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Control method of hydraulic jacking system of transporting girder vehicle

A control method and technology for transporting beam vehicles, which are applied in parallel bearing motion vehicles and other directions, can solve the problems of tilting box beams, box beams prone to distortion, and poor synchronization performance of hydraulic jacking cylinders.

Active Publication Date: 2014-03-26
徐州徐工能源装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a control method for the hydraulic jacking system of the beam transport vehicle, which solves the problem that the box girder is always supported by four points during the transportation process, and the box girder is prone to distortion; and the hydraulic jacking cylinder is synchronized during the lifting process. The performance is not good, and the problem of box girder tilting is prone to occur

Method used

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  • Control method of hydraulic jacking system of transporting girder vehicle
  • Control method of hydraulic jacking system of transporting girder vehicle
  • Control method of hydraulic jacking system of transporting girder vehicle

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Embodiment 1

[0014] Embodiment 1: The control method of the hydraulic jacking system: the operating handle gives instructions to control the lifting of the oil cylinder; the displacement sensor monitors the lifting height of each oil cylinder in real time, and transmits the data to the controller, and the controller will send the proportional control valve Issue instructions to automatically adjust the lifting speed of the oil cylinder to ensure that the box girder does not tilt during the lifting process. Solve the problem that the synchronization performance of the hydraulic jacking cylinder is not good during the lifting process, and the box girder is prone to tilt. After selecting the opening and closing state of the ball valve, the box girder is always in four-point action and three-point support during the transportation process, which solves the problem that the box girder is prone to distortion.

[0015] The operating handle gives lift instructions to the first proportional directi...

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Abstract

The invention belongs to hydraulic jacking systems, and relates to a hydraulic jacking system of a transporting girder vehicle, which comprises four hydraulic jacking cylinders loaded with displacement sensors, four electrical control proportioning valves, four ball valves, an operating handle, a controller and a warner, wherein the four hydraulic jacking cylinders are divided into two groups, that is, a front group and a rear group; rod chambers of the two hydraulic jacking cylinders in each group are connected by a hydraulic pipeline; one of the ball valves is arranged in the middle of the pipeline; likewise, rodless chambers of the two hydraulic jacking cylinders in the group are connected; when the four ball valves in the front group and the rear group are closed, the hydraulic jacking cylinders form four points for supporting a box girder; when the two ball valves in one group are closed, and the two ball valves in the other group are opened, the hydraulic jacking cylinders form four points acting on the box girder and three points for supporting the box girder so as to ensure that the box girder is not twisted during the lifting and transporting processes; during the process of the lifting of the box girder, the displacement sensors monitor the lifting heights of the cylinders in a real-time manner; and when the lifting speed of the some cylinder is too high, the controller gives out a command to the control valve to a proportional control valve to automatically adjust the lifting speed of the cylinders and further ensure that the box girder is not inclined during the process of lifting.

Description

technical field [0001] The invention relates to a control method of a hydraulic jacking system, in particular to a control method of a hydraulic jacking system of a beam transport vehicle. Background technique [0002] In the construction of high-speed railways in western my country, the box girder is often transported from the girder yard to the box girder erection site through a tunnel. The top surface interferes with the upper arch of the tunnel, so a hydraulic jacking system is now used to solve this problem. The specific method is: before the box girder is put on the beam transport vehicle, first adjust the jacking oil cylinder to a lower position, and then put the box girder on the jacking oil cylinder for transportation. When the box girder is transported to the construction site, the beam transport vehicle and frame After the bridge machine is docked, raise the jacking cylinder to a certain height, place the beam moving trolley at a proper position under the box gird...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60P1/02
Inventor 王增民高成国王伟牛勇
Owner 徐州徐工能源装备有限公司
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