Self-adjusting mechanism for gearbox shaft gear rotating speed sensor

Abstract

The invention relates to a self-adjusting mechanism for a gearbox shaft gear rotating speed sensor. The self-adjusting mechanism comprises a mounting sleeve and a limiting mechanism mounted on the mounting sleeve, wherein the mounting sleeve is provided with a cavity for accommodating the rotating speed sensor, when the rotating speed sensor is in contact interference with a detection target wheel, the rotating speed sensor can move away from the detection target wheel in the cavity in the axis direction of the mounting sleeve, and the limiting mechanism used for making contact with the rotating speed sensor and preventing the rotating speed sensor from moving close to the detection target wheel. By mounting the rotating speed sensor on the self-adjusting mechanism, the rotating speed sensor and the detection target wheel can be automatically adjusted to keep a reasonable distance, measurement faults caused by the unreasonable distance between the sensor and the detection target wheel are avoided, the abrasion of the sensor is reduced, meanwhile, the precision manufacturing requirement on adjacent equipment such as shaft teeth is lowered, and machining and manufacturing are convenient.

Description

technical field [0001] The invention relates to the field of transmission variable-speed walking systems, in particular to a self-adjusting mechanism for a transmission shaft tooth rotational speed sensor. Background technique [0002] At present, the measurement of the speed of the gearbox shaft teeth is by installing a non-contact speed sensor and a speed detection target wheel on the gearbox (the target wheel is fixed on the shaft teeth and rotates with the shaft teeth). As the target wheel rotates, the magnetic field of the sensor changes. The speed sensor calculates the target wheel speed by detecting the frequency of the induced magnetic field change per unit time, and then calculates the shaft tooth speed based on the target wheel speed. [0003] In order to ensure the accuracy and stability of rotational speed measurement, it is necessary to ensure a reasonable detection distance between the sensor and the target wheel. If the distance is too far, the magnetic field...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a self-adjusting mechanism for the gearbox shaft tooth speed sensor to solve the problem that the distance between the sensor and the target wheel is too far in the related art, the sensor induced magnetic field does not change significantly, and the measurement signal is easily lost; the distance between the sensor and the target wheel is too close The target wheel is prone to interference, causing damage to parts

Images