Power cabinet convenient to maintain and maintenance protection device

Abstract

The invention relates to the technical field of electric power cabinets, in particular to an electric power cabinet convenient to maintain and a maintenance protection device, the electric power cabinet convenient to maintain comprises a base, the base is a bearing carrier of the device, a protection cabinet body is fixedly installed at the top of the base, and protection doors are hinged to the front side and the rear side of the protection cabinet body; the guide rail plate is arranged at the inner bottom of the protection cabinet body, and a guide rail is arranged on the top surface of the guide rail plate; and the electric cabinet body is arranged in the protection cabinet body in a sliding manner through a guide rail plate. Through the design of the guide rail plate and the sliding mechanism, the electric cabinet body can conveniently slide out of the protection cabinet body, a wider operation space is provided for maintenance personnel, and the design of the side door allows direct contact with internal elements, so that the maintenance efficiency is effectively improved, and during power-off maintenance, the maintenance time is shortened. A physical barrier is formed by the automatically-popped warning plate and the telescopic fence, so that non-authorized personnel are prevented from approaching, and the safety of maintenance personnel is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power cabinets, and more particularly, to a power cabinet and a maintenance protection device that are convenient for maintenance. Background Art

[0002] Power cabinets are important devices for distributing and controlling electric energy, and are widely used in industrial, commercial, and residential buildings. To ensure the safe and reliable operation of the power system, the design of power cabinets should not only consider their electrical performance, but also pay attention to the convenience and safety of maintenance. With the development of technology and the increasing demand for electricity, the role of power cabinets has become increasingly important. Traditional power cabinets usually focus on electrical performance in design and neglect the convenience of maintenance. When a power cabinet fails or needs to be repaired, workers may face problems such as inconvenient operation and dangerous working environments.

[0003] According to the patent with the authorization announcement number CN112952605B, a power cabinet for facilitating the maintenance of electrical equipment is disclosed, including a power cabinet body. A support block is fixedly connected to the top of the power cabinet body, and a shielding shed is fixedly connected to the top of the support block. A second gear is movably connected to the inner bottom of the power cabinet body. A first motor fixedly installed on the inner bottom of the power cabinet body is provided on the right side of the second gear. This power cabinet drives the electronic components on the top of the mounting plate to rotate through gears, so as to facilitate observing and discovering problems and performing repairs. However, during the actual repair process, due to the lack of a protection mechanism on the power cabinet, there are significant safety hazards during outdoor repairs. Moreover, due to the relatively complex internal structure of the power cabinet, daily inspections and maintenance become cumbersome, and the labor cost and time cost of maintenance are relatively long. Therefore, we have designed a power cabinet and a maintenance protection device that are convenient for maintenance, aiming to improve the safety and maintainability of the power distribution cabinet, and at the same time reduce the occurrence of accidents. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a power cabinet and a maintenance protection device that are convenient for maintenance, which can improve the safety and maintainability of the power distribution cabinet, and at the same time reduce the occurrence of accidents.

[0005] The technical solution is as follows: A power cabinet and a maintenance protection device that are easy to maintain, including a base and a protective cabinet body. The base is the load-bearing carrier of this device, and the protective cabinet body is fixedly installed on the top of the base. Protective doors are hinged on the front and rear sides of the protective cabinet body; further included are: a guide rail plate, arranged on the inner bottom of the protective cabinet body, and a guide rail is provided on the top surface of the guide rail plate; an electric cabinet body, slidably arranged in the protective cabinet body through the guide rail plate; a warning mechanism, the warning mechanism includes: two groups of guide frames, symmetrically fixed on the base, and the two ends of the guide frame are sleeve rods; two groups of sliding frames, respectively slidably installed on the corresponding guide frames on one side through guide rods, and the rod bodies at both ends of the sliding frame are slidably matched with the sleeve rods of the corresponding guide frames on the same side. A first spring is arranged on the guide rod between the guide frame and the sliding frame. The sliding frame, the guide rod and the corresponding first spring all slidably penetrate the side wall of the protective cabinet body. A buckle is arranged on the bottom surface of the guide rail plate for buckling and locking the sliding frame. When the sliding frame is locked on the guide frame, the first spring is in a compressed state. The end surface of the sliding frame away from the guide frame is a chute; sliding blocks, two sliding blocks are symmetrically and slidably installed in the chute of the same-side sliding frame; warning plates, slidably installed on each sliding block, and the warning plates are distributed on both sides of the protective cabinet body; a telescopic fence, installed between the two warning plates on the same side, and a second spring that provides an opening elastic force is arranged between the two warning plates. The telescopic fence is used to stably guide the two warning plates on the same side and form a protective fence on both sides of the protective cabinet body when opened, providing protection for the maintenance personnel who repair the electric cabinet body; limit plates, fixedly arranged on both sides of the top of the base, and the limit plates limit the warning plates on both sides of the protective cabinet body.

[0006] Preferably, the buckle includes a sleeve, an electromagnet and a metal wedge block. The sleeve is fixedly installed on the bottom surface of the guide rail plate. The bottom of the sleeve is open. An electromagnet in the shape of a rod is fixedly arranged inside the sleeve. The electromagnet is powered by the electric cabinet body. The magnetic end of the electromagnet is located at the opening of the sleeve. A metal wedge block is slidably sleeved inside the sleeve. A third spring is arranged between the metal wedge block and the sleeve. The magnetic force of the electromagnet attracting the metal wedge block is greater than the elastic force of the third spring. The third spring is initially in a stretched state. A card slot for cooperating with the metal wedge block is opened on the top surfaces of the guide frame and the sliding frame. The metal wedge block is positioned in the card slot of the sliding frame inside the guide frame, so that the sliding frame can be stably stored inside the guide frame when the electric cabinet is working normally.

[0007] Preferably, openings are provided on both the front and rear side walls of the cabinet body. Cabinet doors are symmetrically and hingedly installed at the openings on the front and rear sides of the cabinet body respectively. Through openings for hinging side doors are provided on the left and right side walls of the cabinet body of the cabinet. The through openings of the cabinet body facilitate maintenance personnel to directly perform maintenance from the side walls. A ventilation plate is provided at the inner bottom of the cabinet body, and the top of the cabinet body is a ventilation hood. By slidingly matching the cabinet body and the guide rail plate, the cabinet body can be moved and slid out from the front and rear side openings of the protective cabinet body according to the maintenance needs.

[0008] Preferably, a protection component is provided inside the cabinet body. The protection component includes: a reference frame, vertically and symmetrically fixedly installed on the inner wall of the cabinet body, and assembly bolt holes are provided on the reference frame; a guiding frame, with multiple groups provided and fixedly installed on the reference frame through bolts. Each group of guiding frames is divided into two on the left and right, and bolt holes are also provided thereon; a sliding plate, arranged between two guiding frames in each group, and the sliding plate is fixedly bolted between the corresponding guiding frames. Electrical components in the cabinet are assembled on the sliding plate, and the electrical components can flexibly adjust the assembled spatial position in the guiding frame through the sliding plate; an assembly plate, symmetrically installed at both ends of the sliding plate; a sliding rail, fixedly arranged at the front end of the assembly plate; an insulating plate, slidably installed between two corresponding sliding rails in the same group, and there is a sliding damping between the insulating plate and the sliding rail. The insulating plate is used to separate and protect the electrical components assembled on the sliding plate.

[0009] Preferably, circular protruding blocks are symmetrically and fixedly provided at the front part of the sliding plate, and clamping grooves adapted to the blocks are provided on the assembly plate. The assembly plate can be buckled onto the blocks of the sliding plate through the clamping grooves, so that the assembly plate can be flexibly installed and disassembled according to the maintenance needs, improving the convenience of maintaining the electrical components.

[0010] Preferably, a top frame and a sunshade frame are further included. The top frame is fixedly provided at the top of the protective cabinet body, and the sunshade frame is symmetrically and slidably assembled on the front and rear sides of the top frame. The sunshade frame can slide and open and be stored on the top frame. When maintenance personnel perform maintenance on the cabinet in sunny weather, the sunshade frame can be pulled outwards from the top frame for sunshading.

[0011] Preferably, an installation cylinder is fixedly installed inside the top frame of the protective cabinet body. The bottom opening of the installation cylinder is aligned correctly to assemble the ventilation hood at the top of the cabinet body. A heat dissipation fan is fixedly installed inside the installation cylinder. The heat dissipation fan is used to quickly discharge the heat generated by the electrical components inside the cabinet body. An exhaust passage communicating with the installation cylinder is provided inside the top frame, and an exhaust hood is provided at the air outlet of the exhaust passage. A one-way diaphragm is hingedly provided inside the exhaust passage, and a torsion spring is provided on the rotating shaft of the one-way diaphragm.

[0012] Preferably, an air inlet channel is further provided inside the top frame. An air inlet fan is installed in the air inlet channel. An air inlet hood is installed at the air inlet of the top frame. A filter box is also installed in the top frame of the protective cabinet body. A filter screen is provided inside the filter box. The air inlet of the air inlet channel faces the filter box. An air inlet pipe is opened on the filter box and leads to the interval channel between the protective cabinet body and the electric cabinet body. An air inlet is opened on the lower side wall of the electric cabinet body, and the air inlet of the electric cabinet body is located in the interval channel.

[0013] Advantages of the present invention: 1. Through the design of the guide rail plate and the sliding mechanism, the electric cabinet body can be conveniently slid out of the protective cabinet body, providing a more spacious operation space for maintenance personnel. The design of the side door allows direct access to the internal components, effectively improving the maintenance efficiency. When performing maintenance with power off, the automatically popped warning board and the telescopic fence form a physical barrier to prevent unauthorized personnel from approaching and ensure the safety of maintenance personnel.

[0014] 2. By adopting the sliding plate and the guide frame, the electrical components can be adjusted in position according to needs, not only optimizing the space utilization, but also increasing flexibility and facilitating subsequent maintenance work.

[0015] 3. The sunshade frame on the top frame can provide shade for maintenance personnel in sunny weather, improving the maintenance experience of maintenance personnel for the power cabinet. In addition, the combination of the cooling fan, the air inlet fan and the filtering system can effectively improve the internal environment and extend the service life of the electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 is a schematic diagram of the unfolded state of the warning mechanism on the protective cabinet body of the present invention.

[0018] Figure 3 is a schematic diagram of the connection relationship between the guide frame, the sliding frame, the warning board and the buckle member of the present invention.

[0019] Figure 4 is a three-dimensional structural schematic diagram of the specific components of the guide frame, the sliding frame and the buckle member of the present invention.

[0020] Figure 5 is a schematic diagram of the state where the electric cabinet body slides out of the protective cabinet body of the present invention.

[0021] Figure 6 is a schematic diagram of the components such as the electric cabinet body, the cabinet door, the side door and the protective component of the present invention.

[0022] Figure 7This is a connection diagram of components such as the reference frame, guide frame, and insulating plate of the present invention.

[0023] Figure 8 This is a three-dimensional structure schematic diagram of the specific components of the protection component of the present invention.

[0024] Figure 9 This is a three-dimensional structure schematic diagram of the top frame, mounting cylinder, cooling fan, and exhaust air channel of the present invention.

[0025] Figure 10 This is a three-dimensional structure schematic diagram of the exhaust air channel, exhaust air hood, and one-way diaphragm of the present invention.

[0026] Figure 11 This is a schematic diagram of components such as the air intake channel, air intake fan, air intake hood, and filter box of the present invention.

[0027] Explanation of reference numerals: 1: Base, 2: Protection cabinet body, 21: Guide rail plate, 3: Protection door, 4: Electric cabinet body, 41: Cabinet door, 42: Side door, 43: Ventilation plate, 44: Ventilation hood, 45: Air inlet, 5: Warning mechanism, 51: Guide frame, 52: Sliding frame, 521: Guide rod, 522: First spring, 53: Sliding block, 54: Warning plate, 55: Retractable fence, 56: Second spring, 57: Limit plate, 6: Buckling member, 61: Sleeve, 62: Electromagnet, 63: Metal wedge block, 64: Third spring, 7: Protection component, 71: Reference frame, 72: Guide frame, 73: Sliding plate, 731: Block, 74: Assembly plate, 75: Slide rail, 76: Insulating plate, 8: Top frame, 9: Sunshade frame, 10: Mounting cylinder, 101: Cooling fan, 11: Exhaust air channel, 111: Exhaust air hood, 12: One-way diaphragm, 13: Air intake channel, 131: Air intake fan, 132: Air intake hood, 133: Filter box, 134: Air intake pipe. Detailed implementation manners

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Embodiment 1: A power cabinet and a maintenance protection device that are convenient for maintenance, as Figures 1-4As shown, it includes a base 1 and a protective cabinet body 2. The base 1 is the load-bearing carrier of this device, and the protective cabinet body 2 is fixedly installed on the top of the base 1. Protective doors 3 are hinged on the front and rear sides of the protective cabinet body 2; it also includes: a guide rail plate 21, which is arranged at the inner bottom of the protective cabinet body 2, and a guide rail is provided on the top surface of the guide rail plate 21; an electric cabinet body 4, which is slidably arranged in the protective cabinet body 2 through the guide rail plate 21; a warning mechanism 5, and the warning mechanism 5 includes: a guide frame 51, which is symmetrically arranged on the left and right sides of the base 1. The front and rear ends of the guide frame 51 are sleeve rods; there are two sliding frames 52, which are respectively slidably installed on the corresponding guide frame 51 on one side through a guide rod 521. The two end rods of the sliding frame 52 are slidably matched with the sleeve rods of the corresponding guide frame 51 on the same side. A first spring 522 is arranged on the guide rod 521 between the guide frame 51 and the sliding frame 52. The sliding frame 52, the guide rod 521 and the corresponding first spring 522 all slide through the side wall of the protective cabinet body 2. A buckle 6 for buckling and locking the sliding frame 52 is provided on the bottom surface of the guide rail plate 21. When the sliding frame 52 is locked on the guide frame 51, the first spring 522 is in a compressed state. The end face of the sliding frame 52 away from the guide frame 51 is a chute; sliding blocks 53 are symmetrically slidably installed in the chute of the sliding frame 52 on the same side before and after; a warning board 54 is slidably installed on each sliding block 53, and the warning boards 54 are distributed on both sides of the protective cabinet body 2; a telescopic fence 55 is installed between the two warning boards 54 on the same side. A second spring 56 that provides an opening elastic force is arranged between the two warning boards 54. The telescopic fence 55 is used to smoothly guide the two warning boards 54 on the same side and form a protective fence on both sides of the protective cabinet body 2 when opened, providing protection for the maintenance personnel who repair the electric cabinet body 4; a limiting plate 57 is fixedly arranged on the front and rear sides of the top of the base 1. The limiting plate 57 limits the warning boards 54 on both sides of the protective cabinet body 2, so that the warning boards 54 compress the second spring 56 and are received between the limiting plates 57 on the top of the base 1. When performing power-off maintenance, the two warning boards 54 will slide out of the limiting plate 57, and then under the action of the second spring 56, the warning boards 54 and the telescopic fence 55 will pop out and open to both sides, thus providing a protection and warning effect during the maintenance of the power cabinet.

[0030] As Figure 3 and Figure 4As shown, the buckle 6 includes a sleeve 61, an electromagnet 62 and a metal wedge block 63. The sleeve 61 is fixedly installed on the bottom surface of the guide plate 21. The bottom of the sleeve 61 is an opening. A rod-shaped electromagnet 62 is fixed inside the sleeve 61. The electromagnet 62 is powered by the electric cabinet body 4. The magnetic end of the electromagnet 62 is located at the opening of the sleeve 61. A metal wedge block 63 is slidably sleeved inside the sleeve 61. A spring 3 64 is provided between the metal wedge block 63 and the sleeve 61. The magnetic force of the electromagnet 62 to absorb the metal wedge block 63 is greater than the elastic force of the spring 3 64. The spring 3 64 is initially in a stretched state. The top surfaces of the guide frame 51 and the sliding frame 52 are provided with slots for matching the metal wedge block 63. The metal wedge block 63 is positioned in the slot of the sliding frame 52 inside the guide frame 51, so that the sliding frame 52 can be stably stored inside the guide frame 51 when the electric cabinet is working normally. When the electric cabinet is powered off for maintenance, the electromagnet 62 no longer absorbs the metal wedge block 63, so that the metal wedge block 63 is pulled upward under the elastic force of the spring three 64, so that the metal wedge block 63 is released from the lock on the sliding frame 52 inside the guide frame 51, so that the sliding frame 52 can pop out from the guide frame 51 to both sides under the action of the spring one 522.

[0031] When the electric cabinet body 4 is in normal operation, the electric cabinet body 4 is slidably arranged inside the protective cabinet body 2 through the guide rail plate 21, and the stability and safety of the electric cabinet body 4 are ensured by the protective cabinet body 2. At this time, the electric cabinet body 4 supplies power to the electromagnet 62. When the electromagnet 62 is energized, a magnetic force is generated at the lower end and the metal wedge block 63 is attracted downward, so that the metal wedge block 63 overcomes the elastic force of the spring three 64 and is downwardly inserted into the card slot of the guide frame 51 and the sliding frame 52, ensuring that the sliding frame 52 is firmly received in the guide frame 51. At this time, the spring one 522 is in a compressed state, the warning mechanism 5 remains in a retracted state, and the telescopic fence 55 and the warning plate 54 are received between the limit plates 57 at the top of the base 1, which does not affect the daily operation of the power cabinet. When it is necessary to power off the electric cabinet body 4 for maintenance, the power supply of the electric cabinet body 4 will be cut off first. When the power is cut off, the electromagnet 62 will lose its magnetism after it is no longer energized after the power is cut off. At this time, the electromagnet 62 will no longer attract the metal wedge block 63. The metal wedge block 63 will move upward under the action of the spring three 64, and at the same time, it will be separated from the corresponding slots of the guide frame 51 and the sliding frame 52, thereby releasing the lock of the sliding frame 52. Then, the sliding frame 52 pops up to both sides under the elastic force of the spring one 522. When the warning plate 54 on the sliding frame 52 pops up to both sides and is separated from the limit plates 57 on both sides, the warning plate 54 will open outward under the compression force of the spring two 56. At the same time, the warning plate 54 will drive the telescopic fence 55 to expand accordingly, and form a protective fence on both sides of the protective cabinet 2, providing obvious visual warnings and protecting maintenance personnel from accidental injuries, thereby improving the safety of maintenance personnel in maintaining the electrical cabinet body 4.

[0032] like Figure 5 and Figure 6As shown, openings are provided on the front and rear side walls of the electric cabinet body 4. Cabinet doors 41 are symmetrically and hingedly installed at the openings on the front and rear sides of the electric cabinet body 4 respectively. Through openings for hinging side doors 42 are provided on the left and right side walls of the cabinet body of the electric cabinet body 4. The through openings of the electric cabinet body 4 facilitate maintenance personnel to directly perform maintenance from the side walls. A ventilation plate 43 is arranged at the inner bottom of the electric cabinet body 4, and the top of the electric cabinet body 4 is a ventilation hood 44. By slidingly matching the electric cabinet body 4 with the guide rail plate 21, the electric cabinet body 4 can be moved and slid out from the front and rear side openings of the protective cabinet body 2 according to the maintenance needs, providing a more spacious maintenance space. Cooperating with opening the side door 42 on the electric cabinet body 4, electrical components that are not easily operable in the corners inside the electric cabinet body 4 can also be directly exposed to the outside, facilitating convenient operation by maintenance personnel.

[0033] As Figure 6 and Figure 7 As shown, a protection component 7 is arranged inside the electric cabinet body 4. The protection component 7 includes: a reference frame 71, vertically and symmetrically fixedly installed on the inner wall of the electric cabinet body 4, and assembly bolt holes are provided on the reference frame 71; a guide frame 72, there are multiple groups of which are fixedly installed on the reference frame 71 by bolts. Each group of guide frames 72 is divided into two on the left and right and bolt holes are also provided thereon; a sliding plate 73, arranged between two guide frames 72 in each group. The sliding plate 73 is fixed between the corresponding guide frames 72 by bolts. Electrical components in the electric cabinet are assembled on the sliding plate 73, and the electrical components can flexibly adjust the assembled spatial position in the guide frame 72 through the sliding plate 73; assembly plates 74, symmetrically installed at both ends of the sliding plate 73; slide rails 75, fixedly arranged at the front end of the assembly plate 74; an insulating plate 76, slidably installed between two corresponding slide rails 75 in the same group. There is a sliding damping between the insulating plate 76 and the slide rails 75. The insulating plate 76 is used to separate and protect the electrical components assembled on the sliding plate 73. During maintenance, according to the actual position of the electrical components to be maintained, the insulating plate 76 is flexibly slid on the slide rails 75, so that the insulating plate 76 can always block and protect the unmaintained end of the electrical components, reducing the occurrence of accidental touch.

[0034] As Figure 7 and Figure 8 As shown, circular blocks 731 protruding symmetrically are fixedly arranged at the front part of the sliding plate 73. A clamping groove adapted to the block 731 is provided on the assembly plate 74. The assembly plate 74 can be buckled to the block 731 of the sliding plate 73 through the clamping groove, so that the assembly plate 74 can be flexibly assembled and disassembled according to the maintenance needs, improving the convenience of maintaining electrical components.

[0035] When repairing the protective cabinet body 2, according to the actual repair position of the electrical components in the electrical cabinet body 4, select to slide out the protective cabinet body 2 from the front or rear opening of the protective cabinet body 2 along the guide rail plate 21, creating a wider operating space for maintenance personnel. When the electrical cabinet body 4 is removed from the protective cabinet body 2, not only can the front and rear cabinet doors 41 of the electrical cabinet body 4 be directly opened for repair, but also the side door 42 on the side wall of the electrical cabinet body 4 can be opened, enabling maintenance personnel to directly inspect the electrical components at the corners of the inner side wall through the through opening at the side door 42, greatly improving the accessibility and working efficiency of the electrical cabinet body 4. Since the sliding plate 73 is located between each pair of guide frames 72 and is connected to the guide frame 72 by bolts, the sliding plate 73 can more stably carry the electrical components, and at the same time allows users to adjust the spatial position of the electrical components according to needs, enabling the electrical components to obtain the best layout in a limited space, thereby improving the utilization rate of the internal space of the electrical cabinet and the wiring efficiency. At the same time, through the sliding fit of the insulating plate 76 and the corresponding slide rail 75, due to the existence of a certain sliding damping, the insulating plate 76 can stay stably at any position within the stroke without being affected by external forces. When maintenance personnel need to repair a specific electrical component, they can slide the insulating plate 76 according to actual needs to block the electrical components that do not need to be directly contacted, thereby avoiding accidental contact with the un-repaired end and reducing the risk of accidents to ensure operation safety.

[0036] Embodiment 2: On the basis of Embodiment 1, as Figure 1 and Figure 2 shown, it further includes a top frame 8 and a sunshade frame 9. The top of the protective cabinet body 2 is fixedly provided with a top frame 8, and the front and rear sides of the top frame 8 are symmetrically slidably assembled with a sunshade frame 9. The sunshade frame 9 can slide and open and be stored on the top frame 8. When maintenance personnel repair the electrical cabinet in sunny weather, the sunshade frame 9 can be pulled outwards from the top frame 8 for sunshading.

[0037] As Figure 2 , Figure 9 and Figure 10 shown, an installation cylinder 10 is fixedly installed inside the top frame 8 of the protective cabinet body 2. The bottom opening of the installation cylinder 10 is aligned to correctly assemble the ventilation hood 44 at the top of the electrical cabinet body 4. A heat dissipation fan 101 is fixedly installed inside the installation cylinder 10. The heat dissipation fan 101 is used to quickly discharge the heat generated by the electrical components in the electrical cabinet body 4. An exhaust passage 11 communicating with the installation cylinder 10 is provided inside the top frame 8. An exhaust hood 111 is provided at the air outlet of the exhaust passage 11. A one-way diaphragm 12 is hinged inside the exhaust passage 11. A torsion spring is provided on the rotating shaft of the one-way diaphragm 12. When the heat dissipation fan 101 does not blow air outwards for heat dissipation, the one-way diaphragm 12 can block at the exhaust passage 11 under the action of the torsion spring. The one-way diaphragm 12 blocks and prevents external foreign objects and moisture from entering the exhaust passage 11 while ensuring normal heat dissipation.

[0038] When maintenance personnel need to repair the electric cabinet in hot sun, they can pull out the symmetrically sliding sunshade frames 9 on both sides outward from the top frame 8, forming a temporary sunshade structure on the electric cabinet body 4 through the sunshade frames 9, providing shade for the repair work, reducing the impact of direct sunlight on the maintenance personnel. When the power cabinet is working normally, in order to effectively manage the temperature inside the electric cabinet, the cooling fan 101 is enabled. The cooling fan 101 can quickly take out the heat generated by the internal electrical components of the electric cabinet. The cooling fan 101 discharges the hot air through the exhaust channel 11 and finally leaves the electric cabinet from the exhaust hood 111. When the cooling fan 101 stops running, the one-way diaphragm 12 will automatically close the exhaust channel 11 under the action of the torsion spring, preventing external foreign objects or moisture from entering, ensuring the cleanliness and safety of the channel, thus ensuring the normal heat dissipation of the power cabinet and protecting the inside of the electric cabinet from the external environment.

[0039] As Figures 9-11 shown, an air inlet channel 13 is also provided inside the top frame 8. An air inlet fan 131 is installed in the air inlet channel 13. An air inlet hood 132 is installed at the air inlet of the top frame 8. A filter box 133 is also installed in the top frame 8 of the protective cabinet body 2. A filter screen is provided inside the filter box 133. The air inlet of the air inlet channel 13 faces the filter box 133. An air inlet pipe 134 is opened on the filter box 133, and the air inlet pipe 134 leads to the interval channel between the protective cabinet body 2 and the electric cabinet body 4. An air inlet 45 is opened on the lower side wall of the electric cabinet body 4, and the air inlet 45 of the electric cabinet body 4 is located in the interval channel. The external air is drawn into the air inlet channel 13 by the air inlet fan 131. The drawn air is filtered when flowing through the filter box 133 and then discharged from the air inlet pipe 134. The discharged air will pass through the interval channel between the protective cabinet body 2 and the electric cabinet body 4 and flow into the electric cabinet body 4 from the air inlet 45 of the electric cabinet body 4, cooperating with the ventilation hood 44 at the top of the electric cabinet body 4 by the cooling fan 101 to perform exhaust heat dissipation, so as to achieve the circulation of air flow inside the electric cabinet body 4, improve the service life of the internal electrical components assembled in the electric cabinet body 4, and improve the safety and stability of the electric cabinet.

[0040] Meanwhile, by enabling the intake fan 131 to actively suck in external air, the air flow is guided into through the air intake hood 132. At the same time, the air flow entering the air intake channel 13 will flow through the filter box 133 and then be filtered by the filter box 133. After the guided air flow is filtered by the filter box 133, it is then directed through the air intake pipe 134 into the interval channel between the protection cabinet body 2 and the electrical cabinet body 4, and finally flows into the electrical cabinet through the air intake port 45 on the side wall of the electrical cabinet body 4. Thus, through the coordinated operation of the intake fan 131 and the cooling fan 101, a complete air flow circulation path is formed within the electrical cabinet body 4, that is, the external fresh air enters the electrical cabinet body 4 from the bottom after being filtered and is then extracted by the cooling fan 101 at the top of the electrical cabinet body 4, thereby achieving effective cooling inside the electrical cabinet, improving the working efficiency and stability of electrical components, and at the same time increasing the overall safety of the electrical cabinet.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A power cabinet and maintenance protection device that is easy to maintain, comprising a base (1) and a protective cabinet body (2), wherein the protective cabinet body (2) is fixedly mounted on the top of the base (1), and the front and rear sides of the protective cabinet body (2) are both hingedly provided with protective doors (3); It is characterized in that Also includes: A guide rail plate (21) is arranged on the inner bottom of the protective cabinet (2); An electric cabinet body (4) is slidably arranged in the protective cabinet body (2) via a guide plate (21); A warning mechanism (5), wherein the warning mechanism (5) comprises: The guide frames (51) are provided in two groups and are symmetrically fixed on the base (1); The sliding frame (52) is provided with two groups and is respectively slidably mounted on the guide frame (51) on the corresponding side through a guide rod (521); the sliding frame (52) is slidably matched with the corresponding guide frame (51) on the same side; a spring (522) is provided on the guide rod (521) between the guide frame (51) and the sliding frame (52); the sliding frame (52), the guide rod (521) and the corresponding spring (522) all slide through the side wall of the protective cabinet (2); a buckle (6) for buckling and locking the sliding frame (52) is provided on the bottom surface of the guide plate (21); and the end surface of the sliding frame (52) away from the guide frame (51) is a slide groove; Sliding blocks (53), two sliding blocks (53) are symmetrically slidably mounted in the sliding groove of the sliding frame (52) on the same side; A warning plate (54) is slidably mounted on each of the sliding blocks (53), and the warning plate (54) is distributed on both sides of the protective cabinet (2); A telescopic fence (55) is installed between two warning plates (54) on the same side, and a second spring (56) is provided between the two warning plates (54); The limiting plates (57) are fixedly mounted on both sides of the top of the base (1) and are used to limit the warning plates (54) on both sides.

2. The power cabinet and maintenance protection device easy to maintain according to claim 1, characterized in that: The fastener (6) comprises a sleeve (61), an electromagnet (62) and a metal wedge block (63). The sleeve (61) is fixedly mounted on the bottom surface of the guide rail plate (21). The sleeve (61) has an electromagnet (62) fixedly arranged inside. The electromagnet (62) is powered by the electric cabinet body (4). The magnetic end of the electromagnet (62) is located at the opening of the sleeve (61). The sleeve (61) is slidably sleeved with a metal wedge block (63). A spring (64) is arranged between the metal wedge block (63) and the sleeve (61). The magnetic force of the electromagnet (62) to attract the metal wedge block (63) is greater than the elastic force of the spring (64). The top surfaces of the guide frame (51) and the sliding frame (52) are provided with a slot for matching the metal wedge block (63).

3. The power cabinet and maintenance protection device easy to maintain according to claim 2, characterized in that: The front and rear side walls of the electric cabinet body (4) are both provided with openings, and cabinet doors (41) are symmetrically hingedly installed at the front and rear side openings of the electric cabinet body (4), and openings for hinged side doors (42) are provided on the left and right side walls of the cabinet body of the electric cabinet body (4). A ventilation plate (43) is provided at the inner bottom of the electric cabinet body (4), and a ventilation hood (44) is provided at the top of the electric cabinet body (4).

4. The power cabinet and maintenance protection device easy to maintain according to claim 3 is characterized in that: A protective component (7) is provided inside the electrical cabinet body (4), and the protective component (7) comprises: A reference frame (71) is vertically symmetrically fixedly mounted on the inner wall of the electric cabinet body (4), and the reference frame (71) is provided with mounting bolt holes; A plurality of guide frames (72) are provided and fixedly mounted on the reference frame (71) by bolts, wherein each guide frame (72) is divided into two left and right guide frames and each guide frame (72) is provided with bolt holes; A sliding plate (73) is disposed between each group of two guide frames (72), wherein the sliding plate (73) is fixed between the corresponding guide frames (72) by means of bolts; An assembly plate (74) symmetrically mounted on two ends of the sliding plate (73); A slide rail (75) fixedly mounted on the front end of the assembly plate (74); The insulating plate (76) is slidably mounted between two corresponding slide rails (75) of the same group. Sliding damping exists between the insulating plate (76) and the slide rail (75). The insulating plate (76) is used to separate and protect the electrical components assembled on the slide plate (73).

5. The power cabinet and maintenance protection device easy to maintain according to claim 4, characterized in that: A protruding circular clamping block (731) is symmetrically fixedly provided on the front of the sliding plate (73), and a clamping groove adapted to fit the clamping block (731) is provided on the assembly plate (74).

6. The power cabinet and maintenance protection device easy to maintain according to claim 5, characterized in that: It also includes a top frame (8) and a sunshade frame (9); the top frame (8) is fixedly provided on the top of the protective cabinet (2); and the sunshade frame (9) is symmetrically slidably mounted on the front and rear sides of the top frame (8).

7. The power cabinet and maintenance protection device easy to maintain according to claim 6, characterized in that: A mounting tube (10) is fixedly installed inside the top frame (8) of the protective cabinet body (2), the bottom opening of the mounting tube (10) is aligned with the ventilation cover (44) on the top of the electric cabinet body (4) for correct assembly, a cooling fan (101) is fixedly installed inside the mounting tube (10), an exhaust passage (11) connected to the mounting tube (10) is provided inside the top frame (8), an exhaust cover (111) is provided at the air outlet of the exhaust passage (11), a one-way diaphragm (12) is hingedly provided inside the exhaust passage (11), and a torsion spring is provided on the rotating shaft of the one-way diaphragm (12).

8. The power cabinet and maintenance protection device easy to maintain according to claim 7, characterized in that: An air inlet channel (13) is also provided inside the top frame (8), an air inlet fan (131) is installed inside the air inlet channel (13), an air inlet cover (132) is installed at the air inlet of the top frame (8), a filter box (133) is also installed inside the top frame (8) of the protective cabinet (2), a filter screen is provided inside the filter box (133), air inlet from the air inlet channel (13) is directed toward the filter box (133), an air inlet pipe (134) is provided on the filter box (133), the air inlet pipe (134) leads to the spacing channel between the protective cabinet (2) and the electric cabinet body (4), an air inlet port (45) is provided on the lower side wall of the electric cabinet body (4), and the air inlet port (45) of the electric cabinet body (4) is located in the spacing channel.

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