Description
Hydraulic Stressing jack,YCQ**0Q***0 cross-core hydraulic jack is
widely used in many projects.It is a jack with special craft
1. Usage:This jack uses high-strength steel with special process
and new sealing technology. Compared with YCQA series jack, its
structure is compacter, lower weight,shorter axial length, shorter
reserving length outside the prestressing steel strand so that it
can save a large number of steel strand materials. With a large
number of actual construction uses and tests, it proves a good
performance,durable service,easy lifting,easy using and easy
maintenance. This jack is not applicable to push, lift and drop
beams.
2. Operating principle The oil cylinder ,heading cover(adjusting
nut) ,end cover(hold-down ring), front sealing plate,back sealing
plate of this jack connect with cross-core socket to form a
motionless body,and the piston of the jack is motion
body,when the hydraulic oil pushes the motion body to the right, it
begins to tension; When the hydraulic oil pushes the motion body to
the left, it is the piston-return after the tension.
3. Use hydraulic oil for *5 degree,kinematic viscosity for *5~ *0
mm2/s,the diameter of the impurity is not more than **7 um and high
quality mineral oil with a certain rust resistance, recommend *2 #
hydraulic oil in winter, *6 # hydraulic oil in summer, when it is
used in special environment, using other types of oil.
