CN104653529B - The anti-solution cavity card pricker system of drill jumbo - Google Patents
The anti-solution cavity card pricker system of drill jumbo Download PDFInfo
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- CN104653529B CN104653529B CN201510073402.9A CN201510073402A CN104653529B CN 104653529 B CN104653529 B CN 104653529B CN 201510073402 A CN201510073402 A CN 201510073402A CN 104653529 B CN104653529 B CN 104653529B
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- valve
- propelling
- unloader
- impact
- oil
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- 239000011435 rock Substances 0.000 claims abstract description 81
- 230000008859 change Effects 0.000 claims abstract description 10
- 238000004080 punching Methods 0.000 claims description 22
- 241000218158 Clematis Species 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 42
- 239000012530 fluid Substances 0.000 description 15
- 230000002265 prevention Effects 0.000 description 10
- 238000005553 drilling Methods 0.000 description 7
- 230000000881 depressing effect Effects 0.000 description 6
- 240000002853 Nelumbo nucifera Species 0.000 description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002360 explosive Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
Abstract
The invention discloses the anti-solution cavity card pricker system of a kind of drill jumbo, wherein, advance reversal valve to be arranged between hydraulic pump and propelling cylinder, for regulating the duty of propelling cylinder；Air relief valve module is arranged between propelling reversal valve and propelling cylinder, in order to adjust the propelling pressure putting on propelling cylinder；The oil-in advancing unloader is arranged between air relief valve module and propelling cylinder, oil-out connected tank；Impact reversal valve is arranged between hydraulic pump and rock drill, to change the duty of the jump bit of rock drill；Choke valve module is arranged between impact reversal valve and rock drill, in order to adjust the frequency of impact of jump bit；The oil-in of impact unloader is arranged between choke valve module and jump bit, oil-out connected tank；First shuttle valve, in order to when the bore bit of rock drill enters solution cavity, makes propelling unloader connect respective depressurized circuit with impact unloader and carries out release.This system of the present invention, it is possible to prevent solution cavity card pricker.
Description
Technical field
The present invention relates to drill jumbo field, in particular it relates to a kind of drill jumbo
Anti-solution cavity card pricker system.
Background technology
In " Lanzhou University of Science & Technology's journal " in June, 2009 (the 3rd phase of volume 35) the 33rd～
Page 38 articles published " the automatic anti-blocking pricker control program of hydraulic gate " indicate common
Card pricker type include three types: I class card pricker-solution cavity card pricker, II class card pricker-gradual card pricker；
Group III card pricker-crack card pricker.
About I class card pricker-solution cavity card pricker, according to the record of article, when rock drill bit digs into suddenly
Solution cavity, bore bit is stuck by the rubble in solution cavity and the card pricker that causes, it is referred to as " solution cavity card pricker ".
When bore bit enters solution cavity district, because rock drill loses suddenly the propelling resistance of rock and turns pricker resistance
Square, causes propulsive force and turns pricker moment and can suddenly reduce, simultaneously advancing speed and suddenly increase.And
When in bore bit incision " solution cavity " district, crushed stone generation card pricker is instantaneous, propelling resistance and rotary resistance moment
Can suddenly increase again.
Seeing Fig. 1, it illustrates the change procedure of solution cavity card pricker, o is zero, abscissa
T is the time, and vertical coordinate p is system oil pressure.Wherein, t0For card pricker omen point time, t1For card
The pricker appearance point time, t2Pricker and propelling pressure point time is turned for maximum；ptFor creeping into oil pressure, pzFor
Revolution oil pressure, pz0Pricker pressure normal average value, p is turned for stably normal rock drillingz1Return for solution cavity card pricker
Turn the marginal value of pressure, pzmFor normally turning the maximum oil pressure of pricker.
The rubble that solution cavity card pricker is because in solution cavity is by stuck for bore bit caused, and rubble is often stuck in pricker
Head and the junction of drill steel, because the external diameter of bore bit is more than the external diameter of drill steel, so once there is this
Class card pricker, bore bit is difficult to extract.It was verified that this type of card pricker is a kind of card being most difficult to and disposing
Pricker fault.
For the problems referred to above, it is provided that a kind of hydraulic system being prevented from such card pricker has very
Important meaning.
Summary of the invention
The technical problem to be solved is to provide the anti-solution cavity card pricker system of a kind of drill jumbo
System, it is prevented from the generation of card pricker.
In order to solve above-mentioned technical problem, present invention employs following technical scheme: a kind of rock drilling
The anti-solution cavity card pricker system of chassis, wherein, the anti-solution cavity card pricker system of this drill jumbo includes:
Hydraulic pump, rock drill, propelling reversal valve, air relief valve module, advance unloader, propelling cylinder,
Impact reversal valve, choke valve module, impact unloader and the first shuttle valve, wherein,
Described propelling reversal valve is arranged between described hydraulic pump and described propelling cylinder, is used for adjusting
Save the duty of described propelling cylinder, to change the described rock drill being connected with its piston rod
Position；
Described air relief valve module is arranged between described propelling reversal valve and described propelling cylinder, uses
To adjust the propelling pressure putting on described propelling cylinder；
The oil-in of described propelling unloader is arranged on described air relief valve module and described propelling cylinder
Between, oil-out connected tank；
Described impact reversal valve is arranged between described hydraulic pump and described rock drill, to change
State the duty of the jump bit of rock drill；
Described choke valve module is arranged between described impact reversal valve and described rock drill, in order to
Adjust the frequency of impact of described jump bit；
The oil-in of described impact unloader be arranged on described choke valve module and described jump bit it
Between, oil-out connected tank；
One oil-in of described first shuttle valve receives from described propelling reversal valve and/or described punching
Hit the oil of reversal valve, another oil-in be arranged on described air relief valve module and described propelling cylinder it
Between, its oil-out respectively with the control port of described propelling unloader and described impact unloader
Control port is connected, in order to when the bore bit of described rock drill enters solution cavity, to make described propelling off-load
Valve is connected respective depressurized circuit with described impact unloader and is carried out release.
Preferably, the anti-solution cavity card pricker system of this drill jumbo also includes pressure switch and second
Shuttle valve, two oil-ins of described second shuttle valve are connected to the rod chamber of described propelling cylinder
On oil circuit and rodless cavity oil circuit, oil-out is connected with described pressure switch, pushes away described in working as
Enter unloader and described impact unloader off-load alarm.
Preferably, described propelling reversal valve and described impact reversal valve are the hands of three clematis stem
Dynamic reversal valve.
Preferably, the choke valve group that described choke valve module is formed by two choke valve parallel connections,
And the flow of two described choke valves is different, commutated by described impact reversal valve to adjust institute
State the frequency of impact of jump bit.
Preferably, the anti-solution cavity card pricker system of this drill jumbo also includes overflow valve, described overflow
Valve is connected with the oil-out of described hydraulic pump.
Preferably, it is connected between described air relief valve module and described propelling cylinder and has propelling pressure
Table.
Preferably, it is connected between described choke valve module and described jump bit and has surge table.
Preferably, the anti-solution cavity card pricker system of this drill jumbo also includes on-off control valve, described
On-off control valve is connected to, at the oil-in of described propelling unloader and described impact unloader, use
To control the break-make of described propelling unloader and described impact unloader.
Further, described on-off control valve is the Solenoid ball valve of two-position four-way.
Preferably, described propelling unloader and described impact unloader are two position three way directional control valve.
Compared with prior art, the beneficial effects of the present invention is: use the first shuttle valve to propelling
Unloader and impact unloader are controlled, when rock drill be in SBR, pre-punching and
Height raises when rushing state, advances unloader and impact unloader to be more than due to control port
The pressure of its spring preset pressure, so being maintained at the state of not off-load；And once bore bit enters
To solution cavity, then propelling pressure decreases below spring preset pressure, advances unloader to unload with impact
Lotus valve carries out off-load, so, stops when bore bit has just enter into solution cavity, effectively prevents card pricker existing
The generation of elephant.
Accompanying drawing explanation
When Fig. 1 is solution cavity card pricker, revolution oil pressure and the graph of a relation advancing oil pressure；
Fig. 2 is the schematic diagram of the anti-solution cavity card pricker system of the drill jumbo of the present invention, and it is in standard
Standby state；
Fig. 3 is the schematic diagram of the anti-solution cavity card pricker system of the drill jumbo of the present invention, and it is in pre-
Punching state；
Fig. 4 is the schematic diagram of the anti-solution cavity card pricker system of the drill jumbo of the present invention, and it is in height
Raise the state of punching；
Fig. 5 is the schematic diagram of the anti-solution cavity card pricker system of the drill jumbo of the present invention, and it is in gently
Push away state of gently rushing；
Fig. 6 is the schematic diagram of the anti-solution cavity card pricker system of the drill jumbo of the present invention, wherein, and chisel
Rock machine is in fallback state；
Fig. 7 is the structural representation of air relief valve module.
Detailed description of the invention
Below, in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not
As limitation of the invention.
As background section is previously mentioned, the card pricker of existing drill jumbo is broadly divided into molten
Hole card pricker, gradual card pricker and crack card pricker are (furthermore it is possible to see Zhou Zhihong, Ma Fei, Zhang Wen
Bright, Mao Jiling writes, " Underground Chisel Rock Equipment ", metallurgical industry publishing house,
ISBN7-5024-3582-4,113-115 page, about the introduction of solution cavity card pricker).This of the present invention
Plant hydraulic system, the problem mainly solving solution cavity card pricker.Further, the present invention's is this anti-
Card pricker system can apply to the BOOMER rock drilling series chassis of Atlas Copco, as
B281, B282, XL3D, K111, K41 series.Certainly, this anti-sticking pricker system, it is possible to
With by those skilled in the art according to circumstances, and it is applicable to the drill jumbo of other company/models.
The rock drilling mechanism of rock drilling system is: propelling pressure acts on propelling cylinder, and propelling cylinder makes
Rock drill moves；Surge acts on the internal hammer striker of rock drill so that jump bit comes
Returning and move back and forth and tap bit shank generation shock wave, drill steel transmits this shock wave to bore bit, rock
Contact bore bit is broken.
Seeing Fig. 2, the anti-solution cavity card pricker system of the drill jumbo of the present invention includes hydraulic pump (figure
Not shown in, represent the oil-out of hydraulic pump with the P in scheming), rock drill 15, advance reversal valve
6, air relief valve module 14, propelling unloader 3, propelling cylinder 8, impact reversal valve 9, throttling
Valve module, impact unloader 4 and the first shuttle valve 5.T in this figure, represents oil sump tank.
The oil-out P of hydraulic pump is communicated with the first branch road A1 and the second branch road A2, and wherein first
Branch road A1 connects with the oil-in advancing reversal valve 6, the second branch road A2 and impact commutation
One oil-in connection of valve 9.For avoiding this hydraulic system pressure excessive, going out at hydraulic pump
Oil port is also communicated with overflow valve 13, and specifically, this overflow valve 13 is communicated in the first branch road A1.
Advance reversal valve 6, be three six-way transfer valves, be arranged on hydraulic pump and propelling cylinder 8 it
Between, for regulating the duty of propelling cylinder 8, thus change the piston with propelling cylinder 8
The position of the rock drill 15 that bar is connected.As shown in FIG., advance reversal valve 6 by an oil-feed
Mouth is connected with the first branch road A1.Reversal valve 6 is advanced to have away from hydraulic pump oil-out P side
Three hydraulic fluid ports, the first hydraulic fluid port (be positioned in figure downside) by oil circuit and propelling cylinder 8 without bar
Chamber connects, and the second hydraulic fluid port (in the middle of being positioned in figure) passes through of oil circuit and impact reversal valve 9
Hydraulic fluid port is connected, and the 3rd hydraulic fluid port (be positioned in figure upside) is had by oil circuit and propelling cylinder 8
Bar chamber connects.Advance reversal valve 6 can realize different merits by the switching of three operating positions
Can, in fig. 2 shown in middle position time so that this propelling cylinder 8 is in preparation shape
State；To its adjust be in figure the next time so that propelling cylinder 8 is in propelling
State；To its adjust be in figure upper time so that propelling cylinder 8 is in and moves back
The state of returning.The piston rod of propelling cylinder 8 is connected with rock drill 15, is used for driving rock drill 15
Travel forward, change its position.
This propelling reversal valve 6 can make all more options, e.g. electrically-controlled valve etc., in the present invention,
Advancing reversal valve 6 is hand-operated direction valve, operator be operated manually Solid rocket engine handle
Commutation.
For ease of knowing the size of propelling pressure, at the oil circuit of the rodless cavity of connection propelling cylinder 8
On be communicated with propelling pressure table 16, this propelling pressure table 16 is positioned at air relief valve module 14 and advances
Between oil cylinder 8, to observe propelling pressure.
Air relief valve module 14 is arranged between propelling reversal valve 6 and propelling cylinder 8, in order to adjust
Put on the propelling pressure of propelling cylinder 8, specifically, in the present invention, air relief valve module 14
Can be by the aperture Accommodation of valve in the propelling pressure of propelling cylinder.As shown in FIG., subtract
Pressure valve module 14 is series on oil circuit, in order to be adjusted the oil-out pressure of hydraulic pump, should
Air relief valve module 14 can make all more options, arrange single air relief valve or by air relief valve with
Other valves with the use of, it is possible to adjust propelling pressure.Fig. 7 shows a kind of situation,
Wherein, this air relief valve module 14 is chosen as adjustable one way pressure-reducing valve, and it is by P mouth and R mouth
It is series in the propelling oil circuit of propelling cylinder 8, thus propelling pressure is adjusted.
Advancing unloader 3, its oil-in is arranged between air relief valve module 14 and propelling cylinder 8
Position, its oil-out connection fuel tank.In the present invention, this propelling unloader 3 changes for two-position three way
To valve, an operating position, it can be with off-load, and in another operating position, it can not
Off-load.Further, in the present invention, this propelling unloader 3 is controlled by the first shuttle valve 5, when
When rock drill 15 is in preparation, pre-punching (touching) and high push mode, this propelling unloader
3 all not off-loads.As shown in FIG., this propelling unloader 3 is hydraulic control pilot valve.
Impact reversal valve 9, is arranged between hydraulic pump and rock drill 15, to change rock drill 15
The duty of jump bit (rock drill internal hammer striker, figure not shown in).Such as institute in figure
Showing, this impact reversal valve 9 is also three six-way transfer valves, and it passes through an oil-in and hydraulic pressure
Second branch road A2 of pump is connected.Impact reversal valve 9 has away from the side advancing reversal valve 6
Three hydraulic fluid ports, the first hydraulic fluid port (being positioned in figure downside) is connected with rock drill 15 by impact oil circuit
Logical, the second hydraulic fluid port (in the middle of being positioned in figure) is by oil circuit and an oil-in of the first shuttle valve 5
Being connected, the 3rd hydraulic fluid port (being positioned in figure upside) is connected with rock drill 15 by impact oil circuit,
First hydraulic fluid port and the 3rd hydraulic fluid port are not also turned on.By this impact reversal valve 9 so that impact
Hammer is in the state of impact or is in the state do not impacted.
For ease of knowing the size of surge, impact oil circuit is communicated with surge table 17,
Further, this surge table 17 position between choke valve module and jump bit, so that
Observe surge.
Similarly, this impact reversal valve 9 can make all more options, e.g. electrically-controlled valve etc., this
In invention, impact reversal valve 9 is hand-operated direction valve, operator be operated manually impact
Joystick commutates.
Choke valve module, is arranged between impact reversal valve 9 and rock drill 15, in order to adjust chisel
The frequency of impact of the jump bit of rock machine 15.This choke valve block coupled in series is on impact oil circuit, in order to
Control the frequency of impact of the jump bit of rock drill 15.This choke valve module can make all more options,
Such as, the combination of choke valve or the combination of other kinds of valve, as long as it enables to
When impacting reversal valve 9 and commutating, jump bit is obtained in that different frequency of impacts.This
In bright, this choke valve module is the choke valve group 7 that two choke valves are arranged in parallel formation, and,
The flow of these two choke valves is different, when impacting reversal valve 9 and commutating, according to throttle flow rate
Different and make jump bit obtain different frequency of impacts.
Specifically, one of them choke valve 701 connects with the first hydraulic fluid port of impact reversal valve 9,
So that the jump bit of rock drill 15 impacts bit shank with altofrequency, another choke valve 702 with
3rd hydraulic fluid port connection of impact reversal valve 9, so that the jump bit of rock drill 15 is with low frequency
Impact bit shank.When impact reversal valve 9 carries out position switching, jump bit can be made to obtain difference
The oil of flow, thus obtain different frequency of impacts.These two choke valves, all can regulate stream
Amount, to adjust low frequency impact and altofrequency impact respectively.
Impact reversal valve 9 can realize different functions by the switching of three operating positions,
During upper shown in Fig. 2, so that the jump bit of rock drill 15 is in SBR.Join
Close this choke valve module to use, during the middle position that impact reversal valve 9 is adjusted in figure, can make
The jump bit obtaining rock drill 15 is in low frequency impact conditions；Be adjusted in figure the next time,
So that the jump bit of rock drill 15 is in altofrequency impact conditions.
Impact unloader 4, its oil-in is arranged on choke valve module (such as, the joint in the present invention
Stream valve group 7) and the jump bit of rock drill 15 between, oil-out connected tank.Similarly, this punching
Hitting unloader 4 is two position three way directional control valve, and an operating position, it can be with off-load, separately
One operating position, it can not off-load.As shown in FIG., this impact unloader 4 is hydraulic control
Pilot valve.
First shuttle valve 5, one oil-in receives self-propelled reversal valve 6 and/or impact commutation
The oil of valve 9, another oil-in is arranged between air relief valve module 14 and propelling cylinder 8, its
Oil-out respectively with advance unloader 3 control port and impact unloader 4 control port
It is connected, in order to when the bore bit of rock drill 15 enters solution cavity, to make propelling unloader 3 and impact unload
Lotus valve 4 is connected respective depressurized circuit and is carried out release.Shown in figure it is, the first shuttle valve 5
One oil-in receives self-propelled reversal valve 6 and the oil of impact reversal valve 9, and, advance
Reversal valve 6 is when three operating positions, and this oil-in of the first shuttle valve 5 is to maintain connection all the time
, so, so it is easy to understand that this oil-in of the first shuttle valve 5 is only by impact reversal valve 9
Control.Further, in conjunction with this figure, after rock drill starts, only make when impact reversal valve 9 is in
During the position that jump bit altofrequency is impacted, this oil-in no pressure oil.
But, this oil-in of the first shuttle valve 5 can also be only by advancing reversal valve 6 or simultaneously
By advancing reversal valve 6 and the control of impact reversal valve 9.Similarly, it also should meet so
Condition: when action advances reversal valve 6 makes rock drill at preparation shape with impact reversal valve 9
When state or pre-punching state, the output of this oil-in, from the pressure oil of the 220bar of hydraulic pump, is made
It is the output pressure participation propelling unloader 3 control with impact unloader 4 of the first shuttle valve 5；
And when action advances reversal valve 6 makes rock drill 15 normally advance and rock drilling with impact reversal valve 9
Time (height raises punching), it participates in controlling to advance unloader 3 to unload with impact not as output pressure
Lotus valve 4, now, whether the first shuttle valve is depended in off-load to advance unloader 3 and impact unloader 4
5 oil-ins between air relief valve module 14 and propelling cylinder 8.
As it was previously stated, advance unloader 3 to be hydraulic control pilot valve with impact unloader 4, it is equal
Having control port, each control port all oil-outs with the first shuttle valve 5 are connected.When first
The oil-out pressure of shuttle valve 5 presets pressure more than the spring advancing unloader 3 with impact unloader 4
During power, then advance unloader 3 and impact unloader 4 switch operating position, be in not off-load
State.The most in the present invention, the bore bit starting to start to rock drill 15 at rock drill 15 enters
Enter in the time between solution cavity, advance unloader 3 to be in not off-load with impact unloader 4
State.Additionally, advance unloader 3 to should be greater than pricker with the spring preset pressure of impact unloader 4
When head enters solution cavity, and the propelling pressure of propelling cylinder 8 (after bore bit enters solution cavity, propelling pressure
Decline, it is, the pressure of an oil-in of the first shuttle valve 5), it is ensured that in this case, two
Person is turned on release.
It addition, be additionally provided with the first check valve 11 and the second check valve 12 on the second branch road A2,
First check valve 11 is communicated between the second branch road A2 and the oil-in advancing reversal valve 6,
Second check valve 12 serial communication is on the second branch road A2.In this manner it is ensured that fluid is by liquid
Press pump is to advancing reversal valve 6 and the unidirectional output of impact reversal valve 9.
For being easy to further control to advance unloader 3 and impact unloader 4, advancing unloader
3 are provided with on-off control valve at the oil-in of impact unloader 4, in order to control propelling unloader
3 with the break-make of impact unloader 4, when this on-off control valve is connected, advance unloader 3 and rush
Hit unloader 4 side and have the probability of connection.As shown in FIG., this on-off control valve can select
For Solenoid ball valve 1, it is two-position four-way valve, and two oil-ins of this two-position four-way valve are respectively communicated with
In pushing away the rodless cavity oil circuit of oil oil cylinder 8 and impacting oil circuit, two oil-out is respectively communicated with in pushing away
Enter the oil-in of unloader 3 and impact unloader 4.When the spool of this Solenoid ball valve 1 is in
During one operating position (bottom in figure), unloader 3 is advanced all can not with impact unloader 4
Can turn on；When the spool of this Solenoid ball valve 1 is in the second operating position (upper in figure),
Advance unloader 3 may connect with impact unloader 4.
Know that for ease of operator the bore bit of rock drill 15 enters solution cavity, this chisel of the present invention
The anti-solution cavity card pricker system of rock bench car also includes pressure switch 2 and the second shuttle valve 10, the second shuttle valve
One oil-in of 10 is connected to the rod chamber oil circuit of propelling cylinder 8, and another oil-in connects
In the rodless cavity oil circuit of propelling cylinder 8, the oil-out of the second shuttle valve 10 connects pressure switch 2, uses
With when advancing unloader 3 and impact unloader 4 off-load alarm.This pressure switch 2 must pressed
Under, its electrical contact is normal off state, under the cooperation of electrical system, prevention solution cavity card pricker
Alarm lamp is in OFF state.
It addition, RPCI functional module in figure 18 and FPCI functional module 19 be respectively communicated with in
The two ends of air relief valve module 14.RPCI (rotation pressure control impact) function is said
Bright: rotation pressure gradually rises, the stepless decline of propelling pressure；Rotation pressure exceedes anti-sticking pricker pressure
Power, rock drill rollback.FPCI (feed pressure control impact) function declaration: push away at height
Gao Chong (i.e. to high thrust during rock drill applying work, applies altofrequency to jump bit to bit shank
Impact) when there is card pricker under state, propelling pressure is stepless when dropping to less than 50bar, HI high impact
Change to low impact；After card pricker eliminates, when propelling pressure is raised to more than 50bar, low impact returns
To HI high impact.This part is not belonging to the main improvement of the present invention, therefore the most reinflated description.
It follows that combine each accompanying drawing, the concrete operation of this anti-sticking pricker system of the present invention is carried out
Explanation.
1) system enters SBR.
Before drill jumbo starts, the spool of impact reversal valve 9 is in figure upper, advances commutation
The spool of valve 6 is in figure middle position.
As shown in Figure 2, after drill jumbo starts, hydraulic pump outlet P pressure oil is 220bar.
This pressure oil is upper through the spool of overbump reversal valve 9, enters the first shuttle valve 5.Thus, first
The outlet pressure of shuttle valve 5 is 220bar, and this 220bar pressure is pilot pressure, promotes propelling to unload
Its spool is made to be in bottom after the spool switching of lotus valve 3 and impact unloader 4.Its effect is,
The relief circuit of surge is cut off, and the relief circuit of propelling pressure is also turned off.
Pressing electric switch, Solenoid ball valve 1 obtains electric, and propelling pressure is connected and advanced unloader 3, punching
Hit pressure and connect impact unloader 4.But, owing to advancing unloader 3 and impact unloader 4 all
Being in preparation job state, now propelling pressure and the surge of rock drill 15 is 0bar.
Second shuttle valve 10 is logic element, compares 8 liang of working chamber input hydraulic fluid port pressure of propelling cylinder,
Take large values and go to control pressure switch 2 for output pressure.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system " ready " can normally work.
2) the pre-drilling operation of rock drill.
Promote impulsive control handle so that the spool of impact reversal valve 9 is in middle position.Such as Fig. 3
Shown in, pressure oil 220bar, by position in this spool, enters the first shuttle valve 5.This 220bar simultaneously
Pressure oil is connected choke valve group 7 by position in this spool and is positioned in figure the choke valve 702 on right side, makes
The internal hammer striker of rock drill 15 impacts bit shank operation with low frequency.
Promote Solid rocket engine handle so that advance the spool of reversal valve 6 to be in bottom.Such as Fig. 3
Shown in, pressure oil flows through RPCI functional module 18, air relief valve module 14 and FPCI merit
Energy module 19, enters the rodless cavity of propelling cylinder 8.Wherein, air relief valve module 14 controls to advance
Pressure is 40bar.Propelling cylinder 8 carries out advancing operation with 40bar operating pressure.Meanwhile, 40bar
Operating pressure enters the first shuttle valve 5.
The oil-out pressure of the first shuttle valve 5 is 220bar, continues to press on propelling unloader 3 and punching
Hit unloader 4 spool switching make spool be in bottom, so surge and propelling pressure
Relief circuit also remain in dissengaged positions.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system completes rock drill 15 " punching in advance " work and (can also be referred to as " to touch
Light punching " operation).
3) rock drill " height raises punching " operation.
Promote impulsive control handle so that the spool of impact reversal valve 9 is in bottom.Such as Fig. 4
Shown in, pressure oil 220bar enters the path of the first shuttle valve 5 and is cut off.This 220bar simultaneously
Pressure oil is connected choke valve group 7 by this spool bottom and is positioned in figure the choke valve 701 in left side, makes
The internal hammer striker of rock drill 15 impacts bit shank operation with altofrequency.
Promote Solid rocket engine handle so that the spool of impact reversal valve 9 is in bottom.Such as Fig. 4
Shown in, pressure oil flows through RPCI functional module 18, air relief valve module 14 and FPCI merit
Energy module 19, enters the rodless cavity of propelling cylinder 8.Wherein, air relief valve module 14 controls to advance
Pressure is 65bar.Propelling cylinder 8 carries out advancing operation with 65bar operating pressure.Meanwhile, 65bar
Operating pressure enters the first shuttle valve 5.
The oil-out pressure of the first shuttle valve 5 is 65bar, continues to press on propelling unloader 3 and impact
The spool switching of unloader 4, makes spool be in bottom, so surge and propelling pressure
Relief circuit also remains in dissengaged positions.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system completes rock drill 15 " height raises punching " work.
4) prevention solution cavity card pricker alarm condition.
In operation 3) on the basis of, bore bit is pouring the moment of " solution cavity ", the work of propelling cylinder 8
Pressure moment reduces to about 40bar (should be for test determination data).
The outlet pressure of the first shuttle valve 5 is 40bar, and this 40bar pressure acts on propelling unloader
3 and impact unloader 4 spool.But the spring advancing unloader 3 and impact unloader 4 is pre-
If pressure is 50bar, under spring force, unloader 3 and the valve of impact unloader 4 are advanced
Core is in upper.Its effect is, the relief circuit of surge is switched on, unloading of propelling pressure
Lotus loop is also switched on.
Effect is further, and propelling cylinder 8 stops advancing, the built in shock of rock drill 15 simultaneously
Hammer stops impact bit shank operation.Propelling pressure becomes 0bar, and surge becomes 0bar.
Pressure switch 2 its electrical contact under decompression is normal open state, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " shinny " state, points out operator, rock drill
The bore bit of 15 has been enter into solution cavity.
So, control system makes rock drill 15 be in " prevention solution cavity card pricker " duty.
5) system reset is to " touching light punching " job state.
This operation and operation 2) similar, promote impulsive control handle so that impact reversal valve 9
Spool is in middle position.As shown in Figure 5, hydraulic pump oil-out pressure is 220bar.This pressure
Oil, by position in the spool of impact reversal valve 9, enters into the first shuttle valve 5.
Promote Solid rocket engine handle so that advance the spool of reversal valve 6 to be in bottom.Such as front institute
Stating, after air relief valve module 14, propelling pressure becomes 40bar.
The oil-out pressure of the first shuttle valve 5 is 220bar, and this 220bar pressure is pilot pressure,
Promote and advance the spool of unloader 3 and impact unloader 4 to make spool be in bottom after switching.Its
Effect is, the relief circuit of surge is cut off, and the relief circuit of propelling pressure is also turned off.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system makes rock drill 15 be in " touching light punching " duty.
6) deslagging operation is carried out in " touching light punching " duty.
In operation 5), now propelling pressure is 40bar.Promote Solid rocket engine back and forth
Handle, advances the spool of reversal valve 6 in the next (as shown in Figure 5) and upper (such as Fig. 6 institute
Show) between switch, propelling cylinder 8 makes the bore bit of rock drill 15 join with " solution cavity " in rock stratum
Move back and forth at Duan.Its effect is, rock drill bit is got rid of at rock stratum and " solution cavity " switching phase in time
Rock quarrel, eliminate and make the influence factor of drill steel deflection.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system makes rock drill 15 carry out " deslagging " operation at switching phase.
7) " solution cavity district " is crossed in " touching light punching " duty.
In operation 5), now propelling pressure is 40bar.Control propelling cylinder 8 to continue
Continuous propelling, bore bit initially enters " solution cavity " district's operation.Under " touching light punching ", bore bit is relatively easy to
Cross " solution cavity " Ka Qianqu.
Because " solution cavity " rock stratum, district or stone distribution are loose, rock drill 15 fltting speed is relatively fast.
When rock drill 15 fltting speed is from fast to slow, result shows that now bore bit has passed over " solution cavity " district.
Pressure switch 2 is normal off state depressing its electrical contact, in the cooperation of electrical system
Under, " prevention solution cavity card pricker " alarm lamp is in " extinguishing " state.
So, control system makes rock drill 15 complete " solution cavity is interval " and passes through operation.
This system of the present invention, before there is card pricker, i.e. stops propelling and the punching of rock drill
Hit operation, it is possible to be prevented effectively from the generation of solution cavity card pricker.Additionally, due to the boring in solution cavity district is difficult
To embark on journey, the explosive that explosive loading truck is loaded in solution cavity district is also difficult to shape.Utilize the present invention, pricker
During head operation, can creep into initiative recognition solution cavity district stopping, as such, it is possible to controlled loading of explosive car
Load explosive in non-solution cavity district, improve the utilization rate of explosive.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, this
The protection domain of invention is defined by the claims.Those skilled in the art can be the present invention's
In essence and protection domain, the present invention is made various amendment or equivalent, this amendment or
Equivalent also should be regarded as being within the scope of the present invention.
Claims (10)
1. the anti-solution cavity card pricker system of a drill jumbo, it is characterised in that including: hydraulic pump,
Rock drill, propelling reversal valve, air relief valve module, propelling unloader, propelling cylinder, impact are changed
To valve, choke valve module, impact unloader and the first shuttle valve, wherein,
Described propelling reversal valve is arranged between described hydraulic pump and described propelling cylinder, is used for adjusting
Save the duty of described propelling cylinder, to change the described rock drill being connected with its piston rod
Position；
Described air relief valve module is arranged between described propelling reversal valve and described propelling cylinder, uses
To adjust the propelling pressure putting on described propelling cylinder；
The oil-in of described propelling unloader is arranged on described air relief valve module and described propelling cylinder
Between, oil-out connected tank；
Described impact reversal valve is arranged between described hydraulic pump and described rock drill, to change
State the duty of the jump bit of rock drill；
Described choke valve module is arranged between described impact reversal valve and described rock drill, in order to
Adjust the frequency of impact of described jump bit；
The oil-in of described impact unloader be arranged on described choke valve module and described jump bit it
Between, oil-out connected tank；
One oil-in of described first shuttle valve receives from described propelling reversal valve and/or described punching
Hit the oil of reversal valve, another oil-in be arranged on described air relief valve module and described propelling cylinder it
Between, its oil-out respectively with the control port of described propelling unloader and described impact unloader
Control port is connected, in order to when the bore bit of described rock drill enters solution cavity, to make described propelling off-load
Valve is connected respective depressurized circuit with described impact unloader and is carried out release.
2. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
Also including pressure switch and the second shuttle valve, two oil-ins of described second shuttle valve connect respectively
On the rod chamber oil circuit and rodless cavity oil circuit of described propelling cylinder, oil-out is opened with described pressure
Pass is connected, in order to when described propelling unloader and described impact unloader off-load alarm.
3. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
Described propelling reversal valve and described impact reversal valve are the hand-operated direction valve of three clematis stem.
4. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
The choke valve group that described choke valve module is formed by two choke valve parallel connections, and described in two
The flow of choke valve is different, by the commutation of described impact reversal valve to adjust rushing of described jump bit
Hit frequency.
5. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
Also include that overflow valve, described overflow valve are connected with the oil-out of described hydraulic pump.
6. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
It is connected between described air relief valve module and described propelling cylinder and has propelling pressure table.
7. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
It is connected between described choke valve module and described jump bit and has surge table.
8. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, it is characterised in that
Also include that on-off control valve, described on-off control valve are connected to described propelling unloader and described punching
Hit at the oil-in of unloader, in order to control described propelling unloader and described impact unloader
Break-make.
9. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 8, it is characterised in that
Described on-off control valve is the Solenoid ball valve of two-position four-way.
10. the anti-solution cavity card pricker system of drill jumbo as claimed in claim 1, its feature exists
In, described propelling unloader and described impact unloader are two position three way directional control valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073402.9A CN104653529B (en) | 2015-02-11 | 2015-02-11 | The anti-solution cavity card pricker system of drill jumbo |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073402.9A CN104653529B (en) | 2015-02-11 | 2015-02-11 | The anti-solution cavity card pricker system of drill jumbo |
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| CN104653529A CN104653529A (en) | 2015-05-27 |
| CN104653529B true CN104653529B (en) | 2016-08-17 |
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| CN201510073402.9A Active CN104653529B (en) | 2015-02-11 | 2015-02-11 | The anti-solution cavity card pricker system of drill jumbo |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109854553B (en) * | 2019-04-03 | 2024-04-19 | 四川钻神智能机械制造有限公司 | Cavity anti-seizing drill rod system of drilling jumbo |
| CN112727818B (en) * | 2020-12-25 | 2023-03-21 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
| CN113124006B (en) * | 2021-04-19 | 2023-04-07 | 中国铁建重工集团股份有限公司 | Hydraulic system for continuously adjusting rock drilling power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006064137A (en) * | 2004-08-30 | 2006-03-09 | Kayaba Ind Co Ltd | Brake device for motor |
| CN102561935B (en) * | 2012-01-20 | 2014-02-19 | 中船重工中南装备有限责任公司 | Positioning control system of hydraulic rock drilling machine |
| CN202867386U (en) * | 2012-11-14 | 2013-04-10 | 中煤科工集团重庆研究院 | Drill loader hydraulic anti-jamming control system |
| CN103821451B (en) * | 2014-02-28 | 2017-04-12 | 金川集团股份有限公司 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
| CN204512026U (en) * | 2015-02-11 | 2015-07-29 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | The anti-solution cavity card pricker system of drill jumbo |
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Address after: 210038 Hengtai Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu 2 Patentee after: An Bai Tuo (Nanjing) Construction Mine Equipment Co., Ltd. Address before: 210038 Hengtai Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu 2 Patentee before: Atlas Copco (Nanjing) Construction & Mining Equipment Ltd. |