阅读说明：本技术 一种防火及防爆拉索 (Fireproof and explosion-proof inhaul cable ) 是由 庞锐剑 覃磊 邹易清 雷欢 黄芳玮 韦耀淋 朱永权 李华萍 黎睦汉 张峰 蒋立军 于 2019-08-07 设计创作，主要内容包括：本发明公开了一种防火及防爆拉索,包括索体、第一防火层、第二防火层、钢管、防水罩、防爆管；防水罩的两端分别连接钢管和防爆管的一端,防爆管的另一端与桥梁连接；索体依次穿过防爆管、防水罩并伸入钢管内；位于防水罩以上的第一防火层设在索体与钢管之间；位于防水罩及其以下的第二防火层设在索体的表面。本发明公开的一种防火及防爆拉索,在不改变拉索原有功能的基础上为拉索同时提供了防火防爆功能,且防护层与拉索相互分开,同时防火层与防爆层也相互分开,便于更换和维护；可用于新桥或旧桥拉索施工,也可用于长距离斜拉桥拉索。(The invention discloses a fireproof and explosion-proof inhaul cable which comprises a cable body, a first fireproof layer, a second fireproof layer, a steel pipe, a waterproof cover and an explosion-proof pipe, wherein the first fireproof layer is arranged on the cable body; two ends of the waterproof cover are respectively connected with the steel pipe and one end of the explosion-proof pipe, and the other end of the explosion-proof pipe is connected with the bridge; the cable body sequentially passes through the explosion-proof pipe and the waterproof cover and extends into the steel pipe; the first fireproof layer positioned above the waterproof cover is arranged between the cable body and the steel pipe; the second fireproof layer positioned below the waterproof cover is arranged on the surface of the cable body. According to the fireproof and explosion-proof inhaul cable disclosed by the invention, the fireproof and explosion-proof functions are provided for the inhaul cable on the basis of not changing the original functions of the inhaul cable, the protective layer and the inhaul cable are separated from each other, and the fireproof layer and the explosion-proof layer are also separated from each other, so that the inhaul cable is convenient to replace and maintain; the cable can be used for the construction of new or old bridge cables and can also be used for long-distance cable-stayed bridge cables.)

1. A fireproof and explosion-proof inhaul cable is characterized by comprising a cable body (1), a first fireproof layer (31), a second fireproof layer (32), a steel pipe (4), a waterproof cover (5) and an explosion-proof pipe (7);

two ends of the waterproof cover (5) are respectively connected with the steel pipe (4) and one end of the explosion-proof pipe (7), and the other end of the explosion-proof pipe (7) is connected with the bridge (10); the cable body (1) sequentially penetrates through the explosion-proof pipe (7) and the waterproof cover (5) and extends into the steel pipe (4);

the first fireproof layer (31) positioned above the waterproof cover (5) is arranged between the cable body (1) and the steel pipe (4); the second fireproof layer (32) positioned on the waterproof cover (5) and below the waterproof cover is arranged on the surface of the cable body (1).

2. A fire and explosion protection cable according to claim 1, characterized in that the first fire resistant layer (31) is located on the surface of the cable body (1).

3. A fire and explosion protection cable as claimed in claim 1, characterized in that it further comprises a HDPE sheath (2), said HDPE sheath (2) is located between the steel pipe (4) and the cable body (1) and is connected with a waterproof cover (5); the first fireproof layer (31) is positioned on the surface of the HDPE jacket (2).

4. A fire and explosion protection cable according to claim 1, further comprising a damper (6), wherein the damper (6) is located inside the waterproof case (5), connected to the explosion protection pipe (7), and sleeved outside the second fireproof layer (32).

5. A fire and explosion protection inhaul cable according to claim 4, wherein the shock absorber (6) and the explosion protection pipe (7) are connected through a support and a bolt, and two ends of the support are respectively connected with the shock absorber (6) and the explosion protection pipe (7) through a bolt.

6. A fire and explosion protection cable according to claim 1, characterized in that the bridge (10) comprises a pre-buried pipe (8), and the explosion protection pipe (7) is connected with the bridge (10) through the pre-buried pipe (8).

7. A fire and explosion protection cable according to claim 1, characterized in that the bridge (10) comprises a pre-buried pipe (8) and a concrete block (9) fixing the pre-buried pipe (8), and the explosion protection pipe (7) is connected with the bridge (10) through the concrete block (9).

8. A fire and explosion protection cable according to claim 1, wherein the explosion protection tube (7) is connected with the bridge (10) by one of welding, riveting, screwing and nesting.

9. A fire and explosion protection cable according to claim 1, wherein the steel pipe (4) is connected with the waterproof cover (5) by one of welding, riveting, screwing and nesting.

10. A fire and explosion protection stay according to claim 1, characterized in that the cable body (1) is one of a steel strand cable body or a steel wire cable body.

Technical Field

The invention relates to a guy cable, in particular to a fireproof and explosion-proof guy cable.

Background

At present, most bridge accidents occur in the damage of guys caused by fire or explosion, and the guys have no corresponding technical means for the safety protection of the fire and the explosion at the same time.

For example, chinese patent CN207259963U discloses a fireproof cable, which includes a cable, an inner lining pipe, a fireproof layer and an outer lining pipe, wherein the fireproof layer is disposed between the inner lining pipe and the outer lining pipe; the fireproof layer is one of filling type fireproof materials, binding fireproof fillers or fireproof coatings, and the inhaul cable only has a fireproof function. Chinese patent CN208395669U discloses a novel explosion impact resistant cable, which comprises a cable and a supporting tube nested with the cable, wherein the inner wall and the outer wall of the supporting tube are provided with an explosion protection layer, the supporting tube can be nested with an outer protecting tube, and the cable only has an explosion protection function. Therefore, the guy cable in the prior art only has one of fireproof or explosion-proof functions, and the fireproof or explosion-proof structure can only be used on a guy cable of a new bridge, and the fireproof or explosion-proof function cannot be directly added on a conventional guy cable of an old bridge.

Disclosure of Invention

Aiming at the problems, the invention provides a fireproof and explosion-proof inhaul cable, aiming at solving the problems that the existing inhaul cable only has one of fireproof or explosion-proof functions, and the fireproof or explosion-proof function can not be directly added on the conventional inhaul cable of the old bridge.

The invention adopts the following technical scheme to realize the purpose:

a fireproof and explosion-proof inhaul cable comprises a cable body, a first fireproof layer, a second fireproof layer, a steel pipe, a waterproof cover and an explosion-proof pipe; two ends of the waterproof cover are respectively connected with the steel pipe and one end of the explosion-proof pipe, and the other end of the explosion-proof pipe is connected with the bridge; the cable body sequentially penetrates through the explosion-proof pipe and the waterproof cover and extends into the steel pipe; the first fireproof layer positioned above the waterproof cover is arranged between the cable body and the steel pipe; the second fireproof layer positioned below the waterproof cover is arranged on the surface of the cable body. The fireproof and explosion-proof structure of the technical scheme can provide fireproof and explosion-proof functions for the inhaul cable on the basis of not changing the original functions of the inhaul cable, the protective layer and the inhaul cable are separated from each other, and meanwhile, the fireproof layer and the explosion-proof pipe are also separated from each other, so that the replacement and maintenance are convenient; the cable body is characterized in that the cable body is provided with a first fireproof layer and a second fireproof layer, wherein the first fireproof layer is arranged between the cable body and the steel pipe; the materials used by the first fireproof layer and the second fireproof layer have fireproof and heat insulation performance; the material used by the explosion-proof tube has high strength or buffering energy absorption performance, and can resist impact, explosion and other damages.

The further technical scheme is that the first fireproof layer is positioned on the surface of the cable body.

The further technical scheme is that the stay cable further comprises an HDPE sheath, and the HDPE sheath is located between the steel pipe and the cable body and connected with the waterproof cover; the first fire-resistant layer is positioned on the surface of the HDPE sheath.

The further technical scheme is that the inhaul cable further comprises a shock absorber, wherein the shock absorber is located inside the waterproof cover, connected with the explosion-proof pipe and sleeved outside the second fireproof layer. The fireproof and explosion-proof cable in the scheme can be used for a long-distance cable-stayed bridge cable with a vibration damper.

The shock absorber is connected with the explosion-proof tube through a support and a bolt, and two ends of the support are respectively connected with the shock absorber and the explosion-proof tube through bolts.

The bridge comprises a pre-buried pipe, and an explosion-proof pipe is connected with the bridge through the pre-buried pipe; the pre-buried pipe is buried inside the bridge and is fixedly connected with the bridge, and the explosion-proof pipe is connected with the pre-buried pipe.

The bridge comprises a pre-buried pipe and a concrete block for fixing the pre-buried pipe, and the anti-explosion pipe is connected with the bridge through the concrete block; the concrete block is fixedly connected with the bridge, and the explosion-proof pipe is connected with the concrete block.

The further technical scheme is that the explosion-proof pipe is connected with the bridge in one of welding, riveting, threaded connection and nesting.

The further technical scheme is that the steel pipe is connected with the waterproof cover in one mode of welding, riveting, threaded connection and nesting.

The further technical scheme is that the cable body is one of a steel strand cable body or a steel wire cable body.

The invention has the beneficial effects that:

according to the fireproof and explosion-proof inhaul cable provided by the invention, the fireproof and explosion-proof functions are provided for the inhaul cable on the basis of not changing the original functions of the inhaul cable, the protective layer and the inhaul cable are mutually separated, and meanwhile, the first fireproof layer, the second fireproof layer and the explosion-proof pipe are also mutually separated, so that the replacement and maintenance are convenient; the cable can be used for the construction of new or old bridge cables and can also be used for long-distance cable-stayed bridge cables.

Drawings

FIG. 1 is a diagram: the first fireproof layer is positioned on the fireproof and explosion-proof inhaul cable on the surface of the cable body.

FIG. 2 is a diagram of: the invention discloses a structural schematic diagram of a fireproof and explosion-proof inhaul cable with an explosion-proof pipe connected with an embedded pipe.

FIG. 3 is a diagram of: the invention discloses a structural schematic diagram of a fireproof and explosion-proof inhaul cable with a first fireproof layer positioned on the surface of a sheath.

FIG. 4 is a diagram of: the first fireproof layer is positioned on the surface of the cable body, and the fireproof and explosion-proof inhaul cable with the shock absorber is structurally shown.

FIG. 5 is a diagram: the invention discloses a structural schematic diagram of a fireproof and explosion-proof inhaul cable with a shock absorber, wherein a first fireproof layer is positioned on the surface of a sheath.

In the figure:

1. a cable body; 2. a HDPE jacket; 31. a first fire resistant layer; 32. a second fire-resistant layer; 4. a steel pipe; 5. a waterproof cover; 51. an ear plate; 52. a support; 6. a shock absorber; 7. an explosion-proof tube; 8. pre-burying a pipe; 9. a concrete block; 10. a bridge.

Detailed Description

The invention is described in detail below with reference to fig. 1 to 5 and the embodiments, and the features of the following embodiments and examples may be combined with each other without conflict.

As shown in fig. 1, the present embodiment provides a fire-proof and explosion-proof inhaul cable, which includes a cable body 1 made of steel stranded wires, a first fire-proof layer 31, a second fire-proof layer 32, a steel pipe 4, a waterproof cover 5, and an explosion-proof pipe 7; the bridge 10 is provided with a pre-buried pipe 8 and a concrete block 9 for fixing the pre-buried pipe 8; the upper end of the waterproof cover 5 is connected with the steel pipe 4 in a nesting mode, and the lower end of the waterproof cover is connected with one end of the explosion-proof pipe 7 in a welding mode; the other end of the explosion-proof pipe 7 is connected with a concrete block 9 through a bolt; one end of the cable body 1 is anchored in an anchorage device at one end of the bridge 10, and the other end of the cable body is anchored on a bridge tower of the cable-stayed bridge; the cable body 1 penetrates out of the bridge 10, sequentially penetrates through the explosion-proof pipe 7 and the waterproof cover 5 and extends into the steel pipe 4; the first fireproof layer 31 is positioned at the part above the waterproof cover 5, the second fireproof layer 32 is positioned at the part below the waterproof cover 5, and the first fireproof layer 31 and the second fireproof layer 32 are both arranged on the surface of the cable body 1. The specific height of the steel pipe 4 can be set according to the requirement of the bridge, and is not limited herein. The fire prevention and explosion-proof structure in this embodiment can provide the fire prevention explosion-proof function simultaneously for the cable on the basis that does not change the original function of cable, and inoxidizing coating (first flame retardant coating, second flame retardant coating and explosion-proof pipe) and cable are separately from each other, and first flame retardant coating 31, second flame retardant coating 32 also separate from explosion-proof pipe 7 each other simultaneously, are convenient for change and maintain, can be used to the improvement of old bridge cable.

The connection relationship between the waterproof cover 5 and the steel pipe 4 is exemplarily shown in the above embodiments, and the connection relationship may be replaced by welding, riveting, screwing, and the like according to other embodiments or practical applications. The connection relationship between the waterproof cover 5 and the explosion-proof pipe 7 is exemplarily shown in the above embodiments, and the connection relationship may be replaced by means of riveting, screwing, nesting and the like according to other embodiments or practical applications. The cable body 1 is exemplarily shown to be made of steel stranded wires in the above embodiments, and the fire-proof and explosion-proof structure of the above embodiments can also be applied to the cable body 1 made of steel wires according to other embodiments or practical applications.

The explosion-proof pipe 7 and the bridge 10 in the above embodiment are connected through the concrete block 9, according to other embodiments or practical applications, as shown in fig. 2, the explosion-proof pipe 7 can also be connected with the bridge 10 through the embedded pipe 8, and the connection modes include but are not limited to welding, riveting, screwing, nesting and the like; while the above embodiments describe the manner in which the explosion-proof pipe 7 is indirectly connected to the bridge 10, according to other embodiments or practical applications, the explosion-proof pipe 7 may also be directly connected to the bridge 10, and the connection manner includes, but is not limited to, welding, riveting, screwing, nesting, and the like.

In another embodiment, as shown in fig. 3, on the basis of the above embodiment, the cable further includes a HDPE sheath 2 (sheath made of high density polyethylene material), the HDPE sheath 2 is located between the steel pipe 4 and the cable body 1, and is connected with the waterproof cover 5; the first flame retardant layer 31 is located on the surface of the HDPE sheath 2.

In another embodiment, as shown in fig. 4 and 5, on the basis of the above embodiment, the cable further includes a damper 6 and a support 52, the damper 6 is located inside the waterproof cover 5 and is sleeved outside the second fireproof layer 32, and two ends of the support 52 are respectively connected with the damper 6 and the explosion-proof pipe 7 through bolts. The fireproof and explosion-proof cable in the scheme can be used for a long-distance cable-stayed bridge cable with a shock absorber 6.

The above embodiments exemplarily show the connection manner of the shock absorber 6 and the explosion proof tube 7, and according to other embodiments or practical applications, the explosion proof tube 7 can also be directly connected with the shock absorber 6 by welding, riveting, screwing, nesting and the like.

According to the fireproof and explosion-proof inhaul cable provided by the invention, on the basis of not changing the original functions of the inhaul cable, the fireproof and explosion-proof functions are provided for the inhaul cable, the protective layer and the inhaul cable are separated from each other, and meanwhile, the first fireproof layer 31, the second fireproof layer 32 and the explosion-proof pipe 7 are also separated from each other, so that the replacement and maintenance are facilitated; the cable can be used for the construction of new or old bridge cables and can also be used for long-distance cable-stayed bridge cables.