CN117722178B - Impact drill bit and downward down-the-hole step type mining device comprising same for gently inclined thick and large tungsten ore body - Google Patents
Impact drill bit and downward down-the-hole step type mining device comprising same for gently inclined thick and large tungsten ore body Download PDFInfo
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- CN117722178B CN117722178B CN202410034225.2A CN202410034225A CN117722178B CN 117722178 B CN117722178 B CN 117722178B CN 202410034225 A CN202410034225 A CN 202410034225A CN 117722178 B CN117722178 B CN 117722178B
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- 238000005065 mining Methods 0.000 title claims abstract description 38
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 14
- 239000010937 tungsten Substances 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000013016 damping Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 36
- 239000011435 rock Substances 0.000 claims description 31
- 238000009527 percussion Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 description 5
- 238000005422 blasting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a downward down-the-hole step type mining device for a slowly-inclined thick tungsten ore body, and relates to the technical field of mining devices. The device comprises a sealing seat, wherein a triggering seat and an assembling seat are respectively arranged on the top surface and the bottom surface of the sealing seat, a microwave generating device and a battery box are respectively arranged at the bottom of the assembling seat, and the battery box is used for providing electric energy for the microwave generating device and the triggering seat; the trigger seat is annular structure, and the inside of sealing seat alternates and installs hydraulic damping pole, and hydraulic damping pole's flexible end external fixation has the trigger piece, and the drill bit that can demolish is installed to hydraulic damping pole's flexible end department. According to the invention, accurate striking of the ore body in the mining process is realized through the cooperation of the microwave generating device and the waveguide tube, and in addition, the ore body can be effectively penetrated through microwaves generated by the microwave generating device, so that molecules in the ore body generate resonance, the ore body is easy to crush, and the acquisition rate is ensured to a certain extent.
Description
Technical Field
The invention relates to the technical field of mining devices, in particular to a down-the-hole step type mining device for a slowly-inclined thick tungsten ore body.
Background
The technology is based on an analog roof-cutting room pillar mining method, and is characterized in that a downward shallow hole is adopted to perform step-type lateral blasting mode to stope a bottom plate ore body, a remote control scraper is utilized to carry out shovel loading ore discharging, and the technology is usually implemented by using a cantilever tunnel boring machine in actual use.
Through searching and authorizing Chinese patent of bulletin No. CN220133972U, a multifunctional cantilever type tunnel boring machine is disclosed, the device utilizes the space on two sides of a cantilever of the tunnel boring machine, so that the extension stroke of the anchoring machine can be flexibly adjusted and rapidly moved, and the requirements of roadways with different sections and sizes are met, thereby carrying out multi-directional anchor bolt support on the tunneling roadway, effectively improving the mechanization degree of anchor bolt operation, shortening the anchor bolt time and greatly reducing the labor intensity of workers.
In addition, the Chinese patent of the publication number CN219993705U discloses a cantilever type heading machine with a dust removing mechanism, and the device further improves the working environment in a tunnel through the arrangement of the dust removing mechanism.
Secondly, the Chinese patent of the publication number CN219932172U is granted, and a high-efficiency cantilever type tunneling machine is disclosed, wherein a drill bit or an anchor rod is installed through an installation seat, a cutting arm is lifted through a first hydraulic telescopic rod, and the cutting head is rotated through a motor and a speed reducer, so that the inner wall of an annular tunnel is perforated and anchor rod is inserted, cutting equipment and anchor rod installation equipment are integrated, tunneling and supporting work can be completed, the utilization rate of the cantilever type tunneling machine is improved, and tunneling efficiency is improved.
However, when the mining device is actually used, the structure of the rock stratum in the mine is a sealed entity structure in most cases, so that the mining device has a slower mining rate due to the reasons of structural complexity, high strength, high hardness and the like of the rock stratum in the actual mining process, and the applicant designs a novel mining device for carrying out structural damage on the rock stratum in the mine before mining so as to accelerate the mining rate and reduce the operation load of the mining device.
Disclosure of Invention
The invention aims to provide a down-the-hole step type mining device for a slowly-inclined thick tungsten ore body, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides a percussion drill bit comprising:
the device comprises a sealing seat, a triggering seat and an assembling seat are respectively arranged on the top surface and the bottom surface of the sealing seat, a microwave generating device and a battery box are respectively arranged at the bottom of the assembling seat, and the battery box is used for providing electric energy for the microwave generating device and the triggering seat respectively;
the triggering seat is of an annular structure, a hydraulic damping rod is installed in the sealing seat in a penetrating mode, a triggering piece is fixed outside the telescopic end of the hydraulic damping rod, and a detachable drill bit is installed at the telescopic end of the hydraulic damping rod;
The outer surface of the drill bit is provided with a plurality of notches, each notch is communicated with each other, and the notches are jointly provided with a waveguide tube which is used for receiving and releasing microwaves transmitted by the microwave generating device;
When the drill bit contacts the excessively hard rock stratum, the rock stratum props against the drill bit to enable the hydraulic damping rod to shrink, and in the shrinkage process of the hydraulic damping rod, the trigger piece is contacted with the trigger seat, so that the microwave generating device releases microwaves into the rock stratum through the waveguide tube on the drill bit.
As a further preferred embodiment, the microwave generating device includes:
A microwave source for converting electrical energy into a microwave signal;
The microwave generator is used for amplifying and debugging a microwave source into microwave power;
the power amplifier is arranged at the output end of the microwave generator and is used for amplifying microwave power;
the regulator is used for regulating the output power, frequency and working time parameters of the microwaves;
and the trigger is used for starting the microwave generator to operate, and a signal wire harness is arranged between the trigger and the trigger seat.
As a further preferred aspect, the top surface and the bottom surface of the seal seat are jointly provided with a protection component, and the protection component comprises:
The sealing cover is arranged on the top surface of the sealing seat, a penetrating hole matched with the drill bit is formed in the center point of the sealing cover, and a plurality of crushing heads distributed around the drill bit are fixed on the top of the sealing cover and used for crushing rock bodies;
The carrying cylinder is arranged on the bottom surface of the sealing seat, the microwave generating device is sleeved in the carrying cylinder, and the bottoms of the power amplifier, the trigger and the regulator are all fixed with the cylinder bottom in the carrying cylinder.
In this scheme, it is further preferable that the bottom end of the outer part of the carrying cylinder is provided with a plurality of notches for heat dissipation, and the middle end of the outer part of the carrying cylinder is fixed with a track ring.
As a further preferable mode, the drill bit is externally inserted and provided with a communication wire harness electrically connected with the waveguide tube, one end, far away from the drill bit, of the communication wire harness is provided with a telescopic wire harness communicated with the communication wire harness, and the telescopic wire harness penetrates through the sealing seat and is communicated with the output end of the power amplifier.
As a further preferred aspect, the trigger member includes: the carrying disc is fixedly arranged outside the telescopic end of the hydraulic damping rod, and a plurality of uniformly distributed trigger rods are fixed at one surface of the carrying disc facing the trigger seat;
the trigger seat is characterized in that contact switches with the number and the positions matched with the trigger rods are arranged at the trigger surface of the top of the trigger seat, the contact switches are electrically connected with the trigger seat, and each contact switch is provided with a corresponding trigger rod which is matched with the corresponding contact switch.
In a second aspect, to perfect the technical solution, the applicant further proposes a down-the-hole step type mining device for a slowly inclined thick tungsten ore body, including any one of the impact drill bits, and further including:
cutting part, shipment part, walking part and control unit, percussion bit installs in the cutting part, its characterized in that, the cutting part includes:
An electro-hydraulic cylinder mounted at the shipping component and adapted to provide propulsion;
a rotary motor installed at an output end of the electro-hydraulic cylinder and configured to provide a rotational force;
the cutting sleeve head is arranged at the output end of the rotating motor, a plurality of impact heads for crushing rock strata are arranged outside the cutting sleeve head, and the impact drill bit is arranged at the central position outside the cutting sleeve head.
As a further preferable scheme, the cutting sleeve head is provided with a screw groove at the outer central position, and a track groove is arranged at the bottom end position inside the screw groove;
the sealing seat is externally provided with threads, and is matched with the track ring and the track groove by virtue of the threads and the threaded groove.
Compared with the prior art, the invention has the beneficial effects that:
According to the downward down-the-hole step type mining device for the slowly-inclined thick tungsten ore body, accurate striking of the ore body in the mining process is achieved through the cooperation of the microwave generating device and the waveguide tube, and in addition, the ore body can be effectively penetrated through microwaves generated by the microwave generating device, so that molecules in the ore body resonate, the ore body is easy to break, and the collection rate is guaranteed to a certain extent;
In addition, the hydraulic damping rod and the trigger piece are designed, so that the mining process is safer and more convenient, the hydraulic damping rod can absorb most of impact force when the ore body is impacted, damage to equipment is avoided, and the trigger piece is designed, so that the mining process can realize the function of automatically triggering microwave impact, and the mining efficiency is ensured to a certain extent;
meanwhile, the invention fully considers the problems of protection and heat dissipation in the structural design of the device, improves the stability and reliability of the device, can effectively protect the internal elements of the device from rock stratum impact and abrasion through the protection parts arranged on the top surface and the bottom surface of the sealing seat, prolongs the service life of equipment, and ensures the heat dissipation requirement of the equipment in the long-time operation process and avoids the possibility of equipment failure caused by overheating through the design of the notch and the track ring outside the carrying cylinder.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a structural view of the cutting member of the present invention;
FIG. 3 is an internal composition view of the cutting member of the present invention;
FIG. 4 is a structural view of the cutting ferrule of the present invention;
FIG. 5 is a view showing the external structure of the shield member of the present invention;
FIG. 6 is a view showing the internal structure of the shield member of the present invention;
FIG. 7 is a view showing the external structure of the microwave impingement member according to the present invention;
Fig. 8 is a view showing the internal structure of the microwave impact member of the present invention.
In the figure: 1. cantilever tunnel boring machine; 2. a cutting member; 201. an electro-hydraulic cylinder; 202. a hydraulic cylinder; 203. a rotating electric machine; 204. cutting the sleeve head; 205. an impact head; 206. a screw connection groove; 207. a track groove; 3.a protective member; 301. a carrying cylinder; 302. a notch; 303. a track ring; 304. sealing cover; 305. a crushing head; 306. penetrating the jack; 4. a microwave impingement member; 401. a sealing seat; 402. a battery case; 403. a regulator; 404. a power amplifier; 405. a trigger; 406. a microwave generator; 407. a microwave source; 408. a trigger lever; 409. a carrying tray; 410. a drill bit; 411. a waveguide; 412. a communication harness; 413. a retractable wire harness; 414. a trigger seat; 415. a hydraulic damping rod; 416. and a contact switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to geological occurrence characteristics of ore bodies, mining technical conditions and production practices of Nanlun river tungsten ores for years, for medium/thick ore bodies with thickness of more than 6m, due to the limitation of climbing capacity of shoveling conveying equipment, when pit test laneways (forming development mining standard) and cutting laneways are constructed, projects cannot be arranged on a bottom plate of the ore bodies, so that bottom plate ore is pressed in the stoping process, the bottom plate ore is stoped in practice in a bottom lifting manner, a top plate is exposed too high, mining efficiency is low, blind shots generated by blasting are difficult to find, and great threat is brought to safety of rock drilling blasting and shoveling operation.
In a first aspect, the present invention provides a percussion drill bit for use in a down-the-hole step mining apparatus for a gently sloping thick tungsten ore body, comprising: microwave impingement member 4, microwave impingement member 4 includes: the sealing seat 401, the top surface and the bottom surface of the sealing seat 401 are respectively provided with a trigger seat 414 and an assembly seat, the bottom of the assembly seat is respectively provided with a microwave generating device and a battery box 402, and the battery box 402 respectively provides electric energy for the microwave generating device and the trigger seat 414; the trigger seat 414 is of an annular structure, a hydraulic damping rod 415 is installed in the seal seat 401 in a penetrating mode, a trigger piece is fixed outside the telescopic end of the hydraulic damping rod 415, and a detachable drill bit 410 is installed at the telescopic end of the hydraulic damping rod 415; the outer surface of the drill bit 410 is provided with a plurality of slots, each slot is mutually communicated and is commonly provided with a waveguide 411, and the waveguide 411 is used for receiving and releasing microwaves transmitted by the microwave generating device, and when the drill bit 410 contacts an excessively hard rock stratum, the rock stratum props against the drill bit 410 to enable the hydraulic damping rod 415 to shrink, and in the shrinkage process of the hydraulic damping rod 415, the trigger piece contacts with the trigger seat 414, so that the microwave generating device releases the microwaves into the rock stratum through the waveguide 411 on the drill bit 410.
As a specific embodiment, the microwave generating apparatus includes: a microwave source 407 for converting electric energy into a microwave signal; a microwave generator 406 for amplifying and tuning a microwave source 407 to microwave power; a power amplifier 404 mounted at an output end of the microwave generator 406 for amplifying microwave power; a regulator 403 for regulating output power, frequency and operating time parameters of the microwaves; the trigger 405 is used for starting the microwave generator 406 to operate, and a signal wire harness is installed between the trigger 405 and the trigger seat 414.
It should be noted that, at the present stage, the microwave generator 407 is a common mining device, and in the present application, the microwave source 407 is a main device for generating microwaves, and its function is to convert electric energy into microwave signals, and it should be noted that, the microwave source 407 is of many types, and there are a magnetron, a microwave tube, a transistor, etc. in general, in addition, it should be noted that, when in actual use, the output power and the frequency of the microwave source 407 need to be adjusted according to specific applications to ensure the effect of microwave impact vibration, in addition, the waveguide 411 in the present application needs to have good conductivity and insulation properties to maintain the transmission efficiency and stability of microwaves, and in addition, in the present application, the performance indexes of the microwave generator 406 include output power, frequency stability, waveform distortion, etc. that directly affect the effect and application range of microwave impact vibration, the power amplifier 404 is usually composed of a microwave electronic tube, and by adjusting parameters of the power amplifier 404, the output power and waveform of microwaves can be controlled to achieve the required microwave impact effect, in addition, the power amplifier 404 needs to consider and heat dissipation and other problems when in actual use, in order to ensure that the automatic adjustment and the automatic performance of the microwave impact vibration controller 403 is required to be adjusted, and the automatic performance of the present application can be adjusted in order to realize the automatic adjustment and the actual conditions, and the automatic performance of the system 403 is required to realize the automatic adjustment and the actual performance and the automatic adjustment and the performance control.
As a specific embodiment, the top and bottom surfaces of the seal holder 401 are commonly mounted with the shielding member 3, and as can be seen with reference to fig. 5 to 8, the shielding member 3 includes: the sealing cover 304 is arranged on the top surface of the sealing seat 401, a penetrating hole 306 matched with the drill bit 410 is formed in the center point of the sealing cover 304, a plurality of crushing heads 305 distributed around the drill bit 410 are fixed on the top of the sealing cover 304, and the crushing heads 305 are used for crushing rock mass; the mounting tube 301 is mounted on the bottom surface of the sealing seat 401, and the microwave generator is housed inside the mounting tube 301, and the bottoms of the power amplifier 404, the trigger 405, and the regulator 403 are all fixed to the bottom of the mounting tube 301. By providing the protection member 3 on the top and bottom surfaces of the seal holder 401, the internal components of the device can be effectively protected from the impact and abrasion of the rock strata, and the service life of the device can be prolonged.
As a specific embodiment, referring to fig. 5 and 6, in the present application, a plurality of notches 302 for heat dissipation are formed at the bottom end of the outer part of the carrying cylinder 301, and a track ring 303 is fixed at the middle end of the outer part of the carrying cylinder 301, and it should be noted that, by designing the notches 302 and the track ring 303 of the outer part of the carrying cylinder 301, the heat dissipation requirement of the device in the long-time operation process is ensured, and the possibility of device failure caused by overheating is avoided.
As a specific embodiment, the drill 410 is externally inserted with a communication wire harness 412 electrically connected to the waveguide 411, one end of the communication wire harness 412 away from the drill 410 is provided with a telescopic wire harness 413, and the telescopic wire harness 413 penetrates through the sealing seat 401 and the output end of the power amplifier 404, wherein the communication wire harness 412 is a wire harness with high hardness, and the wire harness can squeeze the telescopic wire harness 413 and enable the telescopic wire harness 413 to generate telescopic deformation when in actual use.
As a specific embodiment, referring to fig. 7 and 8, the trigger of the present application includes: the carrying disc 409 is fixedly arranged outside the telescopic end of the hydraulic damping rod 415, and one surface of the carrying disc 409 facing the trigger seat 414 is fixedly provided with a plurality of trigger rods 408 which are uniformly distributed; the trigger surface on the top of the trigger seat 414 is provided with contact switches 416 which are matched with the trigger rods 408 in number and position, the contact switches 416 are electrically connected with the trigger seat 414, and each contact switch 416 is provided with a corresponding trigger rod 408 which is matched with the corresponding contact switch.
It should be noted that, contact switches 416 matching the number and positions of the trigger levers 408 are installed at the trigger surface on the top of the trigger base 414. The contact switches 416 are electrically connected with the trigger bases 414, so as to ensure that the contact switches 416 can accurately sense the motion state of the trigger rods 408, and each contact switch 416 has a corresponding trigger rod 408 matched with the corresponding trigger rod, which is beneficial to realizing accurate control on the trigger bases 414.
In a second aspect, to perfect the above technical solution, referring to fig. 1 to 8, the present application further provides a down-the-hole step type mining device for a slowly inclined thick tungsten ore body, which includes the above-mentioned impact drill bit, and further includes a cutting part 2, a loading part, a traveling part, and a control part, wherein the impact drill bit is installed in the cutting part 2, and the cutting part 2 includes: an electro-hydraulic cylinder 201 installed at the shipping part and for providing propulsive force; a rotating motor 203 mounted at an output end of the electro-hydraulic cylinder 201 and configured to provide a rotational force; the cutting sleeve head 204 is arranged at the output end of the rotating motor 203, a plurality of impact heads 205 for crushing rock strata are arranged outside the cutting sleeve head 204, the impact drill bit is arranged at the center position outside the cutting sleeve head 204, and in addition, the hydraulic cylinders 202 for extending and retracting distances of the existing electro-hydraulic cylinders 201 are arranged outside the electro-hydraulic cylinders 201 and the rotating motor 203.
It should be added that in the present application, the slowly inclined down-the-hole step mining device for heavy tungsten ore bodies is the cantilever type tunnel boring machine 1, which comprises a cutting part 2, a loading part, a traveling part and a control part, wherein the loading part is used for collecting and transporting broken rock bodies, the cleaning part at the bottom of the cutting part 2 and the conveyor belt part inside the cantilever type tunnel boring machine 1 are specifically shown in fig. 1, the traveling part is used for moving the cantilever type tunnel boring machine 1, the track and the parts around the track are specifically shown in fig. 1, the control part is a part for controlling the operation of the cantilever type tunnel boring machine 1 in the present application, and the machine room part at the top of the track in fig. 1 is specifically shown, and it should be emphasized that the loading part, the traveling part and the control part are only simple descriptions of the conventional mining equipment in the prior art, and the principle and the constitution of the operation of the cantilever type tunnel boring machine 1 are not excessively described.
As a specific embodiment, referring to fig. 2 and 3, the cutting sleeve head 204 is provided with a threaded groove 206 at the outer center position, a track groove 207 is provided at the bottom end position inside the threaded groove 206, and referring to fig. 5-8, the sealing seat 401 is provided with threads, the sealing seat 401 is adapted with the threads and the threaded groove 206, and the track ring 303 is adapted with the track groove 207, and it is to be added that the stability of the drill bit 410 in the mining process can be enhanced and the shaking and the offset can be reduced by providing the threaded groove 206 and the track groove 207 at the outer center position of the cutting sleeve head 204.
Principle of operation
During the mining process, the drill bit 410 is arranged at the outer center of the cutting sleeve head 204, the sealing seat 401 is matched with the threaded groove 206, the triggering piece is fixed at the telescopic end of the hydraulic damping rod 415, during normal drilling, the hydraulic damping rod 415 is kept in a contracted state, the rock stratum cannot trigger the expansion of the hydraulic damping rod 415, and when the rock stratum encounters a hard rock stratum, the rock stratum props against the drill bit 410, and the hydraulic damping rod 415 is compressed and contracted.
In the microwave triggering stage, the hydraulic damping rod 415 triggers the trigger piece to contact with the trigger seat 414 in the shrinkage process, and activates the microwave generating device, and the device converts electric energy into a microwave signal after receiving a trigger signal, amplifies and debugs the microwave signal, generates microwave power, and releases the microwave power into the rock stratum through the waveguide 411.
In the microwave release phase, microwaves propagate in the rock formation to generate crushing energy, so that the inside of the rock formation is locally crushed. And then enters a crushing stage, the rock stratum with the crushed inside is easily crushed by the impact force of the drill bit 410 and the rotation force of the cutting sleeve head 204, after the microwave power is released, the mining device continues to advance after the rock stratum is crushed, and the process is circularly executed until the preset mining depth or target is reached.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A percussion drill bit for use in a down-the-hole step mining apparatus for gently sloping thick tungsten ore bodies, comprising:
The device comprises a sealing seat (401), a trigger seat (414) and an assembly seat are respectively arranged on the top surface and the bottom surface of the sealing seat (401), a microwave generating device and a battery box (402) are respectively arranged at the bottom of the assembly seat, and the battery box (402) respectively provides electric energy for the microwave generating device and the trigger seat (414);
The trigger seat (414) is of an annular structure, a hydraulic damping rod (415) is installed in the sealing seat (401) in a penetrating mode, a trigger piece is fixed outside the telescopic end of the hydraulic damping rod (415), and a detachable drill bit (410) is installed at the telescopic end of the hydraulic damping rod (415);
The outer surface of the drill bit (410) is provided with a plurality of notches, each notch is communicated with each other and is provided with a waveguide tube (411) together, and the waveguide tubes (411) are used for receiving and releasing microwaves transmitted by the microwave generating device;
When the drill bit (410) contacts an excessively hard rock stratum, the rock stratum props against the drill bit (410) to enable the hydraulic damping rod (415) to shrink, the trigger piece is contacted with the trigger seat (414) in the shrinkage process of the hydraulic damping rod (415), and the microwave generating device releases microwaves into the rock stratum through the waveguide tube (411) on the drill bit (410);
The trigger includes: the carrying disc (409) is fixedly arranged outside the telescopic end of the hydraulic damping rod (415), and a plurality of uniformly distributed trigger rods (408) are fixed at one surface of the carrying disc (409) facing the trigger seat (414);
The trigger surface of trigger seat (414) top department install quantity and position all with trigger lever (408) assorted contact switch (416), contact switch (416) with trigger seat (414) looks electric connection, and each contact switch (416) have corresponding trigger lever (408) to adapt with it.
2. A percussion drill bit according to claim 1, characterized in that: the microwave generating apparatus includes:
A microwave source (407) for converting electrical energy into a microwave signal;
A microwave generator (406) for amplifying and tuning a microwave source (407) to microwave power;
a power amplifier (404) mounted at the output of the microwave generator (406) for amplifying microwave power;
A regulator (403) for regulating the output power, frequency and operating time parameters of the microwaves;
And the trigger (405) is used for starting the microwave generator (406) to operate, and a signal wire harness is arranged between the trigger (405) and the trigger seat (414).
3. A percussion drill bit according to claim 2, characterized in that: the top surface and the bottom surface of the sealing seat (401) are jointly provided with a protection component (3), and the protection component (3) comprises:
The sealing cover (304) is arranged on the top surface of the sealing seat (401), a penetrating hole (306) matched with the drill bit (410) is formed in the center point of the sealing cover (304), a plurality of crushing heads (305) distributed around the drill bit (410) are fixed on the top of the sealing cover (304), and the crushing heads (305) are used for crushing rock mass;
And a mounting cylinder (301) mounted on the bottom surface of the sealing seat (401), wherein the microwave generating device is sleeved inside the mounting cylinder (301), and the bottoms of the power amplifier (404), the trigger (405) and the regulator (403) are all fixed with the cylinder bottom inside the mounting cylinder (301).
4. A percussion drill bit according to claim 3, characterized in that: a plurality of notches (302) for heat dissipation are formed in the bottom end of the outer part of the carrying cylinder (301), and a track ring (303) is fixed at the middle end of the outer part of the carrying cylinder (301).
5. A percussion drill bit according to claim 2, characterized in that: the drill bit (410) is externally inserted and provided with a communication wire harness (412) electrically connected with the waveguide tube (411), one end, far away from the drill bit (410), of the communication wire harness (412) is provided with a telescopic wire harness (413) communicated with the drill bit, and the telescopic wire harness (413) penetrates through the sealing seat (401) and the output end of the power amplifier (404) is communicated with the power amplifier.
6. A slowly tilting thick tungsten ore body down-the-hole step mining device comprising the percussion drill bit of any one of claims 1-5, further comprising a cutting element (2), a loading element, a walking element and a control element, the percussion drill bit being mounted in the cutting element (2), characterized in that the cutting element (2) comprises:
An electro-hydraulic cylinder (201) mounted at the shipping component and adapted to provide propulsion;
A rotary motor (203) mounted at an output end of the electro-hydraulic cylinder (201) and configured to provide a rotational force;
the cutting sleeve head (204) is arranged at the output end of the rotating motor (203), a plurality of impact heads (205) for crushing rock strata are arranged outside the cutting sleeve head (204), and the impact drill bit is arranged at the central position outside the cutting sleeve head (204).
7. A slowly sloped heavy tungsten ore body down-the-hole step mining device according to claim 6, wherein: a screw groove (206) is formed in the center position of the outside of the cutting sleeve head (204), and a track groove (207) is formed in the bottom end position of the inside of the screw groove (206);
The sealing seat (401) is externally provided with threads, the sealing seat (401) is matched with the threaded groove (206) by virtue of the threads, and the track ring (303) is matched with the track groove (207).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410034225.2A CN117722178B (en) | 2024-01-10 | 2024-01-10 | Impact drill bit and downward down-the-hole step type mining device comprising same for gently inclined thick and large tungsten ore body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410034225.2A CN117722178B (en) | 2024-01-10 | 2024-01-10 | Impact drill bit and downward down-the-hole step type mining device comprising same for gently inclined thick and large tungsten ore body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117722178A CN117722178A (en) | 2024-03-19 |
| CN117722178B true CN117722178B (en) | 2024-07-16 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207332766U (en) * | 2017-10-20 | 2018-05-08 | 王玉峰 | A kind of metallic mineral exploration core bit |
| CN108060927A (en) * | 2017-12-10 | 2018-05-22 | 北京工业大学 | Microwave mixes broken rock device with Water Cutting in a kind of tunnelling |
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| EP2110508A1 (en) * | 2008-04-16 | 2009-10-21 | Schlumberger Holdings Limited | microwave-based downhole activation method for wellbore consolidation applications |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207332766U (en) * | 2017-10-20 | 2018-05-08 | 王玉峰 | A kind of metallic mineral exploration core bit |
| CN108060927A (en) * | 2017-12-10 | 2018-05-22 | 北京工业大学 | Microwave mixes broken rock device with Water Cutting in a kind of tunnelling |
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| CN117722178A (en) | 2024-03-19 |
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