Cross-linked cable hot melting joint

Abstract

The utility model belongs to the technical field of power cables, and provides a crosslinked cable hot melting joint, which comprises a plurality of joint mechanisms arranged between two cable cores, each joint mechanism comprises a connecting pipe, the two cable cores are fixedly connected in the connecting pipe, a sleeve is arranged on the outer side of the connecting pipe, and an insulating layer is arranged between the sleeve and the connecting pipe. Every two adjacent sleeves are kept in a separated state through a limiting piece; the shell is arranged between the two cables in a sleeved mode, the connector mechanisms are arranged in the shell, and sealing pieces are arranged between the two ends of the shell and the two cables respectively. According to the utility model, the connecting end of the cable can be effectively protected, the safety coefficient is improved, the hot melting connection steps are reduced, and the hot melting connection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power cables, in particular to a cross-linked cable hot-melt joint. Background Art

[0002] Cable refers to materials used for power, communication and related transmission purposes. Since power cables are mostly directly buried in the operating environment, cables or connectors may be damaged due to various reasons such as later construction, cable failure, external force damage, etc., and the cables at the damaged points need to be reconnected through cable connectors.

[0003] At present, cable joints include cold shrink, heat shrink, prefabricated, glue-filled and hot melt types. Among them, hot melt joints have the best connection effect. However, after multiple strands of cables are connected by hot melt joints, the strands of cables are loosely arranged, the joints lack necessary limits, and they can swing freely with each other, so that the connection ends of the hot melt joints have no effective protection measures. At the same time, if the gap between the two cable cores is too small, air gap discharge is prone to occur. At the same time, after the existing cable hot melt joints connect the two cable cores, they also need to polish the connection points and then wrap them with insulating layers and other protective layers, which is labor-intensive and has a low connection efficiency. Utility Model Content

[0004] The utility model aims to provide a cross-linked cable hot-melt joint to solve the above problems, to effectively protect the connecting end of the cable, to improve the safety factor, to reduce the hot-melt connection steps, and to improve the efficiency of the hot-melt connection.

[0005] To achieve the above object, the utility model provides the following solution: a cross-linked cable hot-melt joint, comprising:

[0006] A plurality of joint mechanisms, wherein the plurality of joint mechanisms are arranged between two cable cores, the joint mechanism comprises a connecting tube, the two cable cores are fixedly connected in the connecting tube, a sleeve is arranged on the outside of the connecting tube, an insulating layer is arranged between the sleeve and the connecting tube, and two adjacent sleeves are maintained in a separated state by a limiting member;

[0007] The shell is sleeved between the two cables, a plurality of the connector mechanisms are arranged in the shell, and sealing members are arranged between the two ends of the shell and the two cables respectively.

[0008] Preferably, the limiting member includes a connecting plate and a plurality of slots equidistantly arranged on the circumferential side wall of the sleeve, wherein the plurality of slots are arranged parallel to the axis of the sleeve, and the two ends of the slots respectively pass through the two ends of the sleeve, and the two ends of the connecting plate are respectively provided with snap-in blocks, and the snap-in blocks are adapted to the slots.

[0009] Preferably, an armor layer is further provided between the insulating layer and the bushing.

[0010] Preferably, a plurality of clamping strips are fixedly connected to the inner wall of the shell at equal intervals, the plurality of clamping strips are arranged parallel to the axis of the shell, and the clamping strips are matched with the clamping slots.

[0011] Preferably, the sealing member comprises a sealing sleeve, a small opening end of the sealing sleeve is sleeved on the cable, and a large opening end of the sealing sleeve is sleeved on the outer wall of the housing.

[0012] Preferably, both ends of the sealing sleeve are respectively fixedly connected to rubber rings, the wall thickness of the rubber ring is greater than the wall thickness of the sealing sleeve, and the two ends of the sealing sleeve are respectively sleeved on the cable and the housing through the two rubber rings.

[0013] Compared with the prior art, the utility model has the following advantages and technical effects: the main function of the connecting tube is to connect the two cable cores inside it, thereby eliminating the step of grinding the hot melt joint; the main function of the limiter is to achieve the relative fixation of the position between the two adjacent sleeves, and by connecting the adjacent sleeves, the positions of all sleeves are fixed, avoiding the shaking of the hot melt joint in the sleeve; the main function of the outer shell is to protect all joint mechanisms, and cooperate with the seal to isolate the joint mechanism from the external environment. On the whole, the utility model can effectively protect the connection ends of all cable cores in the cable, avoid air gap discharge and damage to the connection ends due to moisture, insect pests, etc. At the same time, by connecting the cable cores in the connecting tube, the steps of grinding and winding the protective layer can be reduced, which can effectively improve the efficiency of the hot melt connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the cable hot-melt joint of the utility model;

[0016] Figure 2 It is a schematic diagram of the joint mechanism of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the joint mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the card strip of the utility model;

[0019] Figure 5 It is a schematic diagram of the connection plate of the utility model;

[0020] Figure 6 It is a cross-sectional view of the sealing sleeve of the utility model;

[0021] Among them, 1. outer shell; 2. cable; 3. sealing sleeve; 4. cable core; 5. joint mechanism; 6. connecting plate; 7. clamping strip; 8. clamping block; 9. clamping slot; 10. sleeve; 11. armor layer; 12. insulation layer; 13. connecting pipe; 14. rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 6 The utility model provides a cross-linked cable hot-melt joint, comprising:

[0025] A plurality of joint mechanisms 5, wherein the plurality of joint mechanisms 5 are arranged between two cable cores 4, the joint mechanism 5 comprises a connecting tube 13, the two cable cores 4 are fixedly connected in the connecting tube 13, a sleeve 10 is arranged outside the connecting tube 13, an insulating layer 12 is arranged between the sleeve 10 and the connecting tube 13, and two adjacent sleeves 10 are maintained in a separated state by a limiting member;

[0026] The housing 1 is sleeved between two cables 2, a plurality of connector mechanisms 5 are arranged in the housing 1, and sealing members are arranged between the two ends of the housing 1 and the two cables 2 respectively.

[0027] The main function of the connecting tube 13 is to connect the two cable cores 4 inside it, thereby eliminating the step of grinding the hot melt joint, and the connecting tube 13 can maintain the conductive performance between the two cable cores 4; the main function of the sleeve 10 is to connect the limiter; the main function of the limiter is to achieve the relative fixation of the position between two adjacent sleeves 10, and by connecting the adjacent sleeves 10, the position of all sleeves 10 is fixed, avoiding the shaking of the hot melt joint in the sleeve 10; the main function of the outer shell 1 is to protect all joint mechanisms 5, and cooperate with the seal to isolate the joint mechanism 5 from the external environment, playing a protective role. On the whole, the utility model can effectively protect the connection ends of all cable cores in the cable, avoid air gap discharge and damage to the connection ends due to moisture, insect pests, etc. At the same time, by connecting the cable core in the connecting tube, the steps of grinding and winding the protective layer can be reduced, which can effectively improve the efficiency of the hot melt connection.

[0028] To further optimize the solution, the connecting pipe 13 can be made of non-metallic pipes such as composite pipes and ceramic pipes.

[0029] A further optimized solution is that the limiter includes a connecting plate 6 and a plurality of slots 9 which are evenly spaced on the circumferential side wall of the sleeve 10. The plurality of slots 9 are arranged parallel to the axis of the sleeve 10, and the two ends of the slots 9 respectively pass through the two ends of the sleeve 10. The two ends of the connecting plate 6 are respectively provided with snap-in blocks 8, which are adapted to the slots 9.

[0030] like Figure 2 , Figure 3 and Figure 5 As shown, a T-shaped connection structure is formed between the connecting plate 6 and the clamping block 8, and the clamping slot 9 is set to a T-shaped slot structure, so that the connecting plate 6 can be inserted into the clamping slot 9 from one end of the clamping slot 9 to achieve the connection between the connecting plate 6 and the sleeve 10.

[0031] Figure 2 The four groups of casings 10 are connected in pairs through connecting plates 6 to form a rectangular structure, which avoids the problems of loose cable core arrangement and shaking of the joints at the hot-melt joints. At the same time, it can also avoid the gap between the two casings 10 being too small to cause air gap discharge, thereby improving the power supply safety factor.

[0032] like Figure 3 As shown, the angle between two adjacent slots 9 is set to 15 degrees. A smaller angle allows the two sleeves 10 and the cable 2 to be in a variety of relative positions, which can meet the connection needs of cables with three-strand, four-strand and other cable cores, making it more convenient to use.

[0033] According to a further optimized solution, an armor layer 11 is further provided between the insulating layer 12 and the bushing 10 .

[0034] like Figure 3As shown, the armor layer 11 is a steel belt, and the stability of the connection can be further improved by providing the armor layer 11.

[0035] According to a further optimization scheme, a plurality of clamping strips 7 are fixedly connected to the inner wall of the housing 1 at equal intervals, the plurality of clamping strips 7 are arranged parallel to the axis of the housing 1 , and the clamping strips 7 are matched with the clamping slots 9 .

[0036] like Figure 2-Figure 4 As described above, the clamping strip 7 and the clamping slot 9 are set to be transitionally matched, so that the sleeve 10 has resistance when sliding on the clamping strip 7. When the construction personnel carry the connector of the utility model, they can fix the required connector mechanism 5 in the housing 1 through the clamping strip 7, so as to achieve the effect of convenient carrying. At the same time, the clamping strip 7 provides more positions for fixing the sleeve 10. During the construction process of restoring the cable connection, a certain sleeve 10 can be selectively fixed through the clamping strip 7, which provides more options for flexible construction.

[0037] According to a further optimized solution, the sealing member comprises a sealing sleeve 3 , a small opening end of the sealing sleeve 3 is sleeved on the cable 2 , and a large opening end of the sealing sleeve 3 is sleeved on the outer wall of the housing 1 .

[0038] According to a further optimization scheme, both ends of the sealing sleeve 3 are respectively fixedly connected to rubber rings 14 , the wall thickness of the rubber rings 14 is greater than the wall thickness of the sealing sleeve 3 , and both ends of the sealing sleeve 3 are respectively sleeved on the cable 2 and the housing 1 through the two rubber rings 14 .

[0039] like Figure 1 , Figure 2 As shown, the sealing sleeve 3 fixes the housing 1 between the two cables 2. When the connection point needs to be inspected later, the sealing sleeve 3 can be removed from the housing 1, and then the housing 1 is moved away along the cable 2 to expose the connector mechanism 5 therein.

[0040] like Figure 6 As shown, by providing a thicker rubber sleeve 14, the rubber sleeve 14 can be more closely attached to the surface of the cable 2 or the housing 1 through its own elasticity, thereby improving the sealing performance. At the same time, the rubber sleeve 14 has a high strength, and when the construction personnel put it on the cable 2 or the housing 1 or remove it from the cable 2 or the housing 1 for subsequent maintenance, the rubber sleeve 14 is not prone to breakage.

[0041] The working process of this embodiment is as follows: before connection, the construction personnel first put the outer shell 1 onto one end of the cable 2, and put the sealing sleeves 3 on the two cables to be connected respectively. After that, the ends of the two cable cores 4 to be connected are hot-melted, and the hot-melt ends are inserted into the connecting tube 13 at the same time, so that the hot-melt ends of the two cable cores 4 are squeezed and contacted with the inner wall of the connecting tube 13 to achieve the connection effect. After the connection of several cable cores 4 is completed, several sleeves 10 are connected through several connecting plates 6, so that the several cable cores are arranged neatly and there is no contact between the cable cores. Finally, the outer shell 1 is moved along the cable 2 to cover the joint mechanism 5, and the two sealing sleeves 3 are respectively put on the two ends of the outer shell 1 to form a sealing protection.

[0042] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply 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 understood as a limitation on the present invention.

[0043] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A cross-linked cable hot-melt joint, characterized in that: include: A plurality of joint mechanisms (5), wherein the plurality of joint mechanisms (5) are arranged between two cable cores (4), the joint mechanism (5) comprises a connecting tube (13), the two cable cores (4) are fixedly connected in the connecting tube (13), a sleeve (10) is arranged on the outside of the connecting tube (13), an insulating layer (12) is arranged between the sleeve (10) and the connecting tube (13), and two adjacent sleeves (10) are maintained in a separated state by a limiting member; A shell (1) is sleeved between two cables (2), a plurality of connector mechanisms (5) are arranged in the shell (1), and sealing members are respectively arranged between the two ends of the shell (1) and the two cables (2).

2. A cross-linked cable hot-melt joint according to claim 1, characterized in that: The limiting member comprises a connecting plate (6) and a plurality of slots (9) which are arranged at equal intervals on the circumferential side wall of the sleeve (10); the plurality of slots (9) are arranged parallel to the axis of the sleeve (10), and the two ends of the slots (9) respectively penetrate the two ends of the sleeve (10); the two ends of the connecting plate (6) are respectively provided with a snap-in block (8), and the snap-in block (8) is adapted to the slots (9).

3. A cross-linked cable hot-melt joint according to claim 1, characterized in that: An armor layer (11) is also provided between the insulating layer (12) and the sleeve (10).

4. A cross-linked cable hot-melt joint according to claim 2, characterized in that: A plurality of clamping strips (7) are fixedly connected to the inner wall of the shell (1) at equal intervals, the plurality of clamping strips (7) are arranged parallel to the axis of the shell (1), and the clamping strips (7) are matched with the clamping slots (9).

5. The cross-linked cable hot-melt joint according to claim 1, characterized in that: The sealing element comprises a sealing sleeve (3), the small opening end of the sealing sleeve (3) is sleeved on the cable (2), and the large opening end of the sealing sleeve (3) is sleeved on the outer wall of the housing (1).

6. A cross-linked cable hot-melt joint according to claim 5, characterized in that: The two ends of the sealing sleeve (3) are respectively fixedly connected to rubber rings (14); the wall thickness of the rubber ring (14) is greater than the wall thickness of the sealing sleeve (3); and the two ends of the sealing sleeve (3) are respectively sleeved on the cable (2) and the housing (1) through the two rubber rings (14).

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