A cable core untwisting device and its cable core

Abstract

This invention relates to the field of optical fiber technology and discloses a cable core untwisting device and its cable core, comprising a main frame, an untwisting assembly, a cable laying assembly, and a cable core. The main frame includes a first plate extending along a first direction and spaced apart from each other, and a second plate extending along a second direction and spaced apart from each other. The first plate and the second plate are connected to each other to form an untwisting space for placing the cable core. The untwisting assembly is disposed within the untwisting space and includes an untwisting frame and a first rotating shaft. The untwisting frame is disposed within the untwisting space along the first direction, and both ends of the untwisting frame are respectively connected to the first rotating shaft. The end of each first rotating shaft opposite to the untwisting frame is rotatably connected to the second plate. The cable laying assembly is disposed within the untwisting frame and includes a second rotating shaft and a reel. The second rotating shaft is disposed within the untwisting frame along the second direction, and the reel is sleeved on the outer periphery of the second rotating shaft. One end of the cable core is wrapped around the outer periphery of the reel, and the other end extends outside the untwisting space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber, in particular to a cable core untwisting device and a cable core thereof. BACKGROUND

[0002] With the continuous development of fiber grating sensor system, the use of fiber grating sensor system in long-span cable, intelligent cable and environmental monitoring is becoming more and more widely, and the demand is increasing. The fiber grating sensor system includes a display unit and a cable core. The performance of the cable core directly affects the monitoring operation of the fiber grating sensor system. It is particularly important to monitor the performance of the cable core. Once the cable is damaged, the durability and usability of the structure will be reduced, and some load-bearing structures may be damaged suddenly.

[0003] At present, the cable core in the existing fiber grating sensor intelligent monitoring system is slotted on the surface of one or more metal wire units. The fiber grating sensor is adhered to the surface groove of the metal wire unit of the cable core by glue, or the fiber grating sensor intelligent monitoring system is wound on the surface of the cable core, and the fiber grating sensor is adhered to the cable by glue. The use of glue requires high requirements, and the fiber grating sensor in the cable becomes brittle and hard after the glue solidifies. When subjected to external force, it is easy to break and cannot play a detection role. In the actual production process, the step of adhering glue cannot be automated, and manual adhesion is required, which has low production efficiency and is not suitable for mass production. The method of winding the fiber grating sensor intelligent monitoring system on the surface of the cable is prone to external pressure during cable production and actual application, which causes the fiber grating to bear stress, has a low survival rate, and cannot play a long-term monitoring role. At the same time, the intelligent sensing monitoring unit pay-off device mostly uses a cable core take-up machine to passively pay off and untwist, relying on the power of the take-up machine to pull the wire, and the speed cannot be controlled. The fiber pay-off speed of this untwisting method completely depends on the power of the operator or the take-up machine, and the speed cannot be controlled. This method is only suitable for scenes and simple pay-off tasks that do not require high speed and accuracy. SUMMARY

[0004] The technical problem to be solved by the present application is that in the prior art, the cable core fixes the fiber grating sensor by adhesion and winding, which has low production efficiency and is easily affected by external force. At the same time, the existing cable core untwisting device cannot control the untwisting speed.

[0005] To solve the above technical problems, the application provides a cable core untwisting device, which comprises a main frame, an untwisting assembly, a pay-off assembly and a cable core.

[0006] In an embodiment, the untwisting assembly further comprises a first motor, the first motor is arranged at one end of the second plate body away from the untwisting space, and a power output end of the first motor is connected to the first rotating shaft through the second plate body for driving the first rotating shaft to rotate in the first direction.

[0007] In an embodiment, the disc comprises a support plate, the support plate is arranged at two ends of the disc respectively, and the outer diameter of the support plate is greater than the outer diameter of the disc.

[0008] In an embodiment, the pay-off assembly further comprises a second motor, the second motor is arranged at one end of the support plate away from the disc, and a power output end of the second motor is connected to the disc for driving the disc to rotate in the second direction.

[0009] In an embodiment, a control module is arranged in the second motor, and the control module is used for controlling the rotating speed of the disc.

[0010] In an embodiment, the main frame further comprises a plurality of grooved guide wheels, the plurality of grooved guide wheels are arranged on the second plate body, and the plurality of grooved guide wheels are located at one end of the untwisting space away from the first motor, and one end of the cable core passes through the second plate body through the plurality of grooved guide wheels.

[0011] Based on the above-mentioned cable core untwisting device, the application further provides a cable core, which comprises, from outside to inside, a metal hinged wire, an outer sheath, a spiral armor layer and an optical fiber grating, and a plurality of vibration reduction bodies are circumferentially arranged around the optical fiber grating.

[0012] In an embodiment, the material of the outer sheath is an insulating material.

[0013] In one embodiment, the number of metal wires is multiple, the multiple metal wires are arranged around the circumference of the fiber grating, and the material of the metal wires is aluminum.

[0014] Compared with the prior art, the cable core untwisting device and the cable core have the beneficial effects that: 1) the untwisting assembly includes an untwisting frame and a first rotating shaft, the untwisting frame is arranged in the untwisting space along a first direction, and the two ends of the untwisting frame are connected with the first rotating shaft respectively, and the end of each first rotating shaft away from the untwisting frame is rotationally connected with the second plate body. The untwisting frame rotates along the first direction, effectively reduces the incomplete release of the vertical torsion of the cable core caused by the inconsistent speed of manual untwisting, and reduces the service life of the cable core caused by the influence of external force on the fiber grating; 2) the pay-off assembly includes a second rotating shaft and a reel, the reel rotates along a second direction under the driving of the second rotating shaft, and in turn drives the cable core to rotate along the same direction, and this rotating mode effectively eliminates the torsion of the cable core in the horizontal direction; the present application effectively solves the technical problems that the cable core in the prior art fixes the fiber grating sensor through the adhesion and winding mode, the production efficiency is low, and the cable core is easily affected by external force, and the existing cable core untwisting device cannot control the untwisting speed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the cable core untwisting device of the present application.

[0016] Figure 2 is a structural schematic diagram of the cable core of the present application.

[0017] In the figure, 1 is a main frame, 11 is a first plate body, 12 is a second plate body, 13 is a multi-groove guide wheel set, 2 is an untwisting assembly, 21 is an untwisting frame, 22 is a first rotating shaft, 23 is a first motor, 3 is a pay-off assembly, 31 is a second rotating shaft, 32 is a reel, 33 is a support plate, 34 is a second motor, 4 is a cable core, 41 is a metal wire, 42 is an outer sheath, 43 is a spiral armor layer, 44 is a fiber grating, and 45 is a damping body. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0019] In the description of the application, it should be understood that when an element is referred to as being "fixedly attached" or "attached" to another element, it can be directly on the other element or indirectly on the other element, with one or more intervening elements. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or indirectly connected or coupled to the other element, with one or more intervening elements. The terms "mounting", "connected", "connecting", "coupling" and "coupled" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections, electrical connections, or they can be direct connections, or indirect connections through intervening elements, or they can be internal connections between elements, or interactions between two elements. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those of ordinary skill in the art.

[0020] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in the present application are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0021] In the description of the application, it should be understood that the terms "first", "second" in the present application are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0022] As Figure 1As shown, the cable core untwisting device provided by the embodiment of the present application preferably comprises a main frame 1, an untwisting assembly 2, a pay-off assembly 3 and a cable core 4. The main frame 1 comprises a first plate body 11 extending along a first direction and spaced apart from each other, and a second plate body 12 extending along a second direction and spaced apart from each other. The first plate body 11 and the second plate body 12 are connected to each other to form an untwisting space for placing the cable core 4. The untwisting assembly 2 is arranged in the untwisting space. The untwisting assembly 2 comprises an untwisting frame 21 and a first rotating shaft 22. The untwisting frame 21 is arranged in the untwisting space along the first direction. The two ends of the untwisting frame 21 are respectively connected to the first rotating shaft 22. The end of each first rotating shaft 22 away from the untwisting frame 21 is rotationally connected to the second plate body 12. The pay-off assembly 3 is arranged in the untwisting frame 21. The pay-off assembly 3 comprises a second rotating shaft 31 and a reel 32. The second rotating shaft 31 is arranged in the untwisting frame 21 along the second direction. The reel 32 is sleeved on the outer periphery of the second rotating shaft 31. One end of the cable core 4 is wound around the outer periphery of the reel 32. The other end of the cable core 4 extends to the outside of the untwisting space through the second plate body 12. The first rotating shaft 22 rotates along the first direction, drives the untwisting frame 21 to rotate along the first direction, and further drives the cable core 4 to rotate along the first direction to eliminate the vertical torsion of the cable core 4. The reel 32 rotates along the second direction to drive the cable core 4 to rotate along the second direction to eliminate the horizontal torsion of the cable core 4.

[0023] Based on the above technical features, the untwisting assembly 2 is arranged. The untwisting assembly 2 comprises the untwisting frame 21 and the first rotating shaft 22. The untwisting frame 21 is arranged in the untwisting space along the first direction. The two ends of the untwisting frame 21 are respectively connected to the first rotating shaft 22. The end of each first rotating shaft 22 away from the untwisting frame 21 is rotationally connected to the second plate body 12. The untwisting frame 21 rotates along the first direction, effectively reduces the incomplete release of the vertical torsion of the cable core 4 caused by the inconsistent speed of manual untwisting, causes the fiber grating 44 to be affected by external force, and reduces the service life of the cable core 4. The pay-off assembly 3 is arranged. The pay-off assembly 3 comprises the second rotating shaft 31 and the reel 32. The reel 32 rotates along the second direction under the drive of the second rotating shaft 31, and further drives the cable core 4 to rotate along the same direction. This rotating mode effectively eliminates the torsion of the cable core 4 in the horizontal direction.

[0024] As some embodiments of the present application, Figure 1 As shown, the untwisting assembly 2 further comprises a first motor 23. The first motor 23 is arranged at the end of the second plate body 12 away from the untwisting space. The power output end of the first motor 23 penetrates through the second plate body 12 and is connected to the first rotating shaft 22 for driving the first rotating shaft 22 to rotate along the first direction. Such a layout not only ensures the stable operation of the first motor 23, but also avoids interference with other components in the untwisting space. The power output end of the first motor 23 penetrates through the second plate body 12 and is connected to the first rotating shaft 22. This connection mode ensures that the first motor 23 can directly drive the first rotating shaft 22 to rotate along the first direction.

[0025] As shown in some embodiments of the present application, Figure 1 The disc 32 includes a support plate 33 arranged at both ends of the disc 32, and the outer diameter of the support plate 33 is larger than that of the disc 32. Through the arrangement of the support plate 33, the larger area of the support plate 33 can effectively disperse the weight of the disc 32 and the articles carried thereby, thereby enhancing the overall stability.

[0026] As shown in some embodiments of the present application, Figure 1 The unwinding assembly 3 further includes a second motor 34 arranged at one end of the support plate 33 away from the disc 32, and the power output end of the second motor 34 is connected with the disc 32 for driving the disc 32 to rotate in the second direction. Through the arrangement of the second motor 34, the second motor 34 is located at one end of the support plate 33 away from the disc 32, and the power output end of the second motor 34 is connected with the disc 32 for driving the disc 32 to rotate in the second direction. This rotation mode effectively eliminates the torsion of the cable core 4 in the horizontal direction, and ensures the stability and continuity of the cable core 4 during unwinding.

[0027] As shown in some embodiments of the present application, Figure 1 The second motor 34 is provided with a control module for controlling the rotation speed of the disc 32. Through the arrangement of the control module, the rotation speed of the disc 32 is effectively controlled, and the unwinding speed is accurately controlled. When the unwinding tension of the cable core 4 changes, it can be adjusted in real time to keep the tension constant, and ensure that the cable core 4 will not be over-tightened or over-loose.

[0028] As shown in some embodiments of the present application, Figure 1 The main frame 1 further includes a multi-groove guide roller set 13 arranged on the second plate body 12, and the multi-groove guide roller set 13 is located at one end of the untwisting space away from the first motor 23, and one end of the cable core 4 passes through the second plate body 12 through the multi-groove guide roller set 13. Through the arrangement of the multi-groove guide roller set 13, when the unwinding speed of the device changes, the multi-groove guide roller set 13 can play a buffering role to prevent the detection function of the fiber grating 44 sensing unit from being damaged due to stress, and the yield of the optical unit can be improved to 98%.

[0029] Based on the above cable core 4 untwisting device, as shown in Figure 2As shown, the present application also provides a cable core 4, which comprises a metal wire 41, an outer sheath 42, a spiral armor layer 43 and a fiber grating 44 arranged in sequence from outside to inside, and a plurality of damping bodies 45 are arranged around the fiber grating 44. The combination of the metal wire 41, the outer sheath 42 and the spiral armor layer 43 provides strong protection and support for the cable core 4, so that it can withstand various harsh environments and mechanical stresses. The introduction of the fiber grating 44 enables the cable core 4 to monitor temperature, strain and other parameters in real time, providing important data support for the use and maintenance of the cable core 4. The arrangement of the plurality of damping bodies 45 effectively improves the anti-vibration ability of the cable core 4, protecting the integrity and performance of the fiber grating 44.

[0030] As some embodiments of the present application, as shown in Figure 2 As shown, the material of the outer sheath 42 is an insulating material. As a key protective layer, the outer sheath 42 is made of insulating material, which effectively ensures the safety and stability of the cable core 4 during transmission.

[0031] As some embodiments of the present application, as shown in Figure 2 As shown, the number of metal wires is multiple, and the multiple metal wires are arranged around the fiber grating 44, and the material of the metal wire is aluminum. The multiple aluminum metal wires arranged around the fiber grating 44 are an important feature in the design of the cable core 4. This design not only enhances the mechanical strength of the cable core 4, but also improves its overall performance and stability. The metal wire made of aluminum has the characteristics of light weight, high strength, good electrical conductivity and corrosion resistance, which further improves the service life of the cable core 4.

[0032] In summary, the cable core untwisting device and the cable core thereof provided by the embodiment of the present application have the following beneficial effects compared with the prior art: 1) the untwisting assembly 2, the untwisting assembly 2 comprises an untwisting frame 21 and a first rotating shaft 22, the untwisting frame 21 is arranged in the untwisting space along a first direction, and two ends of the untwisting frame 21 are connected with the first rotating shaft 22 respectively, and an end of each first rotating shaft 22, which is away from the untwisting frame 21, is rotationally connected with the second plate body 12. The untwisting frame 21 rotates along the first direction, effectively reduces the incomplete release of the vertical torsion of the cable core 4 caused by the inconsistent speed of manual untwisting, and reduces the service life of the cable core 4 caused by the influence of the external force on the fiber grating 44; 2) the pay-off assembly 3, the pay-off assembly 3 comprises a second rotating shaft 31 and a reel 32, the reel 32 rotates along a second direction under the driving of the second rotating shaft 31, and then drives the cable core 4 to rotate along the same direction, and this rotating mode effectively eliminates the torsion of the cable core 4 in the horizontal direction; 3) the cable core 4, the fiber grating 44 is protected by the outer sheath 42, the spiral armor layer 43 and the damping body 45, the problem of brittle fracture of the fiber grating 44 caused by external force is avoided, the monitoring quality is ensured, and the service life of the fiber grating 44 is ensured. The present application effectively solves the technical problems that the cable core 4 in the prior art fixes the fiber grating 44 sensor through the adhesion and winding mode, the production efficiency is low, and the fiber grating 44 sensor is easily affected by external force, and the existing cable core 4 untwisting device cannot control the untwisting speed.

[0033] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A cable core untwisting device characterized by, The main frame, the untwisting assembly, the pay-off assembly and the cable core are included. The main frame includes first plate bodies extending along a first direction and spaced from each other and second plate bodies extending along a second direction and spaced from each other, and the first plate bodies and the second plate bodies are connected to each other to form an untwisting space for placing the cable core. The untwisting assembly is arranged in the untwisting space, and the untwisting assembly includes an untwisting frame and first rotating shafts, the untwisting frame is arranged in the untwisting space along the first direction, and both ends of the untwisting frame are connected with the first rotating shafts respectively, and one end of each of the first rotating shafts away from the untwisting frame is rotationally connected with the second plate body. The pay-off assembly is arranged in the untwisting frame, and the pay-off assembly includes second rotating shafts and a disc, the second rotating shafts are arranged in the untwisting frame along the second direction, the disc is connected with the second rotating shafts, one end of the cable core is arranged around the outer periphery of the disc, and the other end of the cable core extends to outside of the untwisting space through the second plate body. The first rotating shafts are rotated along the first direction to drive the untwisting frame to rotate along the first direction, and then drive the cable core to rotate along the first direction to eliminate the vertical torsion of the cable core, and the disc is rotated along the second direction to drive the cable core to rotate along the second direction to eliminate the horizontal torsion of the cable core.

2. The cable core untwisting device of claim 1, wherein The untwisting assembly further includes a first motor, the first motor is arranged at one end of the second plate body away from the untwisting space, and a power output end of the first motor is connected with the first rotating shafts through the second plate body to drive the first rotating shafts to rotate along the first direction.

3. The cable core de-twisting device of claim 2, wherein, The disc includes support plates arranged at both ends of the disc respectively, and the outer edge diameter of the support plates is greater than the outer edge diameter of the disc.

4. The cable core de-twisting device of claim 3, wherein, The pay-off assembly further includes a second motor, the second motor is arranged at one end of the support plate away from the disc, and a power output end of the second motor is connected with the disc to drive the disc to rotate along the second direction.

5. The cable core de-twisting device of claim 4, wherein, The second motor is arranged with a control module, and the control module is used to control the rotating speed of the disc.

6. The cable core de-twisting device of claim 5, wherein, The main frame further includes a plurality of grooved guide wheels, the plurality of grooved guide wheels are arranged on the second plate body, and the plurality of grooved guide wheels are located at one end of the untwisting space away from the first motor, and one end of the cable core passes through the second plate body through the plurality of grooved guide wheels.

7. A cable core produced using the cable core de-twisting device according to any one of claims 1 to 6, characterized in that, The fiber grating is circumferentially arranged with a plurality of damping bodies.

8. The cord according to claim 7, characterized in that The outer sheath is made of insulating material.

9. The cord according to claim 7, characterized in that The number of the metal twisted wires is plural, the plurality of metal twisted wires are circumferentially arranged around the fiber grating, and the metal twisted wires are made of aluminum material.

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