Cable connecting device

Abstract

The invention discloses a cable connecting device which comprises an outer cylinder body, connecting pieces are arranged at the two ends of the outer cylinder body respectively, the connecting pieces are rotatable, mounting holes used for fixing a cable are formed in the connecting pieces, the cable is inserted into the outer cylinder body through the mounting holes, and a conductor is arranged in the outer cylinder body. The part, located in the outer barrel, of the cable is connected with the conductor, a limiting piece is arranged at the port of the outer barrel, the limiting piece is connected with the connecting piece and the outer barrel, and the limiting piece is used for providing resistance for rotation of the connecting piece. The cable is fixed through the three-dimensional rotating connecting piece, relative movement of the cable and the middle connecting device is achieved, the influence of vibration, caused by external factors, of the cable on the connecting position is reduced, stress concentration of the connecting position is reduced, the fault rate is reduced, and the stability and safety of a cable line are improved. Moreover, resistance is provided through the limiting piece, the cable is prevented from moving freely, and the connection stability is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a cable connecting device. Background Art

[0002] The power system provides the necessary electricity support for people's production and life. The wide application of distribution cable lines has greatly promoted the development of the power system and the reliability of power supply. However, in the operation and maintenance of cable lines, the performance and reliability of cable intermediate connectors, as an important part of cable lines, are crucial to the stable operation of the entire power system.

[0003] In the related art, with the continuous expansion of 10kV distribution network cable lines, the frequency of use of intermediate connectors is increasing. The intermediate connector is designed as a rigid connection, that is, the two ends of the cable are tightly connected through a fixed mechanical structure. This design can ensure the stability and conductivity of the cable connection in the early stage, but there is mechanical stress concentration in the long-term operation of this design, which makes the connection part and the connector of the cable easily damaged, affecting the stability and safety of the cable line. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a cable connection device with higher flexibility.

[0006] The cable connection device of the embodiment of the present invention includes an outer cylinder, wherein the two ends of the outer cylinder in the length direction are respectively provided with connecting pieces, and the connecting pieces are rotatable around the center point of the port of the outer cylinder, and the connecting piece is provided with a mounting hole for fixing the cable, and the mounting hole is communicated with the central through hole of the outer cylinder so that the cable can be inserted into the outer cylinder through the mounting hole, and a conductor is provided in the outer cylinder, and the part of the cable located in the outer cylinder is connected to the conductor, and a limit piece is provided at the port of the outer cylinder, and the limit piece is connected to the connecting piece and the outer cylinder, and the limit piece is used to provide resistance to the rotation of the connecting piece.

[0007] The cable connection device of the embodiment of the present invention fixes the cable through a three-dimensionally rotating connection member, so that the cable and the intermediate connection device can move relative to each other, reduce the impact of vibration caused by external factors on the connection of the cable, reduce stress concentration at the connection, thereby reducing the failure rate and improving the stability and safety of the cable line. In addition, the limiter provides resistance to prevent the cable from moving randomly, further improving the stability of the connection.

[0008] In some embodiments, the outer cylinder includes a transmission section and connecting sections oppositely arranged on both sides of the transmission section, the cross-sectional area of ​​the connecting section is larger than the cross-sectional area of ​​the transmission section, the conductor passes through the connecting section along the axial direction of the outer cylinder so that the end of the conductor is located in the connecting section, and the connecting piece is arranged at the end of the connecting section away from the transmission section.

[0009] In some embodiments, the connecting member includes a rotating seat and a ball joint, the rotating seat is annular, the rotating seat is connected to the connecting section, an arc groove is provided on the inner wall of the rotating seat, a portion of the ball joint is disposed in the rotating seat and fits in the arc groove, and the mounting hole passes through the ball joint.

[0010] In some embodiments, the central axis of the rotating seat is coaxially arranged with the central axis of the connecting section, and the center point of the ball joint is located on the central axis of the mounting hole.

[0011] In some embodiments, the cross-sectional area of ​​the rotating seat is smaller than the cross-sectional area of ​​the connecting section, and there is a smooth transition between the rotating seat and the connecting section.

[0012] In some embodiments, the limiting member includes a spring, one end of the spring is connected to the inner circumferential wall of the connecting section, and the other end of the spring is connected to the ball joint.

[0013] In some embodiments, there are a plurality of springs, and the plurality of springs are spaced apart and distributed around the central axis of the connecting segment.

[0014] In some embodiments, the spring is arranged obliquely, and the angle between the extension direction of the spring and the axial direction of the connecting section is 60° to 80°.

[0015] In some embodiments, a wire hole is provided at the end of the conductor, so that the portion of the cable located in the outer cylinder can be tied to the conductor through the wire hole.

[0016] In some embodiments, the central axis of the conductor is coaxially arranged with the central axis of the outer cylinder, and the conductor is rotatably connected to the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic diagram of the structure of a cable connection device according to an embodiment of the present invention.

[0018] Figure 2 1 is a schematic diagram of the interior of a cable connecting device according to an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of a connecting piece of a cable connecting device according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of a limiter of a cable connection device according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 100-cable,

[0023] 1-outer cylinder, 11-transmission section, 12-connection section,

[0024] 2-connector, 21-swivel seat, 22-ball joint, 23-mounting hole,

[0025] 3-limiting piece, 31-spring,

[0026] 4- Conductor. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] The cable connecting device according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] like Figures 1 to 4 As shown, the cable connecting device according to the embodiment of the present invention comprises an outer cylinder 1.

[0030] Among them, the outer cylinder 1 is provided with connecting parts 2 at both ends in its length direction, and the connecting parts 2 can rotate around the center point of the port of the outer cylinder 1. That is, there are two connecting parts 2, and the two connecting parts 2 are respectively provided at the two ends of the outer cylinder 1, and the connecting parts 2 can rotate in three dimensions.

[0031] The connector 2 is provided with a mounting hole 23, the size of which matches the size of the cable 100, so that the cable 100 passes through the mounting hole 23 and is fixedly connected to the connector 2. The mounting hole 23 is communicated with the central through hole of the outer cylinder 1, so that the cable 100 is inserted into the outer cylinder 1 through the mounting hole 23. The outer cylinder 1 is provided with a conductor 4 (for transmitting power), and the portion of the cable 100 located in the outer cylinder 1 is connected to the conductor 4, so that the two sections of the cable 100 are connected and communicated.

[0032] It should be noted that the portion of the cable 100 in the mounting hole 23 is provided with sealing components such as a sealing gasket to prevent external factors (sand, water, etc.) from entering the interior of the outer cylinder 1 and causing safety accidents. Since the cable 100 is exposed to wind and rain for a long time, the vibration of the cable 100 will cause the mechanical structure of the connection to weaken. If the connection is a rigid connection, it is very easy to cause damage to the portion of the cable 100 in the mounting hole 23.

[0033] Therefore, the cable connecting device of the embodiment of the present invention fixes the cable 100 through the three-dimensionally rotating connecting member 2, so that the cable 100 and the intermediate connecting device can move relative to each other, reduce the influence of the vibration caused by external factors (strong wind, rain) on the connection of the cable 100, reduce the stress concentration at the connection, thereby reducing the failure rate and improving the stability and safety of the cable 100 line.

[0034] In addition, a stopper 3 is provided at the end of the outer cylinder 1, and the stopper 3 is connected to the connector 2 and the outer cylinder 1, and the stopper 3 is used to provide resistance to the rotation of the connector 2. It can be understood that the resistance provided by the stopper 3 can prevent the cable 100 from moving randomly, further improving the stability of the connection.

[0035] In some embodiments, Figure 1 and Figure 2 As shown, the outer cylinder 1 includes a transmission section 11 and a connection section 12 . The connection section 12 has two sections, which are respectively arranged on both sides of the transmission section 11 in an opposite manner.

[0036] Among them, the cross-sectional area of ​​the connecting section 12 is larger than the cross-sectional area of ​​the transmission section 11, the conductor 4 passes through the connecting section 12 along the axial direction of the outer cylinder 1 so that the end of the conductor 4 is located in the connecting section 12, and the connector 2 is arranged at the end of the connecting section 12 away from the transmission section 11.

[0037] Therefore, the size of the connecting section 12 is determined according to the size of the cable 100 to ensure that the cable 100 has enough space for movement in the connecting section 12 so that the cable 100 can extend into the outer cylinder 1 as much as possible, so that the cable 100 will not reach the pulling limit during movement.

[0038] In some embodiments, Figures 1 to 3 As shown, the connecting member 2 includes a rotating seat 21 and a ball joint 22 .

[0039] The rotating seat 21 is annular and connected to the connecting section 12 . An arc groove is provided on the inner wall of the rotating seat 21 . Part of the ball joint 22 is provided in the rotating seat 21 and fits in the arc groove. The mounting hole 23 passes through the ball joint 22 .

[0040] It can be understood that the connection point of the cable 100 is spherically hinged on the outer cylinder 1 by rotating the seat 21 and the ball joint 22, which has a simple structure and is convenient for processing and installation.

[0041] In some embodiments, Figure 2 As shown, the central axis of the rotating seat 21 is coaxially arranged with the central axis of the connecting section 12 , and the center point of the ball joint 22 is located on the central axis of the mounting hole 23 .

[0042] Thus, the coaxial design makes the entire structure more stable mechanically, reduces vibration and stress concentration caused by eccentricity, and thus improves overall stability and reliability. The coaxial setting means that the ball joint 22 can move more smoothly, reduces friction, helps to improve the load-bearing capacity of the rotating seat 21, and prolongs the service life of the ball joint 22 and the rotating seat 21.

[0043] In addition, the dynamic balance is optimized, the vibration and noise caused by imbalance are reduced, the wear caused by eccentric movement is reduced, the durability of the system is improved, the overall safety is improved, and the risk of failure is reduced.

[0044] Furthermore, if Figure 2 As shown, the cross-sectional area of ​​the rotating seat 21 is smaller than the cross-sectional area of ​​the connecting section 12 , and there is a smooth transition between the rotating seat 21 and the connecting section 12 .

[0045] It can be understood that the smooth transition design helps to reduce stress concentration caused by sudden changes in cross-section, thereby reducing the risk of fatigue damage to the rotating seat 21 and the connecting section 12 due to stress concentration.

[0046] Although the cross-sectional area of ​​the rotating seat 21 is small, the smooth transition design can improve the overall strength of the entire structure, make the connection more secure, make it more uniform when bearing loads, reduce potential damage caused by uneven loads, and improve the overall aesthetics of the product appearance.

[0047] Furthermore, the reduction in the cross-sectional area of ​​the rotating seat 21 helps to reduce the weight of the overall structure, utilize materials more efficiently, reduce material waste, and lower costs.

[0048] In some embodiments, Figures 2 to 4 As shown, the stopper 3 includes a spring 31, one end of which is connected to the inner circumferential wall of the connecting section 12, and the other end of which is connected to the ball joint 22. Alternatively, the stopper 3 includes a torsion spring, which is arranged in the rotating seat 21 and connected to the ball joint 22.

[0049] It is understandable that the elastic component is added to the ball joint 22 to limit the rotation range of the ball joint 22 by providing resistance, thereby preventing it from excessive rotation, thereby protecting the ball joint 22 and the cable 100 from damage.

[0050] Furthermore, the resistance of the spring 31 provides a certain damping effect for the ball joint 22, which helps to reduce excessive swinging due to rapid movement or impact, and improves overall durability and safety.

[0051] Furthermore, there are multiple springs 31, and the multiple springs 31 are spaced apart around the central axis of the connecting section 12, ensuring that the ball joint 22 will not rotate when the cable 100 is not subjected to external force, and the cable 100 is always in a horizontal state, thereby improving the reliability of the connecting device.

[0052] In some embodiments, Figure 2 As shown, the spring 31 is tilted, and the tilted spring 31 can provide more uniform resistance during the rotation of the ball joint 22. In addition, by adjusting the tilt angle of the spring 31, the resistance of the spring 31 to the rotation of the ball joint 22 can be changed.

[0053] Preferably, the angle between the extension direction of the spring 31 and the axial direction of the connecting section 12 is 60° to 80°.

[0054] It is understandable that within the range of 60° to 80°, the inclination angle of the spring 31 helps to achieve a dynamic balance between the force of the spring 31 and the damping effect, making the movement of the ball joint 22 more stable. In addition, the contact force between the spring 31 and the surface of the ball joint 22 can generate a larger vertical component, which is conducive to providing sufficient support force and stability.

[0055] In addition, limited by the shape of the outer cylinder 1, the spring 31 is tilted and arranged within a preset range, so that the internal structure is more compact, the spatial layout is optimized, and it is adapted to limited space conditions.

[0056] In some embodiments, Figure 2 As shown, a wire hole is provided at the end of the conductor 4 so that the portion of the cable 100 located in the outer cylinder 1 can be tied to the conductor 4 through the wire hole.

[0057] It is understandable that the cable 100 is connected to the conductor 4 by binding, allowing the cable 100 to move freely within a certain range, thereby further adapting to the technical feature that the connector 2 can rotate in three dimensions.

[0058] Alternatively, if Figure 2 As shown, the central axis of the conductor 4 is coaxially arranged with the central axis of the outer cylinder 1, and the conductor 4 is rotatably connected to the outer cylinder 1, which further improves the feasibility of the cable 100 so that the cable connection device of the embodiment of the present invention has higher flexibility.

[0059] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A cable connection device, characterized in that: The utility model comprises an outer cylinder, wherein both ends of the outer cylinder in the length direction are respectively provided with connecting pieces, the connecting piece can rotate around the center point of the port of the outer cylinder, the connecting piece is provided with a mounting hole for fixing the cable, the mounting hole is communicated with the central through hole of the outer cylinder, so that the cable can be inserted into the outer cylinder through the mounting hole, the outer cylinder is provided with a conductor, the part of the cable located in the outer cylinder is connected with the conductor, a limiting piece is provided at the port of the outer cylinder, the limiting piece is connected with the connecting piece and the outer cylinder, and the limiting piece is used to provide resistance for the rotation of the connecting piece.

2. The cable connection device according to claim 1, characterized in that: The outer cylinder includes a transmission section and connecting sections arranged opposite to each other on both sides of the transmission section, the cross-sectional area of ​​the connecting section is larger than the cross-sectional area of ​​the transmission section, the conductor passes through the connecting section along the axial direction of the outer cylinder so that the end of the conductor is located in the connecting section, and the connecting piece is arranged at the end of the connecting section away from the transmission section.

3. The cable connection device according to claim 2, characterized in that: The connecting member includes a rotating seat and a ball joint. The rotating seat is annular and connected to the connecting section. An arc groove is provided on the inner circumferential wall of the rotating seat. Part of the ball joint is arranged in the rotating seat and fits in the arc groove. The mounting hole passes through the ball joint.

4. The cable connection device according to claim 3, characterized in that: The central axis of the rotating seat is coaxially arranged with the central axis of the connecting section, and the center point of the ball joint is located on the central axis of the mounting hole.

5. The cable connection device according to claim 3, characterized in that: The cross-sectional area of ​​the rotating seat is smaller than the cross-sectional area of ​​the connecting section, and there is a smooth transition between the rotating seat and the connecting section.

6. The cable connection device according to claim 3, characterized in that: The limiting member comprises a spring, one end of the spring is connected to the inner peripheral wall of the connecting section, and the other end of the spring is connected to the ball joint.

7. The cable connection device according to claim 6, characterized in that: There are a plurality of springs, and the plurality of springs are distributed at intervals around the central axis of the connecting section.

8. The cable connection device according to claim 6, characterized in that: The spring is arranged obliquely, and the angle between the extending direction of the spring and the axial direction of the connecting section is 60° to 80°.

9. The cable connection device according to claim 1, characterized in that: The end of the conductor is provided with a wire hole, so that the portion of the cable located in the outer cylinder can be tied to the conductor through the wire hole.

10. The cable connection device according to claim 8, characterized in that: The central axis of the conductor is coaxially arranged with the central axis of the outer cylinder, and the conductor is rotatably connected to the outer cylinder.

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