CN104405800A - Diaphragm type spring brake chamber of brake system of commercial vehicle - Google Patents
Diaphragm type spring brake chamber of brake system of commercial vehicle Download PDFInfo
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- CN104405800A CN104405800A CN201410799118.5A CN201410799118A CN104405800A CN 104405800 A CN104405800 A CN 104405800A CN 201410799118 A CN201410799118 A CN 201410799118A CN 104405800 A CN104405800 A CN 104405800A
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- energy storage
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Abstract
The invention discloses a diaphragm type spring brake chamber of a brake system of a commercial vehicle. The spring brake chamber comprises an energy storage cylinder and a diaphragm cylinder, wherein the energy storage cylinder is connected with the diaphragm cylinder through a connecting cover; the energy storage cylinder and the connecting cover form an energy storage cavity; the diaphragm cylinder and the connecting cover form a diaphragm cavity; an energy storage piston assembly and an energy storage spring are arranged in the energy storage cavity, and a diaphragm, a return spring and a push rod assembly are arranged in the diaphragm cavity; the energy storage piston assembly comprises a piston body and a piston rod; the piston body and the piston rod are in fastened connection through a thread fit structure. With the adoption of the technical scheme, the structure of the chamber is simplified, and the production cycle is shortened; the reliability of the chamber is improved, and the performance is improved, so that the performance and the capacity of the chamber are improved, the service life of the chamber is prolonged, and the foundation is laid for mass equipment of different types of vehicles.
Description
Technical field
The invention belongs to the technical field of commercial car braking system actuator device.More specifically, the present invention relates to a kind of commercial car membrane type spring braking air chamber for braking system.
Background technique
As shown in Figure 1, in the prior art, spring brake chamber parking braking and brake off are realized by energy storage piston 1 to-and-fro motion in energy storage cylinder body 2.Because energy storage piston 1 is integral Al-alloy product, bar portion roughness can not be guaranteed, and easily causes energy storage piston 1 to damage O-ring seals 3 when to-and-fro motion.
Summary of the invention
The invention provides a kind of commercial car membrane type spring braking air chamber for braking system, its objective is the reliability improving 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 of the present invention, comprises energy storage cylinder body, diaphragm cylinder body, and described energy storage cylinder body, diaphragm cylinder body are connected by connecting cover; Energy storage cylinder body and connecting cover form energy-storing chamber; Diaphragm cylinder body and connecting cover form diaphragm chamber; In described energy-storing chamber, establish energy storage piston assembly, energy storage spring, in described diaphragm chamber, establish diaphragm, return spring and push rod assembly; Described energy storage piston assembly comprises piston only, piston rod; Described piston only, piston rod are fastenedly connected by thread matching structure.
On the fitting surface of described worm structure, rubberised layer is set.
At the end face that described piston rod is connected with piston only, sealing gasket assembly is set.
Described piston rod is made up of steel.
The surface of described piston rod is provided with chromium coating.
Described energy storage cylinder body and connecting cover adopt multiple bolt to be fastenedly connected.
Described energy storage cylinder body and the joint of connecting cover, arrange O-ring seals.
Described connecting cover, diaphragm and diaphragm cylinder body are fastenedly connected by clip.
Under the effect of described return spring, described push rod assembly and diaphragm are close to.
At the end face that described piston rod is connected with piston only, sealing gasket assembly is set.
The present invention adopts technique scheme, simplifies product structure, shortens the manufacture cycle; Improve the reliability of product, improving SNR, thus the performance of raising product, production capacity and working life, equip in enormous quantities for various vehicle and lay the foundation.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is the structural representation of prior art, being labeled as wherein:
1, energy storage piston, 2, energy storage cylinder body, 3, O-ring seals.
Fig. 2 is structural representation of the present invention;
Fig. 3 is the linkage structure schematic diagram of the energy storage piston assembly in Fig. 2.
Being labeled as in Fig. 2 and Fig. 3:
1, energy storage cylinder body, 2, energy storage piston, 3, O-ring seals, 4, piston guide cover, 5, O-ring seals, 6, connecting cover, 7, diaphragm, 8, clip, 9, spring seat, 10, return spring, 11, push rod assembly, 12, diaphragm cylinder body (i.e. brake chamber housing assembly), 13, piston rod, 14, sealing gasket assembly, 15, piston only, 16, thread matching structure.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technological scheme.
Structure of the present invention as shown in Figure 2 and Figure 3, be a kind of commercial car membrane type spring braking air chamber for braking system, comprise energy storage cylinder body 1, diaphragm cylinder body 12, described energy storage cylinder body 1, diaphragm cylinder body 12 are connected by connecting cover 6; Energy storage cylinder body 1 and connecting cover 6 form energy-storing chamber; Diaphragm cylinder body 12 and connecting cover 6 form diaphragm chamber; In described energy-storing chamber, establish energy storage piston assembly 2, energy storage spring, in described diaphragm chamber, establish diaphragm 7, return spring 10 and push rod assembly 11.
Annexation of the present invention: diaphragm spring brake air chamber suction port is connected with relay valve (in system original a kind of valve) air outlet, diaphragm spring brake air chamber is connected on vehicle bridge air chamber mounting bracket by construction bolt, and push rod fork is connected realizes to brake break ouput force with adjustment arm.
In order to improve the reliability of product, the energy storage piston structure of the present invention to existing product carries out Transform Type design and update, improving SNR, thus improves the performance and used life of product.
In order to solve prior art Problems existing and overcome its defect, realize the goal of the invention of reliability improving product, the technological scheme that the present invention takes for,
As shown in Figure 2 and Figure 3, the energy storage piston assembly 2 of commercial car membrane type spring braking air chamber for braking system of the present invention comprises piston only 15, piston rod 13; Described piston only 15, piston rod 13 are fastenedly connected by thread matching structure 16.
Described piston rod 13, through the hole of connecting cover 6, is contacted with diaphragm 7 by the block rubber of its end; The position contacted with piston rod 13 in the hole of described connecting cover 6, arranges O-ring seals 3 and piston guide cover 4.
Energy storage piston of the present invention is three independent component compositions, overcomes overall aluminum component piston rod root and easily forms the defect that sand holes and stress concentrates, substantially increase energy storage piston seal performance and life-span.
On the fitting surface of described worm structure, rubberised layer is set.Piston rod 13 and piston only are that 15 thread belt glue are connected, easy to assembly, save cost process time.
At the end face that described piston rod 13 is connected with piston only 15, sealing gasket assembly 14 is set.
Described piston rod 13 is made up of steel.The surface of described piston rod 13 is provided with chromium coating.Piston rod 13 is steel part, and refines after chrome-faced process, substantially increases piston rod surface roughness.
Described energy storage cylinder body 1 adopts multiple bolt to be fastenedly connected with connecting cover 6.Described energy storage cylinder body 1 and the joint of connecting cover 6, arrange O-ring seals 5.Loaded cylinder 1 is connected by 8 M8 screw threads for fastening with connecting cover 6, connects jointing place and is provided with part O-ring seals 5 sealing and dustproof.
Described connecting cover 6, diaphragm 7 and diaphragm cylinder body 12 are fastenedly connected by clip 8.
Under the effect of described return spring 10, described push rod assembly 11 is close to diaphragm 7.Described return spring 10 is coaxially installed with push rod assembly 11, and one end of described return spring 10, is fixed on the middle in diaphragm cylinder body 12; The other end is fixed on the middle of diaphragm 7 by spring seat 9.
At the end face that described piston rod 13 is connected with piston only 15, sealing gasket assembly 14 is set.
Dynamic position relation (i.e. working principle) of the present invention:
During service brake, from relay valve air outlet, compressed-air actuated air pressure enters into spring brake chamber ante-chamber (service brake cavity) by suction port, pressurized air promotes push rod assembly 11 by diaphragm 7 and moves forward, promote the adjustment arm on brake-toggle shaft, make brake operation, realize service brake.
During parking braking, the pressurized air in energy-storing chamber is discharged by relay valve relief opening, control valve release, under the effect of energy storage spring, promotes push rod assembly 11 and moves forward, promote the adjustment arm on brake-toggle shaft, make brake operation, realize parking braking.
This invention simplifies product structure, shorten the manufacture cycle, improve production capacity and the performance of product, equip in enormous quantities for various vehicle and lay the foundation.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (10)
1. a commercial car membrane type spring braking air chamber for braking system, comprise energy storage cylinder body (1), diaphragm cylinder body (12), described energy storage cylinder body (1), diaphragm cylinder body (12) are connected by connecting cover (6); Energy storage cylinder body (1) and connecting cover (6) form energy-storing chamber; Diaphragm cylinder body (12) and connecting cover (6) form diaphragm chamber; In described energy-storing chamber, establish energy storage piston assembly (2), energy storage spring, in described diaphragm chamber, establish diaphragm (7), return spring (10) and push rod assembly (11);
It is characterized in that:
Described energy storage piston assembly (2) comprises piston only (15), piston rod (13); Described piston only (15), piston rod (13) are fastenedly connected by thread matching structure (16).
2. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: on the fitting surface of described worm structure, rubberised layer is set.
3. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: the end face be connected with piston only (15) at described piston rod (13), arranges sealing gasket assembly (14).
4. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: described piston rod (13) is made up of steel.
5. according to commercial car membrane type spring braking air chamber for braking system according to claim 4, it is characterized in that: the surface of described piston rod (13) is provided with chromium coating.
6. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: described energy storage cylinder body (1) and connecting cover (6) adopt multiple bolt to be fastenedly connected.
7. according to commercial car membrane type spring braking air chamber for braking system according to claim 6, it is characterized in that: described energy storage cylinder body (1) and the joint of connecting cover (6), arrange O-ring seals (5).
8. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: described connecting cover (6), diaphragm (7) and diaphragm cylinder body (12) are fastenedly connected by clip (8).
9. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: under the effect of described return spring (10), described push rod assembly (11) and diaphragm (7) are close to.
10. according to commercial car membrane type spring braking air chamber for braking system according to claim 1, it is characterized in that: the end face be connected with piston only (15) at described piston rod (13), arranges sealing gasket assembly (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799118.5A CN104405800A (en) | 2014-12-20 | 2014-12-20 | Diaphragm type spring brake chamber of brake system of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799118.5A CN104405800A (en) | 2014-12-20 | 2014-12-20 | Diaphragm type spring brake chamber of brake system of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405800A true CN104405800A (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410799118.5A Pending CN104405800A (en) | 2014-12-20 | 2014-12-20 | Diaphragm type spring brake chamber of brake system of commercial vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN104405800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306844A (en) * | 2021-05-06 | 2022-11-08 | 采埃孚商用车系统欧洲有限公司 | Spring brake actuator |
-
2014
- 2014-12-20 CN CN201410799118.5A patent/CN104405800A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306844A (en) * | 2021-05-06 | 2022-11-08 | 采埃孚商用车系统欧洲有限公司 | Spring brake actuator |
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Application publication date: 20150311 |