Land vehicles – Wheeled – Running gear
Patent
1990-01-11
1991-08-06
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
280718, B60G 500
Patent
active
050371258
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to axle suspensions of vehicles and may be used to advantage on trucks with tandem rear axles, either or both of them being of the driving type.
2. Description of Related Art
Zamitter's spring (SU, A,1,040,244) finds an ever-increasing application in suspensions nowadays. It is a C-shaped spring in the form of a plate located in the plane of bending, i.e. one which bends under a load applied in the plane of its maximum stiffness. Zmitter's spring effectively absorbs compression and tensile loads, and combines low specific amount of metal per structure with good resiliency.
A fully articulated axle suspension of a vehicle comprising a C-shaped spring in the form of a plate located in the plane of bending and movably linked to an axle and the vehicle frame has been disclosed in an application filed by R. A. Azmatov et al. The disclosed suspension performs successfully on vehicles with at least two tandem axles. However, the way the suspension is linked to the frame is complex, being accomplished through two bell cranks and a number of hinges. This not only makes the mounting of such suspension a problem but adds to the specific amount of metal per structure of the spring and that of the frame.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a fully articulated suspension of axles of a vehicle which lends itself to fitting on a vehicle frame without difficulty and widens the field of application hereof, due to a change of a point of force application and reaction to the force applied.
This object is materialized by disclosing a fully articulated suspension of tandem axles of a vehicle incorporating a C-shaped spring in the form of a plate located in the plane of bending and movably linked to the axles and frame of the vehicle wherein, according to the invention, the C-shaped spring is hinged to the axles inside its midmost portion and to the frame at the ends, through spring shackles, whereby the axis of each hinge connecting every shackle to the frame is located so that a vertical displacement of the axis of each hinge connecting the spring to the corresponding shackle is at its possible maximum whereas a horizontal displacement is not greater than one half of the permissible deformation of the spring in the horizontal direction.
The fact that the axles are hinged to the C-shaped spring minimizes the number of links between the axles and frame and provides for equalizing a moment of an applied force directly by the moment of spring reaction.
Moreover, since the ends of the C-shaped spring are hinged to the frame through the shackles and are free to move without being hindered by structural members, the spring deflection increases and so does the recoil with the result that the shock-absorbing ability of the suspension increases as well.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention will now be described by way of an example with reference to the accompanying drawings wherein: invention which links the frame of a vehicle to tandem axles;
FIG. 3 is a schematic elevation of the suspension according to the invention which links the frame of a vehicle to a single axle.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring to FIG. 1, the fully articulated suspension is designed to link the frame of a vehicle to tandem axles. The suspension incorporates a C-shaped spring 1 in the form of a plate located in the plane of bending. The spring has a midmost portion 2 and two identical end portions 3 and 4 which are referred to as forward and rearward, respectively, with respect to the vehicle. The spring 1 is movably linked to the axles 5, 6 of the vehicle and to the frame 7 or, more specifically, to side members of the frame. In accordance with the invention, the spring 1 is linked to the axles 5, 6 of the vehicle through hinges 8, 9. The spring 1 is also linked with its end portions 3, 4 to the frame 7 through spring shackles 10, 11. More specifically, eyes of the spring 1 can pivot about hing
REFERENCES:
patent: 4886292 (1989-12-01), Azamatov et al.
Azamatov Ramil A.
Grechany Jury A.
Nedorezov Vladimir A.
Oblovatsky Anatoly K.
Zamitter Mikhail N.
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