Increase steady type load box

The utility model provides an increase steady type load box, including upper junction plate and lower connecting plate to and pass through screw fixed mounting pneumatic cylinder under with between the connecting plate at the upper junction plate, and still include welding installation's displacement bar and detecting tube, wherein the welding installation multilayer increases steady ring on the pneumatic cylinder. According to increase steady type load box for foundation pile self -balancing static test is in order to solve the technical problem that traditional load box easily produced the failure of self -balancing static test. 本实用新型提供种增稳型荷载箱，包括上连接板与下连接板，以及在上连接板与下连接板之间通过螺钉固定安装液压缸，还包括焊接安装的位移杆和检测管，其中在液压缸上焊接安装多层增稳环。根据本实用新型所述的增稳型荷载箱，用于基桩自平衡静载试验，以解决传统荷载箱易产生自平衡静载试验失败的技术问题。