| 摘要 |
PROBLEM TO BE SOLVED: To simply detect an abnormal pneumatic pressure by guiding a detecting rod having one end rockably mounted on the rocking center line of a hydraulic suspension cylinder with an accelerator part by a bracket mounted on the hydraulic suspension cylinder, and detecting a prescribed position of the detecting rod on the bracket according to its elongation. SOLUTION: One end of a detecting rod 15 is rockably connected to the position fitted to the centerline of a mounting pin 9 for a hydraulic suspension cylinder 7 on the bracket 2a of an accelerator part 2. The guide hole of a band-like bracket 16 mounted on a cylinder body so that the detecting rod 15 is arranged in parallel to the centerline of the hydraulic suspension cylinder 7 is inserted to the other end side. In the detection of the puncture or abnormal pneumatic pressure state of a tire from the small rocking rotation of the accelerator part 2, since it can be measured in the position of the mounting pin 9 for the hydraulic suspension cylinder 7 distant from the center of the accelerator part 2, an inexpensive general limit switch is usable, and high detecting precision can be provided.
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