Extremely cold resistant flexible wire cable

Abstract

The utility model relates to an extremely cold resistant flexible wire cable, which comprises a plurality of insulating wire cores, and is characterized in that each insulating wire core comprises a conductor and an insulating layer which is wrapped on the conductor and is made of a cross-linked EPR (Ethylene Propylene Rubber) material; a belting layer or an armor layer is arranged on the outer wall of each insulating wire core; an insulating wire core cavity enclosed by the belting layer or the armor layer is filled with a filling layer formed by PET fiber ropes; the outer side of the belting layer or the armor layer is provided with a sheath layer made of TPU materials, and the outer side of the sheath layer is provided with a woven reinforcing layer woven by PET fibers. The low-temperature-resistant cable has the advantages of being good in low-temperature-resistant performance, good in bending performance, good in physical and mechanical performance and the like, laying construction of workers under extremely cold conditions is facilitated, and equipment can drag the cable to move back and forth or bend in a low-temperature environment.

Description

Technical Field

[0001] The utility model relates to the technical field of wires and cables, in particular to special wires and cables required for handling robots, mechanical arms and other equipment used in extremely cold environments (such as cold storages, plateau freezing environments, etc.). Background Art

[0002] With the rapid development of intelligent technology, automated and intelligent equipment is increasingly being used across various industries. This is particularly true in cold chain logistics, high-altitude operations, and polar expeditions. Automated equipment such as handling robots and manipulators has become crucial for improving production efficiency and ensuring personnel safety. However, these devices face significant challenges in maintaining stable operation in extremely cold environments. This is particularly true for wires and cables, which serve as the medium for energy and information transmission. Their performance is directly impactful on the reliability of the entire system.

[0003] Traditional wires and cables are prone to hardening and embrittlement in low-temperature environments, resulting in a significant decrease in bending performance and even breakage, seriously impacting equipment operation. Furthermore, extreme cold conditions place higher demands on the cable's insulation material, conductor resistivity, and overall physical and mechanical properties. Furthermore, with growing global awareness of environmental protection, the environmental safety and sustainability of wires and cables have become crucial factors that cannot be ignored.

[0004] Existing technology is insufficient

[0005] Limited low-temperature resistance: Most wires and cables on the current market are difficult to maintain good flexibility and mechanical strength at extremely low temperatures of -75°C.

[0006] Poor bending performance: The cable hardens in low temperature environments, and the bending radius increases, which cannot meet the frequent bending requirements of automation equipment.

[0007] Unstable physical, mechanical and electrical properties: Under extreme conditions, the cable's insulation layer may crack and the conductor resistivity may change, affecting the stability of signal transmission and power supply.

[0008] The aim is to provide an extremely cold-resistant flexible wire and cable with a simple structure, excellent low-temperature resistance (-75°C), excellent bending performance, stable physical and mechanical properties and electrical properties, and compliance with environmental protection and safety requirements. Utility Model Content

[0009] In response to the problems existing in the existing technology, the utility model provides an extremely cold-resistant flexible wire and cable. Through structural design, the cable achieves excellent low-temperature resistance (-75°C), high bending flexibility, stable physical and mechanical properties and electrical properties, as well as good environmental protection and safety in extreme low-temperature environments, thereby meeting the high requirements of automation equipment for wires and cables under extremely cold conditions such as cold storage and plateau freezing environments, and promoting the application and development of intelligent technology in a wider range of fields.

[0010] The utility model is implemented as follows: an extreme cold resistant flexible wire and cable comprises a plurality of insulated wire cores, characterized in that: each insulated wire core comprises a conductor and an insulating layer wrapped on the conductor and made of a cross-linked EPR material; the outer walls of the plurality of insulated wire cores are provided with a tape layer or an armor layer; the insulating wire core cavity enclosed by the tape layer or the armor layer is filled with a filling layer formed by a PET fiber rope; a sheath layer made of a TPU material is provided on the outer side of the tape layer or the armor layer, and a braided reinforcement layer woven from PET fibers is provided on the outer side of the sheath layer.

[0011] In the above technical solution, preferably, the conductor is composed of soft copper wire, and the conductor is a flexure-resistant dense-pitch stranded conductor.

[0012] In the above technical solution, preferably, the pitch is not greater than 6 times the twisted outer diameter.

[0013] In the above technical solution, preferably, the conductor has a nominal cross-section of 0.5 to 300 mm 2 .

[0014] In the above technical solution, preferably, the thickness of the insulating layer is 0.5-1.8 mm.

[0015] In the above technical solution, preferably, the wrapping layer is made of PET fiber tape or glass fiber tape.

[0016] In the above technical solution, preferably, the thickness of the sheath is 0.8-3.0 mm.

[0017] The advantages and positive effects of the utility model are:

[0018] The extreme cold-resistant flexible wire and cable provided by this utility model achieves exceptional performance in extreme low-temperature environments through meticulous design and the use of high-quality materials. Specifically, the cable utilizes soft copper wire that complies with the GB / T 3956-2008 standard as its conductor, ensuring excellent conductivity and flex resistance, allowing the cable to withstand frequent bending in complex environments without damage. The insulation layer is constructed from materials with excellent low-temperature performance and mechanical properties, and its thickness is strictly controlled to ensure insulation reliability and wear resistance in extreme cold conditions, thereby ensuring stable electrical performance.

[0019] The filling layer uses PET fiber rope, which not only enhances the cable's structural stability but also provides additional resistance to low temperatures, weather, and chemical corrosion, enabling the cable to maintain stable performance in a variety of harsh environments. The tape layer and sheath layer are made of PET or glass fiber tape and TPU material, respectively, further improving the cable's wear resistance, low temperature resistance, and oil, acid, and alkali resistance, ensuring the cable's stability and reliability during long-term use.

[0020] The braided reinforcement layer is made of wear-resistant and low-temperature-resistant PET fiber, significantly enhancing the cable's wear resistance, low-temperature resistance, and tensile strength, thereby significantly extending the cable's service life. Furthermore, the cable is environmentally friendly and safe, meeting modern environmental standards.

[0021] In summary, the extreme cold-resistant flexible wire and cable of this utility model demonstrates excellent low-temperature resistance, high bending flexibility, stable physical, mechanical, and electrical properties, as well as excellent environmental safety and durability in extremely low-temperature environments. These outstanding properties enable the cable to meet the stringent wire and cable requirements of automation equipment in extremely cold conditions, such as cold storage and plateau freezing environments, providing strong support for the application and development of intelligent technology in a wider range of fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of an extreme cold-resistant flexible wire and cable provided in Example 1 of the present utility model;

[0023] In the figure: 1. Conductor; 2. Insulation layer; 3. Filling; 4. Tape layer; 5. Jacket layer; 6. Braided reinforcement layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Example:

[0026] See also Figure 1 This embodiment provides an extreme cold resistant flexible wire and cable, comprising a conductor 1, an insulating layer 2, a filling layer 3, a tape layer 4, a sheath layer 5 and a braided reinforcement layer 6; the insulated core is composed of an insulating layer 2 extruded outside the conductor 1, and a filling layer 3 is provided in the gaps between the cores when the insulated cores are twisted into a cable, a tape layer 4 is provided on the outside of the insulating core, a sheath layer 5 is extruded outside the tape layer 4, and a braided reinforcement layer 6 is provided outside the sheath layer.

[0027] Conductor 1 is made of soft copper wire in accordance with GB / T 3956-2008. The conductor is a stranded conductor. The conductor structure is specially designed to be resistant to bending. The overall performance of the conductor complies with the relevant provisions of the fifth or sixth stranded conductor in GB / T3956-2008. The pitch is not greater than 6 times the outer diameter of the strand. The nominal cross-section of the conductor is 0.5 to 300 mm. 2 .

[0028] The thickness of the insulating layer 2 is 0.5-1.8 mm, and its specific thickness is the thickness of the product that meets the corresponding specifications of GB / T12706-2008, GB / T5023-2008 or JB 8734-2016. The material has excellent low-temperature performance, physical and mechanical properties, wear resistance, etc.

[0029] Filling 3 uses PET fiber rope. This material not only has good low temperature resistance and excellent physical and mechanical properties, but also has good weather resistance, acid and alkali resistance and chemical resistance. It has excellent light resistance and water resistance, can withstand high and low temperature conditions, and can also withstand humidity, oil and acid environments.

[0030] The wrapping layer 4 is made of PET fiber tape or glass fiber tape.

[0031] The sheath layer 5 is made of TPU material with good wear resistance and low temperature resistance. The sheath thickness is 0.8-3.0mm. The specific thickness meets the thickness requirements of the corresponding specifications of the relevant product standards. The material has good low temperature resistance, excellent physical and mechanical properties, oil resistance, acid and alkali resistance, etc.

[0032] The braided reinforcement layer is made of PET fiber material with good wear resistance and low temperature resistance according to a specially designed weaving process. The braided reinforcement layer makes the cable have good wear resistance, low temperature resistance and tensile strength, thereby increasing the service life of the cable.

[0033] In summary, the extreme cold-resistant flexible wire and cable of this utility model demonstrates excellent low-temperature resistance, high bending flexibility, stable physical, mechanical, and electrical properties, as well as excellent environmental safety and durability in extremely low-temperature environments. These outstanding properties enable the cable to meet the stringent wire and cable requirements of automation equipment in extremely cold conditions, such as cold storage and plateau freezing environments, providing strong support for the application and development of intelligent technology in a wider range of fields.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An extreme cold-resistant flexible wire and cable, comprising a plurality of insulated cores, characterized in that: Each insulated wire core includes a conductor and an insulating layer made of cross-linked EPR material wrapped around the conductor; the outer walls of several insulated wire cores are provided with a tape layer or an armor layer; the insulating wire core cavity enclosed by the tape layer or the armor layer is filled with a filling layer formed by PET fiber rope; a sheath layer made of TPU material is provided on the outside of the tape layer or the armor layer, and a braided reinforcement layer woven from PET fibers is provided on the outside of the sheath layer.

2. The extreme cold resistant flexible wire and cable according to claim 1, characterized in that: The conductor is composed of soft copper wire, and the conductor is a bending-resistant dense-pitch stranded conductor.

3. The extreme cold resistant flexible wire and cable according to claim 1, characterized in that: The pitch shall not be greater than 6 times the outer diameter of the strand.

4. The extreme cold resistant flexible wire and cable according to claim 2, characterized in that: The nominal cross-section of the conductor is 0.5 to 300 mm 2 .

5. The extreme cold resistant flexible wire and cable according to claim 1, characterized in that: The thickness of the insulating layer is 0.5-1.8 mm.

6. The extreme cold resistant flexible wire and cable according to claim 1, characterized in that: The wrapping layer is made of PET fiber tape or glass fiber tape.

7. The extreme cold resistant flexible wire and cable according to claim 1, characterized in that: The sheath thickness is 0.8-3.0mm.

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