Linear sliding spring type power transmission jumper spacer

Abstract

This invention provides a linear sliding spring-loaded transmission line jumper spacer, belonging to the field of transmission line bay maintenance technology. It includes a mounting clamp, a conductor clamp, and a buffer body. The mounting clamp is used to hold the tower-side extension rod or connecting plate; the conductor clamp is used to hold the jumper; the buffer body is located between the mounting clamp and the conductor clamp, with one end connected to the mounting clamp. An energy storage and reset component is installed inside the buffer body. A linear sliding rod passes through the energy storage and reset component at the other end of the buffer body, and extends out of the buffer body and connects to the conductor clamp. The linear sliding rod slides linearly back and forth along the axial direction of the buffer body with the aid of the energy storage and reset component. The buffer body buffers the axial displacement of the conductor clamp relative to the mounting clamp under external force. The linear sliding spring-loaded transmission line jumper spacer provided by this invention can absorb displacement and automatically return to its original position after the external force is released, thereby ensuring a stable safe distance between the conductor and surrounding components.

Description

Technical Field

[0001] This invention belongs to the field of transmission line spacing technology, and more specifically, relates to a linear sliding spring-loaded transmission jumper spacer. Background Technology

[0002] In tension sections, corner sections, and tower drainage areas, the spatial location of jumpers is complex. Affected by factors such as wind loads, galloping, temperature changes, and the impact of ice adhesion and detachment, jumpers are prone to periodic oscillations or instantaneous displacements, leading to dynamic changes in the relative distance between the conductor and surrounding components. If the spacing is too small or contact occurs, it may cause serious problems such as strand wear, hardware deformation, localized heating, discharge, and even fatigue fracture.

[0003] In existing technologies, solutions for maintaining jumper spacing mainly employ rigid connections or rigid support structures. While these solutions can effectively limit the installation position under static conditions, stress tends to concentrate and transfer to the clamping or connecting ends under impact loads or significant sway, leading to excessive local stress on the components. Furthermore, conventional jumper fittings are subjected to complex climatic and vibrational environments in transmission lines for extended periods, significantly impacting their lifespan and applicability.

[0004] Therefore, it is necessary to design a power transmission jumper spacer that can ensure the stability of the spacing between the conductor and adjacent components, absorb displacement impacts in a predetermined direction, reliably return to its original position after the external force is removed, and take into account the convenience of installation and easy maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide a linear sliding spring-loaded power transmission jumper spacer, which aims to solve the technical problem that existing jumper spacer holding devices, which use rigid connections or rigid support structures, are prone to stress concentration under dynamic loads, resulting in excessive local stress on components and affecting service life.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a linear sliding spring-loaded power transmission jumper spacer, comprising: Install clamps to hold the tower body side extension rods or connecting plates; Wire clamps are used to hold jumper wires. A buffer body is located between the mounting clamp and the conductor clamp. The buffer body has a cavity inside, and one end of its outer side is connected to the mounting clamp along its axial direction, while the other end has an opening. The buffer body includes an energy storage and reset component located in the cavity that elastically expands and contracts along the axial direction of the buffer body. It also includes a linear sliding rod with one end placed in the cavity and connected to the energy storage and reset component, and the other end passing through the opening and connected to the conductor clamp. The linear sliding rod slides linearly back and forth along the axial direction of the buffer body with the help of the energy storage and reset component. The buffer body is used to buffer the axial displacement of the conductor clamp relative to the mounting clamp under the action of external force.

[0007] In one possible implementation, a linear guide cylinder is provided inside the cavity. The linear guide cylinder is arranged along the axial direction of the buffer body and is fixedly connected to the inner wall of the buffer body at the end away from the opening. The length of the linear guide cylinder is less than the length of the buffer body. The energy storage and reset component is connected to the inner wall of the buffer body or the outer wall of the linear guide cylinder at the end away from the opening, and the energy storage and reset component is connected to the linear sliding rod at the end near the opening.

[0008] In one possible implementation, the linear sliding rod includes: A sliding rod, one end of which is slidably fitted inside the linear guide cylinder, and the other end passes through the opening and is connected to the wire clamp; A retaining ring is located inside the cavity and fixedly connected to the middle of the sliding rod. The retaining ring is coaxially arranged with the sliding rod and is connected to the end of the energy storage and reset assembly near the opening. The retaining ring has a degree of freedom to move axially along the linear guide cylinder by means of the elastic expansion and contraction of the energy storage and reset assembly.

[0009] In one possible implementation, the distance between the end of the linear guide cylinder near the opening and the inner wall of the buffer body on the side with the opening is defined as the buffer travel distance. The maximum elastic elongation of the energy storage and reset component is when the retaining ring contacts the inner wall of the buffer body on the side with the opening, and the maximum elastic retraction of the energy storage and reset component is when the retaining ring contacts the end of the linear guide cylinder near the opening. The retaining ring moves within the buffer travel distance.

[0010] In one possible implementation, the sliding rod extends out of the opening and has an external thread. An adjusting nut is threaded onto the sliding rod and connected to the external thread. The adjusting nut has a degree of freedom to move along the axial direction of the sliding rod. The adjusting nut is used to adjust the distance between the sliding rod and the outer wall of the buffer body, thereby adjusting the movement distance of the retaining ring under the elastic retraction of the energy storage and reset assembly.

[0011] In one possible implementation, the buffer body further includes: The housing has the cavity formed inside and is open at one end; An end cap is detachably connected to the open end of the housing, the end cap being used to seal the open end, and the opening being formed in the middle of the end cap.

[0012] In one possible implementation, the energy storage reset assembly includes an energy storage spring fitted on the outside of the linear guide cylinder, one end of which is fixedly connected to the inner wall of the buffer body, and the energy storage spring has a degree of freedom to extend and retract along the axial direction of the linear guide cylinder.

[0013] In one possible implementation, both the mounting clamp and the conductor clamp include: A fixed semi-circular ring is formed, with one end connected to the buffer body; The movable half-ring is in the shape of a semi-circular ring, with one end rotatably connected to the fixed half-ring. The movable half-ring can rotate relative to the fixed half-ring around its rotatable connection point with the fixed half-ring to form an open or closed state. A locking element is used to lock the movable half-ring to the fixed half-ring in the closed state.

[0014] In one possible implementation, both the mounting clamp and the wire clamp have inner circumferential surfaces provided with padding layers, which are used to reduce the squeezing and abrasion on the surface of the clamped object.

[0015] In one possible implementation, a dustproof component is provided inside the buffer body, which is used to seal the gap between the linear sliding rod and the inner wall of the opening.

[0016] The beneficial effects of the linear sliding spring-loaded power jumper spacer provided by the present invention are as follows: Compared with the prior art, the linear sliding rod slides linearly back and forth along the axial direction of the buffer body with the help of the energy storage and reset component. It can absorb displacement in a predetermined direction when the jumper is subjected to wind load, galloping or impact, and automatically return to its original position after the external force is removed, thereby ensuring the stability of the safe distance between the conductor and the surrounding components and avoiding local damage caused by unexpected swaying or wear.

[0017] Secondly, by combining linear sliding with elastic reset, the traditional rigid support structure is replaced, which effectively transforms the impact load into the internal energy storage and release process of the buffer body, avoids stress concentration transmission to the clamping end or connection end, and significantly reduces the risk of excessive local stress and fatigue fracture of the component.

[0018] Third, the internal cavity of the buffer body protects the energy storage and reset components. Combined with the guiding constraint of the linear sliding rod, it reduces abnormal wear under harsh working conditions such as vibration and ice shedding, and improves durability and applicability in long-term complex climate and vibration environments.

[0019] Fourth, the installation clamps and conductor clamps are respectively connected to the tower side extension rod (or connecting plate) and jumper wire. The buffer body is connected to the installation clamps and conductor clamps at both ends of the axial direction. The overall structure is simple, the on-site installation and positioning are convenient, no complicated debugging is required, and it is easy to disassemble and assemble. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the linear sliding spring-loaded power transmission jumper spacer provided in an embodiment of the present invention; Figure 2 This is a front view of the linear sliding spring-loaded power transmission jumper spacer provided in an embodiment of the present invention; Figure 3 This is a top view of the linear sliding spring-loaded power transmission jumper spacer provided in an embodiment of the present invention; Figure 4 for Figure 1 The diagram shows a side view of the linear sliding spring-loaded power jumper spacer.

[0022] Explanation of reference numerals in the attached figures: 1. Installation clamp; 11. Fixed half ring; 12. Movable half ring; 13. Locking element; 14. Hinge shaft; 15. Padding layer; 2. Wire clamp; 3. Buffer body; 31. Opening; 32. Energy storage and reset assembly; 33. Linear sliding rod; 331. Sliding rod; 332. Retaining ring; 34. Linear guide cylinder; 35. Base; 36. Adjusting nut; 37. Housing; 38. End cap; 39. Fastener. Detailed Implementation

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0029] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] Currently, in tension sections and corner tower drainage areas, jumper wires are prone to periodic swaying or instantaneous displacement due to wind vibration, galloping, and icing impacts, which may cause strand wear, hardware deformation, discharge, or even breakage. Existing spacer retention solutions mostly use rigid connections or support structures, which can limit movement under static conditions, but under dynamic loads, stress easily concentrates at the clamping end, leading to excessive local stress; moreover, they are exposed to complex climate and vibration environments for extended periods, resulting in significantly insufficient lifespan and applicability. Therefore, there is an urgent need for a jumper wire spacer that can absorb displacement impacts along a predetermined direction, reliably return to its original position, and is also convenient to install and maintain.

[0032] To address the aforementioned technical problems, this application provides a linear sliding spring-loaded transmission jumper spacer. The following is a detailed description of the linear sliding spring-loaded transmission jumper spacer provided in this application, with reference to the accompanying drawings.

[0033] Please refer to the following: Figures 1 to 4 The linear sliding spring-loaded power transmission jumper spacer includes a mounting clamp 1, a conductor clamp 2, and a buffer body 3.

[0034] The mounting clamp 1 is used to hold the tower side extension rod or connecting plate; the conductor clamp 2 is used to hold the jumper wire; the buffer body 3 is located between the mounting clamp 1 and the conductor clamp 2. The buffer body 3 forms a cavity inside, and its outer side is connected to the mounting clamp 1 at one end along its axial direction and has an opening 31 at the other end. The buffer body 3 includes an energy storage and reset component 32 located in the cavity and elastically expands and contracts along the axial direction of the buffer body 3. It also includes a linear sliding rod 33 with one end placed in the cavity and connected to the energy storage and reset component 32, and the other end passing through the opening 31 and connected to the conductor clamp 2. The linear sliding rod 33 slides linearly back and forth along the axial direction of the buffer body 3 with the help of the energy storage and reset component 32. The buffer body 3 is used to buffer the axial displacement of the conductor clamp 2 relative to the mounting clamp 1 under the action of external force. The energy storage and reset component 32 enables a buffered movement between the conductor clamp 2 and the mounting clamp 1, while the linear sliding rod 33 remains within the energy storage and reset component 32. The natural length of the energy storage and reset component 32 within the buffer body 3, after uncompressed and unstretched conditions, is less than the length of the buffer body 3 (cavity). This allows the energy storage and reset component 32 to stretch and shorten within the cavity. During these stretching and compression processes, the moving force between the mounting clamp 1 and the conductor clamp 2 is buffered and absorbed, ensuring a stable safe distance between the conductor and surrounding components. The linear sliding rod 33 passes through the opening 31 and slides along its extension direction. Under the action of the energy storage and reset component 32, it slides or moves axially, thus maintaining the spacing.

[0035] This invention is particularly applicable to maintaining a safe distance between jumpers, drain lines and adjacent components (such as extension rods, connecting plates, tension fittings or adjacent conductors) in high-voltage, ultra-high-voltage and extra-high-voltage transmission lines.

[0036] Mounting clamp 1 is used to hold the tower side extension rod, connecting plate, or other supporting components. Conductor clamp 2 is used to hold jumpers or other conductors requiring spacing. Buffer body 3 provides guidance, energy storage, rebound, and stroke limitation functions, and is the core component of this invention for achieving spacing maintenance and buffer protection. Buffer body 3 is cylindrical or cylindrical in shape, with an opening 31 at the end near the guide clamp. The outer diameter of mounting clamp 1 is smaller than the outer diameter of conductor clamp 2. Mounting clamp 1 is stable after connection to its connected components, and conductor clamp 2 is also stable after connection to its connected components.

[0037] The beneficial effects of the linear sliding spring-loaded power jumper spacer provided by the present invention are as follows: Compared with the prior art, the linear sliding rod 33 slides linearly back and forth along the axial direction of the buffer body 3 with the help of the energy storage and reset component 32. It can absorb displacement in a predetermined direction when the jumper is subjected to wind load, galloping or impact, and automatically return to its original position after the external force is removed, thereby ensuring the stability of the safe distance between the conductor and the surrounding components and avoiding local damage caused by unexpected swaying or wear.

[0038] Secondly, by combining linear sliding with elastic reset, the traditional rigid support structure is replaced, effectively transforming the impact load into the internal energy storage and release process of the buffer body 3, avoiding stress concentration transmission to the clamping end or connection end, and significantly reducing the risk of excessive local stress and fatigue fracture of the component.

[0039] Third, the internal cavity of the buffer body 3 protects the energy storage and reset component 32. Combined with the guiding constraint of the linear sliding rod 33, it reduces abnormal wear under harsh working conditions such as vibration and ice shedding, and improves durability and applicability in long-term complex climate and vibration environments.

[0040] Fourth, the installation clamp 1 and conductor clamp 2 are respectively connected to the tower side extension rod (or connecting plate) and jumper wire. The buffer body 3 is connected to the installation clamp 1 and conductor clamp 2 at both ends of the axial direction. The overall structure is simple, the on-site installation and positioning are convenient, no complicated debugging is required, and it is easy to disassemble and assemble.

[0041] Please refer to the following: Figures 1 to 4A linear guide cylinder 34 is installed inside the cavity. The linear guide cylinder 34 is arranged axially along the buffer body 3, and its end away from the opening 31 is fixedly connected to the inner wall of the buffer body 3. The length of the linear guide cylinder 34 is less than the length of the buffer body 3. The energy storage and reset component 32 is connected to the inner wall of the buffer body 3 or the outer wall of the linear guide cylinder 34 at its end away from the opening 31, and to the linear sliding rod 33 at its end near the opening 31. One end of the linear guide cylinder 34 is fixedly connected to the inner wall of the cavity, and the other end is cantilevered, allowing one end of the linear sliding rod 33 to be inserted and slid.

[0042] Preferably, a base 35 is fixedly installed on the inner wall of the cavity, and one end of the linear guide cylinder 34 is fixedly connected to the base 35. One end of the energy storage and reset component 32 abuts against the side of the base 35 near the linear guide cylinder 34, and is also arranged around the circumference of the base 35. The base 35 is cylindrical and has a base plate fixedly connected to one end, wherein the base plate is fixedly connected to the inner wall of the cavity (the inner wall near the side where the clamp 1 is installed).

[0043] The linear guide cylinder 34 is coaxially arranged with the buffer body 3. The outer diameter of the linear guide cylinder 34 is smaller than the inner diameter of the buffer body 3. The space formed between the two is used to accommodate the energy storage and reset component 32, which allows the energy storage and reset component 32 to elastically extend and retract along the axial direction of the linear guide cylinder 34. This enables the linear sliding rod 33 to move along the axial direction of the buffer body 3, thereby buffering and absorbing the displacement between the mounting clamp 1 and the wire clamp 2.

[0044] The linear sliding rod 33 includes a sliding section and a connecting section. The sliding section passes through the linear guide cylinder 34 and slides against the inner wall of the linear guide cylinder 34. The connecting section is located outside the buffer body 3 and is fixedly connected to the wire clamp 2. The outer diameter of the sliding section is adapted to the inner diameter of the linear guide cylinder 34 to ensure that the linear sliding rod 33 maintains axial stability during the sliding process and avoids radial displacement.

[0045] Please refer to the following: Figures 2 to 3 The linear sliding rod 33 includes a sliding rod 331 and a retaining ring 332. One end of the sliding rod 331 is slidably sleeved inside the linear guide cylinder 34, and the other end passes through the opening 31 and is connected to the wire clamp 2. The retaining ring 332 is located in the cavity and is fixedly connected to the middle of the sliding rod 331. The retaining ring 332 is coaxially arranged with the sliding rod 331. The retaining ring 332 is connected to the end of the energy storage and reset assembly 32 near the opening 31. The retaining ring 332 has a degree of freedom of movement along the axial direction of the linear guide cylinder 34 by means of the elastic expansion and contraction of the energy storage and reset assembly 32. The retaining ring 332 is circular and is fitted on the outer wall of the sliding rod 331.

[0046] The outer diameter of the retaining ring 332 is larger than the inner diameter of the linear guide cylinder 34. The retaining ring 332 connects to the energy storage reset assembly 32 and can move axially along the linear guide cylinder 34. The movement of the retaining ring 332 is controlled by the elastic expansion and contraction of the energy storage reset assembly 32, thus providing a buffer space for the axial movement between the mounting clamp 1 and the wire clamp 2. When the energy storage reset assembly 32 elastically elongates and reaches its maximum elongation, the retaining ring 332 abuts against the side of the inner wall of the buffer body 3 near the opening 31 to prevent the sliding rod 331 from completely dislodging from the linear guide cylinder 34 during sliding, thus limiting the maximum elongation. When the retaining ring 332 abuts against the end of the linear guide cylinder 34 near the opening 31, this represents the maximum compression of the elastic compression of the energy storage reset assembly 32. Meanwhile, the setting of the retaining ring 332 provides a stable force application point for the energy storage reset component 32. When relative displacement occurs between the mounting clamp 1 and the wire clamp 2, the sliding rod 331 drives the retaining ring 332 to compress or stretch the energy storage reset component 32. The energy storage reset component 32 then applies a reverse elastic force to the sliding rod 331 through the retaining ring 332, thereby realizing the buffering and reset functions.

[0047] The outer diameter of the sliding rod 331 is smaller than the inner diameter of the opening 31, which allows the sliding rod 331 to move axially. The sliding rod 331 will not slip out of the opening 31, but can only slide within the opening 31.

[0048] Please refer to the following: Figures 2 to 3 The buffer travel distance is defined as the distance between the end of the linear guide cylinder 34 near the opening 31 and the inner wall of the buffer body 3 on the side with the opening 31. The maximum elastic elongation of the energy storage and reset component 32 occurs when the retaining ring 332 contacts the inner wall of the buffer body 3 on the side with the opening 31; the maximum elastic retraction of the energy storage and reset component 32 occurs when the retaining ring 332 contacts the end of the linear guide cylinder 34 near the opening 31. The retaining ring 332 moves within the buffer travel distance. The distance or length of the retaining ring 332's movement is the amount of elastic deformation of the energy storage and reset component 32. This buffer travel distance can be reasonably set according to actual conditions; that is, the length of the linear guide cylinder 34 and the length of the energy storage and reset component 32 can be reasonably set to allow them to work together to adjust the buffer travel distance.

[0049] To adjust the buffer travel distance, please refer to the following: Figures 2 to 3 The sliding rod 331 extends out of the outer wall of the opening 31 and is provided with an external thread. An adjusting nut 36 is threadedly connected to the sliding rod 331 and the external thread. The adjusting nut 36 has a degree of freedom to move along the axial direction of the sliding rod 331. The adjusting nut 36 is used to adjust the distance between it and the outer wall of the buffer body 3, thereby adjusting the movement distance of the retaining ring 332 under the elastic retraction of the energy storage and reset component 32.

[0050] The external thread is located on the outer wall of the sliding rod 331 near the wire clamp 2 and is spirally arranged. Its purpose is to install the adjusting nut 36. After installation, the adjusting nut 36 and the external thread are screwed together. By turning the adjusting nut 36, the adjusting nut 36 can be moved axially along the sliding rod 331, thereby adjusting the distance between the adjusting nut 36 and the outer wall of the buffer body 3. That is, when the energy storage reset component 32 retracts, when the adjusting nut 36 touches the buffer body 3, the retraction stroke of the energy storage reset component 32 is limited, thus adjusting the buffer movement stroke of the energy storage reset component 32.

[0051] To enable the detachable design of the buffer body 3, and to facilitate the disassembly and assembly of the linear guide cylinder 34, energy storage and reset assembly 32, linear sliding rod 33, etc., please refer to the following: Figures 2 to 3 The buffer body 3 also includes a housing 37 and an end cap 38. The housing 37 has an internal cavity and is open at one end; the end cap 38 is detachably connected to the open end of the housing 37 and is used to seal the open end, with an opening 31 formed in the middle of the end cap 38. The housing 37 is cylindrical, and the end cap 38 is provided with four fasteners 39, which are connected to the housing 37 to fix the end cap 38 to the housing 37, thereby forming a whole.

[0052] During assembly, first install the linear guide cylinder 34 inside the housing 37, then install the energy storage and reset assembly 32 and the linear sliding rod 33 in sequence, and finally connect the end cap 38 to the housing 37 to ensure that the linear sliding rod 33 passes through the opening 31 and can slide within the opening 31. When it is necessary to disassemble or assemble the buffer body 3, the operation is reversed, which will not be explained here.

[0053] Please refer to the following: Figures 2 to 3 The energy storage and reset assembly 32 includes an energy storage spring fitted on the outside of the linear guide cylinder 34. One end of the energy storage spring is fixedly connected to the inner wall of the buffer body 3, and the energy storage spring has the freedom to extend and retract along the axial direction of the linear guide cylinder 34. The energy storage spring is a type of spring in the prior art, fitted on the outer wall of the linear guide cylinder 34. Under normal circumstances, when the energy storage spring is not under force in its natural state, its length is greater than the length of the linear guide cylinder 34. When the energy storage spring is compressed, its length is less than the length of the linear guide cylinder 34. When the energy storage spring is extended, its length is greater than the length of the linear guide cylinder 34.

[0054] Specifically, the linear guide cylinder 34 provides a guiding function for the elastic extension and retraction of the energy storage spring, so that the energy storage spring can only extend and retract along the axial direction of the linear guide cylinder 34.

[0055] As an alternative embodiment described above, the energy storage reset assembly 32 includes at least two elastic units arranged sequentially along the axial direction. Each elastic unit has a different elastic stiffness, and the free length and / or pre-compression amount of each elastic unit are different. This results in the overall stiffness of the energy storage reset assembly 32 gradually increasing with the increase of displacement during the compression stroke of the linear sliding rod 33, forming a nonlinear elastic characteristic of low stiffness buffering with small displacement and high stiffness support with large displacement.

[0056] The aforementioned variable stiffness design achieves a nonlinear buffering characteristic that automatically increases stiffness with increasing displacement, solving the problems faced by power transmission jumpers simultaneously: micro-wind vibration (small amplitude, high frequency) and wind-induced galloping (ice shedding impact, large amplitude, low frequency). Micro-wind vibration requires the spacer to be sufficiently flexible to isolate vibration transmission. Wind-induced galloping or ice shedding impact requires the spacer to be sufficiently rigid to prevent conductors from colliding with surrounding components. Low stiffness at small displacements prevents vibration transmission to conductors and fittings, reducing fatigue wear; high stiffness at large displacements effectively limits maximum offset, preventing dangerous proximity between conductors and towers or extension rods. Simultaneously, the progressively increasing stiffness avoids the rigid impact of traditional springs when fully compressed. In the field of power transmission jumper spacing, constant stiffness springs have long been used; the technology to apply variable stiffness springs to this scenario does not yet exist. While variable stiffness springs are common in vehicle suspensions and shock absorbers, their application in outdoor high-voltage power transmission fittings requires overcoming technical difficulties such as spring weather resistance, spatial arrangement, and long-term reliability. Its technical effects are: it improves the adaptability of the spacer to different working conditions, reduces the dynamic stress of the conductor, and extends the life of the fittings and conductor.

[0057] For ease of installation and opening / closing of clamp 1 and wire clamp 2, and for securing and fixing objects connected to them, please refer to the following: Figures 1 to 3 Both the mounting clamp 1 and the wire clamp 2 include a fixed half-ring 11, a movable half-ring 12, and a locking element 13. The fixed half-ring 11 is semi-circular, with one end connected to the buffer body 3; the movable half-ring 12 is semi-circular, with one end rotatably connected to the fixed half-ring 11. The movable half-ring 12 can rotate relative to the fixed half-ring 11 around its rotatable connection point to form an open or closed state; the locking element 13 is used to lock the movable half-ring 12 to the fixed half-ring 11 in the closed state.

[0058] In this embodiment, both the mounting clamp 1 and the wire clamp 2 adopt an openable ring-shaped clamping structure. During installation, the movable half-ring 12 can be opened relative to the fixed half-ring 11, allowing the clamped component to enter the installation space enclosed by the fixed half-ring 11 and the movable half-ring 12. After closing, a reliable lock is achieved using the locking member 13.

[0059] The fixed half-ring 11 is connected to one end of the housing 37 or the extended end of the linear sliding rod 33, and its position is fixed. A hinge shaft 14 is provided at the connection point. One end of the movable half-ring 12 is connected to the hinge shaft 14, so the movable half-ring 12 can rotate around the hinge shaft 14. After rotation, it combines with the fixed half-ring 11 to form two states: open or closed. When open, the movable half-ring 12 and the fixed half-ring 11 are separated from each other, and their opening angle is adjustable. When closed, the movable half-ring 12 and the fixed half-ring 11 are brought close to each other and form a ring structure. After closing, a locking element can be used to pass through the movable half-ring 12 and the fixed half-ring 11 to fasten the two ends away from the hinge shaft 14, thereby forming a whole structure, and the clamped component is fixed inside the installation space.

[0060] Please refer to the following: Figures 1 to 2 A padding layer 15 is provided on the inner circumferential surface of both the mounting clamp 1 and the conductor clamp 2. The padding layer 15 is used to reduce the extrusion and wear on the surface of the clamped object. The padding layer 15 can be made of wear-resistant insulating rubber, polymer elastomer or composite weather-resistant material to balance the clamping friction and conductor surface protection requirements.

[0061] The padding layer 15 consists of two sets, which are respectively connected to the inner sidewalls of the movable semi-ring 12 and the fixed semi-ring 11.

[0062] Please refer to the following: Figures 2 to 3 A dustproof component (existing technology, not shown in the figure) is installed inside the buffer body 3. The dustproof component is used to seal the gap between the linear sliding rod 33 and the inner wall of the opening 31. The dustproof component is a sealing ring that seals the gap and is fitted onto the inner wall of the opening 31. It is adapted to the shape of the opening 31 (the opening 31 is circular) and does not affect the axial movement of the linear sliding rod 33. The sealing ring and the linear sliding rod 33 are in sliding sealing contact to ensure the sealing effect.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A linear sliding spring-loaded power transmission jumper spacer, characterized in that, include: Install clamps to hold the tower body side extension rods or connecting plates; Wire clamps are used to hold jumper wires. A buffer body is located between the mounting clamp and the conductor clamp. The buffer body has a cavity inside, and one end of its outer side is connected to the mounting clamp along its axial direction, while the other end has an opening. The buffer body includes an energy storage and reset component located in the cavity that elastically expands and contracts along the axial direction of the buffer body. It also includes a linear sliding rod with one end placed in the cavity and connected to the energy storage and reset component, and the other end passing through the opening and connected to the conductor clamp. The linear sliding rod slides linearly back and forth along the axial direction of the buffer body with the help of the energy storage and reset component. The buffer body is used to buffer the axial displacement of the conductor clamp relative to the mounting clamp under the action of external force.

2. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, A linear guide cylinder is provided inside the cavity. The linear guide cylinder is arranged along the axial direction of the buffer body and is fixedly connected to the inner wall of the buffer body at the end away from the opening. The length of the linear guide cylinder is less than the length of the buffer body. The energy storage and reset component is connected to the inner wall of the buffer body or the outer wall of the linear guide cylinder at the end away from the opening. The energy storage and reset component is connected to the linear sliding rod at the end near the opening.

3. The linear sliding spring-loaded power transmission jumper spacer as described in claim 2, characterized in that, The linear sliding rod includes: A sliding rod, one end of which is slidably fitted inside the linear guide cylinder, and the other end passes through the opening and is connected to the wire clamp; A retaining ring is located inside the cavity and fixedly connected to the middle of the sliding rod. The retaining ring is coaxially arranged with the sliding rod and is connected to the end of the energy storage and reset assembly near the opening. The retaining ring has a degree of freedom to move axially along the linear guide cylinder by means of the elastic expansion and contraction of the energy storage and reset assembly.

4. The linear sliding spring-loaded power transmission jumper spacer as described in claim 3, characterized in that, The distance between the end of the linear guide cylinder near the opening and the inner wall of the buffer body on the side with the opening is defined as the buffer travel distance. When the retaining ring contacts the inner wall of the buffer body on the side with the opening, it is the maximum elastic elongation of the energy storage and reset component. When the retaining ring contacts the end of the linear guide cylinder near the opening, it is the maximum elastic retraction of the energy storage and reset component. The retaining ring moves within the buffer travel distance.

5. The linear sliding spring-loaded power transmission jumper spacer as described in claim 3, characterized in that, The sliding rod extends out of the opening and has an external thread. An adjusting nut is threaded onto the sliding rod and connected to the external thread. The adjusting nut has a degree of freedom to move along the axial direction of the sliding rod. The adjusting nut is used to adjust the distance between the sliding rod and the outer wall of the buffer body, thereby adjusting the movement distance of the retaining ring under the elastic retraction of the energy storage and reset assembly.

6. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, The buffer body also includes: The housing has the cavity formed inside and is open at one end; An end cap is detachably connected to the open end of the housing, the end cap being used to seal the open end, and the opening being formed in the middle of the end cap.

7. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, The energy storage and reset assembly includes an energy storage spring fitted on the outside of the linear guide cylinder. One end of the energy storage spring is fixedly connected to the inner wall of the buffer body, and the energy storage spring has a degree of freedom to extend and retract along the axial direction of the linear guide cylinder.

8. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, Both the mounting clamp and the conductor clamp include: A fixed semi-circular ring is formed, with one end connected to the buffer body; The movable half-ring is in the shape of a semi-circular ring, with one end rotatably connected to the fixed half-ring. The movable half-ring can rotate relative to the fixed half-ring around its rotatable connection point with the fixed half-ring to form an open or closed state. A locking element is used to lock the movable half-ring to the fixed half-ring in the closed state.

9. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, Both the mounting clamp and the wire clamp have a padding layer on their inner circumferential surfaces, which is used to reduce the squeezing and wear on the surface of the clamped object.

10. The linear sliding spring-loaded power transmission jumper spacer as described in claim 1, characterized in that, The buffer body is provided with a dustproof component, which is used to seal the gap between the linear sliding rod and the inner wall of the opening.

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