CN106988594B - Displacement amplification type friction damper and assembly construction process - Google Patents
Displacement amplification type friction damper and assembly construction process Download PDFInfo
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- CN106988594B CN106988594B CN201710403353.XA CN201710403353A CN106988594B CN 106988594 B CN106988594 B CN 106988594B CN 201710403353 A CN201710403353 A CN 201710403353A CN 106988594 B CN106988594 B CN 106988594B
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- angle steel
- gear
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- plate
- rack
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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 belongs to the technical field of civil engineering, and relates to a displacement amplification type friction damper and an assembly construction process. The mainboard is located down between angle steel, the back angle steel of connecting plate and separation arrangement, and lower friction disc pastes in the upper surface of connecting plate down, and two last friction discs paste respectively in the lower surface of back angle steel and preceding angle steel, and triple gear, last rack, lower rack and bi-level are located back angle steel and preceding angle steel in the middle, and lower rack welding is in the mainboard upper surface, goes up the rack welding in bi-level lower surface, and U-shaped connecting piece welds in bi-level end. The displacement amplification type friction damper amplifies the sliding friction displacement of the damper by utilizing the gear transmission theory, and has strong energy consumption capability.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and relates to an energy dissipation and shock absorption device, in particular to a friction damper for amplifying displacement through gears.
Background
The energy dissipation and shock absorption technology is to connect dampers in parallel in the side force resisting component of the structure, and most of earthquake energy is consumed by the dampers, so that the safety of the main structure is ensured, and the energy dissipation and shock absorption technology is an active and effective anti-seismic strategy. The displacement of the existing damper is generally equal to the relative displacement of the connecting point when the damper works, so the damper is preferably arranged at a position with larger relative deformation of the structure, for example, the structure is small in relative deformation, and the damper cannot effectively exert the energy consumption function due to small displacement. To this end, the scholars have developed new techniques to make the displacement of the damper larger than the relative displacement of the connection point, such as: the patent with the publication number of CN 104314192A discloses a damper with a displacement amplifying device, namely, the displacement of the damper is increased by utilizing the lever principle, but the lever transmission efficiency is lower, and the larger displacement can be obtained only when the size of the damper is large, so that the inconvenience of installation and construction is caused, and the using function of a building is also influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the displacement amplification type friction damper which can realize the relative displacement of the working displacement of the damper which is larger than the connecting point by utilizing the gear transmission principle in the earthquake, has good energy consumption capability, and has simple structure and convenient installation.
The technical scheme adopted for solving the technical problems is as follows:
the displacement amplifying type friction damper comprises a lower connecting plate, a lower friction plate, a main plate, an upper rear friction plate, an upper front friction plate, rear angle steel, front angle steel, a lower rack, a triple gear, a double connecting rod, an upper rack, a U-shaped connecting piece, a high-strength bolt, a limit bolt, a gear rotating shaft and a positioning pin; the main board is positioned between the lower connecting plate and the front angle steel and the rear angle steel which are separately arranged, the lower friction plate is stuck on the upper surface of the lower connecting plate by epoxy resin, the upper rear friction plate and the upper front friction plate are respectively stuck on the lower surfaces of the rear angle steel and the front angle steel by epoxy resin, and the high-strength bolts are used for connecting the lower connecting plate stuck with the lower friction plate, the main board, the rear angle steel stuck with the upper rear friction plate and the front angle steel stuck with the upper front friction plate; the triple gear, the upper rack, the lower rack and the double-link are positioned between the rear angle steel and the front angle steel, the gear rotating shaft penetrates through the front angle steel, the triple gear and the rear angle steel, the locating pin and the limit bolt penetrate through the front angle steel, the double-link and the rear angle steel, the lower rack is welded on the upper surface of the main board, the upper rack is welded on the lower surface of the double-link, and the U-shaped connecting piece is welded at the end part of the double-link.
The triple gear is composed of a first gear and a second gear, the radius of the first gear is larger than that of the second gear, the first gear is meshed with the lower rack, and the second gear is meshed with the upper rack.
The displacement amplification type friction damper comprises two functional units, namely a friction unit and a gear transmission unit. The friction unit consists of a lower connecting plate, a lower friction plate, a main plate, an upper rear friction plate, an upper front friction plate, rear angle steel, front angle steel and a high-strength bolt; the gear transmission unit consists of a lower rack, a triple gear, a double connecting rod, an upper rack, a U-shaped connecting piece, a gear rotating shaft and a limit bolt. The working principle of the displacement amplification type friction damper is as follows:
(1) the high-strength bolt connects the lower connecting plate adhered with the lower friction plate, the main board, the rear angle steel adhered with the upper rear friction plate and the front angle steel adhered with the upper front friction plate, and the friction force of the friction unit can be adjusted by applying positive pressure.
(2) Under the action of load, the double connecting rods welded with the upper rack move, and the upper rack drives the second gear to rotate so as to drive the triple gear to rotate; when the meshing force of the first gear and the lower rack is larger than the maximum static friction force of the friction unit, the main board welded with the lower rack can slide relatively with the lower connecting plate adhered with the lower friction plate, the front angle steel adhered with the upper front friction plate and the rear angle steel adhered with the upper rear friction plate to generate friction force to dissipate energy. Since the first gear and the second gear have the same angular velocity, let r 1 And r 2 Respectively representing the radius of the first gear and the radius of the second gear, and knowing the ratio of the sliding displacement of the friction unit to the displacement of the double connecting rods is r according to the gear transmission principle 1 /r 2 The displacement amplifying function of the displacement amplifying type friction damper is realized.
The beneficial effects of the invention are as follows: (1) the displacement amplification type friction damper amplifies the sliding friction displacement of the damper by utilizing the gear transmission principle, and has the advantages of strong energy consumption and stable working performance; (2) the displacement amplification type friction damper is made of steel except for friction plates, and is convenient to manufacture and low in cost through bolting and welding; (3) the displacement amplification type friction damper is connected with the engineering structure through bolts and bolts, is convenient to construct and is easy to overhaul and replace.
Drawings
Fig. 1 is a schematic view of a displacement-amplified friction damper.
Fig. 2 is a schematic view of the friction unit of fig. 1.
Fig. 3 is a schematic view of the gear transmission unit of fig. 1.
Fig. 4 is a schematic view of the lower web of fig. 1.
Fig. 5 is a schematic view of the lower friction plate of fig. 1.
Fig. 6 is a schematic diagram of the motherboard of fig. 1.
FIG. 7 is a schematic view of the upper rear friction plate of FIG. 1.
FIG. 8 is a schematic view of the upper front friction plate of FIG. 1.
Fig. 9 is a schematic view of the rear angle of fig. 1.
Fig. 10 is a schematic view of the front angle of fig. 1.
Fig. 11 is a schematic view of the lower rack of fig. 1.
Fig. 12 is a schematic view of the triple gear of fig. 1.
Fig. 13 is a schematic view of the upper rack of fig. 3.
Fig. 14 is a schematic view of the double link of fig. 1 welded with a U-shaped connector.
Fig. 15 is a schematic view of the gear shaft of fig. 1.
FIG. 16 is a schematic view of the dowel of FIG. 1
In the figure, the connecting plate comprises a lower connecting plate 1, a lower friction plate 2, a main plate 3, an upper rear friction plate 4, an upper front friction plate 5, a rear angle steel 6, a front angle steel 7, a lower rack 8, a triple gear 9, a double connecting rod 10, an upper rack 11, a U-shaped connecting piece 12, a high-strength bolt 13, a limit bolt 14, a gear rotating shaft 15, a locating pin 16, a lower connecting plate bolt hole 401, a lower connecting plate fixing bolt hole 402, a lower friction plate bolt hole 501, a main plate long slot hole 601, an upper rear friction plate bolt hole 701, an upper front friction plate bolt hole 801, a rear angle steel limit hole 901, a rear angle steel pivot hole 902, a rear angle steel bolt hole 903, a rear angle steel locating hole 904, a front angle steel limit hole 1001-front angle steel limit hole 1002, a front angle steel pivot hole 1003-front angle steel bolt hole 1004, a front angle steel locating hole 1201-first gear 1202-a second gear, a double connecting plate fixing bolt hole 1201-double connecting rod limit hole, a double connecting rod fixing hole 1401-fixing bolt hole, a double connecting rod fixing hole used for the main plate, a left angle steel, a fixing bolt hole used for fixing, a left.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
According to the displacement amplifying type friction damper shown in fig. 1 and 3, the displacement amplifying type friction damper comprises a lower connecting plate 1, a lower friction plate 2, a main plate 3, an upper rear friction plate 4, an upper front friction plate 5, a rear angle steel 6, a front angle steel 7, a lower rack 8, a triple gear 9, a double connecting rod 10, an upper rack 11, a U-shaped connecting piece 12, a high-strength bolt 13, a limit bolt 14, a gear rotating shaft 15 and a positioning pin 16.
As shown in fig. 2, 4, 5, 6, 7, 8, 9 and 10, two high-strength bolts 13 pass through the rear angle steel bolt holes 903, the upper rear friction plate bolt holes 701, the main plate long slot holes 601, the lower friction plate bolt holes 501 and the lower connection plate bolt holes 401, and the other two high-strength bolts 13 pass through the front angle steel bolt holes 1003, the upper front friction plate bolt holes 801, the main plate long slot holes 601, the lower friction plate bolt holes 501 and the lower connection plate bolt holes 401.
According to fig. 1, 3, 11, 12, 13 and 15, the triple gear 9 is composed of a first gear 1201 and a second gear 1202, the radius of the first gear 1201 is larger than that of the second gear 1202, the first gear 1201 is meshed with a lower rack 8, the second gear 1202 is meshed with an upper rack 11, the lower rack 8 is welded on the upper surface of the main plate 3, the upper rack 11 is welded on the lower surface of the double link 10, and the gear rotating shaft 15 passes through a front angle steel rotating shaft hole 1002, a triple gear center shaft hole 1203 and a rear angle steel rotating shaft hole 902.
As shown in fig. 1, 14 and 16, the double link 10 is located intermediate the rear angle 6 and the front angle 7. The positioning pin 16 passes through the front angle steel positioning hole 1004, the double-link positioning hole 1403 and the rear angle steel positioning hole 904, and the two limiting bolts 14 pass through the front angle steel limiting hole 1001, the double-link limiting hole 1401 and the rear angle steel limiting hole 901.
According to fig. 2, 5, 7, 8, 9 and 10, the lower friction plate 2 is adhered to the upper surface of the lower connecting plate 1 by epoxy resin, the upper rear friction plate 4 and the upper front friction plate 5 are respectively adhered to the lower surfaces of the rear angle steel 6 and the front angle steel 7 by epoxy resin, the upper rear friction plate 4 and the upper front friction plate 5 are identical in structure and size, and the rear angle steel 6 and the front angle steel 7 are identical in structure and size.
The assembly construction process of the displacement amplification type friction damper is as follows:
(1) the lower friction plate 2 is stuck to the upper surface of the lower connecting plate 1 by adopting epoxy resin, and the upper rear friction plate 4 and the upper front friction plate 5 are respectively stuck to the lower surfaces of the rear angle steel 6 and the front angle steel 7; the lower rack 8 is welded on the upper surface of the main board 3, and the upper rack 11 is welded on the lower surface of the double connecting rod 10; welding the U-shaped connector 12 to the end of the double link 10;
(2) two high-strength bolts 13 pass through the rear angle steel bolt holes 903, the upper rear friction plate bolt holes 701, the main plate long slot holes 601, the lower friction plate bolt holes 501 and the lower connecting plate bolt holes 401, the other two high-strength bolts 13 pass through the front angle steel bolt holes 1003, the upper front friction plate bolt holes 801, the main plate long slot holes 601, the lower friction plate bolt holes 501 and the lower connecting plate bolt holes 401, the hole centers of all the components are coaxial, and the high-strength bolts 13 are pre-tightened to apply positive pressure;
(3) the triple gear 9 is positioned between the rear angle steel 6 and the front angle steel 7, the gear rotating shaft 15 passes through the front angle steel rotating shaft hole 1002, the triple gear middle shaft hole 1203 and the rear angle steel rotating shaft hole 902 and is fixed by nuts, and the first gear 1201 is meshed with the lower rack 8;
(4) the double connecting rod 10 is positioned between the rear angle steel 6 and the front angle steel 7, the positioning pin 16 passes through the front angle steel positioning hole 1004, the double connecting rod positioning hole 1403 and the rear angle steel positioning hole 904, the two limiting bolts 14 pass through the front angle steel limiting hole 1001, the double connecting rod limiting hole 1401 and the rear angle steel limiting hole 901, and the second gear 1202 is meshed with the upper rack 11 welded on the lower surface of the double connecting rod 10;
(5) the displacement amplification type friction damper lower connecting plate 1 is connected with the engineering structure through a lower connecting plate fixing bolt hole 402 by bolts, and the U-shaped connecting piece 12 is connected with the engineering structure by bolts through bolt holes 1402;
(6) the positioning pin 16 is pulled out and put into an operable state.
Claims (2)
1. Displacement amplification type friction damper, its characterized in that: the novel friction plate comprises a lower connecting plate (1), a lower friction plate (2), a main plate (3), an upper rear friction plate (4), an upper front friction plate (5), a rear angle steel (6), a front angle steel (7), a lower rack (8), a triple gear (9), a double connecting rod (10), an upper rack (11), a U-shaped connecting piece (12), a high-strength bolt (13), a limit bolt (14), a gear rotating shaft (15) and a locating pin (16); the main board (3) is positioned between the lower connecting plate (1) and the front angle steel (7) and the rear angle steel (6) which are separately arranged, the lower friction plate (2) is stuck on the upper surface of the lower connecting plate (1) by epoxy resin, the upper rear friction plate (4) and the upper front friction plate (5) are respectively stuck on the lower surfaces of the rear angle steel (6) and the front angle steel (7) by epoxy resin, and the lower connecting plate (1) stuck with the lower friction plate (2), the main board (3), the rear angle steel (6) stuck with the upper rear friction plate (4) and the front angle steel (7) stuck with the upper front friction plate (5) are connected by high-strength bolts (13); the triple gear (9), the upper rack (11), the lower rack (8) and the double connecting rod (10) are positioned between the rear angle steel (6) and the front angle steel (7), the gear rotating shaft (15) penetrates through the front angle steel (7), the triple gear (9) and the rear angle steel (6), and the positioning pin (16) and the limiting bolt (14) penetrate through the front angle steel (7), the double connecting rod (10) and the rear angle steel (6) respectively; the triple gear (9) is composed of a first gear (1201) and a second gear (1202), the radius of the first gear (1201) is larger than that of the second gear (1202), the first gear (1201) is meshed with the lower rack (8), and the second gear (1202) is meshed with the upper rack (11); the lower rack (8) is welded on the upper surface of the main board (3), and the upper rack (11) is welded on the lower surface of the double connecting rod (10); the U-shaped connecting piece (12) is welded at the end part of the double connecting rod (10); the double connecting rod (10) is positioned on the inner sides of the front angle steel (7) and the rear angle steel (6), the positioning pin (16) penetrates through the front angle steel positioning hole (1004), the double connecting rod positioning hole (1403) and the rear angle steel positioning hole (904), and the limiting bolt (14) penetrates through the front angle steel limiting hole (1001), the double connecting rod limiting hole (1401) and the rear angle steel limiting hole (901).
2. The assembly construction method of a displacement amplification type friction damper according to claim 1, characterized in that:
(1) the lower friction plate (2) is stuck to the upper surface of the lower connecting plate (1) by epoxy resin, the upper rear friction plate (4) and the upper front friction plate (5) are respectively stuck to the lower surfaces of the rear angle steel (6) and the front angle steel (7), the lower rack (8) is welded to the upper surface of the main board (3), the upper rack (11) is welded to the lower surface of the double connecting rod (10), and the U-shaped connecting piece (12) is welded to the end part of the double connecting rod (10);
(2) two high-strength bolts (13) penetrate through rear angle steel bolt holes (903), upper rear friction plate bolt holes (701), main plate long slot holes (601), lower friction plate bolt holes (501) and lower connecting plate bolt holes (401), the other two high-strength bolts (13) penetrate through front angle steel bolt holes (1003), upper front friction plate bolt holes (801), main plate long slot holes (601), lower friction plate bolt holes (501) and lower connecting plate bolt holes (401), hole site centers of all components are coaxial, and positive pressure is applied by pre-tightening of the high-strength bolts (13);
(3) the triple gear (9) is positioned between the rear angle steel (6) and the front angle steel (7), the gear rotating shaft (15) passes through the front angle steel rotating shaft hole (1002), the triple gear middle shaft hole (1203) and the rear angle steel rotating shaft hole (902) and is fixed by nuts, and the first gear (1201) is meshed with the lower rack (8);
(4) the double connecting rod (10) is positioned between the rear angle steel (6) and the front angle steel (7), the positioning pin (16) passes through the front angle steel positioning hole (1004), the double connecting rod positioning hole (1403) and the rear angle steel positioning hole (904), the two limiting bolts (14) pass through the front angle steel limiting hole (1001), the double connecting rod limiting hole (1401) and the rear angle steel limiting hole (901), and the second gear (1202) is meshed with the upper rack (11) welded on the lower surface of the double connecting rod (10);
(5) the displacement amplification type friction damper lower connecting plate (1) is connected with the engineering structure through a lower connecting plate fixing bolt hole (402), and the U-shaped connecting piece (12) is connected with the engineering structure through a pin bolt hole (1402);
(6) the positioning pin (16) is pulled out to enter an operable state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710403353.XA CN106988594B (en) | 2017-05-27 | 2017-05-27 | Displacement amplification type friction damper and assembly construction process |
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| CN201710403353.XA CN106988594B (en) | 2017-05-27 | 2017-05-27 | Displacement amplification type friction damper and assembly construction process |
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| CN106988594A CN106988594A (en) | 2017-07-28 |
| CN106988594B true CN106988594B (en) | 2023-09-22 |
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| CN112459586A (en) * | 2020-11-26 | 2021-03-09 | 北京工业大学 | Displacement amplification type damper |
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| CN114922305B (en) * | 2022-06-13 | 2023-09-12 | 北京工业大学 | Small swing transmission amplifying energy consumption resetting damping device |
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