Cable with good wear resistance and connecting assembly thereof

Abstract

The invention provides a cable with good wear resistance and a connecting assembly thereof, and relates to the technical field of cables, the cable with good wear resistance comprises a cable main body and an outer sheath, the cable main body is arranged at the inner side of the outer sheath, and the outer side of the outer sheath is coated with a wear-resistant layer; the cable body comprises a lining layer, three copper conductive cores are arranged on the inner side of the lining layer, the outer sides of the copper conductive cores are fixedly sleeved with an inner sheath, a gap between the inner side of the lining layer and the inner sheath is filled with a filling layer, the outer side of the lining layer is fixedly sleeved with a honeycomb sleeve, and a plurality of honeycomb holes are evenly formed in the peripheral wall of the honeycomb sleeve in a penetrating mode. The wear-resistant layer wrapping the outer side of the outer sheath of the cable is made of a nano ceramic particle enhanced fluororubber material which has excellent scratch resistance and wear resistance and can effectively resist friction between the cable and the ground, a pipeline and a wall in the laying process and external mechanical scratch in long-term use; and the risk of exposure of the internal cable main body caused by damage of the outer sheath is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of cables, and more particularly to a cable with good wear resistance and its connecting components. Background Technology

[0002] In practical applications of cables, such as industrial cabling, building construction, and outdoor installation, cables often face complex and harsh environmental impacts. Traditional cables often use ordinary plastic or rubber materials for their outer protective structure, which have poor wear resistance. During the installation process, friction between the cable and objects such as the ground, pipes, and walls, as well as external mechanical scratches during long-term use, can easily lead to damage to the outer sheath, exposing the internal copper conductor and causing safety hazards such as short circuits and leakage, significantly shortening the cable's service life. Furthermore, the protective layers of traditional cables (such as steel strips and aluminum strips) are mostly solid structures, requiring a large amount of material, resulting in a heavy overall weight of the cable and increasing the difficulty of transportation and installation.

[0003] In cable connection, especially for the common connection of two three-core cables, existing technologies have significant shortcomings. Currently, when connecting two three-core cables, terminal blocks or traditional junction boxes are usually used as connectors. These connectors require a large number of screws during the fixing process. Each copper conductor usually requires one screw for fixing, so two cables require at least six screws. Not only do the fixing screws for each copper conductor need to be tightened one by one, but multiple sets of screws are also needed to fix the outer shell and cover of the connector. The operation steps are cumbersome, time-consuming, and labor-intensive, which seriously affects the construction efficiency. In addition, traditional connectors have poor sealing performance, and moisture, dust and impurities can easily enter the cable connection, causing the copper conductors to oxidize and affecting the stability of the circuit. Therefore, it is necessary to provide a cable with good wear resistance and its connecting components to solve the above technical problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a cable with good wear resistance and its connecting components.

[0005] This invention provides a cable with good wear resistance, comprising a cable body and an outer sheath. The cable body is disposed inside the outer sheath, and the outer sheath is covered with a wear-resistant layer. The cable body includes an inner liner, on the inner side of which three copper conductors are disposed. The outer side of the copper conductors is fixedly fitted with the inner sheath. The gap between the inner side of the inner liner and the inner sheath is filled with a filler layer. The outer side of the inner liner is fixedly fitted with a honeycomb sleeve, and a plurality of honeycomb holes are uniformly perforated on the outer peripheral wall of the honeycomb sleeve. The outer sheath is fixedly fitted on the outer side of the honeycomb sleeve.

[0006] Preferably, the copper conductor core is made of high-purity oxygen-free copper, the inner sheath is made of cross-linked polyethylene, the filling layer is made of high-elasticity flame-retardant polyurethane foam strip, the inner lining layer is made of chlorinated polyethylene, the honeycomb sleeve is made of glass fiber reinforced modified polypropylene composite material, the outer sheath is made of high-density polyethylene, and the wear-resistant layer is made of nano-ceramic particle reinforced fluororubber.

[0007] This invention also provides a cable connection assembly with good wear resistance, including a housing, a cable connection unit installed on the inner bottom of the housing, and two sealing units symmetrically installed on both sides of the housing; the cable connection unit includes a connecting component and a locking component; the connecting component includes an insulating sleeve, three insulating sleeves are fixedly connected at equal intervals on the inner bottom of the housing, and a conductive seat is fixedly connected to the inner side of the insulating sleeve; the top of the conductive seat has two symmetrically formed receiving grooves, each receiving groove is provided with a conductive block, and the top of the conductive block has a horizontally formed second semi-circular groove. The conductive base has two symmetrical horizontal through holes on both sides, and the two horizontal through holes correspond one-to-one with two receiving grooves. A vertically arranged first semi-circular groove is opened on one side of the receiving groove. Two insulating horizontal rods are symmetrically and rotatably connected to the three insulating shell sleeves. The two insulating horizontal rods correspond to the conductive blocks on both sides respectively. One end of each of the three conductive blocks on the same side is fixedly sleeved on the outside of the corresponding insulating horizontal rod. A rotating plate is fixedly sleeved on each of the two insulating horizontal rods. The two rotating plates are symmetrically arranged. The bottom end of the rotating plate has a notch for avoiding the conductive base.

[0008] Preferably, the locking components correspond one-to-one with the rotating plates. Each locking component includes an upper pressure block, which is fixedly connected to the outer wall of the rotating plate. A lower pressure block, corresponding to the upper pressure block, is fixedly connected to the bottom inner side of the housing. An arc-shaped pressure groove is provided at the bottom of the rotating plate and the top of the lower pressure block. An arc-shaped anti-slip groove is provided in the arc-shaped pressure groove. A first locking screw is provided at the top of the rotating plate. A fixing block, corresponding to the first locking screw, is fixedly connected to the inner wall of the housing. The fixing block has a threaded hole for threaded connection with the first locking screw. One end of the first locking screw passes through the rotating plate and is threadedly connected to the threaded hole on the fixing block.

[0009] Preferably, two sealing units are symmetrically arranged on both sides of the housing. Each sealing unit includes an end sealing component and a pressing component. The end sealing component includes an outer sleeve, which is fixedly connected to the outer wall of the housing. A rotating sleeve is provided on the inner side of the outer sleeve, and a rubber sealing sleeve is provided on the inner side of the rotating sleeve. A beveled portion is provided on the outer peripheral wall of the rubber sealing sleeve, and the inner peripheral wall of the rotating sleeve is adapted to fit the beveled portion. The diameter of the rubber sealing sleeve gradually decreases from the end near the housing to the end away from the housing. A transverse through hole for the cable to pass through is provided on the rotating sleeve, the rubber sealing sleeve, and the housing.

[0010] Preferably, a plurality of sliding strips arranged in a circular array are fixedly connected to the outer peripheral wall of the rotating sleeve, and a plurality of sliding grooves corresponding to and adapted to the sliding strips are provided on the inner peripheral wall of the outer sleeve, and the sliding strips are slidably disposed in the corresponding sliding grooves.

[0011] Preferably, the clamping component includes a rotating ring, which is rotatably sleeved on the outside of the rotating sleeve. A connecting rod is fixedly connected to the outer wall of the rotating ring. An oblique guide groove is longitudinally opened through the upper part of the outer sleeve. The distance from one end of the oblique guide groove to the housing is greater than the distance from the other end to the housing. The top end of the connecting rod extends out of the oblique guide groove and is rotatably connected to a rotating wheel. The rotating wheel is positioned above the housing. An arc-shaped baffle is fixedly sleeved on the outside of the connecting rod. The lower surface of the arc-shaped baffle is in contact with the outer surface of the outer sleeve, and the curvature of the arc-shaped baffle matches the curvature of the outer circumference of the outer sleeve. The arc-shaped baffle is correspondingly arranged with the oblique guide groove, and the size of the arc-shaped baffle is larger than the size of the oblique guide groove, which can completely block the oblique guide groove.

[0012] Preferably, the transverse through hole, the first semicircular groove, and the second semicircular groove are all adapted to the copper conductor.

[0013] Preferably, the top and front sides of the housing are open, and an L-shaped cover plate is provided on the housing corresponding to the opening. The bottom two sides of the L-shaped cover plate are rotatably connected to the bottom two sides of the housing by pins. A sealing gasket is embedded in the edge of the opening of the housing to improve the sealing performance between the housing and the L-shaped cover plate. The sealing gasket is made of rubber.

[0014] Preferably, the top of the L-shaped cover plate is provided with a second locking bolt, and the top of the housing is provided with a threaded hole for threaded connection with the second locking bolt. One end of the second locking bolt passes through the L-shaped cover plate and is threadedly connected to the threaded hole on the top of the housing.

[0015] Compared with related technologies, the cable and its connecting components with good wear resistance provided by the present invention have the following beneficial effects: In this invention, the wear-resistant layer covering the outer side of the cable sheath is made of nano-ceramic particle-reinforced fluororubber material. This material has excellent scratch and wear resistance properties, which can effectively resist the friction between the cable and the ground, pipes, and walls during the laying process, as well as the external mechanical scratches during long-term use. This reduces the risk of the inner cable body being exposed due to damage to the outer sheath, thereby reducing safety hazards such as short circuits and leakage, and significantly extending the overall service life of the cable. At the same time, the outer sheath is made of high-density polyethylene material, which can serve as secondary protection for the wear-resistant layer, further enhancing the cable's resistance to the external environment.

[0016] The honeycomb sleeve fixedly fitted on the outer side of the inner lining layer of the cable body is made of glass fiber reinforced modified polypropylene composite material. It has both the rigidity of glass fiber and the toughness of polypropylene. Furthermore, several honeycomb holes are uniformly opened through its outer peripheral wall. While ensuring impact resistance and extrusion resistance, it significantly reduces the amount of material used, solving the problem of large material usage and heavy weight of traditional solid protective layers for cables.

[0017] The three copper conductors inside the cable body are all made of high-purity oxygen-free copper, which has excellent conductivity and ensures stable current or signal transmission. The inner sheath fixedly sleeved on the outside of each copper conductor is made of cross-linked polyethylene material, which can effectively prevent short circuits between adjacent copper conductors and achieve good insulation. The filling layer between the inner side of the inner lining and the inner sheath is made of high-elasticity flame-retardant polyurethane foam strip, which can fill the gaps and make the internal structure of the cable more compact. Its high elasticity can also absorb external impacts and vibrations, reducing the impact on the copper conductors.

[0018] The cable connection unit in the connection assembly achieves quick connection through the cooperation of the connecting component and the locking component. During connection, simply pass the copper conductors of the two cables through the corresponding horizontal through holes and insert them into the second semi-circular groove of the conductive block. Rotating the rotating plate will cause the conductive block to bend the copper conductors and fit them into the first semi-circular groove of the conductive base. Then, the upper and lower pressure blocks in the locking component, together with the arc-shaped pressure groove and the arc-shaped anti-slip groove, clamp the cable. Finally, the first locking screw and the fixing block fix the rotating plate, which not only fixes the copper conductors, but also presses and fixes the cable, preventing the risk of the cable joint being pulled off or loosened due to external pulling of the cable. In this process, it is not necessary to fix each copper conductor with a screw one by one, reducing the use of screws and making the operation more convenient.

[0019] The sealing units on both sides of the connecting component housing achieve efficient sealing through end sealing components and clamping components. In the end sealing component, the rotating sleeve inside the outer sleeve slides through a sliding strip and a sliding groove. The rubber sealing sleeve inside the rotating sleeve has an inclined surface. In the clamping component, the rotating ring cooperates with the inclined guide groove through a connecting rod and a rotating wheel. When the L-shaped cover is closed, the L-shaped cover squeezes the rotating wheel, causing the connecting rod to slide along the inclined guide groove, making the rotating sleeve move towards the housing and squeeze the rubber sealing sleeve, so that the rubber sealing sleeve tightly fits the cable, the rotating sleeve, and the housing. At the same time, the arc-shaped baffle can block the inclined guide groove. The sealing gasket at the edge of the housing opening, together with the L-shaped cover and the second locking bolt, further enhances the overall sealing performance, prevents moisture, dust, and impurities from entering, prevents the risk of copper conductor oxidation, and ensures stable circuit transmission.

[0020] In the connecting assembly, the upper pressure block of the locking component is fixed to the outer wall of the rotating plate, and the lower pressure block is fixed to the bottom of the inner side of the housing. The arc-shaped pressure grooves of both are adapted to the outer wall of the cable. The arc-shaped anti-slip grooves in the arc-shaped pressure grooves can increase the friction with the cable and enhance the clamping stability of the cable. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of the abrasion-resistant cable provided by the present invention; Figure 2 This is a schematic diagram of the overall structure of the two cables after they are installed on the cable connection assembly in this invention; Figure 3 This is a cross-sectional view of the cable installed at the connection assembly in this invention; Figure 4 This is a schematic diagram of the L-shaped cover plate in this invention when it is open; Figure 5 This is a schematic diagram of a rotating plate in a vertical state in this invention; Figure 6 This is a schematic diagram of the structure of the connecting component in this invention; Figure 7 This is an enlarged view of point A in this invention; Figure 8 This is a schematic diagram of the structure of the rotating sleeve in this invention; Figure 9 This is a schematic diagram of the cable connection assembly in this invention; Figure 10 This is a schematic diagram of the structure of the clamping component in this invention; Figure 11 This is a schematic diagram of the structure of the rubber sealing sleeve in this invention.

[0022] Numbering in the diagram: 1. Cable body; 101. Inner sheath; 102. Copper conductor; 103. Filler layer; 104. Inner lining layer; 105. Honeycomb sleeve; 1051. Honeycomb hole; 2. Outer sheath; 3. Wear-resistant layer; 4. Shell; 5. L-shaped cover plate; 6. Cable connection unit; 61. Connecting component; 611. Insulating shell; 612. Rotating plate; 613. Conductive seat; 6131. ​​Horizontal through hole; 6132. First semi-circular groove; 614. Insulating crossbar; 615. Conductive block; 6151. Second semi-circular groove; 616. Receiving groove; 62. Lock 621. Upper pressure block; 622. First locking screw; 623. Fixing block; 624. Lower pressure block; 625. Arc-shaped pressure groove; 626. Arc-shaped anti-slip groove; 7. Sealing unit; 71. End sealing component; 711. Outer sleeve; 712. Rotating sleeve; 713. Slide groove; 714. Slide bar; 715. Rubber sealing sleeve; 7151. Beveled part; 72. Pressing component; 721. Rotating ring; 722. Connecting rod; 723. Rotating wheel; 724. Arc-shaped baffle; 725. Beveled guide groove; 8. Second locking bolt; 9. Sealing gasket. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0024] Please refer to the following: Figure 1 A cable with good wear resistance includes a cable body 1 and an outer sheath 2. The cable body 1 is disposed inside the outer sheath 2, and the outer sheath 2 is covered with a wear-resistant layer 3. The cable body 1 includes an inner liner 104, with three copper conductors 102 disposed on the inner side of the inner liner 104. An inner sheath 101 is fixedly sleeved on the outer side of the copper conductors 102. A filling layer 103 is filled in the gap between the inner side of the inner liner 104 and the inner sheath 101. A honeycomb sleeve 105 is fixedly sleeved on the outer side of the inner liner 104. Several honeycomb holes 1051 are evenly opened through the outer peripheral wall of the honeycomb sleeve 105. The honeycomb holes 1051 are hexagonal through holes. The outer sheath 2 is fixedly sleeved on the outer side of the honeycomb sleeve 105.

[0025] In the above, the three copper conductors 102 of the cable body 1 undertake the task of current transmission. The inner sheath 101 provides independent insulation protection for each copper conductor 102, preventing short circuit faults caused by contact between adjacent copper conductors 102. The filling layer 103 fills the gap between the inner lining layer 104 and the inner sheath 101, which not only makes the internal structure of the cable more regular and prevents the copper conductors 102 from shifting when the cable is bent or moved, but its high elasticity can also buffer external impacts and vibrations, reducing damage to the copper conductors 102. The inner lining layer 104 wraps the internal components, playing an overall insulation and preliminary protection role. The honeycomb sleeve 105, through the design of the honeycomb holes 1051, ensures mechanical strength to resist external compression and impact while significantly reducing the amount of material used, reducing the overall weight of the cable, and making transportation and laying more convenient. The outer sheath 2, as the outer protective layer, can block external moisture, dust and other substances from corroding the internal structure. The wear-resistant layer 3 is in direct contact with the outside world and can resist friction and scratches, preventing the outer sheath 2 from breaking prematurely and extending the service life of the cable.

[0026] Furthermore, the copper conductor 102 is made of high-purity oxygen-free copper, the inner sheath 101 is made of cross-linked polyethylene, the filling layer 103 is made of high-elasticity flame-retardant polyurethane foam strip, the inner lining layer 104 is made of chlorinated polyethylene, the honeycomb sheath 105 is made of glass fiber reinforced modified polypropylene composite material, the outer sheath 2 is made of high-density polyethylene, and the wear-resistant layer 3 is made of nano-ceramic particle reinforced fluororubber. The honeycomb holes 1051 of the honeycomb sheath 105 are a through-hole design and are evenly distributed. Under the premise of ensuring mechanical strength (impact resistance and compression resistance), the amount of material used in the honeycomb sheath 105 is further reduced, thus further reducing the weight. In contrast, the metal protective layer of existing conventional cables (such as steel strip / aluminum strip) is mostly a solid structure without hollow design, which is heavy and requires far more material than the honeycomb sheath 105 for the same protective effect.

[0027] In the above, the high-purity oxygen-free copper conductor core 102 ensures excellent conductivity and reduces current transmission loss; the cross-linked polyethylene inner sheath 101 has stable insulation performance and is temperature and aging resistant; the high-elasticity flame-retardant polyurethane foam strip filling layer 103 has good elastic buffering performance; the chlorinated polyethylene inner lining layer 104 has strong weather resistance and chemical corrosion resistance; the glass fiber reinforced modified polypropylene composite honeycomb sheath 105 has high strength and light weight, balancing the protection performance and lightweight requirements; the high-density polyethylene outer sheath 2 has good toughness and impact resistance; and the nano-ceramic particle reinforced fluororubber wear-resistant layer 3 can greatly improve the wear resistance of the cable surface. Example

[0028] Please refer to the following: Figures 1 to 9A cable connection assembly with good wear resistance includes a housing 4. A cable connection unit 6 is installed on the inner bottom of the housing 4, and two sealing units 7 are symmetrically installed on both sides of the housing 4. The cable connection unit 6 includes a connecting component 61 and a locking component 62. The connecting component 61 includes an insulating sleeve 611. Three insulating sleeves 611 are fixedly connected at equal intervals on the inner bottom of the housing 4. A conductive seat 613 is fixedly connected to the inner side of the insulating sleeve 611. Two receiving grooves 616 are symmetrically opened on the top of the conductive seat 613. A conductive block 615 is provided in each receiving groove 616. A second semi-circular groove 6151 is opened on the top of the conductive block 615. Two transverse through holes 6131 are symmetrically opened on both sides of the conductive seat 613. The horizontal through hole 6131 corresponds one-to-one with the two receiving grooves 616. A first semi-circular groove 6132 is vertically arranged on one side of the receiving groove 616. The second semi-circular groove 6151 is coaxially arranged with the horizontal through hole 6131. ​​Two insulating horizontal rods 614 are symmetrically rotatably connected through the three insulating shells 611. The two insulating horizontal rods 614 correspond to the conductive blocks 615 on both sides respectively. One end of the three conductive blocks 615 on the same side is fixedly sleeved on the outside of the corresponding insulating horizontal rod 614. A rotating plate 612 is fixedly sleeved on both insulating horizontal rods 614. The conductive blocks 615 and the corresponding rotating plates 612 are vertically arranged. The two rotating plates 612 are symmetrically arranged. A notch is opened at the bottom of the rotating plate 612 to avoid the conductive seat 613.

[0029] In the above description, the housing 4 provides the installation base and external protection for the entire connection assembly. The internal cable connection unit 6 is used for the conductive connection of the two cables, while the sealing units 7 on both sides are used to seal the gap between the cable and the housing 4, preventing impurities from entering. The three insulating sleeves 611 in the connection component 61 correspond to the three copper conductors 102 of the cable, achieving independent insulation separation of the connection points of each copper conductor 102, avoiding leakage and short circuits between different copper conductors 102. The conductive seat 613 acts as a conductive intermediary, providing conductive connection points for the copper conductors 102 on both sides. The receiving groove 616 provides installation and movement space for the conductive block 615, which fits against the copper conductor 102 through the second semi-circular groove 6151. 2. During rotation, the copper conductor 102 can be bent and pressed tightly onto the first semi-circular groove 6132 of the conductive seat 613, ensuring that the copper conductor 102 and the conductive seat 613 are in close contact, thus ensuring conductivity stability. The horizontal through hole 6131 provides a passage for the copper conductor 102 to pass through, ensuring that the copper conductor 102 can accurately extend into the receiving groove 616 and cooperate with the conductive block 615. The two insulating horizontal bars 614 are respectively connected to the three conductive blocks 615 on both sides, realizing the synchronous operation of the three copper conductors 102 on the same side. The rotating plate 612 serves as an operating component, making it convenient for the operator to rotate it to drive the insulating horizontal bars 614 and the conductive blocks 615 to move. The notch at its bottom end can prevent interference with the conductive seat 613 during rotation, ensuring smooth rotation.

[0030] Furthermore, the locking component 62 corresponds one-to-one with the rotating plate 612. The locking component 62 includes an upper pressure block 621, which is fixedly connected to the outer wall of the rotating plate 612. The lower pressure block 624, which corresponds one-to-one with the upper pressure block 621, is fixedly connected to the bottom inner side of the housing 4. The bottom of the rotating plate 612 and the top of the lower pressure block 624 are both provided with arc-shaped pressure grooves 625. Arc-shaped anti-slip grooves 626 are provided in the arc-shaped pressure grooves 625. The top of the rotating plate 612 is provided with a first locking screw 622. The inner side wall of the housing 4 is fixedly connected with a fixing block 623, which corresponds one-to-one with the first locking screw 622. The fixing block 623 is provided with a threaded hole for threaded connection with the first locking screw 622. One end of the first locking screw 622 passes through the rotating plate 612 and is threadedly connected to the threaded hole on the fixing block 623.

[0031] In the above, the locking component 62 corresponds one-to-one with the rotating plate 612. After the rotating plate 612 drives the conductive block 615 to fix the copper conductor 102, the position of the rotating plate 612 is locked to prevent it from loosening and causing poor contact of the copper conductor 102. The upper pressure block 621 and the lower pressure block 624 cooperate to clamp and fix the cable by fitting the outer wall of the cable through the arc-shaped pressure groove 625. This prevents the copper conductor 102 from falling off at the connection point due to external pulling. The arc-shaped anti-slip groove 626 can increase the friction with the outer wall of the cable, further improving the clamping stability and preventing the cable from sliding inside the housing 4. The threaded connection between the first locking screw 622 and the fixing block 623 can firmly fix the rotating plate 612 in the designated position, which not only locks the pressing state of the conductive block 615 on the copper conductor 102, but also fixes the clamping state of the upper pressure block 621 on the cable.

[0032] Furthermore, the horizontal through hole 6131, the first semicircular groove 6132, and the second semicircular groove 6151 are all adapted to the copper conductor 102.

[0033] In the above, the horizontal through hole 6131, the first semicircular groove 6132 and the second semicircular groove 6151 are adapted to the copper conductor 102 to ensure the conductivity of the copper conductor 102.

[0034] Furthermore, the conductive base 613 and the conductive block 615 can be made of high-purity copper alloy, and the insulating shell 611 and the insulating crossbar 614 can be made of glass fiber reinforced modified epoxy resin, which has good insulation performance and strength.

[0035] In the above, the conductive base 613 and conductive block 615 made of high-purity copper alloy can ensure excellent conductivity. The insulating shell 611 and insulating crossbar 614 made of glass fiber reinforced modified epoxy resin not only have reliable insulation performance and can effectively isolate current interference between different copper conductor cores 102, but also have high mechanical strength and are not easily damaged. Example

[0036] For further details, please refer to [link / reference]. Figures 1 to 11 Based on Embodiment 2, two sealing units 7 are symmetrically arranged on both sides of the housing 4. Each sealing unit 7 includes an end sealing component 71 and a pressing component 72. The end sealing component 71 includes an outer sleeve 711, which is fixedly connected to the outer wall of the housing 4. A rotating sleeve 712 is provided inside the outer sleeve 711, and a rubber sealing sleeve 715 is provided inside the rotating sleeve 712. An inclined portion 7151 is provided on the outer peripheral wall of the rubber sealing sleeve 715. The inner peripheral wall of the rotating sleeve 712 and the inclined portion 7151 are connected. The rubber sealing sleeve 715 is fitted and adapted to the housing 4. The diameter of the end of the rubber sealing sleeve 715 near the housing 4 gradually decreases from the end away from the housing 4. The rotating sleeve 712, the rubber sealing sleeve 715 and the housing 4 are all transversely perforated for the cable to pass through. Several sliding strips 714 arranged in a circular array are fixedly connected to the outer peripheral wall of the rotating sleeve 712. Several sliding grooves 713 are provided on the inner peripheral wall of the outer sleeve 711, which correspond to and are adapted to the sliding strips 714. The sliding strips 714 are slidably disposed in the corresponding sliding grooves 713.

[0037] In the above description, the two end sealing components 71 of the sealing unit 7 correspond to the insertion ends of the two cables, respectively. Through the cooperation of the outer sleeve 711, the rotating sleeve 712, and the rubber sealing sleeve 715, the gap between the cable and the housing 4 is sealed. The outer sleeve 711 is fixed to the outside of the housing 4, providing installation support for the rotating sleeve 712 and the rubber sealing sleeve 715. The rotating sleeve 712 slides along the outer sleeve 711, and its inner side is in contact with the inclined surface 7151 of the rubber sealing sleeve 715. When sliding, it can squeeze the rubber sealing sleeve 715. The rubber sealing sleeve 715 is squeezed due to the inclined surface. The design of 7151 causes it to contract inward under the pressure of the rotating sleeve 712, tightly wrapping the outer wall of the cable and fitting against the outer wall of the housing 4 to achieve a seal. The perforations on the rotating sleeve 712, the rubber sealing sleeve 715, and the housing 4 ensure that the cable can be smoothly inserted into the housing 4, and the perforations are adapted to the cable to reduce the initial gap. The cooperation between the slide bar 714 and the slide groove 713 restricts the movement direction of the rotating sleeve 712, so that it can only slide axially, avoiding uneven pressure on the rubber sealing sleeve 715 caused by the rotation of the rotating sleeve 712, and ensuring a stable sealing effect.

[0038] Furthermore, the clamping component 72 includes a rotating ring 721, which is rotatably sleeved on the outside of the rotating sleeve 712. A connecting rod 722 is fixedly connected to the outer wall of the rotating ring 721. An inclined guide groove 725 is longitudinally opened through the upper part of the outer sleeve 711. The length of the inclined guide groove 725 meets the travel of the connecting rod 722. The distance from one end of the inclined guide groove 725 to the housing 4 is greater than the distance from the other end to the housing 4. The top end of the connecting rod 722 extends out of the inclined guide groove 725 and is rotatably connected to a rotating wheel 723. The rotating wheel 723 is provided with... Above the housing 4, an arc-shaped baffle 724 is fixedly sleeved on the outer side of the connecting rod 722. The lower surface of the arc-shaped baffle 724 is in contact with the outer surface of the outer sleeve 711, and the curvature of the arc-shaped baffle 724 is adapted to the outer circumferential curvature of the outer sleeve 711. A rubber gasket can be embedded in the lower surface of the arc-shaped baffle 724 to improve the sealing performance between the contact surface with the outer sleeve 711. The arc-shaped baffle 724 is correspondingly set with the inclined guide groove 725, and the size of the arc-shaped baffle 724 is larger than the size of the inclined guide groove 725, so that it can completely cover the inclined guide groove 725.

[0039] In the above process, when the connecting rod 722 slides along the inclined guide groove 725, it will drive the rotating sleeve 712 to move towards the housing 4, thereby squeezing the rubber sealing sleeve 715. The rotating wheel 723 contacts the L-shaped cover plate 5, converting the pressure of the L-shaped cover plate 5 when it is closed into the sliding power of the connecting rod 722 along the inclined guide groove 725. There is no need for additional manual operation to squeeze the rotating sleeve 712, simplifying the sealing process. The arc-shaped baffle 724 fits against the outer surface of the outer sleeve 711, and the rubber pad on its lower surface can seal the gap between the inclined guide groove 725 and the connecting rod 722. At the same time, the arc-shaped baffle 724 is larger than the inclined guide groove 725, which can completely block the inclined guide groove 725, preventing external impurities from entering the interior of the outer sleeve 711 through the inclined guide groove 725, thereby further improving the sealing performance.

[0040] Furthermore, the top and front of the housing 4 are open, and an L-shaped cover plate 5 is provided on the housing 4 corresponding to the opening. The bottom two sides of the L-shaped cover plate 5 are rotatably connected to the bottom two sides of the housing 4 by a pin. A sealing gasket 9 is embedded in the edge of the opening of the housing 4 to improve the sealing performance between the contact surface of the housing 4 and the L-shaped cover plate 5. The sealing gasket 9 is made of rubber. A second locking bolt 8 is provided on the top of the L-shaped cover plate 5. A threaded hole is provided on the top of the housing 4 for threaded connection with the second locking bolt 8. One end of the second locking bolt 8 passes through the L-shaped cover plate 5 and is threadedly connected to the threaded hole on the top of the housing 4.

[0041] As described above, the openings on the top and front of the housing 4 facilitate the installation of the copper conductor 102 of the cable onto the cable connection unit 6, avoiding obstruction of operation by the enclosed structure. The L-shaped cover 5 is rotatably connected to the housing 4 via a pin, making it easy to open and close. When closed, it can seal the opening of the housing 4, protecting the internal components from external environmental influences. The sealing gasket 9 is embedded at the edge of the opening of the housing 4 and, when it fits against the L-shaped cover 5, can seal the gap between the housing 4 and the cover, preventing moisture and dust from entering the interior of the housing 4 through the opening gap. The second locking bolt 8 engages with the threaded hole on the top of the housing 4 to fix the L-shaped cover 5 onto the housing 4, preventing the L-shaped cover 5 from loosening and causing the sealing gasket 9 to detach from its fit, ensuring a sealed environment inside the housing 4, and also enhancing the overall structural stability of the connection components, resisting the impact of external impacts on the internal connection parts.

[0042] The working principle of the wear-resistant cable and its connecting components provided by this invention is as follows: In the wear-resistant cable of the present invention, the copper conductor 102 inside the cable body 1 is made of high-purity oxygen-free copper, which has excellent conductivity and is the core carrier for current and signal transmission. Each copper conductor 102 is covered with an inner sheath 101 to prevent short circuits between adjacent copper conductors 102 and to provide basic insulation protection for the copper conductors 102. The gap between the inner side of the inner lining layer 104 and the inner sheath 101 is filled with a filling layer 103, which fills the gap, making the internal structure of the cable more compact and preventing the copper conductors 102 from shifting due to shaking during use. The filling layer 103 is made of highly elastic flame-retardant polyurethane foam strips, whose high elasticity can absorb external impacts and reduce the impact of vibration on the copper conductors 102. A honeycomb sleeve 105 is covered on the outside of the inner lining layer 104. It uses glass fiber reinforced modified polypropylene composite material, with uniformly opened through-hole honeycomb holes 1051 on its outer peripheral wall. While ensuring impact and extrusion resistance and mechanical strength, it significantly reduces the amount of material used in the honeycomb sleeve 105, thereby reducing the weight of the cable. This solves the problem of large material usage and heavy weight of traditional solid metal protective layers such as steel / aluminum strips. An outer sheath 2 made of high-density polyethylene is fixedly sleeved on the outside of the honeycomb sleeve 105 as the outer protective structure of the cable, which can resist the corrosion of the internal components by the external environment. The wear-resistant layer 3 on the outside of the outer sheath 2 is made of nano-ceramic particle reinforced fluororubber. Nano-ceramic particle reinforced fluororubber has high wear resistance, which can reduce the loss caused by friction during cable laying and use, thereby greatly improving the wear resistance of the cable and extending the service life of the cable.

[0043] When connecting two cables using a cable connection assembly, open the L-shaped cover 5, align the two cables with the two sealing units 7 respectively, pass the cables through the rotating sleeve 712 and the rubber sealing sleeve 715, and extend them into the housing 4, ensuring the cables are positioned within the arc-shaped pressure groove 625 of the lower pressure block 624. The copper conductors 102 of the two cables should correspond to the horizontal through holes 6131 on both sides of the conductive base 613. Adjust the rotating plate 612 to a vertical position, strip the cables to expose the copper conductors 102, ensuring the length of the copper conductors 102 meets installation requirements, and allow the cable to connect. The copper conductors 102 of the cable correspond one-to-one with the horizontal through holes 6131. ​​The copper conductors 102 are then passed through the corresponding horizontal through holes 6131 and extended into the second semi-circular groove 6151. After all three copper conductors 102 of the cable have passed through the horizontal through holes 6131 and extended into the second semi-circular groove 6151, the rotating plate 612 is rotated. The rotating plate 612 drives the insulating crossbar 614 to rotate, and the insulating crossbar 614 drives the conductive block 615 on one side corresponding to the copper conductor 102 of the cable to rotate. As the conductive block 615 rotates, the copper conductors 102 located in the second semi-circular groove 6151 are rotated. The conductive block 615 is bent and rotated from a horizontal to a vertical position. At this time, the copper conductor 102 located in the second semicircular groove 6151 is bent and abuts against the first semicircular groove 6132. The rotating plate 612 is adjusted from a vertical to a horizontal position. The upper pressure block 621 also presses on the cable. The upper pressure block 621 and the lower pressure block 624 work together to clamp the cable. Then, the first locking screw 622 is threaded into the threaded hole on the fixing block 623 and tightened to fix the position of the rotating plate 612. The arc-shaped anti-slip groove 626 is used to fix the cable. The setting increases the friction between the upper pressure block 621 and the lower pressure block 624 when clamping the cable, thereby improving the stability of the cable clamping. The other cable is installed and fixed according to the above operation method. After the two cables are installed, the copper conductor core 102 of the cable transmits current through the conductive seat 613 and the conductive block 615. The copper conductor core 102 of the corresponding channels of the two cables conducts current through the conductive seat 613. Furthermore, the insulation characteristics of the insulating sleeve 611 and the insulating crossbar 614 separate the copper conductor core 102 of different channels when transmitting current.

[0044] Then, the L-shaped cover plate 5 is flipped over to cover the opening of the housing 4, and the inner surface of the L-shaped cover plate 5 is pressed tightly against the sealing gasket 9, thereby greatly improving the sealing performance at the contact surface between the L-shaped cover plate 5 and the housing 4. When the operator manually closes the L-shaped cover plate 5, as the L-shaped cover plate 5 moves to contact the rotating wheel 723, the L-shaped cover plate 5 presses against the rotating wheel 723. The rotating wheel 723 drives the connecting rod 722 to slide within the inclined guide groove 725. Initially, the connecting rod 722 is located at the end of the inclined guide groove 725 that is farther from the housing 4. The connecting rod 722 slides within the inclined guide groove 725 from the end farther from the housing 4 to the end closer to the housing 4. When the connecting rod 722 moves, it drives the rotating ring 721 to rotate on the rotating sleeve 712. As the connecting rod 722 moves within the inclined guide groove 725, it drives the rotating sleeve 712 to move closer to the housing 4, and the slide bar 714 slides within the slide groove 713, allowing the rotating sleeve 712 to move smoothly towards the housing 4. The rotating sleeve 712 presses against the rubber sealing sleeve 715, thereby making the contact surface between the rubber sealing sleeve 715, the rotating sleeve 712, and the housing 4 tighter, further improving the sealing performance.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cable with good wear resistance, characterized in that, It includes a cable body (1) and an outer sheath (2), wherein the cable body (1) is disposed inside the outer sheath (2), and the outer sheath (2) is covered with a wear-resistant layer (3). The cable body (1) includes an inner liner (104), three copper conductors (102) are provided on the inner side of the inner liner (104), an inner sheath (101) is fixedly sleeved on the outer side of the copper conductors (102), a filling layer (103) is filled in the gap between the inner side of the inner liner (104) and the inner sheath (101), a honeycomb sleeve (105) is fixedly sleeved on the outer side of the inner liner (104), a number of honeycomb holes (1051) are evenly opened through the outer peripheral wall of the honeycomb sleeve (105), and the outer sheath (2) is fixedly sleeved on the outer side of the honeycomb sleeve (105).

2. The cable with good wear resistance according to claim 1, characterized in that, The copper conductor (102) is made of high-purity oxygen-free copper, the inner sheath (101) is made of cross-linked polyethylene, the filling layer (103) is made of high-elasticity flame-retardant polyurethane foam strip, the inner lining layer (104) is made of chlorinated polyethylene, the honeycomb sleeve (105) is made of glass fiber reinforced modified polypropylene composite material, the outer sheath (2) is made of high-density polyethylene, and the wear-resistant layer (3) is made of nano-ceramic particle reinforced fluororubber material.

3. A cable connection assembly with good wear resistance, applied to the wear-resistant cable according to any one of claims 1-2, characterized in that, Includes a housing (4), a cable connection unit (6) is installed on the inner bottom of the housing (4), and two sealing units (7) are symmetrically installed on both sides of the housing (4). The cable connection unit (6) includes a connecting component (61) and a locking component (62). The connecting component (61) includes an insulating sleeve (611). Three insulating sleeves (611) are fixedly connected at equal intervals on the inner bottom of the housing (4). A conductive seat (613) is fixedly connected to the inner side of the insulating sleeve (611). Two receiving grooves (616) are symmetrically opened on the top of the conductive seat (613). A conductive block (615) is provided in each receiving groove (616). A second semi-circular groove (6151) is opened on the top of the conductive block (615). Two transverse through holes (6131) are symmetrically opened on both sides of the conductive seat (613). The two transverse through holes (6131) and the two receiving grooves (616) are connected. In a one-to-one correspondence, a vertically arranged first semi-circular groove (6132) is opened on one side of the inner cavity of the receiving groove (616). Two insulating crossbars (614) are symmetrically connected through the three insulating shells (611). The two insulating crossbars (614) correspond to the conductive blocks (615) on both sides respectively. One end of the three conductive blocks (615) on the same side is fixedly sleeved on the outside of the corresponding insulating crossbar (614). A rotating plate (612) is fixedly sleeved on both insulating crossbars (614). The two rotating plates (612) are symmetrically arranged. The bottom end of the rotating plate (612) is provided with a notch for avoiding the conductive seat (613).

4. A cable connection assembly with good wear resistance according to claim 3, characterized in that, The locking component (62) corresponds one-to-one with the rotating plate (612). The locking component (62) includes an upper pressure block (621), which is fixedly connected to the outer wall of the rotating plate (612). The bottom inner side of the housing (4) is fixedly connected to a lower pressure block (624) that corresponds one-to-one with the upper pressure block (621). The bottom of the rotating plate (612) and the top of the lower pressure block (624) are both provided with arc-shaped pressure grooves (625). The arc-shaped pressure grooves (625) are opened in the middle. The rotating plate (612) is provided with an arc-shaped anti-slip groove (626), and a first locking screw (622) is provided at the top of the rotating plate (612). A fixing block (623) corresponding to the first locking screw (622) is fixedly connected to the inner side wall of the housing (4). The fixing block (623) is provided with a threaded hole for threaded connection with the first locking screw (622). One end of the first locking screw (622) passes through the rotating plate (612) and is threadedly connected to the threaded hole on the fixing block (623).

5. A cable connection assembly with good wear resistance according to claim 4, characterized in that, Two sealing units (7) are symmetrically arranged on both sides of the housing (4). Each sealing unit (7) includes an end sealing component (71) and a pressing component (72). The end sealing component (71) includes an outer sleeve (711). The outer sleeve (711) is fixedly connected to the outer wall of the housing (4). A rotating sleeve (712) is provided on the inner side of the outer sleeve (711). A rubber sealing sleeve (715) is provided on the inner side of the rotating sleeve (712). A beveled part (7151) is provided on the outer peripheral wall of the rubber sealing sleeve (715). The inner peripheral wall of the rotating sleeve (712) is adapted to fit the beveled part (7151). The diameter of the rubber sealing sleeve (715) gradually decreases from the end near the housing (4) to the end away from the housing (4). The rotating sleeve (712), the rubber sealing sleeve (715), and the housing (4) are all transversely perforated for the cable to pass through.

6. A cable connection assembly with good wear resistance according to claim 5, characterized in that, The outer peripheral wall of the rotating sleeve (712) is fixedly connected with a number of slide bars (714) arranged in a circular array. The inner peripheral wall of the outer sleeve (711) is provided with a number of slide grooves (713) that correspond one-to-one with and are adapted to the slide bars (714). The slide bars (714) are slidably disposed in the corresponding slide grooves (713).

7. A cable connection assembly with good wear resistance according to claim 5, characterized in that, The clamping component (72) includes a rotating ring (721), which is rotatably sleeved on the outside of the rotating sleeve (712). A connecting rod (722) is fixedly connected to the outer wall of the rotating ring (721). An oblique guide groove (725) is longitudinally opened through the upper part of the outer sleeve (711). The distance from one end of the oblique guide groove (725) to the housing (4) is greater than the distance from the other end to the housing (4). The top end of the connecting rod (722) extends out of the oblique guide groove (725) and is rotatably connected to a rotating wheel (723). The rotating wheel (723) is positioned above the housing (4). An arc-shaped baffle (724) is fixedly sleeved on the outer side of the connecting rod (722). The lower surface of the arc-shaped baffle (724) is in contact with the outer surface of the outer sleeve (711), and the curvature of the arc-shaped baffle (724) is adapted to the outer circumferential curvature of the outer sleeve (711). The arc-shaped baffle (724) is correspondingly arranged with the inclined guide groove (725), and the size of the arc-shaped baffle (724) is larger than the size of the inclined guide groove (725), which can completely block the inclined guide groove (725).

8. A cable connection assembly with good wear resistance according to claim 4, characterized in that, The transverse through hole (6131), the first semicircular groove (6132), and the second semicircular groove (6151) are all adapted to the copper conductor (102).

9. A cable connection assembly with good wear resistance according to claim 3, characterized in that, The top and front of the housing (4) are open. An L-shaped cover plate (5) is provided on the housing (4) corresponding to the opening. The bottom two sides of the L-shaped cover plate (5) are rotatably connected to the bottom two sides of the housing (4) by a pin. A sealing gasket (9) is embedded in the edge of the opening of the housing (4) to improve the sealing performance between the housing (4) and the L-shaped cover plate (5). The sealing gasket (9) is made of rubber.

10. A cable connection assembly with good wear resistance according to claim 9, characterized in that, The L-shaped cover plate (5) is provided with a second locking bolt (8) at the top. The top of the housing (4) is provided with a threaded hole for threaded connection with the second locking bolt (8). One end of the second locking bolt (8) passes through the L-shaped cover plate (5) and is threadedly connected to the threaded hole at the top of the housing (4).

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