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A study on the operation method of safety device of rotating quick coupler  

Song, Jong-Won (Department of Mechanical Engineering, Yuhan University)
Song, Chil-Sung (Woojung Machinery Industry)
Publication Information
Design & Manufacturing / v.15, no.1, 2021 , pp. 8-13 More about this Journal
Abstract
Excavators are construction machines used for digging soil, transporting soil, dismantling buildings and clearing the ground at construction sites. There are various attachments attached to the arm end of the excavator and used for various operations. There are the most common types of buckets attached for excavation and other types of attachments used for foresting, road cleaning, snow removal, and waste disposal. When multiple types of work are done at the same time, several attachments must be replaced and a device called a quick coupler is used to reduce replacement time. Although a quick coupler reduces the replacement time of the Attachment, it is necessary to attach safety devices to prevent unintentional detachment of attached attachments during the operation. To prevent the attachment from leaving or falling regardless of the operator's intention, support is installed in the hook of the bucket pin and controlled through a separate hydraulic cylinder to ensure safety. When attaching an attachment, it shall be attached without any action. This study is intended to verify the design validity of safety devices to prevent falls of attachments occurring at construction sites.
Keywords
Excavators; Attachment; Quick coupler; Bucket; Safety device; Hydraulic cylinder;
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  • Reference
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