An electromagnetic shielding transformer cover

Abstract

The present invention discloses an electromagnetic shielding transformer cover, which relates to the technical field of transformer covers, and includes a shell and a plurality of shielding plates. The shell is a rectangular structure, and the two side surfaces of the shell perpendicular to the Z-axis direction are open surfaces. The plurality of shielding plates are divided into two groups, and the plurality of shielding plates in the same group are combined to form a side plate for shielding the open surface of the shell. The upper and lower ends of the open surface side walls of the shell are both installed with mounting plates, and the shielding plate is movably arranged between the two mounting plates; it also includes a control mechanism for driving the shielding plate to rotate and a locking mechanism for fixing the outermost shielding plate. When the plurality of shielding plates are approximately perpendicular to the Z-axis, the open surface of the shell will be shielded. The present invention can expose more operating space by setting a shell with two open sides, and uses a plurality of movable shielding plates to cooperate to shield the open surface of the shell, which can effectively perform electromagnetic shielding and facilitate the disassembly, assembly and maintenance of the transformer.

Description

Technical Field

[0001] The invention relates to the technical field of transformer covers, and in particular to an electromagnetic shielding transformer cover. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. When the transformer is running, it will generate a leakage magnetic field, which will affect people and objects around it. Transformer magnetic shielding refers to a shielding measure to reduce the impact of the transformer's leakage magnetic field on the surrounding environment and improve its electromagnetic compatibility and safety. The magnetic shielding cover is a way of surrounding and shielding by installing materials with a magnetic contraction effect around the transformer. It usually uses metal materials with good magnetic permeability, which can effectively reduce the transformer's leakage magnetic field and interference.

[0003] After searching, the authorization announcement number is CN220208690U, which discloses an electromagnetic shielding transformer cover, including a base plate, a foot pad, a top cover and a pad. Slots are provided at the four corners of the lower end surface of the base plate, and the upper end of the foot pad is inserted into the slot. A positioning block is fixed in the middle of the upper end surface of the base plate, and the pad is located on the upper side of the base plate. The front and rear ends of the upper end of the base plate are rotatably mounted with end plates through hinges, and a heat dissipation window is provided on the lower side of the end plate. Side panels are rotatably mounted on both sides of the upper end surface of the base plate through hinges, and the side panels are adapted to the end plates. A wiring opening is provided at the upper end of the end plate, and a pad strip is fixed at the bottom end of the wiring opening.

[0004] The above technical solution designs a detachable top cover. When replacing or repairing the transformer, although the entire outer cover does not need to be removed, the top cover is a split design, and the disassembly and assembly of the top cover is still cumbersome. Moreover, removing the top cover can only expose the upper top surface of the transformer. There is insufficient operating space for transformer maintenance, especially for transformers installed at higher positions. It is actually high-altitude operation, which is not convenient for transformer maintenance operations. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the electromagnetic shielding cover of the transformer has a small exposed operating space and is inconvenient for disassembly, assembly and maintenance of the transformer body, and to propose an electromagnetic shielding transformer cover.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An electromagnetic shielding transformer housing, comprising a housing and a plurality of shielding plates, wherein the housing is a rectangular structure, and the two side surfaces of the housing perpendicular to the Z-axis direction are open surfaces, the plurality of shielding plates are divided into two groups, and the plurality of shielding plates in the same group are combined to form a side plate for shielding the open surface of the housing, and the upper and lower ends of the side wall of the open surface of the housing are both installed with mounting plates, and the shielding plate is movably arranged between the two mounting plates;

[0008] It also includes a control mechanism for driving the shielding plate to rotate and a locking mechanism for fixing the outermost shielding plate. When multiple shielding plates are approximately perpendicular to the Z axis, they will shield the open surface of the shell. When multiple shielding plates are in an open state, multiple shielding plates can be stacked to one side and expose the open surface of the shell.

[0009] Preferably, a slide groove is provided on the mounting plate, and rotating shafts arranged along the Y-axis direction are provided at both ends of the shielding plate. A sliding block is rotatably provided on the rotating shaft, and the sliding block is slidably connected to the slide groove.

[0010] Preferably, two ends of the sliding block are symmetrically provided with slots, the sliding block is located in the slots and the slots are engaged with the slots.

[0011] Preferably, a connecting rope is connected between two adjacent sliders, and the connecting rope is a non-elastic rope.

[0012] Preferably, magnets are installed on both sides of the slider, the two magnets are installed at the same height, and the magnetic poles of the magnets on corresponding surfaces of two adjacent sliders are opposite.

[0013] Preferably, the control mechanism includes a control plate, and the outer shell is provided with a positioning rod and a threaded rod which are parallel to each other, the positioning rod is fixedly connected to the outer shell, and the positioning rod is slidably connected to the control plate, the threaded rod is rotatably connected to the outer shell, and the threaded rod is threadedly connected to the control plate, a rotating arm is fixedly provided on the top of the rotating shaft, an eccentric column which is eccentrically arranged with the rotating shaft is fixedly provided on the top of the rotating arm, a pressing groove is opened on the control plate, and the eccentric column extends into the pressing groove and presses against the inner wall of the pressing groove.

[0014] Preferably, the shielding plate includes a main plate body, a sub-plate body 1 and a sub-plate body 2, and the sub-plate body 1 and the sub-plate body 2 are rotationally symmetrical along the axis of the rotating shaft, so that the cross-section of the shielding plate is Z-shaped, and when the open surface of the outer shell is shielded, an air-permeable gap is formed between the sub-plate body 1 and the sub-plate body 2 of the adjacent shielding plate, and the projections in the Z-axis direction overlap.

[0015] Preferably, the open side wall of the housing is provided with two baffles, and the two baffles respectively cooperate with two shielding plates located at the outermost sides to provide shielding.

[0016] Preferably, two locking mechanisms are provided on the same side of the shell, and the two locking mechanisms are respectively used to lock the two outermost shielding plates, and the locking mechanism includes a mounting rod fixedly provided on the mounting plate, and a locking hook is rotatably provided on the mounting rod, and the locking hook includes a bending portion and a pressing portion, the outer side of the bending portion is inclined and corresponds to the rotating shaft, and a semicircular hanging hole adapted to the rotating shaft is formed on the inner side of the bending portion, a compression spring is provided between the pressing portion and the shell, and a push rod is installed on the side of the pressing portion away from the compression spring.

[0017] Preferably, the shell has a hollow interlayer, and a corrugated board is arranged in the hollow interlayer.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The present invention can expose more operating space by providing a shell with open sides. A plurality of movable shielding plates are used to cover the open surface of the shell, which can effectively perform electromagnetic shielding. Since the shielding plates can rotate, the shielding plates can be controlled to rotate to a direction perpendicular to the X-axis and then stacked, thereby reducing the space occupied by the shielding plates, exposing the transformer inside the shell, and facilitating the disassembly, assembly and maintenance of the transformer. Moreover, since the shielding plates only change their positions, the operation is more reliable and convenient.

[0020] 2. The present invention sets a plurality of shielding plates to alternately block the open surface of the shell. Since the shielding plates are alternately staggered, electromagnetic waves cannot pass through the staggered shielding plates when propagating in a straight line, which can effectively play the role of electromagnetic shielding. In addition, there is an air-permeable gap between two adjacent shielding plates. While ensuring the electromagnetic shielding effect, it can ensure the airflow exchange inside and outside the shell, thereby improving the heat dissipation effect of the transformer.

[0021] 3. When the shielding plate designed in the present invention is opened in the shielding shell, the shielding plate is approximately perpendicular to the Z axis, and the main plate body, the sub-plate body 1 and the sub-plate body 2 all have an angle with the Z axis. Therefore, after the electromagnetic wave is emitted onto the shielding plate, compared with the traditional flat plate, when the electromagnetic wave reaches the surface of the shielding plate, the reflection of the incident wave is consumed once, and the energy that is not reflected by the surface and enters the shielding plate is attenuated by the material properties of the shielding plate during the forward propagation process, which is the so-called absorption. The remaining energy that has not been attenuated in the shielding plate will be reflected again when it is transmitted to the other surface inside the shielding plate, and will return to the shielding plate, and may be reflected multiple times on the two metal interfaces between the shielding plate and the air, so as to quickly and efficiently consume and absorb the electromagnetic waves and achieve a high-efficiency electromagnetic shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic shielding transformer cover proposed by the present invention;

[0023] Figure 2 A schematic cross-sectional view of the shielding state of an electromagnetic shielding transformer outer cover proposed by the present invention;

[0024] Figure 3 A schematic cross-sectional view of the electromagnetic shielding transformer in an open state according to the present invention;

[0025] Figure 4A schematic cross-sectional view of the stacked state of the outer covers of an electromagnetic shielding transformer proposed by the present invention;

[0026] Figure 5 A structural schematic diagram of the rotation process of a shielding plate in an outer cover of an electromagnetic shielding transformer proposed by the present invention;

[0027] Figure 6 This is a structural schematic diagram of the electromagnetic wave shielding principle in the outer cover of an electromagnetic shielding transformer proposed by the present invention;

[0028] Figure 7 for Figure 2 The enlarged structural diagram of part A in the middle;

[0029] Figure 8 for Figure 4 The enlarged structural diagram of part B in the middle;

[0030] Fig. 9 A schematic diagram of the structure of a shielding plate in an outer cover of an electromagnetic shielding transformer proposed by the present invention;

[0031] Fig.10 This is a schematic diagram of the structure of a corrugated plate in an outer cover of an electromagnetic shielding transformer proposed by the present invention;

[0032] Fig.11 This is a schematic diagram of the structure of a control mechanism in an electromagnetic shielding transformer housing proposed by the present invention;

[0033] Fig.12 The present invention is a schematic structural diagram of a locking mechanism in an electromagnetic shielding transformer outer cover.

[0034] In the figure: 1. shell; 11. baffle; 12. corrugated board; 2. shielding plate; 21. rotating shaft; 22. rotating arm; 23. eccentric column; 24. main body; 25. auxiliary board body 1; 26. auxiliary board body 2; 27. air permeability gap; 3. mounting plate; 31. slide groove; 32. slider; 33. connecting rope; 34. magnet; 4. control mechanism; 41. positioning rod; 42. threaded rod; 43. control board; 44. pressing groove; 5. locking mechanism; 51. locking hook; 511. bending part; 512. pressing part; 513. semicircular hanging hole; 514. compression spring; 515. push rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] Reference Figure 1-4 A electromagnetic shielding transformer cover comprises a shell 1 and a plurality of shielding plates 2. The shell 1 is a rectangular structure. The internal space of the shell 1 can accommodate the transformer. The transformer is installed inside the shell 1. The two side surfaces of the shell 1 perpendicular to the Z-axis direction are open surfaces. The transformer is installed and entered from the open surface. Both side surfaces of the shell 1 are open, exposing sufficient operating space to facilitate subsequent maintenance of the transformer. The plurality of shielding plates 2 are divided into two groups. The plurality of shielding plates 2 in the same group are combined to form a side plate for shielding the open surface of the shell 1. When the transformer is operating normally, the open surface of the shell 1 is shielded by the side plate, the transformer is electromagnetically shielded, and the adverse effects of the leakage magnetic field generated by the transformer on the surrounding environment are reduced.

[0038] Reference Figure 1-9 The upper and lower ends of the side walls of the open surface of the shell 1 are both installed with mounting plates 3, the mounting plates 3 are arranged along the X-axis direction, and the two mounting plates 3 correspond to the upper and lower edges of the open surface of the shell 1 respectively. The shielding plate 2 is movably arranged between the two mounting plates 3, and a slide groove 31 is opened on the mounting plate 3. The two ends of the shielding plate 2 are provided with a rotating shaft 21 arranged along the Y-axis direction, and a slider 32 is rotatably arranged on the rotating shaft 21. The slider 32 is slidably connected with the slide groove 31. Through the cooperation between the rotating shaft 21 and the slider 32, the shielding plate 2 can rotate around the axis of the rotating shaft 21 to control the angle of the shielding plate 2. The shielding state of the open surface of the shell 1 is switched by the change of the angle of the shielding plate 2. Through the cooperation between the slider 32 and the slide groove 31, multiple shielding plates 2 are maintained in a state of being parallel to each other and sliding horizontally. When it is necessary to shield the open surface of the shell 1, the multiple shielding plates 2 are evenly pulled apart to achieve electromagnetic shielding of the open surface of the shell 1. When it is necessary to repair the transformer, the multiple shielding plates 2 are pushed to one side to be stacked, thereby exposing the open surface of the shell 1, providing sufficient operating space for repairing the transformer.

[0039] The slider 32 has symmetrical slots at both ends. The slider 32 is located in the slide groove 31 and the slots engage with the slide groove 31. The stability between the slider 32 and the slide groove 31 is ensured by the cooperation between the slots and the slide groove 31, thereby preventing the slider 32 from deflecting or falling off.

[0040] Reference Figure 1-12The transformer cover also includes a control mechanism 4 for driving the shielding plate 2 to rotate and a locking mechanism 5 for fixing the outermost shielding plate 2. The control mechanism 4 can accurately control the angular position of the shielding plate 2. Two locking mechanisms 5 are arranged on the same side of the housing 1. The two locking mechanisms 5 are respectively used to lock the two outermost shielding plates 2. In normal use, the control mechanism 4 controls the plurality of shielding plates 2 to be approximately perpendicular to the Z axis, so that the open surface of the shielding housing 1 (such as Figure 2 As shown, during maintenance, the control mechanism 4 controls the plurality of shielding plates 2 to rotate 90° (as shown in FIG. Figure 5 As shown, the shielding plate 2 is in an open state (as shown Figure 3 As shown in FIG. 1 ), the locking mechanism 5 on one side is released, and multiple shielding plates 2 can be stacked toward the side that remains locked and expose the open surface of the housing 1 (as shown in FIG. 1 ). Figure 4 As shown in the figure), after the shielding plate 2 is rotated 90°, the stacking area is greatly reduced, which is conducive to fully exposing the open surface of the housing 1, thereby generating sufficient operating space for the staff to inspect and repair the transformer.

[0041] Reference Figure 6 The shielding plate 2 is a metal plate. The shielding plate 2 includes a main body 24, a sub-board body 1 25 and a sub-board body 26. The sub-board body 1 25 and the sub-board body 26 are rotationally symmetrical along the axis of the rotating shaft 21, so that the cross section of the shielding plate 2 is Z-shaped. When shielding the open surface of the shell 1, the shielding plate 2 is approximately perpendicular to the Z axis. Since the cross section of the shielding plate 2 is Z-shaped, there is an angle between the main body 24 and the Z axis. In this embodiment, the angle between the main body 24 and the Z axis in the horizontal plane is 75°. Therefore, the incident angle of the electromagnetic wave generated by the transformer is at an angle with the main body 24, the sub-board body 1 25 and the sub-board body 26, and is not vertically incident. 4 as an example, after the electromagnetic wave is emitted to the main board body 24, compared with the traditional flat plate, when the electromagnetic wave reaches the surface of the main board body 24, the reflection of the incident wave is consumed once, and the energy that is not reflected by the surface and enters the main board body 24 is absorbed and attenuated by the material characteristics of the main board body 24 during the forward propagation process. The remaining energy that has not been attenuated in the main board body 24 will be reflected again when it is transmitted to the other surface inside the main board body 24, and will return to the main board body 24, and will be reflected multiple times on the two metal interfaces between the main board body 24 and the air, so as to quickly and efficiently consume and absorb the electromagnetic waves and achieve an efficient electromagnetic shielding effect.

[0042] A breathable gap 27 is formed between the sub-plate body 1 25 and the sub-plate body 2 26 of the adjacent shielding plate 2, and the projections in the Z-axis direction overlap. Since the propagation path of electromagnetic waves is a straight line, the projections of the sub-plate body 1 25 and the sub-plate body 2 26 of the adjacent shielding plate 2 in the Z-axis direction overlap to form a misalignment, which can effectively block the leakage of electromagnetic waves and ensure the electromagnetic shielding effect. In addition, due to the existence of the breathable gap 27, the interior of the shell 1 is not a closed space, which is beneficial to the ventilation and heat dissipation of the shell 1. Since the two open surfaces of the shell 1 are in relative positions, the air flow passes through the shell 1 horizontally to achieve exchange, thereby improving the heat dissipation effect of the transformer and ensuring the normal operation of the transformer. Since the cross-section of the shielding plate 2 is Z-shaped, when the sub-plate body 1 25 and the sub-plate body 2 26 of the adjacent shielding plate 2 are misaligned, the bending positions of the sub-plate body 1 25 and the sub-plate body 2 26 correspond to each other, while ensuring the breathable effect, it prevents rain water from entering the shell 1 and causing damage to the transformer.

[0043] Two baffles 11 are provided on the side walls of the open surface of the shell 1, and the two baffles 11 cooperate with the two outermost shielding plates 2 to ensure that the shielding plates 2 completely shield the open surface of the shell 1, thereby improving the electromagnetic shielding effect. The shell 1 has a hollow interlayer, and a corrugated board 12 is provided in the hollow interlayer. The corrugated board 12 is a metal plate. The corrugated board 12 can reduce the material consumption of the shell 1 while ensuring the strength of the shell 1. At the same time, there is an angle between the corrugated board 12 and the incident direction of the ultrasonic wave, which is the same as the electromagnetic shielding method of the shielding plate 2, and has a better electromagnetic shielding effect.

[0044] Reference Fig. 9 A connecting rope 33 is connected between two adjacent sliders 32. The connecting rope 33 is a non-elastic rope. When the multiple shielding plates 2 are pulled apart, the connecting rope 33 limits the position of the two adjacent shielding plates 2, ensuring that the intervals between the shielding plates 2 are consistent. When the multiple shielding plates 2 are pulled apart to the limit position, the two sets of locking mechanisms 5 can just fix the two shielding plates 2 located on the outside.

[0045] Reference Figure 5 and 9 Magnets 34 are installed on both sides of the slider 32. The two magnets 34 are installed at the same height, and the magnetic poles of the magnets 34 on the corresponding surfaces of the two adjacent sliders 32 are opposite. The magnets 34 on the two adjacent sliders 32 will attract each other. After the shielding plate 2 is controlled by the control mechanism 4 to rotate 90°, each shielding plate 2 can be stacked to reduce the occupied space. When the shielding plates 2 are close to each other, the sliders 32 are also close to each other, and the magnetic force of the magnets 34 attracts each other, ensuring that each slider 32 drives the shielding plates 2 to stack into a whole, thereby ensuring the stability of the shielding plates 2 in the stacked state.

[0046] Reference Figure 9-12The control mechanism 4 includes a control board 43. The housing 1 is provided with a positioning rod 41 and a threaded rod 42 which are parallel to each other. The positioning rod 41 is fixedly connected to the housing 1, and the positioning rod 41 is slidably connected to the control board 43. The threaded rod 42 is rotatably connected to the housing 1, and the threaded rod 42 is threadedly connected to the control board 43. The positioning rod 41 guides the control board 43. By rotating the threaded rod 42, the control board 43 can be driven to move along the axial direction of the positioning rod 41. A rotating arm 22 is fixedly provided on the top of the rotating shaft 21. The top of the rotating arm 22 is fixedly provided. An eccentric column 23 eccentrically arranged with the rotating shaft 21 is fixedly provided, and a pressing groove 44 is opened on the control plate 43. The eccentric column 23 extends into the pressing groove 44 and presses against the inner wall of the pressing groove 44. When the control plate 43 moves, the pressing groove 44 presses the eccentric column 23, so that the rotating arm 22 is deflected and drives the rotating shaft 21 to rotate an angle, thereby driving the shielding plate 2 to rotate an angle, and the pressing groove 44 only limits the eccentric column 23 in the Z-axis direction, and the eccentric column 23 can still move in the X-axis direction, thereby realizing the stacking of multiple shielding plates 2.

[0047] Reference Figure 9-12 The locking mechanism 5 includes a mounting rod fixedly arranged on the mounting plate 3, a locking hook 51 is rotatably arranged on the mounting rod, and the locking hook 51 can rotate around the mounting rod, the locking hook 51 includes a bending portion 511 and a pressing portion 512, the bending portion 511 and the pressing portion 512 are respectively located on both sides of the mounting rod, the outer side of the bending portion 511 is inclined and corresponds to the rotating shaft 21, and a semicircular hanging hole 513 adapted to the rotating shaft 21 is formed on the inner side of the bending portion 511. When the shielding plate 2 moves toward the locking hook 51, the rotating shaft 21 will hit the inclined surface of the bending portion 511, so that the locking hook 51 rotates until the semicircular hanging hole 513 is buckled with the rotating shaft 21, and the pressing portion 5 A compression spring 514 is provided between 12 and the housing 1, and a push rod 515 is installed on the side of the pressing portion 512 away from the compression spring 514. The compression spring 514 is used to control the balance of the lock hook 51. When the rotating shaft 21 hits the bent portion 511, the bent portion 511 is deflected outward and reset after the rotating shaft 21 is engaged with the semicircular hanging hole 513, thereby fixing the rotating shaft 21 and further fixing the shielding plate 2. When the contact locking mechanism 5 needs to restrict the shielding plate 2, the push rod 515 is pressed to deflect the lock hook 51, and the semicircular hanging hole 513 is separated from the rotating shaft 21, so that the shielding plate 2 can be pushed to move.

[0048] The specific working principle of the present invention is as follows:

[0049] The transformer is installed inside the shell 1, and multiple shielding plates 2 are pulled open to the extreme position. The two sets of locking mechanisms 5 can just fix the two shielding plates 2 located on the outside. At the same time, the shielding plate 2 is approximately perpendicular to the Z axis, and the angle between the main plate body 24 and the Z axis in the horizontal plane is 75°. The projections of the auxiliary plate body 1 25 and the auxiliary plate body 2 26 of the adjacent shielding plate 2 in the Z axis direction overlap to form a misalignment. The baffle 11 is used to ensure that the shielding plate 2 completely shields the open surface of the shell 1, thereby improving the electromagnetic shielding effect, effectively blocking the leakage of electromagnetic waves, and ensuring the electromagnetic shielding effect.

[0050] When the transformer needs to be repaired, the threaded rod 42 can be rotated to drive the control board 43 to move along the axial direction of the positioning rod 41. When the control board 43 moves, the eccentric column 23 is pressed by the pressing groove 44, so that the rotating arm 22 is deflected and the rotating shaft 21 is driven to rotate an angle, driving the shielding plate 2 to rotate 90 degrees. After the lock hook 51 is deflected by pressing the push rod 515, the semicircular hanging hole 513 is separated from the rotating shaft 21, and the shielding plate 2 is pushed to the side where the restriction of the locking mechanism 5 is not released. The rotating shaft 21 moves along with the slider 32 in the slide groove 3 1, and the eccentric column 23 slides in the pressing groove 44, and the side profiles of the main plate body 24, the auxiliary plate body 1 25 and the auxiliary plate body 2 26 are kept consistent, and finally the bonding is completed. After stacking, the shielding plate 2 occupies a greatly reduced area, which is conducive to fully exposing the open surface of the shell 1, thereby generating sufficient operating space for the staff to inspect the transformer. At the same time, the magnetic force of the magnet 34 attracts each other, ensuring that each slider 32 drives the shielding plates 2 to stack into a whole, thereby ensuring the stability of the shielding plates 2 in the stacked state.

[0051] After the inspection is completed, the shielding plate 2 is pulled back to the initial position, and the connecting rope 33 plays a limiting role on the two adjacent shielding plates 2 to ensure that the spacing between each shielding plate 2 is consistent. When multiple shielding plates 2 are pulled open to the limit position, the rotating shaft 21 on the outermost shielding plate 2 at the movable end will hit the inclined surface of the bent portion 511, causing the locking hook 51 to rotate, and the bent portion 511 deflects outward. After the rotating shaft 21 is engaged with the semicircular hanging hole 513, it is reset under the action of the compression spring 514, so that the semicircular hanging hole 513 is engaged with the rotating shaft 21 to complete the locking, and the threaded rod 42 is rotated in the opposite direction, and the control board 43 moves in the opposite direction, so that the shielding plate 2 is rotated in the opposite direction by 90°, so that the projections of the auxiliary plate body 1 25 and the auxiliary plate body 2 26 of the adjacent shielding plate 2 in the Z-axis direction overlap to form a misalignment, and the initial state is restored. Under the action of the air permeable gap 27, the interior of the shell 1 is not a closed space, which is conducive to ventilation and heat dissipation of the shell 1, improves the heat dissipation effect of the transformer and ensures the normal operation of the transformer.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electromagnetic shielding transformer cover, characterized in that: The invention comprises a shell (1) and a plurality of shielding plates (2), wherein the shell (1) is a rectangular structure, and two side surfaces of the shell (1) perpendicular to the Z-axis direction are open surfaces, and the plurality of shielding plates (2) are divided into two groups, and the plurality of shielding plates (2) in the same group are combined to form a side plate for shielding the open surface of the shell (1), and mounting plates (3) are installed at the upper and lower ends of the side wall of the open surface of the shell (1), and the shielding plate (2) is movably arranged between the two mounting plates (3); It also includes a control mechanism (4) for driving the shielding plate (2) to rotate and a locking mechanism (5) for fixing the outermost shielding plate (2); when the plurality of shielding plates (2) are approximately perpendicular to the Z axis, they will shield the open surface of the housing (1); when the plurality of shielding plates (2) are in an open state, the plurality of shielding plates (2) can be stacked to one side and expose the open surface of the housing (1); The mounting plate (3) is provided with a slide groove (31), and rotating shafts (21) arranged along the Y-axis direction are arranged at both ends of the shielding plate (2). A sliding block (32) is rotatably arranged on the rotating shaft (21), and the sliding block (32) is slidably connected to the slide groove (31); The control mechanism (4) comprises a control panel (43); the housing (1) is provided with a positioning rod (41) and a threaded rod (42) which are parallel to each other; the positioning rod (41) is fixedly connected to the housing (1), and the positioning rod (41) is slidably connected to the control panel (43); the threaded rod (42) is rotatably connected to the housing (1), and the threaded rod (42) is threadedly connected to the control panel (43); a rotating arm (22) is fixedly provided on the top of the rotating shaft (21); an eccentric column (23) which is eccentrically arranged with respect to the rotating shaft (21) is fixedly provided on the top of the rotating arm (22); a pressing groove (44) is provided on the control panel (43); the eccentric column (23) extends into the pressing groove (44) and abuts against the inner wall of the pressing groove (44).

2. The electromagnetic shielding transformer cover according to claim 1, characterized in that: The two ends of the slide block (32) are symmetrically provided with clamping grooves, the slide block (32) is located in the slide groove (31) and the clamping groove is engaged with the slide groove (31).

3. The electromagnetic shielding transformer cover according to claim 1, characterized in that: A connecting rope (33) is connected between two adjacent sliding blocks (32), and the connecting rope (33) is a non-elastic rope.

4. The electromagnetic shielding transformer cover according to claim 1, characterized in that: Magnets (34) are installed on both sides of the slider (32), the two magnets (34) are installed at the same height, and the magnets (34) on corresponding surfaces of two adjacent sliders (32) have opposite magnetic poles.

5. The electromagnetic shielding transformer cover according to claim 1, characterized in that: The shielding plate (2) comprises a main plate body (24), a first auxiliary plate body (25) and a second auxiliary plate body (26), wherein the first auxiliary plate body (25) and the second auxiliary plate body (26) are rotationally symmetrical along the axis of the rotating shaft (21), so that the cross section of the shielding plate (2) is Z-shaped, and when shielding the open surface of the housing (1), a breathable gap (27) is formed between the first auxiliary plate body (25) and the second auxiliary plate body (26) of the adjacent shielding plate (2), and the projections in the Z-axis direction overlap.

6. The electromagnetic shielding transformer cover according to claim 5, characterized in that: The open side wall of the housing (1) is provided with two baffles (11), and the two baffles (11) respectively cooperate with the two shielding plates (2) located at the outermost sides to provide shielding.

7. The electromagnetic shielding transformer cover according to claim 1, characterized in that: Two locking mechanisms (5) are arranged on the same side of the housing (1), and the two locking mechanisms (5) are respectively used to lock the two outermost shielding plates (2). The locking mechanism (5) comprises a mounting rod fixedly arranged on the mounting plate (3), and a locking hook (51) is rotatably arranged on the mounting rod. The locking hook (51) comprises a bent portion (511) and a pressing portion (512). The outer side of the bent portion (511) is inclined and corresponds to the rotating shaft (21), and a semicircular hanging hole (513) adapted to the rotating shaft (21) is formed on the inner side of the bent portion (511). A compression spring (514) is arranged between the pressing portion (512) and the housing (1), and a push rod (515) is installed on the side of the pressing portion (512) away from the compression spring (514).

8. The electromagnetic shielding transformer cover according to claim 1, characterized in that: The outer shell (1) has a hollow interlayer, and a corrugated board (12) is arranged in the hollow interlayer.

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