CN107002390A - The hydraulic circuit control device of engineering machinery - Google Patents
The hydraulic circuit control device of engineering machinery Download PDFInfo
- Publication number
- CN107002390A CN107002390A CN201580065189.5A CN201580065189A CN107002390A CN 107002390 A CN107002390 A CN 107002390A CN 201580065189 A CN201580065189 A CN 201580065189A CN 107002390 A CN107002390 A CN 107002390A
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- China
- Prior art keywords
- work
- engineering machinery
- hydraulic circuit
- pump
- control device
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2257—Vehicle levelling or suspension systems
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
- F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6658—Control using different modes, e.g. four-quadrant-operation, working mode and transportation mode
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7058—Rotary output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of hydraulic circuit control device of engineering machinery.The hydraulic circuit control device of engineering machinery according to embodiments of the present invention, when requiring traveling and operation at the same time, apparatus for work provides the flow of the first pump forward earlier, so as to which the time point of the actual start-up operation of preceding apparatus for work is shifted to an earlier date.In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the valve element of control valve (20) is controlled according to control figure, impacted so as to relax caused by travel speed deceleration.
Description
Technical field
The present invention relates to a kind of hydraulic circuit control device of engineering machinery, more particularly to it is a kind of perform at the same time traveling with
During preceding operation, the hydraulic circuit control device of the engineering machinery of impact caused by changes in flow rate can be relaxed.
Background technology
Generally, engineering machinery possesses circuit apparatus for hydraulic and apparatus for work.Circuit apparatus for hydraulic includes operating portion, control
Valve, pump and driver and constitute.By taking the excavator in engineering machinery as an example, apparatus for work has boom structure, bucket rod structure, scraper bowl
Structure and can screening device.
Operating portion, which has, possesses control stick, pedal in driver's seat etc..Main control control valve is by the operation displacement of control stick
Corresponding flow is supplied to corresponding driver.Pump can be provided with the first pump and the second pump, and working oil is formed after pressure
It is supplied to main control control valve.The working oil provided makes driver work, so that apparatus for work works.
On the one hand, driver has the left driving motor and right travel motor for traveling, has for the dynamic of preceding operation
Arm cylinder, dipper cylinder, scraper bowl cylinder and optional cylinder, there is the oscillating motor for rotating portion of upper body.
On the other hand, engineering machinery can select driving mode and work pattern.If selecting driving mode, straight trip row is improved
Sail performance；If selecting work pattern, transaction capabilities are prior to driving performance.
In addition, when it is desirable that mutually switching between driving mode and work pattern, valve can be manipulated by and switched over.
However, the problems of existing circuit apparatus for hydraulic is, when operation control valve, the runner of working oil has can
Energy meeting suddenly change, so as to cause each travel speed to be slowed down suddenly, impacts.That is, wanted when during traveling straight trip is performed
Before asking during apparatus for work work, it may occur that impact.
In addition, problem present in existing circuit apparatus for hydraulic is after operating control valve, preceding operation is delayed
Slowly.Illustrate by way of parenthesis, the problems of be, during traveling straight trip is performed, as operating personnel to perform desired make
During industry manipulation bar, the time meeting at time point to the corresponding driver substantive time point started working of manipulation bar
It is elongated.That is, the problems of be, when perform traveling straight trip during require before apparatus for work work when, delay before operation
Device works.
Prior art literature
(patent document 1) Korean Patent Laid the 10-2003-0008069th (2003.01.24)
(patent document 2) Korean Patent Laid the 10-2005-0066041st (2005.06.30)
The content of the invention
Technical problem
Therefore, present invention seek to address that technical task purpose be provide one kind can eliminate perform traveling straight trip
The hydraulic circuit control device of the engineering machinery of the impact occurred before period requires during apparatus for work work.
It can shorten the operation dress before being required during performing traveling straight trip it is another object of the present invention to provide one kind
The hydraulic circuit control device of the engineering machinery of the time of the delays in work of apparatus for work before when putting work.
Technical scheme
To reach above-mentioned technical task, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention includes：
First pump 11 and the second pump 12；First running motor 41, it receives the flow discharged by first pump 11；Second running motor
42, it receives the flow discharged by second pump 12；Preceding apparatus for work 50, it receives by the pump 12 of the first pump 11 or second
The flow of discharge；Control valve 20, it is arranged at the stream between the pump 12 of the first pump 11 and second and the preceding apparatus for work 50
Road；Control stick 110, it generates the first operation signal for making the preceding apparatus for work 50 work；Travel board 120, it is given birth to
Into for making the second operation signal of the running motor 42 of the first running motor 41 and second work；And control unit 400, if
First operation signal and second operation signal are in input, then the control unit 400 is calculated based on control figure and is used for
The controlling value of the control valve 20 is controlled, and the controlling value is exported to the control valve 20.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, when the control valve 20 is controlled
When processed, the flow discharged by second pump 12 can be supplied to first running motor 41.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the control valve 20 can make
The flow discharged by first pump 11 and the flow discharged by second pump 12 conflux.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the preceding apparatus for work 50 can
With including：Swing arm cylinder, dipper cylinder and scraper bowl cylinder.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the controlling value of the control figure
Can necessarily it be tilted in the job requirement time point t0 of the preceding apparatus for work 50 to spool displacement is maximum time point t2
Degree change.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be with the preceding operation
The job requirement time point t0 of device 50 makes 40% to 80% mode that the spool displacement of the control valve 20 is maximum displacement
Calculate the controlling value.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be with the preceding operation
The job requirement time point t0 of device 50 makes 40% to 65% mode that the spool displacement of the control valve 20 is maximum displacement
Calculate the controlling value.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be with the preceding operation
The job requirement time point t0 of device 50 makes 55% to 75% mode that the spool displacement of the control valve 20 is maximum displacement
Calculate the controlling value.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the controlling value can be in institute
Job requirement time point t0 of apparatus for work 50 to the spool displacement is maximum time point t2 increases before stating.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, the controlling value can be in institute
Before stating job requirement time point t0 of apparatus for work 50 to the spool displacement for maximum time point t2 necessarily to tilt
Spend a changes.
The details of other embodiment are included in embodiment and accompanying drawing.
The effect of invention
The hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be wanted at the same time as constituted above
Seek traveling and apparatus for work provides the flow of the first pump forward earlier during operation, so as to start work by preceding apparatus for work is actual
The time point of work shifts to an earlier date.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, controls the valve element position of control valve
Move and changed with certain gradient, impacted so as to relax caused by travel speed deceleration.
Brief description of the drawings
Fig. 1, Fig. 2 are the figures of the hydraulic circuit for the engineering machinery for illustrating one embodiment of the invention.
Fig. 3 be the engineering machinery for illustrating one embodiment of the invention hydraulic circuit control device in control valve switching
The figure of changes in flow rate.
Fig. 4 is the figure of the hydraulic circuit control method for the engineering machinery for illustrating one embodiment of the invention.
Fig. 5 be the engineering machinery for illustrating one embodiment of the invention hydraulic circuit control device in be used for control control valve
The figure of control figure.
Fig. 6 is the figure of the action effect of the hydraulic circuit control device for the engineering machinery for illustrating one embodiment of the invention.
Symbol description
11st, the pumps of 12- first, the second pump, 20- control valves, 31, the control valves of 32- first, the second control valve, 41- first travels
Apparatus for work before motor, the running motors of 42- second, 50-, 51, the first drivers of 52- group, the second driver group, 100- input
Portion, 110- control sticks, 120- travel boards, 200- processing units, 210- judging parts, 220- control figures, 300- output sections, 400- controls
Portion processed.
Embodiment
Advantages of the present invention, feature and the method for reaching it, by with reference to the embodiment being described in detail below in conjunction with accompanying drawing
During be made apparent from.
Embodiments of the invention are described in detail with reference to the accompanying drawings.It is understood that the implementation illustrated below
Example is only the exemplary description for ease of understanding the present invention and making, can be with the various changes different from embodiment described herein as
Type implements the present invention.But, during the explanation present invention is judged to related known function or inscape specifically
The bright purport for redundantly making the present invention is omitted the detailed description and is specifically illustrating when not knowing.In addition, for ease of the reason of invention
Solution, accompanying drawing is not illustrated by actual ratio, and the size of part inscape can be illustrated turgidly.
On the one hand, term described later is the term for considering the function in the present invention and setting, it is possible to can be because the producer's
Be intended to or convention and it is different, its definition should be defined based on the content through this specification.
Refer to identical inscape through the same reference numeral of specification full text.
Illustrate the hydraulic circuit control device of the engineering machinery of one embodiment of the invention referring to Fig. 1, Fig. 2.In accompanying drawing
Fig. 1, Fig. 2 are the figures of the hydraulic circuit for the engineering machinery for illustrating one embodiment of the invention.
As shown in Figure 1 and Figure 2, the hydraulic control device of the engineering machinery of one embodiment of the invention can include：First pump 11
With the second pump 12, control valve 20, main control valve and various drivers.
First pump 11 and the second pump 12 are discharged to working oil formation pressure.
Control valve 20 is configured between the first pump 11 and the second pump 12 and main control valve, and it is determined by the first pump 11 and the second pump
The flow direction of the working oil of 12 discharges.
Various drivers can include：First running motor 41, the second running motor 42 and preceding apparatus for work 50.
Above-mentioned preceding apparatus for work 50 can include：Swing arm cylinder, dipper cylinder and scraper bowl cylinder.More specifically, preceding apparatus for work
50 can divide into the first driver group 51 and the second driver group 52.
First driver group 51 can also include：The inner casing of dipper two, the inner casing of swing arm one and scraper bowl cylinder.On the one hand, first drive
Dynamic device group 51 can also include can screening device.
Second driver group 52 can include：The inner casing of dipper one, the inner casing of swing arm two and oscillating motor.On the one hand, second drive
Dynamic device group 52 also can also can screening device including other.
Control valve 20 can be two four mouthfuls of valves.
When the valve element of control valve 20 is in first position, as shown in figure 1, the working oil discharged by the first pump 11 is provided
To the first running motor 41 and the first driver group 51.In addition, the working oil discharged by the second pump 12 is provided to the second traveling
The driver group 52 of motor 42 and second.
When the valve element of control valve 20 is in the second place, as shown in Fig. 2 the working oil discharged by the first pump 11 is provided
To the first driver group 51 and the second driver group 52.In addition, the working oil discharged by the second pump 12 is provided to the first traveling
The running motor 42 of motor 41 and second.
That is, when the valve element of control valve 20 is switched to the second place, apparatus for work 50 before the first pump 11 is responsible for, second
Pump 12 is responsible for the first running motor 41 and the second running motor 42.So as to improve the straight trip degree travelled during engineering machinery traveling.
Below, reference picture 3 illustrates the flow area change with the spool displacement of control valve 20.Fig. 3 is to illustrate this in accompanying drawing
In the hydraulic circuit control device for the engineering machinery for inventing an embodiment with control valve switching changes in flow rate figure.
The position of the valve element of control valve 20 depends on the size of current value.In addition, being moved with the valve element of control valve 20, work
Make the flow direction of oil and the changes in flow rate of working oil.That is, with spool displacement, flow area change, flow area is wider, flow
More increase；Flow area is narrower, and flow is more reduced.
Control valve 20, which possesses, four ports, so as to form four runners.First port A is connected with the first pump 11.
Second port B is connected with the first control valve 31 for the first running motor 41 of control.3rd port C and the second driver group 52
Connection.4th port D is connected with the second pump 12.
First flow is the runner that second port B is connected to from first port A.Second flow channel is from the 4th port D connections
To the 3rd port C runner.That is, first flow and second flow channel are construed as control valve 20 and are in closing (off) shape
Runner during state.
Third flow channel is the runner that the 3rd port C is connected to from first port A.4th runner is from the 4th port D connections
To second port B runner.That is, third flow channel and the 4th runner are construed as control valve 20 and are in (on) state of unlatching
When runner.
Fig. 3 shows first flow, third flow channel, the flow area line chart of the 4th runner, is therefrom appreciated that each runner
Flow be how with control valve 20 spool displacement change and change.
On the one hand, as shown in figure 4, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention can include
Input unit 100, control unit 400.In addition, control unit 400 can include processing unit 200 and enforcement division 300.
Fig. 4 is the figure of the hydraulic circuit control method for the engineering machinery for illustrating one embodiment of the invention in accompanying drawing.
The first operation signal that apparatus for work 50 works before control stick 110 is generated for making.
Travel board 120 generates the second operation letter for making the first running motor 41 and the second running motor 42 work
Number.
The first operation signal that apparatus for work 50 works before being inputted in input unit 100 for making and second for traveling
Operation signal.That is, in input unit 100, one in the first operation signal and the second operation signal is merely entered sometimes, sometimes
Input and input another signal after one of signal again, also the first operation signal, the second operation signal are inputted sometimes.
If the first operation signal and the second operation signal are all inputted, control unit 400 is calculated for controlling control based on control figure
The controlling value of valve 20 processed, and controlling value is exported to control valve 20.
Below, control unit 400 is further described.
When the first operation signal, the second operation signal are all inputted, processing unit 200 is judged as in traveling in judging part 210
Apparatus for work operation before period requires.In addition, processing unit 200 calculates the control for controlling control valve 20 based on control figure 220
Value.
Here, controlling value is construed as to be applied to the current value of control valve 20.That is, if current value is maximum,
The spool displacement of control valve 20 can be maximum.
Output section 300 exports the controlling value calculated by processing unit 200 to control valve 20, so as to control to control by controlling value
Valve 20 processed.
That is, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention is controlled according to control figure
The spool displacement of valve 20, thus before requiring the time point of the work of apparatus for work 50 increase the area of third flow channel, with to
Preceding apparatus for work 50 provides the partial discharge of the second pump 12.It is thus possible to the time that the preceding reality of apparatus for work 50 is started working
Point shifts to an earlier date.
In addition, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, is controlled according to control figure
The spool displacement of valve 20, so as to control when the area of first flow increases proportional reduction to the area of third flow channel,
The ratio of the reduction is set to be reduced with slow speed.It is thus possible to prevent travel speed from slowing down suddenly, to prevent impact.
On the one hand, when controlling the control valve 20, the flow discharged by second pump 12 can be supplied to described
First running motor 41.So as to which the second pump 12 not only can provide flow to the second running motor 42, can also be to the first traveling
Motor 41 provides flow, especially can provide flow to the first running motor 41, the second running motor 42 simultaneously, improve straight trip
Driving performance.
On the other hand, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention can be with preceding operation dress
Putting 50 job requirement time point t0 makes the spool displacement of control valve 20 calculate control for 40% to 80% mode of maximum displacement
Value processed.
If as described above, the spool displacement of control valve 20 is more than the 40% of maximum displacement, by third flow channel forward
When apparatus for work 50 provides the part delivery flow of the second pump 12, good flow can be provided, preceding work can be realized glibly
The work of industry device.
If in addition, the spool displacement of control valve 20 is less than the 80% of maximum displacement, being continued by first flow to the
One running motor 41 provides working oil, so as to prevent the travel speed of engineering machinery from drastically reducing.
Another aspect, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be with preceding operation
The job requirement time point t0 of device 50 makes the spool displacement of control valve 20 be calculated for 40% to 65% mode of maximum displacement
Controlling value.It is thus possible to which apparatus for work 50 works before making in the optimum range of the operating rate of apparatus for work before not slowing down 50.
Another aspect, the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, can be with preceding operation
The job requirement time point t0 of device 50 makes the spool displacement of control valve 20 be calculated for 55% to 75% mode of maximum displacement
The controlling value.Here, if the spool displacement of control valve 20 is more than the 55% of maximum displacement, raising working rig can be adjusted
Speed.On the one hand, if the spool displacement of control valve 20 is less than the 75% of maximum displacement, can adjust subtracts low running speed
Speed.
Illustrate control figure referring to Fig. 5.Fig. 5 is the hydraulic pressure of the engineering machinery of an embodiment to illustrate the invention in accompanying drawing
It is used for the figure for controlling the control figure of control valve in circuit control device.
In the hydraulic circuit control device of engineering machinery according to embodiments of the present invention, controlling value can be in preceding apparatus for work
50 job requirement time point t0 to time point t2 of the spool displacement for maximum is changed with defined gradient a.It is thus possible to anti-
Drastically change when only the spool displacement of control valve 20 becomes maximum displacement, and then the travel speed of engineering machinery can be controlled slow
Reduce.
Gradient a as defined in above-mentioned can first by manufacturer set after dispatch from the factory delivery, can also reset according to demand.
Below, step does not illustrate the hydraulic circuit control method of engineering machinery according to embodiments of the present invention.
Input step is inputted for the first operation signal of the work of apparatus for work 50 before making or second for traveling
The step of operation signal.That is, when merely entering the second operation signal, it can be determined that to only carry out traveling, if but inputting the
When inputting the first operation signal in the case of two operation signals, it can be determined that to attempt apparatus for work work before making in the process of moving
Make.
In addition, when in order that during desired driver operation control stick 110, pilot pressure can be produced.It therefore, it can
Based on whether forming pilot pressure on guide line to judge whether to input the first operation signal.If in addition, for the purpose of traveling
Travel board 120 is slammed, the second operation signal can be generated.(on/off) state can be opened/close based on control valve 20 to learn
This second operation signal.
Calculation procedure is to determine whether the first operation signal and the second operation signal in the situation of input, if judging
To input the first operation signal, the situation of the second operation signal simultaneously, then the controlling value of control valve 20 is calculated based on control figure
Step.That is, when being judged as apparatus for work work before making in the process of moving, the valve element of control valve 20 is controlled, changes first
Runner, second flow channel, third flow channel, the area of the 4th runner.It is thus possible to increase apparatus for work forward at specific time point
50 flows provided.Wherein, specific time point is the time point t0 of the work of apparatus for work before being required during travelling.
Performing step is, the step of controlling control valve 20 according to the controlling value calculated in calculation procedure.So as to control valve 20
Specific displacement can be realized at each specific time point.
Therefore, the hydraulic circuit control method of engineering machinery according to embodiments of the present invention, is controlled according to control figure
The spool displacement of valve 20, so as to the time point t0 offers of apparatus for work 50 second forward that apparatus for work 50 works before requiring
The partial discharge of pump 12.It is thus possible to which the actual time point t1 started working of preceding apparatus for work 50 is shifted to an earlier date.
In addition, the hydraulic circuit control method of engineering machinery according to embodiments of the present invention, is controlled according to control figure
The spool displacement of valve 20, should during so as to control the area of first flow to increase proportional reduction to the area of third flow channel
The ratio of reduction is reduced with slow speed.It is thus possible to prevent travel speed from slowing down suddenly, to prevent impact.
On the one hand, the hydraulic circuit control method of engineering machinery according to embodiments of the present invention, can set controlling value
For, the job requirement time point t0 of preceding apparatus for work 50 make the spool displacement of control valve 20 for maximum displacement 50% to
70%.
So as to when by third flow channel, apparatus for work 50 provides the part delivery flow of the second pump 12 forward, provide
Good flow, so as to the work of apparatus for work before realizing glibly, and is continued to the first traveling electricity by first flow
Machine 41 provides working oil, so as to prevent the travel speed of engineering machinery from drastically reducing.
On the other hand, the hydraulic circuit control method of engineering machinery according to embodiments of the present invention, controlling value can be preceding
The job requirement time point t0 of apparatus for work 50 to time point t2 of the spool displacement for maximum is changed with certain gradient a.
It is thus possible to drastically change when preventing the spool displacement of control valve 20 from becoming maximum displacement, and then work can be controlled
The travel speed of journey machinery is slowly reduced.
Below, reference picture 6 illustrates the action effect of the hydraulic circuit control device of the engineering machinery of the embodiment of the present invention.It is attached
Fig. 6 is the figure of the action effect of the hydraulic circuit control device for the engineering machinery for illustrating one embodiment of the invention in figure.
According to embodiment 1, spool displacement preceding apparatus for work 50 job requirement time point t0 to spool displacement be maximum
Time point t2 gradually increase.In the flow discharged by the first pump 11, maximum stream flow is distributed to the first running motor 41, and almost
Apparatus for work 50 is not distributed forward.In the flow discharged by the second pump 12, maximum stream flow is distributed to the second running motor 42, and it is several
Do not distributed to the first running motor 41.
Hereafter, the valve element movement of control valve 20, spool displacement increases to the journey of the work of apparatus for work 50 before can starting
Degree.That is, the attack time point t1 of preceding apparatus for work 50 is in the job requirement time point t0 delays from preceding apparatus for work 50
After stipulated time.
On the one hand, according to embodiment 1, the time point t1 started in the work of preceding apparatus for work 50 is discharged by the first pump 11
Flow in, distribute to the flow of the first running motor 41 and reduce, with the flow of the reduction accordingly, distribution to preceding apparatus for work
50 flow increase.In addition, in the flow discharged by the second pump 12, distributing to the flow of the second running motor 42 and reducing, with this
The flow of reduction accordingly, is distributed to the flow increase of the first running motor 41.
Therefore, according to embodiment 1, although the attack time point t1 of preceding apparatus for work 50 is maximum to spool displacement
Time point t2 time is short, as flow drastically changes, if apparatus for work 50 works before making in the process of moving, it is possible to can send out
Raw impact.
In contrast, embodiments in accordance with the present invention 2, in the job requirement time point t0 of preceding apparatus for work 50, valve element position
Shifting starts from beginning displacement.Start the position that displacement can be valve element to have moved with respect to the initial displacement of embodiment 1 more
Displacement.In addition, spool displacement is gradually increased to maximum displacement from displacement is started.
From the job requirement time point t0 of preceding apparatus for work 50, in the flow discharged by the first pump 11, distribution to first
The flow of running motor 41 is gradually decreased, with the flow of the reduction accordingly, is distributed to the flow increase of preceding apparatus for work 50.By
In the flow of second pump 12 discharge, distribute to the flow of the second running motor 42 and gradually decrease, with the flow of the reduction accordingly,
Distribute to the flow increase of the first running motor 41.
That is, the hydraulic circuit control device of according to embodiments of the present invention 2 engineering machinery is required when in the process of moving
During the work of preceding apparatus for work 50, the flow discharged by the first pump 11 can be provided to preceding apparatus for work 50, so as to incite somebody to action
The time point t1 of the work of apparatus for work 50 shifts to an earlier date before actually starting.Therefore, the attack time point t1 of preceding apparatus for work 50
Can be and the job requirement time point t0 identical time points of preceding apparatus for work 50 or the time point being very close to therewith.
On the one hand, the hydraulic circuit control device of according to embodiments of the present invention 2 engineering machinery, the work of preceding apparatus for work 50
Make the time required to sart point in time t1 is maximum time point t2 to spool displacement to be relative to the longer time of embodiment 1.By
Change in flow within the relatively long time, thus changes in flow rate can be slow, and then can prevent travel speed from drastically subtracting
It is few.
As described above, the hydraulic circuit control device of according to embodiments of the present invention 2 engineering machinery, can be set to simultaneously
It is required that the spool displacement for making control valve 20 when traveling and operation is the 40% to 80% of maximum displacement, so as to which preceding operation is filled
The time point for putting actual start-up operation shifts to an earlier date.
In addition, the hydraulic circuit control device of according to embodiments of the present invention 2 engineering machinery, controls the valve element of control valve 20
Displacement is changed with certain gradient a, is impacted so as to relax caused by travel speed deceleration.
Although embodiments of the invention are illustrated above with reference to accompanying drawing, the technical field of the invention it is general
Technical staff be appreciated that do not change the present invention technological thought or Essential features on the premise of, can be with other specific shapes
State implements the present invention.
It is understood, therefore, that embodiments described above is exemplary description in every respect, and it is non-limiting
Description, the scope of the present invention is embodied by claim described later, is exported from the meaning of claim, scope and its equivalent concept
Have altered or modification form all should be interpreted as including within the scope of the invention.
The possibility industrially applied
The hydraulic circuit control device of engineering machinery according to embodiments of the present invention can be used for preventing from travelling in engineering machinery
Period is operated so as to postpone the attack time point of preceding apparatus for work when preceding apparatus for work is moved.
Claims (10)
1. a kind of hydraulic circuit control device of engineering machinery, it is characterised in that including：
First pump (11) and the second pump (12)；
First running motor (41), it receives the flow discharged by first pump (11)；
Second running motor (42), it receives the flow discharged by second pump (12)；
Preceding apparatus for work (50), it receives the flow discharged by first pump (11) or the second pump (12)；
Control valve (20), it is arranged between first pump (11) and second pump (12) and the preceding apparatus for work (50)
Runner；
Control stick (110), it is generated for making the first operation signal of preceding apparatus for work (50) work；
Travel board (120), it is generated for making first running motor (41) and second running motor (42) work
The second operation signal；And
Control unit (400), if first operation signal and second operation signal are in input, the control unit
(400) calculated based on control figure for controlling the controlling value of the control valve (20), and the controlling value is exported to the control
Valve (20) processed.
2. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
When the control valve (20) is controlled, the flow discharged by second pump (12) is supplied to the first traveling electricity
Machine (41).
3. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that including：
The control valve (20) makes the flow discharged by first pump (11) and converged by the flow that second pump (12) is discharged
Stream.
4. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
The preceding apparatus for work (50) includes：Swing arm cylinder, dipper cylinder and scraper bowl cylinder.
5. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
The controlling value of the control figure is most in job requirement time point (t0) to the spool displacement of the preceding apparatus for work (50)
Big time point (t2) is changed with certain gradient.
6. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
The spool displacement of the control valve (20) is made as most using the job requirement time point (t0) in the preceding apparatus for work (50)
The mode of the 40% to 80% of big displacement calculates the controlling value.
7. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
The spool displacement of the control valve (20) is made as most using the job requirement time point (t0) in the preceding apparatus for work (50)
The mode of the 40% to 65% of big displacement calculates the controlling value.
8. the hydraulic circuit control device of engineering machinery according to claim 1, it is characterised in that
The spool displacement of the control valve (20) is made as most using the job requirement time point (t0) in the preceding apparatus for work (50)
The mode of the 55% to 75% of big displacement calculates the controlling value.
9. the hydraulic circuit control device of the engineering machinery according to claim 1 or 6, it is characterised in that
The controlling value is most in the job requirement time point (t0) to the spool displacement of the preceding apparatus for work (50)
Big time point (t2) increase.
10. the hydraulic circuit control device of engineering machinery according to claim 6, it is characterised in that
The controlling value is most in the job requirement time point (t0) to the spool displacement of the preceding apparatus for work (50)
Big time point (t2) is changed with certain gradient (a).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0162836 | 2014-11-20 | ||
| KR20140162836 | 2014-11-20 | ||
| PCT/KR2015/012417 WO2016080760A1 (en) | 2014-11-20 | 2015-11-18 | Apparatus for controlling hydraulic circuit of construction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107002390A true CN107002390A (en) | 2017-08-01 |
Family
ID=56014211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580065189.5A Pending CN107002390A (en) | 2014-11-20 | 2015-11-18 | The hydraulic circuit control device of engineering machinery |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3222784A4 (en) |
| KR (1) | KR102088091B1 (en) |
| CN (1) | CN107002390A (en) |
| WO (1) | WO2016080760A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102255A (en) * | 2018-10-29 | 2020-05-05 | 斗山英维高株式会社 | Travel control system for construction machine and travel control method for construction machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691492B (en) * | 2020-06-30 | 2022-06-28 | 徐州徐工挖掘机械有限公司 | Hydraulic system of excavator and excavator |
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|---|---|---|---|---|
| US4345436A (en) * | 1980-04-07 | 1982-08-24 | Caterpillar Tractor Co. | Control for load sharing pumps |
| EP0722018A1 (en) * | 1995-01-11 | 1996-07-17 | Shin Caterpillar Mitsubishi Ltd. | Apparatus for controlling the working and travelling operations of a construction machine |
| EP1146175A1 (en) * | 2000-04-13 | 2001-10-17 | Kobelco Construction Machinery Co., Ltd. | Construction machine with simultaneous rotating and arm pulling operation |
| CN101024967A (en) * | 2006-02-20 | 2007-08-29 | 神钢建设机械株式会社 | Hydraulic controlling device of working machine |
| CN101278131A (en) * | 2005-09-30 | 2008-10-01 | 卡特彼勒公司 | Multi-pump control system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797315B1 (en) | 2001-07-16 | 2008-01-23 | 두산인프라코어 주식회사 | Hydraulic apparatus for controlling complex work mode of travel and front works |
| KR100988429B1 (en) | 2003-12-26 | 2010-10-18 | 두산인프라코어 주식회사 | Apparatus for controlling multiple operations of an excavator |
| KR101470626B1 (en) * | 2007-12-27 | 2014-12-09 | 두산인프라코어 주식회사 | Electric oil pressure system of construction equipment |
| US20130276441A1 (en) * | 2010-12-27 | 2013-10-24 | Volvo Construction Equipment Ab | Hydraulic pump for construction machinery |
| US8838349B2 (en) * | 2010-12-27 | 2014-09-16 | Volvo Construction Equipment Ab | Drive control system for construction machinery |
| JP5927302B2 (en) * | 2011-10-07 | 2016-06-01 | ボルボ コンストラクション イクイップメント アーベー | Priority control system for construction machinery |
-
2015
- 2015-11-18 KR KR1020177016343A patent/KR102088091B1/en active IP Right Grant
- 2015-11-18 EP EP15861005.5A patent/EP3222784A4/en not_active Withdrawn
- 2015-11-18 CN CN201580065189.5A patent/CN107002390A/en active Pending
- 2015-11-18 WO PCT/KR2015/012417 patent/WO2016080760A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345436A (en) * | 1980-04-07 | 1982-08-24 | Caterpillar Tractor Co. | Control for load sharing pumps |
| EP0722018A1 (en) * | 1995-01-11 | 1996-07-17 | Shin Caterpillar Mitsubishi Ltd. | Apparatus for controlling the working and travelling operations of a construction machine |
| EP1146175A1 (en) * | 2000-04-13 | 2001-10-17 | Kobelco Construction Machinery Co., Ltd. | Construction machine with simultaneous rotating and arm pulling operation |
| JP2001295804A (en) * | 2000-04-13 | 2001-10-26 | Kobelco Contstruction Machinery Ltd | Hydraulic control circuit for construction machine |
| CN101278131A (en) * | 2005-09-30 | 2008-10-01 | 卡特彼勒公司 | Multi-pump control system and method |
| CN101024967A (en) * | 2006-02-20 | 2007-08-29 | 神钢建设机械株式会社 | Hydraulic controlling device of working machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102255A (en) * | 2018-10-29 | 2020-05-05 | 斗山英维高株式会社 | Travel control system for construction machine and travel control method for construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3222784A1 (en) | 2017-09-27 |
| KR20170091115A (en) | 2017-08-08 |
| EP3222784A4 (en) | 2018-08-01 |
| WO2016080760A1 (en) | 2016-05-26 |
| KR102088091B1 (en) | 2020-04-28 |
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Application publication date: 20170801 |