ES 
EN Rope Hoist- Hottest Rope Hoist of Dongqi Hoist
A rope hoist is often referred to as a block and tackle and is comprised of a single rope being run several times between two sets of pulleys in a large block, each of which is typically fitted with a steel hook. As the loose end of the rope is pulled, it passes through the series of steps on the two pulleys. The passing of the rope through the pulley system increases the lifting or pulling power of the rope hoist while keeping the pulling force required to lift the weight very low. Originally manufactured with wooden blocks and pulleys working in concert with a hemp-type rope, modern versions often use metal blocks complete with plastic pulleys and nylon rope.
Long before electric hoists, when a heavy item required lifting, a rope was the tool of choice. Occasionally, the item was so heavy that a rope was tied to a horse or mule to provide the pulling power required to lift the object. Eventually, the block and tackle, or rope hoist, was invented and lifting heavy objects became much easier. By passing the rope back and forth between the two blocks on a series of stacked pulleys, the lifting power is greatly increased. The more passes the rope makes, the greater the lifting power of the rope hoist.
The one problem with the rope hoist is that the more lifting power the hoist has, the slower the lifting speed. With large block and tackle units, the load is often lifted only a small amount from each long pull of the rope. This can create a time-consuming lift if moving a very heavy object. By attaching the loose end of the rope hoist to a horse or mule, the load is easily lifted; however, the animal may have to travel a long distance to complete the lift. This can often create a space problem if there is not sufficient room for the animal to travel.
Besides vertical lifting, the rope hoist can also be used very effectively to tighten two objects together on a horizontal application. This is often useful when tying two posts together or when attempting to straighten a leaning post or barn timber. A rope hoist was often used to raise a wall section into position when building a barn or other large structure. This technology allowed a wall to be built on the ground and then hoisted into position by running the rope hoist up and over a beam and pulling the rope with a mule or horse.
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 |
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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
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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
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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
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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.
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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
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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.
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Please click for more information about Metalurgia Eléctrico De La Grúa.
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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 |
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| CB-1 manual hoist series:
1 ton, 1.5 ton , 2 ton , 3 ton , 5 ton, 10 ton
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CB11 series manual hoists： 1 ton, 1.5 ton , 2 ton , 3 ton , 5 ton, 10 ton
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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 |
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| 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 |
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| 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 | |
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| 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? |
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| 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 , |
Please click for more information about leaver hand hoists.
