KR101764861B1 - Magnetic levitation train having active damper - Google Patents

Magnetic levitation train having active damper Download PDF

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Publication number
KR101764861B1
KR101764861B1 KR1020150148197A KR20150148197A KR101764861B1 KR 101764861 B1 KR101764861 B1 KR 101764861B1 KR 1020150148197 A KR1020150148197 A KR 1020150148197A KR 20150148197 A KR20150148197 A KR 20150148197A KR 101764861 B1 KR101764861 B1 KR 101764861B1
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KR
South Korea
Prior art keywords
valve
pressure
spring
buffer spring
magnetic levitation
Prior art date
Application number
KR1020150148197A
Other languages
Korean (ko)
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KR20170047743A (en
Inventor
하창완
한형석
박도영
김동성
김봉섭
이종민
김창현
임재원
Original Assignee
한국기계연구원
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Priority to KR1020150148197A priority Critical patent/KR101764861B1/en
Publication of KR20170047743A publication Critical patent/KR20170047743A/en
Application granted granted Critical
Publication of KR101764861B1 publication Critical patent/KR101764861B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00—Other railway systems
    • B61B13/08—Sliding or levitation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • B60L13/04—Magnetic suspension or levitation for vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/04—Bolster supports or mountings
    • B61F5/10—Bolster supports or mountings incorporating fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G11/00—Buffers
    • B61G11/12—Buffers with fluid springs or shock-absorbers; Combinations thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)

Abstract

The present invention is to provide a magnetic levitation train having an active buffer spring capable of stably carrying out a magnetic levitation run and actively controlling the distance between the bogie and the view frame.
A magnetic levitation train having an active buffer spring according to an aspect of the present invention includes a plurality of view frames provided with a vehicle side floating electromagnet opposing the orbit, A plurality of buffer springs provided between the viewing frames and the bogie, a valve connected to each of the buffer springs to control a pressure of the buffer spring, and a distance measuring unit for measuring a distance between the bogie and the viewing frame Sensor.

Description

[0001] MAGNETIC LEVITATION TRAIN HAVING ACTIVE DAMPER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation train, and more particularly to a magnetic levitation train having an active buffer spring.

Magnetic levitation propulsion refers to the propulsion of levitated at a constant height from the orbit using electric magnetic force. The magnetic levitation conveying apparatus includes a trajectory and a bogie that are lifted and propelled in a noncontact manner on the orbit.

The magnetic levitation system applies the attractive force or the repulsive force by the electromagnet between the bogie and the orbit to propel the bogie away from the orbit. As described above, the magnetic levitation system is driven in a non-contact state with the orbit, so that it is possible to carry out the high speed propulsion with less noise and vibration.

In the magnetic levitation method, there are a suction type using the attractive force of the magnet and a repulsive type using the repulsive force of the magnet. In addition, there are a superconducting system and a superconducting system in accordance with the principle of electromagnetism in the method of levitation of the magnetic levitation. The superconducting system has a strong magnetic force as compared with the phase transfer system, so it can increase the separation distance between the bogie and the orbit. Therefore, it is advantageous in that the burden of securing the orbit accuracy is small. However, it is difficult to actively control the magnetic force, . The phase transfer method has the advantage of increasing the ride comfort of the train because it can actively control the magnetic force.

The main force components constituting the magnetic levitation system are the levitation force, the propulsion force, and the guide force, and the levitation electromagnet is responsible for the levitation force and the guidance force, and the linear motor is responsible for the propulsive force.

In the case of a magnetic levitation train, which is a large magnetic levitation system, the left and right view frames are independently controlled using a tie beam. On the other hand, in the case of a small magnetic levitation system, it has the structure of a simple upper plate and a view frame combined with a simple rigid structure by applying a tie beam as in a magnetic levitation train.

It is an object of the present invention to provide a magnetic levitation train having an active buffer spring capable of stably carrying out magnetic levitation travel and actively controlling the distance between the bogie and the view frame.

A magnetic levitation train having an active buffer spring according to an embodiment of the present invention includes a plurality of view frames provided with a vehicle-side floating electromagnet opposed to the orbit, A plurality of buffer springs provided between the view frames and the bogie, a valve connected to each of the buffer springs to control a pressure of the buffer springs, and an interval between the bogie and the view frame And a distance measuring sensor.

The buffer spring may be a hydraulic spring or a pneumatic spring.

The buffer spring may be connected to a pressure tank in which air or a fluid is stored. The buffer spring may be connected to the pressure tank through a pressure control pipe, and the valve may be connected to the pressure control pipe.

The magnetic levitation train has a buffer spring to which a pressure reducing pipe connected to atmospheric pressure is connected.

The valve may be a throttle valve, and an actuator for controlling opening and closing of the valve may be connected to the valve, and the actuator may be connected to the distance measuring sensor.

The distance measuring sensor may be a laser sensor, a gap sensor, or the like.

Further, the valve may be provided at a portion where the pressure reducing pipe and the pressure adjusting pipe meet, and the valve may be a three-way valve.

The valve may include a first valve member installed in the pressure control pipe and a second valve member installed in the pressure reducing pipe.

As described above, the magnetic levitation train according to the embodiment of the present invention controls the opening and closing of the valve by using the actuator, so that the magnetic levitation traveling can be stably performed, and the gap between the bogie and the view frame can be actively controlled .

FIG. 1 is a cross-sectional view of a magnetic levitation system according to a first embodiment of the present invention, taken along a width direction.
2 is a perspective view showing a view frame and a buffer spring according to a first embodiment of the present invention.
3 is a schematic diagram showing a buffer spring system of a magnetic levitation train according to a first embodiment of the present invention.
4 is a schematic view showing a buffer spring system of a magnetic levitation train according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 1 is a cross-sectional view of a magnetic levitation system according to a first embodiment of the present invention, which is cut in a width direction, and FIG. 2 is a perspective view showing a view frame and a buffer spring according to a first embodiment of the present invention.

1 and 2, the magnetic levitation system 100 according to the present embodiment includes a magnetic levitation train 110 and an orbit 120 on which the magnetic levitation train 110 moves.

The magnetic levitation train 110 according to the present embodiment is placed on the trajectory 120 or propelled from the trajectory 120 to propel it. The orbit 120 is formed in a long direction in one direction and includes a girder 122 formed on the upper part and a column 121 disposed below the girder 122 and supporting the girder 122 from the ground. A lifting ferromagnetic plate 127 is fixedly mounted on the lower surface of the girder 122 and protrusions protruding downward are formed at both edges of the lifting ferromagnetic plate 127. The projections are arranged to face the projections formed on the core 114a of the vehicle side floating electromagnet 114 described below. A propelling ferromagnetic plate 172 is provided on the upper surface of the girder 122. The propelling ferromagnetic plate 172 is disposed opposite to the vehicle side propelling electromagnet 160.

The maglev train 110 includes a bogie 150 and a viewing frame 112 disposed beneath the bogie 150 and four viewing frames 112 support the bogie below the bogie 150. A bracket 113 protruding toward the facing view frame 112 is provided in the view frame 112. The vehicle side floating electromagnet 114 is installed on the bracket 113 so as to face the floating use ferromagnetic plate 127 .

The vehicle side floating electromagnet 114 includes a core 114a and a coil 114b installed to surround the outer circumference of the core 114a. The core 114a has a structure in which two projections are spaced apart with a groove therebetween, and a coil is wound around the projections. The vehicle side floating electromagnet 114 faces the ferromagnetic plate 127 for floating and the vehicle side floating electromagnet 114 pulls the floating type ferromagnetic plate 127 and a levitation force is generated. The present invention is not limited to this, and the vehicle-side floating electromagnet 114 may be located on the top, and the floating-use ferromagnetic plate 127 may be positioned below And may be made in a repulsive manner.

A protrusion 112a protruding toward the facing viewing frame 112 is formed on the upper portion of the view frame 112 and the vehicle side propelling electromagnet 160 is fixedly mounted on a lower surface of the protrusion 112. [

A plurality of projections 163 are formed in the vehicle-side propelling electromagnet 160 in a longitudinal direction of the track 120 and coils 165 are inserted into grooves between the projections. Three coils 165 are provided and three coils 165 are alternately inserted into the grooves.

Since the vehicle side propelling electromagnet 160 is installed to face the ferromagnetic plate 172, when the vehicle side propelling electromagnet 160 moves, a magnetic flux moving in time and space is generated, and an eddy current is generated in the ferromagnetic plate 172. The interaction between the eddy currents and the air magnetic flux is represented by Lorentz's force equation. When a linear induction motor is used as in the present embodiment, a plate-shaped conductor plate can be provided on the upper surface of the track on a track, thereby freeing the design of the track. In addition, it is possible to control the same as the alternator, and it is easy to generate large-output atmospheric power and it is easy to maintain.

On the other hand, a guide roller 118 is provided on the inner side surface of the view frame 112 to abut the side surface of the girder 122. The guide roller 118 supports the magnetic levitation train 110 to prevent the levitation train 110 from swaying in the lateral direction.

3 is a schematic diagram showing a buffer spring system of a magnetic levitation train according to a first embodiment of the present invention.

2 and 3, a plurality of cushioning springs 130 are provided between the view frame 112 and the carriage 150. The cushioning spring 130 serves to reduce the vibration generated in the view frame 112 and the vibration in the vertical direction. The buffer springs 130 may be air springs or hydraulic springs. Each buffer springs 130 is provided with a valve 140 for controlling the pressure of the buffer springs 130.

The buffer spring 130 is connected to a pressure tank 151 in which air or fluid is stored. The buffer spring 130 and the pressure tank 151 are connected through a pressure control pipe 155. The pressure control pipe 155 is connected to a pressure reducing pipe 153 connected to the atmospheric pressure Patm and the pressure reducing pipe 153 may be connected to the atmosphere or to a fluid reservoir at atmospheric pressure. Since the pressure Pspr of the cushion spring 130 is lower than the pressure Ptan of the pressure tank 151, when the cushion spring 130 and the pressure tank 151 are connected, the rigidity of the cushion spring 130 increases, The distance between the carriage 112 and the carriage 150 increases.

The valve 140 is installed at a portion where the pressure control pipe 155 and the pressure reducing pipe 153 meet and the valve 140 not only controls the opening and closing of the pressure control pipe 155, Way valve that can control the connection between the pressure reducing pipe 153 and the pressure reducing pipe 153. [ The valve 140 may be a throttle valve.

An actuator 145 for controlling the opening and closing of the valve 140 is connected to the valve 140. An actuator 145 may be installed in the valve 140. Actuator 145 may be a hydraulic or pneumatic actuator.

As shown in FIG. 1, a distance measuring sensor 152 for measuring an interval between the bogie 150 and the view frame 112 is installed on the bogie 150. The distance measuring sensor 152 may be an optical sensor or a laser sensor. The distance measuring sensor 152 is connected to the actuator 145 to transmit the measured distance information to the actuator 145. Accordingly, the actuator 145 can automatically control the valve 140 according to the distance between the view frame 112 and the carriage 150.

On the other hand, the driver can control opening and closing of the valve 140 using the actuator 145, and the driver can control the vehicle in parallel or obliquely using the actuator 145. Whereby the bogie 150 can be controlled to minimize rolling and pitch. In addition, since the reference interval of each view frame and the bogie can be changed by the driver differently, a tilting train can be realized.

Hereinafter, a magnetic levitation train according to a second embodiment of the present invention will be described with reference to FIG. 4 is a schematic view showing a buffer spring system of a magnetic levitation train according to a second embodiment of the present invention.

Referring to FIG. 4, the magnetic levitation train according to the second embodiment is provided with a buffer spring 130 having a hydraulic pressure or a high pressure for reducing the vibration between the view frame and the carriage.

The buffer springs 130 may be air springs or hydraulic springs. The buffer springs 130 are connected to a pressure tank 151 in which air or fluid is stored. The buffer spring 130 and the pressure tank 151 are connected through the pressure control pipe 155 and the pressure control pipe 155 is connected to the pressure reducing pipe 153 connected to the atmospheric pressure. Here, the pressure Pspr of the buffer spring 130 is lower than the pressure Ptan of the pressure tank 151 and higher than the atmospheric pressure Patm.

The buffer spring 130 is provided with a valve 180 for controlling the pressure of the buffer spring 130. The valve 180 is connected to the first valve member 181 provided on the pressure control pipe 155 and the pressure- And a second valve member 182 installed therein. The first valve member 181 and the second valve member 182 may be formed of a throttle valve.

The first valve member 181 is connected to the first actuator 183 for controlling the opening and closing of the first valve member 181 and the second valve member 182 is controlled to open and close the second valve member 182 A second actuator 184 is connected. Accordingly, by opening the first valve member 181 and closing the second valve member 182, the interval between the bogie and the view frame can be increased. When the first valve member 181 is closed and the second valve member 182 is opened, the interval between the bogie and the view frame can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. And it goes without saying that they belong to the scope of the present invention.

100: Magnetic levitation system 110: Maglev train
112: view frame 112a: projection
113: Bracket 114: Vehicle side floating electromagnet
114a: core 114b: coil
118: guide roller 120: orbit
121: column 122: girder
127: floating-use ferromagnetic plate 130: buffer spring
140, 180: valve 145: actuator
150: Bogie 151: Pressure tank
152: distance measuring sensor 153: pressure reducing pipe
155: pressure regulating tube 160: vehicle side propelling electromagnet
163: projection 165: coil
172: ferromagnetic plate 181: first valve member
182: second valve member 183: first actuator
184: Second actuator

Claims (9)

Claims 1. A magnetic levitation train which floats and moves with respect to an orbit,
A plurality of view frames provided with vehicle-side floating electromagnets opposed to the trajectory;
A bogie installed on the viewing frame;
A plurality of buffer springs disposed between the viewing frames and the bogie;
Valves for connecting the buffer springs to control the pressure of the buffer springs; And
A distance measuring sensor for measuring an interval between the bogie and the viewing frame;
/ RTI >
The buffer spring is connected to a pressure tank in which air or a fluid is stored,
The buffer spring is connected to the pressure tank through a pressure control pipe,
Wherein the valve is connected to the pressure control pipe,
An actuator for controlling the opening and closing of the valve is connected to the valve,
Wherein the actuator has an active cushion spring connected to the distance measuring sensor and the driver.
The method according to claim 1,
Wherein the buffer spring comprises an active cushion spring consisting of a hydraulic spring or a pneumatic spring. delete 3. The method of claim 2,
Wherein the pressure regulating tube has an active buffer spring having a pressure reducing pipe connected to atmospheric pressure connected thereto.
5. The method of claim 4,
Said valve having an active cushion spring comprised of a throttle valve. delete 6. The method of claim 5,
The distance measuring sensor is an electromagnetic levitation train having an active buffer spring formed of a laser sensor.
8. The method of claim 7,
Wherein the valve is provided at a portion where the pressure reducing pipe and the pressure adjusting pipe meet, and the valve has an active buffer spring composed of a three-way valve.
8. The method of claim 7,
Wherein the valve includes an active cushion spring including a first valve member provided on the pressure control pipe and a second valve member provided on the pressure reducing pipe.
KR1020150148197A 2015-10-23 2015-10-23 Magnetic levitation train having active damper KR101764861B1 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109131369B (en) * 2018-07-02 2023-08-29 西南交通大学 Suspension type high-temperature superconductive magnetic levitation traffic system
USD890662S1 (en) 2018-12-20 2020-07-21 Samsung Electronics Co., Ltd. Dashboard for vehicle
CN110323970B (en) * 2019-08-08 2024-08-23 广东电网有限责任公司 Power line suspension cabin
CN113251980B (en) * 2021-06-23 2021-11-02 湖南磁浮技术研究中心有限公司 Magnetic suspension train sensor error calibration method, device, equipment and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316641A (en) * 2001-04-19 2002-10-29 Hitachi Ltd Vehicle body inclination control device for rolling stock
KR100933671B1 (en) * 2008-09-23 2009-12-23 현대로템 주식회사 Apparatus for controlling air spring of urban transit maglev

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316641A (en) * 2001-04-19 2002-10-29 Hitachi Ltd Vehicle body inclination control device for rolling stock
KR100933671B1 (en) * 2008-09-23 2009-12-23 현대로템 주식회사 Apparatus for controlling air spring of urban transit maglev

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