Fireproof protection device for cable and bridge thereof

Abstract

The invention discloses a fireproof protection device for a cable and a bridge thereof, the fireproof protection device comprises an insulating layer and an inner core, the outer wall of the inner core is coated with the insulating layer, the outer side of the insulating layer is provided with a sheath, and a filling layer is arranged in a gap between the insulating layer and the inner core; a shielding layer is arranged between the insulating layer and the sheath, and a flame-retardant layer is arranged between the sheath and the shielding layer. When the insulating layer encounters high temperature, the insulating layer can be converted into a hard ceramic shell, and insulation and fire-imitating protection can be provided for the cable; electromagnetic interference can be effectively reduced, and certain fireproof protection can be provided for the cable; when combustion occurs, toxic smog is not generated, and good flame-retardant and fireproof performance is achieved; when the filling layer is subjected to high heat, the filling layer can be decomposed to absorb heat and release water vapor, the flame temperature can be reduced, combustion can be inhibited, the inner core and the insulating layer can be effectively prevented from moving or deforming when the cable is bent or stretched, and the stability of the cable structure can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a fire protection device for a cable and a bridge thereof. Background Art

[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. Cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multiple wires and insulation layers, used to connect circuits, electrical appliances, etc.

[0003] When existing indoor cables are in use, they are generally suspended above the ceiling using a bridge. After the decoration is completed, it is difficult to perform regular maintenance on the entire line. When the cable burns, it is easy to ignite the ceiling and cause a fire. Therefore, we propose a fire protection device for cables and their bridges. Summary of the invention

[0004] The object of the present invention is to provide a fire protection device for cables and their bridges to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a cable, comprising an insulating layer and an inner core, wherein the insulating layer is coated on the outer wall of the inner core, a sheath is arranged on the outer side of the insulating layer, and a filling layer is arranged in the gap between the insulating layer and the inner core;

[0006] A shielding layer is arranged between the insulating layer and the sheath, and a flame retardant layer is arranged between the sheath and the shielding layer.

[0007] In an embodiment of the present invention, the insulating layer is configured to be a ceramic silicone rubber material.

[0008] In one embodiment of the present invention, the filling layer is configured as an inorganic mineral filling material.

[0009] In an embodiment of the present invention, the shielding layer is configured as a tinned copper wire braided shielding layer.

[0010] In one embodiment of the present invention, the sheath is provided as a layer of halogen-free, low-smoke, flame-retardant polyolefin material.

[0011] The present invention further provides a fire protection device for a bridge, comprising a bridge body and a fixing member, wherein the fixing member is used to fix the bridge body under a floor slab, a bracket assembly is fixedly installed in the bridge body, the bracket is used to fix cables, and a through hole is opened on the side of the bridge body, and the through hole is used to dissipate heat from the inner wall of the bridge.

[0012] In one embodiment of the present invention, the fixing member includes a connecting plate, a threaded rod, a threaded tube and a cross bar. The connecting plate is fixedly installed at the bottom of the floor slab by bolts, one end of the threaded rod is fixedly connected to the connecting plate, the other end of the threaded rod is fixedly connected to the threaded tube, the threaded tube is rotatably installed on the cross bar, and the bridge frame body is fixedly installed on the cross bar.

[0013] In one embodiment of the present invention, the bracket assembly includes a support rod, a support plate, a first clamping plate, and a second clamping plate fixedly connected to the support plate, the support plate is provided with a sliding groove, a slider is slidably installed in the sliding groove, the slider is fixedly connected to the first clamping plate, an elastic member is fixedly installed in the sliding groove, and one end of the elastic member is connected to the slider.

[0014] In one embodiment of the present invention, the elastic member includes a movable rod, a fixed tube and a spring, one end of the movable rod is fixedly connected to one end of the spring, the other end of the spring is fixedly connected to the inner wall of the fixed tube, and the fixed tube is fixedly installed in the slide groove.

[0015] In one embodiment of the present invention, a connecting rod is fixedly connected to the cross bar, a truncated table is fixedly connected to the upper end of the connecting rod, the threaded tube is slidably mounted on the truncated table, the inner bottom of the threaded tube fits with the bottom of the truncated table, and the connecting rod passes through the bottom of the threaded tube.

[0016] In summary, due to the adoption of the above technology, the beneficial effects of the present invention are:

[0017] 1. Through the use of the insulating layer, when the insulating layer encounters high temperature, it can be transformed into a hard ceramic shell, which can provide insulation and fire protection for the cable; through the use of the shielding layer, electromagnetic interference can be effectively reduced, and a certain fire protection can be provided for the cable; through the use of the sheath, no toxic smoke will be generated in the event of combustion, and it has good flame retardant and fireproof properties; through the use of the filling layer, when the filling layer is subjected to high heat, it can decompose and absorb heat, release water vapor, can reduce the flame temperature, inhibit combustion, and can effectively prevent the inner core and the insulating layer from moving or deforming when the cable is bent or stretched, which can improve the stability of the cable structure.

[0018] 2. During use, when installing the main body of the bridge, first fix the connecting piece under the floor with bolts, and then install the threaded pipe on the threaded rod. After the installation is completed, according to the designer's requirements for the later ceiling, adjust the height of the cross bar up or down by rotating the threaded pipe. After reaching the required height, install the main body of the bridge on the cross bar with bolts. The installation height of the main body of the bridge can be easily adjusted, which is convenient for the workers. The distance between the cable and the ceiling and floor can be adjusted according to the standard parameters of the cable installation, which can effectively avoid the ignition of the ceiling when the cable catches fire, thereby improving the safety of the cable after installation.

[0019] 3. Through the use of the bracket assembly, when laying the cable in the bridge body, by moving the first clamping plate, the first clamping plate drives the slider to move along the slide groove, and the distance between the first clamping plate and the second clamping plate is adjusted, cables of different diameters can be placed, and the cables can be separated from adjacent cables and the contact area with the bridge body can be reduced, which can effectively avoid heat accumulation, reduce high heat generation, and effectively provide fire protection.

[0020] 4. Through the use of elastic parts, after the cable is placed between the first clamping plate and the second clamping plate, the spring can pull the movable rod to move the slider along the slide groove, thereby driving the first clamping plate to clamp and fix the cable, so that cables of various diameters can be clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic top view of the bridge main body of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the support plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the threaded pipe of the present invention;

[0025] Figure 5 It is an axonometric schematic diagram of the inner core of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure of part A in the middle.

[0027] In the figure: 1. Insulating layer; 2. Inner core; 3. Sheath; 4. Filling layer; 5. Shielding layer; 6. Flame retardant layer; 7. Bridge body; 8. Fixing piece; 9. Through hole; 10. Connecting piece; 11. Threaded rod; 12. Threaded pipe; 13. Cross bar; 14. Support rod; 15. Support plate; 16. First clamping plate; 17. Second clamping plate; 18. Slide groove; 19. Sliding block; 20. Elastic piece; 21. Movable rod; 22. Fixed pipe; 23. Spring; 24. Connecting rod; 25. Cone. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances of the specification.

[0031] Example 1

[0032] See also Figure 1 , Figure 5 and Figure 6The present invention provides a cable, comprising an insulating layer 1 and an inner core 2, wherein the insulating layer 1 is coated on the outer wall of the inner core 2, a sheath 3 is arranged on the outer side of the insulating layer 1, and a filling layer 4 is arranged in the gap between the insulating layer 1 and the inner core 2;

[0033] A shielding layer 5 is arranged between the insulating layer 1 and the sheath 3, a flame retardant layer 6 is arranged between the sheath 3 and the shielding layer 5, the insulating layer 1 is set to a ceramic silicone rubber material, the filling layer 4 is set to an inorganic mineral filling material, the shielding layer 5 is set to a tinned copper wire braided shielding layer 5, and the sheath 3 is set to a halogen-free low-smoke flame-retardant polyolefin material layer.

[0034] It should be noted that the flame retardant layer 6 is flame retardant polyurethane. By using the flame retardant layer 6, the friction between the flame retardant layer 6 and the shielding layer 5 can be increased, and the integrity of the cable can be improved when the cable is pulled, and the disconnection between the layers when the cable is pulled can be effectively reduced, and the flame retardant effect can be further improved.

[0035] The inorganic mineral filling material used in the filling layer is set to include but not limited to one of magnesium hydroxide or aluminum hydroxide.

[0036] By adopting the above scheme, through the use of the insulating layer 1, when the insulating layer 1 encounters high temperature, it can be transformed into a hard ceramic shell, which can provide insulation and fire protection for the cable;

[0037] The use of shielding layer can effectively reduce electromagnetic interference and provide certain fire protection for cables;

[0038] By using the sheath, no toxic smoke will be produced in the event of combustion, and it has good flame retardant and fireproof properties;

[0039] By using the filling layer, when the filling layer is subjected to high heat, it can decompose and absorb heat, release water vapor, which can reduce the flame temperature and inhibit combustion. It can also effectively prevent the inner core 2 and the insulating layer 1 from moving or deforming when the cable is bent or stretched, thereby improving the stability of the cable structure.

[0040] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention further provides a fire protection device for a bridge, including a bridge body 7 and a fixing member 8, wherein the fixing member 8 is used to fix the bridge body 7 under the floor, a bracket assembly is fixedly installed in the bridge body 7, and the bracket assembly is used to fix the cable, and a through hole 9 is opened on the side of the bridge body 7, and the through hole 9 is used to dissipate heat from the inner wall of the bridge body 7.

[0041] In this embodiment, the fixing member 8 includes a connecting plate 10, a threaded rod 11, a threaded tube 12 and a cross bar 13. The connecting plate 10 is fixedly installed at the bottom of the floor slab by bolts, one end of the threaded rod 11 is fixedly connected to the connecting plate 10, and the other end of the threaded rod 11 is fixedly connected to the threaded tube 12. The threaded tube 12 is rotatably installed on the cross bar 13, and the bridge frame body 7 is fixedly installed on the cross bar 13.

[0042] By adopting the above scheme, through the use of the fixing parts 8, when installing the bridge frame body 7, the connecting plate 10 is first fixed to the bottom of the floor with bolts, and then the threaded tube 12 is threadedly installed on the threaded rod 11. After the installation is completed, according to the design party's requirements for the later ceiling, the height of the cross bar 13 is adjusted upward or downward by rotating the threaded tube 12. After reaching the required height, the bridge frame body 7 is bolted to the cross bar 13. The installation height of the bridge frame body 7 can be easily adjusted, which is convenient for the workers, and the distance between the cable and the ceiling and floor can be adjusted according to the standard parameters of the cable installation, thereby improving the safety of the cable after installation.

[0043] In this embodiment, the bracket assembly includes a support rod 14, a support plate 15, a first clamping plate 16, and a second clamping plate 17 fixedly connected to the support plate 15. The support plate 15 is provided with a slide groove 18, and a slider 19 is slidably installed in the slide groove 18. The slider 19 is fixedly connected to the first clamping plate 16. An elastic member 20 is fixedly installed in the slide groove 18, and one end of the elastic member 20 is connected to the slider 19.

[0044] By adopting the above scheme and using the bracket assembly, when laying the cable in the bridge frame body 7, by moving the first clamping plate 16, the first clamping plate 16 drives the slider 19 to move along the slide groove 18, and adjusting the distance between the first clamping plate 16 and the second clamping plate 17, cables of different diameters can be placed, and the cables can be separated from adjacent cables and the contact area with the bridge frame body 7 can be reduced, which can effectively avoid heat accumulation, reduce high heat generation, and effectively provide fire protection.

[0045] In this embodiment, the elastic member 20 includes a movable rod 21, a fixed tube 22 and a spring 23, one end of the movable rod 21 is fixedly connected to one end of the spring 23, the other end of the spring 23 is fixedly connected to the inner wall of the fixed tube 22, and the fixed tube 22 is fixedly installed in the slide groove 18.

[0046] By adopting the above scheme, through the use of the elastic member 20, after the cable is placed between the first clamping plate 16 and the second clamping plate 17, the spring 23 can pull the movable rod 21 to move the slider 19 along the slide groove 18, thereby driving the first clamping plate 16 to clamp and fix the cable, so that cables of various different diameters can be clamped and fixed.

[0047] In this embodiment, a connecting rod 24 is fixedly connected to the cross bar 13, and a round table 25 is fixedly connected to the upper end of the connecting rod 24. The threaded tube 12 is slidably mounted on the round table 25, and the inner bottom of the threaded tube 12 fits with the bottom of the round table 25, and the connecting rod 24 passes through the bottom of the threaded tube 12.

[0048] By adopting the above solution, the threaded tube 12 can be limited by using the round table 25, so as to prevent the threaded tube 12 from being separated from the cross bar 13.

[0049] Working principle:

[0050] By using the insulating layer 1, when the insulating layer 1 encounters high temperature, it can be transformed into a hard ceramic shell, which can provide insulation and fire protection for the cable; by using the shielding layer, electromagnetic interference can be effectively reduced, and a certain fire protection can be provided for the cable; by using the sheath, no toxic smoke can be generated in the event of combustion, and it has good flame retardant and fireproof properties; by using the filling layer, when the filling layer is subjected to high heat, it can decompose and absorb heat, release water vapor, can reduce the flame temperature, inhibit combustion, and can effectively prevent the inner core 2 and the insulating layer 1 from moving or deforming when the cable is bent or stretched, which can improve the stability of the cable structure;

[0051] When in use, when installing the bridge frame body 7, first fix the connecting piece 10 under the floor slab with bolts, and then thread the threaded tube 12 on the threaded rod 11. After the installation is completed, according to the design party's requirements for the later ceiling, the height of the cross bar 13 is adjusted upward or downward by rotating the threaded tube 12. After reaching the required height, the bridge frame body 7 is bolted to the cross bar 13, which can facilitate the adjustment of the installation height of the bridge frame body 7, and is convenient for workers. In addition, the distance between the cable and the ceiling and the floor slab can be adjusted according to the standard parameters of the cable installation, which can effectively avoid the situation of igniting the ceiling when the cable catches fire, thereby improving the safety of the cable after installation.

[0052] By using the bracket assembly, when laying the cable in the bridge main body 7, by moving the first clamping plate 16, the first clamping plate 16 drives the slider 19 to move along the slide groove 18, and adjusting the distance between the first clamping plate 16 and the second clamping plate 17, cables of different diameters can be placed, and the cable can be separated from the adjacent cables, and the contact area with the bridge main body 7 can be reduced, which can effectively avoid heat accumulation, reduce high heat generation, and effectively provide fire protection;

[0053] By using the elastic member 20, after the cable is placed between the first clamping plate 16 and the second clamping plate 17, the spring 23 can pull the movable rod 21 to move the slider 19 along the slide groove 18, thereby driving the first clamping plate 16 to clamp and fix the cable, so that cables of various diameters can be clamped and fixed.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A cable comprising an insulating layer (1) and an inner core (2), It is characterized in that The insulating layer (1) is coated on the outer wall of the inner core (2), a sheath (3) is arranged on the outer side of the insulating layer (1), and a filling layer (4) is arranged in the gap between the insulating layer (1) and the inner core (2); A shielding layer (5) is provided between the insulating layer (1) and the sheath (3), and a flame retardant layer (6) is provided between the sheath (3) and the shielding layer (5).

2. A cable according to claim 1, Features: The insulating layer (1) is provided with a ceramic silicone rubber material.

3. A cable according to claim 1, Features: The filling layer (4) is provided with an inorganic mineral filling material.

4. A cable according to claim 1, Features: The shielding layer (5) is configured as a tinned copper wire braided shielding layer (5).

5. A cable according to claim 4, Features: The sheath (3) is provided as a halogen-free, low-smoke, flame-retardant polyolefin material layer.

6. A fire protection device for a bridge as claimed in claims 1 to 5, It is characterized in that The invention comprises a bridge frame body (7) and a fixing member (8), wherein the fixing member (8) is used to fix the bridge frame body (7) below the floor slab, a bracket assembly is fixedly installed in the bridge frame body (7), and the bracket assembly is used to fix the cable, and a through hole (9) is opened on the side of the bridge frame body (7), and the through hole (9) is used to dissipate heat from the inner wall of the bridge frame body (7).

7. A fire protection device for a bridge according to claim 6, Features: The fixing member (8) comprises a connecting piece (10), a threaded rod (11), a threaded pipe (12) and a cross bar (13); the connecting piece (10) is fixedly mounted on the bottom of the floor slab by means of bolts; one end of the threaded rod (11) is fixedly connected to the connecting piece (10); the other end of the threaded rod (11) is fixedly connected to the threaded pipe (12); the threaded pipe (12) is rotatably mounted on the cross bar (13); and the bridge frame body (7) is fixedly mounted on the cross bar (13).

8. A fire protection device for a bridge according to claim 6, Features: The bracket assembly includes a support rod (14), a support plate (15), a first clamping plate (16), and a second clamping plate (17) fixedly connected to the support plate (15); a slide groove (18) is provided on the support plate (15); a slider (19) is slidably installed in the slide groove (18); the slider (19) is fixedly connected to the first clamping plate (16); an elastic member (20) is fixedly installed in the slide groove (18); one end of the elastic member (20) is connected to the slider (19).

9. A fire protection device for a bridge according to claim 8, Features: The elastic member (20) comprises a movable rod (21), a fixed tube (22) and a spring (23); one end of the movable rod (21) is fixedly connected to one end of the spring (23); the other end of the spring (23) is fixedly connected to the inner wall of the fixed tube (22); and the fixed tube (22) is fixedly installed in the slide groove (18).

10. A fire protection device for a bridge according to claim 7, Features: The cross bar (13) is fixedly connected with a connecting rod (24), the upper end of the connecting rod (24) is fixedly connected with a round table (25), the threaded tube (12) is slidably mounted on the round table (25), the inner bottom of the threaded tube (12) is in contact with the bottom of the round table (25), and the connecting rod (24) passes through the bottom of the threaded tube (12).

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