A transformer lifting ring and lifting structure

Abstract

This utility model discloses a transformer lifting ring and lifting structure, relating to the field of power engineering technology. The utility model includes a hoist and a transformer body. Lifting ring frames are fixed to both sides of the top of the transformer body, and lifting holes are provided on the outer surface of the lifting ring frames. Shear pins are installed inside the lifting holes, and bow-shaped shackles and magnetic rings are connected to the outside of the shear pins. Through the arrangement of bow-shaped shackles, shear pins, lifting holes, abutment plates, and mounting holes, this utility model allows for simple and convenient installation. During installation, the shear pins are simply passed through the lifting holes and bow-shaped shackles, eliminating the need for additional tightening of the threaded structure and installation of pins. When lifting the transformer body, the bow-shaped shackles and shear pins are preferentially pulled upwards. At this time, the shear pins correspond to the abutment plate and are limited by the abutment plate, preventing them from displacing backwards. The shape of the shear pins also prevents them from displacing forwards, thus ensuring the stability of the structure during lifting. Assembly and disassembly are simple and convenient, and the structure has good stability.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, specifically to a transformer lifting ring and lifting structure. Background Technology

[0002] Transformers are key equipment in power systems used for electrical energy conversion and transmission. They convert electrical energy at different voltage levels through the principle of electromagnetic induction and are widely used in power generation, transmission, and distribution. They are mainly composed of components such as iron core, windings, and oil tanks, and must meet the requirements of structural stability and safe operation under high voltage and high current conditions.

[0003] Transformer hoisting is a crucial operation in the production, transportation, and installation process. Due to the significant weight of transformers (especially large equipment), specialized hoisting equipment is required. During hoisting, it is essential to ensure balanced force distribution at the lifting points to prevent equipment deformation or damage. However, traditional lifting rings and lifting structures often suffer from insufficient connection stability and inconvenient assembly and disassembly, affecting the safety and efficiency of hoisting.

[0004] During the production, transportation, and dismantling processes, excavators are typically used in conjunction with lifting structures, cranes, jacking vehicles, or manual hoists to lift transformers. The hoists or manual hoists of the lifting equipment are usually connected to the transformer lifting rings using bow-shaped shackles. Bow-shaped shackles need to be tightened into the threaded structure during dismantling and assembly. In addition, some bow-shaped shackles have additional cotter pins or other pin structures inserted to further increase stability, which further increases the number of operation steps and time required during dismantling and assembly, resulting in a longer dismantling and assembly process. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a transformer lifting ring and lifting structure to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transformer lifting ring and lifting structure, including a hoist and a transformer body, wherein lifting ring frames are fixed on both sides of the top of the transformer body, and lifting holes are provided on the outer surface of the lifting ring frames, and shear pins are provided inside the lifting holes. Bow-shaped shackles and magnetic rings are respectively connected to the outside of the shear pins, and handles are connected to both sides of the shear pins. A backing plate is fixed on the top of the lifting ring frame, and mounting holes are provided on the outer surface of the backing plate. Reinforcing frames are fixed on both sides of the back of the backing plate.

[0007] By adopting the above technical solution and through the coordinated operation of various components, the disassembly and assembly process of the lifting ring and lifting structure can be simplified, reducing operation steps and time consumption, while ensuring structural stability during the lifting process, effectively solving the problem of inconvenient disassembly and assembly of traditional structures.

[0008] Furthermore, the lifting hole is racetrack-shaped, and the width of the mounting hole is greater than the diameter of the shear pin.

[0009] By adopting the above technical solution, the racetrack-shaped lifting hole can accommodate the displacement requirements of the shear pin during lifting, which is pulled upwards by tension, and after lifting, it is pulled downwards by gravity, providing sufficient space for the shear pin to move up and down. The width of the mounting hole is greater than the diameter of the shear pin, which can provide sufficient space for the shear pin to pass through during disassembly, ensuring smooth disassembly operation.

[0010] Furthermore, the shear pin is detachably connected to the bow-shaped shackle and the lifting hole, and the bow-shaped shackle is detachably connected to the lifting ring frame.

[0011] By adopting the above technical solution, the detachable connection design can complete the assembly and disassembly of the shearing pin, bow shackle and lifting ring without the need for additional tools, which greatly simplifies the assembly and disassembly steps, reduces operation time and improves the efficiency of lifting operations.

[0012] Furthermore, the shear pin abuts against the stop plate, and the longitudinal section of the shear pin is T-shaped.

[0013] By adopting the above technical solution, the shear pin moves upward and abuts against the stop plate during hoisting, and the stop plate can limit the backward displacement of the shear pin; the T-shaped structure can abut against the back of the bow-shaped shackle, limiting the forward displacement of the shear pin. The double limiting effect can effectively prevent the shear pin from falling off during hoisting and ensure the stability of the structure.

[0014] Furthermore, the handle has a "C" shaped cross-section and is rotatably connected to the shear pin.

[0015] By adopting the above technical solutions, the C-shaped cross section makes it easier for operators to exert force and improves the ease of operation during disassembly; the rotating connection design allows the handle to fit against the shear pin when not in operation, avoiding interference with the assembly and operation of other components.

[0016] Furthermore, both the bow-shaped shackle and the shear pin are made of 42CrMo4 high-strength alloy steel or carbon steel, and both the bow-shaped shackle and the shear pin have a hot-dip galvanized coating.

[0017] By adopting the above technical solutions, high-strength alloy steel or carbon steel materials possess excellent mechanical properties, which can meet the load-bearing requirements during transformer hoisting and prevent component deformation or breakage; the hot-dip galvanized coating can form an effective anti-corrosion barrier, resist external environmental corrosion, and extend the service life of components.

[0018] Furthermore, the magnetic ring is a neodymium iron boron strong magnet, and the magnetic ring is fixedly connected to the shear pin by epoxy resin adhesive.

[0019] By adopting the above technical solution, the neodymium iron boron strong magnet has a strong magnetic attraction force, which can attract the bow-shaped shackle and prevent the shear pin from loosening or shifting when not being hoisted; the epoxy resin adhesive has high bonding strength, which can firmly fix the magnetic ring to the shear pin, prevent the magnetic ring from falling off during hoisting, and ensure that it continues to play a stable role.

[0020] Furthermore, the hoist is equipped with lifting straps on both sides of its bottom, and the lifting straps are connected to bow-shaped shackles.

[0021] By adopting the above technical solution, the lifting sling can flexibly adapt to the transmission of tension at different angles, and smoothly transmit the lifting force of the hoist to the bow shackle.

[0022] Furthermore, the longitudinal section of the side of the reinforcing frame is a right-angled trapezoid, and the longitudinal section of the front of the reinforcing frame is ladder-shaped.

[0023] By adopting the above technical solution, the right-angled trapezoidal structure enables the reinforcing frame to fit tightly against the connection between the abutment plate and the lifting ring frame and to act as a diagonal brace; the ladder-shaped structure can disperse the stress borne by the abutment plate through multiple supports, significantly enhancing the abutment plate's resistance to bending and preventing the abutment plate from deforming when sheared by the pin.

[0024] Furthermore, the abutment plate is welded and fixed to the lifting ring frame, and the reinforcing frame is welded and fixed to both the abutment plate and the lifting ring frame.

[0025] By adopting the above technical solution, the welding and fixing method makes the support plate, the reinforcing frame and the lifting ring frame form a rigid whole, avoiding relative displacement of each component when the lifting is under stress, effectively improving the load-bearing strength and stability of the overall structure, and ensuring the safety and reliability of the lifting process.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, through the design of an arc-shaped shackle, shear pin, lifting hole, abutment plate, and mounting hole, allows for simple and convenient installation. During installation, the shear pin is simply passed through the lifting hole and the arc-shaped shackle, eliminating the need for additional tightening of the threaded structure or installation of a pin. When lifting the transformer body, the arc-shaped shackle and shear pin are initially pulled upwards by tension. At this point, the shear pin aligns with the abutment plate and is prevented from dislodging backwards. The shape of the shear pin also prevents it from dislodging forwards, ensuring structural stability during lifting. Furthermore, the shear pin abuts against the upper part of the lifting hole, allowing the transformer body to be lifted by the lifting ring frame. After lifting, the upward pulling force from the hoist is lost, causing the arc-shaped shackle and shear pin to move downwards under gravity. At this point, the shear pin aligns with the mounting hole. Disassembly is simple and convenient; the assembly and disassembly are simple and convenient, and the structure exhibits good stability.

[0028] 2. This utility model, through the design of a handle and a magnetic ring, uses the magnetic ring to hold the bow-shaped shackle, preventing the shear pin from loosening or shifting when the transformer body is not lifted. Although the bow-shaped shackle is made of high-strength alloy steel with a hot-dip galvanized coating, and the small size of the magnetic ring affects the attraction strength between the magnetic ring and the bow-shaped shackle, the use of a strong magnet to make the magnetic ring increases the magnetic attraction force, thereby ensuring stability. Furthermore, when disassembling the shear pin, the handle can be rotated upwards to make it horizontal, and then the shear pin can be pulled off by overcoming the magnetic attraction force of the magnetic ring. This increases the stability of the shear pin when the transformer is not lifted.

[0029] 3. By setting up a reinforcing frame, this utility model supports the back of the backing plate, increasing the structural strength of the backing plate and effectively preventing the backing plate from bending backward due to the shear pin pressing against it; thus increasing structural strength and improving stability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the hoist structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the bow-shaped shackle structure of this utility model;

[0033] Figure 4 This is a side sectional view of the lifting ring frame of this utility model;

[0034] Figure 5 This is a side sectional view of the bow-shaped shackle of this utility model;

[0035] Figure 6 This is a schematic diagram of the back structure of the lifting ring frame of this utility model.

[0036] In the diagram: 1. Hoist; 2. Lifting sling; 3. Bow-shaped shackle; 4. Lifting ring frame; 5. Transformer body; 6. Shear pin; 7. Reinforcing frame; 8. Handle; 9. Magnetic ring; 10. Lifting hole; 11. Support plate; 12. Mounting hole. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1:

[0040] A transformer lifting ring and lifting structure, such as Figures 1-6 As shown, the system includes a hoist 1 and a transformer body 5. Both sides of the top of the transformer body 5 are fixed with lifting ring frames 4. Lifting holes 10 are formed on the outer surface of the lifting ring frames 4, and these holes are racetrack-shaped. Shear pins 6 are installed inside the lifting holes 10. Bow-shaped shackles 3 and magnetic rings 9 are connected to the outside of the shear pins 6. The magnetic rings 9 are neodymium iron boron strong magnets. The magnetic rings 9 are fixedly connected to the shear pins 6 with epoxy resin. Both the bow-shaped shackles 3 and the shear pins 6 are made of 42CrMo4 high-strength alloy steel or carbon steel, and both have a hot-dip galvanized coating. The bow-shaped shackle 3 and lifting hole 10 are detached and connected. The bow-shaped shackle 3 is then detached and connected to the lifting ring frame 4. The operator inserts the shear pin 6 through the lifting hole 10 on the lifting ring frame 4 and into the bow-shaped shackle 3. At the same time, the magnetic ring 9 on the shear pin 6 will attract the bow-shaped shackle 3. For example, the magnetic attraction of a strong magnet of grade N42 to N45 is used to prevent the shear pin 6 from loosening or shifting when not being lifted. Although the attraction strength of the magnetic ring 9 is affected by the material, surface coating, and size of the bow-shaped shackle 3, the strong magnet used can still provide sufficient magnetic attraction to help maintain the relative stability of the shear pin 6 and the bow-shaped shackle 3. Handles 8 are connected to both sides of the shear pin 6. The handles 8 have a "C" shaped cross-section and are rotatably connected to the shear pin 6. During disassembly, the operator rotates the handles 8 upwards to make them horizontal. Then, the operator pulls the handles 8 to overcome the magnetic attraction of the magnetic ring 9 on the bow-shaped shackle 3 and pulls the shear pin 6 backward from the mounting hole 12. A stop plate 11 is fixed to the top of the lifting ring frame 4. The shear pin 6 abuts against the stop plate 11. The longitudinal section of the shear pin 6 is "T" shaped. The shear pin 6 is limited by the stop plate 11 and cannot move backward. The longitudinal section of the shear pin 6 itself has a T-shaped structure, and the larger diameter end can... The back of the arched shackle 3 forms an abutment, thereby restricting the forward displacement and detachment of the shear pin 6; the outer surface of the abutment plate 11 is provided with a mounting hole 12, the width of which is greater than the diameter of the shear pin 6, so that the shear pin 6 can be easily pulled out of the mounting hole 12 during disassembly, ensuring the convenience of disassembly operation; the back of the abutment plate 11 is fixed with reinforcing frames 7 on both sides, which provide effective support for the abutment plate 11, enhance the structural strength of the abutment plate 11, and prevent the abutment plate 11 from bending backward under force when the shear pin 6 abuts against it.

[0041] See Figure 1 and Figure 2 In the above embodiment, lifting belts 2 are connected to both sides of the bottom of the hoist 1. The lifting belts 2 are connected to the bow-shaped shackles 3. The lifting belts 2 can flexibly adapt to the transmission of tension at different angles, and stably transmit the lifting force of the hoist 1 to the bow-shaped shackles 3.

[0042] Example 2:

[0043] Based on the above embodiment 1, in order to further enhance the support strength of the abutment plate 11, the following settings are now implemented.

[0044] See Figures 4-6 In the above embodiment, the longitudinal section of the side of the reinforcing frame 7 is a right trapezoid, and the longitudinal section of the front of the reinforcing frame 7 is ladder-shaped. The right trapezoidal structure allows the reinforcing frame 7 to form a diagonal brace on the abutment plate 11. The ladder-shaped structure can disperse the stress borne by the abutment plate through multiple support sections, significantly improving the abutment plate's resistance to bending.

[0045] Example 3:

[0046] Based on the above embodiment 1, in order to ensure the connection stability between the abutment plate 11 and the reinforcing frame 7 and the lifting ring frame 4, the following settings are now adopted.

[0047] See Figures 4-6 In the above embodiment, the abutment plate 11 is welded and fixed to the lifting ring frame 4, and the reinforcing frame 7 is welded and fixed to the abutment plate 11 and the lifting ring frame 4 respectively. Welding and fixing can make each component form a rigid whole, avoid relative displacement when the lifting is subjected to force, and further improve the overall load-bearing capacity of the structure.

[0048] The implementation principle of this utility model is as follows: First, during installation, the hoist 1 is an indoor crane, an outdoor crane vehicle, or a manual hoist 1. If it is a manual hoist 1, its top is placed by a hook. Then, the worker passes the shear pin 6 through the lifting hole 10 on the lifting ring frame 4 and the inside of the bow-shaped shackle 3. At the same time, the magnetic ring 9 on the shear pin 6 will attract the bow-shaped shackle 3. For example, the magnetic attraction of a strong magnet of grade N42 to N45 is used to prevent the shear pin 6 from loosening or shifting when not being hoisted. Although the magnetic ring 9 is affected by the material, surface coating and size of the bow-shaped shackle 3, the strong magnet used can still provide sufficient magnetic attraction to help maintain the relative stability of the shear pin 6 and the bow-shaped shackle 3.

[0049] When hoisting begins, hoist 1 is activated, and hoisting belt 2 pulls the bow-shaped shackle 3 upward. The lifting hole 10 is racetrack-shaped to accommodate the displacement requirements of shear pin 6, which moves upward under tension during hoisting and downward under gravity after hoisting. This causes the bow-shaped shackle 3 to drive the shear pin 6 to move upward synchronously under force. During the upward movement, the shear pin 6 will gradually align with the support plate 11. The shear pin 6 is limited by the support plate 11 and cannot move backward. The longitudinal section of the shear pin 6 is T-shaped, and the larger diameter end can abut against the back of the bow-shaped shackle 3, thus restricting the shear pin 6 from moving forward and falling off. At the same time, the shear pin 6 will abut against the upper part of the lifting hole 10, and the lifting ring frame 4 will be under force, thereby lifting the transformer body 5. During this process, the reinforcing frame 7 on the back of the support plate 11 provides effective support for the support plate 11, enhancing the structural strength of the support plate 11 and preventing the support plate 11 from bending backward under force when the shear pin 6 abuts against it.

[0050] When the hoisting is completed, the hoist 1 releases its tension, and the bow-shaped shackle 3 and shear pin 6 move downward under the action of gravity. The shear pin 6 gradually aligns with the mounting hole 12 on the support plate 11. During disassembly, the operator rotates the handle 8 upward to make it horizontal. Then, the operator pulls the handle 8 to overcome the magnetic attraction of the magnetic ring 9 on the bow-shaped shackle 3 and pulls the shear pin 6 out of the mounting hole 12. The width of the mounting hole 12 is greater than the diameter of the shear pin 6, which allows the shear pin 6 to be pulled out of the mounting hole 12 smoothly during disassembly, ensuring the convenience of the disassembly operation.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A transformer lifting ring and lifting structure, comprising a hoist (1) and a transformer body (5), characterized in that: The transformer body (5) is fixed with lifting rings (4) on both sides of the top. The outer surface of the lifting rings (4) is provided with lifting holes (10). The lifting holes (10) are provided with shear pins (6). The shear pins (6) are connected to bow-shaped shackles (3) and magnetic rings (9) respectively. The shear pins (6) are connected to handles (8) on both sides. The top of the lifting rings (4) is fixed with a backing plate (11). The outer surface of the backing plate (11) is provided with mounting holes (12). The backing plate (11) is fixed with reinforcing frames (7) on both sides.

2. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The lifting hole (10) is racetrack shaped, and the width of the mounting hole (12) is greater than the diameter of the shear pin (6).

3. The transformer lifting ring and lifting structure according to claim 2, characterized in that: The shear pin (6) is detached from the bow shackle (3) and the lifting hole (10), and the bow shackle (3) is detached from the lifting ring frame (4).

4. The transformer lifting ring and lifting structure according to claim 3, characterized in that: The shearing pin (6) abuts against the abutment plate (11), and the longitudinal section of the shearing pin (6) is "T" shaped.

5. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The handle (8) has a "C" shaped cross section and is rotatably connected to the shear pin (6).

6. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The bow-shaped shackle (3) and the shear pin (6) are both made of 42CrMo4 high-strength alloy steel or carbon steel, and the surfaces of the bow-shaped shackle (3) and the shear pin (6) are both coated with hot-dip galvanized coating.

7. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The magnetic ring (9) is a neodymium iron boron strong magnet, and the magnetic ring (9) is fixedly connected to the shear pin (6) by epoxy resin glue.

8. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The hoist (1) has lifting straps (2) connected to both sides of its bottom, and the lifting straps (2) are connected to the bow-shaped shackles (3).

9. The transformer lifting ring and lifting structure according to claim 1, characterized in that: The longitudinal section of the side of the reinforcing frame (7) is a right trapezoid, and the longitudinal section of the front of the reinforcing frame (7) is ladder-shaped.

10. The transformer lifting ring and lifting structure according to claim 9, characterized in that: The abutment plate (11) is welded and fixed to the lifting ring frame (4), and the reinforcing frame (7) is welded and fixed to the abutment plate (11) and the lifting ring frame (4) respectively.

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