WO2023092613A1 - Rail train, and locomotive and process for manufacturing locomotive - Google Patents

Abstract

Disclosed in the present invention are a rail train, and a locomotive and a process for manufacturing the locomotive. The locomotive comprises: an inner skin and an outer skin; a reinforcing beam located between the inner skin and the outer skin, the reinforcing beam and the outer skin being formed by means of curing; and a foam core, which fills the space between the inner skin and the outer skin, wherein the reinforcing beam is embedded in the foam core, and the inner skin, the outer skin and the reinforcing beam are all integrally formed by compression molding of a carbon fiber composite material. The carbon fiber composite material has a small specific gravity and excellent mechanical properties such as specific strength, specific stiffness and tensile strength, and foam is lightweight, such that the mechanical properties of a product structure can be met while the weight of a product is reduced. Therefore, the locomotive cured by means of the materials can reduce the problems caused by deformation while achieving a light weight. Since the reinforcing beam and the outer skin are formed by means of curing, the outer skin and the reinforcing beam can be connected more firmly, thereby solving the problem of an improper assembly relationship caused by deformation generated when the reinforcing beam is independently cured, and also shortening the production period and reducing costs.

Description

A kind of rail train and train head and the manufacturing process of train head

This application claims the priority of the Chinese patent application submitted to the China Patent Office on November 24, 2021, with the application number 202111404019.9, and the title of the invention is "A Rail Train, Train Head and Manufacturing Process for Train Head", the entire content of which has been passed References are incorporated in this application.

technical field

The invention relates to the technical field of rail transportation, in particular to a rail train, a train head and a manufacturing process for the train head.

Background technique

High-speed trains are currently one of the core roles of my country's rail transit, and the front of the train is undoubtedly the most critical part of the high-speed train.

At present, the traditional train locomotive is made of aluminum alloy and processed by a process integrating welding and riveting. However, in the rapid development of high-speed trains, due to the problems of heavy weight, high energy consumption, and high operating costs of metal materials, they do not conform to the lightweight development concept of the times.

In addition, the use of aluminum alloy welding will lead to problems such as many structural splicing positions, large welding volume, large welding deformation, and high assembly difficulty; and the welding process is a special process, with many uncontrollable factors, and the welding process of aluminum alloy due to thermal expansion and contraction The deformation caused by other reasons will cause huge deformation of the front window during vehicle operation, and even directly cause the windshield to break due to stress concentration.

Therefore, how to reduce the weight of the vehicle head and reduce the problems caused by deformation is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In view of this, the present invention provides a train locomotive, which can reduce the weight of the locomotive and reduce problems caused by deformation. In addition, the present invention also needs to provide a rail train having the above-mentioned train locomotive. In addition, the present invention also needs to provide a manufacturing process of the above-mentioned train head.

To achieve the above object, the present invention provides the following technical solutions:

A locomotive comprising:

Inner and outer skins;

A reinforcement beam positioned between the inner skin and the outer skin, the reinforcement beam and the outer skin are solidified and formed;

A foam sandwich core filled between the inner skin and the outer skin, the reinforcing beam is embedded in the foam sandwich core;

The inner skin, the outer skin and the reinforcing beam are integrally molded by carbon fiber composite material.

Preferably, in the above-mentioned train head, the foam sandwich core is a hard fireproof foam layer.

Preferably, in the above train head, the reinforcing beam is a rectangular wave structure reciprocating between the inner skin and the outer skin.

Preferably, in the above-mentioned train head, an embedded part for connecting with the vehicle chassis is pre-embedded between the inner skin and the outer skin, and the embedded part is embedded in the foam sandwich core.

Preferably, in the above-mentioned train head, the embedded part is an aluminum profile with threads.

Preferably, in the above-mentioned train head, the side of the inner skin connected to the reinforcing beam and the side of the outer skin connected to the reinforcing beam are both provided with an adhesive film.

Preferably, in the above-mentioned train head, the thickness of the inner skin and the outer skin are the same, and both are greater than the thickness of the single beam of the reinforcing beam.

A rail train, comprising a locomotive, wherein the locomotive is the locomotive described in any one of the above.

A manufacturing process for a locomotive, comprising:

Lay the outer skin and reinforcing beams sequentially on the hood forming mold, and set the first temperature and first pressure to co-bond and solidify the outer skin film and reinforcing beams, and obtain the first structure after airing to room temperature pieces;

Pave the foam sandwich in the gap of the reinforcing beam of the first structural member until the opposite side of the outer skin is a plane;

On the plane side, the adhesive film of the inner skin and the inner skin are secondarily cured and molded at a second temperature and a second pressure, and after airing to room temperature, the mold is demoulded and repaired to obtain the second structural member, and the inner skin, outer skin and reinforcement The beams are all carbon fiber composite materials;

Connect the second structural member with the chassis to obtain the front.

The invention provides a train locomotive, which is obtained by curing and processing carbon fiber composite materials and foam as raw materials. Due to the small specific gravity of the carbon fiber composite material, it has excellent mechanical properties such as specific strength, specific stiffness, and tensile strength, and the weight of the foam is relatively light. , while reducing the weight of the product, the mechanical properties of the product structure can be satisfied. Therefore, the train head cured with the above materials can achieve weight reduction and reduce the problems caused by deformation.

In addition, since the reinforcing beam and the outer skin are cured and formed, the connection between the outer skin and the reinforcing beam can be tightened, thereby solving the problem of improper assembly caused by the deformation of the reinforcing beam when it is solidified alone, and shortening the length of time. The production cycle reduces the cost.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the material lay-up structure of the locomotive disclosed in the embodiment of the present invention;

Fig. 2 is a flow chart of the manufacturing process of the locomotive disclosed in the embodiment of the present invention.

Detailed ways

The invention discloses a train locomotive, which realizes the weight reduction of the locomotive and reduces problems caused by deformation. In addition, the invention also discloses a rail train with the above-mentioned train head. In addition, the invention also discloses a manufacturing process of the above-mentioned train head.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in FIG. 1 , the present application discloses a train head, including an inner skin 2 , an outer skin 1 , a reinforcing beam 4 and a foam sandwich 3 . Wherein, the inner skin 2 and the outer skin 1 serve as the outer installation base of the entire shell structure. Specifically, the above-mentioned reinforcing beam 4 is located between the inner skin 2 and the outer skin 1, and the reinforcing beam 4 and the outer skin 1 are cured and formed, and the foam sandwich 3 is filled between the inner skin 2 and the outer skin 1, The above-mentioned reinforcing beam 4 is embedded in the foam sandwich core 3; the inner skin 2, the outer skin 1 and the reinforcing beam 4 are integrally molded by carbon fiber composite material. The train locomotive in this application is obtained by solidifying and processing carbon fiber composite materials and foam as raw materials. Because the specific gravity of carbon fiber composite materials is small, the mechanical properties such as specific strength, specific stiffness, and tensile strength are excellent, and the weight of foam is relatively light. While the weight of the product is reduced, the mechanical properties of the product structure can be satisfied. Therefore, the train head cured with the above materials can achieve weight reduction and reduce the problems caused by deformation.

In addition, since the reinforcement beam 4 and the outer skin 1 are solidified and formed, the connection between the outer skin 1 and the reinforcement beam 4 can be made more tightly, thereby solving the problem of improper assembly caused by the deformation generated when the reinforcement beam 4 is solidified alone , At the same time, the production cycle is shortened and the cost is reduced.

In a specific embodiment, the above-mentioned foam sandwich core 3 is a hard fire-proof foam layer. By setting the foam sandwich core 3 to have a fire-proof function, the safety of the train can be effectively ensured and the occurrence of fire can be avoided. In practice, the foam core 3 can be configured as foam integrated with other functions, such as insulation or heat preservation, according to different needs.

In a preferred embodiment, the above-mentioned reinforcing beam 4 is a rectangular structural member reciprocating between the inner skin 2 and the outer skin 1 . A specific shape of the reinforcement beam 4 is defined here, and its corresponding shape can be set according to the function of the reinforcement beam 4 in practice. Specifically, since the function of the reinforcing beam 4 is to increase the strength between the inner skin 2 and the outer skin 1 to ensure the strength of the front, it is necessary to connect the reinforcing beam 4 to the inner skin 2 and the outer skin 1, in order to ensure the strength The uniformity of the reinforcing beam 4 is preferably arranged symmetrically. Therefore, the shape and size of the reinforcing beam 4 meeting the above requirements are within the scope of protection.

In order to realize the connection between the front of the vehicle and the underframe, preferably, an embedded part for connecting with the underframe is pre-embedded between the inner skin 2 and the outer skin 1, and the embedded part is embedded in the foam sandwich core 3 . Since the skin part of the train head disclosed in this application is an integrally solidified structure, in order to ensure the overall strength and integrity, the connection between the head cover of the headstock and other components is realized by pre-embedded connectors, that is, the set Embedded parts are not limited to being connected to the underframe of the vehicle, but can also be connected to other parts of the train, such as the car body.

The embedded part disclosed in this application is an aluminum profile with threads. The material and type of the embedded part can be set according to different connection requirements and strength requirements. For example, the embedded part can also be set to other materials or have a Clamps for snap-in connections, etc.

In a specific embodiment, in order to achieve a stable connection between the inner skin 2 and the outer skin 1 and the reinforcement beam 4, preferably, the inner skin 2 and the outer skin 1 are provided with an inner skin for connecting with the reinforcement beam 4 The adhesive film 5 of the skin 2, and the adhesive film 5 of the outer skin 1 for connecting with the reinforcing beam 4 is arranged on the opposite side of the outer skin 1 and the inner skin 2. The co-bonding of the skin and the reinforcing beam 4 can be realized by setting the adhesive film 5 under preset temperature and pressure conditions, so as to ensure the stability of the connection.

In addition, the above-mentioned inner skin 2 and foam core 3 are cured and molded, and the curing method can ensure the stability of the connection between the inner skin 2 and the foam core 3 , and reduce the difficulty of assembly while ensuring the strength. The thickness of the inner skin 2 and the outer skin 1 is the same, and both are greater than the thickness of the single beam of the reinforcement beam 4 . The single beam here is a straight beam in the reciprocating bending of the reinforcing beam 4 .

The present application also discloses a rail train, including a train locomotive, wherein the train locomotive is the train locomotive disclosed in the above embodiment, therefore, the rail train with the train locomotive also has all the above-mentioned technical effects, and will not be repeated here Let me repeat them one by one.

As shown in Figure 2, in addition, the application also discloses a manufacturing process of a locomotive, which specifically includes the following steps:

Step S1: Curing the first structural member.

Lay the outer skin and reinforcement beams sequentially on the hood molding mold of the train head, set the first temperature and first pressure to co-bond and solidify the outer skin adhesive film and reinforcement beams, and dry to room temperature to obtain first structural member.

In this application, the reinforcement beams are directly paved on the uncured outer skin, and the two are cured together. This method can make the connection between the outer skin and the reinforcement beam more tight, and solve the problem of improper assembly relationship between the two caused by the deformation of the reinforcement beam when it is solidified alone, and at the same time shorten the production cycle and reduce the cost.

Step S2: laying the foam sandwich.

Pave the foam sandwich in the gap of the reinforcing beam of the first structural member until the opposite side of the outer skin is a plane. Due to the structure of the reinforcement beam itself, multiple cavities will be formed after solidification with the outer skin. The operation of this step is to fill the foam cores in these cavities so that the reinforcement beams are embedded in the foam cores. On the one hand, it can improve the strength, on the other hand, it can be used as the base for the foam sandwich. In order to ensure the installation with the inner skin, preferably, the side connected to the inner skin is processed into a plane, so as to increase the contact area between the inner skin and the foam sandwich core.

Step S3: Curing the second structural member.

On the plane side, the adhesive film of the inner skin and the inner skin are secondarily cured and molded under a second temperature and a second pressure, and after airing to room temperature, the mold is demoulded and the shape is repaired to obtain a second structural part.

The process of combining co-curing and secondary curing is adopted to realize the integrated design and manufacture, so that the outer skin, reinforced beam, foam sandwich and inner skin can be better integrated, and the difficulty of assembly can be reduced. It can not only ensure the strength, but also Avoid the problem of welding deformation.

Step S4: Connect the second structural member to the vehicle chassis to obtain the vehicle front.

Specifically, embedded parts connected to the underframe of the vehicle are pre-embedded in the foam sandwich core, and are threadedly connected with the underframe of the vehicle through the embedded parts, so as to assemble the front of the vehicle.

The inner skin, outer skin and reinforcement beams in this application are all carbon fiber composite materials, and are formed by curing. Using carbon fiber composite materials and foam as raw materials, carbon fiber composite materials have a small specific gravity and excellent mechanical properties such as specific strength, specific stiffness, and tensile strength. The foam is light in weight, which can meet the mechanical properties of the product structure while reducing the weight of the product.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

A train locomotive, characterized in that it comprises: inner skin (2) and outer skin (1); A reinforcement beam (4) located between the inner skin (2) and the outer skin (1), the reinforcement beam (4) and the outer skin (1) are solidified and formed; A foam sandwich core (3) filled between the inner skin (2) and the outer skin (1), the reinforcing beam (4) is embedded in the foam sandwich core (3); The inner skin (2), the outer skin (1) and the reinforcing beam (4) are integrally molded by carbon fiber composite material. The train head according to claim 1, characterized in that, the foam sandwich core (3) is a hard fireproof foam layer. The train head according to claim 1, characterized in that the reinforcing beam (4) is a rectangular wave structure reciprocating between the inner skin (2) and the outer skin (1). The train head according to claim 1, characterized in that, a pre-embedded part for connecting with the vehicle chassis is pre-embedded between the inner skin (2) and the outer skin (1), and the pre-embedded The parts are embedded in the foam sandwich core (3). The train locomotive according to claim 4, wherein the embedded part is an aluminum profile with thread. The train head according to claim 1, characterized in that, the side of the inner skin (2) connected to the reinforcing beam (4) and the outer skin (1) and the reinforcing beam (4 ) are provided with adhesive film (5) on the connected side. The train head according to claim 6, characterized in that, the thickness of the inner skin (2) and the outer skin (1) are the same, and both are greater than the thickness of a single beam of the reinforcing beam (4). A rail train, comprising a locomotive, characterized in that the locomotive is the locomotive according to any one of claims 1-7. A manufacturing process of a locomotive, characterized in that it comprises: Lay the outer skin and reinforcing beams sequentially on the hood forming mold, and set the first temperature and first pressure to co-bond and solidify the outer skin film and reinforcing beams, and obtain the first structure after airing to room temperature pieces; Pave the foam sandwich in the gap of the reinforcing beam of the first structural member until the opposite side of the outer skin is a plane; On the plane side, the adhesive film of the inner skin and the inner skin are secondarily cured and molded at a second temperature and a second pressure, and after airing to room temperature, the mold is demoulded and repaired to obtain the second structural member, and the inner skin, outer skin and reinforcement The beams are all carbon fiber composite materials; Connect the second structural member with the chassis to obtain the front.

Images