Broadband large-displacement vibration simulation exciter suitable for high-speed tracked vehicle road simulation

Abstract

The invention discloses a broadband large-displacement vibration simulation vibration exciter suitable for high-speed tracked vehicle road simulation. The broadband large-displacement vibration simulation vibration exciter comprises a tailstock, an oil energy accumulator, a cylinder body, an end cover, a gland and a bearing platform. The tailstock is located on the lower portion and used for providing a base and a support. The cylinder body is located above the tailstock. The two ends of the cylinder body are connected with end covers, a valve block and a cartridge back pressure valve are installed on the front face of the cylinder body, and an integrated piston rod is installed in the cylinder body. An electro-hydraulic servo valve and a cartridge pressure reducing valve are mounted at the upper part of the valve block. An oil energy accumulator is mounted below the valve block. The upper portion of the integrated piston rod is connected with a gland, and the upper portion of the gland is connected with the bearing platform. According to the invention, low-friction broadband large-displacement vibration simulation of the vibration exciter is realized, the adaptability is strong, the response is fast, the adjustment is convenient, and the laboratory test requirements are met.

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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