Chinese jacks

What is a Chinese jack?

Chinese jack is a commonly used lifting equipment, mainly used for vehicle maintenance and upkeep. According to its structure and working principle, jacks can be divided into various types, such as rack jacks, screw jacks, hydraulic car jacks, and inflatable jacks.

How to use a car jack or Chinese jack?

The usage steps of the automatic car jack are as follows:

Firstly, choose the appropriate car jack lift: Select the appropriate jack based on the weight and type of the vehicle, ensuring that it can withstand the weight of the vehicle. Large or heavy vehicles should choose jacks with greater load-bearing capacity. Secondly, determine the appropriate position: there will be support points on both sides of the vehicle chassis near the wheels for the jack to contact. The lifting part of the jack must be supported on the chassis support point. Otherwise, it is difficult to fix the vehicle, and it is also easy to cause damage to the jack. Thirdly, fix the jack: Before using the jack, it is necessary to secure the vehicle to avoid instability and injury caused by being lifted. Use the support structure of a jack to fix it on the ground. Fourth: Check the maximum load-bearing capacity of the jack: The maximum load-bearing capacity of the jack needs to be confirmed before use to avoid damage to the jack or vehicle due to excessive load-bearing during the lifting process.

Fifth: Use a jack: Adjust the adjustable part at the upper end to press against the lifting force point, insert the matching iron pipe into the pump that can be pressed up and down, and then press the pump up and down. The jack can start lifting. Safely lower the jack: Lift the car to the sixth position. The wheels should be 5 centimeters off the ground. At this point, other objects can be used as appropriate for support. For example, using wood support to prevent the jack from malfunctioning and the car from suddenly falling and causing danger. After repairing the car, remove the wood and other supports, and easily move the oil return screw to lower the jack slowly.

Precautions for using a Chinese jack

Before using a car jack, the vehicle must be parked on a smooth road surface, the handbrake must be applied, and the vehicle must be put into first or reverse gear. Jack must be used on a hard and flat road surface. If it is a relatively soft ground, such as muddy or sandy roads, it is recommended to use a wooden board or stone slab under the jack before using it to reduce pressure and prevent the jack from sinking into the soft ground.

When using a jack, it is important to pay attention to the condition of the ground and try to choose a suitable ground for fixing the jack. If the vehicle is on a soft road surface, place a large and hard support object, such as wooden boards, bricks, etc., under the jack to assist in fixing the jack to the ground. Check the maximum load-bearing capacity of the jack: Each jack has its designed ultimate load-bearing value. Before use, it is necessary to understand the limit value to prevent accidents caused by insufficient support.