CN202080131U

CN202080131U - Full-time eight-wheeled driving vehicle differential transmission system

Info

Publication number: CN202080131U
Application number: CN2011201844150U
Authority: CN
Inventors: 黄贤荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-02
Filing date: 2011-06-02
Publication date: 2011-12-21
Anticipated expiration: 2021-06-02

Abstract

The utility model provides a full-time eight-wheeled driving vehicle differential transmission system. The system comprises an existing one-input and two-output transfer case assembly and two one-input and four-output differential transfer case assemblies manufactured by a full-time four-wheeled driving differential transmission device disclosed by the authorization notice number of CN2911332Y; a vehicle transmission gear is in transmission connection with the one-input and two-output transfer case assembly; two output ends of the one-input and two-output transfer case assembly are respectively connected with the one-input and four-output transfer case assembly between a first axle and a second axle, and the one-input and four-output transfer case assembly between a third axle and a fourth axle; the one-input and four-output transfer case assembly between the first axle and the second axle drives four wheels of the first axle and the second axle; and the one-input and four-output transfer case assembly between the first axle and the second axle drives four wheels of the third axle and the fourth axle. The full-time eight-wheeled driving vehicle differential transmission system has a purely mechanical structure, and can lead an eight-wheeled driving vehicle to be kept under a full-time all-wheel driving state all the time at any speed.

Description

Full-time eight wd vehicle differential transmission systems

Technical field

The utility model relates to full-time all-wheel drive vehicles differential transmission systems.

Background technology

Open differential is made up of parts such as planetary wheel, planetary wheel carrier (differential gear box), axle side gears.The power of driving engine enters diff through transmission shaft, and the direct drive planetary wheel carrier drives left and right two-semiaxle gear by satellite gear again, drives left and right wheel respectively.The designing requirement of diff is satisfied: (left half axle rotating speed)+(right axle shaft rotating speed)=2(planetary wheel carrier rotating speed).When automobile was kept straight on, left and right wheel equated to be in state of equilibrium with planetary wheel carrier three's rotating speed, and three's state of equilibrium is destroyed when automobile turning, causes the nearside wheel rotating speed to reduce, and the off-side wheel rotating speed increases.

The diff principle number is the utility model patent of CN 2587482 referring to Granted publication, its name is called a kind of model car diff, comprise can be involutory housing and cap, lid housing and cap are respectively equipped with a pivot that is connected wheel body, and each pivot pin end is provided with helical wheel, and the interior gear cluster of this helical wheel and housing meshes, this gear cluster is made of a positioning seat and several finishing bevel gear cuters, model car is when turning, and two pivots are nibbled transmission mutually via helical wheel and finishing bevel gear cuter, obtain good speed difference adjustment.This diff model has reflected existing differential design profile generally.

The drive system of present eight wd vehicles is divided into two big classes substantially: timesharing drives and full-time all-wheel drive.

1, the timesharing drive configuration is that the transmission shaft of first bridge, second bridge is disconnected by engaging gear, by third axle, the 4th bridge as axle drive shaft, the wheel that has only third axle, the 4th bridge is a drive wheel, is follower and the wheel of first bridge, second bridge does not participate in the driving of vehicle.By abominable road conditions be, need operate switching mechanism by manual control and connect first and second axle, make vehicle become the all-wheel drive form, at this moment exist not differential of between centers, the braking in a turn phenomenon is arranged, very big circulating of power is arranged in power drive system, will directly or indirectly cause the damage of transmission device, bring potential safety hazard to cause damage for occupant and vehicle.

2, full-time drive configuration promptly is delivered to engine's motive power the drive system on each wheel constantly.Existing this kind structure is carried out by the electronic induction servomechanism usually and is divided up-to-date style to change to full-time formula, thereby form full-time drive pattern, this structure is when the speed of a motor vehicle of vehicle is lower than a certain constant speed and spends, it is full-time pattern by the timesharing mode converting, be actually a kind of locking state, existing not differential equipower circulating phenomenon of between centers, is disadvantageous to fuel-economizing and safety; When the speed of a motor vehicle of vehicle was higher than the speed of setting, it just was converted into the timesharing drive pattern by the electronic induction servomechanism.

Summary of the invention

The timesharing that the purpose of this utility model has been to solve eight wd vehicles drives that existing operating difficulties, carrying capacity are low, low, the defectives such as oil consumption is high, bad adaptability of speed during all-wheel drive, be to reduce the conversion operations link between timesharing driving and the all-wheel drive, reduced the unreliable factor of electric control operation, and to change electron steering all-wheel drive structure be the full-time all-wheel drive structure of Purely mechanical, simplify full-time all-wheel drive, brought into play the reliability and the safety of pure machinery.

For this reason, the technical solution of the utility model is: full-time eight wd vehicle differential transmission systems, comprise an existing input two output transfer case assemblies, two Granted publications number be that the differential transfer case assemblies are exported in the input four that the disclosed AWD differential driver of CN 2911332Y is made; It is characterized in that: the change speed gear box of vehicle is connected with an input two output transfer case assemblies, and power is input to an input two output transfer case assemblies; Two axle side gears of one input, two output transfer case assemblies are fixed on two semiaxis, two semiaxis respectively by driving-shaft assembly and be installed in first bridge and second bridge between the differential transfer case assembly input end and be installed in third axle and the 4th bridge between the input end of differential transfer case assembly be in transmission connection;

Be arranged in the input of one between first bridge and second bridge four output differential transfer case assemblies, two groups of four axle side gears that have public rotating speed diff are separately fixed on four semiaxis; Two semiaxis of one group of diff are connected with the power intake of the right side wheel of the revolver of first bridge and second bridge respectively by driving-shaft assembly, and two semiaxis of another group diff are taken turns with the right side of first bridge respectively and the power intake of the revolver of second bridge is connected;

Be arranged in the input of one between third axle and the 4th bridge four output differential transfer case assemblies, two groups of four axle side gears that have public rotating speed diff are separately fixed on four semiaxis; Two semiaxis of one group of diff are connected with the power intake of the right side wheel of the revolver of third axle and the 4th bridge respectively by driving-shaft assembly, and two semiaxis of another group diff are taken turns with the right side of third axle respectively and the power intake of the revolver of the 4th bridge is connected.

Beneficial effect: the utility model need not artificial or electronics switches, and is pure physical construction, thus the personal safety problem that can avoid artificial incorrect operation or electronic failure to cause.The utility model is compared tradition branch up-to-date style drive system and is compared with full-time formula drive system, it can allow vehicle can both remain full-time all-wheel drive state under any speed, the quality that makes full use of vehicle self makes it to become tractive force, reached the reduction oil consumption like this, possessed cross-country traveling ability, reduce maloperation, improved the reliability of car load.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of an input four output differential transfer case assemblies.

Fig. 3 is the structural representation of an input two output transfer case assemblies.

The specific embodiment

As shown in Figure 1, after the engine power process change speed gear box speed change, be input to an input two output transfer case assembly I, drive pinion carrier H1, drive a, b two-semiaxle gear, thereupon through dividing two-way to export torque behind the differential by gear pair CF1; Output to one the tunnel by transmission shaft C1 and to be installed in one between first, second bridge input, the four output differential transfer case assembly II, another road outputs to by transmission shaft C2 and is installed in the input of one between the 3rd, the 4th bridge four output differential transfer case assembly II.

Be input to and be installed in the torque in an input four output differential transfer case assembly II between first, second bridge, drive pinion carrier H2, drive axle side gear 1, axle side gear 2, axle side gear 3, axle side gear 4 thereupon by gear pair CF2; Wherein, axle side gear 1 and axle side gear 2 mutual differentials, axle side gear 3 and axle side gear 4 mutual differentials, in this two covers diff, common planet carrier H2; At this moment, the torque of axle side gear 1 is transferred to the revolver of second bridge by transmission components such as gear pair CF3, transmission shaft C4, tapered gear pair A3, constant velocity driving shaft D3; The torque of axle side gear 2 is transferred to the right side wheel of first bridge by transmission components such as gear pair CF4, transmission shaft C3, tapered gear pair A2, constant velocity driving shaft D2.The torque of axle side gear 3 is transferred to the revolver of first bridge by transmission components such as transmission shaft C5, tapered gear pair A1, constant velocity driving shaft D1; The torque of axle side gear 4 is transferred to the right side wheel of second bridge by transmission components such as transmission shaft C6, tapered gear pair A4, constant velocity driving shaft D4.

Be input to the torque that is installed in the input of one between the 3rd, the 4th bridge four output differential transfer case assembly II, drive pinion carrier H2, drive axle side gear 5, axle side gear 6, axle side gear 7, axle side gear 8 thereupon by gear pair CF2; Wherein, axle side gear 5 and axle side gear 6 mutual differentials, axle side gear 7 and axle side gear 8 mutual differentials, in this two covers diff, common planet carrier H2; At this moment, the torque of axle side gear 5 is transferred to the revolver of third axle by transmission components such as transmission shaft C10, tapered gear pair A5, constant velocity driving shaft D5; The torque of axle side gear 6 is transferred to the right side wheel of the 4th bridge by transmission components such as transmission shaft C9, tapered gear pair A7, constant velocity driving shaft D7.The torque of axle side gear 7 is transferred to the revolver of the 4th bridge by transmission components such as gear pair CF4, transmission shaft C8, tapered gear pair A8, constant velocity driving shaft D8; The torque of axle side gear 8 is transferred to the right side wheel of third axle by transmission components such as gear pair CF3, transmission shaft C7, tapered gear pair A6, constant velocity driving shaft D6.

In above driving system, gear pair CF3 equates that with the speed ratio of gear pair CF4 the speed ratio of tapered gear pair A1, A2, A3, A4, A5, A6, A7, A8 equates.

The structure of one input, four output differential transfer case assembly II is seen Fig. 2, n3, and n4, n5, n6 are four mouth rotating speeds, 1,2,3,4 is axle side gear; 2n1=n3+n4=n5+n6; Gear pair CF3 equates with the CF4 speed ratio.

The structure of one input, two output transfer case assembly I is seen Fig. 3, and n1, n2 are two mouth rotating speeds, and a, b are axle side gear; 2n=n1+n2.

Claims

1. full-time eight wd vehicle differential transmission systems comprise an existing input two output transfer case assemblies, and two Granted publications number be that the differential transfer case assemblies are exported in the input four that the disclosed AWD differential driver of CN 2911332Y is made; It is characterized in that: the change speed gear box of vehicle is connected with an input two output transfer case assemblies, and power is input to an input two output transfer case assemblies; Two axle side gears of one input, two output transfer case assemblies are fixed on two semiaxis, two semiaxis respectively by driving-shaft assembly and be installed in first bridge and second bridge between the differential transfer case assembly input end and be installed in third axle and the 4th bridge between the input end of differential transfer case assembly be in transmission connection;