Cable inner cone plug-in terminal

Abstract

The invention discloses a cable inner cone plug-in terminal, which relates to the technical field of cable terminals and comprises a stress cone shell, a connecting flange is arranged at the bottom of the stress cone shell, the other end of the connecting flange is fixedly connected with a tail pipe, and a clamping assembly is arranged in the tail pipe. After the cable extends into the tail pipe, pressure is continuously applied to the cable, the contact end of the cable abuts against the surface of the conductive end, the conductive end slides on the outer wall of the conductive column through the pressure of inward pushing of the cable, and the rotating arms rotationally connected with the interiors of the clamping plates located on the two sides of the conductive end rotate along with movement of the conductive end. The clamping ring arranged at the other end of the rotating arm annularly clamps the surface of the cable, meanwhile, the rotating shaft arranged at the center of the rotating arm can guarantee that the clamping ring clamps the surface of the cable along the horizontal position, the cable can be kept in a coaxial state in the tail pipe, cable shaking caused by unstable fixation is avoided, and the durability of the overall structure of the terminal is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable terminal, especially to an inner cone plug-in terminal of cable. BACKGROUND

[0002] The inner cone plug-in terminal of cable is mainly used for the circuit connection of electric appliances such as electric switch and transformer with power supply cable, and is fixed on the shell of the electric appliance, and the connection mode is that the outer cable passes through the stress cone center hole in the cable terminal, and then reliably contacts the socket electrode connected with the circuit in the electric appliance through the movable contactor to connect the conduction.

[0003] When the existing cable is installed with the inner cone plug-in terminal of cable, after the cable is inserted into the tail pipe, the alignment position of the cable and the conduction end needs to be calibrated by using a level and other tools, and then the circumferential bolts are tightened one by one to drive the clamping piece to shrink and clamp the cable through the bolt thrust force for installation.

[0004] However, when the existing inner cone plug-in terminal of cable is installed, it is often pulled by external force, and it is difficult to maintain the clamping state only by the friction force between the clamping piece and the cable skin, and the "clamping piece sliding - cable offset - fitting gap increasing" chain reaction is easy to occur, which may cause the conduction path to be interrupted, causing the device to trip, and the clamping piece of most terminals directly slides with the inner wall of the tail pipe, but due to the lack of fixed support of the clamping piece, the "one side high and one side low" inclination occurs, which will make the coaxiality deviation of the cable axis and the tail pipe and the conduction column axis larger, and has a greater impact on the tolerance limit of the insulation material. SUMMARY

[0005] The purpose of the present application is to solve the problem in the prior art that the clamping piece lacks a fixed support, which will cause "one side high and one side low" inclination, and this inclination will make the coaxiality deviation of the cable axis and the tail pipe and the conduction column axis larger, and has a greater impact on the tolerance limit of the insulation material, and a kind of inner cone plug-in terminal of cable is proposed.

[0006] In order to solve the problems existing in the prior art, the present application adopts the following technical scheme: An inner cone plug-in terminal of cable, comprising a stress cone shell, the bottom of the stress cone shell is provided with a connecting flange, and the other end of the connecting flange is fixedly connected with a tail pipe, the bottom of the tail pipe is fixedly connected with a sealing and fixing assembly, and the tail pipe is internally provided with a clamping assembly; The clamping assembly comprises: A conduction column is fixed in the tail pipe, and the upper end of the conduction column is fixedly connected in the stress cone shell. Conductive end, the conductive end slides in the outer wall of the conductive column, and the two sides of the conductive end are provided with clamping plates, and the inner wall of the clamping plate is rotatably connected with a rotating arm, one end of the rotating arm is fixedly connected with a clamping ring, and the center position of the rotating arm is provided with a rotating shaft, and the two ends of the rotating shaft are arranged in the groove formed in the inner wall of the tail pipe.

[0007] Preferably, the inner wall of the tail pipe is fixedly connected with a fixed ring near the bottom, and the clamping ring slides on the upper end of the fixed ring.

[0008] Preferably, the outer wall of the conductive column is provided with evenly distributed engagement grooves, and the inner part of the conductive end is provided with an expansion slot near the upper end, and the expansion slot is slidably connected with an engagement block inside the expansion slot, and the engagement block is matched with the engagement groove.

[0009] Preferably, the engagement block is arranged in an annular array about the axial position of the conductive end, and the two ends of the engagement block are provided with two different inclined surfaces, and the size of the inclined surface at the lower end of the engagement block is greater than that of the inclined surface provided at the upper end of the engagement block.

[0010] Preferably, the expansion slot is provided with an elastic member inside, and the two ends of the elastic member are respectively in abutment with the engagement block and the expansion slot.

[0011] Preferably, the sealing and fixing assembly comprises a connecting ring, the connecting ring is fixedly connected with the bottom end of the tail pipe, the outer wall of the connecting ring is provided with a horizontal groove, the horizontal groove is arranged in an annular array about the connecting ring, the horizontal groove is slidably connected with a wedge-shaped extrusion block inside, the wedge-shaped extrusion block is fixedly connected with a sealing ring inside, and the wedge-shaped extrusion block and the sealing ring are both made of rubber material, and the sealing ring moves to the minimum value and is in the shape of a ring.

[0012] Preferably, the outer wall of the connecting ring is provided with a threaded groove, and the outer wall of the connecting ring is rotatably connected with a fastening nut, and the fastening nut is matched with the threaded groove.

[0013] Preferably, a limiting groove is formed in the bottom of the connecting ring, and a limiting block is fixedly connected to the bottom of the wedge-shaped extrusion block, and the limiting block slides in the limiting groove.

[0014] Preferably, the limiting member is provided with a conductive sheet on the upper end.

[0015] Compared with the prior art, the beneficial effects of the present application are: 1、In the cable stretches into the tail pipe inside, the cable is continuously applied pressure, the cable contact end abuts to the conductive end surface, the cable is used to push inwards the pressure and makes the conductive end slide in the outer wall of the conductive column, and the rotating arm of the clamping plate inside the rotating connection at both sides of the conductive end follows the movement of the conductive end and rotates, and the clamping ring set at the other end of the rotating arm can be circularly clamped to the cable skin, while the rotating shaft set at the center position of the rotating arm can ensure that the clamping ring is clamped along the horizontal position, so that the contact end of the cable can be stably attached to the conductive end, and the cable can be kept coaxial in the tail pipe, avoiding the cable shaking caused by unstable fixation, reducing the friction between the cable and the inner wall of the tail pipe, the conductive end and other components, reducing the wear of the components in long-term operation, and improving the durability of the overall structure of the terminal; 2、After the cable is inserted into the tail pipe, the fastening nut is tightened, the nut moves downward along the thread groove of the connecting ring, the inner wall contacts the wedge surface of the wedge extrusion block, the axial tightening force is converted into radial extrusion force, the wedge extrusion block moves to the center along the transverse groove under the action of the extrusion force, and drives the internal rubber sealing ring to shrink synchronously, since the sealing ring is made of rubber material, it can tightly fit the outer wall of the cable with different diameters after shrinking, forming an annular sealing surface, blocking water, dust and other impurities from entering the terminal, avoiding the insulation from being damp, and the wedge extrusion block itself is in close contact with the outer wall of the cable, cooperating with the clamping ring of the clamping assembly, forming double fixation from top to bottom, further enhancing the connection strength of the cable and the terminal, resisting external pulling force. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings: Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the overall cross-sectional structure schematic diagram of the present application; Figure 3 It is the clamping assembly structure schematic diagram of the present application; Figure 4 It is the conductive end cross-sectional structure schematic diagram of the present application; Figure 5 It is the split structure schematic diagram of the sealing and fixing assembly of the present application; Figure 6 It is the cross-sectional structure schematic diagram of the sealing and fixing assembly of the present application.

[0017] In the drawings, the serial number: 1, stress cone shell; 11, connecting flange; 12, tail pipe; 2, sealing and fixing assembly; 21, connecting ring; 22, transverse groove; 23, thread groove; 24, wedge extrusion block; 25, fastening nut; 26, sealing ring; 27, limiting block; 28, limiting groove; 3, clamping assembly; 31, conductive end; 311, telescopic slot; 312, engaging block; 313, elastic piece; 32, conductive column; 33, engaging slot; 34, clamping plate; 35, rotating arm; 36, rotating shaft; 37, clamping ring; 38, fixing ring; 4, limiting piece; 41, conductive sheet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense. For example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; or can be the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0020] Embodiment: The present embodiment provides a cable inner taper plug-in terminal, referring to Figures 1-6 , specifically, including stress cone shell 1, the bottom of stress cone shell 1 is provided with connecting flange 11, and the other end of connecting flange 11 is fixedly connected with tail pipe 12, tail pipe 12 bottom is fixedly connected with sealing fixing assembly 2, and tail pipe 12 inside is provided with clamping assembly 3; Clamping assembly 3 includes; Conductive column 32, conductive column 32 is fixed in tail pipe 12, and the upper end of conductive column 32 is fixedly connected in the inside of stress cone shell 1; Conductive end 31, conductive end 31 slides on the outer wall of conductive column 32, and clamping plate 34 is arranged on both sides of conductive end 31, and rotating arm 35 is rotatably connected to the inner wall of clamping plate 34, the other end of rotating arm 35 is fixedly connected with clamping ring 37, and rotating shaft 36 is arranged at the center position of rotating arm 35, and the both ends of rotating shaft 36 are arranged in the recess groove formed in the inner wall of tail pipe 12; In this optional embodiment, after the cable extends into the tail pipe 12, the contact end of the cable abuts against the surface of the conductive end 31, and the cable is continuously pressed inward to make the conductive end 31 slide on the outer wall of the conductive column 32, and the rotating arm 35 connected to the clamping plate 34 rotates following the movement of the conductive end 31, and the clamping ring 37 arranged at the other end of the rotating arm 35 clamps the surface of the cable in a ring shape, and the rotating shaft 36 arranged at the center of the rotating arm 35 can ensure that the clamping ring 37 clamps in a horizontal position, so that the contact end of the cable can stably abut against the conductive end 31, and the cable can be kept coaxial in the tail pipe 12, avoiding shaking of the cable due to unstable fixation, reducing friction between the cable and the inner wall of the tail pipe 12, the conductive end 31 and other components, reducing wear of the components during long-term operation, and improving the durability of the overall structure of the terminal; Optionally, the fixed ring 38 is fixedly connected to the inner wall of the tail pipe 12 near the bottom, and the clamping ring 37 slides on the upper end of the fixed ring 38; In this optional embodiment, the fixed ring 38 is fixed to the inner wall of the tail pipe 12, and the upper end surface thereof is a flat annular sliding surface, the bottom of the clamping ring 37 closely abuts against and freely slides on the upper end surface of the fixed ring 38, when the rotating arm 35 drives the clamping ring 37 to move towards the center, the fixed ring 38 forces the clamping ring 37 to move only in the annular radial direction through the abutting surface of the clamping ring 37, preventing the clamping ring 37 from tilting and deviating due to uneven force on the rotating arm 35, and this guiding effect forms double positioning with the rotating shaft 36 at the center of the rotating arm 35, further ensuring that the clamping of the clamping ring 37 on the cable is always in a horizontal state, avoiding excessive force on one side of the cable due to tilting of the clamping ring 37, protecting the insulation layer of the cable from being squeezed and damaged, and allowing the contact end of the cable to uniformly abut against the conductive end 31, ensuring stable conduction; Optionally, the outer wall of the conductive column 32 is provided with evenly distributed engagement grooves 33, and the inside of the conductive end 31 is provided with an expansion groove 311 near the upper end, and the expansion groove 311 is slidably connected with an engagement block 312, and the engagement block 312 is matched with the engagement grooves 33; In this optional embodiment, when the cable pushes the conductive end 31 to slide down the conductive column 32, the engagement block 312 in the telescopic groove 311 automatically clamps into the corresponding engagement groove 33 of the conductive column 32. Through the tooth-shaped adaptation of the engagement block 312 and the engagement groove 33, a rigid mechanical lock is formed to limit the upward sliding of the conductive end 31 along the conductive column 32, fix the conductive end 31 at the "clamped-in-place" position, avoid the rebound of the conductive end 31 and the opening of the clamping ring 37 due to slight pulling of the cable, and eliminate the risk of cable loosening. At the same time, the engagement grooves 33 on the outer wall of the conductive column 32 are evenly distributed to form stepped positioning gears. When clamping cables of different diameters, the conductive end 31 slides different distances along the conductive column 32, and the engagement block 312 will automatically clamp into the corresponding gear engagement groove 33 to achieve precise positioning of the conductive end 31. This avoids the error of judging whether the clamping is in place by feeling in the traditional clamping structure, and ensures that the conductive end 31 can stay at the position where the clamping ring 37 just clamps the cable regardless of the diameter of the cable, neither too loose due to insufficient positioning, nor the clamping ring 37 pressing the cable insulation layer due to excessive sliding; Optionally, the engagement blocks 312 are arranged in a ring array about the axial position of the conductive end 31, and two different inclined surfaces are arranged at both ends of the engagement block 312, and the size of the inclined surface at the lower end of the engagement block 312 is larger than that of the inclined surface arranged at the upper end of the engagement block 312; In this optional embodiment, by arranging multiple ring array distributed engagement blocks 312, the locking force can be evenly distributed to multiple engagement points, which not only reduces the load of a single engagement block 312 to avoid metal fatigue, but also ensures that the conductive end 31 is in force balance and always coaxially adheres to the conductive column 32 to stabilize the conductive path. At the same time, the two different inclined surfaces arranged at both ends of the engagement block 312, the large inclined surface at the lower end of the engagement block 312 contacts the edge of the engagement groove 33 and shrinks inward to achieve the effect of multiple gear sliding. If the cable pulls the conductive end 31 to slide upward, the small inclined surface at the upper end of the engagement block 312 contacts the edge of the engagement groove 33, and the inclined surface has a small force area, which requires more pressure to be applied when disassembling to prevent the cable and the terminal from falling off; Optionally, a resilient member 313 is arranged inside the telescopic groove 311, and the resilient member 313 is in abutment with the engagement block 312 and the telescopic groove 311 at both ends; In this optional embodiment, when the conductive end 31 slides along the conductive column 32, the outer wall of the conductive column 32 will extrude the engagement block 312, so that the elastic member 313 is compressed, and the engagement block 312 temporarily retracts into the telescopic groove 311. Once the conductive end 31 slides to the "clamped-in-place" position, the engagement block 312 will align with the engagement groove 33 on the conductive column 32. At this time, the pushing force of the elastic member 313 is no longer blocked by the outer wall of the conductive column 32, and immediately pushes the engagement block 312 out and clamps into the engagement groove 33, automatically completing the locking, integrating the "conductive end 31 sliding - clamping ring 37 clamping - engagement locking" into a coherent automatic action, greatly simplifying the installation steps, especially suitable for narrow space or batch installation scene, reducing the dependence on the skills of the operator; Optionally, the sealing and fixing assembly 2 comprises a connecting ring 21, the connecting ring 21 is fixedly connected with the bottom end of the tail pipe 12, and a horizontal groove 22 is formed in the outer wall of the connecting ring 21, and the horizontal grooves 22 are arranged in a ring shape about the connecting ring 21. A wedge-shaped extrusion block 24 is slidably connected inside the horizontal groove 22, a sealing ring 26 is fixedly connected inside the wedge-shaped extrusion block 24, and the wedge-shaped extrusion block 24 and the sealing ring 26 are both made of rubber material, and the sealing ring 26 moves to the minimum value and forms a ring shape; In this optional embodiment, after the cable is inserted into the tail pipe 12, the extrusion force is transmitted to the connecting ring 21 through the wedge-shaped extrusion block 24. The wedge-shaped extrusion block 24 moves to the center along the horizontal groove 22 under the action of the extrusion force, and drives the internal rubber sealing ring 26 to shrink synchronously. Since the sealing ring 26 is made of rubber material, it can tightly fit the outer wall of the cable of different diameters after shrinking, forming a ring-shaped sealing surface, blocking water, dust and other impurities from entering the terminal interior, preventing the insulation from being damp, and the wedge-shaped extrusion block 24 itself is in close contact with the outer wall of the cable, cooperating with the clamping ring 37 of the clamping assembly 3 to form double fixation from top to bottom, further enhancing the connection strength between the cable and the terminal and resisting external force pulling; Optionally, a threaded groove 23 is formed in the outer wall of the connecting ring 21, and a fastening nut 25 is rotatably connected to the outer wall of the connecting ring 21, and the fastening nut 25 and the threaded groove 23 are matched; In this optional embodiment, the fastening nut 25 is connected with the threaded groove 23 of the connecting ring 21 through threaded engagement. When the nut is rotated, the nut will move at a constant speed in the axial direction along the threaded groove 23. After the inner wall of the nut comes into contact with the wedge surface of the wedge-shaped extrusion block 24, the axial movement is converted into a radial extrusion force. The operator can accurately adjust the size of the extrusion force by controlling the number of rotations of the nut. For large-diameter cables or scenarios that require high-strength sealing, the nut can be rotated several more times to increase the extrusion force and make the sealing ring 26 fit the cable more tightly. For small-diameter cables or cables with fragile insulation layers, the number of rotations can be reduced to avoid excessive extrusion damage to the cable. This on-demand adjustment feature significantly improves the controllability of the sealing pressure compared to the traditional bolt tightening sealing method. At the same time, the fastening nut 25 is in the form of a ring and is engaged with the threaded groove 23 on the outer wall of the connecting ring 21. When the nut is rotated, the axial movement of the nut is synchronized around the entire circumference. The extrusion force of the inner wall of the nut on the wedge-shaped extrusion block 24 is also evenly distributed around the circumference of the connecting ring 21. Since the wedge-shaped extrusion blocks 24 are arranged in a ring array along the connecting ring 21, the uniform extrusion force will drive all the extrusion blocks to move synchronously towards the center, pushing the sealing ring 26 to shrink uniformly around the entire circumference, forming a "360° dead angle-free" sealing surface, ensuring that the sealing ring 26 is always tightly fitted to the cable surface, and eliminating the risk of sealing failure due to uneven pressure application. Optionally, a limiting groove 28 is formed at the bottom of the connecting ring 21, and a limiting block 27 is fixedly connected to the bottom of the wedge-shaped extrusion block 24. The limiting block 27 slides inside the limiting groove 28. In this optional embodiment, the core function of the wedge-shaped extrusion block 24 is to slide radially along the connecting ring 21 to push the sealing ring 26 to shrink. The extrusion block is forced to slide only in the radial direction and cannot rotate in the circumferential direction, ensuring that all extrusion blocks move synchronously towards the center, pushing the sealing ring 26 to shrink uniformly, forming a "360° dead angle-free" sealing surface. At the same time, the close fit of the limiting block 27 and the limiting groove 28 provides "bottom support" for the extrusion block, limiting its inclination angle and avoiding local stress concentration, ensuring the structural integrity of the extrusion block and stable sliding and pressure application even after long-term use. Optionally, a limiting member 4 is arranged at the upper end of the stress cone housing 1, and a conductive sheet 41 is arranged at the upper end of the limiting member 4. In the optional embodiment, the butt joint interface of the high-voltage power equipment has very high requirements for position accuracy. If the terminal and the interface are aligned only by manual visual inspection, not only is it time-consuming and laborious, but also it is easy to cause installation jam due to alignment deviation. The limiting member 4 can be directly matched with the corresponding limiting structure of the external equipment, which is equivalent to providing a guide rail for the butt joint of the terminal and the equipment. When installing, the terminal only needs to be pushed along the guide direction of the limiting member 4, and the alignment can be quickly completed without repeated adjustment. It is especially suitable for installation work in narrow spaces such as cable wells and switch cabinets, and greatly reduces the dependence on the skills of the operator. The conductive sheet 41 is usually made of materials with excellent conductivity such as copper and copper alloy, and is designed as a large-area flat or arc-shaped contact structure. It can form a surface contact with the conductive interface of the external equipment. The increase of the contact area can significantly reduce the contact resistance and reduce the joule heat loss in the current transmission process. Especially in the large current transmission scenario, low contact resistance can avoid metal oxidation at the butt joint due to overheating, prolonging the service life of the terminal.

[0021] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application according to the technical solutions and inventive concepts of the present application, which should be covered within the protection scope of the present application.

Claims

1. A cable-in-cone plug-in termination comprising a stress cone housing (1), characterized in that: The stress cone shell (1) bottom is provided with a connecting flange (11), and the other end of the connecting flange (11) is fixedly connected with a tail pipe (12), the tail pipe (12) bottom is fixedly connected with a sealing fixed component (2), and the tail pipe (12) is internally provided with a clamping component (3); The clamping component (3) comprises; A conductive column (32) is fixed in the tail pipe (12), and the upper end of the conductive column (32) is fixedly connected in the stress cone shell (1); A conductive end (31) is slidably arranged on the outer wall of the conductive column (32), and clamping plates (34) are arranged on the two sides of the conductive end (31); rotating arms (35) are rotatably connected to the inner walls of the clamping plates (34); clamping rings (37) are fixedly connected to the other ends of the rotating arms (35); and rotating shafts (36) are arranged at the central positions of the rotating arms (35), and the two ends of each rotating shaft (36) are arranged in a groove formed in the inner wall of the tail pipe (12).

2. A cable-in-cone plug termination according to claim 1, characterised in that: A fixed ring (38) is fixedly connected to the inner wall of the tail pipe (12) near the bottom, and the clamping ring (37) is slidably arranged on the upper end of the fixed ring (38).

3. A cable-in-cone plug termination as claimed in claim 1, characterised in that: Uniformly distributed engagement grooves (33) are formed in the outer wall of the conductive column (32), and an expansion groove (311) is formed in the inner wall of the conductive end (31) near the upper end; an engagement block (312) is slidably connected in the expansion groove (311); and the engagement block (312) is matched with the engagement grooves (33).

4. A cable-in-cone plug termination according to claim 3, wherein: The engagement block (312) is arranged in an annular array about the axial position of the conductive end (31), and two different inclined surfaces are arranged at the two ends of the engagement block (312), and the size of the inclined surface at the lower end of the engagement block (312) is greater than that of the inclined surface arranged at the upper end of the engagement block (312).

5. A cable-in-cone plug termination as claimed in claim 4, characterised in that: An elastic member (313) is arranged in the expansion groove (311), and the two ends of the elastic member (313) abut against the engagement block (312) and the expansion groove (311) respectively.

6. A cable inner cone plug termination as claimed in claim 1, characterised in that: The sealing fixed component (2) comprises a connecting ring (21) fixedly connected to the bottom end of the tail pipe (12), a horizontal groove (22) formed in the outer wall of the connecting ring (21), and a plurality of annular arrays of the horizontal grooves (22) about the connecting ring (21); a wedge-shaped extrusion block (24) is slidably connected in the horizontal groove (22); a sealing ring (26) is fixedly connected in the wedge-shaped extrusion block (24); the wedge-shaped extrusion block (24) and the sealing ring (26) are made of rubber; and the sealing ring (26) is annular when it is moved to the minimum value.

7. A cable-in-cone plug termination according to claim 6, wherein: A threaded groove (23) is formed in the outer wall of the connecting ring (21), and a fastening nut (25) is rotatably connected to the outer wall of the connecting ring (21), and the fastening nut (25) is matched with the threaded groove (23).

8. A cable-in-cone plug termination according to claim 7, wherein: A limiting groove (28) is formed in the bottom of the connecting ring (21), and a limiting block (27) is fixedly connected to the bottom of the wedge-shaped extrusion block (24), and the limiting block (27) is slidably arranged in the limiting groove (28).

9. A cable inner cone plug termination as claimed in claim 1, characterised in that: The stress cone shell (1) is provided with a limiting part (4) at the upper end, and the limiting part (4) is provided with a conductive sheet (41) at the upper end.

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