Strand Lifting Technology - PAUL Maschinenfabrik GmbH & Co. KG
Strand Lifting Technology - PAUL Maschinenfabrik GmbH & Co. KG
Strand Lifting Technology - PAUL Maschinenfabrik GmbH & Co. KG
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<strong>Maschinenfabrik</strong> <strong>GmbH</strong> & <strong>Co</strong>. <strong>KG</strong><br />
Maschi<br />
chinen<br />
nenfab<br />
fabrik<br />
<strong>GmbH</strong><br />
&<strong>Co</strong>.<br />
<strong>KG</strong><br />
<strong>Strand</strong> jacks with mechanical anchor heads (series PDM) are<br />
available for rated loads of up to 1,600 kN, and with hydraulic<br />
anchor heads (series PDH) for rated loads of up to<br />
6,400 kN.<br />
PDM-020<br />
PDH-020<br />
PDM-040<br />
PDH-040<br />
PDM-080<br />
PDH-080<br />
PDM-160<br />
PDH-160<br />
PDH-320<br />
PDH-640<br />
Rated load [kN] 200 400 800 1600 3200 6400<br />
Piston area [cm²] 64 128 256 512 1024 2048<br />
Retraction area [cm²] 50 100 200 400 800 1600<br />
Pressure [bar] 315 315 315 315 315 315<br />
Cylinder force [kN] 202 403 806 1613 3226 6451<br />
Number of strands 2 4 7 15 31 61<br />
Admissible strand force [kN] 240 480 840 1800 3720 7 320<br />
Optimum strand guidance is guaranteed by hardened guide<br />
plates at the anchor heads and suspension. Telescopic strand<br />
guide tubes perform this function inside the hollow piston.<br />
The basic equipment of the strand jack includes the following<br />
components:<br />
• Load holding valve<br />
• <strong>Co</strong>nnection for second strand jack<br />
• 2 electrical pressure sensors to measure pressure on the<br />
piston and retraction side<br />
• Linear potentiometer for piston stroke<br />
• One linear potentiometer each for the wedge-seating<br />
stroke of the anchor heads (series PDH)<br />
The hydraulic anchor heads open and close<br />
the anchor wedges (by pressing them into the<br />
wedge plate). This is particularly beneficial<br />
for pulling operations in horizontal use.<br />
5
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