A sling anchor cup protection structure with fire resistance and shock absorption functions

Abstract

The present invention discloses a sling anchor cup protective structure with fire resistance and shock absorption functions, wherein the sealing cover body is a cylindrical body with openings at both ends, and is sealed and wrapped and fixed on the outside of the sling anchor cup; the inner surface of the sealing cover body has a sealing fire resistance layer; an isolation gap is formed between the sealing cover body and the sling anchor cup; the inner support sleeve is tightly fitted on the outer wall of the sling anchor cup; the shock absorbing bracket is connected to the outer wall of the inner support sleeve, and is tightly pressed between the sealing cover body and the inner support sleeve, the shock absorbing bracket can produce extrusion deformation, and an energy dissipation spring is provided on the shock absorbing bracket. The present invention arranges the sealing cover body on the outside of the sling anchor cup to achieve isolation and fire prevention, transmits vibration to the energy dissipation spring through the deformation of the shock absorbing bracket, uses the shock absorbing bracket to provide a strong support structure to ensure the stability of the installation of the sealing cover body, and uses the deformation of the shock absorbing bracket to transmit vibration energy to the energy dissipation spring, thereby meeting the functional requirements of stable support and vibration consumption.

Description

Technical Field

[0001] The invention relates to the technical field of fire resistance of a sling anchor cup, and more particularly to a sling anchor cup protective structure with fire resistance and shock absorption functions. Background Art

[0002] The cable system (main cable, slings, etc.) of a suspension bridge is the key load-bearing structure of a cable system bridge, commonly known as the "lifeline" of the bridge. Ensuring the safety and durability of the cable system is the top priority in the construction and operation of a cable system bridge. Most of the main cables and slings of suspension bridges have been subjected to relevant fire-resistant, heat-insulating and sealing protection. Since the anchor cup of the sling is poured with a zinc-copper alloy with a melting point of about 400°C and the anchor cup of this sling has not yet been subjected to fire-resistant, heat-insulating and sealing protection.

[0003] Therefore, in order to significantly improve the disaster prevention, disaster resistance and corrosion resistance of cable system bridges, ensure the safety and stability of cable system bridges, extend the safe operation life of bridges, and ensure the safe and efficient operation of bridges during the operation period, the protection of the cable anchor cup is of great significance.

[0004] However, during the experimental trial, it was found that although the fire-proof and fire-resistant cover installed on the outside of the cable anchor cup can play a fire-resistant role, the cables of the suspension bridge are often in a vibrating state due to the influence of wind. This causes the structure of the cover installed on the outside to vibrate frequently, affecting the stability of the cable and the overall installation effect.

[0005] Therefore, providing a sling anchor cup protection structure that can balance fire resistance and shock absorption effects is an urgent problem that needs to be solved by those skilled in the art. Summary of the invention

[0006] In view of this, the present invention provides a sling anchor cup protection structure with fire resistance and shock absorption functions, aiming to solve the above technical problems.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A sling anchor cup protection structure with fire resistance and shock absorption functions, comprising:

[0009] Sealing cover body; the sealing cover body is a cylindrical body with openings at both ends, and is sealed and wrapped and fixed on the outside of the sling anchor cup; the inner surface of the sealing cover body has a sealing fire-resistant layer; an isolation gap is formed between the sealing cover body and the sling anchor cup;

[0010] Inner support sleeve; the inner support sleeve is tightly fitted on the outer side wall of the sling anchor cup;

[0011] Shock-absorbing bracket; the shock-absorbing bracket is connected to the outer side wall of the inner support sleeve and is tightly pressed between the sealing cover body and the inner support sleeve. The shock-absorbing bracket can produce extrusion deformation and has an energy dissipation spring.

[0012] Through the above technical scheme, the sling anchor cup protection structure provided by the present invention sets a sealing cover body on the outside of the sling anchor cup to achieve isolation and fire prevention, and connects the shock-absorbing bracket through the inner support sleeve fixed on the sling anchor cup so that the shock-absorbing bracket is supported between the sealing cover body and the inner support sleeve, and the vibration is transmitted to the energy dissipation spring through the deformation of the shock-absorbing bracket. The present invention uses the shock-absorbing bracket to provide a strong supporting structure to ensure the stability of the installation of the sealing cover body, and uses the deformation of the shock-absorbing bracket to transmit the vibration energy to the energy dissipation spring, thereby meeting the functional requirements of stable support and vibration consumption, and has a good shock-absorbing effect.

[0013] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the shock-absorbing bracket also includes a support rod; the number of the support rods is two, and a long hole is opened in the middle of each of the support rods, and the two support rods are arranged in an X-shape cross, and are fastened and connected by the cooperation of a locking bolt and a locking nut passing through the two long holes; the two ends on the same side of the two support rods are respectively connected to the two hinge seats on the inner support sleeve through a pin shaft, and the two ends on the other side of the two support rods are pressed tightly against the inner wall of the sealing cover body; the number of the energy dissipation springs is two, and the two ends are respectively pressed and fixed in the upper and lower forks of the X-shaped structure formed by the two support rods.

[0014] The beneficial effects of adopting the above technical solution are as follows: the present invention adopts an X-shaped cross structure as a shock-absorbing bracket, and the X-shaped cross structure has good structural stability and adjustability. During vibration, the vibration energy is transmitted to the energy dissipation spring through the deformation of the X-shaped bracket, and the energy dissipation spring can also provide elastic force to the X-shaped bracket. At the same time, the connection form of the long hole ensures that the X-shaped bracket has a certain elastic deformation ability, can have a long service life, and maintain a longer use effect.

[0015] It should be noted that the locking bolt and the locking nut of the X-shaped bracket provided by the present invention are in a tightened state during installation, and for the convenience of positioning, one end of the long hole can be used as a connection point during production and tightened. During deformation, as the support rod deforms, the fastening points of the locking bolt and the locking nut gradually move along the long hole, causing the X-shaped bracket to deform and meet the support strength.

[0016] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the end where the support rod and the inner side wall of the sealing cover body are pressed tightly is provided with an arc-shaped fitting plate.

[0017] The beneficial effect of adopting the above technical solution is that the arc-shaped bonding plate structure can make the shock-absorbing bracket of the X-shaped cross structure fit more closely with the inner side wall of the sealing cover body.

[0018] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the number of the shock absorption brackets is 4, and they are evenly arranged around the outer side of the inner support sleeve.

[0019] The beneficial effect of adopting the above technical solution is: arranging 4 shock-absorbing brackets around the outside of the inner support sleeve can meet the shock-absorbing requirements from different directions and achieve better control effect.

[0020] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the inner side wall of the inner support sleeve has a rubber layer.

[0021] The beneficial effects of adopting the above technical solution are: by providing the rubber layer, the friction between the inner support sleeve and the sling anchor cup can be increased, the integrity between the inner support sleeve and the sling anchor cup can be improved, and shock absorption and energy dissipation can also be performed.

[0022] Preferably, in the above-mentioned sling anchor cup protective structure with fire-resistant and shock-absorbing functions, the sealed fire-resistant layer includes two layers of flame-retardant fire-resistant sealant coating layers, and a composite fiber fire-resistant insulation belt bonded between the two layers of the flame-retardant fire-resistant sealant coating layers.

[0023] The beneficial effect of adopting the above technical solution is that the use requirements and effects of fire isolation can be met by using two flame retardant and fire resistant sealant coating layers and the composite fiber fire resistant insulation belt in combination.

[0024] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the sealing cover body includes two first half shells equally divided along the plane where the central axis thereof is located, and the edge of the butt joint of the first half shells has a first flange plate protruding outward; the two first half shells are connected to the two first flange plates that are butt-jointed by a first bolt member.

[0025] The beneficial effects of adopting the above technical solution are: the split structure of the half shell can meet the assembly and installation requirements of the outer side of the sling anchor cup, and the bolt fastening method has the advantages of simple, convenient and reliable connection.

[0026] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, a rubber sealing strip is embedded on the butt edges of the two first half shells; and the butt edge surfaces of the two first half shells are coated with a flame retardant and fire resistant sealant.

[0027] The beneficial effects of the above technical solution are: the rubber sealing strip can improve the sealing performance after the half shells are butted, and can improve the integrity of the half shells after assembly. Applying a flame retardant fireproof sealant at the butt joint of the half shells can prevent the fireproof failure of the joint position due to improper protection.

[0028] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the inner support sleeve includes two second half shells evenly divided along the plane where the central axis thereof is located, and the edge of the butt joint of the second half shells has a second flange plate protruding outward; the two second half shells are connected to the two second flange plates that are butt-jointed by second bolt members.

[0029] The beneficial effects of adopting the above technical solution are: the split structure of the half shell can meet the assembly and installation requirements of the outer side of the sling anchor cup, and the bolt fastening method has the advantages of simple, convenient and reliable connection.

[0030] Preferably, in the above-mentioned sling anchor cup protection structure with fire resistance and shock absorption functions, the butt joint surfaces of the two first half shells and the butt joint surfaces of the two second half shells are perpendicular to each other.

[0031] The beneficial effect of adopting the above technical solution is that the staggered assembly connection method can make the outward forces of the two different, which can improve the structural stability.

[0032] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a sling anchor cup protection structure with fire resistance and shock absorption functions, which has the following beneficial effects:

[0033] 1. The cable anchor cup protection structure provided by the present invention is provided with a sealing cover body on the outside of the cable anchor cup to achieve isolation and fire prevention, and the shock-absorbing bracket is connected through an inner support sleeve fixed on the cable anchor cup so that the shock-absorbing bracket is supported between the sealing cover body and the inner support sleeve, and the vibration is transmitted to the energy dissipation spring through the deformation of the shock-absorbing bracket. The present invention uses the shock-absorbing bracket to provide a strong supporting structure to ensure the stability of the installation of the sealing cover body, and uses the deformation of the shock-absorbing bracket to transmit the vibration energy to the energy dissipation spring, thereby meeting the functional requirements of stable support and vibration consumption, and has a good shock-absorbing effect.

[0034] 2. The present invention adopts an X-shaped cross structure as a shock-absorbing bracket. The X-shaped cross structure has good structural stability and adjustability. During vibration, the vibration energy is transmitted to the energy dissipation spring through the deformation of the X-shaped bracket. At the same time, the energy dissipation spring can also provide elastic force to the X-shaped bracket. At the same time, the connection form of the long hole ensures that the X-shaped bracket has a certain elastic deformation ability, can have a long service life, and maintain a longer period of use effect.

[0035] 3. The X-shaped bracket provided by the present invention utilizes a long hole structure, so that the support rod can gradually guide the deformation of the X-shaped bracket with plastic deformation and the elastic force of the energy dissipation spring, and provide support, which can meet the support strength and stability and greatly improve the service life and use effect.

[0036] 4. The X-shaped bracket of the present invention utilizes the length characteristics of the long hole and uses one end thereof as a connection point to limit the initial fixed positions of the two support rods, making connection and positioning more convenient.

[0037] 5. The X-shaped bracket of the present invention is connected by bolts and the end is hinged. When it fails after long-term use, the overall structure can be replaced by replacing the support rod, locking bolt, locking nut or pin shaft, which is easy to replace the structure and prevent cost loss.

[0038] 6. The present invention provides a sealing cover body on the outer side of the existing cable anchor cup, and processes a sealing fire-resistant layer on the inner surface of the sealing cover body, which can achieve fire-proof isolation protection for the cable anchor cup, ensure the safety and stability of the cable system bridge, extend the safe operation life of the bridge, ensure the safe and efficient operation of the bridge during the operation period, and greatly improve the disaster prevention, disaster resistance and corrosion resistance of the cable system bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] Figure 1 The accompanying drawing is a schematic diagram of the external structure of the sling anchor cup protection structure provided by the present invention;

[0041] Figure 2 The accompanying drawing is a schematic diagram of a half-section structure of a sling anchor cup protection structure provided by the present invention;

[0042] Figure 3 The accompanying drawing is a schematic structural diagram of a sealing cover body provided by the present invention;

[0043] Figure 4 The accompanying drawing is a schematic structural diagram of the first half shell provided by the present invention;

[0044] Figure 5 The accompanying drawing is a cross-sectional view of the sealing cover body and the sealing fire-resistant layer provided by the present invention;

[0045] Figure 6 The accompanying drawing is a schematic diagram of the sling anchor cup protection structure after the sealing cover body is removed provided by the present invention;

[0046] Figure 7 The accompanying drawing is a schematic structural diagram of the inner support sleeve provided by the present invention;

[0047] Figure 8 The accompanying drawing is a front structural schematic diagram of the shock-absorbing bracket provided by the present invention;

[0048] Fig. 9 The accompanying drawing is a schematic diagram of the back structure of the shock-absorbing bracket provided by the present invention.

[0049] in:

[0050] 1- Sealing cover body;

[0051] 11-isolation gap; 12-first half shell; 13-first flange plate; 14-first bolt member; 15-locking ring; 16-conical diameter reducing section; 17-cylindrical section; 18-closed ring

[0052] 2-Inner support sleeve;

[0053] 21-hinged seat; 22-second half shell; 23-second flange plate; 24-second bolt member;

[0054] 3- shock-absorbing bracket;

[0055] 31-energy dissipation spring; 32-support rod; 321-long hole; 33-locking bolt; 34-locking nut; 35-arc-shaped bonding plate;

[0056] 4-Sling anchor cup;

[0057] 5-Sealing fire-resistant layer;

[0058] 51-flame retardant fire-resistant sealant coating layer; 52-composite fiber fire-resistant insulation belt. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] See attached Figure 1 and attached Figure 2 The embodiment of the present invention discloses a sling anchor cup protection structure with fire resistance and shock absorption functions, comprising:

[0061] The sealing cover body 1 is a cylindrical body with openings at both ends, and is sealed and wrapped and fixed on the outside of the sling anchor cup 4; the inner surface of the sealing cover body 1 has a sealing fire-resistant layer 5; an isolation gap 11 is formed between the sealing cover body 1 and the sling anchor cup 4;

[0062] Inner support sleeve 2; The inner support sleeve 2 is fastened to the outer side wall of the sling anchor cup 4;

[0063] Shock-absorbing bracket 3; the shock-absorbing bracket 3 is connected to the outer wall of the inner support sleeve 2, and is tightly pressed between the sealing cover body 1 and the inner support sleeve 2. The shock-absorbing bracket 3 can produce extrusion deformation, and the shock-absorbing bracket 3 has an energy dissipation spring 31.

[0064] Embodiment 1:

[0065] See attached Figure 3 and 4 The sealing cover body 1 includes two first half shells 12 equally divided along the plane where the axis thereof is located, and the edge of the butt joint of the first half shells 12 has a first flange plate 13 protruding outward; the two first half shells 12 are connected to the two first flange plates 13 that are in close contact with each other through a first bolt member 14.

[0066] The appearance design of the sealing cover body 1 is generally designed according to the appearance of the sling anchor cup 4:

[0067] The sealing cover body 1 includes a locking ring 15, a conical reducing section 16 and a cylindrical section 17 which are coaxially formed in sequence; the locking ring 15 is tightly sleeved on the sling wire rope at the top of the sling anchor cup 4, the conical reducing section 16 and the cylindrical section 17 are located on the outside of the sling anchor cup 4, and the bottom edge of the cylindrical section 17 has a radially inwardly protruding closed ring 18, and the inner ring of the closed ring 18 is tightly sealed against the bottom edge of the sling anchor cup 4.

[0068] Embodiment 2:

[0069] See attached Figure 5 The sealing fireproof layer 5 includes two layers of flame retardant and fireproof sealant coating layers 51 , and a composite fiber fireproof insulation belt 52 bonded between the two layers of flame retardant and fireproof sealant coating layers 51 .

[0070] In order to further optimize the above technical solution, a rubber sealing strip is embedded on the butt edges of the two first half shells 12 ; and a flame retardant and fire resistant sealant is coated on the butt edges of the two first half shells 12 .

[0071] In this embodiment, the sealing cover body 1 is made of 304 stainless steel with a thickness of 3 mm. The flame retardant fire-resistant sealant coating layer 51 and the flame retardant fire-resistant sealant are both made of B-FRS flame retardant silica gel; the composite fiber fire-resistant insulation belt 52 is made of aerogel composite insulation felt HLGX-853, which is made of nano-silicon dioxide aerogel as the main raw material and glass fiber as the reinforcing material. The thickness of the two layers of flame retardant fire-resistant sealant coating layers 51 is 1000 μm; the thickness of the composite fiber fire-resistant insulation belt 52 is 4±1 mm.

[0072] The sealing cover body 1 and the sealing fire-resistant layer 5 are constructed according to the following process and sequence:

[0073] ① Cleaning the inner surface of the sealing cover body 1: Remove dirt, such as dust, oil, etc., from the inner surface of the sealing cover body 1 until the inner surface of the sealing cover body 1 is clean and dry.

[0074] ② Scrape the first flame retardant and fire resistant sealant coating layer 51: Scrape the flame retardant and fire resistant sealant on the inner surface of the sealing cover body 1, and use a special scraper to scrape the flame retardant and fire resistant sealant on the inner surface of the sealing cover body 1. The thickness of the flame retardant and fire resistant sealant coating is about 1000μm. Be careful not to have any phenomenon such as missing coating and bubbling.

[0075] ③ Construction of composite fiber fire-resistant insulation belt 52, referred to as FCFR fireproof belt: stick the FCFR fireproof belt on the first flame retardant fireproof sealant coating layer 51 scraped on the inner surface of the sealing cover body 1, and the joints should be tight and neat without obvious gaps.

[0076] ④ Scrape the second flame retardant and fire resistant sealant coating layer 51: After the construction of the FCFR fire resistant belt is completed, scrape the second flame retardant and fire resistant sealant, and use a special scraper to scrape the flame retardant and fire resistant sealant onto the surface of the FCFR fire resistant belt. The thickness of the flame retardant and fire resistant sealant coating is about 1000μm. Note that in order to make the finished product look beautiful, the surface of the second flame retardant and fire resistant sealant should be uniform, smooth and free of defects after construction, and pinholes, cracks, shedding, missing coating, etc. are not allowed.

[0077] ⑤ Install a rubber sealing strip on the butt joint surface of the stainless steel sealing cover body 1, and then apply flame retardant and fire resistant sealant on all butt joint surfaces.

[0078] Embodiment 3:

[0079] See attached Figure 6 To Attachment Fig. 9The shock-absorbing bracket 3 also includes a support rod 32; there are two support rods 32, each of which is provided with a long hole 321 in the middle, and the two support rods 32 are arranged in an X-shaped cross, and are fastened and connected through the two long holes 321 by the cooperation of a locking bolt 33 and a locking nut 34; the two ends on the same side of the two support rods 32 are respectively connected to the two hinge seats 21 on the inner support sleeve 2 through a pin shaft, and the two ends on the other side of the two support rods 32 are tightly pressed against the inner side wall of the sealing cover body 1; there are two energy-dissipating springs 31, and the two ends are respectively tightly fixed in the upper and lower forks of the X-shaped structure formed by the two support rods 32.

[0080] In order to further optimize the above technical solution, an arc-shaped fitting plate 35 is provided on the end of the support rod 32 which is pressed tightly against the inner wall of the sealing cover body 1 .

[0081] In order to further optimize the above technical solution, the inner wall of the inner support sleeve 2 has a rubber layer.

[0082] In order to further optimize the above technical solution, the inner support sleeve 2 includes two second half shells 22 equally divided along the plane where the axis thereof is located, and the edge of the butt joint of the second half shells 22 has a second flange plate 23 protruding outward; the two second half shells 22 are connected to the two second flange plates 23 that are in abutment with each other through a second bolt member 24.

[0083] In order to further optimize the above technical solution, the butt joint surfaces of the two first half shells 12 and the butt joint surfaces of the two second half shells 22 are perpendicular to each other.

[0084] In this embodiment, the number of the shock absorbing brackets 3 is four, and they are evenly arranged around the outer side of the inner supporting sleeve 2 .

[0085] The assembly method of this embodiment is:

[0086] First, the shock-absorbing bracket 3 is locked. In order to facilitate positioning, during production, the end of the long hole 321 close to the inner support sleeve 2 is used as the connection point, and the locking bolt 33 and the locking nut 34 are tightened. The radial protrusion length of the shock-absorbing bracket 3 after tightening is the gap length of the isolation gap 11.

[0087] The two second half shells 22 of the adjusted shock-absorbing bracket 3 are put on the outside of the sling anchor cup 4 for fixing. For the structure of the sling anchor cup 4 with different outer diameters, foam glue can be filled in the gap between the second half shell 22 and the sling anchor cup 4. The two second flange plates 23 that are fitted and butted are connected by the second bolt member 24, so that the two second half shells 22 are fastened.

[0088] The sealing cover body 1 is docked and installed on the outside of the sling anchor cup 4 and the shock absorbing bracket 3, and all the first bolts 14 on the sealing cover body 1 are tightened to complete the sealing protection of the sling anchor cup 5. After the installation is completed, the shock absorbing bracket 3 is pressed against the inner wall of the sealing cover body 1.

[0089] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0090] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sling anchor cup protection structure with fire resistance and shock absorption functions, characterized in that: include: A sealing cover body (1); the sealing cover body (1) is a cylindrical body with openings at both ends, and is sealed and wrapped and fixed on the outside of the sling anchor cup (4); the inner surface of the sealing cover body (1) has a sealing fire-resistant layer (5); an isolation gap (11) is formed between the sealing cover body (1) and the sling anchor cup (4); Inner support sleeve (2); the inner support sleeve (2) is tightly fitted on the outer side wall of the sling anchor cup (4); A shock absorbing bracket (3); the shock absorbing bracket (3) is connected to the outer side wall of the inner support sleeve (2) and is pressed tightly between the sealing cover body (1) and the inner support sleeve (2); the shock absorbing bracket (3) is capable of generating extrusion deformation, and an energy dissipation spring (31) is provided on the shock absorbing bracket (3); The shock-absorbing bracket (3) further comprises a support rod (32); the number of the support rods (32) is two, each of which is provided with a long hole (321) in the middle, the two support rods (32) are arranged crosswise in an X shape, and are fastened and connected by passing through the two long holes (321) through the cooperation of a locking bolt (33) and a locking nut (34); the two ends on the same side of the two support rods (32) are respectively connected to the two hinge seats (21) on the inner support sleeve (2) through a pin shaft, and the two ends on the other side of the two support rods (32) are pressed against the inner side wall of the sealing cover body (1); the number of the energy dissipation springs (31) is two, and the two ends are respectively pressed and fixed in the upper and lower forks of the X-shaped structure formed by the two support rods (32).

2. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 1 is characterized in that: An arc-shaped fitting plate (35) is provided on the end of the support rod (32) which is pressed tightly against the inner side wall of the sealing cover body (1).

3. A sling anchor cup protection structure with fire resistance and shock absorption function according to any one of claims 1-2, characterized in that: The number of the shock-absorbing brackets (3) is four, and they are evenly arranged around the outside of the inner support sleeve (2).

4. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 1 is characterized in that: The inner side wall of the inner support sleeve (2) has a rubber layer.

5. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 1 is characterized in that: The sealing fireproof layer (5) comprises two layers of flame retardant and fireproof sealant coating layers (51), and a composite fiber fireproof insulation belt (52) bonded between the two layers of flame retardant and fireproof sealant coating layers (51).

6. A sling anchor cup protection structure with fire resistance and shock absorption function according to any one of claims 1-2 and 4-5, characterized in that: The sealing cover body (1) comprises two first half shells (12) equally divided along a plane where the axis thereof lies, the edges of the butt joints of the first half shells (12) having first flange plates (13) protruding outwards; the two first half shells (12) are connected to the two first flange plates (13) that are butt jointed by first bolts (14).

7. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 6 is characterized in that: A rubber sealing strip is embedded in the butt joint edges of the two first half shells (12); and a flame retardant and fire resistant sealant is coated on the butt joint edge surfaces of the two first half shells (12).

8. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 6 is characterized in that: The inner support sleeve (2) comprises two second half shells (22) equally divided along a plane where the axis thereof lies, the second half shells (22) have a second flange plate (23) protruding outward at the edge of a butt joint; the two second half shells (22) are connected to the two second flange plates (23) that are butt jointed by a second bolt member (24).

9. The sling anchor cup protection structure with fire resistance and shock absorption function according to claim 8, characterized in that: The butt joint surfaces of the two first half shells (12) and the butt joint surfaces of the two second half shells (22) are perpendicular to each other.

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