CN112046514A

CN112046514A - Roof structure of 100% low-floor tramcar

Info

Publication number: CN112046514A
Application number: CN202010837037.5A
Authority: CN
Inventors: 李岩; 姜士鸿; 李刚
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2020-12-08

Abstract

The utility model provides a 100% low-floor tram roof plate structure which characterized in that: the roof aluminum profile comprises 3 section structural forms, is formed by welding 5 sections, is provided with a sliding groove, and shares an upper beam and a lower beam and a reinforcing rib between the upper beam and the lower beam, wherein the section structure of the end section is provided with four integrated sliding grooves back to back on the upper beam and the lower beam, the upper parts of the integrated sliding grooves are four, the lower parts of the integrated sliding grooves are 5 sliding grooves are adjacent, the upper parts of the integrated sliding grooves are 3 adjacent sliding grooves and are staggered with the lower parts of the integrated sliding grooves, and the other 1 sliding groove at the lower part and the other 1 sliding groove; the invention greatly improves the strength, the rigidity and the like, meets the use conditions and has mature technology, stability and reliability; the integral structure of the aluminum profile replaces the original bonding sliding groove structure, so that the problem of sliding groove falling is avoided fundamentally.

Description

Roof structure of 100% low-floor tramcar

Technical Field

The invention belongs to the technical field of manufacturing of railway vehicle bodies, and particularly relates to a mounting structure of a roof bearing sliding groove of a low-floor tramcar.

Background

In the conventional 100% low-floor tramcar project, a roof plate of a car body steel structure is formed by adopting an aluminum plate composite plate structure, the surface of the roof plate is made of an aluminum plate, and the interior of the roof plate is bonded by a foam material. The outer surface of the composite plate is bonded with the chute for mounting components such as electrical equipment. However, the feedback of individual items leads to the problem of the glue-stripping and dropping quality of the composite roof bonding chute during the on-line operation of the vehicle, and the equipment drops along with the glue-stripping and dropping quality, such as the three-low floor tramcar project and the Wuhan east lake low floor tramcar project.

The bearing chute is greatly influenced by the technological limitation influenced by environment and human factors and the vehicle operation environment (high temperature, high humidity and strong ultraviolet rays) in the bonding process, the condition that the bearing chute falls off due to bonding failure easily occurs in the operation process of a vehicle, and potential safety hazards are brought to vehicle operation.

Disclosure of Invention

The invention aims to provide a roof plate structure of a 100% low-floor tramcar, which can prevent a sliding chute from falling off again, improve the stability of hoisting equipment, reduce the operation and maintenance cost and ensure the driving safety of operation vehicles.

In order to achieve the above object, the present invention provides a roof structure of a 100% low-floor tramcar, which is characterized in that: the roof aluminum profile comprises 3 section structural forms, is formed by welding 5 sections, is provided with a sliding groove, and shares an upper beam and a lower beam and a reinforcing rib between the upper beam and the lower beam, wherein the section structure of the end section is provided with four integrated sliding grooves back to back on the upper beam and the lower beam, the upper parts of the integrated sliding grooves are four, the lower parts of the integrated sliding grooves are 5 sliding grooves are adjacent, the upper parts of the integrated sliding grooves are 3 adjacent sliding grooves and are staggered with the lower parts of the integrated sliding grooves, and the other 1 sliding groove at the lower part and the other 1 sliding groove; the section structure of the middle section bar is that an upper beam and a lower beam are respectively arranged at two sides of the center of the section bar and are respectively provided with 2 sliding chutes, the lower 2 sliding chutes are close to the center, and the upper 2 sliding chutes are far away from the center and are arranged in a staggered way at the outer side of the lower sliding chutes; the section structure between the end section and the middle section is 2 chutes below the upper 3 chutes, the lower 2 adjacent chutes are symmetrically arranged at two sides of the upper independent chute, and the other 2 chutes are adjacent and independently arranged.

Further, the chute is a C-shaped groove.

Furthermore, the reinforcing rib is a left symmetrical inclined rib and a right symmetrical inclined rib, so that the supporting strength is improved.

Furthermore, the chutes are arranged at two close-distance ends of the symmetrical inclined ribs, so that the strength and the rigidity are improved.

The aluminum profile structural scheme is widely applied to multiple domestic and foreign rail passenger car projects such as Nanchang subway No. 2 line, Harbin subway No. 1 line, Malaysia Jilong slope airport line, Shanghai subway No. 17 line, Shenzhen subway No. 2 line, Wuhan city rail transit No. 8 line, Chongqing subway No. 2 line and the like, and as the whole roof plate is designed with different forms of section profile structures and vertically staggered chute forms, the strength, the rigidity and the like are greatly improved, the use conditions are met, and the aluminum profile structural scheme has mature technology, stability and reliability; the integral structure of the aluminum profile replaces the original bonding sliding groove structure, so that the problem of sliding groove falling is avoided fundamentally.

Drawings

FIG. 1 is a cross-sectional view of the roof aluminum profile of the present invention;

FIG. 2 is a cross-sectional view of the end section;

FIG. 3 is a cross-sectional view of an intermediate section;

figure 4 is a section view of the profile between the end section and the intermediate profile.

Detailed Description

Referring to fig. 1-4, the roof aluminum profile comprises 3 section structural forms, which are formed by welding 5 sections 1-5, and each section structural form is provided with a sliding groove, the 3 section structural forms share upper and

lower beams

6 and 7 and reinforcing ribs between the upper and lower beams, wherein the section structural form of the end section is provided with integrated sliding grooves 9 on the upper and lower beams back to back, the upper parts of the integrated sliding grooves are four, the lower parts of the integrated sliding grooves are 5, the lower parts of the integrated sliding grooves are adjacent to 5 sliding grooves, the upper parts of the integrated sliding grooves are adjacent to 3 sliding grooves and are arranged in a staggered manner with the lower parts of the integrated sliding grooves, and the other sliding grooves at; the section structure of the middle section bar is that an upper beam and a lower beam on two sides of the center of the section bar are respectively provided with 2 sliding chutes, the lower 2 sliding chutes are close to the center, and the upper 2 sliding chutes are far away from the center and are arranged in a staggered way on the outer side of the lower sliding chutes; the section structure between the end section and the middle section is 2 chutes below the upper 3 chutes, the lower 2 adjacent chutes are symmetrically arranged at two sides of the upper independent chute, and the other 2 chutes are adjacent and independently arranged. The spout be C type groove, strengthening

rib

8, 10 be one left right symmetry diagonal rib, spout 9 establish at the both ends department that symmetry diagonal rib is closely.

Claims

1. The utility model provides a 100% low-floor tram roof plate structure which characterized in that: the roof aluminum profile comprises 3 section structural forms, is formed by welding 5 sections, is provided with a sliding groove, and shares an upper beam and a lower beam and a reinforcing rib between the upper beam and the lower beam, wherein the section structure of the end section is provided with four integrated sliding grooves back to back on the upper beam and the lower beam, the upper parts of the integrated sliding grooves are four, the lower parts of the integrated sliding grooves are 5 sliding grooves are adjacent, the upper parts of the integrated sliding grooves are 3 adjacent sliding grooves and are staggered with the lower parts of the integrated sliding grooves, and the other 1 sliding groove at the lower part and the other 1 sliding groove; the section structure of the middle section bar is that an upper beam and a lower beam are respectively arranged at two sides of the center of the section bar and are respectively provided with 2 sliding chutes, the lower 2 sliding chutes are close to the center, and the upper 2 sliding chutes are far away from the center and are arranged in a staggered way at the outer side of the lower sliding chutes; the section structure between the end section and the middle section is 2 chutes below the upper 3 chutes, the lower 2 adjacent chutes are symmetrically arranged at two sides of the upper independent chute, and the other 2 chutes are adjacent and independently arranged.

2. A 100% low-floor tram roof panel structure according to claim 1, characterized in that: the chute is a C-shaped groove.

3. A 100% low-floor tram roof panel structure according to claim 1, characterized in that: the reinforcing rib is a left symmetrical oblique rib and a right symmetrical oblique rib.

4. A 100% low-floor tram roof panel structure according to claim 1, characterized in that: the chutes are arranged at two ends of the symmetrical inclined ribs in close distance.