Angle steel power transmission tower nondestructive performance improving device based on multi-dimensional self-adaptive vibration control

Abstract

The invention provides an angle steel power transmission tower nondestructive performance improving device based on multi-dimensional self-adaptive vibration control. An L-shaped angle steel clamp and a novel inerter damper are combined for reinforcement. The novel inerter damping device is connected between the two limbs of the L-shaped angle steel clamp through bolts. The novel inerter damping device is composed of an outer shell, an inner shell, a ball sleeve, a lead screw, an electromagnetic inerter damper, a hydraulic inerter damper and a rubber damping buffer system. Reinforcing and lifting can be carried out on the basis that the original tower position of the power transmission tower is not damaged, and the method has the advantages of being high in stability, wide in applicability, convenient to construct and the like.

Description

Technical Field

[0001] The invention relates to the field of transmission tower vibration reduction and reinforcement, and in particular to a lossless performance improvement device for an angle steel transmission tower based on multi-dimensional adaptive vibration control. Background Art

[0002] As an important infrastructure for power transmission, the stability of transmission towers is directly related to the safe operation of the power grid. Among the many threats of natural disasters, extreme disasters, with their suddenness and powerful destructive power, pose a severe challenge to infrastructure, especially transmission towers as key nodes of power transmission. Although various environmental factors were considered at the beginning of the design, their stability and safety still face great challenges when facing extreme natural disasters. For example, when an earthquake occurs, the rapid vibration of the earth's crust and the displacement of the ground will produce a huge impact force on the foundation of the transmission tower, causing a sudden increase in the internal force of the angle steel of the transmission tower. At the same time, the propagation of seismic waves will also cause the resonance effect of the main structure of the transmission tower, causing various parts of the tower to bear additional dynamic loads, which will cause damage to the structural components. When the damage accumulates to a certain extent, the transmission tower may collapse, interrupting power transmission and causing serious impact on the power supply in the surrounding areas.

[0003] As an important component of the transmission tower structure, angle steel plays an important role in supporting the load of the transmission line and ensuring the stability and safety of power transmission. At the same time, the advantages of angle steel being light and high in strength enable the transmission tower to resist external forces such as high-intensity wind pressure, ice load, and earthquake. A large number of transmission towers currently in operation have a long service life, large losses in structural components, and serious declines in stiffness and bearing capacity. They are not applicable to current standards and cannot cope with large external forces. At the same time, it is difficult and costly to maintain or rebuild such transmission towers during use, making it difficult to achieve efficient operation and maintenance. The reinforcement of transmission towers is restricted by many factors. For its reinforcement, drilling, cutting and welding on the original angle steel should be avoided to prevent damage to the original angle steel to ensure the safety of the original structure. At the same time, during the reinforcement of the transmission tower, the transmission tower is in a live working state, so the reinforcement device needs to meet the characteristics of simple installation. At present, various technical measures have been proposed for the reinforcement of transmission towers, such as installing damping devices at key parts of transmission towers, optimizing the cross-sectional form of angle steels of transmission towers, improving the stiffness and strength of the materials themselves, and using high-quality vibration-reducing new materials to make angle steels, etc. However, the research and development and application of the above technologies are still in the stage of continuous improvement and development. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of existing reinforcement technology and provide a lossless performance improvement device for angle steel transmission towers based on multi-dimensional adaptive vibration control, which adopts L-shaped angle steel clamps and novel inertial capacitance damping for combined reinforcement. The present invention can realize reinforcement on the basis of non-damage to the original tower position of the transmission tower, and has the advantages of strong stability, wide applicability and convenient construction.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for improving the lossless performance of an angle steel transmission tower based on multi-dimensional adaptive vibration control, comprising an outer L-shaped angle steel fixture and an inner L-shaped angle steel fixture of the same structure, each comprising a first L-shaped angle steel and a second L-shaped angle steel, the first L-shaped angle steel and the second L-shaped angle steel being arranged up and down, and connected by a vertical inertia damping device, and the flange of the first L-shaped angle steel and the flange of the second L-shaped angle steel are each connected by a horizontal inertia damping device, the vertical inertia damping device and the horizontal inertia damping device each comprising an outer shell and an inner shell, one end of the outer shell being sealed and the other end being open, and both ends of the inner shell being sealed and the first end being inserted The outer shell has an open end; a first spring is arranged between the first end of the inner shell and the first end plate inside the outer shell; a first ball sleeve is arranged at the first end of the inner shell; one end of the lead screw is inserted into the inner shell, and the other end cooperates with the first ball sleeve, and is connected to the third end plate through the spring and the electromagnetic inertia damper; the third end plate and the fourth end plate installed inside the outer shell form a second cavity, the second cavity is filled with hydraulic oil, and a piezoelectric power generation unit is installed on the upper surface of the fourth end plate, and the piezoelectric power generation unit hinders the rotation of the electromagnetic inertia damper; a third cavity is formed between the fourth end plate and the piston plate, and the piston plate is connected to the fourth damping system.

[0007] As a further technical solution, the three outer L-shaped angle steel clamps and the one inner L-shaped angle steel clamp form a set of non-destructive performance improvement devices, and multiple sets of non-destructive performance improvement devices can be set along the length direction of the reinforced angle steel.

[0008] As a further technical solution, three outer L-shaped angle steel clamps are installed on the outer side of the reinforced angle steel, and the inner L-shaped angle steel clamp is installed on the inner side of the reinforced angle steel, and the two adjacent outer L-shaped angle steel clamps and the adjacent outer L-shaped angle steel clamps and the inner L-shaped angle steel clamps are each connected by bolts.

[0009] As a further technical solution, the electromagnetic inertia damper includes a first end plate, a second end plate, a ratchet, and a rotating cylinder; the first end plate and the second end plate are fixed in the outer shell, and a second ball sleeve is installed in the center of the first end plate and the second end plate, and the second ball sleeve is rolled with the lead screw through the second ball sleeve, and the two ends of the rotating cylinder are connected to the second ball sleeve, and the first end plate and the second end plate are filled with viscous liquid, and the outer surface of the rotating cylinder 10-37 is provided with ratchets in positive and negative directions.

[0010] As a further technical solution, an electromagnet and a circular aluminum plate are respectively arranged on the opposite surfaces of the first end plate and the second end plate.

[0011] As a further technical solution, the piezoelectric power generation unit controls the magnetic force of the electromagnet.

[0012] As a further technical solution, the third cavity is filled with compressible gas.

[0013] As a further technical solution, the fourth damping system includes a second spring, a sleeve, a reflux tank, a viscous liquid, a compression spiral buffer tube, a reflux spiral buffer tube, and a liquid storage tank; the upper end of the second spring is fixed to the lower surface of the piston plate, and the lower end is fixed to the upper surface of the reflux tank body; the piston rod of the piston plate is inserted into the sleeve, and the piston rod can slide in a sealed manner on the inner wall of the sleeve; the sleeve is fixed in the reflux tank; the compression spiral buffer tube is sleeved inside the reflux spiral buffer tube; the upper end of the compression spiral buffer tube is connected to the sleeve, and the lower end of the compression spiral buffer tube is connected to the liquid storage tank; the upper end of the reflux spiral buffer tube is connected to the reflux tank, and the lower end is connected to the liquid storage tank;

[0014] As a further technical solution, a plurality of damping nets are arranged inside the compression spiral buffer tube and the reflux spiral buffer tube.

[0015] As a further technical solution, a rubber damping ball is further arranged inside the inner shell, and rubber damping pads are arranged on the inner walls at both ends of the inner shell.

[0016] Specifically, the working principle of the present invention is as follows:

[0017] The device is installed on the angle steel of the transmission tower, and is connected with bolts using an outer L-shaped angle steel clamp and an inner L-shaped angle steel clamp to form a whole with the angle steel. When subjected to external loads, the outer L-shaped angle steel clamp and the inner L-shaped angle steel clamp restrain the angle steel from deforming by binding it. The deformation trend of the angle steel is transmitted to the outer L-shaped angle steel clamp and the inner L-shaped angle steel clamp, and the outer L-shaped angle steel clamp and the inner L-shaped angle steel clamp transmit the deformation trend to the vertical inertia damping device and the horizontal inertia damping device connected to the ear plate.

[0018] The vertical inertia damping device and the horizontal inertia damping device are deformed by compression or tension, wherein the outer shell and the inner shell produce relative axial displacement, and the inner shell squeezes the screw rod. Since the screw rod and the first ball sleeve limit the axial displacement of the inner shell, the axial displacement of part of the screw rod is converted into the screw rod's self-rotation around the axis. At the same time, the relative displacement between the inner shell and the outer shell will cause the spring to generate elastic force, which serves as the first damping system for the device to respond to external effects. At the same time, after the external effect is dissipated, the spring can restore the device to the initial undeformed stage. When the angle steel is deformed to a certain extent, the screw rod rotates, and the electromagnetic inertia damper starts to work through the second ball sleeve of the electromagnetic inertia damper; the electromagnetic damper starts to rotate around the center of the screw rod, and the ratchet on the electromagnetic damper dissipates and absorbs energy under the damping action of the viscous fluid. The electromagnetic damper rotates in the viscous fluid to generate damping as the second damping system for this device to respond to external effects.

[0019] As the deformation of the angle steel continues to increase, the screw rod is further advanced, and the third end plate at the lower end of the screw rod moves relative to the fourth end plate as the screw rod is advanced, and the hydraulic oil pressure in the second chamber changes, thereby causing the piezoelectric power generation unit located on the upper surface of the fourth end plate to generate current. The piezoelectric power generation unit is connected to the pressure sensor, and the power extraction and storage unit, the ordinary switch, the resistor, the electromagnetic relay and the current sensor form a closed loop, which converts the pressure into resistance heating and heat dissipation. At the same time, the circuit uses a hollow inductor, an excitation coil, and an adsorption switch to make the generated current flow through the electromagnets at both ends of the electromagnetic inertia damping device. As the pressure increases, the pressure of the piezoelectric power generation unit increases, and the pressure sensor enhances the working efficiency of the power extraction and storage unit, thereby increasing the current value. When the current reaches a certain threshold, the electromagnetic relay works, closes the adsorption switch, and energizes the excitation coil, and the magnetism of the electromagnet increases. The electromagnet generates magnetic flux lines, which pass through the circular aluminum plates at both ends of the electromagnetic inertia damper. Induction current is generated inside the circular aluminum plates, hindering the rotation of the electromagnetic inertia damper. This device serves as a third damping system that responds to external effects. As the relative displacement between the inner shell and the outer shell increases, the fourth end plate moves downward. The fourth end plate and the piston plate form a fourth cavity. When the gas is compressed to a certain volume, the piston plate moves downward under the action of pressure. Springs are arranged on the lower surface of the piston plate end plate and the upper surface of the outer side of the reflux tank, which are used to further dissipate energy, absorb kinetic energy and restore the device after energy dissipation. One end of the piston rod of the piston plate is inserted into the sleeve. The relative displacement generated by the piston plate will squeeze or expand the viscous liquid in the hydraulic inertial damper, so that the viscous liquid passes through the reflux tank, the compression spiral buffer tube, the reflux spiral buffer tube, and the liquid storage tank. The reflux tank, the compression spiral buffer tube, the reflux spiral buffer tube, and the liquid storage tank are provided with a damping net. When the viscous liquid flows through the damping net, the damping net exerts a damping effect on the viscous liquid. The hydraulic inertial damper serves as the fourth-stage damping system of the new inertial damping device. When the external force is large or the deformation of the transmission tower angle steel is serious, the relative displacement between the inner shell and the outer shell reaches the design limit value, and the rubber damping ball at the upper end of the screw rod will be deformed by friction under the action of the rubber damping pads at the upper and lower ends of the inner shell, thereby further releasing energy, and at the same time decelerating the relative displacement between the inner shell and the outer shell and the self-rotation of the screw rod, which is used as the fifth stage damping system of the new inertial capacitance damping device. Under the action of the clamp, the transmission tower angle steel transmits all external forces to the longitudinal and horizontal inertial capacitance damping devices for energy dissipation, thereby reinforcing the transmission tower angle steel, improving the bearing capacity of the angle steel, and preventing its damage.

[0020] Beneficial effects of the present invention:

[0021] The present invention is a non-destructive performance improvement device for angle steel transmission towers based on multi-dimensional adaptive vibration control, which ensures the stiffness and strength of the angle steel of the transmission tower under external action and improves its stability. It improves the bearing capacity of the angle steel from multiple dimensions and changes the singleness and limitations of the traditional transmission tower reinforcement method.

[0022] The invention adopts a method of reinforcing angle steel by connecting multiple L-shaped angle steel clamps by bolts. The invention is flexible to assemble and can effectively install the device on the reinforced angle steel. The installation method avoids the problem of weakening the angle steel caused by drilling or welding on the reinforced angle steel.

[0023] The reinforcement method of the present invention is efficient and fast, the reinforcement parts are easy to install and lightweight, no large lifting equipment or special installation tools are required, and it is suitable for the reinforcement of transmission tower angle steels under various environmental conditions. The present invention can process products in factories according to the reinforcement requirements of the reinforcement angle steels, and there are many types of universal accessories between different types of reinforcement parts, without the need to design and adapt the reinforcement parts for each component separately. The factory produces and transports, and the assembled installation is carried out on site, which is efficient and fast, reduces the working time in the exposed environment, and is conducive to emergency disposal.

[0024] The vertical inertia damping device and the horizontal inertia damping device used in the present invention are different from the traditional piston damper. They have stronger ability to adjust vibration characteristics, have the characteristics of inertia amplification, and can more effectively reduce the vibration response of the structure. The present invention has a relatively small mass, is convenient for construction and installation, and reduces the space occupied by the building.

[0025] The vertical inertia damping device and the horizontal inertia damping device designed by the present invention can make graded responses according to the size of the external action and the degree of deformation of the angle steel of the transmission tower. For different degrees of damage, the present invention is set as a five-stage damping system. The first stage damping system is spring tension or compression damping; the second stage damping system is the rotation damping of the ratchet on the electromagnetic inertia damper around the axis of the screw in the viscous fluid; the third stage damping system is the damping force that hinders relative motion generated by the magnetic flux lines generated by the excitation coil of the circular aluminum plate cutting piezoelectric generating unit of the electromagnetic inertia damper under the action of increased pressure; the fourth stage is that the piston plate squeezes or expands the viscous fluid to make it flow in the reflux tank, the compression spiral buffer tube, the reflux spiral buffer tube, and the liquid storage tank. When the viscous fluid flows through the damping net and the spiral, the kinetic energy is dissipated to produce a damping effect; the fifth stage damping is the energy dissipation effect generated by the friction, extrusion and deformation of the rubber damping pad at the end of the inner shell of the rubber damping ball at the upper end of the screw.

[0026] The present invention adopts a vertical inertia damping device and a horizontal inertia damping device. The damping device is provided with a spring, and its function is to restore the device after energy dissipation is completed and external action is applied. No human intervention is required, and it has strong adaptability and low maintenance cost.

[0027] The present invention adopts piezoelectric energy capture technology to convert mechanical energy into electrical energy and store it in an electrical energy extraction and storage unit, and uses the electrical energy in electromagnetic damping to achieve energy self-sufficiency, making the device green and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0029] Figure 1 It is a three-dimensional schematic diagram of the overall structure of Example 1 of the present invention;

[0030] Figure 2 is a schematic top view of the overall structure of Embodiment 1 of the present invention;

[0031] Figure 3 1 is a schematic structural diagram of a vertical inertia damping device according to Embodiment 1 of the present invention;

[0032] Figure 4 is a three-dimensional schematic diagram of the structure of the electromagnetic inertia damper according to Embodiment 1 of the present invention;

[0033] Figure 5 This is a schematic diagram of the battery power supply principle of Embodiment 1 of the present invention;

[0034] In the figure: 1 reinforced angle steel, 2 inner L-shaped angle steel clamp, 3 reserved bolt hole, 4 outer L-shaped angle steel clamp, 5 horizontal ear plate, 6 horizontal damper fixing bolt, 7 horizontal inertia damping device, 8 vertical ear plate, 9 vertical damper fixing bolt, 10 vertical inertia damping device, 10-1 outer shell, 10-2 inner shell, 10-3 upper rubber damping pad, 10-4 rubber damping ball, 10-5 lower rubber damping pad, 10-6 screw rod, 10-7 first ball sleeve, 10-8 spring, 10-9 first end plate, 10-10 electromagnet, 10-11 second ball sleeve, 10-12 electromagnetic inertia damper, 10-13 ratchet, 10-14 viscous liquid, 10-15 circular aluminum plate, 10-16 third end plate, 10-17 compression oil, 10-18 fourth end plate, 10-19 cavity, 10-20 piston plate, 10-21 spring, 10-22 sleeve, 10-23 reflux tank, 10-24 viscous liquid, 10-25 compression spiral buffer tube, 10-26 reflux spiral buffer tube, 10-27 damping net, 10-28 liquid storage tank, 10-29 adsorption switch, 10-30 hollow inductor, 10-31 excitation coil, 10-32 relay protection, 10-33 current sensor, 10-34 switch, 10-35 electromagnetic relay; 10-36 second end plate, 10-37 rotating cylinder. DETAILED DESCRIPTION

[0035] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, groups and / or combinations thereof;

[0037] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] Terminology explanation section: The terms "install", "connected", "connect", "fixed" and the like in the present invention should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral whole. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] The embodiments of the present invention are described in detail below in conjunction with the technical solutions and the accompanying drawings.

[0040] like Figure 1As shown, this example provides a lossless performance improvement device for angle steel transmission towers based on multi-dimensional adaptive vibration control, including an outer L-shaped angle steel clamp 4 and an inner L-shaped angle steel clamp 2 for clamping and fixing the reinforced angle steel 1; wherein, three outer L-shaped angle steel clamps 4 and one inner L-shaped angle steel clamp 2 form a set of lossless performance improvement devices, and according to the length of the reinforced angle steel 1, multiple sets of lossless performance improvement devices can be set along the length direction of the reinforced angle steel 1; the lossless performance improvement device for angle steel transmission towers ensures the stiffness and strength of the transmission tower angle steel under external action, and improves its stability. The bearing capacity of the angle steel is improved from multiple dimensions, changing the singleness and limitations of the traditional transmission tower reinforcement method; the method of reinforcing the angle steel adopts multiple L-shaped angle steel clamps connected by bolts. This invention is flexible in assembly and can more effectively install the device on the reinforced angle steel. The installation method avoids the problem of weakening the angle steel due to drilling or welding on the reinforced angle steel. The reinforcement method of the present invention is efficient and fast, the reinforcement parts are easy to install and lightweight, no large lifting equipment or special installation tools are required, and it is suitable for the reinforcement of transmission tower angle steels under various environmental conditions. The present invention can process products in factories according to the reinforcement requirements of the reinforcement angle steels, and there are many types of universal accessories between different types of reinforcement parts, without the need to design and adapt the reinforcement parts for each component separately. The factory produces and transports, and the assembled installation is carried out on site, which is efficient and fast, reduces the working time in the exposed environment, and is conducive to emergency disposal.

[0041] The following is an example of a group:

[0042] Three outer L-shaped angle steel clamps 4 are installed outside the designated installation position of the reinforced angle steel 1, and an inner L-shaped angle steel clamp 2 is placed inside the reinforced angle steel 1 at the corresponding position of the outer L-shaped angle steel clamps. Bolt holes 3 are set on the outer L-shaped angle steel clamps 4, and bolt holes 3 are also set on the inner L-shaped angle steel clamps 2; two adjacent outer L-shaped angle steel clamps 4 and adjacent outer L-shaped angle steel clamps 4 and inner L-shaped angle steel clamps 2 are each connected by high-strength bolts, so that they are firmly connected to the reinforced angle steel 1.

[0043] Furthermore, the flange length of the inner L-shaped angle steel clamp 2 is the flange length of the outer L-shaped angle steel clamp 4 minus the wall thickness of the reinforced angle steel 1 .

[0044] Furthermore, the structures of the three outer L-shaped angle steel clamps 4 and the inner L-shaped angle steel clamp 2 are the same; each includes a first L-shaped angle steel and a second L-shaped angle steel; the first L-shaped angle steel and the second L-shaped angle steel are arranged up and down, and are connected by two vertical inertia-capacitance damping devices 10, two pairs of horizontal ear plates 5 are arranged at the flange of the first L-shaped angle steel, and each pair of horizontal ear plates 5 are connected by a horizontal inertia-capacitance damping device 7; two pairs of horizontal ear plates 5 are also arranged at the flange of the second L-shaped angle steel; each pair of horizontal ear plates 5 are also connected by another two horizontal inertia-capacitance damping devices 7; the horizontal inertia-capacitance damping device 7 and the horizontal ear plates 5 are connected by fixing bolts 6.

[0045] As a further technical solution, the horizontal inertia capacity damping devices 7 of the first L-shaped angle steel and the second L-shaped angle steel are vertically aligned, and the two horizontal inertia capacity damping devices 7 on the first L-shaped angle steel are located at the three-point point of the first L-shaped angle steel in the vertical direction; the two horizontal inertia capacity damping devices 7 on the second L-shaped angle steel are located at the three-point point of the second L-shaped angle steel in the vertical direction;

[0046] As a further technical solution, a vertical ear plate 8 is set at the midpoint of the tip of the first L-shaped angle steel and the second L-shaped angle steel, and the vertical inertia damping device 10 is connected to the vertical ear plate 8 using a vertical damper fixing bolt 9, and an L-shaped angle steel clamp is connected to each end of the vertical inertia damping device 10.

[0047] Furthermore, the structures of the vertical inertia damping device 10 and the horizontal inertia damping device 7 are completely the same. The vertical inertia damping device 10 is taken as an example to illustrate the structures of the two devices.

[0048] Further, such as Figure 3 As shown, the vertical inertia damping device 10 is wrapped by an outer shell 10-1 and an inner shell 10-2. The outer shell 10-1 is sealed at the lower end and open at the upper end; the inner shell 10-2 is sealed at both ends, and the lower end is inserted into the open end of the outer shell 10-1; when the reinforced angle steel 1 is subjected to external action, the external action causes the reinforced angle steel 1 to generate internal force, and the excessive internal force reaches the limit load of the reinforced angle steel 1, causing it to have a deformation tendency. The L-shaped angle steel clamp fixed on the reinforced angle steel 1 transmits the longitudinal deformation tendency to the vertical inertia damping device 10, and the outer shell 10-1 and the inner shell 10-2 generate relative axial displacement.

[0049] A first damping system, a second damping system, a third damping system, a fourth damping system and a fifth damping system are arranged inside the outer shell 10-1 and the inner shell 10-2; the five damping systems are described below:

[0050] Furthermore, a spring 10-8 is arranged between the bottom of the inner shell 10-2 and the first end plate 10-9 inside the outer shell 10-1; the inner shell 10-2 compresses or stretches the spring 10-8, and the spring 10-8 deforms to consume and absorb the energy of the external action, serving as the first damping system of the device; when the external action dissipates, the spring 10-8 can react to the inner shell 10-2 to restore the original length of the vertical inertia damping device 10.

[0051] Furthermore, a first ball sleeve 10-7 is provided at the lower end of the inner shell 10-2. As the inner shell 10-2 and the outer shell 10-1 are relatively displaced, the balls of the first ball sleeve 10-7 roll on the screw rod 10-6, thereby driving the screw rod 10-6 to rotate around the center; one end of the screw rod 10-6 is inserted into the inner shell 10-2, and the other end passes through the electromagnetic inertia damper 10-12 and is connected to the third end plate 10-16;

[0052] Further, such as Figure 4 As shown, the electromagnetic inertia damper 10-12 includes a first end plate 10-9, a second end plate 10-36, a ratchet 10-13, and a rotating cylinder 10-37; the first end plate 10-9 and the second end plate 10-36 are fixed in the housing 10-1, and a second ball sleeve is installed in the center of the first end plate 10-9; a second ball sleeve is also installed in the center of the second end plate 10-36, and the second ball sleeve is rolled with the above-mentioned lead screw 10-6, so that the lead screw 10-6 moves downward; the second ball sleeve can amplify the rotation inertia effect of the lead screw 10-6, The rotation of the rotating cylinder 10-37 is magnified, and the rotating cylinder 10-37 is fixedly connected to the second ball sleeve; a first cavity is formed between the first end plate 10-9 and the second end plate 10-36, and a viscous liquid 10-14 is filled in the first cavity. The outer surface of the rotating cylinder 10-37 is provided with ratchets 10-13 in positive and negative directions along the length direction; the ratchets 10-13 rotate under the drive of the rotating cylinder 10-37, and slow down and consume energy under the viscous action of the viscous liquid 10-14, thereby producing a damping effect, and the electromagnetic inertia damper 10-12 constitutes a second damping system.

[0053] Further, the third damping system includes an electromagnet 10-10, a circular aluminum plate 10-15, a piezoelectric power generation unit, hydraulic oil 10-17, a third end plate 10-16, a fourth end plate 10-18, etc.; specifically, the electromagnet 10-10 and the circular aluminum plate 10-15 are respectively arranged on the lower side of the first end plate 10-9 and the upper side of the second end plate 10-36, the screw rod 10-6 is pushed toward the housing 10-1, and the lower end of the screw rod 10-6 is fixed on the third end plate 10-16 which can be sealed and slid along the inner wall of the housing 10-1, the third end plate 10-16 and the lower fourth end plate 10-18 form a second cavity, and the hydraulic oil 10-17 is filled into the second cavity; the piezoelectric power generation unit is installed on the upper surface of the fourth end plate 10-18; the piezoelectric power generation unit controls the magnetic size of the electromagnet 10-10;

[0054] Furthermore, the piezoelectric power generation unit is composed of an adsorption switch 10-29, an air-core inductor 10-30, an excitation coil 10-31, a relay protector 10-32, a current sensor 10-33, a common switch 10-34, an electromagnetic relay 10-35 and a pressure sensor, etc. For details, please refer to the existing piezoelectric power generation unit. The third end plate 10-16 moves downward to squeeze the hydraulic oil 10-17, which will cause the pressure sensor to receive a pressure signal. As the pressure increases, the pressure of the piezoelectric power generation unit increases, and the pressure sensor will enhance the working efficiency of the power extraction and storage unit, thereby increasing the current value. When the current reaches a certain threshold, the electromagnetic relay 10-35 works. , close the adsorption switch 10-29; energize the excitation coil 10-31, and the excitation coil 10-31 is connected to the electromagnet 10-10; the magnetism of the electromagnet 10-10 increases; the magnetic flux lines generated by the electromagnet 10-10 pass through the circular aluminum plates 10-15 at both ends of the electromagnetic inertial damper 10-12, and the circular aluminum plates 10-15 cut the magnetic flux lines to generate induced current, generate electromagnetic damping, and further hinder the rotation of the electromagnetic inertial damper 10-12; that is, the present invention adopts piezoelectric energy capture technology to convert mechanical energy into electrical energy and store it in the electrical energy extraction and storage unit, and uses the electrical energy in electromagnetic damping to achieve energy self-sufficiency, and the device is green and pollution-free.

[0055] Furthermore, a third cavity 10-19 is provided between the fourth end plate 10-18 and the piston plate 10-20, the purpose of which is to grade the damping effect of the device. When the fourth end plate 10-18 slides downward under the action of pressure, the gas in the third cavity 10-19 is gradually compressed. When the external action is large or the deformation of the reinforced angle steel 1 is large, the pressure of the cavity 10-19 is sufficient to push the piston plate 10-20 to move, and the fourth damping system of the present invention will be activated.

[0056] Further, the fourth damping system is a hydraulic inertia damper, which is composed of a piston plate 10-20, a spring 10-21, a sleeve 10-22, a reflux tank 10-23, a viscous liquid 10-24, a compression spiral buffer tube 10-25, a reflux spiral buffer tube 10-26, a damping net 10-27, and a liquid storage tank 10-28; the piston plate 10-20 is restricted by the spring 10-21 during movement, the upper end of the spring 10-21 is fixed to the lower surface of the piston plate, and the lower end is fixed to the upper surface of the reflux tank 10-23 tank body; the spring 10-21 has the function of absorbing dissipated energy and restoring the original structure after the device is deformed; the piston rod of the piston plate 10-20 is inserted into the sleeve 10-22, and the piston rod can be sealed and slid on the inner wall of the sleeve 10-22; the sleeve 10-22 is fixed in the reflux tank 10-23;

[0057] The lower end of the reflux tank is opened, and a compression spiral buffer tube and a reflux spiral buffer tube are respectively arranged from the center to the outside, and a damping net is arranged inside the two buffer tubes. The two buffer tubes are connected to a liquid storage tank with a hole below, and the reflux tank, buffer tube and liquid storage tank are filled with viscous liquid. Specifically, the compression spiral buffer tube 10-25 is sleeved inside the reflux spiral buffer tube 10-26; the upper end of the compression spiral buffer tube 10-25 is connected to the sleeve 10-22, and the lower end of the compression spiral buffer tube 10-25 is connected to the liquid storage tank 10-28; the upper end of the reflux spiral buffer tube 10-26 is connected to the reflux tank 10-23, and the lower end is connected to the liquid storage tank 10-28; a plurality of damping nets 10-27 are arranged inside the tube bodies of the compression spiral buffer tube 10-25 and the reflux spiral buffer tube 10-26, so that the viscous liquid 10-24 can achieve the purpose of deceleration when flowing through the buffer tube;

[0058] When the vertical inertia damping device 10 is pressurized, the piston plate 10-20 piston rod is inserted into the sleeve 10-22, so that the viscous liquid 10-24 is squeezed, and a pressure difference is generated in the hydraulic inertia damper. The viscous liquid 10-24 flows from the compression spiral buffer tube 10-25 through the liquid storage tank 10-28 and the reflux spiral buffer tube 10-26 in sequence, and flows into the reflux tank 10-23;

[0059] When the vertical inertia damping device 10 is pulled, the piston plate 10-20 and the piston rod are sucked outward along the sleeve 10-22, so that the volume of the cavity in the sleeve 10-22 increases, the pressure decreases, and a pressure difference is generated in the hydraulic damper. The viscous liquid 10-24 flows from the reflux tank 10-23 through the reflux spiral buffer tube 10-26 and the liquid storage tank 10-28 in sequence, and flows into the 10-25 compression spiral buffer tube.

[0060] Furthermore, a fifth damping system is also arranged in the inner shell, and the fifth damping system includes a rubber damping ball 10-4, an upper rubber damping pad 10-3 or a lower rubber damping pad 10-5; an upper rubber damping pad 10-3 or a lower rubber damping pad 10-5 is arranged on the inner wall of the end of the inner shell, and the inner shell is filled with a damping ball 10-4; when the external action is large or the reinforced angle steel 1 is severely deformed, the electromagnetic inertial damping device is compressed or stretched to the limit state, and the rubber damping ball 10-4 and the upper rubber damping pad 10-3 or the lower rubber damping pad 10-5 at both ends of the inner shell 10-2 produce friction and extrusion, thereby causing the device to further produce a damping effect, thereby realizing the dissipation and absorption of energy and limiting the device.

[0061] The vertical inertia damping device and the horizontal inertia damping device used in the present invention are different from traditional piston dampers. They have stronger ability to adjust vibration characteristics and have characteristics such as inertia amplification, which can more effectively reduce the vibration response of the structure. The present invention has a relatively small mass, is convenient for construction and installation, and reduces the space occupied by the building. The vertical inertia damping device and the horizontal inertia damping device can make graded responses according to the size of the external action and the degree of deformation of the angle steel of the transmission tower. For different degrees of damage, the present invention is set as a five-stage damping system. The first stage damping system is spring tension or compression damping; the second stage damping system is the rotation damping of the ratchet on the electromagnetic inertia damper around the screw axis in the viscous fluid; the third stage damping system is the damping force that hinders relative motion generated by the magnetic flux lines generated by the excitation coil under the action of increased pressure when the circular aluminum plate cutting piezoelectric generating unit of the electromagnetic inertia damper is cut; the fourth stage is that the piston plate squeezes or expands the viscous fluid to make it flow in the reflux tank, the compression spiral buffer tube, the reflux spiral buffer tube, and the liquid storage tank. When the viscous fluid flows through the damping net and the spiral, the kinetic energy is dissipated to produce a damping effect; the fifth stage damping is the energy dissipation effect produced by the friction, extrusion and deformation of the rubber damping ball at the end of the inner shell of the rubber damping pad. The present invention adopts a vertical inertia damping device and a horizontal inertia damping device. The damping device is provided with a spring, and its function is to restore the device after the energy dissipation is completed and the external action is applied. No manual intervention is required, and it has strong adaptability and low maintenance cost.

[0062] The above implementation scheme of this patent is not intended to limit the scope of protection of the invention, and the implementation scheme of this patent is not limited to this. All other forms of modifications, replacements or changes made to the above structure of this patent based on the above content of this patent, in accordance with the common technical knowledge and customary means in this field, without departing from the above basic technical ideas of this patent, should fall within the scope of protection of this patent.

Claims

1. A lossless performance improvement device for angle steel transmission tower based on multi-dimensional adaptive vibration control, characterized in that: The invention comprises an outer L-shaped angle steel fixture and an inner L-shaped angle steel fixture of the same structure, each comprising a first L-shaped angle steel and a second L-shaped angle steel, wherein the first L-shaped angle steel and the second L-shaped angle steel are arranged up and down, and are connected by a vertical inertia capacity damping device, and the flange of the first L-shaped angle steel and the flange of the second L-shaped angle steel are respectively connected by a horizontal inertia capacity damping device, and the vertical inertia capacity damping device and the horizontal inertia capacity damping device respectively comprise an outer shell and an inner shell, wherein one end of the outer shell is sealed and the other end is open, and both ends of the inner shell are sealed and the first end is inserted into the open end of the outer shell; at the first end of the inner shell and the open end of the inner shell, a vertical inertia capacity damping device is connected to the inner shell; A first spring is arranged between the first end plates inside the outer shell; a first ball sleeve is arranged at the first end of the inner shell; one end of the lead screw is inserted into the inner shell, and the other end cooperates with the first ball sleeve, and is connected to the third end plate through the spring and the electromagnetic inertia damper; the third end plate and the fourth end plate installed inside the outer shell form a second cavity, the second cavity is filled with hydraulic oil, a piezoelectric power generation unit is installed on the upper surface of the fourth end plate, and the piezoelectric power generation unit hinders the rotation of the electromagnetic inertia damper; a third cavity is formed between the fourth end plate and the piston plate, and the piston plate is connected to the fourth damping system.

2. The device for improving the lossless performance of angle steel transmission towers based on multi-dimensional adaptive vibration control according to claim 1 is characterized in that: The three outer L-shaped angle steel clamps and the one inner L-shaped angle steel clamp form a set of non-destructive performance improvement devices, and multiple sets of non-destructive performance improvement devices can be set along the length direction of the reinforced angle steel.

3. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 2, characterized in that: Three outer L-shaped angle steel clamps are installed on the outer side of the reinforced angle steel, and the inner L-shaped angle steel clamp is installed on the inner side of the reinforced angle steel. Two adjacent outer L-shaped angle steel clamps and adjacent outer L-shaped angle steel clamps and inner L-shaped angle steel clamps are connected by bolts.

4. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 2, characterized in that: The electromagnetic inertia damper comprises a first end plate, a second end plate, a ratchet, and a rotating cylinder; the first end plate and the second end plate are fixed in the outer shell, and a second ball sleeve is installed in the center of the first end plate and the second end plate, and the second ball sleeve is rollingly matched with the lead screw through the second ball sleeve, and the two ends of the rotating cylinder are connected to the second ball sleeve, and a viscous liquid is filled between the first end plate and the second end plate, and the outer surface of the rotating cylinder is provided with ratchets in positive and negative directions.

5. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 4, characterized in that: An electromagnet and a circular aluminum plate are respectively arranged on the surfaces opposite to the first end plate and the second end plate.

6. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 5, characterized in that: The piezoelectric power generation unit controls the magnetic force of the electromagnet.

7. The device for improving the non-destructive performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 1, characterized in that: The third cavity is filled with compressible gas.

8. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 1, characterized in that: The fourth damping system includes a second spring, a sleeve, a reflux tank, a viscous liquid, a compression spiral buffer tube, a reflux spiral buffer tube, and a liquid storage tank; the upper end of the second spring is fixed to the lower surface of the piston plate, and the lower end is fixed to the upper surface of the reflux tank body; the piston plate piston rod is inserted into the sleeve, and the piston rod can slide in a sealed manner on the inner wall of the sleeve; the sleeve is fixed in the reflux tank; the compression spiral buffer tube is sleeved inside the reflux spiral buffer tube; the upper end of the compression spiral buffer tube is connected to the sleeve, and the lower end of the compression spiral buffer tube is connected to the liquid storage tank; the upper end of the reflux spiral buffer tube is connected to the reflux tank, and the lower end is connected to the liquid storage tank.

9. The device for improving the lossless performance of angle steel transmission tower based on multi-dimensional adaptive vibration control as claimed in claim 8, characterized in that: A plurality of damping nets are arranged inside the compression spiral buffer tube and the reflux spiral buffer tube.

10. The device for improving the non-destructive performance of angle steel transmission tower based on multi-dimensional adaptive vibration control according to claim 1, characterized in that: A rubber damping ball is also arranged inside the inner shell, and rubber damping pads are arranged on the inner walls at both ends of the inner shell.

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