A cable protection fitting for electric power engineering

Abstract

The application discloses a cable protection hardware for electric power engineering and belongs to the field of protection hardware, which comprises a support, a stranded wire provided on the support, and a weight provided at the end of the stranded wire; further comprising a semicircular pressing plate and a U-shaped bolt, the pressing plate is detachably connected with the support, the U-shaped bolt is used for fixing the pressing plate on the support, a semicircular wire groove is provided on the support, the wire groove is used for placing a cable, and the pressing plate is fixed on the support through the U-shaped bolt after the cable is placed in the wire groove; the scheme is provided with an arc-shaped cavity, a gas supply assembly and a communication groove; the gas supply assembly can supply gas to the communication groove during the vibration of the weight, so that the side wall of the arc-shaped cavity is expanded, the buffer pad is more closely attached to the cable, the particulate matters in the air are prevented from entering the gap between the cable and the buffer pad, the fixing effect of the support and the cable is improved, the buffer pad and the cable are protected, and the cable and the buffer pad are prevented from being damaged due to friction.

Description

Technical Field

[0001] This invention relates to the field of protective fittings, and more specifically, to a cable protective fitting for power engineering. Background Technology

[0002] According to their function and structure, electrical fittings can be classified into categories such as protective fittings, tension clamps, suspension clamps, and connecting fittings. Among them, protective fittings include vibration dampers, which are installed to reduce the vibration of conductors caused by wind.

[0003] High-voltage overhead lines are located at high poles and have large spans. When the conductors are subjected to wind force, they will vibrate. When the conductors vibrate, they will suffer fatigue damage due to periodic bending.

[0004] Chinese patent application CN116598985B discloses a cable protection fitting for power engineering. By moving the extrusion ring, the inclined surface of the rubber block is squeezed, causing the rubber block to move towards the cable inside the installation block after being squeezed, thus restricting the cable again.

[0005] The aforementioned patent still has the following shortcomings: In northern regions, winter winds are typically strong, and this is a major external factor causing cable vibration. The wind force acts on the cable, generating a periodic excitation force that causes vibration. When wind speeds are high, this excitation force is even greater, leading to an increase in the frequency and amplitude of cable vibration. When the vibration damper is installed close to the ground, road, or construction site, strong winds or passing vehicles will stir up dust and disperse it into the air. While the aforementioned patent effectively fixes the cable to the housing using a rubber block placed between the casing and the cable, it also has limitations. Because rubber has inherent elastic properties, when external factors cause the cable to vibrate, this elasticity will also cause the rubber block to move or vibrate accordingly. For this reason, a temporary gap will appear between the cable and the rubber block. At this time, small particles such as sand blown by the wind in the surrounding environment can take the opportunity to enter the gap between the rubber block and the cable. Especially in winter, the elasticity of the rubber block is poor and its texture is harder. Therefore, once foreign objects such as sand are embedded in the rubber surface or internal structure, it will accelerate the wear process of the rubber material, thereby shortening its service life and potentially affecting the stability and safety of the entire device.

[0006] Therefore, a cable protection fitting for power engineering is proposed. Summary of the Invention

[0007] In view of the problems existing in the prior art, the purpose of this invention is to provide a cable protection hardware for power engineering, which can reduce the wear of the buffer pad, improve the fixing effect of the cable and the bracket, and thus improve the safety and stability of the entire device.

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A cable protection fitting for power engineering includes a bracket, a stranded wire on the bracket, and a counterweight at the end of the stranded wire.

[0010] It also includes a semi-circular pressure plate and U-bolts. The pressure plate is detachably connected to the bracket. The U-bolts are used to fix the pressure plate to the bracket. The bracket has a semi-circular wire groove for placing cables. After the cables are placed in the wire groove, the pressure plate is fixed to the bracket by the U-bolts, thus fixing the bracket and the cables together.

[0011] Both the pressure plate and the side wall of the cable tray are equipped with elastic buffer pads. By setting buffer pads that can deform, the fixing effect on the cables can be improved.

[0012] The buffer pad has an arc-shaped cavity, and the side wall of the buffer pad has an arc-shaped connecting groove that communicates with the arc-shaped cavity. The connecting groove connects the arc-shaped cavities on two buffer pads. Therefore, when gas is injected into one of the connecting grooves, the airflow can flow into each arc-shaped cavity connected to the connecting groove. The counterweight is equipped with an air supply component that cooperates with the connecting groove. When the air supply component supplies gas to the connecting groove, the air pressure in the arc-shaped cavity connected to the connecting groove increases. At this time, the side wall of the arc-shaped cavity expands, and the buffer pad and the cable make closer contact, thereby improving the fixing effect of the cable and the bracket, improving the stability and safety of the device, preventing the cable and the buffer pad from rubbing against each other, and playing a role in protecting the cable and the buffer pad. At the same time, it can prevent impurities from entering the gap between the buffer pad and the cable during cable vibration, playing a role in preventing wear on the outer wall of the buffer pad or the cable, and improving the protection effect of the buffer pad and the cable.

[0013] An arc-shaped groove is formed on the inner wall of the buffer pad, and a pressure relief valve connected to the arc-shaped groove is embedded in the side wall of the arc-shaped cavity. Therefore, when the air pressure in the arc-shaped cavity continues to rise due to cable vibration, the arc-shaped cavity releases pressure through the pressure relief valve. At this time, the arc-shaped groove is filled with gas. A semi-circular groove is formed on the side wall of the arc-shaped groove away from the arc-shaped cavity. The distance between the semi-circular groove and the side wall of the cable is 1-2 mm. Therefore, the gas in the arc-shaped groove will be discharged through the gap between the semi-circular groove and the outer wall of the cable, thereby preventing sand particles from entering the gap between the buffer pad and the cable. Thus, during cable vibration, it can prevent the cable and the buffer pad from wearing, further improving the protection effect of the cable and the buffer pad. In addition, the buffer pad is equipped with a stirring component that cooperates with the arc-shaped groove. Therefore, under the action of the stirring component, the semi-circular groove can be vented evenly, ensuring that sand particles are impacted by airflow when they are on the surface of the buffer pad and the cable, which plays a role in preventing sand particles from getting stuck between the cable and the side wall of the semi-circular groove.

[0014] Furthermore, the gas supply component includes a sleeve made of insulating material embedded in the counterweight. An elastic membrane is horizontally fixed inside the sleeve, and a counterweight is embedded in the elastic membrane. Therefore, during the swing of the counterweight, the counterweight will pull the elastic membrane to deform. An air inlet valve and an air outlet valve are embedded on the side wall of the sleeve. Therefore, when the counterweight moves towards the conduit, the gas in the space between the elastic membrane and the conduit inside the sleeve will be discharged through the air outlet valve. When the counterweight moves away from the conduit, the space between the elastic membrane and the conduit inside the sleeve will draw in air from the outside through the air inlet valve, which ensures that the sleeve can continuously discharge gas through the air outlet valve. A conduit extending into the connecting groove is installed on the output end of the air outlet valve. The gas discharged from the air outlet valve enters the conduit and finally flows into the connecting groove, which serves to supply gas to the connecting groove.

[0015] Furthermore, the mixing component includes a first air hole formed on the side wall of the arc-shaped groove. The first air hole is funnel-shaped, and the output end of the pressure relief valve is connected to the first air hole. Therefore, the gas discharged by the pressure relief valve will be discharged through the first air hole. The diameter of the first air hole near the arc-shaped groove is larger than the diameter near the arc-shaped cavity. An elastic rope is fixedly installed inside the first air hole, and a turbulence block is fixedly installed on the elastic rope. The gas discharged by the pressure relief valve will impact the turbulence block. Under the action of the elastic rope, the turbulence block will disengage from the first air hole and shake. At this time, the side wall of the turbulence block in the shaking state can change the flow direction of the gas discharged from the first air hole, so that the gas discharged from the first air hole can quickly fill the entire arc-shaped groove, thereby making the semi-circular groove exhaust gas evenly.

[0016] Furthermore, a mounting rod is horizontally rotatably mounted on the side wall of the baffle block, and baffle plates are uniformly and obliquely fixedly mounted on the mounting rod. During the process of airflow impacting the baffle block, some airflow comes into contact with the baffle plates. At this time, under the action of airflow impact force, the baffle plates drive the mounting rod to rotate, further expanding the diffusion range of the gas discharged from the first air hole, and further improving the rate at which the gas is uniformly distributed in the arc-shaped groove.

[0017] Furthermore, the sidewall of the arc-shaped groove away from the first air hole is uniformly provided with arc-shaped protrusions. Therefore, during the rotation of the baffle, it will intermittently impact the protrusions. At this time, the protrusions will transfer the impact force to the buffer pad, thereby bouncing the sand particles on the surface of the buffer pad away, reducing the probability of sand particles falling onto the cable surface, and thus preventing sand particles from the cable surface from entering the connection between the cable and the buffer pad. At the same time, the buffer pad is prone to cracks when exposed to the outside for a long time. Therefore, bouncing the particles away can prevent the particles from entering the cracks, thus improving the protection effect of the buffer pad. The protrusions are made of elastic material. Therefore, when the baffle impacts the protrusion, the baffle will be bounced away under the action of the reaction force, thereby causing the baffle to shake irregularly, further improving the turbulence effect.

[0018] Furthermore, since the stranded wire is made of multiple metal wires twisted together, there are small gaps between the metal wires, and the metal wires of the stranded wire will rub against each other during the vibration of the weight.

[0019] The stranded wire and the conduit are both covered with a protective sleeve made of elastic material. The two ends of the protective sleeve are fixedly connected to the side wall of the counterweight and the side wall of the support, respectively. Therefore, in windy weather, it can prevent airborne particles from contacting the stranded wire, thus protecting it. The protective sleeve is made of heat-insulating material. Therefore, the heat generated by the friction between the metal wires that make up the stranded wire during the vibration of the counterweight will be transferred to the conduit, thereby raising the temperature of the gas inside the conduit. Thus, by bringing the hotter gas into contact with the elastic material buffer pad, the buffer pad can be heated, thereby preventing the elastic material buffer pad from hardening and becoming brittle. This ensures that the buffer pad can maintain its flexibility and elasticity, that is, it ensures that the buffer pad can expand.

[0020] Furthermore, during the installation of the entire device, the stranded wires are parallel to the cable, so when the cable is energized, an induced magnetic field is generated around the cable.

[0021] A groove is formed on the inner bottom wall of the sleeve, and a gantry frame is slidably installed in the groove. A drive mechanism that cooperates with the gantry frame is provided inside the sleeve. During the swing of the weight, the drive mechanism drives the gantry frame to move along the groove. At this time, the gantry frame also has displacement in the horizontal direction. A metal rod and a resistance wire are provided on the horizontal section of the gantry frame. The metal rod and the resistance wire are connected in series. Therefore, as the gantry frame moves along the groove, it will move in the horizontal direction. At this time, the metal rod cuts the magnetic field lines. The induced magnetic field generated around the energized cable is existing technology and will not be described in detail. Therefore, the resistance wire connected in series with the metal rod will heat up, thereby improving the heating effect on the gas discharged from the sleeve. In winter, it ensures the elasticity of the buffer pad and plays a role in ensuring that the buffer pad can deform.

[0022] Furthermore, the drive mechanism includes a diagonal bar fixedly installed on the bottom wall of the counterweight. The diagonal bar cooperates with the horizontal section of the gantry. During the up-and-down swing of the counterweight, the counterweight will intermittently approach the inner bottom wall of the sleeve due to inertia. When the counterweight approaches the inner bottom wall of the sleeve, the diagonal bar applies a horizontal thrust to the gantry under the action of the diagonal bar, so the gantry will move in the horizontal direction. An elastic bellows is provided between the gantry and the side wall of the slide. At this time, the elastic bellows deforms. When the counterweight moves away from the inner bottom wall of the sleeve, the pressure applied by the diagonal bar to the gantry decreases. At this time, the elastic bellows pulls the gantry back to its original position.

[0023] Furthermore, a second vent is provided on the elastic bellows. Therefore, during the stretching process, the elastic bellows draws in air through the second vent. When the elastic bellows returns to its original state, the gas inside is discharged through the second vent. The second vent cooperates with the resistance wire, so the gas discharged from the second vent will impact the air around the resistance wire, increasing the probability of contact between the gas inside the sleeve and the resistance wire, improving the heat exchange effect, thereby improving the utilization rate of the heat generated by the resistance wire, ensuring that the heat generated by the resistance wire can be transferred to the buffer pad in a timely manner, thus improving the heating effect on the buffer pad.

[0024] Furthermore, the cushioning pad is made of rubber material. Because rubber material has good weather resistance, it can maintain stable performance in harsh environments such as sunlight and rain. At the same time, rubber also has a certain degree of corrosion resistance, which can resist the erosion of chemicals such as acids and alkalis. It is suitable for various complex outdoor environments. Therefore, the cushioning pad made of rubber material plays a role in improving the stability of the device.

[0025] Furthermore, the counterweight has mounting holes, and the sleeve sidewall has openings communicating with the mounting holes. Shape memory alloy wires are installed on the sidewalls of the mounting holes. Since the counterweight is made of metal, it has good thermal conductivity. Therefore, when the ambient temperature is high, the shape memory alloy wires are in an extended state; when the ambient temperature is low, they are in a contracted state. A heat-conducting rod communicating with the outside is embedded in the bottom wall of the sleeve. An insulation plate that cooperates with the heat-conducting rod is slidably installed on the inner wall of the sleeve. The insulation plate is connected to the shape memory alloy wires. Therefore, in summer when the temperature is high, the extended shape memory alloy wires move the insulation plate away from the surface of the heat-conducting rod, thus making the internal temperature of the sleeve the same as the external temperature. This prevents the buffer pad from overheating and softening during the sleeve's venting process, improving the fixation effect on the bracket and cables. In winter, the contracted shape memory alloy wires move the insulation plate to the surface of the heat-conducting rod, preventing heat dissipation from the sleeve and improving the utilization rate of the resistance wire's heat, ensuring that the buffer pad has sufficient elasticity.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) It can supply air to the connecting groove through the air supply component during the vibration of the heavy hammer, thereby expanding the side wall of the arc cavity, making the buffer pad and the cable fit more tightly, preventing airborne particles from entering the gap between the cable and the buffer pad, thus improving the fixing effect of the bracket and the cable while protecting the buffer pad and the cable, and playing the role of preventing the cable and the buffer pad from being damaged by friction.

[0028] (2) It can discharge excess gas in the arc cavity into the arc groove through the pressure relief valve, and then discharge it through the semi-circular groove, thereby applying impact force to the particles on the surface of the cable, preventing particles from entering the gap between the buffer pad and the cable, and further improving the protection effect on the cable and the buffer pad.

[0029] (3) It can generate heat during the up-and-down shaking of the weight, thereby heating the cushioning pad. In winter, it ensures the elasticity of the cushioning pad and plays a role in ensuring that the cushioning pad can deform.

[0030] (4) This application enhances the sealing effect, protects the buffer pad, reduces the maintenance frequency and reduces maintenance costs throughout the entire operation process. In this application, heating is used to protect the buffer pad, thereby reducing the frequency of replacing the buffer pad. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the connection between the bracket and the cable of the present invention;

[0032] Figure 2 This is a structural schematic diagram of a cross-sectional view of the protective sleeve of the present invention;

[0033] Figure 3 This is a schematic diagram of the combined structure of the buffer pad and the support of the present invention;

[0034] Figure 4 This is a cross-sectional view of the buffer pad of the present invention;

[0035] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A;

[0036] Figure 6 This is a cross-sectional view of the sleeve of the present invention;

[0037] Figure 7 This is a schematic diagram of the combined structure of the mounting rod and the spoiler of the present invention.

[0038] Explanation of the labels in the diagram:

[0039] 1. Bracket; 2. Stranded wire; 3. Counterweight; 4. Pressure plate; 5. U-bolt; 6. Buffer pad; 7. Arc-shaped cavity; 8. Connecting groove; 9. Arc-shaped groove; 10. Pressure relief valve; 11. Semi-circular groove; 12. Sleeve; 13. Elastic membrane; 14. Counterweight; 15. Inlet valve; 16. Exhaust valve; 17. Conduit; 18. First air hole; 19. Elastic rope; 20. Baffle block; 21. Mounting rod; 22. Baffle plate; 23. Protrusion; 24. Protective sleeve; 25. Slide groove; 26. Gantry frame; 27. Metal rod; 28. Resistance wire; 29. ​​Diagonal rod; 30. Elastic corrugated pipe; 31. Second air hole; 32. Shape memory alloy wire; 33. Heat conducting rod; 34. Insulation board. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] Example 1:

[0042] Please see Figures 1 to 7 A cable protection fitting for power engineering includes a bracket 1, on which stranded wires 2 are provided, and two stranded wires 2 are symmetrically provided on the bracket 1, and each stranded wire 2 has a counterweight 3 at its end.

[0043] M = 0.4 * d 2 -2.2;

[0044] 5≤M≤20;

[0045] Where M is the mass of the hammer 3, and the unit of M is kilograms;

[0046] d is the outer diameter of the cable, which is a preset value. The unit of d is millimeters.

[0047] It also includes a semi-circular pressure plate 4 and a U-bolt 5. The pressure plate 4 is detachably connected to the bracket 1. The U-bolt 5 is used to fix the pressure plate 4 to the bracket 1. The bracket 1 is provided with a semi-circular wire groove for placing cables. After the cable is placed in the wire groove, the pressure plate 4 is fixed to the bracket 1 by the U-bolt 5, so that the bracket 1 and the cable can be fixed together.

[0048] Both the pressure plate 4 and the side wall of the cable tray are equipped with elastic buffer pads 6. By setting the buffer pads 6 that can deform, the fixing effect of the cable can be improved.

[0049] An arc-shaped cavity 7 is formed on the buffer pad 6, and an arc-shaped connecting groove 8 is formed on the side wall of the buffer pad 6, which communicates with the arc-shaped cavity 7. The connecting groove 8 is used to connect the arc-shaped cavities 7 on two buffer pads 6. Therefore, when gas is injected into one of the connecting grooves 8, the airflow can flow into each arc-shaped cavity 7 connected to the connecting groove 8. The counterweight 3 is provided with an air supply component that cooperates with the connecting groove 8. When the air supply component supplies air to the connecting groove 8, the air pressure in the arc-shaped cavity 7 connected to the connecting groove 8 increases. At this time, the side wall of the arc-shaped cavity 7 expands, and the buffer pad 6 is in closer contact with the cable, thereby improving the fixing effect on the cable and the bracket 1, improving the stability and safety of the device, preventing the cable and the buffer pad 6 from rubbing against each other, and playing a role in protecting the cable and the buffer pad 6. At the same time, it can prevent impurities from entering the gap between the buffer pad 6 and the cable during cable vibration, playing a role in preventing wear on the outer wall of the buffer pad 6 or the cable, and improving the protection effect on the buffer pad 6 and the cable.

[0050] An arc-shaped groove 9 is formed on the inner wall of the buffer pad 6, and a pressure relief valve 10 communicating with the arc-shaped groove 9 is embedded in the side wall of the arc-shaped cavity 7. Therefore, when the cable vibration causes the air pressure in the arc-shaped cavity 7 to rise continuously, the arc-shaped cavity 7 releases pressure through the pressure relief valve 10. At this time, the arc-shaped groove 9 is filled with gas. A semi-circular groove 11 is formed on the side wall of the arc-shaped groove 9 away from the arc-shaped cavity 7. The distance between the semi-circular groove 11 and the side wall of the cable is 1-2 mm. Therefore, the gas in the arc-shaped groove 9 will be discharged through the gap between the semi-circular groove 11 and the outer wall of the cable. The air is expelled, thus preventing sand particles from entering the gap between the buffer pad 6 and the cable. Therefore, during cable vibration, it can prevent the cable and the buffer pad 6 from wearing out, further improving the protection effect on the cable and the buffer pad 6. In addition, the buffer pad 6 is equipped with a stirring component that cooperates with the arc groove 9. Therefore, under the action of the stirring component, the semi-circular groove 11 can evenly expel air, ensuring that the sand particles are subjected to the airflow impact force when they are on the surface of the buffer pad 6 and the cable, which plays a role in preventing sand particles from getting stuck between the cable and the side wall of the semi-circular groove 11.

[0051] like Figure 6As shown, the gas supply assembly includes a sleeve 12 made of insulating material embedded in the weight 3. An elastic diaphragm 13 is horizontally fixed inside the sleeve 12, and a counterweight 14 is embedded on the elastic diaphragm 13. Therefore, during the swinging of the weight 3, the counterweight 14 will pull the elastic diaphragm 13 to deform. An inlet valve 15 and an exhaust valve 16 are embedded on the side wall of the sleeve 12. Therefore, when the counterweight 14 moves towards the conduit 17, the gas in the space between the elastic diaphragm 13 and the conduit 17 inside the sleeve 12 will be released. The gas is discharged through the exhaust valve 16. When the counterweight 14 moves away from the conduit 17, the space between the elastic membrane 13 and the conduit 17 in the sleeve 12 draws air from the outside through the air inlet valve 15, which ensures that the sleeve 12 can continuously exhaust gas through the exhaust valve 16. The output end of the exhaust valve 16 is equipped with a conduit 17 that extends into the connecting groove 8. The gas discharged from the exhaust valve 16 enters the conduit 17 and finally flows into the connecting groove 8, which serves to supply gas to the connecting groove 8.

[0052] like Figure 5 As shown, the mixing component includes a first air hole 18 formed on the side wall of the arc-shaped groove 9. The first air hole 18 is funnel-shaped, and the output end of the pressure relief valve 10 is connected to the first air hole 18. Therefore, the gas discharged by the pressure relief valve 10 will be discharged through the first air hole 18. The diameter of the first air hole 18 near the arc-shaped groove 9 is larger than the diameter near the arc-shaped cavity 7. An elastic rope 19 is fixedly installed inside the first air hole 18, and a baffle block 20 is fixedly installed on the elastic rope 19. The gas discharged by the pressure relief valve 10 will impact the baffle block 20. Under the action of the elastic rope 19, the baffle block 20 will disengage from the first air hole 18 and shake. At this time, the side wall of the shaking baffle block 20 can change the flow direction of the gas discharged in the first air hole 18, so that the gas discharged in the first air hole 18 can quickly fill the entire arc-shaped groove 9, thereby making the semi-circular groove 11 exhaust gas evenly.

[0053] like Figure 5 , Figure 7 As shown, a mounting rod 21 is horizontally rotatably mounted on the side wall of the turbulence block 20, and turbulence plates 22 are uniformly and obliquely fixedly mounted on the mounting rod 21. During the process of airflow impacting the turbulence block 20, part of the airflow comes into contact with the turbulence plates 22. At this time, under the action of the airflow impact force, the turbulence plates 22 drive the mounting rod 21 to rotate, further expanding the diffusion range of the gas discharged from the first air hole 18, and further improving the rate at which the gas is uniformly distributed in the arc-shaped groove 9.

[0054] like Figure 5As shown, the sidewall of the arc-shaped groove 9 away from the first air hole 18 is uniformly provided with arc-shaped protrusions 23. Therefore, during the rotation of the baffle plate 22, it will intermittently hit the protrusions 23. At this time, the protrusions 23 transmit the impact force to the buffer pad 6, which can bounce the sand particles on the surface of the buffer pad 6 away, reducing the probability of sand particles falling onto the cable surface, and thus preventing sand particles on the cable surface from entering the connection between the cable and the buffer pad 6. At the same time, the buffer pad 6 is prone to cracks when exposed to the outside for a long time. Therefore, bouncing the particles away can prevent the particles from entering the cracks and improve the protection effect of the buffer pad 6. The protrusions 23 are made of elastic material. Therefore, when the baffle plate 22 hits the protrusions 23, the baffle plate 22 will be bounced away under the action of the reaction force, thereby causing the baffle block 20 to shake irregularly, further improving the turbulence effect.

[0055] like Figure 2 As shown, since the stranded wire 2 is made of multiple metal wires twisted together, there are small gaps between the metal wires of the stranded wire 2, and the metal wires of the stranded wire 2 will rub against each other during the vibration of the weight 3.

[0056] The stranded wire 2 and the conduit 17 are both covered with a protective sleeve 24 made of elastic material. The two ends of the protective sleeve 24 are fixedly connected to the side wall of the counterweight 3 and the side wall of the support 1, respectively. Therefore, in windy weather, it can prevent airborne particles from contacting the stranded wire 2, thus protecting the stranded wire 2. The protective sleeve 24 is made of heat-insulating material. Therefore, the heat generated by the friction between the metal wires that make up the stranded wire 2 during the vibration of the counterweight 3 will be transferred to the conduit 17, thereby raising the temperature of the gas inside the conduit 17. Therefore, by bringing the hotter gas into contact with the elastic material buffer pad 6, the buffer pad 6 can be heated, thereby preventing the elastic material buffer pad 6 from hardening and becoming brittle. This ensures that the buffer pad 6 can maintain its flexibility and elasticity, that is, it ensures that the buffer pad 6 can expand.

[0057] like Figure 6 As shown, when the entire device is installed, twisted wire 2 is parallel to the cable, so when the cable is energized, an induced magnetic field is generated around the cable.

[0058] A groove 25 is provided on the inner bottom wall of the sleeve 12, and a gantry 26 is slidably installed in the groove 25. A drive mechanism that cooperates with the gantry 26 is provided inside the sleeve 12. During the swing of the weight 3, the drive mechanism drives the gantry 26 to move along the groove 25. At this time, the gantry 26 also has displacement in the horizontal direction. A metal rod 27 and a resistance wire 28 are provided on the horizontal section of the gantry 26. The metal rod 27 and the resistance wire 28 are connected in series. Therefore, during the movement of the gantry 26 along the groove 25, the gantry 26 will move in the horizontal direction. At this time, the metal rod 27 cuts the magnetic field lines. The induced magnetic field generated around the energized cable is existing technology and will not be described in detail. Therefore, the resistance wire 28 connected in series with the metal rod 27 will heat up, thereby improving the heating effect on the gas discharged from the sleeve 12. In winter, it ensures the elasticity of the buffer pad 6 and plays a role in ensuring that the buffer pad 6 can deform.

[0059] like Figure 6 As shown, the driving mechanism includes a diagonal rod 29 fixedly installed on the bottom wall of the counterweight 14. The diagonal rod 29 cooperates with the horizontal section of the gantry 26. During the up-and-down swing of the counterweight 3, the counterweight 14 will intermittently approach the inner bottom wall of the sleeve 12 under the action of inertia. When the counterweight 14 approaches the inner bottom wall of the sleeve 12, the diagonal rod 29 applies a horizontal thrust to the gantry 26 under the action of the diagonal rod 29. Therefore, the gantry 26 will move in the horizontal direction. An elastic bellows 30 is provided between the gantry 26 and the side wall of the slide 25. At this time, the elastic bellows 30 deforms. When the counterweight 14 moves away from the inner bottom wall of the sleeve 12, the pressure applied by the diagonal rod 29 to the gantry 26 decreases. At this time, the elastic bellows 30 pulls the gantry 26 back to its original position.

[0060] like Figure 6 As shown, the elastic bellows 30 has a second vent 31. Therefore, when the elastic bellows 30 is stretched, air is drawn in through the second vent 31. When the elastic bellows 30 returns to its original state, the gas inside is discharged through the second vent 31. The second vent 31 cooperates with the resistance wire 28. Therefore, the gas discharged from the second vent 31 will impact the air around the resistance wire 28, increasing the probability of contact between the gas in the sleeve 12 and the resistance wire 28, improving the heat exchange effect, thereby improving the utilization rate of the heat generated by the resistance wire 28, ensuring that the heat generated by the resistance wire 28 can be transferred to the buffer pad 6 in a timely manner, thus improving the heating effect of the buffer pad 6.

[0061] like Figure 3 As shown, the buffer pad 6 is made of rubber material. Because rubber material has good weather resistance, it can maintain stable performance in harsh environments such as sunlight and rain. At the same time, rubber also has a certain degree of corrosion resistance and can resist the erosion of chemicals such as acids and alkalis. It is suitable for various complex outdoor environments. Therefore, the buffer pad 6 made of rubber material plays a role in improving the stability of the device.

[0062] like Figure 6 As shown, the weight 3 has a mounting hole, and the sleeve 12 has a hole on its side wall that communicates with the mounting hole. A shape memory alloy wire 32 is installed on the side wall of the mounting hole. Because the weight 3 is made of metal, it has good thermal conductivity. Therefore, when the ambient temperature is high, the shape memory alloy wire 32 is in an extended state; when the ambient temperature is low, the shape memory alloy wire 32 is in a contracted state. A heat-conducting rod 33 communicating with the outside is embedded in the bottom wall of the sleeve 12. A heat-insulating plate 34 that cooperates with the heat-conducting rod 33 is slidably installed on the inner wall of the sleeve 12. The heat-insulating plate 34 is connected to the shape memory alloy wire 32. In summer, when the temperature is high, the extended shape memory alloy wire 32 causes the insulation plate 34 to detach from the surface of the heat-conducting rod 33, thereby making the internal temperature of the sleeve 12 the same as the external temperature. During the venting process of the sleeve 12, it can prevent the buffer pad 6 from overheating and softening, thus improving the fixing effect on the bracket 1 and the cable. In winter, the contracted shape memory alloy wire 32 causes the insulation plate 34 to move to the surface of the heat-conducting rod 33, thereby preventing heat dissipation inside the sleeve 12, improving the heat utilization rate of the resistance wire 28, and ensuring that the buffer pad 6 has sufficient elasticity.

[0063] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A cable protection fitting for electric power engineering, comprising a support (1) provided with a stranded wire (2), the end of the stranded wire (2) being provided with a weight (3); characterized in that: it further comprises a pressing plate (4) and a U-shaped bolt (5), the pressing plate (4) being detachably connected with the support (1), the support (1) being provided with a wire slot; the pressing plate (4) and the side wall of the wire slot are both provided with a buffer pad (6) made of elastic material; an arc-shaped cavity (7) is formed in the buffer pad (6), an arc-shaped communication groove (8) is formed in the side wall of the buffer pad (6) and communicates with the arc-shaped cavity (7), the communication groove (8) is used for communicating the arc-shaped cavities (7) on the two buffer pads (6), the weight (3) is provided with a gas supply assembly matched with the communication groove (8); an arc-shaped groove (9) is formed in the inner side wall of the buffer pad (6), a pressure relief valve (10) is embedded in the side wall of the arc-shaped cavity (7) and communicates with the arc-shaped groove (9), a semicircular groove (11) is formed in the side wall of the arc-shaped cavity (7) away from the arc-shaped groove (9), and the buffer pad (6) is provided with a stirring assembly matched with the arc-shaped groove (9); the gas supply assembly comprises a sleeve (12) embedded in the weight (3), an elastic film (13) is fixedly installed in the sleeve (12), a counterweight (14) is embedded in the elastic film (13), an air inlet valve (15) and an air outlet valve (16) are embedded in the side wall of the sleeve (12), and a conduit (17) extending into the communication groove (8) is installed at the output end of the air outlet valve (16); the stirring assembly comprises a first air hole (18) formed in the side wall of the arc-shaped groove (9), the first air hole (18) is funnel-shaped, the output end of the pressure relief valve (10) communicates with the first air hole (18), the diameter of the first air hole (18) near the arc-shaped groove (9) is larger than the diameter of the first air hole (18) near the arc-shaped cavity (7), an elastic rope (19) is fixedly installed in the first air hole (18), and a turbulence block (20) is fixedly installed on the elastic rope (19); a sliding groove (25) is formed in the inner bottom wall of the sleeve (12), a gantry (26) is slidingly installed in the sliding groove (25), and a driving mechanism matched with the gantry (26) is arranged in the sleeve (12); a metal rod (27) and a resistance wire (28) are arranged on the horizontal section of the gantry (26), and the metal rod (27) and the resistance wire (28) are connected in series; the driving mechanism comprises an inclined rod (29) fixedly installed on the bottom wall of the counterweight (14), the inclined rod (29) is matched with the horizontal section of the gantry (26), and an elastic bellows (30) is arranged between the gantry (26) and the side wall of the sliding groove (25).

2. A cable protection fitting for electrical engineering according to claim 1, characterized in that: a mounting rod (21) is horizontally rotatably installed on the side wall of the turbulence block (20), and turbulence fins (22) are uniformly and obliquely fixedly installed on the mounting rod (21).

3. A cable protection fitting for electrical engineering according to claim 1, characterized in that: uniformly arranged on the side wall of the arc-shaped groove (9) away from the first air hole (18), the protrusions (23) are made of elastic material.

4. The cable protection fitting for power engineering according to claim 1, characterized in that: The twisted wire (2) and the catheter (17) are jointly sleeved with a protective sleeve (24) made of elastic material, two ends of the protective sleeve (24) are fixedly connected with the side wall of the weight (3) and the side wall of the support (1) respectively, and the protective sleeve (24) is made of heat insulation material.

5. The cable protection fitting for power engineering according to claim 1, characterized in that: The elastic bellows (30) is provided with a second air hole (31), and the second air hole (31) is matched with the resistance wire (28).

6. A cable protection fitting for electrical engineering according to claim 1, characterized in that: The weight (3) is provided with a mounting hole, the side wall of the sleeve (12) is provided with a hole communicating with the mounting hole, and the side wall of the mounting hole is provided with a memory alloy wire (32); the bottom wall of the sleeve (12) is embedded with a heat conduction rod (33) communicating with the outside, the inner wall of the sleeve (12) is slidably provided with a heat preservation plate (34) matched with the heat conduction rod (33), and the heat preservation plate (34) is connected with the memory alloy wire (32).

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