Tire dynamic balancing testing machine

Abstract

A tire dynamic balancing testing machine comprises a tire conveying device, a lubricating device, a weighing device, a testing device, a marking device and a classification output device which are arranged in sequence. The lubricating device saves materials, is uniform in lubrication and good in lubrication effect, and avoids possibility of tire deformation. An upper spindle locking device is simple in structure, low in cost and accurate in positioning, enables spindles to keep aligned, and ensures accuracy of measurement results and clamping effect. A lower spindle locking device can adjust unlocking or locking state and is easy to adjust. A spindle rotary device ensures smoothness of rotation of the spindles and improves rotation accuracy. A tire carrying device avoids friction between a tire carrying mechanism and sidewalls of tires and is good in compatibility. The marking device is simple in structure. A tire transport device can accurately control output positions, enables the tires to be accurately positioned in each station, and ensures test accuracy of each station. The tires are picked up by a tire pick-up device so that central positions of the tires are fixed, and the tires are conveyed smoothly.

Description

technical field [0001] The invention relates to testing equipment, in particular to a testing machine for tire dynamic balance detection. Background technique [0002] Due to material and manufacturing reasons, automobile tires have more or less uneven mass distribution, and the center of mass does not coincide with the geometric center of the tire. When the tire has mass eccentricity, it will produce alternating radial Force, cause vehicle vibration, generate noise, affect stability, and cause traffic accidents in severe cases, so tires must be dynamically balanced before use. [0003] Currently used dynamic balance testing equipment and lubricating devices mainly use mechanical arms to position the tires. The structure is complicated, and the force control is difficult, and the centering adjustment is difficult. The contact pressure with the tire is high, which easily deforms the soft tire and damages the tire. Due to the original shape, the lubricating mechanism is soake...

AI Technical Summary

Problems solved by technology

[0002] Due to material and manufacturing reasons, automobile tires have more or less uneven mass distribution, and the center of mass does not coincide with the geometric center of the tire. When the tire has mass eccentricity, it will produce alternating radial Force, cause vehicle vibration, generate noise, affect stability, and cause traffic accidents in severe cases, so tires must be dynamically balanced before use

[0003] Currently used dynamic balance testing equipment and lubricating devices mainly use mechanical arms to position the tires. The structure is complicated, and the force control is difficult, and the centering adjustment is difficult. The contact pressure with the tire is high, which easily deforms the soft tire and damages the tire. Due to the original shape, the lubricating mechanism is soaked in the lubricating fluid, which consumes a lot of lubricating fluid. The main locking method of the upper spindle locking device is that the air claw drives the three locking blocks to tighten, and the pin positioning structure brings Wear and bending affect the roundness of the clamping of the three lock blocks, resulting in eccentric clamping and misalignment of the shafts. The main locking methods of the lower spindle locking device are steel ball locking and air claw locking. Steel ball locking The steel ball of the tightening device is connected with the lower spindle through air, and the structure is complex. Since the steel ball is in point contact with the lower spindle, the steel ball is prone to wear and the locking effect becomes poor. The air claw lock uses the air claw to tighten the lower spindle. , the locking effect is better, but the air claw is fixedly installed inside the testing machine, which is inconvenient to install and difficult to adjust. The friction on the table will cause the test position to shift, which will affect the test results. In severe cases, the tires will be worn, and the size of the table is fixed. The size of the tires that can be accommodated is limited and the compatibility is poor.

[0004] The previous patent No. "Automatic Load Tire Dynamic and Static Balance / Runout Tester" patent No. ZL200620026711.7 designed a tire dynamic balance test machine, although it can realize the automation of each process of tire dynamic balance test, it has complete functions and automation The degree is high, but there are still many defects. Using the cylinder to push the lock block to lock the lower spindle, the locking stability is poor, and the center of the spindle is easy to shift, which makes the dynamic balance test result inaccurate. The spindle is driven by the wedge belt, and the wedge belt is easy to loosen. The main shaft is susceptible to shear force, but the adjustment of the shear force is difficult and cannot be eradicated, which affects the rotation balance of the main shaft and affects the working accuracy. The tires are transmitted between each station through the roller table. The positioning of the roller table is not accurate. The structure is too complicated for centering with the arms folded. The printing device is equipped with a rotating mechanism. The structure is complicated and the angle adjustment is troublesome.

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