CN201461574U - Unidirectional balance valve with brake unlocking ports - Google Patents
Unidirectional balance valve with brake unlocking ports Download PDFInfo
- Publication number
- CN201461574U CN201461574U CN2009200780864U CN200920078086U CN201461574U CN 201461574 U CN201461574 U CN 201461574U CN 2009200780864 U CN2009200780864 U CN 2009200780864U CN 200920078086 U CN200920078086 U CN 200920078086U CN 201461574 U CN201461574 U CN 201461574U
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- valve
- communicated
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- valve body
- oil
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Abstract
A unidirectional balance valve with brake unlocking ports comprises a valve body, wherein the valve body is provided with an oil inlet, a return-oil inlet, a pressure measurement port and a control port, and a main valve core and a valve seat respectively arranged inside the valve body are mutually sealed. One end of a control oil circuit arranged on the valve body is communicated with the return-oil inlet, the other end of the control oil circuit is communicated with a main hole, and the pressure measurement port and the control port are communicated with the control oil circuit. A shuttle valve is mounted inside the control oil circuit, one inlet of the shuttle valve is communicated with the return-oil inlet, another inlet of the shuttle valve is communicated with the control port, and an outlet of the shuttle valve is communicated with the pressure measurement port. The unidirectional balance valve with brake unlocking ports has the advantages that the valve can be directly connected to a brake cylinder, accordingly part of oil flowing through the unidirectional balance valve can flow directly to the brake cylinder so as to unlock the brake cylinder, simultaneously, the flow volume of the other part of the oil is adjusted after flowing through the unidirectional balance valve. The unidirectional balance valve and the brake cylinder have high synchronicity and sensibility, and the starting process of ascending and descending of the load is led to be steadier.
Description
Technical field
The utility model relates to the valve assembly that a kind of hydraulic pressure installation is used, and relates in particular to a kind of unidirectional equilibrium valve, has a braking release port on this unidirectional equilibrium valve.
Background technique
In machinery such as the engineering machinery in modern times, building machinery, widely applied the hydraulic pressure load bearing system, wherein equilibrium valve is the crucial hydraulic element of this type systematic, and the effect of equilibrium valve mainly is to change the circulating resistance of fluid in hydraulic system, reaches the purpose of regulating flow.The quality of its performance directly affects machine performance.
In the existing hydraulic system, for realize that load is risen or start-up course when descending more steady, all be provided with brake cylinder on the oil motor, overcome the spring pressure of brake cylinder by hydrodynamic pressure, make the brake cylinder release, thereby load started steadily.
But existing equilibrium valve with brake cylinder is connected, generally adopt external selector valve or shuttle valve, loosely organized, its sensitivity remains further reinforcement.
The model utility content
Technical problem to be solved in the utility model is that the defective that overcomes prior art provides a kind of unidirectional equilibrium valve of the kind band brake release port that directly is connected with brake cylinder.
To achieve these goals, the technical solution of the utility model is as follows:
The unidirectional equilibrium valve of band brake release port, comprise valve body, have filler opening (C2), return opening (V2), pressure tap (C3) and control mouthful (X) on the valve body, and filler opening (C2), return opening (V2), control mouthful (X) all are communicated with main aperture, be provided with main valve plug and valve seat in the valve body, sealing mutually between main valve plug and the valve seat is characterized in that:
Also be provided with a control oil channel on valve body, an end of control oil channel is communicated with return opening (V2), and the other end is communicated with main aperture, and pressure tap (C3) and control mouthful (X) all with this control oil channel perforation; Be provided with a shuttle valve in the control oil channel, an import of shuttle valve is communicated with return opening (V2), and another import of shuttle valve is communicated with control mouthful (X), and the outlet of shuttle valve is connected with pressure tap (C3).
Further, in the utility model, counterbore is made in the left side of valve seat, and an end of second spring is positioned on the counterbore of valve seat, and the other end is positioned on the step of main aperture.
Further, in the utility model, the right-hand member of described main valve plug is provided with the spring seat and first spring.
Further, in the utility model, described main valve plug is provided with an axial oilhole.
Advantage of the present utility model is:
The utility model can directly be connected with brake cylinder, and the fluid part of the present utility model of flowing through is flowed directly to brake cylinder, makes the brake cylinder release, and simultaneously, another part fluid is by behind the unidirectional equilibrium valve of the present utility model, and flow is adjusted.Both synchronisms are strong, the sensitivity height, and the start-up course that makes load rise, descend is more steady.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a cross-sectional view of the present utility model;
Fig. 2 is the plan structure partial cutaway schematic of Fig. 1;
Fig. 3 is the structural representation of main valve plug of the present utility model;
Fig. 4 is the structural representation of adjustable lever of the present utility model;
Fig. 5 is the schematic diagram of the utility model when work.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1 and 2, the unidirectional equilibrium valve of band brake release port processes the stepped main aperture of valve body 1 by mach method, makes filler opening (C2) in the bottom surface of valve body 1, and filler opening (C2) connects mutually with main aperture.Front and rear surfaces at valve body 1 processes return opening (V2), and return opening (V2) is interconnected with main aperture.
Also process a control oil channel 2 on valve body 1, control oil channel 2 two ends are communicated with main aperture and return opening (V2) respectively.Front and rear surfaces at valve body 1 also processes control mouthful X and pressure tap (C3), and control mouthful X and pressure tap (C3) all connect mutually with this control oil channel.Pressure tap (C3) is used for being connected with brake cylinder.
Right valve pocket 7 is threaded in the right-hand member of valve body 1, and at the right-hand member of right valve pocket 7 plug screw 6 that is threaded, outer-hexagonal 3 is made in the right side of plug screw 6, so that regulate pressure with spanner.Blind nut 4 is threaded on the plug screw 6.One end of first spring 9 is positioned on the plug screw 6, and the other end is positioned at the rear end of spring seat 10, and the front end of spring seat 10 is tapered.
Left end at right valve pocket 7 has a valve seat 15, makes counterbore in the left side of valve seat 15, and an end of second spring 16 is positioned on the counterbore of valve seat 15, and the other end is positioned on the step of main aperture.
Left side valve pocket 11 is threaded in the left end of valve body 1, makes oilhole 18 on the circumference side of left valve pocket 11, and oilhole 18 is communicated with control oil channel 2.
The left side that spool 5 is withstood in the right side of left side valve pocket 11, the right-hand member of spool 5 withstands on the left side of main valve plug 12, and adjustment pad (being sign among the figure) is arranged between spool 5 and left valve pocket 11.
In control oil channel 2, be installed with a shuttle valve by locking nut 22, shuttle valve comprises shuttle valve valve body 24 and ball 26, there is an inner chamber shuttle valve valve body 24 inside, ball 26 is arranged in this inner chamber, have first import 27, second import 23 on the shuttle valve valve body and export 25, the first imports 27, second import 23, outlet 25 all communicates with inner chamber, and first import 27 is communicated with return opening (V2), second import 23 is communicated with control mouthful (X), exports 25 and is connected with pressure tap (C3).
During work:
The utility model is connected with a solenoid directional control valve, and pressure tap of the present utility model (C3) is connected with the brake cylinder of hydraulic pressure load bearing system, and filler opening of the present utility model (C2) is connected with the motor hydraulic fluid port of hydraulic pressure load bearing system.When the electromagnet 1DT of solenoid directional control valve get electric, the 2DT dead electricity, (P) of solenoid directional control valve mouthful and (A) mouthful communicate (T) mouthful and (B) mouthful communicates.(P) of solenoid directional control valve mouthful oil-feed, fluid to shuttle valve, promotes ball 26 by return opening (V2), control oil channel 2 left, and the outlet 25 by shuttle valve enters pressure tap (C3) then, makes the brake cylinder release.Enter the fluid of return opening (V2) simultaneously, increase along with pressure, overcome the spring force of second spring 16, promoting valve seat 15 is moved to the left, oil sealing surface 13 between valve seat 15 and the main valve plug 12 is opened, and fluid is from return opening (V2), through filler opening (C2), to the oil motor hydraulic fluid port, oil motor is turned clockwise, and the fluid of another hydraulic fluid port of oil motor passes through solenoid directional control valve (B) mouth to (T) mouthful oil sump tank.
When the electromagnet 1DT of solenoid directional control valve dead electricity, 2DT gets electric, and (P) of solenoid directional control valve mouthful and (B) mouthful communicate (T) mouthful and (A) mouthful communicates.(P) of solenoid directional control valve mouthful oil-feed, fluid control mouth (X) by unidirectional equilibrium valve enters the control oil channel 2 in the valve body 1, again through shuttle valve, pressure tap (C3) to brake cylinder, make brake cylinder maintenance released state.In addition, part fluid enters cavity volume 30 through oilhole 18, the throttling groove 29 of control oil channel 2, left valve pocket, and along with the increase of pressure, fluid overcomes the spring force of first spring 9, promote spool 5 and main valve plug 12 and move right together, make the utility model be in the state of reverse opening.Solenoid directional control valve (B) mouthful fluid is to the oil motor hydraulic fluid port simultaneously, oil motor is rotated counterclockwise, the fluid of another hydraulic fluid port of oil motor directly enters return opening (V2) by filler opening of the present utility model (C2), and (A) mouth that passes through solenoid directional control valve then is to (T) mouthful oil sump tank.
When the electromagnet 1DT of solenoid directional control valve dead electricity, 2DT dead electricity, (P) of solenoid directional control valve mouthful, (A) mouthful, (T) mouthful and (B) mouthful communicate.Solenoid directional control valve is in unloading condition, and the interior fluid of brake cylinder passes through pressure tap (C3), and to control mouthful (X), (B) mouth that passes through solenoid directional control valve then is to (T) mouthful oil sump tank through shuttle valve.Brake cylinder plays braking action to the oil motor that turns clockwise under the effect of spring.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. the unidirectional equilibrium valve of band brake release port, comprise valve body, have filler opening (C2), return opening (V2), pressure tap (C3) and control mouthful (X) on the valve body, and filler opening (C2), return opening (V2), control mouthful (X) all are communicated with main aperture, be provided with main valve plug and valve seat in the valve body, sealing mutually between main valve plug and the valve seat is characterized in that:
Also be provided with a control oil channel on valve body, an end of control oil channel is communicated with return opening (V2), and the other end is communicated with main aperture, and pressure tap (C3) and control mouthful (X) all with this control oil channel perforation; Be provided with a shuttle valve in the control oil channel, an import of shuttle valve is communicated with return opening (V2), and another import of shuttle valve is communicated with control mouthful (X), and the outlet of shuttle valve is connected with pressure tap (C3).
2. the unidirectional equilibrium valve of band brake release port according to claim 1 is characterized in that counterbore is made in the left side of valve seat, and an end of second spring is positioned on the counterbore of valve seat, and the other end is positioned on the step of main aperture.
3. the unidirectional equilibrium valve of band brake release port according to claim 1 is characterized in that, the right-hand member of described main valve plug is provided with the spring seat and first spring.
4. the unidirectional equilibrium valve of band brake release port according to claim 3 is characterized in that, described main valve plug is provided with an axial oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200780864U CN201461574U (en) | 2009-07-10 | 2009-07-10 | Unidirectional balance valve with brake unlocking ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200780864U CN201461574U (en) | 2009-07-10 | 2009-07-10 | Unidirectional balance valve with brake unlocking ports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461574U true CN201461574U (en) | 2010-05-12 |
Family
ID=42388927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200780864U Expired - Lifetime CN201461574U (en) | 2009-07-10 | 2009-07-10 | Unidirectional balance valve with brake unlocking ports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461574U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943187B (en) * | 2009-07-10 | 2013-02-06 | 上海立新液压有限公司 | One-way balancing valve with brake unlocking port |
| CN104500477A (en) * | 2014-12-18 | 2015-04-08 | 宁波市镇海展跃液压件制造有限公司 | Pressure release type hydraulic control one-way logical valve |
| CN105587701A (en) * | 2015-10-23 | 2016-05-18 | 上海立新液压有限公司 | Load maintaining valve |
-
2009
- 2009-07-10 CN CN2009200780864U patent/CN201461574U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943187B (en) * | 2009-07-10 | 2013-02-06 | 上海立新液压有限公司 | One-way balancing valve with brake unlocking port |
| CN104500477A (en) * | 2014-12-18 | 2015-04-08 | 宁波市镇海展跃液压件制造有限公司 | Pressure release type hydraulic control one-way logical valve |
| CN104500477B (en) * | 2014-12-18 | 2016-08-24 | 宁波市镇海展跃液压件制造有限公司 | Pressure-releasing type fluid-control one-way logical valve |
| CN105587701A (en) * | 2015-10-23 | 2016-05-18 | 上海立新液压有限公司 | Load maintaining valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090710 |
|
| RGAV | Abandon patent right to avoid regrant |