A hopper for adjustable height and position of the outriggers at the stair steps

By designing a hopper with adjustable leg height and position, the problem of unstable mortar placement and low efficiency in stairwell plastering construction was solved, achieving stable placement of mortar on stair treads and efficient construction, ensuring plastering quality and smooth construction.

CN224351641UActive Publication Date: 2026-06-12THE FOURTH OF CHINA EIGHTH ENG BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE FOURTH OF CHINA EIGHTH ENG BUREAU
Filing Date
2025-05-15
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In stairwell plastering, existing equipment cannot effectively hold mortar, causing mortar to fall to the ground, affecting plastering quality and construction efficiency, and also occupying stairwell space and hindering other personnel from operating.

⚗Method used

Design a hopper with adjustable outrigger height and position. The height and position of the load-bearing platform can be adjusted by connecting the truss and the drive mechanism. The lifting outrigger is synchronously extended and retracted by the meshing transmission of the drive worm and the driven worm wheel. Combined with the limit mechanism, the load-bearing platform can be stably supported and moved horizontally.

🎯Benefits of technology

This allows the mortar to be placed stably on the stair treads, improving construction efficiency, ensuring plastering quality, and reserving passageways for personnel to pass through, thus avoiding the occupation of stair space.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of auxiliary technology for plastering construction, and more particularly to a hopper with adjustable leg height and position for use at stair treads. It includes a connecting truss and a load-bearing platform placed at the stair tread position to support the mortar basin. The lower end of the connecting truss is integrally connected to a load-bearing bracket, and both ends of the connecting truss are symmetrically welded with load-bearing sleeves. The load-bearing sleeves are equipped with limiting mechanisms for driving the horizontal movement of the load-bearing platform. This utility model integrates a load-bearing bracket at the lower end of the connecting truss, utilizes a meshing drive worm and driven worm wheel on the load-bearing bracket, and uses movable limiting brackets to stably support and limit the load-bearing platform. This ensures construction efficiency, controls the hopper width, ensures passage on one side of the stairwell during construction, allows direct use on the stair treads, ensures the mortar is placed off the ground, guarantees plastering quality, and improves construction efficiency.
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