A crush avoidance device 100,200,300 (n00) for attachment to an elevated work platform (EWP) 10. The EWP 10 includes a machine control system (MCS) 20 adapted to be operated by an operator to be located on an operator support 50 comprising an operator cage 52. The positioning and movement of the operator support 50 is operable to be controlled by the MCS 20 on or in the support 50. The EWP 10 also includes a drive mechanism 62,72 adapted to effect movement of the support 50 by alternatively engaging a base vehicle drive 72 for land-based movement of the EWP 10 and a height adjustment ram 62 for elevating or lowering the support 50. The MCS 20 is adapted to immediately enact a safety response on receiving a signal from a crush avoidance device (CAD) n00. The crush avoidance device n00 includes a motion detector 120,220,320 that is adapted to detect the operator's movement in or on the support 50 without physical contact with the operator. On detecting a movement of the operator that is associated with a crush event, the crush avoidance device 100,200 is adapted to actuate the safety response.
Crush Avoidance Device
2022-09-15
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |