Single-vehicle ball passing automatic test ball serving device for railway wagon outer braking system

Abstract

A single-vehicle ball passing automatic test ball serving device for an external braking system of a railway wagon relates to the technical field of railway vehicle maintenance and comprises a pneumatic connecting part, a launching preparation part, a braking pipe connecting part and a control part, the air inlet end of the pneumatic connecting part is hermetically connected with the pneumatic system, the mounting end of the pneumatic connecting part is hermetically communicated with the head end of the launching preparation part, and a test ball is placed in the launching preparation part; the tail end of the launching preparation part is hermetically communicated with the brake pipe connecting part, and the brake pipe connecting part is hermetically communicated with the brake pipe; the control part is mounted on the launching preparation part, and is used for detecting a position signal of the test ball and sending a control signal to the pneumatic system; the device can improve the ball passing test efficiency and ensure the accuracy of the test result.

Description

Technical Field

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

[0002] The single vehicle test is a comprehensive inspection process of the air brake, foundation brake and hand brake of each vehicle of a freight train after the overall vehicle is completed. The single vehicle test is carried out in accordance with the single vehicle test process specified in the "Rules for Inspection and Maintenance of Railway Freight Car Brakes". The first item in the single vehicle test is the ball test.

[0003] In the ball-passing test, the launch of the ball relies on a pneumatic system, so the test launch end is often designed to be sealed. As a result, workers cannot observe the launch of the ball. Workers can only determine whether the brake pipe is unobstructed by observing whether the ball reaches the test receiving end. However, there are cases where the ball is stuck in the test launch end, resulting in misjudgment of the ball-passing test results. Workers need to check the brake pipe and the test launch end, which affects the efficiency of the ball-passing test.

[0004] Therefore, we propose a launching device that can improve the efficiency of the ball passing test and ensure the accuracy of the test results. Utility Model Content

[0005] The purpose of the utility model is to provide a single-vehicle automatic ball-passing test device for a railway freight car external brake system, which can improve the efficiency of the ball-passing test and ensure the accuracy of the test results.

[0006] The utility model is achieved through the following technical solutions:

[0007] A single-car ball-passing automatic test and launching device for a railway freight car external brake system comprises a pneumatic connection part, a launching preparation part, a brake pipe connection part and a control part;

[0008] The air inlet end of the pneumatic connection part is sealedly connected to the pneumatic system, and the mounting end of the pneumatic connection part is sealedly connected to the head end of the launch preparation part, and the launch preparation part is used to place the test ball;

[0009] The tail end of the launch preparation portion is in sealed communication with the brake pipe connecting portion, and the brake pipe connecting portion is in sealed communication with the brake pipe;

[0010] The control unit is installed in the launch preparation unit, and is used to detect the position signal of the test ball and send a control signal to the pneumatic system.

[0011] Furthermore, the launch preparation part is configured as a tubular structure, the head end pipe opening of the launch preparation part is connected to the pneumatic system, and the tail end pipe opening of the launch preparation part is connected to the brake pipe.

[0012] Furthermore, the ratio of the diameter of the launch preparation part to the diameter of the test ball is 1:0.9±0.05.

[0013] Furthermore, an electronic chip is embedded in the test ball for transmitting a radio frequency signal with a unique ID; the control 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 pneumatic system 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 control unit also includes a button and an indicator light, wherein the button is electrically connected to the battery, and the indicator light is electrically connected to the processor.

[0016] Furthermore, the radio frequency antenna is configured as a ring structure and is correspondingly buried in the tube wall of the launch preparation part.

[0017] Furthermore, the processor adopts the STM32F103C8T6 model.

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

[0019] The utility model discloses a single-vehicle automatic ball-passing test and launching device for the external brake system of a railway freight car. The control unit can detect the position of the test ball, so as to determine whether the test ball is launched during the ball-passing test, thereby ensuring the uniqueness of the result of using the ball-passing test to judge whether the brake pipe is unobstructed, avoiding misjudgment and improving the accuracy of the test result. Moreover, when the test receiving end does not receive the small ball, it is only necessary to check the brake pipe, thereby improving the efficiency of the ball-passing test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the present utility model.

[0021] Figure 2 This is a schematic diagram of the control unit structure of the utility model.

[0022] Figure numerals: 1. Pneumatic connection part; 2. Launch preparation part; 3. Brake pipe connection part; 4. Control part; 41. RF antenna; 42. RF transceiver; 43. Processor; 44. Wireless transmission module; 45. Battery; 46. Button; 47. Indicator light; 5. Electronic chip. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Example 1

[0029] As attached Figure 1 The device for automatically testing and launching a ball through a single vehicle for an external brake system of a railway freight car comprises a pneumatic connection part 1, a launch preparation part 2, a brake pipe connection part 3 and a control part 4;

[0030] The air inlet end of the pneumatic connection part 1 is sealedly connected to the pneumatic system, and the mounting end of the pneumatic connection part 1 is sealedly connected to the head end of the launch preparation part 2, and the launch preparation part 2 is used to place the test ball;

[0031] The tail end of the launch preparation part 2 is in sealed communication with the brake pipe connecting part 3, and the brake pipe connecting part 3 is in sealed communication with the brake pipe;

[0032] The pneumatic system is used to pass high-pressure gas into the launch preparation part 2. Driven by the high-pressure gas, the test ball enters the brake pipe from the brake pipe connection part 3 to perform a ball-passing test. When the test ball passes through the brake pipe and enters the test receiving end, it indicates that the brake pipe is unobstructed and the railway freight car's brake system can operate normally. If the test ball does not reach the test receiving end after passing through the brake pipe, it indicates that the brake pipe is not unobstructed. Continuing to use the brake pipe may cause a malfunction of the brake system, and the brake pipe needs to be removed for maintenance.

[0033] The control unit 4 is installed in the launch preparation unit 2, and is used to detect the position signal of the test ball and send a control signal to the pneumatic system;

[0034] The control unit 4 detects the position of the test ball in the launch preparation unit 2 to determine whether the test ball is located in the launch preparation unit 2 during the ball passing test, and whether the test ball leaves the launch preparation unit 2 after the pneumatic system ventilates the launch preparation unit 2; thereby determining whether the ball passing test is proceeding smoothly.

[0035] In addition, the launch preparation part 2 is configured as a tubular structure, the head end pipe opening of the launch preparation part 2 is connected to the pneumatic system, and the tail end pipe opening of the launch preparation part 2 is connected to the brake pipe; that is, the air outlet pipe of the pneumatic system, the launch preparation part 2 and the brake pipe are correspondingly connected, so that the pneumatic system drives the test ball to move toward the brake pipe by outputting high-pressure gas, and the diameter of the launch preparation part 2 and the brake pipe are consistent, thereby ensuring that the test ball can pass through the brake pipe smoothly.

[0036] In particular, the ratio of the tube diameter of the launch preparation part 2 to the diameter of the test ball is 1:0.9±0.05, among which the optimal ratio is 1:0.9, that is, the diameter of the test ball is slightly smaller than the tube diameter of the launch preparation part 2, preventing the friction between the test ball and the inner wall of the launch preparation part 2 from affecting the movement of the test ball, thereby ensuring that the ball passing test can proceed smoothly.

[0037] Example 2

[0038] As attached Figure 2The test ball shown is embedded with an electronic chip 5 for transmitting a radio frequency signal with a unique ID. The control unit 4 includes a radio frequency antenna 41, a radio frequency transceiver 42, a processor 43, a wireless transmission module 44, and a battery 45. The radio frequency antenna 41 is used to detect the radio frequency signal emitted by the electronic chip 5. The signal receiving end of the radio frequency transceiver 42 is electrically connected to the radio frequency antenna 41, and the signal output end of the radio frequency transceiver 42 is electrically connected to the processor 43. The output pin of the processor 43 is connected to the pneumatic system signal through the wireless transmission module 44.

[0039] The battery 45 is electrically connected to the RF transceiver 42, the processor 43 and the wireless transmission module 44 respectively;

[0040] Among them, if the RF antenna 41 receives the unique RF signal emitted by the electronic chip 5, the next step is that the RF transceiver 42 sends the unique RF signal received by the RF antenna 41 to the processor 43. The processor 43 determines that the test ball is in the launch preparation part 2 at this time, and then the processor 43 sends a ball passing test start signal to the pneumatic system. The pneumatic system then introduces high-pressure gas to the launch preparation part 2. If the RF antenna 41 does not receive the unique RF signal at this time, it means that the ball passing test is carried out smoothly; and if the RF antenna 41 can still receive the unique RF signal at this time, it means that the test ball has not left the launch preparation part 2, and the launch preparation part 2 is to be repaired; in addition, if the ball passing test is carried out smoothly, but the test receiving end does not receive the test ball, it means that the brake pipe is blocked and the brake pipe is to be repaired.

[0041] In addition, the processor 43 can also be connected to the test receiving end signal. When the test ball leaves the launch preparation part 2, the processor 43 promptly sends a test ball departure signal to the test receiving end. Therefore, after the test ball arrives at the test receiving end, the processor 43 can calculate the moving speed of the test ball in the brake pipe based on the time difference between the departure and arrival of the test ball, and then judge whether there are debris on the inner wall of the brake pipe that blocks the movement of the test ball, thereby further improving the accuracy of the judgment of the brake pipe in the ball passing test.

[0042] In addition, the RF antenna 41 is set to a ring structure and is buried in the pipe wall of the launch preparation part 2. The ring-shaped RF antenna 41 has a more comprehensive signal receiving capability and a more accurate detection result for the test ball, thereby improving the accuracy of the ball passing test.

[0043] As needed, the control unit 4 also includes a button 46 and an indicator light 47, wherein the button 46 is electrically connected to the battery 45, and the indicator light 47 is electrically connected to the processor 43, wherein the button 46 is used to control whether the battery 45 is working, that is, when the button 46 is pressed for the first time, the control battery 45 starts to supply power to the RF transceiver 42, the processor 43 and the wireless transmission module 44, and when the button 46 is pressed again, the control battery 45 stops supplying power to the RF transceiver 42, the processor 43 and the wireless transmission module 44; the indicator light 47 emits different brightness according to whether the processor 43 determines that the ball passing test is carried out smoothly, that is, when the processor 43 determines that the ball passing test is carried out smoothly, the indicator light 47 lights up green, and if the processor 43 determines that the ball passing test is not carried out, the indicator light 47 lights up red.

[0044] In particular, the processor 43 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] 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 automatic ball-passing test device for a railway freight car external brake system, characterized in that: It comprises a pneumatic connection part (1), a launch preparation part (2), a brake pipe connection part (3) and a control part (4); The air inlet end of the pneumatic connection part (1) is sealedly connected to the pneumatic system, the mounting end of the pneumatic connection part (1) is sealedly connected to the head end of the launch preparation part (2), and the launch preparation part (2) is used to place the test ball; The tail end of the launch preparation part (2) is in sealed communication with the brake pipe connecting part (3), and the brake pipe connecting part (3) is in sealed communication with the brake pipe; The control unit (4) is installed on the launch preparation unit (2), and is used to detect the position signal of the test ball and send a control signal to the pneumatic system.

2. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 1 is characterized in that: The launch preparation part (2) is configured as a tubular structure, the head end pipe opening of the launch preparation part (2) is connected to the pneumatic system, and the tail end pipe opening of the launch preparation part (2) is connected to the brake pipe.

3. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 2 is characterized in that: The ratio of the diameter of the launch preparation part (2) to the diameter of the test ball is 1:0.9±0.

05.

4. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 2 is characterized in that: An electronic chip (5) is embedded in the test ball and is used to send a radio frequency signal with a unique ID; the control unit (4) includes a radio frequency antenna (41), a radio frequency transceiver (42), a processor (43), a wireless transmission module (44) and a battery (45); wherein the radio frequency antenna (41) is used to detect the radio frequency signal sent by the electronic chip (5); the signal receiving end of the radio frequency transceiver (42) is electrically connected to the radio frequency antenna (41); the signal output end of the radio frequency transceiver (42) is electrically connected to the processor (43); and the output pin of the processor (43) is connected to the pneumatic system signal through the wireless transmission module (44); The battery (45) is electrically connected to the radio frequency transceiver (42), the processor (43) and the wireless transmission module (44) respectively.

5. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 4 is characterized in that: The control unit (4) further comprises a button (46) and an indicator light (47), wherein the button (46) is electrically connected to the battery (45), and the indicator light (47) is electrically connected to the processor (43).

6. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 4 is characterized in that: The radio frequency antenna (41) is configured as a ring structure and is correspondingly buried in the pipe wall of the transmission preparation part (2).

7. The single-vehicle automatic ball-passing test device for the railway freight car external brake system according to claim 4 is characterized in that: The processor (43) adopts the STM32F103C8T6 model.

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