In the daily operations of workers in Hefei Hardware Processing Factory, hand cranked jacks are widely used as mechanical lifting tools for lifting and shifting heavy objects. Their standardized use is the key to ensuring personnel safety, equipment integrity, and efficient operation. To eliminate safety hazards and ensure orderly operation, the following operating procedures must be strictly followed.

Before doing homework, it is necessary to make sufficient preparations. Operators need to receive professional training, be familiar with the structure and working principle of the jack, and wear protective gloves, anti smashing shoes, and other protective equipment. Choose a jack that matches the rated load based on the weight of the heavy object. Overloading is strictly prohibited, and shake the equipment once to check if it is stuck and if the components are intact. At the same time, clean up the debris in the work area and define a safe zone. If the ground is soft, a solid cushion block should be placed under the jack base to ensure a stable and centered placement.

In homework, precise and standardized operations are required. Place the jack directly below the center of gravity of the heavy object, ensuring that the top plate is in full contact with the heavy object to prevent slipping. When shaking the joystick, apply force at a constant speed to avoid excessive force or speed. During the lifting process, closely observe the status of the heavy object and the jack. If any abnormalities such as tilting or abnormal noise are found, stop working immediately. After the heavy object is lifted into place, it is necessary to use auxiliary pads to support it in a timely manner. It is strictly prohibited to rely solely on the jack for long-term load-bearing.

After completing the homework, do the finishing work well. Slowly shake the joystick to make the heavy object fall smoothly, clean the surface debris of the jack, add lubricating oil, fold the joystick and store it in a dry and ventilated place. At the same time, check for any damage to the equipment, keep usage records, ensure that the tools are in good condition, and prepare for the next operation. Standardizing the operation of hand cranked jacks can not only improve workshop efficiency, but also safeguard the bottom line of safety production.