Anchor head fire-resistant heat-insulation damping device

Abstract

The utility model discloses an anchor head fire-resistant heat-insulation damping device, and relates to the field of bridge engineering construction and maintenance, the anchor head fire-resistant heat-insulation damping device comprises an anchor cover, a heat-insulation sealing layer, a fire-resistant sealing protection layer, a preformed hole, a plugging piece and a fastening mechanism, the anchor cover comprises an inner shell and an outer shell, the inner shell is used for covering the outside of an anchor head, and a cavity is formed between the inner shell and the outer shell; the top end of the outer shell is fixedly sleeved with an annular plate, the outer shell covers the inner shell, the fastening mechanism is used for fixing the annular plate to an anchor plate on the periphery of the upper portion of the anchor head, the heat insulation sealing layer is arranged between the inner shell and the outer shell, a plurality of temperature-resistant flame-retardant flexible cushion blocks are arranged between the inner shell and the outer shell, and the outer shell is wrapped with the fire-resistant sealing protection layer. The preformed hole sequentially penetrates through the fire-resistant sealing protection layer, the outer shell, the heat insulation sealing layer and the bottom of the inner shell, the preformed hole is used for vacuumizing the cavity, and the plugging piece is used for plugging the preformed hole. According to the anchor head fire-resistant heat-insulation damping device, the heat-insulation fire-resistant performance and the sealing performance are improved, and the stability and safety of the device are improved.

Description

Technical Field

[0001] The utility model relates to the field of bridge engineering construction and maintenance, in particular to an anchor head fire-resistant, heat-insulating and shock-absorbing device. Background Art

[0002] Cable anchors are an important part of the cable bridge system, and they bear the important task of bearing the bridge's deadweight and traffic load. The design and performance of cable anchors are directly related to the bridge's load-bearing capacity and stability. Fire is a common disaster that occurs on bridges, and as part of the bridge structure, the fire resistance and heat insulation performance of cable anchors are crucial to the safety of bridges. Reasonable design and high-quality cable anchors can improve the fire resistance of bridges in fires, slow down the spread of fire, extend the evacuation time of bridges, protect people's lives and reduce property losses. In addition, the construction and maintenance costs of bridges are huge. Once disasters such as fires or earthquakes occur, the damage and repair costs of bridges caused by cable anchors will also be very high.

[0003] The existing traditional cable anchor head protection measures mainly include fire-retardant coatings, fire-retardant coating materials, fire-retardant covers, etc. These protection measures not only have limited fire resistance in the face of high-temperature fires and cannot resist the invasion of high temperatures and flames for a long time, but also some protection measures are insufficient in terms of sealing and cannot effectively prevent the penetration of fire smoke, heat and harmful gases. In addition, some traditional cable anchor head protection measures have poor seismic resistance to earthquakes or other external forces, and are easily affected by external forces and fail to fall off. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an anchor head fire-resistant heat-insulating and shock-absorbing device, which improves the heat-insulating and fire-resistant performance and the sealing performance, and improves the stability and safety of the device.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides an anchor head fireproof heat insulation and shock absorption device, comprising an anchor cover, a heat insulation sealing layer, a fireproof sealing protective layer, a reserved hole, a plugging piece and a fastening mechanism, wherein the anchor cover comprises an inner shell and an outer shell, wherein both the inner shell and the outer shell are structures with an open top, the inner shell is used to cover the outside of the anchor head, and a chamber is formed between the inner shell and the outer shell, an annular plate is provided on the external fixing sleeve at the top end of the outer shell, the outer shell cover is arranged on the outside of the inner shell, and the fastening mechanism is used to fix the annular plate to the periphery of the upper part of the anchor head. On the anchor plate, the heat insulating sealing layer is arranged between the inner shell and the outer shell, and a plurality of temperature-resistant and flame-retardant flexible pads are arranged between the inner shell and the outer shell, and both ends of each of the temperature-resistant and flame-retardant flexible pads are respectively abutted against the inner shell and the outer shell, and the fire-resistant sealing protective layer is wrapped on the outside of the outer shell, and the reserved hole passes through the fire-resistant sealing protective layer, the outer shell, the heat insulating sealing layer and the bottom of the inner shell in sequence, the reserved hole is used to evacuate the chamber, and the sealing member is used to seal the reserved hole.

[0007] Preferably, it further comprises a temperature-resistant and flame-retardant flexible gasket, the upper portion of which contacts the lower surface of the anchor plate, and the lower portion of which contacts the upper surfaces of the thermal insulation sealing layer, the outer shell and the annular plate.

[0008] Preferably, the fastening mechanism includes a plurality of fastening components, and the fastening components include a screw and a nut, one end of the screw passes through the annular plate in turn and is installed in the first threaded hole of the anchor plate, and the other end of the screw is installed with the nut, and the nut is used to tighten against the annular plate and thereby fix the annular plate to the anchor plate.

[0009] Preferably, a sealing rubber pad is provided on the top of the inner shell, and the sealing rubber pad is used to contact the lower surface of the anchor plate.

[0010] Preferably, a first through hole is provided at the bottom of the fire-resistant sealing protective layer, a second threaded hole is provided at the bottom of the outer shell, a second through hole is provided at the bottom of the heat-insulating sealing layer, and a third through hole is provided at the bottom of the inner shell. The first through hole, the second threaded hole, the second through hole and the third through hole are connected in sequence to form the reserved hole, and the sealing component is a sealing rubber plug, and the outer wall of the sealing rubber plug is provided with an external thread matching the second threaded hole structure, and the external fixing sleeve at the lower end of the sealing rubber plug is provided with an annular block.

[0011] Preferably, a plurality of the temperature-resistant and flame-retardant flexible pads are sequentially arranged on the outer side of the periphery of the inner shell along the circumferential direction, and another plurality of the temperature-resistant and flame-retardant flexible pads are arranged on the outer side of the bottom of the inner shell.

[0012] Preferably, the heat insulating sealing layer comprises a plurality of ceramic fiber fire-resistant wool layers and a plurality of first high temperature resistant flame retardant sealant layers, and the plurality of ceramic fiber fire-resistant wool layers and the plurality of first high temperature resistant flame retardant sealant layers are laid in sequence and spaced apart.

[0013] Preferably, the fire-resistant sealing protective layer comprises a plurality of basalt fiber mesh cloth layers and a plurality of second high-temperature resistant flame-retardant sealant layers, and the plurality of basalt fiber mesh cloth layers and the plurality of second high-temperature resistant flame-retardant sealant layers are laid in sequence and at intervals.

[0014] Preferably, the thickness of the heat-insulating sealing layer is 5 mm to 6 mm, and the thickness of the fire-resistant sealing protective layer is 3 mm to 4 mm.

[0015] Preferably, the inner shell and the outer shell are both made of metal, the thickness of the inner shell is 1.0 mm to 1.5 mm, and the thickness of the outer shell is 1.5 mm to 2.5 mm.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] In the anchor head fireproof heat-insulating shock-absorbing device of the utility model, a heat-insulating sealing layer is arranged between the inner shell and the outer shell, and a plurality of temperature-resistant and flame-retardant flexible pads are arranged between the inner shell and the outer shell, and both ends of each temperature-resistant and flame-retardant flexible pad are respectively abutted against the inner shell and the outer shell, and the fire-resistant sealing protective layer is wrapped around the outside of the outer shell. By arranging the heat-insulating sealing layer and the fire-resistant sealing protective layer, high temperature can be effectively isolated, good fire resistance can be provided, and the anchor head can be protected from fire, and the overall sealing performance can be ensured to prevent the penetration of fire smoke, hot air and harmful gases. The temperature-resistant and flame-retardant flexible pads play a role in shock absorption and explosion prevention, and can effectively reduce the impact of earthquakes or other external forces on the device, and improve the stability and safety of the device. The chamber between the anchor head and the inner shell can be vacuumed through the reserved hole to increase the heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The utility model is a schematic structural diagram of the anchor head fire-resistant, heat-insulating and shock-absorbing device provided by the utility model.

[0020] Explanation of the accompanying drawings: 1. Cable wire bundle; 2. Anchor head; 3. Inner shell; 4. Heat insulation sealing layer; 5. Temperature-resistant and flame-retardant flexible pad; 6. Outer shell; 7. Fire-resistant sealing protective layer; 8. Chamber; 9. Anchor plate; 10. Annular plate; 11. Screw; 12. Nut; 13. Reserved hole; 14. Sealing rubber plug; 15. Annular block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model aims to provide an anchor head fire-resistant heat-insulating and shock-absorbing device, which improves the heat-insulating and fire-resistant performance and the sealing performance, and improves the stability and safety of the device.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 As shown, this embodiment provides an anchor head fireproof heat insulation and shock absorption device, including an anchor cover, a heat insulation sealing layer 4, a fireproof sealing protective layer 7, a reserved hole 13, a plugging member and a fastening mechanism. A cable steel wire bundle 1 is arranged inside the anchor head 2, and an anchor plate 9 is arranged on the peripheral fixing sleeve on the upper part of the anchor head 2. The anchor cover includes an inner shell 3 and an outer shell 6. Both the inner shell 3 and the outer shell 6 are open-end structures. The inner shell 3 is used to cover the outside of the anchor head 2, and a chamber 8 is formed between the inner shell 3 and the outer shell 6. The outer fixing sleeve at the top of the outer shell 6 is provided with an annular plate 10. The outer shell 6 is covered on the outside of the inner shell 3. The fastening mechanism is used to fix the annular plate 1 0 is fixed on the anchor plate 9 around the upper part of the anchor head 2, and the heat-insulating sealing layer 4 is arranged between the inner shell 3 and the outer shell 6, that is, the heat-insulating sealing layer 4 fills and seals the gap between the inner shell 3 and the outer shell 6, which can prevent the external heat from being transferred inward; a plurality of heat-resistant and flame-retardant flexible pads 5 are arranged between the inner shell 3 and the outer shell 6, and the two ends of each heat-resistant and flame-retardant flexible pad 5 are respectively abutted on the inner shell 3 and the outer shell 6, and the heat-resistant and flame-retardant flexible pads 5 have elasticity and supporting force, and can play a role in shock absorption and explosion prevention; the fire-resistant sealing protective layer 7 is wrapped on the outside of the outer shell 6, which ensures the overall fire resistance and sealing of the device. The reserved hole 13 passes through the fire-resistant sealing protective layer 7, the outer shell 6, the heat-insulating sealing layer 4 and the bottom of the inner shell 3 in sequence, and the reserved hole 13 is used to evacuate the chamber 8, and the reserved hole 13 can also be used to discharge the accumulated water, and the plugging piece is used to plug the reserved hole 13.

[0025] In this embodiment, by providing a heat-insulating sealing layer 4 and a fire-resistant sealing protective layer 7, high temperature can be effectively isolated, good fire resistance can be provided, the anchor head 2 and the cable wire bundle 1 can be protected from fire, and the overall sealing performance can be ensured to prevent the penetration of fire smoke, hot air and harmful gases. The temperature-resistant and flame-retardant flexible pad 5 plays a role in shock absorption and explosion prevention, which can effectively reduce the impact of earthquakes or other external forces on the device and improve the stability and safety of the device. The chamber 8 between the anchor head 2 and the inner shell 3 can be vacuumed through the reserved hole 13 to increase the heat insulation effect.

[0026] The anchor head fireproof heat insulation and shock absorption device in this embodiment replaces the original design or maintenance process using metal protective cover, plastic steel protective cover or plastic film simple wrapping protection scheme, improves the long-term use performance of the anchor head, anchor head protection device and cable anchoring area such as sealing and corrosion resistance and fireproof heat insulation, and further improves the durability and safety of the cable system. The device can provide fireproof, heat-insulating and explosion-proof protection for the cable anchor head of the suspension bridge, the cable anchor head of the arch bridge, the cable anchor head of the cable-stayed bridge and the lower anchor head of the main cable. The manufacturing process is simple, the cost is low, and it is generally applicable to the cable anchor head 2 protection field of various in-service or newly built cable bridges.

[0027] This embodiment also includes a temperature-resistant and flame-retardant flexible gasket, the upper part of which is in contact with the lower surface of the anchor plate 9, and the lower part of which is in contact with the upper surface of the thermal insulation sealing layer 4, the outer shell 6 and the annular plate 10. The flame retardant effect is further improved by arranging the temperature-resistant and flame-retardant flexible gasket.

[0028] Specifically, the fastening mechanism includes a plurality of fastening components, and the fastening components include a screw 11 and a nut 12. One end of the screw 11 passes through the annular plate 10 in turn and is installed in the first threaded hole of the anchor plate 9. The other end of the screw 11 is installed with a nut 12, and the nut 12 is used to press against the annular plate 10 and then fix the annular plate 10 on the anchor plate 9. In this embodiment, the annular plate 10 is provided with a plurality of light holes for the screw 11 to pass through, and the anchor plate 9 is provided with a plurality of first threaded holes corresponding to the light holes one by one.

[0029] When it is necessary to remove and inspect, the nut 12 is screwed off the screw rod 11, and then the outer shell 6 and the inner shell 3 can be removed. In this embodiment, the screw rod 11 and the nut 12 cooperate to fix or remove the anchor cover and the anchor head 2, which is easy to operate and convenient for maintenance and repair.

[0030] In this embodiment, a sealing rubber pad is provided on the top of the inner shell 3, and the sealing rubber pad is used to contact the lower surface of the anchor plate 9, thereby improving the sealing performance of the chamber 8 and facilitating the subsequent vacuum operation.

[0031] A first through hole is arranged at the bottom of the fire-resistant sealing protection layer 7, a second threaded hole is arranged at the bottom of the outer shell 6, a second through hole is arranged at the bottom of the heat-insulating sealing layer 4, and a third through hole is arranged at the bottom of the inner shell 3. The first through hole, the second threaded hole, the second through hole and the third through hole are connected in sequence to form a reserved hole 13. The sealing member is a sealing plug 14. The outer wall of the sealing plug 14 is provided with an external thread matching the second threaded hole structure. An annular block 15 is arranged at the external fixing sleeve at the lower end of the sealing plug 14. The annular block 15 is arranged to facilitate the screwing of the sealing plug 14.

[0032] Specifically, a plurality of heat-resistant and flame-retardant flexible pads 5 are sequentially arranged on the outer side of the periphery of the inner shell 3 along the circumferential direction, and another plurality of heat-resistant and flame-retardant flexible pads 5 are arranged on the outer side of the bottom of the inner shell 3 .

[0033] In this specific embodiment, six temperature-resistant and flame-retardant flexible pads 5 are arranged between the inner shell 3 and the outer shell 6, among which four temperature-resistant and flame-retardant flexible pads 5 are evenly arranged in sequence along the circumferential direction on the outer side of the inner shell 3, and the other two temperature-resistant and flame-retardant flexible pads 5 are arranged on the outer side of the bottom of the inner shell 3.

[0034] Specifically, the heat-insulating sealing layer 4 includes a plurality of ceramic fiber fire-resistant cotton layers and a plurality of first high-temperature resistant flame-retardant sealant layers, and the plurality of ceramic fiber fire-resistant cotton layers and the plurality of first high-temperature resistant flame-retardant sealant layers are laid in sequence. The heat-insulating sealing layer 4 in this embodiment only needs to overlap and cover the high-temperature resistant flame-retardant sealant and the ceramic fiber fire-resistant cotton in a certain order, and the operation is simple.

[0035] In this specific embodiment, the innermost and outermost sides of the heat-insulating sealing layer 4 are both ceramic fiber fire-resistant wool layers.

[0036] Specifically, the fire-resistant sealing protective layer 7 includes a plurality of basalt fiber mesh cloth layers and a plurality of second high-temperature resistant flame-retardant sealant layers, and the plurality of basalt fiber mesh cloth layers and the plurality of second high-temperature resistant flame-retardant sealant layers are laid in sequence and at intervals.

[0037] In this specific embodiment, the innermost side and the outermost side of the fire-resistant sealing protective layer 7 are both a second high-temperature resistant flame-retardant sealant layer.

[0038] The fire-resistant sealing protective layer 7 in this embodiment adopts a "3 glues 2 cloths" fire-resistant sealing combination measure, wherein the "3 glues 2 cloths" are, in sequence, a second high-temperature resistant flame-retardant sealant layer covered with a basalt fiber mesh cloth layer, a second high-temperature resistant flame-retardant sealant layer covered thereon, a basalt fiber mesh cloth layer covered thereon, and finally a second high-temperature resistant flame-retardant sealant layer covered thereon.

[0039] The fire-resistant sealing protective layer 7 in this embodiment is relatively simple to construct. It only needs to overlay and cover the high-temperature resistant flame-retardant sealant and the basalt fiber mesh cloth in a certain order, which reduces the complexity and time cost of construction. In addition, the high-temperature resistant flame-retardant sealant is naturally cured and has good high-temperature fire resistance, which can effectively isolate high temperature and prevent the spread of fire. By superimposing multiple layers of high-temperature resistant flame-retardant sealants, the fire resistance of the neck of the device is further improved, and the safety of the device in a fire is increased. The basalt fiber mesh cloth has high strength and wear resistance, which can enhance the structural strength of the entire device, and by superimposing multiple layers of high-temperature resistant flame-retardant sealants and basalt fiber mesh cloth, a multi-layer sealing structure is formed, which improves the sealing performance of the device, effectively prevents the penetration of fire smoke, hot air and harmful gases, and improves the overall durability of the device.

[0040] In this specific embodiment, the thickness of the heat-insulating sealing layer 4 is 5 mm to 6 mm, and the thickness of the fire-resistant sealing protective layer 7 is 3 mm to 4 mm.

[0041] In this specific embodiment, the inner shell 3 and the outer shell 6 are both made of metal. The thickness of the inner shell 3 is 1.0 mm to 1.5 mm, and the thickness of the outer shell 6 is 1.5 mm to 2.5 mm.

[0042] The anchor head fire-resistant heat-insulating and shock-absorbing device in this embodiment can effectively enhance the fire-resistant, heat-insulating and shock-absorbing performance of the anchor head, thereby improving the safety and sustainability of the bridge and providing safer passage conditions for vehicles and pedestrians. The anchor head fire-resistant heat-insulating and shock-absorbing device applied to engineering projects can improve the disaster resistance of bridges, reduce the damage to bridges caused by disasters, thereby reducing maintenance and repair costs and improving economic benefits. It is of great significance to improve the disaster prevention ability of bridge structures and reduce casualties and property losses caused by fires and earthquakes. In addition, the research on the anchor head fire-resistant heat-insulating and shock-absorbing device is also conducive to promoting the innovation and development of bridge engineering technology and promoting the sustainable development of bridge engineering construction. In addition, the anchor head fire-resistant heat-insulating and shock-absorbing device is also suitable for fire-resistant and heat-insulating protection of industrial and civil construction, nuclear power plant anchor heads, etc.

[0043] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. An anchor head fire-resistant, heat-insulating and shock-absorbing device, characterized in that: The anchor cover comprises an inner shell and an outer shell, both of which are open-end structures, the inner shell is used to cover the outside of the anchor head, and a chamber is formed between the inner shell and the outer shell, the outer fixing sleeve at the top of the outer shell is provided with an annular plate, the outer shell cover is provided on the outside of the inner shell, the fastening mechanism is used to fix the annular plate to the anchor plate on the upper periphery of the anchor head, the insulating sealing layer is provided between the inner shell and the outer shell, a plurality of temperature-resistant and flame-retardant flexible pads are provided between the inner shell and the outer shell, both ends of each of the temperature-resistant and flame-retardant flexible pads are respectively abutted against the inner shell and the outer shell, the fire-resistant sealing protective layer is wrapped on the outside of the outer shell, the reserved hole passes through the fire-resistant sealing protective layer, the outer shell, the insulating sealing layer and the bottom of the inner shell in sequence, the reserved hole is used to evacuate the chamber, and the blocking piece is used to block the reserved hole.

2. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: It also includes a temperature-resistant and flame-retardant flexible gasket, the upper part of which contacts the lower surface of the anchor plate, and the lower part of which contacts the thermal insulation sealing layer, the outer shell and the upper surface of the annular plate.

3. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: The fastening mechanism includes a plurality of fastening components, each of which includes a screw and a nut. One end of the screw passes through the annular plate in sequence and is installed in the first threaded hole of the anchor plate. The other end of the screw is installed with the nut, which is used to tighten against the annular plate and thereby fix the annular plate to the anchor plate.

4. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: A sealing rubber pad is arranged on the top of the inner shell, and the sealing rubber pad is used to contact the lower surface of the anchor plate.

5. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: A first through hole is provided at the bottom of the fire-resistant sealing protection layer, a second threaded hole is provided at the bottom of the outer shell, a second through hole is provided at the bottom of the heat-insulating sealing layer, and a third through hole is provided at the bottom of the inner shell. The first through hole, the second threaded hole, the second through hole and the third through hole are connected in sequence to form the reserved hole. The sealing component is a sealing rubber plug, and an outer wall of the sealing rubber plug is provided with an external thread matching the second threaded hole structure, and an external fixing sleeve at the lower end of the sealing rubber plug is provided with an annular block.

6. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: A plurality of the heat-resistant and flame-retardant flexible pads are sequentially arranged on the outer side of the periphery of the inner shell along the circumferential direction, and another plurality of the heat-resistant and flame-retardant flexible pads are arranged on the outer side of the bottom of the inner shell.

7. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: The heat-insulating sealing layer comprises a plurality of ceramic fiber fire-resistant wool layers and a plurality of first high-temperature resistant flame-retardant sealant layers, and the plurality of ceramic fiber fire-resistant wool layers and the plurality of first high-temperature resistant flame-retardant sealant layers are laid in sequence and at intervals.

8. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: The fire-resistant sealing protective layer comprises a plurality of basalt fiber mesh cloth layers and a plurality of second high-temperature resistant flame-retardant sealant layers, and the plurality of basalt fiber mesh cloth layers and the plurality of second high-temperature resistant flame-retardant sealant layers are laid in sequence and at intervals.

9. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1 is characterized in that: The thickness of the heat-insulating sealing layer is 5 mm to 6 mm, and the thickness of the fire-resistant sealing protective layer is 3 mm to 4 mm.

10. The anchor head fire-resistant, heat-insulating and shock-absorbing device according to claim 1, characterized in that: The inner shell and the outer shell are both made of metal. The thickness of the inner shell is 1.0 mm to 1.5 mm, and the thickness of the outer shell is 1.5 mm to 2.5 mm.

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