Transformer winding coil hoisting equipment and hoisting method thereof

Abstract

The invention relates to the technical field of hoisting equipment, in particular to transformer winding coil hoisting equipment and a hoisting method thereof.The transformer winding coil hoisting equipment comprises a hoisting frame, a bearing mechanism, a linkage mechanism and a limiting mechanism, the whole hoisting frame is of a rectangular frame structure, a transformer coil is located in the hoisting frame, and the bearing mechanism is arranged on the hoisting frame; the linkage mechanism is arranged on the base, the limiting mechanism is arranged on the lifting frame, by means of the arrangement of the bearing mechanism, the coil tray can be in linkage at the bottom of the lifting frame, the bottom of a coil is borne through the coil tray, and a transmission top lifting mode is replaced with a bottom bearing mode; according to the lifting frame for the transformer coil, the problem that the coil possibly deforms in the lifting process is effectively solved, damage to the coil is further avoided, the periphery of the coil is limited through the arrangement of the limiting mechanism, and the periphery of the transformer coil located in the lifting frame can be supported to a certain degree in the lifting process.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to a transformer winding coil lifting equipment and a lifting method thereof. Background Art

[0002] Transformer coil is a kind of coil. Transformer needs coil to operate. According to the number of phases, it is divided into single-phase transformer and three-phase transformer. Coil is usually divided into two types: layer type and pancake type. The turns of the coil are arranged in layers along the axial direction and wound continuously. It is called layer coil. Each layer is like a cylinder. This is because the coil has good mechanical strength, is not easy to deform and is easy to wind. The coil composed of two layers is called double-layer cylindrical type; the coil composed of multiple layers is called multi-layer cylindrical type.

[0003] At present, in the power equipment manufacturing industry, especially in the production process of large transformers, the lifting of transformer winding coils is an important link. Traditional lifting methods mostly use manual or semi-automatic cranes, cranes and other equipment. Although these traditional equipment can meet the lifting needs to a certain extent, there are still many problems in actual operation, such as low work efficiency, poor safety, high labor costs, and easy damage to precision parts. With the improvement of industrial automation level and technological progress, the requirements for lifting equipment are getting higher and higher, and more attention is paid to efficiency, safety and intelligence.

[0004] In the related art, in the lifting operation of the cylindrical transformer coil, most of the time, the top of the coil is directly clamped and fixed, and then the coil is lifted as a whole and transported. Although this method can also meet the lifting operation requirements for the coil, since the transformer coil is similar to a spring structure after winding and the coil has a large dead weight, directly lifting the top is likely to cause damage to the coil. Summary of the invention

[0005] In order to solve the problem that the current lifting device directly performs lifting operations on the top of the coil, which is easy to cause damage to the coil, the present application provides a transformer winding coil lifting device and a lifting method thereof.

[0006] In the first aspect, the present application provides a transformer winding coil lifting device adopting the following technical solution: A transformer winding coil lifting device, comprising: A hoisting frame, wherein the hoisting frame is in a rectangular frame structure as a whole, and the transformer coil is located inside the hoisting frame; A supporting mechanism, which is used to support the transformer coil, and the supporting mechanism is arranged on the lifting frame, the supporting mechanism includes a base, an active rod, a first driven rod, a second driven rod and a coil tray, the base is fixed to the bottom of the lifting frame, one end of the active rod is rotatably connected to the base, one end of the first driven rod and the second driven rod are rotatably connected to each other, and two groups are provided, and the two groups are combined to form a diamond structure, the other end of the first driven rod is rotatably connected to an end of the active rod away from the base, and the other end of the second driven rod is rotatably connected to the coil tray; A linkage mechanism, which is used to drive the active rod to be linked, and the linkage mechanism is arranged on the base; A limiting mechanism is arranged on the lifting frame, and is used to limit the transformer coil.

[0007] By adopting the above technical solution and utilizing the setting of the supporting mechanism, the coil tray can be linked to the bottom of the lifting frame, and the bottom of the coil is supported by the coil tray. The top lifting method of the transmission is replaced by the bottom supporting method, which effectively solves the problem that the coil may be deformed during the lifting process, thereby avoiding damage to the coil and avoiding economic losses. It is simple and efficient. The limiting mechanism is used to limit the four sides of the coil, so that the transformer coil inside the lifting frame can be supported to a certain extent on all sides during the lifting process, thereby ensuring the stability of the transformer coil and avoiding the transformer coil from colliding with the lifting frame or tilting in the lifting frame.

[0008] Optionally, the supporting mechanism also includes a linkage rod, a first transmission rod, a passive rod and a second transmission rod, one end of the linkage rod is rotatably connected to the side wall of the base, the other end of the linkage rod is rotatably connected to the connection between the first driven rod and the second driven rod, one end of the first transmission rod is fixed to the connecting end of the linkage rod and the base, one end of the passive rod is rotatably connected to an end of the first transmission rod away from the linkage rod, the center of the second transmission rod is rotatably connected to an end of the linkage rod away from the base, and the other end of the passive rod is rotatably connected to one end of the second transmission rod.

[0009] By adopting the above technical solution, the linkage rod is driven to move synchronously by the linkage of the first driven rod and the second driven rod, and the passive rod is driven to move synchronously by the first transmission rod.

[0010] Optionally, the linkage rod and the passive rod are parallel to each other, and the coil tray is in a horizontal state.

[0011] By adopting the above technical solution and utilizing the linkage of structures such as the linkage rod and the passive rod, the coil tray can always maintain a horizontal state during the movement.

[0012] Optionally, the supporting mechanism also includes an adjusting rod and a third transmission rod, one end of the adjusting rod and the third transmission rod are rotatably connected to each other, the other end of the adjusting rod is rotatably connected to an end of the second transmission rod away from the passive rod, and the other end of the third transmission rod is fixed to the coil tray.

[0013] By adopting the above technical solution, the third transmission rod can be linked with the second transmission rod synchronously by using the adjustment rod, thereby driving the coil tray to be linked, so that the coil tray is in a horizontal state.

[0014] Optionally, the linkage mechanism includes a linkage gear, a rack and a screw rod, the linkage gear is fixed on the active rod at the rotating connection end of the base, and a slot is opened on the side of the base close to the linkage gear, the rack is slidably engaged in the slot of the base and meshes with the linkage gear, the screw rod is fixed at one end of the rack, and the screw rod passes through the base and is slidably connected to the base.

[0015] By adopting the above technical solution, the sliding of the rack is utilized to drive the linkage gear to mesh and link, and the active rod is driven to rotate through the linkage gear.

[0016] Optionally, the linkage mechanism also includes a worm wheel, a worm and a servo motor. The worm wheel is rotatably connected to one side of the base, and a screw hole is provided through the center of the worm wheel. The screw thread is engaged in the screw hole. The servo motor is fixed on the top of the base, and the worm is coaxially fixed on the output shaft of the servo motor and meshes with the worm wheel.

[0017] By adopting the above technical solution, the servo motor is used to drive the worm to rotate, and the worm wheel is meshed and linked through the worm, so that the lead screw can be threadedly linked in the screw hole of the worm wheel.

[0018] Optionally, the limiting mechanism includes a guide rod, a clamping plate and a reset member, the guide rod passes through the lifting frame and is slidably connected to the lifting frame, the clamping plate is fixed at one end of the guide rod and abuts against the transformer coil, the reset member is sleeved on the guide rod, and one end of the reset member abuts against the clamping plate, and the other end abuts against the lifting frame.

[0019] By adopting the above technical solution, the elastic force of the reset member is used to push the clamping plate, so that the clamping plate abuts against the transformer coil and limits the transformer coil.

[0020] Optionally, a limiting disk is coaxially fixed to one end of the guide rod away from the clamping plate, and the diameter of the limiting disk is larger than that of the guide rod.

[0021] By adopting the above technical solution, the guide rod is limited by the limiting plate to prevent the guide rod from slipping.

[0022] Optionally, the bottom of the splint is provided with an arc-shaped curved structure.

[0023] By adopting the above technical solution, the arc-shaped bending structure is utilized so that when the clamping plate abuts against the transformer coil, the transformer coil pushes the clamping plate to slide.

[0024] In a second aspect, the present application also provides a lifting method, comprising the following steps: S1. Cover the coil, move the lifting frame to the top of the transformer coil to be lifted, and then slowly lower the lifting frame until the clamping plate abuts against the coil, and slides through the guide rod under the limit action and adheres to the outside of the coil; S2, bottom support, control the servo motor to drive the worm to rotate so that the worm wheel meshes and links, and then the lead screw thread links, and drives the rack to move, so that the linkage gear meshes and links, and drives the active rod to rotate through the linkage gear, and drives the first driven rod and the second driven rod to synchronously link, and then drives the coil tray to move until the coil tray moves to the bottom of the transformer coil; S3, coil lifting, after supporting the bottom of the transformer coil with the coil tray, the transformer coil is lifted by the lifting frame as a whole and the combination of external equipment.

[0025] By adopting the above technical solution, S1, S2, and S3 are used to guide the operation, so that the transformer coil can be quickly connected to the lifting frame and lifted in the lifting frame through the coil tray to avoid lifting on the top of the transformer coil, thereby effectively reducing the damage rate of the transformer coil. At the same time, the transformer coil is supported around by a splint to prevent the transformer coil from shaking during lifting.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the supporting mechanism, the coil tray can be linked to the bottom of the lifting frame, and the bottom of the coil is supported by the coil tray. The bottom support method replaces the top lifting method of the transmission, which effectively solves the problem that the coil may be deformed during the lifting process, thereby avoiding damage to the coil and economic losses. It is also simple and efficient; 2. Use the limiting mechanism to limit the four sides of the coil, so that the transformer coil inside the lifting frame can be supported to a certain extent on all sides during the lifting process, ensuring the stability of the transformer coil and avoiding the transformer coil from colliding with the lifting frame or tilting in the lifting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external overall structure of a transformer winding coil lifting device and a lifting method thereof in this embodiment.

[0028] Figure 2 It is a partial enlarged structural diagram of the lifting frame in this embodiment.

[0029] Figure 3 Schematic diagram of the connection structure of the limiting mechanism in this embodiment.

[0030] Figure 4 It is a schematic diagram of the connection structure of the supporting mechanism in this embodiment.

[0031] Figure 5 Schematic diagram of the linkage mechanism structure in this embodiment.

[0032] Description of reference numerals: 1. Lifting frame; 2. Supporting mechanism; 21. Base; 22. Active rod; 23. First driven rod; 24. Second driven rod; 25. Coil tray; 26. Linkage rod; 27. First transmission rod; 28. Passive rod; 29. ​​Second transmission rod; 210. Adjustment rod; 211. Third transmission rod; 3. Linkage mechanism; 31. Linkage gear; 32. Rack; 33. Screw; 34. Worm wheel; 35. Worm; 36. Servo motor; 4. Limiting mechanism; 41. Guide rod; 42. Clamp; 43. Reset member; 44. Limiting disk. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiments of the present application disclose a transformer winding coil lifting device and a lifting method thereof.

[0035] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In a first aspect, the present application provides a transformer winding coil lifting device: Reference Figure 1 and Figure 2 A transformer winding coil lifting equipment comprises a lifting frame 1, a supporting mechanism 2, a linkage mechanism 3 and a limiting mechanism 4. The lifting frame 1 is an overall rectangular frame structure, and the transformer coil is located inside the lifting frame 1. The supporting mechanism 2 is arranged on the lifting frame 1, the linkage mechanism 3 is arranged on the base 21, and the limiting mechanism 4 is arranged on the lifting frame 1. By using the setting of the supporting mechanism 2, the coil tray 25 can be linked at the bottom of the lifting frame 1, and the bottom of the coil is supported by the coil tray 25. The top lifting method of the transmission is replaced by the bottom supporting method, which effectively solves the problem that the coil may be deformed during the lifting process, thereby avoiding damage to the coil and avoiding economic losses. At the same time, it is simple and efficient, and the limiting mechanism 4 is used to limit the four sides of the coil, so that the transformer coil located inside the lifting frame 1 can be supported to a certain extent on all sides during the lifting process, thereby ensuring the stability of the transformer coil and avoiding the transformer coil from colliding with the lifting frame 1 or tilting in the lifting frame 1.

[0037] Reference Figure 3 and Figure 4 In the embodiment of the present application, regarding the supporting mechanism 2, the supporting mechanism 2 includes a base 21, an active rod 22, a first driven rod 23, a second driven rod 24, a coil tray 25, a linkage rod 26, a first transmission rod 27, a passive rod 28, a second transmission rod 29, an adjustment rod 210 and a third transmission rod 211. The linkage of the first driven rod 23 and the second driven rod 24 drives the linkage rod 26 to move synchronously, and the first transmission rod 27 drives the passive rod 28 to move synchronously, and then the third transmission rod 211 drives the coil tray 25 to move, so that the coil tray 25 can always maintain a horizontal state while being displaced.

[0038] Specifically, the base 21 is fixed to the bottom of the lifting frame 1, one end of the active rod 22 is rotatably connected to the base 21, one end of the first driven rod 23 and the second driven rod 24 are rotatably connected to each other, and two groups are provided, and the two groups are combined to form a diamond structure, the other end of the first driven rod 23 is rotatably connected to the end of the active rod 22 away from the base 21, the other end of the second driven rod 24 is rotatably connected to the coil tray 25, one end of the linkage rod 26 is rotatably connected to the side wall of the base 21, and the other end of the linkage rod 26 is rotatably connected to the connection between the first driven rod 23 and the second driven rod 24. One end of the transmission rod 27 is fixed to the connecting end of the linkage rod 26 and the base 21, one end of the passive rod 28 is rotatably connected to the end of the first transmission rod 27 away from the linkage rod 26, the center of the second transmission rod 29 is rotatably connected to the end of the linkage rod 26 away from the base 21, the other end of the passive rod 28 is rotatably connected to one end of the second transmission rod 29, one end of the adjusting rod 210 and the third transmission rod 211 are rotatably connected to each other, the other end of the adjusting rod 210 is rotatably connected to the end of the second transmission rod 29 away from the passive rod 28, and the other end of the third transmission rod 211 is fixed to the coil tray 25.

[0039] Reference Figure 5 Specifically, in the embodiment of the present application, the linkage mechanism 3 includes a linkage gear 31, a rack 32, a lead screw 33, a worm wheel 34, a worm 35 and a servo motor 36. The servo motor 36 is used to drive the worm 35 to rotate, and the worm wheel 34 is meshed and linked through the worm 35, so that the lead screw 33 can be threadedly linked in the screw hole of the worm wheel 34, and then the sliding of the rack 32 is used to drive the linkage gear 31 to mesh and link, and the linkage gear 31 is used to drive the active rod 22 to rotate.

[0040] In the embodiment of the present application, the linkage gear 31 is fixed on the active rod 22 and is rotated to connect with the base 21, and a slot is provided on one side of the base 21 close to the linkage gear 31, the rack 32 is slidably engaged in the slot of the base 21, and meshes with the linkage gear 31, the screw rod 33 is fixed at one end of the rack 32, and the screw rod 33 passes through the base 21 and is slidably connected with the base 21, the worm gear 34 is rotationally connected to one side of the base 21, and a screw hole is provided at the center of the worm gear 34, the screw rod 33 is threadedly engaged in the screw hole, the servo motor 36 is fixed on the top of the base 21, and the worm 35 is coaxially fixed on the output shaft of the servo motor 36 and meshes with the worm gear 34.

[0041] In the embodiment of the present application, the linkage rod 26 and the passive rod 28 are parallel to each other, and the coil tray 25 is in a horizontal state. The linkage of the linkage rod 26 and the passive rod 28 and other structures is utilized to enable the coil tray 25 to always maintain a horizontal state during the movement.

[0042] Specifically, the limiting mechanism 4 includes a guide rod 41, a clamping plate 42 and a reset member 43. The clamping plate 42 is pushed by the elastic force of the reset member 43, so that the clamping plate 42 abuts against the transformer coil and limits the transformer coil.

[0043] The guide rod 41 passes through the lifting frame 1 and is slidably connected to the lifting frame 1. The clamping plate 42 is fixed to one end of the guide rod 41 and abuts against the transformer coil. The reset member 43 is sleeved on the guide rod 41, and one end of the reset member 43 abuts against the clamping plate 42 and the other end abuts against the lifting frame 1.

[0044] In the embodiment of the present application, a limiting disk 44 is coaxially fixed to one end of the guide rod 41 away from the clamping plate 42. The limiting disk 44 has a diameter larger than the guide rod 41. The limiting disk 44 is used to limit the guide rod 41 to prevent the guide rod 41 from slipping.

[0045] Specifically, an arc-shaped bending structure is provided at the bottom of the clamping plate 42. The arc-shaped bending structure enables the clamping plate 42 to slide when the clamping plate 42 abuts against the transformer coil.

[0046] It should be noted that in the embodiment of the present application, the reset member 43 is a cylindrical spring. In other embodiments, other forms of reset members are also possible, which are also preferred embodiments of the present application.

[0047] The implementation principle of a transformer winding coil lifting device and a lifting method thereof in an embodiment of the present application is as follows: first, the lifting frame 1 is lifted to the top of the transformer coil by an external lifting device, and then the lifting frame 1 is slowly lowered. During the placement process, the transformer coil abuts against the clamping plate 42 until the transformer coil is completely located inside the lifting frame 1, and then the servo motor 36 is started to drive the worm 35 to rotate so that the worm wheel 34 engages and links, and then the lead screw 33 is threadedly linked, and the rack 32 is driven to move, so that the linkage gear 31 engages and links, and the active rod 22 is driven to rotate through the linkage gear 31, and the first driven rod 23 and the second driven rod 24 are driven to link synchronously, and then the coil tray 25 is driven to move until the coil tray 25 moves to the bottom of the transformer coil, and then the lifting frame 1 and the coil can be lifted as a whole by external equipment.

[0048] Second, refer to Figure 1-Figure 5 The present application also provides a lifting method, comprising the following steps: S1, cover the coil, move the lifting frame 1 to the top of the transformer coil to be lifted, and then slowly lower the lifting frame 1 until the clamping plate 42 abuts against the coil, and slides through the guide rod 41 under the limiting action and adheres to the outside of the coil; S2, the bottom support controls the servo motor 36 to drive the worm 35 to rotate so that the worm wheel 34 meshes and links, and then the lead screw 33 is threaded and linked, and the rack 32 is driven to move, so that the linkage gear 31 is meshed and linked, and the active rod 22 is driven to rotate through the linkage gear 31, and the first driven rod 23 and the second driven rod 24 are driven to link synchronously, and then the coil tray 25 is driven to move until the coil tray 25 moves to the bottom of the transformer coil; S3, coil hoisting, after the bottom of the transformer coil is supported by the coil tray 25, the transformer coil is hoisted by the hoisting frame 1 as a whole and the combination of external equipment.

[0049] The present application guides the operation through S1, S2, and S3, so that the transformer coil can be quickly docked with the lifting frame 1, and is lifted in the lifting frame 1 through the coil tray 25, avoiding lifting on the top of the transformer coil, effectively reducing the damage rate of the transformer coil, and at the same time using the clamping plate 42 to support the transformer coil around to prevent the transformer coil from shaking during lifting.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A transformer winding coil lifting equipment, characterized in that: include: A lifting frame (1), the lifting frame (1) being in the form of a rectangular frame structure as a whole, and the transformer coil being located inside the lifting frame (1); A supporting mechanism (2) for supporting a transformer coil, wherein the supporting mechanism (2) is arranged on the lifting frame (1), the supporting mechanism (2) comprising a base (21), an active rod (22), a first driven rod (23), a second driven rod (24) and a coil tray (25), wherein the base (21) is fixed to the bottom of the lifting frame (1), one end of the active rod (22) is rotatably connected to the base (21), one end of the first driven rod (23) and the second driven rod (24) are rotatably connected to each other, and two groups are provided, and the two groups are combined to form a diamond structure, the other end of the first driven rod (23) is rotatably connected to an end of the active rod (22) away from the base (21), and the other end of the second driven rod (24) is rotatably connected to the coil tray (25); A linkage mechanism (3) used for driving the active rod (22) to move in linkage, and the linkage mechanism (3) is arranged on the base (21); A limiting mechanism (4), wherein the limiting mechanism (4) is arranged on the hoisting frame (1), and the limiting mechanism (4) is used to limit the transformer coil.

2. The transformer winding coil lifting equipment according to claim 1, characterized in that: The supporting mechanism (2) further comprises a linkage rod (26), a first transmission rod (27), a passive rod (28) and a second transmission rod (29); one end of the linkage rod (26) is rotatably connected to a side wall of the base (21); the other end of the linkage rod (26) is rotatably connected to a connection between the first driven rod (23) and the second driven rod (24); one end of the first transmission rod (27) is fixed to a connection end between the linkage rod (26) and the base (21); one end of the passive rod (28) is rotatably connected to an end of the first transmission rod (27) away from the linkage rod (26); the center of the second transmission rod (29) is rotatably connected to an end of the linkage rod (26) away from the base (21); the other end of the passive rod (28) is rotatably connected to one end of the second transmission rod (29).

3. The transformer winding coil lifting equipment according to claim 2, characterized in that: The linkage rod (26) and the passive rod (28) are parallel to each other, and the coil tray (25) is in a horizontal state.

4. The transformer winding coil lifting equipment according to claim 2, characterized in that: The supporting mechanism (2) further comprises an adjusting rod (210) and a third transmission rod (211); one end of the adjusting rod (210) and the third transmission rod (211) are rotatably connected to each other; the other end of the adjusting rod (210) is rotatably connected to an end of the second transmission rod (29) away from the passive rod (28); and the other end of the third transmission rod (211) is fixed to the coil tray (25).

5. The transformer winding coil lifting equipment according to claim 1, characterized in that: The linkage mechanism (3) comprises a linkage gear (31), a rack (32) and a screw rod (33); the linkage gear (31) is fixed to the rotationally connected end of the active rod (22) and the base (21); a notch is provided on the base (21) at one side close to the linkage gear (31); the rack (32) is slidably engaged in the notch of the base (21) and meshes with the linkage gear (31); the screw rod (33) is fixed to one end of the rack (32); the screw rod (33) passes through the base (21) and is slidably connected to the base (21).

6. The transformer winding coil lifting equipment according to claim 5, characterized in that: The linkage mechanism (3) further comprises a worm wheel (34), a worm (35) and a servo motor (36); the worm wheel (34) is rotatably connected to one side of the base (21); a screw hole is provided through the center of the worm wheel (34); the screw rod (33) is threadedly engaged in the screw hole; the servo motor (36) is fixed to the top of the base (21); the worm (35) is coaxially fixed to the output shaft of the servo motor (36) and meshes with the worm wheel (34).

7. The transformer winding coil lifting equipment according to claim 1, characterized in that: The limiting mechanism (4) comprises a guide rod (41), a clamping plate (42) and a reset member (43); the guide rod (41) passes through the hoisting frame (1) and is slidably connected to the hoisting frame (1); the clamping plate (42) is fixed to one end of the guide rod (41) and abuts against the transformer coil; the reset member (43) is sleeved on the guide rod (41), and one end of the reset member (43) abuts against the clamping plate (42) and the other end abuts against the hoisting frame (1).

8. The transformer winding coil lifting equipment according to claim 7, characterized in that: A limiting disk (44) is coaxially fixed to one end of the guide rod (41) away from the clamping plate (42); the limiting disk (44) has a larger diameter than the guide rod (41).

9. The transformer winding coil lifting equipment according to claim 7, characterized in that: The bottom of the clamping plate (42) is provided with an arc-shaped curved structure.

10. A lifting method, applied to a transformer winding coil lifting device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, cover the coil, move the lifting frame (1) to the top of the transformer coil to be lifted, and then slowly lower the lifting frame (1) until the clamping plate (42) abuts against the coil, and slides through the guide rod (41) under the action of the limit, and adheres to the outside of the coil; S2, bottom support, control the servo motor (36) to drive the worm (35) to rotate so that the worm wheel (34) meshes and links, thereby causing the lead screw (33) to thread and link, and drive the rack (32) to move, so that the linkage gear (31) meshes and links, and drive the active rod (22) to rotate through the linkage gear (31), and drive the first driven rod (23) and the second driven rod (24) to synchronously link, thereby driving the coil tray (25) to move, until the coil tray (25) moves to the bottom of the transformer coil; S3, coil hoisting, after the bottom of the transformer coil is supported by the coil tray (25), the transformer coil is hoisted by the hoisting frame (1) as a whole and the combination of external equipment.

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