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Shock and vibration from the rocket launch brought high demands for the design of space robot. This article describes the simulation and design optimization on a six degree of freedom space manipulator we had designed for space robot. Firstly, the article describes the configuration design, Denavit-Hartenberg parameters, and so on. Then, based on the mechanical requirements of rocket to payload, mechanical...
Grab structure performance will directly affect the reliability of the crane work. In this paper, we completed the structural design of the tower crane grab components, and analyzed the grab by finite element method in the most dangerous conditions. So The stress, strain and deformation value of the condition are obtained. Finding out the position of the grab most prone to damage and the defects of...
Before the soldiers or police take actions, a fast and real-time detection in dangerous places, such as indoor, passageway and underpass, can both guarantee the soldiers' safety and increase the battle's accuracy, so it is significative and necessary to design a kind of scout robot which is able to arrive in the target region to acquire the message fast by the ways of thrown, shot or airdrop. This...
According to actual engineering of a highway neighborhood tunnel, The surrounding rock stress field monitoring of bench cut method has done and the field monitoring data has been compared with numerical simulation results. The result shows: The surrounding rock stress release with time in excavation, every construction step can effect the stress of surrounding rock and lining. The construction of...
The surrounding rock stress field monitoring of sequential mining method has done and the field monitoring data has been compared with numerical simulation results. The result shows: Surround rock stress changes violently when the distance from monitoring section to the lower bench is less than a tunnel diameter, when the distance is more than a tunnel diameter, the surround rock presents rheological...
According to actual engineering of a highway tunnel, this paper studies the tunnel stability without support and with support by Poynting-Thomson model. The transformation law of the stress with time of the bolt-shotcrete support is discussed. The results show that theoretical calculations and field monitoring data are in comparative agreement. The stress of the surrounding rock release with time...
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