Abstract
The lightweight of hydraulic components and systems can improve the maneuverability, navigating ability and carrying capacity of mobile equipment. In this study, a self-expanding elastic pressurized reservoir (SEPR) is designed and manufactured. The SEPR is capable of compensating for the volume difference in the hydraulic system and providing pressure for the pump oil supply. Firstly, the structure of SEPR is designed to meet the compensation of the system volume difference. The housing of SEPR includes an interior tube made from an elastic rubber material and an outer woven fiber ensuring its strength and realizing oil pressurization. Then, the mathematical model of SEPR is established based on the characteristics of elastic material, the geometric relationship, and the force analysis. The relationship between the volume of oil, the degree of deformation, and the pressure can be obtained. Finally, a performance test bench is built to test the SEPR, and the step response test and sine response test of SEPR are carried out. The experimental results show that the reservoir responds quickly to the actuator action in the hydraulic system, with an average response time of 0.069 seconds. The SEPR has the advantages of small volume, lightweight. The configuration and modeling method of SEPR lay a foundation for the future lightweight design of the reservoir.
