AEROSPACE SHANGHAI, Volume. 41, Issue 3, 167(2024)
Design Optimization and Experimental Verification of Trundle Bearing Mechanisms for Spacecrafts
Figures & Tables(19)
Fig. 1. Solar-oriented driving mechanisms for small and medium-sized spacecrafts at home and abroad
Fig. 2. Trundle bearing mechanisms for space stations at home and abroad
Fig. 3. Working principle of the trundle bearing mechanism in single pattern
Fig. 4. Design scheme and mechanism principle of the trundle bearing assembly
Fig. 5. Roller-rail kinematic pairs between the trundle bearing assembly and rail
Fig. 6. Schematic diagram of the roller-rail kinematic pair at Roller A
Fig. 8. Status of the trundle bearing assembly and rail before and after clamping
Fig. 9. Principle of the vacuum circular rail test and picture of the test equipment
Table 1.
Parameters of the schematic diagram of Fig.6 View tableView in ArticleTable 1.
Parameters of the schematic diagram of Fig.6 参数名称 参数含义 滚轮A靠近导轨小圈一侧的滚轮半径 滚轮A靠近导轨大圈一侧的滚轮半径 与滚轮A接触位置的导轨小圈半径 与滚轮A接触位置的导轨大圈半径 滚轮A转动角速度 导轨转动角速度 滚轮A靠近导轨小圈一侧的滚轮外圈转动线速度， 滚轮A靠近导轨大圈一侧的滚轮外圈转动线速度， 与滚轮A接触位置的导轨小圈转动线速度， 与滚轮A接触位置的导轨大圈转动线速度，
Table 2.
Parameters of the schematic diagram of Fig.7 View tableView in ArticleTable 2.
Parameters of the schematic diagram of Fig.7 参数名称 参数含义 滚轮A组件回转轴心 滚轮A宽度方向中心点 滚轮A轴向宽度，25 mm 滚轮A与导轨面接触线长度 滚轮A圆锥面倾斜角 滚轮A组件回转轴心与滚轮A回转轴线的距离 滚轮A组件回转轴心与导轨回转轴线的距离 滚轮A回转轴线与接触面的距离 滚轮A靠近导轨小圈一侧的滚轮半径 滚轮A靠近导轨大圈一侧的滚轮半径 与滚轮A接触位置的导轨小圈半径 与滚轮A接触位置的导轨大圈半径
Table 3.
Contact point radius ratios and roll-slip ratios of the conical roller-rail kinematic pairs View tableView in ArticleTable 3.
Contact point radius ratios and roll-slip ratios of the conical roller-rail kinematic pairs 位置 部件名称 接触点半径比
（大径/小径）
滚滑比s 滚轮A处 导轨 1.028 82 0 滚轮A 1.028 82 滚轮B处 导轨 1.030 38 0 滚轮B 1.030 38 滚轮C处 导轨 1.066 43 0 滚轮C 1.066 43
Table 4.
Effects of the roller structure dimension error on the roll-slip ratio View tableView in ArticleTable 4.
Effects of the roller structure dimension error on the roll-slip ratio 位置 项目名称 理论值 最大值 最小值 滚轮A处 滚轮半径比 1.028 82 1.028 99 1.028 73 滚滑比 0 -1.7×10-4 8.7×10-5 滚轮B处 滚轮半径比 1.030 38 1.030 53 1.030 27 滚滑比 0 -1.5×10-4 1.1×10-4 滚轮C处 滚轮半径比 1.066 43 1.066 55 1.066 28 滚滑比 0 -1.1×10-4 1.4×10-4
Table 5.
Effects of the rail position error on the roll-slip ratio View tableView in ArticleTable 5.
Effects of the rail position error on the roll-slip ratio 位置 项目名称 导轨位置偏差/mm -1.0 -0.5 +0.5 +1.0 滚轮A处 导轨半径比 1.028 87 1.028 85 1.028 80 1.028 78 滚滑比 4.9×10-5 2.9×10-5 -1.9×10-5 -3.9×10-5 滚轮B处 导轨半径比 1.030 43 1.030 41 1.030 35 1.030 33 滚滑比 4.9×10-5 2.9×10-5 -2.9×10-5 -4.9×10-5 滚轮C处 导轨半径比 1.066 54 1.066 49 1.066 37 1.066 32 滚滑比 1.0×10-4 5.6×10-5 -5.6×10-5 -1.0×10-4
Table 6.
Status of the specimens of the life test View tableView in ArticleTable 6.
Status of the specimens of the life test 参试产品 产品状态 导轨圆盘试件 除结构尺寸外，其余与真实导轨状态一致 圆柱形滚轮组件 外圈面镀固体润滑膜，为圆柱形，带圆弧 圆锥形滚轮组件 外圈面镀固体润滑膜，为圆锥形，带圆弧
Table 7.
Operating conditions of the life test View tableView in ArticleTable 7.
Operating conditions of the life test 工况 名称 导轨转速/ (r·min-1) 运动副滚滑比 目标导轨圈数/万圈 参试试件 工况1 5 0.129 22.6 导轨圆盘+ 圆柱形滚轮 工况2 5 理论值0 22.6 导轨圆盘+ 圆锥形滚轮
Table 8.
Processing product pictures in No.2 operating condition test View tableView in ArticleTable 8.
Processing product pictures in No.2 operating condition test 导轨转动 圈数/万圈 导轨试件 照片 滚轮试件 照片 1.0 5.5 10.8 17.6 22.7
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Decai YANG, Jianhui LI, Chuankun QU, Daxing HUANG, Zhifei MA, Zhiyi WANG, Zhiyuan QIAN. Design Optimization and Experimental Verification of Trundle Bearing Mechanisms for Spacecrafts[J]. AEROSPACE SHANGHAI, 2024, 41(3): 167
Paper Information
Category: Innovation and Exploration
Received: Jun. 7, 2024
Accepted: --
Published Online: Sep. 3, 2024
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