JPH0624301U - Abnormal vibration detection device for railway vehicles - Google Patents

Abstract

(57) [Summary] [Purpose] To monitor and detect abnormal vibration conditions of various electrical devices mounted on the bogie of each system of railway vehicles. [Structure] Vibration sensor 2 on the bogie for each train system
Install a to 2h. The A / D converter unit 4 is connected to the output side of the vibration sensors 2a to 2h via the multiplexer unit 3. The output side of the A / D converter unit 4 is connected to a comparison operation unit 5 which inputs the reference vibration data signal from the comparison data memory unit 6. It has a control unit 7 which operates by a signal from the comparison calculation unit 5 to display the presence or absence of abnormal vibration of an electric device or the like, and outputs a signal to the monitor display unit 8 and the peak hold unit 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a railway vehicle equipped with a vibration sensor on a bogie, and the signal from this vibration sensor detects looseness or change of mounting parts or devices and detects abnormal vibration in the railway vehicle in order to prevent accidents. Regarding the device.

[0002]

[Prior art]

 Various types of mechanical parts, electric devices, electronic parts and other mechanical structures are attached to the bogies of various railway vehicles. These mounting devices are highly functional and highly reliable devices in line with the modernization and sophistication of railway vehicle technology, and railway personnel are making every possible effort to ensure safety. Therefore, in order to prevent various electric devices and devices attached to the bogie of the railway vehicle from dropping off from the bogie, the number of patrol inspections and man-hours of railway personnel tends to increase in order to prevent this.

[0003]

[Problems to be solved by the device]

 Therefore, in the conventional technology, since the primary problem is that the railway vehicle should be driven safely, the railway personnel should be relaxed in various electric devices, parts and equipment attached to the truck. A lot of man-hours and number of inspections were carried out to determine whether or not the deterioration had occurred, and confirmation work was being carried out on each and every type of electrical equipment, parts and equipment. However, not only was the number of workers increased and the work to check and confirm the attached devices was overlooked, but it was irrational to inspect electrical equipment that originally did not need to be checked and checked.

[0004]

[Means for Solving the Problems]

 The present invention has been devised to solve the problems existing in the above-mentioned conventional technology, and provides a new technology by adopting the following configurations and means. That is, a vibration sensor installed on a bogie for each system of a railway vehicle, an A / D converter unit for digitally converting a signal from the vibration sensor, and a memory unit for storing preset vibration data. A comparison calculation unit that compares and calculates a signal from the A / D converter unit and a signal from a memory unit that stores the preset vibration data; and a monitor display signal and vibration using the signal from the comparison calculation unit. A railway vehicle characterized by comprising a control unit for outputting a signal for holding the peak value of the level, and an indicator lamp for outputting a collective abnormality signal by the output signal from the control unit and displaying a warning. It was an abnormal vibration detector.

[0005]

【Example】

 FIG. 1 is a front view showing a configuration of an abnormal vibration detection device for a railway vehicle according to the present invention, and FIG. 2 is an electric circuit diagram of the abnormal vibration detection device for a railway vehicle according to the present invention. 1 and 2, the present invention will be described in detail. A vibration sensor head 1 is attached to a bogie (not shown) of a railway vehicle. The vibration sensor head 1 is composed of eight vibration sensors 2a to 2h to be installed in each system of the railway vehicle, for example, eight systems. Reference numeral 3 denotes a multiplexer unit provided on the output side of the vibration sensors 2a to 2f, and the same number as the number of the vibration sensors 2a to 2f, in this embodiment, eight channel terminals 3a to 3h and movable contact pieces 3i are provided. It is provided.

Reference numeral 4 denotes an A / D converter section for converting an analog signal from the vibration sensors 2a to 2h into a digital signal, which is connected to an output side of the multiplexer section. Reference numeral 5 is a comparison operation unit, which is connected to the output side of the A / D converter unit 4. The comparison calculation unit 5 compares the preset reference vibration data signal from the comparison data memory unit 6 with the digital signal indicating the vibration displacement amount from the A / D converter unit 4, and the control unit 7 in the latter stage. Output a signal to. The control unit 7 outputs a display signal to the monitor display unit 8 to display the vibration status of each of the vibration sensors 2a to 2h on the monitor display unit 8. As shown in FIG. 1, the monitor display unit 8 displays the vibration status, specifically, the vibration peak value and the vibration set value for each of the eight channels.

Further, the control unit 7 detects the peak value of each of the vibration sensors 2a to 2h and outputs it to the peak hold unit 9. The peak hold unit 9 erases the data of the original peak value when the peak value of the vibration is updated, and holds the new peak value data. The control unit 7 outputs an abnormal vibration alarm signal to the display lamp group 10 when detecting an abnormal signal from any of the eight channels from each of the vibration sensors 2a to 2h. Therefore, it is displayed that any of the indicator lights corresponding to the abnormal parts of the indicator lights 10a to 10h of the indicator lamp group 10 is abnormal. For example, when the indicator lamps 10a to 10h emit red light, it indicates an abnormal state, and when it is displayed in green color, it indicates a normal state. In this embodiment, the number of indicator lights 10a to 10h is 8, and the number of indicator lights 10a to 10h is set to be the same as that of the vibration sensors 2a to 2h. Needless to say, it may be set according to. On the other hand, the control unit 7 automatically samples the vibration values up to channels 1 to 8 of the multiplexer unit 3, and outputs an abnormal signal to the batch abnormal signal output unit 17 and the display of the corresponding channel in which the vibration exceeding the set value occurs.

As described above, the control unit 11 includes the multiplexer unit 3, the A / D converter unit 4, the comparison operation unit 5, the comparison data memory unit 6, the control unit 7, the monitor display unit 8, and the peak hold unit 9. It is composed of a combination of each component.

In FIG. 1, A is the overall configuration of the abnormal vibration detection device according to the present invention. Reference numeral 12 denotes a vibration level setting volume, which sets the vibration level by a rotating operation. Reference numeral 13 is a sensitivity adjusting volume, and when the volume is rotated, the sensitivity is adjusted. Reference numeral 18 denotes a channel selection switch section, which has eight channel switches 18a to 18h corresponding to the eight vibration sensors 2a to 2h. Reference numeral 14 is a peak hold switch, and when it is turned on, it becomes a vibration peak value display mode. When the desired channel switch 18a to 18h of the channel selection switch section 18 is turned on, the vibration peak value of the corresponding channel is displayed on the monitor display section 8. Is displayed. Reference numeral 15 is a vibration level setting switch, and when turned on, the vibration level setting mode is set. Then, when the vibration level setting volume is turned and the desired channel switches 18a to 18h of the channel selection switch section 18 are turned on, the vibration levels of the eight channels are set, and the vibration values are displayed on the monitor. Displayed in Part 8. Reference numeral 16 is a sensitivity setting switch, which is operated when inspecting each system of the vehicle. When this is turned on, the sensitivity setting mode is set. Then, the desired channel switches 18a to 18h of the channel selection switch section 18 are turned on, and the sensitivity adjustment volume 13 is turned to adjust the sensitivity of each of the eight channels.

The abnormal vibration detection device for a railway vehicle according to the present invention is apparent from the above-described embodiment, and its operation will be described below. Various electric devices such as resistors and relays are attached to a bogie of a railway vehicle. For example, a vibration sensor 2a is attached to the above relay system. Then, when the relay is attached to the trolley in a loose state due to long-term use, the signals output from the plurality of vibration sensors 2a to 2h are sent to the multiplexer unit 3. The multiplexer unit 3 automatically and time-divisionally samples the vibration values of 8 channels. Therefore, analog signals from other vibration sensors including the vibration sensor 2a and the multiplexer unit 3 are input to the A / D converter unit 4. The A / D converter section 4 converts the analog signal into a digital signal, and inputs the detected vibration data as a digital value to the comparison operation section 5 in the subsequent stage. On the other hand, since the railway personnel have operated the vibration level setting volume 12 and the vibration level setting switch 15 in advance, the reference vibration data signal is input to the comparison calculation section 5 from the comparison data memory section. Then, the comparison calculation unit 5 detects an abnormal vibration of the vibration sensor 2a and derives an output signal to the control unit 7. The vibration sensor 2a sends the vibration data to the A / D converter unit 4 by a signal composed of vibration data by the multiplexer unit 3 by the time division sampling method. And it has realized high space factor and cost performance.

The control unit 7 operates based on the signal from the comparison calculation unit 5, and outputs an abnormal vibration warning signal to one of the indicator lamps 10 a of the indicator lamp group 10. This indicator light 10a corresponds to the vibration sensor 2a and emits "red" indicating that it is abnormal. Therefore, the railway personnel can recognize that the relay is loosely installed at the place where the abnormal vibration detector A is installed. Then, the railway personnel can go to the bogie of the railway vehicle and loosen the relay. If the looseness of the relay disappears, the vibration sensor 2a does not derive the output signal of the abnormal vibration, and the indicator lamp 10a of the indicator lamp group 10 emits "green" indicating that it is normal. Therefore, railway personnel recognize that the relay is properly attached to the trolley.

On the other hand, the control unit 7 outputs a signal to the monitor display unit 8 and the peak hold unit 9. As described above, the monitor display unit 8 displays the vibration peak value of each channel, for example, the channel corresponding to the vibration sensor 2a. If the vibration peak value is updated, the updated peak value is displayed. Further, the control unit 7 outputs a signal to the collective abnormality signal output unit 17 to output a signal indicating that the vibration sensor 2a is abnormal.

Although the embodiment described above is the case where the vibration sensor 2a is installed in the relay system, the same operation is performed even when the vibration sensors 2b to 2h are installed in other systems, and an abnormal vibration state is generated by the railway personnel. To announce. Further, in the above description, by installing a buzzer instead of the indicator lamp group 10, it is possible to warn of an abnormal state by sound.

[0014]

[Effect of device]

 Since the present invention has the above structure and operation, it has the following unique effects. (1) Railway personnel can monitor and detect abnormal vibration conditions of electrical equipment of each system installed on the bogie at the installation location of the abnormal vibration detection device, and immediately deal with installation defects. You can (2) Abnormal parts can be automatically and promptly detected, eliminating the need for abnormal inspection man-hours for electrical equipment installed on the trucks of each system. (3) It is possible to completely detect the presence or absence of abnormal vibrations in all of the electrical equipment and the like mounted on the bogie, and prevent accidents on the railway vehicle due to omissions in detection. (4) No operation by railway personnel is required during operation of this device, abnormal vibrations can be automatically detected, and the number of personnel can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of an abnormal vibration detection device for a railway vehicle according to the present invention.

FIG. 2 is an electric circuit diagram showing an embodiment of an abnormal vibration detection device for a railway vehicle according to the present invention.

[Explanation of symbols]

 1 Vibration Sensor Head 2a to 2h Vibration Sensor 3 Multiplexer Section 4 A / D Converter Section 5 Comparison Calculation Section 6 Comparison Data Memory Section 7 Control Section 8 Monitor Display Section 9 Peak Hold Section 10 Indicator Light Group 10a to 10h Each Indicator Light 17 Batch error signal display

Claims (1)

[Scope of utility model registration request] 1. A vibration sensor installed on a bogie for each system of a railway vehicle, an A / D converter section for digitally converting a signal from the vibration sensor, and a memory section for storing preset vibration data. A comparison calculation unit that compares and calculates a signal from the A / D converter unit and a signal from a memory unit that stores the preset vibration data; and a monitor display signal and a vibration level by the signal from the comparison calculation unit. Abnormal vibration detection in a railway vehicle, comprising: a control unit that outputs a signal for holding the peak value of 1), and an indicator lamp that outputs a collective abnormal signal by the output signal from the control unit and displays a warning apparatus.