CN107503995A - A kind of closed-loop control steering flow distributes multichannel valve arrangement - Google Patents
A kind of closed-loop control steering flow distributes multichannel valve arrangement Download PDFInfo
- Publication number
- CN107503995A CN107503995A CN201710586182.9A CN201710586182A CN107503995A CN 107503995 A CN107503995 A CN 107503995A CN 201710586182 A CN201710586182 A CN 201710586182A CN 107503995 A CN107503995 A CN 107503995A
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- China
- Prior art keywords
- level
- ddv
- valve
- control
- closed
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- 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.)
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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
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
Abstract
The invention discloses a kind of closed-loop control steering flow to distribute multichannel valve arrangement, it is characterized in that, including magnetic valve (1), one-level DDV (2), two level DDV (3), overflow valve (4), safety valve (5), pressure maintaining valve (6) and controller (7), wherein, hydraulic part is connected as：Oil-feed is connected with magnetic valve (1) afterwards by pressure maintaining valve (6), it is connected to the oil-feed of one-level DDV (2), (2) two control chambers of one-level DDV are connected with two level DDV (3) valve element both ends, and two level DDV (3) control chamber is connected with steering cylinder；Electric control part is connected as：Controller (7) is connected with magnetic valve (1), control the on off state of magnetic valve (1), normal control or the failure removal of the branch road are realized, controller (7) is connected with one-level DDV (2), two level DDV (3).The present invention uses automatically controlled mode, can realize different demands of the different user to turning function, while realize that automation, intellectuality provide interface for the vehicle of engineering machinery by adjusting control parameter.
Description
First, technical field
The invention belongs to engineering machinery field novel hydraulic structure design, and in particular to one kind substitutes conventional steering flow point
The hydraulic structure matched somebody with somebody.
2nd, background technology
Traditional project mechanical steering assignment of traffic realizes assignment of traffic by pilot operated rotary valve.By pilot valve to guide's oil circuit
It is allocated, the distribution flow acts on rotary valve both ends, and control rotary valve is axially moved, and then realizes that steering flow distributes.Using
Pilot valve, Accurate Data Flow Control can not be realized, turning velocity control fully relies on operator or speed is uncontrollable.
The present invention proposes that a kind of new organization plan substitutes original steering flow distribution structure scheme, and passes through closed loop control
System, realize the closed-loop control for receiving electric signal instruction.New organization plan effectively improves steering flow control accuracy, ensures to turn
To operating steadily.
3rd, the content of the invention
1. the problem to be solved in the present invention：
Conventional steering flow distribution structure is based on the thinking of " hydraulic control switching valve ", and pilot flow is carried out by guide's hand valve
Distribution, so as to promote steering valve core to move, reach the purpose of distribution steering flow.The organization plan can not meet that " flow is accurate
The requirement of control ", is unfavorable for the raising of divertical motion efficiency.Moreover, program Automated condtrol relatively difficult to achieve, is unfavorable for engineering
The intelligent development of machinery.
Therefore, the present invention proposes a kind of new Intelligent closed-loop control steering flow distribution multichannel valve arrangement, passes through controller
Closed-loop control, the accurate control of steering flow can be achieved, and controlled using electric signal, interface is provided for Automated condtrol.
2. technical scheme：
A kind of closed-loop control steering flow distributes multichannel valve arrangement, it is characterised in that including magnetic valve (1), one-level DDV
(2), two level DDV (3), overflow valve (4), safety valve (5), pressure maintaining valve (6) and controller (7), wherein, hydraulic part is connected as：
Oil-feed is connected with magnetic valve (1) afterwards by pressure maintaining valve (6), is connected to the oil-feed of one-level DDV (2), (2) two controls of one-level DDV
Chamber processed is connected with two level DDV (3) valve element both ends, and two level DDV (3) control chamber is connected with steering cylinder；Electric control part is connected as：Control
Device (7) is connected with magnetic valve (1), the on off state of control magnetic valve (1), realizes normal control or the failure removal of the branch road,
Controller (7) is connected with one-level DDV (2), two level DDV (3).
Described two level DDV (3) carries displacement transducer.
Described magnetic valve (1) is switch electromagnetic valve, when a failure occurs, the failure removal of the branch road can be achieved.
Described controller (7) is that one-level DDV (2) provides electric current output, while gathers two level DDV (3) displacement signal, is led to
Cross the accurate control that two level DDV (3) throttling spool window is realized in closed-loop control.
3. beneficial effects of the present invention：
Using the novel steering module scheme described by patent of the present invention, have the following effects that：
Accurate control steering flow distribution, realize the accurate control and wide cut adjustment of turning velocity；
Hydraulic module integrated level is high, is easy to assemble；
By adjusting control parameter, user's customization of turning function is easily realized；
Using automatically controlled mode, realize that automation, intellectuality provide interface for the vehicle of engineering machinery.
4th, illustrate
Fig. 1 technical solution of the present invention hydraulic schematic diagrams
Fig. 2 technical solution of the present invention controls sketch
1- magnetic valves, 2- one-level DDV, 3- two levels DDV, 4- overflow valve, 5- safety valves, 6- pressure maintaining valves, 7- controllers.
5th, embodiment
A kind of closed-loop control steering flow distributes multichannel valve arrangement, it is characterised in that including magnetic valve 1, one-level DDV2, two
Level DDV3, overflow valve 4, safety valve 5, pressure maintaining valve 6 and controller 7, wherein, hydraulic part is connected as：After oil-feed is by pressure maintaining valve 6
It is connected with magnetic valve 1, is connected to one-level DDV2 oil-feed, two control chambers of one-level DDV2 connects with two level DDV3 valve elements both ends
Connect, two level DDV3 control chambers are connected with steering cylinder；Electric control part is connected as：Controller 7 is connected with magnetic valve 1, controls magnetic valve 1
On off state, realize normal control or the failure removal of the branch road, controller 7 is connected with one-level DDV2, two level DDV3.It is described
Two level DDV3 carry displacement transducer.Described magnetic valve 1 is switch electromagnetic valve, when a failure occurs, the branch road can be achieved
Failure removal.Described controller 7 provides electric current output for one-level DDV2, while gathers two level DDV3 displacement signals, passes through
The accurate control of two level DDV3 throttling spool windows is realized in closed-loop control.
The present invention replaces original " hydraulic control " using automatically controlled mode, and guide is carried out using controller closed-loop control one-level DDV
The distribution of flow, and then realize the distribution of steering flow.Using automatically controlled mode, the displacement of two level DDV valve elements is accurately controlled, from
And accurately control steering flow to distribute, the accurate control of turning velocity is realized, and can realize that the wide cut adjustment of turning velocity ensures
Turn to steady.
In the course of work of the present invention, after controller instructs to electromagnetic valve work, steering module enters working condition；Control
Device receives instruction, compared with treated two level DDV sensor feedback value, difference is instructed and passed to by computing
One-level DDV force motor；One-level DDV realizes the motion of one-level valve element according to controller instruction, by the pilot flow from pressure maintaining valve
Amount is assigned to two level DDV valve elements both ends, so as to promote two level valve core movement；After two level valve core movement, oil-feed assignment of traffic is arrived
Two chambers of steering cylinder, realize and turn to；Two level valve core movement drives the motion of displacement transducer iron core, realizes exporting change, enters
And controller is fed back to, realize closed-loop control.
The application effect of the present invention：
1. by the closed-loop control of controller, accurately steering flow can be controlled to distribute, realize the accurate control of turning velocity
System and wide cut adjustment；
2. the organization plan hydraulic structure is only executing agency, hydraulic module integrated level is high, is easy to assemble；
3. using automatically controlled mode, different demands of the different user to turning function can be realized, together by adjusting control parameter
When realize automation for the vehicle of engineering machinery, intelligent provide interface.
Claims (4)
1. a kind of closed-loop control steering flow distributes multichannel valve arrangement, it is characterised in that including magnetic valve (1), one-level DDV (2),
Two level DDV (3), overflow valve (4), safety valve (5), pressure maintaining valve (6) and controller (7), wherein, hydraulic part is connected as：Oil-feed
It is connected afterwards with magnetic valve (1) by pressure maintaining valve (6), is connected to the oil-feed of one-level DDV (2), (2) two control chambers of one-level DDV
It is connected with two level DDV (3) valve element both ends, two level DDV (3) control chamber is connected with steering cylinder；Electric control part is connected as：Controller
(7) it is connected with magnetic valve (1), the on off state of control magnetic valve (1), realizes normal control or the failure removal of the branch road, control
Device (7) processed is connected with one-level DDV (2), two level DDV (3).
2. a kind of closed-loop control steering flow distribution multichannel valve arrangement according to claim 1, it is characterised in that described
Two level DDV (3) carries displacement transducer.
3. a kind of closed-loop control steering flow distribution multichannel valve arrangement according to claim 1, it is characterised in that described
Magnetic valve (1) is switch electromagnetic valve, when a failure occurs, the failure removal of the branch road can be achieved.
4. a kind of closed-loop control steering flow distribution multichannel valve arrangement according to claim 1, it is characterised in that described
Controller (7) is that one-level DDV (2) provides electric current output, while gathers two level DDV (3) displacement signal, is realized by closed-loop control
The accurate control of two level DDV (3) throttling spool window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586182.9A CN107503995A (en) | 2017-07-18 | 2017-07-18 | A kind of closed-loop control steering flow distributes multichannel valve arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586182.9A CN107503995A (en) | 2017-07-18 | 2017-07-18 | A kind of closed-loop control steering flow distributes multichannel valve arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503995A true CN107503995A (en) | 2017-12-22 |
Family
ID=60678842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710586182.9A Pending CN107503995A (en) | 2017-07-18 | 2017-07-18 | A kind of closed-loop control steering flow distributes multichannel valve arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503995A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030106420A1 (en) * | 2001-12-10 | 2003-06-12 | Kazunori Yoshino | Hydraulic control system with regeneration |
| CN102536937A (en) * | 2010-12-13 | 2012-07-04 | 杨洁 | High-precision and high-stability control system of pilot control multi-way valve |
| CN202937312U (en) * | 2012-12-03 | 2013-05-15 | 上海诚动液压科技发展有限公司 | Turbine oil electro-hydraulic servo hydraulic actuator under double closed loop control |
| CN106678111A (en) * | 2015-11-06 | 2017-05-17 | 中国航空工业第六八研究所 | Electrically-controlled multi-way valve |
-
2017
- 2017-07-18 CN CN201710586182.9A patent/CN107503995A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030106420A1 (en) * | 2001-12-10 | 2003-06-12 | Kazunori Yoshino | Hydraulic control system with regeneration |
| CN102536937A (en) * | 2010-12-13 | 2012-07-04 | 杨洁 | High-precision and high-stability control system of pilot control multi-way valve |
| CN202937312U (en) * | 2012-12-03 | 2013-05-15 | 上海诚动液压科技发展有限公司 | Turbine oil electro-hydraulic servo hydraulic actuator under double closed loop control |
| CN106678111A (en) * | 2015-11-06 | 2017-05-17 | 中国航空工业第六八研究所 | Electrically-controlled multi-way valve |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171222 |
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| WD01 | Invention patent application deemed withdrawn after publication |