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CN-116811949-B - Rail vehicle's chassis and rail vehicle's tip frame

CN116811949BCN 116811949 BCN116811949 BCN 116811949BCN-116811949-B

Abstract

The invention discloses an underframe of a railway vehicle and an end frame of the railway vehicle, wherein the end frame comprises a car coupler seat, a traction beam group, a buffer beam and two side beams, wherein the traction beam group is arranged on the car coupler seat and comprises a first traction beam, a second traction beam and two third traction beams, the first traction beam and the second traction beam are respectively positioned on two longitudinal sides of the car coupler seat, the two third traction beams are respectively positioned on two transverse sides of the car coupler seat, one end of the first traction beam, which is far away from the car coupler seat in the longitudinal direction, is connected with the buffer beam, the two side beams are arranged at intervals in the transverse direction, the transverse ends of the buffer beam are respectively connected with the two side beams, one end of the third traction beam, which is far away from the car coupler seat in the transverse direction, is connected with the corresponding side beams, and one end of the second traction beam, which is far away from the car coupler seat in the longitudinal direction, is connected with the side beams.

Inventors

  • TIAN HONGLEI
  • YU YANGYANG
  • SUN XIANGUANG
  • CAI JUNSHUANG
  • HU YINGCAN

Assignees

  • 中车青岛四方机车车辆股份有限公司

Dates

Publication Date
20260508
Application Date
20230630

Claims (12)

  1. 1. An end frame for a rail vehicle, comprising: a coupler seat (1); The traction beam group (2) is arranged on the car coupler seat (1) and comprises a first traction beam (21), a second traction beam (22) and two third traction beams (23), wherein the first traction beam (21) and the second traction beam (22) are respectively positioned on two longitudinal sides of the car coupler seat (1), and the two third traction beams (23) are respectively positioned on two transverse sides of the car coupler seat (1); A buffer beam (3), wherein one end of the first traction beam (21) far away from the coupler seat (1) in the longitudinal direction is connected with the buffer beam (3); The two side beams (4) are arranged at intervals in the transverse direction, the two transverse ends of the buffer beam (3) are respectively connected with the two side beams (4), and one end, far away from the coupler seat (1), of the third traction beam (23) in the transverse direction is connected with the corresponding side beam (4); The two transverse ends of the sleeper beam (5) are respectively connected with the two side beams (4), and one end, far away from the coupler seat (1), of the second traction beam (22) in the longitudinal direction is connected with the sleeper beam (5); The third traction beam (23) comprises a first beam section (231) and a second beam section (232) which are arranged at an included angle, the first beam section (231) is connected with the car coupler seat (1), the second beam section (232) is connected with the side beam (4), the first beam section (231) is obliquely arranged towards the sleeper beam (5) along the direction far away from the car coupler seat (1) in the transverse direction, and the included angle between the extending direction of the first beam section (231) and the longitudinal direction is smaller than the included angle between the extending direction of the second beam section (232) and the longitudinal direction.
  2. 2. The end frame of a rail vehicle according to claim 1, characterized in that the coupler housing (1) comprises a first top plate (11), a first bottom plate (12) and a first plate body (13) and a second plate body (14) which are arranged at intervals in the longitudinal direction, wherein the first plate body (13) and the second plate body (14) are connected with the first top plate (11), the first plate body (13) and the second plate body (14) are connected with the first bottom plate (12), and the first plate body (13) and the second plate body (14) are provided with mounting holes.
  3. 3. End frame of a rail vehicle according to claim 2, characterized in that the coupler housing (1) further comprises a reinforcing structure (15), the reinforcing structure (15) connecting the first plate body (13) and the second plate body (14), and the reinforcing structure (15) connecting the first top plate (11) and the first bottom plate (12).
  4. 4. An end frame of a rail vehicle according to claim 3, characterized in that the reinforcing structure (15) has a triangular cavity.
  5. 5. An end frame of a rail vehicle according to claim 3, characterized in that the reinforcing structure (15) is provided with a connecting rib, which is connected to the set of draft sill (2).
  6. 6. An end frame of a railway vehicle according to any one of claims 1-5, characterized in that the sleeper beam (5) comprises a plurality of sub beams (5 a), each sub beam (5 a) being arranged and connected in sequence in the transverse direction.
  7. 7. The end frame of a rail vehicle according to any of the claims 1-5, characterized in that the sleeper beam (5) comprises a second top plate (51), a second bottom plate (52) and a reinforcement plate (53), the reinforcement plate (53) connecting the second top plate (51) and the second bottom plate (52).
  8. 8. An end frame of a rail vehicle according to any one of claims 1-5, characterized in that it further comprises a connecting beam (6) and a cross beam (8), said cross beam (8) being located on the side of said bolster (5) facing away from said bumper beam (3), said cross beam (8) connecting two of said side beams (4), said connecting beam (6) connecting said bolster (5) and said cross beam (8).
  9. 9. The end frame of a rail vehicle according to any of the claims 1-5, characterized in that the second traction beam (22) comprises a first beam body (221), a second beam body (222) and a third beam body (223), the first beam body (221) and the second beam body (222) being arranged laterally opposite each other, the third beam body (223) connecting the first beam body (221) and the second beam body (222); at least a partial height of the second traction beam (22) in a direction approaching the bolster (5) is presented as a tapered arrangement.
  10. 10. The end frame of a rail vehicle of claim 9, characterized in that the first beam body (221) and the second beam body (222) are both i-beams and the third beam body (223) is a plate beam.
  11. 11. An end frame of a rail vehicle according to any of the claims 1-5, characterized in that the extension direction and the longitudinal direction of the first beam section (231) are at an angle of 55-70 degrees and the extension direction and the longitudinal direction of the second beam section (232) are at an angle of 75-90 degrees.
  12. 12. A undercarriage for a rail vehicle comprising the rail vehicle end frame of any one of claims 1-11.

Description

Rail vehicle's chassis and rail vehicle's tip frame Technical Field The invention relates to the technical field of railway vehicles, in particular to a bottom frame of a railway vehicle and an end frame of the railway vehicle. Background With the development of society and the advancement of technology, the demand for lightweight design of rail vehicles is increasingly prominent, and the demand has become a technical topic of great concern to those skilled in the art. The car body is a main bearing structure of the railway car and is one of the components with the largest mass ratio, so that the improvement of the lightweight performance of the car body is urgent. The car body comprises a chassis, the chassis comprises an end frame, the end frame is a core force transmission component for loads such as car coupler compression, vertical load, bogie impact and the like, and in general, in order to ensure the structural rigidity of the end frame, the method of increasing the structural section, increasing the wall thickness of a section bar and the like is needed, but the method is obviously unfavorable for the light weight of the structure. Therefore, how to provide a solution to facilitate the light-weight design of the end frame is still a technical problem to be solved by those skilled in the art. Disclosure of Invention The invention aims to provide a bottom frame of a railway vehicle and an end frame of the railway vehicle, wherein the load transmission path of the end frame is improved, the end frame can have high structural rigidity, and the cross section size, the wall thickness and the like of a beam body can be properly reduced so as to achieve light weight. The end frame of the railway vehicle comprises a car coupler seat, a traction beam group, a buffer beam, two side beams and a sleeper beam, wherein the traction beam group is arranged on the car coupler seat and comprises a first traction beam, a second traction beam and two third traction beams, the first traction beam and the second traction beam are respectively positioned on two longitudinal sides of the car coupler seat, the two third traction beams are respectively positioned on two transverse sides of the car coupler seat, one end, far away from the car coupler seat, of the first traction beam in the longitudinal direction is connected with the buffer beam, the two side beams are arranged at intervals in the transverse direction, the transverse ends of the buffer beam are respectively connected with the two side beams, one end, far away from the car coupler seat in the transverse direction, of the third traction beam is connected with the corresponding side beams, the transverse ends of the sleeper beam are respectively connected with the two side beams, and one end, far away from the car coupler seat in the longitudinal direction, of the second traction beam is connected with the sleeper beam. By adopting the scheme, the draft sill group is in a tree-shaped structure layout, the coupler seat, the buffer beams, the two side beams and the sleeper beams can be effectively connected into a whole closed frame, and the whole closed frame also comprises a plurality of partial closed frames, so that the end frame can form a plurality of whole and partial closed frames, the structural rigidity of the end frame can be greatly improved, the transmission path of the load born by the coupler seat can be optimized, the rigidity contribution of the beams such as the draft sill group, the buffer beams, the side beams and the sleeper beams can be fully exerted, and the whole effect of the frames can be greatly improved, so that the possibility of deformation such as bending and the like of the coupler seat when the coupler seat is loaded can be reduced. Compared with the prior art, the end frame provided by the invention improves the structural rigidity of the end frame by improving the load transmission path, so that the structural section size, the section wall thickness and the like of each beam body in the end frame can be properly reduced, the foundation is provided for the lightweight design of the railway vehicle, and the contradiction between the structural rigidity and the lightweight product can be overcome to a certain extent. Optionally, the coupling seat includes first roof, first bottom plate and first plate body and the second plate body that vertically go up the interval setting, first plate body with the second plate body all with first roof links to each other, first plate body with the second plate body all with first bottom plate links to each other, first plate body with the second plate body all is provided with the mounting hole. Optionally, the coupler seat further includes a reinforcing structure, the reinforcing structure connects the first plate and the second plate, and the reinforcing structure connects the first top plate and the first bottom plate. Optionally, the reinforcing structure has triangular cavities. Optionally,