Longitudinal water-blocking type waterproof aerial insulated conductor

Abstract

The present application relates to the technical field of cable conductor, and particularly relates to a longitudinal water-blocking type waterproof overhead insulated conductor, which comprises a cable sheath layer and a cable conductor, the cable conductor is composed of a plurality of metal single wires and has a bundled conductor, and the cable conductor is accommodated in the cable sheath layer, the outer periphery of the cable conductor is covered with an insulation layer, and a twisted water-blocking yarn is arranged between the insulation layer and the cable conductor, the twisted water-blocking yarn is filled in the twisted gap of the cable conductor and is distributed along the circumferential surface of the cable conductor, and a shunt sealing quick-connection assembly is arranged outside the cable sheath layer, the shunt sealing quick-connection assembly has the functions of peeling positioning, branch assembly and sealing protection, can accurately define the peeling interval, ensures the incision to be regular and avoids length deviation, realizes the quick assembly of the branch joint, forms full-wrapping type sealing and insulation protection for the wiring part and the exposed conductor, effectively isolates the invasion of external water vapor and dust, and guarantees the insulation performance and long-term waterproof reliability of the branch part.

Description

Technical Field

[0001] This invention relates to the technical field of cable conductors, and in particular to a longitudinally water-blocking waterproof overhead insulated conductor. Background Technology

[0002] In the on-site branch connection construction of overhead insulated conductors, workers must first mark the stripping area on the cable and strip the outer sheath, then install the branch clamps to complete the conductive connection, and finally perform insulation and waterproofing treatment on the connection point. Under the current operating method, the stripping area is mostly marked manually by hand, lacking standardized positioning benchmarks, which easily leads to deviations in stripping length and irregular cuts. This not only affects the assembly accuracy and conductive bonding effect of the branch clamps, but also poses a risk of accidentally damaging the internal insulation layer and conductor. Conventional connection sealing often uses insulating tape or individual heat shrink tubing, which is cumbersome to assemble on-site, has low construction efficiency, and makes it difficult to consistently guarantee the tightness and integrity of the sealing structure. When exposed to complex outdoor environments for a long time, external moisture and dust can easily penetrate into the connection through the sealing gaps, causing a decrease in the insulation performance of the branch and failure of the waterproofing function. This makes it difficult to meet the dual requirements of long-term insulation and waterproofing and efficient construction of overhead line branch connections. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a longitudinal water-blocking waterproof overhead insulated conductor.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a longitudinal water-blocking waterproof overhead insulated conductor, comprising a cable sheath and a cable conductor, wherein the cable conductor is composed of multiple metal single wires twisted together to form a bundled conductor and is housed inside the cable sheath, the outer periphery of the cable conductor is covered with an insulation layer, and a stranded water-blocking yarn is provided between the insulation layer and the cable conductor, the stranded water-blocking yarn is filled in the twisting gap of the cable conductor and distributed along the circumferential surface of the cable conductor to form a longitudinal water-blocking barrier at the interface; The cable sheath is equipped with a shunt sealing quick-connect assembly on its exterior.

[0005] As a preferred technical solution of the present invention, the diversion sealing quick-connect assembly includes two wire sleeves, and a connecting beam plate is fixedly connected to the outside of the two wire sleeves for synchronously connecting the two wire sleeves. Each of the two cable sleeves is fixedly connected to a limiting sleeve on one side facing each other, and the two cable sleeves and the two limiting sleeves are movably fitted outside the cable sheath.

[0006] As a preferred technical solution of the present invention, a sealing sleeve is provided between the two limiting sleeves. One end of the sealing sleeve is fixedly connected to the outside of the connecting beam plate near the wire sleeve. The sealing sleeve is composed of two sealing semi-circular rings, and the two sealing semi-circular rings are connected by hinges at the ends near the connecting beam plate. The two sealing semi-circular rings are connected and fixed by bolts. Sealing side rings are fixedly connected to both sides of the outside of the two sealing semi-circular rings.

[0007] As a preferred embodiment of the present invention, a sealing gasket is fixedly connected to one side of each of the two sealing side rings. The sealing gasket is used to make interference contact with the limiting sleeve to increase the sealing performance inside the sealing sleeve.

[0008] As a preferred embodiment of the present invention, locking components are provided on the sides of the two wire sleeves that are far apart. Each locking assembly includes two fixed clamping plates and two fixed base plates. The two fixed base plates are fixedly connected to both sides of the outside of the cable sleeve. A circular sleeve plate is rotatably connected inside each fixed base plate. A double-acting screw is fixedly connected inside the circular sleeve plate. The two sides of the double-acting screw are provided with opposite threaded grooves. Positioning ears are threadedly connected to the outside of the threaded grooves on both sides of the double-acting screw. The two positioning ears are fixedly connected to the outside of the two fixed clamping plates. By rotating the double-acting screw, the two positioning ears move towards each other. The two positioning ears simultaneously move the two fixed clamping plates towards each other and close together. The closeness of the two fixed clamping plates makes them make tight contact with the surface of the cable sheath, thereby firmly fixing the cable sleeve to the outside of the cable sheath.

[0009] As a preferred embodiment of the present invention, the inside of the sleeve is provided with several moving auxiliary components; Each moving auxiliary component includes a ball and an inner cavity. The inner cavity is opened inside the sleeve and has a groove for communicating with the inside of the sleeve. The ball is rotatably connected inside the inner cavity, and the side of the ball away from the inner cavity is movably connected to the inside of the groove.

[0010] As a preferred embodiment of the present invention, a spring sheet is fixedly connected inside the cavity. The spring sheet is arranged in an arch shape inside the cavity. The rolling ball is movably connected to the arched surface of the spring sheet. The spring sheet continuously provides the rolling ball with elastic force applied towards the surface of the cable outer sheath, so that the rolling ball can adhere to the surface of the cable outer sheath.

[0011] As a preferred embodiment of the present invention, each sleeve is provided with a synchronous fixing component on its exterior. Each synchronous fixing component includes a retaining plate, which is fixedly connected to the side of the sleeve away from the connecting beam plate. A positioning pin is fixedly connected to the upper end of the retaining plate, and a rotating synchronous insert plate is rotatably connected to the outside of the positioning pin. The end of the rotating synchronous insert plate away from the positioning pin is provided with an insertion hole. After connecting the two sealing semicircular rings inside the sealing sleeve, the bolt is passed through the insertion hole outside the rotating synchronous insert plate to synchronously connect and fix it with the two sealing semicircular rings.

[0012] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention, by setting a quick-connect sealing component, combines the functions of stripping positioning, branch assembly, and sealing protection. It can accurately define the stripping area, ensure neat cuts, avoid length deviations, and achieve rapid assembly of branch connections. At the same time, it forms a fully enclosed sealed insulation protection for the wiring part and the exposed conductor, effectively isolating external moisture and dust from intrusion, and ensuring the insulation performance and long-term waterproof reliability of the branch parts.

[0013] 2. The locking component of this invention can firmly fix the cable sleeve at a designated position on the outer wall of the cable. The clamping force is uniform and the locking is stable and reliable. It can effectively prevent the cable sleeve from shifting during subsequent stripping and wiring operations, ensuring positioning accuracy and operational stability. The adjustment operation is simple and efficient.

[0014] 3. This invention, through the synergistic action of the moving auxiliary component and the synchronous fixing component, can transform the sliding friction between the cable sleeve and the cable sheath into rolling friction, significantly reducing the axial sliding resistance of the cable sleeve and making the position adjustment operation smooth and effortless. At the same time, it avoids the inner wall of the cable sleeve directly scraping the cable sheath, thus protecting the cable surface. It can also provide additional lateral traction and fixation for the sealing sleeve, limiting its axial movement and circumferential deflection, strengthening the sealing stability of the sealing sleeve outside the branch joint, preventing the sealing structure from loosening and shifting under long-term use, and continuously ensuring the reliability of the sealing protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the sleeve of the present invention; Figure 2 This is a schematic diagram of the structure of the sealing sleeve after installation of the present invention; Figure 3 This is a schematic diagram of the structure of the sealing sleeve of the present invention after it is opened; Figure 4 This is a schematic diagram of the cable outer sheath of the present invention; Figure 5 This is a schematic diagram of the branch connector of the present invention; Figure 6 This is a schematic diagram of the limiting sleeve of the present invention; Figure 7 This is a schematic diagram of the structure of the fixing clamp of the present invention; Figure 8 This is a schematic diagram of the sealing side ring of the present invention; Figure 9 This is a partial cross-sectional view of the sleeve structure of the present invention.

[0016] The components are as follows: 10. Cable outer sheath; 11. Cable conductor; 12. Insulation layer; 13. Stranded water-blocking yarn; 14. Branch connector clamp; 20. Cable sleeve; 21. Limiting sleeve; 22. Connecting beam plate; 23. Sealing sleeve; 24. Sealing side ring; 25. Sealing gasket; 30. Fixing clamp plate; 31. Bidirectional screw; 32. Positioning lug; 33. Fixing base plate; 34. Circular sleeve plate; 40. Ball bearing; 41. Inner cavity; 42. Protruding groove; 43. Spring piece; 50. Card seat plate; 51. Rotating synchronous insertion plate; 52. Positioning pin; 53. Insertion hole. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0018] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, a longitudinal water-blocking waterproof overhead insulated conductor includes a cable sheath 10 and a cable conductor 11. The cable sheath 10 serves as the outermost protective substrate of the conductor, resisting external mechanical wear, sun aging, and environmental corrosion, providing a long-lasting physical barrier for the internal conductor and functional layers. The cable conductor 11 is a bundled conductor composed of multiple stranded metal wires, undertaking the core conductive function of power transmission and housed inside the cable sheath 10. The outer periphery of the cable conductor 11 is covered by an insulation layer 12, which serves as the main insulation structure, blocking electrical conduction between the conductor and the external structure, ensuring the electrical safety performance of the line operation. Furthermore, a stranded water-blocking yarn 13 is provided between the insulation layer 12 and the cable conductor 11. The stranded water-blocking yarn 13 fills the stranding gaps of the cable conductor 11 and is distributed along the circumferential surface of the cable conductor 11. Upon contact with water, it can quickly expand and seal the gaps and passages within the conductor, thus forming a longitudinal water-blocking barrier at the interface.

[0019] A shunt sealing quick-connect assembly is provided on the outside of the cable sheath 10. This assembly provides integrated support for positioning, wiring, and sealing protection during the branch connection of overhead conductors. The assembly includes two sleeves 20, which serve as the annular bearing base of the entire quick-connect assembly. Sleeves 20 are fitted onto the cable outer wall to provide installation support and sliding guidance for each functional component. A connecting beam 22 is fixedly connected to the outside of the two sleeves 20. The connecting beam 22 acts as a synchronous linkage component for the two sleeves, maintaining a constant distance between them and driving them to slide synchronously axially. This allows for the synchronous connection of the two sleeves 20. Limiting sleeves 21 are fixedly connected to the opposite side of each sleeve 20. These limiting sleeves 21 serve as positioning references for the stripping operation, defining the stripping area and providing a template end face for the blade, ensuring a neat and precise stripping cut. The two sleeves 20 and the two limiting sleeves 21 are movably fitted onto the outside of the cable sheath 10. A space is provided between the two limiting sleeves 21. A sealing sleeve 23 is provided, which serves as the outer sealing and covering component of the branch connection point. It provides full-coverage insulation and waterproof protection for the exposed conductor and the terminal clamp. One end of the sealing sleeve 23 is fixedly connected to the outside of the connecting beam plate 22 near the wire sleeve 20. The sealing sleeve 23 consists of two sealing semi-circular rings, and the ends of the two sealing semi-circular rings near the connecting beam plate 22 are connected by hinges. The hinged structure can realize the quick opening and closing of the two semi-circular rings, improving the efficiency of on-site assembly. The two sealing semi-circular rings are connected and fixed by bolts. Sealing side rings 24 are fixedly connected to both sides of the outside of the two sealing semi-circular rings. The sealing side rings 24 serve as the end support structure of the sealing sleeve, bearing the sealing gasket and transmitting the clamping force. Sealing gaskets 25 are fixedly connected to the opposite side of the two sealing side rings 24. The sealing gaskets 25 can generate elastic deformation to fill the end face gap after being compressed. The sealing gaskets 25 are used to make interference contact with the limiting sleeve 21 to increase the sealing performance of the inside of the sealing sleeve 23.

[0020] When branching operations are required for overhead insulated conductors, the connecting beam 22 is gripped and pushed to move the two sleeves 20 smoothly along the axial direction of the cable sheath 10. The pushing is stopped when the two sleeves 20 reach the two side boundaries of the area to be branched. At this point, the limiting sleeves 21 at the ends of the two sleeves 20 form two parallel axial positioning boundaries, precisely defining the area to be stripped of the cable sheath 10. The operator can then use the stripping blade to make a circular cut close to the inner end face of the limiting sleeve 21, quickly and neatly completing the stripping of the specified length of sheath, effectively avoiding the problems of skewed cuts and length deviations that occur with manual stripping. After stripping, the branch clamp 14 is fastened and inserted into the exposed cable conductor 11 area, ensuring that the conductor on the inner wall of the clamp is tightly fitted with the cable conductor 11 to form a reliable conductive path. The bolts on the clamp are then tightened to complete the initial fixation of the branch clamp 14 in the stripped area. Subsequently, the two semi-circular sealing rings of the sealing sleeve 23 are fastened together from the top and bottom sides to cover the outside of the branch clamp 14. After aligning the joints, the two semi-circular rings are locked and fixed by the fastening bolts. The sealing side rings 24 and sealing gaskets 25 on both sides are simultaneously pressed and adhered to the end faces of the limiting sleeves 21 on both sides, forming an interference seal fit. This provides a fully enclosed sealed insulation protection for the branch clamp 14 and the exposed conductor area. While enabling rapid assembly of the branch connection, it effectively isolates external moisture and dust from intrusion, ensuring the insulation performance and waterproof reliability of the branch part.

[0021] Locking assemblies are provided on the opposite sides of the two cable sleeves 20. These assemblies axially lock the cable sleeves to the outer wall of the cable, preventing displacement during operation. Each locking assembly includes two fixing clamps 30 and two fixing base plates 33. The fixing clamps 30 act as clamping and locking components, forming a locking friction force by clamping the cable's outer wall in opposite directions. The two fixing base plates 33 are fixedly connected to both sides of the cable sleeve 20, serving as a support base for the screw's rotation and providing stable support for the installation and rotation of the bidirectional screw. Each fixing base plate 33 has a rotatably connected annular sleeve plate 34 inside, allowing free rotation within the fixing base plate for bidirectional operation. The screw provides circumferential positioning and rotational support. A bidirectional screw 31 is fixedly connected inside the annular sleeve 34. The bidirectional screw 31 serves as the transmission core for clamping adjustment. It drives the two clamping plates to open and close synchronously through its own rotation. The two sides of the bidirectional screw 31 are provided with opposite threaded grooves. The reverse thread layout can realize that a single screw drives the two clamping plates to move synchronously in opposite directions or in opposite directions, simplifying the adjustment operation steps. The threaded grooves on both sides of the two bidirectional screws 31 are threadedly connected to positioning lugs 32. The positioning lugs 32 serve as force transmission connectors between the screw and the clamping plates, converting the rotational motion of the screw into the linear clamping action of the clamping plates. The two positioning lugs 32 are fixedly connected to the outside of the two fixed clamping plates 30 respectively.

[0022] After the two cable sleeves 20 slide to the preset position of the part to be disconnected, the bidirectional screw 31 is rotated. With the help of the rotational support of the annular sleeve plate 34 in the fixed base plate 33, the bidirectional screw 31 rotates smoothly around its own axis. Since the two sides of the bidirectional screw 31 have threaded grooves with opposite directions of rotation, during the rotation, the positioning lugs 32 on both sides are driven to move towards each other along the screw axis, thereby driving the two fixed clamping plates 30 to move and clamp towards the surface of the cable sheath 10. As the bidirectional screw 31 continues to tighten, the inner clamping surfaces of the two fixed clamping plates 30 are tightly pressed against the outer wall of the cable sheath 10. The clamping friction forms a stable axial lock, which firmly fixes the cable sleeve 20 in the designated position of the cable sheath 10, preventing the cable sleeve from shifting during subsequent stripping and splicing operations, and ensuring positioning accuracy and operational stability.

[0023] The cable sleeve 20 has several moving auxiliary components inside. These components convert the sliding friction between the cable sleeve and the cable into rolling friction, reducing axial sliding resistance. Each moving auxiliary component includes a ball 40 and an inner cavity 41. The inner cavity 41 is located inside the cable sleeve 20, providing space for the ball and the elastic component. A groove 42 is provided inside the inner cavity 41, which radially limits the ball, preventing it from detaching from the inner cavity and allowing it to communicate with the inside of the cable sleeve 20. The ball 40 is rotatably connected inside the inner cavity 41. The side away from the inner cavity 41 is movably connected to the inside of the protrusion 42. The ball can roll freely to contact the cable sheath, realizing a rolling sliding support. A spring piece 43 is fixedly connected inside the inner cavity 41. The spring piece 43 is arranged in an arch shape inside the inner cavity 41. The arch structure can generate a continuous and stable elastic thrust, ensuring that the ball always fits the cable surface. The ball 40 is movably connected to the arched surface of the spring piece 43. The spring piece 43 continuously provides the ball 40 with an elastic force applied towards the surface of the cable sheath 10, so that the ball 40 can fit against the surface of the cable sheath 10.

[0024] During the process of adjusting the position of the two cable sleeves 20 along the axial direction of the cable sheath 10 by holding the connecting beam plate 22, the rolling balls 40 in each inner cavity 41 of the cable sleeve 20 move synchronously along the cable surface with the cable sleeve. The arched spring piece 43 continuously applies an elastic thrust towards the cable sheath 10 to the rolling balls 40, so that the rolling balls 40 are always tightly attached to the surface of the cable sheath 10 and roll freely in the inner cavity 41 with the movement of the cable sleeve. The convex groove 42 forms a radial limit on the rolling balls 40 to prevent the rolling balls from falling out of the inner cavity. Through the rolling contact of the rolling balls 40, the sliding friction between the cable sleeve and the cable sheath is converted into rolling friction, which greatly reduces the motion resistance when the cable sleeve slides axially, making the position adjustment operation smoother and less labor-intensive. At the same time, it avoids the inner wall of the cable sleeve directly scraping the cable sheath, causing surface wear, and effectively improves the smoothness of the cable sleeve position adjustment and the protection effect on the cable sheath.

[0025] Each sleeve 20 is equipped with a synchronous fixing component on its exterior. The synchronous fixing component can connect the sealing sleeve and the side of the sleeve as one unit, enhancing the installation stability of the sealing sleeve. Each synchronous fixing component includes a retaining plate 50, which serves as the mounting base for the synchronous fixing component and is fixed to the side of the sleeve to provide a support point. The retaining plate 50 is fixedly connected to the outside of the sleeve 20 on the side away from the connecting beam plate 22. A positioning pin 52 is fixedly connected to the upper end of the retaining plate 50. The positioning pin 52 serves as the rotation hinge shaft of the rotating insert plate, providing a swing fulcrum for the insert plate. A rotating synchronous insert plate 51 is rotatably connected to the outside of the positioning pin 52. The rotating synchronous insert plate 51 can swing around the pin shaft to adjust the angle to match the installation hole position of the sealing sleeve. The end of the rotating synchronous insert plate 51 away from the positioning pin 52 is provided with an insertion hole 53, which allows the fastening bolt to be inserted to achieve synchronous locking and fixing of the insert plate and the sealing sleeve.

[0026] After the two sealing semicircular rings of the sealing sleeve 23 are engaged and aligned, and the initial connection is completed, the rotating synchronous insert plate 51 on the card seat plate 50 is rotated around the positioning pin 52 so that the insertion hole 53 at the end of the rotating synchronous insert plate 51 is coaxially aligned with the bolt mounting hole on the side of the sealing semicircular ring. Then, the fastening bolt is passed through the insertion hole 53 and screwed into the corresponding screw hole of the sealing sleeve 23, so that the rotating synchronous insert plate 51 and the two sealing semicircular rings are synchronously locked into one piece. The insert plate structure on the side of the sleeve forms an additional lateral pull and fixation on the sealing sleeve, further restricting the axial movement and circumferential deflection of the sealing sleeve, strengthening the sleeve's stability outside the branch connector, ensuring that the sealing structure does not loosen or shift under long-term use, and continuously guaranteeing the sealing and protection effect.

[0027] Working principle: Step 1: Hold the connecting beam plate 22 to drive the two wire sleeves 20 to slide along the cable outer sheath 10 axially. The spring piece 43 pushes the rolling ball 40 to continuously roll against the outer sheath, effectively reducing the sliding resistance. After moving to the part to be split, the limit sleeves 21 on both sides accurately define the stripping range, and the operator can quickly complete the regular ring cutting and stripping by fitting the end face of the sleeve.

[0028] Step 2: Rotate the bidirectional screw 31, and drive the positioning ear seat 32 with the reverse threads on both sides to move the fixing clamp 30 to close in opposite directions, tightly pressing the surface of the cable outer sheath 10, and relying on the clamping friction to firmly lock the cable sleeve 20 in the designated position, so as to prevent the cable sleeve from shifting or deviating in subsequent operations.

[0029] Step 3: Insert the branch connector 14 into the stripped area to connect and initially fix the cable conductor 11. Then, fasten the two sealing semi-circular rings of the sealing sleeve 23 so that the sealing side ring 24 and the sealing gasket 25 form an interference seal with the limiting sleeve 21, thus forming a fully enclosed sealed insulation protection for the branch connection.

[0030] Step 4: Rotate the rotating synchronous insert plate 51 on the card seat plate 50 to align the end insertion hole 53 with the mounting hole of the sealing sleeve 23, insert the bolt to lock the insert plate and the sealing sleeve synchronously, forming a lateral traction fixation, further improving the sealing sleeve's fixation stability and preventing loosening and displacement during long-term use.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A longitudinally water-blocking waterproof overhead insulated conductor, comprising a cable sheath (10) and a cable conductor (11), characterized in that, The cable conductor (11) is a bundled conductor made of multiple metal single wires twisted together and housed inside the cable sheath (10). The outer periphery of the cable conductor (11) is covered with an insulation layer (12), and a stranded water-blocking yarn (13) is provided between the insulation layer (12) and the cable conductor (11). The stranded water-blocking yarn (13) fills the twisting gap of the cable conductor (11) and is distributed along the circumferential surface of the cable conductor (11) to form a longitudinal water-blocking barrier at the interface. A shunt sealing quick-connect assembly is provided on the outside of the cable sheath (10).

2. The longitudinal water-blocking waterproof overhead insulated conductor according to claim (1), characterized in that, The diversion sealing quick-connect assembly includes two wire sleeves (20), and the two wire sleeves (20) are fixedly connected to the outside of the two wire sleeves (20) for synchronous connection of the two wire sleeves (20); Each of the two cable sleeves (20) is fixedly connected to a limiting sleeve (21) on one side facing each other. The two cable sleeves (20) and the two limiting sleeves (21) are movably sleeved on the outside of the cable sheath (10).

3. The longitudinal water-blocking waterproof overhead insulated conductor according to claim 2, characterized in that, A sealing sleeve (23) is provided between the two limiting sleeves (21). One end of the sealing sleeve (23) is fixedly connected to the outside of the connecting beam plate (22) near the wire sleeve (20). The sealing sleeve (23) consists of two sealing semi-circular rings. The two sealing semi-circular rings are connected by a hinge at the end near the connecting beam plate (22). The two sealing semi-circular rings are connected and fixed by bolts. Sealing side rings (24) are fixedly connected to both sides of the outside of the two sealing semi-circular rings.

4. The longitudinal water-blocking waterproof overhead insulated conductor according to claim 3, characterized in that, Each of the two sealing side rings (24) is fixedly connected to a sealing gasket (25) on the opposite side. The sealing gasket (25) is used to make interference contact with the limiting sleeve (21) to increase the sealing performance inside the sealing sleeve (23).

5. A longitudinally water-blocking waterproof overhead insulated conductor according to claim 4, characterized in that, Locking components are provided on the opposite sides of the two sleeves (20); Each locking assembly includes two fixed clamping plates (30) and two fixed base plates (33). The two fixed base plates (33) are fixedly connected to the two sides of the outside of the sleeve (20). A circular sleeve plate (34) is rotatably connected inside each fixed base plate (33). A double-acting screw (31) is fixedly connected inside the circular sleeve plate (34). The two sides of the double-acting screw (31) are provided with opposite threaded grooves. The two threaded grooves on the two sides of the double-acting screw (31) are threadedly connected to positioning ears (32). The two positioning ears (32) are fixedly connected to the outside of the two fixed clamping plates (30). By rotating the double-acting screw (31), the two positioning ears (32) are driven to move towards each other. The two positioning ears (32) synchronously drive the two fixed clamping plates (30) to move towards each other and close together. By the closeness of the two fixed clamping plates (30), they are made to make close contact with the surface of the cable sheath (10), thereby firmly fixing the sleeve (20) to the outside of the cable sheath (10).

6. A longitudinally water-blocking waterproof overhead insulated conductor according to claim 5, characterized in that, The sleeve (20) is internally provided with several movement assist components; Each moving auxiliary component includes a ball (40) and an inner cavity (41). The inner cavity (41) is opened inside the sleeve (20). A groove (42) is opened inside the inner cavity (41) for communicating with the inside of the sleeve (20). The ball (40) is rotatably connected inside the inner cavity (41), and the side of the ball (40) away from the inside of the inner cavity (41) is movably connected inside the groove (42).

7. A longitudinally water-blocking waterproof overhead insulated conductor according to claim 6, characterized in that, The inner cavity (41) is fixedly connected to a spring piece (43). The spring piece (43) is arranged in an arch shape inside the inner cavity (41). The ball (40) is movably connected to the arched surface of the spring piece (43). The spring piece (43) continuously provides the ball (40) with elastic force applied to the surface of the cable outer sheath (10) so that the ball (40) can fit against the surface of the cable outer sheath (10).

8. A longitudinally water-blocking waterproof overhead insulated conductor according to claim 7, characterized in that, Each of the said wire sleeves (20) is provided with a synchronous fixing component on its exterior; Each synchronous fixing component includes a card seat plate (50), which is fixedly connected to the outside of the sleeve (20) on the side away from the connecting beam plate (22). The upper end of the card seat plate (50) is fixedly connected to a positioning pin (52), and the outside of the positioning pin (52) is rotatably connected to a rotating synchronous insert plate (51). The end of the rotating synchronous insert plate (51) away from the positioning pin (52) is provided with an insertion hole (53). After connecting the two sealing semi-circular rings inside the sealing sleeve (23), the bolt is passed through the insertion hole (53) outside the rotating synchronous insert plate (51) to make it synchronously connected and fixed with the two sealing semi-circular rings.

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