A human-carrying frame suspension system of an arc gate of a hydropower station and an operation method thereof

Abstract

A kind of water power station arc gate manned frame suspension system and operating method, including crane device, hoist head beam and manned frame device, crane device includes movable base, hoist arm and hoist rope control mechanism, movable base is installed on arc gate support arm, can walk along support arm;Hoist arm is installed with hoist head beam, hoist head beam includes hoist head load-bearing seat and hoist head crossbeam, hoist head crossbeam is rotationally engaged with hoist head load-bearing seat, and hoist head crossbeam is equipped with the passageway of hoist rope dress;Relative position between hoist head crossbeam and hoist head load-bearing seat is adjusted by position adjusting device, hoist rope control mechanism includes two sets of independent steel wire rope winding and unwinding drive device, for realizing single rope independent control and double rope linkage control;Hoist rope one end is installed on hoist rope control mechanism, other end is connected with steel wire rope end mounting wheel, steel wire rope end mounting wheel is connected with manned frame device by connecting shaft.This application can adjust the position and posture of manned frame according to the requirement of different working surface inside arc gate by setting hoist head beam on hoist arm and using position adjusting device to control the rotation of hoist head crossbeam relative to hoist head load-bearing seat, keep balance in lifting and moving process;Anti-collision device is arranged at the bottom of manned frame, can keep preset safety distance with gate surface, avoid collision, improve the flexibility and adhesion of maintenance operation.

Description

Technical Field

[0001] This invention belongs to the field of maintenance devices for arc gates in hydropower stations, and specifically relates to a suspension system for a manned frame of an arc gate in a hydropower station and its operation method. Background Technology

[0002] The arched gates of a hydroelectric power station are a crucial component of hydraulic structures, used to control the opening and closing of water flow in the reservoir. Due to their long-term underwater or water-vapor interface environment, the surface coating of the arched gates is prone to corrosion and peeling, and the gate leaf structure may also experience fatigue or deformation. Therefore, regular inspection, maintenance, and repair are required.

[0003] During the aforementioned maintenance work, it is typically necessary to transport maintenance personnel to the gate surface for high-altitude operations. Currently, the industry standard practice is to use a truck crane or existing crane in conjunction with a suspended platform to transport personnel to the designated location. However, existing suspension systems still present the following technical problems in practical applications: 1. The arched gate is equipped with support arms and hinges at the back. When carrying out maintenance work on its sides and bottom, traditional suspended platforms are mostly rigidly connected or simply suspended at a single point, making it difficult to adjust and control their posture according to the working surface of the gate, thus failing to meet the requirements for maintenance work on these parts. Furthermore, the single-point suspended platform is prone to collision with the gate surface during movement, or cannot fit tightly against the gate surface, affecting the work efficiency and safety of maintenance personnel.

[0004] 2. The arc-shaped gate itself has a large structural size, and the crane cannot effectively cover the working area. The truck crane can cover the above-mentioned working area, but it requires a large tonnage truck crane, which will occupy the top of the power station dam, affect the normal passage on both sides of the dam, and is not conducive to the busy maintenance work of the hydropower station.

[0005] 3. Existing hoist structures are generally simple and lack precise position adjustment mechanisms. When horizontal rotation or orientation adjustment of the suspended platform is required, it often relies on the overall movement of the boom, which is cumbersome and has low precision, making it difficult to meet the needs of refined maintenance.

[0006] 4. The existing suspended platform lifting operations do not have safety redundancy design. All of the above-mentioned lifting equipment are single wire rope structures, and no double insurance measures are designed for the operators, which poses a serious safety hazard. Summary of the Invention

[0007] The technical problem to be solved by this invention is to provide a suspension system and operation method for a personnel carrier frame of an arc gate in a hydropower station. This invention, by setting a lifting beam on the boom and using a position adjustment device to control the rotational engagement of the lifting beam relative to the lifting head support, can adjust the position and posture of the personnel carrier frame according to the needs of different working surfaces inside the arc gate, maintaining balance during lifting and movement. The personnel carrier frame is equipped with an anti-collision device to maintain a preset safe distance from the gate surface, avoiding collisions and improving the flexibility and fit of maintenance operations.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A personnel-carrying frame suspension system for an arc-shaped gate in a hydropower station includes a crane device, a lifting head beam, and a personnel-carrying frame. The crane device includes a movable base, a boom, and a rope control mechanism. The movable base is installed on the boom of the arc-shaped gate and can move along the boom. The lifting head beam is installed on the boom and includes a lifting head support and a lifting head crossbeam. The lifting head crossbeam is rotatably engaged with the lifting head support and has a channel for the rope to pass through. The relative position between the lifting head crossbeam and the lifting head support is adjusted by a position adjustment device. The rope control mechanism includes two independent wire rope winding and unwinding drive devices and two drums. The two independent wire rope winding and unwinding drive devices are used to control the winding and unwinding amount of the corresponding rope and can perform single-rope independent control or double-rope synchronous linkage control under control signals. One end of the hoisting rope is mounted on the hoisting rope control mechanism, and the other end is connected to the personnel carrier device. The personnel carrier device includes a personnel carrier frame and an adjustable personnel carrier frame mechanism.

[0009] As a preferred embodiment, the position adjustment device includes a main drive motor for rotating, which drives the drive gear to rotate. The drive gear meshes with the driven gear, and the driven gear is connected to the lifting beam.

[0010] As a preferred embodiment, the lifting head beam has an inverted T-shaped structure, and the lifting head support has a hollow cylindrical structure. The upper, middle, and lower sides of the lifting head crossbeam are respectively equipped with a lifting head load-bearing thrust bearing, a first rotating thrust bearing, and a second rotating thrust bearing. The lifting head crossbeam rotates in conjunction with the lifting head load-bearing seat through the lifting head load-bearing thrust bearing, the first rotating thrust bearing, and the second rotating thrust bearing.

[0011] As a preferred embodiment, the lifting head beam has two symmetrically arranged L-shaped channels inside, and multiple wire rope guide wheels are provided in the L-shaped channels, with at least one wire rope guide wheel installed at the corner of the L-shaped channel.

[0012] As a preferred embodiment, the top of the manned frame device is equipped with a wire rope end mounting wheel, which is used to connect with the suspension rope, and the suspension rope is a wire rope.

[0013] As a preferred embodiment, the lifting head support also includes a lifting head mounting ear plate and a lifting head functional housing, with the lifting head mounting ear plate installed on the top of the lifting head functional housing.

[0014] As a preferred embodiment, the lifting head functional housing is provided with a lifting head crossbeam shaft mounting hole, a first mounting slot for the steering mechanism, and a second mounting slot for the steering mechanism, wherein: The mounting holes on the lifting head beam are used to install the lifting head beam. The first mounting slot of the steering mechanism is used to install the first thrust bearing for rotation. The second mounting slot of the steering mechanism is used to install the rotating second thrust bearing.

[0015] As a preferred embodiment, the system also includes a load-bearing bearing mounting platform for mounting the crane head load-bearing thrust bearing; an anti-slip load-bearing plate is provided above the crane head load-bearing thrust bearing.

[0016] As a preferred embodiment, the anti-slip bearing plate mounting groove is used to install the anti-slip bearing plate.

[0017] As a preferred embodiment, the lifting head mounting lug is hinged to the end of the boom.

[0018] As a preferred embodiment, the adjustable passenger frame device further includes a cantilever device and a counterweight frame. The counterweight frame and the passenger frame are connected by the cantilever device, and the cantilever device is connected to the end wheel of the wire rope.

[0019] As a preferred embodiment, the cantilever device includes a first main cantilever rod and a second main cantilever rod. The first main cantilever rod and the second main cantilever rod are connected by a connecting hinge seat, and the connecting hinge seat is connected to one end of the opening and closing hydraulic rod, while the other end of the opening and closing hydraulic rod is hinged to the first connecting rod and the second connecting rod. The first connecting rod is hinged to the middle of the first main cantilever rod; The second connecting rod is hinged to the middle of the second main cantilever rod; As a preferred embodiment, the cantilever device further includes a hinge connecting shaft and a connecting sleeve. The connecting hinge is connected to the wire rope end mounting wheel through the hinge connecting shaft, and the connecting sleeve is used to connect the first main cantilever rod to the manned frame and the second main cantilever rod to the counterweight frame.

[0020] As a preferred embodiment, the end of the first main cantilever is connected to the passenger frame via a connecting sleeve; the end of the second main cantilever is connected to the counterweight frame via a connecting sleeve.

[0021] As a preferred embodiment, the connecting hinge is connected to the wire rope end mounting wheel via a hinge connecting shaft.

[0022] A method for operating a personnel suspension system for an arc-shaped gate in a hydropower station includes the following steps: S1. Hoist the two suspension systems onto the support rails of the left and right arms of the arc gate respectively, complete the rail positioning, locking and limit confirmation respectively, and suspend the corresponding personnel frame device according to the maintenance conditions of the arc gate. When there is an embedded area or bottom maintenance condition, the suspended adjustable man-carrying frame is used to control the movement of the cantilever device, so that the man-carrying frame and the counterweight frame are in a closed and fitted state, and the initial state adjustment is completed. When the above-mentioned maintenance conditions are not present, the personnel carrier can be directly suspended. S2. Start the suspension rope control mechanism and adjust the amount of the two suspension ropes to adjust the overall levelness of the system based on the horizontal posture feedback. S3. Adjust the boom posture and the height of the personnel carrier, move the personnel carrier to the boarding position, and the operator enters the personnel carrier; S4. Based on the location of the target maintenance work area, adjust the boom extension, crane head beam rotation angle and cantilever device opening and closing degree in combination to make the personnel frame fit into the target maintenance area. S5. When workers carry out maintenance work, the fall protection mechanism is activated throughout the entire process. S6. After the maintenance is completed, retract the cantilever device, lift the personnel carrier, reset the boom and the lifting beam in sequence, and then withdraw the system from the site after resetting it to its initial state.

[0023] In step S1, the two suspension systems are installed on the support rails of the left and right arc-shaped gate arms, respectively. Each suspension system moves, positions and locks independently on the corresponding support rail through a movable base, rail locking mechanism and limit detection device. The lifting and attitude adjustment are performed by independent hoisting rope control mechanism, boom and hoisting beam, so that the two suspension systems can operate independently on the same arc-shaped gate and avoid mechanical interference.

[0024] In step S2, the hoisting rope control mechanism uses two independent wire rope winding and unwinding drive devices. The two independent wire rope winding and unwinding drive devices correspond to two wire ropes respectively, supporting two modes: single rope independent adjustment and dual rope linkage control. The system's horizontal attitude is automatically or manually corrected based on the level instrument's detection data.

[0025] In step S4, for the area above the waistline of the arc-shaped gate's water-facing surface, the personnel carrier can be moved forward and backward by adjusting the boom's pitch and extension, and the height can be adjusted by raising and lowering the hoisting rope, so that the personnel carrier can be moved to fit the surface above the waistline of the arc-shaped gate's water-facing surface for operation and coverage. For the area below the waistline of the water-facing surface, the boom remains in a fixed position, and the personnel carrier can be moved forward and backward by opening and closing the cantilever device, and the height can be adjusted by raising and lowering the hoisting rope, so as to achieve operation and coverage of the area below the waistline of the arc-shaped gate's water-facing surface or the entire area.

[0026] In step S4, for the backwater surface beam grid and panel area of ​​the arc gate, first rotate the main base to adjust the azimuth angle, and then adjust the personnel frame forward and backward by tilting the boom and adjusting the height with the hoisting rope to move the personnel frame to fit the backwater surface of the arc gate for full operation coverage. For the support arm and hinge area, after rotating the main base to align with the azimuth, rotate the boom beam through the position adjustment device of the boom beam to adjust the angle and posture of the personnel frame so that it fits the side elevation of the support arm or the side working area of ​​the hinge. Then, the opening and closing of the cantilever device moves the personnel frame horizontally, and the height is adjusted with the hoisting rope to achieve operation coverage of the bottom area of ​​the support arm or hinge.

[0027] In step S5, the operator attaches the safety belt to the suspension point of the fall brake. In the event of an abnormal fall, the fall brake will be activated immediately. In step S6, the cantilever device is first retracted to make the personnel frame and the counterweight frame fit together and close together. Then the rope is pulled up to lift the personnel frame. Subsequently, the boom is retracted and the azimuth angle of the main base is reset. After the track lock is released, the system withdrawal is completed.

[0028] The present invention can achieve the following beneficial effects: 1. This invention, by setting a lifting head beam on the boom and using a position adjustment device (including a drive motor, a drive gear and a driven gear) to control the rotation of the lifting head beam relative to the lifting head support, can adjust the orientation angle of the personnel frame according to the on-site maintenance needs, thereby achieving the avoidance of internal components of the arc gate and the maintenance needs of the equipment side facade.

[0029] 2. The opening and closing of the cantilever device drives the personnel carrier frame to move horizontally. With the lifting and lowering of the hoisting rope, the height can be adjusted to achieve a close fit to the curved surface of the arc gate. This ensures that the frame maintains a preset safe distance from the gate surface during lifting and moving, avoiding collisions and improving the flexibility and fit of maintenance operations.

[0030] 3. To address the issue of wire rope threading, this invention incorporates symmetrically arranged L-shaped channels inside the lifting head beam and installs wire rope guide wheels at the corners. This design allows the wire rope to smoothly pass through the lifting head beam, effectively reducing friction and wear between the wire rope and the metal structure, lowering operating resistance, and thus extending the service life of the wire rope and the entire suspension device.

[0031] 4. The crane head support base adopts a modular design, integrating the crane head mounting lugs and the crane head functional housing. The housing has dedicated mounting holes and slots (such as the steering mechanism mounting slot), ensuring precise and compact installation of the drive motor, gear set, and bearings. Simultaneously, the anti-axial movement design of the support plate effectively prevents axial movement of components, ensuring the long-term reliability of the equipment and facilitating disassembly and maintenance.

[0032] 5. The lifting head beam with an inverted T-shaped structure is combined with the lifting head support with a hollow cylindrical structure. The rotational connection is achieved through three sets of thrust bearings, resulting in strong overall load-bearing capacity. During rotation, the force is evenly distributed and the operation is stable, which can prevent the personnel carrier from swaying at high altitudes and provide a safe and stable working environment for maintenance personnel.

[0033] 6. The layout of two suspension systems is adopted, which are placed on the left and right arms of the arc gate. The two systems are independently positioned and locked through movable base, track locking mechanism and limit detection device, respectively. The lifting and attitude adjustment are completed through independent hoisting rope control mechanism, boom and hoisting beam, which can reduce the risk of mechanical interference when the two systems are running at the same time.

[0034] 7. Differentiated adjustment strategies are adopted for different areas of the arc-shaped gate based on their structural characteristics: the area above the waistline on the water-facing side is fitted by the extension and retraction of the boom, while the area below the waistline is addressed by the opening and closing of the cantilever device in conjunction with the height adjustment of the hoisting rope, thus solving the accessibility problem of the lower part of the arc-shaped surface; the beam grid, support arm and hinge area on the backwater side are adapted to various working surfaces such as plane, side elevation and bottom by combining the rotation of the main base, the adjustment of the boom posture and the adjustment of the hoisting head beam, which helps to eliminate narrow structural blind spots that are difficult to reach by traditional hoisting baskets, and realize multi-area maintenance coverage of the gate.

[0035] 8. The hoisting rope control mechanism supports both single-rope independent adjustment and dual-rope linkage control modes. It can automatically correct the system's levelness by combining horizontal posture detection data, effectively preventing tilting and swaying of the personnel carrier during lifting and shifting, and providing a stable high-altitude working environment for operators. At the same time, it can flexibly adapt to the posture fine-tuning needs under different working conditions, improving the accuracy of the personnel carrier's alignment and fit. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural diagram of the present invention in Example 1; Figure 2 This is a structural diagram of the connection between the lifting beam and the passenger frame in Embodiment 1 of the present invention; Figure 3 This is a sectional view of the lifting beam of the present invention in Example 1; Figure 4 This is a structural diagram of the lifting head beam of the present invention in Example 1; Figure 5 This is a structural diagram of the lifting head support of the present invention in Example 1; Figure 6 This is a structural diagram of the manned frame form of the present invention in Embodiment 1; Figure 7 This is an application scenario diagram of the device in Example 1; Figure 8This is a structural diagram of the counterweight frame of the present invention in Example 2; Figure 9 This is an assembly diagram of the manned frame, cantilever device, and counterweight frame of the present invention in Embodiment 2; Figure 10 This is a structural diagram of the present invention in Example 2; Figure 11 This is a schematic diagram (front view) of the operating principle of a manned frame suspension system for an arc gate in a hydropower station in Example 3. Figure 12 This is a 3D diagram illustrating the operating principle of a manned frame suspension system for an arc-shaped gate in a hydropower station, as shown in Example 3.

[0037] In the diagram: 0-Dam; 01-Flood discharge channel; 02-Arch-shaped gate; 02-1-Backwater side of arc-shaped gate; 02-2-Arch-shaped gate support arm; 02-3-Arch-shaped gate hinge; 02-4-Upwater side of arc-shaped gate; 03-Gantry crane; 6-Crane device; 20-Movable base; 40-Main rotating base; 60-Boom; 18. Lifting head beam, 180. Lifting head support seat, 181. Lifting head crossbeam, 182. Rotating main drive motor, 183. Rotating drive gear, 184. Rotating driven gear, 185. Lifting head load-bearing thrust bearing, 186. Rotating first thrust bearing, 187. Rotating second thrust bearing, 188. Anti-slip load-bearing plate, 189. Wire rope guide wheel; Lifting head mounting ear plate 180-1, lifting head functional box 180-2, lifting head mounting hole 180-1-1, lifting head crossbeam shaft mounting hole 180-2-1, load-bearing bearing mounting platform 180-2-2, steering mechanism first mounting groove 180-2-3, steering mechanism second mounting groove 180-2-4, rotating drive gear mounting shaft through hole 180-2-5, rotating drive gear mounting shaft blind hole 180-2-6, crossbeam mounting shaft 181-1, Crossbeam; 181-2, Crossbeam mounting shaft wire rope clearance through hole; 181-1-1, Anti-slip bearing plate mounting groove; 181-1-2, Crossbeam mounting shaft keyway; 181-1-3, Guide wheel mounting hole; 181-2-1, Guide wheel clearance space; 181-2-2, Crossbeam wire rope clearance through hole; 181-2-3, Crossbeam guide wheel clearance groove; 181-2-4, End wire rope guide wheel mounting hole; 181-2-5; Passenger frame 196; base frame 196-1, kickboard 196-2, protective fence 196-3, passenger frame load-bearing plate 196-4, passenger frame mounting shaft 196-5; The system includes a wire rope 190, a wire rope winding and unwinding drive device 191, a drum 192, a wire rope guide wheel 193, a wire rope load-bearing wheel 194, and a wire rope end mounting wheel 195. The wire rope winding and unwinding drive device 191 and the drum 192 can be installed in pairs to control two wire ropes 190 respectively.

[0038] Cantilever device 197: hinge connecting shaft 197-1, connecting hinge 197-2, opening and closing hydraulic rod 197-3, first main cantilever rod 197-4, second main cantilever rod 197-5, first connecting rod 197-6, second connecting rod 197-7, connecting sleeve 197-8; Counterweight frame 198: Counterweight frame 198-1, counterweight frame load-bearing plate 198-2, counterweight frame mounting shaft 198-3. Detailed Implementation

[0039] Example 1: Preferred solutions include Figure 1 , 9 As shown, a suspension system and operation method for a personnel carrier frame of an arc gate in a hydropower station includes a crane device. The crane device includes a movable base 20, a main rotating base 40, a boom 60, and a rope control mechanism. A lifting head beam 18 is installed on the boom 60. The lifting head beam 18 includes a lifting head support 180 and a lifting head crossbeam 181. The lifting head crossbeam 181 is rotatably engaged with the lifting head support 180, and the lifting head crossbeam 181 is provided with a channel for the lifting rope to pass through. The relative position between the lifting head crossbeam 181 and the lifting head support 180 is adjusted by a position adjustment device. One end of the lifting rope is installed on the rope control mechanism, and the other end is connected to the personnel carrier frame 196.

[0040] like Figure 8 As shown, the crane device in this embodiment can adopt existing mature crane equipment, and the crane device is installed on the track. The hoisting rope control mechanism includes two independent wire rope winding and unwinding drive devices 191 on the left and right, and corresponding drums 192. Each wire rope winding and unwinding drive device 191 is installed at a corresponding position on the main rotating base 40 and is connected to a wire rope 190. The two wire ropes 190 pass through the wire rope guide wheel 193, the wire rope load-bearing wheel 194 installed at the front end of the boom 60, and the L-shaped channel inside the lifting head beam 181, before connecting to the corresponding wire rope end mounting wheel 195. The two sets of wire rope winding and unwinding drive devices 191 can receive independent winding and unwinding commands or synchronous linkage commands. In the single-rope independent control mode, either wire rope winding and unwinding drive device 191 can independently adjust the winding and unwinding amount of the corresponding wire rope 190. In the dual-rope linkage control mode, the two sets of wire rope winding and unwinding drive devices 191 can wind and unwind synchronously at the same or preset ratio to realize the lifting and lowering of the manned frame 196 and the horizontal posture correction.

[0041] The position adjustment device includes a main drive motor 182, which drives a drive gear 183 to rotate. The drive gear 183 meshes with a driven gear 184, which is connected to the lifting head beam 181. The position adjustment device is used to adjust the orientation of the lifting head beam 181. Specifically, in this embodiment, the lifting head beam 181 has an inverted T-shaped structure, and the lifting head support 180 has a hollow cylindrical structure.

[0042] The core components of this device include the following: 1. Suspended beam 18, such as Figures 2 to 5 As shown, the crane is installed on the boom and mainly consists of a crane head support 180, a crane head beam 181, a main drive motor 182, a drive gear 183, a driven gear 184, a crane head thrust bearing 185, a first thrust bearing 186, a second thrust bearing 187, an anti-slip bearing plate 188, and a wire rope guide wheel 189. Specifically, the lifting head support 180 is a cylindrical box structure, consisting of a lifting head mounting ear plate 180-1 and a lifting head functional box 180-2. The lifting head mounting ear plate 180-1 has a lifting head mounting hole 180-1-1 for mounting at the front end of the boom 60, ensuring reliable installation of the lifting head support 180 on the boom 60. The lifting head functional box 180-2 has a lifting head crossbeam shaft mounting hole 180-2-1 in the middle of the upper and lower box plates, supporting... The components include a heavy bearing mounting platform 180-2-2, a first mounting groove for the steering mechanism 180-2-3, a second mounting groove for the steering mechanism 180-2-4, a through hole for the rotating drive gear mounting shaft 180-2-5, and a blind hole for the rotating drive gear mounting shaft 180-2-6; the lifting head crossbeam 181 has an overall inverted T-shaped structure, mainly composed of a crossbeam mounting shaft 181-1 and a crossbeam 181-2, with a through hole 181-2 inside the crossbeam mounting shaft 181-1 to allow clearance for the crossbeam mounting shaft wire rope. 1-1, Anti-slip bearing plate mounting groove 181-1-2 and crossbeam mounting shaft keyway 181-1-3, the crossbeam 181-2 has guide wheel mounting hole 181-2-1, guide wheel clearance space 181-2-2, crossbeam wire rope clearance through hole 181-2-3, crossbeam guide wheel clearance groove 181-2-4 and end wire rope guide wheel mounting hole 181-2-5; First, rotate the drive gear 183, rotate the driven gear 184, and rotate the first thrust. Bearing 186 and rotating second thrust bearing 187 are installed in an orderly manner into the lifting head functional housing 180-2. Then, the beam mounting shaft 181-1 of the lifting head beam 181 passes through the beam shaft mounting hole 180-2-1 and the lifting head load-bearing thrust bearing 185 and is fixed by the anti-slip load-bearing plate 188, so that the lifting head load-bearing seat 180 and the lifting head beam 181 are safely and reliably connected. Then, the rotating main drive motor 182 is installed at the corresponding position in the lifting head functional housing 180-2.

[0043] 2. For example Figure 6 , 7 As shown, the passenger frame 196 includes at least two styles: The passenger frame 196 is the main passenger-carrying functional component of this invention, providing standing and riding space for maintenance personnel. It mainly consists of a base frame 196-1, a kickboard 196-2, a protective fence 196-3, a passenger frame load-bearing plate 196-4, and a passenger frame mounting shaft 196-5. Specifically, the upper section of the passenger frame load-bearing plate 196-4 is provided with a clearance groove for the wire rope end mounting wheel 195. The passenger frame 196 is connected to the wire rope end mounting wheel 195 through the passenger frame mounting shaft 196-5 to ensure the safety of the passenger frame connection.

[0044] Example 2: The following improvements were made based on Example 1: The system also includes a cantilever device 197 and a counterweight frame 198. The counterweight frame 198 is connected to the personnel frame 196 via the cantilever device 197, and the cantilever device 197 is connected to the wire rope end mounting wheel 195.

[0045] Furthermore, the cantilever device 197 includes a first main cantilever rod 197-4 and a second main cantilever rod 197-5. The first main cantilever rod 197-4 and the second main cantilever rod 197-5 are connected by a connecting hinge 197-2. The connecting hinge 197-2 is connected to one end of the opening and closing hydraulic rod 197-3, and the other end of the opening and closing hydraulic rod 197-3 is hinged to the first connecting rod 197-6 and the second connecting rod 197-7. The first connecting rod 197-6 is hinged to the middle of the first main cantilever rod 197-4; The second connecting rod 197-7 is hinged to the middle of the second main cantilever rod 197-5.

[0046] The cantilever device 197 also includes a hinge connecting shaft 197-1 and a connecting sleeve 197-8. The connecting hinge 197-2 is connected to the wire rope end mounting wheel 195 through the hinge connecting shaft 197-1. The connecting sleeve 197-8 is used to connect the first main cantilever rod 197-4 to the passenger frame 196 and the second main cantilever rod 197-5 to the counterweight frame 198.

[0047] Furthermore, the end of the first main cantilever 197-4 is connected to the passenger frame 196 via a connecting sleeve 197-8; the end of the second main cantilever 197-5 is connected to the counterweight frame 198 via a connecting sleeve 197-8.

[0048] Furthermore, the connecting hinge 197-2 is connected to the wire rope end mounting wheel 195 via the hinge connecting shaft 197-1.

[0049] The cantilever device 197 provides an extended support point for locations that cannot be reached in the embedded cantilever condition, ensuring that the personnel frame 196 can effectively reach the location that needs maintenance. The specific structure is mainly composed of a hinge connecting shaft 197-1, a connecting hinge 197-2, an opening and closing hydraulic rod 197-3, a first main cantilever rod 197-4, a second main cantilever rod 197-5, a first connecting rod 197-6, a second connecting rod 197-7, and a connecting sleeve 197-8. Specifically, the connecting hinge 197-2 is connected to the wire rope end mounting wheel 195 via the hinge connecting shaft 197-1. The upper ends of the first main cantilever 197-4 and the second main cantilever 197-5 are both connected to the connecting hinge 197-2. The lower end of the first main cantilever 197-4 is connected to the personnel frame 196 via the connecting sleeve 197-8. The lower end of the second main cantilever 197-5 is connected to the counterweight frame 198 via the connecting sleeve 197-8. The opening and closing of the cantilever device 197 is achieved by the extension and retraction of the opening and closing hydraulic rod 197-3, thereby realizing the extension and retrieval of the personnel frame 196.

[0050] The specific structure of the counterweight frame 198 is as follows: The counterweight frame 198 is the main counterweight balancing device of this invention. It is connected to the lower end of the second main cantilever rod 197-5 through the connecting sleeve 197-8, and the internal structure can be adapted to accommodate corresponding counterweight blocks according to the passenger load. The counterweight frame 198 mainly consists of a counterweight frame 198-1, a counterweight frame load-bearing plate 198-2, and a counterweight frame mounting shaft 198-3.

[0051] Example 3: Based on the embodiments, the present invention provides an operation method for a personnel suspension system of an arc gate in a hydropower station, the steps of which are as follows: S1: Installation of the passenger-carrying frame suspension system: Two manned frame suspension system devices of the present invention are respectively hoisted onto the support rails of the left and right arc-shaped gate arms 02-2, respectively completing the positioning, limit confirmation, and locking of the movable base 20 on the corresponding support rails; the two suspension systems are raised, lowered, and adjusted in attitude by independent hoisting rope control mechanisms, booms 60, and lifting beams 18, respectively, and operate independently on the same arc-shaped gate to avoid mechanical interference. The support rails are used to carry the movable base 20 along the arc-shaped gate arms 02-2; the fall brake is used to provide braking protection in abnormal fall conditions; the anti-derailment rail clamping device is used to keep the movable base 20 locked to the support rail.

[0052] S2: Adjust the initial functional state of the man-carrying frame and the counterweight frame: Ensure that the man-carrying frame 196 and the counterweight frame 198 are in a close fit through the cantilever device 197, reduce the area affected by the frame mechanism body, and facilitate use in confined spaces; S3: Horizontal attitude adjustment of the device: According to the level instrument installed on the device, the two independent wire rope winding and unwinding drive devices 191 on the left and right can be started automatically or manually to wind and unwind their respective wire ropes 190 to ensure that the device is in a horizontal attitude. S4: Personnel on the personnel frame: Start the boom 60 rotation and the wire rope winding and unwinding drive device 191 to wind and unwind the wire rope 190, and adjust the personnel frame 196 to a position that is convenient for maintenance personnel to get in and out, ensuring that maintenance personnel can safely enter the personnel frame 196. S5: Adjustment of the device's attitude on the water-facing side: 1) Confirmation and adjustment of the personnel carrier's hovering position: Determine the position of the device's boom based on the work surface, start the boom to rotate it to the position that needs to be inspected, and then stop swinging to provide a reliable hovering support point for the personnel carrier; 2) Adjustment of working posture in the area above the waistline: Start the boom to extend and retract so that the personnel frame 196 can fit against the arc gate, making it convenient for workers to approach and carry out maintenance work; 3) Adjustment of working posture in the area below the waistline: Keep the boom stationary, start the cantilever device 197 to open and close, drive the personnel frame 196 to move back and forth in the horizontal position, and then use the wire rope winding and releasing drive device 191 to wind and release the wire rope 190 to achieve effective accessibility of the personnel frame 196 in the arc-shaped area below the waistline, ensuring that the workers can access the entire maintenance area. S6: Adjustment of the device's attitude on the backwater side: Drive the main rotating base 40 to rotate around the vertical axis to the target azimuth angle, aligning it with the projected position of the front and rear inspection areas. The front and rear inspection areas mainly include the front inspection area and the rear inspection area. The front inspection area includes the beam grid and panel of the backwater side 02-1 of the arc gate and the area around the front part of the arc gate support arm 02-2. The rear inspection area includes the area around the arc gate hinge 02-3 and the area around the rear part of the arc gate support arm 02-2. 1) For the maintenance of the back water surface 02-1 of the arc gate, drive the main rotating base 40 to rotate around the vertical axis to the target position of the area to be inspected in front, adjust the pitch attitude of the boom 60 to above the position to be inspected and then stop the operation to provide a reliable suspension support point for the personnel frame, start the boom 60 to perform the extension and retraction operation so that the personnel frame 196 can fit against the beam grid position of the back water surface 02-1 of the arc gate, so that the operators can approach and carry out maintenance work. 2) For the maintenance of the arc gate arm 02-2, since the device moves on the arm, it involves the front and rear inspection areas. Drive the main rotating base 40 to rotate around the vertical axis to the target area position. Adjust the boom 60 to the pitch position above the position to be inspected and then stop the operation to provide a reliable suspension support point for the personnel frame. Start the crane beam 18 to adjust the posture of the personnel frame 196 so that the personnel frame 196 can fit against the side of the arm 02-2. Then start the opening and closing of the cantilever device 197 to move the personnel frame 196 back and forth to the bottom position, so that the operators can approach to carry out maintenance work. 3) For the maintenance of the arc gate hinge 02-3, drive the main rotating base 40 to rotate around the vertical axis to the target position of the rear inspection area, adjust the pitch attitude of the boom 60 to above the position to be inspected and then stop the operation to provide a reliable suspension support point for the personnel frame. Start the crane beam 18 to adjust the attitude of the personnel frame 196 so that the personnel frame 196 can fit against the side elevation of the arc gate hinge 02-3. Then start the opening and closing of the cantilever device 197 to move the personnel frame 196 back and forth to the bottom position, so that the operators can approach to carry out maintenance work. S7: When workers are wearing safety belts and suspended at the lower end of the fall brake, and are carrying out maintenance work such as bolt tightening, non-destructive testing or anti-corrosion within the personnel frame 196, the fall protection system is in standby mode throughout the entire process. Once an abnormal fall occurs, the braking protection will be triggered. S8: After maintenance, the personnel frame 196 and counterweight frame 198 are retrieved through the hoisting rope control mechanism, the boom 60 is retrieved, the boom pitch angle is reset, the main rotating base 40 is rotated to the initial azimuth angle, and the device is reset; the anti-derailment rail clamp is released from its locking state, the entire device is hoisted out of the installation position and transported to the storage warehouse.

[0053] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A suspension system for a personnel carrier frame of an arc-shaped gate in a hydropower station, comprising a crane device, a lifting beam, and a personnel carrier frame device, wherein the crane device includes a movable base, a boom, and a rope control mechanism, characterized in that: The movable base is installed on the arc-shaped gate support arm; a lifting beam (18) is installed on the lifting arm. The lifting beam (18) includes a lifting head support (180) and a lifting head crossbeam (181). The lifting head crossbeam (181) is rotatably engaged with the lifting head support (180), and the lifting head crossbeam (181) is provided with a channel for the lifting rope to be threaded through. The relative position between the lifting head beam (181) and the lifting head support (180) is adjusted by a position adjustment device; The hoisting rope control mechanism is used to control the movement of the hoisting rope; One end of the hoisting rope is installed on the hoisting rope control mechanism, and the other end is connected to the personnel carrying frame device.

2. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 1, characterized in that: The position adjustment device includes a rotating main drive motor (182), which drives the rotating active gear (183) to rotate. The rotating active gear (183) meshes with the rotating driven gear (184), and the rotating driven gear (184) is connected to the lifting head beam (181).

3. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 2, characterized in that: The lifting head beam (181) is an inverted T-shaped structure, and the lifting head support (180) is a hollow cylindrical structure; The upper, middle and lower sides of the lifting beam (181) are respectively equipped with a lifting head load-bearing thrust bearing (185), a first rotating thrust bearing (186) and a second rotating thrust bearing (187). The lifting beam (181) rotates with the lifting head load-bearing seat (180) through the lifting head load-bearing thrust bearing (185), the first rotating thrust bearing (186) and the second rotating thrust bearing (187).

4. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 3, characterized in that: The lifting beam (181) has two symmetrically arranged L-shaped channels inside, and multiple wire rope guide wheels (189) are provided in the L-shaped channels, of which at least one wire rope guide wheel (189) is installed at the corner of the L-shaped channel.

5. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 1, characterized in that: The top of the manned frame device is equipped with a wire rope end mounting wheel (195), which is used to connect with the suspension rope, which is a wire rope.

6. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 1, characterized in that: The lifting head support (180) also includes a lifting head mounting ear plate (180-1) and a lifting head functional box (180-2), with the lifting head mounting ear plate (180-1) installed on top of the lifting head functional box (180-2).

7. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 6, characterized in that: The lifting head functional housing (180-2) is provided with a lifting head crossbeam shaft mounting hole (180-2-1), a first mounting slot for the steering mechanism (180-2-3), and a second mounting slot for the steering mechanism (180-2-4), wherein: The lifting head beam shaft mounting hole (180-2-1) is used to install the lifting head beam (181); The first mounting slot (180-2-3) of the steering mechanism is used to install the first thrust bearing (186) for rotation. The second mounting slot (180-2-4) of the steering mechanism is used to install the rotating second thrust bearing (187).

8. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 7, characterized in that: It also includes a load-bearing bearing mounting platform (180-2-2), which is used to install the crane head load-bearing thrust bearing (185); an anti-slip load-bearing plate (188) is provided above the crane head load-bearing thrust bearing (185).

9. A suspension system for a manned frame of an arc-shaped gate in a hydropower station according to claim 8, characterized in that: Anti-slip load-bearing plate mounting slot (181-1-2) is used to install the anti-slip load-bearing plate (188).

10. A suspension system for a manned frame of an arc-shaped gate in a hydropower station according to claim 6, characterized in that: The lifting head mounting lug (180-1) is hinged to the end of the boom.

11. The suspension system for the manned frame of an arc-shaped gate in a hydropower station according to claim 1, characterized in that: The manned frame device includes a manned frame (196) and an adjustable manned frame device. The adjustable manned frame device includes a cantilever device (197) and a counterweight frame (198). The counterweight frame (198) is connected to the manned frame (196) through the cantilever device (197), and the cantilever device (197) is connected to the wire rope end mounting wheel (195).

12. A suspension system for a manned frame of an arc-shaped gate in a hydropower station according to claim 11, characterized in that: The cantilever device (197) includes a first main cantilever rod (197-4) and a second main cantilever rod (197-5). The first main cantilever rod (197-4) and the second main cantilever rod (197-5) are connected by a connecting hinge (197-2). The connecting hinge (197-2) is connected to one end of an opening and closing hydraulic rod (197-3). The other end of the opening and closing hydraulic rod (197-3) is hinged to a first connecting rod (197-6) and a second connecting rod (197-7). The first connecting rod (197-6) is hinged to the first main cantilever rod (197-4) at the middle; The second connecting rod (197-7) is hinged to the middle of the second main cantilever rod (197-5); The cantilever device (197) also includes a hinge connecting shaft (197-1) and a connecting sleeve (197-8). The connecting hinge (197-2) is connected to the wire rope end mounting wheel (195) through the hinge connecting shaft (197-1). The connecting sleeve (197-8) is used to connect the first main cantilever rod (197-4) to the man-carrying frame (196) and the second main cantilever rod (197-5) to the counterweight frame (198).

13. A suspension system for a manned frame of an arc-shaped gate in a hydropower station according to claim 12, characterized in that: The end of the first main cantilever (197-4) is connected to the man-carrying frame (196) via a connecting sleeve (197-8); the end of the second main cantilever (197-5) is connected to the counterweight frame (198) via a connecting sleeve (197-8).

14. A suspension system for a manned frame of an arc-shaped gate in a hydropower station according to claim 12, characterized in that: The connecting hinge (197-2) is connected to the wire rope end mounting wheel (195) via the hinge connecting shaft (197-1).

15. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to any one of claims 1-14, characterized in that, Includes the following steps: S1. Hoist the two suspension systems onto the support rails of the left and right arms of the arc-shaped gate, respectively, and complete the rail positioning, locking, and limit confirmation. Then, suspend the corresponding personnel carrier device according to the maintenance conditions of the arc-shaped gate. (1) When there is an embedded area or bottom maintenance condition, the suspender frame (196) with adjustable suspender frame device is suspended, and the cantilever device (197) is controlled to move so that the suspender frame (196) and the counterweight frame (198) are in a closed and fitted state, and the initial state adjustment is completed. (2) When there is no maintenance work as described above, the manned frame (196) can be suspended directly; S2. Start the suspension rope control mechanism and adjust the amount of the two suspension ropes to adjust the overall levelness of the system based on the horizontal posture feedback. S3. Adjust the boom posture and the height of the personnel frame, and move the personnel frame (196) to the boarding position. The operator enters the personnel frame (196). S4. Based on the location of the target maintenance work area, adjust the boom extension, the head beam rotation angle and the cantilever device opening and closing degree in combination to make the personnel frame (196) fit into the target maintenance area. S5. When workers carry out maintenance work, the fall protection mechanism is activated throughout the entire process. S6. After the maintenance is completed, retract the cantilever device, lift the personnel carrier, reset the boom and the lifting beam in sequence, and then withdraw the system from the site after resetting it to its initial state.

16. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to claim 15, characterized in that: In step S1, the two suspension systems are installed on the support rails of the left and right arc gate arms (02-2), respectively. Each suspension system moves, positions and locks independently on the corresponding support rail through a movable base, rail locking mechanism and limit detection device. It also performs lifting and attitude adjustment through independent hoisting rope control mechanism, boom (60) and hoisting beam (18), so that the two suspension systems can operate independently on the same arc gate and avoid mechanical interference.

17. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to claim 15, characterized in that: In step S2, the hoisting rope control mechanism uses two independent wire rope winding and unwinding drive devices (191). The two independent wire rope winding and unwinding drive devices (191) correspond to two wire ropes (190) respectively, supporting two modes: single rope independent adjustment and double rope linkage control. The system's horizontal attitude is automatically or manually corrected according to the detection data of the level instrument.

18. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to claim 15, characterized in that: In step S4, for the area above the waistline of the arc-shaped gate's water-facing surface, the personnel frame can be moved forward and backward by adjusting the boom's pitch and extension, and the height can be adjusted by raising and lowering the hoisting rope, so that the personnel frame (196) can be moved to fit the surface above the waistline of the arc-shaped gate's water-facing surface for operation and coverage. For the area below the waistline of the water-facing surface, the boom is kept in a fixed position, and the personnel frame (196) is moved forward and backward by opening and closing the cantilever device (197), and the height can be adjusted by raising and lowering the hoisting rope, so as to achieve operation and coverage of the area below the waistline of the arc-shaped gate's water-facing surface or the entire area.

19. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to claim 15, characterized in that: In step S4, for the backwater beam grid and panel area of ​​the arc gate, first rotate the main base to adjust the azimuth angle, and then adjust the personnel frame forward and backward by tilting the boom and adjusting the height with the hoisting rope, so that the personnel frame (196) can fit the backwater area of ​​the arc gate for full operation coverage; for the support arm and hinge area, after rotating the main base to align the azimuth, rotate the boom beam (181) by adjusting the position of the boom beam (18) to adjust the angle and posture of the personnel frame (196) so that it fits the side of the support arm or the side of the hinge for operation. Then, the opening and closing of the cantilever device (197) drives the personnel frame (196) to move horizontally, and adjust the height with the hoisting rope to achieve operation coverage of the bottom area of ​​the support arm or hinge.

20. The operation method of the personnel suspension system for the arc-shaped gate of a hydropower station according to claim 15, characterized in that: In step S5, the operator attaches the safety belt to the suspension point of the fall brake. In case of an abnormal fall, the fall brake is triggered immediately. In step S6, the cantilever device (197) is first retracted so that the personnel frame (196) and the counterweight frame (198) are close together. Then the rope is pulled up to lift the personnel frame (196). Subsequently, the boom is retracted and the azimuth angle of the main base is reset. After the track lock is released, the system is withdrawn from the site.

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