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. Wet multidisc brakes and fully hydraulic braking system The wet disc service and parking brakes are fully sealed and adjustmentfree to reduce contamination, wear and maintenance. Added reliability is designed into the braking system by the use of two independent hydraulic circuits providing hydraulic backup should one of the circuits fail. If the brake oil pressure drops, a warning lamp flashes and an alarm sounds intermittently. If the brake pressure continues to drop, the parking brake is automatically applied providing a double safety system.5. HighRigidity Frames The front and rear frames along with the loader linkage have high rigidity to withstand repeated twisting and bending loads to the loader body and linkage. Both the upper and lower center pivot bearings use tapered roller bearings for increased durability. G W, Wang K W. Enhanced control performance of a piezo electrichydraulic pump actuator for automotive transmission shift control. Proc Inst Mech Eng Part DJ Automob Eng, 2010, 224(2): 161174 2Yang H Y, Zhang B, Xu B. Development of axial piston pump/motor technology. Chin J Mech Eng, 2008, 44(10): 18 Y S, Wu D F, Long L, et al. Research on the port valve of a water hydraulic axial pump. Proc Inst Mech Eng Part EJ Process Mech Eng, 2009, 223(3): 155166 4. Kim J H, Ahn H J, Kim K Y. Highefficiency design of a mixedflow pump. Sci China Tech Sci, 2010, 53(1): 2427 T J. New Compilation of Hydraulic Engineering Manual. Beijing: Beijing Institute of Technology Press, 1998. 313318 Y X. Technical Handbook for Hydraulics and Pneumatics. Beijing: China Machine Press, 2002. 470572 D S, Gao J, Wang Z L, et al. Output torque of doubleacting multipump and multimotor. China Mech Eng, 2010, 21(23): 28362838 裝載機(jī)概述基本概念 裝載機(jī)是一種主要用于向另一種機(jī)械(自卸車、輸送皮帶、鐵路運(yùn)輸車輛等)“裝載”物料的建設(shè)機(jī)械(工程車輛)設(shè)備。 each direction。LoadersOverviewBasic Concept .A loader is a type of construction equipment (engineering vehicle) machinery that is primarily used to load material into another type of machinery (dump truck, conveyor belt, railcar, etc.).Loaders are used mainly for uploading materials into trucks, laying pipe, clearing rubble, and digging. A loader is not the most efficient machine for digging as it cannot dig very deep below the level of its wheels, like a backhoe can. Their deep bucket can usually store about 3