System and method for measuring excavation depth and track lifting height of railway screen scarifier

Abstract

The invention discloses a system and a method for measuring excavation depth and track lifting height of a railway screen scarifier. The system comprises a communicating vessel unit, a plurality of liquid level sensors, a data processing unit and a display unit, the communicating vessel unit comprises a plurality of sealed containers which are communicated with one another, and the sealed containers are respectively mounted at a measurement reference point position, a descending guide groove position and a track lifting device position of the rail cleaning machine; the plurality of liquid level sensors are respectively arranged in the sealed containers and are used for respectively measuring the liquid level heights at the position of the measuring datum point, the descending guide groove and the track lifting device; the data processing unit is connected with all the liquid level sensors and the display unit and used for receiving signals transmitted by all the liquid level sensors, calculating the excavation depth and the track lifting height of the descending guide groove and sending calculated results to the display unit; and the display unit receives and displays a result calculated by the data processing unit. A measurement system architecture based on a water pressure difference principle is adopted, the measurement precision is high, and high efficiency and stability are achieved.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a system and method for measuring the excavation depth and track height of a railway screening machine. Background Art

[0002] In the railway track cleaning operation, accurately controlling the excavation depth of the rail cleaning machine's descending guide trough and the track start height is the key to ensuring the track cleaning quality and the geometric shape of the rails. The existing measurement methods on the market generally have problems such as low efficiency, poor accuracy, and insufficient stability. Due to the inability to accurately measure the excavation depth, the track cleaning fails to meet the standards, affecting the elasticity and drainage performance of the track; and the inaccurate measurement of the track start height directly leads to deviations in the height and flatness of the rails, threatening the safety and stability of railway operations.

[0003] Therefore, it is urgent to develop an efficient, accurate and stable measurement system to meet the stringent requirements of railway screening operations. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a system and method for measuring the excavation depth and track height of a railway screening machine with high measurement accuracy.

[0005] The technical solution provided by the present invention is as follows: A system for measuring the excavation depth and track lifting height of a railway cleaning and screening machine comprises a communicating vessel unit, a plurality of liquid level sensors, a data processing unit and a display unit; the communicating vessel unit comprises a plurality of mutually communicating sealed containers, which are respectively installed at the measurement reference point position, the descending guide groove and the track lifting device of the railway cleaning and screening machine; a plurality of the liquid level sensors are respectively installed in each sealed container, and are used to respectively measure the liquid level height at the measurement reference point position, the descending guide groove and the track lifting device; the data processing unit connects each liquid level sensor with the display unit, and is used to receive signals from each liquid level sensor, calculate the excavation depth and track lifting height of the descending guide groove, and send the calculated results to the display unit; the display unit receives the results calculated by the data processing unit and displays them.

[0006] Preferably, the communicating vessel unit further comprises a water storage tank communicated with the sealed container.

[0007] Preferably, the measurement reference point position of the rail cleaning machine is the position of the bogie when not excavating.

[0008] Preferably, after measuring the liquid level height, the liquid level sensor converts the measured liquid level height into a 16-bit digital signal and outputs it to the data processing unit.

[0009] Preferably, when the data processing unit calculates the excavation depth and the track lifting height of the descending guide groove, the liquid level at the measuring reference point position is used as a reference minus the height between the liquid level sensor at the measuring reference point position and the liquid level sensor at the descending guide groove as the zero point of the descending guide groove, and the difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the zero point of the descending guide groove is the excavation depth; the liquid level at the measuring reference point position is used as a reference minus the height between the liquid level sensor at the measuring reference point position and the liquid level sensor at the track lifting device as the zero point of the track lifting device, and the difference between the liquid level height measured by the liquid level sensor at the track lifting device and the zero point of the track lifting device is the track lifting height.

[0010] Preferably, the data processing unit comprises an industrial-grade embedded computer integrating analog-to-digital conversion, filtering algorithm and data fusion functions, and is connected to the railway screening machine and the main control system.

[0011] Preferably, the display unit comprises a display screen, and the display screen is connected to the railway screening machine via a main control system, so that the results calculated by the data processing unit are displayed on the display screen via the main control system.

[0012] A method for measuring the excavation depth and track height of a railway screen cleaning machine, using the above-mentioned system for measuring the excavation depth and track height of a railway screen cleaning machine, the method comprising: Initialization includes: clearing the liquid level sensor at the measuring reference point; setting the zero point of the descending guide groove and the zero point of the track-lifting device, taking the liquid level at the measuring reference point as the reference minus the height between the liquid level sensor at the measuring reference point and the liquid level sensor at the descending guide groove as the zero point of the descending guide groove, and taking the liquid level at the measuring reference point as the reference minus the height between the liquid level sensor at the measuring reference point and the liquid level sensor at the track-lifting device as the zero point of the track-lifting device; Real-time measurement and display, including: using a liquid level sensor to measure the liquid level heights at the measurement reference point, the descending guide groove, and the road lifting device respectively; sending the liquid level height data to a data processing unit, which calculates the excavation depth and the road lifting height. The difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the zero point of the descending guide groove is the excavation depth, and the difference between the liquid level height measured by the liquid level sensor at the road lifting device and the zero point of the road lifting device is the road lifting height; and then displaying the calculated result through a display unit.

[0013] Compared with the prior art, the railway cleaning machine excavation depth and track lifting height measurement system of the present invention adopts a measurement system architecture based on the water pressure difference principle, which can accurately measure the excavation depth of the descending guide groove and the track lifting height, and strictly control the error within an extremely small range, fully meeting the requirements of railway track cleaning operations for high-precision measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of a system for measuring the excavation depth and track height of a railway screening machine according to an embodiment of the present invention; Figure 2 To have Figure 1 A front view of a railway screening machine showing a system for measuring the digging depth and track height of the railway screening machine; Figure 3 for Figure 2 A top view of a railway screen cleaning machine is shown. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In the embodiments provided in the present application, it should be understood that the disclosed methods and systems can be implemented in other ways. The system embodiments described below are merely schematic. For example, the division of units and modules is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or modules can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0018] In addition, all functional units in the embodiments of the present application may be integrated into one processor, or each unit may be a separate device, or two or more units may be integrated into one device; each functional unit in the embodiments of the present application may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0019] A person skilled in the art can understand that all or part of the steps of the following method embodiments can be completed by program instructions and related hardware. The aforementioned program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, the steps of the following method embodiments are executed; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a magnetic disk or an optical disk, and other media that can store program codes.

[0020] It should be understood that if "system", "device", "unit" and / or "module" are used in this application, it is only a method for distinguishing different units, elements, components, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0022] If a flow chart is used in the present application, the flow chart is used to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a certain step or several steps of operations can be removed from these processes.

[0023] It should also be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such articles or devices. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0024] like Figures 1 to 3 As shown, an embodiment of the present invention provides a system for measuring the excavation depth and track height of a railway screening machine, including a communicating vessel unit, a plurality of liquid level sensors, a data processing unit 6 and a display unit 7.

[0025] The communicating vessel unit includes a plurality of mutually connected sealed containers and a water storage tank 1 connected to the sealed containers, which are respectively installed at the measuring reference point of the rail cleaning machine, the descending guide groove (including the left descending guide groove and the right descending guide groove), and the track lifting device. Each sealed container and the water storage tank 1 together constitute a communicating vessel.

[0026] A plurality of liquid level sensors are respectively installed in each sealed container, and are used to measure the liquid level height at the measurement reference point position, the descending guide groove (including the left descending guide groove and the right descending guide groove), and the track lifting device, and can be respectively named as the reference sensor 2, the left descending guide groove sensor 3, the right descending guide groove sensor 4, and the track lifting device sensor 5. In this embodiment, the measurement reference point position of the rail cleaning and screening machine is the position of the bogie when not excavated. Each liquid level sensor can adopt a high-precision water level pressure sensor with a measurement range of 0-1000mm and an accuracy of ±1mm. In this embodiment, each liquid level sensor also has an analog-to-digital conversion function, that is, after measuring the liquid level height, the measured liquid level height is converted into a 16-bit digital signal and output to the data processing unit 6.

[0027] The data processing unit 6 is connected to each liquid level sensor and the display unit 7, and is used to receive signals from each liquid level sensor, calculate the excavation depth and the track height of the descending guide groove, and send the calculated results to the display unit 7. When the data processing unit 6 calculates the excavation depth and the track height of the descending guide groove, the liquid level at the measurement reference point position is used as a reference to subtract the height between the liquid level sensor at the measurement reference point position and the liquid level sensor at the descending guide groove as the descending guide groove zero point, and the difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the descending guide groove zero point is the excavation depth; the liquid level at the measurement reference point position is used as a reference to subtract the height between the liquid level sensor at the measurement reference point position and the liquid level sensor at the track lifting device as the track lifting device zero point, and the difference between the liquid level height measured by the liquid level sensor at the track lifting device and the track lifting device zero point is the track lifting height. In this embodiment, the data processing unit 6 includes an industrial-grade embedded computer with integrated analog-to-digital conversion, filtering algorithm and data fusion functions, and is connected to the railway cleaning machine and the main control system (can communicate with the main control system in real time through the CAN bus protocol).

[0028] The display unit 7 receives the result calculated by the data processing unit 6 and displays it. In this embodiment, the display unit 7 includes a display screen, which is connected to the railway screening machine through the main control system, so that the result calculated by the data processing unit 6 is displayed on the display screen through the main control system. The display screen can be a touch screen to facilitate information input. It is preferably supported to display multiple windows and can display a variety of real-time data.

[0029] This embodiment also provides a method for measuring the excavation depth and track height of a railway screen cleaning machine, using the above-mentioned system for measuring the excavation depth and track height of a railway screen cleaning machine, the method comprising: Initialization, including: clearing the liquid level sensor at the measurement reference point; setting the zero point of the descending guide groove and the zero point of the track-lifting device, taking the liquid level at the measurement reference point as the reference minus the height between the liquid level sensor at the measurement reference point and the liquid level sensor at the descending guide groove as the zero point of the descending guide groove, and taking the liquid level at the measurement reference point as the reference minus the height between the liquid level sensor at the measurement reference point and the liquid level sensor at the track-lifting device as the zero point of the track-lifting device (the zero point of the descending guide groove and the zero point of the track-lifting device may be the same); Real-time measurement and display, including: using liquid level sensors to measure the liquid level heights at the measurement reference point, the descending guide groove, and the road lifting device respectively; sending the liquid level height data to the data processing unit, and the data processing unit calculates the excavation depth and the road lifting height. The difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the zero point of the descending guide groove is the excavation depth, and the difference between the liquid level height measured by the liquid level sensor at the road lifting device and the zero point of the road lifting device is the road lifting height; and then displaying the calculated results through the display unit. In this embodiment, each liquid level sensor collects data at a frequency of 100Hz, and the data processing unit updates the display interface 10 times per second.

[0030] The existing technology currently uses mechanical measurement or electronic sensor measurement. The mechanical measurement method has low measurement accuracy, and the mechanical parts are prone to wear during long-term use, resulting in increasing measurement errors; and the readings rely on manual visual inspection, which is inefficient and prone to errors, and it is difficult to meet the needs of modern automated operations. In the complex electromagnetic environment of the railway, the electronic sensor measurement method is easily disturbed, affecting the measurement accuracy; the measurement method of drawing thin steel wire is not only prone to breakage, but also poses a threat to the safety of operators, and there are major hidden dangers in actual operations.

[0031] Compared with the prior art, this embodiment has the following advantages: High-precision measurement: This measurement system can accurately measure the excavation depth of the descending guide groove and the track height, strictly controlling the error within a very small range, and fully meeting the requirements of railway track bed cleaning and screening operations for high-precision measurement; Strong stability: Because it is not subject to electromagnetic interference, it can adapt well to the complex working environment of the railway, greatly reducing the probability of measurement errors and failures, and ensuring the stable operation of the equipment; Real-time monitoring and feedback: Operators can obtain real-time measurement data through the display unit and adjust the operating parameters of the screen cleaning machine in time according to actual conditions, effectively improving the operating quality and efficiency; High cost-effectiveness: Compared with electronic sensor measurement methods, this system has lower cost and simpler and more convenient maintenance, which significantly reduces the use and maintenance costs of the equipment.

[0032] In short, this embodiment can significantly improve the accuracy and safety of cleaning and screening operations, reduce manual intervention, and meet the needs of efficient construction under complex roadbed conditions.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for measuring the excavation depth and track height of a railway cleaning machine, characterized in that: It includes a communicating unit, a plurality of liquid level sensors, a data processing unit and a display unit; the communicating unit includes a plurality of mutually connected sealed containers, which are respectively installed at the measuring reference point position, the descending guide groove and the track lifting device of the rail cleaning and screening machine; a plurality of liquid level sensors are respectively installed in each sealed container, and are used to respectively measure the liquid level height at the measuring reference point position, the descending guide groove and the track lifting device; the data processing unit connects each liquid level sensor and the display unit, and is used to receive signals from each liquid level sensor, calculate the excavation depth and the track lifting height of the descending guide groove, and send the calculated results to the display unit; the display unit receives the results calculated by the data processing unit and displays them.

2. The railway screening machine excavation depth and track height measurement system according to claim 1, characterized in that: The communication unit further comprises a water storage tank communicated with the sealed container.

3. The railway screening machine excavation depth and track height measurement system according to claim 1, characterized in that: The measurement reference point position of the rail cleaning machine is the bogie position when not excavated.

4. The railway screening machine excavation depth and track height measurement system according to claim 1, characterized in that: After measuring the liquid level height, the liquid level sensor converts the measured liquid level height into a 16-bit digital signal and outputs it to the data processing unit.

5. The railway screening machine excavation depth and track height measurement system according to claim 1, characterized in that: When the data processing unit calculates the excavation depth and the track lifting height of the descending guide groove, the liquid level at the measuring reference point position is used as a reference minus the height between the liquid level sensor at the measuring reference point position and the liquid level sensor at the descending guide groove as the zero point of the descending guide groove, and the difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the zero point of the descending guide groove is the excavation depth; the liquid level at the measuring reference point position is used as a reference minus the height between the liquid level sensor at the measuring reference point position and the liquid level sensor at the track lifting device as the zero point of the track lifting device, and the difference between the liquid level height measured by the liquid level sensor at the track lifting device and the zero point of the track lifting device is the track lifting height.

6. The railway screening machine excavation depth and track height measurement system according to claim 1, characterized in that: The data processing unit includes an industrial-grade embedded computer with integrated analog-to-digital conversion, filtering algorithm and data fusion functions, and is connected to the railway cleaning machine and the main control system.

7. The railway screening machine excavation depth and track height measurement system according to claim 6, characterized in that: The display unit comprises a display screen, and the display screen is connected to the railway screening machine through a main control system, so that the result calculated by the data processing unit is displayed on the display screen through the main control system.

8. A method for measuring the excavation depth and track height of a railway cleaning machine, characterized in that: Using the railway screening machine excavation depth and track height measurement system according to any one of claims 1 to 7, the method comprises: Initialization includes: clearing the liquid level sensor at the measuring reference point; setting the zero point of the descending guide groove and the zero point of the track-lifting device, taking the liquid level at the measuring reference point as the reference minus the height between the liquid level sensor at the measuring reference point and the liquid level sensor at the descending guide groove as the zero point of the descending guide groove, and taking the liquid level at the measuring reference point as the reference minus the height between the liquid level sensor at the measuring reference point and the liquid level sensor at the track-lifting device as the zero point of the track-lifting device; Real-time measurement and display, including: using a liquid level sensor to measure the liquid level heights at the measurement reference point, the descending guide groove, and the road lifting device respectively; sending the liquid level height data to a data processing unit, which calculates the excavation depth and the road lifting height. The difference between the liquid level height measured by the liquid level sensor at the descending guide groove and the zero point of the descending guide groove is the excavation depth, and the difference between the liquid level height measured by the liquid level sensor at the road lifting device and the zero point of the road lifting device is the road lifting height; and then displaying the calculated result through a display unit.

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