Land vehicles – Wheeled – Running gear
Patent
1988-07-25
1989-12-12
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
280680, 280686, B60G 500, B60G 1104
Patent
active
048862924
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to devices for absorbing dynamic loads, and more particularly to elastic suspensions of wheeled vehicles.
2. Description of the Prior Art
The presently widely expanding use of wheeled vehicles, as well as their increasing number and variety of functional designations, necessitate higher speeds thereof in laden and unladen state, and greater net loads carried thereby, preferably accompanied by fuel economy.
There is known an elastic suspension of a wheeled vehicle having a frame with at least one axle (cf. e.g., "The KamAZ Truck" by I. M. Jurkovsky and V. A. Tolpygin, Moscow, the DOSAAF Publishwers, 1975, p. 227) comprising a lamination of springs interposed between the frame and axle of the vehicle and mechanically connected thereto.
However, the use in this suspension of a plurality of laminated springs results in linear resilient characteristics of the suspension, which affects the riding performance of the vehicle under certain road surface conditions.
In addition, the spring lamination includes a number spring sufficient to withstand the entire vertical load exerted on the wheels, which results in much metal being consumed for fabricating the suspension.
Another disadvantage of the above prior art suspension resides in that fabrication and assembly of spring the lamination containing a plurality of springs is labour consuming.
It is therefore an object of the present invention to provide an elastic suspension of a wheeled vehicle capable of improving the riding performance of the vehicle.
Another object of the invention is to reduce the amount of metal consumed for fabricating the elastic suspension of a wheeled vehicle.
One more object of the invention is to make fabrication and assembly of the elastic suspension of a wheeled vehicle less labour consuming.
SUMMARY OF THE INVENTION
The invention aims at providing an elastic suspension of a wheeled vehicle having such additional elements which would ensure a predetermined non-linear, resilient characteristic of the suspension, reduce the amount of metal consumed for its fabrication, make the fabrication less labour-consuming and simplify the assembly of the suspension.
The aims of the invention are attained by an elastic suspension of a wheeled vehicle having a frame with at least one axle comprising a lamination of leaf springs interposed between the frame and axle and mechanically connected thereto. According to the invention, the elastic suspension, additionally includes a plate brace-like spring extending lengthwise of the leaf spring lamination, and a fastening assembly by means of which the springs of the leaf spring lamination and the plate brace-like spring are mechanically interconnected at their midportions.
Preferably, the fastening assembly of the elastic suspension of a wheeled vehicle is mechanically linked with the axle, or in the case of two adjacent axles, with the frame of the vehicle, the end portions of the plate brace-like spring being mechanically connected to the frame or to the corresponding axles of the vehicle.
Desirably, the elastic suspension of a wheeled vehicle additionally includes two shackles with one end of each shackle pivotably connected to the end of a corresponding end portion of the plate brace-like spring the other end of each such shackle being connected to the frame or corresponding axle of the vehicle.
Advisably, the elastic suspension of a wheeled vehicle includes a fastening assembly which contains three clamping elements disposed one above another and drawn together, the length of each clamping element being smaller than the length of the midportion of the plate brace-like spring, whereas the outer surface of each extreme clamping element has a longitudinal groove, one such groove has a width corresponding to the thickness of the plate bracelike spring, the width of the other longitudinal groove corresponding to the width of the lamination of leaf springs, the two surfaces of the middle clamping element also having longitudinal
REFERENCES:
patent: 2304780 (1942-12-01), de Fries
patent: 3031203 (1962-04-01), Christenson et al.
patent: 3883125 (1975-05-01), Takatsu
patent: 4570970 (1986-02-01), Burfiend
patent: 4633564 (1987-01-01), Sauber
"The Kamaz Truck", by I. M. Jurkovsky and V. A. Tolpygin, Moscow, the Dosaaf Publishers, 1975, pp. 227-, no translation.
Azamatov Ramil A.
Nedorezov Vladimir A.
Oblovatsky Anatoly K.
Zamitter Mikhail N.
Zema Evgeny M.
Kievsky Inzhenerno-Stroitelny Institut
Rice Kenneth R.
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