Replacing and hoisting tool for variable-pitch speed reducer of wind turbine generator
By designing a lifting workpiece suitable for wind turbines, including adjustable gantry, lifting beam and track system, the problems of low structural reliability, large safety hazards and low versatility during the replacement of the wind turbine pitch reducer are solved, and the problem of low structural reliability, large safety hazards and low versatility is achieved. More efficient and safe lifting process and reduce costs.
Patent Information
- Application Number
- CN202420748072.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-11
AI Technical Summary
During the replacement process of the wind turbine pitch reducer, there are problems such as low structural reliability, large safety hazards, inconvenient operation, high cost and low versatility, especially during the lifting process due to the differences in high altitude operations and different models. and difficulties.
A lifting worker is designed including a first gantry, cross brace, hanging beam, lifting equipment, track and track trolley. It is adapted to different models through a split structure and an adjustable first gantry, and is equipped with a detachable bridge. Plate and track system are lifted using lifting equipment such as hand-pulled hoists or cranes, and long-distance transportation of the cabin top through track trolleys.
It improves operational safety and work efficiency, enhances the versatility of the tooling, reduces the difficulty of lifting the pitch reducer, and improves transportation efficiency through cost-saving lifting equipment and track systems.
Smart Images
Figure CN222181565U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hoisting of a variable pitch reducer of a wind turbine set, in particular to a tool for replacing and hoisting a variable pitch reducer of a wind turbine set. Background Art
[0002] The wind turbine pitch reducer is an important component of the blade pitch control. Due to the uncertainty of the load borne by the blades, the pitch reducer is at risk of overload and damage. Currently, there are generally two ways to replace and hoist the pitch reducer: 1) Use round tubes, fasteners, straps and other temporary scaffolding to hoist the pitch reducer, which has low structural reliability and poses a great safety hazard; 2) Use a large crane for hoisting, which requires a large number of people and leads to high costs.
[0003] The hub hatch and the connection structure between the hub and the nacelle make it difficult to replace the variable pitch reducer. When the variable pitch reducer is damaged and needs to be replaced, it needs to be lifted from the hub hatch to the lifting port on the top of the nacelle. The distance is long and there is high-altitude work, which makes it inconvenient for operators to operate and has low safety. At the same time, due to different wind turbine models, the angle of the hub hatch and the height difference between the hub hatch and the nacelle guardrail are different. Therefore, a lifting tool is only suitable for one model and has low versatility. Utility Model Content
[0004] The utility model aims to solve the deficiencies in the prior art and provides a wind turbine variable pitch reducer replacement lifting tool, which can lift the wind turbine variable pitch reducer from the hub hatch outlet to the cargo lifting outlet on the top of the cabin, thereby improving the safety of operators and work efficiency; at the same time, enhancing the versatility of the tool.
[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a wind turbine variable pitch reducer replacement and lifting tool, comprising a first gantry, a cross brace, a hanging beam, a lifting equipment, a rail trolley and a track; wherein, the first gantry comprises an upper gantry and a lower gantry, the lower gantry is installed on the hatch of the hub, and the upper gantry is installed on the top of the lower gantry; one end of the cross brace is connected to the lower gantry, and the other end of the cross brace is connected to the escalator of the wind turbine cabin; one end of the hanging beam is connected to the top of the upper gantry, and the other end of the hanging beam is connected to the guardrail of the wind turbine cabin, the lifting equipment is slidably installed on the hanging beam, and is used to lift the variable pitch reducer; the track is arranged on the top of the wind turbine cabin, and is located between the escalator opening and the lifting opening at the top of the wind turbine cabin, and the rail trolley is slidably installed on the track, and is used to transport the variable pitch reducer.
[0006] Furthermore, it also includes a second gantry; the second gantry is arranged at the object hanging opening on the top of the cabin.
[0007] Furthermore, a lifting device is also installed on the second gantry for lifting the variable pitch reducer to the rear platform of the wind turbine cabin.
[0008] Furthermore, it also includes a bridge board; the bridge board is detachably installed on the cross brace and is used for workers to stand.
[0009] Furthermore, the lifting equipment is a hand winch or a crane.
[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0011] 1. The utility model can reduce the difficulty of lifting the variable pitch reducer from the hub hatch to the cargo lifting port on the top of the cabin, which can not only improve the safety of operators, but also improve work efficiency;
[0012] 2. The first gantry of the utility model adopts a split structure, which can adjust the height of the lower gantry according to the actual wheel hub hatch angle and the height difference between the wheel hub hatch and the cabin guardrail, and is suitable for different models, which greatly improves the versatility of the first gantry;
[0013] 3. The utility model is equipped with a detachable bridge plate for assembling the tooling body, thus ensuring the safety of the operator;
[0014] 4. The utility model is equipped with tracks and track trolleys, which solves the difficulty of long-distance transportation on the cabin top, reduces the transportation difficulty and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the installation structure of the utility model.
[0016] Figure 2 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with specific embodiments.
[0018] See also Figure 1 to Figure 2 As shown, the wind turbine pitch reducer replacement and lifting tooling provided in this embodiment includes a first gantry 3, a cross brace 4, a bridge plate 5, a hanging beam 6, a lifting device (not shown in the figure), a rail trolley 9, a rail 10 and a second gantry 11;
[0019] Among them, the first gantry 3 includes an upper gantry and a lower gantry, the lower gantry is installed on the hatch of the hub 1, and the upper gantry is installed on the top of the lower gantry; one end of the cross brace 4 is connected to the lower gantry, and the other end of the cross brace 4 is connected to the escalator 7 of the wind turbine cabin, and the bridge plate 5 is detachably installed on the cross brace 4, which is used for operators to stand and assemble the hanging beam 6 and the lifting equipment. After assembly, the bridge plate 5 can be disassembled to transport the variable pitch reducer 2; one end of the hanging beam 6 is connected to the top of the upper gantry, and the other end of the hanging beam 6 is connected to the wind turbine cabin guardrail 8. The lifting equipment is slidably installed on the hanging beam 6 for lifting the variable pitch reducer Machine 2; the track 10 is arranged on the top of the cabin above the elbow 12 of the wind turbine set, and is located between the escalator opening and the hanging opening on the top of the cabin of the wind turbine set, and the track trolley 9 is slidably installed on the track 10 for transporting the variable pitch reducer; the second gantry 11 is arranged at the hanging opening on the top of the cabin, and the second gantry 11 is also equipped with a lifting device, through which the variable pitch reducer 2 is lowered to the cabin tail platform below, and then the cabin crane is used to lift the variable pitch reducer 2 to the basic platform; in addition, the lifting device is a hand winch or a crane, and a hand winch is generally selected, which is installed on the hanging beam 6 through a pulley, which saves costs compared with using a crane.
[0020] The installation process of this utility model is as follows:
[0021] S1.1. Tighten the lower mast of the first mast 3 to the hatch opening of the wheel hub 1 with nuts, and then tighten the upper mast of the first mast 3 to the lower mast of the first mast 3 with bolts;
[0022] S1.2. Fasten one end of the cross brace 4 to the lower mast of the first mast 3 with bolts, and fasten the other end to the escalator 7 with a cross fastener;
[0023] S1.3, clamp the bridge plate 5 on the cross brace 4;
[0024] S1.4. The operator steps on the bridge plate 5 and fastens one end of the hanging beam 6 to the first gantry 3 with bolts, and fastens the other end to the cabin guardrail 8 with U-bolts;
[0025] S1.5. Lock the second gantry 11 to the top surface of the cabin with bolts;
[0026] S1.6. Lay the track 10 from the escalator opening to the cargo hanging opening on the top of the cabin and place the track trolley 9 on the track 10.
[0027] Since the lifting sequence of the damaged variable pitch reducer 2 is opposite to that of the new variable pitch reducer 2 to be installed, the lifting sequence of the damaged variable pitch reducer 2 is taken as an example here to illustrate that the process of lifting the variable pitch reducer using the utility model is as follows:
[0028] S2.1. Install a hand chain hoist on the lifting beam 6, and use the hand chain hoist to lift the damaged variable pitch reducer 2 out of the hub 1 and lift it to the top of the cabin near the escalator 7;
[0029] S2.2. Place the variable pitch reducer 2 on the rail trolley 9 by means of a hand chain hoist, and push the rail trolley 9 and the variable pitch reducer 2 to the hanging opening on the top of the cabin;
[0030] S2.3. Install a hand chain hoist on the second gantry 11, and use the hand chain hoist to lower the variable pitch reducer 2 to the rear platform of the nacelle below, and then use the nacelle crane to lift the variable pitch reducer 2 to the basic platform.
[0031] The embodiments described above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, all changes made based on the shape and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A wind turbine variable pitch reducer replacement and lifting tool, characterized by: It includes a first gantry, a cross brace, a hanging beam, a lifting equipment, a rail trolley and a track; wherein, the first gantry includes an upper gantry and a lower gantry, the lower gantry is installed on the hatch of the wheel hub, and the upper gantry is installed on the top of the lower gantry; one end of the cross brace is connected to the lower gantry, and the other end of the cross brace is connected to the escalator of the wind turbine cabin; one end of the hanging beam is connected to the top of the upper gantry, and the other end of the hanging beam is connected to the guardrail of the wind turbine cabin, the lifting equipment is slidably installed on the hanging beam, and is used to lift the variable pitch reducer; the track is arranged on the top of the wind turbine cabin, and is located between the escalator opening and the lifting opening on the top of the wind turbine cabin, and the rail trolley is slidably installed on the track, and is used to transport the variable pitch reducer.
2. The wind turbine variable pitch reducer replacement and lifting tool according to claim 1 is characterized by: It also includes a second gantry; the second gantry is arranged at the object hanging opening on the top of the cabin.
3. The wind turbine variable pitch reducer replacement and lifting tool according to claim 2 is characterized by: The second gantry is also equipped with a lifting device for lifting the variable pitch reducer to the rear platform of the wind turbine cabin.
4. The wind turbine variable pitch reducer replacement and lifting tool according to claim 1, characterized in that: It also includes a bridge plate; the bridge plate is detachably mounted on the cross brace for workers to stand on.
5. A wind turbine variable pitch reducer replacement and lifting tool according to claim 1 or 3, characterized in that: The lifting equipment is a hand chain hoist or a crane.