Modular Access Cover Assembly for Large Opening Installation
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Solution Overview
Problem
Existing access covers for infrastructure pits are cumbersome, time-consuming to install due to complex shapes and require deep rebates in concrete, and are limited by size and weight, necessitating heavy lifting equipment for larger openings.
Innovation Solution
A modular access cover assembly comprising sets of interconnected covers supported by a frame with undercut and drawcut surfaces, a support beam, and wall boxes, allowing for easier installation and handling without deep rebates, and accommodating various opening sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single large access cover is used to cover a large opening, then the opening can be covered in one piece, but the cover becomes heavier, bulkier, and more unwieldy to handle
Solution Approach 1:
The access cover is divided into multiple modular panels that can be assembled together to cover large openings. Each panel is of manageable size and weight, allowing easy handling and installation without requiring heavy lifting equipment, while collectively providing comprehensive coverage of the opening
2Adaptability or versatility
If a complex shaped access cover is used to match the opening shape, then the coverage is precise, but the installation becomes time-consuming
Solution Approach 1:
The access cover system uses standardized modular panels that can be configured in different arrangements to match various opening shapes. This modular approach allows precise fitting to complex geometries while maintaining quick installation through simple assembly connections between panels
Solution Approach 2:
The modular panels are designed with universal connection features that allow them to be assembled in multiple configurations. The same basic panel design can adapt to different opening shapes and sizes through varying arrangement patterns, eliminating the need for custom-shaped covers for each application
3Ease of operation
If deep rebates are formed in concrete to support access cover edges, then the cover can sit flush with ground level, but the preparation process becomes time-consuming
Solution Approach 1:
The support frame is pre-assembled with integrated support surfaces at the correct height and angle before installation. This preliminary preparation ensures that when the frame is installed in the opening, the access cover panels can be positioned flush with the ground level without requiring time-consuming formation of deep rebates in the concrete
Data Source
AI summary
Embodiments generally relate to modular access covers. Example embodiments relate to an access cover assembly comprising: a first set of modular access covers and a second set of modular access covers, wherein in each set, adjacent covers are coupled; and a support frame comprising end frame pieces, side frame pieces, wall boxes, and a support beam. The end frame pieces and side frame pieces define a support plane to support the first and second sets of modular access covers. The wall boxes define a support surface to support the support beam and the end frame pieces, and the support surface is offset from the support plane and the wall boxes are connected to the end frame pieces and receive respective ends of the support beam.