CN2424954Y

CN2424954Y - Mid-set double front wheel suspension arrangement

Info

Publication number: CN2424954Y
Application number: CN 00220504
Authority: CN
Inventors: 何家铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-02
Filing date: 2000-06-02
Publication date: 2001-03-28
Anticipated expiration: 2010-06-02

Abstract

The utility model relates to a front wheel suspension device for a vehicle, which comprises intermediate double front wheels, a transverse swinging arm and a steering rocker arm, wherein, the intermediate double front wheels are coaxially connected with each other and have a short wheelbase in between; the steering rocker arm is simultaneously and fixedly connected with a steering main shaft and the transverse swinging arm of the vehicle. The wheel shafts of the intermediate double front wheels are embedded in a shaft groove of the transverse swinging arm which is provided with a main pin. The intermediate double front wheels can rotate and swing around the main pin by the wheel shaft and the transverse swinging arm so that the intermediate double front wheels of the vehicle can simultaneously touch the ground when the vehicle turns or runs on a rugged ground. Thus, the adhesive force of the vehicle to the ground is increased, and the roll-over of the vehicle is avoided.

Description

Mid-double front wheel draft hitch

The utility model relates to mid-double front wheel draft hitch, is a kind of front wheel suspension mechanism of power actuated vehicle.

Three wheeled motor car comprises motor-tricycle, three wheeled transport vehicle used for farm, and three wheeled motor vehicle, tri-truck etc., front-wheel are wheels, have small-sized, light advantage; But also there is anterior principal characteristic shakiness, easily the shortcoming of overturning.Therefore I have designed the self-propelled vehicle that a kind of front-wheel is mid-two-wheel on the basis of former three-wheel vehicle, be that front-wheel is two mid-wheels arranged side by side, two-wheeled links to each other with minor axis, thereby can be considered a double tyre wheel, it had both kept small-sized, the light advantage of three-wheeled vehicle, made the steadily of centre of gravity of front part of vehicle again.

The purpose of this utility model provides a kind of draft hitch that contains mid-double front wheel, and it turns to this mid-double front wheel about can be neatly, and deformationization is swung freely everywhere, thereby improves the safety and the traveling comfort of vehicle '.

This mid-double front wheel draft hitch contains a pair of to lack the mid-front-wheel that wheel shaft links to each other, also comprise a QL and a pitman arm, turn to main shaft and the QL of pitman arm while with vehicle is fixedly linked, the wheel shaft of mid-double front wheel is embedded in the axial trough of QL, QL is provided with stub, and double front wheel can be by wheel shaft and QL around this stub rotary oscillation.This suspension also comprises by a pair of LL and a leaf spring, this two LL the rear end hinged with bearing pin and vehicle frame, front end converges into one and fixing with the axle sleeve welding that turns to main shaft, and the middle part of leaf spring is mounted on and turns on the main shaft sleeve, and two ends, the left and right sides link to each other with vehicle frame by hanger.

The utility model draft hitch can turn to the mid-double front wheel of vehicle neatly along with the rotation of direction machine, when vehicle turns round or road surface when being uneven, QL can rotate suitable angle around stub, make two front-wheels realize teeter according to change of topography, guarantee that two-wheeled lands simultaneously, increase and ground-surface adhesive ability.In addition, when changing, the double front wheel longitudinal stress can swing up and down around vehicle frame with LL.Therefore this draft hitch can make double front wheel according to turning round or the ground-surface situation, automatically about or swing up and down, make the vehicle body held stationary, guarantee safety and comfort, avoid roll-over accident.

Below in conjunction with description of drawings example structure of the present utility model.

Fig. 1 is the structural representation of this mid-double front wheel draft hitch.

Fig. 2 is that A-A cutaway view/Fig. 3 of Fig. 1 is that the B of Fig. 1 is to view.

As shown in Figure 1, double front wheel 14,14 ' link to each other with a short wheel shaft 10, the axial length of wheel shaft 10 is shorter, and therefore the wheelspan of two front-wheels is very little, can be considered a double tyre wheel, and is in mid-position (referring to Fig. 3) at the front end of vehicle frame 1, is provided with front brake assembly 9; Turn to the lower end and pitman arm 8 welding of main shaft 3.Turn to the outer axle sleeves 15 that are with of main shaft 3, its two ends up and down be equipped with bearing 2 and 2 '.The teeter principle of this suspension is seen Fig. 1 and Fig. 2.QL 11 upper ends and pitman arm 8 are connected with set pin, and the wheel shaft 10 of double front wheel is embedded in the axial trough of QL 11 and is integral, QL 11 when stub 12 rotations, double front wheel 14,14 ' also with wheel shaft 10 together around stub 12 rotary oscillations.When ground, the left and right sides is uneven or vehicle when turning round, double front wheel can be adjusted left and right sides two-wheel height by this teeter, guarantee that two front-wheels land simultaneously, increases and ground-surface adhesive ability, avoids overturning.Among Fig. 2, turn to main shaft 3 upper ends that track arm 4 is housed, this joint arm 4 is connected with the wheel steering device of vehicle, during steering wheel rotation, track arm 4 promptly drives and turns to main shaft 3 to rotate to an angle, pitman arm 8, QL 11 also together rotate around the axis of main shaft 3 synchronously simultaneously, realize turning to of double front wheel.The structural principle of the longitudinal oscillation of this mid-double front wheel suspension is seen Fig. 1, Fig. 2 and Fig. 3.The two ends, the left and right sides of leaf spring 7 link to each other with vehicle frame 1 by hanger 6, and the middle part is fixed on the axle sleeve 15 that turns to main shaft by articulating; The rear end of two LLs 5 is hinged by bearing pin 13 and vehicle frame 1, and preceding rectifying converges and be weldingly fixed on the axle sleeve 15 (see Fig. 3 and referring to Fig. 2).The weight of front part of vehicle gives axle sleeve 15 by leaf spring 7 transmission, axle sleeve by two bearings 2 pass to turn to swing arm 8 and two front-

wheels

14,14 '.Therefore when changing, front-wheel can be done suitable longitudinal oscillation with LL bearing pin 13 in the oscillating region of leaf spring when the longitudinal stress of the vehicle power of ground direction (promptly perpendicular to).

Claims

1. mid-double front wheel draft hitch, the mid-double front wheel that coaxial continuous short wheelbase is arranged, it is characterized in that also comprising a QL and a pitman arm, turn to main shaft and the QL of pitman arm while with vehicle is fixedly linked, the wheel shaft of mid-double front wheel is embedded in the axial trough of QL, QL is provided with stub, and double front wheel can be by wheel shaft and QL around this stub rotary oscillation.

2. mid-double front wheel draft hitch according to claim 1, it is characterized in that also comprising by a pair of LL and a leaf spring, the rear end of this two LL is hinged with bearing pin and vehicle frame, front end converges into one and fixing with the axle sleeve welding that turns to main shaft, the middle part of leaf spring is mounted on and turns on the main shaft sleeve, and two ends, the left and right sides link to each other with vehicle frame by hanger.