Hydraulically operable trench shoring apparatus and its method of use: Fid-Bau Portal

Hydraulically operable trench shoring apparatus and its method of use

GLENN MOLYNEUX

A trench shoring apparatus 10 comprises first and second side panels 12a-b with a top edge, a bottom edge and side edges, the panels being connected in a parallel spaced-apart configuration by a transverse strut being mounted proximate each side edge thereof and nearer the top edge than the bottom edge. An actuator varies the length of the strut from a first length to a second length. A method of using said apparatus is further provided which comprises coupling a removable beam to the apparatus and using a hydraulic supply to retract the strut. The actuator may position the strut to the second length to deploy the apparatus when in the trench, the actuator being in a rigid condition whilst the apparatus is deployed in the trench. The actuator may further comprise a cylinder and piston 58 pumped with a hydraulic fluid including a check valve to lock the strut. The strut may comprise first and second strut arms 20a-b with structural ribs extending from first 26 and second 28 faces and may be an inverted L-shape in plan view. Arms 20a-b may comprise female and male engagement portions 30 and 32 that slidably engage with each other. The apparatus may include a fail safe that incorporates a ratchet mechanism. Also disclosed is a frame suitable for a trench shoring apparatus.

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