Stereoscopic wound core transformer gear die limiting device

Abstract

The invention discloses a three-dimensional wound core transformer gear mold limiting device which comprises an axial limiting unit, an axial limiting fixing plate, a steering connecting plate vertically connected with the axial limiting fixing plate, a jacking assembly connected with the steering connecting plate and a pin bolt used for connecting the axial limiting fixing plate, the steering connecting plate and an iron core clamping jaw. A circumferential rotation limiting unit, comprising a circumferential limiting body, a locking movable block which is in movable fit with a guide groove of the circumferential limiting body, an adjusting screw rod which is matched with the locking movable block, a mounting clamping plate which is matched with the adjusting screw rod, a transition rod which is connected with the circumferential limiting body, a pin which is used for connecting the circumferential limiting body and the transition rod, and a fixed plate which is connected with the transition rod, and the auxiliary fixing plate is connected with the fixing plate and the gear mold fixing ring. The connecting device has the beneficial effects that the design of multiple rows of connecting holes is adopted, the accurate positioning and fastening functions of pins and bolts are matched, the connecting device can adapt to iron cores with different diameters and intervals, and the applicability and the connecting precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer technology, in particular to a gear mould limiting device for a three-dimensional wound core transformer. Background Art

[0002] The three-dimensional wound core is composed of three core frames of exactly the same shape. The axes of the three single frames of the three-dimensional wound core are at an angle of 120° to each other. The supporting surface is a plane at an angle of 30° to the horizontal plane and an arc surface. Each single frame core is usually formed by continuous winding of several long silicon steel sheets after bending and shearing. The magnetic circuit is evenly distributed throughout, avoiding the high magnetic resistance area formed by the joints of other core structures. There is no distortion of magnetic flux density at the joints. The three-dimensional wound core transformer has the advantages of small size, light weight, small no-load current and low noise.

[0003] The three-dimensional wound core transformer coil winding requires the epoxy tube (paper tube) to be suspended on the core column through the gear mold. The gear mold includes left and right rotating gears, track rings, fixed rings and other parts ( Figure 1 ). The left and right rotating gears, track rings, and fixed rings are all half-circular structures. After being mounted on the core column, they are connected into a ring structure. The track ring is assembled into one with the fixed ring through connecting bolts. The outer positioning step of the rotating gear matches the outer circumference of the track ring. The epoxy tube (paper tube) is installed on the inner positioning step of the left and right rotating gears. The fixed ring is fixed to the core column by tightening bolts to provide rotation support and axial positioning of the entire coil. The rotating gear rotates around the track ring, and the epoxy tube (paper tube) rotates with the rotating gear of the gear mold, driving the electromagnetic wire (wire or foil) to rotate, thereby realizing the winding of the coil. As the three-dimensional wound core transformer develops towards high voltage and large capacity, the core window height becomes higher, the core column diameter becomes larger, the specifications of copper foil and electromagnetic wire become larger, and the coil winding tension demand increases. New working conditions. During the coil winding process, the epoxy tube (paper tube) deforms and touches the iron core column, and the tightening force of the fixing ring fastening bolts is insufficient, resulting in failure of the axial and circumferential limit of the gear mold, loosening of the inner positioning steps of the left and right rotating gear and the epoxy tube (paper tube), and the coil winding cannot continue. The fixing ring rotates and hits the iron core and other quality defects occur. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a three-dimensional wound core transformer gear mold limiting device, which can solve the problems of the prior art in which the axial and circumferential limiting of the gear mold fixing ring fails during the winding process of large-capacity, high-voltage transformer coils, the coil cannot be wound further, and the fixing ring hits the core.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a three-dimensional wound core transformer gear mold limiting device, which includes an axial limiting unit, including an axial limiting fixing plate, a steering connecting plate vertically connected to the axial limiting fixing plate, a tightening assembly connected to the steering connecting plate, and a pin bolt for connecting the axial limiting fixing plate and the steering connecting plate;

[0008] The circumferential rotation limiting unit comprises a circumferential limiting body, a locking block movably matched with the guide groove of the circumferential limiting body, an adjusting screw matched with the locking block, a mounting clamp matched with the adjusting screw, a transition rod connected with the circumferential limiting body, a pin for connecting the circumferential limiting body and the transition rod, a fixing plate connected with the transition rod, and an auxiliary fixing plate connected with the fixing plate and the fixing ring of the gear mold;

[0009] The axial limiting unit is used for axially limiting the gear mold fixing ring, and the circumferential rotation limiting unit is used for circumferentially limiting the gear mold fixing ring.

[0010] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, wherein: the axial limiting fixing plate includes a first multiple-row connection hole and a core clamping claw connection hole matching the multiple-row connection hole at one end;

[0011] The steering connecting plate comprises a second plurality of rows of connecting holes arranged at one end, and two groups of connecting holes matched with the axial limiting fixing plate.

[0012] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, wherein: the tightening assembly includes a first working surface and a second working surface at an angle of 90° to each other, two groups of connecting holes are provided on the first working surface, and a threaded hole is provided on the second working surface, and the lower edge of the second working surface is set to be in an arc shape;

[0013] The pin bolt comprises a positioning part and a fastening part. The positioning part and the connecting piece are matched with each other with a small gap, and the fastening part is provided with threads.

[0014] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the circumferential limiting body includes a guide groove opened in the middle, a threaded hole opened at one end of the circumferential limiting body, a first notch opened at the other end, and a pin hole perpendicular to the first notch, the width of the guide groove is dynamically matched with the outer diameter of the winding machine frame fixing rod, and the circumferential limiting body can rotate circumferentially and move axially around the winding machine frame fixing rod.

[0015] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the locking block includes a main body that flexibly cooperates with the guide groove, a circular arc-shaped cooperation end is provided at one end of the locking block, the radius of the cooperation end is consistent with the radius of the winding machine frame fixing rod, the other end of the locking block is a plane and has a second slot, and the width of the locking block flexibly cooperates with the width of the guide groove.

[0016] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, wherein: the adjusting screw includes a handle at one end and a first step and a groove for installing a mounting clamp at the other end;

[0017] The mounting card is set as a rectangular structure with a mounting hole in the middle. The mounting card is set as a half structure with a mounting hole in the middle whose diameter is larger than the diameter of the adjusting screw groove and smaller than the diameter of the adjusting screw end. The thickness of the mounting card is smaller than the depth.

[0018] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the transition rod includes one end which is set in a flat iron shape and has a pin hole, and the other end has a threaded hole.

[0019] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the pin includes a second step at one end and a shaft retaining ring groove at the other end, and the outer diameter of the second step is larger than the outer diameter of the pin hole.

[0020] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the fixing plate includes a flat steel-shaped component with a screw connected to the transition rod at one end and multiple groups of connecting holes at the other end of the fixing plate.

[0021] As a preferred solution of the three-dimensional wound core transformer gear mold limiting device of the present invention, the auxiliary fixing plate is provided with a flat iron-shaped component with a row of holes, one end of which is connected to the gear mold fixing ring and the other end is connected to the fixing plate to form a triangular stable structure.

[0022] Beneficial effects of the present invention: The present invention adopts a multi-row connection hole design through the axial limit unit, and cooperates with the precise positioning and tightening function of the pin bolt, which can adapt to the cores of different diameters and phase spacings, thereby improving the applicability and connection accuracy. The circumferential rotation limit unit achieves adaptation to the winding of coils with different inner diameters and heights through the cooperation of the circumferential limit body, the locking block and the adjusting screw. The triangular stable structure formed by the fixed plate and the auxiliary fixed plate. It solves the problem of axial and circumferential fixation failure of the fixing ring in the coil winding process of large-capacity, high-voltage three-dimensional wound core transformers, prevents quality defects such as the inability to continue winding the coil and the fixing ring hitting the core, significantly improves the efficiency and quality of transformer manufacturing, and realizes all-round limitation of the fixing ring of the gear mold of the three-dimensional wound core transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of the gear mold limiting device of the three-dimensional wound core transformer.

[0025] Figure 2 It is a right view schematic diagram of the overall structure of the three-dimensional wound core transformer gear mold limiting device.

[0026] Figure 3 It is a schematic diagram of the structure of the tightening assembly of the gear mold limiting device of the three-dimensional wound core transformer.

[0027] Figure 4 It is a schematic diagram of the circumferential limiting body structure of the three-dimensional wound core transformer gear mold limiting device.

[0028] Figure 5 This is a schematic diagram of the pin bolt structure of the gear mold limiting device of the three-dimensional wound core transformer.

[0029] Figure 6 This is a schematic diagram of the installation of the adjusting screw of the gear mold limit device of the three-dimensional wound core transformer. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figures 1-2, which is the first embodiment of the present invention, provides a three-dimensional wound core transformer gear mold limiting device, which includes an axial limiting unit 100 and a circumferential rotation limiting unit 200. The axial limiting fixing plate 101 is connected to the core clamping claw 101a through a pin bolt 104 to provide fixed support for the axial limiting of the gear plate. The steering connecting plate 102 is vertically connected to the axial limiting fixing plate 101 to achieve a 90° turn, which increases the adaptability of the device. The tightening assembly 103 is connected to the steering connecting plate 102 and abuts against the gear mold fixing ring 300. The axial limiting tightness control of the gear mold can be achieved through adjustment. A guide groove is provided in the middle of the circumferential limiting body 201, which is dynamically matched with the winding machine frame fixing rod 201b, and can rotate circumferentially and move axially around the fixing rod. The locking block 202 is dynamically matched with the guide groove of the circumferential limiting body 201, and locking is achieved by adjusting the screw 203 and the mounting clamping plate 204. The transition rod 205 is connected to the circumferential limiting body 201 through a pin 206, and the other end is connected to the fixing plate 207. The fixing plate 207 is connected to the gear mold fixing ring 300 through bolts, and the auxiliary fixing plate 208 forms a triangular stable structure with the fixing plate 207 and the gear mold fixing ring 300 to achieve reliable limiting of the circumferential rotation of the gear mold fixing ring.

[0035] Specifically, the axial limiting unit 100 includes an axial limiting fixing plate 101, a steering connecting plate 102 vertically connected to the axial limiting fixing plate 101, a tightening assembly 103 connected to the steering connecting plate 102, and a pin bolt 104 for connecting the axial limiting fixing plate 101 and the steering connecting plate 102;

[0036] The circumferential rotation limiting unit 200 includes a circumferential limiting body 201, a locking block 202 movably matched with the guide groove of the circumferential limiting body 201, an adjusting screw 203 matched with the locking block 202, a mounting clamping plate 204 matched with the adjusting screw 203, a transition rod 205 connected with the circumferential limiting body 201, a pin 206 for connecting the circumferential limiting body 201 and the transition rod 205, a fixing plate 207 connected with the transition rod 205, and an auxiliary fixing plate 208 connected with the fixing plate 207 and the gear mold fixing ring;

[0037] The axial limiting unit 100 is used to limit the gear mold fixing ring 300 axially, and the circumferential rotation limiting unit 200 is used to limit the gear mold fixing ring 300 circumferentially.

[0038] In summary, the present invention adopts a multi-row connection hole design through the axial limit unit, and cooperates with the precise positioning and tightening function of the pin bolts, which can adapt to the cores of different diameters and phase spacings, thereby improving the applicability and connection accuracy. The circumferential rotation limit unit achieves adaptation to the winding of coils with different inner diameters and heights through the cooperation of the circumferential limit body, the locking block and the adjusting screw. The triangular stable structure formed by the fixed plate and the auxiliary fixed plate. It solves the problem of axial and circumferential fixation failure of the fixing ring in the process of winding the coil of a large-capacity, high-voltage three-dimensional wound core transformer, prevents quality defects such as the inability to continue winding the coil and the fixing ring hitting the core, significantly improves the efficiency and quality of transformer manufacturing, and realizes all-round limitation of the fixing ring of the gear mold of the three-dimensional wound core transformer.

[0039] Example 2

[0040] Reference Figures 1 to 6 , which is the second embodiment of the present invention, and provides a three-dimensional wound core transformer gear mold limiting device, which includes an axial limiting unit 100 and a circumferential rotation limiting unit 200. The axial limiting fixing plate 101 is connected to the core clamping claw 101a through a pin bolt 104 to provide fixed support for the axial limiting of the gear plate. The steering connecting plate 102 is vertically connected to the axial limiting fixing plate 101 to achieve a 90° turn, which increases the adaptability of the device. The tightening assembly 103 is connected to the steering connecting plate 102 and abuts against the gear mold fixing ring 300. The axial limiting tightness control of the gear mold can be achieved through adjustment. A guide groove is provided in the middle of the circumferential limiting body 201, which is dynamically matched with the winding machine frame fixing rod 201b, and can rotate circumferentially and move axially around the fixing rod. The locking block 202 is dynamically matched with the guide groove of the circumferential limiting body 201, and locking is achieved by adjusting the screw 203 and the mounting clamping plate 204. The transition rod 205 is connected to the circumferential limiting body 201 through a pin 206, and the other end is connected to the fixing plate 207. The fixing plate 207 is connected to the gear mold fixing ring 300 through bolts, and the auxiliary fixing plate 208 forms a triangular stable structure with the fixing plate 207 and the gear mold fixing ring 300 to achieve reliable limiting of the circumferential rotation of the gear mold fixing ring.

[0041] Specifically, the axial limiting unit 100 includes an axial limiting fixing plate 101, a steering connecting plate 102 vertically connected to the axial limiting fixing plate 101, a tightening assembly 103 connected to the steering connecting plate 102, and a pin bolt 104 for connecting the axial limiting fixing plate 101 and the steering connecting plate 102;

[0042] The circumferential rotation limiting unit 200 includes a circumferential limiting body 201, a locking block 202 movably matched with the guide groove of the circumferential limiting body 201, an adjusting screw 203 matched with the locking block 202, a mounting clamping plate 204 matched with the adjusting screw 203, a transition rod 205 connected with the circumferential limiting body 201, a pin 206 for connecting the circumferential limiting body 201 and the transition rod 205, a fixing plate 207 connected with the transition rod 205, and an auxiliary fixing plate 208 connected with the fixing plate 207 and the gear mold fixing ring;

[0043] The axial limiting unit 100 is used to limit the gear mold fixing ring 300 axially, and the circumferential rotation limiting unit 200 is used to limit the gear mold fixing ring 300 circumferentially.

[0044] Further, the axial limit fixing plate 101 includes a first plurality of rows of connection holes and a core clamping claw 101a connection hole matched with the plurality of rows of connection holes at one end;

[0045] The steering connecting plate 102 includes a second plurality of rows of connecting holes disposed at one end, and two groups of connecting holes cooperating with the axial limiting fixing plate 101 .

[0046] Furthermore, the tightening assembly 103 includes a first working surface 103a and a second working surface 103b which are at an angle of 90° to each other, two groups of connecting holes are provided on the first working surface 103a, and a threaded hole is provided on the second working surface 103b, and the lower edge of the second working surface 103b is set to be in an arc shape;

[0047] The pin bolt 104 includes a positioning portion and a fastening portion. The positioning portion and the connecting member are fitted with a small gap, and the fastening portion is provided with threads.

[0048] Preferably, the pin bolt 104 realizes the positioning of the two connecting parts by forming a small gap between the positioning part and the connecting piece, and realizes the fastening of the two connecting parts by the thread of the fastening part, thereby improving the connection accuracy. A second plurality of connecting holes are opened at one end of the steering connecting plate 102, and the lateral spacing between the connecting holes on the steering connecting plate 102 is matched with the two connecting holes at one end of the axial limiting fixing plate 101. The steering connecting plate 102 is connected to the axial limiting fixing plate 101 as a whole by the pin bolt 104, and a 90° rotation with the axial limiting fixing plate 101 is realized. The second multiple rows of connecting holes arranged on the steering connecting plate 102 can realize the adjustment of the core diameter and the phase spacing of the core columns within a certain range. The clamping component 103 is a right-angled component composed of two working surfaces at an angle of 90° to each other. Two connecting holes are opened on one working surface, which is connected to the steering connecting plate 102 by a pin bolt 104. The other working surface is provided with a threaded hole. The axial limit tightness of the gear mold fixing ring can be adjusted by screwing the tightening bolt in and out. The lower edge of the working surface of the clamping component 103 with the threaded hole is in an arc shape to better adapt to the use with the outer contour of the core column.

[0049] Furthermore, the circumferential limiting body 201 includes a guide groove 201a opened in the middle, a threaded hole opened at one end of the circumferential limiting body 201, a first notch opened at the other end, and a pin hole perpendicular to the first notch. The width of the guide groove 201a is dynamically matched with the outer diameter of the winding machine frame fixing rod 201b, and the circumferential limiting body 201 can rotate circumferentially and move axially around the winding machine frame fixing rod 201b.

[0050] Furthermore, the locking block 202 includes a main body that flexibly cooperates with the guide groove 201a, and a circular arc-shaped cooperation end is provided at one end of the locking block 202, and the radius of the cooperation end is consistent with the radius of the winding machine frame fixing rod 201b. The other end of the locking block 202 is a plane and has a second slot, and the width of the locking block 202 forms a dynamic cooperation with the width of the guide groove 201a.

[0051] Furthermore, the adjusting screw 203 includes a handle 203a at one end and a first step and a groove for mounting the mounting clamp 204 at the other end;

[0052] The mounting card plate 204 is set as a rectangular structure with a mounting hole in the middle. The mounting card plate 204 is set as a half structure with a mounting hole in the middle having a diameter larger than the diameter of the groove of the adjusting screw 203 and smaller than the diameter of the end of the adjusting screw 203. The thickness of the mounting card plate 204 is smaller than the depth.

[0053] Preferably, after the circumferential limiting body 201 is connected to the transition rod 205 by the pin 206, it is limited by the shaft with a retaining ring. The auxiliary fixing plate 208 is a flat iron-like component with a row of holes, one end of which is connected to the gear mold fixing ring 300, and the other end is connected to the fixing plate 207, forming a triangular stable support for the gear mold fixing ring 300, thereby limiting the circumferential rotation of the gear mold fixing ring 300.

[0054] Furthermore, the transition rod 205 includes a flat iron shape at one end with a pin hole, and a threaded hole at the other end.

[0055] Furthermore, the pin 206 includes a second step at one end and a shaft retaining ring groove at the other end of the pin 206, and the outer diameter of the second step is greater than the outer diameter of the pin hole.

[0056] Furthermore, the fixing plate 207 includes a flat steel-shaped component with a screw rod 207a connected to the transition rod 205 at one end and a plurality of connection holes at the other end of the fixing plate 207.

[0057] Furthermore, the auxiliary fixing plate 208 is provided with a flat iron-shaped component with rows of holes, one end of which is connected to the gear mold fixing ring 300 and the other end is connected to the fixing plate 207 to form a triangular stable structure.

[0058] It should be noted that the pin bolt 104 achieves positioning of the two connecting parts by forming a small gap between the positioning part and the connecting part, and achieves fastening of the two connecting parts through the thread of the fastening part, thereby improving the connection accuracy. The multiple rows of connecting holes provided on the axial limit fixing plate 101 can achieve the adjustment of the core diameter and the core column phase spacing within a certain range. The multiple rows of connecting holes provided on the steering connecting plate 102 can achieve the adjustment of the core diameter and the core column phase spacing within a certain range. The lower edge of the working surface of the tightening component 103 with the threaded hole is in an arc shape to better adapt to the use with the outer contour of the core column.

[0059] When in use, the core 105 is reliably clamped by the core support frame core clamp 101a, and the left and right rotating gears 106, track ring 107, fixed ring 300 and epoxy tube (paper tube) 108 of the gear mold are all reliably installed and adjusted. First, install the axial limit device. First, according to the position of the gear mold fixed ring 300 relative to the core clamp 101a, determine the connection hole between the axial limit fixing plate 101 and the core clamp 101a, and fix it with a pin bolt 104. Then, according to the position of the axial limit fixing plate 101 relative to the gear mold fixed ring 300, determine the connection hole between the steering connecting plate 102 and the axial limit fixing plate 101, and fix it with a pin bolt 104. Then use the pin bolt 104 to fix the top tightening assembly 103 to the other end of the steering connecting plate 102. Then, according to the position of the threaded hole of the top tightening assembly 103 relative to the gear mold fixed ring 300, determine the threaded hole for installing the tightening bolt, and generally install two tightening bolts. The axial limiting unit 100 has two sets of devices on the outside of the left and right gear mold fixing rings 300, which are used in combination to achieve axial limiting of the left and right gear mold fixing rings 300.

[0060] Confirm that the axial limit units 100 of the left and right gear mold fixing rings have been installed and adjusted. Screw the adjusting screw 203 with the handwheel into thread engagement with the end of the circumferential limit body 201. Install the locking block 202 into the guide groove in the middle of the circumferential limit body 201, and make the end of the adjusting screw with the step and groove of the mounting clamp 204 match the notch at one end of the locking block. Install the mounting clamp 204 into the groove position of the adjusting screw 203, and fix the mounting clamp 204 and the locking block 202 into one. Insert the flat connecting surface at one end of the transition rod 205 into the connecting notch at one end of the locking block 202, align the two connecting holes, insert the pin 206 into the connecting hole, and install the retaining ring in the retaining ring groove of the pin 206 to connect the transition rod 205 to the circumferential limit body.

[0061] Assemble the circumferential limiter 201 together with the locking block 202, the adjusting screw 203 and the transition rod 205 to the winding machine frame fixing rod 201b, and adjust the axial position of the circumferential limiter 201 on the winding machine frame fixing rod 201b so that the circumferential limiter 201 is basically aligned with the outer side of the gear mold fixing ring 300. Assemble the fixing plate 207 with the transition rod 205 through the connecting thread at one end, adjust the screwing length of the fixing plate 207 and the transition rod 205 according to the position of the mounting hole on the gear mold fixing ring 300, so that the mounting hole of the fixing plate 207 is aligned with the mounting hole on the gear mold fixing ring 300, and fix the fixing plate 207 and the gear mold fixing ring 300 together with bolts. According to the mounting holes on the fixing plate 207 and the gear mold fixing ring 300, the mounting holes of the auxiliary fixing plate 208 are determined, and the fixing plate 207, the gear mold fixing ring 300 and the auxiliary fixing plate 208 are connected together with bolts to form a triangular stable connection structure, thereby realizing reliable limiting of the circumferential rotation of the gear mold fixing ring 300.

[0062] In summary, the present invention adopts a multi-row connection hole design through the axial limit unit, and cooperates with the precise positioning and tightening function of the pin bolts, which can adapt to the cores of different diameters and phase spacings, thereby improving the applicability and connection accuracy. The circumferential rotation limit unit achieves adaptation to the winding of coils with different inner diameters and heights through the cooperation of the circumferential limit body, the locking block and the adjusting screw. The triangular stable structure formed by the fixed plate and the auxiliary fixed plate. It solves the problem of axial and circumferential fixation failure of the fixing ring in the process of winding the coil of a large-capacity, high-voltage three-dimensional wound core transformer, prevents quality defects such as the inability to continue winding the coil and the fixing ring hitting the core, significantly improves the efficiency and quality of transformer manufacturing, and realizes all-round limitation of the fixing ring of the gear mold of the three-dimensional wound core transformer.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A three-dimensional wound core transformer gear mold limiting device, Features: include, An axial limiting unit (100) comprises an axial limiting fixing plate (101), a steering connecting plate (102) vertically connected to the axial limiting fixing plate (101), a tightening assembly (103) connected to the steering connecting plate (102), and a pin bolt (104) for connecting the axial limiting fixing plate (101) and the steering connecting plate (102); A circumferential rotation limiting unit (200), comprising a circumferential limiting body (201), a locking block (202) movably matched with a guide groove of the circumferential limiting body (201), an adjusting screw (203) matched with the locking block (202), a mounting clamping plate (204) matched with the adjusting screw (203), a transition rod (205) connected with the circumferential limiting body (201), a pin (206) for connecting the circumferential limiting body (201) and the transition rod (205), a fixing plate (207) connected with the transition rod (205), and an auxiliary fixing plate (208) connected with the fixing plate (207) and a gear mold fixing ring; The axial limiting unit (100) is used to axially limit the gear mold fixing ring (300), and the circumferential rotation limiting unit (200) is used to circumferentially limit the gear mold fixing ring (300).

2. The gear mold limiting device for a three-dimensional wound core transformer according to claim 1, Features: The axial limiting fixing plate (101) comprises a first plurality of rows of connection holes provided at one end, and a core clamping claw (101a) connection hole matched with the plurality of rows of connection holes; The steering connection plate (102) comprises a second plurality of rows of connection holes provided at one end, and two groups of connection holes cooperating with the axial limiting fixing plate (101).

3. The gear mold limiting device for a three-dimensional wound core transformer according to claim 2, Features: The tightening assembly (103) comprises a first working surface (103a) and a second working surface (103b) which are at an angle of 90° to each other, the first working surface (103a) is provided with two groups of connecting holes, the second working surface (103b) is provided with a threaded hole, and the lower edge of the second working surface (103b) is arranged to be in an arc shape; The pin bolt (104) comprises a positioning portion and a fastening portion, wherein the positioning portion and the connecting member are matched with each other with a small gap, and the fastening portion is provided with a thread.

4. The gear mold limiting device for a three-dimensional wound core transformer according to claim 3, Features: The circumferential limiting body (201) comprises a guide groove (201a) provided in the middle, a threaded hole provided at one end of the circumferential limiting body (201), a first notch provided at the other end, and a pin hole perpendicular to the first notch. The width of the guide groove (201a) is dynamically matched with the outer diameter of the winding machine frame fixing rod (201b). The circumferential limiting body (201) can rotate circumferentially and move axially around the winding machine frame fixing rod (201b).

5. The gear mold limiting device for a three-dimensional wound core transformer according to claim 4, Features: The locking movable block (202) comprises a main body part that dynamically cooperates with the guide groove (201a); one end of the locking movable block (202) is provided with an arc-shaped cooperation end, the radius of the cooperation end is consistent with the radius of the winding machine frame fixing rod (201b); the other end of the locking movable block (202) is a plane and has a second notch; the width of the locking movable block (202) forms a dynamic cooperation with the width of the guide groove (201a).

6. The gear mold limiting device for a three-dimensional wound core transformer according to claim 5, Features: The adjusting screw rod (203) comprises a handle (203a) at one end and a first step and a groove for mounting the mounting clamp (204) at the other end; The mounting card plate (204) is configured as a rectangular structure with a mounting hole in the middle. The mounting card plate (204) is configured as a half structure with a mounting hole in the middle having a diameter greater than the diameter of the groove of the adjusting screw (203) and smaller than the diameter of the end of the adjusting screw (203). The thickness of the mounting card plate (204) is smaller than the depth.

7. The gear mold limiting device for a three-dimensional wound core transformer according to claim 6, Features: The transition rod (205) comprises a flat iron-shaped end with a pin hole, and a threaded hole at the other end.

8. The gear mold limiting device for a three-dimensional wound core transformer according to claim 7, Features: The pin (206) comprises a second step at one end and a shaft retaining ring groove at the other end of the pin (206), wherein the outer diameter of the second step is greater than the outer diameter of the pin hole.

9. The gear mold limiting device for a three-dimensional wound core transformer according to claim 8, Features: The fixing plate (207) comprises a flat steel-shaped component having a screw rod (207a) connected to the transition rod (205) at one end and a plurality of connection holes at the other end of the fixing plate (207).

10. The gear mold limiting device for a three-dimensional wound core transformer according to claim 9, Features: The auxiliary fixing plate (208) is provided with a flat iron-shaped component with rows of holes, one end of which is connected to the gear mold fixing ring (300) and the other end of which is connected to the fixing plate (207), forming a triangular stable structure.

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