Design of Energy-Absorbing and Impact-Proof Unit Type Advanced Hydraulic Support
In the design of the existing unit advanced hydraulic support,the anti-impact function is not considered.When the sudden rock burst in the coal mine and the impact load reaches the maximum bearing capacity of the unit leading hydraulic support,the unit leading hydraulic support can not resist the sudden strong impact load.Due to the lack of dynamic response time,the pressure relief safety valve can not be opened in time,resulting in bending,fracture and cylinder burst of the column jack of the unit leading hydraulic support,which seriously affects the normal support of the roadway.In order to solve these problems,a new type of advanced hydraulic support with retractable energy absorption unit is designed.The external transportation mode of monorail crane is adopted,which takes into account the function of energy absorption and anti-impact without reducing the bearing capacity,which is convenient to realize the function of reciprocating support roadway.
hydraulic supportrock burstretractableenergy absorption to prevent impact
NETL
NSTL
万方数据
