CN111827760B - Self-resetting wide-frequency-domain hybrid energy consumption damper - Google Patents
Self-resetting wide-frequency-domain hybrid energy consumption damper Download PDFInfo
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- CN111827760B CN111827760B CN202010571437.6A CN202010571437A CN111827760B CN 111827760 B CN111827760 B CN 111827760B CN 202010571437 A CN202010571437 A CN 202010571437A CN 111827760 B CN111827760 B CN 111827760B
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- E—FIXED CONSTRUCTIONS
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- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
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Abstract
The invention relates to a self-reset wide frequency domain hybrid energy consumption damper, which comprises: self-resetting spring device: the hydraulic cylinder comprises a first cylinder body, a first shaft rod, a pre-pressing spring and two pre-pressing limiting parts, wherein the first shaft rod is arranged in the first cylinder body, and two jacking parts are arranged on the inner wall of the first cylinder body at intervals; viscous damping device: the damping device comprises a second cylinder body, damping plugs arranged at two ends of the second cylinder body, and a second shaft rod, wherein two ends of the second shaft rod respectively penetrate through the damping plugs at the two ends; transition friction connecting device: the two ends of the first shaft lever and the second shaft lever are respectively and fixedly connected. Compared with the prior art, the damper integrates self-resetting, buckling prevention, lateral force resistance and energy consumption, shows good energy consumption and self-resetting and other anti-seismic performances when facing low-frequency and high-frequency power excitation, and simultaneously ensures that the damper component is basically lossless after earthquake, does not need to be replaced and reduces earthquake loss.
Description
Technical Field
The invention belongs to the technical field of structural engineering seismic resistance and shock absorption, and relates to a self-resetting wide-frequency-domain hybrid energy-consumption damper.
Background
The traditional structure anti-seismic design aims at large-earthquake collapse, and after the structure is subjected to rare earthquake action, although the structure does not collapse integrally, the material enters plastic yield energy consumption to cause larger residual deformation of the structure after the earthquake, the structure is difficult to repair after the earthquake, and the building can only wait for dismantling and rebuilding. During the period, the functions of the buildings cannot be exerted, and the disuse of a large number of buildings can bring huge economic loss and social problems to the society. With the introduction and popularization of the concept of flexible cities, people hope that the city can recover function quickly after a disaster, and therefore higher requirements are put on the performance of a structural system.
The self-resetting structure is a structure with high consistency in a tough city, and has the characteristics of low residual deformation, no damage or replaceable damage. The interlayer force displacement relation of the common self-reset structure shows the obvious flag-shaped characteristic. The traditional self-resetting structure has the flag-type hysteresis characteristic and limited energy consumption capability. Meanwhile, earthquakes with different frequency spectrum characteristics have different requirements on the energy consumption capacity of the structure.
The Chinese patent 201610135494.3 discloses a large-tonnage elastic-damping composite damping device, which comprises a damping cylinder body, an outer cylinder sleeve, a piston rod, a left spherical hinge seat, a right spherical hinge seat and a lengthening sleeve, wherein the right end of the damping cylinder body is connected with the right spherical hinge seat through the lengthening sleeve, the left end of the damping cylinder body is arranged in the outer cylinder sleeve, the outer cylinder sleeve is sleeved outside the damping cylinder body and the lengthening sleeve, the left end of the outer cylinder sleeve is fixedly connected with the left spherical hinge seat, the right end of the outer cylinder sleeve is slidably connected with the outer side of the lengthening sleeve, the inner cavity of the damping cylinder body is a damping cavity filled with damping medium, the piston rod penetrates through the damping cavity and is connected with the left spherical hinge seat, the damping cylinder body and the outer side of the lengthening sleeve form a spring cavity with the inner side outside the cylinder sleeve, two ends of the spring cavity are respectively provided with a resistance block, a spring device is arranged in the spring cavity, and the spring device is in a compressed state and is abutted against the resistance blocks at the two ends. Although the composite damping device disclosed by the patent has self-resetting and viscous energy consumption capabilities, the device has limited energy consumption capabilities under low-frequency vibration.
Disclosure of Invention
The invention aims to provide a self-resetting wide-frequency-domain hybrid energy consumption damper, which integrates self-resetting, buckling prevention, lateral force resistance and energy consumption into a whole, compared with the existing damper, the damper can be controlled to have better energy consumption capability in a wider frequency domain range by adjusting the proportion of displacement-related damping and speed-related damping, and shows good energy consumption, self-resetting and other anti-seismic properties when facing low-frequency and high-frequency power excitation, and meanwhile, the damper component is basically lossless after earthquake without replacement, and the earthquake loss is reduced.
The purpose of the invention can be realized by the following technical scheme:
a self-resetting wide-frequency-domain hybrid energy-consuming damper, comprising:
self-resetting spring device: the pre-pressing device comprises a first cylinder body, a first shaft rod, a pre-pressing spring and two pre-pressing limiting parts fixedly arranged on the first shaft rod at intervals, wherein the first shaft rod is arranged in the first cylinder body;
viscous damping device: the damping device comprises a second cylinder body, damping plugs and a second shaft rod, wherein the damping plugs are arranged at two ends of the second cylinder body and are matched with the second cylinder body to form a closed shell filled with viscous damping fluid, two ends of the second shaft rod respectively penetrate through the damping plugs at the two ends, a piston which is in contact sealing with the inner wall of the second cylinder body is further arranged on the second shaft rod, a through throttling hole is formed in the piston, and the second shaft rod and the damping plugs are in sliding sealing;
transition friction connecting device: the two ends of the first shaft rod and the second shaft rod are respectively and fixedly connected with the first cylinder body or the second cylinder body in friction contact.
Furthermore, a through hole for the first shaft rod with the prepressing limiting part to pass through is processed on the jacking piece, and a second rod end joint bearing connected with an external member is further arranged at one end of the first shaft rod, which extends out of the first cylinder body through the through hole.
Further, a spring gasket is arranged between the prepressing limiting part and the prepressing spring.
Furthermore, the diameter of the spring washer is larger than that of the prepressing limiting part, and the spring washer cannot penetrate through the jacking piece.
Furthermore, the second cylinder body is also provided with a first rod end joint bearing through a transition joint in a connecting manner.
Furthermore, the first cylinder body and the second cylinder body are fixedly connected to form a total cylinder body, one of the two jacking pieces is a spring plug nut fixedly installed at an opening at one end of the first cylinder body, and the other jacking piece is a directional sleeve which is arranged at the other end of the first cylinder body and jacks the end part of the second cylinder body.
Furthermore, the transitional friction connecting device comprises a friction connecting block, a friction cover plate and a friction pre-tightening screw rod, wherein the friction connecting block is arranged in the first cylinder body or the second cylinder body, two ends of the friction connecting block are respectively connected with the first shaft rod and the second shaft rod, an axial strip-shaped hole is processed on the side wall of the first cylinder body or the second cylinder body, the friction cover plate is arranged outside the first cylinder body, the friction pre-tightening screw rod penetrates through the strip-shaped hole, and two ends of the friction cover plate are respectively fixedly connected with the friction connecting block, so that the friction cover plate is in friction contact with the outer surface of the first cylinder body or the second cylinder body.
Furthermore, the inner side surface of the friction cover plate is matched with the shape of the outer surface of the first cylinder or the second cylinder.
Still further preferably, a friction plate which is in frictional contact with the outer surface of the first cylinder or the second cylinder is further mounted on the inner side surface of the friction cover plate.
Furthermore, the end part of the friction pre-tightening screw is also provided with a friction pre-tightening nut which is propped against the friction cover plate and is used for adjusting the friction force between the friction cover plate and the first cylinder body or the second cylinder body.
Compared with the prior art, the invention has the following advantages:
(1) each component has definite function, the internal space of the component is compact, and the assembly is convenient.
(2) The self-resetting capability and the deformation capability can be controlled and adjusted by adjusting the rigidity and the pretightening force level of the spring.
(3) The pre-pressing spring is used, the initial rigidity of the damper is high, and after the earthquake, the damping such as friction and the like can be overcome to reset the structure, so that the residual displacement is eliminated.
(4) The relative level of displacement-related damping and velocity-related damping can be adjusted by adjusting the magnitude of the frictional damping force and the viscous damping force, and the dampers at high frequency and low frequency can stably dissipate earthquake input energy as required.
Drawings
FIG. 1 is an axial cross-sectional schematic view of the present invention;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a cross-sectional schematic view of the damper of the present invention in a cross-section perpendicular to the axis;
FIG. 4 is a schematic top view of the orienting sleeve;
FIG. 5 is a schematic cross-sectional view of the alignment sleeve taken perpendicular to the axis;
FIG. 6 is a schematic view of a friction joint block;
FIG. 7 is a schematic view of a section of the friction connecting block perpendicular to the axis;
FIG. 8 is a schematic top view of the friction cover plate;
FIG. 9 is a schematic cross-sectional view of the friction cover plate taken perpendicular to the axial direction;
FIG. 10 is a schematic cross-sectional view of the friction cover plate in the axial direction;
FIG. 11 is a force-displacement relationship for a hybrid dissipative damper of the invention under steady (low frequency) excitation;
FIG. 12 is a force-displacement relationship for a hybrid dissipative damper of the invention under higher frequency excitation;
FIG. 13 is a graph of the force-displacement relationship of a prior art damper under steady (low frequency) excitation;
FIG. 14 is a graph of the force-displacement relationship of a prior art damper under higher frequency excitation;
the notation in the figure is:
1-a first rod end joint bearing, 2-a transition joint, 3-viscous damping fluid, 4-a sub-cylinder, 5-an outer cylinder lock nut, 6-a main cylinder, 7-a directional sleeve, 8-a sub-rod lock nut, 9-a friction connecting block, 10-a main rod lock nut, 11-a spring left side gasket, 12-a pre-compression spring, 13-a main rod, 14-a spring block nut, 15-a second rod end joint bearing, 16-a bearing lock nut, 17-a joint lock nut, 18-a first damping plug, 19-a piston, 20-a sub-rod, 21-a second damping plug, 22-a spring left end lock nut, 23-a spring right side gasket, 24-a spring right end lock nut, 25-a friction cover plate, 26-friction pre-tightening screw, 27-friction pre-tightening nut and 28-friction plate.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the following examples or embodiments, the pre-compression spring may be a ring spring, a coil spring, a disc spring, or the like, and the rest of the functional components or structures, which are not specifically described, are conventional components or structures in the art for achieving the corresponding functions.
The invention provides a self-resetting wide-frequency-domain hybrid energy-consumption damper, the structure of which is shown in figures 1 and 2, and the damper comprises:
self-resetting spring device: the hydraulic cylinder comprises a first cylinder body, a first shaft rod, a pre-pressing spring 12 and two pre-pressing limiting parts fixedly arranged on the first shaft rod at intervals, wherein the first shaft rod is arranged in the first cylinder body, the pre-pressing spring 12 is sleeved on the first shaft rod and is positioned between the two pre-pressing limiting parts, two jacking parts are further arranged on the inner wall of the first cylinder body at intervals, and the jacking parts can be used for the first shaft rod to move through and respectively jack two ends of the pre-pressing spring 12;
viscous damping device: the damping device comprises a second cylinder body, damping plugs arranged at two ends of the second cylinder body and matched with the second cylinder body to form a closed shell filled with viscous damping fluid 3, and a second shaft rod with two ends respectively penetrating through the damping plugs at the two ends, wherein a piston 19 in contact and sealing with the inner wall of the second cylinder body is further arranged on the second shaft rod, a through throttling hole is formed in the piston 19, and the second shaft rod and the damping plugs are in sliding sealing;
transition friction connecting device: the two ends of the first shaft rod and the second shaft rod are respectively and fixedly connected with the first cylinder body or the second cylinder body in friction contact.
In a specific embodiment of the present invention, the top clamping member is provided with a through hole for passing the first shaft with the pre-pressure limiting member, and a second rod end joint bearing 15 connected with the external member is further provided on the end of the first shaft extending out of the first cylinder through the through hole. In a specific embodiment of the present invention, a spring washer is further disposed between the preload limiter and the preload spring 12.
In a more specific embodiment, the diameter of the spring washer is larger than the preload limiter, and the spring washer cannot pass through the top tightening member.
In a specific embodiment of the invention, the second cylinder block is further provided with a first rod end joint bearing 1 connected through a transition joint 2.
In a specific embodiment of the invention, the first shaft rod, the second shaft rod and the transitional friction connecting device form an integrated central shaft rod, and the integrated central shaft rod traverses the first cylinder body and the second cylinder body to link a viscous damping part in the damper, a friction damping part and a prepressing spring 12 part, so that serial connection and functional parallel connection of all components are realized.
In a specific embodiment of the present invention, the first cylinder and the second cylinder are fixedly connected to form a total cylinder, and here, the first cylinder is preferably a primary cylinder 6 with a slightly larger diameter, and the second cylinder is a secondary cylinder 4 with a slightly smaller diameter, so that an internal thread is provided at an opening at one end of the primary cylinder 6, and an external thread is provided at an opening at one end of the secondary cylinder 4, so that the primary cylinder 6 and the secondary cylinder 4 can be fixedly connected by a threaded connection, and furthermore, a locking nut 5 can be further arranged at the connection of the primary cylinder 6 and the secondary cylinder 4 to prevent the connection between the two from loosening. Then, one of the two top tightening pieces is preferably a spring plug nut 14 fixedly installed at an opening at one end of the first cylinder, the other is a directional sleeve 7 disposed at the other end of the first cylinder and against an end of the second cylinder, one end of the directional sleeve 7 as one of the top tightening pieces can be fixed against the sub-cylinder 4, the other end can limit the position by abutting against a pre-pressing spring 12 (substantially, a spring washer), meanwhile, a cavity penetrating from left to right inside the directional sleeve 7 can be penetrated by a first shaft rod (i.e., a female shaft rod 13) with a pre-pressing limiting piece, similarly, a cavity on the spring plug nut 14 can be penetrated by the other end of the first shaft rod with the pre-pressing limiting piece and can simultaneously abut against the pre-pressing spring 12 to limit the position, so that the two top tightening pieces are matched with the pre-pressing limiting piece and the like, the first shaft rod can be pulled and pressed back in the first cylinder, the pre-pressure spring 12 is always in a pressurized state. More preferably, the directional sleeve 7 is of a split structure and is formed by splicing two semicircular rings, so that the arrangement between the pre-pressing spring 12 and the first cylinder body and the like avoids connection structural members (such as a friction pre-tightening screw 26 and the like) of a transition friction connection device, and the internal space of the damper is saved.
In a specific embodiment of the invention, the transitional friction connecting device comprises a friction connecting block 9, a friction cover plate 25 and a friction pre-tightening screw 26, wherein the friction connecting block 9 is disposed in the first cylinder or the second cylinder, two ends of the friction connecting block are respectively connected with the first shaft rod and the second shaft rod, an axial strip-shaped hole is processed on the side wall of the first cylinder or the second cylinder, the friction cover plate 25 is disposed outside the first cylinder, the friction pre-tightening screw 26 penetrates through the strip-shaped hole, and two ends of the friction cover plate 25 and the friction connecting block 9 are respectively fixedly connected with each other, so that the friction cover plate 25 is in friction contact with the outer surface of the first cylinder or the second cylinder. Through the matching of the strip-shaped hole and the friction pre-tightening screw 26, the friction cover plate 25 can only perform back-and-forth friction movement along the axial direction, so that corresponding friction damping force is provided.
Here, since the first cylinder is generally arranged to have a larger diameter than the second cylinder, the friction connecting block 9 is generally disposed in the first cylinder in order to save space of the damper and simplify the structure, and correspondingly, the bar-shaped hole, the friction cover 25, and the like are also disposed on the first cylinder. Meanwhile, preferably, the friction connecting block 9 is in threaded fixed connection with the first shaft rod and the second shaft rod respectively, and meanwhile, locking nuts (namely, the female shaft rod locking nut 10 and the male shaft rod locking nut 8) can be further arranged at the connection position to prevent looseness and central deviation.
In a more specific embodiment, the inner side surface of the friction cover plate 25 is adapted to the shape of the outer surface of the first cylinder or the second cylinder, and the outer side surface of the friction cover plate 25 is designed to be a plane, so that after the friction pre-tightening screw 26 is used to apply pre-tightening force to the friction cover plate 25, eccentricity can be effectively avoided.
In a further specific embodiment, a friction plate 28 is further installed on the inner side surface of the friction cover 25 to frictionally contact the outer surface of the first or second cylinder.
In a more specific embodiment, the end of the friction pretension screw 26 is further provided with a friction pretension nut 27 abutting against the friction cover plate 25 and used for adjusting the friction force between the friction cover plate 25 and the first cylinder or the second cylinder.
The above embodiments may be implemented individually, or in any combination of two or more.
The above embodiments will be described in more detail with reference to specific examples.
Example 1:
the self-reset bit wide frequency domain hybrid damper adopting the structure mainly comprises a viscous damping device, a self-reset spring device, a transitional friction connecting device and two rod end joint ball bearings arranged at two ends, namely a first rod end joint ball bearing and a second rod end joint ball bearing, as shown in fig. 1 and fig. 2.
The viscous damping device basically comprises: the first rod end joint bearing 1, the bearing lock nut 16, the transition joint 2, the joint lock nut 17, the first damping plug 18, the second damping plug 21 and the viscous damping sub-cylinder 4 (namely, the second cylinder) are fixedly connected to form a closed shell of the viscous damping device, the sub-cylinder 4 is filled with viscous damping fluid 3, the viscous damping fluid 3 is sealed between the first damping plug 18 and the second damping plug 21, a piston 19 is fixed on a sub-shaft 20 (namely, the sub-shaft 20) of the viscous damper, orifices are distributed on the piston 19 to allow the viscous damping fluid 3 to pass through, the outer ring surface of the piston 19 is in contact sealing with the inner ring surface of the sub-cylinder 4, and the viscous damping fluid 3 can only repeatedly flow on two sides of the piston 19 through the orifices to generate viscous damping force.
The self-reset spring device mainly comprises two spring lock nuts (namely a spring left end lock nut 22 and a spring right end lock nut 24, namely two prepressing limiting parts), two spring washers (namely a spring left side washer 11 and a spring right side washer 23), a prepressing spring 12, a central female shaft rod 13 (namely a first shaft rod) and a second rod end joint bearing 15. During pretension, at female shaft pole 13 right side screw thread region installation spring right side lock nut fixed becoming an organic whole, then put into spring right side gasket 23 and pre-compaction spring 12 in proper order, in this example, pre-compaction spring 12 uses the high-strength steel dish spring. And then installing and fixing the spring left-side gasket 11 of the rod, applying pressure to a specified displacement at the second rod end joint bearing 15, and then locking a spring left-side locking nut on the outer side of the spring left-side gasket 11. Meanwhile, the spring plug nut 14 is fixedly connected with the inner side of the female cylinder body 6 through threads to serve as a support of the pre-pressing spring 12, and the assembled self-resetting spring device part is connected with the transition friction connecting device and then extends into the female cylinder body 6 until the right gasket 23 of the spring is tightly propped against the spring plug nut 14. And simultaneously, the main shaft rod 13 is rotated to enable the circular through hole on the friction connecting block 9 to be aligned with the axial strip-shaped hole on the outer side of the main cylinder body 6. After the four friction pre-tightening screws 26 are inserted, the viscous damping device part and the self-resetting spring device part are connected into a whole through threads.
The key components of the transitional friction connecting device are a friction connecting block 9, a friction cover plate 25 and a friction plate 28, the whole friction connecting block 9 is in a column shape, internal threads are processed at two ends of the friction connecting block and are respectively connected and fixed with external threads of a female shaft rod 13 and a male shaft rod 20, meanwhile, a female shaft rod locking nut 10 and a male shaft rod locking nut 8 can be further arranged at the joint to prevent looseness and central deviation, a plurality of rows of circular through holes for friction pre-tightening screw rods 26 to penetrate are radially arranged at the middle position of the friction connecting block 9, strip-shaped holes are processed on the side wall of the female cylinder body 6, the strip-shaped holes are aligned to the strip-shaped holes on the outer side of the female cylinder body 6 through the circular through holes, after the four friction pre-tightening screw rods 26 are inserted, the movement direction of the transitional friction connecting device can be limited, then, the friction plate 28 is respectively embedded into rectangular grooves on the female cylinder body 6 and the friction cover plate 25, the friction cover plate 25 is arranged on the outer side of the female cylinder body 6, the friction pre-tightening nut 27 on the friction pre-tightening screw 26 is pressurized by a torque wrench with a specified torque (cross symmetrical pressurization), and finally, the nut is installed on the outer side of the friction pre-tightening screw 26 to prevent loosening.
When the second rod end joint bearing 15 is relatively displaced relative to the first rod end joint bearing 1, a central guide rod formed by the female shaft rod 13, the friction connecting block 9, the sub shaft rod 20 and the piston 19 generates relative displacement relative to an outer sleeve (namely the female cylinder 6 and the like), and the pre-pressing spring 12 is further compressed to generate restoring force; the friction connecting block 9 drives the friction pre-tightening screw 26 and the friction cover plate 25 to generate relative displacement relative to the female cylinder body 6, and the friction plate 28 directly generates relative dislocation to provide displacement related damping; the viscous damping fluid 3 in the sub-cylinder 4 is squeezed through the orifice, generating a viscous damping force, providing "speed dependent damping".
Taking the hybrid damper of the embodiment as an example, the force-displacement relationship under steady excitation (displacement amplitude u is 20mm, frequency f → 0Hz, and velocity amplitude v → 0mm/s) is as shown in fig. 11, under steady excitation, viscous damping fluid slowly flows through a piston small hole, no viscous damping force is generated, only a spring and a friction plate provide rigidity and bearing force, at this time, the curve shows a typical flag-type characteristic, under sine power excitation of higher frequency (displacement amplitude u is 20mm, frequency f → 1.725Hz, and velocity amplitude v → 217mm/s), viscous damping participates in energy consumption, and the force-displacement relationship is as shown in fig. 12, the hysteresis curve is more full, and the energy consumption capability is further improved. Compared with the damper designed in patent 201610135494.3, the damper is designed by using the spring and the viscous damper with the same parameters, the force-displacement relation under the static excitation is shown in fig. 13, only the pre-pressing spring provides rigidity and bearing force, the hysteresis curve has the characteristic of a double-fold line type and almost has no energy consumption capacity, under the dynamic excitation with the same high frequency, the viscous damping participates in energy consumption, and the force-displacement relation is shown in fig. 14. Although the damper has a relatively full hysteresis curve and relatively good energy consumption capability under the action of high frequency, the energy consumption capability is limited under the excitation of low frequency, and the hybrid damper has stable and controllable energy consumption capability in the whole frequency domain.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A self-resetting wide-frequency-domain hybrid energy-consumption damper is characterized by comprising:
self-resetting spring device: the pre-pressing device comprises a first cylinder body, a first shaft rod, a pre-pressing spring and two pre-pressing limiting parts fixedly arranged on the first shaft rod at intervals, wherein the first shaft rod is arranged in the first cylinder body;
viscous damping device: the damping device comprises a second cylinder body, damping plugs and a second shaft rod, wherein the damping plugs are arranged at two ends of the second cylinder body and are matched with the second cylinder body to form a closed shell filled with viscous damping fluid, two ends of the second shaft rod respectively penetrate through the damping plugs at the two ends, a piston which is in contact sealing with the inner wall of the second cylinder body is further arranged on the second shaft rod, a through throttling hole is formed in the piston, and the second shaft rod and the damping plugs are in sliding sealing;
transition friction connecting device: the two ends of the first shaft rod and the second shaft rod are respectively and fixedly connected with the first cylinder body or the second cylinder body in friction contact.
2. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 1, wherein the top member is provided with a through hole for passing the first shaft with the pre-pressing limiting member, and a second rod end joint bearing connected with an external member is further provided at an end of the first shaft extending out of the first cylinder through the through hole.
3. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 1, wherein a spring washer is further disposed between the pre-pressing limiting member and the pre-pressing spring.
4. The self-resetting wide frequency range hybrid energy dissipating damper according to claim 3, wherein the diameter of the spring washer is larger than the preload limiter, and the spring washer cannot pass through the top member.
5. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 1, wherein the second cylinder block is further provided with a first rod end joint bearing through a transition joint connection.
6. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 1, wherein the first cylinder and the second cylinder are fixedly connected to form a total cylinder, one of the two tightening members is a spring nut fixedly installed at an opening at one end of the first cylinder, and the other one of the two tightening members is an orientation sleeve disposed at the other end of the first cylinder and abutting against the end of the second cylinder.
7. The self-resetting wide-frequency-range hybrid energy-consumption damper according to claim 1, wherein the transitional friction connecting device comprises a friction connecting block, a friction cover plate and a friction pre-tightening screw rod, wherein the friction connecting block is arranged in the first cylinder body or the second cylinder body, two ends of the friction connecting block are respectively connected with the first shaft rod and the second shaft rod, an axial strip-shaped hole is processed on the side wall of the first cylinder body or the second cylinder body, the friction cover plate is arranged outside the first cylinder body, the friction pre-tightening screw rod penetrates through the strip-shaped hole, and two ends of the friction cover plate are respectively fixedly connected with the friction connecting block, so that the friction cover plate is in friction contact with the outer surface of the first cylinder body or the second cylinder body.
8. The self-resetting wide frequency range hybrid energy consuming damper of claim 7, wherein the inner surface of the friction cover plate is adapted to the shape of the outer surface of the first cylinder or the second cylinder.
9. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 8, wherein a friction plate is further installed on the inner side surface of the friction cover plate to be in frictional contact with the outer surface of the first cylinder or the second cylinder.
10. The self-resetting wide-frequency-range hybrid energy-consuming damper according to claim 7, wherein the friction pre-tightening nut is disposed at the end of the friction pre-tightening screw to abut against the friction cover plate and is used for adjusting the friction force between the friction cover plate and the first cylinder or the second cylinder.
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| CN116290375B (en) * | 2023-05-24 | 2023-08-18 | 中铁城建集团第一工程有限公司 | Anti-seismic buckling support system and support method thereof |
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|---|---|---|---|---|
| CN204326293U (en) * | 2014-12-16 | 2015-05-13 | 湖南科技大学 | Displacement rotating scale-up version marmem damper |
| CN106638285B (en) * | 2016-12-29 | 2018-04-13 | 北京建筑大学 | A kind of horizontal seismic isolation bearing |
| CN107419945B (en) * | 2017-05-31 | 2023-12-19 | 天津大学 | Inertial mass damping device |
| CN108457168B (en) * | 2018-01-15 | 2019-11-12 | 东南大学 | A kind of self-centering Effects of Viscous Fluid Damper |
| CN110130513A (en) * | 2018-02-08 | 2019-08-16 | 北京市道路工程质量监督站 | A kind of Self-resetting friction damper |
| CN108756410B (en) * | 2018-05-29 | 2020-03-31 | 东南大学 | Prepressing annular spring self-centering viscous damper |
| CN108915113B (en) * | 2018-07-02 | 2020-09-29 | 兰州理工大学 | Sectional combined energy-consuming damping viscous damper |
| WO2020111459A1 (en) * | 2018-11-30 | 2020-06-04 | (주)제이원산업 | Smart hybrid damper |
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2020
- 2020-06-22 CN CN202010571437.6A patent/CN111827760B/en active Active
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