Novel adjustable tooth profile high-strength pull plate structure
By designing a novel adjustable toothed high-strength tie plate structure, the problem of the inability to adjust the height of the perforated tie plate structure for transformers has been solved, achieving convenient adjustment and high-strength connection, improving the safety of transformer hoisting and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAODING TIANWEI BAOBIAN ELECTRICAL
- Filing Date
- 2026-04-07
- Publication Date
- 2026-07-31
AI Technical Summary
The existing perforated pull plate structure of transformers cannot adjust the height, resulting in insufficient mechanical strength, which cannot meet the heavy load requirements of large transformers, and also presents assembly difficulties.
A novel adjustable toothed high-strength tension plate structure is designed. By interlocking and fixing the first toothed steel plate and the second toothed steel plate, and connecting them with fasteners, the height can be adjusted, the contact area can be increased, the stress distribution can be dispersed, and the mechanical strength can be improved.
This design enables convenient adjustment and high-strength connection of the pull plate structure, avoids assembly jamming, improves the safety of transformer hoisting, and reduces maintenance costs.
Smart Images
Figure CN122494409A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of transformer technology, specifically relating to a novel adjustable tooth profile high-strength tension plate structure. Background Technology
[0002] Transformer core tie plates are a crucial component of the core. During the lifting of large transformer bodies, they directly bear the weight of the entire transformer body, consisting of the core, windings, and auxiliary components. Their mechanical strength and reliability directly determine the safety of the lifting operation, making them a key element in transformer structural design. The currently prevalent perforated tie plate structure requires coordination with lifting shafts pre-welded to clamps.
[0003] However, once the lifting shaft is welded, its height is fixed and cannot be adjusted according to actual assembly conditions. Sometimes, this can even lead to difficulties in assembling the pull plate. As transformer capacity increases, the weight of the transformer body becomes heavier. The structure of the pull plate and the lifting shaft has limitations in mechanical strength and the inability to adjust its height, which cannot meet current requirements. Summary of the Invention
[0004] The purpose of this invention is to provide a novel adjustable toothed high-strength tension plate structure with a simple structure and reasonable design in order to solve the above problems.
[0005] The present invention achieves the above objectives through the following technical solutions: A novel adjustable toothed high-strength pull plate structure includes an upper clamp, a lower clamp, a first toothed steel plate, a second toothed steel plate, and a pull-connecting steel plate. The two ends of the pull-connecting steel plate are respectively fixedly connected to the second toothed steel plate. The first toothed steel plates are arranged in pairs, with one first toothed steel plate fixedly installed on the upper clamp and the other first toothed steel plate fixedly installed on the lower clamp. The second toothed steel plate and the corresponding first toothed steel plate are fixedly connected. The first toothed steel plate has a first toothed portion at one end facing the second toothed steel plate, and the second toothed steel plate has a second toothed portion at one end facing the first toothed steel plate. The first toothed portion and the second toothed portion are engaged and fixed together.
[0006] As a further optimization of the present invention, the second toothed steel plate and the corresponding first toothed steel plate are bolted together and fixed.
[0007] As a further optimization of the present invention, a second bolt hole is provided on the second toothed steel plate, and a first bolt hole is provided on the first toothed steel plate. The fastener fixes the first toothed steel plate and the second toothed steel plate together through the second bolt hole and the first bolt hole.
[0008] As a further optimization of the present invention, along the extension direction of the connecting steel plate, the length dimension of the second bolting hole is greater than the width dimension of the second bolting hole.
[0009] As a further optimization of the present invention, the thickness of the second toothed steel plate is greater than the thickness of the tie steel plate.
[0010] As a further optimization of the present invention, the tooth tip of the first toothed portion is inclined toward the side of the first toothed steel plate away from the connecting steel plate, and the tooth tip of the second toothed portion is oriented in the opposite direction to the tooth tip of the first toothed portion.
[0011] As a further optimization of the present invention, the width of the second toothed steel plate is greater than the width of the tie steel plate.
[0012] As a further optimization of the present invention, the area of the first toothed portion is larger than the area of the second toothed portion.
[0013] As a further optimization of the present invention, the connecting steel plate and the second toothed steel plate are welded and fixed.
[0014] As a further optimization of the present invention, the upper clamp and the lower clamp are respectively welded and fixed to the corresponding first toothed steel plate.
[0015] The present invention has at least the following beneficial effects: The present invention provides a novel adjustable toothed high-strength pull plate structure, including an upper clamp, a lower clamp, a first toothed steel plate, a second toothed steel plate, and a connecting steel plate. The two ends of the connecting steel plate are respectively fixedly connected to the second toothed steel plate. The first toothed steel plates are arranged in pairs, with one first toothed steel plate fixedly arranged on the upper clamp and the other first toothed steel plate fixedly arranged on the lower clamp. By setting a first toothed part at the end of the first toothed steel plate facing the second toothed steel plate and setting a second toothed part at the end of the second toothed steel plate facing the first toothed steel plate, the installation of the pull plate structure is facilitated by adjusting the interlocking position of the first toothed part and the second toothed part. At the same time, the contact area between the first toothed steel plate and the second toothed steel plate can be increased, effectively dispersing the stress distribution during lifting and improving the mechanical strength of the toothed pull plate structure. Furthermore, a second bolt hole is provided on the second toothed steel plate, and a first bolt hole is provided on the first toothed steel plate. By using fasteners to assemble with the second and first bolt holes, the second and first toothed steel plates can be fixedly installed. The elongated second bolt hole has a reserved allowance for movement along the height direction, which can accommodate vertical misalignment between the second and first bolt holes. Fasteners can be inserted without precise alignment, avoiding assembly jamming caused by slight offset of the toothed engagement position, and greatly improving the convenience of adjustment operation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the invention Figure 1 A schematic diagram of the right-side view structure; Figure 3 This is a schematic diagram of the structure of the first toothed steel plate of the present invention; Figure 4 This is the present invention. Figure 3 A schematic diagram of the right-side view structure; Figure 5 This is a front view structural schematic diagram of the second toothed steel plate and the connecting steel plate of the present invention; Figure 6 This is the present invention. Figure 5 A schematic diagram of the right-side view structure; Figure 7 This is a schematic diagram showing the orientation of the tips of the first and second toothed portions of the present invention.
[0017] In the diagram: 1. Upper clamp; 2. First toothed steel plate; 3. Fastener; 4. Second toothed steel plate; 5. Connecting steel plate; 6. Lower clamp. Detailed Implementation
[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0019] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the product of this application is usually placed in, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0020] like Figure 1 and Figure 2 As shown, the present invention provides a novel adjustable toothed high-strength pull plate structure, including an upper clamp 1, a lower clamp 6, a first toothed steel plate 2, a second toothed steel plate 4, and a pull-connecting steel plate 5. The two ends of the pull-connecting steel plate 5 are respectively fixedly connected to the second toothed steel plate 4. The first toothed steel plates 2 are arranged in pairs, one first toothed steel plate 2 is fixedly arranged on the upper clamp 1, and the other first toothed steel plate 2 is fixedly arranged on the lower clamp 6. The second toothed steel plate 4 and the corresponding first toothed steel plate 2 are fixedly connected. The first toothed steel plate 2 has a first toothed portion at one end facing the second toothed steel plate 4, and the second toothed steel plate 4 has a second toothed portion at one end facing the first toothed steel plate 2. The first toothed portion and the second toothed portion are engaged and fixed together.
[0021] The first toothed steel plate 2 is fixed by interlocking with the second toothed steel plate 4. The installation height of the tie plate 5 can be adjusted by adjusting the interlocking position of the first toothed part and the second toothed part. This facilitates the installation of the tie plate structure and increases the contact area between the first toothed steel plate 2 and the second toothed steel plate 4, effectively dispersing the stress distribution during lifting and improving the mechanical strength of the toothed tie plate structure.
[0022] by Figure 1 Taking the orientation shown as an example, the upper and lower ends of the connecting steel plate 5 are respectively fixedly connected to the second toothed steel plate 4. As needed, there are multiple connecting steel plates 5, that is, multiple first toothed steel plates 2 are fixedly installed on an upper clamp 1, and multiple first toothed steel plates 2 are fixedly installed on a lower clamp 6, thereby improving the support strength between the upper clamp 1 and the lower clamp 6.
[0023] For example, see [link to relevant documentation]. Figure 2 The second toothed steel plate 4 and the corresponding first toothed steel plate 2 are bolted together and fixed by fasteners 3. For example, the fasteners 3 are bolts, which facilitate the assembly and disassembly of the second toothed steel plate 4 and the first toothed steel plate 2, thereby ensuring accurate alignment of the teeth when the first toothed part and the second toothed part mesh.
[0024] It should be noted that the upper clamp 1 and the lower clamp 6 are respectively welded and fixed to the corresponding first toothed steel plate 2. Specifically, positioning grooves are respectively provided on the upper clamp 1 and the lower clamp 6. The first toothed steel plate 2 is positioned and placed into the positioning grooves to achieve pre-positioning of the first toothed steel plate 2. Then, the first toothed steel plate 2 can be welded and fixed to the upper clamp 1 and the lower clamp 6 respectively. The connecting steel plate 5 and the second toothed steel plate 4 are welded and fixed. The materials of the first toothed steel plate 2, the second toothed steel plate 4 and the connecting steel plate 5 are all high-strength alloy steel to ensure the mechanical strength of the above-mentioned connecting plate structure.
[0025] For example, see [link to relevant documentation]. Figure 3 and Figure 5The second toothed steel plate 4 has a second bolt hole, and the first toothed steel plate 2 has a first bolt hole. The fastener 3 fixes the first toothed steel plate 2 and the second toothed steel plate 4 together through the second bolt hole and the first bolt hole. Specifically, the fastener 3 passes through the second bolt hole and the first bolt hole in sequence, and is further threaded to the upper clamp 1 (or the lower clamp 6), so that the first toothed steel plate 2 and the second toothed steel plate 4 rub against each other along the axis of the fastener 3. Furthermore, during application, if the second tooth section of the transformer experiences tooth wear or fastener 3 aging after long-term use, the second tooth steel plate 4 or fastener 3 can be quickly replaced by disassembling the fastener 3 (fastening bolt). For the undamaged part of the first tooth section, it can continue to be used, or for the undamaged part of the second tooth section, the second tooth steel plate 4 and the tie plate 5 can be put into new accessories for application without replacing the entire tie plate structure, which greatly reduces maintenance costs.
[0026] It should be noted that, as Figure 3 and Figure 5 As shown, four first bolt holes are provided, symmetrically arranged on both sides of the first toothed steel plate 2. Four second bolt holes are also provided, symmetrically arranged on both sides of the second toothed steel plate 4, thereby achieving balanced fixation of the first toothed steel plate 2 and the second toothed steel plate 4. In other embodiments, the number of first bolt holes can be set to six or eight, and the number of second bolt holes is the same as the number of first bolt holes, which is not limited here.
[0027] Continue reading Figure 5 Along the extending direction of the connecting steel plate 5, the length dimension of the second bolt hole is greater than the width dimension of the second bolt hole, and the first toothed steel plate 2 and the second toothed steel plate 4 are located above and below the engagement position of the first toothed portion and the second toothed portion (within the range of...). Figure 1 (Taking the orientation shown as an example) During adjustment, different engagement positions cause the axis of the second bolt hole and the axis of the first bolt hole to be misaligned. The elongated second bolt hole has a reserved amount of movement along the height direction, which can accommodate this misalignment. Fastener 3 can be inserted without precise alignment, avoiding assembly jamming caused by slight offset of the tooth engagement position, and greatly improving the convenience of adjustment operation. Furthermore, during the engagement adjustment of the first and second toothed portions, in order to ensure a firm engagement, there is a small range of up-and-down movement between the teeth. This movement can be accommodated by the allowance reserved along the height direction in the elongated second bolt hole, thereby ensuring a firm engagement between the first and second toothed portions.
[0028] For example, continuing to refer to the figure, the thickness of the second toothed steel plate 4 is greater than the thickness of the connecting steel plate 5. The second toothed steel plate 4, as the core component connecting the connecting steel plate 5 and the first toothed steel plate 2, must simultaneously withstand two forces: first, the weight of the transformer body transmitted by the connecting steel plate 5 (longitudinal tensile force); and second, the compressive and shear stresses generated by its engagement with the first toothed steel plate 2 and the fasteners 3. The thickened design of the second toothed steel plate 4 directly improves its tensile, compressive, and shear strength, preventing deformation and cracking due to stress concentration. This perfectly meets the heavy-load requirements of large transformer bodies and solves the problem of insufficient mechanical strength in traditional perforated connecting plates.
[0029] For example, see [link to relevant documentation]. Figure 7 The tip of the first toothed portion is inclined toward the side of the first toothed steel plate 2 away from the connecting steel plate 5, and the tip of the second toothed portion is in the opposite direction to the tip of the first toothed portion. Figure 7 The diagram illustrates the partial engagement of the first toothed portion (left side) of the first toothed steel plate 2 and the second toothed portion (right side) of the second toothed steel plate 4 on the upper clamp 1. The tips of the first toothed portion are inclined towards the side of the first toothed steel plate 2 away from the connecting steel plate 5, i.e., the inclination direction indicated by the dotted line on the left side. The tips of the second toothed portion are in the opposite direction to the tips of the first toothed portion, i.e., the inclination direction indicated by the dotted line on the right side. Thus, when the second toothed steel plate 4 is subjected to a downward pulling force, the aforementioned tip orientation design allows the first and second toothed portions to engage and form a "barbed" structure, increasing the normal pressure between the tooth surfaces of the first and second toothed portions. The frictional force also increases, thereby producing a self-locking effect and effectively preventing the two toothed portions from sliding or slipping due to the pulling force.
[0030] Similarly, the partial engagement of the first toothed portion of the first toothed steel plate 2 and the second toothed portion of the second toothed steel plate 4 on the lower clamping member 6 is similar to... Figure 7 The bite pattern shown in the diagram is symmetrical, so it will not be elaborated here.
[0031] The width of the second toothed steel plate 4 is greater than that of the connecting steel plate 5, allowing for a wider range of second teeth on the side of the second toothed steel plate 4 facing the first toothed steel plate 2, thus forming a larger meshing contact area with the first toothed portion. This increased contact area effectively disperses localized pressure during tooth meshing, preventing wear and deformation of the tooth tips due to excessive pressure. It also enhances the shear resistance of the toothed portion, ensuring that the meshing structure does not slip or become damaged when bearing heavy loads on the transformer body.
[0032] It should be noted that the area of the first toothed portion is larger than the area of the second toothed portion, so as to ensure that the first toothed portion fully covers and abuts against the area of the second toothed portion, and to ensure sufficient engagement between the first toothed portion of the first toothed steel plate 2 and the second toothed portion of the second toothed steel plate 4.
[0033] It should be noted that, in use, the new adjustable toothed high-strength pull plate structure has a first toothed steel plate 2 welded to the upper clamp 1 and the lower clamp 6 respectively, and a second toothed steel plate 4 welded to both ends of the pull plate 5 respectively. Then, according to the distance between the upper clamp 1 and the lower clamp 6, the first toothed part and the corresponding second toothed part are engaged and abutted, and the first toothed steel plate 2 and the second toothed steel plate 4 are fixedly connected by fasteners 3 passing through the second bolt hole and the first bolt hole in sequence, thereby realizing the assembly of the pull plate structure.
[0034] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A novel adjustable toothed high-strength tension plate structure, characterized in that, It includes an upper clamp (1), a lower clamp (6), a first toothed steel plate (2), a second toothed steel plate (4), and a connecting steel plate (5). The two ends of the connecting steel plate (5) are respectively fixedly connected to the second toothed steel plate (4). The first toothed steel plates (2) are arranged in pairs. One first toothed steel plate (2) is fixedly arranged on the upper clamp (1), and the other first toothed steel plate (2) is fixedly arranged on the lower clamp (6). The second toothed steel plate (4) and the corresponding first toothed steel plate (2) are fixedly connected. The first toothed steel plate (2) is provided with a first toothed portion at one end facing the second toothed steel plate (4), and the second toothed steel plate (4) is provided with a second toothed portion at one end facing the first toothed steel plate (2). The first toothed portion and the second toothed portion are engaged and fixed.
2. The novel adjustable toothed high-strength tension plate structure according to claim 1, characterized in that, The second toothed steel plate (4) and the corresponding first toothed steel plate (2) are bolted together by fasteners (3).
3. The novel adjustable toothed high-strength tension plate structure according to claim 2, characterized in that, The second toothed steel plate (4) has a second bolt hole, and the first toothed steel plate (2) has a first bolt hole. The fastener (3) fixes the first toothed steel plate (2) and the second toothed steel plate (4) together through the second bolt hole and the first bolt hole.
4. The novel adjustable toothed high-strength tension plate structure according to claim 3, characterized in that, Along the extension direction of the tie plate (5), the length dimension of the second bolt hole is greater than the width dimension of the second bolt hole.
5. A novel adjustable toothed high-strength tension plate structure according to claim 4, characterized in that, The thickness of the second toothed steel plate (4) is greater than the thickness of the tie steel plate (5).
6. The novel adjustable toothed high-strength tension plate structure according to claim 1, characterized in that, The tip of the first toothed portion is inclined toward the side of the first toothed steel plate (2) away from the connecting steel plate (5), and the tip of the second toothed portion is in the opposite direction to the tip of the first toothed portion.
7. A novel adjustable toothed high-strength tension plate structure according to claim 6, characterized in that, The width of the second toothed steel plate (4) is greater than the width of the tie steel plate (5).
8. A novel adjustable toothed high-strength tension plate structure according to claim 7, characterized in that, The area of the first toothed portion is larger than the area of the second toothed portion.
9. A novel adjustable toothed high-strength tension plate structure according to claim 2, characterized in that, The tie plate (5) and the second toothed steel plate (4) are welded and fixed.
10. A novel adjustable toothed high-strength tension plate structure according to claim 2, characterized in that, The upper clamp (1) and the lower clamp (6) are respectively welded and fixed to the corresponding first toothed steel plate (2).