Wide-frequency large-displacement vibration simulation exciter suitable for road simulation of high-speed tracked vehicles

Abstract

The invention discloses a wide-frequency large-displacement vibration simulation exciter suitable for road simulation of high-speed crawler vehicles, which includes a tailstock, an oil accumulator, a cylinder body, an end cover, a gland, and a cap; It is used to provide the base and support; the cylinder is located above the tailstock, the two ends of the cylinder are connected with end covers, the front of the cylinder is equipped with a valve block and a cartridge type back pressure valve, and the inside of the cylinder is installed with An integrated piston rod; an electro-hydraulic servo valve and a plug-in pressure reducing valve are installed on the upper part of the valve block, and an oil accumulator is installed under the valve block; a gland is connected to the upper part of the integrated piston rod. The upper part of the cover is connected with the platform. The invention realizes the low-friction wide-frequency large-displacement vibration simulation of the exciter, has strong adaptability, quick response, convenient adjustment and meets the requirements of laboratory testing.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and relates to vibration simulation, in particular to a wide-frequency large-displacement vibration simulation exciter suitable for road simulation of high-speed crawler vehicles. Background technique [0002] High-speed tracked vehicles have the characteristics of strong ground adaptability and are widely used in the field of national defense. The vibration damping performance of the running system of high-speed tracked vehicles is an important guarantee for the off-road performance, comfort and stability of the upper installation platform of high-speed tracked vehicles. Vibration simulation exciter adapted to road simulation of high-speed tracked vehicles By applying vertical force to the road wheels of high-speed tracked vehicles, the displacement data of the actuators measured in the test laboratory are almost exactly the same as those under the original road conditions, which can gr...

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Problems solved by technology

[0004] The weight of high-speed tracked vehicles is as high as more than 30 tons. Under the action of the balance elbow connecting the road wheels, the actuator bears a large load force. The main problems in the prior art are as follows: the static pressure support used must be equipped with a single oil source, or the oil supply pressure is not adjustable, and the adaptability is poor; the road environment of high-speed tracked vehicles is harsh, and the vibration exciter that needs to be simulated can perform vibration simulation of broadband and large displacement. The existing shock absorber can realize high-frequency simulation, but Unable to meet the demand in terms of broadband and large displacement

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