When using chain hoists are what needs attention?

 We use chain hoists in the process, there will inevitably be problems of one kind. So, how can we reduce these problems? Hoists how to ensure a more normal job? Minister force will tell you those answers.
Required to confirm before using intact parts, transmission parts and lifting chain oiled, idling conditions are normal; lifting up and down before checking whether the hanging hook firmly. Prohibited at the tip of errors such as heavy lifting operations. Lifting chain should be hung vertically, without kink chain link, double-row chain under  Hook rack not flip; at lifting weights, and forbids officers to do any work under heavy loads or walking, so as to avoid personal injury; in the lifting process, regardless of  weight up or down, hands pulled the chain, the gentle force should be uniform, Do not apply excessive force to prevent the hand chain jumping or card Ring; operator should stand bracelet round the same plane with hands pulled the chain, making bracelets wheel rotates clockwise, you can make the weight increase; reverse pull yourself chain, noon to slowly decline.Group hanging wire rope winch can do? Group hanging chain hoists What are the methods?
The answer is yes, but for the group hanging chain hoists point of order, how many people know about it, the general group hanging chain hoists are aimed at those large equipment will be used when lifting a method of operation.
Example: Rectangular equipment weight 20 tons with 4-point lifting should be the kind of tonnage chain hoists?
Wrong solution: the use of four chain hoists, a single load of 5 tons, four-point lifting program.
Explanation: The first is a human chain hoist operation, it is impossible to do four sets of chain hoists up while at the same time decrease it if it is not synchronized hoists

natural that there will be four liters of high or low liter if the device most of the weight transfer to the high rise

Gourd that sets what happens? This may be broken chain hoists lifting chain, that this year, the other three units can load 20 tons do? Certainly not, so there will be continued

with questions or scission situations such incidents happened since.
Correct solution: the use of four chain hoists, a single four-point bearing 20 tons lifting program.
Explanation: Each chain hoists safe load is 20 tons, even if there is a Taiwan Taichung four chain hoists chain hoists can not synchronize its lifting or fall. The other three can carry heavy loads its own weight, or even four Taichung a broken chain hoist that can withstand three broken  Chain caused by the impact and heavy weight of its own.
Heavy wire rope hoist upward when the hands clockwise pull chains, sprockets rotate the ratchet friction plate, brake pressure into one common rotation axis will rotate sprocket teeth, tooth stub shaft and spline hole gear. Thus, the device is splined sprocket holes lifting gear took  Dynamic lifting chains, heavy lifting so smoothly.
Counterclockwise decreases drag Rope hoist  hands pull chain, brake pads brake seat with separate ratchet pawl role in stationary, five lifting sprocket tooth long axis of the drive to run the opposite direction, so that a steady decrease weight. Chain hoists generally use one-way ratchet friction disc brakes, the carrier  Dutch on their own under braking action of the spring pawl and ratchet engages the brake safety work.