CN106438545B - Load-transducing type balanced valve - Google Patents
Load-transducing type balanced valve Download PDFInfo
- Publication number
- CN106438545B CN106438545B CN201610905053.7A CN201610905053A CN106438545B CN 106438545 B CN106438545 B CN 106438545B CN 201610905053 A CN201610905053 A CN 201610905053A CN 106438545 B CN106438545 B CN 106438545B
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- transducing
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- 238000007789 sealing Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of load-transducing type balanced valve, including valve pocket, the front portion of valve pocket is provided with preceding valve pocket chamber, the rear portion of valve pocket is provided with rear valve pocket chamber, main valve chamber includes leading portion cavity, stage casing cavity and back segment cavity, main valve plug is provided with main valve chamber, valve pocket intracavitary is provided with the back-moving spring abutted with main valve plug front end and the spring base abutted with back-moving spring front end afterwards, the front portion of stage casing cavity is provided with unilaterally connected from the front to the back and the check valve of break-make is controlled by main valve plug, the load port connected with stage casing chamber rear is offered on valve body, the oil-out connected with leading portion chamber rear is offered on valve body, the balanced valve is provided with the load-transducing oil duct for connecting load port with preceding valve pocket chamber, the plunger adjusting part that the load-transducing hydraulic pressure oil transmitted by load-transducing oil duct drives is provided between preceding valve pocket chamber and rear valve pocket chamber.The present invention small load or it is unloaded when, pilot pressure will reduce and reduce with load, reach the purpose of energy-conservation.
Description
Technical field
The present invention relates to hydraulic valve, and in particular to balanced valve.
Background technology
Balanced valve, also known as load movement control valve, also there is title motion control valve, by increasing back during load movement
Oily back pressure, to realize balanced load, held stationary moves, and because pilot port and working hole connect the work of executing agency respectively
Mouthful, closed-loop control, effective regime flow can be formed, thus play stabilized speed function.Because balanced valve mainly increases back pressure, and
And set pressure is generally bigger than maximum load by 30%~50%, thus balanced valve is to belong to dissipative cell in systems, is passed through
The consumption of power come obtain stabilization.Currently available technology is to fix setting pressure, generally 1.3~1.5 times of maximum loads, when
Load similarly needs the so big back pressure of full load when diminishing or be unloaded, thus must increase pilot pressure, is set with opening
Fixed pressure, this will cause unnecessary idle work to export, causes energy dissipation.
Therefore, current balanced valve there is in use, 1, setting pressure can not change with the size of load；
2nd, pilot control pressure changes with the change of load；3rd, need to preset pressure according to load；4th, power consumption is big.
The content of the invention
The technical problems to be solved by the invention are just to provide a kind of load-transducing type balanced valve so that main valve plug resets bullet
The setting pressure of spring changes with the change of load.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Load-transducing type balanced valve, including provided with master
The valve body of valve pocket and the valve pocket docked with main valve chamber front opening, the front portion of the valve pocket are provided with preceding valve pocket chamber, the valve pocket
Rear portion is provided with rear valve pocket chamber, and the main valve chamber includes leading portion cavity, stage casing cavity and back segment cavity, before the valve pocket is provided with insertion
The cylinder section of section cavity, is provided with main valve plug in the main valve chamber, it is described after valve pocket intracavitary provided with being answered with what main valve plug front end abutted
Position spring and the spring base that is abutted with back-moving spring front end, the front portion of the stage casing cavity provided with unilaterally connected from the front to the back and by
Main valve plug controls the check valve of break-make, offers the load port connected with stage casing chamber rear on the valve body, on the valve body
The oil-out connected with leading portion chamber rear is offered, the balanced valve is provided with the load-transducing for connecting load port with preceding valve pocket chamber
Oil duct, the load-transducing hydraulic pressure oil transmitted by load-transducing oil duct is provided between the preceding valve pocket chamber and rear valve pocket chamber
The plunger adjusting part of driving, the plunger adjusting part act on and back-moving spring are adjusted multiple so as to realize with spring base
The setting pressure of position spring changes and changed with load pressure.
Preferably, the middle part of the cylinder section is provided with the sealing flange that cooperation is slidingly sealed with leading portion cavity internal perisporium, institute
State valve pocket and the stud section being connected with main valve chamber mouth thread is provided with front side of cylinder section, the leading portion cavity is in sealing flange and spiral shell
Annular housing before being formed between shell of column, the leading portion cavity are provided with rear annular housing on rear side of sealing flange.
Preferably, the load-transducing oil duct includes anterior axially axially extending section and axial direction from load port to valve body
The front end of section is vertical and the radial section that connect with preceding annular housing, the stud section are communicated with preceding annular housing and preceding valve pocket chamber
Intercommunicating pore.
Preferably, the first damping screw plug is provided with the radial section.
Preferably, the front portion of the main valve plug is provided with first conical surface coordinated with check valve, and the main valve plug is in the first cone
Second conical surface being oppositely arranged with first conical surface is provided with rear side of face, the rear portion of the main valve plug is provided with to be slidingly sealed with back segment cavity
Cylinder seal section, second conical surface is A1 by the hydraulic action area of the hydraulic pressure oil of load port, first conical surface
Hydraulic action area by the hydraulic pressure oil of load port is A2 so that hydraulic pressure oil active area of the main valve plug by load port
For A2-A1, the plunger adjusting part is A3 by the hydraulic action area of hydraulic pressure oil, and A3 is 1.3 times of A2-A1.
Preferably, the valve pocket is provided with plunger hole, the plunger adjusting part bag between preceding valve pocket chamber and rear valve pocket chamber
The plunger that setting is slidingly sealed in plunger hole is included,
Preferably, the plunger adjusting part also includes the steel ball that is set between spring base and plunger, the spring base and
Plunger is provided with the taper surface with steel ball mating spherical surfaces.
Preferably, steel ball is provided between the spring base and plunger, the spring base and plunger are provided with matches somebody with somebody with steel ball sphere
The taper surface of conjunction.
Preferably, the check valve includes valve seat and the one-way valve spring abutted with valve seat, the valve seat and stage casing cavity
Internal perisporium sealing coordinates, and the one-way valve spring abuts with back-up ring, and the stage casing cavity internal perisporium is provided with spacing to back-up ring progress
Limited step.
Preferably, the rear portion of the valve body is provided with valve body back cavity and the guide connected with valve body back cavity a bite, guide two
Mouthful, the valve body is provided with stepped hole between back segment cavity and valve body back cavity, the second damping screw plug is provided with the stepped hole.
Preferably, the oral area of the preceding valve pocket chamber is provided with sealing screw plug.
The present invention is provided with the load-transducing oil duct for connecting load port with preceding valve pocket chamber, the driving of load-transducing hydraulic pressure oil
Plunger adjusting part, act on plunger adjusting part and spring base and back-moving spring be adjusted so that back-moving spring
Setting pressure changes with the change of load.Pilot pressure also changes with the size variation of load simultaneously, so that small
When loading or be unloaded, pilot pressure will reduce and reduce with load, reach the purpose of energy-conservation.
In addition, the active area of spring cavity where back-moving spring is 1.3 times of main valve plug active area, so as to back-moving spring
User can not needed to set and adjust.
Therefore, the beneficial effects of the invention are as follows：
1st, loaded self-adaptive, without presetting pressure；2nd, back pressure is higher by 30% than load forever, and security performance is high；3、
Shake it is small, without uttering long and high-pitched sounds；4th, it can save energy 15% or so.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the load-transducing type balanced valve profile of the present invention；
Fig. 2 is the load-transducing type balanced valve hydraulic schematic diagram of the present invention；
Fig. 3 is the load-transducing type balanced valve partial enlarged drawing of the present invention；
Fig. 4 a are the fundamental diagrams of common balanced valve；
Fig. 4 b are the fundamental diagrams of the load-transducing type balanced valve of the present invention.
Embodiment
Present invention is mainly used for the various operating modes for loading and changing greatly, for example there is unloaded and fully loaded, operating pressure when unloaded
It is relatively low, when it is fully loaded be operating pressure higher occasion again, consumed in unloaded or load compared with one-hour rating larger.Specifically lead
If the crane gear driven with hydraulic system, such as straddle truck, wheel-mounted crane, agricultural machinery etc. in lifting appliance.
As shown in Figure 1 to Figure 3, load-transducing type balanced valve, including the valve body 2 provided with main valve chamber and opened with main valve chamber front portion
The valve pocket 6 of mouth docking, the front portion of the valve pocket are provided with preceding valve pocket chamber, and the rear portion of the valve pocket is provided with rear valve pocket chamber, the preceding valve
The oral area of mantle cavity is provided with sealing screw plug 13.
The main valve chamber includes leading portion cavity, stage casing cavity and back segment cavity, and the valve pocket is provided with and main valve chamber oral area spiral shell
The stud section of line connection and the cylinder section for inserting leading portion cavity, the middle part of the cylinder section is provided with to be slided with leading portion cavity internal perisporium
The sealing flange that dynamic sealing coordinates, the leading portion cavity is provided with preceding annular housing between sealing flange and stud section, before described
Section cavity is provided with rear annular housing on rear side of sealing flange.
Main valve plug 3 is provided with the main valve chamber, the rear valve pocket intracavitary is provided with the back-moving spring 8 abutted with main valve plug front end
And the spring base 10 abutted with back-moving spring front end, the front portion of the stage casing cavity are provided with unilaterally connected from the front to the back and by main valve
Core controls the check valve 5 of break-make, offers the load port C2 connected with stage casing chamber rear on the valve body, is opened on the valve body
Provided with the oil-out V2 connected with leading portion chamber rear.
The balanced valve is provided with the load-transducing oil duct 7 for connecting load port C2 with preceding valve pocket chamber, and the preceding valve pocket chamber is with after
The plunger adjusting part that the load-transducing hydraulic pressure oil transmitted by load-transducing oil duct drives, institute are provided between valve pocket chamber
State plunger adjusting part and spring base 10 act on and back-moving spring 8 be adjusted so as to realize the setting pressure of back-moving spring with
Load pressure changes and changed.
Before the load-transducing oil duct 7 is including anterior axially extending section of the axial direction from load port to valve body and axial direction part
End is vertical and the radial section that connect with preceding annular housing, and the stud section is communicated with connecting for preceding annular housing and preceding valve pocket chamber
Hole, the radial section is interior to be provided with the first damping screw plug 9.First damping screw plug 9 is dynamic antivibration, can when load pressure is mutated
To reduce compression shock, cushioning effect is played.
The valve pocket is provided with plunger hole between preceding valve pocket chamber and rear valve pocket chamber, and the plunger adjusting part is included in plunger
Hole is slidingly sealed the plunger 12 of setting, and the plunger adjusting part also includes the steel ball 11 set between spring base and plunger, institute
Spring base and plunger are stated provided with the taper surface with steel ball mating spherical surfaces.Steel ball 11 and plunger 12 form back-moving spring float conditions dress
Put, when back-moving spring 8 weakens the swing of spring radial direction in compression process, less pressure shake and utter long and high-pitched sounds etc. it is unstable because
Element.
The front portion of the main valve plug is provided with first conical surface coordinated with check valve, and the main valve plug is set on rear side of first conical surface
There is second conical surface being oppositely arranged with first conical surface, rear portion and the back segment cavity of the main valve plug are slidingly sealed, second cone
Face is A1 by the hydraulic action area of the hydraulic pressure oil of C2 mouths, and first conical surface is made by the hydraulic pressure of the hydraulic pressure oil of C2 mouths
It is A2 with area.Main valve plug 3 has sliding poppet valve core characteristic, is sealed at two-stage concentric two；Make liquid of the primary spools 3 by load port C2
Pressure pressure oil active area is annulus area (A2-A1), by corrective action area, relative can reduce the firm of back-moving spring 8
Degree, so that back-moving spring design is not limited by a space and does not reach required rigidity.
In addition, the plunger is A3 by the hydraulic action area of hydraulic pressure oil, and A3 is 1.3 times of A2-A1.Main valve plug
3, back-moving spring 8, spring base 10, steel ball 11, plunger 12 can regard as main valve plug entirety, main valve plug entirety rear end is by Pt (A2-
A1 hydraulic coupling), front end are more than the power that is subject to of rear end, thus first conical surface of main valve plug 3 by PtA3=1.3Pt (A2-A1)
It will be closely against on the valve seat 5 of check valve, form sealing well.
Such as Fig. 4 a, common balanced valve once sets pressure P according to load G sizetAfterwards, if declined in weight, it is assumed that
Balanced valve pilot ratio is K, now PiIt has to be larger than (Pt-Ps)/k values could open balanced valve so that weight declines, it can be seen that
Pt is a definite value, usually the 1.3 of maximum load times, i.e. 1.3PsmaxOnce when unloaded, now Ps=0, i.e. Pi=Pt/
k.If using the invention balanced valve.Such as Fig. 4 b, due to PtWith PsChange and change and PtValue is equal to 1.3P forevers, because
And Pi=(Pt-Ps)/k=(1.3Ps-Ps)/k=0.3Ps/ k, is well imagined, when load is unloaded, the pressure required for Pi will
It is very small, that is to say, that the pressure of now pump output is very small, so as to reach energy-saving effect.
Plunger 12 combines to form action tank with valve pocket 6, active area A3, is just 1.3 times of A2-A1 areas, steel
Ball 11 heads on spring base 10, and spring base 10 press against back-moving spring 8, equivalent to regulation spring.C2 mouth oil liquid pressures pass through overload
Valve pocket chamber before sense oil duct 7 is delivered to, is converted into thrust, the thrust magnitude is by plunger 12：F=PC2× A3=PC2 × 1.3 (A2-
A1), i.e., 1.3 times of main valve plug 3 are acted on equal to C2 mouth pressure.So back-moving spring set pressure is forever equal to valve port pressure
1.3 again.
The check valve includes valve seat 5 and the one-way valve spring abutted with valve seat, the valve seat and stage casing cavity internal perisporium
Sealing coordinates, and the one-way valve spring abuts with back-up ring 4, and the stage casing cavity internal perisporium is provided with spacing to back-up ring progress spacing
Step.
The rear portion of the valve body is provided with valve body back cavity and the two mouthfuls of V1 of guide's a bite C1, guide connected with valve body back cavity,
The valve body is provided with stepped hole between back segment cavity and valve body back cavity, and the second damping screw plug 1 is provided with the stepped hole.The
Two damping screw plugs 1 are dynamic antivibration, when guide oil pressure starts suddenly, it is possible to reduce impact, play cushioning effect.
The load-transducing type balanced valve of the present invention can balance the load in hydraulic system, form unidirectional, throttling, overflow etc.
Function, and balanced valve setting pressure can change with load pressure and change self adjustment, ensure back-moving spring compression
Power is 1.3 times that load pressure acts on main valve plug power forever, and pressure produced by that is to say back-moving spring is load pressure forever
1.3 times.Have the advantages that it is simple in construction, without regulation, safety, energy-conservation.
Claims (10)
1. load-transducing type balanced valve, it is characterised in that：Docked including the valve body provided with main valve chamber and with main valve chamber front opening
Valve pocket, the front portion of the valve pocket is provided with preceding valve pocket chamber, and the rear portion of the valve pocket is provided with rear valve pocket chamber, before the main valve chamber includes
Section cavity, stage casing cavity and back segment cavity, the valve pocket are provided with the cylinder section of insertion leading portion cavity, master are provided with the main valve chamber
Valve element, the rear valve pocket intracavitary are provided with the back-moving spring abutted with main valve plug front end and the spring abutted with back-moving spring front end
Seat, the front portion of the stage casing cavity are provided with unilaterally connected from the front to the back and the check valve of break-make, the valve body are controlled by main valve plug
On offer the load port connected with stage casing chamber rear, offered on the valve body connected with leading portion chamber rear it is fuel-displaced
Mouthful, the balanced valve is provided with the load-transducing oil duct that connects load port with preceding valve pocket chamber, the preceding valve pocket chamber and rear valve pocket chamber it
Between be provided with the plunger adjusting part that the load-transducing hydraulic pressure oil transmitted by load-transducing oil duct drives, the plunger is adjusted
Section component is acted on and back-moving spring is adjusted so as to realize that the setting pressure of back-moving spring becomes with load pressure with spring base
Change and change.
2. load-transducing type balanced valve according to claim 1, it is characterised in that：The middle part of the cylinder section be provided with it is preceding
Section cavity internal perisporium is slidingly sealed the sealing flange of cooperation, and the valve pocket is provided with and main valve chamber front opening spiral shell on front side of cylinder section
The stud section of line connection, annular housing before the leading portion cavity is formed between sealing flange and stud section, the leading portion cavity
Rear annular housing is provided with rear side of sealing flange.
3. load-transducing type balanced valve according to claim 2, it is characterised in that：The load-transducing oil duct is included from negative
Mouth is carried to valve body is anterior axially axially extending section, and the radial section that with preceding annular housing connects vertical with the front end of axial direction part,
The intercommunicating pore of annular housing and preceding valve pocket chamber before the stud section is communicated with.
4. load-transducing type balanced valve according to claim 3, it is characterised in that：The first damping is provided with the radial section
Screw plug.
5. the load-transducing type balanced valve according to any one of Claims 1-4, it is characterised in that：Before the main valve plug
Portion is provided with first conical surface coordinated with check valve, and the main valve plug is provided with what is be oppositely arranged with first conical surface on rear side of first conical surface
Second conical surface, the rear portion of the main valve plug are provided with the cylinder seal section being slidingly sealed with back segment cavity, and second conical surface is by negative
The hydraulic action area for carrying the hydraulic pressure oil of mouth is A1, hydraulic action of first conical surface by the hydraulic pressure oil of load port
Area is A2 so that main valve plug is A2-A1 by the hydraulic pressure oil active area of load port, and the plunger adjusting part is by hydraulic pressure
The hydraulic action area of pressure oil is A3, and A3 is 1.3 times of A2-A1.
6. load-transducing type balanced valve according to claim 5, it is characterised in that：The valve pocket is in preceding valve pocket chamber and rear valve
Plunger hole is provided between mantle cavity, the plunger adjusting part is included in the plunger that plunger hole is slidingly sealed setting.
7. load-transducing type balanced valve according to claim 6, it is characterised in that：The plunger adjusting part also includes bullet
The steel ball set between spring abutment and plunger, the spring base and plunger are provided with the taper surface with steel ball mating spherical surfaces.
8. load-transducing type balanced valve according to claim 1, it is characterised in that：The check valve includes valve seat and and valve
The one-way valve spring that seat abuts, the valve seat coordinate with the sealing of stage casing cavity internal perisporium, and the one-way valve spring abuts with back-up ring,
The stage casing cavity internal perisporium, which is provided with, carries out spacing limited step to back-up ring.
9. load-transducing type balanced valve according to claim 1, it is characterised in that：After the rear portion of the valve body is provided with valve body
Chamber and the guide's a bite connected with valve body back cavity, two mouthfuls of guide, the valve body are provided between back segment cavity and valve body back cavity
Stepped hole, the second damping screw plug is installed in the stepped hole.
10. load-transducing type balanced valve according to claim 1, it is characterised in that：The oral area of the preceding valve pocket chamber is provided with
Seal screw plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905053.7A CN106438545B (en) | 2016-10-17 | 2016-10-17 | Load-transducing type balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905053.7A CN106438545B (en) | 2016-10-17 | 2016-10-17 | Load-transducing type balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438545A CN106438545A (en) | 2017-02-22 |
| CN106438545B true CN106438545B (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610905053.7A Active CN106438545B (en) | 2016-10-17 | 2016-10-17 | Load-transducing type balanced valve |
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| CN (1) | CN106438545B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100771B (en) * | 2017-05-15 | 2023-06-23 | 重庆红江机械有限责任公司 | Micro-injection common rail oil sprayer |
| CN107989840B (en) * | 2017-11-23 | 2020-08-04 | 台州市路桥区嘉伟鞋帽厂 | Damping control valve |
| CN108869435A (en) * | 2018-07-20 | 2018-11-23 | 佛山信卓派思机械科技有限公司 | A kind of load-transducing type balanced valve |
| CN108930681B (en) * | 2018-08-21 | 2020-09-29 | 德维阀门铸造（苏州）股份有限公司 | Sectional control's balanced valve |
| CN108953267B (en) * | 2018-08-22 | 2020-08-14 | 上海昂极仪表科技有限公司 | Flow type balance valve |
| CN109555745B (en) * | 2018-12-28 | 2023-11-03 | 浙江三尚智迪科技有限公司 | pressure control valve |
| CN113833709B (en) * | 2021-11-25 | 2022-02-25 | 江苏汇智高端工程机械创新中心有限公司 | Adjustable load pressure compensation balance system, end cover and balance valve |
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|---|---|---|---|---|
| DE102007054135A1 (en) * | 2007-11-14 | 2009-05-20 | Hydac Filtertechnik Gmbh | Hydraulic valve device |
| CN101943187A (en) * | 2009-07-10 | 2011-01-12 | 上海立新液压有限公司 | One-way balancing valve with brake unlocking port |
| DE202010005070U1 (en) * | 2010-04-16 | 2010-07-08 | BLASBERG GmbH Präszisionstechnik | hydraulic valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106438545A (en) | 2017-02-22 |
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