Special cable joint for branch box

Abstract

The utility model discloses a special cable joint for a branch box, which comprises an insulating shell, the whole insulating shell is T-shaped, the side end face of the insulating shell is provided with a connecting conical surface, the connecting conical surface is arranged in an isosceles trapezoid shape from inside to outside, the depth of the connecting conical surface is 96MM, the depth of the connecting conical surface is increased, and the length of the connecting conical surface is larger than that of the insulating shell. The connecting conical surface is arranged in a plane mode, a positioning installation conical surface is arranged at the position, opposite to the connecting conical surface, of the end face of the side portion of the insulating shell, a cable installation groove is formed in the center of the interior of the insulating shell, and the cable installation groove is communicated with the connecting conical surface. And a grounding bump is fixedly connected to a position, close to the bottom, of the side wall of the insulating shell. In order to adapt to the matching with the branch box sleeve, firstly, the longitudinal matching part of the cable joint and the section of the sleeve is removed so as to realize the matching on the appearance, and secondly, the insulation matching is reinforced on the port plane so as to recover the insulation matching reduced due to the change of the appearance.

Description

Technical Field

[0001] The utility model relates to the technical field of cable joint applications, in particular to a cable joint specially used for a distribution box. Background Technique

[0002] A cable joint is an important component used to connect each section of a cable line, ensuring the continuity and reliability of the entire line. The cable joint can maintain the sealed state inside the cable, preventing moisture and other external factors from invading. Through reasonable manufacturing and installation processes, the insulation performance at the cable joint should reach or even exceed the level of the cable body.

[0003] In a 35kV C-type cable distribution box, in order to provide the insulation performance of the distribution box bushing, the shape of the distribution box bushing has been improved, and the size is not the standard European C-type bushing. Therefore, a standard C-type cable joint cannot be fitted for installation. Thus, the utility model proposes a cable joint specially used for a distribution box. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a cable joint specially used for a distribution box, which solves the problem of the cable joint fitting of a 35kV cable distribution box, and does not affect the fitting between the cable joint and the cable, nor the fitting between the cable joint and the subsequent arrester, etc.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a cable joint specially used for a distribution box, including an insulating shell. The insulating shell is integrally arranged in a T shape. A connecting conical surface is arranged on the side end face of the insulating shell. The connecting conical surface is arranged as a plane. A positioning and installation conical surface is arranged at a position opposite to the connecting conical surface on the side end face of the insulating shell. A cable installation groove is arranged at the center inside the insulating shell. A grounding convex block is fixedly connected to the side wall of the insulating shell near the bottom.

[0006] The utility model is further arranged as: the connecting conical surface is arranged in an isosceles trapezoid shape from inside to outside, and the depth is 96MM.

[0007] Through the above technical solution, the depth of the connecting conical surface is increased, so that it can be closely insulated and fitted with the externally connected distribution box, improving the insulation effect at the connection.

[0008] The utility model is further arranged as: a settlement fitting groove is arranged at the port of the positioning and installation conical surface, and the inner diameter of the settlement fitting groove is larger than the inner diameter of the connection part of the positioning and installation conical surface.

[0009] Through the above technical solution, it is convenient to use external connection and installation components to install and fix the cable insertion part, improving the stability during use.

[0010] The present utility model is further configured such that: the insulating housing is integrally made of epoxy resin material.

[0011] Through the above technical solution, it is convenient to improve the insulation effect of the entire cable joint and facilitate the rapid manufacturing and processing of the insulating housing.

[0012] The present utility model is further configured such that: the top position of the cable installation groove is arranged to converge and contract, and extends to the opposite surface position of the connection conical surface and the positioning installation conical surface.

[0013] Through the above technical solution, when installing the cable joint, it can be inserted in a squeezing manner along with the cable installation groove, and can be stably fixed after bolt connection.

[0014] The present utility model is further configured such that: the outer wall of the insulating housing is near the bottom end face position, and the outer diameter gradually decreases.

[0015] Through the above technical solution, when installing the insulating housing, its bottom can fit with the external connection part, improving the aesthetics after connection.

[0016] The present utility model is further configured such that: a top convex block is fixedly connected to the center of the top of the insulating housing.

[0017] Through the above technical solution, it is used to position the entire insulating housing and can provide a certain degree of stability during installation.

[0018] The beneficial effects of the present utility model are as follows:

[0019] A cable joint dedicated to a branch box proposed by the present utility model is adapted to cooperate with the branch box bushing. First, the part of the longitudinal cooperation between the cable joint and the bushing section is removed to achieve the external shape cooperation. Second, the insulation cooperation is strengthened on the port plane to restore the insulation cooperation reduced due to the change in the external shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional structure diagram of a cable joint dedicated to a branch box of the present utility model;

[0021] Figure 2 is a cross-sectional structure diagram of a cable joint in the prior art.

[0022] In the figure: 100, insulating housing; 101, connection conical surface; 102, positioning installation conical surface; 103, settlement cooperation groove; 104, cable installation groove; 105, grounding convex block; 106, top convex block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0024] As Figure 1 shown, a cable joint dedicated to a branch box includes an insulating housing 100. The insulating housing 100 is made of epoxy resin as a whole, which is convenient for improving the insulation effect of the entire cable joint and facilitating the rapid manufacturing and processing of the insulating housing 100. The insulating housing 100 is integrally T-shaped. A connecting conical surface 101 is provided on the side end face of the insulating housing 100. The connecting conical surface 101 is arranged as an isosceles trapezoid from the inside to the outside, and its depth is 96 MM. Increasing the depth of the connecting conical surface 101 enables it to have a tight insulating fit with the externally connected branch box, improving the insulation effect at the connection. Near the bottom end face position of the outer wall of the insulating housing 100, the outer diameter gradually decreases, which is convenient for the bottom of the insulating housing 100 to fit with the external connection part during installation, improving the aesthetics after connection. The connecting conical surface 101 is a flat surface. A positioning installation conical surface 102 is provided at a position opposite to the connecting conical surface 101 on the side end face of the insulating housing 100. A settlement fitting groove 103 is provided at the port of the positioning installation conical surface 102, and the inner diameter of the settlement fitting groove 103 is larger than the inner diameter of the connection part of the positioning installation conical surface 102, which is convenient for using external connection and installation components to install and fix the cable insertion part, improving the stability during use. A cable installation groove 104 is provided at the center inside the insulating housing 100. The top position of the cable installation groove 104 is arranged in a converging and shrinking manner and extends to the opposite surface of the connecting conical surface 101 and the positioning installation conical surface 102, which is convenient for the cable joint to be inserted in an extrusion manner along with the cable installation groove 104 during installation and can be stably fixed after bolt connection. A grounding lug 105 is fixedly connected to the side wall of the insulating housing 100 near the bottom position. The connection lug 105 can be used to ground the entire cable joint. A top lug 106 is fixedly connected to the center of the top of the insulating housing 100, which is used to position the entire insulating housing 100 and can provide a certain stability during installation.

[0025] When the present utility model is in use, first insert the cable joint into the inside of the insulating housing 100 through the cable installation groove 104, and use installation bolts to fix it at the opposite surface position of the connecting conical surface 101 and the positioning installation conical surface 102. Then insert the assembled insulating cable joint into the external branch box connector through the connecting conical surface 101 for electrical connection, so that the connecting conical surface 101 can be fixedly and highly insulated with the branch box connector.

[0026] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A cable joint dedicated to a branch box, comprising an insulating housing (100), characterized in that: The insulating housing (100) is integrally T-shaped. A connecting conical surface (101) is provided on the side end surface of the insulating housing (100). The connecting conical surface (101) is a flat surface. A positioning and mounting conical surface (102) is provided at a position opposite to the connecting conical surface (101) on the side end surface of the insulating housing (100). A cable installation groove (104) is provided at the center inside the insulating housing (100). A grounding bump (105) is fixedly connected to the side wall of the insulating housing (100) near the bottom position.

2. The special cable joint for a branch box according to claim 1, characterized in that: The connecting conical surface (101) is arranged in an isosceles trapezoid shape from the inside to the outside, and the depth is 96 MM.

3. The cable joint for a branch box according to claim 1, characterized in that: A settlement fitting groove (103) is provided at the port of the positioning and mounting conical surface (102), and the inner diameter of the settlement fitting groove (103) is larger than the inner diameter of the connection part of the positioning and mounting conical surface (102).

4. The cable joint for a branch box according to claim 1, characterized in that: The insulating housing (100) is integrally made of epoxy resin material.

5. A special cable joint for a branch box according to claim 1, characterized in that: The top position of the cable installation groove (104) is arranged in a converging and shrinking manner and extends to the opposite surface position of the connecting conical surface (101) and the positioning and mounting conical surface (102).

6. A special cable joint for a branch box according to claim 1, characterized in that: The outer wall of the insulating housing (100) is near the bottom end surface position, and the outer diameter gradually decreases.

7. A special cable joint for a branch box according to claim 1, characterized in that: A top bump (106) is fixedly connected to the center of the top of the insulating housing (100).

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