Displacement amplification damper applied to power transmission line

Abstract

The invention discloses a displacement amplification damper applied to a power transmission line. The displacement amplification damper comprises a guide device, a viscoelastic energy consumption device, a steel pipe torsion yield energy consumption device and a rotating plate. The guiding device is connected with the steel pipe torsion yield energy dissipation device, and the steel pipe torsion yield energy dissipation device is connected with the viscoelastic energy dissipation device through a rotating plate. The guiding device comprises a main supporting shaft rod and an auxiliary supporting shaft rod which are connected with the power transmission tower and hinged to the rotating plate through a mounting plate and a lug plate. The viscoelastic energy dissipation device comprises a constraint end plate, a constraint steel pipe, a pin shaft, a fan blade type rotating shaft and a viscoelastic energy dissipation rubber rod, and the viscoelastic energy dissipation rubber rod is clamped with a groove of the fan blade type rotating shaft to dissipate energy. The steel pipe torsion yield energy dissipation device comprises an external steel pipe, a stiffening plate and a stiffening steel pipe, and energy is further dissipated through torsion yield. Through displacement amplification and multiple energy consumption mechanisms, the power transmission line is effectively protected from being affected by vibration, and the safety and stability of the power transmission line are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a displacement amplifying damper applied to a power transmission line. Background Art

[0002] A damper is a structural vibration control device. It absorbs and dissipates the vibration energy caused by external dynamic loads by utilizing the dissipation mechanism of mechanical energy when the structure vibrates, such as metal yielding, friction, and fluid damping, thereby reducing structural stress and the degree of structural vibration. However, for small deformation structures such as transmission lines, traditional dampers have limitations in energy dissipation efficiency and vibration reduction requirements, and cannot adapt to the challenges faced by transmission lines as an important component that bears dynamic loads under icing disasters. Compared with traditional dampers, displacement amplification dampers can amplify small input displacements into large outputs through the displacement amplification of mechanical structures, thereby significantly improving damping efficiency. In particular, dampers using levers or gears have the most obvious displacement amplification effect, which can effectively expand the damping range and better meet the high demand for vibration reduction of transmission tower-line systems under severe winter icing conditions. At the same time, this type of new damper also retains the reliable advantages of traditional dampers. Through the test with the physical model, it can be seen that its vibration reduction effect is significantly better than that of simple traditional dampers, and it is more conducive to improving the safety performance of ice-covered transmission tower lines under dynamic loads. The effective displacement amplification damping technology provides high-quality vibration reduction protection for severely iced transmission lines and improves the wind and ice resistance of the entire line network.

[0003] The gear mechanism displacement amplification damper uses drive gears and transmission gears of different sizes. When the drive gear rotates one circle, the transmission gear only rotates a smaller angle, thereby realizing displacement amplification. The drive gear and the transmission gear are connected together by elastic connectors such as springs, so that when the drive gear rotates, a pulling force is generated to drive the transmission gear to rotate synchronously. A damping member, such as an energy absorption mechanism or a viscous liquid damper, is installed at the end of the transmission gear. When the transmission gear is driven by the drive gear to amplify the displacement, the damping member will generate a damping force to offset the inertial force and reduce the vibration amplitude. By adjusting the ratio of the drive gear and the transmission gear, the stiffness of the connecting spring and the damping coefficient of the damping member, good damping control of inertial forces of different frequencies and amplitudes can be achieved. It utilizes the deceleration effect of gear transmission to achieve displacement amplification, and at the same time, the amplified displacement signal is damped by the damping device, thereby effectively eliminating the inertial force.

[0004] The displacement amplification damper of the linkage mechanism realizes displacement amplification through a series of linkage linkages. The drive rod reciprocates and drives the second link through the first link. Due to the different guide rod lengths of each link, the second link will move more than the first, thereby realizing displacement amplification. 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 amplifies its reciprocating motion, the damping device will generate a damping force to offset its inertia force. The amplification ratio can be controlled by adjusting the ratio of the lengths of each link, and the damping coefficient of the damping device can also be adjusted to optimize the damping effect. When the outside world applies force to the drive rod, such as vibration force, it will be transmitted to the second link. However, since its motion amplitude is amplified, the damping force generated by the damping device is also increased, thereby more effectively eliminating the original force.

[0005] The only amplifying damper of the lever mechanism is to use a lever with a fulcrum as the support point. One end of the lever is used as the input end, and a driving device is installed. The driving device reciprocates, and the other end of the lever is used as the output end, which has a displacement amplification effect relative to the input end. This is due to the use of the lever principle, and the distance between the output end and the fulcrum is greater than the distance between the input end and the fulcrum. A damper, such as a viscous liquid damper, is installed at the output end. With the reciprocating motion of the output end lever end, the damper will generate a damping force in the same direction. When the outside world applies a vibration force to the input end, the output end movement amplitude increases due to the displacement amplification effect of the lever. The damping force generated by the damper is also increased accordingly. By optimizing the design of the lever arm length ratio and adjusting the damping coefficient of the damper, the amplified vibration signal can be well offset, and a good vibration reduction effect can be achieved.

[0006] The bridge mechanism displacement amplification damper adopts a bridge linkage mechanism, which is composed of two relatively moving linkages. One linkage is fixed on the bridge frame as a base, and the other linkage is used as a movable linkage. One end of the movable linkage is used as an input to receive the vibration displacement input, and the other end is connected to the base linkage through a supporting slider. The supporting slider can move smoothly on the base linkage to achieve the only movement of the movable linkage relative to the base linkage. The output end of the movable linkage has an amplification effect relative to the input end. This is because the supporting slider fixes the motion trajectory of the output end. The output end is equipped with a damping device such as a viscous damper. As the output end amplifies the movement, the damper generates a damping reaction force. By optimizing the structural ratio, the required amplification ratio can be achieved. Reasonable damper selection can provide damping for different frequencies. When the input end is subjected to force, the output end drives the damper after amplification, and the damper absorbs the amplified energy, which has a good vibration reduction effect.

[0007] However, the existing amplified damper has a single energy dissipation mechanism and still cannot meet the high energy consumption requirements of iced transmission tower-line systems, and cannot be applied to various types of structural energy dissipation requirements. Therefore, the development of a damper with a composite energy dissipation mechanism and a displacement amplification function that can be applied to structural vibration reduction requirements will be of great significance to the reliability of the transmission tower-line system under ice disasters. Summary of the invention

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

[0009] The technical solution of the present invention is: A displacement amplification damper applied to a power transmission line comprises: a guide device, a viscoelastic energy dissipation device, a steel pipe torsional yield energy dissipation device and a rotating plate, wherein 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 a plurality of rotating plates; the guide device comprises: a main support shaft and a secondary support shaft, and mounting plates are sleeved and fixed on the main support shaft and the secondary support shaft, one end of the main support shaft is slidably sleeved with one end of the secondary support shaft, and the other ends of the main support shaft and the secondary support shaft are respectively connected to the tower head crossarms or tower body layers of two adjacent layers of the transmission tower, and a plurality of ear plates are arranged on the mounting plate; the viscoelastic energy dissipation device comprises: a constraint end plate, a constraint steel pipe, a pin shaft, a fan blade type rotating shaft and a viscoelastic energy dissipation rubber rod, and the inner side of the constraint end plate is connected to one side of the constraint steel pipe and the fan blade type rotating shaft, The constraint steel tube is sleeved on the fan-blade type rotating shaft, and a plurality of viscoelastic energy-absorbing rubber rods are arranged on the inner side of the constraint steel tube, and the viscoelastic energy-absorbing rubber rods are engaged with the grooves between the blades of the fan-blade type rotating shaft, and the other side of the constraint steel tube and the fan-blade type rotating shaft is connected to the side surface of one end of the rotating plate, and the other end of the rotating plate is hinged to the ear plate through another pin shaft, and a constraint end plate, two constraint steel tubes and two fan-blade type rotating shafts are arranged on the front and rear sides of the rotating plate respectively, and the pin shaft passes through the constraint end plates, the constraint steel tube and the fan-blade type rotating shaft on the front and rear sides of the rotating plate in turn and is connected to the outer side of the constraint end plate; the steel tube torsional yield energy-absorbing device comprises: an external steel tube, a stiffening plate and a stiffening steel tube, the stiffening steel tube is sleeved on the constraint steel tube, and the stiffening steel tube is connected to the external steel tube through a plurality of stiffening plates, one side of the external steel tube is connected to the rotating plate, and the other side is connected to the constraint end plate.

[0010] Furthermore, the main support shaft and the auxiliary support shaft are both hollow square tube structures.

[0011] Furthermore, the angle between the secondary support shaft and the rotating plate is less than 45°, and the angle between the main support shaft and the rotating plate is less than 45°.

[0012] 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.

[0013] Furthermore, the stiffening plate is a rectangular plate, one end of the stiffening plate is fixedly connected to the outer side of the stiffening steel pipe, and the other end of the stiffening plate is fixedly connected to the inner side of the external steel pipe.

[0014] Furthermore, the pin shaft is a cylindrical pin, and a circular fixing plate is provided at the end of the pin shaft.

[0015] Furthermore, the viscoelastic energy dissipation rubber rod is made of high damping rubber material.

[0016] 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 stiffening steel pipe.

[0017] A method for using a displacement amplification damper applied to a power transmission line comprises 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 that there are no potential safety hazards at the installation site and clear away debris; installers must wear personal protective equipment, including helmets, gloves, and protective shoes; if working at height, wear a safety rope and make sure its fixing point is firm; Step 2: installing the guide device, including the following steps: Step 2.1, connect the main support shaft: align one end of the main support shaft with the predetermined installation position of the tower head cross arm or tower body layer, use bolts to pass through the connection holes of the main support shaft to 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 false tightening; Step 2.2, sleeve the secondary support shaft: Slide one end of the secondary support shaft onto the other end of the main support shaft, and check whether the sleeve joint slides smoothly. If it does not slide smoothly, apply a small amount of lubricating oil; Step 2.3, fix the secondary support shaft rod: align the other end of the secondary support shaft rod with the adjacent tower head cross arm or tower body layer, use bolts to fix it firmly, and repeat the tightening inspection steps; Step 2.4, install the mounting plate and the ear plate: respectively sleeve the two mounting plates onto the main support shaft and the secondary support shaft, fix the mounting plates with bolts, and make the ear plate face the same direction as the rotating plate connection direction; Step 3: installing the viscoelastic energy dissipation device, including the following steps: Step 3.1, connect the fan-shaped shaft and 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, and manually rotate the fan-shaped shaft to confirm that it rotates flexibly without any obstruction; Step 3.2, sleeve the constraint steel tube and the viscoelastic energy dissipation rubber rod: sleeve the constraint steel tube onto the fan-blade-shaped shaft, and ensure that the viscoelastic energy dissipation rubber rod inside the constraint steel tube is fully engaged with the fan-blade groove of the fan-blade-shaped shaft; Step 3.3, connecting the rotating plate: connect the other side of the restraining steel pipe and the fan-shaped rotating shaft to the side surface of one end of the rotating plate; Step 3.4, arrange the front-to-back symmetrical structure: install a restraining end plate, two restraining steel pipes and two fan-shaped rotating shafts on the front and rear sides of the rotating plate respectively to ensure the front-to-back symmetry and the consistent position of the components to avoid skew; Step 3.5, fix the pin: pass the pin through the constraint end plate, constraint steel pipe, and fan-shaped shaft on the front side of the rotating plate in sequence, and then pass through the corresponding parts on the rear side, and fix the end of the pin to the outer side of the constraint end plate; Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps: Step 4.1, sleeve the stiffening steel pipe: sleeve the stiffening steel pipe on the outside of the restraining steel pipe; Step 4.2, connect the stiffening plates: use several stiffening plates to connect the stiffening steel pipe and the external steel pipe, one end of the stiffening plate is welded to the stiffening steel pipe, and the other end is fixed to the external steel pipe; 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 constraining end plate; Step 5: Connect the rotating plate, including the following steps: 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 the pin to pass through the connecting holes of the rotating plate and the ear plate, hinge, and fix both ends of the pin to prevent it from falling off; Step 5.2, check the rotation flexibility: manually push the rotating plate to confirm that it rotates smoothly without jamming, and check whether the pin is loose; Step 6, debugging and inspection, including 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 and the auxiliary support shaft, the rotation of the rotating plate, and the rotation of the fan-shaped shaft are normal; Step 6.2, check the connection points: Use a wrench to check the bolts, pins and other connection points one by one to ensure that they are not loose; Step 6.3, verify the energy-absorbing components: check whether the viscoelastic energy-absorbing rubber rod is in close contact with the fan-shaped shaft and does not fall off.

[0018] Beneficial effects of the present invention: 1. Combination of displacement amplification and efficient energy dissipation: The present invention can achieve displacement amplification through the cooperation of the main support shaft and the auxiliary support shaft and the hinged design of the rotating plate, so that the structure can trigger the energy dissipation mechanism even when the displacement is small; the viscoelastic energy dissipation device (the fan-shaped rotating shaft and the viscoelastic energy dissipation rubber rod cooperate) and the steel pipe torsional yield energy dissipation device (composed of external steel pipe, stiffening steel pipe and stiffening plate) work together to form multi-level and multi-stage energy dissipation, so that the device can effectively exert the energy dissipation effect under the dynamic effects of wind vibration, earthquake and other dynamics of different intensities; 2. Multi-level energy dissipation improves vibration reduction efficiency: The viscoelastic rubber rod of the present invention can provide certain damping under small and medium displacement conditions to absorb high-frequency, low-energy vibrations; the torsional yielding of the steel pipe produces plastic deformation and further energy dissipation under medium and large displacement conditions, and can withstand higher energy impacts or vibrations; the dual energy dissipation pathways are superimposed, so that the device can significantly reduce the structural response under various vibration levels, ensuring the safety and stability of the transmission line; 3. Flexible structural design, convenient installation and maintenance: The main support shaft and the auxiliary support shaft of the present invention are hollow square tube structures, which are light in weight and high in overall rigidity, and are easy to carry and install on the transmission tower; the auxiliary support shaft and the main support shaft are connected by sliding sleeves, which is convenient for fine-tuning or telescoping according to the actual distance on site; by arranging ear plates on the mounting plate and using pins to realize the hinged connection of the rotating plate, a large movable and adaptable range can be provided for the device while ensuring a firm connection, which is convenient for later inspection and maintenance; 4. Symmetrical arrangement at the front and back, stable mechanical properties: The viscoelastic energy dissipation device (including the constrained steel pipe, the fan-shaped rotating shaft, and the viscoelastic energy dissipation rubber rod) of the present invention is symmetrically arranged at the front and back sides of the rotating plate, which not only balances the mechanical environment at both sides of the device, avoids eccentricity or excessive local stress, but also simplifies the stress of the overall structure; this symmetrical design can ensure that the components are evenly stressed when the force is large, and reduce fatigue damage at the connection parts; 5. Combined energy-absorbing components have high reliability and long service life: viscoelastic materials can reduce fatigue accumulation by absorbing small vibration energy and provide continuous vibration reduction protection for the structure; the 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-absorbing components makes the stress level of a single component relatively dispersed, extending the overall service life; 6. Wide adaptability and safety: The present invention can meet the installation requirements of different layers of the transmission tower (tower head cross arm, tower body layer), and the installation angle is flexible (the angle between the main support shaft and the rotating plate, or the secondary support shaft and the rotating plate can be less than 45°), which provides the possibility of transformation 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 key parts need to be spliced ​​and bolted on site, which greatly reduces the construction difficulty and risk; 7. Significant vibration reduction effect, improving the safe operation of power transmission lines: Under the action of wind vibration, micro-seismic 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 the power transmission line in long-term operation, and reduce the frequency of line maintenance and overall operating costs; In summary, the displacement amplification damper applied to power transmission lines of the present invention realizes efficient vibration energy absorption and structural protection through the organic combination of a main supporting shaft, a secondary supporting shaft, a rotating plate, and various energy dissipation means such as viscoelasticity and torsional yield of steel pipes. While meeting the adaptability of various on-site working conditions, it is easy to install and maintain, and has good practical value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 The present invention is a schematic structural diagram of a displacement amplifying damper applied to a power transmission line.

[0021] Figure 2 The present invention is a schematic structural diagram of a fan-blade type rotating shaft of a displacement amplifying damper applied to a power transmission line.

[0022] Figure 3 The present invention is a structural schematic diagram of a constrained steel pipe of a displacement amplifying damper applied to a power transmission line.

[0023] Figure 4 The present invention is a schematic structural diagram of a main support shaft of a displacement amplifying damper applied to a power transmission line.

[0024] Figure 5 The present invention is a schematic structural diagram of a secondary support shaft rod of a displacement amplifying damper applied to a power transmission line.

[0025] Figure 6 The present invention is a structural schematic diagram of a stiffened steel pipe of a displacement amplifying damper applied to a power transmission line.

[0026] Figure 7 The present invention is a schematic structural diagram of a pin shaft of a displacement amplifying damper applied to a power transmission line.

[0027] Figure 8 The present invention is a schematic structural diagram of a constrained end plate of a displacement amplifying damper applied to a power transmission line.

[0028] Fig. 9 The present invention is a schematic structural diagram of a rotating plate of a displacement amplifying damper applied to a power transmission line.

[0029] Fig.10 The present invention is a structural schematic diagram of a viscoelastic energy-absorbing rubber rod of a displacement amplifying damper applied to a power transmission line.

[0030] In the figure: 1-constraint end plate, 2-constraint steel pipe, 3-pin shaft, 4-ear plate, 5-fan-blade type shaft, 6-auxiliary support shaft, 7-rotating plate, 8-main support shaft, 9-mounting plate, 10-viscoelastic energy dissipation rubber rod, 11-external steel pipe, 12-stiffening plate, 13-stiffening steel pipe. DETAILED DESCRIPTION

[0031] The technical scheme of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1-10As shown, a displacement amplification damper applied to a power transmission line comprises: a guide device, a viscoelastic energy dissipation device, a steel tube torsional yield energy dissipation device and a rotating plate 7, wherein the guide device is connected to the steel tube torsional yield energy dissipation device, and the steel tube torsional yield energy dissipation device is connected to the viscoelastic energy dissipation device through a plurality of rotating plates 7; the guide device comprises: a main support shaft 8 and a secondary support shaft 6, wherein the main support shaft 8 and the secondary support shaft 6 are both sleeved and fixed with a mounting plate 9, and the main support shaft One end of the main support shaft 8 is slidably sleeved with one end of the auxiliary support shaft 6, and the other ends of the main support shaft 8 and the auxiliary support shaft 6 are respectively connected to the tower head crossarms or the tower body layers of the two adjacent layers of the transmission tower. A plurality of ear plates 4 are arranged on the mounting plate 9; the viscoelastic energy dissipation device comprises: a constraint end plate 1, a constraint steel pipe 2, a pin shaft 3, a fan-blade type shaft 5 and a viscoelastic energy dissipation rubber rod 10, the inner side of the constraint end plate 1 is connected to the constraint steel pipe 2 and one side of the fan-blade type shaft 5, and the constraint steel pipe 2 is sleeved on On the fan-blade type shaft 5, a plurality of viscoelastic energy-absorbing rubber rods 10 are arranged inside the constraint steel tube 2, and the viscoelastic energy-absorbing rubber rods 10 are engaged with the grooves between the blades of the fan-blade type shaft 5. The other side of the constraint steel tube 2 and the fan-blade type shaft 5 is connected to the side surface of one end of the rotating plate 7. The other end of the rotating plate 7 is hinged to the ear plate 4 through another pin shaft 3. A constraint end plate 1, two constraint steel tubes 2 and two fan-blade type shafts 5 are arranged on the front and rear sides of the rotating plate 7, respectively. The pin shaft 3 passes through the constraint end plate 1, the constraint steel pipe 2, and the fan-shaped rotating shaft 5 on the front and rear sides of the rotating plate 7 in sequence and is connected to the outer side of the constraint end plate 1; the steel pipe torsional yield energy dissipation device includes: an external 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 external steel pipe 11 through a plurality of stiffening plates 12, one side of the external steel pipe 11 is connected to the rotating plate 7, and the other side is connected to the constraint end plate 1.

[0034] Preferably, the main support shaft 8 and the auxiliary support shaft 6 are both hollow square tube structures.

[0035] Preferably, the angle between the secondary support shaft 6 and the rotating plate 7 is less than 45°, and the angle between the main support shaft 8 and the rotating plate 7 is less than 45°.

[0036] 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 .

[0037] Preferably, 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 of the stiffening plate 12 is fixedly connected to the inside of the external steel pipe 11 .

[0038] Preferably, the pin shaft 3 is a cylindrical pin, and a circular fixing plate is provided at the end of the pin shaft 3.

[0039] Preferably, the viscoelastic energy dissipation rubber rod 10 is made of high damping rubber material.

[0040] 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 stiffening steel pipe 13 .

[0041] A method for using a displacement amplification damper applied to a power transmission line comprises 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 that there are no potential safety hazards at the installation site and clear away debris; installers must wear personal protective equipment, including helmets, gloves, and protective shoes; if working at height, wear a safety rope and make sure its fixing point is firm; Step 2: installing 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 tower head cross arm or tower body layer, use bolts to pass through the connection holes of the main support shaft 8 to 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 false tightening; Step 2.2, sleeve the secondary support shaft: Slide one end of the secondary support shaft 6 onto the other end of the main support shaft 8, and check whether the sleeve joint slides smoothly. If it does not slide smoothly, apply a small amount of lubricating oil; Step 2.3, fix the secondary support shaft rod: align the other end of the secondary support shaft rod 6 with the adjacent tower head cross arm or tower body layer, use bolts to firmly fix it, and repeat the tightening inspection steps; Step 2.4, install the mounting plate and the ear plate: respectively sleeve the two mounting plates 9 onto the main support shaft 8 and the secondary support shaft 6, and fix the mounting plates 9 with bolts, with the ear plates facing in the same direction as the connection direction of the rotating plate 7; Step 3: installing the viscoelastic energy dissipation device, including the following steps: Step 3.1, connect the fan-blade shaft and the constraint end plate: align one side of the fan-blade shaft 5 with the connection hole of the constraint end plate 1, use a small bolt to initially fix it, and manually rotate the fan-blade shaft 5 to confirm that it rotates flexibly without any obstruction; Step 3.2, sleeve the constraint steel tube and the viscoelastic energy dissipation rubber rod: sleeve the constraint steel tube 2 onto the fan blade-shaped shaft 5, and ensure that the viscoelastic energy dissipation rubber rod 10 on the inner side of the constraint steel tube 2 is completely engaged with the fan blade groove of the fan blade-shaped shaft 5; Step 3.3, connecting the rotating plate: connecting the other side of the restraining steel pipe 2 and the fan-shaped rotating shaft 5 to the side surface of one end of the rotating plate 7; Step 3.4, arrange the front-to-back symmetrical structure: install a constraint end plate 1, two constraint steel pipes 2 and two fan-shaped shafts 5 on the front and rear sides of the rotating plate 7 respectively to ensure the front-to-back symmetry and the consistent position of the components to avoid skew; Step 3.5, fix the pin shaft: pass the pin shaft 3 through the constraint end plate 1, the constraint steel pipe 2, and the fan-shaped shaft 5 on the front side of the rotating plate 7 in sequence, and then pass through the corresponding components on the rear side, and fix the end of the pin shaft 3 to the outer side of the constraint end plate 1; Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps: Step 4.1, sleeve the stiffening steel pipe: sleeve the stiffening steel pipe 13 on the outside of the restraining steel pipe 2; Step 4.2, connecting the stiffening plates: using a plurality of stiffening plates 12 to connect the stiffening steel pipe 13 and the external steel pipe 11, one end of the stiffening plate 12 is welded to the stiffening steel pipe 13, and the other end is fixed to the external steel pipe 11; Step 4.3, fixing the external steel pipe: connecting one side of the external steel pipe 11 to the rotating plate 7, and fixing the other side to the restraining end plate 1; Step 5: Connect the rotating plate, including the following steps: 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, use the pin 3 to pass through the connecting holes of the rotating plate 7 and the ear plate 4, hinge, and fix both ends of the pin 3 to prevent 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, including 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 the bolts and pin 3 connection points one by one to ensure that they are not loose; Step 6.3, verify the energy-absorbing components: check whether the viscoelastic energy-absorbing rubber rod 10 is in close contact with the fan-blade type shaft 5 and whether there is any falling off.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments and various changes can be made thereto within the knowledge scope of those skilled in the art.

Claims

1. A displacement amplification damper for a power transmission line, characterized in that: include: A guide device, a viscoelastic energy dissipation device, a steel pipe torsional yield energy dissipation device and a rotating plate (7), wherein 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 via a plurality of rotating plates (7); the guide device comprises: a main support shaft (8) and a secondary support shaft (6), wherein a mounting plate (9) is sleeved and fixed on the main support shaft (8) and the secondary support shaft (6), wherein one end of the main support shaft (8) is slidably sleeved with one end of the secondary support shaft (6), and the main support shaft ( 8) and the other end of the auxiliary support shaft (6) are respectively connected to the tower head crossarms or tower body layers of two adjacent layers of the transmission tower, and a plurality of ear plates (4) are arranged on the mounting plate (9); the viscoelastic energy dissipation device comprises: a constraint end plate (1), a constraint steel pipe (2), a pin shaft (3), a fan blade type shaft (5) and a viscoelastic energy dissipation rubber rod (10), the inner side of the constraint end plate (1) is connected to the constraint steel pipe (2) and one side of the fan blade type shaft (5), the constraint steel pipe (2) is sleeved on the fan blade type shaft (5), and the inner side of the constraint steel pipe (2) is provided with A plurality of viscoelastic energy-absorbing rubber rods (10) are arranged, the viscoelastic energy-absorbing rubber rods (10) are engaged with the grooves between the blades of the blade-shaped rotating shaft (5), the other side of the restraining steel pipe (2) and the blade-shaped rotating shaft (5) is connected to the side surface of one end of the rotating plate (7), the other end of the rotating plate (7) is hinged to the ear plate (4) through another pin shaft (3), and a restraining end plate (1), two restraining steel pipes (2) and two blade-shaped rotating shafts (5) are arranged on the front and rear sides of the rotating plate (7), respectively, and the pin shaft (3) passes through the rotating plate (7) in sequence. The restraining end plates (1), restraining steel pipes (2), and fan-shaped rotating shafts (5) are connected to the outer sides of the restraining end plates (1) at the front and rear sides of the plate (7); the steel pipe torsional yielding energy dissipation device comprises: an external steel pipe (11), a stiffening plate (12), and a stiffening steel pipe (13); the stiffening steel pipe (13) is sleeved on the restraining steel pipe (2); the stiffening steel pipe (13) is connected to the external steel pipe (11) through a plurality of stiffening plates (12); one side of the external steel pipe (11) is connected to the rotating plate (7), and the other side is connected to the restraining end plate (1).

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

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

5. The 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 of the stiffening plate (12) is fixedly connected to the inside of the external steel pipe (11).

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

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

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

9. A method for using the displacement amplification damper for power transmission lines according to claim 1, characterized in that: The following steps are involved: 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 that there are no potential safety hazards at the installation site and clear away debris; installers must wear personal protective equipment, including helmets, gloves, and protective shoes; if working at height, wear a safety rope and make sure its fixing point is firm; Step 2: installing 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 tower head cross arm or tower body layer, use bolts to pass through the connection holes of the main support shaft (8) to 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 false tightening; Step 2.2, sleeve the secondary support shaft: Slide one end of the secondary support shaft (6) onto the other end of the main support shaft (8), and check whether the sleeve joint slides smoothly. If it does not slide smoothly, apply a small amount of lubricating oil; Step 2.3, fix the secondary support shaft rod: align the other end of the secondary support shaft rod (6) with the adjacent tower head cross arm or tower body layer, use bolts to firmly fix it, and repeat the tightening inspection steps; Step 2.4, install the mounting plate and the ear plate: respectively sleeve the two mounting plates (9) onto the main support shaft (8) and the secondary support shaft (6), and fix the mounting plates (9) with bolts, with the ear plates facing in the same direction as the connection direction of the rotating plate (7); Step 3: installing the viscoelastic energy dissipation device, including the following steps: Step 3.1, connect the fan-blade shaft and the constraint end plate: align one side of the fan-blade shaft (5) with the connection hole of the constraint end plate (1), use a small bolt to initially fix it, and manually rotate the fan-blade shaft (5) to confirm that it rotates flexibly without any obstruction; Step 3.2, sleeve the constraint steel tube and the viscoelastic energy dissipation rubber rod: sleeve the constraint steel tube (2) onto the fan blade-shaped shaft (5), and ensure that the viscoelastic energy dissipation rubber rod (10) on the inner side of the constraint steel tube (2) is completely engaged with the fan blade groove of the fan blade-shaped shaft (5); Step 3.3, connecting the rotating plate: connecting the restraining steel pipe (2) and the other side of the fan-shaped rotating shaft (5) to the side surface of one end of the rotating plate (7); Step 3.4, arranging a front-to-back symmetrical structure: installing a restraining end plate (1), two restraining steel pipes (2) and two fan-shaped rotating shafts (5) on the front and rear sides of the rotating plate (7) respectively, to ensure front-to-back symmetry, consistent position of components and avoid skew; Step 3.5, fix the pin shaft: pass the pin shaft (3) through the constraint end plate (1), the constraint steel pipe (2), and the fan-shaped rotating shaft (5) on the front side of the rotating plate (7) in sequence, and then pass through the corresponding components on the rear side, and fix the end of the pin shaft (3) to the outer side of the constraint end plate (1); Step 4: Install the steel pipe torsional yield energy dissipation device, including the following steps: Step 4.1, sleeve the stiffening steel pipe: sleeve the stiffening steel pipe (13) onto the outside of the restraining steel pipe (2); Step 4.2, connecting the stiffening plates: using a plurality of stiffening plates (12) to connect the stiffening steel pipe (13) and the external steel pipe (11), one end of the stiffening plate (12) is welded to the stiffening steel pipe (13), and the other end is fixed to the external steel pipe (11); Step 4.3, fixing the external steel pipe: connecting one side of the external steel pipe (11) to the rotating plate (7), and fixing the other side to the restraining end plate (1); Step 5: Connect the rotating plate, including the following steps: 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), use the pin (3) to pass through the connecting holes of the rotating plate (7) and the ear plate (4), hinge, and fix the two ends of the pin (3) to prevent it from falling off; Step 5.2, check the rotation flexibility: manually push the rotating plate (7) to confirm that it rotates smoothly without any jamming, and check whether the pin is loose; Step 6, debugging and inspection, including 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 the bolts and pins (3) one by one to ensure that they are not loose; Step 6.3, verify the energy dissipation components: check whether the viscoelastic energy dissipation rubber rod (10) is in close contact with the fan blade type shaft (5) and whether there is any falling off.

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