The level luffing cranes are type of cranes which are usually used in shipbuilding industries, where there is a need of maintaning fixed distance between lifted loads with respect to ground.
These cranes are may be of fixed type or movable type. Usually movable types of cranes are found more in building the ships, as they can travel by side of ships under construction/repairs.
A level luffing crane is a crane mechanism where the hook remains at the same level whilst luffing; moving the jib up and down, so as to move the hook inwards and outwards relative to the base.[1]
Some types of crane are inherently level luffing: those with a fixed horizontal jib, such as gantry, hammerhead or the fixed-jib tower cranes commonly used in construction. Usually though, the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Level luffing is most important when careful movement of a load near ground level is required, such as in construction or shipbuilding. This partially explains the popularity of fixed horizontal jibs in these fields
There are many parts of cranes which are considered to be most critical as far as load carrying is concerned.
These are the few usefull video which brings a brief idea how cranes works
http://www.youtube.com/watch?v=KQa0V2Qasv8&NR=1
Please check next post for more details
For any quiry, post in comments
These cranes are may be of fixed type or movable type. Usually movable types of cranes are found more in building the ships, as they can travel by side of ships under construction/repairs.
A level luffing crane is a crane mechanism where the hook remains at the same level whilst luffing; moving the jib up and down, so as to move the hook inwards and outwards relative to the base.[1]
Some types of crane are inherently level luffing: those with a fixed horizontal jib, such as gantry, hammerhead or the fixed-jib tower cranes commonly used in construction. Usually though, the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Level luffing is most important when careful movement of a load near ground level is required, such as in construction or shipbuilding. This partially explains the popularity of fixed horizontal jibs in these fields
There are many parts of cranes which are considered to be most critical as far as load carrying is concerned.
These are the few usefull video which brings a brief idea how cranes works
http://www.youtube.com/watch?v=KQa0V2Qasv8&NR=1
For any quiry, post in comments
