A forming device for transformer low-voltage lead wire and transformer low-voltage lead wire structure

Abstract

The present invention discloses a forming device for a transformer low-voltage lead, comprising a base assembly and a bending assembly. The base assembly comprises a base and a wire trough frame. The wire trough frame is arranged on the base and is used to place the transformer low-voltage lead. The bending assembly is rotatably connected to the outside of the wire trough frame, and the transformer low-voltage lead is bent and formed by rotating the bending assembly. The present invention also discloses a transformer low-voltage lead structure. The forming device for the transformer low-voltage lead of the present invention has strong versatility and can meet the use requirements of transformers of different models and capacities. The transformer low-voltage lead structure of the present invention has a simple structure and is easy to install.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and in particular relates to a transformer low-voltage lead forming device and a transformer low-voltage lead structure processed and formed by the transformer low-voltage lead forming device. Background Art

[0002] The transformer low-voltage lead is the wire that connects the various lead-out terminals of the transformer coil externally, and its function is to output the transmitted electric energy to the outside of the transformer. The transformer low-voltage lead structure is to connect the first lead-out terminals of the three-phase low-voltage coil and the external lead-out wire directly to the low-voltage bushing of the transformer and connect the last lead-out terminals of the three-phase low-voltage coil together to lead out the 0 line.

[0003] Since the low-voltage coil of the transformer has the characteristics of low voltage and high current, the cross-section of the copper wire used is large. The traditional low-voltage lead structure is to cut the first and end lead wires of the coil short and weld them directly on the copper bus or multi-strand copper stranded wire for lead-out. There are at least the following shortcomings:

[0004] (1) The first lead-out terminal and the last lead-out terminal are at the same height, the lead wire occupies a large space, and the insulation distance between the first and last lead-out terminals and the insulation distance between the lead wire and the oil tank are small;

[0005] (2) Insulating shields need to be placed separately for isolation, and the lead structure is complex, which is not only inconvenient for production and has low production efficiency, but also affects the appearance of the transformer body;

[0006] (3) The above welding position is close to the root of the coil lead-out terminal, which may easily cause damage to the coil insulation.

[0007] Moreover, since there are many types of distribution transformers with different capacities and different spatial dimensions of low-voltage coils, the positions at which the first and last lead ends need to be bent are also different, and the thickness and number of wires required to be bent are also different. The existing lead bending tooling is difficult to meet the use requirements of transformers of different types and capacities, and has problems such as low practicality and versatility. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a forming device for a transformer low-voltage lead in view of the above-mentioned deficiencies in the prior art, which has strong versatility and can meet the use requirements of transformers of different models and capacities. It also provides a transformer low-voltage lead structure with simple structure and convenient installation.

[0009] According to one aspect of the present invention, a forming device for a transformer low-voltage lead is provided, and its technical solution is as follows:

[0010] A forming device for a transformer low-voltage lead wire comprises a base component and a bending component.

[0011] The base assembly includes a base and a wire slot frame, wherein the wire slot frame is arranged on the base and is used to place the low-voltage lead wire of the transformer;

[0012] The bending assembly is rotatably connected to the outside of the wire slot frame, and the transformer low-voltage lead is bent into shape by rotating the bending assembly.

[0013] Preferably, the base assembly further comprises a connecting pad.

[0014] The connecting pad is arranged below the base, and the two are detachably connected via a connecting rod.

[0015] Preferably, the base assembly further comprises a baffle,

[0016] The wire trough frame is provided with a limiting hole, and the baffle is inserted into the limiting hole to limit the low-voltage lead of the transformer.

[0017] Preferably, the length of the wire slot frame is 30-150 mm, the width is 10-50 mm, and the depth is 20-60 mm.

[0018] Preferably, the bending assembly comprises a bending wrench,

[0019] The bending wrench comprises a wrench body and a bending head.

[0020] A connecting piece extends out of the wire trough frame, and one end of the wrench body is rotatably connected to the connecting piece so that the wrench body can rotate in a vertical plane.

[0021] The bending head is arranged horizontally, and one end of the bending head is connected to the side of the wrench body facing the wire slot frame. When the wrench body is rotated, the bending head contacts the low-voltage lead of the transformer placed in the wire slot frame, and the low-voltage lead of the transformer is bent into shape by the force of the bending head.

[0022] Preferably, the wrench body is in the shape of an elongated strip with a length of 300-800 mm, and the length of the bending head is 20-150 mm.

[0023] Preferably, a limiting member is provided at the other end of the bending head for limiting the portion of the transformer low-voltage lead that needs to be bent to prevent the transformer low-voltage lead from shifting when being bent.

[0024] Preferably, the bending assembly further comprises a bending auxiliary member,

[0025] The bending auxiliary member is vertically arranged, and one end thereof is rotatably connected to the connecting member together with the wrench body.

[0026] Preferably, a protrusion is provided on the side surface of the bending auxiliary member.

[0027] The forming device for the transformer low-voltage lead of the present invention can quickly bend and form the transformer low-voltage lead, and has strong versatility and convenient operation. The bending position of the transformer low-voltage lead can be easily adjusted to meet the use requirements of transformer low-voltage leads of different capacities or models. The size of the wire trough frame can be adjusted and a suitable bending head can be selected according to the size and number of the transformer low-voltage leads, thereby improving the accuracy of the lead bending size and ensuring the bending quality and efficiency.

[0028] According to another aspect of the present invention, a low-voltage lead structure of a transformer is also provided, and its technical solution is as follows:

[0029] A transformer low-voltage lead structure includes a low-voltage lead, wherein the lead includes a first lead-out end and a last lead-out end, wherein the first lead-out end and the last lead-out end are respectively bent using the above-mentioned transformer low-voltage lead forming device, and the bending positions of the first lead-out end and the last lead-out end are at different heights.

[0030] The transformer low-voltage lead structure of the present invention is formed by bending the lead using the forming device described above, so that the first lead-out end and the last lead-out end of the low-voltage lead are arranged at different position heights on the same plane, thereby increasing the insulation distance between the first lead-out end and the last lead-out end and the distance from the low-voltage lead to the transformer oil tank. Compared with the existing transformer low-voltage lead structure of the same type, it is not necessary to install an insulating isolation guard plate and a 0-phase lead external guard plate, and the welding points of each lead-out end and the original copper wire or copper bus or multi-strand twisted wire are located away from the root of the coil lead-out end, which can avoid damage to the insulation of the root of the coil lead-out end during welding. At the same time, the low-voltage 0-phase connecting wire does not need to be bent upwards, and the isolation guard plate between the first and last lead-out ends of the low-voltage lead is cancelled, which can not only ensure the insulation distance and avoid the lead from being entangled, but also improve the installation quality and efficiency of the low-voltage lead. The installation is simple and convenient, and materials can be saved, making the transformer low-voltage lead structure beautiful and concise. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the structure of a forming device for a transformer low-voltage lead in an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A top view of

[0033] Figure 3 It is a structural schematic diagram of a base assembly in an embodiment of the present invention;

[0034] Figure 4 for Figure 3 A top view of

[0035] Figure 5 A schematic diagram of the structure of a connecting pad in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the baffle in an embodiment of the present invention;

[0037] Figure 7 for Figure 6 Side view of

[0038] Figure 8 Schematic diagram of the structure of a bending wrench in an embodiment of the present invention;

[0039] Fig. 9 for Figure 8 Side view of

[0040] Fig.10 is a schematic structural diagram of a bending auxiliary component in an embodiment of the present invention;

[0041] Fig.11 for Fig.10 Side view of

[0042] Fig.12 Schematic diagram of the structure of the transformer low-voltage lead structure in an embodiment of the present invention.

[0043] In the figure: 1-bending wrench; 11-bending head; 12-washer; 13-threaded hole; 14-first connecting hole; 15-wrench body; 16-limiting piece; 2-base; 21-limiting hole; 22-first threaded hole; 23-wire slot frame; 24-connecting piece; 3-connecting pad; 31-second threaded hole; 4-baffle; 41-vertical section; 42-horizontal section; 5-connecting rod; 6-bending auxiliary piece; 61-protrusion; 62-second connecting hole; 7-wire piece; 8-clamping piece; 9-first lead-out terminal; 10-last lead-out terminal. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0045] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0046] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Example 1

[0049] like Figure 1-Figure 11 As shown, this embodiment discloses a forming device for transformer low-voltage lead wires, including a base assembly and a bending assembly, wherein the base assembly includes a base 2 and a wire slot frame 23, the wire slot frame 23 is arranged on the base 1, and is used to place the transformer low-voltage lead wires; the bending assembly is rotatably connected to the outside of the wire slot frame 23, and the transformer low-voltage lead wires are bent and formed by rotating the bending assembly. The transformer low-voltage lead wires can be made of relatively wide copper flat wires.

[0050] Specifically, if Figure 3 , Figure 4 As shown, the cross section of the wire slot frame 23 is preferably U-shaped, and one end of the wire slot frame 23 is connected and communicated with the upper surface of the base 2, so that when the low-voltage lead of the transformer needs to be bent, the low-voltage lead of the transformer is extended from the bottom of the base 2 into the wire slot frame 23 and passes through the wire slot frame 23, so that the low-voltage lead of the transformer is bound in the wire slot frame, and the bending assembly is used to bend the part of the low-voltage lead of the transformer that extends after passing through the wire slot frame 23. In this embodiment, the wire slot frame 23 is U-shaped. The wire slot frame 23 is preferably located at the edge of the base 2, with its open side facing the edge of the base 2, and a connector 24 extends outward from the outer surface of the wire slot frame 23 for installing the bending assembly.

[0051] The length of the wire slot frame 23 is preferably 30-150 mm, the width is 10-50 mm, and the depth is 20-60 mm.

[0052] In some embodiments, the base assembly further includes a connecting pad 3 , which is disposed below the base 2 , and the two are detachably connected via a connecting rod 5 .

[0053] Specifically, the connecting rod 5 can be a double-headed screw, and the base 2 is provided with a first threaded hole 22. The number of the first threaded hole 22 is one, or multiple, preferably two first threaded holes 22 are symmetrically distributed. Figure 5 As shown, the connecting pad 3 is provided with a second threaded hole 31, which corresponds to the first threaded hole 22 one by one, and the two ends of the double-headed screw are respectively connected to the first threaded hole 22 of the base 2 and the second threaded hole 31 of the connecting pad 3, and are fixed by nuts. The number of double-headed screws can be set to multiple, and the lengths of each double-headed screw are different, so that the distance between the base 2 and the connecting pad 3 can be adjusted by replacing double-headed screws of different lengths, and then the bending position or height of the lead-out end of the transformer low-voltage lead can be adjusted to ensure that the transformer low-voltage lead after bending can meet the low-voltage lead arrangement requirements of different transformers and have a beautiful appearance.

[0054] In some embodiments, the base assembly also includes a baffle 4, and a limiting hole 21 is provided on the wire trough frame 23. The baffle 4 is inserted into the limiting hole 21 to limit the low-voltage lead of the transformer placed in the wire trough frame to prevent the low-voltage lead of the transformer from moving in the wire trough frame 23.

[0055] Specifically, the number of the limiting holes 21 is preferably multiple pairs, and each pair of limiting holes 21 is respectively arranged on the two side walls of the U-shaped wire trough frame 23, and each pair of limiting holes is arranged in sequence along the height direction of the wire trough frame 23. When bending the low-voltage lead of the transformer, the baffle 4 can be installed in the limiting hole 21 at an appropriate position according to the size and number of the low-voltage lead of the transformer, so that the low-voltage lead of the transformer fits as closely as possible with the wire trough frame 23 to ensure that the low-voltage lead of the transformer does not move during bending, thereby improving the bending efficiency and quality.

[0056] In this embodiment, the limiting hole 21 is preferably a rectangular hole, and the baffle 4 is preferably made of a T-shaped steel plate, which includes a vertical section 41 and a horizontal section 42 (such as Figure 6 , Figure 7 As shown in the figure, the vertical section 41 is arranged at one end of the horizontal section 42, and the horizontal section 42 is used to be inserted into the limiting hole 21. The T-shaped steel plate can be quickly installed into the limiting hole 21 for locking and separation from the limiting hole 21. The thickness of the baffle 4 is preferably 3-6mm, and its length is adapted to the distance between the two side walls of the wire trough frame 23, for example, it can be 20-60mm.

[0057] It should be noted that the spacing between the pairs of limit holes 21 affects the adjustment accuracy of the space size of the wire trough frame for placing the low-voltage leads of the transformer, and can be selected and set according to actual needs.

[0058] In some embodiments, the bending assembly includes a bending wrench 1, and the bending wrench 1 includes a wrench body 15 and a bending head 11. The wrench body 15 is in the shape of an elongated strip, one end of the wrench body 15 is rotatably connected to the connecting piece 24, and the wrench body 15 is in a vertical plane so that the wrench body 15 can rotate in the vertical plane. One end of the bending head 11 is connected to the side of the wrench body 15 facing the wire slot frame 23, and the bending head 11 is preferably arranged horizontally. When the wrench body 15 is rotated, the bending head 11 contacts the low-voltage lead of the transformer placed in the wire slot frame 23, and the part of the low-voltage lead of the transformer extending out of the wire slot frame 23 is bent into shape by the force of the bending head 11. The bending head 11 is a cylindrical component.

[0059] Specifically, if Figure 8 , Fig. 9 As shown, one end of the wrench body 15 for connecting the connecting member 24 is provided with a first connecting hole 14, and the wrench body 15 is rotatably connected to the connecting member 24 through the first connecting hole 14. In this embodiment, the connecting member 24 is preferably a screw, one end of which is fixedly arranged on the bottom of the horizontally placed U-shaped wire groove frame 23, and a thread matching the screw is arranged in the first connecting hole 14, and the wrench body 15 is rotatably connected to the screw through the thread.

[0060] An external thread is provided on one end of the bending head 11 for connecting the wrench body 15, and a threaded hole 13 matching the external thread is provided on the wrench body 15. The bending head 11 is detachably installed in the threaded hole 13 of the wrench body 15 through the external thread. A stopper 16 is provided at the other end of the bending head 11, which is used to limit the part of the transformer low-voltage lead that needs to be bent to prevent the part of the transformer low-voltage lead that needs to be bent from shifting during bending, thereby ensuring the bending effect. In this embodiment, the bending head 11 preferably adopts a double-headed screw, one end of which is installed in the threaded hole 13 of the wrench body 15, and a washer 12 can be provided on the end, for example, a hexagonal nut can be welded on the end as the washer 12 to improve the connection stability. The other end of the double-headed screw can be used as a stopper 16 by installing a nut or a nut. The middle section of the double-headed screw is preferably set as a smooth round rod without threads to prevent damage to the transformer low-voltage lead when the transformer low-voltage lead is bent.

[0061] In some embodiments, the wrench body 15 is preferably in the shape of a long strip, and its length is preferably 300-800 mm, for example, it can be 400 mm, 500 mm, 600 mm, 700 mm, 800 mm, etc. The length of the bending head 11 is preferably 20-150 mm, and can be set to 30 mm, 50 mm, 70 mm, 90 mm, 110 mm, 130 mm, etc., and bending heads of different specifications are selected according to factors such as the size and quantity of the transformer low-voltage lead, so that the transformer low-voltage lead can be further prevented from shifting during bending, thereby ensuring the bending effect.

[0062] In some embodiments, the bending assembly further includes a bending auxiliary member 6, which is preferably vertically arranged, one end of which is rotatably connected to the connecting member 24 together with the wrench body 15, and the bending auxiliary member 6 is located at the end away from the bottom of the wire trough frame 23.

[0063] Specifically, if Fig.10 , Fig.11 As shown, the bending auxiliary member 6 is provided with a second connection hole 62 at one end for connecting the connecting member 24, and the bending auxiliary member 6 is rotatably connected to the connecting member 24 through the second connection hole 62. In the process of bending and forming the low-voltage lead of the transformer, the bending head 11 of the bending wrench 1 contacts the part of the low-voltage lead of the transformer that needs to be bent, and the bending wrench 1 is rotated in the direction in which the low-voltage lead of the transformer needs to be bent, and the bending auxiliary member 6 is rotated in the opposite direction of the rotation direction of the bending wrench 1, so that the low-voltage lead of the transformer can be quickly bent and formed, which is simple to operate and more labor-saving. The length of the bending auxiliary member 6 is preferably the same as the length of the wrench body 15, and its length is preferably 300-800mm.

[0064] In addition, a protrusion 61 may be provided on the side of the bending auxiliary member 6. When the low-voltage lead of the transformer is bent, the protrusion 61 abuts against the transformer coil, thereby playing a supporting and positioning role.

[0065] In this embodiment, the bending auxiliary member 6 is also in the shape of a long strip, and its shape is the same or similar to that of the wrench body 15. Specifically, the bending auxiliary member 6 is preferably set in a plate shape, and the protrusion 61 is set on both sides of the plate-shaped bending auxiliary member, and the protrusion 61 is preferably at one end of the bending auxiliary member 6 close to the second connecting hole 62. The shape of the protrusion 61 can be various shapes such as a rectangle and a square, preferably a rectangle, that is, a rectangular block, and the length of the rectangular block (that is, the height of the protrusion) is preferably 10-150mm, and the width is preferably 30-50mm. When the connecting member 24 is a screw rod, a thread matching the screw rod is provided in the first connecting hole 14, and the bending auxiliary member 6 is rotatably connected to the screw rod through the thread so as to rotate when the transformer low-voltage lead is bent. A nut is provided at the free end of the screw rod (connecting member 24) (that is, the end away from the wire slot frame) to prevent the wrench body 15 and the bending auxiliary member 6 from detaching from the screw rod.

[0066] The forming device for the transformer low-voltage lead of the present embodiment can quickly bend and form the transformer low-voltage lead, and has strong versatility and convenient operation. The bending position of the transformer low-voltage lead can be easily adjusted to meet the use requirements of transformer low-voltage leads of different capacities or models. The size of the wire trough frame can be adjusted and a suitable bending head can be selected according to the size and quantity of the transformer low-voltage lead, thereby improving the accuracy of the bending size of the low-voltage lead and ensuring the bending quality and efficiency.

[0067] Example 2

[0068] The present embodiment discloses a transformer low-voltage lead structure, including a low-voltage lead, the low-voltage lead including a first lead-out terminal 9 and a last lead-out terminal 10, the first lead-out terminal 9 and the last lead-out terminal 10 are respectively bent by using the transformer low-voltage lead forming device described in Example 1, and the bending positions of the first lead-out terminal and the last lead-out terminal are at different heights, so that the first lead-out terminal and the last lead-out terminal are respectively arranged at two positions on the same plane but at different heights, such as Fig.12 shown.

[0069] Specifically, the first lead-out terminal 9 includes a first lead-out terminal, b first lead-out terminal, and c first lead-out terminal respectively led out from the three phases x, y, and z of the low-voltage coil, and the bending positions of the first lead-out terminal a, the first lead-out terminal b, and the first lead-out terminal c are at a first bending height. The bent first lead-out terminal a, the first lead-out terminal b, and the first lead-out terminal c are respectively connected to the wiring piece 7 of each phase through the original copper wire or copper bus or multi-strand twisted wire, and then connected to the low-voltage bushing of the corresponding phase through the wiring piece 7 of each phase; the last lead-out terminal 10 is led out from the three phases x, y, and z of the low-voltage coil, and the bending positions of the last lead-out terminal 10 led out from the three phases x, y, and z are all at a second bending height (different from the first bending height), and the three are connected together through the original copper wire or copper bus or multi-strand twisted wire and then connected to the low-voltage bushing of phase 0 through the wiring piece 7. In addition, each original copper wire or copper bar or multiple strands of twisted wire used to connect the terminal block 7 of the corresponding phase is provided with a clamping member 8 for fixing each original copper wire or copper bar or multiple strands of twisted wire.

[0070] In this embodiment, the transformer can be a three-dimensional wound core transformer or a stacked core transformer. Of course, it can also be other types of transformers. The low-voltage coil of the transformer can be various types of coils such as multi-layer or double-layer / cylindrical coils wound with single or multiple copper wires.

[0071] The transformer low-voltage lead structure of the present embodiment is formed by bending the lead using the forming device described in Example 1, so that the first lead-out end and the last lead-out end are arranged on the same plane at different position heights, thereby increasing the insulation distance between the first lead-out end and the last lead-out end and the distance from the low-voltage lead to the transformer oil tank. Compared with the existing transformer low-voltage lead structure of the same type, there is no need to install an insulating isolation guard plate and a 0-phase lead external guard plate, and the welding points of each lead-out end and the original copper wire or copper bus or multi-strand twisted wire are located away from the root of the coil lead-out end, which can avoid damage to the insulation of the root of the coil lead-out end during welding. At the same time, the low-voltage 0-phase connecting wire does not need to be bent upwards, and the isolation guard plate between the first and last lead-out ends of the low-voltage lead is cancelled, which can not only ensure the insulation distance and avoid the lead from being entangled, but also improve the installation quality and efficiency of the lead. The installation is simple and convenient, and materials can be saved, making the transformer low-voltage lead structure beautiful and simple.

[0072] It is to be understood that the above is only a preferred embodiment of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered as the protection scope of the present invention.

Claims

1. A forming device for a transformer low-voltage lead, characterized in that: Including base components, bending components, The base assembly comprises a base (2) and a wire trough frame (23), wherein the wire trough frame is arranged on the base and is used for placing low-voltage leads of the transformer; The bending assembly is rotatably connected to the outside of the wire slot frame, and the transformer low-voltage lead is bent into shape by rotating the bending assembly. Specifically, the bending assembly comprises a bending wrench (1), wherein the bending wrench comprises a wrench body (15), a bending head (11), A connecting piece (24) extends from the outside of the wire trough frame, and one end of the wrench body is rotatably connected to the connecting piece so that the wrench body can rotate in a vertical plane. The bending head is arranged horizontally, and one end of the bending head is connected to the side of the wrench body facing the wire slot frame. When the wrench body is rotated, the bending head contacts the low-voltage lead of the transformer placed in the wire slot frame, and the low-voltage lead of the transformer is bent into shape by the force of the bending head. The base assembly further comprises a baffle (4), the wire trough frame is provided with a limiting hole (21), and the baffle is inserted into the limiting hole to limit the position of the transformer low-voltage lead.

2. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: The base assembly further comprises a connecting pad (3), The connecting pad is arranged below the base, and the two are detachably connected via a connecting rod.

3. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: The length of the wire slot frame is 30-150 mm, the width is 10-50 mm, and the depth is 20-60 mm.

4. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: The wrench body is in the shape of an elongated strip, and its length is 300-800mm, and the length of the bending head is 20-150mm.

5. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: The other end of the bending head is provided with a limiting piece (16) for limiting the portion of the transformer low-voltage lead wire that needs to be bent, so as to prevent the transformer low-voltage lead wire from shifting when being bent.

6. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: The bending assembly further comprises a bending auxiliary component (6), The bending auxiliary member is vertically arranged, and one end thereof is rotatably connected to the connecting member together with the wrench body.

7. The forming device for transformer low voltage lead wire according to claim 1, characterized in that: A protrusion (61) is provided on the side surface of the bending auxiliary piece.

8. A transformer low-voltage lead structure, comprising a lead, wherein the lead comprises a first lead-out end and a last lead-out end, characterized in that: The first lead-out end and the last lead-out end are respectively bent by using a forming device for a transformer low-voltage lead according to any one of claims 1 to 7, and the bending positions of the first lead-out end and the last lead-out end are at different heights.

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