CN113022609B

CN113022609B - Chassis for magnetic levitation vehicle and magnetic levitation vehicle

Info

Publication number: CN113022609B
Application number: CN201911251284.0A
Authority: CN
Inventors: 王峰; 郭金城; 王晓梅; 崔玉萌; 杨君; 王国静
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2023-01-24
Anticipated expiration: 2039-12-09
Also published as: WO2021114269A1; CN113022609A

Abstract

The embodiment of the application provides an underframe for a magnetic levitation vehicle and the magnetic levitation vehicle. The underframe comprises a floor assembly and a plurality of sliding tables; the floor panel assembly comprises: the floor framework is made of composite materials; a rigid frame secured to a side edge of the floor frame; the lower panel is fixed on the lower surface of the floor framework and is a lower panel made of composite materials; the upper panel is fixed on the upper surface of the floor framework and is made of composite materials; the sliding table comprises a supporting structure made of composite materials, and the supporting structure is fixed on the upper surface of the upper panel. The magnetic levitation vehicle comprises the aforementioned baseplate. The technical problem that an existing underframe cannot meet the light weight requirement of a magnetic levitation vehicle and the spatial arrangement optimization is solved.

Description

Chassis for magnetic levitation vehicle and magnetic levitation vehicle

Technical Field

The application relates to the technical field of railway vehicles, in particular to an underframe for a magnetic levitation vehicle and the magnetic levitation vehicle.

Background

The magnetic suspension train has the advantages of high speed, low energy consumption, low noise and the like, and is one of the development directions of the rail train. The existing rail train has heavier parts and larger size, can not meet the requirement of a maglev train with relatively more equipment under the train, adopts a welding structure in the existing structure, has larger welding deformation, causes great difficulty for rest, adopts metal parts simultaneously, has heavier quality, and therefore needs to improve each part aiming at the maglev train.

In summary, the existing floor has a heavy weight, and meanwhile, the occupied space under the vehicle is more, so that the floor cannot well meet the requirements of the development of the magnetic levitation vehicle on weight reduction and space optimization, which is a technical problem that the technicians in the field need to solve urgently.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to a person of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides an underframe for a magnetic levitation vehicle and the magnetic levitation vehicle, and aims to solve the technical problems of light weight requirements of the existing underframe and optimized spatial arrangement.

The embodiment of the application provides an underframe for a magnetic levitation vehicle, which comprises a floor assembly and a plurality of sliding tables;

the floor panel assembly comprises:

the floor framework is made of composite materials;

a rigid frame secured to a side edge of the floor frame;

the lower panel is fixed on the lower surface of the floor framework and is made of composite materials;

the upper panel is fixed on the upper surface of the floor framework and is made of composite materials;

the sliding table comprises a supporting structure made of composite materials, and the supporting structure is fixed on the upper surface of the upper panel.

The embodiment of the application also provides the following technical scheme:

a magnetic levitation vehicle comprises the underframe.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

the rigid frame in the floor composition is fixed at the side edge of the floor framework made of composite materials, so that the rigidity and the strength of the whole floor composition are high; the floor comprises a floor framework, an upper panel and a lower panel, wherein the upper panel and the lower panel are made of composite materials, the upper panel is fixed on the upper surface of the floor framework, and the lower panel is fixed on the lower surface of the floor framework, so that most of the floor components are made of composite materials, and the overall weight is smaller under the condition that the strength and the rigidity meet the requirements of the floor components, and the floor is suitable for the requirement of a magnetic levitation vehicle on smaller overall weight; the direct structure of the supporting function in the sliding table is made of composite materials, the sliding table is fixed on the upper surface formed by the floor through the supporting structure and used for being connected with the suspension frame of the rail vehicle, the strength of the sliding table can sufficiently support the suspension frame, meanwhile, the weight is small, the structure is simple, the occupied space under the vehicle is small, and the sliding table can be suitable for the magnetic suspension vehicle. Therefore, the chassis of the embodiment of the application has smaller overall weight, and is suitable for the requirement that the overall weight of a magnetic suspension vehicle is smaller.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of an undercarriage for a magnetic levitation vehicle according to an embodiment of the present application;

fig. 2 is an exploded view of the undercarriage for a magnetic levitation vehicle shown in fig. 1;

FIG. 3 is a schematic view of a floor component of the undercarriage shown in FIG. 2;

FIG. 4 is an exploded view of the flooring composition shown in FIG. 3;

FIG. 5 is a schematic view of a floor frame of the floor panel assembly shown in FIG. 4;

FIG. 6 is a cross-sectional view of a stringer of the floor frame of FIG. 5;

FIG. 7 is a cross-sectional view of a cross-member of the floor frame of FIG. 6;

FIG. 8 is a schematic view of a frame of the floor panel assembly shown in FIG. 5;

FIG. 9 is a cross-sectional view of the floor panel assembly of FIG. 3 at the location of a cross-beam;

FIG. 10 is a cross-sectional schematic view of the vertical arm of the frame shown in FIG. 8;

FIG. 11 is a cross-sectional schematic view of a transverse arm of the frame shown in FIG. 8;

FIG. 12 is an exploded view of the slide of the undercarriage shown in FIG. 2;

fig. 13 is a top view of the support structure of the skid platform shown in fig. 12;

FIG. 14 isbase:Sub>A cross-sectional view A-A of FIG. 13;

FIG. 15 is a cross-sectional view B-B shown in FIG. 13;

FIG. 16 is a perspective view of the draft gear of the undercarriage shown in FIG. 2;

FIG. 17 is a top view of the draft cushioning device of FIG. 16;

fig. 18 is a cross-sectional view taken at C-C of fig. 17.

Description of reference numerals:

100 of the floor board, and the floor board,

110 floor framework, 111 longitudinal beam, 112 transverse beam, 113 head end beam, 114 door position reinforcing beam, 115 head sliding table position reinforcing beam, 116 middle sliding table position reinforcing beam,

the structure comprises a 117 tail sliding table position reinforcing beam, a 118 upper panel avoiding part, a 119 lower panel avoiding part, a 120 frame, a 130 lower panel, a 140 upper panel and a 150 floor framework filling layer;

200 of the traction and the buffer device are arranged,

210 traction buffer body, 211 traction buffer cavity, 212 traction buffer cavity filling layer,

213 reinforcing ribs, 214 hollow columnar structures, 215 wiring holes, 216 inner fixing flanges,

217 are fixed by means of an external flange,

a 220 wear plate;

300 slipways, 310 supporting structures, 311 fixing flanges, 311-1 fixing flange bolt holes,

312 strip-shaped bulges, 312-1 strip-shaped bulge bolt holes, 313 escape openings, 314 cover covers,

321 wear strips, 400 test unit.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

FIG. 1 is a schematic view of an undercarriage for a magnetic levitation vehicle according to an embodiment of the present application; fig. 2 is an exploded view of the undercarriage for a magnetic levitation vehicle shown in fig. 1; FIG. 3 is a schematic view of a floor component of the undercarriage shown in FIG. 2; FIG. 4 is an exploded view of the flooring composition shown in FIG. 3; fig. 5 is a schematic view of a floor framework composed of the floor shown in fig. 4. As shown in fig. 1 and 2, the underframe for a magnetic levitation vehicle according to the embodiment of the present application includes a floor assembly 100, a traction buffer 200, and a plurality of sliding tables 300.

As shown in fig. 3, 4 and 5, the floor panel assembly 100 includes:

a floor frame 110, which is a composite floor frame;

a rigid frame 120 secured to the side edges of the floor frame;

a lower panel 130 fixed to a lower surface of the floor frame, the lower panel being a lower panel of a composite material;

an upper panel 140 fixed to an upper surface of the floor frame, the upper panel being an upper panel of a composite material;

the sliding table 300 includes a support structure 310 made of a composite material, and the support structure 310 is fixed to the upper surface of the upper panel 140.

According to the underframe for the magnetic suspension vehicle, the rigid frame in the floor composition is fixed at the side edge of the floor framework made of the composite material, so that the rigidity and the strength of the whole floor composition are high; the floor comprises a floor framework, an upper panel and a lower panel which are both made of composite materials, wherein the upper panel is fixed on the upper surface of the floor framework, and the lower panel is fixed on the lower surface of the floor framework, so that most of the floor components are made of composite materials, and the overall weight is smaller under the condition that the strength and the rigidity meet the requirements of the floor components, and the floor is suitable for the requirements of magnetic suspension vehicles on smaller overall weight; the direct structure of the supporting function in the sliding table is made of composite materials, the sliding table is fixed on the upper surface formed by the floor through the supporting structure and used for being connected with the suspension frame of the rail vehicle, the strength of the sliding table can sufficiently support the suspension frame, meanwhile, the weight is small, the structure is simple, the occupied space under the vehicle is small, and the sliding table can be suitable for the magnetic suspension vehicle. Therefore, the chassis of the embodiment of the application has smaller overall weight, and is suitable for the requirement that the overall weight of a magnetic suspension vehicle is smaller.

The structure of the floor panel assembly will be explained below.

In implementation, as shown in fig. 4, an internal space enclosed by the floor framework 110 and the frame 120 is filled with honeycomb aluminum to form a floor framework filling layer 150, and a structural member is embedded in the floor framework filling layer;

the floor frame 110 and the lower panel 130 are formed as a first composite assembly using a co-curing process;

the frame 120 and the first composite assembly are formed by a normal temperature curing process as a first hybrid assembly;

the first mixing assembly and the top panel 140 are secured by a threaded connection and an adhesive bond.

The floor skeleton with the inside space that the frame encloses fills honeycomb aluminium and forms floor skeleton filling layer, in order to realize being connected with other parts of magnetic levitation vehicle, need pre-buried structure in floor skeleton filling layer, pre-buried structure is used for being connected with other parts of magnetic levitation vehicle like this.

The floor framework and the lower panel are both made of composite materials and formed by adopting a co-curing process, and the first composite assembly is formed by the co-curing process, so that the floor framework is good in integrity and more stable in structure. The frame and the first composite component are formed by adopting a normal-temperature curing process and are used as a first mixed component, so that two different materials are fixed together by the normal-temperature curing process; the first mixing component and the upper panel are fixed through threaded connection and adhesive joint.

In implementation, the floor framework is made of carbon fiber materials, the upper panel is made of carbon fiber materials, and the lower panel is made of carbon fiber materials;

the frame is a frame of aluminum profiles.

The floor framework, the upper panel and the lower panel are made of carbon fiber materials, and the floor framework filling layer is made of honeycomb aluminum, so that the whole weight of the floor composition is favorably controlled, and the total cost of the floor composition is controlled; the frame of the aluminium profile is rigid, providing sufficient rigidity and strength to the floor composition.

In practice, as shown in fig. 5, the floor frame comprises:

a plurality of longitudinal beams 111, the length of which is along the length direction of the magnetic levitation vehicle;

the cross beams 112 are arranged at intervals along the length direction of the longitudinal beam, are intersected and fixed with the longitudinal beam, and protrude out of the longitudinal beam at two ends;

a head end beam 113 fixed to the head end of the middle longitudinal beam, and the head ends of the side longitudinal beams are shorter than the middle side beam;

the side longitudinal beams are longitudinal beams positioned at two side edges, and the middle side beam is a longitudinal beam positioned between the two side longitudinal beams.

Therefore, the floor framework is a structure formed by intersecting the longitudinal beams, the transverse beams and the head end beams, so that the structure of the whole floor framework is stable.

In practice, as shown in fig. 5, the floor panel assembly further includes:

a plurality of sets of door position reinforcing beams 114, wherein each set of door position reinforcing beams 114 are arranged on the floor at intervals to form positions corresponding to the doors for installing the magnetic levitation vehicle;

the door position reinforcing beam 114 is a U-shaped structure with a widened opening;

the longitudinal arm of the door position reinforcing beam is intersected and fixed with the first longitudinal beam and the second longitudinal beam, the opening of the door position reinforcing beam faces outwards, and the transverse arm of the door position reinforcing beam is positioned between the second longitudinal beam and the third longitudinal beam;

the first side member, the second side member, and the third side member are three side members arranged in this order from the outside to the inside of each side member.

The position of the magnetic suspension vehicle for installing the vehicle door needs to be opened on the vehicle body, and the requirement on the strength of the position of the floor composition is high, so that the position corresponding to the floor composition needs to be reinforced, and the door position reinforcing beam is used for reinforcing the position corresponding to the floor composition door. The transverse arm of the door position reinforcing beam is located between the second longitudinal beam and the third longitudinal beam, and the reinforcing position is closer to the center of the floor framework, so that the strength and the rigidity of the corresponding position formed by the floor are higher.

In practice, as shown in fig. 5, the door position reinforcing beam 114 has steps at the ends of the longitudinal arms thereof which are flared outward;

door position reinforcing beam 114 is crossing fixed with one the crossbeam, the position that the opening widen of door position reinforcing beam is located the outside of first longeron.

The step that the end parts of two longitudinal arms of the door position reinforcing beam are expanded outwards enables the opening of the U-shaped structure with the widened opening to be widened at the end part; the door position reinforcing beam is intersected and fixed with one cross beam, so that the strength and the rigidity of the floor composition can be enhanced.

In practice, as shown in fig. 5, the floor panel assembly further comprises:

the multiple groups of sliding table position reinforcing beams are arranged at intervals on the floor board, and the positions of the sliding table position reinforcing beams corresponding to the installation of the magnetic suspension vehicle are formed.

In order to realize magnetic suspension, each magnetic suspension vehicle needs to be provided with a plurality of suspension frames, and in order to install the suspension frames, sliding tables for fixing the suspension frames need to be installed at the corresponding positions of the floor composition, so that the requirement on the strength of the positions of the floor composition is high. Therefore, reinforcement is required at a position corresponding to the floor composition. The reinforcing beams at the positions of the multiple groups of sliding tables are used for reinforcing the sliding table structure. The structural style of the slipway position reinforcing beam of each group can be selected according to the requirements of position and reinforcement.

In implementation, as shown in fig. 5, the slipway position reinforcing beam further includes a head slipway position reinforcing beam 115 in a half U shape, the head slipway position reinforcing beam 115 is fixed to the first longitudinal beam and the second longitudinal beam in an intersecting manner, the head slipway position reinforcing beam 115 is fixed to one surface of the first cross beam facing the head end beam in an intersecting manner, and the head slipway position reinforcing beam 115 is used for reinforcing the head section of the longitudinal beam;

the sliding table position reinforcing beam further comprises a U-shaped middle sliding table position reinforcing beam 116, the middle sliding table position reinforcing beam 116 is fixedly intersected with the first longitudinal beam, an opening of the middle sliding table position reinforcing beam faces outwards, and the transverse arm is located between the first longitudinal beam and the second side beam;

the sliding table position reinforcing beam further comprises a tail sliding table position reinforcing beam 117 with a special-shaped U-shaped end part, the tail sliding table position reinforcing beam is fixedly intersected with the first longitudinal beam and the second longitudinal beam, an opening of the end part special-shaped U-shaped sliding table position reinforcing beam faces outwards, and a transverse arm is positioned between the first longitudinal beam and the second side beam; and the tail sliding table position reinforcing beam is used for reinforcing the tail section of the longitudinal beam.

Through head slip table position reinforcing roof beam of half U-shaped, the afterbody slip table position reinforcing roof beam of the middle part slip table position reinforcing roof beam of U-shaped and the special-shaped U-shaped of tip reinforcing roof beam, all carried out the reinforcement to a plurality of positions that need the installation slip table, simultaneously for the structure that the floor is constituteed is firm.

FIG. 6 is a cross-sectional view of a stringer of the floor framework of FIG. 5; fig. 7 is a cross-sectional view of a cross member of the floor framework shown in fig. 6. In implementation, the head end beam is a head end beam with a rectangular frame in cross section;

as shown in fig. 6, the longitudinal beam 111 is a longitudinal beam with a cross section in a shape like a Chinese character 'ji', and a turned-up flange at the bottom of the longitudinal beam is fixed with the upper surface of the lower panel, and an outer top of the longitudinal beam is fixed with the lower surface of the upper panel;

as shown in fig. 7, the cross beam 112 is a cross beam with a rectangular frame in cross section, and the outer bottom of the cross beam is fixed to the upper surface of the lower panel, and the outer top of the cross beam is fixed to the lower surface of the upper panel.

The cross sections of the head end beam and the cross beam are rectangular frames, and the cross section structure of the closed shape is stable; the cross section of the longitudinal beam is in a shape like a Chinese character 'ji', so that the longitudinal beam is more firmly fixed with the lower panel and the upper panel.

FIG. 8 is a schematic view of a frame of the floor assembly shown in FIG. 5; FIG. 9 is a cross-sectional view of the floor panel of FIG. 3 at the location of a cross-beam. In practice, as shown in fig. 8, the frame is a U-shaped frame;

as shown in fig. 9, the ends of the cross beams 112 of the floor frame are bonded and fixed to the inner sides of the vertical arms of the frame, and the ends of the longitudinal beams of the floor frame are bonded and fixed to the inner sides of the lateral arms of the frame.

Therefore, the U-shaped frame seals the semi-surrounded floor framework, so that the structure formed by the floor is more stable; the frame with in the first composite component adopted normal temperature curing process, the realization with the crossbeam of floor skeleton the tip with the inboard bonding of the vertical arm of frame is fixed, the tip of the longeron of floor skeleton with the inboard bonding of the horizontal arm of frame is fixed.

FIG. 10 is a cross-sectional schematic view of the vertical arm of the frame shown in FIG. 8; fig. 11 is a cross-sectional schematic view of a transverse arm of the frame shown in fig. 8. In practice, as shown in fig. 10 and 11, a concave upper panel escape portion 118 is provided at a position for fixing to the upper panel in the vertical arm and the horizontal arm of the frame, and the upper panel escape portion 118 are fixed;

and a lower panel avoiding part 119 which is concave upwards is arranged at the position where the vertical arm and the transverse arm in the frame are fixed with the lower panel, and the lower panel avoiding part 119 are fixed.

Therefore, the upper panel is fixed with the upper panel avoiding part of the frame, and the lower panel is fixed with the lower panel avoiding part of the frame, so that the structure formed by the floor is more stable.

It should be noted that, in the co-curing process mentioned in the embodiment of the present application, in order to meet the requirement of light weight of a composite material product and provide working efficiency, a plurality of components that originally need to be assembled secondarily are changed into one-step integral molding along with a curing process of one of the components through means such as process optimization, tooling design, and the like, so that the secondary assembly workload and the connection weight increase are reduced, and the process is called co-curing.

The structure of the slide table will be explained below.

FIG. 12 is an exploded view of the slide of the base frame of FIG. 2; fig. 13 is a top view of the support structure of the skid platform shown in fig. 12; fig. 14 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A shown in fig. 13.

As shown in fig. 12, 13 and 14, a slide table 300 for a magnetic levitation vehicle according to an embodiment of the present application includes:

a support structure 310 of composite material having a securing flange 311 at a bottom end thereof, the securing flange 311 having a plurality of securing flange bolt holes 311-1;

the top end of the supporting structure is used for being connected with a suspension frame of the magnetic suspension vehicle, the fixing flange bolt holes 311-1 are used for being matched with bolts, and meanwhile, the bolts are glued, so that the sliding table and the floor of the magnetic suspension vehicle are fixed.

The fixed flange bolt hole that the fixed flange that the slip table passed through the bearing structure bottom has and bolt and splice fix bearing structure on magnetic levitation vehicle's floor is constituteed, like this, through bearing structure's top with magnetic levitation vehicle's suspension is connected, has realized that slip table and magnetic levitation vehicle's floor is constituteed and the suspension is connected, and bearing structure has played the effect that supports the suspension. Because the supporting structure adopts composite materials, the strength can be enough to support the suspension frame, and meanwhile, the weight is smaller, the structure is simple, and the suspension frame can be suitable for magnetic suspension vehicles.

In practice, as shown in fig. 12 and 14, the top end of the supporting structure has two opposite strip-shaped protrusions 312, and an escape space is formed between the two strip-shaped protrusions 312;

the avoidance space is used for avoiding a structure of a suspension rack of the magnetic suspension vehicle, wherein the structure protrudes downwards.

Due to the existence of the avoidance space, interference does not exist between the supporting structure and the suspension frame, and the sliding table is not easily abraded; meanwhile, the avoidance space enables the required material of the sliding table to be small, the weight to be small and the cost to be low.

In practice, as shown in fig. 12 and 13, the strip-shaped protrusion bolt holes 312-1 are arranged on the strip-shaped protrusion 312 at intervals along the length direction thereof;

the strip-shaped protruding bolt holes 312-1 are used for being matched with bolts to achieve connection of a suspension frame of the magnetic suspension vehicle.

The strip-shaped protruding bolt holes are matched with the bolts, so that the connection between the sliding table and the suspension frame of the magnetic suspension vehicle is realized. Each maglev vehicle can be installed with a plurality of suspension frames, and each suspension frame corresponds four slip tables (the condition that two suspension frames share a slip table). In each suspension frame of the same magnetic suspension vehicle, a part of the suspension frame is fixed relative to the sliding table, and the part of the suspension frame is matched with the bolt through a strip-shaped protruding bolt hole to realize the fixation of the suspension frame of the magnetic suspension vehicle; still some suspension frames can have the slip of less range for the slip table, in order to realize the slip, need corresponding structure as follows:

in practice, as shown in fig. 14, the slipway further comprises four rigid wear strips 321;

the two wear-resistant strips 321 are fixed on one strip-shaped protrusion 312 and are fixed on two sides of the bolt hole of the strip-shaped protrusion, and a strip-shaped gap is formed between the two wear-resistant strips 321;

the strip-shaped gaps are matched with the raised strip-shaped structures of the suspension rack of the magnetic suspension vehicle, so that the strip-shaped gaps and the raised strip-shaped structures can slide in the length direction of the strip-shaped gaps relatively.

The effect of wear-resisting strip is at slip table and suspension frame junction increase frictional force, through bolt and the joint fixed connection jointly that splices between wear-resisting strip and the bearing structure. The strip-shaped gap and the suspension frame can slide in a smaller range.

Fig. 15 is a sectional view B-B shown in fig. 13. In practice, as shown in fig. 12 and 15, the lower end of the inner side of the supporting structure is provided with a concave avoidance port 313, and the length direction of the avoidance port 313 is perpendicular to the length direction of the strip-shaped protrusion;

wherein the avoidance opening 313 is used to avoid a brake line or other off-board equipment of the magnetic levitation vehicle.

And the avoidance port of the sliding table avoids a brake pipeline of the magnetic levitation vehicle or other equipment under the vehicle. The influence on the magnetic levitation vehicle is reduced.

In practice, as shown in fig. 12 and 13, the outside of the support structure is formed with a cover 314;

wherein the cover 314 is configured to cover the support structure and also function as a part of an under-vehicle skirt of the vehicle.

After the sliding table is fixed with the floor assembly of the magnetic levitation vehicle, the outer side of the supporting structure faces the outer side of the magnetic levitation vehicle and is in a direction which can be seen by people, and therefore the covering cover is arranged for covering.

In an implementation, the support structure is an integrally formed, one-piece structure support structure.

The supporting structure is the main body of the whole sliding table structure, plays a role in supporting the whole suspension frame, and is integrally formed, so that the supporting structure is good in integrity and high in rigidity and strength.

In the implementation, the wear-resistant strips are made of aluminum alloy materials or other materials;

the support structure is a support structure of carbon fiber material.

The support structure is made of carbon fiber materials, has a certain elastic deformation space and is small in weight, so that the overall weight of the sliding table is small, and the trend of light weight development of a magnetic suspension vehicle is adapted; the wear-resistant strips are made of aluminum alloy materials or other materials, so that the wear resistance of the wear-resistant strips is good.

In the implementation, the thickness of the wear-resistant strip is any value of more than or equal to 4 mm and less than or equal to 6 mm;

the wear-resistant strip is fixed with the supporting structure in a gluing and screwing mode.

The wear-resistant strip with the thickness can meet the requirement on the wear resistance degree; the wear-resistant strips are fixed with the supporting structure in a gluing and screwing mode, so that the wear-resistant strips and the supporting structure are more stably fixed.

Next, the structure of the traction buffer will be explained.

FIG. 16 is a perspective view of the draft gear of the undercarriage shown in FIG. 2; FIG. 17 is a top plan view of the draft cushioning device of FIG. 16; fig. 18 is a cross-sectional view taken at C-C of fig. 17.

As shown in fig. 1 and 2, a draft gear 200 is fixed to the floor assembly 100.

As shown in fig. 16, 17 and 18, the draft cushioning device 200 includes:

a traction buffer body 210 comprising a traction buffer cavity 211 and a traction buffer cavity filler layer 212; the traction buffer cavity filling layer 212 is filled in the hollow part of the traction buffer cavity 211, the traction buffer cavity 211 is a composite traction buffer cavity, the traction buffer cavity filling layer 212 is a composite traction buffer cavity filling layer, and the outer bottom end of the traction buffer cavity is used for being connected with the underframe of the magnetic levitation vehicle;

and the wear plate 220 is fixed on the front end surface of the traction buffer cavity and is used for being connected with a coupler of the magnetic suspension vehicle.

The wear-resisting plate of the traction buffer device is fixed on the front end face of the traction buffer cavity and is used for being connected with a coupler of a magnetic suspension vehicle, and the bottom end of the traction buffer body is used for being connected with an underframe of the magnetic suspension vehicle. The traction buffer body comprises a traction buffer cavity and a traction buffer cavity filling layer, the traction buffer cavity filling layer is filled in the hollow part of the traction buffer cavity, and the traction buffer cavity filling layer are made of composite materials, so that the density of the composite materials is smaller, and the weight of the whole traction buffer device is smaller; the traction buffering device does not need welding in the manufacturing process, and the manufacturing process is simpler. The traction buffering device provided by the embodiment of the application has the advantages that due to the adoption of the composite material traction buffering body, the weight of the traction buffering device is small, the traction buffering device is simple to manufacture, and the occupied space under a vehicle is small.

In implementation, as shown in fig. 16, 17 and 18, the traction buffer cavity 211 is a traction buffer cavity with a closed structure shaped like a Chinese character 'ri';

the wear plate 220 is fixed on the outer side of the front long frame plate of the traction buffer cavity.

The traction buffer cavity is of a closed structure shaped like a Chinese character 'ri', so that the stability of the structure of the traction buffer cavity is high, the wear-resisting plate is fixed on the outer side of the front long frame plate of the traction buffer cavity, namely, the outer side of the front long frame plate of the traction buffer cavity is the front end face of the traction buffer cavity.

In practice, as shown in fig. 16, 17 and 18, the supporting inner frame of the traction buffer cavity is a cavity structure, and the hollow part of the supporting inner frame is provided with reinforcing ribs 213 which are vertically arranged;

the traction buffer cavity filling layer 212 is also filled in the hollow parts at two sides of the reinforcing rib 213.

The reinforcing ribs vertically arranged on the hollow part of the support inner frame divide the hollow part of the support inner frame into two smaller hollow parts, and the small hollow parts on the two sides of the reinforcing ribs are also filled with a traction buffer cavity filling layer. Like this, the structure of support inside casing is more firm, and then makes whole traction buffer's structure also more firm.

In practice, as shown in fig. 16, 17 and 18, the front long frame plate of the traction buffer cavity has everted hollow columnar structures 214 at two ends, and the traction buffer cavity filling layer 212 is filled in the hollow parts of the hollow columnar structures;

the hollow columnar structure is provided with an upper bottom, a lower bottom and side faces, and the hollow columnar structure is communicated with the traction buffer cavity at the crossed position.

The hollow columnar structure is communicated with the traction buffer cavity, respective hollow parts are communicated, and the communicated hollow parts are filled with a traction buffer cavity filling layer. Due to the existence of the hollow columnar structure, the fixed position formed by the traction buffer device and the floor of the magnetic suspension vehicle is larger, and the traction force of the transfer car coupler is larger; meanwhile, the top of the hollow cylindrical structure can be used for fixing other components of the magnetic suspension vehicle, and an installation position is provided.

The density of foam is less than the density of carbon fiber material, like this, under the prerequisite of guaranteeing to pull buffering body intensity, pulls the weight of buffering body less, and the cost is also lower.

In implementation, the traction buffer body is an integrally formed integrated structure.

Therefore, the traction buffer body is not formed by fixedly connecting a plurality of parts together through connecting pieces, but is integrally formed into an integral structure, so that the structure of the traction buffer body is firmer.

In implementation, as shown in fig. 16, 17 and 18, the traction buffer cavity is provided with a wire hole 215;

the rear long frame plate of the traction buffer cavity is provided with two wire-passing holes 215, and each short frame plate of the traction buffer cavity is provided with one wire-passing hole 215.

The wiring hole is arranged, so that wiring space is reserved for wiring.

In practice, as shown in fig. 16, 17 and 18, the bottom end of the traction buffer cavity is provided with an inward convex fixing inner flange 216, and the fixing inner flange is provided with a bolt hole;

the fixing inner flange 216 is used for fixing with the floor of the magnetic levitation vehicle through bolts and bolt holes of the fixing inner flange, and the bottom end of the traction buffer cavity is further used for being fixed with the floor of the magnetic levitation vehicle through gluing.

The inner flange for fixing is arranged on the inner side of the traction buffer cavity, so that the peripheral space on the left side and the right side of the traction buffer cavity is saved.

In implementation, as shown in fig. 16, 17 and 18, fixing outer flanges 217 are respectively formed between the bottom end of the rear long frame plate of the traction buffer cavity, the bottom ends of the two hollow columnar structures, and the bottom end of the front long frame plate of the traction buffer cavity and the two hollow columnar structures;

the fixing outer flange 217 is used for passing through a bolt, the bolt hole of the fixing outer flange and the floor of the magnetic suspension vehicle are fixed in a combined mode, and the bottom end of the traction buffer cavity is further used for being fixed with the floor of the magnetic suspension vehicle in a bonded mode.

Therefore, the inner side and the outer side of the rear long frame plate of the traction buffer cavity and the inner side and the outer side of the front long frame plate of the traction buffer cavity are glued and screwed with the floor of the magnetic suspension vehicle, so that the traction buffer device and the floor of the magnetic suspension vehicle are fixed more stably.

In the implementation, the wear-resisting plate is an aluminum plate with any thickness of more than or equal to 5 and less than or equal to 10 millimeters, and is fixed on the outer side of the front long frame plate of the traction buffer cavity through gluing and screwing;

the thickness of the single-layer cavity wall of the traction buffer cavity is any value of more than or equal to 15 mm and less than or equal to 20 mm.

The traction buffering cavity and the wear-resisting plate are thick, and the traction buffering device can achieve enough strength.

In an implementation, as shown in fig. 1 and 2, the chassis further includes:

the testing device 400 is arranged at one end of the head end beam 113 facing the vehicle head direction, and is connected with the floor assembly in a bolting and riveting mode;

the test apparatus 400 is used for testing a magnetic levitation vehicle or for towing a magnetic levitation vehicle.

In implementation, the underframe also provides mounting interfaces for other structures, such as mounting interfaces for side walls, end walls and a cab of a vehicle body, mounting interfaces for a center pin of the suspension frame, mounting interfaces for equipment under the vehicle, mounting interfaces for braking and the like.

Carry out two

The magnetic levitation vehicle of the embodiment of the application comprises the base plate of the first embodiment.

In the description of the present application and the embodiments thereof, it should be understood that the terms "top", "bottom", "height", and the like, are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present application.

In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An underframe for a magnetic levitation vehicle is characterized by comprising a floor assembly and a plurality of sliding tables;

the floor panel assembly comprises:

the floor framework is made of composite materials;

a rigid frame secured to a side edge of the floor frame;

the lower panel is fixed on the lower surface of the floor framework and is a lower panel made of composite materials;

the sliding table comprises a support structure made of composite materials, and the support structure is fixed on the upper surface of the upper panel;

filling honeycomb aluminum into an inner space defined by the floor framework and the framework to form a floor framework filling layer, and pre-burying a structural member in the floor framework filling layer;

the floor skeleton includes:

a plurality of longitudinal beams, the length of the longitudinal beams is along the length direction of the magnetic suspension vehicle;

the cross beams are arranged at intervals along the length direction of the longitudinal beam and are intersected and fixed with the longitudinal beam, and two ends of each cross beam protrude out of the longitudinal beam;

the head end beam is fixed at the head end of the middle longitudinal beam, and the head ends of the side longitudinal beams are shorter than the middle side beam;

the side longitudinal beams are longitudinal beams positioned on two side edges, and the middle side beam is a longitudinal beam positioned between the two side longitudinal beams;

the floor panel assembly further comprises:

the multiple groups of door position reinforcing beams are arranged on the floor at intervals to form positions corresponding to doors for installing the magnetic suspension vehicle;

the door position reinforcing beam is of a U-shaped structure with a widened opening;

wherein the first longitudinal beam, the second longitudinal beam and the third longitudinal beam are three side beams which are sequentially arranged from the outer side to the inner side of each side beam;

the door position reinforcing beam comprises steps, a door position reinforcing beam and a door position reinforcing beam, wherein the end parts of longitudinal arms of the door position reinforcing beam are outwards unfolded;

door position reinforcing roof beam and one the crossbeam is crossing fixed, the position of the opening widen of door position reinforcing roof beam is located the outside of first longeron.

2. The chassis of claim 1, wherein the floor frame and the lower panel are formed as a first composite assembly using a co-curing process;

the frame and the first composite assembly are formed by adopting a normal-temperature curing process and are used as a first mixed assembly;

the first mixing component and the upper panel are fixed through threaded connection and gluing.

3. The undercarriage of claim 2 wherein said floor frame is a carbon fiber floor frame, said upper panel is an upper panel of carbon fiber material, and said lower panel is a lower panel of carbon fiber material;

the frame is a frame of aluminum profiles.

4. The undercarriage of claim 3 wherein said floor assembly further comprises:

5. The chassis of claim 4, wherein the slip table position reinforcing beam further comprises a semi-U-shaped head slip table position reinforcing beam, the head slip table position reinforcing beam is fixedly intersected with the first longitudinal beam and the second longitudinal beam, the head slip table position reinforcing beam is fixedly intersected with one surface of the first cross beam facing the head end beam, and the head slip table position reinforcing beam is used for reinforcing a head section of the longitudinal beam;

the middle sliding table position reinforcing beam is fixedly intersected with the first longitudinal beam, an opening of the middle sliding table position reinforcing beam faces outwards, and a transverse arm is positioned between the first longitudinal beam and the second side beam;

the sliding table position reinforcing beam also comprises a tail sliding table position reinforcing beam with a special-shaped U-shaped end part, the tail sliding table position reinforcing beam is fixedly intersected with the first longitudinal beam and the second longitudinal beam, an opening of the end part special-shaped U-shaped sliding table position reinforcing beam faces outwards, and a transverse arm is positioned between the first longitudinal beam and the second lateral beam; and the tail sliding table position reinforcing beam is used for reinforcing the tail section of the longitudinal beam.

6. The undercarriage of claim 5 wherein said head end beam is a rectangular frame in cross-section;

the longitudinal beam is a longitudinal beam with a cross section in a shape like a Chinese character 'ji', a turned-over edge turned outwards at the bottom of the longitudinal beam is fixed with the upper surface of the lower panel, and the outer top of the longitudinal beam is fixed with the lower surface of the upper panel;

the cross beam is a cross beam with a rectangular frame in cross section, the outer bottom of the cross beam is fixed to the upper surface of the lower panel, and the outer top of the cross beam is fixed to the lower surface of the upper panel.

7. The chassis of claim 6, wherein the frame is a U-shaped frame;

the end of the beam of the floor framework is fixedly bonded with the inner side of the vertical arm of the frame, and the end of the longitudinal beam of the floor framework is fixedly bonded with the inner side of the transverse arm of the frame.

8. The chassis of claim 7, wherein a concave upper panel escape portion is provided at a position of the vertical arm and the horizontal arm of the frame for fixing with the upper panel, and the upper panel escape portion are fixed;

and a lower panel avoiding part which is concave upwards is arranged at the position, fixed with the lower panel, of the vertical arm and the transverse arm of the frame, and the lower panel avoiding part are fixed.

9. The chassis of claim 8, wherein the slide table comprises:

a support structure of composite material having a fixation flange at a bottom end thereof, the fixation flange having a plurality of fixation flange bolt holes;

wherein, bearing structure's top be used for with magnetic suspension vehicle's suspension frame is connected, the fixed flange bolt hole be used for with the bolt cooperation, adopt simultaneously to glue, thereby realize the slip table with the fixed of magnetic suspension vehicle's floor constitution.

10. The chassis according to claim 9, wherein the top end of the supporting structure has two opposite strip-shaped protrusions, and an avoiding space is formed between the two strip-shaped protrusions;

11. The undercarriage of claim 10 wherein said strip-shaped projections have strip-shaped projection bolt holes spaced apart along a length thereof;

the strip-shaped protruding bolt holes are used for being matched with bolts to achieve connection of a suspension frame of the magnetic suspension vehicle.

12. The undercarriage of claim 11 wherein said skid further comprises four rigid wear strips;

the two wear-resistant strips are fixed on one strip-shaped bulge and are fixed on two sides of the bolt hole of the strip-shaped bulge, and a strip-shaped gap is formed between the two wear-resistant strips;

13. The chassis of claim 12, wherein the lower end of the inner side of the supporting structure is provided with an inward concave avoiding opening, and the length direction of the avoiding opening is perpendicular to the length direction of the strip-shaped protrusion.

14. The chassis of claim 13, wherein an outer side of the support structure is formed with a cover;

wherein the cover is configured to cover the support structure.

15. The undercarriage of claim 14 wherein said support structure is an integrally formed, one-piece structural support structure.

16. The chassis of claim 15, wherein the wear strips are of aluminum alloy material;

the support structure is a support structure of carbon fiber material.

17. The chassis of claim 16, wherein the thickness of the wear strips is any value from 4 mm to 6 mm;

18. The undercarriage of any one of claims 1 to 17 further comprising traction cushioning means secured to said floor assembly; the traction buffering device comprises:

the traction buffer body comprises a traction buffer cavity and a traction buffer cavity filling layer; the traction buffer cavity filling layer is filled in the hollow part of the traction buffer cavity, the traction buffer cavity is made of composite materials, the traction buffer cavity filling layer is made of composite materials, and the outer bottom end of the traction buffer cavity is used for being connected with the underframe of the magnetic suspension vehicle;

and the wear-resisting plate is fixed on the front end surface of the traction buffer cavity and is used for being connected with a car coupler of the magnetic levitation vehicle.

19. The undercarriage of claim 18 wherein said draft cushion pocket is a closed-gabled draft cushion pocket;

the wear-resisting plate is fixed on the outer side of the front long frame plate of the traction buffer cavity.

20. The undercarriage of claim 19, wherein the support inner frame of the draft cushion pocket is a pocket structure, and the hollow portion of the support inner frame has vertically disposed ribs;

the traction buffer cavity filling layer is also filled in the hollow parts at two sides of the reinforcing rib.

21. The underframe of claim 20, wherein the two ends of the front long frame plate of the traction buffer cavity are provided with everted hollow columnar structures, and the traction buffer cavity filling layer is further filled in the hollow parts of the hollow columnar structures;

22. The undercarriage of claim 21 wherein said draft cushion cavity is a draft cushion cavity of carbon fiber material and said draft cushion cavity filler layer is a draft cushion cavity filler layer of foam formed of polymethacrylimide material.

23. The undercarriage of claim 22 wherein the draft cushioning body is a unitary, integrally formed structure.

24. The chassis of claim 23, wherein the traction buffer cavity is provided with a wiring hole;

the rear long frame plate of the traction buffer cavity is provided with two wire running holes, and each short frame plate of the traction buffer cavity is provided with one wire running hole.

25. The undercarriage of claim 24 wherein the bottom end of the draft cushioning cavity has an inwardly projecting inner securing flange having bolt holes;

the inner fixing flange is used for being fixed with the floor of the magnetic suspension vehicle through bolts, bolt holes of the inner fixing flange are used for being fixed with the floor of the magnetic suspension vehicle, and the bottom end of the traction buffer cavity is further used for being fixed with the floor of the magnetic suspension vehicle through glue joint.

26. The undercarriage of claim 25 wherein a bottom end of said rear elongated frame plate of said draft cushioning well, bottom ends of said two hollow columnar structures, and a bottom end of said front elongated frame plate of said draft cushioning well and said two hollow columnar structures each have a securing outer flange formed therebetween;

the fixed outer flange is used for passing through a bolt, the bolt hole of the fixed outer flange and the floor of the magnetic suspension vehicle are fixed in a combined mode, and the bottom end of the traction buffer cavity is further used for being fixed with the floor of the magnetic suspension vehicle in a combined mode through gluing.

27. The underframe of claim 26, wherein the wear-resisting plate is an aluminum plate with any thickness of 5 mm or more and 10 mm or less, and is fixed on the outer side of the front long frame plate of the traction buffer cavity through gluing and screwing;

28. The chassis of claim 26, further comprising:

the testing device is arranged at one end, facing the vehicle head direction, of the head end beam and is connected with the floor assembly in a bolting connection and riveting mode.

29. A magnetic levitation vehicle comprising the chassis of any of claims 1 to 28.