The present application is a National Phase entry of PCT Application No. PCT/CN2019/114370, filed on Oct. 30, 2019, which claims the priority to Chinese Patent Application No. 201910157014.7, titled “RAIL VEHICLE, DRIVER'S CABIN AND COMPOSITE ALUMINUM PLATE ASSEMBLY”, filed with the China National Intellectual Property Administration on Mar. 1, 2019, the entire disclosures of which are incorporated herein by reference.

FIELD

This application relates to the technical field of rail vehicles, and in particular to a rail vehicle, a cab and a composite aluminum plate assembly.

BACKGROUND

A rail vehicle, as an important vehicle, has been widely used all over the world. With the improvement of people's living standards, more and more people's travel requirements are met. From the perspective of users, it is urgent to study the lightweight, comfort and safety of the rail vehicle, so as to solve customer needs and improve user experience.

The cab of the rail vehicle is located in the front of the rail vehicle, and the structure thereof is quite different from a compartment at other positions. Considering the position particularity of the cab, the structure of the cab of the rail vehicle is also different from other compartments of the vehicle body. Generally, the cab of the rail vehicle mostly adopts an aluminum plate single plate-welding structure. In order to improve the mechanical property of the cab, the welding quantity is large, which causes the poor manufacturability of the cab. Moreover, the weight of the cab is also heavy due to the large welding quantity.

Therefore, a technical problem urgently to be solved by those skilled in the art is how to improve the mechanical property of the cab and reduce the weight of the cab as much as possible.

SUMMARY

A composite aluminum plate assembly is provided according to the present application, which includes at least two aluminum honeycomb profile units. Each aluminum honeycomb profile unit includes a sandwich aluminum honeycomb, a first aluminum plate and a second aluminum plate. The sandwich aluminum honeycomb is filled in between the first aluminum plate and the second aluminum plate. An extended section is provided on a butt-joint side of at least one of the aluminum plates on two sides of each aluminum honeycomb profile unit, and the extended section extends to the outside of the sandwich aluminum honeycomb on this side. The composite aluminum plate assembly further includes a support member, and the strength of the support member is greater than that of the sandwich aluminum honeycomb. Each extended section of the two adjacent aluminum honeycomb profile units is correspondingly assembled and fixedly connected by the support member.

The composite aluminum plate assembly provided according to the present application is formed by at least two aluminum honeycomb profile units, and a connecting position of the two adjacent aluminum honeycomb profile units is connected by the support member which has a greater strength than that of the sandwich aluminum honeycomb, thereby increasing the strength of the connecting position of the two adjacent aluminum honeycomb profile units, effectively avoiding a weld defect and a deformation at a splicing position of the aluminum honeycomb profile unit, and ensuring the weld between the aluminum honeycomb profile units to be reliable and beautiful.

Optionally, the corresponding extended sections of the two adjacent aluminum honeycomb profile units are butt-jointed, and the extended section is provided on the corresponding butt-joint side of the first aluminum plate and the second aluminum plate. A chamber is formed by all the extended sections on the butt-joint sides. The support member is filled in the chamber, and the support member supports and is positioned between the aluminum plates on two sides.

Optionally, the support member is a connecting aluminum honeycomb, and the chamber is at least partially filled with the connecting aluminum honeycomb. A size of a honeycomb unit of the connecting aluminum honeycomb is smaller than that of the sandwich aluminum honeycomb.

Optionally, the support member further includes two auxiliary aluminum plates, and the connecting aluminum honeycomb is sandwiched between the two auxiliary aluminum plates. The two auxiliary aluminum plates are fitted with the extended sections on the corresponding sides, and the corresponding auxiliary aluminum plate covers a butt joint seam formed by the two extended sections on the corresponding side.

Optionally, the support member is an aluminum profile and includes a first auxiliary aluminum plate, a second auxiliary aluminum plate and a reinforcing rib. The first auxiliary aluminum plate is parallel to the second auxiliary aluminum plate. The reinforcing rib supports between the first auxiliary aluminum plate and the second auxiliary aluminum plate. The first auxiliary aluminum plate and the second auxiliary aluminum plate are respectively fitted with the extended sections on the two sides.

Optionally, the first auxiliary aluminum plate and the second auxiliary aluminum plate cover the butt-joint seam formed by the two extended sections on the corresponding side.

Optionally, the support member is a box-shaped aluminum profile, each extended section abuts against and is welded to an external surface on the corresponding side of the support member.

Optionally, the aluminum honeycomb profile unit includes an aluminum profile which is integrally formed and forms a hollow structure. The first aluminum plate and the second aluminum plate are respectively two side surfaces of the aluminum profile. The extended section extends outward from the first aluminum plate and abuts against an upper surface of the box-shaped aluminum profile, and the thickness of the extended section is greater than that of a body of the first aluminum plate. The sandwich aluminum honeycomb is filled in the hollow structure. The second aluminum plate is connected to a side wall of the box-shaped aluminum profile by welding through a connecting plate.

Optionally, the box-shaped aluminum profile is an integrally formed structure. A boss is provided on the upper surface of the box-shaped aluminum profile, and each of two sides of the boss and an end face of the extended section on the corresponding side form a welded groove.

Optionally, the two extended sections that are butt jointed with each other are connected by welding. Or/and the extended section is connected to the support member by welding.

A cab of a rail vehicle is further provided according to the present application, which includes a front half portion and a rear half portion. The front half portion includes a front portion of a side door frame, and the rear half portion includes a rear portion of the side door frame and a roof portion. The front half portion includes a first skeleton structure and an aluminum single plate covered outside the first skeleton structure. The rear half portion includes a second skeleton structure formed by a top curved beam and a side portion lateral beam, and the composite aluminum plate assembly described in any one of the above is covered outside the second skeleton structure.

Because a curved surface of the rear half portion of the rail vehicle changes gently, the composite aluminum plate assembly can be used in the rear half portion of the cab of the rail vehicle, that is, the composite aluminum plate assembly is arranged at the top, the left and the right of the cab. The composite aluminum plate assembly at the top, the left and the right can be welded to form a whole through suitable aluminum honeycomb profile units. This can greatly reduce the welding quantity, reduce welding deformation, improve the stiffness of the cab, meet the requirement of lightweight of the vehicle, and function to insulate the sound and reduce the noise.

In addition, the front half portion of the cab adopts a structure of the aluminum single plate plus a cross rib, which is conducive to realize the complex structure of the front half portion of the cab, and meet the design of small ridge and inverse curve of the front half portion.

The front half portion and the rear half portion of the cab adopts different structural design, which not only meets the requirement of lightweight of the vehicle, but also meets the requirement of industrial design of the artwork.

Optionally, the first skeleton structure includes multiple parallel lateral plates, and further includes a longitudinal plate cross connected with the lateral plate. The first skeleton structure forms a front window mounting skeleton, a front lamp mounting skeleton and a side door lower support skeleton.

Optionally, the number of top curved beams is at least one, and the top curved beam is successively arranged at intervals in a length direction of a vehicle body. Two end portions of the top curved beam are respectively connected to the side portion lateral beam closest thereto.

In addition, a rail vehicle is further provided according to the present application, which includes the composite aluminum plate assembly described in any one of the above, or/and the cab of the rail vehicle described in any one of the above.

