A trolley for mounting on a beam of a gantry, comprising: a first plate; a roller assembly, mounted at an end of the first plate; a shaft, extending outwardly of the first plate; and a second plate, rotatably mounted on the shaft such that the second plate can move between a closed position, in which the second plate engages with the roller assembly and an open position in which the second plate does not engage with the roller assembly.
TROLLEY
2018-09-13
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |