Lifting spreaders and rigging
2022-02-21
. Terms and definitions of lifting slings and rigging 1. Formal terms and definitions (1) Lifting spreader: a device used to lift objects in the operation of lifting machinery. (2) Lifting rigging: refers to the utensils used to tie and hang heavy objects in lifting operations, such as metal rigging, synthetic fiber rigging, etc. (3) Clamping hoisting sling: a hoisting sling that exerts positive pressure on the side of the object to be lifted through the clamping part of the sling, and overcomes the gravity of the object to be lifted by the effect of the positive pressure. (4) Hanging hoisting sling: A hoisting sling that supports the object to be hoisted by means of suspension, and the mass center of the object to be hoisted is located below the stress surface of the sling and the object to be hoisted. (5) Fork-type lifting spreader: take the load through the fork or support the load through the bracket, and the load support point is on the fork or the bracket. . Basic requirements for lifting slings and rigging "Safety Regulations for Lifting Equipment Spreaders and Rigging" (LD48-1993) has made the most basic safety requirements for the design, manufacture, inspection, use, scrapping, maintenance and management of lifting equipment spreaders and rigging. Regulation. 1. Common requirements for safe operation of spreaders and rigging (1) The slings and rigging should be adapted to the type of hoisting weight, specific requirements for hoisting and environmental conditions. (2) The spreader (including control, braking system and safety protection device) and rigging should be checked before operation, and it can be put into use only when it is confirmed to be in good condition and function normally. 2. Storage requirements for spreaders and rigging When the slings and riggings are idle, they should have the corresponding degree of protection and should not be affected by rust, corrosion or harmful effects such as humidity and high temperature. The protective measures shall meet the following requirements: (1) Mechanical parts that are easy to corrode, such as the exposed part of the piston rod. It should be coated with yellow glycerin and then wrapped with rags and other items. (2) The bearings and pins of the rotating and shaking parts should be filled with grease. (3) The slings and Wire Rope slings should be cleaned, and then rubbed with grease after drying.
