Identification of dynamic load of the hydraulic leg
Szyguła M., Mazurek K., Madejczyk W.

S u m m a r y
At present, laboratory testing of the hydraulic legs is carried out due to the requirements of the PN-EN 1804-2 Standard. Only one load parameter is recorded during testing irrespectively to the method used – a pressure in an under-piston area at the typical leg terminal. Time process and results of dynamic testing carried out on an explosive stand with few pressure measuring points were given. Hydraulic leg of the powered roof support equipped with additional terminals and measuring channels was the testing object. The employed testing method enabled to study, in a better way, a behaviour of the hydraulic fluid during leg loading as well as to identify dynamic loads in a result of computer model calculations.