Paint dipping hanger for annular iron core of transformer

Abstract

A paint dipping hanger for an annular iron core of a transformer comprises a plurality of vertically-arranged hanging units, the lower end of the hanging unit located at the upper end between every two adjacent hanging units is connected to the upper end of the hanging unit located at the lower end, a driving part is arranged at the upper end of the hanging unit located at the top end, and a lower cover is arranged at the lower end of the hanging unit located at the bottom end. The lower cover can prevent paint from entering the hanging tool, the hanging unit can act on the inner circumference of the iron core so as to fix the iron core, paint dipping is convenient after fixation, and the iron core is convenient to take out after paint dipping.

Description

Technical Field

[0001] This utility model relates to the field of transformer processing technology, and specifically to a transformer toroidal core impregnation fixture. Background Technology

[0002] Transformer toroidal cores are typically made by winding silicon steel sheets. After winding, welding and straightening are performed to achieve a regular toroidal structure. To reduce eddy current losses between the layers of material inside the core and to enhance the overall structural stability, vacuum impregnation is often used to coat the toroidal core. Currently, the toroidal core is often hung on a pole for impregnation, but this method can easily lead to incomplete impregnation in some areas. If the toroidal core is directly immersed in the varnish, the impregnation effect is difficult to control, and removing the core is also inconvenient. Utility Model Content

[0003] This utility model provides a transformer toroidal core varnishing hanger to overcome the shortcomings of the prior art and solve the problem of large areas without varnish during varnishing, thus having strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A transformer toroidal core varnish-impregnating fixture includes multiple vertically arranged mounting units. The upper mounting unit is connected at its lower end to the upper end of the lower mounting unit. The upper mounting unit at the top has a driving section, and the lower mounting unit at the bottom has a lower cover. The lower cover prevents varnish from entering the fixture, while the mounting units act on the inner circumference of the core to secure it. This secure mounting facilitates varnish impregnation and allows for easy removal of the core after varnishing.

[0006] Furthermore, the mounting unit includes a tube body. The upper end of the tube body has an external threaded ring, and the lower end of the tube body has a limiting ring on its outer periphery. An internal threaded ring is fitted around the outer periphery of the limiting ring. An upper ring is located at the upper end of the internal threaded ring, positioned above the limiting ring. An upper plate is connected to the upper end of the tube body via a pin, and a lower plate is connected to the lower end of the tube body via a pin. A lead screw is rotatably mounted between the upper and lower plates, ensuring the stability of the lead screw's rotation. Limiting nuts are located at both ends of the lead screw. The upper limit nut is located above the upper plate, and the lower limit nut is located below the lower plate, preventing the lead screw from moving axially relative to the upper and lower plates. The upper end of the lead screw has multiple insert plates, and the lower end has multiple slots. A movable cone is threaded onto the lead screw. The upper outer circumference of the movable cone is conical, with the upper end being the smaller end. The inner wall of the tube has multiple guide strips, and the outer circumference of the movable cone has a limit groove. The guide strips pass through the limit groove and guide the movement of the movable cone. Multiple clamping plates are inserted through the outer circumference of the tube. The inner end of the clamping plate has an inner plate, and the inner end of the inner plate is formed with an inclined surface. The inclined surface contacts the outer circumference of the movable cone. When the movable cone moves, it acts on the inclined surface through its circumference, causing the clamping plate to move outward. This causes the outer end of the clamping plate to press against the inner circumference of the iron core, thereby achieving the purpose of fixing the iron filings.

[0007] When two adjacent mounting units are connected, the internal threaded ring on the upper mounting unit is threadedly connected to the external threaded ring on the lower mounting unit. The insert plate on the lower mounting unit is inserted into the slot on the upper mounting unit. Through the setting of the slot and the insert plate, the drive unit can drive the rotation of the lead screw on each mounting unit, thereby performing multiple iron core fixing and mounting operations simultaneously.

[0008] Furthermore, to prevent paint from entering the tube body through the mounting units, an inner tube is provided at the upper end of the external threaded ring. The inner tube and the outer circumference of the external threaded ring are connected by a conical wall. The lower end of the tube body is formed with an inner conical surface. The inner tube on the upper mounting unit passes through the lower end of the tube body on the lower mounting unit. When connected, the conical wall acts on the inner circumference of the inner conical surface.

[0009] Furthermore, in order to enable the top clamping plate to automatically return to its original position, i.e. move inward, a V-shaped spring is provided on the inner plate, with both ends of the V-shaped spring fixed to the inner wall of the tube.

[0010] Furthermore, in order to reduce the contact area between the top clamping plate and the inner circumference of the iron core, a wedge-shaped structure is formed at the outer end of the top clamping plate.

[0011] Furthermore, in order to scrape off the paint on the outer wall of the top clamping plate, a scraper is fitted on the top clamping plate, and the inner circumference of the scraper has a blade-shaped structure.

[0012] Furthermore, in order to facilitate the driving rotation of the lead screw on the mounting unit, the driving part includes a tube cap that is installed on the inner tube by a pin. The upper end of the tube cap is rotatably provided with a rotating rod, the upper end of the rotating rod is provided with a screw cap, the lower end of the rotating rod is provided with a limiting inner ring, the limiting inner ring is located inside the tube cap, the lower end of the rotating rod is provided with a lower extension rod, and multiple connecting grooves are opened on the lower extension rod. The insert plate on the mounting unit at the top is inserted into the connecting groove.

[0013] Furthermore, to prevent paint from entering the tube body from the lower end, the lower cover includes a connecting inner ring, which is threadedly connected to an internal threaded ring on the mounting unit located at the bottom end, and a sealing plate is provided at the lower end of the connecting inner ring.

[0014] The advantages of the above technical solution are:

[0015] This invention can fix the iron core with a small contact area, thereby ensuring the coating effect. At the same time, it facilitates the removal of the iron core after coating, and the coating can be replenished by recoating after removal. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0017] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0018] Figure 2 A cross-sectional structural diagram of one embodiment is shown.

[0019] Figure 3 A magnified view of point A is shown.

[0020] Figure 4 A magnified view of point B is shown.

[0021] Figure 5 A three-dimensional structural diagram of the mounting unit is shown.

[0022] Figure 6 A cross-sectional structural diagram of the mounting unit is shown. Detailed Implementation

[0023] like Figures 1-6 As shown, a transformer toroidal core impregnation fixture includes multiple vertically arranged mounting units 1. The upper mounting unit 1 is connected at its lower end to the upper end of the lower mounting unit 1 between adjacent mounting units 1. The upper end of the top mounting unit 1 is provided with a driving part 2. The lower end of the bottom mounting unit 1 is provided with a lower cover 3.

[0024] The mounting unit 1 includes a pipe body 100. The upper end of the pipe body 100 is provided with an external threaded ring 13. The lower end of the pipe body 100 is provided with a limiting ring 56. The outer periphery of the limiting ring 56 is fitted with an internal threaded ring 58. The upper end of the internal threaded ring 58 is provided with an upper ring 57, which is located at the upper end of the limiting ring 56.

[0025] The upper end of the tube body 100 is connected to the upper plate 15 by a pin, and the lower end of the tube body 100 is connected to the lower plate 19 by a pin. A lead screw 16 is rotatably provided between the upper plate 15 and the lower plate 19. The upper and lower ends of the lead screw 16 are respectively provided with limiting nuts 17. The limiting nut 17 at the upper end is located on the upper side of the upper plate 15, and the limiting nut 17 at the lower end is located on the lower side of the lower plate 19. The upper end of the lead screw 16 is provided with multiple insert plates 18, and the lower end of the lead screw 16 is provided with multiple slots.

[0026] A movable cone 50 is connected to the lead screw 16 by a thread. The upper outer periphery of the movable cone 50 has a conical structure, and the upper end of the movable cone 50 is the small end. The inner wall of the tube body 100 is provided with multiple guide bars 52. A limiting groove 51 is opened on the outer periphery of the movable cone 50, and the guide bars 52 pass through the limiting groove 51.

[0027] Multiple clamping plates 10 are installed on the outer periphery of the tube body 100. An inner plate 54 is provided on the inner end of each clamping plate 10. The inner end of the inner plate 54 has an inclined surface that contacts the outer periphery of the movable cone 50. A V-shaped spring piece 55 is provided on the inner plate 54, with both ends of the V-shaped spring piece 55 fixed to the inner wall of the tube body 100. The outer end of the clamping plate 10 has a wedge-shaped structure. A scraper 12 is fitted onto the clamping plate 10. The inner periphery of the scraper 12 has a blade-shaped structure, and the scraper 12 is installed on the outer periphery of the tube body 100.

[0028] The upper end of the external threaded ring 13 is provided with an inner tube 14, and the inner tube 14 and the outer periphery of the external threaded ring 13 are connected by a conical wall. The lower end of the tube body 100 is formed with an inner conical surface 59.

[0029] When two adjacent mounting units 1 are connected, the internal threaded ring 58 on the upper mounting unit 1 is threadedly connected to the external threaded ring 13 on the lower mounting unit 1. The insert plate 18 on the lower mounting unit 1 is inserted into the slot on the upper mounting unit 1. The inner tube 14 on the upper mounting unit 1 passes through the lower end of the tube body 100 on the lower mounting unit 1, and when connected, the conical wall acts on the inner circumference of the inner conical surface 59.

[0030] The drive unit 2 includes a tube cap 20 mounted on the inner tube 14 by a pin. The upper end of the tube cap 20 is rotatably provided with a rotating rod 23. The upper end of the rotating rod 23 is provided with a screw cap 22. The lower end of the rotating rod 23 is provided with a limiting inner ring 24, which is located inside the tube cap 20. The lower end of the rotating rod 23 is provided with a lower extension rod 25. Multiple connecting slots are opened on the lower extension rod 25. The insert plate 18 on the top mounting unit 1 passes through the connecting slot.

[0031] The lower cover 3 includes a connecting inner ring 30, which is threadedly connected to an internal threaded ring 58 on the mounting unit 1 located at the bottom end. The lower end of the connecting inner ring 30 is provided with a sealing plate 31.

[0032] In this embodiment, during operation, the operator places the iron cores with their periphery in contact with the tabletop in sequence on the table.

[0033] The operator then inserts the paint-impregnating hanger into the iron core. During insertion, it is necessary to ensure that each iron core has a set of clamping plates 10.

[0034] Next, the operator holds the mounting unit 1 with one hand and uses a screwdriver or similar tool to rotate the screw cap 22 with the other hand. When the screw cap 22 rotates, it will drive each lead screw 16 to rotate. When the lead screw 16 rotates, it will drive the movable cone 50 on it to move. When the movable cone 50 moves, its outer periphery will act on the inclined plane, thereby causing the clamping plate 10 to move outward until the outer end of the clamping plate 10 is pressed against the inner periphery of the iron core.

[0035] The operator then hangs the paint-dipping fixture and its iron core on the rack, immerses the iron core in paint, and performs the paint-dipping operation. During the paint-dipping process, because there are no obstructions on the upper and lower ends of the iron core, it is easy for the paint to penetrate between the layers of the iron core, thereby improving the paint-dipping effect between the iron core layers.

[0036] After the impregnation is complete, the operator removes the impregnation rack and proceeds with curing. Once cured, the iron core is removed, and the contact area between the clamping plate and the iron core is repaired by spraying paint, followed by another curing process. During spraying, the iron cores can be stacked before application.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A transformer toroidal core impregnation hanger, characterized by, The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3).

2. The transformer toroidal core paint dipping hanger according to claim 1, wherein, The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3).

3. The transformer toroidal core paint dipping hanger according to claim 2, wherein, The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); 4. The transformer toroidal core paint dipping hanger according to claim 2, wherein, The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3).

5. The transformer toroidal core paint dipping hanger of claim 2, wherein, The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); 6. The transformer toroidal core paint dipping hanger of claim 2, wherein, The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on the outer periphery of the limiting ring (56), an upper ring (57) is arranged at the upper end of the inner threaded ring (58), and the upper ring (57) is located at the upper end of the limiting ring (56); The upper end of the mounting unit (1) at the top end is provided with a driving part (2); The lower end of the mounting unit (1) at the bottom end is provided with a lower cover (3). The mounting unit (1) comprises a pipe body (100), an outer threaded ring (13) is arranged at the upper end of the pipe body (100), a limiting ring (56) is arranged at the outer periphery of the lower end of the pipe body (100), an inner threaded ring (58) is sleeved on 7. The transformer toroidal core paint dipping hanger according to claim 3, wherein, The driving part (2) comprises a pipe cap (20) mounted on the inner tube (14) through a pin, the upper end of the pipe cap (20) is rotationally provided with a rotating rod (23), the upper end of the rotating rod (23) is provided with a screw cap (22), the lower end of the rotating rod (23) is provided with a limiting inner ring (24), the limiting inner ring (24) is located on the inner side of the pipe cap (20), the lower end of the rotating rod (23) is provided with a lower extension rod (25), a plurality of connecting grooves are formed in the lower extension rod (25), and the plug-in plate (18) on the mounting unit (1) at the top is arranged in the connecting grooves.

8. The transformer toroidal core paint dipping hanger according to claim 2, wherein, The lower cover (3) comprises a connecting inner ring (30), the connecting inner ring (30) is threadedly connected into an inner threaded ring (58) on the mounting unit (1) at the bottom, and the lower end of the connecting inner ring (30) is provided with a sealing disc (31).

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