Hydraulic jack lift must choose a hydraulic jack lift of appropriate tonnage capacity and ensure that the load-bearing capacity is not overloaded during lifting operations. Generally, the load-bearing capacity of the hydraulic jack should be greater than 1.2 times the weight of the object. The minimum height of the hydraulic jack should be suitable for easy removal. The minimum lifting height of the hydraulic jack should match the net clearance of the force application point at the bottom of the object. During the lifting process, when using cushion blocks to support the object, the lifting height of the hydraulic jack should be greater than the sum of the thickness of the cushion block and the deformation of the cushion block.
If multiple hydraulic jack lifts are used to lift the same equipment together, the same model of a hydraulic jack should be used, and the sum of the rated lifting capacity of each hydraulic jack should not be less than 1.5 times the weight of the equipment.
The hydraulic jack lift should be wiped clean before use, and each component should be checked for flexibility, damage, and oil leakage. When the jack is loaded, avoid removing the quick joints to prevent accidents and damage to the components.
A hydraulic jack should be placed flat before use, and should not be tilted. The bottom should be leveled to prevent the hydraulic jack from tilting or overturning due to unevenness of the foundation or load shifting. A tough cushion block or steel plate can be placed at the bottom of the hydraulic jack to increase the pressure bearing area, and to prevent accidents caused by sinking or sliding. Do not use oily wooden boards or steel plates as liners to prevent slippage and safety accidents when under load. The part where the heavy object is lifted must be a safe and solid area to avoid equipment damage.
When using a hydraulic jack, the heavy object should be raised partially first, and the hydraulic jack should be carefully checked for abnormalities before continuing to raise the heavy object. If the pad is uneven or insecure, or if the hydraulic jack is inclined or leaking oil, the hydraulic jack must be removed and the problem should be addressed before continuing.
In the process of lifting with a hydraulic jack lift, safety cushion blocks should be placed under the heavy object as it rises to prevent accidents caused by the hydraulic jack tilting or bursting oil pipe causing the piston to drop suddenly. When lowering the heavy object, gradually remove the cushion blocks outward, and the distance between the cushion blocks and the heavy object should not exceed the thickness of one cushion block to prevent accidents.
When the hydraulic jack lifts needs to be loosened, the return oil valve should be slightly opened to allow it to release slowly, and it should not be suddenly lowered to avoid damaging the internal bladder and causing damage to the oil cylinder.
If the lifting height of the heavy object needs to exceed the rated height of the hydraulic jack, cushion blocks should be placed under the heavy object lifted by the hydraulic jack. Lower the hydraulic jack, raise the bottom of the hydraulic jack, and repeat the lifting process until the required lifting height is reached.
A hydraulic jack lift cannot be used as permanent supporting equipment. Self-locking hydraulic jack lifts can be used for long-term support. If long-term support is required, a supporting part should be added under the heavy object to ensure that the hydraulic jack is not damaged.
A hydraulic jack cannot be used in environments with temperatures exceeding 80℃.
Hydraulic jack lifts and high-pressure oil pipes should be separated after the pressure is eliminated, and the dust cover of the joint should be screwed on.
The hydraulic jack lift should be stored in a dry and dust-free place. They are not suitable for use in workplaces with acid and alkali or corrosive gases, and should not be placed in outdoor areas exposed to sun and rain.