CN111591313A - Lightweight intercity EMUs automobile body - Google Patents

Abstract

A lightweight intercity EMU body, comprising a bottom frame and a side wall, characterized in that: the bottom frame comprises a floor formed by welding aluminum profiles and a side beam of the aluminum profiles, and the floor is hoisted. The under-vehicle equipment is integrated with a C-shaped groove for hoisting the under-vehicle equipment. The side beams are welded on both sides of the floor. The side beams are connected to the bogie area and are provided with bolster mounting beams with mounting interfaces. The mounting interfaces are used to connect Modular bogie, the side walls are composed of ultra-wide doorways on each side, and door frames are installed on the doorways. The door frames are connected by closed profiles, and the strength of the door frame profiles is higher than that of the side wall profiles to ensure the local stiffness and strength of the doorway. The invention has simple structure and light weight, reduces the cost of raw materials, increases the passenger capacity, and reduces energy consumption. It can realize rapid maintenance and overall replacement, and improve the transportation capacity of the entire line of EMUs. The present invention facilitates passengers to get on and off quickly, shortens parking time, and can meet high-density operation requirements.

Description

A lightweight intercity EMU body

technical field

The invention belongs to the technical field of intercity rail vehicle body design, in particular to a lightweight intercity EMU body.

Background technique

With the rapid development of urbanization, the demand for intercity railways is strong, and the state has prioritized the planning and development of intercity rail transit. The main requirements of intercity EMUs: (1) large passenger capacity (2) high density - short parking time, requiring passengers to get on and off quickly (3) easy to repair and maintain, and low maintenance costs.

The status quo of the intercity EMU car body:

(1) The modular bogie is installed on the side beam of the underframe of the vehicle body through the transition bolster integrated on the bogie. At the same time, the underframe side beams are used to hoist the equipment under the car. The side beam profiles of the underframe with the same length as the car body have larger end faces in order to bear the needs, which increases the weight of the car body, which is not conducive to the lightweight of the car body and the improvement of passenger capacity, and increases the energy consumption.

(2) The non-modular bogie is connected to the chassis by welding, bolting or riveting to the bolster, anti-snake shock absorber seat, traction rod seat, etc., and the equipment under the vehicle is hoisted to the beam of the chassis. The structure is complex, the welding volume of the car body is large, the integration degree is not high, and the non-modular bogie is inconvenient for maintenance and overall replacement. The time for maintenance and overall replacement is long, which is not conducive to the rapid turnover of vehicles and affects the entire line of the EMU. Transport capacity.

(3) After the side wall is installed at the door, the door panel is welded, and the stiffness of the door area is weak, which is easy to cause insufficient strength of the door area, especially the door corner, limited width of the door, and long time for passengers to get on and off, which is not conducive to the formation of high-density Intercity EMU rail transit.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high-strength, light-weight, wide-opening vehicle body structure suitable for intercity EMUs and can realize quick replacement and installation of modular bogies. Strength, and make passengers get on and off quickly at the station, and the modular bogie can be quickly installed and repaired.

In order to achieve the above object, the present invention provides a lightweight intercity EMU car body, which includes an underframe and a side wall, and is characterized in that: the underframe includes a floor and a side beam, and the floor is at the equipment position under the assembly car. The integrated C-shaped groove is used to install the under-vehicle equipment. The side beam is processed from profiles. The bolster installation beam is set in the area connected to the bogie. The bolster installation beam has an installation interface. As a whole, the modular bogie is provided with installation interfaces on both sides, the bolster mounting beam and the modular bogie are connected through the installation interfaces, the structure is simple, the interfaces are few, and quick maintenance and overall replacement can be realized. The side wall constitutes the door frame installed at the door, and the maximum net opening is 1400mm. The door frame is connected by closed profiles, and the strength of the door frame profile is higher than that of the side wall profile, which ensures the local stiffness and strength of the door and reduces the weight of the car body.

The C-shaped groove is a C-shaped structure with an opening on the lower side, which is simple in structure and can reduce the weight of the vehicle body.

A plurality of bolster pads are installed on the bolster mounting beam, and the bolster pads are machined as a whole to ensure that the surfaces are on the same plane, so as to solve the assembly difficulty caused by the welding deformation of the chassis, and provide the necessary conditions for the modular bogie. The required installation interface with internal thread ensures the accuracy and strength after installation.

The modular bogie assembled on the bottom frame includes anti-roll torsion bars, anti-snake shock absorbers, air springs, height valve rods, traction rods, lateral shock absorbers and transition bolsters integrated thereon, so Both sides of the transition corbel are provided with internal thread installation interfaces required for connection with the corbel installation beam.

The bolster installation beam and the modular bogie are connected by bolts at the installation interface position, the connection is simple, the maintenance and overall replacement are convenient and time-saving, the turnaround time of the EMU is accelerated, and the transportation capacity is improved.

The door frame formed by the side wall includes left and right door posts and door upper beams. The left and right door posts and door upper beams are bent from closed profiles, and the shape is consistent with the shape of the side wall to ensure the local rigidity and strength of the door. With the large opening door structure, it is convenient for passengers to get on and off quickly.

The positive effects that the present invention produces compared to the prior art are as follows:

The under-vehicle hoisting equipment of the invention is installed on the C-shaped chute integrated on the floor, the C-shaped chute is only set at the required assembly position, the structure is simple and the weight is light, the side beam of the vehicle body does not need to be installed with the under-vehicle equipment, and the side beam bears little weight , there is no need to reserve the installation interface of the under-vehicle equipment, and profiles with smaller cross-section and simple structure can be used. These structural designs can reduce the cost of raw materials on the one hand, and reduce the weight of the vehicle body, increase the passenger capacity, and reduce energy consumption on the other hand. .

The modular bogie assembled on the bottom frame and the bolster mounting beam are connected by bolts at the installation interface, the interface is simple, rapid maintenance and overall replacement can be realized, rapid vehicle turnover can be realized, and the entire line transportation capacity of the EMU can be improved.

The net opening of the door position of the vehicle body of the invention is 1400mm at most, which is far greater than the net opening of the door position of the existing intercity EMU of 800-900mm, which improves the passing ability of getting on and off, facilitates passengers to get on and off quickly, shortens the parking time, and can meet the needs of High-density operational needs and reduce vehicle body weight.

Description of drawings

Figure 1 is an overall view of the vehicle body structure;

Figure 2 is a schematic diagram of the installation interface of the equipment under the floor car;

Figure 3 is a schematic diagram of a corbel installation beam;

Figure 4 is a schematic diagram of a modular bogie;

Figure 5 is the assembly diagram of the bolster installation beam and the modular bogie;

Figure 6 is a schematic diagram of the structure of the doorway formed by the side wall.

Detailed ways

1 to 6, the present invention provides a lightweight intercity EMU car body, including an underframe composition and a side wall composition, and the underframe composition includes a floor 1 and a side beam 2, which are basically the same as the car body. The floor formed by welding long aluminum profiles is integrated with a C-shaped groove 6 at the position of the equipment under the assembly vehicle, which is used to install the equipment under the vehicle. For heavy equipment, double-row chutes are set to increase the bearing capacity. The side beams 2 are processed from profiles and welded on both sides of the floor. The side beams 2 are connected to the bogie area and are provided with bolster mounting beams 3 with installation interfaces. The modular bogie assembled on the base frame 9. There are installation interfaces on both sides of the bolster as a whole. The bolster installation beam 3 and the modular bogie 9 are connected through the installation interfaces. The structure is simple, the interface is few, the installation is convenient and time-saving, and the turnaround time of the EMU is accelerated. Improve transport capacity. The two ends of the chassis are connected with end bearing structures 5, and the bearing structures 5 integrate the installation interfaces of couplers, brake pipelines, and cross-border cables between vehicles. The side wall is composed of 3 extra-wide doorways with an opening of 1700mm on each side, and a door frame 4 with a net opening of 1400mm. The door frame 4 is connected by closed profiles, and the strength of the door frame profiles is higher than that of the side wall profiles. The local stiffness and strength of the doorway, the door frame 4 cooperates with the large opening doorway structure, which improves the passing ability of getting on and off the vehicle, facilitates passengers to get on and off quickly, shortens the parking time, can achieve high-density operation requirements, and can reduce the weight of the vehicle body.

The C-shaped groove 6 is a C-shaped structure with an opening on the lower side, which has a simple structure and can reduce the weight of the vehicle body.

A plurality of bolster pads 7 are installed on the bolster mounting beam, and the bolster pads 7 are machined as a whole to ensure that the surface is the same plane, which solves the assembly difficulty caused by the welding deformation of the chassis, and is a modular bogie. 9 Provide the required installation interface with internal thread to ensure the accuracy and strength after installation.

The modular bogie 9 assembled on the bottom frame includes anti-roll torsion bars, anti-snake shock absorbers, air springs, height valve rods, traction rods, lateral shock absorbers and transition bolsters 8 integrated thereon , both sides of the transition corbel 8 are provided with internal thread installation interfaces required for connection with the corbel mounting beam 3 .

The bolster installation beam and the modular bogie are connected by bolts at the installation interface position, the connection is simple, the maintenance and overall replacement are more convenient and time-saving, the turnaround time of the EMU is accelerated, and the transportation capacity is improved.

The door frame formed by the side wall includes the left and right door posts 11 and the door upper beam 10. The left and right door posts 11 and the door upper beam 10 are bent from closed profiles, and the shape is the same as that of the side wall. Before the door frame is installed The installation holes of the door mechanism and the inner cover plate are processed, and the C-shaped chute is integrated on the beam on the door to provide the installation interface for the door mechanism installation. Since the door frame is composed of closed profiles, and the strength of the door frame material is higher than that of the side wall profiles, the local stiffness and strength of the doorway area can be improved, avoiding the reduction of the rigidity and strength of the vehicle body structure caused by the large number and large opening of the doorway, and solving the stress caused by the doorway. Insufficient strength caused by concentration.

Claims (5)

1. A lightweight intercity EMU car body, comprising an underframe and a side wall, characterized in that: the underframe includes a floor and an edge beam of an aluminum profile welded by an aluminum profile, and the floor is A C-shaped groove is integrated at the equipment position under the hoisting vehicle for hoisting the equipment under the hoisting vehicle. The side beams are welded on both sides of the floor. The side beams are connected to the bogie area. In order to connect the modular bogie, the side wall is composed of an extra-wide doorway on each side, and a door frame is installed on the doorway. 2 . The lightweight intercity EMU body according to claim 1 , wherein the opening of the C-shaped groove is downward, and the number of the C-shaped grooves is arranged in one row or two rows according to the load-bearing requirements. 3 . 3 . The lightweight intercity EMU body according to claim 1 , wherein a plurality of bolster pads are installed on the bolster mounting beam, and the bolster pads are machined to ensure that the surface is same plane. 4 . The lightweight intercity EMU body according to claim 3 , wherein the bolster pad is provided with an internal thread installation interface required for installing a modular bogie, and the module is connected through the internal thread installation interface. 5 . Bogie. 5 . The lightweight intercity EMU body according to claim 1 , wherein the door frame formed on the side wall comprises left and right door pillars and a door upper beam, and the left and right door pillars and the door upper The beam is bent from closed profiles, and its shape is the same as that of the side wall, which ensures that the local stiffness and strength of the doorway area adapt to the doorway structure with large openings, which is beneficial for passengers to get on and off quickly.

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