CN201824872U - Low-floor bus rear axle assembly - Google Patents
Low-floor bus rear axle assembly Download PDFInfo
- Publication number
- CN201824872U CN201824872U CN2010205502853U CN201020550285U CN201824872U CN 201824872 U CN201824872 U CN 201824872U CN 2010205502853 U CN2010205502853 U CN 2010205502853U CN 201020550285 U CN201020550285 U CN 201020550285U CN 201824872 U CN201824872 U CN 201824872U
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- assembly
- rear axle
- gear
- bevel gear
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Abstract
The utility model relates to a vehicle rear axle, in particularly to a low-floor bus rear axle assembly which comprises a rear axle housing, a brake bottom plate, a brake assembly, a hub assembly, a final drive assembly, a left gearbox assembly and a right gearbox assembly. The final drive assembly comprises a differential assembly, a flange assembly, a drive bevel gear and a driven bevel gear. The rear axle housing is respectively connected with one ends of the left gearbox assembly and the right gearbox assembly, and the other ends of the left gearbox assembly and the right gearbox assembly are tightly connected with the brake bottom plate. Perpendicular throw (H) between the top surface of the rear axle housing and the centerline of a wheel is 100 to 125mm. The center of the drive bevel gear is deviated to the left by 300 to 450mm. Through the transitional connection between the rear axle housing and gearboxes, the floor height can be greatly reduced; and through the leftward deviation of the centerline of the drive bevel gear, the area of a low-floor region can be widened. The low-floor bus rear axle assembly has the advantages that the convenience, the comfortableness and the safety in catching a bus can be increased, the driving stability can be improved, the output torque is large, the structure is simple, the weight is light, the bus is convenient to maintain and the like.
Description
Technical field
The utility model relates to a kind of vehicle rear axle, particularly a kind of low-floor bus back axle assembly.
Background technology
Owing to being in operation, passenger vehicle especially city bus has the distinguishing feature that website is intensive, passenger getting on/off is frequent, therefore floor level is directly connected to comfort feature, traveling comfort and the safety that the passenger takes, gets on or off the bus in the car of passenger vehicle, and the too high center of gravity of passenger vehicle that also causes easily of floor level is too high in the car, thereby has influence on the stationarity of passenger vehicle driving.And the rear axle housing body of existing passenger vehicle back axle assembly does not have drop, the back axle assembly of this structure is when carrying out the passenger-carrying chassis layout, because back axle does not have the restriction of drop, cause floor level higher, this has not only reduced comfort feature, traveling comfort and safety that the passenger takes, gets on or off the bus, has also influenced the stationarity of passenger vehicle driving simultaneously; In addition, the main gearbox assembly of existing passenger vehicle back axle assembly all is to be positioned near the autocentre, driving engine, change speed gear box, transmission shaft centering are vertically arranged, it is bigger to take up room, also be to cause one of too high reason of floor level in the car, and existing passenger vehicle back axle assembly output torque is less, is difficult to mate the driving engine of high-power.In addition, the master of present passenger vehicle back axle assembly (as shown in Figure 4) subtracts housing and rear axle housing body separates, and drive bevel gear and formed by adjusting nut of differential bearing 37, bolt 38, differential bearing lid 39, locking plate 40 and bolt 41 by tooth back lash setting device by the master between the dynamic bevel gear, this device adjust main during by the tooth back lash be adjust by adjusting nut of differential bearing 37 suitable after, tighten locking plate 40 again, prevent to become flexible, its complex structure, and adjust cumbersome.Have again, at present the Hub assembly of passenger vehicle back axle assembly as shown in Figure 5, this Hub assembly adopts grease lubrication, wheel hub is not provided with oilhole, maintenance need be dismantled the wheel limit partly when changing oil, and hub bearing adjustment nut when pretension needs readjustment.
Summary of the invention
The main technical problems to be solved in the utility model is: a kind of low-floor bus back axle assembly with big drop structure is provided.
Further technical matters to be solved in the utility model is: make this back axle assembly can mate the more driving engine of high-power, and make the structure of this back axle assembly simpler, meet the light-weight design requirement, make the hub bearing adjustment of this back axle assembly simple, easy maintenance.
The technical scheme that solves above-mentioned technical problem underlying is: a kind of low-floor bus back axle assembly, comprise rear axle housing body, back-plate, Hub assembly, brake assembly, compressed air brake cylinder and main gearbox assembly, described main gearbox assembly mainly constitutes by the differential assembly that is positioned at rear axle housing body, bead assembly, drive bevel gear and by dynamic bevel gear; Described low-floor bus back axle assembly also includes left gear box assembly and right gear box assembly, described rear axle housing body is connected with an end of left and right gearbox assembly respectively, the other end of left and right gearbox assembly links to each other with back-plate is fastening, back-plate again with the wheel limit fastening linking to each other of axle tube.
Perpendicular throw H=100～125mm between described rear axle housing body end face and the wheel center line, the drive bevel gear center of main gearbox assembly by autocentre to left avertence 300～450mm.
Described left gear box assembly comprises the left gear case, is positioned at passive helical wheel, active oblique gear and the idle pulley of left gear case; The right gear box assembly comprises the right gear case, is positioned at passive helical wheel, active oblique gear and the idle pulley of right gear case.
The technical scheme that solves above-mentioned further technical matters is: described differential assembly is connected by the active oblique gear of left semi-minor axis and left gear box assembly, is connected by the active oblique gear of right major semiaxis with the right gear box assembly.
The bevel housing of described main gearbox assembly and rear axle housing body inblock cast form; Described drive bevel gear and comprised differential left outside race pad, drive bevel gear neck bearing pad and diff right bearing outer ring pad by tooth back lash setting device by the master between the dynamic bevel gear; Described differential left outside race pad is installed between differential left bearing and the left gear case, drive bevel gear neck bearing pad is installed between drive bevel gear neck bearing and the rear axle housing body, and diff right bearing outer ring pad is installed between diff right bearing and the rear axle housing body.
A technical scheme more of the present utility model is: the wheel hub of described Hub assembly is provided with the oilhole that leads to wheelboss inner hole; And between two hub bearings of wheelboss inner hole, be provided with accurate spacer ring.
Described brake assembly comprises right disk brake assembly and left disk brake assembly.
Because adopt said structure, the low-floor bus back axle assembly of the utility model is compared with existing passenger vehicle back axle assembly, has following beneficial effect:
1, reduced the floor level that the car load chassis is arranged to greatest extent:
Because the low-floor bus back axle assembly of the utility model includes left gear box assembly and right gear box assembly, therefore be connected by transition between rear axle housing body and the back-plate with this left and right sides gearbox assembly, can make rear axle housing body end face and wheel center form the drop of H=100～125mm, thereby the floor level that the car load chassis is arranged is reduced to greatest extent, not only increase comfort feature, traveling comfort and safety that the passenger takes, gets on or off the bus, also improved the stationarity of passenger vehicle driving simultaneously.
2, can increase the area in low floor zone:
Since the drive bevel gear center of the utility model main gearbox assembly by autocentre to left avertence L=300～450mm, be convenient to the horizontal or lateral arrangement of driving engine, make driving engine further move to the tailstock backward, can increase the area in low floor zone, thereby further improve the traveling comfort of taking.
3, output torque is big:
Because the differential assembly of main gearbox assembly described in the utility model is connected by the active oblique gear of left semi-minor axis and left gear box assembly, be connected by the active oblique gear of right major semiaxis with the right gear box assembly, therefore, power through the car transmission shaft after the bead assembly is passed to drive bevel gear, obtain first order deceleration by drive bevel gear and by dynamic bevel gear, form differential by differential assembly then, the left side is imported the left gear box assembly into by left semi-minor axis, the right is imported the right gear box assembly into by right major semiaxis, by a left side, the active oblique gear of right gear box assembly, passive helical wheel and obtain the second stage and slow down, by this double reduction, can obtain bigger transmission speed ratio (the most at a high speed than reaching 6.2), and the bigger output torque of acquisition, its max. output torque can reach 50000N.m, thereby can make this back axle assembly can mate the more driving engine of high-power.
4, compact conformation is simple, and assembly part is few:
Because the bevel housing and the rear axle housing body cast solid of main gearbox assembly described in the utility model, and cancelled the employed adjustment nut structure of present main gearbox assembly, main is to be guaranteed by tooth back lash setting device by main by the tooth back lash, wherein this device is by differential left outside race pad, drive bevel gear neck bearing pad and diff right bearing outer ring pad are formed, assembling is preceding by selecting pad machine meter to calculate differential left outside race pad, the thickness of drive bevel gear neck bearing pad and diff right bearing outer ring pad, the above-mentioned pad of packing into earlier before the last item bearing outer-ring, the accurate dimension by pad guarantees that suitable master is by the tooth back lash.Therefore, structure of the present utility model is compact simple, and assembly part also greatly reduces.
5, actv. has alleviated the weight of whole bridge, meets light-weight design and requires:
Because the master of main gearbox assembly described in the utility model subtracts housing and the rear axle housing body inblock cast forms, and cancelled the adjustment nut structure, therefore its main gearbox assembly volume partly is less, assembly part also significantly reduces, thereby but actv. alleviates the weight of whole bridge, meets the light-weight design requirement.
6, the hub bearing adjustment is simple, easy maintenance:
Between two hub bearings of wheelboss inner hole, be provided with accurate spacer ring owing to of the present utility model, adopt this precision spacer ring can guarantee two pretension gaps between the hub bearing, after tightening adjustment nut, must not adjust back again, so its adjustment is fairly simple as traditional approach; And because hub bearing of the present utility model is to adopt oil lubrication, and on wheel hub, be provided with the oilhole that leads to wheelboss inner hole, and need not dismantle the wheel limit during maintenance partly, directly changing oil gets final product, and its maintenance is more convenient.
7, noise is low:
The drive bevel gear of main gearbox assembly described in the utility model, all adopted high-precision import gear, thereby can make the noise of low-floor bus back axle assembly of the utility model low more than 5 decibels by the whole gears in dynamic bevel gear and a left side, the gearbox assembly.
8, productive costs is low, is easy to promote the use of:
Because of the present utility model relatively simple for structure, in light weight, so its productive costs also decreases, and relatively is easy to promote the use of.
Below, the technical characterictic to the low-floor bus back axle assembly of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings
Fig. 1: the structural representation of the low-floor bus back axle assembly of the utility model;
Fig. 2: the structural representation of main gearbox assembly described in the utility model;
Fig. 3: the structural representation of Hub assembly described in the utility model;
Fig. 4: the structural representation of the main gearbox assembly of present passenger vehicle back axle assembly;
Fig. 5: the structural representation of the Hub assembly of present passenger vehicle back axle assembly;
The label declaration of each vital parts is as follows among the figure:
The 1-rear axle housing body, the 2-socket bolt, 3-right gear case, the 4-back-plate,
The 5-socket bolt, the 6-axle tube, 7, the 9-hub bearing, the accurate spacer ring of 8-,
The 10-wheel hub, the 101-oilhole, the 11-semiaxis, the right disk brake assembly of 12-,
The 13-compressed air brake cylinder, 14-left side disk brake assembly, 15-left side semi-minor axis, 16-left gear case,
The 17-socket bolt, the passive helical wheel of 18-, the 19-active oblique gear, the 20-idle pulley,
21-differential left shell, the 22-differential right casing, the 23-planetary wheel, the 24-axle side gear,
The 25-center cross, the right major semiaxis of 26-, 27-bead assembly, the 28-drive bevel gear,
29-is by dynamic bevel gear, 30-differential left bearing, and 31-differential left outside race pad,
The 32-tapered roller bearing, 33-drive bevel gear neck bearing pad, 34-drive bevel gear neck bearing,
35-diff right bearing outer ring pad, 36-diff right bearing,
The 37-adjusting nut of differential bearing, the 38-bolt, 39-differential bearing lid,
The 40-locking plate, the 41-bolt.
The specific embodiment
Disclosed among Fig. 1 is a kind of low-floor bus back axle assembly, it comprises rear axle housing body 1, back-plate 4, Hub assembly, brake assembly, compressed air brake cylinder 13 and main gearbox assembly, and described main gearbox assembly mainly constitutes by the differential assembly that is positioned at rear axle housing body 1, bead assembly 27, drive bevel gear 28 and by dynamic bevel gear 29; Differential assembly comprises differential left shell 21, differential right casing 22, planetary wheel 23, axle side gear 24, center cross 25 and differential left bearing 30 and diff right bearing 36 again, described low-floor bus back axle assembly also includes left gear box assembly and right gear box assembly, and the left gear box assembly comprises left gear case 16, is positioned at the passive helical wheel 18 of left gear case 16, active oblique gear 19 and idle pulley 20; The right gear box assembly comprises right gear case 3, is positioned at the passive helical wheel 18 of right gear case 3, active oblique gear 19 and idle pulley 20; Described rear axle housing body 1 is connected with an end of right gear case 3 by socket bolt 2, be connected with an end of left gear case 16 by socket bolt 17, the other end of left and right gear case again by socket bolt be installed in be positioned at the wheel limit axle tube 6 on 4 fastening linking to each other of back-plate; Between described rear axle housing body 1 and the back-plate 4 by being connected with the transition of this left and right gearbox assembly, thereby can make and form a diff-H between rear axle housing body 1 end face and the wheel center line, the perpendicular throw H=112mm of this diff-H arranges needed floor level to obtain to guarantee low floor passenger-carrying chassis; Drive bevel gear 28 centers of described main gearbox assembly by autocentre (being the center of this low-floor bus back axle assembly) to left avertence 380mm, be convenient to the horizontal or lateral arrangement of driving engine, make driving engine further move to the tailstock backward, can increase the area in low floor zone.
The differential assembly of described main gearbox assembly is connected by the active oblique gear 19 of left semi-minor axis 15 and left gear box assembly, and the active oblique gear 19 by right major semiaxis 26 and right gear box assembly is connected.Power through the car transmission shaft after bead assembly 27 is passed to drive bevel gear 28, obtain first order deceleration by drive bevel gear 28 and by dynamic bevel gear 29, form differential by differential assembly then, the left side is imported the left gear case into by left semi-minor axis 15, the right is imported the right gear case into by right major semiaxis 26, and active oblique gear 19, the passive helical wheel 18 by left and right gearbox assembly obtains second stage deceleration.
Brake assembly described in the utility model adopts right disk brake assembly 12 and left disk brake assembly 14, and this left side disk brake assembly 14, right disk brake assembly 12 connect with back-plate 4, Hub assembly by bolt.
As shown in Figure 2, the master of described main gearbox assembly subtracts housing and rear axle housing body 1 and adopts the ductile cast iron material inblock cast to form, described drive bevel gear 28 and be made up of differential left outside race pad 31, drive bevel gear neck bearing pad 33 and diff right bearing outer ring pad 35 by tooth back lash setting device by the master between the dynamic bevel gear 29; Described differential left outside race pad 31 is installed between differential left bearing 30 and the left gear case 16, drive bevel gear neck bearing pad 33 is installed between drive bevel gear neck bearing 34 and the rear axle housing body 1, and diff right bearing outer ring pad 35 is installed between diff right bearing 36 and the rear axle housing body 1.Main is to guarantee by this differential left outside race pad 31, drive bevel gear neck bearing pad 33 and diff right bearing outer ring pad 35 by the tooth back lash; Assembling is preceding by selecting pad machine meter to calculate the thickness of differential left outside race pad 31, drive bevel gear neck bearing pad 33 and diff right bearing outer ring pad 35, the above-mentioned pad of packing into earlier before the last item bearing outer-ring, the accurate dimension by pad guarantees that suitable master is by the tooth back lash.
As shown in Figure 3, the utility model adopts oil lubrication, and the wheel hub 10 of described Hub assembly is provided with the oilhole 101 that leads to wheelboss inner hole; And between two hub bearings 7,9 of wheel hub 10 endoporus, being provided with accurate spacer ring 8, the required pretension gap that reaches of hub bearing guarantees that by accurate spacer ring size when assembling, the adjustment nut that need only tighten on the central siphon gets final product.
The drive bevel gear of main gearbox assembly described in the utility model, all adopted high-precision import gear by the whole gears in dynamic bevel gear and the left and right gearbox assembly, it can make the noise of low-floor bus back axle assembly of the utility model low more than 5 decibels.
As a kind of conversion of present embodiment, the value of the perpendicular throw H between described rear axle housing body end face and the wheel center line can increase or reduce according to actual needs, promptly can get the arbitrary numerical value between 100～125mm; In like manner, the distance of the drive bevel gear center left avertence of main gearbox assembly also can increase according to the layout needs of bus engine, change speed gear box or reduce, and promptly can get the arbitrary numerical value between 300～450mm.
Claims (7)
1. low-floor bus back axle assembly, comprise rear axle housing body (1), back-plate (4), Hub assembly, brake assembly, compressed air brake cylinder (13) and main gearbox assembly, described main gearbox assembly mainly constitutes by the differential assembly that is positioned at rear axle housing body (1), bead assembly (27), drive bevel gear (28) and by dynamic bevel gear (29); It is characterized in that: described low-floor bus back axle assembly also includes left gear box assembly and right gear box assembly, described rear axle housing body (1) is connected with an end of left and right gearbox assembly respectively, the other end of left and right gearbox assembly and fastening linking to each other of back-plate (4), back-plate (4) again with the wheel fastening linking to each other of limit axle tube (6).
2. low-floor bus back axle assembly according to claim 1 is characterized in that: the perpendicular throw H=100～125mm between described rear axle housing body (1) end face and the wheel center line, the drive bevel gear center of main gearbox assembly by autocentre to left avertence
300～450Mm.
3. low-floor bus back axle assembly according to claim 2 is characterized in that: described left gear box assembly comprises left gear case (16), is positioned at the passive helical wheel (18) of left gear case (16), active oblique gear (19) and idle pulley (20); The right gear box assembly comprises right gear case (3), is positioned at the passive helical wheel (18) of right gear case (3), active oblique gear (19) and idle pulley (20).
4. low-floor bus back axle assembly according to claim 3, it is characterized in that: described differential assembly is connected by the active oblique gear (19) of left semi-minor axis (15) and left gear box assembly, and the active oblique gear (19) by right major semiaxis (26) and right gear box assembly is connected.
5. low-floor bus back axle assembly according to claim 1 is characterized in that: the bevel housing of described main gearbox assembly and rear axle housing body (1) inblock cast forms; Described drive bevel gear (28) and comprised differential left outside race pad (31), drive bevel gear neck bearing pad (33) and diff right bearing outer ring pad (35) by tooth back lash setting device by the master between the dynamic bevel gear (29); Described differential left outside race pad (31) is installed between differential left bearing (30) and the left gear case (16), drive bevel gear neck bearing pad (33) is installed between drive bevel gear neck bearing (34) and the rear axle housing body (1), and diff right bearing outer ring pad (35) is installed between diff right bearing (36) and the rear axle housing body (1).
6. low-floor bus back axle assembly according to claim 1 is characterized in that: the wheel hub of described Hub assembly (10) is provided with the oilhole (101) that leads to wheelboss inner hole; And between two hub bearings (7,9) of wheel hub (10) endoporus, be provided with accurate spacer ring (8).
7. according to the described low-floor bus back axle assembly of arbitrary claim in the claim 1～6, it is characterized in that: described brake assembly comprises right disk brake assembly (12) and left disk brake assembly (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205502853U CN201824872U (en) | 2010-09-30 | 2010-09-30 | Low-floor bus rear axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205502853U CN201824872U (en) | 2010-09-30 | 2010-09-30 | Low-floor bus rear axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201824872U true CN201824872U (en) | 2011-05-11 |
Family
ID=43963425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205502853U Expired - Lifetime CN201824872U (en) | 2010-09-30 | 2010-09-30 | Low-floor bus rear axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201824872U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296658A (en) * | 2011-05-30 | 2011-12-28 | 临颍县颍机机械制造有限公司 | Agricultural four-drive air-brake rear-steering weed-grasping machine with integral stand |
| CN104553614A (en) * | 2015-01-05 | 2015-04-29 | 中国重汽集团福建海西汽车有限公司 | Car rear drive axle device and car |
| CN105172587A (en) * | 2015-09-24 | 2015-12-23 | 重庆大江工业有限责任公司 | Rear drive axle of Z type passenger car with rear engine |
| CN106151316A (en) * | 2016-08-17 | 2016-11-23 | 中国重汽集团济南动力有限公司 | The disk brake assembly that air chamber is positioned radially |
| CN108407609A (en) * | 2018-05-14 | 2018-08-17 | 安徽安凯汽车股份有限公司 | A kind of independent suspension electric drive front steering axle |
-
2010
- 2010-09-30 CN CN2010205502853U patent/CN201824872U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296658A (en) * | 2011-05-30 | 2011-12-28 | 临颍县颍机机械制造有限公司 | Agricultural four-drive air-brake rear-steering weed-grasping machine with integral stand |
| CN102296658B (en) * | 2011-05-30 | 2013-07-24 | 临颍县颍机机械制造有限公司 | Agricultural four-drive air-brake rear-steering weed-grasping machine with integral stand |
| CN104553614A (en) * | 2015-01-05 | 2015-04-29 | 中国重汽集团福建海西汽车有限公司 | Car rear drive axle device and car |
| CN105172587A (en) * | 2015-09-24 | 2015-12-23 | 重庆大江工业有限责任公司 | Rear drive axle of Z type passenger car with rear engine |
| CN106151316A (en) * | 2016-08-17 | 2016-11-23 | 中国重汽集团济南动力有限公司 | The disk brake assembly that air chamber is positioned radially |
| CN106151316B (en) * | 2016-08-17 | 2018-04-06 | 中国重汽集团济南动力有限公司 | The disk brake assembly that air chamber is positioned radially |
| CN108407609A (en) * | 2018-05-14 | 2018-08-17 | 安徽安凯汽车股份有限公司 | A kind of independent suspension electric drive front steering axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |
|
| CX01 | Expiry of patent term |