JPS63144664U

JPS63144664U -

Info

Publication number: JPS63144664U
Application number: JP3621487U
Authority: JP
Priority date: 1987-03-12
Filing date: 1987-03-12
Publication date: 1988-09-22

Description

[Brief explanation of the drawing]

第１図は、この考案の原理説明図、第２図は、
本考案油圧実験装置の一実施例を示す回路図、第
３図は、ポンプ特性実験のプログラムを示すフロ
ーチヤート、第４図は、初期メニユーの１例を示
す図面、第５図は、ポンプの特性グラフを表す図
形を示した図面、第６図は、リリーフ弁特性実験
のプログラムを示すフローチヤート、第７図及び
第８図は、バランスピストン型リリーフ弁及び直
接作動型リリーフ弁の特性グラフを表す図形を示
した図面、第９図は、流量調整弁特性実験のプロ
グラムを示すフローチヤート、第１０図及び第１
１図は、スローリターン型流量調整弁及び圧力補
償付流量調整弁の特性グラフを表すグラフを示し
た図面、第１２図は、従来例を示す油圧回路図で
ある。１５……油圧ポンプ、１６……電動機、１８，
２３……圧力変換器、２５……直流タコジエネレ
ータ、２７……電力変換器、５７……流量センサ
、５９……マイクロコンピユータ、６４……ＣＲ
Ｔデイスプレー、６５……プリンター。 Figure 1 is a diagram explaining the principle of this invention, Figure 2 is:
FIG. 3 is a flowchart showing a program for a pump characteristic experiment, FIG. 4 is a diagram showing an example of an initial menu, and FIG. Figure 6 is a flowchart showing a program for a relief valve characteristic experiment; Figures 7 and 8 are characteristic graphs of a balanced piston type relief valve and a direct actuation type relief valve. FIG. 9 is a flowchart showing a program for a flow rate adjustment valve characteristic experiment, and FIG. 10 and FIG.
FIG. 1 is a graph showing characteristic graphs of a slow return type flow regulating valve and a flow regulating valve with pressure compensation, and FIG. 12 is a hydraulic circuit diagram showing a conventional example. 15...Hydraulic pump, 16...Electric motor, 18,
23...Pressure transducer, 25...DC tachometer generator, 27...Power converter, 57...Flow rate sensor, 59...Microcomputer, 64...CR
T-day display, 65... printer.

Claims

[Scope of utility model registration request]

A source pressure detection means for detecting the hydraulic pressure supplied to the hydraulic circuit by a hydraulic pump driven by the prime mover, a sensor group for similarly measuring the flow rate etc. flowing through the hydraulic circuit, and the source pressure detection means A source pressure target value setting means for setting the source pressure target value detected by the source pressure target value setting means, and a source pressure target value set by the source pressure target value setting means and detected by the source pressure detecting means. a comparison means for comparing the detected source pressure value detected by the source pressure detection means and the sensor group when the detected source pressure value matches the target source pressure value; A detected value reading means for reading the detected value, a detected value storage means for storing the detected value inputted from the detected value reading means, and the above-mentioned based on the detected value stored in the detected value storage means. a calculation means for calculating characteristic values such as volumetric efficiency of the hydraulic pump; and a display for displaying the characteristic values calculated by the calculation means and the detected values stored in the detected value storage means. 1. A hydraulic experimental device comprising: means.