Power distribution box

Abstract

A power distribution box disclosed by the present invention comprises a cabinet body mechanism, the cabinet body mechanism comprises a power distribution cabinet body, the inner side of the power distribution cabinet body is provided with a maintenance auxiliary mechanism for auxiliary work, and the upper parts and the lower parts of the front parts of the two sides of an inner cavity of the cabinet body mechanism are fixedly connected with limiting convex blocks. And a power distribution cabinet door is rotationally connected to the surface between the two limiting convex blocks on the same side, and a linkage vertical rod is fixedly connected between the two limiting convex blocks on the same side. According to the electric power distribution box, the maintenance auxiliary mechanism is arranged on the inner side of the cabinet body mechanism, and a folding and blocking turnover plate included in the maintenance auxiliary mechanism is matched with the power distribution cabinet door for use, so that the folding and blocking turnover plate and the power distribution cabinet door can be butted and connected into a whole by an insertion rod through rotation of a grip during maintenance in rainy days, and a protection position is formed; rainwater is prevented from splashing into the power distribution cabinet body, and meanwhile, workers can be protected.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, specifically to a power distribution box. Background Technology

[0002] A distribution cabinet is a power distribution device that assembles switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment in a closed or semi-closed metal cabinet according to electrical wiring requirements. It is widely used in power plants, substations, industrial and mining enterprises, construction sites, etc. Due to the different environments in which distribution cabinets operate for a long time, their sealing performance is reduced, and leakage and electric shock accidents often occur due to rainwater entering. There are now patent documents that have improved this.

[0003] For example, Chinese patent CN206401736U describes an outdoor dustproof high-voltage distribution cabinet, comprising a cabinet body and a busbar compartment. The cabinet body has a rain shield at its upper end and ventilation and dustproof windows welded to its sides. The cabinet door is hinged to the instrument compartment. A protective frame is installed at the upper end of the cabinet door, and an observation window is installed below the protective frame. A handcart compartment is located above the busbar compartment, and an instrument compartment is located below the busbar compartment, with instruments installed on it. A ventilation window is located at the bottom of the cabinet body. This outdoor dustproof high-voltage distribution cabinet features a rubber protective frame to prevent contact between the cabinet door and internal wiring. The outer surface is coated with insulating paint to prevent electrical leakage from harming people and animals, improving electrical safety. Its right-angled, tiered structure effectively prevents rainwater and dust from entering, facilitating better power distribution operations and promoting the development of the power equipment industry.

[0004] Although the aforementioned document mentions installing rubber protective frames and applying insulating coatings to the surfaces to prevent electrical leakage from harming people and animals and improve electrical safety, it still has obvious shortcomings in actual use. For example, while the equipment can prevent rainwater from entering, this effect is only achieved when the distribution cabinet is stationary. Outdoor distribution cabinets, being installed outdoors, are subject to more factors. If an emergency maintenance operation is required due to a power problem during rainy weather, opening the distribution cabinet renders all the protective features useless, allowing rainwater to splash into the cabinet, wetting the personnel and increasing the risk of danger. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a power distribution box that solves the problem that existing distribution cabinets cannot handle complex operational situations.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a power distribution box, comprising a cabinet mechanism, wherein the cabinet mechanism includes a distribution cabinet body, and a maintenance auxiliary mechanism for auxiliary work is installed on the inner side of the distribution cabinet body.

[0007] Preferably, the upper and lower parts of the front of both sides of the inner cavity of the cabinet mechanism are fixedly connected to limiting protrusions. A power distribution cabinet door is rotatably connected between the surfaces of the two limiting protrusions on the same side. A linkage vertical rod is fixedly connected between the two limiting protrusions on the same side. A square groove is opened on the opposite side of the two power distribution cabinet doors. A guide hole groove is opened at the front and rear of the upper part of the inner side of the square groove. The upper and lower guide hole grooves pass through the power distribution cabinet door and extend to the upper and lower parts of the power distribution cabinet door, respectively.

[0008] Preferably, each of the two distribution cabinet doors has a threaded rod rotatably connected to its opposite side via a bearing. A handle is fixedly connected to the middle of the surface of the threaded rod. Threaded sleeves are threadedly connected to the upper and lower parts of the surface of the threaded rod. Push plates are fixedly connected to one side of each threaded sleeve via a bracket. The two push plates extend to the upper and lower parts of the inner side of the square groove, respectively. Insert rods that cooperate with guide hole grooves are fixedly connected to the front and rear parts of the opposite sides of the two push plates. One end of the insert rod extends to the inner side of the adjacent guide hole groove. A pressure ring is slidably installed on the surface of the linkage vertical rod, and one side of the pressure ring is fixedly connected to the lower threaded sleeve via a bracket.

[0009] Preferably, a first sliding plate is fixedly connected to both sides of the inner cavity of the power distribution cabinet body, and a plurality of first sliding plates are provided. A first sliding plate is slidably installed on the inner side of the first sliding plate. An installation platform is fixedly connected between the first sliding plates on both sides of the same plane. A second sliding plate is fixedly connected to both sides of the rear part of the inner cavity of the power distribution cabinet body. A second sliding plate is slidably installed on the inner side of the second sliding plate. A blocking rod is fixedly connected to the surface of the second sliding plate. The surface of the blocking rod is provided with a release groove, and the number of release grooves is the same as that of the installation platform.

[0010] Preferably, hollow frames are fixedly connected to both sides of the rear of the mounting platform. An arc-shaped block that cooperates with the blocking rod is rotatably connected between the upper and lower parts of the inner side of the hollow frame through a bearing. A first spring is fixedly connected between the arc-shaped block and the inner side of the hollow frame. Sliding rods are slidably installed on both sides of the rear of the mounting platform through openings. The rear end of the sliding rod is fixedly connected to the rear of the internal cavity of the power distribution cabinet. A third spring is sleeved on the surface of the sliding rod.

[0011] Preferably, a protective top plate is fixedly connected to the top of the power distribution cabinet body by a fixing block, a collar cylinder that cooperates with the pressure ring is slidably installed below the surface of the linkage vertical rod, and the collar cylinder is fixedly connected to the second sliding plate on the same side by a bracket, and a storage groove is provided on the upper part of the surface of the power distribution cabinet body.

[0012] Preferably, the maintenance auxiliary mechanism includes a third slide plate and two third slide plates are provided. The two third slide plates are respectively installed on both sides of the bottom of the internal cavity of the power distribution cabinet. A third sliding plate is slidably installed on the inner side of the third slide plate. A pressing insert is slidably installed on the rear side of the top of the third sliding plate through an opening. A supporting vertical rod is slidably installed on the inner side of the pressing insert. A storage frame is placed on the inner side of the storage slot. The top of the supporting vertical rod is fixedly connected to the bottom of the storage frame.

[0013] Preferably, both sides of the top of the storage frame are rotatably connected to a folding flap through openings, and the front and rear parts of both sides of the folding flap are provided with docking holes that cooperate with the guide slots.

[0014] Preferably, a slip ring is fitted on the lower part of the surface of the support rod, and a seat plate is rotatably connected to the opposite side of the two slip rings through a bearing component. A pressure ring that cooperates with the slip ring is fixedly connected to the outer periphery of the top end of the third spring. An L-shaped support rod that cooperates with the seat plate is fixedly connected to the rear part of the pressure ring. A third spring is fitted on the surface of the pressure insert.

[0015] Preferably, a fan is fixedly connected to the bottom of the storage frame.

[0016] Beneficial effects

[0017] This invention provides a power distribution box. Compared with existing technologies, it has the following advantages:

[0018] (1) The power distribution box has a maintenance auxiliary mechanism on the inside of the cabinet. The maintenance auxiliary mechanism includes a folding flap that works with the distribution cabinet door. When maintaining in the rain, the handle can be rotated to connect the folding flap and the distribution cabinet door together to form a protective position, preventing rainwater from splashing into the inside of the distribution cabinet body. It can also protect the staff and improve the emergency safety of the distribution cabinet body. At the same time, the fan on the top can not only dissipate heat inside but also blow air for the staff.

[0019] (2) The power distribution box is equipped with a slip ring on the surface of the support rod and a seat plate is rotatably installed on one side of the slip ring. It is used in conjunction with an L-shaped support rod and a downward-pressing plug. These structures can provide a resting place for the staff during maintenance, avoiding discomfort caused by standing or squatting for a long time. At the same time, the downward-pressing plug can also provide further fixation for the distribution cabinet door when it is pressed down to contact the ground, ensuring that it will not be blown by the wind and shake during maintenance.

[0020] (3) The power distribution box has an installation platform installed on the inside of the distribution cabinet body, and an arc-shaped block that works with the blocking rod and the release slot is installed at the rear of the installation platform. At the same time, the blocking rod is connected to the collar cylinder through the second sliding plate. After the threaded rod rotates and the folding plate and the distribution cabinet door are connected, the blocking rod can be lifted directly, so that the release slot is connected with the arc-shaped block. The installation platform loses its limit and can be directly popped out by the third spring, so that the staff has enough space to operate.

[0021] (4) The power distribution box is equipped with hollow frames on both sides of the rear of the mounting platform, and an arc block is rotatably connected to the inner side of the hollow frame and used in conjunction with the first spring. These structures can be used to limit and fix the device in daily use by the arc block, and the mounting platform can be released during maintenance to ensure the stability of the equipment.

[0022] The attached diagram illustrates

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the maintenance auxiliary mechanism structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the L-shaped support rod, the lower pressure ring, and the third spring structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the fan structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the cabinet mechanism structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the threaded rod, handle, push plate, and insert rod structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the power distribution cabinet door, square groove, and guide hole groove structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the mounting platform, storage groove, and collar cylinder structure of the present invention.

[0031] Figure 9 This is a schematic diagram of the mounting platform, the second sliding plate, and the blocking rod structure of the present invention.

[0032] Figure 10 This is a schematic diagram of the structure of the first sliding plate, the mounting platform, and the second sliding groove plate of the present invention;

[0033] Figure 11 For the present invention Figure 10 A magnified view of a section at point A in the middle;

[0034] Figure 12 This is a schematic diagram of the second sliding plate, blocking rod, and discharge groove structure of the present invention;

[0035] Figure 13 This is a schematic diagram of the hollow frame, arc block, and first spring structure of the present invention.

[0036] In the diagram: 1. Cabinet structure; 2. Maintenance auxiliary mechanism; 101. Distribution cabinet body; 102. Limiting protrusion; 103. Distribution cabinet door; 104. Linkage vertical rod; 105. Square slot; 106. Guide hole slot; 107. Threaded rod; 108. Handle; 109. Push plate; 110. Insert rod; 111. Threaded sleeve; 112. Pressure ring; 113. First sliding plate; 114. First sliding plate; 115. Mounting platform; 116. Second sliding plate; 117. Second sliding plate; 118. Blocking rod; 119. Opening groove; 120 121. Hollow frame; 122. Arc-shaped block; 123. First spring; 124. Second spring; 125. Slide rod; 126. Third spring; 127. Protective top plate; 128. Storage slot; 129. Ring cylinder; 201. Third slide plate; 202. Third slide plate; 203. Downward pressing cylinder; 204. Supporting vertical rod; 205. Storage frame; 206. Folding flap; 207. Connecting hole; 208. Slip ring; 209. Seat cushion plate; 210. L-shaped support rod; 211. Downward pressing ring; 212. Fan; 213. Third spring. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] Please see Figure 1-13 The present invention provides a technical solution: a power distribution box, including a cabinet mechanism 1, the cabinet mechanism 1 including a distribution cabinet body 101, and a maintenance auxiliary mechanism 2 for auxiliary work is installed on the inner side of the distribution cabinet body 101.

[0039] Please refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13The diagram illustrates the overall structure of the cabinet mechanism 1. Limiting protrusions 102 are fixedly connected to the upper and lower parts of the front sides of both sides of the inner cavity of the cabinet mechanism 1. The limiting protrusions 102 are made of smooth steel. A distribution cabinet door 103 is rotatably connected between the surfaces of the two limiting protrusions 102 on the same side. A linkage vertical rod 104 is fixedly connected between the two limiting protrusions 102 on the same side. The linkage vertical rod 104 does not provide support for the distribution cabinet door 103. A square groove 105 is provided on the opposite side of each of the two distribution cabinet doors 103. Guide slots 106 are provided at the front and rear of the upper part of the inner side of the square groove 105. The upper and lower guide slots 106 penetrate the distribution cabinet door 103 and extend to the upper and lower parts of the distribution cabinet door 103, respectively. All are rotatably connected to threaded rods 107 via bearings. A handle 108 is fixedly connected to the middle of the surface of the threaded rod 107. Threaded sleeves 111 are threadedly connected to the upper and lower parts of the surface of the threaded rod 107, and the two threaded sleeves 111 are arranged oppositely. Push plates 109 are fixedly connected to one side of each threaded sleeve 111 via brackets. The two push plates 109 extend to the upper and lower parts of the inner side of the square groove 105, respectively. Insert rods 110 that mate with guide hole grooves 106 are fixedly connected to the front and rear parts of the opposite sides of the two push plates 109. The lower insert rod 110 contacts the ground for fixing, and one end of the insert rod 110 extends to the inner side of the adjacent guide hole groove 106. A pressure ring 112 is slidably installed on the surface of the linkage vertical rod 104. The pressure ring 112 is used for... The collar cylinder 128 is pressed down, and one side of the pressure ring 112 is fixedly connected to the lower threaded sleeve 111 through a bracket. First sliding plates 113 are fixedly connected to both sides of the inner cavity of the distribution cabinet body 101, and several first sliding plates 113 are provided. A first sliding plate 114 is slidably installed on the inner side of the first sliding plate 113. A mounting platform 115 is fixedly connected between the two first sliding plates 114 on the same plane. Second sliding plates 116 are fixedly connected to both sides of the rear part of the inner cavity of the distribution cabinet body 101. A second sliding plate 117 is slidably installed on the inner side of the second sliding plate 116. A blocking rod 118 is fixedly connected to the surface of the second sliding plate 117. A through groove 119 is opened on the surface of the blocking rod 118, and the number of through grooves 119 is the same as the number of mounting platforms 115. Hollow frames 120 are fixedly connected to both sides of the rear of the mounting platform 115. An arc-shaped block 121, which works in conjunction with a blocking rod 118, is rotatably connected between the upper and lower parts of the inner side of the hollow frame 120 via bearing components. The arc-shaped block 121 can only rotate forward due to the limitation of the hollow frame 120. A first spring 122 is fixedly connected between the arc-shaped block 121 and the inner side of the hollow frame 120, and the first spring 122 can reset the arc-shaped block 121. Sliding rods 124 are slidably installed on both sides of the rear of the mounting platform 115 through openings. The rear end of the sliding rod 124 is fixedly connected to the rear of the inner cavity of the distribution cabinet body 101. A third spring 125 is sleeved on the surface of the sliding rod 124. A protective top plate 126 is fixedly connected to the top of the distribution cabinet body 101 via a fixing block.A collar cylinder 128, which mates with the pressure ring 112, is slidably installed below the surface of the linkage vertical rod 104. The collar cylinder 128 is fixedly connected to the second sliding plate 117 on the same side via a bracket. A storage slot 127 is provided on the upper part of the surface of the distribution cabinet body 101.

[0040] Please refer to Figure 2 , Figure 3 and Figure 4 The diagram illustrates the overall structure of the maintenance auxiliary mechanism 2. The maintenance auxiliary mechanism 2 includes two third slide plates 201, each installed on either side of the bottom of the distribution cabinet body 101. A third sliding plate 202 is slidably mounted on the inner side of the third slide plate 201. A pressing insert 203 is slidably mounted on the rear side of the top of the third sliding plate 202 through an opening. A supporting vertical rod 204 is slidably mounted on the inner side of the pressing insert 203. A storage frame 205 is placed inside the storage slot 127. The top of the supporting vertical rod 204 is fixedly connected to the bottom of the storage frame 205. Folding flaps 206 are rotatably connected to both sides of the top of the storage frame 205 through openings. 206 is made of hard rubber with a waterproof coating. The front and rear sides of the folding flap 206 are provided with mating holes 207 that cooperate with the guide slots 106. The lower part of the surface of the support rod 204 is fitted with a slip ring 208. The opposite side of the two slip rings 208 is rotatably connected to the seat plate 209 through a bearing. The outer periphery of the top of the third spring 213 is fixedly connected with a pressure ring 211 that cooperates with the slip ring 208. The rear of the pressure ring 211 is fixedly connected with an L-shaped support rod 210 that cooperates with the seat plate 209. The surface of the pressure insert 203 is fitted with a third spring 213. The bottom of the storage frame 205 is fixedly connected with a fan 212, which is used to dissipate heat from the equipment.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] Before use, first open the two distribution cabinet doors 103 to both sides. Then, pull the two support rods 204 by hand to pull the storage frame 205 and the seat plate 209 out from the inside of the distribution cabinet body 101 under the limit of the third sliding plate 202. After the storage frame 205 is fully pulled out, flip the two top folding flaps 206 to the sides. At this time, the docking hole 207 at the top of the folding flap 206 coincides with the guide hole groove 106. Then, hold the two handles 108 in turn and rotate them. After rotation, the entire threaded rod 107 will rotate. After the threaded rod 107 rotates, the two threaded sleeves 111 drive the two push plates 109 to move up and down in opposite directions, inserting the insertion rod 110 into the inside of the guide hole groove 106. The top of the upper insertion rod 110 passes through the guide hole groove 106 and the docking hole 207 to fix the folding plate 206. The lower insertion rod 110 extends through the guide hole groove 106 to the lower part of the distribution cabinet door 103 and contacts the ground, thus fixing the two distribution cabinet doors 103.

[0043] When the lower threaded sleeve 111 descends, it will drive the pressure ring 112 to press down the collar cylinder 128, so that the collar cylinder 128 will also pull the entire blocking rod 118 down through the second sliding plate 117, so that the part of the release groove 119 is connected with the arc block 121. Since the part of the release groove 119 is a narrow surface, the arc block 121 loses the limit of the blocking rod 118 and no longer fixes the mounting platform 115. The entire mounting platform 115 is pushed out from the inside of the distribution cabinet body 101 by the elastic force of the third spring 125, which facilitates operation.

[0044] After the installation platform 115 pops out the power distribution cabinet body 101, flip the two cushions 209 forward to flatten them, so that the cushions 209 rest on the top of the L-shaped support rod 210 to support them. Then sit on the top of the cushions 209, and the slip ring 208 presses down the insertion cylinder 203 through the third sliding plate 202, losing contact with the ground at the bottom end. Then fix the storage frame 205 and the two power distribution cabinet doors 103 again. The L-shaped support rod 210 at the bottom of the storage frame 205 can be blown.

[0045] After maintenance is completed, first reverse the threaded rod 107 to retract the upper and lower insert rods 110. At the same time, the collar cylinder 128 loses its limit, causing the blocking rod 118 to rise under the thrust of the second spring 123, causing the release groove 119 to be misaligned with the arc block 121. Then, push several mounting platforms 115 in sequence. After the arc block 121 contacts, the blocking rod 118 rotates and is finally fixed by the action of the hollow frame 120 in conjunction with the blocking rod 118. Then, reset and close the storage frame 205 and the distribution cabinet door 103 in sequence.

Claims

1. A power distribution box, comprising a cabinet mechanism (1), characterized in that: The cabinet mechanism (1) includes a power distribution cabinet body (101), and a maintenance auxiliary mechanism (2) for auxiliary work is installed on the inner side of the power distribution cabinet body (101).

2. The power distribution box according to claim 1, characterized in that: The upper and lower parts of the front of both sides of the inner cavity of the cabinet mechanism (1) are fixedly connected to the limiting protrusions (102). The surface between the two limiting protrusions (102) on the same side is rotatably connected to the distribution cabinet door (103). The two limiting protrusions (102) on the same side are fixedly connected to the linkage vertical rod (104). The two distribution cabinet doors (103) are provided with square grooves (105) on opposite sides. The front and rear parts of the upper part of the inner side of the square groove (105) are provided with guide hole grooves (106). The upper and lower guide hole grooves (106) pass through the distribution cabinet door (103) and extend to the upper and lower parts of the distribution cabinet door (103) respectively.

3. A power distribution box according to claim 2, characterized in that: Each of the two distribution cabinet doors (103) has a threaded rod (107) rotatably connected to one side of the opposite side via a bearing. A handle (108) is fixedly connected to the middle of the surface of the threaded rod (107). Threaded sleeves (111) are threadedly connected to the upper and lower parts of the surface of the threaded rod (107). Push plates (109) are fixedly connected to one side of each threaded sleeve (111) via a bracket. The two push plates (109) extend to the upper and lower parts of the inner side of the square groove (105), respectively. Insert rods (110) that cooperate with guide hole grooves (106) are fixedly connected to the front and rear parts of the opposite sides of the two push plates (109). One end of the insert rod (110) extends to the inner side of the adjacent guide hole groove (106). A pressure ring (112) is slidably installed on the surface of the linkage vertical rod (104). One side of the pressure ring (112) is fixedly connected to the lower threaded sleeve (111) via a bracket.

4. A power distribution box according to claim 2, characterized in that: Both sides of the inner cavity of the power distribution cabinet body (101) are fixedly connected to a first sliding plate (113), and there are several first sliding plates (113). A first sliding plate (114) is slidably installed on the inner side of the first sliding plate (113). An installation platform (115) is fixedly connected between the first sliding plates (114) on both sides of the same plane. Both sides of the rear part of the inner cavity of the power distribution cabinet body (101) are fixedly connected to a second sliding plate (116). A second sliding plate (117) is slidably installed on the inner side of the second sliding plate (116). A blocking rod (118) is fixedly connected to the surface of the second sliding plate (117). A release groove (119) is opened on the surface of the blocking rod (118), and the number of release grooves (119) is the same as that of the installation platform (115).

5. A power distribution box according to claim 4, characterized in that: Hollow frames (120) are fixedly connected to both sides of the rear of the mounting platform (115). An arc-shaped block (121) that works with a blocking rod (118) is rotatably connected between the upper and lower parts of the inner side of the hollow frame (120) through a bearing. A first spring (122) is fixedly connected between the arc-shaped block (121) and the inner side of the hollow frame (120). A sliding rod (124) is slidably installed on both sides of the rear of the mounting platform (115) through openings. The rear end of the sliding rod (124) is fixedly connected to the rear part of the inner cavity of the power distribution cabinet body (101). A third spring (125) is sleeved on the surface of the sliding rod (124).

6. A power distribution box according to claim 4, characterized in that: The top of the power distribution cabinet body (101) is fixedly connected to a protective top plate (126) by a fixing block. A collar cylinder (128) that works with the pressure ring (112) is slidably installed below the surface of the linkage vertical rod (104). The collar cylinder (128) is fixedly connected to the second sliding plate (117) on the same side by a bracket. A storage groove (127) is provided on the upper part of the surface of the power distribution cabinet body (101).

7. A power distribution box according to claim 6, characterized in that: The maintenance auxiliary mechanism (2) includes a third slide plate (201) and there are two third slide plates (201). The two third slide plates (201) are respectively installed on both sides of the bottom of the inner cavity of the power distribution cabinet body (101). A third slide plate (202) is slidably installed on the inner side of the third slide plate (201). A pressing tube (203) is slidably installed on the rear side of the top of the third slide plate (202) through an opening. A supporting vertical rod (204) is slidably installed on the inner side of the pressing tube (203). A storage frame (205) is placed on the inner side of the storage slot (127). The top of the supporting vertical rod (204) is fixedly connected to the bottom of the storage frame (205).

8. A power distribution box according to claim 7, characterized in that: The top of the storage frame (205) has two sides of the top that are rotatably connected to a folding flap (206) through openings. The front and rear sides of the folding flap (206) are provided with docking holes (207) that cooperate with the guide slot (106).

9. A power distribution box according to claim 7, characterized in that: A slip ring (208) is fitted on the lower part of the surface of the support rod (204). A seat plate (209) is rotatably connected to the opposite side of the two slip rings (208) through a bearing. A pressure ring (211) that cooperates with the slip ring (208) is fixedly connected to the outer periphery of the top of the third spring (213). An L-shaped support rod (210) that cooperates with the seat plate (209) is fixedly connected to the rear part of the pressure ring (211). A third spring (213) is fitted on the surface of the pressure insert (203).

10. A power distribution box according to claim 8, characterized in that: A fan (212) is fixedly connected to the bottom of the storage box (205).

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