The invention relates to a no-explosionproof valve lifting system of a crawler crane. The lifting system comprises a two-way variable pump, an oil replenishing pump and a hydraulic motor, wherein a main body of the lifting system consists of a closed loop hydraulic system, a lifting frame, an oil replenishing system, a radiating system and a control system; a main body of the closed loop hydraulic system consists of an engine, a two-way variable pump, a hydraulic motor and a detecting system; a main body of the lifting frame consists of a truss mechanism, a speed reducer, a windlass mechanism, a steel wire rope, a pulley set and a lifter; the two-way variable pump is connected with a main pump displacement control valve, an oil replenishing pump, a hydraulic motor, a buffer valve, an oil replenishing overflow valve and an overflow valve A; the oil replenishing pump is connected with a hydraulic oil filter and a brake opening electric control reversing valve; the hydraulic motor is connected with a brake; and the brake opening electric control reversing valve is connected with the buffer valve and the oil replenishing overflow valve. The lifting system has the advantages of performance reliability, safety, lifting smoothness, energy conservation and convenience for operation.
No-explosionproof valve lifting system of crawler crane
2015-11-18
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
Arm lifting device and arm lifting method for crane boom of crawler crane
Europäisches Patentamt | 2022
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