Anti-twist branch cable
By designing multiple branch braided layers and anti-torsion joints on the deep-sea sampler pulling rope, combining the rotating ring, convex plate and curved plate, the problem of easy kink in the deep-sea sampler pulling rope is solved, and the anti-torsion and resistance of the deep-sea sampler pulling rope is improved. Pressure capability enhances safety and stability.
Patent Information
- Application Number
- CN202211646680.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2042-12-21
AI Technical Summary
The existing deep-sea sampler pulling ropes are prone to kinks, resulting in instrument reversal and safety hazards. As the depth of in-sea operation increases, the branch cables have insufficient anti-torsion and tensile resistance.
A anti-torsion branch cable is designed. By setting multiple branch braiding layers and anti-torsion joints on the main cable braiding layer, the branch braiding layer and the main cable braiding layer are woven together, and the fixing blocks and plugs are used to enhance water resistance and resistance. Torsional capability, rotating rings and convex plates increase resistance to torsion, curved plates and connecting strips are used to fix and reduce branch cable length.
It effectively reduces the torque stress of the braided layer of the main cable, improves the anti-torsion and compression capabilities of the branch cables, enhances the waterproofness and torsion resistance, reduces the transmission of torsion force, and improves safety and stability.
Smart Images
Figure CN115807352B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of deep-sea instrument suspension, and in particular to an anti-twisting branch cable. Background Art
[0002] Traditional deep-sea samplers usually use a lifting rope when conducting deep-sea surveys and lifting items. The existing lifting rope is generally a single steel wire with only two pulling rings at both ends. It is easy to get tangled in the deep sea and cause dangerous situations. Branch cables are now used for deep-sea deployment equipment. Multiple branches are used to disperse the force and reduce the possibility of the rope breaking.
[0003] There is an invention patent with application publication number CN103276616A, which protects a new type of multi-branch suspension rope for deep-sea samplers, in order to solve the technical problems of the existing technology that the suspension rope is easy to be tangled during operation, causing the instrument to reverse, etc. It includes a rope body and rings at both ends of the rope body, and at least two branch rings are arranged on the rope body. Since the present invention adopts the above structure, branch rings are arranged on the rope body, so that it will not be tangled in the water, and the zero resistance of the rope body in the water (that is, the gravity and buoyancy are stable) is achieved, and the instrument being pulled will not be damaged.
[0004] In the above technical solution, as the depth of sea operations is getting deeper and deeper, the anti-twisting and tensile strength of the branch cable also need to be further enhanced. Summary of the invention
[0005] In order to solve the deficiencies in the prior art, the present invention provides an anti-twisting branch cable.
[0006] The technical solution of the present invention is:
[0007] The present invention provides an anti-twisting branch cable, comprising a main cable, the main cable comprises a main cable braided layer, the main cable braided layer is fixedly connected with a main cable ring, a plurality of branch braided layers are arranged on the outer cover of the main cable braided layer, both ends of the branch braided layer are fixedly connected to the main cable braided layer, a branch cable is arranged at one end of the branch braided layer away from the main cable ring, the branch cable is fixedly connected with the branch rope ring at one end away from the branch braided layer, and eye connectors are fixedly connected in the main cable ring and the branch rope ring;
[0008] A fixed block is fixedly connected to one end of the branch braided layer away from the main cable ring. The fixed block is located between the branch braided layer and the main cable braided layer. The fixed block is rotatably connected to the main cable braided layer. The main cable braided layer is fixedly connected to multiple anti-twist joints, which abut against the inner side of the branch braided layer.
[0009] The beneficial effect achieved by the present invention is as follows: when the user uses a branch cable, the instrument is first hung on the branch rope ring, the main cable ring is connected to the ship or onshore equipment, the main cable ring can also be connected to other branch cables, and then the instrument is put into the water. The instrument in the water will apply force to the branch cable due to its own weight, buoyancy, water flow and other factors. When the branch cable is twisted under force, the branch braided layer will first be driven to twist. The branch braided layer effectively eliminates the torque, which greatly reduces the force on the main cable braided layer. In addition, the anti-twist joint divides the main cable braided layer into multiple sections, so that the torsional force of the branch cable is not easily transmitted to other sections, which effectively improves the anti-twist ability and pressure resistance.
[0010] Furthermore, the branch braided layer is braided into the main cable braided layer away from one end of the branch cable.
[0011] Through the above scheme, the branch braided layer and the main cable braided layer are weaved together to effectively increase the strength between the two, so that the branch braided layer and the main cable braided layer are not easy to separate, but not fixed too tightly, resulting in the branch braided layer being unable to dissipate torque.
[0012] Furthermore, a plug is fixedly connected to one end of the fixing block away from the main cable ring, the plug extends out of the branch braided layer and the cross-sectional diameter of the plug is greater than the cross-sectional diameter of the branch braided layer.
[0013] Through the above solution, the fixing block and the plug are used to fix the branch braided layer, and the plug can enhance the waterproofness of the branch braided layer and reduce the possibility of the branch braided layer being stretched and deformed.
[0014] Furthermore, a first fastening ring is fixedly connected to the main cable braided layer near the main cable rope ring, a second fastening ring is fixedly connected to the branch braided layer at a side away from the plug, and a third fastening ring is fixedly connected to the other end of the branch braided layer near the plug.
[0015] Through the above solution, the first fastening ring is used to strengthen and fix the main cable braided layer, and the second fastening ring and the third fastening ring are used to strengthen and fix the branch braided layer.
[0016] Furthermore, the surfaces of the fixing block and the anti-twist joint are roughened.
[0017] Through the above solution, the rough surface setting of the fixing block and the anti-twist joint can effectively increase the friction force and can more effectively block the torsion.
[0018] Furthermore, a plurality of rotating rings are provided on the outer cover of the main cable braided layer, the rotating rings are all in contact with the inner side of the branch braided layer, the rotating rings are in contact with each other, the rotating rings are fixedly connected with elastic convex plates, the convex plates are arranged along the length direction of the main cable braided layer, and talcum powder is filled between the rotating rings and the main cable braided layer.
[0019] Through the above scheme, the rotating ring and the convex plate are used to enhance the rotational relationship between the branch braided layer and the main cable braided layer, enhance the anti-twisting ability of the branch braided layer, and the talcum powder makes it easier for the rotating ring to rotate relative to the main cable braided layer.
[0020] Furthermore, each rotating ring is fixedly connected to a T-shaped protrusion on one side, and the T-shaped protrusion is arranged along the circumferential direction of the rotating ring. A T-shaped slide groove is opened on the other side of each rotating ring, and the T-shaped slide groove is arranged along the circumferential direction of the rotating ring. The T-shaped protrusion of each rotating ring is slidably connected to the T-shaped slide groove of the adjacent rotating ring.
[0021] Through the above solution, the T-shaped protrusion and the T-shaped groove cooperate to allow the rotating rings to rotate relative to each other, and are not easily separated or misaligned.
[0022] Furthermore, an optical fiber is arranged in the braided layer of the main cable, a protective tube is arranged on the outer jacket of the optical fiber, a hot-melt adhesive layer is fixedly connected to the outside of the protective tube, reinforcing ribs are fixedly connected to the outside of the protective tube, the reinforcing ribs are arranged along the length direction of the protective tube, a branch tube is fixedly connected to the protective tube near the position of the branch cable, the branch tube is fixedly connected to the branch cable, the optical fiber extends into the branch tube, a joint is fixedly connected to one end of the branch tube away from the protective tube, the joint is exposed from the branch cable, the optical fiber is fixedly connected to the joint, a through groove is provided on the rotating ring near the branch tube, and the branch tube is arranged through the through groove.
[0023] Through the above solution, the protective tube and the hot-melt adhesive layer are used to protect the optical fiber and prevent the optical fiber from bending or contacting water.
[0024] Furthermore, a plurality of connecting parts are fixedly connected to the branch cable, and an elastic arc plate is fixedly connected to each connecting part. A clamping rod is fixedly connected to one end of each arc plate, and a clamping groove is provided at the other end of the arc plate. The clamping rod of each arc plate can be clamped in the clamping groove, and when the clamping rod is clamped in the clamping groove, the arc plate can surround the main cable braided layer.
[0025] Through the above scheme, the arc plate can clamp the clamping rod into the clamping groove when surrounding the main cable braided layer, so that the arc plate is fixed on the main cable braided layer in a ring shape, and the branch rope can be tied to the main cable braided layer through the arc plate, which is convenient for transportation. At the same time, a small number of arc plates can be fixed to reduce the length of the branch rope extending from the main cable.
[0026] Furthermore, each arc plate is provided with a first thread groove, the arc plate is connected with a first bolt, the first bolt is rotatably connected with an elastic connecting strip, the length of the connecting strip is greater than the distance between two adjacent arc plates, the other end of the connecting strip is rotatably connected with a second bolt, the first bolt and the second bolt can both be threadedly connected in the first thread groove, a second thread groove is provided at one end of the connecting strip close to the second bolt, and the first bolt can both be threadedly connected in the second thread groove.
[0027] Through the above solution, the connecting strip can fix the relative distance between the two arc plates. When the branch cable is underwater and the arc plates are fixed on the main cable braided layer, the connecting strip can reduce the situation where the arc plates are pulled apart by water flow and other forces.
[0028] The anti-twisting branch cable of the present invention has the following advantages:
[0029] 1. When the user uses a branch cable, first hang the instrument on the branch rope ring, connect the main cable ring to the ship or onshore equipment, the main cable ring can also be connected to other branch cables, and then put the instrument into the water. The instrument in the water will exert force on the branch cable due to its own weight, buoyancy, water flow and other factors. When the branch cable is twisted by force, it will first drive the branch braided layer to twist. The branch braided layer effectively eliminates the torque, greatly reducing the force on the main cable braided layer. In addition, the anti-twist section divides the main cable braided layer into multiple sections, making it difficult for the torsional force of the branch cable to be transmitted to other sections, effectively improving the anti-twist ability and pressure resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;
[0031] Figure 2 is a cross-sectional view of the first embodiment of the present invention;
[0032] Figure 3 is a schematic diagram of a second embodiment of the present invention;
[0033] Figure 4 is a cross-sectional view of a second embodiment of the present invention;
[0034] Figure 5 is a cross-sectional view of the curved plate and branch pipe of the second embodiment of the present invention;
[0035] Figure 6 is a cross-sectional view of a rotating ring according to a second embodiment of the present invention;
[0036] Figure 7 is a cross-sectional view of an optical fiber and a curved plate according to a second embodiment of the present invention;
[0037] Figure 8 yes Figure 7 A magnified view of part A;
[0038] Fig. 9 It is a schematic diagram of a branch pipe and a joint according to a second embodiment of the present invention.
[0039] In the figure, 1, main cable for suspension; 11, main cable braided layer; 111, first fastening ring; 12, main cable ring; 121, eyelet connector; 13, rotating ring; 131, convex plate; 132, talcum powder; 133, T-shaped protrusion; 134, T-shaped slide groove; 135, through groove; 2, branch braided layer; 21, branch cable; 211, branch rope ring; 22, fixing block; 221, plug; 23, anti-twist joint; 24, second fastening ring; 25, third fastening ring; 3, optical fiber; 31, protective tube; 311, reinforcing rib; 32, hot melt adhesive layer; 33, branch pipe; 34, joint; 4, arc plate; 41, connector; 42, clamping rod; 43, clamping groove; 44, first thread groove; 45, first bolt; 5, connecting strip; 51, second bolt; 52, second thread groove. DETAILED DESCRIPTION
[0040] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.
[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0043] Embodiment 1
[0044] The present invention provides a twist-proof branch cable, such as Figure 1 and Figure 2As shown, it includes a main cable 1, which includes a main cable braided layer 11, one end of which is fixedly connected to a main cable ring 12, and a plurality of branch braided layers 2 are arranged on the outer cover of the main cable braided layer 11, and both ends of the branch braided layer 2 are fixedly connected to the main cable braided layer 11. The branch braided layer 2 is braided in the main cable braided layer 11 at one end away from the branch cable 21. A branch cable 21 is arranged at one end of the branch braided layer 2 away from the main cable ring 12, and a branch cable ring 211 is fixedly connected to one end of the branch cable 21 away from the branch braided layer 2, and an eye connector 41121 is fixedly connected to the main cable ring 12 and the branch cable ring 211. The main cable ring 12 and the branch cable ring 211 are fixedly connected. The main cable 1 can be mounted with various underwater instruments, and the instruments are connected to the main cable 1 through the eye connector 41121. The branch braided layer 2 and the main cable braided layer 11 are braided with each other to effectively increase the strength between the two, so that the branch braided layer 2 and the main cable braided layer 11 are not easy to separate, but not fixed too tightly, resulting in the branch braided layer 2 being unable to dissipate torque.
[0045] like Figure 1 and Figure 2 As shown, the main cable braided layer 11 is fixedly connected with a first fastening ring 111 at a position close to the main cable ring 12, the branch braided layer 2 is fixedly connected with a second fastening ring 24 at a position away from the plug 221, and the other end of the branch braided layer 2 is fixedly connected with a third fastening ring 25 close to the plug 221. The first fastening ring 111 is used to strengthen and fix the main cable braided layer 11, and the second fastening ring 24 and the third fastening ring 25 are used to strengthen and fix the branch braided layer 2.
[0046] like Figure 1 and Figure 2 As shown, the branch braided layer 2 is fixedly connected with a fixed block 22 at one end away from the main cable ring 12, and the fixed block 22 is located between the branch braided layer 2 and the main cable braided layer 11, and the fixed block 22 is rotatably connected to the main cable braided layer 11. The fixed block 22 is fixedly connected with a plug 221 at one end away from the main cable ring 12, and the plug 221 extends out of the branch braided layer 2 and the cross-sectional diameter of the plug 221 is larger than the cross-sectional diameter of the branch braided layer 2. The main cable braided layer 11 is fixedly connected with a plurality of anti-twist joints 23, and the anti-twist joints 23 abut against the inner side of the branch braided layer 2. The surfaces of the fixed block 22 and the anti-twist joints 23 are roughened. The fixed block 22 and the plug 221 are used to fix the branch braided layer 2, and the plug 221 can enhance the waterproofness of the branch braided layer 2, while reducing the possibility of the branch braided layer 2 being stretched and deformed. The anti-twist joint 23 divides the main cable braided layer 11 into multiple sections, so that the torsional force of the branch cable 21 is not easily transmitted to other sections, effectively improving the anti-twist ability and pressure resistance. The rough surface of the fixing block 22 and the anti-twist joint 23 can effectively increase the friction force and can more effectively block the torsion.
[0047] The present invention provides an anti-twisting branch cable, and the implementation principle is: when the user uses the branch cable, first hang the instrument on the branch rope ring 211, connect the main cable ring 12 to the ship or onshore equipment, the main cable ring 12 can also be connected to other branch cables 21, and then put the instrument into the water. The instrument in the water will apply force to the branch cable 21 due to its own weight, buoyancy, water flow and other factors. When the branch cable 21 is twisted by the force, it will first drive the branch braided layer 2 to twist. The branch braided layer 2 effectively eliminates the torque, which greatly reduces the force on the main cable braided layer 11. In addition, the anti-twist section 23 divides the main cable braided layer 11 into multiple sections, so that the torsional force of the branch cable 21 is not easily transmitted to other sections, which effectively improves the anti-twist ability and pressure resistance.
[0048] Embodiment 2
[0049] The present invention provides a twist-proof branch cable, such as Figure 3 and Figure 4 As shown, the difference from the first embodiment is that an optical fiber 3 is arranged in the main cable braided layer 11. A plurality of connectors 41 are fixedly connected to the branch cable 21, and an elastic arc plate 4 is fixedly connected to each connector 41.
[0050] like Figure 3 and Figure 5 As shown, one end of each arc plate 4 is fixedly connected with a clamping rod 42, and the other end of the arc plate 4 is provided with a clamping groove 43. The clamping rod 42 of each arc plate 4 can be clamped in the clamping groove 43. When the clamping rod 42 is clamped in the clamping groove 43, the arc plate 4 can surround the main cable braided layer 11. When the arc plate 4 surrounds the main cable braided layer 11, the clamping rod 42 is clamped in the clamping groove 43, so that the arc plate 4 is fixed on the main cable braided layer 11 in a ring shape, and the branch cable 21 can be tied to the main cable braided layer 11 through the arc plate 4, which is convenient for transportation. At the same time, a small number of arc plates 4 can be fixed to reduce the length of the branch cable 21 extending from the main cable 1.
[0051] like Figure 3 and Figure 5 As shown, each arc-shaped plate 4 is provided with a first thread groove 44, and the arc-shaped plate 4 is connected with a first bolt 45, and the first bolt 45 is rotatably connected with an elastic connecting strip 5, and the length of the connecting strip 5 is greater than the distance between two adjacent arc-shaped plates 4, and the other end of the connecting strip 5 is rotatably connected with a second bolt 51, and the first bolt 45 and the second bolt 51 can both be threadedly connected in the first thread groove 44, and the connecting strip 5 is provided with a second thread groove 52 at one end close to the second bolt 51, and the first bolt 45 can both be threadedly connected in the second thread groove 52. The connecting strip 5 can fix the relative distance between the two arc-shaped plates 4, and when the branch cable 21 is underwater and the arc-shaped plates 4 are fixed on the main cable braided layer 11, the connecting strip 5 can reduce the occurrence of the arc-shaped plates 4 being pulled apart by water flow or other forces.
[0052] like Figure 4 and Figure 6 As shown, the outer cover of the main cable braided layer 11 is provided with a plurality of rotating rings 13, the rotating rings 13 are all in contact with the inner side of the branch braided layer 2, the rotating rings 13 are in contact with each other, one side of each rotating ring 13 is fixedly connected with a T-shaped protrusion 133, the T-shaped protrusion 133 is arranged along the circumferential direction of the rotating ring 13, the other side of each rotating ring 13 is provided with a T-shaped slide 134, the T-shaped slide 134 is arranged along the circumferential direction of the rotating ring 13, and the T-shaped protrusion 133 of each rotating ring 13 is slidably connected in the T-shaped slide 134 of the adjacent rotating ring 13. The rotating rings 13 are all fixedly connected with elastic convex plates 131, the convex plates 131 are arranged along the length direction of the main cable braided layer 11, and talcum powder 132 is filled between the rotating ring 13 and the main cable braided layer 11. The rotating ring 13 and the convex plate 131 are used to enhance the rotational relationship between the branch braided layer 2 and the main cable braided layer 11, and enhance the anti-torsion ability of the branch braided layer 2. The talcum powder 132 makes it easier for the rotating ring 13 to rotate relative to the main cable braided layer 11. The T-shaped protrusion 133 and the T-shaped groove 134 cooperate to allow the rotating ring 13 to rotate relative to each other, and it is not easy to separate and dislocate.
[0053] like Figure 7 and Figure 8 As shown, the outer jacket of the optical fiber 3 is provided with a protective tube 31, a hot melt adhesive layer 32 is fixedly connected to the outside of the protective tube 31, and a reinforcing rib 311 is fixedly connected to the outside of the protective tube 31. The reinforcing rib 311 is arranged along the length direction of the protective tube 31. The protective tube 31 and the hot melt adhesive layer 32 are used to protect the optical fiber 3 to prevent the optical fiber 3 from bending or contacting water.
[0054] like Figure 4 and Fig. 9 As shown, the protection tube 31 is fixedly connected to a branch tube 33 near the branch cable 21, the branch tube 33 is fixedly connected to the branch cable 21, the optical fiber 3 extends into the branch tube 33, the branch tube 33 is fixedly connected to a connector 34 at one end away from the protection tube 31, the connector 34 is exposed from the branch cable 21, the optical fiber 3 is fixedly connected to the connector 34, the rotating ring 13 near the branch tube 33 is provided with a through groove 135, and the branch tube 33 is arranged through the through groove 135. The optical fiber 3 is connected to a plug of the instrument through the connector 34.
[0055] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A twist-resistant branch cable, comprising a suspended main cable (1), characterized in that: The main suspension cable (1) comprises a main cable braided layer (11), the main cable braided layer (11) is fixedly connected to a main cable ring (12), a plurality of branch braided layers (2) are arranged on the outer shell of the main cable braided layer (11), both ends of the branch braided layer (2) are fixedly connected to the main cable braided layer (11), a branch cable (21) is arranged at one end of the branch braided layer (2) away from the main cable ring (12), a branch cable (21) is fixedly connected to one end of the branch braided layer (2) away from the branch cable ring (21), and an eye connector (121) is fixedly connected inside the main cable ring (12) and the branch cable ring (211); A fixed block (22) is fixedly connected to one end of the branch braided layer (2) away from the main cable ring (12); the fixed block (22) is located between the branch braided layer (2) and the main cable braided layer (11); the fixed block (22) is rotatably connected to the main cable braided layer (11); the main cable braided layer (11) is fixedly connected to a plurality of anti-twist joints (23); the anti-twist joints (23) abut against the inner side of the branch braided layer (2); A plug (221) is fixedly connected to one end of the fixing block (22) away from the main cable ring (12); the plug (221) extends out of the branch braided layer (2) and the cross-sectional diameter of the plug (221) is greater than the cross-sectional diameter of the branch braided layer (2); A first fastening ring (111) is fixedly connected to the main cable braided layer (11) at a position close to the main cable ring (12), a second fastening ring (24) is fixedly connected to the branch braided layer (2) at a position away from the plug (221), and a third fastening ring (25) is fixedly connected to the other end of the branch braided layer (2) close to the plug (221); The outer cover of the main cable braided layer (11) is provided with a plurality of rotating rings (13), the rotating rings (13) are all in contact with the inner side of the branch braided layer (2), the rotating rings (13) are in contact with each other, the rotating rings (13) are all fixedly connected with elastic convex plates (131), the convex plates (131) are arranged along the length direction of the main cable braided layer (11), and talcum powder (132) is filled between the rotating rings (13) and the main cable braided layer (11); The surfaces of the fixing block (22) and the anti-twist joint (23) are roughened.
2. The anti-twist branch cable according to claim 1, characterized in that: One end of the branch braided layer (2) away from the branch cable (21) is braided in the main cable braided layer (11).
3. The anti-twisting branch cable according to claim 1, characterized in that: A T-shaped protrusion (133) is fixedly connected to one side of each rotating ring (13), and the T-shaped protrusion (133) is arranged along the circumferential direction of the rotating ring (13). A T-shaped sliding groove (134) is opened on the other side of each rotating ring (13), and the T-shaped sliding groove (134) is arranged along the circumferential direction of the rotating ring (13). The T-shaped protrusion (133) of each rotating ring (13) is slidably connected in the T-shaped sliding groove (134) of the adjacent rotating ring (13).
4. The anti-twisting branch cable according to claim 1, characterized in that: An optical fiber (3) is arranged in the main cable braided layer (11), a protective tube (31) is arranged on the outer jacket of the optical fiber (3), a hot melt adhesive layer (32) is fixedly connected to the outside of the protective tube (31), a reinforcing rib (311) is fixedly connected to the outside of the protective tube (31), the reinforcing rib (311) is arranged along the length direction of the protective tube (31), a branch tube (33) is fixedly connected to the protective tube (31) at a position close to the branch cable (21), the branch tube (33) is fixedly connected to the branch cable (21), the optical fiber (3) extends into the branch tube (33), a joint (34) is fixedly connected to one end of the branch tube (33) away from the protective tube (31), the joint (34) is exposed from the branch cable (21), the optical fiber (3) is fixedly connected to the joint (34), a through groove (135) is opened on the rotating ring (13) close to the branch tube (33), and the branch tube (33) passes through the through groove (135) and is arranged.
5. The anti-twisting branch cable according to claim 1, characterized in that: A plurality of connecting pieces (41) are fixedly connected to the branch cable (21), and an elastic arc plate (4) is fixedly connected to each connecting piece (41). A clamping rod (42) is fixedly connected to one end of each arc plate (4), and a clamping groove (43) is provided at the other end of each arc plate (4). The clamping rod (42) of each arc plate (4) can be clamped in the clamping groove (43). When the clamping rod (42) is clamped in the clamping groove (43), the arc plate (4) can surround the main cable braided layer (11).
6. The anti-twisting branch cable according to claim 5, characterized in that: Each arc-shaped plate (4) is provided with a first thread groove (44), the arc-shaped plate (4) is connected with a first bolt (45), the first bolt (45) is rotatably connected with an elastic connecting strip (5), the length of the connecting strip (5) is greater than the distance between two adjacent arc-shaped plates (4), the other end of the connecting strip (5) is rotatably connected with a second bolt (51), the first bolt (45) and the second bolt (51) can both be threadedly connected in the first thread groove (44), a second thread groove (52) is provided at one end of the connecting strip (5) close to the second bolt (51), and the first bolt (45) can both be threadedly connected in the second thread groove (52).