CN110469355A - The Split type hydraulic support of ultra-thin coal seam - Google Patents
The Split type hydraulic support of ultra-thin coal seam Download PDFInfo
- Publication number
- CN110469355A CN110469355A CN201910905006.6A CN201910905006A CN110469355A CN 110469355 A CN110469355 A CN 110469355A CN 201910905006 A CN201910905006 A CN 201910905006A CN 110469355 A CN110469355 A CN 110469355A
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- rear base
- pedestal
- fore
- stock
- preceding pedestal
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- 239000003245 coal Substances 0.000 title claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000178 monomer Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005065 mining Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0008—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a pair of joined struts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D23/08—Advancing mechanisms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of Split type hydraulic supports of ultra-thin coal seam, and including the bracket component that several groups are arranged side by side, the bracket component includes fore-stock, the after-poppet set on the fore-stock rear and the connecting plate between the fore-stock and fore-stock；The fore-stock includes preceding pedestal, the preceding top beam above the preceding pedestal and the preceding hydraulic vertical prop being supported between the preceding pedestal and preceding top beam, advancing jack is installed, the output shaft of the advancing jack is connected towards front and with working face scraper-trough conveyer on the preceding pedestal；The after-poppet includes rear base, the rear top beam above the rear base and the rear hydraulic vertical prop being supported between the rear base and rear top beam；The both ends of the connecting plate are connected with the preceding pedestal and rear base respectively.The present invention can meet the working space of on-site personnel to greatest extent, reduce labor intensity and the danger of staff.
Description
Technical field
The present invention relates to mining technique fields, and in particular to a kind of Split type hydraulic support of ultra-thin coal seam.
Background technique
The existing all integral types of hydraulic support, being divided into hydraulic chock-shield support, (bracket is by two hydraulic branch
Column and bracket tail portion link mechanism composition), (one by four hydraulic props and tail portion link mechanism for standing shield hydraulic support
Composition).
Every bracket is directly to link to can be used with working face scraper-trough conveyer to existing hydraulic support in application process, scene
Operating personnel is movable in the safe space of hydraulic support stand, since hydraulic support is by top beam, pedestal, hydraulic prop, chain
Connection mechanism etc. is constituted, and the top beam and pedestal of hydraulic support are that thick steel plate is welded, that is top beam and pedestal are all to have thickness
Degree, it is assumed that 1.0 meters of coal working face coal seam thickness, be mounted on stope using existing Integral hydraulic bracket, prop up
1.0 meters of frame whole height, 0.3 meter of set cap thickness, 0.25 meter of base thickness, the space under bracket only has 0.45 meter of height
.Operating personnel can not be movable in such narrow space, also just operates equipment without working space.
The coal seam of existing 1.5 meters of the back production of Integral hydraulic bracket or more thickness, operating personnel can be in hydraulic supports 1.5
Equipment is operated in the space of -0.55 meter=0.9 meter supporting of rice, working space can also meet the need that employee operates equipment in bracket
It wants, still, hydraulic support is unable to satisfy the working space of on-site personnel under 1.5 meters of following situations of back production coal seam thickness.
The working face in 1.5 meters of the present back production of coal mine or less coal seam uses hydraulic monomer as main supporting means, working face
Every back production one circulation, will withdraw row's monomer, then set row's monomer, using artificial caving, work on the spot employee labour
Intensity maximum, and along with the danger for withdrawing monomer.With the development of the times, coal mine worker at the production line is reduced year by year, 1.5 meters with
On seam mining, be able to achieve the needs of mechanization back production, 1.5 meters of coal seams below completely using present comprehensive mining hydraulic bracket
Back production is designed the needs of upper intensity by comprehensive mining hydraulic bracket using existing comprehensive mining hydraulic bracket, integral support occupied space compared with
Greatly, space is smaller in bracket, and operating personnel can not operate equipment in the space of existing comprehensive mining hydraulic bracket supporting.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of Split type hydraulic supports of ultra-thin coal seam, with maximum
The working space for meeting on-site personnel of limit reduces labor intensity and the danger of staff.
The present invention provides a kind of Split type hydraulic support of ultra-thin coal seam, the bracket group being arranged side by side including several groups
Part, the bracket component include: fore-stock, the fore-stock include preceding pedestal, the preceding top beam above the preceding pedestal with
And it is supported on the preceding hydraulic vertical prop between the preceding pedestal and preceding top beam, and advancing jack is installed on the preceding pedestal, it is described
The output shaft of advancing jack is connected towards front and with working face scraper-trough conveyer；After-poppet set on the fore-stock rear, it is described
After-poppet includes rear base, the rear top beam above the rear base and is supported between the rear base and rear top beam
Hydraulic vertical prop afterwards；And the connecting plate between the fore-stock and fore-stock, the both ends of the connecting plate respectively with it is described
Preceding pedestal is connected with rear base.
Further, the preceding pedestal is by symmetrical two preceding pedestal monomer compositions, the advancing jack installation
Between two preceding pedestal monomers, there are two the preceding hydraulic vertical prop settings, and two preceding hydraulic vertical props are respectively supported at pair
Between the preceding pedestal monomer answered and preceding top beam；The rear base is by symmetrical two rear base monomer compositions, the rear liquid
It presses there are two column settings, hydraulic vertical prop is respectively supported between corresponding rear base monomer and rear top beam after two；The company
Fishplate bar is provided with two pieces, and two pieces of connecting plates are connected between corresponding preceding pedestal monomer and rear base monomer.
Further, preceding guidance set is provided between two preceding hydraulic vertical props, the preceding guidance set includes solid
It is led due on pilot sleeve on the first lower pilot sleeve and first on the preceding pedestal, the described first lower pilot sleeve and first
It is slidably socketed to sleeve, rear guidance set is provided between two rear hydraulic vertical props, the rear guidance set includes fixing
It is oriented on pilot sleeve on the second lower pilot sleeve and second on the rear base, the described second lower pilot sleeve and second
Sleeve is slidably socketed.
Further, passing frame, the output shaft of advancing jack and the passage are arranged with outside the advancing jack
The front of frame is connected, and front and the working face scraper-trough conveyer of passing frame link.
Further, the both ends of the connecting plate are hinged with the preceding pedestal and rear base respectively.
Further, the side of the preceding pedestal and rear base is provided with bottom tune jack, each bottom tune jack
Output shaft be connected towards outside and respectively with the preceding pedestal and rear base of adjacent sets bracket component.
Further, the side of the preceding pedestal and rear base is respectively equipped with two bottom tune jack, is set on preceding pedestal
The output ends of two bottom tune jack be articulated with front side push plate, the front side push plate is fixed on the preceding bottom of adjacent sets bracket component
The side of seat, the output end of two bottom tune jack on rear base are articulated with rear side push pedal, the rear side push pedal connection
In the side of the rear base of adjacent sets bracket component.
The beneficial effects of the present invention are embodied in: the bracket component of the application is arranged along working face, and the passage of fore-stock is very heavy
Top is linked with working face scraper-trough conveyer, is connected between the preceding pedestal of fore-stock and the rear base of after-poppet by connecting plate, using this point
When body formula hydraulic support carries out supporting to stope, preceding pedestal and rear base are respectively supported at the bottom of working face, sinciput
Beam and rear top beam are respectively supported at the top of working face, and the region between fore-stock and after-poppet provides operation sky for staff
Between, fore-stock and after-poppet are not take up the region, therefore the height in the region between fore-stock and after-poppet is substantially equal to coal
The height of layer, ensure that the operating space of operating personnel to greatest extent, not only can guarantee face timbering intensity in this way, but also can protect
The working space of operating personnel is demonstrate,proved, to realize that manual intervention intelligence fully-mechanized mining working is laid a good foundation, when working face extraction one
After cutting depth, working face scraper-trough conveyer is elapsed forward one simultaneously and cuts deep, working face scraper-trough conveyer by the advancing jack for controlling each bracket component
After in place, preceding hydraulic vertical prop and the landing of rear hydraulic vertical prop, then each bracket component is directly pulled along one by advancing jack
Cut it is deep, bracket component in place after, preceding hydraulic vertical prop and rear hydraulic vertical prop increase, respectively to hold out against preceding top beam and rear top beam in work
Make under the top in face, in this way, the every back production of working face one circulation, can realize control working face scraper-trough conveyer and hydraulic support to
Working face mobile one is cut deeply, is not necessarily to artificial caving, is reduced the labor intensity of field personnel, it is ensured that staff's
Safety.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Connection schematic diagram of the Fig. 3 between two adjacent pack support components；
Fig. 4 is the floor plan of the bracket component of the embodiment of the present invention.
In attached drawing: 100 indicate bracket component；200 indicate working face scraper-trough conveyer；1 indicates fore-stock；11 indicate preceding pedestal；12
Top beam before indicating；13 indicate preceding hydraulic vertical prop；14 indicate the first lower pilot sleeve；15 indicate pilot sleeve on first；After 2 indicate
Bracket；21 indicate rear base；Top beam after 22 expressions；Hydraulic vertical prop after 23 expressions；24 indicate the second lower pilot sleeve；25 indicate the
Pilot sleeve on two；3 indicate connecting plate；41 indicate advancing jack；42 indicate passing frame；51 indicate bottom tune jack；52
Indicate front side push plate；53 indicate rear side push pedal.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
As Figure 1-Figure 4, the embodiment of the invention provides a kind of Split type hydraulic support of ultra-thin coal seam, including it is several
Group bracket component 100 arranged side by side, each bracket component 100 are arranged along working face.
Bracket component 100 includes fore-stock 1, set on the after-poppet 2 at 1 rear of fore-stock and and set on 1 and of fore-stock
Connecting plate 3 between fore-stock 1.Fore-stock 1 includes preceding pedestal 11, the preceding top beam 12 above preceding pedestal 11 and is supported on
Preceding hydraulic vertical prop 13 between preceding pedestal 11 and preceding top beam 12 is equipped with advancing jack 41, advancing jack on preceding pedestal 11
41 output shaft is connected towards front and with working face scraper-trough conveyer 200, and " working face scraper-trough conveyer 200 " is along face length direction here
The scratch board conveyor of extension, the coal mine adopted for transmitting coalcutter are arranged with passage in the present embodiment outside advancing jack 41
The output shaft of frame 42, advancing jack 41 is connected with the front of passing frame 42, and front and the working face of passing frame 42 slip
Son 200 links, and advancing jack 41 is linked by passing frame 42 with working face scraper-trough conveyer 200, and 42 pairs of passage of passing frame are very heavy
The output shaft on top 41 has the function of stable.
After-poppet 2 include rear base 21, the rear top beam 22 above rear base 21 and be supported on rear base 21 and after
Rear hydraulic vertical prop 23 between top beam 22.The both ends of connecting plate 3 are connected with preceding pedestal 11 and rear base 21 respectively, in this implementation
Example, the both ends of connecting plate 3 are hinged with preceding pedestal 11 and rear base 21 respectively, so that preceding pedestal 11 and rear base 21 are in left and right directions
On opposite can swing, when preventing pedestal 11 and rear base 21 before lateral adjustment, preceding pedestal 11 and rear base 21 act inconsistent
And it is bad to cause connecting plate 3 to be rolled over.
The bracket component 100 of the application is arranged along working face, the advancing jack 41 and working face scraper-trough conveyer 200 of fore-stock 1
Link (fore-stock 1 and working face scraper-trough conveyer 200 without away from link), between the preceding pedestal 11 of fore-stock 1 and the rear base 21 of after-poppet 2
(there are about 500 ㎜ spacing among fore-stock 1 and after-poppet 2) is connected by connecting plate 3, using the Split type hydraulic support to back production
When working face carries out supporting, preceding pedestal 11 and rear base 21 are respectively supported at the bottom of working face, preceding top beam 12 and rear top beam 22
It is respectively supported at the top of working face, the region between fore-stock 1 and after-poppet 2 provides working space, preceding branch for staff
Frame 1 and after-poppet 2 are not take up the region, therefore the height in the region between fore-stock 1 and after-poppet 2 is substantially equal to coal seam
Highly, it ensure that the operating space of operating personnel to greatest extent, not only can guarantee face timbering intensity in this way, but also can guarantee work
The working space of industry personnel is cut deep to realize that manual intervention intelligence fully-mechanized mining working is laid a good foundation when working face extraction one
After (about 800 ㎜), controls the advancing jack 41 of each bracket component 100 while working face scraper-trough conveyer 200 being elapsed forward to one and cut
Deep (about 800 ㎜), working face scraper-trough conveyer 200 in place after, preceding hydraulic vertical prop 13 and rear hydraulic vertical prop 23 land, then advancing jack
41, which are directly pulled along one each bracket component 100, cuts deep (about 800 ㎜), bracket component 100 in place after, preceding hydraulic vertical prop 13
It is increased with rear hydraulic vertical prop 23, respectively to hold out against preceding top beam 12 and rear top beam 22 under the top of working face, in this way, work
The every back production in face one circulation can realize that control working face scraper-trough conveyer 200 and hydraulic support cut deep, nothing to working face mobile one
Artificial caving is needed, the labor intensity of field personnel is reduced, it is ensured that the safety of staff.
As a further improvement of the foregoing solution, preceding pedestal 11 is by symmetrical two preceding pedestal monomer compositions, passage
Jack 41 is installed between two preceding pedestal monomers, and there are two the preceding settings of hydraulic vertical prop 13, and two preceding hydraulic vertical props 13 are distinguished
It is supported between corresponding preceding pedestal monomer and preceding top beam 12.Rear base 21 is by symmetrical two rear bases, 21 monomer group
At there are two the rear settings of hydraulic vertical prop 23, and hydraulic vertical prop 23 is respectively supported at corresponding 21 monomer of rear base and rear top after two
Between beam 22.Connecting plate 3 is provided with two pieces, and two pieces of connecting plates 3 are connected to corresponding preceding pedestal monomer and rear base 21 is single
Between body.By hydraulic after two preceding pedestal monomers of setting and two preceding hydraulic vertical props, 13, two 21 monomers of rear base and two
Column 23 can be improved the stability of bracket support.Certainly, in other embodiments, preceding pedestal 11 and rear base 21 also divide
Integral structure can not used.
As a further improvement of the foregoing solution, for the stability of top beam 12 lifting and support before improving, two preceding liquid
Preceding guidance set is provided between pressure column 13, preceding guidance set includes the first lower pilot sleeve 14 before being fixed on pedestal 11
With first on pilot sleeve 15, pilot sleeve 15 is slidably socketed on the first lower pilot sleeve 14 and first, similarly, in order to improve
The stability of top beam 22 lifting and support afterwards, is provided with rear guidance set, rear guidance set packet between hydraulic vertical prop 23 after two
It includes and is fixed on pilot sleeve 25 on the on rear base 21 second lower pilot sleeve 24 and second, the second lower pilot sleeve 24 and second
Upper pilot sleeve 25 is slidably socketed.
In addition, the side of preceding pedestal 11 and rear base 21 is provided with bottom tune jack 51, each bottom tune jack 51 it is defeated
Shaft is connected towards outside and respectively with the preceding pedestal 11 of adjacent sets bracket component 100 and rear base 21, the Split type hydraulic branch
Frame can adjust the distance between two adjacent groups bracket component 100 by bottom tune jack 51, to meet the needs of supporting position.Tool
Body, in order to improve the harmony of stress when 100 side of bracket component pushes away to improve the stability that side pushes away, preceding pedestal 11 and rear base
21 side is respectively equipped with two bottom tune jack 51, and the output end of two bottom tune jack 51 on preceding pedestal 11 is hinged
In front side push plate 52, the side of the preceding pedestal 11 of adjacent sets bracket component 100 is fixed in front side push plate 52, is set on rear base 21
The output ends of two bottom tune jack 51 be articulated with rear side push pedal 53, rear side push pedal 53 is connected to adjacent sets bracket component 100
Rear base 21 side.
The present embodiment takes the design of narrow, short top beam in design, and intensity presses 1,000,000 Ns of single-column settings, and single rack support is strong
Degree is 2,000,000 Ns, and support strength is 4,000,000 Ns in total for fore-stock 1 and after-poppet 2.2 connection type of fore-stock 1 and after-poppet
It is hydraulic vertical prop+pilot sleeve support connection structure, overall structure between pedestal and top beam for connecting plate 3 (steel plate) connection
Simply, manoeuvrable, support strength meet live needs.
To sum up, the existing comprehensive mining hydraulic bracket supporting intensity of the present embodiment, and have operating personnel in ultra-thin coal seam height downlink
It walks, the space of commanding apparatus, repair apparatus.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (7)
1. a kind of Split type hydraulic support of ultra-thin coal seam, the bracket component being arranged side by side including several groups, which is characterized in that institute
Stating bracket component includes:
Fore-stock, the fore-stock include preceding pedestal, the preceding top beam above the preceding pedestal and are supported on the preceding bottom
Preceding hydraulic vertical prop between seat and preceding top beam is equipped with advancing jack, the output of the advancing jack on the preceding pedestal
Axis is connected towards front and with working face scraper-trough conveyer；
After-poppet set on the fore-stock rear, the after-poppet include rear base, the rear top above the rear base
Beam and the rear hydraulic vertical prop being supported between the rear base and rear top beam；
And the connecting plate between the fore-stock and fore-stock, the both ends of the connecting plate respectively with the preceding pedestal and
Rear base is connected.
2. the Split type hydraulic support of ultra-thin coal seam according to claim 1, which is characterized in that the preceding pedestal is by left and right
Symmetrical two preceding pedestal monomer compositions, the advancing jack are installed between two preceding pedestal monomers, the preceding liquid
It presses there are two column settings, two preceding hydraulic vertical props are respectively supported between corresponding preceding pedestal monomer and preceding top beam；After described
Pedestal is by symmetrical two rear base monomer compositions, and there are two the rear hydraulic vertical prop settings, hydraulic vertical prop point after two
It is not supported between corresponding rear base monomer and rear top beam；The connecting plate is provided with two pieces, and two pieces of connecting plates are separately connected
Between corresponding preceding pedestal monomer and rear base monomer.
3. the Split type hydraulic support of ultra-thin coal seam according to claim 2, which is characterized in that two preceding hydraulic verticals
Be provided with preceding guidance set between column, the preceding guidance set include the first lower pilot sleeve being fixed on the preceding pedestal and
Pilot sleeve on first, described first descends pilot sleeve on pilot sleeve and first to be slidably socketed, two rear hydraulic vertical props
Between be provided with rear guidance set, it is described after guidance set include the second lower pilot sleeve being fixed on the rear base and the
Pilot sleeve on two, described second descends pilot sleeve on pilot sleeve and second to be slidably socketed.
4. the Split type hydraulic support of ultra-thin coal seam according to claim 2, which is characterized in that outside the advancing jack
It is arranged with passing frame, the output shaft of advancing jack is connected with the front of the passing frame, the front of passing frame and work
Make the link of face scraper-trough conveyer.
5. the Split type hydraulic support of ultra-thin coal seam according to claim 1, which is characterized in that the both ends of the connecting plate
It is hinged with the preceding pedestal and rear base respectively.
6. the Split type hydraulic support of ultra-thin coal seam according to claim 1-5, which is characterized in that the preceding bottom
The side of seat and rear base is provided with bottom tune jack, the output shaft of each bottom tune jack towards outside and respectively with phase
The preceding pedestal of adjacent pack support component is connected with rear base.
7. the Split type hydraulic support of ultra-thin coal seam according to claim 6, which is characterized in that the preceding pedestal and rear bottom
The side of seat is respectively equipped with two bottom tune jack, and the output end of two bottom tune jack on preceding pedestal is articulated with front side
The side of the preceding pedestal of adjacent sets bracket component is fixed in push plate, the front side push plate, two bottom tune thousand on rear base
The output end on jin top is articulated with rear side push pedal, and the rear side push pedal is connected to the side of the rear base of adjacent sets bracket component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905006.6A CN110469355A (en) | 2019-09-24 | 2019-09-24 | The Split type hydraulic support of ultra-thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905006.6A CN110469355A (en) | 2019-09-24 | 2019-09-24 | The Split type hydraulic support of ultra-thin coal seam |
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| Publication Number | Publication Date |
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| CN110469355A true CN110469355A (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910905006.6A Pending CN110469355A (en) | 2019-09-24 | 2019-09-24 | The Split type hydraulic support of ultra-thin coal seam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236997A (en) * | 2020-02-24 | 2020-06-05 | 北京中矿创新联盟能源环境科学研究院 | Self-moving hydraulic support for ultra-thin coal seam |
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