Insulation protection device of low-voltage cable branch box

Abstract

The utility model relates to the technical field of insulation protection devices, discloses an insulation protection device of a low-voltage cable branch box, solves the problems that in some areas without protective guards, after the protection device is easily collided by a vehicle, a shell is likely to be broken, and an internal insulation partition plate is likely to be displaced, and comprises a device box, the device box comprises a device shell, a carding device is arranged in the device shell, a protection door is installed on one side of the device shell through a hinge, four sets of connecting columns are fixedly installed on the inner side of the protection door, an anti-collision frame is fixedly installed among the four sets of connecting columns, and the four sets of connecting columns on the inner side of the protection door are matched with a limiting frame; the carding device is fixed, when the device box is collided, the collision force is buffered and absorbed through the connecting plates under the limitation of the first elastic pieces in the buffer plates, and meanwhile, the frame of the device box is protected through the anti-collision frames among the four sets of connecting columns.

Description

Technical Field

[0001] This utility model relates to the technical field of insulation protection devices, specifically an insulation protection device for a low-voltage cable branch box. Background Technology

[0002] Low-voltage cable distribution boxes connect the low-voltage outgoing terminals of low-voltage cabinets or transformer substations to the incoming terminals of the distribution boxes. The outgoing terminals of the low-voltage cable distribution boxes are then connected to various low-voltage users or low-voltage electrical equipment. They are suitable for residential areas, shopping malls, industries, enterprises, and other similar settings, offering a wide range of applications, high safety, and easy operation and maintenance. However, cable distribution boxes contain some exposed live parts, which operators may accidentally come into contact with during operation, potentially causing personal injury. Therefore, the safety of cable distribution boxes during use is relatively low.

[0003] A Chinese patent with publication number CN215990087U discloses an insulation protection system for a low-voltage cable branch box. During wiring and installation, workers can first move the cover plate and then directly pull out the corresponding mounting plate for wiring. This system is not only convenient and quick to use, but also has a reasonable overall structure. The insulating ceramic material used in the bottom and top slide rails ensures insulation between the mounting plates and the cable branch box housing. The pull rod also has excellent insulation due to the second insulating connecting block. In case of leakage, the power is contained only on the mounting plate, preventing conduction to the cable branch box housing and thus protecting against electric shock. The installation of a cooling fan enables heat dissipation of the cabinet and provides excellent dust prevention. The ventilation holes in the mounting plates facilitate convection within the cable branch box housing, further promoting heat dissipation.

[0004] Regarding the aforementioned technologies, in areas without guardrails, the protective devices are easily damaged by vehicle collisions, potentially leading to shell breakage and displacement of internal insulation panels. Furthermore, the numerous wiring inside the cable branch box makes internal maintenance and inspection quite troublesome, significantly impacting the device's practicality. Utility Model Content

[0005] The purpose of this utility model is to provide an insulation protection device for a low-voltage cable branch box. By using this device, the problems of the outer shell cracking and the internal insulation partition shifting caused by vehicle collisions in areas without guardrails are solved. At the same time, the internal maintenance and inspection of the cable branch box is quite troublesome due to the large number of wires inside.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an insulation protection device for a low-voltage cable branch box, comprising a device box, the device box including a device housing, a combing device disposed inside the device housing, a protective door hinged to one side of the device housing, four sets of connecting posts fixedly installed on the inner side of the protective door, an anti-collision frame fixedly installed between the four sets of connecting posts, the four sets of connecting posts matching the combing device, and a handle fixedly installed on the outer side of the protective door; the combing device includes two sets of buffer plates, one end of each of the two sets of buffer plates being fixedly connected to the interior of the device housing, a connecting plate slidably installed inside each of the two sets of buffer plates, and multiple sets of elastic elements fixedly installed at one end of each of the two sets of connecting plates. The end of the elastic element away from the connecting plate is fixedly connected to the buffer plate. Limit rods are fixedly installed on the other ends of both sets of connecting plates. Limit frames are installed at the upper and lower ends of both sets of limit rods. The limit frames match the connecting columns. After the wires and components inside the device box are installed through the combing device, the protective door is closed. The combing device is fixed by matching the four sets of connecting columns inside the protective door with the limit frames. When the device box is impacted, the impact force is buffered and absorbed by the connecting plate under the restriction of the elastic element in the buffer plate. At the same time, the anti-collision frame between the four sets of connecting columns protects the frame of the device box and prevents damage to the components inside the device box when it is impacted.

[0007] Preferably, a support shell is fixedly installed at the lower end of the device housing, and an air inlet is provided on the support shell. A dust filter is fixedly installed at the upper end of the support shell, and multiple sets of mounting slots are provided on the dust filter. A drying shell is fixedly installed inside the mounting slots. When the device box is working normally, the outside natural air is filtered and dried by the dust filter and the drying shell through the air inlet on the support shell, and then the working components inside the device box are cooled to prevent the components from being damaged due to excessive temperature.

[0008] Preferably, an insulating plate is fixedly installed inside the outer casing of the device, and a wiring hole is opened on one side of the outer casing. The underground wires are connected to the components installed on the insulating plate through the wiring hole after being combed by the combing device.

[0009] Preferably, a solar panel is fixedly installed on the upper end of the device housing, and a warning light is fixedly installed on one side of the solar panel. The solar panel powers the warning light to prevent vehicles from failing to notice the device box in time when there is no warning at night, thus preventing damage to the device box.

[0010] Preferably, each of the two sets of limiting rods has a sliding groove on its opposite side, and a slot is formed inside the sliding groove. A combing assembly is slidably arranged inside the sliding groove. Two sets of combing assemblies are fixedly installed between the two sets of limiting rods. The combing assembly includes a cable guide rod, which has multiple cable guide grooves inside. The upper end of the cable guide groove has a pressing groove. Multiple sets of U-shaped connecting blocks are fixedly installed at the upper end of the cable guide rod. A spiral pressing rod is threaded inside the U-shaped connecting block. The lower end of the spiral pressing rod matches the pressing groove and is rotatably connected to the upper end. Two sets of L-shaped grooves are formed inside the cable guide rod, and a pressing rod is slidably arranged inside the L-shaped groove. The pressure rod has an elastic element two fixedly installed at one end, and the other end of the elastic element two is fixedly connected to the cable guide rod. An elastic element three is fixedly installed at the lower end of the pressure rod, and a limiting block is fixedly installed at one end of the elastic element three. The limiting block matches the slot. The wires of the same component are passed through the same cable guide groove, and the wires in the cable guide groove are fixed by the spiral pressure rod. When it is necessary to adjust the height of the cable guide rod, the two sets of pressure rods are pressed inward, and the elastic element three connected to the lower end of the pressure rod is pulled back, so that the limiting block is disengaged from the slot and slides in the groove, thereby adjusting the height of the cable guide rod and keeping it in a suitable position to arrange the wires of each component.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The insulation protection device for a low-voltage cable branch box proposed by this utility model, after the wires and components inside the device box are installed by the combing device, the protective door is closed, and the combing device is fixed by matching the four sets of connecting posts on the inner side of the protective door with the limiting frame. When the device box is impacted, the impact force is buffered and absorbed by the connecting plate under the restriction of the elastic element in the buffer plate. At the same time, the anti-collision frame between the four sets of connecting posts protects the frame of the device box and prevents damage to the internal components of the device box when it is impacted. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the device box of this utility model; Figure 3 This is a schematic diagram of the outer shell structure of the device of this utility model; Figure 4 This is a schematic diagram of the side structure of the device box of this utility model; Figure 5 This is a schematic diagram of the planar structure of the support shell of this utility model; Figure 6 This is a three-dimensional structural diagram of the combing device of this utility model; Figure 7 This is a schematic diagram of the planar structure of the combing device of this utility model; Figure 8 This is a three-dimensional structural diagram of the combing component of this utility model; Figure 9 This is a schematic diagram of the planar structure of the combing component of this utility model.

[0013] In the diagram: 1. Device box; 11. Device housing; 111. Cable routing hole; 12. Combing device; 121. Buffer plate; 122. Connecting plate; 123. Elastic element one; 124. Limiting rod; 1241. Slide groove; 1242. Slot; 125. Limiting frame; 126. Combing assembly; 1261. Cable routing rod; 1262. Cable routing groove; 1263. U-shaped connecting block; 1264. Spiral extrusion rod; 1265. 1266. Extrusion groove; 1267. L-shaped groove; 1268. Elastic component two; 1269. Extrusion rod; 1260. Elastic component three; 13. Support shell; 131. Air inlet; 132. Dust filter; 133. Installation groove; 134. Drying shell; 14. Protective door; 141. Connecting column; 142. Anti-collision frame; 143. Handle; 15. Solar panel; 16. Warning light; 17. Insulating board; 18. Limiting block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0016] Combination Figure 1-2 , Figure 6-7An insulation protection device for a low-voltage cable branch box includes a device box 1. The device box 1 includes a device housing 11. A combing device 12 is disposed inside the device housing 11. A protective door 14 is hinged to one side of the device housing 11. Four sets of connecting posts 141 are fixedly installed on the inner side of the protective door 14. An anti-collision frame 142 is fixedly installed between the four sets of connecting posts 141. The four sets of connecting posts 141 are matched with the combing device 12. A handle 143 is fixedly installed on the outer side of the protective door 14. The combing device 12 includes two sets of buffer plates 121. One end of each set of buffer plates 121 is fixedly connected to the inside of the device housing 11. A connecting plate 122 is slidably installed inside each set of buffer plates 121. Multiple sets of elastic elements 123 are fixedly installed at one end of each set of connecting plates 122, with the elastic elements 123 being away from the connecting plates 12. One end of 2 is fixedly connected to the buffer plate 121, and the other ends of the two sets of connecting plates 122 are fixedly installed with limit rods 124. Limit frames 125 are installed at the upper and lower ends of the two sets of limit rods 124. The limit frames 125 are matched with the connecting posts 141. After the wires and components in the device box 1 are installed by the combing device 12, the protective door 14 is closed. The combing device 12 is fixed by matching the four sets of connecting posts 141 inside the protective door 14 with the limit frames 125. When the device box 1 is impacted, the impact force is buffered and absorbed by the connecting plate 122 under the restriction of the elastic element 123 in the buffer plate 121. At the same time, the anti-collision frame 142 between the four sets of connecting posts 141 protects the frame of the device box 1 and prevents the components inside the device box 1 from being damaged when the device box 1 is impacted.

[0017] Combination Figure 2 , Figure 4-5 A support shell 13 is fixedly installed at the lower end of the device housing 11. An air inlet 131 is provided on the support shell 13. A dust filter 132 is fixedly installed at the upper end of the support shell 13. Multiple sets of mounting slots 133 are provided on the dust filter 132. A drying shell 134 is fixedly installed inside the mounting slots 133. When the device housing 1 is working normally, the outside natural air is filtered and dried by the air inlet 131 on the support shell 13 through the dust filter 132 and the drying shell 134, which cools down the components working inside the device housing 1 and prevents the components from being damaged due to excessive temperature.

[0018] Combination Figures 2-3 An insulating plate 17 is fixedly installed inside the outer casing 11 of the device. A cable routing hole 111 is provided on one side of the outer casing 11. The underground wires are connected to the components installed on the insulating plate 17 through the cable routing hole 111 after being combed by the combing device 12.

[0019] Combination Figure 2A solar panel 15 is fixedly installed on the upper end of the device housing 11, and a warning light 16 is fixedly installed on one side of the solar panel 15. The warning light 16 is powered by the solar panel 15 to prevent the vehicle from failing to notice the device box 1 in time when there is no warning at night, which could cause damage to the device box 1.

[0020] Combination Figures 6-9 Each of the two sets of limiting rods 124 has a sliding groove 1241 on one side opposite to the other. A slot 1242 is formed inside the sliding groove 1241, and a combing assembly 126 is slidably disposed inside the sliding groove 1241. Two sets of combing assemblies 126 are fixedly installed between the two sets of limiting rods 124. Each combing assembly 126 includes a cable guide rod 1261. Multiple cable guide grooves 1262 are formed inside the cable guide rod 1261. A pressing groove 1265 is formed at the upper end of each cable guide groove 1262. Multiple sets of U-shaped connecting blocks 1263 are fixedly installed at the upper end of the cable guide rod 1261. A spiral pressing rod 1264 is threaded inside the U-shaped connecting block 1263. The lower end of the spiral pressing rod 1264 matches the pressing groove 1265 and is rotatably connected to the upper end. Two sets of L-shaped grooves 1266 are formed inside the cable guide rod 1261, and the L-shaped grooves 1266 are slidably disposed inside. There is a compression rod 1268, one end of which is fixedly installed with an elastic element 1267. One end of the elastic element 1267 is fixedly connected to the cable guide rod 1261. The lower end of the compression rod 1268 is fixedly installed with an elastic element 1269. One end of the elastic element 1269 is fixedly installed with a limiting block 18. The limiting block 18 matches the slot 1242. The wires of the same component are passed through the same cable guide 1262. The spiral compression rod 1264 fixes the wires in the cable guide 1262. When it is necessary to adjust the height of the cable guide rod 1261, the two sets of compression rods 1268 are pressed inward, and the elastic element 1269 connected to the lower end of the compression rod 1268 is pulled back, so that the limiting block 18 is disengaged from the slot 1242 and slides in the slide groove 1241, thereby adjusting the height of the cable guide rod 1261 and keeping it in a suitable position to arrange the wires of each component.

[0021] Working principle: When an external impact force is applied to the device box 1, the buffer plate 121, connecting plate 122 and elastic element 123 in the combing device 12 work together to buffer and absorb the impact force, preventing internal components from being damaged by collision. At the same time, its combing component 126 sorts and organizes the wires with the help of the wire groove 1262 on the wire rod 1261, and uses the spiral extrusion rod 1264 and the extrusion groove 1265 to fix the wires, ensuring that the wires are arranged in an orderly manner. After the protective door 14 is closed, its inner connecting column 141 matches and is fixed with the limiting frame 125 of the combing device 12, and the anti-collision frame 142 further enhances the protective effect. The air inlet 131 on the support shell 13 introduces natural air from the outside. After being filtered and dried by the dust filter 132 and the drying shell 134, the air cools down the components working inside the device box 1 to prevent damage caused by excessive temperature. The solar panel 15 collects solar energy to power the warning light 16, so that the vehicle can spot the device box 1 in time at night when there are no other warnings to prevent it from being damaged by collision. The insulating plate 17 provides a reliable insulating environment for the inside of the device box 1. The wiring hole 111 serves as a channel for connecting underground wires to the components on the insulating plate 17. After being combed by the combing device 12, the power transmission lines are connected and orderly integrated.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulation protection device for a low-voltage cable branch box, comprising a device box (1), characterized in that: The device box (1) includes a device housing (11), inside which a combing device (12) is installed. A protective door (14) is hinged on one side of the device housing (11). Four sets of connecting posts (141) are fixedly installed on the inner side of the protective door (14), and anti-collision frames (142) are fixedly installed between the four sets of connecting posts (141). The four sets of connecting posts (141) are matched with the combing device (12). A handle (143) is fixedly installed on the outer side of the protective door (14). The combing device (12) includes two sets of buffer plates (121). One end of each of the two sets of buffer plates (121) is fixedly connected to the inside of the outer shell (11). A connecting plate (122) is slidably installed inside each of the two sets of buffer plates (121). Multiple sets of elastic elements (123) are fixedly installed at one end of each of the two sets of connecting plates (122). The end of the elastic element (123) away from the connecting plate (122) is fixedly connected to the buffer plate (121). Limiting rods (124) are fixedly installed at the other end of each of the two sets of connecting plates (122). Limiting frames (125) are installed at both the upper and lower ends of each of the two sets of limiting rods (124). The limiting frames (125) are matched with the connecting column (141).

2. The insulation protection device for a low-voltage cable branch box according to claim 1, characterized in that: A support shell (13) is fixedly installed at the lower end of the outer shell (11) of the device. An air inlet (131) is provided on the support shell (13). A dust filter (132) is fixedly installed at the upper end of the support shell (13). Multiple sets of mounting slots (133) are provided on the dust filter (132). A drying shell (134) is fixedly installed inside the mounting slot (133).

3. The insulation protection device for a low-voltage cable branch box according to claim 2, characterized in that: An insulating plate (17) is fixedly installed inside the outer casing (11) of the device, and a wiring hole (111) is opened on one side of the outer casing (11).

4. The insulation protection device for a low-voltage cable branch box according to claim 3, characterized in that: A solar panel (15) is fixedly installed on the upper end of the outer casing (11) of the device, and a warning light (16) is fixedly installed on one side of the solar panel (15).

5. The insulation protection device for a low-voltage cable branch box according to claim 4, characterized in that: The two sets of limiting rods (124) each have a sliding groove (1241) on one side opposite to each other. The sliding groove (1241) has a slot (1242) inside it. The combing component (126) is slidably arranged inside the sliding groove (1241).

6. The insulation protection device for a low-voltage cable branch box according to claim 5, characterized in that: Two combing assemblies (126) are fixedly installed between the two sets of limiting rods (124). The combing assembly (126) includes a cable guide rod (1261). Multiple cable guide grooves (1262) are opened inside the cable guide rod (1261). An extrusion groove (1265) is opened at the upper end of the cable guide groove (1262). Multiple U-shaped connecting blocks (1263) are fixedly installed at the upper end of the cable guide rod (1261). A spiral extrusion rod (1264) is threaded inside the U-shaped connecting block (1263). The lower end of the spiral extrusion rod (1264) matches the extrusion groove (1265) and the spiral extrusion rod (1264) is threaded inside the U-shaped connecting block (1263). The lower end of 1264) is rotatably connected to the upper end. The inside of the cable rod (1261) is provided with two sets of L-shaped grooves (1266). The inside of the L-shaped groove (1266) is slidably provided with a pressing rod (1268). One end of the pressing rod (1268) is fixedly installed with an elastic element two (1267). One end of the elastic element two (1267) is fixedly connected to the cable rod (1261). The lower end of the pressing rod (1268) is fixedly installed with an elastic element three (1269). One end of the elastic element three (1269) is fixedly installed with a limiting block (18). The limiting block (18) matches the slot (1242).

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