A multi-tapped high voltage conversion transformer

Abstract

The utility model discloses a multi -tapped high -voltage conversion transformer, including transformer main part, is provided with the mounting panel at the top of transformer main part, and the inside of mounting panel is opened to have the pressing groove, and the bottom surface embedding of pressing groove is provided with the wiring board, and the coil of wiring board is linked with transformer main part, and the sliding of pressing groove inside is provided with the pressing plate, and the driving groove and the pressing block are provided on the pressing plate, and the pressing block is adjacent with wiring board, and the eccentric wheel is rotatably provided in the driving groove, and the connecting frame is slidably provided on the side wall of mounting panel, and the mounting panel on the one side of connecting frame is opened to have the installation slot, and the plug -in slot is provided in the installation slot, and the plug -in slot is communicated with pressing groove and is opposite with the position of wiring board. Through the improvement of the fixed type tap terminal of traditional transformer, the terminal of transformer is changed to hidden type, reduces the quantity of top connecting plate or wiring post, makes the top structure of transformer more simple, and the risk of damage due to external force impact in the carrying process is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology, and in particular relates to a multi-tap high-voltage conversion transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are a primary coil, a secondary coil, and an iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer).

[0003] Both the primary and secondary coils are connected to external electrical equipment via taps. By adding taps at different positions on the coil, the ratio of the number of turns in the winding can be adjusted, thereby changing the relationship between the input and output voltages. However, each tap of the existing multi-tap transformer requires a connection point, which results in the transformer having many terminal blocks or terminals on its top. Large transformers are heavy and easily damaged by external impacts during transportation.

[0004] Therefore, we need to design a multi-tap high-voltage conversion transformer to solve these problems. Utility Model Content

[0005] The problem to be solved by this utility model is to provide a multi-tap high-voltage conversion transformer.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A multi-tap high-voltage conversion transformer includes a transformer body. A mounting plate is provided on the top of the transformer body. A clamping groove is formed inside the mounting plate. A terminal block is embedded in the bottom surface of the clamping groove and is connected to the coil of the transformer body. A clamping plate is slidably disposed within the clamping groove. The clamping plate has a drive groove and a pressure block, which is adjacent to the terminal block. An eccentric wheel is rotatably disposed within the drive groove. A connecting frame is slidably disposed on the side wall of the mounting plate. A mounting groove is formed on one side of the mounting plate of the connecting frame. A plug-in groove is provided within the mounting groove, communicating with the clamping groove and opposite to the terminal block. An L-shaped connecting plate is rotatably mounted on the connecting frame, with both ends of the connecting plate capable of being inserted into the plug-in groove. A handle is rotatably disposed at the bottom of the mounting plate and is connected to the eccentric wheel.

[0008] Preferably, a set of opposite inner walls of the pressing groove are respectively provided with guide grooves, and a set of opposite side walls of the pressing plate are respectively fixedly provided with guide strips. The guide strips are located in the guide grooves and slide in contact with the guide grooves.

[0009] This configuration, with guide grooves on the inner walls of the clamping groove and guide strips fixed to the side walls of the clamping plate, ensures the stability of the clamping plate's sliding within the clamping groove. It prevents the clamping plate from shifting, tilting, or jamming during sliding, ensuring accurate engagement between the clamping block and the connecting plate, resulting in a tight fit between the connecting plate and the terminal block, and guaranteeing stable power transmission.

[0010] Preferably, the sum of the thickness of the pressing plate and the thickness of the pressing block is not less than the depth of the pressing groove.

[0011] This configuration ensures that the sum of the thickness of the clamping plate and the thickness of the clamping block is not less than the depth of the clamping groove. This guarantees that when the clamping plate moves towards the terminal block under the drive of the eccentric wheel, the clamping block can fully contact the connecting plate inserted into the plug slot and apply sufficient pressure to firmly press the connecting plate onto the terminal block. This avoids poor contact between the connecting plate and the terminal block due to insufficient clamping force, reduces contact resistance and heat generation, and ensures the stability and safety of current transmission.

[0012] Preferably, two carriage slots are provided on the mounting plate, the mounting slot is located between the two carriage slots and communicates with the two carriage slots, the carriage slots are provided with telescopic grooves, the connecting frame is L-shaped, its long end is slidably inserted into the telescopic groove, and the connecting plate is rotatably connected to the two short ends of the connecting frame respectively.

[0013] This design, with two carriage slots on the mounting plate, the mounting slot being the middle one and communicating with the carriage slot, and a telescopic groove within the carriage slot, allows the connecting frame, which is L-shaped, to slide into the telescopic groove at its long end. The connecting plate is rotatably connected to the short end of the connecting frame. This design enables the connecting frame to slide stably along the telescopic groove, and by rotating the connecting plate, ensures that each end of the connecting plate aligns with the insertion slot, allowing for flexible adjustment of the connecting plate's position. Simultaneously, the two carriage slots provide double-sided support for the connecting frame, enhancing its stability during sliding and preventing wobbling or misalignment of the connecting plate during movement, ensuring accurate insertion into the insertion slot.

[0014] Preferably, a limiting groove is formed on the side wall of the telescopic groove, the length of the limiting groove is the same as the length of the telescopic groove, and a limiting block is fixedly provided on the connecting frame, the limiting block is located in the limiting groove and slides against the limiting groove.

[0015] This design, with a limiting groove on the side wall of the expansion joint, and a fixed limiting block on the connecting frame that slides into the limiting groove (the length of the limiting groove being the same as the expansion joint), limits the sliding range of the connecting frame. This prevents the connecting frame from detaching from the expansion joint due to excessive movement during sliding, ensuring the connection stability between the connecting frame and the mounting plate. It also restricts the sliding direction of the connecting frame, allowing it to move only along the axial direction of the expansion joint, thus improving the overall structural safety and reliability.

[0016] Preferably, a clearance groove is also provided below the insertion groove, the length of which is equal to the difference between the long end and the short end of the L-shaped connecting plate.

[0017] With this design, a clearance groove is provided below the insertion slot, and the length of the clearance groove is equal to the difference between the long and short ends of the L-shaped connecting plate. When the connecting plate rotates to switch positions, the clearance groove provides sufficient space for the rotation of the connecting plate, avoiding collisions or interference between the connecting plate and the bottom structure of the mounting plate during rotation. This ensures that the connecting plate can smoothly rotate from one insertion slot to another, improving the smoothness and convenience of the connecting plate switching operation.

[0018] The advantages and positive effects of this utility model are:

[0019] This invention improves upon the fixed tap terminal block of traditional transformers by making the terminals on the transformer hidden, reducing the number of top terminal blocks or posts, simplifying the top structure of the transformer, and reducing the risk of damage caused by external impact during transportation. Through the cooperation of components such as the clamping groove, terminal block, clamping plate, eccentric wheel, connecting frame, connecting plate, and handle, different taps and connecting plates can be connected according to usage requirements. The pressure block can squeeze the connecting plate and terminal block to ensure a tight fit, guaranteeing conductivity. Moreover, the mechanical structure enables quick switching and stable connection of the connecting plates, making operation convenient and connection highly reliable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the image;

[0023] Figure 3 It is along Figure 1 A schematic diagram of the cross-section at point I-I;

[0024] Figure 4 It is along Figure 3 A schematic diagram of the cross-section at point II-II;

[0025] Figure 5 When the short end of the connecting plate is inserted into the plug slot, along Figure 3 A schematic diagram of the cross-section at point III-III;

[0026] Figure 6 When the long end of the connecting plate is inserted into the plug slot, along Figure 3 A schematic diagram of the cross-section at point III-III.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Transformer body; 2. Mounting plate; 3. Connecting frame; 4. Mounting slot; 5. Terminal block; 6. Connecting plate; 7. Handle; 8. Eccentric wheel; 9. Guide bar; 10. Pressure block; 11. Guide slot; 12. Limiting post; 13. Clearance slot; 14. Plug slot; 15. Telescopic slot; 16. Limiting slot; 17. Limiting block; 18. Pressing slot; 19. Drive slot; 20. Slide slot; 21. Pressing plate. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Example: Figure 1 As shown, a multi-tap high-voltage conversion transformer includes a transformer body 1. A mounting plate 2 is provided on the top of the transformer body 1. A clamping groove 18 is formed inside the mounting plate 2. A terminal block 5 is embedded in the bottom surface of the clamping groove 18 and is connected to the coil of the transformer body 1. A clamping plate 21 is slidably disposed within the clamping groove 18. A drive groove 19 and a pressure block 10 are provided on the clamping plate 21. The pressure block 10 is adjacent to the terminal block 5. An eccentric wheel 8 is rotatably disposed within the drive groove 19. A connecting frame 3 is slidably disposed on the side wall of the mounting plate 2. A mounting groove 4 is formed on one side of the mounting plate 2. A plug-in groove 14 is provided within the mounting groove 4. The plug-in groove 14 communicates with the clamping groove 18 and is positioned opposite to the terminal block 5. An L-shaped connector is rotatably mounted on the connecting frame 3. The connecting plate 6 is shaped and both ends of the connecting plate 6 can be inserted into the insertion slot 14. A handle 7 is also rotatably provided at the bottom of the mounting plate 2. The handle 7 is connected to the eccentric wheel 8. Limiting posts 12 are also fixed on the mounting plate 2 on both sides of the handle 7.

[0033] When voltage adjustment is required, the corresponding connecting bracket 3 is pulled out. When the connecting bracket 3 is pulled out, it causes the L-shaped connecting plate 6 to move synchronously. When the connecting bracket 3 is fully pulled out, the connecting plate 6 is flipped so that its long end aligns with the target insertion slot 14. Then, the connector is pushed so that the end of the connecting plate 6 is inserted into the insertion slot 14. At this point, the connecting plate 6 and the terminal block 5 are aligned through the insertion slot 14. Next, the handle 7 is rotated, causing the eccentric wheel 8 to rotate within the drive groove 19. The handle 7 stops when it contacts the limit post 12. During rotation, the eccentric wheel 8 presses against the inner wall of the drive groove 19, pushing the clamping plate 21 to slide within the clamping groove 18. As the clamping plate 21 slides, it causes the adjacent clamping block 10 to move above the terminal block 5. The clamping block 10 at the position where the connecting plate 6 is inserted moves onto the connecting plate 6, pressing the connecting plate 6 tightly against the terminal block 5 to form a stable connection and ensure current transmission.

[0034] Guide grooves 11 are respectively provided on a set of opposite inner walls of the pressing groove 18, and guide strips 9 are respectively fixedly provided on a set of opposite side walls of the pressing plate 21. The guide strips 9 are located in the guide grooves 11 and slide in contact with the guide grooves 11.

[0035] When the clamping plate 21 slides in the clamping groove 18, the guide bar 9 moves synchronously along the guide groove 11. The guide groove 11 constrains the guide bar 9, restricting the clamping plate 21 to move only along the extension direction of the guide groove 11, preventing the clamping plate 21 from shifting laterally during the sliding process, ensuring that the clamping block 10 can be accurately aligned with the contact position of the connecting plate 6 and the terminal block 5, and ensuring the effectiveness of the clamping action.

[0036] The sum of the thickness of the pressing plate 21 and the thickness of the pressing block 10 is not less than the depth of the pressing groove 18.

[0037] When the clamping plate 21 moves to its limit position towards the terminal block 5, the total height of the clamping plate 21 and the clamping block 10 combined is sufficient to fill the depth of the clamping groove 18, so that the clamping block 10 can apply sufficient pressure to the connecting plate 6, ensuring that the connecting plate 6 and the terminal block 5 are in close contact, and avoiding poor contact due to insufficient pressure.

[0038] Two carriage grooves 20 are provided on the mounting plate 2. The mounting groove 4 is located between the two carriage grooves 20 and is connected to the two carriage grooves 20. A telescopic groove 15 is provided in the carriage groove 20. The connecting frame 3 is L-shaped, and its long end is slidably inserted into the telescopic groove 15. The connecting plate 6 is rotatably connected to the two short ends of the connecting frame 3 respectively.

[0039] When the long end of the connecting frame 3 slides within the telescopic groove 15, the two slide rail grooves 20 provide double-sided support to the connecting frame 3 through the telescopic groove 15, ensuring the stability of the sliding trajectory of the connecting frame 3. Simultaneously, the rotatable connection between the connecting plate 6 and the short end of the connecting frame 3 ensures that the connecting plate 6 can flexibly adjust its angle to insert into the insertion slots 14 at different positions as it moves with the connecting frame 3.

[0040] A limiting groove 16 is provided on the side wall of the telescopic groove 15. The length of the limiting groove 16 is the same as the length of the telescopic groove 15. A limiting block 17 is fixedly provided on the connecting frame 3. The limiting block 17 is located in the limiting groove 16 and slides against the limiting groove 16.

[0041] When the connecting frame 3 slides along the telescopic groove 15, the limiting block 17 moves synchronously along the limiting groove 16. Since the length of the limiting groove 16 is the same as that of the telescopic groove 15, the limiting block 17 can limit the sliding range of the connecting frame 3, prevent the connecting frame 3 from detaching from the telescopic groove 15, and further constrain the sliding direction of the connecting frame 3 to prevent it from deviating during the sliding process.

[0042] Below the insertion slot 14, there is also a clearance slot 13, the length of which is equal to the difference between the long end and the short end of the L-shaped connecting plate 6.

[0043] When the connecting plate 6 rotates and switches to insert into different insertion slots 14, the short end of the connecting plate 6 will swing downward. The length design of the clearance slot 13 is just enough to accommodate the swing space of the short end of the connecting plate 6, so as to avoid the connecting plate 6 from colliding with the bottom of the mounting plate 2 and ensure that the connecting plate 6 can smoothly complete the angle adjustment and insertion action.

[0044] The working process of this embodiment is as follows: Before use, for ease of transportation, the long end of the connecting plate 6 is located below the mounting plate 2, while the short end is inserted into the insertion slot 14. During use, select the mounting slot 4 corresponding to the voltage position according to the requirements, and pull the connecting bracket 3 out of the mounting slot 4 until the limiting block 17 on the connecting bracket 3 moves to the limit position of the limiting slot 16 and is blocked. Then rotate the connecting plate 6 so that the long end of the connecting plate 6 is aligned with the insertion slot 14. Next, push the connecting bracket 3 so that the long end of the connecting plate 6 is inserted into the insertion slot 14. After the connecting bracket 3 is fully inserted, turn the handle. 7 drives the eccentric wheel 8 to rotate. When the eccentric wheel 8 rotates, it will drive the pressure plate 21 to move by squeezing the side wall of the drive groove 19. When the pressure plate 21 moves, it will drive the pressure block 10 to move above the terminal block 5. The pressure block 10 with the connecting plate 6 inserted will move above the connecting plate 6. Since the thickness of the pressure plate 21 and the thickness of the pressure block 10 are combined, their total height is sufficient to fill the depth of the pressure groove 18. Therefore, the pressure block 10 can apply sufficient pressure to the connecting plate 6 to ensure that the connecting plate 6 and the terminal block 5 are in close contact and to avoid poor contact due to insufficient pressure.

[0045] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A multi-tap high voltage conversion transformer comprising a transformer body (1), characterized in that: A mounting plate (2) is provided on the top of the transformer body (1). A clamping groove (18) is provided inside the mounting plate (2). A terminal block (5) is embedded in the bottom surface of the clamping groove (18). The terminal block (5) is connected to the coil of the transformer body (1). A clamping plate (21) is slidably provided in the clamping groove (18). A drive groove (19) and a pressure block (10) are provided on the clamping plate (21). The pressure block (10) is adjacent to the terminal block (5). An eccentric wheel (8) is rotatably provided in the drive groove (19). A connecting frame (3) is slidably provided on the side wall. An installation groove (4) is provided on the mounting plate (2) on one side of the connecting frame (3). A plug-in groove (14) is provided in the mounting groove (4). The plug-in groove (14) is connected to the clamping groove (18) and is opposite to the terminal block (5). An L-shaped connecting plate (6) is rotatably installed on the connecting frame (3). Both ends of the connecting plate (6) can be inserted into the plug-in groove (14). A handle (7) is also rotatably provided at the bottom of the mounting plate (2). The handle (7) is connected to the eccentric wheel (8).

2. The multi-tap high-voltage conversion transformer according to claim 1, characterized in that: Guide grooves (11) are respectively provided on a set of opposite inner walls of the pressing groove (18), and guide strips (9) are respectively fixedly provided on a set of opposite side walls of the pressing plate (21). The guide strips (9) are located in the guide grooves (11) and slide against the guide grooves (11).

3. A multi-tap high-voltage conversion transformer according to claim 1, characterized in that: The sum of the thickness of the pressing plate (21) and the thickness of the pressing block (10) is not less than the depth of the pressing groove (18).

4. A multi-tap high-voltage conversion transformer according to claim 1, characterized in that: Two carriage slots (20) are provided on the mounting plate (2). The mounting slot (4) is located between the two carriage slots (20) and communicates with the two carriage slots (20). A telescopic slot (15) is provided in the carriage slot (20). The connecting frame (3) is L-shaped, and its long end is slidably inserted into the telescopic slot (15). The connecting plate (6) is rotatably connected to the two short ends of the connecting frame (3).

5. A multi-tap high-voltage conversion transformer according to claim 4, characterized in that: A limiting groove (16) is provided on the side wall of the telescopic groove (15). The length of the limiting groove (16) is the same as the length of the telescopic groove (15). A limiting block (17) is fixedly provided on the connecting frame (3). The limiting block (17) is located in the limiting groove (16) and slides against the limiting groove (16).

6. A multi-tap high-voltage conversion transformer according to claim 1, characterized in that: Below the insertion slot (14), there is also a clearance slot (13), the length of which is equal to the difference between the long end and the short end of the L-shaped connecting plate (6).

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