Land vehicles – Wheeled – Running gear
Reexamination Certificate
1999-10-08
2001-05-15
Boehler, Anne Marie (Department: 3618)
Land vehicles
Wheeled
Running gear
C074S4710XY, C280S091100
Reexamination Certificate
active
06231060
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to off-track vehicles, specifically, to self-propelled vehicles with controlled running wheels.
There is a widely known vehicle with controlled running wheels incorporating a steering with a reference-unit element built in the form of a steering wheel and having set-point devices of wheel turn angles. The set-point devices are kinematically linked to the reference-unit element by means of the steering trapezium which represents a matching unit for turn angles of a wheel pair and is intended for ensuring a preset movement path of a vehicle turn center.
The said vehicle has a number of faults, which are as follows:
The accomplishment of the wheel turn matching unit in the form of a steering trapezium rules out the possibility of turning the wheels through angles not exceeding 30-40° which considerably restricts the vehicle maneuverability;
The use of the matching unit (steering trapezium) for a direct linkage between the wheel pair predetermines the possibility of realizing only the straight path of the vehicle turn center movement. The straight path coincides with the vehicle transverse axis, which also restricts its maneuverability.
There is also a well-known vehicle with controlled running wheels in which each wheel is linked to its matching unit and to its turn angle set-point device, in which the matching units and set-point devices made in the form of computer and electromechanical converter devices.
In a vehicle like this there are no faults inherent in the previous analogue. However the use of computer and electromechanical devices complicates the vehicle design.
OBJECTS AND SUMMARY OF THE INVENTION
Used as a basis for the invention is the task of creating a vehicle with controlled running wheels in which the matching unit would incorporate such elements which would be made in such a manner and linked to each other in such a way and the number of set-point devices would be that which could increase the range of wheel turn angles retaining the matching of the wheel turn angles and preserving the simplicity of the vehicle design and also ensure the possibility of realizing various movement paths of the vehicle turn center, including curved paths as well, and in so doing raise the vehicle maneuverability.
The set task is solved in such a way, that the vehicle with controlled running wheels incorporates a steering device with a reference-input element and with turn angle set-point devices linked kinematically with the reference-input element by means of matching units of wheel turn angles intended for ensuring a preset movement path of the vehicle turn center, and each matching unit incorporating a tracer pin and a guide slot.
One of the said components of the matching unit is linked to the reference-input element and the other—to the set-point device, in this case the number of the set-point devices and the number of the said guide slots is equal to the number of wheels controlled by them. All the said set-point devices are turnable and arranged equidistant to each other, and the said tracer pin is installed with a possibility of turning in any of several planes.
REFERENCES:
patent: 1255775 (1918-02-01), Mueller
patent: 5288091 (1994-02-01), Deschamps
patent: 5752578 (1998-05-01), Kellogg
patent: 5862874 (1999-01-01), Brienza et al.
Grenader Michael
Partigula Roman
LandOfFree
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