Strand Jacks
Climbing Jacks
Power Packs
Control Systems
We have been designing, manufacturing and using hydraulic strand jack and climbing jack systems for over 20 years for use in the construction of bridges, refineries, offshore structures, large roof structures, power stations and other projects where these systems can be used to advantage. The heavy lifting and skidding operations performed using this equipment are usually critical to the success of a project and it is therefore essential that the equipment is robust, reliable and easily serviced. All our jacking systems are 100% designed and developed in-house to international standards and designed and manufactured in accordance with our accredited ISO 9001 quality management systems. Our systems are designed for safety, long life, robust performance and ease of maintenance. The jacking systems that we supply to our clients are identical to the systems that we make for our own use. To date we have manufactured over 400 strand jacks and climbing jacks for clients all over the world, with a combined lifting capacity of over 90,000 tonnes. For a full list of the jacks we have manufactired to date click here>>.
All our systems are supplied with a comprehensive manual for the operation and maintenance of the equipment, including a full set of test certificates and a section giving guidance on method statements, risk assessment and health & safety with examples from our own heavy lifting projects. We offer on-site support, advice and training given by our own heavy lifting Site Supervisors to ensure that the equipment is used safely and properly maintained. We are also able to offer expert in-house engineering advice to our clients on how to use the equipment to best advantage, including detailed design of temporary works.
DLT Strand jack carriage
We offer a range of strand jacks, hydraulic power packs and control systems to cater for all requirements and will be happy to advise on the right system for your project. Our strand jacks incorporate the latest safety features and range from light DL-S15 (15 tonne lifting capacity per jack) ‘super tirfors’ through to our DL-S1022 (1022 tonnes lifting capacity per jack more>> ) and can be safely used in combinations of up to 40 jacks by a single operator using our DL-P40 computer control system. Click on the strand jack to the left to view a power point presentation showing the operating sequences for lifting and lowering using a strand jack.
Our DL-P40 computer control system can be used to control both strand jacks and climbing jacks and is fully developed in-house using feedback from our own operators on site. It uses the latest CANbus network technology for ultra-reliable communication between all jacks, power packs and the control computer and has been tested and certified to the latest European electrical EMC standards, view certificate. The system will automatically synchronise the operation of all the jacks to maintain a level and balanced set of jack loads and has many automated features to ensure a safe lift. During an operation the operator is presented with all the lift data in one clear and easy to read screen, as shown below for a 40 jack lift. Move your mouse over the screen for an explanation of each function. For more details see our jacking systems brochure. To download and run the full program on your own computer follow this link>>.
Climbing jacks offer an attractive alternative to strand jacks where it is desirable to keep the load path beneath the item being lifted. We have used climbing jack systems ourselves for lifting bridge structures, roofs and petrochemical vessels and find them to be a rugged and useful addition to our fleet. They work by climbing a square compression bar that transfers the lift load down to its base. Each jack can have a lifting capacity of between 100 and 450 tonnes. The square bar is restrained from compression buckling by light restraints, which can be fitted to building columns, bridge piers etc. Safety, power and control systems are as offered for our strand jacks. Click on the climbing jack to the left to view a power point presentation showing the operating sequences to lift and lower using a climbing jack.
