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Big data detection method and system for bolt assembly of bulldozer torque-variable transmission device

A speed change device and detection method technology, applied in the direction of electrical digital data processing, design optimization/simulation, instruments, etc., can solve problems such as poor data accuracy, and achieve the effect of improving reliability and consistency

Active Publication Date: 2022-03-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the size of the bolt tightening torque directly determines the quality of the assembly. At present, the bolt torque is generally tightened with a pneumatic wrench and manually estimated. The accuracy of the data is poor, and the detection threshold is a fixed value.

Method used

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  • Big data detection method and system for bolt assembly of bulldozer torque-variable transmission device

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Experimental program
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Effect test

Embodiment 1

[0049] Such as figure 1 As shown, a large data detection method for bolt assembly of a bulldozer variable torque transmission device includes the following steps: using an electric tightening device capable of data transmission to collect bolt torque in real time, collecting bolt torque data through the Industrial Internet of Things, and building a parameter database. The distribution form of the bolt torque data set is determined by means of big data analysis.

[0050] First of all, the way to judge whether the bolt torque data set is normally distributed is: calculate the mean x and standard deviation σ of the sample data, and use it to calculate the quantile You can find t through the normal distribution table i The corresponding quantile Q i ’, using Q i -Q i 'Figure to identify sample data and judge Q i -Q i 'Whether the points on the graph conform to the straight line feature, and use the R test to test the linear correlation, and use R>0.95 as the threshold to de...

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Abstract

The invention discloses a large data detection method and system for bolt assembly of a bulldozer variable torque transmission device, comprising the following steps: collecting bolt torque in real time and constructing a parameter database; performing big data analysis on the database to determine the distribution form of the bolt torque database; according to the The distribution form, such as normal distribution, Weibull distribution or other distribution, is used for data processing to obtain the threshold range of bolt assembly torque; match the test parameters in the actual assembly process with the threshold range of bolt assembly torque, and judge the actual assembly process. Test parameters are qualified. This method can significantly improve the reliability and consistency of the bulldozer torque converter transmission device assembly.

Description

technical field [0001] The invention relates to the technical field of assembly process detection of a torque-variable transmission device of a bulldozer, in particular to a large-data detection method and system for bolt assembly of a bulldozer torque-variable transmission device. Background technique [0002] The statements in this section merely mention the background technology related to the present invention and do not necessarily constitute the prior art. [0003] In the process of realizing the present invention, the inventor finds that there are following technical problems in the prior art: [0004] The torque converter transmission device is an important part of the bulldozer. At present, domestic bulldozer manufacturing enterprises use many types of bulldozer assembly lines. On the assembly and sub-assembly assembly lines, most of them use flexible conveyor lines to transport the workpieces, and the assembly equipment assembles the torque transmission device. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/02
Inventor 闫伟孙俊伟徐傲李国祥曲春燕郑利楠
Owner SHANDONG UNIV