GrabCAD 模型信息
Rotary drums for RASSOR · 模型 267798
Rotary drums for RASSOR Very simple, reliable and lightweight construction with sufficient toughness that will work well in harsh and dusty environments. Composed of shaft, sides, partition and spiral coat. Material: I would use carbon abrasionresistance steel. One rotational drum it does two spiral section, entrance to section rotated of 180 degrees. Both drums are mounted on the shaft with a 90 degree between entrance. Optimal spiral construction them 1,2 – 1,3 turn, depending on its initial radius. ATTENTION! PRECISION ON THIS PARAMETER HAS A SIGNIFICANT EFFECT ON THE EFFICIENCY OF THE DEVICE, ANOTHER PROPORTION IS NOT EFFECTIVE. End of the inner wall (of spiral) it is cut into ribbons. Ribbons make little vibration and they prevent clogging of the input and output channels. The inlet duct has walls on the sides, that prevent material from slipping away. The inlet opening of the drum has the same cross section as the feed channel and is in the same line, which substantially reduces the forces exerted on the drum and arm of the machine when picking up the material. Cross - section input channel it is given section width and climb spiral. The pitch of the spiral must be optimalized, according to the fraction of the material to be processed. It is advantageous to provide all knives with teeth. The tooth grooves help the side section, sink into the material. Computer simulations are as perfect, as the input data. The solution to this task is not simple. Only theoretical models without practical tests are insufficient! The above statements are verified by a practical test of the device model and material. Produceability and funcionality illustratedon the attached video real model. Technical parameters for one drum: In copmliance with the maximum values of the requirement. Maximum total width of scoops engaged at any given time: 175 mm Maximum bucket drum mass: 5 kg Maximum bucket drum diameter: 450 mm Maximum bucket drum length: 360 mm A minimum volume of regolith captured: 17.6 liters Achieved parameters for one drum: Bucket drum mass: 4,98 kg Bucket drum diameter: 450 mm Bucket drum length: 360 mm The minimum volume captured in the spiral drum shell desing 1,25 turn: Theoretical volume - 38 liters material, the actual final content of the drum (65-68%) when passing through the terrain and partial material loss will be 24,7 – 25,8 liters material. ATTENTION! EFFICIENCY IS REDUCING AT LOWER GRAVITATION, EFFICIENCY IS INCREASING AT HIGHER ...
- 格式
- STL、STEP / IGES、Rendering、Other
- 分类
- Aerospace、Construction、Robotics
- 标签
- nasadrumchallenge
- 数据更新
- 2026-09-22T05:47:20Z