Optical cable laying traction device

Abstract

The application discloses an optical cable laying traction device, and relates to the technical field of optical cable traction, which comprises a fixing frame, a traction assembly, an extrusion assembly and a fixing assembly. A layer partition plate is arranged on the lower side of the fixing frame. One end of the traction assembly is connected with the fixing frame, and the other end of the traction assembly is connected with the extrusion assembly. The side, away from the traction assembly, of the extrusion assembly is fixedly connected with the upper side of the layer partition plate. One end of the fixing assembly is connected with the bottom of the layer partition plate, and the other end of the fixing assembly is fixedly connected with the fixing frame. The pressure component of the application can transfer the filling liquid when the optical cable is being pulled through the deformation of the extrusion cavity. The transfer of the filling liquid can increase the pressure borne by the two sides of the optical cable line, so that the local friction force on the surface of the optical cable during the traction process tends to be equal, the traction stability is improved, and the damage to the surface of the optical cable line is reduced.

Description

Technical Field

[0001] This invention relates to the field of optical cable traction technology, specifically to an optical cable laying traction device. Background Technology

[0002] 5G communication features high speed and low latency. 5G communication infrastructure serves as the network infrastructure for realizing the interconnection of humans, machines, and things. The laying of optical cables is particularly important in the construction of 5G communication infrastructure. Optical cable pulling devices are required during the laying process, but existing optical cable pulling devices have some shortcomings and cannot meet the usage requirements.

[0003] Existing optical cable traction equipment uses a conveyor belt to transport optical cables during installation. The main force exerted by the conveyor belt on the optical cable is concentrated at the position where the optical cable is directly opposite the conveyor belt. The sides of the optical cable experience less deformation and pressure from the conveyor belt, which cannot generate sufficient pressure and thus results in insufficient friction. This phenomenon can lead to excessive local stress during the optical cable traction process, making the optical cable prone to damage.

[0004] Traditional fiber optic cable pulling equipment requires manual tension adjustment before use. During the cable pulling process, the conveyor belt heats up due to friction, causing a slight thermal expansion. Existing tension adjustment equipment cannot balance this expansion during operation, increasing wear on the conveyor belt. Furthermore, traditional equipment does not automatically stop the conveyor belt when the cable gets stuck, leading to rapid relative sliding between the belt and the cable, which can easily break the cable. Summary of the Invention

[0005] The purpose of this invention is to provide an optical cable laying and pulling device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an optical cable laying traction device, including a fixing frame, a traction component, a squeezing component, and a fixing component. A partition plate is provided on the lower side of the fixing frame. One end of the traction component is connected to the fixing frame, and the other end of the traction component is connected to the squeezing component. The side of the squeezing component away from the traction component is fastened to the upper part of the partition plate. One end of the fixing component is connected to the bottom of the partition plate, and the other end of the fixing component is fastened to the fixing frame. The fixing component controls the movement and fixation of the traction device. The squeezing component drives the traction component to clamp the optical cable. After clamping, the traction component pulls the optical cable to assist in the laying of the optical cable. The pressure component of the present invention transfers the filling fluid during the traction of the optical cable through the deformation of the squeezing chamber. The transfer of the filling fluid increases the pressure on both sides of the optical cable, making the local friction force on the surface of the optical cable tend to be equal during the traction process, increasing the traction stability and reducing damage to the surface of the optical cable.

[0007] Furthermore, the traction assembly includes an upper traction plate, a lower traction plate, a traction unit, and a guide block. The upper traction plate is securely connected to the fixing frame, and the lower traction plate is securely connected to the compression assembly. Two sets of traction units are provided, each securely connected to the upper and lower traction plates respectively. The guide block is securely connected to the fixing frame. When the optical cable needs to be pulled, the compression assembly moves the lower traction plate upwards, the optical cable is clamped and pulled by the traction unit, and the guide block guides the optical cable.

[0008] Furthermore, the traction unit includes a mounting box, a support frame, a support sheet metal, a drive wheel, a conveyor belt, and a tensioning component. There are two sets of mounting boxes, each securely connected to the upper and lower traction plates, respectively. One end of the support frame is securely connected to the mounting box, and the other end is connected to the drive wheel. There are two drive wheels, and the conveyor belt is fitted onto the two drive wheels. The support sheet metal is securely connected to the support frame, and the tensioning component is securely connected to the support sheet metal. The drive wheel in this invention has a drive mechanism inside, allowing it to rotate. The conveyor belt rotates under the drive of the drive wheel. The support sheet metal supports the end of the conveyor belt facing outwards from the mounting box, and the tensioning component tensions the conveyor belt. The two sets of conveyor belts press against each other and rotate, pulling the optical cable forward.

[0009] Furthermore, multiple pressure components are embedded inside the conveyor belt, evenly distributed along the conveyor belt. Each pressure component includes a fixed frame, a compression chamber, a piston sleeve, and a compression block. The fixed frame is embedded inside the conveyor belt, and the piston sleeve is securely connected to the fixed frame. There are two sets of piston sleeves, located on opposite sides of the inner wall of the fixed frame. The compression chamber is located inside the fixed frame on the side furthest from the outer surface of the conveyor belt. The compression block is slidably connected to the piston sleeve, and an arc-shaped pressure block is located on the side of the compression block furthest from the piston sleeve. Pipes are located on both sides of the compression chamber, communicating with the inside of the piston sleeve. The conveyor belt surface is made of rubber. When pulling the optical cable, the conveyor belt wraps around the cable, with the greatest deformation and friction at the center of the contact point. This results in localized excessive stress on the surface of the optical cable during traction. To address this issue, the present invention incorporates multiple sets of pressure components inside the conveyor belt, which surround and are wrapped by the conveyor belt, without affecting its normal transmission. When the optical cable is held by the conveyor belt, it is positioned in the center of the fixed frame. Under the pressure of the optical cable, the surface of the conveyor belt indents inward. Since there is no rigid material outside the compression chamber for protection, the compression chamber deforms as the conveyor belt indents. Both the compression chamber and the piston sleeve are filled with a filling fluid. When the compression chamber deforms, the filling fluid is forced into the piston sleeve. The piston sleeve is made of a rigid material. When the optical cable compresses the conveyor belt surface, the pressure exerted on both sides of the cable is relatively small, and the piston sleeve also bears some of the pressure. Therefore, the pressure on the compression block is significantly less than that on the compression chamber. When the filling fluid is forced into the piston sleeve, the pressure difference is transferred to the compression block, pushing it away from the piston sleeve. The arc-shaped compression block's contour is set to match the optical cable's shape. This arc-shaped compression block presses the conveyor belt towards both sides of the optical cable, compensating for the pressure difference and reducing local frictional differences. The pressure component of this invention transfers the filling fluid during the traction of the optical cable by deforming the extrusion chamber. This transfer increases the pressure on both sides of the optical cable, making the local friction force on the surface of the optical cable more equal during traction, thus increasing traction stability and reducing damage to the surface of the optical cable. On the other hand, it compresses most of the filling fluid to the side away from the friction between the conveyor belt and the supporting sheet metal, increasing the contact area between the filling fluid and the conveyor belt away from the sliding friction side, improving the rate of heat dissipation, and reducing the local temperature.

[0010] Furthermore, the tensioning components include a tensioning wheel, a half-sleeve, a tension spring, a hinged rod, a support base, and a slider. The tensioning wheel and the half-sleeve are rotatably connected. There are two half-sleeves, which are slidably connected. The overlapping area of ​​the two half-sleeves forms a sealed chamber. The tension spring is located inside the sealed chamber, and both ends of the tension spring are fastened to the two half-sleeves respectively. One end of the support base is fastened to the support sheet metal, and the other end of the support base is slidably connected to the two half-sleeves respectively. There are two hinged rods, one end of which is hinged to the two half-sleeves respectively, and the other end of the two hinged rods is hinged to the slider. The slider and the support base are slidably connected. The sealed chamber is filled with gas. Under normal conditions, the tension spring pulls the half-sleeve, reducing the length of the overlapping area, increasing the distance between the two tensioning wheels, and the tensioning wheels tighten the conveyor belt. During the traction of the optical cable, the conveyor belt is pressed against the surface of the support sheet metal. The friction between the conveyor belt and the support sheet metal generates heat. The heated expansion of the conveyor belt further increases friction, affecting the traction operation. At this point, the heat from the conveyor belt is transferred to the tensioning rollers. The half-sleeves of this invention are made of a thermally conductive material, which transfers the temperature rise to the gas inside the sealed chamber. The gas expands due to heat, the sealed chamber elongates, the total length of the two half-sleeves decreases, and the tension decreases, balancing the increase in friction. Specific adjustment values ​​can be set according to the characteristics of the finished material. When the optical cable is jammed, the conveyor belt and the optical cable slide relative to each other. The side pulling the optical cable is made rough, and the optical cable no longer moves. The friction between them is high, and the generated heat is transferred to the sealed chamber, further reducing the distance between the tensioning rollers and causing the conveyor belt to slip, thus avoiding excessive pulling on the optical cable. The tensioning component of this invention adjusts the tension in real time according to changes in friction temperature, greatly improving the overall stability of the tension. Furthermore, when the optical cable is jammed, the tensioning component can further reduce the tension, causing the conveyor belt to actively slip and preventing overheating due to friction.

[0011] Furthermore, the extrusion assembly includes a telescopic rod and a pusher cylinder. One end of the telescopic rod is securely connected to the partition plate, and the other end is securely connected to the lower traction plate. The pusher cylinder is also securely connected to the partition plate, and its output shaft is securely connected to the lower traction plate. When it is necessary to pull the optical cable, the pusher cylinder will push the lower traction plate upward. The telescopic rod is extendable and can guide the movement of the lower traction plate.

[0012] Furthermore, the fixing components include a lifting plate, moving wheels, fixed feet, connecting screw, connecting worm, crank, worm wheel, transmission gear, transmission rack, and counterweight. The lifting plate and the fixing frame are slidably connected; the moving wheels are fastened to the bottom side of the lifting plate; the fixed feet are fastened to the outer wall of the fixing frame; the connecting screw and the connecting worm are fastened; the connecting screw, the connecting worm, and the fixing frame are rotatably connected; the connecting worm is fastened to the crank; the worm wheel is rotatably connected to the side wall of the fixing frame; the worm wheel is fastened to the transmission gear; the worm wheel meshes with the connecting worm; the transmission rack is fastened to the lifting plate; the lifting plate meshes with the transmission rack; a screw nut is embedded inside the counterweight; the screw nut meshes with the connecting screw; and the counterweight is slidably connected to the partition plate. When the traction device is moved, the moving wheels provide support and propel the device forward. Upon reaching the traction position, cranking the handle rotates the connecting worm gear, which in turn rotates the worm wheel. The worm wheel meshes with the transmission rack, lifting the rack and causing the lifting plate to rise. The fixed feet then lower to the ground for support, and the moving wheels are lifted. The rotation of the connecting worm gear also drives the connecting screw to rotate, engaging with the screw nut. The screw nut moves the counterweight, which was originally in the center of the traction device. When the traction device is switched to a fixed state, the counterweight moves away from the side where the optical cable is pulled in. This invention, through flexible adjustment of the traction device's fixed state, ensures both the flexibility and stability of the traction device. Furthermore, by adding counterweight away from the pulling position during adjustment, it prevents the optical cable from tipping over due to excessive force on one side during traction.

[0013] Furthermore, the fixing assembly also includes a load-bearing bracket with two locking slots. The load-bearing bracket is securely connected to the lifting plate. There are two sets of load-bearing brackets, positioned near the sides of the lifting plate. The connecting screw and worm gear are positioned as smooth rods near the fixing frame. The smooth rods of the connecting screw and worm gear can be engaged into the locking slots. The engagement position of the load-bearing bracket can be manually adjusted by adjusting the position of the lifting plate. The upper and lower positions of the lifting plate correspond to the two locking slots respectively. The load-bearing bracket engaging with the smooth rod reduces the load on the worm gear and extends its service life.

[0014] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: The pressure component of this invention, through the deformation of the extrusion chamber, transfers the filling fluid during the traction of the optical cable. This transfer increases the pressure on both sides of the optical cable, making the local frictional force on the cable surface more equal during traction, thus increasing traction stability and reducing damage to the cable surface. Furthermore, by pressing most of the filling fluid to the side away from the friction between the conveyor belt and the supporting sheet metal, the contact area between the filling fluid and the conveyor belt away from the sliding friction side is increased, improving the heat dissipation rate and reducing local temperature. The tensioning component of this invention adjusts the tension in real time according to changes in friction temperature, greatly improving the overall tension stability. Moreover, when the optical cable gets stuck, the tensioning component can further reduce the tension, causing the conveyor belt to actively slip and preventing overheating due to friction. This invention ensures the flexibility of the traction device's movement and increases its stability by flexibly adjusting the fixed state of the traction device. At the same time, when adjusting the state, a counterweight is added away from the pulling position to avoid the optical cable being overturned due to excessive force on one side. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the traction unit of the present invention;

[0018] Figure 3 This is a cross-sectional view of the pressure component of the present invention in an uncompressed state;

[0019] Figure 4 This is a cross-sectional view of the pressure component of the present invention under compression.

[0020] Figure 5 This is a schematic diagram of the overall structure of the tensioner wheel of the present invention;

[0021] Figure 6 This is a schematic diagram of the fixed component of the present invention in a moving state;

[0022] Figure 7 This is a schematic diagram of the fixing component of the present invention in a fixed state;

[0023] Figure 8 This is a diagram showing the connection relationship between the worm gear and the transmission gear of the present invention;

[0024] In the diagram: 1-Fixed frame, 2-Traction assembly, 21-Upper traction plate, 22-Lower traction plate, 23-Traction unit, 231-Mounting box, 232-Support frame, 233-Support sheet metal, 234-Transmission wheel, 235-Conveyor belt, 236-Tensioning component, 2361-Tensioning wheel, 2362-Half sleeve, 2363-Tension spring, 2364-Hinge rod, 2365-Support base, 2366-Slider, 237-Pressure component. 2371-Fixed frame, 2372-Extrusion chamber, 2373-Piston sleeve, 2374-Extrusion block, 24-Guide block, 3-Extrusion assembly, 31-Telescopic rod, 32-Pushing electric cylinder, 4-Fixed assembly, 41-Lifting plate, 42-Moving wheel, 43-Fixed foot, 44-Connecting screw, 45-Connecting worm gear, 46-Crank handle, 47-Worm wheel, 48-Transmission gear, 49-Transmission rack, 410-Counterweight block, 411-Bearing bracket. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, an optical cable laying and pulling device includes a fixing frame 1, a pulling component 2, a pressing component 3, and a fixing component 4. A partition plate is provided on the lower side of the fixing frame 1. One end of the pulling component 2 is connected to the fixing frame 1, and the other end is connected to the pressing component 3. The side of the pressing component 3 away from the pulling component 2 is fastened to the upper part of the partition plate. One end of the fixing component 4 is connected to the bottom of the partition plate, and the other end is fastened to the fixing frame 1. The fixing component 4 controls the movement and fixation of the pulling device. The pressing component 3 drives the pulling component 2 to clamp the optical cable. After clamping, the pulling component 2 pulls the optical cable, assisting in the laying of the optical cable. The pressure component 237 of this invention, through the deformation of the pressing chamber 2372, transfers the filling fluid during the pulling of the optical cable. This transfer of the filling fluid increases the pressure on both sides of the optical cable, making the local friction force on the surface of the optical cable tend to be equal during the pulling process, increasing the pulling stability and reducing damage to the surface of the optical cable.

[0027] like Figure 1As shown, the traction assembly 2 includes an upper traction plate 21, a lower traction plate 22, a traction unit 23, and a guide block 24. The upper traction plate 21 is securely connected to the fixing frame 1, and the lower traction plate 22 is securely connected to the compression assembly 3. Two sets of traction units 23 are provided, and the two sets of traction units 23 are securely connected to the upper traction plate 21 and the lower traction plate 22 respectively. The guide block 24 is securely connected to the fixing frame 1. When it is necessary to pull the optical cable, the compression assembly 3 drives the lower traction plate 22 to move upward, and the optical cable is clamped and pulled by the traction unit 23. The guide block 24 guides the optical cable.

[0028] like Figures 2-4 As shown, the traction unit 23 includes a mounting box 231, a support frame 232, a support sheet metal 233, a transmission wheel 234, a conveyor belt 235, and a tensioning component 236. There are two sets of mounting boxes 231, which are respectively fastened to the upper traction plate 21 and the lower traction plate 22. One end of the support frame 232 is fastened to the mounting box 231, and the other end of the support frame 232 is connected to the transmission wheel 234. There are two transmission wheels 234, and the conveyor belt 235 is fitted on the two transmission wheels 234. The support sheet metal 233 is fastened to the support frame 232, and the tensioning component 236 is fastened to the support sheet metal 233. The transmission wheel 234 of this invention is equipped with a drive mechanism inside, which can rotate. The conveyor belt 235 can rotate under the drive of the transmission wheel 234. The support sheet metal 233 supports one end of the conveyor belt 235 facing the outside of the mounting box 231. The tensioning component 236 tensions the conveyor belt 235. The two sets of conveyor belts 235 squeeze and rotate against each other, pulling the optical cable forward.

[0029] like Figure 3 , Figure 4As shown, a pressure component 237 is embedded inside the conveyor belt 235. Multiple sets of pressure components 237 are evenly distributed along the conveyor belt 235. Each pressure component 237 includes a fixed frame 2371, a squeezing chamber 2372, a piston sleeve 2373, and a squeezing block 2374. The fixed frame is embedded inside the conveyor belt. The piston sleeve 2373 is fastened to the fixed frame 2371. There are two sets of piston sleeves 2373, which are respectively located on both sides of the inner wall of the fixed frame 2371. The squeezing chamber 2372 is located inside the fixed frame 2371 on the side away from the outer surface of the conveyor belt 235. The squeezing block 2374 is slidably connected to the piston sleeve 2373. An arc-shaped pressure block is provided on the side of the squeezing block 2374 away from the piston sleeve 2373. Pipes are provided on both sides of the squeezing chamber 2372, and the pipes are connected to the inside of the piston sleeve 2373. The conveyor belt surface is made of rubber. When pulling the optical cable, the conveyor belt 235 wraps around the optical cable. The deformation is greatest at the center of the contact point with the optical cable, and the friction force at this location is the greatest. This results in localized excessive stress on the surface of the optical cable during the pulling process. To solve this problem, the present invention provides pressure components 237 inside the conveyor belt 235. Multiple sets of pressure components 237 are arranged around the conveyor belt 235 and are wrapped by the conveyor belt 235, without affecting the normal transmission of the conveyor belt 235. When the optical cable is clamped by the conveyor belt 235, the optical cable is located in the middle of the fixing frame 2371. Under the compression of the optical cable, the surface of the conveyor belt 235 is concave inward. The compression cavity 2372 does not have a rigid material as a protective shell. When the conveyor belt 235 is concave, the compression cavity 2372 is deformed by compression. The compression cavity 2372 and the piston sleeve 2373 are filled with filling fluid. When the extrusion chamber 2372 deforms, the filling fluid inside the extrusion chamber 2372 is squeezed into the piston sleeve 2373. The piston sleeve 2373 is made of a rigid material. When the optical cable squeezes the surface of the conveyor belt 235, the extrusion force of the optical cable to both sides is relatively small, and the piston sleeve 2373 also bears part of the extrusion force. Therefore, the extrusion force on the extrusion block is significantly less than the extrusion force on the extrusion chamber. When the filling fluid is squeezed into the piston sleeve 2373, the pressure difference will be transferred to the extrusion block 2374. The extrusion block 2374 is pushed away from the piston sleeve 2373. The contour of the arc-shaped pressure block is set to be consistent with the optical cable. The arc-shaped pressure block will press the conveyor belt to both sides of the optical cable. This compression compensates for the pressure difference and reduces the difference in local friction.The pressure component 237 of the present invention transfers the filling liquid during the traction of the optical cable by deforming the extrusion chamber 2372. The transfer of the filling liquid increases the pressure on both sides of the optical cable, making the local friction force on the surface of the optical cable tend to be equal during the traction process, thereby increasing the traction stability and reducing damage to the surface of the optical cable. On the other hand, it compresses most of the filling liquid to the side away from the friction between the conveyor belt and the supporting sheet metal, thereby increasing the contact area between the filling liquid and the conveyor belt on the side away from the sliding friction, improving the heat diffusion rate and reducing the local temperature.

[0030] like Figure 5As shown, the tensioning component 236 includes a tensioning wheel 2361, a half-sleeve 2362, a tension spring 2363, a hinge rod 2364, a support base 2365, and a slider 2366. The tensioning wheel 2361 and the half-sleeve 2362 are rotatably connected. There are two half-sleeves 2362, which are slidably connected. The overlapping area of ​​the two half-sleeves 2362 forms a sealed chamber. The tension spring 2363 is disposed inside the sealed chamber. Both ends of 363 are fastened to two half-sleeves 2362 respectively. One end of the support base 2365 is fastened to the support sheet metal 233, and the other end of the support base 2365 is slidably connected to the two half-sleeves 2362 respectively. There are two hinge rods 2364. One end of the two hinge rods 2364 is hinged to the two half-sleeves 2362 respectively, and the other end of the two hinge rods 2364 is hinged to the slider 2366. The slider 2366 and the support base 2365 are slidably connected. The sealed chamber is filled with gas. Under normal conditions, the tension spring 2363 pulls the half-sleeves 2362, reducing the length of the overlapping area, increasing the distance between the two tensioning wheels 2361, and the tensioning wheels 2361 tighten the conveyor belt 235. During the traction of the optical cable, the conveyor belt 235 is pressed against the surface of the supporting sheet metal 233. Friction between the conveyor belt 235 and the supporting sheet metal 233 generates heat, and the thermal expansion of the conveyor belt 235 further increases friction, affecting the traction operation. At this time, the heat from the conveyor belt 235 is transferred to the tensioning rollers 2361. The semi-sleeves 2362 of this invention are made of a thermally conductive material, which can transfer the temperature rise to the gas inside the sealed chamber. The gas expands due to heat, the sealed chamber elongates, the total length of the two semi-sleeves 2362 decreases, and the tension decreases, balancing the increase in friction. The specific adjustment value can be set according to the characteristics of the finished material. When the optical cable is jammed, the conveyor belt 235 and the optical cable slide relative to each other. The side pulling the optical cable is set with a rough surface. At this time, the optical cable no longer moves, and the friction between them is large. The generated heat is transferred to the sealed chamber, the distance between the tensioning rollers further decreases, and the conveyor belt 235 slips, avoiding excessive pulling on the optical cable. The tensioning component 236 of the present invention adjusts the tension in real time according to the change of friction temperature, which greatly improves the stability of the overall tension. On the other hand, when the optical cable gets stuck, the tensioning component 236 can further reduce the tension, so that the conveyor belt actively slips and avoids the conveyor belt from overheating due to friction.

[0031] like Figure 1 As shown, the extrusion assembly 3 includes a telescopic rod 31 and a push cylinder 32. One end of the telescopic rod 31 is fastened to the partition plate, and the other end is fastened to the lower traction plate 22. The push cylinder 32 is fastened to the partition plate, and the output shaft of the push cylinder 32 is fastened to the lower traction plate 22. When it is necessary to pull the optical cable, the push cylinder 32 will push the lower traction plate 22 upward. The telescopic rod 31 is telescopic and can guide the movement of the lower traction plate 22.

[0032] like Figures 6-8 As shown, the fixed assembly 4 includes a lifting plate 41, a movable wheel 42, a fixed foot 43, a connecting screw 44, a connecting worm gear 45, a crank handle 46, a worm wheel 47, a transmission gear 48, a transmission rack 49, and a counterweight 410. The lifting plate 41 and the fixed frame 1 are slidably connected. The movable wheel 42 is fastened to the bottom side of the lifting plate 41. The fixed foot 43 is fastened to the outer side wall of the fixed frame 1. The connecting screw 44 and the connecting worm gear 45 are fastened together. Rod 45 is rotatably connected to fixed frame 1. Connecting worm 45 is securely connected to crank handle 46. Worm wheel 47 is rotatably connected to the side wall of fixed frame 1. Worm wheel 47 is securely connected to transmission gear 48 and meshes with connecting worm 45. Transmission rack 49 is securely connected to lifting plate 41 and meshes with transmission rack 49. A screw nut is embedded inside counterweight 410, meshing with connecting screw 44. Counterweight 410 is slidably connected to partition plate. When moving the traction device, moving wheel 42 provides support and can push the traction device to move. When reaching the traction position, crank handle 46 rotates, causing connecting worm 45 to rotate. Connecting worm 45 then rotates worm wheel 47, which meshes with transmission rack 49, lifting transmission rack 49. Transmission rack 49 then moves lifting plate 41 upwards, and fixed foot 43 falls to the ground for support, thus lifting moving wheel 42. When the connecting worm gear 45 rotates, it drives the connecting lead screw 44 to rotate. The rotating lead screw 44 engages with the lead screw nut, which in turn moves the counterweight 410. The counterweight 410, originally positioned in the middle of the traction device, moves away from the side where the optical cable is pulled in when the traction device is switched to a fixed state. This invention, through flexible adjustment of the fixed state of the traction device, ensures both the flexibility of the traction device's movement and its stability. Furthermore, by adding a counterweight away from the pulling position during adjustment, it prevents the optical cable from tipping over due to excessive force on one side during traction.

[0033] like Figure 6 , Figure 7 As shown, the fixing component 4 also includes a load-bearing bracket 411. The load-bearing bracket 411 has two snap-fit ​​slots. The load-bearing bracket 411 is securely connected to the lifting plate 41. There are two sets of load-bearing brackets 411, respectively positioned near the sides of the lifting plate 41. The connecting screw 44 and connecting worm gear 45 are positioned as smooth rods near the fixing frame 1. The smooth rods of the connecting screw 44 and connecting worm gear 45 can be engaged into the snap-fit ​​slots. The engagement position of the load-bearing bracket 411 can be manually adjusted by adjusting the position of the lifting plate 41. The upper and lower positions of the lifting plate 41 correspond to the two snap-fit ​​slots respectively. The load-bearing bracket 411 engaging with the smooth rods reduces the load on the worm gear 47 and extends its service life.

[0034] The working principle of this invention is as follows: When the traction device is moved, the moving wheel 42 provides support and propels the traction device to move. When the traction position is reached, the crank handle 46 is turned, which drives the connecting worm gear 45 to rotate. The connecting worm gear 45 drives the worm wheel 47 to rotate, and the worm wheel 47 meshes with the transmission rack 49, lifting the transmission rack 49. The transmission rack 49 then moves the lifting plate 41 upward, and the fixed foot 43 falls to the ground to provide support, thus lifting the moving wheel 42. When the connecting worm gear 45 rotates, it drives the connecting screw 44 to rotate. When the connecting screw 44 rotates, it meshes with the screw nut, which drives the counterweight 410 to move. The counterweight 410 was originally in the middle position of the traction device. When the traction device is switched to a fixed state, the counterweight 410 moves away from the side where the optical cable is pulled in. The push cylinder 32 pushes the lower traction plate 22 upward, and the optical cable is clamped by the traction unit 23. The transmission wheel 234 rotates, driving the conveyor belt 235 to rotate, and the conveyor belt pulls the optical cable. Under the pressure of the optical cable, the surface of the conveyor belt 235 is concave inward, and the extrusion chamber 2372 is deformed. When the filling liquid is squeezed into the piston sleeve 2373, the pressure difference is transferred to the extrusion block 2374, which is pushed away from the piston sleeve 2373. The arc-shaped pressure block is designed to match the optical cable, and it presses the conveyor belt towards both sides of the optical cable. This pressure compensates for the pressure difference and reduces the difference in local friction. During the traction of the optical cable, the conveyor belt 235 is pressed against the surface of the supporting sheet metal 233. The conveyor belt 235 and the supporting sheet metal 233 generate heat through friction. At this time, the heat on the conveyor belt 235 is transferred to the tensioning wheel 2361. The half-sleeve 2362 of this invention is made of a heat-conducting material, which can transfer the temperature rise to the gas inside the sealed chamber. The gas expands due to heat, the sealed chamber elongates, the total length of the two half-sleeves 2362 decreases, the tension decreases, and the increase in friction is balanced.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fiber optic cable laying traction device, characterized in that: The traction device includes a fixed frame (1), a traction component (2), a compression component (3), and a fixing component (4). A partition plate is provided on the lower side of the fixed frame (1). One end of the traction component (2) is connected to the fixed frame (1), and the other end of the traction component (2) is connected to the compression component (3). The side of the compression component (3) away from the traction component (2) is fastened to the upper side of the partition plate. One end of the fixing component (4) is connected to the bottom of the partition plate, and the other end of the fixing component (4) is fastened to the fixed frame (1). The traction assembly (2) includes an upper traction plate (21), a lower traction plate (22), a traction unit (23), and a guide block (24). The upper traction plate (21) is fastened to the fixing frame (1), the lower traction plate (22) is fastened to the compression assembly (3), and the traction unit (23) is provided in two sets. The two sets of traction units (23) are fastened to the upper traction plate (21) and the lower traction plate (22) respectively. The guide block (24) is fastened to the fixing frame (1). The traction unit (23) includes a mounting box (231), a support frame (232), a support sheet metal (233), a transmission wheel (234), a conveyor belt (235), and a tensioning component (236). There are two sets of mounting boxes (231), which are respectively fastened to the upper traction plate (21) and the lower traction plate (22). One end of the support frame (232) is fastened to the mounting box (231), and the other end of the support frame (232) is connected to the transmission wheel (234). There are two transmission wheels (234), and the conveyor belt (235) is fitted on the two transmission wheels (234). The support sheet metal (233) is fastened to the support frame (232), and the tensioning component (236) is fastened to the support sheet metal (233). The conveyor belt (235) is internally embedded with pressure components (237). Multiple sets of pressure components (237) are evenly distributed along the conveyor belt (235). Each pressure component (237) includes a fixed frame (2371), a compression chamber (2372), a piston sleeve (2373), and a compression block (2374). The fixed frame (2371) is embedded inside the conveyor belt (235). The piston sleeve (2373) is securely connected to the fixed frame (2371). There are two sets of piston sleeves (2373), and the two sets of piston sleeves (2373) are respectively located on both sides of the inner wall of the fixed frame (2371). The extrusion chamber (2372) is located inside the fixed frame (2371) on the side away from the outer surface of the conveyor belt (235). The extrusion block (2374) and the piston sleeve (2373) are slidably connected. An arc-shaped pressure block is provided on the side of the extrusion block (2374) away from the piston sleeve (2373). Pipes are provided on both sides of the extrusion chamber (2372), and the pipes are connected to the inside of the piston sleeve (2373).

2. The optical cable laying and pulling device according to claim 1, characterized in that: The tensioning component (236) includes a tensioning wheel (2361), a half-sleeve (2362), a tension spring (2363), a hinge rod (2364), a support base (2365), and a slider (2366). The tensioning wheel (2361) and the half-sleeve (2362) are rotatably connected. There are two half-sleeves (2362), which are slidably connected. The overlapping area of ​​the two half-sleeves (2362) forms a sealed chamber. The tension spring (2363) is disposed inside the sealed chamber. 2363) is fastened to two half-sleeves (2362) at both ends respectively. One end of the support base (2365) is fastened to the support sheet metal (233). The other end of the support base (2365) is slidably connected to two half-sleeves (2362) respectively. There are two hinge rods (2364). One end of the two hinge rods (2364) is hinged to two half-sleeves (2362) respectively. The other end of the two hinge rods (2364) is hinged to the slider (2366). The slider (2366) is slidably connected to the support base (2365).

3. The optical cable laying and pulling device according to claim 2, characterized in that: The extrusion assembly (3) includes a telescopic rod (31) and a pusher cylinder (32). One end of the telescopic rod (31) is fastened to the partition plate, and the other end of the telescopic rod (31) is fastened to the lower traction plate (22). The pusher cylinder (32) is fastened to the partition plate, and the output shaft of the pusher cylinder (32) is fastened to the lower traction plate (22).

4. The optical cable laying and pulling device according to claim 3, characterized in that: The fixed assembly (4) includes a lifting plate (41), a moving wheel (42), a fixed foot (43), a connecting screw (44), a connecting worm gear (45), a crank handle (46), a worm wheel (47), a transmission gear (48), a transmission rack (49), and a counterweight (410). The lifting plate (41) and the fixed frame (1) are slidably connected. The moving wheel (42) is fastened to the bottom side of the lifting plate (41). The fixed foot (43) is fastened to the outer wall of the fixed frame (1). The connecting screw (44) and the connecting worm gear (45) are fastened together. (45) is rotatably connected to the fixed frame (1), the connecting worm (45) is fastened to the crank (46), the worm wheel (47) is rotatably connected to the side wall of the fixed frame (1), the worm wheel (47) is fastened to the transmission gear (48), the worm wheel (47) meshes with the connecting worm (45), the transmission rack (49) is fastened to the lifting plate (41), the lifting plate (41) meshes with the transmission rack (49), the counterweight (410) has a lead screw nut embedded inside, the lead screw nut meshes with the connecting lead screw (44), and the counterweight (410) is slidably connected to the partition plate.

5. The optical cable laying and pulling device according to claim 4, characterized in that: The fixing component (4) also includes a load-bearing bracket (411), which has two buckle slots. The load-bearing bracket (411) and the lifting plate (41) are fastened together. There are two sets of load-bearing brackets (411), which are respectively set on the lifting plate (41) near both sides. The connecting screw (44) and the connecting worm gear (45) are set as bare rods near the fixing frame (1).

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