Calculation and adjustment of screed plate camber size of paver

The synchronization problem of full hydraulic grader is studiedA plan of using synchronous flow dividing valve is proposedThe principle of synchronous flow dividing valve is presentedThe change of the synchronization performance and tractive effort brought by synchronous flow dividing valve is analyzedThe data for the tests is rep- resented with curves,and a conclusion is madeAll these can be taken as reference while solving similar synchro- nization problems

Experimental Study of Synchronous Flow Dividing Valve for Full Hydraulic Grader

In order to meet the requirements of the performance test of the screed, a hydraulic test bench for screed is designed, which realizes the action of the screed. On this basis, the test bench measurement and control software based on LabVIEW is developed, it completes the tests and data analysis of screed. The test results show that the system has perfect functions and meets the requirements of screed test.

Design and research of hydraulic screed test bench

In this paper, based on the servo valve controlled pressure cylinder, a scheme of hydraulic pipeline adjustable parameters water hammer wave test system is proposed. By changing the quality of pressure cylinder piston rod and controlling the opening of servo valve, the overshoot, pressure rise rate and oscillation of water hammer wave can be controlled. On this basis, based on AMESim simulation software, the paper studies the influence of different parameters of pressure cylinder and servo valve on water hammer wave, which provides the basis for the selection of main components. Finally, the experimental research is carried out on the designed system, and the results are consistent with the simulation results. The generated water hammer wave meets the requirements of the test standard, which proves that the hydraulic adjustable parameters water hammer test system developed in this paper is successful and feasible.

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An adjustable parameter water hammer wave hose testbench

This paper focuses on the related problems of the test accuracy, test efficiency and test automation of the no-load flow characteristics of the servo valve in the static test process and studies the key technology and test scheme of the test system. A measurement and control system based on LabVIEW software is designed, and a double closed-loop voltage stabilization control scheme of flow and pressure is proposed, which improves the test accuracy and efficiency.

Xiajie Jing

Papers

Design and research of hydraulic screed test bench

An adjustable parameter water hammer wave hose testbench

Static characteristic analysis of electrohydraulic servo valve based on LabVIEW