CN108657212B

CN108657212B - Underframe of train and train head car

Info

Publication number: CN108657212B
Application number: CN201710210126.5A
Authority: CN
Inventors: 李海周; 王民雄; 姚刘兵; 刘宇; 王玉斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2023-11-14
Anticipated expiration: 2037-03-31
Also published as: CN108657212A

Abstract

The invention discloses a chassis of a train and a train head vehicle, wherein the chassis of the train comprises chassis side beams, the chassis side beams extend along the front-back direction, and the chassis side beams comprise two left and right arranged at intervals; the floor section is arranged between the two underframe side beams; the front side and the rear side of the floor section are respectively provided with a bogie installation seat, and the bogie installation seats are respectively connected with the floor section and the underframe boundary beam. The underframe of the train provided by the embodiment of the invention has high structural strength.

Description

Underframe of train and train head car

Technical Field

The invention relates to the technical field of transportation, in particular to a train underframe and a train head train with the underframe.

Background

The light rail train in the related art adopts an all-steel underframe structure, the underframe has larger weight, the whole vehicle weight is increased, and when the normal starting and acceleration of the vehicle are ensured, larger power is required, and larger braking friction or longer parking distance is required in the braking process; meanwhile, the underframe is connected with the side wall, the end wall and the headstock in a riveting mode, so that the whole vehicle is poor in air tightness and high in manufacturing cost.

In addition, the bogie adopts a traction and bolster buffering structure, and the minimum turning radius of the whole car body is larger when the car body runs due to the influence of the car length, the car width, the wheelbase and the wheel tread of the whole car, so that the adaptability of urban rail transit is reduced.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a chassis of a train, which has high structural strength.

The invention also provides a train head vehicle with the underframe.

The underframe of the train comprises underframe side beams, wherein the underframe side beams extend in the front-rear direction, and the underframe side beams comprise two side-to-side arranged at intervals; the floor section is arranged between the two underframe side beams; the front side and the rear side of the floor section are respectively provided with a bogie installation seat, and the bogie installation seats are respectively connected with the floor section and the underframe boundary beam.

According to the underframe of the train, the floor section is adopted, and the bogie mounting seat is arranged, so that the underframe is reasonable in arrangement, and the structural strength of the underframe and the supporting strength of wheels can be improved.

In addition, the underframe of the train according to the embodiment of the invention can also have the following additional technical characteristics:

in one embodiment of the invention, a downwardly extending fifth wheel is connected to the underside of the truck mount.

In one embodiment of the invention, the truck mount comprises: the cross beam extends in the left-right direction and comprises two front and rear arranged at intervals; the bogie comprises a bogie mounting profile which is arranged between two cross beams, wherein a cavity suitable for wheels to pass through is defined between the two cross beams, the traction seat is connected to the lower surface of the cross beams and extends downwards, and the traction seat comprises one or a plurality of traction seats which are arranged at intervals left and right.

In one embodiment of the invention, the fifth wheel is provided on one of the two cross beams adjacent to the floor profile.

In one embodiment of the invention, the floor profile is formed by welding an extruded profile.

In one embodiment of the invention, the floor profile comprises: an upper plate; the lower plate is arranged below the upper plate in parallel; the reinforcing ribs are arranged between the upper plate and the lower plate and are respectively connected with the upper plate and the lower plate, extend along the front-back direction and comprise a plurality of left-right arranged reinforcing ribs, and are obliquely arranged in the vertical direction and are in wave shape between the upper plate and the lower plate.

In one embodiment of the invention, the floor section comprises a plurality of floor sections which are connected in sequence from left to right, and two adjacent floor sections are in plug-in welding connection.

In one embodiment of the invention, one of two adjacent floor profiles is provided with a slot extending in the front-rear direction and the other is provided with a plug corresponding to the slot, and the plug is inserted into the slot.

In one embodiment of the invention, the plug comprises a first cutting and a second cutting which are arranged at intervals up and down, wherein the first cutting is abutted against the inner top surface of the slot, and the second cutting is abutted against the inner bottom surface of the slot.

In one embodiment of the invention, both the upper and lower surfaces of the floor profile are provided with "C" grooves.

In one embodiment of the invention, the floor profile is lap welded to the side rail.

In one embodiment of the invention, the truck mount is lap welded to the floor profile and the undercarriage boundary beam.

The invention also provides a train head vehicle, which comprises a chassis, wherein the left side and the right side of the chassis are connected with side walls extending upwards, the rear side of the chassis is connected with an end wall extending upwards, the end wall is connected with the rear side of the side walls, a vehicle roof which is respectively connected with the side walls and the end wall is arranged above the chassis, and the front side of the chassis is provided with a vehicle head which is respectively connected with the front side of the chassis, the front side of the side walls and the front side of the vehicle roof, wherein the chassis is the chassis of the train.

In one embodiment of the invention, the side wall is welded with the underframe in a lap joint or a plug welding way.

In one embodiment of the invention, the end wall is lap welded or plug welded to the chassis.

In one embodiment of the invention, the roof is welded to the side wall in a lap joint or in a plug-in welding.

In one embodiment of the invention, the upper part of the side wall is a vertical profile plate with a reinforcing rib constructed into a 'mouth' -shape.

In one embodiment of the invention, the lower part of the side wall is a vertical profile plate formed by adjacent reinforcing ribs into at least one of a triangle, a V, an H or an M shape.

In one embodiment of the invention, the side wall comprises three side wall boards which are connected in sequence, wherein each side wall board comprises a side wall section bar and a door stand column or an end stand column for supporting the side wall section bar.

In one embodiment of the present invention, the underframe, the end wall, the side wall, the roof and the headstock are all aluminum alloy sections.

Drawings

Fig. 1 is a schematic diagram of a trainhead in accordance with an embodiment of the present invention.

Fig. 2 is a schematic view of the undercarriage of a trainhead car in accordance with an embodiment of the present invention.

Fig. 2a is a cross-sectional view of section A-A of fig. 2.

FIGS. 2b and 2c are partial schematic views of the different positions of FIG. 2a, respectively

Fig. 3 is a front view of the trainhead illustrated in fig. 1 in accordance with an embodiment of the present invention.

Fig. 4 is a rear view of the trainhead illustrated in fig. 1 in accordance with an embodiment of the present invention.

Fig. 5 is an enlarged partial schematic view of the area indicated by circle a in fig. 4.

Reference numerals:

the train head car 1, the underframe 11, the underframe boundary beam 111, the floor section 112, the bogie mounting seat 113, the cross beam 1131, the bogie mounting section 1132, the traction seat 1133, the C-shaped groove 114, the side wall 12, the end wall 13, the roof 14 and the train head 15.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The invention provides a bottom plate of a train and a train head.

As shown in fig. 1 to 5, the underframe 11 of the train according to the embodiment of the present invention includes an underframe boundary beam 111 and a floor profile 112.

Specifically, the floor section 112 is connected to the chassis side beams 111, the chassis side beams extend in the front-rear direction, and the chassis side beams include two of left-right spaced arrangement, the floor section 112 is provided between the two chassis side beams 111, both the front side and the rear side of the floor section 112 are provided with the bogie mounting seats 113, and the bogie mounting seats 113 are connected to the floor section and the chassis side beams. By providing the truck mount 113, steering of the wheels can be facilitated.

According to the underframe 11 of the train, the structural strength is high, and the bogie mounting seat 113 is arranged, so that the steering of wheels can be facilitated, and the minimum turning radius of the train can be reduced to a certain extent.

In some embodiments of the present invention, a downwardly extending fifth wheel 1133 is attached to the bottom surface of the truck mount 113. The strength of the wheels during steering can be improved through the traction seat. Thereby reducing the minimum turning radius of the train.

Further, with reference to fig. 1 and 2, the bogie mount 113 includes: cross beam 1131, truck mounting profile 1132. The cross member 1131 extends in the left-right direction, and the cross member 1131 includes two spaced apart from each other. The bogie mounting profile 1132 is disposed between the two cross beams 1131, and the bogie mounting profile 1132 defines a cavity between the two cross beams 1131 adapted for the passage of a wheel. A fifth wheel 1133 is coupled to a lower surface of the cross member 1131 and extends downward, and the fifth wheel 1133 includes a plurality of fifth wheels arranged at a left-right interval. Providing the fifth wheel 1133 can improve the structural strength of the wheels and can reduce the achievable steering angle of the trainhead car 1.

Preferably, the fifth wheel 1133 is disposed on one of the two cross members 1131 that connects to the floor.

Advantageously, the floor profile 112 is formed by welding extruded profiles.

Further, as shown in fig. 4, the floor profile 112 includes an upper plate 1121, a lower plate 1122, and reinforcing ribs 1123, which are arranged at intervals up and down, the reinforcing ribs include a plurality of reinforcing ribs arranged at intervals between the upper plate and the lower plate, and the reinforcing ribs are respectively connected to the upper plate and the lower plate.

Further, the rib may extend in the front-rear direction, and further, the front-rear ends of the rib may extend to the front-rear edges of the upper plate 1121 and/or the lower plate 1122.

Preferably, the reinforcing ribs are disposed obliquely in the up-down direction, and the plurality of reinforcing ribs are disposed in a wavy shape between the upper plate and the lower plate.

The plurality of wavy reinforcing ribs can effectively improve the structural strength of the floor section, and the wavy shape comprises, but is not limited to, that two adjacent reinforcing ribs are arranged in a triangle shape.

Preferably, the floor profile 112 comprises a plurality of floor profiles connected in sequence from left to right, and the two adjacent floor profiles are plug-in welded connections.

Further, one of the two adjacent floor profiles is provided with a slot extending along the front-rear direction, and the other floor profile is provided with a plug corresponding to the slot, and the plug is inserted into the slot.

Advantageously, the plug comprises a first insert and a second insert arranged at intervals up and down, the first insert being against the inner top surface of the socket and the second insert being against the inner bottom surface of the socket.

Further, referring to fig. 4 and 5, the upper and lower surfaces of the floor profile are provided with a plurality of C-shaped grooves 114, and the C-shaped grooves 114 are used for mounting electric devices and interior floors. The C-shaped groove 114 is provided, so that electrical equipment, interior trim of the train head car 1 and the like can be conveniently installed on the train head car 1, and the assembly efficiency of the train head car 1 is improved.

Advantageously, the floor profile 112 is lap welded to the side rail.

In addition, the bogie mounting seat is in lap welding connection with the floor section bar and the underframe boundary beam.

The trainhead 1 of the embodiment of the present invention is described below with reference to the drawings.

Referring to fig. 1 to 4, a train head 1 according to an embodiment of the present invention includes a chassis 11, side walls 12 extending upward are connected to left and right sides of the chassis 11, an end wall 13 extending upward is connected to a rear side of the chassis 11, the end wall 13 is connected to a rear side of the side walls 12, a roof 14 connected to the side walls 12 and 13 respectively is provided above the chassis 11, and a head 15 connected to a front side of the chassis 11, a front side of the side walls 12 and a front side of the roof 14 respectively is provided on a front side of the chassis 11. The underframe 11, the two side walls 12, the end wall 13 and the locomotive 15 form a train head and train 1 structure. Wherein the underframe 11 is the underframe of the train according to the previous embodiment of the invention.

Advantageously, the underframe 11, the end wall 13, the side wall 12, the roof 14 and the head 15 are all aluminium alloy profiles. The mass of the train head 1 can be reduced, and the structural strength of the train head 1 is improved, so that the resistance and the friction force in the running process of the train head 1 can be reduced, energy conservation and environmental protection can be realized, and the static friction force of the train head 1 can be reduced, so that the starting speed of the train head 1 is improved.

In one embodiment of the invention, the side walls 12 are lap welded or plug welded to the chassis 11, the end walls 13 are lap welded or plug welded to the chassis 11, and the roof 14 is lap welded or plug welded to the side walls 12 and the end walls 13.

In the process of manufacturing the profile, compared with the profile with other shapes, the process for manufacturing the 'mouth' -shaped profile is simple, in order to realize the unification of simplified process and strength, the upper part of the side wall does not form a vertical profile plate with the 'mouth' -shaped profile for the reinforcing ribs, and the lower part of the side wall is arranged to be a vertical profile plate with at least one of the adjacent reinforcing ribs forming a triangle, the 'V' -shaped, the 'H' -shaped or the 'M' -shaped profile.

Wherein, the section bar includes the polylith board of mutual parallel arrangement, has set up the strengthening rib between two boards, and wherein, "mouthful" shape section bar is adjacent two strengthening ribs and two boards constitute "mouthful" shape, and triangle-shaped, "V" shape, "H" shape or "M" shape section bar is adjacent the strengthening rib constitutes triangle-shaped, "V" shape, "H" shape or "M" shape.

In addition, in one embodiment of the present invention, a sunk air conditioner is provided on the roof 14, and the upper surface of the air conditioner is flush with the upper surface of the roof 14. The air conditioner is arranged into a sinking structure, so that the height of the train head car 1 can be reduced, and the resistance of the sunk air conditioner in the running process of the train head car 1 can be reduced.

Further, the roof 14 includes: roof side rail, roof section bar and air conditioner board, roof section bar links to each other with roof side rail, and roof section bar constructs the arc platy. The air conditioner board is connected with the roof section bar and extends downwards, and the air conditioner is installed on the air conditioner board.

Advantageously, a drain is provided underneath the air conditioning panel, and is connected to a drain pipe connected to the underside of the chassis 11.

Further, the side wall 12 comprises three side wall 12 plates connected in sequence, each side wall 12 plate comprises a side wall 12 profile and a door upright or an end upright for supporting the side wall 12 profile.

A trainhead 1 according to a specific embodiment of the present invention will be described below with reference to the drawings.

The train head 1 is formed by assembling and welding large hollow aluminum alloy sections with the whole length of a train body, and is of a cylindrical integral bearing structure. The car body bearing structure is formed by an underframe 11, a side wall 12, a car roof 14, an end wall 13 and a car head 15 into a whole, so that the car body has good shock absorption and sound insulation effects. The whole vehicle is connected in a full-welding mode, and has good corrosion resistance.

The section bar connection mode of the underframe 11, the side wall 12 and the roof 14 adopts the lap joint and the plug-in connection mode. The connecting mode can ensure that the length tolerance of the side wall 12 and the roof 14 does not affect the whole vehicle body composition, and even if the side wall 12 and the roof 14 have a certain size difference with the underframe 11 in the length direction, the connecting mode of grinding the connecting plates can be adopted.

Fig. 2 shows the structure of the chassis 11. The underframe 11 is a foundation formed by the train head 1, and the running gear, the continuous buffer device and the suspension of the equipment of the train are all directly connected with the underframe 11. The underframe 11 of the train head car 1 consists of an underframe boundary beam 111, a floor section 112 and a bogie mounting seat 113. The floor section 112 is formed by welding a hollow extrusion section with a through length. The wall thickness of the upper and lower surfaces of the floor is thin, and the weight is reduced to the greatest extent while the rigidity and strength of the chassis 11 are sufficiently satisfied. The floor section bars 112 are connected in a splicing welding mode, and the floor section bars 112 and the side beams are in a lap welding mode, so that the overall width dimension tolerance of the underframe 11 is ensured to the greatest extent. Meanwhile, a plurality of C-shaped grooves 114 are arranged on the upper surface and the lower surface of the floor, the C-shaped grooves 114 on the lower surface of the underframe 11 are main installation points of electric equipment, and the C-shaped grooves 114 on the upper surface of the underframe 11 mainly provide installation points for an interior floor.

The bogie mounting seat 113 structure of the train head car 1 is formed by assembling and welding a cross beam 1131, a bogie mounting profile 1132 and a traction seat 1133. The structure is a hollow structure, and the tire is arranged half below the vehicle underframe 11 and half above the vehicle underframe 11. Therefore, the height of the whole vehicle body can be reduced, the gravity center of the whole vehicle is reduced, and the stability of the vehicle body is improved. The bogie traction seat 1133 is slowly added with an intermediate traction seat 1133 compared with traction pillows of other vehicle types. When the vehicle body turns or receives lateral force, the middle traction seat 1133 can share the lateral force, so that the relative displacement between the mounting seat and the vehicle body is reduced; the stability of the vehicle body is increased, the turning radius of the vehicle can be reduced, and the vehicle can be more suitable for complex urban air traffic conditions.

The side wall 12 structure of the train head car 1. The side walls 12 are left and right sides, the side walls 12 on the two sides are symmetrically distributed, each side is composed of 3 side wall 12 plates, each side wall 12 plate is composed of side wall 12 profiles and door uprights or end uprights, and windows are arranged on the rear four side wall 12 plates. The side wall 12 panels are connected to the chassis 11, the end wall 13 and the roof 14.

Roof 14 structure, roof 14 comprises roof side rail, air conditioner board and roof section bar. The air conditioner is placed in a sinking mode. The sinking placement of the air conditioner can keep the radian of the upper surface of the air conditioner consistent with that of the roof 14, and the flow linearity of the vehicle body is increased. Meanwhile, the air inlet and the air outlet of the sinking air conditioner are tightly attached to the vehicle body, so that the tightness is improved. Furthermore, a submerged air conditioner drain is placed under the air conditioner. The air-conditioning wastewater and rainwater enter from the air-conditioning water outlet and are directly communicated to the lower surface of the vehicle body underframe 11 through the pipeline to be discharged, so that the scouring and erosion of the air-conditioning wastewater to the paint surfaces of the roof 14 and the side walls 12 are reduced.

The head 15 structure of the train head 1. The exterior of the structure of the headstock 15 is wrapped by a glass fiber reinforced plastic hood, is streamline and meets aerodynamic requirements. Inside is skeleton framework, provides the mounting point for glass steel. The whole head 15 is designed to meet the energy absorption when an accidental collision occurs.

The air inlet and outlet edge of the air conditioner and the traction rod mounting seat of the underframe 11 are formed by welding a plurality of plates, the welding workload is huge and the deformation after welding is large in the later welding composition, and the positions can be considered to be changed into extruded profile structures in the later period.

In addition, some section bar sections in the structure are more complicated, extrusion forming is more difficult, the yield is relatively low, and the section structure can be properly simplified on the premise of meeting the rigidity and strength.

The all-aluminum alloy vehicle body is used in the structure, and can realize all-welded connection, so that the overall strength and the corrosion resistance are improved. Meanwhile, the weight of the whole aluminum alloy car body is reduced, and the bogie mounting seat 113 is used for replacing a traction and bolster buffering structure, so that the minimum turning radius of the car body can reach 50m, and the car body can be more suitable for the complex condition of urban air traffic.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. A undercarriage for a train, comprising:

the chassis side beam extends along the front-back direction and comprises two left and right arranged at intervals;

the floor section is arranged between the two underframe side beams;

the front side and the rear side of the floor section are respectively provided with a bogie mounting seat, and the bogie mounting seats are respectively connected with the floor section and the underframe boundary beam;

the bottom surface of the bogie installation seat is connected with a traction seat which extends downwards;

the floor profile comprises:

an upper plate;

and the lower plate is arranged below the upper plate in parallel.

2. The undercarriage of a train of claim 1 wherein the bogie mount comprises:

the cross beam extends in the left-right direction and comprises two front and rear arranged at intervals;

a bogie-mounting profile provided between the two cross beams, the bogie-mounting profile defining a cavity between the two cross beams adapted for the passage of a wheel,

the traction seat is connected to the lower surface of the cross beam and extends downwards, and the traction seat comprises one or a plurality of traction seats which are arranged at intervals left and right.

3. The undercarriage of a train of claim 2 wherein said fifth wheel is provided on one of said two cross members adjacent said floor profile.

4. The undercarriage of a train of claim 1 wherein the floor profile is formed by welding extruded profiles.

5. The underframe of the train as recited in claim 4, wherein said floor profile further comprises reinforcing ribs provided between and respectively connected to said upper plate and said lower plate, said reinforcing ribs extending in a front-rear direction and including a plurality of left-right arranged, and said reinforcing ribs being disposed obliquely in a top-bottom direction and a plurality of said reinforcing ribs being arranged in a wave shape between said upper plate and said lower plate.

6. The undercarriage of a train of any one of claims 1-5 wherein said floor profile comprises a plurality of said floor profiles connected in sequence from left to right, and adjacent two of said floor profiles are in a plug-in welded connection.

7. The underframe of the train as claimed in claim 6, characterized in that one of the two adjacent floor profiles is provided with a slot extending in the front-rear direction and the other is provided with a plug corresponding to the slot, the plug being inserted into the slot.

8. The undercarriage of a train of claim 7 wherein the plug comprises first and second slips arranged in a top-to-bottom spaced relationship, the first slip bearing against an inner top surface of the socket and the second slip bearing against an inner bottom surface of the socket.

9. The undercarriage of a train of claim 1 wherein the upper and lower surfaces of the floor profile are each provided with a "C" shaped groove.

10. The undercarriage of a train of claim 1 wherein the floor profile is lap welded to the side rail.

11. The undercarriage of a train of claim 1 wherein said truck mount is lap welded to said floor profile and said undercarriage boundary beam.

12. The train head car is characterized by comprising a bottom frame, wherein the left side and the right side of the bottom frame are connected with side walls extending upwards, the rear side of the bottom frame is connected with an end wall extending upwards, the end wall is connected with the rear side of the side wall, a car roof which is respectively connected with the side wall and the end wall is arranged above the bottom frame, the front side of the bottom frame is provided with a car head which is respectively connected with the front side of the bottom frame, the front side of the side wall and the front side of the car roof,

wherein the undercarriage is an undercarriage of a train according to any one of claims 1-11.

13. The trainhead of claim 12 wherein the side wall is lap welded or plug welded to the undercarriage.

14. The trainhead of claim 12 wherein the headwall is lap welded or plug welded to the undercarriage.

15. The trainhead of claim 12 wherein the roof is lap welded or plug welded to the side wall.

16. The railcar according to claim 12, wherein the upper portion of the side wall is a vertical profile plate with a reinforcing rib configured in a "mouth" shape.

17. The railcar according to claim 12 or 16, wherein the lower portion of the side wall is a vertical profile plate configured with adjacent reinforcing ribs in at least one of a triangle, "V", "H" or "M" shape.

18. The trainhead according to claim 12, wherein the side wall comprises three side wall panels connected in sequence, each side wall panel comprising a side wall profile and a door or end pillar for supporting the side wall profile.

19. The trainhead of claim 12, wherein the undercarriage, the headwall, the side walls, the roof, and the headstock are all aluminum alloy profiles.