Intelligent hydraulic frictional damping device

Abstract

The invention discloses an intelligent hydraulic frictional damping device, which comprises a hydraulic frictional damper and an integrated programmable logic controller (PLC) cabinet, wherein the hydraulic frictional damper comprises supports, a hydraulic cylinder body, a piston rod, a rubber block, a friction plate and a sensor; the hydraulic cylinder body is connected with the supports; the supports are arranged on a vibrating sieve support under a vibrating sieve supporting spring; the piston rod is arranged in the hydraulic cylinder body and can slide in the cylinder body; the rubber block is fixed at the front end of the piston rod; the friction plate is fixed on the outer side of a side plate of an industrial vibrating sieve; the sensor is arranged on the vibrating sieve support, and is connected with the integrated PLC cabinet via a data line; and the hydraulic cylinder body is connected with the integrated PLC cabinet through an oil tube via connectors. The intelligent hydraulic frictional damping device has the characteristics of high reliability, high safety, high intelligent degree, adjustable damping force, high practicality and the like, and can produce great economic benefit and social effects.

Description

technical field [0001] The invention relates to a friction damping device, in particular to an intelligent hydraulic friction damping device installed on the front, rear, left, and right outer sides of an industrial vibrating screen and controlled by PLC. Background technique [0002] The industrial vibrating screen uses the motor to drive the vibrator on the vibrating screen to generate vibration. Its vibration frequency is much higher than its own system frequency, so it works very stably, has high screening efficiency, and is widely used. However, the vibrating screen has to go through the resonance point from start to normal work, and then to stop, and it will generate resonance, which is an inevitable phenomenon, but the severity of the resonance depends on the length of time it passes through the resonance point. During the period from motor startup to normal operation, the time for the vibrating screen to pass the resonance point is short, and the impact of resonance ...

AI Technical Summary

Problems solved by technology

This method is a method of forced vibration reduction after the resonance is generated, but there are certain limitations in practical application: (1) The adjustment bolt is based on experience to adjust the damping force of the bolt, the adjustment bolt is easy to rust, and the damping force of the four friction dampers It is not easy to adjust to the ideal state; (2) When the rubber block is worn out, it often needs to be replaced manually; (3) The kinetic friction between the rubber block and the side wall of the screen box is very limited, it is difficult to achieve the required force, and only a small part is offset dynamic load

Therefore, the actual vibration reduction effect of this type of friction damper is not ideal

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