TW524934B - The variable friction damper - Google Patents

Abstract

The invention, named variable friction damper, consists of a friction damper and an actuation device. The friction damper is composed of left and right sets of friction pads that produce slip forces and provide energy dissipation capacity for seismic structures. At the center of the damper and in between the friction pads there is a wedge block and a pair of wedge pads. The wedge block is bolted on a ball screw, so the displacement of the wedge block can be adjusted by turning the ball screw that is driven by an actuation device, such as a serve motor. The control command of the actuation device is computed by a control unit and is determined by structural vibration signals that are measured by sensors mounted on the structure. By controlling the actuation device and the rotation of the ball screw, the wedge block can be driven and produce a controllable normal contact force between the friction pads. In turn, this controllable normal force produces a variable slip force for the friction damper. A seismic structure with variable friction dampers will possess a better energy dissipation capacity than a conventional passive friction damper. The use of the wedge block allows a more uniform distribution of the normal contact force and reduces the demand on the control torque supplied by the actuation device.

Description

524934 A7 ________B7 V. Description of the invention (1) ----- hlk 丨 丨 f 丨 f Please read the note on the back 1! Then fill out this page} The present invention relates to a variable friction damper, especially a Use a smaller control force to generate a larger frictional damping force, and a variable friction damper that can adjust the frictional damping force in real time according to the structure response and the magnitude and characteristics of external force deflection. According to this, the seismic design of structures is a very important part of the design of structures, and it can minimize the impact or damage of structures on vibrations. It is different from the traditional idea of using structural toughness as a seismic design method. Structural energy dissipation technology to improve the seismic performance of structures has gradually been accepted by the engineering community. The so-called energy-dissipation technology refers to the installation of energy-dissipating elements on the original structural system to provide an additional energy-dissipating mechanism of the structure. When an earthquake strikes, part of the input structure ’s motion is absorbed by the damping element, which can reduce strong earthquakes. The toughness requirements of the main structure sequence can also reduce the damage of structural members such as beams and columns by strong earthquakes. Based on this concept, the academic and engineering communities have developed many energy dissipating components with different mechanical properties in the past two decades. The frictional damper printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs is one of the aforementioned energy dissipating elements. It was originally introduced in the 1980s. It was proposed by Canadian scholars in the 1980s. After 20 years of evolution, quite a number of countries have developed Type and practical application example; a typical friction damper is a friction sliding interface placed inside, and a fixed forward force is applied to the interface. When an earthquake strikes, the two ends of the damper will have a relative displacement. This positive force That is, a sliding friction force of a known size is generated on the sliding interface to dissipate the vibration energy of the structure. In the building structure, the friction damper is generally installed with diagonal, K, and X-type diagonal braces to be installed between floors, using earthquakes. The inter-layer displacement caused by time will cause the two ends of the component to be relatively displaced and choose their proper dissipative effect; by selecting the appropriate friction interface material, the frictional damping will be made 2

524934 A7 B7 V. Description of the invention (2 The device can still turn under the reciprocation of an earthquake-the miscellaneous characteristics and mechanical behavior 0 The above friction damper is a preset fixed due to its sliding friction force, which is generally called Dynamic friction damper (passive fricti () ndqinger), although this type of damper has reached the practical stage, but there is still room for improvement, the original description is as follows: x 'Because of 1 · Ministry of Economic Affairs Intellectual Property Bureau employee consumer cooperative It is printed that the energy dissipation capacity of the friction damper is related to the initial sliding friction force that it can generate. If the sliding friction force is too large, it may happen that the damper does not slide for most of the earthquake duration, so it cannot be achieved. The best energy dissipating effect 2. If the preset sliding friction force is too small, although the damper is in the sliding state for most of the time, but the energy dissipation capacity of the element is the sliding friction force multiplied by the displacement, so the ideal reduction cannot be achieved. 3. The frictional behavior of the object has two states of sliding and stagnation. When the damper switches between these two states, discontinuous sliding behavior will occur. The disadvantage of amplifying the acceleration response of the structure is detrimental to the damping effect of the structure. In addition, there is a lever-type frictional resistance variable device which is another application implementation type of the above-mentioned friction damper (announcement number: 346524), which is mainly described in section 廿As shown in the three figures, a lever-type frictional resistance variable device (20) is installed between the upper beam (101) and the lower beam (102) of the structure (10). The support member (201) and the bracket (103) of the upper beam (101) are connected by the arm (202) of the stern-type frictional resistance variable device (20) and the arm (20). 2) The lower end is pivotally located at one end of the braking device (30), and at the same time, the supporting frame (301) of the actuating device (30) is provided with a plurality of interphase and mutual contact frictions. 3 This paper size is applicable to China National Standard (CNS) A4 specification (210X 297 mm) (Please read the notes on the back before filling this page) ΦΙ. 524934 A7 B7 V. Invention Description (3) (Please read the notes on the back before filling this page ) Resistor plate (301) and friction pad (302) (as shown in Figure 24), and actuate the device A support bolt (301) of (30) is provided with a force bolt (301), and the other end of the tension bolt (301) is pressed against a pressing pad (301), and By pushing the tension bolt (3021) against the pressing pad (303), a positive force is exerted on the friction resistance plate (⑽) and the friction pad (302); and one end of the tension bolt (3021) It is fixed on one end of the rotating sample (304), and the other end of the rotating rod (301) is screwed onto a screw sample (305), and the screw (302) is driven by a servo motor (3 〇6) Cooperate with a control device to control its rotation; By this, when the structure (10) is flexed by an external force, the change of the structure can be picked up according to the displacement detector (10) installed on the structure (10). , And output the detection signal to the control device, and after the control device obtains the required actuation force, output the control signal to the servo motor (306), so that the servo motor (306) makes the servo motor (3) 〇6) Drive the screw (305) to rotate quantitatively, and make the rotation sample (301) drive the tension bolt (3021) to deflect, so as to adjust the tension bolt (302) to be applied to the pressing pad (303, friction Resistance plate (3 { ) 1) and the forward force on the friction pad (3G2), so as to adjust the most appropriate forward force according to the structural change of the structure (10), and obtain the most appropriate friction damping force. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, although the above-mentioned variable variable friction resistance device can adjust the forward force applied to the friction damper in time to control the friction damping force in accordance with the seismic force characteristics and the structure response, It can be called a semi-active friction damper, but it still has the following problems in actual use: 1 _ The control of its forward force is directly exerted on the friction washer by the tension bolt, but this kind of application When the friction damper in force mode is installed on bridges and civil structures, in order to achieve the effect of effective energy dissipation and damping, the paper size of this paper applies the Chinese National Standard (CNS) A1 specification (210 X tear mm) 524934 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the Invention (4) The friction force of the friction damper needs about tens of metric tons, and the forward force required for conversion is about hundreds of tons. Spectrum (because the maximum friction force in the friction damper is proportional to the positive force applied to the friction interface), therefore, the friction damper of these structures, such as the braking device and tension bolts, require For such a huge positive force in line with the desired design, is bound to be designed to be very large, so is not conducive to install in addition to, its production cost is high. 2. Since the frictional dampers with adjustable forward force can be installed and used with supporting members installed in the structure, but the specifications of the supporting members must be designed according to the size of the structure. Therefore, when designing and installing Each has its own special considerations, and cannot be installed in the same way as the current commonly used dampers (such as hydraulic dampers). Therefore, in addition to the difficulty of its implementation, it is not conducive to different types of dampers ( (Such as hydraulic dampers and such dampers that can adjust the forward force); 3. Since it uses a tension bolt to directly press the pressure pad, it applies a positive force to the friction resistance plate and the friction pad, and There is only a single point of contact between the force applying point of the tension bolt and the pressing pad. Therefore, the forward force is not easily distributed on the friction interface, and the effect of friction energy dissipation is unstable. The reason is that the inventor has taken this into consideration, and with years of academic research and practical experience to supplement it, he provided a variable friction damper to completely solve the above problems. The main object of the present invention is to provide a variable friction damper, which is mainly composed of a friction damper and an actuating device supplemented by a control unit. The friction damper is mainly arranged between two coupling seats provided on the structure. The first and second friction plate groups consisting of several left and right friction plates, and their left and 5 (please read the precautions on the back before filling this page) b 呑 Γ This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Office of the Ministry of Economic Affairs 524934 A7 B7 __ 一 " 一 —— — — — " 1 1 _ Im_ _ 丨 丨 Which The friction plates are inserted correspondingly to generate relative sliding. At the same time, wedge plates are provided between the first and second friction plate groups relative to the inner group, and a wedge block is provided between the two wedge plate groups. On the screw, the other end of the adjusting rod is connected to the actuating device. The actuating device can be a stepping motor, and the actuating device is controlled by a control unit that can monitor the state of the structure being flexed by external force. ,and An appropriate output signal can be sent to the actuating device, so that the actuating device drives the adjustment screw-like rotation, and the wedge block can be moved when the adjustment screw is rotated, so that the wedge block can press the wedge pieces on the two sides, so that the first It applies positive force with the left and right friction plates of the second friction plate group and generates appropriate friction damping force; thereby, the friction damper can be adjusted at any time according to the characteristics of the solid response of the structure and the seismic force, and can make The forward force is evenly distributed on the friction interface, and a larger friction damping force can be achieved by applying less bolt tension. In order to make the present invention easy to understand using the technical means, the invention's specific desires, and the purpose and effect, the detailed description is given below with reference to the drawings and figures: Refer to the drawings: First diagram: Schematic diagram of the system of the present invention Second diagram: This Appearance perspective view of the friction damper and actuating device of the invention. Third figure. • Front view of the friction damper and actuating device of the present invention. Figure: Side cross-sectional schematic diagram of the friction damper and actuating device of the present invention 6 This paper is again applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) --------------- 1Τ ------ $ · (Please read the notes on the back before filling out this page) 524934 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ______B7_ V. Description of the invention (6) Figure 6: The invention Schematic diagram of the embodiment of the single beveled wedge block of the friction damper. Figure 7: Schematic diagram of the installation example of the wedge block of the friction damper of the present invention. VIII. Schematic diagram of the installation example of the friction damper of the present invention. Schematic diagram of a friction damper installation embodiment ㈡10th diagram ·· Schematic diagram of a friction damper installation embodiment of the invention㈢ 11th diagram: an external perspective view of an embodiment of the invention 12th diagram: an embodiment of the invention Front view cross-section schematic diagram 13 · • One embodiment of the present invention Top cross-section schematic diagram Fourteenth diagram: One embodiment of the present invention Side cross-section schematic diagram Fifteenth diagram: Two embodiments of the present invention View Schematic Figure 16 ·· Top view of the structure of the second embodiment of the present invention Figure 17 · Side view of the structure of the second embodiment of the present invention Figure 18 ·· Schematic diagram of the installation and implementation of the second embodiment of the present invention ㈠ Nineteenth: Schematic diagram of installation and implementation of the second embodiment of the present invention ㈡ Twentyth diagram: Schematic diagram of installation and implementation of the second embodiment of the present invention ㈢ First diagram: After the structure and the passive friction damper of the present invention capture the strength Comparison diagram of the vibration reduction effect㈠ Figure 22: Comparison of the vibration reduction effect of the present invention and the passive friction damper on the reinforcement of the structure㈡ Figure 23: Structure of the Announcement No. 346524 Schematic diagram No. 24: Schematic diagram of the partial cross-section structure of Announcement No. 346524 Reference number in the diagram: ____ 7 This paper size applies to China's CNS) M specification (no'〆297 公 AX) — · '(Please read first Note on the back, please fill in this page again) The booking line is 524934 A7 B7 V. Description of the invention (7) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs: (10) Structure (101) Upper 搮 (102) Lower beam ( 20) Lever-type friction resistance variable device (201) Support member (202) Arm (30) Actuator (300) Support frame (301) Friction plate (302) Friction pad (3021) Tension bolt (303) Press Pad (304) Rotating sample (305) Screw (306) Servo motor (40) Displacement sensor The invention • • (1) Friction damper ^ (11) Left coupling seat (111), (112) side plate (113 ) Guide slider (12) Right coupling seat (121), (122) side plate (123) Guide slider (124), (125) side plate (126) Adjustment screw (127) Guide bar (13) First friction Disk group (14) Second friction plate group (131), (141) Left friction plate (132), (142) Right friction plate (133), (143) Wedge plate (134), (144) Elastic element (15) Wedge block (16) Auxiliary elastic element (2) Actuating device (21) Stepper motor (22) Controller (3) Control unit (31) Sensor meter (32) Digital calculator (4) Structure Body (41) Diagonal stay (5) Isolation support (Please read the precautions on the back before filling this page)

、 1T This paper size applies Chinese National Standard (CNS) A4 specification (21 OX297 mm) 524934 A7 B7 V. Description of invention 6) First, please refer to the first figure, the variable friction damper of the present invention is mainly It consists of a friction damper (1), an actuating device (2) supplemented by a control unit (3), and is installed in a structural body (4) with a diagonal brace Ui) or connected to two independent structural bodies U) The structure (4) may be a building, a bridge, a general civil structure or an electromechanical device, etc .; among them: the friction damper (1) is arranged between the left and right coupling seats (11), (12) The first and second friction plate groups (I3), (14) and a wedge-shaped block (1S) (please refer to the second to fifth figures together); one end of the left link seat (11) is pivoted At a predetermined position of the structure U), a number of guide sliders (H3) are provided between the two side plates (111) and (II2) on one side; and the right coupling seat d2) is in the same manner as the left coupling seat (11). Opposite, one end is also pivoted at a predetermined position of the structure (4) ', and a number of guide sliders (I23) are also provided between the front and rear side plates dH), (122), and One or several adjusting screws (126) are provided between the two side plates (124) and (乜 5) of the side and the bottom side; and the first and second friction plate groups (U) and (H) are the same and symmetrical Structural combination (can also be asymmetric combination), and each is made of several pieces of left and right friction plates (131), (132), (141), (I42) made of metal or synthetic materials with a wedge shape D33), (134), and the left and right friction plates (131), (Ul > and right friction plates (132), (142) and the wedge-shaped plates (133>, (143>) can be worn on the opposite sides On the guide sliders (113) and (123) of the left and right coupling seats (11) and (12), at the same time, the left and right friction plates (131), (132), U41), (I42) of each group are They are inserted into each other to produce mutual sliding, and have a stable coefficient of reciprocating friction. Furthermore, the wedge pieces (I33) and (I43) are arranged between the first and second friction piece groups (I3) and (I4). Relative to the inside, and its oblique _____9 scale of 5's applies to Chinese National Standard (CNS) (am97 public envy) ----- I --------- 1 (Please read the precautions on the back first (Fill in this page)

1. 1T printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 524934 Μ ____ Β7__ V. Description of the Invention (9) I -------- Φ — (Please read the precautions on the back before filling this page) Opposite; at the same time, between the first and second friction plate groups (13), (14) and the right connection seat (before 1W, rear side plates U21), (I22), elastic elements (I34), ( 144) to provide the inward pressure of the first and second friction plate groups (13), (14>), while changing the compression amount of the elastic elements (I34), (I44), the pressure provided can be changed at the same time; The wedge block (15) is set on the adjusting screw (I26) of the right coupling seat (I2), and is provided on the wedge pieces (133) of the first and second friction plate groups (13), (14), (143), the oblique portions on both sides can be placed correspondingly to the oblique sides of the wedge-shaped piece (I33>, (143>), and the escutcheon (I5) can be designed with a single oblique surface as shown in the sixth figure, and Use with a single friction plate group; In addition, another auxiliary elastic element (I6) can be provided between the wedge block (I5) and the right coupling seat (I2) (as shown in Figure 7); the actuation The step (2) can be constituted by a stepping motor (21) in cooperation with the actuator controller (22); and the stepping motor (21) can be connected to the friction damper (through a speed reduction gear set (not shown)) The adjustment media sample 1) Q26), at the same time, the stepping motor U1) is controlled by the actuator controller (22), and the actuator controller (22) is controlled by the control unit (3). Accurately drive the adjustment screw (126) to rotate. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed this control unit (3), which is equipped with induction • ten (3i) that can measure the actual response of the structure and through structural control theory. The developed control law and its arithmetic unit (32) constitute; the sensor (31) can be installed in a predetermined position of the structure U), so as to detect the structure (4) when it is disturbed by external force The displacement changes, and the required forward force is calculated and output to the actuator controller (22) through the signal adjuster, the arithmetic unit (32) and the control law, so that the actuator controller (M) drives Stepping Horse 10 This paper size applies to Chinese national standards (CNS ) A4 specification (210X297 mm1-printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 524934 A7 _B7____ V. Description of the invention (10) Up to (21) quantitative rotation, which can be adjusted when turning the adjustment lever (I26) The wedge block (15) is moved on the adjusting screw (126), and then a forward force is applied to press the wedge pieces (133), (143) and the first and second friction plate groups (13), (14) on both sides , So that each of the left and right friction plates (131), (132), (141), (142) generates an appropriate friction damping force. When the present invention is implemented, it can be installed between two independent structures to avoid collision between the two structures, and the vibration of the two structures can be reduced by the friction damping force generated by the present invention; As shown in FIG. 8, the variable friction damper of the present invention is arranged in the structure U) in the form of a diagonal diagonal brace U1), or as shown in FIG. 9 with a straight-line K-shaped diagonal The support (41) is installed on the structure, or as shown in the tenth figure, it is used in conjunction with the isolation support (5) to increase the damping force and energy dissipation capacity of the isolation system; and when the structure U) is disturbed by external forces At this time, each induction meter of the control unit (3) can transmit the detected vibration data of the structure U) to the digital computing unit (32), and the digital computing unit (32) can calculate the required forward force. And then output to the actuator controller (22) of the actuator (2), so that the actuator controller (22) drives the stepping motor U1) to rotate quantitatively according to the actual response of the structure U), and then drives the adjustment screw (I26) Turn and make the wedge block (15) on the screw can be adjusted on the adjusting screw (I26> Move to adjust the forward force exerted by the wedge block (1S) on the wedge pieces (133), (143) and the first and second friction plate groups (13), (14), so that the wedge piece (I5) cooperates The elastic elements (I34), (U4) squeeze the left and right friction plates (131), (132), (141), (142) on the first and second friction plate groups (13), (14); When the wedge block (15) pushes the left and right friction plates (131), (132), (141), (142), each of the left and right friction plates (131>, (132), __11__ applies to this paper size) China National Standard (CNS) A4 specification (210X297 mm) — ---- (Please read the precautions on the back before filling this page)

, 1T line 524934 A7 B7 V. Description of the invention "--- (141), (142) can slide freely in parallel on the guide sliders (113), (123), and through the elastic elements (I34), (144 The setting of) can make the positive force applied by the wedge block (ls) more even; by this, when the structure U) is vibrated by external force, it can be controlled by the control unit U) and the actuating device U). And timely adjust the displacement state of the adjusting screw (I26), and then change the magnitude of the forward force applied to the first and second friction plate groups (I3), (U), so that each of the left and right friction plates (131) , (132), (141), (142) When relative sliding friction occurs, an appropriate friction damping force can be generated to perform negative work on the structure U), thereby achieving the best energy dissipation effect. In addition, the present invention The friction damper (1) can also be as shown in the embodiment of the eleventh figure, the outer end faces of the right and right friction plates (132), (142) of the first and second friction plate groups (I3), (U) The upper recess has a number of embedded grooves (UU), (ΗΗ) [please refer to the twelfth to fourteenth drawings together], and the upper side of the right coupling seat (12) and the inner sides of the lower side plates are convexly provided with guide bars (I27 ), For the right friction plate (132), (142) to be embedded with its insert grooves (1321), (1 乜 1), and the right friction plate (I32), (Η2) set in the right coupling seat (12) ) Is connected with the right coupling seat (12), so that the left and right coupling seats (11), (I2) can still generate relative sliding friction under external force vibration, and cooperate with the control unit (3) and the actuating device (2). Control, and provide appropriate friction damping force in time to achieve the effect of energy dissipation and damping. Also, the friction damper (1) of the present invention can also be used in the structure (4) as shown in Figures 15-17 ) Beam and κ-type diagonal brace ui) (as shown in Figure 18); or used with X-shaped diagonal brace (41) as shown in Figure 19; or as shown in Figure 20, with spacer The seismic support (5) is used; and the left and right coupling bases (11) and (I2) are respectively set up and down. __ 12 This paper is suitable for financial rewards ^^ 准 ((: ] ^) / \ 4 specifications (2 offering 297 mm) ~ I -------- SI (please read the precautions on the back before filling this page), a U-port line Intellectual Property Bureau staff of the Ministry of Economy Printed by Cooperatives 524934 Printed by the Consumer Cooperative of the Bureau A7 Β7 V. Description of the invention (12) It is set on the beam and diagonal brace (41) of the structure U), and the guide slide samples of the left and right coupling blocks (11), (12) ( The left and right friction plates (131), (132), (132), (141), and (142) on 113) and (123) are also set up and down, and the first and second friction plate groups (13) The wedge block (I5) is arranged between the mold pieces (133) and (143) of (14), and the wedge block US) is screwed on the adjustment screw (12e); and the same is caused by the adjustment screw (I26) When the stepping motor (21) of the moving device (2) is driven, the wedge block (15) is moved thereon, and the positive force exerted by the wedge block (15) is adjusted in a timely manner so that when the structure U) is subjected to vibration, The upper friction plate (131), (141) (left friction plate) can slide freely between the four guide sliders (m) of the lower friction plate (132), (142) (right friction plate) It also generates appropriate frictional damping force, and the direction of sliding is not limited. Its motion range will not collide with the four guide sliders (123) below. Because of its initial design, its motion range is set to allow Amount of exercise, The maximum amount of deformation of the structure can withstand, but may be due to the vibration of the respective directions. Furthermore, it is known from the following formula for calculating the maximum frictional damping force (or the initial sliding friction force),

Fmax ⑺ = (2 μ m / k ϋ〇 / π / θ) where t: t = time maximum friction damping force (or initial sliding friction force) friction coefficient between the friction plates the number of friction interfaces (the fifth _ For example, π8) θ = the amount of upward movement of the wedge-shaped block. This material is measured by the position of the block when the elastic elements (133) and (144) are not in force. --------- Order --------- Line (Please read the precautions on the back before filling this page) 13 A7

524934 V. Description of the invention (l3) Measure k = stiffness (or spring coefficient) of the elastic element (I33), d44). In the above formula, μ ,, k, and 0 are fixed 私, and private Θ and 随 can be changed with Change of time. Therefore, as long as the upward displacement of the wedge is controlled, the friction resistance force (Fmaxft) can be controlled. In addition, it can be known from the above formula that increasing the number of friction interfaces and the inclination angle θ under the same displacement can increase the friction damping force. The above formula is applicable to a wedge block with double slopes. If the wedge is a single slope, the above formula should be divided by two. Please refer to the first and second figures shown in the figure. This is a three-story building model of the present invention using a number of simulations to weigh about 30 tons. After the variable friction damper and the passive friction damper of the present invention are installed, Comparison of shock absorption. Among them, the structure without damper refers to the structure without any damper, and the seismic force to be used in the simulation is the shock wave of El Centro (1940) in the United States. It can be seen that the reduction of the acceleration of each floor by the variable damper of the present invention is better than the passive friction damper; and from the second figure, it can be seen that the former is also effective in reducing the shear force between floors. In the latter. From the above description, it can be known that the variable friction damper of the present invention has the following advantages compared with the user: 1. Since the present invention uses the method of increasing the friction interface and the wedge principle, it can be obtained by applying a small screw tension Large forward force, so the variable damper can be miniaturized and meet the design of the structure for seismic resistance, which can greatly reduce costs and make installation easier. 2. After the variable friction damper of the present invention is assembled, its installation method is the same as that of this paper. 14 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back first? Please fill in this page again for details) Φ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ____ I ---- lit ----- 1 -------------------- 524934 A7

Description of the invention (14 dampers (such as hydraulic dampers) are the same, that is, the left and right coupling seats can be directly connected with a variety of diagonal structures, so there is a use of replacement with the general type of dampers Operation 3. The components of the present invention are simple, and do not require complicated devices such as rods and bearings. Therefore, the variable friction damper of the present invention is more conducive to operation. 4. The present invention uses a wedge-shaped block to The friction plate exerts a positive force, which can distribute the positive force evenly on the friction interface, thereby ensuring the stability and implementation effect of energy dissipation. 5. Since only a small screw tension is required, it can be maintained. Large friction damping force, therefore, it is possible to make the material less prone to fall and the elastic fatigue of the screw, and improve its service life. In summary, the embodiments of the present invention can indeed achieve the expected use effect, and its The specific structure disclosed has not only been seen in similar products, nor has it been disclosed before the application. It has fully complied with the provisions and requirements of the Patent Law, and filed an application for an invention patent in accordance with the law. Patent-pending, then the real sense of ethics will ----------_ |. (Please read the Notes on the back to fill out this page)

Line 1T Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 15 This paper size applies to Chinese national standards (CNS> A4 specification (210X297 mm)

Claims (1)

524934 A8 B8 C8 -_______ D8 6. Scope of patent application (1) 1. A variable friction damper is a friction damper provided on a structure. A wedge block is arranged between two sets of friction plates of the friction damper. The wedge block It is controlled by a uniform motion device, and the actuation device will control the position of the wedge block in real time according to the structural response, so as to control the forward force of the friction surface. 2 · —A variable friction damper, comprising: a friction damper, which is arranged between two coupling seats provided on the structure, and the first and second frictions are respectively composed of several friction plates that can generate relative sliding A set of pads, and an auxiliary elastic element is provided between the first and second friction pad sets and one of the coupling seats. At the same time, one or more of the coupling pads is provided with one or more adjusting screws, and a wedge is provided between the two friction pad groups. Block; The unit is controlled by a control unit and is connected with the adjusting screw of the friction damper, which can drive the adjusting screw to rotate in a timely manner and drive the wedge block to move. 3. The variable friction damper according to item 2 of the applied patent park, wherein the first and second friction plate groups are composed of a plurality of left and right friction plates that can be correspondingly inserted with each other and a mold plate. The two coupling seats can be arranged left and right, and a digital guide tilt bar is provided on the left and right friction plates and wedge plates to cover the left and right miscellaneous and _ plates. Free parallel sliding on the slider. 4. The variable friction damper as described in the second item of the patent application, wherein the first and second friction plate groups can be recessed with a number of grooves on the end surfaces of the two sides of the friction plate. The convex part on the seat can be a convex strip for the embedded groove. 5. The variable friction damper described in item 2 of the patent application Fangu, in which (please read the precautions on the back before filling out this page), v5 printed by the Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 16 524934 A8 B8 C8 — D8 printed by the Consumer Cooperatives of Wisdom and Time Bureau of the Ministry of Economic Affairs 6. Scope of patent application (2) The two coupling blocks can be set up and down, and there are guide sliders on them for the first, The friction plate of the second friction plate group is sleeved, and a wedge-shaped block screwed on the adjusting rod is provided between the first and second friction plate groups; at the same time, between the first and second friction plate groups and the lower seat. Can be provided with elastic elements. 6. The variable friction damper according to item 1 or 2 of the patent application, wherein the friction damper can be diagonally braced in the structure. 7. The variable friction damper according to item 1 or 2 of the patent application park, wherein the friction damper can be mounted on the structure in a straight line with a K-shaped diagonal brace. 8. The variable friction damper according to item 1 or 2 of the patent application park, wherein the friction damper can support the user in cooperation with vibration isolation. 9. The variable friction damper according to item 1 or item 2 of the patent application park, wherein the structure may be a building, a bridge, or a general civil building. 10. The variable friction damper as described in item 1 or 2 of the patent application park, wherein the structure may be an electromechanical device. U · As described in item 2 or 5 of the patent application patent The variable friction damper, wherein the wedge block and the wedge plate are made of a material with a low coefficient of friction. I2. The variable friction damper according to item 2 or item 5 of the scope of patent application, wherein the friction plate can be made of a general metal material or a synthetic metal material. 13 · Variable friction as described in item 1 or item 2 or item 5 of the patent application park 17 This paper size applies to China National Standard (CNS) a4 specification (210 X 297 mm) (Please read the back first Note: Please fill in this page again.) F Thread < 524934 Group users A8 B8 C8 D8 Patent application scope (3) Friction damper, in which the wedge-shaped block can be a single face with a single friction plate Fan Gu's variable friction damper as described in item 1 or item 2, where the actuating device can be a stepper motor combined with a controller. 1S. Variable friction as described in the patent application Fan Yuan Item 14. A damper, in which a low-feed motor can cooperate with a reduction gear implementer. 16. The variable friction damping error as described in item 1 or item 2 of the patent application, wherein the damper can be connected between two independent structures. (Please read the precautions on the back before filling out this page}, ^ 1 line & printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 18 This paper size is applicable to China National Standard (CNS) A4 (21 Ox297 mm)