Double-layer co-extrusion insulation polyvinyl chloride flame-retardant wire

Abstract

The utility model discloses a double-layer co-extrusion insulating polyvinyl chloride flame-retardant wire, which comprises a copper conductor, an inner insulating layer is sleeved outside the copper conductor, an outer insulating layer is adhered and fixed outside the inner insulating layer, an installation structure is fixed outside the outer insulating layer, and a wear-resistant pipe is adhered and fixed outside the installation structure. The installation structure comprises a supporting pipe, a supporting plate arranged on the outer side of the supporting pipe and a supporting plate arranged on the supporting plate, a movable groove is formed in the middle of the supporting plate, a movable plate is fixed to the inner side of the supporting plate, and the movable plate is fixed into the movable groove through a locking bolt. The inner insulation layer and the outer insulation layer are fixed and clamped through the protrusions on the outer side of the inner insulation layer and the inner grooves in the inner side of the outer insulation layer, the fastening requirement is met, the groove structure formed in the outer side of the inner insulation layer can be fixedly connected with the clamping plates in the installation structure, and the supporting plate-supporting plate combined structure arranged on the outer side of the supporting pipe can protect the interior and support the exterior. And the effect of enhancing the structural stability and the structural strength is achieved.

Description

Technical Field

[0001] The utility model relates to the field of flame-retardant cables, in particular to a double-layer co-extruded insulated polyvinyl chloride flame-retardant electric wire. Background Art

[0002] Cables are usually rope-like cables made of several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and often twisted around a center. The entire outside is covered with a highly insulating covering. Cables have the characteristics of being energized inside and insulated outside. 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 strands of wires and an insulating layer, and are used to connect circuits, electrical appliances, etc.

[0003] The Chinese patent with publication number CN201438387U in the technology discloses a shallow-water oil well exploration cable, which includes communication cables, data cables, power cables, reinforced cable cores, and reinforced core fillings. Water-blocking glue is filled in the gaps between each cable and the cable core, and an inner lining layer and an outer sheath are wrapped around the cable and the core fillings; the power cable is composed of two cross-linked polyethylene insulated cores; the communication cable is composed of two pairs of shielded non-polar dielectric insulated cores, and has a shield woven with copper wire; the data cable is composed of two groups, each with four pairs, a total of 8 pairs, and 5 categories of data lines; the reinforced cable core is a plurality of strands of spun yarn twisted together; the outer layer of the outer sheath is a serrated structure.

[0004] The cable core in the above-mentioned cable is only protected under the outer sheath, and the cable is often bent during the cable laying process. After long-term bending, the cable core in the cable will be squeezed and the life of the cable will be shortened. In order to solve the problems raised in the above-mentioned background technology, the cable may be repeatedly bent during the operation and transformation of the mechanism in the equipment. After long-term repeated bending, the existing cable is prone to breakage and damage, and the number of bends cannot be displayed in a numerical form. The user cannot clearly judge the number of times the cable is bent and replace it in advance to protect the equipment. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a double-layer co-extruded insulated polyvinyl chloride flame-retardant electric wire. Through the inner insulation layer-outer insulation layer structure, the user can wrap the copper conductor in the inner insulation layer, and fix it through the protrusions on the outer side of the inner insulation layer and the inner groove on the inner side of the outer insulation layer to achieve the fastening requirements, and the groove structure opened on the outside can be connected and fixed with the clamping plate in the installation structure, and a support plate-support plate combination structure is provided on the outside of the support tube to protect the inside and support the outside, thereby enhancing the structural stability and strength.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a double-layer co-extruded insulated polyvinyl chloride flame-retardant electric wire, comprising a copper conductor, an inner insulating layer is sleeved on the outer side of the copper conductor, an outer insulating layer is adhesively fixed to the outer side of the inner insulating layer, a mounting structure is fixed to the outer side of the outer insulating layer, a wear-resistant tube is adhesively fixed to the outer side of the mounting structure, the mounting structure comprises a support tube, a support plate arranged on the outer side of the support tube and a support plate arranged on the support plate, a movable groove is opened in the middle of the support plate, a movable plate is fixed to the inner side of the support plate, and the movable plate is fixed in the movable groove by a locking bolt.

[0007] As a preferred technical solution of the utility model, two groups of movable grooves are symmetrically opened on the support plate, and the movable grooves are circular groove opening structures.

[0008] As a preferred technical solution of the utility model, multiple groups of support plates are fixed in an equidistant array on the outside of the support tube, and each group of support plates is an arc-shaped plate structure. A clamping plate is fixed on the inside of the support tube, and the mounting structure is a hard plastic structure.

[0009] As a preferred technical solution of the utility model, an inner groove is provided in the middle of the outer insulating layer, an inner groove is provided on the outer side of the inner groove, the size of the inner groove is adapted to the size of the protrusion, and multiple groups of grooves are equidistantly provided on the outer side of the outer insulating layer, the size of the grooves is adapted to the size of the card board.

[0010] As a preferred technical solution of the utility model, two groups of inner grooves are provided in the outer insulating layer.

[0011] As a preferred technical solution of the present invention, the inner insulating layer and the outer insulating layer are both made of flame-retardant polyvinyl chloride.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] 1. In this device, by setting up the inner insulating layer-outer insulating layer structure, the user can wrap the copper conductor in the inner insulating layer, and fix it by the protrusion on the outer side of the inner insulating layer and the inner groove on the inner side of the outer insulating layer to achieve the fastening needs, and the groove structure opened on the outside can be connected and fixed with the clamping plate in the installation structure, and the support plate-support plate combination structure is arranged on the outside of the support tube to protect the inside and support the outside, so as to enhance the structural stability and strength.

[0014] 2. In this device, the inner insulating layer and the outer insulating layer structure made of flame-retardant polyvinyl chloride material can protect the internal copper conductor and achieve flame retardant and insulating effects.

[0015] 3. In this device, by opening a movable groove structure on the support plate, the user can fix the support plate on the support plate through the movable plate and the locking bolts. Since the movable groove is a circular groove structure, its capsule-shaped structure can facilitate the user to fine-tune the distance between the support plate and the support tube, which is convenient for on-site installation and can also improve the torsion resistance and structural strength of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is one of the structural split diagrams of the utility model;

[0018] Figure 3 This is the second structural split diagram of the utility model;

[0019] Figure 4 This is the third structural disassembly diagram of the utility model;

[0020] Figure 5 for Figure 4 The structural diagram at A in the middle;

[0021] Figure 6 This is the fourth structural disassembly diagram of the utility model. ;

[0022] Figure 7 This is a structural cross-sectional view of the copper conductor of the utility model.

[0023] Among them: 1. Copper conductor; 2. Inner insulation layer; 21. Protrusion; 3. Outer insulation layer; 31. Inner groove; 32. Groove; 4. Installation structure; 41. Support tube; 42. Support plate; 43. Card plate; 44. Movable groove; 45. Support plate; 46. Movable plate; 47. Locking bolt; 5. Wear-resistant tube; 6. Flame-retardant polyvinyl chloride inner insulation; 7. Flame-retardant polyvinyl chloride outer insulation. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0025] Embodiment:

[0026] like Figure 1-7As shown, the utility model provides a double-layer co-extruded insulated polyvinyl chloride flame-retardant wire, including a copper conductor 1, an inner insulating layer 2 is sleeved on the outer side of the copper conductor 1, an outer insulating layer 3 is bonded and fixed to the outer side of the inner insulating layer 2, a mounting structure 4 is fixed to the outer side of the outer insulating layer 3, a wear-resistant tube 5 is bonded and fixed to the outer side of the mounting structure 4, the mounting structure 4 includes a support tube 41, a support plate 42 arranged on the outer side of the support tube 41, and a support plate 45 arranged on the support plate 42, a movable groove 44 is opened in the middle of the support plate 42, a movable plate 46 is fixed to the inner side of the support plate 45, and the movable plate 46 is fixed in the movable groove 44 by a locking bolt 47; by setting the inner insulating layer 2- The outer insulating layer 3 structure allows the user to wrap the copper conductor 1 in the inner insulating layer 2, and fix it with the protrusion 21 on the outer side of the inner insulating layer 2 and the inner groove 31 on the inner side of the outer insulating layer 3 to achieve the fastening requirement, and the groove 32 structure opened on the outer side can be connected and fixed with the clamping plate 43 in the mounting structure 4, and a support plate 42-support plate 45 combination structure is provided on the outer side of the support tube 41 to protect the inside and support the outside, thereby enhancing the structural stability and strength, and a flame-retardant polyvinyl chloride inner insulation 6 is provided on the outer side of the copper conductor 1, and the outer side of the flame-retardant polyvinyl chloride inner insulation 6 is wrapped with a flame-retardant polyvinyl chloride outer insulation 7.

[0027] In other embodiments, two groups of movable grooves 44 are symmetrically opened on the support plate 42, and the movable grooves 44 are circular groove structures; multiple groups of support plates 42 are fixed in an equidistant array on the outside of the support tube 41, and each group of support plates 45 is an arc-shaped plate structure, a clamping plate 43 is fixed on the inner side of the support tube 41, and the mounting structure 4 is a hard plastic structure; an inner groove 31 is opened in the middle of the outer insulating layer 3, and an inner groove 31 is opened on the outer side of the inner groove 31. The size of the inner groove 31 is adapted to the size of the protrusion 21, and multiple groups of grooves 32 are equidistantly opened on the outer side of the outer insulating layer 3, and the size of the grooves 32 is adapted to the size of the clamping plate 43; two groups of grooves 32 are opened in the outer insulating layer 3 Inner groove 31; inner insulating layer 2 and outer insulating layer 3 are both made of flame-retardant polyvinyl chloride; by setting the inner insulating layer 2 and outer insulating layer 3 structure of flame-retardant polyvinyl chloride material, the internal copper conductor 1 can be protected to achieve flame retardant and insulating effects; by opening a movable groove 44 structure on the support plate 42, the user can fix the support plate 45 on the support plate 42 through the movable plate 46 and the locking bolt 47, and since the movable groove 44 is a circular notch structure, its capsule-shaped structure can facilitate the user to fine-tune the distance between the support plate 45 and the support tube 41, which is convenient for on-site installation and can also improve the structure's anti-torsion installation and structural strength.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-layer co-extruded insulated polyvinyl chloride flame-retardant wire, comprising a copper conductor (1), characterized in that: The outer side of the copper conductor (1) is sleeved with an inner insulating layer (2), the outer side of the inner insulating layer (2) is bonded and fixed with an outer insulating layer (3), the outer side of the outer insulating layer (3) is fixed with a mounting structure (4), the outer side of the mounting structure (4) is bonded and fixed with a wear-resistant tube (5), the mounting structure (4) comprises a support tube (41), a support plate (42) arranged on the outer side of the support tube (41), and a support plate (45) arranged on the support plate (42), a movable groove (44) is opened in the middle of the support plate (42), a movable plate (46) is fixed on the inner side of the support plate (45), and the movable plate (46) is fixed in the movable groove (44) by a locking bolt (47).

2. The double-layer co-extruded insulated polyvinyl chloride flame-retardant wire according to claim 1, characterized in that: Two groups of movable grooves (44) are symmetrically opened on the support plate (42), and the movable grooves (44) are circular groove opening structures.

3. The double-layer co-extruded insulated polyvinyl chloride flame-retardant wire according to claim 1, characterized in that: The support plates (42) are fixed in multiple groups in an equidistant array on the outside of the support tube (41), and each group of the support plates (45) is an arc-shaped plate structure. A clamping plate (43) is fixed on the inside of the support tube (41), and the mounting structure (4) is a hard plastic structure.

4. The double-layer co-extruded insulated polyvinyl chloride flame-retardant wire according to claim 1, characterized in that: An inner groove (31) is provided in the middle of the outer insulating layer (3), an inner groove (31) is provided on the outer side of the inner groove (31), the size of the inner groove (31) is matched with the size of the protrusion (21), and a plurality of groups of grooves (32) are provided at equal intervals on the outer side of the outer insulating layer (3), the size of the grooves (32) is matched with the size of the card plate (43).

5. The double-layer co-extruded insulated polyvinyl chloride flame-retardant wire according to claim 1, characterized in that: Two groups of inner grooves (31) are provided in the outer insulating layer (3).

6. The double-layer co-extruded insulated polyvinyl chloride flame-retardant wire according to claim 1, characterized in that: The inner insulating layer (2) and the outer insulating layer (3) are both made of flame-retardant polyvinyl chloride.

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