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Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion

A conversion system and cable force technology, which is applied in the field of cable force conversion of temporary hoisting devices, can solve the problems of no measuring device for jack displacement, influence on operation quality, and low construction efficiency, and achieve convenient standardized construction, high synchronization control accuracy, and manual The effect of low cost input

Inactive Publication Date: 2017-05-10
LIUZHOU OVM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the single set of temporary hoisting devices used for boom replacement are equipped with four jacks to add and unload the temporary cables. The cable force conversion method is mostly realized by manual operation of electric oil pumps and diverter valves to make multiple jacks move synchronously. The disadvantage is that the jacks There is no measuring device for displacement, and manual measurement is required with a ruler; the pressure reading of the oil pump is a mechanical oil pressure gauge, which requires manual reading; the flow rate and direction of hydraulic oil are controlled by manual operation of the oil inlet valve and oil outlet valve; There is no communication between multiple oil pumps, manual on-site monitoring is required, and the coordination of the general command is realized through walkie-talkie communication, and the accuracy of synchronization between multiple pumps is low
In addition, there are many operators involved, and the operation process is affected by the quality of the personnel. When the jacks are not synchronized, the oil pressure and oil speed of the jacks need to be adjusted separately. The construction efficiency is low, and it is difficult to realize the cable force conversion of the fast temporary hoisting device.

Method used

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  • Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion
  • Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion

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Experimental program
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Effect test

Embodiment 1

[0030] A synchronous hydroelectric control cable force conversion system for boom replacement, such as figure 1 As shown, the synchronous hydraulic-electric control cable force conversion system includes a centralized control computer 1, a main control box 3, and 4 sets of hydraulic pump station systems A1, A2, A3, and A4 for cable force conversion of temporary hoisting devices;

[0031] Each set of temporary hoisting device is configured with a set of hydraulic pump station system; each set of hydraulic pump station system used for cable-force conversion of temporary hoisting device includes a group of hydraulic pump station 5 and four jacks 61, 62, 63, 64, the hydraulic The pump station 5 independently controls the action, pressure and displacement of the four jacks; each jack is provided with a displacement sensor 7 and a pressure sensor 8; the displacement sensor 7 is installed on the side of each jack, and one end of the displacement sensor 7 (i.e. the lower end ) is fixe...

Embodiment 2

[0038] A method for converting the cable force of a temporary hoisting device, which uses the synchronous hydraulic-electric control cable force conversion system for boom replacement described in Embodiment 1 to realize the automatic hydraulic-electric control cable force loading and unloading of the temporary hoisting device to complete the cable force loading and unloading. The method of force conversion, that is: first use the system to use the centralized control computer 1 to control the switching valves of the hydraulic pump station 5 of each set of temporary hoisting devices through the PLC programming algorithm to synchronously control the pressure and displacement of each jack, and alternately complete the temporary lifting. The graded loading of the hanging device and the graded unloading of the old suspenders are used to realize the first conversion of the cable force, and then the old suspenders are removed and the new suspenders are installed. Finally, the system use...

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PUM

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Abstract

The invention provides a synchronous hydro-electric control cable force conversion system for suspender replacement. The system comprises a centralized control computer, a main control box, and multiple hydraulic pump station systems for temporary bottom-carrying lifting device cable force conversion. Each hydraulic pump station system for temporary bottom-carrying lifting device cable force conversion comprises a set of hydraulic pump stations and four jacks. A displacement sensor and a pressure sensor are installed on each jack. The four jacks are installed on a temporary bottom-carrying lifting device, and the jacks are connected with corresponding switching valves on the hydraulic pump stations through oil inflow oil pipes and oil return oil pipes respectively. The displacement sensors and the pressure sensors are in circuit connection with the main control box. The main control box is in circuit connection with each hydraulic pump station. The centralized control computer is connected with the main control box. The system can achieve automatic hydro-electric control cable force loading and unloading of the temporary bottom-carrying lifting device to complete the cable force conversion process, the automation degree is high, the synchronous control precision is high, the work efficiency is high, safety and reliability are achieved, and standardized construction is convenient.

Description

technical field [0001] The invention relates to a bridge construction machine and a construction method thereof, in particular to a synchronous hydraulic-electric control cable force conversion system for suspender replacement and a cable force conversion method for a temporary hoisting device. Background technique [0002] At present, most of the single set of temporary hoisting devices used for boom replacement are equipped with four jacks to add and unload the temporary cables. The cable force conversion method is mostly realized by manual operation of electric oil pumps and diverter valves to make multiple jacks move synchronously. The disadvantage is that the jacks There is no measuring device for displacement, and manual measurement is required with a ruler; the pressure reading of the oil pump is a mechanical oil pressure gauge, which requires manual reading; the flow rate and direction of hydraulic oil are controlled by manual operation of the oil inlet valve and oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D22/00
CPCE01D21/00E01D22/00
Inventor 窦勇芝莫德荣韦福堂李东平孙长军黎祖金
Owner LIUZHOU OVM ENG
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