Foton 917 Loader

  • Low-Frequency Vibration Testing of Huge Bucket Wheel

    Dec 02, 2018 · The low-frequency vibration of the bucket wheel excavator has an important impact on the fatigue life of the structures. For conventional vibration testing methods, it is difficult and expensive to excite the overall low-frequency vibration of the whole machine. Hence, in this paper, the excitation method that uses the belt-supporting rollers on the boom as an exciter is tried to excite the

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  • RESEARCH ON LOAD SPECTRUM OF AERO HYDRAULIC …

    hydraulic pump, and compile accelerated test load spectrum based on the theory and method Russian OCT1 criteria recommended. 2 Scheme of Accelerated Degradation Testing 2.1 Introduction of aviation hydraulic pump Research object in this test is a type of constant-pressure and variable-flow aviation piston pump with 9 pistons.

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  • Power control strategy and performance evaluation of a

    Jan 01, 2019 · This paper proposes a novel electro-hydraulic energy-saving system to integrate recovery and regeneration devices. The working conditions of excavators and system configuration of the proposed system are analyzed. and the experimental device and test method are discussed in Section 4. and P load is the load demand power of the hydraulic

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  • - chd.edu.cn

    Load Spectrum Test Method of Hydraulic Excavator Working Device: XIANG Qing-yi 1, LU Peng-min 1, WANG Bin-hua 1, ZHANG Hong 2, XUE Lu 2: 1. Key Laboratory of Highway Construction Technology and Equipment of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2.

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  • MTS Systems Home

    MTS provides testing systems, mechanical testing systems, simulation systems and sensing solutions to researchers, developers and manufacturers worldwide.

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  • Proceedings of the JFPS International Symposium on Fluid

    The valve consists of a vibration motor and a check valve that made of a steel ball and an orifice in flexible tube. The operating principle of the valve is as follows. The valve is normally closed as a function of check valve. When the vibration is applied, the inner ball in the check valve moves and the valve opens.

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  • Identification of cross-section loads for steel beam with

    Dec 28, 2020 · Up to12%cash back · Q. Y. Xiang et al., Load spectrum test method of excavator working device, China J. of Highway and Transport, 30(9), (2017) 151–158. Google Scholar [24] Z. G. Ren et al., Dynamic stress test transient analysis of hydraulic excavator, J. of South China University of Technology (Natural Science Edition), 42(1), (2014) 22–28.

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  • Load spectrum generation of machining center based on

    Reliability bench tests and probability design method are two important means to improve the reliability of machine tools, while the load spectrum of machine tools is the foundation of reliability bench tests and probability design. According to the load spectrum, the actual working conditions can be simulated in laboratories. A dynamic load spectrum generation method is proposed to establish

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  • Yunkai Gao - Profile - SAE International

    Apr 14, 2020 · A compiled method of the programmed load spectrum, which can simplify and accelerate the fatigue bench test of a car body, is proposed and its effectiveness is checked by the fatigue simulation. By using the multi-body dynamics model with a satisfactory accuracy, the virtual iteration is applied to cascade body loads from the wheel hubs.

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  • ISO 8643:1997(en), Earth-moving machinery ? Hydraulic

    Where excavators or backhoe loaders are used for handling objects, a failure or rupture in the hydraulic boom circuit may endanger persons under raised loads. This risk can be reduced by applying a control device, which ensures controlled lowering of the boom load in the case of a hydraulic line failure or rupture in the boom circuit.

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  • ISO 8643:2017(en), Earth-moving machinery ? Hydraulic

    This document establishes uniform requirements and test procedures for lowering control devices fitted on the boom, intermediate boom and arm cylinders of hydraulic excavators and backhoe loaders to control the rate of drop in the case of a hydraulic line failure or rupture.

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  • Potential energy recovery method based on alternate

    The hydraulic excavator test method (GB/T 7586-2008) [17] developed in China has been standardized from measurements of the driver's control device and traveling speed along with test methods

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  • Single Pick Cutting Rock Load Identification Based on

    Jul 13, 2021 · The frequency response function of the system can be obtained by the finite element method. The test device is a single pick and single swing device; hence, it can be simplified to a cantilever beam. The free mode and working mode of the cantilever beam could be obtained in [21, 22]. Therefore, the solution of the natural frequency response

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  • Vertical Pile Load Test Procedure - Kentledge Method

    Also, Read: Construction of Pile Foundation by Direct Mud Circulation(DMC) method Pile Load Test Procedure – Kentledge Method : Apply a minimum seating load and release it before starting the actual load test. The above will ensure the proper functioning of …

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  • STATIC PILE LOAD TEST MANUAL - NYSDOT Home

    The Quick Load Test, 2. The Incremental Static Load Test, and 3. The Constant Rate of Penetration Test. The Contractor must engage the services of a Professional Engineer licensed and registered in New York State, experienced in all aspects of pile load testing and acceptable to the Deputy Chief Engineer Structures (D.C.E.S) to perform the load

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  • Development of a Comprehensive Driving Cycle for

    spectrum test method to reflect the actual operating con-ditionsofanHE.Basedonatestofthecross-sectioninternal force,thecross-sectionwasselectedatastress-freelocation of the bucket rod. Zhang and Zhai [20] tested a HE and collected corresponding load data under typical working conditions.Basedonthemeasureddata,theloadsegmen-

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  • Dynamic stress test and transient analysis of hydraulic

    To provide fundamental data for the fatigue test of hydraulic excavator working device, a load spectrum test method available to reflect actual operation condition of hydraulic excavator was

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  • (PDF) ANALYSIS OF HYDRAULIC EXCAVATOR WORKING …

    Oct 05, 2009 · The hydraulic excavator test method (GB/T 7586-2008) [17] developed in China has been standardized from measurements of the driver's control device …

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  • Strategy for Determining Analysis Working Conditions of

    The working device of a 21t hydraulic excavator was analyzed with finite element analysis method when comparing these working conditions with the traditional typical ones. The results come out that the largest stress of boom, arm and bucket under these conditions increased respectively by 4.6%, 5.6% and 19.1% compared with the traditional most

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  • CN102052365A - Test bench for hydraulic excavator pump

    The invention discloses a test bench for a hydraulic excavator pump valve, comprising a power mechanism, a hydraulic pump operating platform, a control platform, a pump test platform mechanism, a main control valve test platform mechanism and connecting pipelines. The test bench is characterized in that the power mechanism comprises a variable-frequency motor and a torque sensor, wherein the

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