When hoisting any large or heavy equipment off the catwalk always check the Working Load Limit (WLL) of the air winch, or use the travelling block or crane if available.
当从猫道上提升体积大或较重的设备时，要检查气动绞车的额定工作负荷，或使用游车或吊车(如果有)。
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This paper presents the content and method of design and calculation of horizontal anchor block in hoisting device by using some examples.