CN104763822B - Load maintaining valve - Google Patents
Load maintaining valve Download PDFInfo
- Publication number
- CN104763822B CN104763822B CN201510193345.8A CN201510193345A CN104763822B CN 104763822 B CN104763822 B CN 104763822B CN 201510193345 A CN201510193345 A CN 201510193345A CN 104763822 B CN104763822 B CN 104763822B
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- Prior art keywords
- valve
- oil
- valve body
- valve element
- cavity
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Classifications
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- 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
- F15B13/025—Pressure reducing valves
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- Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a load maintaining valve. The load maintaining valve solves the problems that a valve in a large mechanical device does not have the load maintaining function, and certain potential safety hazards exist in work. The load maintaining valve comprises a first valve body, a first valve element, a first elastic part, a second valve body, a second valve element and a second elastic part. A first oil inlet, a first oil outlet and a containing cavity are formed in the first valve body, the first valve element is arranged in the containing cavity and divides the containing cavity into a first oil inlet cavity, a first oil outlet cavity and a first pressure stabilizing cavity. The first elastic part has the movement trend enabling the first valve element and the first valve body to be sealed, and the first oil outlet cavity is communicated with the first pressure stabilizing cavity. The second valve body is provided with a second oil inlet, an oil drainage port and a communication cavity. The second valve element is arranged in the communication cavity, and the communication cavity is communicated with the first pressure stabilizing cavity through a communication hole. The load maintaining valve has the advantages of being simple in structure, high in safety, reliable in action, convenient to assemble, good in performance and the like.
Description
Technical field
The present invention relates to a kind of valve is and in particular to a kind of load holding valve.
Background technology
In engineering machinery and building machinery field, there is a lot of equipment such as machine such as excavator, loader, the busy excavator in two
The oil cylinder of tool will bear load, and oil cylinder needs to have load and keeps function.Existing valve has leakage problem at work,
Weight is heavier, and load in work keeps performance poorer.Such big machinery action manipulates frequently simultaneously, and in order to avoid system
The pressure loss is excessive and system heat generation amount is excessive, therefore can not increase balanced valve on loop, thus avoiding pressure oil output
Under-supply.
Content of the invention
Do not possess load holding function for solving the valve in the medium-and-large-sized plant equipment of background technology, exist certain in work
The problem of potential safety hazard, the present invention provides a kind of load holding valve.
The technical scheme is that a kind of load holding valve, including the first valve body, the first valve element, the first elastic component,
Two valve bodies, the second valve element and the second elastic component, the first described valve body is provided with the first oil-in, the first oil-out and houses
Chamber, the first described valve element is separated into the first oil suction chamber, first goes out oil pocket and the first voltage stabilizing located at accommodating intracavity and by containing cavity
Chamber, the first described valve element there is the primary importance with the first valve body phase sealing and backed down by hydraulic oil so that the first oil suction chamber with
First goes out the second position that oil pocket is connected, and the first described elastic component has the first valve element and the first valve body phase are sealed
Movement tendency, described first goes out oil pocket is connected with the first pressure stabilizing cavity；The second described valve body is provided with the second oil-in, lets out
Hydraulic fluid port with connect chamber, the second described valve element located at connection intracavity, the second described valve element have during installation with the second valve body phase
The primary importance of sealing and make the second position that is connected with drain tap of connection chamber, described connection chamber is by intercommunicating pore and the
One pressure stabilizing cavity is connected.
As a modification of the present invention, in the second described valve body, it is provided with push rod and the 3rd elastic component, described push rod
One end is corresponding with the second valve element, and the other end is corresponding with the second oil-in, and the 3rd described elastic component has so that push rod is remote
Movement tendency from the second valve element.
As a further improvement on the present invention, the second described valve body is provided with swivel nut, and described swivel nut is offseted with push rod.
As a further improvement on the present invention, the second described valve element includes the top splenium corresponding with push rod and second
Reset boss portion and guide part that the conus portion of valve body conical surface seal is offseted with the second elastic component.
As a further improvement on the present invention, the outer surface of described first valve element be provided with for the first valve interior wall phase
The sealing inclined-plane of sealing.
As a further improvement on the present invention, described first is gone out oil pocket and is connected with the first pressure stabilizing cavity by damping hole.
As a further improvement on the present invention, described intercommunicating pore angularly disposed on the second valve body.
The invention has the beneficial effects as follows, there is provided a kind of load holding valve, when working properly, the first oil-in oil-feed,
It is partly into the first pressure stabilizing cavity and plays the effect that load keeps voltage stabilizing, another part is fuel-displaced dynamic for loading from the first oil-out
Make；During pressure release, the second oil-in oil-feed, open the second valve element so that the hydraulic oil of the first voltage stabilizing intracavity is through connection chamber, drain tap
Flow out；When not having oil-feed suddenly at the first oil-feed, the first pressure stabilizing cavity and the first elastic component make the first valve element and the first valve body
Mutually seal, thus ensureing the output pressure at the first oil-out end, it is to avoid heavy mechanical equipment in oil starvation because action of gravity fall,
Cause plant equipment and casualties.The present invention also has structure simply, safe, reliable in action, easy to assembly, performance
Advantage excellent, that main equipment operating mode can be adapted to.
Brief description
Accompanying drawing 1 is the structural representation of the embodiment of the present invention.
Accompanying drawing 2 is the structure enlarged diagram of the second valve element 21 in accompanying drawing 1.
Accompanying drawing 3 is the hydraulic schematic diagram of the embodiment of the present invention.
In figure, the 1, first valve body；11st, the first valve element；111st, sealing inclined-plane；112nd, damping hole；12nd, the first elastic component；13、
First oil-in；14th, the first oil-out；15th, containing cavity；151st, the first oil suction chamber；152nd, first goes out oil pocket；153rd, the first voltage stabilizing
Chamber；2nd, the second valve body；21st, the second valve element；211st, top splenium；212nd, conus portion；213rd, reset boss portion；214th, guide part；22、
Second elastic component；23rd, the second oil-in；24th, drain tap；25th, connect chamber；26th, intercommunicating pore；27th, push rod；28th, the 3rd elastic component；
29th, swivel nut.
Specific embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings:
By Fig. 1 with reference to shown in Fig. 2,3, a kind of load holding valve, including the first valve body 1, the first valve element 11, the first elastic component
12nd, the second valve body 2, the second valve element 21 and the second elastic component 22, the first described valve body 1 is provided with the first oil-in 13, first
Oil-out 14 and containing cavity 15, the first described valve element 11 is separated into the first oil suction chamber in containing cavity 15 and by containing cavity 15
151st, first goes out oil pocket 152 and the first pressure stabilizing cavity 153, and the first described valve element 11 has first mutually sealing with the first valve body 1
Position is backed down with by hydraulic oil so that the first oil suction chamber 151 goes out, with first, the second position that oil pocket 152 is connected, and described first
Elastic component 12 has so that the movement tendency that mutually seals with the first valve body 1 of the first valve element 11, and described first goes out oil pocket 152 and
One pressure stabilizing cavity 153 is connected；The second described valve body 2 is provided with the second oil-in 23, drain tap 24 and connects chamber 25, described
In connection chamber 25, the second described valve element 21 has first mutually sealing during installation with the second valve body 2 to second valve element 21
Put with so that connecting the second position that chamber 25 is connected with drain tap 24, it is steady with first that intercommunicating pore 26 is passed through in described connection chamber 25
Pressure chamber 153 is connected.Specifically, described intercommunicating pore 26 angularly disposed on the second valve body 2.Referring to accompanying drawing 3, a is first
Oil-in, b is the first oil-out, and pi is control port for the second oil-in, and t is drain tap.The invention has the beneficial effects as follows, carry
Supply a kind of load holding valve, when working properly, the first oil-in oil-feed, it is partly into the first pressure stabilizing cavity and play load guarantor
The effect of the pressure that keeps steady, another part from the first oil-out fuel-displaced for loading action；During pressure release, the second oil-in oil-feed, open
Second valve element is so that the hydraulic oil of the first voltage stabilizing intracavity flows out through connection chamber, drain tap；Suddenly there is no oil-feed at the first oil-feed
When, the first pressure stabilizing cavity and the first elastic component make the first valve element seal with the first valve body phase, thus ensureing the first oil-out end
Output pressure, it is to avoid heavy mechanical equipment causes plant equipment and casualties in oil starvation because action of gravity is fallen.This
Bright devise a kind of big flow big pilot ratio hydraulic control load holding valve, it is simple that it also has a structure, and reliable in action is easy to assembly,
Function admirable, the advantage that main equipment operating mode can be adapted to.
It is provided with push rod 27 and the 3rd elastic component 28, one end of described push rod 27 and the second valve element in the second described valve body 2
21 is corresponding, and the other end is corresponding with the second oil-in 23, and the 3rd described elastic component 28 has so that push rod 27 is away from second
The movement tendency of valve element 21.Specifically, the second described valve body 2 is provided with swivel nut 29, described swivel nut 29 and push rod 27 phase
Support.In particular, to include the top splenium 211 corresponding with push rod 27 close with the second valve body 2 conical surface for the second described valve element 21
Reset boss portion 213 and guide part 214 that the conus portion 212 of envelope is offseted with the second elastic component 22.Specifically, first,
2nd, the 3rd elastic component is spring.The top pressure push rod setting of swivel nut, rotates swivel nut as needed and can set opening of the second valve element
Open pressure so that the range of fit of product is wider.The setting of swivel nut hollow simultaneously at work can be directly as the second oil-feed
Mouthful, hydraulic oil pushing tow push rod, drive push rod top pressure second valve element so that the first pressure stabilizing cavity passes through to connect chamber connection with drain tap,
So that the oil of the first voltage stabilizing intracavity is revealed and is discharged.The setting of the second valve element conus portion makes the second valve element close with the second valve body
Envelope reliable it is ensured that product No leakage.The setting of guide part makes the motion of the second elastic component relatively reliable.
The outer surface of described first valve element 11 is provided with the sealing inclined-plane for sealing with the first valve body 1 inwall phase.So
Structure make the first valve element and the first valve body adopt conical surface seal, sealed reliable, it is to avoid reveal.
Described first is gone out oil pocket 152 and is connected with the first pressure stabilizing cavity 153 by damping hole 112.The setting of damping hole is entered
One step ensures the Reliability of Microprocessor of product, and described damping hole is less than the first oil outlet.When hydraulic oil a small amount of in work passes through damping
After hole enters the first pressure stabilizing cavity, after the first pressure stabilizing cavity is full of, stay the first voltage stabilizing intracavity.When the not oil-feed suddenly of the first fuel feed hole
(during the emergency situations such as oil-feed tracheal rupture), the first valve element makes in the presence of the first elastic component and the first voltage stabilizing intracavity hydraulic oil
Obtain the first valve element quick closedown, now the hydraulic oil of the first voltage stabilizing intracavity goes out oil pocket by damping hole entrance first, thus ensureing
Output pressure at first oil-out, it is to avoid heavy mechanical equipment in oil starvation because action of gravity fall, cause plant equipment with
And casualties.
Every technical staff's notice: although the present invention describes according to above-mentioned specific embodiment, the present invention
Invention thought be not limited to that invention, the repacking of any utilization inventive concept, all will include this patent protection of the patent right
In the range of.
Claims (7)
1. a kind of load holding valve it is characterised in that: include the first valve body (1), the first valve element (11), the first elastic component (12),
Second valve body (2), the second valve element (21) and the second elastic component (22), described the first valve body (1) is provided with the first oil-in
(13), the first oil-out (14) and containing cavity (15), described the first valve element (11) is in containing cavity (15) and by containing cavity
(15) it is separated into the first oil suction chamber (151), first go out oil pocket (152) and the first pressure stabilizing cavity (153), described the first valve element (11)
There is the primary importance mutually sealing with the first valve body (1) and backed down by hydraulic oil so that the first oil suction chamber (151) is fuel-displaced with first
The second position that chamber (152) is connected, described the first elastic component (12) has so that the first valve element (11) and the first valve body (1)
The movement tendency mutually sealing, described first goes out oil pocket (152) is connected with the first pressure stabilizing cavity (153)；The second described valve body
(2) it is provided with the second oil-in (23), drain tap (24) and connects chamber (25), described the second valve element (21) is located at connection chamber
(25), in, described the second valve element (21) is had the primary importance mutually being sealed with the second valve body (2) during installation and so that connects chamber
(25) second position being connected with drain tap (24), intercommunicating pore (26) and the first pressure stabilizing cavity are passed through in described connection chamber (25)
(153) it is connected.
2. load holding valve according to claim 1 is it is characterised in that be provided with push rod (27) in described the second valve body (2)
With the 3rd elastic component (28), one end of described push rod (27) is corresponding with the second valve element (21), the other end and the second oil-in
(23) corresponding, the 3rd described elastic component (28) has the movement tendency making push rod (27) away from the second valve element (21).
3. load holding valve according to claim 2 is it is characterised in that described the second valve body (2) is provided with swivel nut
(29), described swivel nut (29) and push rod (27) offset.
4. load holding valve according to claim 2 is it is characterised in that described the second valve element (21) includes and push rod
(27) conus portion (212) of corresponding top splenium (211) and the second valve body (2) conical surface seal and the second elastic component (22) phase
The reset boss portion (213) supported and guide part (214).
5. load holding valve according to claim 1 is it is characterised in that the outer surface of described first valve element (11) is provided with
For the sealing inclined-plane (111) sealing with the first valve body (1) inwall phase.
6. load holding valve according to claim 1 is it is characterised in that described first goes out oil pocket (152) and pass through damping hole
(112) it is connected with the first pressure stabilizing cavity (153).
7. load holding valve according to claim 1 it is characterised in that described intercommunicating pore (26) angularly disposed second
On valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510193345.8A CN104763822B (en) | 2015-04-23 | 2015-04-23 | Load maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510193345.8A CN104763822B (en) | 2015-04-23 | 2015-04-23 | Load maintaining valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763822A CN104763822A (en) | 2015-07-08 |
| CN104763822B true CN104763822B (en) | 2017-02-01 |
Family
ID=53645834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510193345.8A Active CN104763822B (en) | 2015-04-23 | 2015-04-23 | Load maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763822B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230617B (en) * | 2019-06-24 | 2020-04-07 | 徐州阿马凯液压技术有限公司 | Novel load holding valve |
| DE102019218400A1 (en) * | 2019-11-27 | 2021-05-27 | Hawe Hydraulik Se | Valve cone, load-holding valve with valve cone and method of assembling a check valve |
| CN112431805B (en) * | 2020-12-04 | 2024-05-17 | 涌镇液压机械（上海）有限公司 | Proportional pressure reducing valve integrating pressure stabilizing function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205385B (en) * | 1987-05-15 | 1991-03-27 | Oil Control Spa | Improvements in a load holding and control valve,in particular for hydraulic circuits with either open or closed centre directional control valve. |
| CN2247735Y (en) * | 1995-01-27 | 1997-02-19 | 长沙交通学院 | Combined integrated block hydraulically balanced valve |
| CN201155498Y (en) * | 2008-01-21 | 2008-11-26 | 浙江圣邦机械有限公司 | Integrated one-way balance valve |
| CN201232784Y (en) * | 2008-07-17 | 2009-05-06 | 贵州枫阳液压有限责任公司 | Load holding valve |
| CN203614845U (en) * | 2013-10-23 | 2014-05-28 | 宁波明启液压机械有限公司 | Pilot type pressure reducing valve |
| CN204553939U (en) * | 2015-04-23 | 2015-08-12 | 圣邦集团有限公司 | Load holding valve |
-
2015
- 2015-04-23 CN CN201510193345.8A patent/CN104763822B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205385B (en) * | 1987-05-15 | 1991-03-27 | Oil Control Spa | Improvements in a load holding and control valve,in particular for hydraulic circuits with either open or closed centre directional control valve. |
| CN2247735Y (en) * | 1995-01-27 | 1997-02-19 | 长沙交通学院 | Combined integrated block hydraulically balanced valve |
| CN201155498Y (en) * | 2008-01-21 | 2008-11-26 | 浙江圣邦机械有限公司 | Integrated one-way balance valve |
| CN201232784Y (en) * | 2008-07-17 | 2009-05-06 | 贵州枫阳液压有限责任公司 | Load holding valve |
| CN203614845U (en) * | 2013-10-23 | 2014-05-28 | 宁波明启液压机械有限公司 | Pilot type pressure reducing valve |
| CN204553939U (en) * | 2015-04-23 | 2015-08-12 | 圣邦集团有限公司 | Load holding valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104763822A (en) | 2015-07-08 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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