Repair Carter Excavator

  • 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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  • CN103343742A - Testing system and testing method for

    The invention discloses a testing system and a testing method for characteristics of a plunger pump. The testing system is characterized in that a torque and rotating speed tester is installed on an output shaft of a driving motor and used for detecting the input torque and the angular speed of the plunger pump; a two way cartridge valve is installed in an outlet pipeline of the plunger pump

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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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  • 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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  • 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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  • Plate Bearing Test (Complete Guide WITH PICTURES

    Sep 27, 2018 · The test is conducted by jacking a steel plate of known area against a resistance load, usually a heavy, tracked excavator. The size of plate is selected based on the scope of test and design load required, as well as the reaction weight (excavator) available.

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  • US5566092A - Machine fault diagnostics system and method

    The invention provides a machine fault diagnostic system to help ensure effective equipment maintenance. The major technique used for fault diagnostics is a fault diagnostic network (FDN) which is based on a modified ARTMAP neural network architecture. A hypothesis and test procedure based on fuzzy logic and physical bearing models is disclosed to operate with the FDN for detecting faults that

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  • INTERNATIONAL ISO STANDARD 12117-2

    This part of ISO 12117 provides a test method for roll-over protective structures (ROPS) for hydraulic excavators of over 6 t used in earth-moving. Unlike the machines covered by ISO 3471, hydraulic excavators feature large attachments which affect the required performance capability of the ROPS. Therefore, the test method and criteria required

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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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  • 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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  • 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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  • (PDF) Study on Calculating Method of External Load on

    Mar 31, 2020 · spectrum test method is proposed which can reflect the actual working conditions of excavator working device. In reference [7], the load spectrum of transmission system is stud ied.

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  • Research on Welding Structure with Transition Changing

    Jun 12, 2018 · The cycle test method was performed during fatigue test. This method is known as low–high–low (LHL) based on the low, then high, then low force sequence used to simulate working load of excavator. Additionally, the equivalent-time of load spectrum was 1000 h …

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  • Load spectrum generation of machining center based on

    1) The cutting load measuring system is built and then the 16 sets of cutting tests are designed by the orthogonal test method. 2) In order to improve the precision of the load spectrum, the extrapolation of the load is carried out by the parametric extrapolation method.

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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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  • Study on test and preparation of load spectrum of

    Jan 01, 2017 · The test of load signal and preparation of load spectrum for the hydraulic excavator are studied in this paper. In the first place, pretreatment of filtering and noise reduction for load signal is conducted based on experimental test on site and experimental working condition analysis.

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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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  • 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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  • AEM/CECE/CEMA/KOCEMA Joint Technical Liaison Meeting

    Fuel consumption on hydraulic excavator in working condition - Test procedures (JCMAS H020) Fuel consumption on hydraulic excavator in working condition - Test procedures "in working condition" was removed. Test modes (1) simulated digging & loading, (2) leveling, (3) traveling, (4) idling with use the weight mass and arm attached load device.

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