Self-propelled rail car derailment alarm device

Abstract

The invention discloses a derailment alarm device for a self-propelled rail car. The derailment alarm device comprises a self-propelled rail car walking part and a derailment alarm device body. The self-propelled rail car walking part comprises a swing bolster, a wheel pair and a side frame; the two ends of the swing bolster are each provided with a side frame, the portions, on the inner sides of the side frames, of the swing bolster are each provided with a wheel pair, and the wheel pairs drive the self-propelled rail car to move through rolling friction between the wheel pairs and a steel rail. The derailment alarm device comprises a laser range finder, a tilt angle sensor and a signal processing module; the laser range finder is installed on the side face of the swing bolster and used for measuring the distance between the swing bolster and a steel rail. The tilt angle sensor is installed on the bottom face of the swing bolster and used for measuring the included angle of the swing bolster relative to the ground. The signal processing module is in communication connection with the laser range finder and the tilt angle sensor and used for judging whether the current self-propelled rail car has the derailment risk or not according to data transmitted by the laser range finder and the tilt angle sensor. According to the invention, the derailment abnormal information can be sent to the control system at the first time, so that the self-propelled rail car can make corresponding actions such as sudden stop and unloading, and greater damage to the self-propelled rail car caused by derailment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation equipment for metallurgical enterprises, and in particular to a derailment alarm device for a self-propelled rail vehicle. Background Art

[0002] Molten iron transfer vehicles are primarily used to transport high-temperature molten steel from the converter to the continuous casting machine. They pour the hot steel from the furnace into the transfer vehicle and transport it to the casting table of the continuous casting machine. Due to the high temperature of the molten steel, using conventional transfer vehicles presents a number of risks, such as splashing of molten steel and slag, which could cause burns to employees. With the continuous advancement of technology, molten steel transport vehicles are gradually becoming more automated and intelligent. For example, some advanced molten steel transport vehicles are equipped with automated control systems, enabling real-time communication between the vehicle and the ground, real-time monitoring of on-site operations, and remote control of operations.

[0003] For example, the patent application document with patent number 202011517137.6 discloses a self-propelled intelligent heavy-load molten iron transport rail car, including a large frame, a small frame, a traction bogie, a large rocker, a load-bearing bogie, an electrical control cabinet, a supercapacitor, a flame-retardant and heat-insulating carport, and an insulation device; the whole vehicle of the rail car is a centrally symmetrical structure, the large frame is located in the middle of the whole vehicle, and the two ends of the large frame are respectively connected to the small frame through a large center plate, and the lower part of the small frame is connected to the traction bogie through a center plate, and is connected to the large rocker through the center plate. The traction bogie is located on the outside of the lower part of the whole vehicle, and the lower parts of the two ends of the large rocker are respectively hinged to the load-bearing bogie through small plates. The load-bearing bogie is located in the lower middle part of the whole vehicle. A flame-retardant and heat-insulating carport is provided on the outside of the small frame, and the electrical control cabinet and supercapacitor are installed in the flame-retardant and heat-insulating carport. The insulation device is arranged on the upper plane of the large frame for insulating the molten iron tank.

[0004] The above technical solution completes remote positioning and transportation through remote signals sent by the centralized control center. It is easy to operate, accurate and reliable in positioning, highly efficient, and can prevent misoperation and molten iron splashing. It has unmanned and intelligent operation, smooth starting and stopping, accurate driving positioning, safety and reliability, and high work efficiency.

[0005] However, the molten iron transport railcar in the above technical solution lacks the necessary derailment monitoring and alarm devices, so that the operational safety of the molten iron transport railcar cannot be guaranteed, and there is a risk of causing other series of accidents after derailment.

[0006] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Summary of the Invention

[0007] The purpose of the present invention is to provide a self-propelled rail vehicle derailment alarm device to solve the defects in the prior art.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] A derailment alarm device for a self-propelled rail vehicle comprises a running gear of the self-propelled rail vehicle and a derailment alarm device arranged on the running gear of the self-propelled rail vehicle;

[0010] The self-propelled rail vehicle running gear includes a bolster, a wheel pair and a side frame; a side frame is provided at each end of the bolster, and a wheel pair is installed on the bolster inside the side frame. The wheel pair drives the self-propelled rail vehicle to move through rolling friction with the rail;

[0011] The derailment alarm device includes a laser rangefinder, a tilt sensor, and a signal processing module; the laser rangefinder is installed on the side of the bolster and is used to measure the distance between the bolster and the rail; the tilt sensor is installed on the bottom surface of the bolster and is used to measure the angle of the bolster relative to the ground; the signal processing module is respectively connected to the laser rangefinder and the tilt sensor for determining whether the current self-propelled rail vehicle has derailed based on the data transmitted by the laser rangefinder and the tilt sensor.

[0012] Furthermore, the bolster, wheel sets and side frames are rigidly connected to form an integral steel structure.

[0013] Furthermore, the detection end of the laser rangefinder is facing the rail, and the distance data between the bolster and the rail measured by it is sent to the signal processing module; the inclination sensor is horizontally installed on the bottom surface of the bolster, and the angle data of the bolster relative to the ground measured by it is sent to the signal processing module.

[0014] Furthermore, the input end of the signal processing module is communicatively connected to the laser rangefinder and the tilt sensor via cables, and the input end and output end of the signal processing module are communicatively connected to the control system of the self-propelled rail vehicle;

[0015] When the signal processing module receives the distance data and angle data, it compares them with the preset threshold. If the distance data and angle data are less than the threshold, it is determined that no derailment has occurred at the current moment, the current process ends, and the next round of derailment detection begins;

[0016] If the distance data and angle data received by the signal processing module are greater than the threshold, it is determined that derailment has occurred at the current moment. The signal processing module will then send an alarm signal to the control system of the self-propelled rail vehicle, and the control system will issue action instructions to the self-propelled rail vehicle to perform emergency stop, high-voltage power off, and traction motor unloading.

[0017] In summary, the present invention has the following beneficial effects:

[0018] By adding a derailment alarm device to the existing running gear of a self-propelled rail vehicle, the derailment alarm device can immediately send abnormal information of the derailment of the self-propelled rail vehicle to the control system of the self-propelled rail vehicle, so that the self-propelled rail vehicle can make corresponding emergency stops, unloading and other actions, thereby reducing greater damage to the self-propelled rail vehicle caused by derailment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the running gear of the traveling rail vehicle according to the present invention.

[0020] Figure 2 It is a side view of the running gear of the traveling rail vehicle according to the present invention.

[0021] Figure 3 This is a schematic diagram of the installation position of the derailment alarm device of the present invention.

[0022] Figure 4 It is a schematic diagram of the state of the self-propelled rail vehicle during derailment of the present invention.

[0023] Figure 5 The present invention is a schematic flow chart of the derailment alarm device. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to diagrams and specific embodiments.

[0025] like Figures 1 to 5 As shown, a derailment alarm device for a self-propelled rail vehicle proposed by the present invention comprises a self-propelled rail vehicle running gear and a derailment alarm device arranged on the self-propelled rail vehicle running gear;

[0026] The self-propelled rail vehicle running gear includes a bolster 3, a wheel pair 4 and a side frame 6; a side frame 6 is provided at each end of the bolster 3, and a wheel pair 4 is mounted on the bolster 3 inside the side frame 6. The wheel pair 4 drives the self-propelled rail vehicle to move through rolling friction with the rail 5;

[0027] The derailment alarm device includes a laser rangefinder 1, a tilt sensor 2 and a signal processing module; the laser rangefinder 1 is installed on the side of the bolster 3 and is used to measure the distance between the bolster 3 and the rail 5; the tilt sensor 2 is installed on the bottom surface of the bolster 3 and is used to measure the angle of the bolster 3 relative to the ground; the signal processing module is respectively connected to the laser rangefinder 1 and the tilt sensor 2 for communication, and is used to determine whether the current self-propelled rail vehicle has derailed based on the data transmitted by the laser rangefinder 1 and the tilt sensor 2.

[0028] Example

[0029] In this embodiment, the derailment alarm device is composed of a laser rangefinder 1, an inclination sensor 2, a signal processing module and the like. The running gear of the self-propelled rail vehicle is composed of three parts: a bolster 3, a wheel set 4, and a side frame 6. Figure 1 and Figure 2 As shown, the bolster 3, the wheel set 4, and the side frame 6 are rigidly connected to each other to form a relatively stable and fixed overall steel structure. The running gear of the self-propelled rail vehicle runs on and along the rail 5 and maintains a relatively fixed positional relationship with the rail 5.

[0030] like Figure 3 As shown, a laser rangefinder 1 is mounted on the side of the bolster 3 of the self-propelled rail vehicle running gear. It is used to measure the distance between the bolster 3 and the rail 5. Given that the bolster 3 is an important component of the self-propelled rail vehicle running gear, the laser rangefinder 1 can reflect the relative distance between the running gear and the rail 5, and thus indicate the state of the self-propelled rail vehicle on the rail 5. A tilt sensor 2 is mounted horizontally at the bottom of the bolster 3 to measure the angle between the bolster 3 and the ground, reflecting the overall posture of the self-propelled rail vehicle running gear.

[0031] When a self-propelled rail vehicle is in normal operation, the distance detected by the laser rangefinder 1 varies within a small range, excluding the influence of the rail 5 seam. This range is caused by the serpentine operation of the rail vehicle. Given the smoothness of the rail 5, the horizontal angle detected by the inclination sensor 2 varies within a small range due to the settlement of the rails on both sides and the height difference between the inner and outer rails at the curve.

[0032] like Figure 4 and Figure 5 As shown, when a self-propelled rail vehicle derails, the wheelset 4 deviates from its original trajectory and climbs atop the rail 5. The bolster 3's trajectory and relative position to the rail 5 shift synchronously, causing the distance between the bolster 3 and the rail 5 detected by the laser rangefinder 1 to vary significantly, significantly differing from and fluctuating from the normal distance. Because the wheelset 4 climbs atop the rail 5 during the derailment process, the entire running gear of the self-propelled rail vehicle tilts, creating a certain angle between the bolster 3 and the ground. The inclination sensor 2 detects a significant angle change between the bolster 3 and the horizontal plane.

[0033] The signal processing module is installed in the vehicle's electrical room. The distance and angle data detected by the laser rangefinder 1 and the inclination sensor 2 are transmitted to the signal processing module via a wired connection. The module compares and analyzes the two data sets, eliminating data fluctuations caused by interference factors. Only when both data fluctuate significantly and exceed the set allowable threshold will an alarm be issued indicating a possible derailment. The signal processing module transmits this alarm information to the vehicle's control system, which instructs the vehicle to perform actions such as emergency stop, high-voltage power disconnection, and traction motor unloading.

[0034] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description, and therefore should not be understood as limiting the present invention.

[0035] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-propelled rail vehicle derailment alarm device, characterized in that: It includes a self-propelled rail vehicle running gear and a derailment alarm device arranged on the self-propelled rail vehicle running gear; The self-propelled rail vehicle running gear comprises a bolster (3), a wheel pair (4) and a side frame (6); a side frame (6) is respectively provided at both ends of the bolster (3); a wheel pair (4) is respectively installed on the bolster (3) inside the side frame (6); the wheel pair (4) drives the self-propelled rail vehicle to move through rolling friction with the rail (5); The derailment alarm device comprises a laser rangefinder (1), an inclination sensor (2) and a signal processing module; the laser rangefinder (1) is installed on the side of a bolster (3) and is used to measure the distance between the bolster (3) and the rail (5); the inclination sensor (2) is installed on the bottom surface of the bolster (3) and is used to measure the angle between the bolster (3) and the ground; the signal processing module is respectively connected to the laser rangefinder (1) and the inclination sensor (2) for communication, and is used to determine whether the current self-propelled rail vehicle has derailed based on data transmitted by the laser rangefinder (1) and the inclination sensor (2).

2. The self-propelled rail vehicle derailment alarm device according to claim 1, characterized in that: The bolster (3), wheel set (4) and side frame (6) are rigidly connected to form an integral steel structure.

3. The self-propelled rail vehicle derailment alarm device according to claim 1, characterized in that: The detection end of the laser rangefinder (1) faces the rail (5), and the distance data between the bolster (3) and the rail (5) measured by the laser rangefinder (1) is sent to a signal processing module; the inclination sensor (2) is horizontally installed on the bottom surface of the bolster (3), and the angle data of the bolster (3) relative to the ground measured by the laser rangefinder (1) is sent to the signal processing module.

4. The self-propelled rail vehicle derailment alarm device according to claim 3, characterized in that: The input end of the signal processing module is communicatively connected to the laser rangefinder (1) and the tilt sensor (2) via cables, and the input end and output end of the signal processing module are communicatively connected to the control system of the self-propelled rail vehicle; When the signal processing module receives the distance data and angle data, it compares them with the preset threshold. If the distance data and angle data are less than the threshold, it is determined that no derailment has occurred at the current moment, the current process ends, and the next round of derailment detection begins; If the distance data and angle data received by the signal processing module are greater than the threshold, it is determined that derailment has occurred at the current moment. The signal processing module will then send an alarm signal to the control system of the self-propelled rail vehicle, and the control system will issue action instructions to the self-propelled rail vehicle to perform emergency stop, high-voltage power off, and traction motor unloading.

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