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1.故障现象某型号小吨位起重机底盘常见故障之一是转向器产生异响。据统计,该异响主要表现为以下4种情况:一是向左侧转向至某个角度范围时异响,二是向右侧转向至某个角度范围时异响,三是两侧转向至某个角度范围时异响,四是提高发动机转速至一定范围时异响。转向器异响严重影响驾驶员驾驶的安全性和舒适性。2.转向器结构该小吨位起重机采用整体式转向器,其内部为循环球式结构,主要由转向螺杆、阀芯、扭杆、转向螺母、转向器壳体等组成,如图1所示。循
1. Symptom One of the common faults of a small tonnage crane chassis is the abnormal sound produced by the steering gear. According to statistics, the abnormal sound mainly for the following four kinds of situations: First, to the left when turning to an angle range of abnormal sound, the second is to the right to a range of angles when the abnormal sound, the third is turned to both sides Abnormal sound when a certain angle range, four is to improve the engine speed to a certain range of abnormal sound. Steering abnormal sound seriously affect the driver’s driving safety and comfort. 2. Steering Structure The small tonnage crane adopts integral steering gear. The internal structure of the small steering crane is a recirculating ball structure, which is mainly composed of steering screw, valve core, torsion bar, steering nut and steering gear housing, as shown in Figure 1. Follow