Speed detection device and installation method thereof

Abstract

The invention discloses a speed detection device which comprises a disk and a sensor matched with the disc. The disc comprises a disc body and multiple magnetic parts arranged in the disc body, the disc body is internally provided with a magnetic induction passage, and the sensor comprises an inductive probe; the multiple magnetic parts are sequentially arranged on the disc body and form a magnetic field which changes periodically in the magnetic induction passage, and the inductive probe extends into the magnetic induction passage to cut magnetic induction lines of the magnetic field and outputs a periodical pulse signal. According to the speed detection device, the range of an inductive gap of the sensor is large, the eccentric magnitude is allowed to be large during installation, and assembly adaptability is good; rotating parts and driving parts do not exist in the interior of the speed detection device, saved spaces are all assigned to an electrical part to enhance capacity of resisting disturbance, and safety and reliability are achieved. The invention further provides an installation method of the speed detection 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...

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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

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