Low-smoke halogen-free high-flame-retardant fireproof wire harness for ladder door

Abstract

The utility model relates to the technical field of elevator cables, and discloses a low-smoke halogen-free high-flame-retardant fireproof wire harness for an elevator door, which comprises a flame-retardant sleeve and a plurality of cable wire harnesses, the plurality of cable wire harnesses are positioned in the flame-retardant sleeve, the surfaces of conductors of the plurality of cable wire harnesses are coated with flame-retardant insulating layers, and the flame-retardant insulating layers are arranged in the flame-retardant sleeve. A plurality of cable wire harnesses coated with the flame-retardant insulating layers are arranged and twisted to form a cable wire core, and the surface of the cable wire core is coated with a flame-retardant belt. According to the low-smoke halogen-free high-flame-retardant fireproof wire harness, by arranging the flame-retardant sleeve, the flame-retardant insulating layer, the flame-retardant belt and the flame-retardant connecting assembly, when the cable is burnt, the flame-retardant connecting assembly made of non-combustible metal is used for blocking, and the rear part of a cable joint cannot be burnt; the flame-retardant sleeve, the flame-retardant insulating layer, the flame-retardant belt and the flame-retardant core are all made of flame-retardant low-smoke halogen-free polyolefin materials, dense smoke and toxic gas cannot be generated during combustion, meanwhile, the high-flame-retardant effect can be achieved, the voltage can be kept to work normally during the period, and necessary conditions are provided for escape and rescue of personnel.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator cable technical field, concretely is a low smoke halogen -free high flame -retardant fire -wire harness for the door of elevator. BACKGROUND

[0002] The elevator cable is a kind of special cable used in elevator system, mainly responsible for the electrical transmission and communication function of elevator.The elevator cable is usually composed of multiple insulated wires, and these wires are wrapped in an insulating protective layer to ensure the safe and reliable transmission of electrical signals.

[0003] In places with a large number of people, the elevator door needs to ensure 2 hours of fire safety requirements, and the wire harness for the door system must ensure that it cannot be burned through and cannot introduce fire into the shaft and the car when the door is burned by flame. The existing elevator wire harness, including the flame-retardant fire resistance of the door wire harness, cannot meet this requirement, which poses a threat to the safety of elevator passengers. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a low smoke halogen -free high flame -retardant fire -wire harness for the door of elevator, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: a low smoke halogen -free high flame -retardant fire -wire harness for the door of elevator, comprising: a flame -retardant sleeve and multiple cable harnesses, multiple cable harnesses are located inside the flame -retardant sleeve, the surface of the conductor of multiple cable harnesses is covered with a flame -retardant insulating layer, multiple cable harnesses covered with a flame -retardant insulating layer are arranged and twisted to form a cable core, and the surface of the cable core is covered with a flame -retardant tape, a flame -retardant core is arranged between multiple cable harnesses, the surface of the flame -retardant tape is connected with the inner wall of the flame -retardant sleeve, and the surface of the flame -retardant sleeve is provided with a flame -retardant connecting assembly.

[0006] Preferably, the flame -retardant sleeve, the flame -retardant insulating layer, the flame -retardant tape and the flame -retardant core are all made of flame -retardant low smoke halogen -free polyolefin material.

[0007] Preferably, the flame -retardant core is made of irradiation crosslinking 105 flame -retardant low smoke halogen -free polyolefin material.

[0008] Preferably, the flame -retardant connecting assembly comprises a stainless steel flange, a metal hose joint and a metal connecting hose, one end of the metal hose joint is connected with the metal connecting hose, the other end of the metal hose joint is connected with the stainless steel flange, and the surface of the metal hose is connected with the inner wall of the flame -retardant sleeve.

[0009] Preferably, one end of the cable harness extends to the outside of the stainless steel flange, and the end of the cable harness extending to the outside of the stainless steel flange is covered with ceramic fiber adhesive tape.

[0010] Preferably, the cable harness is a plurality of tin-plated soft copper conductor wires twisted together.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The low-smoke halogen-free high-flame-retardant fireproof cable harness is provided with the flame-retardant sleeve, the flame-retardant insulation layer, the flame-retardant tape and the flame-retardant connecting assembly, the flame-retardant connecting assembly made of non-combustible metal is used for blocking when the cable burns, the rear of the cable joint cannot burn, the flame-retardant sleeve, the flame-retardant insulation layer, the flame-retardant tape and the flame-retardant core are all made of flame-retardant low-smoke halogen-free polyolefin material, no dense smoke and toxic gas is generated during burning, and the high-flame-retardant effect is achieved, so that the voltage can normally work during this period, and necessary conditions are provided for personnel escape and rescue. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a cross-sectional structure schematic view of the utility model;

[0014] Fig. 2 It is a flame-retardant connecting assembly side view structure schematic view of the utility model.

[0015] In the drawing: 1, flame-retardant sleeve; 2, cable harness; 3, flame-retardant insulation layer; 4, flame-retardant tape; 5, flame-retardant core; 6, flame-retardant connecting assembly; 61, stainless steel flange; 62, metal hose joint; 63, metal connecting hose; 7, ceramic fiber adhesive tape. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figs. 1-2 A low-smoke halogen-free high-flame-retardant fireproof cable harness for ladder door comprises a flame-retardant sleeve 1 and a plurality of cable harnesses 2, the plurality of cable harnesses 2 are located inside the flame-retardant sleeve 1, the surfaces of the conductors of the plurality of cable harnesses 2 are covered with flame-retardant insulation layers 3, the plurality of cable harnesses 2 covered with the flame-retardant insulation layers 3 are arranged and twisted to form a cable core, the surface of the cable core is covered with a flame-retardant tape 4, a flame-retardant core 5 is arranged between the plurality of cable harnesses 2, the surface of the flame-retardant tape 4 is connected with the inner wall of the flame-retardant sleeve 1, and the surface of the flame-retardant sleeve 1 is provided with a flame-retardant connecting assembly 6.

[0018] The flame-retardant sleeve 1, the flame-retardant insulation layer 3, the flame-retardant tape 4 and the flame-retardant core 5 are all made of flame-retardant low-smoke halogen-free polyolefin material.

[0019] The flame-retardant core 5 is made of a radiation cross-linked 105° flame-retardant low-smoke halogen-free polyolefin material.

[0020] The flame-retardant connecting assembly 6 comprises a stainless steel flange 61, a metal hose joint 62 and a metal connecting hose 63.

[0021] The cable harness 2 extends to the outside of the stainless steel flange 61, and the end of the cable harness 2 extending to the outside of the stainless steel flange 61 is covered with a ceramic fiber tape 7.

[0022] The cable harness 2 is made of a plurality of tinned soft copper conductor wires.

[0023] When the cable burns, the connecting part is blocked by the non-combustible stainless steel flange 61, the metal hose joint 62 and the metal connecting hose 63, and the rear of the cable joint cannot burn.

[0024] It should be noted that, in the present text, the relational terms such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply any actual such relationship or order between or among the entities or operations, and the terms "comprises", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0025] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low smoke zero halogen high flame retardant fire resistant wire harness for ladder door, characterized by, The application relates to a flame-retardant cable sleeve (1) and a plurality of cable bundles (2), wherein the plurality of cable bundles (2) are arranged inside the flame-retardant cable sleeve (1), the surfaces of the conductors of the plurality of cable bundles (2) are covered with flame-retardant insulation layers (3), the plurality of cable bundles (2) covered with the flame-retardant insulation layers (3) are arranged and twisted to form a cable core, the surface of the cable core is covered with a flame-retardant tape (4), a flame-retardant core (5) is arranged between the plurality of cable bundles (2), the surface of the flame-retardant tape (4) is connected with the inner wall of the flame-retardant cable sleeve (1), and the surface of the flame-retardant cable sleeve (1) is provided with a flame-retardant connecting assembly (6). The flame-retardant cable sleeve (1), the flame-retardant insulation layer (3), the flame-retardant tape (4) and the flame-retardant core (5) are all made of flame-retardant low-smoke halogen-free polyolefin material.

2. A low smoke zero halogen high flame retardant fire resistant wire harness for ladder door according to claim 1, characterized in that, The flame-retardant core (5) is made of radiation crosslinking 105 DEG flame-retardant low-smoke halogen-free polyolefin material.

3. The low smoke zero halogen high flame retardant fire resistant wire harness for ladder door according to claim 2, characterized in that, The flame-retardant connecting assembly (6) comprises a stainless steel flange (61), a metal hose joint (62) and a metal connecting hose (63), one end of the metal hose joint (62) is connected with the metal connecting hose (63), the other end of the metal hose joint (62) is connected with the stainless steel flange (61), and the surface of the metal hose is connected with the inner wall of the flame-retardant cable sleeve (1).

4. The low smoke zero halogen high flame retardant fire resistant wire harness for ladder door according to claim 1, characterized in that, One end of the cable bundle (2) extends to the outside of the stainless steel flange (61), and the end of the cable bundle (2) extending to the outside of the stainless steel flange (61) is covered with ceramic fiber tape (7).

5. The low smoke zero halogen high flame retardant fire resistant wire harness for ladder door according to claim 4, characterized in that, The cable bundle (2) is twisted by a plurality of tinned soft copper conductor wires.

6. A low smoke zero halogen high flame retardant fire resistant wire harness for ladder door according to claim 1, characterized in that, ​

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