Sealing plate type rear cabinet door of centrally installed switchgear

Abstract

The utility model relates to the technical field of centrally-installed switch cabinets, and provides a centrally-installed switch cabinet sealing plate type rear cabinet door which comprises a sealing plate door arranged on a rear door frame and used for sealing the rear door frame. The sealing plate door comprises an upper door plate which is arranged at one end of the rear door frame; the lower door plate is arranged at the other end of the rear door frame. According to the technical scheme, the problem that the subsequent operation and maintenance work of the switch cabinet is inconvenient due to the fact that an open-type rear door is difficult to install on the rear door of the switch cabinet due to the limitation of use places in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of center-mounted switch cabinets, and in particular to a center-mounted cabinet with a closed-plate rear cabinet door. Background Art

[0002] Switchgear plays an indispensable role in power systems. Many companies, driven by their specific power requirements, are choosing prefabricated switchgear to replace traditional distribution rooms. For companies with less stringent power requirements, prefabricated switchgear offer numerous advantages, such as a relatively short construction period and high flexibility, enabling them to meet the company's rapid power needs. However, the size of prefabricated switchgear is limited, which presents some practical challenges.

[0003] One prominent issue is the installation of switchgear rear doors. Due to space limitations within the prefabricated cabin, it's often difficult to install an opening rear door. Opening rear doors serve multiple functions in normal switchgear operation, such as facilitating equipment inspection, maintenance, and troubleshooting. Failure to install an opening rear door can cause inconvenience and increase the difficulty and cost of subsequent switchgear operations. Furthermore, from a safety perspective, the lack of a suitable rear door structure can hinder the ability to quickly resolve internal switchgear faults in emergencies, potentially posing a threat to the stability and safety of the entire power supply system. Utility Model Content

[0004] The utility model proposes a closed-plate rear door for a center cabinet, which solves the problem in the related art that it is difficult to install an openable rear door on the rear door of the switch cabinet due to restrictions on the location of use, causing inconvenience to the subsequent operation and maintenance of the switch cabinet.

[0005] The technical solution of the utility model is as follows:

[0006] A center cabinet closed-plate rear cabinet door, used to close the center cabinet rear door frame, includes a closed-plate door, the closed-plate door is arranged on the rear door frame, and is used to close the rear door frame, the closed-plate door includes:

[0007] an upper door panel, the upper door panel being arranged at one end of the rear door frame;

[0008] A lower door panel is arranged at the other end of the rear door frame.

[0009] Optionally, the cover door is mounted on the rear door frame by bolts.

[0010] Optionally, the upper door panel and the lower door panel both have a plurality of gourd holes for installing the bolts.

[0011] Optionally, it also includes:

[0012] A pressing plate, one end of which is arranged on the upper door panel close to one end of the lower door panel, and the other end of which abuts against the lower door panel after the upper door panel and the lower door panel are installed.

[0013] Optionally, it also includes:

[0014] an upper reinforcing rib, the upper reinforcing rib being arranged on the upper door panel;

[0015] A lower reinforcing rib is provided on the lower door panel.

[0016] Optionally, it also includes:

[0017] There are several handles, and the handles are respectively arranged on the upper door panel and the lower door panel.

[0018] Optionally, the upper door panel and the lower door panel both have a plurality of positioning holes, further comprising:

[0019] An electromagnetic lock mounting seat is provided on the rear door frame and is located near one end of the lower door panel. After the lower door panel is installed, the electromagnetic lock mounting seat is located in the positioning hole.

[0020] A lighting lamp mounting seat is arranged on the rear door frame and is located near one end of the lower door panel. After the lower door panel is installed, the lighting lamp mounting seat is located in the other positioning hole.

[0021] Optionally, both the upper door panel and the lower door panel have a plurality of air holes.

[0022] Optionally, several fasteners are further included, including:

[0023] There are two mounting rods, one end of each of the mounting rods is arranged on the rear door frame, and the lower door panel and the upper door panel have a plurality of mounting holes, and the other end of the mounting rod passes through the mounting holes;

[0024] A pressing plate, after the upper door panel or the lower door panel abuts against the rear door frame, the two ends of the pressing plate are respectively sleeved on the two adjacent mounting rods, the other end of the mounting rod extends out of the pressing plate, and both ends of the other side of the pressing plate have pressing grooves;

[0025] An eccentric block is eccentrically rotated and arranged at the other end of the mounting rod. One end of the eccentric block has a pressing portion and the other end has a gripping portion. After the eccentric block rotates, the pressing groove abuts against the pressing portion.

[0026] Optionally, the fastener further comprises:

[0027] The eccentric block is rotatably arranged at one end of the mounting rod away from the rear door frame via the rotating shaft.

[0028] The working principle and beneficial effects of the utility model are as follows:

[0029] In the present utility model, in order to solve the problem in the related art that it is difficult to install an open rear door on the rear door of the switch cabinet due to the limitation of the place of use, which brings inconvenience to the subsequent operation and maintenance of the switch cabinet, a closed-plate rear door of the center cabinet is designed. When installing the closed-plate rear door of the center cabinet in the prefabricated cabin, it is first necessary to ensure that the space in the prefabricated cabin can accommodate the installation of the center cabinet and the closed-plate rear door. Due to the limited space in the prefabricated cabin, the dimensions of the center cabinet rear door frame and the closed-plate rear door need to be accurately measured before installation to ensure that the two match. Align the closed-plate door with the center cabinet rear door frame. Ensure that the closed-plate door accurately covers the rear door frame.

[0030] The advantage lies in the split design of the upper and lower door panels, which makes the door panels more convenient to produce, transport, and install. During production, split door panels are easier to process and manufacture, which improves production efficiency. During transportation, split door panels occupy relatively less space, reducing transportation costs and difficulty. During installation, split door panels are easier to operate and install in confined spaces such as prefabricated cabins. Where space is limited in prefabricated cabins, closed-panel doors can be installed smoothly, resolving the issue of being unable to install an opening rear door. Its structural design adapts to the spatial characteristics of prefabricated cabins, eliminating the need for a large opening and effectively utilizing limited space resources. The installation of closed-panel doors improves the overall safety of the switchgear within the prefabricated cabin. It prevents external factors such as dust, moisture, and small animals from entering the switchgear interior, thus avoiding equipment failures and safety accidents caused by these factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0032] Figure 1 This is a schematic diagram of the structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0034] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0035] In the figure: 1. rear door frame, 2. sealing door, 201. upper door panel, 202. lower door panel, 3. pressure plate, 4. upper reinforcing rib, 5. lower reinforcing rib, 6. handle, 203. positioning hole, 7. electromagnetic lock mounting seat, 8. lighting lamp mounting seat, 204. ventilation hole, 9. fastener, 901. mounting rod, 902. pressing plate, 9021. pressing groove, 903. eccentric block, 9031. pressing part, 9032. gripping part, 904. rotating shaft. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0037] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0038] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0039] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] Reference Figures 1 to 3 , which is the first embodiment of the utility model, proposes a center cabinet sealing plate type rear cabinet door, which is used to close the center cabinet rear door frame 1, including a sealing plate door 2, which is arranged on the rear door frame 1 and is used to close the rear door frame 1. The sealing plate door 2 includes an upper door panel 201, which is arranged at one end of the rear door frame 1; the lower door panel 202 is arranged at the other end of the rear door frame 1.

[0041] In this embodiment, in order to solve the problem in the related art that it is difficult to install an open rear door on the rear door of the switch cabinet due to limitations on the location of use, which causes inconvenience to the subsequent operation and maintenance of the switch cabinet, a closed-plate rear door of the center cabinet is designed. When installing the closed-plate rear door of the center cabinet in the prefabricated cabin, you must first ensure that the space in the prefabricated cabin can accommodate the installation of the center cabinet and the closed-plate rear door. Due to the limited space in the prefabricated cabin, the dimensions of the center cabinet rear door frame and the closed-plate rear door must be accurately measured before installation to ensure that the two match. Align the closed-plate door 2 with the center cabinet rear door frame 1. Ensure that the closed-plate door 2 accurately covers the rear door frame 1.

[0042] The advantage is that the split design of the upper door panel 201 and the lower door panel 202 makes the door panels more convenient during production, transportation and installation. During the production process, the split door panels are easier to process and manufacture, which can improve production efficiency. During transportation, the split door panels take up relatively less space, reducing transportation costs and difficulty. During installation, the split door panels are easier to operate and install in limited spaces such as prefabricated cabins. When the space in the prefabricated cabin is limited, the sealing door 2 can be installed smoothly, solving the problem caused by the inability to install an open rear door. Its structural design adapts to the spatial characteristics of the prefabricated cabin, does not require a large opening space, and effectively utilizes limited space resources. The installation of the sealing door 2 improves the overall safety of the switch cabinet in the prefabricated cabin. It can prevent external factors such as dust, moisture, small animals, etc. from entering the interior of the switch cabinet, avoiding equipment failures and safety accidents caused by these factors.

[0043] Furthermore, the cover door 2 is mounted on the rear door frame 1 by means of bolts.

[0044] In this embodiment, bolts of appropriate specifications are selected based on the material and thickness of the rear door frame 1 and the cover door 2, as well as the forces they need to withstand. For example, if the rear door frame 1 and the cover door 2 are thick and need to withstand greater external forces such as possible vibration or collision, bolts with larger diameters and higher strength are selected.

[0045] Pre-mark the bolt hole locations on the rear door frame 1 and the cover door 2. Use a template or measuring tool to ensure the accuracy of the hole positions so that the bolts can pass through smoothly.

[0046] Insert the bolts through the corresponding holes on the cover door 2 and the rear door frame 1 in sequence. When inserting the bolts, pay attention to the direction of the bolts and ensure that the bolt heads are on the appropriate side. For example, the bolt heads are usually placed on the outside of the cover door 2 to facilitate subsequent tightening operations and aesthetics.

[0047] The advantage is that the bolt connection securely fastens the cover door 2 to the rear door frame 1. The bolts provide sufficient clamping force to prevent the cover door 2 from loosening or falling off, even under vibration, external impact, or prolonged use. This is crucial for maintaining the closed and secure nature of the switchgear rear door.

[0048] Furthermore, both the upper door panel 201 and the lower door panel 202 have a plurality of gourd holes for installing bolts.

[0049] In this embodiment, during the production of upper door panel 201 and lower door panel 202, the size and shape of the gourd-shaped holes are designed based on the bolt specifications and installation requirements. A gourd-shaped hole typically consists of a large hole and a small hole. The diameter of the large hole is typically 2-3 mm larger than the diameter of the bolt head to facilitate smooth passage of the bolt head, while the diameter of the small hole matches the diameter of the bolt shank to ensure a secure and secure bolt.

[0050] When installing the upper door panel 201 and the lower door panel 202, first insert the bolt head through the large hole of the gourd hole, then move the door panel to the appropriate position, align the bolt shaft with the small hole of the gourd hole, and then tighten the bolt. This gourd hole design makes the installation process more convenient, especially in confined spaces such as prefabricated cabins, where bolts can be more easily manipulated for installation.

[0051] The gourd-shaped hole design facilitates bolt installation. The bolt head can be quickly inserted through the large hole, and then accurately secured through the small hole, reducing installation time and difficulty while improving installation efficiency. The gourd-shaped hole design accommodates bolts of varying sizes. As long as the bolt head fits through the large hole and the shank fits within the small hole, it can be used. This improves the versatility of door panel connections with various bolt types, facilitating both production and use.

[0052] Furthermore, it also includes a pressing plate 3, one end of which is arranged on the upper door panel 201 close to the end of the lower door panel 202, and the other end of the pressing plate 3 abuts against the lower door panel 202 after the upper door panel 201 and the lower door panel 202 are installed.

[0053] In this embodiment, the length of the pressure plate 3 is determined based on the dimensions of the upper door panel 201 and the lower door panel 202. During installation, first secure one end of the pressure plate 3 to the upper door panel 201 near the lower door panel 202 using bolts or welding. Because the upper portion of the rear lower door presses against the lower portion of the rear upper door, the pressure plate 3 must be positioned accurately during installation to ensure it does not affect the normal opening and closing sequence of the rear lower and upper doors.

[0054] When the upper door panel 201 and the lower door panel 202 are installed, the other end of the pressure plate 3 is tightly abutted against the lower door panel 202, and it is necessary to ensure that the pressure plate 3 can effectively press the upper and lower door panels, and at the same time meet the five-protection interlocking requirements, that is, the rear upper door can only be opened after the rear lower door is opened, and the pressure plate 3 cannot hinder this interlocking operation.

[0055] In actual operation, when the door needs to be opened for maintenance, the lower rear door must be opened first due to the structural design of the upper rear door and the connection method of the pressure plate 3, which presses the upper rear door. Only after the lower rear door is opened will the pressure plate 3's restraint on the upper rear door be released. Because one end of the pressure plate 3 is connected to the upper rear door and the other end abuts the lower rear door, when the lower rear door is opened, it will drive the pressure plate 3 to move accordingly, allowing the upper rear door to open, thus achieving the opening of the upper rear door and meeting the five-protection interlocking requirements.

[0056] The advantage is that the pressure plate 3 compresses the upper door panel 201 and the lower door panel 202 near the edges, preventing gaps during use and improving the door's sealing effect. Furthermore, through reasonable design and installation, the pressure plate 3 also meets the requirements of the five-protection interlock, enhancing the stability of the connection between the upper and lower door panels, reducing the possibility of separation due to external forces, and ensuring safe and standardized operation and maintenance.

[0057] Furthermore, it also includes an upper reinforcing rib 4 , which is arranged on the upper door panel 201 ; and a lower reinforcing rib 5 which is arranged on the lower door panel 202 .

[0058] In this embodiment, the shapes and dimensions of the upper and lower reinforcing ribs 4 and 5 are designed based on the dimensions and structure of the upper and lower door panels 201 and 202. The upper reinforcing ribs 4 are secured to the upper door panel 201 by welding or riveting, while the lower reinforcing ribs 5 are secured to the lower door panel 202 by welding or riveting. During welding, quality must be ensured to avoid welding defects that could compromise the function of the reinforcing ribs.

[0059] The upper and lower reinforcing ribs 4 and 5 can increase the strength of the upper and lower door panels 201 and 202. When subjected to external impacts, such as those caused by equipment failure inside the switchgear, the reinforcing ribs can disperse the stress, preventing deformation or damage to the door panels, thereby improving the reliability and safety of the door.

[0060] Furthermore, it also includes handles 6 , and there are several handles 6 , which are respectively arranged on the upper door panel 201 and the lower door panel 202 .

[0061] In this embodiment, the handle 6 is designed with ergonomic principles in mind, ensuring ease of grip and application. During installation, the handle 6 is secured to the upper door panel 201 and the lower door panel 202 via bolts or welding. Generally, two to three handles can be installed on each of the upper and lower door panels 201, 202, respectively. The specific number depends on the size of the door panels and their intended use.

[0062] The advantage is that the provision of handle 6 allows the operator to conveniently open and close the upper door panel 201 and the lower door panel 202. When performing operations such as equipment inspection, maintenance, or troubleshooting, the operator can easily open the door by grasping handle 6, improving operational convenience. In an emergency, the operator can quickly grasp handle 6 to open the door and take appropriate action. Furthermore, the rational design and installation of handle 6 can prevent operator errors caused by not being able to find the right point to apply force, thereby improving operational safety.

[0063] Furthermore, both the upper door panel 201 and the lower door panel 202 have a plurality of positioning holes 203 and include an electromagnetic lock mounting base 7. The electromagnetic lock mounting base 7 is disposed on the rear door frame 1 and is located near one end of the lower door panel 202. After the lower door panel 202 is installed, the electromagnetic lock mounting base 7 is located in the positioning holes 203.

[0064] The lighting lamp mounting seat 8 is arranged on the rear door frame 1 and is located near one end of the lower door panel 202 . After the lower door panel 202 is installed, the lighting lamp mounting seat 8 is located in another positioning hole 203 .

[0065] In this embodiment, the size and position of the positioning hole 203 are designed according to the size and shape of the electromagnetic lock mounting base 7 and the lighting lamp mounting base 8. The diameter of the positioning hole 203 is generally slightly larger than the outer diameter of the electromagnetic lock mounting base 7 and the lighting lamp mounting base 8 so that they can be accommodated smoothly.

[0066] The electromagnetic lock mounting base 7 and the lighting mounting base 8 are fixed to the rear door frame 1 by bolts or welding. During installation, their positioning must be accurate, ensuring that the electromagnetic lock mounting base 7 is positioned correctly within the positioning hole 203 of the lower door panel 202 when the electromagnetic lock is installed, and the lighting mounting base 8 is positioned correctly within the other positioning hole 203 of the lower door panel 202 when the lighting is installed. Furthermore, the installation positions of the electromagnetic lock mounting base 7 and the lighting mounting base 8 must meet the requirements for preventing the rear lower door from moving left and right. Specifically, the electromagnetic lock mounting base 7 should be located on the left side of the lower door panel 202 to prevent leftward movement, while the lighting mounting base 8 should be located on the right side of the lower door panel 202 to prevent rightward movement.

[0067] In actual use, after the rear lower door is installed, the electromagnetic lock is mounted on the electromagnetic lock mounting base 7. Since the electromagnetic lock mounting base 7 is fixed and located on the left side of the lower door panel 202, when an external force attempts to move the rear lower door to the left, the electromagnetic lock and the mounting base will block this movement. Similarly, the light is mounted on the light mounting base 8, which is located on the right side of the lower door panel 202. When an external force attempts to move the rear lower door to the right, the light mounting base 8 and the light itself will block this movement, thereby ensuring the stability of the rear lower door.

[0068] The advantage is that the design of positioning hole 203 and mounting base allows the electromagnetic lock and lighting to be accurately installed in the predetermined position, improving installation accuracy and efficiency. Furthermore, electromagnetic lock mounting base 7 and lighting mounting base 8 effectively prevent the rear lower door from shifting left or right, stabilizing the rear lower door's position and reducing the risk of door damage and equipment failure caused by rear lower door movement, thereby improving the safety and stability of the entire switchgear.

[0069] Furthermore, both the upper door panel 201 and the lower door panel 202 have a plurality of air holes 204 .

[0070] In this embodiment, the size and shape of the air holes 204 are designed according to actual needs. The air holes 204 can be circular, square, or other shapes.

[0071] Advantageously, the vents 204 facilitate heat dissipation within the switch cabinet. When the equipment within the switch cabinet generates heat, the heat can be dissipated to the outside through the vents 204, preventing heat from accumulating within the switch cabinet and reducing the possibility of damage to the equipment due to overheating.

[0072] Furthermore, it also includes a number of fasteners 9, which include mounting rods 901. There are two mounting rods 901, one end of each of the two mounting rods 901 is set on the rear door frame 1, and there are a number of mounting holes on the lower door panel 202 and the upper door panel 201, and the other end of the mounting rod 901 passes through the mounting hole; after the upper door panel 201 or the lower door panel 202 abuts against the rear door frame 1, the two ends of the clamping plate 902 are respectively sleeved on the two adjacent mounting rods 901, and the other end of the mounting rod 901 extends out of the clamping plate 902, and the other two ends of the clamping plate 902 have a clamping groove 9021; the eccentric block 903 is eccentrically rotated and arranged at the other end of the mounting rod 901, and one end of the eccentric block 903 has a clamping portion 9031 and the other end has a gripping portion 9032. After the eccentric block 903 rotates, the clamping groove 9021 abuts against the clamping portion 9031.

[0073] In this embodiment, the length of mounting rod 901 is determined by the thickness of rear door frame 1 and the thickness of the door panel. The length of mounting rod 901 is greater than the combined thickness of rear door frame 1 and door panel. The length and width of compression plate 902 are designed based on the diameter of mounting rod 901 and the dimensions of rear door frame 1. The dimensions of eccentric weight 903 are determined by the diameter of mounting rod 901 and the required compression force. The diameter of eccentric weight 903 is generally slightly larger than that of mounting rod 901 to enable eccentric rotation.

[0074] During installation, first secure one end of mounting rod 901 to rear door frame 1, then install the door panel onto mounting rod 901, passing it through the mounting hole in the door panel. Next, place the two ends of compression plate 902 over two adjacent mounting rods 901, so that one side of the compression plate 902 abuts the door panel. Finally, rotate eccentric weight 903 eccentrically to the other end of mounting rod 901, so that the compression portion 9031 of eccentric weight 903 mates with the compression groove 9021 of compression plate 902. The grip 9032 allows for easy adjustment of the rotation angle of eccentric weight 903, thereby adjusting the compression force of compression plate 902.

[0075] The advantage is that the fastener 9 can firmly fix the upper door panel 201 and the lower door panel 202 on the rear door frame 1. Through the cooperation of the mounting rod 902, the clamping plate 902 and the eccentric block 903, sufficient clamping force is provided to ensure that the door panel will not loosen or fall off even under vibration, external impact or long-term use. During the installation process, if some slight deviations or mismatches are found between the door panel and the rear door frame 1, the clamping force of the clamping plate 902 can be adjusted by adjusting the rotation angle of the eccentric block 903, so that the door panel can better fit the rear door frame 1, improving the accuracy and overall effect of the installation. At the same time, in the subsequent use process, if the door panel needs to be maintained or replaced, it is only necessary to reverse the operation and loosen the eccentric block 903 to conveniently remove the door panel.

[0076] Furthermore, the fastener 9 further includes a rotating shaft 904 , and the eccentric block 903 is rotatably arranged at the end of the mounting rod 901 away from the rear door frame 1 via the rotating shaft 904 .

[0077] In this embodiment, the advantage of using the rotating shaft 904 is that it facilitates the installation of the eccentric weight 903. After the pressing plate 902 is installed, the rotating shaft 904 passes through the mounting rod 901 and the eccentric weight 903, allowing the eccentric weight 903 to rotate smoothly on the mounting rod 901. At this time, the operator rotates the gripping portion 9032 to tightly abut the pressing portion 9031 against the pressing groove 9021, thereby restricting the relative position of the lower door panel 202 or the upper door panel 201 and the rear door frame 1.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A rear door of a central cabinet with a sealing plate, used to close the rear door frame of the central cabinet (1), characterized in that: It comprises a sealing door (2), the sealing door (2) being arranged on the rear door frame (1) and used for closing the rear door frame (1), the sealing door (2) comprising: An upper door panel (201), the upper door panel (201) being arranged at one end of the rear door frame (1); A lower door panel (202) is provided at the other end of the rear door frame (1).

2. The closed-plate rear door of a central cabinet according to claim 1, characterized in that: The closing door (2) is arranged on the rear door frame (1) by means of bolts.

3. The closed-plate rear door of a central cabinet according to claim 2, characterized in that: The upper door plate (201) and the lower door plate (202) both have a plurality of gourd holes for installing the bolts.

4. The closed-plate rear door of a central cabinet according to claim 1, characterized in that: Also includes: A pressing plate (3), one end of the pressing plate (3) is arranged on the upper door plate (201) close to one end of the lower door plate (202), and the other end of the pressing plate (3) abuts against the lower door plate (202) after the upper door plate (201) and the lower door plate (202) are installed.

5. The closed-plate rear door of a central cabinet according to claim 1, characterized in that: Also includes: Upper reinforcing ribs (4), the upper reinforcing ribs (4) being arranged on the upper door panel (201); A lower reinforcing rib (5), wherein the lower reinforcing rib (5) is arranged on the lower door panel (202).

6. The closed-plate rear door of a center cabinet according to claim 1, characterized in that: Also includes: A handle (6), wherein the handles (6) are provided in a plurality of numbers, and the plurality of handles (6) are respectively arranged on the upper door panel (201) and the lower door panel (202).

7. The closed-plate rear door of a center cabinet according to claim 1, characterized in that: The upper door panel (201) and the lower door panel (202) both have a plurality of positioning holes (203), and further include: An electromagnetic lock mounting seat (7), the electromagnetic lock mounting seat (7) being arranged on the rear door frame (1) and being located near one end of the lower door panel (202); after the lower door panel (202) is installed, the electromagnetic lock mounting seat (7) is located in the positioning hole (203); A lighting lamp mounting seat (8) is provided on the rear door frame (1) and is located near one end of the lower door panel (202); after the lower door panel (202) is installed, the lighting lamp mounting seat (8) is located in the other positioning hole (203).

8. The closed-plate rear door of a center cabinet according to claim 1, characterized in that: The upper door panel (201) and the lower door panel (202) both have a plurality of air holes (204).

9. The closed-plate rear door of a center cabinet according to claim 1, characterized in that: Also included are a number of fasteners (9), the fasteners (9) comprising: There are two mounting rods (901), one end of each of the two mounting rods (901) is arranged on the rear door frame (1), and a plurality of mounting holes are provided on the lower door panel (202) and the upper door panel (201), and the other end of the mounting rod (901) passes through the mounting holes; A pressing plate (902), after the upper door panel (201) or the lower door panel (202) abuts against the rear door frame (1), the two ends of the pressing plate (902) are respectively sleeved on two adjacent mounting rods (901), the other end of the mounting rod (901) extends out of the pressing plate (902), and both ends of the other side of the pressing plate (902) have pressing grooves (9021); An eccentric block (903) is eccentrically rotated and arranged at the other end of the mounting rod (901). One end of the eccentric block (903) has a pressing portion (9031) and the other end has a gripping portion (9032). After the eccentric block (903) rotates, the pressing groove (9021) abuts against the pressing portion (9031).

10. The closed-plate rear door of a center cabinet according to claim 9, characterized in that: The fastener (9) further comprises: A rotating shaft (904), wherein the eccentric block (903) is rotatably arranged at an end of the mounting rod (901) away from the rear door frame (1) via the rotating shaft (904).

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