| 摘要 |
<p>A twist lock collar 126 comprises an aperture (140, fig 3) and a projection 150. The projection 150 comprises a rotation feature 152 offset from a longitudinal axis of the twist lock shaft 124 and is engagable with a rotation assembly. A load held by the twist lock 120 is transferred through the twist lock collar 126 to a container spreader (10, fig 1). The twist lock collar 126 forms a load cell, which may comprise one or more strain gauges (160, fig 6), a housing portion 136 and a cover portion 138. The twist lock collar 126 may also be at least partly hollow, the hollow 132 may include an annular channel 137 in the housing portion 136. The strain gauges (160, fig 6) may be located on an upper surface 134 inside the hollow 132. The housing 136 and cover 138 portions may define the hollow 132 between them and a hub 142 which defines the aperture 140 for receiving the twist lock shaft 124. The collar 126 may comprise a cable connection point 148 which may be on a top or side surface of the collar 126 and opposite the rotation feature 152. The collar 126 may comprise one or more passages (156, fig 3) for distributing a lubricant. There may also be a base plate 170 between the collar 126 and the surface of the container spreader (10, fig 1). The base plate 170 may overlap an annular recess in the surface of the container spreader (10, fig 1).</p> |
