CN203005412U - Electronic weighing valve control device for rail transit vehicle - Google Patents
Electronic weighing valve control device for rail transit vehicle Download PDFInfo
- Publication number
- CN203005412U CN203005412U CN 201320017996 CN201320017996U CN203005412U CN 203005412 U CN203005412 U CN 203005412U CN 201320017996 CN201320017996 CN 201320017996 CN 201320017996 U CN201320017996 U CN 201320017996U CN 203005412 U CN203005412 U CN 203005412U
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- load pressure
- brake load
- electromagnetic valve
- pressure
- actual brake
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Abstract
The utility model provides an electronic weighing valve control device for a rail transit vehicle, which comprises an air spring pressure sensor of an air spring pressure signal for measuring and reflecting vehicle load, a solenoid valve bank for outputting actual braking load pressure, a braking load pressure sensor for measuring the actual braking load pressure, and a microcontroller, wherein the microcontroller is connected with the air spring pressure sensor, the braking load pressure sensor and the solenoid valve bank, receives the air spring pressure signal and the actual braking load pressure, and controls the solenoid valve bank to adjust the actual braking load pressure according to braking load pressure required for calculating emergency braking by the air spring pressure signal, and according to a difference between the braking load pressure required by the emergency braking and the actual braking load pressure.
Description
Technical field
The utility model relates to a kind of electronic-weighing control valve device of rail traffic vehicles.
Background technology
The brake system of urban rail transit vehicles generally all has service braking and emergency braking pattern.What normal train deceleration and stopping used is service braking, and emergency braking is the braking of the assurance safety in case of emergency used.Emergency braking is generally the friction braking of the pure machinery of pressure air control.For guaranteeing the conformability of emergency braking deceleration/decel, the braking force of emergency braking is wanted and can automatically be adjusted the size of braking force according to car load, realizes that emergency braking load automatic regulating apparatus is called load trimmer valve (weighing valve).
Existing weighing valve is generally mechanical arithmetical organ, and input control signal is adapt air spring pressure, and output signal is the pre-governor pressure of emergency braking.But the moving mechanism of calculating comprises adapt air spring pressure template mechanism, pre-control pressure template mechanism floating rod and triple valve etc.When vehicle carried increase, the pressure of air bellow is corresponding increase also, and the delivery pressure of weighing valve is relation increase according to a certain percentage also, and when implementing emergency braking, corresponding Emergency Negative Thrust also can correspondingly increase.
Mechanical weighing valve does not use power supply, the risk that does not have power cut-off and electronic component to lose efficacy.But mechanical weighing valve volume and weight is all larger, and parameter adjustment is cumbersome, and the proportionate relationship of delivery pressure and incoming signal has certain limitation.
The utility model content
For the defective of prior art, the utility model provides a kind of electronic-weighing control valve device of rail traffic vehicles, comprising: the empty spring pressure sensor of measuring the empty spring pressure signal of reflection car load; Export the electromagnetic valve group of actual brake load pressure; Measure the brake load pressure sensor of actual brake load pressure; Microcontroller, be connected with described empty spring pressure sensor, brake load pressure sensor and described electromagnetic valve group and receive described empty spring pressure signal and actual brake load pressure, wherein said microcontroller calculates the required brake load pressure of emergency braking according to described empty spring pressure signal, and the described electromagnetic valve group of poor control between the brake load pressure required according to described emergency braking and actual brake load pressure is to adjust described actual brake load pressure.
according to an aspect of the present utility model, described electromagnetic valve group comprises fills/air draft electromagnetic valve and maintenance electromagnetic valve, when actual brake load pressure during lower than the required brake load pressure of emergency braking, described microcontroller makes described filling/air draft electromagnetic valve and keeps electromagnetic valve to switch on simultaneously action to be communicated with the gas fill port of brake load pressure chamber, actual brake load pressure rise, when actual brake load pressure and the required brake load pressure of emergency braking near the time, described microprocessor control keeps the electromagnetic valve outage to discharge, keep the described gas fill port of solenoid valve shuts, actual brake load pressure is remained unchanged, when actual brake load pressure during higher than the required brake load pressure of emergency braking, described microcontroller make fill/air draft gas magnet valve outage discharges but keeps electromagnetic valve to switch on to be communicated with the exhaust channel of brake load pressure chamber, actual brake load pressure drop, when actual brake load pressure and the required brake load pressure of emergency braking near the time, described microprocessor control keeps the electromagnetic valve outage to discharge, keep the described exhaust channel of solenoid valve shuts, actual brake load pressure is remained unchanged.
Electronic-weighing valve body of the present utility model is long-pending little, flexible arrangement, thereby can satisfy the demand that frame is controlled moving system.Simultaneously, mechanical weighing valve need be adjusted when just adjusting one by one, also needs to add pressure regulating valve when adjusting and repeatedly adjusts, and the operation of adjusting is time-consuming, after adopting the electronic-weighing valve, only need to revise parameter and just can adjust and complete whole weighing valves in the whole network segment in maintenance software.
Description of drawings
Below, in connection with accompanying drawing, preferred implementation of the present utility model is described in more detail, wherein:
Fig. 1 is the principle schematic according to the electronic-weighing control valve device of an embodiment of the present utility model; And
Fig. 2 is the constructional drawing according to the electronic-weighing control valve device of an embodiment of the present utility model.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Electronic-weighing control valve device adopts pressure sensor of the present utility model, electromagnetic valve and microcontroller (MCU) substitute weigh template group and the triple valve of weighing valve in machinery.
Fig. 1 is the principle schematic that electronic-weighing valve of the present utility model is controlled dress/1.As shown in Figure 1, electronic-weighing control valve device 1 comprises: empty spring pressure sensor 10, microcontroller 20, electromagnetic valve group 30, brake load pressure sensor 40.
Its hollow spring pressure sensor 10 is used for measuring empty spring pressure (ASP) signal of reflection car load.Empty spring pressure sensor 10 is connected with microcontroller 20, and the empty spring pressure signal transmission of surveying is arrived microprocessor 20.
The electromagnetic valve group 30 actual brake load pressure of output are as realizing emergency braking pre-control input pressure.
Brake load pressure sensor 40 is measured actual brake load pressure.Brake load pressure sensor 40 is connected with microcontroller 20, and the actual brake load pressure of measuring is sent to microcontroller 20.Microcontroller 20 calculates the required brake load pressure of emergency braking according to the empty spring pressure signal of surveying, and poor between the brake load pressure required according to described emergency braking and actual brake load pressure, by closed loop control, utilize described electromagnetic valve group 30, control and adjust described actual brake load pressure.
As shown in Figure 2, described electromagnetic valve group 30 comprises and filling/air draft electromagnetic valve 32 and keep electromagnetic valve 34.When actual brake load pressure during lower than the required brake load pressure of emergency braking, microcontroller 20 makes and fills/air draft electromagnetic valve 32 and keep electromagnetic valve 34 switch on simultaneously action with the gas fill port of connection brake load pressure chamber, actual brake load pressure in gas replenishment process with rising.When actual brake load pressure and the required brake load pressure of emergency braking very near the time (for example poor less than 3kPa), microcontroller 20 is controlled and is kept electromagnetic valve 34 outages to discharge, keep electromagnetic valve 34 to cut off the gas fill port of brake load pressure chamber, actual brake load pressure is remained unchanged.As a same reason when actual brake load pressure during higher than the required brake load pressure of emergency braking, microcontroller 20 make fill/air draft gas magnet valve 32 outage discharges but keeps electromagnetic valve 34 energising actions being communicated with the exhaust channel of brake load pressure chamber, actual brake load pressure in exhaust process with slow decreasing.When actual brake load pressure and the required brake load pressure of emergency braking very near the time, microcontroller 20 is controlled and is kept electromagnetic valve 34 outages to discharge, keep electromagnetic valve 34 to cut off the exhaust channel of brake load pressure chamber, actual brake load pressure is remained unchanged.
For improving the electronic-weighing valve to the precision that car load detects, adopted two ASP sensors to detect respectively the pressure of two empty springs, and calculated car load according to the aviation value of two empty spring pressure.
Emergency brake cylinder pressure stability during for the assurance power cut-off, the control of brake load pressure has been adopted and has been kept electromagnetic valve 34 and fill/mode that air draft gas magnet valve 32 makes up, keep afterwards electromagnetic valve 34 can cut off inflation and the exhaust channel of brake load pressure chamber in outage like this, make the pressure of brake load pressure chamber keep constant, emergency brake pressure still can be remained unchanged when outage.
Possible risk when reducing the electronic control system fault, the electronic-weighing valve also is provided with mechanical limiting valve, minimum and the maximum pressure of emergency braking can be limited in certain safe range.Adopt the limiting valve of restriction maximum pressure at the input end of controlling electromagnetic valve, adopted at the mouth of weighing valve and got large output shuttle valve, or adopted the relay valve of the control of initial tension of spring to realize restriction to minimal pressure.
Above-described embodiment is only for illustration of the utility model, and be not to be to restriction of the present utility model, the those of ordinary skill in relevant technologies field, in the situation that do not break away from the utility model scope, can also make a variety of changes and modification, therefore, all technical schemes that are equal to also should belong to the disclosed category of the utility model.
Claims (3)
1. the electronic-weighing control valve device of a rail traffic vehicles comprises:
Measure the empty spring pressure sensor of the empty spring pressure signal of reflection car load;
Export the electromagnetic valve group of actual brake load pressure;
Measure the brake load pressure sensor of actual brake load pressure;
Microcontroller, be connected with described empty spring pressure sensor, brake load pressure sensor and described electromagnetic valve group and receive described empty spring pressure signal and actual brake load pressure, wherein said microcontroller calculates the required brake load pressure of emergency braking according to described empty spring pressure signal, and the described electromagnetic valve group of poor control between the brake load pressure required according to described emergency braking and actual brake load pressure is to adjust described actual brake load pressure.
2. electronic-weighing control valve device according to claim 1, it is characterized in that, described electromagnetic valve group comprises fills/air draft electromagnetic valve and maintenance electromagnetic valve, when actual brake load pressure during lower than the required brake load pressure of emergency braking, described microcontroller makes described filling/air draft electromagnetic valve and keeps electromagnetic valve to switch on simultaneously action to be communicated with the gas fill port of brake load pressure chamber, actual brake load pressure rise, when actual brake load pressure and the required brake load pressure of emergency braking near the time, described microprocessor control keeps the electromagnetic valve outage to discharge, keep the described gas fill port of solenoid valve shuts, actual brake load pressure is remained unchanged, when actual brake load pressure during higher than the required brake load pressure of emergency braking, described microcontroller make fill/air draft gas magnet valve outage discharges but keeps electromagnetic valve to switch on to be communicated with the exhaust channel of brake load pressure chamber, actual brake load pressure drop, when actual brake load pressure and the required brake load pressure of emergency braking near the time, described microprocessor control keeps the electromagnetic valve outage to discharge, keep the described exhaust channel of solenoid valve shuts, actual brake load pressure is remained unchanged.
3. electronic-weighing control valve device according to claim 1 and 2, it is characterized in that, described electronic-weighing control valve device also is connected to first limiting valve of restriction maximum pressure of the input end of electromagnetic valve group, also comprise the large output shuttle valve of getting of the mouth that is connected to the electromagnetic valve group, or adopt the relay valve of the control of initial tension of spring to realize restriction to minimal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017996 CN203005412U (en) | 2013-01-14 | 2013-01-14 | Electronic weighing valve control device for rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017996 CN203005412U (en) | 2013-01-14 | 2013-01-14 | Electronic weighing valve control device for rail transit vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203005412U true CN203005412U (en) | 2013-06-19 |
Family
ID=48597035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320017996 Expired - Lifetime CN203005412U (en) | 2013-01-14 | 2013-01-14 | Electronic weighing valve control device for rail transit vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203005412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN107063677A (en) * | 2017-06-27 | 2017-08-18 | 眉山中车制动科技股份有限公司 | A kind of weighing valve performance test stand |
-
2013
- 2013-01-14 CN CN 201320017996 patent/CN203005412U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN107063677A (en) * | 2017-06-27 | 2017-08-18 | 眉山中车制动科技股份有限公司 | A kind of weighing valve performance test stand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |