A three-dimensional wound core transformer winding gear

Abstract

The utility model discloses a kind of three-dimensional volume iron core transformer winding gears, including insulating cylinder, the gear disc of sleeve joint in the both ends of insulating cylinder and the fixed ring of connecting gear disc. Gear disc is composed of multiple gear units abutting at head and tail, its inner circle is equipped with the gap for lead wire to pass through;Gear disc and insulating cylinder are abutted by boss step, cooperate with clamping groove, notch and clamping iron to limit relative position, and fixed ring connects and fixes gear unit. The winding gear is bent by gap for lead wire to advance tool, solve the problem of difficult lead wire to pull, insulation damage, low bending precision in prior art, while stable structure, disassembly and assembly are convenient, significantly improve production efficiency, reduce labor and material cost.

Description

Technical Field

[0001] This utility model relates to a three-dimensional wound core transformer, specifically to a three-dimensional wound core transformer winding gear. Background Technology

[0002] As a new generation of high-efficiency and energy-saving power distribution equipment, the three-phase wound core transformer has become the mainstream choice for power distribution networks, new energy power plants, and industrial enterprise power distribution systems due to its advantages such as symmetrical three-phase magnetic circuits, low no-load loss, and compact structure. Its core structure consists of three-phase iron core columns arranged orthogonally in space, which places higher demands on the precision of the winding process and the spatial adaptability of the coil arrangement.

[0003] Unlike the winding method of planar iron cores, the coils of three-dimensional wound iron core transformers are wound directly on the iron core by winding gears. However, the existing winding gear structure leads to the common "embedded" arrangement of wire-wound low-voltage coils. While this design simplifies the initial winding process, it reveals serious flaws in the subsequent assembly process: 1. Difficulty in pulling the lead wires and high risk of insulation damage: During assembly, each lead wire must be pulled manually to create a 90° bend. During the pulling process, the pulled lead wires are squeezed against the underlying conductors, which can easily lead to damage to the insulation layer.

[0004] Low bending accuracy and large conductor deformation: The bending angle of manually pulled leads is inconsistent and the axial position is unstable. At the same time, the deformation at the bend of the lead makes it easy for the sharp corners to puncture the insulating paper, causing inter-turn short circuits.

[0005] Low production efficiency and significantly increased costs: Before transformer installation, an additional 40-50 minutes are required to pull and bend the leads, and the rework rate due to poor bending is relatively high (rewinding or repair is required), which directly reduces production efficiency and significantly increases labor costs and material waste. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a three-dimensional wound core transformer winding gear to solve problems such as difficulty in pulling lead wires, insulation damage, low bending accuracy, and low production efficiency caused by existing winding gears.

[0007] To solve the above technical problems, this utility model provides the following solution: A three-dimensional wound core transformer winding gear of this utility model, comprising: Insulating cylinder; A gear disk fitted onto both ends of the insulating cylinder, the gear disk having teeth on its outer circumference, comprising multiple gear units, the multiple gear units abutting end to end to form a circular gear disk, the inner ring of the gear disk having a notch for lead wires to pass through; There are two retaining rings, which are connected one-to-one to the outer sides of the two gear disks, connecting and fixing multiple gear units.

[0008] Furthermore, the gear disk has a boss at its connection end with the insulating cylinder, and the inner ring of the boss forms a step, with the end of the insulating cylinder abutting against the step.

[0009] Furthermore, the gear unit is provided in two parts, and the two gear units are semi-circular gear disks with the same structure.

[0010] Furthermore, one end of the semi-circular gear disk is flat, and the inner corner of the other end is set at a right angle. After the two gear units come into contact, the two right angles form the notch.

[0011] Furthermore, the semi-circular gear disk has multiple fixing ring mounting holes arranged in the equiangular direction on its disk surface.

[0012] Furthermore, the inner arc of the semi-circular gear disk is provided with a slot that extends through both sides.

[0013] Furthermore, after the gear disk is fixed to the insulating cylinder, a retaining hole is formed between the retaining groove and the insulating cylinder.

[0014] Furthermore, the insulating cylinder has a slot at a position corresponding to the slot, and a locking iron is inserted into the slot and the locking hole to define the insulating cylinder and the gear disk.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model solves the problem of lead wire pulling and reduces the risk of insulation damage: by setting a notch in the inner ring of the gear disk for the lead wire to pass through, the lead wire can be bent at 90° in advance using a bending tool before winding, eliminating the need for manual pulling during assembly, avoiding the squeezing of the lead wire and the lower conductor, effectively protecting the insulation layer and improving the insulation reliability of the transformer.

[0016] This invention improves bending accuracy and reduces conductor deformation: by using a tool to pre-bend the lead wire, the consistency of the bending angle can be ensured, and the axial position of the lead wire is stable after it extends from the notch. Deformation is not easily generated at the bend, avoiding the problem of sharp corners breaking the insulation paper and reducing the incidence of inter-turn short circuit faults.

[0017] This invention improves production efficiency and reduces production costs: it eliminates the time spent on manual pulling and bending of the lead wire, and the bending accuracy is high, significantly reducing the rework rate and improving production efficiency, while also reducing labor costs and material waste.

[0018] This utility model has a stable and reliable structure and is easy to assemble and disassemble: the gear disk adopts a semi-circular gear unit combination structure, which, together with the fixing ring and the locking iron, not only ensures the structural stability during the winding process, but also facilitates the assembly and disassembly of the winding gear, thus meeting the assembly requirements of three-dimensional wound core transformers. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the winding gear of the three-dimensional wound iron core transformer of this utility model.

[0020] Figure 2 This is a structural diagram of the gear disk of this utility model.

[0021] Figure 3 This is a structural diagram of the fixing ring of this utility model.

[0022] The following are labels in the attached diagram: Insulating cylinder 1, fixing ring 2, gear disk 3, notch 4, locking iron 5, semi-circular ring 21, connecting hole 22, gear unit 31, slot 32, fixing ring mounting hole 33, right angle 34. 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, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Example 1: The specific structure of this utility model is as follows: Please refer to the appendix. Figure 1-3 The present invention relates to a three-dimensional wound core transformer winding gear, comprising an insulating cylinder 1, a gear disk 3, and a fixing ring 2.

[0026] The insulating cylinder 1 is a cylindrical structure made of high-strength insulating material. Its outer diameter is matched with the inner diameter of the gear disk 3, and it is used to fit onto the core column of the three-dimensional wound iron core. At both ends of the insulating cylinder 1, slots are provided corresponding to the slots 32 of the gear disk 3, and the shape of the slots matches the locking iron 5.

[0027] The gear disk 3 is fitted onto both ends of the insulating cylinder 1. Each gear disk 3 consists of two identical semi-circular gear disks (i.e., gear units 31) joined end-to-end. The semi-circular gear disks have teeth evenly distributed along their outer circumference. The module and number of teeth are determined according to the drive mechanism parameters of the winding machine. One end of the semi-circular gear disk is flat, and the inner corner of the other end is machined into a right angle 34. When the two semi-circular gear disks abut, the two right angles 34 form a rectangular notch 4. The width of the notch 4 is slightly larger than the diameter of the lead wire, ensuring that the lead wire can pass through smoothly. Four fixing ring mounting holes 33 are provided on the surface of the semi-circular gear disk in an equiangular direction. A through-hole 32 is provided on the inner arc of the semi-circular gear disk, with a rectangular cross-section. When the gear disk 3 is fitted onto the insulating cylinder 1, the slot 32 and the outer surface of the insulating cylinder 1 form a locking hole.

[0028] Two fixing rings 2 are provided, each fixing ring 2 consisting of two semicircular rings 21. The annular surface of the semicircular rings 21 has a connecting hole 22 corresponding to the fixing ring mounting hole 33. During installation, the two semicircular gear disks are first sleeved on the ends of the insulating cylinder 1, so that the ends of the insulating cylinder 1 abut against the steps of the boss of the gear disk 3. Then, the locking iron 5 is inserted into the locking hole formed by the locking groove 32 and the groove of the insulating cylinder 1 to limit the relative rotation of the gear disk 3 and the insulating cylinder 1. Next, the two semicircular rings 21 are combined to form a fixing ring 2, which covers the outer side of the gear disk 3, so that the connecting hole 22 is aligned with the fixing ring mounting hole 33. Finally, the semicircular rings 21 and the gear disk 3 are locked and fixed by bolts and nuts, and it is ensured that the joint of the two semicircular rings 21 is perpendicular to the joint of the two semicircular gear disks.

[0029] Winding operation process: When winding, first place the assembled winding gear on the winding machine and install the insulating cylinder 1; use a bending tool to bend all the lead wires at 90° in one go to ensure the consistency of the bending angle and no deformation at the bend; then extend the lead wires one by one from the notch 4 of the gear disk 3 to ensure the axial position of the lead wires is stable, and then attach the lead wires to the gear disk 3; then continue winding the coil, and when the last lead wire of the coil is reached, it is also led out from the notch 4 in the same way as above; the winding of the other two phase coils is also carried out in the same way.

[0030] In summary, this utility model solves the problem of lead wire pulling and reduces the risk of insulation damage: by setting a notch in the inner ring of the gear disk for the lead wire to pass through, the lead wire can be bent 90° in one go before winding, eliminating the need for manual pulling during assembly, avoiding the squeezing of the lead wire with the lower conductor, effectively protecting the insulation layer and improving the insulation reliability of the transformer.

[0031] This invention improves bending accuracy and reduces conductor deformation: by using a tool to pre-bend the lead wire, the consistency of the bending angle can be ensured, and the axial position of the lead wire is stable after it extends from the notch. Deformation is not easily generated at the bend, avoiding the problem of sharp corners breaking the insulation paper and reducing the incidence of inter-turn short circuit faults.

[0032] This invention improves production efficiency and reduces production costs: it eliminates the time spent on manual pulling and bending of the lead wire, and the bending accuracy is high, significantly reducing the rework rate and improving production efficiency, while also reducing labor costs and material waste.

[0033] This utility model has a stable and reliable structure and is easy to assemble and disassemble: the gear disk adopts a semi-circular gear unit combination structure, which, together with the fixing ring and the locking iron, not only ensures the structural stability during the winding process, but also facilitates the assembly and disassembly of the winding gear, thus meeting the assembly requirements of three-dimensional wound core transformers.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A three-dimensional wound core transformer winding gear, characterized in that, include: Insulating cylinder (1); Gear disks (3) are fitted onto both ends of the insulating cylinder (1). The gear disks (3) have teeth on their outer circumference and include multiple gear units (31). The multiple gear units (31) are joined end to end to form a circular gear disk. The inner ring of the gear disks (3) has a notch (4) for the lead wire to pass through. There are two fixed rings (2), which are connected one-to-one to the outer side of the two gear disks (3) to connect and fix multiple gear units.

2. The three-dimensional wound core transformer winding gear according to claim 1, characterized in that, The gear disk (3) has a boss at its connection end with the insulating cylinder (1), and the inner ring of the boss forms a step, with the end of the insulating cylinder (1) abutting against the step.

3. The three-dimensional wound core transformer winding gear according to claim 1, characterized in that, The gear unit consists of two units, both of which are identical semi-circular gear disks.

4. A three-dimensional wound core transformer winding gear according to claim 3, characterized in that, One end of the semi-circular gear disk is flat, and the inner corner of the other end is set as a right angle. After the two gear units abut, the two right angles form the notch (4).

5. A three-dimensional wound core transformer winding gear according to claim 3, characterized in that, The semi-circular gear disk has multiple fixing ring mounting holes (33) arranged in the equiangular direction on the disk surface.

6. A three-dimensional wound core transformer winding gear according to claim 3, characterized in that, The inner arc of the semi-circular gear disk is provided with a through-hole (32).

7. A three-dimensional wound core transformer winding gear according to claim 6, characterized in that, After the gear disk (3) is fixed to the insulating cylinder (1), a locking hole is formed between the locking groove (32) and the insulating cylinder (1).

8. A three-dimensional wound core transformer winding gear according to claim 7, characterized in that, The insulating cylinder (1) has a slot at a position corresponding to the slot (32), and a locking iron is inserted into the slot to limit the insulating cylinder (1) and the gear disk (3).

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