Logic oil duct control system with electromagnetic switch valves and failure autodiagnosis method

Abstract

The invention discloses a logic oil duct control system with electromagnetic switch valves and a failure autodiagnosis method. The logic oil duct control system comprises a plurality of electromagnetic switch valves, a speed regulator, one-way valves, a flow regulator, a hydraulic cylinder and an electric control unit, wherein a displacement sensor in the hydraulic cylinder, a piston cavity of the hydraulic cylinder and a pressure sensor connected to a rod cavity hydraulic circuit are respectively connected with the electric control unit through cables; the piston cavity of the hydraulic cylinder and the rod cavity hydraulic circuit are respectively connected with an oil port of each electromagnetic switch valve through the speed regulator; the piston cavity of the hydraulic cylinder and the rod cavity hydraulic circuit are respectively connected with the flow regulator and the oil port of each electromagnetic switch valve through the one-way valves; and a hydraulic circuit of a hydraulic cylinder rod cavity is connected with an oil return port through an overflow valve. The logic oil duct control system can accurately and automatically judge the failure of a certain or more electromagnetic switch valves, and the operating personnel can accurately replace the failed electromagnetic switch valve in time, thereby greatly saving the maintenance time, enhancing the maintenance efficiency and ensuring the reliable operation of equipment.

Description

technical field [0001] The invention relates to the field of oil circuit valves, in particular to a logical oil circuit control system and a fault automatic diagnosis method for an electromagnetic switch valve. Background technique [0002] Solenoid switch valves are often used for on-off control of oil in the hydraulic field. Because of its simple structure and low price, it can be widely used in hydraulic cylinder position control systems in the hydraulic field through the proper combination of multiple electromagnetic switching valves. [0003] In the existing hydraulic cylinder position control system composed of multiple electromagnetic switch valves, due to the large number of electromagnetic switch valves and the complicated hydraulic oil circuit composed of multiple electromagnetic switch valves, when one or more electromagnetic switch valves When a fault occurs, it becomes very difficult to find and eliminate the fault, which greatly increases the difficulty of mai...

AI Technical Summary

Problems solved by technology

[0003] In the existing hydraulic cylinder position control system composed of multiple electromagnetic switch valves, due to the large number of electromagnetic switch valves and the complicated hydraulic oil circuit composed of multiple electromagnetic switch valves, when one or more electromagnetic switch valves When a fault occurs, it becomes very difficult to find and eliminate the fault, which greatly increases the difficulty of maintenance and prolongs the maintenance time, which seriously affects the normal operation of the equipment

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