Universal single-lug lifting yoke plate tool

Abstract

The invention discloses a universal single-lug yoke plate lifting tool, relates to the field of power construction maintenance tools, and aims to solve the problems that when an insulator chain is subjected to maintenance, maintenance, replacement and other operations, a yoke plate is lifted to a proper position through shackle connection in the prior art, so that a force arm is prolonged, the yoke plate is lifted through connection with a hoist, the operation is not standard, and the operation is inconvenient. The working difficulty is increased, the working efficiency is low, and potential safety hazards exist. The device comprises a main body, a flat lug bolt assembly and a connecting buckle, the left side of the main body is fixedly connected with a yoke plate through the flat lug bolt assembly, the connecting buckle is detachably connected into a connecting hole in the right portion of the main body, and the connecting buckle is used for being connected with a lever block. Through the combination of the main body, the flat lug bolt assembly and the connecting buckle, a safe and efficient yoke plate lifting system is constructed, the problems of loosening, displacement and the like are avoided, the operation safety is guaranteed, and compared with traditional shackle connection, the working difficulty is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of electric power construction and maintenance tools, in particular to a universal single-ear lifting and connecting plate tool. Background Art

[0002] With the continued expansion of the electric power industry, power transmission lines are becoming increasingly widespread and complex. Some operating procedures and tools pose a series of safety hazards and violate regulations. Lifting the crossbar to the proper position is crucial for inspecting, maintaining, and replacing insulator strings. However, existing tools are connected via shackles to extend the lever arm, which in turn is connected to a hoist to lift the crossbar. Extending the lever arm by installing shackles is an illegal use of equipment and improper operation, increasing work difficulty, reducing efficiency, and posing safety risks. Summary of the Invention

[0003] The technical problem to be solved and the technical task proposed by this invention is to improve and refine existing technical solutions, and to provide a universal single-ear lifting plate tool to reduce working difficulty and improve working efficiency. To this end, this invention adopts the following technical solution.

[0004] A universal single-ear lifting connecting plate tool includes a main body, a flat ear bolt assembly and a connecting buckle. The left side of the main body is connected and fixed to the connecting plate through the flat ear bolt assembly. The connecting buckle is detachably connected to the connecting hole on the right side of the main body. The connecting buckle is used to connect to a lever hoist. Through the combination of the main body, the flat ear bolt assembly and the connecting buckle, a safe and efficient connecting plate lifting system is constructed. The flat ear bolt assembly on the left side of the main body can firmly connect the connecting plate to ensure that the connecting plate and the tool are tightly combined during the lifting process, and there will be no loosening, displacement and other problems, thereby ensuring the safety of the operation. The detachable connecting buckle on the right side is used to connect to the lever hoist, which facilitates the assembly and disassembly of the tool and the lever hoist, allowing the operator to quickly switch the tool configuration in different working scenarios. Compared with the traditional shackle connection, it reduces the difficulty of work and improves work efficiency. Moreover, the detachable structure is easy to maintain and replace, which can improve the service life and adaptability of the tool.

[0005] As a preferred technical approach, the main body comprises a fixing plate and an ear plate. The fixing plate is vertically positioned at the front left end of the connecting plate. The fixing plate is provided with two bolt holes extending left and right, corresponding to the fixing holes in the connecting plate. The fixing plate is secured to the connecting plate via two sets of flat ear bolt assemblies. The fixing plate and ear plate are arranged in an L-shape, and the main body is connected to the connecting plate to be lifted via a double-bolt connection structure. This ensures more uniform force on the connecting plate, effectively distributing the pulling force during the lifting process, preventing damage to the connecting plate or the connecting parts due to excessive force at a single point, and enhancing the reliability and stability of the connection.

[0006] As a preferred technical approach, the upper and lower ends of the left end of the lug plate are both aligned with the fixed plate. The upper end of the lug plate is a horizontal end surface, and the lower end of the lug plate is an upwardly inclined surface from left to right. A fully rounded transition structure is formed between this inclined surface and the right side of the horizontal end surface of the upper end of the lug plate. The connecting hole and the fully rounded transition structure are coaxial. This structure provides the lug plate with higher support structural strength. The inclined surface and the rounded transition structure effectively alleviate stress concentration, preventing component fatigue and fracture caused by excessive stress accumulation, ensuring the tool's durability under high-intensity operations. The coaxiality of the connecting hole and the fully rounded transition structure ensures relatively even force transmission when the connecting buckle is subjected to stress, improving the stability of the overall structure.

[0007] As a preferred technical means: two horizontal triangular reinforcing ribs are provided between the fixing plate and the ear plate. The reinforcing ribs include an upper rib and a lower rib. The upper end of the upper rib is flush with the upper end surface of the fixing plate and the ear plate, and the lower rib is provided between the upper and lower bolt holes. As a supporting structure, the reinforcing ribs can significantly enhance the rigidity of the main body. Especially when subjected to large tensile forces, the upper and lower ribs can effectively prevent the relative deformation between the fixing plate and the ear plate, maintain the original shape of the main structure, ensure the precise alignment of the connection parts, and thus ensure the smooth progress of the joint plate lifting operation. The triangular structure of the reinforcing ribs has good mechanical stability and can achieve a large strength increase with less material consumption. While reducing the weight of the tool, it does not reduce its performance, which is in line with the structural concept of lightweight and efficient tools.

[0008] As a preferred technical approach, the left-right length of the upper rib plate is 0.35-0.45 times the left-right length of the ear plate, and the left-right length of the lower rib plate is 0.48-0.60 times the left-right length of the ear plate. By precisely optimizing the length ratio of the upper and lower rib plates, the structural strength of the tool is further enhanced, achieving better load-bearing capacity, thereby improving overall stability and durability.

[0009] As a preferred technical means: the connecting buckle includes a U-shaped ring and a connecting bolt. Bolt holes are provided at both ends of the U-shaped ring, one of which is a threaded hole. The head of the connecting bolt is provided with an external thread corresponding to the threaded hole of the U-shaped ring. The connecting bolt passes through the bolt hole at one end of the U-shaped ring and the connecting hole of the ear plate in sequence, and then is threadedly connected and fixed with the threaded hole at the other end of the U-shaped ring. The connecting buckle adopts a detachable combination structure of the U-shaped ring and the connecting bolt, which is both convenient and reliable, making the connecting buckle easy and quick to operate when connected to the ear plate. The operator can complete the assembly without the help of complex tools. Compared with other simple connection methods, the threaded connection method has higher tightness and can withstand large pulling force without loosening, ensuring reliable force transmission between the lever hoist and the main body, and ensuring safe and efficient lifting operations of the connecting plate.

[0010] As a preferred technical means, a spacer sleeve of equal thickness is provided on each of the connecting bolts, located on both sides of the ear plate and between the two ends of the U-shaped ring. The setting of the spacer sleeve of equal thickness makes the connection tighter and avoids problems such as noise, wear or even connection failure caused by component shaking or collision during operation.

[0011] As a preferred technical means, the connecting bolt has a handle at its tail, and the handle has a through hole perpendicular to the axis of the connecting bolt. When installing or removing the connecting buckle, the operator can easily rotate the connecting bolt through the handle, and the through hole allows for easy insertion of a torque wrench to tighten the bolt.

[0012] As a preferred technical means: the main body is made of 7A04 aluminum, and the flat ear bolt assembly is made of 40Cr. 7A04 aluminum has a high strength-to-weight ratio. While ensuring the strength of the main structure, it can significantly reduce the overall weight of the tool, making it easier for operators to carry and transport it. It is particularly suitable for scenarios such as aerial work that require high portability of the tool. At the same time, this material has a certain degree of corrosion resistance and can resist erosion by water vapor, salt, and other factors in the working environment, extending the service life of the tool. The flat ear bolt assembly is made of 40Cr. After heat treatment, 40Cr has excellent strength, hardness, and tensile strength. When connecting the connecting plates, it can withstand huge tensile forces without deformation or breakage, ensuring the reliability of the connection between the connecting plate and the main body, and providing a solid foundation for the entire connecting plate lifting operation.

[0013] As a preferred technical approach, the fixing plate, ear plate, and reinforcing rib are integrally molded. This integral molding structure significantly enhances the overall strength and stability of the structure, providing strong integrity. When the tool is subjected to tensile forces during the lifting process of the connecting plates, it effectively avoids the risk of structural deformation, loosening, or even breakage caused by weak connection points, ensuring the safety and reliability of the connecting plate lifting operation.

[0014] As a preferred technical means: the flat ear bolt assembly includes a bolt, a nut, and a gasket. After the bolt passes through the connecting plate and the fixing plate, the gasket is put on and then tightened by the nut. After the bolt passes through the connecting plate and the fixing plate, the gasket can increase the contact area and reduce the pressure, preventing the surface of the connecting plate and the fixing plate from being indented or damaged due to excessive bolt tightening force, thereby protecting the surface integrity of the component; the nut tightens the bolt through threaded engagement, achieving reliable clamping of the connecting plate and the fixing plate. The three work together to form a stable connection structure, ensuring the synchronous movement of the connecting plate and the main body during the lifting process, and avoiding safety hazards such as loosening and falling off.

[0015] Beneficial Effects: The combination of the main body, flat lug bolt assembly, and connecting buckle constructs a safe and efficient connecting plate lifting system. The flat lug bolt assembly on the left side of the main body securely connects to the connecting plate, ensuring a tight fit between the connecting plate and the tool during lifting, preventing loosening or displacement and guaranteeing operational safety. The detachable connecting buckle on the right side connects to a lever hoist, facilitating the assembly and disassembly of the tool and hoist. This allows operators to quickly switch tool configurations in different work scenarios. Compared to traditional shackle connections, this reduces work difficulty and improves efficiency. Furthermore, the detachable structure facilitates maintenance and replacement, extending the tool's lifespan and adaptability. The main body is made of 7A04 aluminum, offering a high strength-to-weight ratio. While maintaining the structural strength, it significantly reduces the overall weight of the tool, making it easy for operators to carry and transport, especially suitable for high-altitude operations and other scenarios requiring high tool portability. The flat lug bolt assembly, made of 40Cr material, possesses excellent strength, hardness, and tensile strength. It can withstand enormous tensile forces when connecting the connecting plate without deformation or breakage, ensuring the reliability of the connection between the connecting plate and the main body and providing a solid foundation for the entire connecting plate lifting operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0017] Figure 2 This is a top view of the structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the main structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the flat ear bolt assembly connection in this invention.

[0020] In the figure: 1. Main body; 2. Flat ear bolt assembly; 3. Connecting buckle; 4. Linking plate to be lifted; 101. Fixing plate; 102. Ear plate; 103. Upper rib plate; 104. Lower rib plate; 201. Bolt; 202. Nut; 203. Gasket; 301. U-shaped ring; 302. Connecting bolt; 303. Spacer sleeve; 30201. Handle; 30202. Through hole. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1 like Figure 1-4As shown, a universal single-ear lifting connecting plate tool includes a main body 1, a flat ear bolt assembly 2 and a connecting buckle 3. The left side of the main body 1 is connected and fixed to the connecting plate by the flat ear bolt assembly 2. The connecting buckle 3 is detachably connected to the connecting hole on the right side of the main body 1. The connecting buckle 3 is used to connect to a lever hoist. The main body 1 includes a fixed plate 101 and an ear plate 102. The fixed plate 101 is vertically arranged at the front left end of the connecting plate. The fixed plate 101 and the ear plate 102 are arranged in an L shape. The fixed plate 101 is provided with two bolt holes extending left and right corresponding to the fixing holes on the connecting plate. The fixed plate 101 is connected and fixed to the connecting plate by two sets of flat ear bolt assemblies 2. The main body 1 is connected and fixed to the connecting plate 4 to be lifted by a double bolt connection structure, so that the force on the connecting plate is more uniform. The flat ear bolt assembly 2 includes a bolt 201, a nut 202 and a gasket 203. After the bolt 201 passes through the connecting plate and the fixed plate 101, the gasket 203 is put on and then tightened by the nut 202. After the bolt 201 passes through the connecting plate and the fixed plate 101, the gasket 203 can increase the contact area and reduce the pressure to prevent damage to the surface of the connecting plate and the fixed plate 101 due to excessive tightening force of the bolt 201. The nut 202 tightens the bolt 201 through threaded cooperation to achieve reliable clamping of the connecting plate and the fixed plate 101. The connecting buckle 3 includes a U-shaped ring 301 and a connecting bolt 302. Bolt holes are provided at both ends of the U-shaped ring 301, one of which is a threaded hole. The head of the connecting bolt 302 is provided with an external thread corresponding to the threaded hole of the U-shaped ring 301. The connecting bolt 302 passes through the bolt hole at one end of the U-shaped ring 301 and the connecting hole of the ear plate 102 in turn, and then is threadedly connected and fixed with the threaded hole at the other end of the U-shaped ring 301. The connecting buckle 3 adopts a detachable combination structure of the U-shaped ring 301 and the connecting bolt 302, which is both convenient and reliable. The operator can complete the assembly without the aid of complex tools. The threaded connection method has higher tightness than other simple connection methods, ensuring that the lifting operation of the connecting plate is safe and efficient.

[0023] To ensure that the lug plate 102 has a high support structural strength, the upper and lower ends of the left end of the lug plate 102 are aligned with the fixed plate 101. The upper end of the lug plate 102 is a horizontal end surface, and the lower end of the lug plate 102 is an upward inclined surface from left to right. A fully rounded transition structure is formed between this inclined surface and the right side of the horizontal end surface of the upper end of the lug plate 102. The connecting hole and the fully rounded transition structure are coaxial. This structure enables the lug plate 102 to obtain a high support structural strength. The inclined surface and the rounded transition structure can effectively alleviate stress concentration, prevent component fatigue and fracture caused by excessive stress accumulation, and ensure the durability of the tool under high-intensity operations. The connecting hole and the fully rounded transition structure are coaxial, ensuring that the force is transmitted more evenly when the connecting buckle 3 is subjected to force, improving the stability of the overall structure.

[0024] In order to better improve the structural strength, two horizontal triangular reinforcing ribs are provided between the fixed plate 101 and the ear plate 102. The reinforcing ribs include an upper rib 103 and a lower rib 104. The upper end of the upper rib 103 is flush with the upper end surfaces of the fixed plate 101 and the ear plate 102, and the lower rib 104 is provided between the upper and lower bolt holes. As a supporting structure, the reinforcing ribs can significantly enhance the rigidity of the main body 1. Especially when subjected to large tensile forces, the upper rib 103 and the lower rib 104 can effectively prevent the relative deformation between the fixed plate 101 and the ear plate 102, maintain the original shape of the main body 1 structure, ensure the precise alignment of the connection parts, and thus ensure the smooth progress of the joint plate lifting operation. The triangular structure of the reinforcing ribs has good mechanical stability, can better improve the structural strength, can achieve a large strength increase with less material consumption, while reducing the weight of the tool without reducing its performance, in line with the structural concept of lightweight and efficient tools.

[0025] To further enhance the structural strength of the main body 1, the left-right length of the upper rib plate 103 is 0.4 times the left-right length of the ear plate 102, and the left-right length of the lower rib plate 104 is 0.5 times the left-right length of the ear plate 102. By precisely optimizing the length ratio of the upper rib plate 103 and the lower rib plate 104, the structural strength of the main body 1 is further enhanced, achieving better load-bearing capacity, thereby improving the overall stability and durability.

[0026] In this example, the main body 1 is made of 7A04 aluminum, and the flat lug bolt assembly 2 is made of 40Cr. 7A04 aluminum has a high strength-to-weight ratio, significantly reducing the overall weight of the tool while ensuring the structural strength of the main body 1, making it easier for operators to carry and transport. It is particularly suitable for scenarios such as aerial work where tool portability is a high priority. Furthermore, this material exhibits a certain degree of corrosion resistance, resisting erosion by moisture, salt, and other factors in the operating environment, extending the tool's service life. The flat lug bolt assembly 2 is made of 40Cr, which, after heat treatment, exhibits excellent strength, hardness, and tensile strength. It can withstand significant tensile forces when connecting the connecting plates without deformation or fracture, ensuring the reliability of the connection between the connecting plates and the main body 1 and providing a solid foundation for the entire connecting plate lifting operation.

[0027] In this example, the fixing plate 101, the ear plate 102, and the reinforcing ribs are integrally cast. This integral casting reduces mass production costs and significantly enhances the overall strength and stability of the structure. This strong integrity effectively prevents deformation, loosening, and even breakage caused by weak connection points when the tool is subjected to the tensile forces during the joint plate lifting process, ensuring the safety and reliability of the joint plate lifting operation.

[0028] In this example, the nut 202 of the flat lug bolt assembly 2 is a lock nut.

[0029] In use, the main body 1 and the connecting plate 4 to be lifted are securely installed using two sets of flat-ear bolt assemblies 2. One end of the lever hoist is reliably connected to the connecting buckle 3 on the main body 1, and the other end of the lever hoist is connected to the front connecting plate of the insulator string. When lifting the connecting plate 4, the operator operates the lever hoist, and the pulling force generated by the lever hoist acts between the main body 1 and the front connecting plate of the insulator string, shortening the distance between the main body 1 and the front connecting plate of the insulator string, thereby achieving a smooth lifting of the connecting plate 4. This effectively solves the problems of low lifting efficiency and high safety risks caused by mismatched tools or inconvenient operation in traditional connecting plate lifting methods. It can be applied to replacing insulator strings by lifting the connecting plate 4.

[0030] This tool, through the combination of main body 1, flat lug bolt assembly 2 and connecting buckle 3, constructs a safe and efficient plate lifting system. The flat lug bolt assembly 2 on the left side of main body 1 can firmly connect the plate to be lifted 4, ensuring that the plate to be lifted 4 is tightly connected to the tool during the lifting process, without loosening or displacement, thus ensuring the safety of the operation. Compared with traditional shackle connections, it reduces the difficulty of the work, improves the work efficiency, and the detachable structure makes maintenance and replacement convenient, which can improve the service life and adaptability of the tool.

[0031] In this example, the height of the fixing plate 101 is 336mm, the thickness of the fixing plate 101 and the ear plate 102 is 30mm, the thickness of the reinforcing rib is 15mm, and the center distance between the two sets of flat ear bolt assemblies 2 is 200mm. The U-ring 301 adopts the 20T specification.

[0032] Example 2 The difference from the above example is that Figure 2 As shown, the tail of the connecting bolt 302 is provided with a handle 30201, and the handle 30201 has a through hole 30202 perpendicular to the axis of the connecting bolt 302. When installing or removing the connecting buckle 3, the operator can easily rotate the connecting bolt 302 through the handle 30201. The through hole 30202 allows for easy insertion of a torque wrench to tighten the bolt 201. Compared to conventional connecting bolts 302, this is more convenient to use.

[0033] Example 3 Unlike Examples 1 and 2 above, such as Figure 2As shown, a spacer sleeve 303 of equal thickness is provided on each of the front and rear sides of the ear plate 102 and between the two ends of the U-shaped ring 301 on the connecting bolt 302. The spacer sleeve 303 makes the connection tighter and avoids problems such as noise, wear or even connection failure caused by component shaking or collision during operation. The spacer sleeve 303 can also evenly distribute the shear force on the connecting bolt 302, preventing the bolt 201 from breaking due to excessive local stress, further improving the stability and reliability of the connection and extending the service life of the tool.

[0034] Example 4 Unlike Examples 1, 2, or 3 above, the fixing plate 101, ear plate 102, and reinforcing rib are machined into a single unit. With fewer tools required, the machined structure eliminates the need for molds, resulting in lower costs.

[0035] The above-described general-purpose single-ear lifting plate tool is a specific embodiment of the present invention, demonstrating the substantial features and progress of the present invention. Based on actual usage needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc., can be made to it, all of which are within the scope of protection of this solution.

Claims

1. A universal single-ear lifting and connecting plate tool, characterized in that: It includes a main body, a flat ear bolt assembly and a connecting buckle. The left side of the main body is connected and fixed to the connecting plate through the flat ear bolt assembly. The connecting buckle is detachably connected to the connecting hole on the right part of the main body. The connecting buckle is used to connect to a lever hoist.

2. A universal single-ear lifting and connecting plate tool according to claim 1, characterized in that: The main body includes a fixing plate and an ear plate. The fixing plate is vertically arranged at the left end of the front side of the connecting plate. The fixing plate is provided with two bolt holes extending left and right corresponding to the fixing holes on the connecting plate. The fixing plate is connected and fixed to the connecting plate through two sets of flat ear bolt assemblies.

3. A universal single-ear lifting and connecting plate tool according to claim 2, characterized in that: The upper and lower ends of the left end of the ear plate are aligned with the fixed plate, the upper end of the ear plate is a horizontal end face, and the lower end of the ear plate is an upward inclined surface from left to right. There is a full-round transition structure between the inclined surface and the right side of the horizontal end face of the upper end of the ear plate, and the connecting hole is coaxial with the full-round transition structure.

4. A universal single-ear lifting and connecting plate tool according to claim 2, characterized in that: Two horizontal triangular reinforcing ribs are arranged between the fixing plate and the ear plate, and the reinforcing ribs include an upper rib and a lower rib. The upper end of the upper rib is flush with the upper end surface of the fixing plate and the ear plate, and the lower rib is arranged between the upper and lower bolt holes.

5. A universal single-ear lifting and connecting plate tool according to claim 4, characterized in that: The left-right length of the upper rib plate is 0.35-0.45 times of the left-right length of the ear plate, and the left-right length of the lower rib plate is 0.48-0.60 times of the left-right length of the ear plate.

6. A universal single-ear lifting and connecting plate tool according to claim 2, characterized in that: The connecting buckle includes a U-shaped ring and a connecting bolt. Bolt holes are provided at both ends of the U-shaped ring, one of which is a threaded hole. The head of the connecting bolt is provided with an external thread corresponding to the threaded hole of the U-shaped ring. The connecting bolt passes through the bolt hole at one end of the U-shaped ring and the connecting hole of the ear plate in sequence, and then is threadedly connected and fixed with the threaded hole at the other end of the U-shaped ring.

7. A universal single-ear lifting and connecting plate tool according to claim 6, characterized in that: The connecting bolt is provided with a spacing sleeve of equal thickness between the front and rear sides of the ear plate and the two ends of the U-shaped ring.

8. A universal single-ear lifting and connecting plate tool according to claim 6, characterized in that: The tail of the connecting bolt is provided with a handle, and the handle is provided with a through hole which is perpendicular to the axial direction of the connecting bolt.

9. A universal single-ear lifting and connecting plate tool according to claim 1, characterized in that: The main body is made of 7A04 aluminum, and the flat ear bolt assembly is made of 40Cr.

10. A universal single-ear lifting and connecting plate tool according to claim 4, characterized in that: The fixing plate, the ear plate and the reinforcing rib plate are an integrally formed structure.

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