A pulley assembly and an installation for moving objects incorporating such a pulley assembly are disclosed. The pulley includes first and second plates disposed about a median plane. One or more sheaves are disposed between the plates. The or each sheave is carried for rotation about a respective sheave axis that is perpendicular to the median plane. A bollard extends between the plates to provides an interconnection between the plates. The bollard is shaped, whereby its dimension in a direction along a major dimension line, which dimension line that extends radially from one of the sheave axes, is greater than its dimension in a direction perpendicular to that dimension line.

A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

A bell design crown block for a top mounted compensator includes a removable, tilting sheave block mounted within the outside perimeter of a crown block yoke. An actuator installed in the crown block actuates the tilt function. No hinge adaptor is required and the sheave block does not hang past or below the crown block yoke. When used in a floating platform application, idler sheaves are mounted on the crown block yoke and an optional interface beam may be provided for the active heave cylinder head.

A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

A separator element is described (1), adapted to be used in a hoist (100) and configured to be interposed between a first element (2) and a second element (3) of said hoist (100) or to be made in one piece with said first element (2) and/or said second element (3), said separator element (1) comprising a main body (10) and at least two seats (S1, S2, S3, S4) for the passage of as many lengths (F1, F2, F3, F4) of a rope (F) of said hoist (100) through said separator element (1).

A separator element is described (1), adapted to be used in a hoist (100) and configured to be interposed between a first element (2) and a second element (3) of said hoist (100) or to be made in one piece with said first element (2) and/or said second element (3), said separator element (1) comprising a main body (10) and at least two seats (S1, S2, S3, S4) for the passage of as many lengths (F1, F2, F3, F4) of a rope (F) of said hoist (100) through said separator element (1).

A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

A container lifting assembly for raising and/or lowering containers stacked in stacks in a grid storage structure, includes a gripping device configured to releasably grip a container; a raising and lowering mechanism configured to raise and lower the gripping device; and a gearing mechanism configured to wind and/or unwind at least one tether. A motor is configured to actuate the gearing mechanism to wind and/or unwind the at least one tether. The at least one tether is connected to the gripping device such that winding and unwinding of the at least one tether is configured to raise and lower the gripping device.