CN114277661A - Fire protection device of suspension bridge main cable clamp - Google Patents
Fire protection device of suspension bridge main cable clamp Download PDFInfo
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- CN114277661A CN114277661A CN202210086764.1A CN202210086764A CN114277661A CN 114277661 A CN114277661 A CN 114277661A CN 202210086764 A CN202210086764 A CN 202210086764A CN 114277661 A CN114277661 A CN 114277661A
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- insulating plate
- cable clamp
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- 239000000725 suspension Substances 0.000 title claims abstract description 40
- 238000005192 partition Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 30
- 239000004744 fabric Substances 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 abstract description 3
- 230000007480 spreading Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The invention discloses a fire-proof device of a main cable clamp of a suspension bridge.A fixed sleeve is fixed on a sling of the suspension bridge and is close to and below the cable clamp; the upper annular fire-proof plate is sleeved on the outer side of the sling and is fixedly connected with the fixed sleeve; the lower annular fire-insulating plate is sleeved outside the sling and is positioned below the upper annular fire-insulating plate; a plurality of steel cables are connected between the lower annular fire-insulating plate and the upper annular fire-insulating plate; the locking mechanism detachably connects the upper annular fire-insulating plate and the lower annular fire-insulating plate, and enables the steel cable to be in a coiling state; when the lower annular fire partition plate contacts a fire source, the locking mechanism releases the connection relationship between the lower annular fire partition plate and the upper annular fire partition plate, and the steel cable is in a tensioned state, so that the distance between the upper annular fire partition plate and the lower annular fire partition plate is increased. The distance of the flame cable clamp can be pushed, the speed of the flame rising can be reduced through the arrangement of the fire isolating plate, time is provided for fire fighting, the flame is effectively prevented from rapidly spreading to the main cable, and the cable clamp is prevented from being broken and damaged.
Description
Technical Field
The invention relates to the technical field of bridge fire prevention, in particular to a fire prevention device for a main cable clamp of a suspension bridge.
Background
China builds large cable-suspended structure bridges from the last 90 years, and the operation is nearly 30 years. With the development of economic society of China, the traffic flow of bridges is increased, vehicles for transporting flammable and combustible articles on the bridges are also increased continuously, and the fireproof problem of the bridges is gradually emphasized. For a cable system bridge, a cable is a main bearing component of the bridge, once the cable is damaged in a fire disaster, the traffic is blocked, huge economic loss is caused, and meanwhile, the safety of the bridge is greatly threatened.
The cable clamp is a key component of the suspension bridge and functions to connect the suspension cable to the main cable and to transfer the tension of the suspension cable to the main cable. Conventional fire protection is only aimed at the slings and main cable, however once the clips are blown, the structural damage caused by them is considerable. This also presents a new problem to be solved for bridge fire protection.
Therefore, how to provide a fire-proof device for a main cable clamp of a suspension bridge is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a fire-proof device for a main cable clamp of a suspension bridge, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fire protection device for a suspension bridge main cable clamp, comprising:
fixing a sleeve; the fixing sleeve is fixed on a sling of the suspension bridge, is close to the cable clamp and is positioned below the cable clamp;
an upper annular fire barrier; the upper annular fire-proof plate is sleeved on the outer side of the sling and is fixedly connected with the fixed sleeve;
a lower annular fire barrier; the lower annular fire-proof plate is sleeved outside the sling and is positioned below the upper annular fire-proof plate; a plurality of steel cables are connected between the lower annular fire-insulating plate and the upper annular fire-insulating plate;
a locking mechanism; the locking mechanism detachably connects the upper annular fire-proof plate and the lower annular fire-proof plate, and enables the steel cable to be in a coiling state; when the lower annular fire partition plate contacts a fire source, the locking mechanism relieves the connection relation between the lower annular fire partition plate and the upper annular fire partition plate, and enables the steel cable to be in a tensioned state, so that the distance between the upper annular fire partition plate and the lower annular fire partition plate is increased.
Through the technical scheme, the novel fireproof isolation structure overcomes the defect that fireproof paint is only coated on the cable clamp in the traditional technology, the novel fireproof isolation structure is added, when a fire disaster occurs, the distance of the flame cable clamp can be pushed, the flame rising speed can be reduced through the arrangement of the fire partition plate, time is provided for fire fighting, the flame can be effectively prevented from rapidly spreading to the main cable, and meanwhile, the cable clamp can be prevented from being broken to cause structural damage.
Preferably, in the fire protection device of suspension bridge main push-towing rope clamp, the outside border of annular fire baffle has the outer bar division board of polylith articulated down, outer bar division board is kept away from annular fire baffle's one end down with go up annular fire baffle passes through the shear pin and connects. The invention adds the strip-shaped isolation plate structure which can be unfolded, and after the upper fire baffle plate and the lower fire baffle plate are separated, the shearing pin can be cut off by gravity, the isolation plate is unfolded, and the isolation effect is improved.
Preferably, in the fire protection device for the main cable clamp of the suspension bridge, the top surface of the lower annular fire baffle, which is close to the outer side edge, is circumferentially hinged with a plurality of inner strip-shaped partition plates, and one ends of the inner strip-shaped partition plates, which are far away from the lower annular fire baffle, are abutted against the top ends of the outer strip-shaped partition plates; the inner strip-shaped isolation plates and the outer strip-shaped isolation plates are arranged in a staggered mode. The inner strip-shaped isolation plate can fill the gap of the outer strip-shaped isolation plate, and the fire source isolation of a larger area is realized.
Preferably, in the fire-proof device for a main cable clamp of a suspension bridge, a corrugated-pipe-shaped fire-proof cloth cover is connected between the upper annular fire-proof plate and the lower annular fire-proof plate; the fire-proof cloth sleeve is sleeved outside the sling; and fire extinguishing dry powder is filled between the fire insulation cloth sleeve and the sling. The fire-isolating cloth sleeve can quickly isolate and extinguish the fire between the upper annular fire-isolating plate and the lower annular fire-isolating plate when being stretched, and meanwhile, the fire-extinguishing cloth sleeve is assisted by fire-extinguishing dry powder, can be favorable for extinguishing fire and prevents the fire from remaining after isolation.
Preferably, in the fire-proof device for a main cable clamp of a suspension bridge, gaps are respectively formed between the upper annular fire-insulating plate and the sling and between the lower annular fire-insulating plate and the sling. Can provide space for the ejection of the fire extinguishing dry powder and the stretching of the fire-proof cloth sleeve.
Preferably, in the fire-proof device for a main cable clamp of a suspension bridge, the locking mechanism comprises a temperature sensor; the temperature sensor is used for sensing a high-temperature signal and removing the connection relation between the lower annular fire-proof plate and the upper annular fire-proof plate according to the high-temperature signal. The unlocking structure provided by the invention avoids a conventional mechanical structure, adopts intelligent induction control, has higher unlocking sensitivity, can quickly react when the temperature suddenly rises, and has a better use effect.
Preferably, in the fire protection device for a suspension bridge main cable clamp, the locking mechanism further includes a screw, a threaded nut, a servo motor and a driving gear; the screw rods are vertically arranged, the bottom ends of the screw rods are fixed on the top surfaces of the lower annular fire-proof plates, and the top ends of the screw rods penetrate through the upper annular fire-proof plates; the insection nut is in threaded connection with the top end of the screw rod and tightly propped against the top surface of the upper annular fire-isolating plate; the servo motor is fixed on the top surface of the upper annular fire-isolating plate through a support and can be started according to the high-temperature signal sensed by the temperature sensor; the driving gear is connected with a power output shaft of the servo motor and meshed with the outer side insections of the insection nut. Above structure can make insection nut and screw rod quickly separating through servo motor's rotation control for upper and lower annular fire baffle can be under the effect of gravity quickly separating.
Preferably, in the fire protection device for a suspension bridge main cable clamp, the locking mechanism further includes a shielding case fastened to the outer sides of the screw, the threaded nut, the servo motor and the driving gear; the top surface of the isolation cover is provided with a cover body. The cage can prevent screw rod and insection nut from taking place the corrosion, can open the dropwise add that the lid realized lubricating oil moreover.
Preferably, in the fire-proof device for the main cable clamp of the suspension bridge, the fire-proof device is sleeved at the top end of the sling before the sling is connected with the cable clamp. The installation is convenient, and the cover is convenient to be arranged on the sling.
Preferably, in the fire-proof device for a main cable clamp of a suspension bridge, the fixing sleeve is tightly fixed on the suspension cable through a bolt. The connection is simple and the structure is stable.
Through the technical scheme, compared with the prior art, the invention discloses the fireproof device of the main cable clamp of the suspension bridge, and the fireproof device has the following beneficial effects:
1. the novel fireproof isolation structure overcomes the defect that fireproof paint is only coated on the cable clamp in the prior art, the novel fireproof isolation structure is added, when a fire disaster occurs, the distance of the flame cable clamp can be pushed, the rising speed of the flame can be reduced through the arrangement of the fire isolation plate, time is provided for fire fighting, the flame can be effectively prevented from rapidly spreading to the main cable, and meanwhile, the cable clamp can be prevented from being broken to cause structural damage.
2. According to the invention, the expandable strip-shaped isolation plate structure is added, after the upper fire baffle plate and the lower fire baffle plate are separated, the shearing pin can be cut off by gravity, the isolation plate is expanded, the isolation effect is improved, the inner strip-shaped isolation plate can fill the gap of the outer strip-shaped isolation plate, and the fire source isolation of a larger area is realized.
3. The fire-insulating cloth sleeve can quickly isolate and extinguish the fire between the upper annular fire-insulating plate and the lower annular fire-insulating plate when being stretched, and meanwhile, the fire-extinguishing cloth sleeve is assisted by fire-extinguishing dry powder, so that the fire can be extinguished favorably, and the fire still stays after isolation.
4. The unlocking structure provided by the invention avoids a conventional mechanical structure, adopts intelligent induction control, has higher unlocking sensitivity, can quickly react when the temperature suddenly rises, and has a better use effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a fire protection apparatus according to the present invention in an unused state;
FIG. 2 is a schematic view of the fire protection apparatus of the present invention in a working state
FIG. 3 is a perspective view of the inner and outer barrier ribs in an expanded state.
Wherein:
1-fixing a sleeve;
2-upper ring fire-proof plate;
21-shear pins;
3-lower annular fire-proof plate;
31-outer strip-shaped insulation boards; 32-inner strip-shaped isolation plates;
4-a locking mechanism;
41-temperature sensor; 42-screw rod; 43-a toothed nut; 44-a servo motor; 45-a drive gear;
46-a shielding case; 461-cover;
5-a sling;
6-steel cable;
7-fire-proof cloth cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the invention discloses a fire protection device for a main cable clamp of a suspension bridge, which comprises:
a fixed sleeve 1; the fixed sleeve 1 is fixed on a sling 5 of the suspension bridge, is close to the cable clamp and is positioned below the cable clamp;
an upper annular fire barrier 2; the upper annular fire-insulating plate 2 is sleeved outside the sling 5 and is fixedly connected with the fixed sleeve 1;
a lower annular fire barrier 3; the lower annular fire-insulating plate 3 is sleeved outside the sling 5 and is positioned below the upper annular fire-insulating plate 2; a plurality of steel cables 6 are connected between the lower annular fire-insulating plate 3 and the upper annular fire-insulating plate 2;
a locking mechanism 4; the locking mechanism 4 detachably connects the upper annular fire-insulating plate 2 and the lower annular fire-insulating plate 3, and enables the steel cable 6 to be in a coiling state; when the lower annular fire partition plate 3 contacts a fire source, the locking mechanism 4 can release the connection relation between the lower annular fire partition plate 3 and the upper annular fire partition plate 2, and the steel cable 6 is in a tensioned state, so that the distance between the upper annular fire partition plate 2 and the lower annular fire partition plate 3 is increased.
In order to further optimize the technical scheme, the outer side edge of the lower annular fire partition plate 3 is hinged with a plurality of outer strip-shaped partition plates 31, and one ends, far away from the lower annular fire partition plate 3, of the outer strip-shaped partition plates 31 are connected with the upper annular fire partition plate through the shearing pins 21 through the shearing pins 2.
In order to further optimize the technical scheme, a plurality of inner strip-shaped isolation plates 31 are circumferentially hinged to the top surface of the lower annular fire partition plate 3 close to the outer side edge, and one ends, far away from the lower annular fire partition plate 3, of the inner strip-shaped isolation plates 31 are abutted to the top ends of the outer strip-shaped isolation plates 32; the inner strip-shaped separators 32 are staggered from the outer strip-shaped separators 31.
In order to further optimize the technical scheme, a corrugated-pipe-shaped fire-insulating cloth sleeve 7 is connected between the upper annular fire-insulating plate 2 and the lower annular fire-insulating plate 3; the fire-proof cloth cover 7 is sleeved outside the sling 5; fire extinguishing dry powder is filled between the fire-proof cloth cover 7 and the sling 5.
In order to further optimize the technical scheme, gaps are reserved between the upper annular fire partition plate 2 and the sling 5 and between the lower annular fire partition plate 3 and the sling 5.
In order to further optimize the above technical solution, the locking mechanism 4 comprises a temperature sensor 41; the temperature sensor 41 is used for sensing a high temperature signal and releasing the connection relationship between the lower annular fire-insulating plate 3 and the upper annular fire-insulating plate 2 according to the high temperature signal 41.
In order to further optimize the above technical solution, the locking mechanism 4 further comprises a screw 42, a threaded nut 43, a servo motor 44 and a driving gear 45; the screw rods 42 are vertically arranged, the bottom ends of the screw rods 42 are fixed on the top surface of the lower annular fire-insulating plate 3, and the top ends of the screw rods 42 penetrate through the upper annular fire-insulating plate 2; the insection nut 43 is connected with the top end of the screw rod 42 in a threaded manner and tightly props against the top surface of the upper annular fire-insulating plate 2; the servo motor 44 is fixed on the top surface of the upper annular fire-isolating plate 2 through a bracket, and the servo motor 44 can be started according to a high-temperature signal sensed by the temperature sensor 41; the driving gear 45 is connected with a power output shaft of the servo motor 44 and is engaged with the outer insection of the insection nut 43.
In order to further optimize the above technical solution, the locking mechanism 4 further comprises a shielding case 46 buckled outside the screw rod 42, the threaded nut 43, the servo motor 44 and the driving gear 45; the top surface of the isolation cover 46 has a cover 461.
In order to further optimize the technical scheme, the fireproof device is sleeved at the top end of the sling 5 before the sling 5 is connected with the cable clamp.
In order to further optimize the technical scheme, the fixing sleeve 1 is tightly fixed on the sling 5 through a bolt.
The above further optimized technical solutions can be combined arbitrarily under reasonable circumstances to form different embodiments.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A fire protection device of a main cable clamp of a suspension bridge is characterized by comprising:
a fixed sleeve (1); the fixing sleeve (1) is fixed on a sling (5) of the suspension bridge, is close to the cable clamp and is positioned below the cable clamp;
an upper annular fire barrier (2); the upper annular fire-proof plate (2) is sleeved on the outer side of the sling (5) and is fixedly connected with the fixed sleeve (1);
a lower annular fire barrier (3); the lower annular fire-insulating plate (3) is sleeved outside the sling (5) and is positioned below the upper annular fire-insulating plate (2); a plurality of steel cables (6) are connected between the lower annular fire-insulating plate (3) and the upper annular fire-insulating plate (2);
a locking mechanism (4); the locking mechanism (4) detachably connects the upper annular fire-insulating plate (2) and the lower annular fire-insulating plate (3), and enables the steel cable (6) to be in a coiling state; when lower annular fire baffle (3) contact the source of a fire, locking mechanism (4) can relieve annular fire baffle (3) down with the relation of connection of last annular fire baffle (2) to make cable wire (6) are in taut state, realize go up annular fire baffle (2) with the interval increase of lower annular fire baffle (3).
2. The fire-proof device for the main cable clamp of the suspension bridge according to claim 1, wherein the outer side edge of the lower annular fire-insulating plate (3) is hinged with a plurality of outer strip-shaped insulating plates (31), and one ends of the outer strip-shaped insulating plates (31) far away from the lower annular fire-insulating plate (3) are connected with the upper annular fire-insulating plate through (2) shear pins (21).
3. The fire-proof device for the main cable clamp of the suspension bridge according to claim 2, wherein the top surface of the lower annular fire-insulating plate (3) close to the outer side edge is circumferentially hinged with a plurality of inner strip-shaped insulating plates (31), and one ends of the inner strip-shaped insulating plates (31) far away from the lower annular fire-insulating plate (3) abut against the top ends of the outer strip-shaped insulating plates (32); the inner strip-shaped isolation plates (32) and the outer strip-shaped isolation plates (31) are arranged in a staggered mode.
4. A fire-proof device of a main cable clamp of a suspension bridge according to claim 1, characterized in that a corrugated-pipe-shaped fire-insulating cloth cover (7) is connected between the upper annular fire-insulating plate (2) and the lower annular fire-insulating plate (3); the fire-proof cloth sleeve (7) is sleeved outside the sling (5); and fire extinguishing dry powder is filled between the fire-proof cloth sleeve (7) and the sling (5).
5. A fire protection device for a main cable clamp of a suspension bridge according to claim 4, characterized in that there is a gap between the upper annular fire barrier (2) and the lower annular fire barrier (3) and the suspension cable (5).
6. A fire protection device for a suspension bridge main cable clamp according to any one of claims 1-5, characterized in that the locking mechanism (4) comprises a temperature sensor (41); the temperature sensor (41) is used for sensing a high-temperature signal and releasing the connection relation between the lower annular fire-insulating plate (3) and the upper annular fire-insulating plate (2) according to the high-temperature signal (41).
7. A fire protection device of a suspension bridge main cable clamp according to claim 6, wherein the locking mechanism (4) further comprises a screw (42), a threaded nut (43), a servo motor (44) and a driving gear (45); the screw rods (42) are vertically arranged, the bottom ends of the screw rods (42) are fixed on the top surface of the lower annular fire partition plate (3), and the top ends of the screw rods (42) penetrate through the upper annular fire partition plate (2); the insection nut (43) is in threaded connection with the top end of the screw rod (42) and tightly props against the top surface of the upper annular fire-insulating plate (2); the servo motor (44) is fixed on the top surface of the upper annular fire-insulating plate (2) through a bracket, and the servo motor (44) can be started according to the high-temperature signal sensed by the temperature sensor (41); the driving gear (45) is connected with a power output shaft of the servo motor (44) and meshed with the outer insection of the insection nut (43).
8. The fire-proof device of a main cable clamp of a suspension bridge according to claim 7, characterized in that the locking mechanism (4) further comprises a shielding case (46) fastened outside the screw (42), the threaded nut (43), the servo motor (44) and the driving gear (45); the top surface of the isolation cover (46) is provided with a cover body (461).
9. A fire protection device for a main cable clamp of a suspension bridge according to claim 1, characterized in that the fire protection device is placed over the top end of the suspension cable (5) before the suspension cable (5) is connected to the clamp.
10. A fire-protection arrangement for a main cable clamp of a suspension bridge according to claim 1, characterized in that the fixing sheath (1) is fastened to the suspension cable (5) by bolting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086764.1A CN114277661B (en) | 2022-01-25 | 2022-01-25 | Fireproof device of suspension bridge main cable clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086764.1A CN114277661B (en) | 2022-01-25 | 2022-01-25 | Fireproof device of suspension bridge main cable clamp |
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| CN114277661A true CN114277661A (en) | 2022-04-05 |
| CN114277661B CN114277661B (en) | 2023-12-29 |
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