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Research Papers: Design and Analysis

Design and Research on the New Type Water Hydraulic Axis Piston Pump

[+] Author and Article Information
Zhang Zuti

School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan, Hubei 430074, China
e-mail: afanti_2012@hotmail.com

Cao Shuping

Associate Professor
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan, Hubei 430074, China
e-mail: shupingcao@163.com

Luo Xiaohui

School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan, Hubei 430074, China
e-mail: luoxiaohui0188@163.com

Zhu Yuquan

Professor
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan, Hubei 430074, China
e-mail: zhuyq@hust.edu.cn

Shi Weijie

School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan, Hubei 430074, China
e-mail: swajie123@163.com

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received May 2, 2015; final manuscript received January 13, 2016; published online February 24, 2016. Assoc. Editor: Allen C. Smith.

J. Pressure Vessel Technol 138(3), 031203 (Feb 24, 2016) (8 pages) Paper No: PVT-15-1083; doi: 10.1115/1.4032577 History: Received May 02, 2015; Revised January 13, 2016

Water hydraulic technology is developing rapidly at present. The water hydraulic piston pump has become a key component in the field of water hydraulic technology. The paper describes the invention of a new mechanism which translates rotational movement into linear motion for application in a water hydraulic piston pump. The kinematic and dynamitic models of the mechanism were built and simulation was accomplished based on the mathematic models. Simulation results were analyzed and compared with a traditional swashplate slipper pump. Comparison results indicated that this mechanism could reduce the number of tribology pairs and reaction force between piston and cylinder block. The lateral force was only 1/18 of that for a swashplate slipper piston pump. The value of product between pressure and velocity (PV value) for the piston was small, resulting in a great reduction in friction and wear for the piston–cylinder couples. The new pump was tested in a flow test apparatus. The experimental results showed that the pump achieved a volumetric efficiency of up to 92% at the required flow rate and operating pressure. The pump was found to have steady and excellent operating characteristics. This research contributes to the overall development of water hydraulic technology.

Copyright © 2016 by ASME
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References

Figures

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Fig. 1

Pump configuration

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Fig. 2

Swashplate—crankshaft diagram

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Fig. 3

Piston–connect rod and piston free body diagram

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Fig. 8

Theory flow of pump

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Fig. 14

PV value of crankshaft pump pistons

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Fig. 15

PV value of swashplate pump pistons

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Fig. 16

Diagram of text tag

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Fig. 17

Measured flow of crankshaft pump

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Fig. 18

Measured flow of crankshaft pump

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Fig. 19

Volumetric efficiency of crankshaft pump

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Fig. 13

Lateral force of swashplate pump piston

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Fig. 12

Force angle of crankshaft pump pistons

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Fig. 11

Lateral force of crankshaft pump pistons

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Fig. 10

Flow of crankshaft pump

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Fig. 9

Pressure of crankshaft pump

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Fig. 7

Accelerations of multiple pistons

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Fig. 6

Velocities of multiple pistons

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Fig. 5

Zooms out of displacements of multiple pistons

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Fig. 4

Displacements of multiple pistons

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