Horizontal fixing device used for measuring automobile thrust line

Abstract

The invention discloses a horizontal fixing device used for measuring an automobile thrust line. The horizontal fixing device comprises two fixing clamps which are connected with coaxial tires at two sides of an automobile, and is characterized in that a measuring rod is connected between the two fixing clamps, each fixing clamp comprises a supporting rod, a tire front tread fixing portion, a tire back tread fixing portion and a measuring rod connecting portion, the tire front tread fixing portion is fixedly arranged at the front part of the supporting rod, the tire back tire fixing portion is slidably arranged at the back part of the supporting rod, the measuring rod connecting portion is arranged at the end part, which is close to the tire front tread fixing portion, of the supporting rod, and two ends of the measuring rod are connected with the measuring rod connecting portions on the two fixing clamps respectively. The horizontal fixing device determines the position of a tire according to the tire tread, so that an actual and accurate tire position reference is acquired, the structure is simple, the operation is convenient, requirements for the processing precision of the fixing device itself are low, the determined measurement reference is more accurately close to the actual position of the tire, the measurement accuracy of the automobile thrust line is improved, and accurate adjustment for an automobile thrust angle in a later period is facilitated.

Description

technical field [0001] The invention relates to a clamp for horizontal fixing, in particular to a horizontal fixing device for measuring thrust lines of automobiles, belonging to the technical field of automobiles. Background technique [0002] The thrust line is an imaginary line extending forward from the center of the rear axle of the car, and the direction of travel of the rear axle is jointly determined by the rear wheels on both sides of the car. The thrust angle is the angle between the longitudinal axis of the car in the top view plane and the thrust line , the thrust line deviates to the left relative to the longitudinal axis of the car is positive, and the deviation to the right is negative. If the rear wheels point to the front and the thrust line is consistent with the longitudinal axis of the car, the thrust angle is zero. At this time, the car When driving in a straight line, the rear-wheel drive car moves forward along the thrust line and the longitudinal axis...

AI Technical Summary

Problems solved by technology

[0002] The thrust line is an imaginary line extending forward from the center of the rear axle of the car, and the direction of travel of the rear axle is jointly determined by the rear wheels on both sides of the car. The thrust angle is the angle between the longitudinal axis of the car in the top view plane and the thrust line , the thrust line deviates to the left relative to the longitudinal axis of the car is positive, and the deviation to the right is negative. If the rear wheels point to the front and the thrust line is consistent with the longitudinal axis of the car, the thrust angle is zero. At this time, the car When driving in a straight line, the rear-wheel drive car moves forward along the thrust line and the longitudinal axis of the car, so zero thrust angle is ideal; if the rear wheels are not pointing straight ahead, the thrust line is inconsistent with the longitudinal axis of the car, and the thrust angle is not equal to zero. At this time, the rear-wheel-drive car moves forward along the thrust line, forming a certain angle with the longitudinal axis of the car. Driving in this state will cause accelerated tire wear or deviation, which will greatly increase the fuel consumption of the car, even when the car is fully loaded. A tire blowout occurs during the process, causing danger and causing economic losses

[0003] At present, domestic automobile factories and automobile repair centers are immature in measuring the thrust line of automobiles, and the accuracy of measuring the thrust line of automobiles is not high. The existing fixing method is to use a clamp to clamp on the wheel hub on the outer side of the car tire, and take the outer edge of the car wheel as the reference for measurement. Only the thrust line of the wheel hub is shown, not the real thrust line of the car based on the tire tread. The thrust line of the wheel hub is very different from the thrust line of the car, because it is the tire that is in contact with the ground instead of the wheel hub, which leads to the current situation. The vehicle thrust line data measured by technology is untrue and inaccurate

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