Jackhammer Trolley Vibration Dampening and Ergonomic Handling

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Solution Overview

Problem

Conventional hand-operated jackhammers cause operator discomfort, injury, and repetitive strain due to awkward handling, heavy lifting, and constant vibration, exacerbated by inadequate health and safety enforcement in some regions.

Innovation Solution

A jackhammer trolley device with a mainframe, base frame, wheels, clamp, handle, and vibration dampeners that allows ergonomic handling and reduces vibration during operation, featuring a pivoting joint, adjustable handle, and removable wheels and dampeners to support the jackhammer during transport and use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the jackhammer is held and operated manually, then the operator can directly control the tool, but the operator experiences leg, arm and lower back pain, strain and injury due to heavy lifting and awkward positioning

Engineering Contradiction:
Improveoperator comfortVSAvoidoperator injury
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a trolley device as an intermediary between the operator and the jackhammer. The trolley includes a base frame with wheels for mobility, a main frame with a clamp to secure the jackhammer, and a handle for control. This intermediary structure bears the weight of the jackhammer and provides ergonomic handling, eliminating direct manual lifting and holding while maintaining operational control.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Power

If the jackhammer is held in a bent-over position for operation, then the operator can apply force to the tool, but the operator experiences lower back pain and strain from the awkward position

Engineering Contradiction:
Improveforce applicationVSAvoidoperator posture
Core Design Contradiction:
PowerVSEase of operation

Solution Approach 1:

The patent changes the operational dimension by elevating the jackhammer to handrail height through the trolley's vertical main frame and adjustable handle. This allows the operator to apply force horizontally at an ergonomic height rather than bending over vertically, maintaining power transmission while eliminating back strain from poor posture.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If constant vibration is transmitted to the operator during jackhammer operation, then the jackhammer can perform demolition work, but the vibration compounds operator pain and may lead to repetitive strain injury

Engineering Contradiction:
Improvedemolition capabilityVSAvoidrepetitive strain injury
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates vibration dampeners in the form of rubber or spring elements at the interface between the jackhammer and the trolley's clamp mechanism. These dampeners are positioned in advance to absorb and attenuate vibrations before they transmit to the operator's hands and arms, protecting against repetitive strain injury while allowing the jackhammer to function effectively for demolition work.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 jackhammer trolley reduces operator strain and injury by distributing the jackhammer's weight and absorbing vibrations, providing a more comfortable and safer handling experience without compromising the tool's functionality.

Implementation Method 1

At least one vibration dampener whereby the jackhammer trolley provides a means for easily supporting the jackhammer during transport and whilst not in operation, and a more ergonomic method for handling the jackhammer during operation

Methodology Applied
Scientific EffectVibration dampening: Damping

Data Source

PatentUS8240682B2Jackhammer trolley
Publication Date: 2012.08.14 MAKINEX IP PTY LTD
  • US8240682B2 patent drawing
  • US8240682B2 patent drawing
  • US8240682B2 patent drawing

AI summary

According to the present invention, there is provided a jackhammer trolley comprising a mainframe member with a clamp member at the bottom end and an extension bracket portion at the top end, a base frame member removably attached to the mainframe member by pivoting joints with at least one wheel member removably attached to its bottom, a handle member having a hand lever attached to said top end, and at least one vibration dampener fixed to said top or bottom end of the mainframe member.