Narrow strip strain weighing sensor, narrow strip array dynamic scale and use method thereof

Abstract

The invention discloses a narrow strip strain weighing sensor. The sensor comprises a bearing beam, a plurality of pin shaft sensors and a base, wherein the pin shaft sensor is horizontally installedon the base, the bearing beam includes a horizontal plate and a vertical plate which are arranged in a T shape, the vertical plate is connected with the pin shaft sensor, the pin shaft sensor is perpendicular to the bearing beam, a counter bore is formed in the side wall of the pin shaft sensor, a bottom of the counter bore is a vertical plane, and a shear type strain gauge is arranged at the bottom of the counter bore. Measurement accuracy can be improved. The invention also discloses a narrow strip array dynamic scale and a use method thereof. The narrow strip array dynamic scale is integrally installed on the ground, a position error of each installed narrow strip weighing sensor can be reduced, a measurement error is decreased, and measurement accuracy is improved. In effective test time, vehicle wheels completely act on the upper plate, namely the weighing surface, so that a requirement on installation levelness of the vehicle dynamic scale and the road surface is far lower than that of a narrow quartz weighing sensor which is directly installed on the road surface, and installation cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of automobile weighing, in particular to a narrow strip strain load sensor, a narrow strip array dynamic balance and a use method thereof. Background technique [0002] The dynamic weighing sensor is mainly used to measure the axle weight and total weight of the vehicle during the driving process, and realize the automatic collection of vehicle weight data to support intelligent traffic management planning, automatic detection of overload and over-limit, and support road weight tolls and other functions. Of course, it can also be used for weighing other dynamic equipment. [0003] At present, the mainstream methods of vehicle dynamic weighing include indirect measurement methods represented by quartz narrow bar load cell arrays and direct measurement methods represented by flat-plate pneumatic dynamic scales and bent-plate automobile dynamic scales. [0004] The common mechanism of flat car dynamic balance ...

AI Technical Summary

Problems solved by technology

[0006] 2. It is difficult to achieve better stiffness while having a longer effective measurement time

[0011] 1. When in use, each narrow quartz dynamic weighing sensor is installed on the ground separately. When installing each narrow quartz dynamic weighing sensor, there is inevitably an installation error. The errors of multiple narrow quartz dynamic weighing sensors are superimposed, resulting in the final The accuracy of the measurement results is poor

[0012] 2. The shape of the shell is relatively regular. When the vehicle passes by, there are often lateral forces and partial loads, which cause a large bending deformation of the shell, which affects the measurement accuracy of the piezoelectric component.

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