Friction damper device

Abstract

The present invention relates to a friction damper device, comprising: an outer cylinder assembly, wherein the outer cylinder assembly is provided with a rotating cavity and a rotating hole, wherein the rotating hole is connected to the rotating cavity; a first rotating member, wherein the first rotating member is arranged on the inner wall of the rotating cavity; a linear rotating assembly, wherein the linear rotating assembly comprises a screw, an inner cylinder and a nut, wherein the inner cylinder is connected to the nut, the screw is threadedly connected to the nut, and the inner cylinder rotates in cooperation with the first rotating member; and a friction assembly, wherein the friction assembly is arranged on the inner wall of the rotating cavity, and the friction assembly frictionally cooperates with the inner cylinder. This friction damper device converts the linear displacement of the screw into the rotation of the nut, which is beneficial to increasing the allowable stroke of the energy consumption process. In addition, on the one hand, friction is generated when the nut is threadedly connected to the screw, consuming part of the kinetic energy, and at the same time, the friction assembly damps the rotation of the inner cylinder, thereby effectively improving the energy consumption efficiency of the friction damper device.

Description

Technical Field

[0001] The present invention relates to the technical field of structural engineering, and in particular to a friction damper device. Background Art

[0002] Driven by economic prosperity, the scale and technical level of building and bridge construction have increased significantly. However, natural disasters such as typhoons and earthquakes often cause building structures to suffer damage, resulting in personal and property losses. Consequently, an increasing number of engineering structures are employing energy dissipation and vibration reduction devices to protect against the impact of dynamic loads such as earthquakes and typhoons.

[0003] In traditional technology, dampers are often used to dissipate the dynamic loads of large buildings. The energy dissipation mechanism of friction dampers is that when two friction contact surfaces slide relative to each other, a resistance in the opposite direction of displacement will always be generated to achieve friction energy dissipation. The friction damper is a displacement-related damper that exhibits good Coulomb damping characteristics and has the advantages of simple structure and full hysteresis curve. However, common friction dampers at this stage have problems such as small displacement stroke and low energy dissipation efficiency. The small displacement stroke will limit the application of friction dampers in engineering structures, such as longitudinal vibration control of large-span bridges with large temperature deformation; and in order to consume more energy, the number of friction dampers has to be increased or the volume has to be increased, which will also increase the difficulty of their application. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the existing technology and provide a friction damper device that can effectively increase the displacement stroke and improve energy consumption efficiency.

[0005] The technical solution is as follows: A friction damper device comprises: an outer cylinder assembly, the outer cylinder assembly is provided with a rotating cavity and a rotating hole, the rotating hole is connected to the rotating cavity; a first rotating member, the first rotating member is arranged on the inner wall of the rotating cavity; a linear rotating assembly, the linear rotating assembly comprises a screw rod, an inner cylinder and a nut, the inner cylinder is connected to the transmission, the screw rod is threadedly connected to the nut, and the inner cylinder is rotationally matched with the first rotating member; a friction assembly; the friction assembly is arranged on the inner wall of the rotating cavity, and the friction assembly is frictionally matched with the inner cylinder.

[0006] During use, the friction damper device described above connects one end of the outer cylinder and one end of the screw to the two ends of the target structure that experience relative displacement, with one end of the outer cylinder serving as the relatively stationary end and one end of the screw serving as the displacement end. When the displacement end is displaced under the action of an external dynamic load, it drives the screw to displace. The nut is threadedly connected to the screw. Since the nut is connected to the inner cylinder, the inner cylinder rotates in conjunction with the first rotating member, maintaining the relative position of the nut. The linear displacement of the screw is converted into rotation of the nut, driving the rotation of the inner cylinder. Because the inner cylinder extends into the rotating chamber and a friction assembly is provided on the inner wall of the rotating chamber, sliding friction is generated between the inner cylinder and the friction assembly during rotation, thereby dissipating energy from the rotation of the inner cylinder. This friction damper device converts the linear displacement of the screw into rotation of the nut, which helps increase the permissible stroke of the energy dissipation process. Furthermore, the friction assembly damps the rotation of the inner cylinder, effectively improving the energy dissipation efficiency of the friction damper device.

[0007] In one embodiment, the outer cylinder assembly includes an outer cylinder and a bearing cylinder, the outer cylinder is connected to the bearing cylinder, the outer cylinder is provided with a first split cavity, the bearing cylinder is provided with a second split cavity, the rotating hole is connected with the first split cavity through the second split cavity, and the first rotating member is arranged on the inner wall of the second split cavity.

[0008] In one embodiment, the friction damper device further includes a second rotating member, which is disposed on an inner wall of the second split cavity, and the nut is rotationally engaged with the second rotating member.

[0009] In one embodiment, the outer cylinder is provided with a first protrusion, the nut is provided with a second protrusion, the first protrusion is connected to the second protrusion, the first rotating member is rotationally engaged with the first protrusion, and the second protrusion is rotationally engaged with the second rotating member.

[0010] In one embodiment, the outer cylinder assembly further includes a third rotating member, which is disposed on the inner wall of the first sub-chamber, and the inner cylinder is rotationally engaged with the third rotating member.

[0011] In one embodiment, the friction assembly includes a friction member and a fastener, wherein the friction member is circumferentially arranged between the inner wall of the rotating chamber and the outer wall of the inner cylinder along the inner wall of the rotating chamber, and the fastener is in contact with the friction member, and the fastener drives the friction member to frictionally engage with the inner cylinder.

[0012] In one embodiment, the outer cylinder assembly is further provided with an adjustment port, the adjustment port is communicated with the rotation chamber, and the fastener passes through the adjustment port and is in contact with the friction member.

[0013] In one embodiment, the friction assembly further includes an adjusting bolt, the fastener is connected to the adjusting bolt, and the adjusting bolt is threadedly connected to the outer cylinder.

[0014] In one embodiment, there are more than two adjusting bolts, and the more than two adjusting bolts are all connected to the fastener.

[0015] In one embodiment, the outer cylinder is provided with a first end at one end away from the rotating hole, and the screw rod is provided with a second end at one end away from the first end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic diagram of the internal structure of a friction damper device according to one embodiment;

[0019] Figure 2 is a schematic diagram of the external structure of a friction damper device according to one embodiment;

[0020] Figure 3 Schematic diagram of the structure of the friction damper device described in one embodiment from another perspective.

[0021] Description of reference numerals:

[0022] 100. Friction damper device; 110. Outer cylinder assembly; 111. Rotating cavity; 1111. First sub-cavity; 1112. Second sub-cavity; 112. Rotating hole; 113. Outer cylinder; 1131. First protrusion; 114. Bearing cylinder; 115. Third rotating member; 116. Adjusting port; 117. First end; 120. First rotating member; 121. Second rotating member; 130. Linear rotating assembly; 131. Screw; 132. Inner cylinder; 133. Nut; 1331. Second protrusion; 134. Second end; 140. Friction assembly; 141. Friction member; 142. Fastener; 143. Adjusting bolt. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0029] In one embodiment, see Figure 1 、 Figure 2 and Figure 3 One embodiment of the present invention provides a friction damper device 100, comprising: an outer cylinder assembly 110, a first rotating member 120, a linear rotating assembly 130, and a friction assembly 140. The outer cylinder assembly 110 is provided with a rotating chamber 111 and a rotating hole 112, with the rotating hole 112 communicating with the rotating chamber 111; the first rotating member 120 is disposed on the inner wall of the rotating chamber 111; the linear rotating assembly 130 comprises a screw 131, an inner cylinder 132, and a nut 133, wherein the inner cylinder 132 is connected to the nut 133, the screw 131 and the nut 133 are in transmission connection, and the inner cylinder 132 rotates in engagement with the first rotating member 120; the friction assembly 140 is disposed on the inner wall of the rotating chamber 111, and frictionally engages with the inner cylinder 132.

[0030] During use, the friction damper device 100 is configured such that one end of the outer cylinder 113 and one end of the screw 131 are connected to two ends of the target structure that experience relative displacement. The outer cylinder 113 serves as the relatively stationary end, while the screw 131 serves as the displacement end. When the displacement end is displaced under an external dynamic load, this causes the screw 131 to also displace. The nut 133 is threadedly connected to the screw 131. Since the nut 133 is connected to the inner cylinder 132, the inner cylinder 132 rotates in conjunction with the first rotating member 120, maintaining the relative position of the nut 133. This converts the linear displacement of the screw 131 into rotation of the nut 133, which in turn drives the inner cylinder 132 to rotate. Because the inner cylinder 132 extends into the rotating chamber 111 and is provided with a friction assembly 140 on the inner wall of the rotating chamber 111, sliding friction is generated between the inner cylinder 132 and the friction assembly 140 during rotation, dissipating energy from the rotation of the inner cylinder 132. The friction damper device 100 converts the linear displacement of the screw 131 into the rotation of the nut 133, which helps increase the allowable stroke of the energy dissipation process. In addition, the friction assembly 140 damps the rotation of the inner cylinder 132, thereby effectively improving the energy dissipation efficiency of the friction damper device 100.

[0031] The screw rod 131 is connected to the nut 133 in a transmission manner to form a ball screw structure, which converts the linear motion of the screw rod 131 into the rotational motion of the nut.

[0032] It should be noted that the frictional cooperation between the friction component 140 and the inner cylinder 132 should be understood as the friction component 140 and the inner cylinder 132 being in conflict, and when the inner cylinder 132 rotates, the friction component 140 and the inner cylinder 132 form sliding friction, providing friction damping force to the inner cylinder 132.

[0033] Optionally, the first rotating member 120 may be disposed on the inner wall of the rotating chamber 111 by welding, snap connection, interference fit, screw connection, riveting or other connection methods.

[0034] Specifically, see Figure 1 The outer cylinder assembly 110 includes an outer cylinder 113 and a bearing cylinder 114. The outer cylinder 113 is connected to the bearing cylinder 114. The outer cylinder 113 is provided with a first sub-cavity 1111, and the bearing cylinder 114 is provided with a second sub-cavity 1112. The rotating hole 112 is connected to the first sub-cavity 1111 through the second sub-cavity 1112. The first rotating member 120 is provided on the inner wall of the second sub-cavity 1112. For further information, please refer to Figure 2 The connection between outer cylinder 113 and bearing cylinder 114 forms a step, on which first rotating member 120 is positioned. This facilitates installation of outer cylinder assembly 110, facilitating the installation of first rotating member 120 and other components within first and second sub-cavities 1111, 1112. Furthermore, it improves the structural stability of outer cylinder assembly 110.

[0035] Optionally, the outer cylinder 113 and the bearing cylinder 114 may be connected by bolt connection, threaded connection, bonding, welding, riveting, snap connection or other connection methods.

[0036] Specifically, see Figure 1 The outer cylinder 113 and the bearing cylinder 114 are connected by welding. This helps improve the connection stability between the outer cylinder 113 and the bearing cylinder 114, thereby improving the overall quality of the outer cylinder assembly 110. This embodiment only provides a specific connection method between the outer cylinder 113 and the bearing cylinder 114, but is not limited to this.

[0037] Optionally, the first rotating member 120 may be a thrust bearing, a ball, a roller or other rotating devices.

[0038] Specifically, see Figure 1, the first rotating member 120 is a thrust bearing. This configuration not only improves the structural stability of the first rotating member 120, ensuring its support for the inner cylinder 132, but also enhances the overall operational stability of the friction damper device 100. Furthermore, it helps ensure smooth rotation of the inner cylinder 132 and nut 133, thereby improving the overall operational quality of the friction damper device 100. This embodiment provides only one specific implementation of the first rotating member 120, but is not intended to be limiting.

[0039] In one embodiment, see Figure 1 The friction damper device 100 further includes a second rotating member 121. The second rotating member 121 is disposed on the inner wall of the second split cavity 1112, and the nut 133 rotates in conjunction with the second rotating member 121. Figure 1 The second rotating member 121 is disposed on the inner wall of the rotating hole 112. This further supports the inner cylinder 132 and the nut 133, preventing axial displacement of the nut 133 during rotation and improving operational reliability. It also further facilitates the rotation of the nut 133 and improves the smoothness of rotation of the nut 133 and the outer cylinder 113.

[0040] Optionally, the first rotating member 120 may be a thrust bearing, a ball, a roller or other rotating devices.

[0041] Specifically, see Figure 1 , the second rotating member 121 is a thrust bearing. This configuration not only improves the structural stability of the first rotating member 120, but also ensures the second rotating member 121 supports the inner cylinder 132, thereby enhancing the overall operational stability of the friction damper device 100. Furthermore, it helps ensure smooth rotation of the inner cylinder 132 and nut 133, thereby improving the overall operational quality of the friction damper device 100. This embodiment provides only one specific implementation of the second rotating member 121, but is not intended to be limiting.

[0042] In one embodiment, see Figure 1 The outer cylinder 113 is provided with a first protrusion 1131, and the nut 133 is provided with a second protrusion 1331. The first protrusion 1131 and the second protrusion 1331 are connected. The first rotating member 120 is rotationally engaged with the first protrusion 1131, and the second protrusion 1331 is rotationally engaged with the second rotating member 121. In this way, the first protrusion 1131 and the second protrusion 1331 are sandwiched between the first rotating member 120 and the second rotating member 121. The first rotating member 120 supports the outer cylinder 113, and the second rotating member 121 supports the nut 133. This helps prevent axial movement of the outer cylinder 113 and the nut 133, thereby increasing the service life of the friction damper device 100.

[0043] In one embodiment, see Figure 1 The outer cylinder assembly 110 further includes a third rotating member 115, which is disposed on the inner wall of the first sub-chamber. The inner cylinder 132 rotates in conjunction with the third rotating member 115. As a result, a portion of the inner cylinder 132 rotates within the first sub-chamber 1111. The rotational cooperation between the third rotating member 115 and the inner cylinder 132 not only provides support for the inner cylinder 132, but also ensures concentric rotation of the inner cylinder 132 and the outer cylinder 113, thereby improving the stability of friction output. Furthermore, the rotational cooperation between the third rotating member 115 and the inner cylinder 132 facilitates smooth rotation of the inner cylinder 132, thereby reducing friction between components and increasing the service life of the friction damper device 100.

[0044] Further, see Figure 1 There are two or more third rotating members 115, which are spaced apart along the length of the outer cylinder 113. Specifically, in this embodiment, there are two third rotating members 115, but this is not limiting. This further enhances the supporting and rotating effect of the third rotating members 115 on the inner cylinder 132, thereby reducing friction between components and extending the service life of the friction damper device 100.

[0045] In order to further understand and explain the length direction of the outer cylinder 113, Figure 1 For example, the length direction of the outer cylinder 113 is Figure 1 The direction indicated by any arrow on the center line S1.

[0046] Optionally, the third rotating member 115 may be a radial bearing, a ball, a roller or other rotating devices.

[0047] Specifically, see Figure 1 , the third rotating member 115 is a radial bearing. This configuration not only improves the structural stability of the third rotating member 115, ensuring its support for the inner cylinder 132, but also enhances the overall operational stability of the friction damper device 100. Furthermore, it helps ensure smooth rotation of the inner cylinder 132 and nut 133, thereby improving the overall operational quality of the friction damper device 100. This embodiment provides only one specific implementation of the third rotating member 115, but is not intended to be limiting.

[0048] In one embodiment, see Figure 1The friction assembly 140 includes a friction member 141 and a fastener 142. The friction member 141 is arranged along the inner wall of the rotating chamber 111 and between the inner wall of the rotating chamber 111 and the outer wall of the inner cylinder 132 along the circumferential direction of the inner wall of the rotating chamber 111. The fastener 142 and the friction member 141 are in contact with each other, and the fastener 142 drives the friction member 141 to frictionally cooperate with the inner cylinder 132. In this way, the friction member 141 is clamped between the fastener 142 and the inner cylinder 132. When the fastener 142 approaches the inner cylinder 132 under the action of an external force, the greater the pressure on the friction member 141, the greater the friction damping force of the friction member 141 on the outer cylinder 113. The damping force F generated at both ends of the friction damper device 100 is,

[0049]

[0050] Where, L is the lead of the screw 131, η is the reverse transmission efficiency of the screw 131, T is the torque generated by the friction damping force between the friction member 141 and the fastener 142, and F s is the friction damping force between the friction member 141 and the fastener 142, R is the radius of the contact surface between the friction member 141 and the fastener 142. 2πRηL is the amplification factor of the friction damping force.

[0051] The amplification coefficient between the inner cylinder 132 and the friction member 141 is 2πRηL, which effectively increases the damping force and improves the energy consumption efficiency.

[0052] Alternatively, the fastener 142 may be a fastening plate, a fastening column, a fastening bolt, or other fastening devices.

[0053] Specifically, see Figure 1 and Figure 2 The fastener 142 is a fastening pressure plate. This is beneficial to increasing the contact area between the fastener 142 and the friction member 141, thereby increasing the amplification coefficient of the friction damping force and improving energy consumption efficiency.

[0054] In one embodiment, see Figure 1 and Figure 2 The outer cylinder assembly 110 also has an adjustment port 116. This port communicates with the rotating chamber 111, through which the fastener 142 passes to engage with the friction member 141. This allows the pressure between the fastener 142 and the friction member 141 to be adjusted from outside the outer cylinder 113, thereby conveniently adjusting the damper's limiting sliding force, facilitating practical engineering applications.

[0055] In one embodiment, there are two or more regulating ports 116 (not shown in the figure). The two or more regulating ports 116 are arranged at intervals in the circumferential direction of the outer cylinder 113 .

[0056] Furthermore, there are two or more fasteners 142 (not shown), and the fasteners 142 are arranged in a one-to-one correspondence with the adjustment ports 116. Thus, since the friction member 141 is arranged circumferentially along the inner wall of the first sub-cavity 1111, the two or more adjustment ports 116 and the fasteners 142 act on the friction member 141, thereby providing a friction damping force to the inner cylinder 132, resulting in a more uniform force distribution and improved damping efficiency.

[0057] Optionally, the fastener 142 may be adjusted manually, electrically, automatically, or in other ways.

[0058] Specifically, see Figure 1 Friction assembly 140 further includes an adjustment bolt 143, to which fastener 142 is connected, and which is threadedly engaged with outer cylinder 113. Manual operation of adjustment bolt 143 adjusts the pressure between fastener 142 and friction member 141, thereby conveniently adjusting the damper's limiting sliding force, facilitating practical engineering applications. This embodiment provides only one specific method for adjusting fastener 142, but is not intended to be limiting.

[0059] Further, see Figure 2 There are more than two adjusting bolts 143, and the two or more adjusting bolts 143 are all connected to the fastener 142. This is conducive to improving the adjustment convenience and stability of the fastener 142, evenly distributing the pressure, avoiding deformation of the adjusting member, and thus improving the overall quality and user experience of the friction damper device 100.

[0060] In one embodiment, see Figure 2 The outer cylinder 113 has a first end 117 at one end away from the rotation hole 112, and the screw rod 131 has a second end 134 at one end away from the first end 117. This facilitates connection between the outer cylinder 113 and the screw rod 131 at both ends where relative displacement occurs with the target structure, improving the overall quality and user experience of the friction damper device 100.

[0061] Optionally, the first end 117 and the outer cylinder 113 may be connected by bolt connection, welding, snap connection, threaded connection or other connection methods.

[0062] Specifically, see Figure 1 and Figure 2 The first end 117 is connected to the outer cylinder 113 by welding. This helps to improve the connection stability between the first end 117 and the outer cylinder 113, thereby improving the overall structural stability of the outer cylinder assembly 110 and increasing the service life of the friction damper device.

[0063] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A friction damper device, characterized in that: The friction damper device comprises: an outer cylinder assembly, wherein the outer cylinder assembly is provided with a rotating cavity and a rotating hole, wherein the rotating hole is communicated with the rotating cavity; a first rotating member disposed on an inner wall of the rotating chamber; A linear rotating assembly, comprising a screw, an inner cylinder and a nut, wherein the inner cylinder is connected to the nut, the screw is in driving connection with the nut, and the inner cylinder is in rotational engagement with the first rotating member; A friction assembly; the friction assembly is arranged on the inner wall of the rotating chamber, and the friction assembly is frictionally engaged with the inner cylinder; the friction assembly includes a friction member and a fastener, the friction member is circumferentially arranged between the inner wall of the rotating chamber and the outer wall of the inner cylinder along the inner wall of the rotating chamber, the fastener is in contact with the friction member, and the fastener drives the friction member to frictionally engage with the inner cylinder; The outer cylinder assembly includes an outer cylinder and a bearing cylinder, the outer cylinder is connected to the bearing cylinder, the outer cylinder is provided with a first split cavity, the bearing cylinder is provided with a second split cavity, the rotating hole is connected with the first split cavity through the second split cavity, and the first rotating member is provided on the inner wall of the second split cavity; The friction damper device further includes a second rotating member, the second rotating member is provided on the inner wall of the second split cavity, and the nut is rotationally engaged with the second rotating member; The outer cylinder is provided with a first protrusion, the nut is provided with a second protrusion, the first protrusion is connected to the second protrusion, the first rotating member is rotationally engaged with the first protrusion, and the second protrusion is rotationally engaged with the second rotating member; The outer cylinder assembly is further provided with an adjustment port, the adjustment port being in communication with the rotating chamber, and the fastener passes through the adjustment port and engages with the friction member; The friction assembly further includes an adjusting bolt, the fastener is connected to the adjusting bolt, and the adjusting bolt is threadedly connected to the outer cylinder; There are more than two adjusting bolts, and the more than two adjusting bolts are all connected to the fastener.

2. The friction damper device according to claim 1, characterized in that The outer cylinder assembly further includes a third rotating member, which is disposed on the inner wall of the first split cavity. The inner cylinder is rotatably matched with the third rotating member.

3. The friction damper device according to any one of claims 1 to 2, characterized in that: The outer cylinder is provided with a first end at one end away from the rotating hole, and the screw rod is provided with a second end at one end away from the first end.

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