Large-tonnage narrow-gauge tunnel project heavy-haul train bogie frame

Abstract

A large-tonnage narrow-gauge tunnel project heavy-haul train bogie frame includes a front end beam, a bottom cross member, an upper towing cross member, a right side member, a brake mount, a rear endmember, a torsion arm mount, a left side member, a front end member, a right side member, a rear end member and a left side member that are welded to form a hollow frame body with upper and lower openings in turn. The bottom cross beam is arranged at the bottom of the frame body, the two ends of the bottom cross beam are welded with the right side beam and the left side beam, the upper traction cross beam is arranged at the top of the frame body and is positioned directly above the bottom cross beam, the two ends of the upper traction cross beam are respectively fixedly connected with the right side beam and the left side beam, and the brake support and the torsion arm seat are all welded on the inner wall of the frame body. The invention has the advantages of simple structure, reliable work, good safety performance and long service life.

Description

technical field [0001] The invention relates to a heavy-duty train bogie frame for a large-tonnage narrow-gauge tunnel project. Background technique [0002] In recent years, with the state's regulation of urban traffic development, the development of tunnel engineering vehicles has expanded with the development of cities, urban traffic pressure has increased, subways have become the main means of transportation in large and medium-sized cities, and the demand for tunnel construction narrow-gauge engineering vehicles has increased ;The large-scale shield machine was put into production, and the matching capacity of traditional small-tonnage tunnel engineering vehicles was insufficient. The 55-70-ton narrow-gauge tunnel engineering vehicles became the main transportation vehicles for subway construction. performance of the locomotive. The bogie frame must not only meet the connection and installation of various systems and assemblies of the locomotive, but also must meet the...

AI Technical Summary

Problems solved by technology

The existing locomotive frame is firstly welded into a box-shaped structural beam by cross-sectional thin plates. The box-shaped structural beam itself is a hollow structure. Relatively complex, process difficulty and high cost

According to the locomotive vehicle design parameters and distribution of structure and weight, considering the vehicle's low speed and heavy load traction, stability and the height of the center of gravity, the structural characteristics of the box girder are difficult to meet the viscosity-weight matching, and the work at low speed Reliability, safety performance and service life requirements

[0004] The draw beam used in the existing bogie frame is basically a welded and fixed structure, which cannot meet the structural requirements of narrow-gauge bogies with small space and compact layout.

The side beams adopt approximately equal strength beams, and the different sections are transitioned by circular arcs. The disadvantage is that the structure is complex, the process is difficult, and the cost is high.

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