Separate elastic temperature sensor

Abstract

The invention relates to a separate elastic temperature sensor, which includes a temperature sensor probe and an installation structure, the installation structure includes a hollow protection tube, a rear limit tube and a telescopic spring; the rear limit tube, the telescopic spring and the temperature sensor probe are installed in the hollow protection Inside the tube, the rear limit tube and the outer limit portion of the temperature sensor probe are respectively in contact with the upper limit portion in the hollow protection tube and the built-in tube. After assembly, the spring is in a slightly compressed state. When installed and used, the probe can be compressed by the spring so that it can be tightly installed on the bottom of the temperature measurement hole. Screw the probe end of the hollow protective tube into the mounting hole on the side of the motor end cover. When replacing online, it is not necessary to take out the hollow stainless steel protective tube with a long space, and directly install the probe and its protection and installation parts, and the replacement can be performed directly without the need for the motor to drop off; The protective structure makes the temperature sensor have the functions of dustproof and waterproof, and the protection level is high.

Description

technical field [0001] The invention relates to a temperature sensor, in particular to a sensor installed near the upper bearing of a traction motor to monitor the temperature of the motor bearing. Background technique [0002] At present, the traction motors of simple EMUs are required to be equipped with bearing temperature sensors. The bearing temperature sensors used in the prior art are mostly used near the motor end cover (or bearing cover), and a relatively simple short probe plug-in type is installed. Temperature Sensor. [0003] The existing temperature sensor installation method can only be used for smaller motors, or it needs to be installed near the bearing on the end face of the motor, which is more suitable for frame-suspended motors; it cannot meet the installation requirements of bearing temperature sensors for some EMU body-suspended traction motors . As we all know, the operating conditions of the motors installed under the car body are relatively bad. Th...

AI Technical Summary

Problems solved by technology

[0003] The existing temperature sensor installation method can only be used for smaller motors, or it needs to be installed near the bearing on the end face of the motor, which is more suitable for frame-suspended motors; it cannot meet the installation requirements of bearing temperature sensors for some EMU body-suspended traction motors

As we all know, the operating conditions of the motors installed under the car body are relatively harsh. The traction motors of some EMU models are affected by their suspension methods. The bearing temperature sensor can only be installed from the side of the end cover. If the temperature sensor probe is long, the required installation The space is large, and the installation space of the car body is limited, so it cannot meet the operational needs of online replacement

After a failure occurs, the plug-in temperature sensor cannot be replaced, and the motor needs to be dropped off to replace the temperature sensor. The structure and installation method of this temperature sensor greatly increases the maintenance and repair costs of the motor, and brings considerable difficulties to the user.

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