Fireproof and anti-collision protection device for sling of suspension bridge

Abstract

The utility model discloses a fire-proof and anti-collision protection device of a suspension bridge sling, and relates to the field of suspension bridge sling protection, the fire-proof and anti-collision protection device comprises a sling body and a protection tube sleeved on the outer side of the sling body, the two ends of the sling body are connected with connecting rods, and a plurality of semicircular shells are fixed in the protection tube. The arc surfaces of the multiple semicircular shells face the sling body, the multiple semicircular shells are elastic, the multiple semicircular shells can serve as supporting mechanisms to abut against the outer side of the sling body, the connectivity and the contact area between the protection pipe and the sling body are improved, and the situation that the protection pipe shakes due to the influence of wind power is avoided; the plurality of semicircular shells play a buffering role, when the impact force is too large, the plurality of semicircular shells are broken, and the fireproof polystyrene foam overflows and fills the protection pipe to cover the outer side of the sling body, so that the protection performance is improved, meanwhile, the fireproof function is achieved, and a fire source is prevented from burning on the sling body.

Description

Technical Field

[0001] The utility model relates to the field of suspension bridge sling protection, in particular to a fireproof and anti-collision protection device for the suspension bridge sling. Background Art

[0002] With the rapid development of bridge construction, the number and span of suspension bridge slings are getting larger and larger. At the same time, people have higher and higher requirements for the safety of bridge structures. The safety of the main cables and slings, which are the key load-bearing components of suspension bridge slings, determines the overall safety of the bridge structure. During the operation of suspension bridge slings, collisions and fires caused by vehicle accidents have become huge hidden dangers affecting the safe use of suspension bridge slings, so they should be taken seriously.

[0003] For example, a patent entitled "A suspension bridge cable protection structure" (patent announcement number CN209194335U) discloses a suspension bridge cable protection structure, in which a protective sleeve consisting of two semi-cylinders is mounted on the cable, the lower end of the protective sleeve is pressed against the anchor head at the lower end of the cable, and the upper end of the protective sleeve and the cable are sealed with a sealant to prevent the anti-corrosion material on the cable from being damaged by human beings, effectively protecting the cable. None of the above patents involve anti-collision protection devices for suspension bridge cables, which have certain limitations.

[0004] Therefore, it is necessary to propose a fire and collision protection device for suspension bridge cables to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a fireproof and anti-collision protection device for suspension bridge cables, so as to solve the problem that the above patents do not involve anti-collision protection devices for suspension bridge cables and have certain limitations.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fireproof and anti-collision protection device for a suspension bridge cable, comprising a cable body and a protection tube sleeved on the outside of the cable body, both ends of the cable body are connected with connecting rods, a plurality of semicircular shells are fixed inside the protection tube, the arc surfaces of the plurality of semicircular shells face the cable body, and the plurality of semicircular shells are elastic, the interior of the plurality of semicircular shells is filled with fireproof foam, an isolation pad is fixed between the top and bottom ends of the protection tube, and the isolation pad is attached to the outside of the connecting rod.

[0007] Preferably, the protection tube comprises two semicircular sleeves, connecting ears are fixed on both sides of the two semicircular sleeves, fixing holes are opened on the connecting ears, and fixing bolts are fixed between the corresponding fixing holes.

[0008] Preferably, a plurality of buffers are fixed on the inner wall of the protection tube, and the plurality of buffers include a damper and a spring. One end of the damper is fixed on the inner wall of the protection tube, and the spring is sleeved on the outside of the damper.

[0009] Preferably, a plurality of support tubes are fixed on the inner wall of the protection tube, the support tubes are arranged between two semicircular shells, and the ends of the plurality of support tubes close to the sling body are elastic.

[0010] Preferably, the bottom of the connecting rod at the bottom end of the sling body is rotatably connected to a bridge deck ear plate, and the top of the bridge deck ear plate is provided with a groove for rotatably connecting the connecting rod.

[0011] Preferably, the protection tubes are distributed along the length direction of the sling body.

[0012] Preferably, the outer side of the protection tube is coated with fire retardant coating.

[0013] Technical effects and advantages of the utility model:

[0014] 1. In the actual operation of the utility model, multiple semicircular shells can be used as supporting mechanisms to contact the outside of the sling body, thereby improving the connectivity and contact area between the protection tube and the sling body, avoiding the influence of wind and causing the protection tube to shake. When the device is hit, the multiple semicircular shells play a buffering role. When the impact force is too large, the multiple semicircular shells will rupture, and the fireproof foam will overflow and fill the inside of the protection tube to cover the outside of the sling body, thereby increasing protection and having a fireproof function to prevent the fire source from burning onto the sling body.

[0015] 2. A plurality of support tubes are fixed on the inner wall of the protection tube. The support tubes are arranged between two semicircular shells. The ends of the plurality of support tubes close to the sling body are elastic. The support tubes can increase the connectivity. At the same time, when the fireproof foam overflows, the contact area with the fireproof foam can be increased to improve the tightness of the coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a fireproof and anti-collision protection device for a suspension bridge sling.

[0017] Figure 2 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0018] Figure 3 It is a structural schematic diagram of the connecting ear of the utility model.

[0019] In the figure: 1. Bridge deck ear plate; 2. Connecting rod; 3. Cable body; 4. Protective tube; 5. Semicircular shell; 6. Fireproof foam; 7. Buffer; 8. Connecting ear; 9. Fixing hole; 10. Damping; 11. Spring; 12. Support tube; 13. Isolation pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0021] The utility model provides Figure 1 - Figure 3 The fireproof and anti-collision protection device of a suspension bridge cable shown in the figure includes a cable body 3 and a protection tube 4 sleeved on the outside of the cable body 3. The protection tube 4 includes two semicircular sleeves, and connecting ears 8 are fixed on both sides of the two semicircular sleeves. Fixing holes 9 are opened on the connecting ears 8, and fixing bolts are fixed between the corresponding fixing holes 9.

[0022] The two semicircular sleeves are installed by fixing bolts and are sleeved on the outside of the sling body 3 to protect the outside of the sling body 3.

[0023] An isolation pad 13 is fixed between the top and bottom ends of the protection tube 4, and the isolation pad 13 is attached to the outside of the connecting rod 2. The isolation pad 13 isolates the two ends of the protection tube 4 arranged on the outside of the sling body 3 from the outside air, preventing the outside water vapor from entering the protection tube 4 and causing corrosion to the outside of the sling body 3. The bottom of the connecting rod 2 at the bottom of the sling body 3 is rotatably connected to the bridge deck ear plate 1, and the top of the bridge deck ear plate 1 is provided with a groove for the rotatable connection of the connecting rod 2. The protection tube 4 is distributed along the length direction of the sling body 3, and the outside of the protection tube 4 is coated with fire retardant paint to increase the fire prevention effect.

[0024] Both ends of the sling body 3 are connected to connecting rods 2, and multiple semicircular shells 5 are fixed inside the protective tube 4. The arc surfaces of the multiple semicircular shells 5 face the sling body 3, and the multiple semicircular shells 5 are elastic. The interiors of the multiple semicircular shells 5 are filled with fire-proof foam 6, and multiple buffer parts 7 are fixed on the inner wall of the protective tube 4. The multiple buffer parts 7 include damping 10 and spring 11. One end of the damping 10 is fixed on the inner wall of the protective tube 4, and the spring 11 is sleeved on the outside of the damping 10.

[0025] In the actual operation of the present invention, multiple semicircular shells 5 can be used as a supporting mechanism to contact the outer side of the sling body 3, thereby improving the connectivity and contact area between the protection tube 4 and the sling body 3, avoiding the influence of wind and causing the protection tube 4 to shake. When the device is hit, the multiple semicircular shells 5 play a buffering role. When the impact force is too large, the multiple semicircular shells 5 will rupture, and the fire-proof foam 6 will overflow and fill the inside of the protection tube 4, covering the outer side of the sling body 3 to increase protection. At the same time, it has a fire-proof function to prevent the fire source from burning on the sling body 3.

[0026] A plurality of support tubes 12 are fixed on the inner wall of the protection tube 4, and the support tubes 12 are arranged between two semicircular shells 5. The ends of the plurality of support tubes 12 close to the sling body 3 are elastic. The support tubes 12 can increase the connectivity. At the same time, when the fireproof foam glue 6 overflows, the contact area with the fireproof foam glue 6 can be increased to improve the tightness of the coverage.

Claims

1. A fire and collision protection device for a suspension bridge sling, comprising a sling body (3) and a protection tube (4) sleeved on the outside of the sling body (3), characterized in that: Both ends of the sling body (3) are connected to connecting rods (2), a plurality of semicircular shells (5) are fixed inside the protection tube (4), the arc surfaces of the plurality of semicircular shells (5) face the sling body (3), and the plurality of semicircular shells (5) are elastic, and the interior of the plurality of semicircular shells (5) is filled with fireproof foam (6), and an isolation pad (13) is fixed between the top and bottom ends of the protection tube (4), and the isolation pad (13) is attached to the outer side of the connecting rod (2).

2. The fire and collision protection device for suspension bridge slings according to claim 1 is characterized in that: The protection tube (4) comprises two semicircular sleeves, both sides of which are fixed with connecting ears (8), the connecting ears (8) are provided with fixing holes (9), and fixing bolts are fixed between the corresponding fixing holes (9).

3. The fire and collision protection device for suspension bridge slings according to claim 1 is characterized in that: A plurality of buffer members (7) are fixed on the inner wall of the protection tube (4), and the plurality of buffer members (7) each comprises a damper (10) and a spring (11), one end of the damper (10) is fixed on the inner wall of the protection tube (4), and the spring (11) is sleeved on the outer side of the damper (10).

4. The fire and collision protection device for suspension bridge slings according to claim 3 is characterized in that: A plurality of support tubes (12) are fixed on the inner wall of the protection tube (4), and the support tubes (12) are arranged between two semicircular shells (5). The ends of the plurality of support tubes (12) close to the sling body (3) are all elastic.

5. The fire and collision protection device for suspension bridge slings according to claim 1 is characterized in that: The bottom of the connecting rod (2) at the bottom end of the sling body (3) is rotatably connected to a bridge deck ear plate (1), and the top end of the bridge deck ear plate (1) is provided with a groove for rotatably connecting the connecting rod (2).

6. The fire and collision protection device for suspension bridge slings according to claim 1, characterized in that: The protection tubes (4) are distributed along the length direction of the sling body (3).

7. The fire and collision protection device for suspension bridge slings according to claim 1 is characterized in that: The outer side of the protection tube (4) is coated with fire retardant paint.

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