CN1194329A - Shield support for thick coal layer - Google Patents
Shield support for thick coal layer Download PDFInfo
- Publication number
- CN1194329A CN1194329A CN98105773A CN98105773A CN1194329A CN 1194329 A CN1194329 A CN 1194329A CN 98105773 A CN98105773 A CN 98105773A CN 98105773 A CN98105773 A CN 98105773A CN 1194329 A CN1194329 A CN 1194329A
- Authority
- CN
- China
- Prior art keywords
- back timber
- shield
- caving
- shield support
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims description 39
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The shield support featuring a lemniscate gear (4), a fractional shield (3) with ground slide (2) and a cover shield (5) as well as hydraulic stands (6, 7) be it like a withdrawal shield or classical shield for cutting extraction is used in cases when between the frontal moving cover shield (20) and the fractional shield (3) there is a short cover (22) inserted featuring a knuckle arrangement (23, 24) where the short cover (22) as well as the fractional shield (3) have its bed (17, 25) for the hydraulic stands (6, 7). The version featuring the short cover (22) is a classical shield, while the other without is a withdrawal shield. Both versions feature large supporting forces of the supporting assembly and a preferably large driving width between the hydraulic stands (6, 7) and the fractional shield (3).
Description
The present invention relates to a kind ofly have the shield support of quadric chain, caving shield, base and back timber and guarantee to the hydraulic vertical prop in the space of rib and the shield support of spacing jack, be used to exploit mineral, be particularly useful for high seam, at this moment can make back timber most advanced and sophisticated by caving coal jack around hinge inclination realization caving coal.
Shield support is used to guarantee the semiclosed carrier unit of using for the coal wall to the space of rib and face conveyor exactly.By hydraulic vertical prop, back timber and base are separated, and exert pressure towards top board and base plate, at this moment back timber and caving shield are handled by quadric chain.This quadric chain just makes the back timber tip carry out approximately moving perpendicular to bedding when column descends.People have been familiar with multiple shield support, wherein for high seam, that is to say for example to surpass three meters high seam shield support that its caving shield for example disposes closed window, and coal that deposit or fragmentation together is released so that the there is composed.People are with also having of knowing, decline back timber point, and coal is just put to conveyer by the back timber point so like this, and transports by conveyer, and this and coal-winning machine act synergistically usually.This shield support for example also is used for the underground mining of brown coal.Problem wherein is, a kind of so specialized support can only be used for such supporting, and especially when working thickness changes, perhaps is subjected to violent influence, perhaps can not use at all.For known so-called sublevel caving hydrau lic support, its shortcoming is that the height of cutting coal is less relatively, and owing to using back timber to cause rack bearing power to reduce.
Task of the present invention is, invents a kind of shield support, and it can become traditional shield support by limited structure no-load voltage ratio again as sublevel caving hydrau lic support, is used for the cutting exploitation safely.
This task solves by following method according to the present invention, promptly adopt a kind of short back timber, it is attached to regulates flexible back timber or caving shield, short back timber both sides respectively have a cover articulated mounting to cooperate with existing articulated mounting respectively, also have and hold hole connection needling similar, that be used for hydraulic vertical prop in a kind of caving shield.
A kind of adjusting of such design back timber that stretches can be with or not be with back timber to use, and this depends on that described shield support is as sublevel caving hydrau lic support, or is used for the cutting exploitation as traditional shield support.As sublevel caving hydrau lic support, introduced at hinge and regulate the short back timber of flexible back timber between upright and will remove, and hydraulic vertical prop is connected on the caving shield.Such possibility is so just arranged, by back timber tip caving coal the time, need not shrink column, whole back timber is tilted, perhaps tilt to 60 °.The loss of supporting force does not appear.This sublevel caving hydrau lic support does not have main canopy according to traditional connotation, and the flexible back timber of the adjusting of only introducing to some extent, it is directly connected on the hinge of caving shield.Obtained higher bracket leg load so on the whole and safe passage has been arranged, so even when back production and caving coal, also can advance safely at work plane in the hydraulic vertical prop back.In addition, be also advantageous in that, by means of this scheme, the height of coal cutting to be cut is the height when using present sublevel caving hydrau lic support obviously, and the dash section has also obviously enlarged, and this is by diluting biogas concentration significantly and improving ventilation condition on the whole, and is especially noticeable.
According to a kind of suitable embodiment of the present invention, regulate flexible back timber and directly or through the short back timber of centre connection be connected with the hinge of caving shield.When on the hinge that is directly connected to caving shield, be exactly a kind of sublevel caving hydrau lic support, and when connecting described short back timber and the corresponding layout of hydraulic vertical prop in the centre, just realized being used for traditional shield support that cutting type is mined.The work of required for this reason repacking structure is few especially, so even a kind of such transformation between the productive life, just in work plane, also can carry out certainly.Therefore, when running into the corresponding geological structure, especially when thickness reduced, these two kinds of exploitation methods in fact just can alternately realize.The middle short back timber that connects makes the shield support of following proposal become possibility, and promptly hydraulic vertical prop can be put into below the short back timber, and purpose provides a kind of traditional shield support that is used for cutting type mining, and this support preferably adopts " instant support system ".If hydraulic vertical prop is positioned on short back timber or the caving shield and leans near the caving shield hinge, that will reach very high rack bearing power.Here remind and point out, when hydraulic vertical prop props up in caving shield, just realized sublevel caving hydrau lic support, and when hydraulic vertical prop props up in the weak point back timber, realized traditional shield support.In both cases, reach as described above, the selection of hydraulic vertical prop position make caving shield and short back timber or and regulate in the hinge area between the flexible back timber, forms a kind of connection as far as possible closely.
In order to optimize the stability of this shield support, especially when adopting the form of sublevel caving hydrau lic support, should make flexible back timber of adjusting or short back timber that a pin joint is arranged, be used for being articulated and connected with caving shield, have the spacing jack that strides across hinge simultaneously, when the flexible back timber of it and adjusting is connected, simultaneously just as caving coal jack.The latter means, by spacing jack, makes the flexible back timber of adjusting tilt to 60 ° of angles that the front was carried, and purpose is to guarantee the caving coal.Especially also have in order to realize traditional shield support, when short back timber connected in the centre, this caving coal jack was simultaneously also here as spacing jack.In order to realize described limit function, at this moment do following design, promptly the pin joint that is used for spacing jack is arranged in the needling scope of hydraulic vertical prop.Regulate this special hinged of flexible back timber and support simultaneously by spacing jack, this has just guaranteed under any circumstance, when especially not having inbreak on caving shield, can both guarantee described stability.This situation can be brought tangible problem to existing sublevel caving hydrau lic support, and just can not for the sublevel caving hydrau lic support of being introduced here.
Be designed to outstanding dihedral annex below back timber and short back timber if be used for the pin joint of spacing jack, it also is used as the hinged of balance jack simultaneously, has so just realized a kind of simple of spacing jack and the connection of safety.Therefore just also provide possibility for the common connection of balance jack, this balance jack is essential when connecting short back timber in the centre.Because the special arrangement of this dihedral annex, thereby can realize adjustment transformation more simply from sublevel caving hydrau lic support to traditional shield support, wherein spacing jack is connected with caving shield, all the time be identical connection, therefore only relate to the connection of the extended part of opposite side, that is to say, perhaps be directly connected to and regulate on the flexible back timber, perhaps be connected on the short back timber.
Needed balance jack when the centre connects short back timber then strides across short back timber and regulates articulated mounting between the flexible back timber, and with regulate pin joint on the flexible back timber and the pin joint on the short back timber and be articulated and connected.In case need, can do to a certain degree to adjust to regulating flexible back timber, but at first be to make the reinforcement that is articulated and connected.In order not need much transformation adjustment in essence just to change another kind into from a kind of support, so above-mentioned measure is favourable and suitable.
If regulating a kind of collapsible forestope of packing on the flexible back timber, by it, the influence basin of regulating flexible back timber can also enlarge in addition, so no matter to be used for sublevel caving hydrau lic support and to be used for traditional shield support, all is good.This at first is beneficial when being used in sublevel caving hydrau lic support, and this is because at this moment the top coal can on purpose be put into, that is to say, superimposed or mobile by collapsible forestope, and make retraction of articulated telescopic beam or rise, and then it is tilted until amounting to 60 ° of angles.
Collapsible forestope has not only extended and has regulated flexible back timber, and it can also be used neatly simultaneously, this is because according to a kind of form of implementation of the present invention, and collapsible forestope is designed to exceed the cover plate seldom time of regulating the back timber that stretches up to the beam point when it, and is still collapsible.For this reason, it rotates around a kind of linkage, and can be by adjusting the jack co-operate, and like this, needed Hydraulic Elements expense just can advantageously keep within limits.
In order to guarantee that coal wall conveyer and mining machine are not only when implementing sublevel caving hydrau lic support but also when implementing traditional shield support, same safe situation is all arranged, the present invention does following design, and making base is telescopic in the side by supporting coal wall conveyer.Thereby just may make conveyer and coal-winning machine such location in fact always, promptly it with in fact can both move to always the back timber point below, that is to say, needn't stretch out the support protection domain.If the coal wall conveyer is attached to a bottom bracket, this bottom bracket is favourable by passing the insertion end that hydraulic pressure can be crossed bracket base in this case.So just guaranteed that each unitary part successfully leads to each other.
The present invention is because of following former thereby especially outstanding, a kind of shield support promptly is provided, in fact it can change structure, exactly, not only by back timber in the middle of middle the connection, just short back timber so that can be used as traditional shield support, and is used as sublevel caving hydrau lic support in the mulberry when not adopting this short back timber.Therefore also may have compliance, for example can between the productive life, just change different requirements.In addition, its advantage especially also is, owing to needn't shrink column back timber is reduced, so as sublevel caving hydrau lic support the time, in fact just may not have the loss of supporting force aspect.Adopt the whole back timber of regulating flexible back timber form, tilt to 60 ° around the hinge between back timber and the caving shield, very a large amount of coals can be emitted, that is to say that especially having avoided at first is the loss that occurs during the caving coal from caving shield, almost not loss.Be also advantageous in that a kind of such shield support is designed to be much more comfortable than known sublevel caving hydrau lic support, it not only provides better trafficability, but also has brought the safety of the methane gas of opposing effusion.Will point out that at last its stability is high, be to be achieved by the supporting extraordinary hinged and spacing jack of regulating flexible back timber.The absolutely not front end that is positioned at base of loading that is caused by support is so total energy guarantees above-mentioned required stability.Be used for the cutting exploitation if a kind of such sublevel caving hydrau lic support will be transformed into traditional shield support, be also advantageous in that improvement expenses is very little.Only requirement between back timber and caving shield or its hinged intermediate mass of loading onto short back timber form, has corresponding hinge arrangement because this short beam is surveyed two, and therefore this requirement just realizes easily.Hydraulic vertical prop all abuts against hinge separately and hinge arrangement is made the place, so obtain maximum support power, the flexible back timber of whole on the other hand adjusting descends or inclination around hinge.The present invention is the shield support of one kind of multiple purposes.
Draw this other details and advantage from the following description and accompanying drawing, in explanation and figure, introduced a kind of preferred embodiment and essential details and parts thereof pump.Be illustrated as
Fig. 1 represents with lateral view, is used to cut traditional shield support of exploitation,
The sublevel caving hydrau lic support that Fig. 2 represents with lateral view,
The sublevel caving hydrau lic support that view is represented before Fig. 2 a, as partial view,
Fig. 3 is caving shield and back timber and the enlarged drawing that is connected of the middle short back timber of installing.
Represented a kind of shield support in Fig. 1, it is called as the combination shield support.This shield support 1 and common form class are seemingly, has firm base 2, by caving shield 3 and the back timber 5 that quadric chain 4 and base 2 are hinged, it is by hydraulic vertical prop 6,7 stretchings between top board 11 and the base plate 12, and 6,7 of hydraulic vertical props are supported on the bracket base 2.Fig. 2 a has a situation of having shown relevant two hydraulic vertical props 6,7.
The special tectonic of shield support 1 makes that the open space 9 on rib 10 directions can keep, and caving shield 3 guarantees under the effect of spacing jack 8 that then shield support stops the inbreak rubble.
Here the coal seam of being delineated 13, to small part be by coal-winning machine 38 extraction, this moment coal transport by coal wall conveyer 37 then.
The shield support of being showed in Fig. 11 is known as the traditional shield support that is used to cut exploitation, Figure 2 shows that to construct identical shield support in principle, but as sublevel caving hydrau lic support.This means that the coal in coal seam 13 is by reducing by 14 avalanches of back timber point, coal is transported from work plane by coal wall conveyer 37 then equally like this.Carry out the reduction of back timber point 14 by means of putting coal jack 15, it also can be spacing jack 8 simultaneously.Also can adopt a kind of special caving coal jack.For this reason, the back timber 5 that is designed to regulate flexible back timber 20 connects with caving shield 3 by hinge 16.
Hydraulic vertical prop 6 is in embodiment as shown in Figure 2 in the needling 17 of caving shield 3, can clearly learn like this, if wish or necessary caving coal, so just can make the flexible back timber 20 of adjusting downward-sloping around hinge 16.
For layout as shown in Figure 1, that is to say for traditional shield support embodiment, regulate flexible back timber 20 same be designed to that sublevel caving hydrau lic support is the same as shown in Figure 2, can by adjustment with jack 21 towards the coal seam or the direction of rib 19 move.Adjust and use jack 21 to also have other function in addition, also will inquire into about these function back.
Regulating flexible back timber 20 installs with the short back timber 22 that both sides all have hinge structure 23,24, short back timber is mounted in to a certain extent to be regulated between flexible back timber and the hinge 16, purpose is to do other variation separately, just can be installed between the flexible back timber 20 of hinge 16 and adjusting.
For embodiment as shown in Figure 1, short back timber also can connect with needling 25, and purpose is to connect hydraulic vertical prop 6,7.
In order to connect or hinged spacing jack, in enlarged drawing as shown in Figure 3, on bottom surface 28, be provided with dihedral annex 29 as pin joint 27.This dihedral annex 29 suits simultaneously and is connected balance jack 30 in simultaneously, and its purposes is to strengthen hinge to connect 24, and is used in addition, makes the flexible back timber 20 of adjusting remain on a desired position.Balance jack is connected with another additional angle-shaped piece 32 in addition, and additional angle-shaped piece 32 is as second essential pin joint.Fig. 1 and 2 the two more clearly show, when not adopting short back timber 22, this additional angle-shaped piece 32 also is used for spacing jack 8 or caving coal jack 15 as pin joint.
The flexible back timber of adjusting both in structure as shown in Figure 1, had collapsible forestope 33 again in structure as shown in Figure 2, its tip 34 can be lifted the cover plate 35 above all the other back timbers 20 slightly, so that guarantee effective work of collapsible forestope 33.Collapsible forestope 33 is connected by the flexible back timber 20 of linkage 36 and adjusting, and it can be adjusted the effect of jack 21 simultaneously like this.
About coal wall conveyer 37 and coal-winning machine 38, the front relates to tout court.This two complete equipment is set on the side 39 of bracket base 2, and can it be moved on on the segment distance of more or less being separated by with bracket base 2 by passing jack 42 or a kind of special jack.Arrange the bottom bracket 40 see coal wall conveyer 37 above, be designed to can be nested telescopic with insertion end 41.
It is telescopic that hydraulic vertical prop 6,7 is designed to multinest, and Fig. 1 and Fig. 2 have shown this point, therefore can satisfy the thickness difference that may occur in this coal seam 13.Especially for as shown in Figure 2 sublevel caving hydrau lic support, the supporting of the extraordinary hinged and spacing jack 8 by regulating flexible back timber 20, having guaranteed has good stable when carrying out any kind of loading.The load piece that is caused by support can not be positioned at the front of the insertion end 41 of base 2, and it is irrelevant that it and hydraulic vertical prop 6,7 stretch out much degree in other words.For the embodiment that shows by Fig. 2, hydraulic vertical prop 6,7 has guaranteed the very high bracket leg load stated significantly regulating near the special arrangement the hinge 16 between flexible back timber 20 and the caving shield 3, and this is impossible for traditional up to now shield support.
The feature that all are enumerated also has the figure feature of expression separately, is all regarded as essence of the present invention individually or in combination.
Claims (11)
1. have quadric chain (4), caving shield (3), base (2) and back timber (5), and assurance is towards the hydraulic vertical prop (6 of the open space (9) of rib 10,7) and the shield support of spacing jack (8), be used to exploit mineral, in particular for the coal in the exploitation high seam (13), wherein, be the caving coal, back timber point (14) can tilt around hinge (16) by caving coal jack (25), this shield support is characterised in that, a short back timber (22) is attached to back timber (5) or the caving shield (3) that is designed to regulate flexible back timber (20), the both sides of short back timber (22) are hinge structure (23,24), the structure of the two is corresponding with existing hinge (16) separately, and short back timber (22) have one with the interior similar needling (25) of receiving socket (17) of caving shield (3), be used for hydraulic vertical prop (6,7).
2. shield support as claimed in claim 1 is characterized in that, regulates flexible back timber (20) and directly or by the middle short back timber (22) that inserts is connected with the hinge (16) of caving shield (3).
3. the described shield support of one of claim as described above is characterized in that, hydraulic vertical prop (6,7) is arranged in caving shield (3) or the short back timber (22), locates near the hinge (16) of caving shield (3).
4. the described shield support of one of claim as described above, it is characterized in that, regulate flexible back timber (20) or short back timber (22) and all have a pin joint (27,31), be used for caving shield (3) hinge-coupled and the spacing jack (8) that strides across hinge (16) is arranged, it is connected with the flexible back timber (20) of adjusting, simultaneously as caving coal jack (15).
5. shield support as claimed in claim 4 is characterized in that, the pin joint (27,31) that is used for spacing jack (8) is arranged in hydraulic vertical prop (6,7) and connects in needling (25, the 17) scope.
6. the described shield support of one of claim as described above, it is characterized in that, the pin joint (27 that is used for spacing jack (8), 31), the dihedral annex (29) that is designed to exceed back timber (5) or lacks the bottom (28) of back timber (22), the dihedral annex also is used for hinged balance jack (30) simultaneously.
7. shield support as claimed in claim 6, it is characterized in that, the arrangement of balance jack (30) is the hinge arrangement (24) that strides across between short back timber (22) and the hinged mobile back timber (20), and it is with the pin joint of regulating on the flexible back timber (20) (27), and hinged with the pin joint (31) on the short back timber (22).
8. the described shield support of one of claim as described above is characterized in that, regulating flexible back timber (20) has a kind of collapsible forestope (33).
9. shield support as claimed in claim 8 is characterized in that, the tip (34) of collapsible forestope (33) is collapsible into slightly always and surpasses till the cover plate (35) of regulating flexible back timber (20).
10. the described shield support of one of claim as described above is characterized in that being designed at the base (2) that is supporting coal wall conveyer (37) side can be nested telescopic.
11. shield support as claimed in claim 10 is characterized in that, coal wall conveyer (37) is placed on the bottom bracket (40), and its structure is can cross the insertion end (41) of bracket base (2) and move by passing jack (42).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712310A DE19712310A1 (en) | 1997-03-24 | 1997-03-24 | Lemniscate thick-seam shield of skid and roofbar |
| DE19712310.4 | 1997-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194329A true CN1194329A (en) | 1998-09-30 |
| CN1163661C CN1163661C (en) | 2004-08-25 |
Family
ID=7824439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB98105773XA Expired - Fee Related CN1163661C (en) | 1997-03-24 | 1998-03-24 | Shield support for thick coal layer |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR19980080478A (en) |
| CN (1) | CN1163661C (en) |
| DE (1) | DE19712310A1 (en) |
| SI (1) | SI9800089A (en) |
| TR (1) | TR199800524A3 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100497888C (en) * | 2006-03-27 | 2009-06-10 | 山东兖煤精益机电设备有限公司 | Machine-carried forepoling device |
| CN101333931B (en) * | 2008-07-31 | 2010-06-02 | 中国矿业大学 | Multiple layer hyperstatic hydraulic support |
| CN101333933B (en) * | 2008-07-31 | 2010-06-09 | 中国矿业大学 | Hyperstatic hydraulic support |
| CN101333928B (en) * | 2008-07-31 | 2010-06-09 | 中国矿业大学 | Multiple layer double-fork type hyperstatic hydraulic support |
| CN101333930B (en) * | 2008-07-31 | 2010-06-23 | 中国矿业大学 | Double-fork type hyperstatic hydraulic support |
| CN101864976A (en) * | 2010-06-07 | 2010-10-20 | 山东兖煤精益机电设备有限公司 | Airborne hydraulic multifunctional temporary support machine |
| CN101864972A (en) * | 2010-06-04 | 2010-10-20 | 中煤北京煤矿机械有限责任公司 | Small supporting point full-protection-type tunnel bracket and supporting method thereof |
| CN101358532B (en) * | 2007-07-31 | 2011-10-05 | 玛珂系统分析和开发有限公司 | Shield support |
| CN102337887A (en) * | 2010-07-18 | 2012-02-01 | 张有贤 | Overpass chain cutting tower type lump extraction support protection conveying type combined lump coal machine |
| CN103410517A (en) * | 2013-07-05 | 2013-11-27 | 中国煤炭科工集团太原研究院 | Fast driving stepping self-moving rubber belt conveyor tail supporting device |
| CN105626117A (en) * | 2016-02-25 | 2016-06-01 | 郑州四维矿业机械有限责任公司 | Hydraulic support and jacking beam for hydraulic support |
| CN111411950A (en) * | 2020-04-12 | 2020-07-14 | 陈文东 | A but, roll adjustment cutting formula coal device for coal mining |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457645B (en) * | 2008-04-30 | 2011-06-01 | 天地科技股份有限公司 | Thick coal seam stepwise full-seam coal mining method |
| DE202013100048U1 (en) | 2013-01-07 | 2013-01-30 | Maschinenfabrik Glückauf GmbH & Co. KG | Hydraulic shield removal |
-
1997
- 1997-03-24 DE DE19712310A patent/DE19712310A1/en not_active Withdrawn
-
1998
- 1998-03-20 KR KR1019980009573A patent/KR19980080478A/en not_active Application Discontinuation
- 1998-03-23 TR TR1998/00524A patent/TR199800524A3/en unknown
- 1998-03-23 SI SI9800089A patent/SI9800089A/en not_active IP Right Cessation
- 1998-03-24 CN CNB98105773XA patent/CN1163661C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100497888C (en) * | 2006-03-27 | 2009-06-10 | 山东兖煤精益机电设备有限公司 | Machine-carried forepoling device |
| CN101358532B (en) * | 2007-07-31 | 2011-10-05 | 玛珂系统分析和开发有限公司 | Shield support |
| CN101333931B (en) * | 2008-07-31 | 2010-06-02 | 中国矿业大学 | Multiple layer hyperstatic hydraulic support |
| CN101333933B (en) * | 2008-07-31 | 2010-06-09 | 中国矿业大学 | Hyperstatic hydraulic support |
| CN101333928B (en) * | 2008-07-31 | 2010-06-09 | 中国矿业大学 | Multiple layer double-fork type hyperstatic hydraulic support |
| CN101333930B (en) * | 2008-07-31 | 2010-06-23 | 中国矿业大学 | Double-fork type hyperstatic hydraulic support |
| CN101864972A (en) * | 2010-06-04 | 2010-10-20 | 中煤北京煤矿机械有限责任公司 | Small supporting point full-protection-type tunnel bracket and supporting method thereof |
| CN101864976A (en) * | 2010-06-07 | 2010-10-20 | 山东兖煤精益机电设备有限公司 | Airborne hydraulic multifunctional temporary support machine |
| CN102337887A (en) * | 2010-07-18 | 2012-02-01 | 张有贤 | Overpass chain cutting tower type lump extraction support protection conveying type combined lump coal machine |
| CN102337887B (en) * | 2010-07-18 | 2015-09-23 | 张有贤 | Overpass chain cutting tower type lump extraction support protection conveying type combined lump coal machine |
| CN103410517A (en) * | 2013-07-05 | 2013-11-27 | 中国煤炭科工集团太原研究院 | Fast driving stepping self-moving rubber belt conveyor tail supporting device |
| CN105626117A (en) * | 2016-02-25 | 2016-06-01 | 郑州四维矿业机械有限责任公司 | Hydraulic support and jacking beam for hydraulic support |
| CN111411950A (en) * | 2020-04-12 | 2020-07-14 | 陈文东 | A but, roll adjustment cutting formula coal device for coal mining |
| CN111411950B (en) * | 2020-04-12 | 2020-12-11 | 温州派瑞机械科技有限公司 | A but, roll adjustment cutting formula coal device for coal mining |
Also Published As
| Publication number | Publication date |
|---|---|
| TR199800524A2 (en) | 1999-10-21 |
| SI9800089A (en) | 1998-10-31 |
| CN1163661C (en) | 2004-08-25 |
| KR19980080478A (en) | 1998-11-25 |
| DE19712310A1 (en) | 1998-10-01 |
| TR199800524A3 (en) | 1999-10-21 |
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