Fixed-type chain electric hoists are increasingly being used in a wide range of everyday applications today. But do you know the history and true nature of these hoists? As early as the 1950s, Japan developed chain-type electric hoists and, leveraging its highly developed economy, integrated them effectively into crane-based material-handling operations, which spurred rapid advancements in the field. Subsequently, through continuous innovation and adaptation to the diverse needs of major markets, a variety of stylish and functionally advanced fixed-chain electric hoists were introduced, expanding their scope of application even further. Now, let’s take a closer look at an overview of fixed-chain electric hoists and a step-by-step user guide!

　　Product Structure and Features of Fixed-Style Chain-Driven Electric Hoists

　　1. Housing: The housing is made of magnesium-aluminum alloy, offering robust durability and lightweight construction. It features specially engineered heat sinks for enhanced thermal dissipation, ensuring reliable performance even during continuous operation without overheating or automatic shutdown. This design makes the device highly adaptable and suitable for use in a wide range of environments.

　　2. Side-magnetic braking: With the addition of a new magnetic generator, magnetic braking can be activated even when the power is turned off, providing safer and more reliable braking for heavier loads. 3. Limit switches: The hoisting mechanism is also equipped with limit switch devices that automatically shut down the system to prevent chain overtravel, thereby ensuring operational reliability.

　　4. Chains: All chains are made from imported alloy steel and undergo heat treatment for superior strength and durability, ensuring reliable performance in a wide range of harsh environments. They exhibit excellent resistance to corrosion from seawater, chemicals, rainwater, and other corrosive agents.

　　5. Hook: Forged by hot forging, it boasts high strength and is resistant to breakage. The lower hook can rotate 360 degrees and is equipped with a latch plate to ensure reliable operation.

　　6. Support Frame: The lifting support frame is constructed from two steel plates and is extremely robust;

　　7. Transformers: Transformer units rated at 24 V, 36 V, 48 V, etc. During operation, in the event of a leakage current, they can help prevent accidents and ensure maximum safety even in rainy conditions.

　　8. Electromagnetic contactors: Suitable for high-frequency operation and withstand high duty cycles.

　　9. Reverse Protection Device: For special electrical equipment, if the power supply wiring is incorrect, the control circuit will not operate;

　　10. Push-button switch: Uses a waterproof push-button switch that is lightweight and durable.

　　Overall Structure of a Fixed-Style Electric Chain Hoist

　　The stationary chain-type electric hoist is equipped with a high-rigidity steel plate support structure that bears the winding mechanism. On the right side of the chain hoist is the hoist motor, while the left side houses the braking device and gear assembly. To facilitate maintenance and servicing, the power supply and control box are mounted in plug-in compartments. The main support frame is constructed as an all-steel, non-welded monolithic structure, characterized by its light weight, simple appearance, high production efficiency, and ease of maintenance.

　　1) Circular chain

　　Due to the specific operating conditions and characteristics of chains—high-speed meshing with sprockets, frequent application of power loads—tensile strength, fatigue strength, toughness, and wear resistance are of paramount importance. Therefore, the materials used for chains must be alloy steels that retain sufficient toughness even after quenching (surface hardening) while also offering good formability, weldability, and resource efficiency. In addition, to ensure the chain’s balanced mass and safe, long-term service, all stationary electric chain hoists undergo a tensile test at 1.5 to 2 times the rated load before leaving the factory, thereby guaranteeing safe operation for users.

　　2) Brake

　　To accommodate high-speed, frequent operation, the high-speed chain electric hoist employs a dual-braking system consisting of a self-adjusting primary brake and an auxiliary brake integrated into the motor. The primary brake is activated when the power supply is cut off. This brake features automatic adjustment: as the brake wheel wears and the electromagnetic force increases, the adjusting lever automatically tracks the change; if the travel during tracking becomes excessive, the adjustment screw can be rotated to restore the brake to its original, normal setting. Should the primary brake fail, the auxiliary brake will ensure a constant-rate descent, preventing the suspended load from accelerating downward. This design incorporates a centrifugal-type brake—a compact, energy-efficient braking device that operates only under normal conditions and does not engage in abnormal descent.

　　3) Circuit

　　The manual pushbuttons for the control circuit are designed for 24 V low voltage and are housed in a drip-proof (water- and oil-resistant) enclosure to ensure reliability. In addition, when a three-phase power supply is used, if the phase sequence of the power connections is incorrect, the lift limit switch will fail to operate; therefore, a reverse-phase protection device has been installed. The principle is to use a phase-shifting circuit to detect the correct and reverse phases, and, upon detection of a reverse phase, to trip the control circuit via a relay.

　　It is a common lifting device used for handling heavy loads in both industrial and everyday settings. In response to market demand, we continuously develop new products that meet evolving needs, earning increasing favor among users. To ensure superior quality, we maintain strict quality control throughout the production process and have elevated after-sales service and maintenance to a new standard—so once you purchase a Xiongshi product, you can use it with complete peace of mind for a lifetime.