When using the relevant empirical value and safety
factor to design the hydraulic system parameters of doubletriangular
drill boom, problems such as high system pressure, large pressure resistance
level of hydraulic components, serious system heating, high manufacturing and
maintenance cost, and high power consumption exist. To address these problems,
the structure of the doubletriangular drill arm is
theoretically analyzed, the extreme position of the doubletriangular load in the process of the drill arm movement is
calculated using the methods of motion trajectory projection and static
analysis, and the oil cylinder load parameters at the extreme position are
obtained. Then, a load sensitive hydraulic system is designed based on the
working principle of doubletriangle structure and the
working environment of boom. The principle of the system and the main parameters
of hydraulic components are determined through theoretical analysis and
calculation. The test results show that the load parameters of the hydraulic
system at the extreme position of motion are basically consistent with the
theoretical analysis parameters, the overall operation of the system is stable
and reliable, and the adjustment function of the servo cylinder is normal. The
temperature rise of the hydraulic system in the tunnel for 3 hours is 65.5 ℃, which validates the rationality and applicability of the design of
the hydraulic system.
XIN Shujie, ZHOU Yuanhang, LI Dawei, GUO Jingbo
. Design and Test of Hydraulic System of DoubleTriangular
Boom[J]. Tunnel Construction, 2023
, 43(S2)
: 587
-593
.
DOI: 10.3973/j.issn.2096-4498.2023.S2.064
