Sliding Dust Shroud Assembly for Fast Chipping Hammer Bit Changes
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Solution Overview
Problem
Conventional chipping hammer dust shrouds require removal from the chipping hammer to switch out bits, leading to time-consuming and inefficient operations during demolition jobs.
Innovation Solution
A dust shroud assembly that includes a chipping hammer bit chamber with a vacuum port, a sliding dust shroud sleeve, and an attachment collar, allowing the dust shroud to remain attached to the chipping hammer while enabling bit changes by retracting the sleeve to bias the quick-change drill chuck into an open state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dust shroud is removed to change chipping hammer bits, then the bit can be replaced, but the operation becomes time-consuming and inefficient
Solution Approach 1:
The dust shroud assembly is divided into separable components: the dust shroud body and the dust shroud sleeve. The sleeve can be independently retracted to access the quick-change mechanism while the main dust shroud remains attached, allowing bit replacement without removing the entire dust collection system.
Solution Approach 2:
The dust shroud sleeve acts as an intermediary component between the dust shroud body and the chipping hammer bit. By retracting this intermediate element, the quick-change mechanism becomes accessible, enabling bit replacement while maintaining the connection between the dust shroud and the tool.
2Loss of time
If the dust shroud remains attached during bit changes, then time is saved, but access to the quick-change mechanism is blocked
Solution Approach 1:
The dust shroud assembly is segmented into the main body and a movable sleeve. The sleeve can be independently retracted along the longitudinal axis to expose the quick-change mechanism, allowing operators to change bits without detaching the entire dust collection system.
Solution Approach 2:
The dust shroud sleeve is designed as a dynamic component that can move along the longitudinal axis of the dust shroud body. It features a retracted position for bit changes and an extended position for dust collection, adapting its state based on operational needs.
3Productivity
If a sliding dust shroud sleeve is added to enable bit changes, then bit replacement becomes efficient, but the device complexity increases
Solution Approach 1:
The dust shroud sleeve is nested within the dust shroud body, with the sleeve moving along the longitudinal axis inside the body's interior space. This nested configuration allows the sliding mechanism to be integrated without significantly increasing the overall external dimensions or complexity of the assembly.
Solution Approach 2:
The dust shroud sleeve is designed as a dynamic component that can move along the longitudinal axis of the dust shroud body. It features a retracted position for bit changes and an extended position for dust collection, adapting its state based on operational needs.
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
Enables efficient bit changes without detaching the dust shroud, reducing downtime and maintaining dust collection efficiency during chipping operations.
Implementation Method 1
a pair of radially offset dust shroud sleeve biasing members extending outwardly from an exterior surface of the dust shroud sleeve body
Implementation Method 2
a chipping hammer bit chamber having a vacuum port extending exteriorly therefrom
Data Source
AI summary
A dust shroud assembly releasably attachable to the working end of a chipping hammer includes a chipping hammer bit chamber having a vacuum port extending exteriorly therefrom, an end cap releasably attachable to a distal end of the chipping hammer bit chamber, a dust shroud sleeve slidingly contained within an interior of the chipping hammer bit chamber, and an attachment collar for releasably attaching a proximal end of the chipping hammer bit chamber to the working end of a conventional chipping hammer device about a quick change chipping hammer drill chuck.