A branch box mounting structure for a power grid

Abstract

The application is suitable for the technical field of power grid branch box installation, and provides a branch box installation structure for power grid, which comprises a fixed plate and further comprises: a main plate arranged on one side of the fixed plate, two ends of the main plate are respectively fixed with a side plate, the side plate is further fixedly connected with the fixed plate, and two mounting racks are slidably arranged on the main plate; a support adjusting assembly for supporting the mounting racks and controlling the two mounting racks to synchronously approach or move away from each other; a first rotary disc and a second rotary disc rotatably arranged on the mounting racks, first and second ring gears of the first and second rotary discs are in meshing connection, and first and second fixed supports are further oppositely arranged on the upper sides of the first and second rotary discs; and a transmission assembly for simultaneously driving the first rotary disc or the second rotary disc on the two mounting racks to reversely rotate. The application can quickly and adaptively clamp and fix the branch box, and significantly improves the installation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of power grid branch box installation technology, and particularly relates to a power grid branch box installation structure. Background Technology

[0002] Branch boxes are generally used as cable branches. The main function of a branch box is to split or transfer cables, primarily serving as a cable splitting and transfer function.

[0003] Existing mounting brackets for cable distribution boxes typically place the box on a support and then use multiple strips and bolts for final fixation. This method is cumbersome and inefficient, and each set of mounting fixtures can only be used for one or a few types of distribution boxes, which limits its functionality and requires improvement.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a branch box installation structure for power grids to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a branch box installation structure for power grids, which aims to solve the problem that existing fixing methods are cumbersome and inconvenient, affecting installation efficiency.

[0006] This invention is implemented as follows: a branch box installation structure for a power grid includes a fixed plate and a main board, which is disposed on one side of the fixed plate. A side plate is fixed to each end of the main board, and the side plates are also fixedly connected to the fixed plate. Two mounting brackets are slidably mounted on the main board. A support and adjustment assembly is mounted on the side plate and connected to both mounting brackets. The support and adjustment assembly is used to support the mounting brackets and control the two mounting brackets to move closer or further apart synchronously. A first turntable and a second turntable are rotatably mounted on the mounting brackets. The outer sides of the two turntables are respectively provided with a first gear ring and a second gear ring, which are meshed together. The upper sides of the first and second turntables are also provided with a first fixed support and a second fixed support, which are connected by a guide assembly. A transmission assembly is also provided on the side plate. The transmission assembly is connected to the first or second turntable on the two mounting brackets. The transmission assembly is used to drive the first or second turntable on the two mounting brackets to rotate in opposite directions at the same time, so that the first fixed support and the second fixed support move closer to each other and clamp and fix the branch box body.

[0007] In a further technical solution, the motherboard is set perpendicular to the fixing plate, and the fixing plate is also provided with multiple fixing holes; the mounting bracket and the motherboard are connected in an anti-detachment sliding connection.

[0008] A further technical solution includes a first fixing bolt, a first knob, and a positive and negative threaded shaft. The mounting bracket has a threaded hole, through which the positive and negative threaded shaft passes and is threadedly connected to the threaded hole of the mounting bracket. Both ends of the positive and negative threaded shaft are also rotatably connected to the side plate. A first knob is fixedly provided at one end of the positive and negative threaded shaft. One of the side plates is also provided with a first fixing bolt for fixing the positive and negative threaded shaft. When the positive and negative threaded shaft rotates, the two mounting brackets move closer or further apart synchronously.

[0009] A further technical solution is provided, wherein a rotating shaft is fixedly installed on the lower center of both the first and second turntables, and the rotating shaft is rotatably connected to the mounting bracket; the transmission assembly includes a second knob, a second fixing bolt, a transmission shaft, a long gear, and an end face gear, and an end face gear is also provided on the lower side of the first or second turntable, the end face gear is fixedly connected to the lower end of the rotating shaft, and a transmission shaft is also provided on the lower side of the end face gear, a long gear that meshes with both end face gears is installed and fixed on the transmission shaft, both ends of the transmission shaft are rotatably connected to the side plate, a second knob is installed and fixed on one end of the transmission shaft, and a second fixing bolt for fixing the transmission shaft is also provided on one of the side plates.

[0010] In a further technical solution, the long gear is parallel to the positive and negative thread shafts, and the central axis of the long gear passes through the central axes of both end face gears, and the long gear meshes with the side of the two end face gears that are close to each other.

[0011] In a further technical solution, a support shaft is rotatably mounted on the lower side of both the first and second fixed supports. Movable cavities are respectively opened on the first and second turntables corresponding to the first and second fixed supports, with the support shaft extending into the movable cavity. The top of the first and second turntables also has a movable opening for the support shaft's movement, which communicates with the movable cavity. The upper and lower parts of the movable cavity are respectively provided with a first guide plate and a second guide plate fixedly connected to the support shaft. The first guide plate is also slidably connected to the top of the movable cavity, and the second guide plate is also slidably connected to the bottom of the movable cavity. Multiple elastic elements are circumferentially distributed in the middle of the movable cavity. The outer ends of the elastic elements are fixedly connected to the sidewall of the movable cavity, and the inner ends of the elastic elements are fixedly connected to the support shaft.

[0012] In a further technical solution, the movable opening is circular; both the first guide disk and the second guide disk are disc-shaped structures, and the diameters of the first guide disk and the second guide disk are smaller than the diameter of the movable cavity; the elastic element is an elastic rope or a spring.

[0013] In a further technical solution, the first fixed support and the second fixed support have the same structure. Both the first fixed support and the second fixed support include a rectangular plate. The plate is rotatably mounted on the upper end of the support shaft. An L-shaped plate is integrally formed on the upper side of the plate. The L-shaped plates of the first fixed support and the second fixed support arranged on the same mounting frame are arranged opposite to each other. The L-shaped plates of the two first fixed supports and the two second fixed supports are used to clamp and fix the bottom corners of the branch box body.

[0014] In a further technical solution, the guide assembly includes a first outer cylinder, an inner rod, and a second outer cylinder. The first outer cylinder and the second outer cylinder are respectively fixed to the outer side of the L-shaped plates of the first fixed support and the second fixed support arranged on the same mounting bracket. An inner rod is provided between the first outer cylinder and the second outer cylinder, and the inner rod is slidably connected to both the first outer cylinder and the second outer cylinder. Several ball bearings are provided on the upper side of the flat plate of the first fixed support and the second fixed support, as well as on the side of the L-shaped plate near the branch box body.

[0015] In a further technical solution, a disc-shaped support plate is provided at the middle position between the two first fixed supports and the two second fixed supports. Several support balls are installed on the support plate, and the support plate is also connected and fixed to the main board through a support frame.

[0016] This invention provides a branch box installation structure for power grids. By limiting the adjustable distance between two mounting brackets, it can adapt to the installation and fixing needs of branch box bodies of different widths. Specifically, the adjustment is achieved by controlling the two mounting brackets to move closer or further apart synchronously through a support adjustment component. The first and second gear rings are meshed and connected, and the first and second fixed supports are connected through a guide component. When the transmission component simultaneously drives the first or second turntable on the two mounting brackets to rotate in opposite directions, the first and second fixed supports can move closer to each other and clamp and fix the branch box body, thus achieving rapid clamping and fixing of the branch box body and significantly improving installation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation structure of the power grid branch box provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0019] Figure 3 This is a top view of the installation structure of the power grid branch box provided in an embodiment of the present invention;

[0020] Figure 4 This is a bottom view of the installation structure of the power grid branch box provided in an embodiment of the present invention;

[0021] Figure 5 This is a front view schematic diagram of the power grid branch box installation structure provided in an embodiment of the present invention;

[0022] Figure 6 for Figure 5 Enlarged cross-sectional view of section A.

[0023] In the diagram: 1-Branch box body, 2-First fixed support, 3-Fixing plate, 4-First turntable, 5-First gear ring, 6-Support ball, 7-Support plate, 8-Support frame, 9-First outer cylinder, 10-Fixing hole, 11-Side plate, 12-Inner rod, 13-First fixing bolt, 14-First knob, 15-Second outer cylinder, 16-Second knob, 17-Second fixing bolt, 18-Drive shaft, 19-Mounting bracket, 20-Long gear, 21-Forward and reverse threaded shaft, 22-End face gear, 23-Second gear ring, 24-Second turntable, 25-Second fixed support, 26-Main board, 27-Rotating shaft, 28-Support shaft, 29-Moving port, 30-Moving cavity, 31-Elastic element, 32-First guide plate, 33-Second guide plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] like Figure 1-5 As shown, an embodiment of the present invention provides a branch box installation structure for a power grid, including a fixing plate 3, and further comprising:

[0027] Main board 26, the main board 26 is disposed on one side of the fixing plate 3, and a side plate 11 is fixed at each end of the main board 26. The side plate 11 is also fixedly connected to the fixing plate 3. Two mounting brackets 19 are slidably disposed on the main board 26.

[0028] A support adjustment assembly is installed on the side plate 11. The support adjustment assembly is connected to both mounting brackets 19. The support adjustment assembly is used to support the mounting brackets 19 and control the two mounting brackets 19 to move closer or further away synchronously.

[0029] The first turntable 4 and the second turntable 24 are rotatably mounted on the mounting bracket 19. The outer sides of the first turntable 4 and the second turntable 24 are respectively provided with a first gear ring 5 and a second gear ring 23, and the first gear ring 5 and the second gear ring 23 are meshed together. The upper sides of the first turntable 4 and the second turntable 24 are also respectively mounted with a first fixed support 2 and a second fixed support 25. The first fixed support 2 and the second fixed support 25 are also connected by a guide component.

[0030] A transmission assembly is also installed on the side plate 11. The transmission assembly is connected to the first turntable 4 or the second turntable 24 on the two mounting brackets 19. The transmission assembly is used to drive the first turntable 4 or the second turntable 24 on the two mounting brackets 19 to rotate in opposite directions at the same time, so that the first fixed support 2 and the second fixed support 25 move closer to each other and clamp and fix the branch box body 1.

[0031] In this embodiment of the invention, by limiting the distance between the two mounting brackets 19 to be adjustable, it can adapt to the installation and fixing needs of branch box bodies 1 of different sizes. That is, by controlling the two mounting brackets 19 to move closer or further apart synchronously through the support adjustment component, the purpose of adjustment is achieved. The first gear ring 5 and the second gear ring 23 are meshed and connected, and the first fixed support 2 and the second fixed support 25 are connected through the guide component. When the transmission component drives the first turntable 4 or the second turntable 24 on the two mounting brackets 19 to rotate in opposite directions, the first fixed support 2 and the second fixed support 25 can move closer to each other and clamp and fix the branch box body 1, that is, to achieve rapid clamping and fixing of the branch box body 1, which significantly improves the installation efficiency.

[0032] like Figure 1-2 As shown, in a preferred embodiment of the present invention, the main board 26 is arranged perpendicular to the fixing plate 3, and the fixing plate 3 is also provided with a plurality of fixing holes 10, which facilitates fixing the fixing plate 3 to a wall or utility pole, without specific limitation.

[0033] The mounting bracket 19 and the motherboard 26 are connected in an anti-slip manner. This can be achieved by providing protruding ridges on both sides of the motherboard 26 and correspondingly providing grooves on both sides of the mounting bracket 19 that slide in connection with the protruding ridges. This improves the reliability of the movement of the mounting bracket 19.

[0034] The support adjustment assembly includes a first fixing bolt 13, a first knob 14, and a positive and negative threaded shaft 21. The mounting bracket 19 has a threaded hole through which the positive and negative threaded shaft 21 passes and is threadedly connected to the threaded hole of the mounting bracket 19. Both ends of the positive and negative threaded shaft 21 are also rotatably connected to the side plate 11. A first knob 14 is fixedly provided at one end of the positive and negative threaded shaft 21, which facilitates the rotation of the positive and negative threaded shaft 21. One of the side plates 11 is also provided with a first fixing bolt 13 for fixing the positive and negative threaded shaft 21. When the positive and negative threaded shaft 21 rotates, the two mounting brackets 19 move closer or further apart synchronously. After adjustment, the positive and negative threaded shaft 21 can be locked by the first fixing bolt 13, thereby ensuring that the mounting bracket 19 is in a stable state.

[0035] like Figure 1-5 As shown, in a preferred embodiment of the present invention, a rotating shaft 27 is fixedly installed on the lower center of both the first turntable 4 and the second turntable 24. The rotating shaft 27 is rotatably connected to the mounting bracket 19 to achieve the purpose of supporting the rotation of the first turntable 4 and the second turntable 24, and to ensure reliable meshing of the first gear ring 5 and the second gear ring 23.

[0036] The transmission assembly includes a second knob 16, a second fixing bolt 17, a transmission shaft 18, a long gear 20, and an end face gear 22. The lower side of the first turntable 4 or the second turntable 24 is also provided with an end face gear 22, which is fixedly connected to the lower end of the rotating shaft 27, so that the end face gear 22 meshes with the first turntable 4 or the second turntable 24 and rotates synchronously. The lower side of the end face gear 22 is also provided with a transmission shaft 18, on which a long gear 20 that meshes with both end face gears 22 is installed and fixed. Both ends of the transmission shaft 18 are also rotatably connected to the side plate 11. A second knob 16 is installed and fixed at one end of the transmission shaft 18, which can drive the transmission shaft 18 to rotate. One of the side plates 11 is also provided with a second fixing bolt 17 for fixing the transmission shaft 18.

[0037] In one embodiment, such as Figure 4 As shown, the long gear 20 is parallel to the positive and negative threaded shaft 21, and the central axis of the long gear 20 passes through the central axes of both end face gears 22. The long gear 20 meshes with the side of the two end face gears 22 that is close to each other, which facilitates the adjustment of the distance between the two end face gears 22 and maximizes the adjustment range. When the long gear 20 rotates, the two end face gears 22 rotate in opposite directions, thereby making the two first turntables 4 or the second turntables 24 rotate in opposite directions, ultimately achieving the desired effect. Figure 3The rotation direction shown allows the first fixed support 2 and the second fixed support 25 to move closer to each other. Furthermore, the purpose of providing the long gear 20 and the end face gear 22 is not only for transmission, but also to accommodate changes in the distance between the two mounting brackets 19. Within the adjustment range, it ensures that the long gear 20 is always meshed with the two end face gears 22, ensuring reliable transmission.

[0038] like Figure 1 , 5 As shown in Figure 6, in a preferred embodiment of the present invention, a support shaft 28 is rotatably mounted on the lower side of both the first fixed support 2 and the second fixed support 25. Movable cavities 30 are respectively opened on the first turntable 4 and the second turntable 24 corresponding to the first fixed support 2 and the second fixed support 25. The support shaft 28 extends into the movable cavity 30. The top of the first turntable 4 and the second turntable 24 is also provided with a movable opening 29 for the movement of the support shaft 28. The movable opening 29 is circular and communicates with the movable cavity 30. The upper and lower parts of the movable cavity 30 are respectively provided with a first guide plate 32 and a second guide plate 33 fixedly connected to the support shaft 28. The first guide plate 32 and the second guide plate 33 have a disc-shaped structure, and their diameters are smaller than the diameter of the movable cavity 30. The first guide plate 32 is also slidably connected to the top of the movable cavity 30. 3 is also slidably connected to the bottom of the movable cavity 30. The movable cavity 30 is also provided with multiple elastic elements 31 circumferentially distributed in the middle. The elastic elements 31 are preferably elastic ropes or springs. The outer end of the elastic element 31 is fixedly connected to the side wall of the movable cavity 30, and the inner end of the elastic element 31 is fixedly connected to the support shaft 28. The setting of the first guide plate 32 and the second guide plate 33 can ensure the stability of the movement of the support shaft 28. The elastic support of the support shaft 28 by the elastic element 31 can facilitate the elastic clamping and fixing of the branch box body 1 by the first fixed support 2 and the second fixed support 25. At the same time, when one side of the first fixed support 2 and the second fixed support 25 first abuts against the branch box body 1, the first turntable 4 and the second turntable 24 continue to rotate. By using the movement of the support shaft 28, the other side of the first fixed support 2 and the second fixed support 25 abuts against the branch box body 1, so as to achieve the purpose of overall fixation.

[0039] The first fixed support 2 and the second fixed support 25 have the same structure. Both the first fixed support 2 and the second fixed support 25 include a rectangular plate, which is rotatably mounted on the upper end of the support shaft 28. An L-shaped plate is integrally formed on the upper side of the plate. The L-shaped plates of the first fixed support 2 and the second fixed support 25 arranged on the same mounting bracket 19 are arranged opposite to each other. The L-shaped plates of the two first fixed supports 2 and the two second fixed supports 25 are used to clamp and fix the bottom corners of the branch box body 1, specifically as follows. Figure 1 The arrangement method is as described above, without any restrictions or elaborations.

[0040] The guiding assembly includes a first outer cylinder 9, an inner rod 12, and a second outer cylinder 15. The first outer cylinder 9 and the second outer cylinder 15 are respectively fixed to the outer side of the L-shaped plates of the first fixed support 2 and the second fixed support 25 arranged on the same mounting bracket 19. An inner rod 12 is provided between the first outer cylinder 9 and the second outer cylinder 15. The inner rod 12 is slidably connected to both the first outer cylinder 9 and the second outer cylinder 15. By limiting the first outer cylinder 9, the inner rod 12, and the second outer cylinder 15, it can be ensured that the first fixed support 2 and the second fixed support 25 are always in the direction of clamping the branch box body 1, that is, the direction of the first fixed support 2 and the second fixed support 25 is prevented from changing as the first turntable 4 and the second turntable 24 rotate, thereby improving reliability.

[0041] In one embodiment, in order to reduce the friction between the first fixed support 2 and the second fixed support 25 and the branch box body 1, a plurality of ball bearings (not shown) are provided on the upper side of the flat plate of the first fixed support 2 and the second fixed support 25 and on the side of the L-shaped plate near the branch box body 1, so as to improve the supporting and clamping effect of the first fixed support 2 and the second fixed support 25 on the branch box body 1.

[0042] like Figure 1 As shown in a preferred embodiment of the present invention, a disc-shaped support plate 7 is provided at the intermediate position between the two first fixed supports 2 and the two second fixed supports 25. A plurality of support balls 6 are mounted on the support plate 7. The support plate 7 is also connected and fixed to the main board 26 via a support frame 8. The size of the support plate 7 can be arranged accordingly to avoid contact between the first gear ring 5 and the second gear ring 23 and the support plate 7. The arrangement of the support plate 7 can provide auxiliary support for the branch box body 1, facilitating the adjustment of the first fixed supports 2 and the second fixed supports 25 and the clamping and fixing of the branch box body 1, ultimately achieving overall fixation of the branch box body 1. Preferably, the upper surface of the support balls 6 is flush with the upper surface of the flat plates of the first fixed supports 2 and the second fixed supports 25. If the balls are mounted on the flat plates, the upper surface of the support balls 6 is flush with the upper surface of the balls, which will not be elaborated further.

[0043] The above embodiments of the present invention provide a branch box installation structure for power grids. In application, the fixing plate 3 is first fixed in a suitable position. According to the model and width of the branch box body 1, the distance between the two mounting brackets 19 is adjusted by rotating the first knob 14, thereby adjusting the distance between the first fixed support 2 and the second fixed support 25 on both sides. Then, the second knob 16 is rotated to change the distance between the first fixed support 2 and the second fixed support 25 on one side, so that both the first fixed support 2 and the two second fixed support 25 cooperate with the branch box body 1. Then, the branch box body 1 is placed on the support plate 7. Then, the second knob 16 is rotated again, and the long gear 20 drives the two end face gears 22 to rotate simultaneously, so that the two first fixed supports 2 and the two second fixed supports 25 are driven to move simultaneously, ultimately achieving the purpose of clamping and fixing the branch box body 1 with the two first fixed supports 2 and the two second fixed supports 25. With the support of the middle part of the support plate 7, the branch box body 1 is reliably installed and fixed. Furthermore, by limiting the first fixed support 2 to move elastically relative to the first turntable 4 and the second fixed support 25 to move elastically relative to the second turntable 24, the branch box body 1 can be adaptively and elastically clamped and fixed. That is, after one side of the L-shaped plate of the first fixed support 2 and the second fixed support 25 abuts against the branch box body 1, continuing to rotate the first turntable 4 and the second turntable 24 can make the other side of the L-shaped plate of the first fixed support 2 and the second fixed support 25 abut against the branch box body 1, so as to achieve reliable abutment between the first fixed support 2 and the second fixed support 25 and the branch box body 1, while improving the installation and fixing flexibility and support stability of the branch box body 1. By limiting the first outer cylinder 9, the inner rod 12 and the second outer cylinder 15, it can be ensured that the first fixed support 2 and the second fixed support 25 always move stably relative to the branch box body 1, avoiding the first fixed support 2 and the second fixed support 25 from twisting, and improving the reliability of the clamping and fixing operation.

[0044] Furthermore, the model and specific installation connection of each component are not limited and can be flexibly set in actual application. The scope of protection of this invention does not involve improvements to the software and methods.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A branch box mounting structure for power grids, comprising a fixing plate, characterized in that, Also includes: The motherboard is located on one side of the fixed plate, and a side plate is fixed to each end of the motherboard. The side plates are also fixedly connected to the fixed plate. Two mounting brackets are slidably provided on the motherboard. A support adjustment assembly is installed on the side plate. The support adjustment assembly is connected to both mounting brackets. The support adjustment assembly is used to support the mounting brackets and control the two mounting brackets to move closer or further away synchronously. The first turntable and the second turntable are rotatably mounted on the mounting bracket. The outer sides of the first turntable and the second turntable are respectively provided with a first gear ring and a second gear ring, and the first gear ring and the second gear ring are meshed together. The upper sides of the first turntable and the second turntable are also respectively mounted with a first fixed support and a second fixed support, and the first fixed support and the second fixed support are also connected by a guide component. The transmission assembly is also installed on the side plate. The transmission assembly is connected to the first turntable or the second turntable on the two mounting brackets. The transmission assembly is used to drive the first turntable or the second turntable on the two mounting brackets to rotate in opposite directions at the same time, so that the first fixed support and the second fixed support move closer to each other and clamp and fix the branch box body. The support adjustment assembly includes a first fixing bolt, a first knob, and a positive and negative threaded shaft; The mounting bracket has threaded holes, through which positive and negative threaded shafts pass and are threadedly connected to the threaded holes of the mounting bracket. The two ends of the positive and negative threaded shafts are also rotatably connected to the side plate. A first knob is also fixedly provided at one end of the positive and negative threaded shaft; One of the side plates is also provided with a first fixing bolt for fixing the positive and negative threaded shafts; When the positive and negative threaded shafts rotate, the two mounting brackets move closer or further apart synchronously; A rotating shaft is fixedly installed on the lower center of both the first and second turntables, and the rotating shaft is rotatably connected to the mounting bracket. The transmission assembly includes a second knob, a second fixing bolt, a transmission shaft, a long gear, and an end face gear; The lower side of the first turntable or the second turntable is also provided with an end face gear, which is fixedly connected to the lower end of the rotating shaft. The lower side of the end face gear is also provided with a transmission shaft, on which a long gear that meshes with the two end face gears is mounted and fixed. The two ends of the transmission shaft are also rotatably connected to the side plate. A second knob is fixedly installed at one end of the drive shaft; One of the side plates is also provided with a second fixing bolt for fixing the drive shaft; The first fixed support and the second fixed support are rotatably mounted on the lower side of the first fixed support and the second fixed support, respectively. Movable cavities are opened on the first turntable and the second turntable corresponding to the first fixed support and the second fixed support, and the support shaft extends into the movable cavity. The top of the first and second turntables is also provided with a movable opening for the support shaft to move, and the movable opening is connected to the movable cavity; The upper and lower parts of the movable cavity are respectively provided with a first guide plate and a second guide plate fixedly connected to the support shaft. The first guide plate is also slidably connected to the top of the movable cavity, and the second guide plate is also slidably connected to the bottom of the movable cavity. The movable cavity is also provided with multiple elastic elements circumferentially distributed in the middle. The outer ends of the elastic elements are fixedly connected to the side wall of the movable cavity, and the inner ends of the elastic elements are fixedly connected to the support shaft.

2. The power grid branch box installation structure according to claim 1, characterized in that, The motherboard is positioned perpendicular to the fixing plate, and the fixing plate is also provided with multiple fixing holes. The mounting bracket and the motherboard are connected in a non-detachable sliding manner.

3. The power grid branch box installation structure according to claim 1, characterized in that, The long gear is parallel to the positive and negative thread shafts, and the central axis of the long gear passes through the central axes of both end face gears. The long gear meshes with the side of the two end face gears that is close to each other.

4. The power grid branch box installation structure according to claim 1, characterized in that, The movable opening is circular in shape; Both the first guide disk and the second guide disk are disc-shaped structures, and the diameters of the first guide disk and the second guide disk are smaller than the diameter of the movable cavity; The elastic element is made of elastic rope or spring.

5. The power grid branch box installation structure according to claim 1, characterized in that, The first fixed support and the second fixed support have the same structure. Both the first fixed support and the second fixed support include a rectangular plate. The plate is rotatably mounted on the upper end of the support shaft. An L-shaped plate is integrally formed on the upper side of the plate. The L-shaped plates of the first fixed support and the second fixed support arranged on the same mounting bracket are arranged opposite to each other; The L-shaped plates of the two first fixed supports and the two second fixed supports are used to clamp and fix the bottom corners of the branch box body.

6. The power grid branch box installation structure according to claim 5, characterized in that, The guide assembly includes a first outer cylinder, an inner rod, and a second outer cylinder; On the same mounting frame, the outer sides of the L-shaped plates of the first fixed support and the second fixed support are respectively fixed with a first outer cylinder and a second outer cylinder. An inner rod is provided between the first outer cylinder and the second outer cylinder, and the inner rod is slidably connected to both the first outer cylinder and the second outer cylinder. The first fixed support and the second fixed support are provided with a number of ball bearings on the upper side of the flat plate and the side of the L-shaped plate near the branch box body.

7. The power grid branch box installation structure according to claim 6, characterized in that, A disc-shaped support plate is also provided at the middle position between the two first fixed supports and the two second fixed supports, and a number of support balls are installed on the support plate. The support plate is also connected and fixed to the main board via a support frame.

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