A low headroom electric wire rope hoist is a lifting device specifically designed for use in spaces with low building heights, maximizing the effective lifting height. Its core feature is its compact structure, which "compresses" the lifting mechanism (motor, drum, reducer) and traveling mechanism as much as possible within the trolley frame, allowing the hook to be very close to the overhead rails or the lower edge of the I-beam in the factory, thus making full use of space.
Key Features and Advantages of Low Headroom Electric Wire Rope Hoists
1. Large Effective Lifting Height: This is the most crucial advantage. With a fixed factory height, it can lift hundreds of millimeters or even thousands of meters more effectively than ordinary wire rope hoists of the same tonnage, effectively "increasing" the factory height.
2. Compact Structure and Lightweight: Optimized overall design reduces unnecessary structural frames, saving steel and lowering the requirements for the factory's load-bearing structure.
3. Smooth Operation and Precise Positioning: Typically using a conical rotor motor or disc brake motor, it ensures smooth start and stop, and with a precision reduction mechanism, it can achieve millimeter-level precise positioning.
4. Modular design for easy maintenance: Key components such as the motor, reducer, and drum assembly utilize a modular design, facilitating disassembly, replacement, and maintenance.
5. Safe and reliable: Equipped with multiple safety devices, including overload protection, upper and lower limit switches, phase sequence protection, and emergency stop switches.
Main application scenarios for low-headroom electric wire rope hoists: The low-headroom design addresses space constraints and is therefore widely used in:
1. New factory buildings: Choosing low-headroom hoists during the planning and design phase allows for reduced building height while maintaining lifting capacity, saving on construction costs.
2. Renovation/upgrading of existing factories: When the factory height cannot be changed, but higher workpieces need to be lifted or larger tonnage equipment needs to be replaced, low-headroom hoists are the only option.
3. Space-constrained locations: Such as underground garages, tunnels, workshops with low ceilings, and hoisting passages between production lines.
4. Situations requiring extremely high lifting heights: Such as deep well excavation and access to large molds.
Low Headroom Electric Wire Rope Hoist Selection Considerations
Key Parameters of
Electric Wire Rope Hoists:
Lifting Capacity (tons): The maximum safe lifting weight required.
Lifting Height (meters): The maximum distance the hook needs to rise.
Working Class (M3-M6): Selected based on usage frequency and load rate.
Most Important Dimension: Hook Spacing (H₀). The smaller this value, the more significant the headroom advantage. Calculate based on the effective headroom height of your factory.
Operating Modes:
Fixed: Fixed installation at a single support point.
Single Girder Trolley Type: Moves left and right on a single I-beam.
Double Girder Bridge Type: Uses as a trolley for the crane, running on a double girder bridge, allowing for three-dimensional movement (forward, backward, left, and right).
Power Supply and Control System: Typically 380V/50Hz three-phase power. Control methods include push-button control, remote control, and cab control.
Brand and Quality: Choose reputable brands like Weihua Group, paying attention to the quality of the wire rope, the insulation level of the motor, and the reliability of the brake.
Certification and Compliance: Ensure products comply with national special equipment safety technical specifications and possess a special equipment manufacturing license and product certificate of conformity.
