CN214836363U - Novel tunneling and supporting integrated equipment - Google Patents

Novel tunneling and supporting integrated equipment Download PDF

Info

Publication number
CN214836363U
CN214836363U CN202022325927.6U CN202022325927U CN214836363U CN 214836363 U CN214836363 U CN 214836363U CN 202022325927 U CN202022325927 U CN 202022325927U CN 214836363 U CN214836363 U CN 214836363U
Authority
CN
China
Prior art keywords
base
main frame
rotary table
support frame
guide rail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022325927.6U
Other languages
Chinese (zh)
Inventor
马二强
郭明生
李国华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202022325927.6U priority Critical patent/CN214836363U/en
Application granted granted Critical
Publication of CN214836363U publication Critical patent/CN214836363U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Earth Drilling (AREA)

Abstract

A novel tunneling and supporting integrated device comprises a main frame and a cutting part arranged on the main frame, wherein the cutting part comprises a rotary table base, the rotary table base is connected with a rotary table, one end of the rotary table is connected with one end of a cutting arm, the other end of the cutting arm is connected with a cutting head, a scraper conveyor is arranged in the middle of the main frame, a pair of guide rail pairs is arranged between the rotary table base and the main frame, and a rotary table base driving device is arranged; a support frame is arranged on the main frame at the side of the base of the rotary table, and a guide rail pair and a driving device are arranged between the base of the support frame and the main frame. The revolving platform base and the support frame base move on the main frame through a hydraulic system and do not interfere with each other. The equipment is mainly used for simultaneous operation of tunneling and temporary supporting in the tunneling process, the tunneling working efficiency is comprehensively improved, the labor intensity of workers is reduced, and the potential safety hazard is reduced.

Description

Novel tunneling and supporting integrated equipment
Technical Field
The utility model relates to a novel tunnelling and strut integration equipment belongs to tunnelling machinery technical field.
Background
At present, due to the complexity of underground operation environment, the limitation of conditions such as narrow space, inconvenient illumination, high temperature environment difference and the like is caused, three types of common advance support devices for a tunneling working surface are provided, a first type of single anchor rod support device is used, after tunneling work is completed, a tunneling machine is retreated to a position outside a cutting area, a single column is used for temporarily supporting an empty roof area, a tunnel is permanently supported by carrying a bolting machine through manpower, the bolting machine is required to be matched by a plurality of people for supporting, and personnel are exposed in the empty roof area, so that certain safety risk exists. The supporting efficiency is low, the supporting mode is complex, and the labor intensity of workers is increased. The second hydraulic anchor rod drill carriage supporting device is limited by the width of a roadway, the cutting back tunneling machine needs to withdraw from a supporting area, the leaning position of the tunneling machine needs to be moved repeatedly, a channel can be staggered to enable the hydraulic anchor rod drill carriage supporting device to enter and exit the supporting area, an anchor rod drill carriage is not easy to find an optimal supporting position due to the influence of space and conditions, the drilling position is not easy to find during operation of the drill carriage, the operation is complex, the supporting time is too long, and the improvement of the tunneling efficiency of the roadway is limited. The drill carriage can only erect a temporary supporting area in the area, and the supporting area has certain safety risk. The anchor rod drilling machine is directly mounted on the tunneling machine and moves together with the tunneling machine, after tunneling and cutting are completed, temporary support is supported, the support area is small, full-face support cannot be achieved, anchor rod support personnel still operate in a half-empty-top area, after the temporary support is well supported, tunneling can continue after anchor rod support is completed, and if the tunneling machine needs to be moved, the machine-mounted support needs to be retracted, so that the tunneling working efficiency is seriously affected. The cutting part can not move in the supporting area, the operation space is limited, the operation flexibility is poor, and the roof supporting operation can not be carried out at the same time. The supporting device has the defects of complicated working mode, poor temporary supporting effect and low working efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: the utility model discloses a tunnelling, temporary support, novel tunnelling as an organic whole, strut integration equipment system, the tunnel tunnelling that has significantly reduced, the difficulty of strutting, realize tunnelling, strut parallel operation, tunnelling, strut the equipment transposition construction, the operating space has improved the condition for respective, realize high efficiency tunnelling guarantee, intensity of labour has been reduced, the full-section temporary support of equipment top has also brought strong safety guarantee for the staff, factor of safety has been strengthened, make the tunnelling strut the operation security and obtain increasing substantially.
The technical scheme of the utility model specifically does:
the utility model provides a novel tunnelling and strut integration are equipped, sets up cutting units on main frame, the main frame, and cutting units includes the revolving platform base, connects the revolving platform on the revolving platform base, and cutting arm one end is connected to revolving platform one end, and the cutterhead is connected to the cutting arm other end, and the main frame middle part sets up scraper conveyor, set up a pair of guide rail pair and set up revolving platform base drive arrangement between revolving platform base and the main frame.
A novel tunneling and supporting integrated device is characterized in that a supporting frame is arranged on a main frame on the side of a rotary table base, and a supporting frame guide rail pair and a driving device are arranged between the supporting frame base and the main frame.
The utility model provides a novel tunnelling and strut integration equipment, the support frame guide rail is vice for two, is located the revolving platform base both sides respectively.
The utility model provides a novel tunnelling and strut integration equipment, set up the ceiling device on the support frame, set up the recess of fixed anchor roof beam interval, construction stock locating hole and the round hole of installation anchor dish on the ceiling device.
The utility model provides a novel tunnelling and strut integration and equip, the guide rail pair that sets up between revolving platform base and the main frame includes slider a that sets up on the revolving platform base and the guide rail b that sets up on the main frame, and revolving platform base drive arrangement is including fixing revolving platform hydraulic motor on the revolving platform base and fixing the rack on the main frame, revolving platform hydraulic motor output shaft fixed connection driving gear, the driving gear with fix the rack meshing on the main frame.
The utility model provides a novel tunnelling and strut integration are equipped, the strut base slider d that sets up on the guide rail c that sets up on the strut base and the main frame is vice including the guide rail on the strut base, and strut base drive arrangement is including fixing the chain that sets up on the strut base hydraulic motor on the strut base and the main frame, and strut base hydraulic motor output shaft fixed connection sprocket, the chain meshing that sets up on sprocket and the main frame.
Drawings
Fig. 1 is a schematic structural diagram (a) of the present invention.
Fig. 2 is a schematic structural diagram (ii) of the present invention.
FIG. 3 is a schematic view of a base structure of a turntable.
Fig. 4 is a schematic structural diagram (iii) of the present invention.
Fig. 5 is a schematic structural diagram (iv) of the present invention.
Fig. 6 is a schematic view of the base structure of the support frame.
Fig. 7 is a schematic view of a rock bolt drill configuration.
Fig. 8 is a schematic structural view of a guide rail pair and a driving device arranged on a base of a rotary table.
Fig. 9 is a schematic structural view of a guide rail pair and a driving device arranged on a support base.
Fig. 10 is a schematic structural diagram (v) of the present invention.
Fig. 11 is a schematic structural view of the all-directional combined type anchor drill loader.
Figure 12 is an attachment means for a modular support column.
Fig. 13 shows a structure of the swing mechanism.
Figure 14 shows one configuration of a telescopic strut.
Figure 15 is a top view of one configuration of a telescoping strut.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the present invention, it is noted that relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used herein to indicate orientations or positional relationships based on the drawings, and are used for convenience in describing the present invention, but do not indicate or imply that the device or element so referred to must have this particular orientation, be operated in a particular orientation configuration, and not be construed as limiting the present invention.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments thereof.
As shown in fig. 1, 2, 3, 4, a novel tunneling and supporting integrated equipment comprises a main frame 1, a cutting part 2 is arranged on the main frame 1, the cutting part 2 comprises a revolving platform base 21, a revolving platform 22 is rotatably connected on the revolving platform base 21, the end a of the revolving platform 22 is rotatably connected with the end B of a cutting arm 23, the end C of the cutting arm 23 is rotatably connected with a cutting head 24, a scraper conveyor 3 is arranged at the middle part of the main frame 1, a guide rail pair 4 is arranged between the revolving platform base 21 and the main frame 1 and is provided with a revolving platform base driving device 5, the guide rail pair 4 is respectively arranged at two sides of the main frame 1, the revolving platform base driving device 5 is fixedly connected on the revolving platform base 21 through bolts, and the revolving platform base 21 can move on the main frame 1 under the driving of the revolving platform base driving device 5. After the cutting part 2 finishes cutting, the rotary table base 21 retreats along the guide rail pair 4, and a larger space can be reserved in front for supporting and topping.
As shown in fig. 5 and 6, in the novel integrated tunneling and supporting equipment, a supporting frame 6 is slidably connected to a main frame 1 at the side of a revolving platform base 21, and a guide rail pair 7 and a driving device 8 are arranged between a supporting frame base 61 and the frame 1. The support frame base 61 is movable on the main frame 1 by the drive device 8.
As shown in fig. 5 and 6, the two support frame guide rail pairs 7 are respectively located at two sides of the rotary table base 21, and the movement of the support frame base 61 on the main frame 1 and the movement of the rotary table base 21 on the main frame 1 do not interfere with each other. During operation of the cutting unit 2, the support frame 6 can also be moved on the main frame 1.
As shown in fig. 7, each support frame guide rail pair 7 is provided with two support columns 62, 4 support columns 62 are provided in total, the support frame 6 is composed of 4 support columns 62, a ceiling device 64 is provided on the support frame 6, and a groove 65 for fixing the distance between anchor beams, a construction anchor rod positioning hole 66 and a circular hole for installing an anchor disk are provided on the ceiling device 64. The roof drilling machine can drill the roof through the anchor rod positioning hole 66, the supporting mechanism adjusts the front-back and up-down ranges of the roof according to the circulation progress and construction requirements, the anchor net anchor beams are connected in a binding and networking mode in advance, the anchor net anchor beams connected in a binding and networking mode on the roof device 64 are directly moved to the supporting position to jack up after tunneling, and temporary supporting is carried out. The jumbolter used here is preferably a rotary jumbolter rig, for example, an all-directional combined jumbolter rig disclosed in patent document No. 982442805.7, which is composed of a support column, a drilling rig, and a hydraulic device for providing rotation and propulsion power to them, and the like, and is characterized in that the support column and the drilling rig are respectively integrated, the support column is combined by a lifting cylinder, a swing mechanism and a telescopic support rod, the telescopic support rod is arranged on the upper side, the swing mechanism is arranged in the middle, the lifting cylinder is arranged on the lower side, and the lifting cylinder and the swing mechanism are movably connected with each other, and the drilling rig is movably connected to the swing mechanism of the combined support column. The main body of the rotary mechanism is provided with an inserting port at the lower end, the inserting port is respectively movably inserted with the lower end of the telescopic support rod and the upper end of a piston rod of the telescopic oil cylinder, a horizontal hole is arranged on the main body of the rotary mechanism, a rotary shaft is arranged in the hole, the rotary shaft is transmitted to a pipe sleeve matched with a shaft through a key, the pipe sleeve horizontally extends out of the main body hole and is connected with a clamp formed by two and a half rings into a whole, a drill body vertically extends into the clamp, the clamp is fastened by a bolt, a rotary gap is arranged between the pipe sleeve and the hole diameter of the rotary main body, a bearing is arranged between the rotary shaft and the main body hole, the clamp and the pipe sleeve are fixedly connected with a rotary disc, at least one hole is arranged on the rotary disc on the same diameter for a rotary pin with a thread at the tail part to penetrate, the head part of the rotary pin is arranged in an annular groove arranged on the end surface of the rotary main body and is limited by a fixed disc between the annular groove and the rotary disc, the end thread at the tail part of the rotary pin is matched with a handle nut, the tightness of the handle nut acts on the end surface of the rotating disc. The telescopic support rod comprises a bamboo-shaped telescopic rod with an outer annular groove, the lower end of the telescopic rod is movably inserted into the upper end of the rotary mechanism, a support seat is further arranged between the telescopic rod and a support sliding sleeve sleeved outside the telescopic rod, the support seat is in threaded connection with the support sliding sleeve, an annular groove is also arranged on the support seat, two semicircular clamping rings in the horizontal direction are arranged between the annular groove and the outer annular groove of the bamboo-shaped telescopic rod, the thickness of the two semicircular clamping rings corresponds to the width of the two grooves, the outer sides of the two semicircular clamping rings are respectively connected with two horizontal force application screws arranged on the support seat, and handle nuts are matched on the force application screws.
As shown in fig. 11, the combined support column of the omnibearing combined anchor rod drilling and installing machine is formed by movably connecting three independent parts, namely a lifting cylinder 100, a swing mechanism 200 and a telescopic support rod 300.
The bayonet style of the plug shown in fig. 12 can be quickly assembled and disassembled to facilitate the mutual carrying and well descending. The jumbolter 400 is fixed on the slewing mechanism 200 and can rotate 360 degrees along with the slewing machine, after the hydraulic motor of the jumbolter is driven, the output shaft of the hydraulic motor is connected with the internal hexagonal rod clamping mechanism, the slewing torque of the motor is transmitted to the drill rod 500, and the drill bit is driven to cut and break rock. The piston rod of the double telescopic propulsion oil cylinder is connected with the shell of the hydraulic motor, the propulsion of the oil cylinder realizes the thrust required in the drilling, and when a top plate hole is drilled, the drilling machine has the same function as the single hydraulic rod laying drilling machine used at present. When drilling the side hole and the inclined angle hole, the drilling machine only needs to rotate to a required angle through the rotating mechanism 200 and is fixed, and the counter force in the operation is borne by the combined supporting column. As shown in fig. 13, the upper and lower ends of the main body 700 of the swing mechanism are movably inserted into the telescopic rod and the lift cylinder respectively, and the telescopic rod and the lift cylinder are adjusted to make the swing mechanism drive the drilling machine to move up and down to drill any high and low side holes. The rotation shaft 130 is disposed in a horizontal center hole of the body 700 with a bearing therebetween to ensure rotation flexibility. The pivot shaft 130 is turned by a key to the sleeve 160. the sleeve 160 is integral with two semi-circular clips 500 outside the body hole which secure the drill 400 by screwing. The pipe sleeve 160 of the hoop 500 is welded with the rotary disc 800 into a whole, two rotating pins 600 are arranged on the rotary disc 800 along the circumference, the heads of the rotating pins 600 are arranged in the annular groove 140 on the side end face of the main body 700, and the heads of the rotating pins 600 are limited in the annular groove 140 by the fixed disc 150. The thread tail part of the rotating pin 600 penetrates through the rotating disc 800 and is screwed with the handle nut 900, when the handle nut 900 is screwed, the rotating disc 800 is pressed tightly and cannot rotate, when the hand nut is unscrewed, the rotating shaft 130 rotates to enable the rotating disc 800 to rotate 360 degrees in the annular color groove through the rotating pin 600, when the hand nut is rotated to a required angle, the handle nut is fastened, and then the side hole with any angle can be drilled. The telescopic strut shown in fig. 14 and 15 comprises a secondary shrinkage rod 120, a support sleeve 160, a support base 170, a handle 310, a rotating nut 180, a force application screw 210, two semicircular ring locking mechanisms 110 and the like. When the telescopic rod 120 is rapidly inserted into the rotary mechanism according to the modes shown in fig. 2 and 3, when the telescopic supporting rod needs to be extended or shortened, firstly, the nut 18 is driven to rotate by the loose handle 310, because the steps of the nut 18 are limited left and right, the force application screw 210 is relatively loosened, the semicircular ring 110 is moved out of the bamboo-shaped outer annular groove of the telescopic rod 120 and retracts into the annular groove of the supporting seat 170, at the moment, the supporting sleeve 160 can be moved up or down for a required distance, and after the lower end surface 190 of the supporting seat is aligned with the scribed line 320 arranged on the telescopic rod, the nut 180 is driven by the handle 310 to be screwed tightly, the force application pin 21 enables the semicircular ring 11 to enter the bamboo-shaped outer annular groove of the telescopic rod 120, and the supporting seat 170 and the supporting sleeve 160 connected with the supporting seat into a whole are connected with the telescopic rod 120 by the semicircular ring 110 to bear the counter force of the drilling machine.
As shown in fig. 8, the novel tunneling and supporting integrated equipment is characterized in that the guide rail pair 4 arranged between the rotary table base 21 and the main frame 1 comprises a slide block a arranged on the rotary table base 21 and a guide rail b arranged on the main frame, the rotary table base 21 driving device 5 comprises a rotary table hydraulic motor 25 fixed on the rotary table base 21 and a rack 11 fixed on the main frame, an output shaft of the rotary table hydraulic motor is fixedly connected with a driving gear 26, and the driving gear 26 is meshed with the rack 11 fixed on the main frame.
As shown in fig. 9, the novel tunneling and supporting integrated equipment includes a support frame guide rail pair 7, which includes a guide rail c disposed on a support frame base 61 and a support frame base slide block d disposed on the main frame 1, a support frame base driving device 8, which includes a support frame base hydraulic motor 67 fixed on the support frame base 61 and a chain 12 disposed on the main frame 1, wherein an output shaft of the support frame base hydraulic motor 67 is fixedly connected with a chain wheel 68, and the chain wheel 68 is engaged with the chain 12 disposed on the main frame 1.
The working process of the utility model is as follows (or working principle or using method): the cutting part moves to a cutting position through the guide rail pair arranged between the turntable base and the main frame and the turntable base driving device, the cutting part works, and when the cutting part works, the guide rail of the support frame base on the main frame moves to enable the ceiling device to be close to a cutting surface as far as possible, so that temporary support is formed, and the empty top distance of the top of the cutting part is reduced. After the cutting part finishes a certain working distance, the cutting part moves backwards on the guide rail of the main frame and exits from the cutting position. The supporting frame moves forwards to form temporary support, workers use a drilling machine to carry out topping support work under the ceiling device, and after the workers finish topping support work, the cutting part moves forwards to finish a work cycle.
See the prior art for additional details.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (6)

1. The utility model provides a novel tunnelling and strut integration are equipped, sets up cutting units on main frame, the main frame, and cutting units includes the revolving platform base, connects the revolving platform on the revolving platform base, and cutting arm one end is connected to revolving platform one end, and the cutterhead is connected to the cutting arm other end, and the main frame middle part sets up scraper conveyor, its characterized in that: a pair of guide rail pairs and a revolving platform base driving device are arranged between the revolving platform base and the main frame.
2. A novel tunneling and supporting integrated equipment as claimed in claim 1, characterized in that: and a support frame is arranged on the main frame at the side of the base of the rotary table, and a support frame guide rail pair and a driving device are arranged between the support frame base and the main frame.
3. A novel tunneling and supporting integrated equipment as claimed in claim 2, characterized in that: the two guide rail pairs of the support frame are respectively positioned on two sides of the base of the rotary table.
4. A novel tunneling and supporting integrated equipment as claimed in claim 3, characterized in that: the supporting frame is provided with a ceiling device, and the ceiling device is provided with grooves for fixing the space between the anchor beams, a construction anchor rod positioning hole and a circular hole for installing an anchor disc.
5. A novel tunneling and supporting integrated equipment as claimed in any one of claims 1 to 4, characterized in that: the guide rail pair arranged between the rotary table base and the main frame comprises a sliding block a arranged on the rotary table base and a guide rail b arranged on the main frame, the rotary table base driving device comprises a rotary table hydraulic motor fixed on the rotary table base and a rack fixed on the main frame, an output shaft of the rotary table hydraulic motor is fixedly connected with a driving gear, and the driving gear is meshed with the rack fixed on the main frame.
6. A novel tunneling and supporting integrated equipment as claimed in claim 2, characterized in that: the support frame guide rail pair comprises a guide rail c arranged on a support frame base and a support frame base sliding block d arranged on a main frame, the support frame base driving device comprises a support frame base hydraulic motor fixed on the support frame base and a chain arranged on the main frame, an output shaft of the support frame base hydraulic motor is fixedly connected with a chain wheel, and the chain wheel is meshed with the chain arranged on the main frame.
CN202022325927.6U 2020-10-19 2020-10-19 Novel tunneling and supporting integrated equipment Active CN214836363U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022325927.6U CN214836363U (en) 2020-10-19 2020-10-19 Novel tunneling and supporting integrated equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022325927.6U CN214836363U (en) 2020-10-19 2020-10-19 Novel tunneling and supporting integrated equipment

Publications (1)

Publication Number Publication Date
CN214836363U true CN214836363U (en) 2021-11-23

Family

ID=78756720

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022325927.6U Active CN214836363U (en) 2020-10-19 2020-10-19 Novel tunneling and supporting integrated equipment

Country Status (1)

Country Link
CN (1) CN214836363U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114151081A (en) * 2021-12-27 2022-03-08 永城煤电控股集团有限公司 Large-scale excavating equipment for multi-azimuth coal mine excavation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114151081A (en) * 2021-12-27 2022-03-08 永城煤电控股集团有限公司 Large-scale excavating equipment for multi-azimuth coal mine excavation

Similar Documents

Publication Publication Date Title
CN101832102B (en) Movable two-platform partitioned four-arm hanging wall anchor rod and anchor cable construction drill carriage
CN103061673B (en) Multifunctional micropile rig
CN101832103B (en) Movable two-arm hanging wall anchor rod and anchor cable construction drill carriage
CN101086205A (en) Tunneling, anchoring and drilling composite machine
WO2009155776A1 (en) A dilling, loading, transporting and anchoring integration machine for laneway in coal mine
CN209817930U (en) Rail-walking type foldable tunnel pipe erecting machine for coal mine
CN211500645U (en) Adjustable multi-point tunneling device for coal mining
CN214836363U (en) Novel tunneling and supporting integrated equipment
EA029885B1 (en) Hydraulic-driven mobile drilling rig
CN212079348U (en) Auxiliary device for pneumatic jumbolter
CN202055821U (en) Two-arm top slope anchor rod and anchor rope construction drill wagon with movable lifting platform
JPS61176788A (en) Drilling and/or lifting machine
CN101845952B (en) Movable three-arm top-assisting anchor rod and anchor cable construction drill carriage
CN117432430A (en) Method and equipment for tunneling drilled hard rock tunnel
CN101311496A (en) Mining and cutting method for mine and equipment therefor
CN201635656U (en) Side-propping anchor rod-anchor cable construction drill carriage with three movable arms
CN114382497A (en) Novel tunneling and supporting integrated equipment unit
CN115680506A (en) Verticality adjusting structure for rotary drilling machine
CN112343578B (en) Visual logging mechanism tunneling device
CN111720056B (en) Ground anchor crossing construction equipment
CN211573380U (en) Drilling equipment for coal mine tunneling operation
CN201635655U (en) Side-propping anchor rod-anchor cable construction drill carriage with two movable arms
CN202483438U (en) Anchor rod drill rig
CN201031703Y (en) Mine mining and cutting equipment
CN220791152U (en) Frame column type drilling machine for coal mine tunnel

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant