CN220060222U - Expansion bolt-based connecting piece capable of preventing corrosion of concrete interface - Google Patents
Expansion bolt-based connecting piece capable of preventing corrosion of concrete interface Download PDFInfo
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- CN220060222U CN220060222U CN202321670707.4U CN202321670707U CN220060222U CN 220060222 U CN220060222 U CN 220060222U CN 202321670707 U CN202321670707 U CN 202321670707U CN 220060222 U CN220060222 U CN 220060222U
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- expansion bolt
- wall
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- nut
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- 238000005260 corrosion Methods 0.000 title claims abstract description 42
- 230000007797 corrosion Effects 0.000 title claims abstract description 15
- 239000002344 surface layer Substances 0.000 claims abstract description 17
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to the field of building fastening connectors, in particular to an expansion bolt-based concrete interface corrosion-resistant connector, which comprises an expansion bolt, a nut, an outer connecting sleeve and an anti-corrosion pad, wherein the anti-corrosion pad is sleeved at the movable end of the expansion bolt; when the anti-corrosion concrete expansion joint is used, the movable end of the expansion bolt penetrates through the concrete surface layer to be connected with the nut, and the nut abuts the anti-corrosion pad and the outer connecting sleeve on the concrete surface layer. According to the expansion bolt-based concrete interface corrosion prevention connecting piece, the nut, the expansion bolt, the outer connecting sleeve and the concrete surface layer are completely separated through the anti-corrosion pad, and the expansion bolt is separated from a corrosion environment, so that the purpose of protecting the expansion bolt is achieved.
Description
Technical Field
The utility model relates to the field of building fastening connectors, in particular to an expansion bolt-based connector for preventing concrete interface corrosion.
Background
Expansion bolts are often used in the engineering field to connect pipelines or equipment at a later stage, and the expansion bolts made of metal materials often have interface corrosion with a concrete interface under the conditions of temperature change and acid rain and salt fog environment. If the connected parts are not overhauled in time in the long-term use process, the connection strength of the connected objects can be reduced, and potential safety hazards are caused.
If the municipal sewer pipe port is connected with the anti-falling net, an expansion bolt is often required, and if the expansion bolt and a concrete interface are corroded greatly, the normal use function of the anti-falling net can be seriously affected.
Disclosure of Invention
Aiming at the problem that expansion bolts in sewer pipes are easy to corrode in the prior art, the utility model provides a connecting piece for preventing concrete interface corrosion based on the expansion bolts.
The utility model is realized by the following technical scheme:
the connecting piece comprises an expansion bolt, a nut, an outer connecting sleeve and an anti-corrosion pad, wherein the anti-corrosion pad is sleeved at the movable end of the expansion bolt; when the anti-corrosion concrete expansion joint is used, the movable end of the expansion bolt penetrates through the concrete surface layer to be connected with the nut, and the nut abuts the anti-corrosion pad and the outer connecting sleeve on the concrete surface layer.
Preferably, the anti-corrosion pad comprises a first part and a second part which are sequentially connected, wherein the inner wall of the first part is attached to the outer wall of the movable end of the expansion bolt, and the outer wall of the first part is attached to the inner wall of the outer connecting sleeve; the outer wall of the second part is attached to the inner wall of the outer connecting sleeve, a yielding counter bore is formed in one end, far away from the first part, of the second part, and the nut is positioned in the yielding counter bore; and the space reserved between the abdication counter bore and the nut is sealed by adopting gypsum or a rubber heat preservation layer.
Preferably, the free end of the expansion thread must not extend beyond the relief counterbore.
Preferably, the outer connecting sleeve comprises a bottom annular piece and a hollow cylindrical piece which are connected, wherein the inner wall of the bottom annular piece is attached to the outer wall of the first part, and the two sides of the bottom annular piece along the axis are attached to the concrete surface layer and the outer wall of the second part respectively; the inner wall of the hollow cylindrical member is attached to the outer wall of the anti-corrosion pad.
Preferably, the inner wall of the hollow cylindrical member is bonded to the outer wall of the second portion by an inclined surface structure.
Preferably, one end of the hollow cylindrical member, which is far away from the bottom annular member, is also provided with a tubular connecting member, and the tubular connecting member is connected with an external horizontal connecting member.
Preferably, the external horizontal connecting piece comprises a first connecting part, a variable cross-section part and a second connecting part which are connected, one end of the first connecting part is detachably connected with the tubular connecting piece, the other end of the first connecting part is connected with the variable cross-section part, and the other end of the variable cross-section part is connected with the second connecting part.
Preferably, the hollow cylindrical member is further provided with a tubular connecting member at one end far away from the bottom annular member, and a detachable connecting ring is arranged on the tubular connecting member and is used for connecting an external net structure.
Preferably, the outer side of the outer connecting sleeve is also provided with a detachable connecting end plate.
Preferably, the connecting end plate comprises an external ring and an external connecting plate, the external ring is detachably connected with the outer wall of the external connecting sleeve, and the external connecting plate is used for connecting an external structure.
Compared with the prior art, the utility model has the following beneficial effects:
according to the expansion bolt-based concrete interface corrosion prevention connecting piece, the nut, the expansion bolt, the external connecting sleeve and the concrete surface layer are completely separated through the anti-corrosion pad, the gypsum or the rubber heat insulation layer, and the expansion bolt is separated from a corrosion environment, so that the purpose of protecting the expansion bolt is achieved.
After the connected object is connected with the connecting piece provided by the utility model, the connected object or air can not be directly contacted with the nut and the expansion bolt, the temperature of the connected object or air can not be conducted to the expansion bolt along the tubular connecting piece and the outer connecting sleeve, namely, the nut and the expansion bolt can not be contacted with the outside to form temperature flow and chemical corrosion ions, so that the interface area between the expansion bolt and the concrete can not be corroded due to the thermal bridge effect or chemical corrosion, and the expansion bolt can be prevented from being corroded and loosened in the long-term use process.
Drawings
Fig. 1 is a front view of embodiment 1;
FIG. 2 is a left side view of example 1;
FIG. 3 is a cross-sectional view of example 1;
FIG. 4 is an elevation sectional view of embodiment 1;
FIG. 5 is a schematic view of the external horizontal connector of example 1;
FIG. 6 is a schematic diagram of example 2;
FIG. 7 is a perspective view of example 3;
fig. 8 is a perspective sectional view of example 3.
In the figure, 1, an expansion bolt; 2. a concrete surface layer; 3. a tubular connecting member; 31. an outer connecting plate; 32. a connecting plate; 4. an anti-corrosion pad; 41. a first section; 42. a second section; 43. giving up the counter bore; 5. a first connection portion; 51. reinforcing ribs; 6. a variable cross-section portion; 7. a second connecting portion; 8. a connecting ring; 9. an outer connecting sleeve; 10. a bottom ring; 11. a hollow cylindrical member; 12. and (3) a nut.
Detailed Description
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
Example 1
The utility model discloses an expansion bolt-based concrete interface corrosion prevention connecting piece, which comprises an expansion bolt 1, a nut 12, an outer connecting sleeve 9 and an anti-corrosion pad 4, wherein the anti-corrosion pad 4 is sleeved at the movable end of the expansion bolt 1, the outer connecting sleeve 9 is sleeved at the outer side of the anti-corrosion pad 4, and the anti-corrosion pad 4 is made of rubber materials.
Referring to fig. 3, the anti-corrosion pad 4 includes a first portion 41 and a second portion 42 connected in sequence, an inner wall of the first portion 41 is attached to an outer wall of the movable end of the expansion bolt 1, and an outer wall of the first portion 41 is attached to an inner wall of the outer connecting sleeve 9; the outer wall of the second part 42 is attached to the inner wall of the outer connecting sleeve 9, a yielding counter bore 43 is formed in one end, away from the first part 41, of the second part 42, the nut 12 is located in the yielding counter bore 43, and a space reserved between the yielding counter bore 43 and the nut 12 is sealed by adopting gypsum or a rubber heat insulation layer.
The outer connecting sleeve 9 comprises a bottom annular piece 10 and a hollow cylindrical piece 11 which are connected, wherein the inner wall of the bottom annular piece 10 is jointed with the outer wall of the first part 41, and the two sides of the bottom annular piece 10 along the axis are respectively jointed with the concrete surface layer 2 and the outer wall of the second part 42; the inner wall of the hollow cylindrical member 11 is bonded to the outer wall of the second portion 42 by a beveled structure.
The diameter of the outer wall of the hollow cylindrical member 11 gradually increases from the end near the bottom ring member 10 to the end far from the bottom ring member 10, i.e., the hollow cylindrical member 11 takes the shape of a frustum.
Referring to fig. 4, the end of the hollow cylindrical member 11 remote from the bottom annular member 10 is further provided with a tubular connecting member 3, and the tubular connecting member 3 is connected with an external horizontal connecting member. Referring to fig. 5, the external horizontal connector includes a first connecting portion 5, a variable cross-section portion 6 and a second connecting portion 7 connected, one end of the first connecting portion 5 is detachably connected to the tubular connector 3, the other end is connected to the variable cross-section portion 6, and the other end of the variable cross-section portion is connected to the second connecting portion 7. In this embodiment, the first connection portion 5 is in threaded connection with the tubular connection member 3, or may be in a clamping, jogging, binding or other connection form; the first connecting portion 5 is hollow, and is internally provided with a cross-shaped reinforcing rib 51 for supporting. The second connection portion 7 may be used for connection with an exposed structure such as an air conditioner bracket, a steel plate, or the like.
When in use, the movable end of the expansion bolt 1 penetrates through the concrete surface layer 2 and is connected with the nut 12, the nut 12 tightly supports the anti-corrosion pad 4 and the outer connecting sleeve 9 on the concrete surface layer 2, and the movable end of the expansion thread cannot extend out of the abdication counter bore 43.
When in use, the end surfaces of the nut 12 and the expansion bolt 1 far away from the concrete surface layer 2 are also coated with gypsum or embedded with a rubber heat insulation layer, so as to prevent the end surfaces of the nut 12 and the expansion bolt 1 far away from the concrete surface layer 2 from being in direct contact with the outside air.
Example 2
The difference between this embodiment and embodiment 1 is that, referring to fig. 6, the end of the hollow cylindrical member 11 remote from the bottom annular member 10 is further provided with a tubular connecting member 3, and the tubular connecting member 3 is provided with a detachable connecting ring 8, and the connecting ring 8 is used for connecting an external mesh structure. In this embodiment, the connecting ring 8 is an open-buckle type, the tubular connecting piece 3 is provided with a connecting hole, the open-buckle type connecting ring 8 is arranged at the connecting hole in a penetrating manner, and the connecting ring 8 can be arranged in an open manner and then fixed in a welding manner.
Example 3
The difference between this embodiment and embodiment 1 is that, referring to fig. 7 and 8, a detachable connection end plate is further provided on the outer side of the outer connecting sleeve 9, the connection end plate includes an external ring 32 and an external plate 31, the external ring 32 is detachably connected with the outer wall of the outer connecting sleeve 9, and an external hole is provided on the external plate 31 for connecting an external structure. In this embodiment, the outer connecting ring 32 is screwed with the outer wall of the outer connecting sleeve 9, and may be pressure connection, clamping connection or other detachable connection. The external hole of the external connection plate 31 can be a closed round hole or a semi-closed open hole, and can be used for connecting an external net or other flexible connecting pieces.
The utility model relates to an expansion bolt-based concrete interface corrosion prevention connecting piece, which is implemented according to the following principle: after the connected object is connected with the connecting piece of the utility model, the connected object or air can not directly contact with the nut 12 and the expansion bolt 1, the temperature of the connected object or air can not be conducted to the expansion bolt 1 along the tubular connecting piece 3 and the outer connecting sleeve 9, namely, the nut 12 and the expansion bolt 1 can not contact with the outside to form temperature flow and chemical corrosion ions, so that the interface area between the expansion bolt 1 and the concrete can not be corroded due to the thermal bridge effect or chemical corrosion, and the expansion bolt 1 can be prevented from being corroded and loosened in the long-term use process.
According to the expansion bolt-based concrete interface corrosion prevention connecting piece, the nut 12, the expansion bolt 1, the outer connecting sleeve 9 and the concrete surface layer 2 are completely separated through the anti-corrosion pad 4, and the expansion bolt 1 is separated from a corrosion environment, so that the purpose of protecting the expansion bolt 1 is achieved.
The foregoing description of the preferred embodiment of the present utility model is not intended to limit the technical solution of the present utility model in any way, and it should be understood that the technical solution can be modified and replaced in several ways without departing from the spirit and principle of the present utility model, and these modifications and substitutions are also included in the protection scope of the claims.
Claims (10)
1. The connecting piece is characterized by comprising an expansion bolt (1), a nut (12), an outer connecting sleeve (9) and an anti-corrosion pad (4), wherein the anti-corrosion pad (4) is sleeved at the movable end of the expansion bolt (1), and the outer connecting sleeve (9) is sleeved at the outer side of the anti-corrosion pad (4); when the anti-corrosion device is used, the movable end of the expansion bolt (1) penetrates through the concrete surface layer (2) to be connected with the nut (12), and the nut (12) abuts the anti-corrosion pad (4) and the outer connecting sleeve (9) on the concrete surface layer (2).
2. The expansion bolt-based concrete interfacial corrosion prevention connecting piece according to claim 1, wherein the anti-corrosion pad (4) comprises a first part (41) and a second part (42) which are sequentially connected, the inner wall of the first part (41) is jointed with the outer wall of the movable end of the expansion bolt (1), and the outer wall of the first part (41) is jointed with the inner wall of the outer connecting sleeve (9); the outer wall of the second part (42) is attached to the inner wall of the outer connecting sleeve (9), a yielding counter bore (43) is formed in one end, far away from the first part (41), of the second part (42), and the nut (12) is positioned in the yielding counter bore (43); the space left between the abdication counter bore (43) and the nut (12) is sealed by gypsum or a rubber heat insulation layer.
3. Expansion bolt based concrete interface corrosion prevention connection according to claim 2, characterized in that the free end of the expansion thread must not protrude out of the relief counterbore (43).
4. Expansion bolt based concrete interface corrosion prevention connection according to claim 2, characterized in that the outer connection sleeve (9) comprises a bottom ring (10) and a hollow cylindrical member (11) connected, the inner wall of the bottom ring (10) being in abutment with the outer wall of the first part (41), the bottom ring (10) being in abutment with the outer wall of the concrete surface layer (2) and the second part (42) respectively along both sides of the axis; the inner wall of the hollow column-shaped piece (11) is attached to the outer wall of the anti-corrosion pad (4).
5. The expansion bolt based concrete interfacial corrosion preventing joint as claimed in claim 4, wherein the inner wall of the hollow cylindrical member (11) is bonded to the outer wall of the second portion (42) using a slope structure.
6. Expansion bolt based concrete interface corrosion prevention connection according to claim 4, characterized in that the end of the hollow cylindrical member (11) remote from the bottom ring member (10) is further provided with a tubular connection member (3), the tubular connection member (3) being connected with an external horizontal connection member.
7. The expansion bolt-based concrete interfacial corrosion prevention connecting member as claimed in claim 6, wherein the external horizontal connecting member comprises a first connecting portion (5), a variable cross-section portion (6) and a second connecting portion (7) connected, one end of the first connecting portion (5) is detachably connected to the tubular connecting member (3), the other end is connected to the variable cross-section portion (6), and the other end of the variable cross-section portion is connected to the second connecting portion (7).
8. Expansion bolt based concrete interface corrosion prevention connecting piece according to claim 4, characterized in that the end of the hollow cylindrical piece (11) remote from the bottom ring piece (10) is also provided with a tubular connecting piece (3), the tubular connecting piece (3) is provided with a detachable connecting ring (8), and the connecting ring (8) is used for connecting an external structure.
9. Expansion bolt based concrete interface corrosion protection connection according to claim 1, characterized in that the outer side of the outer connection sleeve (9) is also provided with a detachable connection end plate.
10. The expansion bolt-based concrete interface corrosion prevention connecting piece according to claim 9, wherein the connecting end plate comprises an external ring (32) and an external plate (31), the external ring (32) is detachably connected with the outer wall of the external connecting sleeve (9), and an external hole is formed in the external plate (31) for connecting an external structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321670707.4U CN220060222U (en) | 2023-06-28 | 2023-06-28 | Expansion bolt-based connecting piece capable of preventing corrosion of concrete interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321670707.4U CN220060222U (en) | 2023-06-28 | 2023-06-28 | Expansion bolt-based connecting piece capable of preventing corrosion of concrete interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220060222U true CN220060222U (en) | 2023-11-21 |
Family
ID=88789413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321670707.4U Active CN220060222U (en) | 2023-06-28 | 2023-06-28 | Expansion bolt-based connecting piece capable of preventing corrosion of concrete interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220060222U (en) |
-
2023
- 2023-06-28 CN CN202321670707.4U patent/CN220060222U/en active Active
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