A low-voltage power distribution cabinet with pressure relief and explosion prevention for optical storage systems

Abstract

The application discloses a kind of light storage system pressure relief explosion-proof low voltage power distribution cabinet;Including cabinet, installation groove is provided in the inside of cabinet, pressure relief hole is opened in the both sides of cabinet, driving plate is slidably connected in the top of cabinet, the both sides of driving plate are connected with pressure relief sealing plate, and communication hole is opened in sealing plate;Bottom wiring port is opened in the bottom of cabinet, wiring board is rotatably connected on bottom wiring port, the both sides of driving plate are fixedly connected with control panel, and the bottom of two control panels is connected with limit sliding block;Wiring slot is opened on wiring board, and connecting plate is connected in wiring slot, and the both ends of connecting plate are slidably connected with wire pressing plate;Effectively solve the problem that main line continues to be electrified when short circuit, electric arc and other faults occur in the inside of cabinet, electric arc, fire and other dangerous working conditions are further intensified, even cause secondary failure;The application can quickly pull out the main line of power supply when explosion occurs, insulating protection is carried out to the electrified main line, and the safety of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a pressure relief explosion-proof low-voltage power distribution cabinet for optical storage system. BACKGROUND

[0002] In the optical storage integrated system, the low-voltage power distribution cabinet is the key equipment for power distribution, control and protection, and its operation reliability is directly related to the safety of the entire power station. During the operation of the power distribution cabinet, loop short circuit faults caused by line aging, high temperature weather and human operation errors are prone to occur. When electrical short circuit occurs inside the cabinet and electric arc is generated, the huge energy will cause the pressure and temperature in the cabinet to rise sharply in an instant. To deal with such risks, low-voltage power distribution cabinets with pressure relief explosion-proof function have appeared in the prior art. By setting pressure relief channels and explosion-proof housings, high-pressure gas generated by internal faults can be quickly released to avoid cabinet explosion and reduce the risk of explosion diffusion.

[0003] However, the existing pressure relief explosion-proof low-voltage power distribution cabinet for optical storage system still has key technical defects: when short circuit, electric arc and other faults occur inside the cabinet, although the pressure relief explosion-proof structure can alleviate the explosion risk, the main line loop of the power distribution cabinet usually remains live. This problem will cause multiple safety hazards: first, the continuous live main line after the fault will further aggravate the dangerous working conditions such as electric arc and fire, and even cause secondary faults; second, if the maintenance personnel do not realize that the main line is still live when handling the fault, electric shock accidents are easy to occur, which seriously threatens personal safety; third, the live main line loop may form an abnormal loop with the damaged cabinet and line after the fault, which expands the fault influence range and prolongs the overall downtime of the optical storage system.

[0004] Therefore, the present application provides a pressure relief explosion-proof low-voltage power distribution cabinet for optical storage system to solve the above problems. SUMMARY

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present application provides a pressure relief explosion-proof low-voltage power distribution cabinet for optical storage system, which effectively solves the problem that the main line loop of the power distribution cabinet usually remains live when short circuit, electric arc and other faults occur inside the cabinet, and the continuous live main line will further aggravate dangerous working conditions such as electric arc and fire, and even cause secondary faults.

[0006] The technical problem solved by the present application is as follows: a pressure relief explosion-proof low-voltage power distribution cabinet for optical storage system, comprising a cabinet body, a plurality of installation grooves are arranged inside the cabinet body, a plurality of electrical elements are arranged inside the installation grooves, a plurality of pressure relief holes are formed on both sides of the cabinet body, a driving plate is slidably connected to the top of the cabinet body, a pressure relief sealing plate for shielding the pressure relief holes is fixedly connected to both sides of the driving plate, and a plurality of communication holes matched with the pressure relief holes are formed on the sealing plate.

[0007] The bottom of the cabinet body is provided with a bottom wiring port, a wiring board is rotatably connected to the bottom wiring port, a torsion spring is arranged between the wiring board and the cabinet body, control boards are fixedly connected to both sides of the drive plate, and limiting sliding blocks for limiting rotation of the wiring board are slidably connected to the bottom of the two control boards;

[0008] A plurality of wiring grooves are formed in the wiring board, connecting plates are fixedly connected inside the wiring grooves, the connecting plates are used to connect one end of two wires, wire pressing plates are slidably connected to the upper and lower ends of the connecting plates, and triangular guide blocks are fixedly connected to the side of the wire pressing plates away from the connecting plates;

[0009] Symmetrically arranged control links are slidably connected to both ends of the wiring board, a plurality of pressing blocks matched with the guide blocks are slidably connected to the control links, the pressing blocks are arranged in right-angled trapezoidal shapes, pressing bolts are rotatably connected to the pressing blocks, and the pressing bolts are threadedly connected with the control links;

[0010] The control boards are fixedly connected with control structures for controlling sliding of the control links.

[0011] Preferably, the control structures include wiring top plates fixedly connected to the bottom of the control board, the wiring top plates are used to push the control links to move towards the center of the wiring board, and decompression springs are arranged between the ends of the control links close to each other and the wiring board.

[0012] Preferably, wire pulling boxes for fixing wires are slidably connected inside the wiring grooves, the wire pulling boxes are provided with arc-shaped pushing blocks at the top, and the bottom of the bottom wiring port is fixedly connected with pushing guide blocks matched with the pushing blocks;

[0013] The bottom of the cabinet body is fixedly connected with a strip-shaped plate located below the bottom wiring port, and the upper end of the strip-shaped plate is fixedly connected with an arc-shaped top plate used to push the wire pulling box.

[0014] Preferably, the connecting plates are rotatably connected with two oppositely arranged protective sleeves at the lower end, and the side of the protective sleeves close to each other is provided with a protective groove;

[0015] The side of the protective sleeves away from each other is arranged obliquely, and the two sides of the wire pulling box are fixedly connected with protective extrusion blocks matched with the protective sleeves.

[0016] Preferably, the swinging end of the wiring board is fixedly connected with a wiring sealing plate used to seal the bottom wiring port.

[0017] Preferably, the cabinet body is detachably connected with positioning plates at both ends, the installation groove body is provided with rotating shafts at both sides, the rotating shafts are rotatably connected to the positioning plates, torsional springs are installed on the rotating shafts, and the control plate is provided with limiting plates for limiting rotation of the installation groove body.

[0018] The positioning plates are provided with support plates for limiting the rotation angle of the installation groove body.

[0019] The cabinet body is detachably connected with a sandbox inside, and the sandbox is provided with sand outlet structures.

[0020] Preferably, the sand outlet structure comprises a plurality of sand outlet openings formed in the bottom of the sandbox, the bottom of the sandbox is slidably connected with two symmetrically arranged shielding plates, and the shielding plates are provided with shielding holes matched with the sand outlet openings.

[0021] The control plate is provided with sand outlet driving structures for controlling sliding of the shielding plates.

[0022] Preferably, the sand outlet driving structure comprises a trapezoidal driven block fixedly connected to one end of the shielding plate, and the control plate is provided with a communication driving block matched with the trapezoidal driven block.

[0023] Shielding pushing springs are arranged between the shielding plates and the sandbox.

[0024] Preferably, the rotating shafts at both sides of the installation groove body are located below the center of the installation groove body.

[0025] Preferably, the cross section of the sandbox is a right trapezoid.

[0026] The beneficial effects of the present application are:

[0027] The present application adds a cabinet body, an installation groove body, a pressure relief hole, a driving plate, a pressure relief sealing plate, a communication hole, a bottom wiring port, a wiring plate, a torsional spring, a control plate, a limiting sliding block, a wiring groove, a connecting plate, a wire pressing plate, a guide block, a control connecting rod, a pressing block and a pressing bolt to solve the problem that when a short circuit, electric arc and other faults occur inside the cabinet body, the continuous electrification of the main line will further intensify the dangerous working conditions such as electric arc and fire, and even cause secondary faults.

[0028] The addition of a wire pulling box, a pushing block, a pushing guide block, a strip-shaped plate, an arc-shaped top plate, a protective sleeve, a protective groove and a protective extrusion block realizes the operation of insulating protection of the main line removed from the connecting plate.

[0029] The addition of a positioning plate, a rotating shaft, a torsional spring, a limiting plate, a support plate, a sandbox, a sand outlet opening, a shielding plate and a shielding hole realizes the prevention of burning of electrical elements inside the power distribution cabinet.

[0030] This invention can quickly pull out the energized main line in the event of an explosion, providing insulation protection for the energized main line and greatly improving the safety of the device. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall assembly of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the internal structure of the terminal block of the present invention;

[0035] Figure 4 This is a schematic diagram of the junction box of the present invention;

[0036] Figure 5 This is a cross-sectional schematic diagram of the cable disconnect box of the present invention;

[0037] Figure 6 This is a schematic diagram of the installation slot of the present invention in use;

[0038] Figure 7 This is the present invention. Figure 6 Enlarged view of a portion of point A in the middle;

[0039] Figure 8 This is a schematic diagram showing the location of the connecting drive block in this invention;

[0040] Figure 9 This is a schematic diagram of the sandbox of the present invention;

[0041] Figure 10 This is a schematic diagram of the terminal block of the present invention in use;

[0042] Figure 11 This is a cross-sectional view of the wiring board of the present invention;

[0043] Figure 12 This is the present invention. Figure 11 A magnified view of a portion of point B in the middle.

[0044] In the figure, 1, cabinet body; 2, installation groove body; 3, pressure relief hole; 4, driving plate; 5, pressure relief sealing plate; 6, communication hole; 7, bottom wiring port; 8, wiring plate; 9, control plate; 10, limiting sliding block; 11, wiring groove; 12, connecting plate; 13, wire pressing plate; 14, guide block; 15, control connecting rod; 16, pressing block; 17, pressing bolt; 18, wiring top plate; 19, wire pulling box; 20, pushing block; 21, pushing guide block; 22, strip-shaped plate; 23, arc-shaped top plate; 24, protective sleeve; 25, protective groove; 26, protective extrusion block; 27, wiring sealing plate; 28, positioning plate; 29, limiting plate; 30, supporting plate; 31, sand box; 32, sand outlet; 33, shielding plate; 34, shielding hole; 35, trapezoidal driven block; 36, communication driving block; 37, shielding pushing spring. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in detail below with reference to the drawings.

[0046] The above embodiments of the present application are described with reference to the drawings, and other advantages and effects of the present application will be more clearly understood from the following examples.

[0047] It is to be understood that the phraseology and terminology used herein is for the purpose of description and not of limitation. Accordingly, the use of "including" and "comprising" and variations thereof herein is intended to be equivalent to the term "consisting of" to mean the inclusion of an item or items, but not the exclusion of any additional item or items. Further, the use of "including," "comprising," "having," "storing," "outputting" or "including," "having," "containing," "outputting," "providing," "determining," or "communicating," "coupling," "connecting" along with their derivatives, etc., are not meant to be limiting. It is also noted that individual features of the embodiments of the present application could be used separately or in any combination thereof.

[0048] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only show the components related to the present application in the drawings, not drawn according to the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be a random change, and the component layout form can also be more complex.

[0049] In addition, in the following description, specific details are provided in order to facilitate a thorough understanding of the examples. However, one skilled in the relevant art will understand that the aspects described can be practiced without these specific details.

[0050] Embodiment one, refer to the description attached Figures 1-12 A low-voltage power distribution cabinet for pressure relief and explosion prevention of an optical storage system, comprising a cabinet body 1, a plurality of installation grooves 2 are arranged inside the cabinet body 1, a plurality of electrical elements are arranged inside the installation grooves 2, the electrical elements include circuit breakers, disconnectors, transformers, grounding switches and the like, a plurality of pressure relief holes 3 are formed on both sides of the cabinet body 1, a driving plate 4 is slidingly connected to the top of the cabinet body 1, a pressure relief sealing plate 5 for covering the pressure relief holes 3 is fixedly connected to both sides of the driving plate 4, a plurality of communication holes 6 matched with the pressure relief holes 3 are formed on the sealing plate 5, a sealing downward spring is arranged between the upper end surface of the driving plate 4 and the top of the cabinet body 1, in the initial state, the driving plate 4 is pushed downward to the limit position under the action of the sealing downward spring, at this time, the sealing plate 5 covers the pressure relief holes 3, and dust and sundries outside the cabinet body 1 cannot enter the inside of the cabinet body 1 through the pressure relief holes 3;

[0051] In use, when electrical short circuit occurs inside the cabinet body 1 and electric arc is generated, the huge energy will cause the pressure and temperature in the cabinet 1 to rise sharply in an instant, at this time, the pressure generated inside the cabinet body 1 pushes the driving plate 4 to move upward until the communication holes 6 and the pressure relief holes 3 are communicated, and the inside of the cabinet body 1 is relieved, after the relief is completed, the driving plate 4 is pushed downward to the initial position under the action of the sealing downward spring, the communication holes 6 are moved downward, and the sealing plate 5 covers the pressure relief holes 3.

[0052] The bottom of the cabinet body 1 is provided with a bottom wiring port 7, and a wiring plate 8 is rotatably connected to the bottom wiring port 7. The swinging end of the wiring plate 8 is fixedly connected with a wiring sealing plate 27 for sealing the bottom wiring port 7. The wiring sealing plate 27 is used for sealing the bottom wiring port 7. A torsion spring is arranged between the wiring plate 8 and the cabinet body 1. The torsion spring is used to push the wiring plate 8 to rotate to cover the bottom wiring port 7. The two sides of the driving plate 4 are fixedly connected with control plates 9. The bottom of each control plate 9 is slidingly connected with a limiting slide 10 for limiting the rotation of the wiring plate 8. The control plate 9 and the limiting slide 10 are slidingly connected. A limiting spring is arranged between the control plate 9 and the limiting slide 10. The limiting slide 10 is arranged in a trapezoidal shape. In use, the swinging end of the wiring plate 8 is rotated. When the inclined surface of the limiting slide 10 contacts the wiring plate 8, the limiting slide 10 is pushed away from the wiring plate 8. When the wiring plate 8 is rotated to a vertical position, the limiting slide 10 is pushed towards the wiring plate 8 under the action of the limiting spring. The straight side of the limiting slide 10 contacts the side surface of the wiring plate 8, so as to limit the wiring plate 8 to a vertical state.

[0053] A plurality of wiring grooves 11 are arranged on the wiring plate 8. A connecting plate 12 is fixedly connected in the wiring groove 11. The connecting plate 12 is used to connect one end of two electric wires. In use, the live main wire is connected to the lower end of the connecting plate 12. The other end of the cable is connected to an electrical element and the upper end of the connecting plate 12, respectively. The pressure wire plate 13 is slidingly connected to the upper and lower ends of the connecting plate 12. The pressure wire plate 13 is used to press the cable and the live main wire, so as to make them in close contact with the connecting plate 12. The pressure wire plate 13 is fixedly connected with a triangular guide block 14 on the side away from the connecting plate 12.

[0054] The control connecting rods 15 are symmetrically arranged and slidingly connected to the two ends of the wiring plate 8. A plurality of pressure blocks 16 matched with the guide blocks 14 are slidingly connected to the control connecting rods 15. The pressure blocks 16 are arranged in a right-angled trapezoidal shape. The pressure blocks 16 are rotatably connected with pressure bolts 17.

[0055] The control structure for pushing the control connecting rods 15 to slide is fixedly connected to the control plate 9. The control structure includes a wiring top plate 18 fixedly connected to the bottom of the control plate 9. The wiring top plate 18 is used to push the control connecting rods 15 to move towards the center of the wiring plate 8. The control connecting rods 15 are provided with release springs between the ends close to each other and the wiring plate 8. The release springs are used to push the control connecting rods 15 to move away from the center of the wiring plate 8. The pressure wire plate 13 can move freely.

[0056] In the initial state, the wiring top plate 18 and the control connecting rod 15 are in contact, and under the action of the wiring top plate 18, the control connecting rod 15 is pushed to move close to the center position of the wiring plate 8. In use, one end of the main wire is inserted into the lower end of the connecting plate 12, one end of the other cable is connected to the upper end of the connecting plate 12, the control connecting rod 15 is threadedly connected with the compression bolt 17, the compression bolt 17 is rotated to push the compression block 16 to move close to the guide block 14, and after the compression block 16 and the guide block 14 are in contact, the compression bolt 17 is continuously rotated to push the compression block 16 and the guide block 14 to compress the wire pressing plate 13 close to the connecting plate 12, so as to compress the cable and the live main wire;

[0057] In the specific implementation, when an electrical short circuit occurs in the cabinet 1 and an electric arc is generated, a huge amount of energy will cause the pressure and temperature in the cabinet 1 to rise sharply in an instant. At this time, the pressure generated in the cabinet 1 pushes the driving plate 4 to move upward;

[0058] The upward movement of the driving plate 4 drives the sealing plate 5 to move upward, and the communication hole 6 and the pressure relief hole 3 are communicated to relieve the pressure in the cabinet 1. When the driving plate 4 moves upward, the limiting sliding block 10 and the wiring plate 8 are out of contact, and under the action of the torsional spring, the wiring plate 8 is pushed to rotate to cover the bottom wiring port 7;

[0059] When the driving plate 4 moves upward, the wiring top plate 18 and the control connecting rod 15 are out of contact, and under the action of the pressure relief spring, the control connecting rod 15 is pushed to move away from the center position of the wiring plate 8. At this time, the control connecting rod 15 drives the compression block 16 to move synchronously, and the inclined surface of the compression block 16 and the inclined surface of the guide block 14 are out of contact. At this time, the live main wire and the cable can be pulled out from between the wire pressing plate 13 and the connecting plate 12.

[0060] In the second embodiment, the wiring slot 11 is slidably connected with a wire pulling box 19 for fixing the electric wire. In installation, the live main wire is fixed on the wire pulling box 19, the wire pulling box 19 is provided with an arc-shaped pushing block 20 at the top, the bottom wiring port 7 is fixedly connected with a pushing guide block 21 matched with the pushing block 20 at the bottom, and the pushing guide block 21 is arranged in a trapezoidal shape.

[0061] The connecting plate 12 is rotatably connected with two oppositely arranged protective sleeves 24, and the protective sleeves 24 are provided with protective grooves 25 on the sides close to each other.

[0062] The sides of the protective sleeves 24 away from each other are arranged obliquely, the protective sleeves 24 are made of rubber material, and the wire pulling box 19 is fixedly connected with protective extrusion blocks 26 matched with the protective sleeves 24 on the two sides.

[0063] In use, when the limiting slider 10 and the terminal block 8 are out of contact, the terminal block 8 is pushed to rotate under the action of the torsion spring to cover the bottom terminal port 7, when the terminal block 8 rotates, the arc surface of the pushing block 20 and the inclined surface of the pushing guide block 21 are in contact, the pushing block 20 and the wire pulling box 19 are driven to slide in the terminal slot 11 through the inclined surface of the pushing guide block 21, and the wire pulling box 19 is moved away from the connecting plate 12.

[0064] When the wire pulling box 19 moves away from the connecting plate 12, the live main wire is pulled out from the inside of the connecting plate 12, the exposed wire head of the live main wire is located in the protection groove 25, then the protection extrusion block 26 and the inclined surface of the protection sleeve 24 are in contact, the protection extrusion block 26 pushes the protection sleeve 24 to clamp the live main wire in the direction of approaching each other, and the exposed wire head is prevented from contacting the cabinet 1.

[0065] The cabinet 1 is fixedly connected with a strip-shaped plate 22 located below the bottom terminal port 7, the strip-shaped plate 22 is fixedly connected with an arc-shaped top plate 23 for pushing the wire pulling box 19, after the terminal block 8 is rotated to the vertical state, the bottom of the wire pulling box 19 and the arc surface of the arc-shaped top plate 23 are in contact, the wire pulling box 19 is pushed upward after being guided through the arc surface of the arc-shaped top plate 23, the wire pulling box 19 is fixed in the current position, and the strip-shaped plate 22 is fixedly connected with the arc-shaped top plate 23. Figure 3 .

[0066] In the third embodiment, the cabinet 1 is detachably connected with a positioning plate 28 at both ends, the installation groove body 2 is provided with a rotating shaft which is rotatably connected to the positioning plate 28, and a torsion spring is installed on the rotating shaft, and the control plate 9 is provided with a limiting plate 29 for limiting the rotation of the installation groove body 2;

[0067] The positioning plate 28 is provided with a supporting plate 30 for limiting the rotation angle of the installation groove body 2;

[0068] In the initial state, the installation groove body 2 is in the vertical state, the back surface of the installation groove body 2 is attached to the limiting plate 29, and the installation groove body 2 is limited in the current position by the limiting plate 29;

[0069] In use, when the driving plate 4 moves upward, the control plate 9 moves upward, the control plate 9 drives the limiting plate 29 to move upward synchronously, until the limiting plate 29 and the installation groove body 2 are out of contact, at this time, the installation groove body 2 is pushed to rotate under the action of the torsion spring, and stops in the current position after the back surface of the installation groove body 2 is in contact with the supporting plate 30, at this time, the installation groove body 2 is in the horizontal state.

[0070] The cabinet body 1 is detachably connected with a sand box 31, sand is filled into the sand box 31 during use, and the sand box 31 is provided with a sand outlet structure, which comprises a plurality of sand outlet openings 32 formed in the bottom of the sand box 31, and two symmetrically arranged cover plates 33 are slidably connected to the bottom of the sand box 31, and cover holes 34 are formed in the cover plates 33 and matched with the sand outlet openings 32;

[0071] The control plate 9 is provided with a sand outlet driving structure for controlling the sliding of the cover plates 33, the sand outlet driving structure comprises trapezoidal driven blocks 35 fixedly connected to one end of the cover plates 33, and the control plate 9 is provided with communicating driving blocks 36 matched with the trapezoidal driven blocks 35, and the communicating driving blocks 36 are triangularly arranged;

[0072] Cover pushing springs 37 are arranged between the cover plates 33 and the sand box 31.

[0073] In the initial state, the cover plates 33 are pulled to move towards each other under the action of the cover pushing springs 37, so that the cover plates 33 cover the sand outlet openings 32 to prevent the sand in the sand box 31 from flowing out;

[0074] During use, when the control plate 9 moves upwards, the communicating driving blocks 36 move upwards synchronously, the inclined surfaces of the communicating driving blocks 36 are in contact with the inclined surfaces of the trapezoidal driven blocks 35, the communicating driving blocks 36 push the trapezoidal driven blocks 35 to slide and drive the cover plates 33 to move away from each other, so that the sand outlet openings 32 and the cover holes 34 are communicated, at this time, the sand flows out through the sand outlet openings 32 and the cover holes 34 and flows into the installation groove 2 to bury the electrical components to prevent the electrical components from catching fire.

[0075] The rotating shafts on both sides of the installation groove 2 are located below the center of the installation groove 2, so that when the installation groove 2 is rotated to a horizontal state, the rotating shafts on both sides of the installation groove 2 and the support plate 30 support the bottom of the installation groove 2, and the sand falls into the installation groove 2 to prevent the installation groove 2 from tilting under the action of gravity.

[0076] The cross section of the sand box 31 is arranged as a right-angled trapezoid, so as to facilitate the sand to flow out through the sand outlet openings 32.

[0077] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pressure relief explosion-proof low-voltage power distribution cabinet for optical storage systems, comprising a cabinet body (1), a plurality of installation grooves (2) are arranged inside the cabinet body (1), a plurality of electrical elements are arranged inside the installation grooves (2), characterized in that, The cabinet body (1) is provided with a plurality of pressure relief holes (3) on both sides, the top of the cabinet body (1) is slidably connected with a driving plate (4), the driving plate (4) is fixedly connected with a pressure relief sealing plate (5) on both sides for covering the pressure relief holes (3), a plurality of communication holes (6) are formed in the sealing plate (5) and matched with the pressure relief holes (3); The bottom of the cabinet body (1) is provided with a bottom wiring port (7), the bottom wiring port (7) is rotatably connected with a wiring plate (8), a torsional spring is arranged between the wiring plate (8) and the cabinet body (1), the driving plate (4) is fixedly connected with a control plate (9) on both sides, and the bottom of the two control plates (9) is slidably connected with a limiting sliding block (10) for limiting the rotation of the wiring plate (8); A plurality of wiring grooves (11) are formed in the wiring plate (8), the wiring grooves (11) are fixedly connected with a connecting plate (12) inside, the connecting plate (12) is used for connecting one end of two wires, and the connecting plate (12) is slidably connected with a wire pressing plate (13) at both ends; The wiring plate (8) is slidably connected with symmetrically arranged control connecting rods (15) at both ends, the control connecting rods (15) are slidably connected with a plurality of pressing blocks (16) matched with the guide blocks (14), the pressing blocks (16) are arranged in a right trapezoidal shape, the pressing blocks (16) are rotatably connected with pressing bolts (17), and the pressing bolts (17) are threadedly connected with the control connecting rods (15); The control plate (9) is fixedly connected with a control structure for controlling the sliding of the control connecting rods (15); The control structure comprises a wiring top plate (18) fixedly connected to the bottom of the control plate (9), the wiring top plate (18) is used for pushing the control connecting rods (15) to move towards the center position of the wiring plate (8), and a decompression spring is arranged between the ends of the control connecting rods (15) close to each other and the wiring plate (8); The wiring grooves (11) are slidably connected with a wire pulling box (19) for fixing wires inside, the wire pulling box (19) is provided with an arc-shaped pushing block (20) at the top, and the bottom wiring port (7) is fixedly connected with a pushing guide block (21) matched with the pushing block (20); The cabinet body (1) is fixedly connected with a strip-shaped plate (22) below the bottom wiring port (7), and the strip-shaped plate (22) is fixedly connected with an arc-shaped top plate (23) at the upper end for pushing the wire pulling box (19); The lower end of the connecting plate (12) is rotatably connected with two oppositely arranged protective sleeves (24), and the side close to each other of the protective sleeves (24) is provided with a protection groove (25); The side away from each other of the protective sleeves (24) is arranged obliquely, and the inside of the wire pulling box (19) is fixedly connected with a protection extrusion block (26) matched with the protective sleeves (24).

2. The low-voltage power distribution cabinet according to claim 1, characterized in that, The swing end of the terminal block (8) is fixedly connected to a terminal sealing plate (27) for sealing the bottom terminal (7).

3. The low-voltage power distribution cabinet according to claim 1, characterized in that, The cabinet (1) has a detachable positioning plate (28) at both ends. The mounting groove (2) has a rotating shaft on both sides. The rotating shaft is rotatably connected to the positioning plate (28) and a torsion spring is installed on the rotating shaft. The control plate (9) has a limiting plate (29) for limiting the rotation of the mounting groove (2). The positioning plate (28) is provided with a support plate (30) for limiting the rotation angle of the mounting groove (2); The cabinet (1) is detachably connected to a sand box (31), and the sand box (31) is equipped with a sand discharge structure.

4. The low-voltage power distribution cabinet according to claim 3, characterized in that, The sand discharge structure includes multiple sand discharge ports (32) opened at the bottom of the sand box (31). Two symmetrically arranged shielding plates (33) are slidably connected to the bottom of the sand box (31). The shielding plates (33) are provided with shielding holes (34) that cooperate with the sand discharge ports (32). The control panel (9) is provided with a sand-driving structure for controlling the sliding of the shielding plate (33).

5. The low-voltage power distribution cabinet according to claim 4, characterized in that, The sand discharge drive structure includes a trapezoidal driven block (35) fixedly connected to one end of the shielding plate (33), and the control plate (9) is provided with a connecting drive block (36) that cooperates with the trapezoidal driven block (35). A shielding push spring (37) is provided between the shielding plate (33) and the sandbox (31).

6. The low-voltage power distribution cabinet according to claim 3, characterized in that, The rotating shafts on both sides of the mounting groove (2) are located slightly below the center of the mounting groove (2).

7. The low-voltage power distribution cabinet according to claim 3, characterized in that, The cross-section of the sandbox (31) is set as a right trapezoid.

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