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Heavy Lifting Strand Jacks With Hydraulic Cylinders

hydraulic strand lifting system provides a custom-engineered solution for the toughest jobs. It combines proven components from VSL’s strand post-tensioning system with hydraulic jacks and pumps to lift heavy loads safely and economically.

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Introduction of heavy lifting strand jacks:

The strand-lifting technique has become ever more technologically advanced to meet strong growth in the demand for visionary architecture and for heavy lifting solutions that do not rely on cranes.

Automatically controlled hydraulic jacks together with strands and the VSL skidding system allow for lifting, lowering, tilting, sliding, jacking or skidding of heavy loads e.g. bridges, roofs, antennas, pinnacles, boilers, offshore platforms, tunnel boring machines or structures.

VSL is a major player in this market: its Heavy Lifting system has contributed to enhancing quality and safety as well as compressing construction schedules and reducing costs. VSL’s specialised hydraulic lifting equipment is designed to provide the highest level of reliability and all equipment is rigorously tested and serviced.

At the end of the 1960s, VSL came up with the visionary idea of lifting heavy loads by combining proven components from its strand post-tensioning system with hydraulic jacks and pumps.

The initial application involved three 490t concrete dome shells for a series of circular aluminium silos in Sardinia. They were lifted 28m and then fixed into their final positions. Lifting and stressing of the steel cable-net system for the acrylic tent-shaped roofs at Munich's Olympic Stadium in 1971 served as another milestone in the development of this new erection technique.

Strong growth in the market for visionary architecture and the demand for alternative heavy lifting (lifting by means other than cranes) have spurred the use of the state-of-the-art strand-lifting technique. VSL continues to be a major player in the market.

Equipment and controls have been improved and new fields of application have opened up. VSL's Heavy Lifting system has contributed to enhancing quality and safety, compressing construction schedules and saving money. VSL continues to stand for innovative engineering, high safety standards and reliable performance.

Top priorities are the safety of personnel and components together with a high regard for environmental impact. VSL’s specialised hydraulic lifting equipment is designed for the highest level of reliability and all equipment is rigorously tested and serviced through a quality control and maintenance programme. VSL field service teams all have a total commitment to safety.

product of heavy lifting strand jacks:

model

Safe working load

Working pressure

MPA

Cylinder stroke

mm

Retraction height

mm

Jack weight

KG

Fixed anchor weight

KG

boost speed

m/h

Number of strands

Strand diametermm

ZT-TSD15

15

31.5

500

1846

148

3.2

0-25

1

18

ZT-TSD45

45

31.5

500

1726

600

28

0-25

3

18

ZT-TSD60

60

31.5

500

1726

630

32

0-25

4

18

ZT-TSD100

100

31.5

500

1790

930

46

70-25

7

18

ZT-TSD180

180

31.5

500

1886

1560

90

0-25

12

18

ZT-TSD280

280

31.5

500

1938

2330

130

0-25

19

18

ZT-TSD300

300

31.5

500

1940

2460

140

0-25

20

18

ZT-TSD400

400

31.5

500

2100

3396

220

0-25

27

18

ZT-TSD580

580

31.5

500

2220

4980

260

0-25

38

18

ZT-TSD680

680

31.5

500

2180

5410

320

0-25

45

18

ZT-TSD800

800

31.5

500

2200

6880

360

0-25

54

18

ZT-TSD1000

1000

31.5

500

2286

8520

560

0-25

66

18

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2,Fast and safe delivery with secure and discreet shipment.

3,With us, your money is in safe as well as your business.It's our promise to you!

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