| 摘要 |
<p>A refuse collection vehicle has a pair of hoists which can be operated together to lift a larger container by means of both hoists and which can also be operated separately for the lifting of a smaller container by either hoist. The hydraulic circuit includes a respective control valve (20, 21) for each hoist. In order to operate the hoists together, the control valves (20, 21) are operated together. Respective inlets on the control valves are inter-connected by a duct (28) which includes a flow-restrictor (29) to permit the flow to one valve to be supplemented, at a relatively low rate, from the flow to the other valve.</p> |
