CN113006821B - Interval shield segment connecting bolt fixing end protecting cover and connecting bolt - Google Patents
Interval shield segment connecting bolt fixing end protecting cover and connecting bolt Download PDFInfo
- Publication number
- CN113006821B CN113006821B CN202110433480.0A CN202110433480A CN113006821B CN 113006821 B CN113006821 B CN 113006821B CN 202110433480 A CN202110433480 A CN 202110433480A CN 113006821 B CN113006821 B CN 113006821B
- Authority
- CN
- China
- Prior art keywords
- protective cover
- gasket
- connecting bolt
- cavity
- main body
- 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.)
- Active
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 80
- 238000005452 bending Methods 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004588 polyurethane sealant Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a protective cover for a fixed end of a section shield segment connecting bolt and a connecting bolt. The protective cover includes: the protective cover comprises a protective cover body and a positioning lock catch arranged at the bottom of the protective cover body; the inside of the protective cover main body is sequentially provided with a first cavity for accommodating a first gasket and a second cavity for accommodating a fixing nut from bottom to top, the first cavity is communicated with the second cavity end to end, and the inner diameter of the first cavity is matched with the outer diameter of the first gasket; and under the condition that the protective cover is mounted on the fixed end of the connecting bolt, the positioning lock catch is clamped with the edge of the first gasket. The protection cover is tightly clamped with the fixed end of the connecting bolt, is firmer and is not easy to fall off, rust on the fixed end of the connecting bolt is effectively prevented, and driving accidents are greatly reduced.
Description
Technical Field
The invention belongs to the field of connecting bolts, and particularly relates to a protective cover for a fixed end of a section shield segment connecting bolt and the connecting bolt.
Background
The subway shield tunnel is widely adopted, and the reinforced concrete pipe piece serving as the most main part of the shield tunnel is used for bearing the soil pressure and the water pressure outside the tunnel, keeping the tunnel clearance, preventing leakage and bearing the construction load in the shield construction process. The subway shield segment consists of segments with the inner diameter phi 5500mm and the outer diameter phi 6200 m. The longitudinal duct piece width is 1.5m, and the circumferential duct piece is generally divided into the following types: standard block, module, adjacent block. The annular and longitudinal duct pieces are assembled and connected firmly by using the connecting bolts.
The number of the longitudinal connecting bolts is 1 per ring, and the number of the circumferential connecting bolts is 1 per ring. One end of the connecting bolt is a fixed end, and the other end is a movable end. The exposed connecting bolt ends are easy to rust due to damp, darkness, temperature and the like in the underground area, so that the underground area is generally sealed above the arch of the tunnel by adopting single-component polyurethane sealant, and then a high-density polyethylene or polypropylene plastic protective cover is bonded.
Due to various factors such as train vibration, construction reliability, polyurethane sealant adhesive force and the like, the protection covers near the vault and the arch waist in the tunnel often fall off, and train driving accidents are easily caused. Therefore, there is a need for innovative improvements to existing protective covers, and to design a protective cover that is more secure and less prone to falling, particularly a fixed-end protective cover.
Disclosure of Invention
The invention aims at: the utility model provides a section shield section of jurisdiction connecting bolt fixed end safety cover and connecting bolt, aims at solving the problem that easy drop that traditional safety cover appears.
The technical scheme adopted by the invention is as follows:
a section shield segment connecting bolt fixing end protecting cover. The protective cover includes: the protective cover comprises a protective cover body and a positioning lock catch arranged at the bottom of the protective cover body; the inside of the protective cover main body is sequentially provided with a first cavity for accommodating a first gasket and a second cavity for accommodating a fixing nut from bottom to top, the first cavity is communicated with the second cavity end to end, and the inner diameter of the first cavity is matched with the outer diameter of the first gasket; and under the condition that the protective cover is mounted on the fixed end of the connecting bolt, the positioning lock catch is clamped with the edge of the first gasket.
In addition, the invention also provides a section shield segment connecting bolt. The connecting bolt comprises a fixed end, wherein the fixed end is provided with a bolt hole sealing ring, a second gasket, a first gasket and a fixed nut in sequence from bottom to top, and the diameter of the second gasket is smaller than that of the first gasket; the protective cover is sleeved outside the fixed end, and the positioning lock catch is clamped with the part, protruding out of the second gasket, of the first gasket.
In the above technical scheme, the connecting bolt fixing end adopts the first gasket and the second gasket of two kinds of different sizes, first gasket is last, the second gasket is down, the safety cover main part bottom reservation all around the location hasp, during the installation forcefully promote the safety cover, when the location hasp reaches between first gasket with the second gasket, the location hasp with the edge block of first gasket, automatic locking. Meanwhile, as the inner diameter of the first cavity is matched with the outer diameter of the first gasket, the protective cover main body forms a tight radial clamping effect on the fixing end of the connecting bolt. Under the combined action of the two aspects, the protection cover is tightly buckled, so that the falling probability is greatly reduced, the connecting bolt is effectively prevented from being rusted, and the train driving accident is reduced.
Further, the positioning lock catch comprises an inner spring piece and an outer spring piece, wherein the inner spring piece and the outer spring piece are arranged on the inner side of the protective cover main body, and the inner spring piece and the outer spring piece are obliquely upwards; under the condition that the protection cover is mounted on the fixed end of the connecting bolt, an included angle formed by the inner elastic sheet and the protection cover main body is clamped with the edge of the first gasket. In the installation, promote with effort the safety cover, interior shell fragment receives the compression, paste tightly the lateral wall of first packing ring moves downwards, when the tail end of interior shell fragment exceeds the lower surface of first packing ring, interior shell fragment is spread, and then block to on the first packing ring. When the connecting bolt is required to be overhauled or the protective cover is required to be replaced, the outer elastic piece is pressed at one side, so that the inner elastic piece is slightly separated from the protective cover main body, and simultaneously, an outward force is applied to the inner elastic piece to pull out the protective cover, so that the protective cover is convenient to detach.
Further, one end of the inner elastic sheet, which is connected with the protective cover main body, is provided with a bending part, and the thickness of the bending part is thinner than that of other parts of the inner elastic sheet. The bending part enables the inner elastic sheet to have good elasticity and not to be broken easily. Optionally, the end of the outer elastic sheet connected with the protective cover main body is also provided with the bending part, and the thickness of the bending part is thinner than that of other parts of the outer elastic sheet.
In one possible embodiment, an elastic connecting piece is arranged between the inner spring piece and the protective cover main body; the elastic connecting piece enables the inner spring piece to be tightly clamped with the first gasket; optionally, an elastic connecting piece is also arranged between the outer elastic sheet and the protective cover main body. Further, the elastic connection includes, but is not limited to, a spring, elastic plastic or rubber, etc. In another possible implementation mode, the inner spring plate is provided with a concave structure close to one side of the protective cover main body, a magnet is arranged in the concave structure, so that the inner spring plate and the first gasket are further magnetically attracted together, and the protective cover is more tightly connected and is not easy to fall off under the triple actions of radial clamping, clamping and magnetic attraction.
Further, at least two locating catches are uniformly distributed.
Further, the number of the positioning catches is 4 and the positioning catches are symmetrically distributed.
Further, the inner top surface of the protective cover is also provided with an elastic gasket. In the process of installing the protection cover, the elastic gasket is compressed, so that the inner elastic sheet can move downwards, after the protection cover is clamped, the elastic gasket rebounds to fill up a tiny gap between the protection cover and the fixing nut, and the connection tightness is further increased.
Further, the inner diameter of the first cavity is larger than the inner diameter of the second cavity, so that a stepped cavity is formed inside the protective cover. Because the diameter of the first gasket is larger than that of the fixing nut, the cavity with the gradually increased inner diameter can be used for enabling each cavity to have good suitability with the first gasket and the fixing nut respectively, and the effect of stabilizing the whole structure is achieved.
Furthermore, the protective sleeve provided by the invention adopts a high-density polyethylene or polypropylene plastic protective cover, has anti-corrosion and durable performances, and can effectively protect the connecting bolt.
Further, the lower surface of the part, protruding out of the second gasket, of the first gasket is provided with a downward bending structure, so that when the protective sleeve is clamped on the first gasket, the inner elastic sheet is tightly clamped with the first gasket.
Further, the length of the inner elastic sheet is basically equal to the length of the first gasket protruding out of the second gasket, so that the tail of the inner elastic sheet is abutted to the side face of the second gasket.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
(1) The protective cover has the performance of corrosion resistance and durability, and can effectively protect the connecting bolt;
(2) The protective cover is tightly clamped with the fixing end of the connecting bolt, is more firm and is not easy to fall off, so that the rust of the fixing end of the connecting bolt is effectively prevented, and the occurrence of driving accidents is greatly reduced;
(3) The protection cover is connected with the fixing end of the connecting bolt in a clamping mode, construction is simple, convenient and reliable, and the protection cover can be disassembled without damage and recycled again.
Drawings
FIG. 1 is a schematic diagram of a shield segment connecting bolt fixed end protecting cover in a section of the present invention;
FIG. 2 is a schematic view of the installation of FIG. 1;
FIG. 3 is a schematic view of another construction of the shield segment attachment bolt fixed head protection cap of the present invention;
FIG. 4 is a schematic view of the installation of FIG. 3;
FIG. 5 is a schematic view of another construction of the shield segment attachment bolt fixed head protection cap of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a schematic view of the installation of FIG. 5;
fig. 8 is a schematic view of still another structure of the shield segment connecting bolt fixed-head protecting cover of the present invention.
Description of the reference numerals
1: a protective cover body; 2: positioning the lock catch; 21: an inner spring plate; 211: a recessed structure; 212: a magnet; 22: an outer spring plate; 23: a bending part; 24: an elastic connection member; 3: a first gasket; 4: a first cavity; 5: a fixing nut; 6: a second cavity; 7: a bolt hole sealing ring; 8: a second gasket; 9: an elastic gasket.
Detailed Description
Various exemplary embodiments, features and aspects of the invention will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, well known methods, procedures, and components have not been described in detail so as not to obscure the present invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
FIG. 1 is a schematic diagram of a shield segment connecting bolt fixed end protecting cover in a section of the present invention; FIG. 2 is a schematic view of the installation of FIG. 1; FIG. 3 is a schematic view of another construction of the shield segment attachment bolt fixed head protection cap of the present invention; FIG. 4 is a schematic view of the installation of FIG. 3; FIG. 5 is a schematic view of another construction of the shield segment attachment bolt fixed head protection cap of the present invention; FIG. 6 is an enlarged view of portion A of FIG. 5; FIG. 7 is a schematic view of the installation of FIG. 5; fig. 8 is a schematic view of still another structure of the shield segment connecting bolt fixed-head protecting cover of the present invention. As shown in fig. 1 to 8, the shield segment connecting bolt fixing end protecting cover comprises: the protective cover comprises a protective cover body 1 and a positioning lock catch 2 arranged at the bottom of the protective cover body 1; the inside of the protective cover main body 1 is sequentially provided with a first cavity 4 for accommodating a first gasket 3 and a second cavity 6 for accommodating a fixing nut 5 from bottom to top, the first cavity 4 and the second cavity 6 are communicated end to end, and the inner diameter of the first cavity 4 is matched with the outer diameter of the first gasket 3; the positioning lock catch 2 is clamped with the edge of the first washer 3 when the protective cover is mounted on the fixed end of the connecting bolt.
In addition, the invention also provides a section shield segment connecting bolt. The connecting bolt comprises a fixed end, wherein the fixed end is sequentially provided with a bolt hole sealing ring 7, a second gasket 8, a first gasket 3 and a fixed nut 5 from bottom to top, and the diameter of the second gasket 8 is smaller than that of the first gasket 3; the outer sleeve of the fixed end is provided with the protective cover, and the positioning lock catch 2 is clamped with the part of the first gasket 3 protruding out of the second gasket 8.
In the above technical scheme, the connecting bolt fixing end adopts the first packing ring 3 and the second packing ring 8 of two kinds of equidimension, and first packing ring 3 is last, and second packing ring 8 is under, and the safety cover main part 1 bottom reservation location hasp 2 all around, promotes the safety cover with force during the installation, and when location hasp 2 reached between first packing ring 3 and the second packing ring 8, the edge block of location hasp 2 and first packing ring 3 automatic locking. Meanwhile, the inner diameter of the first cavity 4 is matched with the outer diameter of the first gasket 3, so that the protective cover main body 1 forms a tight radial clamping effect on the fixing end of the connecting bolt. Under the combined action of the two aspects, the protection cover is tightly buckled, the falling probability is greatly reduced, the connecting bolt is effectively prevented from being rusted, and thus the train driving accident is reduced.
Further, the positioning lock catch 2 comprises an inner spring piece 21 and an outer spring piece 22 which are arranged on the inner side and the outer side of the protective cover main body 1, and the inner spring piece 21 and the outer spring piece 22 incline upwards; under the condition that the protective cover is mounted on the fixed end of the connecting bolt, an included angle formed by the inner elastic sheet 21 and the protective cover body 1 is clamped with the edge of the first gasket 3. In the installation process, the protective cover is forced, the inner elastic sheet 21 is compressed and moves downwards against the side wall of the first gasket 3, and when the tail end of the inner elastic sheet 21 exceeds the lower surface of the first gasket 3, the inner elastic sheet 21 is spread out and then is clamped on the first gasket 3. When the connecting bolt is required to be overhauled or the protective cover is required to be replaced, the outer elastic piece 22 is pressed at one side, so that the inner elastic piece 21 is slightly separated from the protective cover main body 1, and simultaneously, an outward force is applied to the inner elastic piece 21 to pull out the protective cover, so that the protective cover is convenient to detach.
Further, as shown in fig. 5 to 7, the end of the inner spring piece 21 connected to the protective cover body 1 is provided with a bent portion 23, and the bent portion 23 is thinner than the other portions of the inner spring piece 21. The bending part 23 enables the inner spring piece 21 to have better elasticity and not easy to break. Optionally, a bending portion 23 is also disposed at the end of the outer elastic sheet 22 connected to the protective cover body 1, and the bending portion 23 is thinner than other portions of the outer elastic sheet 22.
In one possible way, as shown in fig. 3 and 4, an elastic connection 24 is provided between the inner spring 21 and the protective cover body 1; after the positioning lock catch 2 is clamped to the edge of the first gasket 3, the inner spring piece 21 is clamped with the first gasket 3 more tightly due to the rebound effect of the elastic connecting piece 24; optionally, an elastic connection member 24 is also provided between the outer spring 22 and the protective cover body 1. Further, the resilient connection 24 includes, but is not limited to, a spring, resilient plastic or rubber, or the like.
In another possible manner, as shown in fig. 5 to 7, a concave structure 211 is disposed on one side of the inner elastic sheet 21 near the protective cover main body 1, and a magnet 212 is disposed in the concave structure 211, so that the inner elastic sheet 21 and the first gasket 3 are further magnetically attracted together, and the protective cover is more tightly connected and is less prone to falling off under the triple actions of radial clamping, clamping and magnetic attraction.
Further, at least two positioning catches 2 are uniformly distributed.
Further, the positioning catches 2 are 4 and symmetrically distributed.
Further, as shown in fig. 8, the inner top surface of the protective cover is also provided with an elastic pad 9. In the process of installing the protection cover, the elastic gasket 9 is compressed, so that the inner elastic sheet 21 can move downwards, after the protection cover is clamped, the elastic gasket 9 rebounds to fill in a tiny gap between the top of the protection cover main body 1 and the fixing nut 5, and the connection tightness is further increased.
Further, the inner diameter of the first cavity 4 is larger than the inner diameter of the second cavity 6, so that a stepped cavity is formed inside the protective cover. Because the diameter of the first gasket 3 is larger than that of the fixing nut 5, the cavities with gradually increased inner diameters can be respectively provided with good suitability with the first gasket 3 and the fixing nut 5, and the effect of stabilizing the whole structure is achieved.
Furthermore, the protective sleeve provided by the invention adopts a high-density polyethylene or polypropylene plastic protective cover, has anti-corrosion and durable performances, and can effectively protect the connecting bolt.
Further, the lower surface of the part of the first gasket 3 protruding out of the second gasket 8 is provided with a downward bending structure, so that when the protective sleeve is clamped on the first gasket 3, the inner elastic sheet 21 is tightly clamped with the first gasket 3.
Further, the length of the inner spring piece 21 is substantially equal to the length of the first washer 3 protruding out of the second washer 8, so that the tail of the inner spring piece 21 abuts against the side of the second washer 8.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (4)
1. The section shield segment connecting bolt fixing end protecting cover is characterized by comprising a fixing end, wherein the fixing end is sequentially provided with a bolt hole sealing ring, a second gasket, a first gasket and a fixing nut from bottom to top, and the diameter of the second gasket is smaller than that of the first gasket; the fixed end is sleeved with a protective cover;
the protective cover includes: the protective cover comprises a protective cover body and a positioning lock catch arranged at the bottom of the protective cover body; the inside of the protective cover main body is sequentially provided with a first cavity for accommodating a first gasket and a second cavity for accommodating a fixing nut from bottom to top, the first cavity is communicated with the second cavity end to end, and the inner diameter of the first cavity is matched with the outer diameter of the first gasket; the positioning lock catch is clamped with the edge of the first gasket under the condition that the protective cover is mounted on the fixed end of the connecting bolt;
the positioning lock catch is clamped with the part, protruding out of the second gasket, of the first gasket;
the positioning lock catch comprises an inner spring piece and an outer spring piece, wherein the inner spring piece and the outer spring piece are arranged on the inner side of the protective cover main body, and the inner spring piece and the outer spring piece are obliquely upwards; under the condition that the protective cover is mounted on the fixed end of the connecting bolt, an included angle formed by the inner elastic sheet and the protective cover main body is clamped with the edge of the first gasket;
an elastic connecting piece is arranged between the inner elastic piece and the protective cover main body; an elastic connecting piece is also arranged between the outer elastic piece and the protective cover main body; the elastic connecting piece comprises a spring, elastic plastic or rubber;
a concave structure is arranged on one side of the inner elastic sheet, which is close to the protective cover main body, and a magnet is arranged in the concave structure;
the end, connected with the protective cover main body, of the inner elastic piece is provided with a bending part, and the thickness of the bending part is thinner than that of other parts of the inner elastic piece; the bending part is also arranged at one end of the outer elastic sheet, which is connected with the protective cover main body, and the thickness of the bending part is thinner than that of other parts of the outer elastic sheet;
the number of the positioning lock catches is at least two and the positioning lock catches are uniformly distributed.
2. The shield segment connecting bolt fixing end protecting cover according to claim 1, wherein an elastic gasket is further arranged on the inner top surface of the protecting cover.
3. The shield segment connecting bolt fixing end protecting cover according to claim 1, wherein the inner diameter of the first cavity is larger than the inner diameter of the second cavity, so that a stepped cavity is formed inside the protecting cover.
4. The shield segment attachment bolt securement tip protector of claim 1, wherein a portion of the lower surface of said first washer projecting beyond said second washer is configured in a downward bent configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433480.0A CN113006821B (en) | 2021-04-21 | 2021-04-21 | Interval shield segment connecting bolt fixing end protecting cover and connecting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433480.0A CN113006821B (en) | 2021-04-21 | 2021-04-21 | Interval shield segment connecting bolt fixing end protecting cover and connecting bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113006821A CN113006821A (en) | 2021-06-22 |
| CN113006821B true CN113006821B (en) | 2023-11-21 |
Family
ID=76388965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110433480.0A Active CN113006821B (en) | 2021-04-21 | 2021-04-21 | Interval shield segment connecting bolt fixing end protecting cover and connecting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113006821B (en) |
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|---|---|---|---|---|
| JPH11303844A (en) * | 1998-04-20 | 1999-11-02 | Yamaka Electric Construction Co Ltd | Bolt loosening preventing tool |
| JP2010133447A (en) * | 2008-12-02 | 2010-06-17 | Nichiei Intec Co Ltd | Piping band capable of temporarily fixing and holding nut at fastening portion |
| CN202441696U (en) * | 2012-01-16 | 2012-09-19 | 祖丕龙 | Anti-rust cover |
| CN203331049U (en) * | 2013-06-24 | 2013-12-11 | 张家港金丰纺织有限公司 | Sewing scissors |
| CN204572734U (en) * | 2015-04-29 | 2015-08-19 | 温州科技职业学院 | Bolt and nut Rustproof cover |
| CN204805280U (en) * | 2015-05-25 | 2015-11-25 | 温州科技职业学院 | A locking rust -resistant sealed cowling for bolt and nut |
| CN105156450A (en) * | 2015-10-21 | 2015-12-16 | 李一达 | Anti-theft and anti-demounting retainer of anti-theft and anti-demounting nut |
| CN205937424U (en) * | 2016-08-22 | 2017-02-08 | 国网河南省电力公司南阳供电公司 | Bolt protection device |
| CN207647946U (en) * | 2017-08-07 | 2018-07-24 | 新昌县精特网络科技有限公司 | A kind of nut for protecting bolt to prevent bolt falling |
| CN208502800U (en) * | 2018-07-18 | 2019-02-15 | 中铁十一局集团城市轨道工程有限公司 | Preventing water leakage tunnel duct piece hand hole blocking structure |
| CN210118338U (en) * | 2019-05-28 | 2020-02-28 | 福州东凡机电科技有限公司 | Screw thread safety cover that shock resistance is strong |
-
2021
- 2021-04-21 CN CN202110433480.0A patent/CN113006821B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11303844A (en) * | 1998-04-20 | 1999-11-02 | Yamaka Electric Construction Co Ltd | Bolt loosening preventing tool |
| JP2010133447A (en) * | 2008-12-02 | 2010-06-17 | Nichiei Intec Co Ltd | Piping band capable of temporarily fixing and holding nut at fastening portion |
| CN202441696U (en) * | 2012-01-16 | 2012-09-19 | 祖丕龙 | Anti-rust cover |
| CN203331049U (en) * | 2013-06-24 | 2013-12-11 | 张家港金丰纺织有限公司 | Sewing scissors |
| CN204572734U (en) * | 2015-04-29 | 2015-08-19 | 温州科技职业学院 | Bolt and nut Rustproof cover |
| CN204805280U (en) * | 2015-05-25 | 2015-11-25 | 温州科技职业学院 | A locking rust -resistant sealed cowling for bolt and nut |
| CN105156450A (en) * | 2015-10-21 | 2015-12-16 | 李一达 | Anti-theft and anti-demounting retainer of anti-theft and anti-demounting nut |
| CN205937424U (en) * | 2016-08-22 | 2017-02-08 | 国网河南省电力公司南阳供电公司 | Bolt protection device |
| CN207647946U (en) * | 2017-08-07 | 2018-07-24 | 新昌县精特网络科技有限公司 | A kind of nut for protecting bolt to prevent bolt falling |
| CN208502800U (en) * | 2018-07-18 | 2019-02-15 | 中铁十一局集团城市轨道工程有限公司 | Preventing water leakage tunnel duct piece hand hole blocking structure |
| CN210118338U (en) * | 2019-05-28 | 2020-02-28 | 福州东凡机电科技有限公司 | Screw thread safety cover that shock resistance is strong |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113006821A (en) | 2021-06-22 |
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