Power cable branch joint structure

Abstract

The utility model discloses a power cable branch joint structure, which belongs to the field of power cables and comprises an inner main cable, an inner branch cable, a crimping sleeve, a connecting sleeve, an elastic conductor plate, a shell, an embedded nut, an extrusion screw, a main cable and a branch cable. According to the utility model, the main cable outside the inner main cable box is crimped and connected through the crimping sleeve to form a conductive path, when in use, the main cable and the branch cable are respectively inserted into the corresponding extrusion screws, the inner ends of the main cable and the branch cable are inserted into the elastic conductor plates on the connecting sleeve, and then the extrusion screws are screwed to form the conductive path. And the extrusion screw moves inwards under the matching action of the extrusion screw and the embedded nut, so that the extrusion screw extrudes the elastic conductor plate to enable the elastic conductor plate to deflect inwards to extrude the main cable or the branch cable, and further fixation and electrical connection of the main cable and the branch cable are realized.

Description

Technical Field

[0001] The utility model relates to the field of power cables, in particular to a power cable branch joint structure. Background Technique

[0002] Existing branch cables are all pre-branched cables, which are cables with prefabricated branch lines produced by factories according to user design drawings when manufacturing the main cable, and are a new technology product in recent years. The pre-branched cable is an alternative product to the busbar trunking power supply in high-rise buildings. It has the advantages of reliable power supply, convenient installation, good waterproof performance, small floor area, low failure rate, low price, and maintenance-free. It is applicable to the 0.6 / 1KV distribution line with alternating current rated voltage. It is widely used for vertical power supply in the electrical shafts of high-rise buildings, residential buildings, commercial buildings, hotels, and hospitals, and is also applicable to power supply systems such as tunnels, airports, bridges, and highways.

[0003] In the prior art, the patent with the patent publication number CN205543289U discloses a branch cable joint, including a main cable and a branch cable. The main cable and the branch cable are connected through a branch joint. The branch joint includes main connecting wires at both ends, a connecting piece, and a branch connecting wire. The main connecting wires at both ends of the branch joint are connected to the main cable through a quick wiring device, and the branch connecting wire is connected to the branch cable through a quick wiring device. The utility model overcomes the deficiencies of the prior art, designs the branch joint of the pre-branched cable into an independent type. The branch joint includes a main connecting wire and a branch connecting wire, and the old cable is quickly modified into a branch cable through the quick wiring devices on the main connecting wire and the branch connecting wire.

[0004] The above technical solution solves the problems in the above background technique. However, its quick wiring device realizes the connection by means of screw extrusion. Since the extrusion area is relatively small, the electrical conductivity after connection is relatively poor. Therefore, a power cable branch joint structure that solves the above problems is needed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems raised in the background technique, and designs a power cable branch joint structure.

[0006] To achieve the above object, the technical solution of the present utility model is a power cable branch joint structure, including an inner main cable, an inner branch cable, a crimping sleeve, a connecting sleeve, an elastic conductor plate, a housing, an embedded nut, an extrusion screw, a main cable, and a branch cable. The inner main cable is crimped and connected to the inner branch cable through the crimping sleeve. Connecting sleeves are respectively connected to the outer ends of the inner branch cable and both ends of the inner main cable. A plurality of annularly distributed elastic conductor plates are installed on the connecting sleeve. The crimping sleeve is sleeved with a housing. An embedded nut is installed on the housing outside the elastic conductor plate. An extrusion screw is screwed and engaged in the embedded nut. The main cable is inserted into the extrusion screws on both sides of the inner main cable. One end of the main cable is located inside the elastic conductor plate. The branch cable is inserted into the extrusion screws outside the inner branch cable.

[0007] Further, the extrusion screw is of a hollow structure, and the inner side of the hollow structure of the extrusion screw is sleeved outside the elastic conductor plate.

[0008] Further, the inner end of the hollow structure of the extrusion screw is a conical surface.

[0009] Further, the housing is a high-temperature resistant insulating plastic structure injection-molded outside the inner main cable, inner branch cable, crimping sleeve, embedded nut, and connecting sleeve.

[0010] Further, the elastic conductor plate is an elastic metal plate-like structure with an inclined outer wall. Beneficial effects

[0011] The present utility model provides a power cable branch joint structure, which has the following beneficial effects. Through its structural design, the inner main cable and the outer main cable are crimped and connected through the crimping sleeve to form a conductive path. When in use, the main cable and the branch cable are respectively inserted into the corresponding extrusion screws, and the inner ends of the main cable and the branch cable are inserted into the elastic conductor plates on the connecting sleeve. Then, the extrusion screw is screwed. Under the combined action of the extrusion screw and the embedded nut, the extrusion screw moves inward, and then the extrusion screw squeezes the elastic conductor plate, causing the elastic conductor plate to deflect inward and squeeze the main cable or the branch cable, thereby realizing the fixation and electrical connection of the main cable and the branch cable. Moreover, since the present device uses a plurality of annularly distributed elastic conductor plates to clamp and fix the main cable or the branch cable, it solves the problem that the existing technology may have poor conductive effect only by using a bolt structure for fixation. Description of the drawings

[0012] Figure 1 is a schematic structural diagram of the power cable branch joint structure of the present utility model;

[0013] Figure 2 is a side view structural diagram of the elastic conductor plate and the connecting sleeve part of the power cable branch joint structure of the present utility model.

[0014] In the figure, 1 is the inner main cable; 2 is the inner branch cable; 3 is the crimping sleeve; 4 is the connecting sleeve; 5 is the elastic conductor plate; 6 is the outer shell; 7 is the embedded nut; 8 is the extrusion screw; 9 is the main cable; 10 is the branch cable. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "set / sleeved with", "socket connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0018] Please refer to Figure 1-2, the present utility model provides a technical solution: a power cable branch joint structure, including an inner main cable 1, an inner branch cable 2, a crimping sleeve 3, a connecting sleeve 4, an elastic conductor plate 5, a housing 6, an embedded nut 7, an extrusion screw 8, a main cable 9, and a branch cable 10. The inner main cable 1 is crimped and connected to the inner branch cable 2 through the crimping sleeve 3. The outer ends of the inner branch cable 2 and both ends of the inner main cable 1 are respectively connected to the connecting sleeve 4. A plurality of annularly distributed elastic conductor plates 5 are installed on the connecting sleeve 4. The crimping sleeve 3 is sleeved with the housing 6. An embedded nut 7 is installed on the housing 6 outside the elastic conductor plate 5. An extrusion screw 8 is screwed into the embedded nut 7 in a meshing manner. The main cable 9 is inserted into the extrusion screws 8 on both sides of the inner main cable 1. One end of the main cable 9 is located inside the elastic conductor plate 5. The branch cable 10 is inserted into the extrusion screws 8 outside the inner branch cable 2.

[0019] In the present utility model, the extrusion screw 8 is of a hollow structure. The inner side of the hollow structure of the extrusion screw 8 is sleeved outside the elastic conductor plate 5. Thus, when the extrusion screw 8 moves inward, it squeezes the elastic conductor plate 5.

[0020] In the present utility model, the inner end of the hollow structure of the extrusion screw 8 is a conical surface. Thus, when the extrusion screw 8 squeezes the elastic conductor plate 5, the elastic conductor plate 5 deflects inward to squeeze the main cable 9 or the branch cable 10.

[0021] In the present utility model, the housing 6 is a high-temperature resistant insulating plastic structure injection-molded outside the inner main cable 1, the inner branch cable 2, the crimping sleeve 3, the embedded nut 7, and the connecting sleeve 4. Thus, the whole device forms an integral structure, and the housing 6 realizes the functions of insulating protection for the internal metal structure and preventing corrosion of the internal structure.

[0022] In the present utility model, the elastic conductor plate 5 is an elastic metal plate-like structure with an inclined outer wall. Thus, it deflects inward in cooperation with the extrusion of the extrusion screw 8.

[0023] In this embodiment:

[0024] During operation, the inner main cable 1 and the outer main cable are crimped and connected through the crimping sleeve 3 to form an electrically conductive path. When in use, the main cable 9 and the branch cable 10 are respectively inserted into the corresponding extrusion screws 8, and the inner ends of the main cable 9 and the branch cable 10 are inserted into the elastic conductor plates 5 on the connecting sleeve 4. Then, the extrusion screw 8 is screwed. Under the combined action of the extrusion screw 8 and the embedded nut 7, the extrusion screw 8 moves inward. Thus, the extrusion screw 8 squeezes the elastic conductor plate 5 to make the elastic conductor plate 5 deflect inward to squeeze the main cable 9 or the branch cable 10. Thus, the fixation and electrical connection of the main cable 9 and the branch cable 10 are realized.

[0025] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power cable branch joint structure, comprising an inner main cable (1), an inner branch cable (2), a crimping sleeve (3), a connecting sleeve (4), an elastic conductor plate (5), an outer shell (6), an embedded nut (7), an extruded screw (8), a trunk cable (9), and a branch cable (10), characterized in that: The inner main cable (1) is crimped and connected to an inner branch cable (2) via a crimping sleeve (3); the outer end of the inner branch cable (2) and the two ends of the inner main cable (1) are respectively connected to connecting sleeves (4); a plurality of elastic conductor plates (5) distributed in a ring shape are mounted on the connecting sleeve (4); the crimping sleeve (3) is covered with an outer shell (6); an embedded nut (7) is mounted on the outer side of the elastic conductor plate (5) on the outer shell (6); an extrusion screw (8) is screwed in the embedded nut (7); a trunk cable (9) is inserted into the extrusion screws (8) on both sides of the inner main cable (1); one end of the trunk cable (9) is located in the elastic conductor plate (5); and a branch cable (10) is inserted into the extrusion screw (8) on the outer side of the inner branch cable (2).

2. The power cable branch joint structure according to claim 1, characterized in that: The extrusion screw (8) is a hollow structure, and the inner side of the hollow structure of the extrusion screw (8) is sleeved outside the elastic conductor plate (5).

3. The power cable branch joint structure according to claim 2, characterized in that: The inner end of the hollow structure of the extrusion screw (8) is a conical surface.

4. The power cable branch joint structure according to claim 1, characterized in that: The outer shell (6) is a high temperature resistant insulating plastic structure which is injection molded onto the inner main cable (1), the inner branch cable (2), the crimping sleeve (3), the embedded nut (7) and the connecting sleeve (4).

5. The power cable branch joint structure according to claim 1, characterized in that: The elastic conductor plate (5) is an elastic metal plate-shaped structure with an inclined outer wall.

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