An adjustable caliper-type main bearing hanger for a wind turbine generator set

Abstract

The invention discloses an adjustable caliper type main bearing hanger for a wind turbine generator set, comprising a disk hanger plate and a plurality of hangers, the plurality of hangers are circumferentially distributed on the disk hanger plate and fixed to the disk hanger plate, the hanger seat is provided with a lifting ring, a C-shaped claw and a lock for locking the position of the C-shaped claw, the C-shaped claw is connected to the hanger seat in a radial sliding manner along the disk hanger plate, the lifting ring is fixed to the hanger seat, the C-shaped claw is provided with a slot, the lock is arranged on the hanger seat and extends into the slot. The invention provides an adjustable caliper type main bearing hanger for a wind turbine generator set, which improves the main bearing hoisting efficiency, hoisting safety and main bearing heating efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wind generator installation equipment, in particular to an adjustable caliper type main bearing hanger for a wind generator. Background Art

[0002] The traditional installation method for the main bearing in the main shaft assembly of a wind turbine generator set is to use a circular bearing clamp to hoist the main bearing and use a power frequency column induction heater to heat the bearing. The bearing clamp is installed on the outer ring of the main bearing. The clamp is tightened by tightening the bolts to generate a clamping force, which firmly fixes the clamp and the main bearing together. The use of traditional bearing clamps for hoisting the main bearing has the following disadvantages: 1. The clamp needs to be tightened by multiple bolts, and the installation efficiency is low. 2. Because the clamping force of the clamp is mainly applied by the bolt preload, if the operation is improper, the preload is too small, which may cause the risk of bearing slippage and pose certain safety hazards. 3. Each clamp can only be used for one type of bearing, and the versatility is poor. 4. The heating efficiency of the main bearing is low. The clamp is fixed on the outer ring of the bearing and covers a large area of ​​the outer ring. Without removing the clamp hoist, the main bearing cannot be heated by the medium frequency flexible induction coil heater. Therefore, it is necessary to design an adjustable caliper-type main bearing hanger for a wind turbine generator set to improve the main bearing hoisting efficiency, hoisting safety and main bearing heating efficiency. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides an adjustable caliper type main bearing hanger for a wind turbine generator set, which improves the main bearing hoisting efficiency, hoisting safety and main bearing heating efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An adjustable caliper-type main bearing hanger for a wind turbine generator set comprises a disc hanger plate and a plurality of hangers, wherein the plurality of hangers are circumferentially distributed on the disc hanger plate and fixed to the disc hanger plate, the hanger seat is provided with a lifting ring, a C-shaped claw and a lock for locking the position of the C-shaped claw, the C-shaped claw is connected to the hanger seat by radial sliding connection along the disc hanger plate, the lifting ring is fixed to the hanger seat, the C-shaped claw is provided with a slot, and the lock is arranged on the hanger seat and extends into the slot.

[0006] When using the lifting device in the above technical solution, first unlock the lock, pull out the C-shaped claw, hoist the lifting device as a whole onto the main bearing, push the C-shaped claw inward to clamp the bearing, lower the lock to lock the C-shaped claw, then lift the main bearing, hoist the main bearing into the flexible coil induction heater for heating, and install the main bearing onto the main shaft after heating. The above technical solution can clamp the main bearing through the C-shaped claw, realize the rapid clamping and hoisting of the main bearing, and improve the hoisting safety; the C-shaped claw reduces the circumferential contact area between the lifting device and the main bearing, so that the lifting device does not need to be disassembled during the heating process of the main bearing through the flexible coil magnetic inductor, which greatly improves the heating and efficiency of the main bearing.

[0007] Preferably, the lock buckle comprises a lock plate and a limit screw, the lock plate is provided with an elongated hole, the limit screw passes through the elongated hole on the lock plate and is threadedly connected to the hanger, the lock plate is slidably connected relative to the hanger in the vertical direction through the limit screw, and one end of the lock plate extends into the slot. The structure can realize the locking effect of the lock buckle on the C-shaped claw, and the lock plate can be easily inserted into the slot of the C-shaped claw under the action of gravity to lock the C-shaped claw.

[0008] Preferably, the lock buckle further comprises a telescopic spring for keeping the locking plate in a downward movement trend, and the two ends of the telescopic spring are respectively connected to the locking plate and the hanging seat. The structure can increase the reliability of locking the locking plate.

[0009] Preferably, the slot is arranged on the upper end surface of the C-shaped claw, and the number of the slots is multiple, and the multiple slots are arranged in sequence along the sliding direction of the C-shaped claw. The C-shaped claw is provided with a multi-gear slot, and the gear position of the C-shaped claw can be adjusted with the lock buckle to adapt to the lifting of various main bearings, thereby improving the versatility of the lifting device.

[0010] Preferably, a guiding inclined surface is provided on the end surface of the clamping groove close to the outer side of the disk hanging plate. The structure can prevent the locking plate from being locked when the C-shaped clamping claw moves inward, so that the C-shaped clamping claw can be quickly moved inward and locked.

[0011] Preferably, a square hole is provided on the hanging seat, and the portion of the C-shaped claw passing through the square hole is adapted to the square hole. The structure can reduce the shaking of the C-shaped claw.

[0012] Preferably, the disc hanging plate is provided with a plurality of star screws, which are threadedly connected to the disc hanging plate, and the lower ends of the star screws pass through the disc hanging plate. After the lock buckle locks the C-shaped claw, tightening the star screws on the disc hanging plate can lock the bearing axially, thereby improving the reliability during the hoisting process.

[0013] Preferably, a heat insulating pad is fixed to the inner side of the C-shaped claw.

[0014] Preferably, the thermal insulation pad is made of epoxy resin material, and the locking plate and the C-shaped claw are made of 304 stainless steel.

[0015] Preferably, the lifting ring is a universal lifting ring.

[0016] Preferably, the locking piece is an inverted L-shaped structure, which facilitates unlocking the locking piece.

[0017] Preferably, the suspension seat comprises a fixed block and a lifting block, the fixed block is fixed to the disk suspension plate, the lifting block is connected to the fixed block by sliding in the vertical direction, the lifting ring is fixed to the lifting block, and a locking groove is provided on the C-shaped claw. When the lifting block is pulled up, the lifting block extends into the locking groove, and when the lifting block is put down, the lifting block is separated from the locking groove. The lifting ring is fixed to the lifting block, and when the lifting ring is lifted, the lifting block rises accordingly. After rising to a certain height, the lifting block reaches the limit position, at which time part of the structure of the lifting block is just stuck in the locking groove. At this time, even if the locking plate is accidentally touched, the C-shaped claw will not be unlocked, which can play a role of insurance in the lifting process. After lifting to the position, if the bearing is not fixed in place, the lifting ring is still under stress. At this time, if the locking plate is unlocked rashly, an unexpected situation may also occur. The lifting block can always lock the C-shaped claw when the lifting ring is under stress to prevent the C-shaped claw from loosening, thereby ensuring safety during the installation process.

[0018] Preferably, the C-shaped claw includes a claw body and an inverted L-shaped sliding top block, the sliding top block is connected to the claw body in a radial sliding manner along the disc hanging plate, and the sliding top block is arranged on the inner side of the claw body; the sliding top block is provided with a clamping groove that corresponds to and overlaps the locking groove, and a clamping slope is provided on the end surface of the clamping groove close to the inner side of the disc hanging plate. When the lifting block is pulled up, the lifting block extends into the clamping groove, and the lifting block contacts the clamping slope. The sliding top block can actively clamp the outer wall of the bearing inward when the bearing is hoisted, so that the bearing is more stable during the hoisting process, and the locking mechanism is simple, and no additional manual locking action is required.

[0019] The beneficial effects of the present invention are as follows: (1) the main bearing can be quickly clamped and hoisted, the hoisting efficiency of the main bearing can be improved, and the hoisting safety can be improved at the same time; (2) the heating efficiency of the main bearing can be improved. The main bearing can be heated by a medium-frequency flexible induction coil heater without removing the hoisting device, which greatly improves the heating efficiency of the bearing; (3) the versatility of the hoisting device is improved, so that the bearing hoisting device can meet the hoisting of various main bearings, saving the hoisting device cost required for the assembly of the main shaft assembly; (4) the lifting block can be inserted into the locking groove during the hoisting process to lock the C-shaped claw, which plays a safety role during the hoisting process; (5) the sliding top clamp can actively clamp the outer wall of the bearing inward when the bearing is hoisted, so that the bearing is more stable during the hoisting process, and the locking mechanism is simple and does not require additional manual locking action. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 is a partial cross-sectional view of the present invention;

[0022] Figure 3 is a partial cross-sectional view of Example 3;

[0023] Figure 4 It is a structural schematic diagram of a sliding top tightening block;

[0024] Figure 5 It is a schematic diagram of the structure of the hanger in the present invention when clamping the bearing.

[0025] In the figure: disc hanging plate 1, hanging seat 2, fixing block 2.1, lifting block 2.2, lifting ring 3, C-shaped claw 4, clamping groove 4.1, guiding inclined surface 4.2, locking groove 4.3, claw body 4.4, sliding top block 4.5, clamping groove 4.6, clamping inclined surface 4.7, locking buckle 5, locking plate 5.1, limit screw 5.2, star screw 6, thermal insulation pad 7. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1:

[0028] like Figure 1 and Figure 2 As shown, an adjustable caliper-type main bearing hanger for a wind turbine generator set includes a disk hanger plate 1 and a plurality of hangers 2. The plurality of hangers 2 are circumferentially distributed on the disk hanger plate 1 and fixed to the disk hanger plate 1. The hanger 2 is provided with a lifting ring 3, a C-shaped claw 4 and a lock 5 for locking the position of the C-shaped claw 4. The lifting ring 3 is a universal lifting ring 3. The C-shaped claw 4 is connected to the hanger 2 in a radial sliding manner of the disk hanger plate 1. The hanger 2 is provided with a square hole. The portion of the C-shaped claw 4 that passes through the square hole is adapted to the square hole. The lifting ring 3 is fixed to the hanger 2. The upper end surface of the C-shaped claw 4 is provided with a plurality of slots 4.1. The plurality of slots 4.1 are arranged in sequence along the sliding direction of the C-shaped claw 4.

[0029] The lock buckle 5 includes a lock plate 5.1 and a limit screw 5.2. The lock plate 5.1 is provided with a long hole. The limit screw 5.2 passes through the long hole on the lock plate 5.1 and is threadedly connected to the hanger 2. The lock plate 5.1 is slidably connected relative to the hanger 2 in the vertical direction through the limit screw 5.2, and one end of the lock plate 5.1 extends into the card slot 4.1. The lock plate 5.1 is an inverted L-shaped structure. A heat insulation pad 7 is fixed to the inner side of the C-shaped claw 4. The heat insulation pad is made of epoxy resin material, and the material of the lock plate 5.1 and the C-shaped claw 4 is 304 stainless steel.

[0030] When the lifting device in the above technical solution is used, the lock buckle 5 is first unlocked, the C-shaped claw 4 is pulled outward, the lifting device is hoisted and placed on the main bearing, the C-shaped claw 4 is pushed inward to clamp the bearing, and the lock buckle 5 is lowered to lock the C-shaped claw 4. Figure 5 As shown, the main bearing is then lifted and placed into the flexible coil induction heater for heating. After heating, the main bearing is installed on the main shaft. The above technical solution can clamp the main bearing through the C-shaped clamping claw 4, realize the rapid clamping and hoisting of the main bearing, and improve the hoisting safety; the C-shaped clamping claw reduces the circumferential contact area between the hoist and the main bearing, so that the main bearing does not need to be disassembled during the heating process of the flexible coil magnetic inductor, which greatly improves the heating and efficiency of the main bearing.

[0031] Embodiment 2:

[0032] like Figure 1 and Figure 2 As shown, on the basis of Example 1, the disc hanging plate 1 is provided with a plurality of star screws 6, which are threadedly connected to the disc hanging plate 1, and the lower ends of the star screws 6 pass through the disc hanging plate 1. After the locking buckle 5 locks the C-shaped claw 4, tightening the star screws 6 on the disc hanging plate 1 can lock the bearing axially, thereby improving the reliability during the hoisting process.

[0033] Embodiment 3:

[0034] like Figure 3 and Figure 4 As shown, on the basis of Example 1, the lock buckle 5 also includes a telescopic spring that keeps the lock plate 5.1 moving downward, and the two ends of the telescopic spring are respectively connected to the lock plate 5.1 and the hanger 2. A guide slope 4.2 is provided on the end surface of the slot 4.1 close to the outer side of the disc hanger plate 1. The hanger 2 includes a fixed block 2.1 and a lifting block 2.2, the fixed block 2.1 is fixed to the disc hanger plate 1, the lifting block 2.2 is slidably connected to the fixed block 2.1 along the vertical direction, the lifting ring 3 is fixed to the lifting block 2.2, and the C-shaped claw 4 is provided with a locking groove 4.3, when the lifting block 2.2 is pulled up, the lifting block 2.2 extends into the locking groove 4.3, and when the lifting block 2.2 is put down, the lifting block 2.2 is separated from the locking groove 4.3. The C-shaped clamping claw 4 comprises a clamping claw body 4.4 and an inverted L-shaped sliding top block 4.5, the sliding top block 4.5 is connected to the clamping claw body 4.4 in a radially sliding manner along the disk hanging plate 1, and the sliding top block 4.5 is arranged on the inner side of the clamping claw body 4.4; the sliding top block 4.5 is provided with a clamping groove 4.6 which corresponds to and overlaps with the locking groove 4.3 one by one, and a clamping inclined surface 4.7 is arranged on the end surface of the clamping groove 4.6 close to the inner side of the disk hanging plate 1, and when the lifting block 2.2 is pulled up, the lifting block 2.2 extends into the clamping groove 4.6, and the lifting block 2.2 contacts the clamping inclined surface 4.7. A second spring is arranged between the fixed block 2.1 and the lifting block 2.2 to bring the two closer to each other.

[0035] The lifting ring 3 is fixed on the lifting block 2.2. When the lifting ring 3 is lifted, the lifting block 2.2 rises accordingly. After rising to a certain height, the lifting block 2.2 reaches the limit position. At this time, part of the structure of the lifting block 2.2 is just stuck in the locking groove 4.3. At this time, even if the locking plate 5.1 is accidentally touched, the C-shaped claw 4 will not be unlocked, which can play a role of insurance during the lifting process. After being lifted to the position, if the bearing is not fixed in place, the lifting ring 3 is still under stress. At this time, if the locking plate 5.1 is unlocked rashly, unexpected situations may also occur. The lifting block 2.2 can always lock the C-shaped claw 4 when the lifting ring 3 is under stress to prevent the C-shaped claw 4 from loosening and ensure safety during the installation process. The sliding top block 4.5 can actively clamp the outer wall of the bearing inward when the bearing is lifted, so that the bearing is more stable during the lifting process, and the locking mechanism is simple and does not require additional manual locking action.

[0036] The beneficial effects of the present invention are as follows: (1) the main bearing can be quickly clamped and hoisted, the hoisting efficiency of the main bearing can be improved, and the hoisting safety can be improved; (2) the heating efficiency of the main bearing can be improved. The main bearing can be heated by a medium-frequency flexible induction coil heater without removing the hoisting device, which greatly improves the heating efficiency of the bearing; (3) the versatility of the hoisting device is improved, so that the bearing hoisting device can meet the hoisting of various main bearings, saving the hoisting device cost required for the assembly of the main shaft assembly; (4) the lifting block 2.2 can be inserted into the locking groove 4.3 during the hoisting process to lock the C-shaped claw 4, which plays a safety role during the hoisting process; (5) the sliding top clamp 4.5 can actively clamp the outer wall of the bearing inward when the bearing is hoisted, so that the bearing is more stable during the hoisting process, and the locking mechanism is simple and does not require additional manual locking action.

Claims

1. An adjustable caliper-type main bearing hanger for a wind turbine generator set, characterized in that: The invention comprises a disc hanging plate and a plurality of hanging seats, which are circumferentially distributed on the disc hanging plate and fixed with the disc hanging plate, and the hanging seat is provided with a lifting ring, a C-shaped claw and a locking buckle for locking the position of the C-shaped claw, the C-shaped claw and the hanging seat are slidingly connected along the radial direction of the disc hanging plate, the lifting ring is fixed to the hanging seat, a slot is provided on the C-shaped claw, and the locking buckle is arranged on the hanging seat and extends into the slot; the locking buckle comprises a locking plate and a limit screw, and a long hole is provided on the locking plate; the hanging seat comprises a fixed block and a lifting block, the lifting block is slidingly connected with the fixed block along the vertical direction, the lifting ring is fixed on the lifting block, and a locking groove is provided on the C-shaped claw, and the C-shaped claw comprises a claw body and an inverted L-shaped sliding top clamping block, the sliding top clamping block is provided with a clamping groove which corresponds to and overlaps with the locking groove, a clamping inclined surface is provided on the end surface of the clamping groove close to the inner side of the disc hanging plate, and a second spring is provided between the fixed block and the lifting block to bring the two closer to each other.

2. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1 is characterized in that: The limit screw passes through the long hole on the locking plate and is threadedly connected with the hanging seat. The locking plate is slidably connected relative to the hanging seat along the vertical direction through the limit screw, and one end of the locking plate extends into the card slot.

3. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 2 is characterized in that: The lock buckle also includes a telescopic spring which keeps the locking piece in a downward movement trend, and two ends of the telescopic spring are respectively connected to the locking piece and the hanging seat.

4. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1 is characterized in that: The clamping groove is arranged on the upper end surface of the C-shaped clamping claw, and there are multiple clamping grooves, which are arranged in sequence along the sliding direction of the C-shaped clamping claw.

5. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1, 2, 3 or 4, characterized in that: The hanging seat is provided with a square hole, and the part of the C-shaped claw passing through the square hole is adapted to the square hole.

6. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1, 2, 3 or 4, characterized in that: A heat-insulating pad is fixed on the inner side of the C-shaped claw.

7. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1, 2, 3 or 4, characterized in that: The lifting ring is a universal lifting ring.

8. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 2, 3 or 4, characterized in that: The locking piece is an inverted L-shaped structure.

9. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 1, 2, 3 or 4, characterized in that: The fixed block is fixed to the disc hanging plate. When the lifting block is pulled up, the lifting block extends into the locking groove. When the lifting block is lowered, the lifting block is separated from the locking groove.

10. The adjustable caliper type main bearing hanger for a wind turbine generator set according to claim 9, characterized in that: The sliding clamping block is connected to the claw body in a radial sliding manner along the disc hanging plate, and the sliding clamping block is arranged on the inner side of the claw body; when the lifting block is pulled up, the lifting block extends into the clamping groove, and the lifting block contacts the clamping inclined surface.

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