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Stressing jack and Hydraulic pump unit. article

 

 

 

 

 

 

 

 

 

 

The automatic single wire stressing jack and the high pressure hydraulic pump unit is the most commonly used in pre-cast concrete production plants. It’s easy to handle and operate, efficiency of production and suitable for many applications.

 

 

 

 

 

 

 

 

Stressing on the construction site

Multi-strand stressing jacks

 TENSA M or TENSA M-PV multi-strand stressing jacks are designed for the quick and exact post-tensioning of multi-strand tendons.
Compared to the TENSA M jacks (with rear-gripping feature), the front-gripping TENSA M-PV models only require a very short projecting strand length for attachment

TENSA M multi-strand jacks

max. prestressing force
(kN)

max. stressing stroke
(mm)

min. projecting strand length
(mm)

max. number of strands
(0,6")

Weight
(kg)

1000

250

700

7

120

1090

200

650

5

80

1500

250

650

9

195

1700

250

750

7

190

2100

250

800

12

260

3000

460

1000

15

420

4800

300

1050

15

750

6500

300

1100

27

1060

6800

300

1100

27

1185

9750

300

1200

37

1770

15000

500

1650

108

5800

 

TENSA M-PV multi-strand jacks

max. prestressing force
(kN)

max. stressing stroke
(mm)

min. projecting strand length
(mm)

max. number of strands
(0,6")

Weight
(kg)

1650

120

260

3

70

650

450

150

3

136

850

250

160

4

100

3000

250

230

15

390

4800

100

320

22

643

8600

300

500

61

2150

8600 kN TENSA M-PV multi-strand stressing jacks ready for dispatch

Stay cable technology

Depending on the method adopted, stay cables are either stressed complete using large multi-strand stressing jacks or inserted individually in stay cable ducts and stressed using lightweight single-strand stressing jacks. We supply suitable stressing jacks and strand pulling / pushing equipment for both methods.

The stay cables of existing bridges are adjusted using large multi-strand stressing jacks. The stress is increased or reduced by stretching the whole stay cable and tightening or loosening the anchor nuts.

 

For prestressing on the construction site, we offer a wide range of accessories, which are easily transportable and are consequently flexible in use.
They include portable and wheel-mounted pump units, large strand pushing machines with pneumatic tyres, plus cable or radio controls and any more. Please contact us with your special requirements.

 

Portable pump unit

All heavy equipments is fitted with strong lifting eyes and can thus be easily loaded by crane

Portable pump unit and multi-strand stressing jack for post-tensioning in mobile use.

Cable or radio control makes the operation of a strand pushing machine much easier. The operator does not stand at the pushing device but directly at the tendon and is thus in a much better position to monitor the insertion of the strands. Naturally, a radio controlled system also provides a valuable service in the concrete factory for pushing the strands into the mould.

Wheel-mounted strand pushing machine which offers mobility & flexibility




PAUL Hydraulic pump unit

Prestressed concrete production in the factory 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