CN110616937A - Variable-frequency curved-surface ball shock insulation support with viscous damper - Google Patents
Variable-frequency curved-surface ball shock insulation support with viscous damper Download PDFInfo
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- 238000009413 insulation Methods 0.000 title claims abstract description 58
- 230000035939 shock Effects 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 75
- 238000005096 rolling process Methods 0.000 claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000002955 isolation Methods 0.000 claims description 16
- 239000011241 protective layer Substances 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 15
- 238000005265 energy consumption Methods 0.000 abstract description 14
- 238000013016 damping Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000013521 mastic Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
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Abstract
The invention belongs to the technical field of shock insulation, and particularly relates to a frequency conversion curved surface rolling ball shock insulation support with a viscous damper, which has the following structure: the upper supporting plate and the lower supporting plate are oppositely arranged from top to bottom, the corresponding surfaces of the upper supporting plate and the lower supporting plate are respectively provided with a variable frequency concave surface, the variable frequency concave surfaces of the upper supporting plate and the lower supporting plate correspond to each other in an up-down direction to form a group, and a metal rolling ball is arranged between each variable frequency concave surface. Compared with the traditional arc or ellipsoid curved surface rolling ball shock insulation support, the variable-frequency concave curved surface has a better shock insulation effect; the viscous damper increases the energy consumption capability of the rolling ball shock insulation support, solves the problems of small rolling friction force and poor energy consumption of the traditional rolling ball friction pendulum support, and ensures that the rolling ball support has better self-resetting power because the viscous damping force is related to the speed. In addition, the side of the lower support plate is respectively provided with a limit baffle for preventing the upper support plate from being separated, so that the problem that the upper support plate of the traditional rolling ball support is easy to overturn under large displacement is solved.
Description
Technical Field
The invention belongs to the technical field of shock insulation, and particularly relates to a frequency conversion curved surface ball shock insulation support with a viscous damper.
Background
The development of the rolling ball shock insulation support dates back to 19 th century, 1870 for the earliest, and Touaillon invented a rolling ball to be placed in a support plate with spherical concave surfaces at the upper part and the lower part. The shock insulation principle of the support is similar to that of a friction pendulum shock insulation support, the inherent period of the structure is prolonged by utilizing a friction curved surface, the power amplification effect caused by the earthquake action can be greatly reduced, the earthquake energy is consumed by the friction force generated by the rolling ball and the upper and lower concave curved surfaces in the rolling process, the rolling friction coefficient is small, the energy consumption capacity of the rolling ball pendulum support is limited, and the rolling ball rolls out from the bottom plate due to the fact that the support is prone to overturning. Thus, improved ball-isolated mounts have been proposed in succession by some scholars.
In 1995, Kemeny et al invented a Ball-In-Cone isolation bearing, which has a limited energy dissipation capability although the damping of the bearing is increased. In 2010, Tsai CS et al propose take damping material's spin shock insulation support, but the device can harm damping material under the repeated action of earthquake, influences the shock insulation effect, and big displacement undersetting can easily take place the overturning problem simultaneously. In 2012, Suiyinger et al proposed a ball disc spring vibration isolation device, which utilizes mastic asphalt (SMA) wires to increase energy consumption capacity, but SMA cost is higher, and tension breaking can occur under large displacement. In 2014, the glutinous and elastic damping rolling ball shock insulation support is provided by Suiyinger and the like, the support solves the problems of energy consumption and overturning resistance, but has a complex structure, and the problem of blockage and pause easily occurs to a slide way and a slide plate under the action of an earthquake to influence the shock insulation effect.
The rolling ball vibration isolation support which is developed at present has the defects of insufficient energy consumption capability, easy overturning, complex structure, high cost and the like. Meanwhile, the concave curved surface of the traditional rolling ball shock insulation support mostly adopts an arc curved surface, the influence of different curved surface shapes on the shock insulation effect of the rolling ball shock insulation support is not analyzed systematically, and the optimal curved surface suitable for the rolling ball shock insulation support is not provided.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a frequency conversion curved surface rolling ball shock insulation support with a viscous damper, and aims to overcome the defects of poor shock insulation effect, weak energy consumption capability, easiness in overturning, complex structure and the like of the traditional rolling ball shock insulation support.
The technical scheme of the invention is as follows:
the utility model provides a take viscous type attenuator frequency conversion curved surface spin isolation bearing, includes: upper bracket board, upper bracket board viscous type attenuator, bottom suspension bedplate viscous type attenuator, metal spin, flute profile metal flat board, concrete structure as follows:
the upper support plate and the lower support plate are oppositely arranged up and down, the corresponding surfaces of the upper support plate and the lower support plate are respectively provided with a variable frequency concave curved surface, every two variable frequency concave curved surfaces of the upper support plate and the lower support plate correspond to each other in the up-down direction to form a group, and a metal rolling ball is arranged between each group of variable frequency concave curved surfaces;
an upper support plate viscous damper is arranged at the top of the upper support plate, a lower support plate viscous damper is arranged between the upper support plate and the lower support plate, one end of the upper support plate viscous damper is fixed on the upper support plate, one end of the lower support plate viscous damper is fixed on the lower support plate, the other end of the upper support plate viscous damper and the other end of the lower support plate viscous damper are in pairwise correspondence along the vertical direction to form a group, and the other end of each group of upper support plate viscous dampers is connected with the other end of the lower support plate viscous dampers;
the top of the upper support plate is covered and buckled with a groove-shaped metal flat plate, and an upper cavity is formed between the groove-shaped part of the groove-shaped metal flat plate and the upper support plate.
The frequency conversion curved surface rolling ball shock insulation support with the viscous dampers is characterized in that the viscous dampers of the upper support plate are symmetrically arranged between the upper support plate and the groove-shaped metal flat plate, one end of each viscous damper of the upper support plate is oppositely arranged on the upper support plate through a first fixing bolt and a first elastic gasket which are matched with each other, and the other end of each viscous damper of the upper support plate penetrates through a second groove on the side surface of the groove-shaped metal flat plate and extends to the outer side of the groove-shaped metal flat plate;
the lower support plate viscous dampers are symmetrically arranged between the upper support plate and the lower support plate, one end of each lower support plate viscous damper is oppositely arranged on the lower support plate through a second fixing bolt and a second elastic gasket which are matched for use, and the other end of each lower support plate viscous damper extends to the outer side of the lower support plate.
Take viscous type attenuator frequency conversion curved surface spin isolation bearing, two liang of correspondences of upper bracket board viscous type attenuator's the other end and the other end of undersetting board viscous type attenuator are a set of along upper and lower direction, link to each other through the connecting bolt pole between every group upper bracket board viscous type attenuator and the undersetting board viscous type attenuator, form upper bracket board viscous type attenuator and undersetting board viscous type attenuator integrated configuration.
Take viscous type attenuator frequency conversion curved surface spin shock insulation support, the bottom suspension bedplate is the last spill structure of bottom surface and side formation, the side of bottom suspension bedplate is the limit baffle who prevents that the top suspension bedplate from breaking away from respectively, limit baffle is located the outside of upper bracket viscous type attenuator and bottom suspension bedplate viscous type attenuator integrated configuration, the rubber inoxidizing coating is pasted to limit baffle inboard.
The frequency conversion curved surface rolling ball shock insulation support with the viscous damper is characterized in that the bottom surface of the lower support plate is connected with a foundation or other fixed objects through uniformly distributed third fixing bolts.
Take viscous type attenuator frequency conversion curved surface spin shock insulation support, the side middle part in the upper bracket board outside sets up the recess one of preventing upper bracket board viscous type attenuator collision respectively, every recess one is located between every group upper bracket board viscous type attenuator and the lower bearing board viscous type attenuator.
The frequency conversion curved surface rolling ball shock insulation support with the viscous damper is characterized in that a rubber protective layer is adhered to the side surface of the outer side of the upper support plate except the side surface of the upper support plate where the first groove is located.
The frequency conversion curved surface rolling ball shock insulation support with the viscous damper is characterized in that four corners of a fixed groove-shaped metal flat plate are respectively provided with a bolt hole, and a fourth fixing bolt penetrates through the bolt holes to be connected with an upper support plate.
The frequency conversion curved surface rolling ball shock insulation support with the viscous damper is characterized in that the section of a groove-shaped metal flat plate is of a concave structure, grooves are respectively arranged in the middle of the side vertical surfaces of the groove-shaped metal flat plate, and grooves are arranged in the middle of the front vertical surface of the groove-shaped metal flat plate.
The working principle adopted by the invention to solve the technical problems is as follows:
the invention is installed between the foundation (or other fixed objects) and the shock insulation object, the lower support plate is fixedly connected with the foundation (or other fixed objects), and the metal flat plate connected with the upper support plate is fixedly connected with the shock insulation object. The upper and lower support plates are respectively provided with four variable-frequency concave curved surfaces coated with polytetrafluoroethylene materials, when an earthquake comes, the shock insulation support moves on the variable-frequency concave curved surfaces through rolling balls, so that earthquake energy is converted into potential energy and heat energy generated by friction, and the rolling balls play a role in isolating the earthquake. It is known that seismic forces are not uni-directional, so four rolling balls evenly distributed on the seat plate isolate seismic forces from two horizontal directions. The curved surfaces of the upper and lower support plates adopt variable frequency curved surfaces, and MATLAB software is utilized to compare an arc-shaped curved surface, two different ellipsoidal curved surfaces and a conical curved surface, so that the variable frequency curved surfaces have larger periodic variation and better shock insulation effect under the same condition, as shown in figures 9-13.
After an earthquake occurs, the rolling friction force is small, so that the energy consumption capability is weak, the rolling balls can be automatically reset in a long time, and the energy consumption capability of the rolling ball pendulum is very limited when only the rolling friction is considered according to the above mentioned ideal hysteresis curve (as shown in fig. 14) of the rolling ball shock insulation support in any curved surface form, so that the energy consumption capability of the shock insulation support is increased by arranging viscous dampers in the horizontal direction on the upper support and the lower support plate respectively. Because the viscous damper is related to the speed, when the speed is reduced under the control of the damping force, the damping force is also small, and the rolling ball is easy to reset, thereby achieving a better shock insulation effect. In order to prevent the problem that the upper support plate is separated from overturning under the large displacement, a metal limit baffle is arranged on the periphery of the lower support plate, and meanwhile, four grooves are processed at the proper positions of the upper support plate in order to prevent the damping rod from colliding with the limit baffle.
The invention has the advantages and beneficial effects that:
1. the invention is a metal product, and the surface of the metal product is subjected to strict corrosion and rust prevention treatment, so that the metal product has good durability; the invention has simple structure, clear mechanical path, reliable performance, strong mobility and convenient installation; when an earthquake occurs, the earthquake action of low-rise buildings, ancient cultural relics of museums and important equipment which are arranged at the upper part of the shock insulation support can be isolated, and the earthquake response of the buildings, the ancient cultural relics or the showcases and the important equipment which are arranged at the upper part of the shock insulation support is reduced; the invention adopts rolling and low-friction sliding curved surface for shock insulation, and the weight placed on the upper part of the support has no influence on the shock insulation effect.
2. The upper and lower support plates of the invention are respectively provided with a frequency conversion concave curved surface coated with Polytetrafluoroethylene (PTFE) material and are additionally provided with viscous dampers. Compared with the traditional arc or ellipsoid curved surface rolling ball shock insulation support, the variable frequency curved surface has a better shock insulation effect; the viscous damper increases the energy consumption capability of the rolling ball shock insulation support, solves the problems of small rolling friction force and poor energy consumption of the traditional rolling ball friction pendulum support, and ensures that the rolling ball support has a better self-resetting function because the viscous damping force is related to the speed.
3. The shock insulation support has the advantages of good shock insulation effect, simple structure, strong mobility and convenient installation, and can be used for shock insulation protection of ancient cultural relics and important equipment of low-rise buildings and museums.
Drawings
FIG. 1 is a schematic top view of a frequency conversion curved surface ball-isolated bearing with a viscous damper in the embodiment of the invention.
Fig. 2 is a schematic sectional view of fig. 1 through 1.
FIG. 3 is a schematic top view of a rolling ball seismic isolation bearing with a grooved metal plate removed according to an embodiment of the present invention.
Fig. 4 is a front view of an upper bracket plate with a viscous type damper according to an embodiment of the present invention.
Fig. 5 is a back view of an upper bracket plate with a viscous type damper according to an embodiment of the present invention.
Fig. 6 is a back view of a lower seat plate with a viscous-type damper and a limit stop in an embodiment of the present invention.
Fig. 7(a) is a front view schematically showing the structure of a channel-shaped metal plate for supporting a seismic isolator according to an embodiment of the present invention.
FIG. 7(b) is a sectional view taken along line 2-2 in FIG. 7 (a).
Fig. 8(a) is a schematic rear view of a channel-shaped metal plate for supporting a seismic isolator according to an embodiment of the present invention.
Fig. 8(b) is a front elevational view of fig. 8 (a).
Fig. 8(c) is a right elevational view of fig. 8 (a).
Fig. 9-13 are analysis diagrams for demonstrating better vibration isolation effect of the variable frequency curved surface in the embodiment of the invention. FIG. 9 is a graph comparing the geometry of five curves, with x representing the argument (mm) of the curve function and y representing the function value (mm) of the curve function; FIG. 10 is a graph comparing the geometric slopes of five curves, the abscissa x representing the argument (mm) of the curve function and the ordinate y' representing the value of the function slope (mm) of the curve function; FIG. 11 is a graph comparing the stiffness ratio versus mass versus displacement curves for five curves, with x representing displacement (mm) on the abscissa and K/(M + M) on the ordinate1) Representing the stiffness to mass ratio as a function of displacement; FIG. 12 is a graph comparing time of movement versus displacement for five curves, with x representing displacement (mm) on the abscissa and y representing time of movement (T) as a function of displacement on the ordinate; FIG. 13 is a graph comparing stiffness versus displacement for five curves, with x representing displacement (mm) on the abscissa and F'/(M + M) on the ordinate1) Representing the stiffness values as a function of displacement.
FIG. 14 shows the hysteresis curve of different rolling ball vibration-isolating bearings with different curved surface forms and limited energy consumption capacity under the condition of no additional damping in the embodiment of the invention. In the figure, the abscissa x represents the displacement (mm) of the five curves and the ordinate F/(M + M)1) Representing the stiffness of the five curves.
In the figure, 1 an upper support plate, 2 a lower support plate, 3 a variable frequency concave curved surface, 4 metal rolling balls, 5 an upper support plate viscous damper, 6 a lower support plate viscous damper, 7 a fixing bolt I, 8 a first elastic gasket, 9 a fixing bolt II, 10 a second elastic gasket, 11 a connecting bolt rod, 12 a limiting baffle, 13 a groove I, 14 a rubber protective layer, 15 a fixing bolt III, 16 a groove-shaped metal flat plate, 17 a fixing bolt IV, 18 a bolt hole, 19 a section of the groove-shaped metal flat plate, 20 a front vertical surface of the groove-shaped metal flat plate, 21 a side vertical surface of the groove-shaped metal flat plate and 22 a groove II.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1-8, the frequency conversion curved surface rolling ball shock insulation support with the viscous damper mainly comprises: an upper support plate 1, a lower support plate 2, a frequency conversion concave curved surface 3, a stainless steel metal rolling ball 4, an upper support plate viscous damper 5, a lower support plate viscous damper 6, a first fixing bolt 7 and an elastic gasket 8 at the inner end of the upper support plate viscous damper 5, a second fixing bolt 9 and an elastic gasket 10 of the lower support plate 2 and the lower support plate viscous damper 6, a connecting bolt rod 11 with screw threads at the outer ends of the upper support plate viscous damper 5 and the lower support plate viscous damper 6, a limit baffle 12 for preventing the upper support plate from separating, a first groove 13 for preventing the upper support plate viscous damper 5 from colliding, a rubber protective layer 14 at the outer side of the upper support plate 1 and the inner side of the limit baffle 12 of the lower support plate 2, a third fixing bolt 15 for connecting the lower support plate 2 with a foundation (or other fixed objects), a groove-shaped metal flat plate 16 for supporting shock insulation, a groove-shaped metal flat plate 16 and a fourth fixing bolt 17 of the upper support plate 1, bolt holes 18 for fixing the slotted metal flat plate 16 and the upper support plate 1, a section 19 of the slotted metal flat plate, a front vertical face 20 of the slotted metal flat plate, a side vertical face 21 of the slotted metal flat plate and a second groove 22 for preventing the slotted metal flat plate 16 from colliding to the viscous damper 5 of the upper support plate. The concrete structure is as follows:
upper bracket board 1, lower bolster board 2 are according to relative setting from top to bottom, are equipped with frequency conversion concave surface 3 on the corresponding face of upper bracket board 1, lower bolster board 2 respectively, and two liang of correspondences in upper and lower direction are a set of for upper bracket board 1 and lower bolster board 2's frequency conversion concave surface 3, set up stainless steel metal spin 4 between every frequency conversion concave surface of group 3. The top of upper bracket board 1 sets up upper bracket board viscous type attenuator 5, upper bracket board 1, set up undersetting board viscous type attenuator 6 between the undersetting board 2, the one end of upper bracket board viscous type attenuator 5 is fixed in upper bracket board 1, the one end of undersetting board viscous type attenuator 6 is fixed in undersetting board 2, the other end of upper bracket board viscous type attenuator 5 and the other end of undersetting board viscous type attenuator 6 are two liang of correspondences from top to bottom along being a set of, link to each other between the other end of every group upper bracket board viscous type attenuator 5 and the other end of undersetting board viscous type attenuator 6.
The top of the upper support plate 1 is covered and buckled with a groove-shaped metal flat plate 16, and an upper cavity is formed between the groove-shaped part of the groove-shaped metal flat plate 16 and the upper support plate 1. Four upper bracket plate viscous dampers 5 are symmetrically arranged between the upper bracket plate 1 and the groove-shaped metal flat plate 16, one end of each upper bracket plate viscous damper 5 is oppositely arranged at the center of the upper bracket plate 1 through a first fixing bolt 7 and a first elastic gasket 8 which are matched with each other, and the other end of each upper bracket plate viscous damper 5 penetrates through a second groove 22 on the side surface of the groove-shaped metal flat plate 16 and extends to the outer side of the groove-shaped metal flat plate 16. Four lower support plate viscous dampers 6 are symmetrically arranged between the upper support plate 1 and the lower support plate 2, one end of each lower support plate viscous damper 6 is relatively arranged at the center of the lower support plate 2 through a second fixing bolt 9 and a second elastic gasket 10 which are matched for use, and the other end of each lower support plate viscous damper 6 extends to the outer side of the lower support plate 2. The other end of upper bracket plate viscous damper 5 and the other end of undersetting board viscous damper 6 are two liang of corresponding as a set of along upper and lower direction, link to each other through connecting bolt pole 11 between every group upper bracket plate viscous damper 5 and the undersetting board viscous damper 6, form upper bracket plate viscous damper 5 and the 6 integrated configuration of undersetting board viscous damper.
Four side middle parts in the upper bracket board 1 outside set up respectively and prevent the recess 13 of upper bracket board viscous type attenuator 5 collision, and every recess 13 is located between every group upper bracket board viscous type attenuator 5 and lower bearing plate viscous type attenuator 6. Rubber protective layers 14 are adhered to four sides of the outer side of the upper support plate 1 except the side of the upper support plate 1 where the first groove 13 is located.
Four corners of the fixing groove-shaped metal flat plate 16 are respectively provided with bolt holes 18, and four fixing bolts 17 respectively penetrate through the bolt holes 18 to be connected with the upper support plate 1. The section 19 of the groove-shaped metal flat plate is of a concave structure, a second groove 22 is respectively arranged in the middle of the side vertical face 21 of the groove-shaped metal flat plate, and a second groove 22 is arranged in the middle of the front vertical face 20 of the groove-shaped metal flat plate.
The lower support plate 2 is an upper concave structure formed by the bottom surface and four side surfaces, the four side surfaces of the lower support plate 2 are respectively provided with a limit baffle 12 for preventing the upper support plate from being separated, the limit baffle 12 is positioned at the outer side of the combined structure of the upper support plate viscous damper 5 and the lower support plate viscous damper 6, a rubber protective layer 14 is adhered at the inner side of the limit baffle 12, and the bottom surface of the lower support plate 2 is connected with a foundation (or other fixed objects) through three fixing bolts 15 which are uniformly distributed.
In the invention, the meaning of the frequency conversion concave curved surface is as follows: the frequency conversion surface function is converted from an elliptic function, and the function formula is as follows:where the constant b is the minor axis length (mm) of the ellipse and d is a constant relating the major axis of the ellipse to the displacement of the support, see literature: pranesh Murnal and Ravisinus, Behavior of Torque Coupled Structures with Variable frequency Pendulum Isolator [ J].JOURNAL OF STRUCTURAL ENGINEERING,2004,130:1041-1054.
As shown in fig. 1, in the embodiment of the invention, a schematic plan view of a frequency conversion curved surface ball-isolated bearing with a viscous damper is shown. The vibration isolation device comprises a groove-shaped metal flat plate 16 for supporting vibration isolation objects, a lower support plate 2, an upper support plate viscous damper 5, a threaded connecting bolt rod 11, a limiting baffle 12 for preventing the upper support plate from being separated, a rubber protective layer 14 arranged on the outer side of the upper support plate 1 and the inner side of the limiting baffle 12 of the lower support plate 2, a fixing bolt III 15 for connecting the lower support plate 2 with a foundation (or other fixed objects), and a fixing bolt IV 17 for connecting the groove-shaped metal flat plate 16 with the upper support plate 1.
As shown in FIG. 2, a schematic sectional view 1-1 of a top view of a ball-isolated bearing in an embodiment of the invention is shown. The vibration isolation device is composed of an upper support plate 1, a lower support plate 2, an upper support plate, a lower support plate frequency conversion concave curved surface 3, a stainless steel metal rolling ball 4, an upper support plate viscous type damper 5, a lower support plate viscous type damper 6, a first fixing bolt 7 and a first elastic gasket 8 at the inner end of the upper support plate viscous type damper 5, a second fixing bolt 9 and a second elastic gasket 10 of the lower support plate viscous type damper 2 and the lower support plate viscous type damper 6, a connecting bolt rod 11 with threads at the outer ends of the upper support plate viscous type damper 5 and the lower support plate viscous type damper 6, a limiting baffle 12 for preventing the upper support plate from being separated, rubber protective layers 14 at the outer side of the upper support plate 1 and the inner side of the limiting baffle 12 of the lower support plate 2, a third fixing bolt 15 for connecting the lower support plate 2 with a foundation (or other fixtures), and a groove-shaped metal flat plate 16 for supporting vibration isolation.
During installation, the lower support plate 2 is fixed on a foundation or other fixed objects through the third fixing bolt 15, the lower support plate viscous damper 6 is fixed on the lower support plate 2 through the second elastic gasket 10 and the second fixing bolt 9, the four stainless steel metal rolling balls 4 are placed on the lower support plate 2, the upper support plate 1 is placed on the stainless steel metal rolling balls 4, the upper support plate viscous damper 5 is fixed on the upper support plate 1 through the first elastic gasket 8 and the first fixing bolt 7, and the groove-shaped metal flat plate 16 is fixed on the upper support plate 1 through the fourth fixing bolt 17.
As shown in FIG. 3, the rolling ball-isolated bearing in the embodiment of the invention is a schematic plan view of the rolling ball-isolated bearing with the groove-shaped metal flat plate removed. The damping device is composed of an upper support plate 1, a lower support plate 2, an upper support plate viscous damper 5, a connecting bolt rod 11, a limiting baffle 12 for preventing the upper support plate from being separated, a rubber protective layer 14 arranged on the outer side of the upper support plate 1 and on the inner side of the limiting baffle 12 of the lower support plate 2, a fixing bolt III 15 for connecting the lower support plate 2 with a foundation (or other fixed objects), and a groove-shaped metal flat plate 16 and a fixing bolt IV 17 of the upper support plate 1.
As shown in fig. 4, the upper bracket plate with the viscous damper in the embodiment of the present invention is schematically illustrated in a front view. The damping device comprises an upper support plate 1, an upper support plate viscous damper 5, a first fixing bolt 7, a connecting bolt rod 11, a first groove 13 for preventing the upper support plate viscous damper 5 from colliding, and a rubber protective layer 14 on the outer side of the upper support plate 1.
As shown in fig. 5, the back of the upper bracket plate with the viscous damper in the embodiment of the present invention is schematically illustrated. The embodiment comprises an upper support plate 1, a frequency conversion concave curved surface 3, an upper support plate viscous damper 5, a connecting bolt rod 11, a first groove 13 for preventing the upper support plate viscous damper 5 from colliding, and a rubber protective layer 14 on the outer side of the upper support plate 1.
As shown in fig. 6, the back of the lower seat plate with the viscous damper and the limit stop in the embodiment of the present invention is schematically illustrated. The damping device is composed of a lower support plate 2, a frequency conversion concave curved surface 3, a lower support plate viscous damper 6, a second fixing bolt 9, a limit baffle 12 for preventing an upper support plate from being separated, a rubber protective layer 14 on the inner side of the limit baffle 12 of the lower support plate 2, and a third fixing bolt 15 for connecting the lower support plate 2 with a foundation (or other fixed objects).
As shown in fig. 7(a) -7 (b), a front view and a 2-2 sectional view of a channel-shaped metal plate supporting a seismic isolator according to an embodiment of the present invention are shown. The present embodiment is composed of a channel-shaped metal plate 16 for supporting the seismic isolation, a fixing bolt 17 for the channel-shaped metal plate 16 and the upper support plate, and a section 19 of the channel-shaped metal plate.
As shown in fig. 8(a) -8 (c), the rear view, the front elevation view and the right elevation view of the trough-shaped metal plate for supporting the seismic isolation in the embodiment of the present invention are composed of the trough-shaped metal plate 16 for supporting the seismic isolation, the bolt holes 18 for fixing the trough-shaped metal plate 16 and the upper support plate, the front elevation 20 of the trough-shaped metal plate, the side elevation 21 of the trough-shaped metal plate, and the second groove 22 for preventing the trough-shaped metal plate 16 from colliding with the viscous damper 5 of the upper support plate.
The result shows that the invention takes the traditional rolling ball shock insulation support as the basis, and the frequency conversion concave curved surfaces coated with materials with smaller friction coefficient (such as polytetrafluoroethylene and the like) are respectively processed on the upper support plate and the lower support plate, thereby achieving better shock insulation effect; meanwhile, the viscous damper is added on the support, so that the problems of insufficient energy consumption capability, difficulty in resetting and the like caused by small friction force of the rolling ball can be effectively solved; arrange outside limit baffle on the bottom suspension bedplate, can solve traditional ball support's upper bracket board problem of toppling easily.
Claims (9)
1. The utility model provides a take viscous type attenuator frequency conversion curved surface spin isolation bearing which characterized in that includes: upper bracket board, upper bracket board viscous type attenuator, bottom suspension bedplate viscous type attenuator, metal spin, flute profile metal flat board, concrete structure as follows:
the upper support plate and the lower support plate are oppositely arranged up and down, the corresponding surfaces of the upper support plate and the lower support plate are respectively provided with a variable frequency concave curved surface, every two variable frequency concave curved surfaces of the upper support plate and the lower support plate correspond to each other in the up-down direction to form a group, and a metal rolling ball is arranged between each group of variable frequency concave curved surfaces;
an upper support plate viscous damper is arranged at the top of the upper support plate, a lower support plate viscous damper is arranged between the upper support plate and the lower support plate, one end of the upper support plate viscous damper is fixed on the upper support plate, one end of the lower support plate viscous damper is fixed on the lower support plate, the other end of the upper support plate viscous damper and the other end of the lower support plate viscous damper are in pairwise correspondence along the vertical direction to form a group, and the other end of each group of upper support plate viscous dampers is connected with the other end of the lower support plate viscous dampers;
the top of the upper support plate is covered and buckled with a groove-shaped metal flat plate, and an upper cavity is formed between the groove-shaped part of the groove-shaped metal flat plate and the upper support plate.
2. The variable-frequency curved-surface rolling ball shock-insulation support with the viscous dampers as claimed in claim 1, wherein the viscous dampers of the upper support plate are symmetrically arranged between the upper support plate and the groove-shaped metal flat plate, one end of the viscous damper of the upper support plate is oppositely arranged on the upper support plate through a first fixing bolt and a first elastic gasket which are matched with each other, and the other end of each viscous damper of the upper support plate penetrates through a second groove in the side surface of the groove-shaped metal flat plate and extends to the outer side of the groove-shaped metal flat plate;
the lower support plate viscous dampers are symmetrically arranged between the upper support plate and the lower support plate, one end of each lower support plate viscous damper is oppositely arranged on the lower support plate through a second fixing bolt and a second elastic gasket which are matched for use, and the other end of each lower support plate viscous damper extends to the outer side of the lower support plate.
3. The frequency conversion curved surface rolling ball shock insulation support with the viscous damper as claimed in claim 2, wherein the other end of the upper support plate viscous damper and the other end of the lower support plate viscous damper are in pairwise correspondence to form a group along the up-down direction, and each group of upper support plate viscous dampers and lower support plate viscous dampers are connected through connecting bolt rods to form an upper support plate viscous damper and lower support plate viscous damper combined structure.
4. The variable-frequency curved-surface rolling-ball shock-insulation support with the viscous damper as claimed in claim 1, wherein the lower support plate is of an upper concave structure formed by the bottom surface and the side surfaces, the side surfaces of the lower support plate are respectively provided with a limiting baffle for preventing the upper support plate from being separated, the limiting baffle is positioned outside the combined structure of the viscous damper of the upper support plate and the viscous damper of the lower support plate, and a rubber protective layer is adhered to the inner side of the limiting baffle.
5. The frequency conversion curved surface rolling ball shock insulation support with the viscous damper as claimed in claim 4, wherein the bottom surface of the lower support plate is connected with a foundation or other fixed objects through evenly distributed third fixing bolts.
6. The frequency conversion curved surface rolling ball shock insulation support with the viscous dampers as claimed in claim 1, wherein the middle part of the lateral surface of the outer side of the upper support plate is respectively provided with a first groove for preventing the viscous dampers of the upper support plate from colliding, and each first groove is positioned between each group of the viscous dampers of the upper support plate and the viscous dampers of the lower support plate.
7. The frequency conversion curved surface rolling ball seismic isolation bearing with the viscous damper as claimed in claim 6, wherein a rubber protective layer is adhered to the side surface of the outer side of the upper support plate except the side surface of the upper support plate where the first groove is positioned.
8. The frequency conversion curved surface rolling ball shock insulation support with the viscous damper as claimed in claim 1, wherein four corners of the fixed groove-shaped metal flat plate are respectively provided with bolt holes, and four fixing bolts respectively penetrate through the bolt holes to be connected with the upper support plate.
9. The frequency conversion curved surface rolling ball shock insulation support with the viscous damper as claimed in claim 1, wherein the section of the groove-shaped metal flat plate is of a concave structure, grooves are respectively arranged in the middle of the side vertical surfaces of the groove-shaped metal flat plate, and grooves are arranged in the middle of the front vertical surface of the groove-shaped metal flat plate.
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| CN201910846418.7A CN110616937B (en) | 2019-09-09 | 2019-09-09 | Variable-frequency curved-surface ball shock insulation support with viscous damper |
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| CN201910846418.7A CN110616937B (en) | 2019-09-09 | 2019-09-09 | Variable-frequency curved-surface ball shock insulation support with viscous damper |
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| CN110616937B (en) | 2021-03-02 |
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