CN101457652A - Overlarge mining height hydraulic support - Google Patents
Overlarge mining height hydraulic support Download PDFInfo
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- CN101457652A CN101457652A CNA2008101063731A CN200810106373A CN101457652A CN 101457652 A CN101457652 A CN 101457652A CN A2008101063731 A CNA2008101063731 A CN A2008101063731A CN 200810106373 A CN200810106373 A CN 200810106373A CN 101457652 A CN101457652 A CN 101457652A
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- 238000005065 mining Methods 0.000 title claims abstract description 74
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 238000012546 transfer Methods 0.000 claims description 12
- 210000001015 abdomen Anatomy 0.000 claims description 9
- 241001125879 Gobio Species 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 13
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- 238000012216 screening Methods 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
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- 239000002131 composite material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
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- 230000004888 barrier function Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The invention relates to a super large mining height hydraulic support which comprises an opened rigid integrated base, wherein, two double-telescopic hydraulic upright posts are arranged on the base, and the upper ends of the upright posts are connected with a top beam; the rear of the top beam is connected with a screening beam; an edge protection device is connected with the telescopic beams which are in inner extension connection with the top beam; a balance jack is arranged between the top beam and the screening beam; the screening beam and the base are respectively connected with the front and rear connecting rods; a push jack is arranged on the base and is connected with a push rod; the front part of the top beam is provided with the telescopic beams, the middle part of the top beam is provided with a falling prevention device for the support, and bottom lifting, skid prevention and support regulation devices are arranged on the base; and a levelling device is arranged on a cross binding head on the front end of the push rod; the support adopts 2-meter width between centers, the maximum height ranges from 6.3 meters to 7.5 meters, and the front end of the telescopic beam is provided with a third-stage edge protection device which is not lower than half of the mining height. The support has obvious effects of controlling the wall caving of the coal wall of a super thick coalseam, the roof fall of the ceiling, and the stability of the hydraulic support.
Description
Technical field
The present invention relates to a kind of overlarge mining height hydraulic support, belong to field of mining.
Background technology
Big mining height full-seam mining is mined and is used for the exploitation method that thick coal-layer mining is a kind of economical rationality, not only can reduce tunnelling and work plane lapping workload, but also can improve coal recovery rate, improve coal-winning machine hilted broadsword coal cutting amount, reduce percentage of shale content, create conditions for improving the working surface production ability.In recent years, China has carried out large-scale research of technique to big mining height full-seam mining technology, has solved the key issue of thick coal-layer mining below 6 meters, and open height that mine uses has reached 6.3 meters.At present, domestic have a plurality of mines to use big mining height full-seam mining coal-mining method exploitation high seam below 6 meters, and obtained unprecedented effect, there are a plurality of big mining height full-seam mining collieries to realize the level of annual production more than ten million ton, for the high seam pit mining provides the foundation that can use for reference, also make big mining height full-seam mining method become first-selection with conditions of similarity mine.
Stablize high seam for 4～6m, big mining height full-seam mining is the most rational coal-mining method.And the general at present caving coal technology that adopts of the exploitation of 6～7.3 meters special thick middle hard coal seam, and mining areas such as China Inner Mongol, Shaanxi, Shanxi and Ningxia, 6～7.3 meters special thick hard coal seam reserves are huge, its exploitation method is great technical barrier, at present, these areas are generally adopted 6 meters with mining height coal-mining method next time, cause the huge wasting of resources.Continuous increase along with the height of mining, work plane wall caving and the aggravation of roof fall phenomenon, particularly mining height is greater than more than 6.3 meters the time, be used for the supporting coal mine roof plate and safeguard that the big mining hydraulic bracket height of fully-mechanized mining working safety need reach more than 6.5 meters, the stability of this overlarge mining height hydraulic support and protector have become the key factor that such hydraulic support design is considered, also become one of key factor of restriction super large mining height coal winning technology development.
Summary of the invention
The object of the present invention is to provide a kind of bearing height can reach 6.3～7.5 meters overlarge mining height hydraulic support, solve the stable and protection question of super large mining height type hydraulic support, make the type support can be adapted to 6～7.3 meters super high seam full-seam mining exploitations.
For achieving the above object, the present invention takes following technical scheme:
A kind of overlarge mining height hydraulic support comprises easy opened rigid unitary base, two of symmetric arrangement two flexible hydraulic vertical props on base, and the hydraulic vertical prop upper end joins with the needling of back timber; Described back timber is an integral top beam, and the rear portion joins by bearing pin and caving shield; The wall supporting device links to each other with extensible canopy; Extensible canopy and back timber are stretched the formula connected mode in being; Be provided with one or two balance jack between described back timber and the caving shield; Caving shield is connected with front and rear connecting rods respectively with base, forms four link motion mechanisms of control hydraulic support stability; Described base is provided with lifts end jack, lifts end jack piston rod end connection and lifts end piston shoes, and formation can be finished the bottom lifting device that bracket base lifts; The passing jack is set on the described base, passes jack and be connected with push rod, formation can be finished the push unit that support advances; Described push rod links to each other with the work plane drag conveyor by the cross connector, on the cross connector and between the work plane scratch board conveyor levelling device is set; Described extensible canopy front end is provided with the three-stage side protecting device;
It is characterized in that: described back timber front portion is provided with extensible canopy, described back timber belly is provided with the support tilting prevention device, that base is provided with is anti-skidding, transfer rack device, described wall supporting device is the three-stage side protecting device, this support adopts 2 meters center to center distance, maximum height is between 6.3～7.5 meters, and the extensible canopy front end is provided with the three-stage side protecting device that is not less than 1/2nd mining heights.
A kind of optimized technical scheme is characterized in that, described extensible canopy is stretched formula in being, it is plugged in the set case chamber of back timber leading section, the extensible canopy jack of displacement before and after this extensible canopy rear end is connected with and can does.
A kind of optimized technical scheme is characterized in that the needling on the described back timber is positioned at the postmedian of back timber, to the ratio of back timber front end and rear end be 2.5:1～2.6:1.
A kind of optimized technical scheme is characterized in that, all has the active side backplate on back timber and the caving shield.
A kind of optimized technical scheme, it is characterized in that described tilting prevention device comprises anti-beaming, connector, anti-down jack, regulate mining chain and be connected first-classly, described anti-beaming is fixed on the back timber by flange arrangement, connect first end and be connected with anti-beaming, the other end connects anti-down jack; Anti-down jack links to each other with connector by regulating mining chain, and connector links to each other with another support of work plane, forms stable groups of holders, prevents the frame that falls of overlarge mining height hydraulic support.
A kind of optimized technical scheme, it is characterized in that, described bottom lifting device comprises to be lifted end jack, guide slip shoe and connects bearing pin, wherein, two gudgeons are arranged at the cylinder barrel bottom of lifting end jack, it is hinged by gudgeon and base, lifts on the end jack piston rod and by bearing pin guide slip shoe is housed, and this is lifted end guide slip shoe and slides in the guiding device of base.
A kind of optimized technical scheme, it is characterized in that, on the described cross connector and the levelling device structure between the work plane scratch board conveyor as follows, the piston rod of leveling jack or cylinder barrel are connected with the cross connector by universal connector, and the other end of leveling jack links to each other with drag conveyor by universal connector.
A kind of optimized technical scheme, it is characterized in that, described three-stage side protecting apparatus structure is as follows, one-level face guard and extensible canopy front end are hinged, connect two one-level wall supporting jack between one-level face guard and the joist, one-level face guard front end and secondary face guard are hinged, connect two secondary wall supporting jack by two groups little four-bar linkage structures between one-level face guard and the secondary face guard, described little quadric chain is made up of stock and quarter butt, described secondary face guard belly is provided with the three-stage side protecting plate by sliding rail, be connected with the three-stage side protecting jack between secondary face guard and the three-stage side protecting plate, three-stage side protecting device height can reach 4m, can effectively prevent coal wall caving, in the described three-stage side protecting device, can become with back timber+5 ° of angles after the one-level face guard launches, effectively the temporary lining top board with protect rib, can become 180 ° of angles with back timber after the withdrawal, be close to back timber; The secondary face guard adopts four-bar linkage structure to be connected with secondary wall supporting jack, can be parallel after the expansion with the one-level face guard, and effective wall supporting, it is overlapping that the secondary face guard can be rolled over 180 ° and one-level face guard during withdrawal; The three-stage side protecting plate is a kind of telescopic structure, stretches out effective wall supporting height that the back increases the wall supporting device, can be recovered in the secondary face guard after the withdrawal.
A kind of optimized technical scheme, it is characterized in that, described anti-skidding, to transfer rack device be to connect accent frame jack by cross head on the base propons, transfer the frame jack to be connected with cross head or transfer the frame jack by mining chain adjusting after be connected with cross head again, cross head directly is connected the anti-skidding, anti-down of realization support with next support, a side of base is equipped with two accent frame jack simultaneously, is used to regulate the position of support.
Advantage of the present invention is:
The present invention is a kind of two column protected type overlarge mining height hydraulic support, its protector designs at super high seam full-seam mining coal winning technology, its stabilising arrangement considers that the overlarge mining height hydraulic support height designs greater than the stable hidden danger after 6.3 meters, and its outstanding feature is: can satisfy 6 meters～7.3 meters super high seam full-seam mining coal-face supporting demands.Also have following advantage:
(1) three-stage side protecting device, can be in time strong live sufficiently high rib, prevent coal wall caving;
(2) cantilever extension can be after the coal-winning machine coal cutting, and immediate support exposes top board, prevents roof fall;
(3) the support tilting prevention device is housed on the back timber, prevents that overlarge mining height hydraulic support from falling frame;
(4) the accent rack device is housed on the base, is used to adjust backing positions, prevent that support stings frame.
(5) on the base bottom lifting device is housed, when support is passed, the base front end is lifted, accelerate the support fltting speed;
(6) levelling device can be controlled the angle of hydraulic support and coal-winning machine, prevents coal-winning machine cut support in the cut process.
Description of drawings
Fig. 1 overlarge mining height hydraulic support schematic diagram
The local enlarged diagram of Fig. 2 three-stage side protecting device
Fig. 3 overlarge mining height hydraulic support is anti-skidding, the local enlarged diagram of accent rack device
The local enlarged diagram of Fig. 4 overlarge mining height hydraulic support tilting prevention device
The local enlarged diagram of Fig. 5 overlarge mining height hydraulic support bottom lifting device
The local enlarged diagram of Fig. 6 overlarge mining height hydraulic support levelling device
The specific embodiment
Overlarge mining height hydraulic support is referring to shown in Figure 1: a kind of two column protected type overlarge mining height hydraulic support, mainly form by three-stage side protecting device 1, extensible canopy 2, joist 3, back timber 4, back timber side guard board 5, tilting prevention device 6, caving shield 7, caving shield side guard board 8, front rod 9, back link 10, base 11, shoe 12, accent rack device 13, push unit 14, bottom lifting device 15 and parts such as extensible canopy jack 16, column 17, balance jack 18 and thruster jack 19.
Two column protected type overlarge mining height hydraulic support structure of the present invention is composed as follows: by the back timber 4 and the base 11 at two symmetrical column 17 hinged its two ends; Back timber 4 bellies are connected support tilting prevention device 6 by bearing pin with mining chain, stretch formula extensible canopy 2 in the front portion is provided with, and rear end and caving shield 7 are hinged; Hinged between back timber 4 and the caving shield 7 with two balance jack 18; Hinged front rod 9 and back link 10 are formed quadric chain between caving shield 7 and the base 11; Base 11 is the easy opened unsplit bedplate, and gear installs and is equipped with push unit 14, one sides and is provided with and transfers rack device 13 therein, arranges bottom lifting device 15 near the base propons is middle-grade, on its propons by bearing pin articulated stand shoe 12; The hinged three-stage side protecting device 1 of extensible canopy 2 front ends, the belly track is provided with joist 3, described push unit links to each other with work plane drag conveyor 1001 by the cross connector, and levelling device 100 is set on the cross connector 1002 and between the work plane scratch board conveyor 1001.
Set cap 4 of the present invention adopts integral top beam, or claims whole top rigidity back timber.Have active side backplate 5 on the back timber 4, for the usefulness of sealing and anti-down steady between frame.Active side backplate 5 is hinged by the thruster jack 19 in guide peg and the back timber 4, and is flexible by means of the passing realization of thruster jack 19.Back timber 4 and column 17 link positions are 2.5:1～2.6:1 apart from the ratio of back timber front end and rear end.
Described extensible canopy 2 is stretched formula in being, it is plugged in the set case chamber of back timber 4 leading sections, the extensible canopy jack 16 of displacement before and after these extensible canopy 2 rear ends are connected with and do.
Caving shield 7 also has the active side backplate.The active side backplate 8 of caving shield 7, structure is identical with the active side backplate basic structure of back timber.
Column 17 adopts double-telescopic upright post, is arranged in the position of the close longitudinal midline of back timber 4, base 11, and is hinged with back timber 4 and base 11, gives top board with setting load, bears top board load and dynamic pressure simultaneously, is the main hydraulic pressure support component of support.Double-telescopic upright post is equipped with the bottom valve (one way valve) of a stainless steel in the bottom of first-stage cylinder, the cylinder mouth adopts card key formula thread connection and the sealing of unidirectional polyurethane composite sealing ring, on piston, directly leave sealed groove and guide ring, groove, sealing ring adopts two-way polyurethane composite sealing ring, the vat bottom is spherical, both sides tape shape otic placode, spacing by pressing plate.Column cap is the sphere that has blind hole, connects with pin block.
Fig. 2 is the three-stage side protecting apparatus structure schematic diagram among the present invention, and one-level face guard 20 is hinged with extensible canopy 2 front ends; Connect two one-level wall supporting jack 21 between one-level face guard 20 and the joist 3; One-level face guard 20 front ends and secondary face guard 22 are hinged; Connect two secondary wall supporting jack 23 by two groups little four-bar linkage structures between one-level face guard 20 and the secondary face guard 22; Described little quadric chain is made up of stock 24 and quarter butt 25; Described secondary face guard 22 bellies are provided with three-stage side protecting plate 26 by sliding rail, are connected with three-stage side protecting jack 27 between secondary face guard 22 and the three-stage side protecting plate.Three-stage side protecting device height can reach 4m, can effectively prevent coal wall caving.In the described three-stage side protecting device 1: after one-level face guard 20 launches can with 4 one-tenths of back timbers+5 ° angle, effectively the temporary lining top board with protect rib, after the withdrawal can with 4 one-tenth 180 ° of angles of back timber, be close to back timber 4; The secondary face guard adopts four-bar linkage structure to be connected with secondary wall supporting jack 23, can be parallel after the expansion with one-level face guard 20, and effective wall supporting, it is overlapping that secondary face guard 22 can be rolled over 180 ° and one-level face guard 20 during withdrawal; Three-stage side protecting plate 26 is a kind of telescopic structures, stretches out effective wall supporting height that the back increases the wall supporting device, can be recovered in the secondary face guard 22 after the withdrawal.
Fig. 3 is that overlarge mining height hydraulic support is anti-skidding, accent rack device 13 schematic diagrames, as shown in the figure, described anti-skidding, to transfer rack device be to connect accent frame jack 122 by cross head 121 on base 11 propons, transfer frame jack 122 to be connected with cross head 123 or transfer frame jack 122 by mining chain adjusting after be connected with cross head 123 again, cross head 123 directly is connected the anti-skidding, anti-down of realization support with next support, a side of base 11 is equipped with two accent frame jack 122 simultaneously, is used to regulate the position of support.
Fig. 4 is the local enlarged diagram of overlarge mining height hydraulic support tilting prevention device, as shown in the figure, at the belly of back timber 4 support tilting prevention device 6 is housed, and tilting prevention device 6 comprises anti-beaming 61, connector 63, anti-down jack 64, regulates mining chain 65 and connector 66 etc.; Anti-beaming 61 is fixed on the back timber 4 by the flange arrangement shown in 62; Connector 63 1 ends are connected with anti-beaming 61, and the other end connects anti-down jack 64; Anti-down jack 64 links to each other with connector 66 by regulating mining chain 65; Connector 66 next frame support of phase downlink connection work plane form stable support net, prevent the frame that falls of overlarge mining height hydraulic support.
As shown in Figure 5, described bottom lifting device 15 comprises to be lifted end jack 151, guide slip shoe 152 and connects bearing pin 153, wherein, two gudgeons 155 are arranged at cylinder barrel 154 bottoms of lifting end jack 151, it is hinged by gudgeon 155 and base 11, lift on end jack 151 piston rods and by bearing pin 153 guide slip shoe 152 is housed, this is lifted in the guiding device 111 of end guide slip shoe 152 on base 11 and slides.
As shown in Figure 6, levelling device 100 structures on the described cross connector 1001 and between the work plane scratch board conveyor 1002 are as follows, cross connector 1001 is provided with a universal connector and is connected with the piston rod or the cylinder barrel 1003 of leveling jack 1004, and the other end of leveling jack 1004 links to each other with drag conveyor 1002 by universal connector.
More than specifically described embodiment of the present invention, but it should be appreciated by those skilled in the art, in the spirit and scope of the invention, can make various changes and modifications.
Claims (9)
1. an overlarge mining height hydraulic support comprises easy opened rigid unitary base, two of symmetric arrangement two flexible hydraulic vertical props on base, and the hydraulic vertical prop upper end joins with the needling of back timber; Described back timber is an integral top beam, and the rear portion joins by bearing pin and caving shield; The wall supporting device links to each other with extensible canopy; Extensible canopy and back timber are stretched the formula connected mode in being; Be provided with one or two balance jack between described back timber and the caving shield; Caving shield is connected with front and rear connecting rods respectively with base, forms four link motion mechanisms of control hydraulic support stability; Described base is provided with lifts end jack, lifts end jack piston rod end connection and lifts end piston shoes, and formation can be finished the bottom lifting device that bracket base lifts; The passing jack is set on the described base, passes jack and be connected with push rod, formation can be finished the push unit that support advances; Described push rod links to each other with the work plane drag conveyor by the cross connector, on the cross connector and between the work plane scratch board conveyor levelling device is set; Described extensible canopy front end is provided with the three-stage side protecting device;
It is characterized in that: described back timber front portion is provided with extensible canopy, described back timber belly is provided with the support tilting prevention device, that base is provided with is anti-skidding, transfer rack device, described wall supporting device is the three-stage side protecting device, this support adopts 2 meters center to center distance, maximum height is between 6.3～7.5 meters, and the extensible canopy front end is provided with the three-stage side protecting device that is not less than 1/2nd mining heights.
2. overlarge mining height hydraulic support according to claim 1 is characterized in that described extensible canopy is stretched formula in being, it is plugged in the set case chamber of back timber leading section, this extensible canopy rear end be connected with can before and after the extensible canopy jack of displacement.
3. overlarge mining height hydraulic support according to claim 1 is characterized in that the needling on the described back timber is positioned at the postmedian of back timber, to the ratio of back timber front end and rear end be 2.5:1～2.6:1.
4. overlarge mining height hydraulic support according to claim 1 is characterized in that, all has the active side backplate on back timber and the caving shield.
5. according to each described overlarge mining height hydraulic support in the claim 1～4, it is characterized in that described support tilting prevention device is arranged on the belly of back timber, this tilting prevention device comprises anti-beaming, connector, anti-down jack, regulates mining chain and connector; Described anti-beaming is fixed on the back timber by flange arrangement, connects first end and is connected with anti-beaming, and the other end connects anti-down jack, and anti-down jack links to each other with connector by regulating mining chain; Connector links to each other with another support of work plane.
6. according to each described overlarge mining height hydraulic support in the claim 1～4, it is characterized in that, described three-stage side protecting apparatus structure is, one-level face guard and extensible canopy front end are hinged, connect two one-level wall supporting jack between one-level face guard and the joist, one-level face guard front end and secondary face guard are hinged, connect two secondary wall supporting jack by two groups little four-bar linkage structures between one-level face guard and the secondary face guard, described little quadric chain is made up of stock and quarter butt, described secondary face guard belly is provided with the three-stage side protecting plate by sliding rail, is connected with the three-stage side protecting jack between secondary face guard and the three-stage side protecting plate; In the described three-stage side protecting device, after the one-level face guard launches can with back timber angle at 45, can become 180 ° of angles with back timber after the withdrawal, be close to back timber, the secondary face guard adopts four-bar linkage structure to be connected with secondary wall supporting jack, can be parallel with the one-level face guard after the expansion, during withdrawal the secondary face guard can roll over 180 ° with the one-level face guard overlapping, the three-stage side protecting plate is a kind of telescopic structure, stretches out effective wall supporting height that the back increases the wall supporting device, can be recovered in the secondary face guard after the withdrawal.
7. according to each described overlarge mining height hydraulic support in the claim 1～4, it is characterized in that, described anti-skidding, to transfer rack device be to connect accent frame jack by cross head on the base propons, transfer the frame jack to be connected with cross head or transfer the frame jack by mining chain adjusting after be connected with cross head again, cross head directly is connected with next support, and a side of base is equipped with two accent frame jack simultaneously.
8. overlarge mining height hydraulic support according to claim 1, it is characterized in that, described bottom lifting device comprises to be lifted end jack, guide slip shoe and connects bearing pin, wherein, two gudgeons are arranged at the cylinder barrel bottom of lifting end jack, it is hinged by gudgeon and base, lifts on the end jack piston rod and by bearing pin guide slip shoe is housed, and this is lifted end guide slip shoe and slides in the guiding device of base.
9. overlarge mining height hydraulic support according to claim 1, it is characterized in that, levelling device structure between described cross connector and the work plane scratch board conveyor is as follows, leveling jack piston rod or cylinder barrel are connected with the cross connector by universal connector, and the other end of leveling jack links to each other with drag conveyor by universal connector.
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| CN2008101063731A CN101457652B (en) | 2008-05-13 | 2008-05-13 | Overlarge mining height hydraulic support |
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| CN2008101063731A CN101457652B (en) | 2008-05-13 | 2008-05-13 | Overlarge mining height hydraulic support |
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| CN101457652A true CN101457652A (en) | 2009-06-17 |
| CN101457652B CN101457652B (en) | 2010-12-08 |
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| CN102011603A (en) * | 2010-10-30 | 2011-04-13 | 煤炭科学研究总院太原研究院 | Coal mine underground remote control triangle protective shield |
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