Rolling bearing installation structure capable of achieving axial undamaged assembly and disassembly

Abstract

The invention relates to a rolling bearing installation structure capable of achieving axial undamaged assembly and disassembly. A conical shaft extension portion is arranged on the front portion of arotating shaft, and threads are formed in the outward extension end of the conical shaft extension portion. An inner ring of a rolling bearing is connected with the conical shaft extension portion onthe front portion of the rotating shaft in a cooperative mode through a conical shaft sleeve, and an outer ring of the rolling bearing is connected with an inner hole of a bearing pedestal in a cooperative mode. An inner hole of the inner ring of the rolling bearing and the outer cylindrical face of the conical shaft sleeve are in interference connection, and the outer cylindrical face of the outer ring of the rolling bearing and the inner hole of the bearing pedestal are connected in a clearance or transition fit mode. An inner hole of the conical shaft sleeve is a conical hole, and the conical hole of the conical shaft sleeve and the conical shaft extension portion on the front portion of the rotating shaft are matched with each other. The outward extension end of the conical shaft extension portion is connected with an axial locating nut through the threads. The rolling bearing installation structure capable of achieving axial undamaged assembly and disassembly can replace a conventional rolling bearing and rotor assembling structure, and can solve the technical problem that when mechanical sealing of a pump which adopts the mechanical sealing is conducted, a rolling bearing cannot be arranged at the outer shaft extension end to conduct axial locating and balance the thrust of the pump, and therefore the pump rotating shaft can be connected with a driving shaft through a flexible coupling, and the running state of a shaft system is greatly improved.

Description

technical field [0001] The invention relates to a ship pump shaft system structure, in particular to a rolling bearing installation structure in the ship pump shaft system. Background technique [0002] Rolling bearings are widely used in rotary machinery shafting. The general installation form of the rolling bearing of the rotary machinery shaft is that the inner diameter of the bearing 5 and the outer diameter of the rotating shaft 6 adopt an interference fit, and the outer diameter of the bearing 5 and the inner diameter of the bearing housing 7 adopt a clearance or transition fit. Such as figure 1 As shown, this conventional installation form can meet the stable and reliable use requirements of the shaft system, but there are also problems that the bearing is not easy to assemble and disassemble, and the assembly and disassembly process may easily lead to bearing failure. [0003] For pump machinery using mechanical seals, mechanical seals are vulnerable parts, and the...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a rolling bearing installation structure that can be assembled and disassembled axially without damage, replacing the conventional assembly structure of the rolling bearing and the rotor. Due to installation and maintenance requirements, rolling bearings cannot be installed at the extension end of the outer shaft to perform axial positioning and balance its own thrust.

Images