Cable protection grounding box

Abstract

The utility model discloses a cable protection grounding box, particularly relates to the technical field of electric power systems, and comprises a grounding box shell, the front end part of the grounding box shell is connected with a sealing cover, the bottom of the grounding box shell is connected with a plurality of grounding cables, and the bottom of the grounding box shell is connected with a protection pipe in a penetrating manner outside each grounding cable; the two ends of the protection pipe are connected with end covers, an installation frame is installed in the grounding box shell, insertion limiting mechanisms are arranged between the two ends of the installation frame and the two inner walls of the grounding box shell, and the front end of the installation frame is fixedly connected with a copper bar frame. According to the utility model, the copper bar frame is fixedly connected to the arranged mounting frame, and the two end parts of the mounting frame are matched with the limiting frames on the two sides for use, so that the position adjustment is facilitated, the mounting positions of the copper bar frame and the protector in the grounding box shell are further adjusted, and a protection structure is additionally arranged at the wire inlet position of the grounding cable, so that the abrasion is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power system, more specifically, the utility model relates to a cable protection grounding box. BACKGROUND

[0002] In the electric power system, as the key carrier of electric energy transmission, the safe and stable operation of the cable is crucial. With the acceleration of urbanization and the continuous growth of power demand, the application range of the cable is increasingly wide, from urban underground power grid to industrial enterprise power distribution system, to large infrastructure construction projects, the cable plays an indispensable role. However, the cable in the operation process faces many potential safety hazards, among which the grounding protection problem of the cable metal sheath is particularly prominent. The metal sheath of the cable plays an important protective role in the cable structure. It not only can prevent mechanical damage from the outside, but also can resist electromagnetic interference to a certain extent. However, in actual operation, due to the long cable line and the complex environmental conditions, induced voltage will be generated on the metal sheath. When single-phase grounding fault occurs in the cable, fault current will also appear on the metal sheath. If these induced voltages and fault currents are not properly handled, a series of serious consequences will be caused. In order to solve the grounding protection problem of the cable metal sheath, a cable protection grounding box needs to be used.

[0003] Through retrieval, the Chinese patent with publication number CN215601015U discloses a high-voltage cable protection grounding box, which belongs to the technical field of electric power system transmission and relates to a box body, an insulating plate, a first grounding copper bar and a second grounding copper bar. A plurality of sheath protectors are arranged on the first grounding copper bar and the second grounding copper bar at intervals. The first grounding copper bar and the second grounding copper bar are connected through a connecting copper bar, which can safely and reliably make the cable metal sheath realize two-side grounding through the sheath protector at the joint.

[0004] For the above-mentioned cable protection grounding box, although it can effectively perform grounding protection, in actual use, the installation position of the copper bar frame, i.e. the first grounding copper bar and the second grounding copper bar, in the box body is usually fixed by bolts. If the installation position is not ideal, adjustment is needed, and tools are needed to remove the bolts, and then other installation positions need to be adjusted, and holes need to be drilled to leave bolt installation positions, which is time-consuming and laborious, and inconvenient to operate. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a cable protection grounding box.

[0006] To achieve the above object, the utility model provides the following technical scheme: a cable protection grounding box, the front end part of the grounding box shell is connected with the cover, the bottom of the grounding box shell is connected with a plurality of grounding cables, and the bottom of the grounding box shell is located outside each grounding cable and is provided with a protective tube, both ends of the protective tube are connected with end covers, the inside of the grounding box shell is installed with a mounting frame, the both ends of the mounting frame and the two inner walls of the grounding box shell are both provided with plug -in limiting mechanisms, and the front end part of the mounting frame is fixedly connected with a copper bar frame, the outer wall of the copper bar frame is provided with a protector above each protective tube, and each protector is connected with the end of the grounding cable at the corresponding position.

[0007] As a further improvement of the utility model technical scheme, the both ends of the protective tube are provided with first external threads, the inner surface of the end cover is provided with internal threads matched with the first external thread structure, and the inside of the end cover is provided with a through hole for the grounding cable to pass through.

[0008] As a further improvement of the utility model technical scheme, the middle part of the protective tube is provided with second external threads, and the bottom of the grounding box shell is provided with internal thread holes matched with the second external thread structure outside the protective tube.

[0009] As a further improvement of the utility model technical scheme, the both ends of the protective tube are provided with silica gel rings outside the grounding cable, the end of the silica gel ring is provided with an arc part, and the both end inner walls of the protective tube are fixedly provided with fixed blocks on the inside of the two silica gel rings.

[0010] As a further improvement of the utility model technical scheme, the plug -in limiting mechanism includes a limiting frame fixedly connected to the inner side wall of the grounding box shell and a movable block connected to the end of the mounting frame, one end of the movable block is provided with a tooth block inserted into the inner side wall of the limiting frame, the other end of the movable block is fixedly connected with a movable plate in the inside of the mounting frame, the inside of the mounting frame is provided with a movable cavity along the horizontal direction outside the movable plate, a spring is installed between the end of the movable plate and the inner wall of the movable cavity, and the top of the movable plate is fixedly connected with a toggle lever.

[0011] As a further improvement of the utility model technical scheme, the limiting frame is fixedly connected to the inner side wall of the grounding box shell through a screw, and a plurality of limiting teeth grooves for the tooth block insertion are equidistantly arranged on the inner side wall of the limiting frame along the vertical direction.

[0012] As a further improvement of the utility model technical scheme, the top of the toggle lever extends to the top of the mounting frame, and the top of the mounting frame is provided with a sliding groove along the horizontal direction outside the toggle lever.

[0013] The utility model discloses an advantageous effect:

[0014] 1, the utility model discloses a copper row frame fixed connection is set up on the mounting frame, and the both ends of mounting frame and the limit frame of both sides cooperation use keep the plug -in limit mechanism connection, when using, two drive lever pull in the inside, drive movable block and the pawl block move in the inside, spring compression, at this time, operator can adjust the position of mounting frame in the inside of two limit frame according to actual need, after drive lever is loosened, spring reset pushes movable block and moves to the limit frame, and make the pawl block insert the limit rack inside wall's limit tooth groove inside and complete the limit, adjust the position of mounting frame, and then adjust the installation position of copper row frame and protector in the inside of grounding box casing, need not adopt external tool to be quick single person quick adjustment installation position, save time and effort;

[0015] 2, through the wire inlet position of grounding cable increased the protection structure, namely detachable pipe, the two ends inside of pipe correspond the external setting silica gel ring of grounding cable, can reduce the wear and tear between grounding cable and pipe, and when silica gel ring installation, utilize fixed stop and end cap to limit the silica gel ring after installation and keep stable, will not fall off, improved the protection of grounding cable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the internal structure schematic view of the utility model.

[0017] Figure 2 It is the section view of pipe in the utility model.

[0018] Figure 3 It is the external structure schematic view of pipe in the utility model.

[0019] Figure 4 It is the end cap structure schematic view in the utility model.

[0020] Figure 5 It is the structure schematic view of silica gel ring in the utility model.

[0021] Figure 6 It is the section view of limit frame in the utility model.

[0022] Figure 7 It is the connection section view of movable block in the end of mounting frame.

[0023] Figure 8 It is the structure schematic view of grounding box casing after connecting the closure in the utility model.

[0024] The attached figures are labeled as follows: 1. Grounding box housing; 2. Cover; 3. Protective tube; 4. Grounding cable; 5. Mounting bracket; 6. Limiting bracket; 7. Protector; 8. Connecting bracket; 9. Movable block; 10. End cap; 11. Silicone ring; 12. Fixed stop block; 13. Clamping tooth block; 14. Movable plate; 15. Movable cavity; 16. Spring; 17. Actuating rod; 18. Slide groove; 19. Copper busbar; 301. Second external thread; 302. First external thread; 101. Internal thread; 102. Through hole; 111. Arc-shaped part; 601. Limiting tooth groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] As attached Figures 1-8 The cable protection grounding box shown includes a grounding box housing 1. A cover 2 is connected to the front end of the grounding box housing 1. Several grounding cables 4 are connected to the bottom of the grounding box housing 1. A protective tube 3 is installed outside each grounding cable 4 at the bottom of the grounding box housing 1. End caps 10 are connected to both ends of the protective tube 3. An installation frame 5 is installed inside the grounding box housing 1. Insertion limiting mechanisms are provided between the two ends of the installation frame 5 and the two inner walls of the grounding box housing 1. A copper busbar 19 is fixedly connected to the front end of the installation frame 5. A protector 7 is installed on the outer wall of the copper busbar 19 at the position above each protective tube 3. A connecting frame 8 is connected between each protector 7 and the end of the grounding cable 4 at the corresponding position.

[0027] As attached Figures 1-4 As shown, the outer surfaces of both ends of the protective tube 3 are provided with a first external thread 302, and the inner surface of the end cap 10 is provided with an internal thread 101 that matches the structure of the first external thread 302. The end cap 10 is provided with a through hole 102 for the grounding cable 4 to pass through, which facilitates the connection and disassembly of the end cap 10 and the end of the protective tube 3. The end cap 10 does not affect the insertion of the grounding cable 4.

[0028] As attached Figure 1 and attached Figure 3 As shown, the outer surface of the middle part of the protective tube 3 is provided with a second external thread 301, and the bottom of the grounding box housing 1 is provided with an internal thread hole that matches the structure of the second external thread 301, which facilitates the stable connection of the protective tube 3 after it is inserted into the bottom of the grounding box housing 1, and facilitates the insertion of the grounding cable 4, thus providing a limiting and protective effect for the grounding cable 4.

[0029] As shown in the accompanying Figure 2 and the accompanying Figure 5 As shown in the accompanying and the accompanying

[0030] As shown in the accompanying Figure 1 and the accompanying Figures 6-7 As shown in the accompanying and the accompanying

[0031] Working principle: the utility model discloses a cable protection grounding box, and the specific structure is as shown in the accompanying Figures 1-8As shown, in the technical scheme, the copper bar frame 19 is fixedly connected on the installed frame 5, and the two ends of the installed frame 5 are cooperated with the limiting frames 6 on the two sides to keep the plug-in limiting mechanism connected, in use, the two push rods 17 are pulled to the inside, the movable block 9 and the tooth block 13 are driven to move to the inside, and the spring 16 is compressed, at this time, the operator can adjust the position of the installed frame 6 inside the two limiting frames 6 according to actual needs, after the push rod 17 is released, the spring 16 is reset to push the movable block 9 to move to the limiting frame 6, and the tooth block 13 is inserted into the limiting tooth groove 601 on the inner wall of the limiting frame 6 to complete the limiting, the position of the installed frame 5 is adjusted, and then the installation position of the copper bar frame 19 and the protector 7 in the grounding box shell 1 is adjusted, meanwhile, the protective structure, i.e., the detachable protective pipe 3, is further arranged on the incoming wire position of the grounding cable 4, the silica gel ring 11 arranged inside the two ends of the protective pipe 3 and corresponding to the outside of the grounding cable 4 can reduce the abrasion between the grounding cable 4 and the protective pipe 3, and when the silica gel ring 11 is installed, the fixed block 12 and the end cover 10 are used to limit the installed silica gel ring 11 to keep stable and not to fall off, and the protection of the grounding cable 4 is improved.

[0032] In the drawings of the utility model, only the structures related to the embodiments of the utility model are involved, other structures can be referred to the general design, and the same embodiments and different embodiments of the utility model can be combined with each other under the condition of no conflict.

[0033] Finally, the above only describes the preferred embodiments of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. made in the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cable protection grounding box, comprising a grounding box shell (1), a cover (2) is connected to the front end of the grounding box shell (1), characterized in that: The bottom of the grounding box shell (1) is connected with several grounding cables (4), and the bottom of the grounding box shell (1) is externally provided with a protective tube (3) connected with each grounding cable (4), both ends of the protective tube (3) are connected with end covers (10), the inside of the grounding box shell (1) is provided with a mounting rack (5), the two ends of the mounting rack (5) and the two inner walls of the grounding box shell (1) are provided with plug-in limiting mechanisms, and the front end of the mounting rack (5) is fixedly connected with a copper bar rack (19), the outer wall of the copper bar rack (19) is provided with a protector (7) corresponding to the position above each protective tube (3), and each protector (7) and the end of the grounding cable (4) corresponding to the position are connected with a connecting rack (8).

2. A cable protection grounding box according to claim 1, characterized in that: Both ends of the protective tube (3) are provided with first external threads (302), the inner surface of the end cover (10) is provided with internal threads (101) matching the structure of the first external threads (302), and the inside of the end cover (10) is provided with a through hole (102) for the grounding cable (4) to pass through.

3. A cable protection grounding box according to claim 1, characterized in that: The middle part of the outer surface of the protective tube (3) is provided with a second external thread (301), and the bottom of the grounding box shell (1) is provided with an internal thread hole matching the structure of the second external thread (301) corresponding to the outside of the protective tube (3).

4. A cable protection grounding box according to claim 1, characterized in that: The inside of both ends of the protective tube (3) is provided with a silica gel ring (11) outside the grounding cable (4), the end of the silica gel ring (11) is provided with an arc part (111), and the inner wall of both ends of the protective tube (3) is fixedly provided with a fixed stop block (12) corresponding to the inside of the two silica gel rings (11).

5. A cable protection grounding box according to claim 1, characterized in that: The plug-in limiting mechanism comprises a limiting rack (6) fixedly connected to the inner side wall of the grounding box shell (1) and a movable block (9) connected to the end of the mounting rack (5), one end of the movable block (9) is provided with a toothed block (13) inserted into the inner side wall of the limiting rack (6), and the other end of the movable block (9) is fixedly connected with a movable plate (14) inside the mounting rack (5), the inside of the mounting rack (5) is provided with a movable cavity (15) corresponding to the outside of the movable plate (14) in the horizontal direction, a spring (16) is installed between the end of the movable plate (14) and the inner wall of the movable cavity (15), and the top of the movable plate (14) is fixedly connected with a toggle lever (17).

6. A cable protection grounding box according to claim 5, characterized in that: The limiting rack (6) is fixedly connected to the inner side wall of the grounding box shell (1) by screws, and the inner side wall of the limiting rack (6) is equally provided with several limiting teeth grooves (601) for the insertion of the toothed block (13) in the vertical direction.

7. A cable protection grounding box according to claim 5, characterized in that: The top of the toggle lever (17) extends above the mounting rack (5), and the top of the mounting rack (5) is provided with a sliding groove (18) corresponding to the outside of the toggle lever (17) in the horizontal direction.

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