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Electric hoists represent their own machinery, strength, and toughness, while the stage is elegant, flowing, and soft, with conflicts and collisions between the two.

Customized And Waterproof Stage Electric Chain Hoist

Time：2025-02-02

Brief Explanation :

Stage electric hoists are valuable aids in building stage scenes and presenting performances. They play a crucial role in various settings, such as theaters, concerts, opera houses, dance venues, and

Category : W12 Stage Electric Hoist

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Product Details

The factory - out inspection of stage electric hoists is a crucial part in ensuring product quality and safety, and it usually includes the following aspects of inspection: Appearance and Assembly Inspection - **Appearance Check**: Examine whether the surface of the electric hoist is smooth, and check for obvious defects such as scratches, bumps, paint peeling, and rust. The surface coating should be uniform and firm, without phenomena such as blistering and peeling. - **Component Assembly Check**: Inspect whether the assembly of each component is correct and firm, and check for any missing or mis - installed components. For example, check whether the installation of the chain and wire rope is correct, and whether there is any twisting or knotting; check whether the connections of components such as the motor and reducer are tight, and whether the bolts are tightened. - **Label Check**: Check whether the electric hoist has clear and complete labels, including product model, specification, rated load, lifting speed, production number, production date, etc. The label should be fixed in a prominent position and not easy to fall off or become blurred. Electrical Performance Inspection - **Insulation Performance Test**: Use an insulation resistance tester to measure the insulation resistance of electrical components such as the motor and electrical control box to ensure that its insulation performance meets the requirements. Generally, the insulation resistance is required to be not less than a certain value, such as 0.5MΩ, to prevent safety accidents such as electric shock and electrical short - circuits. - **Grounding Test**: Check whether the grounding device of the electric hoist is reliable, and the grounding resistance should meet the relevant standard requirements, usually not more than 4Ω, to ensure that in case of an electrical fault, the current can be safely conducted to the ground. - **Electrical Parameter Test**: Measure the electrical parameters of the electric hoist, such as input voltage, current, and power, to ensure that it operates within the rated range. At the same time, check whether the starting current and operating current of the motor are normal to avoid over - load operation of the motor. - **Control Function Test**: Test various control functions of the electric hoist, such as whether the functions of lifting, lowering, stopping, inching, and speed - changing are normal. Check whether the safety control functions such as limit switches and overload protection devices are sensitive and reliable. When reaching the limit position or overloading, the electric hoist should be stopped in a timely manner. Mechanical Performance Inspection - **No - load Running Test**: Without load, let the electric hoist perform actions such as lifting, lowering, and moving left and right for multiple times. Check whether its operation is smooth, and check for any abnormal noises, vibrations, or jamming. Observe the operation of each component, such as whether the motor, reducer, chain or wire - rope transmission mechanism, etc. are normal. - **Load Test** - **Rated Load Test**: Load the electric hoist to the rated load and perform operations such as lifting, lowering, and running for multiple times to check its operating performance under the rated load. This includes whether the lifting speed meets the regulations, whether the braking is reliable, and whether there are phenomena such as overheating, deformation, and abnormal wear of each component. - **Overload Test**: Generally, conduct an overload test at 125% of the rated load. Keep the electric hoist in an overloaded state for a certain period of time (such as 10 minutes) to check its structural strength and braking performance. The electric hoist should be able to withstand the overload test without obvious deformation or damage, and the braking device should be able to brake reliably to prevent the heavy object from falling. - **Braking Performance Test**: Check whether the braking distance of the braking device of the electric hoist is within the specified range. Measure the braking distance of the electric hoist under the rated load and at different operating speeds. Generally, the braking distance is required not to exceed a certain value to ensure that it can stop in a timely manner in case of an emergency. - **Chain or Wire - rope Inspection**: Check whether the chain links are flexible, and check for any defects such as deformation, cracks, and wear. Check whether the elongation of the chain is within the specified range. For the wire rope, check for any broken wires, wear, and rust, and check whether the tension of the wire rope is uniform. Safety Performance Inspection - **Limit Device Inspection**: Check whether the upper and lower limit switches are sensitive and reliable. When the electric hoist rises or falls to the limit position, the limit switches should be able to cut off the power supply in a timely manner and stop the operation of the electric hoist to prevent accidents such as over - traveling or over - winding. - **Overload Protection Device Inspection**: Test whether the action point of the overload protection device is accurate by gradually increasing the load. When the load reaches the set overload value, the overload protection device should be able to quickly cut off the power supply, making it impossible for the electric hoist to continue lifting to avoid safety accidents caused by over - load operation.

- **Inspection of Other Safety Devices**: Check whether other safety devices of the electric hoist, such as the chain - breakage protection device and derailment - prevention device, are working properly. These safety devices should play a corresponding protective role in case of unexpected situations to ensure the safety of the electric hoist and operators.

Decomposition of stage electric hoist