The invention is a novel lower-trolley system, comprising a lower trolley (3), a lower-trolley hoisting system, and a lower-trolley travelling system. The lower trolley (3), the lower-trolley hoisting system and the lower-trolley travelling system are all arranged on a quay crane; the lower-trolley hoisting system drives a hoist (14) of the lower trolley (3) to rise and fall, and the lower-trolley travelling system pulls the lower trolley (3) to make same travel in the direction of a double-trapezoid four-track girder (1) of the quay crane; and the lower trolley (3) is hung upside down on outer-side tracks (15) of the double-trapezoid four-track girder (1), and a container (12) hoisted by an upper trolley (2) can pass through the lower trolley (3).

There is provided a method of installing spiral hangers about a messenger line installed between first and second utility poles with a cable being lashed to the messenger line with a lashing wire. The method includes attaching a first and second spiral hangers to the messenger line between first and second utility poles with the first spiral hanger disposed about the messenger line and the cable. The method includes removing the lashing wire from being around the messenger line and the cable adjacent the second spiral hanger. The method includes moving the second spiral hanger towards the second utility pole. The method includes attaching a successive spiral hanger to the messenger line between the spiral hangers and repeating the moving of the second spiral hanger and attaching another successive spiral hanger.

There is provided a method of installing spiral hangers about a messenger line installed between first and second utility poles with a cable being lashed to the messenger line with a lashing wire. The method includes attaching a first and second spiral hangers to the messenger line between first and second utility poles with the first spiral hanger disposed about the messenger line and the cable. The method includes removing the lashing wire from being around the messenger line and the cable adjacent the second spiral hanger. The method includes moving the second spiral hanger towards the second utility pole. The method includes attaching a successive spiral hanger to the messenger line between the spiral hangers and repeating the moving of the second spiral hanger and attaching another successive spiral hanger.

There is provided a method of installing spiral hangers about a messenger line installed between first and second utility poles with a cable being lashed to the messenger line with a lashing wire. The method includes attaching a first and second spiral hangers to the messenger line between first and second utility poles with the first spiral hanger disposed about the messenger line and the cable. The method includes removing the lashing wire from being around the messenger line and the cable adjacent the second spiral hanger. The method includes moving the second spiral hanger towards the second utility pole. The method includes attaching a successive spiral hanger to the messenger line between the spiral hangers and repeating the moving of the second spiral hanger and attaching another successive spiral hanger.

There is provided a method of installing spiral hangers about a messenger line installed between first and second utility poles with a cable being lashed to the messenger line with a lashing wire. The method includes attaching a first and second spiral hangers to the messenger line between first and second utility poles with the first spiral hanger disposed about the messenger line and the cable. The method includes removing the lashing wire from being around the messenger line and the cable adjacent the second spiral hanger. The method includes moving the second spiral hanger towards the second utility pole. The method includes attaching a successive spiral hanger to the messenger line between the spiral hangers and repeating the moving of the second spiral hanger and attaching another successive spiral hanger.

Described herein is a storage system for installation onto a surface, such as a horizontal or vertical wall, such as an interior garage ceiling, floor, or wall. The system can be used to move, lift, and/or store articles, such as bicycles, skis, storage containers, and the like. The system generally comprises a track defining a longitudinally extending path and a trolley assembly coupled to the track. The trolley assembly generally comprises a trolley body, a pair of opposing sidewalls extending from the trolley body, and a roller assembly positioned between the pair of opposing sidewalls. The trolley assembly may further comprise a carrier attachment to secure an article thereto. A drive member and drive unit can be used for effecting movement so as to shift the trolley assembly from one position to another. The system generally comprises simple and easy-to-install components, thereby providing advantages over prior storage systems.

A lifting mechanism includes a lifting beam, a hanging portion suspended below the lifting beam and including a hanging base, a hanging chain, a movable sprocket disposed on the hanging base, a distance adjusting sprocket, and a power mechanism. The distance adjusting sprocket and the power mechanism are arranged side by side and separately on the lifting beam. The power mechanism includes a fixed sprocket and a driving portion. The fixed sprocket is driven by the driving portion to drive the hanging chain to move, so as to lift or lower the hanging portion. An end of the hanging chain is fixed to the lifting beam, and the other end of the hanging chain engages the movable sprocket, the fixed sprocket, and the distance adjusting sprocket, or the other end of the hanging chain engages the movable sprocket, the distance adjusting sprocket, and the fixed sprocket.

A lifting mechanism includes a lifting beam, a hanging portion suspended below the lifting beam and including a hanging base, a hanging chain, a movable sprocket disposed on the hanging base, a distance adjusting sprocket, and a power mechanism. The distance adjusting sprocket and the power mechanism are arranged side by side and separately on the lifting beam. The power mechanism includes a fixed sprocket and a driving portion. The fixed sprocket is driven by the driving portion to drive the hanging chain to move, so as to lift or lower the hanging portion. An end of the hanging chain is fixed to the lifting beam, and the other end of the hanging chain engages the movable sprocket, the fixed sprocket, and the distance adjusting sprocket, or the other end of the hanging chain engages the movable sprocket, the distance adjusting sprocket, and the fixed sprocket.

A cable winch arrangement (1) which includes at least one cable drum (2), which is mounted rotatably about a drum axis (3), for winding up and/or unwinding at least one cable (30-37), and a supporting structure (20), and a spindle drive (14) for displacing the cable drum (2) relative to the supporting structure (20), wherein the spindle drive (14) has a spindle (16) extending along a spindle axis (15), and a cable run-off point (6) of the at least one cable (30-37), at which the cable (30-37) runs tangentially onto and/or out from the cable drum (2), is at least substantially positionally fixed with respect to the supporting structure (20), and the spindle axis (15) is arranged coaxially with respect to the drum axis (3) of the cable drum (2).

A cable winch arrangement (1) which includes at least one cable drum (2), which is mounted rotatably about a drum axis (3), for winding up and/or unwinding at least one cable (30-37), and a supporting structure (20), and a spindle drive (14) for displacing the cable drum (2) relative to the supporting structure (20), wherein the spindle drive (14) has a spindle (16) extending along a spindle axis (15), and a cable run-off point (6) of the at least one cable (30-37), at which the cable (30-37) runs tangentially onto and/or out from the cable drum (2), is at least substantially positionally fixed with respect to the supporting structure (20), and the spindle axis (15) is arranged coaxially with respect to the drum axis (3) of the cable drum (2).