CN110492426A - A kind of high protective cable distribution box - Google Patents

Abstract

The invention discloses a high-protection cable distribution box, which connects at least two sections of high-voltage cables; it also includes: a box body, a cover plate, a cable accessory, and a double-pass bushing seat for connecting two sections of high-voltage cables; one side of the box body Opening; the cover plate is fastened to the opening side of the box; one end of the cable accessory is connected to one end of the high-voltage cable, and the other end is connected to the double-ended bushing; the two ends of the box are provided with wire connections for the other end of the high-voltage cable to pass through There are three double-way bushing seats arranged side by side inside the box body; there are two interfaces on the double-way bushing seat, and one to three cable accessories are connected to one interface of the double-way bushing seat. The sealing and protection effect of the cable distribution box in the present invention is good, and it is convenient to realize branch extension of lines.

Description

A high protection cable distribution box

technical field

The invention relates to the technical field of special cable equipment, and more specifically relates to a high-protection cable distribution box.

Background technique

With the increase of power supply load, power cables have been widely used. In the long-distance laying process, multiple cables need to be connected to achieve the required length. In the actual laying process, the length of the larger-diameter high-voltage cable is often restricted by factors such as transportation, difficulty of installation and laying, and the size of the cable reel. , resulting in the larger the diameter of the power cable, the more the number of connections will be used.

At present, the connection method of multiple cables is generally directly connected by intermediate connection joints. Due to factors such as construction technology, quality of construction personnel, and construction environment, the construction quality of the intermediate joints of power cables is affected, and breakdown and short circuit accidents are prone to occur, causing fires. Due to the small space for cable laying and the small distance between cables, when a cable in a cable shaft or tunnel has a breakdown or short circuit accident, it will often affect all the cables in the entire cable shaft or tunnel, seriously affecting the power supply. The safe operation of the system has also brought large economic losses to power users.

In the face of the above problems, power supply units or construction units often use high-voltage cable intermediate joint boxes to protect the cable intermediate joints in all directions, and seal the high-voltage cable intermediate joints in the explosion-proof box shell. Once the cable intermediate joints break down and explode. Under the protection of the cable explosion-proof box, other surrounding electrical facilities can be effectively protected to prevent secondary damage. To protect the cable intermediate joint after construction, the cable intermediate joint explosion-proof box is usually used for later protection. At present, there are two commonly used cable explosion-proof boxes, straight-line cable explosion-proof box and flexible cable explosion-proof box, which are made of metal or glass steel. The appearance of the product is long and columnar, without flexibility. Because the cable is coiled or laid in the cable trench or cable well, the construction and laying of the cable intermediate joint will generally cause the cable to twist and deform. The box cannot adapt to the twisting and deformation of the cable intermediate joint, and cannot effectively fasten the cable intermediate joint in the housing, resulting in the failure or difficulty of installing the cable explosion-proof box. The cable flexible explosion-proof box utilizes the connection method of convex ribs and grooves in the structure, which better realizes the technical requirements of synchronous bending of the explosion-proof box and the cable, reduces the difficulty of construction, and facilitates on-site construction. Although the flexible cable explosion-proof box can effectively protect the middle joint of the cable, if it encounters power transformation or adding lines, it cannot conveniently separate the branch circuit from the cable connection, which is not conducive to the later engineering transformation and branch line. Additional.

Therefore, it is an urgent problem for those skilled in the art to develop a high-protection cable distribution box with good sealing and protection effect and which can realize the addition of line branches.

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.

In order to achieve the above object, the present invention adopts the following technical solutions:

A high-protection cable distribution box, which connects at least two sections of high-voltage cables; it also includes: a box body, a cover plate, cable accessories, and a double-pass bushing seat for connecting the two sections of the high-voltage cables;

an opening on the upper side of the box;

The cover plate is engaged with the opening side of the box body;

One end of the cable accessory is connected to one end of the high-voltage cable, and the other end is connected to the double-ended bushing;

The two ends of the box body are provided with wire connection barrels for the other end of the high-voltage cable to pass through;

There are three double-way bushing seats arranged side by side inside the box; two interfaces are provided on the double-way bushing seat, and one to three ports are connected to one interface of the double-way bushing seat. cable accessories described above.

The beneficial effect of adopting the above technical solution is that the middle and high voltage cables of the present invention are connected through the double-pipe bushing socket, the interface of the double-pass bushing socket can be connected with 1-3 cable accessories at the same time, and the branch of the high-voltage cable can be increased through the double-pass bushing socket , to realize the transformation of high-voltage cable lines.

Preferably, the bottom surface inside the box is provided with a mounting plate, the double-pass bushing seat is U-shaped, and a metal bead is provided above the middle of the three double-pass bushing seats, and the metal bead is passed through the fixing bolt It is connected with the installation plate and fixed to the double-way bushing seat. The double-way bushing seat is connected with the mounting plate, and the double-way bushing seat on the mounting plate can be taken out together after the mounting plate is taken out from the box, so as to facilitate the inspection and maintenance of the double-way bushing seat and the circuit.

Preferably, the cable accessories include: a front cable accessory and a rear cable accessory, each of the front cable accessories and the rear cable accessory is connected to one of the high-voltage cables, and the front cable accessory is connected to the double-way The interfaces of the sleeve sockets are connected, and the rear cable accessories are connected with the front cable accessories. By sequentially inserting 1-2 rear cable accessories on the front cable accessories, the addition of high voltage cable branches can be realized.

Preferably, the surfaces of the three cables at the inner side of the box close to the wire connection barrel are covered with high-voltage cable three-finger sleeves to protect the branches of the high-voltage cables.

Preferably, it also includes rubber sealing half-rings for sealing the high-voltage cables, the two rubber sealing half-rings are interlocked and placed in the wire connection barrel, and metal sealing rings are arranged on both sides of the rubber sealing half-rings. The extruded strip, the inside of the rubber sealing half ring is pierced with bolts, and the metal extruded strips on both sides of the rubber sealing half ring are connected by bolts. The rubber sealing half ring is extruded by two metal extrusion strips, and the rubber sealing half ring will protrude to the periphery after being squeezed, so that the rubber sealing half ring and the outer seal of the high-voltage cable are more tightly sealed.

Preferably, a cable fixing clip for positioning the high-voltage cable is provided on a side of the box close to the wire connecting cylinder, and the positioned cable fixing clip is welded and fixed to the side wall of the box. After the construction of the high-voltage cable is completed, the cable fixing clip can position the high-voltage cable, which can ensure that the external high-voltage cable will not damage the running cable accessories and double-pass bushing seat due to external stress, causing electrical accidents.

Preferably, the installation board is also provided with a cable sheath protector and a grounding copper bar, one end of the cable sheath protector is connected to the armored layer of the high-voltage cable, and the other end is connected to the grounding copper bar. The other end of the grounding copper bar is grounded; the number of the cable sheath protector is the same as the number of the double-way bushing seat. The outside of the high-voltage cable is wrapped with a cable metal sheath. One end of the cable metal sheath is grounded and the other end is not grounded. When lightning waves or internal overvoltage flow along the cable core, a higher impact will occur at the ungrounded end of the cable metal sheath. Overvoltage, or when the system short-circuit accident current flows through the high-voltage cable core, a high power frequency induced overvoltage will also appear at the ungrounded end of the sheath, which may break down the outer sheath insulation of the high-voltage cable, causing The multi-point grounding fault of the cable metal sheath will seriously affect the normal operation of the power cable and even greatly reduce the service life of the high-voltage cable. The cable sheath protector can limit the induced voltage and fault overvoltage on the cable metal sheath (or metal sheath). High-voltage cables play a protective role.

Preferably, a plurality of first observation holes are provided on the side wall of the box, so as to facilitate the observation of the operation status of each component inside the box, especially in the middle connection shaft of the cable, maintenance personnel can observe the operation status of the high-voltage cable at any time.

Preferably, a high-voltage live display is provided on the inner wall of the box, and a second observation hole for observing the high-voltage live display is provided on the box, so as to facilitate observation of the operation of the high-voltage live display.

Preferably, the edge of the fastening part between the box body and the cover plate is provided with a folded edge extending to the outside of the box body, the top of the folded edge is provided with a sealing strip, and the cover plate and the box body The folded edges are hermetically connected by the sealing strip.

It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a high-protection cable distribution box, and its beneficial effects are:

(1) The middle and high voltage cables of the present invention are connected through double-pipe sockets, and the interface of the double-way sockets can be connected to front-plug cable accessories, and 1-2 rear-plug cable accessories can be connected to the front-plug cable accessories, and then through the double-pipe The bushing socket can increase the high-voltage cable branch to realize the transformation of the high-voltage cable line;

(2) The cable sheath protector can limit the induced voltage and fault overvoltage on the cable metal sheath, and protect the high-voltage cable;

(3) Set the rubber sealing half ring in the wire connection cylinder, and squeeze the rubber sealing half ring through two metal extrusion strips, so that the rubber sealing half ring and the outer seal of the high-voltage cable are more tightly sealed, and the high-voltage cable distribution box is added tightness;

(4) The first observation hole and the second observation hole are set on the side wall of the box to facilitate the observation of the operation status of various components inside the box and the high-voltage live display, especially in the middle connection well of the cable, maintenance personnel can observe the high-voltage cable at any time operating status.

What needs to be explained is: the high-voltage cable three-finger sleeve is used to protect the three-core branch of the high-voltage cable, and plays the role of insulation, sealing and branch protection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Accompanying drawing of Fig. 1 is the structural representation of the cable distribution box provided by the present invention;

Accompanying drawing of Fig. 2 is the structural representation of the casing provided by the present invention;

Fig. 3 accompanying drawing is the top view of the casing provided by the present invention;

Accompanying drawing of Fig. 4 is the front view of the casing internal structure provided by the present invention;

Fig. 5 accompanying drawing is the structural schematic diagram of the wire connecting barrel provided by the present invention;

Figure 6 is a schematic diagram of the structure of the rubber sealing half ring provided by the present invention.

Among them, in the figure,

01-box;

011-wire connection barrel; 012-rubber sealing half ring; 013-metal extrusion strip; 014-first observation hole; 015-second observation hole;

02-cover;

03-cable accessories;

031- Front cable accessories; 032- Rear cable accessories;

04-High voltage cable; 05-Double-way bushing seat; 06-Installation plate; 07-Metal bead; 08-Three-finger sleeve for high voltage cable; ; 12-high voltage live display; 13-sealing strip; 14-installation bracket; 15-joint.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1:

Embodiment 1 of the present invention discloses a high-protection cable distribution box, which connects at least two sections of high-voltage cables; it also includes: box body 01, cover plate 02, cable accessories 03, and a double-through sleeve for connecting two sections of high-voltage cables 04 Tube base 05; the opening on the upper side of the box body 01 is used as an operation port for construction wiring construction; the cover plate 02 is fastened with the opening end of the box body 01, and the cover plate 02 is fixed with screws consistent with the box body 01 hole; one end of the cable accessory 03 is connected to one end of the high-voltage cable 04, and the other end is connected to the double-ended casing seat 05; the two ends of the box body 1 are provided with a wire connecting cylinder 011 for the other end of the high-voltage cable 04 to pass through; There are three casing sockets 05 arranged side by side inside the box body 01; the interior is conductive through copper, so that the high-voltage cables 04 connected to the two interfaces of the double-way casing socket 05 are connected; There are two interfaces, and the interface of the double-way sleeve socket 05 is connected to the cable accessory 03. The box 01 is made of stainless steel sheet metal with a thickness of 2.0-3mm. The joints of the plates are fully welded to ensure the airtightness of the box. The high-voltage line is divided into ABC three-phase, double-pass bushing 05 and cable sheath protection There are three devices 10, which are A phase, B phase and C phase respectively.

In order to further optimize the above-mentioned technical scheme, the bottom surface inside the box body 01 is provided with a mounting plate 06, the double-way bushing seat 05 is U-shaped, and the middle part of the three double-way bushing seats 05 is provided with a metal bead 07, and the metal bead 07 The two ends of the two-way bushing are connected to the mounting plate 06, and the three double-pass bushing seats 05 are arranged side by side, and the metal bead 07 is placed in the middle of the three double-pass bushing seats 05, and the three double-pass bushing seats 05 are fixed on the mounting plate 06, the metal bead 07 is fixed by fixing bolts.

In order to further optimize the above technical solution, the cable attachment 03 includes: the front cable attachment 031 and the rear cable attachment 032, the front cable attachment 031 and the rear cable attachment 032 are each connected to a high-voltage cable 04, the front cable attachment 031 is connected to the double The interface of the through-sleeve socket 05 is connected, and the rear cable accessory 032 is connected with the front cable accessory 031. The tail socket of the front cable accessory 031 is blocked with an insulating plug or connected with the rear cable accessory 032 or connected with a lightning arrester; The tail socket is connected, and the tail socket of the rear plug cable accessory 032 can be connected to the next rear plug cable accessory 032 or blocked with an insulating plug or connected with a lightning arrester.

In order to further optimize the above-mentioned technical scheme, the interface at the same end of the three double-way bushing sockets 05 is connected to the front cable accessory 031, and the tail interface of the front cable accessory 031 is connected to the rear cable accessory 032; the double-way bushing socket 05 Only the front plug cable accessory 031 is connected to the interface at the other end.

In order to further optimize the above technical solution, the surface of the three high-voltage cables 04 near the wire connection cylinder 011 inside the box body 01 is wrapped with a high-voltage cable three-finger sleeve 08, which protects the branches of the high-voltage cables 04. As shown in Figure 3, the high-voltage cable 04 is branched at the double-way bushing seat 05, and then passes through the protective three-finger sleeve in sequence, and then passes through the outside of the box 01 connected to the wire connecting cylinder 011, and the high-voltage cable 04 is placed It is inside the wire connection barrel 011 and is sealed and connected by two rubber sealing half rings 012.

In order to further optimize the above technical solution, it also includes a rubber sealing half-ring 012 for sealing the high-voltage cable 04. The two rubber sealing half-rings 012 are interlocked and placed in the wire connection cylinder 011, and the two sides of the rubber sealing half-ring 012 are set There is a metal extruded strip 013, the inside of the rubber sealing half ring 012 is pierced with bolts, and the metal extruding strips 013 on both sides of the rubber sealing half ring 012 are connected by bolts. Both ends of the bolt are connected with nuts, and the bolts are tightened by the nuts to squeeze the rubber sealing half-ring 012, and then seal the high-voltage cable 04 and the rubber sealing half-ring 012, and the rubber sealing half-ring 012 is in contact with the sealed high-voltage cable 04 A plurality of semi-annular protrusions are arranged side by side on one side, which is more conducive to the sealed connection with the high-voltage cable 04.

In order to further optimize the above-mentioned technical solution, as shown in Figure 2-4, when only connecting the front cable accessory 031 at the interface of the double-way bushing seat 05, on the box body 01 close to the interface of the double-way bushing seat 05 Set a wire connection barrel 011; when connecting the front cable accessory 031 and a rear cable accessory 032 at the interface of the double-way bushing seat 05, set two Wire connection barrel 011; when connecting the front cable accessory 031 and the two rear cable accessories 032 at the interface of the double-way bushing seat 05, set three wires on the box body 01 close to the interface of the double-way bushing seat 05 Connecting cylinder 011;

In order to further optimize the above technical solution, a cable fixing clip 09 for positioning the high-voltage cable 04 is provided on the side of the box body 01 close to the wire connecting cylinder 011, and the positioned cable fixing clip 09 is connected to the side wall of the box body 01, as As shown in Figure 3-4, the fixing clip 09 includes: a fixing plate in the middle and pressing plates located on both sides of the fixing plate. The high-voltage cable 04 with the high-voltage cable three-finger sleeve 08 is placed between the fixing plate and the pressing plate for fixed clamping. The fixing plate is fixedly connected with the side wall of the box body 01. The fixing plate and the pressing plate are connected by bolts, and the nuts are tightened. , realize the clamping of the high-voltage cable 04 through the adjusting nut.

In order to further optimize the above-mentioned technical scheme, a cable sheath protector 10 and a grounding copper bar 11 are also provided on the mounting plate 06. One end of the cable sheath protector 10 is connected to the armored layer of the high-voltage cable 04, and the other end is connected to the grounding copper bar. The rows 11 are connected, and the other end of the grounding copper row 11 is grounded; the number of cable sheath protectors 10 and the number of double-way bushing sockets 05 are three, which is the same as the number of connected high-voltage cables 04. The grounding copper bar 11 is used for the shielding of the high-voltage cable 04 and the grounding of the cable armor layer, so as to ensure the stability of the equipment circuit system, discharge the generated static electricity, and provide safety protection for the staff.

In order to further optimize the above technical solution, a plurality of first observation holes 014 are opened on the side wall of the box body 01 .

In order to further optimize the above-mentioned technical solution, a high-voltage live display 12 is provided on the inner wall of the box 01 , and a second observation hole 015 for observing the high-voltage live display 12 is provided on the box 01 . The inside of the double-way bushing socket 05 is provided with a capacitive charged sensor, which can provide electric energy for the high-voltage charged display 12 .

In order to further optimize the above-mentioned technical solution, a folded edge extending to the outside of the box body 01 is provided at the edge of the fastening part of the box body 01 and the cover plate 02, and a blind rivet nut is provided on the folded edge, and a sealing strip 13 is provided on the top of the folded edge. The flaps of the cover plate 02 and the box body 01 are sealed and connected by a sealing strip 13 . After the cover plate 02 is fastened with the box body 01, the cover plate 02, the sealing strip 13, and the box body 01 are fixedly connected by fastening bolts.

In order to further optimize the above-mentioned technical solution, the bottom of the box 01 is also connected with a mounting bracket 14 for fixing. Through the installation bracket 14, the box 01 can be mounted sideways on the wall of the cable well, and can also be flat-mounted on the ground of the cable well. on, or on a stand.

In order to further optimize the above technical solution, a joint 15 for grounding is provided on the outer surface of the box body 01 . The connector 15 is connected to the ground through wires to discharge the generated static electricity, thereby improving the stability of the circuit system of the equipment and providing safety protection for the staff.

Example 2:

The interface at the same end of the three double-way sleeve sockets 05 is connected to the front cable accessory 031, the tail interface of the front cable accessory 031 is connected to the rear cable accessory 032, and the rear interface of the rear cable accessory 032 is used if more The branch tap can be connected to another rear cable accessory 032; the interface at the other end of the double-way sleeve socket 05 is connected to the front cable accessory 031, and the tail interface of the front cable accessory 031 is connected to the rear cable accessory 032.

Other contents in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A high-protection cable distribution box, which connects at least two sections of high-voltage cables; it is characterized in that it also includes: a box body (01), a cover plate (02), a cable accessory (03), and is used to connect the two sections. The double-pass bushing seat (05) of the high-voltage cable (04); The upper side of the box (01) is open; The cover plate (02) is engaged with the opening side of the box body (01); One end of the cable accessory (03) is connected to one end of the high-voltage cable (04), and the other end is connected to the double-ended bushing seat (05); The two ends of the box (01) are provided with a wire connection barrel (011) for the other end of the high-voltage cable (04) to pass through; The double-way bushing seat (05) is provided with three and placed side by side inside the box (01); the double-way bushing seat (05) is provided with two interfaces, and the double-way bushing seat One interface of (05) is connected with one to three described cable accessories (03). 2. A high-protection cable distribution box according to claim 1, characterized in that, the bottom surface inside the box body (01) is provided with a mounting plate (06), and the double-way bushing seat (05) It is U-shaped, and there is a metal bead (07) above the middle of the three double-way casing seats (05), and the metal bead (07) is connected with the installation plate (06) by fixing bolts and fixes the Double-way casing socket (05). 3. A high-protection cable distribution box according to claim 1 or 2, characterized in that, the cable attachment (03) includes: a front-plug cable accessory (031) and a rear-plug cable accessory (032), the The front cable accessory (031) and the rear cable accessory (032) are each connected to one of the high-voltage cables (04), and the interface between the front cable accessory (031) and the double-way bushing seat (05) The ports are connected, and the rear cable accessory (032) is connected with the front cable accessory (031). 4. A high-protection cable distribution box according to claim 3, characterized in that, the surface of the three high-voltage cables (04) at the inner side of the box (01) close to the wire connecting cylinder (011) is wrapped with The high-voltage cable three-finger sleeve (08) plays a protective role on the branches of the high-voltage cable (04). 5. A high-protection cable distribution box according to claim 4, characterized in that, it also includes rubber sealing half rings (012) for sealing the high-voltage cables (04), two of the rubber sealing halves The rings (012) are interlocked and placed in the wire connection cylinder (011), and metal extrusion strips (013) are arranged on both sides of the rubber sealing half ring (012), and the rubber sealing half ring (012) Bolts are perforated inside the rubber seal half ring (012), and the metal extruded strips (013) on both sides of the rubber sealing half ring (012) are connected by bolts. 6. A high-protection cable distribution box according to any one of claims 1-2, 4-5, characterized in that, one of the boxes (01) close to the wire connection barrel (011) The side is provided with a cable fixing clip (09) for positioning the high-voltage cable (04), and the positioned cable fixing clip (09) is welded and fixed to the side wall of the box body (01). 7. A kind of high-protection cable distribution box according to claim 2, characterized in that, a cable sheath protector (10) and a grounding copper bar (11) are also provided on the mounting plate (06), so that One end of the cable sheath protector (10) is connected to the armor layer of the high-voltage cable (04), the other end is connected to the grounding copper bar (11), and the other end of the grounding copper bar (11) Grounding; the number of the cable sheath protector (10) is the same as the number of the double-way bushing seat (05). 8. A high-protection cable distribution box according to any one of claims 1-2, 4-5, 7, characterized in that a plurality of first observation boxes are set on the side wall of the box (01) hole (014). 9. A high-protection cable distribution box according to claim 8, characterized in that, the inner wall of the box (01) is provided with a high-voltage charged indicator (12), and the box (01) is provided with There is a second observation hole (015) for observing the high-voltage charged display (12). 10. A high-protection cable distribution box according to any one of claims 1-2, 4-5, 7, 9, characterized in that, the box body (01) and the cover plate (02) The edge of the fastening part is provided with a flanging extending to the outside of the box (01), the top of the flanging is provided with a sealing strip (13), and the cover plate (02) is connected to the box (01) The folded edges are sealed and connected by the sealing strip (13).