CN103758901A - Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle - Google Patents
Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle Download PDFInfo
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- CN103758901A CN103758901A CN201310739783.0A CN201310739783A CN103758901A CN 103758901 A CN103758901 A CN 103758901A CN 201310739783 A CN201310739783 A CN 201310739783A CN 103758901 A CN103758901 A CN 103758901A
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Abstract
The invention discloses an internal respiration structure of the diaphragm type spring braking air chamber of a brake system of a commercial vehicle. The internal respiration structure comprises a piston rod (1) which is provided with a respiration hole; a spring (5), a positioning sleeve (4) and a valve (3) are arranged in the respiration hole in turn from the bottom of the respiration hole to the opening of the respiration hole; the spring (5), the positioning sleeve (4) and the valve (3) are fixed through a fixing screw (2) which is arranged on the hole opening portion of the respiration hole. According to the technical scheme of the internal respiration structure of the diaphragm type spring braking air chamber of the brake system of the commercial vehicle, the product structure is simplified, the production cycle is shortened, the cost is reduced, the product reliability, capacity and durability is improved, and accordingly the product performance and service life can be improved and the brake system of the vehicle can be safe.
Description
Technical field
The invention belongs to the technical field of commercial vehicle pneumatic braking system actuator device.Specifically, the present invention relates to a kind of commercial car membrane type spring braking air chamber for braking system internal respiration structure.
Background technique
As depicted in figs. 1 and 2, in the prior art, for the diaphragm spring brake air chamber internal respiration structure of commercial car braking system, move forward and backward to realize internal respiration with valve 2.
When the bleeder brake of parking chamber, piston rod 1 moves forward, and front and back pressure reduction is little, cannot overcome the strength of spring 3, and valve is motionless, and gas passes through driving suction port to piston rod 1 aperture, then arrives spring chamber by the gap of piston rod 1 and valve 2.
When parking chamber air inlet brake off, piston rod 1 moves backward, and Compress Spring chamber gas is from the aperture process of valve base 4, and the gap that enters piston rod 1 and valve 2 arrives piston aperture, then discharges from driving suction port.
While driving a vehicle chamber air inlet, gas cannot enter by pilot seal circle 7 aperture of piston rod 1, normally works in the chamber that guarantees to drive a vehicle.
When parking chamber is damaged, piston rod 1 cannot move rearwards to position; Driving chamber work air inlet, gas enters valve 2 from piston rod aperture, because of braking pressure pressure and flow larger, valve is moved backward.Sealing valve port assurance driving chamber stable gas pressure is normally worked.
Summary of the invention
The invention provides a kind of commercial car membrane type spring braking air chamber for braking system internal respiration structure, its objective is the reliability that improves product.
To achieve these goals, the technological scheme that the present invention takes is:
Commercial car membrane type spring braking air chamber for braking system internal respiration structure of the present invention, comprise piston rod, described piston rod is provided with spiracle, is provided with successively spring, setting sleeve, valve, and fixes by the set screw of spiracle orifice part in described spiracle from bottom, hole to aperture.
Described piston rod leads and two way sealed by pilot seal circle.
The bottom, hole of described spiracle, is provided with pore, and described pore is through hole.
The side of described spiracle is provided with two apertures.
The present invention adopts technique scheme, simplifies product structure, has shortened the manufacture cycle, reduces costs, and improves reliability, production capacity and the endurance quality of product, thereby improves the performance and used life of product, makes motor vehicle braking system safer.
Accompanying drawing explanation
Below the mark in the each width accompanying drawing of this specification expressed content and figure is briefly described:
Fig. 1 is the structural representation of prior art;
Fig. 2 is the local structural representation amplifying of the A-A in Fig. 1;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the local structural representation amplifying of the B-B in Fig. 3.
Being labeled as in Fig. 2:
1, piston rod, 2, valve, 3, spring, 4, valve base, 5, O-ring seals, 6, hole back-up ring, 7, pilot seal circle.
Being labeled as in Fig. 4:
1, piston rod, 2, set screw, 3, valve, 4, setting sleeve, 5, spring, 6, pilot seal circle.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technological scheme.
Structure of the present invention as expressed in Fig. 3, Fig. 4, for a kind of commercial car membrane type spring braking air chamber for braking system internal respiration structure, comprises piston rod 1.Diaphragm spring brake air chamber is connected on vehicle bridge air chamber mounting bracket by construction bolt, and push rod fork is connected to realize and will brakes break ouput force with adjustment arm.
In order to solve the problem of prior art existence and to overcome its defect, realize the goal of the invention of the reliability that improves product, the technological scheme that the present invention takes is:
As shown in Figure 3, Figure 4, commercial car membrane type spring braking air chamber for braking system internal respiration structure of the present invention, piston rod 1 is wherein provided with spiracle, in described spiracle, from bottom, hole, to aperture, be provided with successively spring 5, setting sleeve 4, valve 3, and fixing by the set screw 2 of spiracle orifice part.
Static position relation of the present invention:
We carry out Transform Type design and update to the structure of existing product the present invention, have improved the reliability of product, reduce costs, and improve performance, thereby improve the performance and used life of product.
Described piston rod 1 leads and two way sealed by pilot seal circle 6.
During air chamber work, piston moves forward and backward, and piston rod 1 moves forward and backward simultaneously, and pilot seal circle 6 provides guiding, and before and after guaranteeing, chamber seals separately.
The bottom, hole of described spiracle, is provided with pore, and described pore is through hole.
The side of described spiracle is provided with two apertures, i.e. hole C in figure and hole D.
Dynamic position relation of the present invention:
In piston valve aperture of door, valve 3, when hole C pressure is greater than hole D pressure, overcomes spring force, is moved down into valve port, makes to seal before hole C, hole, hole and spring.
Working principle of the present invention:
During vehicle parking braking, the venting of parking chamber, piston forward mobile spring chamber air pressure reduces.The pressure difference of setting sleeve 4 valve areas and generation is all very little, cannot move backward; Meanwhile, also hydrodynamic reciprocating sealing valve port backward not of valve 3, gas to piston rod aperture D, then by setting sleeve 4 apertures arrival spring chambers, makes air pressure balance by driving suction port.
During Vehicle Driving Cycle, the air inlet of parking chamber, brake off piston moves backward, and piston rod 1 moves backward simultaneously.Piston compression spring chamber gas is from piston rod 1 aperture process, and valve pocket is discharged from driving suction port by hole D again, guarantees that spring chamber air pressure is normal.
When the service brake in travelling is braked, driving chamber air inlet, gas cannot enter piston rod aperture by pilot seal circle 6.Can normally work in driving chamber.
When parking chamber is damaged, piston rod cannot move rearwards to position; The work air inlet of driving chamber, gas enters from piston rod aperture C, hole D respectively, and the valve pocket connecting because of hole C is very little, and linking springs chamber, D chamber, hole is very large, forms pressure reduction, overcomes the elastic force of spring 5, valve 3 moves down, and seals valve port, guarantees the sealing of driving chamber.
Technical characterstic of the present invention:
1, valve body is simplified, is dwindled reduction cost of material;
2, by valve from deep hole processing and assembling, change to simple, to be convenient to processing and assembling aperture;
3, by an original hole work improvement, be hole D hole work under general case, in particular cases hole C work, reduces rate of fault, improves reliability.
Beneficial effect of the present invention: simplified product structure, shortened the manufacture cycle, improved production capacity and the endurance quality of product, made motor vehicle braking system safer.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or without improving, design of the present invention and technological scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (4)
1. commercial car membrane type spring braking air chamber for braking system internal respiration structure, comprise piston rod (1), it is characterized in that: described piston rod (1) is provided with spiracle, in described spiracle, from bottom, hole, to aperture, be provided with successively spring (5), setting sleeve (4), valve (3), and fixing by the set screw (2) of spiracle orifice part.
2. according to commercial car membrane type spring braking air chamber for braking system internal respiration structure claimed in claim 1, it is characterized in that: described piston rod (1) is by pilot seal circle (6) guiding and two way sealed.
3. according to commercial car membrane type spring braking air chamber for braking system internal respiration structure claimed in claim 1, it is characterized in that: the bottom, hole of described spiracle, be provided with pore, described pore is through hole.
4. according to commercial car membrane type spring braking air chamber for braking system internal respiration structure claimed in claim 1, it is characterized in that: the side of described spiracle is provided with two apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739783.0A CN103758901A (en) | 2013-12-27 | 2013-12-27 | Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739783.0A CN103758901A (en) | 2013-12-27 | 2013-12-27 | Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103758901A true CN103758901A (en) | 2014-04-30 |
Family
ID=50526191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310739783.0A Pending CN103758901A (en) | 2013-12-27 | 2013-12-27 | Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103758901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107719351A (en) * | 2017-11-13 | 2018-02-23 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
| CN110173524A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | A kind of new brake pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115648A (en) * | 2005-02-09 | 2008-01-30 | 威伯科有限公司 | Ventilation device for a combined spring accumulator and operating brake cylinder |
| CN101312866A (en) * | 2005-10-06 | 2008-11-26 | 克诺尔商用车制动系统有限公司 | Combined service brake and spring-loaded brake cylinder with an inner ventilation |
| US20100007201A1 (en) * | 2005-07-27 | 2010-01-14 | Antony Schodrowski | Combined Service Brake And Spring Type Brake Cylinder Having Internal Ventilation |
| CN203082092U (en) * | 2013-02-26 | 2013-07-24 | 王绿阳 | Internal breath type spring brake air chamber |
| CN203702939U (en) * | 2013-12-27 | 2014-07-09 | 芜湖盛力科技股份有限公司 | Breathing structure inside diaphragm type spring braking air chamber of commercial vehicle |
-
2013
- 2013-12-27 CN CN201310739783.0A patent/CN103758901A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115648A (en) * | 2005-02-09 | 2008-01-30 | 威伯科有限公司 | Ventilation device for a combined spring accumulator and operating brake cylinder |
| US20100007201A1 (en) * | 2005-07-27 | 2010-01-14 | Antony Schodrowski | Combined Service Brake And Spring Type Brake Cylinder Having Internal Ventilation |
| CN101312866A (en) * | 2005-10-06 | 2008-11-26 | 克诺尔商用车制动系统有限公司 | Combined service brake and spring-loaded brake cylinder with an inner ventilation |
| CN203082092U (en) * | 2013-02-26 | 2013-07-24 | 王绿阳 | Internal breath type spring brake air chamber |
| CN203702939U (en) * | 2013-12-27 | 2014-07-09 | 芜湖盛力科技股份有限公司 | Breathing structure inside diaphragm type spring braking air chamber of commercial vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107719351A (en) * | 2017-11-13 | 2018-02-23 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
| CN110173524A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | A kind of new brake pump |
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Application publication date: 20140430 |
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| RJ01 | Rejection of invention patent application after publication |