DEVICE FOR DETECTING LOOSENESS IN RAIL FASTENING EQUIPMENT

PURPOSE:To automatically detect the looseness in a rail fastening unit by preparing a storage device for detection sensor outputs of bolt fastening pressure in the rail fastening unit, mounting a data processor on a truck, sending/ receiving the data, and comparing the pressures with reference values. CONSTITUTION:In respective rail fastening units the bolt fastening pressure is detected by a pressure sensor 12, the pressure data is stored by an auxiliary storage device 16 of a tag 10, and it is transferred to a CPU 18. The CPU 18 compares the pressure data with preset fastening pressure reference values to judge whether or not it is normal, and then transfers the result as well as address information and pressure data to the device 16. While a truck is running, a controller thereon issues an address-designated timing signal and the CPU 18 reads respective data in the device 16 after confirming the address and transmits the data through an input/output device 19. After the controller receives it, it indicates them on a display part and stores them in a data processing part. Thus, while the truck is running, the judging data is taken in the controller, resulting in automatic detection.