CN2251620Y - Push-and-pull device for support with inflatable device - Google Patents

Abstract

The utility model relates to a push and pull device which is designed for supporting frames with tyres in coal mine wells. The push and pull device is composed of a sealed housing, and a piston plate and a push and pull rod which are arranged in the housing. Both ends of the housing are provided with an air charging port and an air discharging port, one end of the push and pull rod is connected with the piston plate, and the other end extends out of the end part of the housing. When used, the utility model is arranged between a supporting frame and a chain plate machine, the push and pull rod is connected with the chain plate machine, and the other end of the housing is connected with the base of the supporting frame. The movement of the chain plate machine and the supporting frame in a coal mining footage is completed through the charge and the discharge. The utility model has the advantages of simple structure and convenient control.

Description

The push-pull device at fixed of band support with inflatable device

The utility model belongs to a kind of coal-cutting machinery.

Application number is to propose a kind of coal mine support support with the inner tube of a tyre in 95218181.9 the patent application document, compare with traditional support frame, this support has low cost of manufacture, and control is convenient, the stressed many advantages such as evenly of support body, but some ancillary facilities of still needing just can make it be used better.

Task of the present utility model is that this device utilizes pneumatic principle for above-mentioned band support with inflatable device provides a kind of push-pull device at fixed, finishes support frame and the chain mat machine mobile working in the coal mining drilling depth.

The utility model is achieved in that this device is made up of housing and the piston plate in the housing, the pull bar of a long and narrow sealing, and pull bar one end is connected with piston plate, and the other end stretches out the end of housing, and the two ends of housing all are equipped with inflation inlet and gas vent.

In the use, this device is placed between interior support with inflatable device of band and the chain mat machine, pull bar is connected with chain mat machine, the other end of housing and the pedestal of support frame are fixed, when need move forward chain mat machine and support frame, earlier to the end inflation that is connected with support frame, promote piston plate and chain mat machine is pushed into the new rib in the place ahead by pull bar, thereafter, bleed off the gas of the end that is connected with support and to the inflation of the end that is connected with chain mat machine, at this moment piston plate is promoted, trend away from new rib is arranged, but because this moment, chain mat machine fused with new rib, can't move though piston plate is stressed, its reaction force spurs housing and drives support frame and moves to nearly rib direction as a result, the utility model is by filling the housing two ends, venting, finish in the coal mining drilling depth mobile working to chain mat machine and support frame, its operating principle is consistent with the band support with inflatable device, controls very convenient.

Accompanying drawing is the internal construction schematic diagram of the utility model embodiment.

The utility model is described in further detail below in conjunction with drawings and Examples.End face is the length of the closure casing 1 of the rectangle distance that the drilling depth chain mat machine need move that is equivalent at every turn to mine, all there are normally closed inflation inlet 2 and gas vent 3 in its two ends, piston plate 4 makes housing 1 form two airtight air chambers, pull bar 5 is connected on the piston plate 4, its other end stretches out the end of housing 1, in embodiment of the present utility model, in the air chamber of the both sides of piston plate 4, respectively be equipped with an elasticity inner tube of a tyre 6, two elasticity inner tubes of a tyre 6 respectively with the inflation inlet 2 of end separately, gas vent 3 is communicated with, the benefit of this mode is, utilize the elasticity inner tube of a tyre filling, flexible promotion piston plate during venting, can reduce the requirement to the strength of materials and the sealing performance of housing 1, manufacturing and maintenance are easily, convenient.

Claims (2)

1, the push-pull device at fixed of band support with inflatable device, it is characterized in that, this device is made up of piston plate (4), pull bar (5) in long and narrow closure casing (1) and the housing (1), pull bar (5) one ends are connected with piston plate (4), the other end stretches out the end of housing (1), and the two ends of housing (1) all are equipped with inflation inlet (2) and gas vent (3).

2, the push-pull device at fixed of band support with inflatable device according to claim 1 is characterized in that, respectively is equipped with an elasticity inner tube of a tyre (6) in the air chamber of words seben (4) both sides, and all with separately inflation inlet of end (2) and gas vent (3) are communicated with two elasticity inner tubes of a tyre (6).

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