Motorcycle frame with bent beam

Abstract

The invention discloses a two-wheel curved beam motorcycle frame, wherein a main beam pipe of the motorcycle frame is high in the front part and low in the rear part, the front end of the main beam pipe is welded with a motorcycle head pipe, the back end of the main beam pipe is welded with a hanging seat, a tail frame of the motorcycle frame is low in the front part and low in the rear part, thetail frame is welded with a rear damping support seat, the front ends of two longitudinal beams of the tail frame are welded on the middle part of the main beam pipe, support pipes which are nearly curved to be S-shaped are welded between the longitudinal beams of the tail frame and the hanging seat, the support pipes comprises a left support pipe and a right support pipe, and are asymmetrically arranged on both sides of the tail frame, and a curved angle of a backward curved part where the upper end of the left support pipe is welded with the left longitudinal beam of the tail frame is more forward than a curved angle of a backward curved part where the upper end of the right support pipe is welded with the right longitudinal beam of the tail frame. By improving the structure of the leftsupport pipe of the motorcycle frame, the motorcycle frame has the advantages of increasing the gaps between the left support pipe and the rear wheel tire of the motorcycle, avoiding the friction between the left support pipe and the rear wheel tire of the motorcycle and ensuring the strength of the motorcycle frame.

Description

Technical field [0001] The invention relates to a two-wheeled motorcycle frame, in particular to a two-wheeled curved beam motorcycle frame. Background technique [0002] The two-wheel curved beam motorcycle is very popular among users because of its lightweight body and special curved beam structure, which makes it easy for riders to get on and off the vehicle. Due to the lightweight body and the special curved beam structure, the components of this motorcycle have a compact layout, and the structure of the frame is simple and compact. Therefore, the height and width of the frame are usually strict. Once the size of the frame is Oversized, it loses the lightweight characteristics of a two-wheeled curved beam motorcycle. At present, through years of development and production of two-wheel curved beam motorcycles, the width of the frame, the dimensions of various parts and the assembly dimensions have been basically finalized, see Figure 4 The basic structure of the frame is that...

AI Technical Summary

Problems solved by technology

Since the size and assembly size of each part have been finalized, if the width of the frame is widened or the size of some parts is changed, it will lead to a large number of changes in the mold, which not only increases the investment in production costs, but also loses the bending beam. The small and exquisite characteristics of the car, how to solve this problem, has been perplexing the motorcycle manufacturing industry

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