2. Lifting chain rigging points to note
are what
• 1 , the chain is not allowed in the course of knotted or twisted ;
• 2, can not load with hook tip ;
• 3 , chain rigging the normal operating temperature of -40 degrees
to +200 degrees ;
• 4 , leg rigging, 30 ton crane lifting point should be located vertically
above the center of gravity of the object ;
• 5,3 If the legs rigging , lifting objects hanging points should be
located on both sides , lifting points above the center of gravity ;
• 6, if the three- legged and four- legged rigging , rigging point should
be uniform focus is on lifting the object level, pillar mounted jib
crane and was hanging over the center of gravity .
3. Sling lifting rigging points to note
• 1 Please note that in the course of the
relationship between the angle between the
carrying tonnage ;
• 2, if the lifting sets of rigging used with
damage , no use ;
• 3, to avoid shock or vibration loading ;
• 4 , the safety factor of 4:1 , 5:1 or 6:1
particular , materials lifting equipment the
safety factor to be used within the range.
4. Hoist the specific requirements for
environmental site
• Hoist before the job , you need to inspect the site to explore the
environment , but also the need for basic workplace layout and
improved in order to ensure the smooth operation of electric hoist.
• For the construction site should be flat , to " Stone one level" , the
construction of water , electricity and gas to reach conditions of use
; another such encounter dark weather or foggy weather , should
be on the scene with a reliable lighting / eye-catching lights ,
communications and fire protection facilities , fire exits and smooth
; installation of equipment to the construction site under
construction and other systems have reliable isolation and isolation
; has spare parts, tools and construction materials, storage space ,
there should be a corresponding wind, rain , frost and other
protective measures , inspection of parts, should not be installed in
time temporary storage safekeeping ; and 20 ton electric chain hoist
the main civil works related to the completion of the installation ,
lightning ground improvement.