CN103661347A - Rear axle housing with high-intensity brake bottom plates - Google Patents
Rear axle housing with high-intensity brake bottom plates Download PDFInfo
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- CN103661347A CN103661347A CN201310667859.3A CN201310667859A CN103661347A CN 103661347 A CN103661347 A CN 103661347A CN 201310667859 A CN201310667859 A CN 201310667859A CN 103661347 A CN103661347 A CN 103661347A
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- plate
- brake bottom
- housing
- bottom plates
- rear axle
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Abstract
The invention discloses a rear axle housing with high-intensity brake bottom plates. The rear axle housing with the high-intensity brake bottom plates comprises a housing body, the pair of brake bottom plates is symmetrically installed at the flange plate installation positions of the two ends of the housing body, each brake bottom plate is provided with a center shaft hole, the center shaft holes are in fit with the flange plate installation positions of the housing body in outer contour, one end of a plate body of each brake bottom plate is provided with a supporting pin hole, the other end of the plate body of each brake bottom plate is provided with a cam shaft installation hole in the axial direction of the housing body, and the brake bottom plates are welded to the housing body. The rear axle housing with the high-intensity brake bottom plates is better in rigidity, the tissue defect of materials is overcome in the forging process, the mechanical property is improved, and the brake bottom plates are higher than an existing casting brake bottom plate in yield strength and tensile strength of materials.
Description
Technical field
The present invention relates to vehicle bridge technical field, more particularly, it relates to a kind of high strength back-plate rear-axle casing.
Background technology
Motor vehicle braking system is the important component part of vehicle, also be the key that guarantees normal vehicle operation, its principle of work is to utilize the non-rotating element being connected with vehicle frame and the phase mutual friction between the rotating element being connected with wheel (or transmission shaft) to stop the trend of rotation or the rotation of wheel.Brake system is mainly comprised of parts such as back-plate, brake wheel, brake shoe brake cheek, pull back spring, locating dowel pins.Back-plate is arranged on the fixed position of vehicle bridge, and it is fixed, and brake shoe brake cheek, pull back spring, locating dowel pin are housed above, the rotary torsion while bearing braking.Back-plate major part in existing, on rear-axle casing is with ZG270-480H casting, during it is arranged on by bolt, on the braking flange of rear-axle casing, be detouchable Split type structure.On back-plate, include central shaft hole (being inserted in axle housing for cover), in one end of base plate, be provided with on supporting pin-and-hole, the other end and be provided with camshaft mounting hole, a pair of brake shoe brake cheek symmetry is arranged on the both sides of back-plate, one end of brake shoe brake cheek connects the bearing pin on supporting pin-and-hole, the other end coordinates with the S head of camshaft by roller, thereby realizes braking object.Because back-plate need to be connected with braking bolt with flange, therefore, around its central shaft hole, be designed with annular flange assembling profile, therefore, increased the gross weight of back-plate, be unfavorable for the requirement of vehicle bridge lightness.And foundry goods back-plate easily exists the technique vice propers, particularly sand holes such as crack, pore, loose, sand holes, slag inclusion, defect is not easy to be got rid of by flaw detection, makes parts have hidden danger of quality, has affected the time between failures of vehicle bridge.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides that a kind of intensity is higher, the high strength back-plate rear-axle casing of better reliability, avoid casting the vice proper of base plate casting itself, and stop bolt and connect the hidden danger of quality such as loosening, thread failure.
The technical scheme that the present invention solves its technical matters is: high strength back-plate rear-axle casing, comprise housing, on flange installation site, described housing two ends, be symmetrically installed with a pair of back-plate, described back-plate is provided with central shaft hole, the outline of the flange installation site of described central shaft hole and described housing is suitable, plate body one end of described back-plate is provided with supporting pin-and-hole, the plate body other end of described back-plate is axially arranged with camshaft mounting hole along described housing, and described back-plate is welded on housing.
Described back-plate is by the moulding of base plate blank forging.
The moulding of described base plate blank forging by bakingout process operation after, then be welded on housing.
Described base plate blank is Q345D material.
The invention has the beneficial effects as follows:
1. adopt the middle Rear Axle of welding back-plate higher, rigidity is better.In forging process, eliminate the tissue defects of material itself, improved the performance of running a school.Its back-plate material yield intensity is all strong than existing casting back-plate with tensile strength.Wherein, yield strength reaches 345MPa, and tensile strength is within the scope of 470--630 MPa.
2. back-plate of the present invention carries out fine limit work after welding, can guarantee the accuracy requirement of installation dimension.Adopt back-plate of the present invention can reduce the parts such as bolt, braking flange, more be conducive to production control and after-sales service, and welding back-plate axle case assy, than the lightweight 16.2Kg of the split type back-plate axle case assy of same model, meets vehicle bridge lightweight requirements.
3. welding back-plate axle housing test axle housing is vertically tired, under 2.5 times of load, is greater than 8X10 fatigue life
5.Under specified brake torque, brake system is greater than 20,000 times fatigue life.23310 kilometers of road examinations, welding back-plate trouble free.
Accompanying drawing explanation
Fig. 1 is high strength back-plate rear-axle casing schematic perspective view of the present invention.
Fig. 2 is the structural representation one of high strength back-plate rear-axle casing of the present invention.
Fig. 3 is the structural representation two of high strength back-plate rear-axle casing of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As Figure 1-3, high strength back-plate rear-axle casing of the present invention, comprise housing 2, on flange installation site, housing two ends, be symmetrically installed with a pair of back-plate 1, back-plate 1 is provided with central shaft hole 11, and central shaft hole 11 is suitable with the outline of the flange installation site of housing, therefore, back-plate can be nested into flange installation site from housing two ends, the fillet weld of then burn-oning a circle full weld or welding the preceding paragraph arc along the cylindrical of central shaft hole.Plate body one end of back-plate 1 is provided with supporting pin-and-hole 13, at the plate body other end of back-plate along described housing, is axially arranged with camshaft mounting hole 12.
Back-plate 1 is by the moulding of base plate blank forging, adopts Q345D material, at forging molding, by bakingout process operation, then is welded on housing.After bakingout process, can effectively solve the inhomogeneous defect of crystal grain that forging easily occurs, thereby make to forge that back-plate casts that base plate is controlled in material, intensity, defect, all there is clear superiority on working accuracy.
Of the present invention relatively simple for structure, to cancel flange, and reduced the assembly parts such as bolt, nut, spring washer, actv. has alleviated the weight of whole bridge, has reduced productive costs low, has improved the competitiveness of product in market.
Claims (4)
1. high strength back-plate rear-axle casing, comprise housing, it is characterized in that: on flange installation site, described housing two ends, be symmetrically installed with a pair of back-plate, described back-plate is provided with central shaft hole, the outline of the flange installation site of described central shaft hole and described housing is suitable, plate body one end of described back-plate is provided with supporting pin-and-hole, and the plate body other end of described back-plate is axially arranged with camshaft mounting hole along described housing, and described back-plate is welded on housing.
2. high strength back-plate rear-axle casing according to claim 1, is characterized in that: described back-plate is by the moulding of base plate blank forging.
3. high strength back-plate rear-axle casing according to claim 2, is characterized in that: the moulding of described base plate blank forging by bakingout process operation after, then be welded on housing.
4. high strength back-plate rear-axle casing according to claim 3, is characterized in that: described base plate blank is Q345D material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667859.3A CN103661347A (en) | 2013-12-07 | 2013-12-07 | Rear axle housing with high-intensity brake bottom plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667859.3A CN103661347A (en) | 2013-12-07 | 2013-12-07 | Rear axle housing with high-intensity brake bottom plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103661347A true CN103661347A (en) | 2014-03-26 |
Family
ID=50300482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310667859.3A Pending CN103661347A (en) | 2013-12-07 | 2013-12-07 | Rear axle housing with high-intensity brake bottom plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103661347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385911A (en) * | 2014-11-24 | 2015-03-04 | 南京创捷和信汽车零部件有限公司 | Front steering drive axle for large tractor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301774A (en) * | 1990-06-26 | 1994-04-12 | Fruehauf Trailer Corporation | Brake spider assembly |
| WO2001046600A1 (en) * | 1999-12-23 | 2001-06-28 | Dana Corporation | Vehicle axle beam and brake assembly |
| CN201456937U (en) * | 2009-02-28 | 2010-05-12 | 东风德纳车桥有限公司 | Automobile driving axle case |
| US20100193303A1 (en) * | 2009-02-05 | 2010-08-05 | Bendix Spicer Foundation Brake Llc | Brake spider weldment and anchor pin assembly |
| CN201858289U (en) * | 2010-10-26 | 2011-06-08 | 湖南中联重科车桥有限公司 | Brake bottom plate and brake bottom plate component |
| CN203567715U (en) * | 2013-12-07 | 2014-04-30 | 广东富华重工制造有限公司 | High-intensity brake bottom plate rear axle housing |
-
2013
- 2013-12-07 CN CN201310667859.3A patent/CN103661347A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301774A (en) * | 1990-06-26 | 1994-04-12 | Fruehauf Trailer Corporation | Brake spider assembly |
| WO2001046600A1 (en) * | 1999-12-23 | 2001-06-28 | Dana Corporation | Vehicle axle beam and brake assembly |
| US20100193303A1 (en) * | 2009-02-05 | 2010-08-05 | Bendix Spicer Foundation Brake Llc | Brake spider weldment and anchor pin assembly |
| CN201456937U (en) * | 2009-02-28 | 2010-05-12 | 东风德纳车桥有限公司 | Automobile driving axle case |
| CN201858289U (en) * | 2010-10-26 | 2011-06-08 | 湖南中联重科车桥有限公司 | Brake bottom plate and brake bottom plate component |
| CN203567715U (en) * | 2013-12-07 | 2014-04-30 | 广东富华重工制造有限公司 | High-intensity brake bottom plate rear axle housing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385911A (en) * | 2014-11-24 | 2015-03-04 | 南京创捷和信汽车零部件有限公司 | Front steering drive axle for large tractor |
| CN104385911B (en) * | 2014-11-24 | 2017-03-15 | 南京创捷和信汽车零部件有限公司 | Large tractor front steering drive axle |
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Application publication date: 20140326 |