Switch over-range adjusting structure, outdoor switch and over-range adjusting method

Abstract

This invention discloses a switch overtravel adjustment structure, an outdoor switch, and an overtravel adjustment method, relating to the field of high-voltage switchgear technology. The structure includes a drive rod assembly, which consists of a drive rod A, an adjusting rod A, a mechanism drive rod, an adjusting rod B, a drive rod B, an adjusting rod C, and a drive rod C arranged coaxially along the axial direction. Adjusting rods B and C have oppositely directed external threads and adjusting parts at both ends. Rotating the adjusting parts changes the shaft segment spacing, enabling independent overtravel adjustment for phases B and C without disassembling the shaft segments. One end of adjusting rod A is threadedly connected to drive rod A, and the other end is connected to the mechanism drive rod. Overtravel for phase A is achieved by adjusting the length of this threaded segment. This structure reduces disassembly and assembly workload, improves assembly, debugging, and maintenance efficiency, reduces labor costs, avoids grease contamination and loss, and ensures long-term reliable operation of transmission components.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear technology, and in particular to a switch overtravel adjustment structure, an outdoor switch, and an overtravel adjustment method. Background Technology

[0002] With the continuous increase in power load on power distribution networks, the requirements for various performance parameters of outdoor pole-mounted vacuum switches are becoming increasingly stringent. Among them, contact overtravel is a key indicator that directly affects the mechanical performance, dynamic and thermal stability, and breaking capacity of the switch, and is a core parameter to ensure the reliable operation of the switch.

[0003] In actual production, due to unavoidable processing and assembly errors, it is often necessary to adjust the overtravel of a single phase individually during commissioning. However, most conventional outdoor switches currently use an integrated drive rod structure, which is connected to the insulating pull rod adjustment head of each phase's vacuum interrupter via a connecting plate. If the overtravel of a single phase does not meet the standard, the drive rod, connecting plate, and related connecting parts must all be removed before the insulating pull rod can be adjusted. After adjustment, it must be reassembled and retested. If it still fails to meet the standard, the above disassembly and reassembly process must be repeated.

[0004] This traditional structure and adjustment method has the following obvious drawbacks:

[0005] Adjusting the overtravel requires disassembling the entire transmission component, which is cumbersome, time-consuming, and labor-intensive, and cannot meet the needs of efficient production and rapid maintenance.

[0006] After assembly, all transmission components have been coated with grease. Repeated disassembly and reassembly will cause grease contamination and loss. If grease is applied again after adjustment, there may be cases where the grease is not applied properly, which will significantly reduce the smoothness of transmission and service life.

[0007] Repeated disassembly and reassembly can easily cause small transmission parts to fall out accidentally. Once they fall into the switch post, the post may even need to be disassembled to remove them, which not only increases working time but may also cause equipment damage.

[0008] Chinese patent (CN217114223U) discloses an outdoor switch operating mechanism that employs a two-drive linkage structure, increasing the operating space and allowing adjustment of the insulating pull rod adjustment head without disassembling the drive linkage. However, this solution still requires disassembly of connecting plates, pins, and other connecting parts during adjustment. While the operation process is simplified, the aforementioned defects are not fundamentally resolved. Furthermore, the position of the insulating pull rod adjustment head changes after adjusting a single-phase overtravel, potentially causing new assembly difficulties.

[0009] In summary, existing overtravel adjustment structures for outdoor switches, due to their rigid connection or incomplete decoupling between the drive rod and the transmission components of each phase, require extensive disassembly of the drive rod, connecting plates, and other transmission components for overtravel adjustment. This results in cumbersome operation, compromised transmission reliability, and structural hazards. Therefore, there is an urgent need for a new adjustment structure that avoids disassembling the drive rod and connecting plates, enabling convenient overtravel adjustment for each phase. Summary of the Invention

[0010] In view of this, the present invention proposes a switch overtravel adjustment structure, an outdoor switch, and an overtravel adjustment method, aiming to solve at least one of the above-mentioned technical problems.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: The first aspect of the present invention provides a switch overtravel adjustment structure, including a drive rod assembly for transmitting a drive mechanism to an A-phase insulating pull rod adjustment head, a B-phase insulating pull rod adjustment head, and a C-phase insulating pull rod adjustment head; the drive rod assembly includes a drive rod A, an adjustment rod A, a mechanism drive rod, an adjustment rod B, a drive rod B, an adjustment rod C, and a drive rod C arranged coaxially along the axial direction. One end of the drive rod A is used for a drive connection with the A-phase insulating pull rod adjustment head, and the other end is threadedly connected to one end of the adjustment rod A; the other end of the adjustment rod A is connected to one end of the mechanism drive rod; the mechanism drive rod is provided with a connection structure for a drive connection with the output shaft of the drive mechanism; the other end of the mechanism drive rod is threadedly connected to one end of the adjustment rod B; the other end of the adjustment rod B is threadedly connected to one end of the drive rod B, and the drive rod B is used for a drive connection with the B-phase insulating pull rod adjustment head; the other end of the drive rod B is threadedly connected to one end of the adjustment rod C; the other end of the adjustment rod C is threadedly connected to one end of the drive rod C, and the drive rod C is used for a drive connection with the C-phase insulating pull rod adjustment head; The adjusting rod B has external threads with opposite directions at both ends, and the adjusting rod B is provided with an adjusting part for receiving external force to drive it to rotate around its own axis; the adjusting rod C has external threads with opposite directions at both ends, and the adjusting rod C is provided with an adjusting part for receiving external force to drive it to rotate around its own axis.

[0012] This invention discloses a switch overtravel adjustment structure. Both ends of adjusting rods B and C are provided with external threads in opposite directions and adjusting parts. Rotating the adjusting parts changes the axial distance between the two shaft segments connected by adjusting rods B or C, enabling independent adjustment of the overtravel of phases B and C without disassembling the shaft segments of the drive rod assembly. One end of adjusting rod A is threadedly connected to drive rod A, and the other end is connected to the mechanism drive rod. Overtravel of phase A is achieved by adjusting the length of this threaded connection section, again avoiding the need to disassemble the entire drive rod assembly. This structure significantly reduces the workload of disassembly and assembly during overtravel adjustment, improves assembly, debugging, and maintenance efficiency, and reduces labor costs. Simultaneously, it avoids grease contamination and loss caused by repeated disassembly and assembly, ensuring the long-term reliable operation of each transmission component of the drive rod assembly.

[0013] As a further improvement to the above technical solution, the other end of the adjusting rod A is fixedly connected to one end of the mechanism drive rod.

[0014] The beneficial effects of the above technical solution are as follows: For outdoor pole-mounted switches with a large operating space at the A-phase insulating pull rod adjusting head corresponding to the mechanism housing, it is relatively easy to disconnect the transmission connection between the drive rod A and the A-phase insulating pull rod adjusting head. In this case, the other end of the adjusting rod A is fixedly connected to the mechanism drive rod, retaining only the threaded transmission connection between one end of the adjusting rod A and the other end of the drive rod A, thus simplifying the structure. When adjusting the A-phase overtravel, disconnecting the transmission connection between the drive rod A and the A-phase insulating pull rod adjusting head, and rotating the drive rod A changes the axial distance between the drive rod A and the mechanism drive rod, thereby achieving A-phase overtravel adjustment.

[0015] As a further improvement to the above technical solution, fastening nuts are screwed onto the external threads of both ends of the adjusting rod B, both ends of the adjusting rod C, and the end of the adjusting rod A near the driving rod A; the multiple fastening nuts are used to press against the end faces of the driving rod A, the mechanism driving rod, the driving rod B, and the driving rod C to lock the corresponding threaded connections.

[0016] The beneficial effects of the above technical solution are: when each fastening nut is pressed against the end face of the corresponding drive rod A, mechanism drive rod, drive rod B and drive rod C, it can lock the corresponding threaded connection structure after the overtravel adjustment is completed, preventing the threads from loosening and overtravel drift due to vibration.

[0017] As a further improvement to the above technical solution, the two ends of the adjusting rod A are provided with external threads with opposite directions of rotation, and the other end of the adjusting rod A is threadedly connected to one end of the mechanism drive rod.

[0018] The beneficial effects of the above technical solution are: both ends of the adjusting rod A are provided with external threads with opposite directions of rotation, and the other end is threadedly connected to the mechanism drive rod, so that the adjusting rod A has the same function as the adjusting rod B and the adjusting rod C; rotating the adjusting rod A can change the axial distance between the drive rod A and the mechanism drive rod, realizing the overtravel adjustment of phase A without disassembly.

[0019] As a further improvement to the above technical solution, the adjusting rod A is provided with an adjusting part for receiving external force to drive it to rotate around its own axis.

[0020] The beneficial effects of the above technical solution are: the adjusting rod A is provided with an adjusting part, and the operation mode is the same as that of the adjusting rods B and C. Rotating the adjusting part can drive the adjusting rod A to rotate around its own axis to adjust the overtravel of phase A, and the three-phase operation is consistent.

[0021] As a further improvement to the above technical solution, the adjusting parts on the adjusting rod A, the adjusting rod B and the adjusting rod C are all wrench parts for cooperating with the wrench tool.

[0022] The beneficial effects of the above technical solution are: the wrench parts on adjusting rod A, adjusting rod B and adjusting rod C can all be adapted to wrench tools, which facilitates the adjustment operation by on-site operators.

[0023] As a further improvement to the above technical solution, the other end of the drive rod A, both ends of the mechanism drive rod, both ends of the drive rod B, and one end of the drive rod C are all provided with threaded holes along the axial direction; the external threads with opposite directions at both ends of the adjusting rod A, the adjusting rod B, and the adjusting rod C respectively cooperate with the corresponding threaded holes to form a helical transmission pair.

[0024] The beneficial effects of the above technical solution are: the external threads with opposite directions at both ends of the adjusting rod A, adjusting rod B and adjusting rod C respectively cooperate with the corresponding threaded holes to form a helical transmission pair, which converts the rotational motion of adjusting rod A, adjusting rod B or adjusting rod C into the axial linear motion of adjacent shaft segments.

[0025] As a further improvement to the above technical solution, fastening nuts are screwed onto the external threads at both ends of the adjusting rod A, the adjusting rod B, and the adjusting rod C. Multiple fastening nuts are used to press against the end faces of the driving rod A, the mechanism driving rod, the driving rod B, and the driving rod C to lock the corresponding threaded connections.

[0026] The beneficial effect of the above technical solution is that the end faces of each fastening nut and the corresponding drive rod A, mechanism drive rod, drive rod B and drive rod C are pressed together, which can fully lock all adjustable threaded connections.

[0027] A second aspect of the present invention provides an outdoor switch, including a mechanism housing, a drive mechanism, an A-phase insulating pull rod adjusting head, a B-phase insulating pull rod adjusting head, a C-phase insulating pull rod adjusting head, and an overtravel adjustment structure for the switch; The drive mechanism is mounted on the mechanism housing; the output shaft of the drive mechanism is connected to the drive rod in the switch overtravel adjustment structure to drive its axial movement. The drive rod A is connected to the A-phase insulated pull rod adjustment head via the A connecting plate, the drive rod B is connected to the B-phase insulated pull rod adjustment head via the B connecting plate, and the drive rod C is connected to the C-phase insulated pull rod adjustment head via the C connecting plate.

[0028] The outdoor switch of the present invention does not require extensive disassembly of the drive rod assembly and the A, B, and C connecting plates during overtravel adjustment, reducing the difficulty of on-site maintenance and minimizing the risk of parts falling off during disassembly and assembly.

[0029] A third aspect of the present invention provides a method for overtravel adjustment of an outdoor switch, comprising the following steps: When it is necessary to adjust the overtravel of phase A, the length of the threaded connection section between the drive rod A and the adjusting rod A is adjusted, thereby changing the axial distance between the drive rod A and the mechanism drive rod to adjust the overtravel of phase A; When it is necessary to adjust the overtravel of phase B, rotate the adjusting part of the adjusting rod B to change the axial distance between the driving rod B and the mechanism driving rod to adjust the overtravel of phase B; at the same time, rotate the adjusting part of the adjusting rod C to keep the axial distance between the driving rod C and the mechanism driving rod unchanged. When it is necessary to adjust the overtravel of phase C, rotate the adjusting part of the adjusting rod C to change the axial distance between the driving rod C and the driving rod B, thereby adjusting the overtravel of phase C.

[0030] The outdoor switch overtravel adjustment method of the present invention allows for adjustment of phase A overtravel simply by adjusting the length of the threaded connection between drive rod A and adjustment rod A, without requiring extensive disassembly of the shaft sections in the drive rod assembly. For phase B overtravel adjustment, adjustment is performed by rotating the adjustment part of adjustment rod B, while simultaneously compensating by rotating the adjustment part of adjustment rod C, ensuring phase C remains unaffected. Adjusting phase C overtravel only requires rotating the adjustment part of adjustment rod C, making the overtravel adjustment operation convenient.

[0031] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses a switch overtravel adjustment structure, an outdoor switch, and an overtravel adjustment method, which have the following advantages and beneficial effects.

[0032] 1. This invention achieves adjustment with or without disassembly. For B-phase and C-phase overtravel adjustment, only the adjusting part of the corresponding adjusting rod needs to be rotated; no shaft segment needs to be disassembled from the drive rod assembly. For A-phase overtravel adjustment, in the fixed connection scheme, only the transmission connection between the drive rod A and the A-phase insulating pull rod adjusting head needs to be disconnected; in the threaded transmission connection scheme, disassembly is also eliminated. This significantly reduces the workload of disassembly and assembly, improves efficiency, and lowers labor costs.

[0033] 2. This invention achieves stepless and precise overtravel adjustment. By continuously rotating the adjusting rod A, adjusting rod B, or adjusting rod C, the distance between adjacent shaft segments can be changed steplessly. This overcomes the limitation of traditional structures, which can only be adjusted in steps of half a turn of the thread due to the alignment of the pin hole (the traditional structure directly adjusts the insulating pull rod adjusting head, which can only be adjusted in units of half a turn of the thread because the transmission pin needs to be inserted. For a fine thread of M12×1.25, half a turn corresponds to an overtravel of 0.625 mm). The adjustment accuracy is higher.

[0034] 3. This invention ensures the transmission reliability of outdoor switches, significantly reduces the number of disassembly and assembly operations, avoids grease contamination and loss, ensures smooth operation of all transmission components in the drive rod assembly, eliminates the risk of small parts falling off, and extends the service life of the switch. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of the operating mechanism of the outdoor switch of the present invention.

[0037] Figure 2 This is a schematic diagram of the overall structure of the operating mechanism of the outdoor switch of the present invention from another perspective.

[0038] Figure 3 This is a schematic diagram of a drive rod assembly structure of the switch overtravel adjustment structure of the present invention.

[0039] Figure 4 This is a schematic diagram of another drive rod assembly structure of the switch overtravel adjustment structure of the present invention.

[0040] Figure 5 This is a schematic diagram of the adjusting rod A structure of the switch overtravel adjustment structure of the present invention.

[0041] In the diagram: 1. Mechanism housing; 11. Drive mechanism; 111. Output shaft; 12. A-phase insulated pull rod adjusting head; 13. B-phase insulated pull rod adjusting head; 14. C-phase insulated pull rod adjusting head; 15. A connecting plate; 16. B connecting plate; 17. C connecting plate; 18. Transmission pin; 2. Drive rod assembly; 21. Drive rod A; 22. Adjusting rod A; 221. Right-hand screw; 222. Adjusting part; 223. Left-hand screw; 23. Mechanism drive rod; 24. Adjusting rod B; 25. Drive rod B; 26. Adjusting rod C; 27. Drive rod C; 28. Fastening nut. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to 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.

[0046] According to embodiments of the present invention, such as Figures 1 to 5As shown, a switch overtravel adjustment structure includes a drive mechanism 11 for transmitting power to an outdoor switch operating mechanism and a drive rod assembly 2 for adjusting A-phase insulating pull rods 12, B-phase insulating pull rods 13, and C-phase insulating pull rods 14; the drive rod assembly 2 includes a drive rod A21, an adjusting rod A22, a mechanism drive rod 23, an adjusting rod B24, a drive rod B25, an adjusting rod C26, and a drive rod C27 arranged coaxially along the axial direction. One end of the drive rod A21 is used for transmission connection with the A-phase insulating pull rod adjusting head 12, and the other end is threadedly connected to one end of the adjusting rod A22; the other end of the adjusting rod A22 is connected to one end of the mechanism drive rod 23; the mechanism drive rod 23 is provided with a connection structure for transmission connection with the output shaft 111 of the drive mechanism 11; the other end of the mechanism drive rod 23 is threadedly connected to one end of the adjusting rod B24; the other end of the adjusting rod B24 is threadedly connected to one end of the drive rod B25, and the drive rod B25 is used for transmission connection with the B-phase insulating pull rod adjusting head 13; the other end of the drive rod B25 is threadedly connected to one end of the adjusting rod C26; the other end of the adjusting rod C26 is threadedly connected to one end of the drive rod C27, and the drive rod C27 is used for transmission connection with the C-phase insulating pull rod adjusting head 14; The adjusting rod B24 has external threads with opposite directions at both ends, and the adjusting rod B24 has an adjusting part for receiving external force to drive it to rotate around its own axis; the adjusting rod C26 has external threads with opposite directions at both ends, and the adjusting rod C26 has an adjusting part for receiving external force to drive it to rotate around its own axis.

[0047] This embodiment presents a switch overtravel adjustment structure. Both ends of adjusting rods B24 and C26 are provided with external threads and adjusting parts in opposite directions. Rotating the adjusting parts changes the axial distance between the two shaft segments connected to adjusting rods B24 or C26, enabling independent adjustment of the overtravel of phases B and C without disassembling the shaft segments in the drive rod assembly 2. One end of adjusting rod A22 is threadedly connected to drive rod A21, and the other end is connected to the mechanism drive rod 23. Overtravel of phase A is achieved by adjusting the length of this threaded connection segment, again avoiding the need to disassemble the entire drive rod assembly 2. This structure significantly reduces the workload of disassembly and assembly during overtravel adjustment, improves assembly, debugging, and maintenance efficiency, and reduces labor costs. Simultaneously, it avoids grease contamination and loss caused by repeated disassembly and assembly, ensuring the long-term reliable operation of each transmission component of the drive rod assembly 2.

[0048] In some embodiments, the other end of the adjusting rod A22 is fixedly connected to one end of the mechanism drive rod 23.

[0049] For outdoor pole-mounted switches with a large operating space at the A-phase insulating pull rod adjusting head 12 corresponding to the mechanism housing, disconnecting the transmission connection between the drive rod A21 and the A-phase insulating pull rod adjusting head 12 is relatively easy. In this case, the other end of the adjusting rod A22 is fixedly connected to the mechanism drive rod 23, retaining only the threaded transmission connection between one end of the adjusting rod A22 and the other end of the drive rod A21, thus simplifying the structure. When adjusting the A-phase overtravel, disconnecting the transmission connection between the drive rod A21 and the A-phase insulating pull rod adjusting head 12, and rotating the drive rod A21 changes the axial distance between the drive rod A21 and the mechanism drive rod 23, thus achieving A-phase overtravel adjustment.

[0050] In some embodiments, fastening nuts 28 are screwed onto the external threads of the adjusting rod B24 at both ends, the adjusting rod C26 at both ends, and the adjusting rod A22 near the drive rod A21. Multiple fastening nuts 28 are used to engage with the end faces of the drive rod A21, the mechanism drive rod 23, the drive rod B25, and the drive rod C27 to lock the corresponding threaded connection structures.

[0051] When each fastening nut 28 is engaged with the end face of the corresponding drive rod A21, mechanism drive rod 23, drive rod B25 and drive rod C27, it can lock the corresponding threaded connection structure after the overtravel adjustment is completed, preventing the threads from loosening and overtravel drift due to vibration.

[0052] In some embodiments, the two ends of the adjusting rod A22 are provided with external threads in opposite directions, and the other end of the adjusting rod A22 is threadedly connected to one end of the mechanism drive rod 23.

[0053] Both ends of the adjusting rod A22 are provided with external threads with opposite directions of rotation, and the other end is threadedly connected to the mechanism drive rod 23, so that the adjusting rod A22 has the same function as the adjusting rod B24 and the adjusting rod C26; rotating the adjusting rod A22 can change the axial distance between the drive rod A21 and the mechanism drive rod 23, realizing the overtravel adjustment of phase A without disassembly.

[0054] In some embodiments, the adjusting rod A22 is provided with an adjusting part for receiving external force to drive it to rotate about its own axis.

[0055] The regulating rod A22 is equipped with an adjusting part, which operates in the same way as the regulating rods B24 and C26. Rotating the adjusting part will drive the regulating rod A22 to rotate around its own axis to adjust the overtravel of phase A. The operation of all three phases is consistent.

[0056] In some embodiments, the adjusting portions on adjusting rods A22, B24, and C26 are all wrench portions for cooperating with a wrench tool.

[0057] The wrench parts on adjusting rods A22, B24 and C26 can all be fitted with wrench tools, making it convenient for on-site operators to perform adjustment operations.

[0058] In some embodiments, the wrench can be a regular hexagonal prism structure located in the middle of adjusting rods A22, B24, and C26, with three pairs of parallel clamping planes on its outer periphery, enabling rotational operation in conjunction with standard wrenches or other wrench-like tools. The regular hexagonal prism structure is highly versatile, facilitating adjustment by on-site personnel using conventional tools without requiring specialized equipment. Alternatively, the wrench can be other prism-like structures with at least one pair of parallel clamping planes, such as a regular quadrilateral structure, to accommodate different operational needs.

[0059] In some embodiments, the wrench can be a cross-shaped through-hole structure located in the middle of the adjusting rods A22, B24, and C26. This cross-shaped through-hole consists of two intersecting and communicating radial through-holes, penetrating the radial direction of the adjusting rods A22, B24, or C26. During adjustment, one end of a rod-shaped tool can be inserted into one of the holes in the cross-shaped through-hole, and torque can be applied by turning the other end of the tool, thus driving the adjusting rods A22, B24, or C26 to rotate around their own axis. The cross-shaped through-hole structure is easy to manufacture and allows for adjustment operations in the radial direction of the adjusting rods, even in situations with limited operating space, further improving the flexibility of on-site operation. Alternatively, the wrench can also be a single radial through-hole to accommodate different operating tools and operating habits.

[0060] In some embodiments, the other end of the drive rod A21, both ends of the mechanism drive rod 23, both ends of the drive rod B25, and one end of the drive rod C27 are all provided with threaded holes along the axial direction; the external threads with opposite directions at both ends of the adjusting rod A22, adjusting rod B24, and adjusting rod C26 respectively cooperate with the corresponding threaded holes to form a helical transmission pair.

[0061] The external threads with opposite directions at both ends of adjusting rods A22, B24, and C26 respectively engage with the corresponding threaded holes to form a helical transmission pair, converting the rotational motion of adjusting rods A22, B24, or C26 into the axial linear motion of adjacent shaft segments.

[0062] In some embodiments, fastening nuts 28 are screwed onto the external threads at both ends of adjusting rods A22, B24, and C26, respectively. Multiple fastening nuts 28 are used to engage with the end faces of driving rods A21, B25, and C27 to lock the corresponding threaded connection structures.

[0063] Each fastening nut 28 engages with the end face of the corresponding drive rod A21, mechanism drive rod 23, drive rod B25, and drive rod C27, which can fully lock all adjustable threaded connections.

[0064] In some embodiments, adjusting rod A22, adjusting rod B24 and adjusting rod C26 each include a right-hand screw 221, an adjusting part 222 and a left-hand screw 223 connected coaxially in sequence.

[0065] In some embodiments, the external thread pitch at both ends of adjusting rods A22, B24, and C26 is the same to facilitate uniform processing and adjustment operations. The axial lengths of adjusting rods A22, B24, and C26 can be set to be the same or different depending on the required adjustment stroke of each phase. Each end of adjusting rods A22, B24, and C26 is screwed with a fastening nut 28. The internal thread of each fastening nut 28 is adapted to the corresponding external thread. When tightened, the end face of each fastening nut 28 presses against the end face of the corresponding drive rod A21, mechanism drive rod 23, drive rod B25, or drive rod C27 to lock the corresponding threaded connection structure.

[0066] like Figures 1 to 5 As shown, another embodiment of the present invention provides an outdoor switch, including a mechanism housing 1, a drive mechanism 11, an A-phase insulating pull rod adjusting head 12, a B-phase insulating pull rod adjusting head 13, a C-phase insulating pull rod adjusting head 14, and a switch overtravel adjustment structure; The drive mechanism 11 is mounted on the mechanism housing 1; the output shaft 111 of the drive mechanism 11 is connected to the mechanism drive rod 23 in the switch overtravel adjustment structure to drive its axial movement. Drive rod A21 is connected to phase A insulating pull rod adjusting head 12 via A connecting plate 15, drive rod B25 is connected to phase B insulating pull rod adjusting head 13 via B connecting plate 16, and drive rod C27 is connected to phase C insulating pull rod adjusting head 14 via C connecting plate 17.

[0067] In this embodiment, the mechanism housing 1 of the outdoor switch is the mechanism housing of the outdoor switch operating mechanism. When adjusting overtravel, the outdoor switch of this embodiment does not require large-scale disassembly of the drive rod assembly 2 and the A connecting plate 15, B connecting plate 16, and C connecting plate 17, which reduces the difficulty of on-site maintenance and reduces the risk of parts falling off due to disassembly.

[0068] Specifically, drive rod A21 has a connecting hole at one end, and connecting plate 15 has pin holes at both ends. One end of connecting plate 15 is hinged to the connecting hole at one end of drive rod A21 via a transmission pin 18, and the other end is hinged to the adjusting head 12 of phase A insulating rod via a transmission pin 18, forming a detachable transmission connection. Similarly, drive rod B25 has a connecting hole, and connecting plate 16 has pin holes at both ends. One end of connecting plate 16 is hinged to the connecting hole of drive rod B25 via a transmission pin 18, and the other end is hinged to the adjusting head 13 of phase B insulating rod via a transmission pin 18, forming a detachable transmission connection. Drive rod C27 has a connecting hole, and connecting plate 17 has pin holes at both ends. One end of connecting plate 17 is hinged to the connecting hole of drive rod C27 via a transmission pin 18, and the other end is hinged to the adjusting head 14 of phase C insulating rod via a transmission pin 18, forming a detachable transmission connection.

[0069] like Figures 1 to 5 As shown, another embodiment of the present invention provides an overtravel adjustment method for an outdoor switch, comprising the following steps: When it is necessary to adjust the overtravel of phase A, adjust the length of the threaded connection section between drive rod A21 and adjusting rod A22, thereby changing the axial distance between drive rod A21 and mechanism drive rod 23 to adjust the overtravel of phase A; When it is necessary to adjust the overtravel of phase B, rotate the adjusting part of the adjusting rod B24 to change the axial distance between the driving rod B25 and the mechanism driving rod 23 to adjust the overtravel of phase B; at the same time, rotate the adjusting part of the adjusting rod C26 to keep the axial distance between the driving rod C27 and the mechanism driving rod 23 unchanged. When it is necessary to adjust the overtravel of phase C, rotate the adjusting part of the adjusting rod C26 to change the axial distance between the driving rod C27 and the driving rod B25 to adjust the overtravel of phase C.

[0070] In this embodiment, the outdoor switch overtravel adjustment method only requires adjusting the length of the threaded connection section between the drive rod A21 and the adjusting rod A22 when adjusting the overtravel of phase A, without the need for extensive disassembly of the shaft sections in the drive rod assembly 2. When adjusting the overtravel of phase B, adjustment is made by rotating the adjusting part of the adjusting rod B24, while simultaneously rotating the adjusting part of the adjusting rod C26 for compensation, ensuring that phase C is unaffected. Adjusting the overtravel of phase C only requires rotating the adjusting part of the adjusting rod C26, making the overtravel adjustment operation convenient.

[0071] In some embodiments, where the other end of the adjusting rod A22 of the switch overtravel adjustment structure is fixedly connected to one end of the mechanism drive rod 23, the specific overtravel adjustment method for the outdoor switch includes the following steps: When adjusting the overtravel of phase A: First, remove the transmission pin 18 connecting the connecting plate 15 of phase A and the drive rod A21. Then, loosen the fastening nut 28 on the adjusting rod A22 near the end of the drive rod A21. Rotate the drive rod A21 clockwise to reduce the distance between it and the output shaft 111 of the drive mechanism 11. At this time, the overtravel of phase A will decrease. If the drive rod A21 is rotated counterclockwise, the overtravel of phase A will increase. After the adjustment is completed, tighten the fastening nut 28 and reinstall the transmission pin 18.

[0072] When adjusting the B-phase overtravel: without disassembling any parts, first loosen the fastening nuts 28 at both ends of the adjusting rod B24; then rotate the adjusting part of the adjusting rod B24 counterclockwise. At this time, the distance between the drive rod B25 and the output shaft 111 of the drive mechanism 11 increases, and the B-phase overtravel decreases. If the B-phase overtravel needs to be increased, rotate the adjusting rod B24 clockwise. Note that the distance between the drive rod C27 and the output shaft 111 of the drive mechanism 11 will also change at this time, so it is necessary to loosen the fastening nuts 28 at both ends of the adjusting rod C26 and rotate it by the same angle, but in the opposite direction to the rotation of the adjusting rod B24, so that the distance between the drive rod C27 and the output shaft 111 of the drive mechanism 11 remains unchanged. After the adjustment is completed, tighten all the fastening nuts 28.

[0073] When it is necessary to adjust the C-phase overtravel: without disassembling any parts, first loosen the fastening nuts 28 at both ends of the adjusting rod C26; then rotate the adjusting part of the adjusting rod C26 counterclockwise. At this time, the distance between the drive rod C27 and the output shaft 111 of the drive mechanism 11 increases, and the C-phase overtravel decreases; if it is necessary to increase the C-phase overtravel, rotate the adjusting rod C26 clockwise; after the adjustment is completed, tighten the fastening nuts 28.

[0074] When it is necessary to adjust the overtravel of three phases A, B, and C simultaneously: the adjustment method for phase A is the same as the adjustment steps for phase A above, and the adjustment method for phase B is also unchanged, but there is no need to reset the drive rod C27. The compensation can be made directly according to the required adjustment amount of phase C.

[0075] In some embodiments, where the two ends of the adjusting rod A22 in the switch overtravel adjustment structure are provided with external threads of opposite directions, one end of the adjusting rod A22 is threadedly connected to the other end of the drive rod A21, and the other end of the adjusting rod A22 is threadedly connected to one end of the mechanism drive rod 23, the specific overtravel adjustment method of the outdoor switch includes the following steps: When it is necessary to adjust the overtravel of phase A: without disassembling any transmission components, first loosen the fastening nuts 28 at both ends of the adjusting rod A22; then rotate the adjusting part of the adjusting rod A22 counterclockwise. At this time, the distance between the drive rod A21 and the output shaft 111 of the drive mechanism 11 increases, and the overtravel of phase A decreases; if it is necessary to increase the overtravel of phase A, rotate the adjusting rod A22 clockwise; after the adjustment is completed, tighten the fastening nuts 28.

[0076] When adjusting the overtravel of phase B: without disassembling any parts, first loosen the fastening nuts 28 at both ends of adjusting rod B24 and adjusting rod C26; then rotate the adjusting part of adjusting rod B24 counterclockwise. At this time, the distance between driving rod B25 and the output shaft 111 of driving mechanism 11 increases, and the overtravel of phase B decreases; if it is necessary to increase the overtravel of phase B, rotate adjusting rod B24 clockwise; note that at this time, the distance between driving rod C27 and the output shaft 111 of driving mechanism 11 will also change, so it is necessary to rotate adjusting rod C26 by the same angle, but in the opposite direction to the rotation of adjusting rod B24, so that the distance between driving rod C27 and the output shaft 111 of driving mechanism 11 remains unchanged; after adjustment, tighten all fastening nuts 28.

[0077] When it is necessary to adjust the C-phase overtravel: without disassembling any parts, first loosen the fastening nuts 28 at both ends of the adjusting rod C26; then rotate the adjusting part of the adjusting rod C26 counterclockwise. At this time, the distance between the drive rod C27 and the output shaft 111 of the drive mechanism 11 increases, and the C-phase overtravel decreases; if it is necessary to increase the C-phase overtravel, rotate the adjusting rod C26 clockwise; after the adjustment is completed, tighten the fastening nuts 28.

[0078] When it is necessary to adjust the overtravel of three phases A, B, and C simultaneously: operate phase A according to the steps of the adjustment part of rotating adjustment rod A22 as described above, and operate phases B and C according to the corresponding steps described above. The adjustment of each phase does not interfere with each other.

[0079] This embodiment achieves the goal of adjusting the overtravel of three phases (A, B, and C) without disassembling any parts; simply rotating the corresponding adjusting rod is sufficient, further improving debugging efficiency.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A switch overtravel adjustment structure, comprising a drive rod assembly (2) for transmitting and connecting a drive mechanism (11) with an A-phase insulating pull rod adjusting head (12), a B-phase insulating pull rod adjusting head (13), and a C-phase insulating pull rod adjusting head (14); characterized in that: The drive rod assembly (2) includes a drive rod A (21), an adjusting rod A (22), a mechanism drive rod (23), an adjusting rod B (24), a drive rod B (25), an adjusting rod C (26), and a drive rod C (27) arranged coaxially along the axial direction. One end of the drive rod A (21) is used for transmission connection with the A-phase insulating pull rod adjustment head (12), and the other end is threadedly connected to one end of the adjustment rod A (22); the other end of the adjustment rod A (22) is connected to one end of the mechanism drive rod (23); the mechanism drive rod (23) is provided with a connection structure for transmission connection with the output shaft of the drive mechanism (11); the other end of the mechanism drive rod (23) is threadedly connected to one end of the adjustment rod B (24); the other end of the adjustment rod B (24) is threadedly connected to one end of the drive rod B (25), and the drive rod B (25) is used for transmission connection with the B-phase insulating pull rod adjustment head (13); the other end of the drive rod B (25) is threadedly connected to one end of the adjustment rod C (26); the other end of the adjustment rod C (26) is threadedly connected to one end of the drive rod C (27), and the drive rod C (27) is used for transmission connection with the C-phase insulating pull rod adjustment head (14); The two ends of the adjusting rod B (24) are provided with external threads with opposite directions of rotation. The adjusting rod B (24) is provided with an adjusting part for receiving external force to drive it to rotate around its own axis. The two ends of the adjusting rod C (26) are provided with external threads with opposite directions of rotation. The adjusting rod C (26) is provided with an adjusting part for receiving external force to drive it to rotate around its own axis.

2. The switch overtravel adjustment structure according to claim 1, characterized in that, The other end of the adjusting rod A (22) is fixedly connected to one end of the mechanism driving rod (23).

3. The switch overtravel adjustment structure according to claim 2, characterized in that, Both ends of the adjusting rod B (24), both ends of the adjusting rod C (26), and the external threads of the adjusting rod A (22) near the drive rod A (21) are each screwed with a fastening nut; the multiple fastening nuts are used to press against the end faces of the drive rod A (21), the mechanism drive rod (23), the drive rod B (25), and the drive rod C (27) to lock the corresponding threaded connections.

4. The switch overtravel adjustment structure according to claim 1, characterized in that, The two ends of the adjusting rod A (22) are provided with external threads with opposite directions of rotation, and the other end of the adjusting rod A (22) is threadedly connected to one end of the mechanism drive rod (23).

5. The switch overtravel adjustment structure according to claim 4, characterized in that, The adjusting rod A (22) is provided with an adjusting part for receiving external force to drive it to rotate around its own axis.

6. The switch overtravel adjustment structure according to claim 5, characterized in that, The adjusting parts on the adjusting rod A (22), the adjusting rod B (24) and the adjusting rod C (26) are all wrench parts for use with wrench tools.

7. The switch overtravel adjustment structure according to claim 4, characterized in that, The other end of the drive rod A (21), both ends of the mechanism drive rod (23), both ends of the drive rod B (25), and one end of the drive rod C (27) are all provided with threaded holes along the axial direction; the external threads with opposite directions at both ends of the adjusting rod A (22), the adjusting rod B (24), and the adjusting rod C (26) respectively cooperate with the corresponding threaded holes to form a helical transmission pair.

8. The switch overtravel adjustment structure according to claim 4, characterized in that, Each of the two ends of the adjusting rod A (22), the adjusting rod B (24), and the adjusting rod C (26) is screwed with a fastening nut. The multiple fastening nuts are used to press against the end faces of the driving rod A (21), the mechanism driving rod (23), the driving rod B (25), and the driving rod C (27) to lock the corresponding threaded connections.

9. An outdoor switch, characterized in that, It includes a mechanism housing (1), a drive mechanism (11), an A-phase insulated pull rod adjusting head (12), a B-phase insulated pull rod adjusting head (13), a C-phase insulated pull rod adjusting head (14), and a switch overtravel adjusting structure as described in any one of claims 1 to 8; The drive mechanism (11) is mounted on the mechanism housing (1); the output shaft of the drive mechanism (11) is connected to the mechanism drive rod (23) in the switch overtravel adjustment structure to drive its axial movement. The drive rod A (21) is connected to the A-phase insulating pull rod adjustment head (12) via the A connecting plate (15), the drive rod B (25) is connected to the B-phase insulating pull rod adjustment head (13) via the B connecting plate (16), and the drive rod C (27) is connected to the C-phase insulating pull rod adjustment head (14) via the C connecting plate (17).

10. A method for adjusting the overtravel distance of an outdoor switch as described in claim 9, characterized in that, Includes the following steps: When it is necessary to adjust the overtravel of phase A, adjust the length of the threaded connection section between the drive rod A (21) and the adjusting rod A (22), thereby changing the axial distance between the drive rod A (21) and the mechanism drive rod (23) to adjust the overtravel of phase A; When it is necessary to adjust the overtravel of phase B, rotate the adjusting part of the adjusting rod B (24) to change the axial distance between the driving rod B (25) and the mechanism driving rod (23) to adjust the overtravel of phase B; at the same time, rotate the adjusting part of the adjusting rod C (26) to keep the axial distance between the driving rod C (27) and the mechanism driving rod (23) unchanged. When it is necessary to adjust the overtravel of phase C, rotate the adjusting part of the adjusting rod C (26) to change the axial distance between the driving rod C (27) and the driving rod B (25) to adjust the overtravel of phase C.

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