Coil pressing device of oil-immersed transformer

Abstract

The utility model discloses a coil pressing device of an oil-immersed transformer, and relates to the field of transformers. The coil pressing device of the oil-immersed transformer comprises a workbench and a coil shaft, a controller is arranged at the top of the workbench, a rotating shaft is arranged on the side face of the controller, the coil shaft is fixedly arranged on the outer wall of the rotating shaft through a nut seat, and a wire pressing assembly is arranged at the top of the controller. According to the coil pressing device for the oil-immersed transformer, the coil pressing plate is attached to the outer wall of a coil when the coil is wound outside a coil shaft by moving down the coil pressing plate, coil pressing is conducted on the coil, the attaching degree between the coils is conveniently improved, the size of the coil is easily reduced, and using is convenient; the rotating plate rotates to drive the supporting rod to rotate, the wire pressing plate moves above the rotating shaft, the supporting rod is prevented from shielding and influencing operation of a user on the rotating shaft, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an oil-immersed transformer coil pressing device. Background Art

[0002] Oil-immersed transformers use oil as the main insulation means of the transformer and rely on oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation. The transformer coil is an important part inside the transformer, and the quality of the transformer coil affects the performance of the transformer.

[0003] In the process of manufacturing a transformer, the coil inside the transformer needs to be wound. During the winding process, the coil will generate tension and deformation, which will cause the coils to not fit together, increase the size of the coil, and affect its quality. In addition, the existing device is easy to block the winding during use, affecting the operating efficiency of the staff. Therefore, an oil-immersed transformer coil pressing device is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an oil-immersed transformer coil pressing device, which solves the problem raised in the above background technology that in the process of manufacturing the transformer, the coil inside the transformer needs to be wound, and during the winding process, the coil will generate tension and deform, thereby causing the coils to not fit together, increasing the size of the coil, affecting its quality, and the existing device is easy to block the winding during use, affecting the operating efficiency of the staff.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an oil-immersed transformer coil pressing device, comprising:

[0006] A workbench and a coil shaft, a controller is arranged on the top of the workbench, and a rotating shaft is arranged on the side of the controller, the coil shaft is fixedly arranged on the outer wall of the rotating shaft through a nut seat, a wire pressing assembly is arranged on the top of the controller, and the wire pressing assembly includes:

[0007] A driving unit is arranged on the top of the controller, and the driving unit includes a support rod and a wire pressing plate, the support rod is arranged on the top of the controller, a driving motor is fixedly arranged on the top of the support rod, a telescopic rod is arranged on the bottom output end of the driving motor, and the wire pressing plate is fixedly arranged on the bottom of the telescopic rod, and the wire pressing plate is movably sleeved on the outer wall of the coil shaft;

[0008] The rotating unit is arranged at the bottom of the supporting rod, and the rotating unit is used to adjust the use position of the wire pressing plate.

[0009] Preferably, the rotating unit includes a rotating plate and a positioning rod, the rotating plate is rotatably connected to the top of the controller through a bearing, and the support rod is fixedly arranged on the top of the rotating plate, the positioning rod is inserted through the rotating plate, a first positioning port is opened on the top of the controller, and the bottom of the positioning rod is clamped in the first positioning port.

[0010] Preferably, a second positioning opening is provided on the top of the controller.

[0011] Preferably, a groove is provided inside the rotating plate, and a push plate is movably engaged with the inner wall of the groove provided inside the rotating plate, and the push plate is fixedly arranged on the outer wall of the positioning rod.

[0012] Preferably, a spring bar is fixedly arranged on the inner wall of the groove opened inside the rotating plate, and the other end of the spring bar is fixedly arranged on the push plate.

[0013] Preferably, a pull ring is fixedly provided on the top of the positioning rod.

[0014] Preferably, a pressure sensor is fixedly mounted on the bottom of the wire pressing plate.

[0015] The utility model discloses a coil pressing device for an oil-immersed transformer, which has the following beneficial effects: the coil pressing device for the oil-immersed transformer, by setting a connection relationship among a controller, a coil shaft, a support rod, a wire pressing plate and a pressure sensor, moves the wire pressing plate downward, makes the wire pressing plate fit on the outer wall of the coil when the wire is wound outside the coil shaft, presses the coil, and is convenient for improving the fit between the coils, which is beneficial for reducing the size of the coil and is convenient for use; and by setting a connection relationship among a rotating plate, a positioning rod, a first positioning port and the support rod, the support rod is driven to rotate by the rotation of the rotating plate, so that the wire pressing plate moves from above the rotating shaft, avoids the support rod blocking and affecting the user's operation of the rotating shaft, and is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the wire pressing plate of the utility model;

[0019] Figure 3 This is a cross-sectional view of the rotating plate structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the controller of the utility model.

[0021] In the figure: 1, workbench; 101, controller; 102, rotating shaft; 2, coil shaft; 3, support rod; 301, drive motor; 302, telescopic rod; 303, wire pressing plate; 304, pressure sensor; 4, rotating plate; 401, positioning rod; 402, pull ring; 403, spring bar; 404, push plate; 405, first positioning port; 406, second positioning port. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model discloses an oil-immersed transformer coil pressing device according to the attached Figure 1-4 As shown, including:

[0024] A workbench 1 and a coil shaft 2, a controller 101 is arranged on the top of the workbench 1, and a rotating shaft 102 is arranged on the side of the controller 101, the coil shaft 2 is fixedly arranged on the outer wall of the rotating shaft 102 through a nut seat, the coil shaft 2 is sleeved on the outer wall of the rotating shaft 102, and the nut seat is tightened on the rotating shaft 102, so that the coil shaft 2 is fixedly installed on the rotating shaft 102, and the rotating shaft 102 is rotated to drive the coil shaft 2 to rotate by starting the controller 101, and then other structures are coordinated to make the connecting coil wound on the outer wall of the coil shaft 2, and a wire pressing assembly is arranged on the top of the controller 101, and the wire pressing assembly includes:

[0025] A driving unit is arranged on the top of the controller 101, and the driving unit includes a support rod 3 and a wire pressing plate 303. The support rod 3 is arranged on the top of the controller 101. A driving motor 301 is fixedly arranged on the top of the support rod 3, and a telescopic rod 302 is arranged on the bottom output end of the driving motor 301, and the wire pressing plate 303 is fixedly arranged on the bottom of the telescopic rod 302. The wire pressing plate 303 is movably sleeved on the outer wall of the coil shaft 2. By starting the driving motor 301, the telescopic rod 302 drives the wire pressing plate 303 to move downward, so that the wire pressing plate 303 is attached to the outer wall of the coil when the coil shaft 2 is wound outside, and the coil is pressed;

[0026] The rotating unit is arranged at the bottom of the supporting rod 3 , and the rotating unit is used to adjust the use position of the wire pressing plate 303 .

[0027] The rotating unit includes a rotating plate 4 and a positioning rod 401. The rotating plate 4 is rotatably connected to the top of the controller 101 through a bearing, and the support rod 3 is fixedly arranged on the top of the rotating plate 4. The positioning rod 401 is inserted into the rotating plate 4. A first positioning hole 405 is opened on the top of the controller 101, and the bottom of the positioning rod 401 is clamped in the first positioning hole 405. The user moves the positioning rod 401 upward to disengage the positioning rod 401 from the first positioning hole 405. At this time, the rotating plate 4 is in an active state. The support rod 3 is driven to rotate by rotating the rotating plate 4, so that the wire pressing plate 303 moves from above the rotating shaft 102, so as to avoid the support rod 3 blocking and affecting the user's operation of the rotating shaft 102, which is convenient for use.

[0028] A second positioning hole 406 is provided on the top of the controller 101. The rotating plate 4 drives the positioning rod 401 to rotate after rotation, so that the positioning rod 401 is aligned with the second positioning hole 406. By loosening the upward moving positioning rod 401, the positioning rod 401 moves downward, and the bottom of the positioning rod 401 is stuck in the second positioning hole 406 to fix the use position of the rotating plate 4, thereby preventing the support rod 3 from rotating arbitrarily to block and affect the user's operation of the rotating axis 102.

[0029] A groove is provided inside the rotating plate 4 , and a push plate 404 is movably engaged with the inner wall of the groove provided inside the rotating plate 4 . The push plate 404 is fixedly arranged on the outer wall of the positioning rod 401 to limit the moving path and moving range of the positioning rod 401 .

[0030] A spring bar 403 is fixedly set on the inner wall of the groove opened inside the rotating plate 4, and the other end of the spring bar 403 is fixedly set on the push plate 404. The push plate 404 is automatically pushed downward by the pushing force of the spring bar 403, so that the downward moving push plate 404 drives the positioning rod 401 to move downward, so that the positioning rod 401 maintains a downward position without adjustment.

[0031] A pull ring 402 is fixedly provided on the top of the positioning rod 401 to facilitate the user to hold and adjust the operation.

[0032] A pressure sensor 304 is fixedly installed at the bottom of the wire pressing plate 303, and the drive motor 301 and the pressure sensor 304 are electrically fused. When the coil is wound more and more on the outer wall of the coil shaft 2, the coil and the wire pressing plate 303 are closer and closer, and the force applied by the wire pressing plate 303 to the coil increases. At this time, the force on the pressure sensor 304 increases, and a signal is sent to the drive motor 301, so that the drive motor 301 controls the telescopic rod 302 to move upward, drives the wire pressing plate 303 to move upward, keeps the pressure applied by the wire pressing plate 303 to the coil uniform, and avoids damage to the coil.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coil pressing device for an oil-immersed transformer, comprising a workbench (1) and a coil shaft (2), wherein a controller (101) is arranged on the top of the workbench (1), and a rotating shaft (102) is arranged on the side of the controller (101), and the coil shaft (2) is fixedly arranged on the outer wall of the rotating shaft (102) through a nut seat, characterized in that: A wire pressing assembly is arranged on the top of the controller (101), and the wire pressing assembly comprises: A drive unit, which is arranged on the top of the controller (101), and comprises a support rod (3) and a wire pressing plate (303), wherein the support rod (3) is arranged on the top of the controller (101), a drive motor (301) is fixedly arranged on the top of the support rod (3), a telescopic rod (302) is arranged at the bottom output end of the drive motor (301), and the wire pressing plate (303) is fixedly arranged on the bottom of the telescopic rod (302), and the wire pressing plate (303) is movably sleeved on the outer wall of the coil shaft (2); A rotating unit is arranged at the bottom of the support rod (3), and the rotating unit is used to adjust the use position of the wire pressing plate (303).

2. The oil-immersed transformer coil pressing device according to claim 1, characterized in that: The rotating unit comprises a rotating plate (4) and a positioning rod (401); the rotating plate (4) is rotatably connected to the top of the controller (101) via a bearing, and the support rod (3) is fixedly arranged on the top of the rotating plate (4); the positioning rod (401) penetrates and is plugged into the rotating plate (4); a first positioning opening (405) is provided on the top of the controller (101), and the bottom of the positioning rod (401) is clamped in the first positioning opening (405).

3. The oil-immersed transformer coil pressing device according to claim 2, characterized in that: A second positioning opening (406) is provided on the top of the controller (101).

4. The oil-immersed transformer coil pressing device according to claim 3, characterized in that: A groove is provided inside the rotating plate (4), and a push plate (404) is movably engaged with the inner wall of the groove provided inside the rotating plate (4), and the push plate (404) is fixedly arranged on the outer wall of the positioning rod (401).

5. The oil-immersed transformer coil pressing device according to claim 4, characterized in that: A spring bar (403) is fixedly arranged on the inner wall of the groove opened inside the rotating plate (4), and the other end of the spring bar (403) is fixedly arranged on the push plate (404).

6. The oil-immersed transformer coil pressing device according to claim 5, characterized in that: A pull ring (402) is fixedly arranged on the top of the positioning rod (401).

7. The oil-immersed transformer coil pressing device according to claim 1, characterized in that: A pressure sensor (304) is fixedly mounted on the bottom of the wire pressing plate (303).

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