A hydraulic setting anchor of type GY241, and a double packing ZY331 back washing packer features in self pack and rubber sleeve pack are developed.
研制了液压坐封gy241型锚定器和“自封与压缩胶筒”双重密封的ZY331型反洗封隔器。
2
In the light of the disadvantages and limitation of the existing unscrewing type or shearing type safety joints, a hydraulicsleeve type safety joint is designed.
针对现有倒扣式和剪断式安全接头结构上的局限性和缺陷，设计了液压滑套式安全接头。
3
Lifting operation hydraulic system should be no-load operation, adjust the lifting sleeve frame roller and the mast section clearance, hoisting torque and balance torque balance;