Maintenance support mechanism for steam turbine of power plant

Abstract

The invention relates to the technical field of steam turbine maintenance supports, in particular to a power plant steam turbine maintenance support mechanism which comprises a control adjusting structure and a supporting and stabilizing structure, and the supporting and stabilizing structure is slidably connected to the control adjusting structure; the control adjusting structure comprises a first hydraulic control air cylinder, a limiting guide rod, a fixing support, a pushing guide rod and a matched adjusting component, the first hydraulic control air cylinder is fixedly installed at the side end of the fixing support, the pushing guide rod is connected to the side end of the first hydraulic control air cylinder in a telescopic mode, and the limiting guide rod is fixedly connected to the center of the fixing support. The right side of the fixing support is fixedly connected with a matched adjusting component. The supporting and stabilizing structure comprises a supporting displacement component and a regulation and control supporting component, and the regulation and control supporting component is fixedly connected to the supporting displacement component. And through the arrangement of the control adjusting structure and the supporting and stabilizing structure, steam turbine maintenance work is facilitated.

Description

Technical Field

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

[0002] Whether the steam turbine of a thermal power plant operates safely and smoothly directly affects the stability of the power supply of the entire power plant. Effective maintenance of the steam turbine can not only extend the service life of the equipment, ensure the integrity of the steam turbine, improve the stability of operation, improve the efficiency of power generation, and reduce the cost of the power plant, but also ensure the stability of people's lives, ensure the effective development of national construction, and promote the stable development of the country. It can be seen that it is very important to actively carry out maintenance work. In addition, steam turbine maintenance plays a very important role in market development, environmental protection, and economy. It can not only timely eliminate the faults caused by the steam turbine, pre-solve the hidden dangers caused by the steam turbine, but also stabilize the supply of electricity.

[0003] At present, the existing steam turbine maintenance support mechanism of a power plant is not convenient for multi-angle control and adjustment when in use. The traditional steam turbine maintenance support mechanism of a power plant adopts a fixed design, which is inconvenient during hoisting and handling. Therefore, improvements are made to address the above problems. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a maintenance bracket mechanism for a steam turbine in a power plant.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a steam turbine maintenance support mechanism for a power plant, comprising a control and adjustment structure and a support and stabilization structure, wherein the control and adjustment structure is slidably connected with the support and stabilization structure;

[0006] The control and adjustment structure comprises a first hydraulic control cylinder, a limit guide rod, a fixed bracket, a propulsion guide rod and a matching adjustment component, the first hydraulic control cylinder is fixedly installed on the side end of the fixed bracket, the side end of the first hydraulic control cylinder is telescopically connected to the propulsion guide rod, the center of the fixed bracket is fixedly connected to the limit guide rod, and the right side of the fixed bracket is fixedly connected to the matching adjustment component;

[0007] The supporting and stabilizing structure comprises a supporting displacement component and a regulating supporting component, and the supporting displacement component is fixedly connected with the regulating supporting component.

[0008] Specifically, the mating and adjusting components include a first contact roller, a first supporting frame, a butt hinge frame, an adaptor ring frame, an electrically-controlled hydraulic guide rod, a first butt hinge seat, a combined support, a second butt hinge seat and a fixed base frame, the combined support seat is fixedly connected to the first butt hinge seat, the first butt hinge seat is hingedly provided with an electrically-controlled hydraulic guide rod, the upper end of the electrically-controlled hydraulic guide rod is fixedly connected to the adaptor ring frame, the upper end of the adaptor ring frame is hingedly arranged to the butt hinge frame, the rear end of the butt hinge frame is fixedly connected to the first supporting frame, and the upper end of the first supporting frame is rotatably connected to the first contact roller.

[0009] Specifically, the lower end of the first support frame is hinged to the second butt hinge seat, the lower end of the second butt hinge seat is fixedly connected to the fixed base frame, and the electrically controlled hydraulic guide rod controls the first contact roller and the first support frame to rotate around the second butt hinge seat by telescoping.

[0010] Specifically, the support displacement component includes a motor seat, a screw rod, a frame block, a second support stand, a second contact roller and a movable displacement support. The side end of the movable displacement support is fixedly connected to the frame block, and the frame block is rotatably connected to the screw rod. The motor seat drives the screw rod to be rotatably connected to the frame block, and the upper end of the screw rod is threadedly connected to the second support stand, and the upper end of the second support stand is rotatably connected to the second contact roller.

[0011] Specifically, the regulating support component includes a third contact roller, a third support frame and a support limit frame. The upper end of the third support frame is rotatably connected to the third contact roller. The third support frame is movably connected to the support limit frame. The third support frame can slide on the support limit frame, and the third support frame can be rotated and adjusted on the support limit frame.

[0012] Specifically, the regulating support component also includes a fixed top block, a second hydraulic control cylinder, a matching hinged bottom block, a connecting disk, a first gear disk, a protective base, a reduction motor, a second gear disk, a bonding disk and a limit pad bottom block, the protective base is equipped with a reduction motor, the upper end of the reduction motor is drivingly connected to the second gear disk, the upper end of the second gear disk is fixedly connected to the bonding disk, the side end of the second gear disk is meshingly connected to the first gear disk, the upper end of the first gear disk is fixedly connected to the connecting disk, the side end of the connecting disk is fixedly connected to the matching hinged bottom block, the upper end of the matching hinged bottom block is hingedly provided with a second hydraulic control cylinder, the upper end of the second hydraulic control cylinder is hingedly provided with a fixed top block, the upper end of the fixed top block is fixedly connected to the third support platform, the third support platform is connected to the center of the support and limit platform, The limiting pad bottom block is fixed at the bottom of the supporting limiting gantry, and can perform lateral supporting work through the structural setting of the supporting displacement component. The motor seat can drive the screw rod to rotate, thereby changing the position of the second supporting gantry on the frame block. The upper end of the second supporting gantry can support the turbine accessories through the second contact roller. The reduction motor in the regulating support component can drive the second gear plate and the fitting plate to rotate, so that the first gear plate follows the rotation. The position of the articulated bottom block, the second hydraulic control cylinder, and the fixed top block is changed by the connecting plate, so that the third contact roller and the third supporting gantry can rotate on the supporting limiting gantry. At the same time, the telescopic control of the second hydraulic control cylinder can adjust the height of the third contact roller and the third supporting gantry, perform top height control, and realize the supporting processing of the turbine accessories.

[0013] Specifically, the limiting pad bottom protection block is fixed to the supporting limiting stand, and the lower end of the limiting pad bottom protection block is fixed to the protection base, and the connecting plate and the connecting plate are rotatably connected at the lower end of the limiting pad bottom protection block.

[0014] Specifically, the motor seat drives the second support frame to be slidably connected on the frame block through a screw rod, and the upper end of the second support frame supports the steam turbine through a second contact roller.

[0015] Specifically, the side end of the fixed base frame is fixedly connected to the fixed bracket, the side end of the propulsion guide rod is fixedly connected to the movable displacement support, and the movable displacement support is slidably connected on the limiting guide rod and the fixed bracket.

[0016] Specifically, when the first gear plate rotates, it drives the connecting plate and the articulated bottom block to rotate synchronously, and the upper end of the articulated bottom block changes the height of the fixed top block through the second hydraulic control cylinder, so that the third support frame can move and adjust on the support limit frame.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention can change the position of the propulsion guide rod by setting the first hydraulic control cylinder, so that the propulsion guide rod drives the movable displacement support to slide and adjust on the limiting guide rod and the fixed bracket, thereby changing the overall position of the supporting and stabilizing structure, and at the same time cooperating with the structural setting of the adjusting component to facilitate side support. When the supporting and stabilizing structure needs to be flipped, the cooperating adjusting component at this time can play the purpose of side support, and the electrically controlled hydraulic guide rod in the cooperating adjusting component can make the first contact roller and the first support frame rotate around the second butt hinge seat through extension and retraction, thereby adjusting the position of the first contact roller and the first support frame, and supporting the accessories of the turbine through the first contact roller and the first support frame.

[0019] Second, the present invention can perform lateral support work through the structural setting of the support displacement component, the motor seat can drive the screw to rotate, thereby changing the position of the second support platform on the frame block, and the upper end of the second support platform can support the turbine accessories through the second contact roller. The reduction motor in the regulating support component can drive the second gear plate and the fitting plate to rotate, so that the first gear plate follows the rotation, and the position of the articulated bottom block, the second hydraulic control cylinder, and the fixed top block is changed by the connecting plate, so that the third contact roller and the third support platform can rotate on the support limit platform. At the same time, the telescopic control of the second hydraulic control cylinder can adjust the height of the third contact roller and the third support platform, perform top height control, and realize the support processing of the turbine accessories. 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 control and adjustment structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the front viewing angle stereoscopic structure of the matching adjustment component in the present invention;

[0025] Figure 5 It is a three-dimensional diagram of the supporting and stabilizing structure in the present invention;

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

[0027] Figure 7 A three-dimensional diagram of the regulating support component in the present invention;

[0028] Figure 8 This is a disassembled diagram of the regulating support component in the present invention.

[0029] In the figure: 1-control adjustment structure, 2-support stabilization structure, 3-first hydraulic control cylinder, 4-limit guide rod, 5-fixed bracket, 6-advancing guide rod, 7-matching adjustment component, 8-first contact roller, 9-first support stand, 10-butt hinge frame, 11-adapting ring frame, 12-electrically controlled hydraulic guide rod, 13-first butt hinge seat, 14-combined support, 15-second butt hinge seat, 16-fixed base frame, 17-support displacement component, 18-regulating support component, 1 9-motor seat, 20-screw rod, 21-frame block, 22-second supporting stand, 23-second contact roller, 24-movable displacement support, 25-third contact roller, 26-third supporting stand, 27-supporting limit stand, 28-fixed top block, 29-second hydraulic control cylinder, 30-cooperating articulated bottom block, 31-connecting disk, 32-first gear disk, 33-protective base, 34-reduction motor, 35-second gear disk, 36-fitting disk, 37-limiting pad bottom block. 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 1-8 As shown, a steam turbine maintenance support mechanism for a power plant of the present invention comprises a control and adjustment structure 1 and a support and stabilization structure 2, wherein the control and adjustment structure 1 is slidably connected with the support and stabilization structure 2;

[0034] The control and adjustment structure 1 comprises a first hydraulic control cylinder 3, a limit guide rod 4, a fixed bracket 5, a propulsion guide rod 6 and a matching adjustment component 7. The first hydraulic control cylinder 3 is fixedly installed on the side end of the fixed bracket 5. The side end of the first hydraulic control cylinder 3 is telescopically connected to the propulsion guide rod 6. The center of the fixed bracket 5 is fixedly connected to the limit guide rod 4. The right side of the fixed bracket 5 is fixedly connected to the matching adjustment component 7.

[0035] The supporting and stabilizing structure 2 includes a supporting displacement component 17 and a regulating supporting component 18 , and the supporting displacement component 17 is fixedly connected with the regulating supporting component 18 .

[0036] The matching adjustment component 7 includes a first contact roller 8, a first supporting platform 9, a butt hinge frame 10, an adaptor ring frame 11, an electrically controlled hydraulic guide rod 12, a first butt hinge seat 13, a combined support 14, a second butt hinge seat 15 and a fixed base frame 16. The combined support 14 is fixedly connected to the first butt hinge seat 13, the first butt hinge seat 13 is hingedly provided with an electrically controlled hydraulic guide rod 12, the upper end of the electrically controlled hydraulic guide rod 12 is fixedly connected to the adaptor ring frame 11, the upper end of the adaptor ring frame 11 is hingedly arranged with the butt hinge frame 10, the rear end of the butt hinge frame 10 is fixedly connected to the first supporting platform 9, the upper end of the first supporting platform 9 is rotatably connected to the first contact roller 8, and through the setting of the first hydraulic control cylinder 3, it can The position of the propulsion guide rod 6 is changed so that the propulsion guide rod 6 drives the movable displacement support 24 to slide and adjust on the limiting guide rod 4 and the fixed bracket 5, thereby changing the overall position of the supporting and stabilizing structure 2. At the same time, the structural setting of the adjusting component 7 is cooperated to facilitate side support. When the supporting and stabilizing structure 2 needs to be flipped, the cooperating adjusting component 7 at this time can play the purpose of side support. The electrically controlled hydraulic guide rod 12 in the cooperating adjusting component 7 can be extended and retracted to enable the first contact roller 8 and the first supporting pedestal 9 to rotate around the second butt hinge seat 15, thereby adjusting the position of the first contact roller 8 and the first supporting pedestal 9, and supporting the accessories of the steam turbine through the first contact roller 8 and the first supporting pedestal 9.

[0037] The lower end of the first support frame 9 is hinged to the second butt hinge seat 15, and the lower end of the second butt hinge seat 15 is fixedly connected to the fixed base frame 16. The electrically controlled hydraulic guide rod 12 controls the first contact roller 8 and the first support frame 9 to rotate around the second butt hinge seat 15 by telescoping.

[0038] The support displacement component 17 includes a motor seat 19, a screw rod 20, a frame block 21, a second support stand 22, a second contact roller 23 and a movable displacement support 24. The side end of the movable displacement support 24 is fixedly connected to the frame block 21, and the frame block 21 is rotatably connected to the screw rod 20. The motor seat 19 drives the screw rod 20 to be rotatably connected to the frame block 21. The upper end of the screw rod 20 is threadedly connected to the second support stand 22, and the upper end of the second support stand 22 is rotatably connected to the second contact roller 23.

[0039] The regulating support component 18 includes a third contact roller 25, a third support stand 26 and a support limit stand 27. The upper end of the third support stand 26 is rotatably connected to the third contact roller 25. The third support stand 26 is movably connected to the support limit stand 27. The third support stand 26 can slide on the support limit stand 27. At the same time, the third support stand 26 can be rotated and adjusted on the support limit stand 27. When reversing adjustment is required, the reduction motor 34 is driven to drive the second gear plate 35 and the fitting plate 36 to rotate, and the second gear plate 35 and the first gear plate 32 is engaged, which can drive the connecting plate 31 to move synchronously, so that the cooperation with the hinged bottom block 30 drives the second hydraulic control cylinder 29 and the fixed top block 28 to move together, and at the same time, the third contact roller 25 and the third contact roller 25 are also rotated and matched on the support limit stand 27 and adjusted to the longitudinal position. At this time, the electric-controlled hydraulic guide rod 12 can be telescopically controlled, and through the cooperation of the docking hinge frame 10 and the adapter ring frame 11, it drives the first contact roller 8 and the first support stand 9 to be flipped and adjusted through the second docking hinge seat 15. At this time, the first contact roller 8 can also support the turbine accessories.

[0040] The regulating support component 18 also includes a fixed top block 28, a second hydraulic control cylinder 29, a matching hinged bottom block 30, a connecting plate 31, a first toothed plate 32, a protective base 33, a reduction motor 34, a second toothed plate 35, a fitting plate 36 and a limit pad bottom protection block 37. The protection base 33 is equipped with a reduction motor 34, the upper end of the reduction motor 34 is drivingly connected to the second toothed plate 35, the upper end of the second toothed plate 35 is fixedly connected to the fitting plate 36, the side end of the second toothed plate 35 is meshingly connected to the first toothed plate 32, and the first toothed plate 32 is meshingly connected to the first toothed plate 32. The upper end of the connecting plate 31 is fixedly connected, and the side end of the connecting plate 31 is fixedly connected to the matching hinged bottom block 30, and the upper end of the matching hinged bottom block 30 is hingedly provided with a second hydraulic control cylinder 29, and the upper end of the second hydraulic control cylinder 29 is hingedly provided with a fixed top block 28, and the upper end of the fixed top block 28 is fixedly connected to the third support stand 26, and the third support stand 26 is connected to the center of the support and limit stand 27, and the limit pad bottom block 37 is fixed to the bottom of the support and limit stand 27. When it needs to be adjusted to the lateral position, Figure 1 , Figure 2As shown, at this time, the position of the propulsion guide rod 6 can be changed by extending and retracting the first hydraulic control cylinder 3, so that the movable displacement support 24 moves on the limit guide rod 4 and the fixed bracket 5, so that the supporting and stabilizing structure 2 moves as a whole. After reaching the appropriate position, the user can control the motor seat 19 to work according to needs, drive the screw rod 20 to rotate, thereby changing the position of the second support stand 22 on the frame block 21. The second support stand 22 is rotatably provided with a second contact roller 23. At this time, the turbine accessories are placed on the second contact roller 23, and the third contact roller 25 and the third support stand 26 can also be moved. It rotates, and there are two regulating support components 18. The regulating support component 18 on the other side lacks the protective base 33, the reduction motor 34, the second gear plate 35 and the fitting plate 36. It is a driven structure and can be controlled by the engagement of the first gear plate 32. At this time, the user can control the extension and retraction of the second hydraulic control cylinder 29 to drive the fixed top block 28 to change the height, so that the fixed top block 28 drags the third contact roller 25 and the third support stand 26 to move on the support limit stand 27 to achieve the support purpose, thereby performing adjustment control at different heights. At this time, the second support stand 22 and the second contact roller 23 do not provide support.

[0041] The limiting pad bottom protection block 37 is fixed to the supporting limiting stand 27 , and the lower end of the limiting pad bottom protection block 37 is fixed to the protection base 33 , and the connecting plates 31 are rotatably connected at the lower end of the limiting pad bottom protection block 37 .

[0042] The motor seat 19 drives the second support frame 22 to be slidably connected on the frame block 21 through the screw rod 20, and the upper end of the second support frame 22 supports the steam turbine through the second contact roller 23.

[0043] The side end of the fixed base frame 16 is fixedly connected to the fixed bracket 5 , the side end of the propulsion guide rod 6 is fixedly connected to the movable displacement support 24 , and the movable displacement support 24 is slidably connected on the limiting guide rod 4 and the fixed bracket 5 .

[0044] When the first toothed disc 32 rotates, it drives the connecting disc 31 and the articulated bottom block 30 to rotate synchronously, and the upper end of the articulated bottom block 30 changes the height of the fixed top block 28 through the second hydraulic control cylinder 29, so that the third support stand 26 moves and adjusts on the support limit stand 27.

[0045] The working principle is: when in use, the user can adjust it according to the needs. When it needs to be adjusted to the horizontal position, Figure 1 , Figure 2As shown, at this time, the position of the propulsion guide rod 6 can be changed by extending and retracting the first hydraulic control cylinder 3, so that the movable displacement support 24 moves on the limiting guide rod 4 and the fixed bracket 5, so that the supporting and stabilizing structure 2 moves as a whole. After reaching the appropriate position, the user can control the motor seat 19 to work according to needs, drive the screw rod 20 to rotate, thereby changing the position of the second support stand 22 on the frame block 21. The second support stand 22 is rotatably provided with a second contact roller 23. At this time, the turbine accessories are placed on the second contact roller 23, and the third contact roller 25 and the third support stand 26 can also rotate. There are two regulating support components 18. The regulating support component 18 on the other side lacks the protective base 33, the reduction motor 34, the second gear plate 35 and the fitting plate 36. It is a driven structure and can be controlled by the meshing of the first gear plate 32. At this time, the user can control the extension and retraction of the second hydraulic control cylinder 29 to drive the fixed top block 28 to change the height, so that the fixed top block 2 8 drags the third contact roller 25 and the third support platform 26 to move on the support limit platform 27 to achieve the support purpose, thereby performing adjustment control at different heights. At this time, the second support platform 22 and the second contact roller 23 do not provide support. When reversing adjustment is required, the reduction motor 34 is driven to drive the second gear plate 35 and the fitting plate 36 to rotate. The second gear plate 35 is engaged with the first gear plate 32, and can drive the connecting plate 31 to move synchronously, so that the hinged bottom block 30 drives the second hydraulic control cylinder 29 and the fixed top block 28 to move together. At the same time, the third contact roller 25 and the third contact roller 25 are also rotated and matched on the support limit platform 27 to be adjusted to the longitudinal position. At this time, the electric control hydraulic guide rod 12 can be telescopically controlled, and through the cooperation of the docking hinge frame 10 and the adapter ring frame 11, the first contact roller 8 and the first support platform 9 are driven to flip and adjust through the second docking hinge seat 15. At this time, the first contact roller 8 can also support the turbine accessories to complete the work.

[0046] 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 maintenance support mechanism for a power plant, characterized in that: It comprises a control and adjustment structure (1) and a support and stabilization structure (2), wherein the control and adjustment structure (1) is slidably connected to the support and stabilization structure (2); The control and adjustment structure (1) comprises a first hydraulic control cylinder (3), a limiting guide rod (4), a fixed bracket (5), a propulsion guide rod (6) and a matching adjustment component (7); the first hydraulic control cylinder (3) is fixedly mounted on the side end of the fixed bracket (5); the side end of the first hydraulic control cylinder (3) is telescopically connected to the propulsion guide rod (6); the center of the fixed bracket (5) is fixedly connected to the limiting guide rod (4); and the right side of the fixed bracket (5) is fixedly connected to the matching adjustment component (7); The supporting and stabilizing structure (2) comprises a supporting displacement component (17) and a regulating support component (18), and the regulating support component (18) is fixedly connected to the supporting displacement component (17).

2. A steam turbine maintenance support mechanism for a power plant according to claim 1, characterized in that: The matching adjustment component (7) comprises a first contact roller (8), a first support frame (9), a butt hinge frame (10), an adaptor ring frame (11), an electrically controlled hydraulic guide rod (12), a first butt hinge seat (13), a combined support (14), a second butt hinge seat (15) and a fixed base frame (16); the combined support (14) is fixedly connected to the first butt hinge seat (13); the first butt hinge seat (13) is hingedly provided with an electrically controlled hydraulic guide rod (12); the upper end of the electrically controlled hydraulic guide rod (12) is fixedly connected to the adaptor ring frame (11); the upper end of the adaptor ring frame (11) is hingedly arranged with the butt hinge frame (10); the rear end of the butt hinge frame (10) is fixedly connected to the first support frame (9); the upper end of the first support frame (9) is rotatably connected to the first contact roller (8).

3. A steam turbine maintenance support mechanism for a power plant according to claim 2, characterized in that: The lower end of the first support frame (9) is hinged to the second butt hinge seat (15), and the lower end of the second butt hinge seat (15) is fixedly connected to the fixed base frame (16). The electrically controlled hydraulic guide rod (12) controls the first contact roller (8) and the first support frame (9) to rotate around the second butt hinge seat (15) by telescoping.

4. A steam turbine maintenance support mechanism for a power plant according to claim 3, characterized in that: The support displacement component (17) comprises a motor seat (19), a screw rod (20), a frame block (21), a second support platform (22), a second contact roller (23) and a movable displacement support (24); the side end of the movable displacement support (24) is fixedly connected to the frame block (21); the frame block (21) is rotatably connected to the screw rod (20); the motor seat (19) drives the screw rod (20) to be rotatably connected to the frame block (21); the upper end of the screw rod (20) is threadedly connected to the second support platform (22); the upper end of the second support platform (22) is rotatably connected to the second contact roller (23).

5. A steam turbine maintenance support mechanism for a power plant according to claim 4, characterized in that: The regulating support component (18) comprises a third contact roller (25), a third support frame (26) and a support limit frame (27); the upper end of the third support frame (26) is rotatably connected to the third contact roller (25); the third support frame (26) is movably connected to the support limit frame (27); the third support frame (26) can slide on the support limit frame (27); and the third support frame (26) can be rotatably adjusted on the support limit frame (27).

6. A steam turbine maintenance support mechanism for a power plant according to claim 5, characterized in that: The regulating support component (18) further comprises a fixed top block (28), a second hydraulic control cylinder (29), a cooperating hinged bottom block (30), a connecting plate (31), a first toothed plate (32), a protective base (33), a reduction motor (34), a second toothed plate (35), a bonding plate (36) and a limit pad bottom protection block (37); a reduction motor (34) is mounted on the protective base (33); the upper end of the reduction motor (34) is drivingly connected to the second toothed plate (35); the upper end of the second toothed plate (35) is fixedly connected to the bonding plate (36); the side end of the second toothed plate (35) is meshingly connected to the first toothed plate (32); The first toothed disc (32) is fixedly connected to a connecting disc (31) at its upper end, and a side end of the connecting disc (31) is fixedly connected to a matching hinged bottom block (30). A second hydraulic control cylinder (29) is hingedly provided at the upper end of the matching hinged bottom block (30), and a fixed top block (28) is hingedly provided at the upper end of the second hydraulic control cylinder (29). The upper end of the fixed top block (28) is fixedly connected to a third support frame (26), and the third support frame (26) is connected to the center of the support and limit frame (27), and a limit pad bottom block (37) is fixed to the bottom of the support and limit frame (27).

7. A steam turbine maintenance support mechanism for a power plant according to claim 6, characterized in that: The limiting pad bottom protection block (37) is fixed to the supporting limiting stand (27), and the lower end of the limiting pad bottom protection block (37) is fixed to the protection base (33), and the connecting disk (31) and the connecting disk (31) are rotatably connected at the lower end of the limiting pad bottom protection block (37).

8. A steam turbine maintenance support mechanism for a power plant according to claim 7, characterized in that: The motor seat (19) drives the second support frame (22) to be slidably connected on the frame block (21) through the screw rod (20), and the upper end of the second support frame (22) supports the steam turbine through the second contact roller (23).

9. A steam turbine maintenance support mechanism for a power plant according to claim 8, characterized in that: The side end of the fixed base frame (16) is fixedly connected to the fixed bracket (5), the side end of the propulsion guide rod (6) is fixedly connected to the movable displacement support (24), and the movable displacement support (24) is slidably connected to the limiting guide rod (4) and the fixed bracket (5).

10. A steam turbine maintenance support mechanism for a power plant according to claim 9, characterized in that: When the first toothed disc (32) rotates, it drives the connecting disc (31) and the articulated bottom block (30) to rotate synchronously, and the upper end of the articulated bottom block (30) changes the height of the fixed top block (28) through the second hydraulic control cylinder (29), so that the third support stand (26) moves and adjusts on the support limit stand (27).

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