Transformer auxiliary replacement tool of wind generating set

Abstract

The utility model provides a transformer auxiliary replacement tool of a wind generating set, and relates to the field of operation and maintenance of wind driven generators. The transformer auxiliary replacement tool of the wind generating set comprises a trolley platform and a lifting platform, a supporting platform and two lifting rotating shafts are arranged above the trolley platform, the surface of each lifting rotating shaft is rotationally connected with a lower supporting arm and an upper supporting arm, and a movable inserting arm is arranged on the surface of the lifting platform in a sliding mode. According to the transformer auxiliary replacement tool of the wind generating set, the auxiliary tool is driven to move through the trolley platform, the lower supporting arm and the upper supporting arm are connected together through the lifting rotating shafts, the two ends of the lower supporting arm and the two ends of the upper supporting arm are far away from each other through the two lifting rotating shafts getting close to each other, and then the lifting platform is driven to move upwards; the movable insertion arms transversely slide on the surface of the lifting platform, so that the movable insertion arms drive the transformer to enter the cabinet body, the replacement difficulty of the transformer is reduced, and the maintenance efficiency of the wind driven generator is improved.

Description

Technical Field

[0001] This utility model relates to a transformer replacement tooling, specifically an auxiliary replacement tooling for transformers in wind turbine generator sets, belonging to the field of wind turbine generator operation and maintenance technology. Background Technology

[0002] In the Goldwind GW121-2500 wind turbine generator set, the auxiliary transformer plays a crucial role. It can convert the 690V AC power generated by the generator into 400V AC power to provide power to various systems of the unit, including the yaw motor, pitch motor, water-cooled circulating pump, main control cabinet, converter cabinet, whole machine lighting and maintenance sockets.

[0003] The manual mechanical loading and unloading forklift with application number "CN90102291.8" consists of a gantry frame, lifting mechanism, drum operating mechanism, labor-saving pulley system for speed reduction, and foot brake mechanism. It uses a rotary crank with adjustable lever length to directly drive the drum connected to the braking device, and pulls the forks to lift and lower the goods via ropes and pulleys. Lowering is achieved by hand crank or by using the weight of the goods to slide down. The two rear steering wheels are equipped with foot brakes.

[0004] During long-term operation, wind turbine generators inevitably experience damage to their auxiliary transformers, necessitating replacement. However, the forklifts used in the comparison document occupy significant space, making them unsuitable for use in the space-constrained environment of wind turbine generators, thus complicating the replacement process. Therefore, we provide a tooling solution for auxiliary transformer replacement in wind turbine generators to address these issues. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary replacement tooling for the transformer of a wind turbine generator set in order to solve the above-mentioned problems, thereby addressing the difficulty of replacing the auxiliary transformer using a forklift in the prior art.

[0006] This utility model is achieved through the following technical solution: an auxiliary replacement tool for a transformer in a wind turbine generator set.

[0007] The device includes a trolley platform and a lifting platform. A support platform and two lifting shafts are provided above the trolley platform. A lower support arm and an upper support arm are rotatably connected to the surface of each lifting shaft. Each lower support arm is rotatably connected to the support platform, and each upper support arm is rotatably connected to the lifting platform. A movable insert arm slides on the surface of the lifting platform.

[0008] Preferably, the trolley platform has a sunken fixing frame in the middle, and the interior of the sunken fixing frame is fixedly connected with a configuration block. All four corners of the trolley platform are fixedly connected with brakeable universal wheels by bolts. The sunken fixing frame reduces the overall height of the device and improves the convenience of storage and use of the device.

[0009] Preferably, the support platform is fixedly connected to the trolley platform by bolts, and a lifting screw is provided above the support platform. One end of the lifting screw is rotatably connected to a lifting shaft. By rotating the lifting screw, the two lifting shafts are controlled to move closer to each other, thereby causing the ends of the lower support arm and the upper support arm to move away from each other.

[0010] Preferably, the surface of the lifting screw is threadedly connected to another lifting shaft, and the other end of the lifting screw is engaged with a ratchet wrench. By repeatedly turning the ratchet wrench within a small range, the rotation of the lifting screw can be controlled, reducing the difficulty of rotating the lifting screw.

[0011] Preferably, the bottom ends of the two lower support arms are connected by toothed meshing, and the top ends of the two upper support arms are connected by toothed meshing. The two lower support arms rotate synchronously by the toothed meshing at the bottom of the two lower support arms, and the two upper support arms rotate synchronously by the toothed meshing at the top of the two upper support arms, thereby improving the convenience and stability of lifting the platform.

[0012] Preferably, sliding guide rails are fixedly connected to both sides of the movable insert arm, and fixed sliders arranged at equal intervals are fixedly connected to the surface of the lifting platform. The fixed sliders are slidably connected to the adjacent sliding guide rails. The movable insert arm is limited by the sliding guide rails sliding inside the fixed sliders, thereby improving the stability of the lateral movement of the movable insert arm.

[0013] Preferably, the bottom of the sliding guide rail is convex, and the groove of the fixed slider is convex. The surfaces of the trolley platform and the movable insert arm are fixedly connected with movable handles. The movable handles facilitate the movement of the trolley platform and the pushing and pulling of the movable insert arm, making it more stable and convenient for the transformer to enter and exit the transformer cabinet.

[0014] This utility model provides an auxiliary replacement fixture for transformers in wind turbine generator sets, which has the following beneficial effects:

[0015] The transformer replacement auxiliary tooling for this wind turbine generator set is moved by a trolley platform, which can also support and fix the support platform, improving the stability of the support platform's operation. The lower support arm and the upper support arm are connected by a lifting shaft. By bringing the two lifting shafts closer together, the ends of the lower and upper support arms are moved away from each other, thereby driving the lifting platform upward. The moving insert arm slides laterally on the surface of the lifting platform, allowing the moving insert arm to carry the transformer into the generator transformer cabinet, reducing the difficulty of transformer replacement and improving the maintenance efficiency of the wind turbine generator.

[0016] The transformer replacement fixture for this wind turbine generator set features a sunken mounting frame that lowers the overall height of the device, improving its ease of storage and use. Four brakeable casters provide omnidirectional movement and securing capabilities. Configuration blocks enhance stability, preventing tilting of the trolley platform due to center of gravity shift during lateral movement of the moving arm, thus improving the stability of the moving arm transporting the transformer. Rotation of the lifting screw controls the two lifting shafts to move closer together, thereby distancing the lower and upper support arms. The screw rotation also reduces the difficulty of raising the platform. A ratchet wrench facilitates easy rotation of the lifting screw.

[0017] The transformer auxiliary replacement tooling for this wind turbine generator set utilizes a ratchet wrench. Due to the unidirectional force of the ratchet wrench, repeated small-range rotations control the rotation of the lifting screw, reducing the difficulty and improving its ease of operation. The two lower support arms rotate synchronously through the meshing of their bottom teeth, and the two upper support arms rotate synchronously through the meshing of their top teeth, enhancing the stability and ease of lifting the platform. A sliding guide rail within the fixed slider restricts the movement of the movable arm, improving its lateral stability. Bolts secure the fixed slider, facilitating replacement when damaged, thus improving maintenance efficiency. A movable handle allows for easy movement of the trolley platform and pushing / pulling of the movable arm, making transformer entry and exit from the transformer cabinet more stable and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of the A-section structure;

[0020] Figure 3 This utility model Figure 1 Enlarged view of the structure of part B.

[0021] [Explanation of Key Component Symbols]

[0022] 1. Cart platform; 2. Support platform; 3. Lower support arm; 4. Lifting shaft; 5. Upper support arm; 6. Lifting screw; 7. Ratchet wrench; 8. Lifting platform; 9. Moving insert arm; 10. Sliding guide rail; 11. Fixed slider; 12. Moving handle. Detailed Implementation

[0023] This utility model provides an auxiliary tooling for replacing the transformer in a wind turbine generator set.

[0024] Please see Figure 1 , Figure 2and Figure 3 The device includes a trolley platform 1 and a lifting platform 8. The trolley platform 1 has a recessed fixed frame in the middle, and a configuration block is fixedly connected inside the recessed fixed frame. Brake-operated casters are fixedly connected to the four corners of the trolley platform 1 by bolts. The recessed fixed frame reduces the overall height of the device and facilitates the storage of the lower support arm 3 and the upper support arm 5, improving the convenience of storage and use of the device. The four brake-operated casters provide the device with all-round movement and fixing functions. The configuration block makes the device more stable and prevents the center of gravity from shifting and causing the trolley platform 1 to tilt when the moving arm 9 moves laterally, thus improving the stability of the moving arm 9 in transporting the transformer.

[0025] Above the trolley platform 1 is a support platform 2 and two lifting shafts 4. Each lifting shaft 4 has a lower support arm 3 and an upper support arm 5 rotatably connected to its surface. Each lower support arm 3 is rotatably connected to the support platform 2, and each upper support arm 5 is rotatably connected to the lifting platform 8. The trolley platform 1 drives the auxiliary tooling to move and can support and fix the support platform 2, improving the stability of the support platform 2. The lower support arm 3 and the upper support arm 5 are connected together by the lifting shafts 4. By bringing the two lifting shafts 4 closer to each other, the ends of the lower support arm 3 and the upper support arm 5 are moved away from each other, thereby driving the lifting platform 8 to move upward.

[0026] The support platform 2 is fixedly connected to the trolley platform 1 by bolts. A lifting screw 6 is set on the top of the support platform 2. One end of the lifting screw 6 is rotatably connected to a lifting shaft 4. By rotating the lifting screw 6, the two lifting shafts 4 are controlled to move closer to each other, thereby making the two ends of the lower support arm 3 and the upper support arm 5 move further away from each other. The rotation of the lifting screw 6 also reduces the difficulty of lifting the platform 8.

[0027] The surface of the lifting screw 6 is threadedly connected to another lifting shaft 4. The other end of the lifting screw 6 is engaged with a ratchet wrench 7. The lifting screw 6 can be rotated easily through the ratchet wrench 7. Because of the unidirectional force of the ratchet wrench 7, the rotation of the lifting screw 6 can be controlled by repeatedly rotating the ratchet wrench 7 within a small range, which reduces the difficulty of rotating the lifting screw 6 and improves the convenience of rotating the lifting screw 6.

[0028] The bottom ends of the two lower support arms 3 are connected by toothed meshing, and the top ends of the two upper support arms 5 are connected by toothed meshing. The two lower support arms 3 rotate synchronously by the toothed meshing at the bottom of the two lower support arms 3, and the two upper support arms 5 rotate synchronously by the toothed meshing at the top of the two upper support arms 5, thereby improving the stability and convenience of lifting the platform 8.

[0029] The surface of the lifting platform 8 has a sliding movable arm 9, which is C-shaped. The movable arm 9 is inserted into the groove at the bottom of the transformer to fix the transformer to the movable arm 9. The movable arm 9 slides laterally on the surface of the lifting platform 8, so that the movable arm 9 can drive the transformer into the generator transformer cabinet, reducing the difficulty of transformer replacement and improving the maintenance efficiency of wind turbine.

[0030] The movable insert arm 9 is fixedly connected to sliding guide rails 10 on both sides. The surface of the lifting platform 8 is fixedly connected to fixed sliders 11 arranged at equal intervals. The fixed sliders 11 are slidably connected to the adjacent sliding guide rails 10. The sliding guide rails 10 slide inside the fixed sliders 11 to limit the movable insert arm 9 and improve the stability of the lateral movement of the movable insert arm 9. The fixed sliders 11 are installed by bolts, which makes it easy to replace the fixed sliders 11 when they are damaged, thus improving the maintenance efficiency of the device.

[0031] The bottom of the sliding guide rail 10 is convex, and the groove of the fixed slider 11 is also convex. By limiting the shape of the sliding guide rail 10 and the fixed slider 11, the fixing ability of the lifting platform 8 to the moving arm 9 is improved. The surfaces of the trolley platform 1 and the moving arm 9 are both fixedly connected with the moving handle 12. The moving handle 12 facilitates the movement of the trolley platform 1 and the pushing and pulling of the moving arm 9, making it more stable and convenient for the transformer to enter and exit the transformer cabinet.

[0032] The ratchet wrench 7 is existing technology, and its detailed parameters and models will not be described in detail in this application.

[0033] In use, this utility model works as follows: The trolley platform 1 is moved near the transformer cabinet by moving the handle 12. The ratchet wrench 7 is repeatedly turned to control the rotation of the lifting screw 6, bringing the two lifting shafts 4 closer together and controlling the lower support arm 3 and upper support arm 5 to move further apart, causing the lifting platform 8 to move upwards. After reaching a suitable height, the moving handle 12 on the surface of the moving insert arm 9 is used to move it into the transformer cabinet, allowing the moving insert arm 9 to insert into the bottom of the transformer. The ratchet wrench 7 is then turned to move the lifting platform 8 and the transformer upwards a certain distance, facilitating the removal of the transformer. Adjusting the ratchet wrench 7 reverses the rotation of the lifting screw 6, lowering the lifting platform 8 to the surface of the trolley platform 1. Because the trolley platform 1 has a counterweight inside, the moving insert arm 9 can stably disassemble and install the transformer. The above operations are repeated to install the new transformer into the transformer cabinet, thus assisting in the placement or removal of the transformer from the cabinet, facilitating the replacement of transformers on wind turbine generator sets by the operators.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transformer auxiliary replacement fixture for a wind turbine generator set, comprising a trolley platform (1) and a lifting platform (8), characterized in that: The trolley platform (1) is provided with a support platform (2) and two lifting shafts (4) on its upper part. Each lifting shaft (4) is rotatably connected to a lower support arm (3) and an upper support arm (5). Each lower support arm (3) is rotatably connected to the support platform (2), and each upper support arm (5) is rotatably connected to the lifting platform (8). A movable insert arm (9) slides on the surface of the lifting platform (8).

2. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 1, characterized in that: The trolley platform (1) has a sunken fixed frame in the middle, and a configuration block is fixedly connected inside the sunken fixed frame. Brake-operated universal wheels are fixedly connected to the four corners of the trolley platform (1) by bolts.

3. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 1, characterized in that: The support platform (2) is fixedly connected to the trolley platform (1) by bolts. A lifting screw (6) is provided above the support platform (2), and one end of the lifting screw (6) is rotatably connected to a lifting shaft (4).

4. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 3, characterized in that: The surface of the lifting screw (6) is threadedly connected to another lifting shaft (4), and the other end of the lifting screw (6) is engaged with a ratchet wrench (7).

5. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 1, characterized in that: The bottom ends of the two lower support arms (3) are connected by tooth meshing, and the top ends of the two upper support arms (5) are connected by tooth meshing.

6. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 1, characterized in that: The movable insert arm (9) is fixedly connected to sliding guide rails (10) on both sides, and the surface of the lifting platform (8) is fixedly connected to fixed sliders (11) arranged at equal intervals. The fixed sliders (11) are slidably connected to the adjacent sliding guide rails (10).

7. The auxiliary replacement tooling for a transformer in a wind turbine generator set according to claim 6, characterized in that: The bottom of the sliding guide rail (10) is convex, and the groove of the fixed slider (11) is convex. The surfaces of the trolley platform (1) and the movable insert arm (9) are both fixedly connected with movable handles (12).

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