KR101860886B1 - Emergency roller assembly for magnetic levitation train - Google Patents

Emergency roller assembly for magnetic levitation train Download PDF

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Publication number
KR101860886B1
KR101860886B1 KR1020150174278A KR20150174278A KR101860886B1 KR 101860886 B1 KR101860886 B1 KR 101860886B1 KR 1020150174278 A KR1020150174278 A KR 1020150174278A KR 20150174278 A KR20150174278 A KR 20150174278A KR 101860886 B1 KR101860886 B1 KR 101860886B1
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KR
South Korea
Prior art keywords
piston
emergency
spring
emergency roller
cylinder
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Application number
KR1020150174278A
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Korean (ko)
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KR20170067528A (en
Inventor
황종균
Original Assignee
주식회사 대명엔지니어링
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Priority to KR1020150174278A priority Critical patent/KR101860886B1/en
Publication of KR20170067528A publication Critical patent/KR20170067528A/en
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Publication of KR101860886B1 publication Critical patent/KR101860886B1/en

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    • 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
    • B61F13/00—Rail vehicles characterised by wheel arrangements, not otherwise provided for
    • 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
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Abstract

The present invention relates to an emergency roller assembly for a magnetic levitation train, and in particular, a cylinder includes a cylinder body, a first piston vertically installed on the cylinder body and connected to the emergency roller, And a first spring for returning the second piston, wherein the second piston is disposed on a side of the first piston, and is capable of returning the emergency roller smoothly with a simple structure And to reduce the vertical length of the cylinder, thereby maximizing the diameter of the emergency roller.

Description

[0001] Emergency roller assemblies for magnetic levitation trains [0002]

The present invention relates to an emergency roller assembly for a magnetic levitation train, and in particular, a cylinder includes a cylinder body, a first piston vertically installed on the cylinder body and connected to the emergency roller, And a first spring for returning the second piston, wherein the second piston is disposed on a side of the first piston. [0002] The present invention relates to an emergency roller assembly for a magnetic levitation train comprising a first piston, a second piston lifted and lowered, and a first spring returning the second piston.

A conventional emergency landing apparatus for a magnetic levitation train includes a plurality of skid members 100, a plurality of brackets 200, a plurality of emergency rollers 300, and a lift unit.

The plurality of emergency rollers 300 and the elevating unit elevate the magnetic levitation trains to a pair of rails 10 to save the emergency levitated magnetic levitation trains and to move the plurality of skid members 100 and the pair of rails 10 10).

The elevating portion lowers a plurality of emergency rollers (300) relative to the lower frame (30) to provide a power for raising the emergency levitated maglev train relative to the pair of rails (10). To this end, the elevating portion includes a plurality of hydraulic cylinders 410, a driver, a valve, an accumulator, and a relief valve.

The plurality of hydraulic cylinders 410 are installed on the lower frame 30 to support the plurality of emergency rollers 300 so as to be able to ascend and descend respectively. And lowered with respect to the frame 30.

The plurality of hydraulic cylinders 410 may be basically provided to raise and lower the plurality of emergency rollers 300 by hydraulic pressure and the descending of the emergency rollers 300 may be provided by hydraulic pressure, And an elastic body (not shown) such as a compression spring, which is separately provided in the body.

The drive unit includes a pump, a motor, and the like. The oil pressure is supplied to the plurality of hydraulic cylinders 410 through a plurality of hydraulic pipes connected to the plurality of hydraulic cylinders 410, .

The valve regulates the hydraulic pressure supplied through the hydraulic pipe to maintain the hydraulic pressure supplied to the plurality of hydraulic cylinders 410 or to release the hydraulic pressure. That is, the valve supplies hydraulic pressure to a plurality of hydraulic cylinders 410 to lift the unloaded magnetic levitated train from the rail 10 or to release the supply of hydraulic pressure to return the oil to the low level, So as to be seated on the rail (10).

When the valve releases the hydraulic pressure, the plurality of emergency rollers 300 can be elevated due to the elastic body of the hydraulic cylinder 410 described above.

The elastic body is connected to the piston of the hydraulic cylinder 410 in series.

On the other hand, in order to improve the running speed of the emergency rollers 300, the running speed must be satisfied by increasing the diameter of the emergency rollers 300 which are components of the emergency landing gear. The diameter of the emergency rollers 300, Is the maximum. Therefore, the conventional emergency landing device can not maximize the traveling speed of the magnetic levitation train in an emergency.

Korean Patent No. 10-1173490

SUMMARY OF THE INVENTION It is an object of the present invention to provide an emergency roller assembly for a magnetic levitation train capable of maximizing the diameter of an emergency roller by reducing the vertical length of a hydraulic cylinder.

In order to accomplish the above object, the present invention provides an emergency roller assembly for a magnetic levitation train, comprising: an emergency roller; and a cylinder for lifting and lowering the emergency roller, wherein the cylinder comprises a cylinder body and a cylinder body A first piston connected to the emergency roller; a second piston lifted and lowered according to the elevation of the first piston; and a first spring returning the second piston, wherein the second piston comprises a first piston Is disposed on the side portion of the housing.

According to the above-described emergency roller assembly for a magnetic levitation train of the present invention, the following effects can be obtained.

The cylinder includes a cylinder body, a first piston which is installed on the cylinder body so as to be able to move up and down, and which is connected to the emergency roller, a second piston which is lifted and lowered as the first piston is lifted and lowered, And the second piston is disposed on the side of the first piston so as to smoothly return the emergency roller with a simple structure and reduce the vertical length of the cylinder so that the diameter of the emergency roller Can be maximized. The height of the cylinder is reduced by 33.7 mm, and the diameter of the emergency roller can be enlarged to 113 mm through the secured space.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a bottom perspective view of a conventional magnetic levitation train showing an emergency landing state. FIG.
2 is a perspective view of an emergency roller assembly for a magnetic levitation train according to a preferred embodiment of the present invention.
3 is a sectional view of an emergency roller assembly for a magnetic levitation train according to a preferred embodiment of the present invention.
FIG. 4 is a sectional view showing a state in which the emergency roller for a magnetic levitation train descends according to a preferred embodiment of the present invention. FIG.
FIG. 5 is a sectional view showing a state in which an emergency roller for a magnetic levitation train is returned according to a preferred embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For reference, the same components as those of the conventional art will be described with reference to the above-described prior art, and a detailed description thereof will be omitted.

2 to 5, the emergency roller assembly for a magnetic levitation train according to the present embodiment includes an emergency roller 500 and a cylinder 700 for raising and lowering the emergency roller 500, 700 includes a cylinder body 710 and a first piston 720 installed on the cylinder body 710 so as to be able to move up and down and connected to the emergency roller 500. The first piston 720 And a first spring 741 for returning the second piston 730. The second piston 730 is disposed on the side of the first piston 720 .

The emergency roller 500 includes a bearing, a roller shaft connected to the inner ring of the bearing, and a roller tire connected to the outer ring of the bearing.

The emergency roller (500) absorbs the impact through the roller tire, so that the shock can be minimized even in a stepped section of the rail or the like.

Hereinafter, the forward and backward direction refers to the running direction of a magnetic levitation train (not shown) running along the rail, and the lateral direction refers to the width direction of the magnetic levitation train.

The emergency roller (500) is installed under the magnetic levitation train through the emergency roller bracket (600).

The emergency roller bracket 600 includes a shaft mounting portion disposed on both sides of the emergency roller 500 and a connecting portion connecting the upper portions of the shaft mounting portions on both sides.

The shaft mounting portion is formed in a plate shape arranged vertically.

The roller shaft is installed in the shaft mounting portion.

The connection portion includes a plate portion disposed horizontally and a bar portion 610 protruding from the upper portion of the plate portion.

A spring seating groove 611 is formed on the upper portion of the rod 610 and a rod through hole is formed to communicate with the spring seating groove 611. The spring seating groove 611 is formed so that an upper portion thereof is opened. The rod through hole is formed to penetrate in the vertical direction and is disposed at the lower portion of the spring seat 611.

In addition, a fastening bolt receiving groove is formed on the lower surface of the connecting portion so as to communicate with the rod through-hole.

The cylinder 700 lifts up the emergency roller 500 in an emergency.

The cylinder 700 may have two or only one emergency roller 500. When two cylinders 700 are provided in one emergency roller 500, two first and second lift grooves are formed in one cylinder body.

The cylinder 700 includes a cylinder body 710, a first piston 720 that is installed on the cylinder body 710 so as to be vertically movable and connected to the emergency roller 500, And a first spring 741 for returning the second piston 730. As shown in FIG.

The cylinder body 710 is formed in a block shape, and the first lift groove 711 and the second lift groove 712 are formed in the vertical direction.

The first elevating groove 711 is disposed on the upper portion of the emergency roller 500 and the second elevating groove 712 is disposed on the side of the first elevating groove 711. Specifically, the second lift groove 712 is disposed outside the first lift groove 711.

Further, the second lift groove 712 is disposed below the first lift groove 711.

The cylinder body 710 is horizontally formed with a connection passage 714 connecting the upper portion of the second lift groove 712 and the lower portion of the first lift groove 711. Due to the connection passage 714, the upper portion of the second lift groove 712 and the lower portion of the first lift groove 711 communicate with each other.

Further, a guide groove 713 is formed in the lower portion of the cylinder body 710. The guide groove 713 guides the upward movement of the bar 610 of the emergency roller bracket 600.

The guide groove 713 is disposed in a straight line with the first lift groove 711.

The guide grooves 713 are disposed in the lower portion of the first lift groove 711 and communicate with each other.

A cylinder cover block 800 for installing the cylinder 700 on the magnetic levitation train is installed on the cylinder body 710.

The cylinder cover block 800 is formed with a passage 801 communicating with the upper portion of the first lift groove 711. The oil line 801 is connected to a tank where oil is stored.

The cylinder cover block 800 is disposed only on the upper portion of the first lift groove 711.

A cover 715 covering the second lift groove 712 is provided at a lower portion of the cylinder main body 710.

The lid 715 is formed in a plate shape, and the first spring inserting portion is formed so as to protrude from the upper portion. The first spring insertion portion is inserted into the lower portion of the first spring 741.

The fluid (oil or air) under the second piston 730 can be introduced into the lid 715 or the cylinder body 710 when the second piston 730 is lifted or lowered, As shown in Fig.

The first piston 720 is inserted into the first lift groove 711 and is raised and lowered.

A sealing member is disposed between the first piston 720 and the cylinder body 710.

The piston rod 721 of the first piston 720 penetrates through the guide groove 713 and the spring seat 611 and the rod through hole and is fastened to the rod 610 of the emergency roller bracket 600 Lt; / RTI > Thus, the first piston 720 is connected to the emergency roller 500 through the emergency roller bracket 600.

A sealing member is disposed between the piston rod 721 and the cylinder body 710 so that the oil in the first lift groove 711 is not moved to the guide groove 713. [

A screw thread is formed on the lower outer circumferential surface of the piston rod 721 of the first piston 720 so that the fastening bolt is screwed.

On the outer circumferential surface of the piston rod 721, a first stopping jaw is formed to be disposed on the threaded portion. The first piston 720 is installed in the rod 610 so that a gap is formed between the first rod 610 and the first rod 610 when the rod is not normally impacted.

The piston rod 721 of the first piston 720 is fitted with a spring spacer.

On the outer circumferential surface of the piston rod 721, a second latching jaw is formed to catch the spring spacer. And the second latching jaw is disposed above the first latching jaw.

The spring spacer is formed in a ring shape and is disposed inside the guide groove 713.

The second piston 730 is inserted into the second lift groove 712 and is raised and lowered. Accordingly, the second piston 730 is disposed on the inner side of the first piston 720.

A sealing member is disposed between the second piston 730 and the cylinder body 710.

A second spring inserting portion 731, which is fitted to the upper portion of the first spring 741, protrudes from the lower portion of the second piston 730.

The first spring 741 may be a disk spring and is disposed below the second piston 730.

The first spring 741 is disposed within the second lift groove 712 and is disposed between the second piston 730 and the lid 715.

Further, a second spring 742 is provided between the emergency roller bracket 600 and the first piston 720.

The second spring 742 may also be provided as a disc spring.

The second spring 742 is seated in the spring seating groove 611 of the emergency roller bracket 600.

The upper portion of the second spring 742 is supported by the spring spacer and the lower portion is supported by the bar 610 of the emergency roller bracket 600. The shock can be absorbed by the second spring 742 when the first piston 720 is lowered.

Hereinafter, the operation of the present embodiment having the above-described configuration will be described.

As shown in FIG. 4, when oil flows into the first lift groove 711 through the oil passage 801 of the cylinder cover block 800, the first piston 720 is lowered. When the first piston 720 is lowered, the oil in the first lift groove 711 through the connection channel 714 is moved to the second lift groove 712 under the first piston 720. The second piston 730 is also lowered due to the oil being moved to the second lift-off groove 712. As a result, the first spring 741 is in the contracted state.

When the first piston 720 is lowered, the emergency roller bracket 600 connected to the piston rod 721 and the emergency roller 500 also descend. As a result, the maglev train travels through the emergency roller (500).

When the emergency situation is released, the hydraulic pressure is released through a valve or the like, and the second piston 730 is raised by the elastic force of the first spring 741 as shown in Fig. As the second piston 730 is lifted, the oil in the second lift groove 712 moves to the first lift groove 711, so that the first piston 720 also rises.

That is, the first spring 741 and the second piston 730 serve as an accumulator for return.

When the first piston 720 is lifted, the emergency roller bracket 600 connected to the piston rod 721 and the emergency roller 500 also ascend.

As described above, the first spring 741 for returning the first piston 720 is disposed on the side portion without being disposed on the same axis as the first piston 720, so that the vertical height of the cylinder 700 can be reduced , The diameter of the emergency roller (500) can be maximized.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims .

DESCRIPTION OF REFERENCE NUMERALS
500: Emergency roller 600: Emergency roller bracket
700: cylinder 710: cylinder body
720: first piston 730: second piston
741: first spring 742: second spring
800: Cylinder cover block

Claims (1)

Emergency roller;
And a cylinder for raising and lowering the emergency roller,
The cylinder
A cylinder body,
A first piston which is installed on the cylinder body so as to be able to move up and is connected to the emergency roller,
A second piston which is moved up and down as the first piston is moved up and down,
And a first spring for returning the second piston,
The second piston being disposed on a side of the first piston,
The emergency roller is connected to the first piston through an emergency roller bracket,
And a second spring is provided between the emergency roller bracket and the first piston.
KR1020150174278A 2015-12-08 2015-12-08 Emergency roller assembly for magnetic levitation train KR101860886B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150174278A KR101860886B1 (en) 2015-12-08 2015-12-08 Emergency roller assembly for magnetic levitation train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150174278A KR101860886B1 (en) 2015-12-08 2015-12-08 Emergency roller assembly for magnetic levitation train

Publications (2)

Publication Number Publication Date
KR20170067528A KR20170067528A (en) 2017-06-16
KR101860886B1 true KR101860886B1 (en) 2018-05-31

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591614A (en) * 2018-11-23 2019-04-09 中车四方车辆有限公司 Levitation train and its control method
CN112977355B (en) * 2021-03-05 2022-04-12 中国人民解放军国防科技大学 Telescopic parking rescue wheel and medium-low speed maglev train

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200349914Y1 (en) * 2004-01-30 2004-05-17 (주)마이크로 갤럭시 A riveting machine with a hydraulic booster
JP2009255631A (en) * 2008-04-14 2009-11-05 Jamco Corp Normal conducting magnetic levitation type vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200349914Y1 (en) * 2004-01-30 2004-05-17 (주)마이크로 갤럭시 A riveting machine with a hydraulic booster
JP2009255631A (en) * 2008-04-14 2009-11-05 Jamco Corp Normal conducting magnetic levitation type vehicle

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