﻿ 球铰轴承异响及异常运动原因分析 Cause Analysis for Swashplate Bearing Abnormal Noise and Abnormal Motion

Mechanical Engineering and Technology
Vol.07 No.03(2018), Article ID:25665,11 pages
10.12677/MET.2018.73026

Cause Analysis for Swashplate Bearing Abnormal Noise and Abnormal Motion

Hongyu Liu1,2

1Shanghai Bearing Technology Research Institute, Shanghai

2Shanghai Special Bearing Engineering Technology Center, Shanghai

Received: Jun. 3rd, 2018; accepted: Jun. 21st, 2018; published: Jun. 28th, 2018

ABSTRACT

Abnormal noise and abnormal motion had occurred during the swinging wear testing process of one type swashplate bearing. To analyze the reason, this paper adopted the analysis method of rigid body kinematics, to carry out the simulation analysis about swinging wear testing process from swinging wear testing machine of contact pair, assemble clearance between bearing inner ring and guide tube, coaxial degree between bearing inner ring and outer ring of the three parties. The analysis results show that the testing machine with a variety of complex contact pair caused the circumferential motion of bearing inner ring. When the assemble clearance exists between the inner ring and guide tube, periodic collision occurs and it may be result in abnormal noise, and with the increase of assemble clearance, collision phenomenon the more obvious. If bearing inner and outer ring dis-alignment, bearing inner ring circumferential rotation will be arisen.

Keywords:Swashplate Bearing Abnormal Noise, Abnormal Motion, Rigid Body Kinematics, Motion Simulation, Hydraulic Cylinder Displacement Curve

1上海市轴承技术研究所，上海

2上海特种轴承工程技术中心，上海

1. 引言

1-轴销；2-1#液压缸；3-导筒；4-2#液压缸；5-3#液压缸；6-轴承内圈；7-轴承外圈；8-三爪摆动盘

Figure 1. The system of abrasion testing machine for swashplate bearing

2. 基于理想模型的运动仿真

2.1. 仿真分析前处理

“理想模型”即：只考虑试验轴承及三爪摆动盘，忽略6个杆端轴承，忽略液压缸，用三个坐标相同的点代替液压缸铰接位置，并通过连接命令将三个铰接点与三爪摆动盘进行一体化处理，忽略试验轴承内圈与导筒的装配间隙及轴承内外圈的同轴度。对模型进行理想化处理的主要目的是忽略除试验轴承以外的所有影响因素，以得到试验轴承在理想状态下的运动形式、液压缸的位移曲线，简化之后的理想模型如图3所示。

Figure 2. The load and motion form of swashplate bearing

P11-1#液压缸与三爪摆动盘的铰接位置；P22-2#液压缸与三爪摆动盘的铰接位置； P33-3#液压缸与三爪摆动盘的铰接位置

Figure 3. The ideal model of the swashplate testing machine

(1)

(2)

2.2. 液压缸位移曲线计算

(a) (b) (c)

Figure 4. The coordinate curve of the inner race p1 point

Table 1. The contact of the swashplate testing machine

3. 基于完整模型的运动仿真

3.1. 仿真分析前处理

“完整模型”即：综合考虑试验过程中三个液压缸及六个杆端轴承对试验轴承运动形式的影响，充分考虑轴承内圈与导筒的装配间隙，充分考虑轴承内外圈的同轴度，按照试验设备的实际情况设置各个接触副。将伸缩量曲线作为完整模型的运动输入条件，进行运动仿真。完整模型及接触副设置如图6表3所示。

3.2. 接触副对轴承运动的影响

3.3. 内圈与导筒装配间隙对轴承运动的影响

Figure 5. The displacement curve of the hydraulic cylinder

Figure 6. The complete model of the swashplate testing machine

(a)(b)

Figure 7. The coordinate curve of the inner race p1 point

Table 3. The contact of the swashplate testing machine

3.4. 内圈与外圈同轴度对轴承运动的影响

Figure 8. The movement trace of the bearing inner race

Figure 9. The coaxiality of the bearing inner and outer race

(a)(b)

Figure 10. The coordinate curve of the bearing inner race p1 point

4. 结论

1) 在不考虑轴承同轴度及内圈与导筒装配间隙的情况下，球铰试验设备多种复杂接触副的运动形式就会对试验轴承的运动形式产生影响，在试验过程中试验轴承内圈存在周向摆动的现象，与物理试验过程中轴承内圈沿导筒螺旋上下运动的现象相吻合；

2) 在同时考虑摆动磨损试验设备的接触副及轴承内圈与导筒的装配间隙时，轴承内圈在沿导筒做直线往复运动的同时，会随着三爪摆动盘的周期性摆动，与导筒发生周期性碰撞，且碰撞周期与摆动周期一致，结合试验轴承的直线往复运动，轴承内圈与导筒碰撞位置发出周期性异响，仿真分析结果与物理试验现象一致；

3) 在同时考虑摆动磨损试验设备的接触副及试验轴承同轴度时，轴承内圈运动规律同接触副对轴承运动造成的影响，轴承内圈在沿轴向直线往复运动的同时有小幅度的周向摆动，只是存在幅值上的差异。

Cause Analysis for Swashplate Bearing Abnormal Noise and Abnormal Motion[J]. 机械工程与技术, 2018, 07(03): 206-216. https://doi.org/10.12677/MET.2018.73026

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