CN1039215C - Controlling system and method for braking apparatus of vehical - Google Patents
Controlling system and method for braking apparatus of vehical Download PDFInfo
- Publication number
- CN1039215C CN1039215C CN94106566A CN94106566A CN1039215C CN 1039215 C CN1039215 C CN 1039215C CN 94106566 A CN94106566 A CN 94106566A CN 94106566 A CN94106566 A CN 94106566A CN 1039215 C CN1039215 C CN 1039215C
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- valve
- air
- chamber
- reducing valve
- brake
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- Braking Systems And Boosters (AREA)
Abstract
The present invention relates to a control system and a control method for a vehicle brake device for a combined air chamber. The control system comprises a first pressure reducing valve, a second pressure reducing valve, a shuttle valve and a second quick release valve. When the brake is carried out, a front cavity of the air chamber releases air to be below a set value of the second pressure reducing valve, the second pressure reducing valve outputs air pressure, remained air pressure is lead into the front cavity of the air chamber, and the remained air pressure is approximately from 0.20 to 0.40MPa and is approximately balanced to spring force.
Description
The present invention relates to a kind of control system of automobile pressure emergency brake device, be particularly useful for the inventor's disclosed brake device for car in utility model application No.88216447.3.
A kind of new automobile air pressure emergency brake device is disclosed among the utility model application No.88216447.3, wherein compressed air brake cylinder has adopted the mating type air chamber, the mating type compressed air brake cylinder as shown in Figure 1: form by front fork (27), adjustment nut (26), push rod (13), protective cover (14), seal ring (15), orienting sleeve (16), air chamber fore shell (17), ante-chamber admission port (18), ante-chamber (19), brake piston (20), spring (21), (28), air chamber back cover (22), back cavity admission port (23), back cavity (24), clip parts such as (25).Air chamber fore shell (17), back cover (22) and brake piston (20) are compressed by clip (25), are separated into two air chambers.Coil spring (21,28) be contained in the air chamber back cover (22), described spring (21,28) end withstands the bottom of air chamber back cover (22), the other end acts on the brake piston by a pad (29), back cavity admission port (23) is arranged on the air chamber back cover (22), ante-chamber admission port (18) is arranged on the air chamber fore shell (19).
According to this utility model, when vehicle was normally driven a vehicle, pressurized air entered the ante-chamber (19) of compressed air brake cylinder (6), made spring (21,28) be in compressive state; When car brakeing, the pressurized air of air chamber ante-chamber (19) is bled off.Feed high pressure air at air chamber back cavity (24) simultaneously.So the spring force of atmospheric pressure and spring (21,28) stacks up and acts on the brake piston., promotion push rod (13), drive brake control lever make car brakeing thereby rotating.
Because spring (21,28) has participated in braking, because spring performance produces vibration at glancing impact, the vibration of spring will act on the brake piston, and the thrust of compressed air brake cylinder (6) is changed thereupon.This has just produced the effect that prevents wheel " locking " in abrupt deceleration vehicle.Tire and ground-surface skidding have been avoided.And make car brakeing apart from shortening about 10%.Sideslip and whipping phenomenon when also having avoided car brakeing simultaneously.
But, in this utility model, because when car brakeing, be that pressurized air with ante-chamber bleeds off fully, retarding spring and compressed-air actuated force action and produce an excessive braking force on brake piston, and when rear-wheel braking force is excessive when surpassing the adhesion to road surface limit, to occur the situation of wheel lockup easily, if at this moment automobile is subjected to some side forces slightly, trailing wheel promptly breaks away and the whipping phenomenon takes place.And front and back wheel braking force ratio out-of-adjustment problem appears easily, influence braking effect.In addition, brake piston is insensitive during brake off.
The control system that the purpose of this invention is to provide a kind of new brake device for car, be particularly suited for disclosed brake device for car among the utility model application No.8821644.7, it has overcome the problem that this device exists, improved the anti-lock function of automobile brake, make front and back wheel braking force ratio suitable, improved braking effect.
The invention provides a kind of control system of new brake device for car, this control setup adopts the mating type air chamber, comprise brake piston and spring, the force action of glancing impact atmospheric pressure and spring force is on brake piston, this control system comprises: source of the gas, air tank, the foot brake valve, first rapid release valve, Pneumatic reversal valve and hand valve, it is characterized in that: this control system also comprises first reducing valve, second reducing valve, the shuttle valve and second rapid release valve, first reducing valve is located between hand valve and the Pneumatic reversal valve, second reducing valve is located between first reducing valve and the shuttle valve, shuttle valve respectively with second reducing valve, the Pneumatic reversal valve and second rapid release valve communicate, second rapid release valve communicates with shuttle valve and 2 air chambers ante-chamber respectively, so that glancing impact air chamber ante-chamber venting is when being lower than the second reducing valve setting, the second reducing valve output pressure, and feed a predetermined excess pressure to the air chamber ante-chamber.
Adopt braking control system of the present invention, can improve wheel anti-lock function, prevent the out of proportion of front and back wheel braking force, improve braking effect.And make the brake piston return rapid.
The present invention will be described with reference to the accompanying drawings.
Fig. 1 is a brake device for car mating type air chamber cutaway view;
Fig. 2 is the scheme drawing of brake equipment control system of the present invention;
Fig. 3 is the air chamber ante-chamber gas pressure curve figure of brake equipment control system of the present invention.
The control system of brake device for car of the present invention has been shown among Fig. 2.Comprise: source of the gas (1), air tank (2), foot brake valve (3) that links to each other with air tank (2) and hand valve (12), foot brake valve (3) communicates with compressed air brake cylinder (5) and (6) through first rapid release valve (4), is used for glancing impact and feeds pressurized air to compressed air brake cylinder (5) and (6) back cavity; Hand valve (12) communicates with Pneumatic reversal valve (9) and second reducing valve (10) respectively through first reducing valve (11), a shuttle valve (8) communicates with second reducing valve (10), Pneumatic reversal valve (9) and second rapid release valve (7) respectively, and take offence chamber (5) and (6) of second rapid release valve (7) and two-system communicate.
The working process of control system of the present invention is described below.State when Figure 2 shows that stopping brake.During driving, pressure in the air tank (2) is greater than 0.40mpa, open hand valve (12), pressurized air enters the ante-chamber of mating type compressed air brake cylinder (5) and (6) through first reducing valve (11), Pneumatic reversal valve (9), shuttle valve (8), second rapid release valve (7), the compression spring brake off, vehicle can normally be driven a vehicle.
During service brake, depress foot brake valve (3), pressurized air enters compressed air brake cylinder (5) through first rapid release valve (4), (6) back cavity, meanwhile, control gaseous is handled Pneumatic reversal valve (9) commutation, make compressed air brake cylinder (5), (6) gas of ante-chamber is by second rapid release valve (7) exhaust to atmosphere, when ante-chamber air pressure is lower than the air pressure of second reducing valve (10) setting, shuttle valve (8) action, second reducing valve (10) output pressurized air enters compressed air brake cylinder (5) through shuttle valve (8) and second rapid release valve (7), (6) ante-chamber, this stump air pressure roughly with the spring force balance.In general, the stump air pressure range remains on roughly between the 0.20-0.40mpa.
Fig. 3 shows compressed air brake cylinder ante-chamber pressure history scheme drawing in the brake process.Wherein, P
IBe the settling pressure of first reducing valve (11), P
IIIt is the settling pressure of second reducing valve (10).
Owing to adopted control system of the present invention, it is excessive and with the problem of wheel lockup, reached the purpose of balance front and back wheel braking force can not produce wheel braking force, simultaneously, because glancing impact air chamber ante-chamber keeps a residue air pressure, and brake piston is active in one's movements, can very fast return during brake off.
Claims (1)
1. the control system of a brake device for car, this brake equipment adopts the mating type air chamber, comprise brake piston and spring, the force action of glancing impact atmospheric pressure and spring force is on brake piston, this control system comprises: source of the gas (1), air tank (2), foot brake valve (3), first rapid release valve (4), Pneumatic reversal valve (9) and hand valve (12), it is characterized in that, this control system also comprises first reducing valve (11), second reducing valve (10), shuttle valve (8) and second rapid release valve (7), first reducing valve (11) is located between hand valve (12) and the Pneumatic reversal valve (9), second reducing valve (10) is located between first reducing valve (11) and the shuttle valve (8), shuttle valve (8) respectively with second reducing valve (10), Pneumatic reversal valve (9) and second rapid release valve (7) communicate, second rapid release valve (7) communicates with shuttle valve (8) and 2 air chambers (5) and (6) ante-chamber respectively, so that glancing impact air chamber ante-chamber venting is when being lower than second reducing valve (10) setting, second reducing valve (10) is opened, and feeds a predetermined excess pressure to the air chamber ante-chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94106566A CN1039215C (en) | 1994-06-10 | 1994-06-10 | Controlling system and method for braking apparatus of vehical |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94106566A CN1039215C (en) | 1994-06-10 | 1994-06-10 | Controlling system and method for braking apparatus of vehical |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1100374A CN1100374A (en) | 1995-03-22 |
| CN1039215C true CN1039215C (en) | 1998-07-22 |
Family
ID=5032599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94106566A Expired - Fee Related CN1039215C (en) | 1994-06-10 | 1994-06-10 | Controlling system and method for braking apparatus of vehical |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039215C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741328B (en) * | 2018-01-11 | 2020-08-07 | 上海全路通铁道装备有限公司 | Automatic determination method for train brake test curve |
| CN109249914B (en) * | 2018-09-29 | 2021-10-08 | 厦工(三明)重型机器有限公司 | Emergency braking auxiliary device and emergency braking method |
| CN111361493B (en) * | 2020-03-27 | 2024-01-23 | 荆门宏图特种飞行器制造有限公司 | Emergency cut-off pneumatic control system for tank truck |
| CN111845685A (en) * | 2020-07-17 | 2020-10-30 | 中车青岛四方车辆研究所有限公司 | Brake control unit with one-way breathing function |
| CN112706733B (en) * | 2021-01-11 | 2022-05-10 | 一汽解放汽车有限公司 | Two-stage slope-parking system and vehicle |
| CN114802148B (en) * | 2022-03-23 | 2023-08-25 | 特速安(浙江)机电科技有限公司 | Hydraulic auxiliary braking control system of explosion-proof trackless rubber-tyred vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121873A (en) * | 1976-11-03 | 1978-10-24 | Midland-Ross Corporation | Vehicle air brake system with emergency features |
| CN2044952U (en) * | 1988-12-27 | 1989-09-27 | 青岛建筑工程学院 | Pneumatic emergency brake for automobile |
| WO1992012879A1 (en) * | 1991-01-29 | 1992-08-06 | Allied-Signal Inc. | Electro-pneumatic spring and service brake actuator |
-
1994
- 1994-06-10 CN CN94106566A patent/CN1039215C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121873A (en) * | 1976-11-03 | 1978-10-24 | Midland-Ross Corporation | Vehicle air brake system with emergency features |
| CN2044952U (en) * | 1988-12-27 | 1989-09-27 | 青岛建筑工程学院 | Pneumatic emergency brake for automobile |
| WO1992012879A1 (en) * | 1991-01-29 | 1992-08-06 | Allied-Signal Inc. | Electro-pneumatic spring and service brake actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1100374A (en) | 1995-03-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |