CN212642588U - Roof cutting drill carriage - Google Patents
Roof cutting drill carriage Download PDFInfo
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- CN212642588U CN212642588U CN202021538700.3U CN202021538700U CN212642588U CN 212642588 U CN212642588 U CN 212642588U CN 202021538700 U CN202021538700 U CN 202021538700U CN 212642588 U CN212642588 U CN 212642588U
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Abstract
The utility model provides a top-cutting drill carriage relates to excavating equipment technical field, the utility model provides a top-cutting drill carriage includes: the drilling machine comprises a walking chassis, a drilling arm mechanism and a top support stable vehicle mechanism, wherein the drilling arm mechanism is arranged on the walking chassis; the top supporting and vehicle stabilizing mechanism comprises a first telescopic driving piece and a supporting piece, the first telescopic driving piece is installed on the walking chassis and can extend out of the top of the roof cutting drill vehicle, and the supporting piece is installed at the driving end of the first telescopic driving piece. The utility model provides a greater technical problem of roof cutting drill carriage body vibration among the correlation technique has been alleviated to the roof cutting drill carriage.
Description
Technical Field
The utility model belongs to the technical field of the mining equipment technique and specifically relates to a cut top drill carriage is related to.
Background
With the maturity and the popularization and the application of the coal mine roof cutting pressure relief automatic roadway and the coal pillar-free mining technology, the roof cutting drill carriage is the equipment guarantee of the technology. The top hole cutting construction needs to meet the requirements of good hole forming quality, small drilling angle error and the like; however, the roof cutting drill carriage has a compact structure, a narrow machine body and small self weight of the whole vehicle, so that the vehicle body vibrates greatly in the process of cutting a roof hole, the quality of the formed hole is influenced, and the deviation of a drilling angle is large; when the angle deviation is large, the drilling holes may intersect, which affects the formation of the pre-crack surface.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a top cutting drill carriage to alleviate the great technical problem of the in-process top cutting drill carriage automobile body vibration of punching in the correlation technique.
The utility model provides a roof-cutting drill carriage includes: the drilling machine comprises a walking chassis, a drilling arm mechanism and a top support stable vehicle mechanism, wherein the drilling arm mechanism is arranged on the walking chassis;
the top support stable vehicle mechanism comprises a first telescopic driving piece and a supporting piece, the first telescopic driving piece is installed on the walking chassis and can extend out of the top cutting drill vehicle, and the supporting piece is installed at the driving end of the first telescopic driving piece.
Furthermore, the supporting piece is connected with the driving end of the first telescopic driving piece through a spherical hinge.
Furthermore, the first telescopic driving piece comprises a top support oil cylinder, the supporting piece comprises a supporting disc, and the supporting disc is connected with the driving end of the top support oil cylinder.
Furthermore, the number of the drill boom mechanisms is two, one of the drill boom mechanisms is mounted at the front end of the walking chassis, and the other drill boom mechanism is mounted at the rear end of the walking chassis.
Furthermore, the top-cutting drill carriage further comprises a sliding frame and a second telescopic driving piece, the sliding frame is connected with the traveling chassis in a sliding mode, a drill boom mechanism installed at the front end of the traveling chassis is installed on the traveling chassis through the sliding frame, and the second telescopic driving piece is connected with the traveling chassis and the sliding frame respectively.
Furthermore, the drill boom mechanism comprises a drill boom base, an adjusting component and a drilling machine, the drill boom base is installed on the walking chassis, and the adjusting component is respectively connected with the drill boom base and the drilling machine.
Furthermore, the adjusting assembly comprises a position adjusting assembly and an angle adjusting assembly, the position adjusting assembly is mounted on the drill boom base, the angle adjusting assembly is mounted on the position adjusting assembly, and the drilling machine is connected with the angle adjusting assembly.
Furthermore, the position adjusting assembly comprises a sliding plate and a transverse driving piece, the sliding plate is connected with the drill boom base in a sliding mode along the horizontal direction, the transverse driving piece is connected with the drill boom base and the sliding plate respectively, and the angle adjusting assembly is installed on the sliding plate.
Further, the angle adjustment subassembly includes the gyration driving piece, articulated frame and angle adjustment driving piece, the gyration driving piece install in the slide plate, and with articulated frame transmission is connected, the drilling machine with articulated frame is articulated, the angle adjustment driving piece respectively with articulated frame with the drilling machine is articulated.
Furthermore, an inclinometer is arranged on the hinged frame.
The utility model provides a roof-cutting drill carriage includes: the drilling machine comprises a walking chassis, a drilling arm mechanism and a top support stable vehicle mechanism, wherein the drilling arm mechanism is arranged on the walking chassis; the top supporting and vehicle stabilizing mechanism comprises a first telescopic driving piece and a supporting piece, the first telescopic driving piece is installed on the walking chassis and can extend out of the top of the roof cutting drill vehicle, and the supporting piece is installed at the driving end of the first telescopic driving piece. Use the utility model provides a when the roof cutting drill carriage punches, the roof cutting drill carriage stops behind the operation position of punching, and the first flexible driving piece of operating personnel operation stretches out, and first flexible driving piece drive support piece and tunnel roof in close contact with, the automobile body is stable motionless when guaranteeing the operation of punching, and then guarantees the pore-forming quality and reduces the drilling angular deviation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a roof cutting drill carriage according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a roof supporting and vehicle stabilizing mechanism in the roof cutting drill carriage according to the embodiment of the present invention;
fig. 3 is a schematic structural view of a walking chassis in the roof cutting drill carriage according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a drill boom mechanism in a roof-cutting drill carriage according to an embodiment of the present invention.
Icon: 100-a walking chassis; 201-front drill arm mechanism; 202-a rear boom mechanism; 210-a drill boom base; 211-a slide; 221-a slide plate; 222-a traverse drive; 231-a rotary drive; 232-hinged rack; 233-an angle adjustment drive; 234-inclinometer; 240-a hole drilling machine; 300-supporting a vehicle stabilizing mechanism; 310-supporting the oil cylinder; 320-a support disk; 400-sliding frame; 500-a second telescopic drive; 600-an electrical system; 700-hydraulic system.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIG. 1, the embodiment of the utility model provides a roof cutting drill carriage includes: the device comprises a walking chassis 100, a drill boom mechanism and a top support stable vehicle mechanism 300, wherein the drill boom mechanism is arranged on the walking chassis 100; the top support stable lathe mechanism 300 includes a first telescopic driving member installed on the traveling chassis 100 and capable of extending out from the top of the roof cutting drill lathe, and a supporting member installed at the driving end of the first telescopic driving member.
Specifically, first flexible driving piece sets up along vertical direction to install in the middle part of walking chassis 100, support piece are located first flexible drive assembly's top, and are connected with first flexible drive assembly's drive end, and first flexible driving piece is used for driving support piece along vertical direction rising or decline.
Use the embodiment of the utility model provides a when the roof cutting drill carriage punches, the roof cutting drill carriage stops behind the operation position that punches, and the first flexible driving piece of operating personnel operation stretches out, and first flexible driving piece drive support piece and tunnel roof in close contact with, the automobile body is stable motionless when guaranteeing the operation of punching, and then guarantees the pore-forming quality and reduces the drilling angular deviation.
In some embodiments, the supporting member may be fixedly mounted at the driving end of the first telescopic driving member, or hinged to the driving end of the first telescopic driving member through a hinge shaft. When first flexible driving piece drive support piece contacted with the tunnel roof, support piece accessible ball pivot was for the activity of first flexible driving piece to make support piece can adapt to the fluctuation of tunnel roof, guarantee support piece and tunnel roof in close contact with, thereby improve the stability of roof cutting drill carriage when punching.
The first telescopic driving member may be a top support cylinder 310 or a support cylinder, and the support member may be a support plate or a support plate 320, and in this embodiment, the first telescopic driving member includes the top support cylinder 310, and the support member includes the support plate 320, as shown in fig. 2, the support plate 320 is connected to the driving end of the top support cylinder 310.
Specifically, the top support cylinder 310 is disposed in a vertical direction, and a cylinder body of the top support cylinder 310 is installed in the middle of the traveling chassis 100. One end of the supporting plate 320 is movably connected with the piston rod of the top supporting oil cylinder 310 through a spherical hinge, one end of the supporting plate 320, which deviates from the top supporting oil cylinder 310, is provided with a plurality of supporting bulges, and the plurality of supporting bulges are arranged at intervals along the circumferential direction of the supporting plate 320. When punching, the piston rod of the top support oil cylinder 310 stretches out from the cylinder body of the top support oil cylinder 310, the drive support plate 320 is in contact with the roadway top plate, and the friction force between the support plate 320 and the roadway top plate is increased by the butting of the support bulges and the roadway top plate, so that the contact stability of the support plate 320 and the roadway top plate is improved.
Further, the number of the drilling boom mechanisms is two, wherein one drilling boom mechanism is installed at the front end of the traveling chassis 100, and the other drilling boom mechanism is installed at the rear end of the traveling chassis 100.
Specifically, the two drilling boom mechanisms are a front drilling boom mechanism 201 and a rear drilling boom mechanism 202 respectively, the front drilling boom mechanism 201 is installed at the front end of the traveling chassis 100, the rear drilling boom mechanism 202 is installed at the rear end of the traveling chassis 100, and the front drilling boom mechanism 201 and the rear drilling boom mechanism 202 are symmetrically arranged about the center line of the traveling chassis 100. Both the front boom mechanism 201 and the rear boom mechanism 202 can be used for drilling operation to meet different drilling requirements.
As shown in fig. 3, the roof cutting drill rig further includes a sliding frame 400 and a second telescopic driving member 500, the sliding frame 400 is slidably connected to the traveling chassis 100, the boom mechanism mounted at the front end of the traveling chassis 100 is mounted to the traveling chassis 100 through the sliding frame 400, and the second telescopic driving member 500 is respectively connected to the traveling chassis 100 and the sliding frame 400.
The sliding frame 400 is slidably connected to the front end of the traveling chassis 100, and specifically, the front end of the upper end surface of the traveling chassis 100 is provided with two sliding grooves, the two sliding grooves extend along the front-back direction of the traveling chassis 100, and the openings of the two sliding grooves are arranged oppositely. The sliding frame 400 is in a flat plate shape and is in sliding fit with the two sliding grooves. The second telescopic driving member 500 includes a telescopic cylinder or a telescopic cylinder, and in this embodiment, the second telescopic driving member 500 includes a telescopic cylinder. The cylinder body of the telescopic oil cylinder is positioned below the walking chassis 100 and arranged along the front-back direction of the walking chassis 100, the cylinder body of the telescopic oil cylinder is connected with the lower end face of the walking chassis 100, the piston rod of the telescopic oil cylinder extends out of the walking chassis 100 and is hinged with the sliding frame 400 through a connecting piece, and the axial direction of the hinged shaft is parallel to the width direction of the walking chassis 100. The front drill boom mechanism 201 is mounted on the sliding frame 400, and under the action of the telescopic oil cylinder, the front drill boom mechanism 201 can slide back and forth relative to the walking chassis 100 along with the sliding frame 400 so as to adjust the punching position of the front drill boom mechanism 201.
Further, the drill boom mechanism comprises a drill boom base 210, an adjusting assembly and a hole drilling machine 240, wherein the drill boom base 210 is mounted on the walking chassis 100, and the adjusting assembly is respectively connected with the drill boom base 210 and the hole drilling machine 240.
Specifically, the drill boom base 210 is fixedly installed on the traveling chassis 100, the adjusting assembly is installed on one side of the drill boom base 210 departing from the traveling chassis 100, and the hole drilling machine 240 is located on one side of the adjusting assembly departing from the drill boom base 210 and connected with the adjusting assembly. Use the embodiment of the utility model provides a when cutting the top drilling rig, the adjustable position and the angle of the rig 240 that punches of adjusting part to satisfy the different requirements of punching.
Further, the adjusting assembly comprises a position adjusting assembly and an angle adjusting assembly, the position adjusting assembly is installed on the drill boom base 210, the angle adjusting assembly is installed on the position adjusting assembly, and the hole drilling machine 240 is connected with the angle adjusting assembly.
The position adjusting assembly is installed on one side of the drill boom base 210, which is far away from the traveling chassis 100, the angle adjusting assembly is installed on one side of the position adjusting assembly, which is far away from the drill boom base 210, and the hole drilling machine 240 is installed on the angle adjusting assembly. The position adjusting assembly is used for adjusting the position of the drilling machine 240 in the horizontal direction, the angle adjusting assembly is used for adjusting the drilling angle of the drilling machine 240, and the position adjusting assembly and the angle adjusting assembly are matched to adjust the drilling machine 240 so as to meet different drilling requirements.
Further, the position adjusting assembly comprises a sliding plate 221 and a traverse driving member 222, the sliding plate 221 is connected with the drill boom base 210 in a sliding mode along the horizontal direction, the traverse driving member 222 is connected with the drill boom base 210 and the sliding plate 221 respectively, and the angle adjusting assembly is mounted on the sliding plate 221.
As shown in fig. 4, two slide ways 211 are provided on the end surface of the drill boom base 210 opposite to the position adjusting assembly, the two slide ways 211 extend along the width direction of the roof cutting drill carriage, openings of the two slide ways 211 are oppositely arranged, the sliding plate 221 is located between the two slide ways 211 and is in sliding fit with the two slide ways 211, and the angle adjusting assembly is located on one side of the sliding plate 221, which is far away from the drill boom base 210, and is connected with the sliding plate 221.
The traverse driving member 222 may comprise a traverse cylinder or a traverse cylinder, and in this embodiment, the traverse driving member 222 comprises a traverse cylinder, a cylinder body of the traverse cylinder is mounted on the drill boom base 210, and a piston rod of the traverse cylinder is connected to the sliding plate 221.
The transverse moving oil cylinder can drive the sliding plate 221 to move along the extending direction of the slide rail 211, and the sliding plate 221 drives the angle adjusting assembly and the drilling machine 240 to move, so that the position of the drilling machine 240 in the horizontal direction can be adjusted.
Further, the angle adjustment assembly comprises a rotary driving member 231, an articulation frame 232 and an angle adjustment driving member 233, wherein the rotary driving member 231 is mounted on the sliding plate 221 and is in transmission connection with the articulation frame 232, the hole drilling machine 240 is articulated with the articulation frame 232, and the angle adjustment driving member 233 is articulated with the articulation frame 232 and the hole drilling machine 240 respectively.
The rotary driving member 231 includes a rotary cylinder or a rotary oil cylinder, and in this embodiment, the rotary driving member 231 includes a rotary oil cylinder, as shown in fig. 4, the rotary driving member 231 is fixedly mounted on the sliding plate 221, the hinge frame 232 is fixedly mounted at the driving end of the rotary driving member 231, and the rotary shaft of the rotary driving member 231 extends along the horizontal direction and is perpendicular to the extending direction of the sliding way 211.
The hole drilling machine 240 is hinged to the hinge frame 232 through a hinge shaft, and the axis of the hinge shaft is parallel to the extending direction of the slide 211. The angle adjustment driving member 233 includes an angle adjustment cylinder or an angle adjustment cylinder, and in this embodiment, the angle adjustment assembly includes an angle adjustment cylinder, a cylinder body of the angle adjustment cylinder is hinged to the hinge frame 232, and a piston rod of the angle adjustment cylinder is hinged to the base of the drilling machine 240.
Use the embodiment of the utility model provides a when the roof cutting drill carriage punches, slewing drive piece 231 can drive drilling rig 240 along the width direction swing or the rotation of roof cutting drill carriage, and the angular adjustment hydro-cylinder can drive drilling rig 240 along the fore-and-aft direction swing of roof cutting rig, and slewing drive piece 231 adjusts the angle of drilling rig 240 with the cooperation of angular adjustment drive piece 233 to improve the precision of punching.
Further, an inclinometer 234 is arranged on the hinge frame 232.
The inclinometer 234 is electrically connected with a control mechanism of the roof cutting drill carriage, and the inclinometer 234 can be matched with the angle of the drilling rig 240 to adjust before drilling, so that the adjustment precision is improved.
Further, the embodiment of the present invention provides a roof cutting drill carriage, which further includes an electrical system 600 and a hydraulic system 700.
The electrical system 600 is installed in the middle of the equipment, comprises a mining voice light signal device, a mining explosion-proof and intrinsically safe vacuum electromagnetic starter, a mining illuminating lamp and the like, and provides electric energy for each execution component of the top-cutting drill carriage.
The hydraulic system 700 is arranged in the middle of the equipment and comprises an oil tank, a hydraulic oil pump, a motor, a hydraulic oil cylinder, a balance valve, a joint, a hydraulic pipeline, a cooler, a control valve on the hydraulic pipeline and the like. The hydraulic pipeline comprises a pipeline which is connected between an outlet of the oil tank and the hydraulic oil pump and between an outlet of the hydraulic oil pump and the walking chassis 100, the top support stable vehicle mechanism 300, the drill boom mechanism and the like. The top-cutting drill carriage obtains power from the hydraulic oil pump, then transmits the power to each actuating mechanism through a hydraulic pipeline, and completes actions such as walking, drilling and the like by matching with the control valve corresponding to each actuating mechanism.
The utility model discloses the implementation of roof cutting drilling construction operation is carried out to the roof cutting drill carriage as follows:
after the drill carriage stops at the punching operation position, an operator stretches out the top support oil cylinder 310, the support plate 320 rises to be in close contact with a roadway top plate, the stability of the vehicle body is kept when the punching operation is guaranteed, and then the quality of the formed hole is guaranteed and the deviation of the drilling angle is reduced. An operator adjusts the position of the front drill arm mechanism 201 to enable the longitudinal distance between the drill holes of the two drilling rigs 240 to meet the construction requirement; the operator adjusts the horizontal position, the front-back swing angle and the left-right swing angle of the front drill boom mechanism 201 and the rear drill boom mechanism 202 respectively to meet the construction requirements, and uses the inclinometer 234 installed on the drilling machine to adjust the angles, and the drilling operation can be carried out after the position and angle adjustment is finished.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A roof cutting drill rig, comprising: the drilling rig comprises a walking chassis (100), a drill boom mechanism and a top support stable vehicle mechanism (300), wherein the drill boom mechanism is arranged on the walking chassis (100);
the top support stable vehicle mechanism (300) comprises a first telescopic driving piece and a supporting piece, the first telescopic driving piece is installed on the walking chassis (100) and can extend out of the top of the roof cutting drill vehicle, and the supporting piece is installed at the driving end of the first telescopic driving piece.
2. The roof cutting drill rig according to claim 1, wherein the support is connected to the drive end of the first telescopic drive by a ball joint.
3. The roof cutting drill carriage according to claim 2, characterized in that the first telescopic drive comprises a roof support cylinder (310), the support comprises a support disc (320), the support disc (320) being connected with the drive end of the roof support cylinder (310).
4. The roof cutting rig according to any of the claims 1-3, characterized in that the number of said boom mechanisms is two, wherein one of said boom mechanisms is mounted at the front end of said walking chassis (100) and the other one of said boom mechanisms is mounted at the rear end of said walking chassis (100).
5. The roof cutting drill rig according to claim 4, characterized in that the roof cutting drill rig further comprises a sliding frame (400) and a second telescopic driving member (500), the sliding frame (400) is slidably connected with the walking chassis (100), a drill boom mechanism mounted at the front end of the walking chassis (100) is mounted on the walking chassis (100) through the sliding frame (400), and the second telescopic driving member (500) is respectively connected with the walking chassis (100) and the sliding frame (400).
6. The roof cutting drill rig according to claim 4, characterized in that the boom mechanism comprises a boom base (210), an adjustment assembly and a hole drilling machine (240), the boom base (210) being mounted to the walking chassis (100), the adjustment assembly being connected with the boom base (210) and the hole drilling machine (240), respectively.
7. The roof cutting drill rig according to claim 6, characterized in that the adjustment assembly comprises a position adjustment assembly and an angle adjustment assembly, the position adjustment assembly being mounted to the drill boom foot (210), the angle adjustment assembly being mounted to the position adjustment assembly, the hole drilling rig (240) being connected to the angle adjustment assembly.
8. The roof cutting drill rig according to claim 7, characterized in that the position adjustment assembly comprises a skid plate (221) and a traverse driving member (222), the skid plate (221) is slidably connected with the drill boom base (210) in a horizontal direction, the traverse driving member (222) is respectively connected with the drill boom base (210) and the skid plate (221), and the angle adjustment assembly is mounted to the skid plate (221).
9. The roof cutting drill rig according to claim 8, characterized in that the angle adjustment assembly comprises a rotary drive (231), an articulation frame (232) and an angle adjustment drive (233), the rotary drive (231) being mounted to the skid plate (221) and being in driving connection with the articulation frame (232), the drilling rig (240) being articulated with the articulation frame (232), the angle adjustment drive (233) being articulated with the articulation frame (232) and the drilling rig (240), respectively.
10. The roof cutting rig according to claim 9, characterized in that an inclinometer (234) is provided on the articulated frame (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538700.3U CN212642588U (en) | 2020-07-29 | 2020-07-29 | Roof cutting drill carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538700.3U CN212642588U (en) | 2020-07-29 | 2020-07-29 | Roof cutting drill carriage |
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| Publication Number | Publication Date |
|---|---|
| CN212642588U true CN212642588U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021538700.3U Active CN212642588U (en) | 2020-07-29 | 2020-07-29 | Roof cutting drill carriage |
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| CN (1) | CN212642588U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250689A (en) * | 2021-07-08 | 2021-08-13 | 北京中矿创新联盟能源环境科学研究院 | Coal mining device |
| CN113294169A (en) * | 2021-07-08 | 2021-08-24 | 北京中矿创新联盟能源环境科学研究院 | Mining equipment |
| CN113356765A (en) * | 2021-07-05 | 2021-09-07 | 中国煤炭科工集团太原研究院有限公司 | Coal mine digging and anchoring machine |
-
2020
- 2020-07-29 CN CN202021538700.3U patent/CN212642588U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356765A (en) * | 2021-07-05 | 2021-09-07 | 中国煤炭科工集团太原研究院有限公司 | Coal mine digging and anchoring machine |
| CN113356765B (en) * | 2021-07-05 | 2023-10-13 | 中国煤炭科工集团太原研究院有限公司 | Coal mine digging and anchoring machine |
| CN113250689A (en) * | 2021-07-08 | 2021-08-13 | 北京中矿创新联盟能源环境科学研究院 | Coal mining device |
| CN113294169A (en) * | 2021-07-08 | 2021-08-24 | 北京中矿创新联盟能源环境科学研究院 | Mining equipment |
| CN113294169B (en) * | 2021-07-08 | 2021-11-05 | 北京中矿创新联盟能源环境科学研究院 | Mining equipment |
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