Single-vehicle ball passing automatic test ball receiving device for railway wagon external braking system

Abstract

A single-vehicle ball passing automatic test ball receiving device for an external brake system of a railway wagon relates to the technical field of railway vehicle maintenance, and comprises a connecting part, a transition part and a detection part, the connecting part is correspondingly communicated with the tail end of a brake pipe, and a first channel for a test ball to pass through is arranged in the connecting part; the transition part is used for communicating the connecting part with the detection part, a second channel for the test ball to pass through is arranged in the transition part, and a plurality of exhaust holes communicated with the second channel are formed in the surface of the transition part; the inner cavity of the detection part is used for receiving the test ball, and the detection part is used for sending a test ball arrival signal to the upper computer, so that human resources can be saved, and the test ball can be safely received.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicle maintenance, and in particular to a single-vehicle ball-passing automatic test and ball-catching device for a railway freight car external brake system. Background Art

[0002] The train ball-passing test is one of the windage tests for freight trains and is a crucial step in ensuring safe train operation. The windage test for freight trains primarily includes a ball-passing test, a leakage test, a sensitivity test, and an emergency brake test. The ball-passing test uses compressed air as a power source to force a test ball (usually a solid ball cast from a high-strength, wear-resistant composite material, such as nylon 6 or improved materials) into one end of the brake pipe. The air pressure forces the ball to move forward along the inside of the pipe. If the brake pipe is unobstructed, the test ball will successfully reach the other end and be recovered.

[0003] By conducting ball tests regularly, possible blockage problems inside the brake pipe system can be discovered and resolved in a timely manner, thereby ensuring that the train's braking system can operate normally, which is of great significance to improving the safety and reliability of train operation.

[0004] If the test ball can smoothly pass from one end of the brake pipe to the other and be retrieved by the net bag, it means that the brake pipe system is unobstructed. If the ball fails to reach or be retrieved, there may be a blockage. If the brake pipe system is blocked, use an endoscope or other tools to find the blockage along the ball's path and clean or repair it.

[0005] Traditionally, the naked eye is used to observe whether the test ball has been recovered. However, manual observation may result in omissions and incur certain labor costs. Alternatively, excessive air pressure may cause the recovery net to be punctured when the test ball is recovered, causing damage to the test ball and affecting its secondary use. Utility Model Content

[0006] The utility model aims to provide a single-car automatic ball-passing test and receiving device for a railway freight car external brake system, which can save human resources and safely receive the test ball.

[0007] The utility model is achieved through the following technical solutions:

[0008] A single-car automatic ball-passing test and receiving device for a railway freight car external brake system comprises a connecting portion, a transition portion, and a detection portion. The connecting portion is correspondingly connected to the end of a brake pipe, and a first channel for a test ball to pass through is provided in the connecting portion.

[0009] The transition portion is used to connect the connecting portion and the detection portion, a second channel for the test ball to pass through is provided in the transition portion, and a plurality of exhaust holes connected to the second channel are provided on the surface of the transition portion;

[0010] The inner cavity of the detection part is used to receive the test ball, and the detection part is used to send a signal of the arrival of the test ball to the host computer.

[0011] Furthermore, the exhaust holes are configured to be strip-shaped, and the length direction of the plurality of exhaust holes is consistent with the length direction of the second channel.

[0012] Furthermore, the plurality of exhaust holes are evenly distributed and arranged around the second channel.

[0013] Furthermore, an electronic chip is embedded in the test ball for transmitting a radio frequency signal with a unique ID, and the detection unit includes a radio frequency antenna, a radio frequency transceiver, a processor, a wireless transmission module, and a battery; wherein the radio frequency antenna is used to detect the radio frequency signal emitted by the electronic chip, the signal receiving end of the radio frequency transceiver is electrically connected to the radio frequency antenna, the signal output end of the radio frequency transceiver is electrically connected to the processor, and the output pin of the processor is connected to the host computer signal through the wireless transmission module;

[0014] The battery is electrically connected to the radio frequency transceiver, the processor and the wireless sending module respectively.

[0015] Furthermore, the power output end of the battery is electrically connected to a low voltage dropout regulator, and the output end of the low voltage dropout regulator is electrically connected to the radio frequency transceiver, the processor and the wireless transmission module respectively.

[0016] Furthermore, the processor adopts the STM32F103C8T6 model.

[0017] Furthermore, a buffer pad is provided in the inner cavity of the detection part.

[0018] The technical solution of the utility model has at least the following advantages and beneficial effects:

[0019] The utility model discloses a single-car automatic ball-passing test and receiving device for a railway freight car external brake system. The device can release compressed air arriving with the test ball through the exhaust hole of the transition pipe. After the compressed air is released, the speed of the test ball will be significantly slowed down. When entering the detection part, it only relies on inertia to move forward, thereby achieving the purpose of protecting the test ball.

[0020] In addition, the detection unit can automatically identify whether the test ball has arrived and then send the result to the host computer, which has the advantages of saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the present utility model.

[0022] Figure 2 This is a schematic structural diagram of the detection unit of the present utility model.

[0023] Figure numerals: 1. Connecting part; 2. Transition part; 21. Exhaust hole; 3. Detection part; 31. RF antenna; 32. RF transceiver; 33. Processor; 34. Wireless transmission module; 35. Battery; 36. Low voltage difference regulator; 4. Electronic chip. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] As attached Figure 1 The device for automatically testing and receiving a ball passing through a single vehicle for a railway freight car external brake system includes a connecting portion 1, a transition portion 2, and a detection portion 3. The connecting portion 1 is connected to the end of the brake pipe and has a first channel for the test ball to pass through.

[0031] The transition portion 2 is used to connect the connecting portion 1 and the detection portion 3. A second channel for the test ball to pass through is provided in the transition portion 2, and a plurality of exhaust holes 21 connected to the second channel are provided on the surface of the transition portion 2.

[0032] In particular, the exhaust holes 21 are configured in an elongated shape, and the plurality of exhaust holes 21 are aligned with the length direction of the second channel. Since the compressed air also moves along the length direction of the second channel, the elongated exhaust holes 21 can achieve the greatest exhaust efficiency, thereby achieving the purpose of rapid air release and effectively slowing down the movement speed of the test ball.

[0033] In addition, the plurality of exhaust holes 21 are evenly distributed and arranged around the second channel, so that the exhaust efficiency of the plurality of exhaust holes 21 can be kept uniform, thereby further improving the exhaust efficiency of the compressed gas;

[0034] The inner cavity of the detection part 3 is used to receive the test ball, and the detection part 3 is used to send a signal of the arrival of the test ball to the upper computer;

[0035] It should be noted that the first channel, the second channel and the inner cavity of the detection part 3 are in a corresponding connected state, that is, after the test ball is output from the brake pipe, it will pass through the first channel and the second channel in sequence, and then enter the inner cavity of the detection part 3, wherein the test ball moves under the push of compressed air, and in the second channel, the compressed air will be discharged from the exhaust hole 21, thereby slowing down the speed of the test ball in the second channel, and finally making the test ball reach the detection part 3 at a slower speed, and the impact force caused is also smaller.

[0036] Example 2

[0037] As attached Figure 2 As shown, an electronic chip 4 is embedded in the test ball for transmitting a radio frequency signal with a unique ID. The detection unit 3 includes a radio frequency antenna 31, a radio frequency transceiver 32, a processor 33, a wireless transmission module 34, and a battery 35. The radio frequency antenna 31 is used to detect the radio frequency signal emitted by the electronic chip 4. The signal receiving end of the radio frequency transceiver 32 is electrically connected to the radio frequency antenna 31, the signal output end of the radio frequency transceiver 32 is electrically connected to the processor 33, and the output pin of the processor 33 is connected to the host computer signal through the wireless transmission module 34.

[0038] The battery 35 is electrically connected to the RF transceiver 32, the processor 33 and the wireless transmission module 34 respectively;

[0039] If the radio frequency antenna 31 receives the radio frequency signal sent by the electronic chip 4, it means that the test ball has reached the detection part 3. If the radio frequency antenna 31 does not receive the radio frequency signal, it means that the test ball has not reached the detection part 3, thereby completing the automatic detection.

[0040] It should be noted that, since the radio frequency signal emitted by the electronic chip 4 is unique, the detection result of the detection unit 3 is guaranteed to be accurate;

[0041] In addition, the RF transceiver 32 is used to receive the detection signal transmitted by the RF antenna 31, and when a test ball is detected, it sends a corresponding processing signal to the processor 33. The processing signal includes the arrival information of the test ball, the time of the test ball arrival, etc. The processor 33 performs preliminary processing and then sends it to the host computer through the wireless transmission module 34;

[0042] It should be noted that the wireless transmission module 34 adopts a Loar module.

[0043] In addition, the power output end of the battery 35 is electrically connected to the low-dropout voltage regulator 36, and the output end of the low-dropout voltage regulator 36 is electrically connected to the RF transceiver 32, the processor 33 and the wireless transmission module 34 respectively; wherein the low-dropout voltage regulator 36, i.e., LDO, can be used to provide a stable power supply for low-power components such as the RF reader and the wireless transmission module 34. Since these components have high requirements for power supply noise and stability, the low noise and fast transient response characteristics of the LDO can ensure the normal operation of these components.

[0044] In particular, the processor 33 adopts the STM32F103C8T6 model;

[0045] The chip has the advantages of high performance, namely, it adopts the ARM Cortex-M3 core, runs at a frequency of up to 72MHz, provides excellent computing power and low power consumption; supports single-cycle 32x32-bit multiplication and hardware division, greatly improving the operation speed.

[0046] 2. Rich peripherals, including multiple advanced timers (such as TI M1 and TI M8), general-purpose timers (such as TI M2 to TI M5), and basic timers (such as TI M6 and TI M7), suitable for various timing and counting needs;

[0047] Multiple standard communication interfaces such as USART, SPI, I2C, and CAN facilitate data exchange with other devices. ADC and DAC: Built-in 12-bit analog-to-digital converter (ADC) and 12-bit digital-to-analog converter (DAC), suitable for analog signal acquisition and generation;

[0048] And the DMA controller, the direct memory access (DMA) controller can reduce the burden on the CPU and improve data transmission efficiency.

[0049] 3. There are multiple low power consumption modes: including sleep mode, stop mode and standby mode. You can select the appropriate low power consumption mode according to application requirements to extend battery life.

[0050] And flexible power management: Supports multiple power management options, such as voltage regulators and external power switching, to further optimize power consumption.

[0051] 4. It has the advantage of being easy to develop. ST provides a variety of development tools, such as STM32CubeMX, STM32CubeIDE and HAL library, which simplifies the development process;

[0052] And because the STM32 series is widely used, there are a large number of development resources, tutorials and community support on the Internet, which makes it easier for developers to solve problems and learn.

[0053] 5. It has the advantage of high integration, with built-in 64KB flash memory and 20KB SRAM, meeting the needs of most embedded applications; integrated 8MHz internal high-speed oscillator and 40kHz internal low-speed oscillator, reducing the need for external components and lowering costs.

[0054] 6. It has the advantage of high reliability, including power supply monitoring, undervoltage detection, over-temperature protection, etc., to ensure that the system can run safely under abnormal conditions; and built-in independent watchdog and window watchdog to prevent program runaway and improve system stability.

[0055] It should be noted that a buffer pad is provided in the inner cavity of the detection part 3 , which can further reduce the impact of the test ball on the detection part 3 .

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A single-car ball-passing automatic test and ball-catching device for a railway freight car external brake system, characterized in that: include: A connecting portion (1), a transition portion (2) and a detection portion (3), wherein the connecting portion (1) is correspondingly connected to the end of the brake pipe, and a first channel for a test ball to pass through is provided in the connecting portion (1); The transition portion (2) is used to connect the connecting portion (1) and the detection portion (3); a second channel for the test ball to pass through is provided in the transition portion (2); and a plurality of exhaust holes (21) connected to the second channel are provided on the surface of the transition portion (2); The inner cavity of the detection part (3) is used to receive the test ball, and the detection part (3) is used to send a signal indicating the arrival of the test ball to the upper computer.

2. The single-vehicle automatic ball-passing test and ball-catching device for the railway freight car external brake system according to claim 1 is characterized in that: The exhaust holes (21) are configured in a long strip shape, and the length direction of the plurality of exhaust holes (21) is consistent with the length direction of the second channel.

3. The single-vehicle automatic ball-passing test and ball-catching device for the railway freight car external brake system according to claim 2 is characterized in that: The plurality of exhaust holes (21) are evenly distributed and arranged around the second channel.

4. The single-vehicle automatic ball-passing test and ball-catching device for a railway freight car external brake system according to claim 1 is characterized in that: An electronic chip (4) is embedded in the test ball and is used to send a radio frequency signal with a unique ID. The detection unit (3) includes a radio frequency antenna (31), a radio frequency transceiver (32), a processor (33), a wireless transmission module (34) and a battery (35); wherein the radio frequency antenna (31) is used to detect the radio frequency signal sent by the electronic chip (4); the signal receiving end of the radio frequency transceiver (32) is electrically connected to the radio frequency antenna (31); the signal output end of the radio frequency transceiver (32) is electrically connected to the processor (33); and the output pin of the processor (33) is connected to the host computer signal through the wireless transmission module (34); The battery (35) is electrically connected to the radio frequency transceiver (32), the processor (33) and the wireless transmission module (34) respectively.

5. The single-vehicle automatic ball-passing test and ball-catching device for the railway freight car external brake system according to claim 4 is characterized in that: The power output end of the battery (35) is electrically connected to the low-voltage difference regulator (36), and the output end of the low-voltage difference regulator (36) is electrically connected to the radio frequency transceiver (32), the processor (33) and the wireless transmission module (34) respectively.

6. The single-vehicle automatic ball-passing test and ball-catching device for the railway freight car external brake system according to claim 4 is characterized in that: The processor (33) adopts the STM32F103C8T6 model.

7. The single-vehicle automatic ball-passing test and ball-catching device for a railway freight car external brake system according to claim 1 is characterized in that: The inner cavity of the detection part (3) is provided with a buffer pad.

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