The reason for the natural gas break-off valve analysis is that at the moment when the profiled tool post guide descends into place, the tool post is subject to an impact force F 'as a whole. After the force is resolved, a horizontal thrust force F'1 acts on the longitudinal cylinder piston rod. At the same time, the solenoid valve 34E1-25B works, the longitudinal oil cylinder has a rod cavity to connect the pressure oil, and the rodless cavity connects to the oil return path of the speed regulating valve. The piston has a rod cavity. The force F is completed by two parts, one is F'1, the other is One is F1 = A1P1, where A1 is the bearing area of the rodless cavity, then F = F'1 + F1. Under normal circumstances, the piston begins to move to the rodless cavity under the effect of force F. Due to the incompressibility of the hydraulic oil, the pressure of the hydraulic oil in the rodless cavity suddenly rises to form back pressure on the piston. Set the speed to move smoothly. At this instant, due to the effect of% F'1, the pressure P2 in the longitudinal cylinder cavity will be greater than P1.
Normal and regular maintenance is based on prevention, and correction or repair is given before damage or failure. Careful inspection and maintenance can save costs, avoiding larger problems and causing costly repairs. Secondly, the hydraulic lifting platform is driven by electric power and the hydraulic system is lifted. In order to avoid irregular operations during operation, the lifting platform can work normally and orderly to achieve the ideal unloading level. Once again, check every week, whether the connections of the lifting platform are tightened every week, whether the seal ring is damaged or invalid, whether the hydraulic oil is lacking, and whether the oil cylinder is leaking are the key issues to check. You need to clean it once a week for lifting Racks, shears, lines, and oil tanks to prevent dust and debris from affecting normal work. Then, for the replacement of hydraulic oil, replace it once in March, if it is not used frequently, it can be replaced once a year.
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