Butt joint structure of metal cable and non-metal cable

Abstract

The utility model discloses a butt joint structure of a metal cable and a non-metal cable, which is characterized in that the tail part of the metal cable is inserted into the head part of a single-woven aramid rope, and the insertion length is at least 30cm. According to the butt joint structure disclosed by the utility model, by utilizing the characteristic that the braided structure of the single braided aramid rope without an inner core gathers towards the rope core when the single braided aramid rope is pulled, the metal cable is tightly held by the single braided aramid rope; in addition, the metal cable is formed by multiple wires into strands and multiple strands into a rope in the rotating direction, a rotating direction gap between the strands exists on the outer surface of the rope, and when the non-metal cable is stressed and contracted, the non-metal cable can be embedded into the gap in the rotating direction, so that the contact area of the non-metal cable and the metal cable is increased, the friction force between the non-metal cable and the metal cable is increased, and the tensile strength and looseness after butt joint are guaranteed. Meanwhile, the non-metal cable contracts at the butt joint under the action of tension, so that the outer diameter of the cable at the butt joint is reduced and is closer to the diameter of the metal cable.

Description

Technical Field

[0001] This utility model relates to the field of metal cables, specifically to a docking structure between a metal cable and a non-metal cable, applicable to environments where one end of the cable needs to be conductive and the other end needs to be insulated, i.e., electrical insulation design between the end of the metal cable and the fixed end. Background Technology

[0002] Traditional cables are either metal or non-metal. There is currently no cable available that can conduct electricity at one end, insulate at the other end, and have a tensile strength no less than that of a metal (or non-metal) cable.

[0003] A metal cable is wound around a drum. After the metal cable is fully released, the end of the metal cable must be electrically insulated from the drum. There is an urgent need for a connection structure between the metal cable and the non-metal cable that can ensure the tensile strength of the connection, keep the cable diameter at the joint relatively constant, and also ensure that the cable can be smoothly retrieved onto the drum.

[0004] The conventional splicing method is to fold the cable in half and tie a knot to connect it, or to use metal rope buckles for metal cables and insert and weave non-metal cables together before connecting them. Although the above methods can ensure the splicing strength and insulation requirements, the cross-section of the cable at the splicing point changes too much compared to the cable itself, which is no longer suitable for winding the cable on the drum. This limits the regular winding of the cable and affects the number of times the cable can be released and recycled.

[0005] Currently, there are no relevant patents or documents in China regarding the connection between metal cables and non-metal cables. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a connection structure for conventional metal cables and non-metal cables.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An improved structure for connecting a metal cable and a non-metal cable is described in that the tail of the metal cable is inserted into the head of a single-braided aramid rope for a length of at least 30 cm.

[0009] Furthermore, resin adhesive is applied between the head of the single-braided aramid rope and the metal cable.

[0010] Furthermore, the length of the resin adhesive is at least 10 mm.

[0011] Furthermore, the diameter of the 12 strands of single-braided aramid rope woven together is 3mm.

[0012] Furthermore, the tail of the single-braided aramid rope is mounted on a metal roller.

[0013] The beneficial effects of this utility model are:

[0014] The docking structure disclosed in this utility model utilizes the coreless braided structure of a single-braided aramid rope, and the characteristic that the braided structure converges towards the core under tension, allowing the single-braided aramid rope to tightly hold the metal cable. Furthermore, the metal cable is composed of multiple strands wound in different directions, creating gaps between the strands on its outer surface. When the non-metallic cable contracts under stress, it follows the direction of rotation and embeds itself into these gaps, increasing the contact area between the non-metallic and metal cables and enhancing their friction. This ensures the tensile strength after docking and prevents loosening. Simultaneously, the contraction of the non-metallic cable at the docking point under tension reduces its outer diameter, bringing it closer to the diameter of the metal cable.

[0015] The docking structure disclosed in this utility model ensures that the tensile strength of the docking part is no less than that of metal cables and single-braided aramid ropes, and realizes an electrical insulation design in which the metal end of the cable is conductive and the non-metallic end is insulating. Without reducing the overall tensile strength of the cable, this provides a feasible solution for the electrical insulation design of a certain cable antenna, greatly reducing the design difficulty of the system's electrical insulation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a single-braided aramid rope;

[0017] Figure 2 This is a schematic diagram illustrating the formation process of the docking structure disclosed in this utility model;

[0018] Figure 3 This is a schematic diagram showing a metal cable and a non-metal cable joined together and wound around a metal drum.

[0019] Figure 4 This is a schematic diagram showing the exposed docking position after the metal cable is released. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Example 1 discloses a docking structure for a metal cable and a non-metal cable, wherein the tail of the metal cable (metal wire rope) is inserted into... Figure 1 The head of the single-braided aramid rope (non-metallic cable) shown is inserted for at least 30cm. Resin adhesive is applied between the head of the single-braided aramid rope and the metal cable and cured for at least 10mm.

[0022] The splicing structure of metal cables and non-metal cables is as follows: Figure 2 The single-braided aramid rope is elastic. A portion of the single-braided aramid rope 1 is compressed from the head, and a section of metal cable 2 is inserted. This step is repeated until the required length L is inserted. Finally, the head of the single-braided aramid rope is treated to prevent loosening, so that the non-metallic cable and the metal cable are relatively fixed.

[0023] Metal wire rope specifications: 304 / 7X19-WSC-3.0, 12 strands of single-braided aramid rope with a diameter of 3mm, connected by butt joints using the method described above, with an insertion length of at least 30cm. For example... Figure 3 As shown, after docking, the non-metallic and metallic cables can be regularly wound around the metal drum 3; as Figure 4 As shown, after the metal cable is released from the metal drum and the docking point leaves the drum, electrical insulation is achieved between the metal drum and the metal cable.

Claims

1. A connection structure for a metal cable and a non-metal cable, characterized in that: Insert the end of the metal cable into the head of the single-braided aramid rope, with an insertion length of at least 30cm; apply resin glue between the head of the single-braided aramid rope and the metal cable.

2. The docking structure between the metal cable and the non-metal cable according to claim 1, characterized in that: The length of the resin adhesive must be at least 10mm.

3. The docking structure between the metal cable and the non-metal cable according to claim 1, characterized in that: The diameter of the 12 strands of single-braided aramid rope braided together is 3mm.

4. The docking structure between the metal cable and the non-metal cable according to claim 1, characterized in that: The tail of the single-braided aramid rope is mounted on a metal drum.

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