Automatic anti-toppling detection and alarm device for rail working vehicle platform
By installing high-precision tilt and displacement sensors on the rail work vehicle, combined with an alarm device that uses dynamic threshold calculation and logical judgment, the problem of inaccurate tilt risk assessment in existing technologies has been solved, thus improving the safety of the work vehicle and the stability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY XIAN GRP CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-26
AI Technical Summary
The existing tilt alarm devices on rail work vehicles cannot accurately distinguish between static tilt and dynamic tipping risks, resulting in a high false alarm rate and an inability to provide timely warnings, making it difficult to ensure operational safety.
It employs a high-precision dual-axis digital tilt sensor and a Hall displacement sensor, combined with an STM32F407 microcontroller for dynamic threshold calculation and logical judgment, to monitor the platform's tilt angle and motion status in real time, and alerts operators to potential tipping risks through an audible and visual alarm unit.
It enables accurate assessment of tipping risk of the rail-mounted work vehicle platform, reduces false alarm rate, improves operational safety and system stability, and reduces maintenance costs.
Smart Images
Figure CN224287634U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rail work vehicles, and specifically relates to an automatic detection and alarm device for preventing the tipping of a rail work vehicle platform. Background Technology
[0002] Track maintenance vehicles are indispensable key equipment in the field of railway line maintenance, playing a vital role in high-altitude operations such as overhead contact line maintenance and signal equipment installation and commissioning. Their work platforms have diverse operational functions, enabling frequent lifting, rotating, and other operations to meet the requirements of different heights and angles.
[0003] However, because railway tracks are designed with train safety and comfort in mind, superelevation is used. For example, on some curved sections, the superelevation reaches 120mm. While this design helps trains maintain stability when traversing curves at high speeds, it presents new challenges for track maintenance vehicles. When these vehicles are operating on curves, the combined effects of superelevation and platform movement can cause the vehicle's center of gravity to shift, or the platform to become unstable during movement. This could potentially lead to tipping accidents, seriously threatening the safety of personnel and the normal operation of the equipment.
[0004] Among existing technologies, some railcars are equipped with simple tilt alarm devices. The core principle of this device is to use tilt sensors to detect the vehicle's tilt angle in real time. Once the detected tilt angle exceeds a pre-set fixed threshold, the device immediately triggers an alarm signal, alerting the operator to the potential risk of the vehicle tipping over. Furthermore, on some railcars, the assessment of vehicle stability still heavily relies on the operator's visual observation. The operator uses their visual perception to make a preliminary assessment of the vehicle's tilt state and decides whether to take appropriate safety measures. This method, relying on manual judgment, lacks scientific and accurate quantitative basis, is highly subjective, and is difficult to effectively ensure operational safety.
[0005] Current technological methods have the following shortcomings:
[0006] 1) Existing tilt alarm devices generally use static tilt thresholds, such as setting a fixed angle θ = 5° as the alarm trigger condition. This static threshold setting method does not fully take into account the dynamic changes in superelevation and gauge of the outer rail under different track conditions.
[0007] 2) The existing alarm system has a high false alarm rate during operation. Specifically, when the work vehicle is stationary, if the tilt angle of the vehicle exceeds the set threshold, the alarm system will immediately trigger. However, on railway lines, due to terrain undulations and other factors, the track itself may have a certain gradient, which will cause the work vehicle to naturally tilt to a certain extent when stationary.
[0008] 3) Existing technologies cannot accurately distinguish between "static tilting" and "dynamic tipping risk." This results in alarm systems either being slow to react to dynamic tipping risks and failing to issue timely warnings, or being overly sensitive to static tilting, frequently triggering unnecessary alarms. Consequently, the accuracy and practicality of the entire detection system are reduced, making it difficult to meet the safety requirements of rail-operated vehicles in complex operating environments.
[0009] Given the above background, there is an urgent need for a device that can dynamically determine whether a rail-operated vehicle is at risk of tipping over. Utility Model Content
[0010] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an automatic detection and alarm device for preventing the tipping of a rail work vehicle platform.
[0011] To achieve the above objectives, the present invention adopts the following technical solution:
[0012] An automatic anti-tipping detection and alarm device for a rail work vehicle platform includes a work vehicle platform, an angle sensor installed at the bottom of the work vehicle platform, a hydraulic cylinder installed at the connection between the work vehicle platform and the support rod, a displacement sensor installed on the hydraulic cylinder, and the angle sensor and the displacement sensor connected to a data processing unit.
[0013] The tilt sensor is a high-precision dual-axis digital tilt sensor.
[0014] The displacement sensor is a Hall sensor.
[0015] The data processing unit uses an STM32F407 microcontroller.
[0016] The tilt sensor, displacement sensor, and data processing unit are connected by a shielded cable.
[0017] The microcontroller is connected to the audible and visual alarm unit via a GPIO interface.
[0018] The sound and light alarm unit includes a buzzer and an LED indicator, with the buzzer's alarm sound intensity ≥85dB / m.
[0019] The data processing unit has a built-in dynamic threshold calculation algorithm and logical judgment program.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] This utility model provides an automatic anti-tipping detection and alarm device for a rail-operated vehicle platform. It includes a platform, a tilt sensor installed at the bottom of the platform, a hydraulic cylinder located at the connection between the platform and a support rod, and a displacement sensor mounted on the hydraulic cylinder. The tilt sensor and displacement sensor are connected to a data processing unit. The device uses the tilt sensor at the bottom of the platform and the displacement sensor on the hydraulic cylinder to monitor the platform's tilt angle and movement status in real time and accurately. The collected data signals are sent to the data processing unit for processing and judgment. Based on the real-time dynamic signal changes of the platform, it can determine whether there is a risk of tipping over, triggering a rapid and prominent audible and visual alarm unit to avoid static false alarms. This device has a simple and reasonable structure, is easy to install and maintain, effectively prevents platform tipping accidents, ensures safety, and improves efficiency, demonstrating significant advantages and application value.
[0022] Furthermore, the tilt sensor, displacement sensor, and data processing unit are connected by a shielded cable. Thanks to its strong electromagnetic shielding performance, it can effectively block external interference, ensure accurate and stable data transmission, reduce noise impact, enhance noise resistance, and adapt to complex environments such as high temperature, humidity, and vibration. This reduces the risk of system failure, extends equipment life, reduces maintenance costs, and ensures the stable and reliable operation of the anti-tipping automatic detection and alarm device. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of this utility model;
[0025] The following are the labels in the attached diagram: 1. Work platform; 2. Hydraulic cylinder; 3. Tilt sensor; 4. Support rod. Detailed Implementation
[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0034] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.
[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0036] Example 1
[0037] like Figure 1 As shown, an automatic anti-tipping detection and alarm device for a rail work vehicle platform includes a work vehicle platform 1, an inclination sensor 3 installed at the center of the bottom of the work vehicle platform 1, a hydraulic cylinder 2 installed at the connection between the work vehicle platform 1 and the support rod 4, a displacement sensor installed on the hydraulic cylinder 2, and the inclination sensor 3 and the displacement sensor connected to a data processing unit.
[0038] Preferably, the tilt sensor 3 is a high-precision dual-cycle digital tilt sensor, such as SICK DTI100, used to collect the tilt angle data of the work vehicle platform 1 on the X and Y axes in real time.
[0039] Preferably, the displacement sensor is a Hall sensor, such as A3144, used to detect in real time whether the work vehicle platform 1 is in a lifting or rotating state.
[0040] Preferably, the data processing unit is based on an STM32F407 microcontroller and is used to receive tilt data from the tilt sensor 3 and status signals from the displacement sensor of the work vehicle platform 1. The data processing unit has a built-in dynamic threshold calculation algorithm and logic judgment program.
[0041] Preferably, the work vehicle platform 1 integrates an audible and visual alarm unit, including a buzzer and an LED indicator. The audible and visual alarm unit is connected to the microcontroller through a GPIO interface, and the alarm sound intensity is ≥85dB / m.
[0042] Example 2
[0043] An automatic detection and alarm device for preventing tipping over a rail work vehicle platform, the working method of which is as follows:
[0044] 1) A high-precision dual-axis digital tilt sensor 3 (such as SICKDTI100) installed at the center of the bottom of the work vehicle platform 1 operates continuously, collecting real-time tilt angle data of the work vehicle platform 1 on the X and Y axes. This sensor possesses high precision characteristics, enabling it to accurately detect minute tilt changes in both directions, ensuring the accuracy and reliability of the collected data. The tilt sensor 3 transmits the collected tilt angle data to the data processing unit in the form of electrical signals.
[0045] A Hall displacement sensor (such as A3144) mounted on the hydraulic cylinder monitors the movement status of the work platform 1 in real time. By sensing the movement of the hydraulic cylinder 2, it determines whether the work platform is in a lifting or rotating state. The displacement sensor transmits the detected platform status signals, such as the start, stop, and speed of lifting or rotating, to the data processing unit in the form of electrical signals.
[0046] 2) The data processing unit based on the STM32F407 microcontroller continuously receives data signals from the tilt sensor 3 and the displacement sensor. The microcontroller has powerful data processing capabilities, enabling it to receive and store this data quickly and accurately.
[0047] The data processing unit incorporates a dynamic threshold calculation algorithm. This algorithm dynamically calculates the safe threshold for tilt angle based on the real-time status of the work platform (such as lifting speed, rotation angle, etc.) and historical data. For example, when the platform is in a rapid lifting state, its allowable tilt angle range may be correspondingly reduced due to factors such as inertia. The dynamic threshold calculation algorithm can adjust the safety threshold in a timely manner according to these actual conditions to ensure accurate judgment of the platform status.
[0048] The calculation formula for the dynamic threshold calculation algorithm is as follows:
[0049] Based on the superelevation of the outer rail (H=120mm) and the standard gauge (L=1435mm), the critical inclination angle θ is calculated using geometric relationships:
[0050] θ = arcsin(H / L)
[0051] The threshold θ is automatically corrected according to the actual track gauge (L), and the data is pre-stored in the microcontroller.
[0052] 3) The data processing unit has a built-in logic judgment program that compares the real-time collected tilt angle data with the dynamically calculated safety threshold. Simultaneously, it combines this with platform status signals to determine whether the work vehicle platform poses a risk of tipping over. The specific logic judgment process is as follows:
[0053] If the tilt angle data exceeds the current dynamically calculated safety threshold, and the platform is in a motion state that may increase the risk of tipping over, such as rapid lifting or large-scale rotation, then the work vehicle platform is determined to have a risk of tipping over.
[0054] If the tilt angle data does not exceed the safety threshold, but the platform status is abnormal, such as sudden loss of control or abnormal movement speed, it is determined that there may be a potential risk of tipping over.
[0055] When the data processing unit's logic determines that the work vehicle platform has or may have a tipping risk, it immediately triggers an alarm signal. The microcontroller sends an alarm command to the audible and visual alarm unit integrated on the work vehicle platform via the GPIO interface. Upon receiving the alarm command, the audible and visual alarm unit activates both the buzzer and the LED indicator. The buzzer emits a loud alarm sound with a volume ≥85dB / m, ensuring that it can be clearly heard by the operator at the work site; the LED indicator flashes, conspicuously alerting the operator to the dangerous state of the work vehicle platform. The alarm will continue until the operator takes appropriate safety measures to restore the work vehicle platform to a safe state, and the data processing unit's logic determines that the tipping risk has been eliminated, at which point the alarm will stop.
[0056] Once the operator takes measures, such as stopping the platform's movement or adjusting its position, to restore the work vehicle platform to a safe state, the data processing unit re-collects tilt angle data and platform status data, and performs a new round of logical judgments.
[0057] Finally, it should be noted that the above embodiments only describe the basic principles, main features, and advantages of this utility model. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.
Claims
1. A track maintenance vehicle platform tip-over automatic detection alarm device, characterized in that, The system includes a work vehicle platform (1), on which an angle sensor (3) is installed at the bottom. A hydraulic cylinder (2) is located at the connection between the work vehicle platform (1) and the support rod (4). A displacement sensor is installed on the hydraulic cylinder (2). The angle sensor (3) and the displacement sensor are connected to a data processing unit.
2. The track maintenance vehicle platform tip-over automatic detection and alarm device of claim 1, wherein, The tilt sensor (3) is a high-precision dual-axis digital tilt sensor.
3. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 1, characterized in that, The displacement sensor is a Hall sensor.
4. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 1, characterized in that, The data processing unit uses an STM32F407 microcontroller.
5. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 4, characterized in that, The tilt sensor (3), displacement sensor and data processing unit are connected by a shielded cable.
6. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 4, characterized in that, The microcontroller is connected to the audible and visual alarm unit via a GPIO interface.
7. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 6, characterized in that, The sound and light alarm unit includes a buzzer and an LED indicator, with the buzzer's alarm sound intensity ≥85dB / m.
8. The automatic detection and alarm device for preventing tipping over of a railcar platform according to claim 1, characterized in that, The data processing unit has a built-in dynamic threshold calculation algorithm and logical judgment program.