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A platform for research: civil engineering, architecture and urbanism
Triquetrum four-tip hollow deflating nail
The invention discloses a triquetrum four-tip hollow deflating nail which is characterized by comprising four tips. Each tip is of a triangular pyramid structure. Each triangular pyramid is hollow and bottomless and lacks one inclined plane, and namely, each triangular pyramid is composed of two bottom edges, three bevel edges and two inclined planes. The bottom edge of any one of the four tips and the bottom edges of the other tips adjacent to the tip are fixedly welded and fixed or welded and fixed through a connecting plate. Structurally, the deflating nail has the advantages of being stable and sharp in landing, large in deflating space, small in weight and low in machining cost; in addition, deflating nails can be overlapped and stacked, and therefore the storage space is saved.
Triquetrum four-tip hollow deflating nail
The invention discloses a triquetrum four-tip hollow deflating nail which is characterized by comprising four tips. Each tip is of a triangular pyramid structure. Each triangular pyramid is hollow and bottomless and lacks one inclined plane, and namely, each triangular pyramid is composed of two bottom edges, three bevel edges and two inclined planes. The bottom edge of any one of the four tips and the bottom edges of the other tips adjacent to the tip are fixedly welded and fixed or welded and fixed through a connecting plate. Structurally, the deflating nail has the advantages of being stable and sharp in landing, large in deflating space, small in weight and low in machining cost; in addition, deflating nails can be overlapped and stacked, and therefore the storage space is saved.
Triquetrum four-tip hollow deflating nail
ZHOU BENHUA (author) / ZHOU YONGSHENG (author)
2015-08-12
Patent
Electronic Resource
English
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
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