Stable lifting tool for turbine bearing maintenance

Abstract

The present application relates to the technical field of steam turbine bearing maintenance, in particular to a stable lifting tool for steam turbine bearing maintenance, which moves the car body to make the turnover mechanism above the steam turbine, lowers the turnover mechanism through the supporting mechanism to make the position adjusting mechanism clamp the steam turbine, turns the steam turbine by 90 degrees through the turnover mechanism, raises the turnover mechanism through the supporting mechanism, then the staff disassembles each part on the steam turbine, adjusts the position of the disassembled steam turbine parts through the position adjusting mechanism, which is convenient for the staff to maintain the steam turbine bearing and other parts of the steam turbine, thereby improving the practicability of the equipment; including a car body; further including a supporting mechanism, a turnover mechanism and a position adjusting mechanism, the supporting mechanism is installed on the car body, the turnover mechanism is installed on the supporting mechanism, and the position adjusting mechanism is installed on the turnover mechanism.

Description

Technical Field

[0001] This invention relates to the technical field of turbine bearing maintenance, and in particular to a stable lifting fixture for turbine bearing maintenance. Background Technology

[0002] A steam turbine, also known as a steam turbine 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 equipped with a row of blades to rotate. At the same time, it performs work to generate electricity. After a long period of use, the bearings of a steam turbine need to be inspected.

[0003] The traditional method involves using a turbine rotor lifting tool disclosed in invention patent CN101670975B and another disclosed in invention patent CN112744687A to sequentially lift the turbine's top casing, upper bearing, rotor, and lower bearing, and place them in a designated position. Specific tooling is then required to support the rotor before the bearings and other components are inspected and repaired.

[0004] However, during the overhaul of small and medium-sized steam turbines, it was found that the components were prone to swaying when being lifted and moved, leading to collisions between them. Due to the weight of these components, these collisions could directly damage them, requiring repair or replacement. Furthermore, suitable support fixtures for the rotor were needed. The disassembled bearings and other components also required separate support equipment for maintenance. When reinstalling, each component needed to be precisely reset, but the swaying during lifting made this difficult, resulting in poor practicality. Therefore, there is an urgent need for a stable lifting fixture for steam turbine bearing maintenance to address these issues. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a stable lifting fixture for turbine bearing maintenance. This fixture is designed to be moved by the vehicle body, positioning a tilting mechanism above a steam turbine. A support mechanism lowers the tilting mechanism, allowing a position adjustment mechanism to clamp the steam turbine. The tilting mechanism then rotates the steam turbine 90 degrees and is raised again by the support mechanism. Workers can then disassemble various components of the steam turbine and adjust the positions of these components using the position adjustment mechanism. This facilitates the maintenance of the steam turbine bearings and other components, thereby improving the practicality of the equipment.

[0006] The present invention provides a stable lifting fixture for turbine bearing maintenance, comprising a vehicle body; and further comprising a support mechanism, a tilting mechanism, and a position adjustment mechanism, wherein the support mechanism is mounted on the vehicle body, the tilting mechanism is mounted on the support mechanism, and the position adjustment mechanism is mounted on the tilting mechanism.

[0007] The support mechanism adjusts the height of the tilting mechanism, the tilting mechanism tilts the steam turbine, and the position adjustment mechanism adjusts the position of each component of the steam turbine.

[0008] By moving the vehicle body, the tilting mechanism is positioned above the steam turbine. The tilting mechanism is then lowered by the support mechanism, allowing the position adjustment mechanism to clamp the steam turbine. The steam turbine is then tilted 90 degrees by the tilting mechanism, and then raised again by the support mechanism. Afterward, workers can disassemble the various components of the steam turbine and adjust the positions of the disassembled components using the position adjustment mechanism. This facilitates the maintenance of the steam turbine bearings and other components, thereby improving the practicality of the equipment.

[0009] Preferably, the vehicle body includes a frame, multiple sets of drive wheels, multiple sets of first hydraulic arms, and multiple sets of support blocks. The multiple sets of drive wheels and multiple sets of first hydraulic arms are all installed at the bottom of the frame, and the multiple sets of support blocks are respectively installed at the bottom ends of the multiple sets of first hydraulic arms. By rotating the multiple sets of drive wheels, the position of the frame is adjusted, making it convenient to move the tooling to a suitable position. Afterwards, when the position adjustment mechanism clamps the turbine, the multiple sets of first hydraulic arms extend, so that the multiple sets of support blocks support the ground, maintaining the stability of the tooling and reducing the pressure on the multiple sets of drive wheels, thereby improving the practicality of the equipment.

[0010] Preferably, the support mechanism includes multiple sets of second hydraulic arms, two sets of crossbeams, two sets of first motors, and two sets of drive shafts. The multiple sets of second hydraulic arms are all mounted on the frame, the two sets of crossbeams are respectively mounted on the multiple sets of second hydraulic arms, the two sets of first motors are respectively mounted on the two sets of crossbeams, one end of each set of drive shafts is connected to the output end of the two sets of first motors, and the other end of each set of drive shafts is mounted on the tilting mechanism. By extending or retracting the multiple sets of second hydraulic arms, the height of the tilting mechanism is adjusted. Then, by activating the two sets of first motors, the tilting mechanism is driven to rotate, thereby adjusting the angle of the steam turbine, thus improving the practicality of the equipment.

[0011] Preferably, the tilting mechanism includes a frame, multiple sets of hydraulic cylinders, and multiple sets of brake pads. The front and rear ends of the frame are rotatably mounted on the other ends of two sets of drive shafts, the multiple sets of hydraulic cylinders are fixedly mounted on two sets of crossbeams, and the two sets of brake pads are mounted on one end of the multiple sets of hydraulic cylinders. By activating the two sets of first motors to drive the frame 90 degrees, and then by extending the multiple sets of hydraulic cylinders to clamp the multiple sets of brake pads on the two sets of drive shafts, the rotated frame is limited, thereby improving the safety of the equipment.

[0012] Preferably, the position adjustment mechanism includes a housing splitting mechanism, a rotor splitting mechanism, and a bearing splitting mechanism. The housing splitting mechanism and the rotor splitting mechanism are both mounted on the frame, and the bearing splitting mechanism is mounted on the rotor splitting mechanism.

[0013] The casing disassembly mechanism disassembles the turbine casing, the rotor disassembly mechanism disassembles the turbine rotor, and the bearing disassembly mechanism disassembles the turbine bearings. By separating the turbine casing through the casing disassembly mechanism, separating the rotor from the turbine body through the rotor disassembly mechanism, and separating the bearings from the rotor through the bearing disassembly mechanism, it is convenient for staff to inspect and maintain the bearings and various components of the turbine, thereby improving the practicality of the equipment.

[0014] Preferably, the casing splitting mechanism includes multiple sets of third hydraulic arms, multiple sets of first clamps, a first frame, multiple sets of fourth hydraulic arms, and multiple sets of extrusion seats. One end of each set of third hydraulic arms is mounted on the top of the frame, the multiple sets of first clamps are respectively mounted on the other end of each set of third hydraulic arms, the first frame is mounted on the frame, one end of each set of fourth hydraulic arms is mounted on the first frame, and the multiple sets of extrusion seats are respectively mounted on the other end of each set of fourth hydraulic arms. By extending the multiple sets of third hydraulic arms, the position of the multiple sets of first clamps is adjusted. Then, the top casing of the turbine is clamped by the multiple sets of first clamps. By extending the multiple sets of fourth hydraulic arms, the multiple sets of extrusion seats clamp the bottom casing of the turbine. Finally, by retracting the multiple sets of third hydraulic arms, the turbine casing is separated, thereby improving the practicality of the equipment.

[0015] Preferably, the rotor splitting mechanism includes a second frame, multiple sets of fifth hydraulic arms, and multiple sets of second clamps. The second frame is mounted on the frame and is located above the first frame. One end of each of the multiple sets of fifth hydraulic arms is mounted on the second frame, and the multiple sets of second clamps are respectively mounted on the other end of each of the multiple sets of fifth hydraulic arms. By extending the multiple sets of fifth hydraulic arms, the multiple sets of second clamps clamp the turbine rotor, thereby facilitating the splitting of the turbine rotor.

[0016] Preferably, the assembly also includes multiple sets of first racks, multiple sets of slide rails, multiple sets of gearboxes, multiple sets of second motors, and multiple sets of gears. The multiple sets of first racks and slide rails are respectively installed at the front and rear of the frame. The multiple sets of gearboxes are respectively fixedly installed on the first frame and the second frame. The multiple sets of second motors are respectively installed on the multiple sets of gearboxes, and the output ends of the multiple sets of second motors are respectively connected to the input ends of the multiple sets of gearboxes. The multiple sets of gears are respectively installed on the output ends of the multiple sets of gearboxes, and the multiple sets of gears are respectively meshed with the multiple sets of first racks. By opening the bottom second motor, which drives the first frame downwards via the bottom gearbox and then via the bottom gear meshing with the first rack, the first frame is moved downwards, facilitating the retraction of the first frame in conjunction with the third hydraulic arm. Simultaneously, the top and bottom casings of the turbine are separated. Then, by opening the top second motor, which drives the second frame upwards via the top gearbox and then via the top gear meshing with the first rack, the second frame is moved upwards, facilitating the adjustment of the rotor position, thereby improving the practicality of the equipment.

[0017] Preferably, the bearing separation mechanism comprises multiple sets of sixth hydraulic arms, multiple sets of third clamps, multiple sets of drive motors, multiple sets of cylinders, and multiple sets of screws. The multiple sets of sixth hydraulic arms are all mounted on the second frame. The multiple sets of third clamps are each mounted on one end of one of the multiple sets of sixth hydraulic arms, and each set of third clamps has multiple sets of through holes. The multiple sets of drive motors are each fixedly mounted on the multiple sets of third clamps. One end of each set of cylinders is connected to the output end of the multiple sets of drive motors, and the other end of each set of cylinders is connected to one end of each set of screws. Each set of cylinders is equipped with a spring. By extending the multiple sets of sixth hydraulic arms, the multiple sets of third clamps limit the bearing position. Then, the operator removes the bolts on the bearing top and bottom shells. The multiple sets of cylinders then extend, simultaneously activating the multiple sets of drive motors to rotate the multiple sets of screws, causing the screws to thread into the bearing top and bottom shells respectively. Finally, by retracting the multiple sets of sixth hydraulic arms, the bearing top and bottom shells separate, facilitating the operator's inspection and maintenance of various components on the bearing, thereby improving the practicality of the equipment.

[0018] Preferably, multiple sets of second racks are provided on the inner wall of the second frame, and each of the multiple sets of sixth hydraulic arms is equipped with a drive device. The sixth hydraulic arm is driven by the drive device inside the sixth hydraulic arm to slide on the second rack, thereby adjusting the position of the bearing and moving the bearing away from the rotor. This makes it easier for the staff to inspect and maintain the various components on the bearing, thereby improving the practicality of the equipment.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. By tilting and disassembling the steam turbine, it is convenient to disassemble various components of the steam turbine and support and store them in place, reducing the need for separate support equipment;

[0021] 2. The rigid structure reduces collisions between components, improving the stability and precision of disassembly and installation;

[0022] 3. By supporting and storing each component in place, the space occupied during maintenance is reduced, making it easier for staff to inspect bearings and other components, and to observe the damaged parts of the components and their corresponding other parts. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first isometric structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the second isometric structure of the present invention;

[0025] Figure 3 This is a front view structural diagram of the present invention;

[0026] Figure 4 This is a frontal cross-sectional structural diagram of the present invention;

[0027] Figure 5 This is an axonometric enlarged structural diagram of the vehicle body and support mechanism of the present invention;

[0028] Figure 6 This is an isometric enlarged structural diagram of the flipping mechanism and position adjustment mechanism of the present invention;

[0029] Figure 7 This is a cross-sectional enlarged structural schematic diagram of the flipping mechanism and the position adjustment mechanism of the present invention;

[0030] Figure 8 This is the present invention. Figure 7 A magnified structural diagram of part A in the diagram;

[0031] Figure 9 This is an enlarged isometric view of the bearing splitting mechanism of the present invention;

[0032] Figure 10 This is a right-view enlarged structural schematic diagram of the bearing splitting mechanism of the present invention;

[0033] The following are labels in the attached diagram: 1. Frame; 2. Drive wheel; 3. First hydraulic arm; 4. Support block; 5. Second hydraulic arm; 6. Crossbeam; 7. First motor; 8. Drive shaft; 9. Frame; 10. Hydraulic cylinder; 11. Brake pad; 12. Third hydraulic arm; 13. First clamp; 14. First frame; 15. Fourth hydraulic arm; 16. Press seat; 17. Second frame; 18. Fifth hydraulic arm; 19. Second clamp; 20. First rack; 21. Slide rail; 22. Gearbox; 23. Second motor; 24. Gear; 25. Sixth hydraulic arm; 26. Third clamp; 27. Through hole; 28. Drive motor; 29. ​​Cylinder; 30. Spring; 31. Screw; 32. Second rack. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0035] Example 1

[0036] like Figures 1 to 4 As shown, it includes the vehicle body; it also includes a support mechanism, a tilting mechanism and a position adjustment mechanism. The support mechanism is mounted on the vehicle body, the tilting mechanism is mounted on the support mechanism, and the position adjustment mechanism is mounted on the tilting mechanism.

[0037] The support mechanism adjusts the height of the tilting mechanism, the tilting mechanism tilts the steam turbine, and the position adjustment mechanism adjusts the position of each component of the steam turbine.

[0038] like Figure 5 As shown, the vehicle body includes a frame 1, multiple sets of drive wheels 2, multiple sets of first hydraulic arms 3, and multiple sets of support blocks 4. The multiple sets of drive wheels 2 and multiple sets of first hydraulic arms 3 are all installed at the bottom of the frame 1, and the multiple sets of support blocks 4 are respectively installed at the bottom ends of the multiple sets of first hydraulic arms 3.

[0039] like Figure 5 As shown, the support mechanism includes multiple sets of second hydraulic arms 5, two sets of crossbeams 6, two sets of first motors 7, and two sets of drive shafts 8. The multiple sets of second hydraulic arms 5 are all mounted on the frame 1. The two sets of crossbeams 6 are respectively mounted on the multiple sets of second hydraulic arms 5. The two sets of first motors 7 are respectively mounted on the two sets of crossbeams 6. One end of the two sets of drive shafts 8 is respectively connected to the output end of the two sets of first motors 7, and the other end of the two sets of drive shafts 8 is mounted on the tilting mechanism.

[0040] like Figure 6 and Figure 7As shown, the tilting mechanism includes a frame 9, multiple sets of hydraulic cylinders 10 and multiple sets of brake pads 11. The front and rear ends of the frame 9 are rotatably mounted on the other ends of two sets of transmission shafts 8, the multiple sets of hydraulic cylinders 10 are fixedly mounted on two sets of crossbeams 6, and the two sets of brake pads 11 are mounted on one end of the multiple sets of hydraulic cylinders 10.

[0041] like Figure 6 , Figure 7 and Figure 8 As shown, the housing splitting mechanism includes multiple sets of third hydraulic arms 12, multiple sets of first clamps 13, a first frame 14, multiple sets of fourth hydraulic arms 15, and multiple sets of extrusion seats 16. One end of each set of third hydraulic arms 12 is mounted on the top of the frame 9, the multiple sets of first clamps 13 are respectively mounted on the other end of each set of third hydraulic arms 12, the first frame 14 is mounted on the frame 9, one end of each set of fourth hydraulic arms 15 is mounted on the first frame 14, and the multiple sets of extrusion seats 16 are respectively mounted on the other end of each set of fourth hydraulic arms 15.

[0042] like Figure 6 , Figure 7 and Figure 8 As shown, the rotor splitting mechanism includes a second frame 17, multiple sets of fifth hydraulic arms 18, and multiple sets of second clamps 19. The second frame 17 is mounted on the frame 9 and is located above the first frame 14. One end of each of the multiple sets of fifth hydraulic arms 18 is mounted on the second frame 17, and the multiple sets of second clamps 19 are respectively mounted on the other end of the multiple sets of fifth hydraulic arms 18.

[0043] like Figure 8 As shown, it also includes multiple sets of first racks 20, multiple sets of slide rails 21, multiple sets of gearboxes 22, multiple sets of second motors 23, and multiple sets of gears 24. The multiple sets of first racks 20 and multiple sets of slide rails 21 are respectively installed at the front and rear of the frame 9. The multiple sets of gearboxes 22 are respectively fixedly installed on the first frame 14 and the second frame 17. The multiple sets of second motors 23 are respectively installed on the multiple sets of gearboxes 22, and the output ends of the multiple sets of second motors 23 are respectively connected to the input ends of the multiple sets of gearboxes 22. The multiple sets of gears 24 are respectively installed on the output ends of the multiple sets of gearboxes 22, and the multiple sets of gears 24 are respectively meshed with the multiple sets of first racks 20.

[0044] The position of the frame 1 is adjusted by rotating multiple sets of drive wheels 2. The height of the tilting mechanism is adjusted by extending or retracting multiple sets of second hydraulic arms 5, so that the tilting mechanism is above the steam turbine. The tilting mechanism is lowered by the support mechanism, so that the position adjustment mechanism clamps the steam turbine. The frame 9 is driven 90 degrees by opening two sets of first motors 7. Then, multiple sets of hydraulic cylinders 10 extend to clamp two sets of drive shafts 8 respectively, limiting the rotation of the frame 9. At the same time, multiple sets of first hydraulic arms 3 extend to support multiple sets of support blocks 4 on the ground to maintain the stability of the tooling. The tilting mechanism is then raised by the support mechanism. Then, the shell disassembly mechanism and the rotor disassembly mechanism support the steam turbine shell and rotor. The operator then disassembles the various components on the steam turbine and adjusts multiple sets of third hydraulic arms 12 by extending them. The first clamp 13 is positioned first, and then the top shell of the turbine is clamped by multiple clamps 13. Multiple fourth hydraulic arms 15 extend, and multiple extrusion seats 16 clamp the bottom shell of the turbine. Multiple third hydraulic arms 12 retract, separating the turbine shell. At the same time, the bottom second motor 23 is opened, driven by the bottom gearbox 22, and then by the bottom gear 24 meshing with the first rack 20, moving the first frame 14 downward, facilitating the retraction of the first frame 14 in conjunction with the third hydraulic arms 12, and simultaneously separating the top and bottom shells of the turbine. Then, the top second motor 23 is opened, driven by the top gearbox 22, and then by the top gear 24 meshing with the first rack 20, moving the second frame 17 upward, adjusting the position of the rotor, facilitating the maintenance of other components of the turbine by the staff, thereby improving the practicality of the equipment.

[0045] Example 2

[0046] like Figures 1 to 4 As shown, it includes the vehicle body; it also includes a support mechanism, a tilting mechanism and a position adjustment mechanism. The support mechanism is mounted on the vehicle body, the tilting mechanism is mounted on the support mechanism, and the position adjustment mechanism is mounted on the tilting mechanism.

[0047] The support mechanism adjusts the height of the tilting mechanism, the tilting mechanism tilts the steam turbine, and the position adjustment mechanism adjusts the position of each component of the steam turbine.

[0048] like Figure 5 As shown, the vehicle body includes a frame 1, multiple sets of drive wheels 2, multiple sets of first hydraulic arms 3, and multiple sets of support blocks 4. The multiple sets of drive wheels 2 and multiple sets of first hydraulic arms 3 are all installed at the bottom of the frame 1, and the multiple sets of support blocks 4 are respectively installed at the bottom ends of the multiple sets of first hydraulic arms 3.

[0049] like Figure 5As shown, the support mechanism includes multiple sets of second hydraulic arms 5, two sets of crossbeams 6, two sets of first motors 7, and two sets of drive shafts 8. The multiple sets of second hydraulic arms 5 are all mounted on the frame 1. The two sets of crossbeams 6 are respectively mounted on the multiple sets of second hydraulic arms 5. The two sets of first motors 7 are respectively mounted on the two sets of crossbeams 6. One end of the two sets of drive shafts 8 is respectively connected to the output end of the two sets of first motors 7, and the other end of the two sets of drive shafts 8 is mounted on the tilting mechanism.

[0050] like Figure 6 and Figure 7 As shown, the tilting mechanism includes a frame 9, multiple sets of hydraulic cylinders 10 and multiple sets of brake pads 11. The front and rear ends of the frame 9 are rotatably mounted on the other ends of two sets of transmission shafts 8, the multiple sets of hydraulic cylinders 10 are fixedly mounted on two sets of crossbeams 6, and the two sets of brake pads 11 are mounted on one end of the multiple sets of hydraulic cylinders 10.

[0051] like Figures 6 to 10 As shown, the position adjustment mechanism includes a housing splitting mechanism, a rotor splitting mechanism, and a bearing splitting mechanism. The housing splitting mechanism and the rotor splitting mechanism are both mounted on the frame 9, and the bearing splitting mechanism is mounted on the rotor splitting mechanism.

[0052] The casing splitting mechanism splits the turbine casing, the rotor splitting mechanism splits the turbine rotor, and the bearing splitting mechanism splits the turbine bearing;

[0053] like Figure 6 , Figure 7 and Figure 8 As shown, the housing splitting mechanism includes multiple sets of third hydraulic arms 12, multiple sets of first clamps 13, a first frame 14, multiple sets of fourth hydraulic arms 15, and multiple sets of extrusion seats 16. One end of each set of third hydraulic arms 12 is mounted on the top of the frame 9, the multiple sets of first clamps 13 are respectively mounted on the other end of each set of third hydraulic arms 12, the first frame 14 is mounted on the frame 9, one end of each set of fourth hydraulic arms 15 is mounted on the first frame 14, and the multiple sets of extrusion seats 16 are respectively mounted on the other end of each set of fourth hydraulic arms 15.

[0054] like Figure 6 , Figure 7 and Figure 8 As shown, the rotor splitting mechanism includes a second frame 17, multiple sets of fifth hydraulic arms 18, and multiple sets of second clamps 19. The second frame 17 is mounted on the frame 9 and is located above the first frame 14. One end of each of the multiple sets of fifth hydraulic arms 18 is mounted on the second frame 17, and the multiple sets of second clamps 19 are respectively mounted on the other end of the multiple sets of fifth hydraulic arms 18.

[0055] like Figure 8As shown, it also includes multiple sets of first racks 20, multiple sets of slide rails 21, multiple sets of gearboxes 22, multiple sets of second motors 23, and multiple sets of gears 24. The multiple sets of first racks 20 and multiple sets of slide rails 21 are respectively installed at the front and rear of the frame 9. The multiple sets of gearboxes 22 are respectively fixedly installed on the first frame 14 and the second frame 17. The multiple sets of second motors 23 are respectively installed on the multiple sets of gearboxes 22, and the output ends of the multiple sets of second motors 23 are respectively connected to the input ends of the multiple sets of gearboxes 22. The multiple sets of gears 24 are respectively installed on the output ends of the multiple sets of gearboxes 22, and the multiple sets of gears 24 are respectively meshed with the multiple sets of first racks 20.

[0056] like Figure 9 and Figure 10 As shown, the bearing splitting mechanism comprises multiple sets of sixth hydraulic arms 25, multiple sets of third clamps 26, multiple sets of drive motors 28, multiple sets of cylinders 29, and multiple sets of screws 31. The multiple sets of sixth hydraulic arms 25 are all mounted on the second frame 17. The multiple sets of third clamps 26 are respectively mounted on one end of the multiple sets of sixth hydraulic arms 25, and each set of third clamps 26 is provided with multiple sets of through holes 27. The multiple sets of drive motors 28 are respectively fixedly mounted on the multiple sets of third clamps 26. One end of each set of cylinders 29 is connected to the output end of each set of drive motors 28, and the other end of each set of cylinders 29 is connected to one end of each set of screws 31. Each set of cylinders 29 is provided with a spring 30.

[0057] like Figure 10 As shown, multiple sets of second racks 32 are provided on the inner wall of the second frame 17, and multiple sets of sixth hydraulic arms 25 are each provided with a drive device inside.

[0058] The position of the frame 1 is adjusted by rotating multiple sets of drive wheels 2. The height of the tilting mechanism is adjusted by extending or retracting multiple sets of second hydraulic arms 5, so that the tilting mechanism is above the steam turbine. The tilting mechanism is lowered by the support mechanism, so that the position adjustment mechanism clamps the steam turbine. The frame 9 is driven 90 degrees by activating two sets of first motors 7. Then, multiple sets of hydraulic cylinders 10 extend to clamp two sets of drive shafts 8 with multiple sets of brake pads 11, limiting the rotation of the frame 9. At the same time, multiple sets of first hydraulic arms 3 extend to support multiple sets of support blocks 4 on the ground, maintaining the tooling. To ensure stability, the tilting mechanism is raised via a support mechanism. Then, the casing and rotor disassembly mechanisms support the turbine casing and rotor. Workers then disassemble the various components of the turbine, extending multiple sets of third hydraulic arms 12 to adjust the positions of multiple sets of first clamps 13. The top casing of the turbine is then clamped by the multiple sets of first clamps 13. Multiple sets of fourth hydraulic arms 15 extend to clamp the bottom casing of the turbine by multiple sets of compression seats 16. Finally, the third hydraulic arms 12 retract to separate the turbine casing. Simultaneously, the second motor 23 at the bottom is activated. Driven by the bottom gearbox 22, and then by the bottom gear 24 meshing with the first rack 20, the first frame 14 moves downward, facilitating the retraction of the first frame 14 in conjunction with the third hydraulic arm 12. Simultaneously, the top and bottom casings of the turbine are separated. Then, by opening the top second motor 23, driven by the top gearbox 22, and then by the top gear 24 meshing with the first rack 20, the second frame 17 moves upward, adjusting the rotor's position. Then, multiple sets of sixth hydraulic arms 25 extend, causing multiple sets of third clamps 26 to limit the bearing. Finally, the operator attaches the bearing top shell to the bearing... The bolts on the bottom bearing shell are removed, and then extended by multiple sets of cylinders 29. At the same time, multiple sets of drive motors 28 are turned on to drive multiple sets of screws 31 to rotate, so that the multiple sets of screws 31 are threadedly connected to the bearing top shell and the bearing bottom shell respectively. Then, the multiple sets of sixth hydraulic arms 25 retract to separate the bearing top shell from the bearing bottom shell. Then, the drive device inside the sixth hydraulic arm 25 drives the sixth hydraulic arm 25 to slide on the second rack 32 to adjust the position of the bearing, so that the bearing is away from the rotor. This makes it easier for the staff to inspect and maintain various components on the turbine shaft and other components of the turbine, thereby improving the practicality of the equipment.

[0059] The main functions achieved by this invention are: improving the convenience of turbine bearing maintenance, reducing damage to turbine components, and reducing the use of support fixtures.

[0060] 1. Improve the convenience of turbine bearing maintenance: By disassembling the turbine in place, there is no need to lift and move the turbine components, making it convenient to remove the top and bottom shells of the turbine at the same time and expose the rotor;

[0061] 2. Reduce damage to turbine components: Adjust the position of turbine components using rigid parts to reduce component sway;

[0062] 3. Reduce the use of support fixtures: Improve the tooling for clamping and fixing turbine components, eliminating the need for support fixtures.

[0063] The vehicle body can be reinforced with counterweights to further improve the stability of the equipment; the drive wheel 2 can be selected to be electric or manual depending on the actual use; the drive device in the sixth hydraulic arm 25 consists of a motor, a gearbox, and gears; the first clamp 13 can be replaced with other types of clamping devices according to the shape of the turbine top shell; the second hydraulic arm 5, the first motor 7, the hydraulic cylinder 10, the third hydraulic arm 12, the first clamp 13, the fourth hydraulic arm 15, the fifth hydraulic arm 18, the gearbox 22, the second motor 23, the sixth hydraulic arm 25, the drive motor 28, and the cylinder 29 of the stabilizing lifting fixture for turbine bearing maintenance of the present invention are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0064] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A stable lifting tool for overhauling a turbine bearing, comprising a vehicle body; characterized in that, Also include support mechanism, turnover mechanism and position adjustment mechanism, support mechanism is installed on the car body, turnover mechanism is installed on the support mechanism, position adjustment mechanism is installed on the turnover mechanism; The support mechanism adjusts the height of the turnover mechanism, the turnover mechanism turns over the steam turbine, and the position adjustment mechanism adjusts the position of each part of the steam turbine; The car body includes a frame (1), a plurality of drive wheels (2), a plurality of first hydraulic arms (3) and a plurality of support blocks (4), the plurality of drive wheels (2) and the plurality of first hydraulic arms (3) are installed at the bottom of the frame (1), and the plurality of support blocks (4) are respectively installed at the bottom end of the plurality of first hydraulic arms (3). The support mechanism includes a plurality of second hydraulic arms (5), two cross beams (6), two first motors (7) and two transmission shafts (8), the plurality of second hydraulic arms (5) are installed on the frame (1), the two cross beams (6) are respectively installed on the plurality of second hydraulic arms (5), the two first motors (7) are respectively installed on the two cross beams (6), one end of the two transmission shafts (8) is respectively connected with the output end of the two first motors (7), and the other end of the two transmission shafts (8) is installed on the turnover mechanism. The turnover mechanism includes a rack (9), a plurality of hydraulic cylinders (10) and a plurality of brake pads (11), the front end and the rear end of the rack (9) are respectively rotatably installed on the other end of the two transmission shafts (8), the plurality of hydraulic cylinders (10) are respectively fixedly installed on the two cross beams (6), and the two brake pads (11) are respectively installed on one end of the plurality of hydraulic cylinders (10). The position adjustment mechanism includes a shell splitting mechanism, a rotor splitting mechanism and a bearing splitting mechanism, the shell splitting mechanism and the rotor splitting mechanism are installed on the rack (9), and the bearing splitting mechanism is installed on the rotor splitting mechanism. The shell splitting mechanism splits the shell of the steam turbine, the rotor splitting mechanism splits the rotor of the steam turbine, and the bearing splitting mechanism splits the bearing of the steam turbine.

2. The stable jacking tool for overhauling a turbine bearing according to claim 1, characterized by The shell splitting mechanism includes a plurality of third hydraulic arms (12), a plurality of first clamps (13), a first frame (14), a plurality of fourth hydraulic arms (15) and a plurality of extrusion seats (16), one end of the plurality of third hydraulic arms (12) is installed on the top of the rack (9), the plurality of first clamps (13) are respectively installed on the other end of the plurality of third hydraulic arms (12), the first frame (14) is installed on the rack (9), one end of the plurality of fourth hydraulic arms (15) is installed on the first frame (14), and the plurality of extrusion seats (16) are respectively installed on the other end of the plurality of fourth hydraulic arms (15).

3. The stable lifting tool for overhauling a bearing of a steam turbine according to claim 2, wherein The rotor splitting mechanism includes a second frame (17), a plurality of fifth hydraulic arms (18) and a plurality of second clamps (19), the second frame (17) is installed on the rack (9), and the second frame (17) is located above the first frame (14), one end of the plurality of fifth hydraulic arms (18) is installed on the second frame (17), and the plurality of second clamps (19) are respectively installed on the other end of the plurality of fifth hydraulic arms (18).

4. The stable lifting tool for overhauling a bearing of a steam turbine according to claim 3, wherein Also include a plurality of first rack (20), a plurality of slide rail (21), a plurality of gearbox (22), a plurality of second motor (23) and a plurality of gear (24), a plurality of first rack (20) and a plurality of slide rail (21) are installed in the front and rear of the frame (9), a plurality of gearbox (22) are fixedly installed on the first frame (14) and the second frame (17), a plurality of second motor (23) are installed on a plurality of gearbox (22), and the output end of a plurality of second motor (23) is connected with the input end of a plurality of gearbox (22), a plurality of gear (24) are installed on the output end of a plurality of gearbox (22), and a plurality of gear (24) are engaged with a plurality of first rack (20).

5. The stable lifting tool for the repair of a turbine bearing according to claim 3, wherein The bearing split mechanism a plurality of sixth hydraulic arm (25), a plurality of third clamp (26), a plurality of drive motor (28), a plurality of cylinder (29) and a plurality of screw rod (31), a plurality of sixth hydraulic arm (25) are installed on the second frame (17), a plurality of third clamp (26) are installed on one end of a plurality of sixth hydraulic arm (25), and a plurality of third clamp (26) are provided with a plurality of perforated (27), a plurality of drive motor (28) are fixedly installed on a plurality of third clamp (26), one end of a plurality of cylinder (29) is connected with the output end of a plurality of drive motor (28), the other end of a plurality of cylinder (29) is connected with one end of a plurality of screw rod (31), and a plurality of cylinder (29) are provided with a spring (30).

6. The stable lifting tool for overhauling a bearing of a steam turbine according to claim 5, wherein The inner wall of the second frame (17) is provided with a plurality of second rack (32), and the inside of a plurality of sixth hydraulic arm (25) is provided with a driving device.

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