CN202091411U - Energy-storage piston type spring braking suction and exhaust structure device in air chamber - Google Patents
Energy-storage piston type spring braking suction and exhaust structure device in air chamber Download PDFInfo
- Publication number
- CN202091411U CN202091411U CN2010206930270U CN201020693027U CN202091411U CN 202091411 U CN202091411 U CN 202091411U CN 2010206930270 U CN2010206930270 U CN 2010206930270U CN 201020693027 U CN201020693027 U CN 201020693027U CN 202091411 U CN202091411 U CN 202091411U
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- cavity
- parking
- piston
- chamber
- piston rod
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Abstract
The utility model relates to an energy-storage piston type spring braking suction and exhaust structure device in an air chamber, which comprises a parking cavity and a traveling cavity. A piston is arranged in the parking cavity, a braking spring is arranged between the piston and the rear of the parking cavity. The energy-storage piston type spring braking suction and exhaust structure device in the air chamber is characterized by being provided with a hollow piston rod, the rear end of the piston rod is fixedly connected with the piston, the front end of the piston rod contacts with a rubber brake diaphragm, a valve is arranged at the inner front end of a cavity of the piston rod, the piston rod is provided with a through hole, and a bidirectional rubber cup is mounted on the cavity wall at the front end of the parking cavity. The device in the air chamber has the advantages that after a guide pipe for connecting the traveling cavity with the parking cavity is cancelled, a sealing cavity only connected with an air inlet of the traveling cavity is formed by a parking rear cavity, and air suction or exhaust of the parking rear cavity can be realized only by a relay valve connected with the traveling cavity. The device is capable of effectively avoiding direct communication of the parking rear cavity with the atmosphere and the shortcomings that impurities such as dust and the like are easy to be brought in the parking rear cavity and water enters the parking rear cavity due to fording of a vehicle, and the like, and the device has an important role in ensuring reliability of products and prolonging the service lives of the products.
Description
Technical field
The utility model relates to the heavy-duty car safety catch, and it is an automobile under situation is paddled in rugged environment and requirement, can effectively guarantee automobile brake validity and reliability device.
Background technique
Automobile needs Parking Brake work, Parking Brake when stopping be to rely on the elastic force of the spring in the Parking chamber to be delivered to brake system.And behind vehicle launch, brake relies on Service Brake that brake power is provided, can enter pressed gas in the Parking chamber, causing piston to overcome spring pressure moves, the Parking cavity volume is reduced, allow Parking Brake will break away from working state,, the gas in the Parking chamber must be discharged a part in order to realize This move smoothly; When needs stop once more, again with gas backstreaming to the Parking chamber.At present, the method for employing is that intracavity gas is discharged to the driving chamber.
The driving chamber of present stage is generally adopted conduit to be connected with the Parking chamber and is realized exchange gas.Conduit connect to exist and easily to come off, and easily impurity bands such as dust is gone into the Parking chamber when air-breathing, influences life of product and vehicle defective such as can not paddle.
Summary of the invention
The purpose of this utility model provides the energy storage piston type spring braking air chamber internal respiration constructional device of a kind of Security that can strengthen vehicle and reliability to remedy the deficiency of existing product technology.This device can satisfy extraordinary vehicle and require car load to have the specific function of paddling requirement.The utility model for realizing the technological scheme that purpose adopts is: energy storage piston type spring braking air chamber internal respiration constructional device, comprise Parking chamber and driving chamber, Parking has piston in the chamber, between piston and the rear portion, Parking chamber brake spring is arranged, it is characterized in that: the piston rod that is provided with hollow, the piston rod rear end piston that is connected, preceding end in contact braking epithelium, the plunger Inner Front End is provided with valve; Through hole is arranged on the piston rod; On the front end cavity wall of Parking chamber, two-way leather cup is installed.
The beneficial effects of the utility model: after cancellation connects the conduit of driving a vehicle between chamber and the Parking chamber, the Parking back cavity forms a Seal cage that only is connected with driving chamber suction port, the Parking back cavity needs air-breathing or exhaust, then can only realize by the relay valve that is connected with the driving chamber.This structure can effectively avoid the Parking back cavity directly and atmosphere communicate, easily impurity bands such as dust are gone into defectives such as causing the water inlet of Parking back cavity after Parking back cavity and car load are paddled, have important function working life to guaranteeing product reliability and prolongation product.
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Description of drawings
Structural representation when Fig. 1 is Parking.
Structural representation when Fig. 2 is driving.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the sectional view of two-way leather cup.
Schematic perspective view when Fig. 5 is driving.
Fig. 6 is the partial enlarged drawing of Fig. 5.
Embodiment
Embodiment: energy storage piston type spring braking air chamber mainly comprises Parking chamber and driving chamber, and it is respectively a kind of device that parking of automobile braking and service brake provide power.Brake spring 1, piston 2, piston cup 3, piston rod 4, two-way leather cup 5 are arranged in the Parking chamber, and the driving chamber comprises component such as valve 6, braking epithelium 7, return awl spring 8.Wherein brake spring 1 is for providing mechanical braking power behind the vehicle parking.Two chambeies before and after piston 2 is divided into the Parking chamber, the ante-chamber pressurization with brake spring 1 compression, is removed stopping brake power, realizes vehicle start.Positioning piston 2 and dust reduction capability when back cavity mainly is the ante-chamber pressurization.Piston cup 3 guarantees to act on the wiper seal on the piston 2 in the driving process.Piston rod 4 transmits the active force of brake spring 1 when Parking.To drive a vehicle chamber and Parking chamber of two-way leather cup 5 is independently of one another when pressurizeing respectively.Braking epithelium 7 provides retardation pressure when service brake.Valve 6 is guaranteed the exchange of cavity pressure after the Parking.Return awl spring 8 provides the distortion returning place force of epithelium 7 after service brake.
When vehicle was in the Parking state, the elastic force of brake spring 1 was delivered to brake system by piston 2, piston rod 4, braking epithelium 7 and push rod 10, made vehicle realize mechanical braking.
During the vehicle driving starting, pressurized air by relay valve arrives Parking ante-chamber b by Parking chamber suction port 11, gas pressure is on piston 2, piston 2 is moved backward, cavity space dwindles after the Parking, the back cavity air arrives driving chamber c by piston rod 4, valve 6 and through hole 12, and discharges (driving chamber suction port 13 and atmosphere communicate) from driving chamber suction port 13.At this moment, parking braking is in off working state, by service brake work.
When vehicle parking, because Parking ante-chamber b venting, piston 2 moves forward under brake spring 1 effect, Parking back cavity volume increases, air arrives Parking back cavity a(and is unlikely to make the Parking back cavity to form negative pressure by through hole 12, valve 6 and piston rod 4), all parts are returned to original state.
The effect of valve 6 is set: (Parking ante-chamber b is put pressure when in emergency braking, driving chamber c pressurization), because driving chamber c pressurization rapidly, valve 6 can be closed, therefore parking braking spring 1 and service brake epithelium 6 act on push rod 10 simultaneously to realize dual brake, satisfy the demand of braking force in emergency circumstances.
The effect of two-way leather cup 5 is set: according to designing requirement, when moving on to stop behind the piston rod 4, through hole 12 is positioned at two-way leather cup 5 just, is in state of equilibrium this moment, it is airtight that Parking ante-chamber b, Parking back cavity a and driving chamber c three rely on two-way leather cup 5 to realize, keeping state of equilibrium.
Claims (1)
1. energy storage piston type spring braking air chamber internal respiration constructional device, comprise Parking chamber and driving chamber, Parking has piston in the chamber, between piston and the rear portion, Parking chamber brake spring is arranged, it is characterized in that: the piston rod that is provided with hollow, the piston rod rear end piston that is connected, preceding end in contact braking epithelium, the plunger Inner Front End is provided with valve; Through hole is arranged on the piston rod; On the front end cavity wall of Parking chamber, two-way leather cup is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206930270U CN202091411U (en) | 2011-07-11 | 2011-07-11 | Energy-storage piston type spring braking suction and exhaust structure device in air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206930270U CN202091411U (en) | 2011-07-11 | 2011-07-11 | Energy-storage piston type spring braking suction and exhaust structure device in air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091411U true CN202091411U (en) | 2011-12-28 |
Family
ID=45366480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206930270U Expired - Lifetime CN202091411U (en) | 2011-07-11 | 2011-07-11 | Energy-storage piston type spring braking suction and exhaust structure device in air chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091411U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012164587A2 (en) * | 2011-05-26 | 2012-12-06 | Wabco India Limited | Internal breather valve for spring brake actuators |
| CN102840256A (en) * | 2012-07-27 | 2012-12-26 | 浙江万安科技股份有限公司 | Spring braking cylinder internal respiration structure |
| CN109305156A (en) * | 2018-09-30 | 2019-02-05 | 浙江万安科技股份有限公司 | EPB valve assembly and EPB electronic brake system with internal respiration structure |
| CN111853111A (en) * | 2020-07-17 | 2020-10-30 | 中车青岛四方车辆研究所有限公司 | Brake cylinder |
| CN114439869A (en) * | 2022-04-07 | 2022-05-06 | 江苏恒鑫正宏科技有限公司 | Spring brake chamber with clearance change self-adjusting sealing function |
| EP4223601A1 (en) * | 2022-02-04 | 2023-08-09 | ZF Commercial Vehicle Control Systems India Limited | Spring brake actuator comprising a ram assembly with a check valve |
-
2011
- 2011-07-11 CN CN2010206930270U patent/CN202091411U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012164587A2 (en) * | 2011-05-26 | 2012-12-06 | Wabco India Limited | Internal breather valve for spring brake actuators |
| WO2012164587A3 (en) * | 2011-05-26 | 2013-06-27 | Wabco India Limited | Internal breather valve for spring brake actuators |
| CN102840256A (en) * | 2012-07-27 | 2012-12-26 | 浙江万安科技股份有限公司 | Spring braking cylinder internal respiration structure |
| CN109305156A (en) * | 2018-09-30 | 2019-02-05 | 浙江万安科技股份有限公司 | EPB valve assembly and EPB electronic brake system with internal respiration structure |
| CN111853111A (en) * | 2020-07-17 | 2020-10-30 | 中车青岛四方车辆研究所有限公司 | Brake cylinder |
| CN111853111B (en) * | 2020-07-17 | 2021-09-03 | 中车青岛四方车辆研究所有限公司 | Brake cylinder |
| EP4223601A1 (en) * | 2022-02-04 | 2023-08-09 | ZF Commercial Vehicle Control Systems India Limited | Spring brake actuator comprising a ram assembly with a check valve |
| CN114439869A (en) * | 2022-04-07 | 2022-05-06 | 江苏恒鑫正宏科技有限公司 | Spring brake chamber with clearance change self-adjusting sealing function |
| CN114439869B (en) * | 2022-04-07 | 2022-07-01 | 江苏恒鑫正宏科技有限公司 | Spring brake chamber with clearance change self-adjusting sealing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |