Transformer iron core stacking device

Abstract

The invention discloses a transformer iron core stacking device. Comprising a horizontal supporting frame provided with a plurality of supporting legs, a lifting plate, four sets of first positioning units which are all assembled on the lifting plate and can be in contact with the four outer side walls of an iron chip respectively, and four sets of second positioning units which are all assembled on the lifting plate and can be in contact with the inner side walls of the iron chip respectively. The first positioning unit comprises a pair of bent first positioning pieces which can move close to the edge of the iron core piece and make contact with the two ends of the side wall of the iron core piece respectively, and the second positioning unit comprises three bent second positioning pieces which can be dispersed to make contact with the three adjacent inner side walls of the iron core piece respectively. The first positioning piece and the second positioning piece can move close to the corresponding side walls of the iron core pieces, so that the positions of the iron core pieces are adjusted, the iron core pieces are prevented from inclining, through the auxiliary device, the iron core piece stacking precision can be improved, the working efficiency can be improved, and manual position adjustment is not needed.

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 the primary coil, secondary coil and iron core. Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc.

[0003] 35kV oil-immersed transformer is mainly composed of iron core, high and low voltage coils, high and low voltage outlet bushings, tap changer, oil tank, oil storage cabinet and other accessories. Among them, the iron core and high and low voltage coils are the core components of the transformer and the main components for realizing voltage conversion. The iron core and coils are immersed in insulating oil, and the oil storage cabinet oil is used to replenish the oil level in the oil tank. The tap changer can adjust the voltage to adapt to the grid voltage. Other safety devices include oil drain valve, thermometer, pressure relief valve, gas relay and so on.

[0004] The core is usually composed of several stacked cold-rolled silicon steel sheets, generally including an intermediate column, an upper yoke sheet, a lower yoke sheet and two side columns. There are two types of cores on the market: equal-width core and variable-width core. Variable-width core refers to a design in which the width of the core varies at different heights. The variable-width core can optimize the magnetic circuit by adjusting the width at different heights, thereby improving the utilization rate of the magnetic flux. The variable-width core can effectively reduce the core loss and improve the efficiency of the transformer. The variable-width core is usually used for large-capacity transformers because in this case, its optimization effect is more significant.

[0005] Since the work of stacking core sheets is mostly done manually, and the width of the variable-width core is different at different heights, when the width changes, the position of the core sheets has to be adjusted manually, which not only increases the difficulty of stacking the core sheets, resulting in low work efficiency, but also low precision in stacking the core sheets. Therefore, it is necessary to design a transformer core stacking device. Summary of the invention

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

[0007] In order 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 groups 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 groups 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 frame 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 closer 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 is drivingly connected to the double-threaded rod via a pair of meshing second bevel teeth, and the upper positioning member is 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 with 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, a second mounting plate located below the lifting plate is fixedly mounted on several of the supporting feet, a plurality of vertical guide arms that vertically slide downward through the second mounting plate are fixedly mounted on the lifting plate, and a first driving push rod whose moving end is connected to the lifting plate is mounted on the second mounting 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 via a mounting frame and with a movable end fixedly connected to the connecting frame, wherein the connecting frame is horizontally slidably connected to the lifting plate.

[0016] Preferably, the top of the lower positioning member is protruded to be provided with a vertical extension portion which 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, so as to adjust the position of the iron chip and 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 chips. 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 mode; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. 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 specific embodiments, 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 It is a schematic diagram of the use of a transformer core stacking device provided by the present invention;

[0023] Figure 2 It is a three-dimensional structural schematic diagram 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 a second positioning unit of a transformer core stacking device provided by the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram 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 piece; 7. Second positioning piece; 8. Positioning block; 9. Lower positioning piece; 10. Upper positioning piece; 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 specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used 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 comprises: 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 all mounted on the lifting plate 3 and capable of respectively contacting four outer side walls of the core sheet, and four groups of second positioning units 5 all 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 scheme, the first positioning members 6 in the four groups of first positioning units 4 respectively contact the outer side walls of two side columns and 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] When 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, so as to adjust the position of the iron chip and 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 stacking accuracy of the iron chips can be improved, and the work efficiency can also be improved without manual position adjustment.

[0035] When stacking the iron chips, the support base must be placed on the support frame 2 first, 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 iron chips are stacked.

[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 the rapid positioning of the supporting 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 closer 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 piece 9 can be directly moved upward to facilitate the placement of the iron core piece. After the iron core piece is placed, the lower positioning piece 9 can also be directly moved downward to separate from the stacked iron core piece; the upper positioning piece 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 comprises 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 mounted 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 scheme, after placing the iron core sheet, the motor 15 is started to drive the double-headed threaded rod 12 to rotate through a pair of first bevel teeth 14, and 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 side wall of the iron core sheet to adjust the position of the placed iron core sheet; 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 side wall of the iron core sheet to adjust the position of the iron core sheet; after the position adjustment of the iron core sheet 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 sheet.

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

[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 core sheet.

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

[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, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope 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 suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0053] In addition, 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 an iron core sheet, and four groups of second positioning units (5) each mounted on the lifting plate (3) and capable of respectively contacting an inner side wall of an 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.

2. A 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: 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 part 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 part 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).

4. A transformer core stacking device according to claim 3, characterized in that: The second positioning unit (5) further comprises 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) mounted 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).

5. 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 feet (1); a plurality of vertical guide arms (18) vertically sliding downward through the second mounting plate (17) are fixedly mounted on the lifting plate (3); and a first driving push rod (19) whose moving end is connected to the lifting plate (3) is mounted on the second mounting plate (17).

6. 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) which is assembled on the lifting plate (3) via a mounting frame (21) and whose movable end is fixedly connected to the connecting frame (20); the connecting frame (20) is horizontally slidably connected to the lifting plate (3).

7. The transformer core stacking device according to claim 3, characterized in that: The top of the lower positioning member (9) is protruded to be provided with a vertical extension portion (23) that is higher than the bottom of the upper positioning member (10).

8. The transformer core stacking device according to claim 5, 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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