Unlock instant, AI-driven research and patent intelligence for your innovation.

Connecting structure of vehicle body and auxiliary frame and model selection method of fastener of connecting structure

A connection structure and fastener technology, applied in the connection between the body and the frame, the substructure, the vehicle parts, etc., can solve the problems of inaccurate evaluation and inaccurate model selection methods of automobile collision disclosure.

Inactive Publication Date: 2021-03-02
SAIC MOTOR
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the selection method of this type of fastener is not accurate, and the subsequent evaluation of the public crash of the car is not accurate.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Connecting structure of vehicle body and auxiliary frame and model selection method of fastener of connecting structure
  • Connecting structure of vehicle body and auxiliary frame and model selection method of fastener of connecting structure
  • Connecting structure of vehicle body and auxiliary frame and model selection method of fastener of connecting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] For the connection structure between the subframe and the body under complex loads for a long time, the slippage between the connected parts is inevitable, and the attenuation of the clamping force caused by the slippage will in turn aggravate the slippage, resulting in the loosening of the bolts. It is not accurate to ensure the reliability of the connection structure through a certain safety factor, and considering the safety factor will make the structural design results uncertain, which often leads to the increase of fastener specifications and the problem of design space.

[0033] In order to solve this problem, the present invention provides a method for selecting fasteners, which are used in the connection structure between the vehicle body and the sub-frame. Choose a smaller size fastener for the same load, or choose a fastener that provides more preload for the same size.

[0034] In order to enable those skilled in the art to better understand the solution of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a connection structure of a vehicle body and an auxiliary frame and a model selection method of a fastener of the connection structure. The model selection method comprises thesteps of S1 determining initial parameters of the fastener, the initial parameters comprising an initial nominal diameter, a pretightening force recession amount, a material type, a bolt grade and atightening torque range; according to the initial parameters, calculating the critical sliding amount of the fastener without rotating loosening; S2 selecting a preset multiple of the critical slidingamount as a primary nominal diameter of the fastener, and determining a target nominal diameter of the fastener in combination with a reserved range of the fastener; and S3 determining a required fastener according to the target nominal diameter. According to the model selection method, model selection can be carried out on the fastener according to the loading condition of the auxiliary frame and the vehicle body, model selection is more accurate, the connecting performance of the connecting structure of the vehicle body and the auxiliary frame can be improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a connection structure of a vehicle body and a sub-frame and a method for selecting types of fasteners thereof. Background technique [0002] At present, the connection between the sub-frame and the vehicle body of an automobile generally adopts a hard connection method of fasteners such as bolts and nuts. Among them, the selection method for fasteners (such as bolts and nuts) is basically as follows: determine the working load, determine the basic specification parameters of the fastener according to the working load, and then determine the preload of the connecting structure (fastener and connected parts) Loss, determine the assembly load and tightening torque, calculate the meshing length, then check the strength, and finally perform simulation verification. [0003] Among them, when determining the assembly load and tightening torque, it is usually considered to set the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B62D24/00B62D21/09G06Q10/06
CPCB62D21/09B62D24/00G06Q10/06393
Inventor 娄臻亮周辰晓
Owner SAIC MOTOR