D-series high-speed train chassis turnover tool

Abstract

The invention discloses a D-series high-speed train chassis turnover tool, and belongs to the field of welding turnover devices for D-series high-speed train locomotive chassis. The D-series high-speed train chassis turnover tool comprises a side beam positioning frame, two bottom frame end positioning frames, two positioner connection seats, a plurality of side beam linear section positioning devices, two side beam arc-shaped section positioning devices, a plurality of chassis end arc-shaped end plate supporting seats, an KK end train hook plate positioning device and an FE end train hook plate positioning device. The D-series high-speed train chassis turnover tool can be used for conducting coaxial positioning on rotation axes of chassis of which one-surface welding is preliminarily completely, both the KK end train hook plate positioning device and the FE end train hook plate positioning device are located on the sagging surfaces of the short edges of a rectangular frame structure,accordingly, the high symmetry of the overall structure in the turning process can be ensured, thus, the D-series high-speed train chassis turnover tool can be directly used for conducting overall turning on the preliminary welding structure of the chassis without the enough structure strength, and the welding precision of the front surfaces and the rear surfaces of the chassis and the symmetry ofthe overall structure are ensured.

Description

technical field [0001] The invention belongs to the field of a welding overturning device for an underframe of an EMU head car, and in particular relates to an overturning tool for an underframe of an EMU. Background technique [0002] The high-speed driving characteristics of EMUs and other trains determine that the manufacturing process must adopt more stringent high standards to ensure the overall structural strength and processing accuracy of the train. Such as figure 1 with figure 2 The underframe 11 of the head car of a certain type of EMU shown includes two side beams 11-1, FE end 11-2, KK end 11-3 and floor 11-4, wherein the FE end is the first end underframe of the head car The popular abbreviation of the end, the KK end is the popular abbreviation of the bottom frame end of the two-position end of the head car, so the FE end 11-2 and the KK end 11-3 can be collectively referred to as the bottom frame end. [0003] Such as image 3 with Figure 4 As shown, the...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem that the existing large turning machine cannot be used for the coaxial positioning of the rotation axis of the bottom frame with only preliminary single-sided welding due to the lack of suitable docking equipment, and at the same time it is impossible to ensure the high symmetry of the overall structure during the turning process, Therefore, it cannot be directly used to turn over the preliminary welded structure of the chassis that does not have sufficient structural strength, and the existing old technology of turning the overall structure of the chassis up and down with the help of cranes and slings etc. The two clamping and positioning operations before and after the flipping operation are extremely cumbersome. It requires accurate measurement of a large number of key dimensions, and repeated adjustments of conventional vertical positioning clamps and horizontal tensioners, resulting in low operating efficiency. , consume a large amount of production man-hours and manpower and material resources, seriously restrict the production progress and cannot reduce the technical problems of manufacturing costs, the invention provides a kind of EMU underframe flip tooling

Images