Stator bar hoisting device

Abstract

This invention discloses a stator bar hoisting device, comprising: a lifting frame including a central column and a lifting beam rotatably connected to the central column; a horizontally movable electric hoist is mounted on the lifting beam; two horizontally movable telescopic rods are mounted on the lifting beam, the telescopic rods being parallel to the central column; a rotating assembly including a fixed frame connected to the lower ends of the electric hoist and the two telescopic rods; a rotatable fixed plate connected to the fixed frame; multiple clamping assemblies mounted on the fixed plate, the clamping assemblies being used to fix the stator bars; and a driving assembly for driving the fixed plate to rotate. This invention, by setting up a central column, lifting beam, electric hoist, and fixed plate, not only allows the central column to be located outside the stator, but also allows the direction of the stator bars to be adjusted via the fixed plate, which is more conducive to the installation of the stator bars.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stator bar construction. More particularly, the present application relates to a stator bar hoisting device. BACKGROUND

[0002] The stator of a large hydroelectric generating unit is limited by transportation size and weight, and is delivered as scattered parts such as a stator frame, stator iron sheets, and stator bars. The stator is assembled into a whole at a construction site through a series of construction procedures, and then the stator iron sheets are stacked in the stator, and the stator bars are embedded on site after the stator magnetization test is passed. In order to avoid the risk of the stator bar and copper ring falling during the stator bar embedding assembly, a hoisting device needs to be used for construction. A patent with application number "202310208428.4" discloses a generator stator bar hoisting device. The patent includes a counterweight seat, a motor one is embedded in the counterweight seat, a rotating rod is fixed to the output shaft end of the motor one, and a horizontal plate is arranged on the rotating rod to drive the horizontal plate to rotate. However, the rotating rod of the device is arranged in the stator and needs to be coaxially arranged with the stator, which affects the winding of the stator bar. SUMMARY

[0003] The present application provides a stator bar hoisting device, which sets the center column outside the stator by setting the center column, the hoisting beam, the electric hoist, and the fixing disc, and adjusts the direction of the stator bar through the fixing disc, which is more conducive to the installation of the stator bar.

[0004] In order to achieve these objects and other advantages of the present application, a stator bar hoisting device is provided, which comprises:

[0005] A hoisting frame comprising a center column, a hoisting beam rotatably connected to the center column, an electric hoist movably arranged on the hoisting beam, and two telescopic rods movably arranged on the hoisting beam and parallel to the center column;

[0006] A rotating assembly comprising a fixing frame connected to the electric hoist and the lower ends of the two telescopic rods, and a rotatable fixing disc connected to the fixing frame;

[0007] A plurality of clamping assemblies arranged on the fixing disc, the clamping assemblies being used for fixing the stator bars;

[0008] A driving assembly for driving the fixing disc to rotate, wherein when the fixing disc moves to a pre-installation position, the fixing disc is driven by the driving assembly to rotate to a position where the stator bar clamped by one of the clamping assemblies is above a pre-installation bar slot, and the fixing disc is further moved downward to a position where the stator bar is in the bar slot.

[0009] Preferably, a fixed cylinder is rotatably connected to the central column, and the lifting beam is connected to the top end of the fixed cylinder so that the lifting beam is rotatably connected to the central column.

[0010] Preferably, the electric hoist is provided with fixing blocks on both sides, one end of the two telescopic rods is connected to the two fixing blocks respectively, and the other end is connected to the fixing frame.

[0011] Preferably, the fixing frame is provided with a connecting cylinder, the inner wall of the connecting cylinder is recessed at intervals to form a plurality of annular fixing grooves, the fixing plate is provided with a connecting rod, the upper part of the connecting rod is provided with a plurality of annular protrusions at intervals, and the plurality of annular protrusions are rotatably located in the plurality of fixing grooves in a corresponding manner.

[0012] The connecting rod is provided with a plurality of first meshing teeth in the circumferential direction, and the fixed frame is provided with two first rotary motors. The ends of the first rotary motors are provided with first gears, and both first gears mesh with the first meshing teeth to drive the connecting rod to rotate.

[0013] Preferably, the clamping assembly includes a fixed plate connected to the fixed disk, two support plates arranged parallel to each other on the fixed plate, and a positioning block connected between the two support plates. The positioning block has a hollow structure and an elongated opening at its lower end. A drive rod is rotatably mounted inside the positioning block. The drive rod has a bidirectional thread and two nuts on it. A support rod is mounted on each nut. The support rod passes through the opening and extends out of the positioning block. A horizontal rod is connected to the lower end of the support rod. Two horizontal rods are arranged parallel to each other. One horizontal rod has two positioning rods, and the other horizontal rod has two positioning cylinders. The inner diameter of the positioning cylinder is larger than the diameter of the positioning rod so that the two positioning cylinders can accommodate the two positioning rods one-to-one. The drive rod has multiple second meshing teeth circumferentially. The positioning block has a drive plate that can move up and down. The drive plate has multiple third meshing teeth spaced vertically. The third meshing teeth mesh with the second meshing teeth to drive the drive rod to rotate. The lower part of the drive plate passes through the positioning block and is located between the two horizontal rods.

[0014] Preferably, the lower part of the support plate is provided with a limiting block, and the distance between the two limiting blocks is slightly larger than the size of the stator bar to fix the stator bar.

[0015] Preferably, the fixed plate has a through hole, and the upper end of the drive plate has a push rod, the upper end of the push rod passing through the through hole to drive the drive plate to move downward.

[0016] Preferably, it also includes multiple positioning components, which are arranged one-to-one with multiple clamping components. Each positioning component includes a connecting hole that passes through the fixed plate. A sliding rod that can slide up and down is provided in the connecting hole. A counterweight is provided at the upper end of the sliding rod. A crossbar is provided at the lower end of the sliding rod. A U-shaped rod is provided at the lower end of the crossbar. The U-shaped rod is lower than the lower end of the support plate. When the fixed plate rotates to the position of the pre-installed wire rod groove, the wire rod groove is located inside the U-shaped rod.

[0017] Preferably, the side wall of the fixed cylinder is provided with a triangular plate, which is connected to the lifting beam.

[0018] The present invention has at least the following beneficial effects:

[0019] First, by setting up a central column, lifting beam, electric hoist, and fixing plate, this invention not only allows the central column to be located outside the stator, but also allows the direction of the stator bars to be adjusted through the fixing plate, which is more conducive to the installation of the stator bars. By setting up multiple clamping components, multiple stator bars can be hoisted at the same time without interference during construction, thus improving construction efficiency. At the same time, by rotating the fixing plate through the drive component to adjust the installation direction of the stator bars, manual adjustment can be reduced, thus improving work efficiency.

[0020] Secondly, by setting a fixing groove and a protrusion, the present invention not only enables the fixing plate to rotate relative to the fixing frame, but also improves the stability of the connection between the connecting rod and the connecting cylinder so that the fixing plate can simultaneously lift multiple stator bars.

[0021] Third, when the fixed plate is moved to the pre-installed bar slot, the fixed plate is rotated so that one of the U-shaped rods rests on both sides of the pre-installed bar slot. This indicates that the stator bar is now above the pre-installed bar slot. The fixed plate continues to move downward, the stator bar moves downward, and the fixed plate moves downward relative to the sliding rod. After the stator bar is installed, the fixed plate moves upward until it contacts the counterweight. The electric hoist and rotating lifting beam are then moved, and the positioning component separates from the stator. This invention, by setting a positioning component, facilitates observation of whether the stator bar is above the pre-installed bar slot, thereby improving the accuracy of stator bar installation and increasing construction efficiency.

[0022] Fourth, in this invention, when the clamping assembly clamps the stator bar, the upper end of the stator bar is positioned below the positioning block. The fixing plate is moved downwards, and the lower end of the drive plate contacts the stator bar. The drive plate drives the drive rod to rotate, causing the positioning rod and the positioning cylinder to move relative to each other until the two horizontal rods clamp the stator bar. Then, when the stator bar is moved above the bar slot and part of the stator bar is located in the bar slot, the drive plate is manually driven downwards to the stator bar until the two horizontal rods move away from each other. The manual continues to move the stator bar downwards. This invention achieves the clamping of the stator bar by setting the drive rod, positioning rod, nut, second meshing tooth, and drive plate to drive the drive rod to rotate and drive the two horizontal rods to move.

[0023] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the stator bar hoisting device according to one of the technical solutions of the present invention;

[0025] Figure 2 This is a schematic diagram of the stator bar hoisting device according to one of the technical solutions of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0027] Figure 4 This is a schematic diagram of the clamping component according to one of the technical solutions of the present invention;

[0028] Figure 5 This is a schematic diagram of the positioning rod according to one of the technical solutions of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the U-shaped rod according to one of the technical solutions of this invention. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0031] like Figures 1-6 As shown, the present invention provides a stator bar hoisting device, comprising:

[0032] The lifting frame includes a central column 9 and a lifting beam 4 rotatably connected to the central column 9. The lifting beam 4 is equipped with a horizontally movable electric hoist 14 and two horizontally movable telescopic rods 16 on the lifting beam 4. The telescopic rods 16 are arranged parallel to the central column 9.

[0033] The rotating assembly includes a fixed frame 17 that is connected to the lower ends of the electric hoist 14 and the two telescopic rods 16, and the fixed frame 17 is connected to a rotatable fixed plate 5;

[0034] Multiple clamping components are disposed on the fixing plate 5, and the clamping components are used to fix the stator bars;

[0035] A drive assembly is used to drive the fixed disk 5 to rotate. When the fixed disk 5 moves to the pre-installation position, the drive assembly drives the fixed disk 5 to rotate until one of the clamping components holds the stator bar above the pre-installation bar groove 2, and causes the fixed disk 5 to continue to move downward until the stator bar is located in the bar groove 2.

[0036] In this technical solution, the stator 1 is provided with a support 3, the central column 9 is vertically mounted on the support 3, the lifting beam 4 is horizontally mounted, the lifting beam 4 is provided with a guide rail, the electric hoist 14 is slidably mounted on the guide rail, the telescopic rod 16 is vertically mounted, the telescopic rod 16 is connected to the electric hoist 14 to move horizontally along the lifting beam 4 via the electric hoist 14, and the lifting rope of the electric hoist 14 is located between the two telescopic rods 16; the fixed plate 5 is located below the fixed frame 17, and the fixed plate 5 can rotate around the central axis of the fixed plate 5 relative to the fixed frame 17; the end of the lifting beam 4 is provided with a balance block 10; multiple clamping components are equally spaced along the circumference of the fixed plate 5; multiple first galvanized steel plates 11 are spaced apart on the support 3, and the first galvanized steel plates 11 are connected to the lower part of the central column 9 to fix the central column 9.

[0037] During use, the stator bars are fixed to the clamping assembly outside the stator 1. The lifting beam 4 is rotated until the stator bars are inside the stator 1. The lifting crossbar is rotated and the electric hoist 14 is moved until the fixed plate 5 is located at the pre-installed bar slot 2. Then, the fixed plate 5 is driven to rotate by the drive assembly until the stator bars held by one of the clamping assemblies are above the pre-installed bar slot 2. The lifting rope of the electric hoist 14 drives the fixed plate 5 to move downward until the stator bars are inside the bar slot 2. After the bar slot 2 is installed, the center column 9 is rotated and the electric hoist 14 is adjusted until the fixed plate 5 is located at the next pre-installed bar slot 2. This operation is repeated until the stator bars on multiple clamping assemblies are installed in the bar slot 2. Then, the center column 9 is rotated until the fixed plate 5 is outside the stator 1, and the stator bars are fixed to the clamping assembly. Finally, the stator bars are installed in the bar slot 2.

[0038] By adopting this technical solution, the present invention, through the setting of a central column 9, a lifting beam 4, an electric hoist 14, and a fixing plate 5, not only can the central column 9 be placed outside the stator 1, but the direction of the stator bars can also be adjusted through the fixing plate 5, which is more conducive to the installation of the stator bars. By setting multiple clamping components, multiple stator bars can be hoisted at the same time, and the stator bars do not interfere with each other during construction, improving construction efficiency. At the same time, by rotating the fixing plate 5 through the drive component to adjust the installation direction of the stator bars, manual adjustment can be reduced, improving work efficiency.

[0039] In another technical solution, a fixed cylinder 13 is rotatably connected to the central column 9 (the fixed cylinder 13 is coaxially arranged with the central column 9, and the fixed cylinder 13 is rotatably connected to the central shaft via a bearing; or multiple annular first slide rails are spaced vertically on the central column 9, and multiple first sliders are spaced on the first slide rails, with the first sliders connected to the fixed cylinder 13 to achieve a rotatable connection between the central column 9 and the fixed cylinder 13). The lifting beam 4 is connected to the top end of the fixed cylinder 13 to achieve a rotatable connection between the lifting beam 4 and the central column 9. Multiple fourth meshing teeth are spaced circumferentially at the lower part of the fixed cylinder 13. A support frame is provided on the central column 9, and two second rotary motors are provided on the support frame. The second rotary motors are equipped with second gears, which mesh with the fourth meshing teeth to drive the fixed cylinder 13 to rotate. This technical solution achieves a rotatable connection between the lifting beam 4 and the central column 9.

[0040] In another technical solution, the electric hoist 14 is provided with fixing blocks 15 on both sides, and one end of each of the two telescopic rods 16 is connected to the two fixing blocks 15, while the other end is connected to the fixing frame 17. This technical solution allows the telescopic rods 16 to move horizontally relative to the lifting beam 4.

[0041] In another technical solution, the fixing frame 17 is provided with a connecting cylinder 23. The inner wall of the connecting cylinder 23 is recessed to form multiple annular fixing grooves. The fixing grooves are coaxially arranged with the connecting cylinder 23. The multiple fixing grooves are arranged vertically along the connecting cylinder 23. The connecting cylinder 23 is vertically arranged. The fixing plate 5 is provided with a connecting rod 25. The connecting rod 25 is vertically arranged. The upper part of the connecting rod 25 is provided with multiple annular protrusions 24 at intervals. The protrusions 24 are coaxially arranged with the connecting rod 25. The multiple annular protrusions 24 are rotatably located in the multiple fixing grooves one by one. One way of rotation is that the size of the protrusion 24 is slightly smaller than the size of the fixing groove. At the same time, a second slide rail is provided at the bottom of the fixing groove. Multiple second sliders are slidably arranged on the second slide rail. The multiple second sliders are connected to the corresponding protrusions 24.

[0042] The connecting rod 25 is provided with a plurality of first meshing teeth 26 circumferentially. The fixing frame 17 is provided with two first rotary motors 18. The end of the first rotary motor 18 is provided with a first gear 19 (the output shaft of the first rotary motor 18 is vertically arranged, and the central axis of the first gear 19 is vertically arranged). Both first gears 19 mesh with the first meshing teeth 26 to drive the connecting rod 25 to rotate. By adopting this technical solution, the present invention, by setting the fixing groove and the protrusion 24, not only can the fixing plate 5 be rotated relative to the fixing frame 17, but also the stability of the connection between the connecting rod 25 and the connecting cylinder 23 can be improved so that the fixing plate 5 can simultaneously lift multiple stator bars.

[0043] In another technical solution, the clamping assembly includes a fixing plate 6 connected to the fixing disk 5. The fixing plate 6 is horizontally arranged, and two support plates 28 are arranged parallel to each other on the fixing plate 6. The support plates 28 are vertically arranged, and a positioning block 29 is connected between the two support plates 28. The positioning block 29 has a hollow structure and an elongated opening at its lower end. The opening is horizontally arranged, and a drive rod 30 is rotatably arranged inside the positioning block 29. The drive rod 30 is horizontally arranged and has a bidirectional thread. The drive rod 30 is provided with two nuts (the threads of the drive rod 30 corresponding to the two nuts are opposite). A support rod 35 is provided on the nut. The support rod 35 is vertically arranged and passes through the opening and extends out of the positioning block 29. (A third slide rail is provided inside the positioning block 29. The third slide rail is arranged along the length direction of the drive rod 30, and two third sliders are slidably arranged on the third slide rail. The two third sliders are respectively connected to the two nuts one by one.) The lower end of the support rod 35 is connected to a horizontal rod 36. The two horizontal rods 36 are arranged in parallel. One horizontal rod 36 is provided with two positioning rods 38, and the other horizontal rod 36 is provided with two positioning cylinders 37 (the two positioning rods 38 are arranged one-to-one with the two horizontal rods 36). The inner diameter of the positioning cylinder 37 is larger than the diameter of the positioning rod 38 so that the two positioning cylinders 37 can accommodate the two positioning rods 38 one-to-one. The drive rod 30 is provided with a plurality of second meshing teeth 31 in the circumferential direction (the threads of the drive rod 30 on both sides of the second meshing teeth 31 rotate in opposite directions). The positioning block 29 is provided with a drive plate 33 that can move up and down (the upper and lower ends of the drive plate 33 extend out of the positioning block 29). The drive plate 33 is provided with a plurality of third meshing teeth 32 spaced vertically. The third meshing teeth 32 mesh with the second meshing teeth 31 to drive the drive rod 30 to rotate. The lower part of the drive plate 33 passes through the positioning block 29 and is located between the two horizontal rods 36. Using this technical solution, when the clamping assembly clamps the stator bar, the upper end of the stator bar is positioned below the positioning block 29, the fixing plate 5 is moved downwards, the lower end of the drive plate 33 contacts the stator bar, and the drive plate 33 drives the drive rod 30 to rotate, causing the positioning rod 38 and the positioning cylinder 37 to move relative to each other until the two horizontal rods 36 clamp the stator bar. Then, when the stator bar is moved above the bar groove 2 and part of the stator bar is located in the bar groove 2, the drive plate 33 is manually driven downwards to the stator bar until the two horizontal rods 36 move away from each other, and the manual continues to move the stator bar downwards. This invention achieves the clamping of the stator bar by setting the drive rod 30, the positioning rod 38, the nut, the second meshing tooth 31, and the drive plate 33 to drive the drive rod 30 to rotate and drive the two horizontal rods 36 to move.

[0044] In another technical solution, the lower part of the support plate 28 is provided with limiting blocks 39, and the distance between the two limiting blocks 39 is slightly larger than the size of the stator bar to fix the stator bar. This technical solution achieves the limitation of the stator bar, making it easier for the clamping assembly to clamp the stator bar.

[0045] In another technical solution, the fixed plate 6 has a through hole (through from top to bottom), and the upper end of the drive plate 33 has a push rod 7. The upper end of the push rod 7 passes through the through hole to drive the drive plate 33 to move downward. This technical solution facilitates the worker in driving the drive plate 33 downward.

[0046] In another technical solution, multiple positioning components are also included, with each positioning component corresponding to a clamping component. Each positioning component includes a connecting hole (through-the-top and bottom) that passes through the fixed plate 5. A sliding rod 20 that can slide up and down is provided in the connecting hole (the diameter of the connecting hole is larger than the diameter of the sliding rod 20). A counterweight 8 is provided at the upper end of the sliding rod 20, and a crossbar is provided at the lower end of the sliding rod 20. A U-shaped rod 34 is provided at the lower end of the crossbar. The U-shaped rod 34 is lower than the lower end of the support plate 28. When the fixed plate 5 rotates to the position of the pre-installed wire bar groove 2, the wire bar groove 2 is located inside the U-shaped rod 34. Using this technical solution, when the fixed plate 5 is moved to the pre-installed bar slot 2, the fixed plate 5 is rotated so that one of the U-shaped rods 34 rests on both sides of the pre-installed bar slot 2. At this time, it indicates that the stator bar is already above the pre-installed bar slot 2. The fixed plate 5 continues to move downward, the stator bar moves downward, and the fixed plate 5 moves downward relative to the sliding rod 20. After the stator bar is installed, the fixed plate 5 moves upward until it contacts the counterweight 8. The electric hoist 14 is moved and the lifting beam 4 is rotated, and the positioning component separates from the stator. This invention improves the accuracy of stator bar installation and increases construction efficiency by setting a positioning component to facilitate observation of whether the stator bar is above the pre-installed bar slot 2.

[0047] In another technical solution, a triangular plate 12 is provided on the side wall of the fixed cylinder 13, and the triangular plate 12 is connected to the lifting beam 4. With this technical solution, the triangular plate 12 provides support for the lifting beam 4, thereby improving the stability of the lifting beam 4.

[0048] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the stator bar hoisting device of this invention will be readily apparent to those skilled in the art.

[0049] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A stator bar hoisting device, characterized by The utility model relates to a kind of crane, including: Hoist frame, including center column, with the center column rotation connection hoist crossbeam, the hoist crossbeam is equipped with movable electric hoist, the hoist crossbeam is equipped with two telescopic rods, the telescopic rod is horizontally movable along it, the telescopic rod is arranged in parallel with the center column; Rotary assembly, including the electric hoist, two telescopic rod lower end common connection fixed frame, the fixed frame is connected with rotatable fixed disc; Multiple clamping assemblies, multiple clamping assemblies are equipped in the fixed disc, and the clamping assembly is used to fix stator bar; Drive assembly, for driving the fixed disc rotation, wherein, when the fixed disc moves to pre-installation position, by the drive assembly drive the fixed disc rotates to one of the clamping assemblies clamped stator bar is located above pre-installation bar slot, and make the fixed disc continue to move down to stator bar is located in bar slot; The clamping assembly includes a fixed plate connected to the fixed disc, two support plates are arranged in parallel on the fixed plate, a positioning block is connected between the two support plates, the positioning block is a hollow structure, a long strip-shaped opening is provided at the lower end of the positioning block, a drive rod is rotatably arranged in the positioning block, the drive rod has a bidirectional thread, two nuts are provided on the drive rod, a support rod is provided on the nut, the support rod passes through the opening and extends out of the positioning block, a horizontal rod is connected to the lower end of the support rod, two horizontal rods are arranged in parallel, one of the horizontal rods is provided with two positioning rods, the other horizontal rod is provided with two positioning cylinders, the inner diameter of the positioning cylinder is larger than the diameter of the positioning rod so that the two positioning cylinders can accommodate the two positioning rods one by one, the drive rod is provided with a plurality of second engagement teeth circumferentially, a drive plate is movably arranged in the positioning block, a plurality of third engagement teeth are arranged on the drive plate in an upper and lower spaced manner, the third engagement teeth are engaged with the second engagement teeth to drive the drive rod to rotate, the lower part of the drive plate passes through the positioning block and is located between the two horizontal rods; The lower part of the support plate is provided with a limiting block, and the distance between the two limiting blocks is slightly larger than the size of the stator bar to fix the stator bar; A through hole is provided on the fixed plate, a push rod is provided at the upper end of the drive plate, and the upper end of the push rod passes through the through hole to drive the drive plate to move downward; It also includes a plurality of positioning assemblies, which are arranged one by one with the plurality of clamping assemblies, the positioning assembly includes a connecting hole provided through the fixed disc, a sliding rod is movably arranged in the connecting hole, a counterweight is provided at the upper end of the sliding rod, a horizontal rod is provided at the lower end of the sliding rod, and a U-shaped rod is provided at the lower end of the horizontal rod, wherein the U-shaped rod is lower than the lower end of the support plate, when the fixed disc rotates to the pre-installation bar slot position, the bar slot is located in the U-shaped rod.

2. A stator bar hoisting arrangement according to claim 1, characterised in that The center column is rotatably connected with a fixed cylinder, and the top end of the hoist crossbeam is connected with the fixed cylinder so that the hoist crossbeam is rotatably connected with the center column.

3. The stator bar hoisting arrangement of claim 1, wherein Fixed blocks are provided on both sides of the electric hoist, one end of each of the two telescopic rods is connected with the two fixed blocks, and the other end is connected with the fixed frame.

4. The stator bar hoisting arrangement of claim 1, wherein The fixing frame is provided with a connecting cylinder, the inner wall of the connecting cylinder is recessed to form a plurality of annular fixing grooves, the fixing disc is provided with a connecting rod, a plurality of annular protrusions are arranged at the upper part of the connecting rod in one-to-one correspondence and rotate in the plurality of fixing grooves; The connecting rod is provided with a plurality of first meshing teeth in the circumferential direction, the fixing frame is provided with two first rotary motors, the end of the first rotary motor is provided with a first gear, and the two first gears are engaged with the first meshing teeth to drive the connecting rod to rotate.

5. The stator bar hoisting arrangement of claim 2 wherein, The fixing cylinder side wall is provided with a triangular plate, and the triangular plate is connected with the hoisting cross beam.

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