Product Description
Front clamp jack operation relies on hydraulic drive and unique clamping structure. After starting, hydraulic oil is pressed into the cylinder to push the piston forward. The clip holds the steel strand firmly in advance, and with the displacement of the piston, the steel strand is stretched and the prestress is generated. The jack has a sensitive pressure feedback system, which can accurately control the tension process according to the preset value, and maintain the pressure holding state after achieving the target prestress to ensure the effectiveness of prestress. After the completion of the tensioning operation, the oil return makes the piston reset, and the clip releases the steel strand. The scientific and reliability of the principle makes it indispensable in the prestressed projects such as Bridges and buildings, and effectively guarantees the quality and safety of the engineering structure
Product Parameters
Item |
Unit |
Value |
Nominal tension |
KN |
257 |
Nominal oil pressure |
MPA |
50 |
Tension piston area |
M2 |
5.137*10 |
Return piston area |
M2 |
1.335*10 |
Piercing hole diameter |
MM |
19 |
Trolley trip |
MM |
200 |
Dimensions |
MM |
180*568 |
Return oil pressure |
MPA |
Less than or equal to 25 |
Product structure
Prestressing jack is one of the indispensable and important tools in the tension anchorage construction of Prestressing bridge project. No Prestressing jack of any kind is a panacea. Prestressing jack structure, structure size and tension tonnage limit its range of use. Prestressing Mono jack is a kind of multi-purpose prestressed tension equipment. Prestressing Mono jack is mainly used for single-hole tensioning, and can also be used for porous prestressing, tensioning and drainage. Prestressing Mono jack is suitable for a variety of specifications and sizes of high-strength steel wire and steel strand.
Prestressing Mono jack is suitable for stressing single hole tension, group anchor by root tension, troubleshooting, withdrawing anchor, filling tension. As far as Prestressing strand wire strength is concerned, you can stretch the following 2000 grade Φ15.24 steel strand, Φ12.7 steel strand, if you replace/unload the parts, you can stretch the fine rolled screw rib (customer put an order) rebar and so on.
Prestressing Mono jack is small, light weight and high efficiency. It is important to note that the reserved length of the kilo-card strand is short (about 260mm). It is especially suitable for high altitude or small space location.
Prestressing Mono jack is used with double circuit oil pump 63Mpa and above.
Applications
The front clamp jack is mainly used in the field of prestressed engineering.
In bridge construction, it is used for the construction of prestressed beam bodies of all kinds of Bridges, such as prestressed concrete box beams, T beams, etc. When the steel strand is stretched, the front clamp jack can accurately apply prestress, enhance the bending and cracking resistance of the beam body, and ensure the safety of the bridge structure when bearing loads such as vehicles.
In construction engineering, it is suitable for the production of prefabricated components. For example, prestressed tensioning of prefabricated floor slabs, prefabricated piles and other components can improve the bearing capacity and durability of components and reduce the deformation of components during use. At the same time, it is also used for the prestressing construction of the main structure of the building, such as the application of prestress in the long-span concrete structure to ensure the stability of the structure.
In geotechnical anchoring, the front clamp jack is used to stretch the anchor cable. In the engineering of slope reinforcement and deep foundation pit support, the unstable rock and soil body is connected with the stable stratum by applying prestress to the anchor cable, which can effectively prevent the sliding and collapse of the rock and soil body and ensure the safety of the project.
Company Profile
Packaging & Shipping
FAQ
Q1: Warranty terms of your machine?
A1: One-year warranty for the machine and technical support according to your needs.
Q2: Will you provide some spare parts for the machines?
A2: Yes, of course.
Q3: What about the voltage of products? Can they be customized?
A3: Our standard voltage is 380V, 50HZ, and 3phase. The voltage can be customized according to your equipment.
Q4: Which payment term can you accept?
A4: 100% T/T( Decide according to actual situation)
Q5: How long will it take to arrange production?
A5: we can deliver the normal goods within 3-5 working days. Other nonstandard electrical items we will deliver within 25-30 days.
Q6: Can you accept OEM orders?
A6: Yes, with a professional design team, OEM orders are highly welcome.
Q7: Which trade term can you accept?
A7: Available trade terms: FOB, CIF, CFR, EXW, etc.