CN114094535B - Pluggable high-voltage cable grounding box - Google Patents

Abstract

The application discloses a pluggable high-voltage cable grounding box, which comprises a box body and a distribution board fixedly arranged in the box body; the box comprises a rear shell with an opening in the front and a box cover covered on the front of the rear shell, the rear shell is in sealing fit with the box cover, two opposite side surfaces of the rear shell are respectively connected with a hinge assembly and a locking assembly, the hinge assembly and the locking assembly are respectively connected with one side corresponding to the box cover, a wire pipe is arranged at the bottom of the rear shell, the box cover and the rear shell form a closed cavity, and the distribution board is arranged in the cavity. The quick connector comprises a socket, a plug and a cable connecting pipe, wherein the cable connecting pipe is connected with a cable, so that the cable can be conveniently connected with and separated from a distribution board, and the working efficiency is improved.

Description

Pluggable high-voltage cable grounding box

Technical Field

The application relates to the technical field of high-voltage cable grounding equipment, in particular to a pluggable high-voltage cable grounding box.

Background

Along with the development of cable laying, the cable sheath grounding system is gradually complicated and huge, so that the installation and overhaul maintenance work specific gravity of the high-voltage cable grounding box is larger and larger, the electric connection of the existing high-voltage cable grounding box is realized through bolts, the disassembly and assembly of the cable are difficult, the working efficiency is low, and meanwhile, the damage to the electric connection part of the cable grounding box is easily caused, so that the sealing cover of the cable grounding terminal box with convenient disassembly and assembly and high safety of the cable is urgently needed to solve the problems.

The patent application with the publication number of CN206575131U discloses a novel high-voltage cable grounding box, which comprises a box body, wherein the box body comprises a shell and a back plate, the shell and the back plate form a containing cavity, and the shell and the back plate are connected through screws, so that the waterproof and moistureproof effects are good. The patent application with publication number of CN208352946U discloses a cylindrical cable grounding box, which comprises a cylindrical box shell and a circular box cover, and when rainwater or temporary ponding is encountered, water flow is easy to guide, and the surface of the box is not easy to ponding. However, none of the solutions disclosed in the above patent applications solve the problem of difficult disassembly and installation of the cable.

Disclosure of Invention

The application aims to solve the technical problem of providing the pluggable high-voltage cable grounding box, which is convenient for the disassembly and the installation of cables and improves the working efficiency.

In order to solve the technical problems, the application adopts the following technical scheme:

a pluggable high-voltage cable grounding box comprises a box body and a distribution board fixedly arranged in the box body; the box comprises a rear shell with an opening in the front and a box cover covered on the front of the rear shell, the rear shell is in sealing fit with the box cover, two opposite side surfaces of the rear shell are respectively connected with a hinge assembly and a locking assembly, the hinge assembly and the locking assembly are respectively connected with one side corresponding to the box cover, a wire pipe is arranged at the bottom of the rear shell, the box cover and the rear shell form a closed cavity, and the distribution board is arranged in the cavity.

Further, the distribution board comprises an insulating bottom plate fixedly connected inside the rear shell, a transverse grounding copper bar is fixedly arranged on the upper portion of the insulating bottom plate, a protection grounding change-over switch and a direct grounding change-over switch are fixedly arranged in the middle of the insulating bottom plate, an L-shaped connector bracket is fixedly arranged at the bottom of the insulating bottom plate, and four quick connectors are fixedly arranged on the connector bracket in a penetrating manner; the utility model discloses a protection earthing change-over switch, including the copper bar, the binding post of protection earthing change-over switch upper end, the binding post of direct earthing change-over switch upper end and ground connection copper bar all are equipped with overvoltage protector between, the binding post of direct earthing change-over switch upper end all is linked together with the ground connection copper bar, the binding post of direct earthing change-over switch upper end all is linked together with one of them quick-operation joint, the binding post of protection earthing change-over switch lower extreme respectively with three other quick-operation joint one-to-one, the binding post of direct earthing change-over switch lower extreme respectively with three other quick-operation joint one-to-one, the spool has four, the quick-operation joint lower part is located corresponding spool respectively.

Further, the quick connector comprises a socket vertically penetrating and fixedly connected with the connector bracket, a cylindrical plug in socket connection with the bottom of the socket and a cable connecting pipe embedded in the plug; the side wall of plug is equipped with the anticreep groove of J font in the position that is close to the socket, the anticreep groove communicates with each other with the plug top surface, the side of socket lower part correspond fixedly be provided with be used for with anticreep groove complex anticreep round pin, the plug overcoat has insulating sheath, be equipped with the fixed pin that is used for fixing the cable connecting pipe in the plug on the plug, insulating sheath and cable connecting pipe all with fixed pin through connection.

Further, the hinge assembly comprises a rotating rod seat vertically arranged on one side of the box cover, a middle block arranged at one end, far away from the box cover, of the rotating rod seat, and a fixing seat arranged at one end, far away from the rotating rod seat, of the middle block; the utility model discloses a box cover, including fixing base, back shell, middle piece, bull stick seat, middle piece, back shell fixed connection, bull stick seat and case lid fixed connection, middle piece one end is articulated with the fixing base, the other end and bull stick seat sliding connection, be equipped with on the bull stick seat and make its gliding bull stick on the middle piece, the slip direction of bull stick seat is perpendicular with the side that the case lid corresponds.

Further, the one end that bull stick seat corresponds with the intermediate block is equipped with the blind hole, the one end that the intermediate block corresponds inserts in this blind hole and with this blind hole sliding fit, the intermediate block be equipped with the spout of perpendicular to case lid in this blind hole matched with position, be equipped with in the spout with this blind hole axis vertically cylindric lock, cylindric lock and intermediate block sliding connection, the bull stick is parallel with the cylindric lock, bull stick and bull stick seat rotate to be connected, cylindric lock and bull stick fixed connection.

Further, the locking component comprises a lock tongue fixedly connected to the side surface of the box cover and a lock hook rotatably connected to the corresponding side surface of the rear shell; the lock comprises a lock bolt, a lock post, a lock hook and an arc hook, wherein the lock post protrudes outwards from one end of the lock bolt, the arc hook is used for hooking the lock post, and the arc hook is eccentrically arranged.

Further, the locking component comprises a fixed block fixedly arranged on the inner side of the rear shell and a movable block fixedly arranged on the inner face of the box cover, a notch is formed in the fixed block, and a protrusion which can penetrate through the notch and clamp the fixed block between the movable block and the box cover is arranged on the movable block.

Further, the sliding directions of the movable block and the fixed block are consistent with that of the rotating rod seat, and after the box cover and the rear shell are locked, the notch and the bulge are staggered.

Further, the hinge assembly is a hinge.

Further, the back of the back shell is provided with a hanging lug, and the case cover is provided with a handle.

The application has the positive effects that:

1. the application is provided with the box body, the distribution board is arranged in the box body, the quick connector is arranged on the distribution board and comprises the socket, the plug and the cable connecting pipe, and the cable connecting pipe is connected with the cable, so that the cable can be conveniently connected with and separated from the distribution board, and the working efficiency is improved.

2. The plug is provided with the anti-falling groove, and the socket is provided with the anti-falling pin, so that the plug and the socket are more reliable in connection and cannot fall off.

3. The box includes backshell and case lid, is equipped with hinge assembly and locking subassembly between backshell and the case lid, and hinge assembly includes bull stick seat, intermediate piece, bull stick, handle and fixing base, and locking subassembly includes movable block and fixed block, and after the case lid was covered, the handle was rotated, drove the case lid and followed preceding lateral shifting of backshell, under the effect of movable block and fixed block, the case lid compresses tightly on the backshell. When the case cover is opened, the case cover can be opened by only reversely rotating the handle to drive the movable block to transversely move and pulling the handle. Therefore, the box cover is more convenient to open and close, the efficiency is higher, and the labor is saved. And when the case cover moves transversely, the case cover can move a small amount towards the rear case under the action of the upper inclined surface of the movable block, so that the case cover is tightly pressed on the rear case, and the sealing is tighter.

Drawings

FIG. 1 is a schematic outline of embodiment 1;

FIG. 2 is a schematic outline of embodiment 2;

FIG. 3 is a schematic view showing the structure of embodiment 2 with the cover removed;

FIG. 4 is a schematic view of the structure of the hinge assembly of embodiment 2;

FIG. 5 is an enlarged view of a portion I of FIG. 1;

FIG. 6 is an enlarged view of a portion II of FIG. 2;

FIG. 7 is an enlarged view of a portion III of FIG. 3;

FIG. 8 is a bottom view of the movable block of FIG. 7;

fig. 9 is a schematic external view of the switchboard;

FIG. 10 is an exploded view of the quick connector;

in the figure, 1, a box cover; 2. a handle; 3. a rear case; 4. hanging lugs; 5. a presence tube; 6. a locking assembly; 7. a rotating rod seat; 8. a middle block; 9. a fixing seat; 10. a handle; 11. a rotating rod; 12. a chute; 13. a flange; 14. sealing grooves; 15. a fixed block; 16. a movable block; 17. a first connection plate; 18. a bolt; 19. a latch hook; 20. a second connecting plate; 21. a cylindrical pin; 22. locking a column; 23. a protrusion; 24. an insulating base plate; 25. a grounding copper bar; 26. an overvoltage protector; 27. a direct ground transfer switch; 28. a joint bracket; 29. a quick connector; 30. a protective grounding change-over switch; 31. a clamp; 32. a socket; 33. anti-drop pins; 34. a first through hole; 35. a cable connection tube; 36. a screw hole; 37. an anti-drop groove; 38. a second through hole; 39. an insulating sheath; 40. a fixing pin; 41. a plug.

Detailed Description

The technical scheme of the present application will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are merely some, but not all, examples of the application. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, based on the embodiments of the application fall within the scope of the application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The following further explains and illustrates the content of the present application with reference to specific embodiments and drawings, it should be noted that the following embodiments are merely preferred embodiments, not all embodiments, and should not be construed as limiting the scope of the present application.

Example 1

As shown in fig. 2, 9 and 10, a pluggable high-voltage cable grounding box is characterized by comprising a box body and a distribution board fixedly arranged in the box body; the box includes preceding open-ended backshell 3 and lid 1 of lid in the front of backshell 3, backshell 3 and lid 1 sealing fit, be connected with hinge assembly and locking subassembly 6 on two opposite sides of backshell 3 respectively, hinge assembly and locking subassembly 6 link to each other with the corresponding one side of lid 1 respectively, backshell 3 bottom is equipped with spool 5 lid 1 and backshell 3 constitute confined cavity, the distribution board sets up in this cavity.

The distribution board comprises an insulating bottom plate 24 fixedly connected inside a rear shell 3 through screws, a transverse grounding copper bar 25 is fixedly arranged on the upper portion of the insulating bottom plate 24, and a protective grounding change-over switch 30 and a direct grounding change-over switch 27 are sequentially and fixedly arranged in the middle of the insulating bottom plate 24 from left to right. The bottom of the insulating bottom plate 24 is fixedly provided with an L-shaped connector bracket 28, and four quick connectors 29 are arranged on the connector bracket 28. The overvoltage protector 26 is arranged between the wiring terminal at the upper end of the protection grounding change-over switch 30 and the grounding copper bar 25, the wiring terminal at the upper end of the direct grounding change-over switch 27 is communicated with the grounding copper bar 25, the grounding copper bar 25 is communicated with the quick connector 29 at the right end, the wiring terminal at the lower end of the protection grounding change-over switch 30 is respectively communicated with three quick connectors 29 at the left side one by one, the wiring terminal at the lower end of the direct grounding change-over switch 27 is respectively communicated with three quick connectors 29 at the left side one by one, the four wire pipes 5 are respectively arranged in the corresponding wire pipes 5 at the lower parts of the quick connectors 29, and semicircular hoops 31 for fixing the lower parts of the quick connectors and the connector brackets 28 are respectively arranged at the lower parts of the quick connectors 29. The direct grounding transfer switch 27 and the protection grounding transfer switch 30 are both of the type RKQL-250/3, and the overvoltage protector is of the type LHQ-110.

The quick connector 29 comprises a socket 32 vertically penetrating and fixedly connected with the connector bracket 28, a cylindrical plug 41 in socket connection with the bottom of the socket 32, and a cylindrical cable connecting pipe 35 embedded in the plug 41. The utility model discloses a cable connector, including plug 41, socket 32, plug 41, cable connecting pipe 35, plug 41, fixing pin 40 that insulating material made, cable and cable connecting pipe 35 pass through the screw fixed connection in screw 36 of cable connecting pipe 35 lower part, the fixed anti-disengaging pin 33 that is used for with anti-disengaging groove 37 complex that is provided with of anti-disengaging groove 37 correspondence to the lateral wall upper portion of plug 41 along circumference equipartition has two J-shaped anti-disengaging grooves 37, the side of socket 32 lower part is fixed, plug 41 overcoat has insulating sheath 39, be equipped with on the plug 41 along radially penetrating in insulating sheath 39 and plug 41's second through-hole 38, cable connecting pipe 35 upper portion is equipped with radial first through-hole 34, be equipped with the fixed pin 40 that insulating material made in the second through-hole 38, cable and cable connecting pipe 35 pass through the screw fixed connection in screw 36 of screwing in cable connecting pipe 35 lower part, fixed pin 40 inserts in second through-hole 38 to inlay cable connecting pipe 35 in plug 41, realize cable and plug 41's electric connection. The clips 31 are respectively clamped on the plugs 41 below the lower end surfaces of the corresponding insulating sheaths 39, and the lower ends of the plugs 41 are positioned in the corresponding wire pipes 5.

After the plug 41 is inserted into the socket 32, the plug 41 is rotated, and the plug 41 is locked to the socket by the anti-disengagement pin 33 and the anti-disengagement groove 37, thereby preventing the plug 41 from being released.

The lower part of the socket 32 is conical with a large upper part and a small lower part, and the lower part of the socket 32 is provided with two symmetrical axial grooves, so that the socket 32 and the plug 41 are elastically connected. The inner wall of the upper portion of the plug 41 is a conical surface corresponding to the bottom of the socket 32, so that the plug 41 is easier to insert into the socket 32.

The box includes preceding open-ended rectangle backshell 3 and lid at the preceding rectangle case lid 1 of backshell 3, be equipped with sealed rubber ring between backshell 3 and the case lid 1, be connected with hinge assembly between backshell 3 left side and the case lid 1, be connected with locking assembly 6 between backshell 3 right side and the case lid 1, case lid 1 and backshell 3 constitute confined cavity. The back of the back shell 3 is provided with hanging lugs 4 at positions close to four corners, two handles 2 are symmetrically arranged in front of the box cover 1, and four wire tubes 5 are arranged at the bottom of the back shell 3.

As shown in fig. 2, 4 and 6, the hinge assembly includes two rotating rod seats 7 vertically provided at the left side of the case cover 1, and the two rotating rod seats 7 are vertically symmetrical. The left end of the rotating rod seat 7 is provided with an L-shaped middle block 8, the rear end of the middle block 8 is provided with a fixed seat 9, and the two fixed seats 9 are vertically symmetrical. The fixed seats 9 are fixedly connected with first lugs correspondingly welded on the left side of the rear shell 3 through screws, and the rotating rod seat 7 is fixedly connected with second lugs correspondingly welded on the front of the box cover 1 through screws. The rear end of the middle block 8 is hinged with the fixed seat 9, the right end of the middle block 8 is slidably connected with the rotary rod seat 7, a vertical rotary rod 11 for enabling the two rotary rod seats 7 to synchronously slide on the middle block 8 is arranged between the two rotary rod seats 7, and the sliding direction of the rotary rod seat 7 is perpendicular to the left side of the box cover 1.

The left end that bull stick seat 7 and intermediate piece 8 correspond all is equipped with the blind hole, and two intermediate piece 8 right-hand member are cylindrical, and the right-hand member of two intermediate pieces 8 all inserts in the blind hole that corresponds and with corresponding blind hole sliding fit. The right parts of the two middle blocks 8 are respectively provided with a plane in a machining mode, the planes are respectively provided with a sliding groove 12 perpendicular to the box cover 1, cylindrical pins 21 parallel to the rotating rods 11 are respectively arranged in the sliding grooves 12, the cylindrical pins 21 are respectively eccentrically arranged on the upper end face and the lower end face of the rotating rods 11, the cylindrical pins 21 are respectively in sliding connection with the corresponding middle blocks 8, two ends of the rotating rods 11 are respectively in through rotation connection with the side walls of the positions where the blind holes are located on the corresponding rotating rod seats 7, and the cylindrical pins 21 are respectively in interference connection with the corresponding rotating rods 11.

The middle part of the rotating rod 11 is hinged with a handle 10.

The handle 10 is rotated to drive the rotating rod 11 to rotate, and the cylindrical pin 21 is eccentrically arranged, so that the cylindrical pin 21 slides in the corresponding sliding groove 12 and simultaneously drives the rotating rod seat 7 to move left and right, and then drives the box cover 1 to move left and right.

As shown in fig. 3 and 7, the locking assembly 6 includes four fixed blocks 15 symmetrically welded on the upper side and the lower side of the inner wall of the rear shell 3, and four movable blocks 16 correspondingly welded in the case cover 1, four semicircular openings are transversely formed in the inner part of the fixed block 15 close to the center of the rear shell, and four semicircular protrusions 23 are correspondingly arranged on the movable blocks 16.

The front side of the rear shell 3 is provided with a rectangular flange 13, a circle of sealing groove 14 is arranged in front of the flange 13, and a sealing ring is arranged in the sealing groove 14.

After the case cover 1 is covered, the protrusion 23 on the movable block 16 backwards passes through the opening on the corresponding fixed block 15, and then the rotary rod 11 is rotated to enable the case cover 1 to move transversely, so as to drive the movable block 16 to move transversely, and enable the fixed block 15 to be clamped between the protrusion 23 on the movable block 16 and the case cover 1, so that the case cover 1 is tightly attached to the flange 13 of the rear case 3, and the sealing between the rear case 3 and the case cover 1 is realized by means of the sealing ring in the sealing groove 14, so that a sealed cavity is formed between the rear case 3 and the case cover 1, and the high-voltage cable is grounded in the cavity.

As shown in fig. 7 and 8, the surface of the protrusion 23 matching with the fixed block 15 is an inclined surface, so that when the movable block 16 moves laterally, the fixed block 15 and the corresponding movable block 16 are easier to match, and the case cover 1 can be driven to move slightly toward the rear case 3, so that the case cover 1 and the rear case 3 are more labor-saving when being tightly attached.

The application process of the application is as follows:

1. the rear housing 3 is secured to a wall or other mounting surface by means of lugs 4.

2. The cable is inserted into the rear housing 3 through the conduit 5 and the ground connection is completed.

3. The case cover 1 is closed, and the protrusions 23 on the movable blocks 16 are enabled to pass through the corresponding openings on the fixed blocks 15.

4. The rotary rod 11 is rotated to enable the case cover 1 to transversely move, the movable block 16 is driven to transversely move, the bulges 23 on the movable block 16 are staggered with the openings on the fixed block 15, the fixed block 15 is clamped between the bulges 23 on the movable block 16 and the case cover 1, the case cover 1 is tightly attached to the flange 13 of the rear case 3, and a closed space is formed between the rear case 3 and the case cover 1.

Example 2

As shown in fig. 1 and 5, the present embodiment is different from embodiment 1 in that:

the hinge assembly is a hinge, and the rear shell 3 and the box cover 1 are welded at the positions corresponding to the hinge respectively.

The locking assembly 6 comprises a first connecting plate 17 fixedly connected with a third lug welded on the right side of the box cover 1 through a screw, a lock tongue 18 welded on the outer side of the first connecting plate 17, a second connecting plate fixedly connected with a fourth lug welded on the right side of the rear shell 3 through a screw, and a lock hook 19 rotatably connected on the outer side of the second connecting plate 20. The right end of the rear part of the lock tongue 18 is provided with a lock column 22 protruding outwards, and the front end of the lock hook 19 is provided with an arc-shaped hook for hooking the lock column 22.

The arc-shaped hook is eccentrically arranged, the hook tip of the arc-shaped hook is downward, and the distance between the inner face of the arc-shaped hook and the rotating shaft of the lock hook 19 is gradually reduced from the hook tip to the hook body. In fig. 5, after the cover 1 is covered, the latch hook 19 is rotated anticlockwise to hook the lock column 22, and then the latch hook 19 is rotated anticlockwise continuously, because the arc hook of the latch hook 19 is arranged eccentrically, the cover 1 moves backwards a little under the drive of the arc hook and is pressed on the rear shell 3, so that the rear shell 3 and the cover 1 are more labor-saving when being tightly attached.

Example 3

This embodiment differs from embodiment 2 in that the hinge of embodiment 2 is removed and replaced with the locking assembly 6 of embodiment 2, so that in this embodiment, the lid 1 can be removed from the rear case 3 after the locking assembly is unlocked.

At present, the technical scheme of the application has been subjected to pilot-scale experiments, namely small-scale experiments of products before large-scale mass production; after the pilot test is completed, the use investigation of the user is performed in a small range, and the investigation result shows that the user satisfaction is higher; now, the preparation of the formal production of the product for industrialization (including intellectual property risk early warning investigation) is started.

The foregoing description of the embodiments of the present application has been presented only to illustrate the technical spirit and features of the present application, and it is intended to enable those skilled in the art to understand the present application and to implement it, but not to limit the scope of the present application only by the present embodiments, i.e. equivalent changes or modifications to the spirit of the present application disclosed herein, and it is intended for those skilled in the art to make local improvements in the system and changes, variations between subsystems, etc. within the scope of the present application without departing from the structure of the present application.

Claims (6)

1. The pluggable high-voltage cable grounding box is characterized by comprising a box body and a distribution board fixedly arranged in the box body; the box body comprises a rear shell (3) with an opening at the front and a box cover (1) covering the front of the rear shell (3), the rear shell (3) and the box cover (1) are in sealing fit, two opposite side surfaces of the rear shell (3) are respectively connected with a hinge assembly and a locking assembly (6), the hinge assembly and the locking assembly (6) are respectively connected with one side corresponding to the box cover (1), a wire pipe (5) is arranged at the bottom of the rear shell (3), the box cover (1) and the rear shell (3) form a closed cavity, and the distribution board is arranged in the cavity; the distribution board comprises an insulating bottom plate (24) fixedly connected inside a rear shell (3), a transverse grounding copper bar (25) is fixedly arranged on the upper portion of the insulating bottom plate (24), a protection grounding change-over switch (30) and a direct grounding change-over switch (27) are fixedly arranged in the middle of the insulating bottom plate (24), an L-shaped connector bracket (28) is fixedly arranged at the bottom of the insulating bottom plate (24), and four quick connectors (29) are fixedly arranged on the connector bracket (28) in a penetrating manner; the overvoltage protection device is characterized in that an overvoltage protector (26) is arranged between a wiring terminal at the upper end of the protection grounding change-over switch (30) and a grounding copper bar (25), the wiring terminal at the upper end of the direct grounding change-over switch (27) is communicated with the grounding copper bar (25), the grounding copper bar (25) is communicated with one of the quick connectors (29), the wiring terminal at the lower end of the protection grounding change-over switch (30) is respectively communicated with the other three quick connectors (29) one by one, the wiring terminal at the lower end of the direct grounding change-over switch (27) is respectively communicated with the other three quick connectors (29) one by one, the wire pipes (5) are four, and the lower parts of the quick connectors (29) are respectively positioned in the corresponding wire pipes (5); the hinge assembly comprises a rotating rod seat (7) vertically arranged on one side of the box cover (1), a middle block (8) arranged at one end, far away from the box cover (1), of the rotating rod seat (7), and a fixed seat (9) arranged at one end, far away from the rotating rod seat (7), of the middle block (8); the fixed seat (9) is fixedly connected with the rear shell (3), the rotating rod seat (7) is fixedly connected with the box cover (1), one end of the middle block (8) is hinged with the fixed seat (9), the other end of the middle block is in sliding connection with the rotating rod seat (7), the rotating rod seat (7) is provided with a rotating rod (11) which enables the rotating rod seat to slide on the middle block (8), and the sliding direction of the rotating rod seat (7) is perpendicular to the side surface corresponding to the box cover (1); the rotary rod seat (7) is provided with a blind hole at one end corresponding to the middle block (8), one end corresponding to the middle block (8) is inserted into the blind hole and is in sliding fit with the blind hole, the middle block (8) is provided with a chute (12) perpendicular to the box cover (1) at the position matched with the blind hole, a cylindrical pin (21) perpendicular to the axis of the blind hole is arranged in the chute (12), the cylindrical pin (21) is in sliding connection with the middle block (8), the rotary rod (11) is parallel to the cylindrical pin (21), the rotary rod (11) is in rotating connection with the rotary rod seat (7), and the cylindrical pin (21) is fixedly connected with the rotary rod (11); the locking assembly (6) comprises a lock tongue (18) fixedly connected to the side surface of the box cover (1) and a lock hook (19) rotatably connected to the corresponding side surface of the rear shell (3); one end of the lock tongue (18) is a lock column (22) protruding outwards, one end of the lock hook (19) is an arc-shaped hook used for hooking the lock column (22), and the arc-shaped hook is eccentrically arranged.

2. The pluggable high-voltage cable grounding box according to claim 1, wherein the quick connector (29) comprises a socket (32) fixedly connected with the connector bracket (28) in a vertical penetrating manner, a cylindrical plug (41) connected with the bottom of the socket (32) in a socket-plug manner, and a cable connecting pipe (35) embedded in the plug (41); the utility model discloses a cable connector, including plug (41), insulating sheath (39), plug (41) and cable connecting pipe, the lateral wall of plug (41) is equipped with anticreep groove (37) of J font in the position that is close to socket (32), anticreep groove (37) communicate with each other with plug (41) top surface, the side of socket (32) lower part corresponds fixedly to be provided with be used for with anticreep groove (37) complex anticreep round pin (33), plug (41) overcoat has insulating sheath (39), be equipped with on plug (41) and be used for fixing cable connecting pipe (35) fixed pin (40) in plug (41), insulating sheath (39) and cable connecting pipe (35) all with fixed pin (40) through connection.

3. The pluggable high-voltage cable grounding box according to claim 1, wherein the locking assembly (6) comprises a fixed block (15) fixedly arranged on the inner side of the rear shell (3) and a movable block (16) fixedly arranged on the inner surface of the box cover (1), a notch is formed in the fixed block (15), and a protrusion (23) capable of penetrating through the notch and clamping the fixed block (15) between the movable block (16) and the box cover (1) is arranged on the movable block (16).

4. A pluggable high voltage cable grounding box according to claim 3, characterized in that the sliding direction of the movable block (16) and the fixed block (15) is consistent with that of the rotating rod seat (7), and the notch and the bulge (23) are mutually staggered after the box cover (1) and the rear shell (3) are locked.

5. The pluggable high voltage cable grounding box of claim 1, wherein the hinge assembly is a hinge.

6. The pluggable high-voltage cable grounding box according to claim 1, wherein the back of the rear shell (3) is provided with hanging lugs (4), and the box cover (1) is provided with a handle (2).