Large-scale structure weighing hydraulic control structure based on speed control

Abstract

The invention discloses a large-scale structure weighing hydraulic control structure based on speed control. The structure comprises four jacking units, wherein each jacking unit is installed on a bracket, a bracing wire displacement sensor is installed on each bracket, the bracing wire ends of the bracing wire displacement sensors are connected with a large-scale structure installed on the four jacking units, the four bracing wire displacement sensors are connected with a programmable logic controller and transmit the measured jacking and descending displacements of the jacking units to the programmable logic controller, the smallest jacking and descending displacement value output by one bracing wire displacement sensor serves as a reference value and is compared with the displacement values of the other three bracing wire displacement sensors by the programmable logic controller, and then a displacement control signal is output to the jacking units connected with the other three bracing wire displacement sensors so that the displacement values of the other three jacking units can be kept consistent with the displacement value of the reference jacking unit. The synchronous accuracy requirement can be met through the structure.

Description

technical field [0001] The invention relates to a hydraulic control structure, in particular to a hydraulic control structure for weighing large structures based on speed regulation control. Background technique [0002] The installation of offshore oil platforms is an important part of offshore engineering. The weight and center of gravity distribution of large structures are important control parameters for the offshore installation of structures. The accurate weight and center of gravity position play a decisive role in the selection of floating cranes and slings. Since the platform is supported by multiple points and is completely rigid structure, if the synchronous jacking control cannot be well realized during the weighing process, the rising height of each jack is different, the platform may be bent and deformed, and the platform structure will be seriously damaged. The tilt of the platform may also cause the platform to slip or even tip over, causing major economic l...

AI Technical Summary

Problems solved by technology

Since the platform is supported by multiple points and is completely rigid structure, if the synchronous jacking control cannot be well realized during the weighing process, the rising height of each jack is different, the platform may be bent and deformed, and the platform structure will be seriously damaged. The inclination of the platform may also cause the platform to slip or even tip over, causing major economic losses

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