Hydraulic press abnormal high pressure solution

Due to the inevitability of start-stop hydraulic shock in real production, the working efficiency of four-column hydraulic press is seriously affected. Therefore, people should adopt adequate countermeasures to solve the problem. The essential method to prevent mania and high pressure is to set speed regulation valve in the circuit and alleviate night pressure impact.

(1) Abnormal high pressure of the hydraulic press, the speed regulating valve is set in the hydraulic circuit to prevent the high pressure circuit of the manic restless force. When cylinder 1 is interrupted, due to the inertial action, the water pressure of the master cylinder rises, and the speed regulating valve is set under it, which can only prevent mania and high pressure. High voltage circuit to prevent components from causing manic restlessness. When cylinder 2 is reduced, if the balance valve 1 has a defect and does not pose, the hydraulic cylinder side will produce a manic and restless high pressure, and the speed regulating valve 3 can only prevent such a situation. Prevents interruption of high voltage circuits from manic agitation. When the oil motor 2 controls a large air resistance load and the reversing valve 1 returns to the middle position, a large night pressure impact is generated. The brake valve 3 can discharge the compressed high pressure oil, and at the same time, the compressor lubricating oil can be sucked through the check valve from the engine cover to fill the positive space in the oil pipe on the other side to prevent the generation of air pockets.

(2) Abnormal high pressure of the hydraulic press, relieve the hydraulic impact, and apply the circuit of the retention valve to alleviate the night pressure impact. When starting, the electro-hydraulic reversing valve 1 and the electromagnetic reversing valve 2 speed control together, leaving the opening of the valve 3 slow, and the motor 5 slow posture. During the interruption, the opening delay of the residual valve 3 is closed by the electromagnetic reversing valve 2, so that the motor revolution is reduced. At this time, the electro-hydraulic reversing valve 1 is in the direction of the administration, and the motor is completely stopped. Acceleration and deceleration times are regulated by economizing facilities. Hydraulic impact mitigation can also be achieved by setting the hydraulic cylinder end buffer method and distance saving maneuvering.

To alleviate the hydraulic impact of the hydraulic press, it should be maintained according to the short-point buffer strategy of the set hydraulic cylinder and the temperature reduction control of the distance. The speed regulating valve is set in the hydraulic circuit of the hydraulic press, which is a circuit that avoids abnormal high pressure force. When the hydraulic cylinder terminates, because of the inertial action, the water pressure of the master cylinder rises, and the speed regulating valve is set under it, which can only avoid abnormal high pressure.

Trimming four-column hydraulic press