1results about How to "Increase weld length" patented technology

The application relates to the field of building construction and discloses an attached support rod and a tower crane. The attached support rod comprises an angle steel column and end plates. The angle steel column comprises a plurality of sequentially arranged connecting angle steels. One of any two adjacent connecting angle steels is provided with a connecting notch, and the other connecting angle steel is provided with a connecting protrusion. The connecting notch and the connecting protrusion are matched in shape and are connected through a connecting inclined surface. The two end plates are oppositely arranged along the length direction of the angle steel column, and the two ends of the angle steel column correspond to the two end plates respectively. Through the matched connection of the connecting notch and the connecting protrusion and the connecting inclined surface welding, the overall structural strength and stability of the attached support rod are significantly enhanced. The short connecting angle steels are overlapped to form an angle steel column with a required length, and the heavy flange plates or ear plates and other accessories in the traditional lengthening mode are replaced. Therefore, the material utilization rate is greatly improved, and the waste of additional connecting parts is avoided.