Intelligent vibration reduction steel pipe crossed diagonal member joint

Abstract

The invention discloses an intelligent vibration reduction steel pipe cross diagonal member node which comprises a diagonal member node located at the intersection point of cross diagonal members on a power transmission tower, a damping device and an intelligent control device are arranged on the diagonal member node, the damping device is connected with one end of a force measuring device, and the other end of the force measuring device is connected with the cross diagonal members connected to the power transmission tower. The damping device is located at the intersection point of the crossed diagonal members on the power transmission tower, has the effect of supporting the tower body in a static state, and can generate damping in the vibration state of the tower body, so that the vibration of the tower body is weakened. The voltage of the damping device is controlled according to the sampling data of the force measuring device, then the magnitude of damping is flexibly adjusted and controlled, good adaptability to vibration of different intensities is achieved, and therefore the stability of the power transmission tower is better kept.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and more specifically, it relates to an intelligent vibration damping steel pipe cross diagonal member joint. Background Art

[0002] In recent years, the construction of China's electric power infrastructure has accelerated significantly. The large-span transmission tower-line system has shown characteristics such as being tall, multi-circuit, large span, thick conductor cross-section, and strong flexibility. This has put forward higher requirements for the structural performance and structural design of the crossing towers. The joints and structures of some structural parts have become more complex, such as the joints of diagonal members. These joints are the key parts to ensure the safety and reliability of the crossing structure and have a greater impact on the overall stability and transmission performance of the structure. Therefore, a safe and reasonable joint design can ensure the overall safety of the structure. Due to the action of wind, the transmission conductors and the tower body are prone to vibration, and problems such as damage to fittings and loosening of joints are likely to occur, leading to a series of accidents. At present, there are many vibration damping measures for transmission lines. For example, installing magnetorheological dampers on phase spacers or sub-spacers of bundled conductors can, to a certain extent, inhibit the galloping of conductors. However, there are few vibration damping designs for transmission towers. Due to vibration problems, the joints and members of many transmission towers are severely worn, posing serious safety hazards. For example, the invention patent with the publication number CN105971366A discloses a high-voltage overhead transmission line erection mechanism based on a power supply construction system. The cross bracing in this utility model, like the conventional technology, only plays a role of support and reinforcement and has no vibration damping function. Summary of the Invention

[0003] In the prior art, the cross bracing structure on the transmission tower does not have a vibration damping function. To overcome this defect, the present invention provides an intelligent vibration damping steel pipe cross diagonal member joint, which can generate damping to achieve the effect of reducing the vibration of the transmission tower body, and can intelligently control the damping magnitude according to the vibration intensity.

[0004] The technical solution of the present invention is: an intelligent vibration damping steel pipe cross diagonal member joint, including a diagonal member joint located at the intersection of the cross diagonal members on the transmission tower. A damping device and an intelligent control device are provided on the diagonal member joint. One end of the damping device is connected to one end of a force measuring device, and the other end of the force measuring device is connected to the cross diagonal member connected to the transmission tower. The force measuring device is used to sense the stress change when the transmission tower vibrates and generate a corresponding signal to feedback to the intelligent control device. The intelligent control device controls the magnitude of the current output to the damping device according to the mechanical data of the force measuring device, and then controls the damping magnitude provided by the damping device, so as to offset the influence of the force.

[0005] Preferably, the damping device includes a magnetorheological damper and an elastic member surrounding the magnetorheological damper, and also includes a pair of flange plates. The two ends of the magnetorheological damper and the elastic member are respectively connected to the two flange plates in a one-to-one correspondence. The magnetorheological damper is used to generate damping to counteract the vibration influence and external force impact. The elastic member can maintain the stability of the node under static force, and assist the magnetorheological damper under vibration to enhance the damping effect. The damping device is connected to other devices through the flange plates.

[0006] Preferably, the elastic member is a spring, and the spring is connected near the edge of the flange plate. The connection point of the spring and the flange plate is close to the edge of the flange plate, and the distance from the magnetorheological damper is maximized to reduce mutual interference and is also beneficial to the stability of the mechanical structure.

[0007] Alternatively, the elastic member is a hydraulic buffer, and the hydraulic buffer is connected near the edge of the flange plate.

[0008] Preferably, the force measuring device is a mechanical sensor. The mechanical sensor receives the external input pressure and tension, and converts the mechanical signal into an electrical signal.

[0009] Preferably, the force measuring device includes a force measuring instrument and a force measuring instrument flange plate. The force measuring instrument flange plate is connected to both ends of the force measuring instrument. The force measuring instrument flange plate is used to connect to the damping device and the diagonal member, and the force measuring instrument is located on the force transmission path between the damping device and the diagonal member to collect mechanical signals.

[0010] Preferably, the intelligent control device includes a controller and a power supply device. The controller and the power supply device are electrically connected, and the controller is electrically connected to the damping device and the force measuring device. The controller controls the damping of the damping device through a control program, and the power supply device supplies power to the controller.

[0011] Preferably, the controller is a single-chip microcomputer. The sampling-feedback-execution system composed of the damping device, the force measuring device and the intelligent control device on the intelligent vibration damping steel pipe cross diagonal member node is relatively simple, with fewer sampling points and actuators, and a single-chip microcomputer is sufficient for control, which can reduce costs.

[0012] Preferably, the power supply device is a solar panel. The intelligent vibration damping steel pipe cross diagonal member node is installed outdoors with good lighting conditions. Using a solar panel for power supply can make full use of solar energy, reduce power consumption from the power grid, and save energy and protect the environment.

[0013] Preferably, the diagonal member node is in a cross shape and has four connection ends, and the connection ends are connected to the damping device. The cross diagonal members forming the cross support on the transmission tower are usually in a cross shape, and the diagonal member nodes are also made in a cross shape accordingly, so as to match and integrate with the cross diagonal members where the diagonal member nodes are located.

[0014] The beneficial effects of the present invention are: It can reduce the vibration of the transmission tower body. The present invention is located at the intersection of the cross diagonal members of the transmission tower, which has the function of supporting the tower body under static conditions and can generate damping under the vibration state of the tower body, thereby weakening the vibration of the tower body.

[0015] It can intelligently control the damping magnitude and adapt to vibrations of different intensities. The present invention controls the voltage of the damping device according to the sampling data of the force measuring device, and then flexibly adjusts the magnitude of the damping, having good adaptability to vibrations of different intensities, so as to better maintain the stability of the transmission tower. Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a plan schematic diagram of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the damping device in the present invention.

[0019] Figure 4 It is a structural schematic diagram of the force measuring device in the present invention.

[0020] Figure 5 It is a structural schematic diagram of the diagonal member node central body in the present invention.

[0021] Figure 6 It is a structural schematic diagram of the intelligent control device in the present invention.

[0022] Figure 7 It is a schematic diagram of the use state of the present invention on the transmission tower.

[0023] In the figure, 1 - damping device, 11 - magnetorheological damper, 12 - elastic member, 13 - flange; 2 - force measuring device, 21 - force meter, 22 - force meter flange; 3 - intelligent control device, 31 - controller, 32 - power supply device; 4 - diagonal member node central body, 41 - node flange; 5 - cross diagonal member; 6 - transmission tower. Detailed Embodiments

[0024] The following further describes the present invention with reference to the specific embodiments in the drawings.

[0025] Embodiment 1: As Figures 1 to 7As shown in the figure, an intelligent vibration damping steel pipe cross bracing joint is provided on the transmission tower 6. There is a cross bracing 5 between the main load-bearing columns of the tower body of the transmission tower 6. Every four cross bracings 5 form a set of cross bracing components. The four cross bracings 5 in each set of cross bracing components are arranged centripetally in a cross shape. This intelligent vibration damping steel pipe cross bracing joint includes a bracing joint central body 4, a damping device 1, a force measuring device 2, and an intelligent control device 3. The bracing joint central body 4 is connected to each cross bracing component and is located at the intersection of the extension lines of the cross bracings 5. The bracing joint central body 4 is also in a cross shape and has four connection ends. A node flange 41 is provided on the end face of the connection end, and the node flange 41 is integrally formed with the bracing joint central body 4. The damping device 1 includes a magnetorheological damper 11, an elastic member 12, and two flanges 13. The two flanges 13 are divided into a bottom flange and a top flange according to their relative positions with respect to the magnetorheological damper 11. The magnetorheological damper 11 includes a housing, magnetorheological fluid, a coil, a piston, and a piston rod. The piston is slidably connected in the housing. The piston rod is fixed on the piston and extends out of the center of the top of the housing. The magnetorheological fluid reciprocates in the cavities at both ends of the piston, and the coil is installed in the piston. The housing is located at the center of the bottom flange, and the bottom of the housing is welded to the bottom flange. The piston rod is welded to the center of the top flange. There are twelve elastic members 12 and they are evenly spaced around the periphery of the magnetorheological damper 11. The elastic members 12 are located near the edge of the flange 13. The elastic members 12 are arranged in a circle and this circle is coaxial with the flange 13. In this embodiment, the elastic member 12 is a spring. The axes of the elastic members 12 are parallel to the axis of the magnetorheological damper 11. Both ends of the elastic members 12 are connected to the two flanges 13 by bolts. The bracing joint central body 4 is connected to the bottom flange through the node flange 41, so that the damping device 1 is connected to the bracing joint central body 4, corresponding one by one to the connection ends of the bracing joint central body 4.

[0026] The force measuring device 2 is a mechanical sensor, which corresponds to the damping device 1 one by one. The force measuring device 2 includes a force measuring instrument 21 and a force measuring instrument flange 22. There are two force measuring instrument flanges 22, which are respectively welded to the two ends of the force measuring instrument 21 correspondingly. The force measuring instrument 21 is cylindrical and coaxial with the force measuring instrument flange 22. One force measuring instrument flange 22 in each force measuring device 2 is butted with the top flange, and the other force measuring instrument flange 22 is connected to a cross diagonal member 5, so that the force measuring device 2 is connected between the damping device 1 and the cross diagonal member 5, transmits the pressure and tension from the cross diagonal member 5 to the diagonal member node central body 4, detects the force during the transmission of pressure and tension, and converts the mechanical force signal into an electrical signal and then transmits it to the intelligent control device 3. The intelligent control device 3 includes a controller 31 and a power supply device 32 electrically connected to the controller 31. The power supply device 32 is slightly larger than the controller 31 and supplies power for the operation of the force measuring device 2 and the controller 31. The controller 31 is installed on the power supply device 32 by screws. The power supply device 32 is fixed on the cross central area of the diagonal member node central body 4 through fixing columns and matching bolts. The controller 31 is electrically connected to the damping device 1 and the force measuring device 2 through wires. The controller 31 is a single-chip microcomputer, and the controller 31 controls the damping of the damping device 1 through a built-in control program. The power supply device 32 is a solar panel.

[0027] The damping device 1 adjusts the damping force of the damper by changing the current intensity. When the coil in the magnetorheological damper 11 is energized, a magnetic field is generated. The magnetorheological fluid in the magnetorheological damper 11 forms a chain-like structure under the action of the magnetic field, the viscosity increases, the fluidity weakens, and the damping force also increases. The magnetic field strength is positively correlated with the current magnitude. The larger the current, the stronger the magnetic field and the greater the damping force. When the transmission tower 6 is in a static state, the elastic member 12 maintains the node stiffness; when the transmission tower 6 vibrates due to the action of wind, extrusion and pulling actions are also generated between the main load-bearing columns of the transmission tower 6 due to the transient change of the relative position. These acting forces are transmitted to the force measuring device 2 through the cross diagonal member 5. The force measuring device 2 converts the mechanical signal into an electrical signal and transmits it to the controller 31. After being processed by the control program, the controller 31 outputs a control signal to the current output device, and the current output device then outputs current to the coil. If the force is large, the controller 31 will control the magnetorheological damper 11 to increase the system damping, and vice versa to reduce the damping to intelligently adjust the vibration damping effect.

[0028] Embodiment 2: An intelligent vibration-damping steel pipe cross diagonal member joint is provided on a transmission tower 6. There is a cross diagonal member 5 between the main load-bearing columns of the tower body of the transmission tower 6. Every four cross diagonal members 5 form a set of cross bracing components. The four cross diagonal members 5 in each set of cross bracing components are arranged centripetally in a cross shape. This intelligent vibration-damping steel pipe cross diagonal member joint includes a diagonal member joint central body 4, a damping device 1, a force measuring device 2, and an intelligent control device 3. The diagonal member joint central body 4 is connected to each cross bracing component and is located at the intersection of the extension lines of the cross diagonal members 5. The diagonal member joint central body 4 is also in a cross shape and has four connection ends. A node flange 41 is provided on the end face of the connection end, and the node flange 41 is integrally formed with the diagonal member joint central body 4. The damping device 1 includes a magnetorheological damper 11, an elastic member 12, and two flanges 13. The two flanges 13 are divided into a bottom flange and a top flange according to their relative positions with respect to the magnetorheological damper 11. The magnetorheological damper 11 includes a housing, magnetorheological fluid, a coil, a piston, and a piston rod. The piston is slidably connected in the housing. The piston rod is fixed on the piston and extends out of the center of the top of the housing. The magnetorheological fluid reciprocates in the cavity at both ends of the piston, and the coil is installed in the piston. The housing is located at the center of the bottom flange, and the bottom of the housing is welded to the bottom flange. The piston rod is welded to the center of the top flange. There are twelve elastic members 12 and they are evenly spaced around the periphery of the magnetorheological damper 11. The elastic members 12 are located near the edge of the flange 13. The elastic members 12 are arranged in a circle and this circle is coaxial with the flange 13. Different from Embodiment 1, in this embodiment, the elastic member 12 is a hydraulic buffer. The axis of each elastic member 12 is parallel to the axis of the magnetorheological damper 11. Both ends of the elastic member 12 are connected to the two flanges 13 by bolts. The diagonal member joint central body 4 is connected to the bottom flange through the node flange 41, so that the damping device 1 is connected to the diagonal member joint central body 4, corresponding one by one to the connection ends of the diagonal member joint central body 4.

[0029] The force measuring device 2 is a mechanical sensor, which corresponds to the damping device 1 one by one. The force measuring device 2 includes a force measurer 21 and a force measurer flange 22. There are two force measurer flanges 22, which are respectively welded to the two ends of the force measurer 21 correspondingly. The force measurer 21 is cylindrical and coaxial with the force measurer flange 22. One force measurer flange 22 in each force measuring device 2 is butted against the top flange, and the other force measurer flange 22 is connected to a cross diagonal member 5, so that the force measuring device 2 is connected between the damping device 1 and the cross diagonal member 5, transmits the pressure and tension from the cross diagonal member 5 to the diagonal member node central body 4, detects the force during the transmission of the pressure and tension, and converts the mechanical force signal into an electrical signal and then transmits it to the intelligent control device 3. The intelligent control device 3 includes a controller 31 and a power supply device 32 electrically connected to the controller 31. The power supply device 32 is slightly larger than the controller 31 and supplies power for the operation of the force measuring device 2 and the controller 31. The controller 31 is installed on the power supply device 32 by screws. The power supply device 32 is fixed on the cross central area of the diagonal member node central body 4 through fixing columns and matching bolts. The controller 31 is electrically connected to the damping device 1 and the force measuring device 2 through wires. The controller 31 is a single-chip microcomputer, and the controller 31 controls the damping of the damping device 1 through a built-in control program. The power supply device 32 is a solar panel. The rest is the same as in Embodiment 1.

[0030] The damping device 1 adjusts the damping force of the damper by changing the current intensity. When the coil in the magnetorheological damper 11 is energized, a magnetic field is generated. The magnetorheological fluid in the magnetorheological damper 11 forms a chain-like structure under the action of the magnetic field, the viscosity increases, the fluidity weakens, and the damping force also increases accordingly. The magnetic field strength is positively correlated with the current magnitude. The larger the current, the stronger the magnetic field and the greater the damping force. When the transmission tower 6 is in a static state, the elastic member 12 maintains the node stiffness; when the transmission tower 6 vibrates due to the action of wind, extrusion and pulling actions also occur between the main load-bearing columns of the transmission tower 6 due to the transient change of the relative position. These acting forces are transmitted to the force measuring device 2 through the cross diagonal member 5. The force measuring device 2 converts the mechanical signal into an electrical signal and transmits it to the controller 31. After being processed by the control program, the controller 31 outputs a control signal to the current output device, and the current output device then outputs current to the coil. If the force is large, the controller 31 will control the magnetorheological damper 11 to increase the system damping, and vice versa to reduce the damping to intelligently adjust the vibration damping effect.

[0031] Embodiment 3: An intelligent vibration damping steel pipe cross bracing node is provided on a transmission tower 6. There is a cross bracing 5 between the main load-bearing columns of the tower body of the transmission tower 6. Different from Embodiment 1, in this embodiment, every six cross bracings 5 form a set of cross bracing components, and the six cross bracings 5 in each set of cross bracing components are arranged centripetally in a snowflake shape. This intelligent vibration damping steel pipe cross bracing node includes a bracing node central body 4, a damping device 1, a force measuring device 2 and an intelligent control device 3. The bracing node central body 4 is connected to each cross bracing component and is located at the intersection of the extension lines of the cross bracings 5. The bracing node central body 4 also has a hexagonal snowflake shape and has six connection ends. A node flange 41 is provided on the end face of the connection end, and the node flange 41 is integrally formed with the bracing node central body 4. The damping device 1 includes a magnetorheological damper 11, an elastic member 12 and two flanges 13. The two flanges 13 are divided into a bottom flange and a top flange according to their relative positions with respect to the magnetorheological damper 11. The magnetorheological damper 11 includes a housing, magnetorheological fluid, a coil, a piston and a piston rod. The piston is slidably connected in the housing, the piston rod is fixed on the piston and extends out of the center of the top of the housing, and the magnetorheological fluid reciprocally flows in the cavities at both ends of the piston. The coil is installed in the piston. The housing is located at the center of the bottom flange, and the bottom of the housing is welded to the bottom flange, and the piston rod is welded to the center of the top flange. There are twelve elastic members 12 and they are evenly arranged around the periphery of the magnetorheological damper 11. The elastic members 12 are located near the edge of the flange 13. The elastic members 12 are arranged in a circle and this circle is coaxial with the flange 13. Different from Embodiment 1, in this embodiment, the elastic member 12 is a hydraulic buffer. The axes of the respective elastic members 12 are parallel to the axis of the magnetorheological damper 11, and both ends of the elastic member 12 are connected to the two flanges 13 by bolts. The bracing node central body 4 is connected to the bottom flange through the node flange 41, so that the damping device 1 is connected to the bracing node central body 4, corresponding one by one to the connection ends of the bracing node central body 4.

[0032] The force measuring device 2 is a mechanical sensor, corresponding one-to-one with the damping device 1. The force measuring device 2 includes a force measurer 21 and a force measurer flange 22. There are two force measurer flanges 22, which are respectively welded to the two ends of the force measurer 21 correspondingly. The force measurer 21 is cylindrical and coaxial with the force measurer flange 22. One force measurer flange 22 in each force measuring device 2 is butted against the top flange, and the other force measurer flange 22 is connected to a cross diagonal member 5, so that the force measuring device 2 is connected between the damping device 1 and the cross diagonal member 5, transmits the pressure and tension from the cross diagonal member 5 to the diagonal member node central body 4, detects the force during the transmission of the pressure and tension, and converts the mechanical force signal into an electrical signal and then transmits it to the intelligent control device 3. The intelligent control device 3 includes a controller 31 and a power supply device 32 electrically connected to the controller 31. The power supply device 32 is slightly larger than the controller 31 and supplies power for the operation of the force measuring device 2 and the controller 31. The controller 31 is installed on the power supply device 32 by screws. The power supply device 32 is fixed on the cross central area of the diagonal member node central body 4 through fixing columns and matching bolts. The controller 31 is electrically connected to the damping device 1 and the force measuring device 2 through wires. The controller 31 is a single-chip microcomputer, and the controller 31 controls the damping of the damping device 1 through a built-in control program. The power supply device 32 is a solar panel. The rest is the same as that of Embodiment 1.

[0033] The damping device 1 adjusts the damping force of the damper by changing the current intensity. When the coil in the magnetorheological damper 11 is energized, a magnetic field is generated. The magnetorheological fluid in the magnetorheological damper 11 forms a chain-like structure under the action of the magnetic field, the viscosity increases, the fluidity weakens, and the damping force also increases accordingly. The magnetic field intensity is positively correlated with the current magnitude. The larger the current, the stronger the magnetic field, and the greater the damping force. When the transmission tower 6 is in a static state, the elastic member 12 maintains the node stiffness; when the transmission tower 6 vibrates due to the action of wind, there are also extrusion and pulling actions between the main load-bearing columns of the transmission tower 6 due to the transient change of the relative position. These acting forces are transmitted to the force measuring device 2 through the cross diagonal member 5. The force measuring device 2 converts the mechanical signal into an electrical signal and transmits it to the controller 31. The controller 31 processes it through the control program and outputs a control signal to the current output device. The current output device then outputs current to the coil. If the force is large, the controller 31 will control the magnetorheological damper 11 to increase the system damping, and vice versa to reduce the damping to intelligently adjust the vibration damping effect.

[0034] Embodiment 4: An intelligent vibration damping steel pipe cross bracing node is arranged on a transmission tower 6. There is a cross bracing 5 between the main load-bearing columns of the tower body of the transmission tower 6. Every four cross bracings 5 form a set of cross bracing components. The four cross bracings 5 in each set of cross bracing components are arranged centripetally in a cross shape. This intelligent vibration damping steel pipe cross bracing node includes a bracing node central body 4, a damping device 1, a force measuring device 2, and an intelligent control device 3. The bracing node central body 4 is connected to each cross bracing component and is located at the intersection of the extension lines of the cross bracings 5. The bracing node central body 4 is also in a cross shape and has four connection ends. A node flange 41 is provided on the end face of the connection end, and the node flange 41 is integrally formed with the bracing node central body 4. The damping device 1 includes a magnetorheological damper 11, an elastic member 12, and two flanges 13. The two flanges 13 are divided into a bottom flange and a top flange according to their relative positions with respect to the magnetorheological damper 11. The magnetorheological damper 11 includes a housing, magnetorheological fluid, a coil, a piston, and a piston rod. The piston is slidably connected in the housing. The piston rod is fixed on the piston and extends out of the center of the top of the housing. The magnetorheological fluid reciprocates in the cavity at both ends of the piston, and the coil is installed in the piston. The housing is located at the center of the bottom flange, and the bottom of the housing is welded to the bottom flange. The piston rod is welded to the center of the top flange. Different from Embodiment 1, in this embodiment, there are fifteen elastic members 12 and they are evenly arranged around the periphery of the magnetorheological damper 11. The elastic members 12 are located near the edge of the flange 13. The elastic members 12 are arranged in a circle and this circle is coaxial with the flange 13. The elastic member 12 is a spring. The axes of the elastic members 12 are parallel to the axis of the magnetorheological damper 11. Both ends of the elastic member 12 are connected to the two flanges 13 by bolts. The bracing node central body 4 is connected to the bottom flange through the node flange 41, so that the damping device 1 is connected to the bracing node central body 4, corresponding one by one to the connection ends of the bracing node central body 4.

[0035] The force measuring device 2 is a mechanical sensor, which corresponds to the damping device 1 one by one. The force measuring device 2 includes a force measuring instrument 21 and a force measuring instrument flange 22. There are two force measuring instrument flanges 22, which are respectively welded to the two ends of the force measuring instrument 21 correspondingly. The force measuring instrument 21 is cylindrical and coaxial with the force measuring instrument flange 22. One force measuring instrument flange 22 in each force measuring device 2 is butted with the top flange, and the other force measuring instrument flange 22 is connected to a cross diagonal member 5, so that the force measuring device 2 is connected between the damping device 1 and the cross diagonal member 5, transmits the pressure and tension from the cross diagonal member 5 to the diagonal member node central body 4, detects the force during the transmission of pressure and tension, and converts the mechanical force signal into an electrical signal and then transmits it to the intelligent control device 3. The intelligent control device 3 includes a controller 31 and a power supply device 32 electrically connected to the controller 31. The power supply device 32 is slightly larger than the controller 31 and supplies power for the operation of the force measuring device 2 and the controller 31. The controller 31 is installed on the power supply device 32 by screws. The power supply device 32 is fixed on the cross central area of the diagonal member node central body 4 through fixing columns and matching bolts. The controller 31 is electrically connected to the damping device 1 and the force measuring device 2 through wires. The controller 31 is a single-chip microcomputer, and the controller 31 controls the damping of the damping device 1 through a built-in control program. The power supply device 32 is a solar panel. The rest is the same as in Embodiment 1.

[0036] The damping device 1 adjusts the damping force of the damper by changing the current intensity. When the coil in the magnetorheological damper 11 is energized, a magnetic field is generated. After the magnetorheological fluid in the magnetorheological damper 11 is affected by the magnetic field, a chain-like structure is formed, the viscosity increases, the fluidity weakens, and the damping force also increases accordingly. The magnetic field strength is positively correlated with the current magnitude. The larger the current, the stronger the magnetic field, and the greater the damping force. When the transmission tower 6 is in a static state, the elastic member 12 maintains the node stiffness; when the transmission tower 6 vibrates due to the action of wind, the main load-bearing columns of the transmission tower 6 also produce extrusion and pulling effects due to the transient change of the relative position. These acting forces are transmitted to the force measuring device 2 through the cross diagonal member 5. The force measuring device 2 converts the mechanical signal into an electrical signal and transmits it to the controller 31. After being processed by the control program, the controller 31 outputs a control signal to the current output device, and the current output device then outputs current to the coil. If the force is large, the controller 31 will control the magnetorheological damper 11 to increase the system damping, and vice versa to reduce the damping to intelligently adjust the vibration damping effect.

Claims

1. An intelligent vibration-damping steel pipe cross-slope node, characterized in that: The invention comprises an oblique material node central body (4) located at the intersection of crossed oblique materials (5) on a transmission tower, a damping device (1) and an intelligent control device (3) being provided on the oblique material node central body (4), the damping device (1) being connected to one end of a force measuring device (2), and the other end of the force measuring device (2) being connected to the crossed oblique material (5) connected to the transmission tower.

2. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The damping device (1) comprises a magnetorheological damper (11) and an elastic member (12) surrounding the magnetorheological damper (11), and also comprises a pair of flanges (13), wherein two ends of the magnetorheological damper (11) and the elastic member (12) are respectively connected to the two flanges (13) in a one-to-one correspondence.

3. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The elastic member (12) is a spring, and the spring is connected to the flange (13) near the edge.

4. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The elastic member (12) is a hydraulic buffer, which is connected to the flange (13) near the edge.

5. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The force measuring device (2) is a mechanical sensor.

6. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The force measuring device (2) comprises a force measuring device (21) and a force measuring device flange (22), wherein the force measuring device flange (22) is connected to both ends of the force measuring device (21).

7. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The intelligent control device (3) comprises a controller (31) and a power supply device (32); the controller (31) and the power supply device (32) are electrically connected; and the controller (31) is electrically connected to the damping device (1) and the force measuring device (2).

8. The intelligent vibration-damping steel pipe cross-slope node according to claim 1 is characterized in that: The controller (31) is a single chip microcomputer, and the controller (31) controls the damping of the damping device (1) through a control program.

9. The intelligent vibration-damping steel pipe cross-slope node according to claim 8 is characterized in that: The power supply device (32) is a solar panel.

10. The intelligent vibration damping steel pipe cross-slope node according to any one of claims 1 to 9, characterized in that: The oblique material node central body (4) is in a cross shape and has four connection ends, and the connection ends are connected to the damping device (1).

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