公开(公告)号：WO2006034375A3

公开(公告)日：2006-05-11

申请号：PCT/US2005033898

申请日：2005-09-22

Applicant: CROWN EQUIP CORP

Inventor： DAMMEYER KARL ,  WILLIAM JONES C JR

IPC: B66F9/24 ,  B66F17/00

CPC classification number: A47L11/282 ,  B66F9/22 ,  B66F17/003

Abstract: A materials handling vehicle (10) is provided comprising: a base (20); a carriage assembly (30, 60) movable relative to the base; at least one cylinder (50, 70) coupled to the base to effect movement of the carriage assembly relative to the base; and a hydraulic system (80) to supply a pressurized fluid to the cylinder. The hydraulic system includes an electronically controlled valve (300, 600) coupled to the cylinder. The vehicle further comprises control structure to control the operation of the valve (300, 600) such that the valve is closed in the event of an unintended descent of a carriage assembly in excess of a commanded speed.

Abstract translation: 一种材料处理车辆（10），包括：基座（20）; 可相对于底座移动的托架组件（30,60）; 耦合到所述基座的至少一个气缸（50,70），以实现所述滑架组件相对于所述基座的运动; 以及液压系统（80），用于向缸提供加压流体。 液压系统包括联接到气缸的电子控制阀（300,600）。 车辆还包括用于控制阀（300,600）的操作的控制结构，使得在托架组件的意外下降超过指令速度的情况下，阀被关闭。