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

Abstract

The present invention relates to an industrial low-smoke, halogen-free, fire-resistant, low-voltage cable applied in the field of cables, comprising a fire-resistant, low-voltage cable body, an outer end of the fire-resistant, low-voltage cable body being slidingly sleeved with an open bending sheath, and adopting a bending clamping split, an open bending sheath, a bending control strip and a bending control system to cooperate, which can effectively play the role of automatic bending control based on the parameters of the fire-resistant, low-voltage cable body, effectively identify and analyze the actual bending radius of the fire-resistant, low-voltage cable body according to the parameters of the fire-resistant, low-voltage cable body and the actual laying parameters, and adaptively adjust the actual bending radius, thereby effectively avoiding damage to the fire-resistant, low-voltage cable body during the bending construction process, ensuring the application performance of the fire-resistant, low-voltage cable body, and reducing the difficulty of laying the fire-resistant, low-voltage cable body and improving the laying efficiency through the role of automatic bending control, thereby promoting the application benefits of the fire-resistant, low-voltage cable body.

Description

Technical Field

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

[0002] Industrial low-smoke, halogen-free, fire-resistant, low-voltage cables are designed specifically for industrial environments. They are primarily used in power transmission and control systems, particularly where high safety and environmental protection requirements are crucial. Key features include low smoke, halogen-free, flame retardant, and fire resistance. Low smoke, halogen-free, means no toxic smoke or corrosive gases are released during combustion, while flame retardancy and fire resistance ensure the cable maintains integrity and uptime in the event of a fire.

[0003] During the installation of industrial low-smoke, halogen-free, fire-resistant, low-voltage cables, bending is often necessary due to routing and location constraints. However, currently, laying these cables relies primarily on manual labor. Given the cable's diameter and inherent compressive strength, bending often requires considerable force. Furthermore, precise control of the bend angle is difficult, and small bend angles can easily cause internal damage, impacting cable performance.

[0004] Chinese invention patent CN111293645B discloses a UPVC cable protection tube, comprising a first protection tube body, a second protection tube body, and a connector. The connector in the present invention can be adjusted to an angle greater than 90 degrees and less than or equal to 180 degrees, allowing the tube to be adjusted at multiple angles. The first and third annular stops ensure that the angle between the first and third sleeve tubes is greater than 90 degrees and less than or equal to 180 degrees. The second and fourth annular stops ensure that the angle between the third and second sleeve tubes is greater than 90 degrees and less than or equal to 180 degrees. This allows the cable to be bent at angles greater than 90 degrees, preventing damage to the cable. Adjustment is simple, the angle range is wide, and the tube has wide applicability.

[0005] While the patented technology can provide angle protection and adjustment for curved cables during installation, it has limitations: First, it cannot automatically adjust bends and precisely control angles based on the specific radius and performance characteristics of the cable; second, it cannot effectively collect data on the cable's bending state during subsequent use. These issues not only reduce the efficiency and accuracy of cable laying but also hinder the ability to monitor cable bends in real time, impacting the overall safety of the system. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to realize automatic bending control of the cable while maintaining real-time data collection of the bending state during subsequent use to ensure the safety of cable application.

[0007] In order to solve the above problems, the present invention provides an industrial low-smoke, halogen-free, fire-resistant, low-voltage cable, comprising a fire-resistant, low-voltage cable body, an outer end of the fire-resistant, low-voltage cable body being slidably sleeved with an open bending sheath, a pair of bending clamping splits being fixedly connected to the outer end of the fire-resistant, low-voltage cable body, and the two bending clamping splits are respectively located at the front and rear sides of the open bending sheath, the upper and lower ends of the two bending clamping splits are fixedly connected to a bending connecting rod, the upper and lower ends of the open bending sheath are fixedly connected to a bending core rod, a bending regulating strip is connected between the bending connecting rod and the bending core rod on the same side, and the bending regulating strip is rotatably connected to one end of the bending connecting rod, a bending fixed-point collar is fixedly connected to one end of the bending regulating strip close to the bending core rod, and the bending fixed-point collar is rotatably connected to the bending core rod;

[0008] The rear end of the bending clamping split body located at the rear side of the open bending sheath is fixedly connected to an induction cable bundle, the other end of the induction cable bundle is connected to a bending controller, and the bending controller is equipped with a bending control system. The bending control system includes a bending control processing unit, the input end of the bending control processing unit is connected to a cable data input unit, a layout parameter input unit, a bending angle setting unit, a bending instruction unit and a bending data acquisition unit, and the output end of the bending control processing unit is connected to a bending angle control unit, a bending state display unit and a bending indication unit;

[0009] The input ends of the cable data input unit, the layout parameter input end, the bending angle setting unit and the bending instruction unit are all connected to the button signal set on the bending controller, the input end of the bending data acquisition unit is connected to the pressure probe signal set in the bending control bar, the output end of the bending angle control unit is connected to the bending control bar signal, the output end of the bending status display unit is connected to the display signal set on the bending controller, and the input end of the bending indication unit is respectively connected to the indicator light signal set on the bending clamping split and the bending controller.

[0010] In the above-mentioned industrial low-smoke halogen-free fire-resistant low-voltage cable, it can effectively play the role of automatic bending control based on the parameters of the fire-resistant low-voltage cable body, effectively identify and analyze the actual bending radius of the fire-resistant low-voltage cable body according to the parameters of the fire-resistant low-voltage cable body and the actual laying parameters, and adaptively adjust the actual bending radius, thereby effectively avoiding damage to the fire-resistant low-voltage cable body during the bending construction process, ensuring the application performance of the fire-resistant low-voltage cable body, and can also reduce the difficulty of laying the fire-resistant low-voltage cable body and improve the laying efficiency through the role of automatic bending control, thereby promoting the application benefits of the fire-resistant low-voltage cable body.

[0011] As a supplement to this application, a bending control cavity is opened in the bending control strip, and the front and rear inner walls of the bending control cavity are fixedly connected with bending control electromagnetic blocks. A bending elastic support strip is fixedly connected between the front and rear bending control electromagnetic blocks. The input end of the bending data acquisition unit is connected to the signal of the pressure probe arranged in the bending control cavity, and the output end of the bending angle control unit is connected to the signal of the bending control electromagnetic block.

[0012] As a supplement to this application, a pair of waist grooves distributed up and down are provided at the outer end of the bending core rod, and the bending fixed point ring is sleeved on the waist groove and rotated with the bending core rod. A limiting arc groove is provided on the inner wall of the waist groove close to the open bending sleeve, and the bending fixed point ring is fixedly connected to the side of the open bending sleeve with a guide slide column extending into the limiting arc groove.

[0013] As a supplement to this application, the bending clamping split is composed of two hinged arc-shaped buckles, the inner walls of the two arc-shaped buckles are fixedly connected with a protective layer, and the two arc-shaped buckles are fastened by locking bolts.

[0014] As a further improvement of the present application, the front and rear ends of the open bending sheath are fixedly connected with open sheath guide blocks, the rear end of the front bending clamping split and the front side of the rear bending clamping split are fixedly connected with open clamping guide blocks, and the open sheath guide block and the open clamping guide block are both sleeved on the outside of the fire-resistant low-voltage cable body, the open diameter adjusting sleeve is fixedly connected between the open sheath guide block and the open clamping guide block on the front side of the open bending sheath and between the open sheath guide block and the open clamping guide block on the rear side of the open bending sheath, and the open diameter adjusting sleeve is sleeved on the outside of the fire-resistant low-voltage cable body, the output end of the bending control processing unit is also connected to the bending diameter adjustment control unit, and the output end of the bending diameter adjustment control unit is connected to the open diameter adjustment sleeve signal.

[0015] As a further improvement of the present application, a diameter adjusting cavity is provided in the open diameter adjusting sleeve, and diameter adjusting electromagnetic blocks are fixedly connected to the front and rear inner walls of the diameter adjusting cavity. A diameter adjusting support spring is fixedly connected between the front and rear diameter adjusting electromagnetic blocks, and the output end of the bending diameter adjusting control unit is connected to the diameter adjusting electromagnetic block signal.

[0016] As a further improvement of the present application, the open sheath guide block and the open clamping guide block are fixedly connected to a conductor rod at one end away from the fire-resistant low-voltage cable body, and the conductor rod is fixedly connected to a bending guide sleeve at one end away from the fire-resistant low-voltage cable body, and the bending guide sleeve sliding sleeve is arranged on the outside of the bending control strip.

[0017] As another improvement of the present application, a wiring harness port is provided on the bending controller, which is connected to the cable maintenance platform signal through a communication harness. The output end of the bending control processing unit is also connected to a bending abnormality alarm unit, and the output end of the bending abnormality alarm unit is connected to the cable maintenance platform signal through the cooperation of the wiring harness port and the communication harness.

[0018] In summary, through the cooperation of the bending clamping split, the open bending sheath, the bending control strip and the bending control system, it can effectively play the role of automatic bending control of the parameters of the fire-resistant low-voltage cable body, and effectively identify and analyze the actual bending radius of the fire-resistant low-voltage cable body according to the parameters of the fire-resistant low-voltage cable body and the actual laying parameters, and adaptively adjust the actual bending radius, thereby effectively avoiding damage to the fire-resistant low-voltage cable body during the bending construction process, ensuring the application performance of the fire-resistant low-voltage cable body, and reducing the difficulty of laying the fire-resistant low-voltage cable body and improving the laying efficiency through the role of automatic bending control, thereby promoting the application benefits of the fire-resistant low-voltage cable body, and also being able to perform real-time data monitoring of the bending state of the fire-resistant low-voltage cable body when it is put into use, and being able to sense the application state of the fire-resistant low-voltage cable body to ensure the safety and effectiveness of the bending of the fire-resistant low-voltage cable body, and ensure the safety and effectiveness of the continuous application of the fire-resistant low-voltage cable body, thereby effectively promoting the functionality and practicality of the fire-resistant low-voltage cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Axonometric drawings of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath according to the first and second embodiments of the present application;

[0020] Figure 2 This is a control logic diagram of the bending control system of the first and second embodiments of the present application;

[0021] Figure 3 Exploded diagram of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath according to the first and second embodiments of the present application;

[0022] Figure 4 A rear axonometric view of the bending clamping split, the open bending sheath, and the bending regulating strip in the first and second embodiments of the present application;

[0023] Figure 5 A top view of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath when not bent according to the first and second embodiments of the present application;

[0024] Figure 6 1 is a top cross-sectional view of the bending control strip according to the first and second embodiments of the present application;

[0025] Figure 7 A top view of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath when bent according to the first and second embodiments of the present application;

[0026] Figure 8 This is a top cross-sectional view of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath when bent according to the first and second embodiments of the present application;

[0027] Figure 9 This is a top view of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath when the diameter is not adjusted according to the first and second embodiments of the present application;

[0028] Figure 10 For the first and second embodiments of this application Figure 9 A partial enlarged view of the middle part;

[0029] Figure 11 A top view of the fire-resistant low-voltage cable body, the bending clamping split body, and the open bending sheath when adjusting the diameter of the first and second embodiments of the present application;

[0030] Figure 12 For the first and second embodiments of this application Figure 11 A partial enlarged view of point B in the middle.

[0031] Description of the numbers in the figure:

[0032] 1 fire-resistant low-voltage cable body, 2 bending clamping split, 21 bending connecting rod, 3 open bending sheath, 31 bending core rod, 4 open diameter adjusting sleeve, 401 diameter adjusting cavity, 402 diameter adjusting electromagnetic block, 403 diameter adjusting support spring, 41 open sheath guide block, 42 ​​open clamping guide block, 5 bending control strip, 501 bending control cavity, 502 bending control electromagnetic block, 503 bending elastic support strip, 51 bending fixed point ring, 6 bending guide clamp, 61 conductor rod. DETAILED DESCRIPTION

[0033] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] Figure 1 - Figure 11An industrial low-smoke, halogen-free, fire-resistant, low-voltage cable is shown, comprising a fire-resistant, low-voltage cable body 1. An open bending sheath 3 is slidingly sleeved on the outer end of the fire-resistant, low-voltage cable body 1. A protective cavity is provided in the open bending sheath 3, which is filled with an inert protective gas. A pair of bending clamping parts 2 are fixedly connected to the outer end of the fire-resistant, low-voltage cable body 1, and the two bending clamping parts 2 are respectively located on the front and rear sides of the open bending sheath 3. The upper and lower ends of the two bending clamping parts 2 are fixedly connected to a bending connecting rod 21, and the upper and lower ends of the open bending sheath 3 are fixedly connected to a bending core rod 31. A bending regulating strip 5 is connected between the bending connecting rod 21 and the bending core rod 31 on the same side, and the bending regulating strip 5 is rotatably connected to one end of the bending connecting rod 21. A bending fixed-point collar 51 is fixedly connected to the end of the bending regulating strip 5 close to the bending core rod 31, and the bending fixed-point collar 51 is rotatably connected to the bending core rod 31.

[0036] The rear end of the bending clamping split body 2 located at the rear side of the open bending sheath 3 is fixedly connected to an induction cable bundle, the other end of the induction cable bundle is connected to a bending controller, and the bending controller is equipped with a bending control system. The bending control system includes a bending control processing unit, the input end of the bending control processing unit is connected to a cable data input unit, a layout parameter input unit, a bending angle setting unit, a bending instruction unit and a bending data acquisition unit, and the output end of the bending control processing unit is connected to a bending angle control unit, a bending state display unit and a bending indication unit;

[0037] The input ends of the cable data input unit, the laying parameter input end, the bending angle setting unit and the bending instruction unit are all connected to the button signal provided on the bending controller, the input end of the bending data acquisition unit is connected to the pressure probe signal provided in the bending control strip 5, the output end of the bending angle control unit is connected to the bending control strip 5 signal, the output end of the bending state display unit is connected to the display signal provided on the bending controller, and the input end of the bending indication unit is respectively connected to the indicator light signal provided on the bending clamping split 2 and the bending controller. Through the cooperation of the bending clamping split 2, the open bending sheath 3, the bending control strip 5 and the bending control system, it can effectively play the role of automatic bending control of the parameters of the fire-resistant low-voltage cable body 1, and effectively adjust the parameters of the fire-resistant low-voltage cable body 1 according to the parameters of the actual laying. The actual bending radius of the fire-resistant low-voltage cable body 1 is identified and analyzed, and the actual bending radius is adaptively adjusted, thereby effectively avoiding damage to the fire-resistant low-voltage cable body 1 during the bending construction process, ensuring the application performance of the fire-resistant low-voltage cable body 1, and reducing the difficulty of laying the fire-resistant low-voltage cable body 1 and improving the laying efficiency through the function of automatic bending regulation, thereby promoting the application benefits of the fire-resistant low-voltage cable body 1, and also being able to perform real-time data monitoring of the bending state of the fire-resistant low-voltage cable body 1 when it is put into use, and being able to sense the application state of the fire-resistant low-voltage cable body 1 to ensure the safety and effectiveness of the bending of the fire-resistant low-voltage cable body 1, and ensure the safety and effectiveness of the continuous application of the fire-resistant low-voltage cable body 1, thereby effectively promoting the functionality and practicality of the fire-resistant low-voltage cable body 1.

[0038] Figure 6 It is shown that a bending control cavity 501 is opened in the bending control strip 5, and a magnetic isolation layer is coated in the bending control cavity 501. The front and rear inner walls of the bending control cavity 501 are fixedly connected with bending control electromagnetic blocks 502. A bending elastic support strip 503 is fixedly connected between the front and rear bending control electromagnetic blocks 502. The input end of the bending data acquisition unit is connected to the signal of the pressure probe arranged in the bending control cavity 501, and the output end of the bending angle control unit is connected to the signal of the bending control electromagnetic block 502. The cooperation between the bending control electromagnetic block 502 and the bending angle control unit can effectively realize the bending of the fire-resistant low-voltage cable body 1. The automatic control function of the machine can improve the bending accuracy and promote the construction efficiency, and can also effectively reduce the damage to the fire-resistant low-voltage cable body 1 during the bending process, thereby ensuring the safety and effectiveness of the subsequent continuous application and operation of the fire-resistant low-voltage cable body 1. In addition, the cooperation of the bending data acquisition unit and the pressure probe can continuously monitor the bending position of the fire-resistant low-voltage cable body 1 during its operation, and can timely detect the damage to the bending position of the fire-resistant low-voltage cable body 1, which can promote the efficiency of subsequent maintenance of the bending position of the fire-resistant low-voltage cable body 1 and ensure the stability of the continuous operation of the fire-resistant low-voltage cable body 1.

[0039] Figure 1 - Figure 11 The bending core rod 31 is shown to have a pair of waist grooves distributed up and down at the outer end thereof, the bending fixed point collar 51 is sleeved on the waist groove and is rotatably matched with the bending core rod 31, the two bending regulating strips 5 located on the same side are distributed up and down, the waist groove is provided with a limited arc groove on the inner wall near the side of the opening bending sheath 3, the bending fixed point collar 51 is fixedly connected to a guide slide column extending into the limited arc groove on the side near the opening bending sheath 3, when the bending regulating strip 5 is in a fully extended state, the guide slide column is located at the limit position of the limited arc groove, and when the subsequent bending regulating strip 5 produces a contraction deformation, it can Under the restriction of the sliding column and the limiting arc groove, the bending control strip 5 drives the fire-resistant low-voltage cable body 1 to produce bending control, and the bending direction of the fire-resistant low-voltage cable body 1 is the opening direction of the back-bending clamping split 2 and the open bending sheath 3. The rotational coordination of the bending fixed point ring 51 and the bending core rod 31 can effectively realize the effectiveness of the bending control strip 5 on the bending control of the fire-resistant low-voltage cable body 1. The guide sliding column and the limiting arc groove can realize the guidance and restriction of the bending direction of the fire-resistant low-voltage cable body 1 driven by the contraction of the bending control strip 5, thereby promoting the effectiveness of the bending control.

[0040] Figure 1 - Figure 11 It is shown that the bending clamping split 2 is composed of two hinged arc buckles, and the inner walls of the two arc buckles are fixedly connected with a protective layer. The two arc buckles are fastened and fixed by locking bolts. Through the opening characteristics of the bending clamping split 2 and the open bending sheath 3, the adaptability to the bending position of the fire-resistant low-voltage cable body 1 can be effectively achieved, and a detachable combination effect can be formed for the fire-resistant low-voltage cable body 1. While promoting the bending accuracy of the fire-resistant low-voltage cable body 1 and reducing bending damage, it can also effectively reduce the application cost of the fire-resistant low-voltage cable body 1. When the fire-resistant low-voltage cable body 1 is damaged and needs to be replaced, the bending clamping split 2 and the open bending sheath 3 can be reused continuously, thereby effectively promoting the economic benefits of the fire-resistant low-voltage cable body 1.

[0041] Figure 2It is shown that the bending controller is provided with a wiring harness port, which is connected to the cable maintenance platform signal through a communication harness. The output end of the bending control processing unit is also connected to a bending abnormality alarm unit. The output end of the bending abnormality alarm unit is connected to the cable maintenance platform signal through the cooperation of the wiring harness port and the communication harness. The bending controller can be movable when the fire-resistant low-voltage cable body 1 is laid and installed. While controlling the bending of the fire-resistant low-voltage cable body 1 at the construction site, it can also directly form a signal with the cable maintenance platform after the fire-resistant low-voltage cable body 1 is used, which plays a role in data monitoring of the bending position of the fire-resistant low-voltage cable body 1, effectively improving the monitoring and maintenance efficiency of the abnormality of the fire-resistant low-voltage cable body 1, and ensuring the application safety of the fire-resistant low-voltage cable body 1.

[0042] Figure 1 - Figure 11 It is shown that before laying the fire-resistant low-voltage cable body 1, the construction personnel input relevant parameter data into the cable data input unit, the laying parameter input unit and the bending angle setting unit through the control buttons on the bending controller, and input relevant parameter data such as the wire diameter, length, armoring parameters and material properties of the fire-resistant low-voltage cable body 1 into the bending control processing unit through the cable data input unit. The laying line of the fire-resistant low-voltage cable body 1 of this laying construction plan, the number of required bending laying, the bending laying mark and the bending laying sequence and other relevant laying data are input into the bending control processing unit through the laying parameter input unit. The required bending angle at each bending laying mark position and relevant standard data on cable bending are input into the bending control processing unit through the bending angle setting unit. The bending control processing unit analyzes and processes the received data, and then calculates the bending control data of each bending laying mark position.

[0043] After the construction workers have laid the fire-resistant low-voltage cable body 1 to the position where it needs to be bent, they use the two arc-shaped buckles of the bending clamping split 2 to clamp it on the outside of the fire-resistant low-voltage cable body 1 according to the bending position, and distribute the two bending clamping splits 2 on both sides of the required bending inflection point of the fire-resistant low-voltage cable body 1, use the opening of the open bending sheath 3 to put the open bending sheath 3 on the outside of the fire-resistant low-voltage cable body 1, and put the open bending sheath 3 on the required bending inflection point of the fire-resistant low-voltage cable body 1, and make the opening directions of the bending clamping split 2 and the open bending sheath 3 face back to the required bending direction of the fire-resistant low-voltage cable body 1, and then fix the arc-shaped buckle of the bending clamping split 2 by the locking bolt, completing the bending clamping split 2, the open bending sheath 3 and the fire-resistant The fire-resistant low-voltage cable body 1 is combined, and then the bending clamping split 2 and the bending controller are connected through the induction cable bundle. The construction personnel input the bending instruction to the bending instruction unit through the button on the bending controller. After receiving the instruction, the bending control processing unit sends an angle instruction to the bending angle control unit, so that the bending control electromagnetic block 502 is turned on to generate current to generate magnetic effect, and the two bending control electromagnetic blocks 502 located in the same bending control cavity 501 are controlled to generate an electromagnetic force of attraction. The magnetic force of attraction will drive the bending elastic support bar 503 and the bending control bar 5 to produce contraction deformation, so that the bending control bar 5 can pull the fire-resistant low-voltage cable body 1 located on both sides of the open bending sheath 3 through the bending connecting rod 21, and at the bending core rod 3 1 and the rotational cooperation of the bending fixed point ring 51 and the limiting guidance of the guide slide column and the limiting arc groove can effectively make the contraction of the bending control strip 5 drive the fire-resistant low-voltage cable body 1 to produce a bending effect through the bending clamping split 2. During the bending process, the construction personnel can fix the middle position of the bending clamping split 2, which can effectively promote the efficiency and effect of the bending control. The bending control processing unit will also control the indicator light through the bending indication unit to generate a light reminder, and remind the construction personnel of the state of the bending control through the change of the light. Before the bending control starts, the light is red, the light is flashing during the bending process, and the light is green after the bending is completed. After the bending control is completed, the bending control processing unit controls the bending angle The unit maintains the current size of the bending control electromagnetic block 502 at the secondary mark position, keeps its electromagnetic contraction effect constant, maintains the bending angle of the fire-resistant low-voltage cable body 1, and the open bending sheath 3 will provide outer protection for the fire-resistant low-voltage cable body 1, reducing the damage caused to the fire-resistant low-voltage cable body 1 during the bending process. The construction personnel then lay and set the fire-resistant low-voltage cable body 1 after the bending is completed, and then perform the same control on the fire-resistant low-voltage cable body 1 in the entire laying scene according to the bending laying mark in the above manner. In the process of sequential control, the bending control processing unit also displays the bending state of the fire-resistant low-voltage cable body 1 at each bending laying mark position on the display of the bending controller through the bending state display unit.This allows construction personnel to monitor and judge the construction process, arrange and adjust construction work in a timely manner, and effectively improve the efficiency of laying the fire-resistant low-voltage cable body 1 while reducing construction difficulty, thereby promoting construction benefits.

[0044] After the construction is completed and the fire-resistant low-voltage cable body 1 is put into use, the bending controller is connected to the cable maintenance platform through a communication harness, so that the bending data acquisition unit can collect the bending status data of the fire-resistant low-voltage cable body 1 in real time through the pressure probe set in the bending control cavity 501, and then transmit the data to the bending control processing unit. The bending control processing unit judges the pressure data. When it is judged that the pressure data change is within the standard range, it means that the bending position of the fire-resistant low-voltage cable body 1 is normal. When the pressure increases beyond the standard range, it is judged that the bending position of the fire-resistant low-voltage cable body 1 may be subjected to extrusion, and then the abnormal data and the location data of the abnormal data are transmitted to the cable maintenance platform through the bending abnormality alarm unit, so that subsequent cable maintenance personnel can process the abnormal data in time and perform maintenance on the fire-resistant low-voltage cable body 1. When the pressure decreases beyond the standard range, it is judged that the bending control strip 5 has a failure abnormality of contraction restriction, and then the abnormal data and the location data of the abnormal data are transmitted to the cable maintenance platform through the bending abnormality alarm unit, so that subsequent cable maintenance personnel can process the abnormal data in time, effectively ensuring the safety and stability of the continuous application of the fire-resistant low-voltage cable body 1.

[0045] When the bending position of the fire-resistant low-voltage cable body 1 needs to be replaced later, the bending clamping split 2 and the open bending sheath 3 can be removed and reinstalled on the new fire-resistant low-voltage cable body 1, and the bending controller can be taken out from the cable maintenance platform. The button and bending instruction unit on it are used to input the bending instruction of the fire-resistant low-voltage cable body 1 at the marked position to the bending control processing unit, so that the bending control processing unit acts on the bending control electromagnetic block 502 through the bending angle control unit according to the record during laying, and performs bending control on the new fire-resistant low-voltage cable body 1. This not only can maintain the repeated recycling of the bending clamping split 2 and the open bending sheath 3 during replacement, reducing the maintenance cost of the fire-resistant low-voltage cable body 1, but also can effectively perform direct bending control on the fire-resistant low-voltage cable body 1 through the original laying record, reducing the maintenance difficulty, promoting maintenance efficiency, effectively shortening the time when the fire-resistant low-voltage cable body 1 is interrupted, and reducing the economic losses caused by the interruption of the fire-resistant low-voltage cable body 1.

[0046] Second implementation method:

[0047] Figure 1 - Figure 11An industrial low-smoke, halogen-free, fire-resistant, low-voltage cable is shown. The front and rear ends of the open curved sheath 3 are fixedly connected to open sheath guide blocks 41. The rear end of the front curved clamping split 2 and the front side of the rear curved clamping split 2 are fixedly connected to open clamping guide blocks 42, and the open sheath guide blocks 41 and the open clamping guide blocks 42 are both sleeved on the outside of the fire-resistant low-voltage cable body 1. An open diameter adjusting sleeve 4 is fixedly connected between the open sheath guide block 41 and the open clamping guide block 42 on the front side of the open curved sheath 3 and between the open sheath guide block 41 and the open clamping guide block 42 on the rear side of the open curved sheath 3, and the open diameter adjusting sleeve 4 is sleeved on the outside of the fire-resistant low-voltage cable body 1. On the other hand, the opening direction of the open diameter adjusting sleeve 4 is consistent with the open bending sheath 3, and the output end of the bending control processing unit is also connected to the bending diameter adjustment control unit, and the output end of the bending diameter adjustment control unit is connected to the open diameter adjusting sleeve 4 signal. The cooperation of the bending diameter adjustment control unit and the open diameter adjusting sleeve 4 can realize the regulation of the outer diameter of the open bending sheath 3, and then through the control of the outer diameter of the open bending sheath 3, the adaptability protection of the bending part of the fire-resistant low-voltage cable body 1 can be performed. When the bending angle is small, it plays a thickening protection role, which can effectively support the bending position of the fire-resistant low-voltage cable body 1 and avoid damage to the fire-resistant low-voltage cable body 1 caused by the bending distance.

[0048] Figure 10 It is shown that a diameter adjusting cavity 401 is provided in the open diameter adjusting sleeve 4, and the diameter adjusting cavity 401 is coated with a magnetic isolation layer. The front and rear inner walls of the diameter adjusting cavity 401 are fixedly connected with diameter adjusting electromagnetic blocks 402, and a diameter adjusting support spring 403 is fixedly connected between the front and rear diameter adjusting electromagnetic blocks 402. The output end of the bending diameter adjusting control unit is connected to the diameter adjusting electromagnetic block 402 signal. The setting of the diameter adjusting electromagnetic block 402 can realize the automatic control of the diameter increasing effect of the open bending sheath 3, further improve the degree of automation in the bending and laying process of the fire-resistant low-voltage cable body 1, promote construction efficiency, and also can play an efficient protection role in the bending inflection point position of the fire-resistant low-voltage cable body 1 by adjusting the outer diameter of the open bending sheath 3 when the bending position of the fire-resistant low-voltage cable body 1 is abnormal during the application of the fire-resistant low-voltage cable body 1, thereby gaining effective time for subsequent maintenance and reducing the economic losses caused by damage to the fire-resistant low-voltage cable body 1.

[0049] Figure 1 - Figure 11It is shown that the open sheath guide block 41 and the open clamping guide block 42 are fixedly connected to the conductor rod 61 at one end away from the fire-resistant low-voltage cable body 1, and the conductor rod 61 is fixedly connected to the end away from the fire-resistant low-voltage cable body 1. The bending guide sleeve 6 is slidably sleeved on the outside of the bending control strip 5. The setting of the bending guide sleeve 6 and the conductor rod 61 can guide and limit the bending shape of the bending control strip 5, so that it can accompany the bending effect of the fire-resistant low-voltage cable body 1, reduce the space occupancy rate of the bending control strip 5 during the subsequent laying process of the fire-resistant low-voltage cable body 1, save laying space, and improve the utilization rate of laying space.

[0050] Figure 1 - Figure 11 It is shown that after the bending control processing unit receives the relevant data about the laying of the fire-resistant low-voltage cable body 1 through the cable data input unit, the laying parameter input unit and the bending angle setting unit, according to the different requirements of the bending angle of the fire-resistant low-voltage cable body 1 at different bending laying marks, before controlling the fire-resistant low-voltage cable body 1 at the marked position to bend, a diameter adjustment instruction will be sent to the bending diameter adjustment control unit, so that current is passed into the diameter adjustment electromagnetic block 402 to generate electromagnetic action, and the two diameter adjustment electromagnetic blocks 402 located in the same diameter adjustment cavity 401 produce repulsive electromagnetic action, and then the open diameter adjustment sleeve 4 can be driven to produce elongation deformation through the electromagnetic repulsion force, causing the open bending sheath 3 to produce contraction deformation under the action of the open diameter adjustment sleeves 4 at both ends. During the continuous shrinkage of the open curved sheath 3, the inert protective gas inside it will act on the protective cavity, causing the open curved sheath 3 to produce continuous diameter increase deformation, thereby being able to increase the diameter protection of the inflection point of the fire-resistant low-voltage cable body 1, slowing down its bending degree, and avoiding internal damage to the fire-resistant low-voltage cable body 1 at the bending inflection point due to the small bending angle, thereby effectively achieving the effect of protecting the fire-resistant low-voltage cable body 1. The smaller the angle of the laid bent fire-resistant low-voltage cable body 1, the greater the shrinkage deformation of the open curved sheath 3 and the larger the outer diameter, thereby being able to protect the minimum turning angle of the bending inflection point of the fire-resistant low-voltage cable body 1, reducing the bending damage of the fire-resistant low-voltage cable body 1, and ensuring the stability of its performance in subsequent applications.

[0051] During the subsequent application of the fire-resistant low-voltage cable body 1, the bending control processing unit receives the pressure data transmitted by the bending data acquisition unit, and when it is determined that the pressure at the bending position of the fire-resistant low-voltage cable body 1 increases, while transmitting the abnormal data to the bending abnormality alarm unit, it also sends a control instruction to the bending diameter adjustment control unit, so that it increases the current passing into the diameter adjustment electromagnetic block 402, further promoting the shrinkage and diameter increase effect of the open bending sheath 3, while isolating and supporting the pressure of the fire-resistant low-voltage cable body 1, it can also block the continuous bending deformation of the fire-resistant low-voltage cable body 1, avoid the fire-resistant low-voltage cable body 1 from being bent at right angles and causing direct damage to the fire-resistant low-voltage cable body 1, and gain effective maintenance time for the cable maintenance personnel, thereby effectively reducing the economic losses caused by bending damage at the fire-resistant low-voltage cable body 1.

Claims

1. An industrial low-smoke, halogen-free, fire-resistant, low-voltage cable, characterized by: The invention comprises a fire-resistant low-voltage cable body (1), wherein the outer end of the fire-resistant low-voltage cable body (1) is slidably sleeved with an open bending sheath (3), the outer end of the fire-resistant low-voltage cable body (1) is fixedly connected with a pair of bending clamping splits (2), and the two bending clamping splits (2) are respectively located at the front and rear sides of the open bending sheath (3), the upper and lower ends of the two bending clamping splits (2) are fixedly connected with a bending connecting rod (21), the upper and lower ends of the open bending sheath (3) are fixedly connected with a bending core rod (31), a bending regulating strip (5) is connected between the bending connecting rod (21) and the bending core rod (31) located on the same side, and the bending regulating strip (5) is rotatably connected to one end of the bending connecting rod (21), and the bending regulating strip (5) is fixedly connected to a bending fixed point ring (51) at one end close to the bending core rod (31), and the bending fixed point ring (51) is rotatably connected to the bending core rod (31); The rear end of the bending clamping split body (2) located at the rear side of the open bending sheath (3) is fixedly connected to an induction cable bundle, and the other end of the induction cable bundle is connected to a bending controller, and the bending controller is equipped with a bending control system, and the bending control system includes a bending control processing unit, the input end of the bending control processing unit is connected to a cable data input unit, a layout parameter input unit, a bending angle setting unit, a bending instruction unit and a bending data acquisition unit, and the output end of the bending control processing unit is connected to a bending angle control unit, a bending state display unit and a bending indication unit; The input ends of the cable data input unit, the layout parameter input unit, the bending angle setting unit and the bending instruction unit are all connected to the button signal provided on the bending controller, the input end of the bending data acquisition unit is connected to the pressure probe signal provided in the bending control bar (5), the output end of the bending angle control unit is connected to the bending control bar (5) signal, the output end of the bending state display unit is connected to the display signal provided on the bending controller, and the input end of the bending indication unit is respectively connected to the indicator light signal provided on the bending clamping split (2) and the bending controller.

2. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: A bending control chamber (501) is provided in the bending control strip (5), and the front and rear inner walls of the bending control chamber (501) are both fixedly connected with bending control electromagnetic blocks (502), and a bending elastic support strip (503) is fixedly connected between the front and rear bending control electromagnetic blocks (502). The input end of the bending data acquisition unit is connected to a pressure probe signal provided in the bending control chamber (501), and the output end of the bending angle control unit is connected to a bending control electromagnetic block (502) signal.

3. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The outer end of the bending core rod (31) is provided with a pair of waist grooves distributed in an upper and lower direction. The bending fixed point collar (51) is sleeved on the waist groove and is rotatably matched with the bending core rod (31). The inner wall of the waist groove close to the open bending sleeve (3) is provided with a limited arc groove. The side of the bending fixed point collar (51) close to the open bending sleeve (3) is fixedly connected with a guide slide column extending into the limited arc groove.

4. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The front and rear ends of the open bending sheath (3) are fixedly connected with an open sheath guide block (41), the rear end of the bending clamping split body (2) located on the front side and the front side of the bending clamping split body (2) located on the rear side are fixedly connected with an open clamping guide block (42), and the open sheath guide block (41) and the open clamping guide block (42) are both sleeved on the outside of the fire-resistant low-voltage cable body (1), between the open sheath guide block (41) and the open clamping guide block (42) located on the front side of the open bending sheath (3) and between the open sheath guide block (41) and the open clamping guide block (42) located on the rear side of the open bending sheath (3) are fixedly connected with an open diameter adjustment sleeve (4), and the open diameter adjustment sleeve (4) is sleeved on the outside of the fire-resistant low-voltage cable body (1), and the output end of the bending control processing unit is also connected with a bending diameter adjustment control unit, and the output end of the bending diameter adjustment control unit is signal-connected to the open diameter adjustment sleeve (4).

5. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 4, characterized in that: A diameter adjustment cavity (401) is provided in the open diameter adjustment sleeve (4), and diameter adjustment electromagnetic blocks (402) are fixedly connected to the front and rear inner walls of the diameter adjustment cavity (401), and a diameter adjustment support spring (403) is fixedly connected between the front and rear diameter adjustment electromagnetic blocks (402), and the output end of the bending diameter adjustment control unit is signal-connected to the diameter adjustment electromagnetic block (402).

6. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 4, characterized in that: The open sheath guide block (41) and the open clamping guide block (42) are both fixedly connected to a conductor rod (61) at one end away from the fire-resistant low-voltage cable body (1), and the conductor rod (61) is fixedly connected to a bending guide sleeve (6) at one end away from the fire-resistant low-voltage cable body (1), and the bending guide sleeve (6) is slidably sleeved on the outside of the bending control strip (5).

7. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The curved clamping body (2) is composed of two hinged arc-shaped buckles, the inner walls of the two arc-shaped buckles are fixedly connected with a protective layer, and the two arc-shaped buckles are fastened and fixed by locking bolts.

8. The industrial low-smoke, halogen-free, fire-resistant, low-voltage cable according to claim 1, characterized in that: The bending controller is provided with a wiring harness port, which is connected to the cable maintenance platform signal through a communication harness. The output end of the bending control processing unit is also connected to a bending abnormality alarm unit, and the output end of the bending abnormality alarm unit is connected to the cable maintenance platform signal through the cooperation of the wiring harness port and the communication harness.

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