A displacement amplification damper applied to a power transmission line

Abstract

This invention discloses a displacement amplification damper for power transmission lines, comprising a guiding device, a viscoelastic energy dissipation device, a steel pipe torsional yielding energy dissipation device, and a rotating plate. The guiding device is connected to the steel pipe torsional yielding energy dissipation device, which is connected to the viscoelastic energy dissipation device via the rotating plate. The guiding device includes a main support shaft and a secondary support shaft, which are connected to the transmission tower and hinged to the rotating plate via a mounting plate and an ear plate. The viscoelastic energy dissipation device includes a constraint end plate, a constraint steel pipe, a pin, a fan-shaped rotating shaft, and a viscoelastic energy dissipation rubber rod. The viscoelastic energy dissipation rubber rod engages with the groove of the fan-shaped rotating shaft to dissipate energy. The steel pipe torsional yielding energy dissipation device includes an outer steel pipe, a stiffening plate, and a stiffening steel pipe, further dissipating energy through torsional yielding. This invention effectively protects power transmission lines from vibration through displacement amplification and multiple energy dissipation mechanisms, improving the safety and stability of power transmission lines.

Description

Technical Field

[0001] This invention belongs to the field of power engineering technology, specifically relating to a displacement amplification damper applied to power transmission lines. Background Technology

[0002] A damper is a structural vibration control device. It absorbs and dissipates the vibration energy caused by external dynamic loads by utilizing mechanical energy dissipation mechanisms during structural vibration, such as metal yielding, friction, and fluid damping, thereby reducing structural stress and vibration intensity. However, for small-deformation structures like power transmission lines, traditional dampers have limitations in energy dissipation efficiency and meeting vibration reduction requirements, making them unsuitable for the challenges faced by power transmission lines as a crucial component bearing dynamic loads under icing conditions. Compared to traditional dampers, displacement amplification dampers, through the displacement amplification effect of mechanical structures, can amplify small input displacements into large outputs, thus significantly improving damping efficiency. Dampers using levers or gears, in particular, exhibit the most significant displacement amplification effect, effectively expanding the damping range and better meeting the high vibration reduction requirements of power transmission tower-line systems under severe winter icing conditions. Simultaneously, these new dampers retain the reliability advantages of traditional dampers. Tests with physical models show that its vibration reduction effect is significantly better than that of traditional dampers alone, and it is more conducive to improving the safety performance of iced transmission tower networks under dynamic loads. Effective displacement amplification damping technology provides high-quality vibration reduction protection for severely iced transmission lines, improving the wind and ice resistance of the entire network.

[0003] Gear-mechanism displacement amplification damper uses drive gears and transmission gears of different sizes. For every revolution of the drive gear, the transmission gear rotates only a small proportional angle, thus amplifying the displacement. The drive gear and transmission gear are connected by an elastic connector such as a spring. When the drive gear rotates, it generates a pulling force that drives the transmission gear to rotate synchronously. A damping element, such as an energy absorption mechanism or a viscous liquid damper, is installed at the end of the transmission gear. When the transmission gear rotates to amplify the displacement under the drive gear, the damping element generates a damping force to counteract the inertial force and reduce the vibration amplitude. By adjusting the ratio of the drive gear to the transmission gear, the stiffness of the connecting spring, and the damping coefficient of the damping element, effective damping control of inertial forces of different frequencies and amplitudes can be achieved. It utilizes the deceleration effect of gear transmission to amplify the displacement, and simultaneously dampens the amplified displacement signal through a damping device, thereby effectively eliminating inertial forces.

[0004] The linkage mechanism displacement amplification damper amplifies displacement through a series of linked linkages. The drive rod reciprocates, driving the second link via the first. Due to the different guide lengths of the links, the second link's amplitude of motion is greater than the first, thus amplifying the displacement. A damping device, such as a viscous damper or a hydraulic damper, is installed at the other end of the second link. As the second link reciprocates with amplified motion, the damping device generates a damping force to counteract its inertial force. The amplification factor can be controlled by adjusting the length ratio of each link, and the damping coefficient of the damping device can be adjusted to optimize the damping effect. When an external force, such as vibration, is applied to the drive rod, it is transmitted to the second link. However, because its amplitude of motion is amplified, the damping force generated by the damping device also increases, thus more effectively eliminating the prime mover.

[0005] The unique amplifying damper in a lever mechanism uses a lever with a fulcrum as its support point. One end of the lever serves as the input, equipped with a drive mechanism. The drive mechanism reciprocates, and the other end of the lever serves as the output, amplifying the displacement relative to the input. This is due to the lever principle, where the distance from the output to the fulcrum is greater than the distance from the input to the fulcrum. A damper, such as a viscous fluid damper, is installed at the output. With the reciprocating motion of the lever at the output end, the damper generates a damping force in the same direction. When an external vibration force is applied to the input end, the amplitude of the output's motion increases due to the lever's displacement amplification. The damping force generated by the damper thus increases accordingly. By optimizing the lever arm length ratio and adjusting the damper's damping coefficient, the amplified vibration signal can be effectively counteracted, resulting in excellent vibration reduction.

[0006] The bridge-type displacement amplification damper employs a bridge-type linkage mechanism, consisting of two relatively moving links. One link is fixed to the bridge frame as a base, while the other serves as a movable link. One end of the movable link acts as the input, receiving vibration displacement input, while the other end is connected to the base link via a support slider. The support slider can move smoothly on the base link, achieving a unique motion of the movable link relative to the base link. The output end of the movable link has an amplification effect relative to the input end because the support slider fixes the trajectory of the output end. A damping device, such as a viscous damper, is installed at the output end. As the output end amplifies the motion, the damper generates a damping reaction force. By optimizing the structural proportions, the desired amplification ratio can be achieved. Appropriate damper selection can provide damping for different frequencies. When the input end is subjected to force, the output end amplifies the energy and drives the damper, which absorbs the amplified energy, resulting in excellent vibration reduction.

[0007] However, existing amplified dampers have a single energy dissipation mechanism, which is still insufficient to meet the high energy consumption requirements of icing transmission tower-line systems and cannot be applied to the energy dissipation needs of various types of structures. Therefore, developing a damper with a composite energy dissipation mechanism and displacement amplification function that can be applied to structural vibration reduction requirements will be of great significance to the reliability of transmission tower-line systems under icing disasters. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a damper that can effectively protect transmission lines from vibration and improve the safety and stability of transmission lines through displacement amplification and multiple energy dissipation mechanisms.

[0009] The technical solution of this invention is as follows:

[0010] A displacement amplification damper for power transmission lines includes: a guiding device, a viscoelastic energy dissipation device, a steel pipe torsional yielding energy dissipation device, and a rotating plate. The guiding device is connected to the steel pipe torsional yielding energy dissipation device, which is connected to the viscoelastic energy dissipation device via several rotating plates. The guiding device includes a main support shaft and a secondary support shaft, both of which are fitted with mounting plates. One end of the main support shaft is slidably connected to one end of the secondary support shaft, and the other ends of the main and secondary support shafts are respectively connected to the crossarms of two adjacent transmission towers or the tower body. Several ear plates are provided on the mounting plates. The viscoelastic energy dissipation device includes: a constraint end plate, a constraint steel pipe, a pin, a fan-shaped rotating shaft, and a viscoelastic energy dissipation rubber rod. The inner side of the constraint end plate is connected to one side of the constraint steel pipe and the fan-shaped rotating shaft. The constrained steel pipe is sleeved on the fan-shaped rotating shaft. Several viscoelastic energy-dissipating rubber rods are arranged inside the constrained steel pipe. The viscoelastic energy-dissipating rubber rods engage with the grooves between the fan blades of the fan-shaped rotating shaft. The other side of the constrained steel pipe and the fan-shaped rotating shaft is connected to one side of a rotating plate. The other end of the rotating plate is hinged to an ear plate via another pin. A constrained end plate, two constrained steel pipes, and two fan-shaped rotating shafts are respectively arranged on the front and rear sides of the rotating plate. The pin passes sequentially through the constrained end plates, constrained steel pipes, and fan-shaped rotating shafts on the front and rear sides of the rotating plate and connects to the outer side of the constrained end plates. The steel pipe torsional yielding energy dissipation device includes: an outer steel pipe, a stiffening plate, and a stiffening steel pipe. The stiffening steel pipe is sleeved on the constrained steel pipe. The stiffening steel pipe is connected to the outer steel pipe via several stiffening plates. One side of the outer steel pipe is connected to the rotating plate, and the other side is connected to the constrained end plate.

[0011] Furthermore, both the main support shaft and the secondary support shaft are hollow square tube structures.

[0012] Furthermore, the included angle between the secondary support shaft and the rotating plate is less than 45°, and the included angle between the main support shaft and the rotating plate is less than 45°.

[0013] Furthermore, the viscoelastic energy dissipation device and the steel pipe torsional yield energy dissipation device are evenly distributed around the axis of the main support shaft.

[0014] Furthermore, the stiffening plate is a rectangular plate, with one end of the stiffening plate fixedly connected to the outside of the stiffening steel pipe and the other end fixedly connected to the inside of the outer steel pipe.

[0015] Furthermore, the pin is a cylindrical pin, and a circular fixing plate is provided at the end of the pin.

[0016] Furthermore, the viscoelastic energy-dissipating rubber rod is made of a high-damping rubber material.

[0017] Furthermore, the outer steel pipe is a cylindrical steel pipe, and the inner diameter of the outer steel pipe is larger than the outer diameter of the reinforcing steel pipe.

[0018] A method for using a displacement amplifying damper applied to transmission lines includes the following steps:

[0019] Step 1, Preparation, including the following steps:

[0020] Step 1.1: Check the integrity of the equipment: Carefully check whether all parts of the damper are complete, and check whether each part is damaged, deformed or missing;

[0021] Step 1.2, Tool Preparation: Prepare the necessary tools for installation, including: wrenches, screwdrivers, lifting equipment, and measuring tools;

[0022] Step 1.3, Safety Measures: Ensure there are no safety hazards at the installation site and clear away debris; installation personnel must wear personal protective equipment, including safety helmets, gloves, and protective shoes; if working at height, safety ropes must be worn and their anchor points must be confirmed to be secure;

[0023] Step 2: Install the guide device, including the following steps:

[0024] Step 2.1: Connect the main support shaft: Align one end of the main support shaft with the predetermined installation position of the crossarm of the transmission tower head or the tower body layer, use bolts to pass through the connecting holes of the main support shaft and fix it to the transmission tower, tighten the nuts to ensure that there is no looseness, and use a wrench to check the tightness of each bolt to avoid looseness;

[0025] Step 2.2, Connect the secondary support shaft: Slide one end of the secondary support shaft to the other end of the main support shaft, and check whether the connection is smooth. If it is not smooth, apply a small amount of lubricant.

[0026] Step 2.3, Fix the secondary support shaft: Align the other end of the secondary support shaft with the adjacent transmission tower head crossarm or tower body layer, and use bolts to firmly fix it, and repeat the tightening and inspection steps.

[0027] Step 2.4: Install the mounting plate and ear plate: Fit the two mounting plates onto the main support shaft and the auxiliary support shaft respectively, and fix the mounting plates with bolts. The ear plate should face the same direction as the connection direction of the rotating plate.

[0028] Step 3: Install the viscoelastic energy dissipation device, including the following steps:

[0029] Step 3.1: Connect the fan-shaped shaft to the constraint end plate: Align one side of the fan-shaped shaft with the connection hole of the constraint end plate, use small bolts to initially fix it, manually rotate the fan-shaped shaft to confirm that it rotates flexibly and without any resistance.

[0030] Step 3.2, Connecting the constraint steel pipe and viscoelastic energy-dissipating rubber rod: Place the constraint steel pipe onto the fan-shaped rotating shaft, ensuring that the viscoelastic energy-dissipating rubber rod inside the constraint steel pipe is fully engaged with the fan blade groove of the fan-shaped rotating shaft;

[0031] Step 3.3, Connect the rotating plate: Connect the other side of the constraint steel pipe and the fan-shaped rotating shaft to one side of the rotating plate;

[0032] Step 3.4: Arrange a symmetrical structure: Install a constraint end plate, two constraint steel pipes and two fan-shaped rotating shafts on the front and rear sides of the rotating plate to ensure front-to-back symmetry and consistent component positions to avoid skewing;

[0033] Step 3.5, Fix the pin: Pass the pin through the constraint end plate, constraint steel pipe and fan-shaped rotating shaft on the front side of the rotating plate in sequence, and then through the corresponding component on the rear side, and fix the end of the pin to the outside of the constraint end plate;

[0034] Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps:

[0035] Step 4.1, Connect the reinforcing steel pipe: Place the reinforcing steel pipe over the outside of the restraining steel pipe;

[0036] Step 4.2: Connect the stiffening plates: Connect the stiffening steel pipe and the outer steel pipe with several stiffening plates. Weld one end of the stiffening plate to the stiffening steel pipe and fix the other end to the outer steel pipe.

[0037] Step 4.3, Fix the external steel pipe: Connect one side of the external steel pipe to the rotating plate and fix the other side to the constraint end plate;

[0038] Step 5: Connect the rotating plate, including the following steps:

[0039] Step 5.1: Hinge the rotating plate and the ear plate: Align the other end of the rotating plate with the ear plate on the mounting plate, use a pin to pass through the connection hole between the rotating plate and the ear plate, and hinge the two ends of the pin to prevent them from falling off.

[0040] Step 5.2: Check rotation flexibility: Manually push the rotating plate to confirm that it rotates smoothly without jamming, and check whether the pin is loose;

[0041] Step 6, debugging and inspection, includes the following steps:

[0042] Step 6.1, Simulated Displacement Test: Manually simulate the displacement of the transmission line and observe whether the sliding of the main support shaft and the auxiliary support shaft, the rotation of the rotating plate, and the rotation of the fan-shaped shaft are normal.

[0043] Step 6.2: Check the connection points: Use a wrench to check each bolt, pin, and other connection point to ensure that there is no looseness;

[0044] Step 6.3, Verify the energy-consuming components: Check whether the viscoelastic energy-consuming rubber rod and the fan-shaped rotating shaft are in close contact and without falling off.

[0045] The beneficial effects of this invention are:

[0046] 1. Combination of Displacement Amplification and High-Efficiency Energy Dissipation: This invention achieves displacement amplification through the cooperation of the main support shaft and the secondary support shaft and the hinge design of the rotating plate, enabling the structure to trigger the energy dissipation mechanism even with small displacements; the viscoelastic energy dissipation device (a fan-shaped rotating shaft combined with a viscoelastic energy dissipation rubber rod) and the steel pipe torsional yielding energy dissipation device (composed of an external steel pipe, a stiffening steel pipe, and a stiffening plate) work together to form a multi-level, multi-stage energy dissipation, enabling the device to effectively dissipate energy under dynamic actions such as wind vibration and earthquakes of varying intensities;

[0047] 2. Multi-level energy dissipation to improve vibration reduction efficiency: The viscoelastic rubber rod of this invention can provide a certain damping under small and medium displacement conditions, absorbing high-frequency, low-energy vibrations; the torsional yielding of the steel pipe generates plastic deformation and further dissipates energy under medium and large displacement conditions, and can withstand higher energy impacts or vibrations; the superposition of dual energy dissipation paths enables the device to significantly reduce structural response under various vibration levels, ensuring the safety and stability of transmission lines.

[0048] 3. Flexible structural design, convenient installation and maintenance: The main support shaft and the auxiliary support shaft of this invention are hollow square tube structures, which are lightweight and have high overall rigidity, making them easy to transport and install on transmission towers; the auxiliary support shaft and the main support shaft adopt a sliding sleeve connection, which is convenient for fine adjustment or extension according to the actual distance on site; by setting ear plates on the mounting plate and using pins to realize the hinge connection of the rotating plate, a large range of motion and adaptability can be provided for the device while ensuring a firm connection, which is convenient for later inspection and maintenance;

[0049] 4. Symmetrical arrangement for stable mechanical performance: The viscoelastic energy dissipation device (including the constraint steel pipe, the fan-shaped rotating shaft, and the viscoelastic energy dissipation rubber rod) of the present invention is symmetrically arranged on the front and rear sides of the rotating plate. This not only balances the mechanical environment on both sides of the device and avoids eccentricity or excessive local stress, but also simplifies the stress on the overall structure. This symmetrical design can better ensure uniform stress on the components when the force is large, and reduce fatigue damage at the connection parts.

[0050] 5. High reliability and long service life of combined energy-dissipating components: Viscoelastic materials can reduce fatigue accumulation by absorbing small vibration energy, providing continuous vibration damping protection for the structure; the amount of plastic deformation of the torsional yielding part of the steel pipe is controllable, and the overall strength and durability can be improved by stiffening plates and stiffening steel pipes to avoid premature failure; the setting of multiple energy-dissipating components makes the stress level of individual components relatively dispersed, extending the overall service life.

[0051] 6. Wide adaptability and safety: This invention can adapt to the installation requirements of different layers of transmission towers (tower head crossarm, tower body layer), and the installation angle is flexible (the included angle between the main support shaft and the rotating plate, or between the auxiliary support shaft and the rotating plate, can be less than 45°), providing the possibility of modification or new installation for diversified transmission line structures; for high-altitude operations, the components can be modularly assembled to a certain extent before leaving the factory, and only the splicing of key parts and bolt tightening are required on site, which greatly reduces the construction difficulty and risk;

[0052] 7. Significant vibration reduction effect, improving the safe operation of transmission lines: Under the action of wind vibration, micro-vibration and other complex environmental loads, the displacement amplification damper of the present invention can effectively reduce the vibration amplitude of the tower body, reduce fatigue damage to the line, hardware and tower body; ensure the stability and safety of transmission lines in long-term operation, and reduce the frequency of line maintenance and overall operating costs.

[0053] In summary, the displacement amplification damper for power transmission lines of the present invention achieves efficient vibration energy absorption and structural protection through the organic combination of multiple energy dissipation methods such as main support shaft, secondary support shaft, rotating plate, viscoelasticity and steel pipe torsional yielding. While meeting the adaptability to various field conditions, it also has the convenience of installation and maintenance, and has good practical value and promotion prospects. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1This is a schematic diagram of the structure of a displacement amplification damper applied to power transmission lines according to the present invention.

[0056] Figure 2 This is a schematic diagram of the structure of a fan-shaped rotating shaft of a displacement amplification damper applied to power transmission lines according to the present invention.

[0057] Figure 3 This is a schematic diagram of the structure of a constraint steel pipe for a displacement amplification damper applied to a power transmission line according to the present invention.

[0058] Figure 4 This is a schematic diagram of the main support shaft of a displacement amplification damper applied to power transmission lines according to the present invention.

[0059] Figure 5 This is a schematic diagram of the structure of the auxiliary support shaft of a displacement amplification damper applied to power transmission lines according to the present invention.

[0060] Figure 6 This is a schematic diagram of the structure of a stiffening steel pipe for a displacement amplification damper applied to a power transmission line according to the present invention.

[0061] Figure 7 This is a schematic diagram of the structure of a pin shaft of a displacement amplification damper applied to power transmission lines according to the present invention.

[0062] Figure 8 This is a schematic diagram of the structure of the constraint end plate of a displacement amplification damper applied to a power transmission line according to the present invention.

[0063] Figure 9 This is a schematic diagram of the rotating plate of a displacement amplification damper applied to power transmission lines according to the present invention.

[0064] Figure 10 This is a schematic diagram of the structure of a viscoelastic energy-dissipating rubber rod for a displacement amplification damper applied to power transmission lines, according to the present invention.

[0065] In the diagram: 1-Constraint end plate, 2-Constraint steel pipe, 3-Pin, 4-Ear plate, 5-Fan-blade type rotating shaft, 6-Secondary support shaft, 7-Rotating plate, 8-Main support shaft, 9-Mounting plate, 10-Viscoelastic energy-dissipating rubber rod, 11-External steel pipe, 12-Stiffening plate, 13-Stiffening steel pipe. Detailed Implementation

[0066] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. 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.

[0067] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] like Figure 1-10 As shown, a displacement amplification damper for power transmission lines includes: a guiding device, a viscoelastic energy dissipation device, a steel pipe torsional yielding energy dissipation device, and a rotating plate 7. The guiding device is connected to the steel pipe torsional yielding energy dissipation device, which is connected to the viscoelastic energy dissipation device via several rotating plates 7. The guiding device includes: a main support shaft 8 and a secondary support shaft 6, both of which are fitted with mounting plates 9. One end of the main support shaft 8 is slidably sleeved with one end of the auxiliary support shaft 6. The other ends of the main support shaft 8 and the auxiliary support shaft 6 are respectively connected to the crossarm of the tower head or the tower body of the two adjacent layers of the transmission tower. Several ear plates 4 are provided on the mounting plate 9. The viscoelastic energy dissipation device includes: a constraint end plate 1, a constraint steel pipe 2, a pin 3, a fan-shaped rotating shaft 5, and a viscoelastic energy dissipation rubber rod 10. The inner side of the constraint end plate 1 is connected to one side of the constraint steel pipe 2 and the fan-shaped rotating shaft 5. The constraint steel pipe 2 is sleeved on... On the fan-shaped rotating shaft 5, several viscoelastic energy-dissipating rubber rods 10 are arranged inside the constraint steel pipe 2. The viscoelastic energy-dissipating rubber rods 10 are engaged with the grooves between the fan blades of the fan-shaped rotating shaft 5. The other side of the constraint steel pipe 2 and the fan-shaped rotating shaft 5 is connected to one end side of the rotating plate 7. The other end of the rotating plate 7 is hinged to the ear plate 4 through another pin 3. A constraint end plate 1, two constraint steel pipes 2 and two fan-shaped rotating shafts 5 are respectively arranged on the front and rear sides of the rotating plate 7. The pin 3 passes sequentially through the constraint end plates 1, constraint steel pipe 2, and fan-shaped rotating shaft 5 on the front and rear sides of the rotating plate 7 and is connected to the outside of the constraint end plate 1; the steel pipe torsional yield energy dissipation device includes: an outer steel pipe 11, a stiffening plate 12, and a stiffening steel pipe 13. The stiffening steel pipe 13 is sleeved on the constraint steel pipe 2. The stiffening steel pipe 13 is connected to the outer steel pipe 11 through several stiffening plates 12. One side of the outer steel pipe 11 is connected to the rotating plate 7, and the other side is connected to the constraint end plate 1.

[0069] Preferably, both the main support shaft 8 and the secondary support shaft 6 are hollow square tube structures.

[0070] Preferably, the included angle between the secondary support shaft 6 and the rotating plate 7 is less than 45°, and the included angle between the main support shaft 8 and the rotating plate 7 is less than 45°.

[0071] Preferably, the viscoelastic energy dissipation device and the steel pipe torsional yield energy dissipation device are evenly distributed around the axis of the main support shaft 8.

[0072] Preferably, the stiffening plate 12 is a rectangular plate, with one end of the stiffening plate 12 fixedly connected to the outside of the stiffening steel pipe 13 and the other end fixedly connected to the inside of the outer steel pipe 11.

[0073] Preferably, the pin 3 is a cylindrical pin, and the end of the pin 3 is provided with a circular fixing plate.

[0074] Preferably, the viscoelastic energy-dissipating rubber rod 10 is made of a high-damping rubber material.

[0075] Preferably, the outer steel pipe 11 is a cylindrical steel pipe, and the inner diameter of the outer steel pipe 11 is larger than the outer diameter of the reinforcing steel pipe 13.

[0076] A method for using a displacement amplifying damper applied to transmission lines includes the following steps:

[0077] Step 1, Preparation, including the following steps:

[0078] Step 1.1: Check the integrity of the equipment: Carefully check whether all parts of the damper are complete, and check whether each part is damaged, deformed or missing;

[0079] Step 1.2, Tool Preparation: Prepare the necessary tools for installation, including: wrenches, screwdrivers, lifting equipment, and measuring tools;

[0080] Step 1.3, Safety Measures: Ensure there are no safety hazards at the installation site and clear away debris; installation personnel must wear personal protective equipment, including safety helmets, gloves, and protective shoes; if working at height, safety ropes must be worn and their anchor points must be confirmed to be secure;

[0081] Step 2: Install the guide device, including the following steps:

[0082] Step 2.1: Connect the main support shaft: Align one end of the main support shaft 8 with the predetermined installation position of the crossarm of the tower head or the tower body layer, use bolts to pass through the connecting holes of the main support shaft 8 and fix it to the transmission tower, tighten the nuts to ensure that there is no looseness, and use a wrench to check the tightness of each bolt to avoid looseness;

[0083] Step 2.2, Connect the secondary support shaft: Slide one end of the secondary support shaft 6 to the other end of the main support shaft 8, and check whether the connection is smooth. If it is not smooth, apply a small amount of lubricant.

[0084] Step 2.3, Fix the secondary support shaft: Align the other end of the secondary support shaft 6 with the adjacent transmission tower head crossarm or tower body layer, and use bolts to firmly fix it, and repeat the tightening and inspection steps.

[0085] Step 2.4: Install the mounting plates and ear plates: Fit the two mounting plates 9 onto the main support shaft 8 and the auxiliary support shaft 6 respectively, and fix the mounting plates 9 with bolts. The ear plates should face the same direction as the rotating plate 7.

[0086] Step 3: Install the viscoelastic energy dissipation device, including the following steps:

[0087] Step 3.1: Connect the fan-shaped rotating shaft to the constraint end plate: Align one side of the fan-shaped rotating shaft 5 with the connection hole of the constraint end plate 1, use small bolts to initially fix it, manually rotate the fan-shaped rotating shaft 5 to confirm that it rotates flexibly and without any resistance.

[0088] Step 3.2, Connecting the constraint steel pipe and viscoelastic energy-dissipating rubber rod: Place the constraint steel pipe 2 on the fan-shaped rotating shaft 5, ensuring that the viscoelastic energy-dissipating rubber rod 10 inside the constraint steel pipe 2 is fully engaged with the fan blade groove of the fan-shaped rotating shaft 5;

[0089] Step 3.3: Connect the rotating plate: Connect the other side of the constraint steel pipe 2 and the fan-shaped rotating shaft 5 to one side of the rotating plate 7;

[0090] Step 3.4: Arrange a symmetrical structure: Install a constraint end plate 1, two constraint steel pipes 2 and two fan-shaped rotating shafts 5 on the front and rear sides of the rotating plate 7 to ensure front-to-back symmetry and consistent component positions to avoid skewing;

[0091] Step 3.5, Fix the pin: Pass the pin 3 through the constraint end plate 1, constraint steel pipe 2, and fan-shaped rotating shaft 5 on the front side of the rotating plate 7 in sequence, and then through the corresponding component on the rear side, and fix the end of the pin 3 to the outside of the constraint end plate 1.

[0092] Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps:

[0093] Step 4.1, Connecting the stiffening steel pipe: Place the stiffening steel pipe 13 on the outside of the restraining steel pipe 2;

[0094] Step 4.2: Connect the stiffening plates: Connect the stiffening steel pipe 13 and the outer steel pipe 11 with several stiffening plates 12. One end of the stiffening plate 12 is welded to the stiffening steel pipe 13, and the other end is fixed to the outer steel pipe 11.

[0095] Step 4.3, Fix the external steel pipe: Connect one side of the external steel pipe 11 to the rotating plate 7, and fix the other side to the constraint end plate 1;

[0096] Step 5: Connect the rotating plate, including the following steps:

[0097] Step 5.1: Hinge the rotating plate and the ear plate: Align the other end of the rotating plate 7 with the ear plate 4 on the mounting plate 9, and use the pin 3 to pass through the connecting hole between the rotating plate 7 and the ear plate 4 to hinge them together, and fix both ends of the pin 3 to prevent them from falling off.

[0098] Step 5.2: Check rotation flexibility: Manually push the rotating plate 7 to confirm that it rotates smoothly without jamming, and check whether the pin is loose;

[0099] Step 6, debugging and inspection, includes the following steps:

[0100] Step 6.1, Simulated Displacement Test: Manually simulate the displacement of the transmission line and observe whether the sliding of the main support shaft 8 and the auxiliary support shaft 6, the rotation of the rotating plate 7, and the rotation of the fan-shaped rotating shaft 5 are normal.

[0101] Step 6.2, Check the connection points: Use a wrench to check each bolt and pin connection point to ensure that there is no looseness;

[0102] Step 6.3, Verify the energy-consuming components: Check whether the viscoelastic energy-consuming rubber rod 10 and the fan-shaped rotating shaft 5 are in close contact and have not fallen off.

[0103] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art.

Claims

1. A displacement amplification damper for use in power transmission lines, characterized in that, include: The guide device, viscoelastic energy dissipation device, steel pipe torsional yield energy dissipation device, and rotating plate (7) are provided. The guide device is connected to the steel pipe torsional yield energy dissipation device, and the steel pipe torsional yield energy dissipation device is connected to the viscoelastic energy dissipation device through several rotating plates (7). The guide device includes a main support shaft (8) and a secondary support shaft (6). Mounting plates (9) are fixedly fitted on both the main support shaft (8) and the secondary support shaft (6). One end of the main support shaft (8) is slidably fitted with one end of the secondary support shaft (6). 8) and the other end of the auxiliary support shaft (6) are respectively connected to the crossarm of the tower head or the tower body layer of the adjacent two layers of transmission tower. The mounting plate (9) is provided with several ear plates (4); the viscoelastic energy dissipation device includes: a constraint end plate (1), a constraint steel pipe (2), a pin (3), a fan-shaped rotating shaft (5) and a viscoelastic energy dissipation rubber rod (10). The inner side of the constraint end plate (1) is connected to one side of the constraint steel pipe (2) and the fan-shaped rotating shaft (5). The constraint steel pipe (2) is sleeved on the fan-shaped rotating shaft (5). The inner side of the constraint steel pipe (2) is provided with A plurality of viscoelastic energy-dissipating rubber rods (10) are provided, and the viscoelastic energy-dissipating rubber rods (10) are engaged with the grooves between the fan blades of the fan blade-shaped rotating shaft (5). The other side of the constraint steel pipe (2) and the fan blade-shaped rotating shaft (5) are connected to one side of the rotating plate (7). The other end of the rotating plate (7) is hinged to the ear plate (4) by another pin (3). A constraint end plate (1), two constraint steel pipes (2) and two fan blade-shaped rotating shafts (5) are respectively arranged on the front and rear sides of the rotating plate (7). The pin (3) passes through the rotating plate in sequence. The front and rear sides of the plate (7) are constrained end plates (1), constrained steel pipes (2), and fan-shaped rotating shafts (5), and are connected to the outside of the constrained end plates (1); the steel pipe torsional yield energy dissipation device includes: an outer steel pipe (11), a stiffening plate (12) and a stiffening steel pipe (13). The stiffening steel pipe (13) is sleeved on the constrained steel pipe (2). The stiffening steel pipe (13) is connected to the outer steel pipe (11) through several stiffening plates (12). One side of the outer steel pipe (11) is connected to the rotating plate (7), and the other side is connected to the constrained end plates (1).

2. The displacement amplification damper for power transmission lines according to claim 1, characterized in that, Both the main support shaft (8) and the secondary support shaft (6) are hollow square tube structures.

3. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The included angle between the secondary support shaft (6) and the rotating plate (7) is less than 45°, and the included angle between the main support shaft (8) and the rotating plate (7) is less than 45°.

4. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The viscoelastic energy dissipation device and the steel pipe torsional yield energy dissipation device are evenly distributed around the axis of the main support shaft (8).

5. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The stiffening plate (12) is a rectangular plate. One end of the stiffening plate (12) is fixedly connected to the outside of the stiffening steel pipe (13), and the other end is fixedly connected to the inside of the outer steel pipe (11).

6. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The pin (3) is a cylindrical pin, and a circular fixing plate is provided at the end of the pin (3).

7. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The viscoelastic energy-dissipating rubber rod (10) is made of high-damping rubber material.

8. A displacement amplification damper for power transmission lines according to claim 1, characterized in that, The outer steel pipe (11) is a cylindrical steel pipe, and the inner diameter of the outer steel pipe (11) is larger than the outer diameter of the stiffening steel pipe (13).

9. A method of using the displacement amplifying damper of claim 1 applied to transmission lines, characterized in that, Includes the following steps: Step 1, Preparation, including the following steps: Step 1.1: Check the integrity of the equipment: Carefully check whether all parts of the damper are complete, and check whether each part is damaged, deformed or missing; Step 1.2, Tool Preparation: Prepare the necessary tools for installation, including: wrenches, screwdrivers, lifting equipment, and measuring tools; Step 1.3, Safety Measures: Ensure there are no safety hazards at the installation site and clear away debris; installation personnel must wear personal protective equipment, including safety helmets, gloves, and protective shoes; if working at height, safety ropes must be worn and their anchor points must be confirmed to be secure; Step 2: Install the guide device, including the following steps: Step 2.1: Connect the main support shaft: Align one end of the main support shaft (8) with the predetermined installation position of the crossarm of the tower head or the tower body layer, use bolts to pass through the connecting holes of the main support shaft (8) and fix it to the transmission tower, tighten the nuts to ensure that there is no looseness, and use a wrench to check the tightness of the bolts one by one to avoid loosening; Step 2.2, Connect the secondary support shaft: Slide one end of the secondary support shaft (6) to the other end of the main support shaft (8), check whether the connection is smooth. If the sliding is not smooth, apply a small amount of lubricating oil. Step 2.3, Fix the secondary support shaft: Align the other end of the secondary support shaft (6) with the adjacent tower head crossarm or tower body layer, use bolts to firmly fix it, and repeat the tightening and inspection steps; Step 2.4: Install the mounting plate and ear plate: Fit the two mounting plates (9) onto the main support shaft (8) and the auxiliary support shaft (6) respectively, and fix the mounting plates (9) with bolts. The ear plate faces the same direction as the rotating plate (7). Step 3: Install the viscoelastic energy dissipation device, including the following steps: Step 3.1: Connect the fan-shaped rotating shaft to the constraint end plate: Align one side of the fan-shaped rotating shaft (5) with the connection hole of the constraint end plate (1), use small bolts to initially fix it, manually rotate the fan-shaped rotating shaft (5) to confirm that it rotates flexibly and without any resistance. Step 3.2, Connecting the constraint steel pipe and viscoelastic energy-dissipating rubber rod: Place the constraint steel pipe (2) on the fan-shaped rotating shaft (5) to ensure that the viscoelastic energy-dissipating rubber rod (10) inside the constraint steel pipe (2) is fully engaged with the fan-shaped groove of the fan-shaped rotating shaft (5); Step 3.3, Connect the rotating plate: Connect the other side of the constraint steel pipe (2) and the fan-shaped rotating shaft (5) to one side of the rotating plate (7); Step 3.4: Arrange a symmetrical structure: Install a constraint end plate (1), two constraint steel pipes (2) and two fan-shaped rotating shafts (5) on the front and rear sides of the rotating plate (7) to ensure front and rear symmetry and consistent component positions to avoid skewing; Step 3.5, Fix the pin: Pass the pin (3) through the constraint end plate (1), constraint steel pipe (2), and fan-shaped rotating shaft (5) on the front side of the rotating plate (7) in sequence, and then through the corresponding component on the rear side to fix the end of the pin (3) to the outside of the constraint end plate (1); Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps: Step 4.1, Connecting the stiffening steel pipe: Place the stiffening steel pipe (13) on the outside of the restraining steel pipe (2); Step 4.2: Connect the stiffening plates: Connect the stiffening steel pipe (13) and the outer steel pipe (11) with several stiffening plates (12). One end of the stiffening plate (12) is welded to the stiffening steel pipe (13), and the other end is fixed to the outer steel pipe (11). Step 4.3, Fix the external steel pipe: Connect one side of the external steel pipe (11) to the rotating plate (7), and fix the other side to the constraint end plate (1); Step 5: Connect the rotating plate, including the following steps: Step 5.1, Hinging the rotating plate and the ear plate: Align the other end of the rotating plate (7) with the ear plate (4) on the mounting plate (9), and use the pin (3) to pass through the connecting hole of the rotating plate (7) and the ear plate (4) to hinge them together, and fix both ends of the pin (3) to prevent them from falling off; Step 5.2, check the rotation flexibility: manually push the rotating plate (7) to confirm that it rotates smoothly without jamming, and check whether the pin is loose; Step 6, debugging and inspection, includes the following steps: Step 6.1, Simulated displacement test: Manually simulate the displacement of the transmission line and observe whether the sliding of the main support shaft (8) and the auxiliary support shaft (6), the rotation of the rotating plate (7), and the rotation of the fan-shaped rotating shaft (5) are normal. Step 6.2, check the connection points: Use a wrench to check each bolt and pin (3) connection point to ensure that there is no looseness; Step 6.3, Verify the energy-consuming component: Check whether the viscoelastic energy-consuming rubber rod (10) and the fan-shaped rotating shaft (5) are in close contact and have not fallen off.

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