Load increasing container flat wagon body applicable to running on Thailand meter-gage railway

Abstract

The invention relates to a load increasing container flat wagon body applicable to running on a Thailand meter-gage railway. The load increasing container flat wagon body is characterized by comprising a middle beam assembly, two side beams, two end beam assemblies, two sleeper beam assemblies, four single-lock cross beam assemblies and two double-lock cross beam assemblies, wherein the two side beams are arranged in parallel on the left side and the right side of the middle beam assembly respectively and form a longitudinal beam of the body together with the middle beam assembly; the two end beam assemblies are arranged at the two ends of the longitudinal beam respectively and are transversely connected with the longitudinal beam respectively; the two sleeper beam assemblies are arranged on the longitudinal beam inside the two end beam assemblies respectively and are connected with the longitudinal beam respectively; and the four single-lock cross beam assemblies and the two double-lock cross beam assemblies are divided into a left group and a right group which are symmetrically arranged between the middle beam assembly and the side beams on the inner side of the sleeper beam assemblies respectively, and are transversely connected with the middle beam assembly and the side beams respectively. Through the load increasing container flat wagon body, the dynamic performance of a vehicle at the running speed of 100Km/h can be improved, the manufacturability can be improved, the hidden trouble in manufacturing quality can be reduced, the cross beams, the side beams and a locking device can be rationally arranged, the stressing condition of the body can be improved, and the service life of the vehicle can be prolonged.

Description

technical field [0001] The invention relates to a container flat car body, in particular to a load-increasing container flat car body suitable for the operation of Thailand's meter-gauge railway. Background technique [0002] Thailand’s container railway transportation is mainly concentrated between the capital Bangkok and the deep-water wharf in the southern bay. This section of the line is mainly made of 80-100 lb (36-45kg) steel rails. The line is relatively straight, the minimum curve radius is R800m, and the maximum slope is 10‰ , the maximum speed of the vehicle is 80Km / h. The maximum axle load of the existing container flat cars in Thailand does not exceed 16t. Due to the limitation of the axle load of railway vehicles, the maximum load of the vehicles does not exceed 48t. An existing container flat car can only transport a 30.48t container. However, most of the existing vehicles in Thailand can only load two 24t 20ft containers or one 30.48t 40ft container at a time...

AI Technical Summary

Problems solved by technology

At present, the existing car body mostly adopts two 250mm high hot-rolled channel steel welded together to form a longitudinally penetrating center beam, and adopts a quilted frame structure composed of angle steel behind the pillow. The torsional and torsional rigidity is not large, and the center of gravity is too high, which is not conducive to the improvement of vehicle dynamics

In addition, more welds need to be arranged on the middle beam of the above-mentioned truss structure, and the manufacturing process is poor. The welds on the main stress-bearing parts cause stress concentration to deteriorate, weld fatigue cracks occur frequently, main body maintenance is frequent, and the service life is shortened.

[0004] Due to the low rigidity of the center beam, the existing car body is supplemented by adding more transverse beams. There are as many as 8 sets of transverse beams behind the pillow. The assembly process is cumbersome and the weight increases.

Moreover, the layout of these transverse beams is relatively isolated from the layout of the container locking device, and the force of the locking load-bearing structure at the first stress point of the car body cannot be continuously transmitted to the middle beam frame through the transverse beams, resulting in the load-bearing structure of the lock. Concentrated force, large local deformation

In addition, the width of the Thai railway limit is small. Due to this limitation, the difference between the width of the container flat car body and the width of the container corner fittings is small, which makes it difficult to lock the load-bearing structure and the position of the side beams, and easily cause the stiffness of the side beams to be lost. , there is a risk of a sharp increase in the local stress of the side beam

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