Anchor head device for a suspension bridge cable

Abstract

This disclosure provides an anchor head device for suspension bridge cables, belonging to the field of bridge engineering. The anchor head device includes a lug plate, an anchor cup, and a sealing assembly; the lug plate is partially threaded into the anchor cup; the sealing assembly includes a waterproof cap, a retaining cover, a first sealing ring, and a second sealing ring. The waterproof cap is fitted over the connection between the anchor cup and the lug plate, and its first end is threaded to the lug plate. The second end of the waterproof cap is fitted over the anchor cup. The retaining cover is located at the second end of the waterproof cap and fitted over the anchor cup, and is connected to the waterproof cap. The first sealing ring is fitted over the anchor cup and is located in a groove defined by the waterproof cap, the retaining cover, and the anchor cup. The first sealing ring undergoes compressive deformation in its radially outward direction. The second sealing ring is clamped between the waterproof cap and the lug plate. This disclosure can improve the sealing performance of suspension bridge cables.

Description

Technical Field

[0001] This disclosure pertains to the field of bridge engineering, and specifically relates to an anchor head device for suspension bridge cables. Background Technology

[0002] The main cable of a suspension bridge is suspended and supported by suspenders. A suspension bridge suspender consists of an upper anchor head, strands, and a lower anchor head. The upper anchor head connects to the cable clamp, and the lower anchor head connects to the bridge. The upper and lower anchor heads can have the same structure. Here, the upper anchor head will be used as an example. Each anchor head includes a lug and an anchor cup. The anchor cup is filled with a zinc-copper alloy and fixed to the strands. The lug includes a connecting section and a connector, which connects to the cable clamp. The end of the connecting section furthest from the connector is threaded into the anchor cup. To adjust the overall length of the anchor head, the connecting section is not fully inserted into the anchor cup but is left partially. Because the suspenders are used in an open environment, to prevent corrosion of the threaded connection between the anchor cup and the lug, as well as the zinc-copper alloy poured into the anchor cup, the connection between the anchor cup and the lug must be well sealed with a sealing component to prevent the intrusion of humid air, rainwater, dust, and impurities.

[0003] In related technologies, the sealing assembly includes a waterproof cap, two O-rings, and a sealing ring. The waterproof cap is fitted over the pre-reserved section of the ear plate and the anchor cup, and is threadedly connected to the unconnected section of the ear plate, with the end face of the waterproof cap contacting the connecting head of the ear plate. The first O-ring is clamped between the end face of the waterproof cap and the connecting head of the ear plate. The second O-ring and the sealing ring are sequentially clamped along the axial direction of the anchor cup between the other end of the waterproof cap and the outer wall of the anchor cup, with the sealing ring located on the side of the second O-ring away from the ear plate. The sealing ring is threadedly connected to the waterproof cap. Thus, by screwing the waterproof cap onto the ear plate and tightening the first O-ring, and simultaneously by screwing the sealing ring onto the waterproof cap and tightening the second O-ring, a seal is achieved.

[0004] However, because O-rings are small-section seals, their sealing performance is poor and they are easily damaged, resulting in a short service life. Furthermore, the above sealing structure is relatively complex, requiring the machining of sealing grooves on the outer wall of the anchor cup to accommodate the O-ring, leading to high machining and assembly costs. Summary of the Invention

[0005] This disclosure provides an anchor head device for suspension bridge cables, which can improve the sealing performance of suspension bridge cables. The technical solution is as follows:

[0006] This disclosure provides an anchor head device for a suspension bridge cable. The anchor head device includes a lug plate, an anchor cup, and a sealing assembly. The lug plate is threaded into the anchor cup. The sealing assembly includes a waterproof cap, a retaining cover, a first sealing ring, and a second sealing ring. The waterproof cap is fitted over the connection between the anchor cup and the lug plate, with its first end threaded to the lug plate and its second end fitted over the anchor cup. The retaining cover is located at the second end of the waterproof cap and fitted over the anchor cup, connected to the waterproof cap. The first sealing ring is fitted over the anchor cup and located at the waterproof cap. Within the groove defined by the cover, the baffle, and the anchor cup, the first sealing ring undergoes compressive deformation in its radially outward direction; the second sealing ring is sandwiched between the waterproof cover and the ear plate, and the second sealing ring includes a first sealing segment and a second sealing segment connected to each other, the outer diameter of the first sealing segment is larger than the outer diameter of the second sealing segment, the end face of the first sealing segment away from the second sealing segment is in sealing contact with the ear plate, the end face of the first sealing segment away from the second sealing segment is radially parallel to the first sealing segment, and the second sealing segment undergoes compressive deformation in its radially outward direction.

[0007] In another implementation of this disclosure, both the first sealing ring and the second sealing ring are lip-shaped sealing rings; the lip of the first sealing ring is away from the cover along its own axis, and the lip of the second sealing ring is towards the anchor cup along its own axis.

[0008] In another implementation of this disclosure, the first end face of the waterproof cover away from the cover has a first sealing groove. The first sealing groove includes a first groove segment and a second groove segment. The inner diameter of the first groove segment is larger than that of the second groove segment. One end of the first groove segment is located on the first end face. The second groove segment is located at the end of the first groove segment away from the first end face and is connected to the first groove segment. The first sealing segment is located inside the first groove segment, and the second sealing segment is located inside the second groove segment.

[0009] In another implementation of this disclosure, the second end face of the waterproof cover near the cover has a second sealing groove, and the first sealing ring is located in the second sealing groove.

[0010] In another implementation of this disclosure, the waterproof cover includes a first connecting segment and a second connecting segment connected to each other. The inner diameter of the first connecting segment is smaller than that of the second connecting segment. The first connecting segment is sleeved on the outside of the ear plate, and the end face of the first connecting segment away from the second connecting segment is in contact with the ear plate. The second connecting segment is sleeved on the outside of the anchor cup.

[0011] In another implementation of this disclosure, the sealing assembly further includes a dust seal located at the end of the cover away from the waterproof cover and clamped between the cover and the anchor cup.

[0012] In another implementation of this disclosure, the cover has a retaining ring groove on the end face away from the second end face; the retaining ring groove includes a first retaining ring groove segment and a second retaining ring groove segment, the inner diameter of the first retaining ring groove segment is larger than the inner diameter of the second retaining ring groove segment, one end of the second retaining ring groove segment is located on the second end face, and the first retaining ring groove segment is located at the end of the second retaining ring groove segment away from the second end face and is connected to the second retaining ring groove segment; the dustproof ring includes a first dustproof segment and a second dustproof segment connected to each other, the outer diameter of the first dustproof segment is larger than the outer diameter of the second dustproof segment, the first dustproof segment is located within the first retaining ring groove segment, and the second dustproof segment is located within the second retaining ring groove segment.

[0013] In another implementation of this disclosure, the cover includes a connecting ring and a sleeve ring, the connecting ring being sleeved outside the sleeve ring and located at the end of the sleeve ring facing the waterproof cover; the retaining ring groove is located inside the sleeve ring, and the connecting ring is provided with a plurality of connecting holes spaced apart along its circumference, the connecting holes being connected to the waterproof cover by fasteners.

[0014] In another implementation of this disclosure, the ear plate includes a connector, a transition section, and a connecting section connected sequentially. The outer diameter of the transition section is smaller than the outer diameter of the connector, and the outer diameter of the connecting section is smaller than the outer diameter of the transition section. The end face of the transition section facing the connecting section contacts the first sealing section, and the outer wall of the connecting section contacts the second sealing section. The connecting section is threaded into the waterproof cover and the anchor cup.

[0015] In another implementation of this disclosure, the anchor head device further includes a plurality of set screws, wherein a first set screw of a first portion of the plurality of set screws is inserted into the threaded connection between the ear plate and the anchor cup; and a second set screw of a second portion of the plurality of set screws is inserted into the threaded connection between the ear plate and the waterproof cover.

[0016] The beneficial effects of the technical solutions provided in this disclosure are:

[0017] The sealing assembly includes a waterproof cap, a baffle, and a first sealing ring. The baffle is located at the second end of the waterproof cap and connected to it. The first sealing ring is fitted over the anchor cup and sandwiched between the waterproof cap, the baffle, and the anchor cup. This allows the baffle to exert an axial force on the first sealing ring when connected to the waterproof cap, causing it to deform under pressure and thus sealing the connection between the waterproof cap and the anchor cup. Because the first sealing ring undergoes compressive deformation in its radial outward direction, when minor wear occurs, the deformation is automatically compensated by the first deformation space, resulting in a larger deformation range and extending the service life of the first sealing ring.

[0018] Furthermore, because the second sealing ring is sandwiched between the waterproof cap and the ear plate, and the second sealing ring includes a first sealing section and a second sealing section connected to each other, with the outer diameter of the first sealing section being larger than that of the second sealing section, and the end face of the first sealing section away from the second sealing section sealingly abutting against the ear plate, the first and second sealing sections can be deformed by compression when the waterproof cap is threadedly connected to the ear plate. Simultaneously, the first and second sealing sections provide a double seal at both the contact end faces of the waterproof cap and the ear plate and at the axial contact position, greatly improving the sealing effect. Moreover, since the second sealing section undergoes compressive deformation in its radial outward direction, the second deformation space can automatically compensate for the deformation of the second sealing ring when minor wear occurs, extending the service life of the second sealing ring.

[0019] It is evident that by employing a first sealing ring and a second sealing ring with deformation space, the sealing performance of the above sealing components can be greatly improved, and the service life of the sealing components can also be extended. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the anchor head device for the suspension cable of the suspension bridge provided in the embodiments of this disclosure;

[0022] Figure 2 This is a schematic diagram of the structure of the ear plate in the anchor head device provided in an embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the anchor cup in the anchor head device provided in the embodiments of this disclosure;

[0024] Figure 4 This is a schematic diagram of the structure of the waterproof cover in the anchor head device provided in the embodiments of this disclosure;

[0025] Figure 5 This is a schematic diagram of the structure of the cover in the anchor head device provided in the embodiments of this disclosure.

[0026] The symbols in the diagram represent the following meanings:

[0027] 1. Ear plate; 11. Connector; 12. Transition section; 13. Connecting section;

[0028] 2. Anchor cup; 20. Through hole; 201. Connecting hole section; 202. Contraction hole section; 203. Outlet hole section;

[0029] 3. Sealing assembly; 31. Waterproof cover; 311. First connecting section; 312. Second connecting section; 301. First sealing groove; 3011. First groove segment; 3012. Second groove segment; 302. Second sealing groove; 32. Cover; 321. Connecting ring; 322. Sleeve ring; 320. Retaining ring groove; 3201. First retaining ring groove segment; 3202. Second retaining ring groove segment; 33. First sealing ring; 34. Second sealing ring; 341. First sealing segment; 342. Second sealing segment; 35. Dustproof ring; 351. First dustproof segment; 352. Second dustproof segment;

[0030] 5. Set screw; 51. First set screw; 52. Second set screw. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0032] This disclosure provides an anchor head device for suspension bridge cables, such as... Figure 1 As shown, the anchor head assembly includes a lug plate 1, an anchor cup 2, and a sealing assembly 3. The lug plate 1 is partially threaded into the anchor cup 2.

[0033] The sealing assembly 3 includes a waterproof cover 31, a baffle 32, a first sealing ring 33, and a second sealing ring 34. The waterproof cover 31 is fitted over the connection between the anchor cup 2 and the ear plate 1, and the first end of the waterproof cover 31 is threaded to the ear plate 1. The second end of the waterproof cover 31 is fitted over the anchor cup 2. The baffle 32 is located at the second end of the waterproof cover 31 and is fitted over the anchor cup 2. The baffle 32 is connected to the waterproof cover 31. The first sealing ring 33 is fitted over the anchor cup 2 and is located in the groove defined by the waterproof cover 31, the baffle 32, and the anchor cup 2. The first sealing ring 33 is compressed and deformed in its radial outward direction.

[0034] The second sealing ring 34 is clamped between the waterproof cover 31 and the ear plate 1, and the second sealing ring 34 includes a first sealing section 341 and a second sealing section 342 connected to each other. The outer diameter of the first sealing section 341 is larger than the outer diameter of the second sealing section 342. The end face of the first sealing section 341 away from the second sealing section 342 is sealed and abuts against the ear plate 1. The end face of the first sealing section 341 away from the second sealing section 342 is parallel to the radial direction of the first sealing section 341. The second sealing section 342 has compression deformation in its own radial outward direction.

[0035] When the anchor head device for suspension bridge cables provided in this embodiment is used, since the anchor head device is provided with a lug plate 1 and an anchor cup 2, and one end of the lug plate 1 is threaded into one end of the anchor cup 2, it can be connected to the cable clamp through the lug plate 1 and to the cable strand through the anchor cup 2, so that the cable strand can be connected to the main cable.

[0036] Because the sealing assembly 3 includes a waterproof cover 31, a baffle 32, and a first sealing ring 33, with the baffle 32 located at the second end of the waterproof cover 31 and connected to it, and the first sealing ring 33 fitted over the anchor cup 2 and sandwiched between the waterproof cover 31, the baffle 32, and the anchor cup 2, the baffle 32, when connected to the waterproof cover 31, exerts an axial force on the first sealing ring 33, causing it to deform under pressure and thus sealing the connection between the waterproof cover 31 and the anchor cup 2. Since the baffle 32 is directly connected to the waterproof cover 31 and compresses and deforms the first sealing ring 33, it avoids machining threads in the waterproof cover 31, improving the processing efficiency of the waterproof cover 31. Because the first sealing ring 33 undergoes compressive deformation in its radial outward direction, when the first sealing ring 33 experiences minor wear, the deformation is automatically compensated by the first deformation space, resulting in a larger deformation range for the first sealing ring 33 and extending its service life.

[0037] Furthermore, because the second sealing ring 34 is sandwiched between the waterproof cover 31 and the ear plate 1, and the second sealing ring 34 includes a first sealing section 341 and a second sealing section 342 connected to each other, the outer diameter of the first sealing section 341 is larger than the outer diameter of the second sealing section 342. The end face of the first sealing section 341 away from the second sealing section 342 seals against the ear plate 1. In this way, when the waterproof cover 31 is threadedly connected to the ear plate 1, the first sealing section 341 and the second sealing section 342 are compressed and deformed. Thus, the first sealing section 341 and the second sealing section 342 respectively provide a double seal at the contact end face of the waterproof cover 31 and the ear plate 1 and at the contact axial position, increasing the sealing contact surface and greatly improving the sealing effect. Moreover, since the second sealing section 342 has compressive deformation in its radial outward direction, the second deformation space can automatically compensate for the deformation of the second sealing ring 34 when a small amount of wear occurs, thus extending the service life of the second sealing ring 34.

[0038] It can be seen that by using a first sealing ring 33 and a second sealing ring 34 with deformation space, the sealing performance of the sealing component 3 can be greatly improved, and the service life of the sealing component 3 can also be extended.

[0039] Figure 2 This is a schematic diagram of the structure of the ear plate in the anchor head device provided in the embodiments of this disclosure, combined with... Figure 2 Optionally, the ear plate 1 includes a connector 11, a transition section 12, and a connecting section 13 connected sequentially. The outer diameter of the transition section 12 is smaller than the outer diameter of the connector 11, and the outer diameter of the connecting section 13 is smaller than the outer diameter of the transition section 12. The end face of the transition section 12 facing the connecting section 13 contacts the first sealing section 341, and the outer wall of the connecting section 13 contacts the second sealing section 342. The connecting section 13 is threaded into the waterproof cover 31 and the anchor cup 2.

[0040] In the above implementation, the ear plate 1 is configured as a connector 11, a transition section 12, and a connecting section 13. This allows it to be connected to structures such as cable clamps via the connector 11, while the transition section 12 connects the connector 11 and the connecting section 13 together. The connecting section 13 is then threadedly connected to the anchor cup 2.

[0041] In addition, the outer diameter of the connecting section 13 is smaller than the outer diameter of the transition section 12, so that the end face of the transition section 12 connected to the connecting section 13 is exposed, so as to form a sealing contact surface that contacts the second sealing ring 34.

[0042] In this embodiment, to facilitate the arrangement of the second sealing ring 34, the section of the connecting section 13 facing the transition section 12 is a smooth rod, i.e., without external threads. This facilitates the arrangement of the second sealing section 342 of the second sealing ring 34.

[0043] In addition, the connector 11 has a U-shaped structure, which allows the cable clamp to be placed in the U-shaped space of the connector 11, and makes it easy to firmly connect the connector 11 and the cable clamp together with screws or other fasteners.

[0044] Figure 3 This is a schematic diagram of the anchor cup in the anchor head device provided in the embodiments of this disclosure, combined with... Figure 3 The anchor cup 2 has a through hole 20 inside, which includes a connecting hole section 201, a contraction hole section 202, and an outlet hole section 203 connected in sequence. The connecting hole section 201 has internal threads for threaded connection with the connecting section 13 of the ear plate 1. The contraction hole section 202 is a section with a gradually decreasing diameter from the connecting hole section 201 to the outlet hole section 203. The interior of the contraction hole section 202 is used for casting zinc-copper alloy and also for housing the cable strands, allowing the cable strands to be fixed together with the zinc-copper alloy. The reason for the varying diameter of the contraction hole section 202 is that it not only allows the zinc-copper alloy to make full contact with the cable strands but also allows the cable strands to coalesce when exiting the anchor cup 2. The outlet hole section 203 is also used for casting zinc-copper alloy and housing the cable strands, ensuring that the cable strands are also fixed together with and coalesce with the zinc-copper alloy inside the anchor cup 2 when exiting it.

[0045] See you again Figure 1 Optionally, the lip of the first sealing ring 33 is away from the cover 32 along its own axis, and the lip of the second sealing ring 34 is towards the anchor cup 2 along its own axis.

[0046] In the above implementation, the first sealing ring 33 and the second sealing ring 34 are set as lip-shaped sealing rings. This makes it easy to achieve that the first sealing ring 33 and the second sealing ring 34 have deformation space in their respective radial directions, so that the first sealing ring 33 and the second sealing ring 34 have a large amount of deformation, so that they can adaptively adjust their sealing performance.

[0047] In this embodiment, both the first sealing ring 33 and the second sealing ring 34 can be Y-shaped sealing rings with elastic sealing lips. Thus, the Y-shaped sealing rings can be axially positioned by the elastic sealing lips, allowing for simple positioning using a cover 32.

[0048] Figure 4 This is a schematic diagram of the structure of the waterproof cover in the anchor head device provided in the embodiments of this disclosure, combined with... Figure 4Optionally, the first end face of the waterproof cover 31 away from the cover 32 has a first sealing groove 301. The first sealing groove 301 includes a first groove segment 3011 and a second groove segment 3012. The inner diameter of the first groove segment 3011 is larger than that of the second groove segment 3012. One end of the first groove segment 3011 is located on the first end face. The second groove segment 3012 is located on the end of the first groove segment 3011 away from the first end face and is connected to the first groove segment 3011. The first sealing segment 341 is located inside the first groove segment 3011, and the second sealing segment 342 is located inside the second groove segment 3012.

[0049] In the above implementation, a first sealing groove 301 is provided in the waterproof cover 31, through which the second sealing ring 34 can be accommodated. Since the second sealing ring 34 is configured as a first sealing segment 341 and a second sealing segment 342, the first sealing segment 341 can be accommodated by the first groove segment 3011, and the second sealing segment 342 can be accommodated by the second groove segment 3012.

[0050] Optionally, the second end face of the waterproof cover 31 near the cover 32 has a second sealing groove 302, and the first sealing ring 33 is located in the second sealing groove 302.

[0051] The second sealing groove 302 penetrates the end face of the waterproof cover 31 facing the baffle 32. The first sealing ring 33 is located inside the second sealing groove 302.

[0052] In the above implementation, a second sealing groove 302 is provided in the waterproof cover 31, which can accommodate the first sealing ring 33, so that the first sealing ring 33 can be easily clamped between the waterproof cover 31, the cover 32 and the anchor cup 2.

[0053] Optionally, the waterproof cover 31 includes a first connecting segment 311 and a second connecting segment 312 connected to each other. The inner diameter of the first connecting segment 311 is smaller than that of the second connecting segment 312. The first connecting segment 311 is sleeved on the outside of the ear plate 1, and the end face of the first connecting segment 311 away from the second connecting segment 312 is in contact with the ear plate 1. The second connecting segment 312 is sleeved on the outside of the anchor cup 2.

[0054] The first sealing groove 301 extends through the end face of the first connecting section 311 away from the second connecting section 312, and the second sealing groove 302 extends through the end face of the second connecting section 312 away from the first connecting section 311.

[0055] In the above implementation, the waterproof cover 31 is configured as a first connecting segment 311 and a second connecting segment 312 that are connected to each other. This allows the first connecting segment 311 with a smaller inner diameter to be threaded together with the ear plate 1, while the second connecting segment 312 with a larger inner diameter contacts the anchor cup 2.

[0056] The first sealing groove 301 extends through the end face of the first connecting section 311 away from the second connecting section 312, making it an open groove. This facilitates processing and allows the end face of the second sealing ring 34 located within the first sealing groove 301 to contact the ear plate 1. Similarly, the second sealing groove 302 extends through the end face of the second connecting section 312 away from the first connecting section 311, making it an open groove, which facilitates processing and placement of the first sealing ring 33.

[0057] See you again Figure 1 Optionally, the sealing assembly 3 also includes a dust ring 35, which is located at the end of the cover 32 away from the waterproof cover 31 and is clamped between the cover 32 and the anchor cup 2.

[0058] In the above implementation, the dustproof ring 35 is used to seal between the cover 32 and the anchor cup 2 to prevent the intrusion of humid air, rainwater, dust and impurities, etc., forming an excellent dustproof effect, so as to further improve the sealing effect between the anchor cup 2 and the waterproof cover 31.

[0059] Figure 5 This is a schematic diagram of the structure of the cover in the anchor head device provided in the embodiments of this disclosure, combined with... Figure 5 Optionally, the third end face of the cover 32 away from the first sealing ring 33 has a retaining ring groove 320.

[0060] The retaining ring groove 320 includes a first retaining ring groove section 3201 and a second retaining ring groove section 3202. The inner diameter of the first retaining ring groove section 3201 is larger than the inner diameter of the second retaining ring groove section 3202. One end of the second retaining ring groove section 3202 is located on the third end face. The first retaining ring groove section 3201 is located at the end of the second retaining ring groove section 3202 that is away from the third end face and is connected to the second retaining ring groove section 3202.

[0061] The dustproof ring 35 includes a first dustproof section 351 and a second dustproof section 352 that are connected to each other. The outer diameter of the first dustproof section 351 is larger than the outer diameter of the second dustproof section 352. The first dustproof section 351 is located in the first retaining ring groove section 3201, and the second dustproof section 352 is located in the second retaining ring groove section 3202.

[0062] In the above implementation, the retaining ring groove 320 is used to house the dustproof ring 35. The retaining ring groove 320 is configured with a first retaining ring groove segment 3201 and a second retaining ring groove segment 3202 to correspond and match the first dustproof segment 351 and the second dustproof segment 352 of the dustproof ring 35. That is, the first dustproof segment 351 is accommodated by the first retaining ring groove segment 3201, and the second dustproof segment 352 is accommodated by the second retaining ring groove segment 3202.

[0063] By setting the dustproof ring 35 as a first dustproof section 351 and a second dustproof section 352, the first dustproof section 351 and the second dustproof section 352 with different outer diameters can be reliably positioned in the retaining ring groove 320 without the need to use structural components such as sealing pressure rings for positioning and installation.

[0064] In this embodiment, the dustproof ring 35 is an elastomer single-lip dustproof ring. This allows it to have good scraping and dust removal properties.

[0065] Optionally, the cover 32 includes a connecting ring 321 and a sleeve ring 322, with the connecting ring 321 fitted over the sleeve ring 322 and the connecting ring 321 located at the end of the sleeve ring 322 facing the waterproof cover 31.

[0066] The retaining ring groove 320 is located inside the sleeve ring 322, and the connecting ring 321 has multiple connecting holes spaced apart along its circumference. The connecting holes are connected to the waterproof cover 31 by fasteners.

[0067] In the above implementation, the cover 32 is configured as a connecting ring 321 and a sleeve ring 322. The connecting ring 321 can be connected to the waterproof cover 31 to seal and compress the first sealing ring 33. The sleeve ring 322 is used to fit the cover 32 over the anchor cup 2.

[0068] In this embodiment, the connecting hole is a screw hole, and a bolt or similar fastener is inserted into the screw hole to connect the connecting ring 321 and the waterproof cover 31 together.

[0069] See you again Figure 1 The anchor head device also includes a plurality of set screws 5, wherein the first set screw 51 of the first portion of the plurality of set screws 5 is respectively inserted into the threaded connection between the ear plate 1 and the anchor cup 2. The second set screw 52 of the second portion of the plurality of set screws 5 is respectively inserted into the threaded connection between the ear plate 1 and the waterproof cover 31.

[0070] The set screw 5 is used to secure the ear plate 1 and the anchor cup 2 together to prevent them from rotating relative to each other. It is also used to prevent the ear plate 1 and the waterproof cover 31 from rotating relative to each other.

[0071] The following is a brief introduction to the installation method of the anchor head device provided in the embodiments of this disclosure:

[0072] The second sealing ring 34 is fitted into the first sealing groove 301 on the end face of the waterproof cover 31, and then the ear plate 1 is screwed into the internal thread of the waterproof cover 31 through the external thread to press the second sealing ring 34, thereby achieving a seal between the ear plate 1 and the waterproof cover 31.

[0073] After screwing the anchor cup 2 and ear plate 1 together to the required length using the threaded joint, the first sealing ring 33 is installed in the second sealing groove 302 of the waterproof cover 31. The first sealing ring 33 is then tightened using bolts through the screw holes on the connecting ring 321 of the cover 32 and the screw holes on the waterproof cover 31. Then, the dustproof ring 35 is installed in the retaining ring groove 320 on the end face of the cover 32, thus achieving a seal between the anchor cup 2 and the waterproof cover 31. Finally, the ear plate 1 is secured to the waterproof cover 31 and the anchor cup 2 with set screws to prevent loosening.

[0074] Because the second sealing ring 34 has a first sealing section 341 and a second sealing section 342, it can not only be directly positioned and installed in the first sealing groove 301, but also increase the sealing contact area and improve the sealing performance. Moreover, the first sealing ring 33 and the second sealing ring 34 have a large sealing contact surface, good sealing performance, and can automatically compensate for minor wear, resulting in a long service life. Combined with the dustproof effect of the dustproof ring 35, it can effectively prevent the intrusion of humid air, rainwater, dust, and impurities, forming an excellent dustproof and sealing effect, providing good protection for the anchor head device of the sling and extending the service life of the sling.

[0075] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An anchor head device for a suspension bridge cable, characterized in that, The anchor head device includes a lug plate (1), an anchor cup (2), and a sealing assembly (3); The ear plate (1) is partially threaded into the anchor cup (2); The sealing assembly (3) includes a waterproof cover (31), a baffle (32), a first sealing ring (33), a second sealing ring (34), and a dustproof ring (35). The waterproof cover (31) is fitted over the connection between the anchor cup (2) and the ear plate (1), and the first end of the waterproof cover (31) is threaded to the ear plate (1). The second end of the waterproof cover (31) is fitted over the anchor cup (2). The baffle (32) is located at the second end of the waterproof cover (31) and is fitted over the anchor cup (2). The baffle (32) is connected to the waterproof cover (31). The first sealing ring (33) is fitted over the anchor cup (2) and is located in the groove defined by the waterproof cover (31), the baffle (32), and the anchor cup (2). The first sealing ring (33) has compression deformation in its radial outward direction. The second sealing ring (34) is sandwiched between the waterproof cover (31) and the ear plate (1), and the second sealing ring (34) includes a first sealing section (341) and a second sealing section (342) connected to each other. The outer diameter of the first sealing section (341) is larger than the outer diameter of the second sealing section (342). The end face of the first sealing section (341) away from the second sealing section (342) is sealed and abuts against the ear plate (1). The end face of the first sealing section (341) away from the second sealing section (342) is parallel to the radial direction of the first sealing section (341). The second sealing section (342) has compression deformation in its own radial outward direction. Both the first sealing ring (33) and the second sealing ring (34) are lip-shaped sealing rings. The lip of the first sealing ring (33) is away from the cover (32) along its own axis, and the lip of the second sealing ring (34) is towards the anchor cup (2) along its own axis. The dustproof ring (35) is located at the end of the cover (32) away from the waterproof cover (31) and is clamped between the cover (32) and the anchor cup (2).

2. The anchor head device according to claim 1, characterized in that, The waterproof cover (31) has a first sealing groove (301) on its first end face away from the cover (32). The first sealing groove (301) includes a first groove segment (3011) and a second groove segment (3012). The inner diameter of the first groove segment (3011) is larger than that of the second groove segment (3012). One end of the first groove segment (3011) is located on the first end face. The second groove segment (3012) is located at the end of the first groove segment (3011) away from the first end face and is connected to the first groove segment (3011). The first sealing segment (341) is located inside the first groove segment (3011), and the second sealing segment (342) is located inside the second groove segment (3012).

3. The anchor head device according to claim 2, characterized in that, The second end face of the waterproof cover (31) near the cover (32) has a second sealing groove (302), and the first sealing ring (33) is located in the second sealing groove (302).

4. The anchor head device according to claim 3, characterized in that, The waterproof cover (31) includes a first connecting section (311) and a second connecting section (312) that are connected to each other. The inner diameter of the first connecting section (311) is smaller than that of the second connecting section (312). The first connecting section (311) is sleeved on the ear plate (1), and the end face of the first connecting section (311) away from the second connecting section (312) is in contact with the ear plate (1). The second connecting section (312) is sleeved on the anchor cup (2).

5. The anchor head device according to claim 1, characterized in that, The third end face of the cover (32) away from the first sealing ring (33) has a retaining ring groove (320). The retaining ring groove (320) includes a first retaining ring groove segment (3201) and a second retaining ring groove segment (3202). The inner diameter of the first retaining ring groove segment (3201) is larger than the inner diameter of the second retaining ring groove segment (3202). One end of the second retaining ring groove segment (3202) is located on the third end face. The first retaining ring groove segment (3201) is located at the end of the second retaining ring groove segment (3202) away from the third end face and is connected to the second retaining ring groove segment (3202). The dustproof ring (35) includes a first dustproof section (351) and a second dustproof section (352) connected to each other. The outer diameter of the first dustproof section (351) is larger than the outer diameter of the second dustproof section (352). The first dustproof section (351) is located in the first retaining ring groove section (3201), and the second dustproof section (352) is located in the second retaining ring groove section (3202).

6. The anchor head device according to claim 5, characterized in that, The cover (32) includes a connecting ring (321) and a sleeve ring (322), the connecting ring (321) is sleeved on the outside of the sleeve ring (322), and the connecting ring (321) is located at the end of the sleeve ring (322) facing the waterproof cover (31); The retaining ring groove (320) is located inside the sleeve ring (322), and the connecting ring (321) is provided with a plurality of connecting holes at intervals along its circumference. The connecting holes are connected to the waterproof cover (31) by fasteners.

7. The anchor head device according to any one of claims 1-6, characterized in that, The ear plate (1) includes a connector (11), a transition section (12) and a connecting section (13) connected together in sequence. The outer diameter of the transition section (12) is smaller than the outer diameter of the connector (11), and the outer diameter of the connecting section (13) is smaller than the outer diameter of the transition section (12). The end face of the transition section (12) facing the connecting section (13) contacts the first sealing section (341), and the outer wall of the connecting section (13) contacts the second sealing section (342). The connecting section (13) is threaded into the waterproof cover (31) and the anchor cup (2).

8. The anchor head device according to any one of claims 1-6, characterized in that, The anchor head device also includes a plurality of set screws (5), wherein the first set screw (51) of the first portion of the plurality of set screws (5) is inserted into the threaded connection between the ear plate (1) and the anchor cup (2); The second set screw (52) of the second part of the plurality of set screws (5) is inserted into the threaded connection between the ear plate (1) and the waterproof cover (31).

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