1. Purpose
Intelligent tensioning jacks, prestressed jacks, hollow jacks, bridge self-locking jacks, double-acting jacks (double-acting jacks) are mainly used for the overall tensioning of group anchors. The jack is simple in operation, reliable in performance, and saves steel strands. Jacks are mainly used in the construction of bridges and other projects in conjunction with products such as prestressed anchors and tensioning equipment. Especially in large-scale projects, it is easy to operate and control, and hydraulic jacks are designed with a safety pressure-retaining device, and a built-in pressure relief valve prevents overload to protect the jack for safe operation. The connection of the device uses high-pressure hose and threaded joints, which is fast to use and overcomes the shortcomings of rapid traditional joint oil leakage. It is mainly used for equipment installation in various industries such as power, construction, machinery manufacturing, mining, railway bridges, shipbuilding, etc. Lifting and disassembly operations.
2. How to use
1. If the amount of oil in the pump body is insufficient, you must first add working oil to the pump to work.
2. Estimate the weight and avoid overloading.
3. Determine the center of gravity of the lifting object and select the jacking point. At the same time, it must be considered whether the ground is soft or hard with strong wood to avoid the risk of falling when lifting.
4. After the jack lifts the heavy object, the heavy object should be supported with tough wood in time. It is forbidden to use the jack as a support to avoid the uneven load and the risk of dumping.
5. When in use, first connect the quick connector of the manual pump to the top, and then select the position, and tighten the oil drain screw on the oil pump to work. Loosen the drain screw and unload the cylinder.
Three, matters needing attention
1 If there is a blow-out phenomenon during use, you can first loosen the oil drain screw on the pump body, put the pump body upright and hit the air downward a few times, and then tighten the oil drain screw, you can continue to use.
2 When there is a load, never remove the quick connector to avoid accidents and damage to the machine parts.
3 This machine uses oil as the medium, and the maintenance work of the oil and this machine must be done to avoid siltation or oil leakage and affect the use effect.
4 For new or long-standing hydraulic jacks, because there is more air in the cylinder, the piston rod may appear a slight jump phenomenon when starting to use. The hydraulic jack can be reciprocated 2-3 times without load to eliminate the cavity The air inside. For long-term idle jacks, the hardening of the seals due to the seals not working for a long time, which affects the service life of the hydraulic jacks, so when the hydraulic jacks are not in use, the hydraulic jacks should be reciprocated 2-3 times a month without load .
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