Double-layer fire hose processing technology

Abstract

The invention is applicable to the technical field of fire hose processing, and provides a double-layer fire hose processing technology which comprises the following steps: S1, weaving an outer protective sleeve of a fire hose through a weaving machine, wrapping the outer surface of the outer protective sleeve with a fiber layer, S2, forming a hollow pipe and a plastic lining pipe by using an extruding machine, the method comprises the following steps of S1, arranging a plastic lining pipe on the inner wall of a fire hose, and coating the outer wall of the plastic lining pipe with a cementing layer, S2, sequentially penetrating the plastic lining pipe and a hollow pipe into an outer-layer protective sleeve through a belt penetrating device, and trimming the fire hose subjected to pipe penetrating, and S4, introducing steam into the fire hose for heat sealing, introducing cooling gas to cool the fire hose, and winding the fire hose by using a winding device. Wherein tape threading is carried out through the tape threading device, a tensioning mechanism is installed in the device, the tensioning mechanism is used for opening the outer-layer protective sleeve and blowing air, creases and folds in the outer-layer protective sleeve are reduced, a plastic lining pipe can conveniently enter the outer-layer protective sleeve, and a rubber layer is prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of fire hose processing, and in particular relates to a double-layer fire hose processing technology. Background Art

[0002] In current fire hose manufacturing technology, fire hoses are flexible pipes used to transport flame-retardant liquids such as high-pressure water or foam. Traditional fire hoses have a rubber lining and a woven linen outer surface. Advanced fire hoses are made of polymer materials such as polyurethane. Double-layer fire hose manufacturing requires pulling the inner hollow tube and the plastic liner into an outer protective sheath, necessitating the use of a threading or sleeve device.

[0003] The utility model patent with authorization announcement number CN209699883U discloses a traction-type casing machine for fire hoses, including a workbench for flattening the inner layer of the fire hose, and a traction mechanism arranged on the rear side of the workbench for traction of the outer layer of the fire hose; the traction mechanism includes a guide groove extending along the rear edge of the workbench, a slider engaged in the guide groove through a guide wheel, a traction belt assembly that tractions the slider to slide back and forth in the guide groove, and a traction frame fixed on the slider and laterally cantilevered above the workbench; the traction frame is provided with a clip for clamping the inner layer of the fire hose, and a hook for hooking the outer layer of the fire hose.

[0004] However, the above patents have the following shortcomings: 1. In the above patent, the inner layer of the fire hose is laid flat on the workbench by using a traction mechanism, and then the outer layer is pulled and put on the inner layer, which greatly reduces the labor intensity of the workers. However, when threading the double-layer hose, a plastic liner tube needs to be passed between the outer protective sleeve and the inner hollow tube, and the plastic liner tube is melted to fix the outer protective sleeve and the inner hollow tube. Therefore, the surface of the plastic liner tube has an adhesive layer. When the plastic liner tube is threaded, the adhesive layer on the surface of the plastic liner tube is prone to creases or bends on the surface of the outer protective sleeve, which easily rubs against the outer protective sleeve and the inner hollow tube, damaging the adhesive layer and reducing the firmness of the fire hose after heat sealing; 2. The fire hoses of the above patents and commonly used ones need to be trimmed after being passed through the pipes. The fire hoses need to be fixed manually, which is labor-intensive and has low trimming efficiency. Summary of the Invention

[0005] The present invention provides a double-layer fire hose processing technology, which aims to solve the problem mentioned in the above background that the surface of the outer protective cover is prone to creases or bends, and the adhesive layer on the surface of the plastic liner pipe is prone to friction with the outer protective cover and the inner hollow pipe, thereby damaging the adhesive layer, reducing the firmness of the fire hose after heat sealing, and requiring manual fixation of the fire hose, which is labor-intensive.

[0006] The present invention is achieved by a double-layer fire hose processing process, comprising the following steps: S1. Weaving an outer protective cover of a fire hose by a weaving machine, wherein the outer protective cover is woven from warp and weft yarns, and a fiber layer is coated on the outer surface of the outer protective cover; S2. Forming a hollow tube and a plastic-lined tube using an extruder, and coating an adhesive layer on the outer wall of the plastic-lined tube; S3, sequentially inserting the plastic lining tube and the hollow tube into the interior of the outer protective sleeve using a threading device, and trimming the fire hose after the threading; S4. Steam is introduced into the interior of the fire hose to heat-seal it, and cooling gas is introduced into the interior of the fire hose to cool it down, and the fire hose is reeled in using a reeling device.

[0007] Preferably, the belt threading device includes a tube pulling mechanism, the tube pulling mechanism includes a working platform, and a bottom wall of the working platform is fixedly mounted with a plurality of supporting legs; The working platform is fixedly mounted with a mounting frame, on which a plurality of reeling shafts are fixedly mounted, and on which a pull rope is fixed and wound, one end of the pull rope is fixedly connected to the reeling shaft, and the other end of the pull rope is fixedly mounted with a fixing clamp, and both sides of the outer wall of the fixing clamp are embedded with magnetic suction parts; A plurality of drive motors are fixedly installed on the working platform, and the drive motors are connected to the corresponding winding shafts. In this scheme, the outer protective cover is first clamped by the corresponding fixed clamps, and the drive motor drives the winding shaft to rotate, so that the pull rope is wound around the winding shaft, so that the outer protective cover passes through the remaining fixed clamps, and the hollow tube and the plastic lining are clamped by the remaining fixed clamps, driving the hollow tube and the plastic lining to move and pass through the outer protective cover.

[0008] Preferably, a support frame is fixedly installed on the working platform, and a plurality of support rollers are rotatably installed on the support frame, and the plurality of support rollers are evenly distributed on the support frame; in this solution, the outer protective cover is supported by a plurality of support rollers to move, so that its sliding friction is converted into rolling friction, thereby reducing the wear of the outer protective cover.

[0009] Preferably, a plurality of tensioning mechanisms are fixedly mounted on the working platform, and the tensioning mechanisms include circular support plates, and the support plates are fixedly mounted on the upper surface of the working platform via supports at the bottom ends; A circular groove begins to be formed on the support plate; in this solution, the outer protective sleeve, the plastic lining tube and the hollow tube pass through the groove.

[0010] Preferably, a support ring 1 and a support ring 2 are fixedly mounted on the side wall of the support plate, and the support ring 1 is sleeved on the outside of the support ring 2; A plurality of racks are slidably connected to the first support ring and the second support ring, and a support tube is fixedly installed on the rack. The plurality of racks are evenly distributed around the center point of the support plate; An air pump is fixedly installed on the support leg. The air outlet end of the air pump is communicated with the support tube through a plurality of hoses. In this solution, the inner wall of the outer protection is supported by the support tube on the rack, and the air pump transports external air to the support tube and sprays it through the support tube, so as to use the air to support the outer protective sleeve.

[0011] Preferably, a plurality of transmission gears are rotatably installed on the side wall of the support plate, and the plurality of transmission gears are meshed with the corresponding racks; An internal gear ring is rotatably installed inside the second support ring, and the internal gear ring is meshed with the transmission gear; A drive gear meshed with the internal gear ring is rotatably installed on the side wall of the support plate, and a second drive motor is fixedly installed on the outer wall of the support plate. The second drive motor is drivingly connected to the drive gear. In this solution, the second drive motor drives the drive gear to rotate, thereby driving the internal gear ring to rotate, and then driving the plurality of transmission gears to rotate. The transmission gears are used to drive the corresponding racks to move, so as to tension the outer protective sleeve through the support tube on the rack.

[0012] Preferably, a conveying mechanism is fixedly installed on the working platform. The conveying mechanism includes a "U"-shaped conveying frame, and the conveying frame is fixedly installed on the upper surface of the working platform; A second conveying roller is rotatably installed on the conveying frame, and a second reduction motor is fixedly installed on the conveying frame. The second reduction motor is drivingly connected to the second conveying roller. In this solution, the second reduction motor drives the second conveying roller to rotate.

[0013] Preferably, sliding grooves are formed in the inner walls on both sides of the conveying frame, and sliders are slidably connected in the two sliding grooves. Two pneumatic push rods are fixedly installed on the conveying frame, and the telescopic ends of the pneumatic push rods are fixedly connected to the corresponding sliders; A first conveying roller is rotatably installed on the two sliders, and a first reduction motor is fixedly installed on the slider. The first reduction motor is drivingly connected to the first conveying roller; And a connecting frame is fixedly installed on the side wall of the conveying frame, and a guiding roller is rotatably installed on the connecting frame. In this solution, the two pneumatic push rods drive the sliders to move longitudinally, so as to adjust the height of the first conveying roller. The first conveying roller and the second conveying roller are used to contact the outer protective sleeve. The first reduction motor drives the first conveying roller to rotate, so as to convey the outer protective sleeve through the rotating first conveying roller and the second conveying roller, so that the remaining fixing clips pass through the outer protective sleeve.

[0014] Preferably, a fixing seat is fixedly installed on the working platform, and a plurality of fixing grooves are formed in the fixing seat; A plurality of electric push rods are fixedly installed on the upper surface of the fixed seat. The telescopic ends of the plurality of electric push rods all penetrate through the top wall of the fixed seat and are installed with pressing plates, and the pressing plates are arranged inside the fixed grooves. In this solution, the fire hose that has been threaded passes through the fixed grooves, and the electric push rods drive the telescopic ends to expand and contract, so that the pressing plates cooperate with the fixed grooves to squeeze the ends of the fire hose, facilitating subsequent trimming.

[0015] Compared with the prior art, the beneficial effects of the present invention are: A double-layer fire hose processing technology of the present invention 1. Threading is carried out through a threading device, and a tensioning mechanism is installed inside the device. The tensioning mechanism is used to expand the outer protective sleeve and blow air into it, reducing the creases and wrinkles inside it, facilitating the entry of the plastic inner lining tube into the outer protective sleeve, and preventing damage to the rubber layer; 2. After the plastic inner lining tube is threaded, gas is blown into the gap between the plastic inner lining tube and the outer protective sleeve through a plurality of support tubes on the tensioning mechanism, increasing the air flow rate in the gap and reducing the pressure inside the gap, so that the plastic inner lining tube adheres to the inner wall of the outer protective sleeve, facilitating the passage of the hollow tube and improving the fusion quality of subsequent hot processing; 3. A fixed seat is fixedly installed on the working platform, a plurality of fixed grooves are provided on the fixed seat, a plurality of electric push rods are fixedly installed on the upper surface of the fixed seat, the telescopic ends of the plurality of electric push rods all penetrate through the top wall of the fixed seat and are installed with pressing plates, and the pressing plates are arranged inside the fixed grooves. The electric push rods drive the pressing plates to move longitudinally, and the ends of the fire hose are clamped by the pressing plates to prevent movement during trimming. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the whole of the present invention Figure 2 is of the present invention Figure 1 an enlarged view of part A in Figure 3 is a schematic structural diagram of the conveying mechanism of the present invention Figure 4 is a schematic structural diagram of the tensioning mechanism of the present invention Figure 5 is a schematic structural diagram of the fixed seat of the present invention In the figure: 1. Pipe pulling mechanism; 11. Working platform; 12. Support legs; 13. Support frame; 131. Support rollers; 14. Installation frame; 15. Take-up reel; 16. Pulling rope; 161. Fixed clamp; 17. Driving motor one; 18. Fixed seat; 181. Fixed groove; 19. Electric push rod; 191. Pressing plate; 2. Conveyor mechanism; 21. Conveyor frame; 211. Chute; 212. Connecting frame; 22. Pneumatic push rod; 221. Slide block; 23. First conveyor roller; 231. First reduction motor; 24. Second conveyor roller; 241. Second reduction motor; 25. Guide roller; 3. Tensioning mechanism; 31. Support plate; 311. Through groove; 312. Transmission gear; 32. First support ring; 321. Internal gear ring; 33. Second support ring; 34. Rack; 341. Support pipe; 35. Second drive motor; 351. Drive gear; 36. Air pump. Detailed implementation manners

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention.

[0018] [[ID=IO]]The components of the embodiments of the present invention usually described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0019] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: a double-layer fire hose processing process, including the following steps: S1. Weave the outer protective sleeve of the fire hose through a knitting machine. The outer protective sleeve is woven from warp and weft threads, and a fiber layer is coated on the outer surface of the outer protective sleeve; S2. Use an extruder to form a hollow tube and a plastic inner lining tube, and coat an adhesive layer on the outer wall of the plastic inner lining tube; S3. Sequentially pass the plastic inner lining tube and the hollow tube into the interior of the outer protective sleeve through a tube threading device, and trim the edges of the fire hose after the tubes are passed through; S4. Pass steam into the interior of the fire hose to heat-seal it, and pass cooling gas to cool it down, and use a winding device to wind the fire hose.

[0023] The tube threading device includes a tube pulling mechanism 1. The tube pulling mechanism 1 includes a working platform 11. A plurality of support legs 12 are fixedly installed on the bottom wall of the working platform 11. An installation frame 14 is fixedly installed on the working platform 11. A plurality of winding shafts 15 are fixedly installed on the installation frame 14. A pulling rope 16 is fixedly installed and wound around the winding shaft 15. One end of the pulling rope 16 is fixedly connected to the winding shaft 15, and the other end is fixedly installed with a fixing clip 161. Magnetic parts are embedded on both outer walls of the fixing clip 161. A plurality of first driving motors 17 are fixedly installed on the working platform 11. The first driving motors 17 are drivingly connected to the corresponding winding shafts 15. A support frame 13 is fixedly installed on the working platform 11. A plurality of support rollers 131 are rotatably installed on the support frame 13. The plurality of support rollers 131 are evenly distributed on the support frame 13.

[0024] Among them, the first driving motors 17 may not be installed with a self-locking mechanism. By manually pulling a plurality of fixing clips 161, the plurality of fixing clips 161 are moved to the end of the working platform 11. Among them, the corresponding fixing clip 161 clamps the outer protective sleeve, and the remaining fixing clips 161 pass through the outer protective sleeve. The corresponding first driving motor 17 drives the corresponding winding shaft 15 to rotate, so as to wind the pulling rope 16 onto the winding shaft 15, and then pull the pulling rope 16. The outer protective sleeve is pulled through the corresponding fixing clip 161, so that the remaining fixing clips 161 pass through the outer protective sleeve, and the remaining fixing clips 161 can adsorb the guiding roller 25 through the magnetic parts to prevent movement during tube threading. The plurality of support rollers 131 support the moving outer protective sleeve, converting sliding friction into rolling friction.

[0025] A plurality of tensioning mechanisms 3 are fixedly installed on the upper part of the working platform 11. The tensioning mechanism 3 includes a circular support plate 31. The support plate 31 is fixedly installed on the upper surface of the working platform 11 through a support at the bottom end. A circular through groove 311 is formed in the support plate 31. A first support ring 32 and a second support ring 33 are fixedly installed on the side wall of the support plate 31. The first support ring 32 is sleeved outside the second support ring 33. A plurality of racks 34 are slidably connected between the first support ring 32 and the second support ring 33. A support tube 341 is fixedly installed on the upper part of the rack 34. The plurality of racks 34 are evenly arranged around the center point of the support plate 31. An air pump 36 is fixedly installed on the support leg 12. The air outlet end of the air pump 36 is communicated with the support tube 341 through a plurality of hoses. A plurality of transmission gears 312 are rotatably installed on the side wall of the support plate 31. The plurality of transmission gears 312 are engaged with the corresponding racks 34. An internal gear ring 321 is rotatably installed inside the second support ring 33. The internal gear ring 321 is engaged with the transmission gear 312. A driving gear 351 engaged with the internal gear ring 321 is rotatably installed on the side wall of the support plate 31. A second driving motor 35 is fixedly installed on the outer wall of the support plate 31. The second driving motor 35 is drivingly connected to the driving gear 351.

[0026] Further, after the outer protective sleeve passes through the through groove 311, the plurality of support tubes 341 are inserted into the end of the outer protective sleeve. The second driving motor 35 drives the driving gear 351 to rotate, and then drives the internal gear ring 321 to rotate. The internal gear ring 321 drives the plurality of transmission gears 312 to rotate, and then the plurality of transmission gears 312 drive the plurality of racks 34 to slide on the first support ring 32 and the second support ring 33, so that the plurality of support tubes 341 move away from each other. The air pump 36 conveys external air from the plurality of support tubes 341 into the outer protective sleeve, so that the outer protective sleeve expands, reducing the creases and wrinkles on its surface, facilitating the passing of the plastic inner lining tube. When the hollow tube passes through, the support tube 341 blows air into the outer protective sleeve and the plastic inner lining, accelerating the air flow rate and increasing the external pressure, so that the plastic inner lining tube fits inside the outer protective sleeve, facilitating their adhesion to each other. At the same time, an air filter and a cold dryer can be installed at the air inlet end of the air pump 36 to reduce impurities and moisture in the air, and reduce the entry of impurities and moisture into the fire hose.

[0027] A conveying mechanism 2 is fixedly installed on the working platform 11. The conveying mechanism 2 includes a "U"-shaped conveying frame 21. The conveying frame 21 is fixedly installed on the upper surface of the working platform 11. A second conveying roller 24 is rotatably installed on the conveying frame 21. A second reduction motor 241 is fixedly installed on the conveying frame 21. The second reduction motor 241 is drivingly connected to the second conveying roller 24. Sliding grooves 211 are formed in both inner side walls of the conveying frame 21. Sliders 221 are slidably connected in the two sliding grooves 211. Two pneumatic push rods 22 are fixedly installed on the conveying frame 21. The telescopic ends of the pneumatic push rods 22 are fixedly connected to the corresponding sliders 221. A first conveying roller 23 is rotatably installed on the two sliders 221. A first reduction motor 231 is fixedly installed on the slider 221. The first reduction motor 231 is drivingly connected to the first conveying roller 23. A connecting frame 212 is fixedly installed on the side wall of the conveying frame 21. A guiding roller 25 is rotatably installed on the connecting frame 212.

[0028] Specifically, the outer protective sleeve after passing through the through groove 311 passes through the second conveying roller 24. The pneumatic push rod 22 drives the slider 221 to slide in the sliding groove 211 to adjust the height of the first conveying roller 23, so that the first conveying roller 23 cooperates with the second conveying roller 24 to abut against the outer wall of the expanded outer protective sleeve. The first reduction motor 231 drives the first conveying roller 23 to rotate, and the second reduction motor 241 drives the second conveying roller 24 to rotate, thereby driving the outer protective sleeve to move through the first conveying roller 23 and the second conveying roller 24, conveying the outer protective sleeve, and supporting the outer protective sleeve through the guiding roller 25. And the guiding roller 25 is made of metal, which is convenient for the fixing clip 161 to adsorb the guiding roller 25.

[0029] A fixing seat 18 is fixedly installed on the working platform 11. A plurality of fixing grooves 181 are formed in the fixing seat 18. A plurality of electric push rods 19 are fixedly installed on the upper surface of the fixing seat 18. The telescopic ends of the plurality of electric push rods 19 all penetrate through the top wall of the fixing seat 18 and are provided with pressing plates 191. The pressing plates 191 are arranged inside the fixing grooves 181.

[0030] It should be noted that the completed fire hose after threading passes through the corresponding fixing grooves 181. The electric push rod 19 drives the pressing plate 191 to move longitudinally, and the end of the fire hose is fixed through the cooperation of the pressing plate 191 and the fixing groove 181, which is convenient for trimming its edge.

[0031] The working principle and usage process of the present invention: Please refer to Figures 1-5, after the present invention is installed, a programmable controller can be installed on the support leg 12, which can control the pump body of the drive motor 17, the electric push rod 19, the pneumatic push rod 22, the reduction motor 231, the reduction motor 241, the drive motor 35 and the air pump 36, so as to control the tape threading device. By manually pulling a plurality of fixing clips 161, the plurality of fixing clips 161 are moved to the end of the working platform 11, wherein the corresponding fixing clips 161 clamp the outer protective sleeve, and the remaining fixing clips 161 pass through the outer protective sleeve. After passing through the through groove 311, the outer protective sleeve passes through the conveying roller 24. The pneumatic push rod 22 drives the slider 221 to slide in the chute 211 to adjust the height of the conveying roller 23, so that the conveying roller 23 cooperates with the conveying roller 24 to abut against the outer wall of the expanded outer protective sleeve. The reduction motor 231 drives the conveying roller 23 to rotate, and the reduction motor 241 drives the conveying roller 24 to rotate, so as to drive the outer protective sleeve to move through the conveying roller 23 and the conveying roller 24, convey the outer protective sleeve. The corresponding drive motor 17 drives the corresponding winding shaft 15 to rotate, so as to wind the pull rope 16 onto the winding shaft 15, and then pull the pull rope 16, pull the outer protective sleeve through the corresponding fixing clip 161, drive the outer protective sleeve to move, so that the remaining fixing clips 161 pass through the outer protective sleeve, and the remaining fixing clips 161 can adsorb the guiding roller 25 through the magnetic parts to prevent movement during pipe threading. When the outer protective sleeve passes through the through groove 311, a plurality of support pipes 341 are inserted into the end of the outer protective sleeve. The drive motor 35 drives the drive gear 351 to rotate, and then drives the internal gear ring 321 to rotate. The internal gear ring 321 drives a plurality of transmission gears 312 to rotate, and then a plurality of racks 34 are driven to slide on the support ring 32 and the support ring 33 by the plurality of transmission gears 312, so that the plurality of support pipes 341 move away from each other. The air pump 36 conveys external air from a plurality of support pipes 341 into the outer protective sleeve, so that the outer protective sleeve expands, reducing the creases and wrinkles on its surface, facilitating the passage of the plastic inner lining pipe. And when the hollow pipe passes through, the support pipe 341 blows air into the outer protective sleeve and the plastic inner lining, accelerating the air flow rate, increasing the external pressure, so that the plastic inner lining pipe fits inside the outer protective sleeve, facilitating their adhesion to each other. The completed fire hose after tape threading passes through the corresponding fixing groove 181, and the electric push rod 19 drives the pressing plate 191 to move longitudinally, and the end of the fire hose is fixed by the pressing plate 191 cooperating with the fixing groove 181, facilitating subsequent processing of the fire hose.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A processing technology for double-layer fire hoses, characterized in that, It includes the following steps: S1. Weave the outer protective sleeve of the fire hose through a knitting machine. The outer protective sleeve is woven by warp and weft threads, and a fiber layer is coated on the outer surface of the outer protective sleeve; S2. Use an extruder to form a hollow tube and a plastic inner liner tube, and coat an adhesive layer on the outer wall of the plastic inner liner tube; S3. Pass the plastic inner liner tube and the hollow tube into the interior of the outer protective sleeve through a tube threading device in sequence, and trim the edges of the fire hose after threading the tubes; S4. Pass steam into the interior of the fire hose to heat-seal it, and pass cooling gas to cool it, and wind up the fire hose by a winding device.

2. The processing technology of a double-layer fire hose as described in claim 1, characterized in that: The tube threading device includes a tube pulling mechanism. The tube pulling mechanism includes a working platform, and a plurality of support legs are fixedly installed on the bottom wall of the working platform; An installation frame is fixedly installed on the working platform. A plurality of winding shafts are fixedly installed on the installation frame. A pulling rope is fixedly wound on the winding shaft. One end of the pulling rope is fixedly connected to the winding shaft, and the other end is fixedly installed with a fixed clip. Magnetic absorption parts are embedded on the outer walls on both sides of the fixed clip; A plurality of driving motors I are fixedly installed on the working platform, and the driving motors I are in transmission connection with the corresponding winding shafts.

3. The processing technology of a double-layer fire hose according to claim 2, characterized in that: A support frame is fixedly installed on the working platform. A plurality of support rollers are rotatably installed on the support frame, and the plurality of support rollers are evenly distributed on the support frame.

4. A double-layer fire hose processing technology according to claim 2, characterized in that: A plurality of tensioning mechanisms are fixedly installed on the upper surface of the working platform. The tensioning mechanism includes a circular support plate. The support plate is fixedly installed on the upper surface of the working platform through a support at the bottom end; A circular through groove is formed in the support plate.

5. The processing technology of a double-layer fire hose according to claim 4, characterized in that: A support ring I and a support ring II are fixedly installed on the side wall of the support plate. The support ring I is sleeved outside the support ring II; A plurality of racks are slidably connected to the support ring I and the support ring II. A support tube is fixedly installed on the rack. The plurality of racks are evenly distributed around the center point of the support plate; An air pump is fixedly installed on the support leg. The air outlet end of the air pump is communicated with the support tube through a plurality of hoses.

6. The processing technology of a double-layer fire hose as described in claim 5 is characterized in that: A plurality of transmission gears are rotatably installed on the side wall of the support plate. The plurality of transmission gears are meshed with the corresponding racks; An internal gear ring is rotatably installed inside the support ring II. The internal gear ring is meshed with the transmission gear; A driving gear meshed with the internal gear ring is rotatably installed on the side wall of the support plate. A driving motor II is fixedly installed on the outer wall of the support plate. The driving motor II is in transmission connection with the driving gear.

7. The processing technology of a double-layer fire hose according to claim 2, characterized in that: A conveying mechanism is fixedly installed on the working platform. The conveying mechanism includes a "U"-shaped conveying frame. The conveying frame is fixedly installed on the upper surface of the working platform; A conveying roller II is rotatably installed on the conveying frame. A reduction motor II is fixedly installed on the conveying frame. The reduction motor II is in transmission connection with the conveying roller II.

8. A double-layer fire hose processing technology according to claim 7, characterized in that: Chute grooves are formed in the inner walls on both sides of the conveying frame. Sliders are slidably connected in the two chute grooves. Two pneumatic push rods are fixedly installed on the conveying frame. The telescopic ends of the pneumatic push rods are fixedly connected to the corresponding sliders; A conveying roller I is rotatably installed on the two sliders, and a speed reduction motor I is fixedly installed on the slider, and the speed reduction motor I is in transmission connection with the conveying roller I; A connecting frame is fixedly installed on the side wall of the conveying frame, and a guiding roller is rotatably installed on the connecting frame.

9. The processing technology of a double-layer fire hose according to claim 2, characterized in that: A fixed seat is fixedly installed on the working platform, and a plurality of fixed grooves are formed in the fixed seat; A plurality of electric push rods are fixedly installed on the upper surface of the fixed seat, and the telescopic ends of the plurality of electric push rods all penetrate through the top wall of the fixed seat and then are installed with pressing plates, and the pressing plates are arranged inside the fixed grooves.

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