Disassembly and Installation of Major Components
2026-01-16
Disassembly and Assembly of the Main Gearbox Section
(1) Disassembly sequence: Cooler assembly (drain lubricating oil) → Drive shaft assembly → Grinding roll assembly → Scraper assembly → Upper nut of main shaft → Grinding roll bracket → Scraper frame → Lower plate of scraper frame → Grinding ring → Liner plate → Vertical bearing housing → Main shaft assembly → Lower end cover of main shaft → Bearing sleeve → Gearbox housing. The main shaft assembly disassembly sequence is: bearing shim → self-aligning roller bearing → oil pump pan → main shaft spacer → large bevel gear.
(2) Disassembly Method: First, sequentially remove the cooler assembly (drain lubricating oil), drive shaft assembly, grinding roller assembly, scraper assembly, upper spindle nut, grinding roller hanger, scraper frame, scraper frame lower plate, grinding ring, liner plate, and vertical bearing housing. Subsequently, disassemble the spindle assembly (including bearing pad, self-aligning roller bearing, oil pump pan, mainspacer sleeve, large bevel gear, and main shaft) in sequence. Finally, remove the lower main shaft end cover, bearing sleeve, and gearbox housing.
(3) Installation of the Gearbox Section: First, install the large bevel gear, main shaft spacer sleeve, oil pump pan, self-aligning roller bearing, and bearing shim onto the main shaft in sequence. Next, install the gearbox housing and bearing sleeve into the machine base. Then, insert the main shaft assembly, vertical bearing housing, and liner plate into the gearbox housing. Finally, install the lower shaft end cover, lower scraper frame plate, scraper frame, and grinding roller hanger in sequence.
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