CN114151082A - Automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting pick device - Google Patents
Automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting pick device Download PDFInfo
- Publication number
- CN114151082A CN114151082A CN202111254223.7A CN202111254223A CN114151082A CN 114151082 A CN114151082 A CN 114151082A CN 202111254223 A CN202111254223 A CN 202111254223A CN 114151082 A CN114151082 A CN 114151082A
- Authority
- CN
- China
- Prior art keywords
- foam
- pick
- cavity
- pressure jet
- pressure
- 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.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 98
- 239000011435 rock Substances 0.000 title claims abstract description 45
- 239000000428 dust Substances 0.000 title claims abstract description 36
- 230000001629 suppression Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000576 supplementary effect Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 210000003934 vacuole Anatomy 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
-
- 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
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
-
- 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
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/60—Slitting by jets of water or other liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/19—Means for fixing picks or holders
- E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/226—Control valves for the spraying liquid used in dust suppression systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1066—Making by using boring or cutting machines with fluid jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a cutting tooth device capable of automatically and high-pressure jet-assisted rock breaking and foam dust suppression, which comprises a cutting tooth, a high-pressure jet generator and a foam generator, wherein the cutting tooth device can automatically switch the high-pressure jet-assisted rock breaking or the high-pressure foam dust suppression according to different working conditions of the cutting tooth work, when a machine performs tunneling and the cutting tooth and the rock are cut, the cutting tooth and the rock are switched to a high-pressure jet state, so that the high-efficiency crushing of a hard rock stratum is realized, when the cutting tooth is not in contact with the rock, a nozzle is switched to a high-pressure foam state, the timely dust suppression is realized, the dust suppression effect is good, and the hard rock roadway tunneling efficiency can be effectively improved.
Description
Technical Field
The invention relates to a cutting pick device, in particular to an automatic high-pressure jet auxiliary rock breaking and foam dust removal cutting pick device suitable for a coal mining machine, a heading machine and a rock drilling machine for rock breaking.
Background
The high-pressure water jet and the common cutting teeth are combined to crush hard rock, so that the coal rock can be effectively cut. However, in the prior art, because of the influence of factors such as nozzle target distance, conveying pressure and the like, the high-pressure jet flow cannot timely and effectively assist to generate cracks, the erosion capability is poor, and because most of the foam nozzles are arranged at the middle and rear positions of the machine, the foam cannot timely extinguish dust of dust generating points, the foam flow speed is not enough, the covered area is small, the dust extinguishing effect is poor, the dust extinguishing effect is more serious, and only the high-pressure jet flow and the foam can work uninterruptedly because real-time working conditions cannot be judged. Therefore, it is necessary to develop an automatic high-pressure jet auxiliary rock breaking and foam dust removal cutting pick device.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting tooth device which can automatically switch high-pressure jet flow auxiliary rock breaking or high-pressure foam dust suppression according to real-time working conditions, and achieve the effects of hard rock breaking, efficient dust suppression, effective energy saving and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a cutting pick device for automatic high-pressure jet assisted rock breaking and foam dust suppression, which comprises a cutting pick, a high-pressure jet generator and a foam generator, wherein the cutting pick is connected with the high-pressure jet generator; the cutting pick comprises a cutting tip body, a pick body and a cutting pick seat which are coaxially fixed together in sequence; the tooth body is fixed in the center of the front end of the tooth body, the tail end of the tooth body extends into the inner cavity of the pick box, a spring damping device corresponding to the tail end of the tooth body is arranged in the inner cavity of the pick box, a flange sleeve fixed with the pick box is sleeved outside the tooth body, a stepped shaft part corresponding to the flange sleeve is formed on the tooth body, the tooth body can move in the inner cavity of the pick box and the inner cavity of the flange sleeve along the axial direction, a central water channel is arranged at the axis of the tooth body, the tail end of the central water channel is vertically communicated with a radial flow channel, a conical nozzle with inner taper and communicated with the central water channel is arranged on the side face of the front end of the tooth body, and the inner diameter of the radial flow channel is smaller than that of the central water channel; the high-pressure jet generator and the foam generator are arranged in the pick box in parallel and are used for being communicated with the radial flow channel, and when the radial flow channel is communicated with one of the high-pressure jet generator and the foam generator, the other one of the high-pressure jet generator and the foam generator is not communicated with the radial flow channel.
Preferably, the high-pressure jet generator comprises a high-pressure water cavity, a stepped pressurizing cavity, an oscillating cavity and a high-pressure water inlet runner, and the high-pressure water cavity, the stepped pressurizing cavity, the oscillating cavity and the high-pressure water inlet runner are communicated with one another in sequence.
Preferably, the stepped pressurizing cavity is divided into a first part pressurizing cavity, a second part pressurizing cavity, a third part pressurizing cavity and a fourth part pressurizing cavity, wherein the diameters of the first part pressurizing cavity, the second part pressurizing cavity, the third part pressurizing cavity and the fourth part pressurizing cavity are sequentially reduced from back to front; the first part of pressurizing cavity and the third part of pressurizing cavity are gradually contracted funnel-shaped cavities; the second part of the pressurizing cavity and the fourth part of the pressurizing cavity are cylindrical cavities, and the diameter of the fourth part of the pressurizing cavity is the same as that of the high-pressure water inlet runner.
Preferably, the front end and the rear end of the oscillation cavity are both conical cavities, and the middle part is a cylindrical cavity with the diameter equal to that of the conical bottom.
Preferably, the foam generator comprises a high-pressure foam inner cavity, a foam nozzle, a mixing cavity, a foam inlet flow passage, an air inlet passage and a one-way valve; the high-pressure foam inner cavity, the foam nozzle, the mixing cavity and the foam inlet flow passage are sequentially communicated with one another, an air inlet channel is communicated with the side wall of the mixing cavity, and a one-way valve is arranged in the air inlet channel.
Preferably, the check valve is installed at the front end of the air inlet passage, and the tail end of the air inlet passage is located at the rear end position of the mixing cavity and at the bottom of the foam nozzle.
Preferably, the front end of the flange sleeve is provided with a dustproof sheet corresponding to the tooth body, and the front end of the dustproof sheet is contacted with the tooth body; a plurality of sealing holes are formed in the flange sleeve, O-shaped sealing rings I are arranged in the sealing holes in the contact surface of the flange sleeve and the tooth body, and O-shaped sealing rings II are arranged in the sealing holes in the contact surface of the flange sleeve and the inner cavity of the pick box.
Preferably, the spring damping device comprises a V-shaped dome spring, a common spring, a spring pad and a stud, the V-shaped dome spring and the common spring are fixed to the rear portion of the inner cavity of the pick box through the stud, the top of the V-shaped dome spring is in contact with the tail end of the pick body and is arranged in a semicircular structure, the length of the common spring is smaller than that of the V-shaped dome spring, and the spring pad is mounted at the front end of the common spring.
Preferably, the pick box is provided with a leakage hole communicated with the inner cavity of the pick box.
Preferably, the two ends of the radial flow channel are provided with annular grooves for communicating with the high-pressure jet generator and the foam generator, and the inner diameter of the annular grooves is larger than that of the radial flow channel.
The invention has the beneficial effects that:
(1) the conical nozzle is arranged at the lateral position of the front end of the pick body, and on the basis of not reducing the strength of the cutting edge body, the spraying target distance is closest, so that the cutting pick can be assisted to break rock to the maximum extent, and dust can be removed accurately in time from a dust producing point;
(2) the cutting tooth can automatically switch the high-pressure jet flow to assist rock breaking or high-pressure foam to extinguish dust according to real-time working conditions and cutting and non-cutting states, so that uninterrupted work of the high-pressure jet flow and the foam is avoided, energy waste is reduced, the problem of time lag of the high-pressure jet flow and the foam is eliminated, nozzle plugs are flushed away in time, and blockage is avoided;
(3) under the condition that the pressure flow of the high-pressure water pump is constant, the jet flow passes through a stepped pressurizing cavity arranged in the pick seat, so that the pressure can be lifted; the efflux after stepping up can produce high frequency "water hammer pressure" behind the shock chamber, replaces the continuous high-pressure efflux of giving birth to single "stagnation pressure", can aggravate rock breakage and fatigue failure, and supplementary effect is far stronger than ordinary efflux.
(4) Negative pressure is formed in the mixing cavity after the high-pressure foam liquid passes through the foam nozzle, air is sucked to collide and mix with the foam liquid, the foam generation amount is increased, and the foam void volume is increased; the one-way valve can effectively prevent foam liquid from flowing back into the air inlet channel, and can effectively prevent high-quality foam from being obtained.
(5) Spring damping device cuts off the rock at the pick, and through V type calotte spring and ordinary spring second grade buffer structure, axial shock attenuation effect is obvious, can effectively avoid tooth body and other structure to strike the destruction, and V type calotte spring is compared in ordinary V type spring, has and still can keep elasticity inefficacy when high strength repetitive work. When the cutting pick does not cut, the cutting pick body can be timely restored to the initial position, and foam dust suppression is guaranteed.
(6) The cutting pick device has the advantages of simple and compact structure, high reliability, same appearance as a common cutting pick, convenience in disassembly and assembly and wide applicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a high-pressure foam dust-removing structure diagram of an automatic high-pressure jet flow auxiliary rock breaking and foam dust-removing cutting pick device of the invention;
FIG. 2 is a high-pressure jet auxiliary rock breaking structure diagram of the automatic high-pressure jet auxiliary rock breaking and foam dust suppression cutting pick device of the invention;
fig. 3a is a block diagram of the high pressure jet generator of the present invention;
FIG. 3b is a block diagram of the foam generator of the present invention;
FIG. 4 is a structural view of a spring damper assembly of the present invention;
description of reference numerals:
1. the tooth tip comprises a blade tip body, 2 parts of a tooth body, 3 parts of a central water channel, 4 parts of a radial flow channel, 5 parts of a pick seat, 6 parts of a high-pressure jet generator, 6-1 parts of a high-pressure water cavity, 6-2 parts of a stepped pressurizing cavity, 6-3 parts of an oscillating cavity, 6-4 parts of a high-pressure water inlet flow channel, 7 parts of a foam generator, 7-1 parts of a high-pressure foam inner cavity, 7-2 parts of a foam nozzle, 7-3 parts of a mixing cavity, 7-4 parts of a foam inlet flow channel, 7-5 parts of an air inlet channel, 7-6 parts of a check valve, 8 parts of an O-shaped sealing ring I, 9 parts of an O-shaped sealing ring II, 10 parts of a bolt, 11 parts of a flange sleeve, 12 parts of a nozzle, 13 parts of a dustproof sheet, 14 parts of a spring damping device, 14-1 parts of a V-shaped dome spring, 14-2 parts of a common spring, 14-3 parts of a spring cushion, 14-4 parts of a stud, 15 parts of a bolt, 15 parts of a spring, a high-pressure water outlet flow channel, and a high-pressure water outlet flow channel, A leakage hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present example provides an automatic high-pressure jet assisted rock breaking and foam dust removal cutting pick device, which comprises a cutting pick, a high-pressure jet generator 6 and a foam generator 7; the cutting pick comprises a cutting tip body 1, a pick body 2 and a cutting pick seat 5 which are coaxially fixed together in sequence; the tooth point body 1 is fixed at the center of the front end of the tooth body 2, the tail end of the tooth body 2 extends into the inner cavity of the pick seat 5, a spring damping device 14 corresponding to the tail end of the tooth body 2 is arranged in the inner cavity of the pick seat 5, a flange sleeve 11 fixed with the pick seat 5 is sleeved outside the tooth body 2, a stepped shaft part corresponding to the flange sleeve 11 is formed on the tooth body 2, the tooth body 2 can move in the inner cavity of the pick seat 5 and the inner cavity of the flange sleeve 11 along the axial direction, a central water channel 3 is arranged at the axis of the tooth body 2, a radial flow channel 4 is vertically communicated with the tail end of the central water channel 3, a conical nozzle 12 with inner taper and communicated with the central water channel 3 is arranged on the side face of the front end of the tooth body 2, and the inner diameter of the radial flow channel 4 is smaller than that of the central water channel 3; the high-pressure jet generator 6 and the foam generator 7 are arranged in the pick box 5 in parallel and are used for being communicated with the radial flow channel 4, and when the radial flow channel 4 is communicated with one of the high-pressure jet generator 6 and the foam generator 7, the other one is not communicated with the radial flow channel 4.
The high-pressure jet generator 6 comprises a high-pressure water cavity 6-1, a stepped pressurizing cavity 6-2, an oscillating cavity 6-3 and a high-pressure water inlet runner 6-4, wherein the high-pressure water cavity 6-1, the stepped pressurizing cavity 6-2, the oscillating cavity 6-3 and the high-pressure water inlet runner 6-4 are communicated with each other in sequence.
The stepped pressurizing cavity 6-2 is divided into a first part pressurizing cavity, a second part pressurizing cavity, a third part pressurizing cavity and a fourth part pressurizing cavity, wherein the diameters of the first part pressurizing cavity, the second part pressurizing cavity, the third part pressurizing cavity and the fourth part pressurizing cavity are sequentially reduced from back to front; the first part of pressurizing cavity and the third part of pressurizing cavity are gradually contracted funnel-shaped cavities; the second part of the pressurizing cavity and the fourth part of the pressurizing cavity are cylindrical cavities, and the diameter of the fourth part of the pressurizing cavity is the same as that of the high-pressure water inlet runner 6-4.
The front end and the rear end of the oscillation cavity 6-3 are both conical cavities, and the middle part is a cylindrical cavity with the diameter equal to that of the conical bottom.
The foam generator 7 comprises a high-pressure foam inner cavity 7-1, a foam nozzle 7-2, a mixing cavity 7-3, a foam inlet runner 7-4, an air inlet channel 7-5 and a one-way valve 7-6; the high-pressure foam inner cavity 7-1, the foam nozzle 7-2, the mixing cavity 7-3 and the foam inlet runner 7-4 are sequentially communicated with one another, the side wall of the mixing cavity 7-3 is communicated with an air inlet channel 7-5, and a one-way valve 7-6 is arranged in the air inlet channel 7-5.
The one-way valve 7-6 is arranged at the front end of the air inlet channel 7-5, and the tail end of the air inlet channel 7-5 is positioned at the rear end position of the mixing cavity 7-3 and is positioned at the bottom of the foam nozzle 7-2.
The front end of the flange sleeve 11 is provided with a dustproof sheet 13 corresponding to the tooth body 2, and the front end of the dustproof sheet 13 is contacted with the tooth body 2; a plurality of sealing holes are formed in the flange sleeve 11, O-shaped sealing rings I8 are arranged in the sealing holes in the contact surface of the flange sleeve 11 and the tooth body 2, and O-shaped sealing rings II 9 are arranged in the sealing holes in the contact surface of the flange sleeve 11 and the inner cavity of the pick holder 5.
The spring shock absorption device 14 comprises a V-shaped dome spring 14-1, a common spring 14-2, a spring pad 14-3 and a stud 14-4, the V-shaped dome spring 14-1 and the common spring 14-2 are fixed at the rear part of the inner cavity of the pick box 5 through the stud 14-4, the top of the V-shaped dome spring 14-1 is in contact with the tail end of the pick body 2 and is arranged in a semicircular structure, the length of the common spring 14-2 is smaller than that of the V-shaped dome spring 14-1, and the spring pad 14-3 is installed at the front end of the common spring 14-2.
The pick box 5 is provided with a leakage hole 15 communicated with the inner cavity of the pick box 5, and the leakage hole is used for avoiding the damage to the pick box caused by overlarge pressure in the inner cavity of the pick box 5.
And annular grooves for communicating with the high-pressure jet generator 6 and the foam generator 7 are formed at two ends of the radial flow passage 4, and the inner diameter of each annular groove is larger than that of the radial flow passage 4.
Principle of operation
When the cutting pick is in a state of not cutting rocks, the pick body 2 is acted by the force of the jet high pressure, the foam high pressure and the spring damping device 14 in the cutting pick seat 5, so that the shaft shoulder of the pick body 2 is abutted to the annular bulge of the flange sleeve 11, the high-pressure jet flow channel is closed at the moment, the high-pressure foam channel is connected with the radial flow channel 4, and the foam dust removal is in an open state. High-pressure foam liquid enters a high-pressure foam inner cavity through a pipeline, the foam liquid is accelerated due to the contraction of a foam nozzle 7-2 to form high-speed high-pressure foam liquid, negative pressure is formed at the inner cavity of the mixing cavity, external air enters the mixing cavity through an air inlet channel 7-5 and a one-way valve 7-6 under the action of the negative pressure, collides with the foam liquid and is mixed, the rapid generation of foam and the increase of the volume of foam vacuole are completed, and then the foam is sprayed out along a nozzle 12 to extinguish dust.
Then, when cutting hard rock, the tooth body 2 receives the rock resistance and moves backward wholly, and the double-screw bolt top that supports in spring damping device 14 is reached to tooth body 2 tail end, owing to have spring damping device 14's second grade buffering shock attenuation, can effectually reduce the impact destruction to the toothholder structure. At the moment, the high-pressure foam channel is closed, the high-pressure jet flow channel is connected with the radial flow channel 4, and the high-pressure jet flow assists in breaking rock to be in an open state, so that the automatic switching function is realized. The high-pressure jet flow enters the high-pressure water cavity 6-1 through the pipeline, the pressure is rapidly increased due to the existence of the stepped pressurizing cavity 6-2, the flow speed is increased, and the self-pressurization is completed. The jet flow after boosting can generate high-frequency water hammer pressure after passing through the oscillation cavity 6-3, the effects of stress wave superposition, reflection and the like in the rock can aggravate rock breaking and fatigue failure, and the auxiliary effect is far stronger than that of the common jet flow. And the high-pressure jet can timely and accurately pass through the nozzle 12, so that the sprayed high-pressure water can timely generate cracks to assist the cutting pick in rock breaking, and the maximum auxiliary effect can be achieved on the premise of not reducing the strength of the cutting tip body 1 because the target distance of the nozzle 12 is short. And the nozzle 12 may be flushed open if there is a blockage.
When the cutting tooth is unloaded and stressed after being separated from the rock, the tooth body 2 is acted by high pressure of jet flow, high pressure of foam and the force of the spring damping device 14 in the cutting tooth seat 5, the tooth body 2 moves forwards, the shaft shoulder of the tooth body 2 is abutted to the annular bulge of the flange sleeve 11, the high-pressure jet flow is automatically switched to high-pressure foam, and dust can be inhibited to the maximum extent because the nozzle 12 is close to a dust outlet point.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides an automatic supplementary broken rock of high-pressure jet and foam dust suppression pick device which characterized in that: comprises a cutting pick, a high-pressure jet generator (6) and a foam generator (7); the cutting pick comprises a cutting tip body (1), a pick body (2) and a cutting pick seat (5) which are coaxially fixed together in sequence; the blade tip body (1) is fixed at the center of the front end of the tooth body (2), the tail end of the tooth body (2) extends into the inner cavity of the pick holder (5), a spring damping device (14) corresponding to the tail end of the tooth body (2) is arranged in the inner cavity of the pick holder (5), a flange sleeve (11) fixed with the pick holder (5) is sleeved outside the pick body (2), a stepped shaft part corresponding to the flange sleeve (11) is formed on the gear body (2), the tooth body (2) can move in the inner cavity of the pick box (5) and the inner cavity of the flange sleeve (11) along the axial direction, a central water channel (3) is arranged at the axis of the tooth body (2), the tail end of the central water channel (3) is vertically communicated with a radial flow channel (4), the side surface of the front end of the tooth body (2) is provided with a conical nozzle (12) which is communicated with the central water channel (3) and has an inner taper, the inner diameter of the radial flow channel (4) is smaller than that of the central water channel (3); the high-pressure jet generator (6) and the foam generator (7) are arranged in the pick box (5) in parallel and are used for being communicated with the radial flow channel (4), and when the radial flow channel (4) is communicated with one of the high-pressure jet generator (6) and the foam generator (7), the other one is not communicated with the radial flow channel (4).
2. The automatic high-pressure jet assisted rock breaking and foam dust suppression cutting pick device as claimed in claim 1, wherein the high-pressure jet generator (6) comprises a high-pressure water cavity (6-1), a stepped pressurizing cavity (6-2), an oscillating cavity (6-3) and a high-pressure water inlet runner (6-4), and the high-pressure water cavity (6-1), the stepped pressurizing cavity (6-2), the oscillating cavity (6-3) and the high-pressure water inlet runner (6-4) are communicated with each other in sequence.
3. The automatic high-pressure jet assisted rock breaking and foam dust removing pick device as claimed in claim 2, wherein the stepped pressurizing cavity (6-2) is divided into a first part pressurizing cavity, a second part pressurizing cavity, a third part pressurizing cavity and a fourth part pressurizing cavity, the diameters of which become smaller from back to front; the first part of pressurizing cavity and the third part of pressurizing cavity are gradually contracted funnel-shaped cavities; the second part of the pressurizing cavity and the fourth part of the pressurizing cavity are cylindrical cavities, and the diameter of the fourth part of the pressurizing cavity is the same as that of the high-pressure water inlet runner (6-4).
4. An automatic high pressure jet assisted rock breaking and foam dust removal pick device as claimed in claim 2, characterized in that the front and rear ends of the oscillating chamber (6-3) are conical cavities and the middle part is a cylindrical cavity with a diameter equal to the diameter of the conical bottom.
5. An automatic high-pressure jet assisted rock breaking and foam dust removal pick device as claimed in claim 1, wherein the foam generator (7) comprises a high-pressure foam inner cavity (7-1), a foam nozzle (7-2), a mixing cavity (7-3), a foam inlet flow passage (7-4), an air inlet passage (7-5) and a one-way valve (7-6); the high-pressure foam nozzle is characterized in that the high-pressure foam inner cavity (7-1), the foam nozzle (7-2), the mixing cavity (7-3) and the foam inlet flow passage (7-4) are sequentially communicated with one another, the side wall of the mixing cavity (7-3) is communicated with an air inlet channel (7-5), and a one-way valve (7-6) is arranged in the air inlet channel (7-5).
6. An automatic high-pressure jet assisted rock breaking and foam dust removal pick device as claimed in claim 5, characterized in that the one-way valve (7-6) is mounted at the front end of the air inlet channel (7-5), the end of the air inlet channel (7-5) is located at the rear end position of the mixing chamber (7-3) and at the bottom of the foam nozzle (7-2).
7. An automatic high-pressure jet assisted rock breaking and foam dust removing pick device as claimed in claim 1, characterized in that the front end of the flange sleeve (11) is provided with a dust-proof sheet (13) corresponding to the pick body (2), and the front end of the dust-proof sheet (13) is contacted with the pick body (2); a plurality of sealing holes are formed in the flange sleeve (11), O-shaped sealing rings I (8) are arranged in the sealing holes in the contact surface of the flange sleeve (11) and the tooth body (2), and O-shaped sealing rings II (9) are arranged in the sealing holes in the contact surface of the flange sleeve (11) and the inner cavity of the pick seat (5).
8. An automatic high-pressure jet assisted rock breaking and foam dust suppression cutting pick device as claimed in claim 1, wherein the spring shock absorption device (14) comprises a V-shaped dome spring (14-1), a common spring (14-2), a spring pad (14-3) and a stud (14-4), the V-shaped dome spring (14-1) and the common spring (14-2) are fixed at the rear part of the inner cavity of the pick holder (5) through the stud (14-4), the top of the V-shaped dome spring (14-1) is contacted with the tail end of the pick body (2) and is arranged in a semicircular structure, the length of the common spring (14-2) is smaller than that of the V-shaped dome spring (14-1), and the spring pad (14-3) is mounted at the front end of the common spring (14-2).
9. An automatic high pressure jet assisted rock breaking and foam dust removal pick device as claimed in claim 1, characterised in that the pick holder (5) is provided with a leak hole (15) communicating with the inner cavity of the pick holder (5).
10. An automatic high pressure jet assisted rock breaking and foam dust removal pick device as claimed in claim 1, characterized in that the radial flow channel (4) is formed at both ends with an annular groove for communicating with the high pressure jet generator (6) and the foam generator (7), the inner diameter of the annular groove being larger than the inner diameter of the radial flow channel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254223.7A CN114151082B (en) | 2021-10-27 | 2021-10-27 | Automatic high-pressure jet auxiliary rock breaking and foam dust suppression cutting pick device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254223.7A CN114151082B (en) | 2021-10-27 | 2021-10-27 | Automatic high-pressure jet auxiliary rock breaking and foam dust suppression cutting pick device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114151082A true CN114151082A (en) | 2022-03-08 |
| CN114151082B CN114151082B (en) | 2023-12-12 |
Family
ID=80458265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111254223.7A Active CN114151082B (en) | 2021-10-27 | 2021-10-27 | Automatic high-pressure jet auxiliary rock breaking and foam dust suppression cutting pick device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114151082B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264632A (en) * | 1968-07-16 | 1972-02-23 | ||
| ATA116685A (en) * | 1985-04-18 | 1986-06-15 | Voest Alpine Ag | DEVICE FOR INTERMITTENTLY PUTTING AXIAL SLIDING CHISELS OF A SCRAPER HEAD WITH PRESSURE |
| US4664450A (en) * | 1983-03-02 | 1987-05-12 | Padley & Venables Limited | Holder for a pick, and the combination of a pick and holder |
| EP0229238A1 (en) * | 1985-12-13 | 1987-07-22 | Boart International Limited | Mining tool for winning minerals, particularly coal |
| CN86206244U (en) * | 1986-08-26 | 1988-08-24 | 中国矿业学院 | Automatic control hydraulic pick |
| DE19729053A1 (en) * | 1997-07-08 | 1999-01-14 | Rag Ag | Dust-suppression nozzle for tunnelling and underground mining |
| CN101251025A (en) * | 2008-04-08 | 2008-08-27 | 中国矿业大学 | Coal mine down-hole foam dedusting system |
| CN102434187A (en) * | 2011-12-01 | 2012-05-02 | 康立杰 | Foam dust suppression system and foam dust suppression method for mine excavation |
| US8267482B1 (en) * | 2011-05-06 | 2012-09-18 | Hall David R | Foam configured to suppress dust on a surface to be worked |
| CN103174421A (en) * | 2013-03-11 | 2013-06-26 | 中国矿业大学 | Automatic control hydraulic rock breaking pick |
| CN103195429A (en) * | 2013-03-11 | 2013-07-10 | 中国矿业大学 | High-pressure water jet auxiliary cutting mechanism of heading machine |
| USRE44427E1 (en) * | 1999-03-03 | 2013-08-13 | Vermeer Manufacturing Company | Apparatus for directional boring under mixed conditions |
| CN103939096A (en) * | 2014-02-25 | 2014-07-23 | 中国矿业大学 | Heading machine internal foam-spraying dedusting system |
| CN103939095A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Valve control direct acting type rock breaking pick |
| US20150115690A1 (en) * | 2013-10-24 | 2015-04-30 | Rusmar Incorporated | Process for applying rock dust to a mine wall |
| CN106050232A (en) * | 2016-06-22 | 2016-10-26 | 中国矿业大学 | Water-saving efficiency-increased hydraulic cutting pick |
| WO2017020519A1 (en) * | 2015-08-05 | 2017-02-09 | 中国矿业大学 | Pre-mixed abrasive and water jet united cutting tooth type roller of coal mining machine |
| CN106837327A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of water-saving and synergistic automatic control hydraulic cutterhead |
| CN107620607A (en) * | 2017-09-12 | 2018-01-23 | 中国矿业大学 | A kind of fully mechanized workface step subzone of atomization dust removal method |
| CN108775245A (en) * | 2018-04-25 | 2018-11-09 | 中国矿业大学 | A kind of controllable pressure injection apparatus and its method based on hydraulic accumulator |
| CN109681201A (en) * | 2018-12-17 | 2019-04-26 | 中国矿业大学 | Negative-pressure ward and foam are caught and comprehensive function dust-extraction unit |
| CN111828000A (en) * | 2020-07-23 | 2020-10-27 | 中国矿业大学 | Water jet impact and cutting tooth combined power rock breaking and cutting mechanism of heading machine |
-
2021
- 2021-10-27 CN CN202111254223.7A patent/CN114151082B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264632A (en) * | 1968-07-16 | 1972-02-23 | ||
| US4664450A (en) * | 1983-03-02 | 1987-05-12 | Padley & Venables Limited | Holder for a pick, and the combination of a pick and holder |
| ATA116685A (en) * | 1985-04-18 | 1986-06-15 | Voest Alpine Ag | DEVICE FOR INTERMITTENTLY PUTTING AXIAL SLIDING CHISELS OF A SCRAPER HEAD WITH PRESSURE |
| US4735458A (en) * | 1985-04-18 | 1988-04-05 | Voest-Alpine Aktiengesellschaft | Device for intermittently subjecting axially shiftable bits of a cutting head to the action of pressurized fluids |
| EP0229238A1 (en) * | 1985-12-13 | 1987-07-22 | Boart International Limited | Mining tool for winning minerals, particularly coal |
| CN86206244U (en) * | 1986-08-26 | 1988-08-24 | 中国矿业学院 | Automatic control hydraulic pick |
| DE19729053A1 (en) * | 1997-07-08 | 1999-01-14 | Rag Ag | Dust-suppression nozzle for tunnelling and underground mining |
| USRE44427E1 (en) * | 1999-03-03 | 2013-08-13 | Vermeer Manufacturing Company | Apparatus for directional boring under mixed conditions |
| CN101251025A (en) * | 2008-04-08 | 2008-08-27 | 中国矿业大学 | Coal mine down-hole foam dedusting system |
| US8267482B1 (en) * | 2011-05-06 | 2012-09-18 | Hall David R | Foam configured to suppress dust on a surface to be worked |
| CN102434187A (en) * | 2011-12-01 | 2012-05-02 | 康立杰 | Foam dust suppression system and foam dust suppression method for mine excavation |
| CN103174421A (en) * | 2013-03-11 | 2013-06-26 | 中国矿业大学 | Automatic control hydraulic rock breaking pick |
| CN103195429A (en) * | 2013-03-11 | 2013-07-10 | 中国矿业大学 | High-pressure water jet auxiliary cutting mechanism of heading machine |
| US20150115690A1 (en) * | 2013-10-24 | 2015-04-30 | Rusmar Incorporated | Process for applying rock dust to a mine wall |
| CN103939096A (en) * | 2014-02-25 | 2014-07-23 | 中国矿业大学 | Heading machine internal foam-spraying dedusting system |
| CN103939095A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Valve control direct acting type rock breaking pick |
| WO2017020519A1 (en) * | 2015-08-05 | 2017-02-09 | 中国矿业大学 | Pre-mixed abrasive and water jet united cutting tooth type roller of coal mining machine |
| CN106050232A (en) * | 2016-06-22 | 2016-10-26 | 中国矿业大学 | Water-saving efficiency-increased hydraulic cutting pick |
| WO2017219613A1 (en) * | 2016-06-22 | 2017-12-28 | 中国矿业大学 | Water-saving and efficiency-increasing hydraulic cutting pick |
| CN106837327A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of water-saving and synergistic automatic control hydraulic cutterhead |
| CN107620607A (en) * | 2017-09-12 | 2018-01-23 | 中国矿业大学 | A kind of fully mechanized workface step subzone of atomization dust removal method |
| CN108775245A (en) * | 2018-04-25 | 2018-11-09 | 中国矿业大学 | A kind of controllable pressure injection apparatus and its method based on hydraulic accumulator |
| CN109681201A (en) * | 2018-12-17 | 2019-04-26 | 中国矿业大学 | Negative-pressure ward and foam are caught and comprehensive function dust-extraction unit |
| CN111828000A (en) * | 2020-07-23 | 2020-10-27 | 中国矿业大学 | Water jet impact and cutting tooth combined power rock breaking and cutting mechanism of heading machine |
Non-Patent Citations (4)
| Title |
|---|
| LIU, SONGYONG ET AL.: "Experimental Investigation of Hard Rock Breaking Using a Conical Pick Assisted by Abrasive Water Jet", 《ROCK MECHANICS AND ROCK ENGINEERING》, pages 4221 - 4230 * |
| SONGYONG LIU ET AL.: "Drilling Performance of Rock Drill by High-Pressure Water Jetunder Different Configuration Modes", 《SHOCK AND VIBRATION》, pages 1 - 15 * |
| 李洪盛等: "自激振荡脉冲射流破岩性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》, pages 1 - 175 * |
| 李烈等: "高压水射流辅助掘进机截齿截割实验研究", 《机械设计与制造》, pages 78 - 81 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114151082B (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103174421B (en) | Automatic control hydraulic rock breaking pick | |
| CN1959058B (en) | Rotary dual jet flows boring method under high pressure | |
| CN109973106B (en) | Development machine for breaking rock by using liquid nitrogen and ice particle jet flow | |
| CN201221317Y (en) | PDC drill bit | |
| CN208167854U (en) | A kind of environment-friendly type hydraulic breaking hammer | |
| CN107165651A (en) | A kind of Hob for cutting rock, cutter head of shield machine and shield machine | |
| CN101586441A (en) | High-pressure water jet system and method for drilling and enlarging holes on coal bed | |
| CN101532391A (en) | In-hole drilling tool integrating drilling, slotting and punching coal seam and using method thereof | |
| CN103334723B (en) | A kind of underground coal mine waterpower slot self-suction abrasive jet flow generating means and method | |
| CN205823287U (en) | Ultrahigh pressure auxiliary rock TBM cutterhead | |
| CN105089500A (en) | Coal mine downhole hydraulic jet tree-shaped drill hole way-type drilling unit | |
| CN111794682A (en) | Passive extrusion type pulse coal dust jet flow coal breaking pressure relief and permeability increasing device and using method thereof | |
| CN201391331Y (en) | Integral in-hole drilling tool for drilling slotting punched hole of coal seam | |
| CN105804658A (en) | Impact breaking type PDC bit | |
| CN110924971A (en) | Cavitation jet flow assisted rock breaking TBM cutter head and rock breaking method | |
| CN104564065A (en) | Novel rotating abrasive water jet cutting tooth | |
| CN101864899B (en) | Self-control shooting distance water jet drill | |
| CN114151082A (en) | Automatic high-pressure jet flow auxiliary rock breaking and foam dust suppression cutting pick device | |
| CN102268966A (en) | Hard rock crushing drill bit and method for crushing hard rock | |
| CN211144502U (en) | Cavitation water jet auxiliary rock breaking TBM cutter head for extremely hard rock | |
| CN102943676A (en) | Concrete cutting advanced cutter for shield tunneling machine | |
| CN203471588U (en) | Novel rotating abrasive water jet cutting tooth | |
| CN113266351B (en) | Water jet assisted tunneling and anchoring machine and tunneling method | |
| CN209761345U (en) | Self-advancing type porous jet drill bit with supporting plate | |
| CN205100877U (en) | Colliery combination of arborescent drilling of hydraulic jet in pit drilling tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231102 Address after: 221116 No. 1 Tongshan University Road, Xuzhou City, Jiangsu Province Applicant after: CHINA University OF MINING AND TECHNOLOGY Applicant after: JIANGSU ZHONGJI MINE EQUIPMENT Co.,Ltd. Address before: 221000 No. 1 Tongshan University Road, Xuzhou City, Jiangsu Province Applicant before: CHINA University OF MINING AND TECHNOLOGY |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |