Belt Tension

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Tatsuro Muro - One of the best experts on this subject based on the ideXlab platform.

  • Optimum track Belt Tension and height of application forces of a bulldozer running on weak terrain
    Journal of Terramechanics, 2003
    Co-Authors: Tatsuro Muro
    Abstract:

    Abstract The productivity of a flexible tracked bulldozer running on weak terrain varies remarkably with the flexibility of the track Belt and the height of application of effective drawbar pull or pushing force. The land locomotion resistance due to the sinkage of the rear sprocket of the bulldozer severely affects the tractive performance. Here, several relations between the track Belt Tension, the height of application forces, the driving force and the effective drawbar pull or pushing force, the amount of sinkages of the front idler and rear sprocket, the tractive power efficiency, and the slip ratio have been analysed for the given vehicle dimensions of a 150 kN weight bulldozer running on a silty loam terrain by means of a rigorous simulation programme. As a result, it is revealed that the effective drawbar pull and the tractive power efficiency increase remarkably with the increase of track Tension. Also, to obtain the maximum efficiency, the optimum height of application of effective optimum drawbar pull and pushing force is about 0, −40 and −80 cm, and the eccentricity of the vehicle center of gravity is −0.05, 0.00 and 0.05, respectively.

  • TRAFFICABILITY CONTROL SYSTEM FOR A TRACTOR TRAVELING UP AND DOWN A WEAK SLOPE TERRAIN USING INITIAL TRACK Belt Tension
    Soils and Foundations, 1995
    Co-Authors: Tatsuro Muro
    Abstract:

    The purpose of this paper is to establish a trafficability control system for a flexible tracked tractor traveling up and down a weak slope using an initial track Belt Tension sensor. The distribution of track Belt Tension and contact pressure depends on the initial track Belt Tension. In this paper, some analytical results are presented for a 50 kN weight tractor towing up (or down) other construction machinery on a decomposed weathered granite slope. The driving (or braking) efficiency of power decreases (or increases) remarkably with decrease in the initial track Belt Tension. The amount of depression of the rear sprocket increases vice versa with initial track Belt Tension, while the eccentricity of the resultant normal force remains almost constant. As a result, it has been confirmed that the lower limit of the initial track Belt Tension can be determined to be 2∼3 kN at the driving action and almost zero at the braking action, for the given vehicle and the given sloped terrain. This automation of the trafficability control system will produce a high power efficiency for a flexible tracked tractor towing up and down a weak slope.

Djuraev A. - One of the best experts on this subject based on the ideXlab platform.

Cheng-kuo Sung - One of the best experts on this subject based on the ideXlab platform.

  • Effects of Belt Flexural Rigidity on the Transmission Error of a Carriage-driving System
    Journal of Mechanical Design, 2000
    Co-Authors: Hung-ming Tai, Cheng-kuo Sung
    Abstract:

    This paper investigates the effects of Belt flexural rigidity and Belt Tension on transmission error of a carriage-driving system. The beam model associated with both the clamped and moving boundary conditions at two ends is utilized to derive the governing equation of the Belt. The Belt flexural rigidity is obtained and verified by an experimental technique. In addition, a numerical method is proposed to determine the Belt profile, transmission error and transmission stiffness. Results show that transmission error of a carriage-driving system increases when the carriage moves away from the driving pulley due to finite Belt flexural rigidity. According to the analyses, application of appropriate Tension on the Belt can significantly reduce the error. Furthermore, the transmission stiffness for representing the entire rigidity between the carriage and pulley is investigated based on the proposed beam model, A three-dimensional plot that indicates the relationship among the transmission stiffness, Belt Tension and the position of the carriage is obtained.

  • An experimental study on transmission efficiency of a rubber V-Belt CVT
    Mechanism and Machine Theory, 1998
    Co-Authors: T.f. Chen, Cheng-kuo Sung
    Abstract:

    This paper presents an experimental investigation on the speed and torque loss components of the power loss of a rubber V-Belt continuously variable transmission (CVT) as operating conditions (parameters) change. These conditions include the speed ratio, Belt Tension, rotational speed, external load, diameters of the pulley, etc. A dynamometer is constructed to measure the speeds and torques of the driving and driven pulleys so as to identify the losses and efficiency of the experimental CVT. The power loss of the CVT is investigated not only at constant running speeds but during acceleration when the speed ratio changed continuously. An uncertainty analysis is then performed for the estimation of the accuracy of experimental data. In addition, the repeatability of the experiment was studied to guarantee that reliable results were obtained. Experimental results demonstrated that the power loss as well as transmission efficiency of the CVT differed from those of the V-Belt drives.

A. G. Ulsoy - One of the best experts on this subject based on the ideXlab platform.

  • Design and Analysi s of Automotiv e Serpentin e Belt Drive System s for Stead y State Performanc e
    2014
    Co-Authors: A. G. Ulsoy
    Abstract:

    Serpentine Belt drive systems with spring-loaded Tensioners are now widely used in automotive engine accessory drive design. The steady state Tension in each Belt span is a major factor affecting Belt slip and vibration. These Tensions are determined by the accessory loads, the accessory drive geometry, and the Tensioner properties. This paper focuses on the design parameters that determine how effectively the Tensioner maintains a constant tractive Belt Tension, despite Belt stretch due to accessory loads and Belt speed. A nonlinear model predicting the operating state of the Belt/Tensioner system is derived, and solved using (1) numerical, and (2) approximate, closed-form methods. Inspection of the closed-form solution reveals a single design parameter, referred to as the ' 'Tensioner constant,'' that measures the effectiveness of the ten­ sioner. Tension measurements on an experimental drive system confirm the theoretical predictions.

  • Design and Analysis of Automotive Serpentine Belt Drive Systems for Steady State Performance
    Journal of Mechanical Design, 1997
    Co-Authors: R. S. Beikmann, Noel C. Perkins, A. G. Ulsoy
    Abstract:

    Serpentine Belt drive systems with spring-loaded Tensioners are now widely used in automotive engine accessory drive design. The steady state Tension in each Belt span is a major factor affecting Belt slip and vibration. These Tensions are determined by the accessory loads, the accessory drive geometry, and the Tensioner properties. This paper focuses on the design parameters that determine how effectively the Tensioner maintains a constant tractive Belt Tension, despite Belt stretch due to accessory loads and Belt speed. A nonlinear model predicting the operating state of the Belt/Tensioner system is derived, and solved using (1) numerical, and (2) approximate, closed-form methods. Inspection of the closed-form solution reveals a single design parameter, referred to as the Tensioner constant, that measures the effectiveness of the Tensioner. Tension measurements on an experimental drive system confirm the theoretical predictions.

Mamatova D.a. - One of the best experts on this subject based on the ideXlab platform.

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