Hinge pin assembly and hinge structure between traction unit and rocker of coal mining machine
By setting an anti-rotation boss and a long tensioning screw connection on the pin assembly between the traction unit and the rocker arm of the coal mining machine, the safety hazards and wear problems caused by loose pins are solved, achieving easy fastening and observable status, thus improving operational safety.
CN115585188BActive Publication Date: 2026-07-10SHANGHAI TIANDI MINING EQUIP TECH CO LTD +2
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI TIANDI MINING EQUIP TECH CO LTD
- Filing Date
- 2022-09-30
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
The existing pin assemblies at the traction unit and rocker arm hinge positions of coal mining machines pose safety hazards during operation and maintenance, and are prone to wear and vibration failures due to loosening.
Method used
The pin assemblies on the coal wall side and the old pit side are each equipped with anti-rotation bosses, which are connected and fixed by long tension screws to ensure axial tightness, and markings are set on the old pit side for easy observation of loosening.
Benefits of technology
This design enables easy fastening and observable status of the pin assembly, avoiding rocker arm vibration and hinge lug failure caused by loosening, and improving operational safety.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115585188B_ABST
Abstract
The present application relates to a kind of hinge pin shaft assemblies and hinge structures between coal cutter traction part and rocker arm, the hinge pin shaft assembly includes coal wall side pin shaft assembly, old pond side pin shaft assembly, long tensioning screw and straight sleeve that is sleeved in both ends of pin shaft assembly and is tightly matched, rotation-preventing boss is equipped on pin shaft assembly, long tensioning screw passes through and tightens coal wall side pin shaft assembly and old pond side pin shaft assembly in assembled state;The hinge structure includes traction part shell, rocker arm shell and the hinge pin shaft assembly, the straight sleeve of coal wall side and old pond side pin shaft assembly is installed in the lug hole of the hinge lug seat of traction part shell, rotation-preventing boss is directly embedded in the rotation-preventing groove in traction part shell, the straight pin of coal wall side and old pond side pin shaft assembly respectively is fixed on traction part shell, and the front and rear hinge lug seat on rocker arm shell is respectively sleeved in the middle part of two straight pins.The present application is easy to fasten, and working condition is easy to observe, and can avoid the failure such as rocker arm vibration and tearing hinge lug seat caused by pin shaft assembly loosening or even coming out.
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