CN116331279A

CN116331279A - Emergency support guide sliding shoe suitable for low vacuum pipeline superconducting electric magnetic levitation

Info

Publication number: CN116331279A
Application number: CN202111587331.6A
Authority: CN
Inventors: 赵明; 毛凯; 武震啸; 刘德刚; 孙涛; 刘成龙; 王少聪
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2023-06-27

Abstract

The invention relates to the technical field of running mechanisms of magnetic levitation vehicles, and discloses an emergency support guide sliding shoe suitable for low-vacuum pipeline superconducting electric magnetic levitation. The emergency support guide sliding shoe comprises a wearing plate, a mounting assembly, a main metal rubber piece, an auxiliary metal rubber piece and a fastener, wherein the lower surface of the wearing plate is provided with an inclined surface used for being in contact with a track, the mounting assembly comprises a first mounting base used for being connected with a suspension frame and a second mounting base used for being connected with the wearing plate, the second mounting base is arranged on the upper surface of the wearing plate, the upper end of the second mounting base is provided with a main mounting groove, the lower end of the second mounting base is provided with an auxiliary mounting groove, the bottom of the main mounting groove and the bottom of the auxiliary mounting groove are communicated through a through hole, the main metal rubber piece is arranged in the main mounting groove, the auxiliary metal rubber piece is arranged in the auxiliary mounting groove, the first mounting base is provided with a boss, the boss penetrates through the main metal rubber piece to enter the through hole, and the fastener penetrates the auxiliary metal rubber piece to be connected with the boss.

Description

Emergency support guide sliding shoe suitable for low vacuum pipeline superconducting electric magnetic levitation

Technical Field

The invention relates to the technical field of running mechanisms of magnetic levitation vehicles, in particular to an emergency support guide sliding shoe suitable for low vacuum pipeline superconducting electric magnetic levitation.

Background

When a magnetic levitation train of a superconducting electric magnetic levitation (EDS) system operates, a ground coil is cut by a magnetic field of a vehicle-mounted superconducting magnet to generate an induction current and an induction magnetic field, and the magnetic field of the vehicle-mounted superconducting magnet interacts with the induction magnetic field of the ground coil to generate electromagnetic levitation force and guiding force, so that levitation and guiding of the train are realized. In order to improve economy, 2 levitation frames are generally installed below each car body, or 1 levitation frame is shared by adjacent car bodies in a hinged grouping mode, once a magnet is quenched, all or part of electromagnetic levitation guiding force is lost, and a great rail collision risk exists, so that an emergency support guiding device must be installed, and reliable mechanical support guiding capability is provided for magnetic levitation after the magnet is quenched.

In the prior art, the emergency supporting guide wheel device is provided, rotating parts such as a roller, an inner ring and the like of a bearing of the device are made of non-magnetic conductive and non-conductive ceramic materials, so that the problems of bearing eddy current heat, electric erosion, grease consolidation and the like caused by a magnetic field of a superconducting magnet when the wheel body rotates at high speed can be solved, and meanwhile, vibration reduction is realized by means of a rubber pad between an outer ring of the bearing and an installation seat.

However, the prior art devices have the following disadvantages: firstly, the bearing and the highest rotating speed of the ceramic bearing are limited, the short-time supporting and guiding after about 550km/h quench can be realized at maximum when the weight of the train is born, the problems of structural damage, grease consolidation and the like are easily caused by friction heat when the service time exceeds the range, and the durability is low; secondly, the ceramic bearing has poor impact resistance, the buffer vibration reduction is carried out by adding a rubber ring between the outer ring of the bearing and the mounting bracket of the bearing, the buffer vibration reduction performance of the rubber ring is limited due to the size limitation, the damping is smaller, the ceramic bearing and the vehicle are impacted greatly after the quench drop and the risk of multiple bouncing drops exists, so the ceramic bearing and the train have higher requirements on the strength and the rigidity of the integral structure, and the weight reduction is not facilitated; thirdly, the wheel body is in direct contact with the track, so that the metal material is still needed, and the problem of eddy current heat and eddy current resistance still exists due to the strong magnetic field generated by the high-speed rotation cutting superconducting magnet of the wheel body in the use process.

Disclosure of Invention

The invention provides an emergency support guide sliding shoe suitable for low vacuum pipeline superconducting electric magnetic levitation, which can solve the technical problems in the prior art.

The invention provides an emergency support guide sliding shoe suitable for low vacuum pipeline superconducting electric magnetic levitation, which comprises a wearing plate, a mounting assembly, a main metal rubber piece, an auxiliary metal rubber piece and a fastening piece, wherein the lower surface of the wearing plate is provided with an inclined surface used for contacting a track, the mounting assembly comprises a first mounting base used for being connected with a suspension frame and a second mounting base used for being connected with the wearing plate, the second mounting base is arranged on the upper surface of the wearing plate, the upper end of the second mounting base is provided with a main mounting groove, the lower end of the second mounting base is provided with an auxiliary mounting groove, the bottom of the main mounting groove and the bottom of the auxiliary mounting groove are communicated through a through hole, the main metal rubber piece is arranged in the main mounting groove, the auxiliary metal rubber piece is arranged in the auxiliary mounting groove, the first mounting base is provided with a boss penetrating through the main metal rubber piece and entering the through hole, and the fastening piece penetrates through the auxiliary metal rubber piece and is connected with the boss.

Preferably, the main metal rubber member and the auxiliary metal rubber member are in a circular ring structure, the inner diameter of the main metal rubber member is the same as the inner diameter of the auxiliary metal rubber member, the outer diameter of the main metal rubber member is the same as the outer diameter of the auxiliary metal rubber member, and the height of the main metal rubber member is larger than that of the auxiliary metal rubber member.

Preferably, the fastening piece is a fastening screw, the boss is provided with a threaded hole, and the fastening screw is connected with the threaded hole in a matching mode.

Preferably, the first mounting base is connected with the suspension frame through a connecting piece, and the second mounting base is connected with the wearing plate through a connecting piece.

Preferably, the wear plate material is austenitic stainless steel or titanium alloy.

Preferably, the material of the first mounting base and the second mounting base is austenitic stainless steel or titanium alloy.

Preferably, the material of the main metal rubber member and the auxiliary metal rubber member is austenitic stainless steel wire or alloy wire.

Preferably, the material of the fastener is austenitic stainless steel or titanium alloy.

According to the technical scheme, the skid shoe type emergency supporting structure is adopted to replace a wheel type emergency supporting structure, a high-speed rotating part is not required to be arranged, and the problem that eddy current heat and eddy current resistance are generated in a high-speed cutting magnetic field of the metal wheel body is solved; the ceramic bearing is not needed, so that the use of the sliding shoe is not limited by the bearing of the ceramic bearing and the highest rotating speed; and the metal rubber is used as a buffering vibration isolation element, so that the damping device has high damping ratio of 0.1-0.2 and high heat resistance at the temperature of not less than 400-600 ℃, and the sliding shoe has a motion space with six degrees of freedom in a certain range after being assembled, thereby being suitable for different falling postures, having strong buffering vibration damping performance and small maximum overload of a train.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 shows a perspective view of an emergency support guide shoe adapted for low vacuum conduit superconducting electric magnetic levitation in accordance with an embodiment of the present invention;

fig. 2 shows a cross-sectional view of an emergency support guide shoe adapted for low vacuum conduit superconducting electric magnetic levitation in accordance with an embodiment of the present invention.

Description of the reference numerals

1. A wear plate; 2 a first mounting base; 3 a second mounting base;

4. a main metal rubber member; 5 pairs of metal rubber pieces; 6 fasteners.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1 and 2, an embodiment of the present invention provides an emergency support guide shoe suitable for low vacuum pipe superconducting electric magnetic levitation, wherein the emergency support guide shoe includes a wear plate 1, a mounting assembly, a main metal rubber member 4, a sub metal rubber member 5 and a fastener 6, the lower surface of the wear plate 1 is provided with a slope for contacting with a rail, the mounting assembly includes a first mounting base (a suspension end mounting base) 2 for connecting with a suspension and a second mounting base (a wear plate end mounting base) 3 for connecting with the wear plate 1, the second mounting base 3 is provided on the upper surface of the wear plate 1, the upper end of the second mounting base 3 is provided with a main mounting groove, the lower end is provided with a sub mounting groove, the bottom of the main mounting groove and the bottom of the sub mounting groove are penetrated by a through hole, the main metal rubber member 4 is provided in the main mounting groove, the sub metal rubber member 5 is provided in the sub mounting groove, the first mounting base 2 is provided with a boss, the boss passes through the main metal rubber member 4 and enters the fastener 5 to pass through the through hole.

The fastening piece is connected with the boss from bottom to top, and limits the main metal rubber piece and the auxiliary metal rubber piece in respective mounting grooves, so that the main metal rubber piece, the auxiliary metal rubber piece, the first mounting base and the second mounting base form a whole. When the train falls due to quench of the superconducting magnet, the main metal rubber piece and the auxiliary metal rubber piece generate compression deformation according to the falling gesture of the train, and six-degree-of-freedom buffering vibration reduction is provided when the wearing plate is attached to the rail.

The emergency support guide sliding shoes can be arranged at the bottom of a train and at two sides of the train, and are generally arranged on a suspension frame. For example, four sets of emergency support guide shoes according to the invention can be arranged at the bottom of each suspension frame, and two sets of emergency support guide shoes according to the invention are respectively arranged at two sides of each suspension frame.

According to one embodiment of the invention, the inclined surfaces provided on the lower surface of wear plate 1 may be formed by chamfering the ends of wear plate 1.

According to one embodiment of the present invention, the main metal rubber member 4 and the auxiliary metal rubber member 5 are in a circular ring structure, the inner diameter of the main metal rubber member 4 is the same as the inner diameter of the auxiliary metal rubber member 5, the outer diameter of the main metal rubber member 4 is the same as the outer diameter of the auxiliary metal rubber member 5, and the height of the main metal rubber member 4 is greater than the height of the auxiliary metal rubber member 5.

The main metal rubber piece is large in size, can have more compressible quantity, and provides buffer vibration isolation for the train in all directions in the falling and subsequent running of the train; the auxiliary metal rubber piece is small in size, so that the relative operation between the fastener and the first mounting base can be guaranteed, and meanwhile, certain buffering vibration isolation capability is provided in the axial direction.

According to one embodiment of the invention, the fastening member 6 is a fastening screw, the boss is provided with a threaded hole, and the fastening screw is in fit connection with the threaded hole.

According to one embodiment of the invention, the first mounting base 2 is connected to the suspension frame by means of a connection, and the second mounting base 3 is connected to the wear plate 1 by means of a connection.

For example, the connecting piece is a screw, and the second mounting base and the wearing plate are connected through the cooperation of the screw and the threaded hole on the wearing plate. The screw can pass through the fastener to be connected with the threaded hole of the wearing plate, and can also pass through the second mounting base to be connected with the threaded hole of the wearing plate.

According to one embodiment of the invention, the material of the wear plate 1 is austenitic stainless steel (e.g., austenitic stainless steel 0Cr18Ni9 Ti) or a titanium alloy (e.g., titanium alloy TC 4).

For example, the wear plate may be integrally machined from austenitic stainless steel or titanium alloy.

By adopting the material, the abrasion loss of the abrasion board can be reduced and the abrasion loss of the abrasion board can be controlled. And moreover, by carrying out calculation and experimental verification of the heat flow distribution coefficient and the abrasion loss of the friction pair during design, the thickness of the abrasion plate can be ensured to cover the abrasion loss and meanwhile, the abrasion loss has enough high-temperature strength.

According to one embodiment of the invention, the material of the first mounting base 2 and the second mounting base 3 is austenitic stainless steel or titanium alloy.

For example, the first mounting base is machined from austenitic stainless steel or titanium alloy, with mounting holes (e.g., threaded holes) machined for fixed mounting with the suspension bracket, and the boss is integrally connected with the primary metal rubber, the secondary metal rubber, and the second mounting base or wear plate by fastening screws. The second mounting base is made of austenitic stainless steel or titanium alloy through machining, and is provided with mounting holes (for example, threaded holes) for fixedly connecting with the wearing plate, and is integrally connected with the main metal rubber piece, the auxiliary metal rubber piece and the first mounting base through fastening screws.

According to one embodiment of the present invention, the material of the main metal rubber member 4 and the auxiliary metal rubber member 5 is austenitic stainless steel wire or alloy wire.

For example, the main metal rubber member 4 and the auxiliary metal rubber member 5 may be homogeneous elastic porous buffering vibration damping elements formed by pressing austenitic stainless steel wires or high-temperature alloy wires.

Thus, the main metal rubber member and the auxiliary metal rubber member can have high temperature resistance and high damping ratio characteristics.

The superalloy wire may be, for example, a GH4169 alloy wire.

Through reasonable design to main metal rubber spare with the rigidity of vice metal rubber spare can guarantee to lose time out the suspension frame and train's automobile body transverse overload coefficient is not greater than 3, vertical is not greater than 5. In order not to obscure the present invention, a detailed description thereof will be omitted.

According to one embodiment of the invention, the material of the fastener 6 is austenitic stainless steel or a titanium alloy.

For example, the fastening screw is made of austenitic stainless steel or titanium alloy by integral machining, one end of the fastening screw is provided with threads, and the fastening screw is used for connecting the main metal rubber piece, the auxiliary metal rubber piece, the first mounting base and the second mounting base or the wearing plate into a whole, and the device after connection has six-degree-of-freedom motion space with a certain range and six-degree-of-freedom buffering vibration isolation capability.

With continued reference to fig. 1 and 2, two sets of mounting assemblies may be provided on each wear plate 1, each set of mounting assemblies being correspondingly provided with a primary metal rubber member 4, a secondary metal rubber member 5 and a fastener 6. For both sets of mounting assemblies, the amount of compressibility is reserved axially and radially.

It will be appreciated by persons skilled in the art that the foregoing description of amounts is merely exemplary and is not intended to limit the invention.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an emergent support direction shoe suitable for low vacuum pipeline superconductive electronic magnetic levitation, its characterized in that, this emergent support direction shoe includes wearing plate (1), installation component, main metal rubber spare (4), vice metal rubber spare (5) and fastener (6), wearing plate (1) lower surface is provided with the inclined plane that is used for with track contact, installation component is including first mounting base (2) that are used for being connected with the suspension frame and be used for with second mounting base (3) that wearing plate (1) are connected, second mounting base (3) set up the upper surface of wearing plate (1), second mounting base (3) upper end is provided with main mounting groove, and the lower extreme is provided with vice mounting groove, and the bottom of main mounting groove with the bottom of vice mounting groove is link up through the through-hole, main metal rubber spare (4) set up in the main mounting groove, vice metal rubber spare (5) set up in the vice mounting groove, first mounting base (2) are provided with the boss, main rubber spare (4) get into with vice rubber spare (6) pass through the through-hole.

2. The emergency support guide shoe according to claim 1, wherein the main metal rubber member (4) and the auxiliary metal rubber member (5) are of a circular ring structure, the inner diameter of the main metal rubber member (4) is the same as the inner diameter of the auxiliary metal rubber member (5), the outer diameter of the main metal rubber member (4) is the same as the outer diameter of the auxiliary metal rubber member (5), and the height of the main metal rubber member (4) is larger than the height of the auxiliary metal rubber member (5).

3. Emergency support guide shoe according to claim 2, characterized in that the fastening means (6) are fastening screws, the boss being provided with threaded holes, the fastening screws being in mating connection with the threaded holes.

4. Emergency support guide shoe according to claim 1, characterized in that the first mounting base (2) is connected to the suspension frame by means of a connection, and the second mounting base (3) is connected to the wear plate (1) by means of a connection.

5. Emergency support guide shoe according to any of claims 1-4, characterized in that the material of the wear plate (1) is austenitic stainless steel or a titanium alloy.

6. Emergency support guide shoe according to any of claims 1-4, characterized in that the material of the first mounting base (2) and the second mounting base (3) is austenitic stainless steel or titanium alloy.

7. Emergency support guide shoe according to any of claims 1-4, characterized in that the material of the primary metal rubber part (4) and the secondary metal rubber part (5) is austenitic stainless steel wire or alloy wire.

8. Emergency support guide shoe according to any of claims 1-4, characterized in that the material of the fastener (6) is austenitic stainless steel or titanium alloy.