Soil compacting device with unbalance exciter driven by an electric motor

By separating the electric motor from the unbalance exciter and using a dedicated drive shaft, the compact design of vibrating plates is enhanced, reducing noise and weight while maintaining vibration efficiency.

EP4632149A1Pending Publication Date: 2025-10-15WACKER NEUSON PRODUKTION GMBH & CO KG
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Patent Information

Application Number
EP2025168554
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-10
Filing Date
2025-04-04
Publication Date
2025-10-15

AI Technical Summary

Technical Problem

Existing vibrating plates with electric motors face challenges in compact design due to the integration of the motor's stator diameter, leading to large center distances between unbalanced shafts, requiring large gears, increased weight, and higher operating noise.

Method used

The electric motor is provided as a separate component with a dedicated drive shaft, allowing the unbalance exciter to be constructed more compactly, minimizing the center distance between unbalanced shafts, and using a torque transmission device to transmit drive torque without integrating the motor into the exciter.

Benefits of technology

This design achieves a significantly more compact and efficient soil compaction device with reduced noise and weight, while maintaining effective vibration performance.

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Abstract

A soil compaction device is specified, comprising an upper mass (1); a lower mass (2) movable relative to the upper mass (1), a soil contact plate (9) for soil compaction; a vibration decoupling device (3) acting between the upper mass (1) and the lower mass (2); at least one unbalance exciter (10) belonging to the lower mass (2) for applying an unbalance force to the soil contact plate (9); and an electric motor (27) provided on the lower mass (2) for driving the unbalance exciter (10); wherein the unbalance exciter (10) has at least two unbalance shafts (21, 22) arranged parallel to one another, each carrying an unbalance mass (25, 26); and wherein the electric motor (27) has a drive shaft (28) which is structurally separate from the two unbalance shafts (21, 22).
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