Description
hydraulic stressing jack,YCQ**0Q***0 cross-core hydraulic jack is
widely used in many projects.It is a jack with special craft 2.
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. 3. 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 bodyâ€, and the piston of the jack
is “motion bodyâ€, 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. 4. Use hydraulic oil for *5°C,kinematic viscosity for
*5~ *0 mm2/s,the diameter of the impurity is not more than **7 μ m
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.
