WO2016175182A1

WO2016175182A1 - Usage status management system for axle bearings

Info

Publication number: WO2016175182A1
Application number: PCT/JP2016/062953
Authority: WO
Inventors: 毅曹
Original assignee: Ntn株式会社
Priority date: 2015-04-30
Filing date: 2016-04-25
Publication date: 2016-11-03
Also published as: JP2016210209A; WO2016175182A8; CN107531259A; DE112016001978T5

Abstract

Provided is a usage status management system for axle bearings that is particularly useful in a railroad vehicle having no current collector or travel drive source, and with which, with a simple configuration, it is possible to manage the usage status of axle bearings. Mounted on a railroad vehicle (2) are a GPS receiver (12) and a communication device (14) for wirelessly transmitting the position information received by the receiver. A usage status management device (18) is provided on the outside, and the usage status management device (18) is provided with a travel distance calculation means (21) for calculating the distance traveled by the railroad vehicle (2) on the basis of data transmitted from the communication device (14) of the railroad vehicle (2). The railroad vehicle (2) is also provided with temperature sensors (13) for measuring the temperature of axle bearings (3), and the measured temperature is transmitted to the usage status management device (18) by the communication device (14).

Description

Axle bearing usage management system

Related applications

This application claims the priority of Japanese Patent Application No. 2015-092540 filed on April 30, 2015, the entire contents of which are incorporated herein by reference.

The present invention relates to an axle bearing use status management system for managing a travel distance, a bearing temperature during travel, and the like for maintenance of an axle bearing in a railway vehicle.

Various bearing maintenance systems and abnormality diagnosis systems have been proposed for railway vehicles. For example, in Patent Document 1, as an abnormality diagnosis system for a railway vehicle, an apparatus for determining an abnormality of a serious accident such as derailment or collision based on a detection signal from a sensor unit attached to the railway vehicle is performed by periodic inspection. A system has been proposed in which a function for detecting and processing an abnormality in a vehicle or a track is added. In addition,

JP 2012-100434 A

The system of Patent Document 1 adds an abnormality detection and processing function that is performed in a periodic inspection to a device that determines an abnormality of a serious accident, so that the entire system becomes complicated. For freight trains, a simple maintenance system is desired. In addition, the system of patent document 1 describes the example using position sensors, such as a GPS sensor, specifies the position on the track | truck where a rail vehicle drive | works, and is used for the specification etc. of the damage location of a track | truck.

For maintenance of railway vehicle axle bearings, it is necessary to grasp the usage status (travel distance, travel temperature, etc.). In the case of a passenger train, electricity is supplied to each vehicle and there are many fixed trains. Therefore, various means can be used and distance management for vehicle maintenance is enhanced. On the other hand, in the case of a freight train, electricity is not supplied to other than the towing vehicle, and the composition may change every time it is used, so it is difficult to grasp the usage status of each vehicle axle bearing.

Although there is a management method of managing according to the years of use, the years of use of the vehicle axle bearings and the actual use status (cumulative mileage) are usually greatly different, so the use status of the axle bearings cannot be accurately grasped.

The present invention solves the above-described problem, and is particularly useful in a railway vehicle having neither a current collector nor a travel drive source, and the use state of an axle bearing capable of managing the use state of the axle bearing with a simple configuration. The purpose is to provide a management system.

The axle bearing usage status management system according to one configuration of the present invention is a system for managing the usage status of at least one axle bearing of a railway vehicle. The present axle bearing usage management system includes a GPS receiver mounted on the railway vehicle, a communication device mounted on the railway vehicle and wirelessly transmitting position information received by the GPS receiver, and the railway vehicle And a usage status management device provided outside. The usage status management device includes travel distance calculation means for calculating a travel distance of the rail vehicle based on position information transmitted from the communication device of the rail vehicle.

According to this configuration, the travel distance of the railway vehicle can be calculated by the use state management device only by mounting the GPS receiver and the communication device that transmits the received position information on the railway vehicle. From this calculated travel distance, it is possible to know how many times the axle bearing of the railway vehicle has rotated. Since it is only necessary to mount a GPS receiver and a communication device on a railway vehicle, it is sufficient if there is a power source that can drive them, and a simple power source is sufficient. Therefore, the usage status of the axle bearing can be managed with such a simple configuration. Therefore, it is particularly useful when the railway vehicle has neither a current collector nor a travel drive source. The railway vehicle is preferably a railway vehicle that has neither a power source for traveling driving nor a current collector, like an intermediate vehicle of a freight train. In addition, even if the composition of railway vehicles in the train changes, this system is not affected because it does not use a current collector or a travel drive source.

The apparatus further comprises at least one temperature sensor that is installed in the railway vehicle and detects a temperature of each of the at least one axle bearing, and the communication device transmits information on the temperature detected by the at least one temperature sensor. May be.

According to this configuration, the temperature of the axle bearing can be monitored in real time by the use state management device outside the railway vehicle. Many of the bearing abnormalities can be determined by temperature, and the use condition, wear, abnormality, etc. of the axle bearing can be accurately managed based on the total number of rotations of the bearing based on the travel distance and the bearing temperature.

Furthermore, a self-power generation device that is provided in the railway vehicle and generates electric power by energy generated by the traveling of the railway vehicle may be provided. This self-generated power can drive a GPS receiver, a communication device, a temperature sensor, and the like. Because it uses self-power generation, it can save time and effort for battery replacement, unlike the case of using batteries. With rail vehicles, there are many vehicles that organize trains, and many trains need to be managed. Even if it is easy to replace the batteries of a single rail vehicle, the batteries of all the rail vehicles to be managed are used. It takes time and effort to manage. Such labor can be omitted or simplified by self-power generation. Also, in railway vehicles that are towed and run, various energies such as wind, axle rotation, vibration, and heat generation are generated by running, so a power generation method that uses the optimum energy according to the usage conditions and installation environment etc. Use it.

The power generation method of the self-power generation device may be a wind power generation method that generates power by the energy of traveling wind generated by the traveling of the railway vehicle. According to wind energy, energy can be converted into electricity regardless of wheel rotation systems such as axles.

The power generation method of the self-power generation device may be an axle power generation method in which power is generated by the energy of axle rotation generated by the traveling of the railway vehicle. For example, a dynamo or the like can be used, and a generator with a simple configuration can be used.

The power generation method of the self-power generation device may be a thermoelectric element power generation method that generates power using the heat generated by the axle box of the axle caused by the traveling of the railway vehicle. Even when a thermoelectric element is used, power can be generated with a simple configuration.

The power generation method of the self-power generation device may be a piezoelectric element power generation method having a self-power generation function by vibration during traveling. Railcars generate vibrations at various points during travel, so the vibrations are used for power generation. Even when a piezoelectric element is used, power can be generated with a simple configuration.

The communication device may be configured to transmit using a mobile communication network. Since mobile communication networks such as a mobile phone network are well established over a wide range, even in a railway vehicle having a wide traveling area, data can be transmitted to a usage status management device far away.

The communication device may be configured to transmit the data to the outside by train digital radio. The train digital radio is a system that digitally communicates between a cab of a railway vehicle, a vehicle base, a command room, and the like, and is widely adopted. By using such an existing train digital radio to transmit position information by the GPS receiver and data such as temperature by a temperature sensor, this axle bearing usage status management system can be constructed more easily.

Any combination of at least two configurations disclosed in the claims and / or the specification and / or drawings is included in the present invention. In particular, any combination of two or more of each claim in the claims is included in the present invention.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same reference numerals in a plurality of drawings indicate the same or corresponding parts.
It is explanatory drawing which shows the outline | summary of the axle bearing usage condition management system which concerns on one Embodiment of this invention. It is a block diagram which shows the conceptual structure of the axle bearing usage condition management system of FIG. It is a perspective view of an example of the axle box provided in the vehicle to which the axle bearing usage status management system of FIG. 1 is applied. It is a fractured perspective view which shows an example of the axle bearing of the axle bearing usage condition management system of FIG.

An embodiment of the present invention will be described with reference to FIGS. This axle bearing usage status management system is a system that manages the usage status of each axle bearing 3 (FIG. 2) in a plurality of railway vehicles 2 of a railway train 1. In this embodiment, these railway vehicles 2 have neither a current collector nor a travel drive source.

As shown in FIG. 1, when the train 1 is a freight train, the intermediate railway vehicle 2, which is a vehicle other than the towing vehicle 2 </ b> A serving as the leading vehicle or the last vehicle, includes a current collector that receives electricity from an overhead line, an electric motor Neither a traveling drive source such as a diesel engine or the like is provided. That is, no power supply is installed. This usage status management system is advantageously applied to such a railway vehicle 2. This axle bearing usage status management system is advantageously applied not only to a freight train but also to the railcar 2 in a mixed train of passengers and freight.

As shown in FIG. 2, each rail vehicle 2 of the train 1 includes a plurality of carriages 6. A plurality of axle bearings 3 are installed on each carriage 6 via axle boxes 4 respectively. For example, as shown in FIG. 4, the axle bearing 3 includes a double row tapered roller bearing in which rolling elements 9 are interposed between the inner ring 7 and the outer ring 8 in a double row. The outer ring 8 of the bearing 3 is installed in the axle box 4, and the shaft end of the axle 10 is fitted to the inner periphery of the inner ring 7. The end face of the axle 10 is covered with a front cover 11 and the axle bearing 3 cannot be seen from the outside, but in FIG. 2, the axle bearing 3 is shown as being exposed for convenience of illustration.

In FIG. 2, this usage status management system has a GPS receiver 12 (global positioning system) installed on each rail vehicle 2 of a train 1 and a temperature sensor 13 installed on each axle bearing 3 of the rail vehicle 2. Thus, the position information of the axle bearing 3 and the operating temperature during traveling are acquired. The wireless communication device 14 transmits the acquired information to the use status management device 18 of the vehicle management center via a mobile communication network such as a mobile phone network or a communication network 26 such as a train digital radio.

The communication device 14 transmits the position information, which is the acquired information, and the operating temperature during travel with an identification number for identifying each railway vehicle 2 and an identification number for identifying each axle bearing 3. The usage status management device 18 can calculate the travel distance based on the acquired position information, and can detect a bearing abnormality by monitoring the temperature information of each axle bearing 3 in real time.

The train digital radio is a system that digitally communicates between a cab of a railway vehicle, a vehicle base, a command room, and the like. When train digital radio is applied to the communication network 26, the data transmitted by each rail vehicle 2 of the train 1 is, for example, the train digital radio communication device (not shown) provided in the towing vehicle 2A such as the leading vehicle. The data may be transmitted from the communication device to the usage status management device 18 together. Instead, it may be transmitted directly from the communication device 14 of each railway vehicle 2 to the train digital radio communication network 26.

Further, as the power source 15, a self-power generating device 16 that self-generates power while the railway vehicle 2 made of a freight vehicle is traveling may be provided. The GPS receiver 12, the temperature sensor 13, and the communication device 14 are driven using the power generated by the self-power generation device 16. Specifically, the power source 15 includes a secondary battery 17 in addition to the self-power generation device 16. The power generated by the self-power generation device 16 is temporarily stored in the secondary battery 17, and the secondary battery 17 supplies the power. Power is supplied to each device such as the GPS receiver 12. The GPS receiver 12, the temperature sensor 13, and the communication device 14 are vehicle-mounted devices 26 for the railway vehicle 2 in this usage status management system.

It is sufficient that one GPS receiver 12 is provided in the railway vehicle 2. The GPS receiver 12 is installed on the lower surface of the vehicle body 2a, the carriage 6 or the like. For example, as shown in FIG. 3, the temperature sensor 13 is installed in the axle box 4 and detects the temperature of the axle bearing 3. The temperature sensor 13 may be directly attached to the axle bearing 3. One communication device 14 and one power source 15 may be provided in the railway vehicle 2 as well as the GPS receiver 12. The communication device 14 and the power source 15 are both installed on the lower surface of the vehicle body 2a, the carriage 6 or the like. The GPS receiver 12, the communication device 14, and the power supply 15 may be collectively stored in one case or the like and unitized. In addition to these, the temperature sensor 13 may also be united together. Even if the temperature sensor 13 is unitized in this manner, a plurality of the temperature sensors 13 are installed on the axle bearings 3 apart from each other, and therefore, the communication device 14 and the power source 15 are connected to each other by a signal and power wiring (not shown). Connected. Instead of the wiring, the temperature sensor 13 and the communication device 14 may be connected via the short-range wireless communication means (not shown), or the power supply from the power supply 15 may be performed.

The self power generation device 16 of the power supply 15 may be any of the following self power generation devices.
(1) Power generation by vehicle wind. Specifically, it is a wind power generation system (a rotating power generator that rotates a rotor of a generator by rotating an impeller (not shown) by traveling wind).
(2) Power generation by axle rotation. Specifically, it is an axle power generation system (a rotary power generator that transmits the rotation of the axle and rotates the rotor (not shown) of the generator).
(3) Power generation due to heat generated by the axle box 4 during traveling. Specifically, it is a thermoelectric power generation method (a power generation device that converts heat of the axle box 4 into electric energy by a thermoelectric element (not shown)).
(4) Power generation by vibration during driving. Specifically, a piezoelectric element power generation method (a power generation apparatus that compresses a piezoelectric element (not shown) by vibration and converts it into electrical energy).

Among these power generation methods, one optimal power generation method is adopted according to the use conditions and installation environment. Instead, some of these power generation methods or all of the power generation methods may be used to generate power.

Note that the power supply 15 may be constituted by only the secondary battery 17 or only the primary battery (not shown) without providing the self-power generation device 16.

The usage status management device 18 may be a computer serving as a server machine, a general-purpose computer, or a computer similar to a notebook personal computer, and is configured by a computer having a processing capacity corresponding to the scale of application. The usage status management device 18 includes a communication device 19, a vehicle identification unit 20, a travel distance calculation unit 21, a vehicle speed calculation unit 22, an abnormality monitoring unit 23, a history recording unit 24, and a screen display unit 25. The processor of the computer constituting the usage status management apparatus is programmed to execute these means 18 to 25.

The communication device 19 is a device that communicates with the communication device 14 in the vehicle-mounted device 26, and performs communication via the communication network 26. The vehicle specifying means 20 is means for specifying which axle bearing 3 of which railway vehicle 2 is based on the identification number transmitted with the acquired information from the communication device 14 of the vehicle-mounted device 26. is there. The travel distance calculation means 21 travels according to a predetermined arithmetic expression using a wheel diameter or the like for each axle bearing 3 from the amount of change in the position information of the GPS receiver 12 transmitted for each rail vehicle 2. It is a means for calculating the distance. The travel distance calculation means 21 further calculates the cumulative travel distance by integrating the travel distances calculated for each operation of the railway vehicle 2. If the diameters of the wheels supported by the wheel bearings 3 in the same railway vehicle 2 are all the same, only the traveling distance of one wheel bearing 3 is calculated for each operation of the railway vehicle 2, and the calculated traveling distances are individually calculated. It may be added to the travel distance managed for each axle bearing 3. The vehicle speed calculation means 22 is a means for calculating the vehicle speed of the railway vehicle 2 from the speed of change of the positional information of the GPS receiver 12 transmitted for each railway vehicle 2, that is, the differential value of the travel distance.

The abnormality monitoring means 23 monitors the temperature measured for each axle bearing 3 of each railway vehicle 2 and transmitted from the communication device 14. The abnormality monitoring means 23 further determines the occurrence of an abnormality in the axle bearing 3 when it meets a predetermined abnormality determination condition such that the temperature becomes equal to or higher than the set temperature in the monitoring process.

The history recording unit 24 records a vehicle speed history calculated by the vehicle speed calculation unit 22, a movement history, a travel distance calculated by the travel distance calculation unit 21, and a record recorded in the storage unit. Means having a processing function.

The screen display means 25 is provided in the use status management device 18 with the processing results of the travel distance calculation means 21, the vehicle speed calculation means 22, and the abnormality monitoring means 23, and items recorded in the history recording means 24. It is means for outputting and displaying on a screen of an image display device (not shown) such as a liquid crystal display device. This display is output in accordance with the instruction content from an input means (not shown).

According to the axle bearing usage management system of this configuration, the following advantages can be obtained.
The GPS receiver 12 can accurately grasp the current vehicle location, and can also manage the vehicle speed and record the movement history and travel distance. In addition, the train 1 can be managed even if the composition changes.
Abnormality of the axle bearing 3 can be detected by monitoring the temperature information of the axle bearing 3 by the temperature sensor 13 in real time. The usage situation can be accurately grasped, and the safety of the railway vehicle 2 is improved.
The GPS receiver 12, the temperature sensor 13, and the communication device 14 use the power generated by the self-power generating device 16, so that no external power supply is required.

As mentioned above, although the form for implementing this invention based on the Example was demonstrated, embodiment disclosed here is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

2: Vehicle 3: Axle bearing 12: GPS receiver 13: Temperature sensor 14: Communication device 18: Usage status management device 21: Travel distance calculation means

Claims

A system for managing the usage of at least one axle bearing of a railway vehicle,
A GPS receiver mounted on the railway vehicle;
A communication device mounted on the railway vehicle and wirelessly transmitting position information received by the GPS receiver;
A usage status management device provided outside the railway vehicle,
The usage status management device is:
An axle bearing usage status management system comprising travel distance calculation means for calculating a travel distance of the railway vehicle based on position information transmitted from the communication device of the railway vehicle.
The axle bearing use status management system according to claim 1, further comprising:
At least one temperature sensor installed in the railway vehicle and detecting each temperature of the at least one axle bearing of the railway vehicle;
An axle bearing usage management system in which the communication device transmits temperature information detected by the at least one temperature sensor.
In the axle bearing usage status management system according to claim 1 or 2,
An axle bearing usage status management system provided with a self-power generation device that is provided in the railway vehicle and generates electric power by energy generated by travel of the railway vehicle.
4. The axle bearing usage status management system according to claim 3, wherein the power generation method of the self-power generation device is a wind power generation method that generates electric power using traveling wind energy generated by traveling of the railway vehicle.
4. The axle bearing usage status management system according to claim 3, wherein the power generation method of the self-power generation device is an axle power generation method that generates electric power by the energy of rotation of the axle caused by running of the railway vehicle.
4. The axle bearing usage status management system according to claim 3, wherein the power generation method of the self-power generation device is a thermoelectric element power generation method that generates electricity by the heat generated by the axle box of the axle caused by running of the railway vehicle. Situation management system.
4. The axle bearing usage status management system according to claim 3, wherein the power generation system of the self-power generation device is a piezoelectric element power generation system that generates electric power by vibration energy generated by running of the railway vehicle.
8. The axle bearing use status management system according to claim 1, wherein the communication device transmits using a mobile communication network.
The axle bearing usage status management system according to any one of claims 1 to 7, wherein the communication device transmits the data to the outside by train digital radio.