The structure of remote control grab

The grab is composed by: 1.Grab Head 2.Transverse Frame 3.Through Beam 4.Press
Rods 5.Scoops 6.Control Valve Group 7.Cylinders 8.Steel Wire Rope and so on. (Refer to Pic.1-1)

 
①.    The press rods are connected to the grab head & scoops via axis pins, and the scoops are connected to the through beam via axis pins.
 
②.    The through beam is connected to the cylinder barrels, and the transverse frame is connected to the piston rods; the two cylinders are installed symmetrically
 
③.    The steel wire ropes lift the transverse frame and are installed symmetrically; to increase the grab closing force via pulleys on the grab head and transverse frame.
 
④.    The balancing stand on the transverse frame bear the lifting capacity of the grab, and for avoiding the excessive force to single rope, the two steel ropes adjust mutually.
 
⑤. The through beam is a box structure, wholly sealed oil tank in the middle of it, and the control valve group is installed on the cover plate of the oil tank.