Emergency hydraulic system
A hydraulic system and hydraulic technology, applied in the field of cranes, can solve problems such as insufficient brake opening, reduced braking force, winch brake vibration, etc., and achieve the effect of safety in the emergency operation process
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] like Figure 1-Figure 3 As shown, an emergency hydraulic system includes a hydraulic control system. The hydraulic control system includes a hydraulic main system 21 and a hydraulic emergency system 22. The hydraulic main system 21 includes a winch 211, a hydraulic brake 212, a hydraulic motor 213, a shuttle valve 214, and a balance valve. 215, the first reversing valve 216, the second reversing valve 217, the first ball valve 2181, the AWA port of the lifting oil circuit, the AWB port of the descending oil circuit, the oil tank port 210 and the EMP port of the brake oil circuit.
[0029] The AWA port of the lifting oil circuit is connected to the oil inlet port of the balance valve 215, and the oil outlet port of the balance valve 215 is connected to one end of the hydraulic motor 213, and the AWB port of the descending oil ci...
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