针对舟山与大陆联网大跨越工程2基370 m高塔的组立施工特点，研制了T2D750/22双摇臂抱杆。该抱杆具有以下几个创新技术及其特点，包括海岛高空抗强台风计算、起升绕绳系统、起升和变幅钢丝绳防干扰装置、双侧力矩控制系统、摇臂防撞装置、井筒吊装系统和SC60变频施工升降机等。

The T2D750/22 gin pole with double rockers are investigated, aiming at the construction characteristics of two 370-meter high towers in the large-crossing transmission project between Zhoushan island and mainland. The innovative technologies of the gin pole include calculation of violent typhoon resistance at high attitude of island, hoisting and reeving system, anti-interference device of hoisting and luffing rope, bilateral moment control system, anti-collision device for the rocker, hoisting system for lifting mast section and SC60 frequency conversion construction hoist etc.