Method for determining load spectrum of auxiliary frame of mixing transport truck

A technology of mixer truck and load spectrum, applied in the field of load spectrum research, can solve research and other problems, and achieve the effect of simple operation of instruments and equipment and clear test steps

Active Publication Date: 2013-09-11
宿迁永泰邦辰知识产权运营管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the fields of aviation, automobiles, etc., the research on load spectrum has achieved certain results. In the field of aviation, the idea of ​​"fly-continue-fly" random fatigue load spectrum compilation has been proposed, as well as the fatigue load spectrum of aircraft landing gear; In the field of automobiles, someone compiled the bending-torsion composite load spectrum for the cutter shaft of the

Method used

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  • Method for determining load spectrum of auxiliary frame of mixing transport truck
  • Method for determining load spectrum of auxiliary frame of mixing transport truck
  • Method for determining load spectrum of auxiliary frame of mixing transport truck

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1: The sub-frame of a mixer truck is taken as an example for illustration.

[0038] 1. Load spectrum test of sub-frame of mixer truck

[0039] (1) Prepare instruments and equipment: the main instruments and equipment are as follows: eDAQ data collector (number of channels: 67, such as figure 2 shown), three-way acceleration sensor (capacitive, range: 4g), non-contact five-wheel instrument, strain gauge (one-way, rosette), data processing software (Somat InField, nCode8.0), computer, test vehicle (full load, such as image 3 shown) etc.

[0040] (2) Determination of measuring points: According to the actual structural finite element analysis results and the fatigue damage location in use, actually determine the left and right measuring points, a total of 37 points, including 21 points for one-way measuring points and 16 points for three-way measuring points ,Such as Figure 4 As shown, the three-way acceleration of the center of mass of the vehicle and th...

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Abstract

The invention discloses a method for determining a load spectrum of an auxiliary frame of a mixing transport truck. The method includes the steps that firstly, according to finite element analysis and a fatigue damage position of the auxiliary frame of the mixing transport truck in the actual use, a detecting position is determined, and static and road tests are carried out on the load spectrum; secondly, by combining speed and acceleration signals, power spectrum analysis and filtering processing are carried out on time domain data, singular points and the null shift are detected out and removed, and complete and reliable test data are obtained; thirdly, according to the actual working conditions of the mixing transport truck, combined work conditions of 'rapid feeding, full load transportation and rapid discharging' are adopted, and the load spectrum containing a set of feeding work condition data, one set of road test data (containing three road conditions) and one set of discharging work condition data is determined by combining the actual road test data. The method is simple, accurate and practical when used for testing and compiling the load spectrum of the auxiliary frame of the mixing transport truck, and provides a way and a data foundation for forecasting the fatigue life.

Description

technical field [0001] The invention relates to the field of load spectrum research, in particular to an analysis method for determining the load spectrum of the auxiliary frame of a mixer truck. Background technique [0002] With the acceleration of my country's urbanization process, cement concrete mixer trucks are widely used, and the demand is increasing day by day; in order to improve work efficiency, mixer trucks continue to be large-scale, and their rated loading capacity continues to increase. The cement mixer truck mainly transports concrete from the mixing station to the construction site safely, reliably and efficiently, and has the dual functions of transportation and stirring. Its sub-frame plays the role of connecting the chassis girder and supporting the mixing drum. It is mainly composed of the main beam, the front desk, the back plane and the rear wing. To balance the dynamic load, it must have sufficient strength, rigidity and durability. In actual use, i...

Claims

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Application Information

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IPC IPC(8): G01M17/007
Inventor 孙丽刘永臣
Owner 宿迁永泰邦辰知识产权运营管理有限公司
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