CN-121973821-A - Underframe and rail vehicle

CN121973821ACN 121973821 ACN121973821 ACN 121973821ACN-121973821-A

Abstract

The embodiment of the application provides an underframe and a railway vehicle, wherein the underframe comprises a first end beam, a second end beam, a first traction sleeper buffer, a second traction sleeper buffer and side beams, the side beams are connected between the first end beam and the second end beam, the first traction sleeper buffer is connected with the first end beam, the second traction sleeper buffer is connected with the second end beam, the first traction sleeper buffer comprises a first sleeper beam which extends transversely and is arranged between the side beams on two sides, the first traction sleeper beam extends longitudinally and is connected between the first sleeper beam and the first end beam, a buffer longitudinal beam which extends longitudinally and is arranged at the top of the first traction sleeper, the head part of the buffer longitudinal beam extends to the middle part of the first traction sleeper beam, a coupler panel extends transversely, the first end sleeper panel comprises two sections of beams which are arranged transversely, and the tail part of the buffer longitudinal beam extends to be connected with the coupler panel. The underframe and the railway vehicle provided by the embodiment of the application have better dynamic performance, and can meet the requirements of high-speed railway vehicles.

Inventors

LIU JIN
WANG ZHIWEI
SHI LEI
GUO JINCHENG
QU ZHENYANG
WANG CHENG
FU YINA
HE DONGYU
HAO YANCHAO
WANG HE

Assignees

中车唐山机车车辆有限公司

Dates

Publication Date: 20260505
Application Date: 20260325

Claims (15)

1. The underframe is characterized by comprising a first end beam, a second end beam, a first traction pillow cushion and a second traction pillow cushion, wherein the side beam is connected between the first end beam and the second end beam; The first traction pillow cushion comprises: the first sleeper beam extends transversely and is arranged between the side beams at two sides; the first traction beam extends longitudinally and is connected between the first sleeper beam and the first end beam; The buffer longitudinal beam extends longitudinally and is arranged at the top of the first traction beam, and the head of the buffer longitudinal beam extends to the middle of the first traction beam; The car coupler comprises a car coupler panel extending along the transverse direction, a first end beam comprising two sections of beams arranged along the transverse direction, the car coupler panel being arranged between the two sections of beams in the first end beam, and the tail part of the buffer longitudinal beam extending to be connected with the car coupler panel.
2. The underframe according to claim 1, characterized in that the first traction beam comprises an upper cover plate, a lower cover plate and a vertical plate connected between the upper cover plate and the lower cover plate, and the inner cavity of the first traction beam is divided into a plurality of cavities which are sequentially arranged along the vertical direction by a rib plate; The buffer longitudinal beam comprises an upper cover plate, a lower cover plate and a vertical plate connected between the upper cover plate and the lower cover plate, and the vertical plate of the buffer longitudinal beam is vertically aligned with the vertical plate of the first traction beam.
3. The undercarriage of claim 1 wherein the width of the first draft sill upper cover is greater than the distance between the risers on both sides of the first draft sill, the first draft sill upper cover being adapted to be coupled to the floor, the portion of the first draft sill upper cover beyond the risers acting as a flange to enhance the strength of the coupling to the floor.
4. The chassis of claim 2, wherein the coupler panel comprises: the coupler main plate extends transversely and is connected between two sections of beams of the first end beam; The car coupler vertical plate extends vertically and is arranged on the surface of the car coupler main plate facing the first traction beam, and the end parts of the first traction beam and the buffer longitudinal beam are correspondingly connected with the car coupler vertical plate in an aligned mode.
5. The undercarriage of claim 4 wherein the riser of the first draft sill comprises a large cross-sectional section and a small cross-sectional section, the small cross-sectional section having a cross-sectional area less than the cross-sectional area of the large cross-sectional section, the top surface of the large cross-sectional section being flush with the top surface of the small cross-sectional section, the bottom surface of the large cross-sectional section being lower than the bottom surface of the small cross-sectional section and transitioning through a curve.
6. The undercarriage of claim 5 wherein the bottom end of the coupler riser is arcuate and tangential to the bottom surface of the large cross section of the first draft sill riser.
7. The chassis of claim 1, wherein the second traction bolster includes: the second sleeper beams extend transversely and are arranged between the side beams at two sides; The second traction beam extends longitudinally and is connected between the second sleeper beam and the second end beam, the second traction beam comprises front end connecting portions, rear end connecting portions and connecting portions, the number of the front end connecting portions is two, the two front end connecting portions are arranged side by side and are connected to one end of the connecting portions, the number of the rear end connecting portions is two and are connected to the other end of the connecting portions, the front end connecting portions are connected with the second sleeper beam, and the rear end connecting portions are connected with the second end beam.
8. The undercarriage of claim 7 wherein the two rear end connections are at an acute angle therebetween, and wherein the distance between the two rear end connections increases progressively in a direction from the second bolster toward the second end bolster.
9. The undercarriage of claim 8 wherein each of the rear end connection portions comprises an upper cover plate and two upright plates connected to both sides of the upper cover plate, wherein bottom ends of the two rear end connection portions share a lower cover plate connected to bottom ends of the respective upright plates of the two rear end connection portions, and wherein the height of the lower cover plate gradually decreases and the height of the upright plate of each rear end connection portion gradually increases in a direction from the second bolster toward the second end bolster.
10. The underframe according to claim 7, characterized in that a lower end beam is arranged below the second end beam, an equipment cabin is enclosed between the lower end beam and the floor, two sides of the lower end beam are arc-shaped, two sides of the second end beam are provided with lower bent beams, the curvature change rule of the lower bent beams is the same as that of the lower end beam, the top end of each lower bent beam is connected to the second end beam, and the bottom end of each lower bent beam extends to the bottom end of each lower end beam.
11. The undercarriage of claim 7 further comprising an equipment joist positioned within the equipment compartment, the equipment joist comprising a joist and a connecting beam, the number of connecting beams being two, the connecting beams being connected to opposite ends of the joist, the joist extending along the cross beam, the two connecting beams being connected to the side beams on opposite sides, respectively.
12. The chassis of claim 11, wherein the upper surface of the side rail is perforated to form a receiving groove; The connecting beam is inserted into the accommodating groove downwards and is connected with the mounting plate through the fastening piece.
13. The underframe of claim 1, further comprising an anti-side-rolling torsion bar mounting seat which is arranged on one side surface of the sleeper beam and is respectively connected with the sleeper beam, the side beams and the floor, wherein the anti-side-rolling torsion bar mounting seat comprises two seat bodies, mounting surfaces of the two seat bodies are provided with mounting sinking tables, connecting holes are formed in the mounting sinking tables, the width of the mounting sinking tables is smaller than that of the seat bodies, and a distance for passing through the mounting ends of the anti-side-rolling torsion bars is reserved between the mounting sinking tables in the two seat bodies.
14. The chassis of claim 1, further comprising an anti-hunting damper mount disposed on the other side of the bolster, the anti-hunting damper mount including a compensating beam and a C-mount, the compensating beam being located inside the side rail, the C-mount having an opening facing the side rail and the compensating beam and an open end connected to the side rail and the compensating beam, respectively, the C-mount having a plurality of connection holes for connection to the anti-hunting damper.
15. A rail vehicle comprising a chassis according to claim 1 to 14.

Description

Underframe and rail vehicle Technical Field The application relates to the technology of railway vehicles, in particular to an underframe and a railway vehicle. Background The undercarriage is an important component of the body of a railway vehicle, on the one hand for supporting the weight of the body superstructure and transmitting the body weight to the bogie while bearing vertical, longitudinal and transverse dynamic loads from the rails. On the other hand, the underframe also provides a mounting foundation for equipment such as a bogie, a coupler buffer device, a braking system and the like. The underframe is formed by welding parts such as an underframe boundary beam, a traction pillow buffer, a two-position traction pillow buffer, a one-position end beam, a two-position end beam, a middle floor and the like, and aluminum alloy sections and plates are selected as materials, so that differential design is carried out according to different vehicle body bearing requirements. Fig. 1 shows an existing underframe structure, an underframe boundary beam 2 is connected between a first-position end beam 5 and a second-position end beam 6, a first-position traction pillow buffer 1 and a second-position traction pillow buffer 4 are respectively connected with the first-position end beam 5 and the second-position end beam 6, and a middle floor 3 is positioned above each component and connected with the corresponding component. The equipment of each vehicle is connected to the corresponding position of the underframe through the bracket and the connecting code respectively. The traditional underframe has the defects of more parts connected on the structure, very complex interfaces, low integration level, larger weight and larger obstruction to the improvement of traction efficiency, too many connecting points can influence the installation reliability, and the difficulty of maintenance and overhaul is larger. In addition, along with the continuous improvement of the running speed of the railway vehicle, the current speed reaches 400Km/h, and the traditional traction and sleeper buffer structure can not meet the requirement of the dynamic performance of the underframe in a high-speed running state. Especially when passing through a curve, the traditional underframe can not meet the requirement of high-speed passing completely, and new design schemes are urgently required to be provided. Disclosure of Invention In order to solve one of the above technical drawbacks, an embodiment of the present application provides an underframe and a rail vehicle. According to a first aspect of the embodiment of the application, the underframe comprises a first end beam, a second end beam, a first traction pillow cushion, a second traction pillow cushion and an edge beam, wherein the edge beam is connected between the first end beam and the second end beam; The first traction pillow cushion comprises: the first sleeper beam extends transversely and is arranged between the side beams at two sides; the first traction beam extends longitudinally and is connected between the first sleeper beam and the first end beam; The buffer longitudinal beam extends longitudinally and is arranged at the top of the first traction beam, and the head of the buffer longitudinal beam extends to the middle of the first traction beam; The car coupler comprises a car coupler panel extending along the transverse direction, a first end beam comprising two sections of beams arranged along the transverse direction, the car coupler panel being arranged between the two sections of beams in the first end beam, and the tail part of the buffer longitudinal beam extending to be connected with the car coupler panel. According to a second aspect of an embodiment of the present application there is provided a railway vehicle comprising an undercarriage as described above. The technical scheme includes that the underframe comprises a first end beam, a second end beam, a first traction sleeper buffer and a second traction sleeper buffer, wherein the side beams are connected between the first end beam and the second end beam, the first traction sleeper buffer is connected with the first end beam, the second traction sleeper buffer is connected with the second end beam, the first traction sleeper buffer comprises a first sleeper beam which extends transversely and is arranged between the side beams on two sides, the first traction sleeper beam extends longitudinally and is connected between the first sleeper beam and the first end beam, a buffer longitudinal beam which extends longitudinally and is arranged at the top of the first traction beam, the head of the buffer longitudinal beam extends to the middle of the first traction beam, a coupler panel which extends transversely, the first end beam comprises two sections of beams which are arranged transversely, the coupler panel is arranged between the two sections of the first end beams, and the tail of the buffer longitud