Anti-overturning device for self-propelled special equipment

Abstract

The utility model discloses a kind of self-wheel operation special equipment anti-overturning devices, including inclination sensor, joint control device, joint control device includes central controller, intelligent acquisition end, audible and visual alarm terminal, power supply unit, screen display unit, optical signal alarm unit;Central controller is connected with intelligent acquisition end, audible and visual alarm terminal, screen display unit, optical signal alarm unit respectively, intelligent acquisition end is connected with inclination sensor, and power supply unit powers each module.The anti-overturning device not only realizes the real-time digital display and light warning of line outer rail superhigh value monitoring, and effectively prevents driver in superhigh section illegal use of lifting platform, while make up the operation table account LKJ data cannot accurately reflect the superhigh value change of outer rail superhigh curve full length each section, leading to increase of catenary maintenance operation time, range limitation.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-tipping devices, specifically referring to an anti-tipping device for self-propelled special equipment. Background Technology

[0002] The China State Railway Group's management rules for track maintenance vehicles have lowered the external rail overheight risk control value from 125mm to 120mm. However, daily operations rely solely on the LKJ external rail overheight data table for understanding external rail overheight, which cannot reflect the specific external rail overheight values ​​for each section. It is necessary to calculate the overheight value of the circular curve through the transition curve value. Furthermore, the design principle of the track transition curve is from low to high, but the LKJ data table only reflects a general value for a section and cannot reflect the specific overheight value from low to high on the transition curve, which poses a risk of vehicle overturning. Therefore, a technical prevention device that can monitor external rail overheight in real time and provide warnings is needed.

[0003] Meanwhile, self-propelled special equipment faces a certain risk of overturning when performing maintenance work on platforms in ultra-high sections of the outer rail. Currently, the control of this risk relies solely on human intervention. Both situations—such as operators failing to include ultra-high sections of the outer rail in the work permit management system as required, and the lack of mutual control alerts for ultra-high sections already included in the work permit management system—can potentially cause self-propelled special equipment to overturn, resulting in general Class B or higher traffic accidents. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-tipping device for self-propelled special equipment. This anti-tipping device not only realizes real-time digital display and light warning of the superelevation value of the outer rail, but also effectively prevents the driver from illegally using the lifting platform in superelevation sections. At the same time, it makes up for the fact that the LKJ data in the work log cannot accurately reflect the changes in superelevation values ​​of various sections along the entire length of the superelevation curve, which leads to increased contact network maintenance time and limited scope.

[0005] To achieve the above objectives, this utility model provides an anti-tipping device for self-propelled special equipment, comprising a tilt sensor and a control unit. The control unit includes a central controller, an intelligent acquisition terminal, an audible and visual alarm terminal, a power supply unit, a screen display unit, and a light signal alarm unit. The central controller is connected to the intelligent acquisition terminal, the audible and visual alarm terminal, the screen display unit, and the light signal alarm unit, respectively. The intelligent acquisition terminal is connected to the tilt sensor, and the power supply unit supplies power to each module.

[0006] As a further embodiment of this invention, the tilt sensor is a "liquid pendulum" type tilt sensor, which is installed at the bottom of the locomotive.

[0007] As a further embodiment of this utility model: the central controller includes an MCU unit, a communication unit, a data processing unit, a control unit, and a power supply module; the MCU unit controls the communication unit, the data processing unit, and the control unit respectively, and the power supply module supplies power to the other units;

[0008] The central controller's communication unit receives real-time data from the tilt sensor and sends it to the MCU unit. After statistical recording, the MCU unit sends the data to the data processing unit for data processing and conversion. After processing, the data is sent to the data storage section for storage. The MCU unit identifies the processed data content, generates control commands according to the pre-designed control logic, and sends them to the control unit for execution.

[0009] As a further embodiment of this utility model: the MCU unit is a 32-bit STM32F103 series microcontroller.

[0010] As a further solution of this utility model: the intelligent acquisition terminal acquires signals, and photoelectric isolation is adopted in the signal acquisition process. The acquisition object is connected to the optocoupler for isolation, and the isolation voltage reaches 2500V or above. The isolation voltage of more than 2500V effectively ensures the reliability of the system and ensures that the normal operation of the self-propelled equipment is not affected during the data acquisition process.

[0011] As a further aspect of this utility model: the sound and light alarm terminal is an alarm device that simultaneously emits sound and various colored lights to issue an alarm signal.

[0012] As a further embodiment of this utility model: the optical signal alarm unit associates the level of the outer rail's ultra-high risk with the color of the warning light.

[0013] As a further embodiment of this utility model, the control device is installed inside the locomotive.

[0014] Compared with existing technologies, this utility model utilizes tilt sensors to dynamically reflect changes in superelevation, obtaining real-time values ​​of the superelevation of the outer rail during the operation of the work vehicle. This expands the operational range of work vehicles without leveling devices and reduces unnecessary use of leveling devices in work vehicles with leveling devices. It also enables real-time digital display and light warning of the superelevation value of the outer rail, effectively preventing drivers from illegally using the lifting platform in superelevation sections. Furthermore, it compensates for the increased contact network maintenance time and limited scope caused by the inability of the LKJ data in the work log to accurately reflect the changes in superelevation values ​​across different sections of the entire superelevation curve. Attached Figure Description

[0015] Figure 1 This is a structural block diagram of the entire utility model.

[0016] Figure 2 This is a structural block diagram of the central controller in this utility model.

[0017] Figure 3 This is the circuit diagram of the intelligent acquisition terminal in this utility model.

[0018] Figure 4 This is the circuit diagram of the audible and visual alarm terminal in this utility model.

[0019] Figure 5 This is a circuit diagram of the power supply unit in this utility model.

[0020] Figure 6 This is a circuit diagram of the screen display unit in this utility model.

[0021] Figure 7 This is a circuit diagram of the optical signal alarm unit in this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, the anti-tipping device for self-propelled special equipment includes a tilt sensor and a control unit. The control unit includes a central controller, an intelligent acquisition terminal, an audible and visual alarm terminal, a power supply unit, a screen display unit, and a light signal alarm unit. The central controller is connected to the intelligent acquisition terminal, the audible and visual alarm terminal, the screen display unit, and the light signal alarm unit. The intelligent acquisition terminal is connected to the tilt sensor, and the power supply unit supplies power to each module.

[0024] A tilt sensor is used to detect the levelness of a system. Because a dual-axis tilt sensor can simultaneously measure levelness in two directions, it can be used to detect the levelness of the entire surface being measured. Tilt sensors can be classified into three types based on their working principle: "liquid pendulum," "solid pendulum," and "gas pendulum." All three types are based on the fundamental theory of Newton's second law. According to Newton's second law, it is impossible to measure velocity within a system, but its acceleration can be measured. Given the initial velocity, the linear velocity can be obtained through integration, and then the linear displacement can be calculated. Therefore, a tilt sensor is essentially an acceleration sensor utilizing the principle of inertia. When the tilt sensor is stationary, it is only subject to gravity; therefore, the angle between its vertical axis of gravity and the sensor's sensitive axis is the tilt angle. The attitude angle of the sensor's sensing element relative to the earth, i.e., the angle between the sensor and the earth's gravity (tilt angle), is converted into an analog signal or a pulse signal.

[0025] The tilt sensor has the advantages of filtering function, tilt measurement, high precision measurement, strong stability, large load bearing range and good impact durability. It can monitor and warn of the level of the road conditions of self-propelled equipment in real time, and provide alarm reminders when there is danger on the lifting platform.

[0026] This invention employs a "liquid pendulum" type tilt sensor, installed at the bottom of the work vehicle. To enhance measurement accuracy, a six-axis tilt sensor is used. The control unit is located inside the work vehicle.

[0027] like Figure 2 As shown, the central controller includes an MCU unit, a communication unit, a data processing unit, a control unit, and a power supply module. The MCU unit controls the communication unit, data processing unit, and control unit, while the power supply module supplies power to the remaining units. Its main function is to process real-time data from the high-precision tilt sensor and make judgments based on preset threshold values, controlling the output of alarm information when necessary.

[0028] The central controller's communication unit receives real-time data from the high-precision tilt sensor and sends it to the MCU unit. The MCU unit statistically records the data and then sends it to the data processing unit for further processing and conversion. After processing, the data is stored in the data storage section. The MCU unit identifies the processed data content, generates control commands according to the pre-designed control logic, and sends them to the control unit for execution. The power supply unit provides power to the other four unit modules.

[0029] Since the MCU unit needs to perform floating-point operations, the computing power of a regular 8-bit microcontroller cannot meet the requirements. Therefore, a 32-bit STM32F103 series microcontroller was selected. This series of microcontrollers can operate at a maximum frequency of 72MHz and achieves 1.25DMips / MHz (Dhrystone 2.1) with zero-wait-cycle memory access. It features single-cycle multiplication and hardware division, making it very suitable for processing high-precision, large amounts of data.

[0030] The intelligent acquisition terminal collects signals using opto-isolation. The object being acquired is connected to an optocoupler for isolation, with an isolation voltage exceeding 2500V. This higher-than-2500V isolation voltage effectively ensures system reliability and guarantees that the normal operation of the self-propelled equipment is not affected during data acquisition. The circuit implementation is as follows: Figure 3 As shown.

[0031] The audible and visual alarm terminal is designed to meet specific requirements regarding alarm volume and installation location. It's an alarm device that simultaneously emits sound and various colored lights to warn people. When the outer rail of a self-propelled machine exceeds a certain warning value, the terminal will activate an audible and visual alarm. This part uses a high-power audio circuit, ensuring the alarm sound is clearly audible even in noisy environments. Its circuitry is implemented as follows: Figure 4 As shown.

[0032] In the diagram, C52 is a DC blocking capacitor, which filters out the DC component of the audio signal, allowing only the AC audio signal to pass. W2 is an adjustable potentiometer, which adjusts the volume. U14 is the driver chip for speaker J5. C55 and R45 determine the amplification factor of the audio signal.

[0033] The power supply unit has output overcurrent, overvoltage protection, and short circuit protection functions. The circuit diagram of the power supply section is shown below. Figure 5 As shown.

[0034] In the diagram, U1 is a voltage conversion module, which converts 24V voltage to a usable 12V voltage for the system. F1 is a fuse, providing circuit protection. C1, C2, C3, C4, and C5 are all filter capacitors, improving circuit reliability. T1 is a common-mode inductor, which eliminates interference caused by power mode signals.

[0035] The screen display unit uses a color touch screen, which consists of a capacitive touchscreen, indicator lights, a controller, a PLC, and a power supply module. The screen is primarily used for human-machine interface interaction, allowing users to input correct dates and times, and display the overall system status. The human-machine interface is programmed using a configuration method, which is simple to program and reliable in application. The interface between the display and the main controller is an RS232 interface, which is easy to install and flexible in application. The display's composition principle is as follows... Figure 6 As shown.

[0036] The optical signal alarm unit uses high-brightness diodes and an industrial modular design, enabling it to operate normally in various harsh industrial environments. Its control circuit principle is as follows: Figure 7 As shown, visual warnings using green, yellow, and red light strips enhance the risk control level of the work vehicle.

[0037] The entire device is mounted on a work vehicle.

[0038] During the operation of the work vehicle, the tilt sensor monitors the height in real time and transmits the signal to the control unit. The communication unit of the central controller in the control unit receives the real-time data from the tilt sensor and sends it to the MCU unit. After statistical recording, the MCU unit sends the data to the data processing unit for data processing and conversion. After processing, the data is sent to the data storage section for storage. The MCU unit identifies the processed data content, generates control commands according to the pre-designed control logic, and sends them to the control unit for execution. When the outer rail of the self-propelled equipment exceeds a certain warning value of 120mm, the screen display unit terminal will issue an audible and visual alarm. This part uses a high-power audio circuit, so the alarm sound can be heard clearly even in noisy environments. At the same time, the light signal alarm unit associates the level of outer rail height risk with the color of the warning light. Through the visual warning of green, yellow, and red light bars, the risk control level of the work vehicle is improved.

[0039] This invention enables dynamic detection and improves maintenance efficiency. The device dynamically reflects changes in superelevation, providing real-time data on the specific superelevation of the outer rail during vehicle operation. This expands the operational range of vehicles without leveling devices and reduces unnecessary use of leveling devices on vehicles with them. An optical alarm unit is added, linking the superelevation risk level to warning light colors. Visual warnings using green, yellow, and red light strips enhance risk control. A control device is added to link the collected superelevation data to the platform's power take-off switch, using voice alarms to correct driver violations such as using the platform when superelevation exceeds 120mm. The device also features a traceability analysis function; all historical superelevation alarm records are stored and can be queried or exported via USB for post-accident analysis of driver violations.

Claims

1. An anti-tipping device for self-propelled special equipment, characterized in that, It includes a tilt sensor and a control unit. The control unit includes a central controller, an intelligent acquisition terminal, an audible and visual alarm terminal, a power supply unit, a screen display unit, and a light signal alarm unit. The central controller is connected to the intelligent acquisition terminal, the audible and visual alarm terminal, the screen display unit, and the light signal alarm unit. The intelligent acquisition terminal is connected to the tilt sensor. The power supply unit supplies power to each module.

2. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The tilt sensor is a "liquid pendulum" type tilt sensor, which is installed at the bottom of the work vehicle.

3. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The central controller includes an MCU unit, a communication unit, a data processing unit, a control unit, and a power supply module; the MCU unit controls the communication unit, the data processing unit, and the control unit respectively, and the power supply module supplies power to the other units; The central controller's communication unit receives real-time data from the tilt sensor and sends it to the MCU unit. After statistical recording, the MCU unit sends the data to the data processing unit for data processing and conversion. After processing, the data is sent to the data storage section for storage. The MCU unit identifies the processed data content, generates control commands according to the pre-designed control logic, and sends them to the control unit for execution.

4. The anti-tipping device for self-propelled special equipment according to claim 3, characterized in that, The MCU unit is a 32-bit STM32F103 series microcontroller.

5. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The intelligent acquisition terminal acquires signals, and opto-isolation is adopted during the signal acquisition process. The acquisition object is connected to an optocoupler for isolation, and the isolation voltage reaches 2500V or higher. The isolation voltage of more than 2500V effectively ensures the reliability of the system and ensures that the normal operation of the self-propelled equipment is not affected during the data acquisition process.

6. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The aforementioned sound and light alarm terminal is an alarm device that simultaneously emits sound and various colored lights to send out alarm signals.

7. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The optical signal alarm unit associates the level of extreme risk on the outer rail with the color of the warning light.

8. The anti-tipping device for self-propelled special equipment according to claim 1, characterized in that, The control unit is installed inside the work vehicle.

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