A high frequency hydraulic exciter

Abstract

The invention provides a high-frequency hydraulic vibration exciter. Hydraulic vibrator consists of valve body, valve core, safety cover, drive shaft and electromechanical converter. There is a convex shoulder on the valve core, and there are 2 groups of 8 axial oil grooves uniformly distributed on it. The axial oil groove is periodic and the 2 groups on the valve body have a total of 8 radial oil holes. Periodic on-off of oil holes. Two groups of radial oil holes on the valve body, one group communicates with the high pressure oil passage, and the other group communicates with the low pressure oil passage. When the valve core rotates under the drive of the electromechanical converter and the transmission shaft, the pressure on the left and right end faces of the valve core shoulder passes through the radial oil holes on the valve body and the axial oil groove on the valve core to alternate high and low pressure, thereby driving the valve core shaft. To reciprocate, to achieve high-frequency vibration. The main feature of the invention is that the axial movement frequency of the valve core is high, the movement frequency is automatically controlled by the electromechanical converter, and the structure is compact. The present invention can be used as an executive element in occasions with high requirements on working frequency, such as hydraulic vibration.

Description

Technical field [0001] The present invention involves a high -frequency hydraulic excimer, which is a hydraulic element technology field. Background technique [0002] Vibration measurement and vibration experiment analysis are widely used in mechanical engineering and engineering structure departments, such as vibration transmission, vibration sieve, vibration mixer, mechanical hammer, and so on. The commonly used exciteomers are three types: electric, electromagnetic and electrical. The advantages of electrical hydraulic excitement are high and the itinerary is large. Because the power of the electrical hydraulic vibrator is large, the vibration equipment can achieve miniaturization and lightweight, so it is more suitable for mobile equipment than mechanical and electromagnetic vibrations. In recent years, hydraulic excitement technology has developed rapidly, but the energy consumption of hydraulic excitement equipment and low efficiency. In addition to the two energy conversi...

AI Technical Summary

Problems solved by technology

In recent years, hydraulic vibration technology has developed rapidly, but hydraulic vibration equipment consumes a lot of energy and has low efficiency. In addition to the two energy conversions of mechanical energy and pressure energy, most of the existing hydraulic vibration equipment is controlled by hydraulic reversing valves. Working in the mode of hydraulic cylinder, this is essentially a throttling and speed regulating circuit, which is a high energy consumption system

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