A power plant steam turbine stator overhauling lifting device

Abstract

The present application relates to the technical field of steam turbine stator overhaul lifting appliance, in particular to a power plant steam turbine stator overhaul lifting appliance, which comprises a first overhaul lifting structure and a second overhaul lifting structure, the side end of the first overhaul lifting structure is fixedly connected with the second overhaul lifting structure, and the first overhaul lifting structure and the second overhaul lifting structure are the same in structure; the first overhaul lifting structure comprises a control pushing component and a lifting control component, the lower end of the control pushing component is slidingly connected with the lifting control component, the control pushing component comprises a limiting frame, a support pedestal, a pushing rod and a hydraulic control seat, the center side end of the hydraulic control seat is telescopically connected with the pushing rod, the side end edge position of the hydraulic control seat is fixedly connected with the support pedestal, the support pedestal is fixedly connected with the limiting frame, and the lifting control component comprises a support rotating mechanism and a lifting connecting mechanism. Through the setting of the first overhaul lifting structure and the second overhaul lifting structure, the steam turbine stator overhaul lifting work is facilitated.

Description

A hoisting tool for overhauling the stator of a power plant steam turbine Technical Field

[0001] This invention relates to the field of turbine stator maintenance lifting tools, specifically a turbine stator maintenance lifting tool for power plants. Background Technology

[0002] A steam turbine, also known as a steam engine, is a rotary steam power unit. High-temperature, high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor, which is equipped with rows of blades, to rotate and perform work. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship propulsion systems. The turbine stator is a crucial component of the steam turbine, and lifting tools are required when overhauling or repairing it.

[0003] According to Chinese Patent Publication No. CN115744602A, a turbine stator maintenance lifting tool for power plants is disclosed, including a suspension beam. Support columns are fixedly installed on the lower surface of the bottom of the suspension beam. A drive motor is fixedly connected to one side of the top of the suspension beam, and a mounting plate is fixedly connected to the other side of the top of the suspension beam. A rotating rod is connected through the interior of the mounting plate. The tool also includes a right end fixedly connected to the output end of the drive motor, and a lifting rope wound around the outer side of the rotating rod. A base is fixedly connected to the bottom of the support columns. Support legs are fixedly installed at the bottom of the base, and a hook is fixedly connected to one end of the lifting rope. This turbine stator maintenance lifting tool for power plants can avoid causing clamping marks on the turbine stator due to excessive clamping force, prevent the turbine stator from swaying during lifting, and effectively improve the stability of the device during lifting.

[0004] Currently, existing power plant turbine stator maintenance lifting tools are not convenient for labor-saving design during use, which affects their long service life. They are also inconvenient for adjusting rotation position. Therefore, improvements are needed to address these issues. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a hoisting tool for overhauling the stator of a power plant steam turbine.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a stator maintenance hoist for a power plant steam turbine, including a first maintenance hoisting structure and a second maintenance hoisting structure, wherein the second maintenance hoisting structure is fixedly connected to the side end of the first maintenance hoisting structure, and the first maintenance hoisting structure and the second maintenance hoisting structure have the same structure.

[0007] The first maintenance hoisting structure includes a control pushing component and a hoisting control component. The lower end of the control pushing component is slidably connected to the hoisting control component. The control pushing component includes a limit frame, a support base, a push rod, and a hydraulic control seat. The push rod is telescopically connected to the center side end of the hydraulic control seat. The support base is fixedly connected to the side edge of the hydraulic control seat. The limit frame is fixedly connected to the support base. The hoisting control component includes a support rotation mechanism and a hoisting connection mechanism. The lower end of the support rotation mechanism is limited and connected to the hoisting connection mechanism. Through the structural configuration of the control pushing component, the push rod inside the control pushing component is fixedly connected to the adapter slot frame. The extension and retraction of the push rod is controlled by the hydraulic control seat to change the position of the hoisting control component on the control pushing component. The adapter slot frame is limited and connected to the limit frame and the support base. Under the push of the push rod, the position of the hoisting control component can be adjusted, thereby facilitating the transmission control work of the turbine stator.

[0008] Specifically, the supporting rotation mechanism includes a top plate, an adapter slot frame, a base plate, a first gear plate, a second gear plate, a stepper motor, and a support reinforcement frame. The adapter slot frame is fixedly connected to the lower center of the top plate, and the support reinforcement frame is fixedly connected to the lower side of the top plate. The base plate is fixedly connected to the lower ends of the adapter slot frame and the support reinforcement frame. The first gear plate is rotatably connected to the lower center of the base plate, and the second gear plate is meshed with the side of the first gear plate. The stepper motor is pressed against the upper end of the second gear plate.

[0009] Specifically, the stepper motor is fixedly supported by the chassis, and the stepper motor drives the first gear plate to rotate through the second gear plate. The adapter slot is slidably connected on the limiting frame and the support base.

[0010] Specifically, the hoisting connection mechanism includes a docking frame, a support fixing plate, a spring shock absorber, a fixed support block, a side support plate, a connecting guide frame, a first pulley, a first connecting steel rope, a hook, and a second pulley. The lower end of the docking frame is fixedly connected to the support fixing plate, the side end of the support fixing plate is fixedly connected to the side support plate, the lower end of the side support plate is fixedly connected to the connecting guide frame, and the lower end of the connecting guide frame is equipped with the first pulley. Through a support rotation mechanism, a stepper motor within the support rotation mechanism can control the rotation of the first gear plate via the second gear plate. The lower end of the first gear plate is connected to the support fixing plate through the docking frame. When the first gear plate is driven, the entire hoisting connection mechanism can rotate, facilitating... The turbine stator is repositioned, with a first pulley at the lower end of the connecting guide frame and a third pulley at the lower end of the connecting control guide rod. A second pulley connects the first and third pulleys via a first connecting steel rope, enabling pulling and dragging operations. This changes the position of the hook, allowing for height adjustment of the turbine stator. The second pulley, utilizing the principle of a movable pulley, reduces stress and prevents overload operation of the winding machine. Simultaneously, the winch, through the second connecting steel rope and the connecting reinforcement end frame, changes the position of the supporting side block. This supporting side block is connected to the turbine stator via the rope, providing auxiliary support and enhancing the stability of the turbine stator during maintenance.

[0011] Specifically, a first connecting steel rope is wound around the first pulley, and the center of the first connecting steel rope is bent and wound around the second pulley. A hook is fixedly connected to the lower end of the second pulley.

[0012] Specifically, the lower end of the support plate is provided with a spring damping rod, the lower end of the spring damping rod is limited and connected to a fixed support block, the lower end of the fixed support block is fixedly connected to a connecting control guide rod, and the lower end of the winding machine is rotatably connected to a third pulley.

[0013] Specifically, a winding machine is installed at the lower center of the support plate. The winding machine is used for winding control of the first connecting steel rope, which is also connected to a third pulley.

[0014] Specifically, a winch is fixedly connected to the side end of the side support plate, a second connecting steel rope is wound around the winch, a connecting reinforcement end frame is fixedly connected to the lower end of the second connecting steel rope, and a supporting side block is fixedly connected to the lower end of the connecting reinforcement end frame.

[0015] Specifically, the support fixing plate is fixedly connected to the first gear plate through a docking frame. When the first gear plate rotates, it drives the docking frame, the support fixing plate, and the side support plate to rotate as a whole, changing the position of the lower hook and the supporting side block.

[0016] Specifically, the winch changes the height of the supporting side block through the second connecting steel rope and the connecting reinforcement end frame, and the supporting side block provides auxiliary support for the turbine stator. The hook is connected to the turbine stator through the rope.

[0017] The beneficial effects of this invention are:

[0018] First, this invention controls the structural configuration of the pushing component, controls the push rod inside the pushing component to be fixedly connected to the adapter slot frame, controls the extension and retraction adjustment of the push rod through the hydraulic control seat, changes the position of the lifting control component on the pushing component, and limits the connection between the adapter slot frame and the limit frame and the support base. Under the push of the push rod, the position adjustment of the lifting control component can be controlled, thereby facilitating the transmission control of the turbine stator.

[0019] Second, this invention utilizes a supporting rotation mechanism. A stepper motor within this mechanism controls the rotation of a first gear disc via a second gear disc. The lower end of the first gear disc is connected to a supporting fixed disc via a connecting frame. When the first gear disc is driven, the entire hoisting and connecting mechanism rotates, facilitating the repositioning of the turbine stator. A first pulley is installed at the lower end of the connecting guide frame, and a third pulley is installed at the lower end of the connecting control guide rod. A second pulley connects the first and third pulleys via a first connecting steel rope, enabling pulling and dragging operations via the second pulley. This changes the position of the hook, allowing for height adjustment of the turbine stator. The second pulley, utilizing the principle of a movable pulley, reduces stress, preventing overload operation of the winding machine. Simultaneously, the winch changes the position of the supporting side block via the second connecting steel rope and the connecting reinforcement end frame. The supporting side block is connected to the turbine stator via the rope, achieving auxiliary support and enhancing the maintenance stability of the turbine stator. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0022] Figure 2 is a side view three-dimensional structural diagram of the main body in this invention;

[0023] Figure 3 is a perspective view of the first maintenance hoisting structure in this invention;

[0024] Figure 4 is a three-dimensional structural diagram of the control and pushing component from the front view in this invention;

[0025] Figure 5 is a perspective view of the lifting control component in this invention;

[0026] Figure 6 is a frontal perspective three-dimensional structural diagram of the supporting rotation mechanism in this invention;

[0027] Figure 7 is a perspective view of the hoisting connection mechanism in this invention;

[0028] Figure 8 is a perspective side view of the hoisting connection mechanism in this invention.

[0029] In the diagram: 1-First maintenance and hoisting structure, 2-Second maintenance and hoisting structure, 3-Control and pushing components, 4-Hoisting control components, 5-Limiting frame, 6-Supporting platform, 7-Propeller rod, 8-Hydraulic control seat, 9-Supporting rotation mechanism, 10-Hoisting connection mechanism, 11-Top plate, 12-Adaptive slot frame, 13-Chassis, 14-First gear plate, 15-Second gear plate, 16-Stepper motor, 17-Supporting reinforcement frame, 18-Dialing frame, 19-Supporting fixing plate, 20-Spring shock absorber rod, 21-Fixing block, 22-Side support plate, 23-Connecting guide frame, 24-First pulley, 25-First connecting steel rope, 26-Hook, 27-Second pulley, 28-Connecting control guide rod, 29-Winder, 30-Third pulley, 31-Supporting side block, 32-Connecting reinforcement end frame, 33-Second connecting steel rope, 34-Winch. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] The invention will be further described below with reference to the accompanying drawings.

[0032] Example

[0033] As shown in Figures 1-8, a power plant turbine stator maintenance hoisting tool of the present invention includes a first maintenance hoisting structure 1 and a second maintenance hoisting structure 2. The second maintenance hoisting structure 2 is fixedly connected to the side end of the first maintenance hoisting structure 1, and the first maintenance hoisting structure 1 and the second maintenance hoisting structure 2 have the same structure. By controlling the structural setting of the pushing component 3, the pushing rod 7 inside the pushing component 3 is fixedly connected to the adapter slot frame 12. The extension and retraction adjustment of the pushing rod 7 is controlled by the hydraulic control seat 8 to change the position of the hoisting control component 4 on the pushing component 3. The adapter slot frame 12 is limitedly connected to the limiting frame 5 and the support base 6. Under the push of the pushing rod 7, the position of the hoisting control component 4 can be adjusted, thereby facilitating the transmission control work of the turbine stator.

[0034] The first maintenance hoisting structure 1 includes a control pushing component 3 and a hoisting control component 4. The lower end of the control pushing component 3 is slidably connected to the hoisting control component 4. The control pushing component 3 includes a limit frame 5, a support platform 6, a push rod 7, and a hydraulic control seat 8. The push rod 7 is telescopically connected to the center side end of the hydraulic control seat 8. The support platform 6 is fixedly connected to the side edge of the hydraulic control seat 8. The limit frame 5 is fixedly connected to the support platform 6. The hoisting control component 4 includes a support rotation mechanism 9 and a hoisting connection mechanism 10. The hoisting connection mechanism 10 is limited and connected to the lower end of the support rotation mechanism 9. The first maintenance hoisting structure 1 and the second maintenance hoisting structure 2 can be used to hoist different turbine stators. First, the hoisting control component 4 is adjusted to a suitable position by the control pushing component 3. At this time, the hydraulic control seat 8 controls the extension and retraction of the push rod 7 to change the position of the hoisting control component 4 on the limit frame 5 and the support platform 6. Then, the turbine stator is hoisted by the hook 26 and the rope.

[0035] The supporting rotation mechanism 9 includes a top plate 11, an adapter slot frame 12, a base plate 13, a first gear plate 14, a second gear plate 15, a stepper motor 16, and a supporting reinforcement frame 17. The adapter slot frame 12 is fixedly connected to the lower center of the top plate 11, and the supporting reinforcement frame 17 is fixedly connected to the lower side of the top plate 11. The base plate 13 is fixedly connected to the lower ends of the adapter slot frame 12 and the supporting reinforcement frame 17. The first gear plate 14 is rotatably connected to the lower center of the base plate 13. The first gear plate 14 is rotatably connected to the lower side of the first gear plate 14. The second gear disk 15 is engaged with the first gear disk 14. The upper end of the second gear disk 15 presses against the stepper motor 16. When steering control is required, the stepper motor 16 can work and control the second gear disk 15 to rotate. The second gear disk 15 meshes with the first gear disk 14, driving the first gear disk 14 to rotate at the lower end of the chassis 13. This causes the first gear disk 14 to drive the hoisting connection mechanism 10 to rotate as a whole, thereby realizing the reversing adjustment of the turbine stator.

[0036] The stepper motor 16 is fixedly supported by the chassis 13, and the stepper motor 16 drives the first gear 14 to rotate through the second gear 15. The adapter slot 12 is slidably connected on the limit frame 5 and the support base 6.

[0037] The hoisting connection mechanism 10 includes a docking frame 18, a support fixing plate 19, a spring shock absorber 20, a fixed support block 21, a side support plate 22, a connecting guide frame 23, a first pulley 24, a first connecting steel rope 25, a hook 26, and a second pulley 27. The lower end of the docking frame 18 is fixedly connected to the support fixing plate 19, the side end of the support fixing plate 19 is fixedly connected to the side support plate 22, the lower end of the side support plate 22 is fixedly connected to the connecting guide frame 23, and the lower end of the connecting guide frame 23 is equipped with the first pulley 24. The turbine stator is hoisted by the hook 26 and the rope. At the same time, the rope can be wound on the supporting side block 31 to provide auxiliary support for the turbine stator. At this time, the winding machine 29 and the winch 34 can work. The winding machine 29 can control... The winding of the first connecting steel rope 25 causes it to drag the second pulley 27, changing the height of the hook 26. At the same time, the winch 34 pulls the position of the supporting side block 31 through the second connecting steel rope 33 and the connecting reinforcement end frame 32 to adjust the turbine stator, thereby lifting the turbine stator and placing it in the designated maintenance position. Then, the winding machine 29 controls the length of the first connecting steel rope 25. The first connecting steel rope 25 is limited at the top by the first pulley 24 and the third pulley 30, which provides support. The hook 26 and the second pulley 27 are used for the actual lifting work. The spring damping rod 20 and the fixed support block 21 facilitate the buffer protection of the connecting control guide rod 28 and the third pulley 30.

[0038] A first connecting steel rope 25 is wound around the first pulley 24, and the center of the first connecting steel rope 25 is bent and wound around the second pulley 27. A hook 26 is fixedly connected to the lower end of the second pulley 27.

[0039] The lower end of the support plate 19 is provided with a spring damping rod 20, the lower end of the spring damping rod 20 is limited and connected to a fixed support block 21, the lower end of the fixed support block 21 is fixedly connected to a connecting control guide rod 28, and the lower end of the winding machine 29 is rotatably connected to a third pulley 30.

[0040] A winding machine 29 is installed at the lower center of the support plate 19. The winding machine 29 is used for winding control of the first connecting steel rope 25. The first connecting steel rope 25 is also wound around the third pulley 30. Through the support rotation mechanism 9, the stepper motor 16 in the support rotation mechanism 9 can control the first gear plate 14 to rotate through the second gear plate 15. The lower end of the first gear plate 14 is connected to the support plate 19 through the docking frame 18. When the first gear plate 14 is driven, the hoisting connection mechanism 10 can be rotated as a whole, which facilitates the position change of the turbine stator. The lower end of the connecting guide 23 is provided with the first pulley 24, and the lower end of the connecting control guide rod 28 is provided with the third pulley 30. The first pulley 24 and the third pulley 30 are connected by a first connecting steel rope 25 to a second pulley 27. The second pulley 27 can be used for pulling and dragging, thereby changing the position of the hook 26 and adjusting the height of the turbine stator. The second pulley 27 is designed to reduce the force on the turbine stator by using the principle of a movable pulley, thus avoiding overload operation of the winding machine 29. At the same time, the winch 34 changes the position of the supporting side block 31 through the second connecting steel rope 33 and the connecting reinforcement end frame 32. The supporting side block 31 can be connected and supported to the turbine stator through the rope, achieving the purpose of auxiliary support and thus enhancing the maintenance stability of the turbine stator.

[0041] A winch 34 is fixedly connected to the side end of the side support plate 22. A second connecting steel rope 33 is wound and connected to the winch 34. A connecting reinforcement end frame 32 is fixedly connected to the lower end of the second connecting steel rope 33. A supporting side block 31 is fixedly connected to the lower end of the connecting reinforcement end frame 32. The winch 34 can control the position of the second connecting steel rope 33 by rotating, so as to achieve the purpose of auxiliary bearing.

[0042] The support plate 19 is fixedly connected to the first gear plate 14 through the docking frame 18. When the first gear plate 14 rotates, it drives the docking frame 18, the support plate 19, and the side support plate 22 to rotate as a whole, changing the position of the lower hook 26 and the supporting side block 31.

[0043] The winch 34 changes the height of the supporting side block 31 through the second connecting steel rope 33 and the connecting and reinforcing end frame 32, and the supporting side block 31 provides auxiliary support for the turbine stator. The hook 26 is connected to the turbine stator through the rope. The connection combination facilitates the support control work.

[0044] The working principle is as follows: During use, the user can lift different turbine stators using the first maintenance lifting structure 1 and the second maintenance lifting structure 2. First, the lifting control component 4 is adjusted to a suitable position by controlling the pushing component 3. At this time, the hydraulic control seat 8 controls the extension and retraction of the push rod 7, changing the position of the lifting control component 4 on the limit frame 5 and the support platform 6. Then, the turbine stator is lifted using the hook 26 and the rope. At the same time, the rope can be wound around the supporting side block 31 to provide auxiliary support for the turbine stator. At this time, the winding machine 29 and the winch 34 can work. The winding machine 29 can control the winding of the first connecting steel rope 25, so that the first connecting steel rope 25 drags the second pulley 27, changing the height position of the hook 26. At the same time, the winch 34 pulls the position of the supporting side block 31 through the second connecting steel rope 33 and the connecting reinforcement end frame 32. The turbine stator is adjusted to lift it and place it in a designated maintenance position. The length of the first connecting steel rope 25 is then controlled by the winding machine 29. The first connecting steel rope 25 is upper-limited by the first pulley 24 and the third pulley 30, providing support. The actual lifting work is carried out via the hook 26 and the second pulley 27. The spring damping rod 20 and the fixed support block 21 facilitate the connection control guide rod 28 and the buffer protection of the third pulley 30. When steering control is required, the stepper motor 16 operates, controlling the rotation of the second gear 15. The second gear 15 meshes with the first gear 14, driving the first gear 14 to rotate at the lower end of the chassis 13. This causes the first gear 14 to drive the entire lifting connection mechanism 10 to rotate, achieving the reversing adjustment of the turbine stator and completing the work.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting tool for overhauling the stator of a power plant steam turbine, characterized in that: It includes a first maintenance hoisting structure (1) and a second maintenance hoisting structure (2). The second maintenance hoisting structure (2) is fixedly connected to the side end of the first maintenance hoisting structure (1), and the first maintenance hoisting structure (1) and the second maintenance hoisting structure (2) have the same structure. The first maintenance hoisting structure (1) includes a control pushing component (3) and a lifting control component (4). The lower end of the control pushing component (3) is slidably connected to the lifting control component (4). The control pushing component (3) includes a limit frame (5), a support base (6), a push rod (7), and a hydraulic control seat (8). The hydraulic control seat (8) is telescopically connected to the center side end with a push rod (7). A support base (6) is fixedly connected to the side edge of the hydraulic control seat (8). A limit frame (5) is fixedly connected to the support base (6). The hoisting control component (4) includes a support rotation mechanism (9) and a hoisting connection mechanism (10). The lower end of the support rotation mechanism (9) is limitedly connected to the hoisting connection mechanism (10). The support rotation mechanism (9) includes a top plate (11), an adapter slot frame (12), a base plate (13), a first gear plate (14), a second gear plate (15), and a stepper. The structure includes a motor (16) and a support frame (17). A matching slot frame (12) is fixedly connected to the lower center of the top plate (11). A support frame (17) is fixedly connected to the lower side of the top plate (11). A base plate (13) is fixedly connected to the lower ends of the matching slot frame (12) and the support frame (17). A first gear plate (14) is rotatably connected to the lower center of the base plate (13). A second gear plate (15) is meshed with the side of the first gear plate (14). A stepper motor (16) is mounted on the upper end of the second gear plate (15). The hoisting connection mechanism (10) is also included. The assembly includes a docking frame (18), a support plate (19), a spring damping rod (20), a fixed support block (21), a side support plate (22), a connecting guide (23), a first pulley (24), a first connecting steel rope (25), a hook (26), and a second pulley (27). The lower end of the docking frame (18) is fixedly connected to the support plate (19), the side end of the support plate (19) is fixedly connected to the side support plate (22), the lower end of the side support plate (22) is fixedly connected to the connecting guide (23), and the lower end of the connecting guide (23) is equipped with the first pulley (24).

2. The power plant turbine stator maintenance lifting tool according to claim 1, characterized in that: The stepper motor (16) is fixedly supported by the chassis (13), and the stepper motor (16) drives the first gear (14) to rotate through the second gear (15). The adapter slot (12) is slidably connected on the limit frame (5) and the support base (6).

3. The power plant turbine stator maintenance lifting tool according to claim 2, characterized in that: A first connecting steel rope (25) is wound around the first pulley (24), and the center of the first connecting steel rope (25) is bent and wound around the second pulley (27). A hook (26) is fixedly connected to the lower end of the second pulley (27).

4. The power plant turbine stator maintenance lifting tool according to claim 3, characterized in that: The lower end of the support plate (19) is provided with a spring damping rod (20), the lower end of the spring damping rod (20) is limited and connected to a fixed support block (21), the lower end of the fixed support block (21) is fixedly connected to a connecting control guide rod (28), and the lower end of the winding machine (29) is rotatably connected to a third pulley (30).

5. The power plant turbine stator maintenance lifting tool according to claim 4, characterized in that: A winding machine (29) is installed at the lower center of the support fixing plate (19). The winding machine (29) is used for winding control of the first connecting steel rope (25). The first connecting steel rope (25) is also connected to the third pulley (30).

6. The power plant turbine stator maintenance lifting tool according to claim 5, characterized in that: A winch (34) is fixedly connected to the side end of the side support plate (22). A second connecting steel rope (33) is wound around the winch (34). A connecting reinforcement end frame (32) is fixedly connected to the lower end of the second connecting steel rope (33). A supporting side block (31) is fixedly connected to the lower end of the connecting reinforcement end frame (32).

7. A power plant turbine stator maintenance lifting tool according to claim 6, characterized in that: The support fixing plate (19) is fixedly connected to the first gear plate (14) through the docking frame (18). When the first gear plate (14) rotates, it drives the docking frame (18), the support fixing plate (19), and the side support plate (22) to rotate as a whole, changing the position of the lower hook (26) and the supporting side block (31).

8. The power plant turbine stator maintenance lifting tool according to claim 7, characterized in that: The winch (34) changes the height of the supporting side block (31) through the second connecting steel rope (33) and the connecting reinforcement end frame (32), and the supporting side block (31) provides auxiliary support for the turbine stator. The hook (26) is connected to the turbine stator through the rope.

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