公开(公告)号：US20230166790A1

公开(公告)日：2023-06-01

申请号：US17922744

申请日：2021-04-16

Applicant: Caterpillar SARL

Inventor： Matthew Lee DIXON ,  Steven Edward JOHNSON ,  Adam J. ADEEB

IPC: B62D5/12 ,  B62D12/00 ,  B62D5/06 ,  B62D5/09 ,  F15B15/14

CPC classification number: B62D5/12 ,  B62D5/09 ,  B62D5/061 ,  B62D12/00 ,  F15B15/1447

Abstract: A steering system for an articulated truck. The articulated truck is formed of a tractor and a trailer and an articulation joint. The steering system includes a hydraulic cylinder, with a cylinder barrel and a piston. The steering system provides for changes in angle between the tractor and the trailer. The hydraulic cylinder includes a snubbing tube projecting into the cylinder barrel. A hydraulic fluid passage opens into the cylinder barrel within the snubbing tube. The snubbing tube includes a main slot and a plurality of channels each extending between an interior and an exterior of the snubbing tube. The plurality of channels have a cross sectional area smaller than a cross sectional area of the main slot. When the articulated truck is steered, the piston moves in the cylinder barrel and the snubbing tube dampens the movement to prevent forces generated by the piston damaging the articulated truck.