Box-type transformer convenient to clean
The design of the quick-release device and locking mechanism solves the problems of inconvenient disassembly and assembly and unstable fixing of box-type transformers, providing convenient cleaning and stable installation, and improving the operating efficiency and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-07
AI Technical Summary
Existing box-type transformers suffer from problems such as inconvenient disassembly and assembly, high labor intensity, poor cleaning effect, and unstable fixing during cleaning and maintenance, which affect the operating efficiency and safety performance of the equipment.
The design incorporates a quick-release device and locking mechanism, including a connecting sleeve, connecting rod, switching sleeve, movable shaft, locking block, connecting groove, and locking mechanism. Through tool-free disassembly and assembly and multiple locking mechanisms, the transformer can be easily disassembled and assembled and installed securely. Combined with the heat dissipation groove design of the enclosure, it provides a spacious operating space and good heat dissipation function.
It enables convenient disassembly and assembly of transformers and comprehensive cleaning, reduces maintenance difficulty and labor intensity, improves cleaning efficiency and cleaning effect, and enhances the stability and safety performance of the equipment.
Smart Images

Figure CN224096520U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of box-type transformer technology, and more specifically, it relates to a box-type transformer that is easy to clean. Background Technology
[0002] In the field of power equipment, box-type transformers are key devices for power transmission and distribution, and their maintenance and cleaning directly affect the stable operation and service life of the equipment. However, there are obvious technical deficiencies in the cleaning and maintenance of box-type transformers currently on the market. These problems not only increase maintenance costs and difficulties but may also affect the normal operating efficiency and safety performance of the equipment.
[0003] The primary problem is the inconvenience of disassembly and assembly. Existing technologies for cleaning and maintaining box-type transformers present significant obstacles: First, traditional box-type transformers typically use bolts to fix the channel steel, and these fasteners are usually located on the edges or corners of the narrow spaces inside the box, making them difficult to access directly. Second, disassembly requires specialized tools such as wrenches and screwdrivers, but the limited space within the box severely restricts the use and rotation angle of these tools. Furthermore, maintenance personnel must bend over or adopt uncomfortable postures to enter the box, greatly increasing the workload. Finally, due to limited visibility and restricted movement, certain parts of the transformer are difficult to clean thoroughly. This not only reduces the cleaning effect but may also lead to the accumulation of dust and dirt in specific areas, affecting heat dissipation performance and increasing safety hazards.
[0004] More seriously, the unstable fixing is a critical defect. Although some improved box-type transformers have achieved convenient assembly and disassembly, they have insufficient structural stability. First, the improved fixing structure design is too simplified and lacks the necessary self-locking mechanism. In outdoor environments, the box is often subjected to impacts and vibrations from natural factors such as strong winds and heavy rain. Second, the electromagnetic vibrations generated during equipment operation will cause continuous stress and fatigue to the fixing structure. This structural instability will not only cause the transformer to shift within the box, affecting the reliability of electrical connections, but may also lead to complete fixing failure in extreme cases, causing transformer damage or even equipment safety accidents, greatly increasing the risk of equipment operation. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the problems existing in the prior art, this utility model provides a box-type transformer that is easy to clean, so as to solve the technical problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a box-type transformer that is easy to clean, comprising a transformer, a mounting base provided below the transformer, and a quick-release device installed on the mounting base. The quick-release device includes a connecting sleeve, a connecting rod, a switching sleeve, a movable shaft, a switching groove, a locking block, a connecting groove, and a mating groove. The connecting sleeve is detachably fitted onto the outside of the connecting rod, the switching sleeve is rotatably mounted on the outside of the connecting sleeve, the movable shaft is disposed within the switching groove, the locking block is rotatably mounted within the switching groove via the movable shaft, and the connecting groove is located on the outside of the connecting rod. A groove is formed on the side wall of the connecting sleeve. A locking mechanism is provided on the outside of the connecting sleeve. The locking mechanism includes a return hole, a return groove, a push plate, a push rod, a reset plate, a slider, a round block, a sliding sleeve, and a movable spring. The return hole is formed at one end of the return groove, and the return groove is formed on the reset plate. Two push plates are fixedly installed on the push rod, and the push rod is fixedly installed on one side of the sliding sleeve. The reset plate is rotatably installed on the outside of the connecting sleeve. The slider is located on one side of the switching sleeve. The two ends of the movable spring are respectively connected to two adjacent sliders. The sliding sleeve is slidably fitted on the outside of the connecting sleeve.
[0009] The present invention is further configured such that a housing is installed on the outside of the transformer, and the housing has rotatable doors on both sides.
[0010] The present invention is further provided that the door of the box is provided with multiple heat dissipation grooves.
[0011] The present invention is further configured such that a push spring is movably provided on the outer side of the push rod, one end of the push spring is connected to the sliding sleeve, and the other end of the push spring is connected to the reset plate in contact.
[0012] The present invention is further configured such that a slide rail is fixedly provided on one side of the switching sleeve, and a slide groove is provided on one side of the slider. The slide groove is adapted to the slide rail, ensuring the precise displacement of the slider and the movable wheel.
[0013] The present invention is further configured such that the switching groove is provided with a plurality of cooperating springs, one end of the cooperating spring is connected to one side of the locking block, and the other end of the cooperating spring is in abutting relationship with the inner wall of the switching groove, thereby ensuring the precise movement of the locking block.
[0014] The present invention is further configured such that a movable wheel is rotatably provided on one side of the slider, and the movable wheel is engaged between two corresponding circular blocks, making the operation smoother.
[0015] The present invention is further configured such that the connecting groove is formed in a ring structure on the outside of the connecting rod, so that precise alignment is not required during installation, making the operation convenient.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a box-type transformer that is easy to clean, and has the following beneficial effects:
[0018] 1. The overall equipment, through the rational configuration of the transformer, mounting base, enclosure, and door, constructs a transformer system that is easy to maintain. The transformer design provides core functional support for the overall equipment, the mounting base configuration provides a stable platform for the quick-release device, the enclosure setting ensures the safety protection of the transformer, and the rotating door design realizes convenient internal maintenance access. This structure not only provides a spacious operating area through the rotating door, but also allows for the complete removal of the transformer through the split design, and the heat dissipation slot design ensures the normal heat dissipation function of the equipment. It effectively solves the problem that maintenance personnel of traditional box-type transformers have to bend their bodies to work in a narrow space, providing sufficient operating area so that the transformer can be completely removed for thorough cleaning, greatly improving cleaning efficiency and cleaning effect.
[0019] 2. The quick-release device forms a flexible disassembly and assembly system through the coordinated work of the connecting sleeve, connecting rod, switching sleeve, movable shaft, switching groove, locking block, connecting groove, and mating groove. The detachable design of the connecting sleeve and connecting rod provides the basis for disassembly and assembly. The cooperation between the switching groove and the movable shaft guides the operation of the locking block. The setting of the locking block and the connecting groove ensures precise locking. This structure not only achieves tool-free disassembly and assembly through the sleeve and rod connection, but also provides convenient operation through axial rotation, and ensures smooth disassembly and assembly through the groove guide. It effectively solves the problem that traditional box-type transformers use bolt fixing and require professional tools, simplifies the disassembly and assembly process, eliminates tool usage restrictions, and greatly reduces maintenance difficulty and labor intensity.
[0020] 3. The locking mechanism, through the precise cooperation of the return hole, return groove, push plate, push rod, reset plate, slider, sliding sleeve, and movable spring, constructs a reliable fixing system. The design of the return hole and return groove provides the locking path, the cooperation of the push plate and push rod realizes positioning control, and the setting of the reset plate and slider ensures accurate operation. This structure not only achieves solid support for the fixed position through multiple locking, but also provides an automatic return function through the elastic mechanism. It effectively solves the problem that the improved box-type transformer is prone to structural loosening due to external vibration because it lacks a self-locking mechanism. It resists the impact of strong wind and electromagnetic vibration, ensures the stable installation of the transformer in the box, and improves the safety performance of the equipment. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a box-type transformer that is easy to clean, according to this utility model.
[0022] Figure 2 This is a schematic diagram of the structure of the present invention with the door removed;
[0023] Figure 3 This is a schematic diagram of the transformer and mounting base in this utility model;
[0024] Figure 4 This is a schematic diagram of the quick-release device and locking mechanism in this utility model;
[0025] Figure 5 This is a schematic diagram of the dispersed structure of the quick-release device and locking mechanism in this utility model;
[0026] Figure 6 This is a cross-sectional structural diagram of the quick-release device and locking mechanism in this utility model.
[0027] In the diagram: 1. Transformer; 2. Mounting base; 3. Connecting sleeve; 4. Connecting rod; 5. Switching sleeve; 6. Movable shaft; 7. Switching groove; 8. Locking block; 9. Connecting groove; 10. Mating groove; 11. Return hole; 12. Return groove; 13. Push plate; 14. Push rod; 15. Reset plate; 16. Slider; 17. Sliding sleeve; 18. Movable spring; 19. Housing; 20. Housing door; 21. Heat dissipation groove; 22. Push spring; 23. Slide rail; 24. Slide groove; 25. Mating spring; 26. Movable wheel; 50. Round block. 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 1-6A box-type transformer that is easy to clean includes a transformer 1. A mounting base 2 is located below the transformer 1. A quick-release device is installed on the mounting base 2. The quick-release device includes a connecting sleeve 3, a connecting rod 4, a switching sleeve 5, a movable shaft 6, a switching groove 7, a locking block 8, a connecting groove 9, and a mating groove 10. The connecting sleeve 3 is detachably fitted onto the outside of the connecting rod 4. The switching sleeve 5 is rotatably mounted on the outside of the connecting sleeve 3. The movable shaft 6 is located within the switching groove 7. The locking block 8 is rotatably mounted in the switching groove 7 via the movable shaft 6. The connecting groove 9 is located on the outside of the connecting rod 4. The mating groove 10 is located on the side wall of the connecting sleeve 3. The outside of the connecting sleeve 3 is provided with… The locking mechanism includes a return hole 11, a return groove 12, a push plate 13, a push rod 14, a reset plate 15, a slider 16, a round block 50, a sliding sleeve 17, and a movable spring 18. The return hole 11 is opened at one end of the return groove 12, and the return groove 12 is opened on the reset plate 15. Two push plates 13 are fixedly installed on the push rod 14, and the push rod 14 is fixedly installed on one side of the sliding sleeve 17. The reset plate 15 is rotatably installed on the outside of the connecting sleeve 3. The slider 16 is located on one side of the switching sleeve 5. The two ends of the movable spring 18 are respectively connected to two adjacent sliders 16. The sliding sleeve 17 is slidably sleeved on the outside of the connecting sleeve 3.
[0032] A housing 19 is installed on the outside of the transformer 1, and housing doors 20 are rotatably installed on both sides of the housing 19.
[0033] Multiple heat dissipation slots 21 are provided on the door 20.
[0034] In this embodiment, when the transformer 1 needs to be cleaned, first open the two side doors 20, then remove the transformer 1. First, disconnect the transformer 1 from other electrical components, then rotate the reset plate 15 forward, causing the reset plate 15 to drive the return hole 11 and return slot 12 to rotate forward. When the return hole 11 rotates to a position concentric with the push plate 13, push the sliding sleeve 17, causing the sliding sleeve 17 to drive the push rod 14 and the push plate 13 to gradually pass into the return hole 11, and... The sliding sleeve 17 cooperates with the reset plate 15 to compress the push spring 22. When the push spring 22 is compressed to its limit, the push plate 13 near the sliding sleeve 17 just passes through the return hole 11 and moves to the other side of the reset plate 15. Then, the reset plate 15 is rotated in the opposite direction, causing the return hole 11 and the return groove 12 to rotate in the opposite direction, so that the push rod 14 slides into the return groove 12. Then, the push rod 14 and the push plate 13 at this point cooperate to limit the sliding sleeve 17 to one side of the reset plate 15. Sleeve 17 no longer limits the movable wheel 26, and then rotates the switching sleeve 5 in the forward direction. This causes the switching sleeve 5 to drive the slider 16 and the movable wheel 26 to rotate in the forward direction through the cooperation of the slide rail 23 and the slide groove 24. Then the movable wheel 26 will move out from between the two round blocks 50, and the movable wheel 26 will drive the slider 16 to slide outward along the slide rail 23 and the slide groove 24. Then the slider 16 will drive the movable spring 18 to stretch outward. At the same time, the switching sleeve 5 will drive the movable shaft 6 to move in the forward direction through the switching groove 7 opened on the inner side. Then the movable shaft 6 will drive the locking block 8 to rotate in the forward direction. Then the inner side of the mating groove 10 will press the locking block 8 on one side, causing the locking block 8 to rotate along the movable shaft 6 and be retracted into the mating groove 10 and press the mating spring 25 on one side. The locking block 8 will disengage from the connecting groove 9. Then the connecting sleeve 3 will be pulled upward to remove the connecting sleeve 3. Then, the other corresponding connecting sleeves 3 will be removed according to the above steps. Then the transformer 1 will be taken out of the housing 19, which will facilitate the comprehensive cleaning of the transformer 1.
[0035] Please see Figures 4-6 As a further implementation of the overall equipment: a push spring 22 is movably provided on the outer side of the push rod 14. One end of the push spring 22 is connected to the sliding sleeve 17, and the other end of the push spring 22 is connected to the reset plate 15 in contact.
[0036] A slide rail 23 is fixedly provided on one side of the switching sleeve 5, and a slide groove 24 is provided on one side of the slider 16. The slide groove 24 is adapted to the slide rail 23.
[0037] The switching groove 7 is provided with multiple cooperating springs 25. One end of the cooperating spring 25 is connected to one side of the locking block 8, and the other end of the cooperating spring 25 is in abutting relationship with the inner wall of the switching groove 7.
[0038] A movable wheel 26 is provided on one side of the slider 16, which can be rotated and is engaged between two corresponding circular blocks 50.
[0039] The connecting groove 9 is a ring-shaped structure located on the outside of the connecting rod 4.
[0040] More specifically, after cleaning the transformer 1, the transformer 1 is first placed inside the housing 19, with the connecting rod 4 passing through the corresponding mounting hole on the mounting base 2. Then, the connecting sleeve 3 is re-fitted onto the outside of the connecting rod 4. Next, the switching sleeve 5 is rotated in the reverse direction, causing the switching sleeve 5 to drive the slider 16 and the movable wheel 26 to rotate in the reverse direction via the slide rail 23 and the slide groove 24. At the same time, the switching sleeve 5 drives the inner switching groove 7 to rotate in the reverse direction and reset. The switching groove 7 also drives the movable shaft 6 and the locking block 8 to rotate and reset. Then, the inner wall of the mating groove 10 gradually stops interfering with the operation. The locking block 8 is limited on one side, and then the cooperating spring 25 pushes the locking block 8 to reset, causing the locking block 8 to rotate along the movable shaft 6. This causes part of the locking block 8 to rotate out of the switching groove 7 and into the connecting groove 9. At this time, the slider 16 drives the movable wheel 26 to rotate and reset to the original position between the two circular blocks 50. Then, the movable spring 18 resets and pulls the slider 16 to drive the movable wheel 26 to slide inward along the slide rail 23 and the slide groove 24 to reset. Then, the movable wheel 26 re-locks into the original position between the two circular blocks 50. Then, the reset plate 15 is rotated forward again, and the reset plate 15 drives the return hole 1. 1. The return groove 12 rotates in the forward direction. When the return hole 11 moves back to the position concentric with the push plate 13, the push spring 22 pushes the sliding sleeve 17 to slide and reset. Then, the sliding sleeve 17 drives the two push plates 13 to slide and reset through the push rod 14. After the push spring 22 is fully reset, the push plate 13 at the end of the push rod 14 resets and moves to the original side of the reset plate 15. Then, the reset plate 15 is rotated in the reverse direction, so that the reset plate 15 drives the return hole 11 and the return groove 12 to rotate and reset to a position that is not aligned with the push rod 14 and the push plate 13. The position is then determined by the cooperation of the push rod 14 and the top push plate 13 to support and limit the sliding sleeve 17, preventing the sliding sleeve 17 from sliding. Then, the inner wall of the sliding sleeve 17 limits the outer side of the movable wheel 26, so that the movable wheel 26 and the slider 16 cannot slide outward, making the switching sleeve 5 unable to rotate, thereby achieving the locking and positioning of the switching sleeve 5, thus ensuring the stability of the fixed structure and ensuring the stable use of the transformer 1. Then, the box door 20 is closed, and the box door 20 is locked to one side of the box body 19 by an external lock. The setting of the heat dissipation slot 21 ensures the normal heat dissipation of the transformer 1.
[0041] In summary, when using or operating the overall equipment: First, open both side doors 20. Then, disassemble the transformer 1. Disconnect the transformer 1 from other electrical components. Next, rotate the reset plate 15 clockwise, causing the return hole 11 and return groove 12 to rotate clockwise. When the return hole 11 rotates to a position concentric with the push plate 13, push the sliding sleeve 17, causing the sliding sleeve 17 to gradually insert the push rod 14 and push plate 13. The return hole 11, and the sliding sleeve 17 cooperates with the reset plate 15 to compress the push spring 22. When the push spring 22 is compressed to its limit, the push plate 13 near the sliding sleeve 17 just passes through the return hole 11 and moves to the other side of the reset plate 15. Then the reset plate 15 is rotated in the opposite direction, causing the return hole 11 and the return groove 12 to rotate in the opposite direction, so that the push rod 14 slides into the return groove 12. Then the push rod 14 and the push plate 13 at this point cooperate to limit the sliding sleeve 17 to one side of the reset plate 15. At this point, the sliding sleeve 17 no longer limits the movable wheel 26. Then, the switching sleeve 5 rotates forward, causing the sliding sleeve 5 to drive the slider 16 and the movable wheel 26 to rotate forward through the cooperation of the sliding rail 23 and the sliding groove 24. Then, the movable wheel 26 will move out from between the two round blocks 50, and the movable wheel 26 will drive the slider 16 to slide outward along the sliding rail 23 and the sliding groove 24. Then, the slider 16 will drive the movable spring 18 to stretch outward. At the same time, the switching sleeve 5 drives the movable shaft 6 to move forward through the switching groove 7 opened on the inner side. Then, the movable shaft 6 drives the locking block 8 to rotate forward. Then, one side of the inner side of the mating groove 10 presses the other side of the locking block 8, causing the locking block 8 to rotate along the movable shaft 6 and be retracted into the mating groove 10 and press the mating spring 25 on one side. The locking block 8 is disengaged from the connecting groove 9. Then, the connecting sleeve 3 is pulled upward to remove the connecting sleeve 3. Then, the other corresponding connecting sleeves 3 are removed according to the above steps. Then, the transformer 1 is taken out from the housing 19, which facilitates the comprehensive cleaning of the transformer 1.
[0042] After cleaning the transformer 1, first place the transformer 1 inside the housing 19, ensuring that the connecting rod 4 passes through the corresponding mounting hole on the mounting base 2. Then, re-fit the connecting sleeve 3 onto the outside of the connecting rod 4. Next, rotate the switching sleeve 5 in the reverse direction, causing the switching sleeve 5 to drive the slider 16 and the movable wheel 26 to rotate in the opposite direction via the slide rail 23 and the slide groove 24. Simultaneously, the switching sleeve 5 drives the inner switching groove 7 to rotate in the reverse direction and reset, and the switching groove 7 drives the movable shaft 6 and the locking block 8 to rotate and reset. Then, the inner wall of the mating groove 10 gradually stops interfering with the locking block 8. The side limit is then activated, and then the spring 25 pushes the locking block 8 to reset, causing the locking block 8 to rotate along the movable shaft 6. This causes a portion of the locking block 8 to rotate out of the switching groove 7 and into the connecting groove 9. At this time, the slider 16 drives the movable wheel 26 to rotate and reset to the original position between the two circular blocks 50. Then, the movable spring 18 resets and pulls the slider 16 to drive the movable wheel 26 to slide inward along the slide rail 23 and the slide groove 24 to reset. Then, the movable wheel 26 re-locks into the original position between the two circular blocks 50. Then, the reset plate 15 is rotated forward again, and the reset plate 15 drives the return hole 11 and... When the return groove 12 rotates in the forward direction, and the return hole 11 moves back to the position concentric with the push plate 13, the push spring 22 pushes the sliding sleeve 17 to slide and reset. Then, the sliding sleeve 17 drives the two push plates 13 to slide and reset via the push rod 14. After the push spring 22 is fully reset, the push plate 13 at the end of the push rod 14 resets and moves to the original side of the reset plate 15. Then, the reset plate 15 rotates in the reverse direction, causing the reset plate 15 to drive the return hole 11 and the return groove 12 to rotate and reset to a position not corresponding to the push rod 14 and the push plate 13. The position is then determined by the cooperation of the push rod 14 and the top push plate 13, which support and limit the sliding sleeve 17 to prevent it from sliding. Then, the inner wall of the sliding sleeve 17 limits the outer side of the movable wheel 26, so that the movable wheel 26 and the slider 16 cannot slide outward, and the switching sleeve 5 cannot rotate, thus locking and positioning the switching sleeve 5. This ensures the stability of the fixed structure and the stable use of the transformer 1. Then, the box door 20 is closed and locked to one side of the box body 19 by an external lock. The setting of the heat dissipation slot 21 ensures the normal heat dissipation of the transformer 1.
[0043] 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 box-type transformer that is easy to clean, comprising a transformer (1) and a mounting base (2) provided below the transformer (1), characterized in that: A quick-release device is installed on the mounting base (2). The quick-release device includes a connecting sleeve (3), a connecting rod (4), a switching sleeve (5), a movable shaft (6), a switching groove (7), a locking block (8), a connecting groove (9), and a mating groove (10). The locking block (8) is rotatably installed in the switching groove (7) via the movable shaft (6). The connecting groove (9) is opened on the outside of the connecting rod (4), and the mating groove (10) is opened on the side wall of the connecting sleeve (3). A locking mechanism is provided on the outside of the connecting sleeve (3). The locking mechanism includes a return hole (11), a return groove (12), and a push plate (13). The components include a push rod (14), a reset plate (15), a slider (16), a round block (50), a sliding sleeve (17), and a movable spring (18). The return hole (11) is opened at one end of the return groove (12), the return groove (12) is opened on the reset plate (15), two push plates (13) are installed on the push rod (14), the reset plate (15) is installed on the outside of the connecting sleeve (3), the slider (16) is set on one side of the switching sleeve (5), the two ends of the movable spring (18) are connected to the two adjacent sliders (16) respectively, and the sliding sleeve (17) is slidably set on the outside of the connecting sleeve (3).
2. The easy-to-clean box-type transformer according to claim 1, characterized in that: The transformer (1) is equipped with a box (19) on the outside, and the box (19) has doors (20) on both sides.
3. A box-type transformer that is easy to clean according to claim 2, characterized in that: The door (20) is provided with multiple heat dissipation slots (21).
4. A box-type transformer that is easy to clean according to any one of claims 1-3, characterized in that: The push rod (14) is movably provided with a push spring (22) on the outside. One end of the push spring (22) is connected to the sliding sleeve (17), and the other end of the push spring (22) is connected to the reset plate (15) in contact.
5. A box-type transformer that is easy to clean according to claim 4, characterized in that: The switching sleeve (5) is fixedly provided with a slide rail (23) on one side, and the slider (16) is provided with a slide groove (24) on one side, and the slide groove (24) is adapted to the slide rail (23).
6. A box-type transformer that is easy to clean according to claim 1, characterized in that: The switching groove (7) is provided with multiple cooperating springs (25). One end of the cooperating spring (25) is connected to one side of the locking block (8), and the other end of the cooperating spring (25) is in contact with the inner wall of the switching groove (7).
7. A box-type transformer that is easy to clean according to claim 5, characterized in that: The slider (16) has a movable wheel (26) on one side that rotates, and the movable wheel (26) is engaged between two corresponding circular blocks (50).
8. A box-type transformer that is easy to clean according to claim 6, characterized in that: The connecting groove (9) is a ring structure and is opened on the outside of the connecting rod (4).