CN203905953U - Hard rock fast tunneling machine - Google Patents
Hard rock fast tunneling machine Download PDFInfo
- Publication number
- CN203905953U CN203905953U CN201420225645.0U CN201420225645U CN203905953U CN 203905953 U CN203905953 U CN 203905953U CN 201420225645 U CN201420225645 U CN 201420225645U CN 203905953 U CN203905953 U CN 203905953U
- Authority
- CN
- China
- Prior art keywords
- compartment
- cutterhead
- hard rock
- housing
- speedy drivage
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a hard rock fast tunneling machine, which comprises a casing, wherein the front end of the casing is provided with cutter heads; the cutter heads comprise a center cutter head arranged along a center axis of the casing; a plurality of section cutter heads are arranged on the outer periphery of the center cuter head; each section cutter head is detachably connected with the center cutter head; the adjacent section cutter heads are also detachably connected; and the front part of the casing is provided with a passage leading to the front end of the casing in the radial direction. Through the separated design of the cutter heads, when one cutter head is worn, the worn cutter head can be singly dismounted and singly repaired, so problems of time waste, labor waste and the like caused by integral cutter head repair can be avoided, and the tunneling speed of the tunneling machine is increased. In addition, percussion devices are adopted for realizing the percussion on the front strata, and are in extrusion matching with the rotating cutter heads for realizing the function of fast tunneling a hard rock roadway.
Description
Technical field
The utility model relates to a kind of heading equipment, refers to particularly a kind of hard rock speedy drivage machine.
Background technology
According to incompletely statistics, through colliery in recent years, rectify restructuring, China 10,000 many places, colliery that coexist, state-owned emphasis and state-owned local mine 2704 places, predict the year two thousand twenty raw coal consumption figure according to national conditions analysis and research group of the Chinese Academy of Sciences and will reach 2,400,000,000 tons.In addition, according to incompletely statistics, other mine of China, as there are 20,000 many places in the non-collieries such as copper mine, iron ore, phosphorus ore, nonferrous metals ore.As can be seen here, China's mining industry has occupied very large development space.Further investigation reveals that, China's mine industry, application for hard rock speedy drivage machine is almost blank, the mine industry accounting for more than 85 ﹪ all exists machinery degree of changing into not high, the form exploitation of be also confined to traditional perforating, blowing out, safety and unreliable, and efficiency is low, for the development of mine industry brings restriction.
China is the country of the many water in mountain more than, densely populated China, and transport development has become the current most important thing, and at the bottom of urban track traffic tunnel, railway tunnel, highway tunnel, seabed tunnel, river, the engineering industry such as tunnel has wide future develop.According to incompletely statistics, China has successfully built at present more than 7500, has always extended the railway tunnel of more than 4500 kilometer, and tunnel total quantity is all at the forefront in the world.In follow-up tunnel construction, will have a large amount of length to surpass 20 kilometers, and the rock tunnel of Polodyakonov coefficient f > 9 is built.Through investigation, domestic and international existing shield machine all cannot be adapted to the rock tunnel of overlength degree and high rigidity.At present, driving for hard rock tunnel, main manufacturer has that U.S. Luo Binsi, German Hai Duanke company, the special company of German Weir, Canada's farad are special, MIT, it is all the TBM hard rock rotary squeezing driving technology adopting, for Polodyakonov coefficient f > 9 or superhard rock tunnel, the TBM hard rock rotary squeezing driving technology of above producer but cannot be suitable for.
Tradition hard rock shield machine adopts rotation, extruding to realize driving, and its operating power consumption is large, cutter material requires high and loss is large.According to statistics, every kilometer of driving must be changed cutter, and once the cutter expense of the loss of changing is with regard to nearly more than 200 ten thousand yuan, and for the rock tunnel of Polodyakonov coefficient f > 9, current shield machine is still helpless.
In addition, tradition hard rock shield machine starts to drop into construction once enter tunnel, cannot return, must guarantee tunnel get through after from tunnel end out, if cutterhead appears in equipment in tunnel, wearing and tearing time are the unsolved problems of shield structure industry to the replacing of cutterhead always.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, and a kind of hard rock speedy drivage machine that can change cutter head of shield machine efficiently is rapidly provided.
The technical solution of the utility model is: a kind of hard rock speedy drivage machine, it comprises housing, the front end of described housing is provided with cutterhead, it is characterized in that: described cutterhead comprises the center cutterhead arranging along housing central axis, the periphery of described center cutterhead is provided with a plurality of sectional type cutterheads, described in each, sectional type cutterhead and center cutterhead removably connect, and between adjacent described sectional type cutterhead, also removably connect; The front portion of described housing radially offers a passage that can enter housing front end.
In such scheme:
Described sectional type cutterhead and center cutterhead removably connect by bolt, between adjacent sectional type cutterhead, also by bolt, removably connect.
Described housing is provided with the access door that passage is opened or closed.
On described center cutterhead and sectional type cutterhead, be at least provided with a girff through hole, in described girff through hole, be fixed with the girff being mated, the inside and outside both ends open of described girff, described girff the inner is fixedly connected with hobboing cutter cover plate, described hobboing cutter cover plate is provided with hobboing cutter through hole along axis, in described hobboing cutter through hole, is provided with the hobboing cutter that is mated and is slidably connected; Described girff outer end is fixedly connected with holder, described holder outer end is fixedly connected with percussion mechanism, the output shaft of described percussion mechanism is passed in holder end face along the impact through hole of axis setting and is fixedly connected with hobboing cutter, and the output shaft of described percussion mechanism is slidably connected with impact through hole; Between described hobboing cutter both sides and holder, be equipped with stage clip.
Also comprise conveying mechanism, controlling organization and actuating unit, described conveying mechanism comprises the conveying worm that passes along housing axle center, earth material is transported to the belt conveyer at housing rear and controls the telescopic oil cylinder that development machine moves or stops, the front end of described conveying worm is connected with the charging aperture of cutterhead, the rear end of described conveying worm is arranged on belt conveyer, described belt conveyer is obliquely installed, and described telescopic oil cylinder is arranged on the housing being passed by conveying worm; Described controlling organization is arranged on the first compartment, described the first compartment is connected with the housing being passed by conveying worm by connecting rod, described actuating unit is arranged on the second compartment and the 3rd compartment, described the first compartment, the second compartment and the 3rd compartment set gradually from front to back, between each compartment, by connecting rod, connect.
Described the first compartment is provided with tail sealing pump.
Described actuating unit comprises air compressor machine, gasholder, transformer case, described air compressor machine is arranged on the second compartment, described gasholder is arranged on and connects between the second compartment and the coupling bar in the 3rd compartment, and described air compressor machine is connected with gasholder, and described transformer case is arranged on the 3rd compartment.
On described the second compartment, be also provided with water tank, described water tank is transported to rock stratum to be tunneled, the place ahead by the foam injected system being arranged on the second compartment by water transport.
Described the 3rd compartment is provided with air funnel, and described air funnel extends to cutterhead.
The described housing both sides of being passed by conveying worm are provided with stabilizer.
The utility model by by cutterhead separation design, when cutterhead weares and teares, can be dismantled separately and change wearing and tearing cutterhead, and it is keeped in repair separately, the factor such as in the time of can avoiding keeping in repair solid cutter, takes time and effort, and development machine driving speed is provided.
In addition, the utility model adopts percussion mechanism to impact front geological, and extruding coordinates with rotary head, realizes hard rock tunnel speedy drivage function.
Accompanying drawing explanation
Fig. 1 is that cutterhead of the present utility model is arranged schematic diagram;
Fig. 2 is cutter head structure schematic diagram of the present utility model;
Fig. 3 is the structure top view of hard rock speedy drivage machine of the present utility model;
Fig. 4 is A-A generalized section in Fig. 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
With reference to figure 1, a kind of hard rock speedy drivage machine of the present embodiment, it comprises housing, front end at housing is provided with cutterhead, cutterhead comprises the center cutterhead 1 arranging along housing central axis, the periphery of center cutterhead 1 is provided with a plurality of sectional type cutterheads 2, and each sectional type cutterhead 2 removably connects by bolt with center cutterhead 2, between adjacent sectional type cutterhead 2 also by removably connecting.The utility model is that cutterhead is carried out to separation design, when cutterhead weares and teares, can dismantle separately and change wearing and tearing cutterhead, and it is keeped in repair separately, the factor such as in the time of can avoiding keeping in repair solid cutter, takes time and effort, and development machine driving speed is provided.
In addition, in the front portion of housing, radially offer a passage that can enter housing front end, and on housing, be provided with the access door that passage is opened or closed.Operating personnel can enter housing front end by passage, and the cutterhead of wearing and tearing is repaired or replaced, and when this cutterhead can normally be worked, operating personnel Cong Yuan returns on road, closing passage door, and development machine remains in operation, and can greatly improve drivage efficiency.
With reference to figure 2, in the present embodiment, on center cutterhead 1 and sectional type cutterhead 2, be at least provided with a girff through hole 3, in girff through hole 3, be fixed with the girff 4 being mated, girff 4 is welded to connect with cutterhead.At the inside and outside both ends open of girff 4, girff 4 the inners are fixedly connected with hobboing cutter cover plate 5, and girff 4 outer ends are fixedly connected with holder 6, and girff 4, hobboing cutter cover plate 5 surround a spatial accommodation with holder 6.
Hobboing cutter cover plate 5 is provided with hobboing cutter through hole 5.1 along axis, is provided with the hobboing cutter 7 that is mated and is slidably connected in hobboing cutter through hole 5.1, and hobboing cutter 7 is arranged in spatial accommodation, and can in spatial accommodation, carry out displacement slip.
Holder 6 outer ends are fixedly connected with percussion mechanism 8, and the output shaft 8.1 of percussion mechanism 8 is passed in holder 6 end faces and is fixedly connected with along the impact through hole 6.1 of axis setting and with hobboing cutter 7, and this output shaft 8.1 is slidably connected with impact through hole 6.1; Between hobboing cutter 7 both sides and holder 6, be equipped with stage clip 9.Its operating principle is: forwards geology output of percussion mechanism 8 vibration, drive hobboing cutter 7 reaches, spacing due to stage clip 9, percussion mechanism 8 and hobboing cutter 7 stop reach after forwards moving to the extreme position of stage clip 9, under the extension force of stage clip 9, reset subsequently, circulating subsequently, it is loose that the place ahead soil property is vibrated.
In 8 pairs of the place ahead soil properties of percussion mechanism, vibrate in loose process, mutually combine with cutterhead rotary squeezing, can realize hard rock tunnel speedy drivage function, the rock material that its driving produces, by self transport establishment, be delivered to machine afterbody, rock be discharged into elevating conveyor and transported.
Percussion mechanism 8 of the present utility model is chosen as air pressure jerk or hydraulic pressure jerk
The utility model adopts novel high-frequency air pressure jerk and hydraulic pressure jerk as percussion mechanism, front geological to be impacted, and extruding coordinates with rotary head, realize hard rock tunnel speedy drivage function, the rock material that its driving produces, by self transport establishment, be delivered to machine afterbody, rock be discharged into elevating conveyor and transported.
In the present embodiment:
With reference to figure 3, Fig. 4, the hard rock speedy drivage machine of the present embodiment also comprises conveying mechanism, controlling organization and actuating unit.
Conveying mechanism comprises the conveying worm 9 passing along housing axle center, earth material is transported to the belt conveyer 10 at housing rear and controls the telescopic oil cylinder 11 that development machine moves or stops, the front end of conveying worm 9 is connected with the charging aperture of cutterhead, the rear end of conveying worm 9 is arranged on belt conveyer 10, belt conveyer 10 is obliquely installed, telescopic oil cylinder 11 is arranged on the housing being passed by conveying worm 9, telescopic oil cylinder 11 is controlled whole development machine reach or is stopped, and the rock material of development machine the place ahead excavation is by conveying worm 9, belt conveyer 10 is transported to development machine rear and transports.
Controlling organization is arranged on the first compartment 12, the first compartment 12 is connected with the housing being passed by conveying worm 9 by connecting rod, actuating unit is arranged on the second compartment 13 and the 3rd compartment 14, the first compartment 12, the second compartment 13 and the 3rd compartment 14 set gradually from front to back, between each compartment, by connecting rod, connect.
The first compartment 12 is provided with tail sealing pump 15, and tail sealing pump 15 is devices for hard rock speedy drivage machine lubricate.
Actuating unit comprises air compressor machine 16, gasholder 17, transformer case 18, air compressor machine 16 is arranged on the second compartment 13, gasholder 17 is arranged on and connects between the second compartment 13 and the coupling bar in the 3rd compartment 14, air compressor machine 16 is connected with gasholder 17, for the percussion mechanism 8 in development machine the place ahead provides air pressure, and transformer case 18 is arranged on the 3rd compartment 14, for whole development machine provides electric power source.
On the second compartment 13, be also provided with water tank 19, water tank 19 is transported to rock stratum to be tunneled, the place ahead by the foam injected system 22 being arranged on the second compartment 13 by water transport, is rock stratum to be tunneled cooling, and then reaches the temperature while reducing cutterhead construction.
The 3rd compartment 14 is provided with air funnel 20, and air funnel 20 extends to cutterhead, and the dust that the place ahead driving is produced is discharged.
In addition, the housing both sides of being passed by conveying worm 9 are provided with stabilizer 21, and stabilizer 21 is mainly solve the walking of hard rock speedy drivage machine and stablize the device of complete machine work, and its operating principle is: by oil cylinder, advanced, be supported on the wall of lane; When complete machine is pushed ahead, rear stabilizer is supported on the wall of lane, and front stabilizer draws in, and walking oil cylinder is pushed ahead, and after oil cylinder stroke has advanced, front stabilizer is supported on the wall of lane, and rear stabilizer draws in, and walking oil cylinder is regained, and realizes tail shield and drags forward.
The utility model has solved hard grind and has wiped the large and cutter loss large deficiency of the power consumption producing, also solved the limitation that shield machine cannot tunnel the rock tunnel of Polodyakonov coefficient f > 9 in the past simultaneously, when controlling cost, perfection has realized the function of hard rock speedy drivage.
Claims (10)
1. a hard rock speedy drivage machine, it comprises housing, the front end of described housing is provided with cutterhead, it is characterized in that: described cutterhead comprises the center cutterhead (1) arranging along housing central axis, the periphery of described center cutterhead (1) is provided with a plurality of sectional type cutterheads (2), described in each, sectional type cutterhead (2) removably connects with center cutterhead (1), between adjacent described sectional type cutterhead (2), also removably connects; The front portion of described housing radially offers a passage that can enter housing front end.
2. hard rock speedy drivage machine according to claim 1, is characterized in that: described sectional type cutterhead (2) removably connects by bolt with center cutterhead (1), between adjacent sectional type cutterhead (2), also by bolt, removably connects.
3. hard rock speedy drivage machine according to claim 1, is characterized in that: described housing is provided with the access door that passage is opened or closed.
4. hard rock speedy drivage machine according to claim 1, it is characterized in that: on described center cutterhead (1) and sectional type cutterhead (2), be at least provided with a girff through hole (3), in described girff through hole (3), be fixed with the girff (4) being mated, the inside and outside both ends open of described girff (4), described girff (4) the inner is fixedly connected with hobboing cutter cover plate (5), described hobboing cutter cover plate (5) is provided with hobboing cutter through hole (5.1) along axis, is provided with the hobboing cutter (7) that is mated and is slidably connected in described hobboing cutter through hole (5.1); Described girff (4) outer end is fixedly connected with holder (6), described holder (6) outer end is fixedly connected with percussion mechanism (8), the output shaft (8.1) of described percussion mechanism (8) is passed in holder (6) end face along the impact through hole (6.1) of axis setting and is fixedly connected with hobboing cutter (7), and the output shaft (8.1) of described percussion mechanism (8) is slidably connected with impact through hole (6.1); Between described hobboing cutter (7) both sides and holder (6), be equipped with stage clip (9).
5. hard rock speedy drivage machine according to claim 1, it is characterized in that: also comprise conveying mechanism, controlling organization and actuating unit, described conveying mechanism comprises the conveying worm (9) passing along housing axle center, earth material is transported to the belt conveyer (10) at housing rear and controls the telescopic oil cylinder (11) that development machine moves or stops, the front end of described conveying worm (9) is connected with the charging aperture of cutterhead, the rear end of described conveying worm (9) is arranged on belt conveyer (10), described belt conveyer (10) is obliquely installed, described telescopic oil cylinder (11) is arranged on the housing being passed by conveying worm (9), described controlling organization is arranged on the first compartment (12), described the first compartment (12) is connected with the housing being passed by conveying worm (9) by connecting rod, described actuating unit is arranged on the second compartment (13) and the 3rd compartment (14), described the first compartment (12), the second compartment (13) and the 3rd compartment (14) set gradually from front to back, between each compartment, by connecting rod, connect.
6. hard rock speedy drivage machine according to claim 5, is characterized in that: described the first compartment (12) is provided with tail sealing pump (15).
7. hard rock speedy drivage machine according to claim 5, it is characterized in that: described actuating unit comprises air compressor machine (16), gasholder (17), transformer case (18), described air compressor machine (16) is arranged on the second compartment (13), described gasholder (17) is arranged on and connects between the second compartment (13) and the coupling bar in the 3rd compartment (14), described air compressor machine (16) is connected with gasholder (17), and described transformer case (18) is arranged on the 3rd compartment (14).
8. according to the hard rock speedy drivage machine described in claim 5 or 7, it is characterized in that: on described the second compartment (13), be also provided with water tank (19), described water tank (19) is transported to rock stratum to be tunneled, the place ahead by the foam injected system (22) being arranged on the second compartment (13) by water transport.
9. according to the hard rock speedy drivage machine described in claim 5 or 7, it is characterized in that: described the 3rd compartment (14) is provided with air funnel (20), and described air funnel (20) extends to cutterhead.
10. hard rock speedy drivage machine according to claim 5, is characterized in that: the described housing both sides of being passed by conveying worm (9) are provided with stabilizer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225645.0U CN203905953U (en) | 2014-05-05 | 2014-05-05 | Hard rock fast tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225645.0U CN203905953U (en) | 2014-05-05 | 2014-05-05 | Hard rock fast tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905953U true CN203905953U (en) | 2014-10-29 |
Family
ID=51780241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225645.0U Expired - Fee Related CN203905953U (en) | 2014-05-05 | 2014-05-05 | Hard rock fast tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203905953U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368712A (en) * | 2016-11-15 | 2017-02-01 | 中南大学 | Cutter head of full cross-section rock heading machine having impact function |
| CN107100638A (en) * | 2017-04-25 | 2017-08-29 | 封鸿涛 | Automatic soil layer mole and method |
| CN108756911A (en) * | 2018-07-03 | 2018-11-06 | 中铁工程装备集团有限公司 | A kind of sectional type weak soil layering cutterhead |
| CN108915703A (en) * | 2018-06-20 | 2018-11-30 | 苏州智能制造研究院有限公司 | A kind of method of shield excavation machine segmented section conductance tunnels |
| CN110043276A (en) * | 2019-05-22 | 2019-07-23 | 中国铁建重工集团股份有限公司 | Tunnel boring machine, cutter head and hob seat protection structure |
| CN110454186A (en) * | 2019-08-28 | 2019-11-15 | 中铁工程装备集团有限公司 | A kind of TBM cutterhead of integrated high voltage water generating device |
| CN112554898A (en) * | 2020-12-09 | 2021-03-26 | 安徽唐兴机械装备有限公司 | Three-edge hob of push bench |
| CN112879023A (en) * | 2021-02-18 | 2021-06-01 | 清华大学 | Cutter head of tunnel boring machine and tunnel boring machine with cutter head |
-
2014
- 2014-05-05 CN CN201420225645.0U patent/CN203905953U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368712B (en) * | 2016-11-15 | 2018-10-26 | 中南大学 | A kind of full face rock tunnel boring machine cutterhead with impact function |
| CN106368712A (en) * | 2016-11-15 | 2017-02-01 | 中南大学 | Cutter head of full cross-section rock heading machine having impact function |
| CN107100638A (en) * | 2017-04-25 | 2017-08-29 | 封鸿涛 | Automatic soil layer mole and method |
| CN108915703A (en) * | 2018-06-20 | 2018-11-30 | 苏州智能制造研究院有限公司 | A kind of method of shield excavation machine segmented section conductance tunnels |
| CN108756911B (en) * | 2018-07-03 | 2024-03-29 | 中铁工程装备集团有限公司 | Block-type weak soil layering blade disc |
| CN108756911A (en) * | 2018-07-03 | 2018-11-06 | 中铁工程装备集团有限公司 | A kind of sectional type weak soil layering cutterhead |
| CN110043276A (en) * | 2019-05-22 | 2019-07-23 | 中国铁建重工集团股份有限公司 | Tunnel boring machine, cutter head and hob seat protection structure |
| CN110043276B (en) * | 2019-05-22 | 2024-04-23 | 中国铁建重工集团股份有限公司 | Tunnel boring machine, cutter head and hob blade holder protection structure |
| CN110454186A (en) * | 2019-08-28 | 2019-11-15 | 中铁工程装备集团有限公司 | A kind of TBM cutterhead of integrated high voltage water generating device |
| CN112554898B (en) * | 2020-12-09 | 2022-12-09 | 安徽唐兴装备科技股份有限公司 | Three-edge hob of push bench |
| CN112554898A (en) * | 2020-12-09 | 2021-03-26 | 安徽唐兴机械装备有限公司 | Three-edge hob of push bench |
| CN112879023B (en) * | 2021-02-18 | 2022-04-12 | 清华大学 | Cutter head of tunnel boring machine and tunnel boring machine with cutter head |
| CN112879023A (en) * | 2021-02-18 | 2021-06-01 | 清华大学 | Cutter head of tunnel boring machine and tunnel boring machine with cutter head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203905953U (en) | Hard rock fast tunneling machine | |
| CN102364049B (en) | Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof | |
| CN103089266B (en) | Drift-pillar-free sublevel barnyard caving mining method of open pit transferred underground transitional period | |
| CN104047608B (en) | Heading device for hard rock rapid heading machine | |
| RU2645694C2 (en) | Method for separately mining and transporting thick coal seam with gangue, and backfilling goaf with gangue | |
| CN110130899B (en) | Coal mining method without coal pillar, roadway and tunneling in whole mining area | |
| CN202611695U (en) | Novel rectangular coal roadway quick driving and bolting all-in-one machine | |
| CN102606152A (en) | Novel quick digging and anchoring integrated machine for rectangular coal roadway | |
| CN102162364B (en) | Layout method for underground dense-medium shallow-slot coal preparation in coal mine | |
| CN108952748A (en) | A kind of bottom open type TBM integrates cleaning dregs system | |
| CN103790584A (en) | Impact-assisted heading machine for hard rock ore exploitation | |
| CN214616546U (en) | Tunnel boring machine with broken stone protect function | |
| CN109538224A (en) | A kind of novel coal lane high-speed driving machine | |
| CN212389344U (en) | Hard rock cantilever tunneling machine | |
| CN110159289A (en) | A kind of coal mine light section shield excavation machine | |
| CN108457652B (en) | A kind of blockette segmentation full blast pressure shortwall even adopts placement method | |
| CN202645558U (en) | Crawler-type single-head drilling rig coal cutter | |
| CN111997643A (en) | Multi-hammer type tunnel boring machine, control method and application | |
| CN112502707B (en) | Full-well-field coal-pillar-free mining method for paste pre-filling replacement of coal pillars | |
| CN104074516B (en) | A kind of brill formula coal-winning machine filling drill bit | |
| CN202645578U (en) | Full-section rectangular hard-rock heading and anchoring integrated machine | |
| CN203905952U (en) | Tunneling device of hard rock fast tunneling machine | |
| CN116537786A (en) | Mining method for filling and replacing coal pillars without lifting gangue | |
| CN202810858U (en) | Roadway heading machine | |
| CN104564056A (en) | Integrated tunneling and exploring machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20160505 |