CN209455962U - A kind of the full Terrain Cranes setting-up extension and retraction system - Google Patents
A kind of the full Terrain Cranes setting-up extension and retraction system Download PDFInfo
- Publication number
- CN209455962U CN209455962U CN201822198743.0U CN201822198743U CN209455962U CN 209455962 U CN209455962 U CN 209455962U CN 201822198743 U CN201822198743 U CN 201822198743U CN 209455962 U CN209455962 U CN 209455962U
- Authority
- CN
- China
- Prior art keywords
- pressure
- setting
- valve
- oil
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of the full Terrain Cranes setting-up extension and retraction systems, compare multichannel valve group outlet pressure and pump discharge pressure by setting-up controller, the current value of electric proportional pressure control valve in output control hydraulic power source, the pressure cut off value for changing constant pressure variable displacement pump, makes constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.By the above-mentioned means, the utility model can be realized setting-up luffing, exhibition time receiving oil cylinder has preferable synchronism and speed regulation property；Prompt when oil cylinder bounces back in use or auto-tensioning are realized, oil cylinder is realized close to the automatic retarding of upper bottom dead centre, reduces system shock, improve the security and stability of system；Realize output flow with load needed for flow be adapted to, reduce the response speed that ensure that system while system capacity loss, improve the handling of system.
Description
Technical field
The present invention relates to the full Terrain Cranes technical fields, more particularly to a kind of the full Terrain Cranes setting-up folding and unfolding system
System.
Background technique
With the development of nation-building, crane develops to the direction of enlargement increasingly.With crane suspension arm length
Increasing, the amount of deflection of main crane arm in the luffing plane also increases, so that the stress condition of crane arm is more severe when hoist, this
Sample results in the elevating capacity of crane significantly to reduce because of the limitation of acceptor's crane arm amount of deflection and bearing capacity.In order to improve
Hoist performance that is big and influencing main crane arm is spent in disturbing for main crane arm, and super-tonnage crane is generally on main crane arm at present
Super lifting device is installed, crane arm amount of deflection is excessive and influences the situation of its hoist performance to improve.
Super lifting device has a pair of of amplitude oil cylinder and a pair of of exhibition to receive oil cylinder in the prior art.As shown in Figure 1, according to each movement liquid
Pressure oil flow direction is different, and controlling luffing and the movement of exhibition receipts using three-position four-way electromagnetic directional valve 102, (Y1, Y2 control luffing；Y3,Y4
Control exhibition is received)；To prevent setting-up from luffing decline and exhibition receipts swing bad phenomenon occur, using check valve 103 and hydraulic control one-way valve
107 realize lock oil, the protective effect that overflow valve 101 plays level pressure overflow and prevents system pressure excessively high.
When setting-up attonity, all solenoid valves must not be electric, and the oil liquid of constant displacement pump output flows back to fuel tank.
When setting-up luffing rises, the end Y1b, Y2b in three-position four-way electromagnetic directional valve 102 obtain it is electric, what constant displacement pump 100 exported
Right position of the hydraulic oil through Y1, Y2 in three-position four-way electromagnetic directional valve 102, that check valve 103 flows into setting-up amplitude oil cylinder 105 is big
Chamber, the oil liquid in the small chamber of setting-up amplitude oil cylinder flow back to fuel tank, 105 piston rod of setting-up amplitude oil cylinder through three-position four-way electromagnetic directional valve
It stretches out, realizes that luffing rises；When setting-up luffing is fallen, the end Y1a, Y2a in three position four-way electromagnetic valve 102 obtains electric, the output of constant displacement pump 100
Left position of the hydraulic oil through Y1, Y2 in three-position four-way electromagnetic directional valve 102, open hydraulic control balanced valve 104 and flow into setting-up simultaneously
The small chamber of amplitude oil cylinder 105, the oil liquid in the big chamber of setting-up amplitude oil cylinder flow back to fuel tank through balanced valve 104, and setting-up amplitude oil cylinder 105 is living
Stopper rod is withdrawn, and realizes that luffing is fallen.
Setting-up is opened up the time receiving, and the end Y3b, Y4b in three-position four-way electromagnetic directional valve 102 obtains electric, the hydraulic oil of constant displacement pump output
The hydraulic control one-way valve 107 for opening small chamber end simultaneously flows through the inflow setting-up exhibition receipts big chamber of oil cylinder 106 after the hydraulic control one-way valve of big chamber end, small
Oil liquid flows back to fuel tank after flowing through the hydraulic control one-way valve of unlatching in chamber；When setting-up is withdrawn, in three-position four-way electromagnetic directional valve 102
The end Y3a, Y4a obtains electric, and the hydraulic oil of constant displacement pump output opens the hydraulic control one-way valve 107 at big chamber end and simultaneously flows through small chamber end hydraulic control list
Setting-up exhibition is flowed into after to valve and receives the small chamber of oil cylinder 106, and oil liquid flows back to fuel tank after flowing through the hydraulic control one-way valve of unlatching in big chamber.
Above-mentioned setting-up extension and retraction system receives the flow of oil cylinder into two luffings or exhibition if two lateral load of setting-up is inconsistent
Difference, the poor synchronization for causing setting-up luffing, opening up time receiving oil cylinder, super lifting device is installed on principal arm end, asynchronous to be easy to cause
The laod unbalance of principal arm generates some potential safety problems；And luffing movement and exhibition receipts movement can not adjust the speed in above system,
Fine motion is poor, causes difficulty to installation.Meanwhile the energy saving of system is not also high, no matter uninterrupted needed for system, constant displacement pump
100 are exported always with constant flow, and there are higher energy losses for system.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of the full Terrain Cranes setting-up extension and retraction systems, can make hypermutation
Width plays movement, exhibition receipts movement all has preferable synchronism, and can be adjusted the speed, while reducing the unnecessary energy of system and disappearing
Consumption, improves capacity usage ratio.
In order to solve the above technical problems, according to technical solution provided by the invention, a kind of the full Terrain Cranes setting-up
Extension and retraction system receives oil cylinder, for providing pressure oil including the amplitude oil cylinder for setting-up luffing and the exhibition received for setting-up exhibition
Hydraulic power source, the multichannel valve group for switching oil circuit and adjusting flow, the pressure selection for feedback load pressure and feedback oil circuit,
Pilot control oil circuit, the luffing for locking amplitude oil cylinder lock oil circuit, the exhibition receipts locking oil circuit of oil cylinder are received for the exhibition of locking, is used
Multichannel valve group outlet maximum is detected with oil circuit is fed back in the pump discharge pressure sensor of detection pump discharge pressure, by pressure selection
The multichannel valve group outlet pressure sensor of pressure, the handle for operating setting-up luffing and exhibition receipts, the setting-up being electrically connected with handle
Controller is electrically connected the touch screen for showing and changing controller parameter with setting-up controller；
The amplitude oil cylinder and exhibition receive oil cylinder and connect one to one respectively with luffing locking oil circuit and exhibition receipts locking oil circuit, pass through
Multichannel valve group is connect with hydraulic power source；The luffing locking oil circuit, exhibition receive locking oil circuit and pressure selection and feedback oil circuit one is a pair of
It should connect；
The hydraulic power source includes constant pressure variable displacement pump and the electric proportional pressure control valve with constant pressure variable displacement pump cooperation；The constant pressure becomes
The inlet port of amount pump is connect with fuel tank, and oil outlet is connect with the oil inlet of multichannel valve group；The oil inlet of the electricity proportional pressure control valve
It is connect with the control mouth of constant pressure variable displacement pump, oil outlet is connect with fuel tank；Electric proportional pressure control valve is electrically connected with setting-up controller；
The multichannel valve group outlet pressure sensor, pump discharge pressure sensor, multichannel valve group, touch screen, handle and super
Play controller electrical connection；By handle capable of being to setting-up controller input action information, setting-up controller is according to the received movement of institute
Information control is exported to the size of current of multichannel valve group, to change the speed of setting-up luffing or exhibition receipts；By pressure selection and instead
The load pressure of feedback oil circuit feedback is transferred to setting-up controller by multichannel valve group outlet pressure sensor, passes through pump discharge pressure
The real-time pressure of pump discharge is transferred to setting-up controller by sensor, setting-up controller by comparing multichannel valve group outlet pressure and
Pump discharge pressure, output control the current value of electric proportional pressure control valve in hydraulic power source, change the pressure cut off value of constant pressure variable displacement pump, make
Constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.
The length of corresponding oil cylinder can be carried out by being built in the linear transducer group inside amplitude oil cylinder and exhibition receipts oil cylinder
Real-time measurement, the linear transducer group include that a pair of setting-up amplitude oil cylinder for measuring two setting-up amplitude oil cylinder length is long
Length of oil cylinder sensor is received in degree sensor, the setting-up exhibition that length of oil cylinder is received for measuring two setting-up exhibitions；The setting-up luffing oil
Cylinder linear transducer and setting-up exhibition are received length of oil cylinder sensor and are electrically connected with setting-up controller.
The multichannel valve group includes the identical flow control oil circuit of four line structures, the identical flow control of four line structure
The connection of liquefaction Lu Junyu multichannel valve group oil inlet locks oil circuit through corresponding luffing or locking oil circuit is received in exhibition, controls a pair of of setting-up
Oil cylinder is received in amplitude oil cylinder or a pair of of setting-up exhibition；
The identical flow control oil circuit of four line structure separately include pressure compensator, 3-position 4-way Hydraulically-controproportional proportional valve,
A pair of of electricity proportional pressure-reducing valve；The oil inlet of pressure compensator is connect with the oil inlet of multichannel valve group, the oil outlet of pressure compensator
It is connect with the P of 3-position 4-way Hydraulically-controproportional proportional valve mouth, the selection of feedback port and pressure and the feedback oil circuit connection of pressure compensator, three
A, B mouth of four-way Hydraulically-controproportional proportional valve are connect with corresponding locking oil circuit connection, the T mouth of 3-position 4-way Hydraulically-controproportional proportional valve with fuel tank；
The oil outlet of a pair of of electricity proportional pressure-reducing valve is correspondingly connected with 3-position 4-way Hydraulically-controproportional proportional valve both ends respectively, by changing guide's oil pressure
Power controls the aperture of 3-position 4-way Hydraulically-controproportional proportional valve；Electric proportional pressure-reducing valve is electrically connected with setting-up controller.
The pilot control oil circuit guide oil acts on 3-position 4-way hydraulic control ratio through the electric proportional pressure-reducing valve in multichannel valve group
Example valve both ends push spool movement, change the oil circuit and opening degree of 3-position 4-way Hydraulically-controproportional proportional valve.
The pressure selects flow control oil circuit identical with four line structures of multichannel valve group with feedback oil circuit, luffing to lock
Circuit or exhibition receive locking circuit and connect one to one, and the pressure selection includes and 3-position 4-way Hydraulically-controproportional proportional valve with feedback oil circuit
A mouth, B mouthfuls of adaptation connections double check valve, the connection of double check valve adaptation can will in corresponding oil cylinder size chamber pressure it is higher
Spring cavity of the pressure feedback of side to pressure compensator, the pressure compensator of the identical flow control oil circuit of four line structure
Spring cavity be connected to, and connect with multichannel valve group outlet pressure sensor.
Described two structure identical luffing lockings circuit includes first flow regulating valve, second flow regulating valve, balance
Valve, check valve；The first flow regulating valve is connect by check valve and balanced valve with the big chamber of setting-up amplitude oil cylinder, and described second
Flow control valve is connect with the small chamber of setting-up amplitude oil cylinder, and the balanced valve is in parallel with check valve, the control mouth of the balanced valve with
The small chamber connection of setting-up amplitude oil cylinder, the imported oil of the check valve are connect with first flow regulating valve, the check valve it is fuel-displaced
Mouth is connect with the big chamber of setting-up amplitude oil cylinder；
It includes the first hydraulic control one-way valve, the second hydraulic control one-way valve, that locking circuit is received in the identical exhibition of two structures
Three flow control valves, the 4th flow control valve；The third flow control valve receives oil by the first hydraulic control one-way valve and setting-up exhibition
The big chamber connection of cylinder, the 4th flow control valve are opened up the receipts small chamber of oil cylinder with setting-up by the second hydraulic control one-way valve and are connect, the first liquid
The control mouth of control check valve is connect with the oil inlet that the 4th flow is adjusted, the control mouth and third flow tune of the second hydraulic control one-way valve
The oil inlet connection of valve is saved, the oil inlet of the first hydraulic control one-way valve is connect with the oil outlet of third flow control valve, the first hydraulic control
The oil outlet of check valve and setting-up, which are opened up, to be received the big chamber of oil cylinder and connect, the oil inlet of the second hydraulic control one-way valve and the 4th flow control valve
Oil outlet connection, the oil outlet of the second hydraulic control one-way valve are opened up the receipts small chamber of oil cylinder with setting-up and are connect.
A kind of the full Terrain Cranes setting-up folding and unfolding control method including the amplitude oil cylinder for setting-up luffing and is used for setting-up
Oil cylinder is received in the exhibition that exhibition is received；It is characterized by further comprising: being used to provide the hydraulic power source of pressure oil, for switching oil circuit and adjusting stream
The multichannel valve group of amount, for feedback load pressure pressure selection with feedback oil circuit, pilot control oil circuit, for lock luffing oil
Locking oil circuit, the pump discharge pressure for detecting pump discharge pressure are received in the luffing locking oil circuit of cylinder, the exhibition that oil cylinder is received for the exhibition of locking
Force snesor selects to sense with the multichannel valve group outlet pressure for feeding back oil circuit detection multichannel valve group outlet maximum pressure by pressure
Device, for operating setting-up luffing and handle that exhibition is received, the setting-up controller being electrically connected with handle, with setting-up controller being electrically connected use
In the touch screen for showing and changing controller parameter；
The amplitude oil cylinder and exhibition receive oil cylinder and connect one to one respectively with luffing locking oil circuit and exhibition receipts locking oil circuit, pass through
Multichannel valve group is connect with hydraulic power source；The luffing locking oil circuit, exhibition receive locking oil circuit and pressure selection and feedback oil circuit one is a pair of
It should connect；
The hydraulic power source includes constant pressure variable displacement pump and the electric proportional pressure control valve with constant pressure variable displacement pump cooperation；The constant pressure becomes
The inlet port of amount pump is connect with fuel tank, and oil outlet is connect with the oil inlet of multichannel valve group；The oil inlet of the electricity proportional pressure control valve
It is connect with the control mouth of constant pressure variable displacement pump, oil outlet is connect with fuel tank；Electric proportional pressure control valve is electrically connected with setting-up controller；
The multichannel valve group outlet pressure sensor, pump discharge pressure sensor, multichannel valve group, touch screen, handle and super
Play controller electrical connection；By handle capable of being to setting-up controller input action information, setting-up controller is according to the received movement of institute
Information control is exported to the size of current of multichannel valve group, to change the speed of setting-up luffing or exhibition receipts；By pressure selection and instead
The load pressure of feedback oil circuit feedback is transferred to setting-up controller by multichannel valve group outlet pressure sensor, passes through pump discharge pressure
The real-time pressure of pump discharge is transferred to setting-up controller by sensor, setting-up controller by comparing multichannel valve group outlet pressure and
Pump discharge pressure, output control the current value of electric proportional pressure control valve in hydraulic power source, change the pressure cut off value of constant pressure variable displacement pump, make
Constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.
The multichannel valve group realizes the commutation of multichannel valve group by electric proportional pressure-reducing valve pilot-controlled multi-way valve group therein
And flow control；Corresponding Fuel path lock oil is realized by the check valve and hydraulic control one-way valve, to prevent setting-up from occurring declining and put
It is dynamic；Pass through the pressure of electric proportional pressure control valve stepless changing constant-pressure variable pump discharge；By the double check valve A mouthfuls, B mouthfuls of pressure
The pressure transmitting of higher side feeds back to pressure compensator；Multiple movements are simultaneously when carrying out, the double check valve realization high pressure every
From giving the maximum pressure feedback all the way of load to all pressure compensators, and pass by multichannel valve group outlet pressure sensor
Pass setting-up controller；Flow control valve realizes the function of stablizing corresponding pressure flow to each oil circuit；
When setting-up is failure to actuate, all solenoid valves must not be electric, and the constant pressure variable displacement pump is flowed with minimum pressure output
It measures almost nil；When flow needed for system acting is smaller, constant pressure variable displacement pump exports oil liquid with lesser discharge capacity, if system institute
The flow needed increases, and constant pressure variable displacement pump then increases accordingly discharge capacity, and discharge capacity Adaptable System acts demand；
Setting-up luffing rise when, electric proportional pressure-reducing valve Y1b, Y2b obtain it is electric, constant pressure variable displacement pump output hydraulic oil through multichannel valve group
In pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve, by flow control valve with the big chamber end of setting-up amplitude oil cylinder, unidirectional
Valve flows into the big chamber of setting-up amplitude oil cylinder, flow control valve, multichannel valve group stream of the oil liquid through the small chamber end of setting-up amplitude oil cylinder in small chamber
Oil return box, setting-up amplitude oil cylinder piston rod stretch out, and realize that setting-up luffing rises；Setting-up controller is passed according to setting-up amplitude oil cylinder length
The detected value of sensor reduces the control electric current of Y1b, Y2b when luffing rises close to top dead-centre, realizes corresponding setting-up luffing oil
Cylinder slows down, until reaching top dead-centre；
When setting-up luffing is fallen, the end electric proportional pressure-reducing valve Y1a, Y2a obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multichannel
The pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of valve group are opened after the flow control valve by the small chamber end of setting-up amplitude oil cylinder
Balanced valve, while the small chamber of setting-up amplitude oil cylinder is flowed into, flow tune of the oil liquid through balanced valve, the big chamber end of setting-up amplitude oil cylinder in big chamber
Valve is saved, fuel tank is flowed back to by multichannel valve group, setting-up amplitude oil cylinder piston rod is withdrawn, and realizes that setting-up luffing is fallen；Setting-up controller root
It is detected according to setting-up amplitude oil cylinder linear transducer, when luffing is fallen close to bottom dead centre, reduces the control electric current of Y1a, Y2a, realize
Corresponding setting-up amplitude oil cylinder is slowed down, until reaching bottom dead centre；
Setting-up be unfolded when, the end electric proportional pressure-reducing valve Y3b, Y4b obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multi-way valve
The hydraulic control one-way valve that small chamber end is opened after the pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of group, simultaneously flows through the stream at big chamber end
Setting-up being flowed into after adjustable valve, hydraulic control one-way valve, the big chamber of oil cylinder being unfolded, oil liquid flows through the hydraulic control one-way valve of unlatching, flow in small chamber
Regulating valve stream, then through multichannel valve group oil return box, setting-up is unfolded cylinder piston rod and is stretched out, and realizes setting-up expansion；Setting-up controller root
According to the detected value of setting-up expansion length of oil cylinder sensor, passing through when oil cylinder is unfolded close to top dead-centre in setting-up reduces Y3b, Y4b
Electric current is controlled, realizes that corresponding setting-up expansion oil cylinder slows down, until reaching top dead-centre；
Setting-up shrink when, the end electric proportional pressure-reducing valve Y3a, Y4a obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multi-way valve
The hydraulic control one-way valve that big chamber end is opened after the pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of group, simultaneously flows through the stream at small chamber end
Setting-up being flowed into after adjustable valve, hydraulic control one-way valve, the small chamber of oil cylinder being unfolded, oil liquid flows through the hydraulic control one-way valve of unlatching, flow in big chamber
Regulating valve, then fuel tank is flowed back to through multichannel valve group, setting-up is unfolded cylinder piston rod and is withdrawn, and realizes that setting-up is shunk；Setting-up controller root
According to the detected value of setting-up expansion length of oil cylinder sensor, passing through when oil cylinder is unfolded close to bottom dead centre in setting-up reduces Y3a, Y4a
Electric current is controlled, realizes that corresponding setting-up expansion oil cylinder slows down, until reaching bottom dead centre；
The pressure that setting-up controller real-time detection pump discharge pressure, multichannel valve group export, to pass through electric proportional overflow in real time
Valve controls the pressure of pump discharge, and pump discharge pressure and multichannel valve group outlet pressure is made to maintain a constant pressure difference.
The setting-up controller is also electrically connected with linear transducer group, and amplitude oil cylinder, exhibition receive oil cylinder and all reach after top dead center,
When occurring oil cylinder retraction situation in use process, the setting-up controller becomes according to the length of oil cylinder that linear transducer group detects
Change, in conjunction with touch screen select mode, prompt by touch screen to operator or adjust automatically control multichannel valve group electricity
Stream, adjustment length of oil cylinder restore tensioning state；Luffing is done in setting-up, exhibition is received dynamic, it is long that oil cylinder is received in left and right amplitude oil cylinder or left and right exhibition
When degree difference reaches certain value and makees, the mode that setting-up controller the combination touch screen selects, by touch screen to operator into
Row prompt or adjust automatically multichannel valve group electric current, to guarantee that a pair of of amplitude oil cylinder or exhibition receive the synchronism of oil cylinder；In setting-up luffing
When oil cylinder or exhibition receive cylinder movement close to upper bottom dead centre, the setting-up controller reduction is output to the control electric current of multichannel valve group,
Corresponding oil cylinder slows down, and reduces impact.
It include information can include manual mode and automatic mode to the mode that setting-up controller inputs by touch screen.
Beneficial effects of the present invention are as follows:
(1) speed regulation of setting-up luffing, exhibition receipts movement is realized；
(2) synchronism for realizing setting-up luffing, opening up time receiving oil cylinder；
(3) realize in product use process, if a pair of of luffing or exhibition receive length of oil cylinder difference reach certain value
When, system can prompt or carry out auto-tensioning to operator, prevention oil cylinder retraction occur and caused by whole vehicle stability it is dangerous；
(4) realize output flow with load needed for flow be adapted to, reduce the pressure difference between pump discharge and multi-way valve, drop
The response speed that ensure that system while low system capacity loss, has good handling；
(5) when setting-up luffing and exhibition receive cylinder action close to upper bottom dead centre, actively slow down, reduce stopping and impact, mention
Safety is risen.
Detailed description of the invention
Fig. 1 is existing the full Terrain Cranes setting-up extension and retraction system hydraulic schematic diagram；
Fig. 2 is Control system architecture block diagram of the invention；
Fig. 3 is hydraulic system principle figure of the invention；
Fig. 4 is pump discharge pressure of the present invention and multichannel valve group outlet pressure change curve relational graph；
Description of symbols: 1- constant pressure variable displacement pump, 2- pump discharge pressure sensor, 3- multichannel valve group outlet pressure sensing
Device, 4- first flow regulating valve, 5- second flow regulating valve, 6- check valve, 7- balanced valve, 8- setting-up amplitude oil cylinder, 9- setting-up
Amplitude oil cylinder linear transducer, the exhibition of 10- setting-up receive length of oil cylinder sensor, oil cylinder, the first fluid-control one-way of 12- are received in the exhibition of 11- setting-up
Valve, the second hydraulic control one-way valve of 13-, 14- third flow control valve, the 4th flow control valve of 15-, 16- double check valve, 17 3
Four-way Hydraulically-controproportional proportional valve, 18- pressure compensator, 19- electricity proportional pressure-reducing valve, 20- electricity proportional pressure control valve, 100- constant displacement pump, 101-
Overflow valve, 102- three-position four-way electromagnetic directional valve, 103- check valve, 104- balanced valve, 105- setting-up amplitude oil cylinder, 106- setting-up
Oil cylinder, 107- hydraulic control one-way valve, 301- multichannel valve group outlet pressure curve, 302- pump discharge pressure curve are received in exhibition.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
It is as shown in Figures 2 and 3: to all have preferable synchronism in order to make hypermutation width play movement, open up receipts movement, and can
It is adjusted the speed, while reducing the unnecessary energy consumption of system, improve capacity usage ratio, the present invention includes being used for setting-up luffing
Amplitude oil cylinder and for setting-up exhibition receive exhibition receipts oil cylinder, the hydraulic power source for providing pressure oil, for switching oil circuit and adjusting
The multichannel valve group of flow, for feedback load pressure pressure selection with feedback oil circuit, pilot control oil circuit, for locking luffing
Locking oil circuit, the pump discharge for detecting pump discharge pressure are received in the luffing locking oil circuit of oil cylinder, the exhibition that oil cylinder is received for the exhibition of locking
Pressure sensor selects to pass with the multichannel valve group outlet pressure for feeding back oil circuit detection multichannel valve group outlet maximum pressure by pressure
Sensor, for operating setting-up luffing and handle that exhibition is received, the setting-up controller being electrically connected with handle, being electrically connected with setting-up controller
For showing and changing the touch screen of controller parameter；
The amplitude oil cylinder and exhibition receive oil cylinder and connect one to one respectively with luffing locking oil circuit and exhibition receipts locking oil circuit, pass through
Multichannel valve group is connect with hydraulic power source；The luffing locking oil circuit, exhibition receive locking oil circuit and pressure selection and feedback oil circuit one is a pair of
It should connect；
The hydraulic power source includes constant pressure variable displacement pump and the electric proportional pressure control valve with constant pressure variable displacement pump cooperation；The constant pressure becomes
The inlet port of amount pump is connect with fuel tank, and oil outlet is connect with the oil inlet of multichannel valve group；The oil inlet of the electricity proportional pressure control valve
It is connect with the control mouth of constant pressure variable displacement pump, oil outlet is connect with fuel tank；Electric proportional pressure control valve is electrically connected with setting-up controller；
The multichannel valve group outlet pressure sensor, pump discharge pressure sensor, multichannel valve group, touch screen, handle and super
Play controller electrical connection；By handle capable of being to setting-up controller input action information, setting-up controller is according to the received movement of institute
Information control is exported to the size of current of multichannel valve group, to change the speed of setting-up luffing or exhibition receipts；By pressure selection and instead
The load pressure of feedback oil circuit feedback is transferred to setting-up controller by multichannel valve group outlet pressure sensor, passes through pump discharge pressure
The real-time pressure of pump discharge is transferred to setting-up controller by sensor, setting-up controller by comparing multichannel valve group outlet pressure and
Pump discharge pressure, output control the current value of electric proportional pressure control valve in hydraulic power source, change the pressure cut off value of constant pressure variable displacement pump, make
Constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.
The length of corresponding oil cylinder can be carried out by being built in the linear transducer group inside amplitude oil cylinder and exhibition receipts oil cylinder
Real-time measurement, the linear transducer group include that a pair of setting-up amplitude oil cylinder for measuring two setting-up amplitude oil cylinder length is long
Length of oil cylinder sensor is received in degree sensor, the setting-up exhibition that length of oil cylinder is received for measuring two setting-up exhibitions；The setting-up luffing oil
Cylinder linear transducer and setting-up exhibition are received length of oil cylinder sensor and are electrically connected with setting-up controller.
The multichannel valve group includes the identical flow control oil circuit of four line structures, the identical flow control of four line structure
The connection of liquefaction Lu Junyu multichannel valve group oil inlet locks oil circuit through corresponding luffing or locking oil circuit is received in exhibition, controls a pair of of setting-up
Oil cylinder is received in amplitude oil cylinder or a pair of of setting-up exhibition；
The identical flow control oil circuit of four line structure separately include pressure compensator, 3-position 4-way Hydraulically-controproportional proportional valve,
A pair of of electricity proportional pressure-reducing valve；The oil inlet of pressure compensator is connect with the oil inlet of multichannel valve group, the oil outlet of pressure compensator
It is connect with the P of 3-position 4-way Hydraulically-controproportional proportional valve mouth, the selection of feedback port and pressure and the feedback oil circuit connection of pressure compensator, three
A, B mouth of four-way Hydraulically-controproportional proportional valve are connect with corresponding locking oil circuit connection, the T mouth of 3-position 4-way Hydraulically-controproportional proportional valve with fuel tank；
The oil outlet of a pair of of electricity proportional pressure-reducing valve is correspondingly connected with 3-position 4-way Hydraulically-controproportional proportional valve both ends respectively, by changing guide's oil pressure
Power controls the aperture of 3-position 4-way Hydraulically-controproportional proportional valve；Electric proportional pressure-reducing valve is electrically connected with setting-up controller.
The pilot control oil circuit guide oil acts on 3-position 4-way hydraulic control ratio through the electric proportional pressure-reducing valve in multichannel valve group
Example valve both ends push spool movement, change the oil circuit and opening degree of 3-position 4-way Hydraulically-controproportional proportional valve.
The pressure selects flow control oil circuit identical with four line structures of multichannel valve group with feedback oil circuit, luffing to lock
Circuit or exhibition receive locking circuit and connect one to one, and the pressure selection includes and 3-position 4-way Hydraulically-controproportional proportional valve with feedback oil circuit
A mouth, B mouthfuls of adaptation connections double check valve, the connection of double check valve adaptation can will in corresponding oil cylinder size chamber pressure it is higher
Spring cavity of the pressure feedback of side to pressure compensator, the pressure compensator of the identical flow control oil circuit of four line structure
Spring cavity be connected to, and connect with multichannel valve group outlet pressure sensor (3).
Described two structure identical luffing lockings circuit includes first flow regulating valve, second flow regulating valve, balance
Valve, check valve；The first flow regulating valve is connect by check valve and balanced valve with the big chamber of setting-up amplitude oil cylinder, and described second
Flow control valve is connect with the small chamber of setting-up amplitude oil cylinder, and the balanced valve is in parallel with check valve, the control mouth of the balanced valve with
The small chamber connection of setting-up amplitude oil cylinder, the imported oil of the check valve are connect with first flow regulating valve, the check valve it is fuel-displaced
Mouth is connect with the big chamber of setting-up amplitude oil cylinder；
It includes the first hydraulic control one-way valve, the second hydraulic control one-way valve, that locking circuit is received in the identical exhibition of two structures
Three flow control valves, the 4th flow control valve；The third flow control valve receives oil by the first hydraulic control one-way valve and setting-up exhibition
The big chamber connection of cylinder, the 4th flow control valve are opened up the receipts small chamber of oil cylinder with setting-up by the second hydraulic control one-way valve and are connect, the first liquid
The control mouth of control check valve is connect with the oil inlet that the 4th flow is adjusted, the control mouth and third flow tune of the second hydraulic control one-way valve
The oil inlet connection of valve is saved, the oil inlet of the first hydraulic control one-way valve is connect with the oil outlet of third flow control valve, the first hydraulic control
The oil outlet of check valve and setting-up, which are opened up, to be received the big chamber of oil cylinder and connect, the oil inlet of the second hydraulic control one-way valve and the 4th flow control valve
Oil outlet connection, the oil outlet of the second hydraulic control one-way valve are opened up the receipts small chamber of oil cylinder with setting-up and are connect.
A kind of the full Terrain Cranes setting-up folding and unfolding control method including the amplitude oil cylinder for setting-up luffing and is used for setting-up
Oil cylinder is received in the exhibition that exhibition is received；It is characterized by further comprising: being used to provide the hydraulic power source of pressure oil, for switching oil circuit and adjusting stream
The multichannel valve group of amount, for feedback load pressure pressure selection with feedback oil circuit, pilot control oil circuit, for lock luffing oil
Locking oil circuit, the pump discharge pressure for detecting pump discharge pressure are received in the luffing locking oil circuit of cylinder, the exhibition that oil cylinder is received for the exhibition of locking
Force snesor selects to sense with the multichannel valve group outlet pressure for feeding back oil circuit detection multichannel valve group outlet maximum pressure by pressure
Device, for operating setting-up luffing and handle that exhibition is received, the setting-up controller being electrically connected with handle, with setting-up controller being electrically connected use
In the touch screen for showing and changing controller parameter；
The amplitude oil cylinder and exhibition receive oil cylinder and connect one to one respectively with luffing locking oil circuit and exhibition receipts locking oil circuit, pass through
Multichannel valve group is connect with hydraulic power source；The luffing locking oil circuit, exhibition receive locking oil circuit and pressure selection and feedback oil circuit one is a pair of
It should connect；
The hydraulic power source includes constant pressure variable displacement pump and the electric proportional pressure control valve with constant pressure variable displacement pump cooperation；The constant pressure becomes
The inlet port of amount pump is connect with fuel tank, and oil outlet is connect with the oil inlet of multichannel valve group；The oil inlet of the electricity proportional pressure control valve
It is connect with the control mouth of constant pressure variable displacement pump, oil outlet is connect with fuel tank；Electric proportional pressure control valve is electrically connected with setting-up controller；
The multichannel valve group outlet pressure sensor, pump discharge pressure sensor, multichannel valve group, touch screen, handle and super
Play controller electrical connection；By handle capable of being to setting-up controller input action information, setting-up controller is according to the received movement of institute
Information control is exported to the size of current of multichannel valve group, to change the speed of setting-up luffing or exhibition receipts；By pressure selection and instead
The load pressure of feedback oil circuit feedback is transferred to setting-up controller by multichannel valve group outlet pressure sensor, passes through pump discharge pressure
The real-time pressure of pump discharge is transferred to setting-up controller by sensor, setting-up controller by comparing multichannel valve group outlet pressure and
Pump discharge pressure, output control the current value of electric proportional pressure control valve in hydraulic power source, change the pressure cut off value of constant pressure variable displacement pump, make
Constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.
The multichannel valve group realizes the commutation of multichannel valve group by electric proportional pressure-reducing valve pilot-controlled multi-way valve group therein
And flow control；Corresponding Fuel path lock oil is realized by the check valve and hydraulic control one-way valve, to prevent setting-up from occurring declining and put
It is dynamic；Pass through the pressure of electric proportional pressure control valve stepless changing constant-pressure variable pump discharge；By the double check valve A mouthfuls, B mouthfuls of pressure
The pressure transmitting of higher side feeds back to pressure compensator；Multiple movements are simultaneously when carrying out, the double check valve realization high pressure every
From giving the maximum pressure feedback all the way of load to all pressure compensators, and pass by multichannel valve group outlet pressure sensor
Pass setting-up controller；Flow control valve realizes the function of stablizing corresponding pressure flow to each oil circuit；
When setting-up is failure to actuate, all solenoid valves must not be electric, and the constant pressure variable displacement pump is flowed with minimum pressure output
It measures almost nil；When flow needed for system acting is smaller, constant pressure variable displacement pump exports oil liquid with lesser discharge capacity, if system institute
The flow needed increases, and constant pressure variable displacement pump then increases accordingly discharge capacity, and discharge capacity Adaptable System acts demand；
Setting-up luffing rise when, electric proportional pressure-reducing valve Y1b, Y2b obtain it is electric, constant pressure variable displacement pump output hydraulic oil through multichannel valve group
In pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve, by flow control valve with the big chamber end of setting-up amplitude oil cylinder, unidirectional
Valve flows into the big chamber of setting-up amplitude oil cylinder, flow control valve, multichannel valve group stream of the oil liquid through the small chamber end of setting-up amplitude oil cylinder in small chamber
Oil return box, setting-up amplitude oil cylinder piston rod stretch out, and realize that setting-up luffing rises；Setting-up controller is passed according to setting-up amplitude oil cylinder length
The detected value of sensor reduces the control electric current of Y1b, Y2b when luffing rises close to top dead-centre, realizes corresponding setting-up luffing oil
Cylinder slows down, until reaching top dead-centre；
When setting-up luffing is fallen, the end electric proportional pressure-reducing valve Y1a, Y2a obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multichannel
The pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of valve group are opened after the flow control valve by the small chamber end of setting-up amplitude oil cylinder
Balanced valve, while the small chamber of setting-up amplitude oil cylinder is flowed into, flow tune of the oil liquid through balanced valve, the big chamber end of setting-up amplitude oil cylinder in big chamber
Valve is saved, fuel tank is flowed back to by multichannel valve group, setting-up amplitude oil cylinder piston rod is withdrawn, and realizes that setting-up luffing is fallen；Setting-up controller root
It is detected according to setting-up amplitude oil cylinder linear transducer, when luffing is fallen close to bottom dead centre, reduces the control electric current of Y1a, Y2a, realize
Corresponding setting-up amplitude oil cylinder is slowed down, until reaching bottom dead centre；
Setting-up be unfolded when, the end electric proportional pressure-reducing valve Y3b, Y4b obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multi-way valve
The hydraulic control one-way valve that small chamber end is opened after the pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of group, simultaneously flows through the stream at big chamber end
Setting-up being flowed into after adjustable valve, hydraulic control one-way valve, the big chamber of oil cylinder being unfolded, oil liquid flows through the hydraulic control one-way valve of unlatching, flow in small chamber
Regulating valve stream, then through multichannel valve group oil return box, setting-up is unfolded cylinder piston rod and is stretched out, and realizes setting-up expansion；Setting-up controller root
According to the detected value of setting-up expansion length of oil cylinder sensor, passing through when oil cylinder is unfolded close to top dead-centre in setting-up reduces Y3b, Y4b
Electric current is controlled, realizes that corresponding setting-up expansion oil cylinder slows down, until reaching top dead-centre；
Setting-up shrink when, the end electric proportional pressure-reducing valve Y3a, Y4a obtain it is electric, constant pressure variable displacement pump output hydraulic oil flow through multi-way valve
The hydraulic control one-way valve that big chamber end is opened after the pressure compensator and 3-position 4-way Hydraulically-controproportional proportional valve of group, simultaneously flows through the stream at small chamber end
Setting-up being flowed into after adjustable valve, hydraulic control one-way valve, the small chamber of oil cylinder being unfolded, oil liquid flows through the hydraulic control one-way valve of unlatching, flow in big chamber
Regulating valve, then fuel tank is flowed back to through multichannel valve group, setting-up is unfolded cylinder piston rod and is withdrawn, and realizes that setting-up is shunk；Setting-up controller root
According to the detected value of setting-up expansion length of oil cylinder sensor, passing through when oil cylinder is unfolded close to bottom dead centre in setting-up reduces Y3a, Y4a
Electric current is controlled, realizes that corresponding setting-up expansion oil cylinder slows down, until reaching bottom dead centre；
The pressure that setting-up controller real-time detection pump discharge pressure, multichannel valve group export, to pass through electric proportional overflow in real time
Valve controls the pressure of pump discharge, and pump discharge pressure and multichannel valve group outlet pressure is made to maintain a constant pressure difference.
The setting-up controller is also electrically connected with linear transducer group, and amplitude oil cylinder, exhibition receive oil cylinder and all reach after top dead center,
When occurring oil cylinder retraction situation in use process, the setting-up controller becomes according to the length of oil cylinder that linear transducer group detects
Change, in conjunction with touch screen select mode, prompt by touch screen to operator or adjust automatically control multichannel valve group electricity
Stream, adjustment length of oil cylinder restore tensioning state；Luffing is done in setting-up, exhibition is received dynamic, it is long that oil cylinder is received in left and right amplitude oil cylinder or left and right exhibition
When degree difference reaches certain value and makees, the mode that setting-up controller the combination touch screen selects, by touch screen to operator into
Row prompt or adjust automatically multichannel valve group electric current, to guarantee that a pair of of amplitude oil cylinder or exhibition receive the synchronism of oil cylinder；In setting-up luffing
When oil cylinder or exhibition receive cylinder movement close to upper bottom dead centre, the setting-up controller reduction is output to the control electric current of multichannel valve group,
Corresponding oil cylinder slows down, and reduces impact.
It include information can include manual mode and automatic mode to the mode that setting-up controller inputs by touch screen.
Specific embodiment is as follows:
When setting-up attonity, all solenoid valves must not be electric, and the electricity proportional overflow valve core only needs to overcome lesser bullet
Spring force, oil pressure relief is near 0, and the constant pressure variable displacement pump is with minimum pressure output, and flow is almost 0, to reduce energy
Amount loss.
When setting-up acts (luffing or expansion), load pressure selects to feed back to pressure compensator with feedback oil circuit by pressure
Spring cavity, keep pressure difference before and after the 3-position 4-way Hydraulically-controproportional proportional valve in multichannel valve group constant by the pressure compensator, in turn
Flow by the 3-position 4-way Hydraulically-controproportional proportional valve of corresponding multi-way valve is only related with opening degree, i.e. the only electricity with electric proportional pressure-reducing valve
It flows related.During rising such as setting-up luffing, left amplitude oil cylinder load becomes larger, then feeds back to the spring cavity of corresponding pressure compensator
Also correspondence becomes larger pressure, and pressure compensator spool moves up, and is become larger by the flow of pressure compensator, 3-position 4-way Hydraulically-controproportional proportional valve
Upstream pressure also become larger, until upstream pressure is equal to pressure and selects and feed back oil circuit and feed back to the load pressure and bullet of spring cavity
The power that pressure difference is acted on always on spool before and after the sum of spring pressure, i.e. 3-position 4-way Hydraulically-controproportional proportional valve is always pressure compensator
Spring pressure.
Constant pressure variable displacement pump cannot reach maximum pump discharge when setting-up acts, and result in the pressure of pump discharge to reach pressure in this way and cut
Disconnected state of value, and the pressure of multichannel valve outlet is determined by the load that oil cylinder is born, pressure is generally smaller, results in this way
Pressure difference between the pressure and multi-way valve of pump discharge is bigger.To promote energy saving, setting-up controller real-time detection pump discharge pressure
The pressure of power, multichannel valve outlet makes pump discharge pressure and more to control the pressure of pump discharge by electric proportional pressure control valve in real time
Road valve outlet pressure maintains a constant pressure difference.By taking setting-up luffing rises as an example, Fig. 4 curve 301 is the pressure of multichannel valve outlet
Power, can be smaller and smaller；Pump discharge pressure sensor, multi-way valve outlet pressure sensor detected value are transmitted to controller in real time, lead to
Setting-up controller is crossed, the electric current of electric proportional pressure control valve is adjusted in real time, so that the pressure of pump discharge is with multichannel valve outlet
Pressure change maintains certain pressure difference, and following curve shown in Fig. 4 curve 302 is pump discharge pressure curve.
When cylinder movement is close to upper bottom dead centre, i.e. setting-up amplitude oil cylinder linear transducer or setting-up exhibition receives length sensing
When the detected value of device is less than the deceleration setting value in setting-up controller, setting-up controller passes through output and linear transducer detected value
The electric current of adaptation makes oil cylinder slow down to corresponding electromagnet in multichannel valve group to reduce impact；The deceleration setting value can lead to
The touch screen is crossed to be modified；The electric current that setting-up controller output is adapted to linear transducer detected value it is linear or
Ladder relationship.
When in use, the case where oil cylinder bounces back is received in setting-up amplitude oil cylinder or exhibition, when a pair of of setting-up
The difference for the detected value that length of oil cylinder sensor is received in amplitude oil cylinder linear transducer or setting-up exhibition reaches the difference in setting-up controller
When different setting value, when automatic mode, setting-up controller exports the electric current being adapted to linear transducer detected value in multichannel valve group
Corresponding electromagnet makes the length of oil cylinder restore consistent；The difference setting value can be modified by the touch screen；
The electric current that setting-up controller output is adapted to linear transducer detected value is linear or ladder relationship；When manual mode, meeting
Corresponding prompt messages are provided on the touchscreen, and setting-up controller exports inclining to the electric current of multichannel valve group and handle at this time
Rake angle adaptation.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of the full Terrain Cranes setting-up extension and retraction system is received including the amplitude oil cylinder for setting-up luffing and for setting-up exhibition
Oil cylinder is received in exhibition；It is characterized by further comprising: being used to provide the hydraulic power source of pressure oil, for switching oil circuit and adjusting the more of flow
Road valve group, the pressure selection for feedback load pressure and feedback oil circuit, pilot control oil circuit, the change for locking amplitude oil cylinder
Width locking oil circuit, the exhibition that oil cylinder is received for the exhibition of locking receive locking oil circuit, the pump discharge pressure for detecting pump discharge pressure senses
Device (2) selects to detect the multichannel valve group outlet pressure sensor that multichannel valve group exports maximum pressure with feedback oil circuit by pressure
(3), for operating setting-up luffing and handle that exhibition is received, the setting-up controller being electrically connected with handle, being electrically connected with setting-up controller
For showing and changing the touch screen of controller parameter；
The amplitude oil cylinder and exhibition receive oil cylinder and connect one to one respectively with luffing locking oil circuit and exhibition receipts locking oil circuit, through multichannel
Valve group is connect with hydraulic power source；The luffing locking oil circuit, exhibition receive locking oil circuit and pressure selection corresponds with feedback oil circuit and connects
It connects；
The hydraulic power source includes constant pressure variable displacement pump (1) and the electric proportional pressure control valve (20) with constant pressure variable displacement pump cooperation；The perseverance
The inlet port of pressure variable amount pump (1) is connect with fuel tank, and oil outlet is connect with the oil inlet of multichannel valve group；The electricity proportional pressure control valve
(20) oil inlet is connect with the control mouth of constant pressure variable displacement pump (1), and oil outlet is connect with fuel tank；Electric proportional pressure control valve (20) and super
Play controller electrical connection；
The multichannel valve group outlet pressure sensor (3), pump discharge pressure sensor (2), multichannel valve group, touch screen, handle with
The electrical connection of setting-up controller；By handle capable of being to setting-up controller input action information, setting-up controller is received dynamic according to institute
Make information control output to the size of current of multichannel valve group, to change the speed of setting-up luffing or exhibition receipts；By pressure selection with
The load pressure of feedback oil circuit feedback is transferred to setting-up controller by multichannel valve group outlet pressure sensor, passes through pump discharge pressure
The real-time pressure of pump discharge is transferred to setting-up controller by force snesor, and setting-up controller is by comparing multichannel valve group outlet pressure
And pump discharge pressure, output control the current value of electric proportional pressure control valve (20) in hydraulic power source, change the pressure of constant pressure variable displacement pump (1)
Cutoff value makes constant-pressure variable pump discharge pressure and multichannel valve group outlet pressure maintain a constant differential pressure value.
2. a kind of the full Terrain Cranes setting-up extension and retraction system according to claim 1, it is characterised in that: become by being built in
The linear transducer group inside oil cylinder is received in width oil cylinder and exhibition can carry out real-time measurement, the length sensing to the length of corresponding oil cylinder
Device group includes a pair of for measuring the setting-up amplitude oil cylinder linear transducer (9) of two setting-up amplitude oil cylinder length, for measuring
Length of oil cylinder sensor (10) are received in the setting-up exhibition that length of oil cylinder is received in two setting-up exhibitions；The setting-up amplitude oil cylinder linear transducer
(9) length of oil cylinder sensor (10) are received and are electrically connected with setting-up controller with setting-up exhibition.
3. a kind of the full Terrain Cranes setting-up extension and retraction system according to claim 1, it is characterised in that: the multi-way valve
Group includes the identical flow control oil circuit of four line structures, the identical flow control oil circuit of four line structure with multichannel valve group into
Hydraulic fluid port connection locks oil circuit through corresponding luffing or locking oil circuit is received in exhibition, controls a pair of of setting-up amplitude oil cylinder or a pair of of setting-up exhibition
Receive oil cylinder；
The identical flow control oil circuit of four line structure separately includes pressure compensator (18), 3-position 4-way Hydraulically-controproportional proportional valve
(17), a pair of electric proportional pressure-reducing valve (19)；The oil inlet of pressure compensator (18) is connect with the oil inlet of multichannel valve group, and pressure is mended
The oil outlet for repaying device (18) is connect with the P mouth of 3-position 4-way Hydraulically-controproportional proportional valve (17), the feedback port and pressure of pressure compensator (18)
Power selection and feedback oil circuit connection, A, B mouth of 3-position 4-way Hydraulically-controproportional proportional valve (17) and corresponding locking oil circuit connection, three four
The T mouth of logical Hydraulically-controproportional proportional valve is connect with fuel tank；The oil outlet of a pair of of electricity proportional pressure-reducing valve (19) respectively with 3-position 4-way hydraulic control ratio
Example valve (17) both ends are correspondingly connected with, and control the aperture of 3-position 4-way Hydraulically-controproportional proportional valve (17) by changing guide's oil pressure；Electricity
Proportional pressure-reducing valve (19) is electrically connected with setting-up controller.
4. a kind of the full Terrain Cranes setting-up extension and retraction system according to claim 1 or 2, it is characterised in that: the guide
It controls oil circuit guide oil and acts on 3-position 4-way Hydraulically-controproportional proportional valve (17) both ends through the electric proportional pressure-reducing valve (19) in multichannel valve group,
Spool movement is pushed, the oil circuit and opening degree of 3-position 4-way Hydraulically-controproportional proportional valve (17) are changed.
5. a kind of the full Terrain Cranes setting-up extension and retraction system according to claim 1, it is characterised in that: the pressure selection
Locking circuit one is received in flow control oil circuit identical with four line structures of multichannel valve group with feedback oil circuit, luffing locking circuit or exhibition
One is correspondingly connected with, and the pressure selection includes and the A mouth of 3-position 4-way Hydraulically-controproportional proportional valve (17), the B mouthfuls of companies of adaptation with feedback oil circuit
The double check valve (16) connect, double check valve (16) the adaptation connection can be by the pressures of the higher side of pressure in corresponding oil cylinder size chamber
Spring cavity of the force feedback to pressure compensator (18), the pressure compensator (18) of the identical flow control oil circuit of four line structure
Spring cavity be connected to, and connect with multichannel valve group outlet pressure sensor (3).
6. a kind of the full Terrain Cranes setting-up extension and retraction system according to claim 1, it is characterised in that: described two structures
Identical luffing locking oil circuit includes first flow regulating valve (4), second flow regulating valve (5), balanced valve (7), check valve
(6)；The first flow regulating valve (4) is connect by check valve (6) and balanced valve (7) with the big chamber of setting-up amplitude oil cylinder (8), institute
It states second flow regulating valve (5) to connect with setting-up amplitude oil cylinder (8) small chamber, the balanced valve (7) is in parallel with check valve (6), institute
The control mouth for stating balanced valve (7) is connect with setting-up amplitude oil cylinder (8) small chamber, the imported oil and first flow of the check valve (6)
The oil outlet of regulating valve (4) connection, the check valve (6) is connect with the big chamber of setting-up amplitude oil cylinder (8)；
It includes the first hydraulic control one-way valve (12), the second hydraulic control one-way valve that locking oil circuit is received in the identical exhibition of two structures
(13), third flow control valve (14), the 4th flow control valve (15)；The third flow control valve (14) passes through the first hydraulic control
Check valve (12) is opened up the big chamber of receipts oil cylinder (11) with setting-up and is connect, and the 4th flow control valve (15) passes through the second hydraulic control one-way valve
(13) it opens up receipts oil cylinder (11) small chamber with setting-up to connect, the control mouth of the first hydraulic control one-way valve (12) and the 4th flow control valve (15)
Oil inlet connection, the control mouth of the second hydraulic control one-way valve (13) connect with the oil inlet of third flow control valve (14), first
The oil inlet of hydraulic control one-way valve (12) is connect with the oil outlet of third flow control valve (14), and the first hydraulic control one-way valve (12) goes out
Hydraulic fluid port is opened up the big chamber of receipts oil cylinder (11) with setting-up and is connect, the oil inlet of the second hydraulic control one-way valve (13) and the 4th flow control valve (15)
Oil outlet connection, the oil outlet of the second hydraulic control one-way valve (13) connect with setting-up exhibition receipts oil cylinder (11) small chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198743.0U CN209455962U (en) | 2018-12-25 | 2018-12-25 | A kind of the full Terrain Cranes setting-up extension and retraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198743.0U CN209455962U (en) | 2018-12-25 | 2018-12-25 | A kind of the full Terrain Cranes setting-up extension and retraction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209455962U true CN209455962U (en) | 2019-10-01 |
Family
ID=68042245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822198743.0U Expired - Fee Related CN209455962U (en) | 2018-12-25 | 2018-12-25 | A kind of the full Terrain Cranes setting-up extension and retraction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209455962U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368500A (en) * | 2018-12-25 | 2019-02-22 | 臧其亮 | A kind of the full Terrain Cranes setting-up extension and retraction system and control method |
| CN111503073A (en) * | 2020-04-03 | 2020-08-07 | 山西大学 | Semi-closed hydraulic servo control system for mobile coal bunker equipment |
-
2018
- 2018-12-25 CN CN201822198743.0U patent/CN209455962U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368500A (en) * | 2018-12-25 | 2019-02-22 | 臧其亮 | A kind of the full Terrain Cranes setting-up extension and retraction system and control method |
| CN111503073A (en) * | 2020-04-03 | 2020-08-07 | 山西大学 | Semi-closed hydraulic servo control system for mobile coal bunker equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104477798B (en) | The principal arm luffing control system of crane and crane | |
| CN102030293B (en) | Elevated operation vehicle and platform leveling hydraulic system thereof | |
| CN106759621B (en) | Load-sensitive formula loading machine determines variable delivery hydraulic system | |
| CN109368500A (en) | A kind of the full Terrain Cranes setting-up extension and retraction system and control method | |
| CN102628459B (en) | Multi-oil-cylinder synchronous control system and engineering vehicle | |
| CN104925685B (en) | A kind of winch hydraulic system that cable is led by stepless time adjustment constant tensile control | |
| CN209455962U (en) | A kind of the full Terrain Cranes setting-up extension and retraction system | |
| CN201882878U (en) | Elevation operation vehicle and platform leveling hydraulic system thereof | |
| CN105221506A (en) | A kind of load-sensitive valve and load-sensitive hydraulic system | |
| CN107814324B (en) | Take two pressure compensation's anchor winch hydraulic control system | |
| CN107934807A (en) | The variable amplitude hydraulic system and lorry-mounted crane of crane | |
| CN106678096B (en) | A kind of overhead working truck leveling system | |
| CN102705287B (en) | Integrated electro-hydraulic proportional hydraulic valve bank | |
| CN108397434B (en) | Rotary buffer valve, rotary hydraulic system and engineering machinery | |
| CN103398039A (en) | Control valve device, multi-cylinder synchronous control hydraulic system and crane | |
| CN204096970U (en) | A kind of luffing range of cantilever support hydraulic efficiency pressure system of hoisting crane and hoisting crane | |
| CN101949397A (en) | Balanced valve bank of derricking cylinder system | |
| CN203430890U (en) | Control valve device, multi-cylinder synchronous control hydraulic system and crane | |
| CN110985459A (en) | Hydraulic control system of load-sensitive pump | |
| CN107883028B (en) | The ratio one-way flow valves of double-direction control | |
| CN203411244U (en) | Control system for synchronous lifting and descending of crawler crane mast | |
| CN108437734A (en) | A kind of hydro-pneumatic suspension system and the engineering machinery with the system | |
| CN204549901U (en) | A kind of digital gravity variable amplitude hydraulic system | |
| CN208381413U (en) | A kind of pilot-operated type threeway proportional pressure-reducing valve | |
| CN203373114U (en) | Tube explosion resistant oil hydraulic circuit of vertical lifting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 Termination date: 20211225 |