DE202023102544U1 - Apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relief process - Google Patents

Abstract

Device for monitoring the rail temperature and the internal stress of a steel rail during a stress relief process, comprising a steel rail, a measuring device, a data transmission device and an overall control module, characterized in that the network topology structure between the data transmission device and the overall control module is a bus connection, the measuring device being connected to the steel rail for measuring data of the steel rail, the measuring device comprising or consisting of a temperature strain gauge, an internal stress strain gauge, an amplification device and an adsorption device.

Description

TECHNICAL AREA

The present utility model relates to the technical field of mechanical engineering, more particularly to an apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relieving process.

STATE OF THE ART

The real-time temperature of the steel rail is used to judge the operation using the drum method or the steel rail elongation and drum release method according to the real-time temperature assessment of the steel rail. The elongation of the steel rail must be calculated from this data. The real-time temperature of the steel rail is mostly measured by an attached rail thermometer, and the data is manually recorded and aggregated. During the measurement process, the surveyors need to measure along the steel rail once every interval, so measuring the whole data takes much time and effort of the surveyors.

For the internal stress state of the steel rail, the displacement of the steel rail is mostly observed manually by temporary observation points and optical measuring instruments. During operation, a temporary observation point is arranged every 50-100 meters. A professional technician must be deployed at a single observation point to measure and record data. The final data is aggregated to the rail collider operations team via walkie-talkie. By comparing whether the displacement of the temporary observation point increases proportionally, it is judged whether the stress relieving operation of the steel rail satisfies the requirements.

With the growing gap in jobs in rail transport construction, the willingness of personnel to use complex and cumbersome measurement methods continues to decrease. There is an urgent need to design a new portable measurement tool that operates unmanned during the measurement process in order to improve operation efficiency and reduce the labor resources required for measurement.

CONTENTS OF THE PRESENT UTILITY MODEL

The purpose of the present utility model is to design an unmanned portable measuring device for the time-consuming and effort-consuming problem of repetitive work and data aggregation in measuring the steel rail temperature and the internal stress of the steel rail during the stress relieving process of the urban rail seamless line. This realizes the automatic measurement and real-time aggregation of data on steel rail temperature and steel rail internal stress during the steel rail stress release process, improving the automation and unmanned level of the whole operation process.

Device for monitoring the rail temperature and the internal stress of a steel rail during a stress relief process is designed, comprising a steel rail, a measuring device, a data transmission device and an overall control module, wherein the network topology structure between the data transmission device and the overall control module is a bus connection, the measuring device connected to the steel rail to the Measuring data of the steel rail, wherein the measuring device comprises or consists of a temperature strain gauge, an internal stress strain gauge, an amplification device and an adsorption device.

It is preferable that the temperature strain gauge is used to convert a real-time temperature of the steel rail into an electrical signal, so that the real-time temperature of the steel rail is obtained through the processing of the internal chip and sent to the overall control module through the data transmission module.

It is preferably designed that the internal stress strain gauge is used to convert a real-time state of the internal stress of the steel rail into an electric signal, so that the real-time state of the internal stress of the steel rail obtained through the processing of the internal chip and through the data transmission module to the overall control module is sent.

Preferably, the main body of the adsorbing device is a magnet fixed in the measuring device to fix the measuring device to the rail waist of the steel rail.

Preferably it is envisaged that the reinforcing device is an adjustable bolt used to apply pressure to the strain gauge strip of temperature and strain gauge of internal stress to better match the rail waist portion of the steel rail, while supporting the adsorption device to fix the gauge to the steel rail.

1. 1. In der Vorrichtung werden die Schienentemperatur und die innere Spannung der Stahlschiene durch den Sensor gemessen, wodurch die Betriebsmenge während des Messvorgangs effektiv reduziert und die Messeffizienz verbessert wird.
2. 2. Die Datenübertragung zwischen Sensoren über Bluetooth ersetzt die ursprünglich manuell gemeldete Aggregationsarbeit, wodurch die Aktualität der Datenübertragung verbessert wird.
3. 3. Während der Messung ist keine zusätzliche Bedienung durch den Bediener erforderlich, wodurch der Arbeitsaufwand während des Betriebs reduziert wird.

Compared to the prior art, the present utility model has the following advantages:

1. 1. In the device, the rail temperature and the internal stress of the steel rail are measured by the sensor, effectively reducing the amount of operation during the measurement process and improving the measurement efficiency.
2. 2. Data transmission between sensors via Bluetooth replaces the aggregation work that was originally reported manually, which improves the timeliness of data transmission.
3. 3. No additional operation is required by the operator during measurement, reducing labor during operation.

character list

• 1 Fig. 12 is a front view of an apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relieving process according to the present utility model;
• 2 Fig. 12 is a plan view of an apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relieving operation according to the present utility model;
• 3 Fig. 14 is a flow chart of an apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relieving operation according to the present utility model;
• 4 Fig. 12 is a network topology diagram of an apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relieving operation and an overall control module;

Reference List

1-1

temperature strain gauges,

1-2

internal stress strain gauges,

1-3

adsorption device,

1-4

reinforcement device.

DETAILED DESCRIPTION

Embodiment 1 Installation method of a device for monitoring the rail temperature and the internal stress of a steel rail during a stress relieving operation

Before installing the device, the operator must measure and zero the temperature strain gauge and internal stress strain gauge to ensure their correct working performance before installing the measuring device.

During the installation process, the operator places a device for monitoring the rail temperature and the internal stress of a steel rail during a stress-releasing process on each side of the steel rail of the point to be measured, with a single device adsorbed by a magnet on the rail waist of the steel rail. The strain gauges at the same time to measure the data must be additionally fixed by the fixing device to ensure that the strain gauges can be close to the steel rail.

After the device installation is completed, the operator needs to debug the Bluetooth module of the data transmission device to ensure that it can communicate with the overall control module normally. It is ensured that the device installation can be carried out to the next installation point after the whole device works properly.

Embodiment 2: Apparatus for monitoring rail temperature and internal stress of a steel rail during stress relieving operation and method therefor

The installation of the entire device is completed according to the embodiment. When the steel rail needs to be stretched, the real-time rail temperature of each point of the steel rail is obtained by the overall control module to calculate the real-time rail temperature of the entire long rail strip by averaging. After elongation of steel rail = 0.0118 × (locking rail temperature - real-time rail temperature) × length of stress-releasing steel rail. During the subsequent stress release process, the operator can measure the performance of the rail collision end set according to the internal tension state of the steel rail displayed on the overall control module. When the internal stress state of the steel rail meets the locking requirements, it can be judged that the stress-releasing process of the long rail strip meets the requirements, which is suitable for the subsequent disassembly of the steel rail locking and measuring device.

The above is only a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Any equivalent replacement or change made by a technician skilled in the technical field according to the technical solution and novel idea of the present utility model within the technology disclosed by the present utility model should fall within the scope of the present utility model.

Claims (5)

Device for monitoring the rail temperature and the internal stress of a steel rail during a stress relief process, comprising a steel rail, a measuring device, a data transmission device and an overall control module, characterized in that the network topology structure between the data transmission device and the overall control module is a bus connection, the measuring device being connected to the steel rail for measuring data of the steel rail, the measuring device comprising or consisting of a temperature strain gauge, an internal stress strain gauge, an amplification device and an adsorption device. Apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relief process claim 1 , characterized in that the temperature strain gauge is used to convert a real-time temperature of the steel rail into an electrical signal, so that the real-time temperature of the steel rail is obtained through the processing of the internal chip and sent to the overall control module through the data transmission module. Apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relief process claim 1 , characterized in that the internal stress strain gauge is used to convert a real-time state of the internal stress of the steel rail into an electrical signal, so that the real-time state of the internal stress of the steel rail obtained through the processing of the internal chip and through the data transmission module to the overall control module is sent. Apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relief process claim 1 , characterized in that the main body of the adsorption device is a magnet fixed in the measuring device to fix the measuring device to the rail waist of the steel rail. Apparatus for monitoring rail temperature and internal stress of a steel rail during a stress relief process claim 1 , characterized in that the reinforcing device is an adjustable bolt, which is used to apply pressure to the temperature strain gauge and the internal stress strain gauge to better fit it to the rail waist portion of the steel rail, while supporting the adsorption device to the measuring device attached to the steel rail.

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