阅读说明：本技术 一种空间不足场合试管夹持设备及方法 (Test tube clamping device and method for occasions with insufficient space ) 是由 孙启鹏 张立海 董飒英 王吉宁 王峰 苏桂香 袁圣磊 于 2019-07-18 设计创作，主要内容包括：一种空间不足场合试管夹持设备及方法,凸轮(4)旋转并与滚动轴承(5)间歇的接触使两个夹爪体(9)张开,复位模块(7)驱动张开后的夹爪体(9)闭合,凸轮(4)连接有齿轮轴(8),齿轮轴(8)上端连接有扇形感应件(2),扇形感应件(2)上对称设有两个通光口(14),通光口(14)将扇形感应件(2)分隔成两个扇形区域；当扇形感应件(2)的遮光边沿靠近夹爪感应器(3)时,夹爪感应器(3)输出上升沿信号,根据上升沿信号控制步进马达(11)的停止；当扇形感应件(2)的遮光边沿远离夹爪感应器(3)时,夹爪感应器(3)输出下降沿信号,根据下降沿信号控制步进马达(11)的停止。该试管夹持设备,使得同体积下夹紧力增大,采用扇形感应片,夹爪的开合信号明确,杜绝混乱,特别适用于空间不足,无法使用气动夹紧,又需要较大的夹紧力的场合。(A test tube clamping device and method for occasions with insufficient space are disclosed, wherein a cam (4) rotates and is in intermittent contact with a rolling bearing (5) to enable two clamping jaw bodies (9) to be opened, a reset module (7) drives the opened clamping jaw bodies (9) to be closed, the cam (4) is connected with a gear shaft (8), the upper end of the gear shaft (8) is connected with a fan-shaped sensing piece (2), two light through ports (14) are symmetrically arranged on the fan-shaped sensing piece (2), and the fan-shaped sensing piece (2) is divided into two fan-shaped areas by the light through ports (14); when the shading edge of the fan-shaped induction piece (2) is close to the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a rising edge signal, and the stop of the stepping motor (11) is controlled according to the rising edge signal; when the shading edge of the fan-shaped induction piece (2) is far away from the clamping jaw inductor (3), the clamping jaw inductor (3) outputs a falling edge signal, and the stop of the stepping motor (11) is controlled according to the falling edge signal. This test tube centre gripping equipment for with the clamp force increase under the volume, adopt fan-shaped response piece, the signal of opening and shutting of clamping jaw is clear and definite, stops the confusion, and the specially adapted space is not enough, can't use the pneumatic clamp tight, needs the occasion of great clamp force again.)