CN219549328U - Assembled combined high-strength bolt anti-falling structure - Google Patents
Assembled combined high-strength bolt anti-falling structure Download PDFInfo
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- CN219549328U CN219549328U CN202320671408.6U CN202320671408U CN219549328U CN 219549328 U CN219549328 U CN 219549328U CN 202320671408 U CN202320671408 U CN 202320671408U CN 219549328 U CN219549328 U CN 219549328U
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- 229920001971 elastomer Polymers 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
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- 229920006247 high-performance elastomer Polymers 0.000 description 3
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Abstract
The utility model discloses an anti-falling structure of an assembled combined high-strength bolt, which is divided into three parts, and is respectively made of two materials, namely steel and rubber, and comprises a bolt with threaded holes at two ends and an anti-falling threaded rod with anti-falling insections, wherein the anti-falling connecting piece is independent and convenient to produce and install. The anti-drop threaded rod comprises a metal rod with anti-slip insections and a rod cap, and the anti-slip insections on the metal rod are matched with the internal threads of the bolt holes. The anti-drop connecting piece has two forms, is made by rubber wholly, one is by rubber circle and rubber rope constitution, and link to each other through the rubber rope between the rubber circle of homonymy, and another kind of sheet rubber and rubber hole are constituteed and are connected by whole sheet rubber between the adjacent metal pole. The utility model has the advantages of simple structure, low cost, flexible installation, convenient replacement, no influence on normal overhaul and maintenance of the high-strength bolt, effective prevention of the bolt from falling off, social benefit and industrial economic benefit.
Description
Technical Field
The utility model relates to a bridge engineering fastener protection technology, in particular to an anti-falling structure of an assembled high-strength bolt.
Background
In recent years, along with the increase of steel yield, improvement of quality and improvement of processing capacity in China, the conditions for popularizing the steel structure bridge in engineering construction are mature. The popularization and application force of the steel structure bridges is increased in all places, and the steel bridges connected by the high-strength bolts are widely applied to bridge engineering along with the increase of the number of the steel structure bridges. However, in actual engineering, the phenomenon that the bolts fall off due to the breakage or loosening of the bolts sometimes occurs, so that once the bolts at the high positions fall off, the driving safety is seriously affected, and the bridge operation is greatly hidden danger is brought to the life and property safety of people. The existing protection method for the diseases is less, consumes labor and has low inspection efficiency, and the difficulty and cost of operation and maintenance of the bridge are improved.
The prior art discloses a bolt fixing structure for a bridge with an anti-falling device (publication number: CN 213596784U).
Disclosure of Invention
In order to solve the problems in the background art and solve the problem of insufficient tightness found in the using process in the prior art, the utility model provides an anti-falling structure of an assembled combined high-strength bolt.
The utility model solves the problems by adopting the following technical scheme: the utility model provides a but assembled combination formula high strength bolt anti-drop structure, includes the bolt of both ends division screw hole, takes anti-drop threaded rod, the anti-drop connecting piece of anti-drop insection, the screw hole at both ends division screw hole's bolt both ends includes bolt head hole and screw rod hole, and the hole center is cylindrical with the bolt central line alignment, take anti-drop threaded rod of anti-drop insection to include the metal pole of taking anti-drop insection, pole cap, the anti-drop connecting piece has two types, and one is constituteed by rubber circle and rubber rope, and links to each other through the rubber rope between the rubber circle of homonymy, and another is constituteed by sheet rubber and rubber hole, every screw hole of the bolt of both ends division screw hole corresponds a metal pole, and the both sides are twisted in bolt head hole and the screw rod downthehole of the bolt of corresponding both ends division screw hole, and the top of every metal pole has a pole cap, overlaps on the metal pole to have the rubber circle and link to each other through the rubber rope between the rubber circle of homonymy and between the metal pole and be connected by whole sheet rubber circle.
Further, the hole depth of the bolt head hole of the bolt with the threaded holes at the two ends should not be larger than the thickness of the bolt head, and the hole depth of the screw rod hole of the bolt with the threaded holes at the two ends should be the same as the hole depth of the bolt head hole.
Preferably, the anti-drop threaded rod with the anti-slip insections is made of steel, the metal rod is a cylinder, the anti-slip insections carried by the metal rod are matched with threads of threaded holes at two ends of a bolt with threaded holes at two ends, and the rod length of the threaded part of the metal rod is larger than the hole depth of a bolt head and the hole depth of a screw rod of the bolt with threaded holes at two ends.
Furthermore, the anti-falling connecting piece I is integrally made of rubber, the inner diameter of the rubber ring is smaller than the outer diameter of the rod cap of the anti-falling threaded rod with the anti-sliding threads, and the rubber section size of the rubber ring is determined according to the number of the connected bolts.
Further, the anti-drop threaded rods with the anti-slip insections are multiple, and the adjacent threaded rods are connected through the anti-drop connecting pieces, so that the bolts are connected.
Furthermore, the anti-drop connecting piece is integrally made of high-performance rubber, has good ageing resistance, can be used for a long time in the environment of a bridge, and avoids frequent replacement. Preferably, the second anti-falling connecting piece is integrally made of rubber, the inner diameter of the rubber hole is smaller than the outer diameter of the rod cap of the anti-falling threaded rod with the anti-sliding threads, and the rubber thickness of the rubber sheet is determined according to the number of the connected bolts.
Furthermore, the junction of the rubber ring and the rubber rope is a gradual change section, so that the tensile capacity of the anti-drop structure can be enhanced, and the junction is prevented from being torn due to stress concentration.
Furthermore, the length of the rubber rope can be changed according to the bolt intervals, and the rubber rope is reasonably arranged according to different bolt intervals. The length of the rubber rope is determined according to the bolt distance, and the section size of the rubber rope is determined according to the number of the connected bolts.
The utility model has the beneficial effects of effectively solving the problem of bolt falling in the steel structure bridge, saving manpower and material resources, improving inspection efficiency, reducing the difficulty and cost of operation and maintenance of the steel structure bridge, having the advantages of simple structure, low cost, flexible installation, convenient replacement and no influence on normal overhaul and maintenance of the high-strength bolts, having social benefit and industrial economic benefit.
Drawings
FIG. 1 is a schematic diagram of the overall connection of the present utility model;
FIG. 2 is a view showing a bolt structure with threaded holes at both ends and a detailed view;
FIG. 3 is a construction view and a detail view of an anti-drop threaded rod with anti-slip insections;
FIG. 4 is a view showing an overall construction of the anti-drop connector;
FIG. 5 is a diagram showing the overall construction of a second anti-drop connector;
the mark in the figure is 1, bolt; 11. a bolt head hole; 12. a screw hole; 2. an anti-falling threaded rod; 21. a metal rod; 22. a pole cap; 3. an anti-falling connecting piece I; 31. a rubber ring; 32. a rubber rope; 4. anti-falling connecting piece II; 41. a rubber sheet; 42. rubber holes.
Detailed Description
For further explanation of technical means and effects adopted by the present utility model, the following detailed description of the present utility model is further provided with reference to the accompanying drawings and preferred embodiments:
as shown in fig. 1 to 5: the utility model provides an assembled combined high-strength bolt anti-falling structure, wherein a bolt 1 is an M24 high-strength bolt, screw holes at two ends comprise a bolt head hole 11 and a screw hole 12, the screw holes are all cylindrical with uniform cross sections, the centers of the holes are aligned with the center line of the bolt, and the depths and the apertures of the holes are all 10mm. The anti-drop threaded rod 2 with the anti-slip insections comprises a metal rod 21 with the anti-slip insections and a rod cap 22, wherein the size of the metal rod 21 is consistent with that of the threaded hole. The first anti-falling connecting piece 3 comprises a rubber ring 31 and a rubber rope 32, the rubber material is high-performance rubber, the size of the rubber ring 31 is slightly larger than the diameter of the metal rod 21 and smaller than the diameter of the rod cap 22, and the length of the rubber rope 32 is 100mm. The second anti-falling connecting piece 4 comprises a rubber sheet 41 and rubber holes 42, the rubber material is high-performance rubber, the size of each rubber hole 42 is slightly larger than the diameter of the metal rod 21 and smaller than the diameter of the rod cap 22, and the distance between the rubber holes is 100mm. When the metal rod 21 is mounted, the rubber ring 31 is sleeved on the metal rod 21 or the metal rod 21 is penetrated through the rubber hole 42, and the metal rod 21 is screwed into the threaded hole by screwing the rod cap 22 along the threaded direction of the threaded hole by means of a wrench.
Compared with the existing 'screw detection fixing structure for bridges with anti-falling devices', the screw detection fixing structure for bridges is completely different from the prior art in anti-falling principle, and has obvious innovation. In the prior art, the rubber plug is plugged into the bolt hole, and the bolt is pulled only by friction force generated by extrusion of the rubber and the inner wall of the bolt hole, so that the bolt does not fall. The rubber can influence the friction force when the temperature changes, and the friction force is unstable; in addition, the processing error of the rubber plug also affects the friction force, thereby affecting the safety of the structure. The utility model adopts a brand new connecting structure, the inner wall of the bolt hole is innovatively designed to be a threaded inner wall by a smooth inner wall, a rubber plug is not adopted any more, an anti-falling threaded rod with threads is innovatively provided, the threaded rod and the bolt are screwed together, the bolt tension is provided by the meshing force between the threads, the meshing force is far greater than the friction force of the rubber, the performance is stable, the influence of temperature, processing errors and the like is avoided, and the anti-falling threaded rod is safe and reliable.
In addition, the rubber rope 32 is a rubber rope with a gradual change section, so that the tensile capacity of the rubber rope can be increased, and the joint with the rubber ring is prevented from being torn due to stress concentration, and the joint adopted in the prior art is in a sharp angle design, so that the device is easy to tear and lose efficacy. The length of the rubber rope 32 can be changed according to the bolt intervals, and the rubber rope is reasonably arranged according to different bolt intervals.
Finally, it should be noted that: the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way, but any modifications or equivalent variations according to the technical spirit of the present utility model remain within the scope of the present utility model as claimed.
Claims (8)
1. The utility model provides a but assembled combination formula high strength bolt anti-drop structure, includes bolt (1) that both ends open the screw hole, take anti-drop threaded rod (2) of anti-skidding insection, anti-drop connecting piece, its characterized in that, the screw hole at bolt (1) both ends is bolt head hole (11) and screw rod hole (12), and the screw hole is the constant cross section cylinder, and hole center and bolt central line alignment;
the anti-falling threaded rod (2) comprises a metal rod (21) with anti-sliding insections and a rod cap (22);
the first anti-falling connecting piece (3) comprises a rubber ring (31) and a rubber rope (32);
each threaded hole of the bolt (1) with threaded holes at two ends corresponds to one metal rod (21), the two sides of the metal rod (21) are screwed into the bolt head holes (11) and the screw holes (12) of the bolt (1) with threaded holes at two ends, a rod cap (22) is arranged above each metal rod (21), and the metal rod (21) is sleeved with a rubber ring (31) and connected with the rubber ring (31) at the same side through a rubber rope (32).
2. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the first anti-falling connecting piece (3) is replaced by a second anti-falling connecting piece (4) which comprises a rubber sheet (41) and a rubber hole (42);
in the structure, the metal rods (21) pass through the rubber holes (42) and the adjacent metal rods (21) are connected by the integral rubber sheet (41).
3. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the hole depth of the bolt head hole (11) of the bolt (1) with the threaded holes at the two ends is not larger than the thickness of the bolt head, and the hole depth of the screw rod hole (12) of the bolt (1) with the threaded holes at the two ends is the same as the hole depth of the bolt head hole (11).
4. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the anti-drop threaded rod (2) with the anti-slip insections is made of steel, the metal rod (21) is a cylinder, the anti-slip insections carried by the metal rod (21) are matched with threads of threaded holes at two ends of a bolt (1) with threaded holes at two ends, and the rod length of the threaded part of the metal rod (21) is larger than the hole depth of a bolt head hole (11) and the hole depth of a screw rod hole (12) of the bolt (1) with threaded holes at two ends.
5. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the first anti-falling connecting piece (3) is integrally made of rubber, the inner diameter of the rubber ring (31) is smaller than the outer diameter of the rod cap (22) of the anti-falling threaded rod (2) with the anti-sliding insection, and the rubber section size of the rubber ring (31) is determined according to the number of the connected bolts (1).
6. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the length of the rubber rope (32) is determined according to the bolt distance, and the section size of the rubber rope (32) is determined according to the number of the connected bolts (1).
7. The assembled high-strength bolt anti-falling structure according to claim 1, wherein: the connection part of the rubber ring (31) and the rubber rope (32) is a gradual change section.
8. The assembled high-strength bolt anti-falling structure according to claim 2, wherein: the anti-falling connecting piece II (4) is integrally made of rubber, the inner diameter of the rubber hole (42) is smaller than the outer diameter of the rod cap (22) of the anti-falling threaded rod (2) with the anti-falling threads, and the rubber thickness of the rubber sheet (41) is determined according to the number of the connected bolts (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671408.6U CN219549328U (en) | 2023-03-30 | 2023-03-30 | Assembled combined high-strength bolt anti-falling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671408.6U CN219549328U (en) | 2023-03-30 | 2023-03-30 | Assembled combined high-strength bolt anti-falling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219549328U true CN219549328U (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320671408.6U Active CN219549328U (en) | 2023-03-30 | 2023-03-30 | Assembled combined high-strength bolt anti-falling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219549328U (en) |
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2023
- 2023-03-30 CN CN202320671408.6U patent/CN219549328U/en active Active
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