Simple hydraulic support for similar material simulation tests

Abstract

The invention discloses a simple hydraulic support for similar material simulation tests. The simple hydraulic support is characterized by comprising an oil cylinder, a propelling body, a supporting body and a hydraulic pressure gauge; a main body of the oil cylinder is a cuboid, and a lifting piston is arranged in the main body of the oil cylinder, is integrally welded with two connecting columns and the supporting body and can move up and down along with hydraulic oil; an auxiliary body of the oil cylinder is a cylinder, a propelling piston is arranged in the auxiliary body of the oil cylinder, an end of the propelling piston is rotationally sealed by a clamp cover, and a threaded circular hole is formed in the center of the clamp cover; a propelling column, the propelling piston and a rotary handle are welded with one another to form the propelling body, and propelling effects can be realized by the propelling body under the meshed effects of the propelling column and threads on the circular hole in the clamp cover; an oil inlet hole is formed in the top of an end of the main body of the oil cylinder, the hydraulic pressure gauge is connected with the oil inlet hole by an oil delivery pipe, and oil pressures can be measured by the hydraulic pressure gauge. The simple hydraulic support has the advantages that prototypes of the hydraulic support can be converted into models in the similar material simulation tests, and the simple hydraulic support is simple in manufacturing process and high in applicability.

Description

technical field [0001] The invention relates to the technical field of mining similar material simulation test equipment, in particular to a simple hydraulic support used for laboratory similar material simulation tests. Background technique [0002] The roof control area of ​​the coal seam mining working face on the mine site is usually supported by hydraulic supports to provide a safe mining space, and one of the main research methods for the emergence of the mine pressure law in the working face is to observe the characteristics of the force of the working face support, Research and analysis, therefore, supports play an integral role in the coal seam recovery process. However, in the simulation tests of similar materials in underground mining in the laboratory, especially in the process of simulating coal seam recovery at the mine site, the role of the support is often ignored, because there is no simulation of the support of the site support to the roof, which is weakene...

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Problems solved by technology

The existing patent CN 102866032 A discloses a simulation test system for similar materials, including a model support, a measuring cylinder, a hose and a radio frequency capacitive liquid level transmitter. Although it can simulate the on-site hydraulic support, and record the load on the support and Displacement changes, but the system process is more complicated. If the thickness of the coal seam is small, the size of the support is easily limited, and the patent does not give the specific design of the support from the three-dimensional space; the existing patent CN 202832571 U discloses a method for similar The support of the coal mining face for the material simulation test includes the top, bottom beams and support mechanism. The support function of the support is realized by the helical compression spring in the support mechanism. Although the manufacturing process of the device is simple, the support can only play a certain supporting role , the pressure data of the support-surrounding rock interaction cannot be observed, and the spring is prone to elastic fatigue when used for a long time

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