A press for pressing a winding coil

Abstract

The utility model relates to a kind of press for pressing winding coil, including workbench and heightening stand, the top of workbench is provided with the hydraulic assembly of downwardly exerting pressure, heightening stand is between workbench and hydraulic assembly;Heightening stand includes mesa and support column, the lower surface of mesa is provided with several reinforcing plates, the top of support column is connected with mesa, the bottom of support column is provided with support seat, support seat is in contact with workbench, the utility model can solve the technical problem that present technology cannot satisfy the pressing needs of winding coil of different specifications.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology, and specifically relates to a press for pressing winding coils. Background Technology

[0002] The three basic components of a transformer are the core, the winding coils, and the cooler. The winding coils are not only the conductive circuit of the transformer but also its heart. Newly wound winding coils can exhibit significant dimensional differences along their axial direction due to different winding methods and operating techniques. To ensure consistent axial dimensions for coils of the same specification, the traditional method is manual loading using upper and lower pressure plates, four corner tie rods, and nuts. This method has the following drawbacks: 1. Manual loading is time-consuming, labor-intensive, and inefficient; 2. Uneven coil stress; uneven stress can easily damage the winding insulation and lead to transformer damage; 3. The coil pressing force is difficult to control and cannot be monitored. Insufficient pressing force creates a large air gap, leading to eddy current losses, magnetic leakage, and transformer overheating; excessive pressing force may damage the wire insulation and deform the windings. Currently, advanced domestic companies typically use dedicated hydraulic presses instead of manual pressing. However, dedicated coil presses have poor versatility when pressing coils of different sizes due to their short lifting stroke. Utility Model Content

[0003] In view of the various shortcomings of the existing technology, a press and coil press for pressing winding coils are proposed to solve the technical problem that the existing technology cannot meet the pressing requirements of winding coils of different specifications.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A press for pressing winding coils includes a worktable and an extension frame, wherein a hydraulic assembly for applying downward pressure is disposed above the worktable, and the extension frame is located between the worktable and the hydraulic assembly;

[0006] The riser includes a platform and a support column. The lower surface of the platform is provided with several reinforcing plates. The top of the support column is connected to the platform, and the bottom of the support column is provided with a support base, which is in contact with the workbench.

[0007] The technical solution is further configured such that the plurality of reinforcing plates are arranged in a crisscross pattern.

[0008] The technical solution is further configured such that the support base is sleeved around the support column, the support column has a positioning cavity inside, and the worktable has a positioning block that can be embedded in the positioning cavity.

[0009] The technical solution is further configured such that the workbench has an internal cavity, the cavity is provided with a telescopic element, and the positioning block is connected to the movable end of the telescopic element;

[0010] In the initial state, the top surface of the positioning block is flush with the upper surface of the worktable; in the working state, after the raising frame is placed above the worktable, the telescopic element pushes the positioning block upward, so that the top surface of the positioning block protrudes from the upper surface of the worktable and is embedded in the positioning cavity.

[0011] The technical solution is further configured such that the hydraulic assembly includes a hydraulic cylinder, a top plate, and a pressure plate. The cylinder body end of the hydraulic cylinder is connected to the top plate, the push rod of the hydraulic cylinder passes through the top plate and is connected to the pressure plate, and the pressure plate is positioned facing the worktable.

[0012] The technical solution is further configured to include several columns, which are disposed on the side of the workbench, with the top of the columns connected to the top plate, and the columns slidably connected to the pressure plate.

[0013] The technical solution is further configured such that a safety fence is provided above the top plate, and a ladder is provided on the side of the top plate.

[0014] The technical solution is further configured such that the workbench is equipped with casters with built-in braking function.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting up an extension frame to shorten the distance between the worktable and the pressure plate, it is suitable for pressing small-diameter winding coils. When pressing large-diameter winding coils, the extension frame can be removed to improve the versatility of the press.

[0017] 2. When the positioning block moves up relative to the worktable, it limits the heightening frame to prevent displacement during coil pressing. When the positioning block moves down relative to the worktable, the top surface of the positioning block is flush with the upper surface of the worktable to ensure the flatness of the upper surface of the worktable and avoid affecting the pressing of the winding coil. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a press used for pressing winding coils in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the riser frame in an embodiment of this utility model;

[0020] Figure 3 This is a top view of the workbench in an embodiment of this utility model;

[0021] Figure 4 yes Figure 3 Sectional view of AA.

[0022] In the attached diagram: 100, workbench; 200, hydraulic assembly; 201, top plate; 202, pressure plate; 300, extension frame; 301, tabletop; 302, support column; 303, support base; 304, reinforcing plate; 400, safety fence; 500, column; 600, casters; 700, positioning block; 800, telescopic element. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0024] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0025] According to an embodiment of this utility model, a press for pressing winding coils is provided. Please refer to [link to relevant documentation]. Figures 1 to 4 It includes a workbench 100 and a riser 300. A hydraulic assembly 200 that applies downward pressure is disposed above the workbench 100, and the riser 300 is located between the workbench 100 and the hydraulic assembly 200.

[0026] In use, large-diameter winding coils can be placed directly above the worktable 100 and pressed by the hydraulic assembly 200 applying downward pressure. To prevent the lifting stroke of the hydraulic assembly 200 from being limited, small-diameter winding coils can be placed above the extension frame 300 and then pressed using the hydraulic assembly 200. In other words, by setting up the extension frame 300 to shorten the distance between the worktable 100 and the pressure plate of the hydraulic assembly 200, it is suitable for pressing small-diameter winding coils. When pressing large-diameter winding coils, the extension frame 300 can be removed, improving the versatility of the press.

[0027] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The riser 300 includes a tabletop 301 and a support column 302. The lower surface of the tabletop 301 is provided with a plurality of reinforcing plates 304. The top of the support column 302 is connected to the tabletop 301, and the bottom of the support column 302 is provided with a support base 303. The support base 303 is in contact with the workbench 100.

[0028] Furthermore, four support columns 302 are provided, and the four support columns 302 together support the platform 301. Adjacent support columns 302 are connected by connecting columns to improve stability.

[0029] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The reinforcing plates 304 are arranged in a crisscross pattern. This design allows for a more uniform distribution of stress over a larger area, reducing localized stress concentration and contributing to enhanced overall stability and load-bearing capacity.

[0030] Furthermore, the interlaced reinforcing plates 304 create clearance spaces, providing installation space for the support column 302.

[0031] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The support base 303 is sleeved around the support column 302, the support column 302 has a positioning cavity inside, and the worktable 100 is provided with a positioning block 700 that can be embedded in the positioning cavity.

[0032] Furthermore, the support base 303 is sleeved around the support column 302, which increases the contact area between the support column 302 and the worktable 100, reducing the risk of deformation or damage caused by excessive local pressure on the worktable 100.

[0033] Furthermore, the shape of the positioning block 700 is adapted to the shape of the positioning cavity, and the positioning block 700 is embedded in the positioning cavity to limit the heightening frame 300.

[0034] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The workbench 100 has an internal cavity for receiving, and the cavity is equipped with a telescopic element 800. The positioning block 700 is connected to the movable end of the telescopic element 800.

[0035] Furthermore, the movable end of the telescopic element 800 extends and retracts in the vertical direction to drive the positioning block 700 to move up and down. Preferably, the telescopic element 800 is a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, etc.

[0036] Furthermore, the upper surface of the worktable 100 is provided with an opening, and the positioning block 700 is disposed inside the opening. At the same time, the bottom of the positioning block 700 extends away from its body to form a limiting wing, so as to limit the extreme position of the upward movement of the positioning block 700.

[0037] In the initial state, the top surface of the positioning block 700 is flush with the upper surface of the worktable 100. At this time, it can be used to press large-diameter winding coils. In the working state, after the riser 300 is placed above the worktable 100, the telescopic element 800 pushes the positioning block 700 upward, so that the top surface of the positioning block 700 protrudes from the upper surface of the worktable 100 and is embedded in the positioning cavity, thereby positioning the riser 300. At this time, it can be used to press small-diameter winding coils.

[0038] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The hydraulic assembly 200 includes a hydraulic cylinder, a top plate 201, and a pressure plate 202. The cylinder body of the hydraulic cylinder is connected to the top plate 201, and the push rod of the hydraulic cylinder passes through the top plate 201 and is connected to the pressure plate 202. The pressure plate 202 is positioned directly opposite the worktable 100.

[0039] Furthermore, the top plate 201 is configured as a box structure, and the hydraulic cylinder is located inside the box structure.

[0040] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 It also includes several columns 500, which are disposed on the side of the workbench 100. The top of the column 500 is connected to the top plate 201, and the column 500 is slidably connected to the pressure plate 202.

[0041] Furthermore, there are four columns 500, which are located at the corners of the workbench 100. The pressure plate 202 is slidably connected to the columns 500 through a guide sleeve.

[0042] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 A safety railing 400 is installed above the top plate 201, which provides a physical barrier for workers at heights and prevents accidental falls. Meanwhile, ladders are installed on the sides of the top plate 201, facilitating routine inspection and maintenance.

[0043] For an example of a press used to press a winding coil in this embodiment, please refer to [link to relevant documentation]. Figures 1 to 4 The workbench 100 is equipped with casters 600 with built-in brakes for easy movement.

[0044] Furthermore, in order to prevent the worktable 100 from colliding with surrounding objects during movement, the longitudinal section of the worktable 100 is set as a T-shaped structure, that is, its top edge extends to the outside of the bottom edge. At the same time, a reinforcing rib is provided between the top edge and the bottom edge to improve stability.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0047] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0048] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A press for pressing winding coils, characterized in that, It includes a workbench and a lifter frame, with a hydraulic assembly that applies downward pressure above the workbench and the lifter frame located between the workbench and the hydraulic assembly; The riser includes a platform and a support column. The lower surface of the platform is provided with several reinforcing plates. The top of the support column is connected to the platform, and the bottom of the support column is provided with a support base, which is in contact with the workbench.

2. The press for pressing winding coils according to claim 1, characterized in that, The reinforcing plates are arranged in a crisscross pattern.

3. The press for pressing winding coils according to claim 1, characterized in that, The support base is sleeved around the support column, the support column has a positioning cavity inside, and the worktable has a positioning block that can be embedded in the positioning cavity.

4. The press for pressing winding coils according to claim 3, characterized in that, The workbench has an internal cavity, which is equipped with a telescopic element. The positioning block is connected to the movable end of the telescopic element. In the initial state, the top surface of the positioning block is flush with the upper surface of the worktable; in the working state, after the raising frame is placed above the worktable, the telescopic element pushes the positioning block upward, so that the top surface of the positioning block protrudes from the upper surface of the worktable and is embedded in the positioning cavity.

5. The press for pressing winding coils according to claim 1, characterized in that, The hydraulic assembly includes a hydraulic cylinder, a top plate, and a pressure plate. The cylinder body of the hydraulic cylinder is connected to the top plate, and the push rod of the hydraulic cylinder passes through the top plate and is connected to the pressure plate. The pressure plate is positioned directly opposite the worktable.

6. The press for pressing winding coils according to claim 5, characterized in that, It also includes several columns, which are disposed on the side of the workbench, with the top of the columns connected to the top plate, and the columns slidably connected to the pressure plate.

7. The press for pressing winding coils according to claim 5 or 6, characterized in that, A safety fence is installed above the top plate, and a ladder is installed on the side of the top plate.

8. The press for pressing winding coils according to claim 1, characterized in that, The workbench is equipped with casters with built-in brakes.

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