Coil loading and unloading trolley control system and control method

• Main Authors: WEI ZHIYI, LIU SONG, XU LIPU, QIAN GUANGKUO, LIU DONGQIANG
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2024
• 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 belongs to the technical field of rolling of cold rolling mills, and particularly relates to a coil loading and unloading trolley control system and method. The device comprises a pressure reducing valve, a proportional reversing valve, a pressure relay, a coil loading and unloading trolley oil cylinder, a pressure reducing valve oil drainage port pressure adjusting mechanism, an oil supply oil way, an oil return oil way, an oil drainage oil way and a controller. An oil return opening and an oil supply opening are formed in the coil feeding and discharging trolley oil cylinder, the oil supply opening is communicated with an oil supply opening P of the oil supply oil way through a pressure relay, a proportional reversing valve and a pressure reducing valve in sequence, and the oil return opening is communicated with an oil return opening T of the oil return oil way through the proportional reversing valve; the pressure reducing valve is communicated with an oil drainage port L of the oil drainage