Warszawski Hackerspace

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 ====== Wall mounted slewing jib crane ======

The proposal is to build a slewing wall-mounted jib crane on a column near the Bridgeport milling machine.
{{ :projects:jibcrane:column_jib_crane.jpg?nolink&400 | Monting place}}
\\ Crane will be used for lifting parts, accessories and material on and off milling machine and the metal lathe.\\ 
**Requirements**: \\   
  * Jib length - 3m (to reach the lathe. Can't be much longer than that to be able to clear the opposite wall)
  * Lifting capacity - 50 kg near the tip, 150 kg at the column (main uses near the tip would be lathe chucks, crosslide attachements and the lathe tailstock; near the column - milling vise, dividing head and the rotary table)
  * Ability to slew around the column to cover 180° of area
\\  

===== Inspiration =====

{{:projects:jibcrane:erikkila_jib_crane.png?nolink&400 |}}{{ :projects:jibcrane:ellis_jib_crane.jpg?nolink&400 |}}

\\  
===== Construction =====
The crane consists of:
  * top and bottom mounting plates which attach the crane to the brick column and provide bearing housing
  * main crane body which consists of a metal column, a jib attached to it and a supporting brace
  * trolley which rides along the jib
  * electric winch which attaches to the trolley and does the lifting
==== Sketch (disregard the dimensions) ====
{{ :projects:jibcrane:jibcrane_sketch.png?nolink&400 |}}
Materials aquired: 
  * I-beam(//dwuteownik//) (Height=100mm Lenght=3m) - for the jib
  * Pipe (D=108mm Length=3m) - for the column
  * Flat bar (//płaskownik//) 50x5mm Lenght=6m - for the brace
  * Plate (Thickness=10mm) - for mounting plates
  * Bottom bearings - (32008 AX KLF-ZVL 40x68x19)
  * Top bearings - from the ventilation unit