A hydraulic experiment integrated testing device and testing method

Abstract

The invention relates to a hydraulic test integration testing device and a testing method. A manifold block and a servo cylinder are included, and a proportional directional valve, a servo valve, a dynamic cylinder and cartridge valves are integrated to the manifold block; a first cavity of the servo cylinder is connected with a first oil port of the proportional directional valve and a first oil port of the servo valve through the cartridge valvecorresponding cartridge valve, and a second cavity is connected with a second oil port of the proportional directional valve and a second oil port of the servo valve through the cartridge valvecorresponding cartridge valve; a third cavity of the dynamic cylinder is connected with the first oil port of the proportional directional valve and the first oil port of the servo valve through the cartridge valvecorresponding cartridge valve, and a fourth cavity is connected with the second oil port of the proportional directional valve and the second oil port of the servo valve through the cartridge valvecorresponding cartridge valve; a third oil port of the proportional directional valve is connected with a fourth oil port of the servo valve through the cartridge valvecorresponding cartridge valve, and a fourth oil port of the proportional directional valve is connected with a third oil port of the servo valve; and the first oil port and the second oil port of the proportional directional valve are connected through the cartridge valvecorresponding cartridge valve, and the cartridge valve is further connected with the first oil port and the second oil port of the servo valve are also connected through the cartridge valve.

Description

technical field [0001] The invention relates to the field of hydraulic testing equipment, in particular to a hydraulic experiment integrated testing device and testing method. Background technique [0002] In order to achieve the multi-purpose effect of the existing hydraulic test bench, a set of experimental equipment needs to conduct experiments on two or more tested valves. Such as figure 1 , figure 2 As shown, the experimental device can carry out dynamic and static experiments on servo valves and proportional reversing valves. The device includes a servo cylinder 2 fixed on a support 1, the servo cylinder 2 is connected with an oil circuit block 4 through an oil circuit plate 3, and two electromagnetic reversing valves 5 are arranged on the oil circuit block 4. When it is necessary to detect the proportional reversing valve, such as figure 1 As shown, the proportional reversing valve 6 is connected to the oil block 4 through the oil circuit plate 7; when the servo ...

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Problems solved by technology

[0003] However, since the interface sizes of different types of valves are different, they need to be connected through corresponding oil circuit boards when they are installed on the oil circuit block 4, which increases the manufacturing cost. work efficiency

At the same time, the servo valve 9 has relatively high oil cleanliness. If impurities enter the experimental pipeline, it may cause the servo valve 9 to be blocked. Chips and residues fall to the oil inlet and outlet of the dismantled valve, causing impurities to enter the test pipeline and cause valve blockage

[0004] On the other hand, the electromagnetic reversing valve is used to switch and change the flow direction of hydraulic oil, and its sealing effect is not good

The electromagnetic reversing valve adopts the structure of the sliding spool to seal or change the flow direction of the oil. Because the spool must slide in the valve body, there must be a certain gap between the spool and the valve body. If there is a gap, it will cause internal leakage, which will have an effect on the test parameters

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