| 摘要 |
<p>The present invention comprises a lightweight, portable, adjustable, reusable, preassembled, hydraulic expandable shoring shield for providing safety to personnel working in below-grade excavations. The Shoring shield comprises specially designed solid aluminum extruded sheeting sections forming the walls (2), each mounted with a top cap and lower skid, the walls (2) are provided with a static expandable telescoping structural framework (3) for holding the walls (2) opposed, and also are provided with hydraulic cylinders (10) for expanding the space enclosed between the walls (2), the framework (3) and cylinders (10) thus cooperate in combination with an armored manifold (21) for routing fluid to the cylinders (10).</p> |
