CN118066198A - Fiber composite lifting lug protective cover and hidden connection method - Google Patents
Fiber composite lifting lug protective cover and hidden connection method Download PDFInfo
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- CN118066198A CN118066198A CN202410103414.0A CN202410103414A CN118066198A CN 118066198 A CN118066198 A CN 118066198A CN 202410103414 A CN202410103414 A CN 202410103414A CN 118066198 A CN118066198 A CN 118066198A
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- lifting lug
- fiber composite
- adhesive
- protective cover
- plug
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- 239000002131 composite material Substances 0.000 title claims abstract description 98
- 239000000835 fiber Substances 0.000 title claims abstract description 72
- 230000001681 protective effect Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 52
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 60
- 230000001070 adhesive effect Effects 0.000 claims description 60
- 239000003292 glue Substances 0.000 claims description 21
- 238000007790 scraping Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Abstract
The invention provides a fiber composite lifting lug protective cover and a hidden connection method, and belongs to the field of design and manufacture of fiber composite materials. The novel lifting lug protection shell comprises a lifting lug protection shell body, a connecting screw, a plurality of plugs and a spring washer, wherein after the metal structural member and the fiber composite lifting lug protection shell body are connected in a gluing mode, the metal structural member and the fiber composite lifting lug protection shell body are connected in a screwed mode through the connecting screw and the spring washer, and then the plugs are connected in corresponding positions in a gluing mode respectively, hidden stable connection between the metal structural member and the fiber composite lifting lug protection shell body is achieved, the bearing performance and the light weight requirement of a revolving body lifting lug bearing structure are guaranteed, and a protection effect is achieved on the metal lifting lug. The method realizes stable connection between the composite material part and the metal part, has excellent bearing, good profile matching and simple operation.
Description
Technical Field
The invention belongs to the field of design and manufacture of fiber composite materials, and particularly relates to a fiber composite material lifting lug protective cover and a hidden connection method.
Background
The fiber composite material has the advantages of light weight, high strength, high temperature resistance, corrosion resistance, fatigue resistance and the like, and is gradually and widely applied to the fields of aviation, aerospace and the like by virtue of the advantages of weight, strength, toughness and service life. However, compared with the connection of the traditional metal structure, the fiber composite material has far lower wear resistance and connection strength than the metal material due to the limitations of materials, processes and the like, and the connection mode of the traditional metal structure cannot be adopted. For the rotary structural member with lifting bearing requirements, in order to achieve the weight reduction of products on the basis of bearing requirements, the fiber composite material component is often used as an auxiliary component to be connected with the metal lifting bearing component, so that the weight reduction of the products is achieved to the greatest extent, the metal component is protected, and the requirements are put forward on the connection mode between the fiber composite material and the metal component.
Disclosure of Invention
In view of the above, the invention provides the composite lifting lug protective cover and the hidden connecting method, which realize stable connection between the composite part and the metal part, and have the advantages of excellent bearing, good profile matching and simple operation.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a hidden connection method of a fiber composite lifting lug protective cover specifically comprises the following steps:
step 1: uniformly coating a layer of adhesive on the bonding surface of the fiber composite lifting lug protective cover, and uniformly coating a layer of adhesive on the bonding surface of the lifting lug and the lifting lug protective shell;
Step 2: the method comprises the steps of enabling a lug bonding surface of a fiber composite material lug protective cover coated with an adhesive to face a lug surface, enabling a lug protective shell to face a lug and be bonded and configured on a metal structural member, and adjusting the position of the fiber composite material lug protective cover to enable through holes to correspond to threaded holes in the metal structural member respectively;
Step 3: uniformly coating a layer of adhesive on the connecting screw, penetrating into the spring washer and the through hole respectively, screwing into the threaded hole on the metal structural member, screwing up, and connecting and fixing the metal structural member and the fiber composite lifting lug protective cover;
Step 4: uniformly coating a layer of adhesive on the bottom surface and the cylindrical surface of each plug, slowly pushing the adhesive into the connecting holes, discharging gas through the glue overflow grooves, adjusting the positions of the plugs through the straight grooves after pushing the gas to the bottom, enabling the plugs to correspond to the molded surfaces of the fiber composite lifting lug protective covers, standing and solidifying, overflowing the redundant adhesive through the glue overflow grooves, and cleaning off overflowed residues at all parts after solidification;
Step 5: the adhesive is smeared and filled in the straight groove, the plastic scraping plate is used for scraping redundant adhesive along the molded surface of the fiber composite material lifting lug protective cover, the scraping plate is scraped to the straight groove to be consistent with the molded surface of the fiber composite material lifting lug protective cover and is in smooth transition, the hidden stable connection between the metal structural part and the fiber composite material lifting lug protective cover is completed, the bearing performance and the light weight requirement of the bearing structure of the revolving body lifting lug are ensured, and the protection effect on the metal lifting lug is achieved.
Furthermore, a layer of adhesive with the thickness of 0.01mm is uniformly coated on the bonding surface, a layer of adhesive with the thickness of 0.1mm is uniformly coated on the bonding surface of the lifting lug and the protecting shell of the lifting lug, a layer of adhesive with the thickness of 0.1mm is uniformly coated on the connecting screw, and a layer of adhesive with the thickness of 0.1mm is uniformly coated on the bottom surface and the cylindrical surface of the plug.
The utility model provides a combined material lug protection casing that hidden connection method of combined material lug protection casing adopted, combined material lug protection casing includes lug protecting crust, connecting screw, a plurality of end caps and spring washer, and combined material lug protection casing glues with metal structure spare, then carries out the spiro union with metal structure spare and fibre combined material lug protection casing through connecting screw and spring washer, again with a plurality of end caps glue joint connection in corresponding position respectively, lug protecting crust is at the lug periphery.
Furthermore, a plurality of through holes are designed on the composite lifting lug protective cover, and the connecting screws penetrate into the spring washers and the through holes and are screwed into threaded holes in the metal structural parts to carry out hidden connection and fixation on the metal structural parts and the fiber composite lifting lug protective cover.
Furthermore, a plurality of connecting holes are designed on the fiber composite lifting lug protective cover, and each plug is inserted into the corresponding connecting hole for gluing.
Furthermore, the glue overflow groove is designed on the plug, redundant gas can be removed during installation, the plug is ensured to be installed at the corresponding position, and redundant adhesive is discharged through the glue overflow groove.
Furthermore, a straight slot is designed on the plug, and the position of the plug can be adjusted through the straight slot.
And further, smearing and filling the adhesive in the straight groove, and scraping the excessive adhesive along the profile of the composite lifting lug protective cover by using a plastic scraping plate to form an outer profile with a consistent profile and smooth transition.
Furthermore, 4 plugs are designed, namely a left small plug, a left large plug, a right small plug and a right large plug, and the outer end surfaces of the left small plug, the left large plug, the right small plug and the right large plug are designed according to the molded surface of the composite lifting lug protective cover.
Compared with the prior art, the composite lifting lug protective cover and the hidden connection method have the beneficial effects that:
(1) The composite material lifting lug protective cover and the hidden connection method realize hidden stable connection between the metal structural part and the fiber composite material lifting lug protective cover, ensure the bearing property and the light weight requirement of a bearing structure of the revolving body lifting lug, and play a role in protecting the metal lifting lug.
(2) The connecting method realizes stable connection between the composite material part and the metal part, has excellent bearing, good profile matching and simple operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view, partially in section, of a rear view of a composite shackle shield and hidden connection method according to the present invention;
FIG. 2 is a schematic front view of a composite lifting lug shield according to the present invention;
FIG. 3 is a schematic view of a metal structural member of a composite lifting lug shield according to the present invention;
FIG. 4 is an enlarged schematic view of a cross-section of a metallic structural member A-A of a composite lifting lug shield according to the invention;
FIG. 5 is a schematic view in partial cross-section of a fiber composite lifting lug shield of a composite lifting lug shield of the present invention;
FIG. 6 is a schematic top view of a fiber composite lifting lug shield according to the present invention;
fig. 7 is a top view of a plug according to the present invention.
Fig. 8 is a schematic view of a left small plug of a composite lifting lug shield according to the invention;
fig. 9 is a schematic view of a left large plug of a composite lifting lug shield according to the invention;
Fig. 10 is a schematic view of a right large plug of a composite lifting lug shield according to the invention;
FIG. 11 is a schematic view of a right small plug of a composite lifting lug shield according to the invention;
The lifting lug protective cover comprises a 1-metal structural part, a 2-fiber composite lifting lug protective cover, a 3-connecting screw, a 4-left small plug, a 5-left large plug, a 6-right small plug, a 7-right large plug, an 8-spring washer, a 9-lifting lug, a 10-bonding surface, a 11-first through hole, a 12-second through hole, a 13-third through hole, a 14-fourth through hole, a 15-threaded hole, a 16-lifting lug bonding surface, a 17-lifting lug surface, a 18-glue overflow groove, a 19-straight groove, a 20-first connecting hole, a 21-second connecting hole, a 22-third connecting hole, a 23-fourth connecting hole and a 24-lifting lug protective cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-11 for illustrating the present embodiment, a composite lifting lug protection cover, 3. Including a lifting lug protection cover 24, a connecting screw 3, a plurality of plugs and a spring washer 8, the fiber composite lifting lug protection cover 2 is glued to the metal structural member 1, then the metal structural member 1 and the fiber composite lifting lug protection cover 2 are screwed through the connecting screw 3 and the spring washer 8, and then a plurality of plugs are glued to corresponding positions respectively, and the lifting lug protection cover 24 is sleeved on the periphery of the lifting lug 9.
The fiber composite lifting lug protective cover 2 is provided with a plurality of through holes, the connecting screw 3 penetrates into the spring washer 8 and the through holes and is screwed into the threaded hole 15 on the metal structural member 1, and the metal structural member 1 and the fiber composite lifting lug protective cover 2 are connected and fixed in a hidden mode.
And a plurality of connecting holes are designed on the fiber composite lifting lug protective cover 2, and a plurality of plugs are inserted into the connecting holes for cementing. The connecting hole and the penetrating hole penetrate through.
The fiber composite lifting lug protective cover 2 is provided with a lifting lug protective shell 24, a hidden through hole 11/12/13/14 and a connecting hole 20/21/22/23. The fiber composite lifting lug protective cover 2 protects the metal lifting lug 9 through the lifting lug protective shell 24. The connecting screw 3 is penetrated into the spring washer 8 and the through hole 11/12/13/14 by adopting the cementing and screw connection technology, screwed into the threaded hole 15, the metal structural part 1 and the fiber composite lifting lug protective cover 2 are connected and fixed in a hidden mode, and the plug 4/5/6/7 is inserted into the connecting hole 20/21/22/23 for cementing.
The glue overflow groove 18 is formed in the plug, redundant gas can be removed during installation, the plug is guaranteed to be installed at a corresponding position, and redundant adhesive is discharged through the glue overflow groove 18.
A straight groove 19 is designed on the plug, the position of the plug can be adjusted through the straight groove 19, the adhesive is smeared and filled in the straight groove 19, and the plastic scraping plate is used for scraping the redundant adhesive along the molded surface of the composite lifting lug protective cover, so that an outer molded surface with the consistent molded surface and smooth transition is formed.
The number of plugs is 4, namely a left small plug 4, a left large plug 5, a right small plug 6 and a right large plug 7, and the outer end surfaces of the left small plug 4, the left large plug 5, the right small plug 6 and the right large plug 7 are designed according to the molded surface of the fiber composite lifting lug protective cover 2, so that the shape adaptability after installation is good.
After the metal structural part 1 and the fiber composite material lifting lug protective cover 2 are connected in a gluing mode, the metal structural part 1 and the fiber composite material lifting lug protective cover 2 are connected in a screwed mode through the connecting screw 3 and the spring washer 8, and then the plugs 4/5/6/7 are connected in a corresponding position in a gluing mode respectively, so that hidden stable connection between the metal structural part 1 and the fiber composite material lifting lug protective cover 2 is achieved, the bearing performance and the light weight requirement of a revolving body lifting lug bearing structure are guaranteed, and a protection effect is achieved on the metal lifting lug 9.
The hidden connection method of the composite lifting lug protective cover specifically comprises the following steps:
Step 1: the fiber composite lifting lug protective cover 2 is uniformly coated with a layer of adhesive with the thickness of 0.01mm on the bonding surface 10, and a layer of adhesive with the thickness of 0.1mm is uniformly coated on the bonding surface 16 and the lifting lug protective shell 24.
Step 2: the lug bonding surface 16 of the fiber composite lug protective cover 2 coated with the adhesive faces the lug surface 17, the lug protective shell 24 faces the lug 9 and is bonded and configured on the metal structural member 1, and the position of the fiber composite lug protective cover 2 is adjusted so that the through holes 11/12/13/14 respectively correspond to the threaded holes 15 on the metal structural member 1.
Step 3: and uniformly coating a layer of adhesive with the thickness of 0.1mm on the connecting screw 3, penetrating into the spring washer 8 and the through hole 11/12/13/14 respectively, screwing into the threaded hole 15 on the metal structural member 1, and screwing up to connect and fix the metal structural member 1 and the fiber composite lifting lug protective cover 2.
Step 4: uniformly coating a layer of adhesive with the thickness of 0.1mm on the bottom surface and the cylindrical surface of the left small plug 4, slowly pushing the adhesive into the first connecting hole 20, discharging gas through the glue overflow groove 18, pushing the adhesive to the bottom, adjusting the position of the left small plug 4 through the straight groove 19 to enable the adhesive to correspond to the molded surface of the lifting lug protective cover 2 made of the fiber composite material, standing and solidifying the adhesive, overflowing the adhesive through the glue overflow groove 18, and cleaning excessive overflowed parts at each part after solidification.
Step 5: and uniformly coating a layer of adhesive with the thickness of 0.1mm on the bottom surface and the cylindrical surface of the left large plug 5, slowly pushing the adhesive into the second connecting hole 21, discharging gas through the glue overflow groove 18, after pushing the adhesive to the bottom, adjusting the position of the left large plug 5 through the linear groove 19 to enable the left large plug to correspond to the molded surface of the fiber composite lifting lug protective cover 2, standing and solidifying, overflowing excessive adhesive through the glue overflow groove 18, and cleaning excessive overflowed parts at each part after solidification.
Step 6: and uniformly coating a layer of adhesive with the thickness of 0.1mm on the bottom surface and the cylindrical surface of the right small plug 6, slowly pushing the adhesive into the third connecting hole 22, discharging gas through the glue overflow groove 18, pushing the adhesive to the bottom, adjusting the position of the left small plug 4 through the linear groove 19 to enable the adhesive to correspond to the molded surface of the fiber composite lifting lug protective cover 2, standing and solidifying, overflowing excessive adhesive through the glue overflow groove 18, and cleaning excessive overflowed parts at each part after solidification.
Step 7: a layer of adhesive with the thickness of 0.1mm is evenly smeared on the bottom surface and the cylindrical surface of the right large plug 7, the adhesive is slowly pushed into the fourth connecting hole 23, gas is discharged through the glue overflow groove 18, after the gas is pushed to the bottom, the position of the left small plug 4 is adjusted through the straight groove 19, so that the left small plug corresponds to the molded surface of the fiber composite lifting lug protective cover 2, the fiber composite lifting lug protective cover is placed for solidification, the excessive adhesive overflows through the glue overflow groove 18, and excessive overflowed residues at all parts are cleaned after solidification.
Step 8: the adhesive is smeared and filled in the straight groove 19, the plastic scraping plate is used for scraping redundant adhesive along the molded surface of the fiber composite material lifting lug protective cover 2, the scraping plate is scraped to the straight groove 19 to be consistent with the molded surface of the fiber composite material lifting lug protective cover 2 and smoothly transits, the hidden stable connection between the metal structural part 1 and the fiber composite material lifting lug protective cover 2 is completed, the bearing performance and the light weight requirement of the bearing structure of the rotary body lifting lug are ensured, and the protection effect on the metal lifting lug is realized.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (9)
1. A hidden connection method of a fiber composite lifting lug protective cover is characterized by comprising the following steps: the method specifically comprises the following steps:
Step 1: uniformly coating a layer of adhesive on the bonding surface (10) of the fiber composite lifting lug protective cover (2), and uniformly coating a layer of adhesive on the bonding surface (16) of the lifting lug and the lifting lug protective shell (24);
Step 2: the lifting lug bonding surface (16) of the fiber composite lifting lug protective cover (2) coated with the adhesive faces the lifting lug surface (17), the lifting lug protective shell (24) faces the lifting lug (9) to be bonded and configured on the metal structural member (1), and the position of the fiber composite lifting lug protective cover (2) is adjusted so that the penetrating holes respectively correspond to the threaded holes (15) on the metal structural member (1);
Step 3: uniformly coating a layer of adhesive on the connecting screw (3), penetrating into the spring washer (8) and the through hole respectively, screwing into the threaded hole (15) on the metal structural member (1), and screwing up to connect and fix the metal structural member (1) and the fiber composite lifting lug protective cover (2);
Step 4: uniformly coating a layer of adhesive on the bottom surface and the cylindrical surface of each plug, slowly pushing the adhesive into the connecting holes, discharging gas through the glue overflow grooves (18), adjusting the positions of the plugs through the linear grooves (19) after pushing the gas to the bottom, enabling the plugs to correspond to the molded surfaces of the fiber composite lifting lug protective covers (2), standing and solidifying, overflowing the redundant adhesive through the glue overflow grooves (18), and cleaning off excessive overflowed parts at all positions after solidification;
step 5: the adhesive is smeared and filled in the straight groove (19), the plastic scraping plate is used for scraping redundant adhesive along the molded surface of the fiber composite lifting lug protective cover (2), the adhesive is scraped to the position of the straight groove (19) and the molded surface of the fiber composite lifting lug protective cover (2) to be consistent and smooth, the hidden stable connection between the metal structural part (1) and the fiber composite lifting lug protective cover (2) is completed, the bearing performance and the light weight requirement of the bearing structure of the revolving body lifting lug are ensured, and the protection effect on the metal lifting lug is achieved.
2. The concealed attachment method of a fiber composite shackle boot as defined by claim 1 wherein: a layer of adhesive with the thickness of 0.01mm is uniformly coated on the bonding surface (10), a layer of adhesive with the thickness of 0.1mm is uniformly coated on the bonding surface (16) of the lifting lug and the protecting shell (24) of the lifting lug, a layer of adhesive with the thickness of 0.1mm is uniformly coated on the connecting screw (3), and a layer of adhesive with the thickness of 0.1mm is uniformly coated on the bottom surface and the cylindrical surface of the plug.
3. A fiber composite shackle boot for use in a method of concealed attachment of a fiber composite shackle boot as defined by any one of claims 1-2, wherein: the fiber composite lifting lug protection cover (2) comprises a lifting lug protection shell (24), a connecting screw (3), a plurality of plugs and a spring washer (8), wherein the fiber composite lifting lug protection cover (2) is glued with the metal structural part (1), then the metal structural part (1) and the fiber composite lifting lug protection cover (2) are in screwed connection through the connecting screw (3) and the spring washer (8), the plugs are glued at corresponding positions respectively, and the lifting lug protection shell (24) is sleeved on the periphery of the lifting lug (9).
4. A composite lifting lug shield according to claim 3, wherein: the fiber composite lifting lug protective cover (2) is provided with a plurality of through holes, the connecting screw (3) penetrates into the spring washer (8) and the through holes and is screwed into the threaded hole (15) on the metal structural part (1), and the metal structural part (1) and the fiber composite lifting lug protective cover (2) are connected and fixed in a hidden mode.
5. A composite lifting lug shield according to claim 3, wherein: a plurality of connecting holes are designed on the fiber composite lifting lug protective cover (2), and each plug is inserted into the corresponding connecting hole for gluing.
6. A composite lifting lug shield according to claim 3, wherein: the side face of the plug is provided with a glue overflow groove (18), redundant gas can be discharged during installation, the plug is guaranteed to be installed at a corresponding position, and redundant adhesive is discharged through the glue overflow groove (18).
7. A composite lifting lug shield according to claim 3, wherein: the top of the plug is provided with a straight slot (19), and the position of the plug can be adjusted through the straight slot (19).
8. The composite shackle boot as defined by claim 7 wherein: and (3) smearing and filling the adhesive in the straight groove (19), and scraping the excessive adhesive along the profile of the composite lifting lug protective cover by using a plastic scraping plate to form an outer profile with a consistent profile and smooth transition.
9. The composite shackle protection cover according to any one of claims 6-8, wherein: the plug design has 4, is left little plug (4), left big plug (5), right little plug (6) and right big plug (7) respectively, the outer terminal surface of left little plug (4), left big plug (5), right little plug (6) and right big plug (7) is unanimous according to the profile of fibre combined material lug protection casing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103414.0A CN118066198A (en) | 2024-01-25 | 2024-01-25 | Fiber composite lifting lug protective cover and hidden connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410103414.0A CN118066198A (en) | 2024-01-25 | 2024-01-25 | Fiber composite lifting lug protective cover and hidden connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118066198A true CN118066198A (en) | 2024-05-24 |
Family
ID=91108277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410103414.0A Pending CN118066198A (en) | 2024-01-25 | 2024-01-25 | Fiber composite lifting lug protective cover and hidden connection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118066198A (en) |
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2024
- 2024-01-25 CN CN202410103414.0A patent/CN118066198A/en active Pending
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