Driving cab hydraulic tipping system - has non-return valve relief feed connected by jet to fluid container during retraction (NL 21.3.78)

摘要

The driving cab hydraulic tipping system consists of a multi stage cylinder (1) with non return valve (2). The non return valve is connected via a restrictor (4) to the control valve (5) and a manual pump (8). Fluid returns to the container (10) from the control valve. An additional feed pipe (6) is provided between the non return valve and control (5). The control valve connects the manual pump (8) with the non return valve (2) via the additional feed pipe (6) when moved into the cab normal position. This permits fluid to flow from the multi stage cylinder (1) back to the tank (10). The non return valve relief pressure pipe (6) and the fluid return pipe are connected by a jet (17) built into the control valve.