CN107061395B - Rock drill air defense hits, anti-sticking energy-saving type Hydraulic system and control method - Google Patents
Rock drill air defense hits, anti-sticking energy-saving type Hydraulic system and control method Download PDFInfo
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- CN107061395B CN107061395B CN201710241194.8A CN201710241194A CN107061395B CN 107061395 B CN107061395 B CN 107061395B CN 201710241194 A CN201710241194 A CN 201710241194A CN 107061395 B CN107061395 B CN 107061395B
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- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses rock drill air defenses to hit, anti-sticking energy-saving type Hydraulic system and control method, it includes hydraulic power unit, and the hydraulic power unit is connected with forward direction into rail and feed reversing oil pipe by feed reverse valve；The hydraulic power unit is connected by impacting reversal valve with impact oil pipe and low pressure impact oil pipe；First pilot operated directional control valve is installed, the hydraulic control end of first pilot operated directional control valve is connected with forward direction into rail by the first hydraulic control oil pipe, and first pilot operated directional control valve is connected with impact oil cylinder on the oil circuit after the impact oil pipe；The forward direction is connected by the first reversal valve and the second reversal valve with feed cylinder into rail.Whether this hydraulic system is with impact of the feed pressure size to control rock drill, to ensure that rock drill empty will not be beaten, the service life of equipment is extended, energy loss is reduced.
Description
Technical field
The invention belongs to rock drilling equipment fields, and in particular to rock drill air defense hits, anti-sticking energy-saving type Hydraulic system and control
Method.
Background technology
Currently, impact, feeding and the precession system of most of rock drill are independent from each other in the market, it is respectively adopted mutually
Thus there is defect below in independent hydraulic control system：
（1）Rock stratum or contact force are not exposed to not enough or when not having course feed in drill hammer, just push impact control
The percussion action of handle processed, rock drill may turn on, and may result in rock drill sky in this way and beats, i.e., impact at this time do it is useless
Work(does not have rock drilling any effect；If long-term sky is beaten can cause very big injury to rock drill, shorten rock drill
Service life increases construction cost；But also dynamic loss of energy can be caused.
（2）Rock drill encounter the situation of operating mode complexity and be stuck stop rotating when, and feed function and rotation at this time
Function also in ceaselessly positive feeding and rotates in the forward direction, and the more can block the more tight so as to cause bit of rock drilling machine, or even eventually result in
Drill bit and shank of rock drill fracture destroy rock drilling machine equipment, increase construction cost inside hole, and fail to meet the time limit of a project progress,
Reduce working efficiency.
Invention content
The object of the present invention is to provide rock drill air defenses to hit, anti-sticking energy-saving type Hydraulic system and control method, this hydraulic pressure system
Whether system is with impact of the feed pressure size to control rock drill, to ensure that rock drill empty will not be beaten, making for equipment is extended
With the service life, reduce energy loss；And the direction of feed of rock drill is controlled in hydraulic system with rotational pressure size, in turn
The case where rock drill is stuck is avoided, is played a very good protection to equipment.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this：Rock drill air defense hits, anti-sticking energy-saving
Type hydraulic system, it includes hydraulic power unit, and the hydraulic power unit is by feed reverse valve with positive into rail and feed reversing
Oil pipe is connected；The hydraulic power unit is connected by impacting reversal valve with impact oil pipe and low pressure impact oil pipe；The hydraulic power unit
It is connected with rotation oil inlet pipe and rotation oil return pipe by rotary reversing valve；
First pilot operated directional control valve, the hydraulic control of first pilot operated directional control valve are installed on the oil circuit after the impact oil pipe
End is connected with forward direction into rail by the first hydraulic control oil pipe, and first pilot operated directional control valve is connected with impact oil cylinder；
The forward direction is connected by the first reversal valve and the second reversal valve with feed cylinder into rail；The rotation oil inlet
Pipe is connected with the first reversal valve and the second reversal valve hydraulic control end simultaneously by the second hydraulic control oil pipe, the rotation oil inlet pipe and rotation
Oil return pipe is connected with rotary fluid motor.
It is connected with the second pilot operated directional control valve by third hydraulic control oil pipe on the first hydraulic control oil pipe, second hydraulic control is changed
It is connected to valve with fuel tank by the first overflow valve.
It is described positive into the second overflow valve and third reversal valve is also associated on rail, connect after the third reversal valve
It is connected to third overflow valve, the oil outlet of second overflow valve, third reversal valve and third overflow valve is connected with fuel tank.
First pilot operated directional control valve uses two-position three way pilot operated directional control valve, the unlatching of the two-position three way pilot operated directional control valve
Pressure can be adjusted.
Second pilot operated directional control valve uses two-position two-way hydraulic control reversal valve, the unlatching of the two-position two-way hydraulic control reversal valve
Pressure is equal with the Opening pressure of the first pilot operated directional control valve.
Two-position four-way pilot operated directional control valve is respectively adopted for first reversal valve and the second reversal valve and two-position two-way hydraulic control changes
To valve.
The Opening pressure of first reversal valve and the second reversal valve is equal.
It is parallel with check valve on second reversal valve.
Another hydraulic control end of first reversal valve and the second reversal valve is connected separately with the 4th overflow valve and the 5th stream valve.
It is hit using rock drill air defense described in any one, the control method of anti-sticking energy-saving type hydraulic system, including following step
Suddenly：
1）The Opening pressure of the first pilot operated directional control valve and the second pilot operated directional control valve is set, and keeps its Opening pressure consistent；
2）It opens positive into rail, startup feed cylinder；
3）When rock drill touch not yet rock stratum or due to rock stratum hole, it is soft when, make the positive pressure into rail
Power very little, the positive pressure into rail is less than the commutation Opening pressure of the first pilot operated directional control valve, the first pilot operated directional control valve at this time
It will not commutate, impact the hydraulic oil of oil pipe directly will flow back into fuel tank by the first pilot operated directional control valve, and rock drill is just at this time
Do not have percussion；
4）When rock drill touches harder rock stratum, the positive pressure into rail can follow the increase of load and increase
Add, when the pressure of forward direction into rail increases to the commutation Opening pressure of the first pilot operated directional control valve, the first pilot operated directional control valve is opened
And commutate, impact the hydraulic oil of oil pipe after commutation directly will enter impact oil cylinder by the first pilot operated directional control valve, in turn
It opens rock drill drill hammer and carries out impact drilling action；At the same time the second pilot operated directional control valve can also open commutation therewith, resistance
The hydraulic oil oil return box for only impacting oil pipe oil circuit, ensures that rock drill effectively impacts in this way；
5）When bit of rock drilling machine or drill steel are stuck when can not rotate, the pressure rotated on oil inlet pipe just will increase,
When pressure is more than the spring pressure value of the first reversal valve and the setting of the second reversal valve, the first reversal valve and the second reversal valve will
It commutates, the first reversal valve and the second reversal valve will be reversed feeding all in left position, at this time feed cylinder at this time, in turn
Rock drill is set reversely to exit, and during reversed exit, load pressure reduces, the positive pressure into rail can also drop
It is low, so that it is less than the commutation Opening pressure of the first pilot operated directional control valve, the first pilot operated directional control valve will not commutate, and impact oil pipe
Hydraulic oil directly will flow back into fuel tank by the first pilot operated directional control valve, and rock drill there will not be percussion at this time；Such rock drilling
Machine will be slowly rejected；
6）During exiting, rotate the pressure on oil inlet pipe also can gradually reduce therewith, when pressure is changed less than first
When to the spring setting value of valve and the second reversal valve, the first reversal valve and the second reversal valve will restore original position and normal work
Make, rock drill normally rotation and positive feeding, during feeding, bit load increases, and then causes positive into rail
Pressure increases to the commutation Opening pressure of the first pilot operated directional control valve, and the first pilot operated directional control valve is opened and commutated, rushes after commutation
Hit the hydraulic oil of oil pipe directly will enter impact oil cylinder by the first pilot operated directional control valve, so open rock drill drill hammer into
Row impact drilling acts；At the same time the second pilot operated directional control valve can also open commutation therewith, prevent the hydraulic pressure of impact oil pipe oil circuit
Oily oil return box ensures that rock drill effectively impacts in this way.
The method have the advantages that：
1, dynamic come the impact for controlling rock drill with feed pressure size in systems by using above-mentioned hydraulic system
Make, and then ensure that rock drill will not occur sky and hit, and then extends its service life.
2, by the way that forward direction is connected between rail and the first pilot operated directional control valve with the first hydraulic control oil pipe, in rock drill
There are no touch rock stratum or due to rock stratum hole, it is soft make it is positive into the case of the pressure very little of rail, it is positive at this time
It is less than the commutation Opening pressure of the first pilot operated directional control valve into the pressure of rail, the first pilot operated directional control valve will not change at this time
To, and the hydraulic oil for impacting oil pipe directly will flow back into fuel tank by the first pilot operated directional control valve, there will be no punchings for rock drill at this time
The effect of hitting would not occur sky and beat, and then extend the service life of rock drill, improve work efficiency, saved cost, together
When also reduce energy consumption.
3, when rock drill touches harder rock stratum, the pressure into rail positive at this time can follow the increase of load and
Increase, when the pressure of forward direction into rail increases to the commutation Opening pressure of the first pilot operated directional control valve, the first pilot operated directional control valve is just
It can open and commutate, impact the hydraulic oil of oil pipe after commutation directly will enter impact oil by the first pilot operated directional control valve
Cylinder, and then open rock drill drill hammer and carry out impact drilling action；At the same time due to the second pilot operated directional control valve and third liquid
Oil-control pipe is connected with the first hydraulic control oil pipe, and while the first pilot operated directional control valve is opened and commutated, the second pilot operated directional control valve also can be with
Unlatching commutation, may be prevented from impact oil pipe oil circuit hydraulic oil oil return box, this ensures that rock drill effectively impacts, no
Rock drill sky can be caused to beat, rock drill is avoided to be damaged, improve working efficiency, it is cost-effective.
4, the principle with load is depended on according to pressure in hydraulic system, it can be by feed cylinder by above-mentioned hydraulic system
Load pressure feedback to impact oil cylinder impact system, by feedback regulation by control the first pilot operated directional control valve unlatching,
The final unlatching for realizing impact oil cylinder, effectively avoids the sky when not feeding and hits action, improve the use of rock drill
Service life reduces energy consumption.
5, the direction of feed for controlling rock drill in this hydraulic system with rotational pressure size, to ensure that rock drill will not
It is stuck, influences normal operation.
6, oil inlet pipe hydraulic control with the first reversal valve and the second reversal valve simultaneously by hydraulic control oil pipe will be rotated in this system
End is connected, and in the course of work, when bit of rock drilling machine or drill steel are stuck when can not rotate, rotates pressure on oil inlet pipe just
It will increase, when pressure is more than the spring pressure value of the first reversal valve and the setting of the second reversal valve, the first reversal valve and second changes
It will commutate to valve, the first reversal valve and the second reversal valve will be reversed all in left position, at this time feed cylinder at this time
Feeding, and then rock drill is made reversely to exit, such rock drill will be slowly rejected, and the pressure rotated on oil inlet pipe also can be therewith
Gradually reduce, when pressure is less than the spring setting value of the first reversal valve and the second reversal valve, the first reversal valve and second changes
It will restore original position to valve and work normally, rock drill normally rotation and positive feeding.This ensures that on rock drill
Drill bit and drill steel and other accessories will not be stuck in the inside, to improve work efficiency with it is cost-effective.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the overall structure diagram at the first visual angle of the present invention.
In figure：Hydraulic power unit 1, feed reverse valve 2, impact reversal valve 3, feed reversing oil pipe 4, it is positive into rail 5, it is low
Pressure impact oil pipe 6, impact oil pipe 7, the first hydraulic control oil pipe 8, the second pilot operated directional control valve 9, the first overflow valve 10, third hydraulic control oil pipe
11, the first pilot operated directional control valve 12, impact oil cylinder 13, precession oil pipe 14, the first reversal valve 15, the second reversal valve 16, feed cylinder
17, the second overflow valve 18, third reversal valve 19, third overflow valve 20, the 4th overflow valve the 22, the 5th stream valve 23, rotary reversing valve
24, oil inlet pipe 25, rotation oil return pipe 26, the second hydraulic control oil pipe 27, rotary fluid motor 28 are rotated.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
Such as Fig. 1, rock drill air defense hits, anti-sticking energy-saving type hydraulic system, it includes hydraulic power unit 1, and the hydraulic power unit 1 is logical
Feed reverse valve 2 is crossed with forward direction to be connected into rail 5 and feed reversing oil pipe 4；The hydraulic power unit 1 is by impacting reversal valve 3
It is connected with impact oil pipe 7 and low pressure impact oil pipe 6；The hydraulic power unit 1 by rotary reversing valve 24 with rotation oil inlet pipe 25 and
Oil return pipe 26 is rotated to be connected；
Further, first pilot operated directional control valve 12, first hydraulic control are installed on the oil circuit after the impact oil pipe 7
The hydraulic control end of reversal valve 12 is connected with forward direction into rail 5 by the first hydraulic control oil pipe 8, first pilot operated directional control valve 12 and punching
Oil cylinder 13 is hit to be connected；
Further, the forward direction passes through the first reversal valve 15 and the second reversal valve 16 and feed cylinder 17 into rail 5
It is connected；The rotation oil inlet pipe 25 by the second hydraulic control oil pipe 27 simultaneously with 16 hydraulic control end of the first reversal valve 15 and the second reversal valve
It is connected, the rotation oil inlet pipe 25 and rotation oil return pipe 26 are connected with rotary fluid motor 28.In the course of work, feed cylinder 17
Feed pressure will feed back to simultaneously impact oil pipe 7, by that will impact between oil pipe 7 and the first pilot operated directional control valve 12 with the first liquid
Oil-control pipe 8 is connected, and the system pressure feedback of feedback can be given to the first pilot operated directional control valve 12, only when system load pressure reaches
When to certain value, it can just control the first pilot operated directional control valve 12 and open commutation, the sky for effectively avoiding impact drill is hit, and improves work
Make efficiency, reduces energy consumption.
Further, it is connected with the second pilot operated directional control valve 9 by third hydraulic control oil pipe 11 on the first hydraulic control oil pipe 8,
Second pilot operated directional control valve 9 is connected by the first overflow valve 10 with fuel tank.By by the second pilot operated directional control valve 9 simultaneously with first
Hydraulic control oil pipe 8 is connected, and can ensure to also ensure the second pilot operated directional control valve 9 while the first pilot operated directional control valve 12 opens commutation
Unlatching and commutation ensure that in load pressure by the cooperation between the first pilot operated directional control valve 12 and the second pilot operated directional control valve 9
Rock drill can work normally when reaching setting value, and then carry out rock drilling operation.
Further, described positive into being also associated with the second overflow valve 18 and third reversal valve 19 on rail 5, described the
It is connected with third overflow valve 20, second overflow valve 18, third reversal valve 19 and third overflow valve 20 after three reversal valves 19
Oil outlet be connected with fuel tank.It is positive into the fluid energy on rail 5 when ensure that using the above structure without feed motion
Fuel tank is enough flowed back by third reversal valve 19 and third overflow valve 20.
Further, first pilot operated directional control valve 12 uses two-position three way pilot operated directional control valve, the two-position three way hydraulic control
The Opening pressure of reversal valve can be adjusted.By adjusting its Opening pressure, reaches and adjusted the work that rock drill drill hammer is opened
With.
Further, second pilot operated directional control valve 9 uses two-position two-way hydraulic control reversal valve, the two-position two-way hydraulic control to change
Opening pressure to valve is equal with the Opening pressure of the first pilot operated directional control valve 12.By adjusting its Opening pressure, reach second
The function of 12 synchronization action of pilot operated directional control valve 9 and the first pilot operated directional control valve.
Further, two-position four-way pilot operated directional control valve and two are respectively adopted in first reversal valve, 15 and second reversal valve 16
Position two-way pilot operated directional control valve.It is connected with rotation oil inlet pipe 25 by using two liquid controlled reversings, the side of feedback regulation can be passed through
Formula receives the precession load of rotary fluid motor 28, when card resistance occurs since load pressure increases, and then can cause to be rotated into
The pressure of oil pipe 25 increases, and will control the first reversal valve and the second reversal valve at this time will commutate, at this time the first commutation
Valve and the second reversal valve are all in left position, and feed cylinder will be reversed feeding at this time, and then rock drill is made reversely to exit, in this way
Rock drill will be slowly rejected, and rotate the pressure on oil inlet pipe also can gradually reduce therewith, when pressure is less than the first commutation
When the spring setting value of valve and the second reversal valve, the first reversal valve and the second reversal valve will restore original position and work normally,
Rock drill normally rotation and positive feeding.This ensures that the drill bit and drill steel and other accessories on rock drill will not be stuck in
The inside, to improve work efficiency with it is cost-effective.
Further, the Opening pressure of first reversal valve, 15 and second reversal valve 16 is equal.Using identical unlatching
Pressure ensure that the synchronization of two reversal valves work.
Further, it is parallel with check valve 21 on second reversal valve 16.
Further, another hydraulic control end of first reversal valve, 15 and second reversal valve 16 is connected separately with the 4th overflow
Valve 22 and the 5th flows valve 23.
Embodiment 2：
It is hit using rock drill air defense described in any one, the control method of anti-sticking energy-saving type hydraulic system, including following step
Suddenly：
The Opening pressure of 1 setting the first pilot operated directional control valve 12 and the second pilot operated directional control valve 9, and keep its Opening pressure one
It causes；
2 open forward direction into rail 5, start feed cylinder 17；
3 when rock drill touch not yet rock stratum or due to rock stratum hole, it is soft when, make the positive pressure into rail 5
Power very little, the positive pressure into rail 5 is less than the commutation Opening pressure of the first pilot operated directional control valve 12, the first liquid controlled reversing at this time
Valve 12 will not commutate, and the hydraulic oil of impact oil pipe 7 directly will flow back into fuel tank by the first pilot operated directional control valve 12, dig at this time
There will be no percussions for rock machine；
4 when rock drill touches harder rock stratum, and the positive pressure into rail 5 can follow the increase of load and increase
Add, when the pressure of forward direction into rail 5 increases to the commutation Opening pressure of the first pilot operated directional control valve 12, the first pilot operated directional control valve 12
It opens and commutates, impact the hydraulic oil of oil pipe 7 after commutation directly will enter impact oil by the first pilot operated directional control valve 12
Cylinder 13, and then open rock drill drill hammer and carry out impact drilling action；At the same time the second pilot operated directional control valve 9 can also be held therewith
Commutation is opened, the hydraulic oil oil return box of impact 7 oil circuit of oil pipe is prevented, ensures that rock drill effectively impacts in this way；
5 are stuck when bit of rock drilling machine or drill steel when can not rotate, and the pressure rotated on oil inlet pipe 25 just will increase,
When pressure is more than the spring pressure value of the first reversal valve 15 and the setting of the second reversal valve 16, the commutation of the first reversal valve 15 and second
Valve 16 will commutate, and the first reversal valve 15 and the second reversal valve 16 are all in left position at this time, and feed cylinder 17 will at this time
It is reversed feeding, and then rock drill is made reversely to exit, and during reversed exit, load pressure reduces, it is positive into oil supply
The pressure of pipe 5 can also reduce, and so that it is less than the commutation Opening pressure of the first pilot operated directional control valve 12, the first pilot operated directional control valve 12 will not
It commutates, the hydraulic oil of impact oil pipe 7 directly will flow back into fuel tank by the first pilot operated directional control valve 12, and rock drill is not yet at this time
Have percussion；Rock drill will be slowly rejected in this way；
6 during exiting, and rotate the pressure on oil inlet pipe 25 also can gradually reduce therewith, when pressure is changed less than first
When to the spring setting value of valve 15 and the second reversal valve 16, the first reversal valve 15 and the second reversal valve 16 will restore original position and
Normal work, rock drill normally rotation and positive feeding, during feeding, bit load increases, and then leads to positive feeding
The pressure of oil pipe 5 increases to the commutation Opening pressure of the first pilot operated directional control valve 12, and the first pilot operated directional control valve 12 is opened and commutated,
The hydraulic oil of impact oil pipe 7 directly will enter impact oil cylinder 13 by the first pilot operated directional control valve 12 after commutation, and then open
Rock drill drill hammer carries out impact drilling action；At the same time the second pilot operated directional control valve 9 can also open commutation therewith, prevent punching
The hydraulic oil oil return box for hitting 7 oil circuit of oil pipe ensures that rock drill effectively impacts in this way.
The present invention the course of work and operation principle be：
When so oil cylinder 17 is not fed or bit contact is to when rock stratum is empty or weak stratum, pressed according in hydraulic system
Power depends on the principle of load, and the pressure in hydraulic system is smaller at this time, i.e. the positive pressure value into rail 5 is smaller, passes through
This pressure value is fed back to the first pilot operated directional control valve 12 by the first hydraulic control oil pipe 8, due to and not up to the first pilot operated directional control valve 12
Opening pressure, fuel tank will be returned directly to by the first pilot operated directional control valve 12 by impacting the hydraulic oil of oil pipe 7 at this time, and without punching
Action is hit, sky is effectively avoided and hits；
When rock drill touches harder rock stratum, the pressure into rail 5 positive at this time can follow the increase of load and
Increase, when the pressure of forward direction into rail 5 increases to the commutation Opening pressure of the first pilot operated directional control valve 12, the first pilot operated directional control valve
12 may turn on and commutate, and impact the hydraulic oil of oil pipe 7 after commutation and will directly be entered by the first pilot operated directional control valve 12
Oil cylinder 13 is impacted, and then opens rock drill drill hammer and carries out impact drilling action；At the same time due to the second pilot operated directional control valve 9
It is connected with third hydraulic control oil pipe 11 with the first hydraulic control oil pipe 8, while the first pilot operated directional control valve 12 is opened and is commutated, the second hydraulic control
Reversal valve 9 can also open commutation therewith, the hydraulic oil oil return box of impact 7 oil circuit of oil pipe be may be prevented from, this ensures that rock drilling
Machine effectively impacts, and rock drill sky will not be caused to beat, rock drill is avoided to be damaged, and improves working efficiency, cost-effective.
In the course of work, when bit of rock drilling machine or drill steel are stuck when can not rotate, the pressure on oil inlet pipe 25 is rotated
Power just will increase, when pressure is more than the spring pressure value of the first reversal valve 15 and the setting of the second reversal valve 16, the first reversal valve
15 and second reversal valve 16 will commutate, the first reversal valve 15 and the second reversal valve 16 be all in left position at this time, at this time into
It will be reversed feeding to oil cylinder 17, and then rock drill is made reversely to exit, such rock drill will be slowly rejected, and rotate oil inlet
Pressure on pipe 25 also can gradually reduce therewith, when pressure is less than the spring setting of the first reversal valve 15 and the second reversal valve 16
When value, the first reversal valve 15 and the second reversal valve 16 will restore original position and work normally, and rock drill normally rotates and forward direction
Feeding.This ensures that the drill bit and drill steel and other accessories on rock drill will not be stuck in the inside, to improve work
Efficiency is cost-effective simultaneously.
Above-described embodiment is used for illustrating the present invention, rather than limits the invention, the present invention spirit and
In scope of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (8)
1. rock drill air defense is hit, anti-sticking energy-saving type hydraulic system, it includes hydraulic power unit（1）, the hydraulic power unit（1）By into
To reversal valve（2）With forward direction into rail（5）With feed reversing oil pipe（4）It is connected；The hydraulic power unit（1）It is commutated by impacting
Valve（3）With impact oil pipe（7）Oil pipe is impacted with low pressure（6）It is connected；The hydraulic power unit（1）Pass through rotary reversing valve（24）With rotation
Rotate into oil pipe（25）With rotation oil return pipe（26）It is connected；It is characterized in that：
The impact oil pipe（7）First pilot operated directional control valve is installed on oil circuit later（12）, first pilot operated directional control valve
（12）Hydraulic control end pass through the first hydraulic control oil pipe（8）With forward direction into rail（5）It is connected, first pilot operated directional control valve（12）With
Impact oil cylinder（13）It is connected；
It is described positive into rail（5）Pass through the first reversal valve（15）With the second reversal valve（16）With feed cylinder（17）It is connected；
The rotation oil inlet pipe（25）Pass through the second hydraulic control oil pipe（27）Simultaneously with the first reversal valve（15）With the second reversal valve（16）Liquid
It controls end to be connected, the rotation oil inlet pipe（25）With rotation oil return pipe（26）With rotary fluid motor（28）It is connected；
The first hydraulic control oil pipe（8）It is upper to pass through third hydraulic control oil pipe（11）With the second pilot operated directional control valve（9）It is connected, described second
Pilot operated directional control valve（9）Pass through the first overflow valve（10）It is connected with fuel tank；
It is described positive into rail（5）On be also associated with the second overflow valve（18）With third reversal valve（19）, the third commutation
Valve（19）It is connected with third overflow valve later（20）, second overflow valve（18）, third reversal valve（19）With third overflow valve
（20）Oil outlet be connected with fuel tank.
2. rock drill air defense according to claim 1 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described first
Pilot operated directional control valve（12）Using two-position three way pilot operated directional control valve, the Opening pressure of the two-position three way pilot operated directional control valve can be adjusted
Section.
3. rock drill air defense according to claim 1 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described second
Pilot operated directional control valve（9）Using two-position two-way hydraulic control reversal valve, Opening pressure and the first liquid of the two-position two-way hydraulic control reversal valve
Control reversal valve（12）Opening pressure it is equal.
4. rock drill air defense according to claim 1 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described first
Reversal valve（15）With the second reversal valve（16）Two-position four-way pilot operated directional control valve and two-position two-way hydraulic control reversal valve is respectively adopted.
5. rock drill air defense according to claim 1 or 4 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described
One reversal valve（15）With the second reversal valve（16）Opening pressure it is equal.
6. rock drill air defense according to claim 1 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described second
Reversal valve（16）On be parallel with check valve（21）.
7. rock drill air defense according to claim 1 is hit, anti-sticking energy-saving type hydraulic system, it is characterised in that：Described first
Reversal valve（15）With the second reversal valve（16）Another hydraulic control end be connected separately with the 4th overflow valve（22）With the 5th overflow valve
（23）.
8. it is hit using rock drill air defense described in claim 1-7 any one, the control method of anti-sticking energy-saving type hydraulic system,
It is characterized in that, includes the following steps：
1）Set the first pilot operated directional control valve（12）With the second pilot operated directional control valve（9）Opening pressure, and keep its Opening pressure one
It causes；
2）It opens positive into rail（5）, start feed cylinder（17）；
3）When rock drill touch not yet rock stratum or due to rock stratum hole, it is soft when, make positive into rail（5）Pressure
Very little, it is positive into rail at this time（5）Pressure be less than the first pilot operated directional control valve（12）Commutation Opening pressure, the first hydraulic control changes
To valve（12）It will not commutate, impact oil pipe（7）Hydraulic oil will directly pass through the first pilot operated directional control valve（12）Flow back into oil
Case, there will be no percussions for rock drill at this time；
4）It is positive into rail when rock drill touches harder rock stratum（5）Pressure can follow the increase of load and increase,
When forward direction is into rail（5）Pressure increase to the first pilot operated directional control valve（12）Commutation Opening pressure, the first pilot operated directional control valve
（12）It opens and commutates, impact oil pipe after commutation（7）Hydraulic oil will directly pass through the first pilot operated directional control valve（12）Into
To impact oil cylinder（13）, and then open rock drill drill hammer and carry out impact drilling action；At the same time the second pilot operated directional control valve
（9）Also commutation can be opened therewith, prevent impact oil pipe（7）The hydraulic oil oil return box of oil circuit ensures that rock drill is effective in this way
Impact；
5）When bit of rock drilling machine or drill steel are stuck when can not rotate, oil inlet pipe is rotated（25）On pressure just will increase,
When pressure is more than the first reversal valve（15）With the second reversal valve（16）When the spring pressure value of setting, the first reversal valve（15）With
Two reversal valves（16）It will commutate, at this time the first reversal valve（15）With the second reversal valve（16）All in left position, at this time into
To oil cylinder（17）It will be reversed feeding, and then rock drill is made reversely to exit, and during reversed exit, load pressure drop
It is low, it is positive into rail（5）Pressure can also reduce, make its be less than the first pilot operated directional control valve（12）Commutation Opening pressure,
One pilot operated directional control valve（12）It will not commutate, impact oil pipe（7）Hydraulic oil will directly pass through the first pilot operated directional control valve（12）
Fuel tank is flowed back into, rock drill there will not be percussion at this time；Rock drill will be slowly rejected in this way；
6）During exiting, oil inlet pipe is rotated（25）On pressure also can therewith gradually reduce, when pressure is changed less than first
To valve（15）With the second reversal valve（16）Spring setting value when, the first reversal valve（15）With the second reversal valve（16）It will restore
Originally position and work normally, rock drill normally rotation and positive feeding, during feeding, bit load increases, and then causes
Forward direction is into rail（5）Pressure increase to the first pilot operated directional control valve（12）Commutation Opening pressure, the first pilot operated directional control valve
（12）It opens and commutates, impact oil pipe after commutation（7）Hydraulic oil will directly pass through the first pilot operated directional control valve（12）Into
To impact oil cylinder（13）, and then open rock drill drill hammer and carry out impact drilling action；At the same time the second pilot operated directional control valve
（9）Also commutation can be opened therewith, prevent impact oil pipe（7）The hydraulic oil oil return box of oil circuit ensures that rock drill is effective in this way
Impact.
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| CN201710241194.8A CN107061395B (en) | 2017-04-13 | 2017-04-13 | Rock drill air defense hits, anti-sticking energy-saving type Hydraulic system and control method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107906084B (en) * | 2017-10-27 | 2024-07-12 | 中国铁建重工集团股份有限公司 | Rock drill and hydraulic drilling control system thereof |
| CN109869362B (en) * | 2019-01-31 | 2021-01-26 | 中国铁建重工集团股份有限公司 | Hydraulic system for simulating rock drilling load and simulation test method of rock drilling load |
| CN113153200A (en) * | 2021-04-01 | 2021-07-23 | 湖南创远智能发展有限责任公司 | Hydraulic rock drill electrohydraulic control system and method |
| CN115559953B (en) * | 2022-10-20 | 2023-09-08 | 四川蓝海智能装备制造有限公司 | Drill rod-blocking-preventing hydraulic oil circuit structure of rock drill and hydraulic control method |
| CN116415376B (en) * | 2023-06-08 | 2023-08-29 | 中国矿业大学(北京) | Rock energy while-drilling in-situ determination and control design method |
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| EP0758718A1 (en) * | 1995-08-11 | 1997-02-19 | Applied Power Inc. | Plough turning device |
| CN201818571U (en) * | 2010-09-27 | 2011-05-04 | 武桥重工集团股份有限公司 | Hydraulic system controlling two oil cylinders to sequentially telescope |
| CN103726784A (en) * | 2013-12-31 | 2014-04-16 | 山河智能装备股份有限公司 | Hydraulic drill carriage pushed control impacting hydraulic return circuit and control method of hydraulic drill carriage pushed control impacting hydraulic return circuit |
| CN205669515U (en) * | 2016-06-12 | 2016-11-02 | 湖北华源包装有限公司 | Oil piping system for automatic moulding machine |
| CN206636851U (en) * | 2017-04-13 | 2017-11-14 | 宜昌精博艺工程机械设备制造有限公司 | Rock drill air defense is hit, anti-sticking energy-saving type hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010084784A (en) * | 2008-09-29 | 2010-04-15 | Kubota Corp | Float control system for working machine |
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| EP0758718A1 (en) * | 1995-08-11 | 1997-02-19 | Applied Power Inc. | Plough turning device |
| CN201818571U (en) * | 2010-09-27 | 2011-05-04 | 武桥重工集团股份有限公司 | Hydraulic system controlling two oil cylinders to sequentially telescope |
| CN103726784A (en) * | 2013-12-31 | 2014-04-16 | 山河智能装备股份有限公司 | Hydraulic drill carriage pushed control impacting hydraulic return circuit and control method of hydraulic drill carriage pushed control impacting hydraulic return circuit |
| CN205669515U (en) * | 2016-06-12 | 2016-11-02 | 湖北华源包装有限公司 | Oil piping system for automatic moulding machine |
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