Hoisting device for heat treatment of wind power main shaft
By designing a heat treatment hoisting for wind power spindles, using a combined structure of chains and hooks, the problem of quenching medium remaining at the inner hole steps is solved, and better quenching cooling effect and product quality is achieved.
Patent Information
- Application Number
- CN202422101246.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-28
AI Technical Summary
During the quenching and heat treatment and quenching cooling process of wind power spindles, the existing lifting method causes the quenching medium to remain at the inner hole steps, affecting product quality.
A lifting for heat treatment of wind power spindles is designed, including cross beams, lifting devices and support devices. Through the combination of multiple chains and hooks, the spindle can be stably lifted and quickly moved, ensuring that the quenched medium can be discharged quickly.
The lifting structure is simple and easy to operate, which can effectively prevent the quenching medium from remaining at the inner hole steps, and improve the quenching cooling effect and product quality of the spindle.
Smart Images
Figure CN223002592U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of forging heat treatment, and particularly relates to a hoisting device for heat treatment of a wind power main shaft. Background Technique
[0002] The statements in this part only provide background technical information related to the present disclosure, and do not necessarily constitute prior art.
[0003] With the increasing shortage of global energy, wind power, as a clean and renewable energy, has been paid more and more attention by countries around the world. The wind power main shaft is one of the key components of wind turbine equipment, playing an important role in bearing and transmitting energy and converting wind energy into electrical energy. With the large-scale development of wind turbines, the production and manufacturing industry of wind power main shafts has further developed towards large-scale and lightweight directions. The size specifications of wind power main shafts have gradually increased, and the precision requirements have been further improved. In order to reduce the weight of the main shaft itself, large-scale main shafts generally adopt a hollow structure design, and the inner hole usually has a multi-step structure with different diameters.
[0004] During the quenching and cooling process of the main shaft in quenching and tempering heat treatment, currently, the method of using a lifting clamp to hold the shaft body is generally adopted for hoisting. In order to avoid falling off, it is necessary to hold the shaft body near the flange. After hoisting, under the action of gravity, the flange end tilts upward, which causes concave points to form at the inner hole step during the quenching and cooling process. The quenching medium remains here and is not easy to discharge, thus affecting the product quality. Content of the Utility Model
[0005] In order to solve the technical problems existing in the prior art, the utility model provides a hoisting device for heat treatment of a wind power main shaft, which has a simple structure, is easy to operate, stable and safe, can avoid the retention of the quenching medium at the inner hole step, and effectively improves the quenching and cooling effect of the main shaft and the product quality.
[0006] To achieve the above object, the utility model is realized by the following technical solutions:
[0007] A hoisting device for heat treatment of a wind power main shaft includes a cross beam. Lifting devices and supporting devices are respectively connected to the upper and lower sides of the cross beam. The lifting device includes a plurality of first chains. One end of each first chain is fixedly connected to a lifting ring, and the other end is fixedly connected to the cross beam. The supporting device includes a second chain and a third chain respectively connected to both ends of the cross beam. A plurality of hooks are fixedly connected to the end of the second chain, and the horizontal height of the end of the third chain is higher than the horizontal height of the end of the hook.
[0008] Further technical solution, the lifting ring is placed on the vertical central axis of the cross beam.
[0009] Further technical solution, two first chains are provided and are respectively fixedly connected to both ends of the cross beam.
[0010] Further technical solution: The second chain is fixedly connected to one end of the crossbeam and is fixed outside the first chain at this end.
[0011] Further technical solution: The second chain is fixedly connected to multiple hooks through a bracket.
[0012] Further technical solution: The end of the second chain is fixedly connected to the bracket, and hooks are fixedly connected to both sides of the end of the bracket respectively.
[0013] Further technical solution: The bracket is fixed laterally.
[0014] Further technical solution: The bracket and the hooks on both sides together form a herringbone structure.
[0015] Further technical solution: The third chain is fixedly connected to the other end of the crossbeam and is fixed outside the first chain at this end.
[0016] Further technical solution: The third chain is in a ring structure.
[0017] Advantages of the present utility model:
[0018] The structure of the present utility model is simple, with low cost and easy operation. It effectively combines the special shape of the wind power spindle. When the spindle is taken out of the furnace for quenching, the hook lifts the lower side of the spindle flange, the long lower chain is sleeved on the small head end, and the spindle is lifted. It can achieve rapid movement and large-amplitude shaking after being immersed in the quenching medium. Moreover, one end of the flange of the spindle axis is slightly lower than the small head end, and each step of the inner hole is in an inclined plane state. After the quenching and cooling is completed, the quenching medium can be quickly discharged and will not remain in the inner hole, effectively improving the quenching and cooling effect and comprehensive performance of the spindle. Description of the drawings
[0019] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.
[0020] Figure 1 It is a schematic structural diagram of the hoisting in the embodiment of the present utility model;
[0021] Figure 2 It is a side view in the A direction of the hoisting in the embodiment of the present utility model.
[0022] Wherein, 1 - lifting ring, 2 - first chain, 3 - crossbeam, 4 - second chain, 5 - third chain, 6 - bracket, 7 - hook. Detailed implementation manners
[0023] The following further describes the present utility model in conjunction with the drawings and specific embodiments.
[0024] As Figure 1 shown, an embodiment of the present utility model provides a hoisting device for heat treatment of a wind power main shaft, which includes a cross beam 3. Lifting devices and supporting devices are respectively connected to the upper and lower sides of the cross beam 3. The lifting device includes a plurality of first chains 2. One end of each first chain 2 is fixedly connected to a lifting ring 1, and the other end is fixedly connected to the cross beam 3. The supporting device includes a second chain 4 and a third chain 5 respectively connected to both ends of the cross beam 3. A plurality of hooks 7 are fixedly connected to the end of the second chain 4, and the horizontal height of the end of the third chain 5 is higher than the horizontal height of the end of the hook 7.
[0025] In this embodiment, the lifting device is fixedly connected to the upper side of the cross beam 3, wherein the lifting ring 1 is arranged on the vertical central axis of the cross beam 3 and is the same as the vertical central axis of the cross beam 3.
[0026] In some embodiments, the cross beam assembly can be made of low alloy high strength structural steel plates, such as Q355.
[0027] The present utility model only gives examples, which can be flexibly selected according to actual situations and are not specifically limited.
[0028] In some embodiments, two first chains 2 are arranged and are respectively fixedly connected to both ends of the cross beam 3 at a certain distance inward from the edge. The other ends of the two first chains 2 are both fixedly connected to the lifting ring 1. That is to say, the first chains 2 at both ends are inclined from both ends of the cross beam 3 towards the central axis and are fixed to the lifting ring 1 on the central axis, forming a stable hoisting structure, which helps to evenly distribute the weight during hoisting and prevent tilting or deviation.
[0029] In some embodiments, the first chain 2 can be fixed to both ends of the cross beam 3 by welding for long-term use; bolt holes can also be reserved at both ends of the cross beam 3, and the first chain 2 is fixed to the cross beam 3 by bolts and nuts, which is convenient for disassembly and replacement; lifting lugs can also be welded at both ends of the cross beam 3, and the first chain 2 is fixed to the lifting lugs by pins or hooks, which is simple to install.
[0030] In some embodiments, the first chain 2 can be fixed to the lifting ring 1 by welding, which can ensure the stability and safety of the connection; a loop can also be provided at the end of the first chain 2, and the lifting ring 1 passes through the loop and is closed to form a fixed connection, which is simple to install and convenient for disassembly; bolt holes can also be reserved on the lifting ring 1, and the first chain 2 is fixed to the lifting ring 1 by bolts and nuts, which is convenient for disassembly and maintenance.
[0031] In this embodiment, the second chain 4 is fixedly connected to one end of the cross beam 3, and the second chain 4 is fixed on the outside of the first chain 2 at this end. The second chain 4 is fixedly connected to a plurality of hooks 7 through a bracket 6. As Figure 2 shown, specifically: the end of the second chain 4 is fixedly connected to the bracket 6, and hooks 7 are respectively fixedly connected to both sides of the end of the bracket 6. The bracket 6 and the hooks 7 on both sides together form a herringbone structure.
[0032] In some embodiments, the bracket can be made of low-alloy high-strength structural round steel, such as Q355. The present utility model only gives examples, and can be flexibly selected according to actual situations without specific limitations.
[0033] Furthermore, the bracket 6 includes a rectangular main body. The top end of the rectangular main body is a smooth arc curve, and the end is a straight edge perpendicular to the long side of the rectangular main body. The herringbone structure formed by the bracket 6 and the hooks 7 on both sides can effectively disperse the load and stress, improve the overall load-bearing capacity and stability, and ensure that the force is evenly distributed during hoisting, and it is not easy to deform or break; at the same time, the hooks are fixed at the end of the bracket 6, and the hooks on both sides form a certain angle with the long sides of both sides of the rectangular main body of the bracket 6 and are distributed in a herringbone shape, which can firmly grasp the hoisted object and prevent it from sliding or rotating during hoisting, ensuring the stable position of the hoisted object.
[0034] Furthermore, hooks are respectively fixedly connected to both sides of the end of the bracket 6. The hook includes a straight section and a hook body fixed at its end. The hook body is the main part of the hook, usually a bent metal rod with a certain curvature so as to be able to hook or fix the wind power main shaft. The straight section is the part where the hook is connected to the bracket 6 and is used to fix the hook on the bracket 6.
[0035] The straight section forms a certain angle with the long side of the rectangular main body of the bracket 6 fixed above it, and this angle is fixed and unchanged. The fixed angle helps to optimize the force distribution between the hook and the bracket 6. By setting an appropriate angle, the force on the hook can be made more uniform, reducing the deformation of the hook or the damage of the bracket 6 that may be caused by excessive local stress.
[0036] Furthermore, the second chain 4 is fixedly connected to the center position of the top end of the bracket 6, and the bracket 6 is fixed laterally. That is to say, the side of the rectangular main body of the bracket 6 faces the opposite third chain 5, so as to place the wind power main shaft between the second chain 4 and the third chain 5. One side of the wind power main shaft is fixed with the bracket 6 and the hook 7, and the other side is fixed with an annular chain, which plays a role of supporting and fixing when hoisting.
[0037] In this embodiment, the third chain 5 is fixedly connected to the other end of the crossbeam, and the third chain 5 is fixed outside the first chain 2 at this end and is fixedly opposite to the second chain 4. The third chain 5 is in a ring structure, and the ring-structured third chain 5 can tightly sleeve one end of the wind power main shaft, thereby providing a stable fixing and supporting effect and preventing the wind power main shaft from displacing or shaking during the hoisting process.
[0038] The relative hooks 7 have a certain drop in height compared to the lower end of the third chain 5. That is to say, the horizontal height of the end of the third chain 5 is higher than the horizontal height of the end of the hook 7. When the wind power main shaft is lifted, the flange end of the central axis of the main shaft is slightly lower than the small head end, and each step of the inner hole is in an inclined plane state. After the quenching and cooling is completed, the quenching medium can be quickly discharged and will not remain in the inner hole, effectively improving the quenching and cooling effect and comprehensive performance of the main shaft.
[0039] In some embodiments, similar to the first chain 2, the third chain 5 and the second chain 4 can be fixedly connected to the crossbeam 3 by means of welding, bolts, lifting lugs, etc.
[0040] In some embodiments, the second chain 4 and the arc-shaped top end of the bracket 6 can be fixedly connected by a collar or welding, the straight edge of the bracket 6 and the straight section of the hook can be fixedly connected by welding or bolts, and the straight section of the hook and the hook body can be fixedly connected by welding or bolts. Those skilled in the art can flexibly select according to the actual situation, and no specific limitation is made in this embodiment.
[0041] Detailed description of the working principle:
[0042] After the wind power main shaft is austenitized and heated in the heating furnace, the furnace door is opened to pull out the trolley, and the main hook of the crane is used to lift the lifting ring 1 upward. The two hooks at the end of the second chain 4 are hooked to the lower side of the main shaft flange, and the third chain 5 is sleeved on the small head end. Lifting the main hook of the crane can lift the main shaft. After the main shaft is lifted, the third chain 5 firmly sleeves it at a certain distance from the end of the small head end, and the bracket 6 and the hook 7 firmly hold one end of the main shaft flange. During the movement and the shaking process after immersion in the quenching medium, phenomena such as slipping, instability, and falling off are avoided. Moreover, the flange end of the central axis of the main shaft is slightly lower than the small head end, and each step of the inner hole is in an inclined plane state. After the quenching and cooling is completed, the quenching medium can be quickly discharged and will not remain in the inner hole, effectively improving the quenching and cooling effect and comprehensive performance of the main shaft.
[0043] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.
Claims
1. A wind turbine main shaft heat treatment hoisting device, characterized in that: It includes a crossbeam, and the upper and lower sides of the crossbeam are respectively connected to a lifting device and a supporting device, the lifting device includes a plurality of first chains, one end of the first chain is fixedly connected to a lifting ring, and the other end is fixedly connected to the crossbeam; the supporting device includes a second chain and a third chain respectively connected to the two ends of the crossbeam, the end of the second chain is fixedly connected to a plurality of hooks, and the horizontal height of the end of the third chain is higher than the horizontal height of the end of the hook.
2. A wind turbine main shaft heat treatment hoisting device as claimed in claim 1, characterized in that: The lifting ring is placed on the vertical central axis of the beam.
3. A wind turbine main shaft heat treatment hoisting device as claimed in claim 1, characterized in that: Two first chains are provided and are respectively fixedly connected to the two ends of the crossbeam.
4. A wind turbine main shaft heat treatment hoisting device as claimed in claim 1, characterized in that: The second chain is fixedly connected to one end of the crossbeam and is fixed outside the first chain at the end.
5. The wind turbine main shaft heat treatment hoisting device according to claim 1, characterized in that: The second chain is fixedly connected to a plurality of hooks via a bracket.
6. A wind turbine main shaft heat treatment hoisting device as claimed in claim 5, characterized in that: The end of the second chain is fixedly connected to the bracket, and hooks are fixedly connected to both sides of the end of the bracket.
7. A wind turbine main shaft heat treatment hoisting device as claimed in claim 6, characterized in that: The bracket is fixed laterally.
8. A wind turbine main shaft heat treatment hoisting device as claimed in claim 6, characterized in that: The bracket and the hooks on both sides together form a herringbone structure.
9. A wind turbine main shaft heat treatment hoisting device as claimed in claim 4, characterized in that: The third chain is fixedly connected to the other end of the crossbeam and is fixed on the outside of the first chain at the other end.
10. A wind turbine main shaft heat treatment hoisting device as claimed in claim 9, characterized in that: The third chain is in a ring structure.