CN220099657U

CN220099657U - Fireproof inhaul cable for cable-stayed bridge

Info

Publication number: CN220099657U
Application number: CN202321588985.5U
Authority: CN
Inventors: 张勇; 张桂炎; 张涛; 金志军
Original assignee: Jiangsu Fast Rope Products Co ltd
Current assignee: Jiangsu Fast Rope Products Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2023-11-28
Anticipated expiration: 2033-06-21

Abstract

The utility model relates to the technical field of inhaul cables, and discloses: the utility model relates to a fireproof inhaul cable for a cable-stayed bridge, which comprises a inhaul cable body, wherein an inner sleeve is sleeved outside the inhaul cable body, a heat-insulating coating is coated on the outer side of the inner sleeve, a metal net is connected to the outer wall of the inner sleeve, an outer sleeve is fixedly connected to the outer wall of the metal net, and a fireproof coating is coated on the outer wall of the outer sleeve.

Description

Fireproof inhaul cable for cable-stayed bridge

Technical Field

The utility model relates to the technical field of inhaul cables, in particular to a fireproof inhaul cable for a cable-stayed bridge.

Background

One of the common failure modes of the cable in the use process is high-temperature failure, for example, when a fire disaster occurs, the performance of the cable body is drastically reduced due to high temperature generated by combustion of inflammable substances in the environment, so that the fireproof structure design is an important factor of the cable design.

In the prior art, the fireproof and heat-insulating effects can be exerted only by expanding the fireproof coating on the inner wall of the sheath tube, a larger expansion space is needed to be reserved, the long-time high-temperature environment is resisted, a thicker fireproof coating is needed, the thickness of the fireproof coating is larger, the coating is easy to fall off in the expansion process, and the cost is high; therefore, the solution in the prior art is to spray fireproof materials on the outer surface of the protective sleeve, so that the protective sleeve has a double-layer fireproof structure and function, and can resist long-time high-temperature fire, but the inner layer and the outer layer respectively adopt different fireproof structures, the structure is complex, the construction is complex, the efficiency is low, and the design of the fireproof structure can only meet single use occasions.

The retrieval finds that the authorized bulletin number is CN218712190U, and discloses a fireproof inhaul cable which comprises a cable body and a protective sleeve, wherein an inner protective layer with fireproof or heat insulation functions is arranged on the inner side surface of the protective sleeve, and an outer protective layer with fireproof or heat insulation functions is arranged on the outer side surface of the protective sleeve; the support net is arranged in the inner protective layer, or in the outer protective layer, or in both the inner protective layer and the outer protective layer according to the requirements of the fireproof layer; the cable body is arranged in the lumen of the protective sleeve, and a gap is reserved between the outer side surface of the cable body and the surface of the inner protective layer. The cable body and the protective structure are provided with two independent protective structures, so that the protective structure with fireproof outer layers and heat insulation inner layers or fireproof outer layers and heat insulation inner layers simultaneously is formed, the use requirements of different occasions are met, in addition, the protective structure is convenient for factory prefabrication, and the cable body and the protective structure can be installed on site. When the device is used, the following defects still exist:

when the device is specifically used, the sheath tube is only a single layer, and the condition of easy burning still exists on the fireproof effect, so that the problem of poor fireproof effect is caused.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a fireproof inhaul cable for a cable-stayed bridge, which improves the fireproof effect of the inhaul cable.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a fireproof inhaul cable for a cable-stayed bridge comprises a inhaul cable body, wherein an inner sleeve is sleeved outside the inhaul cable body, a heat-insulating coating is coated on the outer wall of the inner sleeve, a metal net is connected to the outer wall of the inner sleeve, an outer sleeve is fixedly connected to the outer wall of the metal net, and a fireproof coating is coated on the outer wall of the outer sleeve.

Further, the inner sleeve inner wall fixedly connected with a plurality of first support bars, the bottom of first support bar offsets with the cable body outer wall, and metal mesh inner wall fixedly connected with second support bar, the bottom and the inner sleeve outer wall fixed connection of second support bar.

Further, the inner sleeve and the outer sleeve are both formed by two arc plates, the outer walls of the two outer sleeves are fixedly connected with a plurality of groups of fixing blocks, the upper fixing block and the lower fixing block are symmetrically arranged, and the two opposite fixing blocks are fixedly connected through bolts.

Further, the two sides of one of the outer sleeves are fixedly connected with plugboards, and the two sides of the other outer sleeve are provided with slots corresponding to the plugboards.

Further, one end of the plugboard, which is positioned in the slot, is provided with a chamfer angle.

Further, two sides of the outer wall of the outer sleeve are connected with sealing boxes, and the sealing boxes are positioned outside the fixing blocks and the bolts.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the inner sleeve and the outer sleeve are sleeved on the outer side of the inhaul cable body, the fireproof effect of the inner sleeve and the outer sleeve is realized by utilizing the mutual matching of the heat-insulating coating on the outer side of the inner sleeve and the fireproof coating on the outer side of the outer sleeve, and the metal net is arranged, so that the overall fireproof effect is further enhanced.

Drawings

FIG. 1 is a schematic view of an overall three-dimensional structure of the present utility model;

FIG. 2 is a schematic perspective view of the utility model in a fully expanded configuration;

FIG. 3 is an enlarged perspective view of the structure of FIG. 2A;

fig. 4 is an enlarged perspective view of the structure of fig. 2B.

In the figure: 1. a guy cable body; 2. an inner sleeve; 201. a thermal barrier coating; 3. an outer sleeve; 301. a fireproof coating; 4. a seal box; 5. a first support bar; 6. inserting plate; 7. a fixed block; 8. a bolt; 9. a metal mesh; 10. a second support bar; 11. a slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

As shown in fig. 1 to 4, a fireproof cable for a cable-stayed bridge comprises a cable body 1, wherein an inner sleeve 2 is sleeved outside the cable body 1, a thermal insulation coating 201 is coated on the outer wall of the inner sleeve 2, a metal net 9 is connected to the outer wall of the inner sleeve 2, an outer sleeve 3 is fixedly connected to the outer wall of the metal net 9, and a fireproof coating 301 is coated on the outer wall of the outer sleeve 3.

As shown in fig. 1, the fireproof cable for the cable-stayed bridge of the present utility model is similar to the existing fireproof cable structure, and as disclosed in publication number CN218712190U, the main improvement point of the present utility model is to improve the fireproof effect of the cable, and as shown in fig. 1 to 4, when the fireproof cable for the cable-stayed bridge of the present utility model is used, the inner sleeve 2 and the outer sleeve 3 are sleeved on the outer side of the cable body 1, and the fireproof effect of the inner sleeve 2 and the outer sleeve 3 is achieved by the mutual cooperation of the heat-insulating coating 201 on the outer side of the inner sleeve 2 and the fireproof coating 301 on the outer side of the outer sleeve 3, and the metal mesh 9 is provided, so that the overall fireproof effect is further enhanced.

As shown in fig. 2 and fig. 4, the inner wall of the inner sleeve 2 is fixedly connected with a plurality of first supporting strips 5, the bottom of the first supporting strips 5 is propped against the outer wall of the inhaul cable body 1, the inner wall of the metal net 9 is fixedly connected with a second supporting strip 10, and the bottom of the second supporting strip 10 is fixedly connected with the outer wall of the inner sleeve 2.

Specifically, when the inner sleeve 2 and the outer sleeve 3 are connected with the guy rope body 1, the first supporting strip 5 on the inner wall of the inner sleeve 2 directly abuts against the outer wall of the guy rope body 1, and the second supporting strip 10 increases the distance between the metal net 9 and the inner sleeve 2, so that the fireproof effect is further enhanced.

As shown in fig. 2, 3 and 4, the inner sleeve 2 and the outer sleeve 3 are formed by two arc plates, the outer walls of the two outer sleeves 3 are fixedly connected with a plurality of groups of fixing blocks 7, the upper fixing block 7 and the lower fixing block 7 are symmetrically arranged, and the two opposite fixing blocks 7 are fixedly connected through bolts 8.

Through setting up inner skleeve 2 and outer sleeve 3 into two arc, and through fixed connection of fixed block 7 and bolt 8, can make holistic connection more convenient, also make inner skleeve 2 and outer sleeve 3 more convenient with being connected of cable body 1.

As shown in fig. 2 and 3, two sides of one of the outer sleeves 3 are fixedly connected with the plugboard 6, and two sides of the other outer sleeve 3 are provided with slots 11 corresponding to the plugboard 6.

Specifically, when the two outer sleeves 3 are connected with each other, the insertion plate 6 is inserted into the insertion groove 11, so that the outer sleeves 3 are more stable in connection.

As shown in fig. 3, the end of the insert plate 6 located in the slot 11 is provided with a chamfer. The chamfering arrangement can enable the connection between the plugboard 6 and the slot 11 to be smoother.

As shown in fig. 1 and 2, two sides of the outer wall of the outer sleeve 3 are connected with a sealing box 4, and the sealing box 4 is positioned outside the fixed block 7 and the bolt 8. Through the setting of seal box 4, can make fixed block 7 and bolt 8 can not expose outside, reduced the possibility of corrosion, and the connection between seal box 4 and the outer sleeve 3 can be connected through welding or joint's mode.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire prevention cable for cable-stayed bridge, includes cable body (1), its characterized in that, cable body (1) outside cover is equipped with inner skleeve (2), and inner skleeve (2) outer wall coating has thermal-insulated coating (201), and inner skleeve (2) outer wall connection has metal mesh (9), and metal mesh (9) outer wall fixedly connected with outer sleeve (3), outer sleeve (3) outer wall coating have fire prevention coating (301).

2. The fireproof inhaul cable for the cable-stayed bridge according to claim 1, wherein the inner wall of the inner sleeve (2) is fixedly connected with a plurality of first supporting strips (5), the bottoms of the first supporting strips (5) are propped against the outer wall of the inhaul cable body (1), the inner wall of the metal net (9) is fixedly connected with a second supporting strip (10), and the bottoms of the second supporting strips (10) are fixedly connected with the outer wall of the inner sleeve (2).

3. The fireproof inhaul cable for the cable-stayed bridge according to claim 1, wherein the inner sleeve (2) and the outer sleeve (3) are formed by two arc plates, the outer walls of the two outer sleeves (3) are fixedly connected with a plurality of groups of fixing blocks (7), the upper fixing block (7) and the lower fixing block (7) are symmetrically arranged, and the two opposite fixing blocks (7) are fixedly connected through bolts (8).

4. A fire protection cable for a cable-stayed bridge according to claim 3, characterized in that, the two sides of one of the outer sleeves (3) are fixedly connected with the plugboards (6), and the two sides of the other outer sleeve (3) are provided with the slots (11) corresponding to the plugboards (6).

5. A fire protection cable for a cable-stayed bridge according to claim 4, characterized in that the end of the insert plate (6) located in the slot (11) is provided with a chamfer.

6. A fire protection cable for a cable-stayed bridge according to claim 2, characterized in that the two sides of the outer wall of the outer sleeve (3) are connected with sealing boxes (4), the sealing boxes (4) are located outside the fixing blocks (7) and the bolts (8).