Turnout frame size and stock rail lateral displacement monitoring equipment

Abstract

The utility model relates to turnout frame size and stock rail transverse displacement monitoring equipment, which comprises monitoring units arranged on the two sides of the bottom of a turnout stock rail in pairs and used for monitoring the frame size of a turnout and stock rail transverse displacement. Comprising a laser displacement sensor used for measuring transverse movement of the stock rail and a vibration sensor used for measuring vertical vibration of the stock rail. The reflecting surface is matched with the monitoring unit and is used for reflecting emitted light of the laser displacement sensor; and the monitoring host is in wireless communication connection with the monitoring unit. Compared with the prior art, the device can measure the size of the turnout frame and the transverse displacement of the stock rail in a static state and in the turnout vehicle passing process in real time, is high in measurement precision, and is not affected by severe weather. The equipment adopts a distributed mode, each monitoring unit works independently, each monitoring unit is powered by a battery, a sleep wake-up mechanism is adopted, and the equipment is in a sleep state when not collecting, so that the power consumption is reduced, and the working time is prolonged.

Description

Technical Field

[0001] The utility model relates to a rail transit monitoring technology, in particular to a device for monitoring the size of a turnout frame and the lateral displacement of a base rail. Background Art

[0002] The size of the railway turnout frame is the distance between the inner sides of the two basic rails along the direction of the turnout sleeper. When the train passes through the turnout, the basic rail is subjected to the lateral horizontal thrust of the wheel. If the ballast is not compacted and the fasteners are not fastened properly, the basic rail will produce lateral displacement, which will cause the size of the turnout frame to change. The size of the turnout frame affects the smoothness of driving and the closeness of the point rail. The frame size is an item that must be measured in the daily inspection of the turnout. The relevant railway standards stipulate that the turnout frame is laid out according to the turnout design drawing with a deviation of less than ±2mm. The turnout frame size is currently mainly measured by the frame ruler when the skylight is on. This method can only be measured when the turnout does not pass the train, and cannot measure the turnout frame size when the train passes. In recent years, some studies have proposed fixing ultrasonic sensors or cameras on the trackside to monitor the lateral displacement of the basic rail when the train passes, but these methods have the following disadvantages: the installation site is limited, the installation is complicated, the equipment cost is relatively high, the measurement accuracy is not high, and it is affected by rain, snow and fog. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art such as limited installation location, complex installation, relatively high equipment cost, low measurement accuracy, etc., and to provide a switch frame size and stock rail lateral displacement monitoring device.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A device for monitoring turnout frame size and stock rail lateral displacement, the device comprising:

[0006] Monitoring units, which are arranged in pairs on both sides of the bottom of the turnout stock rails, and are used to monitor the frame size of the turnout and the lateral displacement of the stock rails, and include a laser displacement sensor for measuring the lateral displacement of the stock rails and a vibration sensor for measuring the vertical vibration of the stock rails;

[0007] A reflective surface, arranged in cooperation with the monitoring unit, for reflecting the emitted light of the laser displacement sensor;

[0008] The monitoring host is wirelessly connected to the monitoring unit.

[0009] As a preferred technical solution, a plurality of pairs of the monitoring units are arranged at the point rail traction points of the turnout base rails.

[0010] As a preferred technical solution, a plurality of pairs of the monitoring units are arranged at the center rail traction point of the turnout stock rail.

[0011] As a preferred technical solution, the reflecting surface is fixed on the switch plate.

[0012] As a preferred technical solution, the reflecting surface is fixed on the switch sleeper.

[0013] As a preferred technical solution, the stock rail vertical vibration sensor is an acceleration sensor vertically arranged to detect the vertical vibration of the stock rail.

[0014] As a preferred technical solution, the monitoring unit includes:

[0015] High-precision digital-analog chip connected to laser displacement sensor and vibration sensor;

[0016] a first processor connected to a high-precision digital-analog chip;

[0017] a first random access memory and a first fixed memory connected to the first processor;

[0018] The first communication module connected to the first processor and the first antenna connected to the first communication module are used to communicate with the monitoring host.

[0019] As a preferred technical solution, the monitoring unit is powered by a first battery, and a first power module is used to convert the first battery input into the voltage required by each module.

[0020] As a preferred technical solution, the monitoring host includes:

[0021] A second processor;

[0022] a second random access memory and a second fixed memory connected to the second processor;

[0023] The second communication module connected to the second processor and the second antenna connected to the second communication module are data-connected to the monitoring unit.

[0024] As a preferred technical solution, the monitoring host is powered by a second battery, and the second power module converts the second battery input into the voltage required by each module of the monitoring host.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1) The utility model can measure the turnout frame size and the lateral displacement of the stock rail in real time when the turnout is static and when the turnout is passing, with high measurement accuracy and is not affected by bad weather.

[0027] 2) The equipment adopts a distributed mode, and each monitoring unit works independently. The monitoring unit is powered by a battery and adopts a sleep wake-up mechanism. When not collecting data, it is in a sleep state to save power consumption and increase working time.

[0028] 3) Data transmission between devices is wireless, without the restriction of on-site wiring.

[0029] 4) The equipment is easy to disassemble and assemble, and can be used to measure different turnouts. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a device for monitoring the turnout frame dimensions and the lateral displacement of the stock rail;

[0031] Figure 2 A schematic diagram of the monitoring unit installation;

[0032] Figure 3 It is a schematic diagram of the monitoring unit composition;

[0033] Figure 4 It is a schematic diagram of the monitoring host composition;

[0034] Figure 5 A flowchart for monitoring host operation;

[0035] As shown in the figure: 101, monitoring host, 102, monitoring unit, 103, monitoring unit, 104, monitoring unit, 105, monitoring unit, 106, monitoring unit, 107, monitoring unit, 108, monitoring unit, 109, monitoring unit, 201, turnout basic rail, 202, monitoring unit, 203, sensor transmits light through the reflecting surface, 301, laser displacement sensor, 302, acceleration sensor, 303, first power module, 304, first battery, 305, digital-analog chip, 306, first processor, 307, first communication module, 308, first antenna, 309, first RAM, 310, first ROM, 401, second power module, 402, second battery, 403, second processor, 404, second RAM, 405, second ROM, 406, second communication module, 407, second antenna. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0037] Example 1

[0038] A device for monitoring the size of a turnout frame and the lateral displacement of a base rail comprises a monitoring host, a reading terminal, and a plurality of monitoring units. Figure 1As shown, a turnout with three traction points on the point rail and two traction points on the heart rail is used as an example for explanation. The three traction points on the point rail are J1, J2, and J3, and the two traction points on the heart rail are X1 and X2.

[0039] like Figure 1 In this embodiment, a pair of monitoring units 102-109 are symmetrically installed at three point rail traction points and one center rail traction point of two basic rails. A monitoring host 101 is installed beside the turnout.

[0040] Wireless communication is adopted between all monitoring units 102-109 and monitoring host 101. Monitoring units 102-109 are wireless local area network providers, including vibration sensors for monitoring vertical vibration of the base rail caused by wheel impact and displacement sensor data for measuring lateral displacement of the base rail. All monitoring hosts 101 join the network for data transmission. WLAN, Bluetooth and other local area network technologies can be used in implementation.

[0041] The monitoring unit is installed as follows Figure 2 As shown, the monitoring unit 202 is fixed to the bottom of the turnout basic rail 201, and the fixing method can be bolts, tension springs, etc. The monitoring unit 202 contains a laser displacement sensor, and the light emitted by the sensor is reflected by the reflection surface 203 and then received by the sensor. The reflection surface 203 is fixed on the turnout plate or the turnout sleeper.

[0042] like Figure 3 As shown, the monitoring unit 202 includes a laser displacement sensor 301 and an acceleration sensor 302. The laser displacement sensor 301 measures the lateral displacement of the basic rail. When the train passes through the turnout, the basic rail is subjected to the lateral horizontal thrust of the wheel to produce lateral displacement, the displacement sensor and the reflective surface are relatively displaced, and the sensor output signal changes. The lateral displacement of the basic rail at the installation position of the monitoring unit is equal to the output change value of the displacement sensor. The change value of the turnout frame at the installation position of the monitoring unit is equal to the sum of the output change values ​​of the displacement sensors in a pair of monitoring units symmetrically installed on both sides of the basic rail. The acceleration sensor 302 collects the vertical vibration of the basic rail. When the turnout does not pass the train, the acceleration sensor 302 outputs a stable signal. When the train passes the turnout, the basic rail is subjected to the vertical impact force of the wheel, and the acceleration sensor 302 starts to output a change signal, thereby judging the start and end of the turnout passing the train. The monitoring unit is powered by the first battery 304, and the first power module 303 converts the input of the first battery 304 into the voltage required by each module. The high-precision analog-to-digital chip 305 converts the analog signal output by the displacement sensor into a digital signal. The first processor 306 executes the monitoring unit workflow. The first random access memory (RAM) 309 and the first fixed memory (ROM) 310 provide the processor with storage media required to run the program. The first communication module 307 and the first antenna 308 realize communication with the monitoring host.

[0043] like Figure 4 As shown, the monitoring host 101 unit is powered by a second battery 401, and a second power module 402 converts the input of the second battery 401 into the voltage required by each module. A second processor 403 executes the working process of the monitoring host 101. A second random access memory (RAM) 404 and a second fixed memory (ROM) 405 provide the second processor 403 with the storage medium required to run the program. A second communication module 406 and a second antenna 407 provide a wireless local area network for data transmission between the access terminal and all monitoring hosts.

[0044] like Figure 5 As shown, the working process of the monitoring unit 202 is as follows. After the monitoring unit 202 is powered on and initialized, the timer period is set to T, and then it enters the energy-saving sleep mode. During the sleep period, if the vibration sensor input exceeds the set threshold value H, the sleep mode is exited, the vehicle passing collection is activated, and the high-frequency collection of vibration sensor and displacement sensor data is started and saved in the device memory. During the vehicle passing collection, if the vibration sensor input is lower than the set threshold value L, the vehicle passing collection is stopped, and all the data collected from the vehicle passing is sent to the monitoring host before entering the sleep mode. After the set sleep period T expires, the monitoring unit exits the sleep mode, collects the static data of the displacement sensor and vibration sensor once, sends the data to the monitoring host, and then sets the timer period to T to enter the energy-saving sleep mode. The monitoring unit executes the above working process in a loop.

[0045] The monitoring host receives the displacement sensor data of two monitoring units at symmetrical positions on both sides of the traction point. n ,q n After that, the current two basic track lateral displacements m can be calculated. n 、n n m n =p n +p0,n n =q n +q0. Among them, p0 and q0 are the displacement sensor output values ​​of the two monitoring units collected for the first time after the equipment is installed.

[0046] Add the lateral displacement data of the two monitoring units to the frame reference value b at the traction point to calculate the current frame size b at the traction point n =b+m1+m2. The frame reference value b is the frame value of the position measured when the equipment is installed.

[0047] In the viewing terminal, users can choose to view the corresponding vehicle frame size and basic rail lateral displacement data according to conditions such as turnout, traction point, time, etc.

[0048] The implementation methods of other types of turnouts are similar, so they will not be described here in detail.

[0049] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A device for monitoring the size of a turnout frame and the lateral displacement of a stock rail, characterized in that: The device comprises: Monitoring units (202), the monitoring units (202) being arranged in pairs at both sides of the bottom of the turnout stock rail (201), and being used to monitor the frame size of the turnout and the lateral displacement of the stock rail, and comprising a laser displacement sensor (301) for measuring the lateral displacement of the stock rail and a vibration sensor for measuring the vertical vibration of the stock rail; A reflective surface (203) is provided in cooperation with the monitoring unit (202) and is used to reflect the emitted light of the laser displacement sensor (301); The monitoring host (101) is wirelessly connected to the monitoring unit (202).

2. A turnout frame size and stock rail lateral displacement monitoring device according to claim 1, characterized in that: A plurality of pairs of the monitoring units (202) are arranged at the point rail traction points of the turnout stock rail (201).

3. A turnout frame size and stock rail lateral displacement monitoring device according to claim 2, characterized in that: A plurality of pairs of the monitoring units (202) are arranged at the center rail traction point of the turnout stock rail (201).

4. A turnout frame size and stock rail lateral displacement monitoring device according to claim 1, characterized in that: The reflecting surface (203) is fixed on the switch plate.

5. A turnout frame size and stock rail lateral displacement monitoring device according to claim 1 or 4, characterized in that: The reflecting surface (203) is fixed on the switch tie.

6. A device for monitoring turnout frame size and stock rail lateral displacement according to claim 1, characterized in that: The basic rail vertical vibration sensor is an acceleration sensor (302) vertically arranged for detecting the vertical vibration of the basic rail.

7. A turnout frame size and stock rail lateral displacement monitoring device according to claim 1, characterized in that: The monitoring unit (202) comprises: A high-precision digital-analog chip (305) connected to the laser displacement sensor (301) and the vibration sensor; A first processor (306) connected to the high-precision digital-analog chip (305); A first random access memory (309) and a first fixed memory (310) connected to the first processor (306); A first communication module (307) connected to the first processor (306) and a first antenna (308) connected to the first communication module (307) are used to communicate with the monitoring host (101).

8. A device for monitoring turnout frame size and stock rail lateral displacement according to claim 7, characterized in that: The monitoring unit (202) is powered by a first battery (304), and uses a first power module (303) to convert the input of the first battery (304) into a voltage required by each module.

9. A turnout frame size and stock rail lateral displacement monitoring device according to claim 1, characterized in that: The monitoring host (101) comprises: A second processor (403); A second random access memory (404) and a second fixed memory (405) connected to the second processor (403); The second communication module (406) connected to the second processor (403) and the second antenna (407) connected to the second communication module (406) are data-connected to the monitoring unit (202).

10. A device for monitoring turnout frame size and stock rail lateral displacement according to claim 1, characterized in that: The monitoring host (101) is powered by a second battery (401), and the second power supply module (402) converts the input of the second battery (401) into the voltage required by each module of the monitoring host (101).

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