Disassembling tool for bearings at two ends of main driving pinion of shield tunneling machine
By designing a disassembly fixture that includes components such as flange plates, bearing sleeves, and hydraulic jacks, the problem of uniform force during the disassembly of the bearings at both ends of the main drive pinion of the tunnel boring machine was solved, achieving non-destructive disassembly and improving maintenance efficiency and equipment lifespan.
CN223848534UActive Publication Date: 2026-01-30XCMG KAIGONG HEAVY IND NANJING CO LTD
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Patent Information
- Application Number
- CN202520378276.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Technical Problem
Existing technology makes it difficult to apply uniform force to the self-aligning roller bearings at both ends of the main drive pinion of the tunnel boring machine, which leads to damage to the bearings and pinion, affecting the overall performance and service life of the tunnel boring machine.
Method used
A disassembly fixture comprising a flange plate, bearing sleeve, hydraulic jack, stud, nut, and washer was designed. It transmits uniform axial force through a cylindrical cage structure, enabling non-destructive disassembly of the bearing and pinion.
Benefits of technology
This allows for the uniform disassembly of self-aligning roller bearings, avoiding damage to the bearings and pinions, and improving maintenance efficiency and equipment lifespan.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field of shield tunneling machine maintenance, in particular to a disassembling tool for bearings at the two ends of a main drive pinion of a shield tunneling machine. An annular groove is formed in the inner surface of the annular flange, and the bearing B to be disassembled is wrapped in the annular groove; the annular flange and the flange plate are assembled into a cylindrical cage-shaped structure through a plurality of studs; a jack is mounted in the cylindrical cage-shaped structure, and axial force for dismounting is transmitted to the bearing clamping sleeve through the flange plate by utilizing the cylindrical cage-shaped structure, so that the bearing B to be dismounted axially moves relative to the pinion A, and the dismounting purpose is achieved; and meanwhile, the axial force borne by the to-be-disassembled bearing B is uniform acting force, so that the to-be-disassembled bearing B is prevented from being damaged. The axial force borne by the end face of the small gear A is uniform acting force through the gasket, and the small gear A is prevented from being damaged.
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