Pressing equipment for transformer coil
By designing a hydraulic cylinder-driven pressing equipment, the problems of high investment cost, inconvenient operation, and difficult maintenance of pressing equipment in the existing technology are solved, and more efficient operation and smoother force application are achieved.
Patent Information
- Application Number
- CN202420972737.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-07
AI Technical Summary
In the prior art, equipment used for transformer coil pressing, such as four-column presses and single-cylinder pull-down pressing plates, has problems such as high investment costs, inconvenient operation, and difficult maintenance.
A pressing equipment including a pulling shaft, a lower pressure plate, an upper top plate, an upper pressure plate and multiple hydraulic cylinders is designed. The hydraulic cylinder is installed on the upper top plate. Driven by the hydraulic cylinder, the upper pressure plate can move toward or away from the lower pressure plate, thereby suppressing the transformer coil.
By arranging the hydraulic cylinder on the upper top plate, the actual pressing area on the lower pressure plate is saved, thereby increasing the space for placing the transformer coil, improving operating efficiency, making the structure more stable and the force application more balanced.
Smart Images
Figure CN222380422U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a voltage-stressing device, and more particularly to a voltage-stressing device for a transformer coil. Background Art
[0002] In today's transformer factories, in order to control the height of the transformer coil and ensure the transformer reactance value, it is necessary to apply a calculated pressure to the end of the transformer coil in advance. The pressure equipment generally used in transformer factories is a four-column press. The use of a four-column press has a large investment cost, inconvenient coil operation, and high maintenance costs.
[0003] Another common method is to use a single-cylinder pull-down pressure plate for pressure. With a single-cylinder pull-down pressure plate, the diameter of the pressure cylinder in the middle is generally more than 600 mm, which occupies the actual use area of the pressure, and is inconvenient and difficult to maintain. Utility Model Content
[0004] In order to overcome the above-mentioned defects existing in the prior art, the present disclosure provides a pressing device for a transformer coil, the pressing device comprising: a pulling shaft, the pulling shaft extending in a vertical direction and having a top end and a bottom end opposite to each other; a lower pressing plate, the lower pressing plate resting on a placement surface, the transformer coil being placed on the lower pressing plate, and the bottom end of the pulling shaft being centrally fixed to the lower pressing plate; an upper top plate, the upper top plate being located above the lower pressing plate and spaced apart from the lower pressing plate, the upper top plate being fixed to the pulling shaft, and a central through hole being provided at the center of the upper top plate for The top end of the pulling shaft is made to pass through the upper plate via the central through hole; an upper pressing plate, the upper pressing plate is arranged between the upper plate and the lower pressing plate, and a central opening is arranged at the center of the upper pressing plate so that the pulling shaft passes through the upper pressing plate via the central opening; and a plurality of hydraulic cylinders, the hydraulic cylinders include a cylinder body and a piston rod that can reciprocate in a vertical direction relative to the cylinder body, the cylinder body is fixed on the upper plate, and the piston rod is fixed to the upper pressing plate, so that the upper pressing plate can be driven by the plurality of hydraulic cylinders to move toward or away from the lower pressing plate. In the present disclosure, by arranging the hydraulic cylinders on the upper plate, it is possible to save the occupation of the actual use area of the pressing on the lower pressing plate, so that there is more space for placing the transformer coil, so as to improve the operating efficiency.
[0005] Furthermore, the upper pressing plate and the lower pressing plate have shapes corresponding to the winding shapes of the transformer coil, thereby being able to better adapt to the pressure on the transformer coil.
[0006] Furthermore, the upper pressing plate and the lower pressing plate are both in the shape of a disc. Accordingly, the structure of the pressing device disclosed in the present invention is more stable and the force is more balanced.
[0007] Further, the upper plate has a disc shape, and the plurality of hydraulic cylinders are arranged on a virtual circle with the center of the upper plate as the center and are equally spaced from each other in the circumferential direction. Accordingly, the capacity of a single hydraulic cylinder can be reduced while achieving good weight distribution on the upper plate.
[0008] Furthermore, the hydraulic cylinder is arranged adjacent to the outer periphery of the upper top plate. Accordingly, the weight distribution of the hydraulic cylinder on the upper top plate is more even, so that the force application is more balanced.
[0009] Furthermore, the pressing device further includes an upper top plate reinforcement member fixed on the top surface of the upper top plate, and the upper top plate reinforcement member includes: a plurality of first annular reinforcement plates, the plurality of first annular reinforcement plates are concentrically arranged relative to the extension axis of the pull shaft; and a plurality of first radial reinforcement plates, the plurality of first radial reinforcement plates are connected to the plurality of first annular reinforcement plates in a radial direction. Accordingly, the structure of the upper top plate can be made more stable to stably support the hydraulic cylinder.
[0010] Furthermore, the pressing device further includes an upper top plate lower reinforcement member fixed on the bottom surface of the upper top plate, and the upper top plate lower reinforcement member includes: a plurality of second annular reinforcement plates, the plurality of second annular reinforcement plates are concentrically arranged relative to the extension axis of the pull shaft; and a plurality of second radial reinforcement plates, the plurality of second radial reinforcement plates are connected to the plurality of second annular reinforcement plates in a radial direction. Accordingly, the stability of the upper top plate can be further enhanced.
[0011] Furthermore, the pressing device further comprises an upper platen reinforcement member fixed on the top surface of the upper platen, the upper platen reinforcement member comprising: a plurality of third annular reinforcement plates, the plurality of third annular reinforcement plates being arranged concentrically with respect to the extension axis of the pull shaft; and a plurality of third radial reinforcement plates, the plurality of third radial reinforcement plates connecting the plurality of third annular reinforcement plates in a radial direction. Accordingly, the stability of the upper platen can be enhanced.
[0012] Furthermore, the pressing device further comprises a plurality of pads fixed on the top surface of the upper pressing plate, the number of the pads being the same as the number of the hydraulic cylinders, and the piston rod of each hydraulic cylinder being fixed on a corresponding pad. Accordingly, it is possible to avoid direct contact between the upper pressing plate and the upper top plate when the piston rod of the hydraulic cylinder is retracted, so as to maintain the stability of the upper pressing plate and the upper top plate.
[0013] Furthermore, one of the cushion blocks is disposed between two circumferentially adjacent third radial reinforcement plates among the plurality of third radial reinforcement plates. Accordingly, the space on the upper pressure plate can be efficiently utilized and the structural stability can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the accompanying drawings:
[0015] Figure 1 is a schematic side cross-sectional view showing a pressing device of the present disclosure;
[0016] Figure 2 is a schematic side sectional view showing the pressing device of the present disclosure, wherein the piston rod of the hydraulic cylinder extends downward so that the upper pressing plate moves toward the lower pressing plate;
[0017] Figure 3 is a schematic side cross-sectional view showing a portion of the striking device of the present disclosure;
[0018] Figure 4 It shows Figure 3 A schematic top view of a portion of the strikeout apparatus shown;
[0019] Figure 5 is a schematic side cross-sectional view showing another portion of the striking device of the present disclosure; and
[0020] Figure 6 It shows Figure 5 A schematic top view of another part of the stamping device is shown.
[0021] Reference numerals list
[0022] 100 Suppression equipment
[0023] 1 Pull shaft
[0024] 11 Top
[0025] 12 Bottom
[0026] 2 Lower pressure plate
[0027] 3 Upper top plate
[0028] 31 Center through hole
[0029] 4 Upper pressure plate
[0030] 41 Center opening
[0031] 5 Hydraulic cylinder
[0032] 51 Cylinder
[0033] 52 Piston rod
[0034] 6 Upper top plate reinforcement
[0035] 61 First annular reinforcement plate
[0036] 62 First radial reinforcement plate
[0037] 7 Upper top plate lower reinforcement
[0038] 71 Second annular reinforcement plate
[0039] 72 Second radial reinforcement plate
[0040] 8 Upper pressure plate reinforcement
[0041] 81 Third annular reinforcement plate
[0042] 82 Third radial reinforcement plate
[0043] 9. Pad DETAILED DESCRIPTION
[0044] The following will be combined with the drawings in the embodiments of the present disclosure to describe the technical solutions in the embodiments of the present disclosure in detail. It should be noted that the embodiments and features in the embodiments of the present disclosure can be combined with each other without conflict. The nouns and pronouns about people in this patent disclosure are not limited to specific genders.
[0045] In the following detailed description, reference is made to the accompanying drawings that form a part of this specification, in which specific embodiments in which the present disclosure may be implemented are shown by way of example. With respect to the accompanying drawings, directional terms such as "top", "bottom", "inside", "outside", "up", "down", "front", "back", etc. are used with reference to the direction of the accompanying drawings being described. Since the components of the embodiments of the present disclosure may be placed in many different directions, the directional terms are used for illustration only and are not intended to be limiting. It should be understood that other embodiments may be used and that structural or logical changes may be made without departing from the scope of the present disclosure. Therefore, the following detailed description should not be construed in a limiting sense, and the present disclosure is defined by the appended claims.
[0046] With reference to the accompanying drawings, the present disclosure proposes a pressing device 100 for a transformer coil. The pressing device 100 may generally include a pulling shaft 1, a lower pressing plate 2, an upper top plate 3, an upper pressing plate 4, and a plurality of hydraulic cylinders 5. The pulling shaft 1 extends in a vertical direction and has a top end 11 and a bottom end 12 opposite to each other. The lower pressing plate 2 is placed on a placement surface (e.g., the ground or a workbench). The transformer coil may be placed on the lower pressing plate 2, and in particular, a plurality of transformer coils may be placed on the lower pressing plate 2 around the pulling shaft 1. The bottom end 12 of the pulling shaft 1 may be centrally fixed to the lower pressing plate 2. The upper top plate 3 is located above the lower pressing plate 2 and is spaced apart from the lower pressing plate 2. The upper top plate 3 is fixed to the pulling shaft 1, for example, the pulling shaft 1 may be fixed to the upper top plate 3 by a sleeve sleeved on the pulling shaft 1. A central through hole 31 is provided at the center of the upper top plate 3 so that the top end 11 of the pulling shaft 1 passes through the upper top plate 3 via the central through hole, such as Figure 1 and Figure 2 As shown, the upper top plate 3 can be fixed on the pull shaft 1 at a position close to its top end 11. The upper pressing plate 4 is arranged between the upper top plate 3 and the lower pressing plate 2, and a central opening 41 is arranged at the center of the upper pressing plate 4 so that the pull shaft 1 passes through the upper pressing plate 4 via the central opening 41. The hydraulic cylinder 5 may include a cylinder body 51 and a piston rod 52 that can reciprocate in a vertical direction relative to the cylinder body 51. The cylinder body 51 is fixed on the upper top plate 3, and the piston rod 52 is fixed to the upper pressing plate 4, so that the upper pressing plate 4 can be driven by a plurality of hydraulic cylinders 5 to move toward or away from the lower pressing plate 2, thereby achieving the pressing of the transformer coil. In particular, the cylinder body 51 can be fixed on the top surface of the upper top plate 3, and the piston rod 52 passes through the corresponding through holes arranged on the upper top plate 3 (a plurality of through holes are arranged on the upper top plate 3, the number of through holes is the same as the number of hydraulic cylinders, and each piston rod passes through a corresponding through hole) and is fixed to the upper pressing plate 4, of course, the present disclosure is not limited thereto.
[0047] Accordingly, by arranging the hydraulic cylinder 5 on the upper top plate, the occupation of the actual use area of the pressing on the lower pressing plate can be saved, so that there is more space for placing the transformer coil, so as to improve the operating efficiency.
[0048] In addition, the upper pressing plate 4 and the lower pressing plate 2 may have a shape corresponding to the winding shape of the transformer coil. In particular, the lower pressing plate 2, the upper top plate 3 and / or the upper pressing plate 4 may have a disc shape. Of course, the shapes of the lower pressing plate 2, the upper top plate 3 and the upper pressing plate 4 are not limited thereto, and it is preferred as long as they have a centrally symmetrical shape. In the case where both the upper pressing plate 4 and the lower pressing plate 2 have a disc shape, the diameters of the upper pressing plate 4 and the lower pressing plate 2 may be equal to each other.
[0049] In particular, in the case where the upper plate 3 has a disc shape, the plurality of hydraulic cylinders 5 may be arranged on a virtual circle having the center of the upper plate 3 as the center and spaced equally from each other in the circumferential direction. Figure 3 As best shown, the pressing device 100 may include six hydraulic cylinders 5, for example, six 50T pressing cylinders.
[0050] Preferably, if Figure 3 As best shown, the hydraulic cylinder 5 may be disposed adjacent to the outer periphery of the upper roof plate 3 , but the present disclosure is not limited thereto.
[0051] In addition, the pressing device 100 may further include an upper top plate upper reinforcement member 6 fixed on the top surface of the upper top plate 3. The upper top plate upper reinforcement member 6 may include a plurality of first annular reinforcement plates 61 and a plurality of first radial reinforcement plates 62. The plurality of first annular reinforcement plates 61 are concentrically arranged relative to the extension axis of the pull shaft 1, and the plurality of first radial reinforcement plates 62 connect the plurality of first annular reinforcement plates 61 in the radial direction.
[0052] In addition, the pressing device 100 may further include an upper top plate lower reinforcement member 7 fixed to the bottom surface of the upper top plate 3. The upper top plate lower reinforcement member 7 may include a plurality of second annular reinforcement plates 71 and a plurality of second radial reinforcement plates 72. The plurality of second annular reinforcement plates 71 are concentrically arranged relative to the extension axis of the pull shaft 1, and the plurality of second radial reinforcement plates 72 connect the plurality of second annular reinforcement plates 71 in the radial direction.
[0053] In addition, the pressing device 100 may further include an upper platen reinforcement 8 fixed on the top surface of the upper platen 4. The upper platen reinforcement 8 may include a plurality of third annular reinforcement plates 81 and a plurality of third radial reinforcement plates 82. The plurality of third annular reinforcement plates 81 are concentrically arranged relative to the extension axis of the pull shaft 1, and the plurality of third radial reinforcement plates 82 connect the plurality of third annular reinforcement plates 81 in the radial direction.
[0054] In particular, the pressing device 100 may further include a plurality of pads 9 fixed on the top surface of the upper pressing plate 4. The number of the pads 9 is the same as the number of the hydraulic cylinders 5, and the piston rod 52 of each hydraulic cylinder 5 is fixed on a corresponding pad 9. Further, a pad 9 is provided between two circumferentially adjacent third radial reinforcing plates 82 among the plurality of third radial reinforcing plates 82.
[0055] Compared with the existing single-cylinder pull-down platen (wherein a single 200T hydraulic cylinder is arranged at the center of the lower platen, and the upper platen is driven to move up and down by a telescopic rod arranged above), the pressing device 100 disclosed in the present invention evenly arranges, for example, six hydraulic cylinders of the same model on the upper platen 3, so as to replace the single 200T hydraulic cylinder located below (i.e., on the lower platen) with six 50T pressure cylinders located above (i.e., on the upper platen). This can save costs and space, while increasing the space utilization of the lower platen. Moreover, by arranging the annular reinforcing plate 61 and the first radial reinforcing plate 62, the structural strength of the upper platen 3 can be enhanced, and a process lifting hole can also be arranged at an appropriate position on the first radial reinforcing plate 62 to facilitate lifting and transportation.
[0056] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A voltage-pressing device for transformer coils, characterized in that: The pressing device (100) comprises: A pull shaft (1), the pull shaft (1) extending in a vertical direction and having a top end (11) and a bottom end (12) opposite to each other; A lower pressing plate (2), the lower pressing plate (2) being placed on a placement surface, the transformer coil being placed on the lower pressing plate (2), and the bottom end (12) of the pulling shaft (1) being centrally fixed to the lower pressing plate (2); an upper top plate (3), the upper top plate (3) being located above the lower pressing plate (2) and spaced apart from the lower pressing plate (2), the upper top plate (3) being fixed to the pulling shaft (1), and a central through hole (31) being provided at the center of the upper top plate (3) so that the top end (11) of the pulling shaft (1) can pass through the upper top plate (3) via the central through hole; an upper pressing plate (4), the upper pressing plate (4) being arranged between the upper top plate (3) and the lower pressing plate (2), and a central opening (41) being arranged at the center of the upper pressing plate (4) so that the pulling shaft (1) can pass through the upper pressing plate (4) via the central opening (41); and A plurality of hydraulic cylinders (5), each of which comprises a cylinder body (51) and a piston rod (52) capable of reciprocating in a vertical direction relative to the cylinder body (51), the cylinder body (51) being fixed on the upper top plate (3), and the piston rod (52) being fixed to the upper pressing plate (4), so that the upper pressing plate (4) can be moved toward or away from the lower pressing plate (2) by being driven by the plurality of hydraulic cylinders (5). The pressing device (100) further comprises an upper top plate reinforcement member (6) fixed on the top surface of the upper top plate (3), and the upper top plate reinforcement member (6) comprises: a plurality of first annular reinforcement plates (61), the plurality of first annular reinforcement plates (61) being arranged concentrically relative to an extension axis of the pulling shaft (1); and A plurality of first radial reinforcement plates (62), wherein the plurality of first radial reinforcement plates (62) are connected to the plurality of first annular reinforcement plates (61) along a radial direction.
2. The voltage-pressing device for transformer coil according to claim 1, characterized in that: The upper pressing plate (4) and the lower pressing plate (2) have shapes corresponding to the winding shapes of the transformer coil.
3. The voltage-pressing device for transformer coil according to claim 2, characterized in that: The upper pressing plate (4) and the lower pressing plate (2) both have a disc shape.
4. The voltage-pressing device for transformer coil according to claim 3, characterized in that: The upper top plate (3) has a disc shape, and the plurality of hydraulic cylinders (5) are arranged on a virtual circle with the center of the upper top plate (3) as the center and are spaced apart from each other at equal intervals in the circumferential direction.
5. The voltage-pressing device for transformer coil according to claim 4, characterized in that: The hydraulic cylinder (5) is arranged adjacent to the outer periphery of the upper top plate (3).
6. The voltage-stressing device for transformer coil according to any one of claims 1 to 5, characterized in that: The pressing device (100) further comprises an upper top plate lower reinforcement member (7) fixed to the bottom surface of the upper top plate (3), wherein the upper top plate lower reinforcement member (7) comprises: a plurality of second annular reinforcing plates (71), the plurality of second annular reinforcing plates (71) being arranged concentrically relative to an extension axis of the pulling shaft (1); and A plurality of second radial reinforcement plates (72), wherein the plurality of second radial reinforcement plates (72) are connected to the plurality of second annular reinforcement plates (71) along a radial direction.
7. The pressing device for transformer coil according to any one of claims 1 to 5, characterized in that: The pressing device (100) further comprises an upper pressing plate reinforcement member (8) fixed on the top surface of the upper pressing plate (4), wherein the upper pressing plate reinforcement member (8) comprises: a plurality of third annular reinforcement plates (81), the plurality of third annular reinforcement plates (81) being arranged concentrically relative to the extension axis of the pulling shaft (1); and A plurality of third radial reinforcement plates (82), wherein the plurality of third radial reinforcement plates (82) are connected to the plurality of third annular reinforcement plates (81) along a radial direction.
8. The voltage-stressing device for transformer coil according to any one of claims 1 to 5, characterized in that: The pressing device (100) further comprises a plurality of cushion blocks (9) fixed on the top surface of the upper pressing plate (4), the number of the cushion blocks (9) being the same as the number of the hydraulic cylinders (5), and the piston rod (52) of each hydraulic cylinder (5) being fixed on a corresponding one of the cushion blocks (9).
9. The voltage-stressing device for transformer coil according to any one of claims 1 to 5, characterized in that: The pressing device (100) further comprises: An upper pressing plate reinforcement member (8) fixed on the top surface of the upper pressing plate (4), the upper pressing plate reinforcement member (8) comprising: a plurality of third annular reinforcement plates (81), the plurality of third annular reinforcement plates (81) being arranged concentrically relative to the extension axis of the pulling shaft (1); and a plurality of third radial reinforcement plates (82), the plurality of third radial reinforcement plates (82) connecting the plurality of third annular reinforcement plates (81) in a radial direction, and A plurality of pads (9) are fixed on the top surface of the upper pressure plate (4), the number of the pads (9) being the same as the number of the hydraulic cylinders (5), and the piston rod (52) of each hydraulic cylinder (5) being fixed on a corresponding one of the pads (9), wherein one pad (9) is provided between two circumferentially adjacent third radial reinforcement plates (82) among the plurality of third radial reinforcement plates (82).