CN113802456A - Stay cable anticorrosion protective sleeve and operation method - Google Patents
Stay cable anticorrosion protective sleeve and operation method Download PDFInfo
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- CN113802456A CN113802456A CN202111062726.4A CN202111062726A CN113802456A CN 113802456 A CN113802456 A CN 113802456A CN 202111062726 A CN202111062726 A CN 202111062726A CN 113802456 A CN113802456 A CN 113802456A
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- wall
- protective sleeve
- fixedly connected
- sleeve body
- protective
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- 230000001681 protective effect Effects 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 30
- 238000001125 extrusion Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000007797 corrosion Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000011017 operating method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anti-corrosion protection sleeve for a stay cable and an operation method, and belongs to the technical field of construction of various stay cable bridge engineering. The protective sleeve comprises a protective sleeve body and hangers, wherein the outer wall of the bottom of each hanger is fixedly connected with a lifting rope, and the outer wall of the bottom of each lifting rope is fixedly connected with an impact ball.
Description
Technical Field
The invention relates to the technical field of construction of various stay cable bridge engineering, in particular to an anti-corrosion protective sleeve for a stay cable and an operation method.
Background
The stay cable is in a region crossing rivers and gulfs for a long time, is exposed in the environment of wind, rain, moisture and polluted air for a long time, and is made of steel, so that the stay cable is extremely easy to corrode if the stay cable is not protected properly. The corrosion of the stay cable is mainly caused by oxidation-reduction reaction caused by electrochemical action between steel materials in a cable body and surrounding media. Common factors causing the corrosion of the stay cable include air, water, chloride ions, tensile stress continuously acting on the high-strength steel wire and the like, and all the factors cause the corrosion of steel, and stress corrosion cracks and hydrogen fracture are generated. Alloy elements, cementite and other impurities in the steel wires of the stay cables often form a cathode, iron elements form an anode, and when water vapor is condensed and adsorbed on the surfaces of the stay cables to form a water film, countless micro-batteries are formed, oxygen, sulfur dioxide, carbon dioxide and the like in the air can be continuously dissolved in the water film to promote ionization of the iron elements, accelerate the corrosion speed of steel, and finally cause the corrosion of the stay cables.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and therefore, the invention is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an anticorrosive protective sheath of suspension cable, includes protective sheath body and gallows, every the equal fixedly connected with lifting rope of bottom outer wall of gallows, and the equal fixedly connected with impact ball of bottom outer wall of every lifting rope, the impartial distance fixedly connected with of outer wall of every impact ball assists the striking piece, and the annular distribution of supplementary striking piece is in the outside of impact ball, the outer wall equidistance fixedly connected with water conservancy diversion frame of protective sheath body, and the equal fixedly connected with side bearer of the relative one side outer wall of every two adjacent water conservancy diversion frames.
Preferably, the same fixing plate is fixedly connected to the outer wall of the opposite side of each two adjacent side frames.
Preferably, the outer wall of the top of the fixing plate is provided with a mounting hole, the inner wall of the mounting hole is fixedly connected with a fixing rod, and the hanging bracket is fixedly connected to the outer wall of the top of the fixing rod.
Preferably, the inner wall of protective sheath body is equipped with waterproof sealing layer No. one, and the inner wall of waterproof sealing layer No. one is equipped with waterproof sealing layer No. two.
Preferably, the outer wall of one side of the protective sleeve body is equidistantly provided with connecting grooves.
Preferably, the other side outer wall of protective sheath body equidistance fixedly connected with inserted bar, and the position and the quantity of inserted bar all correspond with the spread groove.
Preferably, every the equal fixedly connected with adjustable ring of outer wall of inserted bar, and the impartial distance of outer wall of every adjustable ring has the extrusion closing plate through hinged joint, and the inserted bar is close to the equal fixedly connected with stationary blade of outer wall of every extrusion closing plate, and the same extrusion spring of the relative one side outer wall fixedly connected with of stationary blade and corresponding extrusion closing plate.
The operation method comprises the following steps: during the use, drop in protective sheath body top when the rainwater, the rainwater is direct to the below of protective sheath body through the water conservancy diversion frame direction, reduce the frequency of rainwater and the contact of protective sheath body, and simultaneously, external wind-force strikes the lifting rope, make the lifting rope drive impact ball and supplementary striking piece strike the outer wall of protective sheath body, thereby make the adnexed rainwater of protective sheath body outer wall drop, avoid the rainwater to depend on the outer wall of protective sheath body and slide the corruption that causes the protective sheath body, when carrying out the installation of both ends protective sheath body, insert the inserted bar in corresponding spread groove, male in-process, the extrusion spring is extruded, make the inner wall of extrusion closing plate and spread groove contact closely, thereby improve both ends protective sheath body connection compactness, improve the whole sealed effect of this protective sheath body.
Compared with the prior art, the invention has the following beneficial effects:
1. by arranging the hanging bracket, the lifting rope, the impact ball and the auxiliary impact block, after the protective sleeve body is installed, the protective sleeve body is positioned under an external environment, external rainwater drips on the outer wall of the protective sleeve body, and the lifting rope is impacted by wind power, so that the lifting rope drives the impact ball and the auxiliary impact block to impact the outer wall of the protective sleeve body, the rainwater attached to the outer wall of the protective sleeve body falls off, the corrosion of the protective sleeve body caused by the fact that the rainwater slides depending on the outer wall of the protective sleeve body is avoided, the service life of the protective sleeve body is prolonged by the mode, and then the anticorrosion protection effect of the stay cable is improved;
2. by arranging the inserted bar, the extrusion sealing plate, the adjusting ring and the extrusion spring, when the two end protective sleeve bodies are connected, the inserted bar is inserted into the corresponding connecting groove, and in the inserting process, the extrusion spring is extruded to enable the extrusion sealing plate to be in close contact with the inner wall of the connecting groove, so that the connection tightness of the two end protective sleeve bodies is improved, the waterproof performance is improved, and the corrosion prevention effect is improved;
3. through being provided with waterproof sealing layer, waterproof sealing layer and water conservancy diversion frame No. two, install waterproof sealing layer and waterproof sealing layer No. two between suspension cable and protective sheath body, thereby improve whole waterproof sealing effect, the probability of the reduction suspension cable and the water contact of very big probability, further improve waterproof effect, and simultaneously, the water conservancy diversion frame is installed in the outer wall of protective sheath body, the rainwater is direct to be passed through the below of water conservancy diversion frame direction to protective sheath body, reduce the frequency of rainwater and the contact of protective sheath body, thereby further prolong the life of protective sheath body.
Drawings
FIG. 1 is a schematic structural diagram according to the present invention;
FIG. 2 is a side view of the overall structure proposed by the present invention;
FIG. 3 is a schematic view of the structure of the insertion rod according to the present invention;
fig. 4 is a schematic structural view of the impact ball proposed by the present invention.
In the drawings: 1. a protective sheath body; 2. striking a ball; 3. a side frame; 4. a fixing plate; 5. a flow guide frame; 6. a hanger; 7. connecting grooves; 8. a second waterproof sealing layer; 9. a lifting rope; 10. fixing the rod; 11. an auxiliary impact block; 12. inserting a rod; 13. a fixing sheet; 14. an adjusting ring; 15. extruding the sealing plate; 16. a compression spring; 17. a waterproof sealing layer I.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, an anti-corrosion protection sleeve for a stay cable comprises a protection sleeve body 1 and hangers 6, wherein the outer wall of the bottom of each hanger 6 is fixedly connected with a lifting rope 9, the outer wall of the bottom of each lifting rope 9 is fixedly connected with an impact ball 2, the outer wall of each impact ball 2 is fixedly connected with an auxiliary impact block 11 at equal intervals, the auxiliary impact blocks 11 are annularly distributed on the outer side of the impact ball 2, the outer wall of the protection sleeve body 1 is fixedly connected with flow guide frames 5 at equal intervals, the outer wall of the opposite side of each two adjacent flow guide frames 5 is fixedly connected with a side frame 3, the protection sleeve body 1 is arranged and located in an external environment after being installed by the hangers 6, the lifting rope 9, the impact balls 2 and the auxiliary impact blocks 11, external rainwater drips on the outer wall of the protection sleeve body 1, wind power impacts the lifting rope 9, so that the lifting rope 9 drives the impact balls 2 and the auxiliary impact blocks 11 to impact the outer wall of the protection sleeve body 1, thereby make the adnexed rainwater of protective sheath body 1 outer wall drop, avoid the rainwater to depend on the outer wall of protective sheath body 1 and slide and cause the corruption of protective sheath body 1, through the life of this kind of mode extension protective sheath body 1, improve the anticorrosive protection effect of suspension cable then. Every two adjacent side bearer 3's the same fixed plate 4 of relative one side outer wall fixedly connected with, the top outer wall of fixed plate 4 is opened there is the mounting hole, and the inner wall fixedly connected with dead lever 10 of mounting hole, 6 fixed connection of gallows in the top outer wall of dead lever 10, and the inner wall of protective sheath body 1 is equipped with waterproof sealing layer 17 No. one, and the inner wall of waterproof sealing layer 17 is equipped with waterproof sealing layer 8 No. two. The connecting grooves 7 are equidistantly formed in the outer wall of one side of the protective sleeve body 1, the inserting rods 12 are fixedly connected to the outer wall of the other side of the protective sleeve body 1 at equal intervals, and the positions and the number of the inserting rods 12 correspond to the connecting grooves 7.
According to the invention, the adjusting rings 14 are fixedly connected to the outer wall of each inserting rod 12, the outer wall of each adjusting ring 14 is connected with the extrusion sealing plate 15 through hinges at equal distances, the outer wall of each inserting rod 12 close to each extrusion sealing plate 15 is fixedly connected with the fixing piece 13, the fixing piece 13 and the outer wall of the opposite side of the corresponding extrusion sealing plate 15 are fixedly connected with the same extrusion spring 16, the inserting rods 12, the extrusion sealing plates 15, the adjusting rings 14 and the extrusion springs 16 are arranged, when the protective sleeve bodies 1 at two ends are connected, the inserting rods 12 are inserted into the corresponding connecting grooves 7, and in the inserting process, the extrusion springs 16 are extruded, so that the extrusion sealing plates 15 are in close contact with the inner walls of the connecting grooves 7, and therefore, the connection tightness of the protective sleeve bodies 1 at two ends is improved, the waterproof performance is improved, and the anticorrosion effect is improved.
The working principle is as follows: when in use, when rainwater drops on the upper part of the protective sleeve body 1, the rainwater is directly guided to the lower part of the protective sleeve body 1 through the flow guide frame 5, the contact frequency of the rainwater and the protective sleeve body 1 is reduced, meanwhile, the external wind impacts the lifting rope 9, so that the lifting rope 9 drives the impact ball 2 and the auxiliary impact block 11 to impact the outer wall of the protective sleeve body 1, thereby leading the rainwater attached to the outer wall of the protective sleeve body 1 to fall off, avoiding the rainwater from attaching to the outer wall of the protective sleeve body 1 to slide to cause the corrosion of the protective sleeve body 1, and when the protective sleeve bodies 1 at the two ends are installed, the insertion rods 12 are inserted into the respective coupling grooves 7, and during the insertion, the pressing springs 16 are pressed, so that the pressing sealing plates 15 are brought into close contact with the inner walls of the coupling grooves 7, thereby improve both ends protective sheath body 1 and connect the compactness, improve this protective sheath body 1's whole sealed effect.
The operation method comprises the following steps: when in use, when rainwater drops on the upper part of the protective sleeve body 1, the rainwater is directly guided to the lower part of the protective sleeve body 1 through the flow guide frame 5, the contact frequency of the rainwater and the protective sleeve body 1 is reduced, meanwhile, the external wind impacts the lifting rope 9, so that the lifting rope 9 drives the impact ball 2 and the auxiliary impact block 11 to impact the outer wall of the protective sleeve body 1, thereby leading the rainwater attached to the outer wall of the protective sleeve body 1 to fall off, avoiding the rainwater from attaching to the outer wall of the protective sleeve body 1 to slide to cause the corrosion of the protective sleeve body 1, and when the protective sleeve bodies 1 at the two ends are installed, the insertion rods 12 are inserted into the respective coupling grooves 7, and during the insertion, the pressing springs 16 are pressed, so that the pressing sealing plates 15 are brought into close contact with the inner walls of the coupling grooves 7, thereby improve both ends protective sheath body 1 and connect the compactness, improve this protective sheath body 1's whole sealed effect.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. The technical solution and the inventive concept thereof according to the present invention should be equally replaced or changed within the protection scope of the present invention.
Claims (8)
1. The utility model provides an anticorrosive protective sheath of suspension cable, includes protective sheath body (1) and gallows (6), its characterized in that, every the equal fixedly connected with lifting rope (9) of bottom outer wall of gallows (6), and the equal fixedly connected with impact ball (2) of bottom outer wall of every lifting rope (9), the impartial distance fixedly connected with of outer wall of every impact ball (2) assists striking piece (11), and supplementary striking piece (11) ring distribution is in the outside of impact ball (2), the outer wall equidistance fixedly connected with water conservancy diversion frame (5) of protective sheath body (1), and the equal fixedly connected with side bearer (3) of the relative one side outer wall of every two adjacent water conservancy diversion frames (5).
2. The anti-corrosion protective sleeve for the stay cable according to claim 1, wherein the same fixing plate (4) is fixedly connected to the outer wall of the opposite side of each two adjacent side frames (3).
3. The anti-corrosion protection sleeve for the stay cable according to claim 2, wherein a mounting hole is formed in the outer wall of the top of the fixing plate (4), a fixing rod (10) is fixedly connected to the inner wall of the mounting hole, and the hanger (6) is fixedly connected to the outer wall of the top of the fixing rod (10).
4. The stay cable anticorrosion protective sleeve according to claim 1, wherein a first waterproof sealing layer (17) is arranged on the inner wall of the protective sleeve body (1), and a second waterproof sealing layer (8) is arranged on the inner wall of the first waterproof sealing layer (17).
5. The corrosion-resistant protective sheath for the stayed cable according to claim 1, wherein the outer wall of one side of the protective sheath body (1) is provided with connecting grooves (7) at equal intervals.
6. The anti-corrosion protective sleeve for the stay cable according to claim 5, wherein the outer wall of the other side of the protective sleeve body (1) is fixedly connected with inserting rods (12) at equal intervals, and the positions and the number of the inserting rods (12) correspond to the connecting grooves (7).
7. The anti-corrosion protection sleeve for the stay cable according to claim 6, wherein the outer wall of each insert rod (12) is fixedly connected with an adjusting ring (14), the outer wall of each adjusting ring (14) is connected with a compression sealing plate (15) at equal distance through a hinge, the outer wall of each compression sealing plate (15) close to the insert rod (12) is fixedly connected with a fixing plate (13), and the outer wall of the opposite side of the fixing plate (13) and the outer wall of the opposite side of the corresponding compression sealing plate (15) are fixedly connected with the same compression spring (16).
8. The operating method of the stay cable anticorrosion protective sleeve as recited in claim 6, characterized in that the steps comprise: when the rain water protective sleeve is used, when rain water drops above the protective sleeve body (1), the rain water is directly guided to the lower part of the protective sleeve body (1) through the diversion frame (5), the contact frequency of the rain water and the protective sleeve body (9) is reduced, meanwhile, external wind power impacts the lifting rope (9), so that the lifting rope (9) drives the impact ball (2) and the auxiliary impact block (11) to impact the outer wall of the protective sleeve body (1), the rain water attached to the outer wall of the protective sleeve body (1) falls off, the corrosion of the protective sleeve body (1) caused by the fact that the rain water slides attached to the outer wall of the protective sleeve body (1) is avoided, when the protective sleeve bodies (1) at two ends are installed, the insertion rod (12) is inserted into the corresponding connecting groove (7), and in the inserting process, the extrusion spring (16) is extruded, so that the extrusion sealing plate (15) is closely contacted with the inner wall of the connecting groove (7), thereby improve both ends protective sheath body (1) and connect the compactness, improve the whole sealed effect of this protective sheath body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062726.4A CN113802456A (en) | 2021-09-10 | 2021-09-10 | Stay cable anticorrosion protective sleeve and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062726.4A CN113802456A (en) | 2021-09-10 | 2021-09-10 | Stay cable anticorrosion protective sleeve and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113802456A true CN113802456A (en) | 2021-12-17 |
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ID=78940781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111062726.4A Pending CN113802456A (en) | 2021-09-10 | 2021-09-10 | Stay cable anticorrosion protective sleeve and operation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113802456A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095376A (en) * | 2006-10-11 | 2008-04-24 | Bridge Engineering:Kk | Method of waterproofing cable anchoring section of cable-stayed bridge, and device for use therein |
| CN202416176U (en) * | 2011-11-30 | 2012-09-05 | 成都盛尔嘉科技有限公司 | Vibration-proof anticorrosion bridge cable |
| CN202626832U (en) * | 2012-06-15 | 2012-12-26 | 威胜利工程有限公司 | Outer sleeve for bracing cable |
| CN205529908U (en) * | 2016-01-22 | 2016-08-31 | 刘杰 | Suspension cable PE sleeve |
| CN106012837A (en) * | 2016-07-29 | 2016-10-12 | 重庆万桥交通科技发展有限公司 | Novel stay cable HDPE waterproof jacket |
| CN110453601A (en) * | 2019-07-26 | 2019-11-15 | 江阴法尔胜住电新材料有限公司 | A kind of steel strand stay cable |
| CN210527547U (en) * | 2019-09-24 | 2020-05-15 | 江苏威尔盾耐磨工业有限公司 | Anticorrosive wear-resisting elephant trunk |
-
2021
- 2021-09-10 CN CN202111062726.4A patent/CN113802456A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095376A (en) * | 2006-10-11 | 2008-04-24 | Bridge Engineering:Kk | Method of waterproofing cable anchoring section of cable-stayed bridge, and device for use therein |
| CN202416176U (en) * | 2011-11-30 | 2012-09-05 | 成都盛尔嘉科技有限公司 | Vibration-proof anticorrosion bridge cable |
| CN202626832U (en) * | 2012-06-15 | 2012-12-26 | 威胜利工程有限公司 | Outer sleeve for bracing cable |
| CN205529908U (en) * | 2016-01-22 | 2016-08-31 | 刘杰 | Suspension cable PE sleeve |
| CN106012837A (en) * | 2016-07-29 | 2016-10-12 | 重庆万桥交通科技发展有限公司 | Novel stay cable HDPE waterproof jacket |
| CN110453601A (en) * | 2019-07-26 | 2019-11-15 | 江阴法尔胜住电新材料有限公司 | A kind of steel strand stay cable |
| CN210527547U (en) * | 2019-09-24 | 2020-05-15 | 江苏威尔盾耐磨工业有限公司 | Anticorrosive wear-resisting elephant trunk |
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Application publication date: 20211217 |