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目前,采煤机牵引机构液压系统多为闭式系统,由于采煤机工作条件、牵引机构的结构及闭式液压系统的特点,导致牵引机构发热比较严重。靠箱体自身散热远不能保证油温在规定的范围内,通常需在液压系统中设置冷却器,确保油池温度不超限。但液压系统内部油液的温升状况、温度的数量级及其对系统性能的影响程度等问题,长期以来没有引起人们的足够重视。本文着重讨论冷却器安装位置对液压系统内部温度的影响,通
At present, the hydraulic system of shearer traction mechanism is mostly closed system. Due to the working conditions of shearer, the structure of traction mechanism and the characteristics of closed hydraulic system, the heating mechanism of traction mechanism is more serious. Reliable by the box itself can not guarantee the oil temperature in the specified range, usually need to set the cooler in the hydraulic system to ensure that the tank temperature does not exceed the limit. However, the problem of temperature rise, the order of magnitude of temperature and the degree of influence on the system performance of the hydraulic system has not attracted sufficient attention. This article focuses on the cooler installation location on the hydraulic system of the internal temperature, through