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PONT ELEVATEUR 4 COLONNES
PE 4101T
CHEMIN PLAT OSCILLANT 400V 5T
Installation and principle of wire rope
The lift consists of posts, longitudinal beams, cross beams, hydraulic drives, electrical devices, wire
ropes, pulley blocks and others.
The drive diagram of the work platform is as follows. The cylinder 1 is located in the main longitudinal
beam, the front end of the piston rod is fixed with a rope shaft 2, and the left and right ends of
the rope shaft are respectively used to fix the wire ropes a, b, c and d. The wire rope a is fixed
at the upper end of the post A bypassing the double-groove pulley block 3 and the pulley 5; the
wire rope b is fixed at the upper end of the post B bypassing the double-groove pulley block 3,
the single-groove pulley block 4 and the pulley 7; the wire rope c is fixed at the upper end of the
post C bypassing the double-groove pulley block 3 and the pulley 6; the wire rope d is fixed at
the upper end of the post D bypassing the double-groove pulley block 3, the single-groove pulley
block 4 and the pulley 8.
To lift the work platform, press the UP button to start the motor, then the oil pump rotates, the
pressure oil enters the front chamber of the cylinder to push the piston to move backward, then
the wire ropes a, b, c and d are pulled through the rope shaft 2, and finally the work platform rises
stably through the pulley block and the cross beam pulley.
To lower the work platform, press the lowering handle on the pump station to open the hydraulic
valve oil return passage, then the hydraulic oil in the cylinder is discharged back to the hydraulic
oil tank under the force of gravity, and the piston rod is pulled outward through the wire rope,
and finally the work platform is lowered stably. The opening size of the oil return passage can be
changed by the pressing force of the handle so as to control the lowering speed on the premise
of safety and stability.
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