1. What is Synchronous Multiple Strand Jack?
Very heavy loads can be positioned by synchronizing multiple-strand jacks with the aid of a computerized control system. Strand jacks find applications in the erection of bridges, offshore structures, refineries, power stations, major buildings, and other structures where the use of conventional cranes is either uneconomical or impractical.
2. How to Use computer control Synchronous Multiple Strand Jack?
In recent years, computer control has added to the versatility and safety of strand jack technology. In theory, any number of strand jacks can be used simultaneously to achieve unlimited lifting capacity, with computer controls to keep the motion of all jacks synchronized. In practice, the maximum number of jacks that can currently be used simultaneously and kept under existing computer control systems is 80,
and the largest jacks on the market today can lift 1022t with a safety factor of 2 . 5. Therefore loads of up to 81,760t can be lifted with utmost precision and safety using a single computer control system.
3. What are the differences between steel strands used for Synchronous Multiple Strand Jack?
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The high tensile strands used in strand jacks are of the same solid wire seven-piece construction as used in pre and post-tensioned concrete.
These strands are often run through an additional manufacturing process to reduce their diameter further by flattening/rounding slightly the outer wires to give the strand a more circumferential contact area.
The reduction of diameter means more strands can be utilized within a given area although the sectional areas are the same.
Additionally, the increased circumferential area allows more contact area with the collets and hence less wear. |
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4. How Does Synchronous Multiple Strand Jacks Work?
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The diagram demonstrates the operating principle of the stranded wire jack when lifting the load.
For clarity only one strand has been shown in the diagram. The capacity of a strand jack is directly proportional to the number of strands used.
For example, strand numbers can range from a single strand to 55 strands in a 6600kN jack. Strands are usually 15.2mm in diameter although 18mm diameter strands are sometimes used. |
5. Consulting Shaanxi Zhongtuo - Optimizing Production with Synchronous Multiple Strand Jacks
Shaanxi Zhongtuo, as a professional manufacturer of prestressed jacks, is recommended to use Shaanxi Zhongtuo when choosing synchronous lifting jacks for post-tensioning in the bridge construction industry.
Custom options are available.
The prestressing and tensioning of large tonnage bridges is a major challenge, and the synchronous lifting system greatly solves this problem. Shaanxi Zhongtuo synchronous lifting system provides a 24-month warranty. If the device itself is damaged or unable to function properly, we provide free repair and replacement services. The host and hydraulic components are covered by a 2-year warranty, while vulnerable parts are covered by a 6-month warranty. Synchronous enhancement manufacturers can provide further recommendations based on their extensive application expertise. Shaanxi Zhongtuo provides you with a navigation solution for prestressed post-tensioning in bridge construction!
Please contact us through the following methods: jenny@ztmineequipment.com