A wind turbine unit variable pitch bearing and hub connecting bolt wire breakage extraction tool

Abstract

The utility model discloses a kind of wind turbine generator unit variable pitch bearing and wheel hub connecting bolt broken wire extraction tool, it is related to wind power generator operation and maintenance technical field, including positioning sleeve and fixed rod;Positioning sleeve: the top of outer side is fixed with cylinder ring, the inside of positioning sleeve is opened with eccentric hole, the inside of eccentric hole is inserted with lengthening rod, the bottom of lengthening rod is connected with the middle part of fixed seat top surface, the top of fixed rod is fixedly connected with the middle part of gripper bottom surface, the bottom of fixed rod is connected with the middle part of connecting seat top surface;The wind turbine generator unit variable pitch bearing and wheel hub connecting bolt broken wire extraction tool, by positioning sleeve, eccentric hole and modular lengthening rod design, accurate adaptation narrow deep hole environment, solve the problem that traditional method is difficult to operate in small aperture and bottom fracture position;While using bidirectional cylindrical boss occlusion and anti-slip guiding structure, significantly improve broken wire extraction success rate, avoid secondary damage.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine operation and maintenance technology, specifically a tool for removing broken threads from the connecting bolts of the pitch bearing and hub of a wind turbine generator set. Background Technology

[0002] The frequent breakage of the pitch bearing and hub connecting bolts poses a significant safety hazard to the unit's operation. The broken bolts need to be replaced promptly. However, the pitch bearing and hub connecting bolts are quite long and the bolt hole diameter is small, making it extremely difficult to remove the broken wires.

[0003] The traditional method for removing broken threads involves tapping a reverse thread hole at the broken bolt and then unscrewing the broken bolt using a thread removal tool. However, if the broken bolt of the pitch bearing and hub connecting bolt of the wind turbine is located at the bottom and the bolt hole diameter is small, it is difficult to tap the broken bolt. During the tapping process, the tapping tool is also prone to getting stuck on the bolt, making it even more difficult to remove the broken thread. Therefore, we propose a tooling for removing broken threads from the pitch bearing and hub connecting bolt of a wind turbine. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a tooling for removing broken threads from the connecting bolts of the pitch bearing and hub of a wind turbine generator set. Through the design of a positioning sleeve, eccentric hole, and modular extension rod, it can be precisely adapted to narrow and deep hole environments, solving the problem that traditional methods are difficult to operate in small-diameter holes and at the bottom fracture location. At the same time, the use of a bidirectional cylindrical boss engagement and anti-slip guide structure significantly improves the success rate of broken thread removal and avoids secondary damage, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for removing broken threads from the connecting bolts of the pitch bearing and hub of a wind turbine generator set, comprising a positioning sleeve and a fixing rod;

[0006] Positioning sleeve: A cylindrical ring is fixed to the top of the outer side. An eccentric hole is opened on one side of the inside of the positioning sleeve. An extension rod is inserted into the eccentric hole. The bottom end of the extension rod is connected to the middle of the top surface of the fixed seat. The top end of the fixed rod is fixedly connected to the middle of the bottom surface of the grip rod. The bottom end of the fixed rod is connected to the middle of the top surface of the connecting seat.

[0007] It also includes cylindrical bosses, of which there are two and are respectively installed on both sides of the bottom surface of the connecting seat.

[0008] The positioning sleeve is inserted into the bolt hole, and the top of the extension rod is installed in accordance with the drilling machine. The drilling machine is started to drive the fixed seat at the bottom of the extension rod to rotate and drill a hole in the top surface of the broken bolt. The cylindrical boss on the bottom surface of the connecting seat is inserted into the concave hole on the top surface of the broken bolt, and the handle is rotated to rotate and pick up the broken wire screw rod, and the broken bolt is slowly removed.

[0009] Furthermore, it also includes a locking block, a locking groove, and a limiting ring. There are two locking blocks, which are fixed at both ends of the outer side of the cylindrical ring. The limiting ring has locking grooves on both sides inside. The locking grooves are engaged with the locking blocks. The locking blocks are engaged in the locking grooves and work with the limiting ring to quickly position the positioning sleeve. This makes the two openings on the top surface of the broken bolt symmetrical.

[0010] Furthermore, it also includes a rod groove, an extension rod, and a handle. The rod groove is formed on the left side of the handle, and the extension rod is fixed on the right side of the handle. The right end of the extension rod is inserted into the rod groove. The extension rod on the surface of the handle is inserted into the rod groove to increase the torque of the handle rotation, making it easier to remove the broken bolt.

[0011] Furthermore, it also includes locking bolts and mounting slots. The mounting slots are evenly distributed on the surface of the fixing seat. The locking bolts are installed in the threaded holes in the middle of the mounting slots. The locking bolts pass through the threaded holes in the middle of the mounting slots to fix the drill bit and prevent the drill bit from falling off.

[0012] Furthermore, it also includes a hand guard and a sponge sleeve. The hand guard is fixed to the right side of the grip bar, and there are two sponge sleeves, which are respectively fitted onto the two ends of the outer side of the grip bar. The fitted sponge sleeves, together with the hand guard, can increase the stability of the grip bar and prevent the hand from slipping and causing safety problems.

[0013] Furthermore, it also includes a placement groove and a handle. The placement groove is opened on one side of the top surface of the positioning sleeve, and a handle is fixed inside the placement groove. The handle inside the placement groove makes it convenient for personnel to lift and carry the positioning sleeve.

[0014] Furthermore, it also includes an adhesive pad, which is bonded to the bottom surface of the limiting ring, and the adhesive pad can increase the stability of the limiting ring placement.

[0015] Furthermore, it also includes a sleeve, which is fixedly installed on the outside of the extension rod. The sleeve is slidably installed inside the eccentric hole. Fixing the sleeve on the outside of the extension rod can prevent the problem of displacement during the hole turning process.

[0016] Furthermore, it also includes a positioning post, which has a sliding hole in the middle. The sliding hole in the middle of the positioning post is slidably connected to the outer side of the fixing rod. The positioning post can be locked inside the bolt hole to prevent uneven force when the rotating fixing rod rotates.

[0017] Furthermore, it also includes anti-slip rings, which are evenly distributed on the outer surface of the positioning sleeve. The anti-slip rings can increase the stability of the positioning sleeve during installation.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This tooling for removing broken threads from the pitch bearing and hub connection bolts of the wind turbine generator set has the following advantages:

[0019] 1. Insert the positioning sleeve into the bolt hole, align the top of the extension rod with the drilling machine, start the drilling machine to rotate the fixed seat at the bottom of the extension rod to drill a hole in the top surface of the broken bolt, insert the cylindrical boss on the bottom surface of the connecting seat into the concave hole in the top surface of the broken bolt, and rotate the handle to rotate and pick up the broken wire screw rod, and slowly remove the broken bolt.

[0020] 2. The positioning sleeve is quickly positioned by inserting the locking block into the slot and cooperating with the limiting ring. This makes the two openings on the top surface of the broken bolt symmetrical. The adhesive pad can increase the stability of the positioning ring.

[0021] 3. The extension rod on the grip surface is inserted into the groove to increase the torque of the grip rotation, making it easier to remove broken bolts. The attached sponge sleeve, together with the hand guard, can increase the stability of the grip and prevent the hand from slipping and causing safety problems. Attached Figure Description

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

[0023] Figure 2 This is a schematic diagram of the fixing rod structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the positioning sleeve of this utility model;

[0025] Figure 4 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0026] Figure 5 This utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0027] In the diagram: 1. Positioning sleeve, 2. Cylindrical ring, 3. Eccentric hole, 4. Extension rod, 5. Fixing seat, 6. Fixing rod, 7. Handle, 8. Connecting seat, 9. Cylindrical boss, 10. Locking block, 11. Locking groove, 12. Limiting ring, 13. Rod groove, 14. Extension rod, 15. Handle, 16. Locking bolt, 17. Mounting groove, 18. Hand guardrail, 19. Sponge sleeve, 20. Placement groove, 21. Handle, 22. Adhesive pad, 23. Column sleeve, 24. Positioning column, 25. Anti-slip ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 This embodiment provides a technical solution: a tooling for removing broken threads from the pitch bearing and hub connection bolts of a wind turbine generator set, including a positioning sleeve 1 and a fixing rod 6;

[0030] Positioning sleeve 1: A cylindrical ring 2 is fixed to the top of the outer side. An eccentric hole 3 is opened on one side inside the positioning sleeve 1. An extension rod 4 is inserted into the eccentric hole 3. The bottom end of the extension rod 4 is connected to the middle of the top surface of the fixed seat 5. The top end of the fixed rod 6 is fixedly connected to the middle of the bottom surface of the grip 7. The bottom end of the fixed rod 6 is connected to the middle of the top surface of the connecting seat 8.

[0031] The system includes two cylindrical bosses 9, which are respectively installed on both sides of the bottom surface of the connecting seat 8. The positioning sleeve 1 is inserted into the bolt hole. The top end of the extension rod 4 is installed correspondingly to the drilling machine. The drilling machine is started to drive the fixed seat 5 at the bottom end of the extension rod 4 to rotate and drill a hole in the top surface of the broken bolt. The cylindrical bosses 9 on the bottom surface of the connecting seat 8 are inserted into the concave hole in the top surface of the broken bolt. The handle 7 is rotated to rotate and pick up the broken wire screw, and the broken bolt is slowly removed. The system also includes two locking blocks 10, locking grooves 11, and limiting rings 12. There are two locking blocks 10, which are respectively fixed at both ends of the outer side of the cylindrical ring 2. The limiting ring 12 has locking grooves 11 on both sides inside. The locking grooves 11 are engaged with the locking blocks 10. The 10 is inserted into the slot 11 and, in conjunction with the limiting ring 12, quickly positions the positioning sleeve 1. This ensures that the two openings on the top surface of the broken bolt are centrally symmetrical. The system also includes a rod groove 13, an extension rod 14, and a handle 15. The rod groove 13 is located on the left side of the handle 7, and the extension rod 14 is fixed to the right side of the handle 15. The right end of the extension rod 14 is inserted into the rod groove 13. The extension rod 14 on the surface of the handle 15 is inserted into the rod groove 13 to increase the torque of the handle 7's rotation, making it easier to remove the broken bolt. The system also includes a locking bolt 16 and a mounting groove 17. The mounting groove 17 is evenly distributed on the surface of the fixing seat 5. The locking bolt 16 is installed in the threaded hole in the middle of the mounting groove 17 for locking. Bolt 16 passes through the screw hole in the middle of the mounting groove 17 to fix the drill bit and prevent it from falling off. The system also includes a hand guard 18 and a sponge sleeve 19. The hand guard 18 is fixed to the right side of the grip 7. There are two sponge sleeves 19, each fitted onto the outer ends of the grip 7. The sponge sleeves 19, together with the hand guard 18, increase the stability of the grip 7 and prevent hand slippage that could cause safety issues. The system also includes a placement groove 20 and a handle 21. The placement groove 20 is located on one side of the top surface of the positioning sleeve 1, and a handle 21 is fixed inside the placement groove 20. The handle 21 inside the placement groove 20 facilitates lifting the positioning sleeve 1. Finally, the system includes an adhesive pad 22, which is adhered to the limit... The bottom surface of the positioning ring 12 includes an adhesive pad 22 to increase the stability of the positioning ring 12. It also includes a column sleeve 23, which is fixedly installed on the outside of the extension rod 4. The column sleeve 23 is slidably installed inside the eccentric hole 3. The column sleeve 23 is fixed on the outside of the extension rod 4 to prevent displacement during the rotation process. It also includes a positioning post 24, which has a sliding hole in the middle. The sliding hole in the middle of the positioning post 24 is slidably connected to the outside of the fixing rod 6. The positioning post 24 can be stuck inside the bolt hole to prevent uneven force when the fixing rod 6 is rotated. It also includes an anti-slip ring 25, which is evenly distributed on the outer surface of the positioning sleeve 1. The anti-slip ring 25 can increase the stability of the positioning sleeve 1 during installation.

[0032] The working principle of the tool for removing broken threads from the connecting bolt of the pitch bearing and hub of a wind turbine generator set provided by this utility model is as follows: First, the positioning sleeve 1 is installed inside the bolt hole, the sleeve ring 2 is clamped on the surface of the bolt hole, the clamping block 10 is clamped into the clamping groove 11 to clamp into the limiting ring 12, and the adhesive pad 22 on the bottom surface of the limiting ring 12 can increase the stability of the placement. The locking bolt 16 passes through the screw hole in the middle of the mounting groove 17 to fix the drill bit inside the fixing seat 5 to prevent the drill bit from falling off. The top of the extension rod 4 is installed corresponding to the drilling machine. The drilling machine is started to drive the fixing seat 5 at the bottom of the extension rod 4 to rotate to remove the broken bolt from the top surface. Drilling holes and fixing the column sleeve 23 to the outside of the extension rod 4 can prevent the problem of displacement during the drilling process. Insert the cylindrical boss 9 on the bottom surface of the connecting seat 8 into the concave hole on the top surface of the broken bolt, and rotate the handle 7 to rotate and pick up the broken wire screw rod. Slowly remove the broken bolt. Insert the extension rod 14 on the surface of the handle 15 into the rod groove 13 to increase the torque of the handle 7 rotation, making it easier to pick up the broken bolt. The sleeved sponge sleeve 19, together with the hand guard 18, can increase the stability of the personnel holding the handle 7 to prevent the hand from slipping and causing safety problems. The handle 21 inside the placement groove 20 makes it convenient for personnel to lift the positioning sleeve 1.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tooling for removing broken threads from the bolts connecting the pitch bearing and hub of a wind turbine generator set, characterized in that: Includes a positioning sleeve (1) and a fixing rod (6); Positioning sleeve (1): A cylindrical ring (2) is fixed to the top of the outer side. An eccentric hole (3) is opened on one side inside the positioning sleeve (1). An extension rod (4) is inserted into the eccentric hole (3). The bottom end of the extension rod (4) is connected to the middle of the top surface of the fixed seat (5). The top end of the fixed rod (6) is fixedly connected to the middle of the bottom surface of the grip (7). The bottom end of the fixed rod (6) is connected to the middle of the top surface of the connecting seat (8). It also includes cylindrical bosses (9), of which there are two and are respectively installed on both sides of the bottom surface of the connecting seat (8).

2. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes a locking block (10), a locking groove (11) and a limiting ring (12). There are two locking blocks (10) and they are fixed at both ends of the outer side of the cylindrical ring (2). The limiting ring (12) has a locking groove (11) on both sides inside, and the locking groove (11) is engaged with the locking block (10).

3. The tooling for removing broken threads from the pitch bearing and hub connection bolts of a wind turbine generator set according to claim 1, characterized in that: It also includes a rod groove (13), an extension rod (14) and a grip (15). The rod groove (13) is opened on the left side of the grip (7), and the extension rod (14) is fixed on the right side of the grip (15). The right end of the extension rod (14) is inserted into the rod groove (13).

4. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes locking bolts (16) and mounting grooves (17), the mounting grooves (17) are evenly opened on the surface of the fixing seat (5), and the locking bolts (16) are installed in the threaded holes in the middle of the mounting grooves (17).

5. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes a hand guard (18) and a sponge sleeve (19). The hand guard (18) is fixed to the right side of the grip (7), and there are two sponge sleeves (19) which are respectively fitted onto the two ends of the outside of the grip (7).

6. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes a placement groove (20) and a handle (21). The placement groove (20) is opened on one side of the top surface of the positioning sleeve (1), and the handle (21) is fixed inside the placement groove (20).

7. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 2, characterized in that: It also includes an adhesive pad (22) which is bonded to the bottom surface of the limiting ring (12).

8. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes a sleeve (23), which is fixedly installed on the outside of the extension rod (4) and is slidably installed inside the eccentric hole (3).

9. The tooling for removing broken threads from the connecting bolts between the pitch bearing and the hub of a wind turbine generator set according to claim 1, characterized in that: It also includes a positioning post (24), which has a sliding hole in the middle and is slidably connected to the outer side of the fixing rod (6).

10. The tooling for removing broken threads from the pitch bearing and hub connection bolts of a wind turbine generator set according to claim 1, characterized in that: It also includes anti-slip rings (25), which are evenly distributed on the outer surface of the positioning sleeve (1).

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