Tank weigh module with excess motion restraint

Details Tank weigh module with excess motion restraint Tank weigh module with excess motion restraint

G - Physics

01

G

G01G 23/02 (2006.01)

Patent

CA 2356958

A tank weigh module includes a bottom plate that has two lower stop blocks protruding upwardly therefrom, and a top plate that has an upper stop block protruding downwardly therefrom into a space between the two upper stop blocks with a block free play clearance therebetween. A restraining pin is arranged to extend through aligned pin receiving holes in all of the stop blocks. In the lower stop blocks, the holes provide a tight friction fit for the pin, while the hole in the upper stop block has a larger diameter and provides a pin free play clearance. Motion of the top plate relative to the bottom plate in the back-and-forth Y--direction is limited to the extent of the block free play clearance. Travel of the top plate in the side-to-side X--direction and in the uplift Z-direction is restrained by the extent of the pin free play clearance. Tilting and twisting about the X-, Y-, and Z-axes are also limited by the pin interacting with the blocks and the blocks interacting with each other. A load cell is secured in position between the top and bottom plates by two fixed securing pins and a third removable securing pin attached to the bottom plate, whereby the securing pins are angularly offset by 120° from each other. The weigh module has a simple construction, installation, and servicing, and provides protection against excess uplift, side loading, and tilting while allow complete free floating operation in a normal operating range.

L'invention concerne un dispositif de protection des cellules de charge contre les surcharges. Ce dispositif comprend une semelle (1) dotée de deux sabots d'arrêt inférieurs (5A, 5B) sortant de cette plaque vers le haut, et une pédale (2) dotée d'un sabot d'arrêt supérieur (6A) sortant de cette pédale vers le bas dans un espace situé entre les deux sabots d'arrêt inférieurs (5A, 5B), avec un intervalle laissant du jeu entre les sabots. Une cheville d'immobilisation (8) est agencée de façon à se positionner à travers des trous (7A, 7B) récepteurs alignés dans tous les sabots d'arrêt. La cellule de chargement (9) est fixée en position entre la semelle et la pédale. L'un des trous, au moins, possède un diamètre plus large que celui de la cheville (8) de façon laisser du jeu à la plage opérationnelle normale d'une cellule de charge (9), tandis que l'un des trous, au moins, réalise un ajustement serré à friction.

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