A study on properties of oil hydraulic multiple function cylinder

油压多功能油缸性能研究

基本信息

批准号：
03452237
负责人：
TAKAHASHI Yoshio
金额：
$ 4.35万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452237/
关键词：
Oil hydraulic cylinder Proportional solenoid valve Vibration cutting Mining machine Civil and construction machine Multiple function Robotized machine Computer control 油圧制御弁コンピュータ多機能化振動制御負荷可変装置コンピュ-タ

项目摘要

Recently, the oil hydraulic controlled system has been applied to the field of mining industry, civil engineering and construction industly. The robotized mechines have been required to improve labor-saving, safety and production in mining and construction works.The aim of this study is to design the oil hydraulic multiple function cylinder which corresponds to a part of the robotized machines.A vibration technique s employed to the oil hydraulic cylinder, which has multiple function. An apparatus of the experiment is an oil hydraulic controlled system with the two single-rod cylinders, proportional solenoid valve and high speed on-off solenoid valve.First, the system is identified by mean of an expanded least square method. Next, the experiment is made with variation of the supply pressure and the frequency and the bias voltage under some levels of the constant load. As a results, the quantitative fundamental properties, namely, the vibration amplitude, the feed speed, the frequency, the maximum pushing force and the acceleration, were obtained.Furtheremore, to investigate cutting effect of the oil hydraulic multiple function cylinder, the experimental model of the system was assumed as an actual hydraulic excavator, and the quantitative properties of the multiple function cylinder with vibration were compared with these of no-vibration cylinder. It was obtained that the effect of the oil hydraulic multiple function cylinder corresponds to the quantitative properties of the excavator.Final, the experiments of the oil hydraulic shovel with the oil hydraulic multiple function cylinder were carried out on the actual field. It was confirmed that oil hydraulic multiple function cylinder has the effective cutting force which corresponds to the shovel with a operator.

近年来，油压控制系统已应用于采矿业、土木工程和建筑业等领域。采矿和建筑工程需要机器人机械来提高劳动力的节省、安全性和生产。本研究的目的是设计与机器人机械的一部分相对应的油压多功能油缸。采用了振动技术为油压缸，具有多种功能。实验装置为由两个单杆油缸、比例电磁阀和高速开关电磁阀构成的油压控制系统。首先，采用扩展最小二乘法对系统进行辨识。接下来，在一定水平的恒定负载下，改变电源压力、频率和偏置电压进行实验。得到了定量的基本特性，即振动幅值、进给速度、频率、最大推力和加速度。此外，为了研究油压多功能缸的切削效果，建立了实验模型。将该系统假设为一台实际的液压挖掘机，并将带振动的多功能油缸的定量特性与无振动油缸的定量特性进行了比较。得出油压多功能油缸的作用效果与挖掘机的定量特性相对应。最后,对采用油压多功能油缸的油压挖掘机进行了现场试验。经证实，油压多功能油缸具有与操作员铲刀相当的有效切削力。