Variable frequency photoelectric composite soft cable for coal mining machine

Abstract

The application discloses a kind of variable frequency photoelectric composite soft cable for coal mining machine, including composite cable core, center framework and protection laminated, the center framework includes the support soft axle of center and the outer compression layer of outermost layer, installation cavity is equipped between the support soft axle and outer compression layer, the composite cable core includes filling layer, four insulating sheaths are equipped in the filling layer, and four the insulating sheaths are contacted with center framework, wherein three the insulating sheaths are equipped with power line core inside, and the remaining one the insulating sheath is equipped with three control line cores inside, and three the control line cores are equipped with aramid fiber reinforced core between it.The softness of cable is improved, it is more resistant to bending, and make the cable have good tensile and tension and compression performance, protect the cable core integrity, prolong the service life of product.

Description

Technical Field

[0001] This invention relates to the technical field of cables, specifically to a variable frequency optoelectronic composite flexible cable for coal mining machines. Background Technology

[0002] As we all know, my country is a country rich in coal resources, and coal is one of its most important energy sources. With the rapid development of my country's economy, the country's demand for energy is constantly increasing, accelerating the mining of coal resources. Therefore, the application of coal mining machines is also increasing. Coal mining machines operate in a humid environment year-round, with a small working area, numerous mechanical constructions, and difficult cable laying and installation, posing a risk of mechanical damage and increasing maintenance difficulty, thus creating safety hazards. Optoelectronic composite coal mining machine flexible cables can combine copper conductors for power transmission with optical fibers, simultaneously solving the equipment's power supply and signal access problems in one go.

[0003] Coal mining machine cables consist of power cores and control cores, with the control cores primarily serving a signal monitoring function. During operation, cables are subjected to frequent bending, coal impacts, various mechanical compressions, and tension, making them susceptible to damage, reducing their lifespan, and impacting construction progress. Summary of the Invention

[0004] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. The invention primarily offers a variable frequency optoelectronic composite flexible cable for coal mining machines, addressing the technical problem mentioned in the background section where cables are easily damaged during operation due to frequent bending, coal impacts, various mechanical compressions, and stretching, leading to reduced service life and hindering construction.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A variable frequency optoelectronic composite flexible cable for coal mining machines includes a composite cable core, a central skeleton, and a protective layer. The central skeleton includes a central supporting flexible shaft and an outermost outer pressure-resistant layer. An installation cavity is provided between the supporting flexible shaft and the outer pressure-resistant layer. Several evenly distributed installation strips are connected to the outer wall of the supporting flexible shaft. A semi-circular rubber strip is connected to the other side of each installation strip. A support strip is provided between each pair of semi-circular rubber strips. A cavity is provided inside each support strip, and a rubber strip slides inside the cavity. Two elastic strips are provided on one side of each rubber strip. Two connecting strips are connected to one side of the supporting flexible shaft, and an arc strip is connected to the other side of the two connecting strips. Hollow rubber hoses are provided on both sides of each supporting strip. The hollow rubber hoses are in contact with the supporting strip, the outer pressure-resistant layer and the semi-circular rubber strip respectively. The composite cable core includes a filling layer. The filling layer has four insulating sheaths inside, and all four insulating sheaths are in contact with the central skeleton. Three of the insulating sheaths have power wire cores inside, and the remaining insulating sheath has three control wire cores inside. An aramid fiber reinforcing core is provided between the three control wire cores.

[0006] Preferably, the central skeleton is located at the center of the composite cable core, and the composite cable core is located inside the protective layer.

[0007] Preferably, the outer compressive layer is a nylon layer.

[0008] Preferably, the support strip is installed on the inner wall of the outer pressure-resistant layer, and both connecting strips are slidably connected to the support strip.

[0009] Preferably, each of the hollow rubber hoses is connected to an adjacent support strip by a limiting strip.

[0010] Preferably, each of the insulating sheaths is covered with a non-woven fabric wrapping layer, and each of the control wire cores is covered with a wire core insulation layer.

[0011] Preferably, the protective layer includes an outermost wear-resistant and corrosion-resistant layer, an inner high-temperature waterproof layer, an inner reinforcing layer, and a built-in compressive and tensile-resistant layer.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The central skeleton is adopted. By supporting the flexible shaft and the outer pressure-resistant layer, the tensile performance of the cable can be increased. When the cable is bent under stress in the working state, the semi-circular rubber strip squeezes the hollow rubber hose, so that the semi-circular rubber strip can move outward, giving the inner cable core a space to slide, avoiding damage to the cable when bending, making the cable more resistant to bending. At the same time, the compression of the hollow rubber hose and the semi-circular rubber strip can absorb some of the external pressure and increase the cable's pressure resistance. If the pressure is large, the supporting flexible shaft and the arc strip contact, so that the rubber strip and the elastic strip are squeezed. The force generated by the deformation of the elastic strip cancels out the external pressure, reducing the stress on the cable core conductor, protecting the integrity of the cable core, extending the service life of the product, and achieving good pressure resistance of the cable. (2) Aramid fiber reinforcing core is used to strengthen the power core and control core, improve the tensile strength of the cable, and also improve the flexibility of the cable, making it more resistant to bending; (3) The wear-resistant and corrosion-resistant layer increases the wear-resistant and corrosion-resistant properties of this cable, the high-temperature and waterproof layer increases the high-temperature and waterproof properties of this cable, the compressive and tensile layer increases the tensile properties of this cable, and the reinforcing layer increases the structural strength of the cable, making the cable more practical.

[0013] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the cross-section of the composite cable core of the present invention; Figure 3 This is a schematic diagram of the central skeleton cross-section of the present invention; Figure 4 This is an enlarged view of point A in the present invention.

[0015] Figure Descriptions: 1. Composite cable core; 101. Filler layer; 102. Core insulation layer; 103. Insulating sheath; 104. Non-woven fabric wrapping layer; 105. Power core; 106. Control core; 107. Aramid fiber reinforcing core; 2. Central skeleton; 201. Supporting flexible shaft; 202. Outer compression-resistant layer; 203. Mounting cavity; 204. Mounting strip; 205. Semi-circular rubber strip; 206. Support strip; 207. Cavity; 208. Rubber strip; 209. Connecting strip; 210. Arc strip; 211. Hollow rubber hose; 212. Limiting strip; 213. Elastic strip; 3. Protective layer; 301. Wear-resistant and corrosion-resistant layer; 302. High-temperature resistant and waterproof layer; 303. Reinforcing layer; 304. Compression and tensile resistant layer. Detailed Implementation

[0016] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] Please refer to the appendix carefully. Figure 1 and 2 This invention provides a technical solution: a variable frequency optoelectronic composite flexible cable for coal mining machines, comprising a composite cable core 1, a central skeleton 2, and a protective layer 3. The central skeleton 2 is located at the center of the composite cable core 1, and the composite cable core 1 is located inside the protective layer 3. The composite cable core 1 includes a filling layer 101, and four insulating sheaths 103 are provided inside the filling layer 101. All four insulating sheaths 103 are in contact with the central skeleton 2. Three of the insulating sheaths 103 are provided with power wire cores 105, and the remaining insulating sheath 103 is provided with three control wire cores 106. An aramid fiber reinforcing core 107 is provided between the three control wire cores 106. Each insulating sheath 103 is covered with a non-woven fabric wrapping layer 104, and each control wire core 106 is covered with a wire core insulation layer 102. The aramid fiber reinforcing core 107 is used to strengthen the power core 105 and the control core 106, thereby improving the tensile strength of the cable and also increasing its flexibility, making it more resistant to bending.

[0020] Please refer to the appendix carefully. Figure 1-4The central frame 2 includes a central supporting flexible shaft 201 and an outermost outer pressure-resistant layer 202. The outer pressure-resistant layer 202 is a nylon layer. An installation cavity 203 is provided between the supporting flexible shaft 201 and the outer pressure-resistant layer 202. Several evenly distributed installation strips 204 are connected to the outer wall of the supporting flexible shaft 201. A semi-circular rubber strip 205 is connected to the other side of each installation strip 204. A support strip 206 is provided between each pair of semi-circular rubber strips 205. The support strip 206 is installed on the inner wall of the outer pressure-resistant layer 202. A cavity 207 is provided inside the support strip 206, and a rubber slidable inside the cavity 207. A rubber strip 208 has two elastic strips 213 on one side. Two connecting strips 209 are connected to the side of the rubber strip 208 facing the supporting flexible shaft 201. An arc strip 210 is connected to the other side of both connecting strips 209. Both connecting strips 209 are slidably connected to the supporting strip 206. Each supporting strip 206 has hollow rubber hoses 211 on both sides. The hollow rubber hoses 211 contact the supporting strip 206, the outer pressure-resistant layer 202, and the semi-circular rubber strip 205, respectively. Each hollow rubber hose 211 is connected to an adjacent supporting strip 206 by a limiting strip 212. The limiting strip 212 prevents the hollow rubber hose 211 from rotating on its own, ensuring the effective use of the hollow rubber hose 211. In practical use, the tensile strength of the cable is ensured by the supporting flexible shaft 201 and the outer pressure-resistant layer 202. When the cable is bent under stress during operation, the semi-circular rubber strip 205 squeezes the hollow rubber hose 211, causing the hollow rubber hose 211 to shrink and deform, allowing the semi-circular rubber strip 205 to move outward, providing space for the internal cable core to slide, preventing damage to the cable during bending, and making the cable more resistant to bending. At the same time, the compression of the hollow rubber hose 211 and the semi-circular rubber strip 205 can absorb some external pressure, increasing the cable's pressure resistance. If the pressure is large, the supporting flexible shaft 201 and the arc strip 210 come into contact, and the arc strip 210 pushes the connecting strip 209 to move, causing the rubber strip 208 to move and squeeze against the elastic strip 213. The force generated by the deformation of the elastic strip 213 cancels out the external pressure, reducing the stress on the cable core conductor, protecting the integrity of the cable core, extending the service life of the product, and achieving good pressure resistance of the cable.

[0021] Please refer to the appendix carefully. Figure 1 The protective layer 3 includes an outermost wear-resistant and corrosion-resistant layer 301, which increases the wear resistance and corrosion resistance of the cable. Inside the wear-resistant and corrosion-resistant layer 301 is a high-temperature resistant and waterproof layer 302, which increases the high-temperature resistance and waterproof performance of the cable. Inside the high-temperature resistant and waterproof layer 302 is a reinforcing layer 303, which increases the structural strength of the cable. Inside the reinforcing layer 303 is a compressive and tensile resistant layer 304, which increases the tensile strength of the cable.

[0022] The specific operation process of this invention is as follows: In practical use, when the cable is bent under stress during operation, the semi-circular rubber strip 205 compresses the hollow rubber hose 211, causing the hollow rubber hose 211 to contract and deform. This allows the semi-circular rubber strip 205 to move outward, providing space for the internal cable core to slide, preventing damage to the cable during bending and making the cable more resistant to bending. At the same time, the compression of the hollow rubber hose 211 and the semi-circular rubber strip 205 can absorb some external pressure, increasing the cable's compressive strength. If the pressure is high, the supporting flexible shaft 201 contacts the arc strip 210, and the arc strip 210 pushes the connecting strip 209 to move, causing the rubber strip 208 to move and compress against the elastic strip 213. The force generated by the deformation of the elastic strip 213 cancels out the external pressure, reducing the stress on the cable core conductor, protecting the integrity of the cable core, extending the product's service life, and achieving good compressive strength for the cable.

[0023] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A variable frequency optoelectronic composite flexible cable for coal mining machines, comprising a composite cable core (1), a central skeleton (2), and a protective layer (3), characterized in that: The central frame (2) includes a central support flexible shaft (201) and an outermost outer pressure-resistant layer (202). An installation cavity (203) is provided between the support flexible shaft (201) and the outer pressure-resistant layer (202). Several evenly distributed installation strips (204) are connected to the outer wall of the support flexible shaft (201). A semi-circular rubber strip (205) is connected to the other side of each installation strip (204). A support strip (206) is provided between each pair of semi-circular rubber strips (205). A cavity (207) is provided inside each support strip (206). A rubber strip (208) slides inside the cavity (207). Two elastic strips (213) are provided on one side of the rubber strip (208). Two connecting strips (209) are connected to the side of the rubber strip (208) facing the support flexible shaft (201). An arc strip (210) is connected to the other side of the two connecting strips (209). Hollow rubber hoses (211) are provided on both sides of each support strip (206). The hollow rubber hoses (211) are in contact with the support strip (206), the outer pressure-resistant layer (202), and the semi-circular rubber strip (205), respectively. The composite cable core (1) includes a filling layer (101), and the filling layer (101) has four insulating sheaths (103) inside, and all four insulating sheaths (103) are in contact with the central skeleton (2). Among them, three of the insulating sheaths (103) have power wire cores (105) inside, and the remaining insulating sheath (103) has three control wire cores (106) inside, and an aramid fiber reinforcing core (107) is provided between the three control wire cores (106). The support strip (206) is installed on the inner wall of the outer pressure-resistant layer (202), and both connecting strips (209) are slidably connected to the support strip (206); Each of the hollow rubber hoses (211) is connected to an adjacent support bar (206) by a limiting clip (212).

2. The variable frequency optoelectronic composite flexible cable for coal mining machines according to claim 1, characterized in that: The central skeleton (2) is located at the center of the composite cable core (1), and the composite cable core (1) is located inside the protective layer (3).

3. The variable frequency optoelectronic composite flexible cable for coal mining machines according to claim 1, characterized in that: The outer compressive layer (202) is a nylon layer.

4. The variable frequency optoelectronic composite flexible cable for coal mining machines according to claim 1, characterized in that: Each of the insulating sheaths (103) is covered with a non-woven fabric wrapping layer (104), and each of the control wire cores (106) is covered with a wire core insulation layer (102).

5. The variable frequency optoelectronic composite flexible cable for coal mining machines according to claim 1, characterized in that: The protective layer (3) includes an outermost wear-resistant and corrosion-resistant layer (301), a high-temperature waterproof layer (302) is provided inside the wear-resistant and corrosion-resistant layer (301), a reinforcing layer (303) is provided inside the high-temperature waterproof layer (302), and a compressive and tensile-resistant layer (304) is built into the reinforcing layer (303).

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