Intelligent reset displacement amplification type rotary friction damper and method of use thereof

Abstract

The application discloses a kind of intelligent reset displacement amplification type rotary friction damper and its use method, belong to damper technical field;Its technical scheme is: damper includes displacement amplification type friction energy dissipation part and intelligent reset part.The beneficial effects of the present application are: compared with traditional damper, the displacement of building beam column can be amplified by displacement amplification device, the relative displacement between friction material and sector steel plate is increased, and better friction energy dissipation effect is achieved;Kinetic energy is converted into spring potential energy during rotation, providing sufficient reset force for the damper, achieving initial reset, and combining three-point spatial positioning device and active reset motor to intelligently fine-tune the damper after initial reset, achieving accurate reset.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dampers, in particular to an intelligent reset displacement amplification type rotary friction damper and a use method thereof. BACKGROUND

[0002] Under the action of an earthquake, a structure mainly consumes energy through plastic deformation of components, which will cause irreversible damage to the structure components, and is not conducive to the subsequent use of the structure. The installation of a friction damper in the structure can effectively avoid permanent damage to the structure, and the damper has many advantages such as strong energy dissipation capacity, convenient disassembly and assembly, and wide application prospect.

[0003] Most displacement-related dampers have a displacement equal to the relative displacement of the connection point when working. When the relative deformation of the structure is small, the damper is difficult to fully play a role due to small displacement, and the energy dissipation capacity is poor. Moreover, after an earthquake, the traditional friction damper will produce a large displacement and have a large residual deformation, and cannot automatically recover to the initial state after the earthquake, so it needs to be used together with a self-reset device. At present, scholars at home and abroad generally use passive reset devices such as prestressed tendons or shape memory alloys for the study of self-reset devices, but these passive reset devices have some defects: 1. The reset effect of the passive reset device is difficult to guarantee, and the reset accuracy is poor; 2. The passive reset device is easily affected by the environment and cannot fully realize the reset function, such as shape memory alloy which is greatly affected by temperature; 3. The reset function of the passive reset device will be irreversibly lost after multiple work. Therefore, these defects may limit the application of the reset device in actual engineering.

[0004] How to solve the above technical problems is the subject faced by the present application.

[0005] In view of the above problems, the present application can amplify small deformation to achieve more efficient friction energy dissipation under small structural deformation, and can realize accurate reset of the damper through the initial reset of the clockwork and the active reset of the motor after deformation. SUMMARY

[0006] In order to solve the above technical problems, the present application provides an intelligent reset displacement amplification type rotary friction damper and a use method thereof. The damper can make the displacement of the damper greater than the relative displacement of the connection point through the displacement amplification device when working, so as to fully play the energy dissipation capacity. The friction force between the friction material and the sector steel plate can be controlled by adjusting the tension of the tension bolt, so as to realize different damping forces. When the reset degree is difficult to determine, accurate reset can be realized through the three-point spatial positioning device and the active reset motor, thereby solving the problems of the passive reset device, such as difficult to guarantee the reset effect, poor reset accuracy, the passive reset device being easily affected by the environment and being unable to fully realize the reset function, the reset function of the passive reset device being irreversibly lost after multiple work, and the like.

[0007] The application is realized by the following measures, an intelligent reset displacement amplification type rotary friction damper, wherein the damper comprises a displacement amplification friction energy dissipation part and an intelligent reset part;

[0008] The displacement amplification friction energy dissipation part comprises friction material, tension bolt, displacement amplification device; the displacement amplification device comprises sector steel plate and fixed steel plate, the sector steel plate is connected with the fixed steel plate through fixed bolt;

[0009] One side top of the sector steel plate is provided with a sleeve hoop;

[0010] One side of the fixed steel plate is connected with a steel washer through column bolt;

[0011] The intelligent reset part comprises arc-shaped rack, rack bolt, gear bolt, coaxial gear, clockwork gear, clockwork, driving reset motor, three-point space positioning device.

[0012] The sector steel plate is rotationally connected with the fixed bolt, the friction material is fixed in the inner side of the fixed steel plate through welding, the sector steel plate is located in the inner side of the friction material, the friction material and the sector steel plate are in friction contact through the tension bolt, the fixed steel plate, the friction material and the sector steel plate of the displacement amplification friction energy dissipation part are connected into an integral whole by the fixed bolt and the tension bolt, the fixed steel plate, the friction material and the sector steel plate are parallel to each other. The sector steel plate can rotate around the fixed bolt.

[0013] The arc-shaped rack in the intelligent reset part is fixed on the sector steel plate through the rack bolt, the coaxial gear is fixed on the fixed steel plate through the gear bolt, the clockwork gear and the clockwork are connected into an integral whole with the sector steel plate through the fixed bolt; the arc-shaped rack and the clockwork gear are engaged with the coaxial gear;

[0014] The driving reset motor is arranged on the fixed steel plate, the inner side of the fixed steel plate is provided with a motor gear, the motor gear is engaged with the coaxial gear; the three-point space positioning device is respectively located at the two side bottom edges of the fixed steel plate and the bottom of the sleeve hoop.

[0015] The middle part of the fan-shaped steel plate is fixed by a fixing bolt, and the fan-shaped steel plate is provided with a hole groove at the fixing bolt, which can slide back and forth between the friction materials, and the hole groove limits the sliding of the fan-shaped steel plate, and the fan-shaped steel plate is in sliding connection with the fixing bolt. The fan-shaped steel plate can slide back and forth through the hole groove, and the fixing bolt can adjust the tightness, and by adjusting the tightness of the fixing bolt, the friction between the friction material and the fan-shaped steel plate is controlled, so that the damper achieves different damping effects. The upper end of one side of the fan-shaped steel plate is provided with a horizontal flange, the horizontal flange is connected with the sleeve hoop through a sleeve hoop bolt, and then the damper and the beam are connected;

[0016] The fan-shaped steel plate is provided with a bolt hole at the fixing bolt, the horizontal distance between the bolt hole and the hole groove is L1, and the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2. By adjusting the size of the fan-shaped steel plate, that is, the ratio of L1 and L2, the control of displacement amplification multiple is realized. The displacement amplification energy consumption principle is that the fan-shaped steel plate rotates around the fixing bolt, and the amplification device composed of the fan-shaped steel plate, the fixing bolt and the fixed steel plate realizes the rotation displacement amplification at the hole groove, and friction energy consumption with the friction material.

[0017] The inner wall of the clockwork gear is provided with a sliding groove, the fixed steel plate is provided with a clockwork fixing rod, the inner end of the clockwork is connected through the sliding groove on the clockwork gear, and the outer end of the clockwork is connected with the clockwork fixing rod on the fixed steel plate, so as to fix the outer side of the clockwork. Through the rotation of the clockwork gear, the inner end of the clockwork is driven to rotate, and then the kinetic energy of the gear is converted into the elastic potential energy of the clockwork, which provides a reset force after the earthquake. The coaxial gear includes a small gear on the inner side and a large gear on the outer side which are coaxially arranged;

[0018] The inner side small gear of the coaxial gear is in meshing with the arc-shaped rack, and the large and small gears of the coaxial gear have the same angular velocity, while the radii are set to be different, so as to achieve the effect of linear velocity amplification.

[0019] The outer side large gear of the coaxial gear is in meshing with the clockwork gear. The outer side large gear of the coaxial gear has the same linear velocity as the clockwork gear, while the large gear in the coaxial gear is set to have a larger radius than the clockwork gear, so as to amplify the angular velocity of the clockwork gear, so that it rotates at a larger angle, and provides more elastic potential energy for the clockwork, and provides sufficient reset force for the reset of the damper.

[0020] The active reset motor is internally provided with a space coordinate receiver and a motor, and the space coordinate receiver is used for receiving the space coordinates of a three-point space positioning device. After the preliminary reset is realized by the clockwork, the space coordinate receiver obtains the three-point space coordinates after the preliminary reset, and the active reset motor starts to work to fine tune the damper after the preliminary reset, so that the three-point space coordinates return to the initial coordinate position, and the accurate reset is realized.

[0021] The three-point space positioning devices respectively located at the two side bottom edges of the fixed steel plate and the bottom of the sleeve are in the same vertical plane. The three-point space positioning devices are used for measuring space coordinates and can transmit the coordinates, and the resetting degree of the damper after initial resetting is determined in combination with a space coordinate receiver.

[0022] In order to better achieve the above-mentioned purposes, the application further provides a use method of the intelligent resetting displacement amplification type rotary friction damper, which specifically comprises the following steps:

[0023] S1: first, the sleeve is connected with the beam through sleeve bolts, and the fixed steel plate is connected with the column through column bolts and steel shims, so that the damper is connected with the beam and column of the building;

[0024] S2: then, when the beam rotates, the sleeve and the connected sector-shaped steel plate rotate, the rotation center of the sector-shaped steel plate is the center of the bolt hole at the fixed bolt, the sector-shaped steel plate is provided with a hole groove at the loose bolt for sliding back and forth between the friction materials, the horizontal distance between the bolt hole and the hole groove is L1, and the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2; by controlling the size of the sector-shaped steel plate, i.e., L1 is greater than L2, the rotary displacement amplification of the sector-shaped steel plate at the friction materials is realized, and the friction energy dissipation capacity of the damper is improved;

[0025] S3: then, the sector-shaped steel plate drives the arc-shaped rack to rotate, the arc-shaped rack is engaged with the inner pinion of the coaxial gear, the outer gear of the coaxial gear is engaged with the clockwork gear, gear transmission is realized, the connection between the gear sliding groove and the clockwork drives the clockwork to rotate, the kinetic energy of the gear is converted into the elastic potential energy of the clockwork, after the damper stops working, the clockwork releases the elastic potential energy, drives the clockwork gear to rotate, and the initial resetting of the damper is realized through gear transmission;

[0026] S4: the three-point space positioning devices arranged at the two side bottom edges of the fixed steel plate and the bottom of the sleeve realize the functions of real-time measurement and data transmission of the angle of the damper, and the space coordinate receiver is used for data storage and processing; the difference between the three-point space coordinates after passive resetting and the initial coordinates is compared, and the resetting degree of the damper is determined;

[0027] S5: finally, the active resetting motor drives the motor gear to rotate, the engagement between the motor gear and the coaxial gear realizes gear transmission, the active resetting of the damper is realized, and the space coordinates are determined in real time in combination with the three-point space positioning devices, so that the damper is actively and accurately reset.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The intelligent reset displacement amplification type rotary friction damper provided by the application can make the displacement of the damper greater than the relative displacement of the connecting point through the displacement amplification device when the damper is working, so that the damper can fully exert the energy dissipation capacity.

[0030] The intelligent reset displacement amplification type rotary friction damper provided by the application can control the friction force between the friction material and the fan-shaped steel plate by adjusting the tightness of the tension bolt, so as to realize different damping forces.

[0031] The intelligent reset displacement amplification type rotary friction damper provided by the application can make the displacement of the damper greater than the relative displacement of the connecting point through the displacement amplification device when the damper is working, so that the damper can fully exert the energy dissipation capacity. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are used to explain the application, but do not constitute a limitation of the application.

[0033] Figure 1 It is a schematic diagram of the overall structure of the application.

[0034] Figure 2 It is a front view of the overall structure of the application.

[0035] Figure 3 It is a schematic diagram of the connection between the fan-shaped steel plate, the arc-shaped rack and the clockwork gear of the application.

[0036] Figure 4 It is a schematic diagram of the arc-shaped steel plate of the amplification device of the application.

[0037] Figure 5 It is a schematic diagram of the connection between the coaxial gear and the fixed steel plate of the application.

[0038] Figure 6 It is a schematic diagram of the active reset motor and the three-point space positioning device of the application.

[0039] Figure 7 It is a bottom view of the three-point space positioning device of the application.

[0040] Figure 8 It is a schematic diagram of the connection between the clockwork gear and the clockwork of the application.

[0041] Figure 9 It is a schematic diagram of the connection between the clockwork gear and the clockwork of the application.

[0042] Figure 10 It is a schematic diagram of the active reset motor of the application.

[0043] Figure 11 Fig. 1 is a schematic view of the internal structure of the active reset motor of the present application.

[0044] In the drawings:

[0045] 1, steel gasket; 2, column bolt; 3, friction material; 4, fixed steel plate; 5, arc-shaped rack; 6, sleeve; 7, tension bolt; 8, gear bolt; 9, rack bolt; 10, coaxial gear; 11, fixing bolt; 12, clockwork gear; 13, clockwork; 14, sector steel plate; 15, sleeve bolt; 16, active reset motor; 17, three-point spatial positioning device; 41, clockwork fixing rod; 121, sliding groove; 161, motor gear; 162, spatial coordinate receiver; 163, motor. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0047] As shown in Figures 1 to 7 The present application provides a smart reset displacement amplification type rotary friction damper, wherein the damper comprises a displacement amplification friction energy dissipation part and a smart reset part.

[0048] The displacement amplification friction energy dissipation part comprises friction material 3, tension bolt 7 and displacement amplification device; the displacement amplification device comprises sector steel plate 14 and fixed steel plate 4, and the sector steel plate 14 is connected with the fixed steel plate 4 through fixing bolt 11.

[0049] The sleeve 6 is arranged on one side of the top of the sector steel plate 14.

[0050] The fixed steel plate 4 is connected with steel gasket 1 through column bolt 2 on one side.

[0051] The smart reset part comprises arc-shaped rack 5, rack bolt 9, gear bolt 8, coaxial gear 10, clockwork gear 12, clockwork 13, active reset motor 16 and three-point spatial positioning device 17.

[0052] The fan-shaped steel plate 14 is rotationally connected with the fixing bolt 11, the friction material 3 is fixed in the inner side of the fixed steel plate 4 by welding, the fan-shaped steel plate is located in the inner side of the friction material, the friction material 3 and the fan-shaped steel plate 14 are in friction contact through the loose bolt 7, the fixed steel plate, the friction material and the fan-shaped steel plate of the displacement amplification friction energy dissipation part are connected into an integrated body by the fixing bolt and the loose bolt, the fixed steel plate 4, the friction material 3 and the fan-shaped steel plate 14 are parallel to each other. The fan-shaped steel plate 14 can rotate around the fixing bolt 11.

[0053] The arc-shaped rack 5 in the intelligent reset part is fixed on the fan-shaped steel plate 14 through the rack bolt 9, the coaxial gear 10 is fixed on the fixed steel plate 4 through the gear bolt 8, the clockwork gear 12 and the clockwork 13 are connected into an integrated body with the fan-shaped steel plate 14 through the fixing bolt 11; the arc-shaped rack 5 and the clockwork gear 12 are both in mesh with the coaxial gear 10.

[0054] The active reset motor 16 is arranged on the fixed steel plate 4, the inner side of the fixed steel plate 4 is provided with a motor gear 161, the motor gear 161 is in mesh with the coaxial gear 10; the three-point space positioning device 17 is respectively arranged at the two bottom edges of the fixed steel plate 4 and the bottom of the sleeve 6.

[0055] The middle part of the fan-shaped steel plate 14 is fixed by the fixing bolt 11, the fan-shaped steel plate 14 is provided with a hole groove at the loose bolt 7, the fan-shaped steel plate 14 can rotate around the fixing bolt 11, the rotational displacement amplification is realized through the displacement amplification device, the fan-shaped steel plate 14 can slide back and forth between the friction materials, the hole groove plays a limiting role for the sliding of the fan-shaped steel plate 14, and the fan-shaped steel plate 14 is slidably connected with the loose bolt 7. The fan-shaped steel plate 14 can slide back and forth through the hole groove, the loose bolt 7 can be adjusted in tightness, the friction between the friction material 3 and the fan-shaped steel plate 14 is controlled by adjusting the tightness of the loose bolt 7, so that the damper achieves different damping effects. The upper end of one side of the fan-shaped steel plate 14 is provided with a horizontal flange, the horizontal flange is connected with the sleeve 6 through the sleeve bolt 15, and then the connection between the damper and the beam is realized.

[0056] The fan-shaped steel plate 14 is provided with a bolt hole at the fixing bolt 11, the horizontal distance between the bolt hole and the hole groove is L1, and the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2. By adjusting the size of the fan-shaped steel plate 14, i.e. the ratio of L1 and L2, the control of the displacement amplification multiple is realized. The displacement amplification energy dissipation principle is that the fan-shaped steel plate rotates around the fixing bolt, the amplification device composed of the fan-shaped steel plate, the fixing bolt and the fixed steel plate realizes the rotational displacement amplification at the hole groove, and the friction energy dissipation with the friction material.

[0057] A sliding slot 121 is formed in the inner wall of the clockwork gear 12, and a clockwork fixing rod 41 is arranged on the fixed steel plate 4, the inner end of the clockwork 13 is connected with the sliding slot 121 on the clockwork gear 12, and the outer end of the clockwork 13 is connected with the clockwork fixing rod 41 on the fixed steel plate 4, so as to fix the outer side of the clockwork. Through the rotation of the clockwork gear 12, the inner end of the clockwork 13 is driven to rotate, and the kinetic energy of the gear is converted into the elastic potential energy of the clockwork, so as to provide a reset force after the earthquake.

[0058] The inner small gear of the coaxial gear 10 is meshed with the arc-shaped rack 5, and the large gear of the coaxial gear 10 has the same angular velocity, while the radii are set to be different, so as to achieve the effect of linear velocity amplification.

[0059] The outer large gear of the coaxial gear 10 is meshed with the clockwork gear 12. The outer large gear of the coaxial gear 10 has the same linear velocity as the clockwork gear 12, while the large gear in the coaxial gear 10 is set to have a larger radius than the clockwork gear 12, so as to amplify the angular velocity of the clockwork gear 12 and make it rotate by a larger angle, so as to provide more elastic potential energy for the clockwork and provide sufficient reset force for the reset of the damper.

[0060] The active reset motor 16 is internally provided with a space coordinate receiver 162 and a motor 163, and the space coordinate receiver 162 is used for receiving the space coordinates of the three-point space positioning device 17. After the preliminary reset is realized by the clockwork 13, the space coordinate receiver 162 obtains the three-point space coordinates after the preliminary reset, and the active reset motor 16 starts to work to fine-tune the damper after the preliminary reset, so that the three-point space coordinates return to the initial coordinate position, and the accurate reset is realized.

[0061] The three-point space positioning devices 17 are respectively arranged at the bottom edges of the two sides of the fixed steel plate 4 and the bottom of the sleeve 6, and are located in the same vertical plane. The three-point space positioning devices 17 are used for measuring the space coordinates and can transmit the coordinates, and the space coordinate receiver 162 is used for judging the reset degree of the damper after the initial reset.

[0062] In order to better realize the above-mentioned object of the application, the application further provides a use method of the intelligent reset displacement amplification type rotary friction damper, which specifically comprises the following steps:

[0063] S1: first, the sleeve 6 is connected with the beam through the sleeve bolt 15, and the fixed steel plate 4 is connected with the column through the column bolt 2 and the steel gasket 1, so as to realize the connection between the damper and the beam column of the building;

[0064] S2: Then, the beam rotates to drive the sleeve 6 and the connected sector steel plate 14 to rotate, the rotation center of the sector steel plate 14 is the center of the bolt hole at the fixed bolt 11, the sector steel plate 14 is provided with a hole groove at the loose bolt 7 to slide back and forth between the friction material 3, the horizontal distance between the bolt hole and the hole groove is L1, the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2, by controlling the size of the sector steel plate 14, that is, L1 is greater than L2, the rotational displacement amplification of the sector steel plate 14 at the friction material 3 is realized, and the friction energy dissipation capacity of the damper is improved;

[0065] S3: Then, the sector steel plate 14 drives the arc rack 5 to rotate, the arc rack 5 is engaged with the inner pinion of the coaxial gear 10, the outer gear of the coaxial gear 10 is engaged with the clockwork gear 12, gear transmission is realized, the clockwork gear 12 is driven to rotate through the connection of the gear sliding groove 121 and the clockwork 13, the elastic potential energy of the clockwork 13 is realized by the conversion of gear kinetic energy, after the damper stops working, the clockwork 13 releases the elastic potential energy to drive the clockwork gear 12 to rotate, and the initial reset of the damper is realized through gear transmission;

[0066] S4: The three-point space positioning device 17 is arranged on the bottom edges of the fixed steel plate 4 and the bottom of the sleeve 6 to realize real-time measurement of the angle of the damper and data transmission function, data storage and processing are realized through the space coordinate receiver 162, and the reset degree of the damper is judged by comparing the difference between the three-point space coordinates after passive reset and the initial coordinates;

[0067] S5: Finally, the active reset motor 16 drives the motor gear 161 to rotate, gear transmission is realized through the engagement of the motor gear 161 and the coaxial gear 10, and the active reset of the damper is realized, the space coordinates are judged in real time by combining the three-point space positioning device 17, and the active and accurate reset function of the damper is realized.

[0068] As shown in Figure 1 , Figure 2 , Figure 4 , the friction material 3 is fixed in the inner sides of the left and right fixed steel plates 4 by welding, the middle part of the sector steel plate 14 is connected with the fixed steel plate 4 through the fixed bolt 11 to form a displacement amplification device, the left end loose bolt 7 connects the fixed steel plate 4, the friction material 3 and the sector steel plate 14 together, and the sector steel plate 14 is provided with a hole groove at the loose bolt 7. The damper is connected with the column through the column bolt 2 on one side of the fixed steel plate 4, and a steel backing plate 1 is additionally arranged, and the damper is connected with the beam through the horizontal flange of the sector steel plate 14 and the sleeve 6.

[0069] With the above scheme: provided with the steel backing plate, the stress of the column is more uniform, the fan-shaped steel plate 14 is provided with a hole groove at the tension bolt 7, can rotate around the fixed bolt 11, through the amplification device, the rotation displacement amplification at the hole groove is realized, and the friction with the friction material is achieved to achieve the purpose of energy dissipation, through adjusting the size of the fan-shaped steel plate 14, that is, the proportion of the horizontal distance from the bolt hole of the fan-shaped steel plate 14 to the hole groove to the horizontal distance from the bolt hole to the geometric center of the horizontal flange, the displacement amplification multiple is controlled, through adjusting the tension bolt 7, the friction between the fan-shaped steel plate 14 and the friction material 3 can be changed, and different damping forces are provided.

[0070] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The arc-shaped rack 5 is fixed on the fan-shaped steel plate 14 by the rack bolt 9, the coaxial gear 10 is fixed on the fixed steel plate 4 by the gear bolt 8, the inner side pinion of the coaxial gear 10 is engaged with the arc-shaped rack 5, and the outer side gear is engaged with the clockwork gear 12.

[0071] With the above scheme: when the fan-shaped steel plate 14 rotates around the fixed bolt 11, the arc-shaped rack 5 fixed on the fan-shaped steel plate 14 is driven to rotate, thereby driving the coaxial gear 10 to rotate, the pinion and the gear of the coaxial gear 10 have the same angular velocity, while the radii are set to be different, thereby achieving the effect of amplifying the linear velocity, the gear of the coaxial gear 10 is engaged with the clockwork gear 12, and the two have the same linear velocity, while the radius of the gear of the coaxial gear 10 is set to be twice that of the clockwork gear 12, thereby amplifying the angular velocity of the clockwork gear 12, so that the clockwork gear 12 rotates by a larger angle, more elastic potential energy is provided for the clockwork 13, and the damper has sufficient reset force.

[0072] As shown in Figure 1 , Figure 6 , Figure 7 , Figure 10 , Figure 11 The active reset motor 16 is installed on the fixed steel plate 4, the motor gear 161 is located on the inner side of the fixed steel plate 4 and is engaged with the coaxial gear 10; the three-point space positioning device 17 is located at the bottom of the fixed steel plate 4 and the bottom of the sleeve, and the active reset motor 16 is internally provided with a space coordinate receiver 162.

[0073] With the above scheme: the space coordinate receiver 162 can receive the space coordinates of the three-point space positioning device 17; after preliminary reset is realized through the clockwork 13, the space coordinate receiver obtains the three-point space coordinates after preliminary reset, and the active reset motor 16 starts to work to fine-tune the damper after preliminary reset, so that the three-point space coordinates return to the initial coordinate position, and accurate reset is realized.

[0074] AsFigure 1 、 Figure 8 As shown in the figure, the fixed steel plate 4 is provided with a spring fixing rod 41.

[0075] The above scheme is adopted: the outer end of the spring 13 is connected with the spring fixing rod 41 on the fixed steel plate 4, so that the spring 13 is fixed on the outside, the spring gear 12 rotates to drive the inner end to rotate, and the gear kinetic energy is converted into the elastic potential energy of the spring.

[0076] As shown in the figure, Figure 1 、 Figure 9 As shown in the figure, the spring gear 12 is provided with a sliding groove 121.

[0077] The above scheme is adopted: the inner end of the spring 13 is fixed through the sliding groove 121 on the spring gear 12, and the fixing mode is similar to the mortise and tenon connection. The depth of the sliding groove 121 can be determined according to the spring 13. The design of the sliding groove 121 can provide limiting, and is convenient for on-site installation.

[0078] The working principle of the present application is that the fixed steel plate 4 can be connected with the column through the column bolt 2 and the steel gasket 1. The upper end of the fan-shaped steel plate 14 is provided with a horizontal flange, which can be connected with the sleeve 6 through the sleeve bolt 15. The sleeve 6 can be connected with the beam, so that the intelligent reset displacement amplification type rotary friction damper is connected with the structure.

[0079] The fan-shaped steel plate 14 of the displacement amplification friction energy dissipation part is connected with the fixed steel plate 4 through the fixing bolt 11 to form a displacement amplification device. The fan-shaped steel plate 14 is provided with a hole groove at the tension bolt 7. The fan-shaped steel plate 14 can rotate around the fixing bolt 11 to realize rotary displacement amplification through the amplification device. The friction material 3 is fixed on the inner side of the fixed steel plate 4 through welding. The friction material 3 is in friction contact with the fan-shaped steel plate 14 through the tension bolt 7. The fixed steel plate 4, the friction material 3 and the fan-shaped steel plate 14 are parallel to each other.

[0080] The intelligent reset part includes an arc-shaped rack 5, a rack bolt 9, a gear bolt 8, a coaxial gear 10, a spring gear 12, a spring 13, a driving reset motor 16 and a three-point space positioning device 17. The arc-shaped rack 5 is fixed on the fan-shaped steel plate 14 through the rack bolt 9. The coaxial gear 10 is fixed on the fixed steel plate 4 through the gear bolt 8. The spring gear 12 and the spring 13 are connected with the fan-shaped steel plate 14 through the fixing bolt 11. The arc-shaped rack 5 and the spring gear 12 are engaged with the coaxial gear 10. The inner end of the spring 13 is connected through the sliding groove 121 on the spring gear 12. The outer end of the spring is connected with the fixed steel plate 4 through the spring fixing rod 41. The driving reset motor 16 is installed on the fixed steel plate 4. The motor gear 161 is located on the inner side of the fixed steel plate 4 and is engaged with the coaxial gear 10. The three-point space positioning device 17 is located at the bottom of the two sides of the fixed steel plate 4 and the sleeve respectively.

[0081] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A smart reset displacement-amplified rotational friction damper, characterized by: The damper comprises a displacement amplification friction energy dissipation part and an intelligent reset part; The displacement amplification friction energy dissipation part comprises friction material (3), loose bolt (7), displacement amplification device; the displacement amplification device comprises sector steel plate (14) and fixed steel plate (4), sector steel plate (14) is connected with fixed steel plate (4) through fixed bolt (11); One side top of the sector steel plate (14) is provided with a sleeve hoop (6); One side of the fixed steel plate (4) is connected with a steel washer (1) through a column bolt (2); The sector steel plate (14) is rotationally connected with the fixed bolt (11), the friction material (3) is fixed in the inner side of the fixed steel plate (4) by welding, the friction material (3) and the sector steel plate (14) are in friction contact through the loose bolt (7), the fixed steel plate (4), the friction material (3) and the sector steel plate (14) are parallel to each other; The intelligent reset part comprises arc-shaped rack (5), rack bolt (9), gear bolt (8), coaxial gear (10), clockwork gear (12), clockwork (13), active reset motor (16), three-point space positioning device (17); the arc-shaped rack (5) in the intelligent reset part is fixed on the sector steel plate (14) through the rack bolt (9), the coaxial gear (10) is fixed on the fixed steel plate (4) through the gear bolt (8), the clockwork gear (12) and the clockwork (13) are connected with the sector steel plate (14) as a whole through the fixed bolt (11); the arc-shaped rack (5) and the clockwork gear (12) are engaged with the coaxial gear (10); The active reset motor (16) is arranged on the fixed steel plate (4), the inner side of the fixed steel plate (4) is provided with a motor gear (161), the motor gear (161) is engaged with the coaxial gear (10); the three-point space positioning device (17) is respectively located at the two side bottom edges of the fixed steel plate (4) and the bottom of the sleeve hoop (6); The sector steel plate (14) is provided with a hole groove at the loose bolt (7), and the sector steel plate (14) is slidingly connected with the loose bolt (7); The upper end of one side of the sector steel plate (14) is provided with a horizontal flange, the horizontal flange is connected with the sleeve hoop (6) through a sleeve hoop bolt (15), thereby realizing the connection between the damper and the beam; The sector steel plate (14) is provided with a bolt hole at the fixed bolt (11), the horizontal distance between the bolt hole and the hole groove is L1, and the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2; by adjusting the size of the sector steel plate (14), i.e. the ratio of L1 and L2, the control of the displacement amplification multiple is realized; The inner wall of the clockwork gear (12) is provided with a sliding groove (121), the fixed steel plate (4) is provided with a clockwork fixing rod (41), the clockwork (13) is connected at the inner end through the sliding groove (121) on the clockwork gear (12), and the outer end of the clockwork (13) is connected with the clockwork fixing rod (41) on the fixed steel plate (4).

2. The self-resetting displacement-amplified rotational friction damper according to claim 1, wherein: The coaxial gear (10) comprises a small gear on the inner side and a large gear on the outer side arranged coaxially; The inner side small gear of the coaxial gear (10) is engaged with the arc-shaped gear rack (5); The outer side large gear of the coaxial gear (10) is engaged with the clockwork gear (12).

3. The self-resetting displacement-amplified rotational friction damper of claim 1, wherein: The active reset motor (16) is internally provided with a space coordinate receiver (162) and a motor (163), and the space coordinate receiver (162) is used for receiving the space coordinates of the three-point space positioning device (17).

4. The self-resetting displacement-amplified rotational friction damper of claim 2, wherein: The three-point space positioning device (17) is arranged at the bottom edges of the two sides of the fixed steel plate (4) and the bottom of the sleeve (6), and the three are in the same vertical plane.

5. A method of using the smart reset displacement amplification rotary friction damper of claim 3, wherein: The method comprises the following steps: S1: firstly, the sleeve (6) is connected with the beam through the sleeve bolt (15), and the fixed steel plate (4) is connected with the column through the column bolt (2) and the steel gasket (1), so as to realize the connection between the damper and the beam column of the building; S2: then, when the beam rotates, the sleeve (6) and the connected sector-shaped steel plate (14) rotate, the rotation center of the sector-shaped steel plate (14) is the center of the bolt hole at the fixed bolt (11), the sector-shaped steel plate (14) is provided with a hole groove at the tension bolt (7) to allow it to slide back and forth between the friction material (3), the horizontal distance between the bolt hole and the hole groove is L1, and the horizontal distance between the bolt hole and the geometric center of the horizontal flange is L2, by controlling the size of the sector-shaped steel plate (14), that is, L1 is greater than L2, the rotation displacement amplification of the sector-shaped steel plate (14) at the friction material (3) is realized, and the friction energy dissipation capacity of the damper is improved; S3: then, the sector-shaped steel plate (14) drives the arc-shaped gear rack (5) to rotate, the arc-shaped gear rack (5) is engaged with the inner side small gear of the coaxial gear (10), the outer side large gear of the coaxial gear (10) is engaged with the clockwork gear (12), gear transmission is realized, the clockwork gear (12) is connected with the clockwork (13) through the gear sliding groove (121), the clockwork (13) is driven to rotate, the elastic potential energy of the clockwork (13) is converted from the gear kinetic energy, after the damper stops working, the clockwork (13) releases the elastic potential energy, drives the clockwork gear (12) to rotate, realizes the initial reset of the damper through gear transmission; S4: the three-point space positioning device (17) is arranged at the bottom edges of the two sides of the fixed steel plate (4) and the bottom of the sleeve (6), so as to realize the real-time measurement of the angle of the damper and the data transmission function, the space coordinate receiver (162) is used for data storage and processing, the difference between the three-point space coordinates after passive reset and the initial coordinates is compared, and the reset degree of the damper is judged; S5: finally, the active reset motor (16) drives the motor gear (161) to rotate, realizes gear transmission through the engagement between the motor gear (161) and the coaxial gear (10), and realizes the active reset of the damper, and the three-point space positioning device (17) is combined to judge the space coordinates in real time, so as to achieve the active and accurate reset function of the damper.

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