In order to solve problems associated with high heat production,high-energy consumption and low efficiency for the hydraulic system of the working device in a wrecker truck,a hydraulic energysaving system based on com...In order to solve problems associated with high heat production,high-energy consumption and low efficiency for the hydraulic system of the working device in a wrecker truck,a hydraulic energysaving system based on common pressure rail( CPR) is proposed. A hydraulic transformer is utilized to control the actuators by analyzing energy-consumption characteristics of valve controlled hydraulic system in a wrecker truck. By analyzing the energy-saving principle of a hydraulic energy-saving system,a relevant mathematical model is established. A comparison is performed between the energysaving hydraulic system and valve controlled hydraulic system in a wrecker truck within the same work period for operating efficiency and energy consumption. Results show that hydraulic energysaving system of the wrecker truck has better controlling performance and efficiency of about 18%higher than the valve controlled hydraulic system. Energy-saving ratio for total energy consumption in this system reaches 51. 46%,demonstrating energy-saving effect of the system.展开更多
According to the present situation that the current road wrecker with a large occupied volume is mainlytowed by truck and cannot be applied to car clearing on the congested or narrow road, based on the structure ofexi...According to the present situation that the current road wrecker with a large occupied volume is mainlytowed by truck and cannot be applied to car clearing on the congested or narrow road, based on the structure ofexisting electric pallet truck, a small sized road wrecker is designed, which has some advantages such as smallvolume, convenient to use and flexible operation. The main structure, hydraulic system and working principle aredesigned and illustrated in this paper. The optimization design of mechanism multi-objective function for scissorslifting device is carried out by using MATLAB optimization toolbox, and installation position parameters of hydrau-lic cylinder is optimized by using optimization design concept, which decreases the maximum output force of hy-draulic cylinder and reduces the energy consumption of hydraulic system, and provides a reliable basis for the im-provement design of this kind of small sized road wrecker.展开更多
基金Supported by the National Natural Science Foundation of China(No.51505289)Scientific Research Projects of Army(No.2014ZJ16,QT0703)
文摘In order to solve problems associated with high heat production,high-energy consumption and low efficiency for the hydraulic system of the working device in a wrecker truck,a hydraulic energysaving system based on common pressure rail( CPR) is proposed. A hydraulic transformer is utilized to control the actuators by analyzing energy-consumption characteristics of valve controlled hydraulic system in a wrecker truck. By analyzing the energy-saving principle of a hydraulic energy-saving system,a relevant mathematical model is established. A comparison is performed between the energysaving hydraulic system and valve controlled hydraulic system in a wrecker truck within the same work period for operating efficiency and energy consumption. Results show that hydraulic energysaving system of the wrecker truck has better controlling performance and efficiency of about 18%higher than the valve controlled hydraulic system. Energy-saving ratio for total energy consumption in this system reaches 51. 46%,demonstrating energy-saving effect of the system.
文摘According to the present situation that the current road wrecker with a large occupied volume is mainlytowed by truck and cannot be applied to car clearing on the congested or narrow road, based on the structure ofexisting electric pallet truck, a small sized road wrecker is designed, which has some advantages such as smallvolume, convenient to use and flexible operation. The main structure, hydraulic system and working principle aredesigned and illustrated in this paper. The optimization design of mechanism multi-objective function for scissorslifting device is carried out by using MATLAB optimization toolbox, and installation position parameters of hydrau-lic cylinder is optimized by using optimization design concept, which decreases the maximum output force of hy-draulic cylinder and reduces the energy consumption of hydraulic system, and provides a reliable basis for the im-provement design of this kind of small sized road wrecker.
