What's the Difference between Lifting Slings and Rigging?

As we all know, lifting slings can be divided into two categories: liftting slings and rigging. Their application industries are almost the same. Therefore, when purchasing, it is difficult for many customers to distinguish whether they want to buy spreaders or rigging. Therefore, knowing the differences between the two The difference is the prerequisite for your purchase. Today I will introduce to you the differences between some spreaders and fixtures.

The English name of the spreader is lifting sling, which refers to the device in the lifting machinery for lifting heavy objects. The most commonly used lifting device for lifting finished items is a hook. Others include lifting rings, lifting suction cups, clamps and forks. It is widely used in the lifting and hoisting industry.

Rigging, whose English name is rigging, is defined by foreigners as the rope components on the net. In China, it is defined as a force-bearing tool that realizes the movement of objects and is tied between the lifting machinery and the lifted object, as well as a tool for stabilizing the space structure. Forced members. It is generally composed of high-strength flexible parts with end rings, hooks, shackles, etc. Its application scope is relatively wide, mainly including: ports, electric power, steel, shipbuilding, petrochemical industry, mining, railway, construction, metallurgy and chemical industry, automobile manufacturing, engineering machinery, papermaking machinery, industrial control, logistics, large-scale transportation, pipelines Ancillary facilities, maritime rescue, marine engineering, airport construction, bridges, aviation, aerospace, venues and other important industries.

Classification, advantages and disadvantages of lifting slings and rigging:

Synthetic fiber sling (Composite Polyester Strappings)

Overview: Synthetic fiber slings (Composite Polyester Strappings) are made of high-strength polyester (acid and alkali resistant), polypropylene (acid and alkali resistant), polyamide (alkali and acid resistant) industrial strong filaments as raw materials, and are woven or wound by industrial looms.

Advantage:

1. Protect the objects being lifted so that their surfaces are not damaged

2. High strength, light weight, easy to carry and prepare for hoisting

3. Soft and easy to operate

4. Non-corrosive and non-conductive

Shortcoming:

1. It is easy to be cut by sharp corners during hoisting.

2. Not suitable for high temperature and high dust environment, operating temperature ≤100 ℃

3. Low wear resistance

4. The length cannot be adjusted at any time

chain rigging

Overview: Chain rigging is composed of a circular chain and accessories such as lifting rings and hooks. It is a metal sling that is divided into level 60, level 80, level 100 and level 120 according to its carrying capacity. The higher the level, the higher the load-bearing capacity of the same specification chain.

advantage:

1. High carrying capacity

2. Good safety, elongation at break ≥20%

3. Various combination forms, strong versatility and interchangeability

4. Adjustable length and easy to store

5.Long service life

6. Wide operating temperature range

7. Easy to detect, convenient and fast

shortcoming:

1. The price is higher than that of slings and wire ropes

2. Too much self-respect

Overview: It is a lifting point fixed on the surface of an object and used for lifting heavy objects. It is divided into bolt type and welding type according to the fixing form.

wire rope rigging

Overview: A steel wire rope is a rope made of multiple or multiple thin steel wires twisted into strands, and then twisted into a spiral by a certain number of strands. In material handling machinery, it is used for lifting, pulling, tightening and carrying. Common rope cores include hemp core and steel core.

advantage:

1: High carrying capacity

2: Light weight

3: Cheap price

shortcoming:

1: The surface is susceptible to wear and corrosion, causing broken wires and affecting the load.

2: Hemp core has a low operating temperature and is not suitable for high-temperature operations.

3: Cannot carry out bypass hoisting

4: Inconvenient to detect

5: Rigid and difficult to store

6: Unable to adjust the length of use

Overview: During the lifting process, standard spreaders cannot meet all lifting needs, so non-standard spreaders must be designed to achieve lifting.