A kind of pulsing jet and mechanical shock combined-breaking rock mechanism
Technical field
The present invention relates to a kind of pulsing jets and mechanical shock combined-breaking rock mechanism, and it is high to be best suited for Polodyakonov coefficient coefficient
Rock-boring is broken.
Background technology
2015,《BP world energy sources statistical yearbooks》It points out:China is still the world's largest energy-consuming state, accounts for the whole world
23% and the whole world of consumption figure have a net increase of long 61%;Coal resources consumption accounts for the 66.03% of total quantity consumed, following one section very long
There is irreplaceable status as China's main body energy in period.《National Program for Medium-to Long-term Scientific and Technological Development
(2006~2020)》It explicitly points out:There is an urgent need for strengthen coal resources safety high-efficiency mining energetically and using technical research, be distinctly claimed
Primary study deep layer and bad ground ore body mining technique.2011, National Energy Board's publication《National energy science and technology " 12
Five " planning》The Efficient Development for explicitly pointing out coal resources under complex geological condition is main research direction from now on, it is desirable that research and development
Meet multi-mode stone head driving, technology and equipment under China's complex stratum condition.
At present, coal mining gradually develops to deep layer and bad ground, to deep layer, bad ground coal resources safety
High efficient mining technology and equipment propose higher requirement and new challenge.Due to the increase of crustal stress, usual deep layer, intricately
Elasticity modulus, hardness and breakdown strength of layer coal petrography etc. increase therewith, and uniaxial compressive strength often reaches more than 150MPa.Coal petrography
Drilling is the premise of the engineerings efficient implementation such as ore body explosion, Depressurized mining and roadway support, and hard drilling in coal and rock efficiency it is low,
The problems such as Dust Capacity is big directly constrains the Efficient Development of the ore bodies resources such as deep layer, bad ground coal.At present, underground coal petrography bores
Hole is mainly using machine cut and impact two ways:Tool wear is serious during machine cut broken rock, consumption is big, is mainly used for
The coal petrography of broken Polodyakonov coefficient coefficient f≤8 of cutting;Mechanical shock can be with shatter most coal petrography, but in hard coal petrography (f>15)
Middle work there are button serious wear with come off, efficiency of breaking rock is low and Dust Capacity is big the problems such as, greatly reduce mechanical shock
How rock breaking capacity, efficiency and service life of equipment and reliability realize that safe and efficient crush of hard coal petrography has become
The critical issue and difficult point of the ore bodies resource high-efficiencies such as deep layer, bad ground coal exploitation.
High-pressure water jet broken rock is a utilization " water arrow " impact grinding and coal petrography crushing technology the effects that erosion at a high speed,
Its booster action is it is verified that cutter rock breaking capacity can be improved, tool life, but continuous high-pressure water jet consumption
Water conference causes coal petrography crushing mechanism Work places to generate the ponding of large area, and equipment is caused to be difficult to work normally.Common
Continuous water jet auxiliary rock only generates single " water hammer pressure ", and rock fracture in dynamic indentation ability is limited, and subsequent " stagnation pressure "
It is low to be difficult to aggravate hard coal petrography internal injury and crack propagation, it is caused to fail to obtain widely in hard coal petrography crushes equipment
Using.Pulsing jet impact grinding coal petrography ability can be generated more much stronger than solid jet, pulsing jet auxiliary rock with intermittence
The effects that a " water hammer pressure ", multi-source compression stress wave is superimposed inside coal petrography, reflects, causes coal petrography volumetric fracture and fatigue to break
It is bad.In addition, using the low-temperature impact of pulsing jet and the low characteristic of water consumption, button wear rate and consumption can be reduced, is extended
Button service life improves mechanical shock broken rock operating condition.
Invention content
It is insufficient existing for prior art the purpose of the present invention is overcoming, a kind of pulsing jet is provided and is combined brokenly with mechanical shock
Rock can efficiently realize the high rock-boring of Polodyakonov coefficient coefficient or broken, reduce mechanical shock broken rock difficulty and rock
The dust concentration that stone crushes extends the service life of mechanical button.
The technical solution adopted by the present invention is:A kind of pulsing jet and mechanical shock combined-breaking rock mechanism, including guide rail, push away
Into oil cylinder, hydraulic shock power head, drilling rod, drill bit, Dynamic Seal combination set, static seal transition sleeve, circlip, static sealing ring,
Dynamic seal ring and drill steel support seat, the drill steel support seat are fixed on guide rail, and cylinder body and the guide rail of propelling cylinder are hinged, and are promoted
The piston rod of oil cylinder and the housing hinge of hydraulic shock power head, hydraulic shock power head are slidably mounted on guide rail, hydraulic punch
It hits power head output shaft by screw thread with drilling rod one end to be connected, the other end of drilling rod is connected by screw thread with drill bit, drilling rod
Hole across on drill steel support seat, Dynamic Seal combination set are fixed by screws on hydraulic shock power casing, dynamic sealing group
The high pressure water water inlet of trap, hydraulic shock power head output shaft internal water channel, drilling rod internal water channel, drill bit internal water channel, from
The jet stream button oscillation chamber of Induced Oscillation jet stream button, which is sequentially connected, to be connect, and drilling rod is connect with hydraulic shock power head output shaft, drill bit
End is internal to be fixedly mounted static seal transition sleeve by circlip.
Preferably, the Dynamic Seal combination set housing is fixed on the housing of hydraulic shock power head by trip bolt
On, Dynamic Seal combination covers inner sleeve and is fixed on that Dynamic Seal combination set is outer to be put on by trip bolt, Dynamic Seal combination set housing and interior
It covers corresponding position and is equipped with high pressure water water inlet, it is quiet by end face static sealing ring completion high pressure water that Dynamic Seal combination covers jacket and inner sleeve
Sealing, the inner surface of Dynamic Seal combination set inner sleeve are handled using Hard Chromium Plating Technology.
Preferably, the hydraulic shock power head output shaft is internally provided with square water channel and multiple output shaft dynamic sealings
Enclose groove.
Preferably, be machined with shaft shoulder I and shaft shoulder II on the drilling rod, the outer diameter of shaft shoulder I and shaft shoulder II respectively with hydraulic pressure
Through matching outside end face at dynamic impact problem head output axis connection external screw thread adjacent place, drill bit connection internal thread.
Preferably, regular on the drill bit inlay multiple mechanical buttons and self-oscillation flow jet flow button, from exciting
The top for swinging jet stream button lags behind mechanical ball tooth tip certain distance, and bit body is circumferentially machined with multiple dregs guiding grooves.
Preferably, the jet stream button alloy head of the self-oscillation flow jet flow button is embedded on jet stream button denticle, penetrate
Tiny water channel I is machined with inside stream button alloy head, jet stream button denticle bottom processes tiny water channel II, jet stream button alloy head
Diameter about 1mm~2mm of chamber, tiny water channel I and tiny water channel II is vibrated with jet stream button denticle Inner Constitution jet stream button, carefully
The preferred value range 10 of angle between draw I and jet stream button alloy head center lineo~15o。
Preferably, the hydraulic shock power head output shaft, Dynamic Seal combination set jacket and inner sleeve, drilling rod, quiet close
Seal transition sleeve, the connection of hydraulic shock power head output shaft, Dynamic Seal combination set jacket and inner sleeve, drilling rod, static seal transition sleeve
Position seals part is using O-ring seal, the wherein preferred nitrile rubber material of static sealing ring and end face static sealing ring, dynamic seal ring
Preferably polytetrafluoroethylene material.
Preferably, the static seal transition sleeve inner surface is handled using Hard Chromium Plating Technology.
Water inlet of the high pressure water of high-pressure hydraulic pump output of the present invention by Dynamic Seal combination set jacket and inner sleeve is introduced to liquid
The internal water channel of dynamic impact problem head output shaft is pressed, and then drilling rod internal water channel, drill bit internal are introduced to by static seal transition sleeve
Water channel and self-oscillation flow jet flow button oscillation chamber.When hydraulic shock power head works, there is rotation to turn round simultaneously for drilling rod and drill bit
Power and intermittence impact force, propelling cylinder push hydraulic shock power head, drilling rod and drill bit to travel forward and provide centainly
Propulsive force and space rate, and then drill bit frequent impact rotation fractured rock.Propelling cylinder piston rod stretches out advancing hydraulic pressure impact
Power head, drilling rod and bore first run of steel and complete primary drilling, unclamp hydraulic shock power head output shaft and drilling rod it
Between threaded connection, the retraction of propelling cylinder piston rod makes hydraulic shock power head retract initial position, accesses an other root architecture
With the identical drilling rod of size, it is complete that propelling cylinder piston rod stretches out advancing hydraulic pressure dynamic impact problem head, drilling rod and drill bit again
Into primary drilling, the recovery process of drilling rod is just opposite after the completion of rock-boring.It is to utilize machinery using hydraulic shock power head
The rock fracture in dynamic indentation characteristic stronger than machine cut rock breaking capacity is to utilize high-voltage pulse jet impulse using self-oscillation flow jet flow button
The characteristics of rock breaking capacity is better than solid jet, and then machinery and rock breaking by water jet characteristic can be played to the maximum extent.High pressure water
Pump output high pressure water through Dynamic Seal combination set water inlet, hydraulic shock power head output shaft internal water channel, drilling rod internal water channel,
The high-voltage pulse jet stream that drill bit internal water channel and self-oscillation flow jet flow button are formed can advanced impact rock, rock interior hair
Life damages and intensity declines, and substantially reduces mechanical button broken rock difficulty on drill bit, extends mechanical button service life, improve
Mechanical button rock fracture in dynamic indentation efficiency and ability realize the efficiency crushing of solid rock.
The beneficial effects of the present invention are:The present invention is using full hydraulic drive, and overall dimensions are small, simple and compact for structure, peace
Dress, convenient disassembly, propelling cylinder and hydraulic shock power head is small, power is big, high-pressure water seal is simple, reliable, and pulse is penetrated
The high rock efficiency crushing of Polodyakonov coefficient coefficient can be realized under stream booster action.The pulse that self-oscillation flow jet flow button generates is penetrated
Stream can carry out impact failure or damage to rock in advance, reduce the shock resistance breaking capacity of solid rock, drop to the maximum extent
The low difficulty of mechanical button impact grinding solid rock improves the ability and effect of broken rock mechanical shocks drilling solid rock
Rate.In addition, pulsing jet can not only inhibit the dust that catalase generates well, additionally it is possible to reduce mechanical button impact cutting
The difficulty of broken solid rock, the service life of prolonged mechanical button improve the safe efficient exploitation of energy resources, to China
The sustainable development in mine has important social effect.
Description of the drawings
Fig. 1 a are pulsing jet of the present invention and mechanical shock combined-breaking rock mechanism structure schematic diagram;
Fig. 1 b are the vertical views of Fig. 1 a;
Fig. 1 c are enlarged drawings at A in Fig. 1 a;
Fig. 2 is drilling rod sectional view of the present invention;
Fig. 3 a are drill bit structure schematic diagrames of the present invention;
Fig. 3 b are the side views of Fig. 3 a;
Fig. 4 is Dynamic Seal combination set sectional view of the present invention;
Fig. 5 is hydraulic shock power head output shaft sectional view of the present invention;
Fig. 6 is self-oscillation flow jet flow pick sectional view of the present invention.
In figure:1-guide rail;2-propelling cylinder;3-hydraulic shock power head;4-drilling rod;5-drill bit;6-dynamic sealing
Combination set;7-static seal transition sleeve;8-circlip;9-static sealing ring;10-dynamic seal ring;11-drill steel support seat;3-
1-hydraulic shock power head output shaft;4-1-drilling rod shaft shoulder I;4-2-drilling rod connection internal thread;4-3-drilling rod circlip
Slot;4-4-drilling rod internal water channel;4-5-drilling rod shaft shoulder II;4-6-drilling rod connection external screw thread;4-7-drilling rod static sealing ring is recessed
Slot;5-1-machinery button;5-2-dregs guiding groove;5-3-self-oscillation flow jet flow button;5-4-drill bit connection internal thread;5-5—
Drill bit internal water channel;5-6-drill bit circlip slot;6-1-Dynamic Seal combination set housing;6-2-Dynamic Seal combination set inner sleeve;
6-3-end face static sealing ring;6-4-high pressure water water inlet;6-5-trip bolt;3-1-1-output shaft dynamic seal ring groove;
3-1-2-output shaft internal water channel;3-1-3-output axis connection external screw thread;3-1-4-output shaft static sealing ring groove;5-3-
1-jet stream button alloy head;5-3-2-jet stream button denticle;5-3-3-jet stream button oscillation chamber;5-3-4-tiny water channel I;
5-3-5-tiny water channel II.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
A kind of pulsing jet of the present invention and mechanical shock combined-breaking rock mechanism, mainly include guide rail 1, propelling cylinder 2, liquid
It presses dynamic impact problem head 3, drilling rod 4, drill bit 5, Dynamic Seal combination set 6, static seal transition sleeve 7, circlip 8, static sealing ring 9, move
Sealing ring 10, drill steel support seat 11.The cylinder body of propelling cylinder 2 is hinged with guide rail 1, the piston rod of propelling cylinder 2 and hydraulic shock
The housing hinge of power head 3, the housing of hydraulic shock power head 3 are slidably mounted on guide rail 1, and one end of drilling rod 4 passes through drilling rod
Connect internal thread 4-2, output axis connection external screw thread 3-1-3 and hydraulic shock power head output shaft 3-1 (hereinafter referred to as output shaft)
Connection, the other end of drilling rod 4 connects external screw thread 4-6 by drilling rod, drill bit connects internal thread 5-4 and connect with drill bit 5.Dynamic sealing group
Trap housing 6-1 is mounted on by screw on the housing of hydraulic shock power head 3, and Dynamic Seal combination set inner sleeve 6-2 passes through fastening
Screw 6-5 is mounted on Dynamic Seal combination set housing 6-1, Dynamic Seal combination set housing 6-1 and Dynamic Seal combination 6-2 pairs of inner sleeve of set
Position is answered to be equipped with high pressure water water inlet 6-4, passes through end between Dynamic Seal combination set housing 6-1 and Dynamic Seal combination set inner sleeve 6-2
Face static sealing ring 6-3 completes high pressure water static seal, the output of the high pressure water water inlet 6-4 and output shaft 3-1 of Dynamic Seal combination set 6
Axis internal water channel 3-1-2 passes through the dynamic seal ring 10 that is mounted in output shaft dynamic seal ring groove 3-1-1 and Dynamic Seal combination set
The inner surface dynamic Contact of inner sleeve 6-2 completes high pressure water dynamic sealing.Drilling rod 4 and output shaft 3-1 junctions, drill bit 5 and drilling rod 4
Junction respectively by be mounted on the circlip 8 of drilling rod circlip slot 4-3, drill bit circlip slot 5-6 be fixedly mounted it is quiet
Seal transition sleeve 7.The output shaft internal water channel 3-1-2 of 3 output shaft 3-1 of hydraulic shock power head, it drilling rod internal water channel 4-4, bores
Head internal water channel 5-5 is quiet on output shaft 3-1 static sealing ring grooves 3-1-4, drilling rod static sealing ring groove 4-7 by being mounted on
Sealing ring 9 completes high pressure water static seal with 7 inner surface Static Contact of static seal transition sleeve, and then high pressure water is introduced to drill bit 5
On the jet stream button oscillation chamber 5-3-3 of self-oscillation flow jet flow button 5-3 form pulsing jet.When certain pressure hydraulic oil accesses
When propelling cylinder 2 and hydraulic shock power head 3, propelling cylinder 2 is promoted comprehensively hydraulic shock power head 3, drilling rod 4 and drill bit 5,
Realize the mechanical button 5-1 impact rotation fractured rocks being mounted on drill bit 5, and rock debris is discharged by dregs guiding groove 5-2.When
The high pressure water access Dynamic Seal combination set 6 of certain pressure, output shaft internal water channel 3-1-2, drilling rod of the high pressure water through output shaft 3-1
Internal water channel 4-4, drill bit internal water channel 5-5, self-oscillation flow jet flow button 5-3 form pulsing jet, and then realize high-voltage pulse
Jet stream combines rock fracture in dynamic indentation with machinery button 5-1, improves mechanical shock rock breaking capacity, prolonged mechanical button 5-1 service lifes.It is complete
After the propulsion of Cheng Yijie drilling rods 4, the threaded connection between the output shaft 3-1 of hydraulic shock power head 3 and drilling rod 4 is unclamped, is promoted
The retraction of 2 piston rod of oil cylinder makes hydraulic shock power head 3 retract initial position, accesses an other root architecture and size is identical
Drilling rod 4,2 piston rod of propelling cylinder stretches out advancing hydraulic pressure dynamic impact problem head 3, drilling rod 4 and drill bit 5 again to be completed once to creep into,
The recovery process of drilling rod 4 is just opposite after the completion of rock-boring.
Operation principle:During using pulsing jet and mechanical shock combined-breaking rock mechanism broken rock, hydraulic pump system is given in tunnel
Propelling cylinder 2 and hydraulic shock power head 3 provide the oil with certain pressure, make 2 piston rod of propelling cylinder have propulsive force and
Space rate, 3 output shaft 3-1 of hydraulic shock power head have rotation torque and intermittence impact force.2 piston rod of propelling cylinder
Propulsive force and space rate are transferred to drill bit 5 through 3 housing of hydraulic shock power head, output shaft 3-1, drilling rod 4, and it is mechanical on drill bit to make
Button 5-1 contact squeeze rocks.The rotation torque and intermittence impact force of 3 output shaft 3-1 of hydraulic shock power head is passed through drilling rod 4
Drill bit 5 is handed to, makes mechanical button 5-1 rotary impact fractured rocks on drill bit 5.The high pressure water that high-pressure hydraulic pump provides is through dynamic sealing group
The high pressure water water inlet 6-4 of trap 6 passes through the square water channel inside 3 output shaft 3-1 of hydraulic shock power head, in drilling rod successively
Portion water channel 4-4, drill bit internal water channel 5-5, self-oscillation flow jet flow button 5-3 jet stream button oscillation chamber 5-3-3 form high rapid pulse
Rush jet stream.When broken rock mechanism accesses the oil and high pressure water of certain pressure simultaneously, machine on drill bit 5 can be realized in given appropriate parameter
The pulsing jet combined-breaking rock that tool button 5-1 and self-oscillation flow jet flow button 5-3 is formed improves mechanical button 5-1 rock fracture in dynamic indentation
Ability, prolonged mechanical button 5-1 service lifes reduce the dust concentration of catalase, improve the effect of broken rock mechanism rock drilling
Rate.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not
The available prior art of specific each component part is realized.