KCM130型可控冲击矛矛头自锁机构的运动仿真分析  

Kinematic Simulation Analysis on a Self-locking Mechanism of Model KCM130 Controllable Impact Spear Head

作　　者：王文龙[1] 曹品鲁[1] 高科[1] 刘建林[2] 

机构地区：[1]中原油田钻井工程技术研究院 [2]吉林大学建设工程学院

出　　处：《工程机械》2008年第8期28-32,共5页Construction Machinery and Equipment

摘　　要：KCM130型可控冲击矛是一种用于非开挖铺设浅埋、小直径、短距离地下管线的气动穿孔工具,其穿孔方向是由矛头的偏转角和转动角决定的。试验证明,通过在地表回拉、转动供气胶管可以调整冲击矛的穿孔方向,实现曲线穿孔或直线穿孔以及二者之间的转换。但冲击矛穿孔过程中,矛头在外力作用下其偏转方向会自行改变,失去人为控制。即冲击矛不能锁定矛头的既定偏转方向,使其运行轨迹发生偏离。因此,必须设计矛头自锁机构,在不影响正常调整矛头偏转方向的前提下实现对矛头偏转方向的锁定。根据冲击矛矛头偏转的工作原理分析了矛头不能自锁的原因,改进了矛头控向机构,在偏心套两侧设置两个卡块,由此实现锁定矛头的偏转方向。利用SOLIDWORKSCOSMOSMotion进行了自锁机构运动仿真,验证了设计的可行性,为实现矛头自锁提供参考。Model KCM130 controllable impact spear is a kind of pneumatic piercing tool used in trenchless laying for small depth, small diameter and short distance underground pipeline. Its piercing direction is determined by deflexion angle and rotation angle of the head. Test shows that the piercing direction of an impact spear can be adjusted through surface pullback and rotating rubber air pipe to realize curve or straight piercing as well as switchover between them. But during piercing operation of an impact spear, the spear head may deviate by itself under outside force so the man-made control may be lost, i.e. the spear couldn't be locked on its designed direction so that its movement track is deviated. Hence, it is necessary to develop a self-locking mechanism to lock the spear head on its required direction while its rational direction adjustment is not influenced. According to work principle of the head direction changing, causes that the head can't fulfill self-locking are analyzed. Direction control mechanism of the head is improved. Two stop blocks are added on both sides of eccentric sleeve to implement direction locking of the head. Kinematic simulation of the self-locking mechanism is conducted with Solidworks CosMosMotion so the feasibility of the design is verified, which provides a reference for self-locking realization of the head.

关 键 词：可控冲击矛 矛头 自锁机构 

分 类 号：TU69[建筑科学—建筑技术科学]