CN109058194A - The hydraulic control system and its control method and Work machine of job execution mechanism - Google Patents
The hydraulic control system and its control method and Work machine of job execution mechanism Download PDFInfo
- Publication number
- CN109058194A CN109058194A CN201811183491.2A CN201811183491A CN109058194A CN 109058194 A CN109058194 A CN 109058194A CN 201811183491 A CN201811183491 A CN 201811183491A CN 109058194 A CN109058194 A CN 109058194A
- Authority
- CN
- China
- Prior art keywords
- valve
- slide valve
- electromagnetic switch
- hydraulic
- liquid controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 112
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 181
- 239000003921 oil Substances 0.000 claims description 123
- 238000006073 displacement reaction Methods 0.000 claims description 53
- 239000002828 fuel tank Substances 0.000 claims description 33
- 210000000245 forearm Anatomy 0.000 claims description 20
- 238000000605 extraction Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 9
- 239000010729 system oil Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 17
- 230000009123 feedback regulation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
- E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like
-
- 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
-
- 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
- E02F9/26—Indicating devices
- E02F9/264—Sensors and their calibration for indicating the position of the work tool
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses the hydraulic control system and its control method and Work machine of a kind of job execution mechanism.Hydraulic control system includes: the multiple fluid pressure drive devices being correspondingly arranged with multiple executive items of job execution mechanism；Hydraulic pump；The hydraulic valve bank being connected between hydraulic pump and multiple fluid pressure drive devices；For measuring the measuring device of the posture of job execution mechanism；The control device being connect with measuring device and hydraulic valve bank signal, control device is configured as: being less than the work requirements flow summation of multiple fluid pressure drive devices in the flow that hydraulic pump provides hydraulic oil, and when more than two fluid pressure drive device is in running order in multiple fluid pressure drive devices, control device selects and adjusts the hydraulic oil distribution of hydraulic pump according to the measurement result of measuring device to the assignment of traffic mode of multiple fluid pressure drive devices and correspondingly controls hydraulic valve bank.The hydraulic control system can select suitable assignment of traffic mode according to the posture of job execution mechanism.
Description
Technical field
The present invention relates to technical field of hydraulic, in particular to the hydraulic control system of a kind of job execution mechanism and its
Control method and Work machine.
Background technique
The application scenarios of Work machine are more, have wide range of applications, such as multifunctional rescue vehicle, are mainly used in earthquake, collapse
Rescue operation is carried out when the natural calamities such as side, landslide, mud-rock flow occur.The many uses of job execution mechanism of Work machine
Hydraulic control, such as the job execution mechanism of loading machine, the digging arm of multifunctional rescue vehicle etc., digging arm is as multifunctional rescue
The main executing agency of vehicle, structure include large arm, forearm, scraper bowl and other related accessories, pass through big arm cylinder, forearm respectively
Oil cylinder, bucket cylinder driving.Hydraulic system passes through main valve for hydraulic oil distribution to each hydraulic cylinder, and digging arm passes through Driven by Hydraulic Cylinder
Complete single or composite move.Wherein hydraulic system and control mode are the cores of digging arm, are directly related to answering for digging arm
Close harmony, handling, response speed and working efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic control systems of job execution mechanism, using the job execution mechanism
Hydraulic control system, hydraulic pump provide hydraulic oil flow be less than job execution mechanism multiple executive items work need
When seeking flow summation, hydraulic control system can be that multiple executive items select suitable flow according to the posture of job execution mechanism
Allocation model, to improve the coordination of the multiple executive items of job execution mechanism or meet the movement of job execution mechanism
Priority requirement.
The present invention simultaneously also provides the Work machine and the hydraulic control system of a kind of application hydraulic control system
Control method.
First aspect present invention discloses a kind of hydraulic control system of job execution mechanism, and the job execution mechanism includes
Multiple executive items interconnected, the hydraulic control system include:
Multiple fluid pressure drive devices are correspondingly arranged with the multiple executive item, and each fluid pressure drive device is for driving
The corresponding executive item movement；
Hydraulic pump, for providing hydraulic oil to the multiple fluid pressure drive device；
Hydraulic valve bank is connected between the hydraulic pump and the multiple fluid pressure drive device, described hydraulic for adjusting
Pump inputs the pressure and flow of the multiple fluid pressure drive device hydraulic oil；
Measuring device, the posture for measuring the job execution mechanism form measurement result；
Control device is connect with the measuring device and the hydraulic valve bank signal, and the control device is configured as:
The flow that the hydraulic pump provides hydraulic oil is less than the work requirements flow summation of the multiple fluid pressure drive device, and described more
When two or more fluid pressure drive device is in running order in a fluid pressure drive device, according to the measurement of the measuring device
As a result the hydraulic oil distribution of the hydraulic pump is selected and adjusts to the assignment of traffic mode and phase of the multiple fluid pressure drive device
Control the hydraulic valve bank with answering.
Further, the measuring device measures the job execution mechanism by measuring the movement of the multiple executive item
Posture.
Further, the measuring device includes: the displacement sensor for measuring the displacement of the fluid pressure drive device
And/or the angular transducer of the angle for measuring the fluid pressure drive device.
Further, the multiple fluid pressure drive device includes multiple hydraulic cylinders.
Further, the assignment of traffic mode includes flow mode of priority, flow equal proportion drop mode, equivalent reduction
Mode or specified reduction mode.
Further, the hydraulic valve bank includes that the flow area that is correspondingly arranged with the multiple fluid pressure drive device is adjustable
Whole multiple valve modules, each valve module are connected between the corresponding fluid pressure drive device and the hydraulic pump, the control
Device is connect to adjust the flow area of each valve module with the multiple valve module signal.
Further, the valve module includes reversing slide valve, and the control device controls the reversing slide valve spool sliding
Displacement.
Further, the hydraulic control system includes that the displacement of the displacement for detecting the spool of the reversing slide valve passes
Sensor, institute's displacement sensors are connect with the control device signal.
Further, the fluid pressure drive device includes the first oil pocket and the second oil pocket, and the valve module includes for connecting
Lead to the first oil pocket of corresponding fluid pressure drive device to control the first oil pocket into the first reversing slide valve component of oil extraction and for connecting
Lead to the second oil pocket of corresponding fluid pressure drive device and control the second oil pocket into oil extraction the second reversing slide valve component.
Further, the hydraulic control system further include for the hydraulic control system oil return and with the hydraulic pump
The fuel tank of connection, the first reversing slide valve component and/or the second reversing slide valve component include:
First liquid controlled reversing slide valve, the first liquid controlled reversing slide valve include positioned at its spool both ends two hydraulic control mouths with
And with the first valve port of the first liquid controlled reversing slide valve of the correspondence chamber of corresponding fluid pressure drive device, with the hydraulic pump
Second valve port of the first liquid controlled reversing slide valve of oil discharge outlet connection and the first liquid controlled reversing slide valve for being connected to the fuel tank
Third valve port；With
First electromagnetic switch slide valve, the first electromagnetic switch slide valve include two with the first liquid controlled reversing slide valve
First valve port of one of them the first connected electromagnetic switch slide valve of hydraulic control mouth is connected with another in described two hydraulic control mouths
The second valve port of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve being connected to the oil discharge outlet of the hydraulic pump third
4th valve port of valve port and the first electromagnetic switch slide valve being connected to the fuel tank.
Further, the first liquid controlled reversing slide valve has by the first hydraulic control of its described two hydraulic control mouth control switching
First valve position of reversing slide valve, the second valve position of the first liquid controlled reversing slide valve and the first liquid controlled reversing slide valve third valve position,
Under first valve position of the first liquid controlled reversing slide valve, the first valve port of the first liquid controlled reversing slide valve and first hydraulic control
Second valve port of reversing slide valve is connected to, and the third valve port of the first liquid controlled reversing slide valve disconnects；In first liquid controlled reversing
Under second valve position of slide valve, the second valve of the first valve port of the first liquid controlled reversing slide valve, the first liquid controlled reversing slide valve
The third valve port of mouth and the first liquid controlled reversing slide valve disconnects；Under the third valve position of the first liquid controlled reversing slide valve,
First valve port of the first liquid controlled reversing slide valve is connected to the third valve port of the first liquid controlled reversing slide valve, first liquid
The second valve port for controlling reversing slide valve disconnects；
The first electromagnetic switch slide valve has the first valve position of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve
The third valve position of second valve position and the first electromagnetic switch slide valve, it is described under the first valve position of the first electromagnetic switch slide valve
First valve port of the first electromagnetic switch slide valve is connected to the third valve port of the first electromagnetic switch slide valve, and first electromagnetism changes
It is connected to the second valve port of slide valve with the 4th valve port of the first electromagnetic switch slide valve；In the first electromagnetic switch slide valve
Under second valve position, the second valve port of the first valve port of the first electromagnetic switch slide valve and the first electromagnetic switch slide valve and with oil
4th valve port three of the first electromagnetic switch slide valve of case connection is homogeneously intercommunicated, the third valve of the first electromagnetic switch slide valve
Mouth disconnects；Under the third valve position of the first electromagnetic switch slide valve, the second valve port of the first electromagnetic switch slide valve and institute
State the third valve port connection of the first electromagnetic switch slide valve, the first valve port of the first electromagnetic switch slide valve and first electromagnetism
4th valve port of reversing slide valve is connected to.
Further, it is additionally provided between the third valve port of the first electromagnetic switch slide valve and the oil discharge outlet of the hydraulic pump
Pressure reducing valve.
Further, the hydraulic pump is variable pump, the oil discharge outlet of the stroking mechanism of the variable pump and the variable pump
Between be also connected with load feedback valve, the hydraulic oil when load feedback valve is for by hydraulic pump works introduces the variable machine
The discharge capacity of the variable pump is adjusted in structure.
Further, the load feedback valve includes the second liquid controlled reversing slide valve and the second electromagnetic switch slide valve, and described the
Two liquid controlled reversing slide valves include positioned at two sides for controlling two mobile hydraulic control mouths of its spool, and second liquid controlled reversing is sliding
Valve further includes the first valve port of the second liquid controlled reversing slide valve being connected to the stroking mechanism, the oil discharge outlet company with the hydraulic pump
The third valve port of second valve port of the second logical liquid controlled reversing slide valve and the second liquid controlled reversing slide valve being connected to the fuel tank；
The second electromagnetic switch slide valve includes that one of them is connected with two hydraulic control mouths of the second liquid controlled reversing slide valve
First valve port of the second electromagnetic switch slide valve, with another second electromagnetic switch slide valve being connected in described two hydraulic control mouths
Second valve port, the second electromagnetic switch slide valve being connected to the oil discharge outlet of the hydraulic pump third valve port and with the fuel tank connect
4th valve port of the second logical electromagnetic switch slide valve.
Further, the second liquid controlled reversing slide valve has the second liquid controlled reversing by hydraulic control mouth control switching sliding
First valve position of valve, the second liquid controlled reversing slide valve the second valve position, under the first valve position of the second liquid controlled reversing slide valve, institute
State the first valve port of the second liquid controlled reversing slide valve, the second valve port of the second liquid controlled reversing slide valve, second liquid controlled reversing
The third valve port of slide valve is connected to；Under the second valve position of the second liquid controlled reversing slide valve, the second liquid controlled reversing slide valve
The first valve port be connected to the second valve port of the second liquid controlled reversing slide valve, the third valve port of the second liquid controlled reversing slide valve
It disconnects；
The second electromagnetic switch slide valve has the first valve position of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve
The third valve position of second valve position and the second electromagnetic switch slide valve, it is described under the first valve position of the second electromagnetic switch slide valve
First valve port of the second electromagnetic switch slide valve is connected to the third valve port of the second electromagnetic switch slide valve, and second electromagnetism changes
It is connected to the second valve port of slide valve with the 4th valve port of the second electromagnetic switch slide valve；In the second electromagnetic switch slide valve
Under second valve position, the first valve port of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve the second valve port and with oil
4th valve port three of the second electromagnetic switch slide valve of case connection is homogeneously intercommunicated, the third valve of the second electromagnetic switch slide valve
Mouth disconnects；Under the third valve position of the second electromagnetic switch slide valve, the second valve port of the second electromagnetic switch slide valve and institute
State the third valve port connection of the second electromagnetic switch slide valve, the first valve port of the second electromagnetic switch slide valve and second electromagnetism
4th valve port of reversing slide valve is connected to.
Further, the tilt angle for detecting the variable swash plate is additionally provided on the variable swash plate of the variable pump
Angular transducer, the angular transducer are connect so that the result is output to the control and is filled with the control device signal
It sets.
Further, the hydraulic control system further includes the first oil pocket for detecting the fluid pressure drive device or institute
State the flow detector of the second oil pocket of fluid pressure drive device.
Further, the flow detector includes the first oil pocket or the second oil pocket for detecting fluid pressure drive device
Hydraulic oil pressure first pressure sensor and for detecting the hydraulic pump oil discharge outlet discharge hydraulic oil pressure
Second pressure sensor.
Further, the job execution mechanism includes digging arm, and the multiple executive item includes and supports the operation
The hinged large arm of the body of executing agency and the hinged forearm of the large arm and the scraper bowl hinged with the forearm.
Second aspect of the present invention discloses a kind of Work machine, and the Work machine includes job execution mechanism and the present invention the
On the one hand the hydraulic control system of described in any item job execution mechanisms.
Third aspect present invention discloses a kind of hydraulic control system of job execution mechanism according to a first aspect of the present invention
Control method,
The control method includes:
Step S1, the posture for measuring the job execution mechanism form measurement result；
Step S2, judges whether the flow of the hydraulic pump offer hydraulic oil is less than the work of the multiple fluid pressure drive device
Make demand volume summation and judges whether more than two fluid pressure drive devices are in work in the multiple fluid pressure drive device
State；
Step S3, if the judging result in the step S2 is to be, according to the measurement result of step S1 acquisition
Select the hydraulic oil distribution of the hydraulic pump to the flow of multiple fluid pressure drive devices of the multiple executive item of corresponding control
Allocation model simultaneously correspondingly controls the hydraulic valve bank.
Further, in the step S1, the job execution is measured by measuring the movement of the multiple executive item
The posture of mechanism.
Further, the movement for measuring the multiple executive item include measure the fluid pressure drive device displacement and/or
Measure the angle of the fluid pressure drive device.
Further, the assignment of traffic mode includes flow mode of priority, flow equal proportion drop mode, equivalent reduction
Mode or specified reduction mode.
Further, in the step S3 by control the hydraulic valve bank adjust the hydraulic pump with it is each described hydraulic
Flow area between driving device implements the assignment of traffic mode.
Further, including controlling the reversing slide valve being arranged between the hydraulic pump and each fluid pressure drive device
The displacement of spool.
Further, the step S3 further includes the displacement for detecting the spool of the reversing slide valve, by described in detection
The Displacement Feedback of spool adjusts the displacement of the spool of the reversing slide valve.
Based on the hydraulic control system of job execution mechanism provided by the invention, in the flow for the hydraulic oil that hydraulic pump provides
Less than multiple executive items of job execution mechanism work requirements flow summation when, work that control device is measured according to measuring device
The testing result of the posture of industry executing agency is that the fluid pressure drive device of multiple executive items selects suitable assignment of traffic mode,
So as to improve the coordination of the multiple executive items of job execution mechanism or meet job execution mechanism movement it is excellent
The requirement of elder generation's property.
The control method of the hydraulic control system of Work machine and job execution provided by the invention mechanism is mentioned with the present invention
The hydraulic control system advantage having the same of the job execution mechanism of confession.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the hydraulic control system of the job execution mechanism of one embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
The job execution mechanism of the embodiment of the present invention includes multiple executive items interconnected, and executive item is for executing operation
Operation, such as in excavator, executive item includes the large arm for spading cubic metre of earth and stone material, forearm and scraper bowl.Job execution mechanism
Hydraulic control system include multiple fluid pressure drive devices, hydraulic pump, hydraulic valve bank, measuring device and control device.
Fluid pressure drive device can be hydraulic cylinder, hydraulic motor etc..Multiple fluid pressure drive devices are corresponding with multiple executive items
Setting, for each fluid pressure drive device for driving corresponding executive item to act, i.e., each executive item is both provided with fluid pressure drive device
To drive its movement.
Hydraulic pump is used to provide hydraulic oil to multiple fluid pressure drive devices.
Hydraulic valve bank is connected between hydraulic pump and multiple fluid pressure drive devices, multiple hydraulic for adjusting hydraulic pump input
The pressure and flow of the hydraulic oil of driving device.Hydraulic valve bank includes some valve modules, by the connection for controlling each valve module
With closure etc. movement, to realize that hydraulic pump is pumped into the pressure of the hydraulic oil of each fluid pressure drive device and the adjusting of flow.
The posture that measuring device is used to measure job execution mechanism forms measurement result.The posture of job execution mechanism, i.e.,
The form that the respective form for each executive item that job execution mechanism is showed and each executive item are integrally shown jointly.Measurement
Device can be by the movement of each executive item of measurement, to measure the posture of job execution mechanism.For example, measuring device can be with
It is some measurement devices, finally obtains job execution machine by modes such as angle, displacement or the coordinates of each executive item of measurement
The posture of structure, measuring device can also be camera shooting or detection device, then be carried out by the image of shooting operation executing agency
Data processing obtains the position of each executive item and form is finally analyzed and obtains the posture of job execution mechanism, or is visited by ultrasound
The position of each executive item of the detection modes detect operation such as survey, laser acquisition, remote sensing executing agency and form are to obtain
The posture of job execution mechanism.
Control device is connect with measuring device and hydraulic valve bank signal, and control device is configured as: providing liquid in hydraulic pump
The flow of pressure oil is less than the work requirements flow summation of multiple fluid pressure drive devices, and more than two in multiple fluid pressure drive devices
When fluid pressure drive device is in running order, control device selects and adjusts the liquid of hydraulic pump according to the measurement result of measuring device
Pressure oil is assigned to the assignment of traffic mode of multiple fluid pressure drive devices and correspondingly controls hydraulic valve bank.Control device and measurement fill
It sets and is connected with hydraulic valve bank signal, so that measurement result can be sent to control device by measuring device, control device can be controlled
The folding of each valve of system operation hydraulic valve bank is to adjust assignment of traffic mode.
It is small in the flow for the hydraulic oil that hydraulic pump provides using the hydraulic control system of the job execution mechanism of the present embodiment
When the work requirements flow summation of multiple executive items of job execution mechanism, i.e., the flow of the hydraulic oil provided when hydraulic pump is not
Multiple fluid pressure drive devices in running order can be made all to meet its working flow demand, that is, hydraulic pump cannot expire simultaneously
When the load requirement of all executive items of foot, the measurement knot of the posture for the job execution mechanism that control device is measured according to measuring device
Fruit can select suitable assignment of traffic mode, such as flow mode of priority, flow for the fluid pressure drive device of multiple executive items
Equal proportion drop mode, equivalent reduction mode or specified reduction mode isotype, it is multiple so as to improve job execution mechanism
The coordination of executive item or meet job execution mechanism some movements priority requirement.
For example, being the job execution mechanism of the loading machine with swing arm and scraper bowl for job execution mechanism, work as hydraulic pump
When cannot meet the flow demand of all executive items simultaneously, measuring device measures the posture of job execution mechanism and to control device
Measurement result is sent, control device show that the job execution mechanism of loading machine is now in transport vehicle according to measurement result judgement
During some of handling material, control device is according to the assignment of traffic mode under preset this kind of posture at this time, in order to
It prevents material from trickling down the preferential flip angle for guaranteeing scraper bowl, enables the preferential mode of scraper bowl flow, i.e. priority of supply and guarantee control
The flow demand of the rotary ink tank of scraper bowl flip angle processed.Control device is obtained according to measurement result judgement in some embodiments
The job execution mechanism of device machine is now in loading machine and prepares in the dropping process of loading and close material, in the stream of hydraulic pump
When amount supplies the work requirements flow summation for each executive item that should be less than job execution mechanism, in order to improve job execution mechanism entirety
Harmony, control device can choose flow equal proportion drop mode, that is, enter control scraper bowl overturning rotary ink tank and
The flow equal proportion decline for controlling the big arm cylinder of large arm lifting, thus helps to ensure that the coordination of scraper bowl at this time and large arm movement
Property.During some of other job execution mechanisms, assignment of traffic mode can also be the executive item into each work
The flow of fluid pressure drive device reduce the equivalent reduction mode of identical value or the fluid pressure drive device of specifying some executive item
The specified reduction mode isotype that flow reduces.
In some embodiments, multiple fluid pressure drive devices include multiple hydraulic cylinders.
In some embodiments, hydraulic valve bank includes that the flow area being correspondingly arranged with multiple fluid pressure drive devices can adjust
Multiple valve modules, each valve module is connected between corresponding fluid pressure drive device and hydraulic pump, control device and multiple valve groups
Part signal is connected to adjust the flow area of each valve module.It is through-flow by being arranged between each fluid pressure drive device and hydraulic pump
The adjustable valve module of area, control device by adjusting the respective flow area of each valve module and their combination,
So as to adjust to obtain selected assignment of traffic mode.
In some embodiments, valve module includes reversing slide valve, and control device controls the displacement of reversing slide valve spool sliding.
Reversing slide valve is arranged can adjust flow area by the movement of control valve core, while can also switch the side of hydraulic oil flow path
To.
In some embodiments, hydraulic control system includes the displacement sensing for the displacement for detecting the spool of reversing slide valve
Device, displacement sensor are connect with control device signal.The displacement of displacement sensor detection reversing slide valve spool is set and is sent to
Control device may be implemented feedback regulation of the control device to the spool of reversing slide valve, mention high control precision.
In some embodiments, fluid pressure drive device includes the first oil pocket and the second oil pocket, and valve module includes for being connected to
First oil pocket of corresponding fluid pressure drive device with control the first oil pocket into oil extraction the first reversing slide valve component with for being connected to
Second reversing slide valve component of the second oil pocket and the second oil pocket of control of corresponding fluid pressure drive device into oil extraction.The embodiment
In, two oil pockets of each fluid pressure drive device are provided with reversing slide valve component to adjust it into the flow area of oil extraction, are somebody's turn to do
In setting control device can choose each oil pocket of independent adjustment into oil extraction, can also cooperate adjust two oil pockets into row
Oil, improves the alternative of control strategy, while also improving the reliability of control and regulation.
In some embodiments, hydraulic control system further includes being connected to for hydraulic control system oil return and with hydraulic pump
Fuel tank, the first reversing slide valve component and/or the second reversing slide valve component include: the first liquid controlled reversing slide valve, the first liquid controlled reversing
Slide valve includes first positioned at two hydraulic control mouths at its spool both ends and with the correspondence chamber of corresponding fluid pressure drive device
First valve port of liquid controlled reversing slide valve, the first liquid controlled reversing slide valve being connected to the oil discharge outlet of hydraulic pump the second valve port and with
The third valve port of first liquid controlled reversing slide valve of fuel tank connection；With the first electromagnetic switch slide valve, the first electromagnetic switch slide valve includes
First valve port of the first electromagnetic switch slide valve being connected with one of them of two hydraulic control mouths of the first liquid controlled reversing slide valve and two
Second valve port of another first connected electromagnetic switch slide valve in a hydraulic control mouth, first be connected to the oil discharge outlet of hydraulic pump
4th valve port of the third valve port of electromagnetic switch slide valve and the first electromagnetic switch slide valve being connected to fuel tank.
In the embodiment, hydraulic-driven component is adjusted into oil extraction flow by the first liquid controlled reversing slide valve of selection
Valve module, and control the spool displacement of the first liquid controlled reversing slide valve by the first electromagnetic switch slide valve of setting, may be implemented pair
The automatic control of spool displacement, to realize the automatic control to each fluid pressure drive device flow.
In some embodiments, the first liquid controlled reversing slide valve has is changed by the first hydraulic control of two hydraulic control mouth control switching
To the first valve position, the second valve position of the first liquid controlled reversing slide valve and the third valve position of the first liquid controlled reversing slide valve of slide valve,
Under first valve position of one liquid controlled reversing slide valve, the second of the first valve port of the first liquid controlled reversing slide valve and the first liquid controlled reversing slide valve
The third valve port of valve port connection, the first liquid controlled reversing slide valve disconnects；Under the second valve position of the first liquid controlled reversing slide valve, the first liquid
The third valve port for controlling the first valve port of reversing slide valve, the second valve port of the first liquid controlled reversing slide valve and the first liquid controlled reversing slide valve is equal
It disconnects；Under the third valve position of the first liquid controlled reversing slide valve, the first valve port and the first liquid controlled reversing of the first liquid controlled reversing slide valve
The third valve port of slide valve is connected to, and the second valve port of the first liquid controlled reversing slide valve disconnects.
First electromagnetic switch slide valve have the first valve position of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve second
The third valve position of valve position and the first electromagnetic switch slide valve, under the first valve position of the first electromagnetic switch slide valve, the first electromagnetic switch
First valve port of slide valve is connected to the third valve port of the first electromagnetic switch slide valve, the second valve port of the first electromagnetic switch slide valve and
4th valve port of one electromagnetic switch slide valve is connected to；Under the second valve position of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve
The first valve port and the first electromagnetic switch slide valve the second valve port and be connected to fuel tank the 4th of the first electromagnetic switch slide valve
Valve port three is homogeneously intercommunicated, and the third valve port of the first electromagnetic switch slide valve disconnects；In the third valve of the first electromagnetic switch slide valve
Under position, the second valve port of the first electromagnetic switch slide valve is connected to the third valve port of the first electromagnetic switch slide valve, the first electromagnetic switch
First valve port of slide valve is connected to the 4th valve port of the first electromagnetic switch slide valve.
In some embodiments, it is additionally provided with and subtracts between the third valve port of the first electromagnetic switch slide valve and the oil discharge outlet of hydraulic pump
Pressure valve.The setting helps to maintain the stability of the third valve port input pressure of the first electromagnetic switch slide valve, to facilitate reality
Now being precisely controlled to the hydraulic control mouth of the first liquid controlled reversing slide valve.
In some embodiments, hydraulic pump is variable pump, between the stroking mechanism of variable pump and the oil discharge outlet of variable pump also
It is connected with load feedback valve, hydraulic oil when load feedback valve is for by hydraulic pump works is introduced into stroking mechanism with regulated variable
The discharge capacity of pump.Feedback regulation of the load pressure to hydraulic pump discharge may be implemented in the setting, in the hydraulic oil that hydraulic pump provides
After flow cannot meet simultaneously the work requirements flow of all executive items, increase adjusting can be carried out to hydraulic pump discharge, thus
Help to realize the matching between the oil drain quantity of hydraulic pump and the work requirements flow of each executive item.
In some embodiments, load feedback valve includes the second liquid controlled reversing slide valve and the second electromagnetic switch slide valve.
Second liquid controlled reversing slide valve includes positioned at two sides for controlling two mobile hydraulic control mouths of its spool.Second hydraulic control
Reversing slide valve further includes the first valve port of the second liquid controlled reversing slide valve being connected to stroking mechanism, is connected to the oil discharge outlet of hydraulic pump
The second liquid controlled reversing slide valve the second valve port and the second liquid controlled reversing slide valve being connected to fuel tank third valve port.
Second electromagnetic switch slide valve includes one of them is connected with two hydraulic control mouths of the second liquid controlled reversing slide valve second
First valve port of electromagnetic switch slide valve, with second valve of another second electromagnetic switch slide valve being connected in two hydraulic control mouths
Mouthful, the third valve port of the second electromagnetic switch slide valve being connected to the oil discharge outlet of hydraulic pump and the second electromagnetism being connected to fuel tank change
To the 4th valve port of slide valve.
In some embodiments, the second liquid controlled reversing slide valve includes by the second liquid controlled reversing slide valve of hydraulic control mouth control switching
The first valve position, the second liquid controlled reversing slide valve the second valve position.Under the first valve position of the second liquid controlled reversing slide valve, the second hydraulic control
First valve port of reversing slide valve, the second valve port of the second liquid controlled reversing slide valve, the second liquid controlled reversing slide valve third valve port connect
It is logical.Under the second valve position of the second liquid controlled reversing slide valve, the first valve port of the second liquid controlled reversing slide valve and the second liquid controlled reversing are sliding
Second valve port of valve is connected to, and the third valve port of the second liquid controlled reversing slide valve disconnects.
Second electromagnetic switch slide valve include the first valve position of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve second
The third valve position of valve position and the second electromagnetic switch slide valve.Under the first valve position of the second electromagnetic switch slide valve, the second electromagnetic switch
First valve port of slide valve is connected to the third valve port of the second electromagnetic switch slide valve, the second valve port of the second electromagnetic switch slide valve and
4th valve port of two electromagnetic switch slide valves is connected to.Under the second valve position of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve
The first valve port, the second valve port of the second electromagnetic switch slide valve and the 4th valve of the second electromagnetic switch slide valve being connected to fuel tank
Mouth three is homogeneously intercommunicated, and the third valve port of the second electromagnetic switch slide valve disconnects.In the third valve position of the second electromagnetic switch slide valve
Under, the second valve port of the second electromagnetic switch slide valve is connected to the third valve port of the second electromagnetic switch slide valve, and the second electromagnetic switch is sliding
First valve port of valve is connected to the 4th valve port of the second electromagnetic switch slide valve.
In some embodiments, the angle of the tilt angle for detecting variable swash plate is additionally provided on the variable swash plate of variable pump
Spend sensor.Angular transducer is connect with control device signal result is output to control device.The setting can make to control
The result for the swash plate tilt angle that device is measured by angular transducer obtains the current discharge capacity of variable pump, so as to pass through knot
The flow of output hydraulic pressure oil under variable pump current working status is calculated in the revolving speed for closing variable pump.
In some embodiments, hydraulic control system further includes the first oil pocket or hydraulic for detecting fluid pressure drive device
The flow detector of second oil pocket of driving device.By the detection to fluid pressure drive device flow, control device can root
Carry out feedback regulation hydraulic valve bank according to testing result, to realize the assignment of traffic mode selected according to the posture of job execution mechanism
Execution.
In some embodiments, flow detector includes the first oil pocket or the second oil for detecting fluid pressure drive device
The pressure of the first pressure sensor of the pressure of the hydraulic oil of chamber and the hydraulic oil of the oil discharge outlet discharge for detecting hydraulic pump
Second pressure sensor.By detecting the pressure of the hydraulic oil of obtained the first oil pocket or the second oil pocket and the pressure of hydraulic pump,
Then by the flow area between the density and hydraulic pump and fluid pressure drive device in conjunction with hydraulic oil according to the stream of restriction
Measuring formula can be in the hope of fluid pressure drive device into the flow of oil extraction.
Flow area between hydraulic pump and fluid pressure drive device can be sliding according to the commutation obtained using displacement sensor
The displacement of valve core and the structure size of slide valve runner acquire.
In some embodiments, flow detector includes flowmeter.
In some embodiments, job execution mechanism includes digging arm, and multiple executive items include and support job execution machine
The hinged large arm of the body of structure and the hinged forearm of large arm and the scraper bowl hinged with forearm.
Carry out the hydraulic control system of schematically illustrate job execution mechanism of the invention with a specific embodiment below.
In the present embodiment, as shown in Figure 1, job execution mechanism includes being set in work machine body to make for excavating
The digging arm of industry.The executive item of digging arm includes large arm, forearm and scraper bowl, and large arm is hinged with body, and forearm is hinged with large arm, shovel
It struggles against hinged with forearm.Fluid pressure drive device includes the forearm oil for driving the big arm cylinder 4.11 of large arm, for driving forearm
Cylinder 5.11 and bucket cylinder 6.11 for driving scraper bowl.Big arm cylinder 4.11, oil cylinder of small arm 5.11 and bucket cylinder 6.11
The small chamber first oil pocket and the second oil pocket the big chamber respectively without bar and have bar.Big arm cylinder 4.11, oil cylinder of small arm 5.11 and shovel
The displacement sensor for measuring the displacement of its piston rod is equipped on bucket oil cylinder 6.11.
Hydraulic pump includes for providing the negative of hydraulic oil to big arm cylinder 4.11, oil cylinder of small arm 5.11 and bucket cylinder 6.11
Carry sensitive variable pump 1.
Hydraulic valve bank between load-reacting pump 1 and each fluid pressure drive device includes being connected to load-reacting
Pump 1 and three groups of valve modules between big arm cylinder 4.11, oil cylinder of small arm 5.11 and bucket cylinder 6.11.Every group of valve module include
The first reversing valve assembly being set between load-reacting pump 1 and the first oil pocket of corresponding fluid pressure drive device, and set
The second reversing valve assembly being placed between load-reacting pump 1 and the second oil pocket of corresponding fluid pressure drive device.Every group of valve
The first reversing valve assembly and the second reversing valve assembly of component include for controlling the chamber of corresponding fluid pressure drive device into row
First liquid controlled reversing slide valve of oil and the first electromagnetic switch slide valve acted for controlling corresponding first liquid controlled reversing slide valve.
In the present embodiment, the first liquid controlled reversing slide valve of each valve module be respectively as follows: be connected to load-reacting pump 1 with it is big
The big chamber liquid controlled reversing slide valve 4.2 of big arm cylinder between the big chamber of arm oil cylinder 4.11 is connected to load-reacting pump 1 and large arm
The small chamber liquid controlled reversing slide valve 4.8 of big arm cylinder between the small chamber of oil cylinder 4.11 is connected to load-reacting pump 1 and forearm oil
The big chamber liquid controlled reversing slide valve 5.2 of oil cylinder of small arm between the big chamber of cylinder 5.11 is connected to load-reacting pump 1 and oil cylinder of small arm
The small chamber liquid controlled reversing slide valve 5.8 of oil cylinder of small arm between 5.11 small chamber is connected to load-reacting pump 1 and bucket cylinder
The big chamber liquid controlled reversing slide valve 6.2 of bucket cylinder between 6.11 big chamber and it is connected to load-reacting pump 1 and bucket cylinder
The small chamber liquid controlled reversing slide valve 6.8 of bucket cylinder between 6.11 small chamber.
Above-mentioned first liquid controlled reversing slide valve include positioned at its spool both ends two hydraulic control mouths and with it is corresponding hydraulic
First valve port of the first liquid controlled reversing slide valve of the correspondence chamber of driving device, the oil discharge outlet with load-reacting pump 1
Second valve port of the first liquid controlled reversing slide valve of connection and the third valve port for the first liquid controlled reversing slide valve being connected to fuel tank 2.
In the present embodiment, the first electromagnetic switch slide valve of each valve module is respectively as follows: for controlling the big chamber hydraulic control of big arm cylinder
The big chamber electromagnetic switch slide valve 4.1 of the big arm cylinder of reversing slide valve 4.2, for controlling the small chamber liquid controlled reversing slide valve 4.2 of big arm cylinder
The small chamber electromagnetic switch slide valve 4.10 of big arm cylinder, the oil cylinder of small arm for controlling the big chamber liquid controlled reversing slide valve 5.2 of oil cylinder of small arm
Big chamber electromagnetic switch slide valve 5.1, the small chamber electromagnetic switch of oil cylinder of small arm for controlling the small chamber liquid controlled reversing slide valve 5.2 of oil cylinder of small arm
Slide valve 5.10, is used the big chamber electromagnetic switch slide valve 6.1 of bucket cylinder for controlling the big chamber liquid controlled reversing slide valve 6.2 of bucket cylinder
In the small chamber electromagnetic switch slide valve 6.10 of bucket cylinder of the control small chamber liquid controlled reversing slide valve 6.2 of bucket cylinder.
Above-mentioned first electromagnetic switch slide valve includes and two hydraulic control mouths of corresponding first liquid controlled reversing slide valve wherein one
First valve port of a the first connected electromagnetic switch slide valve is slided with another first electromagnetic switch being connected in two hydraulic control mouths
Second valve port of valve, the third valve port of the first electromagnetic switch slide valve being connected to the oil discharge outlet of load-reacting pump 1 and with
4th valve port of the first electromagnetic switch slide valve that fuel tank 2 is connected to.
Above-mentioned first liquid controlled reversing slide valve, which all has, controls the first valve position of switching, second by two hydraulic control mouths at its both ends
Valve position and third valve position.Under the first valve position of the first liquid controlled reversing slide valve, the first valve port of the first liquid controlled reversing slide valve and
Second valve port of one liquid controlled reversing slide valve is connected to, and the third valve port of the first liquid controlled reversing slide valve disconnects, fluid pressure drive device oil inlet.
Under the second valve position, the first valve port of the first liquid controlled reversing slide valve, the second valve port of the first liquid controlled reversing slide valve and the first hydraulic control
The third valve port of reversing slide valve disconnects.Under third valve position, the first valve port and the first hydraulic control of the first liquid controlled reversing slide valve are changed
It is connected to the third valve port of slide valve, the second valve port of the first liquid controlled reversing slide valve disconnects, fluid pressure drive device oil extraction.
Above-mentioned first electromagnetic switch slide valve all has the first valve position, the second valve position and third valve position.In the first electromagnetic switch
Under first valve position of slide valve, the first valve port of the first electromagnetic switch slide valve is connected to the third valve port of the first electromagnetic switch slide valve,
Second valve port of the first electromagnetic switch slide valve is connected to the 4th valve port of the first electromagnetic switch slide valve.Under the second valve position,
Second valve port of the first valve port of the first electromagnetic switch slide valve and the first electromagnetic switch slide valve and the first electricity being connected to fuel tank 2
4th valve port three of magnetic reversing slide valve is homogeneously intercommunicated, and the third valve port of the first electromagnetic switch slide valve disconnects.In third
Under valve position, the second valve port of the first electromagnetic switch slide valve is connected to the third valve port of the first electromagnetic switch slide valve, and the first electromagnetism changes
It is connected to the first valve port of slide valve with the 4th valve port of the first electromagnetic switch slide valve.
Pressure reducing valve 3.2 is equipped between the oil discharge outlet of third valve port and the load-reacting pump 1 of first electromagnetic switch slide valve
And the pressure sensor 3.3 of detection hydraulic oil pressure.
Be equipped on above-mentioned first liquid controlled reversing slide valve connect with control device signal for detect the first liquid controlled reversing
The displacement sensor of the spool displacement of slide valve.
As shown in Figure 1, there is the displacement sensor of setting in the present embodiment: being set to the big chamber liquid controlled reversing slide valve of big arm cylinder
Displacement sensor 4.5 on 4.2, the displacement sensor 4.9 on the small chamber liquid controlled reversing slide valve 4.8 of big arm cylinder, be set to it is small
Displacement sensor 5.5 on the big chamber liquid controlled reversing slide valve 5.2 of arm oil cylinder is set on the small chamber liquid controlled reversing slide valve 5.8 of oil cylinder of small arm
Displacement sensor 5.9, the displacement sensor 6.5 on the big chamber liquid controlled reversing slide valve 6.2 of bucket cylinder, be set to bucket cylinder
Displacement sensor 6.9 on small chamber liquid controlled reversing slide valve 6.8.
As shown in Figure 1, the big chamber of the first valve port of the big chamber liquid controlled reversing slide valve 4.2 of big arm cylinder and big arm cylinder 4.11 it
Between be equipped between pressure sensor 4.3, with fuel tank 2 be equipped with one-way overflow valve 4.4.The small chamber liquid controlled reversing slide valve 4.8 of big arm cylinder
The first valve port and big arm cylinder 4.11 small chamber between be equipped between pressure sensor 4.7, with fuel tank 2 be equipped with one-way overflow valve
4.6.Pressure sensing is equipped between first valve port of the big chamber liquid controlled reversing slide valve 5.2 of oil cylinder of small arm and the big chamber of oil cylinder of small arm 5.11
One-way overflow valve 5.4 is equipped between device 5.3, with fuel tank 2.First valve port of the small chamber liquid controlled reversing slide valve 5.8 of oil cylinder of small arm with it is small
It is equipped between pressure sensor 5.7, with fuel tank 2 between the small chamber of arm oil cylinder 5.11 and is equipped with one-way overflow valve 5.6.Bucket cylinder is big
Pressure sensor 6.3 is equipped between first valve port of chamber liquid controlled reversing slide valve 6.2 and the big chamber of bucket cylinder 6.11, with fuel tank 2
Between be equipped with one-way overflow valve 6.4.First valve port of the small chamber liquid controlled reversing slide valve 6.8 of oil cylinder of small arm is small with bucket cylinder 6.11
It is equipped between pressure sensor 6.7, with fuel tank 2 between chamber and is equipped with one-way overflow valve 6.6.The oil extraction oil of load-reacting pump 1
Road is additionally provided with the pressure sensor 3.5 of the oil pressure of the oil discharge outlet for detecting load-reacting pump 1.
It is anti-that load is also connected between the stroking mechanism of load-reacting pump 1 and the oil discharge outlet of load-reacting pump 1
Present valve.
As shown in Figure 1, load feedback valve includes the second liquid controlled reversing slide valve 3.6 and the second electromagnetic switch in the present embodiment
Slide valve 3.8, the second liquid controlled reversing slide valve 3.6 include positioned at both ends for controlling two mobile hydraulic control mouths of its spool, and second
Liquid controlled reversing slide valve 3.6 further includes the with the second liquid controlled reversing slide valve 3.6 for being connected to of stroking mechanism of load-reacting pump 1
The second valve port and and fuel tank of one valve port, the second liquid controlled reversing slide valve 3.6 being connected to the oil discharge outlet of load-reacting pump 1
The third valve port of second liquid controlled reversing slide valve 3.6 of 2 connections.
Second electromagnetic switch slide valve 3.8 include in two hydraulic control mouths with the second liquid controlled reversing slide valve 3.6 one be connected
First valve port of the second electromagnetic switch slide valve 3.8, with another second electromagnetic switch slide valve 3.8 being connected in two hydraulic control mouths
The second valve port, the third valve port of the second electromagnetic switch slide valve 3.8 that is connected to the oil discharge outlet of load-reacting pump 1 and with
4th valve port of the second electromagnetic switch slide valve 3.8 that fuel tank 2 is connected to.
Second liquid controlled reversing slide valve 3.6 has the first valve of the second liquid controlled reversing slide valve 3.6 by the control switching of hydraulic control mouth
Position, the second liquid controlled reversing slide valve 3.6 the second valve position.Under the first valve position of the second liquid controlled reversing slide valve 3.6, the second hydraulic control is changed
To the first valve port of slide valve 3.6, the second valve port of the second liquid controlled reversing slide valve 3.6, the second liquid controlled reversing slide valve 3.6 third valve
Mouth is connected to, and for load-reacting pump 1 directly to 2 oil extraction of fuel tank, load-reacting pumps 1 off-load at this time.It is changed in the second hydraulic control
To under the second valve position of slide valve 3.6, the of the first valve port of the second liquid controlled reversing slide valve 3.6 and the second liquid controlled reversing slide valve 3.6
The third valve port of the connection of two valve ports, the second liquid controlled reversing slide valve 3.6 disconnects, and the second liquid controlled reversing slide valve 3.6 will load quick at this time
The oil pressure for feeling the oil discharge outlet of variable pump 1, which is introduced into the discharge capacity adjusting oil circuit LS of stroking mechanism, adjusts load-reacting pump 1
Discharge capacity.
Second electromagnetic switch slide valve 3.8 has the first valve position of the second electromagnetic switch slide valve 3.8, the second electromagnetic switch slide valve
3.8 the second valve position and the third valve position of the second electromagnetic switch slide valve 3.8.In the first valve position of the second electromagnetic switch slide valve 3.8
Under, the first valve port of the second electromagnetic switch slide valve 3.8 is connected to the third valve port of the second electromagnetic switch slide valve 3.8, the second electromagnetism
Second valve port of reversing slide valve 3.8 is connected to the 4th valve port of the second electromagnetic switch slide valve 3.8.In the second electromagnetic switch slide valve
Under 3.8 the second valve position, the first valve port of the second electromagnetic switch slide valve 3.8, the second electromagnetic switch slide valve 3.8 the second valve port with
And the 4th valve port three of the second electromagnetic switch slide valve 3.8 being connected to fuel tank 2 is homogeneously intercommunicated, the second electromagnetic switch slide valve
3.8 third valve port disconnects.Under the third valve position of the second electromagnetic switch slide valve 3.8, the second of the second electromagnetic switch slide valve 3.8
Valve port is connected to the third valve port of the second electromagnetic switch slide valve 3.8, the first valve port of the second electromagnetic switch slide valve 3.8 and the second electricity
4th valve port of magnetic reversing slide valve 3.8 is connected to.
The discharge capacity of the stroking mechanism of load-reacting pump 1 adjusts the pressure sensor that oil circuit LS is equipped with detection oil pressure
It is equipped with overflow valve 3.4 between 3.1, with fuel tank 2, the angle for detecting swash plate tilt angle is additionally provided on load-reacting pump 1
Spend sensor 7.
The flow for the hydraulic oil that load-reacting pump 1 provides can be detected by modes such as setting flowmeters, at this
It is to detect that the tilt angle conversion of the swash plate of load-reacting pump 1 show that load is quick by angular transducer 7 in embodiment
The discharge capacity for feeling variable pump 1 can find out load-reacting pump 1 according to the two and mention in conjunction with the revolving speed of load-reacting pump 1
The flow of the hydraulic oil of confession.For load-reacting pump 1 by driven by engine, engine speed is load-sensitive in the present embodiment
The revolving speed of variable pump 1.
In the present embodiment, the measuring device of the posture for measuring digging arm includes that large arm, forearm and scraper bowl are equipped with
The speed of each executive item can also be calculated according to the data that displacement sensor provides, to be used in displacement sensor
The speed for driving the hydraulic cylinder of each executive item can be calculated and respectively hold in conjunction with the cylinder diameter structure size data of each hydraulic cylinder
The data on flows of the fluid pressure drive device of row part.
In the present embodiment, at work, control device controls the second liquid controlled reversing slide valve 3.6 and is in the second valve digging arm
Position, when digging arm is ready for some Job Operations, demand speed when according to the work of each executive item can be calculated
The work requirements flow of the hydraulic cylinder of each executive item, when the flow of 1 offer hydraulic oil of load-reacting pump is less than and will carry out
The work requirements flow summation of the fluid pressure drive device of work, and when more than two fluid pressure drive device is in running order, control
Device processed is various according to being rule of thumb previously set with modes such as tests of storing in database according to the posture of digging arm
Optimal assignment of traffic mode under posture selects the suitable assignment of traffic mode under the present posture of digging arm, and root at this time
The flow area into oil extraction of each executive item is determined according to the assignment of traffic mode of selection, and then passes through the corresponding each executive item of control
The first electromagnetic switch slide valve control corresponding each first liquid controlled reversing slide valve movement, thereby executing selected assignment of traffic
Mode, and be precisely controlled respectively according to the displacement of the spool of the displacement sensor feedback set on each first liquid controlled reversing slide valve
The spool displacement of a first liquid controlled reversing slide valve.Then according to the flow into oil extraction of the hydraulic cylinder of each executive item after controlling
Carry out feedback modifiers control instruction, realizes selected assignment of traffic mode with accurate.Executing the same of selected assignment of traffic mode
When, the stroking mechanism of load-reacting pump 1 gradually increases discharge capacity under the action of loading oil pressure, to fill with multiple hydraulic-drivens
The work requirements flow summation set gradually matches, when the flow for the hydraulic oil that load-reacting pump 1 provides is able to satisfy hydraulic drive
When the work requirements flow summation of dynamic device, the flow distribution according to need of all hydraulic driving device.
A kind of Work machine is also disclosed in the embodiment of the present invention, and Work machine includes the hydraulic control of job execution mechanism above-mentioned
System processed.
In some embodiments, Work machine is multifunctional rescue vehicle, and job execution mechanism includes digging arm, multiple execution
Part includes the large arm hinged with the body of Work machine and the hinged forearm of large arm and the scraper bowl hinged with forearm.
A kind of control method of the hydraulic control system of aforementioned job execution mechanism is also disclosed in the embodiment of the present invention, comprising:
The posture of step S1, measurement job execution mechanism form measurement result；
Step S2, judges whether the flow of hydraulic pump offer hydraulic oil is less than the work requirements stream of multiple fluid pressure drive devices
It measures summation and judges whether more than two fluid pressure drive devices are in running order in multiple fluid pressure drive devices；
Step S3, if the judging result in step S2 is to be, the measurement result selection obtained according to step S1 is hydraulic
The hydraulic oil distribution of pump to corresponding control multiple executive items multiple fluid pressure drive devices assignment of traffic mode and correspondingly
Control the hydraulic valve bank.
In some embodiments, in step sl, job execution mechanism is measured by measuring the movement of multiple executive items
Posture.
In some embodiments, the movement for measuring multiple executive items includes the displacement and/or survey of measurement fluid pressure drive device
Measure the angle of fluid pressure drive device.
In some embodiments, assignment of traffic mode includes that flow mode of priority, flow equal proportion drop mode, equivalence subtract
Small mode or specified reduction mode.
In some embodiments, pass through the flow area between control hydraulic pump and each fluid pressure drive device in step s3
Implement assignment of traffic mode.
In some embodiments, controlling the flow area between hydraulic pump and each fluid pressure drive device includes that control setting exists
The displacement of the spool of reversing slide valve between hydraulic pump and each fluid pressure drive device.
In some embodiments, step S3 further include detect reversing slide valve spool displacement, by testing result come
The displacement of the spool of feedback regulation reversing slide valve.
In some embodiments, job execution mechanism includes digging arm, multiple executive items include the large arm hinged with body,
Hinged forearm and the scraper bowl hinged with forearm with large arm.
The hydraulic control system of the job execution mechanism of the control method and embodiment of the present invention of the embodiment of the present invention has
Identical advantage.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (27)
1. a kind of hydraulic control system of job execution mechanism, the job execution mechanism includes multiple execution interconnected
Part, which is characterized in that the hydraulic control system includes:
Multiple fluid pressure drive devices are correspondingly arranged with the multiple executive item, and each fluid pressure drive device is for driving correspondence
The executive item movement；
Hydraulic pump, for providing hydraulic oil to the multiple fluid pressure drive device；
Hydraulic valve bank is connected between the hydraulic pump and the multiple fluid pressure drive device, defeated for adjusting the hydraulic pump
Enter the pressure and flow of the hydraulic oil of the multiple fluid pressure drive device；
Measuring device, the posture for measuring the job execution mechanism form measurement result；
Control device is connect with the measuring device and the hydraulic valve bank signal, and the control device is configured as: described
The flow that hydraulic pump provides hydraulic oil is less than the work requirements flow summation of the multiple fluid pressure drive device, and the multiple liquid
When two or more fluid pressure drive device is in running order in hydraulic driver, according to the measurement result of the measuring device
Select and adjust the hydraulic oil distribution of the hydraulic pump to the multiple fluid pressure drive device assignment of traffic mode and correspondingly
Control the hydraulic valve bank.
2. hydraulic control system as described in claim 1, which is characterized in that the measuring device is by measuring the multiple hold
The movement of row part measures the posture of the job execution mechanism.
3. hydraulic control system as claimed in claim 2, which is characterized in that the measuring device includes: described for measuring
The angle sensor of the displacement sensor of the displacement of fluid pressure drive device and/or the angle for measuring the fluid pressure drive device
Device.
4. hydraulic control system as described in claim 1, which is characterized in that the multiple fluid pressure drive device includes multiple liquid
Cylinder pressure.
5. hydraulic control system as described in claim 1, which is characterized in that the assignment of traffic mode includes the preferential mould of flow
Formula, flow equal proportion drop mode, equivalent reduction mode or specified reduction mode.
6. hydraulic control system as described in claim 1, which is characterized in that the hydraulic valve bank include with it is the multiple hydraulic
The adjustable multiple valve modules of the flow area that driving device is correspondingly arranged, each valve module are connected to the corresponding hydraulic-driven
Between device and the hydraulic pump, the control device is connect to adjust each valve module with the multiple valve module signal
Flow area.
7. hydraulic control system as claimed in claim 6, which is characterized in that the valve module includes reversing slide valve, the control
Device processed controls the displacement of the spool sliding of the reversing slide valve.
8. hydraulic control system as claimed in claim 7, which is characterized in that the hydraulic control system includes for detecting
The displacement sensor of the displacement of the spool of reversing slide valve is stated, institute's displacement sensors are connect with the control device signal.
9. hydraulic control system as claimed in claim 7, which is characterized in that the fluid pressure drive device include the first oil pocket and
Second oil pocket, the valve module include for being connected to the first oil pocket of corresponding fluid pressure drive device to control the first oil pocket into row
The first reversing slide valve component and the second oil pocket for being connected to corresponding fluid pressure drive device of oil simultaneously control the second oil pocket into row
Second reversing slide valve component of oil.
10. hydraulic control system as claimed in claim 9, which is characterized in that the hydraulic control system further includes for institute
The fuel tank stating hydraulic control system oil return and being connected to the hydraulic pump, the first reversing slide valve component and/or described second
Reversing slide valve component includes:
First liquid controlled reversing slide valve, the first liquid controlled reversing slide valve include positioned at its spool both ends two hydraulic control mouths and with
First valve port of the first liquid controlled reversing slide valve of the correspondence chamber of corresponding fluid pressure drive device, the oil extraction with the hydraulic pump
Second valve port of the first liquid controlled reversing slide valve of mouth connection and the third for the first liquid controlled reversing slide valve being connected to the fuel tank
Valve port；With the first electromagnetic switch slide valve, the first electromagnetic switch slide valve includes two with the first liquid controlled reversing slide valve
First valve port of one of them the first connected electromagnetic switch slide valve of hydraulic control mouth is connected with another in described two hydraulic control mouths
The second valve port of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve being connected to the oil discharge outlet of the hydraulic pump third
4th valve port of valve port and the first electromagnetic switch slide valve being connected to the fuel tank.
11. hydraulic control system as claimed in claim 10, which is characterized in that
The first liquid controlled reversing slide valve has by the of the first liquid controlled reversing slide valve of its described two hydraulic control mouths control switching
One valve position, the second valve position of the first liquid controlled reversing slide valve and the first liquid controlled reversing slide valve third valve position, in first hydraulic control
Under first valve position of reversing slide valve, the of the first valve port of the first liquid controlled reversing slide valve and the first liquid controlled reversing slide valve
The third valve port of the connection of two valve ports, the first liquid controlled reversing slide valve disconnects；In the second valve of the first liquid controlled reversing slide valve
Under position, the first valve port of the first liquid controlled reversing slide valve, the second valve port of the first liquid controlled reversing slide valve and described first
The third valve port of liquid controlled reversing slide valve disconnects；Under the third valve position of the first liquid controlled reversing slide valve, first hydraulic control
First valve port of reversing slide valve is connected to the third valve port of the first liquid controlled reversing slide valve, the first liquid controlled reversing slide valve
Second valve port disconnects；
The first electromagnetic switch slide valve have the first valve position of the first electromagnetic switch slide valve, the first electromagnetic switch slide valve second
The third valve position of valve position and the first electromagnetic switch slide valve, under the first valve position of the first electromagnetic switch slide valve, described first
First valve port of electromagnetic switch slide valve is connected to the third valve port of the first electromagnetic switch slide valve, and first electromagnetic switch is sliding
Second valve port of valve is connected to the 4th valve port of the first electromagnetic switch slide valve；The second of the first electromagnetic switch slide valve
Under valve position, the second valve port of the first valve port of the first electromagnetic switch slide valve and the first electromagnetic switch slide valve and connect with fuel tank
4th valve port three of the first logical electromagnetic switch slide valve is homogeneously intercommunicated, and the third valve port of the first electromagnetic switch slide valve is disconnected
It opens；Under the third valve position of the first electromagnetic switch slide valve, the second valve port of the first electromagnetic switch slide valve and described the
The third valve port of one electromagnetic switch slide valve is connected to, the first valve port of the first electromagnetic switch slide valve and first electromagnetic switch
4th valve port of slide valve is connected to.
12. hydraulic control system as claimed in claim 10, which is characterized in that the third valve of the first electromagnetic switch slide valve
Pressure reducing valve is additionally provided between mouth and the oil discharge outlet of the hydraulic pump.
13. hydraulic control system as described in claim 1, which is characterized in that the hydraulic pump is variable pump, the variable pump
Stroking mechanism and the variable pump oil discharge outlet between be also connected with load feedback valve, the load feedback valve is for will be hydraulic
Hydraulic oil when pump work is introduced into the stroking mechanism discharge capacity for adjusting the variable pump.
14. hydraulic control system as claimed in claim 13, which is characterized in that the load feedback valve includes that the second hydraulic control is changed
To slide valve and the second electromagnetic switch slide valve, wherein
The second liquid controlled reversing slide valve includes positioned at both ends for controlling two mobile hydraulic control mouths of its spool, and described second
Liquid controlled reversing slide valve further includes the first valve port and the hydraulic pump for the second liquid controlled reversing slide valve being connected to the stroking mechanism
Oil discharge outlet connection the second liquid controlled reversing slide valve the second valve port and the second liquid controlled reversing slide valve for being connected to the fuel tank
Third valve port；
The second electromagnetic switch slide valve includes one of them is connected with two hydraulic control mouths of the second liquid controlled reversing slide valve second
First valve port of electromagnetic switch slide valve, second with another second electromagnetic switch slide valve being connected in described two hydraulic control mouths
Valve port, the second electromagnetic switch slide valve for being connected to the oil discharge outlet of the hydraulic pump third valve port and be connected to the fuel tank
4th valve port of the second electromagnetic switch slide valve.
15. hydraulic control system as claimed in claim 14, which is characterized in that
The second liquid controlled reversing slide valve have by the hydraulic control mouth control switching the second liquid controlled reversing slide valve the first valve position,
Second valve position of the second liquid controlled reversing slide valve, under the first valve position of the second liquid controlled reversing slide valve, second hydraulic control is changed
To the first valve port of slide valve, the second valve port of the second liquid controlled reversing slide valve, the second liquid controlled reversing slide valve third valve
Mouth is connected to；Under the second valve position of the second liquid controlled reversing slide valve, the first valve port of the second liquid controlled reversing slide valve with
Second valve port of the second liquid controlled reversing slide valve is connected to, and the third valve port of the second liquid controlled reversing slide valve disconnects；
The second electromagnetic switch slide valve have the first valve position of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve second
The third valve position of valve position and the second electromagnetic switch slide valve, under the first valve position of the second electromagnetic switch slide valve, described second
First valve port of electromagnetic switch slide valve is connected to the third valve port of the second electromagnetic switch slide valve, and second electromagnetic switch is sliding
Second valve port of valve is connected to the 4th valve port of the second electromagnetic switch slide valve；The second of the second electromagnetic switch slide valve
Under valve position, the first valve port of the second electromagnetic switch slide valve, the second electromagnetic switch slide valve the second valve port and with fuel tank connect
4th valve port three of the second logical electromagnetic switch slide valve is homogeneously intercommunicated, and the third valve port of the second electromagnetic switch slide valve is disconnected
It opens；Under the third valve position of the second electromagnetic switch slide valve, the second valve port of the second electromagnetic switch slide valve and described the
The third valve port of two electromagnetic switch slide valves is connected to, the first valve port of the second electromagnetic switch slide valve and second electromagnetic switch
4th valve port of slide valve is connected to.
16. hydraulic control system as claimed in claim 13, which is characterized in that be additionally provided on the variable swash plate of the variable pump
For detecting the angular transducer of the tilt angle of the variable swash plate, the angular transducer and the control device signal connect
It connects so that the result is output to the control device.
17. the hydraulic control system as described in claim 1 to 16 is any, which is characterized in that the hydraulic control system is also wrapped
Include the flow detection dress of the second oil pocket of the first oil pocket or the fluid pressure drive device for detecting the fluid pressure drive device
It sets.
18. hydraulic control system as claimed in claim 17, which is characterized in that the flow detector includes for detecting
The first pressure sensor of the pressure of the hydraulic oil of the first oil pocket or the second oil pocket of fluid pressure drive device and described for detecting
The second pressure sensor of the pressure of the hydraulic oil of the oil discharge outlet discharge of hydraulic pump.
19. the hydraulic control system as described in claim 1 to 16 is any, which is characterized in that the job execution mechanism includes
Digging arm, the multiple executive item include cutting with scissors with the large arm for supporting the body of the job execution mechanism hinged, with the large arm
The forearm and the scraper bowl hinged with the forearm connect.
20. a kind of Work machine, which is characterized in that the Work machine includes job execution mechanism and such as claim 1 to 19
The hydraulic control system of any job execution mechanism.
21. a kind of control method of the hydraulic control system of job execution mechanism according to any one of claims 1 to 19,
It is characterized in that, the control method includes:
Step S1, the posture for measuring the job execution mechanism form measurement result；
Step S2, judges whether the flow of the hydraulic pump offer hydraulic oil is less than the work need of the multiple fluid pressure drive device
It seeks flow summation and judges whether more than two fluid pressure drive devices are in running order in the multiple fluid pressure drive device；
Step S3 is selected if the judging result in the step S2 is to be according to the measurement result that step S1 is obtained
Assignment of traffic of the hydraulic oil distribution of the hydraulic pump to the multiple fluid pressure drive devices for corresponding to the multiple executive item controlled
Mode simultaneously correspondingly controls the hydraulic valve bank.
22. control method as claimed in claim 21, which is characterized in that in the step S1, the multiple by measuring
The movement of executive item measures the posture of the job execution mechanism.
23. control method as claimed in claim 22, which is characterized in that the movement for measuring the multiple executive item includes measurement
The displacement of the fluid pressure drive device and/or the angle of the measurement fluid pressure drive device.
24. control method as claimed in claim 21, which is characterized in that the assignment of traffic mode includes the preferential mould of flow
Formula, flow equal proportion drop mode, equivalent reduction mode or specified reduction mode.
25. control method as claimed in claim 21, which is characterized in that in the step S3 by controlling the hydraulic valve
Group adjusts the flow area between the hydraulic pump and each fluid pressure drive device and implements the assignment of traffic mode.
26. control method as claimed in claim 25, which is characterized in that including control setting in the hydraulic pump and each described
The displacement of the spool of reversing slide valve between fluid pressure drive device.
27. control method as claimed in claim 26, which is characterized in that the step S3 further includes detecting the reversing slide valve
Spool displacement, the displacement of the spool of the reversing slide valve is adjusted by the Displacement Feedback of the spool of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811183491.2A CN109058194B (en) | 2018-10-11 | 2018-10-11 | Hydraulic control system of work executing mechanism, control method thereof and work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811183491.2A CN109058194B (en) | 2018-10-11 | 2018-10-11 | Hydraulic control system of work executing mechanism, control method thereof and work machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058194A true CN109058194A (en) | 2018-12-21 |
| CN109058194B CN109058194B (en) | 2024-07-30 |
Family
ID=64764725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811183491.2A Active CN109058194B (en) | 2018-10-11 | 2018-10-11 | Hydraulic control system of work executing mechanism, control method thereof and work machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058194B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565732A (en) * | 2019-07-25 | 2019-12-13 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator bucket and arm attitude correlation coefficient evaluation method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856278A (en) * | 1985-12-30 | 1989-08-15 | Mannesmann Rexroth Gmbh | Control arrangement for at least two hydraulic consumers fed by at least one pump |
| US5182908A (en) * | 1992-01-13 | 1993-02-02 | Caterpillar Inc. | Control system for integrating a work attachment to a work vehicle |
| CN1224808A (en) * | 1997-12-17 | 1999-08-04 | 胡斯可国际股份有限公司 | Hydraulic control valve system with load sensing priority |
| US6173573B1 (en) * | 1996-02-28 | 2001-01-16 | Komatsu Ltd. | Control device for hydraulic drive machine |
| CN101001779A (en) * | 2004-07-22 | 2007-07-18 | 伊顿公司 | Anti-saturation valve assembly for load sensing hydraulic system |
| CN102371956A (en) * | 2011-10-20 | 2012-03-14 | 徐州重型机械有限公司 | Compound action hydraulic control system and wheeled construction machinery applying same |
| CN102465935A (en) * | 2010-11-11 | 2012-05-23 | 徐州重型机械有限公司 | Pressure-compensated valve, load-sensitive hydraulic system and crane applying same |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, control method of hydraulic system, and engineering machine |
| CN103016467A (en) * | 2012-12-25 | 2013-04-03 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Method for flow saturation prevention control during simultaneous action of plurality of hydraulic execution mechanisms |
| CN103398170A (en) * | 2013-08-19 | 2013-11-20 | 合肥工业大学 | Hydraulic control system for parallel planetary gear train transmission of automobile |
| CN106402059A (en) * | 2016-12-26 | 2017-02-15 | 徐工集团工程机械有限公司 | Load port individual valve, hydraulic bus control system and engineering machinery |
| CN106762909A (en) * | 2016-12-29 | 2017-05-31 | 浙江大学 | The hydraulic multitandem valve and its control method of a kind of high-speed switch valve pilot control |
| CN209309034U (en) * | 2018-10-11 | 2019-08-27 | 徐工集团工程机械有限公司 | The hydraulic control system and Work machine of job execution mechanism |
-
2018
- 2018-10-11 CN CN201811183491.2A patent/CN109058194B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856278A (en) * | 1985-12-30 | 1989-08-15 | Mannesmann Rexroth Gmbh | Control arrangement for at least two hydraulic consumers fed by at least one pump |
| US5182908A (en) * | 1992-01-13 | 1993-02-02 | Caterpillar Inc. | Control system for integrating a work attachment to a work vehicle |
| US6173573B1 (en) * | 1996-02-28 | 2001-01-16 | Komatsu Ltd. | Control device for hydraulic drive machine |
| CN1224808A (en) * | 1997-12-17 | 1999-08-04 | 胡斯可国际股份有限公司 | Hydraulic control valve system with load sensing priority |
| CN101001779A (en) * | 2004-07-22 | 2007-07-18 | 伊顿公司 | Anti-saturation valve assembly for load sensing hydraulic system |
| CN102465935A (en) * | 2010-11-11 | 2012-05-23 | 徐州重型机械有限公司 | Pressure-compensated valve, load-sensitive hydraulic system and crane applying same |
| CN102371956A (en) * | 2011-10-20 | 2012-03-14 | 徐州重型机械有限公司 | Compound action hydraulic control system and wheeled construction machinery applying same |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, control method of hydraulic system, and engineering machine |
| CN103016467A (en) * | 2012-12-25 | 2013-04-03 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Method for flow saturation prevention control during simultaneous action of plurality of hydraulic execution mechanisms |
| CN103398170A (en) * | 2013-08-19 | 2013-11-20 | 合肥工业大学 | Hydraulic control system for parallel planetary gear train transmission of automobile |
| CN106402059A (en) * | 2016-12-26 | 2017-02-15 | 徐工集团工程机械有限公司 | Load port individual valve, hydraulic bus control system and engineering machinery |
| CN106762909A (en) * | 2016-12-29 | 2017-05-31 | 浙江大学 | The hydraulic multitandem valve and its control method of a kind of high-speed switch valve pilot control |
| CN209309034U (en) * | 2018-10-11 | 2019-08-27 | 徐工集团工程机械有限公司 | The hydraulic control system and Work machine of job execution mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565732A (en) * | 2019-07-25 | 2019-12-13 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator bucket and arm attitude correlation coefficient evaluation method |
| CN110565732B (en) * | 2019-07-25 | 2021-07-27 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator bucket and arm attitude correlation coefficient evaluation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109058194B (en) | 2024-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100445575C (en) | Method and arrangement for controlling at least two hydraulic consumers | |
| CN103403362B (en) | There is the hydraulic control system of cylinder stall strategy | |
| CN103403364B (en) | There is the hydraulic control system of cylinder stall strategy | |
| CN105593438B (en) | For reducing the hydraulic system and method for swing arm bounce by balanced protection | |
| US10968604B2 (en) | Work machine | |
| KR102166576B1 (en) | Hydraulik system | |
| EP3121453B1 (en) | Hydraulic drive apparatus for construction machinery | |
| GB2356429A (en) | Controlling fluid flow in an electrohydraulic system | |
| JP2003214403A (en) | System and method for controlling flow rate of working oil | |
| JPWO2013027620A1 (en) | Hydraulic drive system | |
| CN103339327A (en) | Control system for a machine | |
| JP2006283975A (en) | Hydraulic system having variable back pressure control | |
| CN112154271B (en) | Construction machine | |
| US20170275852A1 (en) | Hydraulic control system for construction machine | |
| EP0394465B1 (en) | Hydraulic driving apparatus | |
| KR20150130337A (en) | Methods and systems for flow sharing in a hydraulic transformer system with multiple pumps | |
| CN110217737B (en) | Aerial work platform control valve working condition-division follow-up system and control method | |
| CN209309034U (en) | The hydraulic control system and Work machine of job execution mechanism | |
| US20120216519A1 (en) | Hydraulic control system having cylinder flow correction | |
| US20150082782A1 (en) | Independent flow rate controlling hydraulic system for pressure control of excavator and independent hydraulic pressure controlling method using the same | |
| CN109058194A (en) | The hydraulic control system and its control method and Work machine of job execution mechanism | |
| WO2018051533A1 (en) | Work machine | |
| CN106545041A (en) | Hydraulic control system and excavator | |
| US9249555B2 (en) | Hydraulic system having fixable multi-actuator relationship | |
| CN107605843A (en) | A kind of electro-hydraulic leveling valve group of multifunctional working bucket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220728 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Applicant after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Applicant before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |