CN212175455U - Bridge bearing - Google Patents

Abstract

The utility model relates to a bridge bearing, which belongs to the technical field of bridge bearings and comprises an upper support plate, a spherical lining plate and a lower support plate, wherein a plane friction pair is arranged between the upper support plate and the spherical lining plate, a rotational friction pair is arranged between the spherical lining plate and the lower support plate, a piston combination is fixed below the lower support plate, the piston combination and the base form a sealed space, the piston combination moves up and down in the cavity of the base, a valve is arranged on the base, phase-change silicone grease is injected in the cavity of the base, when the bridge bearing is replaced, the base is heated, when the phase-change silicone grease is changed from a solid state to a liquid state, the valve on the base is opened, the phase-change silicone grease flows out of the cavity, the piston combination drives the structure above the piston combination to move down, thereby realizing the function of reducing the height of the support, avoiding jacking the beam body to a large extent, the bridge bearing is more convenient to replace, convenient to disassemble and assemble, short in time and energy-saving.

Description

Bridge bearing

Technical Field

The utility model relates to a bridge beam supports technical field especially relates to a need not to intersect, easy to change's bridge beam supports.

Background

In recent years, with the increase of the investment of infrastructure, the construction of highway and railway bridge engineering is rapidly developed. In the bridge construction process, the beam body and the bridge pier are connected into a whole through the bridge support, and the bridge support is widely applied. Because the bridge beam supports need to bear bridge vertical load and horizontal load to under earthquake, external force striking or the condition of corroding ageing, the bridge beam supports can take place to damage, loses the due function of bridge beam supports, for avoiding influencing the normal use of bridge, need change the bridge beam supports who damages. When the bridge support is replaced, the jack mechanism is required to jack the beam body for at least two centimeters, so that a moving space is provided for the bridge support to be replaced, the bridge support to be replaced is pulled out, and a new bridge support is inserted. The replacement of the existing common bridge support generally needs bridge cross-cut restriction, then the bridge is jacked by a jack for about two centimeters, the telescopic damage of the end part of a beam is easily caused in the jacking process, a large amount of energy consumption and energy waste can be caused, and the replacement method of the common bridge support is complex, long in time consumption and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can not cause the damage to the roof beam body and additional structure, need not the friendship and can accomplish bridge beam supports's change, it is convenient to change, weak point consuming time, energy saving's bridge beam supports moreover.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a bridge beam supports, from the top down includes upper bracket board, spherical lining board, bottom suspension bedplate in proper order, has plane friction vice between upper bracket board and the spherical lining board, has the rotational friction vice between spherical lining board and the bottom suspension bedplate, and a piston combination is fixed below the bottom suspension bedplate, and piston combination and base form confined space, and the piston combination is movable from top to bottom in the cavity of base, and the ann has the valve on the base, and it has phase transition silicone grease to annotate in the cavity of base.

In the bridge bearing, the heat insulation base plate is arranged between the lower bearing plate and the piston combination.

In the bridge support, the lower support plate and the piston combination are fixed through the bolts.

Compared with the prior art, the bridge bearing adopting the structure has the following advantages: annotate in the cavity of base and have phase change silicone grease, be solid-state under the normal atmospheric temperature, when changing bridge beam supports, heat bridge beam supports's base, when heating temperature reached phase change silicone grease critical temperature above, phase change silicone grease is changed into liquid by solid-state, opens the valve on the base, and phase change silicone grease flows out the cavity, and the piston combination drives the structure of its top and moves down to realize the reduction function of support height. When changing bridge beam supports, can avoid the great range jacking roof beam body, through the jacking height that reduces the roof beam body, avoid causing the damage to the roof beam body and additional structure, need not the friendship moreover and can accomplish bridge beam supports's change, it is more convenient to make bridge beam supports change, easy dismounting, weak point consuming time, the energy saving.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Referring to fig. 1, the device sequentially comprises an upper support plate 1, a spherical lining plate 2 and a lower support plate 3 from top to bottom, wherein a plane friction pair is arranged between the upper support plate 1 and the spherical lining plate 2, a rotary friction pair is arranged between the spherical lining plate 2 and the lower support plate 3, a piston combination 5 is fixed below the lower support plate 3, the piston combination 5 moves up and down in a cavity of a base 7, a valve 9 is arranged on the base 7, and phase-change silicone grease 6 is injected in the cavity of the base 7; a heat insulation backing plate 4 is arranged between the lower support plate and the piston combination; the lower support plate and the piston combination are fixed through a bolt 8. When changing bridge beam supports, twine the heating band on bridge beam supports's base, ohmic heating, inside heat conduction base, when heating temperature reached more than phase transition silicone grease critical temperature, phase transition silicone grease was changed into liquid by the solid-state, opened the valve on the base, phase transition silicone grease flowed out the cavity, and the structure that the piston combination drove its top moved down to realize the reduction function of support height. When changing bridge beam supports, can avoid the great range jacking roof beam body, through the jacking height that reduces the roof beam body, avoid causing the damage to the roof beam body and additional structure, need not the friendship moreover and can accomplish bridge beam supports's change, it is more convenient to make bridge beam supports change, easy dismounting, weak point consuming time, the energy saving.

Claims (3)

1. The utility model provides a bridge beam supports, from the top down includes upper bracket board, spherical liner board, bottom suspension bedplate in proper order, has between upper bracket board and the spherical liner board that plane friction is vice, has between spherical liner board and the bottom suspension bedplate rotational friction vice, its characterized in that: a piston combination is fixed below the lower support plate, a sealed space is formed by the piston combination and the base, the piston combination moves up and down in a cavity of the base, a valve is arranged on the base, and phase-change silicone grease is injected in the cavity of the base.

2. A bridge support according to claim 1, wherein: a heat insulation backing plate is arranged between the lower support plate and the piston combination.

3. A bridge support according to claim 1 or 2, wherein: the lower support plate and the piston combination are fixed through bolts.

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