Poems about excavators

  • Longitudinal vehicle dynamics model for construction

    The reference machine used for this research is a fourteen-metric ton wheel loader with a bucket which can hold up to 2.3 m3 of material (Figure 1). This machine has been used within the authors' research group in other research activities related to controlling the motion to reduce cab vibrations [15]. In order

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  • Depth Optimization Analysis of Articulated Steering Hinge

    EFFECT OF WHEEL GEOMETRY PARAMETERS ON VEHICLE STEERING

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  • Electronics | Free Full-Text | Rollover Prevention Control

    2 days ago · In this type of vehicle, steering is achieved by changing the articulation angle using the hydraulic cylinder between the front and rear bodies. This type of steering has generally been adopted in construction machines such as wheel loaders, scrapers, loaders, and skidders [18,19]. Boschung's Urban-Sweeper S2.0 as well as the KIIT and AMSV

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  • Kingpins - an overview | ScienceDirect Topics

    To reduce or even eliminate pivot to wheel centre offset, the whole stub axle, hub bearing assembly and disc or drum would have to be positioned within the centre region of the wheel rim and also extend, and therefore protrude, beyond the wheel rim flange (Figure 10.5).A dished wheel arrangement of this type is known as centre point steering because both pivot centre and contact patch centres

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  • Research on Torque Ratio Based on the Steering Wheel

    Up to12%cash back · Oct 08, 2020 · Steering tests showed a significant drop in system pressure fluctuation, the energy consumed is also reduced. Further, the analysis shows that the force arm difference is the main factor causing the pressure fluctuation, providing the theoretical and experimental basis for the design of a steering system of wheel loaders.

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  • Research on modeling and compensation control strategy of

    the development of nonlinear research on steering system. steering resistance moment model, and so on. steering shaft torque, and wheel angle, respectively. In equation (4), the electric

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  • Research on dynamic behaviors of wheel loaders with

    Results showed that (1) the three layouts of suspensions can greatly reduce the vector sum of weighted acceleration; (2) the UCS suspension affects both the driving and operation stability of the wheel loader, and the IC-R suspension affects the operation stability when the wheel loader scoops and unloads crushed rocks, (3) the IC-RP suspension with anti-roll and anti-pitch functions has little effect on the …

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  • Research on realization of force feedback of vehicle

    Jun 30, 2017 · Automotive steering system is able to directly experience the road information, directly determine whether the car is in a stable state of device, good fast steering system directly determine the stand or fall of the console, so the steering force feedback also gradually become the research hot spot. This paper mainly through torque motor as the main driver of steering system components

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  • High Stability Lateral Guided Method for Articulated

    improve the work efficiency for the automated wheel loader the stable and simple lateral guiding method for the articulated vehicle is needed. Authors proposed and demonstrated SSM (Sensor Steering Mechanism) for the front wheel vehicle[13], the four-wheel steering vehicle with reverse phase mechanism[14-17] and the rear wheel steering vehicle[18].

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  • Analysis of vehicle static steering torque based on tire

    A large number of steering experiments of wheel loaders show that there is always obvious As shown in Figure2, the formulas for calculating the steering resistance moment based on the virtual displacement principle are as follows: (L1 sinb = L1+L2 sinq q = a+ b) 8: ¶a = (1 pkcosq 1 k 2 q

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  • Study on Skid-Steering Drag Force Calculation and Model

    The skid-steering vehicle is able to be steered by the speed difference of the inside and outside wheels created by controlling the torque distribution of all drive wheels. The three degree of freedom dynamic equations are established for electric ground vehicle with six in-wheeled motors, based on which the drag force calculation model is presented under steady skid-steering condition.

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  • Mechanism analysis of pressure fluctuation in wheel …

    Research on Torque Ratio Based on the Steering Wheel

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  • MODELING AND DYNAMIC ANALYSIS OF …

    • An articulated steering wheel loader has two separate parts that are connected by a vertical axis pivot. The relative yaw angle between these two parts is changed by two hydraulic cylinders when the driver turns the steering wheel. • Research on the wheel loader stability and dynamics could be experiments and computer simulations.

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  • Maha Fluid Power Research Center - Purdue University

    The steer-by-wire compact wheel loader is also equipped with a remote control to steer the vehicle at a distance. This opens the door for efficient and simple autonomous steering of off-highway mobile equipment. Skid-Steer Loader Pump-controlled technology has been demonstrated on compact machinery at the Maha Fluid Power Research Center.

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  • ANovelReal-TimeCenterofGravityEstimationMethodforWheel

    When the wheel loader is operating in complex operating conditions, the wheels often slip because of the large spading force. According to the wheel loader dynamic model and correlation vehicle theory, the determination of the CG location accurately is an ef-fective approach to realize precise longitudinal control of loader and prevent wheels

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  • Research on Steering Resistance Moment of Wheel Loader

    The wheel loader as the research object in present article, its steering mechanism is analyzed for the relationship between the steering cylinder displacement and the …

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  • THE STEERING SYSTEM - Automotive Engineering Research …

    Forces and moments on the steering system The forces and moments in the steering system stems from those acting at the wheel-ground interface. Wheel contact forces are conventionally referred to the wheel contact center. We call them: Normal force Tractive force Lateral force Self-alignment torque Rolling resistance moment

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  • Effect of Straight Grousers Parameters on Motion

    For optimizing wheel configuration of planetary rover, the effect analysis of straight grousers on motion performance of a small rigid wheel was conducted in loose sand bin. All tests were done at a free wheel sinkage and 0 to 60% slip in a single-wheel test bed. By the qualitative analysis and comparisons of tractive and steering performance

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  • MECHANICS OF PNEUMATIC TIRES

    Overturning moment M x is the moment about the X axis exerted on the tire by the road. Rolling resistance moment M y is the moment about the Y axis, and aligning torque M z is the moment about the Z axis. With this axis system, many performance parameters of the tire can be conveniently defined. For instance, the longitudinal shift of the

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  • Research on realization of force feedback of vehicle

    Jun 30, 2017 · Automotive steering system is able to directly experience the road information, directly determine whether the car is in a stable state of device, good fast steering system directly determine the stand or fall of the console, so the steering force feedback also gradually become the research hot spot. This paper mainly through torque motor as the main driver of steering system components

    Learn More