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Title Test Bench for The Volume Efficiency of CBN-F300 Gear Pump _¡ª¡ªThe Mechanical Structure and Hydraulic System Design

Abstract As the dunamic components of the hydraulic system,hydraulic pump is the heart of the system,its performance directlu affects the performance of the hydraulic system.The performance test before the delivery not only can identify the product quality,but also improve the product structure design,improve the level of technology and upgrade the products. The projection designed a volume efficiency test bench for CBN-F300 duplex gear pump .In the condition of the given outside world ,we measure the actual displacement and compare it with the theory displacement.Then,the income ratio is the columtic efficiency of the gear pump. According to the description of the graduated-design plan,this projection mainly completed the design of hydraulic system for testing the volumetic efficiency,the test bench and tank,piping layout,selectionof auxiliary hydraulic parts,and the gear pump fixture design. Keywords CBN-F300 gear pump,volumetric efficiency,test bench, hydraulic system,fixture

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