วันเสาร์ที่ 31 มกราคม พ.ศ. 2558

Points to remember when buying an electric hoist


Author: Gemma richards
Getting the correct lift can be a bit tricky task to accomplish but these simple yet effective tips, you will be able to find the appropriate chain hoist for your application.
• power of the hoist:
They are designed for mechanically 5 to 1 safety factor so you need not consider it in your own safety factor.
• Running time of motors:
Majority of lift motors are rated as 30 minute which means the motor has to be 30 minute on and 30 minute off. You should have an equal time of operating the equipment and resting it.
• Special Conditions:
What kind of the environment the lift is going to be put in. is it s combustible, hot metal (molten), wet, humid, corrosive, or high temperature? According to the environment the braking systems, the limit switches, motors, fans may require changes.
It is therefore advised that you work with an experienced and a professional engineer to ensure that the appropriate hoist equipments are supplied.
• The hoist will be suspended from what?
A lift can be connected with many suspensions like top hook, plain push trolley, motorised trolley or hand geared trolley. A hand geared trolley proves to be the best alternative if you require precision for a shorter distance. It is also preferable for light capacity applications. If you want to use the trolley for more distances, you should go for a motorised trolley instead of the hand geared. An experienced hoist sales professional should be able to guide you correctly.
• How much the hoist has to lift?
No doubts that chain hoists can lift larger capacities but it is important to know the number of chain drops. Electric wire rope hoists are generally used for longer and larger lifts. Remember that it is possible to cut the head room of your hoist from the lift required.
• Hoist and trolley control:
Depending on the application, a simple speed control mechanism may work for you. For example, if the product is fragile and expensive, it requires subtle positioning; you will have to look at the option of variable speed control in your lift and trolley.
• Extra considerations:
There are other factors that need to be thought over. Hoists in general come with an upper and a lower limit switch. They normally do not come with a overload capacity limit and it should be discussed with your professional. It prevents your support system from getting damaged and also the product that you are lifting, especially if it a very fragile product.
For better and a detailed description of hoists and their uses, visit Sky High Access Ltd. They offer the best of multi elevated working platforms for various applications.
Article Source: http://www.articlesbase.com/construction-articles/points-to-remember-when-buying-an-electric-hoist-7190106.html
About the Author
You should without second thoughts contact ‘Sky High Access Ltd'. They offer many services which include overall services from initial consultation, site survey, installation, maintenance, and alteration. Their hire packages are customised to suit the requirements of the client and may range from a few days to 2 year hires.

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