Analysis Study On Feeding System Of All-hydraulic Power Head Type Drill Rig

Firstly the research background and the related knowledge are introduced in this paper, considering the question that the design of the feeding systems which are used in MK series all-hydraulic power head type drill rig is short of theoretic basis, the thesis mainly studies the scientific design theory of the feeding system, then puts forward a series of reasonable design methods. According to the asked function of the feeding system for all-hydraulic power head type drill rig, the characteristics of four kinds of hydraulic feeding mechanisms for this type of rig are studied, the rationality of MK series drill rig which use the four kinds of hydraulic feeding mechanisms are analyzed, then its advantages and faults are pointed, at last the relevant conclusions are put forward. In order to gaining the driving efficiency of the feeding mechanisms, at first we establish the typical dynamics model of the board, and get the friction that the rig consumed at the board by use of the theorial analysis method. Considering the actual circumstance of drill rigs, at the same time combining the influences of mechanical efficiency and oil return pressure, the maximal feeding force and drawing back force are calculated, also driving efficiency, then the main factors affecting driving efficiency are obtained. Making use of the rig general detecting laboratory to test the deferent maximal feeding force and drawing back force of drill rig, the validity of theoretic accounting value are analyzed in the paper. By means of the finite element analysis about two kinds of boards, the considered questions when we design the board are pointed, then the framework of the board are optimized simply. According to the analyzing results above, we put forward the standpoints to the rational design of the feeding system for all-hydraulic power head type drill rig, and they can provide reference for the design of this type of drill rig aftertime.