Drop mass soil compaction apparatus

E - Fixed Constructions – 02 – D

Patent

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E02D 3/02 (2006.01)

Patent

CA 2589723

The invention concerns a drop mass soil compaction apparatus (10, 50) which has a supporting frame (12,64) and a mass (20, 76) which can be raised relative to the frame to an elevated position above a soil surface (40, 61) which is to be compacted. The apparatus includes a mass lifting arrangement for raising the mass to the elevated position such that when the mass is subsequently dropped from such position it impacts on the soil surface in order to compact it. The mass lifting arrangement includes a flexible cable (24, 92) attached to the mass and an hydraulic or pneumatic actuator (36, 68) which is carried by the supporting frame and which acts on the cable in a manner to raise the mass. The cable effectively isolates the mass lifting arrangement, and in particular the actuator, from shock loads generated by impacts of the mass on the soil surface.

La présente invention se rapporte à un appareil de compactage du sol à masse tombante (10, 50), qui comprend un cadre de support (12, 64) et une masse (20, 76) qui peut être levée par rapport au cadre jusqu'à une position élevée au-dessus de la surface du sol (40, 61) qui doit être compactée. L'appareil selon l'invention comprend un agencement de levage de masse, destiné à soulever la masse jusqu'à la position élevée, de façon que, lorsqu'elle est ensuite lâchée à partir d'une telle position, la masse heurte la surface du sol afin de la compacter. L'agencement de levage de masse comporte un câble souple (24, 92) fixé à la masse, et un actionneur hydraulique ou pneumatique (36, 68) qui est supporté par le cadre de support et qui agit sur le câble de manière à soulever la masse. Le câble isole efficacement l'agencement de levage de masse, et en particulier l'actionneur, des effets de choc générés par les impacts de la masse sur la surface du sol.

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