CN105715289A - Gob-side retained roadway end bracket - Google Patents
Gob-side retained roadway end bracket Download PDFInfo
- Publication number
- CN105715289A CN105715289A CN201610237742.5A CN201610237742A CN105715289A CN 105715289 A CN105715289 A CN 105715289A CN 201610237742 A CN201610237742 A CN 201610237742A CN 105715289 A CN105715289 A CN 105715289A
- Authority
- CN
- China
- Prior art keywords
- gob
- back timber
- base
- side entry
- casing
- 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
- 230000000717 retained effect Effects 0.000 title abstract 10
- 239000003245 coal Substances 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000003203 everyday effect Effects 0.000 abstract 1
- 239000004551 spreading oil Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009414 blockwork Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001105 regulatory effect Effects 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
- E21D23/04—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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a gob-side retained roadway end bracket. The gob-side retained roadway end bracket comprises an electro-hydraulic system, a top beam, a base, a four-connecting rod and hydraulic stand columns, wherein a rear retractable beam is arranged at one end of the top beam and two groove-shaped beams, which are parallel to each other, are arranged on the top beam along the length direction of the top beam; the top beam is connected with the base through the hydraulic stand columns and the four-connecting rod; the base is connected with a net spreading mechanism; the net spreading mechanism comprises an L-shaped box body; one end of the box body is connected with the base; and the other end of the box body is connected with retractable drawers through net spreading oil cylinders. With the adoption of the gob-side retained roadway end bracket, the problem that coal cutting is influenced by spreading a net in front of a gob-side retained roadway is solved, and a top plate anchor rope in the retained roadway is protected from damages caused by the bracket; the speed of the retained roadway is improved and the cost is reduced; and the speed requirement on the gob-side retained roadway of pushing and exploiting for 20 meters every day can be met, and the gob-side retained roadway end bracket is widely applied to the gob-side retained roadway of coal mines.
Description
Technical field
The invention belongs to colliery without coal pillar mining technical field, relate to gob side entry retaining face end support.
Background technology
Traditional coal-mining method reserved coal pillar between coal-face, coal pillar width commonly reached 20～25 meters, and loss of coal pillar accounts for more than the 10% of China's coal-mine exploitation losses, for 2014 years, China's coal-mine annual production 38.7 hundred million tons, then because loss of coal pillar is up to nearly 400,000,000 tons；Meanwhile, gob side entry retaining can realize Y type and ventilate, and reduces the explosion accident that gas exceeding limit occurs.
Gob side entry retaining is one body of wall of constructing at frame rear, coal-face termination, make up and exploitation process causes a gang of disappearance, wall form is various, cast-in-place concrete wall, blockwork, spoil bag is had to assemble the form such as wall, brick wall, the body of wall of these forms is required for constructing at face end support rear, common face end support back timber rear portion is short, the personnel of rear operation can not be screened, for this, need lapping before frame, but before face end support frame, lapping affects coal-winning machine coal cutting, affects coal production, it is thus desirable to lapping after changing frame into, ensure operating personnel's safety simultaneously；Simultaneously; gob side entry retaining needs tunnel to remain; protection roof timbering is needed not to be damaged; then need not when not gob side entry retaining; after common end head bracket is walked in crossheading, top board Anchor cable-rod is damaged substantially, in order to protect anchor cable; need protection top board anchor cable, reduce support cost.
Summary of the invention
Having it is an object of the invention to provide gob side entry retaining face end support, when solving gob side entry retaining, the face end support afterbody of common end hydraulic support protects the little problem being unfavorable for supporting safety, protection back anchor cable of top area.
The technical solution adopted in the present invention is, gob side entry retaining face end support, including electrohydraulic control system, back timber, base, double leval jib, hydraulic vertical prop, one end of back timber is provided with rear extensible canopy, and back timber is provided with two trough girders being parallel to each other along back timber length direction；Back timber is connected with base by hydraulic vertical prop and double leval jib；Base is connected with net laying mechanism, and net laying mechanism includes the casing of L-type, and one end of casing is connected with base, and the other end of casing is connected with telescopic drawer by lapping oil cylinder.
The feature of the present invention also resides in,
Rear extensible canopy is built in one end of back timber, and rear extensible canopy is not more than 50mm to the distance of drawer.
Being provided with two or more cushion block on each trough girder, each trough girder is all vertically installed with the body of rod, the body of rod is all inserted perpendicularly in the horizontal preformed groove of back timber, and the body of rod is connected with back timber each through oil cylinder.
One end of casing is hinged with base.
Hydraulic vertical prop arranges four, and four hydraulic vertical props are in rectangular layout.
Drawer is inserted the other end of casing and is connected with casing by two lapping oil cylinders.
The invention has the beneficial effects as follows: back timber rear portion extends to inside net laying mechanism, shorten unsupported back span, protect operating personnel's safety; can lapping after frame; top board anchor cable can be protected not to be damaged, it is ensured that gob side entry retaining roof timbering effect simultaneously, be widely used in the industry such as colliery, metallurgy.
Accompanying drawing explanation
Fig. 1 is the structural representation of gob side entry retaining face end support of the present invention；
Fig. 2 is the structural representation of net laying mechanism in gob side entry retaining face end support of the present invention；
Fig. 3 is the sectional view of back timber in gob side entry retaining face end support of the present invention；
Fig. 4 is the use view of gob side entry retaining face end support of the present invention.
In figure: 1. back timber, 2. base, 3. double leval jib, 4. hydraulic vertical prop, extensible canopy after 5., 6. trough girder, 7. casing, 8. lapping oil cylinder, 9. drawer, 10. cushion block, 11. bodies of rod, 12. oil cylinders, 13. wire nettings, 14. artificial walls, 15. gob side entries, 16. coal-face crossheadings.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in FIG. 1 to 3, the invention provides gob side entry retaining face end support, including electrohydraulic control system, back timber 1, base 2, double leval jib 3, hydraulic vertical prop 4, it is characterized in that: one end of back timber 1 is provided with rear extensible canopy 5, back timber 1 is provided with two trough girders being parallel to each other 6 along back timber 1 length direction；Back timber 1 is connected with base 2 by hydraulic vertical prop 4 and double leval jib 3；Base 2 is connected with net laying mechanism, and net laying mechanism includes the casing 7 of L-type, and one end of casing 7 is connected with base 2, and the other end of casing 7 is connected with telescopic drawer 9 by lapping oil cylinder 8；
Rear extensible canopy 5 is built in one end of back timber 1, does not stretch out under rear extensible canopy 5 general status, when after after extensible canopy 5 is entirely insertable back timber 1, rear extensible canopy 5 is not more than 50mm to the distance of drawer 9, it is prevented that top board leakage cash injures operating personnel by a crashing object.
Being provided with two or more cushion block 10 on each trough girder 6, each trough girder 6 is all vertically installed with the body of rod 11, the body of rod 11 is all inserted perpendicularly in the horizontal preformed groove of back timber 1, and the body of rod 11 is connected with back timber 1 each through oil cylinder 12；
One end of casing 7 is hinged with base 2；
Hydraulic vertical prop 4 arranges four, and four hydraulic vertical props 4 are in rectangular layout；
Drawer 9 is inserted the other end of casing 7 and is connected with casing 7 by two lapping oil cylinders 8.
The using method of gob side entry retaining face end support of the present invention is: as shown in Figure 4, coal-face installs the gob side entry retaining face end support that multiple stage is parallel to each other, respectively 1. number, number 2., number 3., number 4., number 1., number 2., number 3., 4. number it is arranged close in coal-face crossheading 16 and gob side entry 15, before coal cutting, a volume wire netting 13 is laid in net laying mechanism, the telescopic drawer 9 that wire netting 13 is walked around on net laying mechanism extends to rear, then start to mine, mine after a cutter, set cap 1 is reduced by hydraulic vertical prop 4 and double leval jib 3, the lateral attitude of trough girder 6 is regulated by oil cylinder 12, avoid the anchor cable on coal-face crossheading 16 inside ceiling panel, then start to try to stop people from fighting each other, after a step pitch of trying to stop people from fighting each other, rise the back timber 1 of gob side entry retaining face end support, and supporting roof, try to stop people from fighting each other in process, wire netting 13 extends laying automatically backward, circulate successively, achieve and mine and the parallel operations of lapping after frame, protect top board anchor cable simultaneously, rear extensible canopy 5 stretches out when the top telescoping drawer of net laying mechanism is fallen.After circulation reaches certain step pitch, start the artificial wall 14 of casting concrete, form gob side entry 15.
The gob side entry retaining face end support of the present invention passes through back timber 1; one end of back timber 1 is provided with rear extensible canopy 5; rear extensible canopy 5 extends to inside net laying mechanism; shorten unsupported back span; protection operating personnel's safety, it is possible to lapping after frame, can protect top board anchor cable not to be damaged simultaneously; ensure gob side entry retaining roof timbering effect, be widely used in the industry such as colliery, metallurgy.
Claims (6)
1. gob side entry retaining face end support, including electrohydraulic control system, back timber (1), base (2), double leval jib (3), hydraulic vertical prop (4), it is characterized in that: one end of described back timber (1) is provided with rear extensible canopy (5), back timber (1) is provided with two trough girders being parallel to each other (6) along back timber (1) length direction；Described back timber (1) is connected with base (2) by hydraulic vertical prop (4) and double leval jib (3)；Described base (2) is connected with net laying mechanism, net laying mechanism includes the casing (7) of L-type, one end of casing (7) is connected with base (2), and the other end of casing (7) is connected with telescopic drawer (9) by lapping oil cylinder (8).
2. gob side entry retaining face end support according to claim 1, it is characterized in that: described rear extensible canopy (5) is built in one end of back timber (1), and rear extensible canopy (5) end face is not more than 50mm to the distance of drawer (9).
3. gob side entry retaining face end support according to claim 1, it is characterized in that: described each trough girder (6) is provided with two or more cushion block (10), each trough girder (6) is all vertically installed with the body of rod (11), the body of rod (11) is all inserted perpendicularly in the horizontal preformed groove of back timber (1), and the body of rod (11) is connected with back timber (1) each through oil cylinder (12).
4. gob side entry retaining face end support according to claim 1, it is characterised in that: one end of described casing (7) is hinged with base (2).
5. gob side entry retaining face end support according to claim 1, it is characterised in that: described hydraulic vertical prop (4) arranges four, and four hydraulic vertical props (4) are in rectangular layout.
6. the gob side entry retaining face end support according to any one of claim 1-5, it is characterised in that: described drawer (9) is inserted the other end of casing (7) and is connected with casing (7) by two lapping oil cylinders (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237742.5A CN105715289B (en) | 2016-04-15 | 2016-04-15 | Gob side entry retaining face end support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237742.5A CN105715289B (en) | 2016-04-15 | 2016-04-15 | Gob side entry retaining face end support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715289A true CN105715289A (en) | 2016-06-29 |
| CN105715289B CN105715289B (en) | 2018-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610237742.5A Active CN105715289B (en) | 2016-04-15 | 2016-04-15 | Gob side entry retaining face end support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105715289B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285692A (en) * | 2016-08-31 | 2017-01-04 | 中国神华能源股份有限公司 | A kind of construction method of gob side entry retaining |
| CN107227970A (en) * | 2017-06-20 | 2017-10-03 | 山西平阳重工机械有限责任公司 | Electro-hydraulic control termination lapping hydraulic bracket |
| CN108222980A (en) * | 2018-03-22 | 2018-06-29 | 山西平阳重工机械有限责任公司 | End hydraulic control support with mesh-layingdevice |
| CN109838265A (en) * | 2019-03-18 | 2019-06-04 | 中国矿业大学 | The device of top plate pallet is protected when a kind of gob side entry retaining face end support migrates |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3710839A1 (en) * | 1986-04-03 | 1987-10-08 | Bytomsko Rudzkie Gwarectwo Weg | METHOD OF MOVING THE STRAIN SPACES AND DAM FOR THE TRANSFER OF SPREAD SPACES |
| CN201246177Y (en) * | 2008-07-26 | 2009-05-27 | 陈东 | Cannon extraction working face hydraulic support |
| CN203321561U (en) * | 2013-06-17 | 2013-12-04 | 陕西开拓建筑科技有限公司 | Gob-side entry retaining hydraulic support with top net paved on support tail |
| CN204371394U (en) * | 2014-12-20 | 2015-06-03 | 曲天智 | Temporary support for drivage face hydraulic support |
| CN205558951U (en) * | 2016-04-15 | 2016-09-07 | 陕西开拓建筑科技有限公司 | Gob entry face -end support |
-
2016
- 2016-04-15 CN CN201610237742.5A patent/CN105715289B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3710839A1 (en) * | 1986-04-03 | 1987-10-08 | Bytomsko Rudzkie Gwarectwo Weg | METHOD OF MOVING THE STRAIN SPACES AND DAM FOR THE TRANSFER OF SPREAD SPACES |
| CN201246177Y (en) * | 2008-07-26 | 2009-05-27 | 陈东 | Cannon extraction working face hydraulic support |
| CN203321561U (en) * | 2013-06-17 | 2013-12-04 | 陕西开拓建筑科技有限公司 | Gob-side entry retaining hydraulic support with top net paved on support tail |
| CN204371394U (en) * | 2014-12-20 | 2015-06-03 | 曲天智 | Temporary support for drivage face hydraulic support |
| CN205558951U (en) * | 2016-04-15 | 2016-09-07 | 陕西开拓建筑科技有限公司 | Gob entry face -end support |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285692A (en) * | 2016-08-31 | 2017-01-04 | 中国神华能源股份有限公司 | A kind of construction method of gob side entry retaining |
| CN106285692B (en) * | 2016-08-31 | 2019-04-05 | 中国神华能源股份有限公司 | A kind of construction method of gob side entry retaining |
| CN107227970A (en) * | 2017-06-20 | 2017-10-03 | 山西平阳重工机械有限责任公司 | Electro-hydraulic control termination lapping hydraulic bracket |
| CN108222980A (en) * | 2018-03-22 | 2018-06-29 | 山西平阳重工机械有限责任公司 | End hydraulic control support with mesh-layingdevice |
| CN109838265A (en) * | 2019-03-18 | 2019-06-04 | 中国矿业大学 | The device of top plate pallet is protected when a kind of gob side entry retaining face end support migrates |
| WO2020186710A1 (en) * | 2019-03-18 | 2020-09-24 | 中国矿业大学 | Apparatus for protecting top plate tray during gob-side entry retaining end bracket migration |
| US10822949B1 (en) | 2019-03-18 | 2020-11-03 | China University Of Mining And Technology | Apparatus for protecting roof tray when gob-side entry retaining end support migrates |
| CN109838265B (en) * | 2019-03-18 | 2024-04-02 | 中国矿业大学 | Device for protecting roof tray during migration of gob-side entry retaining end bracket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105715289B (en) | 2018-05-08 |
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