CN-121973874-A - Standardized type selection method for partition block structure

CN121973874ACN 121973874 ACN121973874 ACN 121973874ACN-121973874-A

Abstract

The invention relates to the field of automobile manufacturing and discloses a standardized model selection method of a partition block structure, which comprises the following steps of dividing each automobile body cavity into a key area, a sealing area and a sound absorption area according to the performance contribution of the whole automobile, and measuring and determining the maximum clearance of each automobile body cavity; the invention can improve the production design efficiency of the vehicle, reduce the production period of the vehicle, improve the multiplexing rate of the partition block structure, improve the design of the partition block structure, and avoid the problems of unstable sealing and waterproofing performance of the vehicle cavity and easy damage of the vehicle cavity caused by improper selection of the partition block.

Inventors

Tan Yinlang
ZHU DENGHONG
WU WENQIANG
WEI CHUNPING
LIU JIN

Assignees

上汽通用五菱汽车股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251229

Claims (10)

1. The standardized partition block structure model selection method is characterized by comprising the following steps of: s1, dividing each vehicle body cavity into a key area, a sealing area and a sound absorption area according to the performance contribution of the whole vehicle, and measuring and determining the maximum clearance of each vehicle body cavity; s2, constructing a candidate scheme pool comprising a sealing filler structure, a traditional separation block structure and a standard separation block structure; S3, determining a selection scheme of the separation block from the candidate structural scheme pool based on the performance partition of the vehicle body cavity and the maximum gap of the vehicle body cavity; if the cavity of the vehicle body is a key area, a traditional separation block structure is selected; If the vehicle body cavity is a sealing area or a sound absorption area, judging whether the maximum gap of the vehicle body cavity is not greater than a gap preset value, and if the maximum gap of the vehicle body cavity is not greater than the gap preset value, selecting a sealing filler structure; If the maximum clearance of the vehicle body cavity is larger than the preset clearance value, judging whether the shape of the vehicle body cavity is regular, if the shape of the vehicle body cavity is regular, selecting a standard separation block structure, and if the shape of the vehicle body cavity is irregular, selecting a traditional separation block structure; the maximum clearance of the vehicle body cavity refers to the maximum normal distance between two sheet metal parts at the mounting surface of the partition block in the vehicle body cavity.
2. The standardized selection method of the partition block structure according to claim 1, wherein in the step S1, when the contribution amount of the vehicle body cavity to the air tightness of the whole vehicle is not less than a first air tightness value or the risk coefficient of waterproof failure is not less than a first waterproof value, the vehicle body cavity is judged to be a key area; when the contribution amount of the vehicle body cavity to the air tightness of the whole vehicle is smaller than the first air tightness value and larger than the second air tightness value, or the risk coefficient of waterproof failure is smaller than the first waterproof value and larger than the second waterproof value, judging that the vehicle body cavity is a sealing area; And when the acoustic contribution amount of the vehicle body cavity to the first acoustic contribution amount is not smaller than the first airtight value, the airtight contribution amount of the whole vehicle is smaller than the second airtight value, and the waterproof failure risk coefficient is smaller than the second waterproof value, judging that the vehicle body cavity is a sound absorption area.
3. The standardized selection method for the partition block structure according to claim 2, defining a contribution amount of the vehicle body cavity to the air tightness of the whole vehicle as alpha, a waterproof failure risk coefficient of the vehicle body cavity as beta, and an acoustic contribution amount of the vehicle body cavity as gamma, and is characterized by comprising the following steps: S11, acquiring alpha, beta and gamma values of a target vehicle body cavity; S12, substituting alpha, beta and gamma values into To calculate and acquire an S value; S13, judging whether the S is not smaller than a first preset score, if so, judging the vehicle body cavity as a key area, if so, judging whether the S is not smaller than a second preset score, if so, judging the vehicle body cavity as a sealing area, and if so, judging the vehicle body cavity as a sound absorption area; wherein W α 、W β 、W γ is the weight of the air tightness contribution, the weight of the waterproof failure risk coefficient, and the weight of the acoustic contribution, respectively.
4. A method for standardized selection of a partition block structure according to claim 3, comprising the steps of: and S14, triggering an expert review program when S is smaller than a first preset score and alpha is not smaller than a first airtight value or beta is not smaller than a first waterproof value, and preferentially setting a high risk index to judge that the vehicle body cavity is a key area.
5. A method for standardized selection of a partition block structure according to claim 3, comprising the steps of: S15, testing original air tightness leakage quantity Q 0 of the whole vehicle, plugging a target vehicle body cavity area, testing air tightness leakage quantity Q 1 again, and passing through the formula: and calculating and obtaining the contribution quantity alpha of the target vehicle body cavity to the whole vehicle air tightness.
6. A method for standardized selection of a partition block structure according to claim 3, comprising the steps of: S16, testing the water leakage frequency ratio of the target vehicle body cavity in the multiple rain tests to obtain the water leakage probability P of the target vehicle body cavity, wherein the water leakage probability P is calculated according to the formula: calculating and obtaining a waterproof failure risk coefficient beta of a target vehicle body cavity; Wherein W is the damage level of water leakage to the vehicle body.
7. A method for standardized selection of a partition block structure according to claim 3, comprising the steps of: S17, in a semi-anechoic chamber, respectively testing an original noise value gamma 0 of the whole vehicle in a non-partition state of a target vehicle body cavity and a blocking noise value gamma 1 of the whole vehicle in a blocking state of the target vehicle body cavity, and then according to the formula: and calculating and acquiring the acoustic contribution quantity gamma of the target vehicle body cavity.
8. The method for standardized selection of a block structure of claim 1 wherein the sealing filler structure comprises an ethylene propylene diene monomer foam layer and a butadiene rubber adhesive layer.
9. The method of claim 1, wherein the conventional separator block structure comprises an ethylene vinyl acetate copolymer layer and a latticed polyamide 66 backbone.
10. The method of claim 1, wherein the standard block structure comprises an ethylene vinyl acetate copolymer layer and a rectangular frame polyamide 66 backbone, and the aspect ratio of the standard block structure is less than 3:1.

Description

Standardized type selection method for partition block structure Technical Field The invention relates to the field of automobile manufacturing, in particular to a standardized type selection method for a partition block structure. Background In the automotive manufacturing industry, it is necessary to install a partition block in an internal cavity of an automotive body frame to achieve the effects of sealing, waterproofing, soundproofing, and the like, thereby improving the overall quality of the vehicle. The selection of the partition blocks is often different according to different vehicle body cavity position states and different requirements. However, in the existing production process, the selection of the cavity separation blocks of the automobile body often depends on the experience of engineers, and a standardized selection method is lacking, so that different engineers often have large differences in the selection of the separation blocks of the same automobile type, the selection of the separation blocks is limited by the experience of engineers in the actual production and manufacturing process, the problems of poor selection adaptability and high sealing failure risk are caused, the reuse rate of the separation blocks in different automobile types is low, the separation blocks are required to be redesigned and selected for different automobile types, the design cost and the manufacturing cost are high, and the development efficiency of the automobile types is seriously influenced. Disclosure of Invention The invention aims to solve the technical problems that how to better select a partition block to improve vehicle type development efficiency and reduce the risk of vehicle sealing failure, and provides a standardized partition block structure type selection method which comprises the following steps: s1, dividing each vehicle body cavity into a key area, a sealing area and a sound absorption area according to the performance contribution of the whole vehicle, and measuring and determining the maximum clearance of each vehicle body cavity; s2, constructing a candidate scheme pool comprising a sealing filler structure, a traditional separation block structure and a standard separation block structure; S3, determining the most preferable scheme of the partition block from the candidate structural scheme pool based on the performance partition of the vehicle body cavity and the maximum gap of the vehicle body cavity; if the cavity of the vehicle body is a key area, a traditional separation block structure is selected; If the vehicle body cavity is a sealing area or a sound absorption area, judging whether the maximum gap of the vehicle body cavity is not greater than a gap preset value, and if the maximum gap of the vehicle body cavity is not greater than the gap preset value, selecting a sealing filler structure; If the maximum clearance of the vehicle body cavity is larger than the preset clearance value, judging whether the shape of the vehicle body cavity is regular, if the shape of the vehicle body cavity is regular, selecting a standard separation block structure, and if the shape of the vehicle body cavity is irregular, selecting a traditional separation block structure; the maximum clearance of the vehicle body cavity refers to the maximum normal distance between two sheet metal parts at the mounting surface of the partition block in the vehicle body cavity. Preferably, in step S1, when the contribution amount of the vehicle body cavity to the air tightness of the whole vehicle is not less than a first air tightness value or the risk coefficient of waterproof failure is not less than a first waterproof value, the vehicle body cavity is judged to be a critical area; when the contribution amount of the vehicle body cavity to the air tightness of the whole vehicle is smaller than the first air tightness value and larger than the second air tightness value, or the risk coefficient of waterproof failure is smaller than the first waterproof value and larger than the second waterproof value, judging that the vehicle body cavity is a sealing area; And when the acoustic contribution amount of the vehicle body cavity to the first acoustic contribution amount is not smaller than the first airtight value, the airtight contribution amount of the whole vehicle is smaller than the second airtight value, and the waterproof failure risk coefficient is smaller than the second waterproof value, judging that the vehicle body cavity is a sound absorption area. Preferably, defining the air tightness contribution quantity of the vehicle body cavity to the whole vehicle as alpha, the waterproof failure risk coefficient of the vehicle body cavity as beta and the acoustic contribution quantity of the vehicle body cavity as gamma, and comprising the following steps of: S11, acquiring alpha, beta and gamma values of a target vehicle body cavity; S12, substituting alpha, beta and gamma values into To calculate and ac