Pdf the 4000 tonne lift of stonecutters bridge steel backspans, h. Tmg has a range of stressing equipments that includes mono jack. Strand jack technology offers comprehensive control of a lift including. The farm jack is also known as a hilift jack or railroad jack. Prestressing jacks mono strand pre stressing jacks.
Application of sand jacks to temporary wedge the precastprestressed beams of a 450 meters x 2 twinlane bridge, until the crossbeams concrete matured to finally bear the entire weight. In a strand jack, a bundle of steel cables or strands are guided through a hydraulic cylinder. Above and below the cylinder are anchor systems with wedges that grip the strand bundle simultaneously, this is how the strand jack. To comment on this paper, please email up to 500 words to the editor at. Mammoets strand jacks offer faster and more efficient routes for transporting heavy objects horizontally or vertically, even in situations where the amount of available space is limited. Hydraulic strand jacks strand jack systems enerpac. China high tonnage heavy duty lifting strand jack, find details about china strand jack animation, lifting strand jacks from high tonnage heavy. Strand jacks, strand jack for construction, 200t hydraulic jack manufacturer supplier in china, offering strand jacks construction sv sj, clp1002 model hydraulic jack with local nut, 1837 nm. A strand jack also known as strandjack is a jack used to lift very heavy loads for construction. Dorman long technology strand jack systems strand jacks, power packs and control systems. Annexurei specification of strand jack for heavy lifting 1. Power stress mono strand stressing jacks are front gripping jacks suitable for 10, 12.
If you would like to see this page in another language, please use the language dropdown. There are english manual or teaching video that show how to use machine. New quotes of sourcing request 0 manage products edit my showroom sign out. This is a suitable concept for a single heavy lift during a project, for example using mammoets msg system. Hand seating tool for unbonded single strand tendons, a handheld device used to preseat the wedges in the anchor before stressing. Strand jack dimensions and specifications type 3 type 4 capacity 900 t 900 t working pressure of the cylinder 400 bar 400 bar stroke 400 mm 400 mm strand type dyform dyform strand diameter 18 mm 18 mm max. Hello, i love the jack editor and have been using it constantly to work on my mod occultscrim for hl1. Annexurei technical specification of strand jack for.
Hydraulic jacks providing you the best range of threaded ram double acting general purpose jacks, aluminium general purpose threaded ram jacks, aluminium general purpose plain ram jacks, bar stressing jacks, multi strand jacks and pile testing jacks. Other strand jack systems usually have the strands hanging free from the jack instead of being coiled as. Strands lift, hydraulic lift, strand lift manufacturer supplier in china, offering strand jack lifting, clp1002 model hydraulic jack with local nut, 1837 nm sqaure driven hydraulic torque wrench and so on. China strand jack lifting china strands lift, hydraulic lift. Strand jacks ideal for continually lifting heavy loads precisely over long distances a strand jack can be considered a linear winch. China wholesale 60600 tons hydraulic strand jack system. Annexurei specification of strand jack for heavy lifting. Corrosion protection to all exposed and running surfaces for long life and suitable for use in marine environment of jacks. A strand jack essentially comprises the lifting cylinder and.
Crystal multipoint calibration procedure for stressing. The result is a durable, lightweight, and compact stressing jack. Dlt strand jack systems brochure dorman long technology home. Powerstress 25t lightweight mono strand stressing jacks. Telescopic strand guide tubes through the full height of strand jack to prevent buckling and birds nesting of strands inside of the jack.
Mono jack is the tensioning jack for single strand stressing, with strand. Hydraulic jacks threaded ram double acting general. Crystal multipoint calibration procedure for stressing jacks glrco1 1. In a strand jack, a bundle of steel cables or strands are guided through a hydraulic cylinder, above and below the cylinder are anchor systems with wedges that grip the strand. Mcmillan engineering group can design and manufacture a multi strand jack to suit. For use with smaller strand, jack grippers of diff erent sizes are available. A strand jack is a system similar to a jack, however in this case the load is not pushed up, but the jack pulls up a bundle of wires, which is called a strand. Strand jacks are mainly used with towerlift system. China high tonnage heavy duty lifting strand jack china strand. The language has been changed due to your browsers language settings. C viii 0 1014 c viii 0 1014 strand lifting can be used to lift or lower almost any load, regardless of its height.
Other strand jack systems usually have the strands hanging free from the jack instead of being coiled as shown. The most common form is a car jack, floor jack or garage jack. A mechanical jack employs a screw thread for lifting heavy equipment. Olmsteds system keeps the strands coiled and only allows the length needed for each lift to be deployed. Grippers special wedges used in the single strand jack to hold the strand during the stressing operation. Pdf a heavylift scheme has been developed for the erection of the 88 m long steel. A strand jack is a specialized hydraulic jack that grips steel cables.
These attributes make the 6dahseries the jacks of choice for elevated construction projects. Slide the jack forward to release the jack grippers and remove the jack from the strand. Pjm industrial offer 10t, 25t and 30t mono strand prestressing jacks or pre stressing jacks. Strand jacks the strand jack lifting technique originates from the concrete post tensioning principle think of it as a linear winch. The strand jack lifting technique originates from the concrete post tensioning principle. Pre cast deck should be launch by strand jack or rr hydraulic.
Stressing equipments is an essential part of post tensioning prestressed concrete work. This is particularly true when heavy loads need to be moved. Do you have a job that requires a specific capacity. However, a ptc crane is far more versatile and efcient and can be used for many lifts during a project. A jack is a mechanical lifting device used to apply great forces or lift heavy loads. Enerpac strand jacks are the strand jacks of choice for customers seeking precise synchronous control with heavy lifting capacity in an economical. Is it possible to toggle a different kind of sprite selection. A strand jack is a hollow hydraulic cylinder with a set of steel ropes the strands in the name passing through the open centre, each one passing through two clamps one mounted to either end of the cylinder. Sliding gantries operate more slowly, move on skid shoes, and use strand jacks for lifting. China wholesale 60600 tons hydraulic strand jack system, find details about china strand jacks lifting, strand jack lifting system from.