CN109520670A - A kind of railroad car centroid position measurement method and system - Google Patents
A kind of railroad car centroid position measurement method and system Download PDFInfo
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- CN109520670A CN109520670A CN201811625884.4A CN201811625884A CN109520670A CN 109520670 A CN109520670 A CN 109520670A CN 201811625884 A CN201811625884 A CN 201811625884A CN 109520670 A CN109520670 A CN 109520670A
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- air spring
- centroid position
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/12—Static balancing; Determining position of centre of gravity
- G01M1/122—Determining position of centre of gravity
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Abstract
The invention discloses a kind of railroad car centroid position measurement method and systems, this method is by measuring the inclination angle of the air pressure and measurement car bottom of forecarriage and four air springs on trailing bogie with respect to the horizontal plane, and the center of forecarriage and trailing bogie is combined to calculate compartment away from the horizontal spacing for the air spring being arranged on, forecarriage or trailing bogie and load the centroid position after cargo.Therefore, the present invention can be realized the composite measurement of cross-car, longitudinal direction and short transverse upper body centroid position, convenient for assessing the operational safety of vehicle comprehensively and accurately.
Description
Technical field
The present invention relates to safety of railway traffic technical fields, in particular to a kind of railroad car centroid position measurement side
Method and system.
Background technique
Safety of railway traffic is the most important thing of field of track traffic, with the goods train speed of service and launch weight
Increase substantially, the operational safety of goods train becomes focus concerned by people.Goods train has the discrete distribution of load
The characteristics of, due to loading the difference of cargo and placement position, there are certain offsets with theoretical value for the centroid position of car body
(mainly including center of gravity of goods transversal displacement, center of gravity of goods vertical misalignment amount, body gravity height), and car body centroid offset pair
Vehicle driving has safely important influence, therefore has important meaning in Safety Operation of Freight Cars assessment to the measurement of vehicle centroid
Justice.
Measurement of the existing train measurement mainly to vehicle height of C.G., and only with vehicle height of C.G. cannot comprehensively and
Accurate assessment vehicle safety in operation.
Summary of the invention
It is an object of the invention to: propose a kind of pair of cross-car, longitudinal and short transverse composite measurement car body
The method and system of centroid position, in order to comprehensive and accurate assessment vehicle safety in operation.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of railroad car centroid position measurement method comprising following steps:
S1: the first air spring and the second air spring and be mounted on trailing bogie that measurement is mounted on forecarriage
On third air spring and the 4th air spring air pressure, and measurement car bottom inclination angle with respect to the horizontal plane；Wherein,
First air spring and the third air spring are located on the right side of compartment, second air spring and the 4th air
Spring is located on the left of compartment；
S2: according to air pressure-load relation of each air spring, its load born is determined；And utilize each air bullet
The inclination angle of the load and car bottom that spring is born with respect to the horizontal plane calculates the compartment and loads the centroid position after cargo.
Further, the step of calculating the centroid position after compartment loads cargo:
S201: the mass center offset on the direction x, y and position in a z-direction respectively are calculated；
Wherein, the offset of mass center in the x direction are as follows:
The offset of mass center in y-direction are as follows:
The position of mass center in a z-direction are as follows:
Wherein, L is the center of forecarriage and trailing bogie away from b is the air being arranged on forecarriage or trailing bogie
The half of the spacing of spring, θ are the inclination angle of car bottom and horizontal plane, F1,F2,F3,F4When respectively θ=0, first is empty
Load on gas spring, the second air spring, third air spring and the 4th air spring, F1',F3',F2',F4' respectively θ >
Load when 0, on the first air spring, the second air spring, third air spring and the 4th air spring；
S201: using the mass center offset on the direction x, y and position in a z-direction respectively, and combine compartment without
Centroid position when loading object calculates compartment and loads the centroid position after cargo.
According to a kind of specific embodiment, in railroad car centroid position measurement method of the invention, by setting
Set the pressure sensor in air spring, the air pressure of Mersure Controler sensor；And by the way that inclining for car bottom is arranged in
Angle transducer, the inclination angle of measurement car bottom with respect to the horizontal plane.
The present invention also provides a kind of railroad car centroid position measuring systems comprising data processing terminal and data
Acquisition device；Wherein,
Pressure sensor of the data acquisition device in each air spring of capture setting car bottom is detected
Barometric information and be mounted on the obliquity sensor inclination data detected of car bottom, and its collected data is transmitted
To the data processing terminal；
The data processing equipment determines its load born for air pressure-load relation according to each air spring
Lotus；And the inclination angle using the load and car bottom of each air spring receiving with respect to the horizontal plane, calculate compartment loading
Centroid position after cargo.
Compared with prior art, beneficial effects of the present invention: railroad car centroid position measurement method of the invention,
With respect to the horizontal plane by the air pressure of four air springs on measurement forecarriage and trailing bogie and measurement car bottom
Inclination angle, and combine the center of forecarriage and trailing bogie away from the air spring being arranged on, forecarriage or trailing bogie
Horizontal spacing calculates compartment and loads the centroid position after cargo.Therefore, the present invention can be realized cross-car, it is longitudinal and
The composite measurement of short transverse upper body centroid position, convenient for assessing the operational safety of vehicle comprehensively and accurately.
Detailed description of the invention:
Fig. 1 is the scheme of installation of pressure sensor and obliquity sensor on carbody；
Fig. 2 is the stress relation schematic diagram of car body in the x direction；
Fig. 3 is the stress relation schematic diagram of car body in y-direction；
Fig. 4 is the stress relation schematic diagram of car body in a z-direction；
Fig. 5 is the structural schematic diagram of railroad car centroid position measuring system of the present invention.
Description of symbols:
1- car body, the first air spring of 101-, the second air spring of 102-, 103- third air spring, 104- the 4th are empty
Gas spring, 105- obliquity sensor.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
As shown in Figure 1, the first air spring 101 and the second air spring 102 on the forecarriage of carbody 1 with
And the inside of the third air spring 103 and the 4th air spring 104 on the trailing bogie of carbody 1 installs one respectively
Pressure sensor measures the first air spring 101, the second air spring 102, third air spring by pressure sensor respectively
103 and the 4th air spring 104 air pressure.Meanwhile one obliquity sensor 105 is set in the car bottom in carbody 1,
The inclination angle of car bottom with respect to the horizontal plane is measured by obliquity sensor 105.Pressure sensor in the present invention is air pressure pressure
Force snesor, obliquity sensor use three axial rake sensors.
On the basis of the sensor mounting structure, railroad car centroid position measurement method of the present invention, packet
Include following steps:
S1: the barometric information of four pressure sensors acquired respectively is obtained, and compartment is detected by obliquity sensor
The inclination angle theta of bottom with respect to the horizontal plane.
S2: according to the first air spring 101, the second air spring 102, third air spring 103 and the 4th air spring
104 air pressure-load relation determines the load respectively born.And utilize the load and car bottom of each air spring receiving
Inclination angle with respect to the horizontal plane calculates the compartment and loads the centroid position after cargo.
Specifically, inclination angle theta=0 in car bottom with respect to the horizontal plane, obtains the first air spring, the second air bullet
Load F on spring, third air spring and the 4th air spring1,F2,F3,F4, in the inclination angle theta of car bottom with respect to the horizontal plane
> 0, obtain the load F on the first air spring, the second air spring, third air spring and the 4th air spring1',F3',
F2',F4'。
Stress relationship as shown in Figure 2, using the center of forecarriage and trailing bogie away from calculating mass center in the direction x
On offset, i.e. the offset of mass center in the x direction are as follows:
Stress relationship as shown in Figure 3 is calculated using the spacing for the air spring being arranged on forecarriage or trailing bogie
The offset of the offset of mass center in y-direction out, i.e. mass center in y-direction are as follows:
Stress relationship as shown in Figure 4 utilizes inclination angle, forecarriage or the trailing bogie of car bottom with respect to the horizontal plane
The spacing of the air spring of upper setting calculates the position of mass center in a z-direction, the i.e. position of mass center in a z-direction are as follows:
Wherein, L is the center of forecarriage and trailing bogie away from b is the air being arranged on forecarriage or trailing bogie
The half of the spacing of spring.
Then, offset of the calculated mass center respectively on the direction x, y and position in a z-direction are recycled, and is tied
Centroid position when compartment unloaded cargo is closed, compartment is calculated and loads the centroid position after cargo.
As shown in figure 5, railroad car centroid position measuring system of the invention includes data processing terminal and data
Acquisition device；Wherein,
Data acquisition device is used to acquire the pressure sensor in the setting each air spring of car bottom as shown in Figure 1
Barometric information detected and the obliquity sensor for being mounted on car bottom inclination data detected, and by its collected number
According to being transferred to data processing terminal.
Data processing equipment determines its load born for air pressure-load relation according to each air spring；And
Load and the car bottom inclination angle with respect to the horizontal plane born using each air spring are calculated after the compartment loads cargo
Centroid position.
Specifically, data processing equipment is a computer or the computer system that multiple stage computers are constituted, or have
The data processing equipment of processor chip.I.e. data processing terminal has one or more processors and storage device, and
And the storage device stores one or more programs, when the one or more program is executed by one or more processors, so that
One or more processors realize railroad car centroid position measurement method of the invention, are acquired using data acquisition device
Data calculate compartment load cargo after centroid position.
Claims (4)
1. a kind of railroad car centroid position measurement method, which comprises the following steps:
S1: the first air spring and the second air spring and be mounted on trailing bogie that measurement is mounted on forecarriage
The air pressure of third air spring and the 4th air spring, and the inclination angle of measurement car bottom with respect to the horizontal plane；Wherein, described
First air spring and the third air spring are located on the right side of compartment, second air spring and the 4th air spring
On the left of compartment；
S2: according to air pressure-load relation of each air spring, its load born is determined；And it is held using each air spring
The inclination angle of the load and car bottom received with respect to the horizontal plane calculates the compartment and loads the centroid position after cargo.
2. railroad car centroid position measurement method as described in claim 1, which is characterized in that calculate compartment loading
The step of centroid position after cargo:
S201: the mass center offset on the direction x, y and position in a z-direction respectively are calculated；
Wherein, the offset of mass center in the x direction are as follows:
The offset of mass center in y-direction are as follows:
The position of mass center in a z-direction are as follows:
Wherein, L is the center of forecarriage and trailing bogie away from b is the air spring being arranged on forecarriage or trailing bogie
Spacing half, θ be car bottom and horizontal plane inclination angle, F1,F2,F3,F4When respectively θ=0, the first air bullet
Load on spring, the second air spring, third air spring and the 4th air spring, F1',F3',F2',F4' be respectively θ > 0 when,
Load on first air spring, the second air spring, third air spring and the 4th air spring；
S201: using the mass center offset on the direction x, y and position in a z-direction respectively, and combine compartment without loading
Centroid position when object calculates compartment and loads the centroid position after cargo.
3. railroad car centroid position measurement method as described in claim 1, which is characterized in that by being arranged in air
Pressure sensor in spring, the air pressure of Mersure Controler sensor；And the obliquity sensor by the way that car bottom is arranged in,
Measure the inclination angle of car bottom with respect to the horizontal plane.
4. a kind of railroad car centroid position measuring system, which is characterized in that acquired including data processing terminal and data
Device；Wherein,
The data acquisition device is for the pressure sensor gas detected in each air spring of capture setting car bottom
It presses data and is mounted on the obliquity sensor inclination data detected of car bottom, and its collected data is transferred to institute
State data processing terminal；
The data processing equipment determines its load born for air pressure-load relation according to each air spring；And
Load and the car bottom inclination angle with respect to the horizontal plane born using each air spring are calculated after the compartment loads cargo
Centroid position.
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| CN201811625884.4A CN109520670A (en) | 2018-12-28 | 2018-12-28 | A kind of railroad car centroid position measurement method and system |
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| CN201811625884.4A CN109520670A (en) | 2018-12-28 | 2018-12-28 | A kind of railroad car centroid position measurement method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829795A (en) * | 2021-02-07 | 2021-05-25 | 中车长春轨道客车股份有限公司 | Bogie instability detection method and system |
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Cited By (1)
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|---|---|---|---|---|
| CN112829795A (en) * | 2021-02-07 | 2021-05-25 | 中车长春轨道客车股份有限公司 | Bogie instability detection method and system |
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