CN110905406B - Multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction - Google Patents
Multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction Download PDFInfo
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- CN110905406B CN110905406B CN201911274672.0A CN201911274672A CN110905406B CN 110905406 B CN110905406 B CN 110905406B CN 201911274672 A CN201911274672 A CN 201911274672A CN 110905406 B CN110905406 B CN 110905406B
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- 239000011435 rock Substances 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 49
- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims description 24
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 239000007858 starting material Substances 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 239000003245 coal Substances 0.000 abstract description 5
- 230000005641 tunneling Effects 0.000 description 15
- 238000011068 loading method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- 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
- E21B7/024—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling
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- 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
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
-
- 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
- E21B7/023—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
- E21D23/063—Retractable cantilever extensions therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of underground coal mine development equipment, and particularly relates to a multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction. The technical scheme includes that the hydraulic machine comprises a machine body part, a lifting part, two drilling arm parts, a front stabilizer, a front support, an electrical system and a hydraulic system; the lifting part is arranged at the middle position on the machine body part, the two drill boom parts are symmetrically arranged on the left side and the right side on the lifting part, the front part is stably arranged at the front end of the machine body part, the front part support is arranged at the front end of the lifting part, the electric system is arranged at the right rear side of the machine body part, the hydraulic system is arranged in the middle of the left side of the machine body part and is positioned behind the two drill boom parts. The invention can carry out mechanized construction operation on various blasting holes at the head of a hard rock roadway, roof side different positions, anchor rods with various angles and anchor cable holes, and simultaneously the drill carriage can realize remote control operation, thereby reducing the configuration of underground roadway equipment, saving the time between construction procedures, and having low labor intensity and high working efficiency.
Description
Technical Field
The invention belongs to the technical field of underground coal mine development equipment, and particularly relates to a multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction. The method is suitable for mechanized development operation of the working face of the underground coal mine rock roadway, and can be used for constructing full-section blasting holes and anchor rod and anchor rope supporting operation holes.
Background
In the technical field of underground coal mine development equipment, the rock drivage of coal mines in China still adopts a drilling and blasting method, and the construction process flow of the rock drivage of the drilling and blasting method is as follows: drilling and blasting, loading, transporting and supporting. The duration of the drilling blasting and roadway support working procedures is about 50% -70% of the duration of one working cycle. When the drilling operation is carried out by using a single rock drill, a pneumatic rock drill, a common rock drill carriage and the like, the time is longer. Along with the continuous development of mining equipment, the original drilling equipment can not meet the construction process requirements of rock drift tunneling at the present stage, each mining group has the problems of tunneling, hole drilling and supporting, tunneling efficiency is low, especially when hard rock stratum is encountered, labor intensity of workers is extremely high, drill bit abrasion of a common drilling drill rod is rapid, loss of parts of an anchor rod drill carriage is also great, and when the workers operate, potential safety hazards exist, and the series of problems severely restrict and influence the working efficiency of rock drift tunneling.
Disclosure of Invention
The invention aims to provide a multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction, which adopts an impact type multifunctional airborne drilling machine, is matched with two sets of drilling arms which can independently operate and operate in parallel, can mechanically construct various blasting holes at the head of a hard rock roadway, roof side different positions and various angle anchor rods and anchor rope holes, fully plays the technical advantages of electrohydraulic control, can realize remote control operation, has multiple functions and multiple functions, reduces the configuration of underground roadway equipment, saves the auxiliary time between two working procedures of construction head-on blasting holes and construction anchor rod and anchor rope hole supporting operation, solves the problems of tension in tunneling and unbalanced tunneling on the basis, reduces the labor intensity of workers and improves the working efficiency of rock roadway tunneling.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
Multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction, wherein: comprises a machine body part, a lifting part, two drill arm parts, a front stabilizing part, a front supporting part, an electric system and a hydraulic system; the lifting part is arranged at the middle position on the machine body part, the two drill boom parts are symmetrically arranged on the left side and the right side on the lifting part, the front part is stably arranged at the front end of the machine body part, the front part support is arranged at the front end of the lifting part, the electric system is arranged at the right rear side of the machine body part, the hydraulic system is arranged in the middle of the left side of the machine body part and is positioned behind the two drill boom parts.
The machine body comprises a front connecting beam, a rear connecting beam, two tracks, a platform, a vacuum electromagnetic starter and a cable winding device; the top end of the front connecting beam is connected with the front end of the bottom surface of the platform, the top end of the rear connecting beam is connected with the rear end of the bottom surface of the platform, and the two side surfaces of the front connecting beam and the rear connecting beam are fixed on the track; the two tracks are respectively and symmetrically arranged at the left side and the right side of the front connecting beam and the rear connecting beam; the vacuum electromagnetic starter is arranged on the right rear side of the upper surface of the platform, so that the starting and stopping of an electrical system are facilitated; the cable winding device is arranged on the left rear side of the upper surface of the platform, so that winding and unwinding of the cable are facilitated.
The lifting part comprises a swing oil cylinder assembly, a lifting oil cylinder I, a lifting oil cylinder seat I, a connecting rod mechanism, a lifting frame, a lifting oil cylinder seat II, a lifting oil cylinder II, a turning plate, a lifting platform, a turning plate assembly and a drill boom fixing seat; the lifting oil cylinder seat I and the lifting oil cylinder seat II are arranged on a platform of the machine body; the cylinder body of the lifting cylinder I is hinged with the lifting cylinder seat I, and the telescopic rod of the lifting cylinder I is hinged with the lifting frame; the lifting oil cylinders II are arranged in a bilateral symmetry manner; the cylinder body of the lifting oil cylinder II is hinged with the lifting oil cylinder seat II, and the telescopic rod of the lifting oil cylinder II is hinged with the drill boom fixing seat; one end of the connecting rod mechanism is arranged on the platform of the machine body part, and the other end of the connecting rod mechanism is hinged with the lifting frame; the lifting oil cylinder I and the lifting oil cylinder II are telescopic to drive the link mechanism and the lifting frame to lift up and down, so that the mechanical drilling construction requirements of different heights are met; the two lifting platforms are symmetrically fixed on the two sides of the lifting frame; the swing oil cylinder assemblies are arranged in a bilateral symmetry way, the cylinder body of the swing oil cylinder assemblies is connected with the lifting platform, the rotating shaft of the swing oil cylinder assemblies is connected with the turning plate, and the turning plate can be turned outwards under the action of the swing oil cylinder assemblies, so that the standing area is increased, and the operation of personnel is facilitated; the turning plate assemblies are arranged in a bilateral symmetry manner and are arranged on the outer side face of the lifting platform, so that a person can conveniently stand; the drill boom fixing seat is divided into two parts, which are symmetrically arranged left and right, the side surface of the drill boom fixing seat is fixedly connected with the lifting frame, and the connecting lug of the drill boom fixing seat is hinged with the telescopic rod of the lifting oil cylinder II; the lifting part can be lifted up and down under the action of the lifting oil cylinder I, the lifting oil cylinder II and the connecting rod mechanism, and the drilling operation construction requirements of drill carts at different heights are met.
The drill boom parts are divided into two groups and are symmetrically arranged on the lifting platform of the lifting part from left to right; each group of the drill boom parts consists of a drill boom revolving seat I, a drill boom outer sleeve, a drill boom inner sleeve, a drill boom telescopic cylinder, a drill boom operating part, a drill boom supporting cylinder, a support rod outer sleeve, a support rod telescopic cylinder, a support rod inner sleeve, a drill boom revolving seat II, a swinging cylinder fixing plate, a 65 swinging cylinder, a 42 cylinder fixing seat, a 42 swinging cylinder, an onboard drilling machine, a drill boom revolving cylinder I, a small platform and a drill boom revolving cylinder II; the drill boom revolving seat I is hinged on a drill boom fixing seat of the lifting part, a cylinder body of the drill boom revolving oil cylinder II is hinged with the lifting frame, a telescopic rod of the drill boom revolving oil cylinder II is hinged with the drill boom revolving seat I, and the drill boom revolving seat I is driven to revolve left and right around the drill boom fixing seat by the telescopic rod of the drill boom revolving oil cylinder II, so that drilling construction operations in different width ranges are realized; one end of the outer sleeve of the drill boom is hinged to the upper part of the drill boom rotary seat I, the cylinder body of the telescopic oil cylinder of the drill boom is hinged to the outer sleeve of the drill boom, the telescopic rod of the telescopic oil cylinder of the drill boom is hinged to the inner sleeve of the drill boom, and the outer sleeve of the drill boom is matched with the inner sleeve of the drill boom for use; the outer sleeve of the support rod is hinged to the lower portion of the drill boom rotary seat I, the cylinder body of the support rod telescopic cylinder is hinged to the outer sleeve of the support rod, the telescopic rod of the support rod telescopic cylinder is hinged to the inner sleeve of the support rod, and the outer sleeve of the support rod is matched with the inner sleeve of the support rod; the cylinder body of the drill boom support oil cylinder is hinged with the drill boom rotary seat I, the telescopic rod of the drill boom support oil cylinder is hinged with the bottom end of the drill boom outer sleeve, and the drill boom outer sleeve is driven to lift up and down through the telescopic movement of the drill boom support oil cylinder, so that drilling operations in different height ranges are realized; the drill boom control part is arranged on the upper end surface of the drill boom outer sleeve, so that a person can conveniently control the action of the on-board drilling machine; the rear end face of the drill boom revolving seat II is connected with one end of the drill boom inner sleeve and one end of the support rod inner sleeve, and the front end face of the drill boom revolving seat II is hinged with the swing oil cylinder fixing plate; the small platform is arranged on the side surface of the swing oil cylinder fixing plate, the cylinder body of the drill boom rotating oil cylinder I is hinged with the front end of the drill boom rotating seat II, the telescopic rod of the drill boom rotating oil cylinder I is hinged with the swing oil cylinder fixing plate, and the swing oil cylinder fixing plate is driven to rotate left and right by the telescopic rod of the drill boom rotating oil cylinder I for a certain angle, so that the on-board drilling machine can quickly and accurately position various mechanical drilling holes; the bottom end of the 65 swing cylinder is fixed on the swing cylinder fixing plate, the other end of the 65 swing cylinder is connected with the 42 cylinder fixing seat, the 65 swing cylinder can rotate left and right by 270 degrees, the bottom end of the 42 swing cylinder is fixed on the 42 cylinder fixing seat, the other end of the 65 swing cylinder is connected with the machine-mounted drilling machine, the 42 swing cylinder can rotate back and forth by 180 degrees, and 360-degree omnibearing drilling positions can be positioned through the front, back, left and right rotation of the 65 swing cylinder and the 42 swing cylinder, so that the machine-mounted drilling machine is more flexible in operation and more comprehensive in function.
The front stabilizer comprises a shovel plate, a stabilizer bracket oil cylinder, a top plate, a right telescopic inner sleeve, a left telescopic inner sleeve, a front stabilizer right telescopic oil cylinder and a front stabilizer left telescopic oil cylinder; the shovel plate is arranged on the front end face of the stabilizing frame, can be lifted and fallen, and is convenient for loading materials; one end of the stabilizing frame is hinged with the front connecting beam of the machine body part, and the other end of the stabilizing frame is hinged with the telescopic rod of the stabilizing frame oil cylinder, and the structure of the stabilizing frame is a front sleeve type and a rear sleeve type; the cylinder body of the front stable right telescopic cylinder or the front stable left telescopic cylinder is hinged with the stabilizing frame, the telescopic rod of the front stable right telescopic cylinder or the front stable left telescopic cylinder is hinged with the right telescopic inner sleeve or the left telescopic inner sleeve, and the right telescopic inner sleeve or the left telescopic inner sleeve can extend outwards or retract under the telescopic action of the telescopic rod, so that the supporting range of the drill carriage can be conveniently adjusted; the top plates are respectively arranged at the left side and the right side of the bottom ends of the right telescopic inner sleeve and the left telescopic inner sleeve; the cylinder body of the stable support oil cylinder is hinged with the front connecting beam of the machine body part, the telescopic rod of the stable support oil cylinder is hinged with the stable support, and the action of lifting or sleeping the stable support upwards can be realized under the action of the stable support oil cylinder.
The front support comprises a support connecting frame, a support adjusting oil cylinder, a support integral telescopic outer sleeve, a support integral telescopic oil cylinder, a support integral telescopic inner sleeve, a top plate supporting outer sleeve, a top plate supporting oil cylinder, a top plate supporting inner sleeve, a top beam telescopic outer sleeve, a top beam telescopic oil cylinder and a top beam telescopic inner sleeve; one end of the support integral telescopic outer sleeve is hinged with the support connecting frame, the cylinder body of the support adjusting cylinder is hinged with the support connecting frame, the telescopic rod of the support adjusting cylinder is hinged with the support integral telescopic outer sleeve, and the front support inclination angle can be adjusted under the pushing of the support adjusting cylinder; the support integral telescopic inner sleeve is nested in the support integral telescopic outer sleeve, the support integral telescopic cylinder body is hinged with the support integral telescopic outer sleeve, the telescopic rod of the support integral telescopic cylinder is hinged with the support integral telescopic inner sleeve, and the support integral telescopic inner sleeve is driven by the telescopic action of the support integral telescopic cylinder to realize telescopic action; the top beam telescopic sleeve is arranged at the top end of the supporting integral telescopic sleeve, the top beam telescopic sleeve is nested in the top beam telescopic sleeve, the cylinder bodies of the two top beam telescopic cylinders are hinged with the top beam telescopic sleeve, the top beam telescopic cylinder telescopic rods are hinged with the top beam telescopic sleeve, the top beam telescopic inner sleeve is driven by the top beam telescopic cylinders to realize telescopic movement, the top plate supporting outer sleeve is arranged on the top beam telescopic sleeve, the top plate supporting inner sleeve is nested in the top plate supporting outer sleeve, the top plate supporting cylinder body is hinged with the top plate supporting outer sleeve, the top plate supporting cylinder telescopic rods are hinged with the top plate supporting inner sleeve, and the top plate supporting inner sleeve is driven to stretch through the top plate supporting cylinder telescopic operation.
Preferably, the vacuum electromagnetic starter is a mining explosion-proof and intrinsically safe vacuum electromagnetic starter.
The multifunctional impact hydraulic drill carriage suitable for rock roadway working face construction adopts the technical scheme, is suitable for rock roadway working face blasting and supporting operation, is matched with mining equipment such as a slag raking machine, a belt conveyor, a scraper machine and the like to form a set of rapid tunneling system for tunneling, supporting and transporting, can be used for constructing a full-section blasting hole, and also can be used for constructing anchor rod and anchor cable holes of a top plate and a side wall, has multiple functions, simplifies the equipment quantity, reduces the investment, furthest simplifies labor organization, reduces auxiliary time and greatly improves roadway tunneling efficiency. The front supporting mechanism capable of lifting is arranged in front of the drill carriage body, so that auxiliary operators of the machine set can work in temporary support, overhead operation is avoided, and personal safety of operators is guaranteed. Compared with the existing equipment, the invention has the following advantages:
(1) The drill carriage is provided with two sets of impact type multifunctional airborne drilling machines, and is provided with a hydraulic rock drilling motor, so that when the hardness of a rock stratum is high, the drilling speed is increased through impact and large torque rotation, and the construction efficiency is high;
(2) The two sets of drilling arms adopt a cantilever mechanism, the two worn swinging oil cylinders can realize 360-degree omnibearing rotation of the device, and the positioning of the tunnel roof and the anchor rod and anchor cable holes is satisfied through the rotation of the drilling arms in the horizontal and vertical directions and the telescopic adjustment of the drilling arms;
(3) The adjusting mechanism is added at the joint of the propeller device, so that the positioning of the head-on full-section blast hole can be realized through the adjustment of the oil cylinder, the propelling and compensating stroke of the propeller is increased, and when the head-on blast hole is constructed, a drill rod is not required to be replaced, so that the construction efficiency is improved;
(4) The drill boom is controlled by electrohydraulic remote control, so that the degree of automation is high, the operation is simpler and more convenient, the labor intensity of operators is reduced by remote control, and the operation environment of the operators is improved;
(5) The drill carriage is suitable for the rapid tunneling working face of the rock roadway, and the rapid tunneling process of tunneling, supporting and transporting, and can also be used in mines and engineering tunnels.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the body of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the lifting part in FIG. 1;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of the drill arm of FIG. 1;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a schematic view of the front stabilization construct of FIG. 1;
Fig. 10 is a left side view of fig. 9;
FIG. 11 is a top view of FIG. 9;
FIG. 12 is a schematic view of the front support of FIG. 1;
Fig. 13 is a top view of fig. 12.
Detailed Description
As shown in fig. 1 and 2, the multifunctional impact hydraulic drill carriage suitable for rock roadway working face construction in this embodiment is characterized in that: comprises a machine body part 1, a lifting part 2, two drill arm parts 3, a front stabilizer 4, a front support 5, an electric system 6 and a hydraulic system 7; the lifting part 2 is arranged at the middle position on the upper surface of the machine body part 1, the two drill arm parts 3 are symmetrically arranged on the left side and the right side on the upper surface of the lifting part 2, the front stabilizer 4 is arranged at the front end of the machine body part 1, the front support 5 is arranged at the front end of the lifting part 2, the electric system 6 is arranged on the right rear side of the machine body part 1, the hydraulic system 7 is arranged in the middle of the left side of the machine body part 1 and is positioned behind the two drill arm parts 3.
As shown in fig. 3 to 4, the machine body 1 comprises a front connecting beam 1-1, a rear connecting beam 1-2, two tracks 1-3, a platform 1-4, a mining explosion-proof and intrinsically safe vacuum electromagnetic starter 1-5 and a cable reeling device 1-6; the top end of the front connecting beam 1-1 is connected with the front end of the bottom surface of the platform 1-4, the top end of the rear connecting beam 1-2 is connected with the rear end of the bottom surface of the platform 1-4, and the two side surfaces of the front connecting beam 1-1 and the rear connecting beam 1-2 are fixed on the crawler belt 1-3; the two tracks 1-3 are respectively and symmetrically arranged at the left side and the right side of the front connecting beam 1-1 and the rear connecting beam 1-2; the mining explosion-proof and intrinsically safe vacuum electromagnetic starter 1-5 is arranged on the right rear side of the upper surface of the platform 1-4, so that the starting and stopping of the electrical system 6 are facilitated; the cable winding device 1-6 is arranged on the left rear side of the upper surface of the platform 1-4, so that winding and unwinding of cables are facilitated.
As shown in fig. 5 and 6, the lifting part 2 comprises a swinging oil cylinder assembly 2-1, a lifting oil cylinder i 2-2, a lifting oil cylinder seat i 2-3, a link mechanism 2-4, a lifting frame 2-5, a lifting oil cylinder seat ii 2-6, a lifting oil cylinder ii 2-7, a turning plate 2-8, a lifting platform 2-9, a turning plate assembly 2-10 and a drilling arm fixing seat 2-11; the lifting oil cylinder seat I2-3 and the lifting oil cylinder seat II 2-6 are arranged on the platform 1-4 of the machine body part 1; the cylinder body of the lifting cylinder I2-2 is hinged with the lifting cylinder seat I2-3, and the telescopic rod of the lifting cylinder I2-2 is hinged with the lifting frame 2-5; the lifting oil cylinders II 2-7 are arranged in a bilateral symmetry manner; the cylinder body of the lifting cylinder II 2-7 is hinged with the lifting cylinder seat II 2-6, and the telescopic rod of the lifting cylinder II 2-7 is hinged with the drill boom fixing seat 2-11; one end of the link mechanism 2-4 is arranged on the platform 1-4 of the machine body part 1, and the other end is hinged with the lifting frame 2-5; the connecting rod mechanism 2-4 and the lifting frame 2-5 are driven to lift up and down by the expansion and contraction of the lifting oil cylinder I2-2 and the lifting oil cylinder II 2-7, so that the mechanical drilling construction requirements of different heights are met; the number of the lifting platforms 2-9 is two, and the lifting platforms are symmetrically fixed on the two side surfaces of the lifting frame 2-5; the swing oil cylinder assemblies 2-1 are arranged in a bilateral symmetry way, the cylinder body of the swing oil cylinder assemblies 2-1 is connected with the lifting platform 2-9, the rotating shaft of the swing oil cylinder assemblies 2-1 is connected with the turning plate 2-8, and under the action of the swing oil cylinder assemblies 2-1, the turning plate 2-8 can be turned outwards, so that the standing area is increased, and the operation of personnel is facilitated; the turning plate assemblies 2-10 are arranged symmetrically left and right and are arranged on the outer side surfaces of the lifting platforms 2-9, so that the personnel can conveniently stand; the drill boom fixing seat 2-11 is divided into two parts, which are symmetrically arranged left and right, the side surface of the drill boom fixing seat is fixedly connected with the lifting frame 2-5, and the connecting lug of the drill boom fixing seat is hinged with the lifting cylinder II 2-7 telescopic rod; the lifting part 2 can be lifted up and down under the action of the lifting oil cylinder I2-2, the lifting oil cylinder II 2-7 and the connecting rod mechanism 2-4, so that the drilling operation construction requirements of drill rigs at different heights are met.
As shown in fig. 7 to 8, the two groups of the drill arm parts 3 are symmetrically arranged on the lifting platforms 2-9 of the lifting part 2; each group of drill arm 3 consists of a drill arm rotary seat I3-1, a drill arm outer sleeve 3-2, a drill arm inner sleeve 3-3, a drill arm telescopic cylinder 3-4, a drill arm operating part 3-5, a drill arm supporting cylinder 3-6, a supporting rod outer sleeve 3-7, a supporting rod telescopic cylinder 3-8, a supporting rod inner sleeve 3-9, a drill arm rotary seat II 3-10, a swinging cylinder fixing plate 3-11, 65 swinging cylinders 3-12, 42 cylinder fixing seats 3-13, 42 swinging cylinders 3-14, an onboard drilling machine 3-15, a drill arm rotary cylinder I3-16, a small platform 3-17 and a drill arm rotary cylinder II 3-18; the drill boom revolving seat I3-1 is hinged on the drill boom fixed seat 2-11 of the lifting part 2, the cylinder body of the drill boom revolving oil cylinder II 3-18 is hinged with the lifting frame 2-5, the telescopic rod of the drill boom revolving oil cylinder II 3-18 is hinged with the drill boom revolving seat I3-1, and the drill boom revolving seat I3-1 is driven to revolve left and right around the drill boom fixed seat 2-11 by the telescopic rod of the drill boom revolving oil cylinder II 3-18, so that drilling construction operations in different width ranges are realized; one end of the outer drill arm sleeve 3-2 is hinged to the upper part of the drill arm rotary seat I3-1, a cylinder body of the telescopic drill arm oil cylinder 3-4 is hinged to the outer drill arm sleeve 3-2, a telescopic rod of the telescopic drill arm oil cylinder 3-4 is hinged to the inner drill arm sleeve 3-3, and the outer drill arm sleeve 3-2 is matched with the inner drill arm sleeve 3-3 for use; the outer sleeve 3-7 of the support rod is hinged to the lower portion of the drill boom revolving seat I3-1, a cylinder body of the telescopic cylinder 3-8 of the support rod is hinged to the outer sleeve 3-7 of the support rod, a telescopic rod of the telescopic cylinder 3-8 of the support rod is hinged to the inner sleeve 3-9 of the support rod, and the outer sleeve 3-7 of the support rod and the inner sleeve 3-9 of the support rod are matched for use; the cylinder body of the drill boom support cylinder 3-6 is hinged with the drill boom rotary seat I3-1, the telescopic rod of the drill boom support cylinder 3-6 is hinged with the bottom end of the drill boom outer sleeve 3-2, and the drill boom outer sleeve 3-2 is driven to lift up and down through telescopic movement of the drill boom support cylinder 3-6, so that drilling operations in different height ranges are realized; the drill boom control part 3-5 is arranged on the upper end surface of the drill boom outer sleeve 3-2, so that a person can conveniently control the action of the on-board drilling machine 3-15; the rear end face of the drill boom revolving seat II 3-10 is connected with one end of the drill boom inner sleeve 3-3 and one end of the support rod inner sleeve 3-9, and the front end face of the drill boom revolving seat II 3-10 is hinged with the swing oil cylinder fixing plate 3-11; the small platform 3-17 is arranged on the side surface of the swing cylinder fixing plate 3-11, the cylinder body of the drill boom rotating cylinder I3-16 is hinged with the front end of the drill boom rotating seat II 3-10, the telescopic rod of the drill boom rotating cylinder I3-16 is hinged with the swing cylinder fixing plate 3-11, and the swing cylinder fixing plate 3-11 is driven to rotate left and right by the telescopic rod of the drill boom rotating cylinder I3-16 by a certain angle, so that the on-board drilling machine 3-15 can quickly and accurately position various mechanical drilling holes; the bottom end of the 65 swing cylinder 3-12 is fixed on the swing cylinder fixing plate 3-11, the other end is connected with the 42 cylinder fixing seat 3-13, the 65 swing cylinder 3-12 can rotate 270 degrees left and right, the bottom end of the 42 swing cylinder 3-14 is fixed on the 42 cylinder fixing seat 3-13, the other end is connected with the onboard drilling machine 3-15, the 42 swing cylinder 3-14 can rotate 180 degrees back and forth, the 360-degree omnibearing drilling position can be positioned through the front and back rotation of the 65 swing cylinder 3-12 and the 42 swing cylinder 3-14, and the operation of the onboard drilling machine 3-15 is more flexible and the function is more comprehensive.
The machine-mounted drilling machine 3-15 adopts a structure of which the patent name is 'an impact type multifunctional machine-mounted drilling machine'. The structure adopts the impact rock drilling machine, is matched with the integrated oil way and the modularized structure control, has the advantages of flexible operation, convenient control, high working efficiency, high drilling speed, good working environment and the like, and solves the difficult problems of high-efficiency anchor rod support and tunneling of the hard rock tunnel by matching the machine-mounted drilling machine with a drill carriage or a tunneling machine.
As shown in fig. 9 to 11, the front stabilizer 4 comprises a shovel plate 4-1, a stabilizer frame 4-2, a stabilizer bracket oil cylinder 4-3, a top plate 4-4, a right telescopic inner sleeve 4-5, a left telescopic inner sleeve 4-6, a front stabilizer right telescopic oil cylinder 4-7 and a front stabilizer left telescopic oil cylinder 4-8; the shovel plate 4-1 is arranged on the front end face of the stabilizing frame 4-2, can be lifted and fallen, and is convenient for loading materials; one end of the stabilizing frame 4-2 is hinged with the front connecting beam 1-1 of the machine body part 1, and the other end is hinged with a telescopic rod of the stabilizing frame oil cylinder 4-3, and the structure of the stabilizing frame is a front-back sleeve type; the cylinder body of the front stable right telescopic cylinder 4-7 or the front stable left telescopic cylinder 4-8 is hinged with the stabilizing frame 4-2, the telescopic rod of the front stable right telescopic cylinder is hinged with the right telescopic inner sleeve 4-5 or the left telescopic inner sleeve 4-6, and the right telescopic inner sleeve 4-5 or the left telescopic inner sleeve 4-6 can extend outwards or retract under the telescopic action of the telescopic rod, so that the supporting range of the drill carriage is convenient to adjust; the top plates 4-4 are respectively arranged at the left side and the right side of the bottom ends of the right telescopic inner sleeve 4-5 and the left telescopic inner sleeve 4-6; the cylinder body of the stable support cylinder 4-3 is hinged with the front connecting beam 1-1 of the machine body part 1, the telescopic rod of the stable support cylinder 4-3 is hinged with the stable support 4-2, and under the action of the stable support cylinder 4-3, the action of lifting the stable support 4-2 upwards or sleeping downwards can be realized.
As shown in fig. 12 to 13, the front support 5 comprises a support connecting frame 5-1, a support adjusting cylinder 5-2, a support whole telescopic outer sleeve 5-3, a support whole telescopic cylinder 5-4, a support whole telescopic inner sleeve 5-5, a top plate support outer sleeve 5-6, a top plate support cylinder 5-7, a top plate support inner sleeve 5-8, a top beam telescopic outer sleeve 5-9, a top beam telescopic cylinder 5-10 and a top beam telescopic inner sleeve 5-11; one end of the support integral telescopic outer sleeve 5-3 is hinged with the support connecting frame 5-1, the cylinder body of the support adjusting cylinder 5-2 is hinged with the support connecting frame 5-1, the telescopic rod of the support adjusting cylinder 5-2 is hinged with the support integral telescopic outer sleeve 5-3, and the inclination angle of the front support 5 can be adjusted under the pushing of the support adjusting cylinder 5-2; the supporting integral telescopic inner sleeve 5-5 is nested in the supporting integral telescopic outer sleeve 5-3, the cylinder body of the supporting integral telescopic cylinder 5-4 is hinged with the supporting integral telescopic outer sleeve 5-3, the telescopic rod of the supporting integral telescopic cylinder 5-4 is hinged with the supporting integral telescopic inner sleeve 5-5, and the supporting integral telescopic inner sleeve 5-5 is driven by the telescopic action of the supporting integral telescopic cylinder 5-4 to realize telescopic action; the top beam telescopic sleeves 5-9 are arranged at the top ends of the supporting integral telescopic sleeves 5-5, the top beam telescopic sleeves 5-11 are nested in the top beam telescopic sleeves 5-9, the cylinder bodies of the two top beam telescopic cylinders 5-10 are hinged with the top beam telescopic sleeves 5-9, the telescopic rods of the top beam telescopic cylinders 5-10 are hinged with the top beam telescopic sleeves 5-11, the top beam telescopic sleeves 5-11 are driven to realize telescopic movement by telescopic motion of the top beam telescopic cylinders 5-10, the top plate supporting outer sleeves 5-6 are arranged on the top beam telescopic sleeves 5-9, the top plate supporting inner sleeves 5-8 are nested in the top plate supporting outer sleeves 5-6, the cylinder bodies of the top plate supporting cylinders 5-7 are hinged with the top plate supporting outer sleeves 5-6, the telescopic rods of the top plate supporting cylinders 5-7 are hinged with the top plate supporting inner sleeves 5-8, the top plate supporting inner sleeves 5-8 are driven to be telescopic by telescopic motion of the top plate supporting cylinders 5-7, temporary supporting of a roadway is realized, and the personal safety of operators is guaranteed.
Claims (4)
1. A multifunctional impact type hydraulic drill carriage suitable for rock roadway working face construction is characterized in that: comprises a machine body part (1), a lifting part (2), two drill arm parts (3), a front stabilizer (4), a front support (5), an electric system (6) and a hydraulic system (7); the lifting part (2) is arranged at the middle position on the upper surface of the machine body part (1), the two drill arm parts (3) are symmetrically arranged at the left side and the right side on the upper surface of the lifting part (2), the front stabilizer (4) is arranged at the front end of the machine body part (1), the front support (5) is arranged at the front end of the lifting part (2), the electric system (6) is arranged at the right rear side of the machine body part (1), the hydraulic system (7) is arranged at the middle of the left side of the machine body part (1) and is positioned behind the two drill arm parts (3);
The lifting part (2) comprises a swinging oil cylinder assembly (2-1), a lifting oil cylinder I (2-2), a lifting oil cylinder seat I (2-3), a connecting rod mechanism (2-4), a lifting frame (2-5), a lifting oil cylinder seat II (2-6), a lifting oil cylinder II (2-7), a turning plate (2-8), a lifting platform (2-9), a turning plate assembly (2-10) and a drilling boom fixing seat (2-11); the lifting oil cylinder seat I (2-3) and the lifting oil cylinder seat II (2-6) are arranged on a platform (1-4) of the machine body part (1); the cylinder body of the lifting cylinder I (2-2) is hinged with the lifting cylinder seat I (2-3), and the telescopic rod of the lifting cylinder I (2-2) is hinged with the lifting frame (2-5); the lifting oil cylinders II (2-7) are arranged in a bilateral symmetry way; the cylinder body of the lifting cylinder II (2-7) is hinged with the lifting cylinder seat II (2-6), and the telescopic rod of the lifting cylinder II (2-7) is hinged with the drill boom fixing seat (2-11); one end of the connecting rod mechanism (2-4) is arranged on the platform (1-4) of the machine body part (1), and the other end is hinged with the lifting frame (2-5); the connecting rod mechanism (2-4) and the lifting frame (2-5) are driven to lift up and down by the expansion and contraction of the lifting oil cylinder I (2-2) and the lifting oil cylinder II (2-7); the number of the lifting platforms (2-9) is two, and the lifting platforms are symmetrically fixed on the two side surfaces of the lifting frame (2-5) left and right; the swing oil cylinder assemblies (2-1) are arranged in a bilateral symmetry way, a cylinder body of each swing oil cylinder assembly (2-1) is connected with the lifting platform (2-9), a rotating shaft of each swing oil cylinder assembly (2-1) is connected with the corresponding turning plate (2-8), and the turning plates (2-8) can be turned outwards under the action of the corresponding swing oil cylinder assemblies (2-1); the turning plate assemblies (2-10) are arranged symmetrically left and right and are arranged on the outer side face of the lifting platform (2-9); the drill boom fixing seat (2-11) is arranged symmetrically left and right, the side surface of the drill boom fixing seat is fixedly connected with the lifting frame (2-5), and the connecting lug of the drill boom fixing seat is hinged with the telescopic rod of the lifting oil cylinder II (2-7); the lifting part (2) can be lifted up and down under the action of the lifting oil cylinder I (2-2), the lifting oil cylinder II (2-7) and the connecting rod mechanism (2-4);
The two groups of the drill arm parts (3) are symmetrically arranged on the lifting platforms (2-9) of the lifting part (2) left and right; each group of drill arm parts (3) consists of a drill arm rotary seat I (3-1), a drill arm outer sleeve (3-2), a drill arm inner sleeve (3-3), a drill arm telescopic cylinder (3-4), a drill arm operating part (3-5), a drill arm supporting cylinder (3-6), a support rod outer sleeve (3-7), a support rod telescopic cylinder (3-8), a support rod inner sleeve (3-9), a drill arm rotary seat II (3-10), a swing cylinder fixing plate (3-11), a 65 swing cylinder (3-12), a 42 cylinder fixing seat (3-13), a 42 swing cylinder (3-14), an onboard drilling machine (3-15), a drill arm rotary cylinder I (3-16), a small platform (3-17) and a drill arm rotary cylinder II (3-18); the drill boom revolving seat I (3-1) is hinged on a drill boom fixed seat (2-11) of the lifting part (2), a cylinder body of the drill boom revolving oil cylinder II (3-18) is hinged with the lifting frame (2-5), a telescopic rod of the drill boom revolving oil cylinder II (3-18) is hinged with the drill boom revolving seat I (3-1), and the drill boom revolving seat I (3-1) is driven to revolve left and right around the drill boom fixed seat (2-11) through the telescopic of the drill boom revolving oil cylinder II (3-18); one end of the outer drill arm sleeve (3-2) is hinged to the upper portion of the drill arm rotary seat I (3-1), a cylinder body of the telescopic drill arm oil cylinder (3-4) is hinged to the outer drill arm sleeve (3-2), a telescopic rod of the telescopic drill arm oil cylinder (3-4) is hinged to the inner drill arm sleeve (3-3), and the outer drill arm sleeve (3-2) is matched with the inner drill arm sleeve (3-3) for use; the outer sleeve (3-7) of the support rod is hinged to the lower portion of the drill boom rotary seat I (3-1), a cylinder body of the telescopic cylinder (3-8) of the support rod is hinged to the outer sleeve (3-7) of the support rod, a telescopic rod of the telescopic cylinder (3-8) of the support rod is hinged to the inner sleeve (3-9) of the support rod, and the outer sleeve (3-7) of the support rod is matched with the inner sleeve (3-9) of the support rod; the cylinder body of the drill boom support cylinder (3-6) is hinged with the drill boom rotary seat I (3-1), the telescopic rod of the drill boom support cylinder (3-6) is hinged with the bottom end of the drill boom outer sleeve (3-2), and the drill boom outer sleeve (3-2) is driven to lift up and down through the telescopic movement of the drill boom support cylinder (3-6); the drill boom control part (3-5) is arranged on the upper end surface of the drill boom outer sleeve (3-2); the rear end face of the drill boom rotary seat II (3-10) is connected with one end of the drill boom inner sleeve (3-3) and one end of the support rod inner sleeve (3-9), and the front end face of the drill boom rotary seat II (3-10) is hinged with the swing oil cylinder fixing plate (3-11); the small platform (3-17) is arranged on the side surface of the swing oil cylinder fixing plate (3-11), the cylinder body of the drill boom rotating oil cylinder I (3-16) is hinged with the front end of the drill boom rotating seat II (3-10), the telescopic rod of the drill boom rotating oil cylinder I (3-16) is hinged with the swing oil cylinder fixing plate (3-11), and the swing oil cylinder fixing plate (3-11) is driven to rotate left and right by the telescopic action of the drill boom rotating oil cylinder I (3-16); the bottom end of the 65 swing cylinder (3-12) is fixed on the swing cylinder fixing plate (3-11), the other end of the 65 swing cylinder is connected with the 42 cylinder fixing seat (3-13), the 65 swing cylinder (3-12) can rotate 270 degrees left and right, the bottom end of the 42 swing cylinder (3-14) is fixed on the 42 cylinder fixing seat (3-13), the other end of the 65 swing cylinder is connected with the airborne drilling machine (3-15), the 42 swing cylinder (3-14) can rotate 180 degrees back and forth, and 360 degrees of all-round drilling positions can be positioned through the front and back left and right rotation of the 65 swing cylinder (3-12) and the 42 swing cylinder (3-14);
the front stabilizer (4) comprises a shovel plate (4-1), a stabilizer (4-2), a stabilizer bracket oil cylinder (4-3), a top plate (4-4), a right telescopic inner sleeve (4-5), a left telescopic inner sleeve (4-6), a front stabilizer right telescopic oil cylinder (4-7) and a front stabilizer left telescopic oil cylinder (4-8); the shovel plate (4-1) is arranged on the front end face of the stabilizing frame (4-2) and can be lifted and fallen; one end of the stabilizing frame (4-2) is hinged with a front connecting beam (1-1) of the machine body part (1), and the other end of the stabilizing frame is hinged with a telescopic rod of the stabilizing frame oil cylinder (4-3), and the structure of the stabilizing frame is a front-back sleeve type; the cylinder body of the front stable right telescopic cylinder (4-7) or the front stable left telescopic cylinder (4-8) is hinged with the stabilizing frame (4-2), the telescopic rod of the front stable right telescopic cylinder is hinged with the right telescopic inner sleeve (4-5) or the left telescopic inner sleeve (4-6), and the right telescopic inner sleeve (4-5) or the left telescopic inner sleeve (4-6) can extend outwards or retract under the telescopic action of the telescopic rod; the top plates (4-4) are respectively arranged at the left side and the right side of the bottom ends of the right telescopic inner sleeve (4-5) and the left telescopic inner sleeve (4-6); the cylinder body of the stable support oil cylinder (4-3) is hinged with the front connecting beam (1-1) of the machine body part (1), the telescopic rod of the stable support oil cylinder (4-3) is hinged with the stable support (4-2), and the action of lifting the stable support (4-2) upwards or sleeping downwards can be realized under the action of the stable support oil cylinder (4-3).
2. The multifunctional impact hydraulic drill carriage suitable for rock roadway working face construction according to claim 1, which is characterized in that: the machine body part (1) comprises a front connecting beam (1-1), a rear connecting beam (1-2), 2 tracks (1-3), a platform (1-4), a vacuum electromagnetic starter (1-5) and a cable winding device (1-6); the top end of the front connecting beam (1-1) is connected with the front end of the bottom surface of the platform (1-4), the top end of the rear connecting beam (1-2) is connected with the rear end of the bottom surface of the platform (1-4), and the two side surfaces of the front connecting beam (1-1) and the rear connecting beam (1-2) are fixed on the crawler belt (1-3); the 2 tracks (1-3) are respectively and symmetrically arranged at the left side and the right side of the front connecting beam (1-1) and the rear connecting beam (1-2); the vacuum electromagnetic starter (1-5) is arranged on the right rear side of the upper surface of the platform (1-4) so as to facilitate the start and stop of the electrical system (6); the cable winding device (1-6) is arranged on the left rear side of the upper surface of the platform (1-4) so as to be convenient for winding and unwinding the cable.
3. The multifunctional impact hydraulic drill carriage suitable for rock roadway working face construction according to claim 1, which is characterized in that: the front support (5) comprises a support connecting frame (5-1), a support adjusting oil cylinder (5-2), a support integral telescopic outer sleeve (5-3), a support integral telescopic oil cylinder (5-4), a support integral telescopic inner sleeve (5-5), a top plate supporting outer sleeve (5-6), a top plate supporting oil cylinder (5-7), a top plate supporting inner sleeve (5-8), a top beam telescopic outer sleeve (5-9), a top beam telescopic oil cylinder (5-10) and a top beam telescopic inner sleeve (5-11); one end of the supporting integral telescopic outer sleeve (5-3) is hinged with the supporting connecting frame (5-1), a cylinder body of the supporting adjusting cylinder (5-2) is hinged with the supporting connecting frame (5-1), a telescopic rod of the supporting adjusting cylinder (5-2) is hinged with the supporting integral telescopic outer sleeve (5-3), and the inclination angle of the front support (5) can be adjusted under the pushing of the supporting adjusting cylinder (5-2); the supporting integral telescopic inner sleeve (5-5) is nested in the supporting integral telescopic outer sleeve (5-3), the cylinder body of the supporting integral telescopic cylinder (5-4) is hinged with the supporting integral telescopic outer sleeve (5-3), the telescopic rod of the supporting integral telescopic cylinder (5-4) is hinged with the supporting integral telescopic inner sleeve (5-5), and the supporting integral telescopic inner sleeve (5-5) is driven by the telescopic action of the supporting integral telescopic cylinder (5-4) to realize telescopic action; the top beam telescopic sleeve (5-9) is arranged at the top end of the supporting integral telescopic sleeve (5-5), the top beam telescopic sleeve (5-11) is nested in the top beam telescopic sleeve (5-9), the cylinder bodies of the two top beam telescopic cylinders (5-10) are hinged with the top beam telescopic sleeve (5-9), the telescopic rods of the top beam telescopic cylinders (5-10) are hinged with the top beam telescopic sleeve (5-11), the top beam telescopic sleeve (5-11) is driven to realize telescopic movement through the telescopic of the top beam telescopic cylinder (5-10), the top plate telescopic sleeve (5-6) is arranged on the top beam telescopic sleeve (5-9), the top plate telescopic sleeve (5-8) is nested in the top plate telescopic sleeve (5-6), the cylinder bodies of the top plate telescopic cylinders (5-7) are hinged with the top plate telescopic sleeve (5-6), and the top plate telescopic rods of the top plate telescopic cylinders (5-7) are hinged with the top plate telescopic sleeve (5-8) and are driven to stretch through the telescopic drive of the top plate telescopic cylinders (5-7).
4. The multifunctional impact hydraulic drill carriage suitable for rock roadway working face construction according to claim 2, characterized in that: the vacuum electromagnetic starter (1-5) is a mining explosion-proof and intrinsically safe vacuum electromagnetic starter (1-5).
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| CN112196512A (en) * | 2020-10-29 | 2021-01-08 | 山东科技大学 | Intelligent drilling pressure relief device for mine and use method thereof |
| CN113090299B (en) * | 2021-04-30 | 2022-11-18 | 中煤科工开采研究院有限公司 | Drilling and grouting integrated anchor rod drill carriage |
| CN114233177B (en) * | 2021-12-14 | 2024-03-22 | 唐山首钢马兰庄铁矿有限责任公司 | Pneumatic impact rock drilling through hole device for underground medium-length hole blast hole |
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