Guangzhou in the use of maintenance period of machinery - - - - - - Big machine maintenance center pin stuck handling experience is introduced

Guangzhou in the use of maintenance period of machinery - Big machine maintenance center pin stuck introduced 2019 - processing experience 12 - 18 Xu Weiping in large frame in the process of repairing, we need to separate the center pin on the bogie, decomposition, inspection, assembly before loading, but from the center pin on the bogie will be removed when they meet a problem, namely the center pin and the frame with a tight, in the process of hoisting center pin moves with bogie, wheel for out of the rail rollover accidents. Center pin card dead is joint bearing abrasion loss, fragmentation, mounting holes or because the cars in the process of the machine is not synchronous or uneven ground result in inequality, in the process of special maintenance center pin, we found that 08 - 32 and WD320 models seldom appear afore-mentioned problems, but in the DWL - 48 satellite car bogie maintenance, center pin stuck happens is relatively common, our processing method has the following a few: 1, with metal lubricant (first W - 40) Agent in advance lubrication center pin pin, then loosen the center pin socket head bolts of base make the center pin mounting holes and atmosphere are interlinked, loosen the cover after six Angle bolts, using tongbang pounding on the center pin on the side, can let the center pin and swinging back and forth, flexible recycle repair big rolls out the center pin girder car. 2, the use of large machine available equipment and tools maintenance site, try to use recycled brake beam cutting production tooling, will waste brake beam cutting into 50 * 30 cm square, is center after 30 mm hole, pin at the center of the square shape moving beam in upper part, with a center pin hole and tighten the screw through the brake beam center, the center pin and brake Liang Liancheng square one, and then the brake beam below used mechanical jacks to resist its two side, use jack will resist the power of the tooling center sold on top. 3, using the pull pin system principle will be a long screw bolt screwing in the center pin hole, and then design a sleeve tooling, use pull pull pin machine screw the bolt into the center pin hole of long screw, which will center pin out. （ Source: in machinery)