When using a lever chain hoist, it is necessary to strictly follow the four core links of pre operation inspection, operation standardization, post operation maintenance, and long-term safety management to ensure the safety and reliability of the equipment, efficient operation, and risk-free personnel. The following is a detailed summary of specific precautions:

1、 Comprehensive inspection before operation

Equipment status verification

Check whether the chain, hook, pulley, and braking device are intact, without cracks, deformations, excessive wear (if the chain wear exceeds 10% of the original diameter, it needs to be replaced), or broken wires.

Verify the reliability of the braking system (such as ratchet braking and friction pad braking): the sliding distance of the heavy object is ≤ 50mm, the braking time is ≤ 0.5 seconds, ensuring no risk of slipping or failure.

Test the flexibility of the handle, gears, and bearings to confirm that there is no jamming, abnormal noise, or excessive wear; Lubricating points need to be filled with an appropriate amount of lubricating oil to ensure smooth movement of moving parts.

Load and environment adaptability

Clearly define the rated load range of the equipment (such as 0.5 tons to 50 tons), and prohibit overloading for use; Verification is required through static load testing (125% rated load without permanent deformation) and dynamic load testing (110% rated load operation without abnormalities).

Evaluate the working environment: The temperature should be within the tolerance range of the equipment (such as low temperature resistance of -50 ℃ or high temperature resistance of 200 ℃), and avoid use in damp, corrosive media (such as salt spray, chemicals) or flammable and explosive environments, unless the equipment has the corresponding protection level (such as explosion-proof certification, anti-corrosion coating).

Confirm the lifting height, working range, and space limitations (such as selecting a short body model for low clearance scenarios and considering the need for long chain extension for port operations) to avoid collision with obstacles or exceeding the equipment's working range.

2、 Standardized execution during operation

Correct operation process

Before operation, it is necessary to wear safety protective equipment (such as safety helmets, gloves, and seat belts), and ensure that the operator holds a special equipment operator certificate and is familiar with the equipment structure, principles, and the "Ten No Lifting" principle (such as overloading, diagonal pulling, unmanned command, and not lifting explosive dangerous goods).

During lifting, it is necessary to maintain the stability of the heavy object and avoid shaking or impact; Fine lifting or positioning can be achieved through small movements of the handle, and sudden acceleration, deceleration, or emergency stop are strictly prohibited.

During operation, it is necessary to stand in a safe position and avoid being located under heavy objects or on the path of equipment movement; When collaborating with multiple people, clear command signals are required to ensure coordinated and consistent actions.

Dynamic security monitoring

Real time observation of the status of heavy objects. If any tilting, shaking, or abnormal noise is found, the machine should be stopped immediately for inspection, and the fault should be eliminated before continuing the operation.

Avoid diagonal pulling, horizontal pulling, or using equipment as dragging tools to prevent overloading and damage to chains, hooks, or braking devices.

It is strictly prohibited to repair, adjust or touch moving parts during the operation of the equipment. The machine must be stopped and the power supply (such as electric models) must be cut off before operation.

3、 Maintenance and upkeep after operation

Daily maintenance and cleaning

After homework, the surface of the equipment should be cleaned to remove dust, oil stains, or corrosive substances, in order to avoid affecting heat dissipation or electrical performance.

Check and replenish lubricating oil to ensure sufficient lubrication of moving parts such as gears, bearings, and brakes, and reduce wear.

When storing, it is necessary to choose a dry, ventilated, and non corrosive gas environment to avoid direct sunlight or humid environments that may cause equipment corrosion or aging.

Regular professional inspections

Regularly conduct comprehensive inspections (such as quarterly or semi annual), including measuring chain wear, testing braking performance, inspecting electrical systems (such as circuits, switches, motors), and verifying the functionality of safety devices (such as overload protection, emergency stop buttons).

When replacing worn parts such as chains, hooks, and brake pads, it is necessary to use original or standard accessories to ensure consistent equipment performance.

When not in use for a long time, regular no-load operation tests should be conducted to ensure that all components of the equipment function properly and avoid malfunctions caused by idle use.

4、 Long term safety management

Manufacturer support and training

Priority should be given to manufacturers with a comprehensive after-sales system to ensure pre-sales solution design (response time ≤ 2 hours), after-sales response (on-site arrival within 48 hours), and accessory supply guarantee.

Regularly participate in operational training, safety training, and emergency drills provided by manufacturers to enhance the safety awareness and emergency response capabilities of operators.

Compliance with regulations and standards

Strictly comply with industry regulations and standards (such as ISO 9001, CE, ASME B30, OSHA 1910.179, China TSG 07) to ensure that equipment design, manufacturing, use, and maintenance meet safety requirements.

Regularly conduct compliance reviews to ensure that the equipment has no major safety accidents or quality complaints, has passed ISO 14001 environmental management system certification, and complies with environmental regulations such as low emissions and recyclable materials.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment