Weighing scales – Structural installation – Vehicle
Patent
1992-04-27
1994-02-15
Miller, Jr., George H.
Weighing scales
Structural installation
Vehicle
177210FP, G01G 1908, G01G 314
Patent
active
052858600
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a weighing device that swivels around an approximately horizontal axis for use on hoisting equipment, such as metering equipment, foundry ladles, and hoisting or emptying equipment for containers.
Several apparatuses of the listed type are known. Numerous patents have been granted for weighing devices, such as, e.g., stacker trucks in which only the loads being transported and simultaneously weighed need to be hoisted; apparatuses are further known in which the whole vehicle including hoisting device is weighed. Garbage container scales, which are connected to a tilting device, are known from U.S. Pat. No. 4,854,406 and German Patent 3,819,169 Al. While the apparatus disclosed in the German patent 3,819,169 Al belongs to the class of stacker truck weighing apparatuses, the U.S. Pat. No. 4,854,406, combined with a "total weight-tare=net weight" weight determination, teaches the use of a large number of apparatuses for the weight determination of a variety of garbage containers in which basically--as is shown from the data--a "total weight tare" weighing is performed. Two of the apparatuses depicted in this U.S. patent in principle measure a torsional moment; the measurement result therefore is dependent on the position of the center of gravity of the garbage container. One of the described apparatuses belongs in the class of stacker truck scales and in the weighing of tons of transportable garbage each apparatus is afflicted by undefinable frictional forces that are not measured simultaneously. An expensive operating concept with selected measuring positions defined by cam-actuated switches are common to all types. In rough operation, which predominates during the collection of garbage, malfunctions of the described apparatuses are obvious.
The object which must be achieved by the present invention comprises the creation of a weighing device with at least one swivel arm that will determine the weight of the container in normal operation of the unit in a suitable range independent of the position and movement.
The inventive concept, depending on several practical examples, will be explained in more detail with use of the attached drawing.
There are shown:
FIG. 1 two practical examples as container scales,
FIG. 2 a detail of the second practical example,
FIGS. 3a, 3b a third practical example as foundry ladle scale.
A loading, tilting, and emptying mechanism comprising a swivel arm 2 and a hydraulic cylinder 3 is mounted on a garbage collecting vehicle 1. Both the swivel arm and hydraulic cylinder are constructed in duplicate and are connected to both sides of the garbage collecting vehicle 1. A grab fork 4 is mounted on each swivel arm 2--as a rule rigidly. The grab fork for receipt of a portable container 5 is brought into an approximately horizontal position and the container 5 is introduced into the grab fork 4. Subsequently, the swivel arm 2 is swiveled on an axle 6 located on the garbage collecting vehicle 1 by increase of the operating pressure of the hydraulic cylinder 3 until the garbage falls out from the container 5. The specific designs of the garbage collecting vehicle 1 with regard to the sliding cover and the container 5 will not be described here since such designs do not involve the invention. This also applies in corresponding manner for the following practical examples.
A part 6 designed as a parallelogram is found on swivel arm 2 and is integrated into this. Two essentially parallel flexural members 7 form the primary springs for an elastic stepdown. The part of the swivel arm 2 lying between axle 6 and the flexural members 7 is designated as internal section 9 and the part lying between the flexible springs 7 and the grab fork 4 is designated as external section 10. The flexural members 7 support the main portion of the weight force engaging the forward end of the one grab arm (therefore, the weight of the container 5, the grab forks 4, and the external section 10). These load portions are designated hereafter by "load". Two spring tongues 8 forming the seco
REFERENCES:
patent: 4645018 (1987-02-01), Garbade et al.
patent: 4854406 (1989-08-01), Appleton et al.
patent: 4947694 (1990-08-01), Kirman et al.
patent: 5004392 (1991-04-01), Naab
Miller Jr. George H.
Wirth Gallo Messtechnik AG
LandOfFree
Container scale does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Container scale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Container scale will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1200969