Ventilation device of power distribution cabinet

Abstract

The utility model discloses a power distribution cabinet ventilation device, which comprises a power distribution cabinet body, a fan maintenance mechanism, a rapid clamping mechanism and a clamping auxiliary mechanism, the fan maintenance mechanism comprises a fixed frame, a rotating frame, a ventilation fan, a longitudinal plate and a matching plate, and the rapid clamping mechanism comprises a clamping pipe, a clamping rod, a clamping groove, a locking frame, a rotating ring, a gradient groove and a bending spring. A rotating frame in the fan maintenance mechanism is connected with a fixed frame through a rotating shaft assembly, so that the ventilation fan can rotate around a rotating shaft. According to the design, the overhaul and maintenance operation of the ventilation fan is simplified, the problem that time is consumed due to disassembly in a traditional fixed design is solved, through the combined design of the clamping rods, the clamping pipes and the clamping grooves, rapid disassembly and assembly of the ventilation fan and related assemblies are achieved, the connecting process is simplified, time consumed during overhaul or replacement is remarkably reduced, and the service life of the ventilation fan is prolonged. The arrangement of the bending spring provides additional elastic adjusting capability, so that the clamping rod can flexibly extend into the clamping pipe.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and more specifically, it relates to a power distribution cabinet ventilation device. Background Technology

[0002] In existing technologies, distribution cabinets, as important equipment in power systems, typically generate a large amount of heat inside, especially under high loads or long operating times. If heat dissipation is not carried out in time, it may lead to overheating of the equipment, resulting in malfunctions or even safety accidents.

[0003] Firstly, most existing distribution cabinet ventilation components adopt a fixed design. The ventilation components are usually connected to the main body of the distribution cabinet by bolts or welding. Although this structure ensures the stability of the ventilation components to a certain extent, it also brings significant inconvenience: when the ventilation components need to be cleaned, repaired or replaced, users often need to disassemble a large number of fasteners, which is complicated and time-consuming.

[0004] Secondly, in the existing technology, although some distribution cabinets are designed with openable maintenance doors, the connection method of the maintenance doors is often relatively simple, usually relying on hinges or similar connection structures. The connection stability of the maintenance doors is insufficient. During long-term use, due to vibration or external forces, the hinges of the maintenance doors may loosen, or even cause the door to fall off.

[0005] Even more serious is the inadequacy of the existing distribution cabinet ventilation system's design in terms of the integration of the access door and the ventilation components. The process of disassembling and assembling the ventilation components and the access door is usually quite cumbersome, lacking a structural design for quick connection or separation. When it is necessary to clean or replace the ventilation components separately, it is often necessary to remove the access door first. This operation is not only time-consuming, but may also cause wear and tear on the components due to repeated disassembly and assembly, affecting their service life. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a power distribution cabinet ventilation device to solve the technical problems mentioned in the background art, such as the ventilation components being difficult to open for cleaning, maintenance and replacement, the unstable connection of the maintenance door, and the inconvenience of opening or closing the maintenance door.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a power distribution cabinet ventilation device, comprising a power distribution cabinet body, a fan maintenance mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism. The fan maintenance mechanism includes a fixed frame, a rotating frame, a ventilation fan, a longitudinal plate, and a mating plate. The fixed frame is fixedly installed on the side of the power distribution cabinet body. One end of the rotating frame is rotatably connected to one end of the fixed frame. The ventilation fan is fixedly installed inside the rotating frame. The longitudinal plate and the mating plate are respectively installed at one end of the rotating frame and the fixed frame. The quick-connect mechanism connects the longitudinal plate and the mating plate. The quick-connect mechanism includes a connecting tube, a connecting rod, a slot, a locking frame, a rotating ring, a slope groove, and a bending spring. The connecting rod can extend into the interior of the connecting tube. The slot is provided on the side wall of the connecting rod. The locking frame is laterally slidably installed through the side wall of the connecting tube. The rotating ring is rotatably limited and installed on the outer wall of the connecting tube. The slope groove is provided on the inner wall of the rotating ring. The bending spring is installed at one end of the connecting rod. The rotating slot can press against the locking frame, causing the locking frame to extend into the slot.

[0010] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes a threaded ring, a rotating block, a pressing block, a pressing rod, a pressing groove, and a counter-tension spring. The rotating block is installed at the top end of the threaded ring, and the counter-tension spring is installed between adjacent pressing blocks. The rotating block can push the pressing block to make a centripetal movement. The pressing rod is installed longitudinally at the top end of the pressing block. The pressing groove is set on the side wall of the rotating ring, and the pressing rod can press into the pressing groove to fix the rotating ring on the outer wall of the snap-fit ​​tube.

[0011] The present invention is further configured such that the fixing bracket is fixedly installed on the side of the power distribution cabinet and the fixing bracket is connected to the inside of the power distribution cabinet, providing a stable support platform to ensure that the installation position of the ventilation fan and related components is fixed and to prevent shaking or misalignment during operation.

[0012] The present invention is further configured such that a rotating shaft assembly is installed at one end of the rotating frame, and the other end of the rotating shaft assembly is connected to the side of the fixed frame. The rotating frame is connected to the fixed frame through the rotating shaft assembly to realize the rotation adjustment of the ventilation fan, which facilitates inspection and maintenance.

[0013] The present invention is further configured such that a connecting frame is fixedly installed on the mating plate, and one end of the bending spring is rotatably connected to the connecting frame. The connection frame facilitates the insertion of the locking rod into the locking tube.

[0014] The present invention is further configured such that a connecting plate is installed at the bottom end of the side wall of the clamping tube, and the pressure block is slidably disposed in a centripetal direction at the top end of the connecting plate, and the threaded ring is threadedly connected to the outer wall of the connecting plate.

[0015] The present invention is further configured such that a thrust spring is installed on the inner wall of the pressure block, and the other end of the thrust spring is connected to the outer wall of the clamping tube. The thrust spring is installed on the inner wall of the pressure block to provide additional reverse thrust.

[0016] The present invention is further configured such that the connecting plate is fixedly installed on one end face of the longitudinal plate, and the bent snap-fit ​​rod can extend through the longitudinal plate and cooperate with the snap-fit ​​tube for quick snap-fit.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a ventilation device for a power distribution cabinet, which has the following beneficial effects:

[0019] This utility model is equipped with a fan maintenance mechanism. The rotating frame in the fan maintenance mechanism is connected to the fixed frame through a rotating shaft assembly, so that the ventilation fan can rotate around the rotating shaft. This design not only simplifies the inspection and maintenance of the ventilation fan, but also avoids the time-consuming problem of disassembly in the traditional fixed design, which greatly improves the maintenance efficiency. The combination of the longitudinal plate and the mating plate makes the overall design of the fan maintenance mechanism more compact and adaptable, which is convenient for maintenance and saves internal space of the power distribution cabinet.

[0020] This utility model features a quick-connect mechanism. Through the combined design of the connecting rod, connecting tube, and slot, it enables rapid assembly and disassembly of the ventilation fan and related components, simplifying the connection process and significantly reducing time consumption during maintenance or replacement. The locking frame and slot work together to firmly fix the position of the connecting rod. At the same time, the design of the rotating ring and the slope groove provides additional fixing effect, ensuring that the connection will not loosen during operation and improving the safety of the connection. The bending spring provides additional elastic adjustment capability, allowing the connecting rod to flexibly extend into the connecting tube to meet different connection requirements and improve adaptability.

[0021] This utility model features a snap-fit ​​auxiliary mechanism. Through the coordinated design of components such as a threaded ring, a rotating block, and a pressure block, the snap-fit ​​auxiliary mechanism provides higher connection stability on the basis of a quick snap-fit ​​mechanism, avoiding loosening or falling off due to vibration during operation. The rotating block pushes the pressure block to achieve centripetal movement, while the pressure rod can be pressed into the pressure groove to fix the rotating ring on the outer wall of the snap-fit ​​tube. The operation is simple and convenient, greatly reducing the complexity of the connection operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0023] Figure 2 This is a schematic diagram of the external structure of the fan maintenance mechanism in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of part of the fan maintenance mechanism in this utility model;

[0025] Figure 4This is a schematic diagram of the quick-connect mechanism and the connecting auxiliary mechanism in this utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of the quick-connect mechanism and the connecting auxiliary mechanism in this utility model.

[0027] In the diagram: 1. Distribution cabinet; 2. Fixed frame; 3. Rotating frame; 4. Ventilation fan; 5. Vertical plate; 6. Mating plate; 7. Connecting pipe; 8. Connecting rod; 9. Slot; 10. Locking frame; 11. Rotating ring; 12. Sloping groove; 13. Bending spring; 14. Threaded ring; 15. Rotating block; 16. Pressure block; 17. Pressure rod; 18. Pressure groove; 19. Reverse tension spring; 20. Rotating shaft assembly; 21. Connecting frame; 22. Connecting plate; 23. Reverse thrust spring. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5A ventilation device for a power distribution cabinet includes a power distribution cabinet body 1, a fan maintenance mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism. The fan maintenance mechanism includes a fixed frame 2, a rotating frame 3, a ventilation fan 4, a vertical plate 5, and a mating plate 6. The fixed frame 2 is fixedly installed on the side of the power distribution cabinet body 1. One end of the rotating frame 3 is rotatably connected to one end of the fixed frame 2. The ventilation fan 4 is fixedly installed inside the rotating frame 3. The vertical plate 5 and the mating plate 6 are respectively installed at one end of the rotating frame 3 and the fixed frame 2. The vertical plate 5 and the mating plate 6 are connected by the quick-connect mechanism. The locking mechanism includes a locking tube 7, a locking rod 8, a locking groove 9, a locking frame 10, a rotating ring 11, a slope groove 12, and a bending spring 13. The locking rod 8 can extend into the interior of the locking tube 7. The locking groove 9 is set on the side wall of the locking rod 8. The locking frame 10 is laterally slidably installed through the side wall of the locking tube 7. The rotating ring 11 is limited to rotate and installed on the outer wall of the locking tube 7. The slope groove 12 is set on the inner wall of the rotating ring 11. The bending spring 13 is installed at one end of the locking rod 8. The rotating groove can press against the locking frame 10, causing the locking frame 10 to extend into the locking groove 9.

[0032] In this embodiment, the ventilation fan 4 is fixed inside the rotating frame 3. The rotating frame 3 is connected to the fixed frame 2 via the rotating shaft assembly 20. The rotating shaft assembly 20 allows the rotating frame 3 to rotate freely at one end of the fixed frame 2, making it convenient for the ventilation fan 4 to be aligned with the ventilation opening inside the distribution cabinet. When maintenance is required, the quick-connect mechanism is released, and the rotating frame 3 can rotate around the rotating shaft, exposing the ventilation fan 4 to the outside for easy maintenance or replacement, thus achieving a fixed connection between the longitudinal plate 5 and the mating plate 6. Using the bending spring 13, the snap-fit ​​rod 8 can be bent and inserted into the snap-fit ​​tube 7. When the slope groove 12 of the rotating ring 11 rotates, it will press against the locking frame 10, causing the locking frame 10 to extend into the slot 9, so that the snap-fit ​​rod 8 and the snap-fit ​​tube 7 are fixedly connected. Rotating the rotating ring 11 in the opposite direction will release the pressure of the slope groove 12 on the locking frame 10, causing the locking frame 10 to exit the slot 9, and the snap-fit ​​rod 8 can be released, achieving quick disassembly.

[0033] The snap-fit ​​auxiliary mechanism includes a threaded ring 14, a rotating block 15, a pressure block 16, a pressure rod 17, a pressure groove 18, and a counter-tension spring 19. The rotating block 15 is installed at the top end of the threaded ring 14, and the counter-tension spring 19 is installed between adjacent pressure blocks 16. The rotating block 15 can push the pressure block 16 to move centripetally. The pressure rod 17 is installed longitudinally at the top end of the pressure block 16. The pressure groove 18 is provided on the side wall of the rotating ring 11. The pressure rod 17 can press into the pressure groove 18, so that the rotating ring 11 is fixed on the outer wall of the snap-fit ​​tube 7.

[0034] In this embodiment, the rotating block 15 pushes the pressing block 16 to move centripetally, and the pressing rod 17 presses into the pressing groove 18 of the rotating ring 11, so that the rotating ring 11 is fixed on the outer wall of the locking tube 7, and the locking frame 10 is stably extended into the locking groove 9 to maintain the stability of the locking. The anti-tension spring 19 provides a restoring force to ensure that the pressing block 16 always maintains the centripetal motion state, so that the pressing rod 17 moves away from the locking groove 9. At this time, the rotating ring 11 can rotate on the outer wall of the locking tube 7.

[0035] Please see Figures 1-5 As a supplementary embodiment of a power distribution cabinet ventilation device for a fan maintenance mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism: a fixed frame 2 is fixedly installed on the side of the power distribution cabinet 1, and the fixed frame 2 is connected to the inside of the power distribution cabinet 1. A rotating frame 3 is provided with a rotating shaft assembly 20 at one end, and the other end of the rotating shaft assembly 20 is connected to the side of the fixed frame 2. A connecting frame 21 is fixedly installed on a mating plate 6, and one end of a bending spring 13 is rotatably connected to the connecting frame 21. A connecting plate 22 is installed at the bottom of the side wall of the connecting pipe 7, and a pressure block 16 is slidably arranged in a centripetal direction at the top end of the connecting plate 22. A threaded ring 14 is threadedly connected to the outer wall of the connecting plate 22. A thrust spring 23 is installed on the inner wall of the pressure block 16, and the other end of the thrust spring 23 is connected to the outer wall of the connecting pipe 7. The connecting plate 22 is fixedly installed on one end face of the longitudinal plate 5, and the bent connecting rod 8 can extend through the longitudinal plate 5 to quickly connect with the connecting pipe 7.

[0036] More specifically, the fixed frame 2 is installed on the side of the distribution cabinet, connecting the ventilation channels inside and outside the distribution cabinet. The ventilation fan 4 is installed inside the rotating frame 3. The rotating frame 3 is connected to the mating plate 6 of the fixed frame 2 through the longitudinal plate 5 and is fixed using a quick-clamping mechanism. The clamping auxiliary mechanism fixes the rotating ring 11 to ensure the stability of the clamping. When the ventilation fan 4 is started, it blows or exhausts air into the distribution cabinet to achieve internal air circulation and reduce the temperature inside the cabinet. When the ventilation fan 4 needs to be repaired, the connection between the longitudinal plate 5 and the mating plate 6 is first loosened through the quick-clamping mechanism. After loosening, the rotating frame 3 rotates around the rotating shaft assembly 20 to move the ventilation fan 4 outside the distribution cabinet for easy repair or replacement. After completion, the rotating frame 3 is reset and the longitudinal plate 5 and the mating plate 6 are reconnected through the quick-clamping mechanism.

[0037] In summary, when the overall equipment is in use or running: when the fan maintenance mechanism is required, the ventilation fan 4 is fixed inside the rotating frame 3. The rotating frame 3 is connected to the fixed frame 2 through the rotating shaft assembly 20. The rotating shaft assembly 20 allows the rotating frame 3 to rotate freely at one end of the fixed frame 2, making it convenient for the ventilation fan 4 to be aligned with the ventilation opening inside the distribution cabinet. When maintenance is required, the quick-release mechanism is released, and the rotating frame 3 can rotate around the rotating shaft, exposing the ventilation fan 4 to the outside for easy maintenance or replacement.

[0038] When the quick-connect mechanism is in operation, the longitudinal plate 5 and the mating plate 6 are fixedly connected. Using the bending spring 13, the connecting rod 8 can be bent and inserted into the connecting tube 7. When the slope groove 12 of the rotating ring 11 rotates, it will press against the locking frame 10, causing the locking frame 10 to extend into the slot 9, so that the connecting rod 8 and the connecting tube 7 are fixedly connected. Rotating the rotating ring 11 in the opposite direction will release the pressure of the slope groove 12 on the locking frame 10, the locking frame 10 will exit the slot 9, and the connecting rod 8 will be released, realizing quick disassembly.

[0039] When the locking auxiliary mechanism is in operation, the rotating block 15 pushes the pressure block 16 to move centripetally, and the pressure rod 17 presses into the pressure groove 18 of the rotating ring 11, so that the rotating ring 11 is fixed on the outer wall of the locking tube 7, and the locking frame 10 is stably extended into the locking groove 9 to maintain the stability of the locking. The anti-tension spring 19 provides the restoring force to ensure that the pressure block 16 always maintains the centripetal movement state, so that the pressure rod 17 moves away from the locking groove 9. At this time, the rotating ring 11 can rotate on the outer wall of the locking tube 7.

[0040] The fixed frame 2 is installed on the side of the distribution cabinet, connecting the ventilation channels inside and outside the distribution cabinet. The ventilation fan 4 is installed inside the rotating frame 3. The rotating frame 3 is connected to the mating plate 6 of the fixed frame 2 through the longitudinal plate 5 and is fixed using a quick-clamping mechanism. The clamping auxiliary mechanism fixes the rotating ring 11 to ensure the stability of the clamping. When the ventilation fan 4 is started, it blows or exhausts air into the distribution cabinet to achieve internal air circulation and reduce the temperature inside the cabinet. When the ventilation fan 4 needs to be repaired, first loosen the connection between the longitudinal plate 5 and the mating plate 6 through the quick-clamping mechanism. After loosening, the rotating frame 3 rotates around the rotating shaft assembly 20 to move the ventilation fan 4 outside the distribution cabinet for easy repair or replacement. After completion, the rotating frame 3 is reset and the longitudinal plate 5 and the mating plate 6 are reconnected through the quick-clamping mechanism.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for a power distribution cabinet, comprising a power distribution cabinet body (1), a fan maintenance mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism, characterized in that: The fan maintenance mechanism includes a fixed frame (2), a rotating frame (3), a ventilation fan (4), a vertical plate (5), and a mating plate (6). The fixed frame (2) is fixedly installed on the side of the power distribution cabinet (1). One end of the rotating frame (3) is rotatably connected to one end of the fixed frame (2). The ventilation fan (4) is fixedly installed inside the rotating frame (3). The vertical plate (5) and the mating plate (6) are respectively installed at one end of the rotating frame (3) and the fixed frame (2). The vertical plate (5) and the mating plate (6) are connected by the quick-connect mechanism. The quick-connect mechanism includes... The components include a snap-fit ​​tube (7), a snap-fit ​​rod (8), a snap-fit ​​groove (9), a locking frame (10), a rotating ring (11), a slope groove (12), and a bending spring (13). The snap-fit ​​rod (8) can extend into the interior of the snap-fit ​​tube (7). The snap-fit ​​groove (9) is set on the side wall of the snap-fit ​​rod (8). The locking frame (10) is laterally slidably installed through the side wall of the snap-fit ​​tube (7). The rotating ring (11) is limited to rotate and installed on the outer wall of the snap-fit ​​tube (7). The slope groove (12) is set on the inner wall of the rotating ring (11). The bending spring (13) is installed at one end of the snap-fit ​​rod (8).

2. The distribution cabinet ventilation device according to claim 1, characterized in that: The snap-fit ​​auxiliary mechanism includes a threaded ring (14), a rotating block (15), a pressure block (16), a pressure rod (17), a pressure groove (18), and a counter-tension spring (19). The rotating block (15) is installed at the top end of the threaded ring (14), and the counter-tension spring (19) is installed between adjacent pressure blocks (16). The rotating block (15) can push the pressure block (16) to move centripetally. The pressure rod (17) is installed longitudinally at the top end of the pressure block (16). The pressure groove (18) is set on the side wall of the rotating ring (11). The pressure rod (17) can press into the pressure groove (18) so that the rotating ring (11) is fixed on the outer wall of the snap-fit ​​tube (7).

3. A distribution cabinet ventilation device according to claim 1, characterized in that: The fixing frame (2) is fixedly installed on the side of the power distribution cabinet (1), and the fixing frame (2) is connected to the inside of the power distribution cabinet (1).

4. A distribution cabinet ventilation device according to claim 1, characterized in that: One end of the rotating frame (3) is equipped with a rotating shaft assembly (20), and the other end of the rotating shaft assembly (20) is connected to the side of the fixed frame (2).

5. A distribution cabinet ventilation device according to claim 1, characterized in that: The mating plate (6) is fixedly equipped with a connecting frame (21), and one end of the bending spring (13) is rotatably connected to the connecting frame (21).

6. A distribution cabinet ventilation device according to claim 2, characterized in that: A connecting plate (22) is installed at the bottom of the side wall of the clamping tube (7), and the pressure block (16) is slidably set at the top end of the connecting plate (22) in a centripetal direction. The threaded ring (14) is threadedly connected to the outer wall of the connecting plate (22).

7. A distribution cabinet ventilation device according to claim 2, characterized in that: The inner wall of the pressure block (16) is provided with a thrust spring (23), and the other end of the thrust spring (23) is connected to the outer wall of the clamping tube (7).

8. A distribution cabinet ventilation device according to claim 6, characterized in that: The connecting plate (22) is fixedly installed on one end face of the longitudinal plate (5), and the bent snap-fit ​​rod (8) can extend through the longitudinal plate (5) and cooperate with the snap-fit ​​tube (7) for quick snap-fit ​​setting.

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