CN205059265U - Rear drive axle of Z type passenger train of engine postposition - Google Patents
Rear drive axle of Z type passenger train of engine postposition Download PDFInfo
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- CN205059265U CN205059265U CN201520745479.1U CN201520745479U CN205059265U CN 205059265 U CN205059265 U CN 205059265U CN 201520745479 U CN201520745479 U CN 201520745479U CN 205059265 U CN205059265 U CN 205059265U
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- type passenger
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Abstract
The utility model relates to a rear drive axle of Z type passenger train of engine postposition, including rear -axle housing, main reducer assembly, left half axle and right semi -axis, back wheel hub assembly, main reducer assembly is including supporting shell, between the wheel differential mechanism, driven gear, still include with bearing frame that the cooperation of supporting shell lower part is connected, upper portion through one set of cylindrical roller bearing with supporting shell cooperation connect the middle part through two sets of tapered roller bearing with driving tooth shaft that bearing frame cooperation is connected, coordinate the input driving flange of being connected with driving tooth shaft lower part, the bearing frame passes through threaded fastener of second group and supporting shell fixed connection, the driving gear of the epaxial end of driving gear with the driven gear meshing, contained angle alpha between the axial lead of driving tooth shaft and the axial lead of rear -axle housing is 30 - 40. The utility model discloses it is little with the automobile body inner space to stand, and the wheel base is shorter, and output torque is big, bearing capacity is high, have sufficient dynamic property, has good travelling comfort again.
Description
Technical field
The utility model relates to automobile component, is specifically related to a kind of rear driving axle of rear-engined Z-type (medium-sized) passenger vehicle.
Background technology
At present, the back-wheel drive bridge that bus engine is rearmounted, what the driving gear in its main deceleration and driven gear adopted is all positive interlace skew bevel wheel drive mechanism.This drive mechanism its not foot point be that interior of body space, station is large, in car, floor is uneven, and wheelbase is longer.A kind of medium bus rear drive axle assembly disclosed in CN201646377U.It comprises main reduction gear, inter-wheel differential, rear axle housing assembly, wheel hub, brake wheel, brake assembly and semiaxis.Main reduction gear and inter-wheel differential are arranged in final drive casing and rear axle housing assembly respectively; Wheel hub is arranged on rear axle housing assembly by the inside and outside bearing of wheel hub, and main reduction gear, inter-wheel differential, semiaxis, wheel hub, brake wheel are connected successively, and brake assembly is arranged on rear axle housing assembly; Main reduction gear adopts the single-stage speed reducing structure of finishing bevel gear cuter engagement, and base ratio contains 4.625-6.666, and apply engine power range is large; Noise is low, rear driving axle assembly noise≤68 decibel, can meet the noise requirements of domestic existing high-end 7 meters of medium buss completely.Along with the development of heavy motor vehicle technology, also more and more higher to the performance requriements of passenger vehicle, require that the passenger vehicle designed should ensure that it has enough dynamic property, ensure that it has good traveling comfort again.Therefore, also need to develop the better rear driving axle of performance.
Summary of the invention
The purpose of this utility model is to provide a kind of rear driving axle of rear-engined Z-type passenger vehicle, and its interior of body space, station is little, and wheelbase is shorter, and output torque is large, load-carrying capacity is high, have enough dynamic property, has again good traveling comfort.
The rear driving axle of a kind of rear-engined Z-type passenger vehicle described in the utility model, comprise rear-axle casing, be located at the main gearbox assembly in the middle part of rear-axle casing, the left half axle be connected with main reduction gear and right axle shaft, respectively with the axle tube of left half axle and right axle shaft one end fits, be engaged in the rear-wheel hub assembly be connected on axle tube and with described rear-axle casing end, described main gearbox assembly comprises supporting shell, the inter-wheel differential be connected with supporting shell top, the driven gear on described inter-wheel differential is fixedly connected on by first group of threaded fasteners, also comprise the bearing seat be connected with described supporting shell bottom, top overlaps by two the driving gear shaft that tapered roller bearing and described bearing seat be connected by a set of cylindrical roller bearing and the described supporting shell middle part that is connected, the input driving flange be connected with driving gear shaft bottom, described bearing seat is fixedly connected with supporting shell by second group of threaded fasteners, the driving gear of described driving gear shaft upper end engages with described driven gear, it is characterized in that: the angle α between the axial line of described driving gear shaft and the axial line of rear-axle casing is 30 °-40 °.Namely the wrong skew bevel wheel drive mechanism of oblique is adopted.
The rear driving axle of described rear-engined Z-type passenger vehicle, is characterized in that: described main gearbox assembly is single-stage speed reducing mechanism, and speed ratio is 4.455.
Further, described input driving flange is connected by the bottom of spline and described driving gear shaft, and fixes with flange jam nut.
Further, described rear-wheel hub assembly by rear-wheel hub, to be located in rear-wheel hub and the bearing directly coordinated with axle tube and oil sealing form, described rear-wheel hub is connected by the 3rd threaded fasteners and left half axle, described left half axle is connected by spline and axle side gear, to realize the transmission of moment of torsion.
Further, Hub assembly is provided with rear brake in the rear, this rear brake comprises brake disc and brake clamp, and described brake disc is connected with described rear-wheel hub by the 4th group of threaded fasteners, and described brake clamp is connected with the adapter plate on described axle tube by the 5th group of threaded fasteners.
Further, described brake disc is provided with ABS gear ring and abs sensor.To realize the anti-lock braked, improve the safety of driving.
Further, described left half axle and right axle shaft all adopt semi-floating drive mechanism.
Preferred scheme is: the angle α between the axial line of described driving gear shaft and the axial line of rear-axle casing is 35 °.
The utility model is owing to having carried out breakthrough conventional design to the layout being transmitted gear in the driving gear shaft in main reduction gear and inter-wheel differential, change traditional positive interlace (90 °) skew bevel wheel drive mechanism into oblique mistake (30 °-40 °) skew bevel wheel drive mechanism, so compact conformation, wheelbase are short, from heavy and light, shorten the distance of driving engine and vehicle bridge, reduce and take up room, dependable performance, manoevreability is better, improves traveling comfort, and actv. meets passenger vehicle and uses; In addition, the noise of driving engine can also be reduced.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram that main reduction gear and inter-wheel differential are connected;
Fig. 3 is the schematic diagram that inter-wheel differential and drg are connected;
Fig. 4 is the structural representation of driving flange;
Fig. 5 is the A-A cutaway view of Fig. 4;
In figure: 1-rear-axle casing, 2-main gearbox assembly, 3-left half axle, 4-axle tube, 5-rear-wheel hub assembly, 6-driven gear, 7-first group of threaded fasteners, 8-inter-wheel differential, 9-driving gear shaft, 10-bearing seat, 11-second group of threaded fasteners, 12-inputs driving flange, 13-flange jam nut, 14-supporting shell, 15-rear-wheel hub, 16-bearing, 17-oil sealing, 18-the 3rd group of threaded fasteners, 19-the 4th group of threaded fasteners, 20-brake disc, 21-the 5th group of threaded fasteners, 22-adapter plate, 23-brake clamp, 24-right axle shaft, 25-ABS gear ring, 26-ABS sensor, 27-axle side gear.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
Embodiment one: see the rear driving axle of a kind of rear-engined Z-type passenger vehicle shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, comprise rear-axle casing 1, be located at the main gearbox assembly 2 in the middle part of rear-axle casing, the left half axle 3 be connected with main reduction gear and right axle shaft 24, respectively with the axle tube 4 of left half axle and right axle shaft one end fits, be engaged in the rear-wheel hub assembly 5 be connected on axle tube and with described rear-axle casing end; Described main gearbox assembly 2 comprises supporting shell 14, the inter-wheel differential 8 be connected with supporting shell top, is fixedly connected on the driven gear 6 on described inter-wheel differential by first group of threaded fasteners 7; Also comprise the bearing seat 10 be connected with described supporting shell bottom, the driving gear shaft 9 that tapered roller bearing and described bearing seat 10 be connected is overlapped by two, the input driving flange 12 be connected with driving gear shaft bottom by a set of cylindrical roller bearing and described supporting shell 14 middle part that is connected in top; Described bearing seat is fixedly connected with supporting shell 14 by second group of threaded fasteners 11, the driving gear of described driving gear shaft 9 upper end engages with described driven gear 6, it is characterized in that: the angle α between the axial line of described driving gear shaft 9 and the axial line of rear-axle casing 1 is 35 °.Namely the wrong skew bevel wheel drive mechanism of oblique is adopted.
The rear driving axle of described rear-engined Z-type passenger vehicle, described in it, main gearbox assembly 2 is single-stage speed reducing mechanism, and speed ratio is 4.455.
Described input driving flange 12 is connected by the bottom of spline and described driving gear shaft 9, and fixes with flange jam nut 13.
Described rear-wheel hub assembly 5 is by rear-wheel hub 15, to be located in rear-wheel hub and the bearing 16 directly coordinated with axle tube and oil sealing 17 form, described rear-wheel hub is connected with left half axle 3 by the 3rd threaded fasteners 18, and described left half axle is connected by spline and axle side gear 27 transmission (structure of right axle shaft and left half axle is identical) realizing moment of torsion.
Hub assembly 5 is provided with rear brake in the rear, this rear brake comprises brake disc 20 and brake clamp 23, described brake disc 20 is connected with described rear-wheel hub 15 by the 4th group of threaded fasteners 19, and described brake clamp 23 is connected with the adapter plate 22 on described axle tube 4 by the 5th group of threaded fasteners 21.
Described brake disc 20 is provided with ABS gear ring 25 and abs sensor 26, to realize the anti-lock braked, improves the safety of driving.
Described left half axle 3 and right axle shaft 24 all adopt semi-floating drive mechanism.
Described axle tube 4 is without male splines with the difference of traditional axle tube, because it does not need to connect planetary reduction gear.
Embodiment two: the angle α between the axial line of described driving gear shaft 9 and the axial line of rear-axle casing 1 is 30 °, and all the other are identical with embodiment one.
Embodiment three: the angle α between the axial line of described driving gear shaft 9 and the axial line of rear-axle casing 1 is 40 °, and all the other are identical with embodiment one.
According to actual needs, the angle α between the axial line of driving gear shaft 9 and the axial line of rear-axle casing 1 can select 31 °, 32 °, 33 °, 34 °, 36 °, 37 °, 38 ° or 39 °, forms other multiple embodiments.
Claims (8)
1. the rear driving axle of a rear-engined Z-type passenger vehicle, comprise rear-axle casing (1), be located at the main gearbox assembly (2) in the middle part of rear-axle casing, the left half axle (3) be connected with main reduction gear and right axle shaft (24), respectively with the axle tube (4) of left half axle and right axle shaft one end fits, be engaged in the rear-wheel hub assembly (5) be connected on axle tube and with described rear-axle casing end, described main gearbox assembly (2) comprises supporting shell (14), the inter-wheel differential be connected with supporting shell top (8), is fixedly connected on the driven gear (6) on described inter-wheel differential by first group of threaded fasteners (7), also comprise the bearing seat (10) be connected with described supporting shell bottom, overlap by two the driving gear shaft (9) that tapered roller bearing and described bearing seat (10) be connected in the middle part of top is connected by a set of cylindrical roller bearing and described supporting shell (14), the input driving flange (12) be connected with driving gear shaft bottom, described bearing seat is fixedly connected with supporting shell (14) by second group of threaded fasteners (11), the driving gear of described driving gear shaft (9) upper end engages with described driven gear (6), it is characterized in that: the angle α between the axial line of described driving gear shaft (9) and the axial line of rear-axle casing (1) is 30 °-40 °.
2. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1, is characterized in that: described main gearbox assembly (2) is single-stage speed reducing mechanism, and speed ratio is 4.455.
3. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1 and 2, is characterized in that: described input driving flange (12) is connected by the bottom of spline and described driving gear shaft (9), and fixes with flange jam nut (13).
4. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1 and 2, it is characterized in that: described rear-wheel hub assembly (5) by rear-wheel hub (15), to be located in rear-wheel hub and the bearing (16) directly coordinated with axle tube and oil sealing (17) form, described rear-wheel hub is connected by the 3rd threaded fasteners (18) and left half axle (3), described left half axle
Be connected by spline and axle side gear (27).
5. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1 and 2, it is characterized in that: Hub assembly (5) is provided with rear brake in the rear, this rear brake comprises brake disc (20) and brake clamp (23), described brake disc (20) is connected with described rear-wheel hub (15) by the 4th group of threaded fasteners (19), and described brake clamp (23) is connected with the adapter plate (22) on described axle tube (4) by the 5th group of threaded fasteners (21).
6. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 5, is characterized in that: described brake disc (20) is provided with ABS gear ring (25) and abs sensor (26).
7. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1 and 2, is characterized in that: described left half axle (3) and right axle shaft (24) all adopt semi-floating drive mechanism.
8. the rear driving axle of rear-engined Z-type passenger vehicle according to claim 1 and 2, is characterized in that: the angle α between the axial line of described driving gear shaft (9) and the axial line of rear-axle casing (1) is 35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745479.1U CN205059265U (en) | 2015-09-24 | 2015-09-24 | Rear drive axle of Z type passenger train of engine postposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745479.1U CN205059265U (en) | 2015-09-24 | 2015-09-24 | Rear drive axle of Z type passenger train of engine postposition |
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| Publication Number | Publication Date |
|---|---|
| CN205059265U true CN205059265U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745479.1U Active CN205059265U (en) | 2015-09-24 | 2015-09-24 | Rear drive axle of Z type passenger train of engine postposition |
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| CN (1) | CN205059265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-09-24 CN CN201520745479.1U patent/CN205059265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190516 Address after: 401321 Fenghua Road, Yudong, Banan District, Chongqing, 901 Patentee after: Chongqing Dajiang Cheqiao Co., Ltd. Address before: 401321 Dajiang Industrial Park, Yudong Town, Banan District, Chongqing Patentee before: Chongqing Dajiang Industrial Co., Ltd. |