Dynamic fatigue testing machine for bicycle front fork

Abstract

The invention relates to a dynamic fatigue testing machine for a bicycle front fork. The testing machine is characterized by comprising a machine body, a cylinder, a displacement transducer, a force transducer, a connecting rod, a pseudo front shaft, a clamp, a mounting base and a support; the support is arranged on the machine body, the mounting base is arranged on one side of the support by a guide rail pair, a threaded hole is arranged at the matching position of the mounting base and the support, a lifting screw is matched with the threaded hole, and the top end of the lifting screw extends out of the upper end of the support and is equipped with a lifting handwheel, and the clamp is fixed on the mounting base; the machine body is also provided with the cylinder, a piston rod of the cylinder is arranged upwards, the top end of the cylinder is connected with the connecting rod, the pseudo front shaft is arranged at the top end of the connecting rod, and the piston rod of the cylinder is also provided with the displacement transducer and the force transducer. The testing machine has simple structure and convenient test, and can realize the accurate fatigue strength detection of the bicycle front fork. The testing machine can also realize multi-directional detection, automatic control, analysis and loading, which ensures good quality of produced fittings and guarantees the personal safety of bicycle riders.

Description

technical field [0001] The invention relates to a bicycle accessory detection device, in particular to a bicycle front fork dynamic fatigue testing machine, which belongs to the technical field of detection devices. Background technique [0002] Bicycles are very popular because of their environmental protection, convenience, low price and other characteristics. Especially in China with a large population, bicycles are very popular. Everyone from children to the elderly can basically ride a bicycle. [0003] When riding a bicycle, the rider sits on the cushion, holds the handlebars with both hands, steps on the pedals with both feet, uses the crank to drive the sprocket to rotate, and drives the rear wheel to rotate through the chain to achieve the purpose of moving forward. On urban and rural roads, some road sections are more bumpy, and the total weight of the cyclist and the bicycle is larger, so the bicycle will be more bumpy. The bumps are transmitted to the handleba...

AI Technical Summary

Problems solved by technology

The bumps are transmitted to the handlebars through the wheels and front forks, and at the same time are transmitted to the handlebars and seat cushions through the rear wheels and frame, which makes the rider feel uncomfortable, but also produces shock and vibration to the front fork and other components, which is easy to damage the components

Moreover, the force state of the front fork is more complex and changeable, including longitudinal, transverse and horizontal forces; at the same time, some front forks now use shock-absorbing forks, which generally form an angle of 20° with the ground after installation. Therefore, the force received is also inclined

In order to ensure the quality of the factory parts is good, the front fork needs to be inspected before leaving the factory. However, there is currently no inspection device that can inspect the quality of the front fork. Generally, it can only be judged according to the experience of the workers, or through visual inspection. Missing inspection accidents are prone to occur, resulting in the delivery of front forks with quality problems, which brings safety hazards to riders

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