Speed ​​measuring device and installation method thereof

Abstract

The speed measuring device of the present invention includes a magnetic disk and a sensor that cooperates with the magnetic disk. The magnetic disk includes a disk body and several magnetic parts arranged in the disk body. A magnetic induction channel is opened in the disk body, and the sensor includes an induction probe; several magnetic parts are sequentially arranged on the disk body and A periodically changing magnetic field is formed in the magnetic induction channel, and the induction probe extends into the magnetic induction channel to cut the magnetic induction lines of the magnetic field, and outputs a periodic pulse signal. The sensing gap range of the sensor in the speed measuring device of the present invention is large, the allowable eccentricity is large during installation, and the assembly adaptability is good. And there are no rotating parts and transmission parts inside the speed measuring device, and the saved space is all allocated to the electrical part, which is used to strengthen the anti-interference ability, which is safe and reliable. The invention also provides an installation method of the speed measuring device.

Description

technical field [0001] The invention belongs to the field of locomotive speed measurement, in particular to a speed measurement device and an installation method thereof. Background technique [0002] At present, in the field of railway locomotive speed measurement, photoelectric speed sensors with 200 pulses per circle or non-contact Hall speed sensors with 80 pulses per circle are mainly used. [0003] Among them, the photoelectric speed sensor contains a transmission bearing inside. Under the compound conditions of locomotive vibration, impact, high speed and long-term operation, the wear of the transmission bearing limits the overall reliability of the sensor; on the other hand, the sensor passes through the shaft. The square tenon at the end of the locomotive and the square hole sleeve at the end of the locomotive axle are connected to achieve transmission and speed measurement. Factors such as the matching size, lubrication state, and relative axial movement of the two...

AI Technical Summary

Problems solved by technology

[0003] Among them, the photoelectric speed sensor contains a transmission bearing inside. Under the compound conditions of locomotive vibration, impact, high speed and long-term operation, the wear of the transmission bearing limits the overall reliability of the sensor; on the other hand, the sensor passes through the shaft. The square tenon at the end of the locomotive and the square hole sleeve at the end of the locomotive axle are connected to achieve transmission and speed measurement. Factors such as the matching size, lubrication state, and relative axial movement of the two connecting parts determine the wear between the two. If there is a slight abnormality, the wear will increase sharply. , rapidly lowering the overall reliability level or failing

[0004] The Hall speed sensor outputs the speed signal on the outer ring of the radial non-contact induction speed measuring toothed disc. The installation method of the shaft end is completely different from that of the photoelectric speed sensor. The sensing distance between the tooth top of the speed measuring tooth disc and the end face of the sensing head is 0.5mm -2.0mm, the sensor gap of the speed measurement is small, and the assembly adaptability is poor

Images