Transformer core hoisting tooling
By designing a transformer core hoisting fixture, which employs a four-point vertical hoisting connection and drive mechanism adjustment, the problem of uneven force distribution in traditional hoisting methods is solved, achieving stable hoisting and efficient transportation of the core, and adapting to the needs of cores of various specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN EVEREST SILICON STEEL CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional methods of hoisting iron cores make it difficult to achieve uniform stress, resulting in poor stability and failing to meet the needs of modern transformer production and maintenance.
The transformer core hoisting fixture includes a frame, a fixed hoisting mechanism, and an adjustable hoisting mechanism. It is vertically connected to the four corners of the core through four independent hoisting points. The position of the lugs is adjusted by the drive mechanism to achieve balanced force and stable hoisting.
It improves the uniformity and stability of iron core hoisting, prevents silicon steel sheet deformation and insulation layer damage, reduces the risk of shaking and tilting, improves operational safety and efficiency, and adapts to the precise hoisting needs of iron cores of different specifications.
Smart Images
Figure CN224337002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer core technology, and in particular to a transformer core hoisting fixture. Background Technology
[0002] With the rapid development of the power industry, transformers, as core equipment in power transmission and distribution systems, are increasingly diverse in capacity and size, placing ever-higher technical requirements on their manufacturing, installation, and operation and maintenance. In the transformer production process, the iron core, as a critical component, is directly affected by the safety, stability, and efficiency of its hoisting operations, impacting the overall quality of the transformer and the project's progress. Traditional iron core hoisting methods primarily rely on general-purpose tools such as slings, shackles, and lifting equipment. However, these methods struggle to achieve uniform stress on the iron core, resulting in poor core stability and failing to meet the demands of modern transformer production and operation and maintenance. Utility Model Content
[0003] The main purpose of this utility model is to propose a transformer core hoisting fixture, which aims to solve the problem of how to improve the balanced force on the core and the stable hoisting.
[0004] To achieve the above objectives, this utility model proposes a transformer core hoisting fixture, which includes:
[0005] frame;
[0006] The fixed hoisting mechanism includes a first fixed lug and a second fixed lug. The first fixed lug and the second fixed lug are spaced apart on the frame along a first direction. The first fixed lug is provided with at least two first lifting holes spaced apart along a second direction. The second fixed lug is provided with at least two second lifting holes spaced apart along a second direction.
[0007] An adjustable hoisting mechanism includes a first adjustable lug and a second adjustable lug. Both the first and second adjustable lugs are slidably engaged with the frame. The first and second adjustable lugs are arranged at intervals along a first direction. The first adjustable lug is provided with at least two third lifting holes at intervals along a second direction. The second adjustable lug is provided with at least two fourth lifting holes at intervals along a second direction. The first direction is perpendicular to the second direction.
[0008] The drive mechanism is connected to the frame. The first adjustable hook and the second adjustable hook are both connected to the drive mechanism for transmission, so that the drive mechanism can drive the first adjustable hook and the second adjustable hook to move closer or further apart from each other in a first direction.
[0009] In one embodiment, the first adjustable lug includes a sliding part, a connecting part, and a lifting part. The connecting part and the lifting part are both connected to the sliding part. The sliding part is provided with a through hole for the frame to pass through. The frame slides in cooperation with the through hole. The connecting part is connected to the drive mechanism. The lifting part is provided with at least two third lifting holes.
[0010] In one embodiment, a slider is provided on the sliding part, and a guide rail is provided on the frame. The guide rail extends along a first direction, and the slider slides in cooperation with the guide rail.
[0011] In one embodiment, the number of sliders is at least one, and the number of guide rails is the same as the number of sliders and is set in a one-to-one correspondence.
[0012] In one embodiment, the drive mechanism includes a drive component, a first transmission component, and a second transmission component. Both the first and second transmission components are drively connected to the drive component. The first transmission component is connected to a first adjustable hook, and the second transmission component is connected to a second adjustable hook, so that the drive mechanism can drive the first and second adjustable hooks to move closer or further apart from each other along a first direction through the first and second transmission components, respectively.
[0013] In one embodiment, the drive assembly includes a motor and a reducer, the first transmission assembly includes a coupling, a lead screw and a nut, the motor is driven by the reducer, the reducer is driven by the lead screw through the coupling, the lead screw is threadedly connected to the nut, and the nut is connected to a first adjustable lug.
[0014] In one embodiment, the first transmission assembly further includes a bearing housing connected to the frame, and the lead screw is rotatably mounted on the bearing housing.
[0015] In one embodiment, the drive mechanism is located at the center of the frame; the first fixed lug and the second fixed lug are symmetrically arranged relative to the drive mechanism.
[0016] In one embodiment, there are multiple first fixed hooks, which are arranged sequentially at intervals along a first direction. The number of second fixed hooks is the same as that of the first fixed hooks, and they are arranged in a one-to-one correspondence.
[0017] In one embodiment, the frame includes a frame body and a support frame. A first fixed hook and a second fixed hook are spaced apart on the frame body along a first direction. Both the first adjustable hook and the second adjustable hook are slidably engaged with the frame body. A drive mechanism is connected to the frame body. A fifth lifting hole is provided on the frame body. The number of support frames is at least two, and the at least two support frames are spaced apart on the frame body along the first direction.
[0018] In this embodiment of the utility model, the first direction is Figure 1 The direction indicated by the middle arrow A is the second direction. Figure 1In the direction indicated by arrow B, the frame, as the basic support structure, serves as the load-bearing platform for the entire hoisting device. Its main structure can be made of high-strength steel to ensure overall structural strength and rigidity, capable of withstanding various dynamic loads generated during hoisting. It also provides guidance and positioning references, guiding the movement of the first and second adjustable lugs and ensuring their accurate movement along the first direction. The first and second fixed lugs in the fixed hoisting mechanism and the first and second adjustable lugs in the adjustable hoisting mechanism are all spaced apart on the frame along the first direction. The number of the first, second, third, and fourth lifting holes can be selected according to actual needs; this embodiment does not limit this. In this embodiment, there are two of each of the four lifting holes, and these two holes are spaced apart along the second direction, so that the fixed hoisting mechanism and the adjustable hoisting mechanism each form four independent lifting points. The four lifting points are positioned at the four corners of the iron core, allowing them to be perpendicularly connected to the four corners. This means that the four lifting points exert a vertically upward lifting force on the four corners of the iron core, changing the traditional method where the four lifting straps converge at a single point, resulting in an upward-biased lifting force. This achieves vertical lifting, avoids the uneven force distribution caused by different angles in traditional lifting methods, improves force uniformity, effectively prevents deformation of silicon steel sheets and damage to the insulation layer, enhances stability during lifting, and the four-point support structure also improves the stability of the iron core during lifting, reducing the risk of swaying and tilting during lifting, transportation, and placement. The positions of the first and second fixed lugs are immovable and suitable for standard-sized iron cores. The first and second adjustable lugs can be slidably adjusted to accommodate non-standard-sized iron cores. The overall structure is suitable for hoisting operations of iron cores of various specifications weighing up to 5 tons. A drive mechanism moves the first and second adjustable lugs closer to or further apart along a first direction, achieving automatic adjustment of their positions. This improves operational convenience and automation, enables rapid positioning, increases transfer efficiency, reduces manual intervention, and lowers labor intensity. Furthermore, in this embodiment, the four lifting points can be directly connected to the four corners of the iron core, or indirectly connected via slings or wire ropes; this embodiment does not impose any limitations on this.This utility model embodiment employs a fixed lifting mechanism and an adjustable lifting mechanism to form four independent lifting points. These four lifting points are vertically connected to the four corners of the iron core, changing the traditional method where the force converges at a single point due to the sling's inclination. This structure ensures more balanced force distribution at each lifting point during lifting, avoiding localized stress concentration and effectively preventing deformation of the silicon steel sheets and damage to the insulation layer. This guarantees the mechanical strength and electrical performance of the iron core. Simultaneously, the vertical lifting method reduces the flexible sling's swing, significantly lowering the risk of swaying and tilting of the iron core during lifting, improving operational safety. It is particularly suitable for high-altitude operations or space-constrained scenarios, simplifying the lifting process and shortening preparation time. It is especially suitable for large-scale production and continuous operation environments, helping to adapt to the evolving technological needs and engineering requirements of the power industry. The first and second adjustable lugs can slide and adjust in the first direction, flexibly adjusting the lifting posture to accommodate iron cores of different widths. Used in conjunction with the first and second fixed lugs, it can meet the requirements of 5... For precise lifting of various specifications of iron cores under 3 tons, this utility model significantly improves the equipment's versatility compared to traditional lifting tools that require reconfiguration of sling lengths each time. It reduces the frequency of changing lifting tools, increases on-site operational efficiency, and is adaptable to assembly line work environments, meeting the high efficiency requirements of modern power industry production and maintenance. For iron cores weighing over 3 tons, the first and second adjustable lugs can be adjusted via a drive mechanism for rapid and precise positioning. For smaller iron cores weighing less than 3 tons, the first and second fixed lugs can be used directly for lifting. The operation is flexible and diverse, balancing efficiency and stability while reducing manual labor intensity. The transformer iron core lifting fixture adopts a modular structure design, with each part independently disassembled and replaced. Daily maintenance, upkeep, and repair are convenient, reducing equipment maintenance costs and extending service life. The compact overall structure saves on fixture volume and weight, improving operational convenience, facilitating storage and transportation, and ensuring safety during the lifting process. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the transformer core hoisting fixture of this utility model;
[0021] Figure 2This is a schematic diagram of another perspective of an embodiment of the transformer core hoisting fixture of this utility model;
[0022] Figure 3 This is another perspective structural schematic diagram of an embodiment of the transformer core hoisting fixture of this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of an embodiment of the first adjustable lug of the transformer core hoisting fixture of this utility model;
[0024] Figure 5 This is a schematic diagram of an embodiment of the drive mechanism for the transformer core hoisting fixture of this utility model.
[0025] Explanation of icon numbers:
[0026] 100. Transformer core hoisting fixture; 1. Frame; 11. Frame body; 111. Guide rail; 112. Fifth hoisting hole; 12. Support frame; 2. Fixed hoisting mechanism; 21. First fixed lug; 211. First hoisting hole; 22. Second fixed lug; 221. Second hoisting hole; 3. Adjustable hoisting mechanism; 31. First adjustable lug; 311. Sliding part; 3111. Through hole; 3112. Slider; 312. Connecting part; 313. Hoisting part; 3131. Third hoisting hole; 32. Second adjustable lug; 321. Fourth hoisting hole; 4. Drive mechanism; 41. Drive assembly; 411. Motor; 412. Reducer; 42. First transmission assembly; 421. Coupling; 422. Lead screw; 423. Nut; 424. Bearing seat; 43. Second transmission assembly.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] With the rapid development of the power industry, transformers, as core equipment in power transmission and distribution systems, are increasingly diverse in capacity and size, placing ever-higher technical requirements on their manufacturing, installation, and operation and maintenance. In the transformer production process, the iron core, as a critical component, is directly affected by the safety, stability, and efficiency of its hoisting operations, impacting the overall quality of the transformer and the project's progress. Traditional iron core hoisting methods primarily rely on general-purpose tools such as slings, shackles, and lifting equipment. However, these methods struggle to achieve uniform stress on the iron core, resulting in poor core stability and failing to meet the demands of modern transformer production and operation and maintenance.
[0032] After careful study, the applicant discovered that the traditional method of hoisting iron cores typically involves using four slings connected to the four corners of the iron core, then converging the four slings at an angle onto a single shackle, before being lifted by a crane. This method has revealed numerous problems in practical application:
[0033] ① Uneven stress: Because the lengths of the four slings are difficult to be precisely consistent, the stress on the iron core is uneven during the hoisting process, which can easily cause stress concentration. This may lead to deformation of the silicon steel sheets inside the iron core or damage to the insulation layer, affecting its electrical performance and mechanical strength.
[0034] ② Poor stability: The iron core is prone to swaying or tilting during hoisting, which increases the difficulty of operation and poses safety hazards, especially when working at height or in situations with limited space.
[0035] ③ Poor adaptability: Different specifications and sizes of iron cores require different sling lengths and fixing methods, lacking versatility. Every time the iron core type is changed, the sling configuration needs to be readjusted, which is time-consuming and laborious, reducing work efficiency.
[0036] ④ Low transfer efficiency: Traditional methods have complex operating procedures, slow positioning, and inconvenient loading and unloading. Especially for large-scale production and continuous operation environments, they are difficult to meet the needs of efficient operation. In addition, the long preparation time for hoisting further limits production efficiency.
[0037] The main purpose of this utility model is to propose a transformer core hoisting fixture to solve the problem of how to improve the balanced stress on the core and the stable hoisting.
[0038] Please see Figures 1 to 3 In one embodiment of this utility model, the transformer core hoisting fixture 100 includes a frame 1, a fixed hoisting mechanism 2, an adjustable hoisting mechanism 3, and a driving mechanism 4. The fixed hoisting mechanism 2 includes a first fixed lug 21 and a second fixed lug 22, which are spaced apart on the frame 1 along a first direction. The first fixed lug 21 has at least two first lifting holes 211 spaced apart along a second direction, and the second fixed lug 22 has at least two second lifting holes 221 spaced apart along a second direction. The adjustable hoisting mechanism 3 includes a first adjustable lug 31 and a second adjustable lug 32. The first adjustable lug 31... Both the first and second adjustable hanging ears 31 and 32 are slidably engaged with the frame 1. The first and second adjustable hanging ears 31 and 32 are arranged at intervals along the first direction. The first adjustable hanging ears 31 are provided with at least two third hanging holes 3131 at intervals along the second direction. The second adjustable hanging ears 32 are provided with at least two fourth hanging holes 321 at intervals along the second direction. The first direction is perpendicular to the second direction. The drive mechanism 4 is connected to the frame 1. The first and second adjustable hanging ears 31 and 32 are both connected to the drive mechanism 4 for transmission, so that the drive mechanism 4 can drive the first and second adjustable hanging ears 31 and 32 to move closer to or further away from each other along the first direction.
[0039] In this embodiment of the utility model, the first direction is Figure 1 The direction indicated by the middle arrow A is the second direction. Figure 1In the direction indicated by arrow B, the frame 1 serves as the basic support structure and the load-bearing platform for the entire hoisting device. Its main structure can be made of high-strength steel to ensure overall structural strength and rigidity, enabling it to withstand various dynamic loads generated during hoisting. It also provides guidance and positioning references, guiding the movement of the first adjustable lug 31 and the second adjustable lug 32, ensuring accurate movement along the first direction. The first fixed lug 21 and the second fixed lug 22 in the fixed hoisting mechanism 2, and the first adjustable lug 31 and the second adjustable lug 32 in the adjustable hoisting mechanism 3, are all spaced apart on the frame 1 along the first direction. The number of the first hoisting hole 211, the second hoisting hole 221, the third hoisting hole 3131, and the fourth hoisting hole 321 can be selected according to actual needs; this embodiment does not limit this. In this embodiment, there are two of each of the following lifting holes: the first lifting hole 211, the second lifting hole 221, the third lifting hole 3131, and the fourth lifting hole 321. These holes are spaced apart along the second direction, allowing the fixed lifting mechanism 2 and the adjustable lifting mechanism 3 to form four independent lifting points. The positions of these four lifting points correspond to the four corners of the iron core, enabling the four lifting points to be perpendicularly connected to the four corners of the iron core. Each lifting point generates a vertically upward lifting force on the four corners of the iron core, changing the traditional method where the four lifting straps converge at an angle, causing the lifting force to tilt upward. This achieves vertical lifting, avoids the uneven force caused by different angles in traditional lifting methods, improves the uniformity of force distribution, effectively prevents deformation of silicon steel sheets and damage to the insulation layer, enhances stability during the lifting process, and the four-point support structure also improves the stability of the iron core during the lifting process, reducing the risk of swaying and tilting of the iron core during lifting, transportation, and placement. The positions of the first fixed lug 21 and the second fixed lug 22 are immovable and suitable for standard-sized iron cores. The first adjustable lug 31 and the second adjustable lug 32 can be adjusted by sliding to adapt to non-standard-sized iron cores. The overall structure is suitable for hoisting operations of iron cores of various specifications weighing less than 5 tons. The drive mechanism 4 drives the first adjustable lug 31 and the second adjustable lug 32 to move closer or further apart along the first direction, realizing automatic adjustment of the positions of the first adjustable lug 31 and the second adjustable lug 32, improving the convenience of operation and automation, achieving rapid positioning, improving transfer efficiency, reducing manual intervention, and reducing labor intensity. In addition, in this embodiment, the four lifting points and the four corners of the iron core can be directly connected, or indirectly connected by tools such as slings or wire ropes. This embodiment does not limit this.
[0040] The technical solution of this utility model uses a fixed lifting mechanism 2 and an adjustable lifting mechanism 3 to form four independent lifting points. These four lifting points are vertically connected to the four corners of the iron core, changing the traditional method where the force of the lifting sling converges at a single point. This structure makes the force on each lifting point more balanced during lifting, avoiding localized stress concentration, thus effectively preventing deformation of the silicon steel sheets and damage to the insulation layer, ensuring the mechanical strength and electrical performance of the iron core. Simultaneously, the vertical lifting method reduces the flexible swing of the lifting sling, significantly reducing the risk of swaying and tilting of the iron core during lifting, improving operational safety. It is particularly suitable for high-altitude operations or space-constrained scenarios, and simplifies the lifting process, shortening preparation time. It is especially suitable for large-scale production and continuous operation environments, helping to adapt to the ever-evolving technical needs and engineering requirements of the power industry. The first adjustable lug 31 and the second adjustable lug 32 can slide and adjust in the first direction, flexibly adjusting the lifting posture to accommodate iron cores of different widths. Used in conjunction with the first fixed lug 21 and the second fixed lug 22, it can meet the requirements of 5 For precise hoisting of various specifications of iron cores under 3 tons, compared to the traditional method of reconfiguring sling lengths for each hoisting operation, this utility model greatly improves the versatility of the equipment, reduces the frequency of changing hoisting tools, and improves on-site operation efficiency. It can be adapted to the on-site assembly line working environment and meets the requirements of modern power industry for high efficiency in production and operation. For iron cores weighing more than 3 tons, the positions of the first adjustable lug 31 and the second adjustable lug 32 can be adjusted through the drive mechanism 4 to achieve rapid and accurate positioning. For small iron cores weighing less than 3 tons, the first fixed lug 21 and the second fixed lug 22 can be used directly for hoisting. The operation method is flexible and diverse, taking into account both efficiency and stability, and reducing the intensity of manual labor. The transformer iron core hoisting fixture 100 adopts a modular structure design, and each part can be disassembled and replaced independently. Daily maintenance, upkeep, and inspection are convenient, reducing equipment maintenance costs and extending service life. Moreover, the overall structure is compact, saving fixture volume and weight, improving the convenience of operation, facilitating storage and transportation, and ensuring the safety of the hoisting process.
[0041] Please see Figure 4In one embodiment, the first adjustable lug 31 includes a sliding part 311, a connecting part 312, and a lifting part 313. Both the connecting part 312 and the lifting part 313 are connected to the sliding part 311. The sliding part 311 has a through hole 3111 through which the frame 1 passes. The frame 1 slides within the through hole 3111. The connecting part 312 is connected to the drive mechanism 4. The lifting part 313 has at least two third lifting holes 3131. Specifically, the functions of each component of the first adjustable lug 31 are clearly defined and their connections are clear, facilitating manufacturing, on-site assembly, and subsequent replacement and maintenance. The sliding part 311 has a through hole through which the frame 1 passes. 3111, and slides with the frame 1 to ensure that the first adjustable lug 31 moves smoothly and reliably in the first direction, improving the stability of the overall hoisting process. The connecting part 312 is connected to the drive mechanism 4, so that the first adjustable lug 31 can achieve precise displacement adjustment under the drive of the drive mechanism 4, which can flexibly adapt to the hoisting operation of iron cores of various width specifications. The hoisting part 313 is provided with two third hoisting holes 3131 for forming a vertical hoisting connection with the iron core. The hoisting hole design, combined with the four-point independent support structure, makes the force on each hoisting point more uniform during the hoisting process, effectively preventing the deformation of silicon steel sheets and the damage to the insulation layer, and ensuring the integrity of the iron core.
[0042] Please see Figure 4 and Figure 5 In one embodiment, a slider 3112 is provided on the sliding part 311, and a guide rail 111 is provided on the frame 1. The guide rail 111 extends along a first direction, and the slider 3112 slides in cooperation with the guide rail 111. Specifically, the guide rail 111 extends precisely along the first direction, providing a clear guiding path for the slider 3112, thereby improving the displacement accuracy of the first adjustable lug 31 and ensuring that it can accurately adapt to the hoisting requirements of iron cores of different sizes. The sliding cooperation structure between the slider 3112 and the guide rail 111 ensures that the movement of the first adjustable lug 31 in the first direction is more stable and smooth, avoiding deviation or jamming, and improving the reliability of the hoisting process. Moreover, the slider 3112 and the guide rail 111 are standard mechanical transmission components with mature manufacturing processes and convenient installation, which helps to reduce the production cost and maintenance difficulty of the overall device. They can maintain a good contact state during frequent sliding, extend the service life of components, reduce the maintenance frequency, and also have high load-bearing capacity and anti-eccentric load capacity. They can maintain stable operation under various loads and environments and are suitable for various on-site operation scenarios. In this embodiment, the guide rail 111 and the slider 3112 can be linear guide rails in existing structures.
[0043] According to one embodiment of the present invention, the frame 1 and the hole wall of the through hole 3111 can adopt a roller track guide structure, a dovetail groove guide structure, a linear bearing and an optical axis guide structure to achieve a sliding fit.
[0044] Please see Figure 4 and Figure 5In one embodiment, the number of sliders 3112 is at least one, and the number of guide rails 111 is the same as the number of sliders 3112 and is arranged in a one-to-one correspondence. Specifically, the specific number of sliders 3112 can be selected according to actual needs. This embodiment does not limit this and supports standardized design and assembly, which helps to reduce manufacturing costs and facilitates later maintenance and replacement. The one-to-one correspondence between sliders 3112 and guide rails 111 ensures that the first adjustable lug 31 is subjected to uniform force during sliding in the first direction, avoiding tilting or swaying caused by single-point support, improving overall operational stability, and more. The sliders 3112 and guide rails 111 work together to provide more precise motion trajectory control, which is beneficial for achieving accurate positioning of the first adjustable lug 31. This meets the precise hoisting requirements of iron cores of different sizes. Furthermore, the structure of multiple sliders 3112 and guide rails 111 disperses the load borne by the first adjustable lug 31, enhancing the overall structure's load-bearing capacity and resistance to eccentric loads. This makes it suitable for stable hoisting operations of large-tonnage iron cores. The load is distributed among multiple sliders 3112 and guide rails 111, reducing the frictional pressure on individual contact surfaces, minimizing the risk of localized wear, and extending the equipment's service life. In this embodiment, there are three sliders 3112, and the number of guide rails 111 corresponds to the number of sliders 3112. Two sliders 3112 are respectively positioned on the sliding part 311 along the second direction, and the remaining slider 3112 is positioned along the third direction towards the hoisting part 313. Figure 1 The directions indicated by the middle arrow C are the first, second, and third directions, which are perpendicular to each other.
[0045] Please see Figure 2 and Figure 5In one embodiment, the drive mechanism 4 includes a drive assembly 41, a first transmission assembly 42, and a second transmission assembly 43. Both the first transmission assembly 42 and the second transmission assembly 43 are connected to the drive assembly 41. The first transmission assembly 42 is connected to the first adjustable hook 31, and the second transmission assembly 43 is connected to the second adjustable hook 32, so that the drive mechanism 4 can drive the first adjustable hook 31 and the second adjustable hook 32 to move closer or further apart along a first direction via the first transmission assembly 42 and the second transmission assembly 43, respectively. Specifically, the first adjustable hook 31 and the second adjustable hook 32 can be respectively connected to the first transmission assembly 41. Driven by the second and third transmission components 43, the spacing can be flexibly adjusted to adapt to the hoisting tasks of iron cores with different widths, which improves the versatility and applicability of the tooling. Moreover, the use of one drive component 41 to drive two transmission components reduces redundant power devices, facilitates centralized control, supports automated operation, simplifies the system structure, saves installation space, and is conducive to the layout and integrated application of equipment in limited spaces, reducing manufacturing and maintenance costs. At the same time, it meets the synchronous control requirements of the first adjustable lug 31 and the second adjustable lug 32, ensuring that the iron core is subjected to uniform force during hoisting and avoiding tilting or eccentric loading problems caused by asynchronous lug positions.
[0046] According to one embodiment of the present invention, the drive mechanism 4 includes a first drive component, a second drive component, a first transmission component 42, and a second transmission component 43. The first drive component is connected to the first adjustable hook 31 via the first transmission component 42, and the second drive component is connected to the second adjustable hook 32 via the second transmission component 43. That is, two power systems are provided to drive the first adjustable hook 31 and the second adjustable hook 32 respectively.
[0047] According to another embodiment of the present invention, the drive mechanism 4 includes a drive component 41 and a transmission component, the drive component 41 and the transmission component are connected in transmission, and the first adjustable hook 31 and the second adjustable hook 32 are both connected in transmission to the transmission component, that is, only one power system drives the first adjustable hook 31 and the second adjustable hook 32 to move simultaneously.
[0048] Please see Figure 5In one embodiment, the drive assembly 41 includes a motor 411 and a reducer 412, and the first transmission assembly 42 includes a coupling 421, a lead screw 422, and a nut 423. The motor 411 is driven by the reducer 412, the reducer 412 is driven by the lead screw 422 via the coupling 421, the lead screw 422 is threadedly connected to the nut 423, and the nut 423 is connected to the first adjustable lug 31. Specifically, the drive assembly 41 provides a power source by combining the motor 411 and the reducer 412, transmits power to the lead screw 422 via the coupling 421, and converts the rotational motion into linear motion with the help of the nut 423, ultimately driving the first adjustable lug 31 to move along a first direction. This structure not only achieves automatic adjustment of the position of the first adjustable lug 31, but also takes into account precision. The system meets the requirements of speed, load, and other parameters, and is a mature and reliable transmission solution. Utilizing a lead screw 422 and nut 423 transmission structure, it boasts high transmission precision, enabling accurate control of the position of the first adjustable lug 31. This meets the need for fine adjustment of the lug spacing during the hoisting of iron cores of different sizes. The reducer 412 effectively amplifies the output torque of the motor 411, giving the transmission system a stronger load capacity and ensuring that the first adjustable lug 31 can move smoothly even under heavy loads. The coupling 421 rigidly connects the reducer 412 and the lead screw 422, ensuring efficient and stable power transmission and avoiding slippage or step loss caused by flexible transmission, thus improving the reliability of the system. The clear structure and defined functions of each component facilitate standardized production, modular assembly, and subsequent maintenance and replacement. In this embodiment, the motor 411, reducer 412, coupling 421, lead screw 422, and nut 423 are all existing structures, and their specific structures will not be described further in this embodiment.
[0049] According to one embodiment of the present invention, the drive mechanism 4 may be a hydraulic rod push rod, a cylinder push rod, a motor 411 push rod, or other means that can achieve horizontal movement.
[0050] Please see Figure 5In one embodiment, the first transmission assembly 42 further includes a bearing housing 424, which is connected to the frame 1. The lead screw 422 is rotatably mounted on the bearing housing 424. Specifically, the bearing housing 424 provides a reliable support point for the lead screw 422, enhancing its bending resistance under high-speed or heavy-load conditions and preventing deformation or breakage of the lead screw 422 due to uneven force. Under the constraint of the bearing housing 424, the lead screw 422 maintains good coaxiality, reducing eccentricity errors during rotation, thereby improving the positioning accuracy and adjustment stability of the transmission system. Rolling bearings are typically installed inside the bearing housing 424, which reduces friction and heat generation during the rotation of the lead screw 422, thus extending the service life of the lead screw 422 and the first transmission assembly 42 and reducing maintenance frequency. The bearing housing 424 adopts a modular design, which facilitates quick assembly with the frame 1, and the lead screw 422 can be aligned and calibrated by adjusting the installation position, improving the assembly efficiency and quality of the whole machine. The bearing housing 424 not only provides rotational support, but also acts as a limiter to prevent the lead screw 422 from axially moving or falling off during operation, thereby improving the safety and reliability of equipment operation.
[0051] In this embodiment, for ease of manufacturing and installation, the first fixed hook 21 and the second fixed hook 22 have the same structure, the first adjustable hook 31 and the second adjustable hook 32 have the same structure, and the first transmission assembly 42 and the second transmission assembly 43 have the same structure.
[0052] Please see Figure 2 In one embodiment, the drive mechanism 4 is located at the center of the frame 1; the first fixed lug 21 and the second fixed lug 22 are symmetrically arranged relative to the drive mechanism 4; specifically, the first fixed lug 21 and the second fixed lug 22 are symmetrically arranged on both sides of the drive assembly 41, so that the force distribution of the iron core during the hoisting process is more uniform, reducing the risk of off-center load, enhancing the overall structural rigidity of the frame 1, improving the equipment's resistance to deformation under load, improving the safety and stability of the hoisting process, and making full use of its surrounding space, avoiding equipment structural redundancy, making the hoisting fixture more compact as a whole, and suitable for working environments with limited space.
[0053] Please see Figures 1 to 3In one embodiment, there are multiple first fixed lugs 21, which are arranged sequentially at intervals along a first direction. The number of second fixed lugs 22 is the same as that of the first fixed lugs 21, and they are arranged in a one-to-one correspondence. Specifically, the first fixed lugs 21 and second fixed lugs 22 exist in pairs. The specific number of first fixed lugs 21 can be selected according to requirements; this embodiment does not limit this. The multiple first fixed lugs 21 are arranged uniformly or non-uniformly along the first direction, which can flexibly match the lifting point positions of iron cores of different widths, reducing the need for frequent adjustments to the adjustable lifting mechanism 3 and improving the equipment's versatility. For common iron core specifications, existing first fixed lugs 21 and corresponding second fixed lugs 22 can be directly selected without waiting for the adjustable lifting mechanism 3 to be adjusted, shortening preparation time and improving work efficiency. Each first fixed lug 21 and corresponding second fixed lug 22 is an independent module, which can be manufactured, installed, or replaced separately, which helps reduce maintenance costs and reserves space for future functional expansion. The fixed lifting mechanism 2 is responsible for supporting the conventional lifting points, while the adjustable lifting mechanism 3 is used for fine-tuning or special size adaptation. The two work together to further enhance the functional integrity and applicability of the entire lifting fixture. In this embodiment, there are four first fixed lugs 21 and four second fixed lugs 22. The four first fixed lugs 21 and corresponding second fixed lugs 22 can be selected to lift small iron cores weighing less than 3 tons as needed.
[0054] Please see Figure 2 and Figure 5In one embodiment, the frame 1 includes a frame body 11 and support frames 12. A first fixed lug 21 and a second fixed lug 22 are spaced apart on the frame body 11 along a first direction. A first adjustable lug 31 and a second adjustable lug 32 are both slidably engaged with the frame body 11. A drive mechanism 4 is connected to the frame body 11. A fifth lifting hole 112 is provided on the frame body 11. The number of support frames 12 is at least two, and at least two support frames 12 are spaced apart on the frame body 11 along the first direction. Specifically, the specific number of support frames 12 can be selected according to actual needs; this embodiment does not limit this. At least two support frames 12 can abut against the ground or other supporting structures when the iron core is not being hoisted, ensuring that the tooling can be placed stably when not in use, preventing... To prevent safety hazards caused by tipping or center of gravity shift, and to avoid deformation, wear, or damage to the fixed lifting mechanism 2 and adjustable lifting mechanism 3 due to direct contact with the ground, the system improves on-site management standardization. Furthermore, when not in use, the tooling is stably supported by the support frame 12, reducing the need for manual handling or auxiliary support and improving the safety and convenience of operation. The frame body 11 has a fifth lifting hole 112, which can be used to connect external lifting equipment, enabling rapid lifting and transfer of the entire lifting tooling set. This is particularly suitable for scenarios requiring frequent movement to different work areas. The fifth lifting hole 112 and the support frame 12 are designed in tandem, giving the lifting tooling both lifting and storage functions, improving the integrity and practicality of the equipment, and enhancing its flexibility in practical applications. In this embodiment, there are two support frames 12, located at opposite ends of the frame body 11 along the first direction. This provides stable support and avoids interference with the first adjustable lug 31 and the second adjustable lug 32.
[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A transformer core hoisting fixture, characterized in that, The transformer core hoisting fixture includes: frame; A fixed hoisting mechanism, comprising a first fixed lug and a second fixed lug, wherein the first fixed lug and the second fixed lug are spaced apart on the frame along a first direction, and the first fixed lug is provided with at least two first lifting holes spaced apart along a second direction, and the second fixed lug is provided with at least two second lifting holes spaced apart along a second direction. An adjustable hoisting mechanism is provided, comprising a first adjustable lug and a second adjustable lug, both of which are slidably engaged with the frame. The first and second adjustable lugs are arranged at intervals along a first direction. The first adjustable lug is provided with at least two third lifting holes at intervals along a second direction, and the second adjustable lug is provided with at least two fourth lifting holes at intervals along a second direction. The first direction is perpendicular to the second direction. A drive mechanism is connected to the frame. The first adjustable hook and the second adjustable hook are both connected to the drive mechanism for transmission, so that the drive mechanism can drive the first adjustable hook and the second adjustable hook to move closer to or further away from each other along the first direction.
2. The transformer core hoisting fixture as described in claim 1, characterized in that, The first adjustable hook includes a sliding part, a connecting part, and a lifting part. The connecting part and the lifting part are both connected to the sliding part. The sliding part is provided with a through hole for the frame to pass through. The frame slides in cooperation with the through hole. The connecting part is drivenly connected to the drive mechanism. The lifting part is provided with at least two third lifting holes.
3. The transformer core hoisting fixture as described in claim 2, characterized in that, The sliding part is provided with a slider, the frame is provided with a guide rail, the guide rail extends along the first direction, and the slider slides in cooperation with the guide rail.
4. The transformer core hoisting fixture as described in claim 3, characterized in that, The number of sliders is at least one, and the number of guide rails is the same as the number of sliders and is set in a one-to-one correspondence.
5. The transformer core hoisting fixture as described in any one of claims 1 to 4, characterized in that, The driving mechanism includes a driving component, a first transmission component, and a second transmission component. Both the first transmission component and the second transmission component are connected to the driving component. The first transmission component is connected to the first adjustable hook, and the second transmission component is connected to the second adjustable hook, so that the driving mechanism can drive the first adjustable hook and the second adjustable hook to move closer or further apart from each other along the first direction through the first transmission component and the second transmission component, respectively.
6. The transformer core hoisting fixture as described in claim 5, characterized in that, The drive assembly includes a motor and a reducer. The first transmission assembly includes a coupling, a lead screw, and a nut. The motor is driven by the reducer. The reducer is driven by the lead screw through the coupling. The lead screw is threadedly connected to the nut. The nut is connected to the first adjustable lug.
7. The transformer core hoisting fixture as described in claim 6, characterized in that, The first transmission assembly further includes a bearing housing, which is connected to the frame, and the lead screw is rotatably mounted on the bearing housing.
8. The transformer core hoisting fixture as described in any one of claims 1 to 4, characterized in that, The drive mechanism is located at the center of the frame; the first fixed hook and the second fixed hook are symmetrically arranged relative to the drive mechanism.
9. The transformer core hoisting fixture as described in claim 8, characterized in that, The number of the first fixed hooks is multiple, and the multiple first fixed hooks are arranged at intervals along the first direction. The number of the second fixed hooks is the same as that of the first fixed hooks and they are arranged in a one-to-one correspondence.
10. The transformer core hoisting fixture as described in any one of claims 1 to 4, characterized in that, The frame includes a frame body and a support frame. The first fixed hook and the second fixed hook are spaced apart on the frame body along the first direction. The first adjustable hook and the second adjustable hook are both slidably engaged with the frame body. The drive mechanism is connected to the frame body. The frame body is provided with a fifth lifting hole. The number of support frames is at least two, and the at least two support frames are spaced apart on the frame body along the first direction.