Excavating – Peat excavators
Patent
1974-05-21
1976-06-01
Crowder, Clifford D.
Excavating
Peat excavators
37 73, 188268, 308 26, 403151, F02F 390, F16F 900
Patent
active
039598985
ABSTRACT:
Shock mounting arrangements for mounting one end of a rigid dredge ladder and for mounting the holding spud on a dredging barge or dredging platform. In the ladder mounting, pivot pins are connected to one end of the ladder for permitting pivotal movement of the ladder thereabout. The pivot pins are supported in rigid housing structures attached to the barge structure. These housing structures include a plurality of coil springs operatively engaging the pins and the rigid housing structure such that the pins are normally held in a fixed position but are permitted limited radial movement in response to dredging operation shock forces transmitted by way of the ladder to the pin means. Guide means can also be provided to limit the motion of the pin means along a single plane extending perpendicularly to the pivot axis of the ladder. Other shock absorbing means, such as hydraulic means or rubber means can be substituted for the spring means. One arrangement of the invention provides for mounting the dredge ladder for pivoting movement about an axis at the rear of the barge, while another embodiment provides for pivotally mounting the ladder forwardly of the rear of the barge. In the holding spud mounting, a vertically extending housing is provided with radially extending springs for supporting the holding spud in vertical position with respect to the barge. These springs permit limited radial movement to attenuate shifting shock forces caused by winds and water swells.
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