Vibratory Compactor Unit With Movement Limiter

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Solution Overview

Problem

Current vibratory compaction units lack versatility in compaction processes and suffer from premature failure of elastomeric isolator mounts due to excessive down-pressure, leading to wear and tear.

Innovation Solution

A vibratory compactor unit that can operate as a single attachment for vibratory, roller, and plate compaction, featuring a movement limiter mechanism to restrict deflection of isolator connections, reducing stress on elastomeric mounts and extending their lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If elastomeric isolator mounts are used to connect the vibratory device to the frame, then vibration isolation is improved, but the mounts are susceptible to premature failure due to overstretching when excessive down-pressure is applied

Engineering Contradiction:

Improvevibration isolationVSAvoidisolator mount lifespan

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by introducing a movement limiter mechanism that prevents excessive deflection of the isolator mounts before damage can occur. The limiter includes a limiting member that physically restricts the maximum displacement of the upper frame assembly relative to the lower frame assembly, thereby cushioning the isolator mounts from overstress conditions that would lead to premature failure.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The movement limiter mechanism acts as an intermediary between the upper and lower frame assemblies. The limiting member serves as a mediator that controls the interaction between the frames by imposing a mechanical constraint on their relative movement, thereby protecting the isolator mounts from excessive stretching while still allowing normal operational vibrations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a single attachment is designed to perform multiple compaction functions (vibratory, roller, plate), then versatility is improved, but device complexity increases

Engineering Contradiction:

Improvecompaction process flexibilityVSAvoidattachment structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single attachment assembly that can perform multiple compaction functions. The upper frame assembly with vibratory device can operate independently for vibratory compaction, the lower frame assembly provides roller compaction capability, and the compaction plate can be positioned for plate compaction. This multi-functional design eliminates the need for separate attachments for each compaction type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The attachment is segmented into distinct functional modules: an upper frame assembly containing the vibratory device, a lower frame assembly with roller support, and a compaction plate. These segmented components can be independently configured and positioned to achieve different compaction modes, making the complexity manageable through modular design while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The unit provides flexibility in compaction processes while minimizing the risk of isolator mount failure by limiting deflection, thus enhancing durability and operational efficiency.

Implementation Method 1

a vibratory device (30) mounted to the upper frame subassembly (14)

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 2

The mounts may include an elastomeric material to assist with vibration dampening and isolation of the vibratory unit with respect to the operating machine

Methodology Applied

Scientific EffectVibration isolation: Damping

Implementation Method 3

The compaction drum (48) may be rotatably mounted between the lower frame subassembly side plates (46a, 46b)

Methodology Applied

Scientific EffectRolling: Roller

Implementation Method 4

These isolator mounts are made from elastomeric material, they are susceptible to premature failure due to overstretching, particularly when equipment operators apply to much down-pressure force

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11549228B2Vibratory compactor unit

Publication Date: 2023.01.10 KEPA MFG CO

AI summary

A compaction unit configured for use in the compaction of a surface in connection with construction, excavation and other earth-working or related activities. The compaction unit may be configured as an attachment that can be interchangeably attached to various types of construction machines, operating machines and equipment (such as, but not limited to excavators, backhoes and the like). The compaction unit may be configured as single compaction device capable of performing any combination of (i) vibratory compaction, (ii) roller compaction, (iii) and plate compaction. These capabilities enable the unit to function as a single attachment that can operate as a roller compaction wheel, a vibrating roller compaction wheel, and a vibratory compaction plate depending on the desired application and requirements of the operator.