An electric shielding structure for the riser of a motor transformer

Abstract

The present invention discloses an electric shielding structure for a motor transformer elevation seat, comprising two shielding shells, the two shielding shells being arranged in a corresponding covering manner, one end of each shielding shell being provided with an opening corresponding to the elevation seat, and two sealing gaskets being fixedly provided at the opening, both of which are fixedly provided at the openings of the two shielding shells by a fixing mechanism, the two shielding shells being provided with corresponding covering and tightening mechanisms, and the inner walls of each shielding shell being provided with side grooves, both of which are arranged in a U-shape to fit the shielding shells, and a plurality of shielding plates being slidably provided in each of the side grooves, and the plurality of shielding plates being arranged sequentially from the inside to the outside. The present invention can be quickly installed on the elevation seat of the transformer, and can achieve electric shielding by performing airtight isolation, and can pop out the shielding plates of the retractable grooves as the elevation seat is raised or lowered, so that the electric shielding structure can adapt to the raising and lowering and continuously maintain a point shielding state.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer electric shielding, in particular to an electric shielding structure for a motor transformer elevation seat. Background Art

[0002] A shielding measure that uses conductive material grounding to suppress electric field coupling interference between common ground circuits. Two common ground circuits are separated by a grounded shielding box, shell, or plate. The electric field generated by the high-potential circuit is blocked by the shield, and the charge induced on the shield enters the ground through the grounding point, thereby suppressing the electric field coupling interference. This is like a hollow, sealed metal box placed in an electric field. Regardless of the electric field strength outside the box, there is no electric field inside the box. The electric field inside the box is visually zero, and the entire metal box is an isothermal body. This is called an electric field shield. Electric shielding is used to prevent high-voltage field strength from interfering with components. The design principle of electric shielding is to use the shielding body to minimize the distributed capacitance between the interference source and the receptor, thereby reducing the impact of the interference source on the receptor.

[0003] When using motor transformers, some larger transformers often need to adapt to the transformer's riser for height adjustment. In order to prevent the strong electric field around the transformer from interfering with the control circuit of the riser, the riser often needs to be electrically shielded. However, due to the lifting characteristics of the riser, the traditional electric shielding structure is difficult to adapt and use. For this reason, we propose an electric shielding structure for the motor transformer riser to solve the above problem. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an electric shielding structure for a motor transformer riser.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The invention relates to an electric shielding structure for an elevated seat of a motor transformer, comprising two shielding shells, the two shielding shells being arranged to cover each other, one end of the two shielding shells being provided with an opening corresponding to the elevated seat, and two sealing gaskets being fixedly provided at the openings, the two sealing gaskets being fixedly provided at the openings of the two shielding shells by a fixing mechanism, the two shielding shells being provided with corresponding covering and tightening mechanisms, and the inner walls of the two shielding shells being provided with side grooves, the two side grooves being provided with a U-shaped arrangement that fits the shielding shells, a plurality of shielding plates being slidably provided in the two side grooves, the plurality of shielding plates being arranged in sequence from the inside to the outside, the inner shielding plate being slidably provided on the inner wall of the outer shielding plate by a slider, and the outermost shielding plate being slidably provided on the inner wall of the side groove by a slider, the shielding plate and the inner wall of the side groove being provided with lifting grooves corresponding to the sliders, each of the sliders being connected to the side wall of the lifting groove by a third spring, a sealing sleeve being fixedly provided on the outer wall of each shielding plate, and the two shielding shells being provided with corresponding clamping mechanisms.

[0007] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the fixing mechanism includes two plug-in plates, and the openings of the two shielding shells are provided with slots corresponding to the plug-in plates, and the side walls on both sides of the two slots are provided with receiving slots, and a card block is slidably arranged in each of the receiving slots, and several of the card blocks are connected to the inner wall of the receiving slot through a second spring, and the side wall of each card block close to the slot is inclined, and the side walls of the two plug-in plates are provided with slots corresponding to the card block, and a lever is fixed on the side wall of each card block, and several of the levers are slid through the upper wall of the shielding shell, and the upper wall of the shielding shell is provided with several strip-shaped sliding openings corresponding to the levers.

[0008] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the covering and tightening mechanism includes two tensioning plates, and the two tensioning plates are respectively slidably arranged on the two side walls of a shielding shell through sliding blocks, and the two side walls of the shielding shell are provided with sliding grooves corresponding to the sliding blocks, and second threaded rods are rotatably arranged in the two sliding grooves, and the two second threaded rods are respectively rotated to pass through the two sliding blocks, and threaded through holes corresponding to the second threaded rods are provided on the two sliding blocks, and one end of the two second threaded rods is rotated to pass through the side wall of the shielding shell and is fixedly connected with a second handle, and the two tensioning plates are provided with a connecting mechanism corresponding to the shielding shell.

[0009] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the connecting mechanism includes two card plates, and the two tensioning plates are provided with telescopic grooves corresponding to the card plates on the side walls close to the shielding shell. The two card plates are respectively slidably arranged in the two telescopic grooves, and each of the card plates is connected to the inner wall of the telescopic groove through a first spring. The side walls of the two card plates away from the sliding block are inclined, and the side walls of the shielding shell away from the sliding block are provided with card slots corresponding to the card plates, and the two card plates are provided with corresponding pulling mechanisms.

[0010] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the pulling mechanism includes two pull rods, which are respectively fixed on the side walls of one end of the two clamping plates close to the first spring, and the two pull rods slide through the side walls of the two tensioning plates respectively, and the ends of the two pull rods away from the clamping plates are fixedly connected with pull handles.

[0011] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the clamping mechanism includes two clamping plates, and the side walls of the two shielding shells are fixedly provided with side plates, and the two clamping plates are respectively slidably provided on the two side plates through slides, and the two side plates are provided with sliding grooves corresponding to the slides, and the two sliding grooves are rotatably provided with first threaded rods, and the two first threaded rods are rotated to pass through the two slides, and the two slides are provided with threaded through holes corresponding to the first threaded rods, and one end of the two first threaded rods is rotated to pass through the side walls of the two side plates and fixedly connected with a first turning handle.

[0012] The advantages of the present invention are: through the cooperation of the slider and the third spring, the shielding plate can be quickly popped out when the lifting seat is raised, and through the combination of the shielding plate and the shielding shell, the lifting seat can be continuously isolated and shielded when it is raised or lowered, maintaining the electric shielding effect, and avoiding the transformer electric field from affecting the operation of the lifting seat. Through the cooperation of the second threaded rod and the sliding block, the tensioning plate is controlled, and then through the cooperation of the card plate and the card slot, the tensioning plate and the shielding shell are connected, so that the two shielding shells can be tightened, and a closed environment is formed in cooperation with the sealing gasket, thereby realizing electric shielding of the lifting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric shielding structure for a motor transformer elevation seat proposed by the present invention;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure from another angle of the electric shielding structure for the motor transformer elevation stand proposed by the present invention;

[0015] Figure 3This is a schematic top view of the electric shielding structure for a motor transformer elevation stand proposed by the present invention;

[0016] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0017] Figure 5 This is a side structural schematic diagram of an electric shielding structure for a motor transformer elevation seat proposed by the present invention.

[0018] In the figure: 1 shielding shell, 2 sealing gasket, 3 side plate, 4 sliding groove, 5 slide plate, 6 first threaded rod, 7 splint, 8 first turning handle, 9 toggle lever, 10 sliding groove, 11 sliding block, 12 tensioning plate, 13 second threaded rod, 14 second turning handle, 15 clamping plate, 16 pull rod, 17 pull handle, 18 shielding plate, 19 plug-in plate, 20 telescopic groove, 21 first spring, 22 slot, 23 clamping block, 24 second spring, 25 storage groove, 26 third spring, 27 side groove, 28 slider. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Reference Figure 1-Figure 5As shown, an electric shielding structure for a motor transformer elevation seat includes two shielding shells 1, the two shielding shells 1 are arranged in a corresponding covering manner, one end of the two shielding shells 1 is provided with an opening corresponding to the elevation seat, and two sealing gaskets 2 are fixedly provided at the openings, and the two sealing gaskets 2 are fixed to the openings of the two shielding shells 1 by a fixing mechanism, the fixing mechanism includes two plug-in plates 19, the openings of the two shielding shells 1 are provided with slots 22 corresponding to the plug-in plates 19, and the side walls of the two slots 22 are provided with receiving grooves 25, each receiving groove 25 is slidably provided with a card block 23, and several card blocks 23 are connected to the inner wall of the receiving groove 25 by a second spring 24, and the side wall of each card block 23 close to the slot 22 is inclined. The side walls of 19 are provided with card slots corresponding to the card blocks 23, and a lever 9 is fixedly provided on the side walls of each card block 23. Several levers 9 are slidably passed through the upper wall of the shielding shell 1, and the upper wall of the shielding shell 1 is provided with several strip-shaped sliding openings corresponding to the lever 9. The two shielding shells 1 are provided with corresponding covering and tightening mechanisms, and the covering and tightening mechanisms include two tensioning plates 12, and the two tensioning plates 12 are respectively slidably provided on the side walls of a shielding shell 1 through the sliding blocks 11. Sliding grooves 10 corresponding to the sliding blocks 11 are provided on the side walls of the shielding shell 1, and second threaded rods 13 are rotatably provided in the two sliding grooves 10. The two second threaded rods 13 are respectively rotated to pass through the two sliding blocks 11, and the two sliding blocks 11 are provided with a second threaded rod 13. The threaded through hole corresponding to the threaded rod 13, one end of the two second threaded rods 13 are rotated to pass through the side wall of the shielding shell 1 and are fixedly connected with a second handle 14, and the two tensioning plates 12 are provided with a connecting mechanism corresponding to the shielding shell 1, and the connecting mechanism includes two card plates 15, and the two tensioning plates 12 are provided with a telescopic groove 20 corresponding to the card plate 15 on the side wall close to the shielding shell 1. The two card plates 15 are slidably arranged in the two telescopic grooves 20, and each card plate 15 is connected to the inner wall of the telescopic groove 20 through a first spring 21. The side wall of the two card plates 15 away from the sliding block 11 is inclined, and the side walls of the shielding shell 1 away from the sliding block 11 are provided with a card slot corresponding to the card plate 15, and the two card plates 15 are provided with a card slot corresponding to it. The corresponding pulling mechanism includes two pull rods 16, which are respectively fixed on the side walls of the two card plates 15 at one end close to the first spring 21, and the two pull rods 16 slide through the side walls of the two tensioning plates 12 respectively. The ends of the two pull rods 16 away from the card plates 15 are fixedly connected with pull handles 17, and side grooves 27 are provided on the inner walls of the two shielding shells 1. The two side grooves 27 are both fitted with the U-shaped setting of the shielding shell 1. Several shielding plates 18 are slidably set in the two side grooves 27. The several shielding plates 18 are arranged in sequence from the inside to the outside. The inner shielding plate 18 is slidably set on the inner wall of the outer shielding plate 18 through the slider 28, and the outermost shielding plate 18 is slidably set on the inner wall of the side groove 27 through the slider 28.The shielding plate 18 and the inner wall of the side groove 27 are provided with a lifting groove corresponding to the slider 28. Each slider 28 is connected to the side wall of the lifting groove through a third spring 26. A sealing sleeve is fixedly provided on the outer wall of each shielding plate 18. The two shielding shells 1 are provided with a corresponding clamping mechanism. The clamping mechanism includes two clamping plates 7. The side walls of the two shielding shells 1 are fixed with side plates 3. The two clamping plates 7 are respectively slidably set on the two side plates 3 through the slides 5. The two side plates 3 are provided with a sliding groove 4 corresponding to the slide 5. The first threaded rods 6 are rotatably set in the two sliding grooves 4. The two first threaded rods 6 are rotated to pass through the two slides 5. The two slides 5 are provided with threaded through holes corresponding to the first threaded rods 6. One end of the two first threaded rods 6 is rotated to pass through the side walls of the two side plates 3 and is fixedly connected with the first turning handle 8. The cooperation with the third spring 26 enables the shielding plate 18 to pop out quickly when the lifting seat is raised. The combination of the shielding plate 18 and the shielding shell 1 can achieve continuous isolation and shielding of the lifting seat when it is raised or lowered, maintain the electric shielding effect, and prevent the transformer electric field from affecting the operation of the lifting seat. The cooperation of the second threaded rod 13 and the sliding block 11 realizes the control of the tensioning plate 12, and the cooperation of the clamping plate 15 and the clamping slot realizes the connection between the tensioning plate 12 and the shielding shell 1, so that the two shielding shells 1 can be tightened and a closed environment is formed in conjunction with the sealing gasket 2, thereby achieving electrical shielding of the lifting seat. The cooperation of the shifting rod 9 and the clamping block 23 realizes the detachable sealing gasket 2, which is convenient for replacing the sealing gasket 2 to ensure the sealing effect with the lifting seat. The two clamping plates 7 are provided to facilitate the clamping and fixing of the shielding shell 1 on the transformer.

[0021] In the process of electric shielding of the transformer lifting seat of the present invention, the shielding shell 1 is first fitted and installed from both sides of the lifting seat respectively. After the lifting seat is covered, the clamping plate 15 is placed into the two clamping grooves on the shielding shell 1, and the second threaded rod 13 is rotated to tighten the two shielding shells 1. Then, the two first threaded rods 6 are rotated to drive the two clamping plates 7 to clamp on the transformer to complete the installation of the device. When the lifting seat is raised, the shielding plate 18 can be quickly popped out. Through the combination of the shielding plate 18 and the shielding shell 1, the lifting seat can be continuously isolated and shielded when it is raised or lowered, thereby maintaining the electric shielding effect and avoiding the influence of the transformer electric field on the operation of the lifting seat.

[0022] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An electric shielding structure for a motor transformer riser, comprising two shielding shells (1), characterized in that: The two shielding shells (1) are arranged in a corresponding covering manner, one end of the two shielding shells (1) is provided with an opening corresponding to the lifting seat, and two sealing gaskets (2) are fixedly provided at the opening, and the two sealing gaskets (2) are fixed to the openings of the two shielding shells (1) through a fixing mechanism, the two shielding shells (1) are provided with a corresponding covering and tightening mechanism, and the inner walls of the two shielding shells (1) are provided with side grooves (27), the two side grooves (27) are both fitted with the shielding shell (1) U-shaped setting, and a plurality of shielding plates (18) are slidably provided in the two side grooves (27), and the plurality of shielding plates ( 18) are arranged in sequence from the inside to the outside, the inner shielding plate (18) is slidably arranged on the inner wall of the outer shielding plate (18) through the slider (28), and the outermost shielding plate (18) is slidably arranged on the inner wall of the side groove (27) through the slider (28), and the shielding plate (18) and the inner wall of the side groove (27) are both provided with lifting grooves corresponding to the slider (28), each of the sliders (28) is connected to the side wall of the lifting groove through a third spring (26), and a sealing sleeve is fixedly provided on the outer wall of each shielding plate (18), and the two shielding shells (1) are provided with corresponding clamping mechanisms.

2. The electric shielding structure for a motor transformer elevation seat according to claim 1, characterized in that: The fixing mechanism comprises two plug-in plates (19), the openings of the two shielding shells (1) are provided with slots (22) corresponding to the plug-in plates (19), the side walls of the two slots (22) are provided with receiving slots (25), each receiving slot (25) is provided with a card block (23) for sliding, a plurality of the card blocks (23) are connected to the inner wall of the receiving slot (25) through a second spring (24), the side wall of each card block (23) close to the slot (22) is inclined, the side walls of the two plug-in plates (19) are provided with slots corresponding to the card block (23), a shift rod (9) is fixedly provided on the side wall of each card block (23), a plurality of the shift rods (9) are slidably arranged to penetrate the upper wall of the shielding shell (1), and the upper wall of the shielding shell (1) is provided with a plurality of strip-shaped sliding openings corresponding to the shift rods (9).

3. The electric shielding structure for a motor transformer elevation seat according to claim 1, characterized in that: The covering and tightening mechanism includes two tensioning plates (12), and the two tensioning plates (12) are respectively slidably arranged on the side walls of a shielding shell (1) through a sliding block (11). The side walls of the shielding shell (1) are provided with sliding grooves (10) corresponding to the sliding blocks (11). A second threaded rod (13) is rotatably arranged in the two sliding grooves (10). The two second threaded rods (13) are respectively rotated to pass through the two sliding blocks (11). The two sliding blocks (11) are provided with threaded through holes corresponding to the second threaded rod (13). One end of the two second threaded rods (13) is rotated to pass through the side wall of the shielding shell (1) and is fixedly connected with a second handle (14). The two tensioning plates (12) are provided with a connecting mechanism corresponding to the shielding shell (1).

4. The electric shielding structure for a motor transformer elevation seat according to claim 3, characterized in that: The connecting mechanism includes two card plates (15), and a telescopic groove (20) corresponding to the card plate (15) is provided on the side wall of the two tensioning plates (12) close to the shielding shell (1). The two card plates (15) are respectively slidably arranged in the two telescopic grooves (20), and each of the card plates (15) is connected to the inner wall of the telescopic groove (20) through a first spring (21). The side walls of the two card plates (15) away from the sliding block (11) are inclined, and the side walls of the shielding shell (1) away from the sliding block (11) are provided with card grooves corresponding to the card plate (15), and the two card plates (15) are provided with corresponding pulling mechanisms.

5. The electric shielding structure for a motor transformer elevation seat according to claim 4, characterized in that: The pulling mechanism includes two pull rods (16), and the two pull rods (16) are respectively fixedly arranged on the side walls of one end of the two clamping plates (15) close to the first spring (21), and the two pull rods (16) are respectively slid through the side walls of the two tensioning plates (12), and the ends of the two pull rods (16) away from the clamping plates (15) are fixedly connected with pull handles (17).

6. The electric shielding structure for a motor transformer elevation seat according to claim 1, characterized in that: The clamping mechanism comprises two clamping plates (7), side plates (3) are fixedly provided on the side walls of the two shielding shells (1), the two clamping plates (7) are respectively slidably provided on the two side plates (3) through slide plates (5), the two side plates (3) are provided with sliding grooves (4) corresponding to the slide plates (5), the two sliding grooves (4) are rotatably provided with first threaded rods (6), the two first threaded rods (6) are rotatably passed through the two slide plates (5), the two slide plates (5) are provided with threaded through holes corresponding to the first threaded rods (6), one end of the two first threaded rods (6) are respectively rotatably passed through the side walls of the two side plates (3) and fixedly connected with first turning handles (8).

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