Overhead track scale

A track scale for weighing a load on a track, said scale comprising a live rail for supporting said load to be weighed, a pair of load cells spaced longitudinally of said live rail and supporting said live rail, said load cells having sensing means for sensing shear stresses and providing a signal indicative of the load supported by said load cells, each of said load cells having a projecting portion extending transverse to said live rail and supporting said live rail, and means interposed between the projecting portion of each load cell and said live rail for ensuring that the load is applied to said load cell at the same axial position along the length of said load cell, said means interposed between said projecting portion of each said load cell and said live rail comprising first and second concentric annular bearing members, said first bearing member slidably and pivotably containing said second bearing member.

A track scale for weighing a load on a track, said scale comprising a live rail for supporting said load to be weighed, a pair of load cells spaced longitudinally of said live rail and supporting said live rail, said load cells having sensing means for sensing shear stresses and providing a signal indicative of the load supported by said load cells, each of said load cells having a projecting portion extending transverse to said live rail and supporting said live rail, means interposed between the projecting portion of each load cell and said live rail for ensuring that the load is applied to said load cell at the same axial position along the length of said load cell, said live rail being located between the ends of two approach rails, a support plate attached to each approach rail for supporting said respective load cells, and a connecting member secured to each of said support plates and extending therebetween.

A track scale for weighing a load on a track, said scale comprising a live rail for supporting the load to be weighed and which is to be located between two approach rails, a plurality of shear beam load cells spaced longitudinally of said live rail and extending transverse thereto and supporting said live rail, each of said load cells having a projecting shaft portion extending transverse to said live rail and into an opening in said live rail, and bearing means interposed between each projecting shaft portion and said live rail and located in said openings, said bearing means including means supporting said live rail for rotational movement relative to said shaft portions about the axis of the shaft portions and for movement transverse to the axis of one of said shaft portions.

A track scale for weighing a load on a track, said scale comprising a live rail for supporting the load to be weighed and which is to be located between two approach rails, a plurality of shear beam load cells spaced longitudinally of said live rail and extending transverse thereto and supporting said live rail, each of said load cells having a projecting shaft portion extending transverse to said live rail and into an opening in said live rail, and bearing means interposed between each projecting shaft portion and said live rail and located in said openings, said bearing means including means providing for relative rotational movement of said shaft portions and said live rail, one of said openings in said live rail being circular and the other opening being oval and elongated in the direction of the extent of said live rail thereby permitting longitudinal movement of said live rail relative to said load cell.