CN2673708Y - Front mounted tetra driving type differential driving device - Google Patents

Abstract

The utility model discloses a front mounted tetra-driving type differential driving device, which is composed of a differential device and a power dispenser. The differential gear comprises a differential gear shell, a planet gear shaft and a planet gear which are installed on a small shaft hole in the shell, a left half shaft gear and a right half shaft gear which are meshed with the planet gear, etc. The right half shaft gear transmits power to the rear-wheel of one side of the vehicle and the front-wheel of the other side of the vehicle through a power output gear and a driving device. The left half shaft gear transmits power to the rear-wheel of the other side of the vehicle and the front-wheel of one side of the vehicle through another power output gear and another driving device. The rear mounted tetra-driving type differential driving device can implement the driving form of linking the vehicle wheels of the opposite angles and increase tractive force and through capacity. By adopting one differential device, the rear mounted tetra-driving type differential driving device has the advantages of simple structure, reliable performance, etc.

Description

A front four-wheel drive differential transmission device

technical field

The utility model relates to a vehicle power transmission device, in particular to a four-wheel drive differential transmission device

Background technique

Most of the existing four-wheel drive vehicles use two differentials to improve the passing performance of the vehicle under complex road conditions such as ice, snow, mud, and swamps. This method, on the one hand, increases the overall size of the transmission mechanism and reduces the ground clearance; on the other hand, one wheel slips and the other wheel loses driving force. If one of the front and rear drive wheels slips, the vehicle cannot Drive normally.

Contents of the invention

The purpose of this utility model is to provide a driving method that adopts a differential gear to realize the diagonal linkage of the four wheels of the vehicle, and it is a front wheel with simple structure, reliable performance, high engine power utilization rate and strong vehicle passing capacity. Four-wheel drive differential transmission.

A front four-wheel drive differential transmission device described in the utility model includes a differential, a power distributor and a box body; it is characterized in that: the differential includes: a differential housing 2, a left half shaft Gear 4, planetary gear 5, right side shaft gear 6, planetary gear shaft 20; the power distributor includes: power input shaft 1, transmission shaft 3, power output gears 7, 12, gears 10, 11, 9, 13, Drive shaft 8,19,17,15, overrunning clutch 14,22, flange disc 16,18. Among them, the differential housing 2 is provided with a front shaft hole and a terminal shaft hole, and two to four small shaft holes are arranged perpendicular to the axes of the two shaft holes, and the power input shaft 1 is fixedly connected with the front shaft hole of the differential housing 2 , the two ends of the differential case 2 are supported on the box body 21 by two bearings, the planetary gear shaft 20 is fixed on the small shaft hole of the differential case 2, and two to four planetary gear shafts are installed on the planetary gear shaft 20 Gear 5, the planetary gear 5 meshes with the left and right side gears 4 and 6; the left and right side gears 4 and 6 are conical, with a short shaft on the back, and the outer surface of the short shaft is in contact with the front of the differential case , the terminal shaft hole is slidingly connected; the inner end of the transmission shaft 3 is fixedly connected with the inner hole of the left side gear 4, and the inner end is supported on the right side gear 6 or the left side gear or the differential case 2, and wears Through the right side shaft gear 6, its outer end is supported on the box body 21 by bearings; the outer end of the transmission shaft 3 is fixedly connected with the power output gear 12, and the power output gear 12 is in constant mesh with the gears 10 and 11 at the same time, and the gear 10 is fixedly connected to the drive shaft 8 of the rear wheel on one side of the vehicle, the drive shaft 8 is supported on the box body 21 by two bearings, the drive shaft 19 is supported on the box body 21 by two bearings, and its front end is fixedly connected to a flange plate 18. The right side shaft gear 6 is fixedly connected with the power output gear 7, and the power output gear 7 is in constant mesh with the gears 9 and 13 at the same time, and the gear 9 is fixedly connected with the drive shaft 17 of the rear wheel on the other side of the vehicle. The drive shaft 17 The drive shaft 15 is supported on the box body 21 by two bearings, and its front end is fixedly connected with a flange plate 16 .

An overrunning clutch 14 is installed between the gear 13 and the drive shaft 15 of the front wheel on one side of the vehicle; an overrunning clutch 22 is installed between the gear 11 and the drive shaft 19 of the front wheel on the other side of the vehicle.

The fixed connection mentioned above is one of connection methods such as key, gear, pin, profile or expansion.

Compared with the traditional differential transmission device, the utility model has the following advantages and positive effects:

1. A differential gear is used to drive the four wheels of the vehicle, with simple structure and reliable performance.

2. Overrunning clutches are installed on the two front wheel drive shafts to avoid the generation of parasitic power, the vehicle can run at high speed, and the efficiency is improved.

3. Realized the linkage of diagonal wheels, avoiding the disadvantages of two front wheels or two rear wheels and two wheels on the same side slipping, and the vehicle cannot drive, while the probability of slipping on diagonal wheels is relatively small, basically realizing The four-wheel drive is independent, and there is still a speed difference between the wheels on both sides, which can not only achieve differential speed but also prevent slipping, without affecting the turning of the vehicle, and improve traction and passing capacity.

According to the structural analysis of this device, the vehicle equipped with this device is driving under complex road conditions: when one wheel slips, the power of the other three wheels still exists, and the vehicle can be driven forward. When two wheels lose adhesion, it will not affect the power of the other two wheels, and the car can also be driven forward. Another feature is that the slipping wheels will not fly because of the effect of this differential.

Description of drawings

Fig. 1 is a sectional view of a front four-wheel drive differential transmission device described in the present invention.

Fig. 2 is a left side view of a front four-wheel drive differential transmission device described in the utility model.

Detailed ways

The specific structure of the utility model can be seen in Figures 1 and 2: the device is composed of a differential, two sets of power distributors and a box. The differential includes: a differential housing 2, a left side shaft gear 4, Planetary gear 5, right side shaft gear 6, planetary gear shaft 20; the power distributor includes: power input shaft 1, transmission shaft 3, power output gear 7, 12, gears 10, 11, 9, 13, drive shaft 8 , 19,17,15, overrunning clutch 14,22, flange plate 16,18. The power input shaft 1 of the differential is connected with the differential case 2 through the spline at its shaft end. The differential case 2 is supported on two bearings, the left side gear 4 is connected with the power output gear of one side wheel through the transmission shaft 3 with splines, and the transmission shaft 3 is supported on the right side gear 6 and the box body 21 Above, the left end of the transmission shaft 3 can also be supported on the left side gear 4 or the differential case 2 by a bearing. The outer side of the transmission shaft 3 is fixedly connected with the power output gear 12 . The gear 10 meshed with the power output gear 12 is fixedly connected with the drive shaft 8 of the rear wheel on one side of the vehicle (of), the drive shaft 8 is supported on the casing 21 by two bearings, and the other gear meshed with the power output gear 12 11 is then connected with the drive shaft 19 of the other side front wheel of vehicle by overrunning clutch 22, and this drive shaft 19 is supported on the casing 21 by two bearings equally, and its front end is fixedly connected a flange plate 18. The right side shaft gear 6 is fixedly connected with the power output gear 7 . The gear 9 meshed with the power output gear 7 is fixedly connected to the drive shaft 17 of the rear wheel on the other side of the vehicle, and the other gear 13 meshed with the power output gear 7 is connected to the drive shaft 15 of the front wheel on one side of the vehicle through an overrunning clutch 14 The drive shafts 15 and 17 are respectively supported on the box body 21 by two bearings, and the front end of the drive shaft 15 is fixedly connected to a flange plate 16 . The transmission device is an existing technology, and there are many ways to realize it.

The purpose of this device is achieved in this way: the power input shaft 1 transmits power to the differential case 2, the differential case 2 drives the planetary gear shaft 20 to rotate, and the planetary gear 5 follows the differential case 2 and the planetary gear Axle 20 rotates, and drives left and right side shaft gears 4,6 to rotate. The left side shaft gear 4 transmits power to the power output gear 12 through the transmission shaft 3, and the power output gear 12 drives the gear 10 and the gear 11 at the same time, and the gear 10 transmits the power to the drive shaft 8, and then transmits the power to the vehicle through the corresponding transmission device. One side of the rear wheel to make it turn. The gear 11 transmits the power to the drive shaft 19, the flange plate 18 and the corresponding transmission device through the overrunning clutch 22, and transmits the power to the front wheel on the other side of the vehicle. The right side shaft gear 6 transmits power to the power output gear 7, and the power output gear 7 drives the gear 9 and the gear 13 simultaneously. The gear 9 transmits the power to the rear wheel on the other side of the vehicle through the drive shaft 17 and the corresponding transmission device, and the gear 13 transmits the power to the drive shaft 15, the flange plate 16 and the corresponding transmission device through the overrunning clutch 14. Pass to the front wheel on one side of the vehicle to make it turn.

The fixed connection mentioned above is one of connection methods such as key, gear, pin, profile or expansion.

Claims (3)

1. a preposition 4 wheel driven formula differential driver comprises diff and power distribution device and casing; It is characterized in that: described diff comprises: differential casing (2), left half axle gear (4), planetary wheel (5), right axle shaft gear (6), compensating-gear shaft (20); Described power distribution device comprises: power input shaft (1), transmission shaft (3), power output gear (7), (12), gear (10), (11), (9), (13), axle drive shaft (8), (19), (17), (15), overriding clutch (14), (22), flange (16), (18).Wherein differential casing (2) is provided with front end axis hole and terminal axis hole, be provided with two to four little axis holes perpendicular to the diaxon axially bored line, power input shaft (1) is captiveed joint with the front end axis hole of differential casing (2), differential casing (2) two ends are bearing on the casing (21) by two bearings, compensating-gear shaft (20) is fixed on the little axis hole of differential casing (2), compensating-gear shaft (20) is gone up two to four planetary wheels (5) is installed, this planetary wheel (5) and left and right half gear (4), (6) engagement; Left and right half gear (4), (6) are taper, and the back side is provided with minor axis, preceding, the terminal axis hole sliding block joint of minor axis outside face and differential casing; Described transmission shaft (3) is inner captives joint with left half axle gear (4) endoporus, and the inner is bearing on right axle shaft gear (6) or left half axle gear (4) or the differential casing (2), passes right axle shaft gear (6), and its outer end is bearing on the casing (21) by bearing; Captive joint with power output gear (12) in described transmission shaft (3) outer end, power output gear (12) while and gear (10), (11) constant-mesh, described gear (10) is captiveed joint with the axle drive shaft (8) of vehicle one rear flank wheel, axle drive shaft (8) is bearing on the casing (21) by two bearings, this axle drive shaft (19) is bearing on the casing (21) by two bearings, its front end captive joint one flange (18); Described right axle shaft gear (6) is captiveed joint with power output gear (7), power output gear (7) while and gear (9), (13) constant-mesh, gear (9) is captiveed joint with vehicle opposite side back-wheel drive axle (17), this axle drive shaft 17 is bearing on the casing (21) by two bearings, this axle drive shaft (15) is bearing on the casing (21) by two bearings, its front end captive joint one flange (16).

2. according to the described a kind of preposition 4 wheel driven formula differential driver of claim 1, it is characterized in that: between the axle drive shaft (15) of gear (13) and vehicle one side front-wheel overriding clutch (14) is installed; Between the axle drive shaft (19) of gear (11) and vehicle opposite side front-wheel overriding clutch (22) is installed.

3. according to the described a kind of preposition 4 wheel driven formula differential driver of claim 1, it is characterized in that: above-described one of the connection modes such as key, gear, pin, profile or swelling that are fixedly connected as.

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