Special hoisting device for flow passage component of high-water-head water turbine

Abstract

The invention discloses a special hoisting device for a flow passage component of a high-water-head water turbine. The special hoisting device comprises a braking mechanism, wherein the braking mechanism comprises a positioning assembly and a displacement assembly; the displacement assembly comprises a supporting plate, fixing plates, a hydraulic cylinder and a rotating wheel, the lower sides of the two ends of the supporting plate are each fixedly provided with two fixing plates, each fixing plate is symmetrically arranged, each fixing plate is rotationally connected with the two ends of a center shaft of the rotating wheel, and the fixing end of the hydraulic cylinder is fixed to the middle of the supporting plate; the rotating wheel can move along the guide rail, and an annular limiting groove matched with the upper side of the guide rail is formed in the arc-shaped wall face of the rotating wheel, so that the circumferential outer wall face of the annular limiting groove of the rotating wheel can abut against the upper side of the guide rail. The problem that the upper half part of the generator set needs to be dismantled is solved, the upper half part of the generator set is prevented from being dismantled, a hoisting trolley is directly adopted to hoist and slide the flow passage component to move out, and maintenance is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting trolley equipment, in particular to a special hoisting device for flow-through components of a high-head water turbine. Background Art

[0002] The overall maintenance of the turbine is mainly A-level maintenance and B-level maintenance. The maintenance objects include: water guide mechanism, water guide bearing and its cooling system, main shaft seal, runner and its main shaft, top cover, bottom ring, volute, tailwater pipe, volute drain valve, etc. According to the operation cycle of the generator set, A-level maintenance must be arranged for continuous operation for more than 4 years. The content of A maintenance includes inspection, treatment or replacement of the top cover, inspection, treatment or replacement of the auxiliary top cover, inspection or replacement of the bottom ring A, inspection or replacement of the bottom ring B, inspection or replacement of the guide vane, inspection or replacement of the runner, guide vane opening measurement, disassembly and assembly of the main shaft and intermediate shaft, disassembly and inspection of the relay, disassembly and inspection of the pressure regulating valve, inspection or replacement of the main shaft seal, and inspection of the control ring. At present, according to the status of the equipment, condition maintenance is also carried out. For example, if the cavitation of the turbine runner parts is serious, the runner must be hoisted out for maintenance.

[0003] According to the existing maintenance process, when dismantling the equipment, there is a sequence. The upper part of the generator must be removed first. The upper part of the generator includes the collector ring, upper frame, lower frame, rotor, stator, etc., and then the turbine flow components can be removed.

[0004] As we all know, there are great safety risks in the process of hoisting the generator rotor. If you are not careful, equipment damage accidents may occur. Generally, if the rotor equipment is normal, it is not recommended to hoist the rotor.

[0005] However, whenever you want to inspect the flow-through components of the turbine, you have to remove the upper part of the generator set first, which is very cumbersome. Therefore, a special lifting device for high-head turbine flow-through components is designed. When the turbine flow-through components need to be removed for inspection, the upper part of the generator can be kept intact and the turbine components can be lifted one by one from the foundation pit to a place where the bridge crane can lift them. Summary of the invention

[0006] The main purpose of the present invention is to provide a special lifting device for the flow-through components of a high-head turbine, so as to solve the problem in the prior art that when repairing the flow-through components of the turbine, the upper part of the generator set needs to be removed, and the upper part of the generator set can be avoided from being removed. The flow-through components can be directly lifted and slid by a lifting trolley to be moved out for easy maintenance.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A special hoisting device for flow-through components of a high-head turbine, a braking mechanism, the braking mechanism comprising a positioning component and a displacement component;

[0009] The displacement assembly includes a support plate, a fixed plate, a hydraulic cylinder and a rotating wheel. Two groups of fixed plates are respectively fixed to the lower sides of both ends of the support plate, each group of fixed plates is two and symmetrically arranged, each group of fixed plates is rotatably connected to the two ends of the central axis of the rotating wheel, the middle part of the support plate is fixed to the fixed end of the hydraulic cylinder, the rotating wheel can move along the guide rail, and an annular limiting groove matching the upper side of the guide rail is provided on the arc-shaped wall surface of the rotating wheel, so that the circumferential outer wall surface of the annular limiting groove of the rotating wheel can abut against the upper side of the guide rail;

[0010] The positioning assembly includes a positioning block, a double-headed electric push rod and a fixed rod, the fixed rod fixes the lower middle part of the support plate, the double-headed electric push rod is fixed to the lower end of the fixed rod, the telescopic rod ends of the double-headed electric push rod are respectively fixedly connected to the positioning blocks, and the positioning blocks can respectively resist the inner walls on both sides of the guide rail.

[0011] As a further limitation of the present invention, the lifting connecting frame is connected to the sliding component through a connecting component, the sliding component can slide along the guide rail, the sliding component is connected to the braking mechanism, the sliding component includes a hydraulic cylinder, a bracket, a connecting plate, a driving wheel bracket and a driving wheel, the movable end of the hydraulic cylinder is fixedly connected to the middle part of one side of the bracket, the bracket is U-shaped, the lower parts of the two sides of the bracket are respectively fixedly connected to the connecting plates, the lower side of each connecting plate is respectively fixedly connected to the symmetrical driving wheel bracket, each driving wheel bracket is a pair of vertical rods, each driving wheel bracket is respectively rotatably connected to the driving wheel, an annular groove is provided on the arc-shaped wall surface of the driving wheel, and the width of the annular groove is the same as the width of the upper side of the guide rail.

[0012] As a further definition of the present invention, the connecting assembly includes a first screw, a sliding rod, a sliding groove, a second motor, a top block, a second screw and a guide shaft, the sliding grooves are respectively opened on both sides of the bracket, and the two ends of the sliding rod are respectively arranged in each of the sliding grooves, one end of the sliding rod is threadedly engaged with the first screw, the first screw is arranged in the sliding groove, each first screw is rotatably connected to the bracket, and the other end of the sliding rod is passed through the guide shaft, the two ends of the guide shaft are respectively fixed to the bracket, one end of the first screw is fixedly connected to the output shaft of the second motor, and the second motor fixes one end of the bracket, the two ends of the middle cross bar of the bracket and the sliding rod are respectively threadedly engaged with two second screws, the second screws are arranged in a rectangular shape, and the upper end of each second screw is respectively fixedly connected to the top block, and the top block can abut the lower side of the upper end of the lifting connecting frame.

[0013] As a further limitation of the present invention, the connecting plate is also connected to an auxiliary limiting assembly, and the auxiliary limiting assembly includes an auxiliary limiting wheel, a round shaft, a straight groove rod, a V-shaped rod, a limiting column and a second double-headed hydraulic cylinder. The lower side of each connecting plate is respectively fixedly connected to the fixed end of the second double-headed hydraulic cylinder, and the movable end of each second double-headed hydraulic cylinder is respectively fixedly connected to the middle part of the straight groove rod. Symmetrical limiting columns are respectively arranged in the sliding groove of each straight groove rod. The upper end of each limiting column is respectively fixedly connected to one end of the V-shaped rod that drives the V-shaped rod, and the bending part of each V-shaped rod is respectively rotatably connected to the connecting plate. The other end of each V-shaped rod is respectively fixedly connected to the upper end of the round shaft, and the lower end of each round shaft is respectively rotatably connected to the center of the auxiliary limiting wheel. The auxiliary limiting wheel matches the guide rail, and the auxiliary limiting wheel can slide along the guide rail.

[0014] As a further limitation of the present invention, an annular limiting groove matching the side width of the guide rail is provided on the arc-shaped circumferential surface of the auxiliary limiting wheel.

[0015] As a further limitation of the present invention, a flow component posture monitoring assembly is also provided on the lower side of the bracket 52, and the flow component posture monitoring assembly includes a sensor fixing seat 8 and a plurality of sensors 9, and the sensor 9 is fixed to the lower part of one side of the sensor fixing seat 8, and the sensor fixing seat 8 is fixed to the middle part of the lower side of the bracket 52.

[0016] As a further limitation of the present invention, the sensors 9 are evenly arranged around the circumference, and the sensors 9 are visual sensors.

[0017] As a further limitation of the present invention, a controller is also included, which receives data from the sensor 9 and controls the positioning component 3, the displacement component 1, the sliding component 5, the connecting component 6 and the auxiliary limiting component 7.

[0018] The invention provides the coordinated work of the hydraulic cylinder and the electric push rod, which realizes the rapid positioning and movement of the flow-through component. When the positioning block of the positioning component is pressed against the guide rail, the positions of the positioning component and the displacement component are fixed, and the telescopic rod of the hydraulic cylinder pulls the sliding component and the connecting component fixed thereto to move. Under the action of the connecting component, the lifting connecting frame and the high-head water turbine flow-through component fixed thereto move together. When the movable end stroke of the hydraulic cylinder is extended to the maximum, the positioning block of the positioning component moves in the reverse direction and no longer presses against the guide rail, and the movable end of the hydraulic cylinder retracts. Due to the gravity of the lifting connecting frame, the high-head water turbine, the sliding component and the connecting component, the movement of the movable end of the hydraulic cylinder cannot drive the lifting connecting frame, the high-head water turbine, the sliding component and the connecting component to move. Therefore, the movable end of the hydraulic cylinder does not move, and the fixed end drives the positioning component and the displacement component to move in the direction of the lifting connecting frame until the maximum stroke of the hydraulic cylinder is completed, so that the sliding of the entire device and the high-head water turbine along the guide rail is realized, which significantly improves the lifting efficiency.

[0019] The auxiliary limit assembly can effectively assist the movement and support of the flow-through components and sliding components, preventing accidental sliding or falling off during the lifting process, thereby improving the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure diagram of a special hoisting device for high-head turbine flow components of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure diagram of a special hoisting device for high-head turbine flow components of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 A special hoisting device for high-head turbine flow components of the present invention Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 The partial structure diagram of a special hoisting device for high-head turbine flow components of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 5 The partial structure diagram of a special hoisting device for high-head turbine flow components of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 6 It is a side view of a special hoisting device for flow-through components of a high-head turbine according to the present invention;

[0026] Explanation of reference numbers: 1. Displacement assembly, 11. Support plate, 13. Fixed plate, 14. Rotating wheel, 15. Hydraulic cylinder, 2. Guide rail, 3. Positioning assembly, 31. Positioning block, 32. Double-headed electric push rod, 33. Fixed rod, 4. Lifting connecting frame, 5. Sliding assembly, 51. Hydraulic cylinder, 52. Bracket, 53. Connecting plate, 54. Driving wheel bracket, 55. Driving wheel, 6. Connecting assembly, 61. First screw rod, 62. Sliding rod, 63. Slide groove, 64. Second motor, 65. Top block, 66. Second screw rod, 67. Guide shaft, 7. Auxiliary limiting assembly, 71. Auxiliary limiting wheel, 72. Round shaft, 73. Straight groove rod, 74. V-shaped rod, 75. Limiting column, 76. Second double-headed hydraulic cylinder, 8. Sensor fixing seat, 9. Sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] like Figure 1-Figure 6 As shown, this embodiment provides an embodiment of a special lifting device for a high-head turbine flow component. In this embodiment, see Figure 1-Figure 4 , a special hoisting device for flow-through components of a high-head turbine, a braking mechanism, the braking mechanism comprising a positioning component 3 and a displacement component 1;

[0029] The displacement assembly 1 includes a support plate 11, a fixed plate 13, a hydraulic cylinder 15 and a rotating wheel 14. Two groups of fixed plates 13 are respectively fixed to the lower sides of both ends of the support plate 11. Each group of fixed plates 13 is two and symmetrically arranged. Each group of fixed plates 13 is rotatably connected to the two ends of the central axis of the rotating wheel 14. The fixed end of the hydraulic cylinder 15 is fixed to the middle of the support plate 11. The rotating wheel 14 can move along the guide rail 2. An annular limiting groove matching the upper side of the guide rail 2 is provided on the arc-shaped wall surface of the rotating wheel 14, so that the circumferential outer wall surface of the annular limiting groove of the rotating wheel 14 can abut against the upper side of the guide rail 2.

[0030] The positioning assembly 3 includes a positioning block 31, a double-headed electric push rod 32 and a fixed rod 33. The fixed rod 33 fixes the lower middle part of the support plate 11, and the double-headed electric push rod 32 is fixed to the lower end of the fixed rod 33. The telescopic rod ends of the double-headed electric push rod 32 are respectively fixedly connected to the positioning block 31, and the positioning blocks 31 can respectively resist the inner walls on both sides of the guide rail 2.

[0031] Furthermore, the rotating wheel 14 can rotate and move along the guide rail 2. The installation of the guide rail 2 is a prior art and will not be described in detail.

[0032] The hoisting connecting frame 4 is connected to the sliding component 5 through the connecting component 6. The sliding component 5 can slide along the guide rail 2. The sliding component 5 is connected to the braking mechanism. The sliding component 5 includes a hydraulic cylinder 51, a bracket 52, a connecting plate 53, a driving wheel bracket 54 and a driving wheel 55. The movable end of the hydraulic cylinder 51 is fixedly connected to the middle part of one side of the bracket 52. The bracket 52 is U-shaped. The lower parts of the two sides of the bracket 52 are respectively fixedly connected to the connecting plates 53. The lower side of each connecting plate 53 is respectively fixedly connected to the symmetrical driving wheel bracket 54. Each driving wheel bracket 54 is a pair of vertical rods. Each driving wheel bracket 54 is respectively rotatably connected to the driving wheel 55. An annular groove is provided on the arc-shaped wall surface of the driving wheel 55, and the width of the annular groove is the same as the width of the upper side of the guide rail 2.

[0033] Furthermore, a mounting hole is provided on the lower side of the hoisting connecting frame 4 for installing the flow-through components of the high-head turbine. The connecting assembly 6 connects the hoisting connecting frame 4 and the sliding assembly 5 , and the driving wheel 55 of the sliding assembly 5 can slide along the guide rail 2 .

[0034] In this embodiment, the positioning assembly 3 can extend and retract the positioning block 31 through the movable end of the double-headed electric push rod 32, so that the positioning block 31 is pressed against the inner side of the guide rail 2. When the positioning blocks 31 on both sides are pressed against the guide rail 2, the displacement assembly 1 is fixed, so as to limit the displacement assembly 1.

[0035] The movable end of the hydraulic cylinder 15 of the displacement assembly 1 is fixedly connected to the bracket 52 of the sliding assembly 5. When the positioning block 31 of the positioning assembly 3 is pressed against the guide rail 2, the positions of the positioning assembly 3 and the displacement assembly 1 are fixed, and the telescopic rod of the hydraulic cylinder 15 pulls the sliding assembly 5 and the connecting assembly 6 fixed thereto to move. Since the connecting assembly 6 is connected to the hoisting connecting frame 4, when the telescopic rod of the hydraulic cylinder 15 pulls the sliding assembly 5, under the action of the connecting assembly 6, the hoisting connecting frame 4 and the high-head turbine flow-through components fixed thereto move together, and the driving wheel 55 of the sliding assembly 5 rotates and slides on the upper side of the guide rail 2. When the movable end of the hydraulic cylinder 15 is extended, the sliding assembly 5 and the connecting assembly 6 are moved. When it reaches the maximum, the positioning block 31 of the positioning assembly 3 moves in the opposite direction and no longer resists the guide rail 2, and the movable end of the hydraulic cylinder 15 retracts. Due to the gravity of the hoisting connecting frame 4, the high-head turbine, the sliding assembly 5 and the connecting assembly 6, the movement of the movable end of the hydraulic cylinder 15 cannot drive the hoisting connecting frame 4, the high-head turbine, the sliding assembly 5 and the connecting assembly 6 to move. Therefore, the movable end of the hydraulic cylinder 15 does not move, and the fixed end will drive the positioning assembly 3 and the displacement assembly 1 to move in the direction of the hoisting connecting frame 4 until the maximum stroke of the hydraulic cylinder 15 is completed, thereby realizing the sliding of the entire device and the high-head turbine along the guide rail 2.

[0036] The connecting assembly 6 includes a first screw rod 61, a slide rod 62, a slide groove 63, a second motor 64, a top block 65, a second screw rod 66 and a guide shaft 67. The slide grooves 63 are respectively provided on both sides of the bracket 52. The two ends of the slide rod 62 are respectively provided in each of the slide grooves 63. One end of the slide rod 62 is threadedly matched with the first screw rod 61. The first screw 61 is provided in the slide groove 63. Each first screw 61 is rotatably connected to the bracket 52. The other end of the slide rod 62 is engaged by the guide shaft 67 passes through, and the two ends of the guide shaft 67 are respectively fixed to the bracket 52, one end of the first screw 61 is fixedly connected to the output shaft of the second motor 64, and the second motor 64 is fixed to one end of the bracket 52, and the two ends of the middle cross bar of the bracket 52 and the sliding rod 62 are respectively threaded with two second screws 66, and the second screws 66 are arranged in a rectangular shape, and the upper end of each second screw 66 is respectively fixedly connected to the top block 65, and the top block 65 can abut the lower side of the upper end of the lifting connecting frame 4.

[0037] In this embodiment, the connecting assembly 6 can drive the first screw rod 61 to rotate by driving the second motor 64, thereby driving the slide bar 62 to move. When the slide bar 62 moves along the guide shaft 67, it can drive the second screw rod 66 that matches with its thread to move. The second screw rod 66 can drive the top block 65 to move. When the top blocks 65 on both sides are far away and the gap between the slide bar 62 and the bracket 52 does not hinder the hanging connection frame 4 from passing through, the hanging connection frame 4 can be passed through. Then, the second motor 64 drives the slide bar 62 to move, and the top block 65 is driven to invert the upper and lower sides of the hanging connection frame 4.

[0038] The height of the lower mounting hole of the lifting connecting frame 4 can be adjusted according to the height of the high-head turbine flow component that needs to be installed. Therefore, the upper side of the lifting connecting frame 4 also changes position accordingly. When the position changes, in order to adapt to the height of the lifting connecting frame 4, the top block 65 can be driven to move by rotating the second screw 66, so that the upper side of the top block 65 always abuts against the upper end of the lifting connecting frame 4, thereby supporting the lifting connecting frame 4, and then driving the lifting connecting frame 4 to move when the sliding assembly 5 slides.

[0039] The connecting plate 53 is also connected to the auxiliary limiting assembly 7, which includes an auxiliary limiting wheel 71, a round shaft 72, a straight groove rod 73, a V-shaped rod 74, a limiting column 75 and a second double-headed hydraulic cylinder 76. The lower side of each of the connecting plates 53 is respectively fixedly connected to the fixed end of the second double-headed hydraulic cylinder 76, and the movable end of each of the second double-headed hydraulic cylinders 76 is respectively fixedly connected to the middle part of the straight groove rod 73. The sliding groove of each straight groove rod 73 is respectively provided with symmetrical limiting columns 75. The upper end of each limiting column 75 is respectively fixedly connected to one end of the V-shaped rod 74, and the bending part of each V-shaped rod 74 is respectively rotatably connected to the connecting plate 53. The other end of each V-shaped rod 74 is respectively fixedly connected to the upper end of the round shaft 72, and the lower end of each round shaft 72 is respectively rotatably connected to the center of the auxiliary limiting wheel 71. The auxiliary limiting wheel 71 matches the guide rail 2, and the auxiliary limiting wheel 71 can slide along the guide rail 2.

[0040] Furthermore, an annular limiting groove matching the side width of the guide rail 2 is provided on the arc-shaped circumferential surface of the auxiliary limiting wheel 71 .

[0041] In this embodiment, an auxiliary limiting assembly 7 is provided to achieve auxiliary sliding and stable support for the sliding assembly 5 and the connecting assembly 6. The movable end of the second double-headed hydraulic cylinder 76 of the auxiliary limiting assembly 7 can drive the straight groove rod 73 to extend and retract. The movement of the straight groove rod 73 can drive the limiting column 75 to move. The limiting column 75 can drive the V-shaped rod 74 to swing. The other end of the V-shaped rod 74 drives the auxiliary limiting wheels 71 to move closer to or away from each other. When the auxiliary limiting wheels 71 approach each other and abut against the guide rail 2, the movable end of the second double-headed hydraulic cylinder 76 stops working, so that the auxiliary limiting wheel 71 can rotate and move along the guide rail 2.

[0042] Preferably, the arc-shaped wall surface of the annular limiting groove of the auxiliary limiting wheel 71 is provided with a pressure sensor, and the pressure sensor is used to monitor the pressure applied to the auxiliary limiting wheel 71 when clamping the guide rail 2. When the auxiliary limiting wheel 71 abuts against the guide rail 2, the pressure sensor senses that the pressure is at a preset pressure threshold, and transmits the information to the controller. The controller controls the active end of the second double-headed hydraulic cylinder 76 to stop moving to avoid clamping the guide rail 2 too tightly.

[0043] A flow component posture monitoring assembly is also provided on the lower side of the bracket 52, and the flow component posture monitoring assembly includes a sensor fixing seat 8 and a plurality of sensors 9. The sensor 9 is fixed to the lower part of one side of the sensor fixing seat 8, and the sensor fixing seat 8 is fixed to the middle part of the lower side of the bracket 52.

[0044] The sensors 9 are evenly arranged around the circumference, and the sensors 9 are visual sensors.

[0045] It also includes a controller, which receives data from the sensor 9 and controls the positioning component 3, the displacement component 1, the sliding component 5, the connecting component 6 and the auxiliary limiting component 7.

[0046] Furthermore, the controller is electrically connected to the hydraulic cylinder 15 , the double-headed electric push rod 32 , the second motor 64 and the second double-headed hydraulic cylinder 76 .

[0047] In this embodiment, the sensor 9 monitors the posture of the flow component in real time. When the posture of the flow component deviates beyond a preset value, the controller controls the entire device to stop running and sends an alarm message to the terminal.

[0048] When in use, connect the hoisting connecting frame to the flow-through component of the high-head turbine to ensure a firm connection, so that the upper side of the top block 65 of the connecting assembly 6 always abuts against the upper end and lower part of the hoisting connecting frame 4 to support the hoisting connecting frame 4, start the double-head electric push rod 32, so that the positioning block 31 extends out and abuts against the inner walls on both sides of the guide rail 2 to limit the displacement assembly 1. At this time, the displacement assembly 1 is fixed and ready for subsequent hoisting work. The contact between the auxiliary limiting wheel 71 and the guide rail 2 is controlled by the second double-head hydraulic cylinder 76 of the auxiliary limiting assembly 7 to achieve auxiliary sliding and stable support. Start the hydraulic cylinder 15 to move the sliding assembly 5 and the connecting assembly 6 along the guide rail 2. Under the pull of the hydraulic cylinder 15, the hoisting connecting frame 4 and the flow-through component move together, and the driving wheel 55 of the sliding assembly 5 is on the guide rail 2. When the movable end of the hydraulic cylinder 15 extends to the maximum stroke, the lifting connection frame 4 and the flow-through components move a certain distance. At this time, the positioning block 31 of the positioning assembly 3 moves in the opposite direction and no longer resists the guide rail 2. The movable end of the hydraulic cylinder 15 moves in the opposite direction. Due to the gravity of the lifting connection frame 4, the high-head turbine, the sliding assembly 5 and the connecting assembly 6, the movement of the movable end of the hydraulic cylinder 15 cannot drive the lifting connection frame 4, the high-head turbine, the sliding assembly 5 and the connecting assembly 6 to move. Therefore, the movable end of the hydraulic cylinder 15 does not move, and the fixed end drives the positioning assembly 3 and the displacement assembly 1 to move in the direction of the lifting connection frame 4 until the maximum stroke of the hydraulic cylinder 15 is completed. The above movement process is repeated continuously to realize the sliding of the entire device and the flow-through components of the high-head turbine along the guide rail 2.

[0049] During the entire lifting process, the sensor 8 monitors the posture of the current-passing components in real time. Once a posture deviation is detected, the controller will immediately stop the device operation and send an alarm message to the terminal to ensure the safety of the lifting process.

[0050] The specific implementation methods of the invention are described in detail above, but they are only examples, and the invention is not limited to the specific implementation methods described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the invention, and therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the invention should be included in the scope of the invention.

Claims

1. A special hoisting device for high-head turbine flow components, characterized in that: A braking mechanism, the braking mechanism comprising a positioning component (3) and a displacement component (1); The displacement assembly (1) comprises a support plate (11), a fixed plate (13), a hydraulic cylinder (15) and a rotating wheel (14); two groups of fixed plates (13) are respectively fixed on the lower sides of both ends of the support plate (11); each group of fixed plates (13) is two and symmetrically arranged; each group of fixed plates (13) is rotatably connected to the two ends of the central axis of the rotating wheel (14); the fixed end of the hydraulic cylinder (15) is fixed to the middle of the support plate (11); the rotating wheel (14) can move along the guide rail (2); an annular limiting groove matching the upper side of the guide rail (2) is arranged on the arc-shaped wall surface of the rotating wheel (14), so that the circumferential outer wall surface of the annular limiting groove of the rotating wheel (14) can abut against the upper side of the guide rail (2); The positioning assembly (3) comprises a positioning block (31), a double-headed electric push rod (32) and a fixing rod (33); the fixing rod (33) is fixed to the middle part of the lower side of the support plate (11); the double-headed electric push rod (32) is fixed to the lower end of the fixing rod (33); the ends of the telescopic rods of the double-headed electric push rod (32) are respectively fixedly connected to the positioning block (31); and the positioning blocks (31) can respectively abut against the inner walls on both sides of the guide rail (2).

2. The special hoisting device for high-head turbine flow components according to claim 1 is characterized in that: The hoisting connection frame (4) is connected to the sliding assembly (5) through a connecting assembly (6); the sliding assembly (5) can slide along the guide rail (2); the sliding assembly (5) is connected to the braking mechanism; the sliding assembly (5) comprises a hydraulic cylinder (51), a bracket (52), a connecting plate (53), a driving wheel bracket (54) and a driving wheel (55); the movable end of the hydraulic cylinder (51) is fixedly connected to the middle part of one side of the bracket (52); the bracket (52) is U-shaped; the lower parts of both sides of the bracket (52) are respectively fixedly connected to the connecting plates (53); the lower side of each connecting plate (53) is respectively fixedly connected to the symmetrical driving wheel bracket (54); each driving wheel bracket (54) is a pair of vertical rods; each driving wheel bracket (54) is respectively rotatably connected to the driving wheel (55); an annular groove is provided on the arc-shaped wall surface of the driving wheel (55); and the width of the annular groove is the same as the width of the upper side of the guide rail (2).

3. The special hoisting device for high-head turbine flow components according to claim 2 is characterized in that: The connecting assembly (6) comprises a first screw rod (61), a slide rod (62), a slide groove (63), a second motor (64), a top block (65), a second screw rod (66) and a guide shaft (67). The slide grooves (63) are respectively provided on both sides of the bracket (52). Two ends of the slide rod (62) are respectively provided in each of the slide grooves (63). One end of the slide rod (62) is threadedly matched with the first screw rod (61). The first screw rod (61) is provided in the slide groove (63). Each of the first screw rods (61) is rotatably connected to the bracket (52). The other end of the slide rod (62) is screwed. The guide shaft (67) passes through, and the two ends of the guide shaft (67) are respectively fixed to the bracket (52), one end of the first screw rod (61) is fixedly connected to the output shaft of the second motor (64), and the second motor (64) is fixed to one end of the bracket (52), and two second screw rods (66) are respectively threadedly engaged on the two ends of the middle cross bar of the bracket (52) and the sliding rod (62), and the second screw rods (66) are arranged in a rectangular shape, and the upper end of each second screw rod (66) is respectively fixedly connected to the top block (65), and the top block (65) can abut against the lower side of the upper end of the lifting connection frame (4).

4. The special hoisting device for flow-through components of a high-head turbine according to claim 2 is characterized in that: The connecting plate (53) is also connected to an auxiliary limiting assembly (7), and the auxiliary limiting assembly (7) comprises an auxiliary limiting wheel (71), a round shaft (72), a straight groove rod (73), a V-shaped rod (74), a limiting column (75) and a second double-headed hydraulic cylinder (76). The lower side of each connecting plate (53) is respectively fixedly connected to a fixed end of the second double-headed hydraulic cylinder (76), and the movable end of each second double-headed hydraulic cylinder (76) is respectively fixedly connected to the middle part of the straight groove rod (73). A symmetrical The limiting column (75) is respectively fixedly connected to one end of the driving V-shaped rod (74) at the upper end of each limiting column (75); the bending part of each V-shaped rod (74) is respectively rotatably connected to the connecting plate (53); the other end of each V-shaped rod (74) is respectively fixedly connected to the upper end of the circular shaft (72); the lower end of each circular shaft (72) is respectively rotatably connected to the center of the auxiliary limiting wheel (71); the auxiliary limiting wheel (71) matches the guide rail (2); and the auxiliary limiting wheel (71) can slide along the guide rail (2).

5. The special hoisting device for high-head turbine flow components according to claim 4 is characterized in that: An annular limiting groove matching the side width of the guide rail (2) is provided on the arc-shaped circumferential surface of the auxiliary limiting wheel (71).

6. The special hoisting device for high-head turbine flow components according to claim 5 is characterized in that: A flow component posture monitoring assembly is also provided on the lower side of the bracket (52), and the flow component posture monitoring assembly includes a sensor fixing seat (8) and a plurality of sensors (9), wherein the sensor (9) is fixed to the lower part of one side of the sensor fixing seat (8), and the sensor fixing seat (8) is fixed to the middle part of the lower side of the bracket (52).

7. The special hoisting device for flow-through components of a high-head turbine according to claim 6 is characterized in that: The sensors (9) are evenly arranged around the circumference, and the sensors (9) are visual sensors.

8. The special hoisting device for high-head turbine flow components according to claim 7 is characterized in that: It also includes a controller, which receives data from the sensor (9) and controls the positioning component (3), the displacement component (1), the sliding component (5), the connecting component (6) and the auxiliary limiting component (7).

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