夜夜狠狠擅视频 I 夜夜欢天天干 I 夜夜精品视频 I 夜夜久久 I 夜夜看av I 夜夜撸 I 夜夜骑夜夜操 I 夜夜骚av I 夜夜骚av一区二区三区 I 夜夜视频 I 夜夜爽av I 夜夜爽妓女8888视频免费观看 I 夜夜爽爽 I 夜夜爽天天干 I 夜夜夜操 I 夜夜夜夜操 I 夜夜躁狠狠躁日日躁 I 夜夜躁狠狠躁日日躁av I 夜夜综合 I 一本不卡 I 一本大道东京热无码 I 一本大道久久久久精品嫩草 I 一本到 I 一本到av I 一本高清dvd在线播放 I 一本加勒比hezyo黑人 I 一本加勒比北条麻妃 I 一本加勒比波多野结衣

Introduction of Hydraulic Control System of Hydraulic Universal Testing Machine

Hydraulic Control System of Hydraulic Universal Test Machine Introduces Maintenance: The test machine should be installed in a clean and dry room with uniform temperature, and the possibility of long beam bending test on the machine and the possibility of using mirror extensometer for test should be taken into account. Therefore, sufficient free area should be left around the test machine. The main body of the testing machine and the dynamometer do not need special foundation when they are installed. The general foundation is made according to the foundation map and the screw holes of the foot are set aside for pouring. To find the main body level of the testing machine, the level can be located on the outer circle of the cylinder according to the vertical and horizontal position of the seat and the horizontal direction. The level can be found by the level meter with accuracy of 0.10/1000mm (+1 grid). When uneven, it can be adjusted by adding a pad iron under the base. What is a hydraulic transmission system? High quality medium viscosity mineral oil should be used in hydraulic transmission. Oil should not contain water, acid and other mixtures. It should not be decomposed or thickened at ordinary temperature. The oil must be filtered before it is poured into the machine. Due to the improper use of oil, the valve and oil pipeline will be blocked and the machine may produce vibration, which will affect the normal operation of the test machine. Reference Specification of Oil: Specificity: 0.86-0.97 Solidification Point: -15 to-20 C. Domestic No. 30-50 Oil can also be used according to actual conditions.

如何操作：開始使用試驗(yàn)機(jī)之前，必須將從油箱到油泵管路中間裝設(shè)的活栓打開， 活栓的刻線與管子成一直線時(shí)，表示油箱與油泵之間的油路暢通，如刻線與管子 成正交時(shí)，則表示關(guān)閉。 放油時(shí)打開測(cè)力計(jì)左側(cè)底部之油嘴即可，關(guān)于油的使用期限根據(jù)各地氣候而決定， 如發(fā)現(xiàn)油開始混穢不能用時(shí)應(yīng)換新油，欲擦試油箱底部或東西掉入取出時(shí)先放凈油， 卸下測(cè)力計(jì)左下方的圓蓋即可，完后須上好。