Low-altitude economic cable connecting device

Abstract

The invention is applicable to the technical field of cable connection, and provides a low-altitude economic cable connecting device, which comprises a device main body, a plurality of arc-shaped grooves for cable conductors to insert are formed in two sides of the middle of the device main body, a plurality of conductive seats are circumferentially distributed in the middle of the device main body and are connected with the arc-shaped grooves, and a plurality of positioning grooves for limiting an inner sheath are formed in two ends of the device main body. The built-in elastic supporting assembly ensures the stability of the inner sheath; fixed connection cylinders are installed on the two sides of the device body, end fixing pieces are arranged at the ends of the fixed connection cylinders and connected to a cable outer sheath in a sleeving mode, and in the connecting process of the fixed connection cylinders and the device body, the end fixing pieces are pushed to fasten the outer sheath and drive the outer sheath to move towards the device body. Limiting fixing assemblies are arranged on the two sides of the middle of the device body to limit rotation of the fixed connection cylinder and abut against the fixed conductor. According to the invention, the plugging stability of the conductor is ensured through the arc-shaped groove and the elastic supporting structure, and the cable connection reliability and the structural stability are significantly improved by combining the dual-fixing sheath and anti-drop design of the fixed connection cylinder and the limiting fixing assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable connection, and particularly relates to a cable connection device for low-altitude economy. Background Art

[0002] In modern low-altitude economic applications, the reliability and safety of cable connections are crucial. Traditional cable connection methods usually rely on simple mechanical fastening or welding methods, which are not only complex and time-consuming to operate, but also difficult to ensure stable electrical connection performance. With the development of the low-altitude economic field, the demand for efficient, stable and easy-to-maintain cable connection solutions is increasing day by day.

[0003] To solve the above problems, some improved cable connection devices have gradually emerged on the market. They enhance the connection stability by introducing elastic support components and multi-point fixing designs. However, these existing technologies still have some limitations, such as easy loosening, complex installation process, etc. Especially in low-altitude application scenarios, the cables need to withstand high mechanical stress and frequent environmental changes. Therefore, a connection device that can provide higher stability and reliability is needed to overcome the deficiencies in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide a cable connection device for low-altitude economy, aiming to solve the problems mentioned in the above background art.

[0005] The present invention is implemented as follows. A cable connection device for low-altitude economy includes a device main body, and further includes: Arc-shaped grooves. A plurality of arc-shaped grooves for inserting the conductors of the cable are circumferentially distributed on both sides of the middle part of the device main body. A plurality of conductive seats are also circumferentially distributed in the middle part of the device main body. The two ends of the conductive seats are correspondingly connected to the arc-shaped grooves. When the conductors are inserted into the arc-shaped grooves, the conductors corresponding to both sides of the device main body are electrically connected through the conductive seats; Positioning grooves. A plurality of positioning grooves for limiting the inner sheath of the cable are circumferentially distributed at both ends of the device main body. A support component for elastically supporting the inner sheath is installed in the positioning grooves; Fixed connection cylinders. Removable fixed connection cylinders for fixing the inner sheath in the positioning grooves are installed on both sides of the device main body. An end fixing member is also installed at one end of the fixed connection cylinder away from the device main body. The end fixing member is sleeved on the outer sheath of the cable. And during the process of connecting the fixed connection cylinder with the device main body, the fixed connection cylinder is also used to push the end fixing member to abut and fix against the outer sheath, and drive the outer sheath to move towards the device main body; A limiting and fixing assembly. Limiting and fixing assemblies are also installed on both sides of the middle part of the device body. After the conductor is inserted into the arc-shaped groove and the fixing cylinder is installed, the limiting and fixing assembly is used to limit the rotation of the fixing cylinder and abut and fix the conductor at the same time.

[0006] A further technical solution is that the arc-shaped groove adopts a circular arc structure with its inner end facing the middle of the device body; both ends of the conductive seat are connected to the inner end of the arc-shaped groove and the side of the arc-shaped groove close to the middle of the device body.

[0007] A further technical solution is that the diameters of both ends of the device body are smaller than the diameter of its middle part, and the two ends of the device body are rounded; the cross-section of the positioning groove is semi-circular. The support assembly includes a second spring and a support block. A plurality of support cavities corresponding to and communicating with the positioning groove are circumferentially distributed on the inner sides of both ends of the device body. A support block for supporting the inner sheath is slidably arranged in the support cavity. One end of the support block close to the positioning groove has a middle arc-shaped concave structure. A plurality of second springs for elastically supporting the support block are also installed in the support cavity.

[0008] A further technical solution is that the limiting and fixing assembly includes a push ring, an auxiliary ring, a first spring and an insulating fixing rod. An auxiliary ring is fixedly installed in the middle of the device body. Activity openings are provided on both sides of the middle of the device body corresponding to the arc-shaped groove. The inner end of the activity opening is connected to the side of the inner end of the arc-shaped groove far from the middle of the device body. An insulating fixing rod is arranged in the activity opening. A first spring for elastically supporting the insulating fixing rod is also arranged in the activity opening. Push rings fixedly connected to the insulating fixing rod are slidably arranged on both sides of the middle of the device body; Extension grooves are also provided on both sides of the middle of the device body. The extension grooves communicate with the activity openings. An extension ring capable of sliding and rotatingly connecting with the extension grooves is fixed at one end of the fixing cylinder close to the device body. A plurality of arc-shaped limiting openings are circumferentially distributed at one end of the extension ring far from the fixing cylinder; After the fixing cylinder is completely abutted against the device body, the extension ring extends into the activity opening. When there is no external force, under the elastic force of the first spring, the insulating fixing rod abuts in the limiting opening of the extension ring, and at the same time, the end of the insulating fixing rod abuts against the conductor in the arc-shaped groove.

[0009] Further technical solution: The end fixing member includes a first end ring, a fastening piece, an intermediate cylinder, and a second end ring. One end of the intermediate cylinder close to the device body is fixed with the second end ring, and the other end of the intermediate cylinder is fixed with the first end ring. A plurality of openings are circumferentially distributed on the intermediate cylinder. A fastening piece is arranged in the opening. One end of the fastening piece is fixedly connected to the first end ring, and the other end of the fastening piece protrudes from the surface of the intermediate cylinder and is elastically arranged. An arc-shaped protruding portion is further arranged on the inner side of the fastening piece. One end of the connecting cylinder away from the device body is sleeved on the intermediate cylinder, and the diameter of the end of the connecting cylinder is smaller than the diameters of the first end ring and the second end ring. During the connection process between the connecting cylinder and the device body, the connecting cylinder is further used to push the fastening piece of the end fixing member to contract inward, and make the arc-shaped protruding portion abut and fix with the outer sheath. By using the limit of the fastening piece, the connecting cylinder drives the outer sheath to move towards the device body.

[0010] Further technical solution: A stepped fixing port is further opened at one end of the intermediate cylinder away from the device body. A fixing bolt for fixing the outer sheath of the cable is arranged in the stepped fixing port, and the screw rod of the fixing bolt is in threaded connection with the inner hole of the stepped fixing port, and the nut of the fixing bolt is accommodated in the outer hole of the stepped fixing port.

[0011] Further technical solution: Connecting threads for threaded connection with the connecting cylinder are arranged on the outer sides of both ends of the device body; Anti-slip threads are further arranged on the surface of the connecting cylinder; One end of the connecting cylinder away from the device body is also chamfered.

[0012] A low-altitude economy cable connection device provided by the present invention has the following beneficial effects: By opening an arc-shaped arc-shaped groove, it is beneficial to ensure the stability and the reliability of electrical connection through a certain deformation after the conductor is inserted.

[0013] The inner sheath can be limited by the positioning groove, and the inner sheath can be elastically supported in cooperation with the support assembly. After the connecting cylinder is locked, the inner sheath can be ensured to be in a stable state to avoid the conductor from falling off.

[0014] Through the arrangement of the connecting cylinder and the end fixing member, during the connection process between the connecting cylinder and the device body, the connecting cylinder is further used to push the end fixing member to abut and fix with the outer sheath, and drive the outer sheath to move towards the device body, so that the outer sheath can be further tightened and fixed, improving the stability and reliability of the connection.

[0015] In addition, through the arranged limit fixing assembly, after the conductor is inserted into the arc-shaped groove and the connecting cylinder is installed, the limit fixing assembly is used to limit the rotation of the connecting cylinder and abut and fix the conductor at the same time, that is, further ensuring the stability performance of the conductor and the anti-detachment performance of the connecting cylinder, making the cable connection more reliable.

[0016] In summary, the present invention ensures the stability of conductor insertion through the arc-shaped groove and the elastic support structure. By combining the fixed connection cylinder and the limit fixing component to double-fix the sheath and the anti-detachment design, the reliability of cable connection and the structural stability are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of the low-altitude economy cable connection device provided by an embodiment of the present invention; Figure 2 is Figure 1 an enlarged structural diagram of part A in; Figure 3 FIG. is an isometric view of the low-altitude economy cable connection device provided by an embodiment of the present invention; Figure 4 is Figure 3 an enlarged structural diagram of part B in; Figure 5 FIG. is a schematic structural diagram of the left part of the low-altitude economy cable connection device provided by an embodiment of the present invention with the fixed connection cylinder removed; Figure 6 FIG. is a schematic structural diagram of the middle fixed part of the low-altitude economy cable connection device provided by an embodiment of the present invention; Figure 7 is Figure 6 the main sectional view structure diagram of.

[0018] In the figure: 1 - outer sheath, 2 - end fixing piece, 3 - fixed connection cylinder, 4 - device main body, 5 - push ring, 6 - auxiliary ring, 7 - movable opening, 8 - spring one, 9 - anti-slip pattern, 10 - stepped fixing opening, 11 - fixing bolt, 12 - inner sheath, 13 - conductor, 14 - support cavity, 15 - spring two, 16 - support block, 17 - insulating fixing rod, 18 - limit opening, 19 - extension ring, 20 - arc-shaped groove, 21 - end ring one, 22 - fastening piece, 23 - intermediate cylinder, 24 - end ring two, 25 - opening, 26 - positioning groove, 27 - connection thread, 28 - arc-shaped protruding part, 29 - conductive seat, 30 - extension groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0021] As Figure 1 , Figures 3 - 5 shown, a low-altitude economy cable connection device provided by an embodiment of the present invention includes a device main body 4, and further includes: Arc-shaped grooves 20. A plurality of arc-shaped grooves 20 for inserting the conductors 13 of the cable are circumferentially distributed on both sides of the middle part of the device main body 4. A plurality of conductive seats 29 are also circumferentially distributed in the middle of the device main body 4. Both ends of the conductive seat 29 are correspondingly connected to the arc-shaped grooves 20. When the conductor 13 is inserted into the arc-shaped groove 20, the conductors 13 corresponding to both sides of the device main body 4 are electrically connected through the conductive seat 29; Positioning grooves 26. A plurality of positioning grooves 26 for limiting the inner sheath 12 of the cable are circumferentially distributed at both ends of the device main body 4. A support assembly for elastically supporting the inner sheath 12 is installed in the positioning groove 26; Fixed connection cylinders 3. Removable fixed connection cylinders 3 for fixing the inner sheath 12 in the positioning groove 26 are installed on both sides of the device main body 4. An end fixing member 2 is further installed at one end of the fixed connection cylinder 3 away from the device main body 4. The end fixing member 2 is sleeved on the outer sheath 1 of the cable. During the connection process of the fixed connection cylinder 3 and the device main body 4, the fixed connection cylinder 3 is also used to push the end fixing member 2 to abut and fix against the outer sheath 1, and drive the outer sheath 1 to move towards the device main body 4; Limit and fixation assembly. A limit and fixation assembly is also installed on both sides of the middle part of the device main body 4. After the conductor 13 is inserted into the arc-shaped groove 20 and the fixed connection cylinder 3 is installed, the limit and fixation assembly is used to simultaneously limit the rotation of the fixed connection cylinder 3 and abut and fix the conductor 13.

[0022] In the embodiment of the present invention, by providing the arc-shaped arc-shaped grooves 20, it is beneficial to ensure the stability and the reliability of electrical connection through a certain deformation after the conductors 13 are inserted; the inner sheath 12 can be limited through the positioning grooves 26, and the support assembly can elastically support the inner sheath 12. In this way, after the fixed connection cylinder 3 is locked, the inner sheath 12 can be ensured to be in a stable state, avoiding the conductors 13 from falling off; through the arrangement of the fixed connection cylinder 3 and the end fixing member 2, during the connection process of the fixed connection cylinder 3 and the device main body 4, the fixed connection cylinder 3 is also used to push the end fixing member 2 to abut and fix against the outer sheath 1, and drive the outer sheath 1 to move towards the device main body 4, so that the outer sheath 1 can be further tightened and fixed, improving the stability and reliability of the connection. In addition, through the arranged limit and fixation assembly, after the conductor 13 is inserted into the arc-shaped groove 20 and the fixed connection cylinder 3 is installed, the limit and fixation assembly is used to simultaneously limit the rotation of the fixed connection cylinder 3 and abut and fix the conductor 13, that is, further ensuring the stable performance of the conductor 13 and the anti-detachment performance of the fixed connection cylinder 3, making the cable connection more reliable.

[0023] Such as Figures 3 - 5As shown, as a preferred embodiment of the present invention, the arc-shaped groove 20 adopts a circular arc structure with the inner end facing the middle of the device body 4. The cross-section of the arc-shaped groove 20 is not limited, preferably circular, and can also be arranged in other shapes as required. There is no limitation on the conductive seat 29 either. Preferably, both ends of the conductive seat 29 are connected to the inner end of the arc-shaped groove 20 and the side of the arc-shaped groove 20 close to the middle of the device body 4 to ensure the reliability of the connection.

[0024] The diameters of both ends of the device body 4 are smaller than the diameter of its middle part, and both ends of the device body 4 are rounded to facilitate the reliable installation of the fixing cylinder 3; the cross-section of the positioning groove 26 is semi-circular. The support assembly includes a second spring 15 and a support block 16. A plurality of support cavities 14 corresponding to and communicating with the positioning groove 26 are circumferentially distributed and opened on the inner sides of both ends of the device body 4. A support block 16 for supporting the inner sheath 12 is slidably arranged in the support cavity 14. One end of the support block 16 close to the positioning groove 26 has a middle arc-shaped concave structure to facilitate the reliable positioning of the inner sheath 12. A plurality of second springs 15 for elastically supporting the support block 16 are also installed in the support cavity 14 to ensure the elastic support effect of the support block 16 on the inner sheath 12.

[0025] As Figure 1 、 Figures 3 - 5 As shown, as a preferred embodiment of the present invention, the limit fixing assembly includes a push ring 5, an auxiliary ring 6, a first spring 8 and an insulating fixing rod 17. An auxiliary ring 6 is fixedly installed in the middle of the device body 4. Activity openings 7 are correspondingly opened on both sides of the middle of the device body 4 corresponding to the arc-shaped groove 20. The inner end of the activity opening 7 is connected to the side of the inner end of the arc-shaped groove 20 far from the middle of the device body 4. An insulating fixing rod 17 is arranged in the activity opening 7, and a first spring 8 for elastically supporting the insulating fixing rod 17 is also arranged in the activity opening 7. Push rings 5 fixedly connected to the insulating fixing rod 17 are slidably arranged on both sides of the middle of the device body 4; Extension grooves 30 are also opened on both sides of the middle of the device body 4, and the extension grooves 30 communicate with the activity openings 7. An extension ring 19 that can be slidably and rotatably connected to the extension grooves 30 is fixed to one end of the fixing cylinder 3 close to the device body 4. A plurality of arc-shaped limit openings 18 are circumferentially distributed at one end of the extension ring 19 far from the fixing cylinder 3; When the fixing cylinder 3 is completely abutted against the device body 4, the extension ring 19 extends into the activity opening 7, and when there is no external force, under the elastic force of the first spring 8, the insulating fixing rod 17 abuts in the limit opening 18 of the extension ring 19, and at the same time, the end of the insulating fixing rod 17 abuts against the conductor 13 in the arc-shaped groove 20, so as to realize the restriction of the rotation of the fixing cylinder 3 and the auxiliary fixation of the conductor 13, and improve the reliability of the installation connection.

[0026] It should be noted that as many limiting ports 18 as needed can be arranged as required. This is more conducive to the insulating fixing rod 17 being clamped in the limiting port 18, improving the smoothness of the clamping and reducing the operation difficulty. Additionally, even if the insulating fixing rod 17 cannot be clamped in the limiting port 18, after the fixing cylinder 3 experiences slight loosening and rotation, the insulating fixing rod 17 can be clamped in the limiting port 18 under the elastic force of the first spring 8, thereby restricting the rotation of the fixing cylinder 3, with high reliability and meeting the usage requirements.

[0027] As Figures 1 - 2 , Figures 5 - 7 shown, as a preferred embodiment of the present invention, the end fixing member 2 includes a first end ring 21, a fastening piece 22, an intermediate cylinder 23, and a second end ring 24. A second end ring 24 is fixed to one end of the intermediate cylinder 23 close to the device main body 4, and a first end ring 21 is fixed to the other end of the intermediate cylinder 23. A plurality of openings 25 are circumferentially distributed on the intermediate cylinder 23, and a fastening piece 22 is provided in the opening 25. One end of the fastening piece 22 is fixedly connected to the first end ring 21, and the other end of the fastening piece 22 protrudes from the surface of the intermediate cylinder 23 and is elastically arranged. An arc-shaped protruding portion 28 is further provided on the inner side of the fastening piece 22. The end of the fixing cylinder 3 away from the device main body 4 is sleeved on the intermediate cylinder 23, and the diameter of the end of the fixing cylinder 3 is smaller than the diameters of the first end ring 21 and the second end ring 24, ensuring that the fixing cylinder 3 and the end fixing member 2 cannot be separated and improving the reliability.

[0028] During the connection process of the fixing cylinder 3 and the device main body 4, the fixing cylinder 3 is further used to push the fastening piece 22 of the end fixing member 2 to contract inward, and make the arc-shaped protruding portion 28 abut and fix against the outer sheath 1. By using the limit of the fastening piece 22, the fixing cylinder 3 drives the outer sheath 1 to move towards the device main body 4.

[0029] Preferably, in order to make the end fixing member 2 have a certain fixing effect when sleeved on the outer sheath 1 of the cable, a stepped fixing port 10 is further opened at one end of the intermediate cylinder 23 away from the device main body 4. A fixing bolt 11 for fixing the outer sheath 1 of the cable is provided in the stepped fixing port 10, and the screw of the fixing bolt 11 is threadedly connected to the inner hole of the stepped fixing port 10, and the nut of the fixing bolt 11 is accommodated in the outer hole of the stepped fixing port 10, achieving the purpose of hidden installation of the fixing bolt 11 and avoiding affecting the fixing cylinder 3.

[0030] Preferably, connection threads 27 for threaded connection with the fixing cylinder 3 are provided on the outer sides of both ends of the device main body 4; in order to facilitate the rotation of the fixing cylinder 3, anti-slip patterns 9 are further provided on the surface of the fixing cylinder 3; in order to improve the matching effect between the fixing cylinder 3 and the end fixing member 2 and reduce the friction between the fixing cylinder 3 and the fastening piece 22 of the end fixing member 2, the end of the fixing cylinder 3 away from the device main body 4 is also subjected to a chamfering treatment.

[0031] In the above embodiments of the present invention, a cable connection device for low-altitude economy is provided, and the working principle is summarized as follows: The conductor 13 of the cable is inserted into the arc-shaped grooves 20 opened on both sides of the device body 4. The arc-shaped grooves 20 are designed in a circular arc shape, which helps to improve the stability of the inserted conductor 13 and the reliability of the electrical connection, and the electrical connection is realized through the conductive seat 29.

[0032] The inner sheath 12 of the cable is placed in the positioning groove 26 and is elastically supported by a support assembly (including the second spring 15 and the support block 16) to ensure the stability of the inner sheath 12 and prevent the conductor 13 from falling off. One end of the support block 16 close to the positioning groove 26 has a middle arc-shaped concave structure, which is conducive to the reliable positioning of the inner sheath 12.

[0033] The fixing cylinder 3 is installed at both ends of the device body 4 and is equipped with end fixing parts 2. When the fixing cylinder 3 is connected to the device body 4, it will push the end fixing part 2 to contract inward, so that the fastening piece 22 thereof is in close contact with the outer sheath 1 of the cable, thereby realizing the firm fixation of the outer sheath 1. In addition, by rotating the fixing cylinder 3, the outer sheath 1 can be further tightened to enhance the overall connection stability.

[0034] The limit fixing assembly includes a push ring 5, an auxiliary ring 6, a first spring 8 and an insulating fixing rod 17. After the fixing cylinder 3 is completely abutted against the device body 4, the limit port 18 on the extension ring 19 cooperates with the insulating fixing rod 17. Under the action of the first spring 8, the insulating fixing rod 17 is clamped into the limit port 18, which not only prevents the fixing cylinder 3 from rotating but also provides additional fixation for the conductor 13, improving the safety and reliability of the connection.

[0035] In addition, the fixing bolt 11 in the end fixing part 2 can be tightened to further reinforce the position of the outer sheath 1 without affecting the operation of the fixing cylinder 3. A stepped fixing port 10 is also opened at one end of the middle cylinder 23 away from the device body 4. The screw rod of the fixing bolt 11 is threadedly connected to the inner hole of the stepped fixing port 10, and the nut of the fixing bolt 11 is accommodated in the outer hole of the stepped fixing port 10, achieving the purpose of hidden installation of the fixing bolt 11 and avoiding affecting the fixing cylinder 3.

[0036] In summary, the present invention uses the designs of the arc-shaped groove 20, the positioning groove 26, the support assembly, the fixing cylinder 3, the end fixing part 2 and the limit fixing assembly, etc., to ensure the stability and reliability of the cable connection, and is particularly suitable for low-altitude economy application scenarios that require high safety standards.

[0037] The circuits, electronic components and modules involved are all prior arts and can be fully realized by those skilled in the art without further elaboration. The content protected by the present invention does not involve improvements to software and methods either.

[0038] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0039] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A low altitude economic cable connection device, comprising a device body (4), characterized in that: Also includes: The arc-shaped groove (20) is provided with a plurality of arc-shaped grooves (20) for inserting the conductors (13) of the cable on both sides of the middle of the device body (4) in a circumferentially distributed manner. The middle of the device body (4) is also provided with a plurality of conductive seats (29) in a circumferentially distributed manner. The two ends of the conductive seats (29) are correspondingly connected to the arc-shaped groove (20). When the conductor (13) is inserted into the arc-shaped groove (20), the corresponding conductors (13) on both sides of the device body (4) are electrically connected through the conductive seats (29); Positioning grooves (26), wherein a plurality of positioning grooves (26) for limiting the inner sheath (12) of the cable are circumferentially distributed at both ends of the device body (4), and a support component for elastically supporting the inner sheath (12) is installed in the positioning groove (26); A connecting tube (3), wherein the two sides of the device body (4) are detachably provided with connecting tubes (3) for fixing the inner sheath (12) in the positioning groove (26); an end of the connecting tube (3) away from the device body (4) is also provided with an end fixing member (2); the end fixing member (2) is sleeved on the outer sheath (1) of the cable; and during the process of connecting the connecting tube (3) and the device body (4), the connecting tube (3) is also used to push the end fixing member (2) to abut and fix the outer sheath (1), and to drive the outer sheath (1) to move in a direction close to the device body (4); A limit fixing assembly is further installed on both sides of the middle of the device body (4); when the conductor (13) is inserted into the arc groove (20) and the fixing tube (3) is installed, the limit fixing assembly is used to simultaneously limit the rotation of the fixing tube (3) and abut and fix the conductor (13).

2. The low altitude economic cable connection device according to claim 1, characterized in that: The arc-shaped groove (20) adopts an arc-shaped structure with the inner end facing the middle of the device body (4); The two ends of the conductive seat (29) are connected to the inner end of the arc-shaped groove (20) and one side of the arc-shaped groove (20) close to the middle of the device body (4).

3. The low altitude economic cable connection device according to claim 1, characterized in that: The diameters of both ends of the device body (4) are smaller than the diameter of the middle thereof, and both ends of the device body (4) are chamfered; The cross section of the positioning groove (26) is semicircular; The support assembly comprises a second spring (15) and a support block (16); a plurality of support cavities (14) corresponding to and connected to the positioning grooves (26) are circumferentially distributed on the inner sides of both ends of the device body (4); a support block (16) for supporting the inner sheath (12) is slidably arranged in the support cavity (14); one end of the support block (16) close to the positioning groove (26) is a central arc-shaped concave structure; a plurality of second springs (15) for elastically supporting the support block (16) are also installed in the support cavity (14).

4. The low altitude economic cable connection device according to any one of claims 1 to 3, characterized in that: The position limiting and fixing assembly comprises a push ring (5), an auxiliary ring (6), a spring 1 (8) and an insulating fixing rod (17); An auxiliary ring (6) is fixedly mounted in the middle of the device body (4); movable openings (7) are provided on both sides of the middle of the device body (4) corresponding to the arc-shaped groove (20); the inner end of the movable opening (7) is connected to a side of the inner end of the arc-shaped groove (20) away from the middle of the device body (4); An insulating fixing rod (17) is provided in the movable opening (7), and a spring (8) for elastically supporting the insulating fixing rod (17) is also provided in the movable opening (7); Push rings (5) fixedly connected to insulating fixing rods (17) are slidably provided on both sides of the middle of the device body (4); Extension grooves (30) are also provided on both sides of the middle of the device body (4), the extension grooves (30) are communicated with the movable opening (7), an extension ring (19) that can be slidably and rotatably connected to the extension groove (30) is fixed to one end of the connecting tube (3) close to the device body (4), and a plurality of arc-shaped limiting openings (18) are circumferentially distributed on one end of the connecting tube (3) away from the connecting tube (3); When the connecting tube (3) is completely in contact with the device body (4), the extension ring (19) extends into the movable opening (7), and when there is no external force, the insulating fixing rod (17) is in contact with the limiting opening (18) of the extension ring (19) under the elastic force of the spring 1 (8), and the end of the insulating fixing rod (17) is in contact with the conductor (13) in the arc groove (20).

5. The low altitude economic cable connection device according to claim 1 or 3, characterized in that: The end fixing member (2) comprises an end ring 1 (21), a fastening plate (22), an intermediate tube (23) and an end ring 2 (24); The middle tube (23) has an end ring 2 (24) fixed to one end close to the device body (4), and an end ring 1 (21) fixed to the other end of the middle tube (23). The middle tube (23) has a plurality of openings (25) distributed circumferentially, and a fastening sheet (22) is provided in the opening (25). One end of the fastening sheet (22) is fixedly connected to the end ring 1 (21), and the other end of the fastening sheet (22) protrudes from the surface of the middle tube (23) and is elastically arranged. The inner side of the fastening sheet (22) is also provided with an arc-shaped protrusion (28); One end of the connecting tube (3) away from the device body (4) is sleeved on the intermediate tube (23), and the diameter of the end of the connecting tube (3) is smaller than the diameters of the end ring 1 (21) and the end ring 2 (24); During the process of connecting the connecting tube (3) with the device body (4), the connecting tube (3) is also used to push the fastening piece (22) of the end fixing member (2) to retract inwardly, and to make the arc-shaped protrusion (28) abut and fix with the outer sheath (1), and by utilizing the limiting function of the fastening piece (22), the connecting tube (3) drives the outer sheath (1) to move in a direction close to the device body (4).

6. The low altitude economic cable connection device according to claim 5, characterized in that: The middle tube (23) is also provided with a stepped fixing opening (10) at one end away from the device body (4), and a fixing bolt (11) for fixing the outer sheath (1) of the cable is provided in the stepped fixing opening (10); The screw rod of the fixing bolt (11) is threadedly connected to the inner hole of the stepped fixing opening (10), and the nut of the fixing bolt (11) is accommodated in the outer hole of the stepped fixing opening (10).

7. The low altitude economic cable connection device according to claim 5, characterized in that: The outer sides of both ends of the device body (4) are provided with connecting threads (27) for threaded connection with the connecting cylinder (3); The surface of the connecting tube (3) is also provided with anti-slip grooves (9); The end of the connecting tube (3) away from the device body (4) is also rounded.

Images