Removable dolly for steerable movement of a load

Device for lifting, steerably moving and putting down a load including:

• a removable dolly including a chassis, a steering system and an orientable maneuvering bar, said chassis comprising, in a front part, fixed anchor means including in an upper part lifting means and in a lower part first abutment and locking means, said steering system including two steerable wheels mounted in yokes individually pivoted to the chassis about substantially vertical shafts offset transversely relative to each other and a system of links adapted to hold said wheels parallel at all times and including two longitudinal links pivoted to said yokes about substantially horizontal shafts and a transverse link articulated at its ends to said longitudinal links about a substantially vertical shafts, said maneuvering bar being provided with a handle for use by an operative and being pivoted to said chassis by a double pivot and to said transverse link about a substantially vertical pivot, said maneuvering bar and said chassis being further provided with complementary temporary locking means adapted to immobilize said maneuvering bar in a predetermined orientation relative to said chassis, as required,
• an anchor plate including in an upper part retaining means and in a lower part second abutment and locking means, said retaining means being adapted to be fitted over said lifting means from above so as to form conjointly a temporary pivot with a transverse axis disengagable only by lowering of said lifting means relative to said retaining means, said first and second abutment and locking means being adapted to cooperate to lock said chassis and said plate in a movable configuration when said retaining and lifting means cooperate, said anchor plate being adapted to be fixed to one end of said load at a height such that when said chassis is in said movable configuration said lifting means are higher than said retaining means.