CN2671897Y - Improved new rear wheel braking valve - Google Patents
Improved new rear wheel braking valve Download PDFInfo
- Publication number
- CN2671897Y CN2671897Y CN 200420000981 CN200420000981U CN2671897Y CN 2671897 Y CN2671897 Y CN 2671897Y CN 200420000981 CN200420000981 CN 200420000981 CN 200420000981 U CN200420000981 U CN 200420000981U CN 2671897 Y CN2671897 Y CN 2671897Y
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- CN
- China
- Prior art keywords
- valve body
- piston
- middle valve
- valve
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
An improved new rear wheel braking valve comprises an upper valve body, a piston, a spiral spring, a bottom valve body and valve components. A middle valve body is arranged between the upper valve body and the bottom valve body, the piston is arranged in the middle valve body and is sealing sliding connected with the middle valve body, the bottom port of the middle valve body is provided with an inward project edge and is provided with a centre hole. The lower end of the piston is provided with a narrow neck which can sealing sliding pass through the centre hole of the project edge of the middle valve body, the upper end of the piston is provided with venting holes, the spring is arranged between the piston and the middle valve body, and the project edge of the middle valve body is provided with venting holes. The utility model has the advantage that the reactive force of the braking air pressure to the piston is reduced via the isolating of the middle valve body, the braking resistance is created to make the brake rapid and flexible and the work of the piston normal, so the adaptability and the security are increased, and the traffic accident is reduced.
Description
Technical field
The utility model relates to automobile component, particularly a kind of improved novel braking valve of rear wheel and piston and middle valve component.
Background technology
The compressed-air controlled brake valve of car is the piston that promotes brake activation valve by operating air pressure, and the valve of brake activation valve is connected gas circuit to brake system after being promoted by this piston again, thereby reaches the purpose of braking.
There is following problem in existing braking valve of rear wheel: when piston moves when opening valve, the air pressure in the braking gas circuit produces the pressure opposite with braking to piston, so obstruction opening speed and valve-off directly influence braking effect.When the air pressure in the braking gas circuit produces the pressure air pressure serious lack of equilibrium opposite with braking to piston, can cause brake failure, cause serious traffic accident.
Summary of the invention
The purpose of this utility model just provides a kind of counter pressure that reduces, and can regulate air pressure balance, make piston can balance and stability the piston and the middle valve body of novel braking valve of rear wheel of work, and the braking valve of rear wheel assembly that constitutes by this piston and middle valve body.
Scheme of the present utility model is: the structure of piston and middle valve component is: piston is arranged in valve body, sealed sliding is dynamically connected between the two, lower port at middle valve body is provided with the flange that stretches to the axle center, the centre hole of the flange of valve body in the lower end of piston has thin neck sealing to slide to pass, upper end at piston is provided with air extractor vent, and described spring is between piston and middle valve body; On the flange of middle valve body, be provided with air extractor vent.
The braking valve of rear wheel assembly comprises upper valve body, piston, coil spring, following valve body and valve member, between described upper valve body and middle valve body, also be provided with middle valve body, piston is arranged in valve body, sealed sliding is dynamically connected between the two, lower port at middle valve body is provided with the flange that stretches to the axle center, the centre hole of the flange of valve body is provided with air extractor vent in the upper end of piston in the lower end of piston has thin neck sealing to slide to pass, and described spring is between piston and middle valve body; On the flange of middle valve body, be provided with air extractor vent.
The diameter of the air extractor vent in described on the flange of valve body is 0.5～16mm.
The air extractor vent of described piston upper end can be established a plurality of.
The utility model has the advantages that: by the isolation of middle valve body, reduce the counter pressure of braking pressure greatly, obviously reduced consequent brake resistance piston, make the braking fast and flexible, make its pistons work normal, improved comformability and safety, reduce the generation of traffic accident.
Description of drawings
Fig. 1 is a structure cross-sectional schematic of the present utility model;
Fig. 2 is the piston among Fig. 1 and the structural representation of middle valve component.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the utility model comprises upper valve body 1, piston 2, middle valve body 8, valve body 19, valve member are formed down.Middle valve body 8 is positioned at upper valve body 1, and piston 2 is arranged in valve body 8, and both cooperate by RunddichtringO 16 slipper seals.In piston 2 upper ends a plurality of air extractor vents 17 are arranged.And seal ring 9 is arranged between the upper valve body 1.Between piston 2 and the middle valve body 8 pull back spring 15 is arranged, admission port A, D are arranged on the center, upper end or the next door of described upper valve body 1.Be provided with inside flange 81 in the lower port of middle valve body 8, the centre hole of valve body 8 passes through 7 slipper seals of O RunddichtringO between the two in the lower end of piston 2 has a thin neck 21 sealings to slide to pass.The flange 81 of middle valve body 8 has an air extractor vent 3, and its aperture can be set at 0.5～16mm as required.
Described down valve body 19 inside center are equipped with valve member: this valve member comprises that valve chews 4, valve is chewed seat 5, pull back spring 6, snap ring 11, O RunddichtringO 16,14 and 18 and dust guard (20), is fixed in down the inside of valve body 19 with jump ring circle 13.There are a plurality of admission port B the outer of following valve body 19, and a plurality of air extractor duct C are arranged, and upper valve body 1, middle valve body 8, the following a plurality of screws 12 of valve body 19 usefulness fixedly become a complete integral body.
Piston 2 shown in Figure 2 and middle valve body 8 assemblies can be used as the relay valve and the load sensing valve of prior art and reequip and be equipped with.
The relay valve of the utility model and existing automobile (as 145, red rock, take advantage of all size passenger vehicle of models such as dragon, Chunlan), the vehicle of load sensing valve (153 model) is equipped with, and can reach good braking effect.
Working process of the present utility model is as follows:
Glancing impact: braking pressure enters upper valve body air chamber E from A mouth or D mouth, it is descending that this pressure promotes piston 2, the thin neck of piston 2 is by the centre hole of middle valve body 8, push valve 4 open, opening valve port connects braking pressure between mouth B and C, make braking pressure enter brake system, thereby reach the purpose of braking.Prior art does not have middle valve body 8 to isolate, when opening valve port, braking gas charges into the air pressure of braking valve chamber E, and 2 one of generation upward pressure to piston, and this pressure is opposite with operating air pressure, weaken piston 2 downward displacing force and valve-off, directly influenced braking effect.And middle valve body 8 of the present utility model has been isolated the counter pressure of braking pressure and operating air pressure, makes braking effect good.
The utility model is particularly suitable for equipped or is retrofitted in: on the automobile that a vapour, Second Automobile Works and each car manufacturer and various large, medium and small passenger vehicle dispatch from the factory.Make each wheel shaft braking effectively good more, guarantee that each wheel shaft rate of braking and axle load adapt, thereby reach the insensitivity of automobile under various load and deceleration, on mire or ice and snow road, all can realize stable braking.
Claims (4)
1, a kind of improved novel braking valve of rear wheel, comprise upper valve body (1), piston (2), coil spring (15), following valve body (19) and valve member, it is characterized in that: between described upper valve body (1) and following valve body (19), also be provided with middle valve body (8), the top of valve body (8) is positioned at upper valve body (1) in being somebody's turn to do, piston (2) is arranged in valve body (8), sealed sliding is dynamically connected between the two, lower port at middle valve body (8) is provided with the flange (81) that stretches to the axle center, there is a thin neck (21) sealing slip to pass the centre hole of the flange (81) of middle valve body (8) in the lower end of piston (2), be provided with air extractor vent (17) in the upper end of piston (2), described spring (15) is arranged between piston (2) and the valve body (8); On the flange (81) of middle valve body (8), be provided with air extractor vent (3).
2, improved novel braking valve of rear wheel according to claim 1 is characterized in that: the diameter of the air extractor vent (3) in described on the flange (81) of valve body (8) is 0.5～16mm.
3, improved novel braking valve of rear wheel according to claim 1 is characterized in that: the air extractor vent (17) of described piston (2) upper end can be established a plurality of.
4, a kind of piston of novel braking valve of rear wheel and middle valve component, it is characterized in that: comprise piston (2), middle valve body (8) and coil spring (15), piston (2) is arranged in valve body (8), sealed sliding is dynamically connected between the two, lower port at middle valve body (8) is provided with the flange (81) that stretches to the axle center, there is a thin neck (21) sealing slip to pass the centre hole of the flange (81) of middle valve body (8) in the lower end of piston (2), be provided with air extractor vent (17) in the upper end of piston (2), described spring (15) is arranged between piston (2) and the valve body (8); On the flange (81) of middle valve body (8), be provided with air extractor vent (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000981 CN2671897Y (en) | 2004-01-09 | 2004-01-09 | Improved new rear wheel braking valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000981 CN2671897Y (en) | 2004-01-09 | 2004-01-09 | Improved new rear wheel braking valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2671897Y true CN2671897Y (en) | 2005-01-19 |
Family
ID=34482087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420000981 Expired - Fee Related CN2671897Y (en) | 2004-01-09 | 2004-01-09 | Improved new rear wheel braking valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2671897Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489804A (en) * | 2017-09-27 | 2017-12-19 | 宁波国创机车装备有限公司 | A kind of brake hard vent valve and its valve element locking method |
| CN108730573A (en) * | 2017-04-24 | 2018-11-02 | 常州机电职业技术学院 | Clamp air release screw |
| CN113931963A (en) * | 2021-10-19 | 2022-01-14 | 中国北方车辆研究所 | Full-automatic locking suspension device |
-
2004
- 2004-01-09 CN CN 200420000981 patent/CN2671897Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730573A (en) * | 2017-04-24 | 2018-11-02 | 常州机电职业技术学院 | Clamp air release screw |
| CN107489804A (en) * | 2017-09-27 | 2017-12-19 | 宁波国创机车装备有限公司 | A kind of brake hard vent valve and its valve element locking method |
| CN107489804B (en) * | 2017-09-27 | 2019-04-09 | 宁波国创机车装备有限公司 | A kind of emergency braking vent valve and its spool locking method |
| CN113931963A (en) * | 2021-10-19 | 2022-01-14 | 中国北方车辆研究所 | Full-automatic locking suspension device |
| CN113931963B (en) * | 2021-10-19 | 2023-03-03 | 中国北方车辆研究所 | Full-automatic locking suspension device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |