CN2521079Y - Four-wheel differential transfer case droven by single differential mechanism - Google Patents

Abstract

The utility model belongs to an improvement of a driving device of a wheeled automobile, in particular to a dividing cynical device with four-wheel difference of a single differential drive. A gear installed on an output shaft of a speed-changing box is engaged with a main gear rim on a differential gear, and spline-housings installed on a right and a left half-shaft gears of the differential gear are respectively engaged with the left and the right half-shaft gears via moving shaft. Gears installed on the two spline-housings are respectively engaged with gears on an output shaft of a left and a right rear-shafts, the other side of a toothed set which is engaged by the spline-housings on the gear-shaft of the left and the right half-shaft is respectively toothed with the opposite spline-housings, gears which are installed at an end of the gear-shaft of the left and the right half-shaft are respectively engaged with gears on the opposite output shafts of a left and a right front shafts. The utility model has the advantages of simple structure, convenient manipulation, small appearance size, and low costs. When the tires slip, the power still remains in the others tires which do not slip without affecting the steering property of the car simultaneously.

Description

The four-wheel differentia transfer device that single diff drives

Technical field: the utility model belongs to the improvement of wheeled motor vehicle actuating device, the four-wheel differentia transfer device that particularly single diff drives.

Background technology: present most of power actuated vehicle all is equipped with diff in order to improve crossing ability on forward and backward bridge, and vehicle ' wheel on abominable road surface such as mire, ice and snow that diff is housed is easy to skid, and can't cruising.For addressing this is that, generally adopt diff lock to limit differential, until diff is locked, the both sides jack shaft is become one.But in this case, diff is in a single day locked, and vehicle just loses and turns to function, can only straight-line travelling.The device of this restriction differential, complex structure, oad is big, and the ground Clearance of vehicle chassis is reduced.Its productive costs height, difficult in maintenance, and also when tyre skidding of the drive axle that is unkitted differential locking-device, two wheels that differential locking-device is housed lose adhesive ability, in case this thing happens, vehicle just can not cruising.

Summary of the invention: the purpose of this utility model is to provide a kind of four-wheel differentia transfer device of single diff driving, and not only simple in structure, oad is little, cost is low, and when tyre skidding, the power of other non-slip wheels still exists, and the turning to property of vehicle is unaffected simultaneously.

The purpose of this utility model is achieved in that the four-wheel differentia transfer device that a kind of single diff drives, comprise change speed gear box and diff, the gear of installing on the output shaft of gear-box is meshed with bull gear on the diff, left side at diff, the spline housing of installing on the right axle shaft gear wheel shaft respectively with a left side, right axle shaft gear wheel shaft running-fit, the gear of installing on two spline housings respectively with a left side, gear on the right back axle output shaft is meshed, with a left side, the opposite side of the shift sleeve that the castellated shaft on the right axle shaft gear wheel shaft is meshed is meshed with corresponding spline housing respectively, a left side, the gear that install right axle shaft gear wheel shaft end respectively with a corresponding left side, gear on the front right axle output shaft is meshed.

The utility model of installing on self-propelled vehicle is work like this: by the power of change speed gear box output, directly import in the diff through the gear on the output shaft of gear-box and the bull gear of diff, power is exported to two ends respectively by the left and right half gear wheel shaft of diff.The right axle shaft gear of diff drives the right axle shaft gear wheel shaft by spline and rotates, and stirs shift sleeve when shift fork and slides to the right when throwing off with spline housing, and the power of right axle shaft gear wheel shaft will all be passed on the off hind wheel output shaft by the gear of its end installation; The differential left axle side gear drives the left half axle gear axle by spline and rotates, stirring shift sleeve when shift fork slides left when throwing off with spline housing, the gear that the power of left half axle gear axle will all be installed by its end is passed on the left rear wheel output shaft, at this moment, shows as back-wheel drive.When shift fork is stirred a shift sleeve and is meshed with spline housing, then be on the corresponding side gear shaft power some pass to corresponding front wheel output shaft by the gear on the spline housing, show as three wheel drive this moment; Stir two shift sleeves respectively when shift fork and mesh with corresponding spline housing simultaneously, then show as four wheel drive this moment.Drive because the homonymy axle drive shaft is the same side gear shaft by diff, so the homonymy wheel link, make with speed and turn round, but the vehicle wheel rotational speed of both sides can be inequality, therefore, the turning efficiency of vehicle can't be affected.

When power actuated vehicle of the present utility model being housed travelling on abominable road surface, if one of them tyre skidding and lose adhesive ability, the power of other three wheels still exists, and is enough to powered vehicle and advances.If two tyre skiddings are arranged, get deeply stuck in and lose adhesive ability, situation in three is arranged; A kind of is two front-wheels or two rear wheels slip, because structures shape of the present utility model homonymy wheel interlock, so two wheels that skid can not fly to change on the one hand, can not reduce the horsepower output of driving engine, on the other hand, the power of slip wheel can correspondingly not increase to some extent, can make normal vehicle operation; Second kind of situation is two tyre skiddings of homonymy, because these four wheels do not allow the velocity contrast of both sides wheel excessive by a differential controls, so the slip wheel of these two homonymies can not fly to change, opposite side not slip wheel will absorb the horsepower output of driving engine fully, and vehicle is advanced.The third is the situation of two tyre skiddings on the diagonal line, because the homonymy wheel links, two other is the therefore corresponding increase of power of slip wheel not, can order about vehicle and advance.

The utility model is relatively simple for structure, and gear ratio is less, and mostly is cone gear, and the oad of auxiliary gear box is reduced, and the ground Clearance increases.Cost is low, and is easy to operate, can be widely used on the vehicle of various four wheel drives, and its variable at random drive form has improved the carrying capacity of vehicle greatly.

Description of drawings: accompanying drawing is a sectional structure scheme drawing of the present utility model.

The specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing, the four-wheel differentia transfer device that a kind of single diff drives, comprise change speed gear box and diff, the gear of installing on change speed gear box 1 output shaft 2 is meshed with bull gear 12 on the diff 11, left side at diff 11, right axle shaft gear wheel shaft 13, the spline housing of installing on 5 15,9 respectively with a left side, right axle shaft gear wheel shaft 13,5 running-fits, two spline housings 15, the gear of installing by male splines on 9 14,10 respectively with a left side, gear 20,3 on the right back axle output shaft is meshed, gear 14,20,10,3 is cone gear.With the castellated shaft 16 on the left and right half gear wheel shaft, the opposite side of 8 shift sleeves that are meshed 17,7 is meshed with corresponding spline housing 15,9 respectively, left and right sides side gear shaft 13, the gear 19,4 that install 5 ends respectively with corresponding left and right sides front axle output shaft on gear 18,6 be meshed, gear 19,18,4,6 is cylindrical wheel.Shift fork is being controlled the engagement and the disengaging of shift sleeve 17,7 and spline housing 15,9 respectively, to realize drive forms such as two back-wheel drives, three wheel drive, four wheel drive.

Claims (3)

1. four-wheel differentia transfer device that single diff drives, comprise change speed gear box and diff, it is characterized in that: the gear of installing on change speed gear box (1) output shaft (2) is meshed with bull gear (12) on the diff (11), left side in diff (11), right axle shaft gear wheel shaft (13,5) go up the spline housing of installing (15,9) respectively with a left side, right axle shaft gear wheel shaft (13,5) running-fit, two spline housings (15,9) go up the gear of installing (14,10) respectively with a left side, gear (20 on the right back axle output shaft, 3) be meshed, with a left side, the shift sleeve (17 that castellated shaft on the right axle shaft gear wheel shaft (16,8) is meshed, 7) opposite side respectively with corresponding spline housing (15,9) be meshed the gear (19 that install left and right sides side gear shaft (13,5) end, 4) respectively with a corresponding left side, gear on the front right axle output shaft (18,6) is meshed.

2. the four-wheel differentia transfer device that single diff according to claim 1 drives, it is characterized in that: gear (14,20,10,3) is a cone gear.

3. the four-wheel differentia transfer device that single diff according to claim 1 drives, it is characterized in that: gear (19,18,4,6) is a cylindrical wheel.

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