Telescopic Guard Assembly for Rotating Shafts
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Solution Overview
Problem
Existing machine guard assemblies for rotating shafts between driving and driven devices are cumbersome and time-consuming to install and adjust, failing to provide a quick and easy solution for securing around varying shaft lengths.
Innovation Solution
A guard assembly featuring telescopically adjustable cylindrical housings with elongated slots and threaded fasteners, along with a split adapter for easy installation and adjustment around the drive shaft, allowing for quick assembly and secure fitting between driving and driven devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional guard assembly is used to enclose a rotating shaft, then safety protection is provided, but the installation and adjustment process becomes time-consuming and cumbersome
Solution Approach 1:
The guard assembly is divided into multiple modular sections that can be independently handled and assembled. Each section can be installed separately around the shaft, reducing the complexity and time of installation while maintaining complete safety coverage when assembled together.
Solution Approach 2:
The guard assembly incorporates adjustable components that allow for dynamic adaptation to different shaft sizes and configurations. This adjustability enables quick installation and removal without requiring custom fabrication for each application, significantly reducing installation time while ensuring proper safety coverage.
2Reliability
If a traditional guard assembly is used to enclose a rotating shaft, then safety protection is provided, but the adjustment process becomes cumbersome and difficult
Solution Approach 1:
The guard assembly features dynamically adjustable components with simple adjustment mechanisms that allow operators to easily modify the guard configuration for different shaft sizes. This maintains reliable safety protection while making the adjustment process straightforward and user-friendly.
Solution Approach 2:
The guard assembly is designed as a universal system that can accommodate various shaft sizes and configurations through standardized adjustment mechanisms. This multi-functionality allows a single guard assembly design to serve multiple applications, simplifying the adjustment process while ensuring adequate safety protection across different scenarios.
3Device complexity
If a fixed-length guard assembly is used, then the structure is simple, but it cannot accommodate varying shaft lengths
Solution Approach 1:
The guard assembly is segmented into multiple standardized sections that can be combined in different configurations. This segmentation maintains relative structural simplicity while enabling the assembly to accommodate varying shaft lengths by adding or removing sections as needed.
Solution Approach 2:
The guard assembly incorporates dynamically adjustable components that allow the overall length and configuration to be modified based on the specific shaft being protected. This dynamic adaptability enables the same basic structure to serve multiple shaft length requirements without requiring completely different designs.
Data Source
AI summary
A guard assembly is provided for extending around a rotating shaft extending between a driving device and a driven device. The guard assembly includes two plastic pliable covers bent to form two cylindrical housings. One cylindrical housing is slidable within the other and movable between a retracted and an extended position. A split ring adapter is secured to one of the devices and includes a series of lugs that project through circumferential openings in one of the cylindrical housings. Additionally, there is provided an end cap secured to one of the cylindrical housings opposite the adapter plate. There is also provided a series of elongated openings provided in each cylindrical housing and one or more fasteners projecting through respective pairs of openings so as to secure one cylindrical housing to the other and to permit one of the housings to slide with respect to the other when the fasteners are loosened.