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<正>3.3液压可拆卸鹅颈液压可拆卸鹅颈有地面承载和非地面承载两种,其中,非地面承载液压控制可拆卸鹅颈能够提供连续调整角度,可以提高低平板半挂车的通过性、安全性和适用性,是使用最为广泛的机械设备运输工具。3.3.1地面承载液压可拆卸鹅颈3.3.1.1地面承载液压可拆卸鹅颈结构原理地面承载可拆卸鹅颈的拆装是靠液压 相似文献
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别克君威轿车动力转向系统采用的是带液压助力的齿轮齿条式转向机构,由一个齿轮齿条式的机械转向器和液压助力装置组成。液压助力装置的工作压力可高达10 MPa以上,液压助力装置工作时无噪声,工作滞后时间短,而且能吸收来自不平路面的冲击。通过动力转向系统减轻了转向时驾驶人的劳动强度, 相似文献
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汽车的转向系是汽车的主要组成部分之一,转向系统的性能直接影响着汽车的操纵稳定性和安全性.随着液压技术的发展,液压转向系统已被广泛应用于汽车转向机构中,即在机械转向系的基础上加装转向液压式助力装置.汽车转向系统在使用过程中,由于机件磨损或损坏,转向性能会下降,即产生故障,而产生故障的部位主要有机械连接部分和液压部分两个方面.转向系统的机械连接部分的故障如转向系传动链过紧或卡滞、横拉杆球头部位松旷、转向节主销与衬套磨损、车轮轮毂轴承间隙过大等比较容易排除,关键是汽车的动力转向系统的液压油路中连接着转向泵、动力转向器、转向油罐和油管等,致使液压油路部分的故障不易诊断.检测液压动力转向系统最简捷而有效的方法就是设计一台动力转向系检测仪器. 相似文献
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低平板半挂车通常用来运输不可拆卸的工程机械等大型设备,可通过安装在车架后面的爬梯(亦称跳板)或者借助货台实现工程机械等可行走机械的装卸。尽管普通低平板半挂车运用广泛,但是由于承载面较高,装卸货物繁琐,不易确保运输的安全性。相比较而言,北美可折叠鹅颈低平板半挂车既能根据需要调节承载面的高度,提高其运输安全性,又能不借助爬梯或者货台实现工程机械等可行走机械的装卸。 相似文献
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1引言 随着国家经济建设的迅速发展,重型超长、超宽、超高、超重物件日益增多,由于受货物本身体积、重量及道路情况的限制,用普通车辆无法运输该型物件.为此,我们开发研制了重型多轴全挂车来满足运输要求.该运输设备的主要特点是采用液压平衡独立悬挂、全方位摆动的整体式车轴、机械液压全轮转向,货台高度可以自由调整,便于装卸货物及顺利地通过桥洞和隧道,并能进行纵向、横向任意拼接,以运送更重、更大的货物,是大件运输的理想设备. 相似文献
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介绍了RUTHMANN公司CARGOLOADER升降货台专用汽车的相关技术与性能,包括该类车辆的结构特点、优缺点、使用方法和性能参数等,借以启发同行开发出适合我国国情的具有货台升降功能的专用汽车。 相似文献
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本文对配车设计较为复杂的轴线模块半挂车,以尼古拉MDE车型为例,详细的介绍了液压鹅颈仰卧油缸与轴线模块前部部分轴线悬挂串联时,鹅颈施加在五轮鞍座上的力与串联的轴线轴压的比值关系。通过算例详细介绍了如何利用此比值关系确定大件装载位置的方法。介绍了轴线模块半挂车使用要点。 相似文献
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对汽车用机械液压助力转向系统、电子液压助力转向系统和电动助力转向系统的原理、优点、缺点及相关标准进行了阐述和分析。 相似文献
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汽车转向系统发展至今,已经历了机械转向、液压助力转向、电控液压转向、电动助力转向、主动转向、后轮随动转向、线控转向和操纵手柄式转向等形式。本文对各种助力转向系统技术及控制策略进行研究,为转向系统的进一步研究提供理论基础。 相似文献
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随着汽车及零部件行业的飞速发展,助力转向系统技术也得到了飞速发展和更新换代,从最初的机械助力转向,到液压助力转向,再到电动助力转向系统。尤其是随着当前汽车行业智能驾驶和车联网的发展,电动助力转向系统的高级功能开发和技术进一步提速,通过冗余设计从而来支持整车自动驾驶技术。 相似文献
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D. N. L. Horton D. A. Crolla 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1986,15(4):211-234
A theoretical analysis of the steering behaviour of articulated frame steer vehicles is presented. It includes details of the hydraulic steering system as well as the equations governing motion of the front and rear body units. Both oscillatory and exponential instabilities can occur with this type of vehicle. The most sensitive design feature is the steering system, which governs the effective torsional stiffness around the pivot. Other important features which influence stability are speed and centre of gravity positions of the bodies. 相似文献
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车辆的转向系统是车辆组成的重要部分,转向系统可以对车的安全性起到直接影响,如果说机械转向系统发生故障,就很容易导致安全事故的发生。通常情况下,车辆机械转向系统出现问题的主要原因都是在车辆使用时,机械转向系统的零部件之间出现了摩擦。本文作者将会根据以往的自身实际经验,以及车辆工作的原理,探讨如何维护和使用车辆机械转向系统的有效方式,对详细说明给予研究,为车辆机械转向系统的正确使用提供参考和借鉴。 相似文献
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This paper presents a novel sensor-less steering torque control method for applications to the steer-by-wire system. A steer-by-wire system has not any mechanical link to connect a steering wheel and a rack and pinion gear module. Instead of mechanical devices, two electric motors are used on each side. A one motor is attached to the steering wheel and the other is set on rack and pinion. The motor on the steering wheel works as a deliverer between a steering torque and load torque from the road. In this paper, we focus on motion control related to the steering feel based on impedance control. Therefore, the model of rack and pinion is not considered in this work. In most power steering systems, a torque sensor is used to set impedance effect on driver’s steering feel. In this paper, we proposed a novel steering control method without using any torque sensors. The effectiveness of a proposed method is confirmed from experimental results. 相似文献
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Simulation of Vehicle and Power Steering Dynamics Using Tire Model Parameters Matched to Whole Vehicle Experimental Results 总被引:3,自引:0,他引:3
Bongchoon Jang Dean Karnopp 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2000,33(2):121-133
This paper uses simulation to investigate how vehicle loading conditions (driver only, passengers, cargo, and fuel) affect power steering system and overall vehicle dynamics. Our purpose of the study was to evaluate the power steering system model for possible use in the National Advanced Driving Simulator (NADS). The effects of changing loading conditions on inertial properties of passenger cars have been found experimentally using a Vehicle Inertia Measurement Facility (VIMF). This paper presents simulation results using a vehicle handling model combined with a power steering system model and a nonlinear tire model. A crucial part of this project was the adjustment of certain parameters of Pacejka's tire model in order to match simulation results with experimental measurements of vehicle and power steering variables in transient maneuvers. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(2):121-133
This paper uses simulation to investigate how vehicle loading conditions (driver only, passengers, cargo, and fuel) affect power steering system and overall vehicle dynamics. Our purpose of the study was to evaluate the power steering system model for possible use in the National Advanced Driving Simulator (NADS). The effects of changing loading conditions on inertial properties of passenger cars have been found experimentally using a Vehicle Inertia Measurement Facility (VIMF). This paper presents simulation results using a vehicle handling model combined with a power steering system model and a nonlinear tire model. A crucial part of this project was the adjustment of certain parameters of Pacejka's tire model in order to match simulation results with experimental measurements of vehicle and power steering variables in transient maneuvers. 相似文献