Power distribution cabinet with anti-electromagnetic interference function

Abstract

The invention discloses a power distribution cabinet with an anti-electromagnetic interference function, which comprises a power distribution box, a hinge piece, a box door, a control key, a shielding top and a supporting leg, and is characterized in that the hinge piece is arranged at one end of the power distribution box, the box door is arranged at the other end of the hinge piece, the control key is arranged on the outer side of the box door, and the shielding top is arranged on the outer side of the control key; the shielding top is fixedly connected to the top of the distribution box, the supporting legs are fixedly connected to the bottom of the distribution box, the distribution box comprises a box body, a partition plate, an air duct, an air inlet fan, an exhaust fan, a supporting rod, a mounting frame and an anti-electromagnetic interference assembly, and the partition plate is fixedly connected to the interior of the box body. According to the power distribution box, air in the box body is circulated through the air inlet fan and the exhaust fan, heat of electronic equipment in the box body is reduced, more stable operation is ensured, radio wave interference caused by natural exhaust opening is avoided, the main body area is sealed, and the anti-electromagnetic interference effect of the power distribution box is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, in particular to a power distribution cabinet with an anti-electromagnetic interference function. Background Art

[0002] The distribution cabinet (box) is the final equipment of the power distribution system, which is mainly used to distribute electric energy to various electrical equipment and monitor and control the power supply. According to different functions and application scenarios, the distribution cabinet can be divided into power distribution cabinet (box), lighting distribution cabinet (box) and metering cabinet (box). The distribution cabinet is a general term for the motor control center. It is used in occasions with relatively dispersed loads and fewer circuits. It is used to distribute the electric energy of a circuit of the upper-level distribution equipment to the nearest load.

[0003] A distribution cabinet is usually composed of a casing, busbar, circuit breaker, contactor, protection device, instrument and connecting cable. The casing is generally made of metal and has good electromagnetic shielding performance and protection level. The busbar, as the transmission channel of electric energy, is responsible for introducing electric energy from the upper-level distribution equipment into the distribution cabinet. Circuit breakers, contactors and other components are used for circuit disconnection, connection and protection. Protection devices are used to monitor the status of the circuit and cut off the power supply under abnormal circumstances. Instruments are used to display circuit parameters such as voltage and current.

[0004] Electromagnetic interference will occur during the use of the distribution cabinet. Electromagnetic interference mainly comes from various transmission lines, electrical equipment and wireless communication equipment. These interference sources will seriously affect the operating stability of electrical components and equipment in the distribution cabinet. When the electromagnetic interference reaches a certain level, it may cause abnormal operation of the internal equipment of the distribution cabinet, or even cause failures, causing malfunctions of electrical equipment, such as false tripping of circuit breakers, false closure of contactors, etc., thereby threatening the safe and stable operation of the power system.

[0005] Therefore, it is necessary to design a distribution cabinet with anti-electromagnetic interference function that is highly practical and easy to maintain. Summary of the invention

[0006] The purpose of the present invention is to provide a power distribution cabinet with anti-electromagnetic interference function to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a distribution cabinet with anti-electromagnetic interference function, comprising a distribution box, a hinge, a box door, a control key, a shielding top and a support leg, the hinge being arranged at one end of the distribution box, the box door being arranged at the other end of the hinge, the control key being installed on the outside of the box door, the shielding top being fixedly connected to the top of the distribution box, and the support leg being fixedly connected to the bottom of the distribution box.

[0008] The distribution box includes a box body, a partition, an air trough, an air inlet fan, an exhaust fan, a support rod, a mounting frame and an anti-electromagnetic interference component. The partition is fixedly connected to the interior of the box body, the air trough is opened at both ends of the interior of the partition, the air inlet fan is installed at one end of the bottom of the box body, and the exhaust fan is installed at the other end of the bottom of the box body. The support rod is fixedly connected to the inner wall of the box body, the mounting frame is fixedly connected to one end of the support rod, and the anti-electromagnetic interference component is installed on one side of the inner wall of the box body. The air in the box body is circulated through the air inlet fan and the exhaust fan to reduce the heat of the electronic equipment inside the box body, ensure smoother operation, avoid radio wave interference caused by natural exhaust openings, form a sealing condition for the main area, and increase the anti-electromagnetic interference effect of the distribution box.

[0009] According to the above technical scheme, the anti-electromagnetic interference component includes an outer shell, a fixed plate, a top cover, a slide rail, a movable base plate, a handle, a positioning block, a mounting plate, a fixing mechanism and an anti-electromagnetic device. The outer shell is fixedly connected to the inner wall of the box body, the fixed plate is fixedly connected to the two ends of the outer shell, the top cover is fixedly connected to the top of the outer shell, the slide rail is fixedly connected to the two ends inside the outer shell, the movable base plate is slidably connected to the outside of the slide rail, the handle is fixedly connected to one side of the movable base plate, the positioning block is fixedly connected to the top of the movable base plate, the mounting plate is snap-connected to the inner side of the positioning block, the fixing mechanism is arranged at the two ends of the mounting plate, and the anti-electromagnetic device is installed on the top of the mounting plate. By adopting a pulling method, the anti-electromagnetic device can be quickly taken out of the outer shell, and then the mounting plate can be removed through the setting of the fixing mechanism, which is convenient for the inspection and replacement of the anti-electromagnetic device and ensures the use effect of the anti-electromagnetic interference.

[0010] According to the above technical solution, the fixing mechanism includes a mounting block, a rotating rod, a driving motor, a transmission member and a linkage rod. The mounting block is fixedly connected to the top of the movable base plate, the rotating rod is rotatably connected to the two ends of the mounting block, the driving motor is fixedly connected to the inside of the mounting block, the transmission member is arranged at one end of the driving motor, the other end of the transmission member is connected to the rotating rod, and the linkage rod is fixedly connected to the other end of the transmission member. The transmission member adopts a transmission wheel and a transmission belt to input the power of the driving motor into the rotating rod. In conjunction with the use of the linkage rod, the two rotating rods are rotated synchronously to press down and fix the mounting plate.

[0011] According to the above technical solution, the box body includes a metal outer layer, a metal inner layer and an absorbing material. The metal outer layer is fixedly connected to one side of the absorbing material, and the metal inner layer is fixedly connected to the other side of the absorbing material. The metal outer layer is used to directly shield electromagnetic interference from the external environment, and the metal inner layer is used to assist the shielding layer to further enhance the overall shielding function. The absorbing material between the metal inner layer and the metal outer layer is made of ferrite material to absorb the remaining electromagnetic waves that penetrate the outer layer to ensure an electromagnetic-free environment inside the box.

[0012] According to the above technical solution, the mounting plate includes a plate body, a mounting groove and a fixing hole. The four corners of the plate body are right angles, and the size of the right angle is consistent with the inner size of the positioning block to ensure that the plate body can be snapped into the inside of the positioning block. The mounting groove is provided with the top of the plate body to facilitate the positioning and installation of the anti-electromagnetic device. The fixing hole is provided inside the mounting groove, and a fixing screw is used to penetrate the anti-electromagnetic device to cooperate with the fixing hole for screw installation to ensure that the anti-electromagnetic device is firmly fixed.

[0013] According to the above technical scheme, the air intake fan includes a fan group, an air intake pipe, a filter layer and an exhaust pipe. The fan group is fixedly connected to the bottom of the inside of the box, the air intake pipe is arranged at one end of the fan group, the filter layer is arranged at one end of the air intake pipe, and the exhaust pipe is arranged at the top of the filter layer. When the fan group is started, the external air is input into the inside of the box through the exhaust pipe. The filter layer is used to isolate dust and play a dust-proof role. The size of the exhaust pipe is larger than the size of the wind slot to ensure that the circulating air can be input to the top of the box, and then cooperate with the exhaust fan to extract the air to achieve the effect of circulating heat dissipation.

[0014] According to the above technical solution, the support leg includes a support base plate, a support frame and a grounding pipe. The support frame is fixedly connected to the bottom of the box, the support base plate is fixedly connected to the bottom of the support frame, and the grounding pipe is fixedly connected to the inside of the support frame. The top of the grounding pipe passes through the box and extends to the inside, ensuring that the internal metal parts and all equipment that needs to be grounded are reliably grounded. Good grounding can effectively reduce common mode interference, and serve as a release path for internal electromagnetic waves to achieve anti-interference function.

[0015] According to the above technical scheme, the anti-electromagnetic device includes an anti-electromagnetic interference device, an isolator, a shield and a relay. The isolator blocks the interference signal before it enters the device to prevent the interference signal from entering the device through the equivalent circuit. The shield is mainly used to prevent external interference signals from entering the device. The relay is used as a control component in the anti-electromagnetic interference device to control the on and off of the anti-interference device. The anti-electromagnetic device composed of the above devices plays an important role in protecting electronic equipment from external electromagnetic interference, thereby ensuring the normal operation of the equipment and the stability of the signal.

[0016] According to the above technical solution, the number of the mounting plates is two, and two sets of anti-electromagnetic devices are installed on one mounting plate, thereby ensuring the installation quantity of the anti-electromagnetic devices and thus ensuring the perfection of the anti-electromagnetic interference function.

[0017] According to the above technical solution, the number of the support rods is four, which are evenly distributed inside the box, ensuring that the power accessories are installed evenly, thereby ensuring that the power equipment is anti-electromagnetic interference.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention circulates the air in the box through the air inlet fan and the exhaust fan, reduces the heat of the electronic equipment inside the box, ensures more stable operation, avoids the radio wave interference caused by the natural exhaust opening, forms a sealing condition for the main area, and increases the anti-electromagnetic interference effect of the distribution box.

[0019] 2. The present invention can quickly take out the anti-electromagnetic device from the housing by pulling out the device, and then remove the mounting plate by setting a fixing mechanism, so as to facilitate the inspection and replacement of the anti-electromagnetic device and ensure the anti-electromagnetic interference effect.

[0020] 3. In the present invention, the metal outer layer is used to directly shield the electromagnetic interference from the external environment, and the metal inner layer is used to assist the shielding layer to further enhance the overall shielding function. The absorbing material between the metal inner layer and the metal outer layer is made of ferrite material to absorb the remaining electromagnetic waves that penetrate the outer layer, thereby ensuring an electromagnetic-free environment inside the box.

[0021] 4. The present invention plays an important role in protecting electronic equipment from external electromagnetic interference by arranging an anti-electromagnetic interference device, an isolator, a shield and a relay to form an anti-electromagnetic device, thereby ensuring the normal operation of the equipment and the stability of the signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the distribution box of the present invention; Figure 3 It is a schematic diagram of the structure of the anti-electromagnetic interference component of the present invention; Figure 4 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 5 It is a structural schematic diagram of the box body of the present invention; Figure 6 It is a structural schematic diagram of the mounting plate of the present invention; Figure 7 It is a structural schematic diagram of the air inlet fan of the present invention; Figure 8 It is a structural schematic diagram of the supporting leg of the present invention.

[0024] In the figure: 1, distribution box; 2, hinge; 3, box door; 4, control key; 5, shielding top; 6, supporting leg; 101, box body; 102, partition; 103, air trough; 104, air inlet fan; 105, exhaust fan; 106, support rod; 107, mounting frame; 108, anti-electromagnetic interference component; 110, shell; 111, fixing plate; 112, top cover; 113, slide rail; 114, movable bottom plate; 115, handle; 116, positioning block; 117, mounting plate; 11 8. Fixing mechanism; 119. Anti-electromagnetic device; 120. Mounting block; 121. Rotating rod; 122. Driving motor; 123. Transmission member; 124. Linkage rod; 130. Metal outer layer; 131. Metal inner layer; 132. Absorbing material; 140. Plate body; 141. Mounting groove; 142. Fixing hole; 150. Fan unit; 151. Air inlet pipe; 152. Filter layer; 153. Exhaust pipe; 601. Support base plate; 602. Support frame; 603. Grounding pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-8 The present invention provides the following technical solutions: A distribution cabinet with anti-electromagnetic interference function, comprising a distribution box 1, a hinge 2, a box door 3, a control key 4, a shielding top 5 and a support leg 6, the hinge 2 is arranged at one end of the distribution box 1, the box door 3 is arranged at the other end of the hinge 2, the control key 4 is installed on the outside of the box door 3, the shielding top 5 is fixedly connected to the top of the distribution box 1, and the support leg 6 is fixedly connected to the bottom of the distribution box 1.

[0027] The distribution box 1 includes a box body 101, a partition 102, an air trough 103, an air inlet fan 104, an exhaust fan 105, a support rod 106, a mounting frame 107 and an anti-electromagnetic interference component 108. The partition 102 is fixedly connected to the inside of the box body 101, the air trough 103 is opened at both ends of the inside of the partition 102, the air inlet fan 104 is installed at one end of the bottom of the box body 101, the exhaust fan 105 is installed at the other end of the bottom of the box body 101, the support rod 106 is fixedly connected to the inner wall of the box body 101, the mounting frame 107 is fixedly connected to one end of the support rod 106, and the anti-electromagnetic interference component 108 is installed on the inner wall of the box body 101. On one side, the air in the box 101 is circulated through the air inlet fan 104 and the exhaust fan 105 to reduce the heat of the electronic equipment inside the box 101, ensure smoother operation, avoid radio wave interference caused by the natural exhaust openings, and form a seal in the main area to increase the anti-electromagnetic interference effect of the distribution box 1. There are four support rods 106, which are evenly distributed inside the box 101 to ensure uniform installation of power accessories, thereby ensuring the anti-electromagnetic interference of power equipment. Sealing strips are installed at the gaps in the inner wall of the box 101 to prevent electromagnetic waves from leaking or intruding from these weak points, and also to play a dust-proof role.

[0028] The anti-electromagnetic interference component 108 includes a shell 110, a fixing plate 111, a top cover 112, a slide rail 113, a movable bottom plate 114, a handle 115, a positioning block 116, a mounting plate 117, a fixing mechanism 118 and an anti-electromagnetic device 119. The shell 110 is fixedly connected to the inner wall of the box body 101, the fixing plate 111 is fixedly connected to both ends of the shell 110, the top cover 112 is fixedly connected to the top of the shell 110, the slide rail 113 is fixedly connected to both ends inside the shell 110, the movable bottom plate 114 is slidably connected to the outside of the slide rail 113, the handle 115 is fixedly connected to one side of the movable bottom plate 114, the positioning block 116 is fixedly connected to the top of the movable bottom plate 114, the mounting plate 117 is snap-connected to the inner side of the positioning block 116, and the fixing mechanism 118 is arranged on the mounting plate 117. At both ends of the plate 117, the anti-electromagnetic device 119 is installed on the top of the mounting plate 117. The anti-electromagnetic device 119 can be quickly taken out of the housing 110 by pulling, and then the mounting plate 117 can be removed by the setting of the fixing mechanism 118, so as to facilitate the inspection and replacement of the anti-electromagnetic device 119. By adopting anti-electromagnetic interference design and technical means, the impact of external electromagnetic interference on the internal equipment of the distribution cabinet can be effectively reduced, and the stability and reliability of the equipment can be improved. The anti-electromagnetic interference distribution cabinet can reduce the equipment malfunctions and failures caused by electromagnetic interference, thereby ensuring the safe and stable operation of the power system. For the distribution cabinet that needs to collect and transmit data, the anti-electromagnetic interference design can ensure the transmission quality of the data signal and ensure the accuracy and integrity of the data.

[0029] The air inlet fan 104 includes a fan group 150, an air inlet pipe 151, a filter layer 152 and an exhaust pipe 153. The fan group 150 is fixedly connected to the bottom of the inside of the box 101, the air inlet pipe 151 is arranged at one end of the fan group 150, the filter layer 152 is arranged at one end of the air inlet pipe 151, and the exhaust pipe 153 is arranged at the top of the filter layer 152. When the fan group 150 is started, the external air is input into the inside of the box 101 through the exhaust pipe 153. The filter layer 152 is used to isolate dust and play a dust-proof role. The size of the exhaust pipe 153 is larger than the size of the wind slot 103, ensuring that the circulating air can be input to the top of the box 101, and then cooperate with the exhaust fan 105 to extract the air to achieve the effect of circulating heat dissipation.

[0030] The fixing mechanism 118 includes a mounting block 120, a rotating rod 121, a driving motor 122, a transmission member 123 and a linkage rod 124. The mounting block 120 is fixedly connected to the top of the movable base plate 114, the rotating rod 121 is rotatably connected to both ends of the mounting block 120, the driving motor 122 is fixedly connected to the inside of the mounting block 120, the transmission member 123 is arranged at one end of the driving motor 122, the other end of the transmission member 123 is connected to the rotating rod 121, and the linkage rod 124 is fixedly connected to the other end of the transmission member 123. The transmission member 123 adopts a transmission wheel and a transmission belt for inputting the power of the driving motor 122 to the rotating rod 121. With the use of the linkage rod 124, the two rotating rods 121 are rotated synchronously to press down and fix the mounting plate 117. A rubber pad is arranged at the bottom of the rotating rod 121. The friction force at the bottom of the rotating rod 121 is increased by the rubber pad to ensure that the rotating rod 121 is firmly fixed to the mounting plate 117.

[0031] The mounting plate 117 includes a plate body 140, a mounting groove 141 and a fixing hole 142. The four corners of the plate body 140 are right angles, and the size of the right angle is consistent with the inner size of the positioning block 116 to ensure that the plate body 140 can be snapped into the interior of the positioning block 116. The mounting groove 141 is provided with the top of the plate body 140 to facilitate the positioning and installation of the anti-electromagnetic device 119. The fixing hole 142 is provided in the interior of the mounting groove 141. A fixing screw is used to penetrate the anti-electromagnetic device 119 to cooperate with the fixing hole 142 for screw installation to ensure that the anti-electromagnetic device 119 is firmly fixed. There are two mounting plates 117, and two groups of anti-electromagnetic devices 119 are installed on one mounting plate 117 to ensure the installation quantity of the anti-electromagnetic device 119, thereby ensuring the perfection of the anti-electromagnetic interference function.

[0032] The anti-electromagnetic device 119 includes an anti-electromagnetic interference device, an isolator, a shield and a relay. The isolator blocks the interference signal before it enters the device to prevent the interference signal from entering the device through the equivalent circuit. The shield is mainly used to prevent external interference signals from entering the device. The relay is used as a control component in the anti-electromagnetic interference device to control the on and off of the anti-interference device. The anti-electromagnetic device 119 composed of the above devices plays an important role in protecting electronic equipment from external electromagnetic interference, ensuring the normal operation of the equipment and the stability of the signal. In actual applications, a suitable combination of anti-interference devices can be selected according to the actual situation of the equipment to achieve the best anti-interference effect.

[0033] The box 101 includes a metal outer layer 130, a metal inner layer 131 and an absorbing material 132. The metal outer layer 130 is fixedly connected to one side of the absorbing material 132, and the metal inner layer 131 is fixedly connected to the other side of the absorbing material 132. The metal outer layer 130 is used to directly shield electromagnetic interference from the external environment, and the metal inner layer 131 is used to assist the shielding layer to further enhance the overall shielding function. The absorbing material 132 between the metal inner layer 131 and the metal outer layer 130 is made of ferrite material to absorb the remaining electromagnetic waves that penetrate the outer layer to ensure an electromagnetic-free environment inside the box 101. The material of the metal outer layer 130 is a steel material plated with a conductive coating to form an effective electromagnetic shielding layer. These materials can reflect and absorb most of the external electromagnetic radiation to protect the internal equipment from interference.

[0034] The supporting leg 6 includes a supporting base plate 601, a supporting frame 602 and a grounding pipe 603. The supporting frame 602 is fixedly connected to the bottom of the box 101, the supporting base plate 601 is fixedly connected to the bottom of the supporting frame 602, the grounding pipe 603 is fixedly connected to the inside of the supporting frame 602, the top of the grounding pipe 603 passes through the box 101 and extends to the inside, an EMI filter is installed on the top of the grounding pipe 603 to filter out high-frequency interference signals to ensure that internal metal parts and all equipment that needs to be grounded are reliably grounded. Good grounding can effectively reduce common-mode interference and serve as a release path for internal electromagnetic waves to achieve anti-interference function. The width of the supporting base plate 601 is greater than the width of the box 101 to ensure that the device remains stable during use and ensure stable use of the equipment.

[0035] In summary, when the device is in use, the power equipment is installed inside the box 101 through the support rod 106, fixed on the ground with the support leg 6, and contacted with the ground by the grounding pipe 603 to achieve the grounding effect. After the power equipment, lines and anti-electromagnetic equipment 119 are installed, the box door 3 is closed, and the distribution box 1 starts to be used. The isolator in the internal anti-electromagnetic equipment 119 blocks the interference signal before it enters the equipment to prevent the interference signal from entering the equipment through the equivalent circuit. The shield is mainly used to prevent external interference signals from entering the equipment. The relay is used as a control in the anti-electromagnetic interference equipment. The control component is used to control the on and off of the anti-interference device to protect the power equipment from electromagnetic interference. The air inlet fan 104 cooperates with the exhaust fan 105 to circulate the air in the box 101, which has the effect of circulating heat dissipation. When the anti-electromagnetic device 119 needs to be inspected and repaired regularly, the positioning block 116 is pulled out through the handle 115, and then the driving motor 122 drives the rotating rod 121 to rotate, and the rotating rod 121 is removed from the mounting plate 117. Then the mounting plate 117 is removed, and the anti-electromagnetic device 119 installed on the mounting plate 117 can be inspected and maintained. The operation is simple and easy to use.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power distribution cabinet with anti-electromagnetic interference function, comprising a power distribution box (1), a hinge (2), a box door (3), a control key (4), a shielding top (5) and a supporting leg (6), characterized in that: The hinge (2) is arranged at one end of the distribution box (1), the box door (3) is arranged at the other end of the hinge (2), the control key (4) is installed on the outside of the box door (3), the shielding top (5) is fixedly connected to the top of the distribution box (1), and the supporting leg (6) is fixedly connected to the bottom of the distribution box (1); The distribution box (1) comprises a box body (101), a partition (102), an air duct (103), an air inlet fan (104), an exhaust fan (105), a support rod (106), a mounting frame (107) and an anti-electromagnetic interference component (108), wherein the partition (102) is fixedly connected to the inside of the box body (101), the air duct (103) is opened at two ends inside the partition (102), the air inlet fan (104) is mounted on one end of the bottom of the box body (101), the exhaust fan (105) is mounted on the other end of the bottom of the box body (101), the support rod (106) is fixedly connected to the inner wall of the box body (101), the mounting frame (107) is fixedly connected to one end of the support rod (106), and the anti-electromagnetic interference component (108) is mounted on one side of the inner wall of the box body (101).

2. The power distribution cabinet with anti-electromagnetic interference function according to claim 1, characterized in that: The anti-electromagnetic interference component (108) comprises a housing (110), a fixing plate (111), a top cover (112), a slide rail (113), a movable bottom plate (114), a handle (115), a positioning block (116), a mounting plate (117), a fixing mechanism (118) and an anti-electromagnetic device (119), wherein the housing (110) is fixedly connected to the inner wall of the box body (101), the fixing plate (111) is fixedly connected to both ends of the housing (110), the top cover (112) is fixedly connected to the top of the housing (110), and the slide rail (113) is fixedly connected to the movable bottom plate (114), the handle (115), a positioning block (116), a mounting plate (117), a fixing mechanism (118) and an anti-electromagnetic device (119). The rail (113) is fixedly connected to the two ends inside the housing (110), the movable base plate (114) is slidably connected to the outside of the slide rail (113), the handle (115) is fixedly connected to one side of the movable base plate (114), the positioning block (116) is fixedly connected to the top of the movable base plate (114), the mounting plate (117) is snap-connected to the inner side of the positioning block (116), the fixing mechanism (118) is arranged at the two ends of the mounting plate (117), and the anti-electromagnetic device (119) is installed on the top of the mounting plate (117).

3. The power distribution cabinet with anti-electromagnetic interference function according to claim 2, characterized in that: The fixing mechanism (118) comprises a mounting block (120), a rotating rod (121), a driving motor (122), a transmission member (123) and a linkage rod (124); the mounting block (120) is fixedly connected to the top of the movable base plate (114); the rotating rod (121) is rotatably connected to both ends of the mounting block (120); the driving motor (122) is fixedly connected to the inside of the mounting block (120); the transmission member (123) is arranged at one end of the driving motor (122); the other end of the transmission member (123) is connected to the rotating rod (121); and the linkage rod (124) is fixedly connected to the other end of the transmission member (123).

4. The power distribution cabinet with anti-electromagnetic interference function according to claim 3, characterized in that: The box body (101) comprises a metal outer layer (130), a metal inner layer (131) and an absorbing material (132); the metal outer layer (130) is fixedly connected to one side of the absorbing material (132), and the metal inner layer (131) is fixedly connected to the other side of the absorbing material (132).

5. The power distribution cabinet with anti-electromagnetic interference function according to claim 4, characterized in that: The mounting plate (117) comprises a plate body (140), a mounting groove (141) and a fixing hole (142); the four corners of the plate body (140) are right angles, the dimensions of the right angles being consistent with the inner dimensions of the positioning block (116) to ensure that the plate body (140) can be snap-fitted into the interior of the positioning block (116); the mounting groove (141) is provided at the top of the plate body (140).

6. The power distribution cabinet with anti-electromagnetic interference function according to claim 5, characterized in that: The air inlet fan (104) comprises a fan group (150), an air inlet pipe (151), a filter layer (152) and an exhaust pipe (153); the fan group (150) is fixedly connected to the bottom of the interior of the box (101); the air inlet pipe (151) is arranged at one end of the fan group (150); the filter layer (152) is arranged at one end of the air inlet pipe (151); and the exhaust pipe (153) is arranged at the top of the filter layer (152).

7. The power distribution cabinet with anti-electromagnetic interference function according to claim 6, characterized in that: The support leg (6) comprises a support base plate (601), a support frame (602) and a grounding pipe (603); the support frame (602) is fixedly connected to the bottom of the box (101); the support base plate (601) is fixedly connected to the bottom of the support frame (602); the grounding pipe (603) is fixedly connected to the inside of the support frame (602); and the top of the grounding pipe (603) passes through the box (101) and extends to the inside.

8. The power distribution cabinet with anti-electromagnetic interference function according to claim 7, characterized in that: The anti-electromagnetic device (119) comprises an anti-electromagnetic interference device, an isolator, a shield and a relay.

9. The power distribution cabinet with anti-electromagnetic interference function according to claim 8, characterized in that: There are two mounting plates (117), and two sets of anti-electromagnetic devices (119) are mounted on one mounting plate (117).

10. The power distribution cabinet with anti-electromagnetic interference function according to claim 9, characterized in that: The number of the support rods (106) is four, and they are evenly distributed inside the box (101).

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