CN112160235A - Eddy current damping steel support for bridge - Google Patents
Eddy current damping steel support for bridge Download PDFInfo
- Publication number
- CN112160235A CN112160235A CN202011034823.8A CN202011034823A CN112160235A CN 112160235 A CN112160235 A CN 112160235A CN 202011034823 A CN202011034823 A CN 202011034823A CN 112160235 A CN112160235 A CN 112160235A
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- eddy current
- steel
- plate
- damping
- current damper
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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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- 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
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
Abstract
The invention discloses an eddy current damping steel support for a bridge, which comprises a lower support plate, an upper support plate, a damping base and a spherical crown, and further comprises a guide device arranged between the damping base and the lower support plate, and an eddy current damper arranged between the damping base and the lower support plate, wherein the eddy current damper comprises a cylinder body, a lead screw and a rotating structure, the cylinder body is arranged on the damping base, the cylinder body can drive the lead screw to rotate along with the sliding of the damping base, and the lead screw drives a magnet in the rotating mechanism and a conductor plate to rotate relatively to cut magnetic lines of force. According to the eddy current damping steel support for the bridge, the seismic isolation and reduction design is simplified in such a way, and meanwhile, due to the adoption of the eddy current damper, the service life and the reliability of a product are greatly improved, and the reliability of the seismic isolation and reduction design is enhanced.
Description
Technical Field
The invention relates to a bridge support, in particular to an eddy current damping steel support for a bridge.
Background
The existing bridge damping support is used for providing horizontal and vertical damping for a bridge. For example, in chinese utility model (application No. 201710142245.1), a vibration damping support for a bridge is disclosed, which comprises a spherical support main body, the spherical support main body comprises an upper support plate for connecting an upper engineering structure of the bridge and a lower support plate for connecting a lower engineering structure of the bridge, a middle spherical surface plate is arranged between the upper support plate and the lower support plate, the middle spherical surface plate is connected with the lower support plate through an intermediate, the upper surface of the intermediate is matched with the lower surface of the middle spherical surface plate, and an energy-consuming friction pair is arranged between the lower surface of the intermediate and the upper surface of the lower support plate.
Also for example, in the chinese invention patent (publication No. CN 106758784B), a large-span bridge vibration damping device is disclosed, wherein an elastic support member is used to provide horizontal and vertical damping, the elastic support member comprises an elastic collet and a sliding support column slidably mounted in the elastic collet, the outer peripheral surface of the bottom of the sliding support column is a conical surface, the bottom port of the elastic collet is an elastic movable clamping opening, the bottom of the sliding support column is slidably fitted with the elastic movable clamping opening, when the beam is displaced, the beam drives the support top plate to be displaced, because the middle support and the support top plate are spherically fitted, axial separation and horizontal component force are generated, the horizontal component force applies pressure to the elastic collet, the elastic collet produces horizontal damping, which plays a role in horizontal vibration damping of the bridge, and at the same time, the elastic movable clamping opening extrudes the conical surface of the sliding support column to make the sliding support column move upwards, the sliding support column tightly supports the support top plate to generate vertical damping, and the vertical damping effect of the bridge is achieved.
The existing seismic mitigation and isolation support also faces a plurality of problems: at present, because the environment protection is increasingly emphasized by the nation and the society, the lead core rubber support and the high-damping rubber support are less adopted on bridges, and a steel support and a rubber support are also introduced to be used together in the building field; in terms of performance, the performances of the lead rubber support and the high-damping rubber support are more dependent on the rubber formula, vulcanization conditions and other production processes and process quality control. The performance varies greatly between individuals. In addition, most of the existing shock insulation supports are rubber and steel plate glued structures, and the service life of the shock insulation supports under the conditions of wind, sunshine and the like is generally shorter than that of steel supports, so that the shock insulation supports become a concern of the whole shock insulation system.
The viscous damping support is one of products with better energy consumption effect at present, but the support uses liquid silicon oil and a sealing device, once the silicon oil leaks or a sealing element is aged, the product loses the energy consumption capability, thereby losing the shock absorption and isolation capability, and the viscous damping support is a great hidden danger to the structure.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the eddy current damping steel support for the bridge, which has good fatigue resistance and reliability.
In order to achieve the above purpose, the invention provides the following technical scheme:
an eddy current damping steel support for a bridge comprises a lower support plate, an upper support plate, a vibration damping base positioned on the lower support plate and a spherical crown positioned between the vibration damping base and the upper support plate, wherein the vibration damping base is provided with a circular groove for accommodating the convex parts of the spherical crown and the upper support plate, the plane at the bottom of the spherical crown is matched with the surface in the groove, the spherical surface at the top of the spherical crown is matched with the bottom surface of the upper support plate, sliding or rotating friction pairs are arranged between the vibration damping base and the lower support plate, between the vibration damping base and the spherical crown and between the spherical crown and the upper support plate, the support also comprises,
the setting is in vibration damping mount with guider between the bottom suspension bedplate makes vibration damping mount can follow guider slides, and guider can transmit the horizontal force of non-slip direction, and install vibration damping mount with eddy current damper subassembly between the bottom suspension bedplate, eddy current damper subassembly is including fixing the first stiff end on vibration damping mount, the second stiff end of fixing on the bottom suspension bedplate, the lead screw, install revolution mechanic and eddy current damper on the lead screw, wherein, when first stiff end moves relative to the second stiff end, can drive the lead screw with revolution mechanic relatively rotates, and drives the inside magnet of eddy current damper is rotatory relative to the conductor board, does the motion of cutting magnetic line of force.
The preferred technical scheme of the invention is as follows:
preferably, the magnet in the eddy current damper is magnetic steel, the magnetic steel is fixed on a magnetic steel frame, and a magnetic field between the magnetic steel frame and the conductor plate is perpendicular to the motion direction of the cylinder body.
Preferably, the rotating mechanism comprises a ball screw nut disposed on the screw, movement of the ball screw nut on the screw can drive the screw to rotate, and rotation of the screw can drive the internal magnet of the eddy current damper to rotate relative to the conductor plate.
Preferably, a pair of wing plates extending outwards are respectively arranged on two sides of the upper support plate along the sliding direction, through holes for passing through the second fixing ends are formed on the wing plates, the eddy current damper assembly is installed between the pair of wing plates, and the second fixing ends at two ends of the eddy current damper assembly extend out of the through holes.
Preferably, the friction pair consists of a stainless steel plate and wear-resisting plates, and the wear-resisting plates are respectively embedded in the shock absorption base, the spherical crown and the upper support plate.
Preferably, the wear plate is modified ultra-high molecular weight polyethylene.
Preferably, the friction pair comprises a spherical chromium-plated or stainless steel plate coated on the spherical cap.
Preferably, the material of the spherical cap is aluminum alloy.
Preferably, the guide device comprises a guide rail arranged at the bottom of the shock absorption base and a sliding groove arranged on the lower support plate and matched with the guide rail.
Preferably, the first fixing end comprises a nut fixing block fixed on the ball screw nut, the second fixing end comprises end portions located at two ends of the eddy current damper assembly, and the nut fixing block can drive the ball screw nut to move on the screw so as to drive the screw to rotate; the eddy current damper comprises a steel-aluminum composite cylinder and a magnetic steel frame arranged in the steel-aluminum composite cylinder, and the magnet is arranged on the magnetic steel frame on which the conductor plate is fixed on the inner wall of the steel-aluminum composite cylinder; the second fixed end is fixedly connected with the steel-aluminum composite cylinder, and the lead screw is fixedly connected with the magnetic steel frame.
Preferably, the first fixed end and the second fixed end are ends located at two ends of the eddy current damper assembly, respectively; a nut fixing block is fixed on the ball screw nut, the ball screw nut can be driven by the nut fixing block to move on the screw so as to drive the screw to rotate, and one of the first fixing end or the second fixing end is fixedly connected with the nut fixing block; the eddy current damper comprises a steel-aluminum composite cylinder and a magnetic steel frame arranged in the steel-aluminum composite cylinder, and the magnet is arranged on the magnetic steel frame on which the conductor plate is fixed on the inner wall of the steel-aluminum composite cylinder; the lead screw is fixedly connected with the magnetic steel frame, the second fixed end is fixedly connected with the eddy current damper at one end, and the first fixed end is fixedly connected with the eddy current damper at the other end.
Compared with the prior art, the invention has the beneficial effects that:
the invention can play the role of a common support under normal working conditions, and can not apply additional force to the structure; under the earthquake working condition, the invention can play the roles of dissipating earthquake energy and reducing the earthquake response of the structure through the electric eddy current damper, and the dissipation process follows the rule F =2
(F is the horizontal reaction force of the support, v is the relative velocity between the upper and lower structures, vcrIs the critical velocity. FmaxThe maximum damping force of the eddy current damper), the counter force and the relative speed of the upper and lower structures are in a linear relation at low-speed horizontal load. The invention consumes energy through electromagnetic induction, has no working fluid and power supply, and improves the reliability of the seismic isolation design. The service life of the eddy current damper can reach 50 years, and the service life of the product is greatly prolonged. The temperature of the invention is in the range of-40 ℃ to 80 ℃, and the invention has wider application environment than viscous fluid damping support. The friction counter force of the invention at low speed is far lower than that of the viscous fluid damping support, and the structure is more friendly.
Drawings
Fig. 1 is a sectional view of an eddy current damping steel support for a bridge according to an embodiment of the present invention.
Fig. 2 is a top view of the mount of the embodiment shown in fig. 1.
Figure 3 is a top view of the damper base in the embodiment of figure 1.
Figure 4 is a cross-sectional view of an eddy current damper assembly according to the embodiment shown in figure 1.
Figure 5 is a cross-sectional view of the eddy current damper shown in figure 1.
Figure 6 is a schematic view of an eddy current damper assembly in another embodiment of the present invention.
Fig. 7 is a cross-sectional view of the embodiment shown in fig. 6.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
According to the embodiment of the invention, the eddy current damper is arranged on the spherical steel support, so that the fatigue resistance and reliability of the seismic isolation and reduction design of the whole bridge can be improved, the extra installation and maintenance of the damper arranged independently are avoided, and the appearance of the bridge is recovered.
The concrete structure of this embodiment is as follows, and as shown in fig. 1 and 2, a movable shock-absorbing mount for a bridge is installed between upper and lower structures (a girder and a pier) of a bridge structure. This shock mount mainly includes bottom suspension bedplate 2, vibration damping mount 3, spherical crown 4, eddy current damper 5, upper bracket board 6 and guide rail set spare 8, and upper bracket board 6 can be relative bottom suspension bedplate 2 along the direction motion of guide rail set spare 8. The damping base 3 is arranged above the lower support plate 2, a guide rail is fixed at the lower part of the damping base 3 and can slide along the horizontal direction relative to a sliding groove 8 on the lower support plate 2 (in some embodiments, the sliding guide rail can be fixed at the bottom of the damping base through a bolt, the length of the sliding guide rail is consistent with that of the damping base), and the guide rail can transmit the horizontal force in the non-sliding direction; there is a circular recess on vibration damping mount 3 upper portion, and the recess embeds the bulge of spherical crown 4 and upper bracket board (this bulge is cylindric in this embodiment, extends into the recess, and cylindric bellied lateral wall and recess inner wall cooperation) for spherical crown 4 can slide in vibration damping mount 3's recess, and upper bracket board 6 can be at vibration damping mount 3's internal rotation of recess. Wherein vibration damping mount 3 and bottom suspension bedplate 2 all are provided with between vibration damping mount 3 and spherical crown 4, spherical crown 4 and the upper bracket board 6 to slide or the rotational friction is vice, and the friction is vice to be constituteed by corrosion resistant plate and antifriction plate, and the antifriction plate is inlayed respectively among vibration damping mount 3, spherical crown 4 and upper bracket board 6. The fixing blocks 9 are arranged on two sides of the upper part of the lower support plate 2, two end parts (second fixing ends 41) of the eddy current damper assembly are fixed on the lower support plate 2 through the fixing blocks 9, a pair of wing plates 32 (shown in figure 3) respectively extend out of two sides of a main body 31 of the damping base 3, coaxial through holes are formed in the wing plates 32, the axis of each through hole is parallel to the horizontal movement direction of the damping base relative to the lower sliding plate assembly, and the eddy current damper 5 is installed between the pair of wing plates 32.
As shown in fig. 4 and 5, the eddy current damper assembly further includes a first fixing end (a nut fixing block 42) at both ends thereof, the screw 11, a rotating structure (a ball screw nut 44) mounted on the screw 11, and an eddy current damper mounted between the first fixing end and the ball screw 11. Wherein, one end of the nut fixing block 42 is fixed on the ball screw nut 44, the fixing of the nut fixing block needs to be firm without relative movement, and the other end is fixed on the damping base 3 of the seismic isolation bearing. When the upper support plate 6 slides relative to the lower support plate 2, the nut fixing block 42 drives the ball screw nut 44 to move on the screw rod 11, meanwhile, the ball screw nut 44 drives the screw rod 11 to rotate, and the rotation of the screw rod 11 drives the conductor inside the eddy current damper 5 to move relative to the magnetic steel, so that magnetic lines of force are cut, and damping is generated.
The specific structure of the eddy current damper 5 is shown in fig. 5, and the eddy current damper 5 includes a steel-aluminum composite cylinder 47 and an end fixing plate 48 fixed to one end of the steel-aluminum composite cylinder 7, which are fixed together by screws. A magnetic steel frame 49 is installed inside the steel-aluminum composite cylinder 47, and the magnetic steel frame 49 is matched with the steel-aluminum composite cylinder 47 through a thrust self-aligning roller bearing 51 and a deep groove ball bearing 52, so that the magnetic steel frame 49 can rotate relative to the steel-aluminum composite cylinder 47. A conductor is fixedly arranged on the inner wall of the steel-aluminum composite cylinder 47, and a magnetic steel 54 is arranged on the outer wall of the magnetic steel frame 49 corresponding to the conductor. The magnetic field generated by the magnetic steel 54 is perpendicular to the axial direction of the screw rod. The steel-aluminum composite cylinder 47 is fixedly connected with the second fixed end, and the lead screw 11 is fixedly connected with the magnetic steel frame 49.
When earthquake occurs, the upper structure of the bridge or the building moves horizontally to drive the upper bottom plate of the support to move together. Since the nut fixing block (vibration unit) 42 of the eddy current damper is connected to the vibration mount 3, the nut fixing block (vibration unit) 4 will move along with the upper structure of the bridge or building. When the nut fixing block 42 moves along the direction of the screw rod 11, the ball screw nut 43 drives the screw rod 11 to rotate, and the magnetic steel frame 49 rotates along with the screw rod 11 because both ends of the screw rod 11 are fixed on the magnetic steel frame 49 of the eddy current damper 5. At this time, the steel-aluminum composite cylinder 47 of the outer ring of the eddy current damper 5 is stationary, and the steel-aluminum composite cylinder 47 cuts the magnetic steel frame magnetic induction lines repeatedly, thereby forming eddy currents on the conductor (aluminum plate) of the inner layer of the steel-aluminum composite cylinder 47. The electric eddy current interacts with the original magnetic field to generate a force which hinders the relative motion between the steel-aluminum composite cylinder 47 and the magnetic field, namely a damping force, and the vibration energy of the structure is consumed, so that the purposes of reducing vibration and avoiding structural damage are achieved.
In some embodiments of the present invention, the upper portion of the lower seat plate 2 and the inside of the sliding groove may be covered with stainless steel plates, and the lower portion of the damping base 3 is embedded with modified ultra-high molecular weight polyethylene. The groove of the damping base 3 is covered with a stainless steel plate, and the lower part of the spherical crown 4 is embedded with modified ultrahigh molecular weight polyethylene. The curved surface of the spherical crown 4 is coated with a stainless steel plate, and the groove at the lower part of the upper support plate 6 is embedded with modified ultrahigh molecular weight polyethylene. The sliding pairs can enable adjacent components to slide or rotate relatively. In other embodiments, the arc portion of the spherical cap 4 may be made of chrome-plated or stainless steel plate. When the material of the spherical cap is aluminum alloy, chrome plating or stainless steel plate coating is not needed.
The upper bearing plate 6 is rotatable relative to the damper base 3 (about an axis in the vertical direction) and is movable in the horizontal direction together with the damper base 3 in the direction of the slide groove 8, is restrained by a guide rail in the direction perpendicular to the slide groove 8, and has a guide rail transmitting a horizontal force to the lower bearing plate 2. And the damper base 3 is movable in a horizontal direction with respect to the lower seat plate 2 along the rail assembly 8.
The lower support plate 2 is fixedly connected to the bridge pier through a lower anchorage steel bar 1, and the upper support plate 6 is fixedly connected to the upper structure (beam body) through an upper anchorage steel bar 7. The vertical load of structure is passed to spherical crown 4, vibration damping mount 3, bottom suspension bedplate 2 by upper bracket board 6 and finally is passed to the pier.
The fixed blocks 9 are fixed on two sides of the lower support plate 2 through bolts, and the eddy current damper rotary assembly is fixed between the fixed blocks 9 through a second fixed end 41. The horizontal load of the support structure in the moving direction can be transmitted to the shock absorption base 3 through the upper support plate 6, then transmitted to the eddy current damper 5 and the lower support plate 2, and finally transmitted to the pier.
When an earthquake occurs, the upper structure of the bridge or the building moves horizontally to drive the upper bottom plate of the support to move together. The motion of support upper plate can drive the lead screw and rotate to the inside magnet steel of drive eddy current damper and conductor relative motion drive the electric eddy current damping part and produce the damping force, consume the vibrations energy of structure, thereby reach and reduce vibrations, avoid structural damage's purpose.
In another embodiment of the present invention, an alternative structure of an eddy current damper assembly is provided, as shown in fig. 6 and 7, the eddy current damper assembly includes an end fixing block 61, a screw 62, a ball screw nut 63, a nut fixing block (vibration unit) 64, a screw dust cover 65, and an eddy current damper 66. The eddy current damper 66 has the same structure as the eddy current damper 5 shown in fig. 5, and the same reference numerals are used herein to describe that the terminal fixing plate 48 is fixedly connected to the terminal fixing block 61, and the lead screw 62 is fixedly connected to the magnetic steel frame 49, which is the same as the connection relationship in the previous embodiment. The difference is that a fixed end plate 67 is fixed on one of the end fixing blocks 61 at both ends, and the fixed end plate 67 is connected with a nut fixing block 64 outside the ball screw nut 63 through a bolt. The nut fixing block 64 is fixedly connected with the ball screw nut 63, and when the nut fixing block 64 drives the ball screw nut 63 to move on the screw 62, the ball screw nut 63 can drive the screw 62 to rotate. The arrangement is such that when the axial distance between the two end fixing blocks 61 changes, the nut fixing block 64 drives the ball screw nut 63 to move on the screw 62, and drives the screw 62 to rotate, so as to drive the components inside the eddy current damper 66 to rotate and cut magnetic lines of force, thereby generating damping. Thus, one end of the eddy current damper assembly can be fixed on the lower support plate 2, and the other end of the eddy current damper assembly can be fixed on the shock absorption base 3, so that when the shock absorption base 3 slides relative to the lower support plate 2, the eddy current damper assembly can generate corresponding damping.
In this embodiment, in order to protect the lead screw 11, a dust cover 45 may be added outside the lead screw 11.
For those skilled in the art, the structure of the eddy current damper and the structure of the transmission mechanism can be selected according to needs, namely, the horizontal movement of an earthquake can be converted into relative rotation of internal devices of the eddy current damper through the matching of threads (lead screws) and nuts, so that a rotary cutting magnetic field is realized, sufficient damping force is generated, vibration is reduced, and the purpose of avoiding structural damage is achieved.
Claims (9)
1. An eddy current damping steel support for a bridge comprises a lower support plate, an upper support plate, a vibration damping base positioned on the lower support plate and a spherical crown positioned between the vibration damping base and the upper support plate, wherein the vibration damping base is provided with a circular groove for accommodating the convex parts of the spherical crown and the upper support plate, the plane at the bottom of the spherical crown is matched with the surface in the groove, the spherical surface at the top of the spherical crown is matched with the bottom surface of the upper support plate, sliding or rotating friction pairs are arranged between the vibration damping base and the lower support plate, between the vibration damping base and the spherical crown, between the spherical crown and the upper support plate, and the support is characterized by further comprising,
a guide device provided between the damper base and the lower seat plate such that the damper base can slide along the guide device and the guide device can transmit a horizontal force in a non-slip direction; and the combination of (a) and (b),
install vibration damping mount with eddy current damper subassembly between the bedplate down, eddy current damper subassembly is including fixing the first stiff end on vibration damping mount, the second stiff end of fixing on bedplate down, the lead screw, rotating-structure and the eddy current damper of installing on the lead screw, wherein, when first stiff end moves for the second stiff end, can drive the lead screw with rotating-structure rotates relatively, and drives the inside magnet of eddy current damper is rotatory for the conductor plate, is the motion of cutting magnetic line of force.
2. The bridge eddy current damping steel support according to claim 1, wherein the magnet in the eddy current damper is a magnetic steel, the magnetic steel is fixed on a magnetic steel frame, and a magnetic field between the magnetic steel frame and the conductor plate is perpendicular to a moving direction of the cylinder.
3. The eddy current damping steel mount for bridge according to claim 1, wherein the rotation mechanism comprises a ball screw nut disposed on the screw, wherein movement of the ball screw nut on the screw can drive the screw to rotate, and wherein rotation of the screw can drive the internal magnet of the eddy current damper to rotate relative to the conductor plate.
4. The eddy current damping steel mount for bridge according to claim 3, wherein the friction pair is composed of a stainless steel plate and wear-resistant plates, and the wear-resistant plates are respectively embedded in the damping base, the spherical crown and the upper mount plate.
5. The eddy current damping steel support for the bridge according to claim 4, wherein the wear plate is modified ultra-high molecular weight polyethylene.
6. The eddy current damping steel mount for a bridge according to claim 3, wherein the friction pair comprises a spherically chrome-plated or stainless-coated steel plate on the spherical cap.
7. The eddy current damping steel mount for the bridge according to claim 3, wherein the guide means comprises a guide rail disposed at the bottom of the damping mount and a sliding groove disposed on the lower mount plate to be engaged with the guide rail.
8. The steel support for electric eddy current damping of a bridge according to one of claims 3 to 7, wherein the first fixing end comprises a nut fixing block fixed on the ball screw nut, and the second fixing end comprises end portions located at two ends of the electric eddy current damper assembly, and the nut fixing block can drive the ball screw nut to move on the screw so as to drive the screw to rotate; the eddy current damper comprises a steel-aluminum composite cylinder and a magnetic steel frame arranged in the steel-aluminum composite cylinder, and the magnet is arranged on the magnetic steel frame on which the conductor plate is fixed on the inner wall of the steel-aluminum composite cylinder; the second fixed end is fixedly connected with the steel-aluminum composite cylinder, and the lead screw is fixedly connected with the magnetic steel frame.
9. The steel support for electric eddy current damping of a bridge according to one of claims 3 to 7, wherein the first fixing end and the second fixing end are ends located at both ends of the electric eddy current damper assembly, respectively; a nut fixing block is fixed on the ball screw nut, the ball screw nut can be driven by the nut fixing block to move on the screw so as to drive the screw to rotate, and one of the first fixing end or the second fixing end is fixedly connected with the nut fixing block; the eddy current damper comprises a steel-aluminum composite cylinder and a magnetic steel frame arranged in the steel-aluminum composite cylinder, and the magnet is arranged on the magnetic steel frame on which the conductor plate is fixed on the inner wall of the steel-aluminum composite cylinder; the lead screw is fixedly connected with the magnetic steel frame, the second fixed end is fixedly connected with the eddy current damper at one end, and the first fixed end is fixedly connected with the eddy current damper at the other end.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011034823.8A CN112160235A (en) | 2020-09-27 | 2020-09-27 | Eddy current damping steel support for bridge |
| CN202122083007.2U CN216275199U (en) | 2020-09-27 | 2021-08-31 | Eddy current damping steel support for bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011034823.8A CN112160235A (en) | 2020-09-27 | 2020-09-27 | Eddy current damping steel support for bridge |
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| CN112160235A true CN112160235A (en) | 2021-01-01 |
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| CN202122083007.2U Active CN216275199U (en) | 2020-09-27 | 2021-08-31 | Eddy current damping steel support for bridge |
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| CN211341175U (en) * | 2019-12-09 | 2020-08-25 | 江苏路博减振技术有限公司 | Viscous damping support |
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