Truck cab rotational inertia measurement assembly based on auxiliary clamp

Abstract

The invention discloses a truck cab rotational inertia measurement assembly based on an auxiliary clamp. The truck cab rotational inertia measurement assembly comprises a chassis, two ends of a frontside cross beam and two ends of a rear side cross beam of the chassis extend outwards to form lengthened beams respectively, and the tail ends of the lengthened beams are fixedly connected with the middles of a left side cross beam and a right side cross beam of the chassis respectively; vertical upward supporting beams are arranged at the two ends of the cross beams on the front side and the rearside of the chassis correspondingly. The tops of the supporting beams on the front side and the rear side are connected into a whole through a front connecting beam and a rear connecting beam correspondingly. Horizontal outward cross beams are arranged in the middle of the supporting beams on the cross beams on the front side and the rear side of the chassis respectively along the front side of the chassis, the ends of the two cross beams are connected into a whole through the other cross beam, and the end of each cross beam is further fixedly connected with the bottom of the corresponding supporting beam. The measurement assembly enables the measurement operation of the rotational inertia of the cab to be safe and is short in placement period and stable in overall hoisting and reduces the measurement error.

Description

technical field [0001] The invention relates to the technical field of testing the moment of inertia of a cab assembly of a truck, in particular to a measuring assembly for the moment of inertia of a cab assembly of a truck based on an auxiliary fixture. Background technique [0002] With the continuous development of the automobile industry, commercial vehicles are also updated in the continuous innovation of automobile technology. While the design of trucks should satisfy as many functions as possible, it is also required to improve the vibration comfort of drivers and passengers. The quality of the cab, the position of the center of mass, the moment of inertia, and the product of inertia are important parameters describing the law of rigid body rotation, which play a very important role in the design of the truck cab suspension system. The accuracy of these parameters directly affects the vibration The accuracy of the analysis directly affects the ride comfort of the truc...

AI Technical Summary

Problems solved by technology

[0004] Due to the small measurement plane of the MPC-2000 moment of inertia measuring instrument and the large volume of the truck cab assembly, if it is placed directly, it will produce various deformations and contact with the base to affect the measurement. It is more difficult to directly determine the attitude angle when measuring the product of inertia, and the placement period is longer

The establishment of the coordinate system of the object to be measured usually adopts artificial coordinate measurement and the establishment of the coordinate system. When the distance between the reference point and the reference point is measured by the Taiwan Yichen articulated arm that comes with MPC-2000, due to artificial readings and rods Errors during mobile measurement will lead to a decrease in measurement accuracy and affect the final measurement result

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