CN-122020492-A - Portal quality detection method and system

CN122020492ACN 122020492 ACN122020492 ACN 122020492ACN-122020492-A

Abstract

The invention provides a portal quality detection method and a portal quality detection system, which relate to the technical field of portal production, wherein the portal quality detection method comprises the steps of acquiring process link data of key components in the production process of a forklift portal, wherein the process link data comprise welding link data and assembling link data; the method comprises the steps of carrying out abnormal detection on link data of each procedure to obtain a link abnormal degree value, carrying out stability analysis of different use modes according to the link abnormal degree value and link weights corresponding to the link abnormal degree value to obtain a stability index, and determining the qualification of the quality of the portal frame according to the stability index to finish the quality detection of the portal frame. The detection method and the detection system provided by the invention can effectively improve the quality evaluation efficiency after the production of the portal frame, and ensure the reliability of the portal frame quality qualification detection result.

Inventors

WANG XIANG
CHEN JUN
XU XIAOLIANG
LI SU
WANG HAIBO
WANG RIXIN
YAN BAOYONG

Assignees

中机第一设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260414

Claims (10)

1. The portal quality detection method is characterized by comprising the following steps of: acquiring process link data of each key component in the forklift portal production process, wherein the process link data comprises welding link data and assembling link data; performing anomaly detection on each procedure link data to obtain a link anomaly degree value; Performing stability analysis of different use modes according to the link abnormality degree value and the link weight corresponding to the link abnormality degree value to obtain a stability index; and determining the qualification of the quality of the door frame according to the stability index so as to finish the quality detection of the door frame.
2. The portal quality inspection method of claim 1, wherein the welding link data includes weld bead widths and actual solder amounts corresponding to different welding positions; Performing anomaly detection on each procedure link data to obtain a link anomaly degree value, wherein the anomaly degree value comprises the following steps: finding out corresponding reference solder quantity according to the weld widths corresponding to different welding positions; Comparing the actual solder amounts corresponding to the different soldering positions with the corresponding reference solder amounts; When the actual solder quantity is smaller than the corresponding reference solder quantity, taking a welding subsection corresponding to the actual solder quantity smaller than the corresponding reference solder quantity as an abnormal subsection, and calculating a difference value between the reference solder quantity and the actual solder quantity to obtain a solder missing value of each position point in the abnormal subsection; According to the partition length of each abnormal partition, a corresponding abnormal scoring factor is called; And obtaining a first link abnormality degree value corresponding to each welding position according to the partition length of each abnormal partition, the abnormality scoring factor, the solder missing value and the welding total length corresponding to the welding position.
3. The portal quality detection method according to claim 2, wherein the calculation formula of the first link abnormality degree value is: ; Wherein, the Represents the degree of abnormality value of the first link, Representing the starting point in an abnormal partition To the point of the cut-off position Is defined by a partition length of (a) and (b), Indicating the actual amount of solder material, Indicating the amount of the reference solder material, Representing each abnormal partition The corresponding anomaly score factor is used to determine, Indicating the number of abnormal subsections corresponding to the weld locations.
4. The portal quality inspection method of claim 1, wherein the assembly link data includes fitting fastening data corresponding to different fastening positions and assembly fit data corresponding to different activity positions; Performing anomaly detection on each procedure link data to obtain a link anomaly degree value, wherein the anomaly degree value comprises the following steps: Obtaining a second link abnormality degree value corresponding to each fastening position group according to the fitting fastening data corresponding to different fastening positions and the fastening position group corresponding to the fastening position; and obtaining a third link abnormality degree value corresponding to each active position group according to the assembly adaptation data corresponding to different active positions and the active position groups corresponding to the active positions.
5. The mast quality inspection method of claim 4, wherein the fitting fastening data includes torque versus time curves of fastened fittings during tightening, fastening joint standards of the fastened fittings, and a first lubrication level for different fastening locations; Obtaining a second link abnormality degree value corresponding to each fastening position group according to the fitting fastening data corresponding to different fastening positions and the fastening position group corresponding to the fastening position, including: comparing the similarity between the torque and time curve and the reference torque and time curve corresponding to the corresponding fastening position to obtain a fastening abnormality degree value; obtaining a fastening abnormal correction value according to the fastening joint standard degree and the first lubrication degree corresponding to the fastening position; Carrying out fusion calculation on the fastening abnormality degree value and the fastening abnormality correction value to obtain a second link abnormality component corresponding to each fastening position; And obtaining the second link abnormality degree value corresponding to each fastening position group according to the fastening position group, the second link abnormality component corresponding to each fastening position in the fastening position group and the fastening position weight corresponding to each fastening position.
6. The portal quality detection method according to claim 5, wherein the calculation formula of the second link abnormality degree value is: ; Wherein, the Represents the degree of abnormality value of the second link, Represents the value of the degree of abnormal fastening, Represents the standard degree of the fastening joint, A first correction factor is indicated and is indicated, A first degree of lubrication is indicated and, A second correction factor is indicated and is indicated, Indicating the corresponding fastening abnormality correction value for each fastening position, Representing the weight of the fastening location corresponding to each fastening location.
7. The mast quality inspection method of claim 4, wherein the fitting adaptation data includes a movable reaction force versus time curve of a movable fitting in a corresponding movable stroke in each of the movable positions, a second lubricity of a movable node corresponding to the movable fitting, a clearance between fittings, and a parallelism between fittings; According to the assembly adaptation data corresponding to different activity positions and the activity position groups corresponding to the activity positions, obtaining a third link abnormality degree value corresponding to each activity position group, including: Comparing the similarity between the activity reaction force and time curve and the reference activity reaction force corresponding to the corresponding activity position and the time curve to obtain a first adaptation abnormality degree value; obtaining an adaptation abnormal correction value according to the second lubrication degree corresponding to the movable position; Obtaining a second adaptation abnormality degree value according to the clearance degree and the parallelism degree corresponding to the movable position; Carrying out fusion calculation on the adaptation abnormal degree value, the adaptation abnormal correction value and the second adaptation abnormal degree value to obtain a third link abnormal component corresponding to each activity position; and obtaining the third link abnormality degree value corresponding to each active position group according to the active position group, the third link abnormality component corresponding to each active position in the active position group and the active position weight corresponding to each active position.
8. The portal quality detection method according to claim 4, wherein the calculation formula of the third link abnormality degree value is: ; Wherein, the Represents the degree of abnormality value of the third link, Represents a first adaptation abnormality degree value, The degree of clearance is indicated as being indicative of the degree of clearance, A first abnormal increment is indicated and, The degree of parallelism is indicated as well, Representing a second abnormal increment of the number of the first abnormal increment, Represents a second adaptation abnormality degree value, A second degree of lubrication is indicated and, The correction factor is indicated as such, Indicating the corresponding adaptation anomaly correction value for each active position, Representing the activity position weight corresponding to each activity position.
9. The portal quality detection method according to claim 1, wherein performing stability analysis of different usage patterns according to the link abnormality degree value and the link weight corresponding to the link abnormality degree value to obtain a stability index includes: According to each using mode, a corresponding link comparison table is called; Outputting link key positions corresponding to the use modes based on a link comparison table, wherein the link key positions comprise welding positions, fastening position groups and movable position groups; Calculating to obtain the stability index according to a stability reference index, the link abnormality degree value corresponding to the link key position and the sub-weight corresponding to each link key position, wherein the link abnormality degree value comprises a first link abnormality degree value corresponding to each welding position, a second link abnormality degree value corresponding to each fastening position group and a third link abnormality degree value corresponding to each movable position group, and the sub-weight comprises a first sub-weight corresponding to the first link abnormality degree value, a second sub-weight corresponding to the second link abnormality degree value and a third sub-weight corresponding to the third link abnormality degree value; The calculation formula of the stability index is as follows: ; Wherein, the The stability index is indicated as such, Represented as a reference index of stability, Representing the first link abnormality degree value corresponding to each welding position, A first sub-weight is represented as, Representing the corresponding second link abnormality degree value of each fastening position, Representing the second weight of the sub-set, Representing the corresponding third link abnormality degree value of each active position, Representing a third sub-weight.
10. A gantry quality inspection system, comprising: The acquisition unit is used for acquiring process link data of each key component in the forklift portal production process, wherein the process link data comprise welding link data and assembling link data; The abnormality detection unit is used for carrying out abnormality detection on each procedure link data to obtain a link abnormality degree value; a stability analysis unit for performing stability analysis of different usage modes according to the link abnormality degree value and the link weight corresponding to the link abnormality degree value to obtain a stability index, and And the result output unit is used for determining the qualification of the quality of the portal according to the stability index so as to finish the quality detection of the portal.

Description

Portal quality detection method and system Technical Field The invention relates to the technical field of portal production, in particular to a portal quality detection method and a portal quality detection system. Background The core effect of fork truck portal is to support the lift goods, except structural design, the welding and the equipment effect of its structure can directly influence fork truck bearing capacity and stability. The forklift mast consists of an inner mast and an outer mast, and realizes a lifting function through a hydraulic system. In the existing portal production process, the produced portal is directly put into a forklift system for installation and use, and due to the fact that the abnormality of the portal in the welding and assembling processes is difficult to accurately identify, the reliability of the portal in the use process is greatly reduced, and then the safety risk in use is increased. Disclosure of Invention The invention provides a method and a system for detecting the quality of a portal, which are used for solving the technical problems that in the prior art, the portal after production is directly put into a forklift system for installation and use, and the reliability of the portal in the use process is greatly reduced due to the fact that the abnormality of the portal in the welding and assembling processes is difficult to be accurately identified, so that the safety risk in the use process is increased. In order to achieve the above and other related objects, the invention provides a method for detecting the quality of a portal, which comprises the steps of obtaining procedure link data of each key component in the production process of the portal of a forklift, wherein the procedure link data comprise welding link data and assembling link data, carrying out anomaly detection on each procedure link data to obtain a link anomaly degree value, carrying out stability analysis of different use modes according to the link anomaly degree value and link weights corresponding to the link anomaly degree value to obtain a stability index, and determining the qualification of the portal quality according to the stability index to finish the portal quality detection. In an embodiment of the invention, welding link data comprises weld widths corresponding to different welding positions and actual solder amounts, abnormal detection is carried out on the process link data to obtain link abnormal degree values, the process link data comprises the steps of finding corresponding reference solder amounts according to the weld widths corresponding to the different welding positions, comparing the actual solder amounts corresponding to the different welding positions with the corresponding reference solder amounts, taking a welding subsection corresponding to the actual solder amounts smaller than the corresponding reference solder amounts as an abnormal subsection when the actual solder amounts are smaller than the corresponding reference solder amounts, carrying out difference calculation on the reference solder amounts and the actual solder amounts to obtain solder missing values of all position points in the abnormal subsection, and according to the subsection length of each abnormal subsection, the corresponding abnormal scoring factors are called, and the first link abnormal degree values corresponding to each welding position are obtained according to the subsection length, the abnormal scoring factors, the solder missing values and the welding total length corresponding to the welding positions of each abnormal subsection. In an embodiment of the present invention, a calculation formula of the first link anomaly degree value is: Wherein, the method comprises the steps of, Represents the degree of abnormality value of the first link,Representing the starting point in an abnormal partitionTo the point of the cut-off positionIs defined by a partition length of (a) and (b),Indicating the actual amount of solder material,Indicating the amount of the reference solder material,Representing each abnormal partitionThe corresponding anomaly score factor is used to determine,Indicating the number of abnormal subsections corresponding to the weld locations. In an embodiment of the invention, the assembly link data comprises fitting fastening data corresponding to different fastening positions and assembly adapting data corresponding to different movable positions, and the abnormal detection is carried out on the link data of each procedure to obtain link abnormal degree values, wherein the method comprises the steps of obtaining second link abnormal degree values corresponding to each fastening position group according to the fitting fastening data corresponding to the different fastening positions and the fastening position groups corresponding to the fastening positions, and obtaining third link abnormal degree values corresponding to each movable position group according to the asse