CN214033346U - Horizontal omnidirectional displacement amplification type friction damper - Google Patents
Horizontal omnidirectional displacement amplification type friction damper Download PDFInfo
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- CN214033346U CN214033346U CN202022212942.XU CN202022212942U CN214033346U CN 214033346 U CN214033346 U CN 214033346U CN 202022212942 U CN202022212942 U CN 202022212942U CN 214033346 U CN214033346 U CN 214033346U
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Abstract
The utility model provides a horizontal omnidirectional displacement amplification type friction damper mainly is applied to bridge structures's power consumption shock attenuation, belongs to structural vibration control technical field. The device comprises a top plate, a bottom plate, a hollow prismatic table, a high-strength bolt, a spherical hinge fixing device, a separable gourd-shaped rotating ball body, a lever arm, a spherical steel plate and a friction plate. The device can still keep a good working state under the random multidimensional earthquake action by means of the universal rotation capability and the separable performance of the 'gourd-shaped' rotating ball body which can be separated in a sliding way, and consumes energy by utilizing the friction energy-consuming material characteristic of the device, thereby providing multidimensional effective damping. Meanwhile, the device amplifies the relative displacement of the bridge structure pier beam through the lever spherical hinge rotating mechanism, and ensures that the device can play a good energy consumption role under different levels of earthquake action. The utility model discloses rational in infrastructure, safe and reliable is a nimble, efficient power consumption attenuator.
Description
Technical Field
The utility model relates to a be applied to civil engineering's horizontal omnidirectional displacement amplification type friction damper based on two ball pivot of slidable separation belongs to structural vibration control technical field, in particular to bridge structures beam bottom power consumption damping component's displacement amplification type friction damper device.
Background
In recent times, earthquakes frequently occur, and a lot of influences are brought to the life of people. However, China is a multi-earthquake country, and since the country is built, China has experienced dozens of times of large and small earthquakes, wherein the more serious are Wenchuan earthquake and Tangshan earthquake. The earthquake damage has a common characteristic that the bridge structure of the earthquake area is seriously damaged. The bridge is used as a key lifeline project for post-disaster rescue, and is greatly damaged, so that rescue troops cannot reach the first line of a disaster area in time, and huge losses are brought to the life and property of the country, the society and people. Therefore, how to improve the anti-seismic performance of the bridge is always a concern for researchers.
The bridge damping device with reliable research is an effective means for reducing bridge earthquake disasters, the damping design is made, and the research and development of the energy dissipation damping device which is simple, convenient, economical and efficient is a key problem of the bridge damping design. In the last two decades, the study and application of energy dissipation and shock absorption technology have attracted the attention of students in all countries in the world, but the study of energy dissipation and shock absorption devices by the students in all countries is mostly single in direction, only can provide damping in a certain direction, and cannot be well adapted to the actual random multi-dimensional earthquake action.
At present, most energy dissipation and shock absorption devices are equal to the relative speed and displacement of a connecting point when working, and if working under the condition of small relative speed and displacement, the energy dissipation and shock absorption devices cannot well exert energy dissipation and shock absorption capacity and cannot achieve expected energy dissipation effects. At present, most of people usually increase the number and size of dampers in order to increase the energy consumption capability of the dampers, which not only brings poor benefit, but also causes waste to a certain extent.
Therefore, how to provide an energy-consuming and vibration-damping device with high efficiency and remarkable energy-consuming effect in multiple dimensions is a problem that needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a horizontal omnidirectional displacement amplification type friction damper based on two ball pivot of slidable separation, its purpose is to realize providing multidirectional effective damping's ability under the effect of actual random multidimension earthquake, can enlarge the relative less deformation that produces between the connected component under the external load effect as required simultaneously, utilizes the friction energy dissipation material (like brass etc.) characteristic to carry out high-efficient power consumption.
In order to realize the purpose, the utility model discloses a technical scheme:
a horizontal omnidirectional displacement amplification type friction damper comprises a top plate 1, a bottom plate 2, an upper hollow prismatic table 3, a spherical hinge fixing device A4, a high-strength bolt A5, a high-strength bolt B6, a spherical hinge fixing device B7, a separable gourd-shaped rotating sphere 8, a lower lever arm 9, an upper lever arm 10, a lower hollow prismatic table 11, a spherical steel plate B12, a lower friction plate 13, a spherical steel plate A14 and an upper friction plate 15;
the middle parts of the inner surfaces of the top plate 1 and the bottom plate 2 are provided with grooves; the top plate 1 is connected with the upper end of the upper hollow frustum 3 through eight high-strength bolts A5, and the lower end of the upper hollow frustum 3 is fixedly connected with the spherical hinge fixing device A4 through eight high-strength bolts B6; the upper end of the lower hollow prismatic table 11 is fixedly connected with a spherical hinge fixing device B7 through eight high-strength bolts B6; the upper sphere and the lower sphere of the separable gourd-shaped rotating sphere 8 are respectively arranged in a spherical hinge fixing device A4 and a spherical hinge fixing device B7; the upper end of a separable gourd-shaped rotating sphere 8 is connected with the lower end of an upper lever arm 10 in a welding mode; the lower end of a separable gourd-shaped rotating sphere 8 is connected with the upper end of a lower lever arm 9 in a welding mode; the upper end of the upper lever arm 10 is fixedly connected with a spherical steel plate A14 through a bolt hole cavity on the spherical steel plate A14, and the spherical steel plate A14 is tightly attached to the upper friction plate 15; a groove is formed in the inner surface of the top plate 1, and the upper friction plate 15 is embedded into the groove; the lower end of the lower lever arm 9 is connected with a spherical steel plate B12 through a bolt hole cavity, and the spherical steel plate B12 is tightly attached to the lower friction plate 13; the inner surface of the bottom plate 2 is provided with a groove, the lower friction plate 13 is embedded into the groove, and the bottom plate 2 is connected with the lower hollow prismatic table 11 through eight high-strength bolts A4; the top plate 1 and the bottom plate 2 are respectively connected with the bridge structure through four high-strength bolts.
The separable gourd-shaped rotating ball body 8 is pulled together by two single spherical hinges through a specific spring pull rod, when the damper works, the top plate and the bottom plate are dislocated, the gourd-shaped rotating ball body also rotates along with the rotation, and the rotation can lead the gourd-shaped rotating ball body to incline, so that the vertical height in an initial state is reduced, at the moment, the separable gourd-shaped rotating ball body 8 can be properly separated under the elastic fixation of the internal spring pull rod, so that the problem of height change caused by the dislocation of the upper part and the lower part of the device is solved, and the damper is prevented from being unnecessarily damaged during working; the spherical hinge fixing device is formed by splicing a left spherical hinge fixing device and a right spherical hinge fixing device; the spherical hinge fixing device A4 and the spherical hinge fixing device B7 are made of the same material, have the same shape and have the same size; the upper end of the upper lever arm 10 and the lower end of the lower lever arm 9 are provided with threads.
When the building structure drives the top plate 1 to do horizontal motion, the displacement response is amplified through a lever spherical hinge rotating mechanism of the device and is transmitted to the upper end of the upper lever arm 10 and the lower end of the lower lever arm 9, the connected steel plates and the friction plates are respectively driven to generate relative displacement, additional rigidity and damping are provided for the structure by means of friction energy consumption characteristics, and therefore the power response of the structure is reduced, and the purpose of shock absorption is achieved.
The lever spherical hinge rotating mechanism consisting of the lever and the double sliding separation spherical hinges not only amplifies the displacement response by b/a times and transmits the amplified displacement response to the upper end of the upper lever arm 10, but also amplifies the displacement response by c/a times and transmits the amplified displacement response to the lower end of the lower lever arm 9, so that the relative displacement between the steel plate and the friction plate is increased, and the energy consumption capacity of the damper is improved; wherein a is the distance from the lower sphere center to the upper sphere center of the separable gourd-shaped rotating sphere 8; b is the distance from the center of the lower part of the separable gourd-shaped rotating sphere 8 to the upper end of the upper lever arm 10; c is the distance from the lower center of the separable gourd-shaped rotating sphere 8 to the lower end of the lower lever arm 9.
The utility model has the advantages that:
1. the utility model discloses can provide multidirectional effective damping, adapt to the power consumption requirement of multidimension earthquake effect.
2. The utility model discloses possess the response and amplify the technique, utilize lever principle to amplify bridge construction mound roof beam relative displacement, and then make the response such as displacement, speed of series connection power consumption material amplify, guaranteed to play good power consumption ability under the effect of medium and small shake;
3. the utility model discloses a detachable "calabash type" rotates spheroid structure can solve the produced vertical altitude variation problem of the dislocation that the device took place at the during operation well, prevents that the attenuator during operation from taking place unnecessary and destroying.
4. The utility model discloses used viscoelastic energy consumption material's hysteresis curve is level and smooth ellipse, possesses good space deformability and stabilizes the power consumption ability.
5. The utility model discloses an energy consumption magnification can adjust according to structural component's actual conditions, through changing lever power arm ratio adjustment energy consumption magnification, reaches the purpose of adjusting the power consumption effect.
6. The utility model discloses the structure is clear and definite, safe and reliable, the suitability is strong, convenient, the batch production of being convenient for of construction of drawing materials, through reasonable mechanical design, possess efficient power consumption ability and structural performance, have wide application prospect and promote market.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a horizontal omnidirectional displacement amplification type friction damper provided in an embodiment of the present invention;
fig. 2 is a sectional view of a section a-a of a horizontal omnidirectional displacement amplification type friction damper according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a horizontal omnidirectional displacement amplification type friction damper according to an embodiment of the present invention;
fig. 4 is a schematic view of a separable gourd-shaped rotating sphere of a horizontal omnidirectional displacement amplification type friction damper according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a deformation of a horizontal omnidirectional displacement amplification type friction damper according to an embodiment of the present invention;
fig. 6 is a schematic view of the installation position of the horizontal omnidirectional displacement amplification type friction damper applied to the bridge structure.
In the figure: 1 top plate, 2 bottom plate, 3 upper hollow prismatic table, 4 spherical hinge fixing device A, 5 high-strength bolt A, 6 high-strength bolt B, 7 spherical hinge fixing device B, 8 separable gourd-shaped rotating sphere, 9 lower lever arm, 10 upper lever arm, 11 lower hollow prismatic table, 12 spherical steel plate B, 13 lower friction plate, 14 spherical steel plate A, 15 upper friction plate.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-4, the present invention provides an embodiment of a horizontal omnidirectional displacement amplification type friction damper, which comprises a top plate 1 and a bottom plate 2 oppositely disposed from top to bottom, wherein a groove is disposed in the middle portion of the inner surface of the top plate 1 and the bottom plate 2, the top plate 1 is connected with an upper hollow prismatic table 3 through eight high-strength bolts a5, and the lower end of the upper hollow prismatic table 3 is connected and fixed with a spherical hinge fixing device a4 through eight high-strength bolts B6; the upper end of the lower hollow prismatic table 11 is fixedly connected with a spherical hinge fixing device B7 through eight high-strength bolts B6; the upper sphere of the separable gourd-shaped rotating sphere 8 is arranged in the spherical hinge fixing device A4, and the lower sphere is arranged in the spherical hinge fixing device B7; the upper end of a separable gourd-shaped rotating sphere 8 is connected with the lower end of an upper lever arm 10 in a welding mode; the lower end of a separable gourd-shaped rotating sphere 8 is connected with the upper end of a lower lever arm 9 in a welding mode; the upper end of the upper lever arm 10 is fixedly connected with a spherical steel plate A14 through a bolt hole cavity on the spherical steel plate A14, and the spherical steel plate A14 is tightly attached to the upper friction plate 15; a groove is formed in the inner surface of the top plate 1, and the upper friction plate 15 is embedded into the groove; the lower end of the lower lever arm 9 is connected with a spherical steel plate B12 through a bolt hole cavity, and the spherical steel plate B12 is tightly attached to the lower friction plate 13; the inner surface of the bottom plate 2 is provided with a groove, the lower friction plate 13 is embedded into the groove, and the bottom plate 2 is connected with the lower hollow prismatic table 11 through eight high-strength bolts A4; the top plate 1 and the bottom plate 2 are respectively connected with the bridge structure through four high-strength bolts. The separable gourd-shaped rotating ball body 8 is pulled together by two single ball hinges through a specific spring pull rod, and can be separated along with the operation of the damper; the spherical hinge fixing device is formed by splicing a left spherical hinge fixing device and a right spherical hinge fixing device; the spherical hinge fixing device A4 and the spherical hinge fixing device B7 are made of the same material, have the same shape and have the same size; the upper end of the upper lever arm 10 and the lower end of the lower lever arm 9 are provided with threads. The top plate 1, the bottom plate 2, the upper hollow prismatic table 3, the spherical hinge fixing device A4, the high-strength bolt A5, the high-strength bolt B6, the spherical hinge fixing device B7, the separable gourd-shaped rotating sphere 8, the lower lever arm 9, the upper lever arm 10, the lower hollow prismatic table 11, the spherical steel plate B12 and the spherical steel plate A14 are all cast by carbon structural steel with higher strength.
As shown in figure 5, the utility model discloses during the use, under the effect of random earthquake, this damping device roof 1 and bottom plate 2 level take place the diastrophism, when roof 1 and bottom plate 2 take place relative displacement and be x, the corner of production is theta, lever ball pivot slewing mechanism not only transmits the last end of last lever arm 10 after amplifying approximate b/a times displacement response, and transmit the lower end of lower lever arm 9 after amplifying approximate c/a times displacement response, the last end of last lever arm 10 and the lower end of lower lever arm 9 drive the steel sheet that is connected respectively and produce relative movement with the friction disc, thereby rely on device friction power consumption characteristic, provide additional rigidity and damping for the structure, reduce the dynamic reaction of structure like this, with the purpose that realizes the shock attenuation. Wherein, the distance from the lower center of the gourd-shaped rotating sphere 8 to the upper center of the gourd-shaped rotating sphere is a, the distance from the lower center of the gourd-shaped rotating sphere to the upper end of the upper lever arm 10 is b, and the distance from the lower center of the gourd-shaped rotating sphere to the lower end of the lower lever arm 9 is c.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. A horizontal omnidirectional displacement amplification type friction damper is characterized by comprising a top plate (1), a bottom plate (2), an upper hollow prismatic table (3), a spherical hinge fixing device A (4), a spherical hinge fixing device B (7), a separable gourd-shaped rotating sphere (8), a lower lever arm (9), an upper lever arm (10), a lower hollow prismatic table (11), a spherical steel plate B (12), a lower friction plate (13), a spherical steel plate A (14) and an upper friction plate (15);
the middle parts of the inner surfaces of the top plate (1) and the bottom plate (2) are provided with grooves; the top plate (1) is connected with the upper end of the upper hollow prismatic table (3) through a high-strength bolt, and the lower end of the upper hollow prismatic table (3) is fixedly connected with the spherical hinge fixing device A (4) through a high-strength bolt; the bottom plate (2) is connected with the lower hollow prismatic table (11) through high-strength bolts, and the upper end of the lower hollow prismatic table (11) is fixedly connected with the spherical hinge fixing device B (7) through high-strength bolts; the upper sphere and the lower sphere of the separable gourd-shaped rotating sphere (8) are respectively arranged in the spherical hinge fixing device A (4) and the spherical hinge fixing device B (7); the upper end of a separable gourd-shaped rotating sphere (8) is connected with the lower end of an upper lever arm (10); the lower end of a separable gourd-shaped rotating sphere (8) is connected with the upper end of a lower lever arm (9); the upper end of the upper lever arm (10) is connected with a spherical steel plate A (14) through a bolt hole cavity on the spherical steel plate A (14), the spherical steel plate A (14) is tightly attached to an upper friction plate (15), and the upper friction plate (15) is embedded into a groove of the top plate (1); the lower end of the lower lever arm (9) is connected with a spherical steel plate B (12) through a bolt hole cavity, the spherical steel plate B (12) is tightly attached to a lower friction plate (13), and the lower friction plate (13) is embedded into a groove of the bottom plate (2); the top plate (1) and the bottom plate (2) are respectively connected with the bridge structure through high-strength bolts.
2. The horizontal omnidirectional displacement amplification type friction damper as claimed in claim 1, wherein the separable "gourd-shaped" rotary sphere (8) is pulled together by two single spherical hinges through a spring pull rod, when the damper is in operation, the top plate (1) and the bottom plate (2) are dislocated, the separable "gourd-shaped" rotary sphere (8) also rotates along with the rotation, and the rotation can lead the separable "gourd-shaped" rotary sphere (8) to incline, thereby leading to the reduction of the vertical height in the initial state, at this time, the separable "gourd-shaped" rotary sphere (8) can be properly separated under the elastic fixation of the inner spring pull rod, thereby solving the problem of height change caused when the upper and lower parts of the damper are dislocated, and preventing the damper from unnecessary damage during operation.
3. The horizontal omnidirectional displacement amplification type friction damper as claimed in claim 1 or 2, wherein the spherical hinge fixing device is formed by splicing a left spherical hinge fixing device and a right spherical hinge fixing device; the spherical hinge fixing device A (4) and the spherical hinge fixing device B (7) are the same in material, shape and size.
4. The horizontal omnidirectional displacement amplification friction damper as recited in claim 1 or 2, wherein an upper end of the upper lever arm (10) and a lower end of the lower lever arm (9) are provided with threads.
5. A horizontal omnidirectional displacement amplification type friction damper according to claim 3, characterized in that the upper end of the upper lever arm (10) and the lower end of the lower lever arm (9) are provided with threads.
6. The horizontal omnidirectional displacement amplification type friction damper according to claim 1, 2 or 5, wherein the lever spherical hinge rotating mechanism composed of the lever and the slidably separable double spherical hinge not only amplifies the displacement response by b/a times and transmits the amplified displacement response to the upper end of the upper lever arm (10), but also amplifies the displacement response by c/a times and transmits the amplified displacement response to the lower end of the lower lever arm (9), thereby increasing the relative displacement between the steel plate and the friction plate and improving the energy consumption capability of the damper; wherein a is the distance from the lower spherical center to the upper spherical center of the separable gourd-shaped rotating sphere (8); b is the distance from the center of the lower part of the separable gourd-shaped rotating sphere (8) to the upper end of the upper lever arm (10); c is the distance from the lower center of the separable gourd-shaped rotating sphere (8) to the lower end of the lower lever arm (9).
7. The horizontal omnidirectional displacement amplification type friction damper according to claim 3, wherein the lever spherical hinge rotating mechanism composed of the lever and the slidably separable double spherical hinge not only amplifies the displacement response by b/a times and transmits the amplified displacement response to the upper end of the upper lever arm (10), but also amplifies the displacement response by c/a times and transmits the amplified displacement response to the lower end of the lower lever arm (9), thereby increasing the relative displacement between the steel plate and the friction plate and improving the energy consumption capability of the damper; wherein a is the distance from the lower spherical center to the upper spherical center of the separable gourd-shaped rotating sphere (8); b is the distance from the center of the lower part of the separable gourd-shaped rotating sphere (8) to the upper end of the upper lever arm (10); c is the distance from the lower center of the separable gourd-shaped rotating sphere (8) to the lower end of the lower lever arm (9).
8. The horizontal omnidirectional displacement amplification type friction damper according to claim 4, wherein the lever spherical hinge rotating mechanism composed of the lever and the slidably separable double spherical hinge not only amplifies the displacement response by b/a times and transmits the amplified displacement response to the upper end of the upper lever arm (10), but also amplifies the displacement response by c/a times and transmits the amplified displacement response to the lower end of the lower lever arm (9), thereby increasing the relative displacement between the steel plate and the friction plate and improving the energy consumption capability of the damper; wherein a is the distance from the lower spherical center to the upper spherical center of the separable gourd-shaped rotating sphere (8); b is the distance from the center of the lower part of the separable gourd-shaped rotating sphere (8) to the upper end of the upper lever arm (10); c is the distance from the lower center of the separable gourd-shaped rotating sphere (8) to the lower end of the lower lever arm (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022212942.XU CN214033346U (en) | 2020-10-07 | 2020-10-07 | Horizontal omnidirectional displacement amplification type friction damper |
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| CN202022212942.XU CN214033346U (en) | 2020-10-07 | 2020-10-07 | Horizontal omnidirectional displacement amplification type friction damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176855A (en) * | 2020-10-07 | 2021-01-05 | 大连理工大学 | Horizontal omnidirectional displacement amplification type friction damper based on slidable separation double-spherical hinge |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176855A (en) * | 2020-10-07 | 2021-01-05 | 大连理工大学 | Horizontal omnidirectional displacement amplification type friction damper based on slidable separation double-spherical hinge |
| CN112176855B (en) * | 2020-10-07 | 2024-06-14 | 大连理工大学 | Horizontal omni-directional displacement amplifying type friction damper based on slidable separation double spherical hinges |
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