A tool for removing a foundation bolt of a wind turbine generator

Abstract

The utility model discloses a kind of foot bolt's dismounting tool of wind turbine generator, it is related to dismounting tool technical field, including shell, sleeve head gear, button, hydraulic line and guide block;The shell side edge is provided with connecting structure, the connecting structure includes button, first clamping block, second clamping block, rotating rod and second spring, the second spring is installed below rotating rod, the button is installed above rotating rod, the first clamping block, second clamping block are installed in rotating rod side edge, driving block, hydraulic rod and hydraulic cylinder linkage, convert hydraulic driving force into sleeve head gear rotary torque, easily cope with bolt corrosion, over-tight problem;Sleeve head gear and heating head sleeve realize " heating-disassembly " integration, heating head concentrated heat breaks down corrosion, without switching tool, shorten operation process.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tools, specifically a tool for disassembling the anchor bolts of a wind turbine generator. Background Technology

[0002] During the operation of wind turbines, the generator, as the core power output component, directly depends on the tightening effect of the anchor bolts on its installation stability. However, wind turbines are mostly deployed in complex environments such as open fields, coastal areas, or plateaus. The anchor bolts are exposed to wind, rain, temperature fluctuations, and salt spray corrosion for a long time, which can easily lead to serious corrosion and thread adhesion. This can cause the bolts to form a strong interlocking state with the mounting base or nut, which greatly hinders the disassembly operation. As a result, the existing anchor bolt disassembly tools have also revealed many limitations. To address this issue, while some patented technologies (such as the "Tower Anchor Bolt Removal Tool" application number CN201220122666.0) offer certain solutions, this tool uses an extended sleeve with an internal hexagonal nut socket at the bottom center and an internal square connecting socket at the top center. The square wrench head of the planetary gear wrench is movably fitted into the internal square connecting socket, allowing the hexagonal nut of the tower anchor bolt to fit into the internal hexagonal nut socket, thus achieving bolt removal. This tool has a simple structure and is easy to operate, improving work efficiency and reducing labor intensity to some extent. However, due to its design principle, its core power still relies on manual operation. Even with the planetary gear labor-saving structure, when the anchor bolts are overtightened due to force imbalance or when corrosion significantly increases the meshing resistance, workers still need to continuously apply significant force, resulting in high labor intensity. This makes it difficult to meet the efficient removal requirements of wind turbine anchor bolts (which are mostly large-sized and highly corroded). Based on this, this solution proposes "a tool for disassembling the anchor bolts of a wind turbine generator" to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a tool for disassembling the anchor bolts of a wind turbine generator, so as to solve the problem that workers still need to continuously apply a large force when using existing equipment in the market as mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tool for disassembling the anchor bolts of a wind turbine generator, comprising a housing, a sleeve gear, a button, hydraulic lines, and a guide block; The outer casing is provided with a connecting structure, which includes a button, a first locking block, a second locking block, a rotating rod, and a second spring. The second spring is installed below the rotating rod, the button is installed above the rotating rod, and the first locking block and the second locking block are installed on the side of the rotating rod.

[0005] As a preferred technical solution of this utility model, the outer shell is composed of upper and lower parts, and the outer shell is fixed by bolts; The above technical solution consists of an upper and lower structure that is fixed together by bolts. This design allows for easy disassembly of the outer shell, facilitating the installation, inspection, and maintenance of core components such as the internal gear, drive block, and hydraulic rod, thus reducing the difficulty and cost of tool maintenance. On the other hand, the modular structure can adapt to the installation requirements of internal components of different specifications, improving the flexibility and versatility of the tool structure. Meanwhile, the bolt fixing ensures the overall connection of the outer shell is stable, guaranteeing the structural reliability of the tool during high-intensity disassembly operations.

[0006] As a preferred technical solution of this utility model, the outer shell is rotatably connected to the sleeve gear, the inner side of the sleeve gear is a through hexagonal bolt structure, the outer side of the sleeve gear is a one-way ratchet structure, the side of the sleeve gear is meshed with the guide tooth block, the guide tooth block is slidably connected to the drive block, the drive block is rotatably connected to the sleeve gear, and a first spring is clamped at the connection between the guide tooth block and the drive block. Using the above technical solution, the sleeve gear rotatably connected to the side of the outer shell has a hexagonal bolt structure that can precisely fit the shape of the wind turbine generator foundation bolts, achieving a tight meshing, avoiding slippage during disassembly, and improving operational stability and efficiency. The outer one-way ratchet structure, in conjunction with the meshing guide tooth block, can limit the rotation direction of the sleeve gear, ensuring that power is transmitted only in the direction of bolt disassembly and preventing reverse rotation failure. Furthermore, the guide tooth block is slidably connected to the drive block and clamped with a first spring. The elastic force of the first spring ensures that the guide tooth block is always tightly engaged with the ratchet of the sleeve gear, ensuring continuous meshing transmission. At the same time, it plays a buffering and reset role when the drive block reciprocates, reducing component impact wear and extending service life. The sliding connection also reduces frictional resistance and improves power transmission efficiency.

[0007] As a preferred technical solution of this utility model, the driving block is rotatably connected to one side of the hydraulic rod, the other end of the hydraulic rod is movably connected to the hydraulic cylinder, the hydraulic cylinder is connected to the hydraulic pipeline, the hydraulic pipeline has a right-angle L-shaped structure, the side of the hydraulic pipeline has an external thread structure, and the hydraulic cylinder is rotatably connected to the outer shell. With the above technical solution, the structure that the driving block is rotatably connected to one side of the hydraulic rod and the other end of the hydraulic rod is movably connected to the hydraulic cylinder can convert the linear driving force output by the hydraulic cylinder into the reciprocating swinging power of the driving block, and then drive the socket gear to rotate through the guide tooth block, so as to realize the rotational disassembly of the anchor bolt. The power transmission is efficient and stable, which can provide sufficient and uniform torque to cope with disassembly difficulties such as bolt rusting and excessive tightening; the hydraulic pipeline adopts a right-angle L-shaped structure, which can flexibly adapt to the internal layout of the tool, reduce space occupation and facilitate connection with an external hydraulic power source, and its side external thread structure can enhance connection sealing performance and stability, prevent hydraulic oil leakage, and ensure the normal pressure of the hydraulic system; the hydraulic cylinder is rotatably connected to the housing, and can also flexibly adjust the angle according to the constraints of the operation space, so that the tool can adapt to the disassembly of anchor bolts at different positions, improving operation flexibility and application scope.

[0008] As a preferred technical solution of the utility model, a handle frame is fixedly connected to the side of the housing, a connection port is opened between the handle frames, a button is slidably connected in the connection port, the bottom of the button is of a hemispherical structure, the bottom of the button is movably connected to one end of a rotating rod, the other end of the rotating rod is fixedly connected to a second spring, the rotating rod is of a "tu"-shaped structure as a whole, one side of the rotating rod is movably connected to a first clamping block, and the other side of the rotating rod is movably connected to a second clamping block; With the above technical solution, the handle frame fixedly connected to the side of the housing provides a stable gripping part for the operator, which is ergonomic and reduces the fatigue of long-time operation; the button is slidably connected in the connection port opened between the handle frames, making the button layout compact and easy to operate; the hemispherical structure at the bottom of the button is movably connected to one end of the rotating rod, which reduces contact friction, makes pressing smoother and force transmission uniform; the "tu"-shaped structure of the rotating rod can stably connect the button, the first clamping block, the second clamping block and the second spring, ensure the coordinated linkage of all components, and improve the operation response speed; the second spring fixed at the other end of the rotating rod can drive the rotating rod, the first clamping block and the second clamping block to reset quickly after the button is pressed, simplify the operation process, and play a buffering and protection role to prolong the service life of the components.

[0009] As a preferred technical solution of the utility model, the first clamping block and the second clamping block are in snap connection with a binding post, the binding post is fixedly connected with an electromagnetic induction coil, the electromagnetic induction coil is embedded and fixed in a heating head, and the binding post is fixedly connected with the heating head; Using the above technical solution, the first and second locking blocks engage with the terminal blocks, enabling quick assembly and disassembly of the terminal blocks. This facilitates wiring, inspection, and replacement of the electromagnetic induction coil, reducing the difficulty of maintaining electrical components. The engaging connection ensures a stable connection of the terminal blocks, preventing them from loosening or falling off due to operational vibrations and ensuring a stable power supply to the electromagnetic induction coil. The electromagnetic induction coil is embedded and fixed inside the heating head, allowing the electromagnetic induction heat generated by the coil to be concentrated and transferred to the heating head, reducing heat loss and improving heating efficiency. The fixed connection between the terminal blocks and the heating head further strengthens the stability of the connection, ensuring reliable operation of the components during heating. This facilitates rapid heat conduction to the anchor bolts, enabling rust removal and loosening, and solving the problem of disassembly due to bolt corrosion and adhesion.

[0010] As a preferred embodiment of this utility model, the sleeve gear is mounted on the top of the heating head, the top of the heating head has a hexagonal bolt structure, and the bottom of the heating head has a hexagonal bolt opening; Using the above technical solution, the sleeve gear is mounted on the top of the heating head, making the two coaxial. When the heating head heats the anchor bolt, the sleeve gear can simultaneously maintain a meshing state with the bolt, realizing an integrated "heating-disassembly" operation without the need to switch tools, shortening the process and improving efficiency. It is especially suitable for severely corroded bolts, avoiding heat loss that affects the disassembly effect. The hexagonal bolt structure at the top of the heating head can precisely match the hexagonal structure on the inner side of the sleeve gear, ensuring the coaxiality and stability of the connection between the two, ensuring stable power transmission and heat conduction. The hexagonal bolt opening at the bottom can directly fit the anchor bolt, achieving a tight fit, allowing heat to be quickly and evenly transferred to the bolt and surrounding connecting parts, effectively breaking up rust and adhesion, reducing disassembly resistance, and adapting to bolts of corresponding specifications, improving heating accuracy.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. Flexible structure and convenient maintenance: The outer shell is spliced ​​on top and bottom and fixed with bolts. It can be disassembled for easy maintenance of core components such as internal gears and drive blocks. It can also be adapted to different specifications of components, taking into account both stability and versatility. The first and second locking blocks are connected to the terminal blocks to realize quick disassembly and assembly of the electromagnetic induction coil, reducing the difficulty of maintaining electrical components. 2. Highly efficient and precise disassembly: The hexagonal structure on the inner side of the sleeve gear is adapted to prevent bolt slippage, while the one-way ratchet on the outer side, together with the guide tooth block, limits the rotation direction, ensuring unidirectional power transmission; the drive block, hydraulic rod, and hydraulic cylinder are linked to convert the hydraulic driving force into the rotational torque of the sleeve gear, easily dealing with bolt corrosion and overtightening problems; the sleeve gear and heating head set realize "heating-disassembly" integration, with the heating head concentrating heat to break down corrosion, eliminating the need to switch tools and shortening the operation process; 3. Stable and durable operation: The first spring between the guide tooth block and the drive block ensures tight meshing and buffered reset, reducing component wear; the right-angle L-shaped design of the hydraulic pipeline adapts to the layout, the external thread prevents leakage, and the hydraulic cylinder can rotate to adapt to the space, improving operational reliability; the hemispherical structure of the button reduces friction, the "T"-shaped linkage of the rotating rod coordinates, the second spring assists in reset, and the handle frame conforms to ergonomics, reducing operator fatigue and extending tool life. Attached Figure Description

[0012] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the heating head and grip frame structure of this utility model; Figure 3 This is a schematic diagram of the grip frame and connection port structure of this utility model; Figure 4 This is a side view of the cross-sectional structure of this utility model; Figure 5 This is a side view of the cross-sectional structure of the heating head of this utility model; Figure 6 This is a schematic diagram of the hydraulic rod and the first spring structure of this utility model; Figure 7 This is a schematic diagram of the structure of the first and second card blocks of this utility model; Figure 8 This is a side view of the cross-sectional structure of the outer shell of this utility model.

[0013] In the diagram: 1. Outer shell; 2. Sleeve gear; 3. Button; 4. Hydraulic pipeline; 5. Heating head; 6. Grip frame; 7. Connecting port; 8. Terminal; 9. Drive block; 10. Hydraulic cylinder; 11. First locking block; 12. Second locking block; 13. Rotating rod; 14. Electromagnetic induction coil; 15. Hydraulic rod; 16. First spring; 17. Guide tooth block; 18. Second spring; 19. Guide block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0015] Please see Figure 1-8The present invention provides a tool for disassembling the anchor bolts of a wind turbine generator. The tool includes a housing 1, a sleeve gear 2, a button 3, a hydraulic pipeline 4, a heating head 5, a handle 6, a connection port 7, a terminal block 8, a drive block 9, a hydraulic cylinder 10, a first locking block 11, a second locking block 12, a rotating rod 13, an electromagnetic induction coil 14, a hydraulic rod 15, a first spring 16, a guide tooth block 17, a second spring 18, and a guide block 19. The outer casing 1 has a connecting structure on its side, which includes a button 3, a first locking block 11, a second locking block 12, a rotating rod 13, and a second spring 18. The second spring 18 is installed below the rotating rod 13, the button 3 is installed above the rotating rod 13, and the first locking block 11 and the second locking block 12 are installed on the side of the rotating rod 13.

[0016] The outer shell 1 adopts a two-part splicing structure, which is fixedly connected by bolts. This design allows for quick disassembly of the outer shell 1, facilitating the installation, inspection, and maintenance of core components such as the internal sleeve gear 2, drive block 9, and hydraulic rod 15, significantly reducing the difficulty and cost of tool maintenance. On the other hand, the splicing structure can flexibly adapt to the assembly requirements of internal components of different specifications, improving the versatility of the tool. At the same time, the bolt fixing ensures that the outer shell 1 is firmly connected during high-intensity disassembly operations, guaranteeing structural reliability. The unidirectional transmission sleeve gear 2 is rotatably connected to the outer shell 1 of the structure. Its inner side is a through-type hexagonal bolt structure, which can accurately adapt to the shape of the wind turbine generator foundation bolt, achieve tight meshing, avoid disassembly slippage, and improve operational stability. The outer side is provided with a unidirectional ratchet structure, which cooperates with the meshing guide tooth block 17 to limit the rotation direction of the sleeve gear 2, ensuring that the power is transmitted only in the direction of bolt disassembly, preventing reverse failure. The guide tooth block 17 is slidably connected to the drive block 9, and a first spring 16 is clamped at the connection. The elastic force of the first spring 16 can keep the guide tooth block 17 in close contact with the ratchet of the sleeve gear 2, ensuring continuous meshing transmission. At the same time, it plays a buffering and reset role when the drive block 9 reciprocates, reducing component impact wear and extending service life. The sliding connection design can also reduce frictional resistance and improve power transmission efficiency. One side of the driving block of the hydraulic drive transmission structure is rotatably connected to the hydraulic rod, the other end of the hydraulic rod is movably connected to the hydraulic cylinder, this structure can convert the linear driving force output by the hydraulic cylinder into the reciprocating swinging power of the driving block, and drive the socket gear to rotate through the guide tooth block, so as to realize the efficient disassembly of the anchor bolt, which can provide sufficient and uniform torque, and easily cope with problems such as bolt rusting and excessive tightening. The hydraulic pipeline is designed as a right-angle L-shaped structure, which can flexibly adapt to the internal layout of the tool, reduce space occupation, and is convenient to connect with an external hydraulic power source; its side is provided with an external thread structure, which can enhance connection sealing and stability, prevent hydraulic oil leakage, and ensure stable pressure of the hydraulic system. In addition, the hydraulic cylinder is rotatably connected to the housing, which can flexibly adjust the angle according to the constraints of the operation space, and improve the adaptability of the tool to anchor bolts at different positions; The grip frame is fixedly connected to the side of the housing of the ergonomic operation structure, which provides the operator with an ergonomic holding part and reduces the fatigue of long-time operation; a connection port is opened between the grip frames, in which a slidingly connected button is arranged, with compact layout and easy operation. The bottom of the button is a hemispherical structure, which is movably connected to one end of the rotating rod, reducing contact friction, making the pressing action smooth and force transmission uniform; the rotating rod is in a "soil"-shaped structure as a whole, which can stably connect the button, the first clamping block, the second clamping block and the second spring, ensure the coordinated linkage of all components and improve the operation response speed. The second spring fixed at the other end of the rotating rod can drive the rotating rod and the related clamping blocks to reset quickly after the button is pressed, simplifying the operation process, and playing a buffer protection role at the same time to extend the service life of the components; The first clamping block and the second clamping block of the electromagnetic heating linkage structure are in snap connection with the binding post, so as to realize quick disassembly and assembly of the binding post, facilitate the wiring, maintenance and replacement of the electromagnetic induction coil, reduce the maintenance difficulty of electrical components, and the snap connection ensures that the binding post is connected stably under operation vibration, avoiding loosening and falling off, and ensuring stable power supply. The electromagnetic induction coil is embedded and fixed in the heating head, so that the electromagnetic induction heat is intensively transferred to the heating head, reducing heat loss and improving heating efficiency; the binding post is fixedly connected with the heating head, which further strengthens the structural stability, ensures the reliability of the components during heating, facilitates the rapid conduction of heat to the anchor bolt, realizes heating derusting and loosening, and efficiently solves the problem of bolt rust adhesion; The integrated heating-disassembly structural sleeve gear 2 is fitted over the top end of the heating head 5 to arrange the two coaxially. When the heating head 5 heats the anchor bolt, the sleeve gear 2 can simultaneously maintain an engaged state with the bolt, realizing the integrated "heating-disassembly" operation without tool switching, which greatly shortens the operation process. It is especially suitable for severely rusted bolts, and avoids the influence of heat loss on the loosening effect. The top end of the heating head 5 is provided with a hexagonal bolt structure that can be precisely fitted with the inner hexagonal structure of the sleeve gear 2, so as to ensure the coaxiality and stability of the connection between the two, and guarantee stable power transmission and heat conduction. The bottom of the heating head is provided with a hexagonal bolt opening, which can be directly sleeved on the anchor bolt to achieve close fitting, so that heat can be quickly and evenly transferred to the bolt and surrounding connecting members, efficiently breaking rust adhesion, reducing disassembly resistance, and meanwhile adapting to bolts of corresponding specifications to improve heating accuracy.

[0017] Working principle: When using the anchor bolt disassembly tool for a wind turbine generator, before operation, the bolt-spliced outer casing 1 is first assembled to form a stable cavity, the button 3 on the grip frame 6 is pressed to drive the "T"-shaped rotating rod 13 to link the first clamping block 11 and the second clamping block 12 to engage with the binding post 8, completing the power supply connection of the electromagnetic induction coil 14. After the coil is energized, heat is concentrated and transferred to the heating head 5, meanwhile the bottom of the heating head 5 is aligned and sleeved on the anchor bolt, so that the sleeve gear 2 engages with the bolt through its inner hexagonal structure, and the outer ratchets naturally mesh with the guide tooth block 17; During operation, the electromagnetic induction coil 14 continuously heats, and the heat is conducted to the bolt and connecting members through the heating head 5 to break the rust adhesion; After heating is completed, press the button 3 again, the rotating rod 13 links the first clamping block 11 and the second clamping block 12 to release the locking, then the heating head 5 is removed and installed below the sleeve gear 2. An external hydraulic power source delivers oil to the hydraulic cylinder 10 through the right-angled L-shaped hydraulic pipeline 4, the hydraulic cylinder 10 pushes the hydraulic rod 15 to convert the linear driving force into the reciprocating swing of the driving block 9, the guide tooth block 17 closely meshes with the ratchets of the sleeve gear 2 under the action of the first spring 16, driving the sleeve gear 2 to rotate in the disassembly direction to loosen the bolt via torque, and the hydraulic cylinder 10 can also rotate to adapt to different operation spaces.

[0018] The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall all fall within the protection scope of the present utility model.

Claims

1. A tool for dismantling anchor bolts of a wind turbine generator, comprising a housing (1); characterized in that: A connecting structure is arranged on the side of the housing (1), and the connecting structure comprises a button (3), a first clamping block (11), a second clamping block (12), a rotating rod (13) and a second spring (18). The second spring (18) is installed below the rotating rod (13), the button (3) is installed above the rotating rod (13), and the first clamping block (11) and the second clamping block (12) are installed on the side of the rotating rod (13).

2. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 1, characterized in that, The housing (1) consists of an upper part and a lower part, and the housing (1) is assembled and fixed by bolts.

3. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 2, characterized in that, A socket gear (2) is rotatably connected to the side of the housing (1). The inner side of the socket gear (2) is a penetrating hexagonal bolt structure, and the outer side of the socket gear (2) is a one-way ratchet structure. A guide tooth block (17) is engaged and connected to the side of the socket gear (2), the guide tooth block (17) is slidably connected to a driving block (9), the driving block (9) is rotatably connected to the socket gear (2), and a first spring (16) is sandwiched at the connection between the guide tooth block (17) and the driving block (9).

4. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 3, characterized in that, The driving block (9) is rotatably connected to one side of a hydraulic rod (15), the other end of the hydraulic rod (15) is movably connected to a hydraulic cylinder (10), the hydraulic cylinder (10) is communicated with a hydraulic pipeline (4), the hydraulic pipeline (4) is in a right-angle L-shaped structure, the side of the hydraulic pipeline (4) is of an external thread structure, and the hydraulic cylinder (10) is rotatably connected to the housing (1).

5. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 4, characterized in that, A grip frame (6) is fixedly connected to the side of the housing (1), a connecting port (7) is opened between the grip frames (6), the button (3) is slidably connected in the connecting port (7), the bottom of the button (3) is of a hemispherical structure, the bottom of the button (3) is movably connected to one end of the rotating rod (13), the other end of the rotating rod (13) is fixedly connected to the second spring (18), the rotating rod (13) is entirely in a "earth"-shaped structure, one side of the rotating rod (13) is movably connected to the first clamping block (11), and the other side of the rotating rod (13) is movably connected to the second clamping block (12).

6. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 5, characterized in that, The first clamping block (11) and the second clamping block (12) are in snap-fit connection with a binding post (8), the binding post (8) is fixedly connected with an electromagnetic induction coil (14), the electromagnetic induction coil (14) is embedded and fixed in a heating head (5), and the binding post (8) is fixedly connected with the heating head (5).

7. The tool for dismantling the anchor bolts of a wind turbine generator according to claim 6, characterized in that, The socket gear (2) is sleeved on the top end of the heating head (5), the top end of the heating head (5) is of a hexagonal bolt structure, and a hexagonal bolt opening is opened at the bottom of the heating head (5).

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