Front and rear axle abrasive experimental device for bicycle

Abstract

The invention discloses a wear-resistant testing machine for front and rear axles of a bicycle. The outer surfaces of two ends of a mounting sleeve are respectively fixed in the inner rings of two supporting bearings at intervals, and the outer rings of the two supporting bearings are respectively fixed in bearing seats, and the bearing seats are fixed on the supporting bearings. On the platform, the sprocket is fixed on the mounting sleeve, the first and second fixing sleeves and the adjusting washers in the clamping device are movably installed in the mounting sleeve, and one side of the first and second fixing sleeves are respectively sleeved on both ends of the hub and The faceplates on both sides of the hub can be pressed tightly, the other side of the first fixing sleeve is against one end of the installation sleeve, the adjusting washer is pressed against the other side of the second fixing sleeve, the locking device is fixed on the other end of the installation sleeve to press the adjustment washer, the motor power A transmission belt is arranged between the output device and the sprocket, and a load device is arranged on the support platform below the bearing seat, and the two ends of the bicycle shaft respectively exposed to the two ends of the installation sleeve bear the load of the load device in a balanced manner. This example has simple and reasonable structure, strong versatility, convenient operation and low overall product cost.

Description

technical field [0001] The invention relates to a wear-resistant detector for front and rear wheel bearings of a bicycle. Background technique [0002] At present, there are mainly two types of hub wear testing machines in the market, J25A-00 represented by Tianjin Bicycle Research Institute and a certain type of testing machine represented by Taiwan Junyan Precision Machinery. The main design principles are as follows: [0003] 1. Tianjin Bicycle Research Institute J25A-00, the left and right axis of the hub is fixed, and the load is loaded on the hub tube through rolling bearings (four rolling bearings are pressed on the tube). The hub driving method is to use the rear hub to spin the flywheel and drive the sprocket The rotation drives the flywheel to rotate, so that the hub also rotates; the front hub connects the rotating shaft and the spoke holes of the faceplate through pins, and when the rotating shaft rotates, it drives the faceplate to rotate. The disadvantage of t...

AI Technical Summary

Problems solved by technology

The disadvantage of this is that the active and driven three-jaw chucks will always have concentricity deviations (due to manufacturing, adjustment during clamping, wear, etc.), which will cause twisting forces on the hub axis.

Causes abnormal damage in hub wear test

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