CN114165250A - Coal mine arch section cutting system - Google Patents
Coal mine arch section cutting system Download PDFInfo
- Publication number
- CN114165250A CN114165250A CN202111343365.0A CN202111343365A CN114165250A CN 114165250 A CN114165250 A CN 114165250A CN 202111343365 A CN202111343365 A CN 202111343365A CN 114165250 A CN114165250 A CN 114165250A
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- cutting device
- cutting
- walking
- self
- section
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- 238000005520 cutting process Methods 0.000 title claims abstract description 180
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000009966 trimming Methods 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000005065 mining Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/03—Driving non-circular tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
Abstract
The invention belongs to the technical field of coal mine tunneling equipment, and particularly relates to a coal mine arch-shaped section cutting system. The device comprises a self-walking round section cutting device, a following type trimming cutting device, an anchoring system, a rear matched power system and a discharging system, wherein the self-walking round section cutting device is arranged at the foremost end to cut a round section roadway, the following type trimming cutting device is arranged behind the self-walking round section cutting device, the following type trimming cutting device and the self-walking round section cutting device automatically control the distance between the self-walking round section cutting device and the following type trimming cutting device through a distance control system, the following type trimming cutting device trims the round section roadway into an arched section roadway, and the following type trimming cutting device is integrated with the anchoring system and is responsible for completing the roadway supporting process; and a rear matched power system and a discharging system are arranged behind the following trimming cutting device, and the rear matched power system provides electric power and hydraulic power for the self-walking circular section cutting device, the following trimming cutting device, the anchoring system and the discharging system.
Description
Technical Field
The invention belongs to the technical field of coal mine tunneling equipment, and particularly relates to a coal mine arch-shaped section cutting system.
Background
Along with the development of integration and integration of underground fully-mechanized excavation equipment of a coal mine, the full-face heading machine is applied more and more. However, the section of the forming tunnel of the existing full-section tunneling system is circular, the section of the tunnel required under the coal mine is arched, and the tunnel constructed by the full-section tunneling system needs to be backfilled into the arch to meet the use requirement of the coal mine, so that the construction period of the project is prolonged, and the economical efficiency is reduced.
Disclosure of Invention
The invention provides an arched section cutting system for a coal mine, which aims to solve the problem that the use requirement of the coal mine can be met only by backfilling all the constructed roadways of a full-section tunneling system into an arch.
The invention adopts the following technical scheme: a coal mine arch-shaped section cutting system comprises a self-walking circular section cutting device, a following type trimming cutting device, an anchoring system, a rear matched power system and a discharging system, wherein the self-walking circular section cutting device is arranged at the foremost end to cut a tunnel with a circular section, the following type trimming cutting device is arranged behind the self-walking circular section cutting device, the following type trimming cutting device and the self-walking circular section cutting device automatically control the distance between the self-walking circular section cutting device and the following type trimming cutting device through a distance control system, the following type trimming cutting device repairs the tunnel with the circular section into an arch-shaped section tunnel, and the following type trimming cutting device is integrated with the anchoring system and is responsible for completing the supporting process of the tunnel; and a rear matched power system and a discharging system are arranged behind the following trimming cutting device, and the rear matched power system provides electric power and hydraulic power for the self-walking circular section cutting device, the following trimming cutting device, the anchoring system and the discharging system.
Further, from circular section cutting device of walking including circular blade dish cutting device, preceding shield, thrust cylinder, running gear, braced system and temporary support, braced system installs at running gear, and the braced system top sets up temporary support, and the braced system front end is articulated fixed with a plurality of groups thrust cylinder's one end, and thrust cylinder's the other end is fixed with preceding shield, and preceding shield front side is provided with circular blade dish cutting device.
Further, the following type trimming and cutting device comprises a walking jumbolter, the front end of the walking jumbolter is provided with a cutting mechanism, the cutting mechanism comprises a longitudinal shaft type cutting head, a gear box, a swing mechanism, a sliding frame and a cutting motor, the longitudinal shaft type cutting head is respectively arranged at two ends of the gear box and is connected with a planetary reducer in the gear box, the middle part of the gear box is connected with one side of the swing mechanism, the other side of the swing mechanism is fixed on a support frame, the support frame is arranged on a guide rail body of the sliding frame, the cutting machine can slide along the guide rail body, the support frame is hinged to one end of the telescopic oil cylinder, the other end of the telescopic oil cylinder is hinged to the end portion of the sliding frame, the outer cylinder of the cutting motor is connected with the support frame, and the output shaft of the cutting motor is connected with the gear box through the coupler and the transmission shaft, so that the cutting motor drives the two longitudinal axis type cutting heads to rotate.
Furthermore, the internal transmission mechanism of the slewing mechanism adopts a gear rack form or a worm and gear form, and the power unit adopts a hydraulic motor or an oil cylinder.
Furthermore, the rotating directions of the two longitudinal shaft type cutting heads are opposite when the two longitudinal shaft type cutting heads work.
Compared with the prior art, the existing tunneling equipment for tunneling a working face mainly comprises a cantilever type tunneling machine, a continuous mining machine and an anchor driving machine. The cantilever type development machine adopts a longitudinal shaft or a transverse shaft type cutting head, the cutting capability is strong, the single cutting head operation and the frequent adjustment of equipment charging are adopted, and the cutting efficiency is low; the continuous mining machine and the tunneling and anchoring machine both adopt cutting drums with the same width as a cutting roadway to cut, the full width is cut once, the cutting efficiency is high, but the continuous mining machine and the tunneling and anchoring machine are only suitable for a coal roadway, when a half-coal-rock roadway is cut, the problems of low efficiency, high failure rate and the like exist, and the adaptability is poor. The self-walking round section cutting device and the following type trimming cutting device can realize one-step forming of the arched section rock roadway of the coal mine, and have the advantages of strong rock breaking capacity, high efficiency and wide application prospect.
Drawings
FIG. 1 is a schematic structural diagram of a coal mine arch section cutting system according to the present invention;
FIG. 2 is a top view of the coal mine arch cross-section cutting system of the present invention;
FIG. 3 is a front view of the self-propelled round-section cutting device;
FIG. 4 is a schematic structural view of a self-propelled round-section cutting device;
FIG. 5 is a top view of the self-propelled round section cutting device;
FIG. 6 is a structure of a cutting mechanism in the following type trimming and cutting device;
FIG. 7 is an axial side view of a sliding frame of the following trimming and cutting apparatus;
FIG. 8 is a schematic view of a circular cross-section modified into an arcuate cross-section;
in the figure, 1-self-walking round section cutting device, 2-following type trimming cutting device, 3-anchoring system, 4-rear matching power system, 5-discharging system, 6-round cutterhead cutting device, 7-front shield, 8-propulsion oil cylinder, 9-walking mechanism and 10-supporting system.
Detailed Description
As shown in fig. 1-2, a coal mine arch-shaped section cutting system comprises a self-walking circular section cutting device 1, a following type trimming cutting device 2, an anchoring and protecting system 3, a rear matched power system 4 and a discharging system 5, wherein the self-walking circular section cutting device 1 is arranged at the foremost end to cut a tunnel with a circular section, the following type trimming cutting device 2 is arranged behind the self-walking circular section cutting device 1, the following type trimming cutting device 2 and the self-walking circular section cutting device 1 automatically control the distance between the self-walking circular section cutting device and the following type trimming cutting device through a distance control system, the following type trimming cutting device 2 trims the tunnel with the circular section into an arch-shaped section, and the following type trimming cutting device 2 is integrated with the anchoring and protecting system 3 and is responsible for completing the supporting process of the tunnel; a rear matched power system 4 and a discharging system 5 are arranged behind the following type trimming cutting device 2, and the rear matched power system 4 provides electric power and hydraulic power for the self-walking circular section cutting device 1, the following type trimming cutting device 2, the anchoring system 3 and the discharging system 5.
According to the invention, a self-walking circular section cutting device 1 is responsible for cutting a roadway with a circular section at the foremost end of the system, a following type trimming cutting device 2 is arranged behind the self-walking circular section cutting device 1, the distance between the following type trimming cutting device 2 and the self-walking circular section cutting device 1 is automatically controlled through a distance control system, the following type trimming cutting device 2 is responsible for trimming the roadway with the circular section into an arched section roadway, an anchoring and protecting system 3 is integrated on the following type trimming cutting device 2 and is responsible for completing the supporting process of the roadway, a rear matched power system 4 provides electric power and hydraulic power for the self-walking circular section cutting device 1, the following type trimming cutting device 2, the anchoring and protecting system 3 and a discharging system 5, and the discharging system 5 is responsible for transferring cut materials.
As shown in fig. 3-5, the self-walking circular section cutting device 1 comprises a circular cutterhead cutting device 6, a front shield 7, a propulsion cylinder 8, a walking mechanism 9, a supporting system 10 and a temporary support 11, wherein the supporting system 10 is installed on the walking mechanism 9, the temporary support 11 is arranged above the supporting system 10, the front end of the supporting system 10 is hinged and fixed with one end of a plurality of groups of propulsion cylinders 8, the other end of the propulsion cylinder 8 is fixed with the front shield 7, and the circular cutterhead cutting device 6 is arranged on the front side of the front shield 7.
As shown in fig. 6 and 7, the following trimming and cutting device 2 includes a walking jumbolter, a cutting mechanism is installed at the front end of the walking jumbolter, the cutting mechanism includes a longitudinal axis type cutting head 2.1, a gear box 2.2, a swing mechanism 2.3, a sliding frame 2.4 and a cutting motor 2.6, the longitudinal axis type cutting head 2.1 is installed at two ends of the gear box 2.2, the longitudinal axis type cutting head 2.1 is connected with a planetary reducer in the gear box 2.2, the middle part of the gear box 2.2 is connected with one side of the swing mechanism 2.3, the other side of the swing mechanism 2.3 is fixed on a support frame 2.7, the support frame 2.7 is installed on a guide rail 2.8 of the sliding frame 2.4 and can slide along the guide rail 2.8, the support frame 2.7 is hinged with one end of a telescopic cylinder 2.5, the other end of the telescopic cylinder 2.5 is hinged with the end of the sliding frame 2.4, the cutting motor 2.6 outer cylinder is connected with the support frame 2.7, and the cutting motor 2.6 is connected with the output shaft through a shaft coupling, The transmission shaft is connected with the gear box 2.2, so that the cutting motor 2.6 drives the two longitudinal shaft type cutting heads 2.1 to rotate.
The internal transmission mechanism of the swing mechanism 2.3 adopts a gear rack form or a worm gear form, and the power unit adopts a hydraulic motor or an oil cylinder. The two longitudinal axis cutting heads 2.1 are operated in opposite directions.
Adopt from walking circle section cutting means shaping tunnel to be circular, often need withdraw and adopt the mode of backfilling again to modify into the arch tunnel with circular tunnel after the full-face entry driving machine, in order to realize once forming the arch section, along with formula deburring cutting means 2 tightly with from walking circle section cutting means 1, the place ahead full-face entry driving machine is used for cutting circular section, the novel cutting mechanism at rear is used for cutting circular section and becomes the arch section.
As shown in fig. 8, the solid line circle represents the cutting section of the full-face heading machine, the cutting radius is R, the lower dotted line part is an arch section which follows the rear part of the full-face heading machine and is cut and trimmed by a novel cutting mechanism, wherein the width of the arch section is L, L =2R, the wall height of the arch section is H, the full height of the arch section is H + R, the area a is a left-side closed figure consisting of the circular section and the arch section, and the area is S1(ii) a The area B is a right closed figure consisting of a circular section and an arched section, has the same area as the area A and is also equal to the area S1(ii) a The area A and the area B represent the parts needing to be cut by the novel rear cutting mechanism, the area C is a closed figure at the bottom consisting of a circular section and an arched section, and the area is S2Represents a site to be filled, when S2=2S1When the novel cutting mechanism at the rear cuts the material at the left side and the right side under the premise of cutting a certain distance, the volume of the material cut off is equal to the volume needing to be filled at the bottom of the circular tunnel, so that the transportation of redundant materials is not needed, and the subsequent filling is also not needed, so that the original circular tunnel is changed into an arched tunnel.
The specific cutting process comprises the following steps:
s100: the cutting motor 2.6 starts to work, the gear box 2.2 is driven to rotate through the action of the rotary mechanism 2.3, so that the projection circle center of one longitudinal axis type cutting head 2.1 on the circular section is equal to the circle center height of the circular section, and meanwhile, the left (or right) longitudinal axis type cutting head 2.1 is driven to be tightly attached to the leftmost (or rightmost) side of the circular section through the telescopic action of the two telescopic oil cylinders 2.5;
s200: keeping the cutting motor 2.6 working, driving the gear box 2.2 to slowly rotate anticlockwise or clockwise by the action of the rotary mechanism 2.3, and simultaneously, along with the reciprocating action of the telescopic oil cylinder 2.5, enabling the original uppermost vertical shaft type cutting head 2.1 to cut downwards, when the vertical shaft type cutting head 2.1 reaches the bottom plate of an ideal arched section, then cutting the vertical shaft type cutting head 2.1 rightwards (or leftwards) along the bottom plate of the ideal arched section, cutting off all materials in the area A (or the area B), and simultaneously throwing the cut-off materials to the area C along the rotating direction of the cutting head;
s300: keeping the cutting motor 2.6 working, two telescopic oil cylinders 2.5 pushing the support frame 2.7 to move rightwards (or leftwards) along the guide rail body 2.8, and simultaneously the rotary mechanism 2.3 driving the gear box 2.2 to rotate, so that the projection circle center of the longitudinal shaft type cutting head 2.1 at the upper end of the roadway on the circular section is equal to the circle center height of the circular section and is tightly attached to the rightmost side (or leftmost side) of the circular section;
s400: keeping the cutting motor 2.6 working, driving the gear box 2.2 to slowly rotate anticlockwise or clockwise by the action of the rotary mechanism 2.3, and simultaneously accompanying the reciprocating action of the telescopic oil cylinder 2.5, so that the original uppermost vertical shaft type cutting head 2.1 cuts downwards, when the vertical shaft type cutting head 2.1 reaches the bottom plate with an ideal arched section, then cutting the vertical shaft type cutting head 2.1 leftwards (or rightwards) along the bottom plate with the ideal arched section, cutting off all materials in the B area (or the A area), and simultaneously throwing the cut-off materials to the C area along the rotating direction of the cutting head, and after a cutting cycle is completed, moving the equipment forwards for a certain distance;
s500: and (5) repeating the step 1 to the step 4 to finish the cutting of the circular section and the modification of the circular section into the arched section.
By adopting the novel cutting mechanism and the arched section forming method thereof, the original round tunnel is cut and modified into the arched tunnel, a feasible scheme is provided for the application of the full-section tunneling machine in a coal mine, the novel cutting mechanism and the arched section forming method thereof are adopted, so that the full-section tunneling machine system can be excavated once into the arched section, and compared with the traditional mode of firstly excavating into the round section and then subsequently backfilling the tunnel, the novel arched section forming method not only improves the tunneling efficiency, but also reduces the tunnel construction cost.
Claims (5)
1. The utility model provides a colliery arch section cutting system which characterized in that: the device comprises a self-walking round section cutting device (1), a following type trimming cutting device (2), an anchoring system (3), a rear matched power system (4) and a discharging system (5), wherein the self-walking round section cutting device (1) is arranged at the foremost end to cut a round section roadway, the following type trimming cutting device (2) is arranged behind the self-walking round section cutting device (1), the following type trimming cutting device (2) and the self-walking round section cutting device (1) automatically control the distance between the self-walking round section cutting device and the following type trimming cutting device through a distance control system, the following type trimming cutting device (2) trims the round section roadway into an arched section roadway, and the following type trimming cutting device (2) is integrated with the anchoring system (3) and is responsible for completing the supporting process of the roadway; a rear matched power system (4) and a discharging system (5) are arranged behind the following trimming cutting device (2), and the rear matched power system (4) provides electric power and hydraulic power for the self-walking circular section cutting device (1), the following trimming cutting device (2), the anchoring system (3) and the discharging system (5).
2. The coal mine arch face cutting system of claim 1, wherein: from circular section cutting device (1) of walking including circular blade disc cutting device (6), preceding shield (7), thrust cylinder (8), running gear (9), braced system (10) and temporary support (11), braced system (10) are installed at running gear (9), braced system (10) top sets up temporary support (11), braced system (10) front end is articulated fixed with the one end of a plurality of groups thrust cylinder (8), the other end and preceding shield (7) of thrust cylinder (8) are fixed, preceding shield (7) front side is provided with circular blade disc cutting device (6).
3. The coal mine arch face cutting system of claim 1, wherein: the following type trimming cutting device (2) comprises a walking jumbolter, a cutting mechanism is arranged at the front end of the walking jumbolter, the cutting mechanism comprises a longitudinal shaft type cutting head (2.1), a gear box (2.2), a swing mechanism (2.3), a sliding frame (2.4) and a cutting motor (2.6), the longitudinal shaft type cutting head (2.1) is respectively arranged at two ends of the gear box (2.2), the longitudinal shaft type cutting head (2.1) is connected with a planetary reducer in the gear box (2.2), the middle part of the gear box (2.2) is connected with one side of the swing mechanism (2.3), the other side of the swing mechanism (2.3) is fixed on a support frame (2.7), the support frame (2.7) is arranged on a guide rail body (2.8) of the sliding frame (2.4) and can slide along the guide rail body (2.8), the support frame (2.7) is hinged with one end of a telescopic oil cylinder (2.5), and the other end of the telescopic oil cylinder (2.5) is connected with the end of the sliding frame (2.4), the outer cylinder of the cutting motor (2.6) is connected with the support frame (2.7), and the output shaft of the cutting motor (2.6) is connected with the gear box (2.2) through a coupler and a transmission shaft, so that the cutting motor (2.6) drives the two longitudinal shaft type cutting heads (2.1) to rotate.
4. The coal mine arch face cutting system of claim 2, wherein: the internal transmission mechanism of the swing mechanism (2.3) adopts a gear rack form or a worm gear form, and the power unit adopts a hydraulic motor or an oil cylinder.
5. The coal mine arch face cutting system of claim 2, wherein: the two longitudinal axis cutting heads (2.1) rotate in opposite directions when working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111343365.0A CN114165250B (en) | 2021-11-13 | 2021-11-13 | Arch section cutting system for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111343365.0A CN114165250B (en) | 2021-11-13 | 2021-11-13 | Arch section cutting system for coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114165250A true CN114165250A (en) | 2022-03-11 |
| CN114165250B CN114165250B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111343365.0A Active CN114165250B (en) | 2021-11-13 | 2021-11-13 | Arch section cutting system for coal mine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291385A (en) * | 1999-02-02 | 2000-10-17 | Nakaguro Kensetsu Kk | Excavator |
| JP2001049985A (en) * | 1999-08-10 | 2001-02-20 | Penta Ocean Constr Co Ltd | Shield machine |
| CN102606154A (en) * | 2012-04-06 | 2012-07-25 | 中铁隧道装备制造有限公司 | Coal roadway tunneling machine with double round cutter heads |
| CN102808617A (en) * | 2012-08-28 | 2012-12-05 | 马晓山 | Comprehensive mechanical stone drift digging anchor machine |
| KR20140100877A (en) * | 2013-11-07 | 2014-08-18 | 석정건설(주) | Method for excavating rock tunnel |
| CN109915152A (en) * | 2019-04-16 | 2019-06-21 | 燕山大学 | A kind of collection bores the shield type excavator of expansion support integratedization |
| CN111485900A (en) * | 2019-01-29 | 2020-08-04 | 欧玉金 | Rock tunnel boring machine |
| CN111779480A (en) * | 2020-07-31 | 2020-10-16 | 辽宁工程技术大学 | Short-body tunneling robot and using method thereof |
-
2021
- 2021-11-13 CN CN202111343365.0A patent/CN114165250B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291385A (en) * | 1999-02-02 | 2000-10-17 | Nakaguro Kensetsu Kk | Excavator |
| JP2001049985A (en) * | 1999-08-10 | 2001-02-20 | Penta Ocean Constr Co Ltd | Shield machine |
| CN102606154A (en) * | 2012-04-06 | 2012-07-25 | 中铁隧道装备制造有限公司 | Coal roadway tunneling machine with double round cutter heads |
| CN102808617A (en) * | 2012-08-28 | 2012-12-05 | 马晓山 | Comprehensive mechanical stone drift digging anchor machine |
| KR20140100877A (en) * | 2013-11-07 | 2014-08-18 | 석정건설(주) | Method for excavating rock tunnel |
| CN111485900A (en) * | 2019-01-29 | 2020-08-04 | 欧玉金 | Rock tunnel boring machine |
| CN109915152A (en) * | 2019-04-16 | 2019-06-21 | 燕山大学 | A kind of collection bores the shield type excavator of expansion support integratedization |
| CN111779480A (en) * | 2020-07-31 | 2020-10-16 | 辽宁工程技术大学 | Short-body tunneling robot and using method thereof |
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| Publication number | Publication date |
|---|---|
| CN114165250B (en) | 2024-01-26 |
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