Vehicle Load Measuring Displacement Sensors

Abstract

The invention discloses a vehicle load measurement displacement sensor. An elastic piece is independent from a limiting piece and arranged outside, one end of the elastic piece can be assembled with an axle or a frame, and the other end of the elastic piece is assembled with a moving piece. In the stable running process of a vehicle, due to the load bearing effect, the distance between the frame and the axle is shortened, at the moment the elastic piece can drive the moving piece to move, the elastic piece is not deformed, and then the sensor can measure the vehicle load weight; in the violent jolt process of the vehicle, due to the overshoot effect, the distance between the frame and the axle is rapidly shortened, the elastic piece can drive the moving piece to move and can be deformed, the buffer function is achieved through the deformation of the elastic piece, the allowable distance change amplitude between the frame and axle is increased, damage, caused by overshoot compression of the vehicle, to the sensor and an installing structure of the sensor is avoided, and the service life of a device is guaranteed.

Description

technical field [0001] The present application relates to the field of sensing technology, in particular to a vehicle load measuring displacement sensor. Background technique [0002] With the deepening of urban infrastructure, the logistics and transportation industry has also continued to flourish. The weighing of vehicle weight has become a core content in logistics transportation, which provides guarantee for traffic control and construction cost calculation. For example, when it is necessary to control the load of a truck to avoid overloading, the means used is to reflect the real-time load of the truck through weighing technology, and then compare the real-time load with the preset load threshold in the background of the system to judge Whether the truck is overloaded. In the calculation of construction costs, the payment is generally based on the number of times the dump truck transports garbage and soil, and whether the dump truck is fully loaded is related to the ...

AI Technical Summary

Problems solved by technology

These prior art all can carry out weighing to vehicle weight, but all there is a problem simultaneously: sensor body is installed on the vehicle axle of automobile by mounting structure, and the measuring head of sensor (as the column type changing pole of Chinese Patent Publication No. CN1804561A The load-bearing head in the distance-type capacitance load cell, the top cap in the freight car load monitoring device of CN1512143A) directly abuts with the vehicle frame of the car, because after the car is loaded, the distance between the vehicle frame and the axle changes, and the vehicle The frame will cause the measuring head to drive the moving parts of the sensor (such as the moving column in the column type variable pole pitch capacitance load cell of China Patent Publication No. CN1804561A, the moving sleeve in the truck load monitoring device of CN1512143A) to move, thereby generating Indicate the indicator signal of the vehicle load weight, in order to realize the reset of the moving parts, usually through an elastic member (such as the load-bearing spring in the column type variable pole distance type capacitance load cell of the Chinese patent publication number CN1804561A, the freight car load capacity of CN1512143A The spring in the monitoring device) is abutted against the moving part to achieve

[0004] However, there are at least the following technical problems in the prior art: in the process of moving the car, it is inevitable to encounter bumps and heavy loads. At this time, overshooting occurs between the vehicle frame and the axle, and the vehicle frame The distance between the vehicle axle and the vehicle axle is compressed sharply in a short time, and the sensor body is installed on the vehicle axle through the installation structure. Due to the setting of the internal elastic parts, the measuring head and the moving parts have a certain movement stroke. The above-mentioned situation of rapid compression will lead to The rigid sensor is squeezed and the installation structure is crushed, causing the installation structure to be deformed and scrapped. What is more serious is that the sensor itself will be damaged and cannot be used

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