Movable overhauling platform for surface runner in hydropower station

Abstract

The invention provides a movable overhauling platform for a surface runner in a hydropower station, comprising a winch platform and an overhauling platform, wherein the winch platform comprises a moving platform, a winch arranged on the moving platform and a fixed arm vertically arranged at one end of the moving platform; the moving platform comprises a plurality of fastening devices connected with the top of a dam; the winch comprises a winch body, a balancing weight and a steel wire rope; a plurality of pulleys are arranged on the moving platform and the fixed arm; the overhualing platform comprises an overhauling trolley; the front end of the overhualing trolley is connected with the steel wire rope; a bottom overhualing stand is arranged at the bottom of the overhauling trolley; a cover plate is arranged on the bottom overhauling stand; a top overhualing stand is arranged at the top of the overhauling trolley; support wheels are arranged at one sides, close to the flood discharge runner of the hydropower station, of the bottom overhauling stand and the top overhualing stand; a plurality of roller and guide wheels are also arranged at one side, close to the flood discharge runner of the hydropower station, of the overhauling trolley; and two sides of the overhauling platform are in sliding connection with an expansion plate with adjustable width. The movable overhauling platform has the characteristics of convenience in mounting and dismounting, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of inspection and maintenance of hydropower stations, in particular to a movable inspection platform for surface channels in hydropower stations. Background technique [0002] For the surface hole and the flow surface of the stilling basin in the hydropower station, the existing maintenance plan is to build a floor-standing maintenance bent frame. Although this solution can achieve the purpose of maintenance, there are many defects: [0003] 1. The floor-to-ceiling inspection and maintenance bent area is too large. During the erection process, many problems are not conducive to erection and increase the risk of erection. It requires very precise organization to carry out maintenance after the flood season; [0004] 2. Time-consuming and labor-intensive: 25.4 tons of steel pipes are required to build a floor-standing bent frame in a single center surface hole, and the erection (removal) period is long. It tak...

AI Technical Summary

Problems solved by technology

[0003] 1. The floor-to-ceiling inspection and maintenance bent area is too large. During the erection process, many problems are not conducive to erection and increase the risk of erection. It requires very precise organization to carry out maintenance after the flood season;

[0004] 2. Time-consuming and labor-intensive: 25.4 tons of steel pipes are required to build a floor-standing bent frame in a single center surface hole, and the erection (removal) period is long. It takes ten workers 10 days on the horizontal plane, not to mention that there is a certain inclination angle on the overflow surface. What's more, the inclination angle of Xiangjiaba is as high as 51.34°, so the risk is very high. During this process, the steel pipe will slide and cause damage to the flow surface;

[0005] 2. The inclination angle of the flow surface of the middle surface hole is large, and each vertical pole needs a special base to ensure that it does not slide down, and the possibility of damage to the flow surface is high;

[0006] 3. The elevation position and width of the vertical flow surface are different. If the width of the flow surface is different, floor-type bent frames of various specifications are required to meet the actual requirements, which increases the cost. For different elevations, if the same size floor-type bent The size of the bent shelf and the floor-standing bent shelf may be too large or too small. When the size of the bent shelf is too large, it cannot be erected. If the size of the platform is too small, the distance between its periphery and the flow surface will be large, and safety cannot be guaranteed.

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