CN202228568U

CN202228568U - Inner respiration type spring brake air chamber structure for passenger car

Info

Publication number: CN202228568U
Application number: CN2011203519197U
Authority: CN
Inventors: 徐耀宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-20
Filing date: 2011-09-20
Publication date: 2012-05-23
Anticipated expiration: 2021-09-20

Abstract

The utility model relates to an inner respiration type spring brake air chamber structure for a passenger car, which comprises a running car air chamber working cavity, a spring cavity and a piston shaft. The piston shaft is provided with an inner respiration hole and the spring cavity is communicated with the running car air chamber working cavity by the inner respiration hole. A dual-layer sealing layer is arranged on a middle housing between the running car air chamber working cavity and the spring cavity. The inner respiration type spring brake air chamber structure for a passenger car disclosed by the utility model has the advantages that: in terms of the structure, a gas-guide tube between an original spring cavity and a non-working cavity of the car running air chamber is removed and the respiration holes of the spring cavity cylinder are blocked, so that dirty water, mud and sand cannot come the air chamber from the respiration holes. Therefore, the service lives of the brake spring and the related sealing elements are guaranteed. An inner respiration hole is added on a piston shaft, so that the inhaled air and the exhausted air from the spring cavity in working can be connected with the running car air chamber by the inner respiration holes. By the arrangement of a dual-layer sealing ring, the inner respiration holes can be sealed. Meanwhile, the sealing performance among several cavities is guaranteed. Therefore, the brake safety of vehicles is improved.

Description

A kind of passenger vehicle is with internal respiration formula spring braking air chamber structure

Technical field

The utility model relates to the coach spring braking technology, relates in particular to a kind of passenger vehicle with internal respiration formula spring braking air chamber structure.

Background technique

Conventional construction coach spring brake chamber; After a lot of passenger vehicle car load assemblings; More serious ponding of spring chamber and dirt phenomenon appear in meeting, finally cause the track bar head of spring air chamber and the Accident due to quality that Sealing (O shape circle) is badly damaged, the driving active chamber seriously leaks gas and brake was lost efficacy between driving air chamber active chamber.Concrete analysis is as follows: the inlet and outlet hole of aperture during as service brake below the inoperative chamber of driving air chamber; The spring chamber of spring air chamber is connected with the inoperative chamber through air pipe simultaneously; Utilize the inlet and outlet hole " breathing " in inoperative chamber; The spring air chamber of this conventional construction is when running into working environment when relatively abominable, bigger like the many or extraneous temperature difference of dust, when aqueous vapor usually congeals into ice easily; The ice cube that the dirt of spring chamber spiracle inspiration from the inoperative chamber or condensation of moisture become; With the friction back and forth through repeatedly of the relative movement part of air chamber, promptly easily the spring chamber and the seal element between inflatable chamber, spring chamber and driving air chamber active chamber of spring braking air chamber destroyed, finally cause the damage of whole air chamber and make the back axle braking failure.Therefore, comprehensive above aspect need reasonably be improved existing technology.

The model utility content

To above defective, the utility model provides a kind of passenger vehicle that can effectively reduce reliability that element corrodes, can improve the back axle braking, improve the car brakeing Security with internal respiration formula spring braking air chamber structure, with many deficiencies of solution existing technology.

For realizing above-mentioned purpose, the utility model adopts following technological scheme:

A kind of passenger vehicle is with internal respiration formula spring braking air chamber structure; Comprise driving air chamber active chamber, spring chamber, piston shaft; Driving air chamber active chamber set inside piston shaft is offered an internal respiration hole and spring chamber and is connected with driving air chamber active chamber through this internal respiration hole on the said piston shaft; On the middle casing between said driving air chamber active chamber and the spring chamber double-layer seal circle is set.

Compared with prior art, the described passenger vehicle of the utility model uses the beneficial effect of internal respiration formula spring braking air chamber structure to be:

(1) structurally, removed the air pipe between former spring chamber and the driving air chamber inoperative chamber, the spiracle of spring chamber cylinder body is shut, and sewage, silt etc. from then on channel get into, and have effectively guaranteed the working life of brake spring and related seals element;

(2) through on piston shaft, setting up an internal respiration hole, suction, the exhaust of spring chamber when work can be linked to each other with driving air chamber active chamber through the internal respiration hole, link then on the relief opening of relay valve;

(3) the double-layer seal circle is set on the middle casing between two inflatable chambers, not only can under driving states, forms the sealing of internal spiracle, guaranteed the sealing between several chambeies simultaneously;

(4) played the dual fail-safe effect through the application of one-way cock, promptly under driving states, when damaging appears in the seal ring on the middle housing; The air pressure of active chamber will act on the one-way cock, and compression one-way cock spring is closed the internal respiration hole path; The Pneumatic pipe cleaner of active chamber is crossed internal respiration hole path entering spring chamber and is destroyed braking when preventing service brake; Thereby improved the vehicle braked Security, simultaneously, the quality of product of car load has also been had been further upgraded.

Description of drawings

According to accompanying drawing the utility model is done further explain below.

Fig. 1 is that the said passenger vehicle of the utility model embodiment is with internal respiration formula spring braking air chamber structure schematic representation;

Fig. 2 is the 1A part structure for amplifying schematic representation of Fig. 1.

Among the figure:

1, driving air chamber active chamber; 2, spring chamber; 3, suction port; 4, relief opening; 5, source of the gas; 6, relay valve; 7, quick release valve; 8, hand brake valve; 9, piston shaft; 10, double-layer seal circle; 11, middle casing; 12, internal respiration hole.

Embodiment

Shown in Fig. 1-2; The described passenger vehicle of the utility model embodiment is with internal respiration formula spring braking air chamber structure; Comprise driving air chamber active chamber 1, spring chamber 2, piston shaft 9; Said driving air chamber active chamber 1 set inside piston shaft 9, said piston shaft 9 outsides are offered an internal respiration hole 12 and suction, the exhaust of spring chamber 2 when work can be connected with driving air chamber active chamber 1 through this internal respiration hole 12, link then on the relief opening of relay valve 6; On installation middle casing 11 and this middle casing 11 between driving air chamber active chamber 1 and the spring chamber 2, double-layer seal circle 10 is set so that not only under driving states, form the sealing of internal spiracle 12, has guaranteed the sealing between several chambeies simultaneously; Said driving air chamber active chamber 1 outside is provided with suction port 3, relief opening 4 respectively, and suction port 3 outsides wherein connect source of the gas 5 through relay valve 6, and relief opening 4 outsides wherein are through quick release valve 7 connection hand brake valves 8.

The described passenger vehicle of above the utility model embodiment is with internal respiration formula spring braking air chamber structure; This internal respiration formula spring braking air chamber can be installed on 7.9 meters rear-engine bus chassis; Can know by its position; After technical pneumostome with spring chamber is brought up to the height of relay valve relief opening, left the rugged environment of spring braking air chamber ante-chamber spiracle far away, thereby improved air-breathing environment greatly.

Above embodiment is more preferably embodiment a kind of of the utility model, and common variation that those skilled in the art carry out in present technique scheme scope and replacement should be included in the protection domain of the utility model.

Claims

1. a passenger vehicle is with internal respiration formula spring braking air chamber structure; Comprise driving air chamber active chamber (1), spring chamber (2), piston shaft (9); Driving air chamber active chamber (1) set inside piston shaft (9) is characterized in that: offer an internal respiration hole (12) and spring chamber (2) on the said piston shaft (9) and be connected with driving air chamber active chamber (1) through this internal respiration hole (12).

2. passenger vehicle according to claim 1 is characterized in that with internal respiration formula spring braking air chamber structure: on the middle casing (11) between said driving air chamber active chamber (1) and the spring chamber (2) double-layer seal circle (10) is set.