CN2203680Y

CN2203680Y - Differential speed variable speed apparatus for tricycle

Info

Publication number: CN2203680Y
Application number: CN 94213792
Authority: CN
Inventors: 刘明山; 刘世新
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-28
Filing date: 1994-05-28
Publication date: 1995-07-19
Anticipated expiration: 2004-05-28

Abstract

The utility model relates to a differential speed variable speed apparatus for a tricycle. The utility model is mainly composed of a box body, a differential casing, a left and a right half shafts, a left and a right half shaft gears, a differential gear, a high and a low speed flywheel driving shafts, a two-way jaw clutch, etc. When running, the power passes through a driving flywheel and a chain to a driven flywheel, and then to the casing of the differential mechanism, and the power is driven onto wheels by a pin shaft, the differential gear, and the right and the left half shaft gears. Thus, the two-wheel driving can be realized. The utility model overcomes the lateral force driven by the single wheel of the tricycle. The running maneuverability is good, and the running safety is improved.

Description

Differential speed variable speed apparatus for tricycle

The utility model relate to a kind of make three-wheel vehicle after two-wheel drive simultaneously, the device of differential and speed change is suitable for manpower, three wheeled motor car.

Existing manpower or equipment of small motor three-wheel vehicle, major part are the back single wheel drive, do not have differential and speed-changing mechanism, because side direction propelling thrust that single wheel drive produces and steering front wheel form a couple, road-holding property are degenerated in travelling, and traffic accident easily takes place.When resistance to motion is big, can not speed change increase propulsive effort, it is low that the part three wheeled motor car is equipped with triple axle gear change driving efficiency.Adopt awl tooth diff or castellated diff, volume is bigger, and processing technology is difficult.According to the weak point of present existence, the utility model provides a kind of three-wheel vehicle differential transmission system.

The purpose of this utility model is, the three-wheel vehicle rear axle differential transmission system of forming by straight-tooth diff and double stage chain wheel change-speed box that provides that a kind of three-wheel vehicle uses, it mainly is by casing, differential casing, left and right sides semiaxis, left and right sides axle side gear, differential gear, high, low-speed flywheel, imput shaft, compositions such as two-way jaw clutch, power is through the active flywheel under steam, chain passes on the driven flywheel, reaches differential casing through bearing pin, differential gear, left and right sides axle side gear is driven on the wheel, has realized the two-wheel driving, overcome the side force that the three-wheel vehicle single wheel drive produces, make to turn to smooth-goingly, the road-holding property that travels is good, has improved driving safety.

Referring to accompanying drawing

Fig. 1 is the utility model longitudinal sectional drawing

Fig. 2 is the utility model straight-tooth diff schematic diagram

Fig. 3 is the utility model gear shift registration device A-A section-drawing

It mainly is by casing for a kind of differential speed variable speed apparatus for tricycle described in the utility model, differential casing, and left and right sides semiaxis, left and right sides axle shaft gear, differential gearing, high low-speed flywheel, The composition such as driving shaft, two-way jaw clutch; In the differential casing (5) of casing (19) lower end, left and right sides axle shaft gear (3) is housed, and be engaged with two pairs of intermeshing differential gearings (2) at the symmetrical axle head of left and right sides axle shaft gear (3), differential gearing (2) can rotate at bearing pin (1), and bearing pin (1) is fixed on the differential casing (5); Be equipped with for the low speed that the trackslips active flywheel (10) of pawl and high speed active flywheel (12) both sides on the driving shaft (20) of upper end employing bearing (21) supporting of casing (19), and the middle part of driving shaft (20) is fixed with the two-way jaw clutch (11) that can horizontally slip by key (15); The both sides of differential casing (5) are fixed with the driven flywheel of high speed (4) and the driven flywheel of low speed (9), and by chain (22) power are passed to left and right wheels through differential mechanism; Fixing left and right sides axle shaft gear (3) is by the fixing left and right sides semiaxis (6) on the left and right wheels of key (7) in the differential casing (5); Two-way jaw clutch (11) is by being fixed on selector fork (16) the move left and right conversion high, low speed gear on the shift fork bearing pin; Shift fork (16) is fixed on the declutch shift shaft (17) of spring steel ball (18) location; The driven flywheel of high speed (4), the driven flywheel of low speed (19), high speed initiatively flywheel (12), low speed active flywheel (10), driven flywheel (4) are the one-directional rotation flywheel for ratchet.

Its principle of a kind of differential speed variable speed apparatus for tricycle described in the utility model is, power is through the active flywheel, chain passes on the driven flywheel, reach differential casing through bearing pin, differential gearing, axle shaft gear is at last to driving on the wheel, when straight-line travelling two sidecar wheels rotate with same rotational speed, at this moment differential gearing does not have rotation, revolve round the sun with the differential housing, this moment, differential gearing was equivalent to the between cog that an equiarm rod member inserts left and right sides axle shaft gear, make left and right sides semiaxis revolution equate to rotate, driving torque gives moment equates respectively to be 1/2nd on the semiaxis of the left and right sides. When the tricycle negotiation of bends, left and right sidesing driving wheel, on one side operating range big, the another side operating range is little, the resistance that acts on the driving wheel is bigger on one side, littler on one side, at this moment differential gearing also can rotation in revolution, on one side the revolution that increases of semiaxis equal the revolution that the another side semiaxis reduces, the moment that transmits through differential casing, the moment of giving on the semiaxis of the left and right sides is unequal, and left and right wheels has driving force to exist, and visible differential mechanism makes two cars Wheel can both obtain driving force, and steering front wheel is not produced side direction moment, is conducive to the balance control of tricycle in travelling. When tricycle goes up a slope and bear a heavy burden, can stir selector fork left, at this moment low speed active flywheel is passed to the driven flywheel of low speed to moment, has increased gearratio, and it is laborsaving to make the speed of a motor vehicle reduce driving.

Embodiment:

A kind of three-wheel vehicle differential transmission system described in the utility model, in the lower end of casing (19) straight-tooth differential casing (5) is housed, differential casing (5) two ends are fixed with driven flywheel of low speed (9) and the driven flywheel of high speed (4), are in transmission connection with low speed active flywheel (10) and high speed active flywheel (12) respectively by chain (22).Left and right sides axle side gear (3) is housed in differential casing (5), and the left and right sides semiaxis (6) that connects left and right wheels is fixed on the left and right sides axle side gear (3) by key (7); Differential casing (5) two ends and axle side gear (3) are bearing fit.Mesh with two pairs of intermeshing differential gears (2) respectively on left and right sides axle side gear (3), differential gear (2) can trackslip on bearing pin (1).Manpower or mechanomotive force pass to respectively on driven flywheel of high speed (4) or the driven flywheel of low speed (9) through chain (22) by high speed active flywheel (12) or low speed active flywheel (10), pass to differential housing (5) again to bearing pin (1), differential gear (2) on the bearing pin (1) is passed to left and right sides axle side gear (3) to power, again through left and right sides semiaxis (6) to wheel.The imput shaft (20) of bearing (21) supporting is housed in the upper end of casing (19), imput shaft (20) on the casing (19) goes up and is fixed with driven flywheel (14) by key (13), directly accept manpower or mechanomotive force, the low speed that trackslips active flywheel (10) and high speed active flywheel (12) for pawl are housed at imput shaft (20) two ends simultaneously, key (15) the two-way jaw clutch (11) that can horizontally slip is arranged in the middle of the imput shaft (20), jaw clutch (11) is by control fork (16) sway conversion height, low gear, make the power transmission chain movement, not power transmission chain does not then move.Realize differential with this, two-wheel is driven, travel steadily, easily handle driving efficiency height, laborsaving.

Claims

1, a kind of three-wheel vehicle differential transmission system, it is made up of casing, differential casing, left and right sides semiaxis, left and right sides axle side gear, differential gear, flywheel, imput shaft, two-sided jaw clutch etc., it is characterized in that, in the differential casing (5) of casing (19) lower end, left and right sides axle side gear (3) is housed, and be engaged with two pairs of intermeshing differential gears (2) at left and right sides axle side gear (3) symmetry end, differential gear (2) can be gone up at bearing pin (1) and rotate, and pin moving (1) is fixed on the differential casing (5); Be equipped with for the low speed that the trackslips active flywheel (10) of pawl and high speed active flywheel (12) both sides on the imput shaft (20) of upper end employing bearing (21) supporting of casing (9), and the two-way jaw clutch (11) that can horizontally slip is fixed at the middle part of imput shaft (20) by key (15).

2, three-wheel vehicle differential transmission system according to claim 1 is characterized in that the both sides of differential casing (5) are fixed with driven flywheel of high speed (4) and the driven flywheel of low speed (9), and by chain (22) power is passed to left and right wheels through diff; The left and right sides axle side gear (3) of differential casing (5) internal fixation is by the fixing left and right sides semiaxis (6) on the left and right wheels of key (7).

3, three-wheel vehicle differential transmission system according to claim 1 is characterized in that, two-way jaw clutch (11) is by being fixed on control fork (16) the sway conversion height on the shift fork bearing pin, low gear; Shift fork (16) is fixed on the declutch shift shaft (17) of spring steel ball (18) location;

4, three-wheel vehicle differential transmission system according to claim 1, it is characterized in that the driven flywheel of high speed (4), the driven flywheel of low speed (9), active flywheel (12) at a high speed, low speed is flywheel (10) initiatively, and driven flywheel (14) is the unidirectional rotation flywheel for ratchet.