内燃叉车一般由门架、行走、电气、液压、操纵、动力、变速、车架以及转向等系统组成。各个系统相互联系,任何一个系统出现问题,都会影响叉车的正常运转,甚至带来安全隐患。现结合多年叉车设计及维修经验,对各系统常见疑难问题做简要分析,并提出解决方法。1.门架系统(1)货叉架升降时异响其原因是内外导轨面不平、滚轮局部受力不均匀。解决办法如下:打磨导轨面后做载荷强化实验,使打磨后的导轨面冷作硬化;调整两链条松紧度使其一致,并在轨道面涂抹黄油。(2)门架起升时颤动其原因是起升缸供油不足。解决办法如下:检查相关液压管路有无堵塞,如无堵塞再清洗或更换多路阀。2.行走系统叉车行走系统由驱动桥、驱动轮、制动器、制动鼓和轮毂等组成,最常见的疑难问题有以下2种:(1)制动时制动踏板上下跳动其原因是制动鼓圆度超差。解决办 Internal combustion forklifts generally by the gantry, walking, electrical, hydraulic, steering, power, variable speed, frame and steering systems. Each system interconnected, any one system problems, will affect the normal operation of forklifts, and even bring security risks. Now combined with many years of forklift truck design and maintenance experience, the system of common problems to do a simple analysis and propose solutions. 1 gantry system (1) forklift lifting abnormal sound when the internal and external rail surface is uneven, the wheel partial force uneven. The solution is as follows: after grinding the rail surface to do the load-hardening experiments, so that polished rail surface cold hardening; adjust the tightness of the two chains to make it consistent, and smear butter on the track surface. (2) The reason why the mast vibrates when it rises is that the lifting cylinder is not enough oil. The solution is as follows: Check the relevant hydraulic piping for blockage, such as no blockage and then clean or replace the multi-way valve. 2. Traveling system Forklift traveling system consists of transaxle, driving wheel, brake, brake drum and hub, etc. The most common problems include the following two kinds of problems: (1) Braking brake pedal up and down the reason is that braking Drum roundness tolerance. Solution