Overhead line shearing type strain gold fitting

Abstract

The application discloses an overhead line shearing type strain fitting, and relates to the technical field of electric power fittings. The overhead line shearing type strain fitting comprises a main connecting sheet and a secondary connecting sheet, connecting assemblies are arranged on the main connecting sheet and the secondary connecting sheet, left protection rods and right protection rods are arranged on the connecting assemblies, hinge holes are formed in the side end faces of the left protection rods and the right protection rods, the left protection rods and the right protection rods are rotatably installed through the hinge holes and hinge pins, left hinge sheets and right hinge sheets are connected to the main connecting sheet and the secondary connecting sheet through positioning holes and positioning bolts, and connecting blocks are rotatably installed on the left hinge sheets and the right hinge sheets. Through cooperation of the connecting assemblies, inner rotating plates, outer rotating plates, upper auxiliary rods, lower auxiliary rods and auxiliary assemblies, the application can effectively disperse hard tension stress, avoid generation of excessive hard tension stress due to change of tower interval, ensure stability and safety of the whole strain fitting, prolong service life and improve overall performance.

Description

Technical Field

[0001] This invention relates to the field of power fittings technology, specifically to a shear-type tension fitting for overhead lines. Background Technology

[0002] In areas with heavy icing, tension towers are more important than straight-line towers. If a tension tower suffers structural damage, crossarm displacement, or even collapse, it often triggers damage to adjacent straight-line towers, leading to a chain reaction of damage to all straight-line towers within the tension section. In extreme cases, it can affect the next tension section, and the damage only stops when a reinforced tension tower is installed. This causes significant damage to the power grid, is extremely difficult to repair, has a high cost of reconstruction, and results in prolonged power outages. It is one of the most extreme forms of icing damage to transmission lines.

[0003] Traditional fittings often rely on rigid connections or simple elastic buffers between components when the span between towers changes. This can easily lead to excessive stress concentration, causing deformation, fatigue damage, and even breakage over time. This design lacks sufficient flexibility to adapt to changes in the external environment, resulting in reduced structural safety. Furthermore, some traditional fittings only have a single buffer structure, relying on a single spring or rubber element to absorb tension, which is ineffective against complex dynamic loads. In addition, the lack of multi-stage buffering and support mechanisms makes it difficult to distribute loads during transmission, increasing localized stress and further shortening the service life of the fittings. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a shear-type tension fitting for overhead lines, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A shear-type tension fitting for overhead lines includes a main connecting piece and a secondary connecting piece. The main connecting piece and the secondary connecting piece are provided with a connecting assembly. The connecting assembly is provided with a left guard rod and a right guard rod. The side end faces of the left guard rod and the right guard rod are provided with hinge holes. The left guard rod and the right guard rod are rotatably installed through the hinge holes and hinge pins. The main connecting piece and the auxiliary connecting piece are connected by a left hinge piece and a right hinge piece through positioning holes and positioning bolts. A connecting block is rotatably installed on both the left hinge piece and the right hinge piece, and a connecting tension spring is fixedly connected between the two connecting blocks. The outer surfaces of the main connecting piece and the auxiliary connecting piece are provided with mounting screw holes. The mounting screw holes are threaded with mounting screw rods. An inner rotating plate and an outer rotating plate are rotatably mounted on the mounting screw rods. The end of the inner rotating plate away from the mounting screw rod is rotatably mounted with a lower auxiliary rod via a lower rotating shaft. The end of the outer rotating plate away from the mounting screw rod is rotatably mounted with an upper auxiliary rod via an upper rotating shaft. Both the main connecting piece and the sub-connecting piece are equipped with auxiliary components.

[0006] Preferably, both the main connecting piece and the auxiliary connecting piece are provided with hinge slots, the left hinge piece and the right hinge piece are respectively installed in the corresponding hinge slots, and the center positions of the upper auxiliary rod and the lower auxiliary rod are rotatably installed through a central pivot shaft.

[0007] Preferably, the inner rotating plate is located inside the outer rotating plate, the lower auxiliary rod and the upper auxiliary rod are arranged in a front-to-back cross pattern, and the inner rotating plate and the outer rotating plate are arranged in a V-shape.

[0008] Preferably, the connecting assembly includes a left mounting slot and a right mounting slot formed on the main connecting piece and the auxiliary connecting piece. A connecting rotating groove is formed inside the left mounting slot and the right mounting slot. A connecting rotating rod is fixedly installed inside the connecting rotating groove and a connecting torsion spring is fixedly connected inside the connecting rotating groove and outside the connecting rotating rod.

[0009] Preferably, the tail end of the left protective rod is fixedly installed with the connecting rotating rod in the left mounting slot, the tail end of the right protective rod is fixedly installed with the connecting rotating rod in the right mounting slot, the end of the connecting torsion spring in the left mounting slot away from the connecting rotating slot is fixedly connected with the left protective rod, and the end of the connecting torsion spring in the right mounting slot away from the connecting rotating slot is fixedly connected with the right protective rod.

[0010] Preferably, the auxiliary component includes two auxiliary fixed plates fixedly installed on the main connecting piece and the auxiliary connecting piece, an auxiliary slide rod fixedly installed between the two auxiliary fixed plates, an auxiliary slider slidably installed on the auxiliary slide rod, and an upper auxiliary frame plate and a lower auxiliary frame plate fixedly installed on the auxiliary slider.

[0011] Preferably, an upper push rod is rotatably mounted on the upper auxiliary frame plate, and an upper auxiliary fixed rod is rotatably connected to the end of the upper push rod away from the upper auxiliary frame plate; a lower push rod is rotatably mounted on the lower auxiliary frame plate, and a lower auxiliary fixed rod is rotatably mounted to the end of the lower push rod away from the lower auxiliary frame plate; and an auxiliary spring is fixedly connected to the side end face of the auxiliary slider.

[0012] Preferably, the end of the auxiliary spring away from the auxiliary slider is fixedly connected to the auxiliary fixed plate, and the upper auxiliary fixed rod, lower auxiliary fixed rod, upper push rod and lower push rod are arranged at an angle, and the upper auxiliary fixed rod and upper push rod, and the lower auxiliary fixed rod and lower push rod are all arranged in a V-shape.

[0013] This invention provides a shear-type tension fitting for overhead power lines. Compared with the prior art, it has the following advantages: 1. This invention connects the conductors at both ends of two towers together using a main connecting piece and a secondary connecting piece. When the main connecting piece and the secondary connecting piece are under tension, the tension is effectively resisted by two connecting springs on the main connecting piece and the secondary connecting piece. At the same time, the inner and outer rotating plates on the main and secondary connecting pieces rotate around the mounting screw. The linkage between the inner and outer rotating plates drives the upper and lower auxiliary rods to rotate around the central rotating shaft. The inner and outer rotating plates, the upper and lower auxiliary rods, which are in a contracted state, will directly unfold. The stable rotation of the inner and outer rotating plates, the upper and lower auxiliary rods avoids excessive tensile stress caused by changes in the span between towers, effectively improving the performance of this tension fitting. 2. In this invention, when the left and right guard rods rotate around their corresponding connecting rods, the left and right guard rods will cause the connecting torsion springs to rotate. The reaction force generated by the connecting torsion springs can increase the maximum tension that the left and right guard rods can withstand. At the same time, based on the connecting tension springs, additional support force is added to ensure that the left and right guard rods can better disperse and absorb force when subjected to external pressure, reduce the risk of damage to individual structures, and improve the overall performance and lifespan. 3. In this invention, when the inner and outer rotating plates rotate around the mounting screw, they will synchronously drive the upper and lower push rods to move synchronously. The upper auxiliary fixed rod mounted on the upper push rod and the lower auxiliary fixed rod mounted on the lower push rod will use the cooperation of the upper and lower auxiliary frame plates to drive the auxiliary slider to slide horizontally on the auxiliary slide rod. When the auxiliary slider moves horizontally, the function of the auxiliary spring is used to assist in offsetting the tension generated by the main connecting piece and the auxiliary connecting piece, thus ensuring the safety and stability of the entire tension fitting under dynamic load.

[0014] 4. This invention, through the cooperation of connecting components, inner rotating plate, outer rotating plate, upper auxiliary rod, lower auxiliary rod and auxiliary components, can effectively disperse tensile stress, avoid excessive tensile stress caused by changes in the span between towers, ensure the stability and safety of the entire tension fitting, extend service life and improve overall performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connecting block in this invention; Figure 3 This is a schematic diagram of the main connecting piece in this invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the main connecting piece in this invention; Figure 6 This is a schematic diagram of the auxiliary component in this invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a partial cross-sectional view of the main connecting piece in this invention.

[0016] In the diagram: 1. Main connecting piece; 2. Secondary connecting piece; 3. Left guard rod; 4. Right guard rod; 5. Hinge hole; 6. Hinge pin; 7. Positioning hole; 8. Positioning bolt; 9. Left hinge piece; 10. Right hinge piece; 11. Connecting block; 12. Connecting tension spring; 13. Mounting screw hole; 14. Mounting screw; 15. Inner rotating plate; 16. Outer rotating plate; 17. Lower auxiliary rod; 18. Upper auxiliary rod; 19. Hinge groove; 20. 21. Central pivot; 22. Left mounting slot; 23. Right mounting slot; 24. Connecting pivot slot; 25. Connecting pivot rod; 26. Connecting torsion spring; 27. Auxiliary fixed plate; 28. Auxiliary slide rod; 29. ​​Auxiliary slider; 30. Upper auxiliary frame plate; 31. Lower auxiliary frame plate; 32. Upper auxiliary fixed rod; 33. Lower push rod; 34. Lower auxiliary fixed rod; 35. Auxiliary spring; 36. Lower pivot; 37. Upper pivot. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-8This invention relates to a shear-type tension fitting for overhead power lines, comprising a main connecting piece 1 and a secondary connecting piece 2. Connecting components are provided on the main connecting piece 1 and the secondary connecting piece 2, and a left guard rod 3 and a right guard rod 4 are provided on the connecting components. Hinge holes 5 are provided on the side end faces of both the left and right guard rods 3 and 4. The left and right guard rods 3 and 4 are rotatably mounted through the hinge holes 5 and hinge pins 6. A left hinge piece 9 and a right hinge piece 10 are connected to the main connecting piece 1 and the secondary connecting piece 2 through positioning holes 7 and positioning bolts 8. Connecting blocks 11 are rotatably mounted on both the left and right hinge pieces 9 and 10. A connecting tension spring 12 is fixedly connected between the two connecting blocks 11. Mounting screw holes 13 are provided on the outer surfaces of both the main connecting piece 1 and the secondary connecting piece 2. Mounting screws 14 are threaded into the mounting screw holes 13, and mounting screws 14 are rotatably mounted on the mounting screws 14. The system comprises an inner rotating plate 15 and an outer rotating plate 16. The end of the inner rotating plate 15 furthest from the mounting screw 14 is rotatably mounted with a lower auxiliary rod 17 via a lower rotating shaft 36. The end of the outer rotating plate 16 furthest from the mounting screw 14 is rotatably mounted with an upper auxiliary rod 18 via an upper rotating shaft 37. Both the main connecting piece 1 and the auxiliary connecting piece 2 have hinge slots 19. The left hinge piece 9 and the right hinge piece 10 are respectively installed in their corresponding hinge slots 19. The upper auxiliary rod 18 and the lower auxiliary rod 17 are rotatably mounted at their center positions via a central rotating shaft 20. The inner rotating plate 15 is positioned inside the outer rotating plate 16. The lower auxiliary rod 17 and the upper auxiliary rod 18 are arranged in a staggered pattern, while the inner rotating plate 15 and the outer rotating plate 16 are arranged in a V-shape. The number of upper auxiliary rods 18 and lower auxiliary rods 17 can be adjusted according to personnel requirements, and the connection between the upper auxiliary rods 18 and lower auxiliary rods 17 can be achieved through... Figure 1 It is clearly understood that the right guard rod 4 has a storage slot for the left guard rod 3 to be stored, and through this storage slot, it is ensured that the left guard rod 3 and the right guard rod 4 can rotate at a large angle with the hinge pin 6 as the center.

[0019] In this embodiment, the two ends of the conductors between the two towers are connected together by the main connecting piece 1 and the auxiliary connecting piece 2 respectively. When the main connecting piece 1 and the auxiliary connecting piece 2 are under tension, the tension is effectively resisted by the two connecting springs 12 on the main connecting piece 1 and the auxiliary connecting piece 2. At the same time, the inner rotating plate 15 and the outer rotating plate 16 on the main connecting piece 1 and the auxiliary connecting piece 2 will rotate around the mounting screw 14. Simultaneously, the upper auxiliary rod 18 and the lower auxiliary rod 17 will be driven to rotate around the central rotating shaft 20 due to the linkage between the inner rotating plate 15 and the outer rotating plate 16. The inner rotating plate 15, the outer rotating plate 16, the upper auxiliary rod 18 and the lower auxiliary rod 17 in the contracted state will be directly unfolded. At the same time, the stable rotation of the inner rotating plate 15, the outer rotating plate 16, the upper auxiliary rod 18 and the lower auxiliary rod 17 avoids excessive tensile stress caused by the change of the span between the towers, effectively improving the performance of the tension fitting.

[0020] The connecting components include a left mounting slot 21 and a right mounting slot 22 formed on the main connecting piece 1 and the auxiliary connecting piece 2. Both the left mounting slot 21 and the right mounting slot 22 have connecting rotating slots 23 inside. A connecting rotating rod 24 is fixedly installed inside the connecting rotating slot 23. A connecting torsion spring 25 is fixedly connected inside the connecting rotating slot 23 and outside the connecting rotating rod 24. The tail end of the left protective rod 3 is fixedly installed with the connecting rotating rod 24 in the left mounting slot 21. The tail end of the right protective rod 4 is fixedly installed with the connecting rotating rod 24 in the right mounting slot 22. The end of the connecting torsion spring 25 in the left mounting slot 21 away from the connecting rotating slot 23 is fixedly connected with the left protective rod 3. The end of the connecting torsion spring 25 in the right mounting slot 22 away from the connecting rotating slot 23 is fixedly connected with the right protective rod 4. The openings of the left mounting slot 21 and the right mounting slot 22 can be adjusted according to the size of the left protective rod 3 and the right protective rod 4.

[0021] In this embodiment, when the left guard rod 3 and the right guard rod 4 rotate around the corresponding connecting rod 24, the left guard rod 3 and the right guard rod 4 will drive the connecting torsion spring 25 to rotate. The reaction force generated by the connecting torsion spring 25 can increase the maximum tension that the left guard rod 3 and the right guard rod 4 can withstand. At the same time, based on the connecting tension spring 12, additional support force is added to ensure that the left guard rod 3 and the right guard rod 4 can better disperse and absorb the force when subjected to external pressure, reduce the risk of damage to a single structure, and improve the overall use effect and service life.

[0022] Both the main connecting piece 1 and the auxiliary connecting piece 2 are equipped with auxiliary components. These auxiliary components include two auxiliary fixed plates 26 fixedly mounted on the main connecting piece 1 and the auxiliary connecting piece 2, respectively. An auxiliary sliding rod 27 is fixedly mounted between the two auxiliary fixed plates 26. An auxiliary slider 28 is slidably mounted on the auxiliary sliding rod 27. Symmetrically arranged upper auxiliary frame plate 29 and lower auxiliary frame plate 30 are fixedly mounted on the auxiliary slider 28. An upper push rod 31 is rotatably mounted on the upper auxiliary frame plate 29, with an upper auxiliary fixed rod 32 rotatably connected to the end of the upper push rod 31 away from the upper auxiliary frame plate 29. A lower push rod 33 is rotatably mounted on the lower auxiliary frame plate 30, with a lower auxiliary fixed rod 34 rotatably mounted to the end of the lower push rod 33 away from the lower auxiliary frame plate 30. The side end face of the auxiliary slider 28 is fixed. An auxiliary spring 35 is connected, with the end of the auxiliary spring 35 away from the auxiliary slider 28 fixedly connected to the auxiliary fixed plate 26. The upper auxiliary fixed rod 32, the lower auxiliary fixed rod 34, the upper push rod 31, and the lower push rod 33 are arranged at an angle. The upper auxiliary fixed rod 32 and the upper push rod 31, the lower auxiliary fixed rod 34 and the lower push rod 33 are all arranged in a V-shape. The auxiliary slider 28 on the main connecting piece 1 and the auxiliary connecting piece 2 are slidably installed with the main connecting piece 1 and the auxiliary connecting piece 2, respectively, to ensure the stability of the auxiliary slider 28 when moving horizontally. At the same time, when the upper auxiliary fixed rod 32 and the lower auxiliary fixed rod 34 rotate inward, they will not form a right angle, ensuring that when the auxiliary fixed rod rotates inward, it can return to its original position using the reaction force of the auxiliary spring 35.

[0023] In this embodiment, when the inner rotating plate 15 and the outer rotating plate 16 rotate around the mounting screw 14, they will synchronously drive the upper push rod 31 and the lower push rod 33 to move synchronously. The upper auxiliary fixed rod 32 mounted on the upper push rod 31 and the lower auxiliary fixed rod 34 mounted on the lower push rod 33 will use the cooperation of the upper auxiliary frame plate 29 and the lower auxiliary frame plate 30 to drive the auxiliary slider 28 to slide horizontally on the auxiliary slide rod 27. When the auxiliary slider 28 moves horizontally, the auxiliary spring 35 is used to assist in offsetting the tension generated by the main connecting piece 1 and the auxiliary connecting piece 2, ensuring the safety and stability of the entire tension fitting under dynamic load.

[0024] Working principle: In use, the two ends of the conductors between the two towers are connected together by the main connecting piece 1 and the auxiliary connecting piece 2 respectively. When the main connecting piece 1 and the auxiliary connecting piece 2 are under tension, the two connecting springs 12 on the main connecting piece 1 and the auxiliary connecting piece 2 effectively resist the tension. At the same time, the inner rotating plate 15 and the outer rotating plate 16 on the main connecting piece 1 and the auxiliary connecting piece 2 will rotate around the mounting screw 14. The upper auxiliary rod is driven by the linkage of the inner rotating plate 15 and the outer rotating plate 16. 18 and lower auxiliary rod 17 rotate around the central pivot 20. The inner rotating plate 15, outer rotating plate 16, upper auxiliary rod 18, and lower auxiliary rod 17, which are in a retracted state, will directly unfold. At the same time, the stable rotation of the inner rotating plate 15, outer rotating plate 16, upper auxiliary rod 18, and lower auxiliary rod 17 avoids excessive tensile stress caused by changes in the inter-tower spacing. When the left protective rod 3 and right protective rod 4 rotate around the corresponding connecting rotating rod 24, the left protective rod 3 and right protective rod 4 will drive the connecting torsion spring 25 to rotate. The rotation, through the reaction force generated by the connecting torsion spring 25, can expand the maximum tension borne by the left guard rod 3 and the right guard rod 4. At the same time, based on the connecting tension spring 12, additional support force is added to ensure that the left guard rod 3 and the right guard rod 4 can better disperse and absorb force when subjected to external pressure, reduce the risk of damage to individual structures, and improve the overall use effect and service life. When the inner rotating plate 15 and the outer rotating plate 16 rotate around the mounting screw 14, they will synchronously drive the upper push rod 31 and the lower push rod 33 to move synchronously. The upper auxiliary fixed rod 32 installed on the upper push rod 31 and the lower auxiliary fixed rod 34 installed on the lower push rod 33 will use the cooperation of the upper auxiliary frame plate 29 and the lower auxiliary frame plate 30 to drive the auxiliary slider 28 to slide horizontally on the auxiliary slide rod 27. When the auxiliary slider 28 moves horizontally, the function of the auxiliary spring 35 is used to assist in offsetting the tension generated by the main connecting piece 1 and the auxiliary connecting piece 2, ensuring the safety and stability of the entire tension fitting under dynamic load.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A shear-type tension fitting for overhead power lines, comprising a main connecting piece (1) and a secondary connecting piece (2), characterized in that: The main connecting piece (1) and the auxiliary connecting piece (2) are provided with connecting components. The connecting components are provided with a left guard rod (3) and a right guard rod (4). The side end faces of the left guard rod (3) and the right guard rod (4) are provided with hinge holes (5). The left guard rod (3) and the right guard rod (4) are rotatably installed through the hinge holes (5) and the hinge pins (6). The main connecting piece (1) and the auxiliary connecting piece (2) are connected by a left hinge piece (9) and a right hinge piece (10) through a positioning hole (7) and a positioning bolt (8). A connecting block (11) is rotatably installed on both the left hinge piece (9) and the right hinge piece (10). A connecting spring (12) is fixedly connected between the two connecting blocks (11). The outer surfaces of the main connecting piece (1) and the auxiliary connecting piece (2) are provided with mounting screw holes (13). The mounting screw holes (13) are threaded with mounting screws (14). An inner rotating plate (15) and an outer rotating plate (16) are rotatably mounted on the mounting screws (14). The end of the inner rotating plate (15) away from the mounting screws (14) is rotatably mounted with a lower auxiliary rod (17) via a lower rotating shaft (36). The end of the outer rotating plate (16) away from the mounting screws (14) is rotatably mounted with an upper auxiliary rod (18) via an upper rotating shaft (37). Both the main connecting piece (1) and the secondary connecting piece (2) are provided with auxiliary components.

2. The shear-type tension fitting for overhead lines according to claim 1, characterized in that: The main connecting piece (1) and the auxiliary connecting piece (2) are both provided with hinge slots (19). The left hinge piece (9) and the right hinge piece (10) are respectively installed in the corresponding hinge slots (19). The upper auxiliary rod (18) and the lower auxiliary rod (17) are rotatably installed at their center positions through the central pivot shaft (20).

3. The shear-type tension fitting for overhead lines according to claim 1, characterized in that: The inner rotating plate (15) is located inside the outer rotating plate (16), the lower auxiliary rod (17) and the upper auxiliary rod (18) are arranged in a front-to-back cross arrangement, and the inner rotating plate (15) and the outer rotating plate (16) are arranged in a V-shape.

4. The shear-type tension fitting for overhead lines according to claim 3, characterized in that: The connecting assembly includes a left mounting groove (21) and a right mounting groove (22) opened on the main connecting piece (1) and the auxiliary connecting piece (2). A connecting rotating groove (23) is opened inside the left mounting groove (21) and the right mounting groove (22). A connecting rotating rod (24) is fixedly installed inside the connecting rotating groove (23). A connecting torsion spring (25) is fixedly connected inside the connecting rotating groove (23) and outside the connecting rotating rod (24).

5. The shear-type tension fitting for overhead lines according to claim 4, characterized in that: The tail end of the left guard rod (3) is fixedly installed with the connecting rotating rod (24) in the left mounting groove (21), the tail end of the right guard rod (4) is fixedly installed with the connecting rotating rod (24) in the right mounting groove (22), the end of the connecting torsion spring (25) in the left mounting groove (21) away from the connecting rotating groove (23) is fixedly connected with the left guard rod (3), and the end of the connecting torsion spring (25) in the right mounting groove (22) away from the connecting rotating groove (23) is fixedly connected with the right guard rod (4).

6. The shear-type tension fitting for overhead lines according to claim 1, characterized in that: The auxiliary components include two auxiliary fixed plates (26) fixedly installed on the main connecting plate (1) and the auxiliary connecting plate (2), an auxiliary slide rod (27) fixedly installed between the two auxiliary fixed plates (26), an auxiliary slider (28) slidably installed on the auxiliary slide rod (27), and an upper auxiliary frame plate (29) and a lower auxiliary frame plate (30) symmetrically arranged fixedly installed on the auxiliary slider (28).

7. The shear-type tension fitting for overhead lines according to claim 6, characterized in that: An upper push rod (31) is rotatably mounted on the upper auxiliary frame plate (29). An upper auxiliary fixed rod (32) is rotatably connected to the end of the upper push rod (31) away from the upper auxiliary frame plate (29). A lower push rod (33) is rotatably mounted on the lower auxiliary frame plate (30). A lower auxiliary fixed rod (34) is rotatably mounted to the end of the lower push rod (33) away from the lower auxiliary frame plate (30). An auxiliary spring (35) is fixedly connected to the side end face of the auxiliary slider (28).

8. The shear-type tension fitting for overhead lines according to claim 7, characterized in that: The auxiliary spring (35) is fixedly connected to the auxiliary plate (26) at the end away from the auxiliary slider (28). The upper auxiliary fixed rod (32), the lower auxiliary fixed rod (34), the upper push rod (31) and the lower push rod (33) are arranged at an angle. The upper auxiliary fixed rod (32) and the upper push rod (31), the lower auxiliary fixed rod (34) and the lower push rod (33) are all arranged in a V-shape.

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