Modular prepackaged transformer assembly and method of assembly

Abstract

The application provides a modular preassembled transformer assembly and an assembling method, and relates to the technical field of power equipment installation. The installation shell is internally provided with a transformer, the bottom of the transformer is provided with an installation plate, the four corners of the installation plate are provided with sliding rails, each sliding rail is provided with a moving clamping assembly, and the installation shell is provided with a sliding groove. The groove wall of the sliding groove is provided with a clamping port, the clamping port is in communication with the sliding groove, and the clamping port extends in a direction close to the inner wall of the installation shell. The moving clamping assembly comprises an installation shell, the installation shell is provided with an installation shaft, the installation shaft is provided with a moving wheel, the moving wheel is provided with a plurality of clamping grooves, the installation shaft is rotationally connected with an installation sleeve, the installation sleeve is provided with a clamping block, and one side of the installation shell located in the sliding groove is provided with a plurality of inclined plates matched with the moving clamping assemblies. The application realizes quick limiting locking of the moving clamping assembly through cooperation of the sliding groove and the clamping port, and has high assembling efficiency.

Description

Technical Field

[0001] This invention relates to the field of power equipment installation technology, specifically a modular prefabricated transformer assembly and its assembly method. Background Technology

[0002] Transformers are core equipment in power systems that realize voltage transformation, power transmission and distribution, and are widely used in various substations, distribution rooms and industrial and commercial power supply sites. Prefabricated transformers typically have the transformer body installed inside a protective enclosure to achieve protection and support for the transformer.

[0003] Currently, prefabricated transformers are typically assembled using a hoisting method: the mounting shell is first placed on the foundation, and then a crane lifts the transformer from above into the shell. During the descent, operators must continuously adjust the transformer's horizontal position, aligning the mounting holes at its bottom with the pre-embedded bolts or threaded holes at the bottom of the mounting shell. Once the transformer is fully in place, the bolts are tightened to secure it. However, due to the transformer's large size and weight, it is prone to swaying during hoisting, making precise control of the descent position difficult. Bolt hole alignment is extremely challenging, often requiring repeated lifting, adjustment, and descent, resulting in very low assembly efficiency. Furthermore, the transformer is suspended above the mounting shell during hoisting, posing a significant safety hazard for operators working below. In addition, transferring the transformer from the transport vehicle to the hoisting location typically requires multiple transfers using forklifts or cranes, lacking dedicated moving components to assist in positioning, further complicating the process.

[0004] For example, patent application CN120308800A discloses a method for installing and commissioning transformers in power transmission and distribution projects. This method involves using a crane to lift the transformer to a foundation, adjusting its position to align with the foundation's embedded parts or bolt holes, and then using a lowering micro-control device to slowly lower the transformer into place. After positioning, jacks and a level are used to adjust the level and tighten the bolts. While this method improves the stability of the lifting and lowering process through the lowering micro-control device, it still employs a traditional lifting and positioning method. The transformer needs to be suspended and adjusted before positioning, and the difficulty in aligning the bolt holes remains. Furthermore, this method primarily addresses impact protection during lifting and does not include any moving components to assist in the transformer's positioning and locking within the mounting housing. This differs significantly from the modular installation method involving pushing the transformer along a sliding groove and locking it in this application, both in structural principle and assembly method.

[0005] Therefore, there is an urgent need for a modular prefabricated transformer assembly and assembly method that can enable rapid installation, accurate positioning, and convenient operation of transformers, in order to effectively overcome the problems of low efficiency, difficult alignment, and operational safety hazards of traditional hoisting and installation methods. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a modular pre-assembled transformer assembly and its assembly method. The movable snap-fit ​​assembly is quickly limited and locked by the cooperation of the slide groove and the snap-fit ​​interface, resulting in high assembly efficiency. The slider lifts the transformer via the horizontal section of the inclined slide groove to reduce the pressure on the movable snap-fit ​​assembly.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a modular prefabricated transformer assembly, including a mounting housing, One side of the mounting shell is an open end, and a cover plate is hinged to the mounting shell by a hinge, which covers the open end; The mounting housing contains a transformer, the bottom of the transformer contains a mounting plate, the four corners of the mounting plate contain slide rails, each slide rail contains a movable locking component, and the mounting housing contains a sliding groove. The groove wall is provided with a card interface, the card interface is connected to the groove, and the card interface extends recessed towards the inner wall of the mounting shell. The movable snap-fit ​​assembly includes a mounting shell, a mounting shaft on the mounting shell, a movable wheel on the mounting shaft, a plurality of slots on the movable wheel, a mounting sleeve rotatably connected to the mounting shaft, a locking block on one end of the mounting sleeve, a lever on the other end of the mounting sleeve, and an inclined plate on one side of the mounting shell located in the slide groove that cooperates with the lever. The adjacent movable card-connecting components are connected by a connecting plate.

[0008] Preferably, the transformer is provided with sliders on both sides, and the inner wall of the mounting housing is provided with inclined grooves on both sides that cooperate with the sliders. The inclined grooves include a horizontal section and an inclined section. The horizontal section is located near the open end of the mounting housing, and the inclined section is located near the inside of the mounting housing.

[0009] Preferably, the bottom of the mounting plate is provided with a pushing component, the pushing component includes a drive plate, the drive plate is symmetrically provided with connecting shafts, each connecting shaft is rotatably connected with a connecting strip, each connecting strip is rotatably provided with a push plate, and one end of the push plate is fixedly connected to the connecting plate.

[0010] Preferably, the mounting shell has a sealing groove on the contact side with the cover plate, and the cover plate has a sealing strip embedded in the sealing groove.

[0011] Preferably, the embedded end of the sealing strip has a spherical protrusion structure.

[0012] Preferably, one end of each mounting shaft extends toward the inclined plate, and the inner wall of the mounting housing has slots that correspond to and are adapted to the extended ends of each mounting shaft. The extended ends of each mounting shaft are inserted into the corresponding slots and engage with the slots.

[0013] Preferably, the slide rail is provided with a magnetic block, which initially attracts the movable locking component.

[0014] Preferably, it includes the following steps: S1. Place each of the movable wheels into the corresponding slide groove, and push each of the movable wheels to slide along the extension direction of the slide groove; S2. When each of the movable wheels slides to the position corresponding to the card interface, each of the movable wheels is pushed towards the inner wall of the mounting housing, so that each of the movable wheels deviates from the straight trajectory of the slide groove and enters the card interface. The hole wall of the card interface abuts against the outer periphery of the movable wheel to limit the displacement of the movable wheel in the extension direction of the slide groove, and locks the movable card assembly in the predetermined position of the mounting housing. S3. Place the transformer and the mounting plate on each of the movable snap-fit ​​components. Each of the movable snap-fit ​​components is held in the predetermined position by the positioning function of the snap-fit ​​interface, thus completing the installation of the transformer.

[0015] Preferably, it includes the following steps: S2. Align the sliders on both sides of the transformer with the inlet ends of the inclined grooves on both sides of the inner wall of the mounting housing, and push the transformer toward the interior of the mounting housing. Each slider enters the horizontal section of the inclined groove, and the horizontal section lifts each slider upward, so that the transformer is lifted upward, thereby reducing the pressure exerted by the transformer on each of the movable snap-fit ​​components. S3. Continue pushing the transformer, and each slider transitions from the horizontal section of the inclined groove to the inclined section, and slides down along the inclined section, and the transformer gradually descends with the slider; S4. Continue pushing the transformer to the predetermined position, each slider slides to the end of the inclined groove, and the bottom of the transformer abuts against the inclined structure at the bottom of the mounting shell to limit the transformer and complete the installation of the transformer.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the cooperation between a sliding groove and a locking interface. After the movable wheel slides along the sliding groove to a predetermined position, it is pushed laterally into the locking interface, achieving rapid positioning and locking of the movable locking component within the mounting housing. Positioning can be completed without the need for additional tools, significantly improving assembly efficiency. When the sliders on both sides of the transformer enter the horizontal section of the inclined sliding groove, the horizontal section lifts the sliders upward, causing the entire transformer to be lifted upward, thereby reducing the pressure exerted by the transformer on the movable locking component. This allows the movable locking component to move smoothly without jamming while the transformer is lifted. As the sliders continue to slide downward along the inclined section, the transformer slowly descends with the sliders to the predetermined position. The bottom of the transformer abuts against the inclined structure at the bottom of the mounting housing, limiting the movement. The weight of the transformer is supported by the bottom of the mounting housing. Meanwhile, the driving component links the various moving locking components through the connecting plate, enabling the simultaneous unlocking or locking of multiple locking points, further improving the convenience of operation and assembly efficiency. The overall structure is compact, easy to operate, and reliable in positioning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the modular prefabricated transformer assembly of the present invention; Figure 2 This is a detailed structural diagram of the modular prefabricated transformer assembly of the present invention; Figure 3 This is a schematic diagram showing the positions of the movable card-connecting component and the pushing component of the present invention; Figure 4 This is a detailed structural diagram of the movable card connector assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the movable card connector assembly of the present invention; Figure 6 This is an enlarged view of the movable card connector assembly of the present invention; Figure 7 This is an exploded view of the transformer and mounting housing of the present invention; Figure 8 This is a detailed structural diagram of the component driving the present invention; Figure 9 This is a detailed structural diagram of the inner wall of the mounting shell of the present invention; Figure 10 This is a detailed structural diagram of the mounting shell and sealing strip of the present invention; Figure 11 This is a detailed structural diagram of the sealing strip of the present invention.

[0018] In the diagram: 1. Mounting shell; 2. Cover plate; 3. Hinge; 4. Transformer; 5. Slide groove; 501. Card interface; 6. Mounting plate; 601. Slide rail; 602. Magnetic block; 7. Moving card assembly; 701. Mounting shell; 702. Moving wheel; 703. Card slot; 704. Mounting sleeve; 705. Card block; 706. Lever; 707. Inclined plate; 708. Connecting plate; 709. Mounting shaft; 7091. Slot; 8. Push assembly; 801. Drive plate; 802. Connecting shaft; 803. Connecting strip; 804. Push plate; 9. Inclined slide groove; 10. Slider; 11. Sealing groove; 12. Sealing strip. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figure 1-11This embodiment provides a modular prefabricated transformer assembly, including a mounting shell 1. The mounting shell 1 is a rectangular hollow shell structure used to accommodate and protect the transformer 4 installed inside it. One side of the mounting shell 1 is an open end, and a cover plate 2 is hinged to the mounting shell 1 via a hinge 3. The cover plate 2 can rotate around the hinge 3 and close to the open end to achieve the enclosure of the internal space of the mounting shell 1.

[0024] The housing 1 contains a transformer 4, and the bottom of the transformer 4 is provided with a mounting plate 6. Each of the four corners of the mounting plate 6 is provided with a slide rail 601, and each slide rail 601 is provided with a movable snap-fit ​​component 7.

[0025] Specifically, such as Figure 1-8 As shown, each movable locking component 7 is slidably mounted on the corresponding slide rail 601 and can reciprocate along the extension direction of the slide rail 601. The mounting housing 1 is provided with a sliding groove 5, which is located on both sides of the inner wall of the mounting housing 1 along the extension direction of the bottom wall of the mounting housing 1.

[0026] Each movable locking assembly 7 includes a mounting housing 701, a mounting shaft 709 on the mounting housing 701, and a movable wheel 702 on the mounting shaft 709. The movable wheel 702 is adapted to the slide groove 5 and can roll within the slide groove 5. The movable wheel 702 has multiple locking slots 703. A mounting sleeve 704 is rotatably connected to the mounting shaft 709. The mounting sleeve 704 has locking blocks 705, which are adapted to the locking slots 703. When the mounting sleeve 704 rotates around the mounting shaft 709, the locking blocks 705 can engage or disengage from the corresponding locking slots 703, thereby achieving relative locking or unlocking between the movable wheel 702 and the mounting sleeve 704.

[0027] like Figure 6 As shown, a locking interface 501 is provided on the wall of the slide groove 5. The locking interface 501 is connected to the slide groove 5 and extends recessed towards the inner wall of the mounting housing 1. The locking interface 501 is located on the side wall of the slide groove 5, at one end near the interior of the mounting housing 1. During assembly, the transformer 4, together with the mounting plate 6 and the movable locking assembly 7, is pushed inward from the open end of the mounting housing 1 as a whole module. Each movable wheel 702 slides from the outside to the inside along the corresponding slide groove 5. When the entire module moves to the predetermined position inside the mounting housing 1, each movable wheel 702 slides exactly to the position corresponding to the locking interface 501. At this time, by external force, each movable snap-fit ​​component 7 is pushed to move towards the inner wall of the mounting shell 1, so that each movable wheel 702 deviates from the straight extension direction of the slide groove 5 and enters the snap-fit ​​interface 501. The hole wall of the snap-fit ​​interface 501 abuts against the outer periphery of the movable wheel 702 to limit the displacement of the movable wheel 702 in the extension direction of the slide groove 5, thereby locking each movable snap-fit ​​component 7 in the predetermined position of the mounting shell 1.

[0028] like Figure 4-6As shown, the mounting housing 1 has multiple inclined plates 707 on one side of the slide groove 5 that cooperate with each movable locking assembly 7. When the movable locking assembly 7 is pushed to the locking position near the inner wall of the mounting housing 1, the inclined plate 707 presses the lever 706 provided on the mounting sleeve 704, driving the mounting sleeve 704 to rotate around the mounting shaft 709, thereby causing the locking block 705 to engage in the corresponding slot 703 on the movable wheel 702, thus further locking the movable wheel 702.

[0029] Adjacent movable locking components 7 are connected by a connecting plate 708. When an external force is applied to any movable locking component 7, through the linkage of the connecting plate 708, each movable locking component 7 moves synchronously toward the inner wall of the mounting shell 1, so that multiple movable wheels 702 can be simultaneously locked into the corresponding card interface 501, and the locking of the card block 705 and the card slot 703 can be completed synchronously.

[0030] In some embodiments, sliders 10 are provided on both sides of the transformer 4. Specifically, the sliders 10 are fixedly installed on the left and right side walls of the transformer 4 and protrude outward. Inclined grooves 9 that cooperate with the sliders 10 are provided on both sides of the inner wall of the mounting housing 1. The inclined grooves 9 are groove structures formed on the inner wall of the mounting housing 1, and their cross-section is adapted to the shape of the sliders 10, allowing the sliders 10 to be engaged and slide along them.

[0031] like Figure 7 As shown, the inclined groove 9 includes a horizontal section and an inclined section. The horizontal section is located near the open end of the mounting housing 1, and the inclined section is located near the interior of the mounting housing 1. That is, the inclined groove 9 is formed by connecting the horizontal section and the inclined section sequentially from the open end of the mounting housing 1 inward. In this embodiment, the horizontal section and the inclined section have a rounded transition. The horizontal section extends horizontally parallel to the bottom wall of the mounting housing 1, and the inclined section gradually slopes downward towards the interior of the mounting housing 1 from the connection point with the horizontal section.

[0032] like Figure 7 As shown, the transformer 4, mounting plate 6, and each movable snap-fit ​​component 7 are treated as a single module and pushed inward from the open end of the mounting shell 1. During the pushing process, each movable wheel 702 slides from the outside to the inside along its corresponding slide groove 5. Simultaneously, the sliders 10 on both sides of the transformer 4 enter the inlet ends of their respective inclined slide grooves 9 and slide along the horizontal section of the inclined slide groove 9. At this time, the height position of the slider 10 is determined by the horizontal section, and the transformer 4 is pushed in smoothly while maintaining a horizontal state.

[0033] Since the horizontal section is positioned higher than the starting end of the inclined section, i.e., the horizontal section is set at a higher position, when the slider 10 slides in the horizontal section, the slider 10 is supported by the horizontal section and lifted upward, thereby lifting the entire transformer 4 upward. This allows the weight of the transformer 4 to be transferred through the slider 10 to the inclined groove 9 on the inner wall of the mounting housing 1, thereby reducing the pressure exerted by the transformer 4 on each movable locking assembly 7, and enabling the movable locking assembly 7 to operate smoothly without being crushed when the transformer is lifted.

[0034] When the entire module is pushed to the predetermined position inside the mounting housing 1, each moving wheel 702 slides precisely to the position corresponding to the card interface 501. At the same time, each slider 10 transitions from the horizontal section to the inclined section and slides down along the inclined section, and the transformer 4 gradually descends as the slider 10 slides down.

[0035] At this time, by applying external force, each movable locking assembly 7 is pushed towards the inner wall of the mounting housing 1. Each movable wheel 702 deviates from the straight extension direction of the slide groove 5 and enters the locking interface 501. The hole wall of the locking interface 501 abuts against the outer periphery of the movable wheel 702, thereby limiting the displacement of the movable wheel 702 in the extension direction of the slide groove 5 and locking each movable locking assembly 7 in the predetermined position of the mounting housing 1. At the same time, the inclined plate 707 presses the lever 706 on the mounting sleeve 704, driving the locking block 705 to engage in the locking groove 703, thereby further locking the movable wheel 702.

[0036] In some embodiments, a pushing assembly 8 is provided at the bottom of the mounting plate 6, and a drive plate 801 is fixedly disposed at the bottom of the mounting plate 6. A connecting shaft 802 is symmetrically provided on the drive plate 801, and a connecting strip 803 is rotatably connected to each connecting shaft 802. A push plate 804 is rotatably provided on each connecting strip 803, and one end of the push plate 804 is fixedly connected to the connecting plate 708.

[0037] like Figure 8As shown, when the entire module is pushed into the mounting housing 1, and each moving wheel 702 reaches the position corresponding to the card interface 501, the moving wheels 702 have not yet entered the card interface 501. At this time, the end of the push plate 804 away from the connecting plate 708 (i.e., the free end) is in contact with the inner wall of the mounting housing 1. Since the length of the slide groove 5 is greater than the overall size of the moving card assembly 7, the entire module can still be pushed further inward after the moving wheels 702 reach the position of the card interface 501. As the operator continues to push the entire module into the mounting housing 1, the inner wall of the mounting housing 1 applies a reaction force to the free end of the push plate 804, pushing the push plate 804 to move relative to the drive plate 801. The push plate 804 transmits the thrust to the connecting plate 708 through the transmission of the connecting strip 803. The connecting plate 708 drives each movable locking component 7 to move synchronously towards the inner wall of the mounting housing 1, causing each movable wheel 702 to deviate from the straight extension direction of the slide groove 5 and enter the corresponding locking interface 501, thereby realizing the automatic locking of the movable locking component 7 in the mounting housing 1.

[0038] In some embodiments, the mounting shell 1 and the cover plate 2 are provided with a sealing groove 11 on the contact side, and the cover plate 2 is provided with a sealing strip 12 embedded in the sealing groove 11.

[0039] Specifically, such as Figure 9-11 As shown, the sealing groove 11 is a groove that extends continuously circumferentially along the end face of the open end of the mounting shell 1. The sealing strip 12 is an annular elastic body that matches the shape of the sealing groove 11 and is fixedly mounted on the end face of the cover plate 2 facing the mounting shell 1. When the cover plate 2 is closed on the open end of the mounting shell 1, the sealing strip 12 is embedded in the sealing groove 11 and undergoes elastic deformation, tightly fitting against the groove wall of the sealing groove 11 to form a sealing fit. This effectively prevents the transformer oil inside the mounting shell 1 from leaking outwards, while also preventing external moisture, dust, and other impurities from entering the interior of the mounting shell 1, ensuring the insulation performance and operational safety of the transformer 4. The sealing strip 12 is preferably made of oil-resistant rubber material to resist long-term corrosion from transformer oil and maintain its sealing performance.

[0040] In some embodiments, the embedded end of the sealing strip 12 is a spherical protrusion structure.

[0041] like Figure 10As shown, the embedded end of the sealing strip 12 (i.e., the end facing the bottom wall of the sealing groove 11) is a spherical protrusion. The diameter of this spherical protrusion is larger than the width of the sealing strip 12 body and is adapted to the shape of the opening and bottom of the sealing groove 11. The radius of curvature of the spherical protrusion structure matches the shape of the inner wall of the sealing groove 11, allowing the spherical protrusion to smoothly slide along the groove wall into the bottom of the sealing groove 11 during the embedding process, reducing insertion resistance. At the same time, after full embedding, the spherical protrusion forms multi-directional elastic contact with the inner wall of the sealing groove 11, increasing the contact area and sealing pressure. When the cover plate 2 is subjected to external impact or vibration, the spherical structure of the spherical protrusion can adaptively fine-tune the contact angle with the inner wall of the sealing groove 11, maintaining a close fit, effectively preventing sealing failure caused by vibration or thermal expansion and contraction, and further enhancing the reliability and durability of the seal.

[0042] In some embodiments, one end of each mounting shaft 709 extends toward the inclined plate 707. Specifically, one end of the mounting shaft 709 passes through the side wall of the mounting housing 701 and extends toward the inclined plate 707 to form a protruding extension end.

[0043] like Figure 4 , 9 As shown, the inner wall of the mounting housing 1 has slots 7091 that correspond one-to-one with and are adapted to the extension ends of each mounting shaft 709. The slots 7091 are recessed structures formed on the inner wall of the mounting housing 1, their positions corresponding to the extension ends of each mounting shaft 709, used to accommodate and engage the extension ends of the mounting shafts 709. When each movable snap-fit ​​assembly 7 moves into place towards the inner wall of the mounting housing 1, the extension ends of each mounting shaft 709 are inserted into their corresponding slots 7091 and engage with the slots 7091, thereby achieving auxiliary positioning and limiting between the movable snap-fit ​​assembly 7 and the mounting housing 1, forming a double limiting structure together with the card interface 501.

[0044] In some embodiments, a magnetic block 602 is provided on the slide rail 601. Before the entire transformer 4 module is pushed into the mounting shell 1 or during the initial state when the movable locking component 7 has not been driven and locked by the pushing component 8, the magnetic block 602 uses magnetic attraction to attract and fix the mounting shell 701 of the movable locking component 7 to a predetermined position on the slide rail 601. This prevents the movable locking component 7 from moving left or right or shifting on the slide rail 601, ensuring that the positions of each movable wheel 702 in the slide groove 5 remain consistent, and avoiding jamming or misalignment during assembly due to the free sliding of the movable locking component 7 in the initial state. When the pushing component 8 drives each movable locking component 7 to move closer to the inner wall of the mounting shell 1, the pushing force is greater than the magnetic attraction force of the magnetic block 602. The movable locking component 7 disengages from the magnetic block 602 and slides along the slide rail 601 to the locked position.

[0045] like Figure 3 As shown, in the initial state, the magnetic block 602 attracts the movable snap-fit ​​components 7, fixing each movable snap-fit ​​component 7 onto the slide rail 601. The transformer 4, mounting plate 6, and each movable snap-fit ​​component 7 are pushed inward from the open end of the mounting shell 1 as a whole module, and each movable wheel 702 slides from the outside to the inside along the corresponding slide groove 5. When the entire module is pushed to the predetermined position inside the mounting shell 1, the free end of the push plate 804 is in contact with the inner wall of the mounting shell 1. As the entire module continues to be pushed, the inner wall of the mounting shell 1 applies a reaction force to the push plate 804, causing the push plate 804 to move relative to the drive plate 801. The thrust is transmitted to the connecting plate 708 through the transmission of the connecting strip 803. The connecting plate 708 drives each movable locking component 7 to move synchronously towards the inner wall of the mounting shell 1. This thrust overcomes the magnetic attraction of the magnetic block 602, causing the movable locking component 7 to slide along the slide rail 601. Each movable wheel 702 is locked into the corresponding card interface 501. At the same time, the extension ends of each mounting shaft 709 are inserted into the corresponding slots 7091 to form a plug-in fit. The inclined plate 707 presses the lever 706 to make the locking block 705 lock into the card slot 703, completing the locking.

[0046] In some embodiments, the following steps are included: S1. Place each movable wheel 702 into its corresponding groove 5 and push each movable wheel 702 to slide along the extension direction of the groove 5. S2. When each movable wheel 702 slides to the position corresponding to the card interface 501, each movable wheel 702 is pushed towards the inner wall of the mounting housing 1, so that each movable wheel 702 deviates from the straight trajectory of the slide groove 5 and enters the card interface 501. The hole wall of the card interface 501 abuts against the outer periphery of the movable wheel 702 to limit the displacement of the movable wheel 702 in the extension direction of the slide groove 5, and locks the movable card assembly 7 in the predetermined position of the mounting housing 1. S3. Place the transformer 4 and mounting plate 6 on each movable snap-fit ​​component 7. Each movable snap-fit ​​component 7 is held in the predetermined position by the positioning function of the snap-fit ​​interface 501, thus completing the installation of the transformer 4.

[0047] In some embodiments, the following steps are included: S2. Align the sliders 10 on both sides of the transformer 4 with the entrance ends of the inclined grooves 9 on both sides of the inner wall of the mounting housing 1, and push the transformer 4 towards the inside of the mounting housing 1. Each slider 10 enters the horizontal section of the inclined groove 9. The horizontal section lifts each slider 10 upward, so that the transformer 4 is lifted upward, thereby reducing the pressure exerted by the transformer 4 on each movable snap-fit ​​assembly 7. S3. Continue pushing the transformer 4. Each slider 10 transitions from the horizontal section of the inclined slide 9 to the inclined section and slides down along the inclined section. The transformer 4 gradually descends with the slider 10. S4. Continue pushing the transformer 4 to the predetermined position. Each slider 10 slides to the end of the inclined groove 9. The bottom of the transformer 4 abuts against the inclined structure at the bottom of the mounting shell 1 to limit the transformer 4 and complete the installation of the transformer 4.

[0048] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A modular prefabricated transformer assembly, comprising a mounting housing (1), characterized in that: The mounting shell (1) has an open end on one side, and a cover plate (2) is hinged to the mounting shell (1) by a hinge (3), and the cover plate (2) covers the open end; The mounting housing (1) contains a transformer (4), the bottom of the transformer (4) contains a mounting plate (6), the four corners of the mounting plate (6) contain slide rails (601), each slide rail (601) contains a movable snap-fit ​​component (7), and the mounting housing (1) contains a slide groove (5). The groove (5) has a card interface (501) on its groove wall. The card interface (501) is connected to the groove (5) and extends recessed towards the inner wall of the mounting shell (1). The movable snap-fit ​​assembly (7) includes a mounting shell (701), a mounting shaft (709) on the mounting shell (701), a movable wheel (702) on the mounting shaft (709), a plurality of slots (703) on the movable wheel (702), a mounting sleeve (704) rotatably connected to the mounting shaft (709), a locking block (705) on one end of the mounting sleeve (704), a lever (706) on the other end of the mounting sleeve (704), and an inclined plate (707) on one side of the mounting shell (1) located in the slide groove (5) that cooperates with the lever (706). The adjacent movable card-connecting components (7) are connected by a connecting plate (708).

2. A modular prefabricated transformer assembly according to claim 1, characterized in that: The transformer (4) is provided with sliders (10) on both sides. The inner wall of the mounting shell (1) is provided with inclined grooves (9) that cooperate with the sliders (10) on both sides. The inclined grooves (9) include a horizontal section and an inclined section. The horizontal section is located near the open end of the mounting shell (1), and the inclined section is located near the inside of the mounting shell (1).

3. A modular prefabricated transformer assembly according to claim 2, characterized in that: The mounting plate (6) is provided with a pushing component (8) at the bottom. The pushing component (8) includes a drive plate (801). The drive plate (801) is symmetrically provided with connecting shafts (802). Each connecting shaft (802) is rotatably connected with a connecting strip (803). Each connecting strip (803) is rotatably provided with a push plate (804). One end of the push plate (804) is fixedly connected to the connecting plate (708).

4. A modular prefabricated transformer assembly according to claim 1, characterized in that: The mounting shell (1) has a sealing groove (11) on the contact side with the cover plate (2), and the cover plate (2) has a sealing strip (12) embedded in the sealing groove (11).

5. A modular prefabricated transformer assembly according to claim 4, characterized in that: The embedded end of the sealing strip (12) has a spherical protrusion structure.

6. A modular prefabricated transformer assembly according to claim 1, characterized in that: One end of each of the mounting shafts (709) extends toward the inclined plate (707). The inner wall of the mounting housing (1) is provided with slots (7091) that correspond to and are adapted to the extended ends of each of the mounting shafts (709). The extended ends of each mounting shaft (709) are inserted into the corresponding slots (7091) and are engaged with the slots (7091).

7. A modular prefabricated transformer assembly according to claim 1, characterized in that: The slide rail (601) is provided with a magnetic block (602), and in the initial state, the magnetic block (602) attracts the movable snap-fit ​​assembly (7).

8. A method for assembling a modular prefabricated transformer assembly according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Place each of the movable wheels (702) into the corresponding slide groove (5) and push each of the movable wheels (702) to slide along the extension direction of the slide groove (5); S2. When each of the movable wheels (702) slides to the position corresponding to the card interface (501), each of the movable wheels (702) is pushed towards the inner wall of the mounting shell (1), so that each of the movable wheels (702) deviates from the straight trajectory of the slide groove (5) and enters the card interface (501). The hole wall of the card interface (501) abuts against the outer periphery of the movable wheel (702) to limit the displacement of the movable wheel (702) in the extension direction of the slide groove (5) and lock the movable card assembly (7) in the predetermined position of the mounting shell (1). S3. Place the transformer (4) and the mounting plate (6) on each of the movable snap-fit ​​components (7). Each of the movable snap-fit ​​components (7) is held in the predetermined position by the positioning function of the snap-fit ​​interface (501) to complete the installation of the transformer (4).

9. A modular prefabricated transformer assembly according to any one of claims 1-7, characterized in that: Includes the following steps: S2. Align the sliders (10) on both sides of the transformer (4) with the entrance ends of the inclined grooves (9) on both sides of the inner wall of the mounting shell (1), and push the transformer (4) towards the inside of the mounting shell (1). Each slider (10) enters the horizontal section of the inclined groove (9), and the horizontal section lifts each slider (10) upward, so that the transformer (4) is lifted upward, thereby reducing the pressure exerted by the transformer (4) on each of the moving snap-fit ​​components (7). S3. Continue pushing the transformer (4), and each slider (10) transitions from the horizontal section of the inclined groove (9) to the inclined section, and slides down along the inclined section. The transformer (4) gradually descends with the slider (10). S4. Continue to push the transformer (4) to the predetermined position. Each slider (10) slides to the end of the inclined groove (9). The bottom of the transformer (4) abuts against the inclined structure at the bottom of the mounting shell (1) to limit the transformer (4) and complete the installation of the transformer (4).

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