WO2019114395A1

WO2019114395A1 - Sub-vacuum maglev supersonic train model experimental platform

Info

Publication number: WO2019114395A1
Application number: PCT/CN2018/109979
Authority: WO
Inventors: 申文静; 尹澍; 顾泽植
Original assignee: 深圳技术大学
Priority date: 2017-12-15
Filing date: 2018-10-12
Publication date: 2019-06-20
Also published as: CN108053738A; DE212018000108U1

Abstract

A sub-vacuum maglev supersonic train model experimental platform for additionally providing an inverted U-shaped excitation cover on the present high-speed rail track, comprising a train model shell (4), wheels (5), a rail track (6), and permanent magnet strips (301, 302) mounted in the train model. The externally additionally provided inverted U-shaped excitation covers (101, 102, 103, 104, …, 10N) are combined with the existing subgrade dado (13) of the rail track (6) to establish the closed sub-vacuum pipeline, and the train model moves at high speed in the pipeline. Pulse current modules (201, 202, 203, 204, …, 20N) are respectively electrically connected to inverted U-shaped excitation coils (12) in sequence. The excitation pulse phase sequence and electric energy transmission of a photoelectric detection system (7), a speed servo control unit (10), and a charging and energy storage device (9) are controlled by a train operation control system so as to change the alternating magnetic field and control the train model to operate in a speed-up or slow-down mode. The train model still depends on magnetic levitation as the power in the speed-up mode to realize frictionless low-air-resistance and supersonic operation, and the train model naturally falls due to the gravity in the slow-down mode, the wheels are in contact with the rail track, and mechanical braking is realized so as to realize stopping or safe parking.

Description

[Name of invention made by ISA according to Rule 37.2] A sub-vacuum magnetic suspension supersonic train model experimental platform

Technical field

The invention relates to a new supersonic train model experimental platform, in particular to a sub-vacuum pipeline built on the existing high-speed rail track on both sides and equipped with an anti-U-type excitation cover group, with magnetic suspension as power and rail as safety. A low-speed supersonic high-speed train model with a low air resistance.

Background technique

At present, the speed of two kinds of trains is constantly increasing. One is a high-speed wheel-rail train that uses a high-voltage electric drive motor to drive the wheels on the track. The speed can reach 400Km/h, and the brakes are stable and safe, but the wheels Sweeping force, especially the track contact friction and air resistance will seriously hinder the increase of its speed; the other is a magnetic levitation high-speed train with magnetic suspension as the power and no (orbital) contact friction. Because there is no mechanical friction, the speed is coming. The faster, from 200-600Km/h, it has reached 4000Km/h under vacuum. However, the biggest shortcoming of the maglev train is its advantage. It is because there is no track friction and it can not form a mechanical brake. Once the power is cut off, it will cause a big accident of car crash and low safety and reliability; thus limiting its further promotion. application. Although the magnetic levitation is superior to the high-speed train in speed, the development of the high-speed wheel-rail train is far better than the magnetic levitation at this stage. The reason is that the biggest advantage of the high-speed wheel-rail train is that it is compatible with the existing track, and the maglev train cannot. Upgrading on existing tracks, its cost per kilometer is more than twice that of high-speed train tracks, enough to offset its technical advantages.

At present, the relevant laboratory has built the experimental platform for the high-speed train model and the experimental platform for the maglev train model. However, the topics and experimental research in the two fields are irrelevant and different, and the advanced technologies in their respective fields are incompatible and cannot complement each other. .

technical problem

The object of the present invention is to provide a sub-vacuum pipe by constructing a roadbed wall skirt on both sides of the existing high-speed rail and installing an anti-U-type excitation cover, and using magnetic suspension as a power to realize a frictionless small wind resistance supersonic operation in the pipeline, and at the same time The platform model and the wheel of the existing high-speed rail technology are used to realize the mechanical braking, smooth and safe train model experimental platform.

Technical solution

The technical scheme of the invention comprises: constructing a roadbed wall skirt on both sides of the current high-speed rail track and adding an anti-U-type excitation cover to form a sub-vacuum magnetic suspension supersonic train model experimental platform. It includes: a car shell, a wheel mounted under the car mold and its contact track; a roadbed skirt on both sides of the high-speed rail and combined with an anti-U-type excitation cover into a sub-vacuum pipe; two pieces mounted in the car mold are flat and The permanent magnet strips of opposite polarity are combined with the iron cores of the anti-U-type excitation coils mounted on the two sides and the top of the upper part of the vehicle to form a closed-loop magnetic circuit; external series and series U-type excitation coils are connected to a series of pulse current modules. The grating installed in the lower part of the car model and the numerical control center corresponding to the series photoelectric detection system provide the measurement and control signals; the speed control unit receives the signal provided by the numerical control center, and issues an instruction to the pulse current module to accelerate or decelerate; the charging energy storage device provides sufficient pulse current module The high current.

Beneficial effect

The invention has the beneficial effects that the invention is provided with an anti-U-type excitation cover on the current high-speed railway track and combined with a sub-wall skirt to form a sub-vacuum pipe, combining the advantages of the magnetic levitation and the high-speed wheel-rail train into one, forming a brand-new The supersonic train model has its beneficial effects in four aspects: 1. The magnetic ring has a good closed circuit effect, and can form a larger range of magnetic fields than a linear motor, with higher electromagnetic conversion rate and greater electromagnetic attraction; The non-destructive transformation on the current track is far less costly than the re-laying of the magnetic levitation track and the linear motor. 3. The anti-U-type excitation cover and the track form a closed circuit to form a sub-vacuum state, and the train can run under low air resistance. Compared with linear motor and motor car motor, it has technical advantages. 4. It fully utilizes the magnetic suspension without friction and low air resistance to achieve high speed. At the same time, it realizes safety by means of the braking characteristics of the wheel and track of high-speed rail-wheel train. Parking. That is to say, when the train of the invention is at a high speed, the wheel is suspended from the rail and is in a magnetic suspension state without friction and high speed operation; when the station or accident is stopped, the train is running at a low speed, and the wheel naturally falls on the track to operate and brake, thereby achieving safe parking, naturally One.

DRAWINGS

The present invention will be further described below with reference to the accompanying drawings.

Figure 1. Main view of the invention

Figure 2. Figure 1 A-A partial cross-sectional top view

Figure 3. Right side view of the present invention

In the figure: 101, 102, 103, 104~10N anti-U type excitation cover (series)

201, 202, 203, 204 ~ 20N pulse current module (series),

301, 302 permanent magnet strips, 4, car shell, 5, wheels, 6, track, 7, photoelectric detection system, 8, data center console, 9, charging energy storage device, 10, speed control unit, 11, Anti-U-type excitation core (series), 12, anti-U-type excitation coil (series), 13, roadbed skirt, 14, detection grating (series).

Embodiments of the invention

In Fig. 1, Fig. 2, Fig. 3, one anti-U-type excitation cover (series) (101), (102), (103), (104) to (10N) are combined with the roadbed skirt (13) to form a Can be pumped into a sub-vacuum pipe, covering the car shell (4), wheel (5), rail (6) and detection grating (series) (14); there are two horizontal settings in the car shell (4) The permanent magnet strips (301) and (302) having opposite polarities are opposite to each other and are combined with the anti-U-type exciting core (series) (11) in the anti-U-type exciting coil (series) (12). One closed corresponding magnetic pole, the gap between two pairs of magnetic poles is the space for the maglev train movement; external: pulse current module (series) (201) (202) (203) (204 ~ 20N) through the wire and the anti-U-type excitation coil (series (12) connected separately; the data center console (8) is connected to the charging energy storage device (9), the speed control unit (10), the photoelectric detection system (7), and the command pulse current module (series) (201~) 20N) Provides an accelerated forward pulse to the anti-U-type excitation coil (series) (12) (Or provide a reverse pulse of deceleration), when the car model reaches a certain speed, it can rely on the electromagnetic suspension force to advance forward, at this time the wheel (5) is off track (6), achieving high-speed frictionless operation, when arriving at the station or occurs In the event of an accident, the car model naturally falls due to gravity, and the wheel (5) is in contact with the track (6), relying on mechanical brakes to achieve stop or safe parking.

Claims

The sub-vacuum magnetic suspension supersonic train model experimental platform equipped with an anti-U-type excitation cover on the current high-speed train track, including the model shell, the anti-U-type excitation cover (series), the anti-U-type excitation coil (series), the anti-U Excitation magnet core (series), permanent magnet bar in car model, wheel, track, subgrade wall skirt, photoelectric detection system, characterized by: anti-U-type excitation cover series connected, and combined with existing subgrade wall skirt can be built into Asia The vacuum pipe, the car model and the track are arranged inside the closed pipe, and the permanent magnet bar is arranged in the car mold.
The brand new supersonic train model experimental platform according to claim 1, characterized in that: in the high-speed operation, the magnetic suspension is used as the power, and the suspension is operated without friction; in the low-speed operation, the vehicle model naturally hangs due to gravity, and the wheel is tracked. , relying on mechanical braking, parked.