CN101943016A - Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed - Google Patents
Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed Download PDFInfo
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- CN101943016A CN101943016A CN 201010255177 CN201010255177A CN101943016A CN 101943016 A CN101943016 A CN 101943016A CN 201010255177 CN201010255177 CN 201010255177 CN 201010255177 A CN201010255177 A CN 201010255177A CN 101943016 A CN101943016 A CN 101943016A
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Abstract
The invention discloses a novel shielding full-mechanized mining hydraulic bracket for an extremely thin coal bed. The key of the full-mechanized mining of the extremely thin coal bed is the adaptability of full-mechanized mining equipment. When the mining of the extremely thin coal bed is carried out by the traditional method and process, supporting equipment for the working face of the extremely thin coal bed cannot overcome restrictions. The novel shielding full-mechanized mining hydraulic bracket for the extremely thin coal bed has the characteristics and performance of the common four bar linkage shielding hydraulic bracket, and mainly comprises a support cylinder, a top beam and a base which are arranged at two ends of the support cylinder, and a cylinder hinged at the rear end of the top beam; the place and state of the top beam are adjusted through the hinged cylinder; and the main motion of the bracket depends on two kinds of cylinders to sufficiently complete the state control of the whole bracket. The magnification ratio of the upright posts is amplified, and simultaneously the bracket has the advantages of high effective support load, high support strength, reliable stabilizing mechanism, consideration of the roof condition of the thin coal bead and suitability for factors which influence the behavior of the tight roof high-strength ground pressure, fills up the blank in the field of support which is most important for the full-mechanized mining of the extremely thin coal bed, and creates preconditions for realizing automatic machine following and other unmanned automatic working faces of the extremely thin coal bed.
Description
Technical field
The present invention relates to colliery underground coal mining face timbering equipment technical field, belong to a kind of support apparatus that is used for the ultra-thin coal seam work plane.
Background technology
1. China is widely distributed less than 0.8 meter ultra-thin coal seam, particularly occupy absolute ratio especially at southwest, East China and the Northeast's girdle coal reserves, the exploitation of ultra-thin coal seam is for solving mining area exploitation continue contradiction or exploitation liberation layer, improve the resource recovery ratio, it is significant to alleviate regional coal disparities between supply and demand.The space of ultra-thin coal seam exploitation simultaneously is narrow and small, special difficulty is arranged especially, the ultra-thin coal seam complex structure, fold, tomography, gas have both at the same time, and operating environment is abominable, production safety hidden danger is many, and the comprehensive difficulty of adopting is big, require high especially to plant equipment compliance, be difficult to use existing fully-mechanized mining equipment supporting, therefore generally adopt timber, behindhand types such as monomer carry out supporting, personal security is difficult to guarantee, coal-mining method falls behind, and adopts conventional equipment method exploitation ultra-thin coal seam, and is very difficult.Research and development can be applied to the hydraulic support stand equipment of ultra-thin coal seam, realize ultra-thin coal seam comprehensive mechanical coal mining and personal security, improve its output, are of great immediate significance.
Because the ultra-thin coal seam fully-mechanized mining working is high to the compliance requirement of coal mine machinery equipment, difficulty is big, the exploitation slower development of most mining areas ultra-thin coal seam, recovery ratio is low, serious waste of resources.The exploitation of ultra-thin coal seam new type hydraulic bearer can change the current mining of ultra-thin coal seam, and the effective and reasonable coal resources that utilize meet the requirement of building a conservation-minded society.
2. the adjustment requirement of national energy security, colliery industrial policy
Ultra-thin coal seam is distributed more widely in China, the occurrence condition complexity, and mine quantity is many, and the exploitation difficulty is big, and a lot of major accidents have taken place in recent years.In December, 2006, coal Supervisory Bureau of country was at the lesson that major accident takes place in the difficult mining coal seam exploitation in recent years, actively push forward the coal winning technology reform, eliminate informal coal-mining method, further improve ultra-thin coal seam safe working technology and managerial skills, organize units concerned and expert to draft difficult mining coal seam safe working instruction.Extensively solicit suggestion for revision, exposure draft points out that ultra-thin coal seam is distributed more widely in China, the occurrence condition complexity, and mine quantity is many, and the exploitation difficulty is big, and a lot of accidents have taken place in recent years.The colliery of exploitation ultra-thin coal seam will in line with safe and reliable, rationally be suitable for, advanced technology, eliminate the principle that falls behind and try to explore regular ultra-thin coal seam coal-mining method, improve constantly the mechanization level, the reasonable Arrangement getting working face, strict production safety management ensures safety in production.Forbid adopting various informal coal-mining methods.For violating " safety regulations in coal mine ", the various informal coal-mining method that does not reach safety requirements should order it to stop using.
China's coal-mine exploitation scale increases gradually, working condition becomes increasingly complex, security threat to the workman is also more and more big, therefore research and develop the key technology of critical equipment in China deep and the high-risk resource exploitation, for efficient, the safe working of coal resources in China provides technology and equipment to support, to avoid or reduce the generation of great personnel's injury in the underground mining to improving the producing capacity of coal resources in China, ensure safe coal, high-efficiency mining has important practical significance and strategic importance.For this reason, ultra-thin coal seam coal-face operating regulation must clear and definite supporting and the roof control method, forbids the operation of sky top.To progressively eliminate wooden prop and metal mainstay supporting, improve the technology and equipment level of ultra-thin coal seam safe working.
Summary of the invention
Greater than the coal seam of 0.8m combine adopt tradition adopt four-bar linkage structure pattern hydraulic support with, these hydraulic supports are realized when mining height 800mm is above easily, combine the precedent of adopting but be not used in ultra-thin coal seam.The upgrading that is developed as the backward production practice of ultra-thin coal seam of the novel comprehensive mining hydraulic bracket of ultra-thin coal seam, realize that comprehensive the adopting of ultra-thin coal seam provides technology and material guarantee, satisfied the raising requirement of ultra-thin coal seam comprehensive mechanized coal mining method, in practice, can be good at solving a series of relevant issues of exploitation of ultra-thin coal seam, change the present situation after ultra-thin coal seam exploitation side deals with, mechanical mining space safely and efficiently is provided, solve the comprehensive key technical problem of adopting of ultra-thin coal seam from technology and technical equipment perfectly, comprise the fully-mechanized mining working personal security, conveyer is passed automatically, hydraulic support moves frame automatically, realize the cycle operation of ultra-thin coal seam fully-mechanized mining working, for ultra-thin coal seam is realized having created precondition with unmanned automatically working faces such as machines automatically.
The objective of the invention is to break the situation that ultra-thin coal seam does not have the comprehensive mining hydraulic bracket supporting, research and development adapt to the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam, realizing the ultra-thin coal seam comprehensive mechanical coal mining. the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam characteristics are in light weight, structure design thinking novelty. light and handy compact, realize the big mining height excursion of support by structure design, the effective supporting section supporting of column efficient height, safety is good.
For realizing comprehensive the adopting under the ultra-thin coal seam condition, the invention is characterized in:
It mainly comprises back timber, and base, and the direct caving shield between connection and back timber and the base have been cancelled the quadric chain of conventional stent.The agent structure width can be designed as 1.25m, and various width such as 1.5m or 1.75m and conveyer adapt to all can.Be hinged with oil cylinder between back timber and the base, back timber is hinged by connecting portion realization and base, all arrange one about column, the back timber position and attitude is adjusted by back timber and the hinged oil cylinder of connecting portion, oil cylinder can be symmetrically arranged or single-row layout, and this oil cylinder still can be described as balance jack.These hydraulic rack structure characteristics have determined to be articulated in the column trace change in length of back timber and base, influence support height height change in a big way, and bigger effective support force can be provided.
Described top beam rear end and connecting portion front end are hinged, and articulated form can be designed as formal dress or the anti-form of adorning.Adjusting oil cylinder (balance jack) between connecting portion and the back timber will have enough adjustment strength, can realize the strong bit manipulation to back timber, described adjusting oil cylinder (balance jack) with all can positive and negative connection of hinged employing of back timber.Connecting portion adopts articulated form with being connected of base, the described various mode that is articulated and connected is can realize the effective support shield of work plane, and anti-leak-stopping cash string cash satisfies unit advance, the smooth frame that moves of adjacent stent contact portion does not scratch, and the low level sebific duct arranges that not having holding is key element.
We have analyzed the comprehensive characteristics of adopting under the ultra-thin coal seam condition, the position of considering pedestrian space and coal-winning machine, transporter, support concerns requirement, reduce the back timber nose thickness, for coal-winning machine coal cutting and pedestrian create conditions, increase the set cap front end and definitely screen height, guarantee the ventilation section, fully excavate supporting structure spare rear strength surplus, the thickness of front and rear part all is designed into the best size, thereby the stress of balance bracket structural member guarantees the requirement of violent intensity ore deposit pressure to structural member.
Reduce bracket base rear portion width simultaneously, greatly reduce base front end specific pressure, realize moving frame smoothly, support Design has absorbed the characteristics of four connecting rod hydraulic shield supports, has considered the actual conditions that unstable as thin as a wafer thickness seam mining is bigger to the Bracket in Thin Coal Seam height change especially, the magnification of utilizing frame type characteristics to amplify column, it is big to have effective support loads simultaneously, and supporting intensity is big, and stabilizing mechanism is reliable, take into account girdle top board condition, adapt to tight roof high strength ore deposit pressure and manifest factor.This support Design thinking novelty, the most important supporting of the fully-mechanized mining field blank of ultra-thin coal seam has been filled up in practicality, has broad application prospects.
Advantage of the present invention: compact conformation, in light weight, safe and reliable, supporting intensity is big, fills up to combine under the ultra-thin coal seam condition and adopts supporting field blank.Compliance is strong, and support height changes greatly, and is bigger for Coal Seam Thickness Change, and the more ultra-thin coal seam of tomography is all applicable.The novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam is simple and reliable for structure, change with less strut length, realize the bigger height change of support, particularly in the working depth scope, column is little than conventional stent column angle of inclination, the supporting intensity height, can be adapted to the ore deposit pressure and manifest bigger mine, the comprehensive mining machinery equipment investment is little, adopts, transports, an equipment weight is little, flexibility and reliability.
Description of drawings
Fig. 1 is the novel protected type comprehensive mining hydraulic bracket of a ultra-thin coal seam of the present invention structural representation
Fig. 2 is the base vertical view of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Fig. 3 is the back timber vertical view schematic diagram of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Fig. 4 is the back timber and the hinged oil cylinder schematic diagram of base of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Fig. 5 is the back timber and the connecting portion assembling schematic diagram of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Fig. 6 is the back timber thruster structural representation of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Fig. 7 is the connecting portion schematic diagram of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam
Wherein 1: back timber, 2: column, 3: regulate oil cylinder, 4: connecting portion, 5: base, 6: pass oil cylinder, 7: push rod, 8: thruster jack, 9: thruster guide rod, 10: the back timber side guard board.
The specific embodiment
Referring to Fig. 1, Fig. 4, Fig. 5, shown in Figure 7: the ultra-thin coal seam fully-mechanized mining working is with the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam, mainly comprise back timber 1 and base 5 that support cylinder and two ends thereof are hinged respectively, support cylinder 2 makes the maximum height of support reach designing requirement, support cylinder 2 adopts 2, and 2 become single being symmetrical arranged; Back timber 1 sidepiece is provided with figure back timber side guard board 10, for sealing and anti-down usefulness between frame, back timber side guard board 10 is hinged by the thruster jack 8 in 10 guide pegs and the back timber 1, and the novel protected type comprehensive mining hydraulic bracket of Fig. 6 ultra-thin coal seam thruster structure realizes flexible by means of the passing of thruster jack 8; Thrust gear has been arranged push rod 7 and has been passed oil cylinder 6 realization moving conveyors and try to stop people from fighting each other in the middle of the base 6; The support state is adjusted by means of regulating oil cylinder 3.
The novel protected type comprehensive mining hydraulic bracket of this ultra-thin coal seam has common four connecting rods shielding hydraulic support characteristics and performance, for ultra-thin coal seam comprehensive mechanization safety and high efficiency under the thickness instability condition provides condition, by adjusting devices such as oil cylinder 3 hinged and connecting portion and back timber, not only increased stabilizing mechanism intensity, at bracket base 5 internal placement sebific ducts, widen the anterior walkway of hydraulic support, increase the face-airing section, reduce the work plane windage, be the face gas dilution, enhancing productivity provides basic assurance, helps work plane and realizes safe and efficient production.
Claims (4)
1. the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam is characterized in that: hydraulic support is by back timber, and base, and direct compositions such as caving shield between connection and back timber and the base have been cancelled the quadric chain of conventional stent.Hydraulic support has two support cylinder supporting top beams of a row, and top beam rear end and caving shield are hinged, and caving shield lower end and base rear portion are hinged, and back timber is hinged with connecting portion by regulating oil cylinder (balance jack), to be used for adjusting the set cap state.This back timber and caving shield, base all can be designed as split or whole pattern.The novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam integral central is apart from adjusting with the conveyer chute.
2. caving shield and bracket base between its direct connection of the novel protected type comprehensive mining hydraulic bracket of ultra-thin coal seam as claimed in claim 1 and back timber and the base acutangulate hinged, and towards the front end rib direction of base, make back timber beam-ends movement locus be circular arc line less than 1/4th sections.
3. the adjusting oil cylinder (balance jack) between hinged and back timber and caving shield as claimed in claim 1 is arranged in the base both sides, and the middle-grade layout of base is passed oil cylinder and push rod device.
4. that ultra-thin coal seam novel protected type comprehensive mining hydraulic bracket back timber as claimed in claim 1 and caving shield can be provided with is one-sided, bilateral or side guard board is not set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255177 CN101943016A (en) | 2010-08-17 | 2010-08-17 | Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255177 CN101943016A (en) | 2010-08-17 | 2010-08-17 | Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
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| CN101943016A true CN101943016A (en) | 2011-01-12 |
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| CN 201010255177 Pending CN101943016A (en) | 2010-08-17 | 2010-08-17 | Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337891A (en) * | 2011-09-14 | 2012-02-01 | 天地科技股份有限公司 | Thin coal seam unmanned automated mining mode |
| CN102877877A (en) * | 2012-09-17 | 2013-01-16 | 中煤北京煤矿机械有限责任公司 | Up-mounted advancing mechanism and thin coal seam hydraulic support |
| CN110617096A (en) * | 2019-10-28 | 2019-12-27 | 陕西蓝山重工科技有限公司 | Hydraulic support for separate mining and transportation and filling mining of thin coal seam |
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| FR2156656A1 (en) * | 1971-10-02 | 1973-06-01 | Gewerk Eisenhuette Westfalia | |
| GB1381198A (en) * | 1971-09-28 | 1975-01-22 | Banyaszati Kutato Intezet | Advanceable shield support for mines |
| US3898845A (en) * | 1973-01-31 | 1975-08-12 | Gewerk Eisenhuette Westfalia | Mineral mining installations |
| CN2908786Y (en) * | 2006-05-20 | 2007-06-06 | 枣庄矿业（集团）有限责任公司第二机械厂 | High seam shield hydraulic support |
| CN101037945A (en) * | 2007-04-27 | 2007-09-19 | 郑州煤矿机械集团有限责任公司 | 6.3 meters high support covering hydraulic support |
| CN201025051Y (en) * | 2007-03-27 | 2008-02-20 | 郑州煤矿机械集团有限责任公司 | Cover type hydraulic supporter |
| CN201062524Y (en) * | 2007-08-10 | 2008-05-21 | 郑州煤矿机械集团有限责任公司 | Two-post secured low-roof coal hydraulic bracket |
| CN202031618U (en) * | 2010-08-17 | 2011-11-09 | 天地科技股份有限公司 | Novel shield-type fully mechanized hydraulic support for thin seam |
-
2010
- 2010-08-17 CN CN 201010255177 patent/CN101943016A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1381198A (en) * | 1971-09-28 | 1975-01-22 | Banyaszati Kutato Intezet | Advanceable shield support for mines |
| FR2156656A1 (en) * | 1971-10-02 | 1973-06-01 | Gewerk Eisenhuette Westfalia | |
| US3898845A (en) * | 1973-01-31 | 1975-08-12 | Gewerk Eisenhuette Westfalia | Mineral mining installations |
| CN2908786Y (en) * | 2006-05-20 | 2007-06-06 | 枣庄矿业（集团）有限责任公司第二机械厂 | High seam shield hydraulic support |
| CN201025051Y (en) * | 2007-03-27 | 2008-02-20 | 郑州煤矿机械集团有限责任公司 | Cover type hydraulic supporter |
| CN101037945A (en) * | 2007-04-27 | 2007-09-19 | 郑州煤矿机械集团有限责任公司 | 6.3 meters high support covering hydraulic support |
| CN201062524Y (en) * | 2007-08-10 | 2008-05-21 | 郑州煤矿机械集团有限责任公司 | Two-post secured low-roof coal hydraulic bracket |
| CN202031618U (en) * | 2010-08-17 | 2011-11-09 | 天地科技股份有限公司 | Novel shield-type fully mechanized hydraulic support for thin seam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337891A (en) * | 2011-09-14 | 2012-02-01 | 天地科技股份有限公司 | Thin coal seam unmanned automated mining mode |
| CN102877877A (en) * | 2012-09-17 | 2013-01-16 | 中煤北京煤矿机械有限责任公司 | Up-mounted advancing mechanism and thin coal seam hydraulic support |
| CN110617096A (en) * | 2019-10-28 | 2019-12-27 | 陕西蓝山重工科技有限公司 | Hydraulic support for separate mining and transportation and filling mining of thin coal seam |
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Application publication date: 20110112 |