A wind power gear carburizing and quenching anti-deformation hoisting clamp

Abstract

This utility model discloses an anti-deformation lifting fixture for carburizing and quenching wind turbine gears, specifically relating to the field of gear lifting technology. It includes a positioning roller, with a housing rotatably connected to its outer side. Multiple guide rods are fixedly connected to the inner side of the housing, and multiple insertion holes are provided on the outer side of the housing. An expansion mechanism is provided on the outer side of the positioning roller. The expansion mechanism includes multiple outer columns, with sliding rods slidably connected to the inner sides of the outer columns. One end of each sliding rod is hinged to an arc-shaped support arm, and an arc-shaped groove is provided on the inner side of the arc-shaped support arm. This utility model utilizes multiple expandable elastic rings to fit wind turbine gears of different diameters and applies support force evenly through elastic support, effectively resisting shrinkage deformation during quenching and sagging deformation caused by its own weight. Two rotatable connecting discs automatically adjust the gears to the vertical line of the center of gravity during lifting, bearing only axial tension and avoiding unexpected deformation caused by lateral forces, thereby reducing the deformation risk during quenching and lifting.

Description

Technical Field

[0001] This utility model relates to the field of gear hoisting technology, and more specifically, to a deformation-resistant hoisting fixture for carburizing and quenching wind turbine gears. Background Technology

[0002] As core components of the transmission system, wind turbine gears (especially planetary gears and sun gears in megawatt-class gearboxes) require carburizing and quenching to obtain high surface hardness and core toughness. During the quenching and cooling process after carburizing, due to the intense shrinkage of the martensitic phase transformation and the superposition of thermal stress, the gears are prone to irreversible deformations such as inner hole shrinkage, ellipticization, and end face warping. Mainstream lifting fixtures such as rigid mandrel type, partial claw type, and hook suspension type are usually used to move wind turbine gears.

[0003] In actual use, during the positioning, hoisting, and quenching movement of wind turbine gears, some sliding will occur between the wind turbine gears and the hoisting fixtures. This process will cause some deformation of the wind turbine gears, affecting the quenching quality of the wind turbine gears. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a deformation-resistant hoisting fixture for carburizing and quenching wind turbine gears, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A deformation-resistant hoisting fixture for carburizing and quenching wind turbine gears includes a positioning roller. A housing is rotatably connected to the outer side of the positioning roller, and multiple guide rods are fixedly connected to the inner side of the housing. Multiple insertion holes are provided on the outer side of the housing. An expansion mechanism is provided on the outer side of the positioning roller. The expansion mechanism includes multiple outer columns, with sliding rods slidably connected to the inner sides of the outer columns. One end of each sliding rod is hinged to an arc-shaped support arm, and an arc-shaped groove is provided on the inner side of the arc-shaped support arm. A bracket is fixedly connected to one end of the arc-shaped support arm. Multiple outer columns are arranged in a circular array outside the positioning roller. The inner side of the arc-shaped groove is slidably connected to the outer side of the guide rod. Two guide rods are inserted into the inner side of the bracket. A positioning seat has two screws threadedly connected to its inner side. One end of each screw is threadedly connected to the inner side of a bracket. A connecting plate is rotatably connected to the inner side of the bracket. Two sliding plates are slidably connected to the inner side of the connecting plate. An elastic ring is hinged to one end of each sliding plate. Multiple positioning posts are fixedly connected to the outer side of the positioning roller. A spring is fixedly connected to the inner side of each positioning post. A push ring is fixedly connected to one end of each spring. The outer side of the push ring is slidably connected to the inner side of the positioning post. An insertion rod is fixedly connected to the inner side of the push ring. The outer side of the insertion rod is slidably connected to the inner side of the positioning post. One end of the insertion rod is inserted into the inner side of the insertion hole. An auxiliary lifting mechanism is provided on the outer side of the positioning roller.

[0007] By adopting the above technical solution, multiple outer shells and guide rods are used to slide and guide multiple arc-shaped support arms and arc-shaped slides, so that the elastic rings on one side of multiple supports can provide multi-point support for the inner wall of the wind turbine gear. With the elastic support of multiple elastic rings, the inner wall of the wind turbine gear can be fully fitted, maintaining multi-point positioning of the wind turbine gear and effectively maintaining its own stability during the quenching of the wind turbine gear.

[0008] As a further description of the above technical solution: the auxiliary hoisting mechanism has two rotating seats, one end of which is fixedly connected to the outside of the positioning roller, and the two rotating seats are symmetrically arranged at both ends of the positioning roller. A connecting plate is rotatably connected to the outside of the rotating seat, and an arc-shaped hole is opened on the inner side of the connecting plate.

[0009] By adopting the above technical solution, the wind turbine gear is automatically rotated to the vertical line of the center of gravity after being positioned by using two connecting discs and positioning rollers through a swivel base, thus eliminating the risk of additional deformation of the wind turbine gear during the hoisting process.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. By setting up an expansion support mechanism, compared with the existing technology, multiple expandable elastic rings are used to fit wind turbine gears of different diameters. The elastic support of multiple elastic rings can evenly apply support force to the wind turbine gear, effectively resisting the shrinkage deformation caused by quenching. The multi-point support evenly distributes the weight of the gear, reducing the sagging deformation caused by the weight of the wind turbine gear, and effectively resisting the deformation caused by the quenching of the wind turbine gear.

[0012] 2. By setting up an auxiliary hoisting mechanism, compared with the existing technology, the use of two rotatable connecting plates can make the wind turbine gear automatically adjust to the vertical line of the center of gravity during the hoisting and movement process, and only bear axial tension, avoiding unexpected deformation caused by lateral force, and eliminating the risk of additional deformation of the wind turbine gear caused by hoisting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a front view diagram of the present invention.

[0015] Figure 3 This is a partial schematic diagram of the connection between the positioning roller and the outer column of this utility model.

[0016] Figure 4 This is a partial schematic diagram of the connection between the outer shell and the guide rod of this utility model.

[0017] Figure 5 This is a partial schematic diagram of the connection between the bracket and the connecting plate of this utility model.

[0018] Figure 6 This is a cross-sectional schematic diagram of the connecting disc of this utility model.

[0019] The attached figures are labeled as follows: 1. Positioning roller; 2. Outer shell; 3. Guide rod; 4. Insertion hole; 5. Outer column; 6. Sliding rod; 7. Arc-shaped support arm; 8. Arc-shaped slide groove; 9. Bracket; 10. Positioning seat; 11. Connecting plate; 12. Sliding plate; 13. Elastic ring; 14. Screw; 15. Positioning pin; 16. Spring; 17. Push ring; 18. Insertion rod; 19. Rotary seat; 20. Connecting plate; 21. Arc-shaped hole. Detailed Implementation

[0020] 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.

[0021] The embodiments disclosed in this application are as follows: Figure 1-6The illustrated anti-deformation lifting fixture for carburizing and quenching wind turbine gears includes a positioning roller 1. A housing 2 is rotatably connected to the outer side of the positioning roller 1. Multiple guide rods 3 are fixedly connected to the inner side of the housing 2. Multiple insertion holes 4 are provided on the outer side of the housing 2. An expansion mechanism is provided on the outer side of the positioning roller 1. The expansion mechanism includes multiple outer columns 5. Sliding rods 6 are slidably connected to the inner side of each outer column 5. An arc-shaped support arm 7 is hinged to one end of each sliding rod 6. An arc-shaped groove 8 is provided on the inner side of each arc-shaped support arm 7. A bracket 9 is fixedly connected to one end of each arc-shaped support arm 7. Multiple outer columns 5 are arranged in a circular array on the outer side of the positioning roller 1. The inner side of the arc-shaped groove 8 is slidably connected to the outer side of the guide rods 3. Two positioning seats 10 are inserted into the inner side of the bracket 9. Two screws 14 are threadedly connected to the inner side of each positioning seat 10. One end of each screw 14 is threadedly connected to the inner side of the bracket 9. A connecting plate 11 is rotatably connected to the inner side of the bracket 9. Two sliding plates 12 are slidably connected to the inner side of the connecting plate 11. An elastic ring 1 is hinged to one end of each sliding plate 12. 3. Multiple positioning posts 15 are fixedly connected to the outer side of the positioning roller 1. Springs 16 are fixedly connected to the inner side of the positioning posts 15. A push ring 17 is fixedly connected to one end of the spring 16. The outer side of the push ring 17 is slidably connected to the inner side of the positioning posts 15. An insertion rod 18 is fixedly connected to the inner side of the push ring 17. The outer side of the insertion rod 18 is slidably connected to the inner side of the positioning posts 15. One end of the insertion rod 18 is inserted into the inner side of the insertion hole 4. An auxiliary hoisting mechanism is set on the outer side of the positioning roller 1. The deflection of multiple outer shells 2 on the outer side of the positioning roller 1 and the sliding guidance of multiple arc-shaped support arms 7 and arc-shaped sliding grooves 8 by the guide rod 3 are used to pull the sliding rod 6 to slide on the inner side of the outer post 5. The elastic ring 13 on one side of multiple brackets 9 can fit and support the inner wall of the wind turbine gear, maintaining multi-point support for the wind turbine gear. The push ring 17 and insertion rod 18 pushed by multiple springs 16 are used to position the outer shell 2 at multiple points, so that the wind turbine gear and the hoisting fixture are kept stably connected.

[0022] Reference Figure 3 and Figure 6 As shown, the auxiliary hoisting mechanism has two rotating seats 19. One end of the rotating seat 19 is fixedly connected to the outside of the positioning roller 1. The two rotating seats 19 are symmetrically arranged at both ends of the positioning roller 1. A connecting plate 20 is rotatably connected to the outside of the rotating seat 19. An arc-shaped hole 21 is opened on the inner side of the connecting plate 20. The two connecting plates 20 are deflected on the outside of the positioning roller 1 and the rotating seat 19, and the hoisting rope passes through the arc-shaped hole 21 for fixation, so that the wind turbine gear will deflect to a certain extent due to gravity during the hoisting process.

[0023] The working principle of this utility model is as follows: Before carburizing and quenching the wind turbine gear, the operator first fixes the positioning roller 1. Based on the inner diameter of the wind turbine gear, multiple insert rods 18 are pulled outwards along the positioning post 15 and spring 16, and one end of each insert rod 18 is separated from the insertion holes 4 on both sides of the outer shell 2. This pushes the outer shell 2 to deflect outside the positioning roller 1, causing multiple guide rods 3 on the inner side of the outer shell 2 to slide and guide the arc-shaped grooves 8 on the inner side of the multiple arc-shaped support arms 7. This causes the diameter of the expanded elastic rings 13 to be relatively close to the inner diameter of the wind turbine gear. Then, the outer shell 2 and the multiple elastic rings 13 on the outer side of the positioning roller 1 are brought closer to the inner wall of the wind turbine gear. The outer shell 2 is then pushed to deflect again, causing the multiple guide rods 3 on the inner side of the outer shell 2 to slide and guide the arc-shaped grooves 8 on the inner side of the multiple arc-shaped support arms 7. This causes the arc-shaped support arms 7 to drive the sliding rods 6 to slide inside the outer post 5, allowing the multiple arc-shaped support arms to slide. The bracket 9 and elastic ring 13 at one end of the 7 are pressed against the inner wall of the wind turbine gear. At the same time, during the compression of multiple elastic rings 13, the two sliding plates 12 hinged to the inner wall of the elastic ring 13 can slide against each other inside the connecting plate 11, so that the elastic ring 13 can fully compress and fit against the inner wall of the wind turbine gear under elastic support. Then, the pull on multiple insertion rods 18 is released, so that multiple springs 16 push one side of the push ring 17, so that the push ring 17 drives one end of the insertion rod 18 to be inserted and positioned into the corresponding insertion holes 4 on both sides of the outer shell 2. This allows the inner wall of the wind turbine gear and multiple elastic rings 13 to be supported and positioned at multiple points. Then, the hoisting rope of the external hoisting equipment is passed through and fixed to the arc-shaped hole 21 on the inner side of the two connecting plates 20. The rotation of the two connecting plates 20, the rotating seat 19 and the positioning roller 1 is used to keep the positioning roller 1, the outer shell 2 and multiple elastic rings 13 and the wind turbine gear in a stable positioning and movement.

[0024] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A deformation-resistant hoisting fixture for carburizing and quenching wind turbine gears, comprising a positioning roller (1), characterized in that: The positioning roller (1) is rotatably connected to a housing (2), and a plurality of guide rods (3) are fixedly connected to the inner side of the housing (2). A plurality of insertion holes (4) are opened on the outer side of the housing (2), and an expansion mechanism is provided on the outer side of the positioning roller (1). The expansion mechanism includes multiple outer columns (5), with a sliding rod (6) slidably connected to the inner side of the outer column (5), an arc-shaped support arm (7) hinged to one end of the sliding rod (6), an arc-shaped groove (8) opened on the inner side of the arc-shaped support arm (7), and a bracket (9) fixedly connected to one end of the arc-shaped support arm (7). An auxiliary hoisting mechanism is provided on the outside of the positioning roller (1).

2. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 1, characterized in that: Multiple outer columns (5) are arranged in a ring array on the outside of the positioning roller (1), and the inner side of the arc-shaped groove (8) is slidably connected to the outer side of the guide rod (3).

3. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 1, characterized in that: Two positioning seats (10) are inserted into the inner side of the bracket (9), and two screws (14) are threadedly connected to the inner side of the positioning seats (10). One end of the screws (14) is threadedly connected to the inner side of the bracket (9).

4. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 1, characterized in that: The bracket (9) is rotatably connected to a connecting plate (11), and two sliding plates (12) are slidably connected to the inner side of the connecting plate (11). One end of the sliding plate (12) is hinged to an elastic ring (13).

5. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 1, characterized in that: Multiple positioning posts (15) are fixedly connected to the outside of the positioning roller (1). A spring (16) is fixedly connected to the inside of the positioning post (15). A push ring (17) is fixedly connected to one end of the spring (16). The outside of the push ring (17) is slidably connected to the inside of the positioning post (15). An insertion rod (18) is fixedly connected to the inside of the push ring (17). The outside of the insertion rod (18) is slidably connected to the inside of the positioning post (15). One end of the insertion rod (18) is inserted into the inside of the insertion hole (4).

6. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 1, characterized in that: The auxiliary hoisting mechanism has two rotating seats (19), one end of which is fixedly connected to the outside of the positioning roller (1), and the two rotating seats (19) are symmetrically arranged at both ends of the positioning roller (1).

7. The anti-deformation lifting fixture for carburizing and quenching wind turbine gears according to claim 6, characterized in that: The outer side of the rotating base (19) is rotatably connected to a connecting plate (20), and an arc-shaped hole (21) is opened on the inner side of the connecting plate (20).

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