Compound four-connecting rod testing machine for mechanical properties of tire

Abstract

The invention relates to a compound four-connecting rod testing machine for the mechanical properties of a tire. The testing machine comprises an arc-shaped guide rail device, a compound four-connecting rod mechanism assembly, a vertical loading sliding plate part assembly, a six-component sensor and driving brake device assembly and a simulated road device, wherein the arc-shaped guide rail device consists of a substrate hydraulic cylinder and arc-shaped guide rails; the compound four-connecting rod mechanism assembly consists of a substrate, four connecting rods, a big swing rod mechanism and a small swing rod mechanism; the vertical loading sliding plate part assembly consists of a box body, guide rails, a sliding plate, a hydraulic cylinder, a hydraulic cylinder junction board and an upper transition board; and the six-component sensor and driving brake device assembly consists of a six-component sensor and a driving brake device. The compound four-connecting rod testing machine for the mechanical properties of the tire has a simple and reasonable structure and low price, is capable of realizing various operation conditions of the tire and is capable of accurately controlling the six degrees of freedom motion parameters of the tire and the relation between the six degrees of freedom motion parameters and the six components of the ground, and moreover, the trace center of tire is not changed under the compound operation conditions.

Description

technical field [0001] The invention relates to an indoor tire mechanical characteristic testing device, specifically a testing machine for realizing various tire operating conditions through a compound four-link and arc-shaped guide rail mechanism, which can simultaneously measure high-speed or low-speed operating conditions of tires The following mechanical properties. Background technique [0002] The mechanical characteristics of tires are the basis of automobile performance analysis and design, and have an important impact on the safety, handling stability, ride comfort and NVH performance of automobiles. The tire mechanical characteristic testing machine is one of the key test equipment for tire characteristic modeling and vehicle performance integration, adjustment and development. The relationship between the ground six-component force, which is the source of key data for vehicle dynamics simulation design. [0003] The trailer-type outdoor tire testing machine can...

AI Technical Summary

Problems solved by technology

[0003] The trailer-type outdoor tire testing machine can simulate the operation of tires in various road conditions, but due to the randomness of the outdoor environment and the influence of factors such as uneven road surfaces, the obtained test data is not accurate and has a large dispersion

The indoor tire testing machine eliminates the influence of the outdoor environment on the tire test data. In addition to simulating the relative movement between the road surface and the wheels, this kind of testing machine can usually realize tire side deflection and roll motion, but due to imperfect mechanism principles, it is common. The problem of the movement of the center of the tire footprint during the rolling and yaw motion causes the marginal effect of the roll motion coupling that cannot be eliminated, such as the widely used flat-belt high-speed tire mechanical characteristic testing machine produced by the American MTS company. , which makes it difficult to control the motion input parameters of the test tire, resulting in inaccurate test data

In addition, the current testing machine that can test the characteristics of tire composite working conditions has a complex structure, large size, and high cost

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