Technical requirements for loading and unloading coupling expansion sleeves

　　The main purpose of the expansion sleeve is to replace the connection of single keys and splines to realize the connection of mechanical parts (such as gears, flywheels, belt pulleys, etc.) and shafts to transmit load. Its function is divided into expansion and locking during use. Two major categories.
　　Technical requirements for loading and unloading coupling expansion sleeves
　　   First, prepare before connection:
　　1957. The size of the shaft and the hole of the combined parts should be inspected according to the method specified in GB81-3177 "Smoothness Regulations", or in accordance with the methods specified in GB82-XNUMX "Smooth Workpiece Dimension Inspection".
　　XNUMX. The bonding surface is free of dirt, corrosion and damage.
　　XNUMX. Apply a layer of lubricating oil evenly on the cleaned surface of the expansion sleeve and the joint surface of the joint (no molybdenum sulfide additives).
　　It is the installation of the expansion sleeve:
　　   First move the connected part to the shaft to make it reach the position specified by the design.Then smoothly insert the expansion sleeve of the loosened screw into the coupling hole, to prevent the inclination of the connecting piece, and then tighten the screw according to the method specified for tightening the screw.
　　Screwing method:
　　XNUMX. Expansion screws should be tightened diagonally and evenly with a torque wrench.
　　XNUMX. The tightening torque value of a single screw is tightened according to the specified value of each type of expansion sleeve.
　　XNUMX. Before tightening the screws, eliminate the gap before tightening the screws according to the procedure.
　　XNUMX. The procedure of tightening screws is as follows:
　　First, after eliminating the gap, tighten with 1/3MA value and 1/2MA value; tighten with MA value; check all screws with MA value.
　　Disassembly of the expansion sleeve:
　　Loosen all the screws when disassembling, but do not unscrew all the screws. Remove the ejected galvanized screws, screw the ejector screws into the auxiliary screw holes of the front pressure ring, and gently tap the swollen transmission parts , Make the expansion ring loose, and then pull out the expansion sleeve.Different types of expansion sleeves have different disassembly methods. You should fully understand their characteristics and try to dismantle them to prevent damage to the ejector thread.