CN103738334A - High-strength suspension type air chamber support - Google Patents
High-strength suspension type air chamber support Download PDFInfo
- Publication number
- CN103738334A CN103738334A CN201310720636.9A CN201310720636A CN103738334A CN 103738334 A CN103738334 A CN 103738334A CN 201310720636 A CN201310720636 A CN 201310720636A CN 103738334 A CN103738334 A CN 103738334A
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- China
- Prior art keywords
- air chamber
- chamber support
- support
- rack body
- brake
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Abstract
The invention discloses a high-strength suspension type air chamber support connected between a drive axle and an automotive chassis. The air chamber support is integrally formed by a support body and a supporting block, wherein the support body is connected with a brake air chamber, an air chamber pushing rod in the brake air chamber is connected with an adjusting arm, the adjusting arm penetrates the support body and enters into a cam shaft to be connected with a cam shaft spline, the support body extends into a brake base plate and is fixedly connected with the brake base plate through a bolt, and the supporting block is vertically in contact with and drives an axle casing of the drive axle. The air chamber support is reasonable in stress, and risk that a fixing bolt breaks due to overlarge eccentric loading is avoided. In addition, the operation that drilling and tapping of threaded holes are performed on existing axle casing lugs is omitted, and axle casing oil seepage (leakage) risk is reduced.
Description
Technical field
The present invention relates to a kind of automobile brake support.
Background technology
Air chamber support (hereinafter to be referred as support) belongs to support parts on axle assembly, is arranged on axle assembly.Main Function has two aspects: the one, between vehicle bridge and car chassis, obtain heavy connection; The 2nd, two spring type brake air chambers are installed on support, automobile will be to compressed air brake cylinder qi of chong channel ascending adversely when braking, and the straight-line motion of compressed air brake cylinder piston rod is converted into automatic adjusting arm and rotates, thereby camshaft angular motion impels brake shoe brake cheek to open, brake shoe brake cheek and brake wheel laminating, realize car load braking object.If therefore losing efficacy appears in support, directly affect braking performance of vehicle, and the reliability that is connected with chassis of axle assembly etc.
The air chamber support of current 10 tonnes of drive axles is hanging type structures, and air chamber support and back-plate are fixed with bolt connecting mode and born moment of torsion by bolt.13 tonnes of drive axles are because of after load-carrying capacity improves, brake torque also must promote, therefore air chamber support is to be threaded with axle housing by axle housing lug (casting bridge shell casts out boss), this structure stress rationally and mature and reliable, but in axle housing manufacturing process, the situation that often exists thread Pilot hole to drill, the lubricating oil of axle housing inside oozes out from here, affects attractive in appearance and causes the risk of internal gear oil starvation.
Address this problem and can adopt hanging type air chamber support, can avoid brill, tapping hole on axle housing, but the additional moment that the tie bolt of suspended scaffold and back-plate bears is bigger than normal, has security risk.Restructure necessary.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defect, and a kind of more floated air chamber support of high strength of high torque that bears is provided.
Object of the present invention is carried out specific implementation by the following technical programs:
The floated air chamber support of a kind of high strength, be connected between drive axle and car chassis, described air chamber support is one-body molded by rack body and back-up block, described rack body is connected with compressed air brake cylinder, and the air chamber push rod in compressed air brake cylinder is connected with adjustment arm, adjusts wall and enters in camshaft through rack body, be connected with cam shaft spline, rack body stretches in back-plate, and is bolted to connection with back-plate, and described back-up block vertically contacts the axle housing body of drive axle.
Preferably, described rack body is fixedly connected with by four bolts of even substep with back-plate.
Preferably, described camshaft is S type.
Preferably, described air chamber support is casting spheroidal graphite iron pattern, cast steel pattern or punch welding pattern.
Current air chamber support and back-plate adopt four bolts to fix and bear the additional moment of air chamber push rod power, when camshaft length increases and air chamber air pressure increasing (air pressure of driving a vehicle at present is increased to 1.0MPa by 0.8MPa), the additional moment that bolt bears so increases by geometric progression.
Air chamber support of the present invention stretches into base plate by air chamber support, and bolt has been fixation, meanwhile, cast out with air chamber support simultaneously the vertical contact bridge housing of back-up block, like this, the additional moment producing during braking is born by back-plate and axle housing body.Through so improving, the strained condition of air chamber support is improved than in the past a lot.
Air chamber support reasonable stress of the present invention, avoids bolt of rear end plate to be subject to unbalance loading too greatly and the risk of fracture; And cancel existingly on axle housing body lug, bore, tapping hole, reduce axle housing and ooze (leakages) alopecia areata by inches.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of air chamber support of the present invention in braking product assembly;
Fig. 2 is air chamber support assembling relationship figure of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figure 1, 2, the floated air chamber support of a kind of high strength, be connected between drive axle and car chassis, described air chamber support is one-body molded by rack body 1 and back-up block 2, described rack body 1 is connected with compressed air brake cylinder, air chamber push rod in compressed air brake cylinder is connected with adjustment arm 3, adjusting wall 3 enters in S type camshaft through rack body 1, with S type camshaft with inside and outside spline joint, rack body 1 stretches in back-plate 5, and by four bolts 6 of even substep, be fixedly connected with the axle housing body of the vertical contact drive axle of described back-up block 2 with back-plate 5.The release of air chamber push rod makes to adjust arm 3 and rotates, and synchronously drives S type camshaft 2 to rotate, and plays the function of opening brake shoe brake cheek generation braking.
Described air chamber support is casting spheroidal graphite iron pattern, cast steel pattern or punch welding pattern.
Air chamber support of the present invention stretches into base plate, and bolt has been fixation, meanwhile, cast out with air chamber support simultaneously the vertical contact bridge housing of back-up block, as shown in Figure 2.Like this, the additional moment producing during braking is born by back-plate and axle housing body.Through so improving, the strained condition of air chamber support is improved than in the past a lot.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. the floated air chamber support of high strength, be connected between drive axle and car chassis, it is characterized in that: described air chamber support is one-body molded by rack body and back-up block, described rack body is connected with compressed air brake cylinder, and the air chamber push rod in compressed air brake cylinder is connected with adjustment arm, adjusts wall and enters in camshaft through rack body, be connected with cam shaft spline, rack body stretches in back-plate, and is bolted to connection with back-plate, and described back-up block vertically contacts the axle housing body of drive axle.
2. the floated air chamber support of high strength according to claim 1, is characterized in that: described rack body is fixedly connected with by four bolts of even substep with back-plate.
3. the floated air chamber support of high strength according to claim 1 and 2, is characterized in that: described camshaft is S type.
4. the floated air chamber support of high strength according to claim 1 and 2, is characterized in that: described air chamber support is casting spheroidal graphite iron pattern, cast steel pattern or punch welding pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720636.9A CN103738334A (en) | 2013-12-24 | 2013-12-24 | High-strength suspension type air chamber support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720636.9A CN103738334A (en) | 2013-12-24 | 2013-12-24 | High-strength suspension type air chamber support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103738334A true CN103738334A (en) | 2014-04-23 |
Family
ID=50495434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310720636.9A Pending CN103738334A (en) | 2013-12-24 | 2013-12-24 | High-strength suspension type air chamber support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103738334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754857A (en) * | 1982-06-07 | 1988-07-05 | Eaton Corporation | Universal air chamber mounting bracket |
| CN2640829Y (en) * | 2003-05-26 | 2004-09-15 | 中国重型汽车集团有限公司 | Brake air chamber support of heavy lorry |
| CN201842086U (en) * | 2010-10-26 | 2011-05-25 | 安徽福马车桥有限公司 | Suspension-type brake air chamber bracket for automobile drive axle |
| CN202806735U (en) * | 2012-03-31 | 2013-03-20 | 北汽福田汽车股份有限公司 | Brake air chamber support, brake air chamber installing structure, air pressure brake system, and vehicle |
-
2013
- 2013-12-24 CN CN201310720636.9A patent/CN103738334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754857A (en) * | 1982-06-07 | 1988-07-05 | Eaton Corporation | Universal air chamber mounting bracket |
| CN2640829Y (en) * | 2003-05-26 | 2004-09-15 | 中国重型汽车集团有限公司 | Brake air chamber support of heavy lorry |
| CN201842086U (en) * | 2010-10-26 | 2011-05-25 | 安徽福马车桥有限公司 | Suspension-type brake air chamber bracket for automobile drive axle |
| CN202806735U (en) * | 2012-03-31 | 2013-03-20 | 北汽福田汽车股份有限公司 | Brake air chamber support, brake air chamber installing structure, air pressure brake system, and vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
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Application publication date: 20140423 |