Locking device for a lorry reversed against a loading ramp

Abstract

Abstract The locking (chocking) device comprises a sled (3) which can move in both direction along a track (2) beneath the location intended for the vehicle perpendicular to a platform (ramp) (1). On the sled (3), a pulling member (4) is attached to an endless chain (26) actuated by a motor (24), and a pair of arms (5, 6) each pivotably mounted (5a, 6a) between a distal end (5c, 6c) where a wedge (7, 8) is fixed, and a proximal end (5b, 6b) connected to the pulling member by a link rod (15, 16), the pair of link rods converging towards the platform. The arms (5, 6) can thus move angularly between a standby position in which they are parallel to the track (2) with the wedges pointing towards the platform (1) and a deployed position in which, bearing against limit stops (33, 34), they form an angle of approximately 90 DEG in order to bring the wedges (7, 8) in line with the wheels of the vehicle. When the chain (36) pulls the sled (3) away from the platform (1), the arms are in the standby position and can slip between the rear wheels of the vehicle. When the chain (36) pulls the sled (3) towards the platform, the arms (5, 6) are separated and the wedges (7, 8) engage under the wheel. <IMAGE>

Inventors

• 👤 Alvaro Bras

Bibliographic Details