4 post car lifts are commonly used heavy equipment in automotive repair and maintenance. When installed correctly, operated properly, and regularly maintained, they have a very high safety factor; however, improper operation or lack of maintenance can create safety hazards.

I. Core Design of Security Guarantees

1. 1. 1. Multiple locking mechanisms

         This is the most crucial safety feature of 4 post car lifts. The equipment is generally equipped with a mechanical self-locking structure (such as serrated locking teeth and safety pawls). If the power supply is interrupted during the lifting process, the platform will automatically lock at its current height, preventing sudden drops due to hydraulic leaks or other problems. Some high-end models also include hydraulic explosion-proof valves for double protection against accidents.

      2. Load-bearing redundancy design

         This is the most crucial safety feature of 4 post car lifts. The equipment is generally equipped with a mechanical self-locking structure (such as serrated locking teeth and safety pawls). If the power supply is interrupted during the lifting process, the platform will automatically lock at its current height, preventing sudden drops due to hydraulic leaks or other

      3. Anti-slip and limiting structures

         The surface of the lifting platform is designed with anti-slip patterns or fitted with anti-slip mats to prevent the vehicle from sliding after being lifted. It is also equipped with a height limit switch, which automatically cuts off the lifting power when the platform reaches the preset maximum height, preventing over-travel and damage to the equipment.

      4. Anti-slip and limiting structures

         Compared to two-post lifts, the four-post support structure is more symmetrical and distributes the load more evenly, providing greater stability when lifting heavy vehicles (such as SUVs and light trucks), significantly reducing the risk of platform tilting or shaking.

II. Key Factors Affecting Safety

1. Was the installation performed correctly?

   4 post car lifts have high requirements for the foundation. They must be installed on a concrete surface with sufficient strength and thickness, and securely fixed with expansion bolts. If the foundation is inadequate or the fixing is not secure during installation, the equipment may shift or overturn when lifting heavy objects.

2. Are the operations compliant with regulations?

   • Before lifting, ensure the vehicle's center of gravity is centered and the support points are precisely positioned on the load-bearing areas of the vehicle's chassis (avoid supporting on weak parts of the vehicle body);
   • Overloading during lifting is strictly prohibited, and no additional heavy objects should be placed on the lifting platform;
   • Personnel are prohibited from entering beneath the vehicle during the lifting process and before locking;
   • The mechanical lock must be released before lowering; forced lowering is strictly prohibited.
3. Was the maintenance performed promptly?
   • Regularly check the hydraulic fluid level and quality, and replace aging seals promptly to prevent hydraulic system leaks;
   • Inspect the locking mechanism for wear and tear, ensuring smooth engagement of the pawl and locking teeth;
   • Lubricate all moving joints to prevent jamming and ensure proper locking function;
   • If any abnormal noises, vibrations, or locking failures are detected, stop the machine immediately for inspection and repair.

III. Core Principles of Safe Use