High-voltage cable branch box for electric power

Abstract

The utility model relates to the technical field of power distribution equipment, and discloses a high-voltage cable branch box for electric power, comprising a branch box, the bottom of which is provided with a plurality of threading holes for cables to pass through; the blocking mechanism comprises two groups of breaking and cutting assemblies and a linear driving assembly, the two groups of breaking and cutting assemblies are slidably connected to the bottom of the distribution box, and the linear driving assembly is used for adjusting the distance between the two groups of breaking and cutting assemblies; the cutting assembly comprises a translation frame and a plurality of semicircular cutters fixedly connected to the translation frame, and the translation frame is slidably connected to the inner wall of the distribution box; according to the utility model, when the temperature in the box body is detected to exceed a fire judgment threshold value, the cable can be cut off through the blocking mechanism, so that the cable is divided into two parts at the threading hole to prevent flame from spreading to the cable outside the box body, and the cable outside the box body is stably clamped through the expansion type clamping mechanism, so that the flame is prevented from spreading to the cable outside the box body. The cable which is not powered off in time is prevented from freely falling and touching outside people or objects by mistake.

Description

TECHNICAL FIELD

[0001] The utility model relates to power distribution equipment technical field more specifically, it relates to a high voltage cable branch box for electric power. BACKGROUND

[0002] High voltage cable branch box is in power system 10kV distribution network cable engineering, and a large number of branches in the original distribution network overhead line are replaced by an economical, reliable, convenient maintenance wiring mode, and the emergence of cable branch box completely solves this problem, and the line failure rate is greatly reduced by its full insulation, full sealing characteristics, and becomes the preferred equipment of distribution network cable engineering. Its simple, convenient, flexible connection combination mode makes it can replace ring network cabinet in some occasions, and can be buried underground or immersed in water in necessary occasions, saves the investment of equipment and cable, improves the reliability of power supply, and is widely used in commercial centers, industrial parks and urban dense areas.

[0003] At present, the safety performance of branch box in commercial centers, industrial parks and urban dense areas is the most important, because the box body has many heat dissipation holes, the internal electrical devices are affected by many external factors, such as humidity, temperature and the like, these influence factors may induce short circuit of the line in the branch box in the long-term use process of the branch box, and the combustion may occur in serious cases, so that there is a great safety hazard. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high voltage cable branch box for electric power.

[0005] The utility model provides a high voltage cable branch box for electric power, which comprises:

[0006] The tap box is provided with a plurality of threading holes for cables to pass in at the bottom.

[0007] The blocking mechanism comprises two groups of cutting components and a linear driving component slidingly connected at the bottom of the tap box, the two groups of cutting components are symmetrically arranged on the two sides of the threading holes, and the linear driving component is used to adjust the distance between the two groups of cutting components.

[0008] The cutting component comprises a translation frame, a plurality of semicircular cutters fixedly connected to the translation frame, the translation frame is slidingly connected to the inner wall of the tap box, and the plurality of semicircular cutters are respectively arranged in correspondence with the corresponding threading holes.

[0009] As a further optimization scheme of the utility model, the radius of the semicircular cutter is greater than the radius of the threading hole, and the bottom of the semicircular cutter is provided with an insulating coating.

[0010] As a further optimization scheme of the utility model, the linear drive assembly includes two symmetrical motors, a double screw rod fixedly connected to the output shaft end of the motor, two translation frames are in threaded connection with the double screw rod, two groups of threads with opposite rotation directions are arranged on the double screw rod, and the two translation frames are respectively located at the corresponding thread portions.

[0011] As a further optimization scheme of the utility model, the bottom of the distribution box is further connected with an expansion clamping mechanism, the expansion clamping mechanism includes a plurality of expansion assemblies and a plurality of pump air assemblies, the plurality of expansion assemblies are respectively connected at the corresponding threading holes, the expansion assemblies are used for clamping the cables outside the distribution box, and the pump air assemblies are used for adjusting the internal air pressure of the expansion assemblies.

[0012] As a further optimization scheme of the utility model, the expansion assembly includes a fixed ring frame, and a ring-shaped capsule connected to the inner circular surface of the fixed ring frame, the fixed ring frame, the ring-shaped capsule and the threading hole are coaxially arranged, the fixed ring frame is fixedly connected to the distribution box, a gas release valve is arranged on the fixed ring frame, and the gas release valve is in communication with the internal space of the ring-shaped capsule.

[0013] As a further optimization scheme of the utility model, the pump air assembly includes an air pump, a main pipeline connected to the output end of the air pump, and a shunt pipe connected to the output end of the main pipeline, the output end of the shunt pipe is in communication with the corresponding ring-shaped capsule, a one-way valve is arranged on the main pipeline, and the air pump is connected to the distribution box.

[0014] As a further optimization scheme of the utility model, the distribution box includes a box body, a plurality of heat dissipation holes arranged on the box body, a plurality of rain covers connected to the outer wall of the box body, two symmetrical wing doors hingedly connected to the box body, and a lock body connected to the wing door, the plurality of threading holes are arranged at the bottom of the box body, and the plurality of rain covers are correspondingly arranged with the plurality of heat dissipation holes.

[0015] As a further optimization scheme of the utility model, the inner wall of the box body is connected with a grounding row, a sleeve mounting frame and a cable limiting frame, a plurality of cable sleeves are detachably connected to the sleeve mounting frame, a plurality of cable clamps are detachably connected to the cable limiting frame, and the cable limiting frame and the cable clamp are located directly above the threading hole.

[0016] The utility model discloses the beneficial effect lies in: the utility model can be when detecting that the temperature in the box body exceeds the fire judgment threshold value, can cut off the cable through the barrier mechanism, makes the cable at threading hole two halves, prevents the flame from spreading to the cable outside the box body, and through the expansion clamping mechanism, the cable outside the box body is stably clamped, so as to prevent the cable from falling freely and touching the outside person or object in time. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the whole structure schematic view of the utility model;

[0018] Figure 2 is the internal structure schematic view of the box of the utility model;

[0019] Figure 3 is the cooperation view of the blocking mechanism and the box of the utility model;

[0020] Figure 4 is the cooperation view of the inflation type clamping mechanism and the box of the utility model;

[0021] Figure 5 is the cooperation view of the inflation assembly and the air pumping assembly of the utility model;

[0022] Figure 6 is the cooperation view of the inflation type clamping mechanism and the box of the utility model; Figure 5 is the enlarged view of A in the utility model.

[0023] In the figure: 101, box; 102, rain cover; 103, heat dissipation hole; 104, wing door; 105, lock body; 106, grounding row; 107, sleeve mounting frame; 108, cable sleeve; 109, cable limiting frame; 110, cable hoop; 111, threading hole; 2, blocking mechanism; 201, translation frame; 202, semicircular cutter; 203, motor; 204, bidirectional screw rod; 3, inflation type clamping mechanism; 301, air pump; 302, fixed ring frame; 303, annular capsule; 304, shunt pipe; 305, main pipeline. DETAILED DESCRIPTION

[0024] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that these implementations are only examples of the subject matter described herein and that components, features, and / or functions described in connection with one implementation can be interchanged with, combined with, or implemented independently of, components, features, and / or functions described in connection with another implementation.

[0025] As shown in Figures 1 to 6 , a high-voltage cable branch box for electric power includes:

[0026] The tap box includes a box 101, a plurality of heat dissipation holes 103 provided on the box 101, a plurality of rain covers 102 connected to the outer wall of the box 101, two symmetrical wing doors 104 hingedly connected to the box 101, a lock body 105 connected to the wing door 104, a plurality of threading holes 111 provided at the bottom of the box 101 for the cables to pass through, and the plurality of rain covers 102 are correspondingly arranged with the plurality of heat dissipation holes 103.

[0027] The inner wall of the box body 101 is connected with a grounding row 106, a sleeve mounting rack 107 and a cable limiting rack 109, the sleeve mounting rack 107 is detachably connected with a plurality of cable sleeves 108, the cable limiting rack 109 is detachably connected with a plurality of cable clamps 110, and the cable limiting rack 109 and the cable clamps 110 are located directly above the threading holes 111;

[0028] The blocking mechanism 2 comprises two groups of cutting components and a linear driving component, the two groups of cutting components are symmetrically arranged on the two sides of the threading holes 111, and the linear driving component is used for adjusting the distance between the two groups of cutting components;

[0029] The cutting component comprises a translation rack 201 and a plurality of semicircular cutters 202 fixedly connected to the translation rack 201, the translation rack 201 is slidably connected to the inner wall of the distribution box, and the plurality of semicircular cutters 202 are correspondingly arranged at the threading holes 111.

[0030] It should be noted that the temperature sensor arranged in the box body 101 can obtain the internal temperature data of the box body 101 in real time, if the temperature data reaches or exceeds the preset internal temperature data at the time of fire, in order to prevent the flame from spreading to the cables outside the box body 101, at this time, the two groups of cutting components can be driven to approach each other by the linear driving component, that is, the two semicircular cutters 202 corresponding to each threading hole 111 approach each other, and under the action of the driving force, the cables passing through the threading holes 111 are cut off, after the cables are cut off, the two semicircular cutters 202 are in close contact and completely cover the threading holes 111, so that the flame can be effectively prevented from spreading to the cables outside the box body 101 from the threading holes 111.

[0031] In an optional embodiment of the utility model, as shown in Figure 3 The radius of the semicircular cutter 202 is greater than the radius of the threading hole 111, and the bottom of the semicircular cutter 202 is provided with an insulating coating.

[0032] It should be noted that, as described above, when the two semicircular cutters 202 contact each other, the corresponding threading hole 111 can be tightly sealed, and the insulating coating arranged at the bottom of the semicircular cutter 202 can effectively prevent the cable that is not powered off or abnormally powered off from guiding the current to the entire box body 101 through the semicircular cutter 202 during the cutting process of the cable, and the safety performance can be effectively improved.

[0033] In an optional embodiment of the utility model, as shown in Figure 3As shown, the linear drive assembly comprises two symmetrical motors 203, a bidirectional screw rod 204 fixedly connected to the output shaft end of the motor 203, and two translation frames 201 threadedly connected to the bidirectional screw rod 204, wherein the bidirectional screw rod 204 is provided with two groups of threads with opposite rotation directions, and the two translation frames 201 are respectively located at the corresponding thread portions.

[0034] It should be noted that, as described above, when the two semicircular cutters 202 are driven to approach each other by the linear drive assembly, the bidirectional screw rod 204 is driven to rotate by the motor 203, and because the threads of the thread portions provided on the bidirectional screw rod 204 have opposite rotation directions, the two translation frames 201 can be driven to approach each other when the bidirectional screw rod 204 rotates, and the semicircular cutters 202 can be driven to approach each other when the translation frames 201 approach each other, thereby realizing the cutting process of the cable.

[0035] In an optional embodiment of the utility model, as shown in Figures 3 to 6 The bottom of the distribution box is further connected with an expansion clamping mechanism 3, the expansion clamping mechanism 3 comprises a plurality of expansion assemblies and a plurality of pump assemblies, the plurality of expansion assemblies are respectively connected at corresponding threading holes 111, the expansion assemblies are used for clamping the cable outside the distribution box, and the pump assemblies are used for adjusting the internal air pressure of the expansion assemblies.

[0036] The expansion assembly comprises a fixed ring frame 302 and a ring-shaped capsule 303 connected to the inner circular surface of the fixed ring frame 302, the fixed ring frame 302, the ring-shaped capsule 303 and the threading hole 111 are coaxially arranged, the fixed ring frame 302 is fixedly connected to the distribution box, the fixed ring frame 302 is provided with a deflation valve, and the deflation valve is in communication with the internal space of the ring-shaped capsule 303.

[0037] The pump assembly comprises an air pump 301, a main pipeline 305 connected to the output end of the air pump 301 and a shunt pipe 304 connected to the output end of the main pipeline 305, the output end of the shunt pipe 304 is in communication with the corresponding ring-shaped capsule 303, the main pipeline 305 is provided with a one-way valve, and the air pump 301 is connected to the distribution box.

[0038] It should be noted that, as described above, in order to prevent the cut cable from directly free-falling and contacting pedestrians or objects in the external environment, the air can be pumped into the main pipeline 305 by the air pump 301 and then enter the shunt pipe 304 through the one-way valve within a set time period before the cable is cut, the air entering the shunt pipe 304 can be shunted to the corresponding ring-shaped capsule 303, so that the ring-shaped capsule 303 is continuously inflated and bulged until the ring-shaped capsule 303 contacts the cable and exerts a set hoop limiting force on the cable, so that the cable can be stably clamped, and when the cable is removed, the gas in the ring-shaped capsule 303 can be discharged through the deflation valve, so that the cable is no longer limited.

[0039] The above describes the embodiments, but the embodiments are not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative and not restrictive, and those skilled in the art can make many forms under the inspiration of the embodiments, and all belong to the protection of the embodiments.

Claims

1. A high-voltage cable branch box for electric power, characterized in that The utility model relates to a kind of cable distribution box, including: The bottom of the distribution box is provided with a plurality of wire holes (111) for power cable to pass through; A blocking mechanism (2) is connected to the bottom of the distribution box, which includes two sets of cutting components and a linear drive component. The cutting component includes a translation frame (201), a plurality of semicircular cutters (202) fixedly connected to the translation frame (201), the translation frame (201) is slidingly connected to the inner wall of the distribution box, and the plurality of semicircular cutters (202) are respectively arranged corresponding to the corresponding wire holes (111). The bottom of the distribution box is also connected to an inflatable clamping mechanism (3), which includes a plurality of expansion components and a plurality of air pumping components.

2. A power high voltage cable branch box according to claim 1, characterized in that The radius of the semicircular cutter (202) is greater than the radius of the wire hole (111), and the bottom of the semicircular cutter (202) is provided with an insulating coating.

3. A power high voltage cable terminal according to claim 2, c h a r a c t e r i z e d in that The linear drive component includes two symmetrically distributed motors (203), a bidirectional screw (204) fixedly connected to the output shaft end of the motor (203), both translation frames (201) are threadedly connected to the bidirectional screw (204), and the bidirectional screw (204) is provided with two sets of threads with opposite directions.

4. A power high voltage cable branch box according to claim 3, characterized in that The expansion component includes a fixed ring frame (302) and a ring-shaped capsule (303) connected to the inner circular surface of the fixed ring frame (302).

5. A power high voltage cable terminal according to claim 4, characterised in that The pumping component includes an air pump (301), a main pipeline (305) connected to the output end of the air pump (301), and a shunt pipe (304) connected to the output end of the main pipeline (305).

6. A power high voltage cable terminal according to claim 5, c h a r a c t e r i z e d in that The distribution box includes a box body (101), a plurality of heat dissipation holes (103) arranged on the box body (101), a plurality of rain covers (102) connected to the outer wall of the box body (101), two symmetrically hinged wing doors (104) on the box body (101), and a lock body (105) connected to the wing door (104).

7. A power high voltage cable terminal according to claim 6, c h a r a c t e r i z e d in that The inner wall of the box (101) is connected with a grounding row (106), a sleeve mounting rack (107) and a cable limiting rack (109), the sleeve mounting rack (107) is detachably connected with a plurality of cable sleeves (108), the cable limiting rack (109) is detachably connected with a plurality of cable hoops (110), and the cable limiting rack (109) and the cable hoop (110) are located directly above the threading hole (111).

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