JP2002331931A - Axle box supporter and load measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an axle box supporter easily lifting up a spring seat for liner adjustment. SOLUTION: This axle box supporter 1, constituted by having a spring seat 20 interposing a liner 25 movably fitted together on an axle box 12 turn supporting a wheel set 11 and arranging between this spring seat 20 and a bogie frame 13 (18) an axle spring 17 elastically supporting the bogie frame 18 relating to the axle box 12, is provided with a space 28, 29 for arranging between the axle box 12 and a spring seat 25 a lift means 30 lifting the spring seat 25 so as to be pushed up from downward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle box support device for a railway vehicle, and more particularly to an axle box support device for easily inserting and removing a liner for adjusting the height of an axle spring.

[0002]

2. Description of the Related Art In order to travel at high speed and safely, a railway vehicle must follow a track in accordance with a track condition. For this purpose, a wheel load, which is a force of a wheel pressing a rail, is balanced. Must be. In order to improve running stability, it is necessary to balance the wheel weight at the time of manufacture, since it is necessary to balance the wheel weight from the time of manufacture because the fluctuation rate is less for changes during running. This is an important issue. As a structure for adjusting such wheel load balance, there is an axle box support device provided on an axle box that supports a wheel axle at both ends. The axle box support device has a structure capable of adjusting a shaft spring load that determines a wheel load. Specifically, the liner can be taken in and out between the axle box body and the spring seat, but various structures have been conventionally proposed for taking the liner in and out. An example thereof is described in JP-A-6-329021.

FIG. 3 is a cross-sectional view showing an axle box support device described in this publication. The axle box support device 100 includes the axle box 1
An axial spring 103 is arranged between the frame 01 and the bogie frame 102 to provide buffering in the up-down direction. A spring seat 105 is fitted on the axle box 101, and a cylinder 107 having a fluid chamber 106 is formed between the axle box 101 and the spring seat 105. Therefore, an introduction hole 108 for introducing hydraulic oil into the fluid chamber 106 is formed in the axle box 101, and a connector 109 for connecting a hydraulic pump is provided at the opening. The axle box 10 constituting the cylinder 107
Oil leakage is prevented between the spring seat 1 and the spring seat 105 by a seal member such as an O-ring 110.

According to the axle box support device 100, the hydraulic oil is supplied from the hydraulic pump connected to the connector 109 to the fluid chamber 106 to drive the cylinder 107.
In the cylinder 107, the spring seat 105 is raised by hydraulic pressure, and pushes up the shaft spring 103 to move the spring seat 1 from the shaft box 101.
05 is separated. Therefore, the shaft box 101 and the spring seat 1
Between 05 and 05, a liner 111 having a predetermined thickness is taken in and out to obtain a predetermined axial spring load for balancing the wheel load. Thus, the shaft spring height is adjusted according to the height of the liner 111, and the wheel load balance is adjusted by changing the shaft spring load of each wheel.

[0005]

However, in the above-mentioned conventional axle box support device 100, the cylinder 107 is formed, and the O-ring 110 for preventing oil leakage is provided inside. Even if it has deteriorated, it cannot be confirmed from outside. Therefore, the O-ring 110
Is damaged, oil leakage occurs, and in some cases, the spring seat 105 cannot be lifted.
Further, in the axle box support device 100, it is necessary to provide a connector 109 in an introduction hole 108 for connecting a hydraulic pump to the axle box 101 in order to supply hydraulic oil from the outside. Since various devices such as a shaft temperature detector, shaft damper, and axle suspension bracket are installed,
There was a problem that it was difficult to secure that position.

On the other hand, besides the axle box support device having such a cylinder structure, there is also a structure in which a spring seat is lifted by screwing a bolt from above a bogie frame. However, such a shaft spring support device requires a space between the bogie frame and the vehicle body, and the pit line (a horizontal rail that is raised so that the vehicle can be operated from underneath) requires high work. It is hoped that it will be easier.

The wheel load is determined by the unsprung weight acting directly on the wheel axle, in addition to the shaft spring load in the axle box support device. It is desired that this wheel load balances the left and right wheels, one bogie, and the entire wheels of one vehicle. However, when trying to balance the wheel load with many wheels, the balance changes while adjusting the shaft spring load in order, and the overall balance may not be achieved at the liner height determined by the initial calculation. . In such a case, there were few establishments that had a weighing machine that could measure one car at a time, so the adjustment had to be made again and the work efficiency was very poor. This is because it is necessary to manage the error of the wheel load with a strict value in today's increasingly lightweight vehicles. Therefore, along with work efficiency,
Therefore, it is desired to be able to accurately calculate the axial spring load, that is, determine the liner height.

Accordingly, an object of the present invention is to provide an axle box support device which can easily lift a spring seat for adjusting a liner. Alternatively, it is another object of the present invention to provide a load measurement system that can easily perform a wheel load balance adjustment operation.

[0009]

The axle box support device of the present invention has a spring seat movably fitted with a liner interposed on an axle box for rotatably supporting a wheel axle. A shaft spring for elastically supporting the bogie frame with respect to the axle box is disposed between the frame and the frame. Lift means for lifting the spring seat so as to push up the spring seat from below is provided between the axle box and the spring seat. And a space is provided between them. Therefore, according to the axle box support device of the present invention, if a lifting means such as a hydraulic cylinder is arranged between the axle box and the spring seat, the spring seat for adjusting the liner can be easily lifted. .

Further, the shaft box supporting device of the present invention is characterized in that a shaft spring load sensor is sandwiched between the spring seat and the shaft box together with the liner. Therefore, according to the axle box support device of the present invention, since the axle spring load sensor is provided between the spring seat and the axle box, the axle spring load data of each axle box support device for balancing the wheel load is collectively collected. Can be obtained.

Further, the load measuring system of the present invention has a spring seat movably fitted with a liner interposed on an axle box for rotatably supporting a wheel axle, and between the spring seat and the bogie frame. An axle box support device provided with an axle spring that elastically supports the bogie frame with respect to an axle box; an axle spring load sensor sandwiched together with the liner between the spring seat and the axle box; A load measuring device for calculating a required liner height from the measurement result of the shaft spring load sensor. Therefore, according to the load measuring system of the present invention, the shaft spring load of each shaft box supporting device can be measured by the shaft spring load sensor, and the required liner height can be calculated from the result. Adjustment work can be easily performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an axle box support device and a load measuring system according to the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view showing one embodiment of an axle box support device. Axle box support device 1 of the present embodiment
The bogie frame 13 is connected via a shaft beam 14 to a shaft box 12 that holds both ends of a wheel shaft 11 rotatably by bearings. Shaft beam 1 connecting axle box 12 and bogie frame 13
Reference numeral 4 denotes a rubber with a pin at the connecting portion to absorb the movement of the axle box 12 in the front-rear direction with respect to the bogie frame 13 while allowing the vertical rotation of the axle box 12 and the slight swing of the left and right directions. A bush is interposed.

A spring seat 20 is disposed on the axle box 12,
The spring seat 20 is slidably fitted to the axle box 12 so as to be able to move up and down. An axial spring for absorbing the vertical movement of the axle box 12 relative to the bogie frame 13 and adjusting the load balance of the vehicle body is provided between the spring seat 20 and the spring receiver 18 of the bogie frame 13. 17 are interposed. Further, in order to absorb the movement of the axle box 12 with respect to the bogie frame 13 in each direction, the axle spring 17 has
A cylindrical laminated rubber 16 is housed in an inner cylinder 19 projecting downward from the spring receiver 18.

On the other hand, between the spring seat 20 and the shaft box 12,
A liner 25 for adjusting the spring height of the shaft spring 17 is sandwiched. In the present embodiment, in particular, the shaft spring load sensor 21 for measuring the shaft spring load by the shaft spring 17 is arranged. Therefore, the shaft spring load sensor 21 is inserted between the spring seat 20 and the shaft box 12. Is formed. The shaft spring load sensor 21 uses, for example, a load cell type sensor interposed in a rubber seat when a large gap can be obtained, and uses an antifreeze or oil inside the rubber seat when a large gap cannot be obtained. A pressure sensor that converts the load may be used. Many types of sensors are commercially available, such as a seismic type, a sensor type with a built-in amplifier, and a digital type.

In the axle box support device 1 of the present embodiment, the gap between the spring seat 20 and the axle box 12
The liner 25 is inserted over the first liner 1. When the liner 25 is taken in and out, the spring seat 2
Although it is necessary to raise 0, the present embodiment is configured such that lifting means such as the hydraulic cylinders 30 and 30 can be removed without providing lifting means in the axle box support device 1 itself. That is, in the present embodiment, the axle box 12
Spaces 28 and 29 are formed before and after the hydraulic cylinders 30 and 30 so that lift means such as hydraulic cylinders 30 and 30 can be arranged.
The spring seat 20 is extended in the front-rear direction so as to receive a load of 30 from below.

By providing the axle box support device 1 with the axle spring load sensor 21, a load measurement system for confirming wheel load balance can be configured. Therefore, in this embodiment, as shown in FIG.
.. And the load measuring device 4
0 is connected to the load measuring system. FIG. 2 is a conceptual diagram illustrating a load measuring device included in the load measuring system. The load measuring device 40 stores an input unit 42 for inputting measurement results from the plurality of shaft spring load sensors 21, a load calculation program for calculating shaft spring loads, data, and the like, centering on a CPU 41 for performing arithmetic processing. Storage means 43 and C for displaying the calculated liner height
It is constituted by output means 44 such as an RT. The load calculation program is based on the measurement results of the shaft spring load sensors 21, 21,... Provided in the axle box support devices 1, 1,. The height of the liner required in the axle box support devices 1, 1,... Can be calculated.

Subsequently, the adjustment of the wheel load balance by the load measurement system is performed by adjusting the liner 2 in the axle box support device 1.
This will be described together with the height adjustment work of No. 5. Where the wheel weight is
The force that the wheel presses against the rail, which is obtained by adding the unsprung weight that directly acts on the wheel set 11 to the axial spring load acting through the axle box 12. The axial spring load is the weight of each of the axle box support devices 1, 1... Of the weight of the vehicle body, the bogie frame, and the like.
7 can be adjusted by changing the spring height. The unsprung weight that directly acts on the wheel set 11 differs between the power bogie and the associated bogie, and also differs between the power bogie in the left-right and front-rear directions because the motor and the gear device are mounted unevenly. However, these unsprung weights can be easily corrected to known values by measuring them in advance.

In order to adjust the wheel load balance, first, the vehicle is pulled into the level line, set horizontally, and the shaft spring load sensor 2 of each of the axle box support devices 1, 1,...
, And the load measuring device 40 are connected. Therefore, the shaft spring support sensors 1, 1...
Is input to the input means 42, and the storage means 43
Is stored. On the other hand, the storage means 43 stores each wheel 1 in advance.
The unsprung weight data of 0, 10,... Is stored. Therefore, the CPU 41 adds the input shaft spring load and the unsprung weight to calculate the wheel weights of the wheels 10, 10,..., And checks the balance from the calculated wheel weight values.

In the load measuring device 40, each wheel 10, 10
.. Are determined to be within the allowable range. If the error exceeds the allowable range, the height of the liner 25 is required in each of the axle box support devices 1, 1,. Are displayed on the output means 44, respectively. The wheel load balance is, for example, the difference in balance within one vehicle (before, after,
Left / right and diagonal differences), and the height of the liner 25 required to achieve such a balance is calculated. Also,
Not only one car but also a difference in balance for one car and a difference in balance for one formation can be calculated.

The operator confirms the values displayed on the output means 44 in this manner, inserts and removes the liner 25 so as to match each value, adjusts the liners of the axle box support devices 1, 1,. An axial spring load based on the spring height is obtained. The liner adjustment is performed as shown in FIG.
The hydraulic cylinders 30, 30 are set in the spaces 28, 29. Set hydraulic cylinder 30, 30
Is mounted on the axle box 12 so that its cylinder rod abuts from under the spring seat 20. Then, when the hydraulic cylinders 30, 30 are driven, the spring seat 20 is pushed up from below, and the spring seat 20 contracts the shaft spring 17 and rises.
A gap is created on the shaft spring load sensor 21. And
Remove or add the liner 25 to the gap,
The height is adjusted to the height displayed on the output means 44.

After the liner adjustment of each of the axle box support devices 1, 1,..., The hydraulic cylinders 30, 30 are returned to lower the spring seat 20, and the axle box support devices 1
Remove 0,30. Then, the hydraulic cylinders 30, 30 are similarly set to the next axle box support device 1, and the spring seat 20 is lifted to adjust the liner. These operations are repeated at each location, and the wheel load balance of one vehicle or one vehicle is adjusted. By the way, while the liner adjustment is being performed, there is a case where a change occurs in the liner height to be balanced due to a change in each axial spring load. In this embodiment, even in such a case, the load measurement device 40 can immediately know the wheel load balance immediately after the adjustment. Therefore, a more accurate wheel load balance can be obtained by repeating the readjustment, and in this case, there is no need to measure the wheel load of each wheel again and calculate the liner height again from the shaft spring load. The readjustment operation can be easily performed.

In the axle box support device 1 of the present embodiment,
Since the hydraulic cylinders 30 and 30 can be easily installed without providing a lift means for lifting the spring seat 20 in the apparatus itself, when performing such an operation for balancing the wheel load, the spring seat 20 is required. This eliminates the need for lifting work, making it easier to adjust the liner in narrow or high places. Since the hydraulic cylinders 30, 30 are externally attached to the axle box support device 1, the failure of the hydraulic cylinders 30, 30 can be dealt with at an early stage. In addition, since no lifting means is provided in the axle box support device 1 itself, the hydraulic cylinder 30,
Even if 30 fails, it can be replaced, so there is no interruption due to repair, and the adjustment work can be continued.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and various changes can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the shaft box supporting device 1 of the shaft beam arm type has been described as an example, but the configurations of the shaft beam 14 and the shaft spring 17 are not limited thereto.
In the above-described embodiment, the hydraulic cylinder 30 is used as the lift means.
Although the description has been given with reference to FIG.

[0024]

According to the present invention, the lift means for lifting the spring seat so as to push it up from below is provided with a space for disposing the lift means between the axle box and the spring seat. You can push up your seat,
It has become possible to provide an axle box support device that can easily lift a spring seat for liner adjustment. The present invention also has a spring seat movably fitted with a liner interposed on an axle box that rotatably supports a wheel axle, and the bogie frame is provided between the spring seat and the bogie frame. A shaft box supporting device provided with a shaft spring elastically supporting the shaft spring load sensor, a shaft spring load sensor sandwiched together with the liner between the spring seat and the shaft box, and a measurement result of the shaft spring load sensor And a load measuring device for calculating a required liner height from the vehicle, it has become possible to provide a load measuring system capable of easily performing a work of adjusting the wheel load balance.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing an embodiment of an axle box support device according to the present invention.

FIG. 2 is a conceptual diagram showing a load measuring system.

FIG. 3 is a partial sectional view showing a conventional axle box support device.

[Explanation of symbols]

 Reference Signs List 1 axle box support device 10 wheel 11 wheel axle 12 axle box 13 bogie frame 17 axle spring 18 spring receiver 20 spring seat 22 axle spring load sensor 25 liner 30 hydraulic cylinder 40 load measurement device 41 CPU 42 input means 43 storage means 44 output means

Claims (3)

[Claims] 1. A spring seat, which is fitted on a shaft box for rotatably supporting a wheel axle so as to movably sandwich a liner,
An axle box supporting device comprising a shaft spring disposed between the spring seat and the bogie frame for elastically supporting the bogie frame with respect to the axle box, wherein lift means for lifting the spring seat so as to push up from below. And a space for arranging the lifting means between the axle box and the spring seat. 2. The axle box support device according to claim 1, wherein an axle spring load sensor is sandwiched between the spring seat and the axle box together with the liner. apparatus. 3. A spring seat, which is fitted on a shaft box for rotatably supporting a wheel axle so as to sandwich a liner so as to be movable,
An axle box support device comprising an axle spring that elastically supports the axle frame with respect to the axle box between the spring seat and the axle frame; and the liner between the spring seat and the axle box. A load measuring system comprising: a shaft spring load sensor interposed; and a load measuring device that calculates a required liner height from a measurement result of the shaft spring load sensor.