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Thin jack device for bridge lifting

A jack, jacking technology, applied in the direction of lifting device, bridge, bridge construction, etc., can solve problems such as failure of jack support, chain reaction, and increased force on construction trailers

Inactive Publication Date: 2014-10-15
CHINA ENG CONSULTANTS +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, if the construction trailer is used as a point support, if the weight of the upper structure of the bridge is displaced due to differences during jacking up, it will be concentrated on one side due to tilt transfer, resulting in increased stress on the construction trailer and failure of the jack support, which may lead to chain reaction, leading to damage to the bridge structure

Method used

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  • Thin jack device for bridge lifting
  • Thin jack device for bridge lifting
  • Thin jack device for bridge lifting

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Embodiment Construction

[0025] see figure 1 and figure 2 As shown in FIG. 1 , they are the schematic diagram of the cross-sectional state of the first embodiment of the present invention and the schematic diagram of the use state of the first embodiment of the present invention. As shown in the figure: the present invention is a thin jack device for lifting a bridge, which is at least composed of a base 1 , a jacking unit 2 and a stroke displacement sensor 3 .

[0026] The above-mentioned base 1 is a hydraulic cylinder, and one side of the base 1 is communicated with a check valve 11, and one end of the base 1 is provided with an anti-shock unit ringed on the outer periphery of the jacking unit 2 12.

[0027] The jacking unit 2 is movably combined with the base 1, and the jacking unit 2 includes a limiting part 21 located in the base 1, and an anti-shock unit 12 provided on the end surface of the limiting part 21 and extending out of the base 1 The cylinder 22, wherein the limit portion 21 is als...

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Abstract

A thin jack device for bridge lifting is disclosed, comprising a base seat; a lifting unit, movably connected with the base seat; and a displacement sensor, disposed at a side of the base seat. In this manner, an arrangement may be applied when a gap altitude between a bridge girder and a pier is insufficient to reduce a risk possibility of violation of the bridge and pier, and a displacement sensors attached to stroke is used to monitor a raised altitude to reduce a mechanical error to promote safety and thereby sufficiently the current pier structure to save a temporarily used pier or a frame based design and construction, whereby increasing the construction safety and decreasing the construction cost.

Description

technical field [0001] The invention relates to a thin-type jack device for lifting bridges, especially a device that can be installed when the gap height between the bridge girder and the bridge pier is insufficient to reduce the risk of damage to the bridge and the bridge pier, and the stroke displacement sensor is used to monitor the jack. In order to reduce mechanical errors and improve safety, and then make full use of the existing structure of bridge piers, save the design and construction methods of temporary piers or use brackets, so as to increase construction safety and reduce construction costs. Background technique [0002] At present, most of the jacking construction methods for bridges are used on the outside of the abutment or pier column cap beam structure, and the bolt anchoring support bracket is used to establish a working platform for setting jacks. [0003] However, the construction safety of this construction method depends on the strength of the bolts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCB66F1/08B66F3/25
Inventor 廖庆隆赵鸣王仲宇马俊强
Owner CHINA ENG CONSULTANTS
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