CN113628867B - Manufacturing frame, manufacturing device and manufacturing method of transformer iron core - Google Patents
Manufacturing frame, manufacturing device and manufacturing method of transformer iron core Download PDFInfo
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- CN113628867B CN113628867B CN202110917959.1A CN202110917959A CN113628867B CN 113628867 B CN113628867 B CN 113628867B CN 202110917959 A CN202110917959 A CN 202110917959A CN 113628867 B CN113628867 B CN 113628867B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 296
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 60
- 229910052742 iron Inorganic materials 0.000 claims abstract description 132
- 238000005452 bending Methods 0.000 claims abstract description 23
- 238000010030 laminating Methods 0.000 claims description 7
- 238000003475 lamination Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a manufacturing frame of a transformer iron core, which comprises an upper clamping piece used for clamping an upper iron yoke iron sheet, a lower clamping piece used for clamping a lower iron yoke iron sheet, and a first connecting rod used for connecting the upper clamping piece and the lower clamping piece; an upper top plate and a lower top plate are respectively arranged at two ends of the first connecting rod, and are perpendicular to the first connecting rod; the upper clamping piece and the lower clamping piece are positioned between the upper top plate and the lower top plate; the distance between the upper top plate and the lower top plate is consistent with the height of the transformer core. Due to the adoption of the technical scheme, compared with the prior art, the transformer iron core bending, folding and curing treatment can be realized only by one set of equipment. In addition, by arranging the mounting frame, the three-phase transformer iron core is convenient to operate respectively by using the transformer iron core three-phase device.
Description
Technical Field
The invention relates to the field of transformer cores, in particular to a manufacturing frame, a manufacturing device and a manufacturing method of a transformer core.
Background
The iron core of the transformer is a main magnetic circuit part in the transformer, the magnetic circuit of the iron core is very small, a very strong induction magnetic field can be obtained through the iron core, and the iron core and a coil wound on the iron core form a complete electromagnetic induction system. The iron core comprises an iron core column sleeved with a coil and an iron yoke not sleeved with the coil and only playing a role of a closed magnetic circuit, wherein the iron core column is formed by superposing a plurality of iron core column iron sheets, the iron yoke is formed by superposing a plurality of iron yoke iron sheets, thus a hollow iron core structure is formed, the coil is provided with two or more windings, the windings connected with a power supply are primary windings, and the rest windings are secondary windings.
Three-phase transformers are evolved from three single-phase transformers, and the main flux of each phase must be closed by the magnetic circuit of the other two phases, so that the three-phase magnetic circuits are related to each other. The iron core of the three-phase transformer is in a plane structure, the lengths of magnetic circuits of three phases are unequal, the magnetic circuit of the middle phase is short, and the magnetic circuits of the other two phases are long, so that the magnetic resistances of the three phases are slightly different. When three-phase symmetrical voltage is externally applied, three-phase no-load currents are unequal, the magnetic path lengths are different, the magnetic path directions are also different, the current of the middle phase is small, and the other two phases are large, so that the load operation of the transformer is influenced, and a part of loss is caused.
In order to overcome the defects, the Chinese patent publication No. CN110459385A discloses a transformer and an iron core thereof, wherein the iron core of the transformer is changed into a Y-shaped structure, and each side of the Y-shaped structure is formed by overlapping a plurality of bent iron yoke iron sheets side by side, so that the problem of magnetic circuit symmetry is solved.
The Chinese patent publication No. CN112259339A discloses a manufacturing method and a manufacturing device of the Y-shaped transformer iron core, wherein the manufacturing method firstly needs to utilize the space between the V-shaped bulge and the V-shaped groove which are matched with each other to bend and fold iron yoke iron sheets, and then uses a clamp to cure the folded iron core units. The defects are that: the bending, folding and curing processes require the use of two different devices, respectively.
Disclosure of Invention
In order to solve the problem that two different devices are needed when bending, overlapping and curing are carried out in the prior art, the invention provides a manufacturing frame of a transformer iron core.
The manufacturing frame of the transformer iron core comprises an upper clamping piece for clamping an upper iron yoke iron sheet, a lower clamping piece for clamping a lower iron yoke iron sheet, and a first connecting rod for connecting the upper clamping piece and the lower clamping piece; an upper top plate and a lower top plate are respectively arranged at two ends of the first connecting rod, and are perpendicular to the first connecting rod; the upper clamping piece and the lower clamping piece are positioned between the upper top plate and the lower top plate; the distance between the upper top plate and the lower top plate is consistent with the height of the transformer core.
The structure is characterized in that the upper top plate and the lower top plate are arranged, so that the bending, overlapping and curing treatment of the transformer iron core can be realized only through the equipment.
Preferably, the upper clamping piece comprises three upper outer clamping plates which are arranged at intervals in a Y shape, an upper clamping block arranged at the center of the three upper outer clamping plates and a second connecting rod; the shape of the upper clamping block is a triangular prism; the three upper outer clamping plates are respectively and correspondingly arranged with the three side surfaces of the upper clamping block one by one, and are respectively connected with the three side surfaces of the upper clamping block through the second connecting rods to clamp the upper iron yoke iron sheet between the upper outer clamping plates and the upper clamping block;
The lower clamping piece comprises three lower outer clamping plates which are arranged at intervals in a Y shape, lower clamping blocks arranged at the centers of the three lower outer clamping plates, and a third connecting rod; the shape of the lower clamping block is a triangular prism; the three lower outer clamping plates are respectively and correspondingly arranged with the three side surfaces of the lower clamping block one by one, and are respectively connected with the three side surfaces of the lower clamping block through the third connecting rods to clamp the lower iron yoke iron sheet between the lower outer clamping plate and the lower clamping block;
And two ends of the first connecting rod are respectively connected with the upper clamping block and the lower clamping block.
Preferably, the upper outer clamping plate and the lower outer clamping plate are identical in shape and comprise a first straight plate, a first circular arc plate and a second straight plate which are sequentially connected, wherein an included angle between the first straight plate and the second straight plate is 120 degrees;
the three side surfaces of the upper clamping block and the lower clamping block are cambered surfaces; the cambered surface is concentric with the first circular arc plate, and the circular arc radius of the cambered surface Wherein R1 is the arc radius of the first arc plate, and D is the thickness of the transformer core.
The device aims at manufacturing the Y-shaped transformer iron core, so that the outlines of the upper outer clamping plate, the lower outer clamping plate, the upper clamping block and the lower clamping block are matched with the shape of the iron core. Preferably, the two ends of the upper outer clamping plate are provided with first bolt holes; and second bolt holes are formed in the two ends of the lower outer clamping plate. From this, can pass first bolt hole through the bolt between two adjacent upper outer splint and fasten, can pass the second bolt hole through the bolt between two adjacent lower outer splint and fasten.
Preferably, the device further comprises a supporting plate, wherein the supporting plate comprises a third straight plate, a second circular arc plate and a fourth straight plate which are sequentially connected, and the included angle between the third straight plate and the fourth straight plate is 120 degrees; the arc radius of the second arc plate is consistent with the arc radius of the cambered surface; and a mounting hole is formed in the middle of the second arc plate.
Preferably, the support plate is provided with an upper support plate and a lower support plate, the upper support plate and the lower support plate are arranged side by side at intervals, and two wings of the upper support plate are fixedly connected with two wings of the lower connection plate through a first connection plate and a second connection plate respectively.
Therefore, when the one-phase iron yoke iron sheet is subjected to bending operation, the second circular arc plate of the supporting plate can be clung to the mounting holes and penetrates through the mounting holes through the threaded fasteners, the supporting plate is fixed on the cambered surfaces corresponding to the other two corresponding upper clamping blocks and the other two corresponding lower clamping blocks, and at the moment, the third straight plate and the fourth straight plate of the supporting plate can play a supporting role on two ends of the iron yoke iron sheet to be bent, so that the two ends of the iron yoke iron sheet are prevented from deforming in the bending process. Through connecting the two wings of the upper supporting plate and the lower supporting plate through the connecting plate, the bending operation is simpler and faster.
Based on the same inventive concept, the invention also provides a manufacturing device of the transformer core, which comprises the manufacturing frame of the transformer core, the supporting plate and a mounting frame for placing the manufacturing device of the transformer core; the mounting frame comprises a mounting seat and two brackets arranged at two ends of the mounting seat; the distance between the two brackets is smaller than the length of the first connecting rod and larger than the distance between the upper top plate and the lower top plate;
and a positioning structure is arranged between the upper top plate and/or the lower top plate and the bracket.
When the rotary rack is used, the manufacturing rack is horizontally placed on the mounting rack, and the manufacturing rack can rotate by taking the first connecting rod as a rotating shaft. Further, a positioning structure is further arranged for positioning the manufacturing frame on the mounting frame, so that three phases of the transformer core are conveniently operated respectively.
Preferably, the positioning structure comprises three first positioning holes uniformly formed in the upper top plate and/or the lower top plate, a second positioning hole formed in the mounting bracket, and a positioning pin capable of penetrating through the first positioning holes and the second positioning holes.
Based on the same inventive concept, the invention also provides a manufacturing method of the transformer core, which utilizes the manufacturing device of the transformer core, and comprises the following steps:
S1, positioning a manufacturing frame on a mounting frame;
S2, mounting support plates on the second side surface and the third side surface of the upper clamping block and the lower clamping block; laminating and bending the upper iron yoke iron sheet and the lower iron yoke iron sheet on the first side surfaces of the upper clamping block and the lower clamping block;
S3, the positioning is released, and the manufacturing frame is positioned on the mounting frame again after the manufacturing frame is rotated for 120 degrees; removing the support plates mounted on the second sides of the upper and lower clamp blocks; laminating and bending the upper iron yoke iron sheet and the lower iron yoke iron sheet on the second side surfaces of the upper clamping block and the lower clamping block;
S4, the positioning is released, the rotated manufacturing frame is rotated for 120 degrees again, and the manufacturing frame is positioned on the mounting frame again; removing the support plates mounted on the third sides of the upper and lower clamp blocks; and laminating and bending the upper iron yoke iron sheet, the lower iron yoke iron sheet on the third side surfaces of the upper clamping block and the lower clamping block.
Specifically, the lamination and bending of the upper iron yoke sheet and the lower iron yoke sheet comprise the following steps:
connecting the second connecting rod with one side of the upper clamping block, and connecting one end of the third connecting rod with one side of the lower clamping block; one side surface of the upper clamping block and one side surface of the lower clamping block are on the same curved surface;
A plurality of upper iron yoke iron sheets pass through the second connecting rod through holes in the middle of the upper iron yoke iron sheets and then are sequentially stacked on one side surface of the upper clamping block; a plurality of lower iron yoke iron sheets pass through the third connecting rod through holes in the middle of the lower iron yoke iron sheets and then are sequentially stacked on one side surface of the lower clamping block;
The upper outer clamping plate penetrates through the second connecting rod, and nuts are sleeved on the second connecting rod and screwed up to bend the upper iron yoke iron sheet; and (3) enabling the lower outer clamping plate to pass through the third connecting rod, sleeving a nut on the third connecting rod, and screwing up the nut so as to bend the lower iron yoke iron sheet.
By adopting the technical scheme, compared with the prior art, the transformer iron core bending, folding and curing treatment can be realized by only one set of equipment. In addition, by arranging the mounting frame, the three-phase transformer iron core is convenient to operate respectively by using the transformer iron core three-phase device.
Drawings
Fig. 1 is a schematic structural view of a manufacturing frame of a transformer core according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a fixing sleeve according to an embodiment of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic diagram of an upper clamping block according to an embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic view of an upper top plate according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the upper and lower clamping plates according to an embodiment of the present invention;
FIG. 8 is a front view of FIG. 7;
FIG. 9 is a schematic diagram showing the relationship between the radius of the arc surface of the first arc plate and the radius of the arc surface of the side surface of the upper clamping block according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a second connecting rod according to an embodiment of the present invention;
FIG. 11 is a front view of FIG. 10;
FIG. 12 is a cross-sectional view A-A of FIG. 11;
FIG. 13 is a schematic view showing a structure of a first connecting rod according to an embodiment of the present invention;
FIG. 14 is a schematic diagram showing the connection relationship between the third connecting rod and the lower clamping block according to an embodiment of the present invention;
FIG. 15 is a schematic view of a mounting frame according to an embodiment of the present invention;
fig. 16 is a schematic view showing a state in which a manufacturing frame of a transformer core is mounted on a mounting frame according to an embodiment of the present invention;
FIG. 17 is a schematic view showing the structure of a support plate according to an embodiment of the present invention;
FIG. 18 is a top view of FIG. 17;
FIG. 19 is a schematic view showing a state in which a first phase iron yoke iron sheet is mounted in accordance with an embodiment of the present invention;
FIG. 20 is a schematic view showing a state in which a second phase iron yoke iron sheet is mounted according to an embodiment of the present invention;
FIG. 21 is a schematic view showing a connection structure of a support plate and a connection plate according to an embodiment of the present invention;
FIG. 22 is a schematic view showing a connection structure of two sets of support plates according to an embodiment of the present invention;
Fig. 23 is a schematic view showing a state in which the first-phase iron yoke iron sheet is mounted in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1, a manufacturing frame of a transformer core includes an upper clamp for clamping an upper yoke iron piece, a lower clamp for clamping a lower yoke iron piece, and a first connection rod 1 for connecting the upper clamp and the lower clamp. An upper top plate 2 is arranged above the upper clamping piece, and a lower top plate 3 is arranged below the lower clamping piece. The upper top plate 2 and the lower top plate 3 are perpendicular to the first connecting rod 1. The distance between the upper top plate 2 and the lower top plate 3 is consistent with the height of the transformer core.
Specifically, the upper clamping piece comprises three upper outer clamping plates 41 which are arranged at intervals in a Y shape, and an upper clamping block 42 which is arranged at the center of the three upper outer clamping plates 41. The upper clamping block 42 is in a triangular prism shape; the three upper outer clamping plates 41 are respectively arranged in one-to-one correspondence with three side surfaces of the upper clamping block 42.
The lower clamping piece comprises three lower outer clamping plates 51 which are arranged at intervals in a Y shape, and lower clamping blocks 52 which are arranged at the centers of the three lower outer clamping plates; the shape of the lower clamping block 52 is a triangular prism; the three lower outer clamping plates 51 are respectively arranged in one-to-one correspondence with three sides of the lower clamping block 52.
As shown in fig. 1-6, the two ends, the upper portion and the lower portion of the first connecting rod 1 are further provided with a fixing sleeve 11, the fixing sleeve 11 is cylindrical, and the middle portion of the fixing sleeve is provided with a through hole for the first connecting rod 1 to pass through. Through holes which can be penetrated by the first connecting rod 1 are vertically formed in the centers of the upper clamping block 42 and the upper top plate 2, and through holes which can be penetrated by the first connecting rod 1 are vertically formed in the centers of the lower clamping block 52 and the lower top plate 3. The upper clamp block 42 and the upper top plate 2 are sandwiched between the two fixing sleeves 11 located at the top end and the upper portion of the first connecting rod 1, and the lower clamp block 52 and the lower top plate 3 are sandwiched between the two fixing sleeves 11 located at the bottom end and the lower portion of the first connecting rod 1. As shown in fig. 1 and 3, the side of the fixing sleeve 11 is provided with a screw hole 111, and the fixing sleeve 11 can be fixed on the first connecting rod 1 through the screw hole 111 by a screw, so that the position of the fixing sleeve 11 on the first connecting rod 1 can be conveniently adjusted according to the height of the iron core.
As shown in fig. 1, 4-6, the upper clamping block 42 and the upper top plate 2 are further provided with matched positioning holes 21, and the positioning pins can pass through the positioning holes 21 to realize the mutual positioning of the upper clamping block 42 and the upper top plate 2. The lower clamping block 52 and the lower top plate 3 are also provided with matched positioning holes 21, and the positioning pins can pass through the positioning holes 21 to realize the mutual positioning of the lower clamping block 52 and the lower top plate 3.
As shown in fig. 7 to fig. 9, the upper outer clamping plate 41 and the lower outer clamping plate 51 have the same shape, and include a first straight plate 411, a first circular arc plate 412 and a second straight plate 413 which are sequentially connected, wherein an included angle between the first straight plate 411 and the second straight plate 413 is 120 °.
As shown in fig. 9 and 16, three sides of the upper clamping block 42 and the lower clamping block 52 are cambered surfaces; the cambered surface is concentric with the first circular arc plate, and the circular arc radius of the cambered surfaceWherein R1 is the arc radius of the first arc plate, and D is the thickness of the transformer core. /(I)And the sum of the thicknesses of the iron yoke iron sheets clamped between the cambered surface and the first circular arc plate after the iron yoke iron sheets are bent and formed.
As shown in fig. 1 and 10-14, three second connecting rods 43 and three third connecting rods 53 are further included.
Both ends of the second connecting rod 43 are respectively provided with a first threaded end 431, and the cambered surface is provided with a first threaded hole matched with the first threaded end 431. Two sides of one first threaded end 431 are provided with rectangular notches in a milling mode, and threaded connection is facilitated. Both ends of the third connecting rod 53 are respectively provided with a third threaded end 531, and the cambered surface is provided with a third threaded hole matched with the third threaded end 531. Rectangular notches are milled on two sides of one third threaded end 531, so that threaded connection is facilitated.
The second connecting rod 43 and the third connecting rod 53 are also sleeved with an insulating sleeve 7.
As shown in fig. 1 and 8, a through hole through which the insulating sleeve 7 can pass is provided in the middle of the first circular arc plate.
As shown in fig. 1-14, when assembling, the first threaded end 431 is screwed into the first threaded hole, so that one end of the second connecting rod 43 can be connected with the side surface of the upper clamping block 42; one end of the third connecting rod 53 is connected to the side of the lower clamp block 52 by screwing the third threaded end 531 into the third threaded hole.
The upper and lower yoke iron pieces are also provided with through holes through which the insulating bush 7 can pass. After the lamination operation of the upper yoke iron sheets is completed, the upper outer clamping plate 41 can penetrate into the second connecting rod 43 through the through hole in the middle of the upper outer clamping plate 41, and then the upper yoke iron sheets are bent by fastening nuts. After the lamination operation of the lower yoke iron sheets is completed, the lower outer clamping plate 51 can penetrate into the third connecting rod 53 through the through hole in the middle of the lower outer clamping plate, and then the lower yoke iron sheets are bent by fastening nuts.
As shown in fig. 1, 7 and 8, the two ends of the upper outer clamping plates 41 are further provided with first bolt holes 411 through which the adjacent two upper outer clamping plates 41 can be fastened by bolts 6. Second bolt holes are further formed in two ends of the lower outer clamping plates 51, and two adjacent lower outer clamping plates 51 can be fastened through the bolts 6 penetrating through the second bolt holes.
As shown in fig. 1 and 13, the top end of the first connecting rod 1 is provided with a threaded hole 12, which is convenient for lifting the manufacturing frame.
As shown in fig. 19 and 20, a support plate 9 is further included. The supporting plate 9 comprises a third straight plate 91, a second circular arc plate 92 and a fourth straight plate 93 which are sequentially connected, and the included angle between the third straight plate 91 and the fourth straight plate 93 is 120 degrees; the arc radius of the second arc plate 92 is identical to the arc radius of the arc surface of the upper clamping block 42, and both are R2. The middle part of the second circular arc plate 92 is provided with a mounting hole.
Example 2
This embodiment is substantially identical to embodiment 1, except that: as shown in fig. 21 and 22, the supporting plate 9 is provided with an upper part and a lower part, the upper part and the lower part are arranged side by side at intervals, and two wings of the upper supporting plate 91 are fixedly connected with two wings of the lower connecting plate 92 through a first connecting plate 93 and a second connecting plate 94 respectively.
Example 3
A manufacturing apparatus of a transformer core, comprising the manufacturing frame of a transformer core according to embodiment 1, and further comprising a mounting frame for placing the manufacturing apparatus of a transformer core. As shown in fig. 1, 15 and 16, the mounting frame comprises a mounting seat 8 and two brackets 81 arranged at two ends of the mounting seat; the distance between the two brackets 81 is smaller than the length of the first connecting rod 1 and larger than the distance between the upper top plate 2 and the lower top plate 3. And a positioning structure is arranged between the upper top plate 2 and the support 81, and between the lower top plate 3 and the support 81, and is used for positioning the manufacturing frame on the mounting frame.
Specifically, as shown in fig. 1, 15 and 16, the positioning structure includes three first positioning holes 82 uniformly formed on the upper and lower top plates 2 and 3 and a second positioning hole 83 formed on the mounting bracket, and positioning between the upper and lower top plates 2 and 81 and between the lower top plate 3 and the bracket 81, i.e., positioning the manufacturing frame on the mounting frame, can be achieved by inserting positioning pins between the first and second positioning holes 82 and 83.
Example 4
A method of manufacturing a transformer core using the apparatus for manufacturing a transformer core according to embodiment 2, comprising the steps of:
S1, positioning a manufacturing frame on a mounting frame;
s2, mounting support plates on the second side surface and the third side surface of the upper clamping block and the lower clamping block; lamination and bending of the upper yoke iron sheet, the lower yoke iron sheet are performed on the first side surfaces of the upper and lower clamp blocks (as shown in fig. 19);
S3, the positioning is released, and the manufacturing frame is positioned on the mounting frame again after the manufacturing frame is rotated for 120 degrees; removing the support plates mounted on the second sides of the upper and lower clamp blocks; lamination and bending of the upper yoke iron sheet, the lower yoke iron sheet are performed on the second side surfaces of the upper and lower clamp blocks (as shown in fig. 20);
S4, the positioning is released, the rotated manufacturing frame is rotated for 120 degrees again, and the manufacturing frame is positioned on the mounting frame again; removing the support plates mounted on the third sides of the upper and lower clamp blocks; and laminating and bending the upper iron yoke iron sheet, the lower iron yoke iron sheet on the third side surfaces of the upper clamping block and the lower clamping block.
Specifically, as shown in fig. 19, the support plate 9 is mounted on the second and third sides of the upper and lower clamping blocks, after the second arc plate 92 of the support plate 9 is tightly attached to the sides of the upper and lower clamping blocks (the arc radii of the two are identical), the threaded fastener 10 is used to pass through the mounting hole in the middle of the second arc plate 92, and then the support plate 9 is fastened on the upper and lower clamping blocks, thereby completing the mounting. In the disassembly, the threaded fastener 10 and the support plate 9 are disassembled together.
Therefore, by means of the supporting plate when the one-phase iron yoke iron sheet is subjected to bending operation, the third straight plate and the fourth straight plate of the supporting plate are utilized to support the two ends of the iron yoke iron sheet to be bent, and the two ends of the iron yoke iron sheet can be effectively prevented from being deformed in the bending process.
In contrast, the support plate structure of embodiment 2, as shown in fig. 21-23, is simpler and faster in bending operation than the separate arrangement of the upper and lower support plates.
Specifically, the lamination and bending of the upper iron yoke sheet and the lower iron yoke sheet comprise the following steps:
Connecting one end of the second connecting rod with one side surface of the upper clamping block; connecting one end of the third connecting rod with one side surface corresponding to the lower clamping block; (as shown in fig. 14);
sequentially stacking a plurality of upper iron yoke iron sheets on the side surface of an upper clamping block after passing through Kong Chuandi two connecting rods in the middle of the upper iron yoke iron sheets; a plurality of lower iron yoke iron sheets pass through the third connecting rod through holes in the middle of the lower iron yoke iron sheets and are sequentially stacked on the side surface of the lower clamping block;
The upper outer clamping plate penetrates through the second connecting rod, and nuts are sleeved on the second connecting rod and screwed up to bend the upper iron yoke iron sheet; and (3) enabling the lower outer clamping plate to pass through the third connecting rod, sleeving a nut on the third connecting rod, and screwing up the nut so as to bend the lower iron yoke iron sheet.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A manufacturing device of a transformer iron core comprises a manufacturing frame and a mounting frame for placing the manufacturing frame; the manufacturing frame comprises an upper clamping piece for clamping the upper iron yoke iron sheet, a lower clamping piece for clamping the lower iron yoke iron sheet, and a first connecting rod for connecting the upper clamping piece and the lower clamping piece; the method is characterized in that: an upper top plate and a lower top plate are respectively arranged at two ends of the first connecting rod, and are perpendicular to the first connecting rod; the upper clamping piece and the lower clamping piece are positioned between the upper top plate and the lower top plate; the distance between the upper top plate and the lower top plate is consistent with the height of the transformer iron core;
The mounting frame comprises a mounting seat and two brackets arranged at two ends of the mounting seat; the distance between the two brackets is smaller than the length of the first connecting rod and larger than the distance between the upper top plate and the lower top plate;
the manufacturing frame can rotate by taking the first connecting rod as a rotating shaft;
a positioning structure is arranged between the upper top plate and/or the lower top plate and the bracket;
The upper clamping piece comprises three upper outer clamping plates which are arranged at intervals in a Y shape, an upper clamping block arranged at the center of the three upper outer clamping plates and a second connecting rod; the shape of the upper clamping block is a triangular prism; the three upper outer clamping plates are respectively and correspondingly arranged with the three side surfaces of the upper clamping block one by one, and are respectively connected with the three side surfaces of the upper clamping block through the second connecting rods to clamp the upper iron yoke iron sheet between the upper outer clamping plates and the upper clamping block;
The lower clamping piece comprises three lower outer clamping plates which are arranged at intervals in a Y shape, lower clamping blocks arranged at the centers of the three lower outer clamping plates, and a third connecting rod; the shape of the lower clamping block is a triangular prism; the three lower outer clamping plates are respectively and correspondingly arranged with the three side surfaces of the lower clamping block one by one, and are respectively connected with the three side surfaces of the lower clamping block through the third connecting rods to clamp the lower iron yoke iron sheet between the lower outer clamping plate and the lower clamping block;
two ends of the first connecting rod are respectively connected with the upper clamping block and the lower clamping block; the upper outer clamping plate and the lower outer clamping plate are identical in shape and comprise a first straight plate, a first circular arc plate and a second straight plate which are sequentially connected, wherein an included angle between the first straight plate and the second straight plate is 120 degrees;
the three side surfaces of the upper clamping block and the lower clamping block are cambered surfaces; the cambered surface is concentric with the first circular arc plate, and the circular arc radius of the cambered surface Wherein R1 is the arc radius of the first arc plate, and D is the thickness of the transformer core;
The support plate comprises a third straight plate, a second circular arc plate and a fourth straight plate which are sequentially connected, and the included angle between the third straight plate and the fourth straight plate is 120 degrees; the arc radius of the second arc plate is consistent with the arc radius of the cambered surface; the middle part of the second arc plate is provided with a mounting hole; the support plate is provided with an upper support plate and a lower support plate which are arranged side by side at intervals, and two wings of the upper support plate are fixedly connected with two wings of the lower connection plate through a first connection plate and a second connection plate respectively.
2. The transformer core manufacturing apparatus according to claim 1, wherein: the two ends of the upper outer clamping plate are provided with first bolt holes; and second bolt holes are formed in the two ends of the lower outer clamping plate.
3. The manufacturing apparatus of a transformer core according to claim 1 or 2, characterized in that: the positioning structure comprises three first positioning holes uniformly formed in the upper top plate and/or the lower top plate, a second positioning hole formed in the mounting bracket, and positioning pins capable of penetrating through the first positioning holes and the second positioning holes.
4. A method of manufacturing a transformer core using the transformer core manufacturing apparatus of any one of claims 1 to 3, comprising the steps of:
S1, positioning a manufacturing frame on a mounting frame;
S2, mounting support plates on the second side surface and the third side surface of the upper clamping block and the lower clamping block; laminating and bending the upper iron yoke iron sheet and the lower iron yoke iron sheet on the first side surfaces of the upper clamping block and the lower clamping block;
S3, the positioning is released, and the manufacturing frame is positioned on the mounting frame again after the manufacturing frame is rotated for 120 degrees; removing the support plates mounted on the second sides of the upper and lower clamp blocks; laminating and bending the upper iron yoke iron sheet and the lower iron yoke iron sheet on the second side surfaces of the upper clamping block and the lower clamping block;
S4, the positioning is released, the rotated manufacturing frame is rotated for 120 degrees again, and the manufacturing frame is positioned on the mounting frame again; removing the support plates mounted on the third sides of the upper and lower clamp blocks; and laminating and bending the upper iron yoke iron sheet, the lower iron yoke iron sheet on the third side surfaces of the upper clamping block and the lower clamping block.
5. The method of manufacturing a transformer core according to claim 4, wherein the lamination and bending of the upper yoke iron sheet, the lower yoke iron sheet comprises the steps of:
Connecting the second connecting rod with one side of the upper clamping block, and connecting the third connecting rod with one side of the lower clamping block; one side surface of the upper clamping block and one side surface of the lower clamping block are on the same curved surface;
A plurality of upper iron yoke iron sheets pass through the second connecting rod through holes in the middle of the upper iron yoke iron sheets and then are sequentially stacked on one side surface of the upper clamping block; a plurality of lower iron yoke iron sheets pass through the third connecting rod through holes in the middle of the lower iron yoke iron sheets and then are sequentially stacked on one side surface of the lower clamping block;
The upper outer clamping plate penetrates through the second connecting rod, and nuts are sleeved on the second connecting rod and screwed up to bend the upper iron yoke iron sheet; and (3) enabling the lower outer clamping plate to pass through the third connecting rod, sleeving a nut on the third connecting rod, and screwing up the nut so as to bend the lower iron yoke iron sheet.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB667494A (en) * | 1949-03-26 | 1952-03-05 | British Thomson Houston Co Ltd | Improvements relating to clamps for electric transformer cores |
| CN205282245U (en) * | 2015-08-25 | 2016-06-01 | 襄阳九鼎新茂电气有限公司 | Many mounting meanss three -phase transformer |
| WO2016095126A1 (en) * | 2014-12-17 | 2016-06-23 | 特变电工股份有限公司 | Transformer for photovoltaic power generation |
| CN111223648A (en) * | 2020-03-10 | 2020-06-02 | 胡石林 | Folding three-phase transformer and manufacturing method thereof |
| CN210778175U (en) * | 2019-07-29 | 2020-06-16 | 海南金盘电气研究院有限公司 | Triangular roll iron core transformer |
| CN211507339U (en) * | 2020-01-20 | 2020-09-15 | 青岛中加特电气股份有限公司 | Three-dimensional iron core fixing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306541A (en) * | 2011-05-27 | 2012-01-04 | 广东海鸿变压器有限公司 | Resin-moulded dry-type transformer with three-dimensional noncrystalline alloy roll iron core |
| PL2767990T3 (en) * | 2013-02-18 | 2015-09-30 | Abb Technology Ag | Method for manufacturing a stacked triangular core transformer |
-
2021
- 2021-08-11 CN CN202110917959.1A patent/CN113628867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB667494A (en) * | 1949-03-26 | 1952-03-05 | British Thomson Houston Co Ltd | Improvements relating to clamps for electric transformer cores |
| WO2016095126A1 (en) * | 2014-12-17 | 2016-06-23 | 特变电工股份有限公司 | Transformer for photovoltaic power generation |
| CN205282245U (en) * | 2015-08-25 | 2016-06-01 | 襄阳九鼎新茂电气有限公司 | Many mounting meanss three -phase transformer |
| CN210778175U (en) * | 2019-07-29 | 2020-06-16 | 海南金盘电气研究院有限公司 | Triangular roll iron core transformer |
| CN211507339U (en) * | 2020-01-20 | 2020-09-15 | 青岛中加特电气股份有限公司 | Three-dimensional iron core fixing device |
| CN111223648A (en) * | 2020-03-10 | 2020-06-02 | 胡石林 | Folding three-phase transformer and manufacturing method thereof |
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