Tube sheet combined motorcycle frame structure

Abstract

A tube sheet combined motorcycle frame structure comprises a tail bracket, a main support and a motorcycle head tube, wherein the main support comprises two supporting plates and two main beam tubes; each supporting plate comprises inner and outer side plates which are molded through compression and provided with turn-back edges; the turn-back edges of the inner and outer side plates are stitch-welded with each other to form the supporting plate of the hollow structure; the front end of each main beam tube is welded with the motorcycle head tube; the rear end of each main beam tube is inserted into the inner space of each supporting plate and welded with the supporting plate; an upper mounting plate and the two ends of a lower engine suspension tube are welded with the inner side plate of each supporting plate respectively; the two ends of an upper engine suspension tube penetrate through the inner and outer side plates of the supporting plates and the main beam tubes respectively, and welded with the inner and outer side plates and the main beam tubes respectively; the two ends of a rear motorcycle body bearing transverse tube penetrate through the inner and outer side plates of the supporting plates respectively, and welded with the inner and outer side plates; two rear diagonal bracing tubes are welded on the rear motorcycle body bearing transverse tube; and the upper ends of the two rear diagonal bracing tubes are respectively welded and fixed with two longitudinal tail bracket tubes of the tail bracket. The tube sheet combined motorcycle frame structure is simple in structure and process, and has the characteristics of high strength and low vibration.

Description

technical field [0001] The invention relates to a motorcycle frame, in particular to a tube plate combined motorcycle frame structure. Background technique [0002] The frame is the skeleton of the motorcycle, which is used to support the engine, transmission system, saddle, fuel tank and motorcycle rider, and provide the installation position for the wheels, so that the entire vehicle is supported on the wheels. Since the motorcycle frame is the main supporting part of the motorcycle, and it is also subject to shock and vibration during the running of the motorcycle, its material and structure must have considerable strength and rigidity, and at the same time require light weight to facilitate high-speed driving . The traditional motorcycle frame structure usually adopts a plate frame with simple structure, simple process and light weight. This plate frame is welded by two sets of symmetrical steel stamping parts, and there is no lower beam tube. The frame can also be used...

AI Technical Summary

Problems solved by technology

However, the disadvantages of this frame are: 1. The lack of rigidity of the frame will easily lead to deterioration of the maneuverability and safety of the motorcycle during driving, affecting normal driving; 2. The poor design structure and welding process of the frame will lead to During the driving process of the motorcycle, the vibration of the whole vehicle is large and the riding comfort is poor; 3. Because the overall strength and rigidity of the frame cannot be effectively guaranteed and the welding is poor, stress concentration is easily generated, and the frame is broken and damaged due to fatigue damage. , reduce the riding safety of the whole vehicle; 4. It is inconvenient to maintain, and due to the limitation of the stability of the plate, the strength and stiffness are not very ideal, so it is only suitable for motorcycles with small engine power

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