Self-power wheel shaft detection apparatus
A detection device, self-powered technology, applied in electrical components, generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve problems such as low reliability and narrow effective bandwidth, and achieve reliable performance. High performance, low energy loss and controllable deformation
Active Publication Date: 2017-12-22
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology
In order to solve the power supply problem of the train shafting real-time monitoring system, scholars at home and abroad have proposed a micro-sized piezoelectric generator that can be integrated with the monitoring system, but the existing piezoelectric generator is periodically excited and the piezoelectric sheet is subjected to alternating tension. Compressive stress, so the reliability is low and the effective bandwidth is narrow
Method used
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Embodiment Construction
[0009] The axle a is installed on the frame c through the bearing b, the end of the shell c1 on the frame c is installed with the end cover d through the screw; the end of the axle a is installed with the bushing with the ring groove f1 through the pressure plate e and the screw f, one end of the sleeve f is set on the wheel shaft a and leans against the inner ring of the bearing b; the two side walls of the ring groove f1 of the sleeve f are equipped with excitation magnets q evenly distributed by screws, the two shaft sections The angle between two adjacent excitation magnets q in the upper circumferential direction is Q=180° / N, where N is the number of excitation magnets q installed on the side wall of the ring groove; the housing c1 of the frame c A set of piezoelectric vibrator h and reed i are installed on the boss via pressure block g and screws, and pressure plate j, a set of suspension magnet k and excited magnet q' are installed on both sides of the free end of reed i...
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The invention relates to a self-power wheel shaft detection apparatus, and belongs to the technical field of detection. The self-power wheel shaft detection apparatus is characterized in that a wheel shaft is arranged on a vehicle frame, and an end cap is arranged on the housing of the vehicle frame; a shaft sleeve with a ring slot is arranged at the end portion of the wheel shaft, and one end of the shaft sleeve sleeves the wheel shaft and is abutted against an inner ring of a bearing; the same number of excitation magnets are uniformly distributed on two side walls of the ring slot of the shaft sleeve; a group of piezoelectric oscillators and a reed are arranged on a boss of the housing of the vehicle frame; two sides of the free end of the reed are each provided with a pressure plate, a group of suspension magnets and an excited magnet which is arranged at the end portion of the pressure plate; attractive force is formed between the excited magnet and the excitation magnets; each piezoelectric oscillator is formed through bonding of a substrate and a piezoelectric patch, and then forms an arc cantilever beam; the piezoelectric oscillators are symmetrically arranged at two sides of the reed; a pad is connected between the substrate of the piezoelectric oscillator adjacent to the reed and the reed in a pressed manner, and a separation pad is connected between the fixed ends of the adjacent piezoelectric oscillators in a pressed manner; suspended magnets are arranged at the end portions of the piezoelectric oscillators; and the like poles of the suspended magnets and the suspension magnets are arranged in an opposite manner.
Description
technical field [0001] The invention belongs to the technical field of rail transit monitoring and piezoelectric power generation, and in particular relates to a self-powered wheel shaft detection device. Background technique [0002] Rail train wheelset is the key to ensure the safe operation of rail vehicles. In the past, the health status of key components such as rail vehicle wheel trains was guaranteed by regular maintenance and overhaul; with the continuous improvement of vehicle operating speed and the improvement of people's safety awareness, the research on real-time online monitoring technology of wheel sets during vehicle operation has received a lot of attention. Widely concerned by domestic and foreign scholars, the required monitoring elements include shaft and bearing temperature, rotational speed, dynamic stiffness, wear and vibration, and many other aspects. For the wheel set monitoring system, the ideal method is to install various sensor monitoring system...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02N2/18
CPCH02N2/183
Inventor 温建明钱前程费翔
Owner ZHEJIANG NORMAL UNIVERSITY