LOAD TORQUE MEASURING DEVICE FOR ELECTRIC SWITCH MACHINE AND SETTING METHOD FOR LOAD TORQUE DECISION VALUE TO THE MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To make a load torque measuring device easy to be carried to a job site and exactly measure load torque of an electric switch machine by performing a torque conversion from values of driving current and voltage of a motor which are measured during a conversion and storing or displaying the torque conversion as dynamic load torque. SOLUTION: A load torque measuring device 1 is formed into a size that a maintenance worker of a railroad can carry the device 1 and a main body of the load torque measuring device 1 is constituted of a sensor part 10 and a processing part 20. This sensor part 10 includes a voltage circuit 11 for measuring driving current of a motor and a current measuring circuit 12 for measuring driving voltage of the motor. The processing part 20 is constituted of an arithmetic part 21 constituted of a CPU as a center. This arithmetic part 21 performs a prescribed arithmetic processing by using a system program, a conversion table and a working table stored in a storage part 22. As a result, dynamic load torque of an electric switch machine can be easily and exactly measured.