Full-degree of freedom track simulator

Abstract

The invention discloses a full-degree of freedom track simulator. The full-degree of freedom track simulator comprises four four-degree of freedom vibration rolling tables with the same structures, which are respectively a first vibration rolling table, a second vibration rolling table, a third vibration rolling table and a fourth vibration rolling table, wherein the first vibration rolling table and the second vibration rolling table are arranged symmetrically with the third vibration rolling table and the fourth vibration rolling table along a y-axis direction; the second vibration rolling table and the third vibration rolling table are arranged symmetrically with the first vibration rolling table and the fourth vibration rolling table along an x-axis direction; the first vibration rolling table or the second vibration rolling table or the third vibration rolling table or the fourth vibration rolling table is composed of a lower four-degree of freedom vibration platform, an upper rolling device and an external driving device; the lower four-degree of freedom vibration platform mainly comprises four vertical actuators, a basic platform, a wheelbase adjustable platform, a track gauge adjustable platform, two lateral actuators and a longitudinal actuator; the upper rolling device comprises a roller, a roller shaft, a bearing and a bearing heightened support; and the external driving device comprises a variable-speed motor, a speed reducer, a distance-adjustable flat plate base and a universal coupling.

Description

technical field [0001] The invention relates to the field of vehicle dynamic simulation and testing. Background technique [0002] my country has established the State Key Laboratory of Traction Power in Southwest Jiaotong University, and developed a rolling vibration test bench for rolling stock by itself. The test bench was built in 1994 and put into operation in 1995, playing an important role in the research and development of my country's railway speed-up locomotives. The rolling vibration test bench takes the locomotive as the test object and simulates the track conditions through the test bench, so it is also called the track simulator. Vibration is used to simulate the irregularity of the line track. The rollers of the rolling vibration test bench can simulate gauge changes and direction irregularities; simulate horizontal and vertical irregularities; It is impossible to realize the vertical, lateral and tilting motion of a single roller. Therefore, it is impossib...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems in the prior art that the rolling of the rollers and track irregularities such as track gauge, track direction, height, level, twist (triangular pit) and indoor dynamic simulation of various track lines cannot be realized at the same time. An indoor full-degree-of-freedom track simulator that is more in line with the actual train track shape and irregularities

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