Heavy duty industrial scale
AssigneeGardner-Denver Company
InventorFred Miller Conley
Life of this patent
Estimating the term…
Abstract
A plurality of mounts carry a weighbridge or platform. Each mount has a transducer that carries the mounts portion of the load and indicates weight by strain in shear. The weighbridge loads a horizontal cross pin. The pin, in turn, loads a link that loads a second, integrally connected link. The second link loads the middle of the transducer of the mount in shear. The transducer and cross pin lie orthogonally. The ground rigidly supports the ends of the transducer. The links coupling the transducer and cross pin transmit only vertical forces to the transducer to load the latter only in shear and permit horizontal movement of the weighbridge.
Claims33
In a weight determining apparatus having a means for supporting an object to be weighed, a plurality of mounts carrying the support means above ground, transducer means of the mounts responsive to measure the weight of the object by elastic deformation of the transducer means, and means responsive to the transducer means to indicate the weight of an object, an improvement in each of the mounts which comprises:
- a. a shear loaded transducer;
- b. means for mounting the transducer in the horizontal with the ends thereof rigidly affixed to ground;
- and
- c. means for vertically loading the transducer with the support means and the object intermediate the ends of the transducer, the entire weight of the support means and the object being supported by the transducers of all the mounts, the loading means yielding freely to all horizontal forces by moving pendulously with respect to the transducer in a first vertical plane containing the horizontal axis of the transducer and in a second vertical plane normal to the first vertical plane, the yielding of the loading means isolating the transducer from the horizontal forces.
In combination with a heavy duty industrial scale of the type having a weighbridge supported by a plurality of load indicating mounts, and means responsive to signals from all the mounts to indicate the weight of an object, an improvement in each of the mounts which comprises:
- a. a shear-loaded transducer horizontally disposed;
- b. means for rigidly mounting the ends of the shear-loaded transducer to ground;
- c. means for loading the shear-loaded transducer only in shear in a zone intermediate the ends of the transducer are only in a vertical direction;
- d. means on each side of the loading zone for producing signals responsive to shear load;
- and
- e. means for loading the transducer including means for permitting horizontal movement of the weighbridge in response to horizontal forces by pendulous movements of the loading means with respect to the transducer in a first vertical plane containing the horizontal axis of the transducer and in a second vertical plane normal to the first vertical plane.
In an industrial scale of the type which has a weighbridge for supporting an object to be weighed, a plurality of mounts on the ground for carrying the weighbridge, a transducer for each mount loaded by the weighbridge, the loading of all the transducers producing a signal which indicates the load, and means for totalizing the signals to get total load, an improvement for each mount which comprises:
- a. the transducer being a shear-loaded transducer lying in the horizontal and having a medial groove normal to the horizontal axis of the transducer and extending along the top of the transducer;
- b. means rigidly mounting the ends of the transducer to ground;
- and
- c. means for loading the transducer at the groove in the vertical and normal to the horizontal axis of the transducer, the loading means including a link having a passage, the passage being in receipt of the transducer and having an upper perimeter bearing on the groove, the link being capable of moving freely in the horizontal without loading the transducer in the horizontal, and means for taking the load on the mount of the weighbridge by the link and to transmit this load to the transducer where the link bears on the transducer.
An improvement in a weight determining apparatus having a weighbridge for supporting an object to be weighed, a plurality of mounts carrying the weighbridge above ground, transducer means of the mounts responsive to measure the weight of the object by elastic deformation of the transducer means, and means responsive to the transducer means to indicate the weight of an object, the improvement characterized in that:
- a. each of the mounts is located laterally of the weighbridge;
- b. the transducer of each of the mounts is loaded in shear;
- c. each mount has menas for mounting the transducer in the horizontal with the ends thereof rigidly affixed to ground;
- and
- d. each mount has means for vertically loading the transducer with the weighbridge and the object intermediate the ends of the transducer, the entire weight of the weighbridge and the object being supported by the transducers of all the mounts, the loading means yielding freely to all horizontal forces to isolate the transducer from such forces by permitting pendulous movement of the loading means with respect to the transducer in response to the horizontal forces.
Dependencies are inferred from the claim text.