The invention discloses a terminal removing type moment limiting valve and a hydraulic-control moment limiting system with the same. A moment limiting unloading valve and a moment limiting control valve are included. A control oil opening of the moment limiting unloading valve is communicated with a control oil opening of the moment limiting control valve. A first oil opening of the moment limiting unloading valve and a second oil opening of the moment limiting unloading valve are communicated with a first amplitude variation oil cylinder through single-way balance valves. A third oil opening of the moment limiting unloading valve and a fourth oil opening of the moment limiting unloading valve are communicated with a second amplitude variation oil cylinder through first double-way balance valves. A fifth oil opening of the moment limiting unloading valve is communicated with a telescopic oil cylinder through a second double-way balance valve. A first oil opening of the moment limiting control valve is communicated with a rodless cavity of the first amplitude variation oil cylinder. A second oil opening of the moment limiting control valve is communicated with a cavity with a rod of the first amplitude variation oil cylinder. The terminal removing type moment limiting valve and the hydraulic-control moment limiting system with the same have the advantages that a moment limiting unloading part can limit five actions, five groups of single-way valves and a hydraulic-control single-way valve form a main oil way together, flow capacity is high, oil ways are independent, and interference is avoided.
Terminal removing type moment limiting valve and hydraulic-control moment limiting system with the same
19.08.2015
Patent
Elektronische Ressource
Englisch
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