Device for measuring friction between wheel and support
OwnerBorje Arne Gunnar Lonnrothinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a device for measuring friction between wheels and the wheel support. The device of the present invention is such that the friction, upon movement of the wheels, results in a measurable turning moment about a line, perpendicular to the direction of movement and substantially parallel or coinciding with a line through the centers of the wheels. The moment arises and is measured on suspension means of the wheels and/or a member interconnecting them.
Claims8
A device for measuring friction between wheel and support comprising:
- a. at least one wheel with a wheel suspension means permitting the wheel to rotate about a rotation axis line;
- b. means for moving the wheel suspension means with the wheel rolling on the support and somewhat inclined to the direction of movement;
- and
- c. measuring means for measuring the turning moment about a line being on the whole horizontal and substantially perpendicular to the direction of movement, which moment is produced on the wheel suspension means by the forces arising at the movement in the contact surface between the wheel and support.
A device for measuring friction between wheel and support comprising:
- a. two wheels with a wheel suspension means permitting the wheels to rotate each about a rotation axis line, which lines form with the direction for a line through the centers of the wheels angles of substantially equal size;
- b. means for moving the wheel suspension means in a direction substantially perpendicular to the line through the centers of the wheels, the wheels rolling on the support and somewhat inclined to the direction of movement;
- and
- c. measuring means for measuring the turning moment about a measuring line coinciding or in parallel with said line through the centers of the wheels, which moment is produced on the suspension means of the wheels by the force arising at the movement in the contact surfaces between the wheels and the support.
A device for measuring friction between wheel and support comprising:
- a. wheel suspension means comprising an axle with two inclined axle journals;
- b. a first wheel suspended on one of said axle journals to rotate about a first rotation axis line;
- c. a second wheel suspended on the other of said axle journals to rotate about a second rotation axis line, said first and second rotation axis lines lying substantially in the same plane and forming with the direction for a line through the centers of the wheels angles of substantially equal size;
- d. means for moving the wheel suspension means in a direction substantially perpendicular to said line through the centers of said wheels, the wheels rolling on the support and somewhat inclined to the direction of movement, whereby the forces arising at the movement in the contact surfaces between the wheels and support produces a turning moment on said axle about a measuring line in parallel with said line through the centers of said wheels;
- and
- e. measuring means for measuring said moment on said axle about said measuring line.
Dependencies are inferred from the claim text.