chain hoist

Used for vertical translation (i.e., lifting and lowering) of loads. Frequently attached to cranes and monorails to provide vertical translation capability Can be operated manually, electrically, or pneumatically



A chain hoist is a mechanical device used for lifting heavy loads of objects and equipment. It is made with a pulley, which is held together by a closed chain. The closed chain in the chain hoist forms a loop, which makes it easy to be pulled by hand.
Chain hoists are typically electrically powered, but can be manually or pneumatically operated as well. In a chain hoist, the chain is attached to a lifting hook on one end and a drum wheel on the other. To lift, the crank turns the reel and wraps the chain around the spool, raising the load at the end of the hook.

There are several large and small pulleys located throughout a chain hoist. One large and one small pulley are situated on the same axle of the chain hoist. There is also a mobile pulley on the chain hoist that holds the load in place.

For the load to be raised with the chain hoist, the closed chain has to be pulled. When it is pulled, the large pulley draws in more chain than what is released by the smaller side. From here, the lifting process begins.

Although the history of pulleys is unclear, it is known that primitive methods were employed to move heavy objects around. One of the early attempts at a pulley system was the single fixed pulley, which failed because friction prevented the wheel from being turned. Rope pulleys, which were commonly used for pulling water out of wells and are still in use today, are thought to have been invented next.

There are three types of chain hoists: air, manual, and electric. The manual chain hoist and the air chain hoist are designed with reduction gears, hook pivots, and swivels. Suspended by a top hook, or by a push or geared trolley, these types of chain hoists move objects slowly and carefully while making height adjustments. The attached load is well secured so it can be left fixed without requiring a great deal of supervision.

The electric chain hoist, on the other hand, is generally used for lifting heavy-duty industrial loads. The electric chain hoist allows the user to pull from the side as well as vertically.

In industrial settings, chain hoists are most often used to lift items vertically. Chain hoists are available in multiple varieties; they differ by diameter, load capacity, line material, length, and maximum loaded line speed. Choosing the hoist that fits the needed specifications is important, because safety issues can arise if hoists are misused.

Benefits:

Chain hoists offer many benefits. First, metal chains are more durable than rope. In addition to their durability, roller or link chain hoists are popular because they are fairly simple and inexpensive. They also require a low level of maintenance and are able to survive high temperatures without suffering damage.














Electric Hoists:

Industrial hoists are widely used for lifting. They are generally inexpensive and reliable. They increase the safety associated with lifting and enable the movement of much larger unit loads than would be possible with many other economical lifting options. An electric hoist can be defined as a suspended machinery unit using wire rope or chain for vertical lifting or lowering of freely suspended unguided loads.

Because the primary reason cited for hoist failure is the failure to consider the duty environment of the hoist, it is useful to consider duty factors in the hoist selection process.

Applications :

Hoists are versatile and we supply a broad range to meet most applications from lifting of small and light objects to larger hoists for factories and areas where lifting of heavier objects is required.

latest trends of electric hoist:

The new XN electric chain hoist , is a compact, efficient hoist combining reliability with style, safety with performance, and high technology with modern design. The XN hoist is the most cost-effective and reliable solution for light to medium hoisting needs.

Packed with benefits, the XN hoist features technical excellence and quality, unmatched versatility, safety and reliability, and a lifetime support system.Each XN hoist is extensively tested before delivery, undergoing a dynamic load test using 125 percent of its rated capacity.

The hoists go through overload and reduced voltage electrical tests as well as operational tests. Each hoist is CSA certified and meets or exceeds international standards, including ASME B30.16.The XN hoist is ideal for a wide range of applications.

Versatility features include a manual or electric trolley with one or two-speed hoisting options, a 1/8 - 5 ton (125 - 5000 kg) capacity range, and a standard lift height of 10 feet (3 meters) with other lifts available.

The five and six pocket chain wheels are heat-treated and ground to a high tolerance, providing especially smooth lifting. The load chain is electro-zinc plated, heat-treated, and has a high tensile strength. The lifting hook is made of high grade steel and is provided with a safety latch.

Maximum reliability and safety features on the XN hoists include high quality disc brakes, optional upper and lower limit switches, and a friction type torque limiter that is integrated with the brake; ensuring the load is always stopped when the control button is released, even if the torque limiter slips. Efficient heat dissipation is achieved via its ribbed design.