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difference between wire rope electric hoist and electric ring chain hoist

Edit:Henan Linuo hoisting Machinery Co., LtdUpDate:2018-03-22

Recently have customers asked what is the difference between wire rope electric hoist and electric ring chain gourd? Let's take a quick look at the following.

Electric chain electric hoist and wire rope electric hoist different points:

1, Volume: Because the electric chain hoist winding device is the ring chain, driving chain movements are driven by the rotation of the sprocket, sprocket axial size is only 1.6 times times the width of the ring chain, ring chain and sprocket winding larger packet angle is not greater than 270 °. Wire Rope electric Hoist material winding device is a wire rope, driving the wire rope is driven by the rotation of the drum. The wire rope must be at least 3 laps around the reel completely, which is the case when the lifting height is larger. The length of the reel when the hook reaches the upper limit is the main factor to determine the volume of the Wire rope electric hoist. Wire Rope Electric Hoist reel volume is greater than the whole chain electric hoist, if the rise height increase, reel will be lengthened, wire rope electric hoist volume is larger than the same specification chain electric hoist several times even more than 10 times times.

2, lifting height: wire rope electric hoist wire rope wrapped in the reel, produce elastic deformation, relying on the side of the drum is the pressure, its face is the tension, reel direct the smaller, the greater the deformation of the wire rope, wire rope on the face of the pressure, the greater the tension, in order to make this force does not exceed the allowable stress of the wire rope, The diameter of the reel will be larger, so that the deformation of the wire rope is not too large. For this reason, the design specification requires that the reel diameter of the electric hoist should not be less than 20 times times the diameter of the wire rope. And the link chain of electric hoist ring chain is hinged between the chain ring, and the ring chain bears the main pull. In order to reduce the extrusion strength between the chain ring and the contact surface between the chain ring and the sprocket socket, the general chain electric hoist sprocket is made of 5 or 6 nests, and the starting weight and the lifting speed are also made into 4 nests. As a result of the above reasons wire rope electric hoist reel and hook on the rope wheel is much larger than the same specification chain electric hoist sprocket and hook on the sprocket diameter. In this way, the electric chain hoist hook spacing is less than the same size wire rope electric hoist hook spacing. In other words, the same height of the orbital chain electric hoist lifting height is greater than the lifting height of wire rope electric hoist.

3, operating distance: the operation of wire rope electric hoist axis and wire rope electric hoist trolley running track of the center line parallel, the chain electric hoist axis and the operation of the center line can be installed using 90°. Thus, in the same condition, the same track length, the electric chain hoist than the wire rope electric hoist running distance. Even if the HH axis is in parallel with the center line of the running track, because the electric chain hoist has a smaller axial size, its operating distance is much larger than that of the wire rope electric hoist. When the wire rope electric hoist lifting height is larger, its reel is longer, so the running distance will affect more.

4, accuracy: wire rope electric hoist in the hoisting, because the wire rope in the reel along the axial alignment winding, so the hook will be along the electric hoist axis in the direction of horizontal displacement. The higher the lifting height, the more The wire rope winding on the reel, the higher the horizontal displacement of the hook. And the chain electric hoist regardless of rise height size, hook will be along the chain of Plumbline up and down, that is, HH hook can be accurately positioned.