Hoist: Chain hoist or Wire rope hoist

HOISTS

A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain
wraps. Cranes and Hoists are somewhat interchangeable terminology since the actual lifting mechanism of a crane is
commonly referred to as a hoist. Hoists may be integral to a crane or mounted in affixed position, permanently or
temporarily. When a hoist is mounted to a trolley on a fixed monorail, two directions of load motion are
available: forward or reverse, up or down. When the hoist is mounted on a crane, three directions of load
motion are available: right or left, forward or reverse, up or down. Figure below shows a rope hoist for
double girder crane application.
Fig- Double Girder Crane Hoist
The majority of hoists used in the United States are classified as Standard or “packaged hoists”, typically
defined as largely self contained units, prepared to be installed on existing structures.

Hoist Lifting Media

There are two basic hoist lifting media – polipasto de cable which is very durable and will provide long term,
reliable usage and the other type of hoist is the Chain Hoist.

For a given rated load, wire rope is of lighter weight per running foot but is limited to drum diameters far
large than the lift wheel over which chain may function. Therefore a high-performance chain hoist may be
of significantly smaller physical size than a wire rope hoist rated at the same working load. High speed
lifting (60 ft/min +) requires wire rope over a drum because chain over a pocket wheel generates fatigue
inducing resonance for long lifts.

Which hoist is better – Chain hoist or Wire Rope hoist

Chain Hoist

Chain hoists are used for lower capacity, lighter duty applications and for projects in which cost is a
primary deciding factor. Chain hoists are mainly used for maintenance tasks. The main reasons for
choosing a chain hoist are the following:
1) Possible to change height of lift by changing the chain (versatile)
2) Compact design (no drum, which saves space)
3) Portable and can tolerate greater levels of abuse
4) Usually more economical than a wire rope hoist
5) Provide true vertical lift at no extra cost
6) Capacity up to 5 tons (up to 20 tons for some makes)
Chain hoists do, however, have certain inherent inconveniences, such as
1) Limited lifting speed
2) Noisier operation than a wire rope hoist
3) May be problematic at a height of lift of over 20ft (6 meters)
4) Space taken by the chain or chain container

Wire Rope

The wire rope is a piece of equipment that is used mainly for production tasks. The main reasons for
choosing a wire rope hoist are the following:
1) Very fast lifting speeds than a chain hoist
2) Quieter than a chain hoist
3) No room taken up by chain or chain receptacle
4) Recommended for considerable long lifting height
5) Very smooth lifting operation such as handle glass panel
6) Heavy Safe Working Load up to 25 tons
Both wire rope and chain hoists available in market today are rugged and durable products. A good load
chain can lasts up to 30 times longer than standard wire rope, it greatly reduces the down time and  operational costs. Duty ratings stated in various standards (HMI/DIN / FEM) are a better indicator of the
durability of hoist type (chain or wire rope). Therefore, when purchasing a crane, focus on lifting speeds,
headroom and features, less on the type of hoist.

overhead hoist Power Application

Three methods of applying power for overhead hoists:
1) Manual – By hand Chain
2) Electric – The most common power source application
3) Pneumatic – Often required in applications of high speed, higher duty cycle involving rapid, repetitive
tasks or hazardous areas where electric power is inadvisable.

HOIST SELECTION FACTORS

To select the proper hoist, consider:

1) The weight of the load to be lifted including below-the-hook lifting,
load supporting, and positioning devices.
2) Physical size of the load.

• Holding and orienting devices.
•  Design for center of gravity (control & stability).
•  Lift – the vertical distance the load can be moved.

3) Clearance Considerations

•  Headroom
• Obstacles to be cleared during the load transfer.
•  Design for vertical lift required including holding device height.

4) Lifting Speed Considerations

•  Distance the load is to be raised and lowered
• Frequency of usage
• Required positioning accuracy
•  Nature of the load being lifted

5) Hoist duty Cycle Considerations based on:

•  Number of lifts per hour
•  Total number of lifts per shift
•  Maximum number of starts and stops per hour
• Number of shifts per day
•  Average distance load is raised and lowered
•  Average weight to be lifted
•  Maximum weight to be lifted
•  Frequency of lifts with maximum weight.

Hoisting equipment offering of Dongqi

Various tipos de polipastos are provided by Dongqi Group, the following list will give you a general introduction of Dongqi Hoists. Please contact us to select the right Hoists and lifting equipment for you application.

la cadena eléctrico de la grúa

The electric chain hoists can be used to handle material with the lifting capacity of 0.5 ton to 35 ton, lifting height of 3 to50m, with the working class of M3 and M4. Hoistdq offers you various types of electric chain hoists to solve you material handling solutions.

DHS Series Electric Hoists,	TCH de la serie de la Cadena Eléctrico de la Grúa	DHP serie de Polipastos Eléctricos de Cadena
DHS Series Electric Hoists:1 ton, 2 ton, 3 ton, 5 ton,10 ton	TCH series Chain Electric Hoist：1 ton, 2 ton, 3 ton, 5 ton,10 ton	DHP series Chain Electric Hoists：1 ton, 2 ton, 3 ton, 5 ton,10 ton

Más información acerca de La Cadena Eléctrico De La Grúa, please click.

Wire rope electric hoists

Polipastos eléctricos y polipastos eléctricos - alambre de cuerda de una sola velocidad cuerda de alambre eléctrico de la grúa single speed 0.25 ton, 0.5 ton, 1 ton, 2 ton, 3 ton, 5 ton, 10 ton, 16 ton

Please click for more information about Wire Rope Electric Hoist.

Doble velocidad de polipastos eléctricos

Dongqi Hoists can provide you double speed electric hoists with the lifting capacity of 0.25 ton to 32 ton. Wire rope electric hoist double speed 0.25 ton, 0.5 ton, 1 ton, 2 ton, 3 ton, 5 ton, 10 ton, 16 ton

Please click for more information about El Doble De Velocidad Eléctrico De La Grúa.

Europea polipastos eléctricos

Europea eléctrico de la grúa is a newly developed material handling equipment with advanced design technology according to the FEM standards, European hoist standards and other regulations. The lifting capacity of the European electric hoist is 1 to 80 tons and the working class is M5 and M6.

Please click for more information about Europea Eléctrico De La Grúa.

Dongqi Hoists can provide explosion proof hoists with the lifting capacity of 0.25 ton to 63 ton, and the lifting height of 1 m to 100m, with the working class of M3. What’s more, single speed explosion –proof hoists and double speed explosion-proof hoists. And, customized explosion proof hoists are available.

Please click for more information about A Prueba De Explosión Eléctrica De La Grúa.

Metalúrgico, eléctrico de la grúa

Metalúrgica de la grúa ofrecidos por Dongqi tiene una capacidad de elevación de 1-10ton, altura de elevación 9-30, la clase obrera de M6. Y personalizado metalurgia polipastos de industrias metalúrgicas están disponibles.

Please click for more information about Metalurgia Eléctrico De La Grúa.

mini electric hoist

Mini electric hoist single hook 100 kg , 125 kg, 150 kg, 200 kg, 250 kg, 300 kg, 400 kg, 500 kg Mini electric hoist with double hook 200 kg, 250 kg, 300 kg , 400 kg, 500 kg electric hoist The lifting speed of the mini or small hoists can be up to 10 m/min.

Please click for more information about Mini Polipasto Eléctrico?.

Manual hoist and hand hoist

Manual hoist and hand hoist is a type of light hand operated hoisting equipment, which solves the material handling problems with man power, with the features of easy operation, cost-effective, wide application, etc. Dongqi Hoist offers types of manual hoists or hand operated hoists, such as, manual

Manual hoist – Chain type

CB-1 manual hoist	CB-11 manual hoist,	VC-B manual hoist
CB-1 manual hoist series: 1 ton, 1.5 ton , 2 ton , 3 ton , 5 ton, 10 ton	CB11 series manual hoists: 1 ton, 1.5 ton , 2 ton , 3 ton , 5 ton, 10 ton	VC-B manual hoist: 0.5 ton 1 ton ,1.5 ton, 2 ton, 3 ton, 5 ton, 10 ton, 20 ton, 30 ton, 50 ton ,

CK type manual hoist	SK Series of manual hoist	HS-T type manual hoist
CK type manual hoist 1 ton, 1.5 ton , 2 ton , 3 ton , 5 ton , 10 ton , 20 ton,	SK Series of manual hoist 0.5 ton, 1 ton , 1.5 ton , 2 ton, 3 ton , 5 ton , 8 ton , 10 ton, 16 ton , 20 ton	HS-T series of manual hoist 0.5 ton, 1 ton , 1.5 ton , 2 ton, 3 ton , 5 ton , 8 ton , 10 ton, 16 ton , 20 ton,

HS-C type series manual hoist	HS-Z type series manual hoist
HS C Series of manual hoist 0.5 ton, 1 ton , 1.5 ton , 2 ton, 3 ton , 5 ton , 20 ton,	HS-Z series Series of manual hoist0.25 ton,? 0.5 ton, 1 ton , 1.5 ton , 2 ton, 3 ton , 5 ton ,10 ton , 15 ton, 20 ton ,30 ton,

Please click for more information about manual chain hoists.

Manual hoist- explosion-proof type
Explosion proof hand hoist 0.5 ton, 1 ton,2 ton, 3 ton , 5 ton , 10 ton, 20 ton	VN explosion-proof manual hoist t 0.5 ton, 1 ton , 1.5 ton , 2 ton, 3 ton , 5 ton , 10 ton, 20 ton, etc

Please click for more information about manual chain hoists.

Manual hoist and hand hoist – Lever type

VC-A series lever hoist	VA series hand hoist	VD type lever hoist?
VC-A series manual hoist 0.5 ton, 1 ton, 1.5 ton, 2 ton , 3 ton , 5 ton , 10 ton , 20 ton , 30 ton, 50 ton ,	VL lever chain hoist 0.5 ton ,0.75 ton ,1 ton , 1.5 ton, 2 ton , 3 ton, 6 ton,	VD type lever 250 kg, 500 kg , 750 kg, 1500 kg , 2500 kg ,3000 kg, 5000 kg, 60000 kg ,

Wire rope lever hand hoist

Please click for more information about ?leaver hand hoists.??