What are crane hooks made of?
Some common materials used to make the crane hook are Carbon steel, Alloy steels, Wrought iron, HSLA (High Speed Low Alloy), Chromium steel, Stainless steel and Gray cast iron [3, 6].
What is a cranes hook called?
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 is the most suitable section for a crane hook?
The Trapezoidal cross-section hooks are more common as it is able to absorb more vertical load and deflection. It is able to absorb and store more strain energy, thereby ensuring safety of the crane.
Which iron is used in crane’s hook?
Wrought iron
Wrought iron: It is tough, malleable and ductile and can easily be forged or welded. It cannot, however, take sudden shock. Chains, crane hooks, railway couplings, and such other components may be made of this iron.
What is laminated hook?
Laminated hooks are the components which are generally used to lift the heavy load in industries and constructional work. Use for transport, construction and manufacturing industries Laminated hooks are widely used in Steel industry ( ferrous and non-ferrous). They are use for lifting and pouring of hot metal ladles.
What is the use of crane hook?
Crane hooks are used to attach loads to the crane apparatus. Cranes allow people to move materials horizontally, as well as vertically.
Which type of cross section is preferred in case of crane hook?
trapezoidal cross section
From the analysis, it is found that the stress induced in trapezoidal cross section is less than that of other four cross section which suggest that Crane Hooks having Trapezoidal are more durable and have greater capacity to absorb and store deflection produced by vertical load.
What is the nature of stress in the inside section of a crane hook?
Maximum stress on the inner most surfaces is 387 N/mm2 which is tensile in nature and on the outer most surface of the hook it is -134 N/mm2 which is compressive in nature as shown in fig.
What are the properties of wrought iron?
Characteristics of Wrought Iron
- Soft.
- Ductile.
- Magnetic.
- Strong – high elasticity and tensile strength.
- Malleable – can be heated and reheated and worked into various shapes.
- Becomes stronger the more it is worked.
What is hoist in crane?
A hoist is a device used for lifting and lowering loads while a crane is a device used for moving loads in different directions. A hoist can only move loads vertically while a crane can move loads vertically and horizontally.