Servo motor driven driving system model train speed increasing device

Abstract

The invention discloses a model train speed-increasing device driven by a servo motor. The whole device includes a test section and a motor acceleration section. The test section is set according to different test contents. The motor acceleration section is composed of a servo motor drive system and an acceleration guidance system. , connecting track system, adjustable supporting steel frame system, etc., is characterized in that, during the test process, the high-speed model train passes through the motor acceleration section before the earthquake simulation shaking table array test section, and the motor acceleration section passes through the acceleration motor It provides the main stage power and drives the synchronous belt system for the main stage power transmission, so as to realize the rapid acceleration of the model train in a short distance. The entire test device provides a safe and reliable train speed-increasing scheme and technical support for the test research of high-speed trains running on bridges under earthquakes.

Description

technical field [0001] The invention relates to a speed-up device for a model train, in particular to a speed-up device for a model train driven by a servo motor. Background technique [0002] Statistics show that by the end of 2018, my country's railway operating mileage reached 131,000 kilometers, including 29,000 kilometers of high-speed rail, accounting for 66.3% of the world's total mileage of high-speed rail, ranking first in the world. However, the construction and operation of high-speed railways in my country are also facing many challenges and dangers, such as complex geology, changing climate, prominent durability and time-dependent behavior, and dynamic effects such as wind and earthquakes all bring dangers to the construction and operation of high-speed railways. The potential hazard of seismic action is cause for concern. my country is located in the circum-Pacific seismic zone and is an earthquake-prone country with frequent seismic activities. In the past de...

AI Technical Summary

Problems solved by technology

(1) How to efficiently and safely launch the acceleration test model vehicle over a short distance? Because the test model train has the characteristics of large mass and high speed, the kinetic energy contained in it is extremely large. For example, the scale ratio of 1:10 is adopted, the similarity ratio of acceleration section is selected as 1, and the similarity ratio of elastic modulus is selected as 0.5. The prototype vehicle adopts CRH380A. At this time, the mass of the model vehicle is calculated to be about 500kg, and the speed is about 20m / s. The conventional speed-up scheme needs a long enough track, but the laboratory is often limited in space, and there is not enough length to arrange the acceleration section, so it is necessary to design a short-distance and high-efficiency track. speed-up program

(2) How to launch a test model train without damage? Due to the small scale ratio of test model trains, high manufacturing precision is required, and model trains often need built-in various sensors, so the production of model trains is time-consuming and costly. If damage occurs during acceleration and testing, it will not only cause unnecessary economic At the same time, it will delay the test process, and it becomes a problem that must be solved to ensure that the well-made test model vehicles are not damaged

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