CN107740691A - A kind of advance cutting hydraulic splitting machine for mine blasting - Google Patents

A kind of advance cutting hydraulic splitting machine for mine blasting Download PDF

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Publication number
CN107740691A
CN107740691A CN201711071290.9A CN201711071290A CN107740691A CN 107740691 A CN107740691 A CN 107740691A CN 201711071290 A CN201711071290 A CN 201711071290A CN 107740691 A CN107740691 A CN 107740691A
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CN
China
Prior art keywords
baffle plate
protection baffle
protection
main body
body cover
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.)
Withdrawn
Application number
CN201711071290.9A
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Chinese (zh)
Inventor
吴淑瑜
王一
姚瑶
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 CN201711071290.9A priority Critical patent/CN107740691A/en
Publication of CN107740691A publication Critical patent/CN107740691A/en
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C37/00Other methods or devices for dislodging with or without loading
    • E21C37/06Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/08Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C47/00Machines for obtaining or the removal of materials in open-pit mines
    • E21C47/10Machines for obtaining or the removal of materials in open-pit mines for quarrying stone, sand, gravel, or clay

Abstract

The present invention provides a kind of advance cutting hydraulic splitting machine for mine blasting, including main body cover, No.1 protection baffle plate and No. two protection baffle plates;The bottom outside of the main body cover is further fixedly arranged on a magnetic baffle plate deck.Protect the setting of baffle plate, be advantageous to the convenience used, during using the present apparatus, No.1 protection baffle plate is arranged on to the opposite side of magnetic baffle plate deck, and No.1 protection baffle plate projection is set to be embedded into the groove of No. two protection baffle plate sides, at this moment the hemispherical projections of the top and bottom of No.1 protection baffle plate projection can be mutually fitted together to the hemispherical groove in the groove of No. two protection baffle plate sides, make the connection of protection baffle plate more firm, burst apart when being cleaved from the rock seam small crushed stone and fine sand can be protected baffle plate and No. two protection baffles by No.1, avoid damaging the body of staff, and can be by protecting the toughened glass window on baffle plate to observe working condition, using more convenient.

Description

A kind of advance cutting hydraulic splitting machine for mine blasting
Technical field
The invention belongs to exploitation of stone technical field, more particularly to a kind of advance cutting hydraulic pressure for mine blasting to split Split machine.
Background technology
China's stone digging quantity is more, but normalization is built, the mine of mechanical mining and few, and most of mines are also It is to be exploited using pool mouth formula original method, this method is extremely low into waste rate.The data shows that pool mouth formula blasting procedure exploits stone material, The general resource for the good mining area of mechanization degree, being not more than 10% all between 4%-6%, being left 90% of its Raw material ratio All become barren rock disintegrating slag in recovery process.It is well known that the non-renewable resources that stone material belongs in natural resources, are more exploited It is fewer, so limited rock material resource must be treasured.With the improvement of technical conditions, start to use hydraulic pressure in present high-end market Splitting machine, its appearance improve operating efficiency, improve safety coefficient, have saved the energy, substantially increase stone mining rate.
Such as the patent of Application No. 201510600583.6, disclose a kind of car overloading rock cleavage of hand propelled one dress Put, including splitting machine support frame, it is installed on in graduated litter and rotary shaft;Swivel mount is installed on graduated litter On;The lower end of swivel mount and rotary shaft are arranged in the lower support arm of vehicle frame after being fixed together;The upper end of swivel mount is provided with fixed Position hole can be fixed by the upper support arm of alignment pin and vehicle frame;Air leg is installed together with pneumatic pick by standard connector, whole Body is arranged on splitting machine support frame;Present apparatus purpose is to provide a kind of efficient rock cleavage equipment, split with improving worker Split the efficiency of rock;On the other hand, this car overloading rock cleavage device, five sets of cleaving mechanism are equipped with a chassis, this Five sets of cleaving mechanism can work simultaneously;And the distance between cleaving mechanism can be adjusted on litter as needed, again may be used With the splitting angle according to regulating working conditions splitting machine, realizing both can vertically cleave rock, can tilt certain angle again and split Split rock;Front-wheel of the present invention employs universal wheel, easily pushing meanss can be manually accurately positioned to specified location, realization;This Device can also be realized to rock-boring function, so that the present invention is more with practical value pneumatic pick rapid translating into air drill.
Such as patent of Application No. 201110230071.7 again, discloses a kind of splitting machine, and it includes main pistol grip, handle Connecting rod, inlet nozzle, hydraulic fluid chamber, piston, main body cover, piston rod, jacking block, No.1 protection baffle plate, spring fix spiral shell button, bullet Spring, splitting block, magnetic baffle plate deck, magnetic baffle plate fixture block, auxiliary gripping handle, toughened glass window, No. two protection baffle plates, No.1 protection Baffle plate projection and hydraulic tube;The top of the main body cover is installed with a main pistol grip by handle connecting rod;The master The also insertion of the top of body case is provided with an inlet nozzle, and the top side of inlet nozzle is fixedly installed a hydraulic tube;Institute The inside top for stating main body cover is fixedly installed a hydraulic fluid chamber;A work is movably set with the inside of the hydraulic fluid chamber Plug;The bottom of the piston is fixedly installed a piston rod;The bottom of the piston rod is extended in the bottom of main body cover Side;The outside side of the main body cover is installed with an auxiliary gripping handle;The two bottom sides of the main body cover are by turning Axle activity is symmetrically installed with two splitting blocks;The two bottom sides of the main body cover are also fixed spiral shell button fixed symmetrical by spring and pacified Equipped with two springs, and the bottom of spring is connected with cleaving the top outer of block;The bottom of the piston rod is installed with A piece jacking block, and the bottom of jacking block is embedded into the inner side of two splitting blocks;The bottom outside of the main body cover is also fixedly installed There is a magnetic baffle plate deck;The outside of the magnetic baffle plate deck is installed with one one by two magnetic baffle plate fixture blocks Number protection baffle plate and No. two protection baffle plates.
Find that its two patents are in combination with hydraulic splitting machine of the prior art, and it is when in use based on above-mentioned retrieval Problems be present:Existing hydraulic splitting machine needs the splitting block of bottom being inserted directly into soil when in use, then by one Name staff helps splitting machine to be operated, and in rock seam burst apart some small crushed stones and thin sometimes when being cleaved Sand, if directly collapsing staff face or intraocular may cause serious injury to staff, if allowing work Personnel wear safety goggles can make staff more uncomfortable again, also can be more inconvenient during operation.
Then, in view of this, improvement is studied for existing structure and missing, there is provided one kind is used for mine blasting and used Advance cutting hydraulic splitting machine, to reach the purpose for having more more practical value.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of advance cutting hydraulic splitting for mine blasting Machine, need the splitting block of bottom being inserted directly into soil when in use to solve existing hydraulic splitting machine, then by a work Splitting machine is helped as personnel to be operated, burst apart some small crushed stones and fine sand sometimes when being cleaved in rock seam, If directly collapsing staff face or intraocular may cause serious injury to staff, if allowing staff Wearing safety goggles can make staff more uncomfortable again, also can be more inconvenient during operation the problem of.
The present invention is used for the purpose and effect of the advance cutting hydraulic splitting machine of mine blasting, by technology hand in detail below Section is reached:
A kind of advance cutting hydraulic splitting machine for mine blasting, including housing, square hole, flat board, spring, gear Plate, fixed plate, groove, liquid injection hole, cover plate, pressure bag, pressure sensor, electronic display, connecting tube and regulator, it is described Two side bottoms of housing are provided with square hole, and housing is run through in square hole;The flat board is placed in housing, and is existed by spring supporting On the lower surface in square hole;The outside of the flat board is provided with baffle plate, and baffle plate is fixedly connected on the lateral surface in square hole;It is described The bottom of flat board has been bolted fixed plate;The top of the fixed plate opens up fluted, and the bottom of groove has been opened Liquid injection hole;The side of the fixed plate is connected with cover plate by rope;The pressure bag is located at the inner chamber of housing, and is located at flat board Top;The contact surface of the pressure bag and flat board is provided with pressure sensor;The electronic display is embedded in the upper of housing End, and be connected by wire with pressure sensor;One end of the connecting tube is connected to the sidepiece of housing, and the other end is connected with Regulator;The regulator includes rubber tube, rubber ball and valve, and the rubber ball is connected to the end of rubber tube;Institute Valve is stated to be connected on rubber tube, and it is adjacent with rubber ball.
Further, the magnetic baffle plate fixture block is the semicircular structure that side carries strip bulge.
Further, the side fixed symmetrical of the No.1 protection baffle plate is provided with two No.1 protection baffle plate projections.
Further, some hemispherical projections knots are fixedly installed at the top and bottom of the No.1 protection baffle plate projection Structure.
Further, the side fixed symmetrical of No. two protections baffle plate is provided with two and No.1 protection baffle plate projection pair The groove answered.
Further, some hemispherical groove knots are also equipped with the top and bottom of No. two protection baffle plates side groove Structure.
Further, the inner side of the No.1 protection baffle plate and No. two protection baffle plates is fixedly embedded is provided with a tempering Windowpane.
Further, the No.1 protection baffle plate and No. two protection baffle plates are the reclinate semicircle knot in cylindrical side Structure.
Compared with prior art, the present invention has the advantages that:
The setting of baffle plate is protected, is advantageous to the convenience used, during using the present apparatus, No. two protection baffle plates are first passed through magnetic Property the absorption of baffle plate fixture block installed in the side of magnetic baffle plate deck, No.1 protection baffle plate is then arranged on magnetic baffle plate deck Opposite side, and No.1 protection baffle plate projection is embedded into the groove of No. two protection baffle plate sides, at this moment No.1 protection baffle plate is convex The hemispherical projections of the top and bottom of block can be mutually fitted together to the hemispherical groove in the groove of No. two protection baffle plate sides, make guarantor Guard connection is more firm, bursts apart the small crushed stone from rock seam when being cleaved and fine sand can protect baffle plate by No.1 With No. two protection baffles, avoid damaging the body of staff, and can be by protecting the tempering on baffle plate Windowpane observes working condition, and use is more convenient.
Brief description of the drawings
Fig. 1 is the cross section structure diagram of the present invention.
Fig. 2 is the protection baffle plate overlooking the structure diagram of the present invention.
Fig. 3 is the No.1 protection baffle plate side structure schematic view of the present invention.
Fig. 4 is No. two protection baffle plate broken section structural representations of the present invention.
Fig. 5 is Fig. 3 partial enlargement structural representations of the present invention.
Fig. 6 is the partial side structural representation of the present invention.
Fig. 7 is Fig. 1 partial enlargement structural representations of the present invention.
Fig. 8 is the spring shaft side structure schematic diagram of the present invention.
In figure:Main pistol grip -1;Handle connecting rod -2;Inlet nozzle -3;Hydraulic fluid chamber -4;Piston -5;Main body cover -6;Piston Bar -7;Jacking block -8;No.1 protects baffle plate -9;Spring fixes spiral shell button -10;Spring -11;Cleave block -12;Magnetic baffle plate deck -13; Magnetic baffle plate fixture block -14;Auxiliary gripping is -15;Toughened glass window -16;No. two protection baffle plates -17;No.1 protection baffle plate projection- 18;Hydraulic tube -19.
Embodiment
The present invention is described further below in conjunction with accompanying drawing:
Embodiment:
As shown in accompanying drawing 1 to accompanying drawing 8:
The present invention provides a kind of advance cutting hydraulic splitting machine for mine blasting, including the connection of main pistol grip 1, handle Bar 2, inlet nozzle 3, hydraulic fluid chamber 4, piston 5, main body cover 6, piston rod 7, jacking block 8, No.1 protection baffle plate 9, spring fix spiral shell Button 10, spring 11, splitting block 12, magnetic baffle plate deck 13, magnetic baffle plate fixture block 14, auxiliary gripping are 15, toughened glass window 16, two Number protection baffle plate 17, No.1 protection baffle plate projection 18 and hydraulic tube 19;
The top of main body cover 6 is installed with a main pistol grip 1 by handle connecting rod 2;The top of main body cover 6 is also Insertion is provided with an inlet nozzle 3, and the top side of inlet nozzle 3 is fixedly installed a hydraulic tube 19;The top of main body cover 6 A hydraulic fluid chamber 4 is fixedly installed on the inside of portion;The inner side of hydraulic fluid chamber 4 is movably set with a piston 5;The bottom of piston 5 It is fixedly installed a piston rod 7;The bottom of piston rod 7 extends to the bottom inside of main body cover 6;The outside of main body cover 6 Side is installed with an auxiliary gripping 15;
The two bottom sides of main body cover 6 are symmetrically installed with two splitting blocks 12 by rotating shaft activity;The bottom of main body cover 6 Both sides also fix the fixed symmetrical of spiral shell button 10 by spring and are provided with two springs 11, and the bottom of spring 11 and the top of splitting block 12 It is connected on the outside of portion;
The bottom of piston rod 7 is installed with a jacking block 8, and the bottom of jacking block 8 is embedded into two and cleaves the interior of block 12 Side;The bottom outside of main body cover 6 is further fixedly arranged on a magnetic baffle plate deck 13;The outside of magnetic baffle plate deck 13 passes through Two magnetic baffle plate fixture blocks 14 are installed with a No.1 protection baffle plate 9 and No. two protection baffle plates 17.
Wherein, the magnetic baffle plate fixture block 14 is the semicircular structure that side carries strip bulge, in installation magnetic baffle plate During fixture block 14, the raised of the side of magnetic baffle plate fixture block 14 can be mutually fitted together to the groove in the outside of magnetic baffle plate deck 13, installation absorption It is more stable afterwards.
Wherein, the side fixed symmetrical of the No.1 protection baffle plate 9 is provided with two No.1 protection baffle plate projections 18, uses During the present apparatus, first No. two protection baffle plates 17 are adsorbed installed in the side of magnetic baffle plate deck 13 by magnetic baffle plate fixture block 14, Then No.1 protection baffle plate 9 is adsorbed into the opposite side installed in magnetic baffle plate deck 13 by magnetic baffle plate fixture block 14, and makes one Number protection baffle plate projection 18 is embedded into the grooves of No. two protection baffle plate 17 sides, makes No.1 protection baffle plate 9 and No. two protection gears Plate 17, which connects, more to be stablized, and will not leave gap after connecting, and can preferably stop sandstone.
Wherein, the top and bottom of the No.1 protection baffle plate projection 18 are fixedly installed some hemispherical projections structures, No.1 protection baffle plate 9 is adsorbed installed in the another of magnetic baffle plate deck 13 by magnetic baffle plate fixture block 14 during assembling protection baffle plate Side, No.1 protection baffle plate projection 18 is set to be embedded into the groove of No. two protection baffle plate 17 sides, at this moment No.1 protection baffle plate projection The hemispherical projections of 18 top and bottom can be mutually fitted together to the hemispherical groove in the groove of No. two protection baffle plate 17 sides, be made No.1 protection baffle plate 9 and No. two protection baffle plates 17 connect more firm.
Wherein, it is described No. two protection baffle plate 17 side fixed symmetrical be provided with two with No.1 protect baffle plate projection 18 it is right The groove answered, during using the present apparatus, first No. two protection baffle plates 17 are adsorbed installed in magnetic baffle plate by magnetic baffle plate fixture block 14 The side of deck 13, then No.1 protection baffle plate 9 is adsorbed installed in magnetic baffle plate deck 13 by magnetic baffle plate fixture block 14 Opposite side, and No.1 protection baffle plate projection 18 is embedded into the groove of No. two protection baffle plate 17 sides, No.1 is protected baffle plate 9 Connect with No. two protection baffle plates 17 and more stablize, and gap will not be left after connecting, can preferably stop sandstone.
Wherein, some hemispherical groove knots are also equipped with the top and bottom of No. two protections side groove of baffle plate 17 Structure, assembling, which is protected, is adsorbed No.1 protection baffle plate 9 installed in magnetic baffle plate deck 13 by magnetic baffle plate fixture block 14 during baffle plate Opposite side, No.1 protection baffle plate projection 18 is set to be embedded into the groove of No. two protection baffle plate 17 sides, at this moment No.1 protection baffle plate The hemispherical projections of the top and bottom of projection 18 can be mutually embedding with the hemispherical groove in the groove of No. two protection baffle plate 17 sides Close, make No.1 protection baffle plate 9 and No. two protection baffle plates 17 connect it is more firm.
Wherein, the inner side of the No.1 protection baffle plate 9 and No. two protection baffle plates 17 is fixedly embedded is provided with a tempering Windowpane 16, burst apart when being cleaved from rock the seam small crushed stone and fine sand can be protected baffle plate 9 and No. two guarantors by No.1 Guard 17 stops, avoids damaging the body of staff, and can be by protecting the toughened glass window on baffle plate 16 observation working conditions, use are more convenient.
Wherein, the No.1 protection baffle plate 9 and No. two protection baffle plates 17 are the reclinate semicircle knot in cylindrical side Structure, the reclinate structure in outside can stop the more sandstone jumped out, and use is safer.
The specifically used mode of the present embodiment and effect:
In the present invention, during using the present apparatus, first No. two protection baffle plates 17 are adsorbed by magnetic baffle plate fixture block 14 and are arranged on The side of magnetic baffle plate deck 13, then No.1 protection baffle plate 9 is adsorbed installed in magnetic baffle plate by magnetic baffle plate fixture block 14 The opposite side of deck 13, and make No.1 protection baffle plate projection 18 be embedded into the grooves of No. two protection baffle plate 17 sides, at this moment one The hemispherical projections of the top and bottom of number protection baffle plate projection 18 can and the groove of No. two protection baffle plate 17 sides in hemisphere Connected in star is mutually fitted together to, and No.1 protection baffle plate 9 and No. two protection baffle plates 17 is connected more firmly, by the side of hydraulic tube 19 and outside The hydraulic press in portion is connected, and then the splitting block 12 of the present apparatus is embedded into the rock fracture held successfully in advance, then pass through hydraulic pressure Machine makes hydraulic oil be sent to by hydraulic tube 19 and inlet nozzle 3 in hydraulic fluid chamber 4, and these hydraulic oil can drive piston 5 to undershoot Motion is hit, piston rod 7 and jacking block 8 positioned at the lower end of piston 5 can be driven to move down during impact, jacking block 8 is downward Two pieces of splitting blocks 12 can be promoted to move laterally during impact, so as to realize the cleavage operations to ore, and can be by main body outside The main pistol grip 1 of the upper end of shell 6 and the auxiliary gripping of side 15 the operation posture of holding equipment, when being cleaved from rock seam The burst apart small crushed stone and fine sand can be protected baffle plate 9 and No. two protection baffle plates 17 stop by No.1, avoid the body to staff Body damages, and can be by protecting the toughened glass window 16 on baffle plate to observe working condition, and use is more convenient.
Using technical scheme of the present invention, or those skilled in the art is under the inspiration of technical solution of the present invention, if Similar technical scheme is counted out, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.

Claims (8)

  1. A kind of 1. advance cutting hydraulic splitting machine for mine blasting, it is characterised in that:This is used for the pre- of mine blasting First digging hydraulic splitting machine includes main pistol grip, handle connecting rod, inlet nozzle, hydraulic fluid chamber, piston, main body cover, piston rod, top Block, No.1 protection baffle plate, spring fix spiral shell button, spring, splitting block, magnetic baffle plate deck, magnetic baffle plate fixture block, auxiliary gripping, Toughened glass window, No. two protection baffle plates, No.1 protection baffle plate projection and hydraulic tube;The top of the main body cover is connected by handle Extension bar is installed with a main pistol grip;The top of the main body cover is also embedded in and is provided with an inlet nozzle, and inlet nozzle Top side is fixedly installed a hydraulic tube;The inside top of the main body cover is fixedly installed a hydraulic fluid chamber;Institute State and a piston is movably set with the inside of hydraulic fluid chamber;The bottom of the piston is fixedly installed a piston rod;The work The bottom of stopper rod extends to the bottom inside of main body cover;The outside side of the main body cover is installed with an auxiliary gripping ;The two bottom sides of the main body cover are symmetrically installed with two splitting blocks by rotating shaft activity;The bottom of the main body cover Both sides also fix spiral shell button fixed symmetrical by spring and are provided with two springs, and top outer phase of the bottom of spring with cleaving block Connection;The bottom of the piston rod is installed with a jacking block, and the bottom of jacking block is embedded into the inner side of two splitting blocks;Institute The bottom outside for stating main body cover is further fixedly arranged on a magnetic baffle plate deck;The outside of the magnetic baffle plate deck passes through two Individual magnetic baffle plate fixture block is installed with a No.1 protection baffle plate and No. two protection baffle plates.
  2. 2. it is used for the advance cutting hydraulic splitting machine of mine blasting as claimed in claim 1, it is characterised in that:The magnetic gear Board block is the semicircular structure that side carries strip bulge.
  3. 3. it is used for the advance cutting hydraulic splitting machine of mine blasting as claimed in claim 1, it is characterised in that:The No.1 is protected The side fixed symmetrical of guard is provided with two No.1 protection baffle plate projections.
  4. 4. it is used for the advance cutting hydraulic splitting machine of mine blasting as described in claim 1 or 3, it is characterised in that:Described one Number protection baffle plate projection at the top and bottom of be fixedly installed some hemispherical projections structures.
  5. 5. it is used for the advance cutting hydraulic splitting machine of mine blasting as described in claim 1 or 3 or 4, it is characterised in that:It is described The side fixed symmetrical of No. two protection baffle plates is provided with two grooves corresponding with No.1 protection baffle plate projection.
  6. 6. it is used for the advance cutting hydraulic splitting machine of mine blasting as described in claim 1 or 5, it is characterised in that:Described two Some hemispherical groove structures are also equipped with the top and bottom of number protection baffle plate side groove.
  7. 7. it is used for the advance cutting hydraulic splitting machine of mine blasting as described in claim 1 or 3 or 5 or 6, it is characterised in that: The inner side of the No.1 protection baffle plate and No. two protection baffle plates is fixedly embedded to be provided with a toughened glass window.
  8. 8. being used for the advance cutting hydraulic splitting machine of mine blasting as described in claim 1 or 3 or 5 or 6 or 7, its feature exists In:The No.1 protection baffle plate and No. two protection baffle plates are the reclinate semicircular structure in cylindrical side.
CN201711071290.9A 2017-11-03 2017-11-03 A kind of advance cutting hydraulic splitting machine for mine blasting Withdrawn CN107740691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711071290.9A CN107740691A (en) 2017-11-03 2017-11-03 A kind of advance cutting hydraulic splitting machine for mine blasting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711071290.9A CN107740691A (en) 2017-11-03 2017-11-03 A kind of advance cutting hydraulic splitting machine for mine blasting

Publications (1)

Publication Number Publication Date
CN107740691A true CN107740691A (en) 2018-02-27

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ID=61233901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711071290.9A Withdrawn CN107740691A (en) 2017-11-03 2017-11-03 A kind of advance cutting hydraulic splitting machine for mine blasting

Country Status (1)

Country Link
CN (1) CN107740691A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318754A (en) * 2019-07-19 2019-10-11 湖南烈岩科技有限公司 With the splitting stick that structure is connected in series
CN111894583A (en) * 2020-07-06 2020-11-06 南京金焰锶业有限公司 Novel mineral exploitation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318754A (en) * 2019-07-19 2019-10-11 湖南烈岩科技有限公司 With the splitting stick that structure is connected in series
CN111894583A (en) * 2020-07-06 2020-11-06 南京金焰锶业有限公司 Novel mineral exploitation device

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