| Certification: | RoHS, ISO, CE |
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| Condition: | New |
| Automatic Grade: | Hydraulic |
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Working principle
The front clamping jack adopts the structural form of "static piston and moving cylinder body". When the prestress is applied, the jack piston and the tension weighing sleeve are stationary, the outer cylinder liner, the core sleeve and the tool anchor move backward relative to the jack piston, and the tool anchor and the tool clip clamp the steel strand for tension. After the required prestress value is reached, the oil is returned, the outer cylinder liner and the core sleeve are reset, and the working clip and the working anchor are automatically anchored to complete the tensioning process.
Installation and operation
In the jack installation process, first screw the tool anchor into the inner thread of the core sleeve and ensure that all threads of the tool anchor are evenly stressed. By rotating the tool anchor to make its hole position correspond to the hole position of the limit plate, the steel strand can pass through smoothly, so as to realize the simultaneous installation of the jack and the tool anchor and the rapid positioning. The tool anchor plate is close to the limit plate (about 150mm), which improves the concentric accuracy of the limit plate and the tool anchor after installation, avoids the entanglement of the steel strand in the jack, ensures the uniform force of the steel strand, reduces the incidence of slip and broken wire during the tension process, and improves the tension quality
| 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 |
The structure of the front clamp jack
The front clamp jack is a kind of tool specially used for the tensioning and anchoring construction of prestressed projects, and its structural design has unique advantages, which is suitable for a variety of scenarios such as single-hole tensioning, group anchor tensioning, troubleshooting, unanchoring, and additional tensioning. The following are the main structural features of the front clamp jack:
Structural characteristics
Double seal design: tension cylinder and return cylinder are double seal design, improve the reliability of the seal. The small cylinder and the second cylinder, the small cylinder and the rear end cover and the small cylinder and the tool ring are connected by keys to prevent rotation. The seal is made of Glay ring or Ster ring to ensure the sealing effect.
Integral two cylinder and piston head: The two cylinder and piston head are designed as one piece, avoiding the possibility of failure due to two body welding or two body threaded connection.
Improved wear resistance design: The wear ring and wear sleeve have been improved to avoid the possibility of assembly force out and improve the reliability of the product
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.
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