CN103507566A - Rear axle shaft of car - Google Patents
Rear axle shaft of car Download PDFInfo
- Publication number
- CN103507566A CN103507566A CN201210221467.XA CN201210221467A CN103507566A CN 103507566 A CN103507566 A CN 103507566A CN 201210221467 A CN201210221467 A CN 201210221467A CN 103507566 A CN103507566 A CN 103507566A
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- Prior art keywords
- axle shaft
- flange
- holes
- semiaxis
- flange disc
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Abstract
A rear axle shaft of a car comprises an axle shaft and a flange disc arranged at an end portion of the axle shaft, wherein five wheel bolt holes are evenly distributed in the flange disc on the axle shaft in the circumferential direction, receding through holes for installation receding of a brake base plate are formed in the flange disc of the axle shaft, the number of the receding through holes is five, and the receding through holes are round through holes and are evenly distributed in the flange disc. The rear axle shaft of the car adopts a five-bolt arrangement method so that driving force can be evenly distributed on the five bolts, the bearing force of each bolt is reduced, the service life of the bolts of a wheel is prolonged, and the requirement for large loading capacity of a whole car is met. Meanwhile, the five round through holes are formed in the flange disc, the mass of the flange disc of the axle shaft is distributed evenly, and the centrifugal force balance of the flange disc of the axle shaft is guaranteed when the axle shaft rotates at high speed.
Description
Technical field
The invention belongs to vehicle transmission, braking technology, be specifically related to the jack shaft structure of automobile.
Background technology
Existing rear drive axle differential axle of vehicle structure major part is all by be uniformly distributed four wheel bolt holes on semiaxis flange, carrys out installing wheel, thereby power is delivered to wheel from main reduction gear by four wheel bolts of packing.Because the layout load-carrying capacity of four wheel bolts is restricted, and because the layout of brake system is subject to the impact of arrangement, the size of rear brake can not be too large.Therefore,, when brake support plate is installed, need on semiaxis flange, there is the bit space that allows of installing to brake support plate.But in order to meet the kinetic balance of the flange of semiaxis, allow the quantity of bit space be necessary for two or four (with respect to four wheel bolt structures), but intensity that so can double axial flange dish make a big impact.
Patent documentation CN 101209650A discloses " a kind of car rear axle semi-axis structure ", and as shown in Figure 1, in figure, 11 is wheel bolt hole to its structure, 12 is the breach of stepping down, 13 is flange, and what this semiaxis adopted as seen is five wheel bolts, two structures that allow bit space.This structure had both met the requirement of whole bearing capability, again for space has been abdicated in the installation of brake support plate.Because this structure is that five wheel bolts, two allow bit space, and five wheel bolts are uniformly distributed on semiaxis flange, have so just caused the mass distribution on flange unbalanced.Therefore when car load high-speed cruising, the centnifugal force overbalance that semiaxis flange produces in high-revolving situation, can cause half axis abnormality shake, thereby drive rear driving axle extremely to shake, and affects the traveling comfort of car load.And the bit space that allows that brake support plate is installed is two breach, and the diameter of flange is less, the insufficient strength of flange is good, and under overload or limiting condition, flange has the risk of fracture.
Summary of the invention
The object of the invention is to for prior art above shortcomings, a kind of car rear axle semi-axis structure is provided, meet the large load requirement of car load, stop the potential safety hazard that wheel bolt fracture brings, and abdicate space to the installation of brake system, and make the layout of brake system compacter, solve the unbalanced problem of centnifugal force that semiaxis flange produces in high-revolving situation simultaneously, and make semiaxis intensity more reliable, and reduce costs and weight from certain degree.
Technical scheme of the present invention is as follows:
A kind of car rear axle semi-axis, the semiaxis flange that comprises semiaxis and end, on semiaxis flange, be along the circumferential direction evenly distributed with five wheel bolt holes, the transmission of power of car load is born to change into by five wheel bolts by four original wheel bolts and bear, reduce the load of each wheel bolt, thereby prevented the potential safety hazard that wheel bolt fracture brings.
Simultaneously, on semiaxis flange, have the through hole of stepping down of stepping down for brake support plate installation, the through hole of stepping down arranges five, for manhole, also on flange, be uniformly distributed, thereby meet the layout of rear brake in brake system, make the middle perforate of real brake bottom blank very little, can well be arranged between semiaxis and rear-axle casing.Five manholes have been abdicated space to the installation of brake support plate, thereby have improved the assembly performance of brake support plate, reduce costs.And because the quantity of manhole is five, combine and make the mass distribution of semiaxis flange become take the Central Symmetry state that half shaft centre line is center of symmetry with five wheel bolt holes, make semiaxis in High Rotation Speed, guaranteed the centrifugal equilibrium of forces of semiaxis flange.
As fully visible, structure of the present invention has adopted the arrangement of five bolts, and propulsive effort is evenly distributed on five bolts, thereby has reduced the bearing capacity of every bolt, in the service life of having improved wheel bolt, has met the requirement of the large load of car load; On flange, arrange five manholes, made the mass distribution of semiaxis flange even, in semiaxis High Rotation Speed, guaranteed the centnifugal force balance of semiaxis flange.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rear axle shaft of prior art;
Fig. 2 is the structural representation of the rear axle shaft that proposes of the present invention;
Fig. 3 is the left view of Fig. 2.
The specific embodiment
Referring to Fig. 2 and Fig. 3, this car rear axle semi-axis comprises the semiaxis flange 1 of semiaxis 5 and end, is evenly distributed with five wheel bolt holes 2 on semiaxis flange 1, also has five, to brake support plate, the circles the step down through hole 4 of stepping down is installed on semiaxis flange 1.Bolt hole 2 and the through hole 4 of stepping down are uniformly distributed at flange circumferencial direction on flange centered by flange center, in the middle of two bolts hole 2, there is the through hole 4 of stepping down, in the middle of two through holes 4 of stepping down, have a bolt hole 2, and each bolt hole 2 center is identical to the distance at flange center with each through hole 4 center of stepping down.
This rear axle semi-axis structure is semi-floating structure, by two bearings, is arranged in rear driving axle axle housing.Propulsive effort is delivered on rear axle shaft by the spline 3 on change-speed box, transmission shaft, main reduction gear, axle side gear, semiaxis, then by 5 bolts that are arranged on semiaxis bolt hole 2, passes to wheel.During installation, first 5 half axle bolts are fitted in respectively on five wheel bolt holes 2 of semiaxis flange 1; Then rear brake is penetrated from Formation of Axle Shaft Spline 3 ends, load onto half axle bush, axle bearing and end ring, by compression machine, carry out the assembling of axle bearing and back-up ring; Minute general name after installing is inserted to rear driving axle axle housing.Then by five circles through hole 4 of stepping down, with four bolts, rear brake is connected with rear-axle casing, then loads onto Back-braking drum, wheel, then with five wheel nuts, wheel is arranged on five and half axle bolts.Rear brake is arranged between semiaxis flange 1 and rear-axle casing, is also arranged on the right side of semiaxis flange 1, by 4 bolts, is arranged on rear-axle casing.And the installation of 4 bolts is to assemble by five circles breach 4 of stepping down, start step down through hole 4 of a circle to aim at the mounting hole of a bolt, assemble after this bolt, rotation semiaxis, one of stepping down in other three bolts hole of through-hole alignment of any one circle that five circles are stepped down in through hole 4, then assembles three remaining bolts successively.
Claims (3)
1. a car rear axle semi-axis, comprises and it is characterized in that the flange of semiaxis and half shaft end: on semiaxis flange, be along the circumferential direction evenly distributed with five wheel bolt holes, and on semiaxis flange, have the through hole of stepping down of stepping down to brake support plate is installed.
2. car rear axle semi-axis according to claim 1, is characterized in that: the described through hole of stepping down has five, is manhole, also on flange, is uniformly distributed.
3. car rear axle semi-axis according to claim 1, is characterized in that: in described each bolt hole, the center of the volume heart and each through hole of stepping down is identical to the distance at flange center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221467.XA CN103507566A (en) | 2012-06-30 | 2012-06-30 | Rear axle shaft of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221467.XA CN103507566A (en) | 2012-06-30 | 2012-06-30 | Rear axle shaft of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103507566A true CN103507566A (en) | 2014-01-15 |
Family
ID=49891199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210221467.XA Pending CN103507566A (en) | 2012-06-30 | 2012-06-30 | Rear axle shaft of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103507566A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001206005A (en) * | 2000-01-28 | 2001-07-31 | Koyo Seiko Co Ltd | Bearing device for axle |
| JP2002002212A (en) * | 2000-06-23 | 2002-01-08 | Koyo Seiko Co Ltd | Bearing unit for axels |
| US20020198075A1 (en) * | 2001-06-21 | 2002-12-26 | Prucher Bryan Paul | Two piece axle shaft |
| CN101209650A (en) * | 2007-12-21 | 2008-07-02 | 重庆长安汽车股份有限公司 | Car rear axle semi-axis structure |
| JP2009292275A (en) * | 2008-06-04 | 2009-12-17 | Jtekt Corp | Bearing device for driving wheel |
| CN201703196U (en) * | 2010-04-08 | 2011-01-12 | 山东华山拖拉机制造有限公司 | Multifunctional half shaft assembly for tractor |
-
2012
- 2012-06-30 CN CN201210221467.XA patent/CN103507566A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001206005A (en) * | 2000-01-28 | 2001-07-31 | Koyo Seiko Co Ltd | Bearing device for axle |
| JP2002002212A (en) * | 2000-06-23 | 2002-01-08 | Koyo Seiko Co Ltd | Bearing unit for axels |
| US20020198075A1 (en) * | 2001-06-21 | 2002-12-26 | Prucher Bryan Paul | Two piece axle shaft |
| CN101209650A (en) * | 2007-12-21 | 2008-07-02 | 重庆长安汽车股份有限公司 | Car rear axle semi-axis structure |
| JP2009292275A (en) * | 2008-06-04 | 2009-12-17 | Jtekt Corp | Bearing device for driving wheel |
| CN201703196U (en) * | 2010-04-08 | 2011-01-12 | 山东华山拖拉机制造有限公司 | Multifunctional half shaft assembly for tractor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140115 |