Soil compacting device and phase-adjustable unbalance exciter having two driven shafts

The unbalance exciter with separately controllable drives and a coupling play device simplifies the phase adjustment process, addressing the complexity and contamination issues in existing soil compaction devices, enabling efficient direction switching and reversibility.

EP4495326A1Pending Publication Date: 2025-01-22WACKER NEUSON PRODUKTION GMBH & CO KG
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Patent Information

Application Number
EP2024187860
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-07-17
Filing Date
2024-07-10
Publication Date
2025-01-22

AI Technical Summary

Technical Problem

Existing soil compaction devices with unbalance exciters require numerous expensive and susceptible-to-contamination components for phase adjustment, complicating direction switching and reversibility.

Method used

An unbalance exciter with two parallel shafts, each having its own separately controllable drive, and a coupling device allowing counter-rotational coupling with a play device to adjust rotational positions, enabling targeted phase position changes without complex hydraulic systems.

Benefits of technology

Simplifies the structure of the unbalance exciter while maintaining functionality, reducing component costs and susceptibility to contamination, and allowing for efficient direction switching and reversibility in soil compaction devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

An unbalance exciter is described, comprising at least two unbalance shafts (21, 22) arranged parallel to each other; wherein each of the unbalance shafts (21, 22) has its own separately controllable drive (23, 24) for generating a drive torque; wherein a coupling device (27) is provided for coupling the two unbalance shafts (21, 22) in opposite directions; wherein the coupling device (27) has a play device (31) for enabling controlled play in the rotational positions of the two unbalance shafts (21, 22) relative to each other; and wherein the play device (31) enables play between the two unbalance shafts (21, 22) with a predetermined angle of rotation, the angle of rotation being selected from a range of 45° to 315°.
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Citation Information

Patent Citations

  • Vibration plate with electric drive

    DE102020102949A1

  • Oscillating device with adjustable balance weights - permitting continuous adjustment during operation

    DE2409417A1

  • vibration exciter for soil compaction equipment

    DE3043719A1

  • Oscillation exciter

    EP2789402A1

  • A vibrator for compacting soil and the like

    EP0054529A1

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