Universal-type statically indeterminate hydraulic support

Abstract

The invention discloses a universal-type statically indeterminate hydraulic support, mainly composed of a top beam, a base, eight hydraulic vertical columns, a front beam, a telescopic beam, a tail beam, a connection plate, a hydraulic control valve assembly, a pushing device, etc. The eight hydraulic vertical columns are symmetrically arranged between the top beam and the base in a cross mesh shape, the upper ends of the eight hydraulic vertical columns are hinged with the top beam, and the lower ends of the eight hydraulic vertical columns are hinged with the base; the front beam is hinged with the top beam, the telescopic beam is arranged in the front beam, and a protective side plate is hinged with the telescopic beam; the upper end of the tail beam is hinged with the top beam, the lower end of the tail beam is hinged with the upper end of the connection plate, the lower end of the connection plate is hinged with a lifting frame, and the lifting frame and the base are welded together; the hydraulic control valve assembly is installed on a bridge-crossing box, and the bridge-crossing box and the base are welded together; and the front end and the rear end of the pushing device are hinged with the base and a scraper conveyor respectively. The universal-type statically indeterminate hydraulic support can be used for a fully-mechanized mining face or a blasting mining face, is simple in structural process, good in stability, safe and reliable in use, and wide in practicability.

Description

technical field [0001] The invention relates to a universal statically indeterminate hydraulic support, which is especially suitable for the roof support of the coal mining working face in a coal mine, and is also suitable for other occasions where support is required. Background technique [0002] Mine support equipment is one of the essential equipment in coal mines. The supporting equipment used in coal mines mainly includes the hydraulic support of the four-link mechanism, also known as the four-link hydraulic support. The movement trajectory of the top beam of the four-link hydraulic support is a double button line. For details, see Coal Industry Press The contents of Chapter 3, Section 3 of Chapter 3 of "Coal Mine Support Manual" published in 1993 and the "11th Five-Year Plan" national planning textbook for colleges and universities "Mining Machinery" published by China University of Mining and Technology Press in 2010. Support equipment content. The four-link hydrau...

AI Technical Summary

Problems solved by technology

Problems existing in the four-link hydraulic support: 1: Because the top beam is a double-button line movement track, it needs to be redesigned one-to-one every time it is used, and the trial production and performance testing of the sample frame are carried out. After passing the test, it can be After obtaining the safety standard certificate, the production and manufacture of the hydraulic support can be carried out at last. Such a cycle process can take as little as half a year and as long as more than a year before the equipment can be handed over to the coal mine for use. The efficiency is quite low; two: due to the structure of the four-link hydraulic support The characteristic is that it cannot realize modular design, and can only carry out one-to-one single-set design and production. The design workload is heavy, the production cycle is long, the labor intensity is high, the production cost is high, and the additional cost of the intermediate link is higher, which seriously affects my country's Promotion speed and application area of ​​hydraulic supports

Three: Since the four-link hydraulic support must be designed and manufactured one-to-one, it brings great difficulties to modularization, standardization, serialization, and integrated production, and it is impossible to carry out large-scale production of parts, let alone Integrated assembly possible

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