Flame-retardant control cable

Abstract

The utility model belongs to the technical field of control cables, and particularly relates to a flame-retardant control cable, which comprises a cable core, flame-retardant plastic is arranged outside the cable core, a buffer groove is arranged on the inner side of the flame-retardant plastic, a flame-retardant groove is arranged outside the flame-retardant plastic, an armor layer is wound outside the flame-retardant plastic, a coating layer is arranged outside the armor layer, and a flame-retardant layer is arranged outside the coating layer. A butt joint device for wrapping the flame-retardant plastics outside the cable core is arranged at the joint of the flame-retardant plastics and the cable core, and a glue brush for bonding the two flame-retardant plastics outside the cable core is arranged on the butt joint device; firstly, the flame-retardant plastic is arranged, the flame-retardant grooves are formed in the outer side of the flame-retardant plastic, the flame-retardant grooves can effectively increase the contact area between the flame-retardant plastic and a heat source, and therefore the more effective flame-retardant effect is achieved, secondly, the cable cores are distributed in the flame-retardant plastic in a wavy mode through the arranged buffer grooves, and through the wavy structure and the toughness of the flame-retardant plastic, the flame-retardant effect is improved. And the tensile effect of the cable is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of control cables, in particular to a flame-retardant control cable. Background Art

[0002] Control cables are PVC insulated and PVC sheathed control cables suitable for industrial and mining enterprises, energy and transportation departments, and for control and protection of lines with rated voltages below 450 / 750 volts. Flame-retardant cables refer to cables that, under specified test conditions, will burn when the sample is burned. After the test fire source is removed, the spread of the flame is limited to a limited range, and the residual flame or residual burning can extinguish itself within a limited time. The fundamental characteristic is that it may be burned and unable to operate in the event of a fire, but it can prevent the spread of the fire. In layman's terms, if a fire occurs in the wire, the burning can be limited to a local range, preventing it from spreading, thus protecting various other equipment and avoiding greater losses.

[0003] However, the flame retardant part of the existing flame retardant cable has a small area, and the flame retardant structure can only play a flame retardant purpose. In order to ensure the tensile strength, tensile aluminum wires need to be added inside the control cable, which increases the weight. At the same time, space needs to be left for placement, which increases the overall size of the cable.

[0004] In order to solve the above problems, this application proposes a flame retardant control cable. Utility Model Content

[0005] The purpose of the utility model is to provide a flame retardant control cable, which solves the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model discloses a flame retardant control cable, comprising a cable core, wherein flame retardant plastic is arranged on the outside of the cable core, a buffer groove is arranged on the inside of the flame retardant plastic, a flame retardant groove is arranged on the outside of the flame retardant plastic, an armor layer is wound around the outside of the flame retardant plastic, a coating layer is arranged on the outside of the armor layer, a butt joint for wrapping the flame retardant plastic on the outside of the cable core is arranged at the connection between the flame retardant plastic and the cable core, and a rubber brush for bonding two flame retardant plastics to the outside of the cable core is arranged on the butt joint.

[0008] Furthermore, the buffer groove is arranged in a wave shape, and the cable core is wrapped by the flame-retardant plastic to form the same shape as the flame-retardant plastic.

[0009] Furthermore, the flame retardant plastic completely wraps the cable core, the flame retardant groove is opened on a side close to the armor layer, and the side of the flame retardant groove close to the armor layer is open.

[0010] Furthermore, the flame retardant plastic is in two pieces and is wrapped around the outside of the cable core after being butted together. The two pieces of flame retardant plastic are fixedly wrapped around the outside of the cable core by applying glue with a glue brush.

[0011] Furthermore, a slide seat is fixedly mounted on the docking device, the glue brush is slidably mounted on the slide seat, a glue box is also arranged on the docking device, a pump body is connected to the glue box, and a hose is arranged between the pump body and the glue brush.

[0012] Furthermore, the rubber brush is located at the gap before the two flame-retardant plastics are butted together, and the rubber brush slides on the slide seat following the butt joint path of the two flame-retardant plastics.

[0013] Furthermore, the glue inside the glue box is quantitatively delivered to the glue brush through the pump body and the hose, and the glue brush contacts the butt joint surface of the flame-retardant plastic.

[0014] The utility model has the following beneficial effects:

[0015] The utility model can achieve a flame retardant effect by setting the flame retardant plastic, which is a composite flame retardant material, and at the same time, a flame retardant groove is set to increase the contact area between the flame retardant plastic and the outside. Through the large contact area, it can quickly absorb heat, and at the same time, after absorbing heat, decompose gas to isolate oxygen, effectively improving the flame retardant effect of the buffer groove;

[0016] The utility model arranges a wavy buffer groove inside the flame retardant plastic, and the buffer groove can form a wavy distribution of the cable core in the cable. Through the cooperation of the buffer groove and the flame retardant plastic, the tensile resistance of the cable core can be improved while being flame retardant. There is no need to use aluminum wire, etc., and both the flame retardant effect and the cable size are taken into consideration.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a partial production step of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure from a side view;

[0021] Figure 3 This is a schematic diagram of the structure of the cable core and the flame-retardant plastic separation in the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the flame retardant plastic and cable core combination component in the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. Cable core; 2. Flame retardant plastic; 3. Buffer groove; 4. Flame retardant groove; 5. Armor layer; 6. Coating layer; 7. Connector; 8. Sliding seat; 9. Glue brush; 10. Glue box; 11. Pump body; 12. Hose. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] See also Figure 1-4 As shown, the utility model is a flame retardant control cable, including a cable core 1, a flame retardant plastic 2 is arranged on the outside of the cable core 1, a buffer groove 3 is opened on the inside of the flame retardant plastic 2, a flame retardant groove 4 is opened on the outside of the flame retardant plastic 2, an armor layer 5 is wrapped around the outside of the flame retardant plastic 2, a coating layer 6 is arranged on the outside of the armor layer 5, a connector 7 for wrapping the flame retardant plastic 2 on the outside of the cable core 1 is arranged at the connection between the flame retardant plastic 2 and the cable core 1, and a glue brush 9 is provided on the connector 7 for bonding two flame retardant plastics 2 to the outside of the cable core 1. In this embodiment, there are two contact surfaces between the two flame retardant plastics 2, and the glue brush 9 only bonds one of the contact surfaces, and does not bond the other side, which can ensure that the cable core 1 is not easy to fall off automatically inside the flame retardant plastic 2 during processing, and can also facilitate cable core stripping.

[0028] Among them, the buffer groove 3 is set in a wavy shape, and the cable core 1 is wrapped by the flame retardant plastic 2 to form the same shape as the flame retardant plastic 2. In this embodiment, the shape of the buffer groove 3 changes the shape of the cable core 1 in the cable. The wavy structure can make the flame retardant plastic 2 have an effective buffering effect while being flame retardant.

[0029] Among them, the flame retardant plastic 2 completely wraps the cable core 1, the flame retardant groove 4 is opened on the side close to the armor layer 5, and the side of the flame retardant groove 4 close to the armor layer 5 is open. In this embodiment, the flame retardant groove 4 fully ensures the contact between the flame retardant plastic 2 and the heat, effectively improving the flame retardant effect, and the flame retardant plastic 2 can fully isolate oxygen through thermal energy.

[0030] Among them, there are two flame retardant plastics 2 and they are wrapped around the outside of the cable core 1 after being connected. The two flame retardant plastics 2 are fixed and wrapped around the outside of the cable core 1 by gluing with a glue brush 9. In this embodiment, this method facilitates the assembly of the flame retardant plastic 2 and the cable core 1, and the glue structure can ensure the reliability of the two flame retardant plastics 2 wrapped around the outside of the cable core 1.

[0031] Among them, a slide seat 8 is fixedly installed on the docking device 7, and a glue brush 9 is slidably installed on the slide seat 8. A glue box 10 is also provided on the docking device 7. A pump body 11 is connected to the glue box 10. A hose 12 is provided between the pump body 11 and the glue brush 9. In this embodiment, quantitative glue supply is achieved through the hose 12 to ensure uniformity of glue coating.

[0032] Among them, the glue brush 9 is located in the gap before the two flame retardant plastics 2 are connected. The glue brush 9 slides on the slide seat 8 according to the connection path of the two flame retardant plastics 2. In this embodiment, by setting the sliding structure of the glue brush 9, the glue application position can be automatically adjusted according to the connection position of the flame retardant plastic 2 to realize automatic gluing.

[0033] Among them, the glue inside the glue box 10 is quantitatively delivered to the glue brush 9 through the pump body 11 and the hose 12, and the glue brush 9 contacts the docking surface of the flame retardant plastic 2. In this embodiment, the flame retardant plastic 2 is coated with glue through contact with the glue brush 9, and then the two flame retardant plastics 2 are immediately bonded together under the action of the docking device 7 to wrap the cable core 1.

[0034] It can be understood that first, a flame retardant plastic 2 is arranged and a flame retardant groove 4 is opened on its outer side. The flame retardant groove 4 can effectively increase the contact area between the flame retardant plastic 2 and the heat source, thereby achieving a more effective flame retardant effect. Secondly, the buffer groove 3 is arranged to distribute the cable core 1 in the flame retardant plastic 2 in a wave shape. Through the wavy structure and the toughness of the flame retardant plastic 2, the tensile resistance of the cable is enhanced.

[0035] A specific application of this embodiment is: the armor layer 5 is formed by an armoring device, the coating layer 6 is formed by a coating device, the cable core 1 passes through the butt joint 7, passes through the armoring device and the coating device, and is pulled by a pulling device;

[0036] When the cable core 1 passes through the docking device 7, two flame retardant plastics 2 are docked on the outside of the cable core 1, and the cable core 1 is bent under the action of the buffer groove 3. At the same time, before the two buffer grooves 3 are completely docked, the glue brush 9 will apply glue to the contact surfaces of the two buffer grooves 3. The glue brush 9 will slide adaptively on the slide seat 8 according to the different docking positions of the two buffer grooves 3. After the glue coating is completed, the buffer groove 3 passes through the docking device 7. At this time, the two buffer grooves 3 are fixedly wrapped on the outside of the flame retardant plastic 2, and then the armor layer 5 is wrapped by the armoring equipment, and finally the coating layer 6 is formed by the coating equipment to produce a flame retardant control cable.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A flame retardant control cable, comprising a cable core (1), characterized in that: The cable core (1) is provided with a flame retardant plastic (2) on the outside, a buffer groove (3) is provided on the inside of the flame retardant plastic (2), a flame retardant groove (4) is provided on the outside of the flame retardant plastic (2), an armor layer (5) is wrapped around the outside of the flame retardant plastic (2), a coating layer (6) is provided on the outside of the armor layer (5), and a butt joint (7) for wrapping the flame retardant plastic (2) on the outside of the cable core (1) is provided at the connection between the flame retardant plastic (2) and the cable core (1), and a glue brush (9) is provided on the butt joint (7) for bonding two flame retardant plastics (2) to the outside of the cable core (1).

2. A flame-retardant control cable according to claim 1, characterized in that: The buffer groove (3) is arranged in a wave shape, and the cable core (1) is formed into the same shape as the flame-retardant plastic (2) after being wrapped by the flame-retardant plastic (2).

3. A flame-retardant control cable according to claim 2, characterized in that: The flame retardant plastic (2) completely wraps the cable core (1), the flame retardant groove (4) is opened on a side close to the armor layer (5), and the side of the flame retardant groove (4) close to the armor layer (5) is open.

4. A flame-retardant control cable according to claim 1, characterized in that: The flame retardant plastic (2) consists of two pieces and are wrapped around the outside of the cable core (1) after being butt-jointed. The two pieces of flame retardant plastic (2) are fixedly wrapped around the outside of the cable core (1) by applying glue with a glue brush (9).

5. The flame-retardant control cable according to claim 1, characterized in that: A slide seat (8) is fixedly mounted on the docking device (7), and the glue brush (9) is slidably mounted on the slide seat (8). A glue box (10) is also arranged on the docking device (7), and a pump body (11) is connected to the glue box (10). A hose (12) is arranged between the pump body (11) and the glue brush (9).

6. A flame-retardant control cable according to claim 5, characterized in that: The rubber brush (9) is located at the gap before the two flame retardant plastics (2) are butted together, and the rubber brush (9) follows and slides on the slide seat (8) according to the butt-jointing path of the two flame retardant plastics (2).

7. A flame-retardant control cable according to claim 5, characterized in that: The glue inside the glue box (10) is quantitatively delivered to the glue brush (9) through the pump body (11) and the hose (12), and the glue brush (9) is in contact with the butt joint surface of the flame retardant plastic (2).

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