Turnout switch rail creeping amount monitoring device based on magnetostriction

Abstract

The utility model discloses a turnout switch rail creeping quantity monitoring device based on magnetostriction, which belongs to the technical field of urban rail transit signal monitoring and comprises a data acquisition extension set, a terminal alarm device, a magnetostriction sensor, a magnetic head and a creeping quantity monitoring support. The magnetostrictive sensor is connected with the data acquisition extension set through a cable, and the data acquisition extension set is connected with the terminal alarm device through a cable. According to the utility model, the magnetostriction principle is utilized to measure the longitudinal displacement of the switch rail relative to the stock rail on line in real time, and compared with the traditional mode that the creeping amount is obtained manually through a reference mark point, the device has the advantages of high efficiency, high precision and time and labor saving, and has great economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of urban rail transit signal monitoring technology, specifically to a turnout switch rail creep monitoring device based on magnetostriction. Background Technology

[0002] As a crucial piece of equipment in train operation, the reliability and stability of turnouts are vital for safe and smooth train travel. The switch rail and frog rail, as moving parts of the turnout, play a vital role in changing the direction of train travel. Turnout switch rail creep refers to the longitudinal displacement of the turnout switch rail relative to the stock rail. This creep is a key operating parameter of the turnout; real-time monitoring of the switch rail creep and subsequent adjustments can enhance the smoothness and safety of high-speed trains passing through the turnout. Currently, turnout maintenance personnel primarily rely on manually obtaining the switch rail creep by marking reference points on the stock rail with paint and verifying the distance between the front end of the switch rail and these reference points on the stock rail.

[0003] Manually obtaining creep measurement data via reference markers has the following drawbacks: Increased train speeds or shorter operating intervals mean maintenance personnel can only inspect the track during maintenance windows, meaning they cannot access the track at other times. Furthermore, the accuracy of creep measurements obtained manually via reference markers is low due to limitations imposed by the on-site working environment. Moreover, current turnout creep monitoring primarily relies on manual observation of markers, without the use of equipment or sensors for switch rail creep measurement, resulting in low efficiency. Therefore, we propose a magnetostrictive turnout switch rail creep monitoring device. Utility Model Content

[0004] The purpose of this invention is to overcome the aforementioned problems in the existing technology and provide a turnout switch rail creep monitoring device based on magnetostriction. It uses the magnetostriction principle to measure the longitudinal displacement of the switch rail relative to the stock rail in real time online. Compared with the traditional method of manually obtaining creep amount through reference markers, it is more efficient, more accurate and saves time and manpower, thus having great economic benefits.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A magnetostrictive track switch point rail creep monitoring device includes a data acquisition unit and a terminal alarm device, as well as a magnetostrictive sensor, a magnetic head, and a creep monitoring bracket; the magnetostrictive sensor is connected to the data acquisition unit via a cable, and the data acquisition unit is then connected to the terminal alarm device via a cable.

[0007] Preferably, the creepage monitoring bracket comprises a double-side clamp mounted on the basic rail and a single-side clamp mounted on the switch rail; the magnetic head is fixed on the single-side clamp; and the magnetostrictive sensor is mounted on the double-side clamp.

[0008] Preferably, the magnetostrictive sensor comprises a measuring rod, an electronic bin and a magnetic ring sleeved on the measuring rod, and the measuring rod is consistent with the direction of the magnetic head.

[0009] Preferably, the creepage monitoring bracket is located directly below the switch rail and has a locking function, and will not deviate from the fixed position after the train is completed.

[0010] Preferably, the single-side clamp comprises a single-side clamp fixing frame, and a magnetic head bracket is arranged on one side of the outer portion of the single-side clamp fixing frame, so as to facilitate the installation and fixation of the magnetic head on the single-side clamp.

[0011] In summary, the utility model has at least one of the following beneficial effects:

[0012] The utility model discloses a magnetostrictive principle is used to measure the longitudinal displacement of the switch rail relative to the basic rail in real time on line, and the method has the advantages of high efficiency, high precision and time and labor saving compared with the traditional manual method of obtaining the creepage by referring to the mark point, improves the collection and monitoring efficiency and has great economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a top view use state structure schematic diagram of the utility model;

[0014] Figure 2 It is a structure schematic diagram of the single-side clamp of the utility model;

[0015] Figure 3 It is a structure schematic diagram of the magnetic head bracket of the utility model;

[0016] Figure 4 It is a top view of the utility model; Figure 3

[0017] In the drawings, the component list represented by each sign is as follows:

[0018] 1-magnetostrictive sensor, 2-magnetic head, 3-double-side clamp, 4-single-side clamp, 5-magnetic head bracket, 6-single-side clamp fixing frame. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail as follows. Figures 1-4 The utility model will be further explained in detail as follows.

[0020] One embodiment of the utility model provides: Figure 1 ​The utility model provides a kind of based on magnetostrictive switch frog point rail creep amount monitoring device, including data acquisition extension and terminal alarm device, still including magnetostrictive sensor 1, magnetic head 2 and creep amount monitoring support, creep amount monitoring support is located just below switch frog point rail, contain arrest function, after driving, it will not deviate fixed position;

[0021] Magnetostrictive sensor 1 is connected with data acquisition extension by cable, and data acquisition extension is connected with terminal alarm device by cable again;

[0022] Creep amount monitoring support includes opposite side card 3 installed on main rail and single side card 4 installed on switch frog point rail;Magnetic head 2 is fixed on single side card 4;Magnetostrictive sensor 1 is composed of measuring rod, electronic bin and magnetic ring sleeved on measuring rod, and magnetostrictive sensor 1 is installed on opposite side card 3, and when installing, measuring rod is consistent with the direction of magnetic head 2.

[0023] Referring to Figure 2 、 Figure 3 And Figure 4 Single side card 4 includes single side card fixed frame 6, and the outer side of single side card fixed frame 6 is provided with magnetic head support 5;Magnetic head support 5 and magnetic head 2 are fixed on single side card fixed frame 6 by the cooperation of screw and nut, and magnetic head 2 is fixed on the side of magnetic head support 5 away from single side card fixed frame 6, so as to facilitate the installation and fixation of magnetic head 2 on single side card 4.

[0024] Working principle:

[0025] Magnetostrictive sensor 1 utilizes sensor probe to convert displacement into two pulses of time interval proportional to displacement, utilizes shaping circuit to change two pulses into a rectangular pulse, and the width of rectangular pulse is the time interval of two pulses, and displacement is calculated according to time interval.System causes the change of time interval according to the input displacement, and outputs corresponding voltage waveform, so as to calculate the displacement.

[0026] Displacement data measured by magnetostrictive sensor 1 is transmitted to data acquisition extension for processing by CAN communication mode, and data acquisition extension transmits analyzed data to terminal alarm device for chart display and limit value alarm.

[0027] The above are preferable embodiments of the utility model, not limit the protection scope of the utility model, so: equivalent changes made according to the structure, shape, principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A magnetostrictive-based monitoring device for monitoring the amount of creep of a switch blade, comprising a data acquisition terminal and a terminal alarm device, characterized in that: It also includes magnetostrictive sensor (1), magnetic head (2) and creep monitoring bracket; The magnetostrictive sensor (1) is connected with the data acquisition extension through a cable, and the data acquisition extension is connected with the terminal alarm device through a cable; The creep monitoring bracket includes opposite side clamps (3) installed on the basic rail and single side clamps (4) installed on the pointed rail; the magnetic head (2) is fixed on the single side clamps (4); the magnetostrictive sensor (1) is installed on the opposite side clamps (3), and the measuring rod thereof is consistent with the direction of the magnetic head (2); The displacement data measured by the magnetostrictive sensor (1) is transmitted to the data acquisition extension for processing through the CAN communication mode, the data acquisition extension transmits the analyzed data to the terminal alarm device for chart display and limit value alarm.

2. The magnetostrictive based monitoring device for monitoring the creep of a switch blade according to claim 1, wherein: The magnetostrictive sensor (1) is composed of a measuring rod, an electronic bin and a magnetic ring sleeved on the measuring rod.

3. The magnetostrictive based monitoring device for monitoring the creep of a switch blade according to claim 1, wherein: The creep monitoring bracket is located directly below the pointed rail of the turnout and has a locking function, so that it will not deviate from the fixed position after the train operation is completed.

4. The magnetostrictive based switch blade creep monitoring device of claim 1, wherein: The single side clamps (4) include single side clamp fixing frames (6), and the outer side of the single side clamp fixing frames (6) is provided with magnetic head supports (5).

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