Transformer core stacking device

Abstract

The present invention discloses a transformer core stacking device, comprising: a horizontal supporting frame equipped with a plurality of supporting legs, a lifting plate, four groups of first positioning units, all of which are assembled on the lifting plate and can respectively contact the four outer side walls of the iron core sheet, and four groups of second positioning units, all of which are assembled on the lifting plate and can respectively contact the inner side walls of the iron core sheet. The first positioning unit includes a pair of bent first positioning members that can move close to the edge of the iron core sheet and respectively contact the two ends of the side wall of the iron core sheet. The second positioning unit includes three bent second positioning members that can be dispersed to respectively contact the three inner side walls adjacent to the iron core sheet. When stacking, the first positioning member and the second positioning member will both move close to the corresponding side walls of the iron core sheet, thereby adjusting the position of the iron core sheet to prevent the iron core sheet from being skewed. Through the auxiliary device, the accuracy of the iron core sheet stacking can be improved, and the work efficiency can also be improved without manual position adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field related to transformers, and in particular to a transformer core stacking device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are a primary coil, a secondary coil, and an iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization.

[0003] A 35kV oil-immersed transformer primarily consists of an iron core, high- and low-voltage coils, high- and low-voltage outlet bushings, a tap changer, an oil tank, an oil conservator, and other accessories. The iron core and high- and low-voltage coils are the core components of the transformer and primarily responsible for voltage conversion. The iron core and coils are immersed in insulating oil, while the oil conservator is used to replenish the oil level in the tank. The tap changer adjusts the voltage to match the grid voltage. Other safety devices include an oil drain valve, thermometer, pressure relief valve, and gas relay.

[0004] The core is typically composed of several stacked cold-rolled silicon steel sheets, generally including a center column, an upper yoke, a lower yoke, and two side columns. Currently, the market includes two types of cores: constant-width cores and variable-width cores. Variable-width cores are designed in which the width of the core varies at different heights. By adjusting the width at different heights, variable-width cores optimize the magnetic circuit, thereby improving magnetic flux utilization. This effectively reduces core losses and improves transformer efficiency. Variable-width cores are typically used in large-capacity transformers, where their optimization effects are more significant.

[0005] Since the laminations are mostly stacked manually, and the width of the laminations at different heights is different for variable width laminations, manual adjustment of the position of the laminations when the width changes will not only increase the difficulty of lamination stacking, resulting in low work efficiency, but also low precision in lamination stacking. Therefore, it is necessary to design a transformer core stacking device. Summary of the Invention

[0006] In view of the above technical problems, the present invention aims to overcome the problems of low efficiency and low stacking precision of variable width cores in the prior art.

[0007] To achieve the above-mentioned object, the present invention provides a transformer core stacking device, comprising: a horizontal support frame equipped with a plurality of support legs, a lifting plate vertically slidably mounted on the plurality of support legs and located below the support frame, four sets of first positioning units each mounted on the lifting plate and capable of respectively contacting four outer side walls of the core sheet, and four sets of second positioning units each mounted on the lifting plate and capable of respectively contacting the inner side walls of the core sheet.

[0008] The first positioning unit includes a pair of bent first positioning members that can move close to the edge of the iron core sheet and respectively contact the two ends of the side wall of the iron core sheet. The second positioning unit includes three bent second positioning members that can be dispersed to respectively contact the three inner side walls adjacent to the iron core sheet.

[0009] Preferably, a plurality of positioning blocks for positioning the supporting base are fixedly mounted on the supporting frame.

[0010] Preferably, the second positioning member in contact with the middle column includes a lower positioning member fixedly mounted on the lifting plate and capable of contacting the lower portion of the side wall of the middle column, and an upper positioning member capable of moving close to the middle column to contact the upper portion of the middle column, the lower positioning member being fixedly connected to a horizontal first mounting plate, and the upper positioning member being horizontally slidably mounted on the first mounting plate.

[0011] Preferably, the second positioning unit further comprises a horizontal double-threaded rod axially connected to the first mounting plate, a threaded rod axially connected to the first mounting plate and having a length direction perpendicular to the length direction of the double-threaded rod, and a motor mounted on the first mounting plate and having an output shaft drivingly connected to the double-threaded rod via a pair of meshing first bevel teeth, the threaded rod being drivingly connected to the double-threaded rod via a pair of meshing second bevel teeth, and the upper positioning member being threadedly sleeved on one end of the double-threaded rod;

[0012] One of the second positioning members is slidably connected to the first mounting plate along the axis direction of the double-threaded rod, and is threadedly sleeved on the end of the double-threaded rod away from the upper positioning member;

[0013] Another second positioning member is slidably connected to the first mounting plate along the axial direction of the threaded rod and is threadably sleeved on the end of the threaded rod.

[0014] Preferably, several of the supporting feet are fixedly equipped with a second mounting plate located below the lifting plate, and the lifting plate is fixedly equipped with several vertical guide arms that slide vertically downward through the second mounting plate, and the second mounting plate is equipped with a first driving push rod whose moving end is connected to the lifting plate.

[0015] Preferably, the first positioning unit further comprises a connecting frame fixedly connected to the two first positioning members and a horizontal second driving push rod assembled on the lifting plate through a mounting frame and with a movable end fixedly connected to the connecting frame, and the connecting frame is horizontally slidably connected to the lifting plate.

[0016] Preferably, the top of the lower positioning member is protruded with a vertical extension portion that is higher than the bottom of the upper positioning member.

[0017] Preferably, the bottoms of the second mounting plate and the lifting plate are both provided with a plurality of reinforcing ribs.

[0018] According to the above technical solution, the present invention provides a transformer core stacking device, which has the following beneficial technical effects compared with the prior art:

[0019] When stacking the iron chips, each time one or several layers are placed, the first positioning member and the second positioning member will move close to the corresponding side wall of the iron chip, thereby adjusting the position of the iron chip to prevent the iron chip from tilting; after the adjustment is completed, the first positioning member and the second positioning member will move away from the iron chip and separate from the corresponding side wall of the iron chip, and then continue to place the iron chip. Through this device, the accuracy of stacking the iron chips can be improved, and the work efficiency can also be improved without manual position adjustment.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation methods; and the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the use of a transformer core stacking device provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a transformer core stacking device provided by the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the second positioning unit of the transformer core stacking device provided by the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of a first positioning unit of a transformer core stacking device provided by the present invention;

[0026] Figure 5 It is a partial three-dimensional structural schematic diagram of a transformer core stacking device provided by the present invention.

[0027] Description of Reference Numerals

[0028] 1. Support foot; 2. Support frame; 3. Lifting plate; 4. First positioning unit; 5. Second positioning unit; 6. First positioning member; 7. Second positioning member; 8. Positioning block; 9. Lower positioning member; 10. Upper positioning member; 11. First mounting plate; 12. Double-headed threaded rod; 13. Threaded rod; 14. First bevel gear; 15. Motor; 16. Second bevel gear; 17. Second mounting plate; 18. Guide arm; 19. First driving push rod; 20. Connecting frame; 21. Mounting frame; 22. Second driving push rod; 23. Extension part. DETAILED DESCRIPTION

[0029] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0030] In the present invention, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0031] like Figure 1-5 As shown, a transformer core stacking device includes: a horizontal support frame 2 equipped with a plurality of support legs 1, a lifting plate 3 vertically slidably mounted on the plurality of support legs 1 and located below the support frame 2, four sets of first positioning units 4 each mounted on the lifting plate 3 and capable of respectively contacting the four outer side walls of the core sheet, and four sets of second positioning units 5 each mounted on the lifting plate 3 and capable of respectively contacting the inner side walls of the core sheet;

[0032] The first positioning unit 4 includes a pair of bent first positioning members 6 that can move close to the edge of the iron core sheet and respectively contact the two ends of the side wall of the iron core sheet. The second positioning unit 5 includes three bent second positioning members 7 that can be dispersed to respectively contact the three inner side walls adjacent to the iron core sheet.

[0033] In the above technical solution, the first positioning members 6 in the four groups of first positioning units 4 respectively contact the outer side walls of the two side columns and the two yoke pieces, and the three second positioning members 7 in each group of second positioning units 5 can respectively contact the inner side walls of the side columns, the middle columns and one of the yoke pieces.

[0034] During stacking, each time one or several layers are placed, the first positioning member 6 and the second positioning member 7 will move close to the corresponding side wall of the iron chip, thereby adjusting the position of the iron chip to prevent the iron chip from tilting; after the adjustment is completed, the first positioning member 6 and the second positioning member 7 will move away from the iron chip and separate from the corresponding side wall of the iron chip, and then continue to place the iron chip. Through this device, the accuracy of iron chip stacking can be improved, and the work efficiency can also be improved without manual position adjustment.

[0035] When stacking iron chips, the support base must first be placed on the support frame 2, and then the iron chips are stacked on the support base. The function of the support base is to facilitate the removal of the stacked iron chips from the support frame 2 after the stacking of the iron chips is completed.

[0036] In a preferred embodiment of the invention, a plurality of positioning blocks 8 for positioning the supporting chassis are fixedly mounted on the supporting frame 2 .

[0037] In the above technical solution, the positioning block 8 is conducive to quickly positioning the support frame and can also prevent sliding during the stacking of the iron core sheets.

[0038] In a preferred embodiment of the invention, the second positioning member 7 in contact with the middle column includes a lower positioning member 9 fixedly mounted on the lifting plate 3 and capable of contacting the lower portion of the side wall of the middle column, and an upper positioning member 10 capable of moving close to the middle column to contact the upper portion of the middle column, the lower positioning member 9 being fixedly connected to a horizontal first mounting plate 11, and the upper positioning member 10 being horizontally slidably mounted on the first mounting plate 11.

[0039] In the above technical solution, since the middle column of the iron core piece can avoid the supporting frame 2, the lower positioning member 9 can be moved directly upward to facilitate the placement of the iron core piece. After the iron core piece is placed, the lower positioning member 9 can also be moved directly downward to separate from the stacked iron core piece; the upper positioning member 10 can position the iron core piece on the upper part of the iron core.

[0040] In a preferred embodiment of the invention, the second positioning unit 5 further includes a horizontal double-threaded rod 12 axially connected to the first mounting plate 11, a threaded rod 13 axially connected to the first mounting plate 11 and having a length direction perpendicular to the length direction of the double-threaded rod 12, and a motor 15 assembled on the first mounting plate 11 and having an output shaft transmission-connected to the double-threaded rod 12 via a pair of meshing first bevel teeth 14, the threaded rod 13 transmission-connected to the double-threaded rod 12 via a pair of meshing second bevel teeth 16, and the upper positioning member 10 is threadedly sleeved on one end of the double-threaded rod 12;

[0041] One of the second positioning members 7 is slidably connected to the first mounting plate 11 along the axial direction of the double-threaded rod 12, and is threadedly sleeved on the end of the double-threaded rod 12 away from the upper positioning member 10;

[0042] Another second positioning member 7 is slidably connected to the first mounting plate 11 along the axial direction of the threaded rod 13 , and is threadably sleeved on the end of the threaded rod 13 .

[0043] In the above technical solution, after the iron core piece is placed, the motor 15 starts and drives the double-headed threaded rod 12 to rotate through a pair of first bevel teeth 14. The double-headed threaded rod 12 will drive one of the second positioning members 7 and the upper positioning member 10 to move close to the inner wall of the iron core piece to adjust the position of the placed iron core piece; the double-headed threaded rod 12 will also drive the threaded rod 13 to rotate through a pair of second bevel teeth 16, thereby driving the corresponding second positioning member 7 to move close to the inner wall of the iron core piece to adjust the position of the iron core piece; after the position adjustment of the iron core piece is completed, the motor 15 will drive the double-headed threaded rod 12 and the threaded rod 13 to rotate in the opposite direction, thereby driving the second positioning member 7 and the upper positioning member 10 to return to their original position, so as to continue to place the iron core piece.

[0044] In a preferred embodiment of the invention, several of the supporting feet 1 are fixedly equipped with a second mounting plate 17 located below the lifting plate 3, and the lifting plate 3 is fixedly equipped with several vertical guide arms 18 that slide vertically downward through the second mounting plate 17, and the second mounting plate 17 is equipped with a first driving push rod 19 whose moving end is connected to the lifting plate 3.

[0045] In the above technical solution, the moving end of the first driving push rod 19 drives the lifting plate 3 to move vertically, and the function of the guide arm 18 is to improve the stability of the lifting plate 3 when it is lifted or lowered.

[0046] In a preferred embodiment of the invention, the first positioning unit 4 also includes a connecting frame 20 fixedly connected to the two first positioning members 6 and a horizontal second driving push rod 22 assembled on the lifting plate 3 through a mounting frame 21 and with a movable end fixedly connected to the connecting frame 20, and the connecting frame 20 is horizontally slidably connected to the lifting plate 3.

[0047] In the above technical solution, the moving end of the second driving push rod 22 drives the connecting frame 20 to move horizontally, thereby driving the first positioning member 6 to move closer to or away from the outer side wall of the iron core sheet.

[0048] In a preferred embodiment of the present invention, a vertical extension portion 23 is protruded from the top of the lower positioning member 9 and is higher than the bottom of the upper positioning member 10 .

[0049] In the above technical solution, the extension portion 23 can avoid the problem that the core piece cannot be positioned at the junction of the upper positioning member 10 and the lower positioning member 9 .

[0050] In a preferred embodiment of the invention, the bottoms of the second mounting plate 17 and the lifting plate 3 are both provided with a plurality of reinforcing ribs.

[0051] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0053] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A transformer core stacking device, characterized in that: include: A horizontal support frame (2) equipped with a plurality of support legs (1), a lifting plate (3) vertically slidably mounted on the plurality of support legs (1) and located below the support frame (2), four groups of first positioning units (4) each mounted on the lifting plate (3) and capable of respectively contacting four outer side walls of the iron core sheet, and four groups of second positioning units (5) each mounted on the lifting plate (3) and capable of respectively contacting the inner side walls of the iron core sheet; The first positioning unit (4) comprises a pair of bent first positioning members (6) that can move close to the edge of the iron core sheet and respectively contact the two ends of the side wall of the iron core sheet, and the second positioning unit (5) comprises three bent second positioning members (7) that can be dispersed to respectively contact the three inner side walls adjacent to the iron core sheet; The second positioning member (7) in contact with the middle column comprises a lower positioning member (9) fixedly mounted on the lifting plate (3) and capable of contacting the lower portion of the side wall of the middle column, and an upper positioning member (10) capable of moving closer to the middle column to contact the upper portion of the middle column, wherein the lower positioning member (9) is fixedly connected to a horizontal first mounting plate (11), and the upper positioning member (10) is horizontally slidably mounted on the first mounting plate (11); The second positioning unit (5) further includes a horizontal double-threaded rod (12) axially connected to the first mounting plate (11), a threaded rod (13) axially connected to the first mounting plate (11) and having a length direction perpendicular to the length direction of the double-threaded rod (12), and a motor (15) assembled on the first mounting plate (11) and having an output shaft transmission-connected to the double-threaded rod (12) via a pair of meshing first bevel teeth (14), the threaded rod (13) transmission-connected to the double-threaded rod (12) via a pair of meshing second bevel teeth (16), and the upper positioning member (10) is threadedly sleeved on one end of the double-threaded rod (12); One of the second positioning members (7) is slidably connected to the first mounting plate (11) along the axial direction of the double-threaded rod (12), and is threadedly sleeved on the end of the double-threaded rod (12) away from the upper positioning member (10); Another second positioning member (7) is slidably connected to the first mounting plate (11) along the axial direction of the threaded rod (13), and is threadably sleeved on the end of the threaded rod (13).

2. The transformer core stacking device according to claim 1, characterized in that: A plurality of positioning blocks (8) for positioning the supporting base frame are fixedly mounted on the supporting frame (2).

3. The transformer core stacking device according to claim 1, characterized in that: A second mounting plate (17) located below the lifting plate (3) is fixedly mounted on a plurality of the supporting legs (1), a plurality of vertical guide arms (18) vertically sliding downward and passing through the second mounting plate (17) are fixedly mounted on the lifting plate (3), and a first driving push rod (19) whose movable end is connected to the lifting plate (3) is mounted on the second mounting plate (17).

4. The transformer core stacking device according to claim 1, characterized in that: The first positioning unit (4) further comprises a connecting frame (20) fixedly connected to the two first positioning members (6) and a horizontal second driving push rod (22) assembled on the lifting plate (3) via a mounting frame (21) and having a movable end fixedly connected to the connecting frame (20); the connecting frame (20) is horizontally slidably connected to the lifting plate (3).

5. The transformer core stacking device according to claim 1, characterized in that: The top of the lower positioning member (9) is protruded with a vertical extension portion (23) that is higher than the bottom of the upper positioning member (10).

6. The transformer core stacking device according to claim 3, characterized in that: The bottoms of the second mounting plate (17) and the lifting plate (3) are both provided with a plurality of reinforcing ribs.

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