CN105673601B - A kind of Zero-leakage hydraulic zero-bit lock - Google Patents
A kind of Zero-leakage hydraulic zero-bit lock Download PDFInfo
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- CN105673601B CN105673601B CN201410671295.5A CN201410671295A CN105673601B CN 105673601 B CN105673601 B CN 105673601B CN 201410671295 A CN201410671295 A CN 201410671295A CN 105673601 B CN105673601 B CN 105673601B
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Abstract
A kind of Zero-leakage hydraulic zero-bit lock, combined by two hydraulic control one-way valves, push rod is placed in valve set in hydraulic control one-way valve, valve assembly is placed in housing with valve, spring one end is placed in valve assembly, the other end is placed in spring base, and spring base is connected by guide sleeve with housing, and locking nut is connected with spring base.Valve assembly is by being molded PEEK particles formation sealing gasket on valve；Positioning seat withstands valve set by being threadably coupled within housing, and technique is placed on housing with plug；High peace valve and air cleaner are placed in zero-bit lock housing body, and high peace valve includes high peace valve chest, valve, spring, setting screw and locking nut, and air cleaner includes wire netting, protection cap and baffle ring.The soft seal mode that the present invention is combined using PEEK sealing gaskets with valve, the characteristics of producing elastic deformation using composite improves sealing property, and the reverse good seal performance of the sealing means can reach the requirement of zero leakage.
Description
Technical field
The present invention relates to hydraulic null lock technology field, and in particular to a kind of Zero-leakage hydraulic zero-bit lock.
Background technology
Hydraulic null lock is the flow control element of hydraulic system, is combined by two hydraulic control one-way valves, mainly and liquid
Cylinder pressure cooperating, when the obstructed hydraulic oil of control chamber, oil suction chamber and oil back chamber isolation, when control chamber leads to hydraulic oil, oil-feed
Chamber is connected with oil back chamber, and forward and reverse motion of liquid stream is controlled with this.Main performance requirements be fluid to a direction by when
The pressure loss is small, and sealing property will get well when reversely obstructed, be active in one's movements, without shock and noise during work.
Hydraulic null locks an important component as servo control mechanism, between servo valve and body, passes through
Servo control mechanism is pinned zero-bit by the mode for pinning servo control mechanism pressurized strut two cavity oil liquid, it is ensured that servo control mechanism also can when not working
Engine is pinned into zero-bit.
The main hard sealing structure form and the radial seal structure of the vulcanization of rubber using cone valve type of current hydraulic null lock
Form.Valve is complicated for the hard sealing structure of cone valve, and Geometrical Tolerance Principle is tight, high processing costs, it is impossible to meet wanting for zero leakage
Ask, be mainly used in the occasion not high to seal request.Easily there is frictional force for the radial seal structure of vulcanization rubber in valve
The problem of bigger than normal, overlap, it is mainly used in service life requirement not long occasion.
Therefore, solving hydraulic null lock, reversely sealing zero leakage, service life length, compact conformation, cost be low and work
The problem of performance is stable, it is necessary to design a kind of sealing structure scheme of zero leakage.
The content of the invention
In view of the deficienciess of the prior art, the invention provides a kind of Zero-leakage hydraulic zero-bit lock, the hydraulic lock it is close
The seal form that seal structure is combined using the PEEK sealing gaskets being molded on valve with stainless steel, efficiently solves hydraulic lock zero and lets out
The problem of leakage, it is particularly suitable for use in the hydraulic circuit for being reversely sealed with particular/special requirement.
In order to reach foregoing invention purpose, the invention provides a kind of Zero-leakage hydraulic zero-bit lock, by two fluid-control one-ways
Valve is combined, and hydraulic control one-way valve includes：Housing, plug, positioning seat, push rod, valve set, air cleaner, valve assembly, height
Pacify valve, spring, guide sleeve, spring base, locking nut；Push rod is placed in valve set, and valve assembly is placed in housing with valve；
Spring one end is placed in valve assembly, and the other end is placed in spring base；Spring base is connected by guide sleeve with housing, locking screw
Mother is connected with spring base；Positioning seat withstands valve set, and by being threadably coupled within housing, the plug is placed in housing；
High peace valve and air cleaner are placed in zero-bit lock housing body；Valve assembly forms close under the pretightning force effect of spring with valve set
Envelope is secondary, and equipped with sealing ring and back-up ring, plays sealing function to going out oil pocket fluid, prevent out that oil pocket and oil suction chamber fluid are mutual
Ooze.
In some embodiments, on valve assembly by the way of PEEK injections, PEEK sealing gaskets are formed, are bonded in valve
Together.
Further, being formed between valve assembly and valve on soft sealing structure, the valve assembly has PEEK sealing gaskets,
Sealing gasket forms sealing pair with valve set in the presence of spring force, and when liquid stream goes out from A to be gone out to flow into B, the valve assembly exists
Seal pressure is formed in the presence of hydraulic pressure and spring force, so as to increase reversely sealedly effect.
Further, the guidance mode of valve assembly use forward type and rear-mounted dual action axial structure, valve, valve set and
Guide sleeve is coordinated using gap.
Relative to prior art, its advantage and effect are：
1st, PEEK sealing gaskets and stainless steel combination sealing mode are molded using valve, the seal form is prevented effectively from hard sealing
Defect, metal hard-sealing during long period use easily occur creep, decline sealing property.Form the bar of zero leakage
Part is very close to each other, and has in sealing surfaces sufficiently large contact, i.e. seal pressure, and seal pressure is bigger, and sealing is just
It is more reliable.
2nd, PEEK gasket structures are molded using valve, the characteristics of mainly producing elastic deformation using composite improves
Sealing property.Valve is soft and valve set is rigid, and under spring force, the PEEK sealing gaskets on valve are in valve port
Small deformation occurs for place, one of impression occurs, processing and build-up tolerance is made up by the deformation of valve, while in contact surface
It is upper to form certain seal pressure.
3rd, valve uses preposition and rear-mounted twin shaft guide frame form, is coordinated between valve and valve set using gap,
Coordinated between valve and guide sleeve using gap, the surface finish requirements of, valve set cylindrical to valve and guide sleeve endoporus reduce,
Processing cost is substantially reduced, and service behaviour is steady；
4th, valve, valve set and guide sleeve are coordinated using gap, and forward direction can play guide effect when opening, and reduce fluid
The noise produced when being impacted to valve, working stability improves the reliability of zero-bit lock.
5th, using dual hydraulic control one-way valve fabricated structure, with size is small, lightweight, compact conformation, easy to operate, readily removable
The features such as dress, it is suitable for using on space structure compact systems.
With reference to accompanying drawing, other aspects of the present invention can be understood according to the description that present subject matter is illustrated by way of example hereafter
And advantage.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the Zero-leakage hydraulic zero-bit lock construction schematic diagram of the present invention；
Fig. 2 is the partial schematic diagram of hydraulic control one-way valve of the embodiment of the present invention.
Embodiment
Now by describing the preferred embodiment according to the present invention in detail, to be further elaborated to the present invention.This reality
Apply example lower premised on technical solution of the present invention to be implemented, give detailed embodiment and specific operating process.
It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make
Several modifications and improvements, these belong to protection scope of the present invention.
As depicted in figs. 1 and 2, this implementation is locked there is provided a kind of Zero-leakage hydraulic zero-bit, is combined by two hydraulic control one-way valves
Form, with size is small, lightweight, compact conformation, it is easy to operate, easy to assemble the features such as, be suitable for space structure compact systems
On use.Hydraulic control one-way valve includes：Housing 1, plug 2, positioning seat 3, push rod 4, valve set 5, air cleaner 6, valve assembly
7th, high peace valve 8, spring 11, guide sleeve 12, spring base 13, locking nut 14, sealing ring 9 and back-up ring 10.Wherein, push rod 4 is put
In in valve set 2, valve assembly 7 is placed in housing 1 with valve set 2, and the one end of spring 11 is placed in valve assembly 7, and the other end is put
In in spring base 13, spring base 13 is connected by guide sleeve 12 with housing 1, and locking nut 14 is connected with spring base 13.It is living
Door component 7 is to be moulded in by PEEK sealing gaskets on valve, forms PEEK sealing gaskets, is bonded together with valve, the valve
Being formed between component 7 and valve on soft sealing structure, the valve assembly 7 has PEEK sealing gaskets, close under spring force
Packing forms sealing pair with valve set 5, and when liquid stream goes out from A to be gone out to flow into B, the valve assembly 7 is in hydraulic pressure and the power of spring 11
In the presence of form seal pressure so that increase reversely sealedly effect.Positioning seat 3 withstands valve set 5 by being threadably coupled within
On housing 1, technique plug 2 is placed in housing 1.High peace valve 8 and air cleaner 6 are placed in zero-bit lock housing body 1.Control chamber is led to
During hydraulic oil, push rod 4 withstands valve assembly 7, overcomes the pretightning force of spring 11, and oil suction chamber is connected with going out oil pocket.Control chamber is obstructed
When oily, valve assembly 7 forms sealing pair under the pretightning force effect of spring 11 with valve set 5, and sealing is played to going out oil pocket fluid
Effect, prevents out oil pocket and oil suction chamber fluid from mutually oozing.
Sulculus is provided with the valve set 5, push rod 4 is placed in valve and covered in 5 sulculuses, valve is promoted under control fluid effect
Component 7 opens hydraulic lock, so that hydraulic coupling gets the effect of proportional zoom
For lifting service behaviour, the guidance mode of valve assembly 7 uses forward type and rear-mounted dual action axial structure, valve
Coordinated between valve set 5 using gap, coordinated between valve and guide sleeve 12 using gap, valve cylindrical to valve covers 5 and
The surface finish requirements of the endoporus of guide sleeve 12 reduce, and processing cost is substantially reduced, and service behaviour is steady.
The course of work of the present embodiment is：
Before hydraulic null lock is opened, valve assembly 75 is brought into close contact under the pretightning force effect of spring 11 with valve set, A and
B oil suction chambers and to go out oil pocket obstructed, when fluid starts to act on push rod 4 by control chamber, hydraulic coupling is more than the pretension of spring 11
During power, valve assembly 7 is opened, and fluid enters oil pocket from oil-feed A chambers, is flowed out by the oil outlet of housing 1.B chambers and A chamber works
Make that principle is similar, spring base 13 can control the Opening pressure that zero-bit is locked, it is ensured that the synchronism of A chambers and B chamber Opening pressures.When going out
During oil pocket pressure rise, high peace valve 8 is started working, and protects fuel-displaced lumen road not to be damaged.It is unnecessary that air cleaner 6 is mainly prevented
Thing enters push rod 4 with the cavity of the formation of valve assembly 7, causing push rod 4 and the clamping stagnation of valve assembly 7.When fluid reverse flow,
Valve assembly 7 is made sealing surface press tighter and tighter the hydraulic coupling of valve assembly 7 by the pretightning force and fluid of spring 11, so as to increase
Reversely sealed effect, reaches the requirement of zero leakage.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Claims (5)
1. a kind of Zero-leakage hydraulic zero-bit lock, it is characterised in that combined by two hydraulic control one-way valves, hydraulic control one-way valve bag
Include：Housing, plug, positioning seat, push rod, valve set, air cleaner, valve assembly, Gao Anfa, spring, guide sleeve, spring
Seat, locking nut；
The push rod is placed in valve set, and valve assembly is placed in housing with valve；
The spring one end is placed in valve assembly, and the other end is placed in spring base；
The spring base is connected by guide sleeve with housing, and locking nut is connected with spring base；
The positioning seat withstands valve set, and by being threadably coupled within housing, the plug is placed in housing；
The high peace valve and air cleaner are placed in zero-bit lock housing body；
The valve assembly forms sealing pair under the pretightning force effect of spring with valve set, and equipped with sealing ring and back-up ring,
Sealing function is played to going out oil pocket fluid, prevents out oil pocket and oil suction chamber fluid from mutually oozing；
The valve assembly forms PEEK sealing gaskets by the way of PEEK injections, and PEEK sealing gaskets are bonded together with valve；
Being formed between valve assembly and the valve set has PEEK sealing gaskets on soft sealing structure, valve assembly, in spring force
The lower PEEK sealing gaskets of effect form sealing pair with valve set, when liquid stream is flowed into from two fluid-control one-way valve outlets, the valve
Component forms seal pressure in the presence of hydraulic pressure and spring force, so as to increase reversely sealedly effect.
2. Zero-leakage hydraulic zero-bit lock according to claim 1, it is characterised in that be provided with groove, push rod in the valve set
It is placed in valve grooving, promotes valve assembly to open hydraulic lock under control fluid effect, so that hydraulic coupling plays ratio contracting
The effect put.
3. Zero-leakage hydraulic zero-bit lock according to claim 1, it is characterised in that the guidance mode of the valve assembly is adopted
With forward type and rear-mounted dual action axial structure.
4. Zero-leakage hydraulic zero-bit lock according to claim 1, it is characterised in that the valve set is consolidated using positioning seat
It is fixed, use and be threadedly coupled between housing.
5. Zero-leakage hydraulic zero-bit lock according to claim 1, it is characterised in that the valve assembly, valve cover and led
Coordinated to set using gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671295.5A CN105673601B (en) | 2014-11-21 | 2014-11-21 | A kind of Zero-leakage hydraulic zero-bit lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671295.5A CN105673601B (en) | 2014-11-21 | 2014-11-21 | A kind of Zero-leakage hydraulic zero-bit lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673601A CN105673601A (en) | 2016-06-15 |
| CN105673601B true CN105673601B (en) | 2017-11-07 |
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ID=56957689
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410671295.5A Active CN105673601B (en) | 2014-11-21 | 2014-11-21 | A kind of Zero-leakage hydraulic zero-bit lock |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658090A (en) * | 1970-04-27 | 1972-04-25 | Marotta Scientific Controls | Hydraulic lock valve with flow control |
| CN2763520Y (en) * | 2005-01-23 | 2006-03-08 | 洪凌海 | Hydraulic controlled check valve with working pressure of 40 MPa |
| CN2830641Y (en) * | 2005-07-08 | 2006-10-25 | 齐莹 | Valve box of hydraulic prop |
| CN201065765Y (en) * | 2007-08-15 | 2008-05-28 | 浙江慧丰机械有限公司 | Full-mechanized hydraulic support backplate bidirectional lock |
| WO2010094411A1 (en) * | 2009-02-19 | 2010-08-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Pilot operated check valve |
| CN202510138U (en) * | 2011-12-01 | 2012-10-31 | ***液压有限公司 | Pilot operated check valve capable of feeding liquid rapidly |
| CN202756002U (en) * | 2012-07-19 | 2013-02-27 | 山东能源机械集团天玛电液控制装备工程有限公司 | Two-way lockup valve used for hydraulic support |
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| CN103498825A (en) * | 2013-10-12 | 2014-01-08 | 上海新跃仪表厂 | Zero leakage inserting installation hydraulic control one-way valve |
| CN204386626U (en) * | 2014-09-18 | 2015-06-10 | 中国矿业大学(北京) | Dual control hydraulic lock |
-
2014
- 2014-11-21 CN CN201410671295.5A patent/CN105673601B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658090A (en) * | 1970-04-27 | 1972-04-25 | Marotta Scientific Controls | Hydraulic lock valve with flow control |
| CN2763520Y (en) * | 2005-01-23 | 2006-03-08 | 洪凌海 | Hydraulic controlled check valve with working pressure of 40 MPa |
| CN2830641Y (en) * | 2005-07-08 | 2006-10-25 | 齐莹 | Valve box of hydraulic prop |
| CN201065765Y (en) * | 2007-08-15 | 2008-05-28 | 浙江慧丰机械有限公司 | Full-mechanized hydraulic support backplate bidirectional lock |
| WO2010094411A1 (en) * | 2009-02-19 | 2010-08-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Pilot operated check valve |
| CN202510138U (en) * | 2011-12-01 | 2012-10-31 | ***液压有限公司 | Pilot operated check valve capable of feeding liquid rapidly |
| CN202756002U (en) * | 2012-07-19 | 2013-02-27 | 山东能源机械集团天玛电液控制装备工程有限公司 | Two-way lockup valve used for hydraulic support |
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| CN103498825A (en) * | 2013-10-12 | 2014-01-08 | 上海新跃仪表厂 | Zero leakage inserting installation hydraulic control one-way valve |
| CN204386626U (en) * | 2014-09-18 | 2015-06-10 | 中国矿业大学(北京) | Dual control hydraulic lock |
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| CN105673601A (en) | 2016-06-15 |
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