Semi-butterfly connecting clamp and building steel framework joint structure

• US 20110047925A1
• Filed: 05/21/2008
• Published: 03/03/2011
• Est. Priority Date: 04/29/2008
• Status: Active Grant

• Current Assignee: Beijing Deli New Technology Of Steel Structure Co., Ltd.
• Original Assignee: Beijing Deli New Technology Of Steel Structure Co., Ltd.
• Inventors: Gan, Xiuming
• Granted Patent: US 8,347,579 B2
• Time in Patent Office: Days
• US Class Current: 52/653.1
• CPC Class Codes: E04B 1/2403 Connection details of the elongated load-supporting parts
• CPC Class Codes: E04B 2001/2415 Brackets, gussets, joining plates
• CPC Class Codes: E04B 2001/2424 Clamping connections other than bolting or riveting
• CPC Class Codes: E04B 2001/2454 Connections between open and closed section profiles
• CPC Class Codes: E04H 9/024 Structures with steel columns and beams

Abstract

A semi-butterfly connecting clamp and a building steel framework joint structure are mainly used for connection of a building steel framework. The connecting clamp includes a bearing plate, two L-shaped self-locking blocks, and two clamp wings provided at two ends of the bearing plate, respectively. Each of the clamp wings is integrally formed by a pre-tightening plate and a self-locking fastening plate. A groove is provided at an end of the self-locking fastening plate near the bearing plate. A wedge-shaped piece, having an inclined upper surface and a locking bolt hole, is placed on the self-locking fastening plate at a position near the groove. The retaining distance of the connecting clamp can be conveniently adjusted according to the size of the retained vertical column, and it can weaken the destruction action of the applied outside force on the building steel framework when the outside force acts on the connecting clamp.

Claims

1-6. -6. (canceled)

7. A semi-butterfly connecting clamp, comprising:

a bearing plate;

two L-shaped clamp wings provided at two ends of a side of said bearing plate, respectively, wherein each of said clamp wings and said bearing plate form a U-shaped notch, each of said clamp wings, integrally formed, comprises;

a pre-tightening plate opposite to said bearing plate and having at least one through hole; and

a self-locking fastening plate connecting said bearing plate with said pre-tightening plate, wherein said self-locking fastening plate has at least two through holes, and a groove provided at an end thereof near said bearing plate;

wherein said self-locking fastening plate comprises a wedge-shaped piece placed on an upper surface of said self-locking fastening plate at a position near said groove;

wherein said wedge-shaped piece has an inclined upper surface and a locking bolt hole perpendicular to said inclined upper surface;

wherein a surface of said groove facing to a groove opening thereof is perpendicular to said inclined upper surface of said wedge-shaped piece;

two inversed L-shaped self-locking blocks, each of which comprising;

a transverse rod having a through hole; and

a vertical rod, wherein a lower end portion of which is inserted into said groove and fitted with an inner wall of said groove;

two bolts, each of which being fastened with said locking bolt hole together through said through hole of said self-locking block; and

two springs,

whereby, each of said self-locking blocks is fastened with said self-locking fastening plate by each of said bolts penetrating through said through hole of said transverse rod, each of said springs and said locking bolt hole of said wedge-shaped piece.

8. The semi-butterfly connecting clamp, as recited in claim 7, wherein each of said springs is positioned between each of said self-locking block and said wedge-shaped piece when said upper surface of said wedge-shaped piece inclines toward a middle lower part of said connecting clamp.

9. The semi-butterfly connecting clamp, as recited in claim 7, wherein each of said springs is positioned above each of said self-locking blocks when said upper surface of said wedge-shaped piece inclines toward a middle upper part of said connecting clamp.

10. The semi-butterfly connecting clamp, as recited in claim 7, wherein said self-locking fastening plate has a circular arc recess between an end of said groove and said bearing plate, and a connecting surface between the other end of said groove and said pre-tightening plate.

11. The semi-butterfly connecting clamp, as recited in claim 10, wherein said connecting surface is a cambered surface.

12. The semi-butterfly connecting clamp, as recited in claim 10, wherein said connecting surface is an inclined surface.

13. The semi-butterfly connecting clamp, as recited in claim 7, wherein said pre-tightening plate is parallel to said bearing plate.

14. The semi-butterfly connecting clamp, as recited in claim 10, wherein said pre-tightening plate is parallel to said bearing plate.

15. The semi-butterfly connecting clamp, as recited in claim 7, wherein said pre-tightening plate inclines to said bearing plate.

16. The semi-butterfly connecting clamp, as recited in claim 10, wherein said pre-tightening plate inclines to said bearing plate.

17. A building steel framework joint structure, comprising:

a vertical column;

at least two I-shaped cross beams, each of which comprises an upper flange plate, a lower flange plate and a web plate provided between said upper and lower flange plates;

four friction shear resistant plates distributed evenly on outer surfaces of four corners of said vertical column, respectively, wherein each of said friction shear resistant plates, located between said vertical column and each of said cross beams and integrally formed, comprises;

a concaved friction plate; and

two shear resistant plates connected with middle parts of two sides of said friction plate, respectively, wherein said shear resistant plates of adjacent friction shear resistant plates and said web plate of said cross beam between said two adjacent shear resistant plates are fixed together;

at least four connecting clamps, each of which comprises;

a bearing plate;

two L-shaped clamp wings provided at two ends of a side of said bearing plate, respectively, wherein each of said clamp wings and said bearing plate form a U-shaped notch, each of said clamp wings, integrally formed, comprises;

a pre-tightening plate opposite to said bearing plate and having at least one through hole; and

a self-locking fastening plate connecting said bearing plate with said pre-tightening plate, wherein said self-locking fastening plate has at least two through holes, a groove provided at an end thereof near said bearing plate;

wherein said self-locking fastening plate comprises a wedge-shaped piece placed on an upper surface of said self-locking fastening plate at a position near said groove;

wherein said wedge-shaped piece has an inclined upper surface and a locking bolt hole perpendicular to said inclined upper surface;

wherein a surface of said groove facing to a groove opening thereof is perpendicular to said inclined upper surface of said wedge-shaped piece;

two inversed L-shaped self-locking blocks, each of which comprising;

a transverse rod having a through hole; and

a vertical rod, wherein a lower end portion of which is inserted into said groove and fitted with an inner wall of said groove;

two bolts, each of which being fastened with said locking bolt hole together through said through hole of said self-locking block; and

two springs, wherein each of said self-locking blocks is fastened with said self-locking fastening plate by each of said bolts penetrating through said through hole of said transverse rod, each of said springs and said locking bolt hole of said wedge-shaped piece;

wherein every two connecting clamps form a pair, said two connecting clamps of said pair are respectively located at two opposite sides of said vertical column, said pre-tightening plates of said pair of connecting clamps are placed opposite to each other, said upper and lower flange plates of said cross beam are arranged above or below said self-locking fastening plates bolted with said upper and lower flange plates, said pre-tightening plate has at least one through hole, said pre-tightening plates of said pair are fastened opposite to each other.

18. The building steel framework joint structure, as recited in claim 17, wherein each of said springs is positioned between each of said self-locking block and said wedge-shaped piece when said upper surface of said wedge-shaped piece inclines toward a middle lower part of said connecting clamp.

19. The building steel framework joint structure, as recited in claim 17, wherein each of said springs is positioned above each of said self-locking blocks when said upper surface of said wedge-shaped piece inclines toward a middle upper part of said connecting clamp.

20. The building steel framework joint structure, as recited in claim 17, wherein said self-locking fastening plate has a circular arc recess between an end of said groove and said bearing plate, and a connecting surface between the other end of said groove and said pre-tightening plate.

21. The building steel framework joint structure, as recited in claim 20, wherein said connecting surface is a cambered surface.

22. The building steel framework joint structure, as recited in claim 20, wherein said connecting surface is an inclined surface.

23. The building steel framework joint structure, as recited in claim 17, wherein said pre-tightening plate is parallel to said bearing plate.

24. The building steel framework joint structure, as recited in claim 20, wherein said pre-tightening plate is parallel to said bearing plate.

25. The building steel framework joint structure, as recited in claim 17, wherein said pre-tightening plate inclines to said bearing plate.

26. The building steel framework joint structure, as recited in claim 20, wherein said pre-tightening plate inclines to said bearing plate.