CN202389365U - Novel rear axle braking overload protection device - Google Patents
Novel rear axle braking overload protection device Download PDFInfo
- Publication number
- CN202389365U CN202389365U CN 201120508385 CN201120508385U CN202389365U CN 202389365 U CN202389365 U CN 202389365U CN 201120508385 CN201120508385 CN 201120508385 CN 201120508385 U CN201120508385 U CN 201120508385U CN 202389365 U CN202389365 U CN 202389365U
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- Prior art keywords
- valve
- braking
- spring
- air
- protection device
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- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to the field of coach chassis, in particular to a novel rear axle braking overload protection device of a small or medium size coach chassis. When a hand braking valve and a foot braking valve are operated together, air of an air outlet of the hand braking valve is cut off, and air at a spring cavity end of a spring braking air chamber is cut off, so that hand braking can be achieved. One part of high-pressure air at an air outlet valve of a traveling relay valve enters a membrane cavity end of the spring braking air chamber so as to achieve foot braking, and the other part of the high-pressure air enters a quick-releasing valve through a bi-pass check valve and enters the spring cavity end of the spring braking air chamber through the air outlet of the quick-releasing valve. The high-pressure air overcomes forces of an energy-storage spring so as to compact the energy-storage spring and performs inflation compensation on the spring cavity end so that damage to the air chamber caused by overload in simultaneous working of the energy-storage spring and the traveling braking membrane can be avoided. Therefore, the novel rear axle braking overload protection device can avoid terrible traffic accidents, protects life safety of passengers and greatly reduces property losses.
Description
Technical field
The utility model relates to the novel back axle braking overload protection device in passenger-carrying chassis field, particularly a kind of middle-size and small-size passenger-carrying chassis.
Background technology
Become most of people first-selected trend of going on a journey and increase greatly along with taking passenger vehicle, and the enforcement of public traffic in priority policy, the braking ability of passenger vehicle is directly connected to people's personal safety, improves its braking ability and seems particularly important.
Many before middle-size and small-size passenger-carrying chassiss adopt two relay valves or rapid release valve of a relay valve; When chaufeur runs into emergency situation is that easy parking brake service brake uses together; Be easy to make back axle air chamber overload like this and damage, the braking ability of passenger vehicle thereby can't be guaranteed.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, and the safe novel back axle of being convenient to assemble and keep in repair is braked overload protection device.
The technical scheme that its technical matters that solves the utility model adopts is; Novel back axle braking overload protection device; Which comprises at least respectively and inflator bonded assembly hand brake valve and driving relay valve separately; It is characterized in that: one of them air extractor duct of driving relay valve is connected with one of them admission port of bilateral check valve; Another admission port of bilateral check valve is connected with the air gate of hand brake valve, and the air extractor duct of bilateral check valve is connected with the admission port of rapid release valve, and the air extractor duct of rapid release valve is connected to the spring cavity end of brake application by spring air chamber.
Another air extractor duct of described driving relay valve is connected to the diaphragm chamber end of brake application by spring air chamber.
The beneficial effect of the utility model is, when hand brake valve and foot brake valve were operated together, the hand brake valve air extractor duct was died; The spring cavity end of brake application by spring air chamber die realize hand braking; The high pressure gas part of driving relay valve air extractor duct gets into the diaphragm chamber end of brake application by spring air chamber and realizes foot brake, and another part gets into rapid release valve through the bilateral check valve, and gets into the spring cavity end of brake application by spring air chamber from the air extractor duct of rapid release valve; High pressure gas overcome energy stroage spring makes its compression; The spring cavity end has been carried out the inflation compensation, damaged air chamber because of overload when having avoided energy stroage spring and service brake diaphragm to work simultaneously, so the present invention can avoid the generation of pernicious traffic accident; Protection passenger life security greatly reduces property damage.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Fig. 1: back axle braking overload protection device schematic diagram;
Among the figure: 1, driving relay valve; 2, hand brake valve; 3, bilateral check valve; 4, rapid release valve; 5, hand braking inflator; 6, foot brake inflator; 7, brake application by spring air chamber.
The specific embodiment
Shown in the novel back axle of the basis of Fig. 1 braking overload protection device schematic diagram, this device comprises at least and foot brake inflator 6 bonded assemblys are driven a vehicle relay valve 1, and with hand braking inflator 5 bonded assembly hand brake valves 2.
Concrete working process is:
Owing to hand brakingly be the braking of dying, foot brake is the inflation braking, when hand brake valve 2 and the relay valve 1 of driving a vehicle are operated together; Hand brake valve 2 air extractor ducts are died, and the spring cavity end of brake application by spring air chamber 7 is died and realized hand brakingly, and the high pressure gas part of driving relay valve 1 air extractor duct gets into the diaphragm chamber end of brake application by spring air chamber 7 and realizes foot brake; Another part gets into rapid release valve 4 through bilateral check valve 3; And getting into the spring cavity end of brake application by spring air chamber 7 from the air extractor duct of rapid release valve 4, high pressure gas overcome energy stroage spring makes its compression, and the spring cavity end has been carried out the inflation compensation; Damage air chamber because of overload when having avoided energy stroage spring and service brake diaphragm to work simultaneously; So the present invention can avoid the generation of pernicious traffic accident, protection passenger life security greatly reduces property damage.
Claims (2)
1. novel back axle braking overload protection device; Which comprises at least respectively and inflator bonded assembly hand brake valve and driving relay valve separately; It is characterized in that: one of them air extractor duct of driving relay valve is connected with one of them admission port of bilateral check valve; Another admission port of bilateral check valve is connected with the air gate of hand brake valve, and the air extractor duct of bilateral check valve is connected with the admission port of rapid release valve, and the air extractor duct of rapid release valve is connected to the spring cavity end of brake application by spring air chamber.
2. novel back axle braking overload protection device according to claim 1, it is characterized in that: another air extractor duct of described driving relay valve is connected to the diaphragm chamber end of brake application by spring air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120508385 CN202389365U (en) | 2011-12-08 | 2011-12-08 | Novel rear axle braking overload protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120508385 CN202389365U (en) | 2011-12-08 | 2011-12-08 | Novel rear axle braking overload protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202389365U true CN202389365U (en) | 2012-08-22 |
Family
ID=46664310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120508385 Expired - Fee Related CN202389365U (en) | 2011-12-08 | 2011-12-08 | Novel rear axle braking overload protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202389365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946833A (en) * | 2016-06-15 | 2016-09-21 | 奇瑞商用车（安徽）有限公司 | Vehicle service brake and parking brake interlocking device and control method thereof |
-
2011
- 2011-12-08 CN CN 201120508385 patent/CN202389365U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946833A (en) * | 2016-06-15 | 2016-09-21 | 奇瑞商用车（安徽）有限公司 | Vehicle service brake and parking brake interlocking device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20151208 |
|
| EXPY | Termination of patent right or utility model |