A construction and maintenance platform for a vertical shaft of a pumped storage power station

Abstract

The application discloses a vertical shaft construction and maintenance platform for pumped storage power station, which comprises a base (1) arranged outside the vertical shaft, a supporting rod (2) arranged on the base (1), a ring-shaped guide column (3) with a shape matched with the vertical shaft arranged on the upper end of the supporting rod (2), a support (4) arranged in the middle of the ring-shaped guide column (3), a guide steel pipe (5) arranged on the end of the support (4), a cable (6) arranged in the middle of the support (4), and a cage (7) arranged on the lower end of the cable (6). The cage (7) comprises a lifting lug (8) connected with the cable (6), a cage frame (9) arranged on the lower side of the lifting lug (8), and a guide frame (10) arranged outside the cage frame (9) and used for limiting the cage frame (9). The vertical shaft construction and maintenance platform can make the cage stably run and has good safety.

Description

Technical Field

[0001] This invention relates to a construction and maintenance platform, and more particularly to a construction and maintenance platform for a pumped storage power station shaft. Background Technology

[0002] Vertical shafts are an essential component of hydropower stations, and regular inspection and maintenance are crucial for ensuring their normal operation. Shafts serve as water intake channels, guiding water from upstream to the turbines or generator units. Through the shafts, water flows from higher to lower elevations, creating a head difference that drives the turbines to generate electricity. When the turbines generate significant heat during operation, the shafts cool them to maintain normal operating temperatures. They function as part of a cooling system, introducing cooling water to lower the temperature of the turbines and generating equipment, ensuring efficient operation. During power generation, hydropower stations produce wastewater, which can be discharged downstream or to other treatment facilities to minimize environmental impact. Furthermore, the shafts can regulate water levels; by controlling the opening and closing of the shafts, the amount of water introduced into the turbines can be adjusted, thereby controlling the hydropower station's power generation capacity and water level.

[0003] Because vertical shafts serve multiple functions and are an important component of hydropower stations, they require regular inspections to check for issues such as leaks, blockages, and corrosion. Currently, shaft maintenance typically involves lowering maintenance personnel into a hoist cage. However, shafts are not perfectly vertical; they often have a curved section. When the hoist cage is lowered into the shaft, it may not fit snugly, reducing its stability. In particular, the cage's swaying can cause maintenance tools to fall out, posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a construction and maintenance platform for the vertical shaft of a pumped storage power station. It enables stable operation of the hoist cage and ensures good safety.

[0005] The technical solution of the present invention: A construction and maintenance platform for a pumped storage power station shaft includes a base located outside the shaft, a support rod on the base, an annular guide column matching the shape of the shaft at the upper end of the support rod, a bracket in the middle of the annular guide column, a guide steel pipe at the end of the bracket, a cable in the middle of the bracket, and a cage at the lower end of the cable; the cage includes a lifting lug connected to the cable, a cage frame below the lifting lug, and a guide frame for limiting the position of the cage frame outside the cage frame.

[0006] In the aforementioned pumped storage power station shaft construction and maintenance platform, the cage frame is a circular cross-section cage frame, which includes an outer cage body, an inner cage body that can be raised and lowered, a uniformly distributed fixed seat body inside the inner cage body, a safety rope on the fixed seat body, and a uniformly distributed auxiliary clamp body outside the outer cage body.

[0007] In the aforementioned pumped storage power station shaft construction and maintenance platform, the auxiliary clamp includes a mounting frame, in which a vertically arranged lead screw is provided, and a clamp is provided on the lead screw.

[0008] In the aforementioned pumped storage power station shaft construction and maintenance platform, the clamp includes a placement plate with multiple sets of clamping slots. A fixing frame is provided on the upper side of the clamping slots, and a stop block corresponding to the clamping slot is provided in the fixing frame. An adjusting screw is provided at the upper end of the stop block.

[0009] In the aforementioned pumped storage power station shaft construction and maintenance platform, the clamping groove is a V-shaped clamping groove.

[0010] In the aforementioned pumped storage power station shaft construction and maintenance platform, a bidirectional screw is provided on the lower side of the outer cage, a movable block is provided on the bidirectional screw, a support rod is provided on the movable block, the upper end of the support rod is slidably connected to the lower end face of the inner cage, and a telescopic rod connected to the inner cage is provided on the lower end face of the inner cage.

[0011] In the aforementioned pumped storage power station shaft construction and maintenance platform, the guide frame includes telescopic wheel frames located at the top and bottom of the cage frame, and an adjustment mechanism is provided on the rear side of the telescopic wheel frame at the top of the outer cage.

[0012] In the aforementioned pumped storage power station shaft construction and maintenance platform, the telescopic wheel frame includes a wheel frame base, a guide column is provided in the wheel frame base, a spring is provided outside the guide column, a guide wheel frame is provided outside the guide column that abuts against the spring, and a universal wheel is provided in the guide wheel frame.

[0013] In the aforementioned pumped storage power station shaft construction and maintenance platform, the adjustment mechanism includes a hydraulic rod connected to the wheel frame seat, and a level is provided on one side of the hydraulic rod.

[0014] Compared with the prior art, the present invention has the following advantages: 1. This application sets the support inside the annular guide column to prevent non-workers from entering the vertical shaft, thereby reducing safety hazards. The guide steel pipe can guide and limit the cage, and play a stable role when workers enter the cage, with good reliability. 2. The inner cage of this application can move relative to the outer cage, making the cage frame more adaptable, especially for the high-height curved sections of vertical shafts, it can also play a good maintenance role. 3. This application uses a level to detect the angle of the cage and uses a hydraulic rod to drive the wheel frame seat to keep the cage in a stable and balanced state, which ensures good safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the fixture of the present invention.

[0016] The labels in the attached diagram are as follows: 1-base, 2-support rod, 3-ring guide column, 4-bracket, 5-guide steel pipe, 6-cable, 7-cage, 8-lifting lug, 9-cage frame, 10-cage frame, 11-fixed seat, 12-safety rope, 13-auxiliary clamp, 14-mounting frame, 15-lead screw, 16-clamp, 17-placement plate, 18-clamping groove, 19-stop block, 20-fixed frame, 21-adjusting screw, 22-telescopic wheel frame, 23-guide wheel frame, 24-wheel frame seat, 25-guide column, 26-spring, 27-universal wheel, 28-outer cage, 29-inner cage, 30-double-acting lead screw, 31-moving block, 32-support rod, 33-telescopic rod, 34-hydraulic rod, 35-level. Detailed Implementation

[0017] Example 1. A construction and maintenance platform for a pumped storage power station shaft, comprising the following components: Figure 1-2 As shown, the structure includes a base 1 located outside the shaft, a support rod 2 on the base 1, an annular guide post 3 matching the shape of the shaft at the upper end of the support rod 2, a bracket 4 in the middle of the annular guide post 3, a guide steel pipe 5 at the end of the bracket 4, a cable 6 in the middle of the bracket 4, and a cage 7 at the lower end of the cable 6. The cage 7 includes a lifting lug 8 connected to the cable 6, a cage frame 9 on the lower side of the lifting lug 8, and a guide frame 10 for limiting the position of the cage frame 9 outside the cage frame 9.

[0018] The cage frame 9 is a cage frame with a circular cross-section. The cage frame 9 includes an outer cage body 28, an inner cage body 29 that can be raised and lowered inside the outer cage body 28, a fixed seat 11 that is evenly distributed inside the inner cage body 29, a safety rope 12 on the fixed seat 11, and auxiliary clamps 13 that are evenly distributed outside the outer cage body 28.

[0019] The auxiliary clamp 13 includes a mounting frame 14, in which a vertically arranged lead screw 15 is provided, and a clamp 16 is provided on the lead screw 15.

[0020] The clamp 16 includes a placement plate 17, which has multiple sets of clamping slots 18. A fixing frame 20 is provided on the upper side of the clamping slots 18. The fixing frame 20 has a stop block 19 corresponding to the clamping slot 18. An adjusting screw 21 is provided on the upper end of the stop block 19.

[0021] The clamping groove 18 is a V-shaped clamping groove.

[0022] The outer cage 28 is provided with a bidirectional lead screw 30 on its lower side, a moving block 31 on the bidirectional lead screw 30, a support rod 32 on the moving block 31, the upper end of the support rod 32 is slidably connected to the lower end face of the inner cage 29, and the lower end face of the inner cage 29 is provided with a telescopic rod 33 connected to the inner cage 28.

[0023] The guide frame 10 includes telescopic wheel frames 22 located at the top and bottom of the cage frame 9, and an adjustment mechanism is provided on the rear side of the telescopic wheel frames 22 at the top of the outer cage body 28.

[0024] The telescopic wheel frame 22 includes a wheel frame seat 24, a guide post 25 is provided in the wheel frame seat 24, a spring 26 is provided outside the guide post 25, a guide wheel frame 23 is provided outside the guide post 25 and abuts against the spring 26, and a universal wheel 27 is provided in the guide wheel frame 23.

[0025] The adjustment mechanism includes a hydraulic rod 34 connected to the wheel frame seat 24, and a level 35 is provided on one side of the hydraulic rod 34.

[0026] In this application, maintenance personnel enter the cage 7 through the annular guide post. The cage 7 is provided with a limiting hole corresponding to the guide steel pipe 5, so that the cage can be kept stable when the maintenance personnel enter the cage, and the cage 7 can be prevented from shaking too much. During the downward movement of the hoist cage, the telescopic wheel frame 22 will fit against the inner wall of the shaft, and the guide frame 10 will provide stable guidance for the hoist cage 7. During maintenance, the clamp 16 can hold the maintenance tools, which can be clamped in the placement plate 17 and clamped by the abutment block 19, reducing the burden on the workers. When the hoist cage moves to the curved section of the shaft, the level can detect the levelness of the hoist cage and push the wheel frame seat 24 to move through the hydraulic rod 34 to achieve leveling of the hoist cage and improve the safety of the hoist cage. In the curved section, when maintenance personnel find that the height of the shaft wall is high, the inner cage body 29 can be raised and lowered relative to the outer cage body 28. The bidirectional screw drives the moving block to move in opposite directions, thereby causing the support rod to rotate. The support rod is slidably connected to the lower end face of the inner cage body. The inner cage body is provided with a sliding groove, and the upper end of the support rod is provided with a slider corresponding to the sliding groove. Thus, during the rotation of the support rod, the height of the inner cage body is raised, and the telescopic rod can also play a limiting connection role, which is safer and improves the maintenance effect.

Claims

1. A construction and maintenance platform for a pumped storage power station shaft, characterized in that, The system includes a base (1) located outside the shaft, a support rod (2) on the base (1), an annular guide post (3) matching the shape of the shaft at the upper end of the support rod (2), a bracket (4) in the middle of the annular guide post (3), a guide steel pipe (5) at the end of the bracket (4), a cable (6) in the middle of the bracket (4), and a cage (7) at the lower end of the cable (6); the cage (7) includes a lifting lug (8) connected to the cable (6), a cage frame (9) on the lower side of the lifting lug (8), and a guide frame (10) for limiting the cage frame (9) outside the cage frame (9); The cage frame (9) is a cage frame with a circular cross-section. The cage frame (9) includes an outer cage body (28), an inner cage body (29) that can be raised and lowered is provided inside the outer cage body (28), a fixed seat (11) evenly distributed inside the inner cage body (29), a safety rope (12) is provided on the fixed seat (11), and an auxiliary clamp (13) evenly distributed outside the outer cage body (28). The auxiliary clamp (13) includes a mounting frame (14), in which a vertically arranged lead screw (15) is provided, and a clamp (16) is provided on the lead screw (15). The fixture (16) includes a placement plate (17), which has multiple sets of clamping slots (18). A fixing frame (20) is provided on the upper side of the clamping slots (18). A stop block (19) corresponding to the clamping slot (18) is provided in the fixing frame (20). An adjusting screw (21) is provided at the upper end of the stop block (19). The clamping groove (18) is a V-shaped clamping groove; The outer cage (28) is provided with a bidirectional screw (30) on its lower side, a moving block (31) is provided on the bidirectional screw (30), a support rod (32) is provided on the moving block (31), the upper end of the support rod (32) is slidably connected to the lower end face of the inner cage (29), and the lower end face of the inner cage (29) is provided with a telescopic rod (33) connected to the inner cage (28). The guide frame (10) includes telescopic wheel frames (22) located at the top and bottom of the cage frame (9), and an adjustment mechanism is provided on the rear side of the telescopic wheel frame (22) at the top of the outer cage body (28); The telescopic wheel frame (22) includes a wheel frame seat (24), a guide post (25) is provided in the wheel frame seat (24), a spring (26) is provided outside the guide post (25), a guide wheel frame (23) is provided outside the guide post (25) and a universal wheel (27) is provided in the guide wheel frame (23). The adjustment mechanism includes a hydraulic rod (34) connected to the wheel frame seat (24). A level (35) is provided on one side of the hydraulic rod (34). When the cage moves to the curved section of the shaft, the level can detect the levelness of the cage and push the wheel frame seat (24) to move through the hydraulic rod (34) to achieve the leveling of the cage.

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