CN221074927U - Corrosion-resistant fastening bolt - Google Patents
Corrosion-resistant fastening bolt Download PDFInfo
- Publication number
- CN221074927U CN221074927U CN202323226569.3U CN202323226569U CN221074927U CN 221074927 U CN221074927 U CN 221074927U CN 202323226569 U CN202323226569 U CN 202323226569U CN 221074927 U CN221074927 U CN 221074927U
- Authority
- CN
- China
- Prior art keywords
- cover
- bolt head
- corrosion
- fastening bolt
- sealing ring
- 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.)
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- 238000005260 corrosion Methods 0.000 title claims abstract description 27
- 230000007797 corrosion Effects 0.000 title abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- JQOAZIZLIIOXEW-UHFFFAOYSA-N zinc;chromium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Cr+3].[Cr+3].[Zn+2] JQOAZIZLIIOXEW-UHFFFAOYSA-N 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- DQIPXGFHRRCVHY-UHFFFAOYSA-N chromium zinc Chemical compound [Cr].[Zn] DQIPXGFHRRCVHY-UHFFFAOYSA-N 0.000 abstract description 2
- 101100234547 Caenorhabditis elegans rod-1 gene Proteins 0.000 description 6
- 208000035193 Ring chromosome 10 syndrome Diseases 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 208000033641 Ring chromosome 5 syndrome Diseases 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000005254 chromizing Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000035480 Ring chromosome 8 syndrome Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model relates to the related field of fastening bolts, in particular to an anti-corrosion fastening bolt which comprises a screw rod, a bolt head, a protective cover, an expansion cover, a movable ring, a spring, a pressing cylinder, a first sealing ring, a protective layer, a thread groove, an anti-skid stripe and the like. According to the utility model, the protective cover and the protective layer are arranged, the elastic force is applied to the pressing cylinder through the arranged spring, the pressing cylinder drives the second sealing ring to be firmly attached to the workpiece, so that the tightness of the inside of the protective cover and the inside of the expansion cover are improved, corrosion of external corrosive gas and liquid to the bolt head is reduced, the corrosion resistance of the bolt head is further improved by the chromium zinc protective layer, the protection effect on the screw head is better, the corrosion of the external corrosive gas and liquid to the screw rod caused by entering the screw hole of the workpiece is reduced by the arrangement of the first sealing ring, the corrosion-resistant protection of the whole fastening bolt is more comprehensively realized, and the long-term stable use of the fastening bolt is more facilitated.
Description
Technical Field
The utility model relates to the field of fastening bolts, in particular to an anti-corrosion fastening bolt.
Background
Fastening bolts are a common type of connection tool that is commonly used to secure two or more objects together. It is typically composed of bolts, nuts and washers. The bolt and nut are used to connect the objects together, while the washer is used to reduce friction between the bolt and nut.
The prior patent: CN203051382U discloses an anti-corrosion bolt, adopts and sets up the helmet on the bolt head, and sets up the design of flange at the helmet edge, has prevented effectively that corrosive gas or liquid and bolt contact and lead to the fact the corruption to the bolt to influence, has promoted the anticorrosive performance of bolt, has prolonged life, has guaranteed the safe operation of equipment.
This current patent provides the protection for the bolt head through the helmet and prevents that the bolt head from being corroded, and the bolt mounting point probably forms the clearance because the surface is not enough level and smooth or because the bolt is not hard up between and the helmet to reduce the protection effect to the bolt head, and, only the protection effect to the bolt head through the helmet is relatively poor, still appears the bolt by the condition of corruption easily, especially in some moist, the bolt that uses in the corrosive gas environment, the corrosion resistance is poor is unfavorable for its long-term stable use.
Disclosure of Invention
Accordingly, in order to solve the above-mentioned drawbacks, the present utility model provides an anti-corrosion fastening bolt to solve the above-mentioned technical problems.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the anti-corrosion fastening bolt comprises a screw rod and a bolt head arranged at the upper end part of the screw rod, wherein a protective cover is movably sleeved outside the bolt head, a first sealing ring is detachably arranged at the bottom of the outer side of the bolt head, an expansion cover is arranged at the bottom of the protective cover, and the protective cover is connected with the bolt head through a connecting piece;
the top of the inner side of the expansion cover is movably embedded with a movable ring, the movable ring is connected with a pressing cylinder through a spring, the pressing cylinder is movably arranged at the bottom of the inner side of the expansion cover, and the bottom of the pressing cylinder is fixedly provided with a second sealing ring;
The protective layer comprises a zinc chromite protective layer coated on the outer surface of the bolt head and a connecting groove formed in the outer side end surface of the bolt head, wherein an acrylic protective layer is coated on the outer surface of the zinc chromite protective layer, and the inside of the connecting groove is filled and covered by the zinc chromite protective layer.
Preferably, the connecting piece is a threaded column integrally formed with the top of the inner side of the protective cover, and a threaded groove matched with the threaded column is formed in the middle of the top end face of the bolt head.
Preferably, a plurality of anti-slip stripes are equidistantly arranged on the outer wall of the protective cover along the circumferential direction.
Preferably, the protective cover and the expansion cover are enclosed to form a cover body structure with a sealed top and an open bottom, and the joint of the protective cover and the expansion cover is in a step shape.
Preferably, the bottom end surface of the pressure cylinder is lower than the bottom end surface of the expansion cover, the bottom of the outer side of the pressure cylinder is provided with an annular convex eave along the circumferential direction, and the bottom of the convex eave is completely covered by the second sealing ring.
Preferably, a second sealing ring is adhered to the inner side wall of the expansion cover, and an inner ring of the second sealing ring in the expansion cover is adhered to the side surface of the pressing cylinder.
Preferably, the top of the outer side of the bolt head is a regular hexagon cylinder.
The utility model has the beneficial effects that:
According to the utility model, the protective cover and the protective layer are arranged, the elastic force is applied to the pressing cylinder through the arranged spring, the pressing cylinder drives the second sealing ring to be firmly attached to the workpiece, so that the tightness of the inside of the protective cover and the inside of the expansion cover are improved, corrosion of external corrosive gas and liquid to the bolt head is reduced, the corrosion resistance of the bolt head is further improved by the chromium zinc protective layer, the protection effect on the screw head is better, the corrosion of the external corrosive gas and liquid to the screw rod caused by entering the screw hole of the workpiece is reduced by the arrangement of the first sealing ring, the corrosion-resistant protection of the whole fastening bolt is more comprehensively realized, and the long-term stable use of the fastening bolt is more facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic top view of the bolt head of the present utility model;
Fig. 3 is an enlarged schematic view of the structure of fig. 1a according to the present utility model.
Wherein: screw rod-1, bolt head-2, safety cover-3, expansion cover-4, movable ring-5, spring-6, pressure cylinder-7, first sealing ring-8, protection layer-9, second sealing ring-10, screw thread column-11, screw thread groove-12, anti-slip stripe-13, protruding eave-14, zinc chromite protection layer-91, connecting groove-92, acrylic acid protection layer-93.
Detailed Description
In order to further explain the technical scheme of the utility model, the following is explained in detail through specific examples.
As shown in fig. 1, the utility model provides an anti-corrosion fastening bolt, which comprises a screw 1 and a bolt head 2 arranged at the upper end part of the screw 1;
In the embodiment, the top of the outer side of the bolt head 2 is a regular hexagon cylinder, so that the bolt head 2 can be conveniently rotated by using a hexagon wrench;
When the screw rod 1 is used, the screw rod 1 is inserted into the threaded hole of the workpiece, the threaded hole is pre-provided with the annular groove corresponding to the first sealing ring 8, the external hexagonal wrench is used for rotating the bolt head 2 to drive the bolt 1 to rotate so as to connect the workpiece with equipment, the first sealing ring 8 copper plate enters into the corresponding groove after the screw rod 1 completely enters into the threaded hole on the workpiece, the connecting position of the screw rod 1 and the workpiece is sealed, and corrosion of external corrosive gas and liquid to the screw rod 1 is prevented.
As shown in fig. 1 and 2, in this embodiment, a protective cover 3 is movably sleeved outside a bolt head 2, the bottom of the outer side of the bolt head 2 is adhered to an inner ring of a first sealing ring 8 in parallel, an expansion cover 4 is arranged at the bottom of the protective cover 3 in an integrated structure, and the protective cover 3 is connected with the bolt head 2 through a connecting piece;
The movable ring 5 is movably embedded in the top of the inner side of the expansion cover 4, the movable ring 5 can horizontally rotate at the top of the inner side of the expansion cover 4, the movable ring 5 is connected with the pressing cylinder 7 through the spring 6, the pressing cylinder 7 is movably arranged at the bottom of the inner side of the expansion cover 4, the pressing cylinder 7 can horizontally rotate and vertically move along the inner wall of the expansion cover 4, the bottom of the pressing cylinder 7 is fixedly provided with the second sealing ring 10, and the tightness of the connection of the pressing cylinder 7 with a workpiece is improved;
The connecting piece is a threaded column 11 integrally formed with the top of the inner side of the protective cover 3, a threaded groove 12 matched with the threaded column 11 is formed in the middle of the top end surface of the bolt head 2, and the position of the protective cover 3 is fixed by the threaded column 11 matched with the threaded groove 12;
In the embodiment, the outer wall of the protective cover 3 is provided with a plurality of anti-slip stripes 13 at equal intervals along the circumferential direction, so that the protective cover 3 can be rotated more conveniently, and the protective cover 3 is convenient to mount and dismount;
The protective cover 3 and the expansion cover 4 are enclosed to form a cover body structure with a sealed top and an open bottom, and the joint of the protective cover 3 and the expansion cover 4 is in a step shape, so that the protective cover 3 is matched with the expansion cover 4 to cover the outside of the bolt head 2, and corrosion protection is provided for the bolt head 2;
The bottom end surface of the pressing cylinder 7 is lower than the bottom end surface of the expansion cover 4, an annular convex edge 14 is arranged at the bottom of the outer side of the pressing cylinder 7 along the circumferential direction, the bottom of the convex edge 14 is completely covered by the second sealing ring 10, so that the pressing cylinder 7 can be in stable contact with a workpiece, the contact area between the pressing cylinder 7 and the workpiece is increased by the arranged second sealing ring 10, the sealing performance in the protective cover 3 is improved, and the corrosion of external corrosive gas and liquid to a fastening bolt is prevented;
In the embodiment, the second sealing ring 10 is adhered to the inner side wall of the expansion cover 4, and the inner ring of the second sealing ring 10 in the expansion cover 4 is adhered to the side surface of the pressing cylinder 7, so that the tightness of the pressing cylinder 7 contacting the expansion cover 4 is improved;
During the use, insert screw thread post 11 in screw thread groove 12, and rotate the safety cover 3 and drive screw thread post 11 rotation and be fixed in screw thread groove 12, screw thread post 11 drives safety cover 3 when the installation, expand cover 4 and pressure section of thick bamboo 7 inwards remove, pressure section of thick bamboo 7 drives the second sealing washer 10 of its bottom inwards move and contact the work piece surface, when pressure section of thick bamboo 7 continuously inwards remove extrusion spring 6 carry out elastic compression, until unable rotation safety cover 3, the second sealing washer 10 of pressure section of thick bamboo 7 bottom receives spring 6's elasticity and tightly laminate at the work piece surface this moment, improve the leakproofness of the airtight space that safety cover 3, expand cover 4, pressure section of thick bamboo 7 and work piece enclose and form, reduce outside corrosive gas, liquid entering and lead to the fact the corruption to fastening bolt, improve fastening bolt's life and stability in use.
As shown in fig. 3, the protection layer 9 in this embodiment includes a zinc chromite protection layer 91 coated on the outer surface of the bolt head 2, and a connection groove 92 opened on the outer end surface of the bolt head 2, wherein the outer surface of the zinc chromite protection layer 91 is coated with an acrylic protection layer 93, and the inside of the connection groove 92 is filled and covered by an extension part of the zinc chromite protection layer 91;
When fastening bolt uses, provide further anticorrosion protection for bolt head 2 through chromizing zinc protective layer 91, further improve the life of bolt head 2, and through being provided with spread groove 92, part enters into in spread groove 92 when coating chromizing zinc protective layer 91, can effectively improve chromizing zinc protective layer 91 and connect the stability of bolt head 2, and acrylic acid protective layer 93's setting can effectively improve the waterproof performance of bolt head 2, be favorable to preventing fastening bolt when transporting, storing and using by the rainwater erosion, improve the protection effect to fastening bolt.
The foregoing is merely a preferred example of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. An anti-corrosion fastening bolt comprises a screw rod and a bolt head arranged at the upper end part of the screw rod;
the bolt head is characterized in that a protective cover is movably sleeved outside the bolt head, a first sealing ring is detachably arranged at the bottom of the outer side of the bolt head, an expansion cover is arranged at the bottom of the protective cover, and the protective cover is connected with the bolt head through a connecting piece;
the top of the inner side of the expansion cover is movably embedded with a movable ring, the movable ring is connected with a pressing cylinder through a spring, the pressing cylinder is movably arranged at the bottom of the inner side of the expansion cover, and the bottom of the pressing cylinder is fixedly provided with a second sealing ring;
The protective layer comprises a zinc chromite protective layer coated on the outer surface of the bolt head and a connecting groove formed in the outer side end surface of the bolt head, wherein an acrylic protective layer is coated on the outer surface of the zinc chromite protective layer, and the inside of the connecting groove is filled and covered by the zinc chromite protective layer.
2. The anti-corrosion fastening bolt according to claim 1, wherein: the connecting piece is a threaded column integrally formed with the top of the inner side of the protective cover, and a threaded groove matched with the threaded column is formed in the middle of the top end face of the bolt head.
3. The anti-corrosion fastening bolt according to claim 1, wherein: the outer wall of safety cover is provided with a plurality of antiskid stripe along circumferencial direction equidistance.
4. The anti-corrosion fastening bolt according to claim 1, wherein: the protective cover and the expansion cover enclose to form a cover body structure with a sealed top and an open bottom, and the joint of the protective cover and the expansion cover is in a step shape.
5. The anti-corrosion fastening bolt according to claim 1, wherein: the bottom end face of the pressure cylinder is lower than the bottom end face of the expansion cover, an annular convex eave is arranged at the bottom of the outer side of the pressure cylinder along the circumferential direction, and the bottom of the convex eave is completely covered by the second sealing ring.
6. The anti-corrosion fastening bolt according to claim 1, wherein: the inner side wall of the expansion cover is adhered with a second sealing ring, and the inner ring of the second sealing ring in the expansion cover is adhered to the side surface of the pressing cylinder.
7. The anti-corrosion fastening bolt according to claim 1, wherein: the top of the outer side of the bolt head is a regular hexagon cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323226569.3U CN221074927U (en) | 2023-11-27 | 2023-11-27 | Corrosion-resistant fastening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323226569.3U CN221074927U (en) | 2023-11-27 | 2023-11-27 | Corrosion-resistant fastening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074927U true CN221074927U (en) | 2024-06-04 |
Family
ID=91259952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323226569.3U Active CN221074927U (en) | 2023-11-27 | 2023-11-27 | Corrosion-resistant fastening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074927U (en) |
-
2023
- 2023-11-27 CN CN202323226569.3U patent/CN221074927U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |