When the tower crane is raised, the hydraulic pump is broken, and the oil change pump is dangerous

This normal situation is that you can directly lift the pressure hand first, and then press it down, but I don't know if all sofas are like this, you can try my method to see if it works.

This normal situation is that you can directly lift the pressure hand first, and then press it down, but I don't know if all sofas are like this, you can try my method to see if it works.

The small room on the top of the tower crane is called the driver's room (or operation room), and the tower crane driver climbs up step by step from the ground to the driver's cab through the special ladder fixed in the standard section of the tower body (welded by the tower crane manufacturer in the production of the standard section while welding the steel bar ladder installed in the standard section). >>>More

The quality of the wire rope almost directly pulls off the wire rope, and the pulley bearing may also be broken.

The hydraulic device, equivalent to a large jack, uses the hydraulic pump to pressurize, transmits the pressure to the oil top through the oil cylinder, the oil top valve stem stretches out, the gold beam resists the standard section climbing claw, stretches to the maximum, inserts the stability from the sleeve hole, blocks the climbing claw, the valve stem retreats into the next cycle, when jacking up a section, pulling in the standard section, tightening the screw, and so on.