1-80 ton Electric Crab Hoist | Low Headroom Electric Hoist for Double Girder Crane

DQCRANES, by virtue of its advanced technology and rich industrial experience, developed the DH series of Wire Rope Electrical Hoist with multiple patents on the basis of customer’s requirements and the modular design concept. It adopts the trendy C-type design, rendering compact structure, smooth running, and precise positioning. Besides, the adoption of various new technologies including frequency-converting control, braking energy recovery and safety monitory system made the DQCRANES’ Wire Rope Electric Hoist take the lead in the industry. DH Wire Rope Electric Hoist provides you with better logistics solution, ensuring reliability and safety for equipment operation.

DQCRANES’ DH series of Wire Rope Electric Hoist with lifting capacity ranging from 3.2t to 63t, can be categorized as fixed type, single girder suspension type and double girder travelling electric type by their different structures and as general hoist, dedicated clean room hoist, explosion-proof hoist, dedicated nuclear plant hoist and other types of electric hoists by their occasions of application. DH Electric Hoist with compact and simple structure, modular design and diverse combinations is your ideal choice for light, medium and heavy duty transportation and will satisfy your requirements of various working conditions.

DH Series Low Headroom Electric Hoist for Double Girder Crane

Advantages of the DH Series Low Headroom Electric Hoist:

1. Pole changing double-speed motor hoisting with Three-in-One structure, Stable and reliable operation, small volume
2. Highly efficient electric motor with hard tooth surface reducer, to achieve the low energy consumption and large output torque
3. The electromagnetic brake can adjust itself automatically with high precision, to achieve fast and reliable braking with low noise.
4. The steel wire rope with high strength and high flexibility, to achieve greater and safer lifting.
5. High strength nylon rope guide and pulley, its self-lubricating help to achieve a longer service  life of the steel wire rope
6. High strength alloy wheel group, to achieve a long service life for the wheels.
7. Modular design to realize the flexible combination
8. The maximum lifting capacity of the single-girder is 20 t, the maximum lifting capacity of the double-girder can reach to 63 t

Range of application

Machine processing, steel production, material supply or any other lifting and handling occasions.

DH Series Low Headroom Electric Hoist for Double Girder Crane

Performances of the Low Headroom Electric Hoist:

Hoist general
Lifting capacity : 3.2t-63t
European optimized design, light dead weight
Silent operation
Low hoist frame reduces the height of building and saves construction cost
Modern integration design which combine motor together with fan, reducer, rope drum and brake, compact structure
Optimum cooling with good cooling performance, cooling is improved up by 30%, resistant to a temperature rise of 170 ° C
Ambient temperature:  -10℃ – +40℃
Epoxy zinc-rich painting for one bottoms and two sides of 120μm thick, to achieve a long lifespan, beautiful appearance and good luster

DH Series Low Headroom Electric Hoist on Double Girder Crane

Lifting motor
Asynchronous squirrel cage motor (Synchronous speed reaches up to 3000rpm)
Two-speed pole changing or frequency conversion for stepless speed control
Heavy duty, cyclic duration: 60% ED
Protection class: IP54, Insulation class: F

Lifting Reducer
Aluminum shell, light dead weight and good sealing condition
Semi-fluid grease lubrication, life cycle design, maintenance free
Helical gear with hard tooth face

Lifting brake
DC Electromagnetic disc brake
Self-adjusting brake pad, self-compensation wear, alarm when the brake pad is not thick enough

Excellent integration design of the regular closed brake and motor with good synchronization. Safe braking torque (at least 1.8 times) can effectively prevent the hook from slipping.
Fully covered, dust proof
Heavy duty
Large Frictional contact area, adjustable brake toque
Asbestos-free and environmentally friendly friction piece
Brake lining life: not less than 1 million times under normal use, emergency braking is not lower than 500 times

Rope Drum
Large diameter rope drum, Diameter(rope drum)/ Diameter(Steel wire rope) =46, to extend the rope’s lifetime
Ensures accurate load positioning, hook drift +/- 4mm per meter
At least two rings of rope are around the drum while the hook is at the lowest position
Rope guide is made of spheroidal graphite cast iron, with wear resistant and heavy-duty
A spring operated guide roll in the rope guide to prevent the steel wire rope from going out of the groove effectively

Steel Wire Rope
High tensile steel wire rope, breaking force can reach to 2160N/mm2
Galvanized steel wire rope, maintenance free
Hook
DIN 17200 standard Hook, quenched and tempered steel 34CrMoV
Anti-friction bearings with life cycle lubrication, 360°rotation
Safety lock is to prevent the hook from releasing

Protection Function
Overload protection: The hook will go down and be forbidden to go up to ensure the load to fall to the ground safely when the overload occurs.
Lifting limit switch: 4-step adjustable geared rotating limit switches, automatic resetting, slow down before stopping, accurate phase sequence control
Mechanical anti-collision device: rubber buffer block, efficient energy absorption
Wireless anti-collision limit switch: Infrared induction limit, sensitive and reliable
Overheating protection: Equipped with thermistor, the lifting motor has a good protection function from overheating
Braking safety protection: electric braking + mechanical brake

How to inquiry the DH Series Low Headroom Electric Hoist

Please leave your inquiry at below, or send your it to [email protected], we will reply you at 6 hours.