CN109882492B - Rust-proof protective sleeve for foundation bolt of power transmission tower - Google Patents
Rust-proof protective sleeve for foundation bolt of power transmission tower Download PDFInfo
- Publication number
- CN109882492B CN109882492B CN201811517682.8A CN201811517682A CN109882492B CN 109882492 B CN109882492 B CN 109882492B CN 201811517682 A CN201811517682 A CN 201811517682A CN 109882492 B CN109882492 B CN 109882492B
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- drying device
- sheath
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- groove
- sealing
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 61
- 238000001035 drying Methods 0.000 claims abstract description 58
- 239000002274 desiccant Substances 0.000 claims abstract description 41
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 15
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000003973 paint Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- Drying Of Gases (AREA)
Abstract
The utility model provides an antirust protective sleeve for foundation bolts of a power transmission tower, which comprises a protective sleeve and a drying device filled with drying agents, wherein a nut groove penetrating through the lower end face of the protective sleeve, a connecting hole in threaded connection with a bolt head and a drying device groove penetrating through the upper end face of the protective sleeve are sequentially arranged in the middle of the protective sleeve from bottom to top, the drying device is detachably connected to the drying device groove, the drying device is in sealing connection with the upper end face of the protective sleeve, and a sealing gasket in sealing contact with the surface of a foundation flange is arranged on the lower end face of the protective sleeve. According to the utility model, external moisture can be effectively isolated from entering the sheath, and meanwhile, the drying device can absorb the moisture in the sheath, so that the foundation bolt is in a dry environment, and a good rust-proof effect is achieved on the foundation bolt.
Description
Technical Field
The utility model relates to a bolt protection sleeve, in particular to an antirust protection sleeve for foundation bolts of a power transmission tower.
Background
A pylon is a device for fixing a power transmission cable. The bottom of the power transmission electric tower is provided with a foundation, and the foundation is fixed on a concrete foundation through foundation bolts. The bolt heads and nuts of the foundation bolts are exposed to the outside, and are easy to rust after long-term exposure to sunlight and rain. Once the anchor bolts are rusted, the connection strength between the bottom and the bottom surface of the power transmission tower can be reduced, so that the stability of the power transmission tower is reduced, and even the risk of collapse exists. The common rust-proof measures adopted for the foundation bolts at present are generally to paint rust-proof paint on the foundation bolts or to add a protective sleeve outside the foundation bolts. After a period of time, the rust-proof paint is easy to age and fall off, so that the rust-proof paint has poor rust-proof effect, and the paint painting process is time-consuming and labor-consuming, so that the labor intensity of operators is increased. The traditional mode of adding a protective sleeve outside the foundation bolt is also not ideal in rust prevention effect. For example, chinese patent publication No. CN 203585040U, the name of the utility model is an anchor bolt protecting sleeve, which comprises a sealing tube, wherein the lower end surface of the sealing tube is provided with a circle of protruding edge extending outwards, and the lower end surface of the protruding edge is fixedly connected with a rubber sealing pad; the upper end surface of the sealing tube is provided with a sealing cover; a circle of annular boss is fixedly arranged on the inner side wall of the middle part of the sealing tube, and an inner hole of the boss is provided with an inner thread matched with the outer thread of the foundation bolt; a plurality of oil holes penetrating up and down are arranged in the boss. The utility model has the following defects: the utility model has insufficient tightness, water or water vapor easily enters the sealing tube to rust the foundation bolt, so that the utility model has unsatisfactory rust-proof effect.
Disclosure of Invention
The utility model aims to solve the problem that the traditional foundation bolt protective sleeve is not ideal in rust-proof effect on foundation bolts, and provides the rust-proof protective sleeve for the foundation bolts of the power transmission tower, which can generate good rust-proof effect on the foundation bolts.
The utility model aims at realizing the following technical scheme: the utility model provides a power transmission tower rag bolt rust-resistant protective sheath, includes the sheath and is equipped with the drying device of drier, from down upwards set gradually the nut groove that link up the sheath lower terminal surface in the middle of the sheath, with the connecting hole of bolt head threaded connection and the drying device groove that link up the sheath up end, drying device detachable connection is on the drying device groove, sealing connection between drying device and the sheath up end, the terminal surface is provided with the sealed pad with rag flange surface sealing contact under the sheath.
When the sealing gasket is used, the sealing gasket is tightly contacted with the surface of the foundation flange only by screwing the connecting hole arranged in the middle of the sheath with the bolt head. The nut groove has the effect that when the sheath is sleeved on the foundation bolt, the nut can smoothly enter the sheath. The sealing gasket has the functions of sealing the bottom of the sheath and the surface of the foundation flange, isolating external rainwater, water vapor and the like and preventing the foundation bolts from being rusted. The drying device is internally provided with a drying agent, so that moisture in the sheath can be absorbed, a dry environment is arranged in the sheath, and the corrosion speed of the foundation bolt is greatly reduced. The drying device is detachably connected with the drying device groove, so that the drying device is conveniently taken down to replace the drying agent in the drying device groove. The desiccant in the drying device is only required to be replaced regularly, so that a good antirust effect can be achieved.
Preferably, the surface of the connecting hole is provided with a first internal thread matched with the bolt head. Through the cooperation of first internal thread and the external screw thread on the bolt head for the sheath can be connected and fix outside the rag bolt.
Preferably, the drying device comprises a connecting cover and a drying agent cylinder for placing drying agent, wherein the connecting cover comprises an end cover and a connecting cylinder connected to the lower end surface of the end cover, the diameter of the lower end surface of the end cover is larger than the opening diameter of a drying device groove, the outer ring surface of the connecting cylinder is provided with external threads, and the inner surface of the drying device groove is provided with second internal threads matched with the external threads; one end of the drying agent cylinder is opened, the other end of the drying agent cylinder is provided with a plurality of through holes, one end of the opening of the drying agent cylinder is inserted into the connecting cylinder, and the outer annular surface of the drying agent cylinder is in interference contact with the inner annular surface of the connecting cylinder. The drying device is in threaded connection with the drying device groove, so that the drying device is conveniently taken down to replace the drying agent in the drying device groove. The through holes enable the drying agent to be communicated with the inside of the sheath, so that the drying agent can absorb moisture in the air inside the sheath. When the drying agent is replaced, the drying device is only required to be taken down from the sheath, the drying agent cylinder is pulled out from the connecting cover, a new drying agent is replaced in the drying agent cylinder, the drying agent cylinder is inserted into the connecting cover, and finally the whole drying device is installed on the sheath. The whole replacement process is simple and convenient, and good rust prevention effect can be achieved only by replacing the drying agent in the drying device regularly.
Preferably, a sealing ring in sealing contact with the upper end face of the sheath is arranged on the lower end face of the end cover. The sealing ring has the function of enabling the drying device to be in sealing connection with the upper end face of the sheath, and effectively isolating outside moisture.
Preferably, a plurality of anti-slip grooves are formed in the side face of the end cover. The anti-slip groove has the function of increasing the friction between the side surface of the end cover and a human hand, so that the end cover is convenient to screw.
Preferably, the sealing gasket is annular, the sealing gasket is arranged along the lower end face of the sheath, the inner side of the sealing gasket extends into the lower end face of the sheath, and an annular pressing ring is arranged above the inner side of the sealing gasket; the nut groove inner surface is provided with an annular boss positioned above the inner side of the sealing gasket, and a compression spring is arranged between the annular boss and the pressing ring. The compression spring applies downward compression force to the inner side of the sealing gasket, so that the sealing effect is improved, and even if the sheath loosens between the bottom and the foundation flange after long-time use, the inner side of the sealing gasket can be in close contact with the surface of the foundation flange under the action of the compression spring, and a good sealing effect can be achieved.
Preferably, the lower end face of the sheath is provided with an annular groove, the upper surface of the sealing gasket is provided with an annular protruding part matched with the groove, and the protruding part is embedded into the groove. Through this kind of connected mode, can increase the firmness that sealed pad and sheath bottom are connected.
The beneficial effects of the utility model are as follows: according to the utility model, external moisture can be effectively isolated from entering the sheath, and meanwhile, the drying device can absorb the moisture in the sheath, so that the foundation bolt is in a dry environment, and a good rust-proof effect is achieved on the foundation bolt.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 2.
Fig. 4 is a schematic structural view of the drying apparatus.
Fig. 5 is a schematic structural view of the connection cap.
Fig. 6 is a schematic view of the structure of the desiccant cartridge.
Fig. 7 is a schematic view of the structure in the mounted state of the present utility model.
In the figure: 1. the device comprises a sheath, 2, a sealing gasket, 3, a connecting cover, 4, a sealing ring, 5, a drying agent cylinder, 6, a nut hole, 7, a connecting hole, 8, a drying device groove, 9, a pressing ring, 10, a pressing spring, 11, a bolt head, 12, a nut, 13 and a foundation flange.
Detailed Description
The utility model is further described below by means of specific embodiments in connection with the accompanying drawings.
Examples: as shown in fig. 1 to 7, an anti-rust protection sleeve for foundation bolts of a power transmission tower comprises a protection sleeve 1 and a drying device filled with drying agent. The sheath 1 is cylindrical in shape. The upper end of the sheath 1 is arc-shaped. A round upper end face is arranged in the middle of the upper end of the sheath 1. The middle of the sheath 1 is provided with a nut groove 6, a connecting hole 7 and a drying device groove 8 from bottom to top in sequence. The nut groove 6 penetrates the lower end surface of the sheath 1. The diameter of the nut groove 6 is larger than the diameter of the nut 12. The connection hole 7 is provided between the nut groove 6 and the drying device groove 8. The two ends of the connecting hole 7 are respectively communicated with the nut groove 6 and the drying device groove 8. The connecting hole 7 is in threaded connection with the bolt head 11. The connecting hole 7 is provided with a first internal thread matched with the bolt head 11 box. The drying device groove 8 penetrates through the upper end face of the sheath 1. The cross section of the drying device groove 8 is round. The side of the drying device tank 8 is provided with a second internal thread.
And the drying device groove 8 is detachably connected with a drying device. The drying device is connected with the drying device groove 8 through threads. The drying device comprises a connecting cover 3 and a drying agent cartridge 5 for placing a drying agent. The connecting cover 3 comprises an end cover and a connecting cylinder. The end cover is a cylinder. The diameter of the lower end face of the end cover is larger than the diameter of the opening of the drying device groove 8. The side of the end cover is provided with a plurality of anti-slip grooves. The lower end face of the end cover is provided with a sealing ring 4. The sealing ring 4 is in sealing contact with the upper end face of the sheath 1. The connecting cylinder is arranged on the lower end face of the end cover. The connecting cylinder is of a circular cylindrical structure. The outer ring surface of the connecting cylinder is provided with external threads matched with the second internal threads. The drying agent cylinder 5 has a cylindrical structure with one end open and the other end closed. The closed end of the drying agent cylinder 5 is provided with a plurality of through holes. A desiccant is disposed within the desiccant cartridge. The diameter of the through hole is smaller than the diameter of the desiccant particles. One end of the opening of the drying agent cylinder 5 is inserted into the connecting cylinder, and the outer annular surface of the drying agent cylinder 5 is in interference contact with the inner annular surface of the connecting cylinder.
The lower end face of the sheath 1 is provided with a sealing gasket 2 in sealing contact with the surface of the foundation flange 13. The sealing gasket 2 is in a circular ring shape. The gasket 2 is arranged along the lower end face of the sheath. An annular groove is formed in the lower end face of the sheath 1. The upper surface of the sealing gasket 2 is provided with an annular protruding part matched with the groove, and the protruding part is embedded into the groove. The inner side of the gasket 2 extends into the lower end face of the jacket 1. An annular pressing ring 9 is arranged above the inner side of the sealing gasket 2. The pressing ring 9 presses on the inner upper part of the sealing gasket. The inner surface of the nut groove 6 is provided with an annular boss positioned above the inner side of the sealing gasket 2. The annular boss protrudes into the nut groove. A compression spring 10 is arranged between the annular boss and the pressing ring 9. In this embodiment, the compression springs 10 are provided with six in total. The six hold-down springs 10 are uniformly arranged along the circumferential direction of the annular boss.
When the sealing gasket is used, the sealing gasket is tightly contacted with the surface of the foundation flange only by screwing the connecting hole arranged in the middle of the sheath with the bolt head. The diameter of the nut groove is larger than that of the nut, so that the nut can smoothly enter the sheath when the sheath is sleeved on the foundation bolt. The sealing gasket has the functions of sealing the bottom of the sheath and the surface of the foundation flange, isolating external rainwater, water vapor and the like and preventing the foundation bolts from being rusted. The compression spring applies downward compression force to the inner side of the sealing gasket, so that the sealing effect is improved, and even if the sheath loosens between the bottom and the foundation flange after long-time use, the inner side of the sealing gasket can be in close contact with the surface of the foundation flange under the action of the compression spring, and a good sealing effect can be achieved. The drying device is internally provided with a drying agent, so that moisture in the sheath can be absorbed, a dry environment is arranged in the sheath, and the corrosion speed of the foundation bolt is greatly reduced. The drying device is in threaded connection with the drying device groove, so that the drying agent can be conveniently replaced. When the drying agent is replaced, the drying device is only required to be taken down from the sheath, the drying agent cylinder is pulled out from the connecting cover, a new drying agent is replaced in the drying agent cylinder, the drying agent cylinder is inserted into the connecting cover, and finally the whole drying device is installed on the sheath. The whole replacement process is simple and convenient, and good rust prevention effect can be achieved only by replacing the drying agent in the drying device regularly.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The utility model provides a power transmission tower rag bolt rust protection cover which characterized in that: including sheath (1) and drying device who is equipped with the drier, nut groove (6) that link up terminal surface under sheath (1), connecting hole (7) and the drying device groove (8) that link up sheath up end up from last having set gradually down in the middle of sheath (1), drying device detachable connection is on drying device groove (8), sealing connection between drying device and the sheath (1) up end, terminal surface is provided with sealing pad (2) with ground flange (13) surface sealing contact under sheath (1), drying device includes connecting cover (3) and is used for placing drier section of thick bamboo (5) of drier, drier section of thick bamboo (5) open end grafting is in the connecting cylinder, the outer ring face of drier section of thick bamboo (5) and the interior ring face interference contact of connecting cylinder.
2. The power transmission tower foundation bolt rust protection sleeve according to claim 1, wherein the surface of the connecting hole (7) is provided with first internal threads matched with the bolt head (11).
3. The power transmission tower foundation bolt rust protection sleeve according to claim 1, wherein the connecting cover (3) comprises an end cover and a connecting cylinder connected to the lower end surface of the end cover, the diameter of the lower end surface of the end cover is larger than the opening diameter of a drying device groove, the outer ring surface of the connecting cylinder is provided with external threads, and the inner surface of the drying device groove is provided with second internal threads matched with the external threads; one end of the drying agent cylinder (5) is opened, the other end of the drying agent cylinder is provided with a plurality of through holes, and the appearance of the sheath (1) is a cylinder.
4. A power pylon foundation bolt rust protection cover according to claim 3, wherein the lower end face of the end cap is provided with a sealing ring (4) in sealing contact with the upper end face of the cover (1).
5. A power pylon foundation bolt rust protection cover according to claim 3, wherein the side of the end cap is provided with a plurality of anti-slip grooves.
6. A power transmission tower foundation bolt rust protection sleeve according to claim 3, wherein the sealing gasket (2) is annular, the sealing gasket (2) is arranged along the lower end face of the sleeve (1), the inner side of the sealing gasket (2) extends into the lower end face of the sleeve, and an annular pressing ring (9) is arranged above the inner side of the sealing gasket (2); the inner surface of the nut groove (6) is provided with an annular boss positioned above the inner side of the sealing gasket (2), and a compression spring (10) is arranged between the annular boss and the pressing ring (9).
7. The antirust protective sleeve for the foundation bolts of the power transmission towers, as claimed in claim 6, is characterized in that an annular groove is formed in the lower end face of the protective sleeve (1), an annular protruding portion matched with the groove is formed in the upper surface of the sealing gasket (2), and the protruding portion is embedded into the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517682.8A CN109882492B (en) | 2018-12-12 | 2018-12-12 | Rust-proof protective sleeve for foundation bolt of power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517682.8A CN109882492B (en) | 2018-12-12 | 2018-12-12 | Rust-proof protective sleeve for foundation bolt of power transmission tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882492A CN109882492A (en) | 2019-06-14 |
| CN109882492B true CN109882492B (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811517682.8A Active CN109882492B (en) | 2018-12-12 | 2018-12-12 | Rust-proof protective sleeve for foundation bolt of power transmission tower |
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| Country | Link |
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| CN (1) | CN109882492B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828456A (en) * | 2020-07-10 | 2020-10-27 | 广东电网有限责任公司 | Protective cover |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11100842A (en) * | 1997-09-29 | 1999-04-13 | Nippon Petrochem Co Ltd | Rustproof agent holder for anchor bolt and rustproof method using the same |
| JP2001295285A (en) * | 2000-04-13 | 2001-10-26 | Nippon Petrochem Co Ltd | Structure and method for rust prevention of anchor bolt |
| CN203585040U (en) * | 2013-11-18 | 2014-05-07 | 国家电网公司 | Foundation bolt protective cover |
| CN104595339A (en) * | 2015-01-30 | 2015-05-06 | 国家电网公司 | Protecting device for extra-high pressure engineering foundation bolt |
| CN205533717U (en) * | 2016-01-27 | 2016-08-31 | 天津市永兴盛标准件有限公司 | Rust -resistant reinforcing pad piece that loses of fastening bolt |
| CN207033960U (en) * | 2017-08-08 | 2018-02-23 | 国网湖北省电力公司荆门供电公司 | The special antirust sheath of foundation bolt |
| CN207975459U (en) * | 2018-01-15 | 2018-10-16 | 江阴延利汽车饰件股份有限公司 | A kind of steel linen fiber composite plates |
| CN208169301U (en) * | 2018-03-13 | 2018-11-30 | 江苏滨盛石化机械有限公司 | A kind of petroleum pipeline bolt |
| CN209781431U (en) * | 2018-12-12 | 2019-12-13 | 金华八达集团有限公司科技信息分公司 | Rust-proof protective sleeve for foundation bolt of power transmission tower |
-
2018
- 2018-12-12 CN CN201811517682.8A patent/CN109882492B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11100842A (en) * | 1997-09-29 | 1999-04-13 | Nippon Petrochem Co Ltd | Rustproof agent holder for anchor bolt and rustproof method using the same |
| JP2001295285A (en) * | 2000-04-13 | 2001-10-26 | Nippon Petrochem Co Ltd | Structure and method for rust prevention of anchor bolt |
| CN203585040U (en) * | 2013-11-18 | 2014-05-07 | 国家电网公司 | Foundation bolt protective cover |
| CN104595339A (en) * | 2015-01-30 | 2015-05-06 | 国家电网公司 | Protecting device for extra-high pressure engineering foundation bolt |
| CN205533717U (en) * | 2016-01-27 | 2016-08-31 | 天津市永兴盛标准件有限公司 | Rust -resistant reinforcing pad piece that loses of fastening bolt |
| CN207033960U (en) * | 2017-08-08 | 2018-02-23 | 国网湖北省电力公司荆门供电公司 | The special antirust sheath of foundation bolt |
| CN207975459U (en) * | 2018-01-15 | 2018-10-16 | 江阴延利汽车饰件股份有限公司 | A kind of steel linen fiber composite plates |
| CN208169301U (en) * | 2018-03-13 | 2018-11-30 | 江苏滨盛石化机械有限公司 | A kind of petroleum pipeline bolt |
| CN209781431U (en) * | 2018-12-12 | 2019-12-13 | 金华八达集团有限公司科技信息分公司 | Rust-proof protective sleeve for foundation bolt of power transmission tower |
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| Publication number | Publication date |
|---|---|
| CN109882492A (en) | 2019-06-14 |
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