CN105003710B - Positive flow and minus flow universal valve body structure and valve assembly - Google Patents
Positive flow and minus flow universal valve body structure and valve assembly Download PDFInfo
- Publication number
- CN105003710B CN105003710B CN201510437607.0A CN201510437607A CN105003710B CN 105003710 B CN105003710 B CN 105003710B CN 201510437607 A CN201510437607 A CN 201510437607A CN 105003710 B CN105003710 B CN 105003710B
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- China
- Prior art keywords
- valve
- oil duct
- valve body
- flow
- minus flow
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
-
- 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
- F15B13/16—Special measures for feedback, e.g. by a follow-up device
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a kind of positive flow and minus flow universal valve body structure and valve assembly, belong to engineering machinery field.The main points of its technical scheme are：Including valve body, center bypass oil duct and back oil road are provided with valve body, modularization connection oil duct is additionally provided with valve body, the modularization connection oil duct is connected with center bypass oil duct and back oil road respectively, modularization connection oil duct is provided with outer connector, and plug or minus flow feedback valve are provided with outer connector；A kind of positive flow and the general valve assembly of minus flow are also disclosed, it includes at least one above-mentioned valve body and the inserted valve on valve body.The present invention by main valve assembly to central by-passing valve valve after oil duct carry out innovation arrangement, the exchange to plug and minus flow feedback valve realizes the transformation of excavator positive flow valve and minus flow valve, reduces the production cost and management difficulty of manufacturer.
Description
Technical field
The present invention is a kind of control block hydraulic unit with of excavator, specifically, more particularly to a kind of positive flow and minus flow
Universal valve body structure and valve assembly.
Background technology
Banked direction control valves is the core component of excavator hydraulic system.Banked direction control valves determines hydraulic pump to each hydraulic action element
Assignment of traffic fuel feeding circuit and fuel system, many hydraulic actuators are acted simultaneously when and composite move how is realized, determined
Kinematics and dynamic (dynamical) characteristic during excavator operation, action is preferential and coordinate, interflow fuel feeding and straight line moving etc..
By flow control tactics, the center hydraulic system of opening is divided into positive flow system and minus flow system.Minus flow system is led to
The pressure signal crossed before collection main valve middle position throttle orifice is acted on the variable governor motion of pump, and pumpage and pressure signal are into anti-
Than.During normal work, the fluid of pump discharge flows to executing agency by a main control valve part, and a part is returned through center bypass oil duct
Oil.When controlling executing agency to slow down, the fluid of executing agency is gone to reduce, through bypassing the oil increasing of oil duct oil return, throttle orifice
Preceding pressure rise, this pressure signal is acted on pump, reduces pumpage；Conversely, when controlling executing agency to accelerate, going to hold
The oil increasing of row mechanism, and reduced through the fluid of center bypass oil duct, relatively low pressure signal acts on the governor motion of pump
On, make the discharge capacity of pump big, so as to the flow for meeting pump matches with executing agency to the demand of flow.
The control signal of positive flow comes from guide's secondary pressure, and principle is selected by a series of shuttle valve or pressure sensor
Go out highest secondary pressure signal to go to control the stroking mechanism of main pump.When handle displacement is increased, secondary pilot pressure is raised, higher
Pressure signal act on the governor motion of pump, make pump swash plate angle increase, discharge capacity increase；Conversely, when handle displacement diminishes
When, secondary pilot pressure diminishes, and the discharge capacity of pump diminishes, so as to meet the demand phase of the flow of pump and executing agency to flow
Match somebody with somebody.
Positive and negative flow system respectively has advantage and disadvantage, and two kinds of systems also go down long-term co-existence.Two kinds of systems in the market
Valve arrangement gap is larger, essentially also because valve body gap is larger, for complete system plant, and two kinds of whole machine gaps of system
Also larger, the poor universality of related hydraulic part such as pipeline increased cost to a certain extent；For valve manufacturer, two
The valve body of the system of kind needs two molds, and Liang Ban forces, fund input is big, and management is inconvenient.
The content of the invention
It is an object of the invention to provide a kind of positive flow and minus flow universal valve body structure and valve assembly, to overcome existing skill
The not general production cost for causing of parts is high, manage inconvenient lacking in positive flow system and the production of minus flow system in art
Fall into.
The present invention is realized using following technical scheme：A kind of positive flow and minus flow universal valve body structure, including valve
Body, is provided with center bypass oil duct and back oil road in valve body, modularization connection oil duct, the modularization connection oil are additionally provided with valve body
Road is connected with center bypass oil duct and back oil road respectively, and modularization connection oil duct is provided with outer connector, is installed on outer connector
There are plug or minus flow feedback valve, when installing plug, center bypass oil duct is connected oil duct and is joined directly together with oil return by modularization；
When installing minus flow feedback valve, center bypass oil duct is before oil return by the damping hole of minus flow feedback valve, minus flow feedback valve
By pressure signal before signal port FR/FL collection damping holes.
A kind of positive flow and the general valve assembly of minus flow, including at least one valve body and the inserted valve on valve body,
Center bypass oil duct and back oil road are provided with valve body, modularization connection oil duct, modularization connection oil duct difference are additionally provided with valve body
Connected with center bypass oil duct and back oil road, modularization connection oil duct is provided with outer connector, and plug is provided with outer connector
Or minus flow feedback valve, when installing plug, center bypass oil duct is connected oil duct and is joined directly together with back oil road by modularization；Install
During minus flow feedback valve, by the damping hole of minus flow feedback valve before oil return, minus flow feedback valve passes through center bypass oil duct
Pressure signal before signal port FR/FL collection damping holes.
Compared with prior art, the beneficial effects of the invention are as follows：
1) for complete system plant, because valve body is general, the versatility of positive flow system and minus flow system element is improved, such as
Related pipe fitting that main valve installing plate is connected to valve etc., makes R＆D costs, management cost of complete system plant etc. all be reduced.
2) stock is reduced：The general reduction for also implying that stock of element, for element Plant, positive and negative flow valve body is general,
Mean that stock can reduce half, for complete system plant, the stock of standby two systems was needed originally, positive and negative flow valve body is general
So that positive flow system platform is general with minus flow system platform major part element, these universal components only need to standby a set of system
The stock of system.
3) labour intensity is reduced：For operator, positive and negative flow valve body is general, it is meant that operation is more simplified, can
Substantially reduce labor strength.
4) research and development progress is accelerated：It is big that the invention of positive minus flow universal valve body causes that positive and negative flow system shares the whole machine of identical
Data are possibly realized, and also cause that more energy are dropped in power match, pipeline optimization, noise reduction, extension and used by research staff
The aspects such as life-span, will further speed up the raising of product various aspects of performance.
5) main valve manufacturer R＆D costs are reduced.For main valve manufacturer, developing a set of Valve Block Mould just can be same
When production positive flow valve and minus flow valve, reduce Innovation Input and development risk, and the mechanism that can reduce the staff, improve work
Make efficiency.It is reported that, factory building and human cost, only mould are not included, machining apparatus and test equipment can just save 30,000,000
More than.
6) main valve manufacturer's construction cycle is shortened.Because two kinds of valve bodies are general, two kinds of differences of main valve assembly are also only
It is installation plug or minus flow feedback valve at oil return opening, therefore, develop in cyclical theory of the invention than developing positive stream respectively
Amount valve and the nearly half of cycle time of minus flow valve, 2-3 was shortened to by original 3 to 5 years.
7) accelerate the emergence of domestic main valve manufacturer, be that the development of domestic project mechanical-hydraulic technology contributes.With
The technological accumulation the increasing of basis input and exchanged with external valve producer, in the last few years domestic digging machine main valve production has been opened
Begin to start to walk, the present invention must provide positive energy for the emergence of domestic main valve manufacturer.
Brief description of the drawings
Fig. 1 is profile of the invention；
Fig. 2 is the I portions enlarged drawing of Fig. 1；
Fig. 3 is the schematic diagram of positive flow valve body structure of the invention；
Fig. 4 is the schematic diagram of minus flow valve body structure of the invention；
Fig. 5 is the structural representation of main valve assembly of the invention；
Fig. 6 is that outer connector of the invention installs the structural representation after plug；
Fig. 7 is the structural representation that outer connector of the invention installs minus flow feedback valve.
In figure：1st, valve body；2nd, center bypass oil duct；3rd, modularization connection oil duct；4th, back oil road；5th, outer connector；6th, silk
It is stifled；7th, minus flow feedback valve；8th, signal port FR/FL；9th, damping hole；10th, inserted valve.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Present invention application CAST theories, carry out novelty modularization and set to the center bypass structure of oil duct 2 on valve body of main valve 1
Meter, it is each on left and right valve body 1 to draw a modularization connection oil duct 3, realize master control valve body 1 in positive flow valve and minus flow valve
It is upper general, so as to realize a kind of valve body structure and valve assembly general in positive flow system and minus flow system.
As shown in Figures 1 to 4, a kind of positive flow and minus flow universal valve body structure, including valve body 1, in being provided with valve body 1
Bypass oil duct 2, back oil road 4 and modularization connection oil duct 3, modularization connection oil duct 3 is entreated to bypass oil duct 2 and oil return with center respectively
Road 4 is connected, and modularization connection oil duct 3 is provided with outer connector 5, and plug 6 or minus flow feedback valve 7 are provided with outer connector 5,
When installing plug 6, center bypass oil duct 2 is connected oil duct 3 and is joined directly together with back oil road 4 by modularization；Minus flow feedback is installed
During valve 7, by the damping hole 9 of minus flow feedback valve 7 before oil return, minus flow feedback valve 7 passes through signal port to center bypass oil duct 2
Pressure signal and by the governor motion of pressure signal transmission to minus flow pump before FR/FL8 collection damping holes 9.
A kind of positive flow and the general valve assembly of minus flow are illustrated in figure 5, it includes two above-mentioned valve bodies for interconnecting
1, various inserted valves 10 are installed on valve body 1, inserted valve 10 include central by-passing valve, keep valve, overflow valve, straight travel valve,
Counterbalance valve, revolution pressure-gradient control valve, safety valve etc., these inserted valves 10 and other parts composition positive flow and minus flow valve for general use, altogether
With the whole motor-driven work of control.
Operation principle of the invention：
As shown in Figure 6, Figure 7, when plug 6 is installed, fluid connects oil duct 3, returns via center bypass oil duct 2, modularization
During 4 oil return of oil duct, modularization connection oil duct 3 is only played and makes the connection function of center bypass oil duct 2 and back oil road 4, constitutes positive stream
Amount valve；When minus flow feedback valve is installed, fluid is via center bypass oil duct 2, modularization connection oil duct 3, the oil return of back oil road 4
When, the damping hole 9 on minus flow feedback valve 7 is increased on modularization connection oil duct 3, so that fluid sets up pressure before oil return
Power, minus flow feedback valve 7 is flowed pressure signal transmission to negative by pressure signal before signal port FR/FL8 collection damping holes 9
Measure on the governor motion of pump.
On board a dredger, it is connected structure with leading controller, executing agency and flow pump assembly respectively for present invention application
Into positive flow and minus flow General hydraulic system.
When be linked and packed plug 6 when, flow pump assembly be positive flow pump assembly, constitute positive flow system.Positive flow system
The principle of work and power it is as follows：Control crank, produces secondary pilot pressure, pressure sensor (also can be by a series of shuttle valve) to select
Highest secondary pressure signal goes to control the stroking mechanism of positive flow pump.When handle displacement is increased, secondary pilot pressure is raised, compared with
Pressure signal high is acted on the governor motion of pump, increases pump swash plate angle, discharge capacity increase；Conversely, when handle displacement becomes
Hour, secondary pilot pressure diminishes, and the discharge capacity of pump diminishes, so as to meet the demand phase of the flow of pump and executing agency to flow
Match somebody with somebody.
When be linked and packed minus flow feedback valve 7 when, flow pump assembly be minus flow pump assembly, constitute minus flow system.When
When valve realizes the function of minus flow valve by interchangeable module, pump pressure oil bears stream by the center bypass not direct oil return of oil duct 2
Amount feedback valve 7 makes center bypass oil duct 2 be needed before oil return by a damping hole 9, and gathers damping hole 9 by signal port FR/FL8
Preceding pressure signal, on the governor motion of this pressure signal transmission to minus flow pump.Flow becomes hour needed for system actuator,
Become big through the flow of this oil return of damping hole 9, the pressure before damping hole 9 is also just raised, and the pressure of signal port FR/FL8 is applied to pump
Discharge capacity governor motion on, pump swash plate oblique angle is diminished, discharge capacity diminishes；Conversely, when flow needed for system actuator becomes big,
Flow through this oil return of damping hole 9 diminishes, and the pressure reduction before damping hole 9, the pressure signal of signal port FR/FL8 feeds back to pump
Discharge capacity governor motion on, pump swash plate oblique angle is become big, discharge capacity becomes big.
Claims (2)
1. a kind of positive flow and minus flow universal valve body structure, including valve body (1), central bypass oil is provided with the valve body (1)
Road (2) and back oil road (4), it is characterised in that：Modularization is additionally provided with valve body (1) and connects oil duct (3), the modularization connection oil
Road (3) is connected with center bypass oil duct (2) and back oil road (4) respectively, and modularization connects oil duct (3) and is provided with outer connector (5),
Plug (6) or minus flow feedback valve (7) are installed on the outer connector (5), when plug (6) are installed, center bypass oil duct (2)
Oil duct (3) is connected with back oil road (4) by modularization to be joined directly together；When minus flow feedback valve (7) are installed, center bypass oil duct
(2) by the damping hole (9) of minus flow feedback valve (7) before oil return, minus flow feedback valve (7) is adopted by signal port FR/FL (8)
Pressure signal before collection damping hole (9).
2. a kind of positive flow and the general valve assembly of minus flow, including at least one valve body (1) and the inserting on valve body (1)
Center bypass oil duct (2) and back oil road (4) are provided with valve (10), the valve body (1), it is characterised in that：In the valve body (1) also
It is provided with modularization and connects oil duct (3), the modularization connects oil duct (3) respectively with center bypass oil duct (2) and back oil road (4) even
Logical, modularization connects oil duct (3) and is provided with outer connector (5), and plug (6) or minus flow are provided with the outer connector (5)
Feedback valve (7), when installing plug (6), center bypass oil duct (2) is connected oil duct (3) directly phase with back oil road (4) by modularization
Even；When installing minus flow feedback valve (7), center bypass oil duct (2) is before oil return by the damping hole of minus flow feedback valve (7)
(9), minus flow feedback valve (7) is by pressure signal before signal port FR/FL (8) collections damping hole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437607.0A CN105003710B (en) | 2015-07-23 | 2015-07-23 | Positive flow and minus flow universal valve body structure and valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437607.0A CN105003710B (en) | 2015-07-23 | 2015-07-23 | Positive flow and minus flow universal valve body structure and valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105003710A CN105003710A (en) | 2015-10-28 |
| CN105003710B true CN105003710B (en) | 2017-06-30 |
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ID=54376497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510437607.0A Active CN105003710B (en) | 2015-07-23 | 2015-07-23 | Positive flow and minus flow universal valve body structure and valve assembly |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620370A1 (en) * | 1992-10-29 | 1994-10-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulic control valve device and hydaulically driving device |
| KR20030089551A (en) * | 2002-05-16 | 2003-11-22 | 대우종합기계 주식회사 | Damping control device in hydraulic cylinder |
| CN201306458Y (en) * | 2008-12-03 | 2009-09-09 | 徐州重型机械有限公司 | Flow control valve and hydraulic control system |
| CN102943500A (en) * | 2012-11-16 | 2013-02-27 | 无锡汇虹机械制造有限公司 | Energy-saving control method of hydraulic negative flow of excavator |
| CN103790889A (en) * | 2014-03-10 | 2014-05-14 | 浙江海宏液压科技股份有限公司 | Oil inlet valve block and compound flow control multi-way valve |
| CN204922138U (en) * | 2015-07-23 | 2015-12-30 | 山东临工工程机械有限公司 | Positive flow and burden flow valves for general use body structure and valve assembly |
-
2015
- 2015-07-23 CN CN201510437607.0A patent/CN105003710B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620370A1 (en) * | 1992-10-29 | 1994-10-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulic control valve device and hydaulically driving device |
| KR20030089551A (en) * | 2002-05-16 | 2003-11-22 | 대우종합기계 주식회사 | Damping control device in hydraulic cylinder |
| CN201306458Y (en) * | 2008-12-03 | 2009-09-09 | 徐州重型机械有限公司 | Flow control valve and hydraulic control system |
| CN102943500A (en) * | 2012-11-16 | 2013-02-27 | 无锡汇虹机械制造有限公司 | Energy-saving control method of hydraulic negative flow of excavator |
| CN103790889A (en) * | 2014-03-10 | 2014-05-14 | 浙江海宏液压科技股份有限公司 | Oil inlet valve block and compound flow control multi-way valve |
| CN204922138U (en) * | 2015-07-23 | 2015-12-30 | 山东临工工程机械有限公司 | Positive flow and burden flow valves for general use body structure and valve assembly |
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| Publication number | Publication date |
|---|---|
| CN105003710A (en) | 2015-10-28 |
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Denomination of invention: Positive flow and negative flow universal valve body structure and valve assembly Effective date of registration: 20211217 Granted publication date: 20170630 Pledgee: Industrial and Commercial Bank of China Limited Linyi Economic Development Zone sub branch Pledgor: SHANDONG LINGONG CONSTRUCTION MACHINERY Co.,Ltd. Registration number: Y2021980015222 |
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