CN219435586U - Low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit - Google Patents
Low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit Download PDFInfo
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- CN219435586U CN219435586U CN202320791193.1U CN202320791193U CN219435586U CN 219435586 U CN219435586 U CN 219435586U CN 202320791193 U CN202320791193 U CN 202320791193U CN 219435586 U CN219435586 U CN 219435586U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit, which belongs to the technical field of cables, and particularly relates to a low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit. According to the utility model, the fire-retarding part is arranged in the cable outer cladding layer, and after the two ends of the fire-retarding part are arranged outside the positioning groove to form a seal, the convex ring pad can be driven to be slidably arranged in the filling groove, at the moment, the push ring can be pushed outwards to prop against the convex ring pad through the thermal expansion of the fire-retarding expansion coating when the cable outer cladding layer burns, and then the open fire is isolated and prevented from being outwards diffused through fire-isolating filling particles.
Description
Technical Field
The utility model belongs to the technical field of cables, and particularly relates to a low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit.
Background
The track traffic refers to a type of traffic tool or a transportation system which needs to run on a specific track by an operation vehicle, the most typical track traffic is a railway system consisting of a traditional train and a standard railway, along with the diversified development of the train and the railway technology, the track traffic is of more and more types, not only is the land transportation spread over a long distance, but also is widely applied to urban public transportation in a middle-short distance, and in order to be used in cooperation with track traffic electrification, cables need to be laid along the track traffic; with the frequent occurrence of electric fire accidents, the flame retardation problem of the electric wires and cables is gradually attracting attention, and more low-smoke halogen-free flame retardation fire-resistant cables are applied to urban rails to inhibit flame propagation and reduce loss.
At present, although the low-smoke halogen-free flame-retardant fireproof cable used in the market has certain fireproof performance, the cable still can spread outwards when open fire occurs, and further the burnt part of the cable is continuously increased, and the subsequent maintenance difficulty is greatly increased.
Disclosure of Invention
The utility model aims to provide a low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit, which solves the problems in the background technology.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit, which comprises a cable outer coating layer and a cable core, wherein the cable outer coating layer is of a sectional structure, an inner fireproof layer is arranged on the outer side of the cable core, a fireproof part for isolating open fire and preventing the open fire from spreading is arranged on the outer side of the inner fireproof layer, the fireproof part is positioned between adjacent cable outer coating layers, an arc-shaped protection clamp capable of being conveniently assembled and disassembled is arranged on the outer side of the cable outer coating layer, an outer protection layer for increasing the caliber and preventing termites from biting is arranged on the outer side of the arc-shaped protection clamp, a metal woven layer for increasing the protection performance is arranged on the outer side of the outer protection layer, and a connecting plate for being connected with the outer protection layer is arranged on the outer side of one end of the cable outer protection layer.
Further, an arc-shaped groove is formed in one end of the arc-shaped protective clamp, an arc-shaped plate is arranged on the outer side of the other end of the arc-shaped protective clamp, and the outer sides of the cable outer cladding layers of the arc-shaped protective clamp are provided with two identical structures.
Further, the outside of arc is provided with outwards convex spacing triangular block, the spacing draw-in groove that is used for spacing triangular block joint to connect has still been seted up to the inboard of arc groove.
Further, filling grooves for sliding connection of convex ring pads are formed in the two ends of the fire retarding part, and positioning grooves connected with the convex parts at the two ends of the fire retarding part are formed in the inner side and the outer side of the two ends of the outer cladding layer of the cable.
Further, the inside link plate that is used for connecting inside and outside both sides that is provided with in both ends of fire-retardant portion, link plate and the inside plate body structure of fire-retardant portion between form annular space and its inside packing have be used for with the isolated fire-proof packing granule of open flame.
Further, push rings for supporting the convex ring pads are slidably mounted inside the two ends of the fire retarding part, and fire-resistant expansion coatings for driving the push rings to move outwards are coated on the outer sides of the connecting plates and the outer surfaces of the push rings.
The utility model has the following beneficial effects:
according to the utility model, the fire-retarding part is arranged in the cable outer cladding layer, and after the two ends of the fire-retarding part are arranged outside the positioning groove to form a seal, the convex ring pad can be driven to be slidably arranged in the filling groove, at the moment, when one cable outer cladding layer burns, the push ring is pushed outwards to prop against the convex ring pad through the thermal expansion of the fire-retarding expansion coating, and then the open fire is isolated and prevented from being spread outwards through fire-isolating filling particles;
the arc-shaped protection clamp is sleeved outside the cable outer coating layer in a segmented mode, then the arc-shaped protection clamp is pushed, the limiting clamping groove is arranged in the limiting triangular block in a sliding mode to form a limiting mode, the outer protection layer can be driven to be arranged outside the cable outer coating layer, at the moment, the adjacent arc-shaped protection clamp and the end face of the adjacent outer protection layer are mutually attached to each other to cover the cable outer coating layer, the diameter of the outer protection layer is increased, the metal braiding layer is utilized to form secondary protection, the rat and termite bite protection service life in a humid environment is avoided, and resources can be selectively paved according to the humid area to avoid waste.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall appearance structure of the present utility model;
FIG. 2 is a schematic view of the inner portion of the cable jacket of FIG. 1;
FIG. 3 is a schematic view of a part A of the enlarged partial structure in FIG. 1;
FIG. 4 is a schematic view of the fire retardant portion of FIG. 1;
in the drawings, the list of components represented by the various numbers is as follows:
in the figure: 1. an outer cable coating; 2. a cable core; 3. an inner fire-blocking layer; 4. a fire-blocking part; 5. an arc-shaped protective clamp; 6. an outer protective layer; 7. a metal braid; 8. a connecting plate; 9. a convex ring pad; 10. an arc-shaped groove; 11. an arc-shaped plate; 12. limiting triangular blocks; 13. a limit clamping groove; 14. filling the groove; 15. a positioning groove; 16. a connecting plate; 17. fire-blocking filling particles; 18. a push ring; 19. a refractory intumescent coating.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1-4, the utility model discloses a low smoke halogen-free flame retardant fire resistant cable for urban rail transit, which comprises a cable outer cladding layer 1 and a cable core 2, wherein the cable outer cladding layer 1 is of a sectional structure, an inner fire resistant layer 3 is arranged on the outer side of the cable core 2, a fire resistant part 4 for isolating open fire and preventing the open fire from spreading is arranged on the outer side of the inner fire resistant layer 3, the fire resistant part 4 is positioned between adjacent cable outer cladding layers 1, an arc-shaped protection clamp 5 which can be conveniently assembled and disassembled is arranged on the outer side of the cable outer cladding layer 1, an outer protection layer 6 for increasing the caliber and avoiding being bitten by rat ants is arranged on the outer side of the arc-shaped protection clamp 5, a metal braiding layer 7 for increasing the protection performance is arranged on the outer side of the outer protection layer 6, a connecting plate 8 for being connected with the outer protection layer 6 is arranged on the outer side of one end of the cable outer cladding layer 1, a convex ring pad 9 for being matched with the fire resistant part 4 is arranged on the outer side of one end of the cable outer cladding layer 1, the arc-shaped protection layer 5 can effectively form a double-layer protection clamp through the metal braiding layer 7 by increasing the hardness, and the arc-shaped protection clamp 5 can be matched with a large size, and the arc-shaped protection clamp 5 can be conveniently assembled and installed and used for adjusting the installation position by self-walking.
Wherein, arc wall 10 has been seted up to the inside one end of arc protection clamp 5, and the other end outside of arc protection clamp 5 is provided with arc 11, and arc protection clamp 5 is two identical structure settings for the outside of cable outer cover 1, and adjacent arc protection clamp 5 is the setting of upside down in the outside both ends of cable outer cover 1 in this embodiment.
Wherein, the outside of arc 11 is provided with outside convex spacing triangular block 12, and limit clamping groove 13 that is used for spacing triangular block 12 block to connect has still been seted up to the inboard of arc 10, and limit triangular block 12 can support limit clamping groove 13's internal surface through its both ends face in this embodiment, prevents that arc protection clamp 5 from appearing the circumstances of waning.
Wherein, the inside filling groove 14 that is used for bulge loop pad 9 sliding connection that has seted up in the both ends of fire-retardant portion 4, the inside and outside both sides in both ends of cable outer cover 1 have seted up the constant head tank 15 that is connected with fire-retardant portion 4 both ends bulge portion.
Wherein, the both ends inside of fire-retardant portion 4 is provided with and is used for connecting the link plate 16 of inside and outside both sides, forms annular space and its inside packing has and is used for the isolated fire-proof packing granule 17 of open flame between link plate 16 and the inside plate body structure of fire-retardant portion 4, link plate 16 still is used for increasing the installation stability performance at fire-retardant portion 4 both ends in this embodiment, prevents to appear not hard up condition.
Wherein, push ring 18 for propping against convex ring pad 9 is slidingly installed inside the two ends of fire-retardant portion 4, and fire-resistant expansion coating 19 for driving push ring 18 to move outwards is smeared on the outer side of connecting plate 16 and the outer surface of push ring 18, and in this embodiment, after expansion, push ring 18 can be ejected outwards by utilizing small gaps between adjacent components.
One specific application of this embodiment is: according to the utility model, the fire-retardant part 4 is arranged in the cable outer cladding layer 1, after the protruding parts at the two ends of the inner side and the outer side of the fire-retardant part 4 are arranged outside the positioning grooves 15 at the inner side and the outer side of the end part of the cable outer cladding layer 1 to form a seal, the driving convex ring pad 9 which can be arranged at the end part of the cable outer cladding layer 1 is slidably arranged in the filling grooves 14 at the two ends of the fire-retardant part 4, at the moment, when the cable outer cladding layer 1 burns, the fire-retardant expansion coating 19 arranged on the connecting plates 16 at the two ends of the fire-retardant part 4 and the surfaces of the push ring 18 is heated and expanded, the push ring 18 is pushed out to prop against the convex ring pad 9, and then the fire-retardant filling particles 17 filled in the two ends of the fire-retardant part 4 isolate the open fire, so that the open fire is prevented from spreading outwards; the arc-shaped protection clamp 5 is sleeved outside the cable outer coating layer 1 in a sectionalized mode, one arc-shaped protection clamp 5 is pushed, the limiting clamping groove 13 on the outer side of the arc-shaped plate 11 at one end of the arc-shaped protection clamp is slidably mounted in the limiting triangular block 12 on one end of the other arc-shaped protection clamp 5 to form limiting, the outer protection layer 6 can be driven to be mounted outside the cable outer coating layer 1, the adjacent arc-shaped protection clamps 5 and the end faces of the adjacent outer protection layers 6 are mutually attached to each other to coat the cable outer coating layer 1, the diameter of the outer protection layers 6 is increased, and the metal woven layer 7 arranged on the outer side of the outer protection layers 6 is utilized to form secondary protection, so that when the service life of the rat and termite bite protection in a humid environment is avoided, resources can be selectively paved according to a humid area to avoid waste.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The utility model provides a urban rail transit is with low smoke and zero halogen fire-retardant fire-resistant cable, includes cable outer cover layer (1) and cable core (2), its characterized in that: the cable outer cladding layer (1) is arranged to be of a sectional type structure, an inner fireproof layer (3) is arranged on the outer side of the cable core (2), a fire stopping part (4) used for preventing an open fire from spreading is arranged on the outer side of the inner fireproof layer (3), the fire stopping part (4) is located between adjacent cable outer cladding layers (1), an arc protection clamp (5) capable of being assembled and disassembled conveniently is arranged on the outer side of the cable outer cladding layer (1), an outer protection layer (6) used for increasing the caliber and avoiding being bitten by rats and ants is arranged on the outer side of the arc protection clamp (5), a metal woven layer (7) used for increasing the protection performance is arranged on the outer side of the outer protection layer (6), and a connecting plate (8) used for being connected with the outer protection layer (6) is arranged on the outer side of one end of the cable outer cladding layer (1).
2. The low smoke zero halogen flame retardant fire resistant cable for urban rail transit according to claim 1, wherein: the novel cable outer cover is characterized in that an arc-shaped groove (10) is formed in one end of the arc-shaped protective clamp (5), an arc-shaped plate (11) is arranged on the outer side of the other end of the arc-shaped protective clamp (5), and the arc-shaped protective clamp (5) is arranged in two identical structures on the outer side of the cable outer cover layer (1).
3. The low smoke zero halogen flame retardant fire resistant cable for urban rail transit according to claim 2, wherein: the outer side of the arc-shaped plate (11) is provided with a limiting triangular block (12) protruding outwards, and the inner side of the arc-shaped groove (10) is also provided with a limiting clamping groove (13) for clamping and connecting the limiting triangular block (12).
4. The low smoke zero halogen flame retardant fire resistant cable for urban rail transit according to claim 1, wherein: filling grooves (14) for sliding connection of convex ring gaskets (9) are formed in the inner portion of the two ends of the fire retarding portion (4), and positioning grooves (15) connected with the convex portions at the two ends of the fire retarding portion (4) are formed in the inner side and the outer side of the two ends of the cable outer coating layer (1).
5. The low smoke zero halogen flame retardant fire resistant cable for urban rail transit according to claim 1, wherein: connecting plates (16) used for connecting the inner side and the outer side are arranged inside the two ends of the fire retarding part (4), an annular space is formed between the connecting plates (16) and the plate body structure inside the fire retarding part (4), and fire isolating filling particles (17) used for isolating open fires are filled inside the connecting plates.
6. The low smoke zero halogen flame retardant fire resistant cable for urban rail transit of claim 5, wherein: push rings (18) for propping against the convex ring pad (9) are slidably arranged in the two ends of the fire retarding part (4), and the outer sides of the connecting plates (16) and the outer surfaces of the push rings (18) are coated with fire-resistant expansion coatings (19) for driving the push rings (18) to move outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791193.1U CN219435586U (en) | 2023-04-11 | 2023-04-11 | Low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791193.1U CN219435586U (en) | 2023-04-11 | 2023-04-11 | Low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219435586U true CN219435586U (en) | 2023-07-28 |
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ID=87344755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320791193.1U Active CN219435586U (en) | 2023-04-11 | 2023-04-11 | Low-smoke halogen-free flame-retardant fire-resistant cable for urban rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219435586U (en) |
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2023
- 2023-04-11 CN CN202320791193.1U patent/CN219435586U/en active Active
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