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Full-automatic control method of bridge rotation construction

A swivel and bridge technology, which is applied in the field of automatic control of bridge swivel construction, can solve problems such as speed mismatch of adjustment actions, lag in response of swivel bridges, deterioration of overturning safety situation, etc., to achieve the effect of ensuring stability

Active Publication Date: 2017-05-31
中电建路桥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at providing a bridge swivel structure with many self-weights and high requirements on the foundation bearing capacity, and the propulsion speed of the jack is largely based on on-site observation and operator experience, which has certain uncertainties. The construction automatic control method solves the problems of lagging response of the swivel bridge, speed mismatch of data collection, processing and adjustment actions, prone to overturning and rapid deterioration of the safety situation

Method used

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  • Full-automatic control method of bridge rotation construction

Examples

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Effect test

Embodiment 1

[0030] A method for fully automatic control of bridge swivel construction, comprising the following steps: (1), obtaining the real-time data of the rotation of the swivel bridge, the real-time data of rotation comprising: instant distance data, final distance data, instant angle data β, final angle data Ο , original angle data α, wherein β=α-O; instant distance data, the distance between the instant position of the swivel bridge and the target position; the final distance is the distance between the target position and the measurement position of the swivel bridge; the instant angle is The angle between the instant position of the swivel bridge and the target position; the final angle is the angle between the target position of the swivel bridge and the measured position; the original angle is the angle between the initial position of the swivel bridge and the measured position;

[0031] (2), the rotation real-time data real-time signal that step (1) obtains is carried out real...

Embodiment 2

[0040] In order to enable the bridge to rotate accurately and smoothly, it is necessary to carry out early warning judgment before the rotation operation command is issued. The purpose of early warning judgment is to timely warn and trigger the corresponding signal when the data reaches the threshold, so as to ensure safety. swivel and precise fit.

[0041] The early warning determination step is located between step (1) and step (2), and the real-time rotation data also includes lateral inclination angle data and longitudinal inclination angle data of a position on the swivel bridge and the next position of the swivel bridge, and the early warning determination is Comparing the horizontal inclination angle data and the longitudinal inclination angle data of the upper position of the swivel bridge and the next position of the swivel bridge with a threshold value, the threshold is based on the critical condition that the resultant force of gravity of the swivel bridge does not e...

Embodiment 3

[0043] Such as figure 2 As shown, a bridge swivel control system suitable for the aforementioned, including data acquisition and equipment control PLC, computer, oil pump control unit, wireless transmission device, GPS positioning device, laser ranging wireless transmission device, total station; data acquisition And equipment control PLC is connected with other components to complete data acquisition and calculation, logic operation, data upload and send control commands to other components to realize the control of other components; the computer uses wireless transmission devices and GPS positioning devices, laser ranging The wireless transmission device and the total station are connected to obtain and record the real-time data of the swivel bridge; the oil pump control part is connected to the jack, and the oil pump control part includes solenoid valves, frequency converters and pressure transmitters, and the solenoid valves are used for remote To control the operation of...

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Abstract

The invention discloses a full-automatic control method of bridge rotation construction, comprising the steps of (1) acquiring a rotation real-time data signal of a swivel bridge, wherein the rotation real-time data includes real-time distance data, final distance data, real-time angle data Beta, final angle data o, original angle data Alpha, with Beta=Alpha-o; (2) subjecting the rotation data real-time signal of step (1) to real-time comparison processing; (3) issuing a command to a jack according to the real-time comparison results so that the jack drives a bridge to rotate, finishing full-automatic control of bridge rotation construction. Dynamic data can be collected in time so that data acquisition and processing match with adjustment speed during rotation of the bridge, and emergent problems occurring in the rotation of the bridge can be found and handled in time.

Description

technical field [0001] The invention relates to the field of bridge swivel construction, in particular to a fully automatic control method for bridge swivel construction. Background technique [0002] There are five technical difficulties in bridge swivel construction: first, since the gravity, center of gravity and pier height, once the rotation axis deviates from the vertical line, the overturning moment caused by gravity will appear immediately, which is extremely dangerous. Manufacturing precision, lubrication uniformity, and sensitivity of the stress sensing system are high, and generally require a large guide rail radius; second, the frictional resistance changes greatly during the rotation of a large-width bridge, which makes it difficult to accurately control the rotation speed, and even pulse-like When moving forward, it is easy to exceed the set angle; third, when the bridge width is large, the horizontality of the bottom surface after rotation is high. exceeds a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/08
CPCE01D21/08
Inventor 马福民陈钒陈正林孙军柱舒万华高伟程广杰罗琦
Owner 中电建路桥集团有限公司
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