Industrial low-smoke halogen-free fireproof low-voltage cable

Abstract

The invention relates to an industrial low-smoke halogen-free fire-resistant low-voltage cable applied to the field of cables, which comprises a fire-resistant low-voltage cable body, the outer end of the fire-resistant low-voltage cable body is sleeved with an opening bending sheath in a sliding manner, and a bending clamping split body, the opening bending sheath, a bending regulation and control strip and a bending regulation and control system are adopted to be matched. The automatic bending regulation and control function of the self-adaptive fire-resistant low-voltage cable body parameters can be effectively achieved, the actual bending radius of the fire-resistant low-voltage cable body is effectively recognized and analyzed according to the fire-resistant low-voltage cable body parameters and the actual laying parameters, self-adaptive regulation is conducted on the actual bending radius, and the self-adaptive fire-resistant low-voltage cable body bending regulation and control function is achieved. Therefore, the fire-resistant low-voltage cable body is effectively prevented from being damaged in the bending construction process, the application performance of the fire-resistant low-voltage cable body is ensured, the laying difficulty of the fire-resistant low-voltage cable body can be reduced and the laying efficiency can be improved through the automatic bending regulation and control effect, and the application benefit of the fire-resistant low-voltage cable body is further promoted.

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 applied in the cable field. Background Art

[0002] Industrial low-smoke halogen-free fire-resistant low-voltage cable is a cable designed for industrial environments. It is mainly used in power transmission and control systems, especially in situations where high safety and environmental protection requirements are required. The main features include low smoke, halogen-free, flame retardant and fire resistant. Low smoke and halogen-free means that no toxic smoke and corrosive gases will be released when burning, while flame retardant and fire resistant ensure that the cable can maintain a certain integrity and operating time in the event of a fire.

[0003] During the laying process of industrial low-smoke, halogen-free, fire-resistant, low-voltage cables, the cables often need to be bent due to the limitations of the laying lines and locations. However, the laying of these cables currently relies mainly on manual operations. Given the cable diameter and its own compressive strength, a large force is usually required to regulate the bending. In addition, the bending angle is difficult to control accurately. When the bending angle is small, it is very easy to cause internal damage, thus affecting the performance of the cable.

[0004] The specification of Chinese invention patent CN111293645B discloses a UPVC cable protection tube, which includes a first protection tube body, a second protection tube body and a connector. The angle of the connector in the present invention is greater than 90 degrees and less than or equal to 180 degrees, so that the protection tube can be adjusted at multiple angles. The first annular stopper and the third annular stopper make the angle between the first sleeve tube and the third sleeve tube greater than 90 degrees and less than or equal to 180 degrees. The second annular stopper and the fourth annular stopper make the angle between the third sleeve tube and the second sleeve tube greater than 90 degrees and less than or equal to 180 degrees, so that the cable bending angle can be greater than 90 degrees, avoiding damage to the cable, and the adjustment is simple, the adjustment angle range is large, and it has wide applicability.

[0005] Although the above patented technology can provide angle protection and adjustment functions for bent cables during the cable laying construction phase, it has limitations: first, the technology cannot achieve automatic bending regulation and precise angle control based on the specific radius and performance characteristics of the cable; second, it cannot effectively collect data on the bending state during the subsequent use of the cable. These problems not only reduce the efficiency and accuracy of cable laying, but also hinder the ability to monitor the bending parts of the cable in real time, thereby affecting the safety level of the entire 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 open bending sheath is slidably sleeved on the outer end of the fire-resistant low-voltage cable body, a pair of bending clamping splits are 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 bending connecting rods, 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, and 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 with an induction cable bundle, and the other end of the induction cable bundle is connected with a bending controller. 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 with 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 with 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 command 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 signals 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 regulation of 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 regulation, thereby promoting the application benefits of the fire-resistant low-voltage cable body.

[0011] As a supplement to the present 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, and 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 the present application, a pair of waist grooves distributed up and down are provided at the outer end of the bending core rod, the bending fixed point ring is sleeved on the waist groove and rotatably cooperates with the bending core rod, a limited arc groove is provided on the inner wall of the waist groove close to the open bending sleeve side, and the bending fixed point ring is fixedly connected to a guide slide column extending into the limited arc groove on the side close to the open bending sleeve.

[0013] As a supplement to the present application, the bending clamping split body 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.

[0014] As a further improvement of the present application, the front and rear ends of the open bending sheath are fixedly connected with opening 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 opening clamping guide blocks, and the opening sheath guide block and the opening clamping guide block are both sleeved on the outside of the fire-resistant low-voltage cable body, the opening diameter adjustment sleeve is fixedly connected between the opening sheath guide block and the opening clamping guide block on the front side of the open bending sheath and between the opening sheath guide block and the opening clamping guide block on the rear side of the open bending sheath, and the opening diameter adjustment sleeve is sleeved on the outside of the fire-resistant low-voltage cable body, 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 opening 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, and 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 the 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 coordination 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, 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 when the fire-resistant low-voltage cable body is put into use, its bending state can be monitored in real time, and the application state of the fire-resistant low-voltage cable body can be sensed 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 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;

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

[0021] Figure 3 This is an exploded view 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 diagram of the bending clamping split body, the open bending sheath and the bending regulating strip in the first and second embodiments of the present application;

[0023] Figure 5 It is 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 It is a top view cross-sectional view of the bending control strip of the first and second embodiments of the present application;

[0025] Figure 7 It is 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 It is 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;

[0027] Fig. 9 It 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 in the first and second embodiments of the present application;

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

[0029] Fig.11 It is 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 in the first and second embodiments of the present application;

[0030] Fig.12 For the first and second embodiments of this application Fig.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 opening bending sheath, 31 bending core rod, 4 opening diameter adjusting sleeve, 401 diameter adjusting cavity, 402 diameter adjusting electromagnetic block, 403 diameter adjusting support spring, 41 opening sheath guide block, 42 ​​opening clamping guide block, 5 bending regulating strip, 501 bending regulating cavity, 502 bending regulating electromagnetic block, 503 bending elastic support strip, 51 bending fixed point ring, 6 bending guide sleeve, 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 - Fig.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 slidably 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, and the protective cavity 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 at 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, 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 rotationally connected to one end of the bending connecting rod 21, and the bending regulating strip 5 is fixedly connected to one end of the bending regulating strip 5 close to the bending core rod 31, and the bending fixed point ring 51 is rotationally 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 with an induction cable bundle, and the other end of the induction cable bundle is connected with 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, and the input end of the bending control processing unit is connected with 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 with 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 command unit are all connected to the button signal arranged on the bending controller, the input end of the bending data acquisition unit is connected to the pressure probe signal arranged 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 arranged on the bending controller, and the input end of the bending indication unit is respectively connected to the indicator light signal arranged on the bending clamping split body 2 and the bending controller. Through the cooperation of the bending clamping split body 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 parameters. 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 through the role of automatic bending regulation, thereby improving the laying efficiency, thereby promoting the application benefits of the fire-resistant low-voltage cable body 1, and when the fire-resistant low-voltage cable body 1 is put into use, its bending state can be monitored in real time, and the application state of the fire-resistant low-voltage cable body 1 can be sensed 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 provided 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, 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 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 the 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 - Fig.11 The outer end of the bending core rod 31 is shown to have a pair of waist grooves distributed up and down, the bending fixed point collar 51 is sleeved on the waist groove and rotatably cooperates with the bending core rod 31, the two bending regulating strips 5 located on the same side are distributed up and down, and the inner wall of the waist groove close to the open bending sheath 3 is provided with a limited arc groove, and the side of the bending fixed point collar 51 close to the open bending sheath 3 is fixedly connected with a guide slide column extending into the limited arc groove. 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. When the subsequent bending regulating strip 5 contracts and deforms, 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 guiding and limiting effect on 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 - Fig.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 of 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 repeatedly and continuously used, thereby effectively promoting the economic benefits of the fire-resistant low-voltage cable body 1.

[0041] Figure 2It is shown that a wiring harness port is opened on the bending controller, and the wiring harness port is connected to the cable maintenance platform signal through the communication harness. The output end of the bending control processing unit is also connected to the 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 during the laying and installation of the fire-resistant low-voltage cable body 1. 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, so as to monitor the data of the bending position of the fire-resistant low-voltage cable body 1, effectively improve the monitoring and maintenance efficiency of the abnormality of the fire-resistant low-voltage cable body 1, and ensure the application safety of the fire-resistant low-voltage cable body 1.

[0042] Figure 1 - Fig.11 It is shown that before laying the fire-resistant low-voltage cable body 1, the construction personnel input relevant parameter data to the cable data input unit, the laying parameter input unit and the bending angle setting unit through the control button 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 to the bending control processing unit through the cable data input unit, and input relevant laying data such as the laying line of the fire-resistant low-voltage cable body 1 of this laying construction plan, the number of bending laying required, the marking of the bending laying and the bending laying sequence to the bending control processing unit through the laying parameter input unit, and input the required bending angle at each bending laying mark position and relevant standard data about cable bending to 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 personnel have laid the fire-resistant low-voltage cable body 1 to the position where bending is required, the construction personnel 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 set the open bending sheath 3 on the outside of the fire-resistant low-voltage cable body 1, and the open bending sheath 3 is set at the required bending inflection point of the fire-resistant low-voltage cable body 1, and the opening directions of the bending clamping split 2 and the open bending sheath 3 are opposite 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 command to the bending command unit through the button on the bending controller. After receiving the command, the bending control processing unit sends an angle command 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 electromagnetic force of attraction. The magnetic force of attraction will drive the bending elastic support strip 503 and the bending control strip 5 to produce contraction deformation, so that the bending control strip 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 body 2. During the bending process, the construction personnel can fix the middle position of the bending clamping split body 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 in a red state, the light is in a flashing state during the bending process, and the light is in a green state 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 marking 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, reduce the damage to the fire-resistant low-voltage cable body 1 during the bending process, and then the construction personnel will lay and set the fire-resistant low-voltage cable body 1 after the bending is completed, and then sequentially 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 promote the construction efficiency of the fire-resistant low-voltage cable body 1 while reducing the 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 the 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 changes 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 at this time, and then the abnormal data and the position data of the abnormal data are transmitted to the cable maintenance platform through the bending abnormal alarm unit, so that the 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 shrinkage restriction at this time, and then the abnormal data and the position data of the abnormal data are transmitted to the cable maintenance platform through the bending abnormal alarm unit, so that the 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 body 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 command unit on it can be used to input the bending command 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 allows the bending clamping split body 2 and the open bending sheath 3 to be reused during replacement, thereby reducing the maintenance cost of the fire-resistant low-voltage cable body 1, but also allows the fire-resistant low-voltage cable body 1 to be directly bent and controlled effectively through the original laying records, thereby reducing the difficulty of maintenance, 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 - Fig.11An industrial low-smoke, halogen-free, fire-resistant, low-voltage cable is shown, wherein both front and rear ends of the open curved sheath 3 are fixedly connected with open sheath guide blocks 41, the rear end of the front curved clamping split body 2 and the front side of the rear curved clamping split body 2 are fixedly connected with 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, and an open diameter adjustment sleeve 4 is fixedly connected between the open sheath guide blocks 41 and the open clamping guide blocks 42 on the front side of the open curved sheath 3 and between the open sheath guide blocks 41 and the open clamping guide blocks 42 on the rear side of the open curved sheath 3, and the open diameter adjustment 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 adjusting control unit, and the output end of the bending diameter adjusting control unit is connected to the open diameter adjusting sleeve 4 signal. The cooperation of the bending diameter adjusting 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 the bending distance from causing damage to the fire-resistant low-voltage cable body 1.

[0048] Fig.10 It is shown that an adjusting cavity 401 is provided in the open adjusting sleeve 4, and a magnetic isolation layer is coated in the adjusting cavity 401. The front and rear inner walls of the adjusting cavity 401 are fixedly connected with adjusting electromagnetic blocks 402, and a adjusting support spring 403 is fixedly connected between the front and rear adjusting electromagnetic blocks 402. The output end of the bending adjusting control unit is connected with the signal of the adjusting electromagnetic block 402. The setting of the adjusting electromagnetic block 402 can realize the automatic control of the diameter increasing effect of the open bending sleeve 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 sleeve 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 loss caused by damage to the fire-resistant low-voltage cable body 1.

[0049] Figure 1 - Fig.11It is shown that the open sheath guide block 41 and the open clamping guide block 42 are fixedly connected to the end away from the fire-resistant low-voltage cable body 1 with a conductor rod 61, and the conductor rod 61 is fixedly connected to the end away from the fire-resistant low-voltage cable body 1 with a bending guide sleeve 6, and 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 action 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 the laying space.

[0050] Figure 1 - Fig.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 through 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. As the open curved sheath 3 continuously shrinks, the inert protective gas inside it will act on the protective cavity, causing the open curved sheath 3 to continuously increase in diameter, thereby being able to increase the diameter of the turning point of the fire-resistant low-voltage cable body 1, reduce its bending degree, and avoid internal damage to the fire-resistant low-voltage cable body 1 at the bending turning point due to the small bending angle, thereby effectively 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 turning point of the fire-resistant low-voltage cable body 1, reduce the bending damage of the fire-resistant low-voltage cable body 1, and ensure 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 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 increasing 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, thereby gaining effective maintenance time for the cable maintenance personnel, and 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 in that: The invention comprises a fire-resistant low-voltage cable body (1), wherein an open bending sheath (3) is slidably sleeved on the outer end of the fire-resistant low-voltage cable body (1), 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 at 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 bending connecting rods (21), and the upper and lower ends of the open bending sheath (3) are fixedly connected to bending core rods (31), and 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 one end of the bending regulating strip (5) 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, the other end of the induction cable bundle is connected to a bending controller, the bending controller is equipped with a bending control system, the bending control system comprises 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 end, the bending angle setting unit and the bending command 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 body (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 cavity (501) is provided in the bending control strip (5); the front and rear inner walls of the bending control cavity (501) are both 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 signal-connected to a pressure probe arranged in the bending control cavity (501); and the output end of the bending angle control unit is signal-connected to the bending control electromagnetic block (502).

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 grooves 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 at the front side and the front side of the bending clamping split body (2) located at 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 at 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 at 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); 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: The open diameter adjustment sleeve (4) is provided with a diameter adjustment cavity (401), front and rear inner walls of the diameter adjustment cavity (401) are both fixedly connected with diameter adjustment electromagnetic blocks (402), 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); 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 regulating strip (5).

7. The industrial low-smoke, halogen-free, fire-resistant low-voltage cable according to claim 1, characterized in that: The curved clamping split 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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