Power plant steam turbine stator maintenance lifting appliance

Abstract

The invention relates to the technical field of steam turbine stator overhaul lifting appliances, 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 fixedly connected to the side end of the first overhaul lifting structure. The first overhauling hoisting structure and the second overhauling hoisting structure are the same in structure; the first overhauling hoisting structure comprises a control pushing part and a hoisting control part, the lower end of the control pushing part is slidably connected with the hoisting control part, the control pushing part comprises a limiting frame, a supporting pedestal, a pushing rod and a hydraulic regulation and control seat, and the pushing rod is telescopically connected to the side end of the center of the hydraulic regulation and control seat; a supporting pedestal is fixedly connected to the edge position of the side end of the hydraulic regulation and control seat, a limiting frame is fixedly connected to the supporting pedestal, and the hoisting control component comprises a supporting rotating mechanism and a hoisting connecting mechanism. And through the arrangement of the first overhaul hoisting structure and the second overhaul hoisting structure, overhaul hoisting work of the steam turbine stator is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine stator maintenance hangers, in particular to a steam turbine stator maintenance hanger for a power plant. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants. They are also used in the metallurgical industry, the chemical industry, and ship power plants. They are the main equipment in modern thermal power plants. The steam turbine stator is an important component of the steam turbine. When the steam turbine stator needs to be overhauled, a hoist is required.

[0003] According to Chinese patent publication number CN115744602A, a steam turbine stator maintenance hoist for a power plant is disclosed, comprising a suspension beam, a support column is fixedly installed on the lower surface of the bottom of the suspension beam, a driving motor is fixedly connected to one side of the top of the suspension beam, a mounting plate is fixedly connected to the other side of the top of the suspension beam, and a rotating rod is connected through the inside of the mounting plate; the right end of the rotating rod is fixedly connected to the output end of the driving motor, a lifting rope is wound around the outer side of the rotating rod, and a base is fixedly connected to the bottom of the support column; a supporting leg is fixedly installed on the bottom of the base, and a hook is fixedly connected to one end of the lifting rope. The steam turbine stator maintenance hoist for a power plant can avoid clamping marks on the steam turbine stator due to excessive clamping force, and at the same time avoid shaking of the steam turbine stator during lifting, and can effectively improve the stability of the device during lifting.

[0004] At present, the existing steam turbine stator maintenance hanger for power plants is not convenient for labor-saving design when in use, which affects the long-term service life. At the same time, it is not convenient to adjust the rotation position. Therefore, improvements are made to address the above problems. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a stator maintenance hanger for a steam turbine in a power plant.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a steam turbine stator maintenance hoist for a power plant, comprising a first maintenance hoisting structure and a second maintenance hoisting structure, wherein the side end of the first maintenance hoisting structure is fixedly connected to the second 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 comprises a control pushing component and a lifting control component, the lower end of the control pushing component is slidably connected with the lifting control component, the control pushing component comprises a limit frame, a support pedestal, a propulsion rod and a hydraulic adjustment seat, the central side end of the hydraulic adjustment seat is telescopically connected with the propulsion rod, the side edge position of the hydraulic adjustment seat is fixedly connected with the support pedestal, the support pedestal is fixedly connected with the limit frame, the lifting control component comprises a support rotation mechanism and a lifting connection mechanism, the lower end limit of the support rotation mechanism is connected with the lifting connection mechanism, through the structural setting of the control pushing component, the propulsion rod in the control pushing component is fixedly connected with the adapter slot frame, the propulsion rod is controlled to be telescopically adjusted through the hydraulic adjustment seat, the position of the lifting control component on the control pushing component is changed, and the adapter slot frame is limit-connected with the limit frame and the support pedestal, under the push of the propulsion rod, the lifting control component can be controlled to adjust its position, thereby facilitating the transmission control work of the turbine stator.

[0008] Specifically, the supporting and rotating mechanism includes a top plate, an adapting slot frame, a bottom plate, a first gear plate, a second gear plate, a stepping motor and a supporting reinforcement frame. The central lower end of the top plate is fixedly connected to the adapting slot frame, the lower part of the side end of the top plate is fixedly connected to the supporting reinforcement frame, the lower ends of the adapting slot frame and the supporting reinforcement frame are fixedly connected to the bottom plate, the central lower end of the bottom plate is rotatably connected to the first gear plate, the side end of the first gear plate is meshingly connected to the second gear plate, and the upper end of the second gear plate presses the stepping motor.

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

[0010] The lifting connection mechanism comprises a docking frame, a supporting fixed disk, a spring shock absorber rod, 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 supporting fixed disk, the side end of the supporting fixed disk 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 installed with the first pulley through the supporting rotation mechanism. The stepping motor in the supporting rotation mechanism can control the first gear disc to rotate through the second gear disc, and the lower end of the first gear disc is connected to the supporting fixed disk through the docking frame. When the first gear disc is driven, the lifting connection mechanism can rotate as a whole, which is convenient The position of the steam turbine stator is replaced, and a first pulley is set at the lower end of the connecting guide frame, and a third pulley is set at the lower end of the connecting control guide rod. The first pulley and the third pulley are connected with a second pulley through a first connecting steel rope. The second pulley can be used for pulling and dragging, thereby changing the position of the hook, so that the height of the steam turbine stator can be adjusted. The setting of the second pulley utilizes the principle of a movable pulley to reduce the force, thereby avoiding overload operation of the winder. At the same time, the winch changes the position of the supporting side block through the second connecting steel rope and the connecting reinforcement end frame. The supporting side block can be connected and supported with the steam turbine stator through the rope body, thereby achieving the purpose of auxiliary support, thereby enhancing the maintenance stability performance of the steam turbine stator.

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

[0012] Specifically, a spring damping rod is provided at the lower end of the supporting fixed disk, the lower end of the spring damping rod is limitedly 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 winder is rotatably connected to a third pulley.

[0013] Specifically, a winder is installed at the central lower end of the supporting fixed disk, and the winder is used for controlling the winding of the first connecting steel rope. The first connecting steel rope is also wound around the third pulley.

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

[0015] Specifically, the supporting fixed disk is fixedly connected to the first toothed disk via a docking frame. When the first toothed disk rotates, the docking frame, the supporting fixed disk, and the side support plate are driven to rotate as a whole, thereby changing the positions of the lower end hook and the supporting side block.

[0016] Specifically, the hoist 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 steam turbine stator, and the hook is connected to the steam turbine stator through the rope body.

[0017] Beneficial effects of the present invention:

[0018] First, the present invention controls the structural setting of the push component, controls the push rod in the push component to be fixedly connected with the adapter slot frame, controls the telescopic adjustment of the push rod through the hydraulic control seat, changes the position of the lifting control component on the control push component, and the adapter slot frame is limitedly connected with the limit frame and the support base. Under the push of the push rod, the lifting control component can be controlled to adjust its position, thereby facilitating the transmission control work of the turbine stator.

[0019] Second, the present invention supports the rotating mechanism, and the stepping motor in the rotating mechanism can control the first gear disc to rotate through the second gear disc. The lower end of the first gear disc is connected to the supporting fixed disc through a docking frame. When the first gear disc is driven, the lifting connection mechanism can rotate as a whole, which is convenient for replacing the position of the turbine stator. A first pulley is set at the lower end of the connecting guide frame, and a third pulley is set at the lower end of the connecting control guide rod. The first pulley and the third pulley are connected by a first connecting steel rope. The second pulley can be used for pulling and dragging, thereby changing the position of the hook, so that the height of the turbine stator can be adjusted. The setting of the second pulley utilizes the principle of a movable pulley to reduce the force, thereby avoiding overload operation of the winder. At the same time, the winch changes the position of the supporting side block through the second connecting steel rope and the connecting reinforcement end frame. The supporting side block can be connected and supported with the turbine stator through the rope body, thereby achieving the purpose of auxiliary support, thereby enhancing the maintenance stability performance of the turbine stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from a side perspective;

[0023] Figure 3 It is a three-dimensional diagram of the first maintenance hoisting structure in the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the control push component in the present invention from the front perspective;

[0025] Figure 5 A three-dimensional diagram of a lifting control component in the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the supporting rotating mechanism in the present invention from a front perspective;

[0027] Figure 7 It is a three-dimensional diagram of the hoisting connection mechanism in the present invention;

[0028] Figure 8 It is a three-dimensional side view of the lifting connection mechanism in the present invention.

[0029] In the figure: 1-first maintenance hoisting structure, 2-second maintenance hoisting structure, 3-control push component, 4-lifting control component, 5-limiting frame, 6-support pedestal, 7-propelling rod, 8-hydraulic control seat, 9-support rotation mechanism, 10-hoisting connection mechanism, 11-top plate, 12-adapting slot frame, 13-chassis, 14-first gear plate, 15-second gear plate, 16-stepping motor, 17-support reinforcement frame, 18-docking frame, 19-support fixed plate, 20-spring shock absorber rod, 21-fixed support 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-winding machine, 30-third pulley, 31-supporting side block, 32-connecting reinforcement end frame, 33-second connecting steel rope, 34-winch. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] Example

[0033] like Figure 1-8As shown, a steam turbine stator maintenance hoist for a power plant of the present invention comprises a first maintenance hoisting structure 1 and a second maintenance hoisting structure 2, the side end of the first maintenance hoisting structure 1 is fixedly connected with the second maintenance hoisting structure 2, and the structures of the first maintenance hoisting structure 1 and the second maintenance hoisting structure 2 are the same, and the structural setting of the control push component 3 is controlled to control the push rod 7 in the push component 3 to be fixedly connected with the adapting slot frame 12, and the push rod 7 is controlled to be telescopically adjusted by the hydraulic control seat 8 to change the position of the lifting control component 4 on the control push component 3, and the adapting slot frame 12 is limitedly connected with the limiting frame 5 and the supporting pedestal 6, and under the push of the push rod 7, the lifting control component 4 can be controlled to adjust the position, thereby facilitating the transmission control work of the steam turbine stator;

[0034] The first maintenance hoisting structure 1 includes a control and sliding component 3 and a lifting control component 4. The lower end of the control and sliding component 3 is slidably connected to the lifting control component 4. The control and sliding component 3 includes a limit frame 5, a support pedestal 6, a propulsion rod 7 and a hydraulic control seat 8. The central side end of the hydraulic control seat 8 is telescopically connected to the propulsion rod 7. The side edge position of the hydraulic control seat 8 is fixedly connected to the support pedestal 6. The support pedestal 6 is fixedly connected with the limit frame 5. The lifting control component 4 includes a support rotation mechanism 9 and a lifting connection mechanism 10. The lower end of the support rotation mechanism 9 is limitedly connected to the lifting connection mechanism 10. The first maintenance hoisting structure 1 and the second maintenance hoisting structure 2 can be used to lift different steam turbine stators. The lifting control component 4 is first adjusted to a suitable position by the control and sliding component 3. At this time, the hydraulic control seat 8 controls the propulsion rod 7 to telescopically adjust, and the position of the lifting control component 4 on the limit frame 5 and the support pedestal 6 is changed. Then, the steam turbine stator is lifted by the hook 26 and the rope body.

[0035] The support rotation mechanism 9 includes a top plate 11, an adapter slot frame 12, a bottom plate 13, a first toothed disc 14, a second toothed disc 15, a stepping motor 16 and a support reinforcement frame 17. The center lower end of the top plate 11 is fixedly connected to the adapter slot frame 12, the side lower end of the top plate 11 is fixedly connected to the support reinforcement frame 17, the lower ends of the adapter slot frame 12 and the support reinforcement frame 17 are fixedly connected to the bottom plate 13, the center lower end of the bottom plate 13 is rotatably connected to the first toothed disc 14, and the side of the first toothed disc 14 is fixedly connected to the bottom of the bottom plate 13. The second end of the chassis 13 is meshed with a second gear disc 15, and the upper end of the second gear disc 15 presses a stepper motor 16. When steering control is required, the stepper motor 16 can work at this time. The stepper motor 16 controls the second gear disc 15 to rotate, and the second gear disc 15 is meshed with the first gear disc 14, driving the first gear disc 14 to rotate at the lower end of the chassis 13, so that the first gear disc 14 drives 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 plate 14 to rotate and connect through the second gear plate 15 , and the adapter slot frame 12 is slidably connected on the limit frame 5 and the support base 6 .

[0037] The lifting connection mechanism 10 includes a docking frame 18, a support fixing plate 19, a spring damping rod 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 installed with the first pulley 24. The steam turbine stator is lifted by the hook 26 and the rope body, and the rope body can be wound around the supporting side block 31, so as to perform auxiliary support work on the steam turbine stator. At this time, the winder 29 and the hoist 34 can work, and the winder 29 can control The winding of the first connecting steel rope 25 causes the first connecting steel rope 25 to drag the second pulley 27, thereby 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 to adjust the stator of the steam turbine, thereby lifting the stator of the steam turbine and placing the stator of the steam turbine at the designated maintenance position. After that, the length of the first connecting steel rope 25 is 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 to play a supporting role. The specific lifting work is performed by the hook 26 and the second pulley 27. The setting of the spring shock absorber rod 20 and the fixed support block 21 facilitates the buffering protection of the connection 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 wound around the second pulley 27 , and a hook 26 is fixedly connected to the lower end of the second pulley 27 .

[0039] A spring damping rod 20 is provided at the lower end of the support fixed disk 19, and the lower end of the spring damping rod 20 is limitedly connected to a fixed support block 21, and 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 winder 29 is rotatably connected to a third pulley 30.

[0040] A winder 29 is installed at the central lower end of the support fixed disk 19. The winder 29 is used for winding control of the first connecting steel rope 25. The first connecting steel rope 25 is also connected with 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 fixed disk 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 is convenient for replacing the position of the turbine stator. The first pulley 24 is set at the lower end of the connecting guide frame 23, and the third pulley is set at the lower end of the connecting control guide rod 28. The first pulley 24 and the third pulley 30 are connected to the second pulley 27 through the first connecting steel rope 25. The second pulley 27 can be used for pulling and dragging, thereby changing the position of the hook 26, so that the height of the steam turbine stator can be adjusted. The setting of the second pulley 27 utilizes the principle of a movable pulley to reduce the force, thereby avoiding overload operation of the winder 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 with the steam turbine stator through the rope body to achieve the purpose of auxiliary support, thereby enhancing the maintenance stability performance of the steam turbine stator.

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

[0042] The supporting fixed disk 19 is fixedly connected to the first toothed disk 14 through the docking frame 18. When the first toothed disk 14 rotates, the docking frame 18, the supporting fixed disk 19 and the side support plate 22 are driven to rotate as a whole, thereby changing the positions of the lower end 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 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 body. Through the connection combination, support control work is convenient.

[0044] The working principle is as follows: when in use, the user can lift different steam turbine stators through the first maintenance lifting structure 1 and the second maintenance lifting structure 2. First, adjust the lifting control component 4 to a suitable position by controlling the push component 3. At this time, the hydraulic control seat 8 controls the telescopic adjustment of the propulsion rod 7 to change the position of the lifting control component 4 on the limit frame 5 and the support pedestal 6. Then, the steam turbine stator is lifted through the hook 26 and the rope body. At the same time, the rope body can be wound around the supporting side block 31 to perform auxiliary support work on the steam turbine stator. At this time, the winder 29 and the winch 34 can work. The winder 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 to change 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 adjustment of the steam turbine stator can lift the steam turbine stator and place the steam turbine stator in the designated maintenance position. Then, the length of the first connecting steel rope 25 is controlled by the winder 29. The first connecting steel rope 25 is limited at the upper part by the first pulley 24 and the third pulley 30 to play a supporting role. The specific lifting work is carried out by the hook 26 and the second pulley 27. The setting of the spring shock absorber rod 20 and the fixed support block 21 facilitates the buffering protection of the connection control guide rod 28 and the third pulley 30. When steering control is required, the stepper motor 16 can work at this time. The stepper motor 16 controls the rotation of the second gear disc 15, and the second gear disc 15 is engaged with the first gear disc 14, driving the first gear disc 14 to rotate at the lower end of the chassis 13, so that the first gear disc 14 drives the lifting connection mechanism 10 to rotate as a whole, realizing the reversing adjustment of the steam turbine stator and completing the work.

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

Claims

1. A steam turbine stator maintenance hanger for a power plant, characterized in that: It comprises a first maintenance hoisting structure (1) and a second maintenance hoisting structure (2), wherein the side end of the first maintenance hoisting structure (1) is fixedly connected to the second maintenance hoisting structure (2), and the first maintenance hoisting structure (1) and the second maintenance hoisting structure (2) have the same structure; The first maintenance hoisting structure (1) comprises a control push component (3) and a hoisting control component (4); the lower end of the control push component (3) is slidably connected to the hoisting control component (4); the control push component (3) comprises a limit frame (5), a support pedestal (6), a propulsion rod (7) and a hydraulic control seat (8); the central side end of the hydraulic control seat (8) is telescopically connected to the propulsion rod (7); the side edge position of the hydraulic control seat (8) is fixedly connected to the support pedestal (6); the support pedestal (6) is fixedly connected to the limit frame (5); the hoisting control component (4) comprises a support rotation mechanism (9) and a hoisting connection mechanism (10); the lower end of the support rotation mechanism (9) is limit-connected to the hoisting connection mechanism (10).

2. The stator maintenance hanger for a steam turbine in a power plant according to claim 1, characterized in that: The support rotation mechanism (9) comprises a top plate (11), an adapting slot frame (12), a bottom plate (13), a first toothed plate (14), a second toothed plate (15), a stepping motor (16) and a supporting reinforcement frame (17); the central lower end of the top plate (11) is fixedly connected to the adapting slot frame (12); the lower part of the side end of the top plate (11) is fixedly connected to the supporting reinforcement frame (17); the lower ends of the adapting slot frame (12) and the supporting reinforcement frame (17) are fixedly connected to the bottom plate (13); the central lower end of the bottom plate (13) is rotatably connected to the first toothed plate (14); the side end of the first toothed plate (14) is meshingly connected to the second toothed plate (15); the upper end of the second toothed plate (15) presses the stepping motor (16).

3. The stator maintenance hanger for a steam turbine in a power plant according to claim 2, characterized in that: The stepper motor (16) is fixedly supported by the chassis (13), and the stepper motor (16) drives the first toothed disc (14) to rotate through the second toothed disc (15), and the adapter slot frame (12) is slidably connected on the limit frame (5) and the support pedestal (6).

4. The steam turbine stator maintenance hanger for a power plant according to claim 3, characterized in that: The lifting connection mechanism (10) comprises a docking frame (18), a supporting fixed plate (19), a spring damping rod (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 supporting fixed plate (19); the side end of the supporting fixed 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 installed with the first pulley (24).

5. The power plant steam turbine stator maintenance hanger according to claim 4, 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 wound around the second pulley (27), and the lower end of the second pulley (27) is fixedly connected with a hook (26).

6. A power plant steam turbine stator maintenance hanger according to claim 5, characterized in that: A spring damping rod (20) is provided at the lower end of the supporting fixed disk (19), the lower end of the spring damping rod (20) is limitedly 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).

7. The power plant steam turbine stator maintenance hanger according to claim 6, characterized in that: A reel (29) is installed at the central lower end of the supporting fixed disk (19), and the reel (29) is used for controlling the reeling of the first connecting steel rope (25). The first connecting steel rope (25) is also wound around the third pulley (30).

8. The power plant steam turbine stator maintenance hanger according to claim 7, characterized in that: The side end of the side support plate (22) is fixedly connected to a winch (34), a second connecting steel rope (33) is wound around the winch (34), the lower end of the second connecting steel rope (33) is fixedly connected to a connecting reinforcement end frame (32), and the lower end of the connecting reinforcement end frame (32) is fixedly connected to a supporting side block (31).

9. The power plant steam turbine stator maintenance hanger according to claim 8, characterized in that: The supporting fixed disk (19) is fixedly connected to the first toothed disk (14) via the connecting frame (18); when the first toothed disk (14) rotates, the connecting frame (18), the supporting fixed disk (19) and the side support plate (22) are driven to rotate as a whole, thereby changing the positions of the lower end hook (26) and the supporting side block (31).

10. A steam turbine stator maintenance hanger for a power plant according to claim 9, characterized in that: The hoist (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) performs auxiliary support for the steam turbine stator. The hook (26) is connected to the steam turbine stator through a rope body.

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