CN113470969B - Coil winding device of three-dimensional wound core distribution transformer - Google Patents
Coil winding device of three-dimensional wound core distribution transformer Download PDFInfo
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- CN113470969B CN113470969B CN202010235289.0A CN202010235289A CN113470969B CN 113470969 B CN113470969 B CN 113470969B CN 202010235289 A CN202010235289 A CN 202010235289A CN 113470969 B CN113470969 B CN 113470969B
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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
- H01F41/04—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 for manufacturing coils
- H01F41/06—Coil winding
- H01F41/098—Mandrels; Formers
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Abstract
The invention relates to the technical field of winding of distribution transformer coils, in particular to a winding device of a three-dimensional wound core distribution transformer coil. The wire winding machine comprises a wire winding plate and rotating assemblies connected to two ends of the wire winding plate, wherein each rotating assembly comprises a gear disc rotor and a gear disc stator which are rotatably connected, the gear disc rotor is connected with the wire winding plate, and the gear disc rotor is in transmission connection with an external winding machine; the gear disc stator is used for being connected with the iron core. The gear plate stator comprises a stator I and a stator II, one end of the stator I is hinged to one end of the stator II, and the other end of the stator I is connected with the other end of the stator II in an overlapping mode. The invention has convenient and quick assembly and disassembly, greatly saves the time for additionally assembling and disassembling the gear disc, and improves the winding efficiency to a certain extent.
Description
Technical Field
The invention relates to the technical field of winding of distribution transformer coils, in particular to a winding device of a three-dimensional wound core distribution transformer coil.
Background
The coil winding of the existing three-dimensional wound core product of the distribution transformer adopts a winding gear which comprises a gear baffle, a connecting ring, a track ring and a fixing ring, the axial and circumferential positioning functions of each part need to be pre-tightened by at least two groups of screws, a pair of winding gears needs to be assembled for each winding coil, and the assembly and disassembly are time-consuming and labor-consuming; meanwhile, a bolt pre-tightening mode is adopted between a fixing ring and an iron core of the conventional device, the pre-tightening method is in point contact with the iron core, the bolt needs to be tightened to achieve corresponding pre-tightening force, and the fixing method has certain damage to the mechanical stress and the electrical performance of the iron core.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a winding apparatus for a three-dimensional wound core distribution transformer, so as to solve the problems that the assembly and disassembly of the conventional winding apparatus are time-consuming and labor-consuming, and the mechanical stress and electrical performance of the core are damaged by the fixing method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coil winding device of a three-dimensional wound core distribution transformer comprises a winding plate and rotating assemblies connected to two ends of the winding plate, wherein each rotating assembly comprises a gear disc rotor and a gear disc stator which are rotatably connected, the winding plate is connected with the gear disc rotor, and the gear disc rotor is in transmission connection with an external winding machine; the gear disc stator is used for being connected with the iron core.
The gear plate stator comprises a stator I and a stator II, wherein the stator I is hinged with one end of the stator II, and the other end of the stator I is connected with the other end of the stator II in an overlapping mode.
The gear disc stator further comprises a locking adjusting mechanism, the locking adjusting mechanism comprises a petal wrench and petal inner teeth, and the petal inner teeth are arranged at the other end of the stator I; the petal spanner is positioned and connected to the other end of the stator II and is meshed with the petal inner teeth; the other end of the stator I is driven to rotate along the circumferential direction through a petal wrench.
The petal spanner comprises a spanner, petal outer teeth and a positioning column which are sequentially connected, the positioning column is used for being connected with the stator II in a positioning mode, and the petal outer teeth are used for being meshed with the petal inner teeth.
And a petal tooth baffle is arranged on the inner side of the other end of the stator II, and the petal tooth baffle is attached to the back surface of the petal inner teeth and used for guiding the other end of the stator I along the circumferential rotation.
The gear plate stator further comprises a sawtooth rubber pad, the stator I and the inner side of the stator II are respectively provided with a rubber pad mounting groove I and a rubber pad mounting groove II along the circumferential direction, and the sawtooth rubber pad is embedded in the rubber pad mounting groove I and the rubber pad mounting groove II.
The stator I and the outer side of the stator II are respectively provided with a stator oil duct I and a stator oil duct II along the circumferential direction.
The gear disc rotor comprises two semicircular gear discs which are connected through a connecting disc; the outer circumference of the semicircular gear disc is provided with gear teeth, and the inner circumference of the semicircular gear disc is provided with a wire winding plate bearing platform; a stator bearing platform I and a stator hoop I arranged on the outer side of the stator bearing platform I along the circumferential direction are arranged on the side face of the semicircular gear plate, and the gear plate stator is arranged on the inner side of the stator hoop I; and a rotor oil duct is arranged on the stator bearing platform I.
The gear plate stator is located between the connecting disc and the two semicircular gear plates, one side, corresponding to the gear plate stator, of the connecting disc is provided with a stator bearing platform II and a stator hoop II arranged on the outer side of the stator bearing platform II along the circumferential direction, and an oil duct is arranged on the stator bearing platform II.
The winding board is of a split structure and comprises a plurality of groups of winding board pieces which are sequentially connected along the circumferential direction.
The invention has the advantages and beneficial effects that:
1. the invention has convenient and quick disassembly, greatly saves the time for additionally installing and disassembling the gear disc, and improves the winding efficiency to a certain extent;
2. the invention can reduce the whole thickness of the gear disc by the way of matching the stator and the rotor, further reduce the design window height margin of the wound iron core, save the usage amount of the iron core, reduce the no-load loss, further reduce the height of the oil tank, reduce the usage amount of transformer oil and reduce the cost;
3. the sawtooth rubber pad arranged on the inner ring of the stator is in contact with the surface of the iron core, and the stator is completely fixed on the iron core through pre-tightening; the stator fixing mode has no damage to the iron core, and no hidden danger to the product quality is guaranteed.
Drawings
Fig. 1 is a schematic structural view of a coil winding device of a three-dimensional wound core distribution transformer according to the present invention;
FIG. 2 is a schematic structural view of a gear plate stator according to the present invention;
FIG. 3 is one of the structural diagrams of a stator I in the present invention;
FIG. 4 is a second schematic structural view of a stator I according to the present invention;
FIG. 5 is a schematic structural diagram of a stator II according to the present invention;
FIG. 6 is a schematic structural view of a petal wrench of the present invention;
FIG. 7 is a schematic structural view of a disk rotor according to the present invention;
FIG. 8 is a schematic structural view of a half-round gear plate according to the present invention;
FIG. 9 is a schematic structural view of a connecting disc according to the present invention;
fig. 10 is a schematic structural view of the winding plate of the present invention.
In the figure: 1 is a gear plate rotor, 101 is a semicircular gear plate, 1011 gear teeth, 1012 is a stator hoop I, 1013 is a stator bearing platform I, 1014 is a winding board bearing platform, 1015 is a rotor oil passage, 1016 is a bolt hole I, 102 is a connecting disc, 1021 bolt holes II, 1022 is a stator hoop II, 1023 is an oil passage, 1024 is a stator bearing platform II, 2 is a winding board, 201 is a winding sheet, 3 is a gear plate stator, 301 is a bolt, 302 is a petal wrench, 3021 is a wrench, 3022 is a petal outer tooth, 3023 is a positioning column, 303 is a stator I, 3031 is a pin hole I, 3032 is a rubber pad mounting groove I, 3033 is a petal inner tooth, 3034 is a stator oil passage I, 3035 is a positioning hole I, 304 is a stator II, 3041 is a stator oil passage II, 3042 is a rubber pad mounting groove II, 3043 is a pin hole II, 3044 is a positioning hole II, 3045 is a petal tooth baffle, 3046 is a petal wrench positioning hole, and 305 is a sawtooth rubber pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the coil winding device for a three-dimensional wound core distribution transformer provided by the invention comprises a winding plate 2 and rotating assemblies connected to two ends of the winding plate 2, wherein each rotating assembly comprises a gear disc rotor 1 and a gear disc stator 3 which are rotatably connected, the gear disc rotor 1 is connected with the winding plate 2, and the gear disc rotor 1 is in transmission connection with an external winding machine; the toothed disc stator 3 is intended to be connected to the core.
As shown in fig. 2, the gear plate stator 3 includes a stator i 303 and a stator ii 304, and one end of the stator i 303 and one end of the stator ii 304 are hinged, and the other ends are overlapped and connected by a bolt 301.
Further, as shown in fig. 2, the toothed disc stator 3 further comprises a locking adjusting mechanism, wherein the locking adjusting mechanism comprises a petal wrench 302 and petal inner teeth 3033, wherein the petal inner teeth 3033 are arranged at the other end of the stator i 303; the petal spanner 302 is positioned and connected to the other end of the stator II 304 and is meshed with the petal inner teeth 3033; the other end of the stator I303 is driven to rotate along the circumferential direction by the petal spanner 302.
In the embodiment of the invention, the gear disc stator 3 further comprises a sawtooth rubber pad 305, the sawtooth rubber pad 305 is arranged on the inner circumferences of the stator I303 and the stator II 304, when the iron core is tightly held, the sawtooth rubber pad 305 is flexibly attached to the iron core without mechanical damage, the attached part can provide large friction force for surface contact, the sawtooth rubber provides large friction coefficient, and quick pre-tightening positioning can be realized.
As shown in fig. 3-4, a stator oil duct i 3034 is arranged on the outer side of the stator i 303 along the circumferential direction, a rubber gasket mounting groove i 3032 is arranged on the inner circumference, and the sawtooth rubber gasket 305 is embedded in the rubber gasket mounting groove i 3032. One end of I303 of stator is equipped with pinhole I3031, and the other end is connecting portion I, and the thickness of connecting portion I is less than I303 of stator's body thickness, is equipped with petal internal tooth 3033 and a plurality of locating hole I3035 on this connecting portion I, and a plurality of locating hole I3035 are along circumference evenly distributed.
As shown in fig. 5, a stator oil passage ii 3041 is circumferentially provided on the outer side of the stator ii 304, a rubber pad installation groove ii 3042 is provided on the inner circumference, and the sawtooth rubber pad 305 is embedded in the rubber pad installation groove ii 3042. One end of the stator II 304 is provided with a pin hole II 3043, and the pin hole II 3043 is hinged with a pin hole I3031 at one end of the stator I303 through a pin shaft; the other end of stator II 304 is equipped with connecting portion II, and the thickness of this connecting portion II is lighter than the body thickness of stator II 304, is equipped with petal spanner locating hole 3046 and a plurality of locating hole II 3044 on the connecting portion II, and a plurality of locating holes II 3044 are along circumference evenly distributed. Connecting part I and connecting part II are overlapped, and positioning hole I3035 and positioning hole II 3044 are connected through bolt 301. The thickness of the stacked connection portions i and ii is the same as the thickness of the stator i 303 and ii 304, as shown in fig. 2.
The two ends of the stator I303 and the stator II 304 are jointed in a space staggered mode, the whole thickness of the joint is unchanged, one end of the joint is connected into a whole through a countersunk bolt, the joint is fastened on the surface of an iron core in a fan-shaped opening and closing mode, and the other end of the joint is pre-tightened and fixed by a petal wrench 302. Overall structure is succinct, gets to take the convenience, and it is convenient to assemble and dismantle.
Further, as shown in fig. 5, a petal tooth baffle 3045 is provided inside the connecting portion ii at the other end of the stator ii 304, and the petal tooth baffle 3045 is attached to the back surface of the petal inner teeth 3033 to guide the other end of the stator i 303 to rotate in the circumferential direction.
As shown in fig. 6, a petal wrench 302 is used as a pretensioning aid. The petal wrench 302 comprises a wrench 3021, petal outer teeth 3022 and a positioning column 3023 which are connected in sequence, the positioning column 3023 is used for being connected with a petal wrench positioning hole 3046 on the stator II 304 in a positioning mode, and the petal outer teeth 3022 are used for being meshed with the petal inner teeth 3033. The gear disc stator 3 is pre-tightened by a pair of petal type meshing modes, a positioning column 3023 of a petal wrench 302 is inserted into a petal wrench positioning hole 3046, petal outer teeth 3022 are meshed with petal inner teeth 3033, a rotary wrench 3021 is pre-tightened, and a countersunk head positioning bolt 301 is inserted and screwed after pre-tightening is suitable. The pre-tightening mode of the scheme is novel, the operation is convenient and fast, and the pre-tightening effect is obvious.
The toothed disc stator 3 serves to be fixed to the core and carries the toothed disc rotor 1. In the embodiment of the invention, the gear disc stator 3 is designed into a whole and is overlapped by a scheme of space staggering two ends of a stator I303 and a stator II 304, the opening angle of the stator I303 is 195 degrees, the opening angle of the stator II 304 is 180 degrees, and one end of the stator I304 is fixed by a countersunk bolt, so that the opening and closing actions can be realized; the other end of the lap joint is pre-tightened by meshing the petal outer teeth 3022 and the petal inner teeth 3033 of the petal wrench 302; the gear disc stators 3 are fixed with the iron core by tightly adhering sawtooth rubber pads 305 on the surface of the iron core, and are pre-tightened and fixed by a petal wrench 302, and the inner ring of each gear disc stator 3 is provided with 120-degree rubber pad grooves for placing the sawtooth rubber pads 305. The gear plate stator 3 is attached to the iron core through the two sawtooth rubber pads 305, the rubber is flexibly attached to the iron core without mechanical damage, the attaching position is in surface contact with the iron core and can provide large friction force, the sawtooth rubber provides large friction coefficient, and quick pre-tightening positioning can be achieved.
As shown in fig. 7, the gear plate rotor 1 includes a connecting plate 102 and two semicircular gear plates 101, the two semicircular gear plates 101 are connected through the connecting plate 102, and the gear plate stator 3 is disposed between the two semicircular gear plates 101 and the connecting plate 102 and can rotate relatively.
As shown in fig. 8, the outer circumference of the semicircular gear plate 101 is provided with gear teeth 1011, and the inner circumference is provided with a wire winding plate bearing platform 1014; the side of the semicircular gear disc 101 is provided with a stator bearing platform I1013 and a stator hoop I1012 arranged outside the stator bearing platform I1013 along the circumferential direction, and the gear disc stator 3 is arranged inside the stator hoop I1012; and a rotor oil passage 1015 is arranged on the stator bearing platform I1013.
As shown in fig. 9, one side of the connection disc 102 corresponding to the gear disc stator 3 is provided with a stator bearing platform ii 1024 and a stator hoop ii 1022 disposed outside the stator bearing platform ii 1024 along the circumferential direction, the stator bearing platform ii 1024 is provided with an oil passage 1023, and two sides of the gear disc stator 3 are in contact with the stator bearing platform i 1013 and the stator bearing platform ii 1024.
During installation, two semicircle toothed disc 101 docks, aligns the bolt hole with connection pad 102 face to face simultaneously, and two bolts of installation are tightened behind the toothed disc stator 3 are embraced to stator staple bolt I1012 and the stator staple bolt II 1022. Gear plate rotor 1 embraces gear plate stator 3, and five degrees of freedom of restriction gear plate rotor 1 only remain gear plate rotor 1 around 3 rotatory degrees of freedom of gear plate stator, and the operation is stable, installation and dismantlement convenient and fast, and the gear atress is even, saves the window height space unshakable in one's determination.
As shown in fig. 10, the winding plate 2 includes a plurality of winding plate pieces 201 connected in series in the circumferential direction. In the embodiment of the invention, the winding plate 2 is composed of three winding plate pieces 201, each winding plate piece 201 is of an arc structure, the central angle a of the winding plate piece is 120 degrees, three winding plate pieces 201 are required to be installed for each winding to form a cylinder, the winding plate pieces 201 are in left-right lap joint on a winding plate bearing platform 1014 on one side of the semi-circular gear disc 101, the formed winding cylinder is tightly attached to the left gear disc and the right gear disc, and the winding cylinder rotates together with the gear disc stator 3 to realize the winding function.
The pre-tightening of the gear disc stator 3 is realized by meshing the petal spanner 302 with the petal inner teeth 3033, and the pre-tightening is positioned by a positioning bolt; the gear plate rotor 1 is formed by connecting two semicircular gear plates 101 through a connecting disc 102, the gear plate rotor 1 embraces a gear plate stator 3 in a male-female matched mode through the connecting disc 102, and the gear plate rotor 1 rotates on the gear plate stator 3 to achieve a winding function. The gear plate stator 3 and the gear plate rotor 1 are matched with each other in a male-female mode, so that the occupied space is small, the uniform operation is reliable, the assembly and the disassembly are convenient and rapid, the iron core is not damaged by the fixing mode of the gear plate stator 3, and the quite large friction force is provided, and the stability is good.
The invention is matched with a winding machine for use, and the fixed gear of the winding machine and the gear disc rotor 1 are engaged with each other to wind the coil. A gear disc stator 3 is fixed on an iron core in a mode of being pre-tightened by a petal wrench 302 and positioned by a bolt, a bearing platform is arranged on one side of a gear disc rotor 1 to be matched with a male gear and a female gear of the gear disc stator 3, the gear disc rotor 1 is connected and fastened on the gear disc stator 3 through a connecting disc 102, two groups of gear discs clamp a wire winding plate 2, the wire winding plate 2 rotates along with the rotor, the gear disc rotor 1 is externally meshed with gear teeth of a wire winding machine and winds along with the rotation of the gear.
The gear disc adopts a design scheme that the rotor tightly holds the stator and the rotor rotates around the stator, so that the scheme can greatly save the occupied space. At present, the window height of the wound iron core is reserved with a margin of 15mm, namely, each group of winding devices consists of two pairs of gear discs, and the whole margin occupying window height reaches 30mm. The rotor of the scheme tightly holds the stator, the design thickness unilateral is 12.5mm, the thickness of two sides is 25mm, the window height margin is reduced by 5mm compared with the existing gear disc, 4kg can be saved by calculating the weight of an iron core of a 400kVA iron-rolling transformer, and the no-load loss is reduced by 3W.
In the embodiment of the invention, the winding gear disc can complete the complete fixation of the rotor and the stator only by screwing four countersunk head bolts, and the original working time is saved by at least more than 60%. Meanwhile, compared with the conventional gear plate, the gear plate has the advantages that the material consumption is greatly reduced, and the manufacturing cost of the gear plate is also greatly reduced. The stator is fixed in a rubber flexible contact mode, so that the stator has large friction force and good stability, does not damage an iron core, and avoids the quality problem caused by the subsequent use of the transformer.
The invention has the characteristics of compact structure, convenient and quick assembly and disassembly and small occupied space, changes the fixing mode from point contact to surface contact, and can greatly improve the winding efficiency and reduce the manufacturing cost of the iron core.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (8)
1. The winding device for the coil of the three-dimensional wound core distribution transformer is characterized by comprising a winding plate (2) and rotating assemblies connected to two ends of the winding plate (2), wherein each rotating assembly comprises a gear disc rotor (1) and a gear disc stator (3) which are rotatably connected, the winding plate (2) is connected with the gear disc rotor (1), and the gear disc rotor (1) is in transmission connection with an external winding machine; the gear disc stator (3) is used for being connected with the iron core;
the gear disc stator (3) comprises a stator I (303) and a stator II (304), one end of the stator I (303) is hinged with one end of the stator II (304), and the other end of the stator I (303) is connected with the other end of the stator II (304) in an overlapping mode;
the gear disc stator (3) further comprises a locking adjusting mechanism, the locking adjusting mechanism comprises a petal spanner (302) and petal inner teeth (3033), wherein the petal inner teeth (3033) are arranged at the other end of the stator I (303); the petal spanner (302) is positioned and connected to the other end of the stator II (304) and is meshed with the petal inner teeth (3033); the other end of the stator I (303) is driven to rotate along the circumferential direction through a petal wrench (302).
2. The winding device of the stereoscopic wound core distribution transformer coil as claimed in claim 1, wherein the petal wrench (302) comprises a wrench (3021), external petal teeth (3022) and a positioning column (3023) connected in sequence, the positioning column (3023) is used for positioning and connecting with the stator ii (304), and the external petal teeth (3022) are used for meshing with the internal petal teeth (3033).
3. The winding device of the coil of the three-dimensional wound core distribution transformer of claim 2, wherein a petal tooth baffle (3045) is arranged on the inner side of the other end of the stator II (304), and the petal tooth baffle (3045) is attached to the back of the petal inner teeth (3033) and used for guiding the other end of the stator I (303) to rotate along the circumferential direction.
4. The winding device of the coil of the three-dimensional wound core distribution transformer according to claim 1, wherein the gear disc stator (3) further comprises a sawtooth rubber pad (305), the inner sides of the stator I (303) and the stator II (304) are respectively provided with a rubber pad installation groove I (3032) and a rubber pad installation groove II (3042) along the circumferential direction, and the sawtooth rubber pad (305) is embedded in the rubber pad installation groove I (3032) and the rubber pad installation groove II (3042).
5. The apparatus for winding a three-dimensional wound core distribution transformer coil according to claim 1, wherein a stator oil passage i (3034) and a stator oil passage ii (3041) are respectively formed at outer sides of the stator i (303) and the stator ii (304) along a circumferential direction.
6. The apparatus for winding a coil of a stereoscopic wound core distribution transformer according to claim 1, characterized in that the gear disc rotor (1) comprises two semi-circular gear discs (101), the two semi-circular gear discs (101) being connected by a connection disc (102); the outer circumference of the semicircular gear disc (101) is provided with gear teeth (1011), and the inner circumference is provided with a winding plate bearing platform (1014); the side face of the semicircular gear plate (101) is provided with a stator bearing platform I (1013) and a stator hoop I (1012) which is arranged on the outer side of the stator bearing platform I (1013) along the circumferential direction, and the gear plate stator (3) is arranged on the inner side of the stator hoop I (1012); and a rotor oil duct (1015) is arranged on the stator bearing platform I (1013).
7. The winding device of the coil of the stereoscopic wound core distribution transformer according to claim 6, wherein the gear plate stator (3) is located between the connection plate (102) and the two semicircular gear plates (101), one side of the connection plate (102) corresponding to the gear plate stator (3) is provided with a stator bearing platform II (1024) and a stator hoop II (1022) arranged outside the stator bearing platform II (1024) along the circumferential direction, and the stator bearing platform II (1024) is provided with an oil passage (1023).
8. The apparatus for winding a three-dimensional wound core distribution transformer coil according to claim 1, wherein the winding plate (2) has a split structure comprising a plurality of winding plates connected in series along a circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010235289.0A CN113470969B (en) | 2020-03-30 | 2020-03-30 | Coil winding device of three-dimensional wound core distribution transformer |
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| CN202010235289.0A CN113470969B (en) | 2020-03-30 | 2020-03-30 | Coil winding device of three-dimensional wound core distribution transformer |
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| CN113470969A CN113470969A (en) | 2021-10-01 |
| CN113470969B true CN113470969B (en) | 2023-03-07 |
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| CN115798918A (en) * | 2023-02-13 | 2023-03-14 | 山东巨力电工设备有限公司 | Binding head of vertical iron core binding machine |
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