Angle measuring device for hinged position of travel trailer

Abstract

The invention provides an angle measuring device for a hinged position of a travel trailer. The angle measuring device comprises a sleeve, a hook, a revolving-speed sensor, a bearing gear, a linear displacement sensor and a rotating column. Mechanical measuring devices are installed on the sleeve of a limo and the hook of a tractor. When a horizontal hinged angle is produced at the hinged positionbetween the tractor and the limo, the sleeve drives the rotating column to rotate horizontally, the rotating column drives the bearing gear to rotate through a rotating column sleeve, and the revolving-speed of the bearing gear is measured through the revolving-speed sensor, so that rotation angle in the horizontal direction is judged. When a pitch angle is produced between the tractor and the limo, the rotating column and a sliding piece connected with the rotating column move longitudinally along a guide rail, the linear displacement sensor measures the longitudinal movement displacement ofthe rotating column to measure the produced pitch angle. The angle measuring device is stable and reliable, the pitch angle can be measured while the hinged angle is measured, and the omnibearing angle measurement at the hinged position can be realized.

Description

technical field [0001] The invention belongs to the field of angle measurement research, and in particular relates to a device for measuring the angle of a trailer type caravan hinge. Background technique [0002] The hinge angle and pitch angle of the trailer-mounted caravan have a great influence on the stability and ride comfort of the trailer-type caravan. Knowing the articulation angle, you can distribute the braking force of the RV during braking to improve the stability of braking. Knowing the pitch angle, you can adjust the active suspension of the RV to obtain better ride comfort. Since the trailer-type caravan uses ball studs at the hinge, the tractor and the caravan will also rotate longitudinally when they rotate horizontally. If the contact angle sensor is directly installed, the pitching motion of the front tractor and the caravan will interfere with the angle sensor, which gives Installing the angle sensor directly at the hinge to measure the angle brings dif...

AI Technical Summary

Problems solved by technology

Since the trailer-type caravan uses ball studs at the hinge, the tractor and the caravan will also rotate longitudinally when they rotate horizontally. If the contact angle sensor is directly installed, the pitching motion of the front tractor and the caravan will interfere with the angle sensor, which gives It is difficult to measure the angle by directly installing the angle sensor at the joint

Some existing angle measurement devices, as described in patent application number 201410054273.4, use stators, rotors, rotating shafts, code discs, pendulum mass bodies, etc. to measure angles. The structure is complex, the cost is high, and it is inconvenient to install on the trailer-type RV ball. head pin hinge

Also as described in the patent application number 201710681877.5, the angle displacement measurement mechanism and encoder are used, and the measurement accuracy is high, but the structure is complicated and the interference with the measurement device when the pitch angle of the towed RV tractor and the RV cannot be ruled out

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