Integral Hoisting Method of Hydraulic Cylinder in Confined Space

An overall hoisting and confined space technology, which is applied in the direction of transportation and packaging, load hanging components, etc., to reduce the disassembly process, protect the equipment body, and prolong the service life
CN110316648BActive Publication Date: 2020-10-30STATE GRID CORP OF CHINA +2
10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2020-10-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an integral hoisting method for a hydraulic cylinder in limited space. The method comprises the following steps that after a unit tail water tunnel is emptied, a maintainer enters the lower part of a gate groove through a tail man door, bottom positioning frames are vertically and symmetrically arranged right under a gate and are used for supporting a gate body, and meanwhile, leakage water at a bottom space tunnel is discharged; after the gate falls down and sits on the bottom positioning frames, a hydraulic cylinder lifting head is disassembled; and an oil station isstarted, a piston rod of the hydraulic cylinder is retracted, and a hydraulic locking part is put. According to the integral hoisting method of the hydraulic cylinder in the limited space, under the condition that a special tool is not required to be manufactured, a planning scheme is precisely calculated by using existing equipment, the psychological pressure and the injury risk of the maintainerworking in the limited space for a long time can be greatly eliminated, meanwhile, the unnecessary disassembling process is omitted, an equipment body is greatly protected, and the service life of the equipment is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of fault maintenance of generating sets of hydropower stations, and in particular relates to an integral hoisting method of a hydraulic cylinder in a restricted space of a tailwater accident gate. Background technique

[0002] Each unit of Baoquan Company is equipped with a tailwater accident gate (tail gate), a total of four tailwater gates, and the four gates share a set of hydraulic system. The opening and closing of the tail gate is operated by a hydraulic hoist, with one door and one machine configuration. The hydraulic cylinder of this hydraulic hoist is 9405mm high, with a cross-sectional diameter of 590mm and a weight of 11.338t; figure 1 shown. During the overhaul of the gate system, it is necessary to use the bridge crane to hoist the hydraulic hoist and the gate separately for work. The technical difficulties encountered are as follows:

[0003] 1) The tailwater accident gate of the company is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More