Lightning protection device for electrification equipment of a railway siding

Abstract

The utility model discloses an electrification equipment lightning protection device of railway special line, including bearing seat, the top fixed mounting of bearing seat has the support rod, the top of support rod has seted up the locating slot, the inside bushing of locating slot has the locating column, the top fixed connection of locating column has the baffle cap for preventing rainwater from entering the locating slot, the top fixed mounting of baffle cap has the lightning rod, the both sides top of support rod all has seted up the rectangular hole, and the inner chamber of two rectangular holes all sliding bushing has the clamping strip, and the both sides of locating column and located the position of corresponding side clamping strip end part seted up the clamping groove that supplies clamping strip end part to connect, the both sides top of support rod all is provided with the pusher that the corresponding side clamping strip is pushed to make its end part respectively connects in the corresponding side clamping groove inside, and the utility model discloses through.

Description

Technical Field

[0001] This utility model relates to the technical field of lightning protection devices for electrification equipment on railway sidings, specifically a lightning protection device for electrification equipment on railway sidings. Background Technology

[0002] As a crucial transportation channel connecting main railway lines with factories, mines, enterprises, ports, and other areas, the stable operation of the electrification equipment (including traction substations, overhead contact lines, feeder cables, signal control systems, and power distribution equipment) directly determines the efficiency and safety of material transportation. This equipment is exposed to the complex outdoor environment for extended periods and is susceptible to lightning strikes. The instantaneous overvoltages and overcurrents generated by lightning strikes can couple into the equipment through transmission lines, grounding systems, or electromagnetic induction, leading to insulation breakdown, burnt-out electronic components, and control module failures. In severe cases, this can cause overhead contact line tripping, transportation interruptions, and even permanent equipment damage, resulting in significant economic losses and safety risks.

[0003] Currently, Chinese patent CN219760247U discloses a lightning protection device for railway traction power supply equipment, including a base with fixing bolts penetrating its surface, a vertical pole mounted on its surface, a fixing rod mounted at one end of the vertical pole, a lightning rod mounted at one end of the fixing rod, a locking pin mounted at one end of a first spring, and a fixing block slidably installed inside the fixing hole, with a limit hole formed on the surface of the fixing block. This utility model provides a lightning protection device for railway traction power supply equipment with an installation mechanism. When the lightning rod needs to be replaced during use, the new lightning rod is installed by aligning it with the fixing hole and fixing rod via the fixing block. The first spring pushes the locking pin into the limit hole to fix the position of the fixing block, completing the installation of the lightning rod and fixing rod. This installation method is simpler and more efficient than traditional methods, improving installation convenience.

[0004] The aforementioned lightning protection devices for railway traction power supply systems have some problems in actual use. The installation mechanism relies on springs to push the locking pins for fixation. After long-term exposure to wind, rain, and temperature changes outdoors, the springs may corrode or lose elasticity, and the locking pin holes may become clogged with dirt. These factors can lead to locking failure, and the lightning rod may loosen or tip over in severe weather. Utility Model Content

[0005] The purpose of this utility model is to provide a lightning protection device for electrification equipment on a dedicated railway line, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A lightning protection device for electrification equipment on a dedicated railway line includes a support base. A support rod is fixedly installed on the top of the support base. A positioning groove is formed on the top of the support rod. A positioning post is inserted into the positioning groove. A shielding cap for preventing rainwater from entering the positioning groove is fixedly connected to the top of the positioning post. A lightning rod is fixedly installed on the top of the shielding cap. Rectangular holes are formed on both sides of the top of the support rod. A locking strip is slidably inserted into the inner cavity of both sets of rectangular holes. A locking groove for locking the ends of the locking strip is formed on both sides of the positioning post at the corresponding end of the locking strip. A pushing member is provided on both sides of the top of the support rod to push the corresponding locking strip inward so that its ends are respectively locked into the corresponding locking groove.

[0007] As a preferred technical solution, the pushing component includes linkage bars respectively disposed on both sides of the top of the support rod. The opposite ends of the two sets of linkage bars are respectively connected to the corresponding side surfaces of the support rod through rotating connectors. Linkage rectangular rings are fixedly connected to the front and rear sides of the top of the opposite ends of the two sets of linkage bars. Linkage rods are slidably connected to the inner cavities of the two sets of linkage rectangular rings on the same side. The opposite ends of the two sets of linkage rods on the same side are respectively fixedly connected to the corresponding side surfaces of the outer ends of the clips. The opposite ends of the two sets of linkage bars extend outward. A push-pull component is disposed on the surface of the support rod and below the two sets of linkage bars. Connectors for connecting to the outer ends of the corresponding side linkage bars are disposed at the top of both ends of the push-pull component. The rotating connector includes rotating rods fixedly connected to the front and rear sides of opposite ends of the two sets of linkage bars. The surfaces of the two sets of rotating rods on the same side are rotatably fitted with transition rings, and the opposite sides of the two sets of transition rings on the same side are respectively fixedly connected to the corresponding side surfaces of the support rod.

[0008] As a preferred technical solution, the push-pull component includes an external thread on the surface of the support rod, and an internal thread tube is threadedly connected to the surface of the support rod via the external thread. A connecting ring is rotatably connected to the top of the internal thread tube.

[0009] As a preferred technical solution, the connecting member includes pull bars respectively disposed on the top of both sides of the support rod, and adapter rods are fixedly connected to both ends of the two sets of pull bars. Positioning rings are rotatably sleeved on both ends of the two sets of adapter rods. The tops of the four sets of positioning rings located above are fixedly connected to the bottom ends of the outer side of the corresponding side linkage bar, and the opposite sides of the four sets of positioning rings located below are fixedly connected to the opposite side surface of the connecting ring.

[0010] As a preferred technical solution, a groove is provided at the upper opening of the connecting ring, and a sealing ring is embedded in the inner cavity of the groove. The inner ring of the sealing ring is fitted onto the surface of the support rod.

[0011] As a preferred technical solution, the rear inner wall of the positioning groove is provided with a guide groove that is set along the height, and a guide strip is slidably inserted into the inner cavity of the guide groove. One side of the guide strip is fixedly installed on the rear surface of the positioning post.

[0012] As a preferred technical solution, a protective tube is fixedly installed at the bottom of the internally threaded tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves a stable connection between the positioning column and the support rod through the setting of the locking strip, the locking groove, the pushing part, and the shielding cap. The mechanical locking of the locking strip and the locking groove and the pushing action of the pushing part facilitate the installation and disassembly. Compared with the structure that relies on the spring to push and fix, it avoids the problems of the spring being prone to rust and elasticity decay after long-term outdoor use, and the locking pin hole being easily blocked by dirt. It effectively eliminates the risk of locking failure, reduces the possibility of the lightning rod loosening or tipping over in severe weather, and the shielding cap can effectively prevent rainwater from entering the positioning groove, preventing the internal components from being corroded by rainwater.

[0014] 2. This utility model, through the cooperation of the linkage bar, rotating connector, linkage rectangular ring and linkage rod, can stably transmit power and realize the precise movement of the locking bar, ensuring that the locking bar and the locking groove can be reliably engaged or disengaged, improving the stability of the positioning post and the ease of operation. The rotational cooperation between the rotating rod and the adapter ring in the rotating connector makes the rotation of the linkage bar more flexible and smooth, ensuring the stability of the overall transmission and reducing jamming during the transmission process.

[0015] 3. This utility model uses a push-pull component and an external thread to connect the internal thread tube. By rotating the internal thread tube, it can move up and down along the support rod. The operation is simple and convenient. In addition, the threaded connection has self-locking properties, which can ensure the stability of the internal thread tube after movement, thereby ensuring the reliable fixing effect of the locking strip on the positioning post. At the same time, the connecting ring is rotatably connected to the internal thread tube, which prevents the connecting parts from twisting when the internal thread tube rotates, thus ensuring the smooth power transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the lightning protection device for electrification equipment on a dedicated railway line according to this utility model. Figure 2 This is a schematic diagram of the location structure of the positioning groove in this utility model; Figure 3 This is a cross-sectional view of the support rod of this utility model; Figure 4 This is a schematic diagram showing the structural location of the guide groove in this utility model; Figure 5 This is a schematic diagram of the structure of the guide strip of this utility model.

[0017] In the picture: 100. Bearing base; 101. Support rod; 102. Shielding cap; 103. Lightning rod; 104. Rectangular hole; 105. Positioning groove; 106. Guide groove; 107. Slot; 108. Positioning post; 109. Guide strip; 200. External thread; 201. Internal threaded pipe; 202. Connecting ring; 203. Pull bar; 204. Adapter rod; 205. Positioning ring; 206. Linkage bar; 207. Rotating rod; 208. Linkage rectangular ring; 209. Linkage rod; 210. Locking strip; 211. Groove; 212. Sealing ring; 213. Adapter ring; 300. Protective tube. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4This embodiment provides a lightning protection device for electrification equipment on a dedicated railway line, including a support base 100. The support base 100 is made of Q235B galvanized steel plate (thickness ≥10mm, salt spray corrosion resistance ≥5000h). The bottom is fixedly connected to the equipment foundation of the dedicated railway line (such as the top of the traction substation wall or the contact wire support base) by four sets of M16 hot-dip galvanized anchor bolts. Two 50×5mm hot-dip galvanized flat steel bars are welded to the bottom of the support base 100, with one end of each bar extending to the grounding electrode (using Φ50×2). A galvanized steel pipe, 0.5mm thick and 2.5m long, with a vertical burial depth ≥0.8m, is used to form an electrical path through exothermic welding, ensuring a grounding resistance ≤4Ω (complying with the grounding requirements for railway electrification equipment in GB50057-2010 "Code for Design of Lightning Protection of Buildings"). This achieves rapid discharge of lightning after it is attracted by the lightning rod, preventing damage to the equipment from lightning current backflash. A support rod 101 is fixedly installed on the top of the bearing seat 100. The support rod 101 is made of Φ80×5mm seamless galvanized steel pipe (yield strength ≥235MPa), with a length of approximately 1.5mm. The height of the protected equipment is set according to the requirements (ensuring that the top of the lightning rod is 3-5m higher than the top of the protected electrified equipment (such as contact wire insulators and signal machines) to meet the requirements of the rolling sphere method for lightning protection range). A 150mm diameter mounting flange is welded to the middle of the support rod 101 for fixing the zinc oxide surge arrester (selection: rated voltage 10kV, residual voltage ≤26kV, conforming to GB11032-2020 "AC Gapless Metal Oxide Surge Arresters"). The surge arrester input terminal is connected to the bottom terminal of the lightning rod 103 via a 16mm² copper cable. The output end is connected to the grounding flat steel of the bearing seat 100 via a copper cable of the same specification, forming a complete lightning protection path of "lightning rod-lightning arrester-grounding electrode" to suppress the induced overvoltage generated by lightning strikes from entering the equipment along the support rod; the top of the support rod 101 is provided with a positioning groove 105, and a positioning post 108 is inserted into the positioning groove 105. The positioning post 108 is made of solid galvanized round steel with a diameter of Φ60×8mm (tensile strength ≥400MPa), and its length is 200-300mm. The clearance between the positioning post 108 and the positioning groove 105 is controlled at 0.5-1mm, ensuring no radial wobble after insertion, to prevent displacement of the positioning post caused by vibration from passing railway trains; a shield cap 102 is fixedly connected to the top of the positioning post 108 to prevent rainwater from entering the positioning groove 105. The shield cap 102 is made of FRP composite material (weather resistance grade ≥C4, high temperature resistance ≥120℃), with an umbrella-shaped structure (umbrella diameter ≥200mm, umbrella skirt tilt angle 30°), and its edge extends more than 50mm beyond the outer wall of the support rod 101. Weather-resistant sealant (aging resistance life ≥10 years) is applied at the connection between the shield cap 102 and the positioning post 108 to completely prevent rainwater and snow from seeping into the positioning groove 105; a lightning rod 103 is fixedly installed on the top of the shield cap 102. The lightning rod 103 is Φ20× A 3mm thick T2 copper rod (conductivity ≥58MS / m) is machined into a conical shape at the top (cone angle 30°, facilitating tip discharge). The surface is passivated (passivation film thickness ≥5μm). The bottom is fixed to the shielding cap 102 by four sets of M8 stainless steel bolts, with copper flat washers and spring washers added at the bolt connections to prevent loosening due to railway vibration. Rectangular holes 104 are provided on both sides of the support rod 101, each 20×8mm (length×width). The inner walls are polished (roughness Ra≤1.6μm), and the edges of the holes are rounded (radius 1mm) to avoid scratching the retaining strip 210. Retaining strips 210 are slidably inserted into the inner cavities of both sets of rectangular holes 104. The retaining strips 210 are made of... The steel used is 45# steel (galvanized and passivated), with a 7×7mm square cross-section and 15° chamfered ends for quick insertion into the slot 107. A Φ5mm grease injection hole is provided on the outer end of the locking strip 210 for periodic application of lithium-based grease (temperature resistant -20℃~120℃) to prevent slippage and jamming caused by outdoor dust and rain. Slots 107 are provided on both sides of the positioning post 108 at the corresponding ends of the locking strip 210 for engaging the ends of the locking strip 210. The slots 107 are 15mm deep and their width matches the locking strip 210 (gap ≤0.2mm). The inner wall of the slots 107 is coated with anti-rust oil to prevent rust and adhesion caused by long-term insertion. The top of both sides of the support rod 101 is equipped with… Pushing the corresponding side locking strip 210 inward causes its ends to engage with the pusher components inside the corresponding side locking groove 107. Through the arrangement of the locking strip 210, the locking groove 107, the pusher components, and the shielding cap 102, the mechanical engagement of the locking strip 210 with the locking groove 107 and the pushing action of the pusher components achieve a stable connection between the positioning post 108 and the support rod 101. This facilitates installation and disassembly. Compared to structures relying on spring-driven locking, this avoids the problems of springs easily corroding and losing elasticity over long-term outdoor use, and the locking pin holes easily becoming clogged with dirt. It effectively eliminates the risk of locking failure, reduces the possibility of the lightning rod 103 loosening or tipping over in severe weather, and, combined with the shielding cap 102, effectively prevents rainwater from entering the positioning groove 105, avoiding water corrosion of internal components.

[0020] The pushing component includes linkage bars 206 respectively set on both sides of the top of the support rod 101. The linkage bars 206 are made of 65Mn spring steel (thickness 5mm, width 30mm) and the surface is phosphated (phosphating film thickness ≥8μm), which has good elasticity and fatigue resistance, avoiding breakage caused by long-term swinging. The opposite ends of the two sets of linkage bars 206 are respectively connected to the corresponding side surfaces of the support rod 101 through rotating connectors. The top front and rear sides of the opposite ends of the two sets of linkage bars 206 are fixedly connected to linkage rectangular rings 208. The linkage rectangular rings 208 are made of stainless steel plate (thickness 2mm) stamped and formed, with an inner hole size of 12×8mm, and the inner hole edge is bonded with 0.5mm thick polytetrafluoroethylene. Ethylene gaskets (friction coefficient ≤ 0.1) reduce sliding friction with linkage rod 209; the inner cavities of the two sets of linkage rectangular rings 208 on the same side are slidably connected to linkage rods 209, which are made of Φ6mm stainless steel round rods with chamfered ends to avoid scratching the gaskets in the inner holes of the linkage rectangular rings; the opposite ends of the two sets of linkage rods 209 on the same side are respectively fixedly connected to the corresponding side surfaces of the outer ends of the clip 210; the opposite ends of the two sets of linkage bars 206 extend outwards respectively; a push-pull member is provided on the surface of the support rod 101 and below the two sets of linkage bars 206; the top of both ends of the push-pull member is provided with a connecting member for connecting to the outer ends of the corresponding side linkage bars 206; The rotating connector includes rotating rods 207 fixedly connected to the front and rear sides of opposite ends of two sets of linkage bars 206. The rotating rods 207 are made of Φ8mm stainless steel round rods and are welded to the linkage bars 206 by argon arc welding (weld leg height 3mm) to ensure connection strength. Each of the two sets of rotating rods 207 on the same side has a rotatable adapter ring 213 fitted onto its surface. The adapter ring 213 is made of tin bronze (wear resistance coefficient ≤0.2), and the inner hole has a clearance of 0.1-0.2mm with the rotating rod 207. The inner hole is filled with a solid lubricant (molybdenum disulfide) to ensure flexible rotation without jamming. The two sets of transition rings 213 on one side are fixedly connected to the corresponding side surfaces of the support rod 101. Through the cooperation of the linkage bar 206, the rotating connector, the linkage rectangular ring 208 and the linkage rod 209, power can be stably transmitted to achieve precise movement of the locking bar 210, ensuring that the locking bar 210 can reliably engage or disengage from the locking groove 107, and improving the stability and ease of operation of the positioning post 108. The rotational cooperation between the rotating rod 207 and the transition ring 213 in the rotating connector makes the rotation of the linkage bar 206 more flexible and smooth, ensuring the stability of the overall transmission and reducing jamming during the transmission process.

[0021] The push-pull component includes an external thread 200 on the surface of the support rod 101. The external thread 200 is an M70×3mm trapezoidal thread (30° thread angle) with a thread accuracy grade of 6h. The surface is coated with anti-loosening thread-locking adhesive (temperature resistant -55℃~150℃) to prevent the internal threaded tube 201 from loosening due to railway vibration. The surface of the support rod 101 is threadedly connected to the internal threaded tube 201 via the external thread 200. The internal threaded tube 201 is made of 45# steel (internal wall thread accuracy grade 6H, external wall machined into a hexagonal shape (90mm distance between opposite sides) for easy operation with a wrench). A thrust ball bearing (model...) is installed at the rotatable connection between the internal threaded tube 201 and the connecting ring 202. 51110), reducing relative rotational friction and ensuring effortless operation; the top of the internally threaded tube 201 is rotatably connected to a connecting ring 202. Through the setting of the push-pull component, the external thread 200 is threadedly connected to the internally threaded tube 201. By rotating the internally threaded tube 201, it can move up and down along the support rod 101. The operation is simple and convenient. In addition, the threaded connection has self-locking property, which can ensure the stability of the internally threaded tube 201 after movement, thereby ensuring the reliable fixing effect of the clip 210 on the positioning post 108. At the same time, the connecting ring 202 is rotatably connected to the internally threaded tube 201, which prevents the connecting component from twisting when the internally threaded tube 201 rotates, ensuring the smoothness of power transmission.

[0022] The connecting components include pull rods 203 respectively installed on the top of both sides of the support rod 101. The pull rods 203 are made of Φ8mm stainless steel wire rope (breaking strength ≥50kN) and covered with a PVC protective sleeve (wall thickness 1mm, aging resistance ≥8 years) to prevent rainwater from corroding the wire rope. Both ends of the two sets of pull rods 203 are fixedly connected to adapter rods 204. The adapter rods 204 are made of Φ10mm stainless steel round rods and are fixed to the pull rods 203 through crimp terminals (crimping strength ≥10kN). Positioning rings 205 are rotatably fitted onto both ends of the two sets of adapter rods 204. The positioning rings 205 are made of stainless steel, and the inner hole of the positioning ring has a zero clearance with the adapter rod 204. The 0.1mm diameter ensures flexible rotation. The tops of the four sets of positioning rings 205 located at the top are fixedly connected to the bottom ends of the corresponding side linkage bar 206. The opposite sides of the four sets of positioning rings 205 located at the bottom are fixedly connected to the opposite side surface of the connecting ring 202. Through the cooperation of the pull bar 203, the adapter rod 204, and the adapter ring 213, the movement of the connecting ring 202 can be smoothly transmitted to the linkage bar 206, realizing the reliable swing of the linkage bar 206. Furthermore, the rotational cooperation between the adapter ring 213 and the adapter rod 204 can adapt to the angle change when the linkage bar 206 swings, reducing the stress in the transmission process and improving the durability and transmission stability of the overall structure.

[0023] The connecting ring 202 has a groove 211 at its upper opening. The groove 211 has a V-shaped cross-section (3mm depth, 60° angle) for embedding a sealing ring 212. The sealing ring 212 is embedded in the inner cavity of the groove 211. The sealing ring 212 is made of ethylene propylene diene monomer (EPDM) rubber with a Shore hardness of 70±5 and a compression set of ≤20% (70℃×24h) to ensure long-term sealing performance. The inner ring of the sealing ring 212 is fitted onto the surface of the support rod 101. It slides with the guide groove 106 of the positioning groove 105 and the guide strip 109 of the positioning post 108. This provides precise guidance when the positioning post 108 is inserted into the positioning groove 105, ensuring that the slots 107 on both sides of the positioning post 108 are accurately aligned with the locking strips 210 on the support rod 101. This facilitates the quick engagement of the locking strips 210 with the slots 107, improving installation efficiency and alignment accuracy.

[0024] The positioning groove 105 has a guide groove 106 on its rear inner wall, which is set along the height. The guide groove 106 has a T-shaped cross-section (12mm wide and 8mm deep) and a length consistent with the positioning groove 105. A 0.3mm thick nylon guide strip (friction coefficient ≤0.2) is attached to the groove wall to reduce the sliding resistance of the guide strip 109. The guide strip 109 is slidably inserted into the inner cavity of the guide groove 106. The guide strip 109 has a T-shaped structure (matching the guide groove 106) and is made of wear-resistant nylon material (impact strength ≥10kJ / m). ²), and fixedly connected to the positioning post 108 by screws; one side of the guide strip 109 is fixedly installed on the rear surface of the positioning post 108. Through the guide groove 106 of the positioning groove 105 and the guide strip 109 of the positioning post 108, it can play a precise guiding role when the positioning post 108 is inserted into the positioning groove 105, ensuring that the slots 107 on both sides of the positioning post 108 are accurately aligned with the clips 210 on the support rod 101, which facilitates the quick engagement of the clips 210 with the slots 107, improving installation efficiency and alignment accuracy.

[0025] The bottom of the internally threaded tube 201 is fixedly equipped with a protective tube 300. The protective tube 300 is made of Φ90×3mm PVC-U pipe (weather resistance grade ≥UV50, high temperature resistance ≥60℃), and its length exceeds the bottom of the external thread 200 by more than 50mm. A stainless steel clamp (tightening torque 5N・m) is fitted at the connection between the top of the protective tube 300 and the internally threaded tube 201 to prevent the protective tube from falling off and to completely isolate the external thread 200 from rainwater and dust. Through the setting of the protective tube 300, the protective tube 300 at the bottom of the internally threaded tube 201 can protect the external thread 200 on the surface of the support rod 101, the bottom of the internally threaded tube 201 and related components, preventing them from being directly exposed to the outside world and subjected to external collisions, wear or rainwater erosion, thus extending the service life of the components and improving the protective performance of the overall structure.

[0026] Working principle During the assembly of the positioning post 108 and the support rod 101, the positioning post 108 is inserted into the positioning groove 105 at the top of the support rod 101. At this time, the guide groove 106 on the rear side of the positioning groove 105 and the guide strip 109 on the rear side of the positioning post 108 slide together, which guides the insertion of the positioning post 108 and ensures that the slots 107 on both sides of the positioning post 108 can be accurately aligned with the locking strips 210 in the rectangular holes 104 on both sides of the support rod 101. At the same time, it is necessary to ensure that the protection range of the lightning rod 103 completely covers the target electrified equipment (by the rolling sphere method: when the rolling sphere radius is 30m, a lightning rod height of 10m can protect equipment within a radius of 15m and a height of less than 7m, which meets the layout requirements of the contact network and signal of the railway special line).

[0027] When the internally threaded tube 201 is rotated, it moves up and down along the external thread 200 of the support rod 101. The connecting ring 202, which is rotatably connected to the top of the internally threaded tube 201, moves synchronously with the internally threaded tube 201. The connecting ring 202 drives the outer ends of the linkage bars 206 on both sides to move through the pull bar 203, the adapter rod 204 and the adapter ring 213. The hexagonal structure of the outer wall of the internally threaded tube 201 can be adapted to ordinary wrenches, so that even in the absence of special tools along the railway line, the rotation operation can be completed to meet the needs of emergency maintenance.

[0028] Since the linkage bar 206 is connected to the support rod 101 via the rotating rod 207 and the adapter ring 213, the linkage bar 206 will rotate around the rotating rod 207, causing the end of it near the positioning post 108 to swing inward. The linkage rectangular ring 208 at the opposite end of the linkage bar 206 slides with the linkage rod 209, thereby pushing the linkage rod 209 and the locking strip 210 to slide inward along the rectangular hole 104, and finally causing the end of the locking strip 210 to be locked into the corresponding slot 107 on the positioning post 108, so as to achieve the stable fixation of the positioning post 108 in the positioning groove 105. The locking depth (15mm) between the locking strip 210 and the slot 107 can withstand a radial tensile force of ≥500N, which is sufficient to resist the swaying of the lightning rod caused by strong winds (wind speed ≤30m / s) on the railway.

[0029] When it is necessary to disassemble or adjust the positioning post 108, rotate the internal thread tube 201 in the reverse direction so that it moves in the opposite direction along the external thread 200. The connecting ring 202 drives the outer end of the linkage bar 206 to move in the reverse direction through the connecting piece. The linkage bar 206 swings outward at one end, and pulls the locking strip 210 outward along the rectangular hole 104 through the linkage rectangular ring 208 and the linkage rod 209, so that the end of the locking strip 210 is removed from the locking groove 107, and the positioning post 108 can be taken out from the positioning groove 105. After disassembly, lubricating grease can be added through the oil injection hole of the locking strip 210. At the same time, check the insulation resistance of the surge arrester (it should be ≥1000MΩ) to ensure that the surge protection performance is intact.

[0030] The shielding component at the top of the positioning column 108 can effectively prevent rainwater from entering the positioning groove 105, thus avoiding the positioning groove 105 and its internal components from being corroded by rainwater. The lightning rod 103 at the top of the shielding component can play a role in lightning protection. When lightning strikes, the tip of the lightning rod 103 discharges and attracts lightning. The current is conducted to the ground through the positioning column 108 → bearing seat 100 → grounding flat steel → grounding electrode. At the same time, the surge arrester can clamp the induced overvoltage below 26kV, preventing the overvoltage from entering the traction substation, signal control cabinet and other equipment along the support rod 101.

[0031] In addition, the sealing ring 212 in the groove 211 at the top of the connecting ring 202 is fitted onto the surface of the support rod 101, which enhances the sealing between the connecting ring 202 and the support rod 101; the protective tube 300 at the bottom of the internal threaded tube 201 provides protection for the relevant components; the maintenance cycle of the whole device is set to once every 6 months, with a focus on checking the grounding resistance (≤4Ω), the sliding flexibility of the clamping bar, and the performance of the surge arrester, to ensure that it meets the "high reliability and low maintenance" operation requirements of the railway special line.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightning protection device for electrification equipment on a dedicated railway line, characterized in that, Includes a support base (100), on the top of which a support rod (101) is fixedly installed. A positioning groove (105) is formed on the top of the support rod (101). A positioning post (108) is inserted into the positioning groove (105). A shielding cap (102) for preventing rainwater from entering the positioning groove (105) is fixedly connected to the top of the positioning post (108). A lightning rod (103) is fixedly installed on the top of the shielding cap (102). The support rod ( Rectangular holes (104) are provided on both sides of the top of the support rod (101). The inner cavities of the two sets of rectangular holes (104) are slidably inserted with locking strips (210). On both sides of the positioning post (108) and at the position of the end of the corresponding side locking strip (210), there are locking grooves (107) for the end of the locking strip (210) to be locked. On both sides of the top of the support rod (101), there are pushers that push the corresponding side locking strip (210) inward so that its end is locked in the corresponding side locking groove (107).

2. The lightning protection device for electrification equipment on a dedicated railway line according to claim 1, characterized in that: The pushing component includes linkage bars (206) respectively disposed on both sides of the top of the support rod (101). The opposite ends of the two sets of linkage bars (206) are respectively connected to the corresponding side surface of the support rod (101) through rotating connectors. The front and rear sides of the top of the opposite ends of the two sets of linkage bars (206) are fixedly connected with linkage rectangular rings (208). The inner cavities of the two sets of linkage rectangular rings (208) on the same side are slidably connected with linkage rods (209). The opposite ends of the two sets of linkage rods (209) on the same side are respectively fixedly connected to the corresponding side surface of the outer end of the clip (210). The opposite ends of the two sets of linkage bars (206) extend outward. A push-pull component is disposed on the surface of the support rod (101) and below the two sets of linkage bars (206). The top of both ends of the push-pull component is provided with connectors for connecting to the outer end of the corresponding side linkage bar (206). The rotating connector includes rotating rods (207) fixedly connected to the front and rear sides of the opposite end of the two sets of linkage bars (206). The surfaces of the two sets of rotating rods (207) on the same side are rotatably fitted with transition rings (213). The opposite sides of the two sets of transition rings (213) on the same side are respectively fixedly connected to the corresponding side surfaces of the support rod (101).

3. A lightning protection device for electrification equipment on a dedicated railway line according to claim 2, characterized in that: The push-pull component includes an external thread (200) on the surface of the support rod (101), and an internal thread tube (201) is threadedly connected to the surface of the support rod (101) through the external thread (200). A connecting ring (202) is rotatably connected to the top of the internal thread tube (201).

4. A lightning protection device for electrification equipment on a dedicated railway line according to claim 3, characterized in that: The connecting component includes pull bars (203) respectively disposed on the top of both sides of the support rod (101). Both ends of the two sets of pull bars (203) are fixedly connected to adapter rods (204). Both ends of the two sets of adapter rods (204) are respectively rotatably fitted with positioning rings (205). The tops of the four sets of positioning rings (205) located above are respectively fixedly connected to the bottom ends of the outer side of the corresponding side linkage bar (206). The opposite sides of the four sets of positioning rings (205) located below are respectively fixedly connected to the opposite side surface of the connecting ring (202).

5. A lightning protection device for electrification equipment on a dedicated railway line according to claim 4, characterized in that: The upper opening of the connecting ring (202) is provided with a groove (211), and a sealing ring (212) is embedded in the inner cavity of the groove (211). The inner ring of the sealing ring (212) is fitted onto the surface of the support rod (101).

6. A lightning protection device for electrification equipment on a dedicated railway line according to claim 1, characterized in that: The rear inner wall of the positioning groove (105) is provided with a guide groove (106) set along the height. A guide strip (109) is slidably inserted into the inner cavity of the guide groove (106). One side of the guide strip (109) is fixedly installed on the rear surface of the positioning column (108).

7. A lightning protection device for electrification equipment on a dedicated railway line according to claim 3, characterized in that: A protective tube (300) is fixedly installed at the bottom of the internally threaded tube (201).

Images