A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.
What are the parts of a crane called?
The Various Functions of Mobile Crane Parts
- The Driving Components. In any mobile crane, one of the common components will be the driving system used to make it mobile. …
- The Operator’s Cabin. The operator’s cabin houses all of the crane’s controls. …
- The Boom. …
- Hoist and Hook. …
- Hydraulic Pump. …
- Outriggers and Counterweights.
6 февр. 2020 г.
What is a crane hook block?
“A hook block is an assembly to which the hook of a hoist or crane is attached; it typically consists of a steel enclosure housing a number of sheaves or pulleys that carry the ropes or chains that facilitate the lifting of a load.
What is a sling hook?
A sling hook is most commonly used with choker chain sling when a lifting chain eye is provided on the load. Sling hooks have a full, wide throat (choker hitch).
How many types of crane hooks are there?
Single Crane Hooks and Double Crane Hooks
The most common crane hooks get Classified on the basis of their shape. Depending upon the shape there are two types of crane hooks that are single crane hooks and double crane hooks.
What is a crane boom called?
Boom. The most recognizable part of a crane, the boom is the arm of the crane that holds the load and allows the crane to move the load closer to or away from the crane by lowering and raising the Boom.
What stops the crane from falling over when it lifts something?
Why Don’t Tower Cranes Fall Over? This is mostly down to the concrete base, which is massive and needs to be poured weeks before the crane arrives. The triangulated cross-member structure of the mast gives it more stability and prevents bending. Plus, it’s anchored and bolted to the ground.
Which material is used for crane hook?
Abstract In this paper the design of the hook is done by analytical method and design is done for the different materials like forged steel, wrought iron and high tensile steel. Crane hook is very significant component used for lifting the load with the help of chain or wire ropes.
What is a sheave on a crane?
They are used in tandem with a rope, belt, or cable to lift items with a crane. Essentially, a sheave is a wheel with an open groove that a rope or cable fits around so it can rotate around the exterior. … The most common design for a sheave block that is used in lifting equipment is comprised of seven parts: Hook.
What is the use of chain slings?
One of those pieces of equipment often utilized to lift these types of loads is the chain sling. These slings can be used in various industrial and construction applications. These slings are flexible, temperature resistant, and strong enough to handle a wide array of loading conditions.
What is a clevis hook?
The clevis is a U-shaped piece that has holes at the end of prongs to accept the clevis pin. … A clevis hook is a hook, with or without a snap lock, with a clevis and bolt or pin at the base. The clevis is used to fasten the hook to a bracket or chain.
Are safety latches required on lifting hooks?
The requirement for safety latches (AKA throat latches) is only specified in OSHA 1910.181(j)(2)(ii), which states that “Safety latch type hooks shall be used wherever possible.”
What is a slip hook?
Forged Clevis cargo slip hooks are designed with a wider throat than grab hooks which allows the chain to slip through the hook in order to hold it securely. Grade 70 Clevis Slip Hooks have a removable latch and clevis pin and are to be used with grade 70 or greater chain for load hauling and load securement.
What is the material of sling hook?
Sling Hooks – Sling eye hooks are specifically designed for grabbing and lifting applications. The heavy-duty hooks are made from tough alloy steel that has been precision control quenched and tempered to give maximum strength.
What are crane hooks made of?
Forging Crane Hooks
These hooks are forged from a single piece of high quality steel with low carbon which is cooled slowly to ensure optimum stress resistance (usually ranging from 16Mn to 36MnSi).