CN117306390A - Anchor head device of suspension bridge sling - Google Patents

Abstract

The present disclosure provides an anchor head device for suspension bridge slings, which belongs to the field of bridge engineering. The anchor head device comprises an ear plate, an anchor cup and a sealing assembly; the lug plate part is in threaded connection with the anchor cup; the sealing assembly comprises a waterproof cover, a blocking cover, a first sealing ring and a second sealing ring, wherein the waterproof cover is sleeved outside the joint of the anchor cup and the lug plate, the first end of the waterproof cover is in threaded connection with the lug plate, the second end of the waterproof cover is sleeved outside the anchor cup, the blocking cover is positioned at the second end of the waterproof cover and sleeved outside the anchor cup, the blocking cover is connected with the waterproof cover, the first sealing ring is sleeved outside the anchor cup and is positioned in grooves defined by the waterproof cover, the blocking cover and the anchor cup, and the first sealing ring is in compression deformation in the radial outward direction of the first sealing ring; the second sealing ring is clamped between the waterproof cover and the lug plate. The present disclosure may improve the tightness of suspension bridge slings.

Description

Anchor head device of suspension bridge sling

Technical Field

The disclosure belongs to the field of bridge engineering, and in particular relates to an anchor head device of a suspension bridge sling.

Background

The main cable of the suspension bridge carries out suspension support on the bridge through the sling. The suspension bridge sling comprises an upper end anchor head, a strand and a lower end anchor head. The upper anchor head is connected with the cable clamp, and the lower anchor head is connected with the bridge. The upper end anchor head and the lower end anchor head can have the same structure. Here, the anchor head hereinafter will be described by taking an upper end anchor head as an example. The anchor heads comprise ear plates and anchor cups. Zinc-copper alloy is poured into the anchor cup and fixedly connected with the cable strand. The otic placode is including the linkage segment that links together and connector, and the connector is connected with the cable clamp. One end of the connecting section, which is far away from the connector, is inserted into the anchor cup in a threaded manner. In order to adjust the overall length of the anchor head, the connecting section is not fully inserted into the anchor cup but a certain reserved section is reserved. Because the sling is used in the open air environment, in order to prevent the corrosion of the threaded connection between the anchor cup and the connecting section of the lug plate and zinc-copper alloy cast in the anchor cup, the connection between the anchor cup and the lug plate must be well sealed by the sealing component, so as to avoid the invasion of moist air, rainwater, dust, impurities and the like.

In the related art, the sealing assembly comprises a waterproof cover, two O-shaped sealing rings and a sealing compression ring. The waterproof cover is sleeved outside the reserved section of the earplate and the anchor cup, the waterproof cover is in threaded connection with the unconnected section of the earplate, and the end face of the waterproof cover is in contact with the connector of the earplate. The first O-shaped sealing ring is clamped between the end face of the waterproof cover and the connector of the lug plate. The second O-shaped sealing ring and the sealing pressing ring are sequentially clamped between the other end of the waterproof cover and the outer wall of the anchor cup along the axial direction of the anchor cup, and the sealing pressing ring is positioned on one side, away from the lug plate, of the second O-shaped sealing ring. The sealing compression ring is in threaded connection with the waterproof cover. Thus, the first O-shaped sealing ring is tightly pressed by screwing the waterproof cover and the lug plate, and the second O-shaped sealing ring is tightly pressed by screwing the sealing pressing ring and the waterproof cover, so that sealing can be realized.

However, since the O-ring is a small-section seal ring, the sealing property is poor, and the O-ring is easily broken, resulting in a short service life. Meanwhile, the sealing structure is complex, the O-shaped sealing ring is required to be accommodated by processing the sealing groove on the outer wall of the anchor cup, and the processing and assembling cost is high.

Disclosure of Invention

The embodiment of the disclosure provides an anchor head device of a suspension bridge sling, which can improve the tightness of the suspension bridge sling. The technical scheme is as follows:

the embodiment of the disclosure provides an anchor head device of a suspension bridge sling, which comprises an ear plate, an anchor cup and a sealing assembly; the lug plate part is in threaded connection with the anchor cup; the sealing assembly comprises a waterproof cover, a blocking cover, a first sealing ring and a second sealing ring, wherein the waterproof cover is sleeved outside the joint of the anchor cup and the lug plate, the first end of the waterproof cover is in threaded connection with the lug plate, the second end of the waterproof cover is sleeved outside the anchor cup, the blocking cover is positioned at the second end of the waterproof cover and sleeved outside the anchor cup, the blocking cover is connected with the waterproof cover, the first sealing ring is sleeved outside the anchor cup and is positioned in grooves defined by the waterproof cover, the blocking cover and the anchor cup, and the first sealing ring is in compression deformation in the radial outward direction of the first sealing ring; the second sealing ring is clamped between the waterproof cover and the lug plate, the second sealing ring comprises a first sealing section and a second sealing section which are connected with each other, the outer diameter of the first sealing section is larger than that of the second sealing section, one end face of the first sealing section, far away from the second sealing section, is in sealing butt joint with the lug plate, one end face of the first sealing section, far away from the second sealing section, is parallel to the radial direction of the first sealing section, and compression deformation exists on the second sealing section in the radial outward direction of the second sealing section.

In yet another implementation of the present disclosure, the first seal ring and the second seal ring are lip seals; the lip of the first sealing ring is far away from the blocking cover along the axis direction of the first sealing ring, and the lip of the second sealing ring faces the anchor cup along the axis direction of the second sealing ring.

In yet another implementation of the present disclosure, the first end of the waterproof cover away from the cover has a first sealing groove, the first sealing groove includes a first groove section and a second groove section, the inner diameter of the first groove section is greater than that of the second groove section, one end of the first groove section is located at the first end face, the second groove section is located at one end of the first groove section away from the first end face and connected with the first groove section, the first sealing section is located in the first groove section, and the second sealing section is located in the second groove section.

In yet another implementation of the present disclosure, a second end surface of the waterproof cover, which is close to the blocking cover, has a second sealing groove, and the first sealing ring is located in the second sealing groove.

In yet another implementation of the present disclosure, the waterproof cover includes a first connection section and a second connection section that are connected to each other, an inner diameter of the first connection section is smaller than that of the second connection section, the first connection section is sleeved outside the ear plate, and an end surface of the first connection section away from the second connection section is contacted with the ear plate, and the second connection section is sleeved outside the anchor cup.

In yet another implementation of the present disclosure, the seal assembly further includes a dust collar located at an end of the shield cap remote from the waterproof cap and sandwiched between the shield cap and the anchor cup.

In yet another implementation of the present disclosure, a retainer ring groove is provided in the end surface of the cover remote from the second end surface; the check ring groove comprises a first check ring groove section and a second check ring groove section, the inner diameter of the first check ring groove section is larger than that of the second check ring groove section, one end of the second check ring groove section is positioned on the second end face, and the first check ring groove section is positioned at one end, far away from the second end face, of the second check ring groove section and is connected with the second check ring groove section; the dustproof ring comprises a dustproof first section and a dustproof second section which are connected with each other, the outer diameter of the dustproof first section is larger than that of the dustproof second section, the dustproof first section is located in the first check ring groove section, and the dustproof second section is located in the second check ring groove section.

In yet another implementation of the present disclosure, the blocking cover includes a connection ring and a sleeve ring, the connection ring is sleeved outside the sleeve ring, and the connection ring is located at one end of the sleeve ring facing the waterproof cover; the retaining ring slot is located in the sleeve ring, the connecting ring is provided with a plurality of connecting holes along the circumferential direction of the connecting ring at intervals, and the connecting holes are connected with the waterproof cover through fasteners.

In yet another implementation of the present disclosure, the ear plate includes a connector, a transition section, and a connection section connected together in sequence, the transition section having an outer diameter smaller than an outer diameter of the connector, the connection section having an outer diameter smaller than an outer diameter of the transition section, an end surface of the transition section facing the connection section being in contact with the first seal section, an outer wall of the connection section being in contact with the second seal section; the connecting section is in threaded connection with the waterproof cover and the anchor cup.

In yet another implementation of the present disclosure, the anchor head device further comprises a plurality of set screws, a first portion of the set screws of the plurality of set screws being inserted at a threaded connection of the ear plate and the anchor cup; and the set screw of the second part of the set screws is inserted into the threaded connection part of the lug plate and the waterproof cover.

The technical scheme provided by the embodiment of the disclosure has the beneficial effects that:

because be equipped with waterproof cover, fender lid and first sealing washer in the seal assembly, and keep off the second end that the lid is located waterproof cover, and link together with waterproof cover, simultaneously, first sealing ring snare is outside the anchor cup, and presss from both sides dress waterproof cover keep off the lid and between the anchor cup, alright so when being connected with waterproof cover through keeping off the lid, produce axial atress to first sealing washer, make it pressurized deformation, and seal between waterproof cover and the anchor cup. Because the first sealing ring has compression deformation in the radial outward direction of the first sealing ring, when the first sealing ring is worn in a small amount, the deformation of the first sealing ring is automatically compensated through the first deformation space, so that the first sealing ring has a larger deformation range, and the service life of the first sealing ring is prolonged.

In addition, because the second sealing ring is clamped between the waterproof cover and the lug plate, the second sealing ring comprises a first sealing section and a second sealing section which are connected with each other, the outer diameter of the first sealing section is larger than that of the second sealing section, one end face of the first sealing section, which is far away from the second sealing section, is in sealing butt joint with the lug plate, so that the first sealing section and the second sealing section can be extruded to deform when the waterproof cover is in threaded connection with the lug plate, and meanwhile, the sealing effect is greatly improved by carrying out double-layer sealing on the end face of the waterproof cover, which is in contact with the lug plate, and the axial position of the contact with the lug plate through the first sealing section and the second sealing section. And because the second sealing section has compression deformation in the radial outward direction of the second sealing section, the deformation of the second sealing ring can be automatically compensated through the second deformation space when a small amount of abrasion occurs to the second sealing ring, and the service life of the second sealing ring is prolonged.

Therefore, the sealing assembly can greatly improve the sealing performance by adopting the first sealing ring and the second sealing ring which have deformation spaces, and the service life of the sealing assembly can be prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of an anchor head device of a suspension bridge sling provided by an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a middle ear plate of an anchor head device provided in an embodiment of the present disclosure;

fig. 3 is a schematic structural view of an anchor cup in an anchor head device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of a waterproof cover in an anchor head device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a blocking cover in an anchor head device according to an embodiment of the present disclosure.

The symbols in the drawings are as follows:

1. ear plates; 11. a connector; 12. a transition section; 13. a connection section;

2. an anchor cup; 20. a through hole; 201. a connecting hole section; 202. a shrink hole section; 203. an outlet aperture section;

3. a seal assembly; 31. a waterproof cover; 311. a first connection section; 312. a second connection section; 301. a first seal groove; 3011. a first trough section; 3012. a second trough section; 302. a second seal groove; 32. a blocking cover; 321. a connecting ring; 322. a sleeve joint ring; 320. a retainer ring groove; 3201. a first retainer ring groove section; 3202. a second retainer ring groove section; 33. a first seal ring; 34. a second seal ring; 341. a first seal segment; 342. a second seal section; 35. a dust ring; 351. a dust-proof first section; 352. a dust-proof second section;

5. and (5) setting the screw.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

The disclosed embodiments provide an anchor head device of a suspension bridge sling, as shown in fig. 1, comprising an ear plate 1, an anchor cup 2 and a sealing assembly 3. The ear plate 1 is partially inserted into the anchor cup 2 in a threaded manner.

The sealing assembly 3 comprises a waterproof cover 31, a blocking cover 32, a first sealing ring 33 and a second sealing ring 34, wherein the waterproof cover 31 is sleeved outside the joint of the anchor cup 2 and the ear plate 1, the first end of the waterproof cover 31 is in threaded connection with the ear plate 1, the second end of the waterproof cover 31 is sleeved outside the anchor cup 2, the blocking cover 32 is positioned at the second end of the waterproof cover 31 and sleeved outside the anchor cup 2, the blocking cover 32 is connected with the waterproof cover 31, the first sealing ring 33 is sleeved outside the anchor cup 2 and is positioned in a groove defined by the waterproof cover 31, the blocking cover 32 and the anchor cup 2, and the first sealing ring 33 is in compression deformation in the radial outward direction of the first sealing ring 33.

The second sealing ring 34 is clamped between the waterproof cover 31 and the ear plate 1, the second sealing ring 34 comprises a first sealing section 341 and a second sealing section 342 which are connected with each other, the outer diameter of the first sealing section 341 is larger than that of the second sealing section 342, one end face, away from the second sealing section 342, of the first sealing section 341 is in sealing abutting connection with the ear plate 1, one end face, away from the second sealing section 342, of the first sealing section 341 is parallel to the radial direction of the first sealing section 341, and the second sealing section 342 is in compression deformation in the radial outward direction.

When the anchor head device of the suspension bridge sling is used, as the lug plate 1 and the anchor cup 2 are arranged in the anchor head device, one end of the lug plate 1 is inserted into one end of the anchor cup 2 in a threaded manner, the anchor head device can be connected with a cable clamp through the lug plate 1 and simultaneously connected with a cable through the anchor cup 2, and thus the cable is connected with a main cable.

Because the waterproof cover 31, the blocking cover 32 and the first sealing ring 33 are arranged in the sealing assembly 3, the blocking cover 32 is positioned at the second end of the waterproof cover 31 and is connected with the waterproof cover 31, meanwhile, the first sealing ring 33 is sleeved outside the anchor cup 2 and is clamped among the waterproof cover 31, the blocking cover 32 and the anchor cup 2, so that when the blocking cover 32 is connected with the waterproof cover 31, the first sealing ring 33 is stressed in the axial direction, so that the first sealing ring 33 is deformed under compression, and the waterproof cover 31 and the anchor cup 2 are sealed. Since the blocking cover 32 is directly connected with the waterproof cover 31 to press the first sealing ring 33 to deform and seal the first sealing ring, the processing of threads in the waterproof cover 31 can be avoided, and the processing efficiency of the waterproof cover 31 can be improved. Because the first sealing ring 33 has compression deformation in the radial outward direction, when the first sealing ring 33 is worn slightly, the deformation of the first sealing ring 33 is automatically compensated through the first deformation space, so that the first sealing ring 33 has a larger deformation range, and the service life of the first sealing ring 33 is prolonged.

In addition, because the second sealing ring 34 is clamped between the waterproof cover 31 and the ear plate 1, and the second sealing ring 34 comprises a first sealing section 341 and a second sealing section 342 which are connected with each other, the outer diameter of the first sealing section 341 is larger than that of the second sealing section 342, and one end face of the first sealing section 341, which is far away from the second sealing section 342, is in sealing butt joint with the ear plate 1, so that the first sealing section 341 and the second sealing section 342 can be extruded to deform when the waterproof cover 31 is in threaded connection with the ear plate 1, and therefore double-layer sealing can be carried out on the contact end face and the contact axial position of the waterproof cover 31 and the ear plate 1 through the first sealing section 341 and the second sealing section 342 respectively, the sealing contact face is enlarged, and the sealing effect is greatly improved. Moreover, since the second seal segment 342 has compression deformation in the radial outward direction, when the second seal ring 34 is worn slightly, the deformation of the second seal ring can be automatically compensated through the second deformation space, so that the service life of the second seal ring 34 is prolonged.

It can be seen that the above sealing assembly 3 can greatly improve the sealing performance by adopting the first sealing ring 33 and the second sealing ring 34 having the deformation space, and can also prolong the service life of the sealing assembly 3.

Fig. 2 is a schematic structural diagram of a middle ear plate of an anchor head device according to an embodiment of the present disclosure, and referring to fig. 2, optionally, the ear plate 1 includes a connector 11, a transition section 12 and a connection section 13 connected together in sequence, the outer diameter of the transition section 12 is smaller than the outer diameter of the connector 11, the outer diameter of the connection section 13 is smaller than the outer diameter of the transition section 12, an end surface of the transition section 12 facing the connection section 13 is in contact with a first sealing section 341, and an outer wall of the connection section 13 is in contact with a second sealing section 342. The connecting section 13 is screwed into the waterproof cover 31 and the anchor cup 2.

In the above-described implementation, the ear plate 1 is provided as the connection head 11, the transition section 12 and the connection section 13, so that the connection head 11 and the connection section 13 can be connected together by the connection head 11 and the cable clamp or the like, while the connection head 11 and the connection section 13 are connected together by the transition section 12. And is screwed with the anchor cup 2 by means of the connecting section 13.

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 at the end connected to the connecting section 13 can be exposed to form a sealing contact surface with the second sealing ring 34.

In this embodiment, to facilitate the arrangement of the second seal ring 34, a section of the connecting section 13 facing the transition section 12 is a polished rod, i.e. no external thread is arranged. This may facilitate placement of the second seal segment 342 of the second seal 34.

In addition, the connector 11 is of a U-shaped structure, so that a cable clamp can be arranged in a U-shaped space of the U-shaped structure of the connector 11, and further the connector 11 and the cable clamp are firmly connected together through fasteners such as screws.

Fig. 3 is a schematic structural diagram of an anchor cup in the anchor head device according to the embodiment of the present disclosure, and in combination with fig. 3, the interior of the anchor cup 2 is provided with a through hole 20, and the through hole 20 includes a connecting hole section 201, a shrinkage hole section 202 and an outlet hole section 203 which are sequentially connected. Wherein the connecting hole section 201 is provided with an internal thread for threaded connection with the connecting section 13 of the ear plate 1. The shrinkage hole section 202 is a hole section with gradually smaller pore diameter from the connecting hole section 201 to the outlet hole section 203, and the inside of the shrinkage hole section 202 is used for pouring zinc-copper alloy and simultaneously is also used for accommodating strands, so that the strands are fixedly connected with the zinc-copper alloy. The shrinkage cavity section 202 is configured with varying pore sizes so that not only can the zinc-copper alloy solid be in sufficient contact with the strands, but also the strands can be agglomerated together as they come out of the anchor cup 2. The outlet hole section 203 is also used for casting the zinc-copper alloy and accommodating the strands so that the strands can be fixedly connected with the zinc-copper alloy in the anchor cup 2 and coagulated together when coming out of the anchor cup 2.

Referring again to fig. 1, optionally, the lip of the first seal ring 33 is remote from the retaining cap 32 along its own axis and the lip of the second seal ring 34 is directed towards the anchor cup 2 along its own axis.

In the above implementation manner, the first seal ring 33 and the second seal ring 34 are configured as lip seal rings, so that the first seal ring 33 and the second seal ring 34 can have deformation spaces in the radial direction, so that the first seal ring 33 and the second seal ring 34 have larger deformation amounts, and the sealing performance of the seal ring can be adjusted in a self-adaptive manner.

In this embodiment, the first seal ring 33 and the second seal ring 34 may be Y-shaped seal rings with elastic seal lips. Thus, the Y-shaped sealing ring can be axially positioned by the elastic sealing lip, and therefore, the limit can be carried out in a simple blocking cover 32 mode.

Fig. 4 is a schematic structural diagram of a waterproof cover in an anchor head device according to an embodiment of the disclosure, and referring to fig. 4, optionally, a first end surface of the waterproof cover 31 far away from the blocking cover 32 is provided with a first sealing groove 301, the first sealing groove 301 includes a first groove section 3011 and a second groove section 3012, an inner diameter of the first groove section 3011 is greater than that of the second groove section 3012, one end of the first groove section 3011 is located at the first end surface, the second groove section 3012 is located at one end of the first groove section 3011 far away from the first end surface and is connected to the first groove section 3011, the first sealing section 341 is located in the first groove section 3011, and the second sealing section 342 is located in the second groove section 3012.

In the above-described implementation, the first sealing groove 301 is provided in the waterproof cover 31, and the second sealing ring 34 may be accommodated by the first sealing groove 301. Since the second seal ring 34 is provided as the first seal segment 341 and the second seal segment 342, the first seal segment 341 can be accommodated by the first groove segment 3011, and the second seal segment 342 can be accommodated by the second groove segment 3012.

Optionally, a second end surface of the waterproof cover 31 adjacent to the blocking cover 32 has a second sealing groove 302, and the first sealing ring 33 is located in the second sealing groove 302.

The second seal groove 302 penetrates the end face of the waterproof cover 31 facing the end of the barrier cover 32. The first seal ring 33 is located within the second seal groove 302.

In the above implementation manner, the second sealing groove 302 is provided in the waterproof cover 31, and the first sealing ring 33 can be accommodated through the second sealing groove 302, so that the first sealing ring 33 can be conveniently clamped among the waterproof cover 31, the blocking cover 32 and the anchor cup 2.

Optionally, the waterproof cover 31 includes a first connection section 311 and a second connection section 312 that are connected to each other, an inner diameter of the first connection section 311 is smaller than that of the second connection section 312, the first connection section 311 is sleeved outside the ear plate 1, and an end surface of the first connection section 311 away from the second connection section 312 contacts with the ear plate 1, and the second connection section 312 is sleeved outside the anchor cup 2.

The first sealing groove 301 penetrates through the end face of the first connection section 311 away from the second connection section 312, and the second sealing groove 302 penetrates through the end face of the second connection section 312 away from the first connection section 311.

In the above-described implementation, the waterproof cover 31 is provided as the first connection section 311 and the second connection section 312 connected to each other, so that it can be screwed together with the ear plate 1 through the first connection section 311 having a smaller inner diameter, and at the same time, be brought into contact with the anchor cup 2 through the second connection section 312 having a larger inner diameter.

The first sealing groove 301 penetrates through the end face of the first connecting section 311 away from the second connecting section 312, so that the first sealing groove 301 is an open groove, on the one hand, processing is convenient, and on the other hand, the end face of the second sealing ring 34 positioned in the first sealing groove 301 can be in contact with the ear plate 1. Likewise, the second sealing groove 302 penetrates through the end surface of the second connecting section 312 away from the first connecting section 311, so that the second sealing groove 302 is an open groove, and the first sealing ring 33 is convenient to process and place.

Referring again to fig. 1, the seal assembly 3 optionally further comprises a dust collar 35, the dust collar 35 being located at the end of the flap 32 remote from the waterproof cover 31 and being sandwiched between the flap 32 and the anchor cup 2.

In the above-described implementation, the dust ring 35 is used to seal between the shield cover 32 and the anchor cup 2, prevent invasion of moist air, rainwater, dust, impurities, etc., and form an excellent dust-proof effect, so as to further improve the sealing effect between the anchor cup 2 and the waterproof cover 31.

Fig. 5 is a schematic structural view of a retaining cap in an anchor head device according to an embodiment of the present disclosure, and in conjunction with fig. 5, optionally, a third end surface of the retaining cap 32, far away from the first sealing ring 33, has a retaining ring groove 320.

The retainer groove 320 includes a first retainer groove segment 3201 and a second retainer groove segment 3202, the inner diameter of the first retainer groove segment 3201 is larger than the inner diameter of the second retainer groove segment 3202, one end of the second retainer groove segment 3202 is located at a third end face, and the first retainer groove segment 3201 is located at one end, far away from the third end face, of the second retainer groove segment 3202 and is connected with the second retainer groove segment 3202.

The dust collar 35 includes a dust-proof first section 351 and a dust-proof second section 352 that are connected to each other, the dust-proof first section 351 having an outer diameter greater than the outer diameter of the dust-proof second section 352, the dust-proof first section 351 being located in the first collar channel section 3201, the dust-proof second section 352 being located in the second collar channel section 3202.

In the above-described implementation, the retainer ring groove 320 is used to receive the dust ring 35. The retainer grooves 320 are correspondingly configured as the first retainer groove section 3201 and the second retainer groove section 3202 so as to correspondingly match the dustproof first section 351 and the dustproof second section 352 of the dustproof ring 35, that is, the dustproof first section 351 is accommodated by the first retainer groove section 3201, and the dustproof second section 352 is accommodated by the second retainer groove section 3202.

And the dustproof ring 35 is provided with the dustproof first section 351 and the dustproof second section 352, so that the dustproof first section 351 and the dustproof second section 352 with different outer diameters can be reliably positioned in the check ring groove 320 without positioning and mounting by using a sealing compression ring and other structural members.

In this embodiment, the dust ring 35 is an elastomeric single lip dust ring. Thus, the dust remover has good scraping and dust removing effects.

Optionally, the blocking cover 32 includes a connection ring 321 and a sleeve ring 322, the connection ring 321 is sleeved outside the sleeve ring 322, and the connection ring 321 is located at one end of the sleeve ring 322 facing the waterproof cover 31.

The retainer ring groove 320 is located in the sleeve ring 322, and the connecting ring 321 is provided with a plurality of connecting holes at intervals along the circumferential direction, and the connecting holes are connected with the waterproof cover 31 through fasteners.

In the above implementation manner, the blocking cover 32 is provided with the connecting ring 321 and the sleeve ring 322, so that the blocking cover can be connected with the waterproof cover 31 through the connecting ring 321, and the first sealing ring 33 is sealed and pressed. And the sleeve ring 322 is used for sleeving the baffle cover 32 outside the anchor cup 2.

In the present embodiment, the connection holes are screw holes into which bolts or the like are inserted to connect the connection ring 321 and the waterproof cover 31 together by fasteners such as bolts.

Referring again to fig. 1, the anchor head device further comprises a plurality of set screws 5, wherein a first set screw 51 of the plurality of set screws 5 is inserted into the threaded connection of the ear plate 1 and the anchor cup 2, respectively. The second set screw 52 of the plurality of set screws 5 is inserted into the threaded connection of the ear plate 1 and the waterproof cover 31, respectively.

The set screw 5 is used to secure the ear plate 1 and the anchor cup 2 together against rotation. But also to prevent mutual rotation between the ear plate 1 and the waterproof cover 31.

The following briefly describes the installation manner of the anchor head device provided in the embodiments of the present disclosure:

the second sealing ring 34 is assembled in the first sealing groove 301 on the end face of the waterproof cover 31, and then the ear plate 1 is screwed to the pressing second sealing ring 34 through the external thread and the internal thread of the waterproof cover 31, so that the sealing between the ear plate 1 and the waterproof cover 31 is realized.

After the anchor cup 2 and the ear plate 1 are screwed to the length required by design through the screw pair, a first sealing ring 33 is arranged in the second sealing groove 302 of the waterproof cover 31, the first sealing ring 33 is pressed by bolts through screw holes on the connecting ring 321 of the baffle cover 32 and screw holes on the waterproof cover 31, then the dustproof ring 35 is arranged in the retainer ring groove 320 on the end face of the baffle cover 32, sealing between the anchor cup 2 and the waterproof cover 31 is achieved, and finally locking positioning between the ear plate 1 and the waterproof cover 31 and between the anchor cup 2 are carried out through set screws.

Since the second seal ring 34 has the first seal segment 341 and the second seal segment 342, not only can the second seal ring be directly positioned and installed in the first seal groove 301, but also the seal contact area can be increased, and the sealing performance can be improved. Moreover, the sealing contact surface of the first sealing ring 33 and the second sealing ring 34 is large, the sealing performance is good, the sealing contact surface can be automatically compensated after a small amount of abrasion, the service life is long, the invasion of moist air, rainwater, dust, impurities and the like can be well avoided by adding the dustproof effect of the dustproof ring 35, the excellent dustproof and sealing effects are formed, the good protection is formed for the anchor head device of the sling, and the service life of the sling is prolonged.

The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and principles of the disclosure.

Claims (10)

1. An anchor head device of a suspension bridge sling, characterized in that the anchor head device comprises an ear plate (1), an anchor cup (2) and a sealing assembly (3);

the lug plate (1) is partially inserted into the anchor cup (2) in a threaded manner;

the sealing assembly (3) comprises a waterproof cover (31), a blocking cover (32), a first sealing ring (33) and a second sealing ring (34), wherein the waterproof cover (31) is sleeved outside the joint of the anchor cup (2) and the lug plate (1), the first end of the waterproof cover (31) is in threaded connection with the lug plate (1), the second end of the waterproof cover (31) is sleeved outside the anchor cup (2), the blocking cover (32) is positioned at the second end of the waterproof cover (31) and sleeved outside the anchor cup (2), the blocking cover (32) is connected with the waterproof cover (31), the first sealing ring (33) is sleeved outside the anchor cup (2) and is positioned in a groove defined by the waterproof cover (31), the blocking cover (32) and the anchor cup (2), and the first sealing ring (33) is in compression deformation in the radial outward direction of the first sealing ring (33) per se;

the waterproof cover is characterized in that the second sealing ring (34) is clamped between the waterproof cover (31) and the lug plate (1), the second sealing ring (34) comprises a first sealing section (341) and a second sealing section (342) which are connected with each other, the outer diameter of the first sealing section (341) is larger than that of the second sealing section (342), one end face of the first sealing section (341) away from the second sealing section (342) is in sealing butt joint with the lug plate (1), one 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), and compression deformation exists on the second sealing section (342) in the radial outward direction of the second sealing section (342).

2. Anchor head device according to claim 1, characterized in that the first sealing ring (33) and the second sealing ring (34) are lip seals;

the lip of the first sealing ring (33) is far away from the baffle cover (32) along the axis direction of the first sealing ring, and the lip of the second sealing ring (34) faces the anchor cup (2) along the axis direction of the second sealing ring.

3. The anchor head device according to claim 1, characterized in that a first end face of the waterproof cover (31) far away from the blocking cover (32) is provided with a first sealing groove (301), the first sealing groove (301) comprises a first groove section (3011) and a second groove section (3012), the inner diameter of the first groove section (3011) is larger than that of the second groove section (3012), one end of the first groove section (3011) is located at the first end face, the second groove section (3012) is located at one end of the first groove section (3011) far away from the first end face and is connected with the first groove section (3011), the first sealing section (341) is located in the first groove section (3011), and the second sealing section (342) is located in the second groove section (3012).

4. An anchor head device according to claim 3, characterized in that the second end face of the waterproof cover (31) adjacent to the blocking cover (32) has a second sealing groove (302), the first sealing ring (33) being located in the second sealing groove (302).

5. The anchor head device according to claim 4, wherein the waterproof cover (31) comprises a first connecting section (311) and a second connecting section (312) which are connected with 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 outside the ear plate (1), and the end face, away from the second connecting section (312), of the first connecting section (311) is contacted with the ear plate (1), and the second connecting section (312) is sleeved outside the anchor cup (2).

6. Anchor head device according to claim 1, characterized in that the sealing assembly (3) further comprises a dust ring (35), which dust ring (35) is located at the end of the shield cover (32) remote from the waterproof cover (31) and is clamped between the shield cover (32) and the anchor cup (2).

7. Anchor head device according to claim 6, characterized in that a third end of the blocking cap (32) remote from the first sealing ring (33) has a blocking ring groove (320);

the check ring groove (320) comprises a first check ring groove section (3201) and a second check ring groove section (3202), wherein the inner diameter of the first check ring groove section (3201) is larger than that of the second check ring groove section (3202), one end of the second check ring groove section (3202) is positioned on the third end face, and the first check ring groove section (3201) is positioned at one end, far away from the third end face, of the second check ring groove section (3202) and is connected with the second check ring groove section (3202);

the dustproof ring (35) comprises a dustproof first section (351) and a dustproof second section (352) which are connected with each other, the outer diameter of the dustproof first section (351) is larger than that of the dustproof second section (352), the dustproof first section (351) is located in the first check ring groove section (3201), and the dustproof second section (352) is located in the second check ring groove section (3202).

8. Anchor head device according to claim 7, characterized in that the blocking cover (32) comprises a connecting ring (321) and a sleeving ring (322), the connecting ring (321) is sleeved outside the sleeving ring (322), and the connecting ring (321) is positioned at one end of the sleeving ring (322) facing the waterproof cover (31);

the retainer ring groove (320) is located in the sleeve joint ring (322), a plurality of connecting holes are formed in the connecting ring (321) at intervals along the circumferential direction of the connecting ring, and the connecting holes are connected with the waterproof cover (31) through fasteners.

9. Anchor head device according to any one of claims 1-8, characterized in that the ear plate (1) comprises a joint head (11), a transition section (12) and a connecting section (13) connected together in sequence, the outer diameter of the transition section (12) being smaller than the outer diameter of the joint head (11), the outer diameter of the connecting section (13) being smaller than the outer diameter of the transition section (12), the end face of the transition section (12) facing the connecting section (13) being in contact with the first sealing section (341), the outer wall of the connecting section (13) being in contact with the second sealing section (342);

the connecting section (13) is in threaded connection with the waterproof cover (31) and the anchor cup (2).

10. Anchor head device according to any one of claims 1-8, further comprising a plurality of set screws (5), a first part of the set screws (51) of the plurality of set screws (5) being inserted at the threaded connection of the ear plate (1) and the anchor cup (2);

the set screw (52) of the second part of the set screws (5) is inserted into the threaded connection part of the lug plate (1) and the waterproof cover (31).