Main cable device and bridge sealing fireproof flame-retardant system
By wrapping the steel cables of suspension bridges with flame-retardant protective strips and fireproof insulation layers, the problem of steel cables in suspension bridges being prone to failure in fires has been solved, achieving fireproof, flame-retardant, and heat-insulating effects and ensuring bridge safety.
Patent Information
- Application Number
- CN202520523217.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-24
AI Technical Summary
In existing suspension bridges, the steel cables are only wrapped with waterproof adhesive, lacking flame-retardant, fireproof, and heat-insulating protection, which makes the important load-bearing structures of the steel cables prone to failure in the event of a fire.
The steel rope is wrapped with a first flame-retardant protective belt, a fireproof insulation layer group, and a second flame-retardant protective belt in sequence. Nano-aerogel or basalt fireproof layer is used as the insulation layer, and it is fixed with clamps and locking clips.
It effectively prevents steel ropes from failing in a fire, provides fireproof, flame-retardant, and heat-insulating protection, ensures the safety of the bridge structure, and facilitates construction and maintenance.
Smart Images
Figure CN223907338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bridge fire prevention structure technical field especially, it relates to a kind of main cable device and bridge sealing fireproof flame-retardant system. BACKGROUND
[0002] Suspension bridge refers to the steel rope as the main load-bearing component of upper structure, which is suspended by cable tower and anchored on both sides or both ends of the bridge. The geometry of the steel rope is determined by the force balance condition, which is generally close to a parabola. Many hangers are hung from the steel rope, and the bridge deck is hung. A stiffening beam is usually arranged between the bridge deck and the hanger to form a composite system with the steel rope to reduce the deflection deformation caused by the load.
[0003] However, the steel rope in the existing suspension bridge is formed by winding multiple high-strength steel wires. The cross section of the steel rope is circular. The outer layer of the steel rope is only wrapped with a layer of waterproof glue without setting a flame-retardant fireproof insulation protective layer. When a fire hazard occurs in the suspension bridge, the steel rope cannot play a good fireproof effect, which can easily lead to failure of some important load-bearing structures in the suspension bridge. SUMMARY
[0004] The utility model aims at providing a kind of main cable device and bridge sealing fireproof flame-retardant system, to solve the technical problem that the steel rope in the existing suspension bridge is formed by winding multiple high-strength steel wires. The outer layer of the steel rope is only wrapped with a layer of waterproof glue without setting a flame-retardant fireproof insulation protective layer. When a fire hazard occurs in the suspension bridge, the steel rope cannot play a good fireproof effect, which can easily lead to failure of some important load-bearing structures in the suspension bridge.
[0005] The utility model is realized as follows: a kind of main cable device, including cable, the cable includes:
[0006] Steel rope;
[0007] First flame-retardant protective tape, the first flame-retardant protective tape is wrapped outside the steel rope;
[0008] Fireproof insulation layer group, the fireproof insulation layer group is wrapped outside the first flame-retardant protective tape;
[0009] Second flame-retardant protective tape, the second flame-retardant protective tape is wrapped outside the fireproof insulation layer group.
[0010] Optionally, the fireproof insulation layer group includes first fireproof insulation layer and second fireproof insulation layer, the first fireproof insulation layer is wrapped outside the first flame-retardant protective tape, and the second fireproof insulation layer is wrapped outside the first fireproof insulation layer.
[0011] Optionally, the first fireproof insulation layer is nano aerogel fireproof layer or basalt fireproof layer or high-silica fiber layer.
[0012] Optionally, the second fireproof insulation layer is a nano-aerogel fireproof layer, a basalt fireproof layer or a high-silica fiber layer.
[0013] Optionally, the first fire-retardant protective tape is a CSM wrapping tape or a PVF tape.
[0014] Optionally, the second fire-retardant protective tape is a CSM wrapping tape or a PVF tape.
[0015] Optionally, the main cable device further comprises two clamps for preventing the second fire-retardant protective tape from loosening, and the two clamps are respectively arranged on the left and right sides of the cable and are respectively arranged on the two ends of the second fire-retardant protective tape.
[0016] Optionally, the main cable device further comprises at least one lock clamp, the lock clamp comprises a first lock shell and a second lock shell, the first lock shell and the second lock shell are respectively arranged on the front and back sides of the cable, the first lock shell is provided with a plurality of through holes, the second lock shell is provided with a plurality of threaded holes, the fasteners are connected with the threaded holes through the corresponding through holes, and the outer side walls of the first lock shell and the second lock shell are respectively provided with a limiting block, and the limiting block is provided with a limiting groove matched with the cable.
[0017] Optionally, one end of the limiting block is arranged close to the top of the lock clamp, the other end of the limiting block is arranged close to the middle of the lock clamp, and the width of the limiting groove gradually decreases from the top of the limiting block to the bottom of the limiting block.
[0018] The utility model also provides a bridge sealing fire-retardant system, including the main cable device as above-mentioned.
[0019] The utility model discloses a first fire-retardant protective tape, a fireproof insulation layer group and a second fire-retardant protective tape are sequentially wrapped on the outer side of the steel rope, the first fire-retardant protective tape can protect and seal the steel rope, the fireproof insulation layer group can realize fire-retardant and heat-insulating, protect the steel rope in a certain temperature influence range, have good fireproof effect, avoid the performance failure of the important stress structure of the steel rope in the bridge when the fire danger occurs, the second fire-retardant protective tape can protect the fireproof insulation layer group from rain and sun and other weather resistance, effectively guarantee the safe use of the bridge, and the main cable device is suitable for wide range popularization. ACCURACY
[0020] Figure 1 It is the partial perspective view of the cable of the utility model embodiment;
[0021] Figure 2 It is Figure 1 the section view along A-A line in figure 6;
[0022] Figure 3 is a part perspective view of the main cable device.
[0023] Reference signs:
[0024] 10, cable; 11, steel rope; 12, first flame-retardant protective tape; 13, fireproof insulation layer set; 131, first fireproof insulation layer; 132, second fireproof insulation layer; 14, second flame-retardant protective tape; 20, lock clamp; 21, first lock shell; 211, limiting block; 212, limiting groove; 22, fastener. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0026] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element.
[0027] It should also be noted that the left, right, up, down and other orientation terms in the present embodiment are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.
[0028] As shown in Figures 1 to 3 The utility model discloses a kind of main cable devices, and main cable device is mainly applied to bridge, and main cable device includes cable 10, cable 10 includes steel rope 11, first flame-retardant protective tape 12, fireproof insulation layer set 13 and second flame-retardant protective tape 14, first flame-retardant protective tape 12 is wrapped in the outside of steel rope 11, first flame-retardant protective tape 12 can be sealed to steel rope 11 protection, fireproof insulation layer set 13 is wrapped in the outside of first flame-retardant protective tape 12, fireproof insulation layer set 13 can realize fire-retardant heat insulation, protect steel rope 11 in certain temperature influence range, play good fireproof effect, avoid the case that steel rope 11 part important stress structure in bridge fails when fire hazard occurs, second flame-retardant protective tape 14 is wrapped in the outside of fireproof insulation layer set 13, and second flame-retardant protective tape 14 carries out weather resistance protection such as rainproof and sun protection to fireproof insulation layer set 13.
[0029] In the embodiment, the fireproof insulation layer set 13 includes a first fireproof insulation layer 131 and a second fireproof insulation layer 132, the first fireproof insulation layer 131 is wrapped outside the first fire-retardant protective tape 12, and the second fireproof insulation layer 132 is wrapped outside the first fireproof insulation layer 131. The fireproof insulation layer set 13 has two fireproof insulation layers, so that the important force-bearing structures on the bridge are prevented from performance attenuation due to fire accidents, the safe use of the bridge is effectively ensured, and meanwhile, the first fireproof insulation layer 131 and the second fireproof insulation layer 132 are constructed in layers, so that the construction efficiency is effectively improved, and the later maintenance is facilitated.
[0030] In some embodiments, the steel rope 11 is formed by winding a plurality of high-strength steel wires, the cross section of the steel rope 11 is circular, and the steel rope 11 can bear pulling and gravity.
[0031] In some embodiments, the first fire-retardant protective tape 12 is a CSM wrapping tape or a PVF tape, the CSM wrapping tape is also called a chlorosulfonated polyethylene tape, the PVF tape is also called a polyvinyl fluoride adhesive tape, and the first fire-retardant protective tape 12 can be applied with certain external force during winding to protect and seal the steel rope 11.
[0032] In some embodiments, the first fireproof insulation layer 131 is a nano aerogel fireproof layer or a basalt fireproof layer or a high-silica fiber layer, and the first fireproof insulation layer 131 cannot be applied with too large external force during winding to avoid being pulled off.
[0033] In some embodiments, the second fireproof insulation layer 132 is a nano aerogel fireproof layer or a basalt fireproof layer or a high-silica fiber layer, and the second fireproof insulation layer 132 cannot be applied with too large external force during winding to avoid being pulled off.
[0034] In some embodiments, the second fire-retardant protective tape 14 is a CSM wrapping tape or a PVF tape, and the second fire-retardant protective tape 14 can be applied with certain external force during winding to meet the overall appearance design requirements of the bridge.
[0035] In the embodiment, the main cable device further includes two clamps, the two clamps are respectively installed on the outer walls on the left and right sides of the cable 10, and the two clamps are respectively covered on the end heads at the two ends of the second fire-retardant protective tape 14 to prevent the second fire-retardant protective tape 14 from being loosened from the fireproof insulation layer set 13 after the cable 10 is fixed.
[0036] The main cable device further comprises at least one locking clamp 20, the locking clamp 20 comprising a first locking shell 21, a second locking shell and a plurality of fasteners 22, the first locking shell 21 and the second locking shell being clamped on the front and back sides of the cable 10 respectively, the upper and lower sides of the first locking shell 21 being provided with a plurality of through holes, the upper and lower sides of the second locking shell being provided with a plurality of threaded holes, the fasteners 22 being connected with the threaded holes after passing through the corresponding through holes, the outer side walls of the first locking shell 21 and the second locking shell being provided with a vertical limiting block 211, the limiting block 211 being provided with a limiting groove 212 matched with the cable-stayed cable, one end of the cable-stayed cable being hung on the bridge top beam and the other end being hung on the locking clamp 20 to lift the cable 10, the cable-stayed cable being partially located in the two limiting grooves 212, the two limiting grooves 212 can avoid the cable-stayed cable from being separated from the locking clamp 20, and the fasteners 22 are screws.
[0037] One end of the limiting block 211 is located close to the top of the locking clamp 20, the other end of the limiting block 211 is located close to the middle of the locking clamp 20, the width of the limiting groove 212 gradually decreases from the top of the limiting block 211 to the bottom of the limiting block 211 to increase the inclination angle of the cable-stayed cable on the locking clamp 20, and the limiting block 211 can rotate at a certain angle relative to the corresponding first locking shell 21 or the second locking shell to adjust the inclination direction of the limiting groove 212, of course, the limiting groove 212 can also be inclined during processing.
[0038] The utility model discloses still a kind of bridge sealing fireproof flame-retardant system, including the main cable device as described above.
[0039] As described above, the first flame-retardant protective tape 12 can protect and seal the steel rope 11, the fireproof insulation layer group 13 can achieve fireproofing and flame-retardant insulation, protecting the steel rope 11 within a certain temperature range, providing good fireproofing effect, avoiding the failure of some important load-bearing structures of the steel rope 11 in the bridge during a fire hazard, and the second flame-retardant protective tape 14 can provide weather resistance protection such as rain and sun protection for the fireproof insulation layer group 13, so that the main cable device is suitable for wide application.
[0040] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement or improvement made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A main cable arrangement comprising a cable, characterized in that The cable includes: a steel rope; a first fire-retardant protective tape wrapped outside the steel rope; a fireproof insulation layer set wrapped outside the first fire-retardant protective tape; a second fire-retardant protective tape wrapped outside the fireproof insulation layer set.
2. The main cable arrangement of claim 1, wherein The fireproof insulation layer set includes a first fireproof insulation layer wrapped outside the first fire-retardant protective tape and a second fireproof insulation layer wrapped outside the first fireproof insulation layer.
3. The main cable arrangement of claim 2, wherein, The first fireproof insulation layer is a nano-aerogel fireproof layer, a basalt fireproof layer or a high-silica fiber layer.
4. The main cable installation of claim 2, wherein, The second fireproof insulation layer is a nano-aerogel fireproof layer, a basalt fireproof layer or a high-silica fiber layer.
5. The main cable apparatus of claim 1, wherein, The first fire-retardant protective tape is a CSM wrapping tape or a PVF tape.
6. The main cable apparatus of claim 1, wherein, The second fire-retardant protective tape is a CSM wrapping tape or a PVF tape.
7. The main cable apparatus of claim 1, wherein, The main cable device further includes two clamps each for preventing the second fire-retardant protective tape from loosening, the two clamps being respectively installed on left and right sides of the cable and respectively covering two ends of the second fire-retardant protective tape.
8. The main cable apparatus of claim 1, wherein, The main cable device further includes at least one lock clamp, the lock clamp including a first lock shell, a second lock shell and a plurality of fasteners, the first lock shell and the second lock shell being respectively clamped on front and back sides of the cable, the first lock shell being provided with a plurality of through holes, the second lock shell being provided with a plurality of threaded holes, the fasteners being connected with the threaded holes after passing through the corresponding through holes, outer walls of the first lock shell and the second lock shell each being provided with a limiting block, the limiting block being provided with a limiting groove matched with the cable.
9. A main cable arrangement according to claim 8, characterized in that One end of the limiting block is arranged close to a top position of the lock clamp and the other end is arranged close to a middle position of the lock clamp, a width of the limiting groove gradually decreasing from the top of the limiting block to the bottom of the limiting block.
10. A bridge sealing fireproofing flame retardant system characterized by, The main cable device as claimed in any one of claims 1-9.