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A multifunctional jack used for erecting simply supported steel girders of cross-sea bridges

A technology for cross-sea bridges and jacks is applied in bridge construction, bridges, and erection/assembly of bridges.

Active Publication Date: 2021-08-03
CHINA RAILWAY BRIDGE SCI RES INST LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing steel girder buffer structure cannot quickly and stably erect simply supported steel truss girders in complex sea areas

Method used

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  • A multifunctional jack used for erecting simply supported steel girders of cross-sea bridges

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Embodiment Construction

[0019] The invention provides a multifunctional jack used for erecting a simply supported steel girder of a cross-sea bridge, which can realize buffering and energy consumption functions in the process of hoisting the girder and precise adjustment of the position of the steel girder after the girder falls. The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, the present invention provides a multifunctional jack for erecting simply supported steel girders of cross-sea bridges, which is fixed on the pier and includes a jack main body 1 and an oil circuit system, wherein the jack main body 1 is hydraulic. The oil circuit system communicates with the hydraulic chamber of the jack body 1, including the first oil circuit 2 and the second oil circuit 3 arranged on both sides of the jack body 1, the end of the first oil circuit 2 is provided with an accumulator 6, and the jac...

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Abstract

The invention discloses a multifunctional jack for erecting a simply supported steel girder of a cross-sea bridge, comprising a jack main body and an oil circuit system, the main body of the jack adopts a hydraulic type; The first oil circuit and the second oil circuit on both sides of the main body, the end of the first oil circuit is provided with an accumulator, a damping valve is provided between the jack body and the accumulator, and a hydraulic pump station is provided at the end of the second oil circuit , the configuration of the oil circuit system is: during the steel beam erection process, the second oil circuit is closed, the first oil circuit is unblocked, the damping valve and the accumulator are in working condition; after the steel beam falls, the second oil circuit is unblocked, the first oil circuit is Road closed. The present invention has a simple structure, combines the jacking function of the jack body, the buffering function of the accumulator and the energy consumption function of the damping valve, and can simultaneously satisfy the buffering and energy consumption functions in the process of lifting the beam and the precise adjustment of the position of the steel beam after the beam falls , improve the efficiency of steel beam erection, and have excellent results in practical applications.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a multifunctional jack used for erecting simply supported steel girders of cross-sea bridges. Background technique [0002] As an important structure of cross-sea bridges, large-segment steel girders have the characteristics of high quality, high processing technology requirements, and high cost. In addition, during the construction of steel girder facilities, in order to avoid the adverse effects of the complex sea environment and reduce the construction time at sea, the scheme of prefabrication and assembly on the shore, and then floating crane erection is generally adopted. When steel girders are erected in complex sea areas, affected by environmental factors such as waves, wind, and currents, the steel girders will vibrate significantly, and when the beams fall, the steel girders collide with the brackets and related components beside the pier, which affects const...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 潘东发张红心张立超王东辉刘鹏飞王波吴肖波柴小鹏龚金才廖远李鑫刘永酃
Owner CHINA RAILWAY BRIDGE SCI RES INST LTD
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