Cushion efficiency and stroke measuring equipment and the measuring method that use flow meter

The present invention, avoiding connection with the flow meter for measuring a flow rate of recovery toward the hydraulic tank 20 from the test cylinder, one end to the hydraulic return line to a method cushion performance and a stroke measuring device, and measurement using a flow meter installed in the return line and the other end be bifurcated split into a first hydraulic line and the second are connected to the hydraulic line, and blood test beam hits line from the cylinder to recover the oil pressure discharged by the first hydraulic line or a second hydraulic line to the hydraulic return line It is provided. Thus, the flow meter be installed in the beam hits the line to measure the flow rate of recovery toward the hydraulic tank 20 in the cylinder under test. Therefore, since the meter is installed in the beam hits the low pressure line to the operation compared with the hydraulic pressure supply line, as well as the high-pressure flow meter, so allowing the use of low-pressure flow meter and to prevent damage to the high-pressure flow meter according to extend the life of the meter. Further, the cushion testing and stroke oil level measurement for measuring the done at beam hits the line, it is not necessary to maintain a constant amount of oil for supplying the side under test cylinder from test equipment, thereby simplifying the test equipment It is possible. And the problem of the difference between the theoretical volume and the actual volume was generated during the measurement flow from the high-pressure lines are complementary.