Flexible Dynamic Analysis of Hydraulic Excavator's Boom
To study the dynamic response of hydraulic excavator's boom under different road condition, this paper set up numerical model of excavator's working device, then set up the virtual prototyping simulation model of excavator's working device and simulated the flexible dynamic response characteristics of the boom based on multi-body dynamic software, RecurDyn.
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Research on Trajectory Planning and Autodig of Hydraulic
May 04, 2017 · As the advances in computer control technology keep emerging, robotic hydraulic excavator becomes imperative. It can improve excavation accuracy and greatly reduce the operator’s labor intensity. The 12-ton backhoe bucket excavator has been utilized in this research work where this type of excavator is commonly used in engineering work. The kinematics …
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The gravitational potential energy regeneration system
Jan 01, 2017 · The closed-circuit energy regeneration system of linear motion loads such as hydraulic linear actuators of the boom of hydraulic excavators has not been reported. This paper aims to develop a closed-circuit GPERS of the boom of hydraulic excavator. An 8 t …
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The Finite Element Analysis of the Boom of 20-ton Backhoe
Taking the boom of 20-ton backhoe hydraulic excavator as the research object, this paper analyzed the strength of the boom by ANSYS software, simulated the load condition of the boom under the bucket excavation condition, and obtained the stress distribution cloud diagram of the boom. The analysis results show that the stress of the boom of the excavator is mainly concentrated on the hinge of
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Kinematics Performance Simulation and Optimization of
In order to study the influence of key hinge point's positions to the kinematical performance of the face-shovel hydraulic excavator working device, a forward kinematics model of the working device is presented firstly. And then the simulation model is established in ADAMS. The working processes are simulated and the bucket digging envelope diagram is drawn.
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Energy saving of hybrid hydraulic excavator with
Sep 15, 2021 · An innovative hydraulic hybrid excavator is proposed in this paper to save energy. An electrical hydraulic continually variable powertrain is proposed to drive the main pump, in which both the speed and torque of the engine can be controlled to ensure that the engine working points lie in the high efficiency range with the proposed energy management strategy.
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Kinematics Performance Simulation and Optimization of
In order to study the influence of key hinge point's positions to the kinematical performance of the face-shovel hydraulic excavator working device, a forward kinematics model of the working device is presented firstly. And then the simulation model is established in ADAMS. The working processes are simulated and the bucket digging envelope diagram is drawn.
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Review Article A Review on Mechanical and Hydraulic System
Hydraulic excavators are from the most widely used earthmoving equipment in construction and mining indus- as automatic excavators and hybrid excavators. Like any model-based system design, the usual practice in controller in the acceleration pro le may cause sudden and large force variations, which lead to jerk on the manipulator [, ].
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BOOM | Scientific.Net
Abstract: Regarding 20 tons hydraulic excavator boom in an enterprise as the research object, the boom volume was set as an optimized object. According to the dynamic simulation analysis of working device in typical working conditions, constraint conditions including the maximum stress, displacement range and thickness variable ranges of each steel plate, were determined, and the thickness of
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Electro-hydraulic velocity and position control based on
Therefore, according to the independent metering valve control system and pump-valve hybrid control principle, a velocity and position combined control strategy based on mode switching is proposed to control the boom and arm of hydraulic excavator. Then, a mechanical-hydraulic co-simulation model including the whole hydraulic excavator is
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Simulated research on large-excavator boom based on
Jan 26, 2021 · Simulated research on large-excavator boom based on hydraulic energy recovery Heng-yuan Xing, Ji-yun Zhao, Xiang Yin, Hai-gang Ding, Xian-zhuang Meng, Li Jian-song, and Wang Guo-ying Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 0 10.1177/0954406220977556
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Knowledge-Based Structure Optimization Design for Boom of
Aug 21, 2021 · 3.1. Knowledge-Based Optimization Design Method. The boom is a large part of the excavator, which is a large consumption of materials and energy consumption. The greater the volume of material consumed, the greater the mass. So, the boom is designed as small as possible under the condition of satisfying the engineering application.
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A Low-Cost Solution For Excavator Simulation With
Abstract—A low-cost excavator simulator has been developed in this paper for training human operators and evaluating control strategies for heavy-duty hydraulic machines. In such a system, the operator controls a virtual excavator by means of a joystick while experiencing realistic operating feelings through
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Dynamic Simulation of a Hydraulic Excavator to Determine
forces in the hydraulic cylinder of the bucket, stick and boom. 2. Method of study Basic parameters of excavator model: Standard excavators come in a variety of sizes, from mini excavators that are perfect for tight job sites to large excava-tors designed for heavy-duty applications. Bucket, stick and
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A novel hydraulic excavator boom driving system with high
Jun 15, 2018 · Due to large throttling loss and gravitational potential wasting, conventional hydraulic excavator boom driving system has very low energy efficiency. This paper aims to improve the energy efficiency of the hydraulic excavator by reducing throttling loss and regenerating potential energy directly based on a novel pump controlled system.
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Appl ication of a risk-based method to evaluate o …
they have struck workers. Some excavators can have . relatively large blind spots, with up to about 50% of the . perator's direct visibility to the field of view obscured by This report describes the application of a risk-based method to evaluate the operator's field of view from a medium . …
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Towards RL-Based Hydraulic Excavator Automation
Towards RL-Based Hydraulic Excavator Automation Pascal Egli 1 and Marco Hutter Abstract In this article we present a data-driven approach for automated arm control of a hydraulic excavator. Except for the link lengths of the excavator, our method does not …
Get a quoteFinite element analysis of excavator mechanical behavior
Mar 01, 2021 · Based on 3D geometry and FEM software, Xu et al. investigated the mechanical properties of a new power saving excavator boom. Stress tests on the new boom was also carried out to validate the FEM, and the test results exhibited a good agreement with the numerical analysis. Wang et al. developed a new geometry structure of the excavator boom
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Hydraulic System Modeling through Memory-based …
Hydraulic machines are commonly used in the areas of con-struction, mining and excavation. A typical machine used fre-quently in excavation - a hydraulic excavator (HEX) - is shown in Fig 1. Today attention is being focused on automating tasks such as mass excavation and continuous mining where a dig-
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Optimal Control for a Parallel Hybrid Hydraulic Excavator
Jun 02, 2013 · Wang et al. did simulation research and evaluated energy saving effect in parallel hybrid excavators in 2005 and also presented a way to recover potential energy from excavators . The parallel model, system dynamic analysis, rule-based control strategy, fuzzy logic control strategy, and component sizing are put forward by Wang et al. [3–7]. Despite of all these efforts in the field, few papers focus on …
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