Hoisting equipment for steam turbine overhaul

Abstract

The invention discloses steam turbine overhaul hoisting equipment, and belongs to the technical field of hoisting. The winding device comprises a portal frame, a sliding assembly is arranged on the portal frame in a sliding mode, stretching assemblies are fixedly arranged on the outer walls of the two sides of the sliding assembly correspondingly, bearing assemblies are fixedly arranged on the two stretching assemblies, and a first winding assembly, a second winding assembly and a third winding assembly are fixedly arranged on the bearing assemblies correspondingly; positioning assemblies are further fixedly arranged on the first winding assembly, the second winding assembly and the third winding assembly correspondingly, a push-pull assembly is further fixedly arranged on the bearing assembly, a driving assembly is fixedly arranged in the sliding assembly, and a connecting assembly is slidably arranged in an output shaft of the driving assembly in an embedded mode; according to the invention, a plurality of objects can be hoisted at one time on the same hoisting equipment, and a plurality of hoisting equipment does not need to be matched for use, so that not only is the automation degree high, but also the allocation quantity of workers is reduced, and the manpower is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of hoisting, and in particular relates to a steam turbine maintenance hoisting device. Background Art

[0002] A steam turbine is a device that converts the thermal energy of steam into mechanical energy and is a rotary power device. A steam turbine is mainly composed of a cylinder, a rotor and other components. It is mainly used in industrial fields, power generation fields and other fields. In order to maintain the long-term and stable operation of the steam turbine, the steam turbine needs to be regularly inspected and maintained. During the inspection and maintenance of the steam turbine, the steam turbine needs to be disassembled. Therefore, it is necessary to use professional lifting equipment to lift the steam turbine.

[0003] Chinese patent CN219950419U announces 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, and the adjustment unit and the lifting unit are both arranged on the hoisting device surface, the drive motor is fixedly installed on the left side of the outer surface of the protective shell, the rotating rod is fixedly connected to the right side of the drive motor surface, and the conveyor belt is engaged with the outer surface of the rotating rod on both sides. This prior art starts the hydraulic device after the two sides of the steam turbine correspond to the set docking interface, and under the action of the hydraulic telescopic rod, the positioning bearing is sleeved inside the docking interface, and the machine shafts on both sides of the steam turbine can be fixedly sleeved inside the docking interface. After the conveyor belt is running, it can drive the steam turbine to move up and down on the conveyor belt surface, thereby achieving the effect of hoisting the steam turbine, and the operation is convenient and simple.

[0004] Although the steam turbine hoisting equipment proposed in the above-mentioned prior art can realize the hoisting operation of the steam turbine, the steam turbine hoisting equipment announced in the above-mentioned prior art can only hoist one component of the steam turbine at a time. If multiple components of the steam turbine are to be hoisted at the same time, not only multiple hoisting equipment are required to be used in coordination, but also a large number of staff are required to assist in the operation of hoisting multiple components at the same time. Using this setting method, not only the workload is large, but also the operation is relatively cumbersome.

[0005] Therefore, we proposed a steam turbine maintenance hoisting equipment to solve the above-mentioned problems. Summary of the invention

[0006] In view of the problem that the turbine lifting equipment existing in the prior art can only lift one component of the turbine at a time, if multiple components of the turbine are to be lifted at the same time, multiple lifting equipment must be used in coordination, and a large number of staff must be deployed, and the operation is relatively cumbersome, the purpose of the present invention is to provide a turbine maintenance lifting equipment.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is as follows: a steam turbine maintenance hoisting equipment, including a gantry, the lower parts of the two ends of the gantry are respectively provided with moving mechanisms, a sliding assembly is slidably arranged on the gantry, extension assemblies are respectively fixedly arranged on the outer walls of both sides of the sliding assembly, a load-bearing assembly is fixedly arranged on the two extension assemblies, a first winding assembly, a second winding assembly and a third winding assembly are respectively fixedly arranged on the load-bearing assembly, and the first winding assembly, the second winding assembly and the third winding assembly are concentrically aligned, a steel wire rope is respectively wound around the first winding assembly, the free end of the steel wire rope is fixedly connected to a hook, a steam turbine is placed below the hook, and the first winding assembly , the second winding assembly and the third winding assembly are respectively fixedly provided with positioning assemblies, and the first winding assembly, the second winding assembly and the third winding assembly can form a snap-fit ​​relationship with the positioning assemblies respectively, a push-pull assembly is also fixedly provided on the load-bearing assembly, the output end of the push-pull assembly is penetrated and arranged on the first winding assembly, the second winding assembly and the third winding assembly, a driving assembly is fixedly provided inside the sliding assembly, a connecting assembly is slidably embedded inside the output shaft of the driving assembly, the output end of the push-pull assembly is rotatably connected with the connecting assembly, a first positioning assembly is provided on the bottom surface of the load-bearing assembly, a second positioning assembly is fixedly provided on the bottom surface of the first positioning assembly, and a third positioning assembly is fixedly provided on the side wall of the second positioning assembly.

[0008] Further, 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 to each other by a belt, the rollers are rotatably mounted on the gantry, a pair of driving motors are fixedly mounted on the outer side walls of both sides of the slide, the output shaft of the driving motor penetrates and is rotatably mounted on the side wall of the slide, and the output shaft of the driving motor is fixedly connected to the rollers; The extension assembly comprises a T-shaped mounting plate fixedly mounted on an outer wall of one side of the slide, and first electric telescopic columns are fixedly mounted on the side walls at both ends of the T-shaped mounting plate, respectively, and the two first electric telescopic columns are arranged in symmetrical positions.

[0009] Furthermore, the load-bearing assembly includes a load-bearing plate, which is fixedly connected to the side wall of the extension section of the first electric telescopic column through an L-shaped bracket, and three first pulley blocks are fixedly installed on the side wall at the notch of the load-bearing plate, and the steel wire ropes on the first winding assembly, the second winding assembly and the third winding assembly pass through the corresponding first pulley blocks respectively; The load-bearing plate comprises a plate body, a slideway is provided on the bottom surface of the plate body, and the first position adjustment component is arranged inside the slideway.

[0010] Furthermore, the first winding assembly includes a pair of support frames fixedly mounted on the top surface of the plate body, and winding rollers are mounted on the two support frames for rotation together, and a steel wire rope is wound around the winding rollers. A plurality of bevel gear blocks are fixedly mounted on the circumferential side walls at the edges of both ends of the winding rollers, and the bevel gear blocks and the positioning assembly can achieve a snap-fit ​​relationship. A pair of snap-fit ​​grooves are opened inside the winding rollers, and the snap-fit ​​grooves and the connecting assembly can form a snap-fit ​​relationship. The composition structure and connection method of the first winding assembly, the second winding assembly and the third winding assembly are all consistent.

[0011] Furthermore, the push-pull assembly includes a fixed frame fixedly mounted on the side wall of the load-bearing plate, an electric push rod fixedly mounted on the inner wall of the fixed frame, the output end of the electric push rod is sequentially arranged on the third winding assembly, the second winding assembly and the first winding assembly, and the output end of the electric push rod is rotatably connected to the connecting assembly.

[0012] Furthermore, the driving assembly includes a dual-axis motor fixedly mounted inside the slide, two output shafts of the dual-axis motor are respectively rotatably arranged on the side walls of the slide, and a guard plate is fixedly mounted on the edge of the bottom opening of the slide.

[0013] Furthermore, a pair of sliding grooves and a pair of giving way grooves are respectively provided inside the output shaft of the dual-axis motor.

[0014] Furthermore, the connection component includes a connecting shaft, a pair of limit strips are symmetrically fixedly installed on the circumferential side walls of the connecting shaft, the connecting shaft is slidably arranged inside the output shaft of the dual-axis motor, and the limit strips are slidably installed in the inner cavity of the slide groove, a pair of installation cavities are opened inside the end of the connecting shaft away from the dual-axis motor, a card plate is slidably installed inside the installation cavity, the card plate and the installation cavity are elastically connected by a first spring, and a card connection relationship can be formed between the card plate and the card groove, a first permanent magnet is fixedly installed on the inner side wall of the card plate, a first electromagnet is fixedly installed on the side wall inside the installation cavity, and the first electromagnet and the first permanent magnet are aligned.

[0015] Furthermore, the first position adjustment assembly comprises a second electric telescopic column horizontally fixedly installed in the inner cavity of the slideway, a first slide seat is slidably installed in the inner cavity of the slideway, and an output end of the second electric telescopic column is fixedly connected to a side wall of the first slide seat; The second positioning assembly includes a third electric telescopic column vertically fixedly mounted on the bottom surface of the first slide seat, a second pulley block is fixedly mounted on the inner side wall of the output end of the third electric telescopic column, the wire rope passes through the second pulley block, a vertical mounting plate is fixedly mounted on the outer side wall of the output end of the third electric telescopic column, and a slide rail is arranged on the inner side wall of the vertical mounting plate; The third positioning assembly includes a fourth electric telescopic column vertically fixedly mounted on the slide rail, a second slide seat is also slidably mounted on the slide rail, and an output end of the fourth electric telescopic column is fixedly connected to a side wall of the second slide seat, a fifth electric telescopic column is horizontally fixedly mounted on the second slide seat, a third pulley block is fixedly mounted on the output end of the fifth electric telescopic column, and a steel wire rope passes through the third pulley block.

[0016] Furthermore, the positioning assembly includes a base fixedly mounted on the inner side wall of the support frame, a mounting groove is provided on the base, an arc-shaped clamping block is slidably mounted in the inner cavity of the mounting groove, the bottom surface of the arc-shaped clamping block and the bottom surface of the inner cavity of the mounting groove are elastically connected by a second spring, a second permanent magnet is fixedly mounted on the bottom surface of the arc-shaped clamping block, a second electromagnet is fixedly mounted on the bottom surface of the inner cavity of the mounting groove, and the second permanent magnet and the second electromagnet are aligned.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, only a dual-axis motor, a push-pull assembly and a connecting assembly are required to respectively drive the first winding assembly, the second winding assembly and the third winding assembly to wind up the wire rope, thereby achieving the effect of lifting multiple components of the steam turbine at one time, realizing the effect of one machine for multiple uses, reducing the capital investment in the equipment, and also reducing the maintenance cost of the lifting device in the present invention.

[0018] 2. The lifting of multiple objects at one time in the present invention is achieved on the same lifting equipment, and there is no need to use multiple lifting equipment in coordination. It not only has a high degree of automation, but also reduces the number of staff and saves manpower. In addition, it also improves the lifting efficiency, thereby improving the turbine maintenance efficiency.

[0019] 3. By setting the positioning component, the hoisting heights of the first winding component, the second winding component and the third winding component can be positioned respectively, and multiple components of the steam turbine can be staggered and hoisted to different heights. By adopting the hoisting method of the present invention, multiple components of the steam turbine can be hoisted at one time, and the distance between the various components of the steam turbine will not be too far. It is more conducive to subsequent assembly without affecting maintenance, can reduce the installation time of various components of the steam turbine, and is also conducive to mutual comparison between various components, which is not only convenient for maintenance observation, but also conducive to improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention in the initial state; Figure 2 It is a schematic diagram of the installation position of the drive assembly of the present invention; Figure 3 for Figure 2 A magnified image of point A; Figure 4 for Figure 2 A magnified view of point B; Figure 5 It is a schematic diagram of the installation positions of the first winding assembly, the second winding assembly and the third winding assembly of the present invention; Figure 6 for Figure 5 Enlarged view of point C; Figure 7 It is a cross-sectional schematic diagram of the first winding assembly, the second winding assembly, the third winding assembly, the push-pull assembly, the driving assembly and the connecting assembly of the present invention; Figure 8 for Figure 7 The enlarged view of point D; Fig. 9 It is a disassembled schematic diagram of the dual-axis motor and the connection assembly of the present invention; Fig.10 for Fig. 9 The enlarged view of point E; Fig.11 for Fig. 9 The enlarged view of point F; Fig.12 It is a schematic diagram of the installation position of the positioning assembly of the present invention; Fig.13 for Fig.12 Enlarged view of point G.

[0021] In the figure: 1, gantry; 2, travel mechanism; 3, sliding assembly; 31, slide; 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, slideway; 52, L-shaped bracket; 53, first pulley block; 6, first winding assembly; 61, support frame; 62, winding roller; 63, oblique gear block; 64, slot; 7, second winding assembly; 8, third winding assembly; 9, push-pull assembly; 91, fixed frame; 92, electric push rod; 10, drive assembly; 101, dual-axis motor; 1011, slideway; 1012, clearance slot; 102, guard plate; 20, connection assembly; 201, connecting shaft; 202, limit card strip; 2 03, installation cavity; 204, clamping plate; 205, first spring; 206, first permanent magnet; 207, first electromagnet; 30, first positioning assembly; 301, second electric telescopic column; 302, first slide; 40, second positioning assembly; 401, third electric telescopic column; 402, second pulley block; 403, vertical installation plate; 404, slide rail; 50, third positioning assembly; 501, fourth electric telescopic column; 502, second slide; 503, fifth electric telescopic column; 504, third pulley block; 60, wire rope; 70, hook; 80, steam turbine; 90, positioning assembly; 901, base; 902, installation groove; 903, arc-shaped clamping block; 904, second spring; 905, second permanent magnet; 906, second electromagnet. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments.

[0023] To solve the problem that the steam turbine 80 lifting equipment can only lift one part of the steam turbine at a time, if multiple parts of the steam turbine are to be lifted at the same time, multiple lifting equipment must be used in coordination, and a large number of staff must be deployed, and the operation is relatively cumbersome. Figure 1 - Fig.12 As shown: A steam turbine maintenance hoisting device, comprising a gantry 1, the gantry 1 can support and fix many parts, the lower parts of both ends of the gantry 1 are respectively provided with a moving mechanism 2, the moving mechanism 2 can drive the entire steam turbine maintenance hoisting device to move, the gantry 1 is slidably provided with a sliding assembly 3, the sliding assembly 3 is used to adjust the position of the hoisting mechanism of the steam turbine maintenance hoisting device, ensure that the hoisting mechanism of the steam turbine maintenance hoisting device is in a suitable position, and facilitate the smooth progress of the hoisting operation, and the outer walls of both sides of the sliding assembly 3 are respectively fixedly provided with The extension components 4 are fixedly provided with load-bearing components 5, and the load-bearing components 5 are respectively fixedly provided with the first winding component 6, the second winding component 7 and the third winding component 8, and the first winding component 6, the second winding component 7 and the third winding component 8 are concentrically aligned. The extension components 4 are used to adjust the positions of the first winding component 6, the second winding component 7 and the third winding component 8 at both ends of the sliding component 3, so that the first winding component 6, the second winding component 7 and the third winding component 8 at both ends of the sliding component 3 can adapt to the length of the items to be hoisted.

[0024] The first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 are respectively wound with a wire rope 60, the free end of the wire rope 60 is fixedly connected with a hook 70, and a steam turbine 80 is placed below the hook 70. During the overhaul of the steam turbine 80, when it is necessary to hoist the steam turbine 80, the operator first hangs the hook 70 at the free end of the wire rope 60 on the first winding assembly 6 on the upper cylinder cover of the steam turbine 80, and then the first winding assembly 6 winds up the wire rope 60, so that the upper cylinder cover of the steam turbine 80 can be hoisted. The first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 are also respectively fixedly provided with a positioning assembly 90, and the first winding assembly The first winding component 6, the second winding component 7 and the third winding component 8 can respectively form a snap-fit ​​relationship with the positioning component 90. After the first winding component 6, the second winding component 7 or the third winding component 8 hoist different components of the steam turbine 80, the first winding component 6, the second winding component 7 or the third winding component 8 can be positioned for the steam turbine 80 through the limiting effect of the positioning component 90 to prevent the first winding component 6, the second winding component 7 or the third winding component 8 from rotating in the opposite direction under the action of gravity of the components of the steam turbine 80. While hoisting multiple components of the steam turbine 80, it can also prevent the components of the steam turbine 80 from falling to the ground and causing damage.

[0025] A push-pull component 9 is also fixedly arranged on the load-bearing component 5, and the output end of the push-pull component 9 is arranged through the first winding component 6, the second winding component 7 and the third winding component 8. A driving component 10 is fixedly arranged inside the sliding component 3, and the driving component 10 is used to drive the first winding component 6, the second winding component 7 or the third winding component 8 to rotate, and reel in the corresponding wire rope 60, thereby achieving the purpose of lifting multiple components of the steam turbine 80. A connecting component 20 is slidably embedded in the output shaft of the driving component 10, and the output end of the push-pull component 9 is rotationally connected to the connecting component 20.

[0026] When it is necessary to hoist the upper cylinder head of the steam turbine 80, the push-pull assembly 9 is started to pull the connecting assembly 20 out from the inside of the output shaft of the driving assembly 10. Since the first winding assembly 6 is provided with a sensor inside, when the push-pull assembly 9 drives the connecting assembly 20 to enter the first winding assembly 6, the sensor can sense the position of the connecting assembly 20. When the connecting assembly 20 moves to a suitable position, the push-pull assembly 9 stops running. At this time, the connecting assembly 20 is started to form a card connection relationship with the first winding assembly 6. At this time, The drive assembly 10 is started, and the output shaft of the drive assembly 10 drives the first winding assembly 6 to rotate synchronously through the connection assembly 20, so as to wind up the wire rope 60 on the first winding assembly 6, thereby realizing the hoisting work of the upper cylinder head of the steam turbine 80. When the upper cylinder head of the steam turbine 80 is hoisted to a suitable height, the drive assembly 10 stops running. At the same time, the positioning assembly 90 forms a card connection relationship with the first winding assembly 6, and the hoisting height of the upper cylinder head of the steam turbine 80 is fixed, so as to facilitate the subsequent hoisting of the internal parts of the steam turbine 80. Hoisting; when the upper cylinder head of the steam turbine 80 is hoisted, the connecting component 20 is started again, so that the clamping relationship between the connecting component 20 and the first winding component 6 is released, and then the push-pull component 9 is started to bring the connecting component 20 into the second winding component 7 and the third winding component 8 in turn. Since the second winding component 7 and the third winding component 8 are also provided with sensors inside, it is only necessary to repeat the above steps to realize the operation of hoisting other components of the steam turbine 80 using the second winding component 7 and the third winding component 8, and the load-bearing A first positioning assembly 30 is arranged on the bottom surface of the assembly 5, a second positioning assembly 40 is fixedly arranged on the bottom surface of the first positioning assembly 30, and a third positioning assembly 50 is fixedly arranged on the side wall of the second positioning assembly 40. The first positioning assembly 30, the second positioning assembly 40 and the third positioning assembly 50 are used to change the path of the wire rope 60 on the second winding assembly 7 and the third winding assembly 8 to prevent interference between the wire rope 60 and components of the turbine 80 during the lifting process, thereby affecting the normal lifting operation.

[0027] The sliding assembly 3 includes a slide 31 and a plurality of rollers 32 rotatably mounted on the inner wall of the slide 31. The plurality of rollers 32 are connected to each other by belts. The rollers 32 are rotatably mounted on the gantry 1. A pair of driving motors 33 are fixedly mounted on the outer walls on both sides of the slide 31. The output shaft of the driving motor 33 penetrates and is rotatably mounted on the side wall of the slide 31. The output shaft of the driving motor 33 is fixedly connected to the rollers 32. The driving motor 33 provides power output and drives the rollers 32 to move on the gantry 1, so that the sliding assembly 3 can drive the hoisting mechanism of the steam turbine maintenance hoisting equipment to adjust its position.

[0028] The extension assembly 4 includes a T-shaped mounting plate 41 fixedly mounted on an outer wall of one side of the slide 31 , and first electric telescopic columns 42 are fixedly mounted on the side walls at both ends of the T-shaped mounting plate 41 , respectively. The two first electric telescopic columns 42 are symmetrically arranged.

[0029] The load-bearing component 5 includes a load-bearing plate 51. The load-bearing plate 51 is provided 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 via 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 respectively pass through the corresponding first pulley groups 53. The main function of the first pulley group 53 is to limit the wire rope 60, which can reduce the shaking of the turbine 80 components during the lifting process.

[0030] The load-bearing plate 51 includes a plate body 511 . A slideway 512 is provided on the bottom surface of the plate body 511 . The first positioning assembly 30 is disposed inside the slideway 512 .

[0031] The first winding assembly 6 includes a pair of support frames 61 fixedly mounted on the top surface of the plate body 511, and a winding roller 62 is mounted on the two support frames 61 for rotation together. A steel wire rope 60 is wound around the winding roller 62, and a plurality of bevel gear blocks 63 are fixedly mounted on the circumferential side walls at the two end edges of the winding roller 62, respectively. The bevel gear blocks 63 and the positioning assembly 90 can achieve a snap-fit ​​relationship. A pair of snap-fit ​​grooves 64 are opened inside the winding roller 62, and the snap-fit ​​relationship can be formed 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 all consistent.

[0032] When the upper cylinder cover of the steam turbine 80 is hoisted, the push-pull assembly 9 drives the connection assembly 20 to move to the inside of the winding roller 62. When the sensor inside the winding roller 62 senses that the connection assembly 20 has moved to the specified position, the push-pull assembly 9 stops running, and the connection assembly 20 forms a card connection relationship with the card slot 64, and the drive assembly 10 is started to operate. The drive assembly 10 drives the winding roller 62 to rotate on the support frame 61 through the connection assembly 20 and reels the wire rope 60, thereby realizing the hoisting of the upper cylinder cover of the steam turbine 80. When the winding roller 62 is in the process of reeling the wire rope 60, the positioning assembly 90 will not form a card connection with the bevel gear block 63 When the upper cylinder head of the steam turbine 80 is hoisted to a suitable height, the restricting relationship between the connecting component 20 and the slot 64 is released, and the connecting component 20 is driven by the push-pull component 9 to move to the second winding component 7 or the third winding component 8 to hoist other components of the steam turbine 80. When the driving component 10 stops running, the positioning component 90 forms a clamping relationship with the bevel gear block 63. At this time, even if the restricting relationship between the connecting component 20 and the slot 64 is released, 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 upper cylinder head of the steam turbine 80 can always be maintained.

[0033] The push-pull assembly 9 includes a fixing frame 91 fixedly mounted on the side wall of the load-bearing plate 51, and an electric push rod 92 is fixedly mounted on the inner wall of the fixing frame 91. The output end of the electric push rod 92 is sequentially arranged on 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 rotationally connected to the connecting assembly 20.

[0034] The driving assembly 10 includes a dual-axis motor 101 fixedly installed inside the slide 31. The two output shafts of the dual-axis motor 101 are respectively rotatably arranged on the side walls of the slide 31. The dual-axis motor 101 is used to provide power output during the lifting process. A guard plate 102 is fixedly installed at the edge of the bottom opening of the slide 31 to protect the dual-axis motor 101.

[0035] A pair of sliding grooves 1011 and a pair of giving way grooves 1012 are respectively formed inside the output shaft of the dual-axis motor 101 .

[0036] The connection component 20 includes a connecting shaft 201, and a pair of limit clamping strips 202 are symmetrically fixedly installed on the circumferential side wall of the connecting shaft 201. The connecting shaft 201 is slidably set inside the output shaft of the dual-axis motor 101, and the limit clamping strip 202 is slidably installed in the inner cavity of the slide groove 1011. A pair of installation cavities 203 are opened inside the end of the connecting shaft 201 away from the dual-axis motor 101, and a clamping plate 204 is slidably installed inside the installation cavity 203. The clamping plate 204 and the installation cavity 203 are elastically connected by a first spring 205, and a clamping relationship can be formed between the clamping plate 204 and the clamping groove 64. A first permanent magnet 206 is fixedly installed on the inner side wall of the clamping plate 204, and a first electromagnet 207 is fixedly installed on the side wall inside the installation cavity 203, and the first electromagnet 207 is aligned with the first permanent magnet 206.

[0037] The first positioning assembly 30 includes a second electric telescopic column 301 horizontally fixedly installed in the inner cavity of the slide 512 , a first slide seat 302 is slidably installed in the inner cavity of the slide 512 , and an output end of the second electric telescopic column 301 is fixedly connected to the side wall of the first slide seat 302 .

[0038] The second positioning assembly 40 includes a third electric telescopic column 401 vertically fixedly mounted on the bottom surface of the first slide 302, a second pulley block 402 is fixedly mounted on the inner side wall of the output end of the third electric telescopic column 401, the wire rope 60 passes through the second pulley block 402, a vertical mounting plate 403 is fixedly mounted on the outer side wall of the output end of the third electric telescopic column 401, and a slide rail 404 is arranged on the inner side wall of the vertical mounting plate 403.

[0039] The third positioning assembly 50 includes a fourth electric telescopic column 501 vertically fixedly mounted on the slide rail 404, a second slide seat 502 is also slidably mounted on the slide rail 404, and an output end of the fourth electric telescopic column 501 is fixedly connected to a side wall of the second slide seat 502, a fifth electric telescopic column 503 is horizontally fixedly mounted on the second slide seat 502, a third pulley block 504 is fixedly mounted on the output end of the fifth electric telescopic column 503, and the wire rope 60 passes through the third pulley block 504.

[0040] Specifically, when the steam turbine 80 is to be overhauled and hoisted, the two pairs of first electric telescopic columns 42 are first started to extend in opposite directions until a suitable hoisting position is reached, at which time 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. Due to the provision of the clearance groove 1012, when the connecting assembly 20 is inside the output shaft of the dual-axis motor 101, the first spring 205 is in a natural state and will not be compressed, thereby preventing the overhaul hoisting equipment from being left unused for a long time. The first spring 205 is continuously compressed and fatigue occurs, shortening the service life of the first spring 205; the first electromagnet 207 is energized, so that an attraction is generated between the first permanent magnet 206 and the first electromagnet 207, thereby causing the card plate 204 to retract into the interior of the installation cavity 203. At this time, the electric push rod 92 is started, and the electric push rod 92 drives the connecting shaft 201 to be pulled out from the inside of the output shaft of the dual-axis motor 101 until the electric push rod 92 drives the connecting shaft 201 to move to the inside of the winding roller 62. When the sensor inside the winding roller 62 senses that the connecting shaft 201 has reached the specified position, the electric push rod 92 stops. The operation is stopped and the first electromagnet 207 is powered off. Under the elastic force of the first spring 205, the card plate 204 is ejected to the outside of the installation cavity 203 and is clamped in the inside of the card slot 64. At this time, the staff hangs the hook 70 of the free end of the wire rope 60 on the winding roller 62 on the upper cylinder cover of the turbine 80 and starts the dual-axis motor 101. Due to the limiting relationship between the limiting card strip 202 and the slide slot 1011, the dual-axis motor 101 can drive the connecting shaft 201 to rotate through the limiting card strip 202 when rotating. Due to the limiting relationship between the card plate 204 and the card slot 64, when When the connecting shaft 201 rotates, the winding roller 62 can be driven by the clamping plate 204 to wind up the wire rope 60, thereby achieving the effect of hoisting the upper cylinder head of the steam turbine 80. When the upper cylinder head of the steam turbine 80 is hoisted to a suitable height, the dual-axis motor 101 stops running. Since the positioning component 90 forms a clamping relationship with the bevel gear block 63, the positioning component 90 can position the hoisting height of the upper cylinder head of the steam turbine 80. Even if the clamping plate 204 is pulled out of the clamping slot 64, the winding roller 62 will not rotate in the opposite direction, thereby preventing the hoisting height of the upper cylinder head of the steam turbine 80 from being reduced or falling to the ground.

[0041] Furthermore, when the upper cylinder head of the steam turbine 80 is hoisted, at this time, the controller on the dual-axis motor 101 records the angle of rotation of the rotor as angle value one, and then energizes the first electromagnet 207, and an attraction is generated between the first permanent magnet 206 and the first electromagnet 207, so that the card plate 204 is retracted into the interior of the installation cavity 203, and then the card plate 204 is pulled out from the interior of the card slot 64, thereby releasing the restriction relationship between the card plate 204 and the card slot 64, and the electric push rod 92 is started again to drive the connecting shaft 201 to move toward 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 specified position, the first electromagnet 207 is de-energized again, so that the card plate 204 extends out of the installation cavity 203 and forms a card connection relationship with the second winding assembly 7. Then, the second electric telescopic column 301 is started again, and the second electric telescopic column 301 drives the first slide 302 in the inner cavity of the slideway 512 toward The third electric telescopic column 401 starts to operate and drives the third positioning assembly 50 to move downward as a whole. When the third positioning assembly 50 moves to a suitable position, the third electric telescopic column 401 stops operating, and then the fourth electric telescopic column 501 is used to fine-tune the positions of the second slide 502 and the fifth electric telescopic column 503. When the fifth electric telescopic column 503 reaches a suitable 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 close to the steam turbine 80 through the third pulley group 504. The operator then hangs the hook 70 on other components of the steam turbine 80, and then starts the dual-axis motor 101. The dual-axis motor 101 drives the second winding assembly 7 to wind up the wire rope 60 through the connecting assembly 20, thereby hoisting other components of the steam turbine 80.

[0042] The first positioning assembly 30, the second positioning assembly 40 and the third positioning assembly 50 are provided to change the path of the wire rope 60 to prevent the upper cylinder head of the steam turbine 80 from interfering with the wire rope 60 on the second winding assembly 7 and the third winding assembly 8 after the upper cylinder head of the steam turbine 80 is hoisted, thereby affecting the subsequent hoisting of other components of the steam turbine 80; when the second winding assembly 7 is used up, the controller on the dual-axis motor 101 records the angle of rotation of the rotor as angle value two; then the clamping plate 204 is clamped with the third winding assembly 8 in the same manner, and the third winding assembly 8 is driven to rotate by the dual-axis motor 101, and the wire rope 60 is wound up, so as to realize the hoisting operation of other components of the steam turbine 80, and when the third winding assembly 8 is used up, the controller on the dual-axis motor 101 again records the angle of rotation of the rotor as angle value three.

[0043] When it is necessary to drive the first winding component 6, the second winding component 7 and the third winding component 8 to rotate again, the controller on the dual-axis motor 101 will drive the output shaft and the connecting component 20 to rotate to the corresponding angle in advance through the rotor according to the above-mentioned angle value one, angle value two and angle value three, and then move the connecting component 20 to the first winding component 6, the second winding component 7 or the third winding component 8 for clamping through the electric push rod 92. For example, when it is necessary to drive the first winding component 6 to rotate again, the controller on the dual-axis motor 101 is first used to control the rotor to rotate to the same angle as angle value one. At this time, the clamping plate 204 on the connecting component 20 is aligned with the clamping slot 64. When After the first electromagnet 207 is powered off, the card plate 204 immediately pops up and inserts into the interior of the card slot 64 to achieve a card connection relationship for realizing power connection. Every time the first winding component 6, the second winding component 7 and the third winding component 8 rotate once, the corresponding angle value one, angle value two and angle value three will be updated. Through such a setting, when driving the first winding component 6 to wind, the card slot 64 of the card plate 204 can always be kept in an aligned state, and the card slot 64 of the card plate 204 will not be misaligned and unable to transmit power. For the second winding component 7 and the third winding component 8, it can also ensure power transmission, which is conducive to the smooth progress of the lifting operation.

[0044] The existing lifting equipment of the steam turbine 80 can only lift one component of the steam turbine 80 at a time. If multiple components of the steam turbine 80 are to be lifted at the same time, not only multiple lifting equipment are required to be used in conjunction, but also a large number of staff are required to assist in the operation of lifting multiple components at the same time. This setting method not only has a large workload, but also relatively cumbersome operation. The lifting equipment in the present invention, after the lifting of the upper cylinder head of the steam turbine 80 is completed through the first winding assembly 6, can also lift other components of the steam turbine 80 through the second winding assembly 7 and the third winding assembly 8. The lifting of multiple objects at a time in the present invention is realized on the same lifting equipment, and there is no need for multiple lifting equipment to be used in conjunction. Not only is the degree of automation high, but it also reduces the number of staff and saves manpower. In addition, it also improves the lifting efficiency, thereby improving the maintenance efficiency of the steam turbine 80.

[0045] Moreover, in the present invention, only a dual-axis motor 101 is required to cooperate with the push-pull component 9 and the connecting component 20 to drive the first winding component 6, the second winding component 7 and the third winding component 8 to wind up the wire rope 60 respectively, thereby achieving the effect of lifting more than 80 components of the turbine at one time, realizing the effect of one machine with multiple uses, reducing the capital investment in the equipment, and also reducing the maintenance cost of the lifting device in the present invention.

[0046] In order to solve the problem that the first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 cannot be positioned in one direction when the double-axis motor 101 drives the first winding assembly 6, the second winding assembly 7 and the third winding assembly 8 respectively through the connecting assembly 20 for hoisting, as shown in FIG. Figure 7 - Figure 8 and Fig.12 - Fig.13 As shown: The positioning assembly 90 includes a base 901 fixedly mounted on the inner wall of the support frame 61, and a mounting groove 902 is opened on the base 901. An arc-shaped clamping block 903 is slidably mounted in the inner cavity of the mounting groove 902. The bottom surface of the arc-shaped clamping 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 mounted on the bottom surface of the arc-shaped clamping block 903, and a second electromagnet 906 is fixedly mounted 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.

[0047] Specifically, when the winding roller 62 winds up the wire rope 60, the inclined surface of the bevel gear block 63 on the winding roller 62 applies pressure to the curved surface of the arc block 903, so that the arc block 903 retracts toward the inside of the installation groove 902 and compresses the second spring 904. When the winding roller 62 stops rotating, the arc block 903 is in the gap between the two bevel gear blocks 63. Under the elastic force of the second spring 904, the arc block 903 pops out. At this time, the winding roller 62 has a tendency to rotate in the opposite direction, and the vertical surface of the bevel gear block 63 conflicts with the vertical surface of the arc block 903, thereby achieving The present clamping effect makes it impossible for the winding roller 62 to rotate in the opposite direction, thereby having a positioning effect on the winding roller 62. When the winding roller 62 needs to be rotated in the opposite direction again, the second electromagnet 906 is energized, so that an attraction is generated between the second electromagnet 906 and the second permanent magnet 905, and the arc-shaped clamping block 903 is sucked into the interior of the mounting groove 902, thereby causing the vertical surface of the arc-shaped clamping block 903 to separate from the vertical surface of the bevel tooth block 63, and losing the resistance effect. At this time, the winding roller 62 can be driven to rotate in the opposite direction, and the connection relationship between the second winding component 7 and the third winding component 8 and the positioning component 90 is consistent with the above relationship.

[0048] By setting the positioning component 90, the hoisting heights of the first winding component 6, the second winding component 7 and the third winding component 8 can be positioned respectively, and multiple components of the steam turbine 80 can be staggered and hoisted to different heights. In addition, by adopting this hoisting method, while hoisting multiple components of the steam turbine 80 at one time, the distance between the various components of the steam turbine 80 will not be too far. Without affecting maintenance, it is more conducive to subsequent assembly, can reduce the time of installing the various components of the steam turbine 80, and is also conducive to mutual comparison between the various components, which is not only convenient for maintenance observation, but also helps to improve maintenance efficiency.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steam turbine maintenance hoisting device, comprising a gantry (1), wherein the lower parts of both ends of the gantry (1) are respectively provided with a travel mechanism (2), and a sliding assembly (3) is slidably provided on the gantry (1), characterized in that: Extension assemblies (4) are fixedly arranged on the outer walls of both sides of the sliding assembly (3), and load-bearing assemblies (5) are fixedly arranged on the two extension assemblies (4). A first winding assembly (6), a second winding assembly (7) and a third winding assembly (8) are fixedly arranged on the load-bearing assembly (5), and the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8) are arranged in a concentric and aligned manner. A steel wire rope (60) is wound around the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8), and a hook (70) is fixedly connected to the free end of the steel wire rope (60). A steam turbine (80) is placed below the hook (70). Positioning assemblies (90) are also fixedly arranged on the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8), and the first winding assembly (6) is fixedly connected to the free end of the steel wire rope (60). ), the second winding assembly (7) and the third winding assembly (8) are respectively capable of forming a snap-fitting relationship with the positioning assembly (90); a push-pull assembly (9) is also fixedly arranged on the load-bearing assembly (5); an output end of the push-pull assembly (9) is arranged through the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8); a driving assembly (10) is fixedly arranged inside the sliding assembly (3); a connecting assembly (20) is slidably arranged inside the output shaft of the driving assembly (10); the output end of the push-pull assembly (9) is rotatably connected to the connecting assembly (20); a first positioning assembly (30) is arranged on the bottom surface of the load-bearing assembly (5); a second positioning assembly (40) is fixedly arranged on the bottom surface of the first positioning assembly (30); and a third positioning assembly (50) is fixedly arranged on the side wall of the second positioning assembly (40).

2. The steam turbine maintenance hoisting equipment according to claim 1, characterized in that: The sliding assembly (3) comprises a slide (31) and a plurality of rollers (32) rotatably mounted on the inner side wall of the slide (31), the plurality of rollers (32) being connected to each other by a belt, the rollers (32) being rotatably mounted on the gantry (1), a pair of drive motors (33) being fixedly mounted on the outer side walls of both sides of the slide (31), an output shaft of the drive motor (33) being rotatably mounted on the side wall of the slide (31), and a fixed connection being formed between the output shaft of the drive motor (33) and the rollers (32); The extension assembly (4) comprises a T-shaped mounting plate (41) fixedly mounted on an outer wall of one side of the slide (31), and first electric telescopic columns (42) are respectively fixedly mounted on the side walls at both ends of the T-shaped mounting plate (41), and the two first electric telescopic columns (42) are arranged in symmetrical positions.

3. The steam turbine maintenance hoisting equipment according to claim 2, characterized in that: The load-bearing assembly (5) comprises a load-bearing plate (51), the load-bearing plate (51) being fixedly connected to the side wall of the extended section of the first electric telescopic column (42) via an L-shaped bracket (52), three first pulley blocks (53) being fixedly mounted on the side wall at the notch of the load-bearing plate (51), and the steel wire ropes (60) on the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8) respectively pass through the corresponding first pulley blocks (53); The load-bearing plate (51) comprises a plate body (511), a slideway (512) is provided on the bottom surface of the plate body (511), and the first position adjustment component (30) is arranged inside the slideway (512).

4. The steam turbine maintenance hoisting equipment according to claim 3, characterized in that: The first winding assembly (6) comprises a pair of support frames (61) fixedly mounted on the top surface of the plate body (511), a winding roller (62) being mounted on the two support frames (61) for co-rotation, a steel wire rope (60) being wound around the winding roller (62), a plurality of bevel gear blocks (63) being fixedly mounted on the circumferential side walls at both ends of the winding roller (62), the bevel gear blocks (63) being able to form a snap-fitting relationship with the positioning assembly (90), a pair of snap-fitting grooves (64) being provided inside the winding roller (62), the snap-fitting grooves (64) being able to form a snap-fitting relationship with the connecting assembly (20), and the composition structures and connection methods of the first winding assembly (6), the second winding assembly (7) and the third winding assembly (8) are all consistent.

5. The steam turbine maintenance hoisting equipment according to claim 3, characterized in that: The push-pull assembly (9) comprises a fixing frame (91) fixedly mounted on the side wall of the load-bearing plate (51), an electric push rod (92) fixedly mounted on the inner side wall of the fixing frame (91), an output end of the electric push rod (92) sequentially passing 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 connection assembly (20).

6. The steam turbine maintenance hoisting equipment according to claim 4, characterized in that: The driving assembly (10) comprises a dual-axis motor (101) fixedly mounted inside the slide (31); two output shafts of the dual-axis motor (101) are respectively rotatably mounted on the side walls of the slide (31); and a guard plate (102) is fixedly mounted on the edge of the bottom opening of the slide (31).

7. The steam turbine maintenance hoisting equipment according to claim 6, characterized in that: A pair of sliding grooves (1011) and a pair of giving way grooves (1012) are respectively provided inside the output shaft of the dual-axis motor (101).

8. The steam turbine maintenance hoisting equipment according to claim 7, characterized in that: The connection assembly (20) comprises a connecting shaft (201), a pair of limit clamping strips (202) are symmetrically fixedly mounted on the circumferential side wall of the connecting shaft (201), the connecting shaft (201) is slidably arranged inside the output shaft of the dual-axis motor (101), and the limit clamping strips (202) are slidably mounted in the inner cavity of the slide groove (1011), and a pair of installation cavities (203) are opened inside one end of the connecting shaft (201) away from the dual-axis motor (101), and the interior of the installation cavities (203) A card plate (204) is slidably mounted, the card plate (204) and the mounting cavity (203) are elastically connected via a first spring (205), and a card-connecting relationship can be formed between the card plate (204) and the card slot (64), a first permanent magnet (206) is fixedly mounted on the inner side wall of the card plate (204), a first electromagnet (207) is fixedly mounted on the side wall inside the mounting cavity (203), and the first electromagnet (207) and the first permanent magnet (206) are aligned.

9. The steam turbine maintenance hoisting equipment according to claim 3, characterized in that: The first positioning assembly (30) comprises a second electric telescopic column (301) fixedly mounted horizontally in the inner cavity of the slideway (512), a first slide seat (302) being slidably mounted in the inner cavity of the slideway (512), and an output end of the second electric telescopic column (301) is fixedly connected to a side wall of the first slide seat (302); The second positioning assembly (40) comprises a third electric telescopic column (401) vertically fixedly mounted on the bottom surface of the first slide seat (302); a second pulley block (402) is fixedly mounted on the inner side wall of the output end of the third electric telescopic column (401); the steel wire rope (60) passes through the second pulley block (402); a vertical mounting plate (403) is fixedly mounted on the outer side wall of the output end of the third electric telescopic column (401); and a slide rail (404) is arranged on the inner side wall of the vertical mounting plate (403); The third positioning assembly (50) comprises a fourth electric telescopic column (501) vertically fixedly mounted on a slide rail (404), a second slide seat (502) being slidably mounted on the slide rail (404), and an output end of the fourth electric telescopic column (501) being fixedly connected to a side wall of the second slide seat (502), a fifth electric telescopic column (503) being horizontally fixedly mounted on the second slide seat (502), a third pulley block (504) being fixedly mounted on an output end of the fifth electric telescopic column (503), and a steel wire rope (60) passing through the third pulley block (504).

10. The steam turbine maintenance hoisting equipment according to claim 4, characterized in that: The positioning assembly (90) comprises a base (901) fixedly mounted on the inner wall of the support frame (61); a mounting groove (902) is provided on the base (901); an arc-shaped clamping block (903) is slidably mounted in the inner cavity of the mounting groove (902); the bottom surface of the arc-shaped clamping block (903) and the bottom surface of the inner cavity of the mounting groove (902) are elastically connected via a second spring (904); a second permanent magnet (905) is fixedly mounted on the bottom surface of the arc-shaped clamping block (903); a second electromagnet (906) is fixedly mounted 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 arranged in an aligned manner.

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