Vehicle engine test bench foundation

Abstract

The invention discloses a vehicle engine test bed foundation. The vehicle engine test bed foundation comprises a concrete foundation platform, a supporting pier for supporting the concrete foundation platform and a prefabricated steel frame for fixing the concrete foundation platform, wherein a pre-buried steel plate is arranged at the top of the supporting pier; a vibration isolation unit is further arranged between the supporting pier and the concrete foundation platform; the concrete foundation platform is divided into an engine car mounting region and a dynamometer mounting region; the concrete foundation platform in the engine car mounting region is further provided with a pre-buried supporting frame for supporting the engine car; the pre-buried supporting frame comprises a prefabricated steel platform and prefabricated steel platform supporting legs with adjustable height. The vehicle engine test bed foundation disclosed by the invention can effectively reduce rotary vibration under a high-speed operation state of the vehicle engine, reduces disturbing force in the vertical direction and the horizontal direction, and enables the whole engine test bed foundation to effectively and reasonably level and damp vibration.

Description

technical field [0001] The invention belongs to the field of engine test bench foundations, in particular to a vehicle engine test bench foundation. Background technique [0002] The vehicle engine test bench is the key facility of the engine test room. The vehicle engine is a typical crank-link mechanism. The characteristics of the vibration of the test bench are: the rotary vibration around the rotation axis is the main vibration type, and the vertical and horizontal disturbances will also produce relatively large vibrations. Therefore, choosing an appropriate vibration isolation method can effectively reduce the rotary vibration under high-speed operation and reduce the disturbance force in the horizontal direction, which can make the vibration isolation effect more obvious and the test operation more reliable and reasonable. According to the working characteristics of the engine, the vibration isolation method of the test bench usually adopts the support installation me...

AI Technical Summary

Problems solved by technology

The installation flatness of these two types of bench foundations can meet the general bench test requirements, but for high-precision test benches with high flatness requirements and small allowable vibration values, these two types of benches are difficult. fulfil requirements

In addition, the above two types of bench foundations are more difficult to adjust the vertical amplitude of the bench during the high-speed engine test process, and are more likely to generate resonance, which also has a great impact on the accuracy of the test data

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