CN114635640A - Five-arm anchor rod drill carriage for coal mine - Google Patents
Five-arm anchor rod drill carriage for coal mine Download PDFInfo
- Publication number
- CN114635640A CN114635640A CN202011480454.5A CN202011480454A CN114635640A CN 114635640 A CN114635640 A CN 114635640A CN 202011480454 A CN202011480454 A CN 202011480454A CN 114635640 A CN114635640 A CN 114635640A
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- anchor
- arm
- support
- assembly
- platform
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- 239000003245 coal Substances 0.000 title claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000005641 tunneling Effects 0.000 description 12
- 238000004873 anchoring Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/025—Rock drills, i.e. jumbo drills
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a five-arm anchor rod drill carriage for coal mines, which comprises: the walking mechanism is connected with the rotary bottom platform through a first rotary drive and is positioned below the rotary bottom platform; a push-out platform is arranged on one side of the top surface of the rotary bottom platform along the length direction in a sliding manner, a shear shank assembly is mounted on the push-out platform, and a top anchor bearing assembly is connected to the upper part of the shear shank assembly; the anchor side drill arm assemblies are divided into two groups and symmetrically arranged at two ends of the other side of the top surface of the rotary bottom platform along the length direction; the power assembly is arranged on the rotary bottom platform and positioned between the two groups of the upper anchor drilling arm assemblies and is used for providing power support for respective actions of the first rotary driving mechanism, the travelling mechanism, the shear shank assembly, the top anchor bearing assembly and the upper anchor drilling arm assembly. The five-arm anchor rod drill carriage for the coal mine is compact in structural design and high in operation efficiency, and the safety and the supporting safety performance of operators are greatly improved.
Description
Technical Field
The invention relates to the technical field of underground coal mine roadway equipment, in particular to a five-arm anchor rod drill carriage for a coal mine.
Background
Along with the rapid development of economy in China, the demand on energy, particularly coal, is increasing, and the mining quantity of domestic coal is also gradually increased. While coal production has increased year by year, safety work in coal mines is becoming more and more important, and many of the original operating modes are facing the challenges of advanced technology. At present, in a plurality of coal mine tunneling working faces, the tunneling machine is widely applied, the tunneling speed is greatly improved compared with the prior art, but on the premise of coal mine safety production, the tunneling machine needs to carry out bolting operation on a top plate and a side wall every time one cut of coal is made. The mode that roof anchor and side wall anchor separately go on is used except that manpower anchor is strutted in many collieries now, and roof is strutted and is used one set of equipment, and the side wall is strutted and is used artifical or simple anchor equipment, and not only inefficiency wastes a large amount of manpower and material resources moreover, and the effect is still not good.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of this, the invention needs to provide a five-arm anchor rod drill carriage for coal mines, which has a compact structural design and high operation efficiency, and greatly improves the safety of operators and the safety performance of support.
The invention provides a five-arm anchor rod drill carriage for coal mines, which comprises: the anchor support device comprises a rotary bottom platform, a travelling mechanism, a top anchor bearing assembly, an anchor support drill arm assembly and a power assembly, wherein the travelling mechanism is connected with the rotary bottom platform through a first rotary drive and is positioned below the rotary bottom platform; a push-out platform is slidably arranged on one side of the top surface of the rotary bottom platform along the length direction, a shear shank assembly is mounted on the push-out platform, and the upper part of the shear shank assembly is connected with the top anchor bearing assembly; the anchor side drilling arm assemblies are divided into two groups and symmetrically arranged at two ends of the other side of the top surface of the rotary bottom platform along the length direction; the power assembly is arranged on the rotary bottom platform and between the two groups of side anchor drilling arm assemblies and is used for providing power support for the respective actions of the first rotary drive, the walking mechanism, the scissor frame assembly, the top anchor bearing assembly and the side anchor drilling arm assemblies.
According to one embodiment of the invention, a plurality of push-out guide rails are arranged between the push-out platform and the rotary bottom platform, a plurality of push-out oil cylinders are arranged on the rotary bottom platform, the top ends of the push-out oil cylinders are connected with the push-out platform to drive the push-out platform to move on the push-out guide rails, and the push-out guide rails are arranged along the width extension direction of the rotary bottom platform.
According to one embodiment of the invention, the scissor frame assembly comprises a scissor frame lifting mechanism and a lift cylinder for pushing the scissor frame lifting mechanism to move up and down.
According to one embodiment of the invention, the roof anchor bearing assembly comprises a roof anchor bearing frame body, bearing guide rails arranged on the inner side of the roof anchor bearing frame body, a moving oil cylinder, a plurality of sliding frames and roof anchor drill arms, wherein the roof anchor bearing frame body is arranged at the top end of the scissor frame lifting mechanism, the bearing guide rails are uniformly distributed along the horizontal direction, each bearing guide rail is provided with one sliding frame in a sliding manner and driven by the moving oil cylinder to move, and each sliding frame is provided with one roof anchor drill arm.
According to one embodiment of the invention, the anchor side drilling arm assembly comprises a first anchor side drilling frame, a second anchor side drilling frame and an anchor side drilling arm, the first anchor side drilling frame is fixed on the rotary bottom platform through a second rotary drive, the second anchor side drilling frame is connected to the first anchor side drilling frame through a third rotary drive, and the anchor side drilling arm is arranged on the second anchor side drilling frame.
According to one embodiment of the invention, the power assembly comprises an electric drive unit for the bolting rig to provide the required electric support, a hydraulic station for the bolting rig to provide the required hydraulic pressure source, and a magnetic actuator connected to a power motor in the bolting rig.
According to one embodiment of the invention, two temporary support assemblies are oppositely arranged on the top anchor bearing frame body.
According to one embodiment of the invention, the temporary support assembly comprises a support rod, a support oil cylinder and a support plate, wherein the bottom end of the support rod is hinged with the top anchor bearing frame body, the bottom end of the support oil cylinder is hinged with the top anchor bearing frame body, the top end of the support oil cylinder is hinged with the support rod, and the support plate is hinged with the top end of the support rod.
According to one embodiment of the invention, two symmetrically arranged supporting legs are arranged below the push-out platform, and supporting leg oil cylinders are arranged between the supporting legs and the push-out platform.
According to one embodiment of the invention, the running mechanism is a hydraulic motor crawler type.
The five-arm anchor rod drill carriage for the coal mine integrates the roof support and the side wall support, can finish the anchoring support of the roof and the side wall of the roadway at one time after the tunneling machine finishes tunneling, effectively saves labor, greatly improves the operation efficiency of the roadway support, greatly improves the daily footage number of the roadway tunneling operation, adopts a wireless remote control mode for control, greatly improves the safety of operators and the support safety performance, and has compact structural design and high operation efficiency.
Drawings
Fig. 1 is a perspective view of a five arm roof bolting rig for coal mines according to the present invention.
Fig. 2 is a front view of a five-armed rock bolt rig for coal mines according to the invention.
Fig. 3 is a left side view of a five arm roof bolting rig for coal mines according to the present invention.
Fig. 4 is a schematic view of the structure of fig. 3 viewed in the direction a-a.
Fig. 5 is a top view of a five arm roof bolting rig for coal mines according to the present invention.
Fig. 6 is a schematic view of the structure of fig. 5 viewed in the direction B-B.
Reference numerals are as follows: 1-a rotary bottom platform; 2-a traveling mechanism; 3-a roof bolt bearing assembly; 4-anchor drilling arm assembly; 5-a power assembly; 6-first swing drive; 7-pushing out the platform; 8-a scissor carriage assembly; 9-temporary support assembly; 10-a wireless remote control receiver; 31-top anchor bearing frame body; 32-a carrier rail; 33-moving the oil cylinder; 34-a carriage; 35-roof bolting boom; 41-first anchor drilling frame; 42-a second anchor drilling frame; 43-anchor drilling arm; 44-a second swing drive; 45-third swing drive; 51-an electric drive unit; 52-a hydraulic station; 53-magnetic actuator; 71-a push-out guide rail; 72-push-out oil cylinder; 73-leg support; 74-support oil cylinder; 81-scissor lift mechanism; 91-supporting rods; 92-supporting oil cylinders; 93-supporting plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 6, a five-armed bolting jumbo for coal mines includes: the device comprises a rotary bottom platform 1, a walking mechanism 2, a top anchor bearing assembly 3, an upper anchor drilling arm assembly 4 and a power assembly 5, wherein the walking mechanism 2 is connected with the rotary bottom platform 1 through a first rotary drive 6 and is positioned below the rotary bottom platform 1; a push-out platform 7 is slidably arranged on one side of the top surface of the rotary bottom platform 1 along the length direction, a shear shank assembly 8 is arranged on the push-out platform 7, and the upper part of the shear shank assembly 8 is connected with a top anchor bearing assembly 3 for top anchor supporting and anchoring operation; the group of the side anchor drilling arm assemblies 4 are symmetrically arranged at two ends of the other side of the top surface of the rotary bottom platform 1 along the length direction, and the side anchor drilling arm assemblies 4 can be used for side support anchoring operation; the power assembly 5 is arranged on the rotary bottom platform 1 and between the two groups of upper anchor drilling arm assemblies 4 and is used for providing power support for the respective actions of the first rotary drive 6, the walking mechanism 2, the shear shank assembly 8, the top anchor bearing assembly 3 and the upper anchor drilling arm assemblies 4.
The five-arm anchor rod drill carriage for the coal mine integrates the roof support and the side wall support, can finish the anchoring support of the roof and the side wall of the roadway at one time after the tunneling machine finishes tunneling, effectively saves labor, greatly improves the operation efficiency of the roadway support, greatly improves the daily footage number of the roadway tunneling operation, adopts a wireless remote control mode for control, greatly improves the safety of operators and the support safety performance, and has compact structural design and high operation efficiency.
As shown in fig. 1 to 4, a plurality of push-out guide rails 71 are arranged between the push-out platform 7 and the rotary bottom platform 1, a plurality of push-out oil cylinders 72 are arranged on the rotary bottom platform 1, the top ends of the push-out oil cylinders 72 are connected with the push-out platform 7 to drive the push-out platform 7 to move on the push-out guide rails 71, wherein the push-out guide rails 71 are arranged along the width extension direction of the rotary bottom platform 1, two symmetrically arranged support legs 73 are arranged below the push-out platform 7, a support leg oil cylinder 74 is arranged between the support legs 73 and the push-out platform 7, the push-out platform 7 is driven to extend out along the side direction of the anchor rod drilling rig through the push-out oil cylinders 72, and then the extension support legs 73 support the push-out platform 7 to complete a primary support process.
As shown in fig. 1, 2 and 4, the scissor frame assembly 8 includes a scissor frame lift mechanism 81 and a lift cylinder (not shown) for pushing the scissor frame lift mechanism 81 up and down, and the lift cylinder pushes the scissor frame lift mechanism 81 upward to raise the scissor frame lift mechanism 81, so that the bolt carrier assembly 3 is raised to a predetermined working height.
As shown in fig. 1 to 4, the roof anchor carrying assembly 3 includes a roof anchor carrying frame 31, a carrying rail 32 disposed inside the roof anchor carrying frame 31, a moving cylinder 33, a carriage 34 and a roof anchor drill arm 35, the roof anchor carrying frame 31 is disposed on the top of the scissor rack lifting mechanism 81, the carrying rail 32 is a plurality of rails and is uniformly arranged along the horizontal direction, each carrying rail 32 is slidably provided with a carriage 34 and is driven by the moving cylinder 33, each carriage 34 is provided with a roof anchor drill arm 35, wherein it should be understood that the roof anchor drill arm 35 is driven by a hydraulic cylinder driving chain in the prior art to move up and down, when the scissor rack lifting mechanism 81 is lifted to a predetermined working height, the anchoring work of the roof anchor drill arm 35 can be started, while the number of the roof anchor drill arms 35 in the five-arm rock-bolter truck of the present invention is three, and the relative distance between two adjacent roof anchor drill arms 35 can be effectively controlled by the moving cylinder 33 driving the carriage 34, thereby quickly and stably completing the anchoring work at the designated position.
As shown in fig. 1 and fig. 5, the anchor drilling boom assembly 4 includes a first anchor drilling boom 41, a second anchor drilling boom 42 and an anchor drilling boom 43, the first anchor drilling boom 41 is fixed on the rotary bottom platform 1 through a second rotary drive 44, the second anchor drilling boom 42 is connected to the first anchor drilling boom 41 through a third rotary drive 45, and the anchor drilling boom 43 is arranged on the second anchor drilling boom 42, it should be understood that the hydraulic cylinder in the prior art is used in the first anchor drilling boom 41 to drive the chain to drive the second anchor drilling boom 42 to move up and down, and similarly, the hydraulic cylinder in the prior art is used in the second anchor drilling boom 42 to drive the chain to drive the anchor drilling boom 43 to move up and down, wherein the hydraulic cylinder has a hydraulic station to provide hydraulic power and drive the chain to move, the specific structure of which is not described herein again, the second rotary drive 44 is used to facilitate the control of the rotation angle of the first anchor drilling boom 41, and the third rotary drive 45 is used for facilitating the control of the rotation angle of the anchor drilling arm 43.
As shown in fig. 1, 5 and 6, the power assembly 5 includes an electric drive unit 51, a hydraulic station 52 and a magnetic actuator 53, the electric drive unit 51 is used for providing required electric support for the bolting drill rig, the hydraulic station 52 is used for providing required hydraulic pressure source in the bolting drill rig, namely, the hydraulic station 52 provides hydraulic power source for various cylinders in the bolting drill rig, and the magnetic actuator 53 is connected with a power motor in the bolting drill rig, wherein the power motor provides power source for all parts of the bolting drill rig to move.
As shown in fig. 1 to 4, two temporary support assemblies 9 arranged oppositely are arranged on the roof anchor carrier 31, wherein each temporary support assembly 9 includes a support rod 91, a support cylinder 92 and a support plate 93, the bottom end of the support rod 91 is hinged to the roof anchor carrier 31, the bottom end of the support cylinder 92 is hinged to the roof anchor carrier 31, the top end of the support cylinder 92 is hinged to the support rod 91, the support plate 93 is hinged to the top end of the support rod 91, and when the roof anchor carrier 31 is raised to a predetermined working height, the support cylinder 92 is pushed out to enable the support plate 93 to support the roadway roof.
As shown in fig. 1, be equipped with the wireless remote control system who is used for controlling running gear 2 motion on gyration bottom platform 1, wherein this wireless remote control system adopt among the prior art remote control mode can, be equipped with wireless remote control receiver 10 on gyration bottom platform 1 simultaneously, it needs to understand, wireless remote control receiver 10 uses with the cooperation of remote control transmitter, can carry out long-range effective operation to the walking action of stock drill carriage, wireless remote control transmitter possesses manual and remote control two kinds of modes simultaneously, with accuracy and the security of effectively improving the stock drill carriage operation, and effectively promote operator's factor of safety.
As shown in fig. 1 to 6, the traveling mechanism 2 is a hydraulic motor crawler traveling system, the crawler is driven by a low-speed high-torque hydraulic motor, and the driving process is smooth and easy to control.
As shown in fig. 1 to 6, the five-arm rock-bolt drill carriage for coal mines according to the present invention has the following operation processes:
during operation, the heading machine retreats, the traveling mechanism 2 is driven by the wireless remote control system to travel between the front part of the heading machine and a coal wall, the rotary bottom platform 1 rotates ninety degrees through the first rotary drive 6, the top anchor bearing frame body 31 is parallel to the coal wall of a working face, the push-out platform 7 is driven to extend out by the push-out air cylinder 72, then the push-out platform 7 is supported by the extending supporting legs 73, then the shear frame lifting mechanism 81 is driven to lift the top anchor bearing frame body 31 to a preset working height, the supporting oil cylinder 92 is driven to lift the supporting plate 93 in the temporary supporting assembly 9 to be supported against a roadway top plate, the transverse position of the top anchor drill arm 35 is adjusted by driving the moving oil cylinder 33, and after the drilling position of the top anchor drill arm 35 is determined, the top anchor drill arm 35 can be operated to perform anchoring operation;
during anchor jacking operation, the operation of the anchor side drilling arms 43 can be simultaneously carried out, at the moment, the first anchor side drilling frame 41 is rotated by ninety degrees through the second rotary drive 44, the anchor side drilling arms 43 are unfolded, then the anchor side drilling arms 43 are rotated by ninety degrees through the third rotary drive 45 and are perpendicular to the side wall of the roadway, and the height of the anchor side drilling arms 43 is adjusted through the first anchor side drilling frame 41 and the second anchor side drilling frame 42;
and when the anchoring operation is finished, adjusting each mechanism to an initial position according to the reverse steps, then retreating to the rear part of the tunneling machine, and continuing the next cycle of coal cutting operation of the tunneling machine.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a five arm stock drill carriages for coal mine which characterized in that includes: the anchor rod supporting device comprises a rotary bottom platform, a travelling mechanism, a top anchor bearing assembly, an upper anchor drilling arm assembly and a power assembly, wherein the travelling mechanism is connected with the rotary bottom platform through a first rotary drive and is positioned below the rotary bottom platform; a push-out platform is slidably arranged on one side of the top surface of the rotary bottom platform along the length direction, a shear shank assembly is mounted on the push-out platform, and the upper part of the shear shank assembly is connected with the top anchor bearing assembly; the anchor side drilling arm assemblies are divided into two groups and symmetrically arranged at two ends of the other side of the top surface of the rotary bottom platform along the length direction; the power assembly is arranged on the rotary bottom platform and between the two groups of side anchor drilling arm assemblies and is used for providing power support for the respective actions of the first rotary drive, the walking mechanism, the scissor frame assembly, the top anchor bearing assembly and the side anchor drilling arm assemblies.
2. The five-arm anchor rod drill carriage for the coal mine according to claim 1, characterized in that a plurality of pushing guide rails are arranged between the pushing platform and the rotary bottom platform, a plurality of pushing oil cylinders are arranged on the rotary bottom platform, the top ends of the pushing oil cylinders are connected with the pushing platform to drive the pushing platform to move on the pushing guide rails, and the pushing guide rails are arranged along the width extending direction of the rotary bottom platform.
3. The coal mine five-arm anchor rod drill carriage according to claim 1, wherein the scissor frame assembly comprises a scissor frame lifting mechanism and a lifting cylinder for pushing the scissor frame lifting mechanism to move up and down.
4. The five-arm anchor rod drill carriage for the coal mine according to claim 3, wherein the roof anchor bearing assembly comprises a roof anchor bearing frame body, bearing guide rails arranged on the inner side of the roof anchor bearing frame body, a movable oil cylinder, a sliding frame and a roof anchor drill arm, the roof anchor bearing frame body is arranged at the top end of the scissor frame lifting mechanism, the bearing guide rails are arranged uniformly along the horizontal direction, one sliding frame is arranged on each bearing guide rail in a sliding mode and driven by the movable oil cylinder to move, and one roof anchor drill arm is arranged on each sliding frame.
5. The five-arm anchor rod drill carriage for the coal mine according to claim 1, wherein the anchor rod drill boom assembly comprises a first anchor rod drill boom, a second anchor rod drill boom and an anchor rod drill boom, the first anchor rod drill boom is fixed on the rotary bottom platform through a second rotary drive, the second anchor rod drill boom is connected to the first anchor rod drill boom through a third rotary drive, and the anchor rod drill boom is arranged on the second anchor rod drill boom.
6. The five-armed coal mine bolting rig according to claim 1, wherein said power assembly comprises an electric drive unit for providing required electric support for the bolting rig, a hydraulic station for providing a required hydraulic pressure source in the bolting rig and a magnetic actuator connected to a power motor in the bolting rig.
7. The five-arm anchor rod drill carriage for the coal mine according to claim 4, wherein two temporary support assemblies which are oppositely arranged are arranged on the top anchor bearing frame body.
8. The five-arm anchor rod drill carriage for the coal mine according to claim 7, wherein the temporary support assembly comprises a support rod, a support oil cylinder and a support guard plate, the bottom end of the support rod is hinged to the top anchor bearing frame body, the bottom end of the support oil cylinder is hinged to the top anchor bearing frame body, the top end of the support oil cylinder is hinged to the support rod, and the support guard plate is hinged to the top end of the support rod.
9. The five-arm anchor rod drill carriage for the coal mine according to claim 1, wherein two symmetrically arranged supporting legs are arranged below the push-out platform, and supporting leg oil cylinders are arranged between the supporting legs and the push-out platform.
10. The five-armed jumbolter for coal mines as set forth in claim 1, wherein the traveling mechanism is a hydraulic motor crawler traveling manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480454.5A CN114635640A (en) | 2020-12-15 | 2020-12-15 | Five-arm anchor rod drill carriage for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480454.5A CN114635640A (en) | 2020-12-15 | 2020-12-15 | Five-arm anchor rod drill carriage for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635640A true CN114635640A (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480454.5A Pending CN114635640A (en) | 2020-12-15 | 2020-12-15 | Five-arm anchor rod drill carriage for coal mine |
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| Country | Link |
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| CN (1) | CN114635640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116085012A (en) * | 2022-12-28 | 2023-05-09 | 江苏中贵重工有限公司 | Ten-arm anchor rod drill carriage |
-
2020
- 2020-12-15 CN CN202011480454.5A patent/CN114635640A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116085012A (en) * | 2022-12-28 | 2023-05-09 | 江苏中贵重工有限公司 | Ten-arm anchor rod drill carriage |
| CN116085012B (en) * | 2022-12-28 | 2023-11-03 | 江苏中贵重工有限公司 | Ten-arm anchor rod drill carriage |
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