CN109131407B

CN109131407B - Concave underframe and multi-type combined transport vehicle

Info

Publication number: CN109131407B
Application number: CN201811052236.4A
Authority: CN
Inventors: 陈伟; 刘凤伟; 苏利杰; 李晓军; 刘翀原; 任丽娟; 黄春雨
Original assignee: CRRC Yangtze Co Ltd
Current assignee: CRRC Yangtze Co Ltd
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2020-04-03
Anticipated expiration: 2038-09-10
Also published as: CN109131407A

Abstract

The invention discloses a concave underframe and a multi-type combined transport vehicle, wherein the concave underframe comprises a middle underframe and end underframe arranged at two ends of the middle underframe, the middle underframe comprises two side beams which are arranged in parallel, a plurality of cross beams which are arranged at intervals along the length direction of the side beams are arranged between the two side beams, and two ends of each cross beam are respectively hinged with a hinge seat arranged on the side beams at the same side. The cross beam and the side beam are connected in a hinged mode, a proper amount of vertical freedom degree and horizontal rotation freedom degree can be formed between the cross beam and the side beam to adapt to displacement generated in the process of impact and vibration of a vehicle, the bottom frame can slightly rotate along a hinged point after being stressed, distortion and internal stress generated after the traditional welding structure is adopted and deformed after being stressed are eliminated, and fatigue damage of the connection position is avoided.

Description

Concave underframe and multi-type combined transport vehicle

Technical Field

The invention relates to a multi-type combined transport vehicle, in particular to a concave underframe and a multi-type combined transport vehicle.

Background

The multi-type combined transport vehicle can meet the working conditions of carrying road semi-trailers and carrying containers of various specifications such as 20ft to 53ft, and is limited by the load and the limit of the vehicle, the vehicle can adopt a drop-hole type concave underframe structure, the lower layer of the concave bottom can be used for loading 1 container of 40 feet or 2 containers of 20 feet, and the upper layer can be used for loading 1 container of more than or equal to 40 feet. As shown in fig. 1, a conventional depressed center cross member of a railway vehicle is an assembly-welded structure of upper and lower cover plates, and a cross member 4 and a side member 3 are connected by welding, and since the cross member 4 and the side member 3 are rigidly connected, there is no relative movement and rotational freedom therebetween.

Along with the needs of economic development of railway transportation, the carrying capacity of the multi-type combined transport vehicle is further improved, the load borne by the concave underframe is increased, and the existing railway vehicle is easily subjected to fatigue cracks at the connecting part of the bottom cross beam and the side beam under the influence of the weight of the borne goods, impact and shaking generated during loading and unloading of the goods and vehicle vibration in the transportation process, so that the stability of the structure is damaged, the carrying capacity borne by the existing railway vehicle is limited, and the requirements of multi-type combined transport cannot be met.

Therefore, a concave underframe and a multi-type intermodal vehicle with high bearing capacity and strong fatigue failure resistance are needed to meet the requirement of vigorously developing multi-type intermodal equipment transportation at home and abroad.

Disclosure of Invention

The invention aims to provide a concave underframe and a multi-type combined transport vehicle, wherein a cross beam and a side beam of the concave underframe are connected in a hinged mode, and a proper amount of vertical freedom degree and horizontal rotation freedom degree can be provided between the cross beam and the side beam so as to adapt to displacement generated in the processes of impact and vibration of vehicles and avoid fatigue damage at the connection part.

In order to achieve the purpose, the invention designs a concave underframe, which comprises a middle underframe and end underframe arranged at two ends of the middle underframe, and is characterized in that: the middle chassis comprises two side beams which are arranged in parallel, a plurality of cross beams which are arranged at intervals along the length direction of the side beams are arranged between the two side beams, and two ends of each cross beam are hinged with the hinge seats arranged on the side beams on the same side respectively.

Further, the curb girder includes diaphragm, riser and arc, the bottom of diaphragm is provided with the U-shaped plate rather than fixed connection, the bottom and the perpendicular fixed connection of diaphragm of riser, the top of riser and the lower border fixed connection of arc.

Further, the both ends of crossbeam are provided with and are used for articulating the articulated connector of seat.

Furthermore, a plug welding hole used for being welded with the end part of the cross beam is formed in the connecting head.

Furthermore, the hinge base comprises an upper connecting plate and a lower connecting plate, the upper connecting plate is fixedly connected with the top end face of the transverse plate, and the lower connecting plate is fixedly connected with the bottom end face of the U-shaped plate;

the connecting structure is characterized in that mounting holes are formed in the upper connecting plate and the lower connecting plate, pin shafts hinged with the connectors are arranged in the mounting holes, and the upper end and the lower end of each pin shaft are welded with the upper connecting plate and the lower connecting plate respectively.

Still further, the upper connecting plate and the lower connecting plate are triangular rigid members made of metal materials.

Furthermore, the cross beam is a hollow tubular component made of a metal material, and the connecting head is a solid tubular component made of a metal material.

The invention also provides a multi-type combined transport vehicle which comprises the concave underframe, wherein the two longitudinal sides of the middle underframe of the concave underframe are provided with side walls, the end parts of the two sides of the concave underframe are provided with end walls, and a cavity for containing materials is enclosed by the middle underframe, the side walls and the end walls.

Compared with the prior art, the invention has the advantages that:

the transverse beam and the side beam are connected in a hinged mode, a proper amount of vertical freedom degree and horizontal rotation freedom degree can be formed between the transverse beam and the side beam to adapt to displacement generated in the process of impact and vibration of a vehicle, the bottom frame can slightly rotate along a hinged point after being stressed, distortion and internal stress generated after the traditional welding structure is adopted and deformed after being stressed are eliminated, fatigue damage of a connection part is avoided, and the requirements of the multi-type intermodal vehicle for increasing the bearing capacity and the fatigue damage resistance are met.

Secondly, the hinge seat comprises an upper connecting plate and a lower connecting plate, the upper connecting plate is fixedly connected with the top end face of the transverse plate, and the lower connecting plate is fixedly connected with the bottom end face of the U-shaped plate, so that the connection firmness of the hinge seat and the side beam is enhanced, and the phenomenon of fracture is not easy to occur.

Thirdly, the cross beam is a hollow tubular member made of metal materials, the connector is a solid tubular member made of metal materials, the dead weight of the cross beam can be reduced by adopting a hollow structure, and the firmness of the hinged point of the connector and the hinged seat can be improved by adopting the solid connector.

Drawings

FIG. 1 is a schematic top view of a conventional railway car underframe;

FIG. 2 is a schematic top view of the recessed base frame of the present invention;

FIG. 3 is a side view of the recessed chassis of FIG. 2;

FIG. 4 is an enlarged schematic structural view of the side and cross members of FIG. 2;

FIG. 5 is a schematic longitudinal cross-sectional structural view of FIG. 4;

in the figure, a middle underframe 1, an underframe 2, side beams 3 (a transverse plate 3.1, a vertical plate 3.2, an arc-shaped plate 3.3 and a U-shaped plate 3.4), a cross beam 4, a hinge seat 5, an upper connecting plate 5.1, a lower connecting plate 5.2, a mounting hole 5.3, a pin shaft 5.4, a connector 6, a plug welding hole 7, a side wall 8 and an end wall 9.

Detailed Description

The invention is described in further detail below with reference to the following figures and specific examples:

fig. 1 is a prior art concave bottom frame, and the details are described in detail in the background.

The concave underframe of the invention as shown in fig. 2 and fig. 3 comprises a middle underframe 1 and end underframe 2 arranged at two ends of the middle underframe 1, wherein the middle underframe 1 comprises two side beams 3 arranged in parallel, a plurality of cross beams 4 arranged at intervals along the length direction of the two side beams 3 are arranged between the two side beams 3, and two ends of the cross beams 4 are respectively hinged with hinge seats 5 arranged on the side beams 3 at the same side. The side beam 3 comprises a transverse plate 3.1, a vertical plate 3.2 and an arc-shaped plate 3.3, a U-shaped plate 3.4 fixedly connected with the transverse plate 3.1 is arranged at the bottom end of the transverse plate 3.1, the bottom end of the vertical plate 3.2 is vertically and fixedly connected with the transverse plate 3.1, and the top end of the vertical plate 3.2 is fixedly connected with the lower edge of the arc-shaped plate 3.3. The two ends of the beam 4 are provided with connectors 6 for hinging with the hinging seats 5. The connector 6 is provided with a plug welding hole 7 for welding with the end of the beam 4. The crossbeam 4 is the hollow tubular component that metal material made, and the connector 6 is the solid tubular component that metal material made, adopts hollow structure can alleviate the dead weight of crossbeam, and adopts solid connector can improve the fastness of connector and articulated some department of seat.

As shown in fig. 4 and 5, the hinge base 5 includes an upper connecting plate 5.1 and a lower connecting plate 5.2, the upper connecting plate 5.1 is fixedly connected to the top end surface of the horizontal plate 3.1, and the lower connecting plate 5.2 is fixedly connected to the bottom end surface of the U-shaped plate 3.4; mounting holes 5.3 are formed in the upper connecting plate 5.1 and the lower connecting plate 5.2, pin shafts 5.4 used for being hinged with the connectors 6 are arranged in the mounting holes 5.3, and the upper end and the lower end of each pin shaft 5.4 are respectively welded with the upper connecting plate 5.1 and the lower connecting plate 5.2. The upper connecting plate 5.1 and the lower connecting plate 5.2 are rigid members made of metal materials and in a triangular shape.

The multi-type combined transport vehicle comprises the concave underframe, wherein side walls 8 are arranged on two longitudinal sides of a middle underframe 1 of the concave underframe, end walls 9 are arranged on two side ends of the concave underframe, and a cavity for containing materials is defined by the middle underframe 1, the side walls 8 and the end walls 9.

The above are only embodiments of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a concave chassis, includes middle part chassis (1) and sets up tip chassis (2) at middle part chassis (1) both ends, its characterized in that: the middle underframe (1) comprises two side beams (3) which are arranged in parallel, a plurality of cross beams (4) which are arranged at intervals along the length direction of the two side beams (3) are arranged between the two side beams (3), and two ends of each cross beam (4) are respectively hinged with hinge seats (5) arranged on the side beams (3) on the same side;

the side beams (3) comprise transverse plates (3.1), vertical plates (3.2) and arc plates (3.3), U-shaped plates (3.4) fixedly connected with the transverse plates are arranged at the bottom ends of the transverse plates (3.1), the bottom ends of the vertical plates (3.2) are vertically and fixedly connected with the transverse plates (3.1), and the top ends of the vertical plates (3.2) are fixedly connected with the lower edges of the arc plates (3.3);

connectors (6) for being hinged with the hinge seats (5) are arranged at two ends of the cross beam (4);

the connector (6) is provided with a plug welding hole (7) for welding with the end part of the cross beam (4);

the hinge base (5) comprises an upper connecting plate (5.1) and a lower connecting plate (5.2), the upper connecting plate (5.1) is fixedly connected with the top end face of the transverse plate (3.1), and the lower connecting plate (5.2) is fixedly connected with the bottom end face of the U-shaped plate (3.4);

the connecting structure is characterized in that mounting holes (5.3) are formed in the upper connecting plate (5.1) and the lower connecting plate (5.2), pin shafts (5.4) which are hinged with the connectors (6) are arranged in the mounting holes (5.3), and the upper end and the lower end of each pin shaft (5.4) are respectively welded with the upper connecting plate (5.1) and the lower connecting plate (5.2).

2. The well chassis of claim 1, wherein: the upper connecting plate (5.1) and the lower connecting plate (5.2) are triangular rigid members made of metal materials.

3. The well chassis of claim 1, wherein: the cross beam (4) is a hollow tubular component made of a metal material, and the connector (6) is a solid tubular component made of a metal material.

4. The utility model provides a multi-type intermodal vehicle which characterized in that: the multi-type combined trolley comprises the concave underframe according to claim 1, 2 or 3, wherein side walls (8) are arranged on two longitudinal sides of the middle underframe (1) of the concave underframe, end walls (9) are arranged on two side ends of the concave underframe, and a cavity for containing materials is enclosed by the middle underframe (1), the side walls (8) and the end walls (9).