JP2003240626A - Wheel load acquiring device, wheel load acquiring method, rolling stock, maintenance method of rolling stock and maintenance method of track - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a method capable of acquiring the wheel load of an individual wheel on an optional truck simultaneously during traveling and simply during stopping, rolling stock using the device and the method, a maintenance method of the rolling stock and a maintenance method of a track. <P>SOLUTION: Information on the internal pressure of an air spring 13 is acquired by a pressure sensor 14, and information on the torsion of the truck 16 is detected by a strain gage 28. The relationship between the total value of wheel loads of wheels 20 on one side in the width direction of the truck and the total value of wheel loads of wheels 20 on the other side is acquired based on the information on the internal pressure of the air spring 13, and information on the distribution of wheel loads of the individual wheel 20 on each side is acquired based on the information on the torsion, and the wheel load of the individual wheel 20 can be acquired. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel load obtaining device, a wheel load obtaining method, a railway vehicle, a railway vehicle maintenance method, and a track maintenance method.

[0002]

2. Description of the Related Art A running railway vehicle is subject to various influences such as a cant, a centrifugal force when traveling on a curved line, a side wind, and a deviation of a track. Wheel load is important as an indicator of safe operation of railway vehicles because the risk of derailment increases if the left and right wheel weight balance of the wheel axle is extremely disturbed during driving.

The following two methods are mainly known as such wheel load measuring methods. One is a ground-side measurement method in which a strain gauge is installed on the rail and the vehicle is run on that rail to measure the wheel load.The other is a vehicle-side measurement method in which a strain gauge is installed on the wheel and the wheel load is measured. is there.

[0004]

However, the conventional wheel load measuring method has the following problems. That is, in the ground side measuring method, the wheel load of an arbitrary wheel passing through the wheel load measuring point where the strain gauge is installed can be measured, while the measuring point is the wheel load measuring point, for example, a vehicle lead-in line or the like. It is extremely limited only to that, and it is impossible to measure the change in wheel load of a vehicle traveling in various places in real time. In addition, in the vehicle-side measurement method, the wheel load during running can be measured in real time, but since the special wheel is used, only the wheel load of the specific wheel of the specific truck can be measured. As described above, with both of these measurement methods, it was not possible to easily obtain the wheel load of the wheel of the trolley at any measurement point in real time.

The present invention has been made in view of the above-mentioned problems, and the wheel load of each wheel of a truck is set to an arbitrary measurement point,
(EN) Provided are a device and a method that can be easily acquired in real time when traveling and when stopped in any trolley, a railway vehicle using the same, and a railway vehicle maintenance method and a track maintenance method. The purpose is to

[0006]

A wheel load obtaining apparatus according to the present invention is a bogie in which a plurality of wheel shafts having wheels are arranged on a bogie frame so as to be separated from each other in the rolling direction of the wheel shaft. A wheel weight acquisition device for acquiring wheel weights of a railway vehicle including a vehicle body arranged above and a plurality of air springs arranged on the bogie frame in the width direction of the vehicle and supporting the vehicle body. An internal pressure acquisition unit that acquires information about the internal pressure of the air spring, a twist detection unit that detects information about the twist of the truck, and a wheel that acquires the wheel weight of the wheel based on the acquired information about the internal pressure and the information about the twist. And a weight estimating means.

In the wheel load obtaining method according to the present invention, a bogie including a plurality of wheel shafts having wheels spaced apart in the rolling direction of the wheel shaft with respect to the bogie frame, and a bogie frame disposed on the bogie. A wheel load obtaining method for obtaining the wheel load of a railroad vehicle including a vehicle body and a plurality of air springs arranged on the bogie frame in the width direction of the truck and supporting the vehicle body. An internal pressure acquisition step of acquiring information about the internal pressure of the, and a twist detection step of detecting information about the twist of the truck,
A wheel weight estimating step of acquiring a wheel weight of the wheel based on the acquired information about the internal pressure and the acquired information about the twist.

According to the wheel load obtaining apparatus and the wheel load obtaining method of the present invention, the wheel load of the wheel on one side in the width direction of the truck is based on the information about the internal pressure of the air springs arranged in the truck width direction. The relationship between the total value of and the total value of the wheel weights of the wheels on the other side is acquired, and based on the information about the twist,
Information about the distribution of the wheel loads of the individual wheels on each side is obtained, and the wheel loads of the individual wheels can be obtained.

Here, the wheel weight estimating means, based on the information on the internal pressure, information on the total value of the wheel weights of the wheels on one side in the width direction of the truck and the sum of the wheel weights of the wheels on the other side in the width direction of the truck. Width-wise wheel overlapped total value acquisition means for acquiring information regarding values, and wheel overlapped total value distribution means for distributing information regarding each total value to individual wheels on each side, based on information about twist. Preferably, the wheel weight of each wheel is suitably obtained.

Further, the twist detection means is preferably a strain gauge attached to the bogie frame. By measuring the strain of the bogie frame with this strain gauge, information about the twist in the width direction of the bogie can be easily obtained at low cost.

Here, the bogie frame is provided with a pair of side beams which are spaced apart in the width direction of the bogie and extend in the front-rear direction of the bogie, and when the strain gauge is attached to the side beams, the twist of the bogie is suitably detected. To be done.

Further, the bogie frame is provided with a pair of side beams that are spaced apart in the width direction of the bogie and extend in the front-rear direction of the bogie, and a lateral beam that connects substantially central portions of the side beams, and the strain gauge is It is preferably attached to a cross beam.

By installing the strain gauges on the lateral beams in this way, the strain due to the twist in the widthwise direction of the carriage is preferably detected, and the wheel load can be acquired more accurately.

Further, the lateral beams are a pair of main lateral beams which are spaced apart in the front-rear direction of the bogie and connect the side beams, and a pair of connecting beams which are spaced apart in the width direction of the bogie and connect the main lateral beams.
And the strain gauge is preferably attached to the connecting beam.

In a bogie frame provided with a connecting beam, by attaching a strain gauge to the connecting beam, distortion due to twist in the width direction of the bogie can be detected more preferably.

[0016] A railway vehicle according to the present invention has the above-mentioned wheel load acquisition device, an alarm means for issuing an alarm to a crew member, and an alarm for driving the alarm means when the acquired wheel load is monitored and a predetermined dangerous state is determined. And a control means.

According to the railway vehicle of the present invention, when the wheel load of the railway vehicle is in a predetermined dangerous state, the crew member is automatically notified that there is a risk of derailment or the like.

A railway vehicle according to the present invention controls the speed control means when the wheel load acquisition device described above, speed control means for controlling the vehicle speed, and the acquired wheel weight are monitored and a predetermined dangerous state is determined. And a speed management unit for controlling the speed.

According to the railway vehicle of the present invention, when the wheel load of the railway vehicle is in a predetermined dangerous state, the traveling speed of the vehicle is automatically controlled as a risk of derailment or the like.

A railway vehicle according to the present invention is characterized by including the wheel load obtaining device, a recording unit capable of recording information, and a recording control unit for recording the obtained wheel load in the recording unit. .

According to the railway vehicle of the present invention, the wheel load, which is an index of derailment risk, etc., is recorded, and inspection / analysis etc. can be performed in the subsequent process.

Here, it is preferable that the recording means includes a traveling point recognition means for recognizing the traveling point, and the recording control means records the wheel weight in the recording means in association with the traveling point where the wheel weight is acquired.

Thus, when the recorded wheel load has an abnormal value or the like, the point where the wheel load is measured can be easily grasped, and maintenance and inspection can be facilitated.

[0024] A railway vehicle maintenance method according to the present invention is a railway vehicle maintenance method provided with the above recording device, wherein the wheel weight recorded in the recording means is used as an index for maintenance inspection of the railway vehicle. To do.

According to the railway vehicle maintenance method of the present invention, the maintenance and inspection of the railway vehicle can be efficiently performed by inspecting the wheels, axles, bogies, etc. where the abnormal value of the wheel load has occurred. .

The track maintenance method according to the present invention is a method for maintaining a track on which a railway vehicle travels, in which the wheel weight is recorded in the recording means in association with the traveling point, and the wheel weight recorded in the recording means. Is used as an index for track maintenance inspection.

According to the track maintenance method of the present invention, the point where the abnormal value of the wheel load or the like occurs can be easily grasped, and the track corresponding to this point can be inspected to efficiently perform the track maintenance inspection. It can be carried out.

[0028]

DETAILED DESCRIPTION OF THE INVENTION Referring to the accompanying drawings,
A preferred embodiment of the wheel load obtaining device according to the present invention will be described in detail. In the description of the drawings, the same or corresponding elements will be denoted by the same reference symbols, without redundant description.

FIG. 1 is a front view showing the construction of a railway vehicle equipped with the wheel load obtaining apparatus according to this embodiment, and FIG. 2 is a partial sectional side view of the railway vehicle shown in FIG. The railway vehicle 10 shown in FIGS. 1 and 2 mainly includes a trolley 16 that is a traveling device, a vehicle body 12 that is disposed over the two trolleys 16, and a trolley 16
And an air spring 13 for supporting the vehicle body 12 above.

As shown in FIG. 3, the bogie 16 is provided with a bogie frame 19 which is substantially H-shaped when viewed from above. The bogie frame 19 includes a pair of substantially rectangular side beams 51, 51 extending in the front-rear direction of the bogie 16 and separated from each other in the width direction.

The side beams 51, 51 extend in the width direction of the carriage 16 and are slightly separated from each other in the front-rear direction.
A pair of main transverse beams 52 each penetrating substantially the central portion of 1, 51,
They are connected by 52. Furthermore, the main cross beams 52, 5
The two members are connected to each other by connecting beams 53, 53 that are separated from each other in the width direction inside the side beams 51, 51 and extend in the front-rear direction. The main cross beams 52, 52 and the connecting beams 53, 53 are cross beams. It comprises 58.

At the end portions of the main horizontal beams 52, 52, which are projecting outward from the side beams 51, a mounting table 55 is provided on which the projecting parts are connected and on which the air spring 13 is mounted. They are installed on both sides in the width direction.

Further, as shown in FIG. 2, below the front end and below the rear end of the bogie frame 19, wheel shafts 11 having wheels 20 and axles 21 are arranged so that they can roll in the front-rear direction. There is. As shown in FIG. 1, both ends of the wheel shaft 11 are rotatably supported by a shaft box 25 serving as a bearing. The shaft box 25 is rotatably supported by a bogie frame 19 and a shaft spring. Each of the side beams 51, 51 is connected via 17 to the lower side of the end of the side beam 51. The carriage 16 is capable of traveling in the front-rear direction on the track 15 including rails.

The air spring 13 is mounted on the mounting table 5 of the bogie frame 19.
5 and 55 are respectively installed to support the vehicle body 12. The air spring 13 has an auxiliary air chamber 63 communicating with the air spring 13.
Is provided. Further, an air spring differential pressure valve 24 is installed between the air springs 13 and 13, and the pair of air springs 13 and 1
The internal pressure difference of 3 is set to a predetermined value or less.

Further, as shown in FIG. 2, the air spring 13
Is connected to an automatic height adjusting valve 62 for controlling the height of the vehicle body 12 at a constant level via a pipe 61, and the automatic height adjusting valve 62 is connected to the original height via a pipe 64 to supply air. The air reservoir 65 is connected.

The vehicle body 12 has a rectangular parallelepiped outer shape for accommodating passengers and the like, and one front side of the vehicle body 12 is a passenger compartment 22. In the crew room 22, there is a mass control (speed control means) that controls the traveling of the railroad vehicle 10 according to the operation of crew members, ATS (automatic train stop device) signals, and the like.
23 and an alarm device (alarm means) for informing the crew member of the abnormality
26 and are installed.

Further, on the vehicle body 12, a traveling point recognizing device (traveling point recognizing means) 60 for recognizing a current position where the railway vehicle 10 is traveling and outputting a code or the like corresponding to the point, and a wheel load (details will be described later). Recording device (recording means) 27 such as a memory card in which information such as) is recorded.

And, in particular, the railway vehicle 1 according to this embodiment.
At 0, pressure sensors (internal pressure acquisition means) 14 and 14 for measuring the internal pressures of the pair of air springs 13 of the carriage 16 respectively.
And the bogie frame 19 due to the twist of the bogie 16 around the width direction.
Strain gauge 28 (twist detection means) for measuring the strain of
And the individual wheels 20 based on the measured internal pressure and strain.
And a wheel load acquisition / control device 40 that controls the railway vehicle 10 on the basis of the acquired wheel load. The wheel load acquisition device 90 is configured by these.

The pressure sensor 14 is attached to each of the pipes 61 connecting the air spring 13 and the automatic height adjusting valve 62, and is easy to remove and attach.

As shown in FIG. 3, the strain gauge 28 forms an angle of about 45 ° with respect to a line parallel to the axis of the connecting beam 53 on the end surface of one connecting beam 53 of the bogie frame 19. And is attached so as to avoid the welded part,
The distortion due to the twist of the carriage 16 around the width direction can be efficiently detected.

As shown in the block diagram of FIG. 4, the wheel weight acquisition / control device 40 is a control device 18 which is a CPU, and a ROM 32 in which a processing procedure of the control device 18 (described in detail later) is stored in the form of a program. And data such as truck weight, track width, wheel-axis distance, pressure receiving area of the air spring 13, air spring 13 width direction interval, height of the air spring 13, and calibration data of strain (details will be described later). RAM 31 in which is stored
And are equipped with.

The control device 18 obtains the internal pressure measured by the pressure sensor 14 and the strain detected by the strain gauge 28, and estimates the wheel load of the individual wheels of the bogie 16 based on them. And wheel weight estimating means 4
1 to monitor the wheel load obtained in real time, and to monitor in real time the alarm control means 45 for controlling the alarm device 26 when it is determined to be in a predetermined dangerous state, and the wheel load obtained by the wheel weight estimating means 41. , Speed control means 4 for controlling the mass control 23 when it is determined that the dangerous state is predetermined.
6 and a recording control unit 47 that records the obtained wheel weight in the recording device 27 in association with the current traveling position recognized by the traveling point recognition device 60, and is configured to achieve the same function.

Further, the wheel load estimating means 41 is composed of the pressure sensor 1
The internal pressure of the pair of left and right air springs 13 detected by 4,
Based on the specification data stored in the RAM 31 and the left wheel weight total value of the truck 16 and the right wheel weight total value of the wheel 16 on the right and left wheel overlap total value acquisition means (width direction wheel overlap meter (Value acquisition means) 42, the strain of the bogie frame 19 measured by the strain gauge 28, and the torsion of the bogie 16 based on the calibration data and the specification data of the strain gauge 28 stored in the RAM 31. Based on the above, the wheel overlapped total value distribution means 4 for distributing the above-mentioned wheel overlap totalized values for the left and right to the individual wheels 20 on each side to obtain the wheel weights of the individual wheels 20.
3 to achieve the same function.

Next, the processing procedure of the wheel weight acquisition / control device 40 executed in accordance with the program written in the ROM 32 will be described with reference to the flow chart shown in FIG.

First, prior to obtaining the wheel load, for example, when the railway vehicle 10 departs from the garage,
The wheel load acquired by the wheel load acquisition / control device 40 according to the present invention as described below is compared with the wheel load acquired by a conventional ground side wheel load measuring device (not shown) or the like, and based on this, Calibration data for zero compensation of the strain gauge 28 is acquired, and this calibration data is input to the RAM 31. Generally, the strain state of the strain gauge 28 when the power is turned on is often set as the zero point of the strain gauge 28. However, when the zero point is set, the track 15 is distorted, or the bogie frame 19 is initially twisted. In some cases, the state in which the bogie frame 19 is distorted is set as a zero point, which causes an error in the measurement of the wheel load. Therefore, the zero point of the strain gauge 28 is properly adjusted by previously compensating for the zero point by comparison with the wheel weight obtained by such another wheel weight measuring device, and the wheel weight is acquired. Precision is improved.

After the calibration data is input in this way, first, the wheel load acquisition / control device 40 executes step 1 (S
In 1), the internal pressures of the pair of air springs 13 sent from the pressure sensor 14 are acquired. Next, step 2
In (S2), based on these internal pressures and the specification data stored in the RAM 31, the total value of the wheel weights of the wheels 20 on the left side of the bogie 16 and the total value of the wheel weights of the wheels 20 on the right side, To get.

Specifically, for example, the internal pressures of the left and right air springs 13, 13 are multiplied by the pressure receiving areas of the air springs 13, 13 to obtain the respective weights of the air springs 13, 13.
Further, by taking into consideration the specification data in the width direction, these weights are converted into respective weights at the wheel width position. Further, to these weights, the weight of the carriage 16 is divided into left and right parts based on the internal pressure of the air spring 13 and the like, and the wheel weight received by all the wheels on the right side of the carriage 16 and the weight on the left side are added. It is possible to obtain the total value of the wheel weights received by all the wheels. By taking the internal pressures of the pair of air springs 13, 13 of the other bogie 16 of the railway vehicle 10 into consideration,
The estimation accuracy of the total value of the wheel weights received by all the wheels on the right side of the carriage 16 and the total value of the wheel weights received by all the wheels on the left side is improved.

Next, in step 3 (S3),
The strain of the bogie frame 19 is acquired from the strain gauge 28, and in step 4 (S4), this strain is calibrated with calibration data, and the twist around the width direction of the bogie 16 is obtained based on the specification data. The total value of the wheel weights of the wheels 20 and the total value of the wheel weights of the right wheels are distributed to the individual wheels 20 on each side.

Specifically, for example, the calibrated bogie frame 1
Based on the strain of No. 9, the torsional moment applied to the bogie 16 around the width direction is obtained, and based on this torsional moment, the total value of the wheel weights on the left and right sides of the bogie 16 is calculated. And the wheel weights of the wheels 20 on the rear side, the wheel weights of the individual wheels 20 of the truck 16 can be acquired.

Next, in step 5 (S5), the wheel load acquisition / control device 40 causes the left and right wheels 2 to be separated for each wheel axle 11.
The wheel load uneven distribution degree is acquired based on the wheel load of 0. Here, as the wheel load uneven distribution, for example, a wheel load ratio, which is a ratio of left and right wheel loads, a wheel load coefficient obtained as (difference between left and right wheel loads / sum of left and right wheel loads), left and right wheel loads. The difference etc. can be used.

If the wheel load uneven distribution is higher than the risk reference value set in advance as the risk of derailment is high, the state of the railroad vehicle 10 is judged to be dangerous, and in step 6 (S6), The warning device 26 is driven to notify the crew of the danger, and in step 7 (S7), a control signal is transmitted to the emergency stop circuit or the like in the mass controller 23 to limit the traveling speed of the railway vehicle 10 and automatically perform an emergency. After stopping or slowing down, the process proceeds to step 8 (S8).

The degree of uneven distribution of wheel load is monitored in real time, and when there is a risk of derailment, the fact is automatically notified to the crew member. Therefore, it is confirmed that the railway vehicle 10 is in a dangerous state. Can be grasped instantly. Similarly, the degree of wheel load unevenness is monitored, and when there is a risk of derailment, the traveling speed of the railway vehicle 10 is automatically controlled to perform slowing or stopping, so that the safety of the railway vehicle 10 is improved. Has been.

On the other hand, if the wheel load uneven distribution degree is smaller than the risk reference value, it is determined that the risk is low, and the process proceeds to step 8 (S8).

In step 8, the data of the current traveling point of the railway vehicle 10 transmitted from the traveling point recognizing device 60 is acquired, and in step 9 (S9), the wheel weight of each wheel 20 and the wheel weight uneven distribution degree. Etc. are recorded in the recording device 27 together with the current traveling point data.

The data such as the wheel load recorded in the recording device 27 in this manner is used for the external P when the railway vehicle 10 is inspected.
It is read by C or the like, and compared with a maintenance reference value (different from the above-mentioned risk reference value) set in advance that there is a trolley abnormality or track abnormality related to derailment and maintenance is required.

At this time, for example, if the wheel weight of a certain bogie 16 deviates from the maintenance reference value, it is determined that there is a possibility that the bogie 16 or the wheel axle 11 is abnormal, and the details of the bogie 16 or the like are determined. Maintenance and inspection, parts replacement, etc. Also,
For example, when the wheel weights of the plurality of wheels 20 deviate from the maintenance reference value in the vicinity of a certain running point, it is considered that there is a possibility of a track abnormality, and detailed maintenance and replacement of the track 15 at the corresponding running point is required. To do.

Here, by using the fact that the wheel load etc. recorded in the recording device 27 exceeds the maintenance standard value as an index for maintenance inspection, the carriage 16 having an abnormality which may cause derailment 16
The existence of the railroad track 15 is easily recognized, the maintenance work can be efficiently performed, and the safety of vehicle operation is further improved.

As described above, according to the present embodiment, the pressure sensor 14 obtains the information about the internal pressure of the air spring 13, and the strain gauge 28 detects the information about the twist of the carriage 16 around the width direction. Thirteen
The relationship between the total value of the wheel weights of the wheels 20 on one side in the width direction of the carriage 16 and the total value of the wheel weights of the wheels 20 on the other side is acquired based on the information on the internal pressure of Thus, information about the distribution of the wheel loads of the individual wheels 20 on each side is obtained, and the wheel loads of the individual wheels 20 can be acquired.

Here, in the railway vehicle 10 according to the present embodiment, the wheel load of each wheel 20 acquired by the wheel load acquiring device 90 and the wheel load / lateral pressure measuring wheel shaft (a strain gauge is attached to the wheel. The wheel load was compared with that measured by the wheel axle.

Here, the railway vehicle 10 has a radius of curvature of about 20.
Approximately 5 km / h to approximately 20 km / h on a 0 m arc curve orbit
/ H, and the treads of the wheels 20 of the railway vehicle 10 are modified arc treads.

6 to 9 show four shaft springs 1 of the truck 16.
As in the case where 7 is just completed, the wheel load of the front bogie of the railroad vehicle 10 in a state in which all 4 are balanced is measured by the wheel load acquisition device 90 of the present embodiment, and the wheel axle for measuring wheel load and lateral pressure. 6 is a graph showing the wheel weight of the left wheel of the front wheel axle, FIG. 7 is a graph showing the wheel weight of the right wheel of the front wheel axle, and FIG. 8 is the left side of the rear wheel axle. 9 is a graph showing the wheel load of the wheel on the rear side, and FIG. 9 is a graph showing the wheel load of the right wheel on the rear wheel shaft. The dotted line in the figure is the wheel load by the wheel shaft for measuring lateral pressure / lateral pressure, and the solid line is the wheel load acquiring device 90. It is the weight.

As is clear from FIGS. 6 to 9, the wheel load measured by the wheel load acquisition device 90 and the wheel load measured by the wheel load / lateral pressure measuring wheel axle are good for any of the wheels 20. It is found that the wheel weights of the individual wheels 20 are accurately obtained by the simple method as in this embodiment.

Further, FIGS. 10 to 13 show a truck 16 for many years.
Assuming that the balance of the shaft spring 17 of the bogie 16 is out of balance due to use of the
Put a spacer of a predetermined thickness on the carriage 16 in advance.
Railroad vehicle 1 equipped with bogie 16 that has lost the balance of 45%
Fig. 10 shows the same measurement for the case of 0, Fig. 10 is a graph showing the wheel weight of the left wheel of the front wheel axle,
FIG. 11 is a graph showing the wheel weight of the right wheel of the front wheel axle, FIG.
2 is a graph showing the wheel weight of the left wheel of the rear wheel shaft, and FIG. 13 is a graph showing the wheel weight of the right wheel of the rear wheel shaft.

As is clear from FIGS. 10 to 13, even when the balance of the shaft spring 17 of the carriage 16 is lost due to aging or the like, the wheel load and wheel load by the wheel load obtaining device 90 are
It is almost the same as the wheel load by the lateral pressure measuring wheel shaft, and it has been confirmed that the wheel load can be acquired with high reliability according to the present embodiment.

The present invention is not limited to the mode described in the above embodiment, but various modified modes can be adopted according to other conditions. For example, in the above embodiment, the control device 18 and the mask controller 23 are separate devices, but the CPU of the mask controller 23 or the like may perform all the processes.

Further, in the above-described embodiment, one strain gauge 28 is attached to each carriage 16 in order to easily obtain the wheel weight of each wheel 20 at low cost. A plurality of strain gauges 28 may be attached in order to more accurately detect the strain and improve the distribution accuracy of the wheel load.

Further, in the above embodiment, the strain gauge 2 is used in order to accurately detect the twist of the carriage 16 around the width direction.
8 is attached to the end surface of the connecting beam 53 so as to be inclined at about 45 degrees with respect to a line parallel to the axis of the connecting beam 53, but it is a bogie frame 19 such as a main cross beam 52 or a side beam 51. It is only necessary to detect the distortion caused by the twist of the carriage 16 around the width direction, and the attachment angle is not limited as long as the displacement due to the twist is generated. Depending on the structure of the carriage 16 or the like, the twist in the other direction may be measured instead of the twist in the width direction of the carriage 16, and the wheel load may be distributed based on this.

In the above embodiment, the truck 16 is used.
Although the strain gauge 28 is used as the twist detecting means for detecting the twist in the width direction of the, the twist may be measured by using other means such as a laser displacement meter for measuring the strain.

Further, in the above embodiment, the bogie frame 19 having the connecting beam 53 is adopted, but the present invention can be applied to other bogie frames. For example, it may be a bogie frame or the like having no connecting beam 53, or may be a bogie frame or the like used for a bogie with a bolster instead of the bogie frame 19 used for the bolsterless bogie as in the present embodiment. The shape and structure of the bogie frame, including the bogie frame, are not limited at all. In this case, the strain gauge 28 may be attached on the surface of the bogie frame, for example, the cross beam, at a position where the twist of the bogie 16 can be detected with high accuracy. In order to detect the twist with higher accuracy and increase the wheel load distribution accuracy, A plurality of strain gauges 28 may be attached.

In the above embodiment, the method of installing the air spring 13 is not particularly limited. For example, the air spring 13 is placed on a box-shaped member or the like welded to the outer side surface of the side beam 51. Is also good.

In the above embodiment, the pressure sensor 14 is replaced by the air spring 13 in order to facilitate the attachment / detachment.
Although it is attached to the pipe 61 that connects the automatic height adjustment valve 62 with the automatic height adjustment valve 62, it may be attached to the air spring 13, the auxiliary air chamber 63, or the like, as long as the internal pressure in the air spring 13 can be measured. Good.

Further, in the above-described embodiment, the code corresponding to the traveling point output by the traveling point recognizing device 60 is recorded in the recording device 27 in association with the wheel weight or the like. Information that enables the point to be recognized may be recorded, and for example, time information when the wheel load is measured may be used.

Further, in the above embodiment, the wheel load obtaining device is applied to the leading car of the railway vehicle, but it may be applied to an intermediate car.

[0074]

As described above, according to the present invention,
The internal pressure acquisition means acquires information about the internal pressure of the air spring, and the twist detection means detects information about the twist around the width direction of the carriage. Based on the information about the internal pressure of the air spring, one of the width direction of the carriage is detected. A relationship between the total wheel weight of the wheels on one side and the total wheel weight of the wheels on the other side is obtained, and on the basis of the information on the torsion, it relates to the distribution of the wheel weights of the individual wheels on each side. Information is obtained and the wheel weight of each wheel can be acquired.

As a result, the weight of each wheel of the truck is
A device and method that can be easily acquired in real time at the time of running at any measurement point and any trolley, and at the time of stopping, a railway vehicle using the same, a railway vehicle maintenance method, and a track maintenance method And are provided.

[Brief description of drawings]

FIG. 1 is a front view of a railway vehicle equipped with a wheel load obtaining device according to the present embodiment.

FIG. 2 is a partial cross-sectional side view of the railway vehicle of FIG.

3 is a perspective view showing a bogie frame of the bogie in FIG. 1. FIG.

FIG. 4 is a block diagram of a railway vehicle including the wheel load obtaining device according to the present embodiment.

FIG. 5 is a flowchart showing a wheel load obtaining method according to the present embodiment.

FIG. 6 is a graph showing the wheel load of the left wheel of the front wheel axle in a railway vehicle having a balanced bogie.

FIG. 7 is a graph showing the wheel weight of the right wheel of the front wheel axle in a railway vehicle with a balanced bogie.

FIG. 8 is a graph showing a wheel load of a left wheel of a rear wheel axle in a railway vehicle including a balanced bogie.

FIG. 9 is a graph showing a wheel load of a right wheel of a rear wheel axle in a railway vehicle including a balanced bogie.

FIG. 10 is a graph showing a wheel load of a left wheel of a front wheel axle in a railway vehicle including an unbalanced bogie.

FIG. 11 is a graph showing the wheel weight of the right wheel of the front wheel axle in a railway vehicle equipped with an unbalanced bogie.

FIG. 12 is a graph showing a wheel load of a left wheel of a rear wheel axle in a railway vehicle including an unbalanced bogie.

FIG. 13 is a graph showing a wheel load of a right wheel of a rear wheel axle in a railway vehicle including an unbalanced bogie.

[Explanation of symbols]

10 ... Railway vehicle, 11 ... Wheel axle, 12 ... Car body, 13 ... Air spring, 14 ... Pressure sensor (internal pressure acquisition means), 15 ... Track, 16 ... Bogie, 19 ... Bogie frame, 20 ... Wheels, 23 ... Mascon (speed) Control means), 26 ... Warning device (warning means), 27 ... Recording device (recording means), 28 ... Strain gauge (twist detection means), 40 ... Wheel load acquisition / control device, 41
... wheel weight estimation means, 42 ... left and right separate wheel overlapped total value acquisition means (width direction separate wheel overlapped total value acquisition means), 43 ... ring overlapped total value distribution means, 45 ... alarm control means, 46 ... speed management means, 47 …
Recording control means, 51 ... Side beam, 52 ... Main lateral beam, 53 ... Connecting beam, 58 ... Horizontal beam, 60 ... Travel point recognition device (travel point recognition means), 90 ... Wheel load acquisition device.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yayoi Misu             2-2-2 Yoyogi, Shibuya-ku, Tokyo Tohnichi             Inside the passenger railway (72) Inventor Masahiro Ohno             3-1, Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Tokyu             Vehicle Manufacturing Co., Ltd. (72) Inventor Fumio Eguchi             3-1, Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Tokyu             Vehicle Manufacturing Co., Ltd.

Claims (13)

[Claims] 1. A bogie including a plurality of wheel shafts having wheels, which are spaced apart in the rolling direction of the wheel shafts with respect to a bogie frame, a vehicle body arranged on the bogie, and a bogie frame. In the wheel load acquisition device for acquiring the wheel load of the wheel in a railroad vehicle provided with a plurality of air springs arranged in the width direction of the bogie and supporting the vehicle body, the information on the internal pressure of the air spring is Internal pressure acquisition means for acquiring, twist detection means for detecting information about the twist of the carriage, wheel weight estimation means for acquiring wheel weight of the wheel based on information about the acquired internal pressure and information about the twist, A wheel load obtaining device, comprising: 2. The wheel weight estimating means, based on the information on the internal pressure, information on a total value of wheel weights of wheels on one side in the width direction of the truck and wheel weights of wheels on the other side in the width direction of the truck. Wheel-wise overlapped total value acquisition means for acquiring information about the total value of the wheel width, and based on the information about the twist, the wheel overlapped total value distribution for distributing the information about each of the total values to the individual wheels on each side. The wheel load obtaining apparatus according to claim 1, further comprising: 3. The twist detection means is a strain gauge attached to the bogie frame.
Alternatively, the wheel load obtaining device described in 2. 4. The bogie frame includes a pair of side beams that are spaced apart in a width direction of the bogie and extend in a front-rear direction of the bogie, and the strain gauge is attached to the side beams. The wheel load obtaining apparatus according to claim 3, wherein 5. The bogie frame includes a pair of side beams that are spaced apart in the width direction of the bogie and extend in the front-rear direction of the bogie, and a lateral beam that connects substantially central portions of the side beams to each other. The wheel load obtaining apparatus according to claim 3, wherein the strain gauge is attached to the horizontal beam. 6. The horizontal beams are a pair of main horizontal beams that are separated from each other in the front-rear direction of the carriage to connect the side beams to each other, and a pair of joints that are separated from each other in the width direction of the carriage to connect the main horizontal beams to each other. The wheel load obtaining apparatus according to claim 5, further comprising a beam, wherein the strain gauge is attached to the connecting beam. 7. A bogie including a plurality of wheel axles having wheels, which are spaced from each other in the rolling direction of the wheel axles with respect to the bogie frame, a vehicle body disposed on the bogie, and a bogie frame on the bogie frame. In the wheel load acquisition method for acquiring the wheel load of the wheel in a railcar including a plurality of air springs arranged in the width direction of the bogie and supporting the vehicle body, the information about the internal pressure of the air spring is An internal pressure acquisition step of acquiring, a twist detection step of detecting information about a twist of the carriage, a wheel weight estimation step of acquiring a wheel weight of the wheel based on the acquired information about the internal pressure and information about a twist, A method for obtaining wheel load, comprising: 8. A wheel load obtaining apparatus according to claim 1, alarm means for issuing an alarm to a crew member, and monitoring the acquired wheel load to determine a predetermined dangerous condition. An alarm control means for driving the alarm means, and a railway vehicle. 9. A wheel load obtaining apparatus according to claim 1, speed control means for controlling a vehicle speed, and a case where a predetermined dangerous state is determined by monitoring the obtained wheel load. And a speed management means for controlling the speed control means. 10. The wheel load acquiring apparatus according to claim 1, a recording unit capable of recording information, a recording control unit for recording the acquired wheel load in the recording unit, A railway vehicle comprising: 11. A driving point recognition means for recognizing a driving point is provided, and the recording control means records the wheel weight in the recording means in association with the driving point at which the wheel weight is acquired. The railway vehicle according to claim 10. 12. The maintenance method for a railway vehicle according to claim 10 or 11, wherein the wheel weight recorded in the recording means is used as an index for maintenance and inspection of the railway vehicle. Method. 13. The track maintenance method according to claim 11, wherein the wheel weight recorded in the recording means is used as an index for maintenance inspection of the track. Method.