The invention discloses a crane counterweight synchronizing hydraulic system. In the crane counterweight synchronizing hydraulic system, a first working oil opening of a main valve is connected to a flow collecting oil opening of a flow distributing and collecting valve; a first free oil inlet and a second free oil inlet of a first bidirectional hydraulic lock are connected to a first flow distributing oil opening of the flow distributing and collecting valve and a second working oil opening of the main valve respectively; a first free oil outlet and a second free oil outlet of the first bidirectional hydraulic lock are connected to a rodless cavity and a rod cavity of a first counterweight pushing oil cylinder respectively; a first free oil inlet and a second free oil inlet of a second bidirectional hydraulic lock are connected to a second flow distributing oil opening of the flow distributing and collecting valve and the second working oil opening of the main valve respectively; a first free oil outlet and a second free oil outlet of the second bidirectional hydraulic lock are connected to a rodless cavity and a rod cavity of a second counterweight pushing oil cylinder respectively. The crane counterweight synchronizing hydraulic system can achieve a good counterweight synchronizing effect without regulation, and can avoid counterweight stalling, frequent opening and closing of the bidirectional hydraulic locks, counterweight shaking, oil cylinder screaming and other phenomena.
Crane counterweight synchronizing hydraulic system and crane
2015-04-29
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
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