WO2018218941A1

WO2018218941A1 - End portion structure of hinged multiple unit train body chassis

Info

Publication number: WO2018218941A1
Application number: PCT/CN2017/118290
Authority: WO
Inventors: 苏永章; 王赵华; 李涛; 苏柯; 张海波
Original assignee: 中车株洲电力机车有限公司
Priority date: 2017-06-02
Filing date: 2017-12-25
Publication date: 2018-12-06
Also published as: PL3632766T3; CN107187458B; CN107187458A; EP3632766B1; RS63842B1; EP3632766A1; EP3632766A4

Abstract

An end portion structure of a hinged multiple unit train body chassis, comprising: two side beams (5), two traction beams (2), which are parallel to the side beams, being provided between the two side beams, and bolsters (3) being provided between the side beams and two sides of the two traction beams which are located in a train end connection area, respectively; an end of the two side beams and the traction beams, which is located in a passenger compartment channel area, is perpendicularly connected to a partition wall (6) such that the overall train body chassis forms a 目-shaped frame structure; the two bolsters are provided thereon with air spring mounting holes (31), respectively; bottom portions of ends of the two traction beams, which are located at the train end connection area, are provided with hinge seats (1), respectively; bottom surfaces of the traction beams and the bolsters are fixedly connected to a hinged support structure (4), and an end of the hinged support structure is connected to rear sides of the hinge seats, while another end is connected to the partition wall; an upper portion of the hinged support structure is provided with a middle floor board (41), and side floor boards (8) are provided between upper portions of the two traction beams and upper portions of the side beams at a corresponding side such that the cross section direction of the train body chassis forms a downward concave structure.

Description

End structure of an articulated EMU car body underframe

Technical field

The invention relates to a rail vehicle body underframe structure, in particular to an end structure of an articulated EMU vehicle body chassis.

Background technique

At present, the hook connection device is generally used for the connection between the domestic EMU vehicles. However, there are many countries with small land areas, the speed requirements for EMUs are not too high, and the focus is on the lines with smaller turning radii. Therefore, some foreign vehicle operators need to use articulated bogies for the EMUs.

The most successful case of articulated bogies abroad is the French TGV and AGV high-speed trains. The bogies are 2-point suspension without bolster articulated, but the articulated bogies have a higher floor height. Therefore, the vehicle operator considers that the upper and lower vehicles are convenient, and the vehicle is required to set the intermediate passage. The height of the vehicle is low, and can only be solved by designing the concave structure in the middle, which is not conducive to the bearing and transmission of the vehicle body, and the vehicle body is added. Design difficulty.

In China, there are few studies on articulated EMUs, and there are many articulated connections on low-floor vehicles and light rail vehicles, and the vehicles are mainly ram-armed bogies. It has the characteristics of strong ability to pass a small labyrinth radius, but the axle weight is small, generally around 10 tons.

In order to solve the axle load requirement of the EMU, the 4-point suspension bolster-free articulated bogie can be used to solve the problem, that is, the articulated traction device is used to carry the vehicle body through four air springs. At the same time, however, the conventional car body underframe structure can not meet the installation and connection of the new bogie, so it is urgent to develop a new car body chassis end structure.

Summary of the invention

The technical problem to be solved by the present invention is that, in view of the deficiencies of the prior art, an end structure of an articulated EMU body frame that can be mounted and connected with a 4-point suspension bolster-free articulated bogie is provided.

In order to solve the above technical problem, the technical solution adopted by the present invention is: an end structure of an articulated EMU car body underframe, comprising two parallel longitudinally disposed side beams, and the two side beams are arranged parallel to the side beams. The traction beam, the bolster is laterally disposed between the two sides of the traction beam and the side beam at the connection end of the vehicle end, and the two side beams and the traction beam are vertically connected to the partition wall at one end of the passenger passage area, and the traction beam is two And two traction beams are arranged in parallel and longitudinally symmetrically, the bolsters are two, and the two bolsters are respectively disposed outside the two traction beams, so that the vehicle body chassis integrally forms a "mesh" frame structure; two pillows An air spring mounting hole connected to the air spring of the bogie is respectively disposed on the beam; the bottom of the two traction beams at the connection end region of the vehicle is provided with a hinge seat for connecting with the hinge device of the bogie; two traction beams and two pillows The lower surface of the beam is fixedly connected with the hinge support structure, and one end of the hinge support structure is connected to the rear of the hinge seat, and the other end is connected with the partition wall; the upper surface of the hinge support structure is directly provided with the middle floor, and two They are provided between the side beams of a side surface of the upper floor surface and the corresponding side of the beam, so that the cross-sectional direction of the car body underframe concave-like structure is formed.

In the above solution, the hinge seat, the traction beam, the bolster beam, the side beam and the partition wall are all made of hollow aluminum profiles, so that not only the weight of the body frame is reduced, but also the partial cavity of the traction beam and the side beam can be Removal, it provides the possibility to set different heights for the upper surface of the passenger compartment passage area and the vehicle end connection area, and lays a foundation for the installation of the bottom equipment of the vehicle body underframe.

In the above solution, the second traction beam cavity and the first traction beam cavity are disposed from the top to the bottom of the profile of the traction beam, and the second traction beam cavity located in the passenger passage area is completely removed, so that the first traction The top of the beam cavity forms a U-shaped U-shaped cross-sectional direction, the side floor is located behind the bolster and is flush with the lower surface of the second traction beam cavity, so that the traction beam of the vehicle end connection region The upper surface, the upper surface of the bolster and the upper surface of the side sill are flush, and the upper surface of the passenger compartment passage area is lower than the upper surface of the vehicle end connection area.

In the above solution, the bottom of the first traction beam cavity is provided with a vertical plate joint connected with the hinge support structure to prevent the weld of the important force transmitting portion from appearing in the sudden change position of the rigidity.

In the above solution, the first traction beam cavity is machined with an L-shaped defect having an L-shaped cross-sectional direction.

In the above solution, the hinge support structure is composed of the intermediate floor located in the middle of the upper surface, the connecting floor on both sides of the upper surface, the supporting vertical plate located under the intermediate floor and the connecting floor, and the supporting cover on the lower surface. Made.

In the above solution, the connecting plane of the hinge seat and the hinge device mounting hole thereon, the mounting plane of the bolster and the air spring mounting hole thereon are completed in the "mesh" frame structure and the side floor assembly welding After the overall processing, to reduce the perpendicularity of the welding deformation to the joint plane of the hinged seat and the ground, and the adverse effect of the parallelism between the bolster mounting plane and the edge floor.

In the above solution, the side beam cavity gap is processed in the middle section of the side structure of the end frame of the articulated EMU, so as to ensure that the bogie frame and the wheelset have sufficient working space during the running of the vehicle. .

In the above solution, a cavity boss is arranged between the partition wall and the hinge support structure for transitioning the longitudinal impact force of the hinge support structure, and the cavity can provide the connection and passage space of the brake pipe and the cable line. .

In the above solution, the side girders and the partition wall joints under the frame structure, and the transition ribs at the joints of the traction beam and the bolster beam are provided, so that the rigidity of the end structure of the chassis is more coordinated.

In the above solution, the upper surface of the side beam of the side beam is aligned with the lower surface of the bolster, and the upper surface of the second traction beam cavity of the traction beam is aligned with the upper surface of the bolster, so that the passenger compartment area is The upper surface is lower than the upper surface of the vehicle end connection region.

In the above solution, the lower height of the hinge support structure is lower than the at least one row of hinge mounting holes on the hinge seat to facilitate the installation of the hinge device.

In the above solution, the horizontal and vertical vertical plate joints are protruded below the traction beam, the horizontal vertical plate joints are connected with the connecting floor of the hinged support structure, and the vertical vertical plate joints and the hinged support structure are supported. The plates are connected and the length of the riser joints is at least 30 mm to avoid welds in important force-transmitting parts from appearing in the position of sudden change in stiffness. The intermediate floor of the hinged support structure and the connecting floor are arranged in a non-integral structure, thereby providing a welding space for connecting the floor and the supporting cover plate, and after the welding construction, the group welding is completed.

The hinge seat and the bolster of the invention are connected to the bogie; the upper part of the hinge seat is connected with the traction beam, and the hinge support structure is arranged below the traction beam and behind the hinge seat to resist the running of the vehicle. The impact of a large longitudinal force; the bolster is between the side beam and the traction beam, used to connect with the air spring, and transmits the external force on the hinged seat to the side beam; the traction beam, the hinged support structure, the side beam and the rear The partition walls are connected to form a "mesh" type frame structure, and the overall bearing performance is good, which lays a good foundation for the body strength to meet the EN12663 standard to resist the compression force of 1500kN.

The upper surface of the passenger compartment passage area is slightly lower than the upper surface of the vehicle end connection area, and the lower surface of the traction beam is connected to the intermediate floor, the upper surface is connected to the floor on both sides, and the concave cross-sectional structure is designed in the cross-sectional direction of the vehicle body, It provides an intermediate passage in the car and a plane for installing equipment such as seats, and meets the working space requirements of the under-carriage, making full use of limited space and maintaining strength.

The profile of the bolster beam, the traction beam, the side beam and the partition wall is a large-section hollow structure, wherein a redundant cavity is arranged under the side beam and the traction beam profile, and the cavity is partially milled out in the working area of the bogie working space. Body, while the rest of the profile still has sufficient strength and functional integrity; the rib beam profile intermediate rib span is large enough to be used to mount the plug structure on the air spring; the partition profile is provided with a boss structure for transitional articulation The longitudinal impact force of the support structure provides the connection space of the brake pipe and the cable.

The end structure of the aluminum alloy car body underframe can meet the installation requirements of the 4-point suspension articulated bogie. The maximum advantage of using the hinge structure is to reduce the use of the bogie, and at the same time reduce the weight of the whole vehicle and the running resistance of the train, and significant Improve the curve passing performance of the train.

The vehicle body has good strength performance, meets the requirements of the longitudinal compression force of the hinged seat area to withstand 1500 kN, and provides a lower height intermediate passage, which provides greater convenience for passengers, and is particularly suitable for passenger vehicles with lower floor areas in some areas.

In addition, the end structure of the chassis of the present invention has a high degree of modularity and good processability, and is suitable for mass production.

DRAWINGS

Figure 1 is a block diagram showing the components of the end structure of the chassis of the present invention.

Figure 2 is a perspective view of the end structure of the chassis of the present invention.

Figure 3: Drawing of the profile of the tow beam.

Figure 4: Schematic diagram of the end of the chassis with the bogie.

Figure 5: Front view of the chassis end structure with bogie.

Figure 6: A-A view of Figure 5.

Figure 7: B-B view of Figure 5.

Figure 8: C-C view of Figure 5.

In the figure: hinged seat (1), hinge mounting hole (11), traction beam (2), first traction beam cavity (21), L-shaped missing (21a), second traction beam cavity (22), U-shaped missing (22a), vertical plate connector (23), bolster beam (3), air spring mounting hole (31), hinged support structure (4), intermediate floor (41), connecting floor (42), supporting Plate (43), support cover (44), side beam (5), side beam lower cavity (51), side beam cavity notch (51a), partition wall (6), cavity boss (61), Transition rib (7), side floor (8), articulated bogie (9), air spring (91), hinge (92).

detailed description

As shown in FIG. 1 and FIG. 2, an embodiment of the end structure of the vehicle body chassis of the present invention is composed of a hinge seat 1, two traction beams 2, two bolster beams 3, two side beams 5 and a partition wall 6 The overall frame structure of the "eye" type, these components are large-section hollow aluminum profiles, providing a basis for bearing the vehicle's own weight and transmitting longitudinal forces. The front end of the integral frame structure is provided as a vehicle end connection area A', and the rear end is provided as a passenger compartment passage area B'. The bottoms of the two bolster beams 3 and the two traction beams 2 are provided with hinged support structures 4, and the front and rear of the hinged support structure 4 are respectively connected with the hinged seat 1 and the partition wall 6, and are hinged on the upper and lower surfaces of the hinged support structure 4. The upper and lower surfaces of the seat 1 and the partition wall 6 are smoothly transitioned to avoid excessive stress concentration. The hinged support structure 4 is formed by an intermediate floor 41 located in the middle of the upper surface, a connecting floor on both sides of the upper surface, a supporting vertical plate located under the intermediate floor and the connecting floor, and a supporting cover 44 on the lower surface. Supporting the hinged seat 1. Above the overall frame structure of the "mesh" shape, a side floor 8 is provided between the traction beam 2 and the side beam 5 for supporting the load inside the vehicle, and the connection portion at a high and low variation, such as the side beam 5 and the partition wall The joint of the 6 and the joint of the traction beam 2 and the bolster 3 are provided with transition ribs 7, so that the structural rigidity of the end of the pedestal is more coordinated.

The plane of the hinged seat 1 and its hinge mounting hole 11, the plane of the bolster 3 and its air spring mounting hole 31 are integrally processed after the "mesh" frame structure and the side wall 8 are assembled, reducing the welding deformation The perpendicularity of the plane of the hinged seat 1 to the ground, and the adverse effect of the parallelism of the plane of the bolster 3 and the side floor 8.

Figure 3 is a drawing of a profile of a tow beam. The traction beam 2 is a large-section hollow structure, and redundant cavities are arranged in the lower cavity of the profile, that is, the first traction beam cavity 21 and the second traction beam cavity 22, and the cross-sectional direction is also processed into an L-shaped shape. The L-shaped portion 21a and the U-shaped portion 22a having a U-shaped cross-section are provided; and a vertical plate joint 23 is provided on one side of the first traction beam cavity 21 for connecting the hinged support structure 4.

Figure 4 is a schematic view showing the structure of the end of the chassis with the bogie. The hinge seat 1 and the bolster 3 located at the connection region of the vehicle body are respectively connected to the hinge device 92 of the bogie 9 and the air spring 91; the bolster 3 is located between the side sill 5 and the traction beam 2, and mainly carries the vertical load of the vehicle. The nonlinear elastic characteristics of the air spring 91 are utilized to enhance the comfort of the passenger while transmitting the longitudinal force on the hinged seat 1 to the side sill 5. The upper surface of the passenger compartment passage area B' is slightly lower than the upper surface of the vehicle end connection area A'. The second traction beam cavity 22, which is retained by the traction beam 2 at the joint with the bolster 3, is completely milled at the junction of the rear section and the side floor 8, and the U-shaped rim 22a is machined to provide a seat for mounting. The plane of the chair and other equipment.

Figure 5 is a front elevational view of the end structure of the chassis with the bogie. The bogie 9 is fixed under the end structure of the chassis of the present invention, and the hinge device 92 is connected to the hinge mounting hole 11 fixed to the hinge seat 1 by bolts; the air spring 91 is fixed to the air spring of the bolster 3 by bolts. The mounting hole 31 is connected to it.

The L-shaped lack 21a is machined in the first traction beam cavity 21, and the side beam cavity notch 51a is machined in the middle of the side beam 5, so that the frame and the wheelset of the bogie 9 have sufficient working space during the running of the vehicle.

Figure 6 is a view taken along line A-A of Figure 5. One end of the traction beam 2 is connected to the bolster 3 and the hinged seat 1, and the other end is connected to the partition wall 6. The hinged seat 1 connects and is located below the two traction beams 2, and the upper surface of the bolster 3 is flush with the upper surface of the traction beam 2. The hinged support structure 4 is below the traction beam 2 for supporting the front hinged seat 1 against the impact of the large longitudinal forces of the articulation device 92 during vehicle operation.

The bolster beam 3 is a large-section hollow profile, the intermediate rib plate span is large enough to be used to mount the insert structure on the air spring 91; the partition wall 6 is provided with a cavity boss 61 for transitioning the longitudinal impact force of the hinged support structure 4. At the same time, its cavity can provide the connection and passage space of the brake pipe and cable.

Figure 7 is a B-B view of Figure 5. The hinge seat 1 and the bolster 3 located at the connection end region of the vehicle are used for connection with the bogie 9; the upper portion of the hinge seat 1 is connected with the traction beam 2, and below the traction beam 2, the hinge support structure 4 is provided behind the hinge seat 1 For resisting the impact of a large longitudinal force during operation of the vehicle; the bolster 3 is located between the side sill 5 and the traction beam 2 for engaging the air spring 91 and transmitting the external force on the hinged seat 1 to the side sill 5 The traction beam 2, the hinged support structure 4, and the side beam 5 are all connected with the partition wall 6 at the rear to form a "mesh"-shaped frame structure, and the side beam 5 and the traction beam 2 are vertically symmetrically arranged, and the force is uniform, and the overall bearing performance is obtained. Good, laid a good foundation for the body strength to meet the EN12663 standard to resist compression force 1500kN.

The upper surface of the bolster 3 located at the connection end region of the vehicle is flush with the side sill 5 and the traction beam 2. Based on the strength, at the joint, the upper surface of the lower cavity 51 of the side sill of the side sill 5 and the lower surface of the bolster 3 The upper surface of the second traction beam cavity 22 of the alignment beam 2 is aligned with the upper surface of the bolster 3, and a transition rib 7 is provided at a portion where the height difference between the traction beam 2 and the bolster 3 is large, thereby ensuring the whole of the area. Strength and stiffness coordination.

In the passenger compartment area, the second traction beam cavity 22 of the traction beam 2 is machined such that its upper surface is slightly lower than the vehicle end connection area. The side floor 8 between the traction beam 2 and the side beam 5 adopts a plate beam structure, and the height is controlled within 30 mm, ensuring sufficient running safety clearance for the distance h2 of the lower surface of the side floor 8 from the upper surface of the frame; and the side beam 5 The side beam lower cavity 51 is machined with the side beam cavity notch 51a, and the first traction beam cavity 21 of the traction beam 2 is machined with the L-shaped defect 21a to ensure the distance of the lower surface from the upper surface of the frame within the range of motion of the bogie 9. H1 has enough safety clearance. At the same time, the profile of the side beam 5 and the traction beam 2 is large, and the basic strength of the vehicle body is not affected after the redundant cavity is processed.

In the middle of the passenger compartment passage area, below the traction beam 2 is provided an articulated support structure 4 which is concave in the cross section of the vehicle body. The hinged support structure 4 is welded to the front hinged seat 1 and the lower portion of the hinged support structure 4 is lower than at least one row of hinge mounting holes 11 to prevent the hinged seat 1 from being subjected to excessive bending moments by longitudinal forces.

By designing a concave structure in the cross-sectional direction, the intermediate passage in the vehicle is provided, and the working space requirement of the under-carriage is satisfied, and the limited space is utilized and the strength is maintained.

Figure 8 is a C-C view of Figure 5. In the passenger compartment area, the upper surface of the traction beam 2 is flush with the side floor 8, and the horizontal and vertical riser joints 23 extending below the traction beam 2 are respectively connected to the connection floor 42 and the support vertical plate 43 of the hinge support structure 4. The vertical plate connecting head 23 is at least 30 mm away from the closed cavity of the traction beam 2, so that the weld seam of the important force transmitting portion is prevented from appearing in the sudden change position of the rigidity. The intermediate floor 41 is connected to two connecting floors 42. The intermediate floor 41 is not integrally formed with the connecting floor 42. Mainly, the welding space for connecting the floor 42 and the supporting cover 44 is provided, and after the welding is completed, the welding is completed.

The partition wall 6 is a hollow profile structure with an oversized section, and a cavity boss 61 is provided at a joint portion of the hinge support structure 4 to increase local strength, and a transition rib 7 is provided at a portion where the height difference is high from the side beam 5, thereby ensuring the Regional stiffness coordination.

Claims

An end structure of an articulated EMU car body underframe includes two parallel longitudinally disposed side beams (5), and a traction beam (2) parallel to the side beams is disposed between the two side beams, and is located at a vehicle end connection region The bolster beam (3) is laterally disposed between the two sides of the traction beam and the side beam, and the two side beams and the traction beam are vertically connected to the partition wall (6) at one end of the passenger passage region, wherein the traction beam is Two, and two traction beams are longitudinally symmetrically arranged, the bolsters are two, and the two bolsters are respectively arranged outside the two traction beams, so that the overall structure of the vehicle body chassis forms a "mesh" frame structure; two The bottoms of the bolsters are respectively connected to the air springs (91) of the bogie (9); the two traction beams are located at the bottom of one end of the vehicle end connection region and are provided with hinged joints for connecting with the hinge device (92) of the bogie (9). (1); the lower surfaces of the two traction beams and the two bolsters are fixedly connected to the hinge support structure (4), and one end of the hinge support structure is connected to the rear of the hinge seat, and the other end is connected to the partition wall; the upper part of the hinge support structure is directly disposed Intermediate floor (41), upper part of two traction beams and side beams on the corresponding side Are provided between the sides of the floor (8), that the cross-sectional direction of the vehicle body chassis structure is formed concave shape.
The armature chassis end structure of an articulated EMU according to claim 1, wherein the hinge seat (1), the traction beam (2), the bolster (3), and the side beam (5) And the partition wall (6) is made of hollow aluminum profiles.
The articulated EMU body undercarriage end structure according to claim 2, wherein the inside of the profile of the traction beam is provided with a second traction beam cavity (22) and a first traction from top to bottom. a beam cavity (21), a U-shaped defect (22a) having a U-shaped cross section in a top portion of the first traction beam cavity (21) located in the passenger passage region, the side floor being located behind the bolster, and It is flush with the lower surface of the second traction beam cavity (22), so that the upper surface of the traction beam, the upper surface of the bolster and the upper surface of the side beam are flush, and the upper surface of the passenger passage area is connected to the vehicle end. The upper surface of the area is low.
The armature chassis end structure of the articulated EMU according to claim 3, wherein the bottom of the first traction beam cavity is provided with a vertical plate connector (23) connected to the hinge support structure. .
The end structure of an articulated EMU body chassis according to claim 3, wherein the first traction beam cavity (21) is provided with an L-shaped defect (21a) having an L-shaped cross section. .
The articulated support structure of an articulated EMU base body according to claim 1, wherein the hinge support structure is provided by the intermediate floor (41) located at the middle of the upper surface on both sides of the upper surface. The connecting floor (42), the supporting vertical plate (43) located under the intermediate floor and the connecting floor, and the supporting cover plate (44) located on the lower surface are welded together.
The articulated structure of an articulated EMU body according to claim 1, characterized in that the connecting plane of the hinged seat and the hinge mounting hole (11) thereon, the mounting of the bolster The plane and the air spring mounting hole (31) on the plane and the frame structure of the "mesh" shape and the side layer are finished after being welded.
The end structure of the articulated EMU body frame according to claim 3, wherein the side beam of the end frame of the end frame of the articulated EMU base body is machined with a side beam cavity gap (51a) ).
The end structure of an articulated EMU body chassis according to claim 1, wherein a cavity boss (61) is disposed between the partition wall and the hinge support structure.
The armature chassis end structure of an articulated EMU according to claim 1, wherein the side beam and the partition wall joint under the frame structure and the transition between the traction beam and the bolster beam are provided. Tendons.