CN201526321U - Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed - Google Patents
Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed Download PDFInfo
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- CN201526321U CN201526321U CN2009203120211U CN200920312021U CN201526321U CN 201526321 U CN201526321 U CN 201526321U CN 2009203120211 U CN2009203120211 U CN 2009203120211U CN 200920312021 U CN200920312021 U CN 200920312021U CN 201526321 U CN201526321 U CN 201526321U
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- front beam
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Abstract
The utility model discloses fully-mechanized top coal caving coal mining equipment for the advanced support and the full mechanization of a lengthened front beam of a three-soft coal bed. The equipment comprises a coal mining machine, a scraper conveyor (1) and a hydraulic support (2); a retractable front beam (3) and a retractable front beam hydraulic cylinder (4) are mounted at the front end of the hydraulic support (2); the retractable front beam (3) is connected with the retractable front beam hydraulic cylinder (4) through a pin; and the lengthened front beam (5) is mounted at the front end of the retractable front beam (3). The fully-mechanized top coal caving coal mining equipment can control the full mechanization of the three-soft unstable coal bed and has no leakage and no caving of top coal or a top plate in a coal wall spalling position of a fully-mechanized working face; and moreover, the equipment has the characteristics of rapid frame shifting, cost reduction, simple process, higher safety, less working hours, high production efficiency and the like, and is particularly suitable for the coal mining of the three-soft coal bed.
Description
Technical field
The utility model relates to a kind of coal excavation apparatus, and particularly a kind of three-soft seam lengthening front-axle beam advance support is combined and adopted, the mining coal excavation apparatus.
Background technology
" three is soft " coal seam coal-face is meant that top board instability, easily inbreak, coal seam are soft, rockiness coefficient f＜1.0, easily wall caving and the base plate press in strength is low, bracket base easily falls into the end work plane.Top coal caving, face roof are cherry coal, and roof fall very easily takes place before the frame.Prevent the key that coal wall caving and leading roof fall are exploitation " three is soft " coal seams.The exploitation of three-soft seam is a difficult problem in China always, also is difficult to control on the safety, and back production efficient is also very low, does not find method preferably all the time.The method of traditional exploitation three-soft seam generally all is to annotate the Mary toward coal body and top board punching and loose adopting in the lane up and down of face, to solidify coal body and top board, reaches when mining rib not wall caving or few wall caving, the leading inbreak of top board.But find that in actual recovery process loose solidification to coal body of Mary is especially little even do not work.The discovery of tracing it to its cause: the one, this three-soft seam is met water can argillization diminish the permeability of boring, has hindered the infiltration diffusion that the Mary looses; The 2nd, the volume of coal face coal is too big, and coal body can't be bonded to one.Cause the usually leading wall caving leakage of rib roof fall in exploitation process, face ventilation walkway is adopted in obstruction, kills and adopts the face drag conveyor, brings many potential safety hazards, the safety in production that face is adopted in serious restriction, and diffusing expensive fund and the manpower of also needing of Mary annotated in punching.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of can control three soft irregular coal seams combine adopt, the top coal or the top board at fully mechanized coal face coal wall caving place, make its do not leak the three-soft seam lengthening front-axle beam advance support that does not emit and save cost combine adopt, the mining coal excavation apparatus, thereby overcome the deficiencies in the prior art.
For solving the problems of the technologies described above the technical solution of the utility model: three-soft seam lengthening front-axle beam advance support is combined and is adopted, the mining coal excavation apparatus.Its formation comprises coal-winning machine, drag conveyor and hydraulic support, at the front end of hydraulic support cantilever extension and cantilever extension hydraulic jack is housed; Cantilever extension and cantilever extension hydraulic jack are to connect by pin; The lengthening front-axle beam is installed on the front end of cantilever extension.
Above-mentioned three-soft seam lengthening front-axle beam advance support is combined and is adopted, in the mining coal excavation apparatus, the tail end of lengthening front-axle beam is that the front end by bolt and cantilever extension links.
Aforesaid three-soft seam lengthening front-axle beam advance support is combined and is adopted, in the mining coal excavation apparatus, have horizontal connection holes on the vertical plane at lengthening front-axle beam rear portion; Tail end at the lengthening front-axle beam is welded with buckle, has vertical hold-down apertures on buckle; The lengthening front-axle beam is to be fixed by bolts on the cantilever extension by horizontal connection holes and vertical hold-down apertures.
The beneficial effects of the utility model: compared with prior art, the utility model is installed a lengthening front-axle beam at the front end of the cantilever extension of comprehensive mining hydraulic bracket, hydraulic jack by cantilever extension when mining puts in the coal body the inside to the part of lengthening front-axle beam front end, allow the lengthening front-axle beam support the empty top zone territory that forms because of wall caving on the one hand, allow coal body that the lengthening front-axle beam is had a support force on the other hand, so just changed the force-bearing situation of hydraulic support back timber, make it by original only by the column cantilever support, becoming an end is upright supports, the other end is supported by coal body, improved the force-bearing situation of hydraulic support, reduced the specific contact pressure of bracket base, reduced amount at the bottom of the brill of bracket base the bottom.And the cantilever extension of support has coal body to support, and tries to stop people from fighting each other and the bracket base front end can be mentioned when falling frame, helps moving frame.Coal-winning machine just can cut ground coal and coalings under the shielding of hydraulic support back timber, cantilever extension and lengthening front-axle beam in three-soft seam, does not worry the wall caving roof fall.
Advantage of the present utility model has: 1, it can control three soft irregular coal seams combine adopt, the top coal at fully mechanized coal face coal wall caving place or top board do not leak by it and do not emit; 2, it is quick to move frame, because the lengthening front-axle beam has rib to support, can fall frame by column when trying to stop people from fighting each other bracket base is mentioned, and reduces to move the frame resistance; 3, Jia Gong lengthening front-axle beam can use repeatedly, has saved cost; 4, the hydraulic support that the lengthening front-axle beam has been installed screens the space big, and personnel are far away apart from the wall caving place, and are safer, and the section that ventilates simultaneously is big, helps the gas management; 5, make three soft irregular coal seam coal cutting technologies simple, save man-hour, improved efficient; 6, because some quilt of lengthening front-axle beam is stretched into coal body, it has a fixation to the hydraulic support back timber, helps the anti-down of hydraulic support.
Description of drawings
Fig. 1 is a normal supporting view of installing the hydraulic support of lengthening front-axle beam;
Fig. 2 had just cut coal the supporting view of lengthening front-axle beam when stretching out;
Fig. 3 is the structural representation of lengthening front-axle beam of the present utility model;
Fig. 4 is the upward view of lengthening front-axle beam of the present utility model;
Fig. 5 is the vertical view of lengthening front-axle beam of the present utility model.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
The specific embodiment
Embodiment 1.As shown in Figure 1, comprise coal-winning machine, drag conveyor 1 and hydraulic support 2, front end at hydraulic support 2 is equipped with cantilever extension 3 and cantilever extension hydraulic jack 4, cantilever extension 3 and cantilever extension hydraulic jack 4 connect by pin, lengthening front-axle beam 5 is installed on the front end of cantilever extension 3, and the tail end of lengthening front-axle beam 5 links by the front end of bolt and hydraulic jack 4.The shape of lengthening front-axle beam 5 as shown in Figure 3, its width is the width of cantilever extension 3, length is different according to the soft degree in coal seam, mining height and the wall caving degree of depth of entering, and mining height is generally 1.2～1.6 meters in the length of 2～2.5 meters dead-soft coal seam lengthening front-axle beam 5.Lengthening front-axle beam 5 fixedly is a key of the present utility model at cantilever extension 3 beam-ends.When processing welding lengthening front-axle beam 5, the position in the hole of fixing lengthening front-axle beam 5 can be different (if the beam-ends of cantilever extension 3 does not have the hole because of the geomery of the cantilever extension 3 of different hydraulic supports, will bore three holes that can fix the front-axle beam 5 that extends in its relevant position of end face), on relevant position on the vertical plane at lengthening front-axle beam 5 rear portions, bore horizontal (horizontal direction) connection holes 7 of three same diameter, welding lastblock thick below the tail end of lengthening front-axle beam 5 is 20～30 millimeters buckle 8, bore the hold-down apertures 9 of two vertical (vertical direction) on buckle 8, the welding of buckle 8 must be solid and reliable.Correspond to and bore two holes on the position of two seams on the cantilever extension 3 being welded with this piece buckle 8 in order to fixing lengthening front-axle beam 5.Utilize two vertical hold-down apertures 9 on the buckle 8 to put down two bolts from above and pass seam on the cantilever extension 3, withhold front end with cushion block and the nut front-axle beam 5 that will extend below at cantilever extension 3, compress with will extend three holes of three horizontal connection holes 7 and cantilever extension 3 leading sections of front-axle beam 5 afterbodys of three bolts again, load on the lengthening front-axle beam 5 mainly is to get on by the cantilever extension 3 that the buckle 8 on the lengthening front-axle beam 5 and three bolts on the horizontal direction are delivered to hydraulic support 2 like this, and on the vertical direction two are flat bolt strained little, it only works to compress lengthening front-axle beam buckle 8, and these two flat bolts just are not easy to damage like this.The lengthening front-axle beam 5 installation be the face of adopting cut install hydraulic support 2 and drag conveyor 1 in the eyes after, manually leave 1.6～1.8 meters group in the place ahead of rib 6, complete wire lath and waste and old i iron or track on the top and after forming false top, carry out, safeguard this space so that lengthening front-axle beam 5 usefulness are installed.After the front-axle beam 5 that will extend was transported to the face of adopting, segmentation was got on the cantilever extension 3 that the front-axle beam 5 that manually will extend is installed to hydraulic support 2 by frame then.
Because three-soft seam coal wall caving, in order to reduce to form the distance on empty top because of wall caving, all need be pulled through hydraulic support 2 in advance during coal mining, just normal supporting state is that drag conveyor 1 is near rib 6, and hydraulic support 2 is again near drag conveyor 1 (as shown in Figure 1).The order of the place ahead coal cutting is: the coal-winning machine coal cutting, rib 6 wall caving inward immediately, 6 li remove control top board or top coal (as shown in Figure 2) with the cantilever extension hydraulic jack 4 front-axle beam 5 propelling cherry coal walls that will extend this moment, behind coal-winning machine, progressively drag conveyor 1 is moved by rib 6 again, moving hydraulic support 2 forward again, this moment, the cantilever extension hydraulic jack 4 was in retracted mode again, carried out rear caving coal in the place that moves past hydraulic support 2, and it is the same with common caving coal operation to put the coal operation.Repeat above-mentioned steps and can finish the coal mining process.
Embodiment of the present utility model is not limited to the foregoing description, all belongs within the protection domain of the present utility model in the various variations of making under the prerequisite that does not break away from the utility model aim.
Claims (3)
- Three-soft seam lengthening front-axle beam advance support combine adopt, the mining coal excavation apparatus, comprise coal-winning machine, drag conveyor (1) and hydraulic support (2), it is characterized in that: the front end at hydraulic support (2) is equipped with cantilever extension (3) and cantilever extension hydraulic jack (4); Cantilever extension (3) and cantilever extension hydraulic jack (4) connect by pin, and lengthening front-axle beam (5) is installed on the front end of cantilever extension (3).
- 2. three-soft seam lengthening front-axle beam advance support according to claim 1 is combined and is adopted, the mining coal excavation apparatus, and it is characterized in that: the tail end of described lengthening front-axle beam (5) links by the front end of bolt and cantilever extension (3).
- 3. three-soft seam lengthening front-axle beam advance support according to claim 2 is combined and is adopted, the mining coal excavation apparatus, it is characterized in that: have horizontal connection holes (7) on the vertical plane at described lengthening front-axle beam (5) rear portion; Tail end at lengthening front-axle beam (5) is welded with buckle (8), has vertical hold-down apertures (9) on buckle (8); Lengthening front-axle beam (5) is fixed by bolts on the cantilever extension (3) by horizontal connection holes (7) and vertical hold-down apertures (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203120211U CN201526321U (en) | 2009-10-09 | 2009-10-09 | Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203120211U CN201526321U (en) | 2009-10-09 | 2009-10-09 | Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed |
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| Publication Number | Publication Date |
|---|---|
| CN201526321U true CN201526321U (en) | 2010-07-14 |
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|---|---|---|---|
| CN2009203120211U Expired - Lifetime CN201526321U (en) | 2009-10-09 | 2009-10-09 | Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221174A (en) * | 2015-10-08 | 2016-01-06 | 山西晋城无烟煤矿业集团有限责任公司 | Cross inbreak section supporting method |
-
2009
- 2009-10-09 CN CN2009203120211U patent/CN201526321U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221174A (en) * | 2015-10-08 | 2016-01-06 | 山西晋城无烟煤矿业集团有限责任公司 | Cross inbreak section supporting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100714 Effective date of abandoning: 20091009 |