CN102606152B - Novel quick digging and anchoring integrated machine for rectangular coal roadway - Google Patents
Novel quick digging and anchoring integrated machine for rectangular coal roadway Download PDFInfo
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- CN102606152B CN102606152B CN201210099033.7A CN201210099033A CN102606152B CN 102606152 B CN102606152 B CN 102606152B CN 201210099033 A CN201210099033 A CN 201210099033A CN 102606152 B CN102606152 B CN 102606152B
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- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000004873 anchoring Methods 0.000 title abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 239000000428 dust Substances 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 9
- 238000005453 pelletization Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a novel quick digging and anchoring integrated machine for a rectangular coal roadway, which comprises a heading machine, a temporary support system, an anchoring system, a conveying system and a dust removing system, and also comprises a support system, wherein a sealing device is arranged between the head of the heading machine and the front of the support system; the sealing device comprises a main body plate, a movable sealing plate and left and right movable sealing plates; support hydraulic cylinders are arranged on the main body plate and an upper movable sealing plate bracket; support hydraulic cylinders are arranged on the main body plate and left and right movable sealing plate brackets as well; meanwhile, an upper movable sealing plate, the left and right movable sealing plates are provided with flexible sealing belts; the front end of a dust removing pipeline of the dust removing system is installed on the main body plate of the sealing device; and the dust removing pipeline is communicated with the space in the front part of the sealing device. The novel quick digging and anchoring integrated machine for the rectangular coal roadway, provided by the invention, employs a novel telescopic cylinder to cut and mold the width of a roadway in one step, therefore, the high efficiency is achieved, and in addition, the damage to a base plate due to repeated displacement is avoided; through cooperation of adjusting oil cylinders with flexible sealing, a top plate and lateral walls are very adaptive, so that dust is prevented from rushing into a rear working space; and meanwhile, a working environment is improved.
Description
Technical field
The present invention relates to mine underground pick anchor construction equipment, particularly relate to a kind of novel rectangular coal road and dig fast anchor all-in-one.
Background technology
Coal mine down-hole tunnel mechanization speedy drivage at present mainly contains three kinds of modes: the first, and traditional single entry driving, work plane capital equipment has development machine, roof-bolter; The second, two lanes driving, adopt continuous miner to tunnel, this tunneling method is supporting advanced roofboltier, continuous miner is in haulage drift driving, roofboltier Zheng carries out bolt support operation in return aircourse, when continuous miner completes a driving circulation time, with roofboltier switch.The third, single tunnelling of Introduced From Abroad pick anchor all-in-one.The shortcoming of existing technique and equipment is: development machine, roof-bolter operating efficiency are low, and it is more applicable small-size coal mines mainly; Two lanes are tunneled this operating type and have been realized the separated of tunnelling and supporting, and can many anchor pole operations simultaneously, and supporting efficiency improves greatly.But for meeting that machine is transferred and the requiring between ，Liang Tiao tunnel every a connection roadway of 50m pick of transportation, this just increases excavation cost, and the machine of adopting in technique replaces and also greatly affected digging efficiency with roofboltier.Therefore adopt pick anchor all-in-one to carry out the main development direction that single tunnelling is current coal road driving, but due to the anchoring time be the digging time 2-3 doubly, therefore how to realize anchoring and synchronize with digging, raising digging efficiency, is mine problem demanding prompt solution.
Summary of the invention
To the object of the invention is in order addressing the above problem, a kind of quick pick anchor all-in-one of novel full coal petrography rectangular shaped roadways to be provided.
Technical scheme of the present invention is: a kind of novel rectangular coal road is dug anchor all-in-one fast, comprise development machine, temporary lining system, anchor system, induction system, dust pelletizing system, described development machine is positioned at front portion, anchor system is arranged on development machine rear portion, the anterior left and right sides of development machine rear portion and anchor system and top are temporary lining system, and described induction system is the drag conveyor that is arranged on development machine, anchor system inside, between the head of described development machine and support system front portion, be provided with sealing device, sealing device comprises main board, be hinged on the upper movable sealing plate on main board top, be hinged on the left and right movable sealing plate of main board both sides, at main board and upper movable sealing timbering, be provided with supporting cylinder, at main board and left and right movable sealing timbering, be also provided with supporting cylinder, at upper movable sealing plate, the outer edge of left and right movable sealing plate is provided with flexible sealing band, the front end of the cleaning shaft of described dust pelletizing system is arranged on the main board of sealing device, the space of cleaning shaft communication seals device front portion.
Described development machine comprises cutting drum, rewinding shovel, and described drag conveyor is connected to rewinding shovel rear portion.
Described support system comprises fore-stock and after-poppet, described fore-stock comprises base, back timber, front-axle beam, front stretching beam, side outrigger, side extensible canopy, column, end regulating mechanism, frame linking jack, front rod, back link, upper connecting rod, frame linking beam, described after-poppet comprises back timber, front-axle beam, base, between the base rear portion of described fore-stock and the base front portion of after-poppet, is connected with hydraulic Step Cylinder.
Described anchor system comprises three roofboltiers, the rig of First roofboltier is top rig, the rig of second roofboltier is top rig and sidepiece rig, the rig of the 3rd roofboltier is sidepiece rig, between the front portion of First roofboltier and development machine rear portion, is connected with adjusting oil cylinder; In the middle of on three described roofboltiers, be provided with drag conveyor;
Described rig bottom-hinged, on drill carriage base plate, is also connected with angular adjustment oil cylinder between described rig and drill carriage surface.
On the main board of described sealing device, be also provided with mobilizable watch window.
Beneficial effect of the present invention
This pick anchor equipment adopts the critical piece of the continuous miner of existing maturation, adopts Novel stretchable cylinder, a cut moulding span length, and efficiency is high, avoids repeating the destruction of displacement to base plate simultaneously.
This pick anchor equipment sealing device top and lateral layout have adjusting oil cylinder, coordinate soft seal to have good compliance to top board and lateral wall, avoid dust to pour in rear portion working space, coordinate air draft pipe, deduster to form ventilation dust falling system simultaneously, improved operating environment.
This pick anchor equipment adopts advanced hydraulic support group to carry out temporary lining and protection to top board, and this support group has lapping function simultaneously, by moving frame, changes step to guarantee that unsupported back span, in the scope of safety, has improved supporting efficiency, has guaranteed operating personnel's safety.
After this pick anchor equipment, supporting drill carriage group is carried out synchronous anchoring operation, and crawler type walking mechanism, to base plate strong adaptability; By the mode of dislocation complement, complete the anchoring of whole section, supporting efficiency is high; Drill carriage group carries stand-by power simultaneously, after disintegration, can carry out other operation, maneuverability.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram that this novel rectangular coal road is dug anchor all-in-one fast;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the left TV structure schematic diagram of Fig. 1;
Fig. 4 digs one of perspective view of anchor all-in-one fast for this novel rectangular coal road;
Fig. 5 for this novel rectangular coal road dig fast anchor all-in-one perspective view two;
Fig. 6 is that owner's TV structure schematic diagram is closed in the development machine of this equipment and the installation of sealing device;
Fig. 7 is the plan structure schematic diagram of Fig. 6;
Fig. 8 is that the development machine of this equipment and the installation of sealing device are related to perspective view;
Fig. 9 is the perspective view of the sealing device of this equipment;
Figure 10 is the perspective view of the support system of this equipment;
Figure 11 is the main TV structure schematic diagram of the anchor system of this equipment;
Figure 12 is the plan structure schematic diagram of the anchor system of this equipment;
Figure 13 is the left TV structure schematic diagram of the anchor system of this equipment;
Figure 14 is the perspective view of the anchor system of this equipment;
The cutting drum of 1. development machines in figure, 2. the rewinding of development machine is shoveled, 3. the fore-stock of support system, 4. the after-poppet of support system, 5. sealing device, 6. dust pelletizing system, 7. hydraulic Step Cylinder, 8. anchor system, 9. induction system is positioned at the drag conveyor on anchor system, 10. regulate oil cylinder, 11. induction systems are positioned at the drag conveyor on development machine, 3-1. front stretching beam wherein, 3-2. front-axle beam, 3-3. back timber, 3-4. side outrigger, 3-5. side extensible canopy, 3-6. column, 3-7. base, regulating mechanism at the bottom of 3-8., 3-9. frame linking jack, 3-10. front rod, 3-11. back link, 3-12. top connecting rod, 3-13. frame linking beam, 4-1. front-axle beam, 4-2. back timber, 5-1. main board, the upper movable sealing plate of 5-2., 5-3. side movable sealing plate, 5-4. support cylinder, 5-5. flexible sealing band, 5-6. cleaning shaft installing hole, 5-7. watch window, 5-8. hinge.
The specific embodiment
Embodiment: referring to Fig. 1-Figure 14, in figure, a kind of novel rectangular coal road is dug anchor all-in-one fast, comprise development machine, temporary lining system, anchor system, induction system, dust pelletizing system, described development machine is positioned at front portion, anchor system is arranged on development machine rear portion, the anterior left and right sides of development machine rear portion and anchor system and top are temporary lining system, and described induction system is the drag conveyor that is arranged on development machine, anchor system inside, between the head of described development machine and support system front portion, be provided with sealing device, sealing device comprises main board, be hinged on the upper movable sealing plate on main board top, be hinged on the left and right movable sealing plate of main board both sides, at main board and upper movable sealing timbering, be provided with supporting cylinder, at main board and left and right movable sealing timbering, be also provided with supporting cylinder, at upper movable sealing plate, the outer edge of left and right movable sealing plate is provided with flexible sealing band, the front end of the cleaning shaft of described dust pelletizing system is arranged on the main board of sealing device, the space of cleaning shaft communication seals device front portion.Described development machine comprises cutting drum, rewinding shovel, and described drag conveyor is connected to rewinding shovel rear portion.Described support system comprises fore-stock and after-poppet, described fore-stock comprises base, back timber, front-axle beam, front stretching beam, side outrigger, side extensible canopy, column, end regulating mechanism, frame linking jack, front rod, back link, upper connecting rod, frame linking beam, described after-poppet comprises back timber, front-axle beam, base, between the base rear portion of described fore-stock and the base front portion of after-poppet, is connected with hydraulic Step Cylinder.Described anchor system comprises three roofboltiers, the rig of First roofboltier is top rig, the rig of second roofboltier is top rig and sidepiece rig, the rig of the 3rd roofboltier is sidepiece rig, between the front portion of First roofboltier and development machine rear portion, is connected with adjusting oil cylinder; In the middle of on three described roofboltiers, be provided with drag conveyor; Described rig bottom-hinged, on drill carriage base plate, is also connected with angular adjustment oil cylinder between described rig and drill carriage surface.On the main board of described sealing device, be also provided with mobilizable watch window.
The course of work of this equipment:
The cutting drum of development machine carries out cut driving in front portion to coal or rock, the coal that cut gets off or rock are received by rewinding shovel below, then by induction system, rearward carry, the upper movable sealing plate of the sealing device of this equipment, left and right movable sealing plate is by the driving of supporting cylinder, can form a seal cavity with sidewall and the top board in tunnel, cutting drum, rewinding shovel is isolated in the enclosure space in the place ahead, the pipeline of dust pelletizing system is extracted the contaminated air in this enclosure space out, seal cavity forms negative pressure, thereby reach dustproof, the effect of depositing dust.
In the development machine work of front end, the anchor system at rear portion is also carrying out anchoring operation simultaneously, because this equipment has been installed many anchoring drill carriages, by loopy moving, dislocation complement, realizes the synchronization job of anchoring and driving; Thereby improved pick anchor efficiency.
The support system of this equipment can be realized temporary lining system with the movement of development machine by the cooperation of extensible canopy and hydraulic Step Cylinder, between development machine and anchor system, by what regulate oil cylinder, is used for realizing advancing of anchor system.
Claims (6)
1. novel rectangular coal road is dug anchor all-in-one fast, comprise development machine, temporary lining system, anchor system, induction system, dust pelletizing system, it is characterized in that: described development machine is positioned at front portion, anchor system is arranged on development machine rear portion, the anterior left and right sides of development machine rear portion and anchor system and top are temporary lining system, and described induction system is the drag conveyor that is arranged on development machine, anchor system inside, between the head of described development machine and temporary lining system front portion, be provided with sealing device, sealing device comprises main board, be hinged on the upper movable sealing plate on main board top, be hinged on the left and right movable sealing plate of main board both sides, at main board and upper movable sealing timbering, be provided with supporting cylinder, at main board and left and right movable sealing timbering, be also provided with supporting cylinder, at upper movable sealing plate, the outer edge of left and right movable sealing plate is provided with flexible sealing band, the front end of the cleaning shaft of described dust pelletizing system is arranged on the main board of sealing device, the space of cleaning shaft communication seals device front portion.
2. novel rectangular coal road according to claim 1 is dug anchor all-in-one fast, it is characterized in that: described development machine comprises cutting drum, rewinding shovel, and described drag conveyor is connected to rewinding shovel rear portion.
3. novel rectangular coal road according to claim 1 is dug anchor all-in-one fast, it is characterized in that: described support system comprises fore-stock and after-poppet, described fore-stock comprises base, back timber, front-axle beam, front stretching beam, side outrigger, side extensible canopy, column, end regulating mechanism, frame linking jack, front rod, back link, upper connecting rod, frame linking beam, described after-poppet comprises back timber, front-axle beam, base, between the base rear portion of described fore-stock and the base front portion of after-poppet, is connected with hydraulic Step Cylinder.
4. novel rectangular coal road according to claim 1 is dug anchor all-in-one fast, it is characterized in that: described anchor system comprises three roofboltiers, the rig of First roofboltier is top rig, the rig of second roofboltier is top rig and sidepiece rig, the rig of the 3rd roofboltier is sidepiece rig, between the front portion of First roofboltier and development machine rear portion, is connected with adjusting oil cylinder; Three described roofboltiers are provided with described drag conveyor.
5. novel rectangular coal road according to claim 4 is dug anchor all-in-one fast, it is characterized in that: described rig bottom-hinged, on drill carriage base plate, is also connected with angular adjustment oil cylinder between described rig and drill carriage surface.
6. novel rectangular coal road according to claim 4 is dug anchor all-in-one fast, it is characterized in that: on the main board of described sealing device, be also provided with mobilizable watch window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099033.7A CN102606152B (en) | 2012-04-06 | 2012-04-06 | Novel quick digging and anchoring integrated machine for rectangular coal roadway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099033.7A CN102606152B (en) | 2012-04-06 | 2012-04-06 | Novel quick digging and anchoring integrated machine for rectangular coal roadway |
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| CN102606152A CN102606152A (en) | 2012-07-25 |
| CN102606152B true CN102606152B (en) | 2014-01-15 |
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| CN201210099033.7A Active CN102606152B (en) | 2012-04-06 | 2012-04-06 | Novel quick digging and anchoring integrated machine for rectangular coal roadway |
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| CN103899319B (en) * | 2014-03-19 | 2016-09-21 | 山西潞安环保能源开发股份有限公司漳村煤矿 | Pick anchor continuous and automatic fast digging technique |
| CN105370275B (en) * | 2014-08-09 | 2018-07-13 | 内蒙古维维能源有限公司 | Cantilevered longitudinal axis anchor driving machine and step-by-step construction stage are at lane coal road construction technology |
| CN104500086B (en) * | 2015-01-15 | 2017-01-18 | 山西大同大学 | Unmanned roadway driving and anchoring all-in-one machine |
| CN104747201B (en) * | 2015-02-12 | 2017-02-01 | 中铁工程装备集团有限公司 | Rapid drivage-anchoring integrated equipment for coal road under instable surrounding rock condition |
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| CN112576254A (en) * | 2020-12-02 | 2021-03-30 | 中国煤炭科工集团太原研究院有限公司 | Anchoring mechanism of heading machine |
| CN117868926B (en) * | 2024-03-11 | 2024-05-10 | 山西阳煤集团南岭煤业有限公司 | Advanced temporary support device and process for working face of heading machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT399202B (en) * | 1988-08-23 | 1995-04-25 | Voest Alpine Bergtechnik | DEVICE FOR TENSIONING A DRIVING MACHINE IN A TRACK |
| CN1707066A (en) * | 2004-06-04 | 2005-12-14 | 王文凯 | Automatic whole-section external rotor low-speed motor cutting rotation drum anchor driving machine |
| CN201344032Y (en) * | 2008-12-30 | 2009-11-11 | 三一重型装备有限公司 | Complete device integrating the tunneling, protection and anchoring |
| AT509059B1 (en) * | 2010-03-15 | 2011-06-15 | Sandvik Mining & Constr Oy | BORING MACHINE |
| CN202611695U (en) * | 2012-04-06 | 2012-12-19 | 中铁隧道装备制造有限公司 | Novel rectangular coal roadway quick driving and bolting all-in-one machine |
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Owner name: CHINA RAILWAY MANUFACTURING EQUIPMENT GROUP CO., L Free format text: FORMER NAME: CHINA RAILWAY TUNNELING EQUIPMENT CO., LTD. |
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Address after: 450016 No. sixth, 99 Avenue, Zhengzhou Economic Development Zone, Henan, China Patentee after: China Railway Manufacturing Equipment Group Co., Ltd. Address before: 450016 No. sixth, 99 Avenue, Zhengzhou Economic Development Zone, Henan, China Patentee before: China Railway Tunneling Equipment Co., Ltd. |