CN108442213A - The multifunction control system of paver screed - Google Patents
The multifunction control system of paver screed Download PDFInfo
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- CN108442213A CN108442213A CN201810418467.6A CN201810418467A CN108442213A CN 108442213 A CN108442213 A CN 108442213A CN 201810418467 A CN201810418467 A CN 201810418467A CN 108442213 A CN108442213 A CN 108442213A
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- 238000006073 displacement reaction Methods 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 7
- 238000010409 ironing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of multifunction control system of paver screed, hydraulic control system includes two four-way electromagnetic reversing valves one, three-position four-way electromagnetic directional valve one, one-way throttle valve, commutation pressure reducing valve one, two, two four-way electromagnetic reversing valves two of commutation pressure reducing valve, hydraulic valve block and solenoid valve one and solenoid valve two mounted on left and right lift cylinder rod chamber.The functions such as up and down, floating, locking, power-assisted and the anti-creep of paver screed not only may be implemented in the control system of the present invention；And in the control of screed assist function, the problems such as can realizing the left and right sides lift cylinder power-assisted or independent Power assisted control simultaneously as needed, can effectively solve road surface bulge or impression.
Description
Technical field
The present invention relates to paver control system, the multifunction control system of specifically a kind of paver screed.
Background technology
In road builds maintenance construction, paver is mainly used in high-grade highway as important one of construction equipment
The stabilization soil material of base's knead dough layer or the paving operation of asphalt concrete material.And groundwork of the screed as paver
The spreading quality of device, control road pavement during entire paving operation of function all plays a crucial role.Root
According to paving operation construction demand, generally the control of screed is all realized by lift cylinder hydraulic system, including upper
The functions such as liter, decline, floating, locking, power-assisted.Current most of controls to screed function are only to pursue independent function
It realizes and needs additional setting hydraulic circuit to be controlled, not only cause hydraulic circuit complicated but also cannot be satisfied special construction work
The requirement of industry.Such as assist function, left and right sides lift cylinder power-assisted simultaneously only may be implemented, and cannot individually carry out power-assisted control
System thus cannot achieve and carry out paving operation to the road surface with cross fall.
The paving operation process of paver generally comprises parking, starts to walk and the three phases that pave, and stops and rises in paver
It, will if improper to the control process of screed at this time since the stress of screed can change during step
Road surface is caused to generate the road surface defects such as bulge or impression.To solve this problem, most of screed stops in paver at present
Be all in starting-up process to lift cylinder locked to avoid screed generate displacement.But it is locked in short-term in lift cylinder
When, lift cylinder epicoele will appear emptying phenomenon formed negative pressure, later screed can because bottom surface material support force effect to
Upper generation displacement, in turn results in road surface bulge, influences pavement quality.
Application No. is 2014108247568 Chinese invention patents, and a kind of paver is disclosed on December 27th, 2014
Although screed hydraulic control device, the hydraulic control device avoid the screed brought by operation error and decline too fast generation
Security hidden trouble, can also realize the up and down, floating and blocking function of screed.But due to the shadow of throttle valve
It rings and cannot achieve " the floating completely " of screed in paving process, influence pavement spread quality, it is even more impossible to realize screed
Assist function.Paver bulge or pressure caused by parking and starting stage still can not be fundamentally solved with previous the same
The problems such as trace.
Application No. is 2015206998581 Chinese utility model patents, and a kind of hydraulic pressure is disclosed within 11st in September in 2015
Control system and paver, although which avoids is emptied in latching process caused by lift cylinder epicoele now
As that can also realize the functions such as up and down, floating, locking and the power-assisted of screed.But during ironing-board float,
Since there are back pressures, and screed still to be made to cannot be introduced into " floating completely " state for lift cylinder upper and lower cavity, and in assist function
In control, left and right sides lift cylinder power-assisted simultaneously only may be implemented, and cannot individually carry out Power assisted control.
Invention content
In view of the deficiency of the prior art, the present invention provides a kind of multi-functional control system of paver screed
The functions such as up and down, floating, locking, power-assisted and the anti-creep of paver screed may be implemented in system, the control system；Into one
Step, in the control of screed assist function, left and right sides lift cylinder power-assisted simultaneously can be realized as needed, or individually
Power assisted control；Further, it is proposed that a kind of paver, to the control method of screed, can be solved effectively in parking and starting stage
Certainly road surface bulge or the problems such as impression.
To achieve the goals above, the technical solution adopted by the present invention is：The multifunction control system of paver screed,
Including hydraulic control system；
The hydraulic control system include two four-way electromagnetic reversing valves one, three-position four-way electromagnetic directional valve one, one-way throttle valve,
Commutation pressure reducing valve one, commutation and are separately mounted to left lift cylinder at pressure reducing valve two, two four-way electromagnetic reversing valves two, hydraulic valve blocks
Rod chamber and the solenoid valve one on right lift cylinder rod chamber and solenoid valve two.The hydraulic valve block includes working connection, oil return line
And working connection is divided into two pressure oil circuit Pc and Pd by flow valve, flow valve, and respectively with the pressure measurement interface M2 of hydraulic valve block,
M3 is connected.
The high-pressure mouth P1 of two four-way electromagnetic reversing valves one, oil return inlet T 1 respectively with the working connection Pa of hydraulic valve block,
First oil return line Ta is connected, and two control mouths A1, B1 respectively with the second oil return line Tb of hydraulic valve block, pressure measurement interface M1 phases
Connection；
The high-pressure mouth P2 of the three-position four-way electromagnetic directional valve one, oil return inlet T 2 respectively with a pressure oil circuit Pe, the liquid of flow valve
The third oil return line Tc of pressure valve block is connected, and two control mouths A2, B2 respectively with the first oil outlet Aa of hydraulic valve block, second
Oil outlet Ba is connected；The one-way throttle valve is connected in series in the control mouth B2 and hydraulic valve of three-position four-way electromagnetic directional valve one
Between second oil outlet Ba oil circuits of block；
The commutation pressure reducing valve one includes three-position four-way electromagnetic directional valve two and pressure-relief one-way valve one, three-position four-way electromagnetic directional valve
Two high-pressure mouth P3, oil return inlet T 3 are connected with the 4th oil return line Td of another pressure oil circuit Pf of flow valve, hydraulic valve block respectively
Connect, and a control mouth A3 and pressure-relief one-way valve one be connected in series with it is rear be connected with the outlet Ac of the one-way throttle valve, it is another
A control mouth B3 is blocked on hydraulic valve block；
The commutation pressure reducing valve two includes three-position four-way electromagnetic directional valve three and pressure-relief one-way valve two, three-position four-way electromagnetic directional valve
Three high-pressure mouth P4, oil return inlet T 4 are connected with the 5th oil return line Te of another pressure oil circuit Ps of flow valve, hydraulic valve block respectively
It connects, and a control mouth A4 and pressure-relief one-way valve two are connected in series with rear and two four-way electromagnetic reversing valves two oil return inlet T 5
It is connected；Another control mouth B4 is blocked on hydraulic valve block；
The high-pressure mouth P5 of two four-way electromagnetic reversing valves two is connected with the outlet Ac of one-way throttle valve, and a control mouth
A5 is connected with the third oil outlet Ab of hydraulic valve block, another control mouth B5 is blocked on hydraulic valve block；
The hydraulic valve block further includes overflow valve one, solenoid valve three, solenoid valve four, overflow valve two and overflow valve three, the overflow
Valve one is connected in parallel between a pressure oil circuit Pd of flow valve and the 4th oil return line Td of hydraulic valve block；The overflow valve two is simultaneously
Connection is connected between the control mouth A2 of three-position four-way electromagnetic directional valve one and the third oil return line Tc of hydraulic valve block；The overflow valve
Three are connected in parallel between the control mouth B1 and the first oil return line Ta of hydraulic valve block of two four-way electromagnetic reversing valves one；The electricity
Magnet valve three is connected in parallel between the outlet of one-way throttle valve and the control mouth A2 of three-position four-way electromagnetic directional valve one；The electromagnetism
Valve four is connected in series between the entrance of overflow valve two and the first oil outlet Aa of hydraulic valve block；
First oil outlet Aa of the hydraulic valve block is connect with the rodless cavity of left lift cylinder and right lift cylinder respectively；
The the second oil outlet Ba and solenoid valve two of the hydraulic valve block are connected in series with the rear rod chamber with right lift cylinder and are connected；
The third oil outlet Ab and solenoid valve one of the hydraulic valve block are connected in series with the rear rod chamber with left lift cylinder and are connected.
Further include left lift cylinder pressure sensor and right lift cylinder pressure sensor；
Left lift cylinder pressure sensor is mounted on the rod chamber of left lift cylinder；
Right lift cylinder pressure sensor is mounted on the rod chamber of right lift cylinder；
Further include left lift cylinder displacement sensor and right lift cylinder displacement sensor；
Left lift cylinder displacement sensor is mounted on the piston rod of left lift cylinder；
Right lift cylinder displacement sensor is mounted on the piston rod of right lift cylinder.
It is preferred that the Median Function of two position four-way solenoid valve, one and two position four-way solenoid valve two is II types；
It is preferred that the Median Function of the three position four-way electromagnetic valve one is K-type；
It is preferred that the Median Function of the three position four-way electromagnetic valve two and three position four-way electromagnetic valve three is Y types；
Preferentially, the pressure of the commutation pressure reducing valve one and the pressure reducing valve two that commutates is adjusted to electric proportion adjustment；
Further include electric control system for the control for realizing to hydraulic control system, the electric control system, including manipulate
Platform, controller, the left lift cylinder pressure sensor being connected with controller input terminal, right lift cylinder pressure sensor, a left side
Lift cylinder displacement sensor, right lift cylinder displacement sensor；The electric control system further includes and controller output end
The interface that solenoid valve is corresponded in the hydraulic control system being connected has two one interfaces of four-way electromagnetic reversing valve, 3-position 4-way electricity
One interface of magnetic reversal valve, two interface of three-position four-way electromagnetic directional valve, three interface of three-position four-way electromagnetic directional valve, two four-way electromagnetics
Two interface of reversal valve, one interface of solenoid valve, four interface of two interface of solenoid valve, three interface of solenoid valve and solenoid valve；
The control method of screed is included the following steps in parking and starting stage the present invention also provides a kind of paver：
1）Manipulator triggers cutoff command by console, and controller sends out anti-creep function instruction pair to hydraulic control system immediately
Screed implements anti-creep function control；
2）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved more than when paving thickness measured value, controller sends out blocking function instruction to ironing to hydraulic control system before parking
Plate implements blocking function control；Otherwise continue to carry out anti-creep function control to screed；
3）After parking, instructed until manipulator triggers starting by console, to hydraulic pressure control after one setting time of delaying time of controller
System processed sends out float function instruction and implements float function control to screed；
4）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved less than when paving thickness measured value, controller sends out assist function instruction to ironing to hydraulic control system before parking
Plate implements assist function control, and controller can be according to left lift cylinder pressure sensor and right lift cylinder pressure sensing
Device is detected screed boost pressure size, passes through hydraulic control system in real time with left and right lift cylinder change in displacement
The size of boost pressure is adjusted, the influence of screed gravity is mitigated, and then screed is allowed quickly to enter " quick condition "；Otherwise
Continue to carry out float function control to screed.
Compared with prior art, the advantages and positive effects of the present invention are：
The multifunction control system of paver screed not only may be implemented the up and down of paver screed, float, close
The functions such as lock, power-assisted and anti-creep；And in the control of screed assist function, it can realize that the left and right sides is promoted as needed
Oil cylinder while power-assisted or independent Power assisted control；And a kind of paver is proposed on this basis in parking and starting stage pair
The control method of screed, the problems such as can effectively solving road surface bulge or impression.
Description of the drawings
Fig. 1：It is the hydraulic control system schematic diagram of the present invention；
In figure：1, two four-way electromagnetic reversing valves one, 2, three-position four-way electromagnetic directional valve one, 3, one-way throttle valve,
4, commutate pressure reducing valve one, 4.1, three-position four-way electromagnetic directional valve two, 4.2, pressure-relief one-way valve one,
5, commutate pressure reducing valve two, 5.1, three-position four-way electromagnetic directional valve three, 5.2, pressure-relief one-way valve two,
6, two four-way electromagnetic reversing valves two, 7, hydraulic valve block, 7.1, overflow valve one, 7.2, solenoid valve three,
7.3, solenoid valve four, 7.4, overflow valve two, 7.5, flow valve, 7.6, overflow valve three,
8, left lift cylinder, 8.1, left lift cylinder pressure sensor, 8.2, left lift cylinder displacement sensor,
9, right lift cylinder, 9.1, right lift cylinder pressure sensor, 9.2, right lift cylinder displacement sensor, 10, solenoid valve
One, 11, solenoid valve two,
Fig. 2：It is the structure diagram of electric control system of the present invention；
Fig. 3：It is a kind of control method flow chart of the paver of the present invention in parking with the starting stage to screed.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
The multifunction control system of paver screed, including hydraulic control system and electric control system；
Hydraulic control system as shown in Figure 1, including two four-way electromagnetic reversing valves 1, three-position four-way electromagnetic directional valve 1, list
To throttle valve 3, commutation pressure reducing valve 1, commutation pressure reducing valve 25, two four-way electromagnetic reversing valves 26, hydraulic valve blocks 7 and it is mounted on
The solenoid valve 2 11 of the solenoid valve 1 of the rod chamber of left lift cylinder 8 and the rod chamber of right lift cylinder 9.The hydraulic valve block
7 include working connection P, oil return line T and flow valve 7.5, and working connection P be divided to for two pressure oil circuit Pc and Pd by flow valve 7.5, and
It is connected respectively with pressure measurement interface M2, M3 of hydraulic valve block 7.
The high-pressure mouth P1 of two four-way electromagnetic reversing valves 1, oil return inlet T 1 working connection with hydraulic valve block 7 respectively
Pa, oil return line Ta are connected, and two control mouths A1, B1 are connected with the oil return line Tb of hydraulic valve block 7, pressure measurement interface M1 respectively
It connects；
The high-pressure mouth P2 of the three-position four-way electromagnetic directional valve 1, oil return inlet T 2 respectively with a pressure oil circuit of flow valve 7.5
Pe, hydraulic valve block 7 oil return line Tc be connected, and two control mouths A2, B2 respectively with the oil outlet Aa of hydraulic valve block 7, fuel-displaced
Mouth Ba is connected；The one-way throttle valve 3 is connected in series in the control mouth B2 and hydraulic valve block of three-position four-way electromagnetic directional valve 1
Between 7 oil outlet Ba oil circuits；
The commutation pressure reducing valve 1 includes three-position four-way electromagnetic directional valve 2 4.1 and pressure-relief one-way valve 1,3-position 4-way electricity
The high-pressure mouth P3 of magnetic reversal valve 2 4.1, time with another pressure oil circuit Pf of flow valve 7.5, hydraulic valve block 7 respectively of oil return inlet T 3
Oil circuit Td is connected, and a control mouth A3 and pressure-relief one-way valve 1 are connected in series with the rear and one-way throttle valve 3 outlet
Ac is connected, another control mouth B3 is blocked on hydraulic valve block 7；
The commutation pressure reducing valve 25 includes three-position four-way electromagnetic directional valve 3 5.1 and pressure-relief one-way valve 2 5.2,3-position 4-way electricity
The high-pressure mouth P4 of magnetic reversal valve 3 5.1, time with another pressure oil circuit Ps of flow valve 7.5, hydraulic valve block 7 respectively of oil return inlet T 4
It commutates with two four-way electromagnetics after oil circuit Te is connected, and a control mouth A4 and pressure-relief one-way valve 2 5.2 are connected in series with
5 mouthfuls of the oil return inlet T of valve 26 is connected；Another control mouth B4 is blocked on hydraulic valve block 7；
The high-pressure mouth P5 of two four-way electromagnetic reversing valves 26 is connected with the outlet Ac of one-way throttle valve 3, and a control
Mouth A5 is connected with the oil outlet Ab of hydraulic valve block 7, another control mouth B5 is blocked on hydraulic valve block 7；
The hydraulic valve block 7 further includes overflow valve 1, solenoid valve 3 7.2, solenoid valve 4 7.3, overflow valve 2 7.4 and overflow
Valve 3 7.6, the overflow valve 1 are connected in a pressure oil circuit Pd of the flow valve 7.5 and oil return line Td of hydraulic valve block 7 in parallel
Between；The overflow valve 2 7.4 is connected in the control mouth A2 of three-position four-way electromagnetic directional valve 1 and returning for hydraulic valve block 7 in parallel
Between oil circuit Tc；The overflow valve 3 7.6 is connected in the control mouth B1 and hydraulic valve block of two four-way electromagnetic reversing valves 1 in parallel
Between 7 oil return line Ta；The solenoid valve 3 7.2 is connected in outlet and the 3-position 4-way electromagnetic switch of one-way throttle valve 3 in parallel
Between the control mouth A2 of valve 1；The solenoid valve 4 7.3 is connected in series in the entrance of overflow valve 2 7.4 and going out for hydraulic valve block 7
Between hydraulic fluid port Aa；
The oil outlet Aa of the hydraulic valve block 7 is connect with the rodless cavity of left lift cylinder 8 and right lift cylinder 9 respectively；
The oil outlet Ba and solenoid valve 2 11 of the hydraulic valve block 7 are connected in series with the rear rod chamber with right lift cylinder 9 and are connected；
The oil outlet Ab and solenoid valve 1 of the hydraulic valve block 7 are connected in series with the rear rod chamber with left lift cylinder 8 and are connected；
It is preferred that the Median Function of two position four-way solenoid valve 1 is II types, it, can will be in hydraulic system in no power
Working connection P is logical with oil return line T-phase, and system pressure is carried out off-load；The Median Function of two position four-way solenoid valve 26 is also II
Left lift cylinder 8 can be connected to by type in no power with the rod chamber oil circuit of right lift cylinder 9；
It is preferred that the Median Function of the three position four-way electromagnetic valve 1 be K-type, in no power, can by left lift cylinder 8 with
The rodless cavity oil circuit of right lift cylinder 9 is connected to the oil return line T of hydraulic valve block 7 simultaneously；
It is preferred that the Median Function of the three position four-way electromagnetic valve 2 4.1 and three position four-way electromagnetic valve 3 5.1 is Y types, in no power
When, it can be by time of two control mouths of three position four-way electromagnetic valve 2 4.1 and three position four-way electromagnetic valve 3 5.1 and hydraulic valve block 7
Oil circuit T connections, make commutation pressure reducing valve 1 not work with commutation pressure reducing valve 25；
Wherein commutation pressure reducing valve 1 and the pressure for the pressure reducing valve 25 that commutates is adjusted to electric proportion adjustment, can be used for adjusting left promotion
The boost pressure of 9 rodless cavity of boost pressure and right lift cylinder of 8 rod chamber of oil cylinder；
Electric control system as shown in Figure 2, including console, controller, the left lift cylinder being connected with controller input terminal
Pressure sensor, right lift cylinder pressure sensor, left lift cylinder displacement sensor, right lift cylinder displacement sensor；And
The interface that solenoid valve is corresponded in the hydraulic control system being connected with controller output end has two four-way electromagnetic reversing valves 1
Interface Y1.1, the interface Y2.1 and Y3.1 of three-position four-way electromagnetic directional valve 1, three-position four-way electromagnetic directional valve 2 4.1 connect
Interface Y6.1, the solenoid valve of mouthful Y4.1,3 5.1 interface Y5.1 of three-position four-way electromagnetic directional valve, two four-way electromagnetic reversing valves 26
One 10 interface Y9.1, the interface Y10.1 of solenoid valve 2 11, the interface Y7.2.1 of solenoid valve 3 7.2 and connecing for solenoid valve 4 7.3
Mouth Y7.3.1；
Wherein left lift cylinder pressure sensor 8.1 is mounted on the rod chamber of left lift cylinder 8, right lift cylinder pressure sensor
9.1 are mounted on the rod chamber of right lift cylinder 9；Left lift cylinder displacement sensor 8.2 is mounted on the piston rod of left lift cylinder 8
On, right lift cylinder displacement sensor 9.2 is mounted on the piston rod of right lift cylinder 9；
Following several function controls of paver screed may be implemented in the multifunction control system of paver screed of the present invention,
It is described in detail in conjunction with attached drawing 1：
When paver screed is implemented to rise function, make electromagnet Y1, the 3-position 4-way electricity of two four-way electromagnetic reversing valves 1
The electromagnet Y2 of the magnetic reversal valve 1 and electromagnet Y7 of solenoid valve 4 7.2 obtain it is electric, remaining electromagnet Y3, Y4, Y5, Y6, Y8, Y9,
Y10 is powered off, and the working connection P of hydraulic valve block 7 flows through the high-pressure mouth of three-position four-way electromagnetic directional valve 1 from Pb, Pc, Pe mouthfuls at this time
P2, control mouth B2, then divide two-way by the way valve passageway of one-way throttle valve 3, flow through two four-way electromagnetic reversing valves all the way
26 high-pressure mouth P5, control mouth A5 is mounted on from the outlet Ab of hydraulic valve block 7 outflow conductings on 8 rod chamber of left lift cylinder
Solenoid valve 1 arrives the rod chamber of left lift cylinder 8；Another way is carried from the oil outlet Ba outflow conductings of hydraulic valve block 7 mounted on the right side
Solenoid valve 2 11 on 9 rod chamber of oil-lifting jar arrives the rod chamber of right lift cylinder 9, and left and right lift cylinder 8,9 is lifted.At this time
The pressure of system is defined by overflow valve 3 7.6, and can be measured by the pressure measurement interface M1 in hydraulic valve block 7.
When paver screed is implemented to decline function, make two four-way electromagnetic reversing valves 1 electromagnet Y1, three four
The electromagnet Y9 and solenoid valve of the electromagnet Y3 of electric change valve 1, the electromagnet Y7 of solenoid valve 4 7.2, solenoid valve 1
11 electromagnet Y10 obtains electric, remaining electromagnet Y2, Y4, Y5, Y6, Y8 are powered off, at this time the working connection P of hydraulic valve block 7 from Pb,
Pc, Pe mouthfuls of P2 mouthfuls of the high-pressure mouths for flowing through three-position four-way electromagnetic directional valve 1, control mouth A2, by solenoid valve 4 7.3, from hydraulic pressure
The oil outlet Aa of valve block 7 exits into the rodless cavity of left and right lift cylinder 8,9, and left and right lift cylinder is made to decline；And it is left
The rod chamber fluid of lift cylinder 8 is through solenoid valve 1, the oil outlet Ab of hydraulic valve block 7 and two four-way electromagnetic reversing valves 26
Control mouth A5, high-pressure mouth P5 to one-way throttle 3, and the rod chamber fluid of right lift cylinder 9 is through solenoid valve 2 11, hydraulic valve block
7 oil outlet Ba also arrives one-way throttle 3, and the rod chamber fluid of left and right lift cylinder 8,9 flows through one-way throttle 3 together at this time
Throttling passage, control mouth B2, oil return inlet T 2 by three-position four-way electromagnetic directional valve 1 return to the oil return line T of hydraulic valve block 7.
The pressure that lift cylinder declines at this time is defined by overflow valve 2 7.4, and is acted in the throttling passage of one-way throttle valve 3
Under, paver screed can be made steadily to decline.
When paver screed implementation float function, it need to only make the electricity of the electromagnet Y9 and solenoid valve 2 11 of solenoid valve 1
Magnet Y10 obtains electric, remaining electromagnet Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8 are powered off, at this time the left and right lift cylinder 8 of screed,
9 upper and lower cavity fluid by position in the K-type of solenoid valve 3 7.2 and three-position four-way electromagnetic directional valve 1 simultaneously and hydraulic valve block 7
Oil return line T-phase is connected to, and realizes the floating of screed.Due in the upper and lower cavity fluid flow process of lift cylinder not by any damping
Influence, may be implemented " completely float " of paver screed.
When paver screed implements blocking function, the electromagnet Y8 of solenoid valve 4 7.3 is only needed to be powered, remaining electromagnet
Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y9, Y10 are powered off, at this time the upper and lower cavity oil of the left and right lift cylinder of paver screed 8,9
Liquid is lockked by solenoid valve 7.3 and solenoid valve 1, solenoid valve 2 11, makes lift cylinder that can not act.
When paver screed implements assist function, the advantages of technical solution is can to realize left and right two as needed
Side lift cylinder while power-assisted or independent Power assisted control.When needing left and right sides lift cylinder power-assisted simultaneously, make two four-ways
The electromagnet of the electromagnet Y1 of solenoid directional control valve 1, the electromagnet Y4 of three-position four-way electromagnetic directional valve 2 4.1, solenoid valve 4 7.2
The electromagnet Y10 of Y7, the electromagnet Y9 of solenoid valve 1 and solenoid valve 2 11 obtain electric, remaining electromagnet Y2, Y3, Y5, Y6, Y8 is equal
Power-off, at this time the working connection P of hydraulic valve block 7 flow through three-position four-way electromagnetic directional valve 2 4.1 from the Pb mouths of flow valve 7.5, Pd mouthfuls
High-pressure mouth P3, control mouth A3, depressurized to pressure-relief one-way valve 1 and to inlet pressure after divide two-way, flow through two all the way
High-pressure mouth P5, the control mouth A5 of position four-way electromagnetic reversing valve 26, flow out and pass through from the oil outlet Ab of hydraulic valve block 7 and be mounted on
Solenoid valve 1 on 8 rod chamber of left lift cylinder arrives the rod chamber of left lift cylinder 8；Another way is fuel-displaced from hydraulic valve block 7
Mouth Ba flows out and passes through the rod chamber that the solenoid valve 2 11 being mounted on 9 rod chamber of right lift cylinder arrives right lift cylinder 9.At this time
The boost pressure of paver screed is adjusted by pressure-relief one-way valve 2 4.2, and lift cylinder rod chamber is made to remain certain
Back pressure, mitigate effect of the screed its own gravity to paved mixture.The back pressure of lift cylinder rod chamber, can be by electrical
It left lift cylinder pressure sensor 8.1 on the rod chamber of left lift cylinder 8 in control system and is carried mounted on the right side
Right lift cylinder pressure sensor 9.1 on the rod chamber of oil-lifting jar 9 is monitored.When the needs left and right sides, lift cylinder is independent
When power-assisted, need to carry out following operation, i.e. 3-position 4-way electromagnetic switch on the basis of left and right sides lift cylinder power-assisted simultaneously
The electromagnet Y6 of the electromagnet Y5 of valve 3 5.1 and two four-way electromagnetic reversing valves 26 obtain it is electric, can realize commutation pressure reducing valve 4
Power-assisted adjusting is carried out to the rod chamber of left lift cylinder 8, commutation pressure reducing valve 5 carries out power-assisted tune to the rod chamber of right lift cylinder 9
Section.
When paver screed implements anti-creep function, make two four-way electromagnetic reversing valves 1 electromagnet Y1, three four
The electromagnet Y3 of electric change valve 1, the electromagnet Y7 of solenoid valve 4 7.2 obtain it is electric, remaining electromagnet Y2, Y4, Y5, Y6, Y8,
Y9, Y10 are powered off, and the working connection P of hydraulic valve block 7 flows through three-position four-way electromagnetic directional valve from Pb, Pc, Pe mouth of flow valve at this time
One 2 high-pressure mouth P2, control mouth A2 is exited into left and right from the oil outlet Aa of hydraulic valve block 7 and is carried by solenoid valve 4 7.3
The rodless cavity of oil-lifting jar 8,9 makes 8 nothing of left lift cylinder since the rod chamber of left lift cylinder 8 is under the action of solenoid valve 1
Method declines, and the rod chamber of right lift cylinder 9 makes right lift cylinder 9 that can not decline, in this way under the action of solenoid valve 2 11
So that left and right lift cylinder rodless cavity keeps certain pressure, prevent paver screed from rising in short-term.Lift cylinder rodless cavity
Back pressure, can be adjusted by 2 7.4 pairs of back-pressures of overflow valve.
In conjunction with shown in Fig. 3, the present invention also provides a kind of pavers in the controlling party with the starting stage to screed of stopping
Method includes the following steps：
1）Manipulator triggers cutoff command by the console in electric control system, and controller immediately sends out hydraulic control system
Go out anti-creep function instruction and anti-creep function control is implemented to screed；
2）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved more than when paving thickness measured value, controller sends out blocking function instruction to ironing to hydraulic control system before parking
Plate implements blocking function control；Otherwise continue to carry out anti-creep function control to screed；
3）After parking, instructed until manipulator triggers starting by the console in electric control system, after delaying time of controller 5s
Float function instruction is sent out to hydraulic control system, float function control is implemented to screed；
4）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved less than when paving thickness measured value, controller sends out assist function instruction to ironing to hydraulic control system before parking
Plate implements assist function control, and controller can be according to left lift cylinder pressure sensor and right lift cylinder pressure sensing
Device is detected screed boost pressure size, passes through hydraulic control system in real time with left and right lift cylinder change in displacement
The size of boost pressure is adjusted, the influence of screed gravity is mitigated, and then screed is allowed quickly to enter " quick condition "；Otherwise
Continue to carry out float function control to screed.
Certainly, above-described embodiment is only the preferred embodiment of the present invention, is specifically not limited thereto, on this basis can basis
Actual needs is made with targetedly adjusting, to obtain different embodiments.All application ranges according to the present invention are made
Equivalent change or improvement, should all still fall within the scope of the patent of the present invention.
Claims (8)
1. the multifunction control system of paver screed, which is characterized in that hydraulic control system is changed including two four-way electromagnetics
To valve one（1）, three-position four-way electromagnetic directional valve one（2）, one-way throttle valve（3）, commutation pressure reducing valve one（4）, commutation pressure reducing valve two
（5）, two four-way electromagnetic reversing valves two（6）, hydraulic valve block（7）And it is separately mounted to left lift cylinder（8）Rod chamber and the right side
Lift cylinder（9）Rod chamber on solenoid valve one（10）With solenoid valve two（11）；The hydraulic valve block 7 includes overflow valve one
（7.1）, solenoid valve three（7.2）, solenoid valve four（7.3）, overflow valve two（7.4）, flow valve（7.5）With overflow valve 3 7.6；
Two four-way electromagnetic reversing valves one（1）High-pressure mouth P1, oil return inlet T 1 respectively with the working connection Pa of hydraulic valve block 7,
First oil return line Ta is connected, and two control mouths A1, B1 are respectively and hydraulic valve block（7) the second oil return line Tb, pressure measurement interface
M1 is connected；
The three-position four-way electromagnetic directional valve one（2）High-pressure mouth P2, oil return inlet T 2 respectively and flow valve（7.5）A pressure oil
Road Pe, hydraulic valve block（7）Third oil return line Tc be connected, and two control mouths A2, B2 are respectively and hydraulic valve block（7）First
Oil outlet Aa, the second oil outlet Ba are connected；The one-way throttle valve（3）It is connected in series in three-position four-way electromagnetic directional valve one
（2）Control mouth B2 and hydraulic valve block（7）The second oil outlet Ba between；
The commutation pressure reducing valve one（4）Including three-position four-way electromagnetic directional valve two（4.1）With pressure-relief one-way valve one（4.2）, three
Four-way electromagnetic reversing valve two（4.1）High-pressure mouth P3, oil return inlet T 3 respectively and flow valve（7.5）Another pressure oil circuit Pf, liquid
Pressure valve block（7）The 4th oil return line Td be connected, and a control mouth A3 and pressure-relief one-way valve one（4.2）It is connected in series with rear and institute
State one-way throttle valve（3）Outlet Ac be connected, B3 is in hydraulic valve block for another control mouth（7）On blocked；
The commutation pressure reducing valve two（5）Including three-position four-way electromagnetic directional valve three（5.1）With pressure-relief one-way valve two（5.2）, three
Four-way electromagnetic reversing valve three（5.1）High-pressure mouth P4, oil return inlet T 4 respectively and flow valve（7.5）Another pressure oil circuit Ps, liquid
5th oil return line Te of pressure valve block 7 is connected, and a control mouth A4 and pressure-relief one-way valve two（5.2）After being connected in series with it is described
Two four-way electromagnetic reversing valves two（6）Oil return inlet T 5 be connected；B4 is in hydraulic valve block for another control mouth（7）On sealed
It is stifled；
Two four-way electromagnetic reversing valves two（6）High-pressure mouth P5 and one-way throttle valve（3）Outlet Ac be connected, and one
Control mouth A5 and hydraulic valve block（7）Third oil outlet Ab be connected, B5 is in hydraulic valve block for another control mouth（7）On sealed
It is stifled；
The flow valve（7.5）It is two pressure oil circuit Pc and Pd that working connection P, which is divided to, and respectively and hydraulic valve block（7）Two
A pressure measurement interface M2, M3 is connected, the overflow valve one（7.1）It is connected in flow valve in parallel（7.5）A pressure oil circuit Pd and
Hydraulic valve block（7）The 4th oil return line Td between；The overflow valve two（7.4）It is connected in three-position four-way electromagnetic directional valve one in parallel
（2）Control mouth A2 and hydraulic valve block（7）Third oil return line Tc between；The overflow valve three（7.6）It is connected in two in parallel
Four-way electromagnetic reversing valve one（1）Control mouth B1 and hydraulic valve block（7）The first oil return line Ta between；The solenoid valve three
（7.2）It is connected in one-way throttle valve in parallel（3）Outlet and three-position four-way electromagnetic directional valve one（2）Control mouth A2 between；Institute
State solenoid valve four（7.3）It is connected in series in overflow valve two（7.4）Entrance and hydraulic valve block（7）The first oil outlet Aa between；
The hydraulic valve block（7）The first oil outlet Aa respectively with left lift cylinder（8）With right lift cylinder（9）Rodless cavity connect
It connects；
The hydraulic valve block（7）The second oil outlet Ba and solenoid valve two（11）It is connected in series with rear and right lift cylinder（9）Have
Rod cavity is connected；
The hydraulic valve block（7）Third oil outlet Ab and solenoid valve one（10）It is connected in series with rear and left lift cylinder（8）Have
Rod cavity is connected.
2. the multifunction control system of paver screed according to claim 1, which is characterized in that further include left promotion oil
Cylinder pressure transducer and right lift cylinder pressure sensor；
Left lift cylinder pressure sensor is mounted on the rod chamber of left lift cylinder；
Right lift cylinder pressure sensor is mounted on the rod chamber of right lift cylinder.
3. the multifunction control system of paver screed according to claim 1, which is characterized in that further include left promotion oil
Cylinder displacement sensor and right lift cylinder displacement sensor；
Left lift cylinder displacement sensor is mounted on the piston rod of left lift cylinder；
Right lift cylinder displacement sensor is mounted on the piston rod of right lift cylinder.
4. the multifunction control system of paver screed according to claim 1, which is characterized in that two position four-way solenoid valves
One（1）With two position four-way solenoid valves two（6）Median Function be II types.
5. the multifunction control system of paver screed according to claim 1, which is characterized in that three position four-way electromagnetic valve
One（2）Median Function be K-type.
6. the multifunction control system of paver screed according to claim 1, which is characterized in that three position four-way electromagnetic valve
Two（4.1）With three position four-way electromagnetic valve three（5.1）Median Function be Y types.
7. the multifunction control system of paver screed according to claim 1, which is characterized in that commutation pressure reducing valve one
（4）With commutation pressure reducing valve two（5）Pressure be adjusted to electric proportion adjustment.
8. according to a kind of control method of the multifunction control system of claim 1~7 any one of them paver screed,
It is characterized by comprising the following steps：
1）Manipulator triggers cutoff command by console, and controller sends out anti-creep function instruction pair to hydraulic control system immediately
Screed implements anti-creep function control；
2）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved more than when paving thickness measured value, controller sends out blocking function instruction to ironing to hydraulic control system before parking
Plate implements blocking function control；Otherwise continue to carry out anti-creep function control to screed；
3）After parking, instructed until manipulator triggers starting by console, to hydraulic pressure control after one setting time of delaying time of controller
System processed sends out float function instruction and implements float function control to screed；
4）Left lift cylinder displacement sensor and right lift cylinder displacement sensor are in real time monitored screed displacement, work as position
Detected value is moved less than when paving thickness measured value, controller sends out assist function instruction to ironing to hydraulic control system before parking
Plate implements assist function control, and controller is according to left lift cylinder pressure sensor and right lift cylinder pressure sensor pair
Screed boost pressure size is detected, and is adjusted in real time by hydraulic control system with left and right lift cylinder change in displacement
The size of boost pressure makes screed quickly enter " quick condition "；Otherwise continue to carry out float function control to screed.
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| CN201810418467.6A CN108442213B (en) | 2018-05-04 | 2018-05-04 | Multifunctional control system of paver screed |
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| CN110042732A (en) * | 2019-04-04 | 2019-07-23 | 柳工无锡路面机械有限公司 | A kind of intelligent heating System and method for for sub-base grader |
| CN110656558A (en) * | 2019-09-10 | 2020-01-07 | 江苏四明工程机械有限公司 | Four-crawler intelligent slip form paver and upright post floating electro-hydraulic control system thereof |
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| CN108442213B (en) | 2023-11-21 |
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