CN103922233B - Valve group and hydraulic means - Google Patents
Valve group and hydraulic means Download PDFInfo
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- CN103922233B CN103922233B CN201410160034.7A CN201410160034A CN103922233B CN 103922233 B CN103922233 B CN 103922233B CN 201410160034 A CN201410160034 A CN 201410160034A CN 103922233 B CN103922233 B CN 103922233B
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Abstract
The invention discloses a kind of valve group and hydraulic means, relate to engineering machinery field, be possible not only to solve locking oil cylinder and unlock and unreliable the problem of nodding occurs, also can solve full car when having a power failure suddenly, the locking oil cylinder of super lifting device cannot the problem of stuck ratchet, the effect saving the energy can be played the most again.This valve group includes: the lock piece being arranged in parallel and the first reversal valve；Lock piece is at least for controlling the one-way flow direction of fluid in self place oil branch road, and the first reversal valve is for two-way admittance self place oil branch road under powering-off state.Technique scheme can full car burst have a power failure time timely stuck ratchet.
Description
Technical field
The present invention relates to engineering machinery field, be specifically related to a kind of valve group and hydraulic means.
Background technology
Along with the elevating capacity of modern crane is increasing, its brachium is more and more longer, lifting
The integral rigidity of arm declines the most therewith.When carrying out long brachium lift heavy, the lower amount of deflection meeting of crane arm
Very big, its elevating capacity declines the most therewith.Seeing Fig. 1, crane arm includes minor details arm arm head
20, principal arm 21 and basic arm arm tail 22.In order to upgrade the rigidity of weighing arm, reduce its downwarp
Degree, can install super lifting device on crane arm additional, and steel wire rope 10 is carried out pre-by super lifting device elevator
Tensioning, then with locking oil cylinder 14 by elevator locking.Can take off to realize locking oil cylinder 14
Oil cylinder 15 and spring 16 is controlled from the ratchet 23 on stuck setting-up elevator 11, usually installation
Realize the motion of locking oil cylinder 14.When control oil cylinder 15 stretches out, overcome spring force, locking oil
Cylinder 14 swings around hinge and departs from setting-up elevator 11, and now elevator can move, it is achieved steel wire rope
The folding and unfolding of 10.The state of setting-up elevator 11 is now departed from for making locking oil cylinder 14 be in all the time,
Time actually used, control oil cylinder 15 big chamber, i.e. rodless cavity to be made are filled with hydraulic oil all the time, are used for
Overcome spring force.When controlling oil cylinder 15 and retracting, locking oil cylinder 14 is under spring force
Snapping in setting-up elevator 11, elevator cannot move.Specifically, see Fig. 1, super lifting device fills
Having steel wire rope 10, one end of steel wire rope 10 to be fixed on minor details arm head portion, the other end is connected to surpass
On the setting-up elevator 11 of cantilever lifting 13 end.Seeing Fig. 2 and Fig. 3, super lifting device includes setting-up
Elevator 11, locking oil cylinder 14 and control oil cylinder 15.Setting-up elevator 11 is driven by motor and realizes
The folding and unfolding of steel wire rope 10；Locking oil cylinder 14 realizes tensioning and the locking setting-up elevator of steel wire rope 10
11；Control oil cylinder 15 and realize rising and falling of locking oil cylinder 14, thus setting-up elevator 11 is realized lock
Stop and decontrol.
Need during hoisting operation first to use setting-up elevator 11 by pre-tensioner for steel wire rope 10, use the most again
Steel wire rope 10 is tensioned to regulation pulling force by locking oil cylinder 14, and by setting-up elevator 11 locking.Want
Realize the motion of steel wire rope 10, it is necessary to unlocked by locking oil cylinder 14, oil cylinder 15 will be controlled
Stretch out, locking oil cylinder 14 is lifted, it is achieved the motion of setting-up elevator 11.
Super lifting device: principal arm amount of deflection when Telescopic crane is in order to reduce lift heavy, by leading
Install setting-up arm 13, setting-up elevator 11, steel wire rope 10 and pull bar 12 on arm additional, make them with main
Arm constitutes stable three-legged structure, thus increases the rigidity of principal arm, improves lift heavy performance.Mainly
The device being made up of setting-up arm 13, setting-up elevator 11, steel wire rope 10 and pull bar 12 is referred to as setting-up
Device.Wherein, kicking up of setting-up arm 13 can make pull bar 12 strain, the rope closing of setting-up elevator 11
Steel wire rope 10 can be made to tighten up.Owing to there being steel wire rope 10 to make minor details arm relative to base with the existence of elevator
The motion of this arm is unrestricted
Prior art use following two ways control the flexible of oil cylinder 15.See Fig. 3,
Mode one is: control oil cylinder 15 by the solenoid directional control valve 18 of position Y function in
Flexible, when magnetic valve is at 1, P mouth pressure oil arrives the rodless cavity controlling oil cylinder 15, control
Liquefaction cylinder 15 stretches out, and locking oil cylinder 14 lifts.When magnetic valve is at 2, P mouth pressure oil
Arriving the rod chamber controlling oil cylinder 15, control oil cylinder 15 and retract, locking oil cylinder 14 falls.
Inventor finds, aforesaid way at least exists following problems: occur at setting-up system pressure
In the case of fluctuation, control oil cylinder 15 meeting automatic retracted under spring force.Operationally
Controlling oil cylinder 15 need to overcome its big chamber of spring force must remain high pressure, makes control oil cylinder 15 big
Chamber remains hydraulic oil for overcoming spring force, and so the purpose of design is to take into full account security,
If emergency situations such as such as engine flame-out or full car power failures without reason, controlling the big chamber of oil cylinder 15 will
Decompression, locking oil cylinder 14 snaps in setting-up elevator 11 under spring force, makes machine be in
Safe condition.But so there is also drawback: the first, the waste energy, if made of constant displacement pump
Certain spillway discharge and amount of leakage must be sacrificed, if with constant pressure pump as hydraulic pressure for hydraulic oil source
Oil sources, it is necessary to sacrifice certain amount of leakage, causes certain energy loss；Second and its also
The pressure change of connection oil circuit, the pressure that can affect control oil cylinder 15 big chamber, i.e. rodless cavity has ripple
Dynamic, occur controlling oil cylinder 15 striction phenomenon back and forth, cause locking oil cylinder 14 to do nodding action,
With the hoisting ratchet tooth rotated, collision phenomenon occurs, device damage can be caused.
Seeing Fig. 4, mode two is by the solenoid directional control valve 18 of position Y function in and hydraulic control
Check valve 19 controls the flexible of oil cylinder 15 in the lump, when solenoid directional control valve 18 is at 1,
P mouth pressure oil arrives the rodless cavity controlling oil cylinder 15 by pilot operated valve device, controls oil cylinder 15 and stretches out.
Locking oil cylinder 14 lifts rear solenoid directional control valve 18 and recovers to middle position, and the oil in big chamber is by pilot operated valve device
Seal up.When magnetic valve is at 2, P mouth pressure oil arrives the rod chamber controlling oil cylinder 15,
Opening big chamber side hydraulic control individual event valve simultaneously, control the big chamber oil return of oil cylinder 15, oil cylinder is retracted, locking
Oil cylinder 14 falls.
Inventor finds, aforesaid way at least exists following problems: when engine is flame-out suddenly or
When the emergency case such as full car power failure occur, locked by hydraulic control owing to controlling the hydraulic oil in the big chamber of oil cylinder 15
Seal up and can not bounce back, locking oil cylinder 14 cannot stuck ratchet 23, setting-up elevator 11 can at steel
Cord 10 Action of Gravity Field backspin then occur that out-of-control phenomenon causes security incident.
Summary of the invention
One of them purpose of the present invention is to propose a kind of valve group and hydraulic means, not only acts as
Save the effect of the energy, it is to avoid the locking oil cylinder of super lifting device does nodding action, prevent locking oil
Cylinder and hoisting ratchet collision；The more important thing is to solve in prior art and rotated at setting-up elevator
When in journey, full car has a power failure suddenly, locking oil cylinder cannot the problem of stuck ratchet.
Many technique effects that optimal technical scheme of the present invention can be generated by will describe in detail later.
For achieving the above object, the invention provides techniques below scheme:
The invention provides a kind of valve group, comprising: the lock piece being arranged in parallel and the first commutation
Valve；
Described lock piece is at least for controlling the one-way flow side of fluid in self place oil branch road
To, described first reversal valve is for two-way admittance self place oil branch road under powering-off state.
In optional or preferred embodiment, described first reversal valve is solenoid directional control valve；
When described first reversal valve is in obtain electricity condition, the oily branch road at described first reversal valve place
Cut-off；When described first reversal valve is in power failure state, and the oil at described first reversal valve place props up
Road two-way admittance.
In optional or preferred embodiment, described first reversal valve is two-bit triplet electromagnetic switch
Valve；
Described first reversal valve has the first hydraulic fluid port, the second hydraulic fluid port and the 3rd hydraulic fluid port, and described first
First hydraulic fluid port of reversal valve is used for connecting with the first hydraulic fluid port of first component, described first reversal valve
The second hydraulic fluid port for connecting with the first hydraulic fluid port of second component, the 3rd of described first reversal valve
Hydraulic fluid port ends；
When described first reversal valve is in obtain electricity condition, the first hydraulic fluid port of described first reversal valve and
3rd hydraulic fluid port connection of described first reversal valve, the oily branch road cut-off at described first reversal valve place；
When described first reversal valve is in power failure state, the first hydraulic fluid port of described first reversal valve and
Second hydraulic fluid port connection of described first reversal valve, the oily branch road at described first reversal valve place is two-way
Conducting.
In optional or preferred embodiment, described lock piece is common check valve, described commonly
The oil-in of check valve is for connecting with the first hydraulic fluid port of described first component, described the most unidirectional
The oil-out of valve is for connecting with the first hydraulic fluid port of second component.
In optional or preferred embodiment, described lock piece is hydraulic control one-way valve, described hydraulic control
First hydraulic fluid port of check valve is used for connecting with the first hydraulic fluid port of described first component, described hydraulic control list
To the second hydraulic fluid port of valve for connecting with the first hydraulic fluid port of second component, described hydraulic control one-way valve
Control port is for connecting with the second hydraulic fluid port of described first component.
In optional or preferred embodiment, described lock piece is balanced valve, described balanced valve
First hydraulic fluid port is for connecting with the first hydraulic fluid port of described first component, and the second of described balanced valve is oily
Mouth is for connecting with the first hydraulic fluid port of described second component, and the control port of described balanced valve is used for
Connect with the second hydraulic fluid port of described first component.
In optional or preferred embodiment, described lock piece is hydraulic two-way lock,
First hydraulic fluid port of described hydraulic two-way lock is for the first hydraulic fluid port with described first component even
Logical, the second hydraulic fluid port of described hydraulic two-way lock is used for connecting with the first hydraulic fluid port of second component, institute
The first control port stating hydraulic two-way lock connects for the second hydraulic fluid port with described first component；
3rd hydraulic fluid port of described hydraulic two-way lock is for the second hydraulic fluid port with described first component even
Logical, the 4th hydraulic fluid port of described hydraulic two-way lock is used for connecting with the second hydraulic fluid port of second component, institute
The second control port stating hydraulic two-way lock connects for the first hydraulic fluid port with described first component.
In optional or preferred embodiment,
Described first component is the second reversal valve；
Described second component is for controlling oil cylinder, and the first hydraulic fluid port of described control oil cylinder is rodless cavity oil
Mouthful, the second hydraulic fluid port of described control oil cylinder is rod chamber hydraulic fluid port.
In optional or preferred embodiment, described second reversal valve is Y type 3-position 4-way electromagnetism
Reversal valve.
The present invention also provides for a kind of hydraulic means, and it includes controlling oil cylinder, the second reversal valve and basis
Invent the valve group that arbitrary technical scheme is provided；
The oil-in of described second reversal valve connects with oil pump, the oil return opening of described second reversal valve
Connect with fuel tank, the first hydraulic fluid port of described second reversal valve and the rodless cavity of described control oil cylinder it
Between oil circuit on be provided with the first reversal valve of described valve group, the second oil of described second reversal valve
Mouth is connected with the rod chamber of described control oil cylinder；
Wherein, described lock piece is at least for controlling on the oily branch road at self place fluid from described
The rodless cavity of oil cylinder is controlled described in first hydraulic fluid port single flow direction of the second reversal valve；
Described first reversal valve in the case of dead electricity two-way admittance self place, described second change
Oily branch road between first hydraulic fluid port and the rodless cavity oil of described control oil cylinder of valve.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Technique scheme, can be added in valve group on the big chamber oil return line controlling oil cylinder, locking oil
Cylinder is pinned, by lock piece, the fluid controlled in oil cylinder when being in released state so that it is do not bounce back, and
And also need not supply hydraulic oil all the time in the rodless cavity controlling oil cylinder, save the energy.When with it also
When fluctuation occurs in other circuit pressure of connection, nor affect on it and stretch out state, it is ensured that its workability
Energy.When full car power-off condition occurs, oil circuit can be changed at once and make the oil of control oil cylinder rodless cavity
Logical oil return box, the most stuck ratchet of locking oil cylinder, prevent setting-up elevator at steel wire
Rope Action of Gravity Field backspin then out-of-control phenomenon occurs, it is ensured that equipment use security.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application
A part, the schematic description and description of the present invention is used for explaining the present invention, not structure
Become inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation installing super lifting device in prior art on crane arm additional；
Fig. 2 is the structural representation of super lifting device elevator part in prior art；
Fig. 3 is that a kind of hydraulic control controlling oil cylinder in prior art on super lifting device controls loop signal
Figure；
Fig. 4 is that the another kind of hydraulic control control loop controlling oil cylinder in prior art on super lifting device shows
It is intended to；
The signal that a kind of valve group that Fig. 5 provides for the embodiment of the present invention is connected on super lifting device
Figure；
The signal that the another kind of valve group that Fig. 6 provides for the embodiment of the present invention is connected on super lifting device
Figure；
The signal that another valve group that Fig. 7 provides for the embodiment of the present invention is connected on super lifting device
Figure；
The signal that another valve group that Fig. 8 provides for the embodiment of the present invention is connected on super lifting device
Figure.
Detailed description of the invention
Be referred to accompanying drawing Fig. 1～Fig. 8 below and word content understand present disclosure with
And the distinctive points between the present invention and prior art.Hereafter by accompanying drawing and enumerate the present invention's
The mode of some alternative embodiments, to technical scheme (including optimal technical scheme)
It is described in further detail.It should be understood that any technical characteristic in the present embodiment,
Any technical scheme be all the one in the technical characteristic of plurality of optional or optional technical scheme or
Several, in order to describe succinct need in presents cannot the exhaustive present invention all alternatively
Technical characteristic and alternative technical scheme, be also not easy to the embodiment of each technical characteristic
All emphasize that it is one of optional numerous embodiments, so those skilled in the art should know:
Any technical characteristic in the present embodiment and any technical scheme are all not intended to the protection of the present invention
Scope, protection scope of the present invention should include that those skilled in the art do not pay creative work
Thinkable any alternate embodiments.
The technical scheme provided the present invention below in conjunction with Fig. 4～Fig. 8 is explained in more detail
State, any two arbitrary technological means that the present invention provides being replaced or the present invention being provided
The technical scheme that individual or more technological means or technical characteristic are combined mutually and obtain all should
Should be within protection scope of the present invention.
The embodiment of the present invention provides a kind of valve group, comprising: the lock piece being arranged in parallel and first
Reversal valve 4.Lock piece is at least for controlling the one-way flow side of fluid in self place oil branch road
To, the first reversal valve 4 is for two-way admittance self place oil branch road under powering-off state.
First reversal valve 4 has multiple choices, can use multidigit multiple-way valve, but only use it
In part hydraulic fluid port to realize the conducting under powering-off state.Lock piece is for unidirectional locking, certainly,
In addition to unidirectional locking function, lock piece can also have other function, such as in specific feelings
Reverse-conducting under condition.Hereinafter implement form by providing the several of lock piece.Check valve divides
For common check valve and hydraulic control one-way valve.If lock piece is common check valve 7, then lock piece
Only there is the function of unidirectional locking, cannot turn on the most all the time.If lock piece is hydraulic control one-way valve
6, then hydraulic control one-way valve 6 is in addition to having unidirectional locking function, in the control of hydraulic control one-way valve 6
When donsole has control oil, it is also possible to realize reverse-conducting.But the function of this reverse-conducting is whole
Individual system power failure state or engine because of fault flame-out when cannot realize, so must
The reverse-conducting under abnormal conditions must be realized by the first reversal valve 4.
Above-mentioned valve group to be used the control oil cylinder of the crane introduced at background section
As a example by the hydraulic circuit of 15, controlling in oil cylinder 15 and the present embodiment of background section
It is the same for controlling oil cylinder 1.Above-mentioned valve group is used to replace the hydraulic control one-way valve in existing Fig. 4
19, the closure of lock piece is identical with the closure of the hydraulic control one-way valve 19 in existing Fig. 4.
The loop controlling oil cylinder 1 place is divided into following several situation substantially:
System obtains under electricity condition:
Engine work: the piston rod controlling oil cylinder 1 need to stretch out (function A), control
The piston rod of oil cylinder 1 needs retraction (function B), the piston rod of control oil cylinder 1 need to keep stretching out
State (function C).
Shutting down occurs in engine failure: the piston rod controlling oil cylinder 1 needs to bounce back (function D).
Under system power failure state: the piston rod controlling oil cylinder 1 needs to bounce back (function E).
Classification below illustrates.
System is in obtain electricity condition and engine work:
One, the piston rod controlling oil cylinder 1 need to stretch out.Now, fluid is via lock piece way flow
To the rodless cavity of control oil cylinder 1, under the effect of pressure oil, the piston rod controlling oil cylinder 1 is stretched
Go out.
Two, the piston rod controlling oil cylinder 1 needs retraction.If lock piece is the valve without control port,
The most common check valve, then need manual control the first reversal valve 4 to be in power failure state,
So that the fluid controlled in oil cylinder 1 rodless cavity can flow out.If lock piece is with controlling oil
The valve of mouth, such as hydraulic control one-way valve 6, balanced valve 8, hydraulic two-way lock 9, then need not make
Obtain the first reversal valve 4 and be in power failure state, if hydraulic control one-way valve 6, balanced valve 8, Hydraulic Double
Pressure oil liquid, hydraulic control one-way valve 6, balanced valve 8, hydraulic pressure is had in the hydraulic control hydraulic fluid port of lock 9
The oil circuit at reversible lock 9 place just energy reverse-conducting, realizes controlling returning of oil cylinder 1 piston rod with this
Contracting.
Three, the piston rod controlling oil cylinder 1 need to keep the state of stretching out.Now, it is not necessary to be further continued for into
Control the hydraulic circuit fuel feeding of oil cylinder 1, if lock piece is the valve without control port, the most general
Logical check valve 7, due to the unidirectional locking function of common check valve 7, control oil cylinder 1 without bar
Fluid in chamber cannot flow out, and the piston rod controlling oil cylinder 1 keeps stretching out state.If lock piece
For the valve with control port, such as hydraulic control one-way valve 6, balanced valve 8, hydraulic two-way lock 9,
As long as not noting pressure oil in control port, lock piece would not reverse-conducting, so also
The cut-off state of lock piece place oil branch road can be kept, so that control the piston rod of oil cylinder 1
Keep stretching out state.
System is in obtain electricity condition and engine failure appearance shutdown: now, whole setting-up system
Running out of steam, easily there is stall accident in setting-up elevator, for making crane in a safe condition,
The piston rod controlling oil cylinder 1 need to bounce back rapidly, makes locked the preventing of elevator invert.Owing to first changes
The oily branch road at its place only can be automatically turned under power failure state to valve 4, so at engine
When shutting down occurs in fault, need manual operation to control the first reversal valve 4 and be in power failure state.Specifically
Can be realized by the control program arranging PLC, PLC Real-time Collection is sent out
The rotating speed of motivation, when the rotating speed of engine is zero, PLC controls the first reversal valve 4
Dead electricity, thus turn on the oily branch road at the first reversal valve 4 place.First reversal valve 4 can be electricity
Magnet valve, PLC specifically makes the electromagnet dead electricity on the first reversal valve 4.PLC is set
Controller can be implemented in engine because of fault stop working time, the locking oil cylinder 2 of super lifting device also can
Stuck ratchet.
System is under power failure state, now owing to automatically turning on certainly after the first reversal valve 4 dead electricity
The hydraulic branch at body place, under the effect of the spring 3 installed on locking oil cylinder 2, controls oil
Fluid in the rodless cavity of cylinder 1 is forced out, and controls the piston rod retraction of oil cylinder 1.Locking oil cylinder
2 control oil cylinder 1 drive under clamping elevator, with locking elevator.
From the foregoing, the valve group that technique scheme provides is under power failure state, can automatically lead
The oily branch road at logical first reversal valve 4 place, so that the piston rod controlling oil cylinder 1 can return
Contracting, so that locking oil cylinder 2 can lock elevator, it is ensured that the security of whole system.
Further, the first reversal valve 4 is solenoid directional control valve；When the first reversal valve 4 is in
Electricity condition, the oily branch road cut-off at the first reversal valve 4 place；When the first reversal valve 4 is in dead electricity
State, the oily branch road two-way admittance at the first reversal valve 4 place.
Herein, the first reversal valve 4 is two-bit triplet solenoid directional control valve；First reversal valve 4 has
First hydraulic fluid port the 41, second hydraulic fluid port 42 and the 3rd hydraulic fluid port 43, the first hydraulic fluid port of the first reversal valve 4
41 for connecting with the first hydraulic fluid port of first component, and the second hydraulic fluid port 42 of the first reversal valve 4 is used
Connecting in the first hydraulic fluid port with second component, the 3rd hydraulic fluid port 43 of the first reversal valve 4 does not uses,
It is in cut-off state.When the first reversal valve 4 is in obtain electricity condition, the first of the first reversal valve 4
Hydraulic fluid port 41 connects with the 3rd hydraulic fluid port 43 of the first reversal valve 4, the oil at the first reversal valve 4 place
Branch road ends.When the first reversal valve 4 is in power failure state, the first hydraulic fluid port of the first reversal valve 4
41 connect with the second hydraulic fluid port 42 of the first reversal valve 4, the oily branch road at the first reversal valve 4 place
Two-way admittance.
First component herein is specially the second reversal valve 5；Second component, for controlling oil cylinder 1, is controlled
First hydraulic fluid port of liquefaction cylinder 1 is rodless cavity hydraulic fluid port 11, controls the second hydraulic fluid port of oil cylinder 1 for there being bar
Chamber hydraulic fluid port 12.Second reversal valve 5 is specially Y type three-position four-way electromagnetic directional valve.Second commutation
Valve 5 has oil inlet P, oil return inlet T, first hydraulic fluid port the 53, second hydraulic fluid port 54, above-mentioned
First hydraulic fluid port 53 of the first hydraulic fluid port that is second reversal valve 5 of one parts, above-mentioned first component
Second hydraulic fluid port 54 of the second hydraulic fluid port that is second reversal valve 5.
Lock piece has multiple implementation, and four kind concrete implementation modes are given below:
Mode one, seeing Fig. 5, lock piece is common check valve 7, the oil-feed of common check valve 7
Mouth 71 is for connecting with the first hydraulic fluid port of first component, and the oil-out 72 of common check valve 7 is used
Connect in the first hydraulic fluid port with second component.
If lock piece uses common check valve 7, whole hydraulic circuit can realize following function:
Function A, function C, function E.If again by arranging PLC, to realize first
Reversal valve 4 obtains the control of electric/dead electricity, then whole system can also realize following function: function
B, function D.
Wherein, function A is: system obtains under electricity condition and during engine work, controls
Stretching out of the piston rod of oil cylinder 1.
Function B, system obtain under electricity condition and during engine work, control oil cylinder 1
Piston rod needs retraction.
Function C, system obtain under electricity condition and during engine work, control oil cylinder 1
Piston rod keeps stretching out state.
Function D: when system obtains under electricity condition and engine failure appearance is shut down, control oil cylinder
The retraction of the piston rod of 1.
Under function E, system power failure state, control the retraction of the piston rod of oil cylinder 1.
Mode two, seeing Fig. 6, lock piece is hydraulic control one-way valve 6, the first of hydraulic control one-way valve 6
Hydraulic fluid port 61 is used for connecting with the first hydraulic fluid port of first component, the second hydraulic fluid port of hydraulic control one-way valve 6
62 for connecting with the first hydraulic fluid port of second component, and the control port 63 of hydraulic control one-way valve 6 is used
Connect in the second hydraulic fluid port with first component.
If lock piece uses hydraulic control one-way valve 6, whole hydraulic circuit can realize following function:
Function A, function B, function C, function E.If again by arranging PLC, with reality
Now the first reversal valve 4 is obtained the control of electric/dead electricity, then whole system can also realize following merit
Can: function D.
Mode three, seeing Fig. 7, lock piece is balanced valve 8, the first hydraulic fluid port 81 of balanced valve 8
Connecting for the first hydraulic fluid port with first component, the second hydraulic fluid port 82 of balanced valve 8 is for second
First hydraulic fluid port connection of parts, the control port 83 of balanced valve 8 is used for and the second of first component
Hydraulic fluid port connects.
If lock piece uses balanced valve 8, whole hydraulic circuit can realize following function: function
A, function B, function C, function E.If again by arranging PLC, right to realize
First reversal valve 4 the control of electric/dead electricity, then whole system can also realize following function:
Function D.
Mode four, seeing Fig. 8, lock piece is hydraulic two-way lock 9, the first of hydraulic two-way lock 9
Hydraulic fluid port 91 is used for connecting with the first hydraulic fluid port of first component, the second hydraulic fluid port of hydraulic two-way lock 9
92 for connecting with the first hydraulic fluid port of second component, the first control port 93 of hydraulic two-way lock 9
Connect for the second hydraulic fluid port with first component.3rd hydraulic fluid port 94 of hydraulic two-way lock 9 for
Second hydraulic fluid port connection of first component, the 4th hydraulic fluid port 95 of hydraulic two-way lock 9 is used for and second
Second hydraulic fluid port connection of part, the second control port 96 of hydraulic two-way lock 9 is used for and first component
First hydraulic fluid port connection.
If lock piece uses hydraulic two-way lock 9, whole hydraulic circuit can realize following function:
Function A, function B, function C, function E.If again by arranging PLC, with reality
Now the first reversal valve 4 is obtained the control of electric/dead electricity, then whole system can also realize following merit
Can: function D.
The valve group that technique scheme provides, is preferably used on the super lifting device of crane.On
State valve group to have the advantage that
1, due to the sealing function of lock piece, setting-up pressure oscillation time control liquefaction cylinder 1 is effectively prevented
Retraction.
2, when elevator need to keep released state, system need not continue to the rodless cavity controlling oil cylinder 1
Hydraulic oil is provided, saves the energy.
3, when the catastrophic failures such as car load power failure occur, locking oil cylinder 2 can pin ratchet in time to be prevented
Only accident occurs.
The embodiment of the present invention reoffers a kind of hydraulic means, commutates including controlling oil cylinder 1, second
The valve group that valve 5 and the arbitrary technical scheme of the present invention are provided.The oil inlet P of the second reversal valve 5
Connecting with oil pump, the oil return inlet T of the second reversal valve 5 connects with fuel tank, the second reversal valve 5
It is provided with the first of valve group on oil circuit between first hydraulic fluid port 53 and the rodless cavity controlling oil cylinder 1 to change
To valve 4, the second hydraulic fluid port 54 of the second reversal valve 5 connects with the rod chamber controlling oil cylinder 1.Its
In, lock piece is at least for controlling on the oily branch road at self place fluid from the second reversal valve 5
First hydraulic fluid port 53 single flow direction controls the rodless cavity of oil cylinder 1.First reversal valve 4 is in dead electricity situation
Lower two-way admittance self place, the second reversal valve 5 the first hydraulic fluid port 53 and control oil cylinder 1
Rodless cavity hydraulic fluid port 11 between oily branch road.
Above-mentioned hydraulic means, has unidirectional locking function, can save the energy, it is to avoid locking oil cylinder
Do nodding action, prevent locking oil cylinder 2 and hoisting ratchet collision；The more important thing is and roll up in setting-up
Raise full car in rotation process have a power failure suddenly or engine because of fault stop working time, the locking of super lifting device
Oil cylinder 2 can timely stuck ratchet.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if it discloses
Number range, then disclosed number range is preferred number range, any this area
Skilled artisans appreciated that: preferably number range is only technology in many enforceable numerical value
The numerical value that effectiveness comparison is obvious or representative.Owing to numerical value is more, it is impossible to exhaustive, so
The present invention just open component values to illustrate technical scheme, and, above-mentioned row
The numerical value lifted should not constitute the restriction to the invention protection domain.
If being used herein the word such as " first ", " second " to if limiting parts,
Those skilled in the art should know: " first ", the use of " second " are only used to just
Distinguishing parts on describing such as does not has outside Stated otherwise, and above-mentioned word is the most special
Implication.
Meanwhile, if the invention described above discloses or relate to parts or the knot of connection fastened to each other
Component, then, unless otherwise stated, fixing connection is it is to be understood that can releasably fix
Connect (such as using bolt or screw to connect), it is understood that for: non-removable fixing
Connecting (such as rivet, weld), certainly, connection fastened to each other can also be integral type structure
(such as use casting technique is integrally formed manufacture) is replaced (substantially cannot be used integrally
Except forming technology).
It addition, being used for applied in arbitrary technical scheme disclosed in the invention described above represents position
The term of relation or shape its implication unless otherwise stated includes approximating with it, similar or close
State or shape.The either component that the present invention provides both can be by multiple single parts
Assemble, it is also possible to the separate part that the technique that is one of the forming manufactures.
Finally should be noted that: above example only in order to technical scheme to be described and
Non-to its restriction；Although the present invention being described in detail with reference to preferred embodiment, affiliated
The those of ordinary skill in field is it is understood that still can enter the detailed description of the invention of the present invention
Row is revised or portion of techniques feature is carried out equivalent；Without deviating from technical solution of the present invention
Spirit, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (10)
1. a valve group, it is characterised in that including: the lock piece being arranged in parallel and the first commutation
Valve；
Described lock piece is at least for controlling the one-way flow side of fluid in self place oil branch road
To；Described first reversal valve, for two-way admittance self place oil branch road under powering-off state, makes
Obtain the oil circuit two-way admittance at described valve group place.
Valve group the most according to claim 1, it is characterised in that described first reversal valve is
Solenoid directional control valve；
When described first reversal valve is in obtain electricity condition, the oily branch road at described first reversal valve place
Cut-off；When described first reversal valve is in power failure state, and the oil at described first reversal valve place props up
Road two-way admittance.
Valve group the most according to claim 2, it is characterised in that described first reversal valve is
Two-bit triplet solenoid directional control valve；
Described first reversal valve has the first hydraulic fluid port, the second hydraulic fluid port and the 3rd hydraulic fluid port, and described first
First hydraulic fluid port of reversal valve is used for connecting with the first hydraulic fluid port of first component, described first reversal valve
The second hydraulic fluid port for connecting with the first hydraulic fluid port of second component, the 3rd of described first reversal valve
Hydraulic fluid port ends；
When described first reversal valve is in obtain electricity condition, the first hydraulic fluid port of described first reversal valve and
3rd hydraulic fluid port connection of described first reversal valve, the oily branch road cut-off at described first reversal valve place；
When described first reversal valve is in power failure state, the first hydraulic fluid port of described first reversal valve and
Second hydraulic fluid port connection of described first reversal valve, the oily branch road at described first reversal valve place is two-way
Conducting.
Valve group the most according to claim 3, it is characterised in that described lock piece is common
Check valve, the oil-in of described common check valve is for the first hydraulic fluid port with described first component even
Logical, the oil-out of described common check valve is for connecting with the first hydraulic fluid port of second component.
Valve group the most according to claim 3, it is characterised in that described lock piece is hydraulic control
Check valve, the first hydraulic fluid port of described hydraulic control one-way valve is for the first hydraulic fluid port with described first component
Connection, the second hydraulic fluid port of described hydraulic control one-way valve is used for connecting with the first hydraulic fluid port of second component,
The control port of described hydraulic control one-way valve is for connecting with the second hydraulic fluid port of described first component.
Valve group the most according to claim 3, it is characterised in that described lock piece is balance
Valve, the first hydraulic fluid port of described balanced valve is used for connecting with the first hydraulic fluid port of described first component, institute
The second hydraulic fluid port stating balanced valve connects for the first hydraulic fluid port with described second component, described balance
The control port of valve is for connecting with the second hydraulic fluid port of described first component.
Valve group the most according to claim 3, it is characterised in that described lock piece is hydraulic pressure
Reversible lock,
First hydraulic fluid port of described hydraulic two-way lock is for the first hydraulic fluid port with described first component even
Logical, the second hydraulic fluid port of described hydraulic two-way lock is used for connecting with the first hydraulic fluid port of second component, institute
The first control port stating hydraulic two-way lock connects for the second hydraulic fluid port with described first component；
3rd hydraulic fluid port of described hydraulic two-way lock is for the second hydraulic fluid port with described first component even
Logical, the 4th hydraulic fluid port of described hydraulic two-way lock is used for connecting with the second hydraulic fluid port of second component, institute
The second control port stating hydraulic two-way lock connects for the first hydraulic fluid port with described first component.
Valve group the most according to claim 3, it is characterised in that
Described first component is the second reversal valve；
Described second component is for controlling oil cylinder, and the first hydraulic fluid port of described control oil cylinder is rodless cavity oil
Mouthful, the second hydraulic fluid port of described control oil cylinder is rod chamber hydraulic fluid port.
Valve group the most according to claim 8, it is characterised in that described second reversal valve is
Y type three-position four-way electromagnetic directional valve.
10. a hydraulic means, it is characterised in that include control oil cylinder, the second reversal valve and
The arbitrary described valve group of claim 1-7；
The oil-in of described second reversal valve connects with oil pump, the oil return opening of described second reversal valve
Connect with fuel tank, the first hydraulic fluid port of described second reversal valve and the rodless cavity of described control oil cylinder it
Between oil circuit on be provided with the first reversal valve of described valve group, the second oil of described second reversal valve
Mouth is connected with the rod chamber of described control oil cylinder；
Wherein, described lock piece is at least for controlling on the oily branch road at self place fluid from described
The rodless cavity of oil cylinder is controlled described in first hydraulic fluid port single flow direction of the second reversal valve；
Described first reversal valve in the case of dead electricity two-way admittance self place, described second change
Oily branch road between first hydraulic fluid port and the rodless cavity oil of described control oil cylinder of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160034.7A CN103922233B (en) | 2014-04-21 | 2014-04-21 | Valve group and hydraulic means |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410160034.7A CN103922233B (en) | 2014-04-21 | 2014-04-21 | Valve group and hydraulic means |
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| CN103922233A CN103922233A (en) | 2014-07-16 |
| CN103922233B true CN103922233B (en) | 2016-08-24 |
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| CN201410160034.7A Active CN103922233B (en) | 2014-04-21 | 2014-04-21 | Valve group and hydraulic means |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105221509B (en) * | 2015-11-02 | 2017-03-22 | 宁波江北宇洲液压设备厂 | Balance valve to open in phases |
| CN112850519B (en) * | 2021-01-19 | 2022-12-30 | 芜湖市双彩智能科技有限公司 | Logistics is with positive crane support arm of heavy cabinet |
| CN115159366B (en) * | 2022-07-26 | 2023-09-01 | 江苏新均力重工有限公司 | Large steel structure bracket suspension construction equipment and suspension method |
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| CN202468546U (en) * | 2012-02-23 | 2012-10-03 | 芜湖市银鸿液压件有限公司 | Combined quick pressure relief lock |
| CN102788057A (en) * | 2012-08-27 | 2012-11-21 | 徐州重型机械有限公司 | Device for preventing cylinder from moving forwards and crane |
| CN202556705U (en) * | 2011-12-06 | 2012-11-28 | 海天塑机集团有限公司 | Pressure power-off protection system for applying high-pressure energy accumulator on injection molding machine |
| JP5130411B1 (en) * | 2012-08-06 | 2013-01-30 | 株式会社堀内機械 | Damper cylinder with lock function |
| CN202864722U (en) * | 2012-08-17 | 2013-04-10 | 徐州重型机械有限公司 | Crane and hydraulic control system of super lifting device thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000335894A (en) * | 1999-05-25 | 2000-12-05 | Tcm Corp | Hydraulic device for cargo handling |
| JP4216039B2 (en) * | 2002-08-20 | 2009-01-28 | カヤバ工業株式会社 | Lock cylinder and stabilizer function adjusting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202556705U (en) * | 2011-12-06 | 2012-11-28 | 海天塑机集团有限公司 | Pressure power-off protection system for applying high-pressure energy accumulator on injection molding machine |
| CN202468546U (en) * | 2012-02-23 | 2012-10-03 | 芜湖市银鸿液压件有限公司 | Combined quick pressure relief lock |
| JP5130411B1 (en) * | 2012-08-06 | 2013-01-30 | 株式会社堀内機械 | Damper cylinder with lock function |
| CN202864722U (en) * | 2012-08-17 | 2013-04-10 | 徐州重型机械有限公司 | Crane and hydraulic control system of super lifting device thereof |
| CN102788057A (en) * | 2012-08-27 | 2012-11-21 | 徐州重型机械有限公司 | Device for preventing cylinder from moving forwards and crane |
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| CN103922233A (en) | 2014-07-16 |
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Address after: 221000 Jiangsu city of Xuzhou Province Economic and Technological Development Zone of High Road No. 68 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Address before: 221004 No. 165 Copper Mountain Road, Jiangsu, Xuzhou Patentee before: Xuzhou Heavy Machinery Co., Ltd. |