Automotive follow-up mileage measuring device

Abstract

The invention relates to an automotive follow-up mileage measuring device. The automotive follow-up mileage measuring device comprises a measuring wheel, a wheel arm, a wheel arm bracket and a measuring wheel mounting seat, wherein the measuring wheel can be in contact with a ground surface and is rotationally mounted at a connecting shaft of the wheel arm, an encoder is fixed on the connecting shaft, a shaft hole is formed in the other end of the wheel arm and rotationally sleeves a wheel arm rotating shaft of the wheel arm bracket, the upper end of the wheel arm bracket is fixed at the lower end of a wheel arm steering shaft, and the wheel arm steering shaft runs through a wheel arm steering shaft seat and is locked in the wheel arm steering shaft seat. According to the automotive follow-up mileage measuring device, a measuring wheel follow-up steering device is additionally mounted based on an independent measuring wheel device, so that the measuring wheel can follow a road detection vehicle to freely steer and can achieve an automatic lifting function and a maximal corner elasticity limiting function when the road detection vehicle turns suddenly or turns rapidly; meanwhile, by virtue of the maximal corner elasticity limiting function of the measuring wheel, the impact caused by the follow-up measuring wheel to a mounting structure under a large centrifugal force when the road detection vehicle turns rapidly is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle measurement, in particular to a vehicle mileage follow-up measurement device. Background technique [0002] In existing road inspection vehicles, mileage measuring devices are basically required. There are mainly two types of measuring devices in the prior art: [0003] (1) The encoder is connected to the non-steering axle wheel of the vehicle by a coupling, and the encoder directly collects the rotation information of the non-steering wheel, and the traveling distance of the vehicle can be obtained by calculating the circumference of the wheel. [0004] (2) An independent directional measuring wheel is installed on the chassis of the road inspection vehicle, the rotation information of the directional wheel is collected through an encoder, and the traveling distance of the vehicle can be obtained by calculating the circumference of the independent directional wheel. [0005] In the above two com...

AI Technical Summary

Problems solved by technology

[0005] In the above two commonly used structures, there are relatively large defects. The first method uses the encoder to directly collect the measurement method of the non-steering axle wheel rotation information of the road inspection vehicle. Although this structure is relatively simple, the measurement accuracy is limited. The detection of the use status of the whole vehicle has a great influence, such as changes in axle loads, changes in tire pressure, tire wear, etc. During the detection process, stable and high-precision measurement results cannot be provided, resulting in low information accuracy and cannot meet higher requirements. The second method is to install an independent directional measurement wheel on the chassis of the road inspection vehicle, and collect the measurement method of the rotation information of the directional wheel through an encoder. This method is used more and more, although this method can be used to a certain extent. Avoid the defects of the first method and submit the measurement results with stable accuracy, but because the measurement wheel cannot turn, so when the road inspection vehicle turns on the road in this way, the measurement wheel can jump up and down due to the uneven road surface, but when When the vehicle is turning, the measuring wheel cannot follow the steering and can only slide sideways, resulting in serious tire wear during the movement, which seriously reduces the service life of the measuring wheel and increases the safety hazard of the entire vehicle

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