Front end loader with automatic levelling for farm tractors

Latorre-Biel, Juan-Ignacio; Arana, Ignacio; Ballesteros, Tomás; Pintor, Jesús M.; Alfaro, José R.

doi:10.1016/j.biosystemseng.2016.05.011

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…Latoree et al developed an automatic leveling system by controlling the posture of the front-end loader during work on slopes or irregular surfaces. They expected this to reduce the labor of farmers and improve their productivity [12]. Kwon and Shin conducted structural analysis by using the load derived through hydraulic system analysis and evaluated the structural safety of the front-end loader.…”

Section: Introductionmentioning

confidence: 99%

Experimental Structural Safety Analysis of Front-End Loader of Agricultural Tractor

Kim,

Gim,

Nam

2024

Agriculture

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The agricultural front-end loader is an implement attached to the front of tractors to transport various agricultural materials, including soil. Since they are subjected to various loads due to the working environment, their safety analysis in consideration of actual working conditions is required. However, there are no official standardized test codes to consider various actual working environments currently. In this study, the structural safety of a front-end loader for static and fatigue failures was evaluated using new test code reflecting actual working environments. Thirty-four measurement locations were determined as the stress concentration spots of each component of the front-end loader derived through multibody dynamic simulation. The total testing time was set to 1 h, and the test time for each task was determined considering the duty percentage of the actual loader work. The measurement results showed that the maximum stress that exceeds the material’s yield strength occurred at two locations of the mount, which is the connection to the tractor body, resulting in static yielding. For tasks, the pulling and dumping exhibited the highest stress. The task that had the largest impact on fatigue damage was the dumping. The static safety factor was found to be over 1.93 and the fatigue life met the required lifespan at all measurement locations except for those exhibiting static yielding. Therefore, the most vulnerable part of the front-end loader is the mount, and it is necessary to secure the overall structural integrity by robust design for the mount.

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Section: Introductionmentioning

confidence: 99%

Experimental Structural Safety Analysis of Front-End Loader of Agricultural Tractor

Kim,

Gim,

Nam

2024

Agriculture

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“…Existing drill rig leveling methods are mainly three-point, four-point, or six-point. The three-point leveling method is simple and easily operated, but the controlled platform is subject to overturning under the action of external forces (Lee and Kang, 2018) (Latorre-Biel et al , 2016). Researchers have also explored six-point vehicular auto-leveling systems (Wang et al , 2013) (Tang and Jianping, 2016), which are complex and have generally low leveling efficiency because of the variable leveling environment.…”

Section: Introductionmentioning

confidence: 99%

Four-point dynamic leveling method for drilling platform application

2021

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Purpose It is essential to level the drilling platform across which a drilling robot travels in a slant underground coal mine tunnel to ensure smooth operation of the drill rod. However, existing leveling methods do not provide dynamic performance under the drilling conditions of the underground coal mine. A four-point dynamic leveling algorithm is presented in this paper based on the platform attitude and support rod displacement (DLAAD). An experimental drilling robot demonstrates its dynamic leveling capability and ability to ensure smooth drill rod operations. Design/methodology/approach The attitude coordinate of the drilling robot is established according to its structure. A six-axis combined sensor is adopted to detect the platform attitude, thus revealing the three-axis Euler angles. The support rod displacement values are continuously detected by laser displacement sensors to obtain the displacement increment of each support rod as needed. The drilling robot is leveled according to the current support rod displacement and three-dimensional (3 D) attitude detected by the six-axis combined sensor dynamically. Findings Experimental results indicate that the DLAAD algorithm is correct and effectively levels the drilling platform dynamically. It can thus provide essential support in resolving drill rod sticking problems during actual underground coal mine drilling operations. Practical implications The DLAAD algorithm supports smooth drill rod operations in underground coal mines, which greatly enhances safety, reduces power consumption, and minimizes cost. The approach proposed here thus represents considerable benefits in terms of coal mine production and shows notable potential for application in similar fields. Originality/value The novel DLAAD algorithm and leveling control method are the key contributions of this work, they provide dynamical 3 D leveling and help to resolve drill rod sticking problems.

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“…For this purpose, active systems are used to control the angle of inclination of the front loader's working tool based on real-time measurement of the terrain inclination using a simulation based on an electro-hydraulic proportional valve [12]. Supervisory systems and dedicated control algorithms are also being developed [13]. Electronic self-leveling systems connected to the ISOBUS network are being designed using real-time measurements of the bucket angle and angular velocity [14].…”

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confidence: 99%

A Model of an Extending Front Loader

Gralak,

Waluś

2024

Applied Sciences

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Front loaders used in agriculture are characterized by a compact structure, which limits the scope of their application. The loading possibilities are expanded by designing front loaders equipped with telescopic arms. This design increases the loader’s working area, making it easier to load trucks. It is necessary to work on the arm extension drive and perform strength analyses on the new structures. This article presents a FEM numerical analysis of the structure of an extending front loader and an assessment of the state of stress and the value of displacements under the influence of load. This study discusses the advantages and disadvantages of front loaders compared to telehandlers and the legal requirements and standards for the design of front loaders in Europe. This work presents the concept of loader arm movement and assesses the effectiveness of using hydraulic motors coupled with a screw gear. The obtained results prove that the newly designed extending front loader system is safe and stable.

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Front end loader with automatic levelling for farm tractors

Cited by 9 publications

References 9 publications

Experimental Structural Safety Analysis of Front-End Loader of Agricultural Tractor

Experimental Structural Safety Analysis of Front-End Loader of Agricultural Tractor

Four-point dynamic leveling method for drilling platform application

A Model of an Extending Front Loader

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