CN103821451B - Hydraulic control system of anti-clamping drill rod of rock drilling machine - Google Patents
Hydraulic control system of anti-clamping drill rod of rock drilling machine Download PDFInfo
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- CN103821451B CN103821451B CN201410071094.1A CN201410071094A CN103821451B CN 103821451 B CN103821451 B CN 103821451B CN 201410071094 A CN201410071094 A CN 201410071094A CN 103821451 B CN103821451 B CN 103821451B
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Abstract
The invention provides a hydraulic control system of an anti-clamping drill rod of a rock drilling machine. The hydraulic control system comprises an LS (Load Sensor) control variable pump, a rock drilling impact valve block, a propelling control valve set, a propelling pressure regulating valve block, an anti-clamping drill rod valve block and a pilot handle control valve set. When a rotary pressure of the rock drilling machine is raised, the hydraulic control system has the functions that the pressure of a propelling oil cylinder of the rock drilling machine is automatically reduced, the propelling is stopped and the rock drilling machine is automatically returned to the outside, and the impact is automatically stopped when the rock drilling machine is returned; compared with the prior art, a control function is the most complete. The control system adopts an LS control function of the variable pump and has the characteristics of good automatic control performance, strong commonality of hydraulic elements, energy saving and high efficiency.
Description
Technical field
The present invention relates to the hydraulic control system of a kind of hydraulic control system, more particularly to rock drill, it is possible to achieve to chisel
Continuously adjustabe between rock machine light, heavy percussion power.
Background technology
Rock drill, in the rock construction equipment of engineering machinery, with very important effect, is main rock-boring
Machinery, hydraulic gate is as its cutting rate is fast, power is big, efficiency high, pollute little, in occupation of the leading position of rock drill,
Hydraulic gate is widely used in underground mining and tunnelling, the railway and vcehicular tunnel even city of black and nonferrous mine
The occasions such as the driving of city's subway, colliery and military engineering construction.
General hydraulic gate is required for being furnished with drill steel, bore bit and coupling sleeve, is drilled using bore bit fractured rock, in work
When making, the bore bit of rock drill is in addition to impact rock, in addition it is also necessary to rotation and propulsion, to realize high-speed drilling and to reduce bore bit
Abrasion.In addition to low power hand-held hydraulic rock drill, hydraulic gate is as power is big, speed fast, the weight of itself
Also it is big, therefore it is typically configured in transportable vehicle（Drill wagon for jack hammer）On, to realize the rapid drilling to rock.
It is well known that rock non-homogeneity, in a drilling, occur unavoidably the crack of rock, hardness differ,
The phenomenon of the rock qualitative change such as interlayer.As above reason, the direction of advance of drill bit can be glanced off, drill pipe buckling is made.This
Sample can be blocked when drill pipe buckling is serious because of the deflection influence construction quality of bore position, and drill steel and drill bit cannot take out, and formed
Useless hole.Therefore, general drill wagon for jack hammer has a kind of control technology of anti-sticking pricker to rock drill, prevents the generation of above accident.
General drill wagon for jack hammer, conventional anti-sticking pricker device are the chisels when the rotation torque of drilling rod exceedes a certain setting value
The propeller of rock machine can stop advancing and returning backward, just advance again automatically when moment of torsion is reduced to certain value.Function compares
In the DCS-12 hydraulic control systems of complete Atlas Copco companies, when the rotation torque of rock drill increases to certain value,
Angle of rake propelling pressure can be reduced, if rotation torque continues to increase to much higher value, then is exited using propeller return
Method.Its functional principal is referring to Fig. 1.
The propelling pressure of propeller propelling cylinder 020（Pressure gauge 030）Controlled by air relief valve 610, air relief valve 610
Itself highest output pressure can be controlled, additionally by control port 300P, the output pressure of air relief valve can also be lowered, that is, pushed away
Enter the propelling pressure of device.
The rotational pressure of rock drill rotation motor（Pressure gauge 050）, by controlling a hydraulic control section in anti-sticking pricker valve 800
Stream valve 820, exerts one's influence to the pressure of the control port 300P of air relief valve 610.When rotational pressure is higher than the setting pressure of valve 820
When, valve 820 is shifted, and controls the leakage step-down of throttle orifice of the pressure of oil 300P by valve 820, the output pressure of air relief valve 610
Same step-down, therefore the propulsive force of propelling cylinder reduces on propeller, rock drill has slowed down the speed of drilling propulsion.
When the measure of above-mentioned anti-sticking pricker still can not be fixed a breakdown, the rotational pressure of rock drill continues to raise, more than by overflow
During the propeller returning pressure of the setting of valve 830, the logical hydraulic operated valve 810 of two five in anti-sticking pricker valve commutates, by forward operation valve 710
The hydraulic oil 020A switchings of supply 020 rodless cavity of propelling cylinder, the rod chamber 020B hydraulic fluid ports of supply propelling cylinder 020, realize
The commutation of propelling cylinder, i.e. propeller become retrogressing by propulsion and return.When above-mentioned rotational pressure is reduced, progressively can return to
Original operating states, realize the control requirement for being automatically prevented from card pricker.
DCS-12 hydraulic systems, use LS controls（Load Sinser control, Loadsensing control）Variable
LS control devices are only used as pressure-reduction starting device use by pump 010.When motor start-up is finished, during hydraulic work system, electromagnetism
Valve 630 is powered, and variable pump is operated under constant-pressure variable state, operated valve member（710、720）It is the banked direction control valves of open system,
The superiority of LS controls is not given full play to.
Although the anti-sticking pricker Technical comparing of DCS-12 is advanced, using also relatively more effective, its open type banked direction control valves operation, constant pressure
Pump blood pressure lowering control impact and propulsion, have high energy consumption, and anti-sticking pricker valve block structure is complicated, the low shortcoming of standardization level.
The content of the invention
It is an object of the invention to provide a kind of rock drill anti-sticking pricker hydraulic control system, rises in rock drill rotational pressure
When, possessing rock drill propelling cylinder pressure reduces automatically, stops propulsion, outside rock drill auto-returned, being also equipped with rock drill return
When be automatically stopped the function of impact.
In order to achieve the above object, the invention provides a kind of rock drill anti-sticking pricker hydraulic control system, including LS controls
Variable pump, rock drilling dash valve block, Solid rocket engine valve group, propulsion pressure regulating valve block, anti-sticking pricker valve block and pilot handle control valve group；
Air relief valve connection in the outlet of variable pump and the oil-in of Solid rocket engine valve group, rock drilling dash valve block, it is described to subtract
Pilot control oil sources of the output of pressure valve as pilot handle, controls rock drill and impacts the guide oil of handle again by anti-sticking pricker valve
After the direction valve control of surging of block, and the guide oil of light impulsive control handle is connected to the first of rock drilling impulsive control valve block together
The two ends of shuttle valve, the output of the shuttle valve then control the direction valve that surges of rock drilling dash valve block, and the direction valve that surges is controlled again
Whether the output pressure signal of propulsion pressure regulating valve block is connected with the pressure signal of Solid rocket engine valve group.The of rock drilling dash valve block
The two ends of two shuttle valves are connected to the pressure signal in Solid rocket engine valve group and another rock drill pressure inside Solid rocket engine valve group
Force signal, the output of second shuttle valve then connect with the pressure oil port of the overflow valve of rock drilling dash valve block, while being also connected with
The LS control ports of variable pump；
Action advances oil cylinder advances and returns the guide oil of handle through the two position four-way valves control of surging of anti-sticking pricker valve block
Afterwards, the control end of direction of propulsion valve in Solid rocket engine valve group is connected to, its neutralization action advances oil cylinder propulsion guide oil connection
The direction valve that surges for also having anti-sticking pricker valve block control mouth, rock drill is controlled by the direction valve that surges and impacts the elder generation of handle again
The break-make of Oil Guide.The oil-in of direction of propulsion valve is connected with the oil-out of variable pump after propelling pressure recuperation valve.Propulsion side
It is connected the two ends for being followed by propelling cylinder to two oil-outs of valve respectively with two overflow valves.The pressure signal of direction of propulsion valve
Oil can be respectively turned on two pressure-control valves and pressure signal is connected to by exterior tubing the of rock drilling dash valve block
On two shuttle valves；
In anti-sticking pricker valve block, rock drill rotation motor rotates forward the pressure oil port connection of pressure oil and two overflow valves,
The oil return opening of two overflow valves is connected with control oil return pipe after connecting a throttle orifice respectively again.One throttle orifice and overflow valve
Junction controls two position four-way valves that surge of anti-sticking pricker valve block, and two four-way hydraulic operated valves control the propulsion of direction of propulsion valve
With the guide oil normality or reverse operating for returning handle.The junction of another throttle orifice and overflow valve and propulsion pressure regulator valve
The control port of the balanced valve on block is connected；
In propulsion pressure regulating valve block, the balanced valve of output pressure signal and propulsion pressure regulating valve block, the overflow of propulsion pressure regulating valve block
One hydraulic fluid port connection of the direction valve that surges of valve and propulsion pressure regulating valve block, can also make output under the direction valve normality of surging
The pressure oil port connection of the second overflow valve on pressure signal and propulsion pressure regulating valve block.Surge the control port and rock drilling of direction valve
Control rock drill on control valve block impacts the guide oil of handle again and is connected.
Further, the function of rock drill impact is automatically stopped when can simplify anti-sticking pricker propeller auto-returned, is not set
The direction valve that surges in anti-sticking pricker valve block, makes the guide oil that control rock drill impacts handle again not be controlled.And other phases
Answering ground to simplify propeller reduces the methods such as pressure functional automatically.
Further, the air relief valve in rock drilling control valve block, can be substituted by other pilot controls in hydraulic system.
Further, pilot handle, can be substituted with the others pilot-actuated valve such as electro-hydraulic proportional valve.
Beneficial effects of the present invention：
The invention provides a kind of new rock drill anti-sticking pricker control system, when rock drill rotational pressure rises, tool
Standby rock drill propelling cylinder pressure reduced automatically, stops propulsion, outside rock drill auto-returned, be also equipped with automatic during rock drill return
Stop the function of impact, and prior art compares, control function is the most complete.And this control system all adopts variable pump
LS control functions, the characteristics of with good performance, Hydraulic Elements highly versatile, efficient energy-saving is automatically controlled.
Description of the drawings
Schematic diagrams of the Fig. 1 for anti-sticking pricker part in the DCS-12 hydraulic control systems of Atlas Copco companies；
Fig. 2 is a kind of schematic diagram of rock drill anti-sticking pricker control system specific embodiment of the present invention；
In wherein Fig. 1：010th, the variable pump of LS controls, 020, the propelling cylinder of drill feed, 030 propelling pressure
Table, 040, rock drill rotation motor, 050 rock drill rotates forward pressure gauge, and each hydraulic fluid ports of 020A are:Propelling cylinder propelling pressure
Oil, 020B back pressures oil, 040a rock drills rotation motor rotate forward pressure oil, 040b reversal pressures oil, P10, variable pump pressure
Oil, LS, variable pump control oil, T, main oil return, t, control oil return；300P, air relief valve control oil, 720C, light impulsive control oil,
710th, A forward operations valve propelling pressure oil, 710B, returns pressure oil, S10, surge oil；370th, hydraulic control one-way valve, 380 sections
Discharge orifice, 600, air relief valve block, 610, external control type air relief valve, 620, check valve, 630, solenoid directional control valve, 710, forward operation master
Valve, 720, rock drill blasting operation valve, 730, choke valve, 740, choke valve, 800, anti-sticking pricker valve group, 810, two five logical to surge
Valve, 820, hydraulic-control throttling valve, 830 overflow valves, 840,850, throttle orifice.
In Fig. 2：01st, variable pump, 02, the propelling cylinder of drill feed, 03, propelling pressure table, 04, rock drill rotation
Motor, 05, rock drill rotate forward pressure gauge；P2, propulsion valve oil-feed port, Pc, pilot control oil sources, LS1, Solid rocket engine valve group
Pressure signal, LS2, propulsion pressure regulating valve block output pressure signal, LS3, rock drill pressure signal, 20a, propulsion guide oil, 20b,
Propulsion returns guide oil, and C1, rock drill impact guide oil again, C2, gently impacts guide oil, K1, propulsion pressure regulation signal；10th, rock drilling
Dash valve block, 11, overflow valve, 12, surge direction valve, 13 air relief valve, 14, shuttle valve, 15, shuttle valve, 20, Solid rocket engine valve group,
21a, propelling pressure valve, 21b, return pressure valve, 22a, propelling pressure overflow valve, 21b, return Pressure relief valve, and 23, propulsion side
To valve, 24, propelling pressure recuperation valve, 30, propulsion pressure regulating valve block, 31, surge direction valve, 32, overflow valve, 33, overflow valve, 34,
Balanced valve, 40, anti-sticking pricker valve block, 41, surge direction valve, 44, two four-way hydraulic operated valves, 42, overflow valve, 43, overflow valve, 45,
Throttle orifice, 46, throttle orifice, 50, pilot handle, 51a, propulsion handle, 51b, propulsion return handle, 52a, impact handle again,
52b, gently impact handle.
Specific embodiment
As shown in Fig. 2 a kind of rock drill anti-sticking pricker hydraulic control system, including variable pump 01, the rock drilling impact of LS controls
Valve block 10, Solid rocket engine valve group 20, propulsion pressure regulating valve block 30, anti-sticking pricker valve block 40 and pilot handle control valve group 50.
Air relief valve 13 in the outlet of variable pump 01 and the oil-in of Solid rocket engine valve group 20, rock drilling dash valve block 10 connects
Connect, the output of the air relief valve controls the guide oil that rock drill impacts handle again as the pilot control oil sources Pc of pilot handle
After the direction valve 41 that surges of anti-sticking pricker valve block 40 is controlled, and the guide oil of light impulsive control handle is connected to rock drilling punching together
The two ends of the shuttle valve 15 of valve block 10 are hit, the output of the shuttle valve then controls the direction valve 12 that surges of rock drilling dash valve block 10, should
The direction valve that surges is controlled the output pressure signal of propulsion pressure regulating valve block 30 again and is connected with the pressure signal of Solid rocket engine valve group 20
Whether.The two ends of the shuttle valve 14 of rock drilling dash valve block 10 are connected to the pressure signal in Solid rocket engine valve group 20 and propulsion control valve
Group 20 inside another rock drill pressure signal, the shuttle valve 14 output then with the overflow valve 11 of rock drilling dash valve block 10
Pressure oil port connects, while being also connected with the LS control ports of variable pump 01.
Action advances oil cylinder advances and returns the two four-way hydraulic operated valves 44 of the guide oil through anti-sticking pricker valve block 40 of handle
After control, the control end of direction of propulsion valve 23 in Solid rocket engine valve group 20 is connected to, its neutralization action advances oil cylinder propulsion is first
The control mouth of the direction valve 41 that surges for also having anti-sticking pricker valve block 40 of Oil Guide connection, controls rock drill weight by the direction valve that surges
The break-make of the guide oil of impact handle.The oil-in of direction of propulsion valve 23 is by after propelling pressure recuperation valve 24 and variable pump 01
Oil-out connects.Two oil-outs of direction of propulsion valve 23 are connected with two overflow valves 22a, 22b respectively and are followed by propelling cylinder
Two ends.The pressure signal oil of direction of propulsion valve 23 can be respectively turned on two pressure-control valves 21a, 21b and believe pressure
Number it is connected on the shuttle valve of rock drilling dash valve block by exterior tubing；
In anti-sticking pricker valve block 40, rock drill rotation motor 04 rotates forward the pressure of pressure oil and two overflow valves 42,43
Hydraulic fluid port connects, and the oil return opening of two overflow valves is connected with control oil return pipe after connecting a throttle orifice 45,46 respectively again.One section
The junction of discharge orifice 46 and overflow valve 43 controls two four-way hydraulic operated valves 44 of anti-sticking pricker valve block, two four-way hydraulic operated valves
44 control direction of propulsion valve pushes away the 23 guide oil normalities or reverse operating for entering and returning handle.Another throttle orifice 45 with overflow
The control port of the junction of stream valve 42 and the balanced valve 34 on propulsion pressure regulating valve block 30 is connected；
In propulsion pressure regulating valve block 30, the balanced valve 34 of output pressure signal and propulsion pressure regulating valve block 30, propulsion pressure regulating valve block
One hydraulic fluid port connection of 30 overflow valve 33 and the direction valve 31 that surges of propulsion pressure regulating valve block 30, the direction valve normality of surging
The pressure oil port connection of the overflow valve 34 on output pressure signal and propulsion pressure regulating valve block 30, the direction of surging can also be made down
The guide oil that the control port of valve impacts handle again with the control rock drill on pilot-actuated valve block 50 is connected.
Further, it is possible to the function of rock drill impact when simplifying anti-sticking pricker propeller auto-returned, is automatically stopped, it is in the air
The direction valve that surges in card pricker valve block, makes the guide oil that control rock drill impacts handle again not be controlled, and other is corresponding
Ground simplifies propeller reduces the methods such as pressure functional automatically, the air relief valve in rock drilling control valve block, can by hydraulic system its
His pilot control is substituted；Pilot handle, can be substituted with the others pilot-actuated valve such as electro-hydraulic proportional valve.
Further illustrate how the present invention realizes with reference to the specific embodiment in the system practical operation：
The pressure oil that variable pump 01 is provided, is supplied by advancing valve as power source by P1 hydraulic fluid ports supply rock drilling dash valve block 10
, again to 20 fuel feeding of Solid rocket engine valve group, in rock drilling dash valve block 10, air relief valve 13 is by P1 hydraulic fluid port fuel feeding, air relief valve 13 for hydraulic fluid port P2
Output by pilot control oil sources Pc hydraulic fluid ports as the pilot-actuated valve block 50 of pilot handle oil sources.
Rock drill gently impacts handle 52b and is connected to one of shuttle valve 15 in rock drilling dash valve block 10 by light impact guide oil C2
End, the pressure oil for impacting handle 52a again are in advanced state, two four-way liquid in anti-sticking pricker valve block 40 in Solid rocket engine valve group
The commutation of dynamic valve 44 is connected rock drill and impacts the other end that guide oil C1 is communicated to shuttle valve 15 again again, while also controlling propulsion pressure regulation
The direction valve 31 that surges in valve block 30 commutates, and cuts off the control of 32 pairs of propulsion propulsion 30 output pressures of pressure regulating valve block of overflow valve.Weight
Impact handle 52a and light impact handle 52b control the impact of rock drill, are commutated by the control of shuttle valve 15 direction valve 12 that surges,
The output pressure signal LS2 of propulsion pressure regulating valve block is connected on Solid rocket engine valve group pressure signal LS1, participate in propelling pressure control
System.The rock drill pressure signal LS3 of internal rock drill impact, relevant rock drilling are merely illustrated inside the rock drilling dash valve block 10 of Fig. 2
Do not represent in the other parts figure of machine impulsive control.
Propulsion handle 51a and propulsion are returned the operation of handle 51b and are controlled by the direction valve 41 that surges in anti-sticking pricker valve block 40
Afterwards, guide oil 20b is returned by propulsion guide oil 20a, propulsion and is connected to Solid rocket engine valve group 20, control direction of propulsion valve 23 commutates.
When rock drill does not work, rotation motor rotates forward 04a no pressures, and valve 41 is in the normal state as shown in Figure 2, advances handle
The pressure oil of 51a is connected with propulsion guide oil 20a, and direction of propulsion valve 23 commutates, and advances the hydraulic oil of valve oil-feed port P2 by pushing away
Enter pressure-compensated valve 24, direction of propulsion valve valve 23 and enter 02A, propelling cylinder stretches out, while propelling pressure valve 21a is linked into propulsion
In control valve group pressure signal LS1, the LS hydraulic fluid ports of variable pump, the output pressure of control variable pump 01 are loaded into after shuttle valve 14
Power.Overflow valve 11 is connected with LS hydraulic fluid ports, the oil pressure relief of overflow valve 11, has placed restrictions on the highest output pressure of variable pump 01, i.e.,
The maximum working pressure of the system.Propulsion returns handle 51b and then connects propulsion return guide oil 20b, advances valve oil-feed port P2's
Hydraulic oil is controlled to enter 02B by direction of propulsion valve 23, and propelling cylinder is retracted, while returning Pressure relief valve 21b is linked into propulsion
In control valve group pressure signal LS1.
When rock drilling works, rock drill is rotated forward（04a fuel feeding）Worked with impact simultaneously, propulsion handle 51a makes propulsion oil
Cylinder is in propulsion position.In the presence of propulsion guide oil 20a, two four-way hydraulic operated valves 44 commutate, and are impacted handle 52a's again
Output is connected to rock drill and impacts guide oil C1 again, the commutation of the direction valve 31 that can control to surge.
During opening, rock drill gently impacts handle 52b work, and due to impacting handle 52a without output pressure again, surge direction valve
31 do not commutate.The pressure oil of light impact handle 52b commutates through the direction valve 12 that makes to surge of shuttle valve 15, advances the output of pressure regulating valve block
Signal LS2 is connected with Solid rocket engine valve group pressure signal LS1, then the LS mouths of variable pump are connected to by shuttle valve 14.By overflowing
The propelling pressure of the rock drilling opening of the stream setting of valve 32, it is lower than the pressure that overflow valve 33 and balanced valve 34 set, therefore variable pump 01
LS pressure determined by overflow valve 32, be the propelling pressure of relatively low rock drilling opening, rock drill is in light impact conditions.
When rock drill impacts handle 52a work again, commutate again by the direction valve 12 that makes to surge of shuttle valve 15, and the side of surging
Also commutate to valve 31.Overflow valve 32 is cut off with overflow valve 33.Overflow valve 33 and the pressure and variable pump 01 of the setting of balanced valve 34
LS pressure communications, the propelling pressure of rock drill raises, the work of high speed rock drilling of the rock drill in high propelling pressure is impacted again
State.
In anti-sticking pricker valve block 40, overflow valve 42 sets pressure as the normal rotational pressure of rock drill highest, overflow valve 43
Set the rock drill rotational pressure that pressure is returned as propeller, than valve 42 setting pressure it is much higher.
Under the working condition of high speed rock drilling, if there is card pricker phenomenon, the pressure of rock drill rotation motor 04a（Moment of torsion）
Rise, pressure oil port of this pressure-loaded to two overflow valves 42,43 of anti-sticking pricker valve block 40.When setting higher than overflow valve 42
During constant-pressure, overflow valve 42 starts leakage, and its pressure differential has been loaded on throttle orifice 45, and this pressure differential is by advancing pressure regulation letter
Number K1 is loaded into the control mouth of balanced valve 34, makes the oil pressure relief of balanced valve 34 advance pressure regulating valve block output pressure signal LS2
Decline in proportion, controlling propelling pressure recuperation valve 24 by Solid rocket engine valve group pressure signal LS1 makes the output of propulsion valve group 02A
Pressure declines therewith, has reached the target of automatic reduction propelling pressure.When the pressure of K1 is sufficiently large, balanced valve 34 is made all to open
Open, when pressure drop is zero, the pressure of 02A drops to zero, and propeller just stops propulsion.
When rock drill rotation motor 04a pressure continue rise, higher than overflow valve 43 setting pressure when, overflow valve 43 is opened
Begin to leak, its pressure differential has been loaded on throttle orifice 46, makes two four-way hydraulic operated valves 44 commutate, the commutation of the direction valve 41 that surges,
Propulsion is returned into handle 51a outputs and is communicated to propulsion return guide oil 20b, direction of propulsion valve 23 changes to return position from propulsion position
Put, advance the hydraulic oil of valve oil-feed port P2 to connect with 02B, propelling cylinder is retracted, and rock drill is returned.Realize the control of auto-returned
Target processed.Due to the commutation of the direction valve 41 that surges, 41 control port of hydraulicchange-over valve loses control pressure, and two four-ways surge
44 return of valve, has cut off the path for impacting handle 52a to C1 again, in rock drilling dash valve block, has automatically cut off rushing for rock drill
Oil sources is hit, rock drill stops impact.At the same time, the direction valve 12 that surges loses control pressure return, has cut off propulsion pressure regulation
Connection between valve block output pressure signal LS2 and Solid rocket engine valve group pressure signal LS1.The output pressure of propulsion pressure regulating valve block
LS2 is no longer participate in the control of Solid rocket engine valve group 20, and pressure when propulsion is returned is controlled by pressure valve 21b is return.Overflow valve
43 overflow, has reached propeller auto-returned, has been automatically stopped two control targes of impact.
Due to the effect of automatic anti-blocking pricker function, when the pressure drop of rock drill rotation motor 04a, hydraulic control system
Just automatically by above-mentioned contrary program recovery to the high speed rock drilling working condition that impact is advanced with total pressure again.
The invention provides a kind of new rock drill anti-sticking pricker control system, when rock drill rotational pressure rises, tool
Standby rock drill propelling cylinder pressure reduced automatically, stops propulsion, outside rock drill auto-returned, be also equipped with automatic during rock drill return
Stop the function of impact, and prior art compares, control function is the most complete.And this control system all adopts variable pump
LS control functions, the characteristics of with good performance, Hydraulic Elements highly versatile, efficient energy-saving is automatically controlled.
Above-described is only the preferred embodiment of the present invention.It should be understood that for the person of ordinary skill of the art,
Under technology provided by the present invention enlightenment, as the common knowledge of this area, other equivalent modifications and improvement can also be made,
Also should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of variable pump of rock drill anti-sticking pricker hydraulic control system, including LS control, rock drilling dash valve block, propulsion control valve
Group, propulsion pressure regulating valve block, anti-sticking pricker valve block and pilot handle control valve group, it is characterised in that：The outlet and propulsion control of variable pump
Air relief valve connection in the oil-in of valve group processed, rock drilling dash valve block, the guide of the output of the air relief valve as pilot handle
Control oil sources, control rock drill impact the guide oil of handle after the direction valve control of surging of anti-sticking pricker valve block again, and light punching
Hit joystick guide oil be connected to together rock drilling dash valve block the first shuttle valve two ends, the output of first shuttle valve is then
The direction valve that surges of rock drilling dash valve block is controlled, the direction valve that surges controls the output pressure signal of propulsion pressure regulating valve block again
It whether is connected with the pressure signal of Solid rocket engine valve group, the two ends of the second shuttle valve of rock drilling dash valve block are connected to propulsion control valve
Another rock drill pressure signal inside pressure signal and Solid rocket engine valve group in group, the output of second shuttle valve then and
The pressure oil port connection of the overflow valve of rock drilling dash valve block, while being also connected with the LS control ports of variable pump；
Action advances oil cylinder advances and returns the guide oil of handle after two four-way hydraulic operated valve controls of anti-sticking pricker valve block, even
The control end of direction of propulsion valve in Solid rocket engine valve group is connected to, what its neutralization action advances oil cylinder propulsion guide oil connected also has
The control mouth of the direction valve that surges of anti-sticking pricker valve block, impacts the guide oil of handle again by direction valve control rock drill that surges
Break-make, the oil-in of direction of propulsion valve are connected with the oil-out of variable pump after propelling pressure recuperation valve, direction of propulsion valve
Two oil-outs are connected the two ends for being followed by propelling cylinder respectively with two overflow valves, and the pressure signal oil of direction of propulsion valve can be with
It is respectively turned on two pressure-control valves and pressure signal is connected to by exterior tubing the second shuttle valve of rock drilling dash valve block
On；
In anti-sticking pricker valve block, rock drill rotation motor rotates forward pressure oil and the first overflow valve, the pressure oil of the second overflow valve
Mouthful connection, the oil return opening of two overflow valves be connecteds with control oil return pipe after connecting a throttle orifice respectively again, a throttle orifice and
The junction of the first overflow valve controls two four-way hydraulic operated valves of anti-sticking pricker valve block, and two four-way hydraulic operated valves are controlled and pushed away
Enter direction valve propulsion and return the guide oil normality or reverse operating of handle, the connection of another throttle orifice and the second overflow valve
The control port at place and the balanced valve on propulsion pressure regulating valve block is connected；
Propulsion pressure regulating valve block in, output pressure signal and propulsion pressure regulating valve block balanced valve, propulsion pressure regulating valve block overflow valve with
And a hydraulic fluid port connection of the direction valve that surges of propulsion pressure regulating valve block, output pressure can also be made under the direction valve normality of surging
Another pressure oil port of overflow valve on signal and propulsion pressure regulating valve block connects, and the control port of the direction valve that surges and rock drilling are rushed
The control rock drill hit on valve block impacts the guide oil of handle again and is connected.
2. a kind of rock drill anti-sticking pricker hydraulic control system according to claim 1, it is characterised in that：By card pricker in the air
The direction valve that surges in valve block, makes the guide oil that control rock drill impacts handle again not be controlled, and realizes that simplifying anti-sticking pricker pushes away
The function of rock drill impact is automatically stopped when entering device auto-returned, and the corresponding propeller that simplifies reduces pressure functional automatically.
3. a kind of rock drill anti-sticking pricker hydraulic control system according to claim 1, it is characterised in that：In rock drilling control valve block
The pilot control of air relief valve output can be substituted by other pilot control in hydraulic system.
4. a kind of rock drill anti-sticking pricker hydraulic control system according to claim 1, it is characterised in that：Pilot handle, can use
Pilot-actuated valve is substituted.
5. a kind of rock drill anti-sticking pricker hydraulic control system according to claim 4, it is characterised in that：Described pilot control
Valve is electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071094.1A CN103821451B (en) | 2014-02-28 | 2014-02-28 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071094.1A CN103821451B (en) | 2014-02-28 | 2014-02-28 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
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| CN103821451A CN103821451A (en) | 2014-05-28 |
| CN103821451B true CN103821451B (en) | 2017-04-12 |
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| CN201410071094.1A Active CN103821451B (en) | 2014-02-28 | 2014-02-28 | Hydraulic control system of anti-clamping drill rod of rock drilling machine |
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| CN109236764B (en) * | 2018-12-10 | 2019-03-22 | 中国铁建重工集团有限公司 | The impulsive control hydraulic system of drill jumbo |
| CN113638943B (en) * | 2021-08-12 | 2024-06-14 | 中国铁建重工集团股份有限公司 | Impact hydraulic control system and drilling jumbo |
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| CN100451352C (en) * | 2003-08-20 | 2009-01-14 | 株式会社小松制作所 | Hydraulic drive control device |
| JP2005098455A (en) * | 2003-09-26 | 2005-04-14 | Mitsubishi Heavy Ind Ltd | Hydraulic controller of industrial machinery |
| CN102536109B (en) * | 2011-12-26 | 2014-07-09 | 三一重型装备有限公司 | Rock drilling impact pressure regulating device and rock drilling machine with same |
| CN102561936B (en) * | 2012-01-20 | 2014-02-19 | 中船重工中南装备有限责任公司 | Rock drilling control system of hydraulic rock drilling machine |
| CN103470181B (en) * | 2013-09-23 | 2015-07-08 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Rock drilling device propulsion one-way delay response method and device for realizing method |
| CN203716837U (en) * | 2014-02-28 | 2014-07-16 | 金川集团股份有限公司 | Anti-clamping bit hydraulic control system for rock drill |
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