A trolley for lifting and/or moving a load on one or more lines is disclosed. The trolley comprises first and second spaced plates 10, 12, at least two fixed sheaves 30 that are disposed for rotation about respective parallel axes between the first and second plates 10, 12, and a removable sheave component 48. The removable sheave component 48 is, while in use, disposed for rotation about an axis parallel to that of the fixed sheaves between or adjacent to the first and second plates 10, 12. The removable sheave component is, while in use, connected to the plates, by means of a quick release pin 46 which connection is capable of being disconnected to permit removal of the removable sheave component from connection with the plates. Also disclosed is an installation for lifting and/or moving a load that includes such a trolley and a method of installing such an installation.
System and apparatus for moving objects
2019-08-21
Patent
Electronic Resource
English