Adjustable cable wall bushing

Abstract

An adjustable cable wall-piercing bushing, including a protective frame, at least two wall-piercing pipes are stacked up and down in the protective frame, and the wall-piercing pipes on the upper side include upper fixed half-pipes and upper movable half-pipes corresponding to the upper and lower sides , the upper fixed half-pipe is fixedly connected with the protective frame, the wall-piercing pipe on the lower side includes the upper and lower corresponding independent lower movable half-pipes and lower fixed half-pipes, the lower fixed half-pipe is fixedly connected with the protective frame, and the upper and lower movable upper pipes are adjacent to each other. A connecting plate is fixedly connected between the half-pipe and the lower movable half-pipe, and the connecting plate is movably plugged in the protective frame, and the connecting plate and the upper movable half-pipe and the lower movable half-pipe connected thereto form a plug-in unit. A plurality of plug-in units are movably inserted in the protective frame between the upper fixed half-pipe and the lower fixed half-pipe, and the lower movable half-pipe of the upper plug-in unit and the upper movable half-pipe of the upper plug-in unit form the middle Through the wall pipe. The protective frames at the two ends of the connecting plate are respectively fixedly connected with an upper plug board and a lower plug board correspondingly up and down.

Description

technical field [0001] The invention relates to a power supply device for mine electromechanical equipment, in particular to an adjustable cable wall-through bushing. Background technique [0002] The "Coal Mine Safety Regulations" stipulates that "the part of the cable passing through the wall should be protected by a casing." At present, the wall-piercing pipes commonly used underground are made of 3-inch steel pipes, and are fixed in the wall with cement when building the door of the tunnel chamber. Before use, the maintenance personnel need to reserve the quantity, location and spacing of the high and low voltage cables in advance, otherwise there will be uneven arrangement of the wall pipes, the number of high and low voltage cables and the wall pipes will not correspond, and the position will be reversed. [0003] After the cable enters the casing, it needs to be blocked with yellow mud. Once the cable needs to be adjusted if there is a change, the maintenance personne...

AI Technical Summary

Problems solved by technology

[0003] After the cable enters the casing, it needs to be blocked with yellow mud. Once the cable needs to be adjusted if there is a change, the maintenance personnel need to smash the wall to remove the yellow mud to mobilize the cable. For cables with a long length , when the cable is lapped, the whole process will be extremely time-consuming and laborious, and the work efficiency will be low

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