CN201155549Y

CN201155549Y - Minicar front decelerator assembly

Info

Publication number: CN201155549Y
Application number: CNU2008200974776U
Authority: CN
Inventors: 张兴海; 彭自力
Original assignee: YUAN INNOVATION TECH Co Ltd
Current assignee: YUAN INNOVATION TECH Co Ltd
Priority date: 2008-01-15
Filing date: 2008-01-15
Publication date: 2008-11-26
Anticipated expiration: 2018-01-15

Abstract

The utility model relates to a miniature automobile front reducer assembly. The front and the back parts of a front axle casing internal casing are respectively equipped with a differential casing and a small bevel gear by bearings, wherein, the differential casing is sleeved with a big bevel gear, and the big bevel gear and the small bevel gear are meshed with each other. The back end of a small bevel gear shaft is sleeved with a flange. The inner ends of a left half axle and a right half axle are reversely put through the front axle casing and are extended into the differential casing. The end parts of the inner ends of the left half axle and the right half axle are respectively equipped with a half axle gear. Two axle gears are all meshed with two satellite gears which are arranged between two axle gears. The two satellite gears are installed at the same shaft. The miniature automobile front reducer assembly can ensure that when the miniature automobile passes the road with low adhesive attraction and particularly passes the muddy or frothing section, four wheels are sued for driving, thus the miniature automobile has enough ground driving force; the miniature automobile front reducer assembly can effectively prevent the tyres from bogging or skidding, greatly increases the grade ability of the miniature automobile, effectively improves the passing ability of the automobile and brings great convenience for people travelling.

Description

Front speed reducer assembly of micro-car

Technical field

The utility model relates to a kind of transmission device of minicar, relates in particular to front speed reducer assembly of micro-car.

Background technique

At present, the front-wheel of minicar generally is connected with vehicle frame by suspension fork mechanism, and front-wheel is a supporting roller, does not have driving force.When the power of motor was delivered to back axle by rear propeller shaft and drives the trailing wheel rotation, front-wheel rotated in the same way with trailing wheel, and car load travels forward or backward.Have only two trailing wheels that the minicar of driving force is arranged,, by the lower road surface of adhesion coefficient the time, can not provide enough big ground surface driving power though can reduce the wearing and tearing of tire and Parts for Power Train preferably during travels down in pavement behavior; During particularly by muddy or frost boiling highway section, driving wheel is absorbed in mire easily or can't drives because of skidding, thereby has influenced the passing ability of minicar, brings great inconvenience for people's trip.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of front speed reducer assembly of micro-car, so that combine with transfer case, makes minicar adopt four-wheel drive when needed.

The technical solution of the utility model is as follows: a kind of front speed reducer assembly of micro-car, the front end and back end of propons housing is uncovered, front end spiral-lock front axle housing cover at the propons housing, both pass through bolt, form the front reduction gear casing, the front and rear portions of described front axle housing intracoelomic cavity is installed differential casing and bevel pinion respectively by bearing, suit bevel gear wheel on the differential casing wherein, this bevel gear wheel is meshed with bevel pinion, the tail end of small coning gear shaft stretches out from the ear end face of front axle housing body, and the rear end of small coning gear shaft is set with flange plate; And arranged on left and right sides symmetric arrangement left and right half in described propons housing front portion, the inner of left and right half is oppositely passed the propons housing and is extend in the differential casing, Spielpassung between described left and right half and the differential casing, in the end of left and right half the inner a differential gear is installed respectively, the two-semiaxle gear all is meshed with two planetary pinions that are arranged between them, described two planetary pinions are installed on the same axle, and this two ends are stretched in the mounting hole corresponding on the differential casing.

Adopt above technological scheme, on the chassis of traditional minicar, set up transfer case, gear engagement on transfer case input gear and the output shaft of gear-box, output gear and synchronizer are installed on the output shaft of transfer case, the joint of synchronizer is controlled with separating by shifting fork mechanism, and the front end of transfer case output shaft is connected with flange plate in the utility model by front propeller shaft, and front-wheel is installed in the outer end of left and right half in the utility model.When synchronizer is in separated state, the power of motor passes to back axle by output shaft of gear-box and rear propeller shaft, the rotation of driving trailing wheel, transfer case output gear idle running this moment, the transfer case output shaft does not rotate, minicar adopts two rear wheel drives, is suitable for pavement behavior travels down preferably, to reduce the wearing and tearing of tire and Parts for Power Train; When synchronizer is in jointing state, the transfer case output gear drives the rotation of transfer case output shaft by synchronizer, the transfer case output shaft is given flange plate in the utility model by front propeller shaft with transmission of power, flange plate drives the bevel gear wheel rotation again by bevel pinion, and differential casing and planetary pinion rotate with bevel gear wheel.At this moment, power is through planetary pinion, the left and right half gear, and left and right half outputs to left and right front-wheel, and front-wheel has also had driving force like this.Minicar adopts two trailing wheels and two front-wheels to drive jointly, and tractive force is enough big, thereby has strengthened the grade ability of minicar greatly, has effectively improved the passing ability of automobile.

When minicar adopts four-wheel drive to travel on straight line, the rotating speed unanimity of two differential gears on the left and right half, the two-semiaxle gear is relative with planetary pinion static; Work as Ackermann steer angle, planetary pinion begins rotation, and the rotation of two differential gears produces differential, and guarantees that two-semiaxle gear rotational speed sum equals the twice of bevel gear wheel rotating speed, thus the flexibility and the stability of turning when having strengthened the minicar four-wheel drive.

In order to guarantee that bevel pinion has enough support stiffnesses, above-mentioned bevel pinion is made unitary whole formula structure for axle and gear, and the axle of this bevel pinion is bearing on the propons housing by two cone bearings.

Above-mentioned flange plate is by the pad axial limiting, and by nut check on the axle of bevel pinion, the front portion of flange plate has annular boss, this annular boss stretches in the propons housing, and is provided with oil sealing between the inwall of annular boss and propons housing.Above structure can guarantee compact structure, prevents that lubricant oil from leaking, and can make things convenient for front propeller shaft again to be connected, to accept the power of front propeller shaft better.

Above-mentioned left and right half is two ball cage universal joint semiaxis structures, and the propons of minicar adopts two ball cage universal joint semiaxis structures, has further improved travelling comfort and the car load passing ability taken.

Beneficial effect: the utility model can make minicar by the lower road surface of adhesion coefficient, particularly by muddy or frost boiling highway section the time, adopt four-wheel drive, minicar has enough big ground surface driving power like this, can prevent effectively that tire is absorbed in mire or skids, strengthened the grade ability of minicar greatly, effectively improved the passing ability of automobile, for people's trip brings great convenience.

Description of drawings

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

Fig. 2 is the A-A sectional view of Fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1 and Figure 2, the utility model is made of parts such as propons housing 1, front axle housing cover 2, differential casing 3, bevel pinion 4, bevel gear wheel 5, left half axle 6, right axle shaft 7, differential gear 8, planetary pinion 9 and flange plate 12.Wherein the inner chamber of propons housing 1 is divided into pre-large post-small two sections, and the front end and back end of propons housing 1 is all uncovered, and at the front end spiral-lock front axle housing cover 2 of propons housing 1, both form the front reduction gear casing by bolt.Bevel pinion 4 is made unitary whole formula structure for axle and gear, the axle of bevel pinion 4 is by two cone bearings 11,11 ' be bearing in the back segment of propons housing 1 inner chamber, the gear parts of bevel pinion 4 is at the front end of axle, and being arranged in the leading portion of propons housing 1 inner chamber, the tail end that bevel pinion is 4 stretches out from the ear end face of front axle housing body 1.

From Fig. 1, Fig. 2 as can be known, suit flange plate 12, pad 13 and nut 14 successively at the rear portion of 4 of bevel pinions, wherein flange plate 12 is connected with the axle spline of bevel pinion 4, the disk body of these flange plate 12 rear ends partly is positioned at outside the propons housing 1, the front portion of flange plate 12 has an annular boss, this annular boss stretches in the propons housing 1, and with cone bearing 11 ' the ear end face butt, cone bearing 11 ' front-end face and the ear end face of cone bearing 11 between divide spacer 16 spacing mutually by bearing, and the front-end face of cone bearing 11 is spacing by the gear parts of bevel pinion 4.Be provided with oil sealing 17 and flange plate cover plate 18 on the annular boss of flange plate 12 front portions, wherein oil sealing 17 is positioned at the open-mouth of propons housing 1 tail end, seals; Flange plate cover plate 18 covers on the uncovered outside of propons housing 1 afterbody, plays protective action.Described pad 13 is arranged in the step hole that flange plate 12 exterior edge face central authorities offer, and to flange plate 12 axial limitings, by nut 14 lockings.

From Fig. 1, Fig. 2 further as can be known, differential casing 3 is positioned at the leading portion of propons housing 1 inner chamber, the left and right two ends of this differential casing 3 are bearing in respectively on the propons housing 1 by bevel gear 15, and the outer ring of bevel gear 15 is fixing by pressing plate 19, and oil sealing is equipped with in the outside of bevel gear 15.Suit bevel gear wheel 5 on differential casing 3, this bevel gear wheel 5 reclines mutually with land on the differential casing 3, and between the two by pressing equally distributed many bolt of circumference, and bevel gear wheel 5 is meshed with bevel pinion 4.And arranged on left and right sides symmetric arrangement left and right half 6,7 in described propons housing 1 front portion, left and right half 6,7 are two ball cage universal joint semiaxis structures.The inner of left half axle 6 is passed the via hole on the propons housing 1 and is extend in the inner chamber of differential casing 3, and the via hole that the inner of right axle shaft 7 is passed on the propons housing 1 also extend in the inner chamber of differential casing 3.Spielpassung between left and right half 6,7 and the differential casing 3, at differential gear 8 of each suit of the end of left and right half 6,7 the inners, differential gear 8 and corresponding semiaxis employing spline connection.Two planetary pinions 9 are installed on the same axle 10 side by side, and the two ends of axle 10 are stretched in the mounting hole corresponding on the differential casing 3.Described two planetary pinions 9 are between two-semiaxle gear 8, and each planetary pinion 9 all is meshed with two-semiaxle gear 8.

Front-wheel is installed in the outer end of left and right half 6,7 in the utility model, flange plate 12 is connected with the transfer case output shaft by front propeller shaft, output gear and synchronizer are installed on the output shaft of transfer case, the joint of synchronizer with separate by shifting fork mechanism control the gear engagement on transfer case input gear and the output shaft of gear-box.When synchronizer is in separated state, the power of motor passes to back axle by output shaft of gear-box and rear propeller shaft, the rotation of driving trailing wheel, transfer case output gear idle running this moment, the transfer case output shaft does not rotate, minicar adopts two rear wheel drives, is suitable for pavement behavior travels down preferably, to reduce the wearing and tearing of tire and Parts for Power Train; When synchronizer is in jointing state, the transfer case output gear drives the rotation of transfer case output shaft by synchronizer, the transfer case output shaft is given flange plate 12 in the utility model by front propeller shaft with transmission of power, flange plate 12 drives bevel gear wheel 5 rotations by bevel pinion 4, and differential casing 3 and planetary pinion 9 rotate with bevel gear wheel 5.At this moment, power is through planetary pinion 9, left and right half gear 8, and left and right half 6,7 outputs to left and right front-wheel, and front-wheel has also had driving force like this.Minicar adopts two trailing wheels and two front-wheels to drive jointly, and tractive force is enough big, thereby has strengthened the grade ability of minicar greatly, has effectively improved the passing ability of automobile.

Claims

1, a kind of front speed reducer assembly of micro-car, it is characterized in that: the front end and back end of propons housing (1) is uncovered, front end spiral-lock front axle housing cover (2) at propons housing (1), both pass through bolt, form the front reduction gear casing, before described propons housing (1) inner chamber, the rear portion is installed differential casing (3) and bevel pinion (4) respectively by bearing, wherein differential casing (3) is gone up suit bevel gear wheel (5), this bevel gear wheel (5) is meshed with bevel pinion (4), the tail end of bevel pinion (4) axle stretches out from the ear end face of front axle housing body (1), and the rear end of bevel pinion (4) axle is set with flange plate (12); On the anterior left side of described propons housing (1), right bilateral symmetry is arranged a left side, right axle shaft (6,7), a left side, right axle shaft (6,7) the inner is oppositely passed propons housing (1) and is extend in the differential casing (3), a described left side, right axle shaft (6,7) Spielpassung and between the differential casing (3), on a left side, right axle shaft (6,7) differential gear (8) is respectively installed in Nei Duan end, two-semiaxle gear (8) all is meshed with two planetary pinions (9) that are arranged between them, described two planetary pinions (9) are installed on the same axle (10), and the two ends of this axle (10) are stretched into differential casing (3) and gone up in the corresponding mounting hole.

2, front speed reducer assembly of micro-car according to claim 1, it is characterized in that: described bevel pinion (4) is made unitary whole formula structure for axle and gear, and the axle of this bevel pinion (4) is bearing on the propons housing (1) by two cone bearings (11,11 ').

3, front speed reducer assembly of micro-car according to claim 1 and 2, it is characterized in that: described flange plate (12) is by pad (13) axial limiting, and be locked at by nut (14) on the axle of bevel pinion (4), the front portion of flange plate (12) has annular boss, this annular boss stretches in the propons housing (1), and is provided with oil sealing (17) between the inwall of annular boss and propons housing (1).

4, front speed reducer assembly of micro-car according to claim 1 is characterized in that: described left and right half (6,7) is two ball cage universal joint semiaxis structures.