吉林大学学报(工学版)

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Thermal balance of hydraulic system of a 50 type wheel loader

WANG Jian-peng，QIN Si-cheng ，ZHAO Ke-li   

  1. College of Mechanical Science and Engineering，Jilin University，Changchun 130022,China
  • Received:2007-10-18 Revised:2007-12-21 Online:2009-05-01 Published:2009-05-01

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Abstract:

Pressures and temperatures in the hydraulic system of the 50 type wheel loader were measured under different operating conditions to solve the overheating problem of the loader working in summer. Through the analysis of the experimental data it was found that the system overheating results from the wrong location of the hydraulic oil cooler, and the hydraulie oil flow rate through the cooler is insufficient to provide a dissipating power of the cooler required by the hydraulic system. Tests of the loader after the rearrangement of the oil cooler in the return circuit showed that the dissipating power of the relocated cooler conforms to the design target, and the total system operates normally.

Key words: turn and control of fluid, loader, power loss, thermal balance, hydraulic system

CLC Number: 

  • TH137.9
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