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Prestressed concrete production in the factory article

We supply all installation components, machines and accessories for prestressing on casting beds. They include the permanent components, such as abutment anchor posts, transverse anchor plates etc.
Also when choosing mobile stressing equipment, our large product range always provides the appropriate solution (see also under "Planning an advice"):

 

Detensioning pump unit and two detensioning cylinders

- Pump units as the universal drive unit for stressing jacks, steel cutters etc.
- Wire pushing machines for feeding the prestressing strands into the formwork
- Single-wire stressing jacks from 30 to 300 kN prestressing force (see table).
- Screw jacks for the exact stressing of short prestressing wires
- Twin ram jacks for stressing mono strands can be applied from above
- Detensioning cylinders from 200 to 10.000 kN for uniform force transmission
- Special detensioning anchors have been developed and supplied for sliding mould production which allows the slideformer to pass over

 Twin ram jack

 

 

The wide range of single-wire stressing jacks (see table) for different prestressing forces and strokes plus powerful pump units provides the appropriate machines for every application.

 

 

4-hose stressing jacks

max prestressing force
(kN)

max stroke
(mm)

min. projecting wire/strand length
(mm)

Weight
(kg)

30

200

160

18.5

30

500

160

24.0

60

200

160

19.5

60

400

160

25.0

120

200

170

29.0

120

500

170

45.0

160

200

170

31.0

160

300

170

34.0

160

500

170

47.0

300

200

155

39.0

300

400

170

    50.0

2-hose stressing jacks

max prestressing force
(kN)

max stroke
(mm)

min. projecting wire/strand length
(mm)

Weight
(kg)

30

200

185

17.0

30

600

185

27.0

60

200

185

18.0

60

600

185

28.0

180

250

333

36.0

180

500

333

43.0

250

250

345

44.0

250

500

345

   56.0

The mini stressing jacks are suitable for short pre-stressing bed production on sizes 3 to 7 mm dia. wire/strand in the production such as fencing posts and for universities / schools for training purposes.

The mini jack is usually supplied with hand pump or mini pump unit but of course the mini jack can be used with any pump unit supplied by Paul.

 

 

 

Mini stressing jack

 

Mini stressing jack with hand pump (stroke 100 mm, force up to 200 kN)




PAUL Hydraulic pump unit

Stressing jack and Hydraulic pump unit. article



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P.R. ENGINEERING LTD.,PART.
880 On-Nut 46 Suanluang Bangkok 10250 Thailand
Tel. +66 (0) 2321 1361, +66 (0) 2321 3440, +66 (0) 2321 7798 Fax. +66 (0) 2321 3643
Email : info@pr-engineer.com