CN86203486U

CN86203486U - Simple hydraulic support with slided top beam

Info

Publication number: CN86203486U
Application number: CN 86203486
Authority: CN
Inventors: 张义铄; 苏士亮; 王宗弘; 潘铭棠; 张元银; 李鹤皋; 谭克俊; 肖高雄
Original assignee: CHONGQING INST ACADEMY OF COAL SCIENCE MINISTRY OF COAL INDUSTRY
Current assignee: CHONGQING INST ACADEMY OF COAL SCIENCE MINISTRY OF COAL INDUSTRY
Priority date: 1986-05-23
Filing date: 1986-05-23
Publication date: 1987-10-03

Abstract

The utility model discloses a simple hydraulic support frame with sliding top beams, comprising a front beam, a central beam, a back beam, a front beam, a central column, a back column, an upper pushing jack, a lower pushing jack, back base, hydraulic operated control system, etc. The hydraulic prop is cooperated with a floor-based shearer, a conveyor, and a liquid feeding device to form a comprehensive mining device used for gently inclined seams with the mining height in the range of 0.7-1.1 meters. The mining device can be used to realize the full mechanization of the coal breaking, the coal charging, the coal handling, the support, and the roof management in the thin seam coal mining technology, reducing the labour intensity of workers, improving the safety condition of workers and increasing the production efficiency.

Description

Simple hydraulic support with slided top beam

The utility model is applicable to mechanical mining girdle supporting roof under the coal mine.

Realize that at thick 0.7～1.1 meter girdle of coal the mechanization difficulty is big.In recent years, both at home and abroad development is attached great importance to the mining equipment of girdle as thin as a wafer, promoted the use of the more 1KM-103 type thin coal bed fully-mechanized mining unit that the Soviet Union is arranged abroad, its mining height lower limit can reach 0.7 meter, but complete equipment structure bulky complex, high price.Domestic not developing as yet is applicable to that the mining height lower limit reaches the comprehensive corollary equipment of adopting of 0.7 meter girdle.In the coal seam of 0.7～1 meter thickness, what mechanization degree was best is to adopt hydraulic prop to join the girdle flitting.But, using this high-grade conventional mining corollary equipment, the workman is when supporting roof, still have heavier manual labor, especially, also do not have rational supporting back timber at the broken ultra-thin coal seam of top board, top board is difficult to management, has a strong impact on the efficient of coal excavation apparatus and workman's safety.

For realize in the girdle coal winning technology coal breakage, coaling, transport the full mechanization of coal, supporting and roof control, alleviate labor strength, improve the safety of workers condition, enhance productivity.For this reason, having invented with the hydraulic prop is that suitably repacking is done on the basis, increases sliding type cap for supporting mine roof again, passes jack and hydraulic operation control system etc. and forms a kind of easy hydraulic support.Be equipped with off pan shearer and conveyer and liquid feed device with this hydraulic support and can form the simple integrative mining equipment that the gently inclined seam of 0.7～1.1 meter of mining height uses.

The utility model can satisfy: with the supporting sliding light hydraulic support of back timber of off pan shearer, adopt this supporting mode can make the adaptation lower limit of mechanization performing comprehensive coal mining mining height be reduced to 0.7 meter, and cost is not high.

Structure of the present utility model:

The sliding simple and easy hydraulic support of back timber (Fig. 1, Fig. 2) is by front-axle beam 1, central sill 2, the back rest 3, front pillar 4, center pillar 5, rear pillar 6, on pass jack 7, compositions such as passing jack 8, rear base 9 and hydraulic operation control system down.Front-axle beam 1, central sill 2, the back rest 3 use

bearing pin

10,11,12 and front pillar 4, center pillar 5, rear pillar 6 hinged respectively, one of front pillar, in, each two (Fig. 3: Fig. 1 I-I section, Fig. 4: Fig. 1 II-II section, Fig. 5: Fig. 1 III-III section) of rear pillar.It between front pillar and the center pillar coal-face conveyer passage.Front-axle beam beam body afterbody inserts central sill cover plate belly with bearing pin 13 hinged flat springs 14, use bearing pin 15 a hinged flat spring 16 respectively about back rest beam body front end respectively, and insert respectively within the central sill left and right beam frame, these flat springs can guarantee the slippage and the supporting of beam.Cylinder body one end of last passing jack 7 is hinged with pin 17 and middle beam rear part ear seat 18, and its piston rod then uses pin 19 and preceding beam rear part ear seat 20 hinged, as passing front-axle beam and central sill.Cylinder body one end of following passing jack 8 is hinged by the engaging lug seat 24 of cross contiguous block 21 and two

pins

22,23 and work plane conveyer ledge, its piston rod then uses pin 25 hinged with the ear seat 26 on the rear base, makes the usefulness of passing the work plane conveyer and moving the back rest.Operation valve group is screwed on seat board, seat board is screwed on left side, central sill beam body rear portion, and column control combination valve is screwed on right side, central sill beam body rear portion, and the high and low pressure sebific duct connects each column with snap joint respectively, jack and control valve, control valve.The work plane hydraulic system is connected on the operating valve set into and out of the emulsion pipe for support.

Job step of the present utility model (Fig. 6):

One, behind the coal-winning machine coal cutting, the sliding simple and easy hydraulic support of the back timber of its back moves front-axle beam immediately, and step is:

(1) compression cylinder is unloaded in the front pillar tapping, and front pillar is suspended on the front-axle beam (Fig. 6-a).

(2) go up to pass jack piston rod and stretch out, it is the dark (Fig. 6-b) of cutting of coal-winning machine that front-axle beam and front pillar are passed a step pitch forward.

(3) rise front pillar, and the front-axle beam roof supporting (Fig. 6-c).

Two, locate to begin to move conveyer at coal-winning machine by back about 2 meters, when moving conveyer, handle passing jack down, its piston rod is stretched out get final product, the bending section of work plane conveyer is about 20 meters, just can pass conveyer by about 20 meters, back at coal-winning machine and put in place (Fig. 6-d).

Three, just can move central sill after moving conveyor puts in place, step is:

(1) center pillar unloads compression cylinder, and center pillar is suspended on the central sill (Fig. 6-e).

(2) go up to pass jack and shrink piston rod, its cylinder body drives central sill and center pillar and passes a step pitch (Fig. 6-f) forward.

(3) rise center pillar, and the central sill roof supporting (Fig. 6-g).

Four, behind central sill reach and the roof supporting, the back rest caving that moves forward immediately, step is:

(1) rear pillar unloads the compression post, and back rest disengaging top board (Fig. 6-h).

(2) pass down jack piston rod and shrink, the base rear pillar and the back rest are passed a step pitch (Fig. 6-i) forward.

(3) rise rear pillar, and back rest roof supporting (Fig. 6-j).

So far, whole pack support is moved one's steps and is finished.

Advantage of the present utility model:

1. compare with other hydraulic supports, this supporting structure is simple, installs in the down-hole, dismounting, resettlement be all more convenient, and price is more honest and cleaner.

2. the front pillar of this support is arranged between off pan shearer and the work plane conveyer, get final product the new top board that exposes of immediate support with the coal-winning machine operation, can dwindle the sky top area, top board is difficult for pressing because of the ore deposit and causes to break and can reduce the amount of crushing, be convenient to coal-winning machine by and the maintenance of top board.

3. the back timber of this support takes three to save interlaced arrangement, and three joint back timbers are passed respectively, when wherein any joint back timber is passed, two saves the bar timbering top boards in addition, and this can reduce the loosening of top board, reduces the deflection and the destructiveness of top board, and safety is better.

4. supporting with the simple integrative mining of off pan shearer composition with this support, more flexible to the requirement of supporting conveyer.

5. the simple integrative mining of being made up of this support is supporting does not have specific (special) requirements to the crossheading size, and general blast mining face crossheading size all can satisfy, and can save the driving and the maintenance cost of crossheading.

Claims

1, the utility model is the sliding simple and easy hydraulic support of a kind of back timber, by front-axle beam, central sill, the back rest, front pillar, center pillar, rear pillar, and upper and lower passing jack, rear base and hydraulic operation control system are formed; It is characterized in that front-axle beam, central sill, the back rest are column articulated with front pillar, center pillar, back respectively.

2, by the sliding simple and easy hydraulic support of the described a kind of back timber of claim 1, it is characterized in that one of front pillar, in, each two of rear pillars, be coal-face conveyer passage between front pillar and the center pillar.

3, by claim 1 or the sliding simple and easy hydraulic support of 2 described a kind of back timbers, it is characterized in that the flat spring that front-axle beam beam body afterbody connects inserts central sill cover plate belly, two flat springs that back rest beam body front end connects also insert respectively within the central sill left and right beam frame.

4, by claim 1 or the sliding simple and easy hydraulic support of 2 described a kind of back timbers, it is hinged to it is characterized in that passing jack cylinder body one end usefulness pin and middle beam rear part ear seat, and its piston rod then uses pin and preceding beam rear part ear seat hinged.Following passing jack cylinder body one end is hinged by the engaging lug seat of cross contiguous block and two pins and work plane conveyer ledge, and its piston rod then uses the ear seat on pin and the rear base hinged.

5,, it is characterized in that back timber takes three joint interlaced arrangement by claim 1 or the sliding simple and easy hydraulic support of 2 described a kind of back timbers.