Stroke monitoring device and system for action rod of switch machine

Abstract

The utility model relates to a switch machine actuating rod stroke monitoring device and system, comprising a reflector fixed on a switch machine actuating rod, and the plane of the reflector is vertical to the moving direction of the actuating rod; the acquisition extension set is fixedly mounted in the switch machine and comprises a processor, and a light emitter and a photoelectric conversion unit which are connected with the processor; emitted light of the light emitter faces the central area of the light-emitting plate and is parallel to the moving direction of the action rod; the photoelectric conversion unit and the light emitter are adjacent and located on the same plane, the plane where the light emitter and the photoelectric conversion unit are located is parallel to the plane of the reflector, and the photoelectric conversion unit receives laser reflected by the reflector, forms a light spot digital image and sends the light spot digital image to the processor. Compared with the prior art, the ZD6 series point switch operating rod stroke monitoring device can accurately monitor the stroke of the point switch operating rod in a non-contact mode on the basis that the original structure of a point switch is not changed; the principle is reliable, the structure is simple and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of turnout monitoring, in particular to a stroke monitoring device and system for the operating rod of a ZD6 series switch machine. Background Technique

[0002] A turnout is an important part of a railway line. The change in the position of the switch rail guides the train to different track lines. A switch machine is a device that controls the change in the position of the switch rail and the switching of the turnout. Currently, the ZD6 series switch machines are the switch machines with a large inventory in operating railways. There are various stroke and traction force combination models for the ZD6 series switch machines, which are applied to different turnouts. When the turnout is switched, the operating rod of the switch machine drives the switch rail through the operating connecting rod to complete the conversion of the turnout between the normal position and the reverse position. As the service time of the switch machine increases, the failure probability of the switch machine increases, and the maintenance and repair requirements also increase. Therefore, it is necessary to monitor the operating state of the switch machine, detect faults early, and ensure the normal operation of the railway.

[0003] Currently, the monitoring of the operating parameters of the ZD6 series switch machines on railways mainly includes conversion current power curves, internal notches, displacement of the indicating rod, etc. Neither the current power curve nor the internal notch can reflect the stroke of the operating rod of the switch machine. The displacement monitoring of the indicating rod is realized by using an indicating rod with an embedded magnetic grating in cooperation with a special sensor. However, the workload of replacing and transforming the indicating rod is large, and there are various defects in the adaptability of the indicating rod with the embedded magnetic grating to the harsh railway site environment such as vibration intensity, thermal expansion and contraction, waterproofing, measurement accuracy, and degaussing. The stroke of the operating rod of the switch machine directly affects the close contact and opening distance when the turnout is locked, and it is an important operating parameter of the switch machine. Currently, there is no method or system for monitoring the stroke of the operating rod of the ZD6 series switch machines.

[0004] For example, the on-line monitoring device for the stroke of the operating rod of a switch machine disclosed in Chinese Patent Application CN202210725711.X obtains the displacement distance and displacement direction of the operating rod of the switch machine relative to the switch machine housing through magnetic field induction. However, this solution is easily affected by external electromagnetic interference and it is difficult to accurately monitor the stroke of the operating rod of the switch machine in a complex electromagnetic environment. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the defects existing in the above-mentioned prior art and provide a stroke monitoring device for the operating rod of a ZD6 series switch machine.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] As the first aspect of the utility model, a stroke monitoring device for a switch machine operating rod is provided. The monitoring device includes:

[0008] A reflector, fixed on the operating rod of the switch machine, and the plane of the reflector is perpendicular to the moving direction of the operating rod;

[0009] The acquisition extension unit is fixedly installed inside the switch machine. The acquisition extension unit includes: a processor, an optical transmitter connected to the processor, and a photoelectric conversion unit;

[0010] The emitted light of the optical transmitter is directed towards the central area of the reflector and is parallel to the moving direction of the operating rod;

[0011] The photoelectric conversion unit is adjacent to the optical transmitter and is in the same plane, and the plane where the optical transmitter and the photoelectric conversion unit are located is parallel to the plane of the reflector. The photoelectric conversion unit forms a spot digital image after receiving the laser reflected by the reflector and sends it to the processor.

[0012] As a preferred technical solution, a RAM, a ROM, and a communication unit connected to the processor are further provided inside the acquisition extension unit.

[0013] As a preferred technical solution, the outer surface of the reflector is smooth and is fixed to the operating rod by a buckle or a hoop.

[0014] As a preferred technical solution, the monitoring device uses an integrated laser distance sensor integrating the functions of light emission, reception, and distance calculation. The integrated laser distance sensor is arranged inside the acquisition extension unit and is communicatively connected to the processor.

[0015] As a preferred technical solution, a monitoring device is further installed inside the switch machine, and the monitoring device is fixedly installed through a fixed bracket.

[0016] As a preferred technical solution, the monitoring device includes a temperature and humidity sensor for obtaining the temperature and humidity data inside the switch machine. The temperature and humidity sensor is installed inside the switch machine and is communicatively connected to the acquisition extension unit.

[0017] As a preferred technical solution, the monitoring device includes a Hall current sensor for monitoring the working current during the conversion of the switch machine. The input cable of the switch machine passes through the aperture of the Hall current sensor, and the Hall current sensor is communicatively connected to the acquisition extension unit.

[0018] As the second aspect of the present invention, a monitoring system for the stroke of the switch machine operating rod is provided. The system device includes: a plurality of monitoring devices for the stroke of the switch machine operating rod as described above, a plurality of communication extension units, a station switch, a station server, and a station review terminal.

[0019] The acquisition extension unit of each monitoring device for the stroke of the switch machine operating rod is communicatively connected to the station switch through the communication extension unit, and the station server and the station review terminal are respectively communicatively connected to the station switch.

[0020] As a preferred technical solution, the station server is communicatively connected to the integrated monitoring system server through the station switch.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The ZD6 series switch machine action rod stroke monitoring device proposed by the utility model can accurately monitor the stroke of the ZD6 series switch machine action rod in a non-contact manner without changing the original structure of the switch machine; the design principle is reliable, the structure is simple, and the installation is convenient. Description of the Drawings

[0023] Figure 1 It is a layout and installation schematic diagram of the switch machine action rod stroke monitoring device;

[0024] Figure 2 It is a schematic diagram for calculating the moving distance of the switch machine action rod;

[0025] Figure 3 It is a schematic block diagram of the acquisition submachine composition;

[0026] Figure 4 It is a working flowchart of the acquisition submachine;

[0027] Figure 5 It is a schematic diagram of the switch machine action rod stroke monitoring system;

[0028] The reference numerals in the figures indicate: 1. ZD6 series switch machine; 2. Motor; 3. Reducer; 4. Friction connector; 5. Starting piece; 6. Quick-acting piece; 7. Automatic switch; 8. Locking gear; 9. Indication rod; 10. Action rod; 11. Acquisition submachine; 12. Reflective plate; 101. Processor; 102. Light emitter; 103. Photoelectric conversion unit; 104. Current sensor; 105. Temperature and humidity sensor; 106. RAM; 107. ROM; 108. Communication unit; 109. Power supply unit; 201. Communication submachine; 202. Station switch; 203. Station server; 204. Station monitoring terminal; 205. Comprehensive monitoring system server. Detailed Embodiment

[0029] The following will describe the present utility model in detail with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and gives detailed implementation manners and specific operation processes, but the protection scope of the present utility model is not limited to the following embodiments.

[0030] Embodiment 1

[0031] As Figure 1As shown in the figure, the utility model provides a stroke monitoring device for the actuator rod of the ZD6 series switch machine. A reflector 12 is fixed on the actuator rod 10 of the ZD6 series switch machine. The outer surface of the reflector 12 is smooth and made of stainless steel material. The reflector 12 can be rectangular, circular or other shapes. The plane of the reflector 12 is perpendicular to the moving direction of the actuator rod 10. The fixing method is by using a snap or a hoop. Ensure that the reflector and the fixing clamp do not touch the internal components of the switch machine during the conversion process of the switch machine.

[0032] The acquisition sub-machine 11 is fixedly installed inside the ZD6 series switch machine with a fixing bracket. The acquisition sub-machine 11 includes a light emitter. The light emitted by the light emitter is a converging red semiconductor laser beam with a beam diameter of 0.6 mm, a wavelength of 650 nm, an output power of 1 mW, a pulse duration of 5 ms, and a laser class of Class1. The emitted light is parallel to the moving direction of the actuator rod 10 and is reflected by the central area of the reflector 12.

[0033] The acquisition sub-machine 11 also includes a photoelectric conversion unit 103, which receives the laser reflected by the reflector 12 and converts it into a spot digital image. The photoelectric conversion unit 103 is adjacent to the light emitter 102 and is in the same plane, and this plane is parallel to the plane of the reflector 12. The spot digital image formed by the photoelectric conversion unit 103 is sent to the processor. The processor 101 processes the spot digital image and calculates the pixel position of the center of the spot. The processor 101 calculates the vertical distance from the light emitter 102 to the reflector 12 from the pixel position of the center of the spot. The processor 12 further calculates the stroke of the actuator rod 10 of the switch machine from the vertical distance from the light emitter 102 to the reflector 12. As Figure 2 shown, when the actuator rod 10 of the switch machine moves, it drives the reflector 12 to move the same distance, and the stroke of the actuator rod 10 of the switch machine is calculated.

[0034] As Figure 2 shown, the light emitter emits a light ray AO, and after being reflected by the reflector, the light ray OB. The light ray OB forms a spot image after being received by the photoelectric conversion unit, and the average value of all pixel coordinates of the image is calculated as E. The distance between the light emitter and the reflector can be calculated:

[0035]

[0036] Among them, AB is the distance between the light emitter and the photoelectric conversion unit, and FB is the focal length of the photoelectric conversion unit, both of which are fixed values; FE is the pixel coordinate of the spot image.

[0037] Furthermore, when the actuator rod is fully retracted and it is calculated that AO = L, then the stroke of the switch machine can be calculated as x - L from the distance x between the light emitter and the reflector.

[0038] For further improvement of this technical solution, an integrated laser distance sensor integrating functions of light emission, reception, and distance calculation may be adopted. The sensor outputs a current or voltage signal of the distance from the sensor plane to the reflector 12. The processor 101 calculates the distance from the sensor plane to the reflector 12 from the current or voltage signal, and further calculates the stroke of the operating rod 10.

[0039] As Figure 3 shown, a random access memory RAM 106, a read-only memory ROM 107, and a communication unit 108 connected to the processor 101 are further provided in the acquisition extension 11. A monitoring device is also installed in the switch machine and is fixedly installed through a fixed bracket. The monitoring device includes a temperature and humidity sensor 105, which is used to obtain the temperature and humidity data 105 in the switch machine. It is installed in the switch machine and communicates with the acquisition extension. The monitoring device also includes a Hall current sensor, and this Hall current sensor 104 is used to monitor the working current during the conversion of the switch machine. It is connected to the acquisition extension and installed in the switch machine. The input cable of the switch machine passes through the aperture of the current sensor and communicates with the acquisition extension.

[0040] Embodiment 2

[0041] As the second aspect of the present utility model, a method for monitoring the stroke of the operating rod of a ZD6 series switch machine using the device described in the above embodiment is provided. A reflector 12 is fixed on the operating rod 10 of the ZD6 switch machine. The plane of the reflector 12 is perpendicular to the moving direction of the operating rod 10. The light emitter emits a converging light beam towards the central area of the reflector 12, and the light beam is perpendicular to the reflector or parallel to the moving direction of the operating rod. The light receiving and photoelectric conversion unit is adjacent to the light emitter, and the lenses are in the same plane, and this plane is parallel to the plane of the reflector 12. The light receiving and photoelectric conversion unit forms a spot digital image after receiving the light beam reflected by the reflector 12 and sends it to the processor. The processor processes the spot digital image and calculates the pixel position of the center of the spot. The processor calculates the perpendicular distance from the light emitter to the reflector from the pixel position of the center of the spot. The processor further calculates the stroke of the operating rod of the switch machine from the perpendicular distance from the light emitter to the reflector.

[0042] As Figure 4As shown in the figure, the working process of the acquisition extension is as follows: After power-on and initialization, the period of timer C1 is set to T1, and the monitoring device enters the sleep mode. During the sleep mode, if the input of the current sensor exceeds the set threshold H, the sleep mode is exited, and the switch conversion acquisition mode is entered. The period of timer C2 is set to T2, and the movement rod stroke data is calculated at the frequency F and saved in the device memory. In the switch conversion acquisition mode, if the input of the current sensor is lower than the set threshold L or timer C2 expires, the acquisition of the movement rod stroke is stopped. After all the stored data is sent, the device enters the sleep mode. When the set sleep period T1 of timer C1 expires, the monitoring device exits the sleep mode, acquires the temperature and humidity sensor data, calculates the movement rod stroke, sends the data, then sets the period of timer C1 to T1, and enters the energy-saving sleep mode. The monitoring device executes the above working process in a loop. As a preferred embodiment, T1 can be set to 30 seconds, T2 to 6 seconds, H to 1 ampere, L to 0.1 ampere, and the frequency F to 100 Hz. The setting of other parameters is only for optimization.

[0043] Embodiment 3

[0044] As the third aspect of the present invention, the present invention also provides a ZD6 series switch machine movement rod stroke monitoring system, as Figure 5 shown, the system includes several switch machine movement rod stroke monitoring devices as described in the above embodiments, several communication extensions 201, a station switch 202, a station server 203, a station monitoring terminal 204, and a comprehensive monitoring system server 205. The acquisition extensions 11 installed inside each switch machine are respectively connected to the station monitoring terminal 204 and the station server 203 through the communication extensions 201 and the station switch 202. The station server 203 is communicatively connected to the existing comprehensive monitoring system server 205 through the station switch 202.

[0045] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A switch machine operating rod travel monitoring device, characterized in that: The monitoring device comprises: A reflective plate (12) is fixed on the switch machine operating rod (10), and the plane of the reflective plate (12) is perpendicular to the moving direction of the operating rod (10); A data collection extension (11) is fixedly installed inside the switch machine, and the data collection extension (11) comprises: a processor (101), and a light transmitter (102) and a photoelectric conversion unit (103) connected to the processor (101); The light emitted by the light emitter (102) is directed toward the central area of ​​the reflective plate (12) and is parallel to the moving direction of the action rod (10); The photoelectric conversion unit (103) is adjacent to the light emitter (102) and is located in the same plane, and the plane where the light emitter (102) and the photoelectric conversion unit (103) are located is parallel to the plane of the reflector. The photoelectric conversion unit (103) receives the laser reflected by the reflector (12) to form a light spot digital image, and sends it to the processor (101).

2. A switch machine operating rod travel monitoring device according to claim 1, characterized in that: The data collection sub-machine is also provided with a RAM (106), a ROM (107) and a communication unit (108) connected to the processor (101).

3. A switch machine operating rod stroke monitoring device according to claim 1, characterized in that: The reflective plate (12) has a smooth surface and is made of stainless steel.

4. A switch machine operating rod stroke monitoring device according to claim 1, characterized in that: The reflective plate (12) is fixed to the action rod (10) in a buckle or hoop shape.

5. The device for monitoring the travel of a switch machine operating rod according to claim 1, characterized in that: The monitoring device adopts an integrated laser distance sensor with integrated light emission, reception and distance calculation functions. The integrated laser distance sensor is arranged in the collection extension (11) and is communicatively connected to the processor (101).

6. A switch machine operating rod stroke monitoring device according to claim 1, characterized in that: A monitoring device is also installed in the switch machine, and the monitoring device is fixedly installed through a fixing bracket.

7. A switch machine operating rod stroke monitoring device according to claim 6, characterized in that: The monitoring device comprises a temperature and humidity sensor (105) for acquiring temperature and humidity data in the switch machine. The temperature and humidity sensor (105) is installed in the switch machine and is in communication connection with the data collection extension (11).

8. The device for monitoring the travel of a switch machine operating rod according to claim 6, characterized in that: The monitoring device comprises a Hall current sensor (104) for monitoring the working current when the switch machine is switched. The input cable of the switch machine passes through the aperture of the Hall current sensor (104). The Hall current sensor (104) is communicatively connected with the collection extension (11).

9. A switch machine operating rod travel monitoring system, characterized in that: The system comprises: a plurality of switch machine operating rod travel monitoring devices as claimed in any one of claims 1 to 8, a plurality of communication extensions (201), a station switch (202), a station server (203) and a station access terminal (204), The collection extension (11) of each switch machine operating rod travel monitoring device is connected to the station switch (202) through the communication extension (201), and the station server (203) and the station access terminal (204) are connected to the station switch (202) respectively.

10. A switch machine operating rod travel monitoring system according to claim 9, characterized in that: The station server (203) is communicatively connected to the integrated monitoring system server (205) via the station switch (202).

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