Hitachi large excavator

  • ESTIVATE: a model for calculating excavator productivity

    Jan 01, 2000 · Hydraulic excavator cycle time and associated unit costs of excavation for given input estimating data, for machines operating in the UK construction industry, are predicted. Using multiple regression analysis, three variables are identified as accurate predictors of cycle time: machine weight, digging depth and machine swing angle. With a coefficient of determination (R2) of 0.88, a mean

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  • 20000 Kg 160 Kobelco SK380 Excavator Machine, Maximum

    Product Description. With our in-depth knowledge of this domain, we are actively engaged in providing an excellent quality range of Kobelco SK380 Excavator Machine. Sturdy Construction & Built-in Durability. Stable Attachment Strength. Forged and cast components are used throughout. The arm tip's cross-sectional coefficient is 15 % higher than

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  • Excavator Inclinometer - Application of Inclinometers on

    II. Application of Inclinometer on Excavator for Chassis Leveling. The digging force of the excavator has a direct relationship with the adhesion coefficient between the ground and the track. If the digging force exceeds the limited value, in the case of backhoe, the excavator will slide forward, which is …

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  • what is a excavator | Oujin

    m: Adhesion coefficient between the ground and the track. If the digging force exceeds this limit, in the case of a backhoe, the excavator will slip and be pulled forward, which is very dangerous. In the case of a forward shovel, the excavator will slip backward. Digging power

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  • Pearson's correlation

    The Pearson correlation coefficient value of 0.877 confirms what was apparent from the graph, i.e. there appears to be a positive correlation between the two variables. However, we need to perform a significance test to decide whether based upon this sample there is any or no evidence to suggest that linear correlation is present in the population.

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  • Estimation of Hydraulic Backhoes Productivity for

    excavator for given mining-and-geological conditions must be accompanied, on the one hand, by an assessment of excavator's effective productivity, and on the other hand – by an analysis of the parameters determining this where: c1 – correction coefficient (0.5–0.75). Approximation of the dependence of maximum digging radius of the

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  • CONTROL VALVE HANDBOOK

    iii Preface to Fourth Edition Control valves are an increasingly vital component of modern manufacturing around the world. Properly selected and maintained control valves increase efficiency, safe-

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  • STRUCTURAL ANALYSIS ON LIGHTWEIGTH EXCAVATOR ARMS

    coefficients. This study is carried out both for the original steel solution and for the innovative aluminum solution. Finally the safety coefficients are estimated assuming that the cycles to which the excavator is subjected are equal to 2 * 10 ^ 6. From the analysis it emerges that …

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  • Estimation of Hydraulic Backhoes Productivity for

    excavator for given mining-and-geological conditions must be accompanied, on the one hand, by an assessment of excavator's effective productivity, and on the other hand – by an analysis of the parameters determining this where: c1 – correction coefficient (0.5–0.75). Approximation of the dependence of maximum digging radius of the

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  • China Excavator Track Shoe Plate, Excavator Track Shoe

    China Excavator Track Shoe Plate manufacturers - Select 2021 high quality Excavator Track Shoe Plate products in best price from certified Chinese Plate With Design, Steel Plate Machine suppliers, wholesalers and factory on Made-in-China.com

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  • Strength analysis of excavator bucket based on normal

    In view of the phenomenon that the excavator bucket is damaged before it reaches the theoretical life in the actual normal digging process. Based on the continuous trajectory theory, the three-segment continuous trajectory excavated alternately by bucket and rod is selected as the normal digging trajectory. The theoretical digging force (TDF) and limiting digging force (LDF) on the normal

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  • HIGH PERFORM ANCE MORE EASILY AND IMPROVE THE …

    Apr 29, 2019 · High performance more easily and improve the loading bucket bucket loading coefficient; locking clutch torque converter to achieve large margin traction and speed ramp. Compared with the H series, fuel consumption reduced by 10%, the economic model optimization, the most fuel-efficient and minimal impact on production efficiency.

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  • Track vs Wheeled Equipment: Which Type of Machine Should I

    The coefficient is the relationship between the available pull (ground conditions) and the weight acting on the drive unit (track or tire). The traction coefficient formula is "pull = (coefficient of traction) x (weight on drive units)" and it's measured in a decimal rating with 0.1 being almost no traction and 1.0 being a …

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  • Study on Value Evaluation Model of Used Excavators Based

    Jul 08, 2018 · Considering the difference and similarity of construction machinery, the typical single bucket hydraulic excavator is selected to verify the evaluation method. AHP method is adopted to analyse and determine the influence factors, comprehensive parameters and adjustment coefficient of used excavator, as well as their weights, and then determine

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  • Strength analysis of excavator bucket based on normal

    In view of the phenomenon that the excavator bucket is damaged before it reaches the theoretical life in the actual normal digging process. Based on the continuous trajectory theory, the three-segment continuous trajectory excavated alternately by bucket and rod is selected as the normal digging trajectory. The theoretical digging force (TDF) and limiting digging force (LDF) on the normal

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  • MODELLING AND ANALYSIS OF EXCAVATOR ARM

    An excavator is an engineering vehicle consisting of a backhoe with cabin for the operator and engine is used for power generation. If the stability coefficient is close to 1, the payload swinging can cause the separation of a support from the terrain; nevertheless, they have found that the excavator overturning stability can be restored [2

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  • Excavators | Cat | Caterpillar

    The stability of excavator represents with coefficient of stability K, and it is the excavator ratio for the stabilizing moment M1 and tilting moment M2 at the edge that topples.K, less than 1,

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  • Excavator - DOMITE

    Excavator Protection Benefits. Support GET for Maximum Penetration. Provide external edge protection for High Durability. Less Maintenance required = Less Machine Downtime. Reduced hang up – Domite products have a low coefficient of friction so will be less likely to hold carry back. Weight Reduction vs generic systems – engineered design.

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  • EXCAVATOR: detecting copy number variants from whole-exome

    Dec 10, 2013 · We developed a novel software tool, EXCAVATOR, for the detection of copy number variants (CNVs) from whole-exome sequencing data. EXCAVATOR combines a three-step normalization procedure with a novel heterogeneous hidden Markov model algorithm and a calling method that classifies genomic regions into five copy number states. We validate EXCAVATOR on three datasets …

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  • STRUCTURAL ANALYSIS ON LIGHTWEIGTH EXCAVATOR …

    coefficients. This study is carried out both for the original steel solution and for the innovative aluminum solution. Finally the safety coefficients are estimated assuming that the cycles to which the excavator is subjected are equal to 2 * 10 ^ 6. From the analysis it emerges that …

    Learn More