A quick connector for high-voltage cables

Abstract

The present invention discloses a quick connector for high-voltage cables, belonging to the technical field of cable connectors. It includes a connecting cylinder. Installation grooves I are provided at both ends of the connecting cylinder. A sleeve is fixedly installed on the inner side wall of the installation groove I. An external thread is provided on the outer side wall of the sleeve. An installation groove II is provided at one end of the sleeve. Elastic clamping pieces are fixedly installed on the inner side wall of the installation groove II. A protective sleeve is fixedly installed on the outer side wall of the connecting cylinder. Fixed sleeves are provided at both ends of the protective sleeve. An internal thread is provided on the inner side wall of the fixed sleeve. An installation groove III is provided on the inner side wall of the connecting cylinder. A conductive block is fixedly installed on the inner side wall of the installation groove III. A convex block is fixedly installed on the outer side wall of the connecting cylinder, which can seal the connection between the cable and the device, thereby preventing the entry of external rainwater into the device and greatly improving the safety of the device.

Description

Technical Field

[0001] The present invention relates to a quick connector, specifically a quick connector for high-voltage cables, and belongs to the technical field of cable connectors. Background Art

[0002] High-voltage cables are a type of power cable, referring to power cables used for transmitting electricity between 1 kV and 1000 kV, and are mostly applied to power transmission and distribution. The components of high-voltage cables from the inside to the outside include: conductors, insulation, inner sheath, filler (armoring), and outer insulation. Of course, armored high-voltage cables are mainly used for underground burial, which can resist high-intensity pressure on the ground and prevent damage from other external forces. High-voltage cable connectors used to be of types such as the wrapping type, casting type, and molding type, which required a large amount of on-site work. And due to the limitations of on-site conditions and manufacturing processes, there will inevitably be air gaps and impurities between the insulating tape layers, so problems are likely to occur. The commonly used types in China are the assembled type and the prefabricated type. Cable connectors are divided into cable terminal connectors and cable intermediate connectors. Regardless of the joint form, cable joint failures generally occur at the cable insulation shield break, because this is the part where electrical stress is concentrated. The reasons for cable joint failures caused by manufacturing reasons include manufacturing defects of the stress cone body, problems with insulating fillers, oil leakage of the sealing ring, etc. The cable grounding system includes parts such as cable grounding boxes, cable grounding protection boxes (with sheath protectors), cable cross-interconnection boxes, and sheath protectors.

[0003] However, the existing connectors for high-voltage cables are rather troublesome to use, unable to achieve the effect of quick connection, thus greatly reducing the working efficiency of users. At the same time, the existing connectors for high-voltage cables have poor waterproofing effect when in use, are prone to causing safety failures, and are inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a quick connector for high-voltage cables to solve the above problems. It can seal the connection between the cable and the device, thereby preventing rainwater from the outside from entering the device, and greatly improving the safety of the device.

[0005] The present invention achieves the above object through the following technical solutions. A quick connector for a high-voltage cable includes a connecting cylinder. Installation grooves I are provided at both ends of the connecting cylinder. A sleeve is fixedly installed on the inner side wall of the installation groove I. An external thread is provided on the outer side wall of the sleeve. An installation groove II is provided at one end of the sleeve. An elastic clip is fixedly installed on the inner side wall of the installation groove II. A protective sleeve is fixedly installed on the outer side wall of the connecting cylinder. Fixed sleeves are provided at both ends of the protective sleeve. An internal thread is provided on the inner side wall of the fixed sleeve. An installation groove III is provided on the inner side wall of the connecting cylinder. A conductive block is fixedly installed on the inner side wall of the installation groove III. A convex block is fixedly installed on the outer side wall of the connecting cylinder. Installation grooves IV are provided on both the convex block and the connecting cylinder.

[0006] Preferably, in order to facilitate the movement of the fixed sleeve on the sleeve, the fixed sleeve is sleeved on the sleeve through the mutual cooperation of the internal thread and the external thread.

[0007] Preferably, in order to facilitate the connection effect between the device and the cable, a hot melt adhesive is fixedly installed on the inner side wall of the installation groove IV. A cavity is provided inside the convex block. A heating wire is fixedly installed on the inner side wall of the cavity.

[0008] Preferably, in order to facilitate the position limitation of the fixed sleeve, a cavity is provided inside the fixed sleeve. A limiting device is provided inside the cavity. The limiting device includes a moving cylinder, a connecting rod, a connecting block, a mounting plate, a spring, a limiting plate, a rotating shaft, a limiting block and a magnet.

[0009] Preferably, in order to facilitate the installation of the moving cylinder, a groove I is provided on the inner side wall of the cavity. The limiting block is fixedly installed on the inner side wall of the groove I. One end of the moving cylinder penetrates into the cavity.

[0010] Preferably, in order to facilitate the position limitation of the moving cylinder inside the cavity, a through hole is provided on the connecting block. The connecting block is sleeved on one end of the moving cylinder through the through hole. A groove II is provided on one side of the connecting block.

[0011] Preferably, in order to facilitate the movement of the limiting plate through the rotating shaft, the rotating shaft is rotatably installed on the inner side wall of the groove II. One end of the limiting plate is fixedly installed on the rotating shaft. A groove III is provided on the second connecting block.

[0012] Preferably, in order to facilitate the connection between the limiting plate and the limiting block, one end of the mounting plate is fixedly installed on the inner side wall of the groove III. A groove IV is provided on one side of the mounting plate. One end of the spring is fixedly installed on the inner side wall of the groove IV.

[0013] Preferably, in order to facilitate the limitation of the position of the moving cylinder by the connecting block, a fifth groove is provided on one side of the limiting plate, the other end of the spring is fixedly installed on the inner side wall of the fifth groove, one end of the connecting rod is inserted into the moving cylinder, a fifth installation groove is provided on the inner side wall of the cavity, and the magnet is fixedly installed on the inner side wall of the fifth installation groove.

[0014] Preferably, in order to greatly increase the service life of the device, a sixth groove is provided on the fixed sleeve, the other end of the connecting rod is fixedly installed on the inner side wall of the sixth groove, and corrosion-resistant coatings are applied to the outer side walls of the fixed sleeve and the protective sleeve.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. Corrosion-resistant coatings are applied to the outer side walls of the fixed sleeve and the protective sleeve. The corrosion-resistant coatings can greatly increase the anti-corrosion effect of the device, extend the service life of the key components of the device, and make the device suitable for outdoor use.

[0017] 2. A conductive block is provided in the device. The user can pass the two cables to be connected through the sleeve and into the connecting cylinder, and press the end of the cable passing through the connecting cylinder against the conductive block. When the user rotates the fixed sleeve to fix the cable, the fixed sleeve can drive the limiting plate to move through the mutual cooperation of the connecting rod and the moving cylinder, and the positioning block can lift the limiting plate. When the user finishes rotating the fixed sleeve, the spring can push one end of the limiting plate into the gap between the limiting blocks, so that the limiting blocks can limit the position of the limiting plate, so that the fixed sleeve can only fasten the elastic clip and cannot release the fastening of the elastic clip, thereby preventing the fixed sleeve from loosening, and greatly improving the fixing effect of the device on the cable.

[0018] 3. After the user finishes connecting the cables, the heating wire can be powered on. After the heating wire is powered on, it can heat and melt the hot melt adhesive. The heated and melted hot melt adhesive can flow onto the cables, thereby sealing the connection between the cables and the device, preventing rainwater from entering the device from the outside, and greatly improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the connection between the elastic clip and the sleeve in the present invention.

[0021] Figure 3 It is a schematic diagram of the connection between the fixed sleeve and the limiting device in the present invention.

[0022] Figure 4Schematic diagram of the internal structure of the fixing sleeve in the present invention.

[0023] Figure 5 Schematic diagram of the internal structure of the moving cylinder in the present invention.

[0024] Figure 6 Schematic diagram of the connection between the limit plate and the limit block in the present invention.

[0025] In the figure: 1, connecting cylinder; 2, sleeve; 3, external thread; 4, elastic clip; 5, protective sleeve; 6, fixing sleeve; 7, internal thread; 8, conductive block; 9, convex block; 10, hot melt adhesive; 11, heating wire; 12, connecting rod; 13, moving cylinder; 14, connecting block; 15, mounting plate; 16, spring; 17, limit plate; 18, rotating shaft; 19, limit block; 20, magnet. Specific embodiments

[0026] 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 making creative efforts belong to the scope of protection of the present invention.

[0027] Please refer to Figures 1-6 As shown, a quick connector for high-voltage cables includes a connecting cylinder 1. Installation grooves 1 are provided at both ends of the connecting cylinder 1. A sleeve 2 is fixedly installed on the inner side wall of the installation groove 1. An external thread 3 is provided on the outer side wall of the sleeve 2. A protective sleeve 5 is fixedly installed on the outer side wall of the connecting cylinder 1. Fixing sleeves 6 are provided at both ends of the protective sleeve 5. An internal thread 7 is provided on the inner side wall of the fixing sleeve 6. A cavity is provided inside the fixing sleeve 6. A limiting device is provided inside the cavity. The limiting device includes a moving cylinder 13, a connecting rod 12, a connecting block 14, a mounting plate 15, a spring 16, a limit plate 17, a rotating shaft 18, a limit block 19 and a magnet 20. An installation groove 3 is provided on the inner side wall of the connecting cylinder 1. A conductive block 8 is fixedly installed on the inner side wall of the installation groove 3. A convex block 9 is fixedly installed on the outer side wall of the connecting cylinder 1. Installation grooves 4 are provided on both the convex block 9 and the connecting cylinder 1. When in use, the user can first check whether each component in the device is perfect. A conductive block 8 is provided in the device. The user can pass the two cables to be connected through the sleeve 2 and into the connecting cylinder 1, and press the end of the cable passing into the connecting cylinder 1 against the conductive block 8.

[0028] As a technical optimization solution of the present invention, as Figure 1 、 Figure 2 and Figure 3As shown in the figure, a quick connector for high-voltage cables includes a connecting cylinder 1. Installation grooves 1 are provided at both ends of the connecting cylinder 1. A sleeve 2 is fixedly installed on the inner side wall of the installation groove 1. A protective sleeve 5 is fixedly installed on the outer side wall of the connecting cylinder 1. Fixed sleeves 6 are provided at both ends of the protective sleeve 5. The fixed sleeve 6 is sleeved on the sleeve 2 through the mutual cooperation of the internal thread 7 and the external thread 3. An installation groove 2 is provided at one end of the sleeve 2. Elastic clips 4 are fixedly installed on the inner side wall of the installation groove 2. After the user passes the cable through the sleeve 2, the user can first rotate the fixed sleeve 6, so that the fixed sleeve 6 can move on the sleeve 2 through the mutual cooperation of the internal thread 7 and the external thread 3. The inner diameter of one end of the fixed sleeve 6 is smaller. Therefore, when the fixed sleeve 6 moves, its smaller inner diameter end can squeeze the elastic clips 4, and then the elastic clips 4 can be closed, so that the elastic clips 4 can clamp and fix the cable. The operation is simple, greatly increasing the connection efficiency of the user to the cable.

[0029] As a technical optimization scheme of the present invention, as Figure 5 shown in the figure, a quick connector for high-voltage cables includes a connecting cylinder 1. Installation grooves 1 are provided at both ends of the connecting cylinder 1. A sleeve 2 is fixedly installed on the inner side wall of the installation groove 1. An external thread 3 is provided on the outer side wall of the sleeve 2. A protective sleeve 5 is fixedly installed on the outer side wall of the connecting cylinder 1. Fixed sleeves 6 are provided at both ends of the protective sleeve 5. An internal thread 7 is provided on the inner side wall of the fixed sleeve 6. Hot melt adhesive 10 is fixedly installed on the inner side wall of the installation groove 4. A cavity is provided inside the convex block 9. A heating wire 11 is fixedly installed on the inner side wall of the cavity. After the user finishes connecting the cable, the heating wire 11 can be powered on to work. After the heating wire 11 is powered on to work, it can heat and melt the hot melt adhesive 10. The melted hot melt adhesive 10 can flow onto the cable, and then seal the connection between the cable and the device, so as to prevent rainwater from entering the device from the outside, greatly improving the safety of the device.

[0030] As a technical optimization scheme of the present invention, as Figure 1 、 Figure 3 and Figure 6As shown in the figure, a quick connector for a high-voltage cable includes a connecting cylinder 1. Installation grooves 1 are provided at both ends of the connecting cylinder 1. A sleeve 2 is fixedly installed on the inner side wall of the installation groove 1. An external thread 3 is provided on the outer side wall of the sleeve 2. A protective sleeve 5 is fixedly installed on the outer side wall of the connecting cylinder 1. Fixed sleeves 6 are provided at both ends of the protective sleeve 5. An internal thread 7 is provided on the inner side wall of the fixed sleeve 6. A cavity is provided inside the fixed sleeve 6. A limiting device is provided inside the cavity. The limiting device includes a moving cylinder 13, a connecting rod 12, a connecting block 14, a mounting plate 15, a spring 16, a limiting plate 17, a rotating shaft 18, a limiting block 19 and a magnet 20. A groove 1 is provided on the inner side wall of the cavity. The limiting block 19 is fixedly installed on the inner side wall of the groove 1. One end of the moving cylinder 13 passes through the cavity. A through hole is provided on the connecting block 14. The connecting block 14 is sleeved on one end of the moving cylinder 13 through the through hole. A groove 2 is provided on one side of the connecting block 14. The rotating shaft 18 is rotatably installed on the inner side wall of the groove 2. One end of the limiting plate 17 is fixedly installed on the rotating shaft 18. A groove 3 is provided on the connecting block 14. One end of the mounting plate 15 is fixedly installed on the inner side wall of the groove 3. A groove 4 is provided on one side of the mounting plate 15. One end of the spring 16 is fixedly installed on the inner side wall of the groove 4. A groove 5 is provided on one side of the limiting plate 17. The other end of the spring 16 is fixedly installed on the inner side wall of the groove 5. One end of the connecting rod 12 passes through the moving cylinder 13. An installation groove 5 is provided on the inner side wall of the cavity. The magnet 20 is fixedly installed on the inner side wall of the installation groove 5. When the user rotates the fixed sleeve 6 to fix the cable, the fixed sleeve 6 can drive the limiting plate 17 to move through the mutual cooperation of the connecting rod 12 and the moving cylinder 13, and the positioning block can push up the limiting plate 17. When the user finishes rotating the fixed sleeve 6, the spring 16 can push one end of the limiting plate 17 into the gap between the limiting blocks 19. Thus, the limiting block 19 can limit the position of the limiting plate 17, so that the fixed sleeve 6 can only fasten the elastic clip 4 and cannot release the fastening of the elastic clip 4. Furthermore, the loosening of the fixed sleeve 6 can be prevented, and the fixing effect of the device on the cable can be greatly improved.

[0031] As a technical optimization scheme of the present invention, as Figure 1 shown, a protective sleeve 5 is fixedly installed on the outer side wall of the connecting cylinder 1. Fixed sleeves 6 are provided at both ends of the protective sleeve 5. A groove 6 is provided on the fixed sleeve 6. The other end of the connecting rod 12 is fixedly installed on the inner side wall of the groove 6. Corrosion-resistant coatings are applied on the outer side walls of the fixed sleeve 6 and the protective sleeve 5. The corrosion-resistant coatings can greatly increase the anti-corrosion effect of the device, extend the service life of the key components of the device, and make the device suitable for outdoor use.

[0032] When the present invention is in use, the user can first check whether all components in the device are perfect. Corrosion-resistant coatings are applied on the outer side walls of the fixing sleeve 6 and the protective sleeve 5. The corrosion-resistant coatings can greatly enhance the anti-corrosion effect of the device, extend the service life of the key components of the device, and enable the device to be suitable for outdoor use. A conductive block 8 is provided in the device. The user can pass the two cables to be connected through the sleeve 2 and into the connecting cylinder 1, and press the end of the cable passing through the connecting cylinder 1 against the conductive block 8. When the user rotates the fixing sleeve 6 to fix the cable, the fixing sleeve 6 can drive the limiting plate 17 to move through the cooperation of the connecting rod 12 and the moving cylinder 13, and the positioning block can lift the limiting plate 17. After the user finishes rotating the fixing sleeve 6, the spring 16 can push one end of the limiting plate 17 into the gap between the limiting blocks 19, so that the limiting blocks 19 can limit the position of the limiting plate 17, so that the fixing sleeve 6 can only fasten the elastic clip 4 and cannot release the fastening of the elastic clip 4, thereby preventing the fixing sleeve 6 from loosening, and thus greatly improving the fixing effect of the device on the cable. After the user finishes connecting the cables, the heating wire 11 can be powered on. After the heating wire 11 is powered on, it can heat and melt the hot melt adhesive 10. The melted hot melt adhesive 10 can flow onto the cable, thereby sealing the connection between the cable and the device, preventing rainwater from entering the device, and greatly improving the safety of the device.

[0033] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick connector for high-voltage cables, characterized in that: It includes a connecting cylinder (1). Installation grooves one are provided at both ends of the connecting cylinder (1). A sleeve (2) is fixedly installed on the inner side wall of the installation groove one. An external thread (3) is provided on the outer side wall of the sleeve (2). An installation groove two is provided at one end of the sleeve (2). An elastic clip (4) is fixedly installed on the inner side wall of the installation groove two. A protective sleeve (5) is fixedly installed on the outer side wall of the connecting cylinder (1). Fixed sleeves (6) are provided at both ends of the protective sleeve (5). An internal thread (7) is provided on the inner side wall of the fixed sleeve (6). An installation groove three is provided on the inner side wall of the connecting cylinder (1). A conductive block (8) is fixedly installed on the inner side wall of the installation groove three. A convex block (9) is fixedly installed on the outer side wall of the connecting cylinder (1). Installation grooves four are provided on both the convex block (9) and the connecting cylinder (1); The fixed sleeve (6) is sleeved on the sleeve (2) through the mutual cooperation of the internal thread (7) and the external thread (3); A hot melt adhesive (10) is fixedly installed on the inner side wall of the installation groove four. A cavity is provided inside the convex block (9). An electric heating wire (11) is fixedly installed on the inner side wall of the cavity; A cavity is provided inside the fixed sleeve (6). A limiting device is provided inside the cavity. The limiting device includes a moving cylinder (13), a connecting rod (12), a connecting block (14), a mounting plate (15), a spring (16), a limiting plate (17), a rotating shaft (18), a limiting block (19) and a magnet (20); A groove one is provided on the inner side wall of the cavity. The limiting block (19) is fixedly installed on the inner side wall of the groove one. One end of the moving cylinder (13) penetrates into the cavity; A through hole is provided on the connecting block (14). The connecting block (14) is sleeved on one end of the moving cylinder (13) through the through hole. A groove two is provided on one side of the connecting block (14); The rotating shaft (18) is rotatably installed on the inner side wall of the groove two. One end of the limiting plate (17) is fixedly installed on the rotating shaft (18). A groove three is provided on the connecting block (14) two; One end of the mounting plate (15) is fixedly installed on the inner side wall of the groove three. A groove four is provided on one side of the mounting plate (15). One end of the spring (16) is fixedly installed on the inner side wall of the groove four; A groove five is provided on one side of the limiting plate (17). The other end of the spring (16) is fixedly installed on the inner side wall of the groove five. One end of the connecting rod (12) penetrates into the moving cylinder (13). An installation groove five is provided on the inner side wall of the cavity. The magnet (20) is fixedly installed on the inner side wall of the installation groove five; A groove six is provided on the fixed sleeve (6). The other end of the connecting rod (12) is fixedly installed on the inner side wall of the groove six. Corrosion-resistant coatings are applied on the outer side walls of both the fixed sleeve (6) and the protective sleeve (5).

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