Measuring and testing – Dynamometers – Responsive to force
Patent
1989-05-30
1993-11-09
Chilcot, Jr., Richard E.
Measuring and testing
Dynamometers
Responsive to force
73862637, G01L 104
Patent
active
052592537
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a dynamometer with an elastic force reducing parallel guide. More particularly, this invention relates to a dynamometer in which the load-carrying element is arranged between the load carrier of the dynamometer and the frame of the parallel guide, whereby the load-carrying element simultaneously serves to arrest the entire dynamometer.
BACKGROUND OF THE INVENTION
Such dynamometers are known, for example, from European Patent 85810126.4. There, the load-carrying element is installed perpendicular to the rods forming the parallel guide and parallel to the force being measured. The measuring system, formed from the parallel guide, the load-carrying element, and an additional rod system, is attached on one side to the frame and on the other side to the load carrier. In such a manner, the frame and load carrier are shielded from load-stipulated deformations by the measuring system. This is also referred to as "drainage". This type of construction is complicated, expensive and results in a structure of considerable height. This is particularly true since jibs must be provided on the side of the frame and on the side of the load carrier to transfer force to the load-carrying element.
The goal of the present invention is to overcome such disadvantages and to provide a measuring system of reduced height which is both simple and less costly to manufacture. It is another goal of this invention to provide a dynamometer for use in weight determination which is insensitive to where the load is applied, thereby eliminating the need for a drainage aid.
SUMMARY OF THE INVENTION
A dynamometer having a parallel guide includes a load carrier for receiving a force and a load-carrying element for measuring the force on the load carrier. The load-carrying element is mounted between the load carrier and the parallel guide. Force transferring elements such as struts are mounted between the load carrier and the load carrier element and the load carrier element and the parallel guide, respectively, such that the horizontal and vertical components of the force measured by the load-carrying element has a ratio in the range of 1:10 to 10:1.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention may be better understood, and its numerous features and advantages will become apparent to those skilled in the art by reference to the accompanying drawings in which:
FIG. 1 is a side view of a first dynamometer constructed in accordance with the teachings of the present invention;
FIG. 2a is an enlarged view of the dynamometer illustrated in FIG. 1 which better illustrates strut 19;
FIG. 2b is a top view of FIG. 2a;
FIG. 3a illustrates a first embodiment of strut 20;
FIG. 3b illustrates a second embodiment of strut 20;
FIG. 3c illustrates a third embodiment of strut 20;
FIG. 4 is a side view of a second dynamometer constructed in accordance with the teachings of the present invention;
FIG. 5 is a side view of a third dynamometer constructed in accordance with the teachings of the present invention;
FIG. 6 is a perspective view of the parallel guide illustrated in FIG. 1;
FIG. 7 is a side view of a fourth dynamometer constructed in accordance with the teachings of the present invention; and
FIG. 8 is a perspective view of the parallel guide illustrated in FIG. 7.
DETAILED DESCRIPTION OF THE INVENTION
Turning first to FIG. 1, a first dynamometer constructed in accordance with the teachings of the present invention may now be seen. The dynamometer comprises frame 1, load carrier 2, two generally horizontal plates 3, 4 and four tie joints 5, 6, 7, and 8. Frame 1, which, for example, may include a generally triangular hollow section, is attached to base plate 12 with screws (not shown). On one side, tie joints 5, 8 connect plates 3, 4, respectively, with frame 1. Similarly, load carrier 2 is connected to plates 3, 4 by tie joints 6, 7, respectively. As herein defined, as "elastic parallel guide" results when plates 3, 4 are of approximately equal length and are generally parallel to each other
REFERENCES:
patent: 2576417 (1951-11-01), Ruge
patent: 2597751 (1952-05-01), Ruge
patent: 2997875 (1961-08-01), Moore
patent: 3805604 (1974-04-01), Ormond
patent: 4009608 (1977-03-01), Ormond
patent: 4020686 (1977-05-01), Brendel
patent: 4343196 (1982-08-01), Wirth et al.
patent: 4655306 (1987-04-01), Saner
patent: 4703816 (1987-11-01), Saner
Gallo Mario
Wirth Johannes
Chilcot Jr. Richard E.
Dougherty Elizabeth L.
Wirth Gallo Messtechnick AG
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