A buried cable branch box for electric power engineering

Abstract

The present invention relates to the field of cable installation technology, and discloses an underground cable branch box for electric power engineering, including a box body, a branch terminal, a protective component, a stabilizing component and an auxiliary component. The box body is spliced ​​by an enclosure, an upper cover plate and a lower cover plate. A main line interface is provided on one side of the enclosure, and a plurality of branch interfaces are provided on the other side. A branch terminal is installed in the box body, and stabilizing side plates are fixed on both sides of the branch terminal along its length direction. A protective shell is installed on the outside of the branch terminal, and a stabilizing component flush with the front end of the pressure input interface and the branch interface is installed on the protective shell. The cable and the connected interface are supported by the stabilizing box, so as to avoid the problem of sagging and breaking of the cable connection. At the same time, two upper and lower elliptical rollers that squeeze each other on the cable are installed in the stabilizing component. When the cable is subjected to a pulling force, the elliptical roller rotates under the friction resistance between the elliptical roller and the cable surface to clamp the cable, so as to effectively prevent the cable from detaching.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, in particular to an underground cable branch box for electric power engineering. Background Art

[0002] The underground cable branch box is a device used in power systems, mainly used for cable tapping, distribution, protection and grounding. It is usually buried underground and widely used in urban power, industry, construction, transportation and other fields. The underground cable branch box has the characteristics of waterproof, dustproof, corrosion-resistant, and pressure-resistant, and can work stably in complex environments. It transmits the power of the main cable to different load areas through branches. The underground design allows the cable branch box to be concealedly installed underground, saving ground space and keeping the surrounding environment clean.

[0003] At present, during the laying of underground cables, when the front end of the cable is connected to the interface of the diverter, the cable itself is heavy and will fall, causing the connection to age and crack, which poses certain safety risks. After the cable is laid, it needs to be buried. Later, due to repeated trampling or natural conditions, the deformation of the ground will cause the cable part to be pulled, which can easily cause the cable connector to detach from the interface and the cable to break, resulting in certain defects. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an underground cable branch box for power engineering projects, which has the advantages of being able to provide protective support for cables and cable connections to avoid cracking and to avoid cable breakage caused by pulling due to ground deformation. It solves the problem that the cables themselves are heavy at the current stage, and when connected to the power supply interface, the connection is prone to falling, causing aging and cracking of the connection, and the cable is damaged by pulling due to ground deformation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an underground cable branch box for electric power engineering, comprising a box body, a branching terminal, a protective component, a stabilizing component and an auxiliary component. The box body is spliced ​​by a fence, an upper cover plate and a lower cover plate to realize an independently sealed box body, which provides protection for the internal components.

[0006] A branching terminal is installed in the box, and stable side plates are fixed on both sides of the branching terminal along its length direction. The branching terminal is used to distribute the electric energy of the voltage transmission cable to the connected voltage transmission cables in a branching manner.

[0007] A pressure transmission interface is provided on one side of the branch terminal, and several socket interfaces are provided on the other side. The pressure transmission interface is connected to a pressure transmission cable, and the socket interface is connected to a branch cable, so as to transmit electric energy to the branch terminal, distribute it to the branch cable through the branch terminal, and then supply power to the connected equipment through the branch cable.

[0008] A protection component is installed on the side of the branch terminal. The protection component includes a protection shell mounted on the side of the branch terminal. The protection shell is rotatably connected in the enclosure. The protection shell is used to provide protection for the branch terminal.

[0009] On both sides of the protective shell, retaining side plates are fixed along its length direction. The stabilizing side plates correspond to the retaining side plates and are fixed by screws to achieve the function of fixing the branching terminal in the protective shell.

[0010] Several stabilizing components are installed on the protective shell. The stabilizing components correspond to the pressure input interface and the tapping interface and are used to fasten the connected cables to prevent the cables from detaching from the corresponding interfaces.

[0011] The stabilizing component includes a stabilizing box installed on the protective shell. A support rod is provided on the stabilizing box. One end of the support rod is fixed on the protective shell to provide horizontal support for the cable and interface connection.

[0012] An auxiliary component for supporting the reserved portion of the cable is installed on the stabilizing box.

[0013] As a further improvement of the above solution, a docking port is provided on the upper cover plate, the docking port is communicated with the box body, and a door panel is rotatably connected in the docking port.

[0014] Through the above technical solution, when the door panel and the docking port are closed, the box body is sealed, and when the door panel is opened, the hardware inside the box body can be inspected and repaired.

[0015] As a further improvement of the above solution, a connecting button is fixed on the side of the protective shell, a connecting ring is movably sleeved on the side of the connecting button, a support frame is fixed at one end of the connecting ring, and a retaining plate is fixed in the enclosure, and the support frame is fixed on the retaining plate.

[0016] Through the above technical solution, the protective shell is installed in the box by fixing the support frame on the retaining plate, and the angle of the cable connection is adjusted by rotating the connecting button in the connecting ring.

[0017] As a further improvement of the above solution, a plurality of docking holes are opened on the side of the connecting button, a spring button is installed on one side of the connecting ring, and the output end of the spring button passes through the connecting ring and is inserted into the corresponding docking hole.

[0018] Through the above technical solution, according to the angle requirements of cable installation, the protective shell drives the connecting button to rotate, thereby achieving the function of fixing the adjusted angle position.

[0019] As a further improvement of the above solution, a set hole is opened in the stabilizing box.

[0020] Through the above technical solution, the pressure transmission cable and the branch cable pass through the set hole, which improves the stability of the connection between the cables and avoids cracking and damage.

[0021] As a further improvement of the above solution, a stabilizing plate is fixed in the stabilizing box, a rotating shaft is rotatably connected to the stabilizing plate, an elliptical roller is fixed on the rotating shaft, and the elliptical roller fits the corresponding pressure transmission cable or branch cable.

[0022] Through the above technical solution, the elliptical roller can generate friction resistance with the cable surface. When the cable is under tension, the rotation of the elliptical roller can clamp the cable.

[0023] As a further improvement of the above solution, a convex button is provided on the side of the stabilizing box, and the auxiliary component includes a connecting rod installed on the side of the stabilizing box, and one end of the connecting rod is rotatably connected to the convex button.

[0024] Through the above technical solution, the connecting rod swings around the axis of the convex button, and the function of lifting and releasing the redundant cable is achieved by swinging up and down.

[0025] As a further improvement of the above solution, one end of the connecting rod is rotatably connected to an auxiliary roller, and the pressure transmission cable and the branch cable are attached to the auxiliary roller.

[0026] Through the above technical solution, when the connecting rod moves upward or downward, the cable fits on the side of the auxiliary roller, and the auxiliary roller rotates in the direction of movement of the connecting rod, thereby reducing friction resistance.

[0027] As a further improvement of the above solution, a convex block is fixed to the side of the stabilizing box, an annular rod is fixed to the convex block, and the annular rod is movably sleeved on the connecting rod.

[0028] Through the above technical solution, a hole is opened on the side of the connecting rod, and the annular rod is movably sleeved in the hole, thereby improving the swing stability of the connecting rod.

[0029] As a further improvement of the above solution, a tension spring is movably sleeved on the side of the annular rod, and the tension spring fits between the connecting rod and the protrusion. At the same time, a limit ring is installed on the annular rod, and the limit ring fits on the side of the connecting rod.

[0030] Through the above technical solution, the tension spring is used to push the connecting rod upward, so that the connecting rod lifts the excess cable upward. At the same time, the swing angle of the connecting rod is limited by the limit ring to prevent the connecting rod from detaching from the annular rod.

[0031] Beneficial effects of the present invention:

[0032] 1. The underground cable branch box for power engineering is equipped with a protective shell on the outside of the branching terminal, and a stabilizing component flush with the front end of the pressure transmission interface and the socket interface is installed on the protective shell. The cable and the connected interface are supported by the stabilizing box to avoid the problem of cable sagging and breakage. At the same time, the upper and lower elliptical rollers installed in the stabilizing component squeeze the cable against each other. When the cable is subjected to pulling force, the elliptical roller rotates under the friction resistance between the elliptical roller and the cable surface to clamp the cable, thereby effectively preventing the cable from detaching.

[0033] 2. The underground cable branch box for power engineering has a connecting rod installed on the stabilizing box. The connecting rod swings upward to reserve cables for installation. When deformation occurs, the front end of the connecting rod tilts downward to output the reserved part of the cable, thereby effectively solving the problem of cable pulling and power failure caused by deformation caused by long-term cable burial. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall external structure of the device of the present invention;

[0035] Figure 2 It is a schematic diagram of the connection structure of the enclosure and the branch line assembly and each assembly of the present invention;

[0036] Figure 3 This is a front structural diagram of the branch line terminal of the present invention;

[0037] Figure 4 This is a rear view structural diagram of the branch line terminal of the present invention;

[0038] Figure 5 This is a schematic diagram of the connection structure between the branch terminal and the protection component of the present invention;

[0039] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0040] Figure 7 This is a schematic diagram of the partial structure of the connection button and the connection ring of the present invention;

[0041] Figure 8 It is a schematic diagram of the partial connection structure of the stabilizing component and the auxiliary component of the present invention;

[0042] Fig. 9 It is a schematic diagram of the connection structure of the elliptical roller and the cable of the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0044] 1. Box body; 101. Enclosure; 102. Upper cover; 103. Lower cover; 104. Docking port; 105. Door panel; 106. Main line port; 107. Branch port; 108. Retention plate;

[0045] 2. Branching terminal; 201. Voltage transmission interface; 202. Socket interface; 203. Stabilizing side plate; 204. Voltage transmission cable; 205. Branching cable;

[0046] 3. Protective assembly; 301. Protective shell; 302. Retaining side plate; 303. Connecting button; 304. Docking hole; 305. Connecting ring; 306. Spring button; 307. Support frame;

[0047] 4. Stable assembly; 401. Stable box; 4011. Support rod; 4012. Set hole; 402. Stable plate; 403. Rotating shaft; 404. Oval roller; 405. Convex button; 406. Torsion spring;

[0048] 5. Auxiliary components; 501. Connecting rod; 502. Auxiliary roller; 503. Bump; 504. Annular rod; 505. Tension spring; 506. Limiting ring. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1

[0051] See also Figure 1-Figure 9 As shown, the present embodiment proposes an underground cable branch box for electric power engineering, comprising a box body 1, a branch line terminal 2, a protective component 3, a stabilizing component 4 and an auxiliary component 5. The box body 1 is formed by splicing an enclosure 101, an upper cover plate 102 and a lower cover plate 103. A main line interface 106 is provided on one side of the enclosure 101, and a plurality of branch interfaces 107 are provided on the other side. The upper cover plate 102 is fixed on the top of the enclosure 101, and the lower cover plate 103 is fixed on the bottom of the enclosure 101, so as to realize an independently sealed box body 1, which is used to provide protection for the branch line terminal 2 and each component inside.

[0052] A branching terminal 2 is installed in the box 1. On both sides of the branching terminal 2, stabilizing side plates 203 are fixed along its length direction. The branching terminal 2 is used to distribute the electric energy of the voltage transmission cable to the connected voltage transmission cable 204 in a branching manner.

[0053] A pressure input interface 201 is provided on one side of the branch terminal 2, and a plurality of socket interfaces 202 are provided on the other side. A pressure input cable 204 is connected to the pressure input interface 201, and a branch cable 205 is connected to the socket interface 202. The pressure input cable 204 passes through the main line interface 106, and the branch cable 205 passes through the branch interface 107. One end of the pressure input cable 204 is connected to the main line interface 106, and the other end is connected to the power supply terminal, so as to transmit electric energy to the branch terminal 2. The electric energy is distributed to the branch cable 205 connected to the socket interface 202 through the branch terminal 2, and the connected equipment is powered by the branch cable 205.

[0054] A protection assembly 3 is installed on the side of the branch terminal 2. The protection assembly 3 includes a protection shell 301 sleeved on the side of the branch terminal 2. The protection shell 301 is rotatably connected in the enclosure 101. The protection shell 301 is used to provide protection for the branch terminal 2.

[0055] On both sides of the protective shell 301, retaining side plates 302 are fixed along its length direction. The stabilizing side plates 203 correspond to the retaining side plates 302 and are fixed by screws. When the branching terminal 2 is installed in the protective shell 301, the stabilizing side plates 203 can be aligned with the retaining side plates 302. Connecting holes are opened at corresponding positions on the stabilizing side plates 203 and the retaining side plates 302. The screws pass through the connecting holes and are threadedly connected with the nuts to achieve the purpose of fixing the branching terminal 2 in the protective shell 301.

[0056] A plurality of stabilizing components 4 are installed on the protective shell 301 . The stabilizing components 4 correspond to the pressure input interface 201 and the tapping interface 107 , and are used to fasten the connected cables to prevent the cables from being separated from the corresponding interfaces.

[0057] The stabilizing component 4 includes a stabilizing box 401 installed on the protective shell 301, and a support rod 4011 is provided on the stabilizing box 401. One end of the support rod 4011 is fixed on the protective shell 301. The support rod 4011 is used to align the stabilizing box 401 with the corresponding interface, thereby achieving a horizontal support effect on the connection between the cable and the interface.

[0058] An auxiliary component 5 for supporting the reserved portion of the cable is installed on the stabilizing box 401 .

[0059] The working principle of the underground cable branch box for power engineering proposed in this embodiment is: when in use, the front ends of the pressure transmission cable 204 and the branch cable 205 are passed through the main line interface 106 and the branch interface 107, and then the sides of the cables are attached to the corresponding auxiliary rollers 502, and the pressure transmission cable 204 and the branch cable 205 need to pass through the set holes 4012 opened in the corresponding position of the stabilizing box 401. Through the upper and lower two elliptical rollers 404 in the stabilizing box 401, under the action of the torsion spring 406, the inclined end of the elliptical roller 404 is attached to the side of the cable, so that the front end of the cable can remain horizontal and connected to the interface. When the ground is deformed by construction, the front end of the connecting rod 501 is pushed by the tension spring 505 to lift up and retract the excess cable into the box 1. When the cable is deformed and generates pulling force, the connecting rod 501 tilts downward to release the excess cable to avoid the effect of pulling the cable out of the interface.

[0060] Furthermore, a docking port 104 is provided on the upper cover plate 102 , and the docking port 104 is communicated with the inside of the box body 1 , and a door panel 105 is rotatably connected to the docking port 104 .

[0061] More specifically, when the door panel 105 and the docking port 104 are closed, the inside of the box body 1 is sealed, and when the door panel 105 is flipped open, it is convenient to inspect and repair the hardware inside the box body 1.

[0062] Furthermore, a connecting button 303 is fixed to the side of the protective shell 301, and a connecting ring 305 is movably sleeved on the side of the connecting button 303. A support frame 307 is fixed to one end of the connecting ring 305. At the same time, a retaining plate 108 is fixed in the enclosure 101, and the support frame 307 is fixed on the retaining plate 108.

[0063] More specifically, the support frame 307 is fixed on the fixing plate 108, so that the protective shell 301 and the branch terminal 2 installed inside are installed in the box body 1. At the same time, the branch terminal 2 can be rotated in the connecting ring 305 through the connecting button 303, so that the branch terminal 2 can be rotated to adjust the angle of the cable connection.

[0064] Furthermore, a plurality of docking holes 304 are provided on the side of the connection button 303 , a spring button 306 is installed on one side of the connection ring 305 , and an output end of the spring button 306 passes through the connection ring 305 and is plugged into the corresponding docking hole 304 .

[0065] More specifically, according to the angle requirement of the cable installation, the protective shell 301 is flipped, and the protective shell 301 drives the connecting button 303 to rotate. When adjusted to the appropriate angle, the spring button 306 is inserted into the docking hole 304 at the corresponding position to achieve the function of fixing the adjusted angle position.

[0066] Embodiment 2

[0067] See also Figure 5-Figure 8 As shown, the underground cable branch box for electric power engineering proposed in this embodiment is based on the first embodiment. In this embodiment, a set hole 4012 is opened in the stabilizing box 401.

[0068] More specifically, before the pressure transmission cable 204 and the branch cable 205 pass through the corresponding main line interface 106 and the branch interface 107, the pressure transmission cable 204 and the branch cable 205 need to first pass through the set hole 4012 so that the front end of the cable and the interface connection are in a horizontal state to avoid the cable at the connection point tilting downward, causing the interface to be detached or damaged.

[0069] Furthermore, a stabilizing plate 402 is fixed in the stabilizing box 401 , a rotating shaft 403 is rotatably connected to the stabilizing plate 402 , an elliptical roller 404 is fixed to the rotating shaft 403 , and the elliptical roller 404 fits the corresponding pressure transmission cable 204 or the branch cable 205 .

[0070] More specifically, stabilizing plates 402 are fixed on both sides of the stabilizing box 401, and both ends of the opposite surfaces of the stabilizing plates 402 are rotatably connected with elliptical rollers 404. The surface of the elliptical rollers 404 is rough, so that the elliptical rollers 404 can generate friction resistance with the surface of the cable. When the cable is subjected to tension, the elliptical rollers 404 rotate to clamp the cable, thereby preventing the front end connector of the cable from detaching from the corresponding interface.

[0071] Embodiment 3

[0072] See also Figure 8 As shown, the underground cable branch box for electric power engineering proposed in this embodiment, on the basis of the second embodiment, also includes that a convex button 405 is provided on the side of the stabilizing box 401, and the auxiliary component 5 includes a connecting rod 501 installed on the side of the stabilizing box 401, and one end of the connecting rod 501 is rotatably connected to the convex button 405.

[0073] More specifically, circular holes are provided at both ends of the connecting rod 501, and the circular hole at one end is rotatably connected to the convex button 405, so that the connecting rod 501 swings around the axis of the convex button 405. When it swings upward, it can lift up the excess cable. When the front end of the cable is pulled, the connecting rod 501 will move downward to release the excess cable.

[0074] Furthermore, one end of the connecting rod 501 is rotatably connected to an auxiliary roller 502 , and the voltage transmission cable 204 and the branch cable 205 are attached to the auxiliary roller 502 .

[0075] More specifically, round buttons are fixed at both ends of the auxiliary roller 502, and the round buttons are rotatably connected to the round holes at the other end of the connecting rod 501, so that when the connecting rod 501 moves upward or downward, the cable fits against the side of the auxiliary roller 502 and rotates with the moving direction of the connecting rod 501 to reduce friction resistance.

[0076] Furthermore, a protrusion 503 is fixed to the side of the stabilizing box 401 , and an annular rod 504 is fixed to the protrusion 503 . The annular rod 504 is movably sleeved on the connecting rod 501 .

[0077] More specifically, a hole is provided on the side of the connecting rod 501 , and the annular rod 504 is movably sleeved in the hole, thereby improving the swing stability of the connecting rod 501 .

[0078] Furthermore, a tension spring 505 is movably sleeved on the side of the annular rod 504 , and the tension spring 505 fits between the connecting rod 501 and the protrusion 503 . Meanwhile, a limit ring 506 is installed on the annular rod 504 , and the limit ring 506 fits on the side of the connecting rod 501 .

[0079] More specifically, the tension spring 505 is used to push the connecting rod 501 upward so that the connecting rod 501 lifts the excess cable upward. At the same time, the limiting ring 506 limits the swing angle of the connecting rod 501 to prevent the connecting rod 501 from swinging excessively under the push of the tension spring 505, causing the connecting rod 501 to break away from the annular rod 504.

[0080] It should be further explained that the limiting ring 506 is fixed to the annular rod 504 by means of screws, and the position where the limiting ring 506 is fixed is installed according to the actual angle of limiting the swing of the connecting rod 501 .

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underground cable branch box for electric power engineering, comprising a box body (1), a branching terminal (2), a protection component (3), a stabilizing component (4) and an auxiliary component (5), characterized in that: The box body (1) is formed by splicing a fence (101), an upper cover plate (102) and a lower cover plate (103); one side of the fence (101) is provided with a main line interface (106), and the other side is provided with a plurality of branch connection interfaces (107); A branching terminal (2) is installed in the box body (1), and stabilizing side plates (203) are fixed on both sides of the branching terminal (2) along its length direction; The branch line terminal (2) is provided with a pressure input interface (201) on one side and a plurality of socket interfaces (202) on the other side; the pressure input interface (201) is connected to a pressure input cable (204), and the socket interface (202) is connected to a branch cable (205); the pressure input cable (204) passes through the main line interface (106), and the branch cable (205) passes through the branch interface (107); A protective component (3) is installed on the side of the branch terminal (2), and the protective component (3) comprises a protective shell (301) sleeved on the side of the branch terminal (2); Retaining side plates (302) are fixed along the length direction of the two sides of the protective shell (301), and the stabilizing side plates (203) correspond to the retaining side plates (302); A plurality of stabilizing components (4) are installed on the protective shell (301), and the stabilizing components (4) correspond to the pressure input interface (201) and the tapping interface (107); The stabilizing component (4) comprises a stabilizing box (401) mounted on the protective shell (301), a support rod (4011) being provided on the stabilizing box (401), and one end of the support rod (4011) being fixed on the protective shell (301); An auxiliary component (5) for supporting the reserved portion of the cable is installed on the stabilizing box (401).

2. The underground cable branch box for electric power engineering according to claim 1, characterized in that: The upper cover plate (102) is provided with a docking port (104), the docking port (104) is in communication with the interior of the box body (1), and a door panel (105) is rotatably connected to the docking port (104).

3. The underground cable branch box for electric power engineering according to claim 1, characterized in that: A connecting button (303) is fixed to the side of the protective shell (301), a connecting ring (305) is movably sleeved on the side of the connecting button (303), a supporting frame (307) is fixed to one end of the connecting ring (305), and a retaining plate (108) is fixed inside the enclosure (101), and the supporting frame (307) is fixed on the retaining plate (108).

4. The underground cable branch box for electric power engineering according to claim 3 is characterized in that: A plurality of docking holes (304) are provided on the side of the connection button (303), a spring button (306) is installed on one side of the connection ring (305), and an output end of the spring button (306) passes through the connection ring (305) and is plugged into the corresponding docking hole (304).

5. The underground cable branch box for electric power engineering according to claim 1, characterized in that: The stabilizing box (401) is provided with a fitting hole (4012).

6. An underground cable branch box for electric power engineering according to claim 5, characterized in that: A stabilizing plate (402) is fixed in the stabilizing box (401), a rotating shaft (403) is rotatably connected to the stabilizing plate (402), an elliptical roller (404) is fixed to the rotating shaft (403), and the elliptical roller (404) is attached to the corresponding pressure transmission cable (204) or the branch cable (205).

7. The underground cable branch box for electric power engineering according to claim 6, characterized in that: The side of the stabilizing box (401) is provided with a convex button (405), and the auxiliary component (5) comprises a connecting rod (501) installed on the side of the stabilizing box (401), and one end of the connecting rod (501) is rotatably connected to the convex button (405).

8. The underground cable branch box for electric power engineering according to claim 7, characterized in that: One end of the connecting rod (501) is rotatably connected to an auxiliary roller (502), and the pressure transmission cable (204) and the branch cable (205) are attached to the auxiliary roller (502).

9. The underground cable branch box for electric power engineering according to claim 7, characterized in that: A convex block (503) is fixed on the side of the stabilizing box (401), an annular rod (504) is fixed on the convex block (503), and the annular rod (504) is movably sleeved on the connecting rod (501).

10. The underground cable branch box for electric power engineering according to claim 9, characterized in that: A tension spring (505) is movably sleeved on the side of the annular rod (504), and the tension spring (505) fits between the connecting rod (501) and the protrusion (503). At the same time, a limit ring (506) is installed on the annular rod (504), and the limit ring (506) fits on the side of the connecting rod (501).

Images