CN108916161A - A kind of atmospheric control and control method - Google Patents
A kind of atmospheric control and control method Download PDFInfo
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- CN108916161A CN108916161A CN201810971900.9A CN201810971900A CN108916161A CN 108916161 A CN108916161 A CN 108916161A CN 201810971900 A CN201810971900 A CN 201810971900A CN 108916161 A CN108916161 A CN 108916161A
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- valve
- way valve
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- mouthfuls
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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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
Abstract
The invention discloses a kind of atmospheric control and control methods, including foot valve, the first dual-pressure valve, the second dual-pressure valve, the first two-position five-way valve, the second two-position five-way valve, shuttle valve and cylinder；External air source is connected to the P mouth of foot valve and the P mouth of the second two-position five-way valve, and the A mouth of foot valve and B mouthfuls are connected to the control mouth of the P mouth and one end of the first two-position five-way valve；The air inlet of first dual-pressure valve one end and the air inlet of second dual-pressure valve one end are all connected to the A mouth of the first two-position five-way valve；The gas outlet of first dual-pressure valve is connected to the control mouth of second two-position five-way valve one end and an air inlet of shuttle valve, and the gas outlet of the second dual-pressure valve is connected to the control mouth of the second two-position five-way valve other end and another air inlet of shuttle valve；The gas outlet of shuttle valve is connected to the control mouth of the first two-position five-way valve other end；The A mouth of second two-position five-way valve and the second dual-pressure valve other end air inlet are all connected to cylinder.The present invention can adapt in strong magnetic environment and inflammable and explosive environment.
Description
Technical field
The present invention relates to gas control technical field more particularly to a kind of atmospheric controls and control method.
Background technique
Inflammable and explosive or there are in the working environment of strong magnetic, as the control system of underground coal mine used generally can not
Using electric control, it is easy to happen explosion；Or there are that generally can not use electric control in the large-scale workshop of strong magnetic, strong magnetic environment holds
Easily lead to electrical control failure.Meanwhile if there are flammable explosive gas in working environment, under the operating environment such as in mine,
Therefore the possibility that electric device unavoidably has generation electric spark brings hidden danger to safety in production.
Summary of the invention
The purpose of the present invention is to provide a kind of gas control control system and control method, can adapt in strong magnetic environment and easily
It fires in explosive environments.
For this purpose, the present invention uses following technical scheme：
A kind of atmospheric control is provided, including foot valve, the first two-position five-way valve, the first dual-pressure valve, the second dual-pressure valve,
Second two-position five-way valve, shuttle valve and cylinder；
External air source is connected to the P mouth of the foot valve and the P mouth of second two-position five-way valve, the A of the foot valve
Mouth is connected to the control mouth of the P mouth and one end of first two-position five-way valve with B mouthfuls；
The air inlet of first dual-pressure valve one end and the air inlet of second dual-pressure valve one end are all connected to the described 1st
The A mouth of position five-way valve；
The gas outlet of first dual-pressure valve be connected to second two-position five-way valve one end control mouth and the shuttle valve
An air inlet, the gas outlet of second dual-pressure valve is connected to the control mouth of the second two-position five-way valve other end and described
Another air inlet of shuttle valve；
The gas outlet of the shuttle valve is connected to the control mouth of the first two-position five-way valve other end；
The A mouth of second two-position five-way valve and the second dual-pressure valve other end air inlet are all connected to the cylinder.
It preferably, further include oil mist separator, the oil mist separator is connected to the P mouth and described second of the foot valve
The P mouth of two-position five-way valve.
Preferably, the R mouth of first two-position five-way valve and/or S mouthfuls are connected with exhaust shutter；And/or
The R mouth of second two-position five-way valve and/or S mouthfuls are connected with exhaust shutter.
Preferably, the position of first dual-pressure valve and the second dual-pressure valve is symmetrically pacified about second two-position five-way valve
Dress.
A kind of control method of atmospheric control is additionally provided in the present invention, including：
The on-off of second two-position five-way valve action control external air source and cylinder；
The first two-position five-way valve events are controlled by foot valve or shuttle valve；
The first dual-pressure valve and the second dual-pressure valve are controlled by foot valve, the first two-position five-way valve and the second two-position five-way valve
Gas outlet opens or closes, and the first dual-pressure valve and the second dual-pressure valve control the second two-position five-way valve events, while controlling shuttle valve
Gas outlet opens or closes.
Preferably, the second two-position five-way valve action control external air source and the on-off of cylinder include：
When the P mouth of the second two-position five-way valve is connected to B mouthfuls, then cylinder keeps previous action state；Second two-position five-way valve
P mouth be connected to A mouthfuls, then cylinder movement.
Preferably, when external air source is died, the first dual-pressure valve, the second dual-pressure valve, the first two-position five-way valve, the two or two
Five-way valve, shuttle valve and foot valve are kept the current status unchanged.
Preferably, controlling the first two-position five-way valve events by foot valve or shuttle valve includes：
If P mouthfuls of foot valve are connected to A mouthfuls, the P mouth of the first two-position five-way valve is connected to A mouthfuls, then passes through shuttle valve control first
Two-position five-way valve events, while the second two-position five-way valve events are controlled by the first dual-pressure valve or the second dual-pressure valve；
If P mouthfuls of foot valve are connected to B mouthfuls, the P mouth of the first two-position five-way valve is connected to B mouthfuls, then passes through foot valve control the
The movement of one two-position five-way valve.
Preferably, if P mouthfuls of foot valve are connected to A mouthfuls, the P mouth of the first two-position five-way valve is connected to A mouthfuls, is controlled by shuttle valve
First two-position five-way valve events include：
It is connected to if the current state of the second two-position five-way valve is P mouthfuls with A mouthfuls, the second dual-pressure valve control shuttle valve gas outlet has
Gas, shuttle valve control the first two-position five-way valve events；
It is connected to if the current state of the second two-position five-way valve is P mouthfuls with B mouthfuls, the first dual-pressure valve control shuttle valve gas outlet has
Gas, shuttle valve control the first two-position five-way valve events.
Preferably, if P mouthfuls of foot valve are connected to A mouthfuls, the P mouth of the first two-position five-way valve is connected to A mouthfuls, is pressed by first pair
The spool that valve or the second dual-pressure valve control the second two-position five-way valve, which acts, includes：
It is connected to if the current state of the first two-position five-way valve is P mouthfuls with A mouthfuls, controls the two or two by the second dual-pressure valve
Five-way valve movement；
If the P current state of the first two-position five-way valve is that mouth is connected to A mouthfuls, the two or two is controlled by the first dual-pressure valve
Five-way valve movement.
Beneficial effects of the present invention：Above-mentioned atmospheric control is applied to inflammable and explosive or there are forceful electric power in the present invention
In magnetic environment, control mode is stablized, and working environment will not be caused to explode because of electric spark, guarantees the working environment in workshop
There are electrical equipment control Its Failures in forceful electric power magnetic environment in safety or control system, and above-mentioned atmospheric control will not make gas
There is phenomenon of even calling a taxi in cylinder.
Detailed description of the invention
Fig. 1 is the working principle diagram of atmospheric control of the invention；
Fig. 2 is the top view of material conveyor of the invention；
Fig. 3 is the side view of material conveyor of the invention；
Fig. 4 is the working principle diagram of atmospheric control of the invention in the initial state；
Fig. 5 is the working principle diagram when foot valve of atmospheric control of the invention is depressed or steps on movement；
Fig. 6 is the working principle diagram when foot valve of atmospheric control of the invention is persistently stepped on movement；
Fig. 7 is that the foot valve of atmospheric control of the invention is released or working principle diagram when lift action；
Fig. 8 be the foot valve of atmospheric control of the invention by sustained release or lift action when working principle diagram；
Fig. 9 is the working principle diagram when foot valve of atmospheric control of the invention is operated again or pressure acts；
Figure 10 is that the work when foot valve of atmospheric control of the invention is persistently stepped on again or pressure acts is former
Reason figure；
Figure 11 is that the foot valve of atmospheric control of the invention is released or working principle diagram when lift action again；
Figure 12 be atmospheric control of the invention foot valve again by sustained release or lift action when work it is former
Reason figure.
In figure：
1, foot valve；2, the first two-position five-way valve；3, the first dual-pressure valve；4, the second dual-pressure valve；5, the second two-position five-way valve；
6, shuttle valve；7, cylinder, 8, oil mist separator；9, exhaust shutter；10, gas main；101, first branch's tracheae；102, second point
Bronchus；11, roller pipeline；111, roller；12, rack.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, providing a kind of atmospheric control in the present embodiment, including foot valve 1, the first two-position five-way valve
2, the first dual-pressure valve 3, the second dual-pressure valve 4,5, shuttle valves 6 of the second two-position five-way valve and cylinder 7, wherein cylinder 7 is stop
The air pressure of cylinder, external air source is 0.4-0.6Mpa, and the first two-position five-way valve 2 and the second two-position five-way valve 5 are Pneumatic valve, foot
Stepping on valve 1 is two-position five-way foot valve.Wherein, double air controlled valve has " memory " function, can keep not in current location after dying
Become.Two dual-pressure valves are equivalent to logic control "AND", and only there are two air inlets to have gas outlet eloquence to have gas to go out simultaneously.6 phase of shuttle valve
When in logical "or", as long as any of two air inlets have gas, gas outlet outlet.
In Fig. 1, shuttle valve 6, the air inlet of the first dual-pressure valve 3 and the second dual-pressure valve 4, gas outlet indicate that 0 indicates no gas,
Indicating 1 indicates that gas, lines indicate tracheae, and the selection between tracheae and tracheae is connected using connector, not the cross spider line of connector
Road does not connect.
In addition, above-mentioned qigong control system further includes oil mist separator 8, gas is separated after oil mist separator 8 through mist of oil
The outlet of device 8 connects quick-release connector after gas main 10, and gas connects foot-operated after quick-release connector through first branch's tracheae 101
The P mouth and second branch's tracheae 102 of valve 1 connect the P mouth of the second two-position five-way valve 5；
The A mouth of foot valve 1 is connected to the P mouth and left end control mouth of the first two-position five-way valve 2 with B mouthfuls；
The right end control mouth of first two-position five-way valve 2 is connected to the gas outlet of shuttle valve 6, the B mouth quilt of the first two-position five-way valve 2
Plug blocks；
The right end air inlet of the left end air inlet of first dual-pressure valve 3 and the second dual-pressure valve 4 is all connected to the first two-position five-way
The A mouth of valve 2, the right end air inlet of the first dual-pressure valve 3 are connected to the B mouth of the second two-position five-way valve 5, the left end of the second dual-pressure valve 4
The A mouth of air inlet and the second two-position five-way valve 5 is all connected to the rod chamber of cylinder 7；
The gas outlet of first dual-pressure valve 3 is connected to the left end control mouth of the second two-position five-way valve 5 and the left end of shuttle valve 6 simultaneously
Air inlet；The gas outlet of second dual-pressure valve 4 is connected to the right end control mouth of the second two-position five-way valve 5 and the right end of shuttle valve 6 simultaneously
Air inlet, the branch road of the connection of the first dual-pressure valve 3 and the second two-position five-way valve 5, and in the second dual-pressure valve 4 and the two or two
The branch road of the connection of five-way valve 5 is provided with one-way throttle valve, passes through the first dual-pressure valve 3 and the second dual-pressure valve 4 control second
The spool of two-position five-way valve 5 acts；
In addition, the R mouth of the first two-position five-way valve 2 and the second two-position five-way valve 5 and S mouthfuls are respectively connected with band in the present embodiment
The exhaust shutter 9 of silencer.Further, it is also possible in one of them R of the first two-position five-way valve 2 and the second two-position five-way valve 5
Mouth and S mouthfuls of installation exhaust shutters 9, can also not install.Exhaust shutter 9 with silencer is set first is that pressing at first pair
When valve 3 and the second dual-pressure valve 4 are not symmetrically installed, it can guarantee the first two-position five-way valve 2 and the two or two by exhaust shutter 9
It does not die before 5 execution of five-way valve, the aperture by adjusting throttle valve guarantees the first two-position five-way valve 2 and the second two-position five-way
The movement of valve 5 synchronizes；Second is that noise reduction can be played the role of, reduce above-mentioned first two-position five-way valve 2 and 5 row of the second two-position five-way valve
Noise when gas, when especially variety classes control valve is more；Three can be prevented from the fine particles such as dust in environment
Into the first two-position five-way valve 2 and the second two-position five-way valve 5, it is likely to result in valve core movement in this way and is obstructed, to reduce by two
The service life of valve.
It, will be about first when the first dual-pressure valve 3 and the second dual-pressure valve 4 are installed when neither installing exhaust shutter 9
Two-position five-way valve 2 is full symmetric, guarantees the air inlet synchronism at the both ends of the first two-position five-way valve 2, wherein also to guarantee to die
Afterwards, the first two-position five-way valve 2 and the second two-position five-way valve 5 are in horizontality.
A kind of material conveyor, including above-mentioned atmospheric control are additionally provided in the present embodiment, specifically, such as Fig. 2
With shown in Fig. 3, above-mentioned material conveyor includes roller pipeline 11 and rack 12, and roller pipeline 11 is set to rack 12
On, roller pipeline 11 includes the roller 111 that two groups of interval pre-determined distances are set side by side in same level, above-mentioned cylinder
7 are arranged between two groups of rollers 111, by the stretching or retraction of cylinder 7, to whether control cylinder 7 transporting on roller 111
Material jack up.
A kind of control method to above-mentioned atmospheric control, including the second two-position five-way valve are additionally provided in the present embodiment
The on-off of 5 action control external air sources and cylinder 7；It is acted by foot valve 1 or shuttle valve 6 controls the movement of the first two-position five-way valve 2；
Going out for the first dual-pressure valve 3 and the second dual-pressure valve 4 is controlled by foot valve 1, the first two-position five-way valve 2 and the second two-position five-way valve 5
Whether port has gas, and the first dual-pressure valve 3 and the second dual-pressure valve 4 control the movement of the second two-position five-way valve 5, while controlling shuttle valve 6
Whether gas outlet has gas.
Second two-position five-way valve, 5 action control external air source and the on-off of cylinder 7 include：As the P of the second two-position five-way valve 5
Mouth is connected to B mouthfuls, then cylinder 7 keeps previous action state；The P mouth of second two-position five-way valve 5 is connected to A mouthfuls, then cylinder 7 is dynamic
Make.When external air source is died, the first dual-pressure valve 3, the second dual-pressure valve 4, the first two-position five-way valve 2, the second two-position five-way valve 5,
Shuttle valve 6 and foot valve 1 are kept the current status unchanged.
Specifically, controlling the movement of the first two-position five-way valve 2 by foot valve 1 or shuttle valve 6 includes：If 1P mouthfuls of foot valve and A
Mouth connection, the P mouth of the first two-position five-way valve 2 are connected to A mouthfuls, then control the movement of the first two-position five-way valve 2 by shuttle valve 6, simultaneously
The movement of the second two-position five-way valve 5 is controlled by the first dual-pressure valve 3 or the second dual-pressure valve 4；If 1P mouthfuls of foot valve are connected to B mouthfuls, the
The P mouth of one two-position five-way valve 2 is connected to B mouthfuls, then the movement of the first two-position five-way valve 2 is controlled by foot valve 1.
Further specifically, if 1P mouthfuls of foot valve are connected to A mouthfuls, the P mouth of the first two-position five-way valve 2 is connected to A mouthfuls, is passed through
Shuttle valve 6 controls the movement of the first two-position five-way valve 2：It is connected to if the current state of the second two-position five-way valve 5 is P mouthfuls with A mouthfuls,
There is gas in second dual-pressure valve 4 control, 6 gas outlet of shuttle valve, and shuttle valve 6 controls the movement of the first two-position five-way valve 2；If the second two-position five-way valve 5
Current state be P mouthful and be connected to B mouthfuls that then the first dual-pressure valve 3, which controls 6 gas outlet of shuttle valve, gas, the control of shuttle valve 6 the one or two five
Port valve 2 acts.
Further specifically, if 1P mouthfuls of foot valve are connected to A mouthfuls, the P mouth of the first two-position five-way valve 5 is connected to A mouthfuls, is passed through
The spool that first dual-pressure valve 3 or the second dual-pressure valve 4 control the second two-position five-way valve 5, which acts, includes：
It is connected to if the current state of the first two-position five-way valve 2 is P mouthfuls with A mouthfuls, passes through the second dual-pressure valve 4 control the two or two
Position five-way valve 5 acts；If the P current state of the first two-position five-way valve 2 is that mouth is connected to A mouthfuls, controlled by the first dual-pressure valve 3
The movement of second two-position five-way valve 5.
Specifically, as shown in Fig. 4-Figure 12, atmospheric control in the present embodiment, for different original state and foot
The movement of valve 1 is stepped on, nine kinds of working conditions or not are presented in the atmospheric control in the present embodiment.
The movement of foot valve 1 is divided into initial free state, the process that foot valve 1 is continuously pressed down or steps on, 1 quilt of foot valve
It floors the state remained stationary, people's foot lifts the process that foot valve 1 lifts, and with this process perseveration, by trampling one
Secondary foot valve 1, cylinder 7 act once, trample foot valve 1 twice, then above-mentioned atmospheric control is restored to original state.
(1) as shown in figure 4, at this point, 1 attonity of foot valve, the P mouth of the second two-position five-way valve 5 are connected to itself A mouthfuls, and
It is connected to the rod chamber of cylinder 7, meanwhile, by the gas connection in second branch's tracheae 102 in the P of the second two-position five-way valve 5
Mouthful, therefore, cylinder 7 is in compressive state at this time, using the state at this time of cylinder 7 as original state in the present embodiment.
Meanwhile under current state, without gas in the first dual-pressure valve 3 and shuttle valve 6.Because gas is through oil mist separator 8, total gas
After pipe 10 and second branch's tracheae 102, it is connected to 4 left end air inlet of the second dual-pressure valve, so the second dual-pressure valve 4 connects a left side at this time
End air inlet has gas, such as the one state marked in Fig. 4.
The spool of foot valve 1 is in right position state, and the spool of the first two-position five-way valve 2 and the second two-position five-way valve 5 is in
Left position state.At this point, the P mouth of foot valve 1 is connected to itself B mouthfuls, the A mouth of foot valve 1 is connected to R mouthfuls, the B mouth through foot valve 1
It is connected to the left end control mouth of the first two-position five-way valve 2, the A mouth of foot valve 1 is connected to the P mouth of the first two-position five-way valve 2.
(2) as shown in figure 5, when foot valve 1 is depressed or steps on movement, the spool of foot valve 1 is moved to right, at this time at spool
In left position, at this point, therefore, cylinder 7 is still within retraction shape because the state of the second two-position five-way valve 5 in (1) step is identical
State, at this point, leading to the hysteresis quality of each valve events, at this point, each valve is not because external air source is to intratracheally the reaction time is being needed
Movement.Therefore, gas of the external air source after second branch's tracheae 102 still is able to provide gas source for the rodless cavity of cylinder 7, makes
Cylinder 7 keeps retracted mode.
The state of foot valve 1 is：The P mouth of foot valve 1 is connected to the A mouth of itself, the B mouth company of the S mouth of foot valve 1 and itself
Logical, the A mouth through foot valve 1 is connected to the P mouth of the first two-position five-way valve 2, the B mouth through foot valve 1 and the first two-position five-way valve 2
The connection of left end control mouth；Other each valves are kept the current status unchanged.
Because of the snap action stepped in foot valve 1, the gas in the first dual-pressure valve 3, the second dual-pressure valve 4 and shuttle valve 6 is gone back
That in place, therefore, the first two-position five-way valve 2 and the second two-position five-way valve 5 are not temporarily failure to actuate.
(3) persistently continue to step on as shown in fig. 6, working as foot valve 1, at this time certain a period of time of cylinder 7 during persistently stepping on
Quarter movement, cylinder 7 reset under the action of itself spring, become stretching state from retracted mode, the spool of foot valve 1 is kept
It is constant to state position in step 2.
Specifically, the reason of being acted because of the spool of foot valve 1 in above-mentioned step 2, the P mouth of foot valve 1 and itself A mouthfuls of company
Logical, S mouthfuls are connected to the B mouth of itself.
When foot valve 1 is persistently stepped on, gas reaction for a period of time, the first dual-pressure valve 3, the second dual-pressure valve 4 and shuttle valve 6
In gas in place.As shown in Figure 5, the gas after oil mist separator 8 is through gas main 10, first branch's tracheae 101, foot-operated
The P mouth of valve 1, the P mouth of A mouthfuls and the first two-position five-way valve 2, after A mouthfuls, the right end air inlet of the second dual-pressure valve 4 and first pair of pressure
The left end air inlet of valve 3 has gas, i.e., the mark one state in figure；Meanwhile under above-mentioned original state, the connection of the second dual-pressure valve 4
Left end air inlet has gas, is one state, and comprehensive both the above factor, there are gas discharge, i.e. Fig. 5 in the gas outlet of the second dual-pressure valve 4
In the second dual-pressure valve 4 gas outlet be one state.
In foot valve 1 during persistently stepping on, the gas of the second dual-pressure valve 4 in place, the gas push of gas outlet
The spool of second two-position five-way valve 5 moves to left, i.e., spool is in right position state, and state is become the shape in Fig. 6 from state in Fig. 5 at this time
State.
In Fig. 5, and because the right end air inlet of shuttle valve 6 is connected to the gas outlet of the second dual-pressure valve 4, the right side of shuttle valve 6 at this time
There is gas at end, and for the one state marked in Fig. 5, it is also one state that, which there is gas in the gas outlet of shuttle valve 6, and shuttle valve 6 pushes the one or two five
The spool of port valve 2 moves to left, i.e., spool is in right position state.
The state of the first dual-pressure valve 3 is that its right end air inlet has gas, the i.e. one state marked in Fig. 5 at this time.
After the movement of the spool of first two-position five-way valve 2 and the second two-position five-way valve 5, the state of the two is as shown in Figure 6.
At this point, B mouthfuls are blocked by plug, and gas source is through first as shown in fig. 6, the P mouth of the first two-position five-way valve 2 is connect with B mouthfuls
Branch's tracheae 101 is connected to the P of foot valve 1 mouth, because the P mouth of foot valve 1 at this time is connected to A mouthfuls, the A mouth and first of foot valve 1
The P mouth of two-position five-way valve 2 connects.
The A mouth of first two-position five-way valve 2 is connect with itself R mouthfuls, the exhaust throttle of R mouthfuls and itself S mouthfuls of connecting band silencer
Valve 9.
The P mouth of second two-position five-way valve 5 is connected to the B mouth of itself, and A mouthfuls are connected to itself R mouthfuls, wherein R mouthfuls and S mouthfuls of companies
The exhaust shutter 9 of tape splicing silencer.
It is connected to for P mouthfuls when being in right position because of second branch's tracheae 102 with the second two-position five-way valve 5 again, the second two-position five-way
The P mouth of valve 5 is connected to B mouthfuls, and the B mouth of the second two-position five-way valve 5 is connected to the right end air inlet of the first dual-pressure valve 3, at this point, first
The right end air inlet of dual-pressure valve 3 has gas, is one state；
The left end air inlet and air outlet of first dual-pressure valve 3 and all air inlet and air outlet of the second dual-pressure valve 4 are equal
It is " 0 " state without gas.
The A mouth of second two-position five-way valve 5 is connected to the rod chamber of cylinder 7, and the A mouth of the second two-position five-way valve 5 is also with second
The R mouth of two-position five-way valve 5 is connected to, and therefore, the gas in cylinder 7 can be discharged for exhaust shutter 9, makes cylinder 7 in the bullet of spring
The lower movement of power effect is stretching state.
(4) as shown in fig. 7, when foot valve 1 is released or lifts, the spool of foot valve 1 is moved to left, i.e., spool is in right position,
At this point, the R mouth of foot valve 1 is connected to the A mouth of itself, P mouthfuls are connected to the B mouth of itself, still because of the movement hysteresis quality of each valve,
Each valve temporarily remains stationary, and because cylinder 7 is connected through the A mouth of second five valves 5 of two-way, A mouthfuls are connected to R mouthfuls again, and R mouthfuls are connected to
Exhaust shutter 9 with silencer, therefore, cylinder 7 still maintains the state of step 3, is in stretching state.
At this point, the first dual-pressure valve 3, the second dual-pressure valve 4 and shuttle valve 6 each air inlet and air outlet state still with the 3rd
State is identical in step.
(5) as shown in figure 8, foot valve 1 is by sustained release or during lifting, because identical as the reason in step 4, gas
Cylinder 7 still maintains motionless, and action process is as follows,
The spool of foot valve 1 is in right position in step 4, and external air source is connected to first after the P of foot valve 1 mouth, B mouthfuls
The left end control mouth of two-position five-way valve 2, meanwhile, the right end air inlet and shuttle valve of the first two-position five-way valve 2 are had been described above in step 4
6 gas outlet connection, therefore, the right end of the first two-position five-way valve 2 is without gas.At this point, the spool of the first two-position five-way valve 2 is by left end
The effect of gas is controlled, spool moves to right, and spool is in left position at this time.
Because the state of each air inlet and air outlet of the first dual-pressure valve 3 and the second dual-pressure valve 4 is still identical in step 4,
Therefore, the spool of the first two-position five-way valve 2 is failure to actuate, and therefore, remaining on no gas source is that cylinder 7 provides power power, cylinder 7
Still maintain stretching state.
The state of first dual-pressure valve 3 and step 3 are identical with the state of step 4, and right end air inlet has gas, are one state.
(6) as shown in figure 9, the pressure of foot valve 1 or stepping on, foot valve 1 is acted, because of the response lag of each valve, first
Two-position five-way valve 2 and the first two-position five-way valve 5 are also not operating, and the state of the first two-position five-way valve 2 and the second two-position five-way valve 5 is
The continuity of the preceding state of laststate is not free state.Action process is as follows：
When foot valve 1 is stepped on again, cylinder 7 still maintains the stretching state in 3-5, the original that cylinder 7 is failure to actuate
Because identical as the reason in above-mentioned step 5.
The spool of foot valve 1 moves to right, i.e., spool is in left position state, at this point, the A mouth company of the P mouth of foot valve 1 and itself
Logical, S mouthfuls are connected to the B mouth of itself.
(7) as shown in Figure 10, when foot valve 1 is persistently stepped on, cylinder 7 is acted, and becomes retracted mode from stretching state,
Action process is as follows,
The reason of because of the movement of above-mentioned step 6 foot valve 1, a certain moment during persistently being stepped on again, gas
It is conveyed in place intratracheal, at this point, cylinder 7 acts；
Specifically, as shown in figure 9, through the filtered gas of oil mist separator 8, through gas main 10, first branch's tracheae
101, the P mouth of foot valve 1, after A mouthfuls, then the P mouth through the first two-position five-way valve 2 and A mouthfuls, the left end air inlet to the first dual-pressure valve 3
The right end air inlet gas supply of mouth, the second dual-pressure valve 4, at this point, the state of the two is to have gas, as one state, synthesis are above-mentioned
In step 5, the right end air inlet of the first dual-pressure valve 3 has gas, is one state, therefore, there is gas in the gas outlet of the first dual-pressure valve 3, is
One state.Therefore, the spool of the second two-position five-way valve 5 moves to right, i.e., spool is in left position state, at this time from Fig. 9 state become as
State shown in Fig. 10.
In Fig. 9, because the gas outlet of the first dual-pressure valve 3 is connected to 6 left end air inlet of shuttle valve, therefore, the left end of shuttle valve 6 into
There are gas in port and gas outlet, are one state.Therefore, the right end control mouth of the first two-position five-way valve 2 has gas, and the two or two five
The spool of port valve 5 moves to left, i.e., spool is in right position state, as shown in Figure 10.
As shown in Figure 10, the connection status and step 1 of the second two-position five-way valve 5 and the first dual-pressure valve 3, the second dual-pressure valve 4
In it is identical；First two-position five-way valve 2 is identical as in the connection status and step 3 of foot valve 1.
Second dual-pressure valve, 4 current state is that left end control mouth has gas, is one state.
(8) as shown in figure 11, foot valve 1 is lifted or release movement again, because there is lasting external gas in above-mentioned step 7
Source provides power for the rod chamber of cylinder 7, and therefore, cylinder 7 keeps retracted mode constant, meanwhile, the first two-position five-way valve 2 and the
Two two-position five-way valves 5 are temporarily remained stationary because acting hysteresis quality.
Foot valve 1 acts, and spool moves to left, and spool is in right position state, at this point, foot valve 1 and the first two-position five-way valve 2
Connection relationship is identical with step 4, the connection relationship of the second two-position five-way valve 5 and the first dual-pressure valve 3 and the second dual-pressure valve 4 and the
It is identical in 7 steps.
(9) as shown in figure 12, when foot valve 1 is persistently lifted again or release movement, because with the movement phase in step 8
Together, therefore, cylinder 7 maintains retracted mode constant, and action process is as follows：
Because the connection relationship of above-mentioned second two-position five-way valve 5 and the first dual-pressure valve 3 and the second dual-pressure valve 4 is identical as step 7,
Therefore, the second two-position five-way valve 5 is failure to actuate, then cylinder 7 in this step is failure to actuate；
Foot valve 1 and the connection relationship of the first two-position five-way valve 2 are identical with step 4, therefore, the first foot valve 1 and
Identical left end control mouth has gas in the connection relationship and step 4 of one two-position five-way valve 2, is one state, therefore, the two or two
5 spool of five-way valve moves to right, and is in left position state.The working condition of the control system in step 1 is then returned to.
Above-mentioned atmospheric control is converted under nine kinds of working conditions, forms the good control to cylinder 7.Pass through above-mentioned gas
Autocontrol system, can guarantor trample foot valve 1 it is motionless when, cylinder 7 is not in even to call a taxi phenomenon.It is by above-mentioned control
System, can allow above-mentioned cylinder 7 during trample action twice, be resetted, according to the needs of staff, trample foot
Valve 1 is stepped on, so that it is determined that the position of cylinder 7.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of atmospheric control, which is characterized in that including foot valve (1), the first two-position five-way valve (2), the first dual-pressure valve
(3), the second dual-pressure valve (4), the second two-position five-way valve (5), shuttle valve (6) and cylinder (7)；
External air source is connected to the P mouth of the foot valve (1) and the P mouth of second two-position five-way valve (5), the foot valve
(1) A mouth is connected to the control mouth of the P mouth and one end of first two-position five-way valve (2) with B mouthfuls；
The air inlet of described first dual-pressure valve (3) one end and the air inlet of the second dual-pressure valve (4) one end are all connected to described first
The A mouth of two-position five-way valve (2)；
The gas outlet of first dual-pressure valve (3) be connected to described second two-position five-way valve (5) one end control mouth and the shuttle
One air inlet of valve (6), the gas outlet of second dual-pressure valve (4) are connected to the second two-position five-way valve (5) other end
Another air inlet of control mouth and the shuttle valve (6)；
The gas outlet of the shuttle valve (6) is connected to the control mouth of the first two-position five-way valve (2) other end；
The A mouth of second two-position five-way valve (5) and the second dual-pressure valve (4) other end air inlet are all connected to the cylinder
(7)。
2. atmospheric control according to claim 1, which is characterized in that further include oil mist separator (8), the mist of oil
Separator (8) is connected to the P mouth of the foot valve (1) and the P mouth of second two-position five-way valve (5).
3. atmospheric control according to claim 1, which is characterized in that the R mouth of first two-position five-way valve (2)
And/or S mouthfuls be connected with exhaust shutter (9)；And/or
The R mouth of second two-position five-way valve (5) and/or S mouthfuls are connected with exhaust shutter (9).
4. atmospheric control according to claim 1, which is characterized in that first dual-pressure valve (3) and second pair of pressure
The position of valve (4) is symmetrically installed about second two-position five-way valve (5).
5. a kind of control method of atmospheric control, which is characterized in that including：
The on-off of second two-position five-way valve (5) action control external air source and cylinder (7)；
Pass through foot valve (1) or shuttle valve (6) control the first two-position five-way valve (2) movement；
The first dual-pressure valve (3) and second are controlled by foot valve (1), the first two-position five-way valve (2) and the second two-position five-way valve (5)
The gas outlet of dual-pressure valve (4) opens or closes, the first dual-pressure valve (3) and the second dual-pressure valve (4) control the second two-position five-way valve (5)
Movement, while the gas outlet for controlling shuttle valve (6) opens or closes.
6. control method according to claim 5, which is characterized in that gas outside the second two-position five-way valve (5) action control
The on-off in source and cylinder (7) includes：
When the P mouth of the second two-position five-way valve (5) is connected to B mouthfuls, then cylinder (7) keeps previous action state；Second two-position five-way
The P mouth of valve (5) is connected to A mouthfuls, then cylinder (7) acts.
7. control method according to claim 5, which is characterized in that when external air source is died, the first dual-pressure valve (3),
Second dual-pressure valve (4), the first two-position five-way valve (2), the second two-position five-way valve (5), shuttle valve (6) and foot valve (1) keep working as
Preceding state is constant.
8. control method according to claim 5, which is characterized in that pass through foot valve (1) or shuttle valve (6) control the one or two
Position five-way valve (2) acts：
If P mouthfuls of foot valve (1) is connected to A mouthfuls, the P mouth of the first two-position five-way valve (2) is connected to A mouthfuls, then is controlled by shuttle valve (6)
First two-position five-way valve (2) movement, while the second two-position five-way valve is controlled by the first dual-pressure valve (3) or the second dual-pressure valve (4)
(5) it acts；
If P mouthfuls of foot valve (1) is connected to B mouthfuls, the P mouth of the first two-position five-way valve (2) is connected to B mouthfuls, then is controlled by foot valve (1)
Make the movement of the first two-position five-way valve (2).
9. control method according to claim 8, which is characterized in that if P mouthfuls of foot valve (1) is connected to A mouthfuls, the one or two
The P mouth of five-way valve (2) is connected to A mouthfuls, includes by shuttle valve (6) control the first two-position five-way valve (2) movement：
It is connected to if the current state of the second two-position five-way valve (5) is P mouthfuls with A mouthfuls, the second dual-pressure valve (4) controls shuttle valve (6) and goes out
Port has gas, and shuttle valve (6) controls the first two-position five-way valve (2) movement；
It is connected to if the current state of the second two-position five-way valve (5) is P mouthfuls with B mouthfuls, the first dual-pressure valve (3) controls shuttle valve (6) and goes out
Port has gas, and shuttle valve (6) controls the first two-position five-way valve (2) movement.
10. control method according to claim 8, which is characterized in that if P mouthfuls of foot valve (1) is connected to A mouthfuls, the one or two
The P mouth of position five-way valve (5) is connected to A mouthfuls, controls the second two-position five-way valve by the first dual-pressure valve (3) or the second dual-pressure valve (4)
(5) spool acts：
It is connected to if the current state of the first two-position five-way valve (2) is P mouthfuls with A mouthfuls, passes through the second dual-pressure valve (4) control the two or two
Position five-way valve (5) acts；
If the P current state of the first two-position five-way valve (2) is that mouth is connected to A mouthfuls, pass through the first dual-pressure valve (3) control the two or two
Position five-way valve (5) acts.
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