting the inscribed circle diameter of the telescopic frame, the main rod and the telescopic rod are arranged at intervals and combined into a hexagonal structure capable of sleeving on the inner ring of the bearing through the connecting bolt, a boss is provided on the side of each main rod, a round hole penetrating the main rod is provided on the boss, one end of the support rod extends out of the round hole towards the inner ring of the bearing and can be in contact with the inner ring of the bearing, the other end of the support rod is connected to the limit nut, the boss can be sleeved into the limit nut, and the support rod and the main rod form a movable connection and can support the inner ring of the bearing by its reciprocating movement.

[0008] Further, the telescopic rod includes a first connecting telescopic rod, a second connecting telescopic rod and a bolt, the first connecting telescopic rod includes a first pipe sleeve and a first mounting plate, one end of the first pipe sleeve is connected to the first mounting plate, the second connecting telescopic rod includes a second pipe sleeve and a second mounting plate, one end of the second pipe sleeve is connected to the second mounting plate, mounting holes are provided on both the first pipe sleeve and the second pipe sleeve, the diameter of the second pipe sleeve is larger than that of the first pipe sleeve, the first pipe sleeve is sleeved into the second pipe sleeve and the mounting holes of the two are aligned, and the bolt passes through the mounting holes of the first pipe sleeve and the second pipe sleeve to form a detachable connection between the first pipe sleeve and the second pipe sleeve.

[0009] Further, multiple rows of through holes are provided at both ends of the main rod, and the first mounting plate and the second mounting plate are respectively connected to the through holes at both ends of the two main rods through connecting bolts.

[0010] Further, one end of the support rod is provided with a thread for connecting to the limit nut; the other end of the support rod is provided with a concave step, and the upper end surface of the step is used to support the bottom of the inner ring of the bearing.

[0011] Further, the device includes a limit bolt; an annular groove is provided circumferentially on the side surface of the boss, the limit nut is in the shape of a truncated cone, the inner wall of the small head end of the limit nut is provided with a thread, the small head end of the limit nut forms a threaded connection with the threaded end of the support rod, the boss is sleeved into the large head end of the limit nut, and uniformly distributed threaded holes are provided circumferentially on the side surface of the large head end of the limit nut, and the limit bolt passes through the threaded hole of the limit nut and into the annular groove of the boss to form a detachable connection between the support rod, the limit nut and the main rod.

[0012] Further, the hanger includes an inner ring plate, ear plates, rib plates, a first outer ring plate and a second outer ring plate; the first outer ring plate and the second outer ring plate are arranged parallel to each other up and down and are connected together by a plurality of rib plates and a plurality of ear plates, the inner ring sides of the first outer ring plate and the second outer ring plate are connected to the inner ring plate, and lifting holes are provided at both the upper and lower ends of the ear plates.

[0013] Further, the device includes shackles and turnbuckles; lifting lugs are provided at the middle parts of the tops of each main rod, shackles are installed in the lifting holes at the bottom of the hanger, a turnbuckle is installed on each lifting lug of each main rod, and the shackles and the turnbuckles are connected by single-leg chains.

[0014] Further, the fixed end of the multi-claw chain is connected to the main hook of the crane, and the free end of the multi-claw chain is connected to the lifting hole at the top of the hanger through a shackle.

[0015] A method for hoisting the inner ring of a wind turbine bearing, which is realized according to the above-mentioned wind turbine bearing inner ring hoisting device, includes the following steps: S1. According to the specifications of the inner ring of the bearing, make the inner side of the middle part of the main rod of the telescopic frame tangent to the circle, so as to determine the size of the telescopic frame; S2. Adjust the size of the telescopic frame by adjusting the inserted length between the first pipe sleeve and the second pipe sleeve of the telescopic rod in the telescopic frame, so that the overall combination of the telescopic frame is a hexagonal structure that can be sleeved on the inner ring of the bearing; S3. Pull out the support rod of the wind turbine bearing inner ring hoisting device outward so that the end of the support rod is flush with the inner end face of the main rod; S4. Use the hoisting device to sleeve it on the inner ring of the bearing, push the three circumferentially evenly distributed support rods of the device towards the inner ring of the bearing, so that the upper end face of the step of the support rod supports the bottom of the inner ring of the bearing, and the front end face of the support rod contacts the outer ring of the bottom diameter of the inner ring of the bearing; then insert the limit nut and clamp it with the limit bolt in the annular groove of the boss of the main rod; S5. Lift the inner ring of the bearing for a trial lift and adjust the turnbuckle to level the inner ring of the bearing; S6. Lift the inner ring of the bearing and sleeve it on the main shaft from top to bottom. When the bearing is basically in the installation position, check the levelness of the inner ring of the bearing. If it does not meet the preset requirements, continue to adjust the turnbuckle until the preset requirements are met, and then continue to sleeve it down; S7. Install the inner ring of the bearing in place, screw out the limit bolt, and pull out the support rod; S8. Lift the wind turbine bearing inner ring hoisting device away from the installation site.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: The design of the telescopic rack of the present invention can meet the hoisting of the inner rings of bearings with multiple specifications of diameters, and has strong versatility; under the condition of no reserved hoisting holes, the inner ring of the bearing is lifted by supporting the bottom of the bearing with a support rod, and the horizontal adjustment after the bearing is lifted can be carried out, with high safety, good stability, easy operation and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a device for hoisting the inner ring of a wind turbine bearing.

[0018] Figure 2 FIG. is a top view of the structure of a device for hoisting the inner ring of a wind turbine bearing.

[0019] Figure 3 FIG. is a side view of the structure of a device for hoisting the inner ring of a wind turbine bearing.

[0020] Figure 4 is Figure 3 a partial enlarged view of part A in

[0021] Figure 5 FIG. is a top view of the structure of the telescopic rack.

[0022] Figure 6 FIG. is a side view of the structure of the main rod.

[0023] Figure 7 FIG. is a cross-sectional view of the structure of the main rod.

[0024] Figure 8 is Figure 7 a partial enlarged view of part B in

[0025] Figure 9 FIG. is a schematic structural diagram of the first connecting telescopic rod.

[0026] Figure 10 FIG. is a schematic structural diagram of the second connecting telescopic rod.

[0027] Figure 11 FIG. is a schematic structural diagram of the hanging bracket.

[0028] Figure 12 FIG. is a side view of the structure of the support rod.

[0029] Figure 13 FIG. is a schematic structural diagram of pushing the support rod so that the end of the support rod supports the inner ring of the bearing.

[0030] Figure 14 FIG. is a schematic structural diagram of pulling out the support rod so that the end of the support rod is flush with the inner end face of the main rod. DETAILED DESCRIPTION OF THE INVENTION

[0031] The present invention will be further described below in conjunction with specific embodiments.

[0032] Example 1 See Figures 1 to 4 As shown, the hoisting device for the inner ring 10 of the wind turbine bearing provided in this embodiment includes a telescopic frame 1, a support rod 2, a limit nut 3, a limit bolt 4, a hanging bracket 5, a single-chain 6, a multi-claw chain 7, a shackle 8, and a turnbuckle 9; The multi-claw chain 7 is preferably a three-claw chain, and its free ends are respectively connected to the top of the hanging bracket 5; The hanging bracket 5 is connected to the telescopic frame 1 through multiple single-chains 6; See Figure 5 As shown, the telescopic frame 1 includes a telescopic rod for adjusting the inscribed circle diameter of the telescopic frame 1, a main rod 1-1, and a connecting bolt 1-3. There are three main rods 1-1 and three telescopic rods respectively. They are arranged at intervals and combined by the connecting bolt 1-3 into a hexagonal structure that can pass through the main shaft 11 and be sleeved on the inner ring 10 of the bearing; See Figure 6 As shown, a convex platform 1-1-1 is provided on the side of each main rod 1-1. A round hole 1-1-2 penetrating the main rod 1-1 is provided on the convex platform 1-1-1. One end of the support rod 2 extends out of the round hole 1-1-2 towards the inner ring 10 of the bearing and can contact the inner ring 10 of the bearing. The other end of the support rod 2 is connected to the limit nut 3. The convex platform 1-1-1 can be sleeved into the limit nut 3. The support rod 2 and the main rod 1-1 form a movable connection and can support the inner ring 10 of the bearing through its reciprocating movement.

[0033] See Figures 9 to 10 As shown, the telescopic rod includes a first connecting telescopic rod 1-2, a second connecting telescopic rod 1-3, and a bolt 1-4. The first connecting telescopic rod 1-2 includes a first pipe sleeve 1-2-1 and a first mounting plate 1-2-2. One end of the first pipe sleeve 1-2-1 is connected to the first mounting plate 1-2-2. The second connecting telescopic rod 1-3 includes a second pipe sleeve 1-3-1 and a second mounting plate 1-3-2. One end of the second pipe sleeve 1-3-1 is connected to the second mounting plate 1-3-2. Mounting holes a are provided on both the first pipe sleeve 1-2-1 and the second pipe sleeve 1-3-1. The mounting hole a of the first pipe sleeve 1-2-1 is circular in shape, and the mounting hole a of the second pipe sleeve 1-3-1 is elliptical in shape. The diameter of the second pipe sleeve 1-3-1 is larger than that of the first pipe sleeve 1-2-1. The first pipe sleeve 1-2-1 is sleeved into the second pipe sleeve 1-3-1 and their mounting holes a are aligned. The bolt 1-4 passes through the mounting holes a of the first pipe sleeve 1-2-1 and the second pipe sleeve 1-3-1, and a nut 1-5 and a gasket 1-6 are assembled to form a detachable connection between the first pipe sleeve 1-2-1 and the second pipe sleeve 1-3-1; See Figure 6As shown, multiple rows of through holes 1-1-3 are provided at both ends of the main rod 1-1. The first mounting plate 1-2-2 and the second mounting plate 1-3-2 are respectively connected to the through holes 1-1-3 at both ends of the two main rods 1-1 through connecting bolts 1-3, and nuts 1-5 and washers 1-6 are assembled.

[0034] See Figure 12 As shown, one end of the support rod 2 is provided with a thread for connecting with the limit nut 3; the other end of the support rod 2 is provided with a concave step 2-1, and the upper end surface of the step 2-1 is used to support the bottom of the inner ring 10 of the bearing. See Figures 7 to 8 As shown, an annular groove 1-1-4 is provided circumferentially along the side surface of the boss 1-1-1. The limit nut 3 is in the shape of a truncated cone. The inner wall of the small head end of the limit nut 3 is provided with a thread. The small head end of the limit nut 3 is threadedly connected with the threaded end of the support rod 2. The boss 1-1-1 is sleeved into the large head end of the limit nut 3. Threaded holes are evenly arranged circumferentially along the side surface of the large head end of the limit nut 3. The limit bolt 4 passes through the threaded hole of the limit nut 3 and penetrates into the annular groove 1-1-4 of the boss 1-1-1, so as to form a detachable connection among the support rod 2, the limit nut 3 and the main rod 1-1.

[0035] See Figure 11 As shown, the hanging bracket 5 includes an inner ring plate 5-1, ear plates 5-2, rib plates 5-3, a first outer ring plate 5-4 and a second outer ring plate 5-5; the first outer ring plate 5-4 and the second outer ring plate 5-5 are arranged parallel to each other up and down and are connected together through a plurality of rib plates 5-3 and a plurality of ear plates 5-2. The inner ring sides of the first outer ring plate 5-4 and the second outer ring plate 5-5 are connected to the inner ring plate 5-1. Hoisting holes are provided at both the upper and lower ends of the ear plates 5-2. A hanging ear is provided at the middle part of the top of each main rod 1-1. Shackles 8 are installed in the hoisting holes at the bottom of the hanging bracket 5. A turnbuckle 9 is installed on each hanging ear of each main rod 1-1. The shackle 8 and the turnbuckle 9 are connected through a single-leg chain 6. The fixed end of the multi-claw chain 7 is connected to the main hook of the crane, and the free end of the multi-claw chain 7 is connected to the hoisting hole at the top of the hanging bracket 5 through a shackle 8.

[0036] Embodiment 2 The hoisting method of the inner ring 10 of the wind turbine bearing disclosed in this embodiment is realized according to the hoisting device of the inner ring 10 of the wind turbine bearing described in Embodiment 1, and includes the following steps: S1. According to the specification of the inner ring 10 of the bearing, make the inner side of the middle part of the main rod 1-1 of the telescopic frame 1 tangent to the circle, so as to determine the size of the telescopic frame 1; S2. Adjust the inserted length between the first sleeve 1-2-1 and the second sleeve 1-3-1 of the telescopic rod in the telescopic frame 1, and then adjust the size of the telescopic frame 1 so that the entire telescopic frame 1 is combined into a hexagonal structure that can be sleeved on the inner ring 10 of the bearing; S3. Refer to Figure 14 As shown, pull out the support rod 2 of the hoisting device for the inner ring 10 of the wind turbine bearing so that the end of the support rod 2 is flush with the inner end face b of the main rod 1-1; S4. The hoisting device sleeved on the inner ring 10 of the bearing. Refer to Figure 13 As shown, push the three circumferentially evenly distributed support rods 2 of the device forward towards the inner ring 10 of the bearing so that the upper end face of the step 2-1 of the support rod 2 supports the bottom of the inner ring 10 of the bearing, and the front end face of the support rod 2 contacts the outer ring of the bottom diameter of the inner ring 10 of the bearing; then sleeved with the limit nut 3 and clamped the limit bolt 4 in the annular groove 1-1-4 of the boss 1-1-1 of the main rod 1-1; S5. Lift the inner ring 10 of the bearing for trial hoisting, and adjust the turnbuckle 9 to level the inner ring 10 of the bearing; S6. Lift the inner ring 10 of the bearing and sleeve it on the main shaft from top to bottom. When the bearing is basically in the installation position, recheck the level of the inner ring 10 of the bearing. If it does not meet the preset requirements, continue to adjust the turnbuckle 9 until the preset requirements are met, and then continue to sleeve it down; S7. Install the inner ring 10 of the bearing in place, unscrew the limit bolt 4, and pull out the support rod 2; S8. Lift the hoisting device for the inner ring 10 of the wind turbine bearing away from the installation site.

[0037] When hoisting the inner ring 10 of another specification bearing, it is necessary to adjust the inner diameter of the telescopic frame 1. The adjustment steps are as follows: 1) Remove the connecting bolts 1-3 connecting the first connecting telescopic rod 1-2 and the second connecting telescopic rod 1-3 on the telescopic frame 1 to the main rod 1-1, and also remove the bolts 1-4 between the first connecting telescopic rod 1-2 and the second connecting telescopic rod 1-3; 2) Draw a circle according to the specification of the inner ring 10 of the bearing, and determine the position by making the inner sides of the three main rods 1-1 on the telescopic frame 1 tangent to the circle; 3) Install the first connecting telescopic rod 1-2 and the second connecting telescopic rod 1-3 at both ends of each main rod 1-1 respectively. Then connect and install the first connecting telescopic rod 1-2 and the second connecting telescopic rod 1-3 in the middle with bolts 1-4. Make the entire telescopic frame 1 form a hexagonal structure as a whole.

[0038] The above-mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, all changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A wind turbine bearing inner ring hoisting device, characterized in that: It includes a telescopic frame, a support rod, a limiting nut, a hanger, a single-limb chain and a multi-claw chain; the free ends of the multi-claw chain are respectively connected to the top of the hanger; the hanger and the telescopic frame are connected by multiple single-limb chains; the telescopic frame includes a telescopic rod, a main rod and a connecting bolt for adjusting the inscribed circle diameter of the telescopic frame, the main rod and the telescopic rod are arranged at intervals and combined into a hexagonal structure that can be sleeved on the inner ring of the bearing through the connecting bolts, each main rod is provided with a boss on the side, and a circular hole penetrating the main rod is provided on the boss, one end of the support rod extends out of the circular hole toward the inner ring of the bearing and can contact the inner ring of the bearing, the other end of the support rod is connected to the limiting nut, the boss can be sleeved into the limiting nut, the support rod and the main rod form a movable connection, and can support the inner ring of the bearing through its reciprocating movement.

2. A wind turbine bearing inner ring hoisting device according to claim 1, characterized in that: The telescopic rod includes a first connecting telescopic rod, a second connecting telescopic rod and a bolt. The first connecting telescopic rod includes a first pipe sleeve and a first mounting plate. One end of the first pipe sleeve is connected to the first mounting plate. The second connecting telescopic rod includes a second pipe sleeve and a second mounting plate. One end of the second pipe sleeve is connected to the second mounting plate. The first pipe sleeve and the second pipe sleeve are both provided with mounting holes. The diameter of the second pipe sleeve is larger than that of the first pipe sleeve. The first pipe sleeve is inserted into the second pipe sleeve and the mounting holes of the two are aligned. The bolt penetrates the mounting holes of the first pipe sleeve and the second pipe sleeve, so that the first pipe sleeve and the second pipe sleeve form a detachable connection.

3. A wind turbine bearing inner ring hoisting device according to claim 2, characterized in that: A plurality of rows of through holes are arranged at both ends of the main rod, and the first mounting plate and the second mounting plate are respectively connected to the through holes at both ends of the two main rods through connecting bolts.

4. A wind turbine bearing inner ring hoisting device according to claim 1, characterized in that: One end of the support rod is provided with a thread for connecting with a limiting nut; the other end of the support rod is provided with a concave step, and the upper end surface of the step is used to support the bottom of the inner ring of the bearing.

5. A wind turbine bearing inner ring hoisting device according to claim 4, characterized in that: It includes a limiting bolt; an annular groove is provided along the circumference of the side surface of the boss; the limiting nut is in a truncated cone shape; the inner wall of the small head end of the limiting nut is provided with a thread; the small head end of the limiting nut forms a threaded connection with the threaded end of the support rod; the boss is inserted into the large head end of the limiting nut; and evenly distributed threaded holes are provided along the circumference of the side surface of the large head end of the limiting nut; the limiting bolt is inserted into the annular groove of the boss through the threaded hole of the limiting nut, so that a detachable connection is formed between the support rod, the limiting nut and the main rod.

6. A wind turbine bearing inner ring hoisting device according to claim 1, characterized in that: The hanger includes an inner ring plate, an ear plate, a rib plate, a first outer ring plate and a second outer ring plate; the first outer ring plate and the second outer ring plate are arranged in parallel up and down and are connected together through multiple rib plates and multiple ear plates, the inner ring sides of the first outer ring plate and the second outer ring plate are connected to the inner ring plate, and the upper and lower ends of the ear plates are provided with hanging holes.

7. A wind turbine bearing inner ring hoisting device according to claim 6, characterized in that: It includes a shackle and a basket screw; a lifting lug is provided at the top middle part of each main pole, the lifting holes at the bottom of the hanger are installed with shackles, and a basket screw is installed at the lifting lug of each main pole respectively, and the shackle and the basket screw are connected by a single-limb chain.

8. A wind turbine bearing inner ring hoisting device according to claim 6, characterized in that: The fixed end of the multi-claw chain is connected to the main hook of the crane, and the free end of the multi-claw chain is connected to the hanging hole on the top of the hanger through a shackle.

9. A method for hoisting the inner ring of a wind turbine bearing, characterized in that: The wind turbine generator bearing inner ring hoisting device according to any one of claims 1 to 8 comprises the following steps: S1. According to the specifications of the inner ring of the bearing, the middle inner side of the main rod of the telescopic frame is tangent to the circle to determine the size of the telescopic frame; S2, by adjusting the length of the first tube sleeve and the second tube sleeve of the telescopic rod in the telescopic frame, and then adjusting the size of the telescopic frame, the telescopic frame is assembled into a hexagonal structure that can be sleeved on the inner ring of the bearing; S3, pull out the support rod of the wind turbine bearing inner ring hoisting device so that the end of the support rod is flush with the inner end surface of the main rod; S4. Lift the device so that it is sleeved on the inner ring of the bearing, and push the three support rods evenly distributed on the circumference of the device forward toward the inner ring of the bearing, so that the upper end surface of the support rod step is supported on the bottom of the inner ring of the bearing, and the front end surface of the support rod is in contact with the outer ring of the bottom diameter of the inner ring of the bearing; then insert the limiting nut, and clamp it in the annular groove of the main rod boss with the limiting bolt; S5. Test-hang the inner ring of the bearing and adjust the turnbuckle screw to level the inner ring of the bearing; S6. Lift the inner ring of the bearing and put it on the main shaft from top to bottom. When the bearing is basically in the installation position, check the horizontality of the inner ring of the bearing. If it does not meet the preset requirements, continue to adjust the basket screw until it meets the preset requirements, and then continue to put it down; S7. Install the inner ring of the bearing in place, unscrew the limit bolts, and pull out the support rod; S8. Lift the wind turbine bearing inner ring lifting device away from the installation site.

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