The invention relates to a high-precision positioning circular telescopic arm structure for engineering machinery, and belongs to the technical field of engineering machinery. The high-precision positioning circular telescopic arm structure for engineering machinery comprises a bearing chamber and a telescopic inner cylinder which is sleeved in the bearing chamber and slides back and forth relative to the axis direction of the bearing chamber, and the telescopic inner cylinder comprises an inner cylinder body, an end socket, convex keys and a compression ring, three sets of convex keys parallel to the axis are uniformly arranged on the outer wall of the inner cylinder body along the outer circumference of the inner cylinder body, the bearing chamber comprises a bearing seat and a bearing cylinder which are integrally connected, sealing cover structures are respectively arranged at two ends of the bearing seat and the bearing cylinder, and key grooves matched with the three sets of convex keys are formed in the inner walls of shaft holes of the bearing seat and the bearing cylinder. The circular section design is adopted, the high torsion resistance is achieved, the movement precision is guaranteed through the telescopic inner cylinder and the bearing chamber structure, the influence of human factors is reduced, the quality and consistency of products are improved, the bearing chamber is sealed, the lubricating effect is improved, loss of quick-wear parts is reduced, the structure is compact, and the cost is low. The small size is beneficial for reducing equipment weight and saving materials.
本发明涉及一种工程机械用高精度定位圆形伸缩臂结构,属于工程机械技术领域,包括轴承室和在套设于轴承室内部且相对轴承室轴线方向往复滑动的伸缩内筒,伸缩内筒包括内筒体、封头、凸键和压环,内筒体的外壁上沿内筒体外圆周均匀设置有三组与轴线平行的凸键,轴承室包括一体连接的轴承座和轴承筒,轴承座和轴承筒的两端分别设置有封盖结构,轴承座和轴承筒的轴孔内壁上设有与三组凸键相匹配的键槽;本发明采用圆形截面设计具有较高的抗扭能力,运动的精度由伸缩内筒体和轴承室的结构来保证,降低了人为因素的影响,有利于提高产品的质量和一致性,轴承室密封增加润滑效果降低易损件的损耗,结构紧凑,体积小有利于降低设备重量,节约材料。
High-precision positioning circular telescopic arm structure for engineering machinery
一种工程机械用高精度定位圆形伸缩臂结构
2021-10-08
Patent
Elektronische Ressource
Chinesisch
Multi-stage telescopic mechanism and engineering machinery
Europäisches Patentamt | 2022
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