摘要：Static and dynamic loads impact on a powered roof support
during its operation. The dynamic loads lead to a number of consequences
for the construction and the entire hydraulic system. With the increase of
depth and intensity of exploitation, the number of events during which the
dynamic load is greater increases. Therefore, it is necessary to research the
whole unit of the support and its components under the impact of dynamic
load. The article presents the results of tests of a hydraulic leg designed to
work in the powered support and dynamically loaded with free fall drop.
An innovative hydraulic system type DOH was mounted in the subject leg.
As a result of the conducted tests, the dynamic parameters of the tested
system were determined. The aim of the research was also to determine the
impact of drop’s energy on the operating parameters of the tested system.
The tested hydraulic system is a part of an innovative electro hydraulic
control system of the powered roof support. The Authors believe that the
obtained results will allow to create opportunities for the practical
application of the tested system and the entire wireless control system of
the mining roof support.
其他摘要：Static and dynamic loads impact on a powered roof support during its operation. The dynamic loads lead to a number of consequences for the construction and the entire hydraulic system. With the increase of depth and intensity of exploitation, the number of events during which the dynamic load is greater increases. Therefore, it is necessary to research the whole unit of the support and its components under the impact of dynamic load. The article presents the results of tests of a hydraulic leg designed to work in the powered support and dynamically loaded with free fall drop. An innovative hydraulic system type DOH was mounted in the subject leg. As a result of the conducted tests, the dynamic parameters of the tested system were determined. The aim of the research was also to determine the impact of drop’s energy on the operating parameters of the tested system. The tested hydraulic system is a part of an innovative electro hydraulic control system of the powered roof support. The Authors believe that the obtained results will allow to create opportunities for the practical application of the tested system and the entire wireless control system of the mining roof support.
