3 results about "Limited structures" patented technology

The invention relates to the field of building decoration devices, in particular to a material lifting device for building decoration, which comprises a supporting seat, a lifting structure, a motor, a guide structure, a supporting plate, a loading structure, a limiting structure, a driving structure, a connecting structure, a dragging table, a positioning column and a second brake universal wheel. Then building materials can be placed in the loading structure, the supporting plate is moved through the lifting structure, the supporting plate can drive the loading structure to move together, so that the loading structure is lifted to a designated position, then the loading structure can be taken down from the supporting plate, and the taking and placing work of the materials can be achieved in the moving process of the supporting plate; and therefore, the material lifting time is effectively shortened, the material lifting efficiency is improved, the lifting structure can be manually driven to move through the driving structure, and then material lifting work can be achieved under the condition of no electric power.

The utility model relates to the technical field of composite buildings, in particular to a composite building roof height limiting structure which comprises a cast-in-place concrete vertical beam and a cast-in-place concrete cross beam, bases are arranged at the bottoms of the four corners of the cast-in-place concrete vertical beam, and a plurality of installation bases are fixedly installed in the middle of the top of each base. A same supporting frame is fixed between the mounting seats, lifting columns are inserted into the inner wall of the supporting frame, lifting assemblies are arranged at the bottoms of the lifting columns and in the supporting frame, each lifting assembly comprises a threaded column rotationally connected to the middle of the supporting frame, and a U-shaped lifting table is in threaded connection with the outer wall of each threaded column. The height of the cast-in-place concrete vertical beam and the height of the cast-in-place concrete cross beam can be limited, height limiting treatment is conducted on a combined formwork when a cast-in-place layer is poured, the height limiting effect on the composite roof is achieved, the adjusting precision is high, and the consistency effect is good.

This utility model relates to the field of antique building roof technology, specifically to an antique building roof with a limiting structure. It includes two side frames and a connecting unit. The connecting unit includes multiple purlins, two transverse ribs, a fixing seat, a sliding rod, a limiting plate, a spring, a lower pressure plate, a limiting post, a connecting frame, auxiliary components, and a limiting component. In use, one end of the upper tile is slid against the lower pressure plate, causing the limiting plate to compress the spring until the other end of the upper tile abuts against the limiting post. The spring's reaction force firmly clamps the upper tile. Then, the lower tile is placed between the purlins and hooked by the connecting frame. The auxiliary components improve overall stability, and the limiting component presses down on the top lower tile. This method limits the tiles near the bottom, ensuring structural stability and preventing subsequent loosening of the tiles.