A portable detachable pulley is provided, which includes a gasket, and a buckle assembly is provided on the lower end face of the gasket. The buckle assembly includes two symmetrically distributed first buckles fixedly mounted on the lower end face of the gasket, and a second buckle is provided between the two first buckles. The second buckle is located at an end portion of one side of the two first buckles, and a fastening component is provided at the other end portion of the two first buckles. A connecting piece is movably mounted between the first buckle and the second buckle, and a pulley assembly for rolling is provided beneath the connecting piece. The pulley is designed for use both with and without the pulley assembly, depending on circumstances, such that the processes of assembly and disassembly are highly user-friendly and do not necessitate the use of any tools.

A adjustable caster mounting plate for moving modular structures or other heavy materials with a mounting plate, a caster assembly attached to the bottom of the mounting plate, a primary guide tab attached to the top of the mounting plate, a secondary guide tab attached to the top of the mounting plate, and a mounting tab disposed on the top surface of the mounting plate.

A caster assembly for installation in an electronic equipment enclosure includes a top plate, a forked support member, and an axled wheel. The top plate is attachable to a frame structure of the electronic equipment enclosure and includes a plurality of countersunk recesses. The forked support member extends downward from the top plate, and the axled wheel is supported on the forked support member. The caster assembly is installable in an assembled electronic equipment enclosure by aligning the countersunk recesses of the top plate beneath mating features at an underside of the frame structure such that, once aligned, the weight of the assembled electronic equipment enclosure retains each mating feature of the frame structure within a respective one of the plurality of countersunk recesses in the top plate, thereby retaining the caster assembly in position to support the assembled electronic equipment enclosure.