CN110450820A - It is a kind of based on one be vertical damper pressure derailing detection method and system - Google Patents
It is a kind of based on one be vertical damper pressure derailing detection method and system Download PDFInfo
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- CN110450820A CN110450820A CN201910752367.1A CN201910752367A CN110450820A CN 110450820 A CN110450820 A CN 110450820A CN 201910752367 A CN201910752367 A CN 201910752367A CN 110450820 A CN110450820 A CN 110450820A
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- pressure
- vertical damper
- derailing
- test result
- output test
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
Abstract
The invention discloses it is a kind of based on one be vertical damper pressure derailing detection method and system, wherein being the derailing detection method of vertical damper pressure comprising steps of it is the pressure sensor monitoring pressure on vertical damper that A., which is mounted on one, based on one；B. judge the pressure value size that pressure sensor monitoring arrives, if pressure value fluctuates in the section of setting, go to step C1；If pressure value zero occurs and occurring in the t time after zero being more than given threshold, go to step C2；C1. output test result is not derail；C2. output test result is derailing；In the step C1 and step C2, output test result is delivered to train control system.The present invention is safe and effective, easy to use.
Description
Technical field
The present invention relates to derailing detection technique field, in particular to it is a kind of based on one be vertical damper pressure derailing inspection
Survey method and system.
Background technique
With deepening constantly for Chinese Urbanization, urban track traffic industry is also evolving progress.It comes into being
One hot spot is that municipal rail train is unmanned.For the protection comprehensive to passenger survival, crewless train be must be equipped with
Derailing detection method, and detection technique of derailing is currently emphasis, the difficult point faced.
At home, derailing detection method is at the early-stage, occurs more derailing detection manufacturers, scheme Datong District successively on the market
Small difference.Two kinds are broadly divided into, first is that contactless scheme: scheme existing for eddy current detection track, another kind are contact sides
Case: the scheme of monitoring deformation after rail is pounded based on bogie.Two schemes, it is each advantageous, but also all in the presence of the limitation of oneself.
In order to infuse new blood to derailing detection field, diversified selection is provided to owner, explores new derailing inspection
Implementation is surveyed, pushes the technology of derailing detection field constantly to advance and is of great significance.
Summary of the invention
It is an object of the present invention to provide a kind of base to explore a kind of completely new derailing detection mode used for rail vehicle
It is the derailing detection method and system of vertical damper pressure in one.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
It is a kind of based on one be vertical damper pressure derailing detection method, its main feature is that the following steps are included:
It is the pressure sensor monitoring pressure on vertical damper that step A., which is mounted on one,；
Step B. judges the pressure value size that pressure sensor monitoring arrives, if pressure value fluctuates in the section of setting,
Go to step C1；If pressure value zero occurs and occurring in the t time after zero being more than given threshold, step is jumped to
Rapid C2；
Step C1. output test result is not derail；
Step C2. output test result is derailing.
As a preferred method, in the step C1 and step C2, output test result is delivered to train control system.
Based on the same inventive concept, the present invention also provides it is a kind of based on one be vertical damper pressure derailing detection
System, its main feature is that including:
Being mounted on one is the pressure sensor on vertical damper: being the pressure that vertical damper is subject to for monitoring one；
Judging unit: the pressure value size arrived for judging pressure sensor monitoring；
Output unit: for when pressure value fluctuates in the section of setting, output test result to be not derail；Work as pressure
There is zero and when occurring in the t time after zero is more than given threshold in value, and output test result is derailing.
The output unit is electrically connected with train control system as a preferred method, and output unit detects output
As a result it is delivered to train control system.
The present invention is that the pressure sensor in vertical damper identifies derailing signal by being mounted on one.Work as vehicle
When normal operation, one is that vertical damper pressure can be fluctuated in a comparatively stable section；When derailing occurs
When, bogie, which falls down rail, to be pounded to the ground, and one is the zero load condition that vertical damper has a short time, is pounded with rear wheel
To the ground due to the initial velocity that vehicle weight and freely falling body are formed, one is that vertical damper will receive biggish abnormal impact,
Pressure rises violently.Derailing signal is identified by the changing rule that monitoring one is vertical damper pressure, and triggers derailing report
Alert signal.The present invention is safe and effective, easy to use.
Detailed description of the invention
Fig. 1 is that bogie and one is vertical damper location diagram.
Fig. 2 is pressure sensor schematic view of the mounting position in the present invention.
It is vertical damper rated characteristic curve graph that Fig. 3, which is one,.
It is damping force curve graph when vertical damper operates normally that Fig. 4, which is one,.
One is vertical damper damping force curve graph when Fig. 5 is normally runs to derailing.
Wherein, 1 is bogie, and 2 for one be vertical damper, and 3 be pressure sensor, and 4 be connecting cable.
Specific embodiment
In the present invention, it is whether the pressure detecting bogie 1 of vertical damper 2 and vehicle derail by monitoring one.
As shown in Figure 1, one is that vertical damper 2 is installed between 1 framework of wheel axle box and bogie, directly bear to come from
Wheel bring impact vibration.If vehicle operate normally, the vibratory impulse that wheel is subject to mainly from the relationship with rail, and
Track condition is known conditions, therefore while operating normally one is that 2 pressure of vertical damper can be in a comparatively stable area
It is interior to be fluctuated.When vehicle derailing, bogie 1, which falls down rail, to be pounded to the ground, and one is that vertical damper 2 has one in short-term
Between zero load condition, the initial velocity formed to the ground due to vehicle weight and freely falling body is pounded with rear wheel, one is vertical subtract
Vibration device 2 will receive biggish abnormal impact and pressure rises violently.System believes derailing by monitoring the changing rule of the pressure process
It number is identified, and triggers derailing alarm signal.
3 installation site of pressure sensor is as shown in Figure 2.
It is vertical damper characterisitic parameter table that table 1, which is one,.
Table 1 is vertical damper characterisitic parameter table
According to one be vertical damper 2 characterisitic parameter draw characteristic curve it is as shown in Figure 3.As it can be seen that train operates normally
When one be vertical damper 2 operating rate V0Section is 0.1m/s-0.2m/s, knows damping force F according to characteristic curve0Meeting exists
The section 0.35-1.05kN, and the random fluctuation in this section, as shown in Figure 4.
It is that the principle of vertical damper 2 may know that damping force F is provided by the oil pressure in internal hydraulic pressure cylinder by one, and it is interior
Portion oil pressure P is directly proportional:
F=P* Δ s
Wherein Δ s is internal oil cylinder piston effective area, to be the relevant constant of vertical damper 2 to one.
Therefore one is that 2 internal pressure of vertical damper can refer to vibration damping force curve.
When derail occur when, wheel falls off to from rail level, and for this hour wheel to hanging, one is that vertical damper 2 loses load, inside
Oil pressure is presented decline or tends to the trend mitigated；When wheel is to pounding to ground, due to the kinetic energy of gravity and itself, pound
It will be that vertical damper 2 causes biggish abnormal impact to one when to ground.One is that the operating rate of vertical damper 2 at this time will
As many as several times when reaching normal operation:
V1=nV0
According to different movement operating conditions, n is different；The operating condition that initial velocity is zero when now to vehicle derailing is analyzed, and is fallen
During due to gravity generate certain speed V1, wheel pounds the moment to ground, and 1 framework of bogie is remained unchanged due to inertia
Keep V1Speed movement, one be the movement velocity of vertical damper 2 is then the movement velocity of the opposite wheel pair of framework, herein about V1。
From momentum law:
H is rail level to the distance on ground, takes the high 176mm of 60 rail herein；Obtain V1=1.88m/s.
It is corresponding damping force F known to vertical damper characteristic curve from one1=6.58kN describes de- according to above-mentioned data
Damper damping force curve is as shown in Figure 5 when rail.
It from the above analysis, one is that vertical damper 2 shows apparent feature when derailing.The present invention is by right
One is that the pressure of vertical damper 2 is monitored and identifies derailing signal.
It is that detection method includes the following steps for the derailing of vertical damper pressure the present invention is based on one:
It is that the pressure sensor 3 on vertical damper 2 monitors pressure that step A., which is mounted on one,；
Step B. judges the pressure value size that pressure sensor 3 monitors, if pressure value fluctuates in the section of setting,
Go to step C1；If pressure value zero occurs and occurring in the t time after zero being more than given threshold, step is jumped to
Rapid C2；
Step C1. output test result is not derail；
Step C2. output test result is derailing.
In the step C1 and step C2, output test result is delivered to train control system.
It is that the derailing detection system of vertical damper pressure includes: the present invention is based on one
Being mounted on one is the pressure sensor 3 on vertical damper 2: being the pressure that vertical damper 2 is subject to for monitoring one
Power；
Judging unit: the pressure value size monitored for judging pressure sensor 3；
Output unit: for when pressure value fluctuates in the section of setting, output test result to be not derail；Work as pressure
There is zero and when occurring in the t time after zero is more than given threshold in value, and output test result is derailing.
The output unit is electrically connected with train control system, and output test result is delivered to Train Control by output unit
System.Train control system is not shown in the accompanying drawings, but has no effect on those skilled in the art's the understanding of the present invention and reality
It is existing.
To sum up, the invention has the characteristics that:
(1) when train operates normally, wheel rail relation is relatively stable, and one is that the load of vertical damper 2 is also relatively stable, pressure
Power smoothly fluctuation relatively, system in a stable section keep normal detection.
(2) when train derails, bogie 1 falls down rail, and one is the zero load that vertical damper 2 has a short time
State.It is pounded to the ground with rear wheel, due to the initial velocity that vehicle freely falling body is formed, one to be that vertical damper 2 will receive larger
Abnormal impact, pressure rises violently.System identifies derailing signal by monitoring the changing rule of the pressure process, and triggers
Derailing alarm signal.Alarm signal is sent to train control system by connecting cable 4, and vehicle will take related emergency measure,
Ensure traffic safety.
(3) present invention can be used as independent derailing detection system and be installed on automatic driving vehicle, can also be with other shapes
Formula derailing detection method cooperates to form complementation.
It (4) also can be that the state of vertical damper 2 carries out to one by analyzing the pressure data that acquires of the present invention
Diagnosis.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than limitation, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, within these are all belonged to the scope of protection of the present invention.
Claims (4)
1. it is a kind of based on one be vertical damper pressure derailing detection method, which comprises the following steps:
It is pressure sensor (3) the monitoring pressure on vertical damper (2) that step A., which is mounted on one,；
The pressure value size that step B. judges that pressure sensor (3) monitors is jumped if pressure value fluctuates in the section of setting
Go to step C1；If pressure value zero occurs and occurring in the t time after zero being more than given threshold, go to step
C2；
Step C1. output test result is not derail；
Step C2. output test result is derailing.
2. as described in claim 1 based on one be vertical damper pressure derailing detection method, which is characterized in that the step
In rapid C1 and step C2, output test result is delivered to train control system.
3. it is a kind of based on one be vertical damper pressure derailing detection system characterized by comprising
Being mounted on one is the pressure sensor (3) on vertical damper (2): being that vertical damper (2) is subject to for monitoring one
Pressure；
Judging unit: the pressure value size monitored for judging pressure sensor (3)；
Output unit: for when pressure value fluctuates in the section of setting, output test result to be not derail；When pressure value goes out
Existing zero and when occurring in the t time after zero is more than given threshold, output test result is derailing.
4. as claimed in claim 3 based on one be vertical damper pressure derailing detection system, which is characterized in that it is described defeated
Unit is electrically connected with train control system out, and output test result is delivered to train control system by output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752367.1A CN110450820B (en) | 2019-08-15 | 2019-08-15 | Derailment detection method and system based on pressure of primary vertical shock absorber |
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|---|---|---|---|
| CN201910752367.1A CN110450820B (en) | 2019-08-15 | 2019-08-15 | Derailment detection method and system based on pressure of primary vertical shock absorber |
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| CN110450820A true CN110450820A (en) | 2019-11-15 |
| CN110450820B CN110450820B (en) | 2021-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113733927A (en) * | 2021-09-01 | 2021-12-03 | 中车株洲电力机车有限公司 | Magnetic-levitation train, levitation control system and protection method for dropping and rail smashing of magnetic-levitation train |
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| US6322121B1 (en) * | 2000-08-25 | 2001-11-27 | Charles L. French | Wheel assembly with a derail guard for rail |
| JP2011227012A (en) * | 2010-04-23 | 2011-11-10 | Hitachi-Ge Nuclear Energy Ltd | Truck, fuel replacing machine, truck reinforcing construction method |
| CN202413831U (en) * | 2011-12-23 | 2012-09-05 | 济南轨道交通装备有限责任公司 | High-speed rail wagon bogie |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733927A (en) * | 2021-09-01 | 2021-12-03 | 中车株洲电力机车有限公司 | Magnetic-levitation train, levitation control system and protection method for dropping and rail smashing of magnetic-levitation train |
| CN113733927B (en) * | 2021-09-01 | 2023-04-07 | 中车株洲电力机车有限公司 | Magnetic-levitation train, levitation control system and protection method for dropping and rail smashing of magnetic-levitation train |
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| CN110450820B (en) | 2021-08-17 |
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