| 摘要 |
PURPOSE:To provide sure sensing even in improper assembled condition by putting a sensing pin with a greater width than the gap at the mating surfaces of a pair of two-divided cylinders, in contact with at least three points on the periphery of the endfaces of said two-divided cylinders, and therethrough sensing the level. CONSTITUTION:when an actuator 7 sinks, an L-shaped member 10 and a sensing pin 5 sink also, in case a cotter 2 is in normal condition, the sensing pin 5 contacts the cotter 2, and a spring 17 deflects. The abovementioned sensing pin 5, a sensing shaft 15, and dogs 18a, 18b stop, and said L-shaped member 10 and sensors 19a, 19b sink to stop their lower limit to deacture the sensors 19a, 19b. In case there is no cotter 2 or it is hopping out, one of the sensors 19a, 19b is actuated to cause judgement 'defective'. The actuator 7 is lifted, and another actuator 20 is rotated to turn a rotary shaft 13 and said sensing pin 5 120 deg. with the aid of a timing belt 23, followed by a sink to servo judgement whether the cotter 2 is in normal condition. |
