SU333811A1 - INDEPENDENT SUSPENSION OF WHEELED VEHICLE - Google Patents

Description

The invention relates to the field of transport engineering.

Independent wheel drive vehicle attachments are known, which contain an elastic element that perceives vertical forces, a shock absorber, a guide device and a wheel stabilizing linear motion of the wheel consisting of a lever pivotally connected to the guide device with the possibility of swinging in a plane parallel to the plane of the road, and elastic elements that perceive horizontal transverse forces.

The purpose of the invention is the two-section stabilization of the linear motion of the wheel when it is subjected to horizontal transverse forces causing lateral drive of the wheel.

For this, in the proposed suspension, the hinge axis of the stabilizer lever is located behind the axis of rotation of the wheel in the direction of the vehicle.

FIG. 1 shows the described suspension of an unguided wheel, top view; in fig. 2 - steering wheel suspension, top view; in fig. 3 is a schematic diagram explaining the kinematics of the proposed suspension.

zhin /, shock absorber 2, designed to receive recoveries from road irregularities and installed in the system of levers Ln 4, respectively, the upper and lower devices. The levers 5 and 4 of the suspension are interconnected at the point O of the stand 5. On the stand there is fixed a lever 6 of the stabilizing device, which can turn around the stand, like around an axis, through a certain angle

± b, and this lever is at the same time supporting wheel 7 of the wheel 8. Thus, the entire wheel can swing around the point O at the same angle of ± 6.

The swings of the lever 6 by means of the pulls 9 are transmitted through the frame 10 to an elastic element connected with the body of the machine. The elastic element is made, for example, in the form of a package of cup springs 11, sandwiched between the moving frame 10 and the fixed cylinder body of the damper 12. Inside the cylinder there are two pistons connected to the moving frame. When a stabilizing device is mounted on the steering wheel, all suspension elements intended to perceive vertical oscillations remain unchanged. In this case, the wheel 8 together with the pivot pin 13 is mounted on the lever 6. . . The pivotal movements of the trunnion 13 are transmitted by means of elements 14-16 of the steering linkage, the swing axis of the lever 15 being aligned with the hinge connecting link 9 and frame 10. Thus, the lever 15 is an element of rigid kinematic feedback that allows to obtain the independence of the turning of the wheel 8 (at an angle of ± b) from the control action from the side of the steering mechanism determined by the thrust movement .16. Suspension works as follows. Let a lateral force act on a moving vehicle at some time. In this case, the tread line of a pneumatic wheel is bent and the wheel begins to move at an angle of 6i withdrawal: relative to the initial direction of motion V. However, under the action of the same force F, the stablization device lever 6, overcoming the resistance of the spring 11, rotates towards the force F by some angle 62. The lever length and rigidity from the elastic element are chosen in such a way that the ratio kb; f fi | qi entrainment, / - lever length, с - spring stiffness. The elastic element is chosen so that the moment created by the side reaction on the wheel relative to the axis of swing of the lever 6 when the wheel is moved to a certain angle is equal to the moment created by the elastic element when the lever is turned at the same angle. Under the specified condition, always angles.:. ;. This means that automatic compensation of the angle of return is achieved, and. The motion paths of the entire transport device are stabilized by the impact of: ... horizontal forces on it causing lateral drive of the wheels. The subject of the invention is the independent suspension of a wheeled vehicle containing an elastic element that perceives vertical forces, a shock absorber, which directs the device and stabilizes the linear motion of the wheel, the device. consisting of a lever pivotally connected with a guide device with the possibility of swinging in a plane parallel to the plane of the road, and elastic elements perceiving horizontal transverse forces, characterized in that, in order to stabilize the linear movement of the wheel when subjected to horizontal - the transverse forces causing its lateral withdrawal; the axis of the joint of the lever of the stabilizing device is located behind the axis of rotation of the wheel in the direction of movement of the vehicle.