Special-shaped sleeve block structure
By combining the end face shield and the folded edge shield, the problem of traditional protective shields being unable to fit the outer folded edge of trapezoidal cross-section steel structures is solved, achieving a stable fit and convenient maintenance.
Patent Information
- Application Number
- CN202423167503.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Traditional protective covers cannot effectively fit the outer folded edge of a trapezoidal cross-section steel structure, resulting in poor support and affecting protective performance.
It adopts a combination structure of end face cover and folded edge cover. The end face cover fits the end face, and the folded edge cover is connected to the outer flange through an outer adhesive section. The overall packaging folded edge and end face cover are fixed. A combination of fireproof and heat-insulating layer and fiberglass cloth layer is used to ensure stable fit and removable maintenance.
It achieves stable protection for trapezoidal cross-section steel structures, ensures the fit of end faces and folded edges, improves protective performance, and features convenient disassembly and maintenance.
Smart Images

Figure CN223794906U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a protective sleeve, specifically an irregularly shaped sleeve structure. Background Technology
[0002] With the increasing demand for various protective measures, traditional anti-corrosion paint for steel structures is no longer sufficient to meet the higher requirements of modern applications. While conventional square steel structures can be protected directly with end caps, trapezoidal steel structures with two folds on the trapezoidal side followed by a 90-degree outward fold, conventional protective covers are ineffective. Because the outward fold protrudes above the outer end face, the cover does not fit snugly against the end face, resulting in poor support. Under external stress, the structure is prone to deformation. Furthermore, this affects the strength of the zipper and adhesive bonding between the cover and the protective sleeve or tube surrounding the steel structure, thus compromising protective performance. Summary of the Invention
[0003] This utility model provides a special-shaped sleeve structure that effectively ensures the fit of the end face and the folded edge, providing safe and stable protection for the protection of trapezoidal cross-section structures with external folded edges.
[0004] The technical solution adopted by this utility model is: an irregularly shaped sleeve structure, characterized in that: it includes an end cover and a folded edge cover fitted onto the outer end face of a steel material with an outer folded edge. The end cover includes an end face and an edge covering. The end cover is a cover structure integrally cut from a whole outer protective material. Folded edge holes with outward flanges are cut inward from the outer folded edge side on the end face. The folded edge cover is a cover structure integrally cut from a whole outer protective material and corresponding to the outer folded edge. An outer bonding section extends outward from the three outer sides of the folded edge cover that do not correspond to the folded edge holes. The outer bonding section is bonded to the outer side of the three outer edge coverings via inner fasteners. The outer flange is bonded to the inner side of the folded edge cover via outer fasteners. The whole outer protective material includes a fiberglass cloth layer and a fireproof and heat-insulating layer. The upper and lower parts of the fireproof and heat-insulating layer are bonded and hot-pressed together with the fiberglass cloth layer.
[0005] The fireproof and heat-insulating layer is an aerogel layer, a rock wool layer, or a mineral wool layer.
[0006] A zipper is provided around the outer edge of the edging.
[0007] This utility model addresses the protection requirements of trapezoidal cross-section steel structures with external folded edges. It employs a combination of an end-face cover and a folded edge cover. The end face cover's end portion fits snugly against the end face, ensuring stable fit. The end face cover has folded edge holes corresponding to the external folded edge positions. The external folded edge passes through these holes, and the folded edge cover covers the 90-degree folded edge. The inner bottom and sides of the folded edge cover fit well against the two sides of the 90-degree folded edge, ensuring stable fit. Furthermore, the folded edge cover's three extended sides are bonded to the edge of the end face cover, with the inner side of the folded edge cover bonded to the external folded edge. This ensures a stable fit between the folded edge cover and the end face cover, and provides convenient disassembly, maintenance, and replacement. The end face cover and folded edge cover are made of a single sheet of fire-resistant and heat-insulating material, consisting of upper and lower fiberglass cloth layers, effectively balancing ease of structure forming and stable protective performance. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the steel structure used in this utility model;
[0009] Figure 2 for Figure 1 AA view.
[0010] Figure 3 This is a schematic diagram of the structure of this utility model in use;
[0011] Figure 4 This is a schematic diagram of the overall outer protective material structure of the end face cover and folded edge cover of this utility model.
[0012] In the figure: 1. Trapezoidal end face; 2. Outer folded edge; 3. End face cover; 4. End face section; 5. Folded edge; 6. Edge wrapping section; 7. Folded edge cover; 8. Outer bonding section; 9. Fireproof and heat-insulating layer; 10. Fiberglass cloth layer; 11. Detailed Implementation
[0013] The following explanation, in conjunction with the accompanying drawings, will provide further details.
[0014] Figure 1-4 As shown: A non-circular sleeve structure, consisting of an end cover 3 and a folded edge cover 8 fitted onto the trapezoidal end face 1 of a steel material with an outer folded edge 2. The end cover 3 includes an end face 4 and a edging portion 7. The end cover is a cover structure integrally cut from a single piece of outer protective material. The end face 4 is cut inward from the outer folded edge side to form a folded edge hole 5 with an outer flange 6 and a through-hole for the outer folded edge 2. The folded edge cover 8 is a cover structure integrally cut from a single piece of outer protective material, corresponding to the outer folded edge. The three outer sides of the folded edge cover 8 that do not correspond to the folded edge hole have an outer bonding section 9 extending outward. The outer bonding section 9 is bonded to the outer side of the three outer edging portions 7 via an inner hook and loop fastener. The inner side of the folded edge cover 8 is bonded to the outer flange 6 via an outer hook and loop fastener. The entire outer protective material includes a fiberglass cloth layer 11 and a fireproof and heat-insulating layer 10. The upper and lower parts of the fireproof and heat-insulating layer are bonded and hot-pressed together with the fiberglass cloth layer.
[0015] In this embodiment, the fireproof and heat-insulating layer can be an aerogel layer, a rock wool layer, or a mineral wool layer.
[0016] Based on this embodiment, the protective tube or sleeve that is wrapped around the inner side of the steel structure end face is connected by a zipper on the outer edge of the edging.
Claims
1. An irregularly shaped nested block structure, characterized in that: The device includes an end cover and a folded edge cover fitted onto the outer end face of a steel material with an outward folded edge. The end cover includes an end face and an edge covering. The end cover is a one-piece outer protective material cut and formed into a cover structure. A folded edge hole with an outward fold is cut inward from the outward fold side on the end face. The folded edge cover is a one-piece outer protective material cut and formed into a cover structure corresponding to the outward fold. An outer bonding section extends outward from the three outer sides of the folded edge cover that do not correspond to the folded edge hole. The outer bonding section is bonded to the outer side of the three outer edge coverings via an inner hook and loop fastener. The outward fold is bonded to the inner side of the folded edge cover via an outer hook and loop fastener. The one-piece outer protective material includes a fiberglass cloth layer and a fireproof and heat-insulating layer. The upper and lower parts of the fireproof and heat-insulating layer are bonded and heat-pressed together with the fiberglass cloth layer.
2. The irregularly shaped nested block structure according to claim 1, characterized in that: The fireproof and heat-insulating layer is an aerogel layer, a rock wool layer, or a mineral wool layer.
3. The irregularly shaped nested block structure according to claim 1, characterized in that: A zipper is provided around the outer edge of the edging.