Study on a clamping device of leveling equipment mounted on jacket

This paper proposes a novel clamping device for leveling equipment mounted on offshore oil platform jacket,which solves the problem of leveling equipment clamping lifting force of more than 2000 tons.The main features are that lifting force transmits to clamp claw through wedge force amplifier,embed the teeth of claw into the pile,and the embedded depth increases with the lifting force,resulting in a gravitational self-locking function.This theoretical model of clamping device was established,and the force and material characteristic were analyzed,and the feasibility of the theoretical model was verified by thin shell elastic-plastic stability theory and thin-walled structures theory.An experimental prototype of clamping device was produced to test gravity self-locking function and bearable leveling force.Compared with the theoretical model and the experimental results,it proved that the embedded clamping devices have gravitational self-locking function and can meet the need of actual leveling equipment.

水田复式整地机自动调平装置的设计与研究

为解决传统水田复式整地机需手动控制、驾驶员工作强度大、工作效率低等问题,研制了水田复式整地机的自动调平控制系统,适用于水田粗整地、整平地。采用水平传感器获取复式整地机机架的倾角姿态,控制器为STC12C5A60S2型芯片,通过调节脉冲宽度控制三位四通电磁阀,实现液压油流向的变换,用安装在整地机侧面的调平液压油缸实现整地机机架的自动调平。对自动调平控制系统进行了田间试验验证表明,该系统满足水稻插秧的农艺要求。