Laminated magneto-rheological vibration isolation support based on transmission lifting device

Abstract

The invention belongs to the field of bridge vibration isolation, and particularly relates to a laminated magneto-rheological vibration isolation support based on a transmission lifting device. The support comprises an upper steel disc, a lower steel disc, an upper permanent magnet, a lower permanent magnet, a laminated supporting mechanism, a lead core, a lower supporting shell and a lifting device, the upper permanent magnet is attracted to the bottom face of the upper steel disc, the lower permanent magnet is arranged in the lower supporting shell, and the lower permanent magnet moves up and down in the lower supporting shell through the lifting device. The laminated supporting mechanism is cylindrical and is formed by alternately vulcanizing magneto-rheological elastomers and steel plates, and a through hole is formed in the center of the laminated supporting mechanism; the lead core is arranged in a through hole of the laminated supporting mechanism in a penetrating mode, and thelower end of the lead core is fixedly connected with the lower supporting shell. According to the vibration isolation support, the distance between the upper permanent magnet and the lower permanent magnet is changed through the lifting device, a magnetic field with the adjustable strength is generated, particularly, the shearing modulus in the horizontal direction is large enough, and the large shearing force effect in the horizontal direction can be resisted.

Description

technical field

[0001] The invention belongs to the field of bridge vibration isolation, and in particular relates to a laminated magnetorheological vibration isolation support based on a transmission lifting device. Background technique

[0002] When the bridge is threatened by earthquake action, it often produces a large impact destructive force and displacement at the pier-beam joint, resulting in damage to the bridge structure, so the vibration isolation structure is particularly important. The vibration isolation structure is installed between the foundation and the vibration isolation object to reduce the seismic energy transmitted from the foundation to the vibration isolation object, and to block the transmission of seismic energy to the upper structure, thereby reducing the damage of the upper structure during an earthquake. The seismic isolation technology has a clear idea of ​​shock absorption and obvious shock absorption effect, which can effectively resist earth...

Examples

Embodiment Construction

[0037] Such as figure 1 As shown, the laminated magnetorheological vibration isolation support based on the transmission lifting device provided by the present invention includes an upper steel plate 1, a lower steel plate 16, an upper permanent magnet 2, a lower permanent magnet 9, a laminated support mechanism 3, a lead The core 6, the lower support shell 7 and the lifting device; the upper permanent magnet 2 is adsorbed on the bottom of the upper steel plate 1; the laminate support mechanism 3 is connected with the upper permanent magnet 2 and the lower support shell 7; the laminate support machine 3 adopts Damping magnetorheological elastomer-steel plate vulcanized lamination, the lower supporting shell 7 is connected to the lower steel plate 16 of the support; the lifting device includes a sleeve 8, a circular lifting platform 10, a connecting plate 12, a screw 11, a transverse Gear 13, vertical gear 14 and hand crank 15; Sleeve 8 is fixedly connected with lower steel pla...

technical field

[0001] The invention belongs to the field of bridge vibration isolation, and in particular relates to a laminated magnetorheological vibration isolation support based on a transmission lifting device. Background technique

[0002] When the bridge is threatened by earthquake action, it often produces a large impact destructive force and displacement at the pier-beam joint, resulting in damage to the bridge structure, so the vibration isolation structure is particularly important. The vibration isolation structure is installed between the foundation and the vibration isolation object to reduce the seismic energy transmitted from the foundation to the vibration isolation object, and to block the transmission of seismic energy to the upper structure, thereby reducing the damage of the upper structure during an earthquake. The seismic isolation technology has a clear idea of ​​shock absorption and obvious shock absorption effect, which can effectively resist earth...

Examples

Embodiment Construction

[0037] Such as figure 1 As shown, the laminated magnetorheological vibration isolation support based on the transmission lifting device provided by the present invention includes an upper steel plate 1, a lower steel plate 16, an upper permanent magnet 2, a lower permanent magnet 9, a laminated support mechanism 3, a lead The core 6, the lower support shell 7 and the lifting device; the upper permanent magnet 2 is adsorbed on the bottom of the upper steel plate 1; the laminate support mechanism 3 is connected with the upper permanent magnet 2 and the lower support shell 7; the laminate support machine 3 adopts Damping magnetorheological elastomer-steel plate vulcanized lamination, the lower supporting shell 7 is connected to the lower steel plate 16 of the support; the lifting device includes a sleeve 8, a circular lifting platform 10, a connecting plate 12, a screw 11, a transverse Gear 13, vertical gear 14 and hand crank 15; Sleeve 8 is fixedly connected with lower steel pla...

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