Damper with elastic buffering function

Abstract

The utility model provides a damper with an elastic buffering function, and belongs to the technical field of structural energy dissipation and shock absorption. The damper comprises two lug plates, a viscous body, an auxiliary cylinder and an elastic assembly. The viscous main body is provided with a piston rod; a damping medium is stored in the viscous main body; the free end of the left side of the piston rod is connected with one lug plate. The auxiliary cylinder is positioned on one side of the right side of the viscous main body in the length direction and is connected with the viscous main body; one end of the right side of the auxiliary cylinder is connected with the other lug plate; the free end of the right side of the piston rod is located in the auxiliary cylinder. The elastic assembly is arranged at the free end of the right side of the piston rod. According to the damper, the elastic assembly is additionally arranged at the free end of the piston rod, when the damper moves overtime, the elastic assembly can provide buffering, the acting force between all components of the damper is reduced, the structural safety of the damper is guaranteed, and the service life of the damper is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of structural energy dissipation and shock absorption, in particular to a damper with elastic buffering function. Background Art

[0002] As a velocity-dependent shock-absorbing and energy-absorbing component, viscous dampers are widely used in high-rise buildings, bridges, seismic retrofitting of building structures, military industry, etc. When an earthquake occurs, the structure is subjected to external forces, and the viscous material in the viscous damper produces shear deformation, providing damping force to buffer the seismic energy, reducing the energy input of the structure, and converting the input energy into internal energy through reciprocating motion to dissipate the seismic energy, greatly alleviating the impact and damage caused by the earthquake on the building structure.

[0003] However, when the displacement caused by the earthquake exceeds the design displacement of the viscous damper, the piston rod and piston of the damper will generate a large collision force, which will affect the structure and safety performance of the viscous damper. Utility Model Content

[0004] The utility model aims to provide a damper with elastic buffering function. By adding an elastic component to the free end of a piston rod, the elastic component can provide buffering when the damper is displaced beyond the limit, thereby reducing the acting force between the various components of the damper, ensuring the structural safety of the damper and extending the service life of the damper.

[0005] The technical solution adopted by the utility model is:

[0006] A damper with elastic buffering function, comprising:

[0007] Two ear plates;

[0008] A viscous body, wherein the viscous body has a piston rod; a damping medium is stored in the viscous body; a left free end of the piston rod is connected to one of the ear plates;

[0009] A secondary cylinder, the secondary cylinder is located on the right side of the viscous main body in the length direction and is connected to the viscous main body; one end of the secondary cylinder on the right side is connected to the other ear plate; the right free end of the piston rod is located in the secondary cylinder;

[0010] An elastic component is arranged on the right free end of the piston rod.

[0011] Furthermore, the viscous body also includes:

[0012] A cylinder body, wherein step holes are provided on the inner sides of the left and right ends of the cylinder body;

[0013] Two cylinder covers, the two cylinder covers are respectively arranged in the step hole and form a contact sealing structure; the middle of the cylinder cover has a center hole; the piston rod passes through the center hole, and the left and right ends are located outside the cylinder body; the piston rod and the cylinder cover form a sliding contact sealing structure;

[0014] A piston is located between the two cylinder covers in the cylinder body and is arranged on the piston rod; there is a gap between the circumferential side wall of the piston and the corresponding circumferential inner wall of the cylinder body.

[0015] Furthermore, the viscous body also includes an end cover stopper; the end cover stopper is arranged in the step hole and presses against the cylinder cover.

[0016] Furthermore, the end cover stopper is threadedly connected to the cylinder body.

[0017] Furthermore, the auxiliary cylinder is threadedly connected to the cylinder body.

[0018] Furthermore, sealing rings are provided on the contact surface between the cylinder cover and the piston rod, and on the contact surface between the cylinder cover and the cylinder body.

[0019] Furthermore, a cylindrical flexible dust cover is provided between the fixed portion at the left end of the viscous body and the corresponding ear plate; the flexible dust cover covers the exposed piston rod portion therein.

[0020] Furthermore, an adapter is provided between the auxiliary cylinder and the corresponding ear plate.

[0021] Furthermore, the elastic component includes a steel ring and an elastomeric ring; the steel ring is arranged on the right free end of the piston rod; and the elastomeric ring is arranged on both side end faces or one side end face in the axial center direction of the steel ring.

[0022] Furthermore, the steel ring and the elastomer are bonded to each other by epoxy vulcanization to form an integrated structure.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides a damper with elastic buffering function to overcome the problems existing in the prior art. The damper with elastic buffering function is composed of a viscous body, a sub-cylinder and an elastic component. In the utility model, an elastic component is added to the free end of the piston rod. When the damper is displaced overtime, the elastic component can provide buffering, reduce the force between the various components of the damper, ensure the structural safety of the damper, and extend the service life of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 Schematic diagram of the cross-sectional structure of the damper in the embodiment.

[0027] Figure 2 Schematic diagram of the cross-sectional structure of the elastic component in the embodiment.

[0028] Figure 3 Schematic diagram of the installation structure of the damper in the embodiment.

[0029] Wherein, the accompanying drawings are marked as follows:

[0030] 100-viscous body, 200-ear plate, 300-auxiliary cylinder, 400-elastic component, 500-flexible dust cover, 600-adapter;

[0031] 110-piston rod, 120-cylinder body, 121-step hole, 130-cylinder head, 131-sealing ring, 140-end cover stopper, 150-piston;

[0032] 410-Steel ring, 420-Elastomer ring. DETAILED DESCRIPTION

[0033] 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0035] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0036] Figure 1 Schematic diagram of the cross-sectional structure of the damper in the embodiment. Figure 1 As shown in , the damper with elastic buffering function includes a cylindrical viscous body 100 and two ear plates 200. The viscous body 100 is the main seismic energy dissipation structural component of the damper. The damping medium stored therein generates shear deformation during an earthquake, provides damping force to buffer seismic energy, reduces the energy input of the structure, and converts the input energy into internal energy to dissipate seismic energy through reciprocating motion, thereby alleviating the impact and damage caused by the earthquake on the building structure. The two ear plates 200 are respectively connected to the movable end and the fixed end on the building structure such as a bridge. The viscous body 100 has a piston rod 110, and the left free end of the piston rod 110 is connected to an ear plate 200. In this embodiment, the damper with elastic buffering function also includes a cylindrical auxiliary cylinder 300. The auxiliary cylinder 300 is located on the right side of the length direction of the viscous body 100, and the left end of the auxiliary cylinder 300 is connected to the viscous body 100 to form a whole. The right free end of the piston rod 110 is located in the auxiliary cylinder 300, and the right free end of the piston rod 110 can reciprocate in the auxiliary cylinder 300. One end of the right side of the auxiliary cylinder 300 is connected to another ear plate 200. An elastic component 400 is arranged on the right free end of the piston rod 110. There is a gap between the circumferential side wall of the elastic component 400 and the circumferential inner wall of the auxiliary cylinder 300.

[0037] Figure 3 Schematic diagram of the installation structure of the damper in the embodiment. Figure 3 As shown in , when an earthquake occurs, the ear plate 200 connected to the building structure will drive the piston rod 110 to move. The damping medium stored in the viscous body 100 generates shear deformation during an earthquake, provides damping force to buffer the earthquake energy, reduces the energy input of the structure, and converts the input energy into internal energy through reciprocating motion to dissipate the earthquake energy, thereby alleviating the impact and damage caused by the earthquake to the building structure. When the damper displacement exceeds the time limit, the elastic component 400 at the right free end of the piston rod 110 can provide buffering, reduce the force between the various components of the damper, ensure the structural safety of the damper, and extend the service life of the damper.

[0038] In this embodiment, the viscous body 100 includes a cylindrical cylinder body 120. Step holes 121 are provided on the inner sides of the left and right ends of the cylinder body 120. A cylinder cover 130 is provided in cooperation with each step hole 121. The piston rod 110 extends from the center holes on the two cylinder covers 130 to the outside of the cylinder body 120, and the axial center of the piston rod 110 coincides with the axial center of the cylinder body 120. The circumferential side wall of the center hole of the cylinder cover 130 is in sliding contact and sealing with the surface of the piston rod 110. The side wall of the cylinder cover 130 is in contact and sealing with the circumferential side wall of the step hole 121. An end cover stopper 140 is also provided in each step hole 121. The end cover stopper 140 is threadedly connected to the cylinder body 120 and is pressed against the cylinder cover 130, thereby connecting the cylinder cover 130 and the cylinder body 120 as a whole. At the same time, the circumferential surface of the left end of the auxiliary cylinder 300 is threadedly connected to the circumferential side wall of the step hole 121 on the right side of the cylinder body 120, and abuts against the end cover stopper 140. A piston 150 is also provided on the piston rod 110. The piston 150 is located between the two end covers 130, and there is a small gap (for example, a gap of 1 to 2 mm) between its circumferential side wall and the corresponding circumferential side wall of the cylinder body 120. The cylinder body 120 is filled with a damping medium (for example, hydraulic oil, silicone oil, etc.) and separated by the piston 150. When an earthquake occurs, the piston 150 moves back and forth between the two cylinder covers 130 along the axial center direction of the cylinder body 120 with the piston rod 110, and the damping medium on the left and right sides of the piston 150 passes through the gap between the piston 150 and the cylinder body 120, and the input energy introduced by the piston rod 150 is converted into internal energy to dissipate the seismic energy. In this embodiment, the damping force can be controlled by controlling the size of the gap between the piston 150 and the cylinder body 120.

[0039] Furthermore, a sealing ring 131 is provided on the contact surface between the cylinder cover 130 and the piston rod 110, and on the contact surface between the cylinder cover 130 and the cylinder body 120. The number of sealing rings 131 can be one or more according to factors such as sealing requirements. In this embodiment, the sealing ring 131 can improve the sealing effect between the cylinder cover 130 and the piston rod 110, and between the cylinder cover 130 and the cylinder body 120.

[0040] In this embodiment, a cylindrical flexible dust cover 500 is provided between the fixed part at the left end of the viscous body 100, that is, the end cap block 140 at the left end of the cylinder body 120 and the corresponding ear plate 200. The flexible dust cover 500 can be made of materials such as rubber, polyurethane, and waterproof cloth, and the surface is wavy. The flexible dust cover 500 can cover the part of the piston rod 110 exposed outside the left end of the cylinder body 120 for protection. When the distance between the end cap block 140 at the left end of the cylinder body 120 and the corresponding ear plate 200 increases, the flexible dust cover 500 can be extended synchronously; when the distance between the end cap block 140 at the left end of the cylinder body 120 and the corresponding ear plate 200 decreases, the flexible dust cover 500 can be shortened synchronously. In this embodiment, the exposed piston rod 110 is protected by the flexible dust cover 500 to prevent the deposition of dust and other impurities, so as to extend the service life of the damper.

[0041] In this embodiment, an adapter 600 is provided at one end of the right side of the auxiliary cylinder 300. A portion of the adapter 600 is threadedly connected to the auxiliary cylinder 300, and another portion is threadedly connected to the ear plate 200. The auxiliary cylinder 300 is connected to the ear plate 200 through the adapter 600. In this embodiment, the adapter 600 is used for connection, which can appropriately simplify the structure of the auxiliary cylinder 300 and reduce the manufacturing cost.

[0042] Figure 2 Schematic diagram of the cross-sectional structure of the elastic component in the embodiment. Figure 2 As shown, in this embodiment, the elastic component 400 includes a steel ring 410 and an elastomer ring 420, and the outer diameters of the two are the same. The inner side wall of the steel ring 410 is threadedly connected to the circumferential surface of the right free end of the piston rod 110. The elastomer ring 420 is made of rubber, polyurethane and other materials. The elastomer ring 420 is arranged on the end faces on both sides of the axial center direction of the steel ring 410, or the elastomer ring 420 is only arranged on one end face on the axial center direction of the steel ring 410. When the damper displacement exceeds the limit during an earthquake, the elastomer ring 420 at the end of the piston rod 110 can provide a buffer, reduce the force between the various components of the damper, ensure the structural safety of the damper, and extend the service life of the damper. .

[0043] Furthermore, in order to improve the reliability of the connection between the steel ring 410 and the elastomeric ring 420 in this embodiment, the steel ring 410 and the elastomeric ring 420 are formed into an integral structure by vulcanization bonding.

Claims

1. A damper with elastic buffering function, characterized in that: include: Two ear plates; A viscous body, wherein the viscous body has a piston rod; a damping medium is stored in the viscous body; a left free end of the piston rod is connected to one of the ear plates; A secondary cylinder, the secondary cylinder is located on the right side of the viscous main body in the length direction and is connected to the viscous main body; one end of the secondary cylinder on the right side is connected to the other ear plate; the right free end of the piston rod is located in the secondary cylinder; An elastic component is arranged on the right free end of the piston rod.

2. The damper with elastic buffering function according to claim 1, characterized in that: The viscous body also includes: A cylinder body, wherein step holes are provided on the inner sides of the left and right ends of the cylinder body; Two cylinder covers, the two cylinder covers are respectively arranged in the step hole and form a contact sealing structure; the middle of the cylinder cover has a center hole; the piston rod passes through the center hole, and the left and right ends are located outside the cylinder body; the piston rod and the cylinder cover form a sliding contact sealing structure; A piston is located between the two cylinder covers in the cylinder body and is arranged on the piston rod; there is a gap between the circumferential side wall of the piston and the corresponding circumferential inner wall of the cylinder body.

3. The damper with elastic buffering function according to claim 2, characterized in that: The viscous body also includes an end cover stopper; the end cover stopper is arranged in the step hole and presses against the cylinder cover.

4. The damper with elastic buffering function according to claim 3, characterized in that: The end cover stopper is threadedly connected to the cylinder body.

5. The damper with elastic buffering function according to claim 2, characterized in that: The auxiliary cylinder is threadedly connected to the cylinder body.

6. The damper with elastic buffering function according to claim 2, characterized in that: Sealing rings are arranged on the contact surface between the cylinder cover and the piston rod, and on the contact surface between the cylinder cover and the cylinder body.

7. The damper with elastic buffering function according to claim 1, characterized in that: A cylindrical flexible dust cover is arranged between the fixed part at the left end of the viscous body and the corresponding ear plate; the flexible dust cover covers the exposed piston rod part therein.

8. The damper with elastic buffering function according to claim 1, characterized in that: An adapter is provided between the auxiliary cylinder and the corresponding ear plate.

9. The damper with elastic buffering function according to any one of claims 1 to 8, characterized in that: The elastic component includes a steel ring and an elastomeric ring; the steel ring is arranged on the right free end of the piston rod; the elastomeric ring is arranged on both side end faces or one side end face in the axial center direction of the steel ring.

10. The damper with elastic buffering function according to claim 9, characterized in that: The steel ring and the elastomer are bonded by epi-vulcanization to form an integrated structure.

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