Open caisson construction device

The utility model discloses an open caisson construction device, and relates to the field of foundation engineering. Comprising a well body and a mounting disc, the installation disc is located in the center of the well body and connected with the well body through an installation assembly with the adjustable length. The upper end of the driving shaft is arranged in the mounting disc in a sleeving manner; the driving motor is connected with the driving shaft; the blade is horizontally connected with the lower end of the driving shaft through the telescopic assembly; according to the utility model, the length-adjustable mounting assembly and the telescopic assembly are utilized to carry out telescopic adjustment, so that soil layers with different diameters can be cut, and then settlement construction can be carried out on well bodies with different diameters. 本实用新型公开了一种沉井施工装置，涉及基础工程领域；包括井体、安装盘，井体下端设有刃脚；安装盘位于井体中心且安装盘与井体之间由可调节长度的安装组件连接；还包括驱动轴，驱动轴上端套设在安装盘内；还包括连接驱动轴的驱动电机；还包括伸缩组件、刀片，刀片通过伸缩组件与驱动轴下端水平连接；本实用新型利用可调节长度