Axle box external subway bogie with integrated swing bolster and hoisting support device

Abstract

An axle box external subway bogie with an integrated swing bolster and a hoisting support device belongs to the field of railway vehicle bogie devices and comprises a framework, the swing bolster, a wheel set device, a trapezoidal axle box device and a secondary suspension system. A cross beam and a side beam of the framework are of a box-shaped structure. The cross beam upper cover plate also serves as a side beam middle upper cover plate, a motor lifting seat upper cover plate and a gear box lifting seat upper cover plate, and the cross beam lower bottom plate also serves as a side beam middle lower bottom plate, a motor lifting seat lower bottom plate and a gear box lifting seat lower bottom plate; and trapezoidal axle box devices are arranged on the outer sides of wheels of the wheel set devices, upper cover plates in the middles of side beams are fixedly connected with hoisting supporting devices, and side bearings with grooves are fixedly connected to the tops of swing bolsters. The number of welding seams is effectively reduced, stress concentration is reduced, the efficiency of car falling and overhauling procedures is improved, and the overhauling and debugging process of height matching and leveling of the swing bolster and the car body floor end face and the platform after wheel turning is remarkably improved; and the wheel can be effectively protected, and the service life of the side bearing is long.

Description

technical field [0001] The invention belongs to the field of rail vehicle bogie devices, in particular to an axle box external subway bogie with an integrated bolster and a lifting support device. Background technique [0002] The bogie frame of the existing domestic subway cars is usually integrally formed by casting, or welded into box-shaped beams and box-shaped side beams by many plates, and then the box-shaped beams and box-shaped side beams are welded together to form an integral box type frame. The primary suspension system is based on figure 1 In the structure of the shown trapezoidal axle box device 4, the trapezoidal axle box device 4 is located in the axle box mounting seat at the end of the frame side beam 9, and the trapezoidal axle box device 4 is rotatably connected to the axle shaft on the wheel 10 inner side. However, the existing bogies have the following disadvantages or problems: [0003] First of all, the overall casting frame has poor craftsmanship, ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the large number of overall frame welds existing in existing bogies may easily cause frame welding deformation or cause high stress at local positions of the frame, and the built-in axle box has the risk of poor vehicle stability and easy damage to the wheels, side bearings Dust and friction particles are easy to enter the gaps, causing scratches and severe wear on the side bearings, and the technical problem of adding a height adjustment pad between the air spring and the bolster is time-consuming and laborious. The invention provides an integrated cradle Axle box external subway bogie with pillow and lifting support device

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