Quick action coupling technology in full-automatic quick coupling device: a review

The development status of quick action coupling technology and the research work of automatic docking of quick action coupling were reviewed. Firstly, the importance was stated that the quick action coupling technology should be applied to the automatic quick hitch coupling device in the rescue robot wrist; the existing quick action couplings were presented. Secondly, aiming at the two quick action couplings, including ISO7241 and ISO16028, the structural forms and their pros and cons were investigated, analyzed and evaluated to provide a technical reference for final selection of ISO16028 quick action coupling made in China. Thirdly, the key problem was analyzed and discussed of changing the ISO16028 from manual docking to automatic docking; the unfeasibility of current solution ways was explained. A more convenient solution was proposed: a monolithic three-in-one mounting rack integrating two Huosai-Shuangzuoyong-Gang hydraulic cylinders with buffer structure, internal hydraulic pipelines, and installation holes for quick action couplings. It was illustrated that the proposed solution is practical and feasible in the following three conditions: the absence of exceeding a cost budget, without specially design of the inner/outer structure of the ISO16028 quick action coupling or that manufacturers do not customize such a product. This convenient solution is not the most secure and reliable way, therefore, it must be highly valued in the follow-up examination and verification.