Environment-friendly cable and preparation process thereof

Abstract

The invention discloses an environment-friendly cable and a preparation process thereof, and relates to the technical field of cable manufacturing, the environment-friendly cable comprises a barrier strip, the inner side surface of the barrier strip is fixedly connected with a polyethylene pipe, the inner side surface of the polyethylene pipe is fixedly connected with a spiral sheet, and the inner side surface of the spiral sheet is fixedly connected with a wire core. The fixed connection mechanism is used for leading-in and leading-out of cooling gas between the wire core and the polyethylene pipe and insulation protection of the surface of the wire core. According to the environment-friendly cable and the preparation process thereof, the fixed connection mechanism conveys cooling gas into each polyethylene pipe at the same time, the cooling gas flows along the spiral sheet so as to rapidly take away heat on the surface of the cable core, the gas directionality is higher through the gas flow channel of the spiral structure, and therefore the efficiency of taking away the heat carried by gas flowing is higher, and the service life of the cable is prolonged. The flame-retardant mechanism blocks the outer side surface of the polyethylene pipe, so that the cable is not liable to be on fire and is easy to be subjected to flame retardance during fire.

Description

Technical Field

[0001] The invention relates to the technical field of cable manufacturing, in particular to an environmentally friendly cable and a preparation process thereof. Background Art

[0002] Fireproof cable is a general term for wires and cables with fireproof properties. It refers to a type of wire and cable that has the characteristics of directly or indirectly reducing fire losses under fire conditions. It is usually divided into two categories: flame-retardant wires and cables and fire-resistant wires and cables. Flame-retardant cables have the characteristics of preventing or delaying the occurrence or spread of flames when they burn under specified test conditions after the fire source is removed. However, existing cables are prone to produce a large amount of smoke and harmful gases in the process of preventing the spread of flames, polluting the surrounding environment. At the same time, they cannot quickly dissipate heat during use, affecting the effect of use. The Chinese patent announcement number is: CN113707383B discloses "A halogen-free, low-smoke, flame-retardant, environmentally friendly fireproof cable". In this patent, a fire-retardant layer is arranged on the outside of the positioning layer. When used, the cable can be bent at the adjacent fireproof monomers, and the cable can be rolled up for easy transportation. When there is no fire, the heat of the cable core can be dissipated to the outside through the gaps between adjacent arc-shaped fireproof sheets. When a fire occurs, the temperature of the external cable rises. At this time, the heat expansion rod expands when heated, causing multiple arc-shaped fireproof sheets to move synchronously toward the cable core and squeeze the belt body until the adjacent ends of the multiple arc-shaped fireproof sheets contact each other, forming an annular fireproof barrier to prevent the fire from spreading to the cable core of the cable.

[0003] The existing environmentally friendly cables and their preparation processes have structural design defects. In the process of preventing the spread of flames, the existing cables are prone to produce a large amount of smoke and harmful gases that pollute the surrounding environment, and how to prevent the cables from burning due to excessive temperatures during use. Summary of the invention

[0004] The present invention provides an environmentally friendly cable and a preparation process thereof, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an environmentally friendly cable, comprising a barrier strip, the inner side of the barrier strip is fixedly connected to a polyethylene tube, the inner side of the polyethylene tube is fixedly connected to a spiral sheet, the inner side of the spiral sheet is fixedly connected to a wire core, and further comprising: A fixing mechanism, which is fixedly installed on the surface of the wire core near the end surface, and is used for the introduction and export of cooling gas between the wire core and the polyethylene tube and the insulation protection of the wire core surface; A flame retardant mechanism, the flame retardant mechanism is fixedly mounted on the outer surface of the polyethylene pipe, the flame retardant mechanism is used to support and limit the polyethylene pipe and block the fire on the outer surface of the polyethylene pipe, a plastic-coated steel wire is slidably connected between the fixing mechanism and the flame retardant mechanism, and a fixture is fixedly connected to the end surface of the plastic-coated steel wire; A protection component, which is fixedly installed between the fixing mechanism and the flame retardant mechanism, and is used for sealing and protecting the outer surface of the polyethylene pipe; The fixing mechanism comprises a stepped cylinder, the inner side surface of the stepped cylinder is fixedly connected to a connecting cylinder, the inner side surface of the connecting cylinder is fixedly connected to a connecting plate, the inner side surface of the connecting plate is fixedly connected to an internally threaded tube, and the side of the stepped cylinder away from the connecting cylinder is fixedly connected to a compression ring.

[0006] Preferably, the fixing mechanism also includes a sphere, which is rotatably mounted on the outer surface of the step cylinder, a blind pipe is fixedly connected to the middle position of the surface of the connecting plate, a diversion pipe is fixedly connected to the surface of the blind pipe, the flow guiding mechanism includes a wire core, a spiral sheet and a polyethylene tube, the support of the spiral sheet forms a spiral structure airflow channel between the wire core and the polyethylene tube, the barrier strip is connected to the position between the two fixing mechanisms, the protective component is connected to the position between the flame retardant mechanism and the fixing mechanism, the barrier strip blocks and centers multiple polyethylene tubes, the inner side of the flame retardant mechanism is in close contact with the outer surface of the polyethylene tube, and the interior of the fixing mechanism is connected to the interior of the airflow channel.

[0007] Preferably, one end of the shunt pipe away from the blind pipe is fixedly connected to a position on the surface of the polyethylene pipe close to the end face, and a first limit block is fixedly connected to one side of the surface of the stepped cylinder close to the sphere.

[0008] Preferably, the flame retardant mechanism includes a shell, the inner side surface of the shell is provided with a circular hole, the inner side surface of the shell is fixedly connected to the outer surface of the polyethylene tube, the inner side surface of the shell is provided with a guide hole near the polyethylene tube, the wire core and the polyethylene tube extend to the inner side surface of the internal threaded tube, the connecting tube supports the polyethylene tube, the shunt pipe is connected to the surface of the polyethylene tube, and the axial direction of the shunt pipe is inclined close to the polyethylene tube, the cooling gas is transported to the shunt pipe through a blind pipe, and the shunt pipe transports the cooling gas to the interior of the polyethylene tube, and the inclined airflow makes the air resistance smaller when the cooling gas flows along the spiral sheet.

[0009] Preferably, the flame retardant mechanism further comprises a second limit block, the second limit block is fixedly mounted on the surface of the shell body at a position close to the edge, and a positioning half shell is fixedly connected to the inner side surface of the shell body.

[0010] Preferably, there are two positioning half shells, and the inner side surface of the positioning half shell is fixedly connected with an arc plate, the surface of the arc plate is fixedly connected with a carbon dioxide bottle, the top of the carbon dioxide bottle extends to the outer surface of the positioning half shell, the polyethylene tube is embedded in the position of the circular hole, the shell blocks the entire protective component and the silicone filled inside, when the cable catches fire, the fire spreads along the silicone layer and the protective component to the shell, and the surface of the shell extends to the outside of the protective component, which can effectively reduce the spread of the fire, the top and bottom of the carbon dioxide bottle are both set to a sealing structure, but the material thickness of the top and bottom of the carbon dioxide bottle is relatively small during production.

[0011] Preferably, a film ring is fixedly connected to the inner side surface of the shell near the middle, the bottom of the carbon dioxide bottle is close to the film ring, and a protective arc plate is fixedly connected to the outer surface of the shell.

[0012] Preferably, the protection assembly comprises a fixing ring, the fixing ring is fixedly mounted on the side of the shell, a plug is fixedly connected to the surface of the fixing ring, and one end of the plug away from the fixing ring passes through the interior of the shell.

[0013] Preferably, the end of the pin away from the fixing ring is fixedly connected with a connecting ring, the surface of the fixing ring is respectively fixedly connected with a heat shrink tube and an outer sheath, the position between the heat shrink tube and the outer sheath is fixedly connected with a spiral steel wire, the fixing ring is fitted to one side of the shell, the pin passes through the fixing ring and the shell to the connecting ring, and the fixing ring and the connecting ring are fixedly installed on the surface of the shell by welding. Similarly, the fixing platform is fixedly installed at a position close to the edge of the inner side of the step cylinder, the inner side of the heat shrink tube is in close contact with the outer surface of the barrier strip, the glue injection holes on the surface of the heat shrink tube and the outer sheath are staggered with each other, and the hardness of the silicone cooling and molding material at the glue injection holes is relatively low.

[0014] Preferably, the surfaces of the heat shrink tube and the outer sheath are provided with glue injection holes, the end of the outer sheath away from the fixing ring is fixedly connected to a fixing platform, the fixing platform is fixedly connected to the inner side of the step cylinder, and second limit blocks are provided on both sides of the shell near the edge, and there are multiple second limit blocks. Correspondingly, multiple first limit blocks are also provided on the surface of the step cylinder near the edge, the plastic-coated steel wire passes through the second limit blocks and the first limit blocks arranged oppositely in turn, and after the plastic-coated steel wire completes multiple penetrations, both ends of the plastic-coated steel wire are inserted into the interior of the extension hole.

[0015] Preferably, the fixator comprises a C-shaped frame, an inner side surface of the C-shaped frame is provided with an extension hole, the C-shaped frame is fixedly connected to the end surface of the plastic-coated steel wire near the extension hole, and a connecting rod is fixedly connected to the inner side surface of the C-shaped frame.

[0016] A process for preparing an environmentally friendly cable comprises the following steps: Step 1, conductor structure manufacturing, at room temperature, draw the copper rod into copper wire, heat and keep the copper wire, and then naturally cool the copper wire, twist the copper wire by twisting multiple single wires to form a copper stranded wire, use a traction machine to pull the copper stranded wire to be coated with cross-linked polyethylene inside the injection molding extruder, and complete the preparation of the wire core, and similarly complete the preparation of six wire cores; Step 2: Install the cooling structure. Put the plastic and rubber particles into the injection molding extruder. The hot melt plastic is formed into a barrier strip through a die. The outer surface of the wire core prepared in step 1 is sheathed with a spiral sheet. The polyethylene tube is sheathed on the outside of the spiral sheet. The inner side of the polyethylene tube is made close to the outer surface of the spiral sheet by heating. The assembled whole structure is placed on the inner side of the barrier strip for preliminary gluing and positioning. Step 3: Install the flame retardant structure. Slide the shell to the determined position on the outer surface of the polyethylene tube, with the guide hole facing the polyethylene tube. Spot weld the second limit block on the shell surface near the edge in sequence. Wrap the film ring around the inner side of the shell near the circular hole. Fix the arc plate on the inner side of the positioning half shell. Then, dock and fix the two positioning half shells on the inner side of the shell. Multiple carbon dioxide bottles are supported and limited. Step 4, support structure installation, the connecting tube is sleeved on the end face position of the overall structure in step 2, the connecting plate slides into the inner side of the connecting tube, a hole is opened on the surface of the polyethylene tube near the end face, the end face of the wire core extends to the inside of the internal threaded tube, the diverter tube is glued and sealed with the opening position on the surface of the polyethylene tube, and then the stepped tube is welded as a whole and installed on the surface of the connecting plate, and multiple first limit blocks are spot welded in sequence on the end face position of the stepped tube.

[0017] The present invention provides an environmentally friendly cable and a preparation process thereof, which has the following beneficial effects: 1. The environmentally friendly cable and its preparation process, the fixing mechanism simultaneously delivers the cooling gas to the inside of each polyethylene tube, the cooling gas flows along the spiral sheet to quickly remove the heat on the surface of the core, the air flow channel of the spiral structure makes the gas more directional, so that the gas flow carries the heat away more efficiently, and the flame retardant mechanism blocks the outer side of the polyethylene tube, so that the cable is not easy to catch fire and is easy to be flame retardant when it catches fire.

[0018] 2. For the environment-friendly cable and its preparation process, when the gas flows from one end of the polyethylene tube to the other end, the airflow is more efficient in cooling the wire core. The internal threaded tube is connected to the external wiring terminal, so that the wire core is connected to the external wiring device. During installation, the pressure ring fits tightly against the edge of the connecting plate surface. When silicone is poured into the outside of the polyethylene tube, the flowing silicone fills the space between the connecting tube and the connecting plate. The silicone is not easy to overflow through the edge of the connecting plate, which solves the problem of how to prevent the cable from burning due to excessive temperature during use.

[0019] 3. The environmentally friendly cable and its preparation process, when the fire extends to the shell, the top and bottom of the carbon dioxide bottle are opened by the gas, and the mixed fluid of carbon dioxide gas and liquid is ejected, and the outside of the shell is sprayed with the mixed fluid to block the fire. At the same time, the mixed fluid breaks through the film ring and passes through the guide hole to the surface of the polyethylene tube, so that the inside and outside of the cable are effectively flame retardant, which solves the problem that the existing cables are prone to generate a large amount of smoke and harmful gases to pollute the surrounding environment in the process of preventing the spread of flames.

[0020] 4. The environment-friendly cable and its preparation process have mutually offset injection holes which can effectively prevent the cable from being damaged at that location. When liquid silicone is poured into the interior of the outer sheath, the silicone flows through the heat shrink tube to the position between the barrier strip and the polyethylene tube. Multiple polyethylene tubes are limited on the inner side of the barrier strip, and the liquid silicone fills the gap between the heat shrink tube and the outer sheath, so that the spiral steel wire can be positioned, thereby increasing the overall rigidity and bending resistance of the cable.

[0021] 5. The environmentally friendly cable and its preparation process, the connecting rod passes through the C-frame and the end face of the plastic-coated steel wire in turn, and then the connecting rod is fixedly installed on the surface of the C-frame to complete the installation of the plastic-coated steel wire. When the cable as a whole is in a dragging state, the ball rolls on the surface of the stepped cylinder, so that the overall dragging friction of the cable is effectively reduced. When the cable is bent, the plastic-coated steel wire slides on the inner side of the first limit block and the second limit block to avoid the plastic-coated steel wire from being broken. At the same time, it can effectively enhance the overall bending resistance and bending ability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a flow chart of the process for preparing the environmentally friendly cable of the present invention; Figure 2 A three-dimensional diagram of the entire environmentally friendly cable of the present invention; Figure 3 A three-dimensional diagram of the interior of the environmentally friendly cable of the present invention; Figure 4 It is a structural schematic diagram of the flow guiding mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of a part of the fixing mechanism of the present invention; Figure 6 It is a schematic diagram of the overall structure of the fixing mechanism of the present invention; Figure 7 It is a schematic diagram of the overall structure of the flame retardant mechanism of the present invention; Figure 8 It is a schematic diagram of the structure inside the flame retardant mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the protection component of the present invention; Fig.10 It is a schematic structural diagram of the fixer of the present invention.

[0023] In the figure: 1. barrier strip; 2. flow guide mechanism; 21. wire core; 22. spiral sheet; 23. polyethylene tube; 3. fixing mechanism; 31. stepped tube; 32. sphere; 33. pressure covering ring; 34. first limit block; 35. connecting tube; 36. connecting plate; 37. internal threaded tube; 38. blind tube; 39. shunt tube; 4. flame retardant mechanism; 41. shell; 42. round hole; 43. flow guide hole; 44. second limit block; 45. positioning half shell; 46. arc plate; 47. carbon dioxide bottle; 48. film ring; 49. protective arc plate; 5. protective assembly; 51. fixing ring; 52. fixing platform; 53. heat shrink tube; 54. spiral steel wire; 55. outer sheath; 56. latch; 57. connecting ring; 6. plastic coated steel wire; 7. fastener; 71. C-shaped frame; 72. extension hole; 73. connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] First embodiment: Figure 1-Figure 3 As shown, the present invention provides a technical solution: an environmentally friendly cable, comprising a barrier strip 1, a polyethylene tube 23 is fixedly connected to the inner side of the barrier strip 1, a spiral sheet 22 is fixedly connected to the inner side of the polyethylene tube 23, a core 21 is fixedly connected to the inner side of the spiral sheet 22, and further comprising: The fixing mechanism 3 is fixedly installed on the surface of the wire core 21 near the end surface. The fixing mechanism 3 is used for the introduction and export of cooling gas between the wire core 21 and the polyethylene tube 23 and the insulation protection of the surface of the wire core 21; The flame retardant mechanism 4 is fixedly mounted on the outer surface of the polyethylene tube 23. The flame retardant mechanism 4 is used to support and limit the polyethylene tube 23 and to block the fire on the outer surface of the polyethylene tube 23. A plastic-coated steel wire 6 is slidably connected between the fixing mechanism 3 and the flame retardant mechanism 4. A fixture 7 is fixedly connected to the end surface of the plastic-coated steel wire 6. The protection component 5 is fixedly installed at a position between the fixing mechanism 3 and the flame retardant mechanism 4 , and is used for sealing and protecting the outer surface of the polyethylene tube 23 .

[0026] When in use, the guide mechanism 2 includes a wire core 21, a spiral sheet 22 and a polyethylene tube 23. The support of the spiral sheet 22 forms a spiral structured airflow channel between the wire core 21 and the polyethylene tube 23. The barrier strip 1 is connected between the two fixing mechanisms 3. The protective component 5 is connected between the flame retardant mechanism 4 and the fixing mechanism 3. The barrier strip 1 blocks and centers the multiple polyethylene tubes 23. The inner side surface of the flame retardant mechanism 4 is in close contact with the outer surface of the polyethylene tube 23. The interior of the fixing mechanism 3 is connected to the interior of the airflow channel. The fixing mechanism 3 simultaneously transports the cooling gas to the interior of each polyethylene tube 23. The cooling gas flows along the spiral sheet 22 to quickly remove the heat from the surface of the wire core 21. The spiral structured airflow channel makes the gas more directional, thereby making the gas flow more efficient in carrying away heat. The flame retardant mechanism 4 blocks the outer side surface of the polyethylene tube 23, making it less likely to catch fire and easier to be flame retardant when it catches fire.

[0027] Second embodiment: Figure 3-Figure 6 As shown, the fixing mechanism 3 includes a stepped cylinder 31, the inner side of the stepped cylinder 31 is fixedly connected to a connecting cylinder 35, the inner side of the connecting cylinder 35 is fixedly connected to a connecting plate 36, the inner side of the connecting plate 36 is fixedly connected to an internal threaded tube 37, and the side of the stepped cylinder 31 away from the connecting cylinder 35 is fixedly connected to a compression ring 33; The fixing mechanism 3 also includes a ball 32, which is rotatably mounted on the outer surface of the stepped cylinder 31, a blind pipe 38 is fixedly connected to the middle of the surface of the connecting plate 36, and a shunt pipe 39 is fixedly connected to the surface of the blind pipe 38; One end of the shunt pipe 39 away from the blind pipe 38 is fixedly connected to the surface of the polyethylene pipe 23 near the end surface, and a first limit block 34 is fixedly connected to one side of the surface of the stepped cylinder 31 near the sphere 32 .

[0028] When in use, the wire core 21 and the polyethylene tube 23 extend to the inner side of the internal threaded tube 37, the connecting tube 35 supports the polyethylene tube 23, the shunt tube 39 is connected to the surface of the polyethylene tube 23, and the axial direction of the shunt tube 39 is inclined close to the polyethylene tube 23, the cooling gas is transported to the shunt tube 39 through the blind tube 38, and the shunt tube 39 transports the cooling gas to the inside of the polyethylene tube 23. The inclined airflow makes the air resistance smaller when the cooling gas flows along the spiral sheet 22. When the gas flows from one end of the polyethylene tube 23 to the other end, the airflow is more efficient in cooling the wire core 21. The internal threaded tube 37 is connected to the external wiring terminal, so that the wire core 21 is connected to the external wiring device. During installation, the pressure ring 33 is tightly fitted with the edge position of the surface of the connecting plate 36. When silicone is poured into the outside of the polyethylene tube 23, the flowing silicone fills the space between the connecting tube 35 and the connecting plate 36. The silicone is not easy to overflow through the edge of the connecting plate 36, which solves the problem of how to prevent the cable from burning due to excessive temperature during use.

[0029] The third embodiment: Figure 7 , Figure 8 As shown, the flame retardant mechanism 4 includes a shell 41, a circular hole 42 is opened on the inner side of the shell 41, the inner side of the shell 41 is fixedly connected to the outer surface of the polyethylene tube 23, a guide hole 43 is opened on the inner side of the shell 41 near the polyethylene tube 23, and the flame retardant mechanism 4 also includes a second limit block 44, which is fixedly installed on the surface of the shell 41 near the edge, and a positioning half shell 45 is fixedly connected to the inner side of the shell 41; There are two positioning half shells 45, and the inner side surface of the positioning half shell 45 is fixedly connected with an arc plate 46, the surface of the arc plate 46 is fixedly connected with a carbon dioxide bottle 47, and the top of the carbon dioxide bottle 47 extends to the outer surface of the positioning half shell 45; a film ring 48 is fixedly connected to the inner side surface of the shell 41 near the middle, the bottom of the carbon dioxide bottle 47 is close to the film ring 48, and the outer surface of the shell 41 is fixedly connected with a protective arc plate 49.

[0030] When in use, the polyethylene tube 23 is embedded in the position of the circular hole 42, and the shell 41 blocks the entire protective component 5 and the silicone filled inside. When the cable catches fire, the fire spreads along the silicone layer and the protective component 5 to the shell 41, and the surface of the shell 41 extends to the outside of the protective component 5, which can effectively reduce the spread of the fire. The top and bottom of the carbon dioxide bottle 47 are both set to a sealing structure, but the material thickness of the top and bottom of the carbon dioxide bottle 47 is relatively small during production. When the fire extends to the shell 41, the top and bottom of the carbon dioxide bottle 47 are opened by the gas, and the mixed fluid of carbon dioxide gas and liquid is impacted and ejected. The outside of the shell 41 is sprayed with the mixed fluid to block the fire. At the same time, the mixed fluid breaks through the film ring 48 and passes through the guide hole 43 to the surface of the polyethylene tube 23, so that the inside and outside of the cable are effectively flame retardant, which solves the problem that the existing cables are prone to generate a large amount of smoke and harmful gases to pollute the surrounding environment in the process of preventing the spread of flames.

[0031] Fourth embodiment: Fig. 9 As shown, the protective component 5 includes a fixing ring 51, which is fixedly installed on the side of the shell 41, and a pin 56 is fixedly connected to the surface of the fixing ring 51. The end of the pin 56 away from the fixing ring 51 passes through the interior of the shell 41, and the end of the pin 56 away from the fixing ring 51 is fixedly connected to a connecting ring 57, and the surface of the fixing ring 51 is respectively fixedly connected with a heat shrink tube 53 and an outer sheath 55, and a spiral steel wire 54 is fixedly connected at a position between the heat shrink tube 53 and the outer sheath 55. Glue injection holes are provided on the surfaces of the heat shrink tube 53 and the outer sheath 55, and the end of the outer sheath 55 away from the fixing ring 51 is fixedly connected to a fixing platform 52, and the fixing platform 52 is fixedly connected to the inner side surface of the step cylinder 31.

[0032] When in use, the fixing ring 51 is attached to one side of the shell 41, and the pin 56 passes through the fixing ring 51 and the shell 41 to the connecting ring 57. The fixing ring 51 and the connecting ring 57 are fixedly installed on the surface of the shell 41 by welding. Similarly, the fixing platform 52 is fixedly installed at a position close to the edge of the inner side of the stepped cylinder 31, and the inner side of the heat shrinkable tube 53 is in close contact with the outer surface of the barrier strip 1. The injection holes on the surfaces of the heat shrinkable tube 53 and the outer sheath 55 are staggered with each other. The hardness of the silicone cooling and shaping material at the injection holes is relatively low. The staggered injection holes can effectively prevent the cable from being damaged at this location. When liquid silicone is poured into the interior of the outer sheath 55, the silicone flows through the heat shrinkable tube 53 to the position between the barrier strip 1 and the polyethylene tube 23. Multiple polyethylene tubes 23 are limited on the inner side of the barrier strip 1, and the liquid silicone fills the gap between the heat shrinkable tube 53 and the outer sheath 55, so that the spiral steel wire 54 can be positioned, thereby increasing the overall rigidity and bending resistance of the cable.

[0033] Fifth embodiment: Figure 6 , Figure 7 , Fig.10 As shown, the ball 32 is rotatably mounted on the outer surface of the stepped cylinder 31, a blind pipe 38 is fixedly connected to the middle of the surface of the connecting plate 36, and a shunt pipe 39 is fixedly connected to the surface of the blind pipe 38; One end of the shunt pipe 39 away from the blind pipe 38 is fixedly connected to the surface of the polyethylene pipe 23 near the end surface, and the first limit block 34 is fixedly connected to the side of the stepped cylinder 31 near the sphere 32; The second limit block 44 is fixedly installed on the surface of the shell 41 near the edge, and the inner side of the shell 41 is fixedly connected with a positioning half shell 45; The fixer 7 includes a C-shaped frame 71 , an inner side surface of which is provided with an extension hole 72 , the C-shaped frame 71 is fixedly connected to the end surface of the plastic-coated steel wire 6 near the extension hole 72 , and a connecting rod 73 is fixedly connected to the inner side surface of the C-shaped frame 71 .

[0034] When in use, second limit blocks 44 are provided near the edges on both sides of the shell 41, and the number of second limit blocks 44 is multiple. Correspondingly, multiple first limit blocks 34 are also provided near the edges on the surface of the stepped cylinder 31. The plastic-coated steel wire 6 passes through the second limit blocks 44 and the first limit blocks 34 arranged oppositely in sequence. After the plastic-coated steel wire 6 completes multiple penetrations, both ends of the plastic-coated steel wire 6 are inserted into the interior of the extension hole 72, and the connecting rod 73 passes through the C-shaped frame 71 and the end face position of the plastic-coated steel wire 6 in sequence, and then the connecting rod 73 is fixedly installed on the surface of the C-shaped frame 71, thereby completing the installation of the plastic-coated steel wire 6. When the cable as a whole is in a dragging state, the ball 32 rolls on the surface of the stepped cylinder 31, so that the overall dragging friction of the cable is effectively reduced. When the cable is bent, the plastic-coated steel wire 6 slides on the inner side of the first limit block 34 and the second limit block 44 to prevent the plastic-coated steel wire 6 from being broken. At the same time, the overall bending resistance and bending ability of the cable can be effectively enhanced.

[0035] Sixth embodiment: Figure 1-Figure 10 As shown: A process for preparing an environmentally friendly cable comprises the following steps: Step 1, conductor structure manufacturing, at room temperature, draw the copper rod into copper wire, heat and keep the copper wire, and then naturally cool the copper wire, twist the copper wire by twisting multiple single wires to form a copper stranded wire, use a traction machine to pull the copper stranded wire to be coated with cross-linked polyethylene inside the injection molding extruder, and complete the preparation of the wire core 21, and similarly complete the preparation of six wire cores 21; Step 2: Install the cooling structure. Put plastic and rubber particles into the injection molding extruder. The hot melt plastic is formed into a barrier strip 1 through a die. The outer surface of the wire core 21 prepared in step 1 is sheathed with a spiral sheet 22. The polyethylene tube 23 is sheathed on the outside of the spiral sheet 22. The inner side of the polyethylene tube 23 is made to be in close contact with the outer surface of the spiral sheet 22 by heating. The assembled whole structure is placed on the inner side of the barrier strip 1 for preliminary gluing and positioning. Step 3: Install the flame retardant structure. Slide the shell 41 to a determined position on the outer surface of the polyethylene tube 23. The guide hole 43 is opposite to the polyethylene tube 23. The second limit block 44 is spot welded in sequence on the surface of the shell 41 near the edge. The film ring 48 is wrapped around the inner side of the shell 41 near the circular hole 42. The arc plate 46 is fixedly installed on the inner side of the positioning half shell 45. Then, the two positioning half shells 45 are fixedly installed on the inner side of the shell 41 by docking. Multiple carbon dioxide bottles 47 are supported and limited; Step 4, support structure installation, the connecting tube 35 is sleeved on the end face position of the overall structure in step 2, the connecting plate 36 slides into the inner side of the connecting tube 35, a hole is opened on the surface of the polyethylene tube 23 near the end face, the end face of the wire core 21 extends to the inside of the internal threaded tube 37, the diverter tube 39 is glued and sealed to the opening position on the surface of the polyethylene tube 23, and then the stepped tube 31 is welded as a whole and installed on the surface of the connecting plate 36, and multiple first limit blocks 34 are spot welded in sequence on the end face position of the stepped tube 31.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. An environmentally friendly cable, comprising a barrier strip (1), characterized in that: The inner side surface of the barrier strip (1) is fixedly connected to a polyethylene tube (23), the inner side surface of the polyethylene tube (23) is fixedly connected to a spiral sheet (22), and the inner side surface of the spiral sheet (22) is fixedly connected to a wire core (21), and further comprises: A fixing mechanism (3), the fixing mechanism (3) being fixedly mounted on a surface of the wire core (21) at a position close to an end surface, the fixing mechanism (3) being used for introducing and removing cooling gas between the wire core (21) and the polyethylene tube (23) and for insulating the surface of the wire core (21); A flame retardant mechanism (4), the flame retardant mechanism (4) being fixedly mounted on the outer surface of the polyethylene tube (23), the flame retardant mechanism (4) being used to support and limit the polyethylene tube (23) and to block the fire on the outer surface of the polyethylene tube (23), a plastic-coated steel wire (6) being slidably connected between the fixing mechanism (3) and the flame retardant mechanism (4), and a fixture (7) being fixedly connected to the end surface of the plastic-coated steel wire (6); A protection component (5), the protection component (5) being fixedly mounted between the fixing mechanism (3) and the flame retardant mechanism (4), the protection component (5) being used for sealing and protecting the outer surface of the polyethylene tube (23); The fixing mechanism (3) comprises a stepped cylinder (31), the inner side surface of the stepped cylinder (31) is fixedly connected to a connecting cylinder (35), the inner side surface of the connecting cylinder (35) is fixedly connected to a connecting plate (36), the inner side surface of the connecting plate (36) is fixedly connected to an internally threaded tube (37), and a side of the stepped cylinder (31) away from the connecting cylinder (35) is fixedly connected to a compression ring (33).

2. An environmentally friendly cable according to claim 1, characterized in that: The fixing mechanism (3) further comprises a sphere (32) which is rotatably mounted on the outer surface of the stepped cylinder (31); a blind tube (38) is fixedly connected to the middle of the surface of the connecting plate (36); and a shunt tube (39) is fixedly connected to the surface of the blind tube (38).

3. An environmentally friendly cable according to claim 2, characterized in that: One end of the flow diverter pipe (39) away from the blind pipe (38) is fixedly connected to a position on the surface of the polyethylene pipe (23) close to the end surface, and a first limit block (34) is fixedly connected to one side of the surface of the stepped cylinder (31) close to the sphere (32).

4. An environmentally friendly cable according to claim 3, characterized in that: The flame retardant mechanism (4) comprises a shell (41), a circular hole (42) is provided on the inner side surface of the shell (41), the inner side surface of the shell (41) is fixedly connected to the outer surface of the polyethylene tube (23), and a flow guide hole (43) is provided on the inner side surface of the shell (41) near the polyethylene tube (23).

5. An environmentally friendly cable according to claim 4, characterized in that: The flame retardant mechanism (4) further comprises a second limit block (44), the second limit block (44) being fixedly mounted on a surface of the shell (41) at a position close to an edge, and a positioning half shell (45) is fixedly connected to the inner side surface of the shell (41).

6. An environmentally friendly cable according to claim 5, characterized in that: There are two positioning half shells (45), and the inner side surface of the positioning half shell (45) is fixedly connected to an arc plate (46), the surface of the arc plate (46) is fixedly connected to a carbon dioxide bottle (47), and the top of the carbon dioxide bottle (47) extends to the outer surface of the positioning half shell (45).

7. An environmentally friendly cable according to claim 6, characterized in that: A film ring (48) is fixedly connected to a position near the middle of the inner side surface of the shell (41), the bottom of the carbon dioxide bottle (47) is close to the film ring (48), and a protective arc plate (49) is fixedly connected to the outer surface of the shell (41).

8. The environmentally friendly cable according to claim 7, characterized in that: The protection assembly (5) comprises a fixing ring (51), the fixing ring (51) being fixedly mounted on a side surface of the housing (41), a plug (56) being fixedly connected to a surface of the fixing ring (51), and an end of the plug (56) away from the fixing ring (51) passing through the interior of the housing (41).

9. An environmentally friendly cable according to claim 8, characterized in that: One end of the latch pin (56) away from the fixing ring (51) is fixedly connected to a connecting ring (57); a heat shrink tube (53) and an outer sheath (55) are respectively fixedly connected to the surface of the fixing ring (51); and a spiral steel wire (54) is fixedly connected between the heat shrink tube (53) and the outer sheath (55).

10. A process for preparing an environmentally friendly cable, characterized in that: The following steps are involved: Step 1, manufacturing the conductor structure, at room temperature, drawing the copper rod into copper wire, heating and keeping the copper wire warm, and then naturally cooling the copper wire, twisting the copper wire by twisting multiple single wires to form a copper stranded wire, using a traction machine to pull the copper stranded wire to be coated inside an injection molding extruder to be coated with cross-linked polyethylene, completing the preparation of the wire core (21), and similarly completing the preparation of six wire cores (21); Step 2: installing the cooling structure, putting plastic and rubber particles into an injection molding extruder, and forming the hot melt plastic into a barrier strip (1) through a die, sleeve the outer surface of the wire core (21) prepared in step 1 with a spiral sheet (22), sleeve the polyethylene tube (23) on the outside of the spiral sheet (22), and heat the polyethylene tube (23) so that the inner side of the polyethylene tube (23) is in close contact with the outer surface of the spiral sheet (22), and the assembled whole structure is placed on the inner side of the barrier strip (1) for preliminary gluing and positioning; Step 3, installing the flame retardant structure, sliding the shell (41) to a determined position on the outer surface of the polyethylene tube (23), with the guide hole (43) facing the polyethylene tube (23), spot welding the second limit blocks (44) in sequence on the surface of the shell (41) near the edge, wrapping the film ring (48) around the inner side surface of the shell (41) near the circular hole (42), fixing the arc plate (46) on the inner side surface of the positioning half shell (45), and then butting and fixing the two positioning half shells (45) on the inner side surface of the shell (41), and supporting and limiting the position of the plurality of carbon dioxide bottles (47); Step 4: Install the support structure. The connecting tube (35) is sleeved on the end face of the overall structure in step 2. The connecting plate (36) is slid into the inner side of the connecting tube (35). A hole is opened on the surface of the polyethylene tube (23) near the end face. The end face of the wire core (21) extends to the inside of the internal threaded tube (37). The shunt tube (39) is glued and sealed to the opening on the surface of the polyethylene tube (23). The stepped tube (31) is then welded as a whole to the surface of the connecting plate (36). A plurality of first limit blocks (34) are spot welded in sequence to the end face of the stepped tube (31).

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