Sensitive viscous damper

Abstract

The sensitive type viscous damper comprises a cylinder body, the cylinder body is divided into an outer main cylinder body, an inner main cylinder body and an auxiliary cylinder body, cavities of the outer main cylinder body comprise a displacement amplification cavity and a damping energy dissipation cavity, the displacement amplification cavity is further divided into a main cavity and an auxiliary cavity, the main cavity is further divided into a large-diameter cavity and a small-diameter cavity, and the auxiliary cavity is further divided into a large-diameter cavity and a small-diameter cavity. The auxiliary chamber wraps the main chamber on the outer side of the main chamber; the driving piston rod is arranged in the large-diameter cavity and fixedly connected with the driving piston and the external bearing, and the driven piston rod is arranged in the small-diameter cavity and the damping energy dissipation cavity and used for connecting the piston of the small-diameter cavity and the piston of the damping energy dissipation cavity and transmitting the displacement amplification effect. The throttling hole is formed in the damping piston of the damping energy consumption cavity and used for communicating the cavity on the left side and the cavity on the right side of the damping piston and generating damping energy consumption in the axial direction of the cylinder barrel. According to the viscous damper, input displacement can be amplified, the energy dissipation capacity is improved, and therefore the sensitivity of the viscous damper to the displacement is achieved, and the problem that the damping efficiency is low under small earthquakes is solved.

Description

Technical Field

[0001] The invention belongs to the field of energy dissipation and shock absorption devices for building structures, and in particular relates to a sensitive viscous damper. Background Art

[0002] When the lateral stiffness of a building structure is large or a small earthquake occurs, the inter-layer displacement of the structure is very small. However, the energy dissipation capacity of traditional viscous dampers is poor under small displacements, which results in that the building structure equipped with traditional viscous dampers cannot meet the shock absorption requirements in actual work. Therefore, scholars at home and abroad began to study displacement amplification viscous dampers.

[0003] Traditional displacement amplification viscous dampers achieve the amplification of inter-story displacement by setting up a displacement amplification mechanical device on the outside. Not only is the mechanical device complicated, affecting the internal aesthetics of the building, but the construction is also difficult. Summary of the invention

[0004] In order to solve the problems of the traditional displacement amplification type viscous damper, such as the complicated mechanical device, the poor appearance and the great construction difficulty, the present invention provides a sensitive viscous damper.

[0005] A sensitive viscous damper of the present invention includes a cylinder body, which is divided into an outer main cylinder body, an inner main cylinder body and an auxiliary cylinder body along the axial direction or from the outside to the inside. The chamber inside the outer main cylinder body is divided into two independent chambers along the axial direction, including a displacement amplification chamber and a damping energy dissipation chamber. The inner main cylinder body is arranged inside the outer main cylinder body, and is fixedly connected to the outer main cylinder body at one end close to the auxiliary cylinder body. The inner main cylinder body divides the displacement amplification chamber into a main chamber and an auxiliary chamber. The main chamber includes a large-diameter chamber and a small-diameter chamber. The auxiliary chamber is arranged outside the main chamber and completely wraps the main chamber. The damping energy dissipation chamber is connected to the small-diameter chamber. The internal chamber of the auxiliary cylinder body is an auxiliary cylinder barrel chamber. The auxiliary cylinder body is threadedly connected to the outer main cylinder body. The auxiliary cylinder body is closed on the side away from the outer main cylinder body and is connected to the second external joint bearing.

[0006] The input piston in the large diameter chamber, the amplifying piston in the small diameter chamber and the damping piston in the damping energy consumption chamber are sequentially distributed along the axial direction. The input piston, the amplifying piston and the damping piston can all generate relative movement of the cylinder body along the axial direction of the cylinder body.

[0007] The external joint bearing 1 is connected to the input piston through the external input piston rod, the external input piston rod is fixedly connected to the input piston, the external input piston rod extends out of the cylinder body on the side of the non-small diameter chamber, and is sealed and connected to the cylinder body, and the external input piston rod moves axially relative to the cylinder body. The two ends of the amplifying piston rod are respectively fixed to the amplifying piston and the damping piston, the amplifying piston rod extends from the small diameter chamber into the damping energy dissipation chamber, and is sealed and connected at the boundary between the small diameter chamber and the damping energy dissipation chamber, and the amplifying piston rod moves axially relative to the cylinder body.

[0008] The external input piston rod and the amplifying piston rod are both coaxial with the cylinder body.

[0009] A throttle hole for the damping medium to flow is arranged on the damping piston, and along the axial direction of the cylinder body, the chambers on both sides of the damping piston are connected through the throttle hole.

[0010] Furthermore, a first guide sleeve is provided inside the side of the secondary chamber away from the small diameter chamber. The first guide sleeve is along the axial direction of the cylinder body and is sealed and connected to the external input piston rod.

[0011] Furthermore, the first guide sleeve is also used to connect the outer main cylinder body and the inner main cylinder body. The part of the first guide sleeve extending into the large diameter chamber is provided with four fan-shaped holes of equal size to connect the sub-chamber and the large diameter chamber.

[0012] Furthermore, a second guide sleeve is provided inside the large diameter chamber near the side of the small diameter chamber. The second guide sleeve is along the axial direction of the inner main cylinder body. The second guide sleeve is fixedly connected to the large diameter chamber. The second guide sleeve is sealed to the external input piston rod. The second guide sleeve is used to stabilize the movement of the external input piston rod. The second guide sleeve is provided with four equal-sized fan-shaped holes for connecting the large diameter chamber with the small diameter chamber.

[0013] Furthermore, the inner main cylinder body is provided with four holes of equal size on the cylinder wall near one end of the damping energy-consuming chamber, so as to connect the auxiliary chamber and the small-diameter chamber.

[0014] Furthermore, a third guide sleeve is provided inside the small diameter chamber near the damping energy absorbing chamber. The third guide sleeve is in the axial direction of the cylinder body. The third guide sleeve is sealed and connected to the amplifying piston rod. The chambers on both sides of the third guide sleeve are not connected to each other, so as to separate the displacement amplifying chamber and the damping energy absorbing chamber.

[0015] Furthermore, a fourth guide sleeve is provided inside the damping energy absorbing chamber near the side of the auxiliary cylinder body. The fourth guide sleeve is in the axial direction of the cylinder body. The fourth guide sleeve is sealed and connected to the amplifying piston rod. The chambers on both sides of the fourth guide sleeve are not connected to each other, so as to separate the damping energy absorbing chamber and the auxiliary cylinder chamber.

[0016] Furthermore, the sub-chamber is used to circulate the liquid medium in the large-diameter chamber and the small-diameter chamber.

[0017] Furthermore, the ratio of the internal chamber cross-sectional areas of the large-diameter chamber and the small-diameter chamber can be flexibly adjusted according to the specific building structure characteristics, thereby adjusting the displacement and velocity amplification factors of the damping energy-absorbing component, thereby making the application range of the sensitive viscous damper wider.

[0018] Compared with the existing technology, the present invention has the following beneficial technical effects:

[0019] 1) Under the action of an earthquake, the present invention can utilize a displacement amplification unit to amplify the inter-story displacement of the building structure several times and transmit it to an energy dissipation unit of a sensitive viscous damper, thereby increasing the energy dissipation displacement and energy dissipation speed of the energy dissipation unit, thereby achieving a better viscous energy dissipation effect.

[0020] 2) The present invention can control the displacement magnification by controlling the ratio of the internal cross-sectional area of ​​the large-diameter chamber to the internal cross-sectional area of ​​the small-diameter chamber, and thus can flexibly adjust the magnification effect according to the requirements of the building structure, making the damper suitable for various building structures.

[0021] 3) The present invention can improve the energy dissipation effect of the damper and reduce the number and cost of dampers by flexibly adjusting the displacement magnification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic structural diagram of a sensitive viscous damper of the present invention.

[0023] Figure 2 The cross-sectional view AA is a view of four equally sized fan-shaped holes arranged on the portion of the first guide sleeve extending into the large diameter chamber of the present invention.

[0024] Figure 3 The cross-sectional view BB of the four equally sized fan-shaped holes provided in the second guide sleeve of the present invention.

[0025] Figure 4 This is a cross-sectional view CC of the distribution of four holes of equal size on the inner main cylinder wall of the present invention.

[0026] Numbers in the figure: 1-cylinder body, 101-external main cylinder body, 102-inner main cylinder body, 103-auxiliary cylinder body, 2-displacement amplification chamber, 3-damping energy consumption chamber, 4-main chamber, 5-auxiliary chamber, 6-large diameter chamber, 7-small diameter chamber, 8-input piston, 9-amplification piston, 10-damping piston, 11-external input piston rod, 12-amplification piston rod, 13-throttle hole, 1401-external spherical bearing one, 1402-external spherical bearing two, 15-first guide sleeve, 16-second guide sleeve, 17-third guide sleeve, 18-fourth guide sleeve, 19-auxiliary cylinder chamber. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] A sensitive viscous damper of the present invention is a sensitive viscous damper in which a displacement amplification device is arranged inside the damper. A sensitive viscous damper utilizes an internal displacement amplification unit to amplify the inter-layer displacement of a building structure several times and transmit it to an energy-consuming unit, thereby increasing the energy-consuming displacement and energy-consuming speed of the energy-consuming unit, thereby achieving a better viscous energy-consuming effect. The present invention can control the displacement amplification ratio by controlling the ratio of the internal cross-sectional area of ​​the large-diameter chamber to the internal cross-sectional area of ​​the small-diameter chamber, so that the amplification effect can be flexibly adjusted according to the requirements of the building structure, and the number and cost of dampers can be reduced. At the same time, the present invention is completely the same as the traditional viscous damper in terms of construction and installation, and a wall-mounted installation method can be adopted. It not only reduces the construction difficulty, but also does not affect the aesthetics of the interior of the building. Therefore, the present invention has the advantages of economy, simple construction, and aesthetics, that is, it can reduce the number of dampers, improve the aesthetics of the interior of the building, and reduce the construction difficulty and construction cost.

[0029] A sensitive viscous damper of the present invention is as follows Figure 1 As shown, it includes a cylinder body 1, which is divided into an outer main cylinder body 101, an inner main cylinder body 102 and an auxiliary cylinder body 103 along the axial direction or from the outside to the inside. The chamber inside the outer main cylinder body 101 is divided into two independent chambers along the axial direction, including a displacement amplification chamber 2 and a damping energy dissipation chamber 3. The inner main cylinder body 102 is arranged inside the outer main cylinder body 101, and is fixedly connected to the outer main cylinder body 101 at one end close to the auxiliary cylinder body 103. The inner main cylinder body 102 divides the displacement amplification chamber 2 into a main chamber 4 and an auxiliary chamber 5. The main chamber 4 includes a large diameter chamber 6 and a small diameter chamber 7. The auxiliary chamber 5 is arranged outside the main chamber 4, completely wrapping the main chamber 4, and the damping energy dissipation chamber 3 is connected to the small diameter chamber 7. The internal chamber of the auxiliary cylinder body 103 is the auxiliary cylinder chamber 19. The auxiliary cylinder body 103 is threadedly connected to the outer main cylinder body 101. The auxiliary cylinder body 103 is closed on the side away from the outer main cylinder body 101 and connected to the external spherical bearing 2 1402.

[0030] The input piston 8 disposed in the large diameter chamber 6, the amplifying piston 9 disposed in the small diameter chamber 7 and the damping piston 10 disposed in the damping energy dissipation chamber 3 are sequentially distributed along the axial direction. The input piston 8, the amplifying piston 9 and the damping piston 10 can all generate relative movement of the cylinder body 1 along the axial direction of the cylinder body 1.

[0031] The external joint bearing 1401 is connected to the input piston 8 through the external input piston rod 11. The external input piston rod 11 is fixed to the input piston 8. The external input piston rod 11 extends out of the cylinder body 1 on the side of the non-small diameter chamber 7 and is sealed and connected to the cylinder body 1. The external input piston rod 11 moves axially relative to the cylinder body 1. The two ends of the amplification piston rod 12 are respectively fixed to the amplification piston 9 and the damping piston 10. The amplification piston rod 12 extends from the small diameter chamber 7 into the damping energy consumption chamber 3 and is sealed and connected at the boundary between the small diameter chamber 7 and the damping energy consumption chamber 3. The amplification piston rod 12 moves axially relative to the cylinder body 1. The external input piston rod 11 and the amplification piston rod 12 are coaxial with the cylinder body 1.

[0032] The damping piston 10 is provided with a throttle hole 13 for the damping medium to flow through. Along the axial direction of the cylinder body 1 , the chambers on both sides of the damping piston 10 are connected through the throttle hole 13 .

[0033] Furthermore, a first guide sleeve 15 is provided inside the side of the secondary chamber 5 away from the small diameter chamber 7. The first guide sleeve 15 is along the axial direction of the cylinder body 1 and is sealed and connected to the external input piston rod 11. The first guide sleeve 15 is also used to connect the outer main cylinder body 101 and the inner main cylinder body 102. The first guide sleeve 15 extending into the large diameter chamber 6 is provided with four fan-shaped holes of equal size to connect the secondary chamber 5 and the large diameter chamber 6, such as Figure 2 shown.

[0034] Furthermore, a second guide sleeve 16 is provided inside the large diameter chamber 6 near the side of the small diameter chamber 7. The second guide sleeve 16 is axially arranged along the inner main cylinder body 102. The second guide sleeve 16 is fixedly connected to the large diameter chamber 6. The second guide sleeve 16 is sealedly connected to the external input piston rod 11. The second guide sleeve 16 is used to stabilize the movement of the external input piston rod 11. The second guide sleeve 16 is provided with four fan-shaped holes of equal size to connect the large diameter chamber 6 with the small diameter chamber 7. Figure 3 shown.

[0035] Further, such as Figure 4 As shown, the inner main cylinder body 102 is provided with four holes of equal size on the cylinder wall near one end of the damping energy dissipation chamber 3 for connecting the auxiliary chamber 5 and the small diameter chamber 7.

[0036] Furthermore, a third guide sleeve 17 is provided inside the small diameter chamber 7 near the damping energy absorbing chamber 3. The third guide sleeve 17 is axially arranged in the cylinder body 1. The third guide sleeve 17 is sealedly connected to the amplifying piston rod 12. The chambers on both sides of the third guide sleeve 17 are not connected to each other, so as to separate the displacement amplifying chamber 2 and the damping energy absorbing chamber 3.

[0037] Furthermore, a fourth guide sleeve 18 is provided inside the damping energy absorbing chamber 3 near the side of the auxiliary cylinder body 103. The fourth guide sleeve 18 is axially arranged in the cylinder body 1. The fourth guide sleeve 18 is sealedly connected to the amplifying piston rod 12. The chambers on both sides of the fourth guide sleeve 18 are not connected to each other, so as to separate the damping energy absorbing chamber 3 and the auxiliary cylinder chamber 19.

[0038] Furthermore, the sub-chamber 5 is used to circulate the liquid medium in the large-diameter chamber 6 and the small-diameter chamber 7 .

[0039] Furthermore, the ratio of the internal chamber cross-sectional areas of the large-diameter chamber 6 and the small-diameter chamber 7 can be flexibly adjusted according to the specific building structure characteristics, thereby adjusting the displacement and velocity amplification multiples of the damping energy-absorbing component, thereby making the sensitive viscous damper more widely applicable.

[0040] Example:

[0041] In order to conveniently describe the connection relationship between the components, Figure 1 The inner center of the external joint bearing 1401 is the origin, the axial direction of the damper is the x-axis, and the direction from the external joint bearing 1401 to the external joint bearing 2 1402 is regarded as the positive direction of the x-axis. At the same time, it is stipulated that when the x-axis coordinate value corresponding to one end of a component is a relatively small value, it is the left end, and when the x-axis coordinate value corresponding to the other end is a relatively large value, it is the right end.

[0042] like Figure 1 As shown, the cylinder body 1 includes an outer master cylinder body 101, an inner master cylinder body 102 and an auxiliary cylinder body 103, the inner master cylinder body 102 is located inside the outer master cylinder body 101, and the middle part of the outer master cylinder body 101 and the right end of the inner master cylinder body 102 are internally sealed and connected at the cross-section contraction of the outer master cylinder body 101, the left end of the outer master cylinder body 101 and the left end of the inner master cylinder body 102 are connected through a first guide sleeve 15, the right end of the outer master cylinder body 101 and the left end of the auxiliary cylinder body 103 are threadedly connected, and the left and right ends of the outer master cylinder body 101 are closed by an end cover, thereby the outer master cylinder body 101, the inner master cylinder body 102 and the auxiliary cylinder body 103 are connected. 3 forms a closed cylinder 1; the stepped annular chamber between the cylinder wall of the outer main cylinder 101 and the cylinder wall of the inner main cylinder 102 is the secondary chamber 5, and the internal chamber of the inner main cylinder 102 is a large-diameter chamber 6 and a small-diameter chamber 7 in sequence along the positive direction of the x-axis, so that the large-diameter chamber 6 and the small-diameter chamber 7 constitute the main chamber 4, and the main chamber 4 and the secondary chamber 5 together form a closed displacement amplification chamber 2; the chamber between the right end of the inner main cylinder 102 and the right end of the outer main cylinder 101 is the damping energy dissipation chamber 3; wherein, the displacement amplification chamber 2 and the damping energy dissipation chamber 3 are two chambers with different functions and are not interconnected.

[0043] like Figure 1As shown, specifically, the left and right ends of the displacement amplification chamber 2 are respectively closed by the first guide sleeve 15 and the third guide sleeve 17, and the left and right ends of the damping energy dissipation chamber 3 are respectively closed by the third guide sleeve 17 and the fourth guide sleeve 18; the circulation of liquid is achieved between the main chamber and the sub-chamber through the oil guide hole on the first guide sleeve and the oil guide hole on the wall of the right end of the inner main cylinder body 102.

[0044] like Figure 1 As shown, an input piston 8 is provided in the large diameter chamber 6, an amplification piston 9 is provided in the small diameter chamber, and a damping piston 10 is provided in the damping energy dissipation chamber; wherein, a sealing ring is provided between the input piston 8 and the wall of the inner master cylinder body 102, a sealing ring is provided between the amplification piston 9 and the wall of the inner master cylinder body 102, and a sealing ring is provided between the damping piston 10 and the wall of the outer master cylinder body 101.

[0045] like Figure 1 As shown, specifically, the input piston 8 and the amplifying piston 9 can both move axially relative to the inner main cylinder body 102, and the damping piston 10 can move axially relative to the outer main cylinder body 101; in the displacement amplifying chamber 2, the input piston 8 and the amplifying piston 9 separate the displacement amplifying chamber 2 into two closed spaces a and b, which is the closed space b, the space between the input piston 8 and the amplifying piston 9 is the closed space a, and the space on the left side of the input piston 8, the space on the right side of the amplifying piston 9 and the sub-chamber 5 together constitute the closed space b.

[0046] like Figure 1 As shown, the external input piston rod 11 is arranged in the large diameter chamber 6 and is coaxial with the cylinder body 1. The external input piston rod 11 is fixedly connected to the input piston 8. The external input piston rod 11 passes through the left side of the cylinder body 1 and is sealed with the cylinder body 1. The external input piston rod 11 can move axially relative to the cylinder body 1; the amplifying piston rod 12 is arranged between the small diameter chamber 7 and the damping energy consuming chamber 3, and is used to connect the amplifying piston 9 and the damping piston 10. The amplifying piston rod 12 is coaxial with the cylinder body 1, the left end of the amplifying piston rod 12 is fixedly connected to the amplifying piston 9, the middle part of the amplifying piston rod 12 is sealed with the third guide sleeve 17, the middle part of the amplifying piston rod 12 is fixedly connected to the damping piston 10, the right end of the amplifying piston rod 12 passes through the right end of the damping energy consuming chamber 3, extends into the secondary cylinder chamber 19 of the secondary cylinder body 103, and is sealed with the fourth guide sleeve 18, and the amplifying piston rod 12 can move axially relative to the cylinder body 1.

[0047] like Figure 1 As shown, the external spherical bearing 1 1401 is connected to the left end of the external input piston rod 11 through a thread, and the external spherical bearing 2 1402 is connected to the right end of the auxiliary cylinder body through a thread, which is convenient for the installation of the damper.

[0048] The implementation principle of the present invention is:

[0049] Under the action of external excitation, the building structure produces inter-layer displacement, which acts on the external input piston rod 11. The external input piston rod 11 moves relative to the cylinder body 1, and drives the input piston 8 to move relative to the cylinder body 1. The movement of the input piston 8 forces the medium pressure of the closed space a to increase. The medium pressure of the closed space a causes the amplifying piston 9 to displace. The amplifying piston 9 pushes the amplifying piston rod 12, and the amplifying piston rod 12 transmits the displacement to the damping piston. Since the diameter of the large-diameter chamber is larger than that of the small-diameter chamber, the movement distance of the input piston 8 is smaller than the movement distance of the amplifying piston 9, resulting in an increase in the displacement of the damping piston 10, thereby realizing the amplification of the input displacement. The amplification of the input displacement forces the damping medium in the damping energy consumption chamber to flow through the throttling hole 13 at an increased speed, resulting in the damper generating a greater damping force and consuming more energy, thereby improving the shock absorption efficiency and reducing the number of dampers arranged.

Claims

1. A sensitive viscous damper, characterized in that: The invention comprises a cylinder body (1), wherein the cylinder body (1) is divided into an outer main cylinder body (101), an inner main cylinder body (102) and an auxiliary cylinder body (103) along the axial direction or from the outside to the inside; the chamber inside the outer main cylinder body (101) is divided into two independent chambers along the axial direction, including a displacement amplification chamber (2) and a damping energy dissipation chamber (3); the inner main cylinder body (102) is arranged inside the outer main cylinder body (101) and is fixedly connected to the outer main cylinder body (101) at one end close to the auxiliary cylinder body (103); the inner main cylinder body (102) divides the displacement amplification chamber (2) into a main chamber (4) and a secondary chamber (5), the main chamber (4) includes a large diameter chamber (6) and a small diameter chamber (7), the secondary chamber (5) is arranged outside the main chamber (4) and completely wraps the main chamber (4), and the damping energy dissipation chamber (3) is close to the small diameter chamber (7); the internal chamber of the secondary cylinder body (103) is a secondary cylinder barrel chamber (19), the secondary cylinder body (103) is threadedly connected to the outer main cylinder body (101), and the secondary cylinder body (103) is closed on the side away from the outer main cylinder body (101) and is connected to the external joint bearing 2 (1402); An input piston (8) disposed in the large-diameter chamber (6), an amplifying piston (9) disposed in the small-diameter chamber (7), and a damping piston (10) disposed in the damping energy-consuming chamber (3) are sequentially distributed along the axial direction; the input piston (8), the amplifying piston (9), and the damping piston (10) can all generate relative motion to the cylinder body (1) along the axial direction of the cylinder body (1); The external joint bearing 1 (1401) is connected to the input piston (8) via the external input piston rod (11). The external input piston rod (11) is fixedly connected to the input piston (8). The external input piston rod (11) extends out of the cylinder body (1) on the side of the non-small diameter chamber (7) and is sealedly connected to the cylinder body (1). The external input piston rod (11) moves axially relative to the cylinder body (1); the two ends of the amplifying piston rod (12) are respectively fixedly connected to the amplifying piston (9) and the damping piston (10). The amplifying piston rod (12) extends from the small diameter chamber (7) into the damping energy consuming chamber (3) and is sealedly connected at the boundary between the small diameter chamber (7) and the damping energy consuming chamber (3). The amplifying piston rod (12) moves axially relative to the cylinder body (1); The external input piston rod (11) and the amplifying piston rod (12) are both coaxial with the cylinder body (1); The damping piston (10) is provided with a throttle hole (13) for the damping medium to flow through, and along the axial direction of the cylinder body (1), the chambers on both sides of the damping piston (10) are connected through the throttle hole (13).

2. A sensitive viscous damper according to claim 1, characterized in that: A first guide sleeve (15) is provided inside the side of the secondary chamber (5) away from the small diameter chamber (7). The first guide sleeve (15) is axially arranged along the cylinder body (1). The first guide sleeve (15) is sealedly connected to an external input piston rod (11).

3. A sensitive viscous damper according to claim 2, characterized in that: The first guide sleeve (15) is also used to connect the outer main cylinder body (101) and the inner main cylinder body (102). The portion of the first guide sleeve (15) extending into the large-diameter chamber (6) is provided with four fan-shaped holes of equal size for connecting the secondary chamber (5) and the large-diameter chamber (6).

4. A sensitive viscous damper according to claim 1, characterized in that: The large diameter chamber (6) is provided with a second guide sleeve (16) inside the side close to the small diameter chamber (7). The second guide sleeve (16) is axially arranged along the inner main cylinder body (102). The second guide sleeve (16) is fixedly connected to the large diameter chamber (6). The second guide sleeve (16) is sealedly connected to the external input piston rod (11). The second guide sleeve (16) is used to stabilize the movement of the external input piston rod (11). The second guide sleeve (16) is provided with four fan-shaped holes of equal size for connecting the large diameter chamber (6) and the small diameter chamber (7).

5. A sensitive viscous damper according to claim 1, characterized in that: The inner main cylinder (102) is provided with four holes of equal size on the cylinder wall near one end of the damping energy-consuming chamber (3) for connecting the auxiliary chamber (5) and the small-diameter chamber (7).

6. A sensitive viscous damper according to claim 1, characterized in that: A third guide sleeve (17) is provided inside the small diameter chamber (7) on a side close to the damping energy dissipation chamber (3). The third guide sleeve (17) is axially arranged in the cylinder body (1). The third guide sleeve (17) is sealedly connected to the amplifying piston rod (12). The chambers on both sides of the third guide sleeve (17) are not connected to each other, so as to separate the displacement amplifying chamber (2) and the damping energy dissipation chamber (3).

7. A sensitive viscous damper according to claim 1, characterized in that: The damping energy dissipation chamber (3) is provided with a fourth guide sleeve (18) at the inner side close to the auxiliary cylinder body (103). The fourth guide sleeve (18) is axially arranged in the cylinder body (1). The fourth guide sleeve (18) is sealedly connected to the amplifying piston rod (12). The chambers on both sides of the fourth guide sleeve (18) are not connected to each other, so as to separate the damping energy dissipation chamber (3) and the auxiliary cylinder chamber (19).

8. The sensitive viscous damper according to claim 1, characterized in that: The sub-chamber (5) is used to circulate the liquid medium in the large-diameter chamber (6) and the small-diameter chamber (7).

9. A sensitive viscous damper according to claim 1, characterized in that: The ratio of the internal chamber cross-sectional areas of the large-diameter chamber (6) and the small-diameter chamber (7) can be flexibly adjusted according to the specific building structure characteristics.

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