CN216636484U

CN216636484U - Reinforced connection structure of plate girder type vehicle body and underframe

Info

Publication number: CN216636484U
Application number: CN202120996260.4U
Authority: CN
Inventors: 谈源; 常忠伟; 陈浩; 汤娟
Original assignee: Changzhou New Intelligent Technology Co Ltd
Current assignee: Changzhou New Intelligent Technology Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-05-31
Anticipated expiration: 2031-05-11

Abstract

The utility model relates to the technical field of railway vehicles, in particular to a reinforced connecting structure of a plate-girder type vehicle body and an underframe, which comprises a vehicle body side wall, wherein notches are formed in one ends, close to the underframe, of the vehicle body side wall, the notches comprise an outer skin of the vehicle body side wall and a first skin which is horizontally arranged, a reinforcing part is connected to the underframe, a first contact surface and a second contact surface are arranged on the reinforcing part, the reinforcing part is embedded into a clamping groove, and the outer skin and the first skin are respectively fixed to the first contact surface and the second contact surface through rivets. According to the utility model, through the arrangement of the notches and the reinforcing parts, bilateral fixed connection is realized, the connection reliability is improved, the integral strength of the vehicle body structure is increased, and thus the mechanical properties of the vehicle body in all directions are met.

Description

Reinforced connection structure of plate girder type vehicle body and underframe

Technical Field

The utility model relates to the technical field of railway vehicles, in particular to a reinforced connecting structure of a plate girder type vehicle body and an underframe.

Background

With the wide application of carbon fiber composite materials in light rail trains and subways, the body structure of a rail vehicle is divided into a chassis, a side wall, a roof, an end wall and other large components, on the basis of realizing light weight, in order to not influence the overall appearance of the vehicle body and meet aerodynamics, the outer surface of the vehicle body is not allowed to have protruding parts, and because the chassis is a standard product and the size cannot be changed or reduced at will, the vehicle body can only adopt a connection mode of a single mounting surface.

However, the connection method of the single mounting surface is poor in reliability, so that the overall strength of the vehicle body structure is low, and the load bearing capacity of the entire vehicle body is reduced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the reinforced connecting structure of the plate girder type vehicle body and the underframe is provided, the connecting reliability is improved, the overall strength of the vehicle body structure is increased, and the load bearing capacity of the vehicle body is improved.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a reinforced connecting structure of a plate girder type vehicle body and an underframe comprises a vehicle body side wall, wherein notches are formed in one end, close to the underframe, of the vehicle body side wall, and each notch comprises a vehicle body side wall outer skin and a first skin which is horizontally arranged;

the chassis is connected with a reinforcing piece, the reinforcing piece is provided with a first contact surface and a second contact surface, the reinforcing piece is embedded into the clamping groove, and the outer skin and the first skin are respectively fixed on the first contact surface and the second contact surface through rivets.

Further, the reinforcing piece is welded and fixed with the underframe, and the reinforcing piece is a through-length metal pipe.

Further, the metal pipe is a rectangular pipe or a rectangular pipe.

Furthermore, the metal tube is made of stainless steel.

Further, the notch is shaped, and the first skin and the outer skin are integrally formed in a curing mode.

Further, a second skin is arranged on one side, away from the underframe, of the first skin, and the second skin extends upwards to the cross beam.

Further, the second skin is formed by curing double-layer carbon fiber prepreg.

Furthermore, the upright post of the side wall of the vehicle body is fixedly connected to the second skin.

The utility model has the beneficial effects that: according to the utility model, the two mounting surfaces are expanded into two by adding the rectangular pipes or the rectangular pipes on the underframe under the condition of not influencing the appearance and the pneumatic appearance, so that bilateral fixed connection is realized, the connection reliability is improved, the integral strength of the vehicle body structure is increased, the load bearing capacity of the vehicle body is improved, and the mechanical property of the vehicle body in each direction is met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a plate girder vehicle body according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the connection of stiffeners to the outer skin and the first skin in an embodiment of the utility model;

FIG. 4 is a schematic structural view of a second skin in an embodiment of the present invention;

FIG. 5 is a partial enlarged view of FIG. 1 at B;

fig. 6 is a schematic structural diagram of a pillar and a second skin in an embodiment of the utility model.

Reference numerals are as follows: 1. a vehicle body side wall; 11. an outer skin; 12. a first skin; 13. a second skin; 2. a reinforcement; 21. a first contact surface; 22. a second contact surface; 3. and (4) a column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The reinforced connecting structure of the plate girder type vehicle body and the underframe as shown in fig. 1 to 6 comprises a vehicle body side wall 1, wherein one end of the vehicle body side wall 1 close to the underframe is provided with a notch, and the notch comprises an outer skin 11 of the vehicle body side wall 1 and a first skin 12 which is horizontally arranged; the chassis is connected with the reinforcing part 2, the reinforcing part 2 is provided with a first contact surface 21 and a second contact surface 22, the reinforcing part 2 is embedded into the clamping groove, and the outer skin 11 and the first skin 12 are fixed on the first contact surface 21 and the second contact surface 22 through rivets. The plate-girder type vehicle body is one of carbon fiber composite vehicle bodies, carbon fiber prepreg is laid and cured for molding, then pre-molded components such as a cross beam, a vertical beam and the like are laid on the cured skin by adopting dry and wet skins, and finally, the components are integrally cured for molding. Compared with the prior art, through the reinforcing piece added on the underframe, under the condition that the appearance and the pneumatic appearance are not influenced, the two mounting surfaces are expanded, so that the bilateral fixed connection is realized, the connection reliability is improved, the overall strength of the vehicle body structure is increased, the load bearing capacity of the vehicle body is improved, and the mechanical property of the vehicle body in each direction is met.

In the preferred embodiment of the utility model, the reinforcing part 2 is welded and fixed with the underframe, the reinforcing part 2 is a through-long metal pipe, and the through-long metal pipe is welded on the underframe, so that the assembly time is reduced, and the assembly efficiency is improved.

Preferably, the metal pipe is a rectangular pipe or a rectangular pipe, so that the load using requirement is met, the processing procedures are reduced, and the processing cost is reduced.

On the basis of the above embodiment, the metal tube is made of stainless steel.

In the preferred embodiment of the utility model, the slot is shaped and the first skin 12 is integrally cured with the outer skin 11. The notch is arranged, so that two contact surfaces are effectively guaranteed to exist between the side wall 1 of the vehicle body and the reinforcing part 2, and the reliability of connection is further guaranteed through the integrated curing and forming process.

In order to further increase the reliability of the connection, the side of the first skin 12 remote from the underframe is provided with a second skin 13, and the second skin 13 extends upwards to the cross beam, increasing the strength of the notch.

In addition to the above embodiments, the second skin 13 is formed by curing a double-layer carbon fiber prepreg.

In order to ensure the overall strength of the vehicle body structure, the upright column 3 of the vehicle body side wall 1 is fixedly connected to the second skin 13.

According to the utility model, the two mounting surfaces are expanded into two by adding the rectangular pipes or the rectangular pipes on the underframe under the condition of not influencing the appearance and the pneumatic appearance, so that bilateral fixed connection is realized, the connection reliability is improved, the integral strength of the vehicle body structure is increased, the load bearing capacity of the vehicle body is improved, and the mechanical property of the vehicle body in each direction is met.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A reinforced connecting structure of a plate girder type vehicle body and an underframe comprises a vehicle body side wall (1), and is characterized in that one end, close to the underframe, of the vehicle body side wall (1) is provided with a notch, and the notch comprises an outer skin (11) of the vehicle body side wall (1) and a first skin (12) which is horizontally arranged;

connect reinforcement (2) on the chassis, be equipped with first contact surface (21) and second contact surface (22) on reinforcement (2), reinforcement (2) embedding in the notch, outer skin (11) with first skin (12) all are fixed respectively through the rivet first contact surface (21) with on the second contact surface (22).

2. The reinforced connection structure of a plate girder type vehicle body and an underframe according to claim 1, wherein the reinforcement (2) is welded and fixed with the underframe, and the reinforcement (2) is a through long metal pipe.

3. The plate girder vehicle body and underframe reinforcing structure as defined in claim 2, wherein the metal pipe is a rectangular pipe or a rectangular pipe.

4. The plate girder type vehicle body and underframe reinforcing structure as claimed in claim 3, wherein the metal pipe is made of stainless steel.

5. The reinforced connection of a plate girder vehicle body and an underframe according to claim 1, wherein the notch is shaped and the first skin (12) is integrally formed by curing with the outer skin (11).

6. The stiffened joint structure of a plate girder vehicle body and an underframe according to claim 5, wherein the side of the first skin (12) remote from the underframe is provided with a second skin (13), the second skin (13) extending up to a cross beam.

7. The plate-girder vehicle body and underframe reinforcing and connecting structure according to claim 6, wherein the second skin (13) is formed by curing double-layer carbon fiber prepreg.

8. The reinforced connection structure of a plate girder type vehicle body and an underframe according to claim 7, characterized in that the pillars (3) of the vehicle body side wall (1) are fixedly connected to the second skin (13).