CN109989336B - Wind-resistant shock-absorbing bridge suspender for vibration isolation by using magnetic suspension technology - Google Patents
Wind-resistant shock-absorbing bridge suspender for vibration isolation by using magnetic suspension technology Download PDFInfo
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- CN109989336B CN109989336B CN201910342134.4A CN201910342134A CN109989336B CN 109989336 B CN109989336 B CN 109989336B CN 201910342134 A CN201910342134 A CN 201910342134A CN 109989336 B CN109989336 B CN 109989336B
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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
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Abstract
The invention discloses a wind-resistant and shock-absorbing bridge suspender for carrying out vibration isolation by using a magnetic suspension technology, wherein an excitation coil is wound on the outer side of a suspender body along the axial direction of the suspender body, a sleeve is sleeved on the excitation coil and is fixedly connected with the suspender body, a first outer shell is cylindrical and is sleeved on the sleeve and is positioned on the outer side of the excitation coil just opposite to the excitation coil, and the excitation coil is electrified to form electromagnetic force outwards along the radial direction of the suspender body on the first outer shell. Receive the wind load of both sides at first shell body, through the electric current that changes excitation coil, can arouse the change of electromagnetic force, form the radial outside electromagnetic force along the jib body to first shell body, make jib body and first shell body be similar to in the radial effect that obtains separating, do not have frictional force, only radial effort to control the atress more easily, the energy dissipation is effectual.
Description
Technical Field
The invention relates to the technical field of building bridges, in particular to a wind-resistant and shock-absorbing bridge suspender for carrying out vibration isolation by using a magnetic suspension technology.
Background
The suspension rod is generally used in bridge construction, endures wind and rain for a long time, and has a bad use environment, but the suspension rod is an important component in the bridge structure. As in suspension bridges, the suspension rods are rods connecting the suspension cables and the deck system, through which the load of the deck system is transferred to the suspension cables. With the continuous development of the bridge industry, various types of bridges are more and more. For example, as the span of a half-through or underslung arch bridge increases, the longer and more flexible the boom, the more sensitive it is to the wind, and the less stable it is to the wind.
The jib in the bridge, when both sides received the influence of wind, lead to wind to cause the vibration easily, in the prior art, many jib structures have been studied, mostly all increase relevant anti-wind device on the both sides of jib, but because wind probably blows to the jib or blows from the both sides of jib from all directions, consequently in the device now, it is inhomogeneous in fact to the ability of anti-wind, can not deal with the blowing of multiple direction simultaneously, adaptability is poor, and many anti-wind devices all can pass back jib itself to the transmission of force at anti-wind in-process, the remedy to the symptoms does not need the basis.
Disclosure of Invention
In view of the above, the present invention provides a wind-resistant and vibration-damping bridge suspension rod using magnetic levitation technology to perform vibration isolation, which can perform energy dissipation and vibration damping on wind around the suspension rod well for the surrounding environment of the suspension rod, and has a good wind-resistant effect.
A wind-resistant and shock-absorbing bridge suspender for vibration isolation by using a magnetic levitation technology comprises a suspender body and a wind-resistant device arranged on the suspender body, wherein the wind-resistant device comprises a magnet exciting coil, a sleeve and a first outer shell, the first outer shell is made of a permanent magnetic material, the magnet exciting coil is wound on the outer side of the suspender body along the axial direction of the suspender body, the sleeve is externally sleeved on the magnet exciting coil and is fixedly connected with the suspender body, the first outer shell is cylindrical and externally sleeved on the sleeve and is also positioned on the outer side of the magnet exciting coil just opposite to the magnet exciting coil, the first outer shell is composed of at least two outer shell sheets, the shape of each outer shell sheet is the same, the first outer shell is formed by arranging the first outer shell in the circumferential direction, and the wind-resistant device further comprises a second outer shell for limiting the axial direction of the first, the terminal surface of second shell body forms and is used for the tip of shell piece carries out spacing groove, the second shell body with jib body fixed connection, thereby the spacing groove with thereby clearance setting is used for carrying on spacingly to the radial of shell piece simultaneously between the shell piece, excitation coil circular telegram forms along the radial outside electromagnetic force of jib body to first shell body.
Furthermore, the both ends of shell piece are provided with the bead, the spacing groove sets up the annular of second shell body terminal surface, through the bead with the spacing groove cooperation.
Furthermore, the section of the convex edge is annular, and the end face of each shell piece is provided with at least one convex edge.
Further, the external diameter of second shell body with the external diameter of first shell body equals, and two adjacent relative terminal surfaces of second shell body are used for respectively the both ends of first shell body are spacing, first shell body and second shell body pile up in proper order and form the overcoat in the outer tubular structure of sleeve.
Further, the second shell body is fixedly connected with the suspender body through a connecting rib, two ends of the connecting rib are respectively connected to the sleeve and the shell piece, and the connecting rib is made of damping materials.
Further, the connecting rib is arranged along the circumferential direction of the suspender body.
Further, the sleeve is made of a magnetic conductive material, one section of the hanger rod body located in the first outer shell is made of the magnetic conductive material, and the second outer shell is made of the non-magnetic conductive material.
Further, the upper end of jib body is fixed and is provided with the bulge loop, the outside of bulge loop is provided with the external screw thread, telescopic upper end corresponds is provided with the internal thread, the sleeve passes through bulge loop and jib body threaded connection.
Further, telescopic lower extreme opening and through the end cover with jib body sealing connection, be provided with on the end cover and be used for excitation coil's cable abdication's via hole.
Further, the part of the cable of the excitation coil, which is positioned outside the sleeve, is spirally wound outside the suspender body.
The invention has the beneficial effects that: the invention relates to a wind-resistant and shock-absorbing bridge suspender for carrying out vibration isolation by using a magnetic suspension technology, wherein an excitation coil is wound on the outer side of the suspender body along the axial direction of the suspender body, a sleeve is externally sleeved on the excitation coil and is fixedly connected with the suspender body, a first outer shell is cylindrical and is externally sleeved on the sleeve and is positioned on the outer side of the excitation coil just opposite to the excitation coil, and the excitation coil is electrified to form electromagnetic force outwards along the radial direction of the suspender body on the first outer shell. The first outer shell is subjected to wind load on two sides, electromagnetic force can be changed by changing current of the magnet exciting coil, the electromagnetic force which is outwards along the radial direction of the suspender body is formed on the first outer shell, so that the effect of separating the suspender body and the first outer shell in the radial direction is similar to the effect of obtaining separation, friction force does not exist, and only acting force in the radial direction exists. First shell body receives wind-force radially, offsets through the electromagnetic force, and the electromagnetic force counteracts on the jib body, offsets through the reverse electromagnetic force of jib body, has realized the energy dissipation. The device has single stress, and can convert the wind and rain action into the action force along the radial direction of the suspender body no matter which direction the wind and rain action is, thereby controlling the stress more easily and having good energy dissipation effect.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at C;
FIG. 3 is a schematic view of the structure of FIG. 1 taken along A-A;
fig. 4 is a schematic structural view taken along B-B in fig. 1.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention, fig. 2 is an enlarged view of fig. 1 at C, fig. 3 is a schematic structural view along a-a of fig. 1, and fig. 4 is a schematic structural view along B-B of fig. 1. The invention relates to a wind-resistant and shock-absorbing bridge suspender for carrying out vibration isolation by using a magnetic levitation technology, which comprises a suspender body 1 and a wind-resistant device arranged on the suspender body 1, wherein the wind-resistant device comprises an excitation coil 2, a sleeve 3 and a first outer shell 4, the first outer shell 4 is made of a permanent magnetic material, the excitation coil 2 is wound on the outer side of the suspender body 1 along the axial direction of the suspender body 1, the sleeve 3 is sleeved on the excitation coil 2 and is fixedly connected with the suspender body 1, the first outer shell 4 is cylindrical and sleeved on the sleeve 3 and simultaneously faces the excitation coil 2 to be positioned on the outer side of the excitation coil 2, the first outer shell 4 is composed of at least two outer shell sheets, the embodiment comprises a first outer shell sheet 401 and a second outer shell sheet 402, the shapes of the outer shell sheets are the same, and the first outer shell sheet 4 is formed by arranging along the circumferential direction of the first, the wind resisting device is characterized in that the wind resisting device further comprises a second outer shell 5 which is used for limiting the axial direction of the first outer shell 4, the end face of the second outer shell 5 is formed to be used for limiting a limiting groove 501 formed in the end portion of each outer shell, the second outer shell 5 is fixedly connected with the suspender body 1, the limiting groove 501 is formed in the gap between the outer shells to limit the radial direction of the outer shells, and the magnet exciting coil 2 is electrified to form the radial outward electromagnetic force along the suspender body 1 on the first outer shell 4.
According to the wind-resistant and shock-absorbing bridge suspender for vibration isolation by using the magnetic levitation technology, the excitation coil 2 is wound on the outer side of the suspender body 1 along the axial direction of the suspender body 1, the sleeve 3 is externally sleeved on the excitation coil 2 and is fixedly connected with the suspender body 1, the first outer shell 4 is cylindrical and is externally sleeved on the sleeve 3 and is positioned on the outer side of the excitation coil 2 opposite to the excitation coil 2, and the excitation coil 2 is electrified to form electromagnetic force outwards along the radial direction of the suspender body 1 on the first outer shell 4. The wind load on the two sides of the first outer shell 4 is changed by changing the current of the exciting coil 2, so that the electromagnetic force is changed along the radial direction of the suspender body 1 to the first outer shell 4, and the suspender body 1 and the first outer shell 4 are similar to the separated effect in the radial direction, and have no friction force and only have acting force in the radial direction. First shell body 4 receives wind-force radially, offsets through the electromagnetic force, and the electromagnetic force is reverse to be used on the jib body, offsets through 1 reverse electromagnetic force of jib body, has realized the energy dissipation. The device has single stress, and can convert the wind and rain action into the action force along the radial direction of the suspender body 1 no matter in which direction, thereby being easier to control the stress and having good energy dissipation effect.
The first casing piece 401 and the second casing piece 402 described in this embodiment are symmetrical with respect to the central vertical section of the first casing 4, and are combined to form the cylindrical first casing 4, and the specific shape can be understood and will not be described herein again. At the combined contact position, a slight gap exists, so that the first housing piece 401 and the second housing piece 402 can move along the radial direction at the position limited by the limiting groove 501, and thus wind can act on the surfaces of the first housing piece 401 and the second housing piece 402 along the radial direction to counteract the electromagnetic force.
In this embodiment, the two ends of the housing piece are provided with protruding ribs 6, and the limiting groove is disposed in the annular groove of the second housing end surface, through the protruding ribs 6 and the limiting groove 501. Through setting up bead 6 and spacing groove 501 and cooperate, it is easier to assemble.
In this embodiment, the cross section of the protruding rib 6 is annular, and at least one protruding rib 6 is disposed on the end surface of each shell piece. The annular convex ridge 6 can limit the vibration space of the shell piece, so that the shell piece can dissipate energy in the specified space, and the effect is better.
In this embodiment, the outer diameter of the second outer shell 5 is equal to the outer diameter of the first outer shell 4, the opposite end surfaces of two adjacent second outer shells are respectively used for limiting the two ends of the first outer shell 4, and the first outer shell 4 and the second outer shell 5 are sequentially stacked to form a cylinder structure sleeved outside the sleeve. The outer diameter of the second outer shell 5 is equal to that of the first outer shell 4, and the combined outer surface is of a cylindrical structure in appearance, so that the whole structure is easier to dissipate energy, the damping is smaller, and other redundant acting force cannot exist.
In this embodiment, the second housing 5 is fixedly connected to the suspender body 1 through the connecting rib 7, two ends of the connecting rib 7 are connected to the sleeve 3 and the housing piece respectively, the connecting rib 7 is made of a damping material, radial acting force of the second housing 5 can also dissipate energy through the connecting rib, and the wind resistance of the device is further improved. In this embodiment, the connecting rib 7 is arranged along the circumferential direction of the suspender body 1, so that the stress is more uniform, and the radial direction can be mutually offset.
In this embodiment, the sleeve 3 is made of a magnetic conductive material, a section of the suspension rod body 1 located in the first outer shell 4 is made of a magnetic conductive material, and the second outer shell 5 is made of a non-magnetic conductive material.
In this embodiment, the fixed bulge loop 8 that is provided with in upper end of jib body 1, the outside of bulge loop 8 is provided with the external screw thread, the upper end correspondence of sleeve 3 is provided with the internal thread, sleeve 3 passes through bulge loop 8 and 1 threaded connection of jib body.
In this embodiment, the lower extreme opening of sleeve 3 and through end cover 9 with jib body 1 sealing connection, be provided with on the end cover 9 and be used for excitation coil 2's cable carries out the via hole of stepping down.
In this embodiment, excitation coil 2's cable is located the outer part of sleeve 3 and is the spiral winding in jib body 1's the outside, if under weather that the wind and rain was handed over, adopt the spiral winding, can eliminate the rain line on jib body 1, prevent that the influence of rain line to jib body 1 need not set up unnecessary helix on jib body 1, has saved the material, the cost is reduced.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides an application magnetic suspension technique carries out anti-wind shock attenuation bridge jib of vibration isolation which characterized in that: the wind-resistant device comprises a suspender body and a wind-resistant device arranged on the suspender body, wherein the wind-resistant device comprises a magnet exciting coil, a sleeve and a first outer shell, the first outer shell is made of a permanent magnetic material, the magnet exciting coil is wound on the outer side of the suspender body along the axial direction of the suspender body, the sleeve is externally sleeved on the magnet exciting coil and is fixedly connected with the suspender body, the first outer shell is cylindrical and externally sleeved on the sleeve, the magnet exciting coil is positioned on the outer side of the magnet exciting coil, the first outer shell is composed of at least two outer shell pieces, the outer shell pieces are identical in shape and are arranged along the circumferential direction of the first outer shell to form the first outer shell, the wind-resistant device further comprises a second outer shell used for limiting the axial direction of the first outer shell, and the end face of the second outer shell piece is formed into a limiting groove used for limiting the end part, the second shell with jib body fixed connection, thereby the spacing groove with thereby the clearance sets up between the shell piece and is used for carrying on spacingly to the radial while of shell piece, and the shell piece can be along radially removing, the external diameter of second shell with the external diameter of first shell body equals, and two adjacent relative terminal surfaces of second shell body are used for respectively the both ends of first shell body are carried on spacingly, first shell body and second shell body pile up in proper order and form overcoat in the outer tubular construction of sleeve, excitation coil circular telegram forms the radial outside electromagnetic force along the jib body to first shell body.
2. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation according to claim 1, wherein: the both ends of shell piece are provided with the bead, the spacing groove sets up the annular of second shell body terminal surface, through the bead with the spacing groove cooperation.
3. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation as claimed in claim 2, wherein: the section of the convex edge is annular, and the end face of each shell piece is provided with at least one convex edge.
4. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation as claimed in claim 3, wherein: the second shell body is fixedly connected with the suspender body through a connecting rib, two ends of the connecting rib are respectively connected to the sleeve and the shell piece, and the connecting rib is made of damping materials.
5. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation as claimed in claim 4, wherein: the connecting ribs are arranged along the circumferential direction of the suspender body.
6. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation according to claim 1, wherein: the sleeve is made of a magnetic conductive material, the hanger rod body is located in one section of the first outer shell and made of the magnetic conductive material, and the second outer shell is made of the magnetic non-conductive material.
7. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation according to claim 1, wherein: the upper end of the suspender body is fixedly provided with a convex ring, the outer side of the convex ring is provided with an external thread, the upper end of the sleeve is correspondingly provided with an internal thread, and the sleeve is in threaded connection with the suspender body through the convex ring.
8. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation according to claim 7, wherein: telescopic lower extreme opening and through the end cover with jib body sealing connection, be provided with on the end cover and be used for the cable of excitation coil steps down the via hole.
9. The wind-resistant vibration-damping bridge hanger rod using magnetic levitation technology for vibration isolation according to claim 8, wherein: the part of the cable of the excitation coil, which is positioned outside the sleeve, is spirally wound outside the suspender body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342134.4A CN109989336B (en) | 2019-04-26 | 2019-04-26 | Wind-resistant shock-absorbing bridge suspender for vibration isolation by using magnetic suspension technology |
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| CN201910342134.4A CN109989336B (en) | 2019-04-26 | 2019-04-26 | Wind-resistant shock-absorbing bridge suspender for vibration isolation by using magnetic suspension technology |
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| CN109989336B true CN109989336B (en) | 2020-10-09 |
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| US5706168A (en) * | 1995-07-07 | 1998-01-06 | Itronix Corporation | Impact-resistant notebook computer having hard drive mounted on shock-isolating mounting bridge and impact attenuating covering |
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