A transformer winding anti-rotation structure

Abstract

The utility model discloses a mutual -inductor winding anti -rotation structure relates to mutual -inductor technical field, including mutual -inductor body, the front side of mutual -inductor body is provided with the anti -rotation mechanism for the fixed of winding, and the anti -rotation mechanism includes: adjusting unit and drive unit, and adjusting unit sets up in the front side of mutual -inductor body, including the fixed box of fixed installation in the front side of mutual -inductor body, the rear side of fixed box is provided with four groups of cross sliding slot, and the inside sliding installation of cross sliding slot has cross sliding block, through the cooperative design of worm gear drive and gear rack, has realized the stable self -locking of winding and prevents loose, and rotates the worm drive worm wheel and drives gear, and gear and semicircle rack engage and push round plate rotation. The irreversible characteristic of worm wheel and worm ensures that the clamping force keeps long, avoids the winding displacement caused by traditional adhesive aging or buckle loosening. Significantly improved the reliability of mutual -inductor in long -term operation, especially applicable to the industrial environment of frequent vibration.

Description

Technical Field

[0001] This utility model relates to the field of instrument transformer technology, specifically to an anti-rotation structure for instrument transformer windings. Background Technology

[0002] Instrument transformers, also known as instrument transformers, are a general term for current transformers and voltage transformers. They can transform high voltage into low voltage and large current into small current for measurement or protection systems. Their main function is to transform high voltage or large current into standard low voltage or standard small current in a proportional manner, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At the same time, instrument transformers can also be used to isolate high voltage systems to ensure the safety of personnel and equipment.

[0003] According to the patent titled "Anti-rotation Structure for Current Transformer Winding" (Patent Publication No.: CN222600717U, Patent Publication Date: 2025-03-11), the structure includes: a winding body, a support base fixedly connected to the lower part of the winding body, mounting blocks fixedly connected to both sides of the winding body, connecting strips fixedly connected to the lower part of each of the two mounting blocks, connecting components provided below each of the two connecting strips, limiting seats fixedly connected to the lower part of each of the two connecting strips, limiting groove one provided above each of the two limiting seats, and limiting groove two provided on one side of the inner wall of each of the two limiting grooves one; by setting the connecting components and limiting seats, the winding body remains stable during operation, preventing its performance from being affected by rotation, while also facilitating the disassembly, assembly, and maintenance of the winding body by workers, thus improving work efficiency.

[0004] Based on the aforementioned existing technology, the current anti-rotation structure for current transformer windings still has the following problems: traditional current transformer windings are usually fixed by adhesive or simple clips. After long-term operation, these methods may result in the windings not being firmly fixed due to the aging of the adhesive or the loosening of the clips. Therefore, this utility model provides an anti-rotation structure for current transformer windings. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a current transformer winding anti-rotation structure, which solves the following problems that existing current transformer winding anti-rotation structures still have: traditional current transformer windings are usually fixed by adhesive or simple clips. After long-term operation, these methods may result in the windings not being firmly fixed due to the aging of the adhesive or the loosening of the clips.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a current transformer winding anti-rotation structure, comprising a current transformer body, wherein an anti-rotation mechanism is provided on the front side of the current transformer body for fixing the winding, the anti-rotation mechanism comprising:

[0007] The adjustment unit is located on the front side of the transformer body and includes a fixed box fixedly installed on the front side of the transformer body. The rear side of the fixed box is provided with four sets of cross slide grooves, and a cross slider is slidably installed inside the cross slide grooves. A clamping plate is fixedly installed at one end of the cross slider. The clamping plate clamps and fixes the winding by sliding the cross slider.

[0008] The drive unit is located inside the adjustment unit and is used to drive the cross slider to slide inside the cross groove.

[0009] Preferably, a reinforcing rib is fixedly installed between the clamping plate and the cross slider, and an inclined block is provided on the inner side of the reinforcing rib.

[0010] Preferably, a turntable is rotatably installed inside the fixed box, and four sets of arc grooves are opened inside the turntable. A sliding column is fixedly installed at the other end of the cross slider, and the sliding column slides inside the arc groove to realize the synchronous movement of the four sets of cross sliders.

[0011] Preferably, the drive unit includes five connecting posts fixedly installed on the front side of the turntable, and a semi-circular rack is fixedly installed at one end of each connecting post.

[0012] Preferably, a rotating shaft is rotatably mounted inside the fixed box, a worm gear is fixedly mounted on the surface of the rotating shaft, and a gear is fixedly mounted on one end of the rotating shaft, and the gear meshes with a semi-circular rack.

[0013] Preferably, a worm gear is rotatably mounted inside the fixed box, and the worm gear is meshed with a worm wheel.

[0014] This invention provides a transformer winding anti-rotation structure. Compared with the prior art, it has the following advantages:

[0015] Beneficial effects:

[0016] 1. This current transformer winding anti-rotation structure achieves stable self-locking and anti-loosening of the winding through a worm gear drive and rack and pinion mechanism. Rotating the worm drives the worm wheel, which in turn drives the rack and pinion mechanism, causing the turntable to rotate. The irreversible nature of the worm gear ensures that the clamping force is maintained over a long period, avoiding winding displacement caused by aging adhesive or loosening of clips, as is common with traditional methods. This significantly improves the reliability of the current transformer during long-term operation, making it particularly suitable for industrial environments with frequent vibrations.

[0017] 2. The transformer winding anti-rotation structure employs four sets of synchronous radial clamping mechanisms to achieve uniform force distribution and rapid adjustment of the winding. The arc groove of the turntable cooperates with the sliding column at the end of the cross slider to drive the four sets of clamping plates to move synchronously towards the center. Combined with the reinforcement design of reinforcing ribs and wedges, the clamping plates can closely fit the winding surface, avoiding local stress concentration, simplifying the tightness adjustment process, and ensuring the comprehensiveness and stability of the winding fixation. Attached Figure Description

[0018] Figure 1 This is a right-side perspective view of the structure of this utility model;

[0019] Figure 2 This is a right sectional perspective view of the present invention.

[0020] Figure 3 This is a right-side sectional view of the three-dimensional structure of this utility model;

[0021] Figure 4 This is a partial three-dimensional cross-sectional view of the present invention.

[0022] In the diagram: 1-Inductor body, 2-Anti-rotation mechanism, 21-Adjustment unit, 211-Fixing box, 212-Turntable, 213-Wedge block, 214-Cross slide groove, 215-Cross slider, 216-Arc groove, 217-Sliding column, 218-Clamping plate, 219-Reinforcing rib, 22-Drive unit, 221-Connecting column, 222-Semi-circular rack, 223-Rotating shaft, 224-Worm gear, 225-Gear, 226-Worm. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution:

[0025] A current transformer winding anti-rotation structure includes a current transformer body 1, and an anti-rotation mechanism 2 is provided on the front side of the current transformer body 1 for fixing the winding. The anti-rotation mechanism 2 includes:

[0026] The adjustment unit 21 is located on the front side of the transformer body 1 and includes a fixed box 211 fixedly installed on the front side of the transformer body 1. The rear side of the fixed box 211 is provided with four sets of cross slide grooves 214, and a cross slider 215 is slidably installed inside the cross slide grooves 214. A clamping plate 218 is fixedly installed at one end of the cross slider 215. The clamping plate 218 clamps and fixes the winding by sliding the cross slider 215.

[0027] The drive unit 22 is located inside the adjustment unit 21 and is used to drive the cross slider 215 to slide inside the cross groove 214.

[0028] In this embodiment, a reinforcing rib 219 is fixedly installed between the clamping plate 218 and the cross slider 215, and an inclined block 213 is provided on the inner side of the reinforcing rib 219.

[0029] The reinforcing rib 219 significantly improves the bending strength of the clamping plate 218, preventing fixation failure due to deformation under stress during clamping.

[0030] The inclined block 213 provides an inclined support surface for the clamping plate, so that the clamping force is transmitted more evenly to the winding surface, avoiding local wear or stress concentration.

[0031] In this embodiment, a turntable 212 is rotatably installed inside the fixed box 211, and four sets of arc grooves 216 are opened inside the turntable 212. A sliding column 217 is fixedly installed at the other end of the cross slider 215, and the sliding column 217 slides inside the arc groove 216 to realize the synchronous movement of the four sets of cross sliders 215.

[0032] When the turntable 212 rotates, the arc groove 216 pushes the four sets of sliding columns 217 to move synchronously towards the center, ensuring that the clamping plate 218 forms a uniform annular pressure on the winding, and realizing the synchronous movement of the four sets of cross sliders 215.

[0033] In this embodiment, the drive unit 22 includes five connecting posts 221 fixedly installed on the front side of the turntable 212, and a semi-circular rack 222 is fixedly installed on one end of the connecting post 221.

[0034] The semi-circular rack 222 converts the rotational motion of the gear 225 into the precise angular rotation of the turntable 212.

[0035] In this embodiment, a rotating shaft 223 is rotatably mounted inside the fixed box 211, and a worm gear 224 is fixedly mounted on the surface of the rotating shaft 223. A gear 225 is fixedly mounted on one end of the rotating shaft 223, and the gear 225 meshes with a semi-circular rack 222. A worm 226 is rotatably mounted inside the fixed box 211, and the worm 226 meshes with the worm gear 224.

[0036] Through the coordinated design of worm gear transmission and rack and pinion, stable self-locking and anti-loosening of the winding is achieved. Rotating the worm 226 drives the worm wheel 224, which in turn drives the gear 225. The gear 225 meshes with the semi-circular rack 222, pushing the turntable 212 to rotate. The irreversible nature of the worm gear ensures that the clamping force is maintained over a long period, avoiding winding displacement caused by aging of traditional adhesives or loosening of clips. This significantly improves the reliability of the instrument transformer during long-term operation, making it particularly suitable for industrial environments with frequent vibrations.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] During operation, if the winding inside the transformer body 1 is not securely fastened, the operator rotates the worm gear 226. The worm gear 226 drives the worm wheel 224 to rotate. The worm wheel 224 drives the gear 225 to rotate via the shaft 223. The gear 225 drives the semi-circular rack 222 to rotate. The semi-circular rack 222 drives the turntable 212 to rotate via the connecting column 221. The turntable 212 slides through the sliding column 217 inside the arc groove 216, causing the four cross sliders 215 to move synchronously towards the center, clamping the winding.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A current transformer winding anti-rotation structure, comprising a current transformer body (1), characterized in that: The front side of the transformer body (1) is provided with an anti-rotation mechanism (2) for fixing the winding. The anti-rotation mechanism (2) includes: The adjustment unit (21) is located on the front side of the transformer body (1) and includes a fixed box (211) fixedly installed on the front side of the transformer body (1). The fixed box (211) has four sets of cross slide grooves (214) on its rear side. A cross slider (215) is slidably installed inside the cross slide groove (214). A clamping plate (218) is fixedly installed at one end of the cross slider (215). The clamping plate (218) clamps and fixes the winding by sliding the cross slider (215). The drive unit (22) is located inside the adjustment unit (21) and is used to drive the cross slider (215) to slide inside the cross groove (214).

2. The transformer winding anti-rotation structure according to claim 1, characterized in that: A reinforcing rib (219) is fixedly installed between the clamping plate (218) and the cross slider (215), and an inclined block (213) is provided on the inner side of the reinforcing rib (219).

3. The transformer winding anti-rotation structure according to claim 1, characterized in that: The fixed box (211) is rotatably mounted with a turntable (212), and the turntable (212) has four sets of arc grooves (216) inside. The other end of the cross slider (215) is fixedly mounted with a sliding column (217), and the sliding column (217) is located inside the arc groove (216) to slide and realize the synchronous movement of the four sets of cross sliders (215).

4. The transformer winding anti-rotation structure according to claim 3, characterized in that: The drive unit (22) includes five connecting posts (221) fixedly installed on the front side of the turntable (212), and a semi-circular rack (222) is fixedly installed on one end of each connecting post (221).

5. The transformer winding anti-rotation structure according to claim 4, characterized in that: The fixed box (211) has a rotating shaft (223) rotatably mounted inside, and a worm gear (224) is fixedly mounted on the surface of the rotating shaft (223). A gear (225) is fixedly mounted on one end of the rotating shaft (223), and the gear (225) meshes with a semi-circular rack (222).

6. The transformer winding anti-rotation structure according to claim 5, characterized in that: The worm gear (226) is rotatably mounted inside the fixed box (211), and the worm gear (226) is meshed with the worm wheel (224).

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