Cable butt joint structure

Abstract

The utility model discloses a cable butt joint structure, which comprises a joint body and an inner cone terminal arranged on a cable end, the joint body comprises a silicon rubber insulation sleeve, a silicon rubber shielding sleeve and a metal conductor which are sequentially coated from outside to inside, and a metal partition is arranged in the straight cylindrical metal conductor. Positioning structures located on the metal conductor are arranged at the two ends of the metal conductor, a positioning pin is arranged in the inner cone terminal inserted into the connecting cavity, the inner cone terminal and the connector body are detachably connected in the mode that the positioning pin is embedded into the positioning structures, and workers can detach and replace the connector body when repairing and maintaining the cable. And meanwhile, the metal partition is applied to the joint body, so that insulation damage caused by water entering the cable can be prevented, and the damaged side of the cable can be conveniently detached and replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, especially a cable butt joint structure. BACKGROUND

[0002] In the power and electrified railway system, the butt joint between cables mostly adopts the connecting mode of intermediate joint, the intermediate joint has years of use and operation experience, is widely applied and has relatively low cost. But through the power accident statistics, most cable accidents occur on the cable accessories, especially on the intermediate joint.

[0003] In the prior art, the intermediate joint is generally used for the butt joint of cables with same or similar sections, and the intermediate joint product cannot solve the problem of large cable section span. Moreover, once the intermediate joint product has an accident, the joint needs to be sawed off, leading to that the cable length size is not enough to restore the line, and the most common solution is to add a section of cable and make a set of joint, so as to realize the connection of the line, which increases the cost and greater safety hazards, and the engineering quantity is huge and cannot realize the rapid maintenance and restoration of the line.

[0004] Therefore, it is necessary to develop and design a new cable butt joint structure, which can realize rapid installation and repair work to meet the increasing safety and stability requirements of the power and railway system. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cable butt joint structure, which adopts the embedded detachable structure between the inner cone terminal and the joint body to realize the functions of rapid installation and disassembly, and applies the intermediate partition in the joint body to block the insulation damage caused by water entering the cable, so as to disassemble and replace the damaged cable on one side.

[0006] In order to achieve the above purpose, the technical scheme of the utility model has:

[0007] The joint body comprises a silicon rubber insulation sleeve, a silicon rubber shielding sleeve and a metal conductor which are sequentially covered from outside to inside, the metal conductor is in a straight cylinder shape, a metal partition is arranged in the metal conductor, and a positioning structure on the metal conductor is arranged at both ends of the metal conductor;

[0008] The inner cone terminal is installed on the cable end, the inner cone terminal is used for inserting into the joint body, and a positioning pin is arranged on the inner cone terminal;

[0009] The inner cone terminal of the cable is embedded into the positioning structure by the positioning pin, so that the inner cone terminal and the joint body are assembled and used with the metal conductor to conduct the cable butt joint.

[0010] Compared with the prior art, the cable butt joint structure of the utility model, including the joint body and the inner cone terminal installed on the cable end, the joint body includes the silicon rubber insulation sleeve, the silicon rubber shielding sleeve and the metal conductor which are sequentially covered from outside to inside, the metal conductor is internally provided with a metal partition, a positioning structure is arranged on the metal conductor at both ends of the metal conductor, a positioning pin is arranged in the inner cone terminal inserted into the connecting cavity, the inner cone terminal and the joint body are detachably connected by embedding the positioning pin into the positioning structure, the joint body can be detachably replaced when the worker carries out the cable repair and maintenance, thereby the rapid repair operation can be realized, and the metal partition is applied in the joint body, the insulation damage caused by the water in the cable can be blocked, so that the damaged cable on one side can be detachably replaced.

[0011] Further, the first sealing groove is arranged at both ends of the metal conductor;

[0012] After the inner cone terminal is assembled on the metal conductor, the first sealing ring is formed between the inner cone terminal and the first sealing groove, and the first sealing ring is installed with the first sealing ring.

[0013] Further, the metal conductor is internally provided with the butt joint cavity;

[0014] The butt joint cavity is equally divided and partitioned by the metal partition to form the left butt joint cavity and the right butt joint cavity, and the left butt joint cavity and the right butt joint cavity are used for being installed with the corresponding inner cone terminal.

[0015] Further, the rubber shielding sleeve is externally extended with the ring flange formed at both ends of the rubber shielding sleeve.

[0016] Further, the joint body further comprises:

[0017] The rubber insulation part is closely and circumferentially arranged on the rubber shielding sleeve; and

[0018] The metal shell is closely and circumferentially arranged on the outer periphery of the rubber shielding sleeve.

[0019] Further, the positioning structure comprises:

[0020] The positioning groove is arranged on the joint body;

[0021] A plurality of through grooves are arranged on the joint body, the through grooves are radially perpendicular to the positioning groove, and the through grooves are communicated with the positioning groove.

[0022] Further, the inner cone terminal comprises:

[0023] The cable insulation sleeve;

[0024] A contact ring is arranged above the cable insulation sleeve, and a threaded hole for arranging the positioning pin is arranged on the outer periphery of the contact ring.

[0025] Further, the inner cone terminal further comprises:

[0026] A force ring is arranged on the outer periphery of the upper end of the cable insulation sleeve.

[0027] Further, a second sealing groove is arranged on the inner periphery of the force ring.

[0028] After the force ring is arranged on the cable insulation sleeve, a sealing ring is formed between the force ring and the cable insulation sleeve, and a sealing ring is arranged in the sealing ring.

[0029] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a structure schematic view of indicating the assembly of the joint body and the inner cone terminal in a cable butt joint structure in the embodiment;

[0031] Fig. 2 is a structure schematic view of indicating the joint body in a cable butt joint structure in the embodiment;

[0032] Fig. 3 is a structure schematic view of indicating the inner cone terminal in a cable butt joint structure in the embodiment. DETAILED DESCRIPTION

[0033] In order to better illustrate the utility model, the utility model is further described in detail below with reference to the drawings.

[0034] It should be clear that the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.

[0035] The terms used in the application are only for the purpose of describing the specific embodiments, and are not intended to limit the application. The singular forms "a", "said" and "the" used in the application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0036] The following description refers to the accompanying drawings. Unless otherwise indicated, same or similar elements in different drawings are denoted with the same or similar reference numerals. The implementation described in the following exemplary embodiments does not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first", "second", "third", etc., are used merely as labels, and do not necessarily indicate a particular order or sequence, nor are they intended to indicate or imply relative importance of an object described. The specific meanings of the above terms in the present application can be understood according to the specific circumstances by those of ordinary skill in the art.

[0037] In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described by "and / or", which means that there can be three relationships, for example, A and / or B can represent the three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0038] At present, intermediate joints are generally used for the butt joint of cables with the same or similar cross sections. When the cross section span of the cable is large, the intermediate joint product cannot be used. Moreover, once an accident occurs to the intermediate joint product, the joint needs to be sawn off, which results in insufficient cable length and size and cannot restore the line. The most common solution at present is to add a section of cable and make a set of joints, so as to realize the connection of the line, which increases the cost and a greater safety hazard, and the engineering quantity is huge and cannot realize the rapid maintenance and restoration of the line.

[0039] In addition, in addition to the above understanding, the intermediate joint in the prior art is only a carrier for butt joint of two inner cone terminals, and only has the function of facilitating accurate positioning and splicing of the two inner cone terminals, and does not have a connection function.

[0040] Therefore, the technical problem actually solved by the utility model lies in how to provide a detachable assembly mode and a waterproof mode between an inner cone terminal and a joint body / intermediate joint.

[0041] As shown in FIG. Figs. 1-3 A cable butt joint structure, comprising:

[0042] A joint body 1, the joint body 1 comprises a silicone rubber insulation sleeve 13, a silicone rubber shielding sleeve 12 and a metal conductor 11 which are sequentially covered from outside to inside, the metal conductor 11 in a straight cylinder shape is internally provided with a metal partition 100, and a positioning structure 3 located on the metal conductor 11 is arranged at both ends of the metal conductor 11;

[0043] An inner cone terminal 2 is installed on the cable end, and the inner cone terminal 2 is configured with a positioning pin 23 for insertion into the joint body 1.

[0044] The inner cone terminal 2 is assembled with the joint body 1 by embedding the positioning pin 23 into the positioning structure 3 with the inner cone terminal 2 carrying the cable, so as to connect the cable in a butt joint manner.

[0045] The joint body 1 in the embodiment is composed of a metal conductor 11, a semiconductive silicone rubber shielding coating attached to the outer periphery of the metal conductor 11, and a semiconductive silicone rubber shielding coating.

[0046] The metal conductor 11 is a metal piece with double-passing left and right ends, and the positioning structure 3 is installed at the double-passing port position of the metal conductor 11 to adapt to the setting position of the positioning pin 23 on the inner cone terminal 2.

[0047] The positioning structure 3 is selectively used according to user needs, such as embedded or connected fixed modes, and in the embodiment, the embedded mode is preferred to realize the cable butt joint combination.

[0048] The cable butt joint structure in the embodiment includes a joint body 1 and an inner cone terminal 2 installed on the cable end, the joint body 1 includes a silicone rubber insulation sleeve 13, a silicone rubber shielding sleeve 12, and a metal conductor 11 which are sequentially covered from outside to inside, the metal conductor 11 is a straight cylinder with a metal partition 100 arranged inside, the positioning structure 3 is arranged on the metal conductor 11 at both ends of the metal conductor 11, the positioning pin 23 is arranged in the inner cone terminal 2 inserted into the butt joint cavity, and the inner cone terminal 2 is detachably connected with the joint body 1 by embedding the positioning pin 23 into the positioning structure 3, so that workers can detach and replace the joint body 1 when performing cable repair and maintenance, thereby realizing rapid repair work, and the metal partition 100 applied in the joint body 1 can block the insulation damage caused by water entering the cable, so as to facilitate the detachment and replacement of the damaged cable.

[0049] It should be noted that in the cable butt joint structure, the metal conductor 11 can be used for the structure of two inner cone terminals 2 for communication, the metal partition 100 is arranged in the water inlet conductor, and after the two inner cone terminals 2 are butt jointed with the water inlet conductor, if water enters one end of the inner cone terminal 2, the metal partition 100 prevents water from entering the other end of the inner cone terminal 2.

[0050] In order to further improve the waterproof sealing between the inner cone terminal 2 and the metal conductor 11, as shown in Fig. 2 A first sealing groove 111 is formed at both ends of the metal conductor 11, a first sealing ring is formed between the inner cone terminal 2 and the first sealing groove 111 after the inner cone terminal 2 is assembled on the metal conductor 11, and a first sealing ring is installed in the first sealing ring.

[0051] Specifically, the metal conductor 11 has a docking cavity 10 therein; the docking cavity 10 is equally divided by the metal partition 100 to form a left docking cavity 10 and a right docking cavity 10, which are used to be installed with corresponding inner cone terminals 2.

[0052] In addition, in the embodiment, the rubber shielding sleeve has a ring-shaped flange formed at the outer edge of each end thereof.

[0053] When the inner cone terminal 2 is assembled with the joint body 1, the inner cone terminal 2 is inserted into the docking cavity of the joint body 1 by using the externally provided elastic pushing force, and the inner cone terminal 2 is pushed by the elastic pushing force until the partial inner cone terminal 2 is in contact with the rubber shielding sleeve, so that the ring-shaped flange of the rubber shielding sleeve clamps the partial inner cone terminal 2, thereby providing stability of the connection between the inner cone terminal 2 and the joint body 1.

[0054] In the embodiment, the joint body 1 further comprises a metal shell 14 and a rubber insulation member 15, the metal shell 14 is used for protection, and the metal shell 14 has a threaded structure at both ends thereof, and the metal shell 14 is arranged around the outer periphery of the rubber shielding sleeve.

[0055] In addition, the joint body 1 further comprises a metal flange which is detachably installed at both ends of the metal shell 14, and the metal flange is installed in threaded cooperation with the metal shell 14, and the metal flange is used for positioning the partial inner cone terminal 2.

[0056] In the embodiment, as shown in Figs. 2-3 the positioning structure 3 comprises:

[0057] a positioning groove 31 arranged on the joint body 1; and a plurality of through grooves 32 arranged on the joint body 1, preferably three through grooves 32, the through grooves 32 being radially perpendicular to the positioning groove 31 and in communication with the positioning groove 31.

[0058] The positioning groove 31 and the through grooves 32 are arranged in sequence from left to right on the joint body 1, and in the embodiment, the positioning pin 23 is a spring positioning pin 23, the positioning groove 31 is used to cooperate with the spring positioning pin 23 on the inner cone plug-in terminal, thereby achieving effective positioning of the cable, and specifically, the spring positioning pin 23 can be withdrawn from the through groove 32 by adjusting the angle of installation of the cable, thereby achieving repeated plugging and unplugging of the cable.

[0059] In the embodiment, for the application structure of the inner cone terminal 2, the inner cone terminal 2 comprises:

[0060] a cable insulation sleeve 21; and a contact ring 22 arranged above the cable insulation sleeve 21, and a threaded hole for installing the positioning pin 23 is formed in the outer periphery of the contact ring 22.

[0061] In addition, the inner cone terminal 2 further comprises a force bearing ring 24, which is installed on the outer periphery of the upper end of the cable insulation sleeve 21. According to the foregoing understanding, when the inner cone terminal 2 is assembled with the joint body 1, the inner cone terminal 2 is inserted into the butt joint cavity of the joint body 1 by using the externally provided elastic pushing force. In the process of elastically pushing the inner cone terminal 2, in order to improve the installation stability of the inner cone terminal 2, after the inner cone terminal 2 is pushed in, the force bearing ring 24 is abutted against the silicone rubber insulation piece 15, so as to constrain the movement space of the inner cone terminal 2.

[0062] In addition, a second sealing groove 25 is formed in the inner periphery of the force bearing ring 24. After the force bearing ring 24 is installed on the cable insulation sleeve 21, a sealing ring is formed between the force bearing ring 24 and the cable insulation sleeve 21, which is based on the second sealing groove 25. A sealing ring is arranged in the sealing ring, so as to realize a sealing structure, so as to cut off the diffusion of water entering the cable to the butt joint cavity.

[0063] According to the disclosure and teaching of the above description, the person skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present application, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A cable interface structure, characterized by It comprises: a joint body, which comprises a silicone rubber insulation sleeve, a silicone rubber shielding sleeve and a metal conductor arranged in sequence from outside to inside, the metal conductor is a straight cylinder, a metal partition is arranged inside the metal conductor, and a positioning structure is arranged on both ends of the metal conductor; an inner cone terminal mounted on the cable end, which is used for inserting into the joint body, and a positioning pin is arranged on the inner cone terminal; the inner cone terminal and the joint body are assembled by embedding the positioning pin into the positioning structure through the inner cone terminal of the cable, so that the cable is connected in use.

2. The cable connection structure according to claim 1, wherein: a first sealing groove is arranged on both ends of the metal conductor; after the inner cone terminal is assembled on the metal conductor, a first sealing ring is formed between the inner cone terminal and the first sealing groove, and a first sealing ring is arranged in the first sealing ring.

3. The cable connection structure according to claim 1, wherein: the metal conductor has a connection cavity; the connection cavity is divided into a left connection cavity and a right connection cavity by the metal partition, and the left connection cavity and the right connection cavity are used for mounting corresponding inner cone terminals.

4. The cable connection structure according to claim 1, wherein: the rubber shielding sleeve has a ring-shaped edge extending outward at both ends; 5. The cable termination structure of claim 1, wherein, the cable connection structure further comprises: a rubber insulation member arranged around the rubber shielding sleeve; and 6. The cable mating structure according to claim 5, characterized by a metal shell arranged around the outer periphery of the rubber shielding sleeve. The cable connection structure further comprises:

7. The electrical cable termination structure of claim 1, wherein, a metal flange detachably mounted on both ends of the metal shell, which is used for positioning part of the inner cone terminal. The positioning structure comprises: a positioning groove arranged on the joint body; 8. The cable termination structure of claim 1, wherein a plurality of through grooves arranged on the joint body, which are radially perpendicular to the positioning groove and communicate with the positioning groove. The inner cone terminal comprises: a cable insulation sleeve; 9. The cable mating structure according to claim 8, characterized by, a contact ring arranged above the cable insulation sleeve, and a threaded hole for mounting the positioning pin is arranged on the outer periphery of the contact ring. The inner cone terminal further comprises: a force bearing ring mounted on the outer periphery of the upper end of the cable insulation sleeve.

10. The cable connection structure according to claim 9, wherein: a second sealing groove is arranged on the inner periphery of the force bearing ring; after the force bearing ring is mounted on the cable insulation sleeve, a sealing ring is formed between the force bearing ring and the cable insulation sleeve, and a sealing ring is arranged in the sealing ring.

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