Electric Chain Hoist
An electric chain hoist offers significant benefits to industrial workplaces. They’re less expensive to operate than manual hoists and provide greater control of load movement.
They also come with safety features that make them a smart choice for high-volume construction and manufacturing work. However, selecting the right model can be a complicated task.
Power
The electric chain hoist is a piece of industrial machinery used to lift heavy objects in manufacturing settings. The motor that drives the hoist powers a wire rope or chain attached to a hook, which is then used to move and position items like forklifts, car engines, generators and other large equipment. This device allows workers to maneuver heavy materials quickly and efficiently.
The best way to choose a high-quality electric chain hoist is to understand the specific requirements of your working environment and load size. For instance, you must consider the weight of the cargo to be lifted and whether it will be a one-time or continuous use. Then, you must select a hoist that can handle these loads without overloading.
Additionally, you must select a hoist with a motor control device that monitors the speed, voltage and temperature of the motor and shuts off power in the event of a malfunction. This prevents the hoist from overheating and shortening its lifespan. It also helps prevent damage to the sheaves and pulley wheels by limiting the number of times the operator uses it within its duty cycle.
Other features of an electric chain hoist that make it a good choice for your work environment include adjustable limit switches, which regulate the upper and lower limits of travel, mechanical overload protection and 5-pocket load sheaves that increase the chain and sheave engagement by 25% over traditional four-pocket sheaves. Additionally, choosing a hoist with an oil bath transmission provides smoother operation.
Design
The motor of an electric chain hoist works to transfer electrical energy to the load chain drum. This is accomplished by a system of electromagnets that connect between two sets of concentric rings on the motor’s armature. When electric current passes through these different sets of magnets, the hoist’s motor rotates the armature and its attached chain. As the chain moves, it lifts and lowers loads up to its rated load capacity.
An electric chain hoist has many features that enhance its functionality and safety. Its components work together to monitor electrical limits and utilize special lockout procedures to prevent accidents or equipment damage. Many of these modern devices use between two and four times less electricity than standard manual hoists to perform the same tasks.
Depending on the model, an electric chain hoist can include a built-in load beam scale to electric chain hoist determine precise payload weight. They also feature adjustable mechanical brakes that allow for multiple levels of stop points and simple auto-holding functions for hands-free operation. Some are able to accommodate more than 300 starts and stops per hour, which makes them a great choice for high-volume construction or manufacturing operations that frequently move heavy and bulky materials.
The braking system on an electric chain hoist is designed to hold the load in place until the operator releases it or until the unit’s rated limit switch is reached. It is important to inspect the braking system on a regular basis for signs of wear and tear that can affect its function. It is also important to ensure that the hoist is properly connected to the control pendant and the power cord and that consistent, sufficient amperage arrives at the device.
Safety
An electric chain hoist offers improved efficiency and precision in lifting, but it is not without its risks. Hoists, like any piece of equipment in the workplace, present a hazard if not used correctly or if a worker ignores safe operating practices and standards.
Safety protocols must be in place for every location and job where the hoist will be used. They should be clearly defined and enforced. These should include the training of all workers on how to use the equipment. Training should include a discussion of balanced lift points and safe rigging practices. It should also include information about the hoist’s load limit devices and braking mechanisms.
A pre-operational test should be conducted before each use of the hoist. It is important that the area under the hoist be clear of obstructions and that no one is in or near the path of the load at any time. This test should include taking up slack and moving the load a few inches to ensure that it is balanced, and that the hook latches are functioning properly.
Regular maintenance of a hoist should be undertaken to keep it in top condition. This includes lubrication, cleaning and inspection of the hoist’s parts and wiring on a routine basis. Hoists should be stored in climate-controlled conditions and kept away from environmental damage such as rust. Any damaged or worn parts should be replaced immediately to prevent malfunction and potential injuries.
Maintenance
It is important to perform different kinds of maintenance procedures on a hoist to ensure it works properly. These include removing loose ends from fittings and tightening them. Loose ends can cause bigger damage to the crane components and lead to accidents. Hence, it is advised by lever block manufacturers and electric hoist manufacturers to check for these loose ends regularly.
It’s also important to keep the chain clean of rust and debris. This can help reduce the friction of the parts electric chain hoist and prevent them from wearing down. Additionally, the chain should be lubricated with oil.
The lubrication should be done regularly, and the chain should be moved up and down several times for 1-3 minutes to maintain its performance. Using the hoist for more than its duty cycle can accelerate wear down and shorten its lifespan.
Another thing to consider when purchasing a new electric hoist is whether the manufacturer has a good reputation. A reputable supplier will offer significant support for their products. They will be able to answer any questions and provide expert advice on how to use your new electric chain hoist.
Depending on how often you use your hoist, you should conduct a regular examination of it. For standard use, you should check it once a year. For frequent use, you should inspect it every six months.
