CN212836280U - Take assembled grout sleeve of lightning protection downlead function - Google Patents
Take assembled grout sleeve of lightning protection downlead function Download PDFInfo
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- CN212836280U CN212836280U CN202021515640.3U CN202021515640U CN212836280U CN 212836280 U CN212836280 U CN 212836280U CN 202021515640 U CN202021515640 U CN 202021515640U CN 212836280 U CN212836280 U CN 212836280U
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Abstract
The utility model provides a take assembled grout sleeve of lightning protection downlead function, grout sleeve includes: a metal sleeve; the metal sleeve is provided with a grouting hole and a slurry discharging hole; one upper end part of the metal sleeve is connected with a first bendable metal piece, and the other upper end part of the metal sleeve is connected with a second bendable metal piece; and a first sealing ring is arranged at one inner end part of the metal sleeve, and a second sealing ring is arranged at the other inner end part of the metal sleeve. The utility model discloses simple to operate, energy-concerving and environment-protective can reduce the risk that the welding carelessly produced the conflagration.
Description
Technical Field
The utility model relates to a grout sleeve technical field, concretely relates to take assembled grout sleeve of lightning protection downlead function.
Background
In the fabricated building, the pre-supporting beams, the pre-supporting plates, the pre-supporting columns and the like are all completed in a prefabricating factory and are connected in a splicing mode on a construction site. Wherein, the connection part is connected by adopting a metal grouting sleeve. And after the hoisting of the gap between the steel bar and the sleeve is ensured to be effectively inserted into the sleeve, and after the hoisting is finished, liquid grouting material is injected into the gap from the grouting hole exposed out of the surface of the pre-support frame, and the residual part flows out of the grout discharging hole after the gap is filled.
At present, the lightning protection system of the building in China usually adopts at least 2 columns of main bars with more than 16 phi or 4 columns of main bars with more than 12 phi as lightning protection down leads, the main bars are vertically communicated and connected with a foundation grounding device to effectively guide lightning current into the ground and release the lightning current, the steel bars in each beam of a floor in a cast-in-situ mode usually adopt binding, lapping, welding and other modes, can be used as a reliable connecting line for equipotential connection, but the grouting sleeve connection mode adopted by the prefabricated columns and beams in the fabricated building meets the requirement of structural reliability, however, the grouting material is a non-conductive material, so that the steel bars in the building columns and the beams are used as building lightning protection down leads and equipotential connecting lines, the conduction performance of the building lightning protection is difficult to be ensured to be always through, the lightning current or the fault current of the electric equipment cannot be effectively conducted into the ground, and the occurrence of lightning stroke damage or human body electric shock accidents of the electric and electronic equipment in the building is increased.
Disclosure of Invention
Technical problem to prior art exists, the utility model provides a take assembled grout sleeve of lightning protection downlead function to form a complete lightning grounding system in the fabricated building.
The utility model provides a pair of take assembled grout sleeve of lightning protection downlead function, grout sleeve includes: a metal sleeve; the metal sleeve is provided with a grouting hole and a slurry discharging hole; one upper end part of the metal sleeve is connected with a first bendable metal piece, and the other upper end part of the metal sleeve is connected with a second bendable metal piece; and a first sealing ring is arranged at one inner end part of the metal sleeve, and a second sealing ring is arranged at the other inner end part of the metal sleeve.
Preferably, the thickness of the first bendable metal piece and the thickness of the second bendable metal piece are not less than 4mm, the length of the first bendable metal piece and the length of the second bendable metal piece are not less than 25mm, and the contact length of the first bendable metal piece and the contact length of the second bendable metal piece and the metal sleeve are both 5-10 mm.
Preferably, the first sealing ring and the second sealing ring are both made of rubber materials.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses simple to operate, energy-concerving and environment-protective can reduce the risk that the welding carelessly produced the conflagration.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure, 1, a metal sleeve; 2. grouting holes; 3. a slurry discharge hole; 4. a first bendable metal piece; 5. a second bendable metal piece; 6. a first seal ring; 7. a second seal ring; 8. prefabricating a steel bar; 9. reserving a steel bar; 10. and (5) grouting material.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Fig. 1 shows an embodiment of the present invention.
As shown in fig. 1, a fabricated grout sleeve with lightning down conductor protection function, the grout sleeve includes: a metal sleeve 1; the upper end of the metal sleeve 1 is provided with a grouting hole 2 and a slurry discharging hole 3; one upper end part of the metal sleeve 1 is connected with a first bendable metal piece 4, and the other upper end part is connected with a second bendable metal piece 5; one inner end part of the metal sleeve is provided with a first sealing ring 6, and the other inner end part is provided with a second sealing ring 7 so as to provide tightness for subsequent grouting operation.
The thickness of the first bendable metal piece 4 and the thickness of the second bendable metal piece 5 are both 4mm, the length of the first bendable metal piece is both 25mm, and the contact length of the first bendable metal piece 4 and the second bendable metal piece 5 is both 5 mm; the first seal ring 6 and the second seal ring 7 are both made of rubber material.
In the embodiment, when the steel bar is installed, at least 2 steel bars with the specification of more than 16 phi or more than 4 steel bars with the specification of more than 12 phi are selected to be used on the outer side of a column and a beam, one end of a metal sleeve 1 is sleeved on a prefabricated steel bar 8, a first sealing ring 6 is placed, a first bendable metal piece 4 surrounds the prefabricated steel bar 8, the prefabricated steel bar 8 is tightly and firmly wrapped by a clamp in a bending mode, then a reserved steel bar 9 is inserted into the other end of the metal sleeve 1, a second sealing ring 7 is placed, a second bendable metal piece 5 surrounds the reserved steel bar 9, and the reserved steel bar 9 is tightly and firmly wrapped by the clamp in the bending mode; the grouting material 10 is filled in the grouting hole 2, when air in the metal sleeve 1 is removed, the grouting material 10 flows out of the grout outlet 3, the grouting material 10 is indicated to be filled in the inner cavity of the metal sleeve 1, the grouting material 10 is dry mixed for grouting connection of the steel sleeve, the dry mixed is formed by mixing cement serving as a basic material, fine aggregate, an additive and other materials, and the dry mixed material is a non-metal insulating material and cannot conduct electricity.
In the prior art, the grouting material 10 completely wraps the prefabricated steel bars 8 and the reserved steel bars 9 in the metal sleeve 1, so that the requirement of structural stability is met, but the prefabricated steel bars 8 and the reserved steel bars 9 cannot be effectively contacted with the inner wall of the metal sleeve 1 even if the steel bar limiting baffle is arranged in the metal sleeve 1, and therefore, the current caused by lightning current introduced from a roof or electrical faults is difficult to be led into the ground through the steel bars in columns and beams; this embodiment increases the design of the metalwork of can buckling in current structure, when breaking down when thunderbolt or floor electrical equipment, the current transfer process is as follows: the roof lightning receiving net → the prefabricated steel bar 8 → the first bendable metal piece 4 → the metal sleeve 1 → the second bendable metal piece 5 → the reserved steel bar 9 for guiding the current into the ground, thereby forming a complete lightning protection grounding system.
The installation is convenient, energy-saving and environment-friendly, and the risk of fire disaster caused by careless welding can be reduced by adopting the installation method on a construction site.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.
Claims (3)
1. The utility model provides a take assembled grout sleeve of lightning protection downlead function which characterized in that, grout sleeve includes: a metal sleeve; the metal sleeve is provided with a grouting hole and a slurry discharging hole; one upper end part of the metal sleeve is connected with a first bendable metal piece, and the other upper end part of the metal sleeve is connected with a second bendable metal piece; and a first sealing ring is arranged at one inner end part of the metal sleeve, and a second sealing ring is arranged at the other inner end part of the metal sleeve.
2. The fabricated grout sleeve of claim 1, wherein the first bendable metal member and the second bendable metal member have a thickness of no less than 4mm, a length of no less than 25mm, and a contact length with the metal sleeve of 5-10 mm.
3. The fabricated grout sleeve of claim 1, wherein the first and second sealing rings are made of a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021515640.3U CN212836280U (en) | 2020-07-28 | 2020-07-28 | Take assembled grout sleeve of lightning protection downlead function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021515640.3U CN212836280U (en) | 2020-07-28 | 2020-07-28 | Take assembled grout sleeve of lightning protection downlead function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212836280U true CN212836280U (en) | 2021-03-30 |
Family
ID=75121780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021515640.3U Active CN212836280U (en) | 2020-07-28 | 2020-07-28 | Take assembled grout sleeve of lightning protection downlead function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212836280U (en) |
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2020
- 2020-07-28 CN CN202021515640.3U patent/CN212836280U/en active Active
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