Portable modular shoring system

Prefabricated Shoring Device for Improved Workability of Underground Structures

This invention relates to a movable prefabricated shoring device, specifically designed to enhance space utilization and workability. It prevents the lateral collapse of excavated sections, such as those created for the replacement and installation of underground structures like sewage boxes. Forward and backward plates are installed on both sides of the excavated section, moving forward at regular intervals by hydraulic cylinders. This movement counteracts earth pressure and prevents soil collapse, allowing for continuous progression in the excavation direction, thereby improving space utilization and work efficiency.

When conventional methods are used for installing underground structures, the equipment mobilized occupies a large workspace, causing inconvenience to surrounding areas. Furthermore, in small-scale construction sites or narrow work environments where crane access for lifting underground structures is difficult, significant challenges arise during installation. These issues not only reduce workability but also lead to extended construction periods and increased costs.

This invention offers several advantages: it allows continuous movement within the excavated section for sewage box construction, eliminating the need for disassembly and reinstallation. As the device continuously moves to secure space for sewage box installation, it counteracts earth pressure and prevents soil collapse, enabling continuous construction. Furthermore, sewage boxes exposed by the device's continuous movement can be immediately backfilled, enhancing workspace utilization at the construction site. This makes sewage box construction feasible even in densely populated urban residential areas, areas with complex buried utilities, or high-traffic zones. Additionally, its prefabricated structure allows for flexible installation sizes to suit site conditions, offering easy disassembly and assembly, and increasing reusability.

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Key Features:

• A pair of forward plates, supported by horizontally connected forward plate struts on the inner side, preventing lateral collapse of the excavated section.
• A connecting plate connected to the outer rear side of the pair of forward plates, featuring a longitudinally oriented connecting plate slot in its rear central part.
• A connecting pin, where the outer side slides against the inner side. The outer front side is inserted into the connecting plate's slot, and the pin passes through the connecting plate and through multiple elongated holes, which are spaced at regular intervals on the outer front side.
• A pair of backward plates, whose outer front side connects to the rear of the forward plates. These backward plates are supported by first and second backward plate struts, horizontally connected to their inner front and rear, thereby preventing lateral collapse of the excavated section.

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[YouTube Video]

Operation and Promotional Video

https://www.youtube.com/watch?v=of1GTN9zYio&t=40s&pp=ygUJc2hz6rO167KV

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