An industrial low-smoke, halogen-free, fire-resistant low-voltage cable

Abstract

The present invention discloses an industrial low-smoke, halogen-free, fire-resistant low-voltage cable, which relates to the technical field of low-voltage cables. An upper welding strip is fixedly installed in the middle of the top of the upper arc-shaped fitting block, and auxiliary stabilizing support blocks are symmetrically installed at both ends of the top of the upper welding strip. Arc-shaped anti-collision guide blocks are fixedly installed at both ends of the upper welding strip at both sides of the auxiliary stabilizing support block. A lower welding strip is fixedly installed in the middle of the bottom end of the lower arc-shaped fitting block, and a trapezoidal limit frame is symmetrically fixedly installed at the bottom end of the lower welding strip. The present invention provides an auxiliary transfer function for cable transportation and installation, reduces the labor intensity of carrying cables, improves the stability of cable placement after laying, prevents cables from rolling and skewing, affecting normal routing, or preventing cables from rolling from a height to cause safety problems, and after the cables slide, pulling pressure is generated on the connection points, which can easily cause short circuits and fires. Improving the stability of cable placement can effectively improve the safety of cable use.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage cables, in particular to an industrial low-smoke, halogen-free, fire-resistant low-voltage cable. Background Art

[0002] Industrial low-smoke, halogen-free, fire-resistant low-voltage cable is a cable designed specifically for industrial environments. It is mainly used in power transmission and control systems, especially in situations where high safety and environmental protection requirements are required. Its main features include low smoke, halogen-free, flame retardant and fire resistant. Low smoke and halogen-free means that the cable surface is made of halogen-free materials (such as polyolefin-based materials), which will not release toxic hydrogen halide gas when burned. The flame retardant and fire resistant properties ensure that the cable can maintain a certain integrity and operation time in the event of a fire.

[0003] However, during transportation and movement, the cable surface currently rubs against the installation surface, which can easily cause damage to the cable surface. The cable is heavy, and direct dragging of the cable is labor-intensive. After the cable is subsequently placed and installed, it is prone to rolling. If the cable falls when it is installed at a high place, it will exert pressure on the connection and cause a short circuit. Therefore, the present invention provides an industrial low-smoke, halogen-free, fire-resistant, low-voltage cable to meet people's needs. Summary of the Invention

[0004] The present invention provides an industrial low-smoke, halogen-free, fire-resistant, low-voltage cable, which can effectively solve the problems proposed in the above-mentioned background technology that the cable surface rubs against the installation plane during transportation and movement, which easily causes damage to the cable surface; the cable is heavy, and the labor intensity of direct dragging is high; and after the subsequent cable is placed and installed, it is easy to roll; when the cable is installed at a high place, it falls, which will cause pressure on the connection and cause a short circuit.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: an industrial low-smoke, halogen-free, fire-resistant, low-voltage cable, comprising three cores, the surfaces of which are provided with halogen-free, fire-resistant rubber sleeves, and the surfaces of which are provided with a convenient transport auxiliary stabilization mechanism;

[0006] The convenient transport auxiliary stabilization mechanism includes a limiting ring groove;

[0007] A limiting ring groove is provided on the surface of the halogen-free fire-resistant rubber sleeve, and a semicircular adhesive layer is symmetrically installed inside the limiting ring groove. Semicircular wooden cling blocks are installed on the surfaces of the two semicircular adhesive layers. Upper arc-shaped cling blocks are installed on the top of the surfaces of the two semicircular wooden cling blocks, and lower arc-shaped cling blocks are installed on the bottom of the surfaces of the two semicircular wooden cling blocks.

[0008] An upper welding strip is fixedly installed in the middle of the top end of the upper arc-shaped fitting block, auxiliary stabilizing support blocks are symmetrically installed at both ends of the top of the upper welding strip, arc-shaped anti-collision guide blocks are installed at both ends of the upper welding strip, and a lower welding strip is fixedly installed in the middle of the bottom end of the lower arc-shaped fitting block, and trapezoidal limiting frames are symmetrically installed at the bottom end of the lower welding strip, and auxiliary transfer balls are embedded and clamped at the bottom of the two trapezoidal limiting frames.

[0009] According to the above technical solution, the surfaces of the three cores are all extruded and wrapped with insulating layers, the surfaces of the three insulating layers are all sleeved with shielding layers, and the outer sides of the three shielding layers are sleeved with halogen-free fire-resistant rubber sleeves;

[0010] An outer rubber protective layer is fitted on the inner wall of the halogen-free fire-resistant rubber sleeve, a heat insulating layer is fitted on the inner wall of the outer rubber protective layer, and an inner rubber protective layer is fixedly fitted on the inner wall of the heat insulating layer;

[0011] Locking screw holes are symmetrically opened in the middle of the surfaces of the two semicircular wooden fitting blocks, and both ends of the bottom of the upper arc-shaped fitting block and the two ends of the top of the lower arc-shaped fitting block are fixedly connected with elastic telescopic strips. A spliced ​​arc-shaped wooden strip is fixedly installed between the two elastic telescopic strips on the same side, and hexagonal locking studs are symmetrically installed through the middle of the two spliced ​​arc-shaped wooden strips.

[0012] According to the above technical solution, a deflection metal cylinder is symmetrically rotated and installed in the middle of the top of the upper welding strip, and square limiting holes are provided at the tops of the two deflection metal cylinders. A left spliced ​​long rod is fixedly connected to the middle of one deflection metal cylinder, and a limiting groove is provided at one end of the left spliced ​​long rod. A right spliced ​​long rod is fixedly connected to the middle of the other deflection metal cylinder, and an elastic limiting metal block is symmetrically fixedly connected to one end of the right spliced ​​long rod. A limiting long plate is fitted between the tops of the two deflection metal cylinders, and square magnetic blocks are symmetrically fixedly connected to the two ends of the bottom of the limiting long plate.

[0013] According to the above technical solution, the ends of the two semicircular wooden cling blocks are fitted together, and the depth of the limiting ring groove is greater than the sum of the thicknesses of the semicircular adhesive layer and the semicircular wooden cling blocks;

[0014] The lengths of the upper arc-shaped fitting block and the lower arc-shaped fitting block are the same as the length of the limiting ring groove.

[0015] According to the above technical solution, the two spliced ​​arc-shaped wooden strips correspond to the middle parts of the two semicircular wooden cling blocks, the hexagonal locking studs and the locking screw holes correspond to each other, and the ends of the hexagonal locking studs are inserted into the locking screw holes;

[0016] The upper arc-shaped fitting block, the lower arc-shaped fitting block, the four elastic telescopic strips and the two spliced ​​arc-shaped wooden strips are spliced ​​and surrounded on the surfaces of the two semicircular wooden close-fitting blocks.

[0017] According to the above technical solution, the length and width of the square limiting hole and the square magnetic block are the same, and the square magnetic block is embedded in the interior of the square limiting hole.

[0018] According to the above technical solution, an auxiliary installation protection mechanism is provided on the inner side of the inner rubber protective layer;

[0019] The auxiliary installation protection mechanism includes a center positioning shaft;

[0020] A center positioning shaft is installed at the middle position inside the inner rubber protective layer, and an arc-shaped positioning groove is opened at equal intervals on the surface of the center positioning shaft along the circumferential direction. An outer limiting slot is opened at equal intervals on the surface of the center positioning shaft at one side of the arc-shaped positioning groove, and an inner limiting slot is opened inside the outer limiting slot. T-shaped limiting strips are installed at equal intervals on the surface of the center positioning shaft along the circumferential direction, and arc-shaped splicing sealing strips are symmetrically fixedly connected to the two sides of the T-shaped limiting strip, and a gourd-shaped limiting rubber block is fixedly connected to the middle of the T-shaped limiting strip at equal intervals.

[0021] The inner wall of the inner rubber protective layer is fitted with a shaping wrapping layer, and the interior of the shaping wrapping layer is embedded with arc-shaped elastic protective silicone strips equidistantly installed along the circumferential direction. The interior of the shaping wrapping layer is installed with a metal pressure-resistant strip at a position on one side of the arc-shaped elastic protective silicone strip, and the interior of the shaping wrapping layer is embedded with a metal connecting arc-shaped piece at a position corresponding to the arc-shaped elastic protective silicone strip, and the inner side of the T-shaped limiting strip is filled with a sealing filler.

[0022] According to the above technical solution, the three cores are equidistantly arranged around the outside of the central positioning axis, and the three cores correspond to the three arc-shaped positioning grooves respectively. The shape of the outer limit slot and the inner limit slot after being connected is the same as the shape of the gourd-shaped limit rubber block, and the gourd-shaped limit rubber block is movably embedded in the inside of the outer limit slot and the inner limit slot.

[0023] According to the above technical solution, the adjacent arc-shaped splicing sealing strips are in contact with each other, and the inner wall of the arc-shaped splicing sealing strip is in contact with the surface of the shielding layer.

[0024] According to the above technical solution, the arc-shaped elastic protective silicone strip is located outside the T-shaped limit strip, and the positions of the metal compression strip and the core body correspond to each other;

[0025] The metal connecting arc piece is attached to the surface of the arc-shaped elastic protective silicone strip. The number of the arc-shaped elastic protective silicone strip, the metal connecting arc piece and the metal pressure-resistant strip are all three. The two ends of the metal connecting arc piece are connected to the edges of the two adjacent metal pressure-resistant strips.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0027] 1. It is equipped with a convenient transfer auxiliary stabilization mechanism. The auxiliary transfer ball can improve the flexibility of the cable itself, provide auxiliary transfer for cable transportation and installation, and reduce the labor intensity of handling cables. The auxiliary stabilization support block plays a supporting and stable role for the cable, improving the stability of the cable after laying, preventing the cable from rolling and skewing and affecting the normal routing or the cable from rolling from a high place, which may cause safety problems. After the cable slides, it will generate pulling pressure on the connection point, which may easily cause a short circuit and fire. Improving the stability of the cable placement can effectively improve the safety of cable use. After the auxiliary stabilization support block contacts the installation plane, it plays a positioning role for the three cores, so that the three cores at the cross section maintain a certain position, providing a certain auxiliary reference for the staff to identify the type of each core.

[0028] At the same time, the upper arc-shaped fitting block and the lower arc-shaped fitting block can rotate around the surface of the two semicircular wooden close-fitting blocks, which is convenient for the staff to adjust the position of the auxiliary transfer balls and the auxiliary stable support blocks, and adjust the auxiliary transfer balls and the auxiliary stable support blocks to contact the ground during transportation and installation, respectively. The hexagonal locking studs and locking screw holes can be used to match the spliced ​​arc-shaped wooden strips and the semicircular wooden close-fitting blocks, so that the auxiliary transfer balls and the auxiliary stable support blocks are more stable after adjustment.

[0029] 2. The arc-shaped anti-collision guide blocks are distributed on both sides of the auxiliary stable support block. When the upper arc-shaped fitting block is rotated and adjusted, the arc-shaped anti-collision guide blocks can first contact the installation plane, providing a certain guiding effect on the rotation process, preventing the auxiliary stable support block from directly contacting and colliding with the installation plane and causing the cable to shake. The arc-shaped anti-collision guide blocks improve the stability of the adjustment process.

[0030] 3. The semicircular wooden fitting block provides a certain guide for the rotation of the upper arc fitting block and the lower arc fitting block, and the hexagonal locking stud can be smoothly fixed to it without causing damage to the internal components of the cable. The elastic expansion strip's own elastic expansion characteristics provide a certain convenience for being sleeved on the surface of the semicircular wooden fitting block, and the inner walls of the upper arc fitting block and the lower arc fitting block are embedded in the limiting ring groove, which improves the stability of the installation and prevents the upper arc fitting block and the lower arc fitting block from shifting in position and affecting the overall stability of the cable.

[0031] 4. The left and right spliced ​​long rods on the surfaces of adjacent cables are connected to each other, and the elastic limiting metal block is embedded in the limiting groove, which improves the connection strength between adjacent cables and makes the adjacent cables stable when placed close to each other. It also plays a certain role in limiting the placement of adjacent cables, so that adjacent cables are placed neatly and the spacing between them is consistent. At the same time, the square magnetic block is embedded in the square limiting hole to limit the deflection metal cylinder firmly and prevent it from shaking and offsetting after the position is adjusted.

[0032] 5. An auxiliary installation protection mechanism is provided, which uses the central positioning shaft and arc-shaped positioning groove to position and install the core body, so that the core bodies maintain the same spacing. At the same time, the T-shaped limit strip is wrapped around the outside, and the arc-shaped splicing sealing strips fit together, which presses and stabilizes the core body, thereby improving the stability of the core body during cable production;

[0033] The outer limit slot and the inner limit slot are used to limit the position of the gourd-shaped limit rubber block, so that there are two stages when the gourd-shaped limit rubber block is installed and limited. It also stabilizes the T-shaped limit strip and the arc splicing sealing strip in two stages. In the first stage, the T-shaped limit strip and the arc splicing sealing strip are initially clamped on the center positioning axis, and there is a large space between the T-shaped limit strip and the center positioning axis for the core body installation. In the second stage, the T-shaped limit strip and the arc splicing sealing strip move further toward the center positioning axis to press the core body firmly, and the arc splicing sealing strips are spliced ​​and sealed with each other. The two stages are performed in sequence, which can effectively install and press the core body to fix it, and prevent the core body from skewing during the cable production process, resulting in changes and errors in the relative spacing between the core bodies, affecting the normal use of the cable.

[0034] 6. The plastic wrapping layer and the arc-shaped elastic protective silicone strip are wrapped around the surface of the T-shaped limit strip and the arc-shaped splicing sealing strip, which plays a buffering and protective role on the cable core, prevents the T-shaped limit strip from being squeezed and damaged, relieves and absorbs the pressure generated by external squeezing of the cable, reduces the pressure on the core, and fully maintains the integrity and normal use of the cable core. At the same time, the metal compression strip improves the overall structural strength of the cable and plays a certain role in preventing cutting. The metal connecting arc piece decomposes the pressure on the metal compression strip and can resist the pressure through tension, thereby improving the internal stability of the cable.

[0035] To sum up, by combining the convenient transport auxiliary stabilization mechanism and the auxiliary installation protection mechanism, the cable is protected from the inside and the outside respectively. The outside is to provide support and protection after the cable is installed and connected, which improves the stability of the cable, and can reduce the pressure of the cable on the connection, and prevent the cable from rolling and sliding into a suspended state, causing the cable connection to be pulled down by gravity and break, thereby improving the safety of cable use. The inside is to protect the core inside the cable, buffer and isolate the pressure caused by the outside world, and prevent the pressure from acting on the core to cause damage to the core and affect the use of the cable. Multiple protections make the cable itself strong and stable after installation, and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached figure:

[0038] Figure 1 It is a structural schematic diagram of the present invention;

[0039] Figure 2 is a schematic cross-sectional view of the cable of the present invention;

[0040] Figure 3 Schematic diagram of the installation structure of the auxiliary transfer ball of the present invention;

[0041] Figure 4 This is a schematic diagram of the installation structure of the present invention for splicing curved wooden strips;

[0042] Figure 5 This is a schematic structural diagram of the convenient transport auxiliary stabilization mechanism of the present invention;

[0043] Figure 6 This is a schematic diagram of the installation structure of the left spliced ​​long rod of the present invention;

[0044] Figure 7 This invention Figure 6 A magnified schematic diagram of area A in the middle;

[0045] Figure 8 This is a schematic diagram of the installation structure of the semicircular wooden cling block of the present invention;

[0046] Figure 9 This is a schematic diagram of the installation structure of the metal connecting arc piece of the present invention;

[0047] Figure 10 This is a schematic diagram of the installation structure of the center positioning shaft of the present invention;

[0048] Figure 11 It is a structural diagram of the auxiliary installation protection mechanism of the present invention;

[0049] Numbers in the figure: 1, core; 2, insulation layer; 3, shielding layer; 4, inner rubber protective layer; 5, thermal insulation layer; 6, outer rubber protective layer; 7, halogen-free fire-resistant rubber sleeve;

[0050] 8. Convenient transfer auxiliary stabilization mechanism; 801. Limiting ring groove; 802. Semicircular adhesive layer; 803. Semicircular wooden cling block; 804. Locking screw hole; 805. Upper arc fitting block; 806. Lower arc fitting block; 807. Elastic telescopic strip; 808. Spliced ​​arc wooden strip; 809. Hexagonal locking stud; 810. Upper welding strip; 811. Auxiliary stabilization support block; 812. Arc anti-collision guide block; 813. Lower welding strip; 814. Trapezoidal limiting frame; 815. Auxiliary transfer ball; 816. Deflection metal cylinder; 817. Square limiting hole; 818. Left splicing long rod; 819. Limiting groove; 820. Right splicing long rod; 821. Elastic limiting metal block; 822. Limiting long plate; 823. Square magnetic block;

[0051] 9. Auxiliary installation protection mechanism; 901. Center positioning shaft; 902. Arc-shaped positioning groove; 903. Outer limit slot; 904. Inner limit slot; 905. T-shaped limit strip; 906. Arc-shaped splicing sealing strip; 907. Gourd-shaped limit rubber block; 908. Shaping wrapping layer; 909. Arc-shaped elastic protective silicone strip; 910. Metal anti-compression strip; 911. Metal connecting arc piece; 912. Sealing filler. DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] Example: Figure 1-11 As shown, the present invention provides a technical solution, an industrial low-smoke halogen-free fire-resistant low-voltage cable, comprising three cores 1, the surfaces of the three cores 1 are extruded and wrapped with an insulating layer 2, the insulating layer 2 is extruded from insulating rubber, the surfaces of the three insulating layers 2 are sleeved with a shielding layer 3, the shielding layer 3 is wrapped with an aluminum-plastic composite tape shielding material, the outer sides of the three shielding layers 3 are sleeved with a halogen-free fire-resistant rubber sleeve 7, the halogen-free fire-resistant rubber sleeve 7 is extruded from a halogen-free polyolefin-based rubber, and the surface of the halogen-free fire-resistant rubber sleeve 7 is provided with a convenient transport auxiliary stabilization mechanism 8;

[0054] The convenient transport auxiliary stabilization mechanism 8 includes a limiting ring groove 801, a semicircular adhesive layer 802, a semicircular wooden clinging block 803, a locking screw hole 804, an upper arc-shaped fitting block 805, a lower arc-shaped fitting block 806, an elastic telescopic strip 807, a spliced ​​arc-shaped wooden long strip 808, a hexagonal locking stud 809, an upper welding strip 810, an auxiliary stabilization support block 811, an arc-shaped anti-collision guide block 812, a lower welding strip 813, a trapezoidal limiting frame 814, an auxiliary transport ball 815, a deflection metal cylinder 816, a square limiting hole 817, a left spliced ​​long rod 818, a limiting groove 819, a right spliced ​​long rod 820, an elastic limiting metal block 821, a limiting long plate 822 and a square magnetic block 823;

[0055] A limiting ring groove 801 is provided on the surface of the halogen-free fire-resistant rubber sleeve 7, and a semicircular adhesive layer 802 is symmetrically fitted inside the limiting ring groove 801, and semicircular wooden clinging blocks 803 are fitted on the surfaces of the two semicircular adhesive layers 802. Upper arc-shaped fitting blocks 805 are fitted on the top of the surfaces of the two semicircular wooden clinging blocks 803, and lower arc-shaped fitting blocks 806 are fitted on the bottom of the surfaces of the two semicircular wooden clinging blocks 803. The ends of the two semicircular wooden clinging blocks 803 are fitted with each other, and the depth of the limiting ring groove 801 is greater than the sum of the thicknesses of the semicircular adhesive layer 802 and the semicircular wooden clinging blocks 803. The lengths of the upper arc-shaped fitting blocks 805 and the lower arc-shaped fitting blocks 806 are the same as the length of the limiting ring groove 801;

[0056] An upper welding strip 810 is fixedly installed in the middle of the top of the upper arc-shaped fitting block 805, and auxiliary stabilizing support blocks 811 are symmetrically installed at both ends of the top of the upper welding strip 810. Arc-shaped anti-collision guide blocks 812 are fixedly installed at both ends of the upper welding strip 810 on both sides of the auxiliary stabilizing support block 811. A lower welding strip 813 is fixedly installed in the middle of the bottom end of the lower arc-shaped fitting block 806, and a trapezoidal limit frame 814 is symmetrically fixedly installed at the bottom end of the lower welding strip 813. Auxiliary transfer balls 815 are embedded and connected at the bottom of the two trapezoidal limit frames 814. The auxiliary transfer balls 815 can be used to improve the flexibility of the cable itself, providing auxiliary transfer for cable transportation and installation. The auxiliary stabilizing support block 811 plays a role in supporting and stabilizing the cable, improving the stability of the cable after laying, and preventing the cable from rolling and skewing, affecting the normal routing, or the cable from rolling from a high place, causing safety problems. After the cable slides, it will generate pulling pressure on the connection point, which may easily cause a short circuit and fire. Improving the stability of the cable placement can effectively improve the safety of cable use. After the auxiliary stabilizing support block 811 contacts the installation plane, it plays a role in positioning the three core bodies 1, so that the three core bodies 1 at the cross section maintain a certain position, providing a certain auxiliary reference for the staff to identify the type of each core body 1.

[0057] At the same time, the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806 can rotate around the surfaces of the two semicircular wooden close-fitting blocks 803, making it convenient for the staff to adjust the positions of the auxiliary transfer balls 815 and the auxiliary stable support blocks 811. The auxiliary transfer balls 815 and the auxiliary stable support blocks 811 are adjusted to contact the ground during transportation and installation, and the hexagonal locking studs 809 and the locking screw holes 804 can be used to match the spliced ​​arc-shaped wooden strips 808 and the semicircular wooden close-fitting blocks 803, so that the auxiliary transfer balls 815 and the auxiliary stable support blocks 811 are more stable after adjustment.

[0058] The arc-shaped anti-collision guide blocks 812 are distributed on both sides of the auxiliary stabilizing support block 811. When the upper arc-shaped fitting block 805 is rotated and adjusted, the arc-shaped anti-collision guide blocks 812 can first contact the installation plane, providing a certain guiding effect during the rotation process, preventing the auxiliary stabilizing support block 811 from directly contacting and colliding with the installation plane and causing the cable to shake. The arc-shaped anti-collision guide blocks 812 improve the stability of the adjustment process.

[0059] The semicircular wooden cling block 803 provides a certain guide for the rotation of the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806, and the hexagonal locking screw 809 can be smoothly fixed to it without causing damage to the internal components of the cable. The elastic and retractable characteristics of the elastic expansion strip 807 itself provide a certain convenience for being sleeved on the surface of the semicircular wooden cling block 803, and the inner walls of the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806 are embedded in the limiting ring groove 801, which improves the stability of the installation and prevents the position deviation of the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806 from affecting the overall stability of the cable.

[0060] The inner wall of the halogen-free fire-resistant rubber sleeve 7 is fitted with an outer rubber protective layer 6, and the inner wall of the outer rubber protective layer 6 is fitted with a thermal insulation layer 5. The thermal insulation layer 5 is made of ceramic silicone rubber, and the inner wall of the thermal insulation layer 5 is fixedly mounted with an inner rubber protective layer 4. The inner rubber protective layer 4 and the outer rubber protective layer 6 are both extruded from high-temperature resistant rubber. When the halogen-free fire-resistant rubber sleeve 7 is ignited by an external fire source, no hydrogen halide gas is released, and less smoke and dust are generated. The high-temperature resistant properties of the outer rubber protective layer 6 and the inner rubber protective layer 4 themselves improve the fire and heat resistance of the cable. The thermal insulation layer 5 can effectively isolate the external heat and prevent a large amount of heat from affecting the core 1.

[0061] The two semicircular wooden fitting blocks 803 are symmetrically provided with locking screw holes 804 in the middle of the surface, and the two ends of the bottom of the upper arc fitting block 805 and the two ends of the top of the lower arc fitting block 806 are fixedly connected with elastic telescopic strips 807. A spliced ​​arc-shaped wooden strip 808 is fixedly installed between the two elastic telescopic strips 807 on the same side, and the middle of the two spliced ​​arc-shaped wooden strips 808 are symmetrically penetrated with hexagonal locking studs 809. The two spliced ​​arc-shaped wooden strips 808 correspond to the middle of the two semicircular wooden fitting blocks 803, and the positions of the hexagonal locking studs 809 and the locking screw holes 804 correspond to each other. The ends of the hexagonal locking studs 809 are inserted into the interior of the locking screw holes 804. The upper arc fitting block 805, the lower arc fitting block 806, the four elastic telescopic strips 807 and the two spliced ​​arc-shaped wooden strips 808 are spliced ​​and surrounded on the surface of the two semicircular wooden fitting blocks 803;

[0062] A deflection metal cylinder 816 is symmetrically rotated and installed in the middle of the top of the upper welding strip 810. The tops of the two deflection metal cylinders 816 are both provided with square limiting holes 817. The middle of one deflection metal cylinder 816 is fixedly connected to a left spliced ​​long rod 818, and one end of the left spliced ​​long rod 818 is provided with a limiting groove 819. The middle of the other deflection metal cylinder 816 is fixedly connected to a right spliced ​​long rod 820, and one end of the right spliced ​​long rod 820 is symmetrically fixedly connected to an elastic limiting metal block 821. A limiting long plate 822 is fitted between the tops of the two deflection metal cylinders 816, and the two ends of the bottom of the limiting long plate 822 are symmetrically fixedly connected with square magnetic blocks 823. The square limiting holes 817 are provided on the tops of the two deflection metal cylinders 816. 17 and the square magnetic block 823 have the same length and width. The square magnetic block 823 is embedded in the inside of the square limiting hole 817. The left spliced ​​long rod 818 and the right spliced ​​long rod 820 on the surface of the adjacent cables correspond to each other, and the elastic limiting metal block 821 is embedded in the limiting groove 819, which improves the connection strength between the adjacent cables, so that the adjacent cables are stable when placed close to each other, and also plays a certain role in limiting the placement of the adjacent cables, so that the adjacent cables are placed neatly and the spacing between them is consistent. At the same time, the square magnetic block 823 is embedded in the square limiting hole 817 to limit the deflection metal cylinder 816 firmly to prevent it from shaking and offsetting after the position is adjusted;

[0063] An auxiliary installation protection mechanism 9 is provided on the inner side of the inner rubber protection layer 4;

[0064] The auxiliary installation protection mechanism 9 includes a central positioning shaft 901, an arc-shaped positioning groove 902, an outer limit slot 903, an inner limit slot 904, a T-shaped limit strip 905, an arc-shaped splicing sealing strip 906, a gourd-shaped limit rubber block 907, a shaping wrapping layer 908, an arc-shaped elastic protective silicone strip 909, a metal anti-compression strip 910, a metal connecting arc piece 911 and a sealing filler 912;

[0065] A center positioning shaft 901 is installed at the middle position inside the inner rubber protective layer 4, and an arc-shaped positioning groove 902 is opened at equal distances on the surface of the center positioning shaft 901 along the circumferential direction, and an outer limiting card groove 903 is opened at equal distances on the surface of the center positioning shaft 901 at one side of the arc-shaped positioning groove 902, and an inner limiting card groove 904 is opened inside the outer limiting card groove 903. A T-shaped limiting strip 905 is installed at equal distances on the surface of the center positioning shaft 901 along the circumferential direction, and the two sides of the T-shaped limiting strip 905 are symmetrically fixedly connected with an arc-shaped splicing sealing strip 906, and the middle of the T-shaped limiting strip 905 is fixedly connected with a gourd-shaped limiting rubber soft block 907 at equal distances. The three cores 1 are equidistantly surrounded by the outside of the center positioning shaft 901, and the three cores 1 are respectively connected to the three arc The outer limiting card slot 903 and the inner limiting card slot 904 are connected to each other in the same shape as the gourd-shaped limiting rubber block 907. The gourd-shaped limiting rubber block 907 is movably embedded in the outer limiting card slot 903 and the inner limiting card slot 904. Adjacent arc-shaped splicing sealing strips 906 fit together. The inner wall of the arc-shaped splicing sealing strip 906 is in contact with the surface of the shielding layer 3. The central positioning axis 901 and the arc-shaped positioning groove 902 are used to position and install the core body 1, so that the core bodies 1 maintain the same spacing with each other. At the same time, the T-shaped limiting strip 905 is used to surround the outside. The arc-shaped splicing sealing strips 906 fit together, which presses the core body 1 firmly, thereby improving the stability of the core body 1 during cable production.

[0066] The outer limit card slot 903 and the inner limit card slot 904 are used to limit the position of the gourd-shaped limit rubber soft block 907, so that the gourd-shaped limit rubber soft block 907 is installed and limited in two stages, and the T-shaped limit strip 905 and the arc splicing sealing strip 906 are also stabilized in two stages. In the first stage, the T-shaped limit strip 905 and the arc splicing sealing strip 906 are initially clamped on the center positioning shaft 901, and there is a large space between them and the center positioning shaft 901 for the core body 1 to be installed. In the second stage, the T-shaped limit strip 905 and the arc splicing sealing strip 906 move further toward the center positioning shaft 901, pressing the core body 1 firmly, and the arc splicing sealing strips 906 are spliced ​​and sealed with each other. The two stages are performed in sequence, which can effectively install and press the core body 1 tightly, and prevent the core body 1 from tilting during the cable production process, resulting in changes and errors in the relative spacing between the core bodies 1 that affect the normal use of the cable.

[0067] The inner wall of the inner rubber protective layer 4 is fitted with a shaping wrapping layer 908, and the interior of the shaping wrapping layer 908 is embedded with an arc-shaped elastic protective silicone strip 909 at equal intervals along the circumferential direction. The interior of the shaping wrapping layer 908 is provided with a metal pressure-resistant strip 910 at a position on one side of the arc-shaped elastic protective silicone strip 909, and a metal connecting arc-shaped piece 911 is embedded in the corresponding position of the interior of the shaping wrapping layer 908 and the arc-shaped elastic protective silicone strip 909. The inner side of the T-shaped limiting strip 905 is filled with a sealing filler 912, and the arc-shaped elastic protective silicone strip 909 is located on the outside of the T-shaped limiting strip 905. The position of the metal pressure-resistant strip 910 corresponds to that of the core 1, and the metal connecting arc-shaped piece 911 is fitted on the surface of the arc-shaped elastic protective silicone strip 909. The arc-shaped elastic protective silicone strip 909, the metal connecting arc-shaped piece 911 and the metal There are three compression strips 910 in each case, and both ends of the metal connecting arc piece 911 are connected to the edges of the two adjacent metal compression strips 910. The plastic wrapping layer 908 and the arc-shaped elastic protective silicone strip 909 are surrounded by the surface of the T-shaped limiting strip 905 and the arc-shaped splicing sealing strip 906, which plays a buffering and protective role on the cable core 1, preventing the T-shaped limiting strip 905 from being squeezed and damaged, alleviating and absorbing the pressure generated by external squeezing of the cable, reducing the pressure on the core 1, and fully maintaining the integrity and normal use of the cable core 1. At the same time, the metal compression strip 910 improves the overall structural strength of the cable and plays a certain role in preventing cutting. The metal connecting arc piece 911 decomposes the pressure on the metal compression strip 910, and can resist the pressure through tension, thereby improving the stability inside the cable.

[0068] The working principle and usage process of the present invention are as follows: First, during cable production, three T-shaped limit strips 905 are equidistantly wrapped around the outside of the central positioning shaft 901, and the gourd-shaped limit rubber soft block 907 corresponds to the outer limit card slot 903. The gourd-shaped limit rubber soft block 907 is soft, and the gourd-shaped limit rubber soft block 907 is inserted into the inner part of the outer limit card slot 903, thereby playing the first stage of positioning and stabilizing the T-shaped limit strip 905 and the arc-shaped splicing sealing strip 906. At this time, the T-shaped limit strip 905 is clamped on the outer side of the central positioning shaft 901, and a certain distance is maintained between adjacent arc-shaped splicing sealing strips 906, so that a certain space is left between the T-shaped limit strip 905 and the central positioning shaft 901, and the three core bodies 1 can be smoothly inserted into the interior of this space, and correspond to the position of the arc-shaped positioning groove 902, which plays a preliminary limiting installation role for the core body 1;

[0069] Then, the T-shaped limit strip 905 is squeezed inward, and the end of the gourd-shaped limit rubber block 907 is pushed into the inner limit slot 904, which plays the second stage of positioning and installation for the T-shaped limit strip 905. The arc-shaped splicing sealing strips 906 at both ends of adjacent T-shaped limit strips 905 contact and splice each other, pressing and fixing the core 1. One end of the shielding layer 3 on the outside of the core 1 contacts the inner wall of the arc-shaped splicing sealing strip 906, and the other end is embedded in the arc-shaped positioning groove 902. The gap inside the T-shaped limit strip 905 is filled with a sealing filler 912;

[0070] The shaping wrapping layer 908 is tightly wrapped around the surface of the T-shaped limit strip 905 and the arc-shaped splicing sealing strip 906. The arc-shaped elastic protective silicone strip 909 inside the shaping wrapping layer 908 corresponds to the position of the T-shaped limit strip 905. The metal compression strip 910 corresponds to the position of the core 1. Then, the inner rubber protective layer 4 is sleeved on the surface of the shaping wrapping layer 908. The thermal insulation layer 5, the outer rubber protective layer 6 and the halogen-free fire-resistant rubber sleeve 7 are sleeved and extruded in sequence.

[0071] The surface of the halogen-free fire-resistant rubber sleeve 7 is equidistantly provided with limiting ring grooves 801, and the surface and inner wall of the semicircular bonding layer 802 are coated with adhesive so that it can fit inside the limiting ring groove 801, and the semicircular wooden close-fitting block 803 can also fit on its surface, and the two semicircular wooden close-fitting blocks 803 are spliced ​​together to form a circle, and the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806 are fixedly connected by an elastic expansion strip 807 and a spliced ​​arc-shaped wooden long strip 808. By utilizing the elastic expansion strip 807 itself, the staff sleeves it on the surface of the two semicircular wooden close-fitting blocks 803, and the hexagonal locking stud 809 corresponds to the locking screw hole 804. The hexagonal locking stud 809 can be used to lock and fix the spliced ​​arc-shaped wooden long strip 808 and the semicircular wooden close-fitting block 803;

[0072] When the cable is transported and moved for installation, it is necessary to pull and lay the entire cable, and make the auxiliary transfer ball 815 contact with the installation plane so that the cable skin is away from the installation plane. With the auxiliary transfer ball 815, the staff can drag and move the cable to the predetermined position more easily and reduce the wear of the cable skin. After determining the position, the hexagonal locking stud 809 can be screwed outwards and the semicircular wooden cling block 803 is no longer locked. At this time, the upper arc-shaped fitting block 805 and the lower arc-shaped fitting block 806 lose their limit and can rotate 18 degrees around the surface of the semicircular wooden cling block 803. 0 degrees, move the auxiliary transfer ball 815 upward, and rotate the auxiliary stabilizing support block 811 downward. During rotation, the arc-shaped anti-collision guide block 812 plays a guiding role, preventing the auxiliary stabilizing support block 811 from directly colliding with the ground. The auxiliary stabilizing support block 811 plays a supporting and stable role for the cable, so that the cable will not roll easily, reducing the risk of rolling from a high installation position (such as on a bridge). After rotating 180 degrees, the hexagonal locking stud 809 can be aligned with the locking screw hole 804 again, and the hexagonal locking stud 809 can be used to lock and fix it again;

[0073] When the cable is moved or placed, the square magnetic block 823 is embedded in the square limiting hole 817, which limits the left splicing long rod 818 and the right splicing long rod 820, so that they will not shake easily when the cable moves. If cables need to be installed side by side, the limiting long plate 822 and the square magnetic block 823 can be pushed downward to make the square magnetic block 823 disengage from the square limiting hole 817. Then the left splicing long rod 818 and the right splicing long rod 820 can be rotated 90 degrees to expand outward by the deflection metal cylinder 816. Between adjacent cables, the left splicing long rod 818 and the right splicing long rod 820 at the bottom of a cable are connected. The right splicing long rod 820 of the other cable corresponds to the elastic limiting metal block 821 inserted into the limiting groove 819 for limiting engagement, so that the left splicing long rod 818 and the right splicing long rod 820 are spliced ​​with each other, thereby improving the connection strength between adjacent cables, so that adjacent cables always maintain a certain distance between them, and the cables are arranged more neatly, preventing the cables from being tangled and affecting subsequent maintenance. After the deflection metal cylinder 816 rotates 90 degrees, the shape and direction of the square limiting hole 817 do not change, and the limiting long plate 822 and the square magnetic block 823 are used again to lock and fix the deflection metal cylinder 816;

[0074] During the use of the cable, if it is squeezed by external pressure, the arc-shaped elastic protective silicone strip 909 acts as a buffer to absorb the external pressure. The T-shaped limit strip 905 and the arc-shaped splicing sealing strip 906 also play a surrounding protection role to prevent the core 1 from being squeezed and deformed. The metal compression strip 910 improves the anti-fracture properties of the cable. After being compressed, the force is dispersed through the metal connecting arc piece 911, thereby improving the stability of the internal structure of the cable.

[0075] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An industrial low-smoke, halogen-free, fire-resistant, low-voltage cable comprising three cores (1), characterized in that: The surface of the core (1) is provided with a halogen-free fire-resistant rubber sleeve (7), and the surface of the halogen-free fire-resistant rubber sleeve (7) is provided with a convenient transport auxiliary stabilization mechanism (8); The convenient transport auxiliary stabilization mechanism (8) comprises a limiting ring groove (801); The surface of the halogen-free fire-resistant rubber sleeve (7) is provided with a limiting ring groove (801), the interior of the limiting ring groove (801) is symmetrically fitted with a semicircular adhesive layer (802), the surfaces of the two semicircular adhesive layers (802) are both fitted with a semicircular wooden close-fitting block (803), the tops of the surfaces of the two semicircular wooden close-fitting blocks (803) are fitted with an upper arc-shaped fitting block (805), and the bottoms of the surfaces of the two semicircular wooden close-fitting blocks (803) are fitted with a lower arc-shaped fitting block (806); An upper welding strip (810) is fixedly mounted on the middle of the top of the upper arc-shaped fitting block (805), auxiliary stabilizing support blocks (811) are symmetrically mounted on both ends of the top of the upper welding strip (810), and arc-shaped anti-collision guide blocks (812) are mounted on both ends of the upper welding strip (810). A lower welding strip (813) is fixedly mounted on the middle of the bottom of the lower arc-shaped fitting block (806), and trapezoidal limiting frames (814) are symmetrically mounted on the bottom of the lower welding strip (813), and auxiliary transfer balls (815) are embedded and clamped in the bottoms of the two trapezoidal limiting frames (814).

2. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The surfaces of the three cores (1) are all extruded and wrapped with insulating layers (2), the surfaces of the three insulating layers (2) are all sleeved with shielding layers (3), and the outer sides of the three shielding layers (3) are sleeved with halogen-free fire-resistant rubber sleeves (7); The inner wall of the halogen-free fire-resistant rubber sleeve (7) is fitted with an outer rubber protective layer (6), the inner wall of the outer rubber protective layer (6) is fitted with a heat insulating layer (5), and the inner wall of the heat insulating layer (5) is fixedly fitted with an inner rubber protective layer (4); The middle parts of the surfaces of the two semicircular wooden fitting blocks (803) are symmetrically provided with locking screw holes (804), the two ends of the bottom of the upper arc-shaped fitting block (805) and the two ends of the top of the lower arc-shaped fitting block (806) are fixedly connected with elastic telescopic strips (807), and a spliced ​​arc-shaped wooden strip (808) is fixedly installed between the two elastic telescopic strips (807) on the same side, and the middle parts of the two spliced ​​arc-shaped wooden strips (808) are symmetrically penetrated with hexagonal locking studs (809).

3. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 2, characterized in that: A deflection metal cylinder (816) is symmetrically rotated and installed in the middle of the top of the upper welding strip (810), and the tops of the two deflection metal cylinders (816) are both provided with square limiting holes (817). The middle of one of the deflection metal cylinders (816) is fixedly connected to a left spliced ​​long rod (818), and one end of the left spliced ​​long rod (818) is provided with a limiting groove (819). The middle of the other deflection metal cylinder (816) is fixedly connected to a right spliced ​​long rod (820), and one end of the right spliced ​​long rod (820) is symmetrically fixedly connected to an elastic limiting metal block (821). A limiting long plate (822) is fitted between the tops of the two deflection metal cylinders (816), and the two ends of the bottom of the limiting long plate (822) are symmetrically fixedly connected to square magnetic blocks (823).

4. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The ends of the two semicircular wooden clinging blocks (803) are fitted together, and the depth of the limiting ring groove (801) is greater than the sum of the thicknesses of the semicircular adhesive layer (802) and the semicircular wooden clinging blocks (803); The lengths of the upper arc-shaped fitting block (805) and the lower arc-shaped fitting block (806) are the same as the length of the limiting ring groove (801).

5. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 2, characterized in that: The two spliced ​​arc-shaped wooden strips (808) correspond to the middle parts of the two semicircular wooden cling blocks (803), the hexagonal locking studs (809) and the locking screw holes (804) are positioned corresponding to each other, and the ends of the hexagonal locking studs (809) are inserted into the interior of the locking screw holes (804); The upper arc-shaped fitting block (805), the lower arc-shaped fitting block (806), the four elastic expansion strips (807) and the two spliced ​​arc-shaped wooden strips (808) are spliced ​​and surrounded on the surfaces of the two semicircular wooden clinging blocks (803).

6. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 3, characterized in that: The length and width of the square limiting hole (817) and the square magnetic block (823) are the same, and the square magnetic block (823) is embedded in the interior of the square limiting hole (817).

7. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 3, characterized in that: An auxiliary installation protection mechanism (9) is provided on the inner side of the inner rubber protective layer (4); The auxiliary installation protection mechanism (9) includes a central positioning shaft (901); A central positioning shaft (901) is installed at a central position inside the inner rubber protective layer (4), and an arc-shaped positioning groove (902) is opened at equal intervals on the surface of the central positioning shaft (901) along the circumferential direction, and an outer limiting card groove (903) is opened at equal intervals on the surface of the central positioning shaft (901) at a position on one side of the arc-shaped positioning groove (902), and an inner limiting card groove (904) is opened inside the outer limiting card groove (903), and a T-shaped limiting strip (905) is installed at equal intervals on the surface of the central positioning shaft (901) along the circumferential direction, and arc-shaped splicing sealing strips (906) are symmetrically fixedly connected to the two sides of the T-shaped limiting strip (905), and a gourd-shaped limiting rubber soft block (907) is fixedly connected to the middle of the T-shaped limiting strip (905) at equal intervals; The inner wall of the inner rubber protective layer (4) is fitted with a shaping wrapping layer (908), and the interior of the shaping wrapping layer (908) is embedded with arc-shaped elastic protective silicone strips (909) at equal intervals along the circumferential direction. The interior of the shaping wrapping layer (908) is installed with a metal pressure-resistant strip (910) at a position on one side of the arc-shaped elastic protective silicone strip (909), and the interior of the shaping wrapping layer (908) is embedded with a metal connecting arc piece (911) at a position corresponding to the arc-shaped elastic protective silicone strip (909). The inner side of the T-shaped limiting strip (905) is filled with a sealing filler (912).

8. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 7, characterized in that: The three core bodies (1) are equidistantly arranged around the outside of the central positioning shaft (901), and the three core bodies (1) correspond to the three arc-shaped positioning grooves (902) respectively. The shape of the outer limit slot (903) and the inner limit slot (904) after being connected is the same as the shape of the gourd-shaped limit rubber block (907), and the gourd-shaped limit rubber block (907) is movably embedded in the inner part of the outer limit slot (903) and the inner limit slot (904).

9. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 7, characterized in that: Adjacent arc-shaped splicing sealing strips (906) are fitted together, and the inner wall of the arc-shaped splicing sealing strip (906) is fitted to the surface of the shielding layer (3).

10. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 7, characterized in that: The arc-shaped elastic protective silicone strip (909) is located outside the T-shaped limit strip (905), and the metal pressure-resistant strip (910) and the core (1) are positioned correspondingly. The metal connecting arc piece (911) is attached to the surface of the arc-shaped elastic protective silicone strip (909), the number of the arc-shaped elastic protective silicone strip (909), the metal connecting arc piece (911) and the metal pressure-resistant strip (910) are all three, and both ends of the metal connecting arc piece (911) are connected to the edges of two adjacent metal pressure-resistant strips (910).

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