Power distribution cabinet convenient to overhaul

Abstract

A power distribution cabinet convenient to overhaul disclosed by the present invention comprises a cabinet body assembly which comprises a transverse frame and a longitudinal frame connected with the transverse frame, the transverse frame and the longitudinal frame are respectively provided with an upper support plate and a lower support plate, and an internal support is fixedly arranged between the upper support plate and the lower support plate. A hardware plate for installing a switch is arranged on the inner support, a cabinet door, a back cover plate, a side cabinet cover and a connecting assembly are movably arranged on the longitudinal frame, and the connecting assembly is arranged on the longitudinal frame and connected with the cabinet door, the back cover plate and the side cabinet cover. According to the invention, the problem that the internal electric appliances and the electric wires are inconvenient to replace and maintain in the later period due to the fact that many electric wires need to be installed in the existing power distribution cabinet and the space of the power distribution cabinet is narrow is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution cabinets, and in particular to a distribution cabinet convenient for maintenance. Background Art

[0002] Traditional distribution cabinets adopt a box form. Due to only one cabinet door opening and densely arranged internal circuits, it is rather troublesome for later maintenance and repair. Common treatment methods include: 1. Reasonable layout: When designing a distribution cabinet, each component and connection line should be reasonably arranged according to the use of electrical equipment and the connection relationship of the circuit, avoiding being too dense or too scattered. In addition, components with plug-in connections should be used as much as possible, such as socket fuses, socket contactors, etc., to facilitate maintenance and replacement. 2. Clear identification: Clear and definite identification should be made inside and outside the distribution cabinet, including the names, models, and functions of electrical components, as well as information such as circuit diagrams and wiring diagrams. This helps maintenance personnel quickly locate problems and reduce maintenance time. 3. Safe wiring: When wiring, it should be carried out in accordance with standard electrical installation processes and requirements, and markings should be made on the wiring heads to prevent safety problems such as short circuits and electric leakage. 4. Easy disassembly: When installing a distribution cabinet, connection methods that are easy to disassemble, such as bolts and snap rings, should be considered for future maintenance. This can facilitate the disassembly of components, replacement of damaged equipment, or maintenance; However, it takes a large amount of time and cost, and it is difficult to fundamentally solve the problem of inconvenient maintenance caused by the small space of the distribution cabinet. Summary of the Invention

[0003] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] To solve the problem that current distribution cabinets are inconvenient for replacing and repairing internal electrical appliances and wires in the later stage due to the need to install a lot of wires and the small space of the distribution cabinet itself, the present invention provides the following technical solutions: A distribution cabinet convenient for maintenance includes a cabinet body assembly, which includes a horizontal frame and a vertical frame connected to the horizontal frame. Upper support plates and lower support plates are respectively provided on the horizontal frame and the vertical frame. An internal support is fixedly provided between the upper support plate and the lower support plate. A metal plate for installing switches is provided on the internal support. Cabinet doors, a back cover plate, and side cabinet covers are respectively movably provided on the vertical frame; Connecting components, which are arranged on the longitudinal frame and are respectively connected to the cabinet door, the back cover plate and the side cabinet cover. The connecting sleeve rod includes a connecting sleeve, a receiving channel, a rotary damping sleeve, a screw sleeve, a groove ring, a sealing and locking strip bar, a sealing ring, a sealing strip and a backing plate. A screw sleeve is fixedly sleeved on the back cover plate. One end of the screw sleeve is connected to the back cover plate through a backing plate. A groove ring is provided at the junction of the backing plate and the screw sleeve. The other end of the screw sleeve is provided with a sealing and locking strip bar. The screw sleeve is threadedly connected to the connecting sleeve through the sealing strip on the groove ring. The connecting sleeve is provided with a rotary damping sleeve and is provided with a receiving channel for accommodating weak electric wires.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: the connecting component includes a rotating shaft member and a locking member. The rotating shaft member is arranged on the longitudinal frame, and the locking member is matched with the rotating shaft member.

[0007] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: the rotating shaft member includes a shaft rod, a hardware gasket, a locking block, an extension rod and a bearing. Extension rods are provided at both ends of the shaft rod. The extension rods are arranged on the longitudinal frame through bearings. A hardware gasket and a locking block are provided on the side surface of the shaft rod.

[0008] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: the locking member includes a locking sleeve, an assembly hole and a locking hole. An assembly hole and a locking hole are provided on the locking sleeve. The locking hole is sleeved in cooperation with the locking block.

[0009] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: one end of the cabinet door is arranged on the shaft rod through a hardware gasket. The cabinet door is of a double-door structure. One end of the side cabinet cover is arranged on the shaft rod through a hardware gasket. The other end of the side cabinet cover is provided with a locking sleeve.

[0010] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: locking sleeves are provided at both ends of the back cover plate.

[0011] As a preferred solution of the power distribution cabinet convenient for maintenance according to the present invention, wherein: a cabinet door handle is provided on the cabinet door, and a side cover handle is provided on the side cabinet cover. Ventilation slots are provided on the side cabinet cover. The side cabinet covers are distributed oppositely on the longitudinal frame.

[0012] The beneficial effects of the present invention are as follows: The back cover plate and the side cabinet cover are arranged on the longitudinal frame, and the cabinet door can be disassembled and opened when necessary, thereby enhancing the space of the entire cabinet body and making the previously narrow space more spacious. In this way, it is convenient to repair and replace the electrical appliances and circuits inside the cabinet body, achieving the effect of conveniently repairing the power distribution cabinet under reasonable circumstances.

[0013] The beneficial effects of the present invention are as follows: Through the rotating shaft members arranged on the four longitudinal frames, the cabinet door can be opened in a double-leaf manner and locked. At the same time, one end of the side cabinet cover is connected to another shaft member, and a locking member is installed at the other end of the side cabinet cover. The lock hole of the lock sleeve on the locking member is tightly locked with the lock block of the rotating shaft member on the cabinet door when the side cabinet cover is closed. Locking members are also installed at both ends of the back cover plate. After the side cabinet cover is closed, the lock block on the side cabinet cover is tightly locked with the lock hole of the lock sleeve of the back cover plate. At this time, the cabinet door, the side cabinet cover, and the back cover plate are all tightly locked on the cabinet body. When not in need of repair, both the cabinet door and the side cabinet cover can be opened, while the back cover plate is in a locked state. Only when repair is required, the back cover plate can be opened after the side cabinet cover is opened. This design avoids setting too many locking members when solving the problem of the narrow space of the power distribution cabinet, thereby avoiding the problem of missing locking.

[0014] The beneficial effects of the present invention are as follows: Through the metal gasket connecting the rotating shaft member and the cabinet door, the cabinet door can be opened and locked. At the same time, for the metal gasket connecting the other shaft member of the side cabinet cover, a locking member is installed at one end of the side cabinet cover. The lock hole of the lock sleeve on the locking member is tightly locked with the lock block of the rotating shaft member on the cabinet door when the side cabinet cover is closed. Locking members are also installed at the other end of the side cabinet cover and at both ends of the back cover plate. After the side cabinet cover is closed, the lock block on the side cabinet cover is tightly locked with the lock hole of the lock sleeve on the back cover plate. Therefore, after the cabinet door and the side cabinet cover are closed, the back cover plate, the cabinet door, and the side cabinet cover will all be tightly locked with each other to ensure the safety of the cabinet body. This situation only occurs when the side cabinet cover is opened when the space of the cabinet body is insufficient. When the side cabinet cover is not opened, the back cover plate will remain locked. It achieves the effect of facilitating the assembly of the power distribution cabinet and the installation and repair of components such as electrical appliances and circuits.

[0015] The beneficial effects of the present invention are as follows: The connecting sleeve rod 107a is mainly used to fix the weak electric wires on the same metal plate 105, and the fixation is achieved through the following steps: First, pass the weak electric wire through the accommodating channel 107a-1a of the connecting sleeve 107a-1 and pass through the sealing ring 107a-4 and the screw sleeve 107a-3; then, rotate the screw sleeve 107a-3 and the connecting sleeve rod 107a to fix the weak electric wire. This design facilitates the routing process of the weak electric wire and also facilitates the unlocking operation when the weak electric wire is being repaired, improving the inspection effect.

[0016] Second, when binding the weak current wires, sealing is achieved through the sealing and locking bar 107a-aa inside the connecting sleeve rod 107a and the sealing strip 107a-5b on the groove ring 107a-3b. The sealing strip 107a-5b plays a sealing role between the connecting sleeve rod 107a and the screw sleeve 107a-3, while the sealing ring 107a-4 is thread-locked on the screw sleeve 107a-3 by the connecting sleeve rod 107a, and the sealing and locking bar 107a-3a presses the sealing ring 107a-4, thereby achieving the waterproof and dustproof effects when fixing the weak current wires. This design can not only firmly fix the weak current wires, but also effectively prevent dust and moisture from entering, protecting the safe operation of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them: Figure 1 is a perspective view of the whole of the present invention.

[0018] Figure 2 is a perspective view of the cabinet body assembly of the present invention.

[0019] Figure 3 is a perspective view of the cabinet body assembly of the present invention.

[0020] Figure 4 is a perspective view of the connection assembly of the present invention.

[0021] Figure 5 is a perspective view of the connection assembly of the present invention.

[0022] Figure 6 is a perspective view of the connection assembly of the present invention.

[0023] Figure 7 is of the present invention Figure 4 partial schematic view.

[0024] Figure 8 is a partial schematic view of the back cover plate of the figure of the present invention In the figure: cabinet assembly 100, horizontal frame 101, vertical frame 102, upper support plate 103, lower support plate 103a, internal bracket 104, hardware plate 105, top cover plate 106, bottom backing plate 106a, back cover plate 107, connecting sleeve rod 107a, connecting sleeve 107a-1, accommodation channel 107a-1a, rotary damping sleeve 107a-2, screw sleeve 107a-3, groove ring 107a-3b, sealing and locking strip bar 107a-3a, sealing ring 107a-4, sealing strip 107a-5b, backing plate 107a-6, cabinet door 108, cabinet door handle 108a, side cabinet cover 109, ventilation slot 109a, side cover handle 109b; Connecting component 200, rotating shaft part 201, shaft rod 201-1, hardware gasket 201-1a, lock block 201-1b, extension rod 201-2, bearing 201-2a, locking part 202, lock sleeve 202-1, assembly hole 202-1a, lock hole 202-1b. Specific embodiments

[0025] To make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selectively exclusive embodiment from other embodiments. Embodiment 1

[0028] Refer to Figure 1 To the figures, which are embodiments of the present invention. This embodiment provides a power distribution cabinet convenient for maintenance. The cabinet assembly 100 includes a horizontal frame 101 and a vertical frame 102. An upper support plate 103 and a lower support plate 103a are respectively provided on the horizontal frame 101 and the vertical frame 102. An internal bracket 104 is fixedly provided between the upper support plate 103 and the lower support plate 103a. A hardware plate 105 for installing switches is provided on the internal bracket 104. The cabinet door 108, the back cover plate 107 and the side cabinet cover 109 are respectively movably provided on the vertical frame 102. The connecting component 200 is provided on the vertical frame 102 and is respectively connected to the cabinet door 108, the back cover plate 107 and the side cabinet cover 109; Such asFigures 1 - 3 As shown, the back cover plate 107 and the side cabinet cover 109 are arranged on the longitudinal frame 102. The cabinet door 108 can be disassembled and opened when necessary, so as to increase the space of the whole cabinet body and make the original narrow space more spacious. In this way, it is convenient to repair and replace the electrical appliances and circuits inside the cabinet body, achieving the effect of facilitating the repair of the power distribution cabinet under reasonable conditions. In addition, the settings of the back cover plate 107 and the side cabinet cover 109 can also play a role in dust prevention and protecting electrical equipment, ensuring the normal operation of the equipment. In addition, since the electrical appliances and circuits inside the cabinet body often need to be maintained and replaced regularly, setting detachable cover plates and cabinet doors can reduce the work difficulty and time in the maintenance and replacement process, improving the maintenance efficiency and safety; The connecting component 200 includes a rotating shaft member 201 and a locking member 202. The rotating shaft member 201 is arranged on the longitudinal frame 102, and the locking member 202 is matched with the rotating shaft member 201. The rotating shaft member 201 is composed of a shaft rod 201-1, a hardware gasket 201-1a, a locking block 201-1b, an extension rod 201-2, and a bearing 201-2a. Extension rods 201-2 are provided at both ends of the shaft rod 201-1, and the extension rods 201-2 are arranged on the longitudinal frame 102 through the bearings 201-2a. A hardware gasket 201-1a and a locking block 201-1b are provided on the side surface of the shaft rod 201-1. The locking member 202 is composed of a locking sleeve 202-1, an assembly hole 202-1a, and a locking hole 202-1b. An assembly hole 202-1a and a locking hole 202-1b are formed on the locking sleeve 202-1, and the locking hole 202-1b is sleeved in cooperation with the locking block 201-1b. One end of the cabinet door 108 is arranged on the shaft rod 201-1 through the hardware gasket 201-1a. The cabinet door 108 is of a double-door structure. One end of the side cabinet cover 109 is arranged on the shaft rod 201-1 through the hardware gasket 201-1a, and a locking sleeve 202-1 is provided at the other end of the side cabinet cover 109. Locking sleeves 202-1 are provided at both ends of the back cover plate 107; As Figure 1 、 Figures 3 - 7As shown, through the rotating shaft members 201 provided on the four longitudinal frames 102, the cabinet door 108 can be opened in a double-leaf manner and locked. At the same time, one end of the side cabinet cover 109 is connected to another shaft member 201, and a locking member 202 is installed at the other end of the side cabinet cover 109. The locking hole 202-1b of the locking sleeve 202-1 of the locking member 202 is tightly locked with the locking block 201-1b of the rotating shaft member 201 on the cabinet door 108 when the side cabinet cover 109 is closed. Locking members 202 are also installed at both ends of the back cover plate 107. After the side cabinet cover 109 is closed, the locking block 201-1b on the side cabinet cover 109 is tightly locked with the locking hole 202-1b of the locking sleeve 202-1 of the back cover plate 107. At this time, the cabinet door 108, the side cabinet cover 109, and the back cover plate 107 are all tightly locked on the cabinet body. When not under maintenance, both the cabinet door 108 and the side cabinet cover 109 can be opened, while the back cover plate 107 is in a locked state. Only when maintenance is required, after the side cabinet cover 109 is opened, the back cover plate 107 can be opened. This design avoids setting too many locking members when solving the problem of the narrow space of the power distribution cabinet, thus avoiding the problem of missing locking; Furthermore, in addition, this locking design also improves the safety of the power distribution cabinet. By tightly locking the cabinet door 108, the side cabinet cover 109, and the back cover plate 107, it can effectively prevent unauthorized personnel from illegally entering the interior of the power distribution cabinet, thus ensuring the safe operation of electrical equipment. At the same time, in case of an emergency, the electrical equipment inside the power distribution cabinet can also be effectively protected, avoiding electrical failures and safety accidents caused by incorrect operation or human damage. In short, this locking design provides convenience and guarantee for the maintenance and repair of the power distribution cabinet while improving the safety of the power distribution cabinet; It is worth mentioning that through the hardware gasket 201-1a connecting the rotating shaft member 201 and the cabinet door 108, the cabinet door 108 can be opened and locked. At the same time, for the hardware gasket 201-1a of another shaft member 201 connecting the side cabinet cover 109, a lock member 202 is installed at one end of the side cabinet cover 109. The lock hole 202-1b of the lock sleeve 202-1 on the lock member 202 is tightly locked with the lock block 201-1b of the rotating shaft member 201 on the cabinet door 108 when the side cabinet cover 109 is closed. A lock member 202 is also installed at the other end of the side cabinet cover 109, and lock members 202 are installed at both ends of the back cover plate 107. After the side cabinet cover 109 is closed, the lock block 201-1b on the side cabinet cover 109 is tightly locked with the lock hole 202-1b of the lock sleeve 202-1 on the back cover plate 107. Therefore, after the cabinet door 108 and the side cabinet cover 109 are closed, the back cover plate 107, the cabinet door 108 and the side cabinet cover 109 will be tightly locked with each other to ensure the safety of the cabinet body. This situation only occurs when the side cabinet cover 109 is opened when the space of the cabinet body is insufficient. When the side cabinet cover 109 is not opened, the back cover plate 107 will remain locked. It achieves the effect of facilitating the assembly of the power distribution cabinet and the installation and maintenance of components such as electrical appliances and circuits. By setting detachable cabinet doors and side cabinet covers, it is convenient to repair and replace electrical equipment, and at the same time, it is also convenient to operate and maintain the circuits, wiring terminals, etc. inside the power distribution cabinet. Through the locking design, it can ensure that the devices and equipment inside the power distribution cabinet are safely protected after the cabinet door and the side cabinet cover are closed, thereby improving the reliability and safety of the power distribution cabinet; As Figure 8 shown, the connecting sleeve rod 107a is mainly used to fix the weak current wires on the same hardware plate 105 and realizes the fixation through the following steps: First, pass the weak current wires through the accommodating channel 107a-1a of the connecting sleeve 107a-1 and pass through the sealing ring 107a-4 and the screw sleeve 107a-3; then, rotate the screw sleeve 107a-3 and the connecting sleeve rod 107a to fix the weak current wires. This design facilitates the wiring process of the weak current wires and also facilitates the unlocking operation when the weak current wires are repaired, improving the inspection efficiency.

[0029] Furthermore, when binding the weak current wires, sealing is achieved through the sealing and locking bar 107a-aa inside the connecting sleeve rod 107a and the sealing strip 107a-5b on the groove ring 107a-3b. The sealing strip 107a-5b plays a sealing role between the connecting sleeve rod 107a and the screw sleeve 107a-3, while the sealing ring 107a-4 is thread-locked on the screw sleeve 107a-3 by the connecting sleeve rod 107a, and the sealing ring 107a-4 is squeezed by the sealing and locking bar 107a-3a, thereby achieving the waterproof and dustproof effects when the weak current wires are fixed. This design can not only firmly fix the weak current wires but also effectively prevent dust and moisture from entering, protecting the safe operation of the wires; It is worth mentioning that when binding the weak current wires, sealing is achieved through the sealing locking bar 107a-3a inside the connecting sleeve rod 107a and the sealing strip 107a-5b on the groove ring 107a-3b. The sealing strip 107a-5b is sleeved on the groove ring 107a-3b, playing a sealing role between the connecting sleeve rod 107a and the screw sleeve 107a-3. At the same time, the sealing ring 107a-4 also plays a sealing role when the connecting sleeve rod 107a is thread-locked on the screw sleeve 107a-3. When the screw sleeve 107a-3 and the connecting sleeve rod 107a are rotated and fixed, the sealing locking bar 107a-3a will squeeze and seal the sealing ring 107a-4, thus realizing the fixation of the weak current wires, effectively preventing the intrusion of moisture and dust, facilitating the separate maintenance of the weak current wires, and orderly fixing the weak current when not under maintenance, as well as achieving the purpose of waterproof and dustproof. In addition to the effects of waterproof, dustproof, fixation, and convenience, the connecting sleeve rod 107a can also provide the following effects: 1. Strength and durability: The connecting sleeve rod 107a is made of a strong material, with high strength and durability, and can maintain a fixed state for a long time without loosening or deforming easily. 2. Isolation and protection: Through the combination of the sealing ring 107a-4 and the sealing strip 107a-5b, the connecting sleeve rod 107a effectively isolates and protects the weak current wires from the influence of the external environment, such as moisture, dust, and other pollutants. 3. Safety: The design of the connecting sleeve rod 107a takes safety factors into consideration, ensuring that the weak current wires will not be damaged or broken during the fixation process, thus providing a safer working environment.

[0030] The side cabinet cover 109 is equipped with a side cover handle 109b, and at the same time, there is a ventilation slot 109a on it. Moreover, this side cabinet cover 109 is a split type distributed on the longitudinal frame 102. The cabinet door 108 is equipped with a cabinet door handle 108a. The door handle is used to conveniently open the cabinet door 108 and the side cabinet cover 109, and the ventilation slot 109a is used to dissipate heat from the power distribution cabinet.

[0031] Working principle; at the same time, by setting the rotating shaft member 201 and the hardware gasket 201-1a, the mutual locking of the cabinet door 108, the side cabinet cover 109, and the back cover plate 107 is realized, improving the safety and reliability of the power distribution cabinet. During the use process, according to the design requirements for operation, the cabinet door 108, the side cabinet cover 109, and the back cover plate 107 can be conveniently opened and closed for maintenance and replacement work. Due to the reasonable design and simple operation, the work efficiency of the maintenance personnel can be improved, and at the same time, the occurrence of accidental accidents is reduced. In short, while realizing the space optimization of the power distribution cabinet, this design takes into account the maintenance and safety of the power distribution cabinet.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. 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 spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention; Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change; Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A distribution cabinet convenient for maintenance, characterized in that: including a cabinet body assembly (100), including a horizontal frame (101) and a vertical frame (102) connected to the horizontal frame (101). Upper support plates (103) and lower support plates (103a) are respectively provided on the horizontal frame (101) and the vertical frame (102). An internal bracket (104) is fixedly provided between the upper support plate (103) and the lower support plate (103a). A metal plate (105) for installing a switch is provided on the internal bracket (104). Door panels (108), back covers (107) and side cabinet covers (109) are respectively movably arranged on the vertical frame (102); a connection assembly (200), the connection assembly (200) is arranged on the vertical frame (102) and is respectively connected to the door panel (108), the back cover (107) and the side cabinet cover (109). The connection sleeve rod (107a) includes a connection sleeve (107a-1), an accommodation channel (107a-1a), a rotary damping sleeve (107a-2), a screw sleeve (107a-3), a groove ring (107a-3b), a sealing and locking strip bar (107a-3a), a sealing ring (107a-4), a sealing strip (107a-5b) and a backing plate (107a-6). A screw sleeve (107a-3) is fixedly sleeved on the back cover 107. The backing plate (107a-6) at one end of the screw sleeve (107a-3) is connected to the back cover 107. A groove ring (107a-5b) is provided at the junction of the backing plate (107a-6) and the screw sleeve (107a-3). A sealing and locking strip bar (107a-3a) is provided at the other end of the screw sleeve (107a-3). The screw sleeve (107a-3) is threadedly connected to the connection sleeve (107a-1) through the sealing strip (107a-5b) on the groove ring (107a-3b). A rotary damping sleeve (107a-2) is provided on the connection sleeve (107a-1), and an accommodation channel (107a-1a) for accommodating weak electric wires is provided; 2. The convenient-to-maintain power distribution cabinet according to claim 1, characterized in that: the connection assembly (200) includes a rotating shaft member (201) and a locking member (202). The rotating shaft member (201) is arranged on the vertical frame (102), and the locking member (202) is matched with the rotating shaft member (201); 3. The convenient-to-maintain power distribution cabinet according to claim 2, characterized in that: the rotating shaft member (201) includes a shaft rod (201-1), a metal gasket (201-1a), a locking block (201-1b), an extension rod (201-2) and a bearing (201-2a). Extension rods (201-2) are provided at both ends of the shaft rod (201-1). The extension rods (201-2) are arranged on the vertical frame (102) through the bearings (201-2a). A metal gasket (201-1a) and a locking block (201-1b) are provided on the side surface of the shaft rod (201-1); 4. The distribution cabinet convenient for maintenance according to claim 3, wherein: The lock (202) includes a lock sleeve (202-1), a fitting hole (202-1a), and a lock hole (202-1b). The fitting hole (202-1a) and the lock hole (202-1b) are formed in the lock sleeve (202-1), and the lock hole (202-1b) is sleeved in cooperation with the lock block (201-1b).

5. The convenient-to-maintain power distribution cabinet according to claim 1, wherein: One end of the cabinet door (108) is arranged on the shaft rod (201-1) through a hardware gasket (201-1a). The cabinet door (108) has a double-door structure. One end of the side cabinet cover (109) is arranged on the shaft rod (201-1) through a hardware gasket (201-1a), and the other end of the side cabinet cover (109) is provided with a lock sleeve (202-1).

6. The convenient-to-maintain power distribution cabinet according to claim 1, wherein: Both ends of the back cover plate (107) are provided with lock sleeves (202-1).

7. The convenient-to-maintain power distribution cabinet according to any one of claims 1 and 6, characterized in that: A cabinet door handle (108a) is provided on the cabinet door (108), and a side cover handle (109b) is provided on the side cabinet cover (109). A ventilation slot (109a) is formed in the side cabinet cover (109), and the side cabinet covers (109) are distributed in a split manner on the longitudinal frame (102).

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