CN108643666B - Damper of efficient space utilization type end direct-support secondary displacement amplification device - Google Patents
Damper of efficient space utilization type end direct-support secondary displacement amplification device Download PDFInfo
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- CN108643666B CN108643666B CN201810248231.2A CN201810248231A CN108643666B CN 108643666 B CN108643666 B CN 108643666B CN 201810248231 A CN201810248231 A CN 201810248231A CN 108643666 B CN108643666 B CN 108643666B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
Abstract
The invention discloses a damper of a high-efficiency space utilization type end direct-support secondary displacement amplification device, which comprises a vertical type moving displacement support, a T-shaped overhanging positioning support, a T-shaped connecting plate, a displacement amplification rod, an input rod with a rack, a duplicate gear, an output rod with a rack, a damper connecting piece, an input end guide gear, a damper device, a damper fixing support and the like. When the deformation of the building structure is small or slow, the relative displacement between the layers of the building is amplified for the first time through the displacement amplification rod, then the displacement amplified for the first time is amplified for the second time through the duplicate gear, and the amplification is performed for two times in total, so that the damper generates larger relative displacement, and further generates larger damping force, and further, the better damping effect is achieved. Meanwhile, the device has the characteristics of simple structure, considerable cost, convenience in installation, convenience in operation, flexibility in arrangement, firmness, durability and the like, and therefore, the device has a wide development and application prospect.
Description
Technical Field
The invention belongs to the technical field of civil engineering structure anti-seismic control, and particularly relates to a high-efficiency space utilization type direct-support secondary displacement amplification damper device.
Background
The basic principle of the engineering structure shock absorption is that a specially-made shock absorption component or device is utilized to enter a plastic state firstly under the action of a strong shock to generate damping, so that energy input into a building structure system is consumed, the dynamic response of the structure is reduced, the safety of a main structure body is better ensured, and the engineering shock absorption technology is effective, safe and economic. Many types of shock absorbing devices have been developed and used by those skilled in the art at home and abroad. With the increase of span and height of building structures and the increasing complexity of structural forms, the engineering structures designed according to the traditional design method are difficult to avoid damage and destruction under the action of strong earthquake. The suppression of structural dynamic response caused by external dynamic loads through a vibration control technology is an effective means for improving the structural safety, such as applying a passive anti-seismic control technology and the like. Among them, techniques for performing structural passive anti-seismic control by applying various viscous dampers are common.
The structure is added with a damper to consume the earthquake energy input into the structure, thereby reducing the earthquake response of the structure. Because the building structure is generally not allowed to generate larger displacement deformation of the layer surface, in order to effectively exert the energy dissipation function of the damper, an amplifying device is often needed to amplify the interlayer deformation of the building structure. Generally, under the action of external force, earthquake or wind load, relative displacement or corner generated between different structural members of equipment or a building structure is small, and the existing displacement-related energy dissipater can fully exert energy dissipation capacity only by needing the structure to have large relative displacement or corner, so that the energy dissipation and shock absorption effects of the energy dissipater are influenced, and meanwhile, the existing energy dissipation device integrally occupies a large building area and influences the use efficiency of the space of the building structure. And a complex energy consumption supporting system is needed, the rigidity of the supporting system of the energy dissipater affects the energy consumption effect of the energy dissipater, and the integral rigidity of the structure is also affected, so that the energy consumption device is limited in practical application.
The invention provides a novel efficient space utilization type end part direct-support secondary displacement amplification damper device, aiming at a series of problems and disadvantages that the displacement amplification effect of the damper device of the current building structure is not obvious and most of the wall area is occupied. This attenuator device can produce bigger displacement, accomplishes the displacement amplification to the first time of initial displacement promptly by displacement amplification pole, and the displacement that first time was enlargied is accomplished the displacement amplification of second time through double linkage gear again, obvious improvement enlarge the effect, avoid present stage attenuator can not full play the drawback of attenuator in small displacement deformation. Thereby greatly reducing the damage of the vibration action to the building structure. Meanwhile, the damper device is high in working and operating efficiency, long in service life and remarkable in energy consumption effect, and compared with a damper of a herringbone inclined strut at the current stage, the damper is provided with a vertical displacement movable strut arranged at the end part of a wall body, occupies less wall body area, and has the characteristics of simple structure, considerable cost, convenience in installation, convenience in operation, flexibility in arrangement, firmness, durability and the like, so that the damper device has a wide development and application prospect.
Disclosure of Invention
The invention solves the technical problem that aiming at the defects in the prior art, the provided high-efficiency space utilization type end part direct-support secondary displacement amplification damper device is simple in structure, convenient to implement and low in cost, and can effectively amplify the deformation displacement for the second time when the building structure deforms slowly or deforms less, so that the displacement of the damper is increased, a larger damping force is generated, the damping force provided by the damper to the building structure can be effectively improved, the vibration control efficiency of the building structure is improved, the performance of the damper is fully exerted, and the performance is reliable. On the other hand, the efficient space utilization type end part direct-support secondary displacement amplification damper device provided by the invention has the advantages that the occupied wall surface area is less, the device is simple, the damper device can be used for general installation, the problem that the damper occupies the whole wall surface is solved, the wall surface area is more efficiently utilized, the integral anti-seismic efficiency is improved although the working space is reduced, and the application prospect is wide.
The invention mainly comprises a vertical displacement movable support, a displacement amplifying rod, a double-linkage gear amplifying device, a damper device and the like. According to the invention, the vertical displacement moving support is fixedly connected with the upper floor beam through the bolts, the relative displacement of the upper layer is transmitted to the displacement amplification rod through the vertical displacement moving support, the first amplification effect of the displacement amplification rod is realized, the small relative displacement between the layers is amplified for the first time, and the displacement amplification rod further amplifies the displacement amplified for the first time through the double-linkage gear, so that the secondary displacement amplification is realized, the defect that the amplification effect of the existing damper in the small interlayer displacement is not obvious is improved, the secondary displacement amplification is carried out, the damper is enabled to generate larger relative displacement, and the damper generates larger damping force, thereby achieving a better damping effect. The vibration control efficiency of the building structure is effectively improved, and the performance of the damper can be fully exerted under the condition that the damper vibrates in a medium-small mode. Meanwhile, the vertical displacement moving support does not penetrate through the whole wall surface like a herringbone inclined support of a displacement damper in the prior stage, and occupies a large wall body area.
Aiming at the defects of the prior art, the efficient space utilization type end part direct-support secondary displacement amplification damper device is designed, and the damper of the efficient space utilization type end part direct-support secondary displacement amplification device is characterized by comprising a vertical type moving displacement support 1, a T-shaped connecting plate 2, a displacement amplification rod 3, a T-shaped overhanging positioning support 4, an output rod 5 with a rack, a duplicate gear 6, an input rod 7 with a rack, an input end guide gear 8, a damper device 9, a damper connecting piece 10 and a damper fixing support 11.
The upper end part of the vertical type mobile displacement support 1 is fixedly connected with an upper floor beam 22 through a connecting plate 20 and a first group of bolts 19, and the lower end part of the vertical type mobile displacement support 1 is fixedly connected with a second group of bolts 19 through a T-shaped connecting plate 2; the T-shaped connecting plate 2 is connected with the displacement amplification rod 3 through a first movable axis hinge 12, and the displacement amplification rod 3 is connected with the top of the T-shaped overhanging positioning bracket 4 through a fixed axis rotating hinge 13; the T-shaped overhanging positioning support 4 is fixed on a lower floor beam 21 through a third group of bolts 19, the bottom end of the displacement amplification rod 3 is connected with an input rod 7 with a rack through a second movable axis hinge 12, and the vertical movable displacement support 1, the T-shaped connecting plate 2, the displacement amplification rod 3 and the T-shaped overhanging positioning support 4 form a first displacement amplification device.
An input end guide gear 8 which is contacted with the bottom surface of the input rod is arranged below the input rod 7 with the rack, the input end guide gear 8 is fixedly connected with a lower floor beam 21 through a fourth group of bolts 19, and the input end guide gear 8 is fixed through a rotating shaft 15. The upper rack of the input rod 7 with the rack is meshed with the duplicate gear 6, the duplicate gear 6 consists of a first gear 16 and a second gear 17 which are connected in parallel, the radius of the first gear 16 is larger than that of the second gear 17, the second gear 17 is meshed with the gear of the input rod 7 with the rack at the lower part, and the first gear 16 is meshed with the output rod 5 with the rack at the upper part; the output rod 5 with the rack, the duplicate gear 6, the input rod 7 with the rack and the input end guide gear 8 form a second displacement amplifying device.
The output rod 5 with the rack is connected with a damper device 9 through a connecting piece 18, the damper device 9 is fixed through a damper fixing support 11, the other end of the damper device 9 is connected with a damper connecting piece 10 through a fixing rotating hinge 14, and the damper connecting piece 10 is fixedly connected with a lower floor beam 21 through a fifth group of bolts 19. Relative displacement between the building floor props 1 through the vertical type removal displacement with floor roof beam fixed connection and gives displacement transmission for displacement amplification pole 3, through displacement amplification pole 3 amplification effect, relative displacement between the building floor has obtained enlargiing for the first time. The lower end of the displacement amplification rod 3 is hinged with an input rod 7 with a rack through a movable axis hinge 12, and the input rod 7 with the rack generates axial reciprocating displacement due to the first amplification of the displacement; therefore, the duplicate gear 6 rotates, the second gear 17 is meshed with the input rod 7 with the rack to rotate, meanwhile, the rotation of the second gear 17 drives the first gear 16 to rotate, the first gear 16 is meshed with the output rod 5 with the rack to rotate, axial reciprocating movement displacement is generated, and the displacement is amplified for the second time through the amplification effect of the duplicate gear 6. Thereby, the outer cylinder of the damper device 9 generates a secondary amplified relative displacement, and the damping material in the damper device 9 prevents the relative displacement from generating a more effective damping force.
The displacement amplification rod 3 is a thin steel rod with three bolt holes, namely a near-end bolt hole, a middle bolt hole and a far-end bolt hole; a middle bolt hole is hinged with the T-shaped overhanging positioning bracket 4 through a fixed axis hinge, a near-end bolt hole is hinged with the T-shaped connecting plate 2 through a moving axis hinge, and a far-end bolt hole is hinged with an input rod 7 with a rack through a moving axis hinge; the distance between the far-end bolt hole and the middle bolt hole and the ratio of the distance between the near-end bolt hole and the middle bolt hole are adjusted to be controlled between 2 times and 5 times, namely, the displacement is transferred to the displacement amplification rod through the transmission of the vertical type displacement support 1 by the interlayer relative displacement generated by the upper floor beam 22, and the initial interlayer displacement is amplified by 2 times to 5 times by the amplification effect of the displacement amplification rod 3, so that the first displacement amplification is realized.
An input end guide gear 8 is fixed at the lower part of the input rod 7 with the rack and is fixedly connected with a lower floor beam 21, so that the path is kept stable when the input rod 7 with the rack axially reciprocates, the dual gear 6 rotates to drive the output rod 5 with the rack to axially reciprocate, the displacement is transmitted to the damper device 9, the tooth pitches of the first gear 16 and the second gear 17 are the same, the amplification factor is controlled by controlling the ratio of the radius of the first gear to the radius of the second gear and is controlled between 2 times and 5 times, namely, the first amplification displacement transmitted by the input rod with the rack rotates for a certain angle through the second gear 17, meanwhile, the first gear 16 rotates for the same angle, and the arc length formula S-R shows that the radian invariable radius and the arc length are in a linear relation, namely, the second displacement is 2 times to 5 times of the first amplification displacement, the effect of the second displacement magnification is achieved. The result of two displacement enlargements is a power relation, namely, the relative displacement between layers reaches 4 to 25 times of the initial relative displacement through two displacement enlargements. The amplification effect is obviously improved, and the defect that the damper cannot be fully exerted in the micro displacement deformation at the present stage is avoided. Thereby greatly reducing the damage of the vibration action to the building structure.
An input end guide gear 8 is fixed at the lower part of the input rod 7 with the rack and is fixedly connected with a floor beam, so that the path is kept stable when the input rod 7 with the rack does the axial reciprocating motion, the dual gear 6 rotates to drive the output rod 5 with the rack to do the axial reciprocating motion, the displacement is transmitted to the damper device 9, namely, the amplification of the dual gear can also change the tooth pitches of the first gear 16 and the second gear 17 under the condition that the radius of the first gear is fixed with the radius of the second gear, so as to further achieve the amplification effect, namely, the tooth pitch of the second gear 17 is controlled to be increased, the tooth pitch of the first gear 16 is not changed, when the first amplification displacement is transmitted to the second gear 17, the second gear 17 rotates by a larger angle than the tooth pitch before the tooth pitch is not increased, and further, the arc length formula can obtain that S is increased, namely, the second amplification is actually amplified by two different modes, achieving the second displacement amplification; s represents arc length, alpha represents rotation angle, and R is gear radius.
Compared with the existing damper device which adopts an integral herringbone inclined strut, the end-mounted vertical movable displacement strut 1 is adopted, and penetrates through the whole wall structure, a series of difficulties are brought to wall windowing and wall decoration, and the attractive design principle of a building structure is not facilitated. Thereby the area of the wall body is efficiently utilized, and the performance of the damper is fully exerted.
The lower part of the T-shaped connecting plate 2 is hinged with the near end of the displacement amplifying rod 3 through a fixed axis hinge 12, namely the ratio of the distance from the center of a hinge round hole to the upper edge of the lower floor beam 21 to the vertical distance from the center of the hinge round hole to the lower edge of the upper floor beam 22 is controlled between 1/6 and 1/4. Compared with the existing stage, the distance ratio of the damper is obviously improved, even if the relative initial displacement between layers is much larger than that of the existing damper, a large amount of wall area is saved
The distance ratio of the distance between the T-shaped overhanging positioning bracket 4 and one end of the damper device 9 to the distance between the T-shaped overhanging positioning bracket 4 and the other end is controlled between 1/4 and 1/3. Compared with the prior damper, the damper has the advantage of saving a great deal of space across the whole horizontal direction.
The duplicate gear 6 is fixed through a support.
The input guide gear 8 can be replaced by a pulley, i.e. the input rod 7 with the rack adopts an upper rack and a lower smooth device.
The damper device 9 is a viscoelastic damper or a viscous damper or a friction type damper.
Compared with the prior art, the invention has the following substantive characteristics and progresses:
compared with the existing energy consumption device, the efficient space utilization type end part direct-support secondary displacement amplification damper device occupies a larger space, influences the space utilization rate of a building structure, and has the advantages of small occupied space, efficient utilization of wall space, convenience in installation and more remarkable energy consumption effect.
2 the invention discloses a high-efficiency space utilization type end part direct-support secondary displacement amplification damper device, wherein a displacement amplification rod is applied to a first displacement amplification part device to amplify the interlayer displacement of a building for the first time, so that the damper generates larger damping force.
3 the invention relates to a high-efficiency space utilization type end part direct-support secondary displacement amplification damper device, wherein a second amplification displacement part device of the damper device comprises a duplicate gear, an input rod rack, an output rod rack and the like, the second amplification displacement part device amplifies the displacement amplified for the first time, and the second amplification displacement part device has the advantage of gear rotation, namely stable transmission, accurate transmission ratio, large power, speed and size ranges, reliable work, high efficiency and long service life.
4 the invention discloses a high-efficiency space utilization type end part direct-support secondary displacement amplification damper device which is researched and developed according to the gear speed change principle aiming at the dynamic reaction characteristic of a civil building structure under the action of an earthquake and the operation characteristic of a viscous damper, and has the advantages of simple structure, novel and reasonable design, convenience in realization and low cost.
The efficient space utilization type end part direct-support secondary displacement amplification damper device disclosed by the invention is reasonably arranged between the damper and a building structure, and can effectively improve the damping provided by the damper to the building structure, improve the vibration control efficiency of the building structure and realize the purpose of effectively reducing the damage of the building structure when the deformation of the building structure is smaller or the deformation of the building structure is slower, such as the lower structural vibration frequency.
The efficient space utilization type end direct-support secondary displacement amplification damper device fully exerts the advantages of high efficiency, strong applicability and the like of gear rotation, fully considers the characteristic of using the damper for building structure anti-vibration control, has reliable performance and good use effect, provides a more effective method for anti-vibration control of building structures in the field of civil engineering, and has wide application prospect.
7 the efficient space utilization type end part direct-support secondary displacement amplification damper device disclosed by the invention has the advantages of simple structure, convenience in implementation and low cost, can effectively provide reliable damping force for a building structure when the building structure deforms less or slowly, improves the efficiency of vibration control of the building structure, has reliable performance and has wide development prospect.
The technical scheme of the invention is further described in detail through the attached drawings and the exemplary drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of 1/2 according to the present invention.
FIG. 2 is a front view of a dual transfer gear of the present invention.
FIG. 3 is a side view of the double linkage gear of the present invention.
Fig. 4 is a cross-sectional view of a viscoelastic damper or a viscous damper of the present invention.
Fig. 5 is a sectional view of the friction type damper of the present invention.
FIG. 6 is a schematic view of the displacement amplifying lever of the present invention.
Detailed Description
The patent of the invention as shown in fig. 1 includes: the vertical type displacement movement support comprises a vertical type displacement movement support 1, a T-shaped connecting plate 2, a displacement amplification rod 3, a T-shaped overhanging positioning support 4, an output rod 5 with a rack, a duplicate gear 6, an input rod 7 with a rack, an input end guide gear 8, a damper device 9 connecting piece 10, a damper fixing support 11 and the like. The upper end of the vertical displacement moving support (1) is fixedly connected with the upper floor beam approximately at the position between 1/4 and 1/3 of the whole floor beam to ensure a smaller wall space, the lower end of the vertical displacement moving support is fixedly connected with the T-shaped connecting plate 2, the vertical displacement moving support 1 is approximately rigid and does not generate bending deformation, and a material with higher rigidity is selected.
The T-shaped connecting plate 2 and the vertical movable displacement support 1 are fixedly connected through bolts as shown in figure 1, and the lower end of the T-shaped connecting plate is hinged with the displacement amplification rod 3 through a movable axis hinge 12.
As shown in fig. 1, the upper end of the displacement amplification rod 3 is hinged to the T-shaped connecting plate 2 through a movable axis hinge 12, the device transfers the displacement between layers through the vertical displacement movable support 1, the displacement is transmitted to the displacement amplification rod 3 through the T-shaped connecting plate 2, and the displacement amplification rod 3 is hinged through a fixed axis hinge 13 through a T-shaped overhanging positioning bracket 4.
The T-shaped overhanging positioning bracket 4 shown in fig. 1 is fixedly connected with a lower floor beam 21 through a bolt 19, and the lower end of the displacement amplification rod 3 is hinged with the input rod through a movable axis hinge 12. The displacement amplification rod 3 controls the amplification ratio of the displacement through the length ratio.
As shown in fig. 2, as can be seen from fig. 2, L1: the ratio between L2, in turn, can be extrapolated to the magnification of the displacement.
The lower end of the displacement amplification rod 3 is hinged with an input rod 7 with a gear through a movable axis hinge 12, the movement of the input rod 7 with the gear is caused by the rotation of the displacement amplification rod 3, the input rod 7 with the gear performs an approximately horizontal axial reciprocating movement, the gear below the input rod is meshed with an input end guide gear 8, the input end guide gear 8 is fixed on a lower floor beam 21 through a bolt 19, and the input rod 8 with the gear performs an axial reciprocating movement to drive the rotation of the duplicate gear 6. The duplicate gear 6 is composed of a first gear 16 and a second gear 17 which are connected together, wherein the radius of the first gear is larger than that of the second gear, namely R1> R2. The second gear meshes with the gear of the lower input rod 7, and the first gear meshes with the upper output rod 5 with a gear.
The amplification principle of the dual gear 6 is as follows: when the input rod 7 moves horizontally, it drives the second gear to rotate, and when the second gear rotates a certain angle, i.e. a certain distance, because the first gear and the second gear are fixed together, they rotate at the same time, i.e. the same angle, the distance of the first gear rotation is greater than that of the second gear, and the displacement is further amplified, i.e. the second amplification displacement.
The amplification efficiency of the double-linkage gear 6 can be improved by controlling the ratio of R1: the ratio of R2. When the displacement is amplified for the second time, the speed of the displacement is accelerated, and the double gear 6 not only increases the displacement but also accelerates the speed, so that the performance of the damper is more effectively improved, and the vibration control efficiency is enhanced.
The tail end of the output rod 5 is fixedly connected with a damper device through a damper connecting piece, the tail end of the damper is hinged with the connecting rod, the damper is fixed by a damper fixing support 11, and the damper device is generally a viscoelastic damper or a viscous damper. The lower end of the connecting rod is fixedly connected with the lower floor beam through a bolt.
The floor beam 22 on the vertical movable displacement support 1 is fixedly connected through bolts, and the distance between the vertical beam and the floor beam is between 1/4 and 1/3 of the total width. The wall space is efficiently utilized, and the installation and implementation of other equipment are facilitated. The practicability is greatly enhanced, and the defects in the past are improved.
The secondary displacement amplifying device amplifies the interlayer deformation by the displacement amplifying rod 3 for the first time, then amplifies the interlayer deformation by the duplicate gear 6 for the second time, and the total amplification effect is the product of the two amplification effects. The present invention greatly improves this situation by not functioning the damper at small inter-layer displacements compared to previous damper devices.
The initial displacement of the amplification effect of the displacement amplification rod 3 depends on the height of the vertical type displacement support, the larger the height of the vertical type displacement support is, the larger the relative displacement between layers is, and the amplification device fully ensures the point of the invention, and the occupied height of the amplification device is small, so that the height of the vertical type displacement support, namely the relative interlayer displacement, is ensured to be the maximum, namely the displacement is controlled between 1/6 and 1/4. The amplification of the displacement is then more efficient.
High-efficient space utilization type, as shown in fig. 1, this attenuator device shared area ratio on whole wall is compared in the attenuator device in the past and is distributed in whole wall and compares, occupies very little to save most wall and install, construct other facilities like: the invention can save a large amount of wall surface area under the condition of ensuring better anti-seismic effect, thereby realizing high-efficiency work.
Since viscous damping theory holds that damping is proportional to the product of the damping coefficient and the velocity; the invention can effectively accelerate the displacement rate of the input rod of the viscous damper caused by the deformation of the structure, so that compared with the viscous damper without the invention, the viscous damper using the invention can increase the displacement of the viscous damper and effectively improve the damping provided by the viscous damper according to the viscous damping theory under the condition that the damping coefficient of the damper is not changed, thereby improving the vibration control effect of the viscous damper on the building structure.
Moreover, the invention fully considers the following characteristics of the anti-seismic control: firstly, when the vibration frequency of the building structure is low and the deformation rate of the building structure is low, the input displacement rate of the viscous damper can be increased, the displacement of the viscous damper is increased, the damping provided by the viscous damper in the same time is effectively improved, and the working efficiency of the viscous damper is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, variations and equivalent structural changes made on the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A damper of a high-efficiency space utilization type end direct-support secondary displacement amplification device is characterized by comprising a vertical type mobile displacement support (1), a T-shaped connecting plate (2), a displacement amplification rod (3), a T-shaped overhanging positioning support (4), an output rod (5) with a rack, a duplicate gear (6), an input rod (7) with a rack, an input end guide gear (8), a damper device (9), a damper connecting piece (10) and a damper fixing support (11);
the upper end part of the vertical type mobile displacement support (1) is fixedly connected with an upper floor beam (22) through a connecting plate (20) and a first group of bolts (19), and the lower end part of the vertical type mobile displacement support (1) is fixedly connected with a second group of bolts (19) through a T-shaped connecting plate (2); the T-shaped connecting plate (2) is connected with the displacement amplification rod (3) through a first movable axis hinge (12), and the displacement amplification rod (3) is connected with the top of the T-shaped overhanging positioning bracket (4) through a fixed axis rotating hinge (13); the T-shaped overhanging positioning support (4) is fixed on a lower floor beam (21) through a third group of bolts (19), the bottom end of the displacement amplification rod (3) is connected with an input rod (7) with a rack through a second movable axis hinge (12), and the vertical movable displacement support (1), the T-shaped connecting plate (2), the displacement amplification rod (3) and the T-shaped overhanging positioning support (4) form a first displacement amplification device;
an input end guide gear (8) which is contacted with the bottom surface of the input rod is arranged below the input rod (7) with the rack, the input end guide gear (8) is fixedly connected with a lower floor beam (21) through a fourth group of bolts (19), and the input end guide gear (8) is fixed through a rotating shaft (15); the upper rack of the input rod (7) with the rack is meshed with the duplicate gear (6), the duplicate gear (6) consists of a first gear (16) and a second gear (17) which are connected in parallel, the radius of the first gear (16) is larger than that of the second gear (17), the second gear (17) is meshed with the lower gear of the input rod (7) with the rack, and the first gear (16) is meshed with the upper output rod (5) with the rack; the output rod (5) with the rack, the duplicate gear (6), the input rod (7) with the rack and the input end guide gear (8) form a secondary displacement amplifying device;
an output rod (5) with a rack is connected with a damper device (9) through a connecting piece (18), the damper device (9) is fixed through a damper fixing support (11), the other end of the damper device (9) is connected with a damper connecting piece (10) through a fixing rotating hinge (14), and the damper connecting piece (10) is fixedly connected with a lower floor beam (21) through a fifth group of bolts (19); relative displacement between floors of the building is transmitted to a displacement amplification rod (3) through a vertical movable displacement support (1) fixedly connected with a floor beam, and the relative displacement between the floors of the building is amplified for the first time through the amplification effect of the displacement amplification rod (3); the lower end of the displacement amplification rod (3) is hinged with an input rod (7) with a rack through a movable axis hinge (12), and the input rod (7) with the rack generates axial reciprocating displacement due to the first amplification of the displacement; therefore, the duplicate gear (6) rotates, the second gear (17) is meshed with the input rod (7) with the rack to rotate, meanwhile, the rotation of the second gear (17) drives the first gear (16) to rotate, the first gear (16) is meshed with the output rod (5) with the rack to rotate, axial reciprocating movement displacement is generated, and the displacement is amplified for the second time through the amplification effect of the duplicate gear (6); therefore, the outer cylinder of the damper device (9) generates secondary amplified relative displacement, and the damping material in the damper device (9) prevents the relative displacement to generate more effective damping force.
2. The damper of an efficient space utilization type end part straight-bracing secondary displacement amplifying device as claimed in claim 1, wherein the displacement amplifying rod (3) is a thin steel rod with three bolt holes, which are a proximal bolt hole, a middle bolt hole and a distal bolt hole, respectively; a middle bolt hole is hinged with the T-shaped overhanging positioning bracket (4) through a fixed axis, a near-end bolt hole is hinged with the T-shaped connecting plate (2) through a moving axis, and a far-end bolt hole is hinged with an input rod (7) with a rack through a moving axis; the distance between the far-end bolt hole and the middle bolt hole and the distance ratio between the near-end bolt hole and the middle bolt hole are adjusted to be controlled to be 2-5 times, namely, the interlayer relative displacement generated by the upper floor beam (22) is transmitted to the displacement amplification rod through the vertical type displacement support (1), and the initial interlayer displacement is amplified by 2-5 times under the amplification effect of the displacement amplification rod (3) to achieve the first displacement amplification.
3. The damper of the end direct-bracing secondary displacement amplifying device with high efficiency and space utilization according to claim 1, wherein the lower part of the input rod (7) with the rack is fixedly provided with an input end guide gear (8) which is fixedly connected with a lower floor beam (21), so as to ensure that the path is kept stable when the input rod (7) with the rack performs axial reciprocating motion, thereby enabling a duplicate gear (6) to rotate to drive an output rod (5) with the rack to perform axial reciprocating motion and transmit the displacement to the damper device (9), the tooth pitches of the first gear (16) and the second gear (17) are the same, the ratio of the radius of the first gear to the radius of the second gear is controlled to control the amplification factor to be between 2 and 5 times, namely, the first amplification displacement transmitted by the input rod with the rack rotates for a certain angle through the second gear (17) wheel, meanwhile, the first gear (16) rotates by the same angle, and the arc length formula obtains S ═ alpha × R, so that the radian-invariant radius and the arc length are in a linear relation, namely the displacement of the second time is 2-5 times of the displacement of the first time, and the effect of the amplification factor of the second time is achieved; the result of two displacement enlargements is a power relation, namely, the relative displacement between layers reaches 4 to 25 times of the initial relative displacement through two displacement enlargements.
4. The damper of the efficient space utilization type end-part directly-supported secondary displacement amplifying device as claimed in claim 1, wherein the lower part of the input rod (7) with the rack is fixedly connected with the input end guide gear (8) and the floor beam, so as to ensure that the path is kept stable when the input rod (7) with the rack makes the axial reciprocating motion, thereby enabling the duplicate gear (6) to rotate to drive the output rod (5) with the rack to make the axial reciprocating motion, and transmitting the displacement to the damper device (9), i.e. the amplification of the duplicate gear can further achieve the amplification effect by changing the tooth pitches of the first gear (16) and the second gear (17) under the condition that the radius of the first gear is fixed with the radius of the second gear, i.e. the tooth pitch of the second gear (17) is controlled to be increased, and the tooth pitch of the first gear (16) is not changed, when the first amplification displacement is transmitted to the second gear (17), the second gear (17) rotates by a larger angle before the tooth pitch is not increased, and then the arc length formula can obtain that S ═ A × R can increase, namely the second amplification displacement is actually amplified in two different modes to achieve the second displacement amplification; s represents arc length, alpha represents rotation angle, and R is gear radius.
5. The damper of a highly efficient space-utilizing end braced secondary displacement amplifying device as claimed in claim 1, wherein the lower part of the T-shaped link plate (2) is hinged to the proximal end of the displacement amplifying rod (3) by a fixed axial hinge (12), i.e. the ratio of the distance from the center of the hinge circular hole to the upper edge of the lower floor beam (21) to the vertical distance from the center of the hinge circular hole to the lower edge of the upper floor beam (22) is controlled between 1/6-1/4.
6. The damper of an end portion direct-bracing secondary displacement amplifying device with high efficiency and space utilization as claimed in claim 1, wherein the ratio of the distance from said t-shaped overhanging positioning bracket (4) to one end of the damper device (9) to the distance from said t-shaped overhanging positioning bracket (4) to the other end is controlled between 1/4-1/3.
7. The damper of an efficient space utilization type end direct-bracing secondary displacement amplifying device as claimed in claim 1, wherein said duplicate gear (6) is fixed by a support.
8. The damper of an end portion direct-bracing secondary displacement amplifying device with high efficiency and space utilization as claimed in claim 1, wherein the input end guide gear (8) can be replaced by a pulley, i.e., the input rod (7) with rack adopts a device with upper rack and lower smooth.
9. The damper of an efficient space utilization type end-part directly-supported secondary displacement amplifying device as claimed in claim 1, wherein said damper means (9) is a viscoelastic damper or a viscous damper or a friction type damper.
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| CN201810248231.2A CN108643666B (en) | 2018-03-24 | 2018-03-24 | Damper of efficient space utilization type end direct-support secondary displacement amplification device |
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| CN201810248231.2A CN108643666B (en) | 2018-03-24 | 2018-03-24 | Damper of efficient space utilization type end direct-support secondary displacement amplification device |
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| CN109208460B (en) * | 2018-10-22 | 2020-03-20 | 北方民族大学 | Bridge anti-seismic device convenient to maintain |
| CN109403493B (en) * | 2018-11-22 | 2023-07-25 | 华中科技大学 | Double-shear supporting damper system with displacement amplification and vibration reduction efficiency evaluation method |
| CN109826480B (en) * | 2019-02-28 | 2020-08-11 | 长安大学 | One-way damping hinge device and method for carrying out structure passive vibration control by applying same |
| CN110056235B (en) * | 2019-03-19 | 2021-08-10 | 上海大学 | Displacement amplification corrugated web damper |
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| CN111456219B (en) * | 2020-03-27 | 2021-09-24 | 广州大学 | Damping corridor of bent lever type double-tower high-rise building |
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| CN112523376B (en) * | 2020-11-06 | 2021-12-03 | 北京工业大学 | Self-resetting composite energy dissipation support for expanding displacement by using gear and opening inhaul cable by using pulley |
| CN113073748B (en) * | 2021-03-16 | 2022-09-09 | 北京工业大学 | Composite energy consumption system with displacement secondary amplification and triggering self-resetting functions |
| CN113775069B (en) * | 2021-08-20 | 2022-10-18 | 北京工业大学 | Energy dissipation support with displacement amplification and repeated disassembly and assembly functions |
| CN114197677A (en) * | 2021-12-27 | 2022-03-18 | 西南交通大学 | Viscous damper based on displacement amplification |
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| AU2001275493A1 (en) * | 2000-06-16 | 2002-01-02 | Stefano Berton | Displacement amplification method and apparatus for passive energy dissipation in seismic applications |
| CN102587532A (en) * | 2012-03-13 | 2012-07-18 | 上海材料研究所 | Device for amplifying energy consumption effect of damper |
| JP2014101638A (en) * | 2012-11-16 | 2014-06-05 | Asahi Kasei Homes Co | Vibration control structure |
| CN203160446U (en) * | 2012-12-20 | 2013-08-28 | 上海大学 | Viscous damper provided with double rod type speed and displacement amplification device |
| CN104727457B (en) * | 2015-03-24 | 2017-07-25 | 上海大学 | A kind of variable damper displacement speed amplifying device of enlargement ratio |
| CN105239695B (en) * | 2015-11-09 | 2017-10-24 | 同济大学建筑设计研究院(集团)有限公司 | A kind of toggle joint type deforms amplifying device |
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