A steam turbine overhauling hoisting device

Abstract

The application discloses a steam turbine maintenance hoisting equipment and belongs to the hoisting technical field.The steam turbine maintenance hoisting equipment comprises a portal frame, a sliding assembly is arranged on the portal frame in a sliding mode, extension assemblies are fixedly arranged on the outer walls of the two sides of the sliding assembly respectively, load-bearing assemblies are fixedly arranged on the two extension assemblies, first winding assemblies, second winding assemblies and third winding assemblies are fixedly arranged on the load-bearing assemblies respectively, positioning assemblies are further fixedly arranged on the first winding assemblies, the second winding assemblies and the third winding assemblies respectively, a push-pull assembly is further fixedly arranged on the load-bearing assembly, a driving assembly is fixedly arranged in the sliding assembly, a connecting assembly is inlaid and arranged in the inside of the output shaft of the driving assembly in a sliding mode, and the application realizes hoisting of multiple objects in one hoisting operation, so that multiple hoisting equipment are not needed to be used in cooperation, the degree of automation is high, the number of staff is reduced, and manpower is saved.

Description

Technical Field

[0001] This invention belongs to the field of hoisting technology, specifically, it relates to a steam turbine maintenance hoisting device. Background Technology

[0002] A steam turbine is a device that converts the thermal energy of steam into mechanical energy. It is a rotary power unit and mainly consists of a cylinder, a rotor, and other components. It is primarily used in industrial and power generation fields. To maintain the long-term stable operation of a steam turbine, it is necessary to perform regular maintenance. During the maintenance process, the steam turbine needs to be disassembled, so it is essential to use specialized hoisting equipment to lift the steam turbine.

[0003] Chinese patent CN219950419U discloses a steam turbine hoisting device, including a hoisting device and a positioning mechanism. The positioning mechanism is movably installed on the left and right sides of the hoisting device surface. The hoisting device includes an adjustment unit and a lifting unit, both of which are disposed on the hoisting device surface. A drive motor is fixedly installed on the left side of the outer surface of the protective shell, and a rotating rod is fixedly connected to the right side of the drive motor surface. A conveyor belt engages with both sides of the outer surface of the rotating rod. This prior art involves aligning the two sides of the steam turbine with the designated interface, then activating a hydraulic device. Under the action of the hydraulic telescopic rod, the positioning bearing is sleeved inside the interface, thus fixing the turbine shafts on both sides inside the interface. After the conveyor belt starts running, it drives the steam turbine to move up and down on the conveyor belt surface, thereby achieving the effect of hoisting the steam turbine. The operation is convenient and simple.

[0004] The turbine hoisting equipment proposed in the prior art can achieve the hoisting operation of the turbine. However, the turbine hoisting equipment disclosed in the prior art can only hoist one component of the turbine at a time. If multiple components of the turbine need to be hoisted at the same time, not only do multiple hoisting equipment need to be used in coordination, but also a large number of personnel are needed to assist in the operation of hoisting multiple components at the same time. This setup is not only labor-intensive, but also relatively cumbersome to operate.

[0005] Therefore, we propose a turbine maintenance and hoisting equipment to solve the problems mentioned above. Summary of the Invention

[0006] To address the problems of existing turbine hoisting equipment being able to hoist only one turbine component at a time, requiring multiple hoisting devices and a large number of personnel for simultaneous hoisting of multiple turbine components, which is relatively cumbersome, the present invention aims to provide a turbine maintenance hoisting device.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: A steam turbine maintenance and hoisting equipment includes a gantry frame, with a transfer mechanism respectively provided at the lower parts of both ends of the gantry frame. A sliding assembly is slidably mounted on the gantry frame, and extension assemblies are respectively fixedly mounted on the outer walls of both sides of the sliding assembly. A load-bearing assembly is fixedly mounted on the two extension assemblies, and a first winding assembly, a second winding assembly, and a third winding assembly are respectively fixedly mounted on the load-bearing assembly. The first winding assembly, the second winding assembly, and the third winding assembly are concentrically aligned. A steel wire rope is wound around the first winding assembly, the free end of which is fixedly connected to a hook. A steam turbine is placed below the hook. Positioning components are fixedly installed on the second and third winding components, and the first, second, and third winding components can be engaged with the positioning components. A push-pull component is fixedly installed on the load-bearing component, and the output end of the push-pull component is installed through the first, second, and third winding components. A drive component is fixedly installed inside the sliding component, and a connecting component is slidably installed inside the output shaft of the drive component. The output end of the push-pull component is rotatably connected to the connecting component. A first adjusting component is installed on the bottom surface of the load-bearing component, a second adjusting component is fixedly installed on the bottom surface of the first adjusting component, and a third adjusting component is fixedly installed on the side wall of the second adjusting component.

[0008] Furthermore, the sliding assembly includes a slide and a plurality of rollers rotatably mounted on the inner side wall of the slide. The plurality of rollers are connected by a belt for transmission. The rollers are rolled on the gantry frame. A pair of drive motors are fixedly mounted on the outer side walls on both sides of the slide. The output shaft of the drive motor is rotatably mounted through the side wall of the slide, and the output shaft of the drive motor is fixedly connected to the rollers.

[0009] The extension assembly includes a T-shaped mounting plate fixedly installed on the outer wall of one side of the carriage. Two first electric telescopic columns are fixedly installed on the two side walls of the T-shaped mounting plate, and the two first electric telescopic columns are arranged symmetrically.

[0010] Furthermore, the load-bearing component includes a load-bearing plate, which is fixedly connected to the side wall of the extended section of the first electric telescopic column by an L-shaped bracket. Three first pulley groups are fixedly installed on the side wall at the notch of the load-bearing plate, and the wire ropes on the first winding assembly, the second winding assembly and the third winding assembly pass through the corresponding first pulley groups respectively.

[0011] The load-bearing plate includes a plate body, and a slide rail is provided on the bottom surface of the plate body. The first adjustment component is disposed inside the slide rail.

[0012] Furthermore, the first winding assembly includes a pair of support frames fixedly installed on the top surface of the plate, and a winding roller is rotatably installed on the two support frames. A steel wire rope is wound on the winding roller. Several helical teeth are fixedly installed on the circumferential sidewalls at both ends of the winding roller. The helical teeth can be engaged with the positioning assembly. A pair of slots are opened inside the winding roller. The slots can be engaged with the connecting assembly. The composition structure and connection method of the first winding assembly, the second winding assembly and the third winding assembly are the same.

[0013] Furthermore, the push-pull assembly includes a fixed frame fixedly installed on the side wall of the load-bearing plate, an electric actuator fixedly installed on the inner side wall of the fixed frame, and the output end of the electric actuator is sequentially disposed through the third winding assembly, the second winding assembly and the first winding assembly, and the output end of the electric actuator is rotatably connected to the connecting assembly.

[0014] Furthermore, the drive assembly includes a dual-axis motor fixedly installed inside the carriage, with the two output shafts of the dual-axis motor respectively rotatably mounted through the side wall of the carriage, and a protective plate fixedly installed at the edge of the bottom opening of the carriage.

[0015] Furthermore, the output shaft of the dual-axis motor is provided with a pair of sliding grooves and a pair of clearance grooves.

[0016] Furthermore, the connecting assembly includes a connecting shaft, on which a pair of limiting strips are symmetrically fixedly installed. The connecting shaft is slidably disposed inside the output shaft of the dual-axis motor, and the limiting strips are slidably installed in the inner cavity of the slide groove. A pair of mounting cavities are opened inside the end of the connecting shaft away from the dual-axis motor. A locking plate is slidably installed inside the mounting cavity. The locking plate and the mounting cavity are elastically connected by a first spring, and the locking plate and the locking groove can form a locking relationship. A first permanent magnet is fixedly installed on the inner side wall of the locking plate, and a first electromagnet is fixedly installed on the inner side wall of the mounting cavity. The first electromagnet and the first permanent magnet are aligned.

[0017] Furthermore, the first adjustment component includes a second electric telescopic column that is horizontally fixedly installed in the inner cavity of the slide rail, a first slide block that is slidably installed in the inner cavity of the slide rail, and the output end of the second electric telescopic column is fixedly connected to the side wall of the first slide block.

[0018] The second adjustment component includes a third electric telescopic column that is vertically fixedly installed on the bottom surface of the first slide block. A second pulley group is fixedly installed on the inner side wall of the output end of the third electric telescopic column. A steel wire rope passes through the second pulley group. A vertical mounting plate is fixedly installed on the outer side wall of the output end of the third electric telescopic column. A slide rail is provided on the inner side wall of the vertical mounting plate.

[0019] The third adjustment component includes a fourth electric telescopic column that is vertically fixed on a slide rail. A second slide block is also slidably installed on the slide rail. The output end of the fourth electric telescopic column is fixedly connected to the side wall of the second slide block. A fifth electric telescopic column is horizontally fixed on the second slide block. A third pulley group is fixedly installed at the output end of the fifth electric telescopic column. A steel wire rope passes through the third pulley group.

[0020] Furthermore, the positioning component includes a base fixedly installed on the inner wall of the support frame. The base has an installation groove. An arc-shaped locking block is slidably installed in the inner cavity of the installation groove. The bottom surface of the arc-shaped locking block and the bottom surface of the inner cavity of the installation groove are elastically connected by a second spring. A second permanent magnet is fixedly installed on the bottom surface of the arc-shaped locking block. A second electromagnet is fixedly installed on the bottom surface of the inner cavity of the installation groove, and the second permanent magnet and the second electromagnet are aligned.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In this invention, by using a dual-axis motor in conjunction with the push-pull assembly and the connecting assembly, the first winding assembly, the second winding assembly, and the third winding assembly can be driven to wind the wire rope, thereby achieving the effect of hoisting multiple parts of the steam turbine at once. This achieves the effect of multi-purpose use of one machine, reduces the capital investment of the equipment, and also reduces the maintenance cost of the hoisting device in this invention.

[0023] 2. The invention enables the simultaneous lifting of multiple objects on the same lifting equipment, eliminating the need for multiple lifting devices to work together. This not only increases the degree of automation but also reduces the number of personnel required, saving manpower. Furthermore, it improves lifting efficiency, thereby increasing the efficiency of turbine maintenance.

[0024] 3. By setting the positioning components, the hoisting height of the first, second, and third winding components can be positioned respectively. Multiple components of the steam turbine can be hoisted at different heights in an alternating manner. Using the hoisting method of this invention, multiple components of the steam turbine can be hoisted at once while ensuring that the distance between the components is not too far. This is more conducive to subsequent assembly without affecting maintenance, reduces the installation time of each component, and facilitates comparison between the components. This not only makes maintenance observation easier but also improves maintenance efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention in its initial state;

[0026] Figure 2 This is a schematic diagram showing the installation position of the drive component of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point A;

[0028] Figure 4 for Figure 2 Enlarged view of point B;

[0029] Figure 5 This is a schematic diagram showing the installation positions of the first winding assembly, the second winding assembly, and the third winding assembly of the present invention.

[0030] Figure 6 for Figure 5 Enlarged view of point C;

[0031] Figure 7 This is a cross-sectional schematic diagram of the first winding assembly, the second winding assembly, the third winding assembly, the push-pull assembly, the drive assembly, and the connecting assembly of the present invention;

[0032] Figure 8 for Figure 7 Enlarged view of point D;

[0033] Figure 9 This is a disassembly diagram of the dual-axis motor and connecting assembly of the present invention;

[0034] Figure 10 for Figure 9 Enlarged view of point E;

[0035] Figure 11 for Figure 9 Enlarged view at point F;

[0036] Figure 12 This is a schematic diagram showing the installation position of the positioning component of the present invention;

[0037] Figure 13 for Figure 12 Enlarged view of point G.

[0038] In the diagram: 1. Gantry frame; 2. Transfer mechanism; 3. Sliding assembly; 31. Carriage; 32. Roller; 33. Drive motor; 4. Extension assembly; 41. T-shaped mounting plate; 42. First electric telescopic column; 5. Load-bearing assembly; 51. Load-bearing plate; 511. Plate body; 512. Slide rail; 52. L-shaped bracket; 53. First pulley block; 6. First winding assembly; 61. Support frame; 62. Winding roller; 63. Helical tooth block; 64. Slot; 7. Second winding assembly; 8. Third winding assembly; 9. Push-pull assembly; 91. Fixing frame; 92. Electric push rod; 10. Drive assembly; 101. Dual-axis motor; 1011. Slide rail; 1012. Clearance groove; 102. Guard plate; 20. Connecting assembly; 201. Connecting shaft; 202. Limiting strip; 2 03. Mounting cavity; 204. Clamping plate; 205. First spring; 206. First permanent magnet; 207. First electromagnet; 30. First adjusting assembly; 301. Second electric telescopic column; 302. First slide block; 40. Second adjusting assembly; 401. Third electric telescopic column; 402. Second pulley block; 403. Vertical mounting plate; 404. Slide rail; 50. Third adjusting assembly; 501. Fourth electric telescopic column; 502. Second slide block; 503. Fifth electric telescopic column; 504. Third pulley block; 60. Wire rope; 70. Hook; 80. Steam turbine; 90. Positioning assembly; 901. Base; 902. Mounting groove; 903. Arc-shaped clamping block; 904. Second spring; 905. Second permanent magnet; 906. Second electromagnet. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments.

[0040] To address the issue that the turbine hoisting equipment can only lift one turbine component at a time, and that simultaneously lifting multiple turbine components requires multiple hoisting devices working together, as well as a large number of personnel and relatively cumbersome operations, the following measures are needed. Figure 1 - Figure 12 As shown:

[0041] A turbine overhaul and hoisting device includes a gantry frame 1. The gantry frame 1 supports and secures numerous components. Moving mechanisms 2 are respectively installed at the lower ends of the gantry frame 1, enabling the entire turbine overhaul and hoisting device to move. Sliding components 3 are slidably mounted on the gantry frame 1, used to adjust the position of the hoisting mechanism of the turbine overhaul and hoisting device, ensuring the hoisting mechanism is in a suitable position for smooth hoisting operations. Two fixed components are respectively installed on the outer walls of the two sides of the sliding components 3. The extension assembly 4 has a load-bearing assembly 5 fixedly mounted on each of the two extension assemblies 4. The load-bearing assembly 5 is respectively fixedly mounted with a first winding assembly 6, a second winding assembly 7, and a third winding assembly 8. The first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 are concentrically aligned. The extension assembly 4 is used to adjust the position of the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 at both ends of the sliding assembly 3, so that the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 at both ends of the sliding assembly 3 can adapt to the length of the item to be hoisted.

[0042] Steel wire ropes 60 are wound around the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8, respectively. A hook 70 is fixedly connected to the free end of each steel wire rope 60. A steam turbine 80 is placed below the hook 70. During maintenance of the steam turbine 80, when it needs to be lifted, the operator first hooks the hook 70 at the free end of the steel wire rope 60 on the first winding assembly 6 onto the upper cylinder cover of the steam turbine 80. Then, the first winding assembly 6 winds up the steel wire rope 60, thus lifting the upper cylinder cover of the steam turbine 80. Positioning components 90 are also fixedly installed on the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8. Component 6, the second winding component 7, and the third winding component 8 can be engaged with the positioning component 90. When the first winding component 6, the second winding component 7, or the third winding component 8 hoists different parts of the steam turbine 80, the positioning component 90 can position the first winding component 6, the second winding component 7, or the third winding component 8 to prevent them from rotating in the opposite direction under the gravity of the steam turbine 80 components. While hoisting multiple parts of the steam turbine 80, it can also prevent the steam turbine 80 components from falling to the ground and causing damage.

[0043] A push-pull assembly 9 is also fixedly installed on the load-bearing assembly 5. The output end of the push-pull assembly 9 is installed through the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8. A drive assembly 10 is fixedly installed inside the sliding assembly 3. The drive assembly 10 is used to drive the first winding assembly 6, the second winding assembly 7, or the third winding assembly 8 to rotate, thereby winding the corresponding wire rope 60 and achieving the purpose of hoisting multiple components of the steam turbine 80. A connecting assembly 20 is slidably installed inside the output shaft of the drive assembly 10. The output end of the push-pull assembly 9 is rotatably connected to the connecting assembly 20.

[0044] When the cylinder head of turbine 80 needs to be hoisted, the push-pull assembly 9 is activated to pull the connecting assembly 20 outward from the inside of the output shaft of the drive assembly 10. Since the first winding assembly 6 has a sensor inside, when the push-pull assembly 9 moves the connecting assembly 20 into the first winding assembly 6, the sensor can detect the position of the connecting assembly 20. When the connecting assembly 20 moves to the appropriate position, the push-pull assembly 9 stops operating. At this time, the connecting assembly 20 and the first winding assembly 6 form a locking relationship. Then... The drive assembly 10 is activated, and its output shaft drives the first winding assembly 6 to rotate synchronously via the connecting assembly 20. This winds up the wire rope 60 on the first winding assembly 6, thereby enabling the hoisting of the upper cylinder head of the turbine 80. When the upper cylinder head of the turbine 80 is hoisted to a suitable height, the drive assembly 10 stops operating. Simultaneously, the positioning assembly 90 engages with the first winding assembly 6 to fix the hoisting height of the upper cylinder head of the turbine 80, facilitating subsequent handling of the internal components of the turbine 80. Lifting: After the cylinder head of the turbine 80 is lifted, the connecting assembly 20 is activated again to release the locking relationship between the connecting assembly 20 and the first winding assembly 6. Then, the push-pull assembly 9 is activated to move the connecting assembly 20 sequentially into the second winding assembly 7 and the third winding assembly 8. Since the second winding assembly 7 and the third winding assembly 8 are also equipped with sensors, the above steps can be repeated to lift other components of the turbine 80 using the second winding assembly 7 and the third winding assembly 8. A first adjusting component 30 is provided on the bottom surface of component 5, a second adjusting component 40 is fixedly provided on the bottom surface of the first adjusting component 30, and a third adjusting component 50 is fixedly provided on the side wall of the second adjusting component 40. The first adjusting component 30, the second adjusting component 40 and the third adjusting component 50 are used to change the path of the wire rope 60 on the second winding component 7 and the third winding component 8 to prevent the wire rope 60 from interfering with the components of the turbine 80 during the hoisting process, which would affect the normal hoisting operation.

[0045] The sliding assembly 3 includes a slide 31 and several rollers 32 rotatably mounted on the inner wall of the slide 31. The rollers 32 are connected by a belt for transmission. The rollers 32 are rolled on the gantry frame 1. A pair of drive motors 33 are fixedly mounted on the outer walls on both sides of the slide 31. The output shaft of the drive motor 33 is rotatably mounted through the side wall of the slide 31 and is fixedly connected to the rollers 32. The drive motor 33 provides power output and drives the rollers 32 to move on the gantry frame 1, thereby enabling the sliding assembly 3 to drive the hoisting mechanism of the turbine maintenance hoisting equipment to adjust its position.

[0046] The extension assembly 4 includes a T-shaped mounting plate 41 fixedly installed on one side of the outer wall of the carriage 31. First electric telescopic columns 42 are fixedly installed on the two side walls of the T-shaped mounting plate 41 respectively, and the two first electric telescopic columns 42 are arranged symmetrically.

[0047] The load-bearing component 5 includes a load-bearing plate 51, which is used to support and fix the components. The load-bearing plate 51 is fixedly connected to the side wall of the extended section of the first electric telescopic column 42 through an L-shaped bracket 52. Three first pulley groups 53 are fixedly installed on the side wall at the notch of the load-bearing plate 51. The wire ropes 60 on the first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 pass through the corresponding first pulley groups 53. The main function of the first pulley groups 53 is to limit the wire ropes 60, which can reduce the shaking of the turbine 80 components during the hoisting process.

[0048] The load-bearing plate 51 includes a plate body 511, and a slide rail 512 is provided on the bottom surface of the plate body 511. The first adjustment component 30 is disposed inside the slide rail 512.

[0049] The first winding assembly 6 includes a pair of support frames 61 fixedly installed on the top surface of the plate 511. A winding roller 62 is rotatably mounted on the two support frames 61. A steel wire rope 60 is wound on the winding roller 62. Several helical tooth blocks 63 are fixedly installed on the circumferential sidewalls at both ends of the winding roller 62. The helical tooth blocks 63 can be engaged with the positioning assembly 90. A pair of slots 64 are opened inside the winding roller 62. The slots 64 can be engaged with the connecting assembly 20. The composition structure and connection method of the first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 are the same.

[0050] When the upper cylinder head of the steam turbine 80 is hoisted, the push-pull assembly 9 moves the connecting assembly 20 into the inside of the take-up roller 62. When the sensor inside the take-up roller 62 detects that the connecting assembly 20 has moved to the designated position, the push-pull assembly 9 stops operating, and the connecting assembly 20 forms a locking relationship with the slot 64. The drive assembly 10 is then activated, and the drive assembly 10 drives the take-up roller 62 to rotate on the support frame 61 and wind up the wire rope 60 through the connecting assembly 20, thereby realizing the hoisting of the upper cylinder head of the steam turbine 80. During the process of the take-up roller 62 winding up the wire rope 60, the positioning assembly 90 will not lock into the helical tooth block 63. When the cylinder head of the turbine 80 is hoisted to the appropriate height, the connecting component 20 and the slot 64 are released from their restrictive relationship. The connecting component 20 is then moved to the second winding component 7 or the third winding component 8 by the push-pull component 9 to hoist other components of the turbine 80. When the drive component 10 stops operating, the positioning component 90 and the helical tooth block 63 are engaged. At this time, even if the connecting component 20 and the slot 64 are released from their restrictive relationship, the winding roller 62 will not rotate in the opposite direction on the support frame 61, so that the wire rope 60 on the winding roller 62 will not be loosened, and the hoisting height of the cylinder head of the turbine 80 can always be maintained.

[0051] The push-pull assembly 9 includes a fixed frame 91 fixedly installed on the side wall of the load-bearing plate 51. An electric push rod 92 is fixedly installed on the inner side wall of the fixed frame 91. The output end of the electric push rod 92 is sequentially installed through the third winding assembly 8, the second winding assembly 7 and the first winding assembly 6, and the output end of the electric push rod 92 is rotatably connected to the connecting assembly 20.

[0052] The drive assembly 10 includes a dual-axis motor 101 fixedly installed inside the carriage 31. The two output shafts of the dual-axis motor 101 are respectively rotatably mounted on the side wall of the carriage 31. The dual-axis motor 101 is used to provide power output during the hoisting process. A guard plate 102 is fixedly installed at the edge of the bottom opening of the carriage 31 to protect the dual-axis motor 101.

[0053] The output shaft of the dual-axis motor 101 has a pair of sliding grooves 1011 and a pair of clearance grooves 1012 respectively.

[0054] The connecting assembly 20 includes a connecting shaft 201. A pair of limiting strips 202 are symmetrically fixedly installed on the circumferential sidewall of the connecting shaft 201. The connecting shaft 201 is slidably disposed inside the output shaft of the dual-axis motor 101, and the limiting strips 202 are slidably installed in the inner cavity of the slide groove 1011. A pair of mounting cavities 203 are opened inside the end of the connecting shaft 201 away from the dual-axis motor 101. A retaining plate 204 is slidably installed inside the mounting cavity 203. The retaining plate 204 and the mounting cavity 203 are elastically connected by a first spring 205, and the retaining plate 204 and the retaining groove 64 can form a snap-fit ​​relationship. A first permanent magnet 206 is fixedly installed on the inner sidewall of the retaining plate 204, and a first electromagnet 207 is fixedly installed on the inner sidewall of the mounting cavity 203. The first electromagnet 207 and the first permanent magnet 206 are aligned.

[0055] The first adjustment component 30 includes a second electric telescopic column 301 that is horizontally fixedly installed in the inner cavity of the slide rail 512. A first slide block 302 is slidably installed in the inner cavity of the slide rail 512, and the output end of the second electric telescopic column 301 is fixedly connected to the side wall of the first slide block 302.

[0056] The second adjustment component 40 includes a third electric telescopic column 401 that is vertically fixedly installed on the bottom surface of the first slide block 302. A second pulley group 402 is fixedly installed on the inner side wall of the output end of the third electric telescopic column 401. A steel wire rope 60 passes through the second pulley group 402. A vertical mounting plate 403 is fixedly installed on the outer side wall of the output end of the third electric telescopic column 401. A slide rail 404 is provided on the inner side wall of the vertical mounting plate 403.

[0057] The third adjustment assembly 50 includes a fourth electric telescopic column 501 vertically fixedly installed on a slide rail 404. A second slide block 502 is also slidably installed on the slide rail 404. The output end of the fourth electric telescopic column 501 is fixedly connected to the side wall of the second slide block 502. A fifth electric telescopic column 503 is horizontally fixedly installed on the second slide block 502. A third pulley group 504 is fixedly installed at the output end of the fifth electric telescopic column 503. A steel wire rope 60 passes through the third pulley group 504.

[0058] Specifically, when the steam turbine 80 is being overhauled and needs to be hoisted, the two pairs of first electric telescopic columns 42 are first activated to extend in opposite directions until a suitable hoisting position is reached. At this point, the first electric telescopic columns 42 stop extending. In the initial state, under the elastic force of the first spring 205, the clamping plate 204 protrudes from the surface of the connecting shaft 201. Because of the clearance groove 1012, when the connecting assembly 20 is inside the output shaft of the dual-shaft motor 101, the first spring 205 remains in its natural state and is not compressed, preventing damage when the maintenance hoisting equipment is not in use for extended periods. The first spring 205 is continuously compressed, leading to fatigue and shortening its service life. When the first electromagnet 207 is energized, an attraction is generated between the first permanent magnet 206 and the first electromagnet 207, causing the clamping plate 204 to retract into the mounting cavity 203. At this time, the electric push rod 92 is activated, driving the connecting shaft 201 to be pulled outward from inside the output shaft of the dual-axis motor 101 until the electric push rod 92 moves the connecting shaft 201 into the inside of the take-up roller 62. When the sensor inside the take-up roller 62 detects that the connecting shaft 201 has reached the designated position, the electric push rod 92 stops. Stop the operation and de-energize the first electromagnet 207. Under the elastic force of the first spring 205, the clamping plate 204 is ejected to the outside of the mounting cavity 203 and clamped inside the clamping groove 64. At this time, the worker hangs the hook 70 of the free end of the wire rope 60 on the take-up roller 62 on the upper cylinder cover of the turbine 80 and starts the dual-shaft motor 101. Because there is a limiting relationship between the limiting clamping strip 202 and the slide groove 1011, the dual-shaft motor 101 can drive the connecting shaft 201 to rotate through the limiting clamping strip 202 when it rotates. Also, because there is a limiting relationship between the clamping plate 204 and the clamping groove 64, when... When the connecting shaft 201 rotates, it can drive the winding roller 62 to wind up the wire rope 60 through the clamping plate 204, thereby achieving the effect of hoisting the upper cylinder head of the turbine 80. When the upper cylinder head of the turbine 80 is hoisted to a suitable height, the dual-shaft motor 101 stops running. Since the positioning component 90 and the helical tooth block 63 form a clamping relationship, the positioning component 90 can position the hoisting height of the upper cylinder head of the turbine 80. Even when the clamping plate 204 is pulled out from the clamping slot 64, the winding roller 62 will not rotate in the opposite direction, thus preventing the hoisting height of the upper cylinder head of the turbine 80 from decreasing or falling to the ground.

[0059] Furthermore, after the upper cylinder head of the turbine 80 is hoisted, the controller on the dual-shaft motor 101 records the rotor rotation angle as angle value one. Then, the first electromagnet 207 is energized, and an attraction is generated between the first permanent magnet 206 and the first electromagnet 207, causing the clamping plate 204 to retract into the mounting cavity 203, thereby allowing the clamping plate 204 to be pulled out from the slot 64, releasing the restriction relationship between the clamping plate 204 and the slot 64. The electric push rod 92 is activated again to drive the connecting shaft 201 towards the interior of the second winding assembly 7. When the sensor inside the second winding assembly 7 senses that the connecting shaft 201 has reached the designated position, the first electromagnet 207 is de-energized, causing the clamping plate 204 to extend out of the mounting cavity 203 and form a clamping relationship with the second winding assembly 7. Then, the second electric telescopic column 301 is activated, and the second electric telescopic column 301 drives the first slide block 302 towards the interior of the slide rail 512. Sliding away from the turbine 80, when the first sliding block 302 slides to the appropriate position, the second electric telescopic column 301 stops operating, and the third electric telescopic column 401 starts operating, driving the third adjusting component 50 to move downward as a whole. When the third adjusting component 50 moves to the appropriate position, the third electric telescopic column 401 stops operating. Then, the fourth electric telescopic column 501 is used to fine-tune the positions of the second sliding block 502 and the fifth electric telescopic column 503. When the fifth electric telescopic column 503 reaches the appropriate position, the fifth electric telescopic column 503 extends and moves the hook 70 at the free end of the wire rope 60 toward the direction closer to the turbine 80 through the third pulley group 504. The operator then hooks the hook 70 onto other parts of the turbine 80, and then starts the dual-shaft motor 101. The dual-shaft motor 101 drives the second winding component 7 to wind up the wire rope 60 through the connecting component 20, thereby lifting other parts of the turbine 80.

[0060] The first adjusting assembly 30, the second adjusting assembly 40, and the third adjusting assembly 50 are designed to change the path of the wire rope 60, preventing interference between the upper cylinder head of the turbine 80 and the wire rope 60 on the second winding assembly 7 and the third winding assembly 8 after the upper cylinder head of the turbine 80 is hoisted, thus affecting the subsequent hoisting of other components of the turbine 80. After the second winding assembly 7 is used, the controller on the dual-shaft motor 101 records the rotor rotation angle as angle value two. Then, the clamping plate 204 is clamped to the third winding assembly 8 in the same way, and the dual-shaft motor 101 drives the third winding assembly 8 to rotate and wind up the wire rope 60, thereby realizing the hoisting operation of other components of the turbine 80. After the third winding assembly 8 is used, the controller on the dual-shaft motor 101 records the rotor rotation angle as angle value three.

[0061] When it is necessary to rotate the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 again, the controller on the dual-axis motor 101 will, according to the aforementioned angle values ​​one, two, and three, pre-rotate the output shaft and the connecting assembly 20 to the corresponding angle via the rotor. Then, the connecting assembly 20 is moved to the first winding assembly 6, the second winding assembly 7, or the third winding assembly 8 via the electric push rod 92 for engagement. For example, when it is necessary to rotate the first winding assembly 6 again, the controller on the dual-axis motor 101 first controls the rotor to rotate to the same angle as angle value one. At this time, the clamping plate 204 on the connecting assembly 20 is aligned with the clamping slot 64. After the first electromagnet 207 is de-energized, the clamping plate 204 immediately pops out and inserts into the slot 64 to establish a clamping relationship, which is used to connect the power. Each time the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 rotate once, the corresponding angle values ​​one, two, and three are updated. With this setting, when the first winding assembly 6 is winding, the clamping plate 204 and slot 64 can always be kept aligned, and there will be no situation where the clamping plate 204 and slot 64 are misaligned and power transmission cannot be carried out. For the second winding assembly 7 and the third winding assembly 8, power transmission can also be guaranteed, which is conducive to the smooth progress of the hoisting operation.

[0062] Existing turbine 80 hoisting equipment can only hoist one component of the turbine 80 at a time. If multiple components of the turbine 80 need to be hoisted simultaneously, not only are multiple hoisting devices required, but also a large number of personnel are needed to assist in the operation. This setup is not only labor-intensive, but also relatively cumbersome. However, the hoisting equipment in this invention, after hoisting the upper cylinder head of the turbine 80 through the first winding assembly 6, can also hoist other components of the turbine 80 through the second winding assembly 7 and the third winding assembly 8. The hoisting of multiple objects at once in this invention is achieved on the same hoisting equipment, eliminating the need for multiple hoisting devices to work together. This not only has a high degree of automation, but also reduces the number of personnel required, saving manpower. In addition, it improves hoisting efficiency, thereby improving the maintenance efficiency of the turbine 80.

[0063] Moreover, in this invention, by using a dual-axis motor 101 in conjunction with the push-pull assembly 9 and the connecting assembly 20, the first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 can be driven to wind the wire rope 60, thereby achieving the effect of hoisting more than 80 parts of the steam turbine at one time. This achieves the effect of multi-purpose machine, reduces the capital investment of equipment, and also reduces the maintenance cost of the hoisting device in this invention.

[0064] To address the issue that when the dual-axis motor 101 drives the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 respectively via the connecting assembly 20 for hoisting, the first winding assembly 6, the second winding assembly 7, and the third winding assembly 8 cannot be positioned unidirectionally, such as... Figure 7 - Figure 8 and Figure 12 - Figure 13 As shown:

[0065] The positioning component 90 includes a base 901 fixedly installed on the inner wall of the support frame 61. The base 901 has a mounting groove 902. An arc-shaped locking block 903 is slidably installed in the inner cavity of the mounting groove 902. The bottom surface of the arc-shaped locking block 903 and the bottom surface of the inner cavity of the mounting groove 902 are elastically connected by a second spring 904. A second permanent magnet 905 is fixedly installed on the bottom surface of the arc-shaped locking block 903. A second electromagnet 906 is fixedly installed on the bottom surface of the inner cavity of the mounting groove 902, and the second permanent magnet 905 and the second electromagnet 906 are aligned.

[0066] Specifically, when the take-up roller 62 winds up the wire rope 60, the inclined surface of the helical tooth block 63 on the take-up roller 62 applies pressure to the arc-shaped surface of the arc-shaped locking block 903, causing the arc-shaped locking block 903 to retract into the mounting groove 902 and compress the second spring 904. When the take-up roller 62 stops rotating, the arc-shaped locking block 903 is located in the gap between the two helical tooth blocks 63. Under the elastic force of the second spring 904, the arc-shaped locking block 903 pops outward. At this time, the take-up roller 62 has a tendency to rotate in the opposite direction, and the vertical surface of the helical tooth block 63 abuts against the vertical surface of the arc-shaped locking block 903, thereby achieving... The current locking effect prevents the take-up roller 62 from rotating in the opposite direction, thus positioning the take-up roller 62. When it is necessary to rotate the take-up roller 62 in the opposite direction again, the second electromagnet 906 is energized, causing an attraction between the second electromagnet 906 and the second permanent magnet 905, which draws the arc-shaped locking block 903 into the mounting groove 902. This causes the vertical surface of the arc-shaped locking block 903 to disengage from the vertical surface of the helical tooth block 63, losing its contact effect. At this time, the take-up roller 62 can be driven to rotate in the opposite direction. The connection relationship between the second take-up assembly 7 and the third take-up assembly 8 and the positioning assembly 90 is consistent with the above relationship.

[0067] By setting the positioning component 90, the hoisting height of the first winding component 6, the second winding component 7, and the third winding component 8 can be positioned respectively. Multiple components of the steam turbine 80 can be hoisted at different heights in an alternating manner. Moreover, by adopting this hoisting method, while hoisting multiple components of the steam turbine 80 at one time, the distance between the components of the steam turbine 80 is not too far. Without affecting maintenance, it is more conducive to subsequent assembly, which can reduce the installation time of each component of the steam turbine 80. It is also conducive to the comparison between the components, which not only facilitates maintenance observation, but also improves maintenance efficiency.

[0068] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0069] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A turbine overhaul hoisting device, comprising a gantry frame, with a transfer mechanism respectively provided on the lower parts of both ends of the gantry frame, and a sliding assembly slidably mounted on the gantry frame, characterized in that: Extension components are fixedly installed on both outer walls of the sliding assembly. Load-bearing components are fixedly installed on the two extension components. A first winding component, a second winding component, and a third winding component are fixedly installed on the load-bearing components, respectively. The first, second, and third winding components are concentrically aligned. Steel wire ropes are wound around the first, second, and third winding components, and hooks are fixedly connected to the free ends of the steel wire ropes. A steam turbine is placed below the hooks. Positioning components are also fixedly installed on the first, second, and third winding components. The second and third winding components can be engaged with the positioning component. A push-pull component is also fixedly installed on the load-bearing component. The output end of the push-pull component is installed through the first, second, and third winding components. A drive component is fixedly installed inside the sliding component. A connecting component is slidably installed inside the output shaft of the drive component. The output end of the push-pull component is rotatably connected to the connecting component. A first adjustment component is installed on the bottom surface of the load-bearing component. A second adjustment component is fixedly installed on the bottom surface of the first adjustment component. A third adjustment component is fixedly installed on the side wall of the second adjustment component. The load-bearing component includes a load-bearing plate, the load-bearing plate includes a plate body, a slide rail is provided on the bottom surface of the plate body, and a first adjustment component is disposed inside the slide rail; The first winding assembly includes a pair of support frames fixedly installed on the top surface of the plate. A winding roller is rotatably installed on the two support frames. A steel wire rope is wound on the winding roller. Several helical teeth are fixedly installed on the circumferential sidewalls at both ends of the winding roller. The helical teeth can be engaged with the positioning assembly. A pair of slots are opened inside the winding roller. The slots can be engaged with the connecting assembly. The composition structure and connection method of the first winding assembly, the second winding assembly and the third winding assembly are the same. The first adjustment component includes a second electric telescopic column that is horizontally fixedly installed in the inner cavity of the slide rail, a first slide block that is slidably installed in the inner cavity of the slide rail, and the output end of the second electric telescopic column is fixedly connected to the side wall of the first slide block. The second adjustment component includes a third electric telescopic column that is vertically fixedly installed on the bottom surface of the first slide block. A second pulley group is fixedly installed on the inner side wall of the output end of the third electric telescopic column. A steel wire rope passes through the second pulley group. A vertical mounting plate is fixedly installed on the outer side wall of the output end of the third electric telescopic column. A slide rail is provided on the inner side wall of the vertical mounting plate. The third adjustment component includes a fourth electric telescopic column that is vertically fixed on a slide rail. A second slide block is also slidably installed on the slide rail. The output end of the fourth electric telescopic column is fixedly connected to the side wall of the second slide block. A fifth electric telescopic column is horizontally fixed on the second slide block. A third pulley group is fixedly installed at the output end of the fifth electric telescopic column. A steel wire rope passes through the third pulley group.

2. The turbine overhaul and hoisting equipment according to claim 1, characterized in that, The sliding assembly includes a slide and several rollers rotatably mounted on the inner side wall of the slide. The rollers are connected by a belt for transmission. The rollers are rolled on the gantry frame. A pair of drive motors are fixedly mounted on the outer side walls on both sides of the slide. The output shaft of the drive motor is rotatably mounted through the side wall of the slide and is fixedly connected to the rollers. The extension assembly includes a T-shaped mounting plate fixedly installed on the outer wall of one side of the carriage. Two first electric telescopic columns are fixedly installed on the two side walls of the T-shaped mounting plate, and the two first electric telescopic columns are arranged symmetrically.

3. The turbine overhaul and hoisting equipment according to claim 2, characterized in that, The load-bearing plate is fixedly connected to the side wall of the extended section of the first electric telescopic column by an L-shaped bracket. Three first pulley groups are fixedly installed on the side wall at the notch of the load-bearing plate. The wire ropes on the first winding assembly, the second winding assembly and the third winding assembly pass through the corresponding first pulley groups.

4. The turbine overhaul and hoisting equipment according to claim 1, characterized in that, The push-pull assembly includes a fixed frame that is fixedly installed on the side wall of the load-bearing plate. An electric actuator is fixedly installed on the inner side wall of the fixed frame. The output end of the electric actuator is sequentially installed through the third winding assembly, the second winding assembly, and the first winding assembly. The output end of the electric actuator is rotatably connected to the connecting assembly.

5. The turbine overhaul and hoisting equipment according to claim 3, characterized in that, The drive assembly includes a dual-axis motor fixedly installed inside the carriage. The two output shafts of the dual-axis motor are respectively rotatably mounted on the side wall of the carriage. A protective plate is fixedly installed at the edge of the bottom opening of the carriage.

6. The turbine overhaul and hoisting equipment according to claim 5, characterized in that, The output shaft of the dual-axis motor has a pair of sliding grooves and a pair of clearance grooves respectively.

7. The turbine overhaul and hoisting equipment according to claim 6, characterized in that, The connecting assembly includes a connecting shaft. A pair of limiting strips are symmetrically fixedly installed on the circumferential sidewall of the connecting shaft. The connecting shaft is slidably disposed inside the output shaft of the dual-axis motor, and the limiting strips are slidably installed in the inner cavity of the slide groove. A pair of mounting cavities are opened inside the end of the connecting shaft away from the dual-axis motor. A locking plate is slidably installed inside the mounting cavity. The locking plate and the mounting cavity are elastically connected by a first spring, and the locking plate and the locking groove can form a locking relationship. A first permanent magnet is fixedly installed on the inner sidewall of the locking plate, and a first electromagnet is fixedly installed on the inner sidewall of the mounting cavity. The first electromagnet and the first permanent magnet are aligned.

8. The turbine overhaul and hoisting equipment according to claim 1, characterized in that, The positioning component includes a base fixedly installed on the inner wall of the support frame. The base has an installation groove. An arc-shaped locking block is slidably installed in the inner cavity of the installation groove. The bottom surface of the arc-shaped locking block and the bottom surface of the inner cavity of the installation groove are elastically connected by a second spring. A second permanent magnet is fixedly installed on the bottom surface of the arc-shaped locking block. A second electromagnet is fixedly installed on the bottom surface of the inner cavity of the installation groove, and the second permanent magnet and the second electromagnet are aligned.

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