Angle-adjustable clamping tool for welding fan bracket of wind power gear box
By designing an adjustable clamping fixture, the problems of high cost, quality risks, and poor safety in the welding of wind turbine gearbox fan brackets were solved, achieving efficient and safe bracket welding operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-06
AI Technical Summary
The welding of wind turbine gearbox fan brackets in existing technologies suffers from high costs, potential quality risks, low operational efficiency, and poor safety.
An adjustable clamping fixture was designed. The fan bracket can be fixed at an adjustable angle through a combination of baffle, side plate and fixture bolts. The use of hinge module and round nut simplifies the operation process.
It achieves low-cost, high-safety, and high-efficiency fan bracket welding, applicable to brackets of different specifications, reducing labor costs and improving welding quality and safety.
Smart Images
Figure CN223971127U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind turbine gearbox processing tooling, specifically an adjustable angle clamping tooling for welding wind turbine gearbox fan brackets. Background Technology
[0002] The gearbox of a wind turbine is a crucial component in the conversion of wind energy into electricity. Gears generate significant heat during operation; prolonged exposure to high temperatures accelerates gear wear and reduces the turbine's lifespan. Therefore, gearbox cooling is essential. The cooling system uses circulating lubricating oil or air to remove heat from the gearbox, lowering its temperature to a normal range and protecting both the gears and the turbine's lifespan. High temperatures also reduce lubricating oil viscosity, exacerbating mechanical wear and affecting rotor operation, thus decreasing power generation and impacting wind energy utilization. Gearbox cooling effectively improves wind energy utilization, reduces wear, decreases turbine maintenance frequency, and enhances power generation efficiency.
[0003] In summary, the gearbox cooling system plays a crucial role in the normal operation of wind turbines, protecting the gearbox, extending the unit's lifespan, and improving wind energy utilization. Typically, a high-powered fan is installed above the wind turbine gearbox to reduce its temperature through air circulation. The fan is mounted on a bracket and fixed to the top of the gearbox; the fan brackets are often welded together.
[0004] The technical solution of existing technology 1 is as follows:
[0005] The two fan brackets that need to be welded are fixed in place by using pressure plates before welding.
[0006] The disadvantages of existing technology 1 are:
[0007] 1. When fixing the fan bracket with the pressure plate, one side of the pressure plate needs to be placed on the pad and the other side on the fan bracket. Since the specifications and models of the fan bracket may be different, the height of the pads required will also be different, resulting in higher tooling costs.
[0008] 2. The bracket is fixed by means of a pressure plate. The contact area between the pressure plate and the fan bracket is relatively small. If the pressure is too high when tightening, it is easy to cause local deformation of the bracket and affect the quality of the bracket.
[0009] 3. The two brackets that need to be welded need to be fixed separately, resulting in low clamping efficiency.
[0010] The technical solution of existing technology 2 is as follows:
[0011] The two brackets that need to be welded are fixed by hand.
[0012] The disadvantages of the existing technology 2 are:
[0013] 1. The welding process involves high temperatures, and improper operation can affect the personal safety of workers.
[0014] 2. The manual fixing method requires two workers to operate simultaneously, one to fix the object and the other to weld it, which wastes manpower. Utility Model Content
[0015] This utility model provides an adjustable angle clamping fixture for welding the fan bracket of a wind turbine gearbox. Its purpose is to overcome the shortcomings of the prior art and provide a clamping fixture that is low-cost, highly safe, more adjustable, and more versatile.
[0016] The technical solution adopted by this utility model to solve its technical problem is:
[0017] An adjustable-angle clamping fixture for welding wind turbine gearbox fan brackets, characterized in that:
[0018] The clamping module structure is as follows:
[0019] The baffle is welded and fixed to the inside of the tooling base plate and is perpendicular to the tooling base plate;
[0020] The side plate is fixed to the outside of the tooling base plate and is perpendicular to the tooling base plate. The side plate is parallel to the baffle.
[0021] A round nut is welded and fixed at the position of the through hole in the middle of the side plate. The head of the tooling bolt faces the baffle, and the threaded part passes through the through hole of the side plate and is threaded through the round nut. The tail of the tooling bolt has a rotating handle.
[0022] The bracket is placed on the tooling base plate, the bolt heads of the tooling bolts contact the bracket, and the bracket abuts against the baffle, thus the bracket is clamped and fixed.
[0023] The baffles of the two clamping modules are hinged together by a hinge module.
[0024] The hinge module is:
[0025] Each of the two clamping modules has two annular washers welded to its baffle. The two annular washers fixed by each baffle are located on both sides of the hinge shaft. A tooling bolt passes through the center hole of the hinge shaft and the center holes of the annular washers fixed by the baffles of the two clamping modules. A round nut is screwed onto the tooling bolt and presses against the annular washers. The hinge shaft and the aforementioned annular washers press against each other.
[0026] The outer tooling base plate is welded and fixed at the middle position of the outer side of the tooling base plate. The outer tooling base plate is parallel to the tooling base plate. The side plate is welded and fixed on the outer side of the outer tooling base plate. The side plate is perpendicular to the outer tooling base plate.
[0027] The through holes on the side plate are located in the middle of the side plate.
[0028] The threaded middle section of the handle tool bolt is welded to the tail of the tool bolt, and the round nut is welded to the tail of the handle tool bolt, thus the handle tool bolt becomes a rotating handle.
[0029] The advantages of this utility model are:
[0030] 1. Simple structure, easy to process and manufacture;
[0031] 2. It has strong versatility and can be applied to the welding of fan brackets within a certain range, saving costs;
[0032] 3. The fan bracket that needs to be welded is fixed at an angle within a certain range by means of this utility model, which meets the design requirements and has strong adjustability;
[0033] 4. It can be operated by a single person, effectively saving labor costs and ensuring high safety. Attached Figure Description
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0035] Figure 1 This is a diagram illustrating the effect of using the tooling of this utility model for welding fan brackets;
[0036] Figure 2 for Figure 1 A partial view;
[0037] Figure 3 for Figure 1 The partial view from direction B. Detailed Implementation
[0038] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.
[0039] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0040] like Figure 1 , Figure 2 , Figure 3 As shown:
[0041] This utility model is an adjustable angle clamping fixture for welding the fan bracket of a wind turbine gearbox.
[0042] Figure 1 This is a top view of the tooling during use.
[0043] This fixture consists of two clamping modules that are hinged together.
[0044] Left clamping module:
[0045] The left tooling base plate 1 and the left baffle 2 are fixed by welding. The left baffle 2 is welded to the inner side of the left tooling base plate 1 and is fixed perpendicularly to the left tooling base plate 1.
[0046] The left outer tooling base plate 4 is welded to the middle of the outer side of the left tooling base plate 1. The left outer tooling base plate 4 is parallel to the left tooling base plate 1. The left side plate 5 is welded to the outer side of the left outer tooling base plate 4 and is fixed perpendicularly to the left outer tooling base plate 4. In this way, the left side plate 5 is parallel to the left baffle 2.
[0047] A through hole 51 is pre-drilled in the middle of the left side plate 5, and a round nut 6 is welded to the position of the through hole 51 in the middle of the left side plate 5. The bolt head 71 of the tooling bolt 7 is oriented towards the left baffle 2, and the threaded part passes through the pre-drilled through hole 51 in the middle of the upper part of the left side plate 5, and then passes through the round nut 6. The threaded middle part of the handle tooling bolt 8 is welded to the tail of the tooling bolt 7, and finally the round nut 9 is welded to the tail of the handle tooling bolt 8, thus the handle tooling bolt 8 becomes a rotating handle.
[0048] After everything is installed, place the left bracket 3 to be welded on the left tooling base plate 1. Rotate the tooling bolt 7 by turning the tooling bolt 8. The tooling bolt 7 moves left and right, controlling the extension length of the tooling bolt 7 until the bolt head 71 of the tooling bolt 7 contacts the left bracket 3 to be welded. After the left bracket 3 is under force, it abuts against the left baffle 2, thereby fixing the left bracket 3.
[0049] Right-mounted module:
[0050] The right tooling base plate 10 and the right baffle 11 are fixed by welding. The right baffle 11 is welded to the inner side of the right tooling base plate 10 and is fixed perpendicularly to the right tooling base plate 10.
[0051] The right outer tooling base plate 13 is welded to the middle of the outer side of the right tooling base plate 10. The right outer tooling base plate 13 is parallel to the right tooling base plate 1. The right side plate 14 is welded to the outer side of the right outer tooling base plate 13 and is fixed perpendicularly to the right outer tooling base plate 13. In this way, the right side plate 14 is parallel to the right baffle 11.
[0052] A through hole 141 is pre-drilled in the middle of the right side plate 14, and a round nut 15 is welded to the position of the through hole 141 in the middle of the right side plate 14. The bolt head 1611 of the tooling bolt 16 faces the right baffle 11, and the threaded part passes through the pre-drilled through hole 141 in the middle of the right side plate 14. Then, the bolt passes through the round nut 15. The threaded middle part of the handle tooling bolt 17 is welded to the tail of the tooling bolt 16. Finally, the round nut 18 is welded to the tail of the handle tooling bolt 17. In this way, the handle tooling bolt 17 becomes a rotating handle.
[0053] After all the installation is complete, place the right bracket 12 to be welded on the right tooling base plate 10. By turning the tooling bolt 17, rotate the tooling bolt 16. The tooling bolt 16 moves left and right, controlling the extension length of the tooling bolt 16, until the bolt head 161 of the tooling bolt 16 contacts the right bracket 12 to be welded. After the right bracket 12 is under force, it abuts against the right baffle 11, thereby fixing the right bracket 12.
[0054] The left baffle 2 and the right baffle 11 are hinged by the hinge module 100.
[0055] The hinge module 100 is:
[0056] Annular gaskets 29 and 30 are welded to baffle 2, and annular gaskets 31 and 32 are welded to baffle 11.
[0057] Annular washers 29 and 31 are placed on one side of hinge 200, and annular washers 30 and 32 are placed on the other side of hinge 200.
[0058] The tooling bolt 33 is passed through the center hole 201 of the hinge shaft 200 and the center holes of the four annular washers (annular washers 29, 30, 31, and 32). The round nut 34 is screwed onto the tooling bolt 33. The round nut 34 is tightened so that it presses against the annular washers 32, thereby making the hinge shaft 200 and the four annular washers (annular washers 29, 30, 31, and 32) press against each other, thus fixing the baffle 2 and the baffle 11 together.
[0059] In addition, if the left bracket 3 and right bracket 12 of the fan that need to be welded need to be at a certain angle, the baffle 2 and baffle 11 can be rotated relative to the hinge 200 to form the desired angle, and then the round nut 34 can be tightened. After it is fixed, the subsequent bracket welding work can be carried out.
[0060] Existing methods for welding fan brackets involve either clamping them with pressure plates or manually securing them. Both methods pose risks to the quality of the fan brackets themselves and also create safety hazards for the operators. This invention's fixture allows for the fixing of two fan brackets to be welded at any angle, offering high versatility and allowing for operation by a single person without posing any danger to the operator.
[0061] This utility model tooling can be used for welding fan brackets within a certain size range, eliminating the need to switch tooling back and forth. Furthermore, the connections between fan brackets are not always vertical; in some places, due to factors such as engine compartment space, the connections between fan brackets need to be at a certain angle. This tooling can adjust the angle at any time, eliminating the need to switch tooling back and forth, thus improving efficiency.
[0062] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An adjustable-angle clamping fixture for welding the fan bracket of a wind turbine gearbox, characterized in that: The clamping module structure is that: the baffle is welded and fixed on the inner side of the tooling base plate and is perpendicular to the tooling base plate; the side plate is fixed on the outer side of the tooling base plate and is perpendicular to the tooling base plate, and the side plate is parallel to the baffle; the round nut is welded and fixed at the position of the through hole opened in the middle position of the side plate, the bolt head of the tooling bolt is towards the baffle, the threaded part passes through the through hole of the side plate and is screwed through the round nut; the tail of the tooling bolt has a rotating handle; the bracket is placed on the tooling base plate, the bolt head of the tooling bolt is in contact with the bracket, and the bracket is abutted on the baffle, so that the bracket is clamped and fixed; the baffles of the two clamping modules are hinged by the hinge module.
2. The adjustable angle clamping tool for welding the fan bracket of the wind turbine gearbox according to claim 1, characterized in that: The hinge module is that: the baffle of each of the two clamping modules is welded and fixed with two annular gaskets, the two annular gaskets fixed by each baffle are respectively located on both sides of the hinge shaft, one tooling bolt passes through the center hole of the hinge shaft and the center hole of the annular gasket fixed by the baffle of the two clamping modules respectively, the round nut is screwed on the tooling bolt and abuts against the annular gasket, and the hinge shaft and the above-mentioned annular gasket abut against each other.
3. The adjustable angle clamping tool for welding the fan bracket of the wind turbine gearbox according to claim 1, characterized in that: The outer tooling base plate is welded and fixed on the middle position of the outer side of the tooling base plate, the outer tooling base plate is parallel to the tooling base plate, and the side plate is welded and fixed on the outer side of the outer tooling base plate, and the side plate is perpendicular to the outer tooling base plate.
4. The adjustable angle clamping tool for welding the fan bracket of the wind turbine gearbox according to claim 1, characterized in that: The through hole on the side plate is opened in the middle position of the side plate.
5. The adjustable angle clamping tool for welding the fan bracket of the wind turbine gear box according to claim 1, characterized in that: The threaded middle segment of the handle tooling bolt is welded to the tail of the tooling bolt, and the round nut is welded to the tail of the handle tooling bolt, so that the handle tooling bolt becomes a rotating handle.