CN117163098A - Suspension frame for magnetic suspension train - Google Patents
Suspension frame for magnetic suspension train Download PDFInfo
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- CN117163098A CN117163098A CN202311293925.5A CN202311293925A CN117163098A CN 117163098 A CN117163098 A CN 117163098A CN 202311293925 A CN202311293925 A CN 202311293925A CN 117163098 A CN117163098 A CN 117163098A
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- carbon fiber
- mounting
- bracket arm
- longitudinal beam
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- 239000000725 suspension Substances 0.000 title claims abstract description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 73
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 71
- 239000004917 carbon fiber Substances 0.000 claims abstract description 71
- 239000002131 composite material Substances 0.000 claims abstract description 47
- 238000005339 levitation Methods 0.000 claims abstract description 40
- 239000006260 foam Substances 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 25
- 230000007704 transition Effects 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000013585 weight reducing agent Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002493 climbing effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920007790 polymethacrylimide foam Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The application discloses a suspension framework for a magnetic levitation train, which comprises a bracket and a longitudinal beam assembly, wherein the bracket and the longitudinal beam assembly form a carbon fiber composite material forming structure; the connecting beam assembly is connected between the supporting arms and the longitudinal beam assemblies at two sides and comprises two connecting beams of a carbon fiber composite material forming structure; the connecting beams are assembled with the supporting arms and the longitudinal beam assemblies on the corresponding sides through the mounting seats, and two adjacent connecting beams are connected through the connecting rods. The bracket arm, the mounting seat, the longitudinal beam and the connecting beam of the suspension framework are all made of carbon fiber composite material, so that the weight of the suspension framework is lighter than that of a metal structure, and the lightweight design requirement is met. The connecting beam is made of carbon fiber composite materials, and the surface of the connecting beam is coated with the foam filling layer and the carbon fiber skin, so that parts such as a metal pin shaft, a spacer bush and a lining bush are omitted, the connecting beam is integrally formed, the light weight effect is good, the structure is simple, the part diversity is reduced, the cost is low, and the fatigue resistance is stronger.
Description
Technical Field
The application relates to the technical field of lightweight design of maglev trains, in particular to a suspension framework for a maglev train.
Background
The magnetic suspension train is an emerging urban rail ground transportation tool based on non-contact magnetic suspension, and has the advantages of stable operation, high speed and good climbing effect. In recent years, under the drive of energy saving and emission reduction policies in various countries, "weight reduction" is a current global focus, and weight reduction of vehicles has become a trend of world development. The vehicle emission and energy consumption can be effectively reduced by adopting the light weight measures of the vehicle parts at present. The use of the fiber composite material in the member can reduce the mass by at least 20% to 30% or more from the viewpoint of achieving the effect of weight reduction. According to research and calculation, the fuel consumption can be reduced by 6% when the automobile is lightened by 10%, and the energy conservation and emission reduction are facilitated. In future development, the carbon fiber composite material has stronger competitiveness and good social benefit. The carbon fiber composite material has very good energy absorbing capacity, which further ensures the safety of the vehicle. Carbon fiber composites are described as having about 4-5 times higher energy absorption capacity than metallic materials.
In the prior art, the supporting arms applied to the railway trains are usually made of metal materials, and the magnetic levitation trains are required to realize weight reduction. Secondly, because the bracket arm is the metal material at the present stage, consequently need use too much bolt with the connection of mount pad for the in-process of installation is wasted time and energy, and weight also increases, seriously influences the assembly efficiency and subtracts heavy effect.
In addition, the suspension frame connecting beam is an important component of the magnetic suspension frame, is one of main bearing members of the magnetic suspension train, and provides a certain turning moment to prevent the vehicle body from rolling sideways when the vehicle passes through a curve.
At present, the anti-side rolling connecting beam is a metal structural member, the anti-side rolling beam consists of four anti-side rolling sheets, two anti-side rolling sheets are combined into a group, and in the assembly, two single metal beams are connected and assembled by a plurality of mounting groups such as pin shafts, spacers, bushings and the like. The disadvantages of the prior art are: the anti-rolling connecting beam is made of metal materials, so that weight reduction is not facilitated, the assembly time of various parts is long, and the assembly is complex.
It is known that the density of carbon fiber composites is very low, only 1.5-2g/cm3. The density of the carbon fiber composite material is equivalent to 1/5 of that of steel, 1/2 of that of aluminum alloy, and the carbon fiber composite material is unique in light weight, and the high strength of the carbon fiber composite material can replace a plurality of traditional metal materials. The weight of the parts made of the carbon fiber composite material is 15% -30% lighter than that of the parts made of the traditional aluminum alloy material, and the service life of the machine is prolonged. The tensile strength can reach more than 3500MPa, which is 7-9 times of steel; the tensile elastic modulus reaches 2300-4300MPa, and is obviously higher than steel; the specific modulus of the carbon fiber composite material is also higher than that of steel, and the specific modulus of the carbon fiber is 2000 MPa/(g/cm 3), while the specific modulus of the steel is only 59 MPa/(g/cm 3).
Accordingly, based on the above technical problems, a person skilled in the art needs to develop a suspension frame for a magnetic levitation train.
Disclosure of Invention
The application aims to provide a suspension framework for a magnetic suspension train, which is novel by adopting a bracket arm, a connecting beam and a longitudinal beam which are made of carbon fiber materials, meets the light-weight design requirement, and meanwhile, the use of a plurality of fasteners can be reduced by using components made of the carbon fiber materials, the assembly efficiency is improved, and the product quality is ensured.
In order to achieve the above object, the present application provides the following technical solutions:
the application relates to a suspension frame for a magnetic levitation train, which comprises the following components:
the bracket and longitudinal beam assembly is of a carbon fiber composite material forming structure; and
the connecting beam assembly is connected between the supporting arms and the longitudinal beam assemblies at two sides and comprises two connecting beams of a carbon fiber composite material forming structure;
the connecting beams are assembled with the supporting arms and the longitudinal beam assemblies on the corresponding sides through mounting seats, and two adjacent connecting beams are connected through connecting rods.
Further, the bracket and stringer assembly includes:
the bracket and longitudinal beam integrated structure comprises a bracket and a longitudinal beam; and
the mounting seat is connected to one end of the supporting arm matched with the connecting beam;
the bracket arm is made of a carbon fiber composite material forming structure, and the mounting seat is of a carbon fiber composite material forming structure;
one side of the supporting arm is provided with an installation groove matched with the installation seat, and one side of the installation seat matched with the supporting arm is embedded into the installation groove and fastened with the supporting arm through a bolt.
Further, the bracket arm includes:
the bracket comprises a bracket arm connecting body and a bracket arm supporting body, wherein two grooves are formed in the bottom of the bracket arm supporting body;
the bracket arm connector is connected with the longitudinal beam, one end of the bracket arm support body is connected with the bracket arm connector, and the other end extends towards the side face of the bracket arm connector;
the bracket arm connector is far away from the end part of one end of the bracket arm support body and is close to the longitudinal beam connected with the bracket arm connector;
the end part of the bracket arm connector, which is far away from one end of the bracket arm support body, is configured into a plane structure, and the wall thickness of the end is 30mm;
the bottom surface of the bracket arm connector is configured into a planar structure;
the bracket arm connector is provided with an empty spring mounting hole;
the bracket arm support body and the bracket arm connector are in transition through a transition part, and the surface of the transition part is configured into an arc-shaped surface;
the mounting groove of the bracket arm connector is divided into a first mounting groove positioned at one side of the longitudinal beam and a second mounting groove positioned at the end part of the bracket arm connector.
Further, the mount pad includes:
a mounting seat assembly part which is matched with the bracket arm and is assembled and fixed; and
a mount connection part connected to the mount assembly part and serving as a connection base of an external connection beam;
the mounting seat assembly part comprises a first assembly part and a second assembly part;
the first assembly part and the second assembly part are integrally formed;
the first assembly part is embedded into the first mounting groove, the second assembly part is embedded into the second mounting groove, and the second assembly part and the first assembly part are fixedly connected with the bracket arm through a plurality of bolts;
the mounting seat connecting part is connected with the second assembling part;
the mounting seat connecting portion is far away from the connecting portion of which one end of the second assembling portion is configured to be matched with the connecting beam, the middle of the connecting portion is of an arc-shaped groove structure, and holes connected with the connecting beam are formed in two sides of the connecting portion.
Further, each group of the bracket arm and longitudinal beam assembly comprises a left bracket arm and a right bracket arm, and the longitudinal beam is connected between the left bracket arm and the right bracket arm;
the longitudinal beams are all carbon fiber composite material forming structures, the interior of the longitudinal beams is hollow, and the cross sections of the longitudinal beams are rectangular;
the bracket support body of the left bracket and the bracket support body of the right bracket are oppositely arranged.
Further, two tie-beams of the tie-beam assembly each include:
the connecting beam comprises a connecting beam body, a connecting beam body and a connecting beam body, wherein the connecting beam body is made of carbon fiber composite materials and is configured into a structure formed by stacking fiber layers of the carbon fiber composite materials;
carbon fiber skin coated on the outer surface of the connecting beam main body; and
a foam filling layer as an intermediate layer;
the foam filling layer is positioned between the connecting beam main body and the carbon fiber skin;
the connecting beam main body is provided with a plurality of mounting holes;
the connecting rods between the two connecting beams are connected with the connecting beams on the corresponding sides through corresponding mounting holes.
Further, one end of the connecting beam main body in the length direction is a first end, and the other end is a second end;
the width of the first end is greater than the width of the second end;
the connecting beam body is configured in a structure with a width gradually decreasing from the first end to the second end;
the first end is provided with two first mounting holes, and the second end is provided with a second mounting hole;
the outer side surface of the first end is provided with an arc-shaped groove, and the parts of the first end, which are positioned at the two sides of the arc-shaped groove, are convexly formed into connecting ends;
each connecting end is provided with a first mounting hole, and the first mounting holes are used for being connected with an external connecting seat through fasteners.
Further, a through hole penetrating through the connecting beam body is arranged at a position, close to the first end, of the connecting beam body, and the through hole is configured to be a movement space of a connecting rod between the connecting beams matched with each other;
the connecting beam main body is provided with a second mounting hole at the position matched with the movement space, one end of a connecting rod between two connecting beams matched with each other is connected with the second mounting hole at the second end through a fastener, the other end of the connecting rod is connected through a fastener through the second mounting hole on the connecting beam main body, and the connecting rod part extends into the movement space.
Further, the connecting rod includes:
a stem portion; and
connecting rod mounting parts positioned at two ends of the length direction of the rod part;
an embedded groove is formed in the second end of the connecting beam main body, and the second mounting holes are formed in two sides of the embedded groove;
the connecting rod installation part at one end of the rod part is embedded into the embedded groove, and two ends of the connecting rod installation part penetrate through the second installation hole at the second end;
the connecting rod installation part at the other end of the rod part is arranged in the movement space, and two ends of the connecting rod installation part penetrate through the second installation holes.
In the technical scheme, the suspension framework for the magnetic levitation train has the following beneficial effects:
the bracket arm, the mounting seat, the longitudinal beam and the connecting beam of the suspension framework are all made of carbon fiber composite material, so that the weight of the suspension framework is lighter than that of a metal structure, and the lightweight design requirement is met. The connecting beam is made of carbon fiber composite materials, and the surface of the connecting beam is coated with the foam filling layer and the carbon fiber skin, so that parts such as a metal pin shaft, a spacer bush and a lining bush are omitted, the connecting beam is integrally formed, the light weight effect is good, the structure is simple, the part diversity is reduced, the cost is low, and the fatigue resistance is stronger.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for those skilled in the art.
Fig. 1 is a schematic structural diagram of a suspension frame for a magnetic levitation train according to an embodiment of the present application;
FIG. 2 is a schematic view of the bottom of a levitation frame for a magnetic levitation train according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a bracket of a suspension frame for a magnetic levitation train according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a mounting seat of a suspension frame for a magnetic levitation train according to an embodiment of the present application;
fig. 5 is a schematic diagram of a connection structure between a bracket arm and a mounting seat of a suspension frame for a magnetic levitation train according to an embodiment of the present application;
FIG. 6 is a schematic diagram of the bottom of a bracket arm and mounting base of a levitation train levitation frame disclosed in an embodiment of the application;
FIG. 7 is a schematic diagram of a connection structure of a bracket and connection beam assembly of a levitation frame for a magnetic levitation train according to an embodiment of the present application;
FIG. 8 is a schematic view of a connection beam of a levitation frame for a magnetic levitation train according to an embodiment of the present application;
fig. 9 is a schematic diagram of a connection structure between a connection beam and a connection rod of a suspension frame for a magnetic levitation train according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a link of a levitation frame for a magnetic levitation train according to an embodiment of the present application;
fig. 11 is a schematic structural view of a bracket arm and longitudinal beam assembly of a suspension frame for a magnetic levitation train according to an embodiment of the present application.
Reference numerals illustrate:
1. a bracket arm; 2. a mounting base; 3. a connecting beam; 4. a longitudinal beam; 5. a connecting rod;
101. a bracket arm connector; 102. a bracket support; 103. a transition section; 104. an air spring mounting hole; 105. a first mounting groove; 106. a second mounting groove; 107. a groove;
201. a first fitting portion; 202. a second fitting portion; 203. an arc-shaped groove structure; 204. a hole;
301. a first end; 302. a second end; 303. carbon fiber skin; 304. a movement space; 305. a first mounting hole; 306. a second mounting hole;
30101. an arc-shaped groove; 30102. a connection end;
501. a stem portion; 502. and a connecting rod mounting part.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
See fig. 1 to 11;
a levitation frame for a magnetic levitation train of this embodiment, the levitation frame comprising:
the bracket and longitudinal beam assembly is a carbon fiber composite material forming structure; and
the connecting beam assembly is connected between the supporting arms and the longitudinal beam assemblies at two sides and comprises two connecting beams 3 of carbon fiber composite material forming structures;
the connecting beams 3 are assembled with the supporting arms and the longitudinal beam assemblies on the corresponding sides through the mounting seats 2, and two adjacent connecting beams 3 are connected through the connecting rods 5.
Specifically, the embodiment discloses a suspension framework of carbon fiber composite material, which is applicable to a magnetic levitation train; the suspension frame of this embodiment includes a trailing arm and a stringer assembly and a connecting beam assembly. Each suspension frame is provided with two groups of symmetrically arranged supporting arms and longitudinal beam assemblies, and two groups of symmetrically arranged connecting beam assemblies are arranged between the supporting arms and the longitudinal beam assemblies at the two sides. The connecting beam assembly of the embodiment specifically comprises two connecting beams 3, and the connecting beams 3 are connected with corresponding supporting arms 1 of the corresponding side supporting arms and longitudinal beam assembly through mounting seats 2.
In addition, in order to meet the requirement of the maglev train on lightweight design, the suspension framework of the embodiment is a carbon fiber composite material molding structure of the bracket arm 1, the longitudinal beam 4, the mounting seat 2 and the connecting beam 3. And is formed mainly by laminating carbon fiber layers, while when the carbon fiber layers of the present embodiment are laminated, adjacent layers are formed in a cross lamination having an angle, for example, the adjacent laying angle difference is 45 ° or 90 °.
Preferably, the bracket arm and longitudinal beam assembly of the present embodiment includes:
the bracket and longitudinal beam integrated structure comprises a bracket 1 and a longitudinal beam 4; and
the mounting seat 2 is connected to one end of the bracket arm 1 matched with the connecting beam 3;
the bracket arm 1 is made of a carbon fiber composite material forming structure, and the mounting seat 2 is made of a carbon fiber composite material forming structure;
one side of the bracket arm is provided with an installation groove matched with the installation seat 2, and one side of the installation seat 2 matched with the bracket arm 1 is embedded into the installation groove and is fastened with the bracket arm 1 through bolts.
The bracket arm 1 of the present embodiment includes:
the bracket comprises a bracket arm connector 101 and a bracket arm support 102, wherein two grooves are formed in the bottom of the bracket arm support 101;
the bracket connecting body 101 is connected with the longitudinal beam 4, one end of the bracket supporting body 102 is connected with the bracket connecting body 101, and the other end extends towards the side surface of the bracket connecting body 101;
the bracket connecting body 101 is far away from the end part of one end of the bracket supporting body 102 and is near the position of the longitudinal beam 4 connected with the bracket connecting body;
the end of the bracket arm connector 101, which is far away from the bracket arm support 102, is configured in a planar structure, and the wall thickness of the end is 30mm;
the bottom surface of the bracket arm connector 101 is configured in a planar structure;
the bracket arm connector 101 is provided with a hollow spring mounting hole 104;
the bracket support body 102 and the bracket connecting body 101 are in transition through the transition part 103, and the surface of the transition part 103 is configured into an arc surface;
the mounting groove of the bracket link 101 is divided into a first mounting groove 105 at one side of the side member 4 and a second mounting groove 106 at the end of the bracket link 101.
The above embodiment further defines the structure of the bracket arm 1, and the bracket arm 1 is formed by adopting a carbon fiber composite material, namely, is formed by laminating carbon fiber layers, and the laying angle difference of the carbon fiber layers in the embodiment is 45 degrees, namely, the laminating angles of adjacent carbon fiber layers are 45 degrees. Compared with a metal structure, the carbon fiber composite material forming structure of the embodiment has lighter weight, higher strength and stronger toughness, so that the strength of the bracket arm 1 is improved and the weight of the magnetic suspension train is reduced while the weight of the bracket arm 1 is reduced as a whole. The bracket 1 of the present embodiment has no reinforcing rib on the side, and is designed such that the end of the bracket connector 101 at the end far from the bracket support 102 is configured in a planar structure, and the wall thickness of the end is 30mm; the thickness of the wall is thickened to improve the structural strength. Next, the bottom surface of the bracket arm connector 101 is configured as a planar structure; the bracket arm connector 101 is provided with a hollow spring mounting hole 104. Compared with the prior art, the arc-shaped surface structure of the transition part 103 eliminates three reinforcing ribs, and adopts a mode that the three reinforcing ribs are integrally leveled to form the arc-shaped surface of the embodiment.
Preferably, based on the structure of the bracket arm 1 defined in the above embodiment, the present embodiment further defines the structure of the mounting base 2, specifically:
the mount 2 includes:
a mounting seat assembly part which is matched with the bracket arm 1 and is assembled and fixed; and
a mount connection part connected to the mount fitting part and serving as a connection base of the external connection beam 3;
the mount assembly includes a first assembly 201 and a second assembly 202;
the first fitting portion 201 and the second fitting portion 202 are integrally formed;
the first assembling part 201 is embedded into the first mounting groove 105, the second assembling part 202 is embedded into the second mounting groove 106, and the second assembling part 202 and the first assembling part 201 are fixedly connected with the bracket arm 1 through a plurality of bolts;
the mounting seat connecting part is connected with the second assembling part 202;
the end of the connecting part of the mounting seat, which is far away from the second assembling part 202, is configured as a connecting part matched with the connecting beam 3, the middle part of the connecting part is provided with an arc-shaped groove structure 203, and two sides of the connecting part are provided with holes 204 connected with the connecting beam 3.
The present embodiment specifically illustrates the connection structure of the bracket arm 1 and the mount 2. The mounting seat 2 of the embodiment is matched with the bracket arm 1 in a buried manner, that is, the first mounting groove 105 and the second mounting groove 106 are designed on the side surface of the bracket arm 1, and meanwhile, the mounting seat 2 and the corresponding position thereof are in an L-shaped structure and are divided into a first assembly part 201 and a second assembly part 202. The first fitting portion 201 is matched with the first mounting groove 105, the second fitting portion 202 is matched with the second mounting groove 106, and the first fitting portion and the second fitting portion are fastened by bolts after alignment.
Based on the structural limitation of the bracket arm 1 and the mounting seat 2, it can be obtained that the bracket arm 1 of the embodiment is replaced by a carbon fiber composite material forming structure, compared with a metal structure, the bracket arm is lighter in weight, better in strength and stronger in toughness, the light-weight design is integrally realized, parts of the bracket arm 1 and the mounting seat 2 are reduced to improve the assembly efficiency, and the bracket arm 1 and the mounting seat 2 can be better positioned by adopting a pre-buried connecting mode, so that the assembly precision is improved.
Preferably, each group of the supporting arms and the longitudinal beam assembly in the embodiment comprises a left supporting arm and a right supporting arm, and a longitudinal beam 4 is connected between the left supporting arm and the right supporting arm;
the longitudinal beams 4 are all of carbon fiber composite material forming structures, the inside of the longitudinal beams 4 is hollow, and the cross sections of the longitudinal beams 4 are rectangular; wherein the bracket support body of the left bracket and the bracket support body 102 of the right bracket are oppositely arranged.
The longitudinal beam 4 and the bracket arm 1 of the present embodiment are both formed by carbon fiber composite material, that is, formed by stacking carbon fiber composite material layers, and each carbon fiber composite material layer has a stacked angle difference, for example, a 45 ° angle difference. The longitudinal beam 4 of this embodiment is rectangular in cross section and has a thin-walled structure. The bracket arm 1 and the longitudinal beam 4 of the integrated structure of the embodiment are of carbon fiber composite material forming structures, and the lightweight design requirement of the magnetic levitation train is met. And the integrated structure reduces the connection of metal bolts and improves the assembly efficiency of the framework.
Preferably, the final embodiment further defines the structure of the tie beam assembly between the trailing arm and the stringer assembly, specifically:
the two connection beams 3 of the connection beam assembly of the present embodiment each include:
the connecting beam body is made of carbon fiber composite materials and is configured into a structure formed by stacking fiber layers of the carbon fiber composite materials;
carbon fiber skin 303 wrapping the exterior of the connecting beam body; and
a foam filling layer as an intermediate layer;
the foam fill layer is located between the connection beam body and the carbon fiber skin 303;
the connecting beam main body is provided with a plurality of mounting holes;
the connecting rod 5 between the two connecting beams is connected with the connecting beam 3 on the corresponding side through the corresponding mounting hole.
Further, one end of the connecting beam body in the length direction is a first end 301, and the other end is a second end 302;
the width of the first end 301 is greater than the width of the second end 302;
the connecting beam body is configured in a structure in which the width gradually decreases from the first end 301 to the second end 302;
the first end 301 is provided with two first mounting holes 305, and the second end 302 is provided with a second mounting hole 306;
the outer side of the first end 301 has an arc-shaped groove 30101, and portions of the first end 301 located on both sides of the arc-shaped groove 30101 are convexly formed as connection ends 30102;
each connecting end is provided with a first mounting hole 305, and the first mounting holes 305 are used for being connected with an external connecting seat 2 through fasteners.
Next, the connecting beam body of the present embodiment is provided with a through hole penetrating the connecting beam body at a position near the first end 301, the through hole being configured as a movement space of the connecting rod 5 between the mutually-fitted connecting beams 3;
a second mounting hole 306 is formed in the position where the connecting beam body is matched with the movement space, one end of the connecting rod 5 between the two connecting beams 3 matched with each other is connected with the second mounting hole 306 of the second end 302 through a fastener, the other end of the connecting rod is connected through the second mounting hole 306 on the connecting beam body through a fastener, and the connecting rod 5 extends into the movement space 304 partially.
In order to achieve the connection of the two connection beams 3, the link 5 of the present embodiment includes:
a stem 501; and
connecting rod mounting portions 502 located at both ends in the longitudinal direction of the lever portion 501;
the second end 302 of the connecting beam body is provided with an embedded groove, and two sides of the embedded groove are provided with second mounting holes 306;
a connecting rod mounting part 502 at one end of the rod part 501 is embedded into the embedded groove, and two ends of the connecting rod mounting part 502 penetrate into the second mounting hole 306 of the second end 302;
the connecting rod mounting part 502 at the other end of the rod part 501 is arranged in the movement space 304, and two ends of the connecting rod mounting part 502 penetrate into the second mounting hole 306 at the position.
The connecting beam assembly of the present embodiment is mainly divided into two connecting beams 3 to be connected to a connecting rod 5 between the two connecting beams 3. The connecting beam 3 of the present embodiment includes a connecting beam body, a foam filling layer coated on the surface of the connecting beam body, and a carbon fiber skin 303. The connecting beam body of the embodiment serves as a connecting foundation with the mounting base 2 and the connecting rod 5 of the whole maglev train frame. The carbon fiber skin 303 of the embodiment adopts carbon fiber twill prepreg, ensures the rigidity and surface quality of the product, and has good heat insulation, sound insulation, vibration prevention, crack resistance and other damage expansion resistance. The connecting beam main body of the embodiment is of an integrally formed structure, a traditional pin shaft and bushing connection mode is omitted, a PMI foam filling layer is adopted between the connecting beam main body and the carbon fiber skin 303 to fill, support can be effectively provided for the carbon fiber skin 303 when bearing load, the shape of a product is maintained, and the structure can effectively solve the contradiction between strength, rigidity and structural quality.
The whole structure adopts a prepreg molding process, takes a foam structure as a core mold, coats the carbon fiber skin 303, is placed in a mold for molding and molding into a whole, has stable size, simple process and low mold cost, and omits a large amount of subsequent assembly operations.
The connecting beam body is provided with a movement space 304 capable of passing through the connecting rod 5, and is provided with a second mounting hole 306, and the second mounting hole 306 of the second end 302 are used as mounting holes at two ends of the connecting rod 5, and connection is realized through a fastener. When the two connecting beam bodies are assembled into one body, the connecting rod 5 partially passes through the movement space 304, and a certain turning moment can be provided to prevent the vehicle body from rolling sideways when the vehicle passes through a curve.
The connecting beam of the embodiment is made of carbon fiber composite materials, and the surface is coated with the foam filling layer and the carbon fiber skin 303, so that parts such as a metal pin shaft, a spacer bush and a lining bush are omitted, and the connecting beam is integrally formed, has a good light weight effect, is simple in structure, reduces part diversity, is low in cost and is stronger in fatigue resistance.
The two connecting beams 3 of the connecting beam assembly are connected through the connecting rod 5, the second mounting holes 306 serve as connecting positions of connecting rod mounting portions 502 at two ends of the connecting rod 5, the relative positions of the two connecting beams 3 are kept, the structure of the connecting beam 3 is simplified, and the assembly efficiency of the connecting beam assembly can be improved.
In the technical scheme, the suspension framework for the magnetic levitation train has the following beneficial effects:
the bracket arm 1, the mounting seat 2, the longitudinal beam 4 and the connecting beam 3 of the suspension framework are all made of carbon fiber composite material, so that the weight of the suspension framework is lighter than that of a metal structure, and the lightweight design requirement is met. The connecting beam 3 is made of a carbon fiber composite material, and the surface of the connecting beam is coated with a foam filling layer and a carbon fiber skin 303, so that parts such as a metal pin shaft, a spacer bush and a lining bush are omitted, the connecting beam is integrally formed, the light weight effect is good, the structure is simple, the diversity of the parts is reduced, the cost is low, and the fatigue resistance is stronger.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (9)
1. The utility model provides a suspension framework for magnetic levitation train which characterized in that, this suspension framework includes:
the bracket and longitudinal beam assembly is of a carbon fiber composite material forming structure; and
the connecting beam assembly is connected between the supporting arms and the longitudinal beam assemblies at two sides and comprises two connecting beams (3) of a carbon fiber composite material forming structure;
the connecting beams (3) are assembled with the supporting arms and the longitudinal beam assemblies on the corresponding sides through mounting seats (2), and two adjacent connecting beams (3) are connected through connecting rods (5).
2. The levitation train levitation frame of claim 1, wherein the trailing arm and stringer assembly comprises:
the bracket and longitudinal beam integrated structure comprises a bracket (1) and a longitudinal beam (4); and
the mounting seat (2) is connected to one end of the supporting arm (1) matched with the connecting beam (3);
the bracket arm (1) is made of a carbon fiber composite material forming structure, and the mounting seat (2) is made of a carbon fiber composite material forming structure;
one side of the supporting arm (1) is provided with an installation groove matched with the installation seat (2), and one side of the installation seat (2) matched with the supporting arm (1) is embedded into the installation groove and is fastened with the supporting arm (1) through a bolt.
3. Suspension frame for a magnetic levitation train according to claim 2, characterized in that the bracket (1) comprises:
the bracket comprises a bracket arm connecting body (101) and a bracket arm supporting body (102), wherein two grooves (107) are formed in the bottom of the bracket arm supporting body (102);
the bracket arm connector (101) is connected with the longitudinal beam, one end of the bracket arm support body (102) is connected with the bracket arm connector (101), and the other end extends towards the side face of the bracket arm connector (101);
the bracket connecting body (101) is far away from the end part of one end of the bracket supporting body (102) and is close to the longitudinal beam connected with the bracket connecting body, and the mounting seat (2) is mounted at the position of the bracket connecting body;
an end of the bracket arm connector (101) far away from one end of the bracket arm support (102) is configured into a plane structure, and the wall thickness of the end is 30mm;
the bottom surface of the bracket arm connector (101) is configured into a planar structure;
an empty spring mounting hole (104) is formed in the bracket arm connector (101);
the bracket arm support body (102) and the bracket arm connecting body (101) are in transition through a transition part (103), and the surface of the transition part (103) is configured into an arc-shaped surface;
the mounting groove of the bracket arm connector (101) is divided into a first mounting groove (105) positioned at one side of the longitudinal beam and a second mounting groove (106) positioned at the end part of the bracket arm connector (101).
4. A levitation frame for a magnetic levitation train according to claim 3, wherein the mounting base (2) comprises:
a mounting seat assembly part which is matched with the bracket arm (1) and is assembled and fixed; and
a mount connection part connected to the mount fitting part and serving as a connection base for the external connection beam (3);
the mounting seat assembly part comprises a first assembly part (201) and a second assembly part (202);
the first assembly part (201) and the second assembly part (202) are integrally formed;
the first assembly part (201) is embedded into the first mounting groove (105), the second assembly part (202) is embedded into the second mounting groove (106), and the second assembly part (202) and the first assembly part (201) are fixedly connected with the bracket arm (1) through a plurality of bolts;
the mounting seat connecting part is connected with the second assembling part (202);
the mounting seat connecting portion is far away from the connecting portion of which one end of the second assembling portion (202) is configured to be matched with the connecting beam (3), the middle of the connecting portion is of an arc-shaped groove structure (203), and holes (204) connected with the connecting beam (3) are formed in two sides of the connecting portion.
5. A levitation frame for a magnetic levitation train according to claim 3, characterized in that each group of the trailing arms and the longitudinal beam assembly comprises a left trailing arm and a right trailing arm, and the longitudinal beam (4) is connected between the left trailing arm and the right trailing arm;
the longitudinal beam (4) is of a carbon fiber composite material forming structure, the inside of the longitudinal beam (4) is hollow, and the cross section of the longitudinal beam (4) is rectangular;
the bracket support body of the left bracket and the bracket support body (102) of the right bracket are oppositely arranged.
6. Suspension frame for magnetic levitation train according to claim 4, characterized in that both connection beams (3) of the connection beam assembly comprise:
the connecting beam comprises a connecting beam body, a connecting beam body and a connecting beam body, wherein the connecting beam body is made of carbon fiber composite materials and is configured into a structure formed by stacking fiber layers of the carbon fiber composite materials;
a carbon fiber skin (303) coated on the outer surface of the connecting beam main body; and
a foam filling layer as an intermediate layer;
the foam filling layer is positioned between the connecting beam main body and the carbon fiber skin (303);
the connecting beam main body is provided with a plurality of mounting holes;
the connecting rods (5) between the two connecting beams (3) are connected with the connecting beams (3) on the corresponding side through corresponding mounting holes.
7. The levitation train levitation frame of claim 6, wherein one end of the connecting beam body in the length direction is a first end (301) and the other end is a second end (302);
-the width of the first end (301) is greater than the width of the second end (302);
the connection beam body is configured in a configuration of progressively decreasing width from the first end (301) to the second end (302);
the first end (301) is provided with two first mounting holes (305), and the second end (302) is provided with a second mounting hole (306);
the outer side surface of the first end (301) is provided with an arc-shaped groove (30101), and parts of the first end (301) positioned at two sides of the arc-shaped groove (30101) are convexly formed into connecting ends (30102);
each connecting end (30102) is provided with a first mounting hole (305), and the first mounting holes (305) are used for being connected with an external connecting seat (2) through fasteners.
8. Suspension frame for a magnetic levitation train according to claim 7, characterized in that the connection beam body is provided with a through hole through the connection beam body near the first end (301), which through hole is configured as a movement space (304) of a connecting rod (5) between mutually cooperating connection beams;
the connecting beam main body is provided with a second mounting hole (306) at the matched position of the moving space (304), one end of a connecting rod (5) between two mutually matched connecting beams is connected with the second mounting hole (306) of the second end (302) through a fastener, the other end of the connecting rod is connected through the second mounting hole (306) on the connecting beam main body through a fastener, and the connecting rod (5) is partially extended into the moving space (304).
9. Suspension frame for a magnetic levitation train according to claim 8, characterized in that the connecting rod (5) comprises:
a rod (501); and
connecting rod mounting parts (502) positioned at both ends of the rod part (501) in the length direction;
an embedded groove is formed in the second end of the connecting beam main body, and the second mounting holes (502) are formed in two sides of the embedded groove;
the connecting rod installation part (502) at one end of the rod part (501) is embedded into the embedded groove, and two ends of the connecting rod installation part (502) are penetrated into the second installation hole (306) of the second end (302);
the connecting rod installation part (502) at the other end of the rod part (501) is arranged in the movement space (304), and two ends of the connecting rod installation part (502) are penetrated into the second installation hole (306) at the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311293925.5A CN117163098A (en) | 2023-10-08 | 2023-10-08 | Suspension frame for magnetic suspension train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311293925.5A CN117163098A (en) | 2023-10-08 | 2023-10-08 | Suspension frame for magnetic suspension train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117163098A true CN117163098A (en) | 2023-12-05 |
Family
ID=88941413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311293925.5A Pending CN117163098A (en) | 2023-10-08 | 2023-10-08 | Suspension frame for magnetic suspension train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117163098A (en) |
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2023
- 2023-10-08 CN CN202311293925.5A patent/CN117163098A/en active Pending
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