Chain block | Chain block from Dongqi, Chinese chain block manufacturer & supplier

Chain block make your lifting easy, efficient and affordable

Chain block

Manual chain hoists are commonly known as chain blocks and are designed for heavy duty lifting and materials handling operations. Chain blocks raise and lower loads by pulling on the hand chain. Chain blocks can be of single or double fall configurations depending on the capacity of the block.

Construction and warehouse workers use manual chain blocks to lift heavy loads manually.  These pulleys, also called manual chain hoists, are capable of lifting varying weights, depending on the type and model chosen for the job.  Manual chain blocks are designed with a thick steel hook at the top of a thick steel square.  Wrapped around the square several times is a steel rope, which serves as the pulley chain for lifting the load.  A second steel hook is attached to the end of the chain.

There are three main types of hand chain hoist available which are:

1. Hook suspended which is a hoist with hooks top and bottom.
2. The hoist unit fitted with a push travel trolley(manual trolley), which enables manual movement up and down a beam.
3. A hoist with a geared trolley integrated in to the hoisting unit, which via the pulling of a chain drive the trolley can glide up and down a beam with the utmost ease.

We also offer a range of completely stainless steel hand chain blocks which are not presently advertised online though we will be adding them to our web site shortly.

When choosing a manual chain block model, workers must consider the size of the load they’ll be lifting.  Since chain blocks are sold in different sizes, it may be advantageous to choose a size or two larger than what is needed for the immediate job.  This will allow construction workers to accommodate larger loads if it becomes necessary in the future.

Inspection before use

Ensure that the chain block name plate and WLL is clearly visible and legible.

The pre-use inspection for a chain block should include the following:

Load chain

• Inspect chain for wear.
• Inspect chain for gouges, nicks, arc burns, twisted & bent links and corrosion.
• Inspect for correct reeving on multi-reeved units (3 and 5 tonne).

Lift wheels & Sheave wheels

• Inspect lift wheel for foreign material, wear and corrosion.
• Inspect dead end pins for wear, tightness and corrosion.

Hooks

• Inspect hooks for signs of opening, cracking, bending, arc burns and corrosion.
• Hooks should swivel freely.
• Inspect safety latches for condition & operation.
• Measure the hook throats for allowable service openings.

Hand chain

•  Inspect chain for wear.
• Inspect chain for twisted or gouged links and corrosion.
• Inspect connecting link for signs of opening.

Miscellaneous

• Inspect frame and covers for distortion, cracks, gouges, corrosion & other damage.
• Inspect hangers (3 and 5 tonne) for cracks, gouges, corrosion & other damage.
• Inspect unit for clear WLL identity.

Crane during operation  

The use of manual chain blocks calls for careful attention to safety precautions.  As a general rule, warehouse workers are urged to use basic safety gear such as work boots and safety goggles when operating a manual chain block.

• The load chain must always mesh correctly with the load sheave. With multi fall chain blocks twists can arise by turning over the bottom hook through the load chain.
• Regularly lubricate the whole length of the load chain with machine or gear oil but be careful not to over lubricate as oil or grease on the brake discs can cause the brake to malfunction and slip.
• Confirm that the brake is functioning properly by hoisting the load 100mm and check the brake when lowering the load.
• Non-vertical (sideways pulling) of the hand chain is not recommended on our chain blocks.
• The hand chain is equipped with a safety link. When the safety link opens or deforms, stop at once and inspect for the cause.
• Confirm that the monorail beam or structure supporting the chain block is of sufficient strength to support the load to be lifted.
• Never lift loads in excess of the WLL of the chain block.
• Never walk or work under a hoisted load and never lift, support or transport people.
• Use chain blocks manually only.
• Do not permit more than one operator to pull on the hand chain at one time.
• Lift loads correctly with proper slings and attachments. Never lift with the point of the hook and never use the load chain as a sling by back hooking.
• Lifting a load with two chain blocks is not recommended. If the operation is unavoidable, hoist the load with utmost care, keeping the load balanced.
• Never run the load chain out too far. When operated beyond the range of lift, an excessive load that can cause damage will be imposed on the chain block.
• Chain blocks are designed for lifting loads vertically and should not be used for horizontal or angle hoisting.
• Extreme temperatures will reduce the durability of the hoist. Loads should be hoisted or lowered very slowly and carefully in extreme temperatures.
• In addition, operators should carefully inspect the chain block prior to each use.
• Workers should also inspect the hook to make certain that the hook is solidly fixed to the load before attempting to lift it.
• Most manual chain blocks are equipped with safety catches to prevent injury from chains slipping during use.  If the chain block has this feature, the operator should make sure the catch is completely closed before using it.  After use, workers should store the manual chain block according to the manufacturer’s instructions.
• Never leave a load hanging on the hoist.
• Never use the chain or hook as a ground for welding.

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.