CN102022572B - Pressure limiting valve of vehicle or engineering machine air pressure regulating system - Google Patents
Pressure limiting valve of vehicle or engineering machine air pressure regulating system Download PDFInfo
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- CN102022572B CN102022572B CN2010106003560A CN201010600356A CN102022572B CN 102022572 B CN102022572 B CN 102022572B CN 2010106003560 A CN2010106003560 A CN 2010106003560A CN 201010600356 A CN201010600356 A CN 201010600356A CN 102022572 B CN102022572 B CN 102022572B
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Abstract
The invention discloses a pressure limiting valve of a vehicle or engineering machine air pressure regulating system, and a valve core of an air inlet valve for regulating the area of through flow cross section of an air passage is arranged on the air passage leading from an air inlet to an air outlet; the pressure limiting valve is provided with a pressure regulating device, the pressure regulating device comprises a pressure regulating spring and a pressure regulating screw, the pressure regulating spring is arranged in a pressure regulating cover, and the pressure regulating cover is fastened and connected with a housing of the pressure limiting valve; the pressure regulating screw is mounted on the pressure regulating cover and connected with the pressure regulating spring through a pressure regulating spring seat; and the communication direction between the air passage of the air inlet and the valve core of the air inlet valve can reduce the area of the through flow cross section, and the elastic force direction of the pressure regulating spring can increase the area of the through flow cross section. With the adoption of the technical scheme, the pressure limiting valve is arranged in a whole brake system, thereby being conductive to better protecting safety air pressure in the brake system, improving the safety using performance of a whole vehicle, meeting the condition that the air pressure in a brake pipeline in the brake system of a vehicle or an engineering vehicle can not be too high, and playing a pressure-limiting protection role for the system.
Description
Technical field
The invention belongs to the technical field of automobile and engineering machinery, relate to the technology of automobile or engineering machinery pressure regulation system delivery air device, more particularly, the present invention relates to a kind of automobile or engineering machinery pressure regulation system pressure-limit valve.
Background technique
In the prior art, the Safety performance of automobile or engineering machinery pressure regulation system pressure-limit valve is not high enough, and simultaneously, the structure of its product is compact inadequately with rationally.
Summary of the invention
Problem to be solved by this invention provides a kind of automobile or engineering machinery pressure regulation system pressure-limit valve, its objective is the safe application performance that improves car load.
To achieve these goals, the technological scheme taked of the present invention is:
Automobile provided by the present invention or engineering machinery pressure regulation system pressure-limit valve; Comprise limiting valve body, suction port and air outlet; Described pressure-limit valve is established valve assembly, and the structure of described valve assembly is on suction port leads to the gas circuit of air outlet, to establish the suction valve spool of regulating this gas circuit passage section area size; Described pressure-limit valve is established regulator, and described regulator comprises pressure adjusting spring, pressure regulating screw, and described pressure adjusting spring is located in the pressure regulation cover, and described pressure regulation cover and described limiting valve body are fastenedly connected; Described pressure regulating screw is installed on the described pressure regulation cover, and is connected with described pressure adjusting spring through the pressure adjusting spring seat; The communication direction of the gas circuit of described suction port and suction valve spool reduces described passage section area, and the elastic force direction of described pressure adjusting spring is that described passage section area is increased.
Described valve assembly is connected with valve spring through holder for valve spring; The elastic force direction of described valve spring reduces described passage section area; Described valve spring is installed in down and covers, and described lower cover and described limiting valve body are fastenedly connected.
Described lower cover is through realizing sealing between O-ring seals and the described limiting valve body.
Described lower cover is fastenedly connected through back-up ring and described limiting valve body.
Described suction valve spool is realized sealing through seal ring and described limiting valve body.
Described seal ring is connected with described pressure adjusting spring through piston.
Establish vent on the described pressure regulation cover, adopt dust ring to cover on the outer aperture of described vent, described dust ring is fixed on the described pressure regulation cover through dustproof clip.
The present invention adopts technique scheme; In whole braking system, pressure-limit valve is set; Help the safe air pressure in the better protection braking system, improved the safe application performance of car load, can satisfy in automobile or the engineering vehicle braking system; Braking line air pressure is unlikely to too high, and system is played the voltage-limiting protection effect.
Description of drawings
Make brief description in the face of the expressed content of the accompanying drawing of this specification and the mark among the figure down:
Fig. 1 is a structural representation of the present invention.
Be labeled as among the figure:
1, limiting valve body, 2, back-up ring, 3, O-ring seals, 4, lower cover, 5, valve spring; 6, holder for valve spring, 7, valve assembly, 8, the suction valve spool, 9, seal ring, 10, seal ring; 11, piston, 12, pressure adjusting spring, 13, the pressure adjusting spring seat, 14, the pressure regulation cover, 15, dust ring; 16, dustproof clip, 17, pressure regulating screw, 18, the air outlet, 19, suction port.
Embodiment
Contrast accompanying drawing below; Through description to embodiment; Effect and working principle, the manufacturing process of mutual alignment between the shape of specific embodiments of the invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc.; Do further detailed explanation, inventive concept of the present invention, technological scheme are had more complete, accurate and deep understanding to help those skilled in the art.
The of the present invention structure expressed like Fig. 1 is a kind of automobile or engineering machinery pressure regulation system pressure-limit valve, comprises limiting valve body 1, suction port 19 and air outlet 18.It is after braking system is used pressure-limit valve, the constant air pressure adjustment protective gear of pipeline output rearwards.Pressure-limit valve interconnects through inlet, outlet screw thread and braking line.
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize the goal of the invention of the safe application performance of raising car load, the technological scheme that the present invention takes is:
Automobile provided by the present invention or engineering machinery pressure regulation system pressure-limit valve; Described pressure-limit valve is established valve assembly 7, and the structure of described valve assembly 7 is on suction port 19 leads to the gas circuit of air outlet 18, to establish the suction valve spool 8 of regulating this gas circuit passage section area size; Described pressure-limit valve is established regulator, and described regulator comprises pressure adjusting spring 12, pressure regulating screw 17, and described pressure adjusting spring 12 is located in the pressure regulation cover 14, and described pressure regulation cover 14 is fastenedly connected with described limiting valve body 1; Described pressure regulating screw 17 is installed on the described pressure regulation cover 14, and is connected with described pressure adjusting spring 12 through pressure adjusting spring seat 13; The communication direction of the gas circuit of described suction port 19 and suction valve spool 8 reduces described passage section area, and the elastic force direction of described pressure adjusting spring 12 is that described passage section area is increased.
Adopt technique scheme; In whole braking system, pressure-limit valve is set; Help the safe air pressure in the better protection braking system, improved the safe application performance of car load, can satisfy in automobile or the engineering vehicle braking system; Braking line air pressure is unlikely to too high, and system is played the voltage-limiting protection effect.
Concrete structure of the present invention:
Above-described valve assembly 7 is connected with valve spring 5 through holder for valve spring 6; The elastic force direction of described valve spring 5 reduces described passage section area; Described valve spring 5 is installed on the lower cover 4, and described lower cover 4 is fastenedly connected with described limiting valve body 1.
Described lower cover 4 is through realizing sealing between O-ring seals 3 and the described limiting valve body 1.
Described lower cover 4 is fastenedly connected through back-up ring 4 and described limiting valve body 1.
Described suction valve spool 8 is realized sealing through seal ring 10 and described limiting valve body 1.
Described seal ring 10 is connected with described pressure adjusting spring 12 through piston 11.
Establish vent on the described pressure regulation cover 14, adopt dust ring 15 to cover on the outer aperture of described vent, described dust ring 15 is fixed on the described pressure regulation cover 14 through dustproof clip 16.
Described lower cover 4 is located on described limiting valve body 1 through back-up ring 2.
Described suction valve spool 8 is through seal ring 9 sealings.
Pressure-limit valve is mainly used in brake system pressure pipeline in truck or the engineering machinery; The pressurized air that compressor is come is limited in certain air pressure range; Pass in the braking line of back, make the braking line air pressure of back be unlikely to too high, play the safety protection effect.
Its working principle is:
Pressurized air is got in the limiting valve body 1 by suction port 19, and jack-up pressure adjusting spring 13 is closed inlet valve complement 8, and under the specified operating air pressure of suction port 19 inputs, assurance air outlet 18 output pressures are constant to be 810～850kPa.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; Or design of the present invention and technological scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (1)
1. automobile or engineering machinery pressure regulation system pressure-limit valve; Comprise limiting valve body (1), suction port (19) and air outlet (18); Described pressure-limit valve is established valve assembly (7), and the structure of described valve assembly (7) is on suction port (19) leads to the gas circuit of air outlet (18), to establish the suction valve spool (8) of regulating this gas circuit passage section area size; Described pressure-limit valve is established regulator, and described regulator comprises pressure adjusting spring (12), pressure regulating screw (17), and described pressure adjusting spring (12) is located in the pressure regulation cover (14), and described pressure regulation cover (14) is fastenedly connected with described limiting valve body (1); Described pressure regulating screw (17) is installed on the described pressure regulation cover (14), and is connected with described pressure adjusting spring (12) through pressure adjusting spring seat (13); The communication direction of the gas circuit of described suction port (19) and suction valve spool (8) reduces described passage section area, and the elastic force direction of described pressure adjusting spring (12) is that described passage section area is increased;
It is characterized in that:
Described valve assembly (7) is connected with valve spring (5) through holder for valve spring (6); The elastic force direction of described valve spring (5) reduces described passage section area; Described valve spring (5) is installed on the lower cover (4), and described lower cover (4) is fastenedly connected with described limiting valve body (1);
Described lower cover (4) is through realizing sealing between O-ring seals (3) and the described limiting valve body (1);
Described lower cover (4) is fastenedly connected through back-up ring (2) and described limiting valve body (1);
Described suction valve spool (8) is realized sealing through seal ring (10) and described limiting valve body (1);
Described seal ring (10) is connected with described pressure adjusting spring (12) through piston (11);
Establish vent on the described pressure regulation cover (14), adopt dust ring (15) to cover on the outer aperture of described vent, described dust ring (15) is fixed on the described pressure regulation cover (14) through dustproof clip (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106003560A CN102022572B (en) | 2010-12-22 | 2010-12-22 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106003560A CN102022572B (en) | 2010-12-22 | 2010-12-22 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102022572A CN102022572A (en) | 2011-04-20 |
| CN102022572B true CN102022572B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106003560A Active CN102022572B (en) | 2010-12-22 | 2010-12-22 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
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| Country | Link |
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| CN (1) | CN102022572B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010109B (en) * | 2012-12-11 | 2014-12-03 | 淮安市久泰汽车零部件制造有限公司 | Pedaling locking device |
| CN105402453A (en) * | 2015-12-17 | 2016-03-16 | 芜湖盛力科技股份有限公司 | Pressure limiting valve applied to air pressure braking systems of automobiles and engineering machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1255793A1 (en) * | 1985-01-08 | 1986-09-07 | Предприятие П/Я М-5671 | Pressure valve |
| CN2235535Y (en) * | 1995-07-30 | 1996-09-18 | 邹运心 | Pedal piston sealing type valve |
| DE29603393U1 (en) * | 1996-02-24 | 1997-06-19 | Bosch Gmbh Robert | Hydraulic pressure valve |
| CN2670709Y (en) * | 2003-12-25 | 2005-01-12 | 上海精密科学仪器有限公司 | Regulatable pressure stabilizing valves |
| CN201651466U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air pressure relief valve for railway locomotive air supply systems |
-
2010
- 2010-12-22 CN CN2010106003560A patent/CN102022572B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1255793A1 (en) * | 1985-01-08 | 1986-09-07 | Предприятие П/Я М-5671 | Pressure valve |
| CN2235535Y (en) * | 1995-07-30 | 1996-09-18 | 邹运心 | Pedal piston sealing type valve |
| DE29603393U1 (en) * | 1996-02-24 | 1997-06-19 | Bosch Gmbh Robert | Hydraulic pressure valve |
| CN2670709Y (en) * | 2003-12-25 | 2005-01-12 | 上海精密科学仪器有限公司 | Regulatable pressure stabilizing valves |
| CN201651466U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air pressure relief valve for railway locomotive air supply systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102022572A (en) | 2011-04-20 |
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Owner name: WUHU SHENGLI TECHNOLOGY CO., LTD Free format text: FORMER NAME: SHENGLI BRAKE CO., LTD., WUHU |
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| CP03 | Change of name, title or address | ||
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Address after: 241003 No. 17 West Mountain Road, hi tech Industrial Development Zone, Anhui, Wuhu Patentee after: Wuhu Shengli Technology Shares Co., Ltd. Address before: 241003 No. 8, Jinshan Road, hi tech Industrial Development Zone, Yijiang District, Anhui, Wuhu Patentee before: Shengli Brake Co., Ltd., Wuhu |