Bridge expansion joint device
A technology for expansion joints and bridges, which can be used in bridges, bridge construction, bridge parts, etc., to solve problems such as recession, disappearance, and limitation of elastic restoring force.
Pending Publication Date: 2022-01-14
CHANGSHU BAODE BRIDGE COMPONENTS CO LTD
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Problems solved by technology
[0004] Still as known in the industry, the shock absorbing mechanism is an indispensable and important part in the bridge expansion joint device. The prior art generally uses the combination of rubber and polytetrafluoroethylene or the combination of rubber and metal plate as the shock absorbing part, for example The side of the rubber facing the pressure-bearing surface is combined with a polytetrafluoroethylene plate or a metal plate, but due to the aging of the rubber, the service life is limited or the elastic recovery force declines or even disappears after a short period of use. Thus affecting the due function of the entire bridge expansion joint device
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[0018] In order to understand the technical essence and beneficial effects of the present invention more clearly, the applicant will describe in detail the following examples, but the descriptions of the examples are not intended to limit the solutions of the present invention. Equivalent transformations that are only formal but not substantive should be regarded as the scope of the technical solution of the present invention.
[0019] In the following descriptions, all concepts related to directionality or orientation of up, down, left, right, front and back are based on figure 1 The location status is taken as an example, so it cannot be understood as a special limitation on the technical solution provided by the present invention.
[0020] See figure 1 and combine figure 2 , in order to facilitate the understanding of the present invention, in figure 1 A bridge girder body 5 is shown in figure 2 Two bridge girder bodies 5 are shown in , and expansion joints 6 reserved...
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A bridge expansion joint device comprises an expansion joint shielding mechanism, a supporting cross beam is supported on a damping mechanism, and the bridge expansion joint device is characterized in that the damping mechanism comprises a box body, a box cover, a cross beam supporting end upper pressing device, a base plate and a cross beam supporting end lower supporting device, the box body is arranged on a bridge body, and the box cover covers the box body in a matched mode; the cross beam supporting end upper pressing device comprises a cross beam supporting end upper pressing wear-resisting plate and a cross beam supporting end upper pressing supporting block, the base plate is stacked above the cross beam supporting end upper pressing supporting block, and the cross beam supporting end lower supporting device comprises a cross beam supporting end wear-resisting supporting plate and a cross beam supporting end pressure-bearing supporting block; the expansion joint shielding mechanism is fixed with the middle part of the supporting cross beam and the box cover; the cross beam supporting end upper pressing supporting block and the cross beam supporting end pressure-bearing supporting block are polyurethane blocks, and the cross beam supporting end upper pressing wear-resisting plate and the cross beam supporting end wear-resisting supporting plate are polyfluortetraethylene plates. And the excellent damping effect is permanently guaranteed, and the sliding wear-resisting requirement of the bearing cross beam and the expected long-term service requirement are met.
Description
technical field [0001] The invention belongs to the technical field of bridge auxiliary components, and in particular relates to a bridge expansion joint device. Background technique [0002] As known in the industry, due to the influence of changes in the natural environment, objects will expand with heat and contract with cold (also known as "expansion and contraction"), so it is not limited to examples such as rivers, lakes and seas, railways, especially high-speed railways, and urban viaducts. For beams (also known as "viaducts"), it is usually necessary to set a beam gap between two adjacent girder bodies with predetermined beam lengths. sewing device. The advantages of the expansion joint device are at least: satisfying the free deformation of the bridge structure under the influence of factors such as temperature changes and vehicle loads, reducing earthquake hazards, improving driving comfort, preventing sundries and rainwater invasion, and improving the overall vie...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E01D19/06
CPCE01D19/062E01D19/065
Inventor 蒋澍钧
Owner CHANGSHU BAODE BRIDGE COMPONENTS CO LTD