Lock Nut Hydraulic Jack In the bridge erection project, an electric pumping station can be 4 to 32 (or more) synchronous jack jack to provide power, synchronous jacking to achieve the bridge support pad to install or replace.
Bridge construction is very complex, the reliability of the equipment directly affects the success or failure of the project. Hydraulic system for the bridge structure of the support, Hydraulic Cylinder Jack lifting and other applications to provide a reliable guarantee. In the bridge erection works.
Body height mm
Stretch height mm
Cylinder outside diameter D(mm)
Maximum working pressure Mpa(bar)
1, Manual lock nut hydraulic jack equipment, hydraulic jacking equipment, synchronous jacking cylinder, bridge synchronous jacking system (thin roof) when using the phenomenon of air play, you can first relax the pump on the oil drain screw, the pump body vertical Get up and down to play a few times, and then tighten the oil screw, you can continue to use.
2, when used, shall not be partial load or overload, so as to avoid the risk of damage to the thin jack. In the event of load, should not remove the quick connector, in order to avoid accidents and damage to mechanical parts.
3, the thin jack is the oil as the medium, must do a good job of oil and the maintenance of the machine, so as not to block or oil, affecting the use of results.
4, the new or long for the thin jack, because the cylinder has more air, began to use, the piston rod may be a slight jump phenomenon, the thin Hydraulic Cylinder Jack can be loaded into the complex movement 2-3 times to exclude the cavity air. Long-term idle pressure on the top, because the seal does not work long-term caused by the hardening of the seal, thus affecting the service life of the top of the pressure, so the thin jack when not in use, the monthly load of small Flat Jack Lock Nut Cylinder
5, high-pressure tubing factory through 105Mpa (1050Kgf / cm2) test. But because the hose is easy to aging, so users often need to check, usually six months, frequent users for three months. Check with 87.5Mpa (875Kgf / cm2) test pressure, if blasting, convex
From, leakage and other phenomena can not be used.
6, the operation should be strictly abide by the technical specifications, the user should be based on the use of regular inspection and maintenance