Ground Stabilized Drop Hammer Shock Absorption

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Solution Overview

Problem

Existing portable drop hammers for breaking concrete and asphalt pavement face damage due to accumulated concrete chunks causing the drop hammer to displace and contact the base, leading to structural damage when repeatedly used on the same area.

Innovation Solution

A portable, ground-stabilized drop hammer assembly with a shock-absorbing element, either integrated into the support assembly or attached to the drop weight, to absorb movement and prevent damage, combined with a power assembly for vertically reciprocating the drop weight and a host transport apparatus engagement system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the drop hammer is repeatedly used on the same concrete area, then the concrete breaking efficiency is improved, but the drop hammer displaces and contacts the base causing structural damage

Engineering Contradiction:

Improveconcrete breaking efficiencyVSAvoidstructural integrity of support assembly

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

A shock-absorbing element is integrated into the support assembly to provide preemptive protection against the harmful impacts that occur when the drop hammer displaces and contacts the base during repeated concrete breaking operations

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The shock-absorbing element captures and dissipates the harmful impact energy generated during normal operation, converting it into beneficial shock absorption that protects the structural integrity of the support assembly

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 shock-absorbing element effectively prevents damage to the support assembly by absorbing movement, ensuring prolonged operation and reducing maintenance needs, while maintaining efficient concrete breaking capabilities.

Implementation Method 1

A shock absorbing element is carried either the support assembly close to the ground surface or by the drop weight at its end close to the ground. Such shock absorbing material absorbs any movement by the drop weight into the support assembly close to the ground surface to prevent damage to the support assembly

Methodology Applied

Scientific EffectShock absorption: Damping

Data Source

PatentUS7775296B2Ground stabilized transportable drop hammer

Publication Date: 2010.08.17 EPIROC INDUSTRIAL TOOLS & ATTACHMENTS LLC (FORMERLY KNOWN AS STANLEY INFRASTRUCTURE LLC)

AI summary

An improved portable, ground stabilized, drop hammer assembly for impacting a ground surface and adapted to be removably coupled to a driven host transport apparatus is composed of a drop weight, a frame including a sidewall, bottom plate and a host transport apparatus engagement assembly, and a power assembly for vertically reciprocatingly moving the drop weight to impact the ground surface. A shock absorbing element is carried either the frame assembly close to the ground surface or by the drop weight at its end close to the ground. Such shock absorbing material absorbs any movement by the drop weight into the frame assembly close to the ground surface to prevent damage to the frame assembly.