CN109322686B - Advanced support for fully-mechanized coal mining face - Google Patents
Advanced support for fully-mechanized coal mining face Download PDFInfo
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- CN109322686B CN109322686B CN201811479646.7A CN201811479646A CN109322686B CN 109322686 B CN109322686 B CN 109322686B CN 201811479646 A CN201811479646 A CN 201811479646A CN 109322686 B CN109322686 B CN 109322686B
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- oil cylinder
- base
- top frame
- fixedly connected
- hinged
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- 239000003245 coal Substances 0.000 title claims abstract description 16
- 238000005065 mining Methods 0.000 title claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims 29
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 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 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- E21D23/0004—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
-
- 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
- E21D23/04—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
- E21D23/0418—Positioning devices and stabilizing means for the props
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Tents Or Canopies (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention discloses a fully-mechanized mining face advanced support which comprises a base, an oil cylinder I and a top frame, wherein the top frame is positioned above the base and connected with the middle of the base through two oil cylinders I, a side wall plate is hinged to the upper end part of the rear side of the top frame, two symmetrical support plates are fixedly connected to the middle of the lower part of the top frame, an oil cylinder II is hinged between the lower end of the support plates and the lower part of the side wall plate, an oil cylinder III is arranged at one end of the inside of the top frame, an oil cylinder IV is arranged at one end of the inside of the base, a valve seat rod is fixedly connected to the side edge of the base, and a plurality of reversing valves are connected with the oil cylinder I, the oil cylinder II, the oil cylinder III, the oil cylinder IV and the oil cylinder V respectively through oil pipes. The design product has the characteristics of small volume, light weight, high supporting strength, convenient underground transportation, good adaptability and the like, is particularly suitable for the production environment conditions of the low coal seam narrow roadway in the south, and achieves remarkable use effects.
Description
Technical Field
The invention relates to an advanced support, in particular to an advanced support for a fully-mechanized mining face, and belongs to the technical field of coal mining equipment.
Background
The traditional supporting mode is to manually use single hydraulic prop tops or single matched hinged top beam temporary supporting top plates at two ends of the coal mining working face, the manual mode has low supporting strength, small supporting area, high labor intensity and high risk of prop falling, the supporting process technology is behind, and the labor is more, so that the safety production is not facilitated; and the requirements of the current high-yield and high-efficiency mines can not be met. Therefore, the research on advanced hydraulic support supporting equipment for roadways at two ends of a fully mechanized mining face is urgent. Some manufacturers have designed advanced hydraulic supports for roadways at two ends, but the support is modified on the basis of a common hydraulic support, and the support has the problems of large volume, heavy weight, poor adaptability of the end support and the support, and the like, especially in the south of China, mines with severe geological conditions, low coal beds, narrow roadways and the like, and cannot be used at all. In the past, three rows of single body cap-wearing point columns are additionally arranged in the range of 20m for advance support, the row spacing between the columns is 1200 multiplied by 1000mm, the labor intensity of manually erecting and withdrawing single bodies is high, the danger of touching hands and touching feet exists in moving single body supports, secondary loosening of surrounding rocks of a top plate is easy to cause, particularly, under the conditions that the top plate is obvious in pressure and the surrounding rocks are broken, bulging deformation of two sides of a roadway can occur, the top plate sinks, the section of the roadway is reduced, a series of problems of unsmooth ventilation and easy damage of equipment are brought, normal coal mining of a working face is directly restricted, and the method is extremely unfavorable for safety production.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides a combine and adopt working face advance support, combine and adopt working face advance support by the back timber, a pedestal, flexible roof beam, draw gear, support system and hydraulic system constitute, in the support process, a total of support section uses 48, replace traditional "four sets of eight roof beams" and monomer post cooperation handing-over back timber temporary support, link to each other by traction cylinder between every frame, during the support, flexible roof beam and traction cylinder all are in the state of stretching out, finish a knife coal, drop the stand, receive flexible roof beam and traction cylinder, realize the frame and advance, go on in proper order, the support safety of assurance tunnel that can be better reduces the danger coefficient, the effectual above-mentioned problem that exists that has solved.
The technical scheme of the invention is as follows: the utility model provides a combine and adopt working face advance support, it includes base, hydro-cylinder one and roof-rack, the roof-rack is located the top of base and middle through two hydro-cylinders one connection, articulates at the rear side upper end of roof-rack has the side wall board, fixedly connected with two backup pads of symmetry in the middle of the below of roof-rack, articulates between the lower extreme of backup pad and the lower part of side wall board has hydro-cylinder two, is equipped with hydro-cylinder three in the inside one end of roof-rack, is equipped with hydro-cylinder four and hydro-cylinder five in the inside of base, is connected with the disk seat pole at the side fixedly connected with of base, is connected with a plurality of switching-over valves on the disk seat pole, the switching-over valve passes through oil pipe and is connected with hydro-cylinder one, hydro-cylinder two, hydro-cylinder three, hydro-cylinder four and hydro-cylinder five respectively.
The base is of a cuboid box-shaped structure, a plurality of vertical reinforcing ribs I are fixedly connected to the inside of the base, an upward arc-shaped section is arranged at the bottoms of two ends of the base, two lugs are fixedly connected to the outer side of one end of the base, hinge holes are formed in the lugs, rod holes extending out of telescopic rods of a fourth oil cylinder are formed in the side wall of the base, holes extending out of telescopic rods of a fifth oil cylinder are formed in the side wall of the end portion of the base, two sleeves are fixedly connected to the upper portion of the base, and a plurality of reinforcing ribs II are fixedly connected to the side edges of the sleeves.
The bottom end of the first oil cylinder extends into the sleeve and is connected with the bottom of the top frame through a first pin shaft on the sleeve, and the top end of the telescopic rod of the first oil cylinder is connected with the bottom of the top frame through a second pin shaft.
The top frame is of a cuboid box-shaped structure, a plurality of vertical reinforcing ribs III are fixedly connected to the inside of the top frame, square holes are formed in the side walls of the top frame, and a telescopic rod penetrating through hole for the oil cylinder III is formed in one side edge of one end of the top frame.
And a plurality of reinforcing ribs IV are fixedly connected to the inner side wall of the side wall plate.
The end of the second oil cylinder is hinged with the bottom end of the supporting plate, and the end of the second telescopic rod of the second oil cylinder is hinged with the fourth reinforcing rib.
The axis of the oil cylinder III is positioned on the length direction of the top frame, the bottom end of the oil cylinder III is hinged with the inner wall of the top frame, a telescopic rod of the oil cylinder III is fixedly connected with a telescopic arm, and the telescopic arm extends out of the end wall of the top frame and is hinged with an end plate.
The axis of the oil cylinder IV is perpendicular to the length direction of the base, the bottom end of the oil cylinder IV is hinged with the inner wall of the base, and the telescopic rod of the oil cylinder IV extends out of the rod hole on the side wall of the base.
One end of the oil cylinder five is hinged with the first reinforcing rib on the base through the third pin shaft, and the other end of the oil cylinder five is hinged with the support lug of the adjacent support through the fourth pin shaft.
The cylinder body of hydro-cylinder one is last still to be equipped with two semicircular staple bolts of symmetrical arrangement, staple bolt one end is through bolted connection, and the other end is through round pin axle four articulated to on the supporting beam between the adjacent hydro-cylinder one, supporting beam is square box structure, two connecting plates of fixedly connected with in the below of supporting beam, the connecting plate passes through the bolt and is connected with the journal stirrup of fixed connection in the base top, four supports of side fixedly connected with at supporting beam, five articulates through the round pin axle have U type connecting plate between the support, the intermediate junction of U type connecting plate has the rivet, is connected with the chain between the rivet of front and back row.
The beneficial effects of the invention are as follows: compared with the prior art, the technical scheme of the invention adopts a lightweight design thought, and the design product has the characteristics of small volume, light weight, high supporting strength, convenient underground transportation, good adaptability and the like, and is particularly suitable for the environmental conditions of the production of the narrow roadway of the low coal seam in the south, and compared with the parameters of the hydraulic bracket of the common thin coal seam: taking a Zy3800/12/28 bracket as an example, the transport dimension (length x width x height) is 55000x1430x1500, the bracket weight: 13.1 tons, while using the present stand: transport dimension (length, width, height) 1600400/>1443, Bracket weight: 1.525 tons, the appearance structure and the weight of the device are greatly reduced to meet the same production process requirements, the advanced support is adopted to temporarily support the support section, the advanced support is high in support strength, high in working resistance and high in safety and reliability, various coal seam conditions can be adapted, the production efficiency is improved, the labor intensity is reduced, and the remarkable use effect is achieved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a side view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings of the present specification.
Example 1: as shown in the accompanying drawings 1-2, the advanced support of the fully-mechanized mining face comprises a base 9, an oil cylinder I6 and a top frame 3, wherein the top frame 3 is positioned above the base 9 and is connected with the middle through the two oil cylinders I6, a side wall plate 5 is hinged to the upper end part of the rear side of the top frame 3, two symmetrical support plates 11 are fixedly connected to the middle of the lower part of the top frame 3, an oil cylinder II 12 is hinged between the lower end of the support plates 11 and the lower part of the side wall plate 5, an oil cylinder III 1 is arranged at one end of the inner part of the top frame 3, an oil cylinder IV 19 and an oil cylinder IV 25 are arranged in the base 9, a valve seat rod 15 is fixedly connected to the side edge of the base 9, and a plurality of reversing valves 14 are connected with the oil cylinder I6, the oil cylinder II 12, the oil cylinder III 1, the oil cylinder IV 19 and the oil cylinder IV 25 respectively through oil pipes 13.
Further, the base 9 is of a cuboid box-shaped structure, a plurality of vertical reinforcing ribs I10 are fixedly connected to the inside of the base 9, an upward arc-shaped section 8 is arranged at the bottoms of two ends of the base 9, two lugs 16 are fixedly connected to the outer side of one end of the base 9, a hinge hole 17 is formed in each lug 16, a rod hole 20 extending from a telescopic rod of a fourth oil cylinder 19 is formed in the side wall of the base 9, a hole extending from a telescopic rod of a fifth oil cylinder 25 is formed in the side wall of the end portion of the base 9, two sleeves 31 are fixedly connected to the upper portion of the base 9, and a plurality of reinforcing ribs II 7 are fixedly connected to the side edges of the sleeves 31.
Further, the bottom end of the first oil cylinder 6 extends into the sleeve 31 and is connected through a first pin shaft 29 on the sleeve 31, and the top end of a telescopic rod of the first oil cylinder 6 is connected with the bottom of the top frame 3 through a second pin shaft 23.
Further, the roof-rack 3 is a cuboid box-shaped structure, a plurality of vertical reinforcing ribs III 4 are fixedly connected to the inside of the roof-rack 3, square holes 2 are formed in the side wall of the roof-rack 3, and a telescopic rod penetrating through hole for the oil cylinder III 1 is formed in one side edge of one end of the roof-rack 3.
Further, a plurality of reinforcing ribs four 18 are fixedly connected to the inner side wall of the side wall plate 5.
Further, the cylinder end of the second cylinder 12 is hinged to the bottom end of the supporting plate 11, and the telescopic rod end of the second cylinder 12 is hinged to the fourth reinforcing rib 18.
Further, the axis of the oil cylinder III 1 is located in the length direction of the top frame 3, the bottom end of the oil cylinder III 1 is hinged to the inner wall of the top frame 3, a telescopic rod of the oil cylinder III 1 is fixedly connected with a telescopic arm 21, and the telescopic arm 21 extends out of the end wall of the top frame 3 and is hinged to an end plate 22.
Further, the axis of the oil cylinder IV 19 is perpendicular to the length direction of the base 9, the bottom end of the oil cylinder IV 19 is hinged with the inner wall of the base 9, and the telescopic rod of the oil cylinder IV 19 extends out of the rod hole 20 on the side wall of the base 9.
Further, one end of the fifth oil cylinder 25 is hinged with the first reinforcing rib 10 on the base 9 through a third pin shaft 24, and the other end of the fifth oil cylinder 25 is hinged with the support lug 16 of the adjacent bracket through a fourth pin shaft 26.
Further, two semicircular hoops 27 which are symmetrically arranged are further arranged on the cylinder body of the first oil cylinder 6, one end of each hoop 27 is connected through a bolt, the other end of each hoop 27 is hinged to a supporting beam 32 between the adjacent first oil cylinders 6 through a fourth pin shaft 38, the supporting beam 32 is of a square box body structure, two connecting plates 28 are fixedly connected below the supporting beam 32, the connecting plates 28 are connected with lugs 30 which are fixedly connected above the base 9 through bolts, four supports 33 are fixedly connected to the side edges of the supporting beam 32, U-shaped connecting plates 36 are hinged between the supports 33 through fifth pin shafts 37, rivets 34 are connected between the U-shaped connecting plates 36, and chains 35 are connected between the front and rear rows of rivets 34.
The fully-mechanized mining face advanced support consists of a top beam, a base, telescopic beams, a traction device, a support system and a hydraulic system, wherein 48 frames are used for one support section in total in the support process, the traditional temporary support of the top beam is replaced by four groups of eight beams and single columns in a matched and joint manner, and each frame is connected by a traction oil cylinder. When the support is carried out, the telescopic beam and the traction oil cylinder are in an extending state, one cutter coal is adopted, the stand column is lowered, the telescopic beam and the traction oil cylinder are retracted, the forward movement of the frame is realized, the support safety of a roadway can be better ensured, and the danger coefficient is reduced.
The design product has the characteristics of small volume, light weight, high supporting strength, convenient underground transportation, good adaptability and the like, is particularly suitable for the production environment conditions of the low coal seam narrow roadway in the south, and is compared with the parameters of the common thin coal seam hydraulic support: taking a Zy3800/12/28 bracket as an example, the transport dimension (length x width x height) is 55000x1430x1500, the bracket weight: 13.1 tons, while using the present stand: transport dimension (length, width, height) 1600400/>1443, Bracket weight: 1.525 tons, the appearance structure and the weight of the device are greatly reduced to meet the same production process requirements, the advanced support is adopted to temporarily support the support section, the advanced support is high in support strength, high in working resistance and high in safety and reliability, various coal seam conditions can be adapted, the production efficiency is improved, the labor intensity is reduced, and the remarkable use effect is achieved.
The present invention is not described in detail in the present application, and is well known to those skilled in the art. Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (2)
1. The utility model provides a combine and adopt working face advance support which characterized in that: the hydraulic oil pump comprises a base (9), an oil cylinder I (6) and a top frame (3), wherein the top frame (3) is positioned above the base (9) and connected with the middle through two oil cylinders I (6), the upper end part of the rear side of the top frame (3) is hinged with a side wall plate (5), two symmetrical support plates (11) are fixedly connected with the middle of the lower part of the top frame (3), an oil cylinder II (12) is hinged between the lower end of the support plate (11) and the lower part of the side wall plate (5), an oil cylinder III (1) is arranged at one end of the inside of the top frame (3), an oil cylinder IV (19) and an oil cylinder V (25) are arranged in the base (9), a valve seat rod (15) is fixedly connected to the side edge of the base (9), and a plurality of reversing valves (14) are connected with the oil cylinder I (6), the oil cylinder II (12), the oil cylinder III (19) and the oil cylinder V (25) through oil pipes (13) respectively; the base (9) is of a cuboid box-shaped structure, a plurality of vertical reinforcing ribs I (10) are fixedly connected to the inside of the base (9), an upward arc-shaped section (8) is arranged at the bottom of two ends of the base (9), two lugs (16) are fixedly connected to the outer side of one end of the base (9), hinge holes (17) are formed in the lugs (16), rod holes (20) extending out of telescopic rods of four oil cylinders (19) are formed in the side wall of the base (9), holes extending out of telescopic rods of five oil cylinders (25) are formed in the side wall of the end portion of the base (9), two sleeves (31) are fixedly connected to the upper portion of the base (9), and a plurality of reinforcing ribs II (7) are fixedly connected to the side edges of the sleeves (31); the bottom end of the first oil cylinder (6) extends into the sleeve (31) and is connected with the bottom of the top frame (3) through a first pin shaft (29) on the sleeve (31), and the top end of a telescopic rod of the first oil cylinder (6) is connected with the bottom of the top frame (3) through a second pin shaft (23); the top frame (3) is of a cuboid box-shaped structure, a plurality of vertical reinforcing ribs III (4) are fixedly connected to the inside of the top frame (3), square holes (2) are formed in the side wall of the top frame (3), and through holes for the telescopic rods of the oil cylinders III (1) to penetrate are formed in the side edge of one end of the top frame (3); the inner side wall of the side wall plate (5) is fixedly connected with a plurality of reinforcing ribs IV (18); the oil cylinder end of the oil cylinder II (12) is hinged with the bottom end part of the supporting plate (11), and the telescopic rod end of the oil cylinder II (12) is hinged with the reinforcing rib IV (18); the axis of the oil cylinder III (1) is positioned in the length direction of the top frame (3), the bottom end of the oil cylinder III (1) is hinged with the inner wall of the top frame (3), a telescopic rod of the oil cylinder III (1) is fixedly connected with a telescopic arm (21), and the telescopic arm (21) extends out of the end wall of the top frame (3) and is hinged with an end plate (22); the axis of the oil cylinder IV (19) is perpendicular to the length direction of the base (9), the bottom end of the oil cylinder IV (19) is hinged with the inner wall of the base (9), and a telescopic rod of the oil cylinder IV (19) extends out of a rod hole (20) on the side wall of the base (9); one end of the oil cylinder five (25) is hinged with the first reinforcing rib (10) on the base (9) through a third pin roll (24), and the other end of the oil cylinder five (25) is hinged with the support lug (16) of the adjacent support through a fourth pin roll (26).
2. The fully-mechanized coal mining face lead frame of claim 1, wherein: the cylinder body of the first oil cylinder (6) is further provided with two semicircular hoops (27) which are symmetrically arranged, one end of each hoop (27) is connected through a bolt, the other end of each hoop is hinged to a supporting beam (32) between the adjacent first oil cylinders (6) through a pin roll four (38), the supporting beams (32) are of square box structures, two connecting plates (28) are fixedly connected below the supporting beams (32), the connecting plates (28) are connected with lugs (30) fixedly connected above a base (9) through bolts, four supports (33) are fixedly connected to the side edges of the supporting beams (32), U-shaped connecting plates (36) are hinged between the supports (33) through pin rolls five (37), rivets (34) are connected between the middle of each U-shaped connecting plate (36), and chains (35) are connected between the rivets (34) of the front row and the back row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479646.7A CN109322686B (en) | 2018-12-05 | 2018-12-05 | Advanced support for fully-mechanized coal mining face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479646.7A CN109322686B (en) | 2018-12-05 | 2018-12-05 | Advanced support for fully-mechanized coal mining face |
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| Publication Number | Publication Date |
|---|---|
| CN109322686A CN109322686A (en) | 2019-02-12 |
| CN109322686B true CN109322686B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811479646.7A Active CN109322686B (en) | 2018-12-05 | 2018-12-05 | Advanced support for fully-mechanized coal mining face |
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| CN (1) | CN109322686B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110426016B (en) * | 2019-07-30 | 2021-04-16 | 精英数智科技股份有限公司 | Alignment auxiliary method and system for moving hydraulic support of fully mechanized coal mining face |
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| CN200940489Y (en) * | 2006-08-04 | 2007-08-29 | 王新民 | Hydraulic chock of medium thick coal layer combined advanced support |
| CN203531940U (en) * | 2013-07-25 | 2014-04-09 | 河南焦煤能源有限公司九里山矿 | Stepping type advanced supporting and hydraulic support |
| CN203796290U (en) * | 2014-04-28 | 2014-08-27 | 范东升 | Light flexible simple fully-mechanized mining hydraulic support |
| CN205047241U (en) * | 2015-09-28 | 2016-02-24 | 沈阳天安科技股份有限公司 | Tunnel quick travel formula advance support support |
| CN106761874A (en) * | 2017-03-31 | 2017-05-31 | 河南理工大学 | A kind of automatic moving type forepoling hydraulic support with side guard plate |
| CN209129646U (en) * | 2018-12-05 | 2019-07-19 | 贵州盘江矿山机械有限公司 | A kind of anti-tipping apparatus of fully-mechanized mining working advance timbering |
| CN209293828U (en) * | 2018-12-05 | 2019-08-23 | 贵州盘江矿山机械有限公司 | A kind of fully-mechanized mining working advance timbering structure |
-
2018
- 2018-12-05 CN CN201811479646.7A patent/CN109322686B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940489Y (en) * | 2006-08-04 | 2007-08-29 | 王新民 | Hydraulic chock of medium thick coal layer combined advanced support |
| CN203531940U (en) * | 2013-07-25 | 2014-04-09 | 河南焦煤能源有限公司九里山矿 | Stepping type advanced supporting and hydraulic support |
| CN203796290U (en) * | 2014-04-28 | 2014-08-27 | 范东升 | Light flexible simple fully-mechanized mining hydraulic support |
| CN205047241U (en) * | 2015-09-28 | 2016-02-24 | 沈阳天安科技股份有限公司 | Tunnel quick travel formula advance support support |
| CN106761874A (en) * | 2017-03-31 | 2017-05-31 | 河南理工大学 | A kind of automatic moving type forepoling hydraulic support with side guard plate |
| CN209129646U (en) * | 2018-12-05 | 2019-07-19 | 贵州盘江矿山机械有限公司 | A kind of anti-tipping apparatus of fully-mechanized mining working advance timbering |
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| CN109322686A (en) | 2019-02-12 |
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