When
choosing an electric hoist, you need to consider the use environment, load requirements, safety performance, and ease of operation. The following are key considerations:
1. Determine the load requirements of the electric hoist
Rated lifting capacity of the electric hoist: When selecting, it should be slightly higher than the actual maximum load (it is recommended to reserve 10%-20% margin) to avoid overload risks.
Working level of electric hoist (such as M3-M6): Select a high level (such as M5/M6) for frequent operations, and M3/M4 for intermittent use.
2. Lifting height and speed
Lifting height of electric hoist: Select according to actual needs, and ensure that the length of the wire rope/chain is sufficient (pay attention to the height under the hook).
Lifting speed of electric hoist: conventional single speed (such as 8m/min) or dual speed (fast/slow gear), precision lifting requires slow speed or frequency conversion control.
3. Power supply and environmental adaptability
Electric hoist voltage: common 380V (industrial use), 220V (small) or low voltage power supply (explosion-proof occasions).
Electric hoist operating environment conditions:
Humidity/dust: Choose an electric hoist with a protection level of IP54 or above.
High temperature/low temperature: Confirm the temperature resistance range of the motor and materials.
Corrosive environment: Choose stainless steel or anti-corrosion coating models.
Explosion-proof requirements: Look for explosion-proof certifications such as Ex dⅡBT4/CT4.
4. Installation method and structure
Fixed electric hoist (such as I-beam rail, fixed bracket) or running electric hoist (with trolley, can move horizontally).
Wire rope vs. chain:
Wire rope electric hoist: suitable for large tonnage (1-100 tons) and long lifting height.
Chain electric hoist: small size, light weight, suitable for 0.5-20 tons and narrow space.
5. Safety configuration
Required functions:
Overload protection device
Upper and lower limit switches
Emergency brake system
Phase protection (to prevent power phase loss)
Additional options:
Frequency control (to reduce impact)
Remote control (remote control)
Dual brake system (heavy load safety redundancy)
