The differences between chain electric hoist and wire rope hoist?

The differences between chain electric hoist and wire rope hoist?

1.      Running distance

The running HG axis is parallel to the central line of the trolley track wire rope hoist. The center line of the HH axis and the running track can be installed at 90 degrees so that it can be used. Under the same condition and the same track length, the HH is larger than the HG, even if the HH axis is parallel to the central line of the running track. Because the HH axial size is small, the running distance is HG and HG are much greater when lifting height is large, its drum is longer, so the impact will be greater running distance.

2.      Precision

When the HG is lifting, the wire rope is arranged in the axial direction along the reel, Therefore, the hook will have a horizontal displacement along the axis of the hoist, lifting height, the greater the rope on the drum winding turns more. Hook the horizontal displacement increased HH lifting height regardless of size, the hook will ring chain along the plumb line, which can accurately locate the HH hook.

3.      Hoisting height

HG of wire rope winding on the drum, produce elastic deformation, on the drum side are under pressure, The corresponding surface is tensile, drum diameter is smaller, the greater the deformation of wire rope, The greater the corresponding surface pressure wire rope tension in order to make the force does not exceed the allowable stress of wire rope, the diameter of the drum is larger. So that the deformation of the steel wire rope not too much for this, design specification requirements of hoist drum diameter not less than 20 times the diameter of the wire rope and HH chain link is the connection between articulated. The ring chain bears mainly tensile force, in order to reduce the extrusion strength between the chain link and the wheel nest. General HH sprocket made five or six litter, weight and hoisting speed is lesser also has made four due to these reasons HG in the hollow of the drum and the hook on the rope wheel is far bigger.

4.      Volume

Since HH fetch winding device is chain, drive chain electric hoist is by the rotation of the sprocket, Sprocket axial size the width is only 1.6 times the chain and sprocket chain wide winding Angle of the bag is not greater than 270 ° HG fetch winding device is a steel wire rope. Drive wire rope hoist is to rely on the rotation of the drum to at least 3 circles completely wrapped on the reel. This is the maximum height of the lifting case. When the hook reaches the upper limit, the reel length is the main factor determining the volume of the HG. The volume of the HG drum is larger than the whole HH. If the lifting height increases, the drum will be lengthened, HG volume is greater than the specifications of HH several times or even ten times.