CN114439840A - Combined anti-drop bolt protective cover and installation method thereof - Google Patents
Combined anti-drop bolt protective cover and installation method thereof Download PDFInfo
- Publication number
- CN114439840A CN114439840A CN202210188807.7A CN202210188807A CN114439840A CN 114439840 A CN114439840 A CN 114439840A CN 202210188807 A CN202210188807 A CN 202210188807A CN 114439840 A CN114439840 A CN 114439840A
- Authority
- CN
- China
- Prior art keywords
- bolt
- filler
- nut
- cover
- washer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 19
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 14
- 230000002265 prevention Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000004588 polyurethane sealant Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011900 installation process Methods 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
- 230000008092 positive effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/002—Measures against loss of bolts, nuts or pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
Abstract
The invention discloses a combined anti-falling bolt protective cover and an installation method thereof. By adopting the structure, on one hand, the bolt protective cover is firmly bonded with the bolt, the nut and the washer through the filler and is also in threaded connection with the washer, so that the bolt protective cover is prevented from falling off under the repeated action of vibration load; on the other hand, the filler in the bolt protective cover can isolate air, water and other harmful substances by utilizing the characteristics of the filler such as but not limited to cohesiveness and compactness, so that the anticorrosion effect of the bolt, the nut and the washer is further enhanced.
Description
Technical Field
The invention belongs to the technical field of bolt protection, and particularly relates to a combined anti-falling bolt protection cover and an installation method thereof.
Background
The bolt connection technology is widely applied to the fields of equipment fixed connection, steel structure connection, shield tunnel segment structure connection and the like, and generally combines and uses components such as bolts, washers, nuts and the like. In order to prevent corrosion and damage caused by corrosion of bolts, nuts, washers, and the like exposed to the environment, bolt protective covers are generally used for protection. On one hand, the bolt protective cover cannot effectively isolate air, water and other harmful substances, and has poor anti-corrosion protection effect on the bolt, the nut and the washer; and the other cover is easy to loosen and fall off under the repeated action of vibration load, and the fallen bolt protective cover possibly collides with operation equipment and running rapid vehicles to cause accidents, so that the safety is poor. Therefore, a bolt protection structure with good corrosion protection effect and good loosening and dropping prevention performance is needed, and a combined type dropping-prevention bolt protection cover needs to be designed to solve the problems.
Disclosure of Invention
The invention aims to provide a combined anti-falling bolt protective cover and an installation method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a modular anti-drop bolt safety cover, includes bolt safety cover and packing ring, be provided with the internal thread on the bolt safety cover run through on the bolt safety cover lateral wall and be provided with the overflow hole, just still be provided with the filler in the bolt safety cover, be provided with the external screw thread on the packing ring, just internal thread on the bolt safety cover with external screw thread phase-match on the packing ring.
Preferably, the gasket is a torus, and the external thread is arranged on the outer wall of the gasket.
Preferably, the internal thread is provided on an inner wall of the bolt guard.
Preferably, the outer diameter of the washer is the same as the inner diameter of the bolt protection cage.
The utility model provides a modular integrated configuration of anti-drop bolt safety cover, includes bolt safety cover, packing ring, bolt, nut and filler, the packing ring with the nut is all the suit at on the bolt, the nut with the bolt passes through screw-thread fit and connects, the nut is being installed can be with behind the bolt the packing ring is fixed between nut and the component, be provided with the external screw thread on the packing ring, be provided with the internal thread on the bolt safety cover, just internal thread on the bolt safety cover with external screw thread phase-match on the packing ring, the filler sets up the bolt safety cover with the bolt the nut with in the space between the packing ring.
Preferably, the filler has adhesive and sealing properties.
A method for installing a combined anti-falling bolt protective cover is characterized by comprising the following steps:
the first step is as follows: rust inspection and removal, namely, the rust on the bolt, the nut and the washer is inspected and cleaned;
the second step is that: drying and cleaning the base surface, namely cleaning and drying the base surfaces of the bolt, the nut, the washer and the component;
the third step: performing rust prevention treatment, namely performing rust prevention spraying treatment on the easily rusted parts of the bolt, the nut and the washer;
the fourth step: filling, namely filling filler into the bolt protective cover;
the fifth step: mounting, connecting the bolt protective cover with the gasket to ensure that the bolt protective cover is attached to the base surface of the component, and simultaneously extruding the filler to leak out of the bolt protective cover through the overflow hole;
and a sixth step: and (4) cleaning the filler which leaks out of the bolt protective cover and is solidified.
Preferably, in the second step, the cotton yarn is washed and wiped by high pressure water to keep clean, and baked by using a torch to keep dry.
Preferably, the filler is a one-component polyurethane sealant.
Preferably, the fourth step is performed such that the volume occupied by the filler when the filler is filled into the bolt protector is at least 2/3 times the volume occupied by the bolt protector.
The invention has the advantages and positive effects that:
the invention provides a combined anti-falling bolt protection cover which is formed by combining a bolt protection cover, filler in the bolt protection cover and a gasket, wherein the filler has the characteristics of but not limited to cohesiveness and compactness, and the bolt protection cover is in threaded connection with the gasket. By adopting the structure, on one hand, the bolt protective cover is firmly bonded with the bolt, the nut and the washer through the filler and is also in threaded connection with the washer, so that the bolt protective cover is prevented from falling off under the repeated action of vibration load; on the other hand, the filler in the bolt protective cover isolates air, water and other harmful substances, and the anti-corrosion effect of the bolt, the nut and the washer is further enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a sectional view of the combined type falling off preventive bolt protecting cover according to the present invention after being installed;
FIG. 2 is a schematic view of a node A of the combined anti-falling bolt protective cover provided by the invention;
FIG. 3 is a plan view of a gasket provided by the present invention;
FIG. 4 is a cross-sectional view B-B of the gasket provided by the present invention;
fig. 5 is a flow chart of the installation of the combined type falling-off preventing bolt guard.
The reference numerals are explained below:
1. a bolt protecting cover; 2. a filler; 3. a bolt; 4. a nut; 5. a gasket; 6. a member; 7. an overflow aperture; 8. an internal thread; 9. and (4) external threads.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
The invention will be further described with reference to the accompanying drawings in which:
example 1
As shown in fig. 1-5, a combined anti-drop bolt protection cover 1 comprises a bolt protection cover 1 and a gasket 5, wherein an internal thread 8 is arranged on the bolt protection cover 1, an overflow hole 7 is arranged on the side wall of the bolt protection cover 1 in a penetrating manner, a filler 2 is further arranged in the bolt protection cover 1, an external thread 9 is arranged on the gasket 5, and the internal thread 8 on the bolt protection cover 1 is matched with the external thread 9 on the gasket 5.
The filler 2 in the bolt protection cover 1 has the characteristics of adhesion and compactness, and when the bolt protection cover is used, the filler 2 is completely filled in gaps among the bolt protection cover 1, the bolt 3, the nut 4 and the gasket 5 through the extrusion of the bolt protection cover 1, so that the bonding is firmer, air, water and other harmful substances can be isolated, and the corrosion prevention effect of the bolt 3, the nut 4 and the gasket 5 is further enhanced.
The 1 annular equiangular of bolt safety cover is equipped with 4 circular shape overflow hole 7, and bolt safety cover 1 can make on the inner wall internal thread 8 and the external screw thread 9 on the 5 outer walls of packing ring mutually support fixedly through the rotation, further strengthens bolt safety cover 1's anti-drop performance.
The utility model provides a modular integrated configuration of anti-drop bolt safety cover, including bolt safety cover 1, packing ring 5, bolt 3, nut 4 and filler 2, packing ring 5 and the equal suit of nut 4 are on bolt 3, nut 4 passes through screw-thread fit with bolt 3 and is connected, nut 4 can fix packing ring 5 between nut 4 and component 6 after installing bolt 3, be provided with external screw thread 9 on the packing ring 5, be provided with internal thread 8 on the bolt safety cover 1, and the internal thread 8 on the bolt safety cover 1 and the external screw thread 9 phase-match on the packing ring 5, filler 2 sets up in bolt safety cover 1 and bolt 3, in the space between nut 4 and the packing ring 5.
A method for installing a combined anti-falling bolt protective cover is characterized by comprising the following steps:
the first step is as follows: rust inspection and removal, wherein the rust on the bolt 3, the nut 4 and the washer 5 is inspected and removed;
the second step is that: base surfaces are dried and cleaned, and the base surfaces of the bolt 3, the nut 4, the washer 5 and the component 6 are cleaned and dried;
the third step: performing rust prevention treatment, namely performing rust prevention spraying treatment on the easily rusted parts of the bolt 3, the nut 4 and the washer 5;
the fourth step: filling, namely filling filler 2 into the bolt protective cover 1;
the fifth step: mounting, namely connecting the bolt protection cover 1 with a gasket 5, attaching the bolt protection cover 1 to the base surface of the component 6, and simultaneously extruding the filler 2 to leak out of the bolt protection cover 1 through an overflow hole 7;
and a sixth step: and (4) cleaning the filler 2 which leaks out of the bolt protective cover 1 and is solidified.
In the second step, the cotton yarn is washed and wiped by high-pressure water to keep clean, and baked by using a torch to keep dry.
The component of the filler 2 is a single-component polyurethane sealant.
In the fourth step, the volume occupied by the filler 2 is at least 2/3 of the bolt protection cover 1 when the filler 2 is filled into the bolt protection cover 1.
The installation process of this embodiment is as follows: firstly, rust on a bolt 3, a nut 4 and a gasket 5 is checked, rusted parts are polished and derusted by a steel wire brush until the rust is completely cleaned, then base planes of the bolt 3, the nut 4, the gasket 5 and a component 6 are wiped and washed by cotton yarn and high-pressure water to keep clean, after washing is finished, base planes of the bolt 3, the nut 4, the gasket 5 and the component 6 are dried by a flame thrower to keep dry, the gasket 5 is sleeved on the outer side of the bolt 3 fixed on a structure, the nut 4 is screwed on the bolt 3, the gasket 5 is firmly fixed between the component 6 and the nut 4, then the surfaces of the bolt 3, the nut 4 and the gasket 5 are subjected to rust-proof spraying treatment, then workers fill 2/3 filler 2 into the bolt protective cover 1, the component of the filler 2 is single-component polyurethane sealant, the bolt protective cover 1 is buckled on the nut 4 after the filler 2 in the bolt protective cover 1 is filled, meanwhile, pressure is applied to the bolt protection cover 1, the filler 2 flows in the bolt protection cover 1 after being subjected to the pressure transmitted by the bolt protection cover 1, at the moment, a part of the filler 2 can fully enter gaps among the bolt protection cover 1, the bolt 3, the nut 4 and the gasket 5 are isolated from being contacted with air, water and other harmful substances, the anti-corrosion effect is enhanced, then, the pressure is continuously applied to the bolt protection cover 1, the bolt protection cover 1 is contacted with the gasket 5, then, the bolt protection cover 1 is rotated, the bolt protection cover 1 is connected with the gasket 5 through the internal thread 8 and the external thread 9, the anti-falling performance of the bolt protection cover 1 is further enhanced, and meanwhile, because the space in the bolt protection cover 1 is limited, the other part of the filler 2 flows out from an overflow hole on the bolt protection cover 1 after being extruded, so can prevent to cause the installation difficulty of bolt safety cover 1 because of filler 2 is too much, the staff clears up the filler 2 that flows from the overflow hole at last, accomplishes the installation to bolt safety cover 1.
The above description is intended to illustrate an embodiment of the present invention, but the present invention is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a modular anti-drop bolt safety cover which characterized in that: including bolt safety cover (1) and packing ring (5), be provided with internal thread (8) on bolt safety cover (1) run through on bolt safety cover (1) lateral wall and be provided with overflow hole (7), just still be provided with filler (2) in bolt safety cover (1), be provided with external screw thread (9) on packing ring (5), just internal thread (8) on bolt safety cover (1) with external screw thread (9) phase-match on packing ring (5).
2. The combined type falling-off prevention bolt protection cover according to claim 1, characterized in that: the gasket (5) is a ring body, and the external threads (9) are arranged on the outer wall of the gasket (5).
3. The combined type falling-off prevention bolt protection cover according to claim 1, characterized in that: the internal thread (8) is arranged on the inner wall of the bolt protection cover (1).
4. The combined type falling-off prevention bolt protection cover according to claim 1, characterized in that: the outer diameter of the washer (5) is the same as the inner diameter of the bolt protection cover (1).
5. The utility model provides a composite structure of modular anti-drop bolt safety cover which characterized in that: comprises a bolt protective cover (1), a washer (5), a bolt (3), a nut (4) and a filler (2), the washer (5) and the nut (4) are sleeved on the bolt (3), the nut (4) is connected with the bolt (3) in a thread fit manner, the washer (5) can be fixed between the nut (4) and a component (6) by the nut (4) after the nut (4) is installed on the bolt (3), the washer (5) is provided with an external thread (9), the bolt protective cover (1) is provided with an internal thread (8), and the internal thread (8) on the bolt protective cover (1) is matched with the external thread (9) on the gasket (5), the filler (2) is arranged in the gap between the bolt protective cover (1) and the bolt (3), the nut (4) and the washer (5).
6. The combined structure of a combined anti-drop bolt protective cover according to claim 5, characterized in that: the filler (2) has adhesive properties and sealing properties.
7. A method for installing a combined anti-falling bolt protective cover is characterized by comprising the following steps:
the first step is as follows: rust is checked and removed, and the rust on the bolt (3), the nut (4) and the washer (5) is checked and removed;
the second step: the base surface is dried, and the base surfaces of the bolt (3), the nut (4), the washer (5) and the component (6) are cleaned and dried;
the third step: performing rust prevention treatment, namely performing rust prevention spraying treatment on the easily rusted parts of the bolt (3), the nut (4) and the washer (5);
the fourth step: filling, namely filling a filler (2) into the bolt protective cover (1);
the fifth step: mounting, namely connecting the bolt protection cover (1) with a gasket (5), so that the bolt protection cover (1) is attached to the base surface of the component (6), and simultaneously, the filler (2) is extruded to leak out of the bolt protection cover (1) through an overflow hole (7);
and a sixth step: and (4) cleaning the filler (2) which leaks out of the bolt protective cover (1) and is solidified.
8. The method for installing a combined type drop-preventing bolt protector according to claim 7, wherein: in the second step, the cotton yarn is washed and wiped by high-pressure water to keep clean, and baked by using a torch to keep dry.
9. The method for installing a combined type drop-preventing bolt protector according to claim 7, wherein: the filler (2) is a single-component polyurethane sealant.
10. The method for installing a combined type drop-preventing bolt protector according to claim 7, wherein: in the fourth step, when the bolt protection cover (1) is filled with the filler (2), the volume occupied by the filler (2) is at least 2/3 of the bolt protection cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210188807.7A CN114439840A (en) | 2022-02-28 | 2022-02-28 | Combined anti-drop bolt protective cover and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210188807.7A CN114439840A (en) | 2022-02-28 | 2022-02-28 | Combined anti-drop bolt protective cover and installation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114439840A true CN114439840A (en) | 2022-05-06 |
Family
ID=81372697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210188807.7A Pending CN114439840A (en) | 2022-02-28 | 2022-02-28 | Combined anti-drop bolt protective cover and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114439840A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02138488A (en) * | 1988-11-18 | 1990-05-28 | Dainippon Toryo Co Ltd | Corrosion preventive method for bolt and nut |
| US20140130957A1 (en) * | 2012-11-12 | 2014-05-15 | Lisi Aerospace | Leak-proof fastening device |
| CN108895246A (en) * | 2018-08-31 | 2018-11-27 | 绵阳飞远科技有限公司 | The corrosion protection equipment of buried long gas pipeline |
| CN208565203U (en) * | 2018-07-02 | 2019-03-01 | 保定华铁电气化供电器材设备有限公司 | A kind of bolt anti-corrosion device |
| JP2019194491A (en) * | 2018-05-01 | 2019-11-07 | 東京電設サービス株式会社 | Bolt cap and corrosion-prevention method of bolt |
| CN210630986U (en) * | 2019-10-15 | 2020-05-29 | 苏州发特金属制品有限公司 | Edge folding device for screen embedded ornament |
| CN210686615U (en) * | 2019-08-27 | 2020-06-05 | 中铁第四勘察设计院集团有限公司 | Section of jurisdiction anti-drop hand hole block structure |
| KR20200119679A (en) * | 2019-04-10 | 2020-10-20 | 이효석 | Protect cap asembly for anti corrosion |
| CN214661431U (en) * | 2021-04-26 | 2021-11-09 | 晋江市曙光机械有限公司 | Anti-drop's bolt for car |
| CN217177120U (en) * | 2022-02-28 | 2022-08-12 | 中国铁路设计集团有限公司 | Modular anti-drop bolt safety cover and integrated configuration |
-
2022
- 2022-02-28 CN CN202210188807.7A patent/CN114439840A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02138488A (en) * | 1988-11-18 | 1990-05-28 | Dainippon Toryo Co Ltd | Corrosion preventive method for bolt and nut |
| US20140130957A1 (en) * | 2012-11-12 | 2014-05-15 | Lisi Aerospace | Leak-proof fastening device |
| JP2019194491A (en) * | 2018-05-01 | 2019-11-07 | 東京電設サービス株式会社 | Bolt cap and corrosion-prevention method of bolt |
| CN208565203U (en) * | 2018-07-02 | 2019-03-01 | 保定华铁电气化供电器材设备有限公司 | A kind of bolt anti-corrosion device |
| CN108895246A (en) * | 2018-08-31 | 2018-11-27 | 绵阳飞远科技有限公司 | The corrosion protection equipment of buried long gas pipeline |
| KR20200119679A (en) * | 2019-04-10 | 2020-10-20 | 이효석 | Protect cap asembly for anti corrosion |
| CN210686615U (en) * | 2019-08-27 | 2020-06-05 | 中铁第四勘察设计院集团有限公司 | Section of jurisdiction anti-drop hand hole block structure |
| CN210630986U (en) * | 2019-10-15 | 2020-05-29 | 苏州发特金属制品有限公司 | Edge folding device for screen embedded ornament |
| CN214661431U (en) * | 2021-04-26 | 2021-11-09 | 晋江市曙光机械有限公司 | Anti-drop's bolt for car |
| CN217177120U (en) * | 2022-02-28 | 2022-08-12 | 中国铁路设计集团有限公司 | Modular anti-drop bolt safety cover and integrated configuration |
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