Aluminum Shell Hoist

A hoist is a machine specifically designed to raise and lower loads that are too heavy for manpower alone. Hoists have a drum or wheel around which wraps either a chain or rope that controls whether the load is raised or lowered. Some hoists lift a lot of weight (over 50 tons!) and some lift fewer than 100 pounds. Our aluminum shell hoists come in all shapes and sizes.

Features of Aluminum Shell Hoist

1. The high-strength aluminum alloy shell is formed in one step using gravity casting technology. The shell has a compact structure, light weight, small size, and the surface is treated with matte electrostatic spraying.

2. High-strength PVC chain bag is used, which is designed for inverted use.

3. The hook can rotate 360° up and down and is equipped with a safety lock.

4. The rotating handle is made of high-quality round steel, which is durable and will not rust.

5. European waterproof aviation plug.

6. The electric hoist is designed for upright or inverted use without modification.

7. Built-in adjustable limit switch can automatically stop at any predetermined position when the hoist is used up or down (optional).

Lifting Motor

The hoist has a cylindrical short-circuit motor with an incorporated electromagnetic brake. The motor and brake have been designed for continuous service with high duty factors and cycles. The brakes are electromagnetic disc, with asbestos free flat faced linings. They offer great reliability and automatic braking in the event of power failure. The friction linings are long lasting and the brake is easy to regulate.

Gearbox

The helical teeth in all the gears are cut with great precision, in cemented steel, assuring silent running, great reliability and long life. The drive from the motor to the gearbox is direct, avoiding coupling devices which have a tendency to fail. All of the gears are lubricated by an oil bath in the interior of a closed casing, machining of the gear locations is made by high precision machine tools.

Drum & Rope Guide

The drum is designed and manufactured according to FEM 966 standard. Constructed from a seamless steel tube with grooves machined according to DIN 15061. The groove is machined depending on the wire rope exits i.e. 1 or 2 exits. The drum is fitted to the hoist frame using high quality, self lubricating, commercial bearings. The drive from the gearbox to the drum is via a direct splined shaft. The rope guide is manufactured from GGG 70 nodular cast iron with self lubricating graphite, which also gives particular resistance to wear.

Overload Limit Device

All of our hoists are fitted with an electro-mechanical load cell as standard (electronic control). This load cell consists mainly of 2 parts:

• An electronic cell pin.
• Load cell unit (to be installed in the electric panel).

Limit Switch

It is located in the drum axle. It limits hook movement in the up and down motions. All of our hoists are fitted with a security limit switch in lifting, preventing a possible failure of the main limit switch.

Generally, a wire rope hoist will be more expensive than the more common chain hoist. But they also have a few advantages over the chain hoist, including the ability to lift heavier loads, lift loads higher, speed, precision, and flexibility in motion, and many additional special features.

1. High lifting capacity - a wire rope hoist is capable of lifting substantial loads.
2. High lift heights - need to lift your loads really high? Choosing a chain hoist may limit your lift height.
3. Durability in hot or harsh environments - wire rope hoists typically fare better than a chain hoist in heat, dusty environments or if you're working with chemicals. Chain hoists may perform better in the extreme cold.
4. Precision and control - wire rope hoists generally offer greater precision of movement than cable hoists.
5. Speed - in addition, a wire rope hoist can also offer faster lifting speeds.
6. Special features - wire rope hoist configurations offer more special feature selections.

1. Materials Handling

Not surprisingly, the most frequent wire rope hoist use is also the most straightforward: lifting heavy things. The unlimited length of wire rope they can pull allows them to lift and lower tools, bundles of building materials, mechanical units, and even platforms over vast heights, making them especially useful on projects such as moving heavy equipment, bridge or building construction, or at sites such as wind turbines. And since wire rope hoists are compact, easy to operate, and capable of applying force at odd angles, one or more of them used together can make positioning awkwardly shaped heavy objects in tight spaces (large pipes in-between floors or in underground tunnels, for example) easier and safer.

2. Tensioning

The ability to pull with power and precision makes a wire rope hoist well-suited for tensioning applications. Applying sustained tension to cables and platform sections is essential to suspension bridge construction and maintenance. Wire rope hoists can also be used to tension the cables used on utility poles and in elevators. Other tensioning applications include fencing, rigging, and guy wires that stabilize towers and large antennas.

3. Demolition

In addition to all the ways in which they help with the construction and erecting of structures, lever-operated rope hoists can be very effective in bringing buildings down. The hoist's unlimited wire rope length and horizontal pulling power make it possible to pull and break apart load-bearing structures within a building for a precisely controlled demolition while maintaining a safe distance. This reach and power also make the hoist a useful mining tool, pulling down vein reinforcement structures at a distance. During cleanup, the same hoists can serve as the manual lifting equipment that helps with shifting and removing heavy chunks of debris.

4. Rescue Applications

For fire and rescue crews, the portability of the hoist means that it can be carried to any part of an accident or fire scene and be put to use before heavy equipment can even arrive. A lifting hoist that is certified for manriding can be used to raise or lower rescuers or victims in deep shafts or on high buildings. Even a single worker can use the strength of a hoist to move a rolled-over or below-grade vehicle on an accident site or to reposition a derailed mining wagon.

5. Tree Work

Arborists, landscapers, and even homeowners can use a wire rope hoist to assist with tree removal and related tasks. Felling a tree trunk at a precisely controlled angle is easier with a hoist applying pull from the appropriate direction. Branches damaged by disease or severe weather can be pulled down with the power a hoist, and a fallen limb which is resting on a vehicle or other fragile object can be carefully lifted.

Factor 1: Load Lifting Requirements

While there are several factors to consider, the most important thing to remember is the load lifting requirements. What is the average load lifted on your site? This is the bare minimum load requirement and, while many hoists may meet this minimum, it's best that you select one that can handle more than that. High capacity hoists offer invaluable security, safety, and ability to move significantly larger loads should you need to; it's not uncommon for unexpected load increases. They also give you peace of mind that your average loads won't put any undue pressure on the equipment, so you can get the job done without worry.

Factor 2: Keep an Eye on Lifting Numbers

Before you decide on a lift, ask yourself how many lifts you'll ask the wire rope hoist to do. This is another important deciding factor, as it can limit your options if you're performing an exceedingly demanding job. The materials' strength of various hoists may vary, with some unable to perform as many lifts as others. If you know you're going to be asking a lot of the machinery, or there's a chance you may need to perform unexpected or additional lifts, take the cautious approach and go with equipment that can handle a high amount of lifts. Not only does this give you more flexibility should you need it, but it also keeps you and others safe on the job.

Factor 3: What Are Your Priorities and Future Needs?

This may sound like a no-brainer, but it's important to think ahead. If you're only buying the hoist that meets your immediate needs, you could be saving money upfront, but spending more for a replacement down the road. Investing in a piece of machinery that not only meets your most pressing needs but will serve you well in the years to come just makes sense.

Essential Inspection Tips:

• To begin with clean the wire rope for any dust and rust such that any cracks, cuts, and tear is clearly visible.
• Take a soft cloth or any fabric and move it over the wire rope as if to clean the surface. If the cloth gets stuck in between any broken area you will be able to find the damaged part.
• Measure the diameter of the wire rope and compare it with original, standard wire rope, if you find a difference, it concludes that the wire has undergone some internal or external damage.
• You can also check the interiors of wire rope for corrosion and abrasions by using a spike and moving it between the two strands of wire and opening them up.

Essential Maintenance Tips:

• Conduct frequent and regular inspections of the wire rope essentially at the start of every shift or operation.
• Sometimes the rope gets damaged inside the hoist drum and sheaves. Inspecting them on regular intervals prevents you from using a damaged wire rope and avoids a costly mishap.
• Inspect the entire length of the wire rope until the point where the load is attached.
• If you notice any broken wires, remove the wire rope hoist immediately.
• The diameter of the wire rope gets diminished over a period of time with regular use. Depending upon the application, the reduction may happen sooner.
• Other critical factors to look for are corrosion, rope deformation, and loose loops.
• Always check for the cause of wear and tear post discarding of the damaged wire rope.

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