An anti-shake type strain cross arm for electricity

Abstract

The present invention discloses an anti-shake type strain cross arm for electricity, which relates to the technical field of cross arms. Both ends of a double-headed screw rod are connected with combined rod assemblies. Inner strengthening tubes are welded to both ends of a middle rod. Drainage holes are arranged at one end of a drainage groove close to the middle rod. A fiberglass outer tube is sleeved outside the inner strengthening tube. A lead screw is rotatably penetrated and installed in the middle of a fixed end block. A glue bladder is movably sleeved in the middle of the lead screw. A positioning and anti-slip assembly is installed on the middle rod. When the cable shakes and pulls the end plate, the connecting screw rod will shake slightly in the displacement hole, and the return spring deforms. Cooperating with the glass glue filled between the inner strengthening tube and the fiberglass outer tube, the vibration of the cable is absorbed. The combination of the middle rod, the inner strengthening tube and the double-headed screw rod forms a frame structure similar to the shape of a "well" character and will not shake, maintaining stability, so as to prevent the overall shake of the cross arm driven by the shake of the cable, reduce the friction loss at the connection between the cross arm and the electric pole, and extend its service life.

Description

Technical Field

[0001] The present invention relates to the technical field of cross arms, and specifically to an anti-shake strain cross arm for electric power. Background Art

[0002] A strain cross arm refers to a cross arm for hanging strain fittings. It bears the weight of relatively heavy conductors. And when the conductors are impacted by external forces, it can also play a buffering role, reduce the vibration of the conductors, and protect the stability of the line. The forms of strain cross arms are diverse, and common ones include different shapes such as circular and rectangular. Due to the use of different materials and processes, the load-bearing capacity and wind resistance performance of strain cross arms are not the same.

[0003] In the patent with the application number 202220933256.8, "A strain cross arm with a bird repelling function" is mentioned. The fastening component of this device is convenient for fixing conductors. It is a strain cross arm with a bird repelling function that has a simple structure, reasonable design, strong practicability, and is stable and reliable. However, when the above-mentioned cross arm, cable, and electrical fittings shake, the force directly acts on the cross arm, the cross arm is subjected to large forces, and the connection between the cross arm and the electric pole is prone to looseness, resulting in increased cable shaking and cross arm damage. Summary of the Invention

[0004] The present invention provides an anti-shake strain cross arm for electric power, which can effectively solve the problems raised in the above background art that when the cross arm, cable, and electrical fittings shake, the force directly acts on the cross arm, the cross arm is subjected to large forces, the connection between the cross arm and the electric pole is prone to looseness, resulting in increased cable shaking and cross arm damage.

[0005] To achieve the above object, the present invention provides the following technical solution. An anti-shake strain cross arm for electric power includes a double-headed screw, and both ends of the double-headed screw are connected with a combined rod assembly. The combined rod assembly includes a middle rod.

[0006] Both ends of the double-headed screw are movably sleeved with the middle rod. Inner strengthening tubes are welded to both ends of the middle rod. Drainage grooves are opened on the outer sides of the inner strengthening tubes. Drainage holes are opened at one end of the drainage grooves close to the middle rod. A fiberglass outer tube is sleeved on the outer side of the inner strengthening tube. A fixed end block is inlaid and fixed at one end of the inner strengthening tube. A lead screw is rotatably penetrated and installed in the middle of the fixed end block. A rotating block is welded to the outer end of the lead screw located outside the inner strengthening tube. A movable end block is threadedly sleeved on the part of the lead screw located inside the inner strengthening tube.

[0007] A glue bladder is movably sleeved in the middle of the lead screw. A support frame is sleeved on the lead screw close to one end of the middle rod. One end of the support frame is welded and connected to the middle rod. A thimble is welded to the support frame close to one end of the glue bladder.

[0008] The top end of the fixed end block is provided with a jack, a positioning plate is embedded and installed inside the jack, a limiting ring is fixedly sleeved at the position where the positioning plate fits the fixed end block, a connecting screw hole is opened at one end of the positioning plate in the inner strengthening pipe, and a displacement hole is opened in the fiberglass outer pipe near the connecting screw hole;

[0009] The two displacement holes at the same end of the two fiberglass outer pipes are respectively lapped on both ends of the end plate, connecting screws are respectively installed through both ends of the end plate corresponding to the connecting screw holes, and a pre-positioning screw is installed on the side of the fiberglass outer pipe near one end of the middle rod.

[0010] According to the above technical solution, an inner sliding pipe is welded to the bottom surface of the end plate near the fiberglass outer pipe, an outer fixed pipe is sleeved outside the inner sliding pipe, one end of the outer fixed pipe is fixedly connected to the fiberglass outer pipe, and a return spring is fixedly installed at one end inside the inner sliding pipe;

[0011] Guiding frames are symmetrically welded to the middle of the end plate, sliders are slidably clamped in the middle of the guiding frames, buffer springs are welded at both ends of the sliders inside the guiding frames, buffer plates are fixedly clamped at both ends of the guiding frames near the ends of the buffer springs, a shaft rod is installed through the middle of the slider and the middle of the end plate, and an insulating roller is rotatably sleeved outside the shaft rod.

[0012] According to the above technical solution, a rubber plug is embedded in the drainage hole, a cross slit is opened in the middle of the rubber plug, a connecting hole is opened in the middle of the glue capsule corresponding to the lead screw, the outside of the glue capsule fits the outside of the inner strengthening pipe, and glass glue is filled inside the glue capsule.

[0013] According to the above technical solution, one end of the positioning plate is trapezoidal, the top surface of the positioning plate is aligned with the top surface of the inner strengthening pipe, and a positioning plate hole is opened in the inner strengthening pipe corresponding to the positioning plate.

[0014] According to the above technical solution, the end face of the slider is I-shaped, the outer sides of adjacent insulating rollers are mutually attached, a wire threading groove is opened in the middle of the insulating roller, and the inner part of the wire threading groove is a smooth curved surface.

[0015] According to the above technical solution, the longitudinal section of the middle rod is L-shaped, triangular plates are welded at both ends of the middle rod, the two ends of the middle rod are the planes of the triangle, and the outer side of the fiberglass outer pipe is flush with the outer side of the middle rod.

[0016] According to the above technical solution, the middle rod is provided with a positioning and anti-slip assembly, and the positioning and anti-slip assembly includes a sliding pipe;

[0017] A sliding tube is symmetrically welded through the middle of the middle rod, and two sliding tubes located on the same middle rod are slidably sleeved on the two ends of the C-shaped frame respectively. The two ends of the C-shaped frame are respectively welded to the two ends of the arc clamp. An extrusion spring is evenly welded on the side of the C-shaped frame close to the middle rod, and both ends of the double-headed screw are sleeved with fixing nuts through threads. The double-headed screw is sleeved with an anti-loosening spring on one side of the fixing nut, and a protective soft cover is sleeved on the outside of the anti-loosening spring. A buffer washer is bonded to one end of the protective soft cover. A guide column is symmetrically welded on the side of the C-shaped frame close to the fixing nut, and a clamping plate is slidably clamped on the middle of the guide column, and a guide hole is opened on the clamping plate corresponding to the guide column;

[0018] The clamping plate is provided with an anti-slip opening at one end of the double-headed screw;

[0019] The double-headed screw is symmetrically clamped with a supporting L-shaped plate at the position between the middle rods, and a supporting port is opened on the supporting L-shaped plate corresponding to the double-headed screw. The bottom ends of the two supporting L-shaped plates located on the same side of the double-headed screw are respectively welded to the two ends of the clamping plate, and the two clamping plates are symmetrically opened with extrusion grooves on opposite faces, and an extrusion slide rod is slidably installed inside the extrusion groove. The extrusion screw is installed at the bottom end of the clamping plate corresponding to the extrusion groove through the strand screw hole, and an extrusion top groove is opened at the bottom end of the arc card corresponding to the top end of the extrusion slide rod. Pre-installed screws are symmetrically welded on the bottom end of the clamping plate, and the two opposite pre-installed screws are respectively connected to the two ends of the internal threaded tube through threads.

[0020] According to the above technical solution, the opposing surfaces of the two clamping plates are rough arc-shaped surfaces, and the arc-shaped surfaces are aligned with the inner side surfaces of the arc-shaped card.

[0021] According to the above technical solution, the top end of the extrusion slide rod is chamfered, the top end of the extrusion top groove is an inclined surface, and the width of the support opening is equal to the diameter of the double-headed screw.

[0022] According to the above technical solution, the longitudinal section of the guide column is T-shaped, and the side surface of the clamping plate fits the end surface of the C-shaped frame.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. A combined pole assembly is provided. The FRP outer tube is sleeved on the end of the inner reinforced tube. The wrench turns the rotating block to rotate. The ejector pin pierces the glue bag. The glass glue flows along the drainage groove and gradually fills the gap between the inner reinforced tube and the FRP outer tube to complete the final fixation. By lifting different components multiple times, fewer components are taken each time and the weight is lighter. Compared with the installation method of carrying the components to the top of the pole after the complete assembly, it is more labor-saving.

[0025] Power fittings and cables are installed at both ends of the end plate. The connecting wires at both ends of the cable or cross arm pass through the insulating rollers in an S shape in turn. When the cable sways and pulls the end plate, the connecting screw will sway slightly in the displacement hole, and the positioning plate will sway slightly in the jack and the positioning plate hole. As a result, the outer fixed tube slides outside the inner sliding tube, the return spring deforms, and together with the glass glue filled between the inner strengthening tube and the fiberglass outer tube, it absorbs the vibration of the cable. The buffer spring will also deform and, used in conjunction with the above structure, further weakens the vibration. The combination of the middle rod, the inner strengthening tube, and the double-headed screw forms a frame structure similar to the shape of a "well" and will not sway, maintaining stability to prevent the overall sway of the cross arm driven by the sway of the cable, reducing the frictional loss at the connection between the cross arm and the utility pole, and extending its service life.

[0026] 2. A positioning and anti-slip assembly is provided. The structure composed of the clamping plate, the pre-installed screw, the internally threaded tube, and the supporting L-shaped plate is sleeved on the top of the utility pole. Rotate the internally threaded tube to reduce the distance between the two clamping plates and clamp the utility pole for fixation. The combination of the middle rod, the inner strengthening tube, and the double-headed screw forms a frame similar to the shape of a "well" and is clamped to the top of the utility pole until the double-headed screw is clamped into the support port and presses the top of the sliding rod for temporary support, so that it is not necessary to continuously hold the fixation by hand when fixing the cross arm, thus reducing the burden during installation.

[0027] Continue to rotate the fixing nut at the end of the double-headed screw. Rely on the anti-loosening spring in the protective soft cover to continuously press the fixing nut to prevent problems such as the cross bar skewing and falling off caused by the subsequent loosening of the fixing nut. Rotate the extrusion screw to push the extrusion sliding rod in the extrusion chute upward. The top of the extrusion sliding rod is embedded in the extrusion top groove, and the inclined surface at the top of the extrusion sliding rod pushes the arc-shaped clamp to press the side of the utility pole, making the installation more firm and not easy to loosen.

[0028] If the cross arm loosens due to corrosion at the contact position between the utility pole and the arc-shaped clamp, under the pushing action of the extrusion spring, the U-shaped frame will be pushed, and the arc-shaped clamp will still continuously press the outside, avoiding the problem of cross arm loosening caused by the increase in the gap at the connection. After the maintenance personnel discover this problem, they can rotate the internally threaded tube, pull the clamping plate to ensure firm fixation, and then rotate the extrusion screw. The extrusion sliding rod pushes the extrusion top groove, and the cross arm can continue to be used without replacing it.

[0029] In summary, the positioning and anti-slip assembly fixes the cross arm on the utility pole and the installation is firm. The combined rod assembly can displace slightly when the cable sways, reducing vibration, while the positioning and anti-slip assembly remains stationary. The two cooperate with each other to ensure the firm fixation of the cross arm while reducing the function of cable sway, making the use effect of the cross arm better. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0031] In the attached drawings:

[0032] Figure 1 is a schematic structural view of the present invention;

[0033] Figure 2 is a schematic structural view of the combined rod assembly of the present invention;

[0034] Figure 3 is the present invention Figure 2 schematic structural view of area A;

[0035] Figure 4 is the present invention Figure 2 schematic structural view of area B;

[0036] Figure 5 is the present invention Figure 2 schematic structural view of area C

[0037] Figure 6 is a schematic installation structure view of the return spring of the present invention;

[0038] Figure 7 is a schematic installation structure view of the movable end block of the present invention;

[0039] Figure 8 is a schematic structural view of the positioning and anti-slip assembly of the present invention;

[0040] Figure 9 is a schematic installation structure view of the arc-shaped clamp of the present invention;

[0041] Figure 10 is a schematic installation structure view of the compression spring of the present invention;

[0042] Figure 11 is a schematic installation structure view of the supporting L-shaped plate of the present invention;

[0043] Reference numerals in the figure: 1. Double-headed screw;

[0044] 2. Combined rod assembly; 201. Middle rod; 202. Inner reinforcement tube; 203. Drainage groove; 204. Drainage hole; 205. Rubber plug; 206. Cross slit; 207. Fiberglass outer tube; 208. Fixed end block; 209. Lead screw; 210. Rotating block; 211. Movable end block; 212. Glue capsule; 213. Support frame; 214. Thimble; 215. Jack hole; 216. Positioning plate; 217. Limit ring; 218. Connecting screw hole; 219. Displacement hole; 220. End plate; 221. Connecting screw; 222. Inner sliding tube; 223. Outer fixed tube; 224. Return spring; 225. Guide frame; 226. Slide block; 227. Buffer spring; 228. Buffer plate; 229. Shaft rod; 230. Insulating roller; 231. Pre-positioning screw; 232. Positioning plate hole

[0045] 3. Positioning and anti-slip assembly; 301. Slide tube; 302. U-shaped frame; 303. Arc-shaped clamp; 304. Extrusion spring; 305. Fixed nut; 306. Anti-loosening spring; 307. Protective soft cover; 308. Buffer washer; 309. Guide post; 310. Clamping plate; 311. Guide hole; 312. Anti-slip opening; 313. Support L-shaped plate; 314. Support opening; 315. Clamping plate; 316. Extrusion chute; 317. Extrusion slide bar; 318. Extrusion screw; 319. Extrusion top groove; 320. Pre-installed screw; 321. Inner threaded tube Detailed implementation mode

[0046] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention

[0047] Embodiment: As Figures 1-11 shown, the present invention provides a technical solution for an anti-shake type strain cross arm for electricity, including a double-headed screw 1. Both ends of the double-headed screw 1 are connected with a combined rod assembly 2. The combined rod assembly 2 includes a middle rod 201, an inner reinforcement tube 202, a drainage groove 203, a drainage hole 204, a rubber plug 205, a cross slit 206, a fiberglass outer tube 207, a fixed end block 208, a lead screw 209, a rotating block 210, a movable end block 211, a glue capsule 212, a support frame 213, a thimble 214, a jack hole 215, a positioning plate 216, a limit ring 217, a connecting screw hole 218, a displacement hole 219, an end plate 220, a connecting screw 221, an inner sliding tube 222, an outer fixed tube 223, a return spring 224, a guide frame 225, a slide block 226, a buffer spring 227, a buffer plate 228, a shaft rod 229, an insulating roller 230, a pre-positioning screw 231 and a positioning plate hole 232

[0048] Both ends of the double-headed screw 1 are movably sleeved with middle rods 201. Both ends of the middle rods 201 are welded with inner strengthening tubes 202. Drainage grooves 203 are opened on the outer sides of the inner strengthening tubes 202. Drainage holes 204 are opened at one end of the drainage grooves 203 close to the middle rods 201. Fiberglass outer tubes 207 are sleeved on the outer sides of the inner strengthening tubes 202. The longitudinal section of the middle rod 201 is L-shaped. Triangular plates are welded at both ends of the middle rod 201. The two ends of the middle rod 201 are the planes of the triangles. The outer side of the fiberglass outer tube 207 is flush with the outer side of the middle rod 201 to improve the strength of the middle rod 201. One end of the inner strengthening tube 202 is inlaid with a fixed end block 208. A lead screw 209 is rotatably installed through the middle of the fixed end block 208. A rotating block 210 is welded at one end of the lead screw 209 on the outer side of the inner strengthening tube 202. A movable end block 211 is sleeved on the lead screw 209 through threads inside the inner strengthening tube 202. A glue bag 212 is movably sleeved in the middle of the lead screw 209. A connection hole is opened at the middle of the glue bag 212 corresponding to the lead screw 209. The outer side of the glue bag 212 is attached to the outer side of the inner strengthening tube 202. Glass glue is filled inside the glue bag 212 to facilitate the extrusion of the glue bag 212 to rupture. A rubber plug 205 is inlaid inside the drainage hole 204. A cross slit 206 is opened in the middle of the rubber plug 205 to prevent sundries from entering the inner strengthening tube 202 before installation. A support frame 213 is sleeved at one end of the lead screw 209 close to the middle rod 201. One end of the support frame 213 is welded to connect the middle rod 201. A thimble 214 is welded at one end of the support frame 213 close to the glue bag 212;

[0049] A jack 215 is opened at the top of the fixed end block 208. A positioning plate 216 is embedded and installed inside the jack 215. One end of the positioning plate 216 is stepped. The top surface of the positioning plate 216 is aligned with the top surface of the inner strengthening tube 202. A positioning plate hole 232 is opened at one end of the inner strengthening tube 202 corresponding to the positioning plate 216 to facilitate the installation of the positioning plate hole 232. A limiting ring 217 is fixedly sleeved at the place where the positioning plate 216 is attached to the fixed end block 208. A connection screw hole 218 is opened at one end of the positioning plate 216 inside the inner strengthening tube 202. A displacement hole 219 is opened at the fiberglass outer tube 207 close to the connection screw hole 218. The two displacement holes 219 at the same end of the two fiberglass outer tubes 207 are respectively lapped on both ends of the end plate 220. Connection screws 221 are respectively installed through both ends of the end plate 220 corresponding to the connection screw holes 218. A pre-positioning screw 231 is installed on the side of the fiberglass outer tube 207 close to one end of the middle rod 201.

[0050] An inner sliding tube 222 is welded on the bottom surface of the end plate 220 close to the fiberglass outer tube 207. An outer fixed tube 223 is sleeved on the outer side of the inner sliding tube 222. One end of the outer fixed tube 223 is fixedly connected to the fiberglass outer tube 207. A return spring 224 is fixedly installed at one end inside the inner sliding tube 222;

[0051] In the middle of the end plate 220, a guiding frame 225 is symmetrically welded. A slider 226 is slidably clamped in the middle of the guiding frame 225. Buffer springs 227 are welded at both ends of the slider 226 inside the guiding frame 225. Buffer plates 228 are fixedly clamped at both ends of the guiding frame 225 near the ends of the buffer springs 227. A shaft rod 229 is installed through the middle of the slider 226 and the middle of the end plate 220. An insulating roller 230 is rotatably sleeved on the outer side of the shaft rod 229. The end face of the slider 226 is in an I shape. The outer sides of adjacent insulating rollers 230 are in mutual contact. A wire threading groove is formed in the middle of the insulating roller 230, and the inner surface of the wire threading groove is a smooth curved surface, which is convenient for installing the cable in the insulating roller 230.

[0052] The middle rod 201 is equipped with a positioning and anti-slip assembly 3. The positioning and anti-slip assembly 3 includes a sliding tube 301, a U-shaped frame 302, an arc-shaped clamp 303, a compression spring 304, a fixing nut 305, an anti-loosening spring 306, a protective soft cover 307, a buffer washer 308, a guide post 309, a clamping plate 310, a guide hole 311, an anti-slip opening 312, a supporting L-shaped plate 313, a supporting opening 314, a clamping plate 315, an extrusion chute 316, an extrusion slide rod 317, an extrusion screw 318, an extrusion top groove 319, a pre-installed screw 320, an internal thread tube 321 and a positioning plate hole 232;

[0053] The middle rod 201 is symmetrically penetrated and welded with sliding tubes 301 in the middle. The two sliding tubes 301 on the same middle rod 201 are respectively slidably sleeved on both ends of the U-shaped frame 302. Both ends of the U-shaped frame 302 are respectively welded and connected to both ends of the arc-shaped clamp 303. A plurality of compression springs 304 are uniformly welded on one side of the U-shaped frame 302 close to the middle rod 201. Both ends of the double-headed screw 1 are threadedly sleeved with fixing nuts 305. An anti-loosening spring 306 is sleeved on one side of the double-headed screw 1 where it is located between the fixing nuts 305. A protective soft cover 307 is sleeved on the outer side of the anti-loosening spring 306. A buffer washer 308 is adhered to one end of the protective soft cover 307. Guide posts 309 are symmetrically welded on one side of the U-shaped frame 302 close to the fixing nut 305. A clamping plate 310 is slidably clamped in the middle of the guide posts 309. The longitudinal section of the guide post 309 is T-shaped. The side face of the clamping plate 310 is in contact with the end face of the U-shaped frame 302, which is convenient for the side face of the clamping plate 310 to slide in contact with the U-shaped frame 302. A guide hole 311 is formed in the clamping plate 310 corresponding to the guide post 309. An anti-slip opening 312 is formed in the clamping plate 310 corresponding to one end of the double-headed screw 1;

[0054] The double-headed screw rod 1 is symmetrically connected with a support L-shaped plate 313 at the position between the middle rod 201. The support L-shaped plate 313 is provided with a support opening 314 corresponding to the double-headed screw rod 1. The bottom ends of the two support L-shaped plates 313 located on the same side of the double-headed screw rod 1 are respectively welded to the two ends of the clamping plate 315. The opposite surfaces of the two clamping plates 315 are rough arc surfaces, and the arc surfaces are aligned with the inner side surfaces of the arc-shaped card 303, so that the clamping plates 315 and the arc-shaped card 303 can clamp and fix the electric pole at the same time. The opposite surfaces of the two clamping plates 315 are symmetrically provided with extrusion grooves 316, and the extrusion grooves 316 are slidably installed inside An extrusion screw 318 is installed at the bottom end of the extrusion slide 317 clamping plate 315 corresponding to the extrusion slide groove 316 through the screw hole, and an extrusion top groove 319 is opened at the bottom end of the arc clamp 303 corresponding to the top position of the extrusion slide 317. The top of the extrusion slide 317 is chamfered, and the top of the extrusion top groove 319 is an inclined surface. The width of the support opening 314 is equal to the diameter of the double-headed screw 1, which is convenient for the top of the extrusion slide 317 to be embedded in the extrusion top groove 319. Pre-installed screws 320 are symmetrically welded at the bottom end of the clamping plate 315, and the two opposite pre-installed screws 320 are respectively connected to the two ends of the internal threaded tube 321 through threads.

[0055] The working principle and use process of the present invention are as follows: assemble part of the cross arm under the electric pole, take the middle pole 201, first put the middle pole 201 on the ends of the parallel double-headed screw 1 respectively, rotate the fixing nut 305, the middle pole 201, the inner strengthening tube 202 and the double-headed screw 1 are combined into a frame similar to the shape of the Chinese character "井", then take the end plate 220, install the connecting screw 221 at both ends, the connecting screw 221 passes through the displacement hole 219, the inner sliding tube 222 is embedded in the outer fixed tube 223, the positioning plate 216 passes through one end of the glass fiber reinforced plastic outer tube 207, the connecting screw hole 218 is aligned with the connecting screw 221 for connection, and the two glass fiber reinforced plastic outer tubes 207 and the end plate 220 are combined into a frame in the shape of the Chinese character "匚";

[0056] The operator arrives at the installation position of the electric pole, rotates the internal threaded tube 321, pushes the pre-installed screw 320, expands the spacing between the clamping plates 315, and sleeves the structure composed of the clamping plate 315, the pre-installed screw 320, the internal threaded tube 321 and the supporting L-shaped plate 313 on the top of the electric pole. After sliding down to the installation height, the operator rotates the internal threaded tube 321 in the opposite direction, pulls the pre-installed screw 320 into the internal threaded tube 321, reduces the spacing between the two clamping plates 315, and clamps the electric pole to fix it;

[0057] The middle pole 201, the inner reinforcement tube 202 and the double-headed screw rod 1 are combined into a frame in the shape of a "well" and connected to the top of the electric pole. The arc surface of the arc-shaped card 303 is aligned with the arc surface of the clamping plate 315, and the top groove 319 is squeezed to align, and then it slides down and approaches the supporting L-shaped plate 313 until the double-headed screw rod 1 is clamped to the top of the squeezing slide rod 317 in the supporting opening 314 for temporary support. Therefore, when fixing the cross arm, there is no need to continue to hold it by hand to reduce the burden during installation. The fixing nut 305 at the end of the double-headed screw rod 1 is continuously turned, and the arc-shaped card 303 continues to squeeze the electric pole, and the squeezing spring 304 is in an extended state at this time, and the water Pull the card plate 310 horizontally, the guide hole 311 slides along the guide column 309, the anti-slip opening 312 is clamped on the double-headed screw 1 on one side of the buffer washer 308, and the anti-loosening spring 306 in the protective soft cover 307 is used to continuously squeeze the fixing nut 305 to prevent the subsequent loosening of the fixing nut 305 and the like, which will cause the cross bar to tilt and fall off. The extrusion screw 318 is rotated to push the extrusion slide bar 317 in the extrusion slide groove 316 to move upward, and the top end of the extrusion slide bar 317 is embedded in the extrusion top groove 319. The inclined surface of the top end of the extrusion slide bar 317 pushes the arc card 303 to squeeze the side of the electric pole, making the installation more firm and not easy to loosen;

[0058] Then hoist two FRP outer tubes 207 and end plates 220 to form a "匚"-shaped frame. The FRP outer tube 207 is sleeved on the end of the inner strengthening tube 202 and slides until the positioning plate 216 is embedded in the positioning plate hole 232 and the plug hole 215. At this time, one end of the FRP outer tube 207 will also fit the end of the middle rod 201, and the limit ring 217 fits the fixed end block 208. Turn the pre-installed screw 320 to temporarily fix the inner strengthening tube 202 and the FRP outer tube 207 to prevent dislocation during subsequent fixation. The rotating block 210 is rotated by hand, and the screw rod 209 pushes the movable end block 211 to squeeze the glue bag 212 close to the ejector pin 214 of the support frame 213. The ejector pin 214 will pierce the glue bag 212, and the glass glue in the glue bag 212 will flow out. The movable end block 211 is still squeezing, and the glass glue breaks through the cross slit 206 of the rubber plug 205 in the drainage hole 204. The glass glue flows along the drainage groove 203 and gradually fills the gap between the inner strengthening tube 202 and the glass fiber reinforced plastic outer tube 207, completing the final fixation;

[0059] By hoisting different components multiple times, with fewer and lighter components taken each time, it is more labor-saving compared to the installation method of transporting the fully assembled components to the top of the utility pole. Power fittings and cables are installed at both ends of the end plate 220. The connecting wires at both ends of the cable or cross arm pass through the insulating rollers 230 in an S shape in sequence. The buffer spring 227 will push the slider 226 to slide along the guiding frame 225 and tighten the cable or connecting wire. When the cable sways and pulls the end plate 220, the connecting screw 221 will sway slightly in the displacement hole 219, and the positioning plate 216 will sway slightly in the jack 215 and the positioning plate hole 232. As a result, the outer fixed tube 223 slides outside the inner sliding tube 222, and the return spring 224 deforms. Together with the glass glue filled between the inner reinforcement tube 202 and the fiberglass outer tube 207, the vibration of the cable is absorbed. The buffer spring 227 will also deform. Used in conjunction with the above structure, the vibration is further reduced. The middle rod 201, the inner reinforcement tube 202, and the double-headed screw 1 form a frame structure similar to a "well" shape and will not sway, maintaining stability to prevent the overall sway of the cross arm driven by the sway of the cable, reducing the frictional loss at the connection between the cross arm and the utility pole, and extending its service life;

[0060] And after long-term use, if the contact position between the utility pole and the arc-shaped clamp 303 corrodes and causes the cross arm to loosen, under the pushing action of the extrusion spring 304, due to the unchanged distance between the middle rods 201, the U-shaped frame 302 will be pushed, and the arc-shaped clamp 303 will still continuously extrude the outside, ensuring that the connection remains tightly fitted and avoiding the problem of the cross arm loosening caused by the increase in the gap at the connection. After the maintenance personnel discover this problem, the inner threaded tube 321 can be rotated to pull the clamping plate 315 to ensure firm fixation, and then the extrusion screw 318 is rotated to push the extrusion slide bar 317 to push the extrusion top groove 319. Without replacing the cross arm, the cross arm can continue to be used.

[0061] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A anti-shake type strain crossarm for electricity, comprising a double-headed screw rod (1), characterized in that: Both ends of the double-headed screw rod (1) are connected with combined rod assemblies (2), and the combined rod assembly (2) includes a middle rod (201). Both ends of the double-headed screw rod (1) are movably sleeved with a middle rod (201). Inner strengthening pipes (202) are welded to both ends of the middle rod (201). Drainage grooves (203) are formed on the outer sides of the inner strengthening pipes (202). Drainage holes (204) are formed at one ends of the drainage grooves (203) close to the middle rod (201). Fiberglass outer pipes (207) are sleeved on the outer sides of the inner strengthening pipes (202). Fixed end blocks (208) are embedded at one ends of the inner strengthening pipes (202). A lead screw (209) is rotatably installed through the middle of the fixed end block (208). A rotating block (210) is welded to one end of the lead screw (209) located outside the inner strengthening pipe (202). A movable end block (211) is threadedly sleeved on the lead screw (209) inside the inner strengthening pipe (202). A glue capsule (212) is movably sleeved in the middle of the lead screw (209). A support frame (213) is sleeved on one end of the lead screw (209) close to the middle rod (201). One end of the support frame (213) is welded to the middle rod (201). A thimble (214) is welded to one end of the support frame (213) close to the glue capsule (212). A jack (215) is formed at the top of the fixed end block (208). A positioning plate (216) is embedded in the jack (215). A limiting ring (217) is fixedly sleeved on the positioning plate (216) where it fits against the fixed end block (208). A connecting screw hole (218) is formed at one end of the positioning plate (216) located inside the inner strengthening pipe (202). A displacement hole (219) is formed in the fiberglass outer pipe (207) close to the connecting screw hole (218). The two displacement holes (219) at the same ends of the two fiberglass outer pipes (207) are respectively lapped on both ends of an end plate (220). Connecting screw rods (221) are respectively installed through both ends of the end plate (220) corresponding to the connecting screw holes (218). Pre-positioning screws (231) are installed on the side faces of the fiberglass outer pipes (207) close to the middle rod (201).

2. The anti-sway strain cross-arm for electricity according to claim 1, wherein, An inner sliding pipe (222) is welded to the bottom surface of the end plate (220) close to the fiberglass outer pipe (207). An outer fixed pipe (223) is sleeved on the outer side of the inner sliding pipe (222). One end of the outer fixed pipe (223) is fixedly connected to the fiberglass outer pipe (207). A return spring (224) is fixedly installed at one end inside the inner sliding pipe (222). A guiding frame (225) is symmetrically welded to the middle of the end plate (220). A slider (226) is slidably clamped in the middle of the guiding frame (225). Buffer springs (227) are welded to both ends of the slider (226) inside the guiding frame (225). Buffer plates (228) are fixedly clamped at both ends of the guiding frame (225) near the ends of the buffer springs (227). A shaft rod (229) is installed through the middle of the slider (226) and the middle of the end plate (220). An insulating roller (230) is rotatably sleeved outside the shaft rod (229).

3. The anti-sway type strain cross arm for electricity according to claim 1, characterized in that, A rubber plug (205) is embedded in the drainage hole (204). A cross slit (206) is opened in the middle of the rubber plug (205). A connection hole is opened in the middle of the glue bladder (212) corresponding to the lead screw (209). The outside of the glue bladder (212) is attached to the outside of the inner strengthening tube (202). The glue bladder (212) is filled with glass glue.

4. The anti-sway strain crossarm for electricity according to claim 1, characterized in that, One end of the positioning plate (216) is stepped. The top surface of the positioning plate (216) is aligned with the top surface of the inner strengthening tube (202). A positioning plate hole (232) is opened at one end of the inner strengthening tube (202) corresponding to the positioning plate (216).

5. The anti-sway strain crossarm for electricity according to claim 2, characterized in that, The end face of the slider (226) is I-shaped. The outsides of adjacent insulating rollers (230) are attached to each other. A wire threading groove is opened in the middle of the insulating roller (230). The inside of the wire threading groove is a smooth curved surface.

6. The anti-sway strain cross arm for electricity according to claim 1, characterized in that, The longitudinal section of the middle rod (201) is L-shaped. Triangular plates are welded to both ends of the middle rod (201). The two ends of the middle rod (201) are the planes of triangles. The outside of the fiberglass outer tube (207) is flush with the outer side of the middle rod (201).

7. The anti-shake strain cross arm for electricity according to claim 1, characterized in that, The middle rod (201) is equipped with a positioning and anti-slip assembly (3), and the positioning and anti-slip assembly (3) includes a sliding tube (301); Sliding tubes (301) are symmetrically penetrated and welded to the middle of the middle rod (201). The two sliding tubes (301) on the same middle rod (201) are respectively slidably sleeved on both ends of a U-shaped frame (302). Both ends of the U-shaped frame (302) are respectively welded to both ends of an arc-shaped clamp (303). A plurality of extrusion springs (304) are evenly welded on one side of the U-shaped frame (302) close to the middle rod (201). Both ends of the double-headed screw (1) are threadedly sleeved with fixing nuts (305). A anti-loosening spring (306) is sleeved on one side of the double-headed screw (1) where the fixing nut (305) is located. A protective soft cover (307) is sleeved outside the anti-loosening spring (306). A buffer washer (308) is bonded to one end of the protective soft cover (307). Guide posts (309) are symmetrically welded on one side of the U-shaped frame (302) close to the fixing nut (305). A clamping plate (310) is slidably clamped in the middle of the guide posts (309). A guiding hole (311) is opened in the clamping plate (310) corresponding to the guide posts (309); The clamping plate (310) is provided with an anti-slip opening (312) corresponding to one end of the double-headed screw (1); The double-headed screw (1) is symmetrically clamped with support L-shaped plates (313) at the position between the middle rods (201). The support L-shaped plates (313) are provided with support openings (314) corresponding to the double-headed screw (1). The bottoms of the two support L-shaped plates (313) on the same side of the double-headed screw (1) are respectively welded to both ends of the clamping plate (315). The opposite faces of the two clamping plates (315) are symmetrically provided with extrusion chutes (316). An extrusion slide bar (317) is slidably installed inside the extrusion chute (316). The bottom end of the clamping plate (315) is provided with an extrusion screw (318) through a femoral screw hole corresponding to the extrusion chute (316). An extrusion top groove (319) is provided at the bottom end of the arc-shaped clamp (303) corresponding to the top end of the extrusion slide bar (317). The bottom end of the clamping plate (315) is symmetrically welded with pre-installed screws (320). The two opposite pre-installed screws (320) are respectively threadedly connected to both ends of the internal thread tube (321).

8. A anti - sway type strain cross - arm for electricity according to claim 7, characterized in that, The opposite faces of the two clamping plates (315) are rough arc-shaped surfaces, and the arc-shaped surfaces are aligned with the inner side faces of the arc-shaped clamps (303).

9. The anti-sway type strain crossarm for electricity according to claim 7, characterized in that, The top end of the extrusion slide bar (317) is chamfered. The top end of the extrusion top groove (319) is a slope. The width of the support opening (314) is equal to the diameter of the double-headed screw (1).

10. A sway-proof strain crossarm for electricity according to claim 7, characterized in that, The longitudinal section of the guide post (309) is T-shaped. The side face of the clamping plate (310) is attached to the end face of the U-shaped frame (302).

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