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Pear rope sheath

description:

Pear-shaped rope sleeve
Bridge grab ship unloader installs steel rope pear-shaped rope sleeve at the end of steel rope of ship unloader and open-close steel rope of grab in order to replace various kinds of grabs quickly when using grab to load and unload bulk cargo such as coal and mineral powder. C-type quick unloading buckle is used to connect the steel rope sleeve of ship unloader with the open-close steel rope of grab
When the grab is in closed state, a part of the wire rope is pulled out through the connecting unit to bypass the open and close pulley smoothly, so that the grab can be raised to an ideal height
The connection between the pear-shaped rope sleeve and the steel wire rope is made by pasteurizing
The pear-shaped rope sleeve can be used for 2-3 times of repeated pouring. The temperature of alloy casting is less than 360 C. When the temperature exceeds 360 C, the pear-shaped rope sleeve will lose its better mechanical properties after heat treatment. Preheating should be done before pouring. The preheating temperature is usually 105 - 175 C. The outer side is wrapped with asbestos, so that it can be uniformly and slowly cooled after pouring. When the pear-shaped rope sleeve is tempered at 380 C in a box resistance furnace before the next repeated pouring, the holding time is more than 3 hours, and the air is cooled after discharge. In order to eliminate the complex residual stress of products after local repeated heating

Business characteristics:

Product NumberCable Dia (mm)size (mm)
ABEFHI
UME0110-11694812122412
UME0212-13795615142514
UME0314-15916417162916
UME0416-171037019183118
UME0518-191148421193820
UME0620-211298423214222
UME0722-2414010026234426
UME0825-2715810028254829
UME0928-3017112031275631
UME1031-3319012032295835
UME1134-3620314236316437
UME1237-3922514239356840
UME1340-4224216643377043
UME1443-4526516647417247
UME1546-4828816649438051
UME165634022060549059


Disassembly method

The corresponding inner hexagonal wrench is inserted into the inner hexagonal holes on both sides by the C-type quick release button. The middle connecting block is removed and the end cap is withdrawn by pressing and rotating 90 degrees to loosen (depending on the feel of the hand).

Connection: The pear-shaped rope sleeve or lifting chain is loaded into the two ends of the C-type quick release buckle, the middle connecting block and the end cover are respectively loaded back, and the inner hexagonal fastening bolts at both ends are rotated right and jacked into the locking holes on both sides of the middle connecting block to rotate 90 degrees, after hearing a click. The middle block positioning pin (protruding part) is screwed out. The lubricant can be used if checked correctly.

 

Casting of pear-shaped rope sleeve

     Selection of Babbitt alloy (tin or lead base);

     Heating equipment: electric oven or oxygen acetylene heating.

     Length L of conical sleeve should be measured before making.

     The length of tied wire rope L0 is the length of tapered sleeve L, and the length of tied wire rope L0 is the length of tapered sleeve L.

     The length of wire is less than the diameter of wire rope L1=1/2 or 20mm.

     If the steel wire rope is fibrous core, the fibrous core should be removed.

     The broken wire rope is hooked and cleaned with special cleaning agent. The bending length of the wire rope is 0.5-1 D. The length of the wire rope L3 is measured after completion and dried after cleaning.

     Oxygen acetylene is heated and put into the pasteurized alloy. The melting point of the pasteurized alloy is 240 C. The heating temperature is 350 (+10). The pasteurized alloy solution is stirred evenly. At the same     time, the temperature of the pear-shaped rope sleeve is heated to 105 (-175 (?)

     Fix the pear-shaped rope sheath so that the center of the pear-shaped rope sheath is in the same position as the center of the wire rope.

     The lower end of the sleeve is sealed by a wet high temperature resistant inclusion.

     The dimensions of L4 and L5 should be checked before pouring.

     Sufficient stirring makes the alloy temperature uniform, removes any residue floating in the melting liquid, determines that the pear-shaped rope sleeve and wire rope are dried, and then pours           slowly with the      liquid pasteurized alloy until the sleeve is fully filled.

     When shrinkage occurs in the pouring part of the pear-shaped rope sleeve, the surface of the pear-shaped rope sleeve should be re-liquefied and then poured into the liquid pasteurized alloy.

     Keep the temperature of the pear-shaped rope sleeve, and cool it slowly to room temperature at room temperature.



Notes for Use and Criteria for Abandonment

When it is used after connecting with C-type quick unloading, lithium grease must be added 1-2 times per shift, and the thickness of oil must be more than 3 mm. If the wear of relevant dimensions exceeds 20% in use, the product will be scrapped. If cracks are found, the deformation should be scrapped immediately.