Three-faceted locking mechanism

EP4483017A4Pending Publication Date: 2026-03-04INAN MAKINA SANAYI & TICARET ANONIM SIRKETI
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2022-09-19
Publication Date
2026-03-04

AI Technical Summary

Technical Problem

Automatic pin-locking and hydraulic connections in construction machines often fail due to centering issues between brackets, leading to occupational safety problems and equipment damage, particularly with sensitive hydraulic valves, which are prone to oil leakage and sensor deterioration in harsh environments.

Method used

A three-faceted locking mechanism that integrates a hydraulic mechanism body with co-ordinately moving pin locking and valve locking mechanisms, eliminating the need for sensors by ensuring pins are fully inserted or not at all, and prioritizing valve locking to prevent damage.

Benefits of technology

This solution prevents work interruptions caused by sensor failures and ensures proper centering and locking, reducing the risk of hydraulic fluid leakage and equipment damage, while maintaining operational efficiency without relying on sensors.

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Abstract

A locking mechanism positioned in the upper bracket (21) part of the automatic attachment replacement apparatus (23) and allowing the hydraulic valve connections to be made automatically with pin locking, and characterized in that; the three-faceted locking mechanism (1) includes basically a hydraulic mechanism body (2), a cylindrical cavity (3) positioned in the same axis and different direction for a cavity on the said hydraulic mechanism body (2), valve chamber (4) positioned perpendicular to the said cylindrical cavity and on the said hydraulic mechanism body (2), at least one double-sided screw shaft (8) positioned in the said cylindrical cavity (3), at least two screw shafts on both sides of the said double-sided screw shaft (8) connected by a non-rigid connection locking piston (5) with at least one valve piston (7) positioned in said valve chamber (4) and at least two valve channels (12) that allow hydraulic fluid inlet-outlet between said cylindrical cavity (3) and said valve chamber (4) and at least two locking channels (10).
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Citation Information

Patent Citations

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    EP1317585B1

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    US11053660B2

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    US20060245903A1

  • Lifting arm assembly and method of changing a holder in said lifting arm assembly

    US20160137461A1