Lifting valve special for self-unloaded vehicle packing box

• Main Authors: KE SHOUQIAN, YANG GANG, KE YOUMIN, PU HAIQUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.09.2011
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The invention relates to a lifting valve special for a self-unloaded vehicle packing box, which comprises a valve body and a valve bore, wherein the valve body is provided with an oil inlet chamber, an oil returning chamber, an oil outlet chamber, a gas chamber, a gas chamber inlet, an oil inlet, an oil returning port, an oil outlet, a first valve port, a second valve port, an overflow valve, a first resetting spring and a second resetting spring; the valve core is a first valve core unit and a second valve core unit; the gas chamber is a first gas chamber unit and a second gas chamber unit; the gas chamber inlet is a first gas chamber inlet unit and a second gas chamber inlet unit; one end of the first valve core unit forms a first gas chamber piston; and one end of the second valve coreunit forms a second gas chamber piston. The lifting valve is characterized in that: a composite one-way valve is arranged between the oil inlet chamber and the oil outlet chamber; the composite one-way valve consists of a fir