CN110103722A - A kind of medium-and low-speed maglev vehicle mechanical braking method and system - Google Patents
A kind of medium-and low-speed maglev vehicle mechanical braking method and system Download PDFInfo
- Publication number
- CN110103722A CN110103722A CN201910424366.4A CN201910424366A CN110103722A CN 110103722 A CN110103722 A CN 110103722A CN 201910424366 A CN201910424366 A CN 201910424366A CN 110103722 A CN110103722 A CN 110103722A
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- Prior art keywords
- vehicle
- braking
- rail
- friction
- speed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
- B60L13/06—Means to sense or control vehicle position or attitude with respect to railway
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of medium-and low-speed maglev vehicle mechanical braking method and systems, and wherein mechanical braking method includes: step A, when vehicle issues brake signal, judge whether electric braking is effective, in the case where electric braking is invalid, start mechanical braking；Step B, brake force needed for calculating vehicle；Step C, adjusts vehicle suspension power, and execution falls vehicle；Step D, CONTACT WITH FRICTION between vertical sled and F rail carry out friction catch；Step E, judges whether car speed meets current brake demand, when car speed is unsatisfactory for current brake demand, continues to adjust vehicle suspension power.The present invention realizes braking strategy by existing electromagnetic suspension, vertical sled, it is better than hydraulic braking or gas-liquid switching brake to brake stationary performance, effectively avoid maintenance issues brought by outside paint, brake block and F rail outer wear in F rail, it realizes simple, maintenance is convenient, economic cost is low, can effectively improve vehicle braking performances index, has good future in engineering applications.
Description
Technical field
The present invention is more particularly directed to a kind of medium-and low-speed maglev vehicle mechanical braking method and systems.
Background technique
Currently, the mechanical braking of medium-and low-speed maglev vehicle generally uses hydraulic braking or gas-liquid switching brake, institute both at home and abroad
There is mechanical braking to be substantially and realization is contacted with F rail outer surface by brake clamp, therefore outside paint rubs to braking in F rail
It is very big to wipe secondary influence, it is inconsistent that shadow plays braking distance, even cause sometimes active braking distance be more than theoretical maximum braking away from
From value.But the interior outside paint of F rail is again critically important therefore conflicting to the protection of F rail.
System is resulted in due to vehicle and Orbit Matching feature using hydraulic braking or the brake clamp of gas-liquid switching brake
Dynamic clamp and F rail contact area are small, and heat dissipation and wear hardness are also not highly desirable.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, provide a kind of medium-and low-speed maglev vehicle mechanical system
Dynamic method and system realize that braking strategy, braking stationary performance compare hydraulic braking by existing electromagnetic suspension, vertical sled
Or gas-liquid switching brake is good, effectively avoids maintenance issues brought by outside paint, brake block and F rail outer wear in F rail,
Realize that simply, maintenance is convenient, and economic cost is low, can effectively improve vehicle braking performances index, before there is good engineer application
Scape.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of medium-and low-speed maglev vehicle mechanical braking method, comprising:
Step A judges whether electric braking is effective, in the case where electric braking is invalid, opens when vehicle issues brake signal
Dynamic mechanical braking；
Its main feature is that further comprising the steps of:
Step B, brake force needed for calculating vehicle；
Step C, according between coefficient of friction, theoretical car weight, current vehicle speed and the suspending power between vertical sled and F rail
Relationship, adjusts vehicle suspension power, and execution falls vehicle；
Step D, CONTACT WITH FRICTION between vertical sled and F rail carry out friction catch；
Step E, interpretation car speed meet current brake demand, when car speed is unsatisfactory for current brake demand, after
It is continuous to adjust vehicle suspension power.
As a preferred method, in the step B, braked needed for calculating vehicle according to braking level and load information
Power.
Further, before step A further include:
Step A1 is equipped with a steel plate on the planing surface surface of F rail；
In the step C, according to coefficient of friction, theoretical car weight, current vehicle speed and the suspension between vertical sled and steel plate
Relationship between power, adjusts vehicle suspension power, and execution falls vehicle；
In the step D, CONTACT WITH FRICTION between vertical sled and steel plate carries out friction catch.
The steel plate is detachably connected with F rail as a preferred method,.
When needing to safeguard, steel plate is removed replacement.Convenient for braking, rescuing the maintenance of support wheel orbit plane.
Based on the same inventive concept, the present invention also provides a kind of medium-and low-speed maglev vehicle mechanical braking systems, comprising:
Start unit: for judging whether electric braking is effective, in the invalid feelings of electric braking when vehicle issues brake signal
Under condition, start mechanical braking；
Its main feature is that further include:
Braking force calculation unit: for calculating brake force needed for vehicle；
Fall vehicle execution unit: for according between vertical sled and F rail coefficient of friction, theoretical car weight, current vehicle speed and
Relationship between suspending power, adjusts vehicle suspension power, and execution falls vehicle；
Vertical sled: for falling CONTACT WITH FRICTION between Che Shiyu F rail, friction catch is realized；
Judging unit: it for judging whether car speed meets current brake demand, is unsatisfactory for currently making in car speed
When dynamic demand, continue to adjust vehicle suspension power.
As a preferred method, in the braking force calculation unit, vehicle is calculated according to braking level and load information
Required brake force.
It further, further include the steel plate for being set to F rail planing surface surface；
It is described to fall in vehicle execution unit, according to coefficient of friction, the theoretical car weight, current vehicle speed between vertical sled and steel plate
Relationship between suspending power, adjusts vehicle suspension power, and execution falls vehicle；
The vertical sled is used to fall CONTACT WITH FRICTION between Che Shiyu steel plate, realizes friction catch.
The steel plate is detachably connected with F rail as a preferred method,.
Detachably it is connected between the steel plate and F rail by bolt as a preferred method,.
Compared with prior art, the present invention realizes braking strategy by existing electromagnetic suspension, vertical sled, and braking is flat
Stability can be better than hydraulic braking or gas-liquid switching brake, effectively avoids outside paint, brake block and F rail outer wear in F rail
Brought maintenance issues realize that simply, maintenance is convenient, and economic cost is low, can effectively improve vehicle braking performances index, have
Good future in engineering applications.
Detailed description of the invention
Fig. 1 is medium-and low-speed maglev vehicle mechanical braking method flow chart of the present invention.
Fig. 2 is F rail structural schematic diagram in the present invention.
Wherein, 1 is steel plate, and 2 be F rail.
Specific embodiment
Fig. 1 is medium-and low-speed maglev vehicle mechanical braking method course diagram of the present invention, and braking executes the period as 100ms, is passed through
After 100ms, braking instruction, detailed process are detected again are as follows:
Step A1 is equipped with a steel plate 1 on the planing surface surface of F rail 2；The steel plate 1 is detachably connected with F rail 2.
Step A judges whether electric braking is effective, in the case where electric braking is invalid, opens when vehicle issues brake signal
Dynamic mechanical braking；If electric braking is effective, vehicle applies electric braking.
Step B, brake force needed for calculating vehicle according to braking level and load information；
Step C, according between coefficient of friction, theoretical car weight, current vehicle speed and the suspending power between vertical sled and steel plate 1
Relationship, adjust vehicle suspension power, execution fall vehicle.
F=u (GCar weight-FIt suspends) (u is friction system, GCar weightIt is total for theoretical vehicle, according to vehicle actual acceleration
Electric current is adjusted, F is changedIt suspends)。
Step D, CONTACT WITH FRICTION between vertical sled and steel plate 1 carry out friction catch.
Step E, judges whether car speed meets current brake demand.If meeting current brake demand, step is jumped to
Rapid B；If being unsatisfactory for braking requirement, continue to adjust vehicle suspension power (electric current).
As shown in Fig. 2, 2 planing surface surface of F rail is equipped with resistance in medium-and low-speed maglev vehicle mechanical braking system of the invention
High-strength steel sheet 1 is ground, 1 thickness d of steel plate >=10mm is detachably connected between the steel plate 1 and F rail 2 by bolt.Vehicle applies
When mechanical braking, friction generates brake force between vertical sled and steel plate 1.When needing to safeguard, steel plate 1 is removed replacement i.e.
It can.Convenient for braking, rescuing the maintenance of support wheel orbit plane.
Medium-and low-speed maglev vehicle mechanical braking system includes:
Start unit: for judging whether electric braking is effective, in the invalid feelings of electric braking when vehicle issues brake signal
Under condition, start mechanical braking；
Braking force calculation unit: for brake force needed for calculating vehicle according to braking level and load information；
Fall vehicle execution unit: for according to coefficient of friction, the theoretical car weight, current vehicle speed between vertical sled and steel plate 1
Relationship between suspending power, adjusts vehicle suspension power, and execution falls vehicle；
Vertical sled: for falling CONTACT WITH FRICTION between Che Shiyu steel plate 1, friction catch is realized；
Judging unit: it for judging whether car speed meets current brake demand, is unsatisfactory for currently making in car speed
When dynamic demand, continue to adjust vehicle suspension power.
The present invention realizes the mechanical braking of medium-and low-speed maglev vehicle using the friction of vertical sled and 2 upper steel plate 1 of F rail, can
To solve the contradiction between 2 surface of F rail paint and brake friction pair, braking ability index is effectively improved, while to brake, rescuing
It helps support wheel damage rail level and maintenance convenience is provided.
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 (9)
1. a kind of medium-and low-speed maglev vehicle mechanical braking method, comprising:
Step A judges whether electric braking is effective when vehicle issues brake signal, in the case where electric braking is invalid, starter motor
Tool braking；
It is characterized in that, further comprising the steps of:
Step B, brake force needed for calculating vehicle；
Step C, according between coefficient of friction, theoretical car weight, current vehicle speed and the suspending power between vertical sled and F rail (2)
Relationship, adjusts vehicle suspension power, and execution falls vehicle；
Step D, CONTACT WITH FRICTION between vertical sled and F rail (2) carry out friction catch；
Step E, judges whether car speed meets current brake demand, when car speed is unsatisfactory for current brake demand, after
It is continuous to adjust vehicle suspension power.
2. medium-and low-speed maglev vehicle mechanical braking method as described in claim 1, which is characterized in that in the step B, according to
Brake force needed for braking level and load information calculating vehicle.
3. medium-and low-speed maglev vehicle mechanical braking method as claimed in claim 1 or 2, which is characterized in that before step A also
Include:
Step A1 is equipped with a steel plate (1) on the planing surface surface of F rail (2)；
In the step C, according to coefficient of friction, theoretical car weight, current vehicle speed and the suspending power between vertical sled and steel plate (1)
Between relationship, adjust vehicle suspension power, execution fall vehicle；
In the step D, CONTACT WITH FRICTION between vertical sled and steel plate (1) carries out friction catch.
4. medium-and low-speed maglev vehicle mechanical braking method as claimed in claim 3, which is characterized in that the steel plate (1) and F rail
(2) detachable to be connected.
5. a kind of medium-and low-speed maglev vehicle mechanical braking system, comprising:
Start unit: for judging whether electric braking is effective, in the invalid situation of electric braking when vehicle issues brake signal
Under, start mechanical braking；
It is characterized by further comprising:
Braking force calculation unit: for calculating brake force needed for vehicle；
Fall vehicle execution unit: for according between vertical sled and F rail (2) coefficient of friction, theoretical car weight, current vehicle speed and hang
Relationship between buoyancy, adjusts vehicle suspension power, and execution falls vehicle；
Vertical sled: for falling CONTACT WITH FRICTION between Che Shiyu F rail (2), friction catch is realized；
Judging unit: for judging whether car speed meets current brake demand, being unsatisfactory for current brake in car speed is needed
When asking, continue to adjust vehicle suspension power.
6. medium-and low-speed maglev vehicle mechanical braking system as claimed in claim 5, which is characterized in that the brake force calculates single
In member, brake force needed for calculating vehicle according to braking level and load information.
7. such as medium-and low-speed maglev vehicle mechanical braking system described in claim 5 or 6, which is characterized in that further include being set to F rail
(2) steel plate (1) on planing surface surface；
It is described to fall in vehicle execution unit, according to coefficient of friction, the theoretical car weight, current vehicle speed between vertical sled and steel plate (1)
Relationship between suspending power, adjusts vehicle suspension power, and execution falls vehicle；
The vertical sled is used to fall CONTACT WITH FRICTION between Che Shiyu steel plate (1), realizes friction catch.
8. such as medium-and low-speed maglev vehicle mechanical braking system described in claim 5 or 6, which is characterized in that the steel plate (1) with
F rail (2) is detachably connected.
9. medium-and low-speed maglev vehicle mechanical braking system as claimed in claim 8, which is characterized in that the steel plate (1) and F rail
(2) detachably it is connected between by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424366.4A CN110103722A (en) | 2019-05-21 | 2019-05-21 | A kind of medium-and low-speed maglev vehicle mechanical braking method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424366.4A CN110103722A (en) | 2019-05-21 | 2019-05-21 | A kind of medium-and low-speed maglev vehicle mechanical braking method and system |
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| Publication Number | Publication Date |
|---|---|
| CN110103722A true CN110103722A (en) | 2019-08-09 |
Family
ID=67491301
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910424366.4A Pending CN110103722A (en) | 2019-05-21 | 2019-05-21 | A kind of medium-and low-speed maglev vehicle mechanical braking method and system |
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| CN (1) | CN110103722A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492815A (en) * | 2020-03-19 | 2021-10-12 | 中车唐山机车车辆有限公司 | Braking control device for train falling and magnetic suspension train |
| CN115817185A (en) * | 2023-02-15 | 2023-03-21 | 华东交通大学 | Speed control method and system for medium-low speed maglev train |
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|---|---|---|---|---|
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| CN115817185A (en) * | 2023-02-15 | 2023-03-21 | 华东交通大学 | Speed control method and system for medium-low speed maglev train |
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Application publication date: 20190809 |