WO2014008716A1

WO2014008716A1 - Universal statically indeterminate hydraulic support

Info

Publication number: WO2014008716A1
Application number: PCT/CN2012/082163
Authority: WO
Inventors: 李炳文; 王建武; 洪建云; 赵继云; 陈世其; 王启广; 陈为民
Original assignee: 中国矿业大学
Priority date: 2012-07-09
Filing date: 2012-09-27
Publication date: 2014-01-16
Also published as: CN102704977B; CN102704977A

Abstract

A universal statically indeterminate hydraulic support mainly consists of a top beam (5), a base (1), eight hydraulic stand columns (4), a front beam (7), a telescopic beam (9), a tail beam (3), a connection plate (2), a hydraulic control valve component (12), and a push device (14). The eight hydraulic stand columns (4) are symmetrically arranged between the top beam (5) and the base (1) in a meshed manner. Upper ends of the eight hydraulic stand columns (4) are connected with the top beam (5) in a hinged manner, and lower ends of the eight hydraulic stand columns (4) are connected with the base (1) in a hinged manner. The front beam (7) is connected with the top beam (5) in a hinged manner. The telescopic beam (9) is disposed in the front beam (7). A sprag (11) is connected with the telescopic beam (9) in a hinged manner. An upper end of the tail beam (3) is connected with the top beam (5) in a hinged manner, and a lower end of the tail beam (3) is connected with an upper end of the connection plate (2) in a hinged manner. A lower end of the connection plate (2) is connected with a lifting frame (15) in a hinged manner. The lifting frame (15) is welded with the base (1) integrally. The hydraulic control valve component (12) is arranged on an over-bridge box (13) which is welded with the base (1) integrally; the front and rear ends of the push device (14) are connected with the base (1) and a scraper conveyor (16) in a hinged manner respectively. The support is simple in structure and process, good in stability, safe and reliable in use, and practical in a wide range.

Description

Universal type static static hydraulic support

Technical field

The invention relates to a general-purpose statically indeterminate hydraulic support, which is especially suitable for roof support of coal mining face under coal mine, and is also suitable for other occasions requiring support.

Background technique

Mine support equipment is one of the essential equipment in coal mines. The supporting equipment used in the coal mine mainly has the hydraulic support of the four-bar linkage mechanism, also called the four-link hydraulic support. The movement track of the top and bottom of the four-link hydraulic support top beam is a double button line. For details, see Coal Industry Press. The third section of the third chapter of the "Coal Mine Support Manual" published in 1993 and the "Eleventh Five-Year" College National Planning Textbook "Mining Machinery" published by China University of Mining and Technology Press in 2010 Support equipment content. The four-link hydraulic support started in the 1950s. In the 1960s, the technology entered a mature stage, and in the late 1970s, it began to introduce China's coal industry. Problems with the four-link hydraulic support: First, because the top beam is a double-button movement track, one-to-one redesign should be carried out each time, and the prototype and performance test of the sample rack can be carried out. Obtaining the safety standard certificate, and finally the production of the hydraulic support, so that a cycle of less than half a year, more than one year to hand the equipment to the coal mine, the efficiency is quite low; Second: due to the structure of the four-link hydraulic support Features, it can not achieve modular design, can only carry out one-to-one single set design and production, design workload is heavy, long production cycle, labor intensity, high production cost, higher cost of intermediate links, seriously affecting China The promotion speed and promotion of hydraulic brackets. Three: Because 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, not to It is possible to perform an integrated assembly. Therefore, based on the existing four-link hydraulic support, changing the technical principle and technical structure of the existing hydraulic support has important practical and historical significance.

technical problem

The object of the present invention is to provide a general-purpose statically indeterminate hydraulic support with compact structure, reduced miner labor intensity, improved miner safety, reduced production cost, easy promotion and good support effect in view of the problems existing in the prior art.

Technical solution

The utility model relates to a general-purpose statically indeterminate hydraulic support, which is characterized in that it comprises a top beam, a base, eight hydraulic columns, a front beam, a telescopic beam jack, a tail beam, a connecting plate, a pushing device and an elevated frame; The eight hydraulic columns are arranged in a cross-symmetry between the top beam and the base. The upper ends of the eight hydraulic columns are hinged to the top beam, and the lower end is hinged to the base. The front beam and the top beam are hinged, and the front beam and the top beam are hinged. The front beam jacks are respectively hinged on the top beam and the front beam respectively, the telescopic beam is arranged in the front beam, and the telescopic beam jack connected to the telescopic beam is arranged under the front beam, and the two ends of the telescopic beam jack and the telescopic beam respectively The front beam is hinged; the guard beam is arranged under the telescopic beam, and the guard panel is provided with a guard panel jack for swinging, and the guard panel jack is respectively hinged with the guard panel and the telescopic beam; the upper end of the tail beam is The top beam is hinged, the lower end is hinged with the upper end of the connecting plate, the lower end of the connecting plate is hinged with the lifting frame, and the elevated frame is fixed on the base; the base is welded with a bridge box, and the hydraulic control valve assembly is mounted on the bridge box; The pushing device is arranged on the base At its opposite ends to the inner face of the base and coal articulated scraper conveyor.

The top beam, the front beam, the telescopic beam, the guard plate, the tail beam, the connecting plate, the base, the bridge box, and the elevated frame are welded by steel plates or profiles; the hydraulic control valve assembly is manually operated by a group The valve or the electro-hydraulic remote control valve, the one-way valve, the pipe fitting and the sealing member are composed; the guarding plate is a first-grade guard plate, a secondary guard plate or a multi-stage guard plate.

Beneficial effect

The upper and lower movement trajectory of the top beam of the general-purpose statically indeterminate hydraulic support of the invention is a straight line, which can realize modular design, serialization, standardized production and integrated assembly, and the maximum height hydraulic bracket in the module can cover the hydraulic pressure of a small height. The bracket reduces the intermediate link, improves the production efficiency, reduces the production cost, and can realize the rapid promotion of the hydraulic bracket. According to the pressure and height of the roof of the coal mine, several modules are set up. Each module is designed with several hydraulic brackets with the same working resistance but different heights, and the height specifications conform to the serialization standard. The principle of covering the lower height bracket with the highest bracket, the maximum height specification The trial production system, the sample rack inspection, the safety standard forensics work, the smaller size brackets are covered, the intermediate production links are reduced, and the production cycle is shortened. The main advantage:

(1) The general-purpose static static fixed hydraulic support of the invention can realize serialized and standardized production, and the parts are made into standard parts, and the brackets of different height specifications of the standard series can be formed according to the condition of the coal seam, and which kind of specifications the coal mine needs is selected. Which type of specification is selected for integrated assembly production, which improves production efficiency;

(2) The general-purpose ultra-static static hydraulic support of the invention can realize large-scale production, and each component can form a production line to realize large-scale rapid and effective production, and achieve the purpose of satisfying the large-scale promotion of the hydraulic support of the coal mine;

(3) The universal static static fixed hydraulic support of the invention can be applied to the fully mechanized mining working face, and can also be used for the blasting working face, and has the advantages of simple structure, good stability, convenient and reliable use, and wide practicality.

DRAWINGS

Fig. 1 is a structural view of the present invention.

In the picture: base-1, connecting plate-2, tail beam-3, eight hydraulic columns-4, top beam-5, front beam jack-6, front beam-7, telescopic beam jack-8, telescopic beam- 9, guard plate jack - 10, guard plate - 11, hydraulic control valve assembly -12, bridge box - 13, moving device - 14, lifting frame - 15, scraper conveyor -16.

Embodiments of the invention

An embodiment of the present invention will be further described below with reference to the accompanying drawings:

As shown in Fig. 1, the universal type static static fixed hydraulic support of the invention mainly comprises a base 1, a connecting plate 2, a tail beam 3, eight hydraulic columns 4, a top beam 5, a front beam jack 6, a front beam 7, and a telescopic The beam jack 8, the telescopic beam 9, the guard panel jack 10, the guard panel 11, the hydraulic control valve assembly 12, the bridge box 13, the pushing device 14, and the elevated frame 15 are composed. The top beam 5, the front beam 7, the telescopic beam 9, the guard panel 11, the tail beam 3, the connecting plate 2, the base 1, the bridge box 13, and the elevated frame 15 are welded by steel plates or profiles. The hydraulic control valve assembly 12 is composed of a set of manually operated valves or electro-hydraulic remote control valves, check valves, pipe fittings and seals. The hydraulic control valve assembly 12 is a control center for each action of the bracket, and can be manually operated or electro-hydraulic. remote control. The eight hydraulic columns 4 are arranged in a cross-symmetry between the top beam 5 and the base 1. The upper ends of the eight hydraulic columns 4 are hinged to the top beam 5, and the lower end is hinged to the base 1. The front beam 7 is The top beam 5 is hinged, and the front beam 7 and the top beam 5 are provided with a front beam jack 6 which is respectively hinged on the top beam 5 and the front beam 7 respectively. When the front beam jack 6 is extended and contracted, the front beam 7 surrounds the top beam. 5 The hinge shaft swings; the front beam 7 is provided with a telescopic beam 9, and the front beam 7 is provided with a telescopic beam jack 8 connected to the telescopic beam 9, and the telescopic beam 9 is telescoped with the telescopic beam jack 8 telescopically, and the telescopic beam jack 8 is two The ends are respectively hinged with the telescopic beam 9 and the front beam 7; the telescopic beam 9 is provided with a protective panel 11 which is a first-level guarding board, a secondary guarding board or a multi-stage guarding board. The lower bracket can be omitted from the lower bracket. The guard panel 11 is provided with a guard panel jack 10 for swinging, and the guard panel jacks 10 are respectively hinged with the guard panel 11 and the telescopic beam 9; the upper end of the tail beam 3 is hinged to the top beam 5, and the lower end is connected The upper end of the plate 2 is hinged, the lower end of the connecting plate 2 is hinged to the elevated frame 15, and the elevated frame 15 is fixed to the base 1. The base 1 is welded with a bridge box 13 , and the bridge box 13 is mounted with a hydraulic control valve assembly 12 ; the shifting device 14 is disposed in the base 1 , and the two ends are respectively connected with the base 1 and the coal mining face The inner scraper conveyor 16 is hinged. When the eight hydraulic columns 4 are extended and lowered, the top beam 5, the front beam 7, the tail beam 3, and the like are lifted and lowered, and the tail beam 3 is also swung around the hinge axis of the top beam 5, and the connecting plate 2 is surrounded thereby. Swinging with the hinge shaft on the elevated frame 15, the tail beam 3 and the connecting plate 2 also swing relative to each other about the hinge axis; the front beam 7 is hinged to the front end of the top beam 5, and the front beam jack 6 is hinged to the top beam 5 and the front beam 7, respectively. When the front beam jack 6 is telescoped, the front beam 7 swings up and down around the hinge axis of the top beam 5, and the telescopic beam 9 is disposed in the front beam 7, and the two ends of the telescopic beam jack 8 are respectively combined with the front beam 7 and the telescopic beam 9 Hinged, the telescopic beam 9 enters and exits with the expansion and contraction of the telescopic beam jack 8; the pushing device 14 is a component for pushing the scraper conveyor 16 and the moving hydraulic support, which are respectively hinged with the base 1 and the scraper conveyor 16; hydraulic control valve The assembly 12 is a control center for manipulating and controlling high-pressure liquid, eight hydraulic columns 4 on the bracket, a front beam jack 6, a telescopic beam jack 8, a guard jack 10, a shifting device 14 and a side guard jack on the top beam 5. The control is controlled by the hydraulic control valve assembly 12, and the hydraulic control valve assembly 12 is installed. The upper tank 13, tank 13 and a bridge integrally welding the base, the overall configuration universal hydraulic support statically indeterminate structure.

work process:

When the bracket is lifted, by operating the hydraulic control valve assembly 12, the high pressure liquid enters the large cavity of the eight hydraulic columns 4, the top beam 5, the front beam 7, the tail beam 3 rises, the front beam jack 6, the telescopic beam 9) the telescopic beam jack 8. The guard panel 11 and the guard panel jack 10 are then raised, and the tail beam 3 rotates around the hinge shaft of the top beam 5, while the tail beam 3 and the connecting rod 2 swing relative to each other about the hinge axis thereof, and the riser 2 rises and surrounds Swing with the hinge shaft on the elevated frame 16.

When the bracket is lowered, by operating the hydraulic control valve assembly 12, the high pressure liquid enters the small cavity of the eight hydraulic columns 4, the top beam 5, the front beam 7, the tail beam 3 descends, the front beam jack 6, the telescopic beam 9, the telescopic beam jack 8. The guard panel 11 and the guard panel jack 10 are lowered accordingly, and the tail beam 3 rotates around the hinge shaft of the top beam 5, and the tail beam 3 and the connecting rod 2 swing relative to each other about the hinge axis thereof, and the puller 2 descends and surrounds Rotating with the hinge shaft of the elevated frame 15.

When the bracket is pushed down, by operating the hydraulic control valve assembly 12, the high pressure liquid enters the small cavity of the jack in the shifting device 14, and the scraper conveyor 16 is pushed.

When the bracket is moved, the scraper conveyor 16 is fixed, and by operating the hydraulic control valve assembly 12, the high pressure liquid enters the large cavity of the jack in the shifting device 14, and the hydraulic support is pushed.

The completion of the four movements of the bracket is completed by operating the hydraulic control valve assembly 12. The sequence of motion of the bracket is determined according to the situation of the working surface, and the bracket completes one working cycle every time the bracket completes four actions.

Claims

A general-purpose statically indeterminate hydraulic support characterized in that it comprises a top beam (5), a base (1), eight hydraulic columns (4), a front beam (7), a front beam jack (6), a telescopic beam Jack (8), tail beam (3), connecting plate (2), pushing device (14), lifting frame (15); the eight hydraulic columns (4) are arranged in a cross-symmetry of the top beam (5) Between the base and the base (1), the upper ends of the eight hydraulic columns (4) are hinged to the top beam (5), and the lower end is hinged to the base (1); the front beam (7) is hinged to the top beam (5). The front beam jacks (6) are respectively hinged to the front beam (7) and the top beam (5), the front beam (7) is provided with a telescopic beam (9), and the front beam (7) is provided with a telescopic beam (9). ) The connected telescopic beam jack (8), the two ends of the telescopic beam jack (8) are respectively hinged with the telescopic beam (9) and the front beam (7); the telescopic beam (9) is connected with the guard plate (11), the guard plate (11) is provided with a guard panel jack (10) for swinging, and the guard panel jack (10) is respectively hinged with the guard panel (11) and the telescopic beam (9); the upper end of the tail beam (3) Hinged to the top beam (5), The lower end of the tail beam (3) is hinged with the upper end of the connecting plate (2), the lower end of the connecting plate (2) is hinged with the lifting frame (15), and the elevated frame (15) is fixed on the base (1); the base (1) There is a bridge box (13), and a hydraulic control valve assembly (12) is mounted on the bridge box (13); the pushing device (14) is arranged in the base (1), and the two ends are respectively connected with the base ( 1) Hinged with the scraper conveyor (16) in the coal mining face.
The universal static static fixed hydraulic support according to claim 1, characterized in that: the top beam (5), the front beam (7), the telescopic beam (9), the guard panel (11), and the tail beam ( 3), the connecting plate (2), the base (1), the bridge box (13), and the elevated frame (15) are welded by steel plates or sections.
The universal static static hydraulic support according to claim 1, wherein said hydraulic control valve assembly (12) comprises a set of manually operated valves or electro-hydraulic remote control valves, check valves, pipe fittings and seals. Composition.
The universal static static hydraulic support according to claim 1, wherein the guard panel (11) is a primary guard panel, a secondary guard panel or a multi-stage guard panel.