Link plate clamp for high-voltage transmission line

Abstract

The invention belongs to the technical field of power equipment, and discloses a yoke plate fixture for a high-voltage power transmission line, and the fixture comprises a fixture base which is provided with a yoke plate placement clamping groove for accommodating a yoke plate; the fixture suspension arms are symmetrically arranged on the two sides of the fixture base; the suspension arm fixing column, the fixture suspension arm and the fixture base are all provided with connecting holes, and the suspension arm fixing column simultaneously penetrates through the connecting holes of the fixture suspension arm and the fixture base, so that the fixture suspension arm can rotate relative to the fixture base; the movable pins are detachably mounted on the clamp suspension arm; according to the invention, through flexible position selection of the movable pin in different mounting holes in the clamp suspension arm, adaptation of the yoke plate in the height direction is realized; and meanwhile, the adaptation of the yoke plates in the width direction is realized, so that a single fixture can accurately and stably fix the yoke plates with different boundary dimensions, the number and types of fixtures needing to be carried in operation are remarkably reduced, and the equipment cost and the operation and maintenance complexity are reduced.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a connecting plate clamp for high-voltage transmission lines. Background Technology

[0002] High-voltage transmission lines are the backbone of the power system, and their safe and stable operation is crucial. Connecting plates, as key connecting hardware on transmission line towers, are used to collect and distribute the load of multiple insulator strings; their reliability directly affects the safety of the entire line. During routine maintenance, repair, or replacement work on transmission lines, it is often necessary to hoist, fix, or adjust the connecting plates, either entirely or partially. In such cases, specialized connecting plate clamps are required to complete the work safely and efficiently.

[0003] Existing connector clamps have significant limitations. First, there is a wide variety of connector specifications and sizes in transmission lines, with significant differences in width, height, and mounting hole positions for connectors of different voltage levels and tower types. Traditional connector clamps are mostly fixed structures, and one type of clamp typically only fits one or a few connector specifications. This necessitates maintenance units to equip themselves with a large number of clamps of different specifications, increasing procurement costs and causing significant inconvenience for on-site transport, management, and retrieval. Furthermore, incorrect selection during emergency repairs can easily lead to delays.

[0004] Secondly, traditional clamps have poor adaptability; their clamping mechanisms often have limited adjustment ranges or are not adjustable at all. When encountering non-standard or slightly dimensionally different connecting plates, they are prone to problems such as insecure clamping or inability to install, posing significant safety hazards. Fixed-structure clamps cannot adaptively adjust their angles during hoisting, which may lead to uneven stress and cause additional bending stress on the clamps or connecting plates. Over long-term use, this can easily cause equipment damage or fatigue fracture.

[0005] Therefore, there is an urgent need in this field for a high-voltage transmission line connecting plate clamp that is versatile, easy to adjust, reliable in clamping, and adaptable to the load angle, in order to solve the problems of poor adaptability, inconvenient operation, and insufficient safety in the existing technology. Summary of the Invention

[0006] The main objective of this invention is to provide a connecting plate clamp for high-voltage transmission lines, aiming to solve the problem that the U-shaped structure of the extended shackle is not tightly connected to the connecting plate, and the load is transferred only through point contact or line contact, resulting in uneven stress distribution and local stress concentration, which in turn leads to plastic deformation or fracture risks, threatening the safe operation of the transmission line. In high-altitude operations, shackles are prone to displacement or slippage due to wind loads, swaying, and other factors. Changes in conductor tension may cause connection point failure, leading to tool detachment accidents and posing a significant safety threat to personnel and equipment.

[0007] To achieve the above-mentioned objectives, the first aspect of this invention provides a connecting plate clamp for high-voltage transmission lines, comprising: A clamp base, wherein the clamp base is provided with a clamp slot for accommodating the clamp plate; The clamp lifting arms are symmetrically arranged on both sides of the clamp base; The boom fixing column has connection holes on both the clamp boom and the clamp base. The boom fixing column passes through the connection holes of both the clamp boom and the clamp base, allowing the clamp boom to rotate relative to the clamp base. Multiple movable pins are detachably mounted on the clamping arm, and the mounting holes at different positions on the clamping arm can be selected to accommodate connecting plates of different heights; A connecting plate lateral fixer is provided. The clamp base is provided with a first side plate and a second side plate. The first side plate and the second side plate are respectively located on both sides of the connecting plate placement slot. The second side plate is provided with a second mounting hole. The connecting plate lateral fixer passes through the clamp base and connects to the second mounting hole. By adjusting the connecting plate lateral fixer, the distance between the first side plate and the second side plate can be changed. The coordinated adjustment of the movable pin and the lateral fixing device of the connecting plate enables universal adaptation to connecting plates of different sizes.

[0008] Furthermore, the boom fixing column includes an optical axis and a threaded shaft, wherein the diameter of the optical axis is larger than the diameter of the threaded shaft; The clamping arm is provided with corresponding through holes and threaded holes; The large-diameter optical axis passes sequentially through the through hole of the clamp arm and the mounting hole of the clamp base, while the small-diameter threaded shaft is screwed into and fixed with the threaded hole of the clamp arm.

[0009] Furthermore, the clamp arm is provided with multiple pairs of mounting holes along its length to form a multi-position adjustment structure.

[0010] Furthermore, the connecting plate side fastener is a threaded fastener. One end of the connecting plate side fastener is rotatably connected to the second mounting hole on the second side plate. The thread on the side wall of the connecting plate side fastener matches the internal thread of the mounting hole of the clamp base. By adjusting the screw-in depth of the connecting plate side fastener, the clamping force on the side of the connecting plate is changed by pushing the second side plate.

[0011] Furthermore, the movable pin and the clamping arm form a lifting hole, which is used as a lifting connection point.

[0012] Furthermore, the clamp boom can rotate arbitrarily within a ±30° angle range on the vertical line around the boom fixing column via the boom fixing column.

[0013] Furthermore, the movable pin is provided with a plurality of mounting and positioning holes, and fixed pin threads are installed in the mounting and positioning holes.

[0014] Furthermore, the clamp base, clamp boom, boom fixing column, connecting plate lateral fixer, and movable pin are all made of high-strength materials; The high-strength material is a high-strength aluminum alloy or alloy steel.

[0015] Furthermore, the width of the connecting plate placement slot is adjustable from 50mm to 200mm.

[0016] Furthermore, the clamp base has strip-shaped weight-reducing grooves on both sides.

[0017] Beneficial effects: 1. The high-voltage transmission line connecting plate clamp of the present invention achieves adaptation in the height direction of the connecting plate through the flexible selection of different mounting holes on the clamp boom by the movable pin; at the same time, it achieves adaptation in the width direction of the connecting plate by adjusting the distance between the first side plate and the second side plate through the connecting plate lateral fixing device, so that a single clamp can accurately and stably fix a variety of connecting plates of different shapes and sizes. It fundamentally solves the problem of poor adaptability caused by the single specification of traditional clamps, realizes "one clamp for multiple uses", significantly reduces the number and types of clamps that need to be carried during operation, and reduces equipment costs and maintenance complexity.

[0018] 2. The high-voltage transmission line connector clamp of the present invention uses threaded fasteners for the lateral fixing of the connector, which can achieve lateral clamping and loosening of the connector by simple screwing; the insertion, removal and repositioning of the movable pin does not require complicated tools. This allows for rapid adaptation and adjustment of connectors of different sizes on site, greatly shortening preparation time, making it suitable for high-altitude and emergency operation environments, and effectively improving maintenance and repair efficiency.

[0019] 3. The high-voltage transmission line connecting plate clamp of the present invention allows the clamp boom to rotate arbitrarily within a vertical angle range of ±30° via the boom fixing column. During hoisting, the clamp can automatically adapt to the load condition, avoiding additional bending moments caused by rigid connections, ensuring that the stress is always in the optimal state, greatly improving the safety of hoisting operations and the service life of the clamp. Secondly, the movable pin is provided with mounting positioning holes and can be fitted with pin threads, effectively preventing accidental detachment during operation. All major load-bearing components are made of high-strength aluminum alloy or alloy steel, ensuring sufficient mechanical strength and durability.

[0020] 4. The high-voltage transmission line connecting plate clamp of the present invention effectively reduces the overall weight of the clamp while ensuring structural strength and rigidity by creating strip-shaped weight-reducing grooves on both sides of the clamp base. This makes it easier for operators to climb and operate at heights, reducing labor intensity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-voltage transmission line connecting plate clamp according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the installation and use of a large-sized connecting plate of a high-voltage transmission line connecting plate clamp according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation and use of a small-sized connecting plate of a high-voltage transmission line connecting plate clamp according to an embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the side fixing device of the connecting plate clamp for high-voltage transmission lines according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the composite curve of a high-voltage transmission line connecting plate clamp according to an embodiment of the present invention, located on the inner wall of the clamp boom.

[0022] in: 1. Connecting plate; 2. Fixture base; 21. Connecting plate placement slot; 22. First side plate; 23. Second side plate; 24. Strip-shaped weight reduction groove; 3. Fixture boom; 4. Boom fixing column; 5. Connecting plate lateral fixing device; 6. Movable pin; 7. Compound curve.

[0023] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Example 1 Reference Figures 1-4 An embodiment of the present invention provides a connecting plate clamp for high-voltage transmission lines, comprising: The clamp base 2 is provided with a connecting plate placement slot 21 for accommodating the connecting plate 1; The clamp lifting arms 3 are symmetrically arranged on both sides of the clamp base 2; The boom fixing column 4 has connection holes on both the clamp boom 3 and the clamp base 2. The boom fixing column 4 passes through the connection holes of both the clamp boom 3 and the clamp base 2, so that the clamp boom 3 can rotate relative to the clamp base 2. Multiple movable pins 6 are detachably mounted on the clamping arm 3, and the mounting holes at different positions on the clamping arm 3 are selected to accommodate connecting plates 1 of different heights; The connecting plate lateral fixer 5 has a first side plate 22 and a second side plate 23 on the clamp base 2. The first side plate 22 and the second side plate 23 are respectively located on both sides of the connecting plate placement slot 21. The second side plate 23 is provided with a second mounting hole. The connecting plate lateral fixer 5 passes through the clamp base 2 and is connected to the second mounting hole. By adjusting the connecting plate lateral fixer 5, the distance between the first side plate 22 and the second side plate 23 can be changed. The coordinated adjustment of the movable pin 6 and the connecting plate lateral fixation 5 enables universal adaptation to connecting plates 1 of different sizes.

[0027] In this embodiment, the connecting plate placement slot 21 is used to accommodate the connecting plate 1; the movable pin 6 is detachably mounted on the clamping arm 3 to accommodate connecting plates 1 of different heights; the connecting plate lateral fixation device 5 is set on the clamping base 2, and clamps the connecting plate 1 by adjusting the distance between the first side plate 22 and the second side plate 23. Through the coordinated adjustment of the movable pin 6 and the connecting plate lateral fixation device 5, this clamp can adapt to connecting plates 1 of different heights and widths, improving versatility and ease of operation. This reduces the need to carry multiple sizes of clamps during on-site construction, reduces costs, and improves installation efficiency and flexibility. At the same time, the coordinated adjustment ensures the stable fixation of the connecting plate 1 in the clamp, reduces the risk of falling off, and enhances safety.

[0028] The multi-position mounting holes of the movable pin 6, in conjunction with the synergistic adjustment of the connecting plate side retainer 5, can accommodate the thickness and height differences of connecting plates 1 of various specifications from 500kV to ±800kV, reducing the need for different types of tools and lowering procurement and management costs. The standardized connection point of the movable pin 6 allows for quick installation without additional tools, and the screw-in adjustment of the connecting plate side retainer 5 significantly shortens operation time. The surface contact between the clamp base 2 and the connecting plate 1 replaces the line / point contact of traditional shackles, evenly distributing the load, eliminating the risk of stress concentration, and preventing plastic deformation of the connecting plate 1.

[0029] Optionally, the boom fixing column 4 includes a light axis and a threaded shaft, wherein the diameter of the light axis is larger than the diameter of the threaded shaft; The clamping arm 3 is provided with a through hole and a threaded hole; The large-diameter optical axis passes sequentially through the through hole of the clamp arm 3 and the mounting hole of the clamp base 2, while the small-diameter threaded shaft is screwed into and fixed with the threaded hole of the clamp arm 3.

[0030] It should be noted that during installation, the optical shaft passes sequentially through the through hole of the clamp arm 3 and the mounting hole of the clamp base 2, providing primary support; the threaded shaft engages with the threaded hole of the clamp arm 3 for fixation, thus firmly connecting the clamp arm 3 to the clamp base 2. This allows the clamp arm 3 to rotate on the optical shaft while simultaneously securing it via the threaded shaft. The combined structure of the optical shaft and threaded shaft provides a stable connection and reliable load-bearing capacity. The optical shaft bears the main load, while the threaded shaft provides the tightening force, preventing the clamp arm 3 from loosening during operation. This facilitates disassembly and maintenance while ensuring the safety and durability of the clamp under high-pressure environments.

[0031] Optionally, the clamp arm 3 is provided with multiple pairs of mounting holes along its length to form a multi-position adjustment structure.

[0032] It should be noted that multiple pairs of mounting holes form a multi-position adjustment structure. The movable pin 6 can be inserted into different mounting holes according to the height of the connecting plate 1. This multi-position adjustment structure enhances the versatility of the clamp, allowing it to accommodate various sizes of connecting plates 1 without replacing parts, simplifying the operation steps and improving construction efficiency. The lifting point position can be adjusted according to the center of gravity of the connecting plate 1 to ensure force balance during lifting and reduce the risk of tilting or swaying of the connecting plate 1.

[0033] Optionally, the connecting plate side retainer 5 is a threaded fastener. One end of the connecting plate side retainer 5 is rotatably connected to the second mounting hole on the second side plate 23. The thread on the side wall of the connecting plate side retainer 5 matches the internal thread of the mounting hole of the clamp base 2. By adjusting the screw-in depth of the connecting plate side retainer 5, the clamping force on the side of the connecting plate 1 is changed by pushing the second side plate 23.

[0034] It should be noted that threaded fasteners, such as screws or bolts, have one end rotatably connected to the second mounting hole on the second side plate 23 via a bearing, while the other end is screwed into the threaded hole on the clamp base 2. By turning the connecting plate lateral retainer 5, its screw-in depth is changed, thereby pushing the second side plate 23 towards the first side plate 22 and adjusting the clamping force. The lateral clamping force can be precisely controlled by adjusting the screw-in depth, ensuring that the connecting plate 1 is firmly fixed in the slot. This avoids the use of complex tools, is easy to operate, and the threaded connection has self-locking properties, preventing loosening in a vibration environment, thus improving the reliability and safety of the clamp.

[0035] In some embodiments, the inner side of the clamping arm 3 is provided with a surface that matches the contour of the connecting plate 1.

[0036] It should be noted that the inner surface of the clamping boom 3 is machined using a CNC machine tool, with a surface roughness Ra≤3.2μm. The contour design ensures that the boom 3 and the connecting plate 1 form a surface contact, resulting in a more uniform load distribution and reducing local stress peaks. The curved fit reduces the lateral displacement of the connecting plate 1 during hoisting, improving operational stability.

[0037] Optionally, the movable pin 6 and the clamping arm 3 form a lifting hole, which is used as a lifting connection point.

[0038] It should be noted that this lifting hole is used to connect lifting equipment such as wire ropes or hooks. The lifting hole formed by the movable pin 6 and the clamp boom 3 provides a stable lifting connection point, facilitating quick connection with external lifting equipment. This design simplifies the lifting process, reduces the need for additional accessories, and improves lifting efficiency. Furthermore, the detachable nature of the movable pin 6 allows for the replacement of pins of different specifications according to load requirements, enhancing adaptability.

[0039] Optionally, the clamp boom 3 can rotate arbitrarily within a ±30° angle range on the vertical line around the boom fixing column 4.

[0040] It should be noted that the rotation angle range of the clamping boom 3 around the boom fixing column 4 is ±30°, and the rotation axis is located on the center line of the clamping base 2. During rotation, the clamping boom 3 remains parallel to the connecting plate 1, ensuring that the direction of the lifting force is always perpendicular to the surface of the connecting plate 1. The ±30° rotation angle of the clamping boom 3 allows the lifting equipment to be placed on both sides of the connecting plate 1 for lateral lifting, solving the problem of not being able to work directly above the narrow space of the tower. After rotation, the clamping boom 3 still remains parallel to the connecting plate 1, avoiding uneven loading or twisting of the connecting plate 1 due to angular deviation.

[0041] Optionally, the movable pin 6 is provided with a plurality of mounting and positioning holes, and a fixed pin thread is installed in the mounting and positioning holes.

[0042] Optionally, the clamp base 2, clamp boom 3, boom fixing column 4, connecting plate lateral fixing device 5, and movable pin 6 are all made of high-strength materials. The high-strength materials are high-strength aluminum alloy or alloy steel.

[0043] It should be noted that the clamp base 2, clamp boom 3, boom fixing column 4 and connecting plate side fixing device 5 are all made of 7075-T6 aluminum alloy; the movable pin 6 is made of 42CrMo alloy steel with nitriding treatment and a hardness of HRC58–62.

[0044] The use of 7075-T6 aluminum alloy reduces the overall weight of the clamp while ensuring strength, making it easier for workers at heights to operate. Material selection and surface treatment processes significantly improve the long-term reliability of the clamp in harsh environments such as humidity and salt spray.

[0045] Optionally, the width of the connecting plate placement slot 21 is adjustable from 50mm to 200mm.

[0046] It should be noted that the adjustable width range of 50mm to 200mm allows the clamp to be adapted to various sizes of connecting plates 1, providing flexible fixation from narrow to wide. This enhances the clamp's versatility, reduces the need for specialized tools, lowers inventory costs, and at the same time, its wide adjustment range and strong adaptability improve the convenience of field application.

[0047] Optionally, the clamp base 2 has strip-shaped weight-reducing grooves 24 on both sides. It should be noted that the strip-shaped weight-reducing groove 24 effectively reduces the overall weight of the clamp, making it easier for construction personnel to carry and operate, and reducing labor intensity. At the same time, the design of the strip-shaped weight-reducing groove 24 optimizes stress distribution, avoids local stress concentration, maintains the rigidity and durability of the clamp base 2, and conforms to lightweight design.

[0048] Example 2 Further improvements were made based on Example 1, as detailed in the following document. Figure 4 The inner wall of the slot 21 for placing the connecting plate is designed as a guide slope, which smoothly transitions from the slot opening to the bottom at a 5° angle. This structure can automatically guide the connecting plate 1 for centering during the initial stage of hoisting operations, effectively avoiding jamming caused by manual placement deviations and significantly improving the installation efficiency of the connecting plate 1. The bottom of the slot is further provided with a 0.5mm deep diamond-shaped raised anti-slip texture, which is CNC milled to increase the static friction coefficient between the connecting plate 1 and the bottom of the slot, fundamentally preventing horizontal slippage of the connecting plate 1 during hoisting.

[0049] Example 3 Further improvements were made based on Example 1, see [link / reference]. Figure 5 The clamping boom 3 adopts a symmetrical arrangement on both sides of the clamping base 2. Its inner working surface uses a multi-segment composite curve 7 configuration, which can achieve optimal fit with the outer contour of the 500kV to ±800kV series connecting plate 1, forming a uniform surface contact state. After processing, the clamping boom 3 is shot peened and strengthened using S330 type cast steel shot with a process parameter of 0.45mmA strength, so that a compressive stress layer is formed on the surface. After treatment, the hardness of the working surface is stably maintained at HRC40±2, ensuring sufficient surface hardness while maintaining good toughness. This composite curve design, combined with the strengthening process, increases the contact area between the clamping boom 3 and the connecting plate 1 by about 60% compared with the traditional planar design, significantly reducing contact stress and improving stability during the lifting process, effectively preventing the connecting plate 1 from twisting or shifting during lifting.

[0050] Instructions: When using this high-voltage transmission line connecting plate clamp, first make pre-adjustments based on the estimated dimensions of the connecting plate 1 to be replaced or maintained: the operator can first loosen the connecting plate side fixing device 5 so that the distance between the first side plate 22 and the second side plate 23 on the clamp base 2, i.e. the width of the connecting plate placement slot 21, is slightly larger than the width of the connecting plate 1. Its adjustable range is usually between 50mm and 200mm to accommodate most specifications; at the same time, according to the thickness or height of the connecting plate 1, pre-select the corresponding mounting holes on the clamp arm 3, and insert the movable pin 6 into one of the pair of mounting holes. To ensure safety, a pin thread can be inserted into the mounting positioning hole of the movable pin 6 to prevent it from accidentally falling off. After preparation, place the connecting plate 1 securely in the connecting plate placement slot 21, and then tighten the connecting plate lateral fixing device 5. During the tightening process, this threaded fastener will push the second side plate 23 towards the first side plate 22, thereby firmly clamping the connecting plate 1 from the side and achieving reliable lateral fixation. Next, connect external lifting equipment such as wire ropes and shackles to the lifting hole formed by the movable pin 6 and the clamp boom 3. During lifting, because the clamp boom 3 is hinged to the clamp base 2 through the boom fixing column 4, it can rotate freely within an angle range of ±30° around the boom fixing column 4 on the vertical line. This characteristic allows the clamp to automatically adapt to the lifting stress state, effectively avoiding structural interference and stress concentration. The entire operation process is simple and quick. Through the flexible selection of the movable pin 6 in the multi-position mounting holes of the clamp boom 3 and the stepless adjustment of the slot width by the side fixing device 5 of the connecting plate, a single clamp is finally used to universally adapt to a variety of connecting plates 1 of different sizes, which greatly improves the efficiency and safety of high-voltage transmission line maintenance operations.

[0051] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A crossarm clamp for high voltage power lines, characterized in that, The utility model relates to a kind of plate clamping device, including: Clamp base (2), the clamp base (2) is equipped with for accommodating joint plate (1) joint plate placement card slot (21); Clamp hanger arm (3), symmetrically set in the two sides of the clamp base (2); Hanger arm fixed column (4), the clamp hanger arm (3) and the clamp base (2) are all provided with connecting hole, the hanger arm fixed column (4) is simultaneously penetrated the connecting hole of the clamp hanger arm (3) and the clamp base (2), so that the clamp hanger arm (3) can rotate relative to the clamp base (2); A plurality of movable pins (6) are detachably mounted on the clamp hanger arm (3), and the movable pins (6) are adapted to joint plates (1) of different heights by selecting mounting holes at different positions on the clamp hanger arm (3); Joint plate lateral fixer (5), the clamp base (2) is provided with first side plate (22) and second side plate (23), the first side plate (22) and the second side plate (23) are located on the two sides of the joint plate placement card slot (21) respectively, the second side plate (23) is provided with second mounting hole, the joint plate lateral fixer (5) is penetrated the clamp base (2) and is connected with second mounting hole, by adjusting the joint plate lateral fixer (5), so as to change the interval between the first side plate (22) and the second side plate (23); Wherein, the universal adaptation of joint plates (1) of different sizes is realized by the cooperative adjustment of the movable pins (6) and the joint plate lateral fixer (5).

2. The high-voltage transmission line joint clevis of claim 1, wherein, The hanger arm fixed column (4) includes a smooth shaft and a threaded shaft, and the diameter of the smooth shaft is larger than that of the threaded shaft. The clamp hanger arm (3) is correspondingly provided with a through hole and a threaded hole; The smooth shaft with a large diameter penetrates the through hole of the clamp hanger arm (3) and the mounting hole of the clamp base (2) in sequence, and the threaded shaft with a small diameter is screwed with the threaded hole of the clamp hanger arm (3).

3. The high-voltage transmission line joint cleat of claim 1, wherein, The clamp hanger arm (3) is provided with a plurality of pairs of mounting holes along the length direction thereof, forming a multi-position adjustment structure.

4. The high-voltage transmission line joint cleat of claim 1, wherein, The joint plate lateral fixer (5) is a threaded fastener, one end of the joint plate lateral fixer (5) is rotatably connected in the second mounting hole on the second side plate (23), and the threads on the sidewall of the joint plate lateral fixer (5) are matched with the internal threads of the mounting hole of the clamp base (2), so as to change the clamping force on the side of the joint plate (1) by adjusting the depth of the joint plate lateral fixer (5) screwed into the second side plate (23) to push the second side plate (23).

5. The high-voltage transmission line joint cleat of claim 1, wherein, The movable pin (6) and the clamp hanger arm (3) constitute a hoisting hole for serving as a hoisting connection point.

6. The high-voltage transmission line joint cleat of claim 1, wherein, The clamp hanger arm (3) can be rotated around the hanger arm fixed column (4) within a range of ±30° on a vertical line through the hanger arm fixed column (4).

7. The high-voltage transmission line joint cleat of claim 1, wherein, A plurality of mounting positioning holes are formed in the movable pin (6), and a pin is fixedly installed in the mounting positioning hole.

8. The high-voltage transmission line joint cleat of claim 7, wherein, The clamp base (2), the clamp hanger arm (3), the hanger arm fixed column (4), the joint plate lateral fixer (5), and the movable pin (6) are all made of high-strength material. The high-strength material is high-strength aluminum alloy or alloy steel.

9. The high-voltage transmission line joint cleat of claim 1, wherein, The width of the joint plate placement card slot (21) can be adjusted within a range of 50mm to 200mm.

10. The high-voltage transmission line joint cleat of claim 1, wherein, Two sides of the fixture base (2) are provided with strip-shaped lightening grooves (24).

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