Low-power-consumption derailment detection apparatus and method for railway freight cars

Abstract

A low-power-consumption derailment detection apparatus for railway freight cars, said apparatus comprising a detection module, a diagnosis module, an actuation module, a power management module and a storage battery; the power management module is mounted near a center plate of a car body, and is used for controlling the storage battery to supply power to the derailment detection apparatus when the vibration acceleration of the car body is greater than a preset threshold value, and controlling the derailment detection apparatus to power off when the vibration acceleration of the car body is not greater than the preset threshold value; the detection module is used for detecting, by means of through-beam laser technology, the positions of wheel sets relative to the car body, and transmitting a detection result to the diagnosis module; the diagnosis module is used for logically determining, on the basis of the detection result, whether a car has derailed, when detecting that the car has derailed, outputting a derailment signal to the actuation module, and when detecting that the car has not derailed, controlling the derailment detection apparatus to power off after a system operates for a short period of time; and the actuation module is used for controlling, after receiving the derailment signal, the train to perform emergency braking. The derailment detection apparatus has a structure that is conveniently assembled and disassembled; and all devices are mounted on a car body, and thus a connecting ring between the car body and a bogie is omited, thereby greatly reducing the workload of mounting and dismounting the automatic derailment detection apparatus during lifting and lowering of the car. The present application also relates to a detection method.

Description

Low-power rail freight car derailment detection device and method TECHNICAL FIELD

[0001] The present application belongs to the field of rail freight car braking technology, and particularly relates to a low-power rail freight car derailment detection device and method. BACKGROUND

[0002] Safety is a key concern of rail transportation, and derailment is a major safety hazard of rail transportation. Derailment accidents can cause casualties and property losses, and seriously affect the transportation order. At present, most of the newly built railway freight cars in China are equipped with automatic derailment braking devices, which mainly consist of brake valve rod, action rod, valve body, ring-shaped elastic sheet, locking nut, top beam and pull ring, etc. The working principle is that when the railway freight car derails, the pull ring or top beam contacts the axle of the freight car, and the force makes the brake valve rod break, thereby opening the train pipe and the air passage, prompting the train to produce emergency braking and reducing the loss of train derailment. However, the above-mentioned automatic derailment braking device has defects such as difficult gap adjustment, poor installation adaptability, and the work of disassembling (assembling) the pull ring during vehicle maintenance is large, causing inconvenience in vehicle maintenance. SUMMARY

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a derailment detection device and method which is convenient to install and disassemble, low-power, and can accurately detect vehicle derailment.

[0004] To achieve the above-mentioned purpose, the present application realizes through the following technical solutions:

[0005] The present application provides a low-power rail freight car derailment detection device, which comprises a detection module, a diagnosis module, an execution module, a power management module and a storage battery.

[0006] The power management module is installed near the center plate of the car body, and the power management module is used to control the storage battery to supply power to the derailment detection device when the vibration acceleration of the car body is greater than a preset threshold, and otherwise control the derailment detection device to be powered off.

[0007] The detection module is used to detect the relative position of the wheel set to the car body through the through-beam laser technology, and transmit the detection result to the diagnosis module.

[0008] The diagnosis module is used to logically identify whether the vehicle is derailed according to the detection result, output a derailment signal to the execution module when identifying that the vehicle is derailed, and control the derailment detection device to be powered off after a short period of time when identifying that the vehicle is not derailed.

[0009] The execution module is used to control the emergency braking of the train when receiving the derailment signal.

[0010] As a further optimization of the present application, the power management module comprises a mechanical vibration switch and a circuit board, and the closing value of the mechanical vibration switch is set to 10 m / s 2 .

[0011] As a further optimization of the present application, the modules in the derailment detection device are connected through cables, and the cables adopt quick connectors.

[0012] As a further optimization of the present application, the modules in the derailment detection device are fixed on the vehicle body through mounting seats.

[0013] As a further optimization of the present application, the diagnostic module is provided with a logic circuit, which can determine whether the vehicle is derailed according to the detection result.

[0014] As a further optimization of the present application, when it is detected that the vehicle is not derailed, the diagnostic module controls the derailment detection device to work for 30 seconds and then power off.

[0015] As a further optimization of the present application, the diagnostic module has an output storage download function for recording the number of times the derailment detection device is started.

[0016] As a further optimization of the present application, the execution module adopts an electric ball valve structure or an electromagnetic on-off structure.

[0017] The present application also provides a detection method using the low-power consumption derailment detection device for railway wagons, comprising the following steps:

[0018] S100, installing a low-power consumption derailment detection device on a railway wagon, the device comprising a detection module, a diagnostic module, an execution module, a power management module and a storage battery;

[0019] S200, when the vehicle is running, the storage battery is powered by the power management module, when the vibration of the vehicle body is small and there is no risk of derailment, the mechanical vibration switch of the power management module is off, and the storage battery is not powered; when the vibration of the vehicle body is large and there is a risk of derailment, the mechanical vibration switch of the power management module is on, and the storage battery is powered;

[0020] S300, after the storage battery is powered, the detection module works, and the detection module detects the position of the wheel set relative to the vehicle body based on the through-beam laser technology and transmits the detection result to the diagnostic module;

[0021] S400, the diagnostic module logically discriminates the detection result, outputs a vehicle derailment signal when the position of the wheel set relative to the vehicle body exceeds a set value, and controls the derailment detection system to work for 30 seconds and then power off when the position of the wheel set relative to the vehicle body does not exceed the set value;

[0022] S500: When the execution module receives a vehicle derailment signal, the electric ball valve opens, the train exhaust pipe is vented, and the train applies emergency braking.

[0023] Compared with the prior art, the present invention has the following significant advantages:

[0024] 1. All components of the derailment detection device of the present invention are installed on the car body, eliminating the connecting ring between the car body and the bogie, thereby greatly reducing the workload of disassembling and assembling the automatic derailment device when the vehicle is being lifted and lowered, and improving maintenance efficiency.

[0025] 2. The system uses a mechanical vibration switch to control the power supply. The system only works when the vehicle body vibration is large and there is a risk of derailment. The system does not work when the vehicle body vibration is small or there is no risk of derailment. This effectively reduces the overall power consumption of the system and extends the service life of the battery.

[0026] 3. Derailment is determined by detecting the position of the wheelsets relative to the car body. This method, using a through-beam laser, is more accurate than traditional contact-triggered derailment detection, thus improving the accuracy of the detection.

[0027] 4. Each module is fixed to the mounting base with bolts and connected with quick-connect couplings, which facilitates disassembly and replacement, reducing maintenance costs and time.

[0028] 5. The diagnostic module has logical discrimination capabilities and can intelligently control the execution module based on the detection results. When a vehicle derailment is detected, it can quickly initiate emergency braking to reduce derailment losses. At the same time, when the vehicle has not derailed, it controls the derailment detection device to work for a period of time and then automatically cuts off the power, further reducing power consumption.

[0029] 6. The diagnostic module has output, storage, and download functions, which can record operating data such as the number of times the derailment detection device is started. This allows for adjustments to the starting acceleration value of the vibration switch based on actual operating conditions, further optimizing system performance.

[0030] 7. The derailment detection device of the present invention has a compact structure, is easy to install, and is applicable to various types of railway freight cars, with strong versatility and applicability. Attached Figure Description

[0031] Figure 1. Overall system diagram of the railway freight car derailment detection device.

[0032] Figure 2. Working principle diagram of railway freight car derailment detection device. Detailed Implementation

[0033] In order to make the technical personnel in the art better understand the technical solutions of the present application, the preferred embodiments of the present application will be described below in combination with specific examples, but it should be understood that the drawings are only used for illustrative description and cannot be understood as a limitation on the patent; in order to better illustrate the present embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, the omission of some well-known structures and their descriptions in the drawings is understandable. The positional relationship described in the drawings is only used for illustrative description and cannot be understood as a limitation on the patent.

[0034] Fig. 1 is a general system diagram of the railway wagon derailment detection device in the embodiment of the present application, and Fig. 2 is a working principle diagram of the railway wagon derailment detection device in the embodiment of the present application. As shown in Fig. 1 and Fig. 2, the railway wagon derailment detection device provided by the present application comprises a detection module, a diagnosis module, an execution module, a power management module and a storage battery.

[0035] Each module in the derailment detection device is installed on the vehicle body, and each module is fixed on the mounting seat by bolts, and the mounting seat is welded on the vehicle body.

[0036] In the embodiment of the present application, the power management module comprises a mechanical vibration switch and a circuit board. The mechanical vibration switch mainly consists of a mass block, a contact sheet and a spring. When the outside is vibrated, the mass block will move, causing the contact sheet to contact or separate from the contact, thereby changing the open or closed state of the circuit. According to the test and simulation calculation, the closing value of the mechanical vibration switch is set to 10 m / s 2 .

[0037] The power management module is installed near the front and rear center plates of the vehicle body, and when the vertical vibration acceleration of the vehicle body is greater than the closing value of the vibration switch, the power management system starts to control the storage battery to supply power to the derailment detection device.

[0038] After the detection module is started, the position of the wheel set relative to the vehicle body is detected by the through-beam laser technology, and the detection result is transmitted to the diagnosis module through the cable. The installation position of the through-beam laser is determined by the geometric relationship between the vehicle body and the bogie when the vehicle is derailed. For the through-beam laser technology, please refer to the relevant records in the patent with publication number CN118182406A.

[0039] The diagnosis module logically distinguishes the detection result, outputs the derailment signal to the execution module when identifying the vehicle derailment, and controls the derailment detection device to be powered off after 30 seconds of system operation when identifying that the vehicle is not derailed. The diagnosis module has the function of output storage download, can record the number of times the derailment detection device is started, and is convenient for adjusting the vibration switch starting acceleration value according to the actual operation situation in the later period.

[0040] The execution module is mainly composed of an electric ball valve, and the electric ball valve is opened when the derailment signal is received, the train pipe is ventilated, the train generates emergency braking, and the derailment loss is reduced.

[0041] In cooperation between the above modules, the derailment detection device can be inactivated when the vehicle body vibration is small, and can be inactivated after working for a period of time when the vehicle body vibration is large but the vehicle is not derailed, thereby reducing the power consumption of the system.

[0042] In combination with FIGS. 1 and 2, in one embodiment, a low-power railway wagon derailment detection device and an operating method thereof include the following steps:

[0043] S100, each component of the derailment detection device is fixed on the mounting seat by bolts, the mounting seat is welded to the vehicle body, and the components are connected by cables, and the cables adopt quick plug connectors;

[0044] S200, the battery is powered by the power management module when the vehicle is running, when the vehicle body vibration is small and there is no derailment risk, the vibration switch of the power management module is off, and the battery is not powered; when the vehicle body vibration is large and there is a risk of derailment, the vibration switch of the power management module is on, and the battery is powered;

[0045] S300, after the battery is powered, the detection module works, the detection module detects the position of the wheel set relative to the vehicle body and transmits the detection result to the diagnosis module;

[0046] S400, the diagnosis module logically distinguishes the detection result, outputs the vehicle derailment signal when the position of the wheel set relative to the vehicle body exceeds the set value, and controls the derailment detection system to work for 30s and then power off when the position of the wheel set relative to the vehicle body does not exceed the set value;

[0047] S500, when the vehicle derailment signal is received, the electric ball valve of the execution module is opened, the train pipe is ventilated, the train generates emergency braking, and the derailment loss is reduced.

[0048] In summary, the present application has significant advantages in improving the accuracy of derailment detection, reducing the power consumption of the system, simplifying the installation and maintenance process, and has important significance for improving the safety and efficiency of railway transportation.

[0049] The above descriptions are only the specific embodiments of the present application, it should be understood that the above descriptions are only the specific embodiments of the present application, and do not limit the patent scope of the present application, and various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A low power consumption derailed railcar detection device, characterized by, The derailment detection device comprises a detection module, a diagnosis module, an execution module, a power management module and a battery; The power management module is installed near the heart disc of the vehicle body, and is used to control the battery to supply power to the derailment detection device when the vibration acceleration of the vehicle body is greater than a preset threshold, and to control the derailment detection device to be powered off otherwise; The detection module is used to detect the position of the wheel set relative to the vehicle body by means of the through-beam laser technology, and to transmit the detection result to the diagnosis module; The diagnosis module is used to logically identify whether the vehicle is derailed based on the detection result, to output a derailment signal to the execution module when identifying that the vehicle is derailed, and to control the derailment detection device to be powered off after a short time of system operation when identifying that the vehicle is not derailed; The execution module is used to control the train to be braked in emergency when receiving the derailment signal.

2. The low power consumption railcar derailment detection apparatus of claim 1, wherein: The power management module comprises a mechanical vibration switch and a circuit board, and the closing value of the mechanical vibration switch is set to 10 m / s 2 .

3. The low power consumption railcar derailment detection apparatus of claim 1, wherein: The modules in the derailment detection device are connected through cables, and the cables adopt quick plug connectors.

4. The low power consumption railcar derailment detection apparatus of claim 1, wherein: The modules in the derailment detection device are fixed on the vehicle body through mounting seats.

5. The low power consumption railcar derailment detection apparatus of claim 1, wherein: The diagnosis module is provided with a logic circuit, which can determine whether the vehicle is derailed according to the detection result.

6. The low power consumption railcar derailment detection apparatus of claim 1, wherein: When detecting that the vehicle is not derailed, the diagnosis module controls the derailment detection device to be powered off after 30s of operation.

7. The low power consumption railcar derailment detection apparatus of claim 1 wherein: The diagnosis module has an output storage download function, which is used to record the number of times of starting the derailment detection device.

8. The low power consumption railcar derailment detection apparatus of claim 1, wherein: The execution module adopts an electric ball valve structure or an electromagnetic on-off structure.

9. A method of detecting using the low-power railcar derailment detection apparatus according to any one of claims 1 to 8, characterized by, The method comprises the following steps: S100, installing a low-power derailment detection device on a railway wagon, which comprises a detection module, a diagnosis module, an execution module, a power management module and a battery; S200, when the vehicle is running, the power management module is used to control the battery to supply power, when the vibration of the vehicle body is small and there is no risk of derailment, the mechanical vibration switch of the power management module is off, and the battery does not supply power; when the vibration of the vehicle body is large and there is a risk of derailment, the mechanical vibration switch of the power management module is on, and the battery supplies power; S300, after the battery supplies power, the detection module works, and the detection module detects the position of the wheel set relative to the vehicle body based on the through-beam laser technology, and transmits the detection result to the diagnosis module; S400, the diagnosis module logically identifies the detection result, outputs a vehicle derailment signal when the position of the wheel set relative to the vehicle body exceeds a set value, and controls the derailment detection system to be powered off after 30s of operation when the position of the wheel set relative to the vehicle body does not exceed the set value; S500, when the execution module receives the vehicle derailment signal, the electric ball valve is opened, the train pipe is ventilated, and the train is braked in emergency.