System and apparatus for moving objects

A trolley for lifting and/or moving a load on one or more lines comprising:

• a first side plate and a second side plate;
• and
• a plurality of sheave assemblies in which each sheave assembly includes
• a sheave axle that includes an axle shaft which projects from the first plate and passes into a hole in the second plate, wherein the sheave axle is in tension between the plates,
• and
• a sheave cartridge carried directly on the axle shaft between the plates,
• wherein each sheave cartridge includes:
• a pulley wheel rotatable on a bearing around an axis of the axle shaft;
• and
• a removable retention fastener that extends through the hole in the second plate to engage directly with the axle shaft to removably secure the second plate to the first plate via the axle shaft,
• wherein the axes of the axle shafts of the plurality of sheave assemblies are parallel to one another,
• wherein the sheave axle is secured to the first plate by the releasable fixation fastener with axial and rotational movement of the sheave axle with respect to the first plate being prevented, and
• wherein removal of the sheave axle from the first plate is not required to gain access to each sheave assembly.