Control System for the Mountainous Orchard Electric-Drive Monorail Transporter

Li, Zhen; Xu, Pei; Ouyang, Yu Ping; Lv, Shi Lei; Dai, Qiu Fang

doi:10.4028/www.scientific.net/amm.738-739.935

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Reference [4] designed a remote-controlled traction single track orchard monorail transport vehicle, references [5] designed an unmanned mountain monorail transport vehicle, and references [6] designed a PT2262/PT2272 wireless communication electric monorail transport vehicle control device based on microcontroller control. These wireless remote control devices can liberate productivity and improve production efficiency, but the mountainous orchard environment is complex and harsh, and the wireless signal is easily affected by fruit tree obstruction and terrain factors, with severe attenuation [4][5][6][7] . It is prone to wireless signal loss or exceeding the remote control range, causing monorail transport vehicles to lose control, affecting the normal transportation of fruits, causing property damage and even life threatening.…”

Section: Introductionmentioning

confidence: 99%

Design and reliability evaluation of the control device for electric monorail transport vehicles

Luo,

Feng,

2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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A control device for electric monorail transport vehicles based on Si1000 has been developed to improve the reliability and safety of the entire vehicle operation. This control device includes two parts: manual remote control and onboard control, which can achieve remote wireless control of the start stop, direction, and running speed of electric monorail transport vehicles. The communication distance and speed control of Si1000 were tested by simulating the terrain of mountain orchards. The test results show that the Si1000 wireless communication module can achieve a communication success rate of 100% within a communication distance of 500 meters, and can effectively control the running direction and speed of monorail transport vehicles.

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Section: Introductionmentioning

confidence: 99%

Design and reliability evaluation of the control device for electric monorail transport vehicles

Luo,

Feng,

2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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“…Wire rope traction-based carrier used in mountainous orchard is drawn by wire ropes, and the trolley travels along the track with a certain slope. e track is welded by 2 parallel tubes and auxiliary beams, and the slope of the track is set between 10 °and 40 ° [2][3][4][5]. Figure 1 shows the application site of the mountain track carrier.…”

Section: Introductionmentioning

confidence: 99%

Calibration and Analysis of Mechanical Modeling for Traction Wire Rope of Mountainous Orchard Carrier

Ouyang

Wang

Hong

et al. 2021

Mathematical Problems in Engineering

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Low-cost transporting vehicles are a crucial routine for orchards in the mountainous place. As the core component of the mountainous orchard carrier, the wire rope is easily damaged due to frequent handling of agricultural materials. The mechanical model of carrier wire rope is the prerequisite for studying its damage mechanism. This paper first analyzes the load-bearing characteristics of the wire rope of the carrier and then uses the theory of differential geometry and the elasticity of the wire rope to establish the mechanical model of the wire rope side strand strain ε0 and the axial load T of the wire rope end face in the erect state and the radial contact pressure Fa of the wire rope at the bending section and the mechanical model of the axial tension F and the pulley diameter D of the wire rope end face. On the basis of the mechanical model and the wire rope geometric solid model, the finite element stress analysis of the wire rope in the vertical state was carried out to verify the accuracy of the wire rope stress model. The results show that when the wire rope was in the vertical state, the wire-wire contact stress was linear directly proportional to the load on the end face of the wire rope; the wire-wire contact stress between the strands was about 12 times that within the strand; the average error between the simulated value and calculated value was about 13.6%, proving the correctness of the established wire mechanics model. When the rope and wheel were in contact, the contact pressure of the outer wire of the side strand was only related to the axial tension of the wire rope end face and the diameter of the pulley but not to the elasticity modulus of the pulley.

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“…Mechanized transportation has become a core demand for agriculture and forestry operations in hilly and mountainous areas [ 3 ]. Mountain monorail transporters have the characteristics of simple structure, flexible rail laying, easy installation, and good operating performance [ 4 ]. In recent years, experts have conducted a lot of research on mountain monorail transporters and developed a variety of mountain monorail transporters.…”

Section: Introductionmentioning

confidence: 99%

Influence of Toothed Rail Parameters on Impact Vibration Meshing of Mountainous Self-Propelled Electric Monorail Transporter

Liu

Hong

2020

Sensors

Self Cite

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In order to reduce the vibration of mountain self-propelled electric monorail transporters (MSEMT) caused by the impact of the meshing of roller gear with toothed rail (MRGTR), and to improve the stability and safety of monorail transporters, this paper theoretically analyzed the MRGTR mechanism of toothed monorail transporters as well as established the MSEMT displacement model and its instantaneous velocity model. The vibration signals of MSEMT with four different parameters of toothed rail were collected by the acceleration sensor and signal acquisition system. The signals were analyzed by the Hilbert envelope demodulation method to investigate the influence of toothed rail parameters on meshing impact vibration. Moreover, taking the vibration acceleration amplitude of MSEMT and the vibration attenuation time of meshing impact as evaluation indexes, a test based on the three-factor and two-level orthogonal test was engaged with factors of toothed rail pressure angle, the ratio of L—the chord length of two adjacent roller centers of a roller gear—and rack pitch p (wheel-tooth ratio) and the load mass of the MSEMT. It showed that the impact of MRGTR was the main excitation source of the vibration of MSEMT. The pressure angle and wheel-tooth ratio both have a significant impact on the smooth operation of MSEMT, the latter to a greater extent. So did the interaction between wheel-tooth ratio and load mass. The amplitude of the characteristic frequency of the MSEMT decreased with the growth of the pressure angle. When the wheel-tooth ratio was cosα, the number of the characteristic frequency was less than that when it was 1, and the amplitude became smaller too. When the pressure angle was 15, the amplitude of vibration acceleration characteristic frequency decreased as a consequence of load mass increasing. At the pressure angle of 25, the amplitude of characteristic frequency decreased with the increase of load mass if the wheel-tooth ratio was 1, and the opposite result occurs in the case when the wheel-tooth ratio was cosα. This paper provides a theoretical basis and reference for improving the impact vibration of MRGTR and optimizing the design of the toothed rail.

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Control System for the Mountainous Orchard Electric-Drive Monorail Transporter

Cited by 4 publications

References 3 publications

Design and reliability evaluation of the control device for electric monorail transport vehicles

Design and reliability evaluation of the control device for electric monorail transport vehicles

Calibration and Analysis of Mechanical Modeling for Traction Wire Rope of Mountainous Orchard Carrier

Influence of Toothed Rail Parameters on Impact Vibration Meshing of Mountainous Self-Propelled Electric Monorail Transporter

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