CN108891265B - Pantograph leather bag damage protector and control method thereof - Google Patents
Pantograph leather bag damage protector and control method thereof Download PDFInfo
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- CN108891265B CN108891265B CN201810905833.0A CN201810905833A CN108891265B CN 108891265 B CN108891265 B CN 108891265B CN 201810905833 A CN201810905833 A CN 201810905833A CN 108891265 B CN108891265 B CN 108891265B
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- cavity
- way
- valve
- leather bag
- pneumatic control
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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
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/32—Devices for lifting and resetting the collector using fluid pressure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention aims to provide a pantograph leather bag damage protector and a control method thereof, which are used for solving the technical problem of timely protecting a pantograph after leather bags are damaged. The device comprises a pneumatic logic base, a double pneumatic control two-position three-way valve and a throttle valve; the double pneumatic control two-position three-way valve is arranged on the pneumatic logic base, and the throttle valve is respectively arranged on the pneumatic logic base; the pneumatic logic base is respectively provided with an air inlet cavity, an air supply connection port of the two-position three-way pneumatic control valve, an air outlet cavity, a throttling air supply cavity, a jet nozzle, an arch lowering control port of the two-position three-way pneumatic control valve, an arch raising control port of the two-position three-way pneumatic control valve, a vacuum generating cavity, a pressure maintaining cavity and a pressure balancing cavity. The control method comprises the following steps: the operation of lifting the bow, the action of lowering the bow when the leather bag is damaged, the action of lowering the bow after the leather bag is repaired and the normal action state is carried out. The invention has the beneficial effects that: the defect that the vehicle can only be checked by manpower is overcome, and the reliability of safe operation of the vehicle is ensured.
Description
Technical Field
The invention relates to the technical field of pantograph protectors, in particular to a pantograph leather bag damage protector and a control method thereof.
Background
At present, electric drive in rail transit equipment is taken as a main flow power source, and high-speed rail locomotives, subways, electric locomotives and the like which are widely applied basically adopt high-voltage electric drive. The electric power application in the track transportation equipment is not separated from an important device of a pantograph, the pantograph is a bridge for connecting a high-voltage cable and the transportation equipment, the pantograph plays an extremely important auxiliary role in the running process of a vehicle, and the design structure of the pantograph is special and must ensure constant pressure when the pantograph contacts with the high-voltage cable so as to prevent the arc discharge phenomenon which is colloquially said and is generated by the high-voltage electric breakdown phenomenon when the carbon sliding plate of the pantograph is separated from the high-voltage cable. In order to ensure the constant pressure, the current pantograph mostly uses leather bags to charge compressed air as a power device
The leather bag effectively solves the problems of lifting and descending of the pantograph and constant pressure contact with a power grid, but has severe structural characteristics and application environment. The leather bag is damaged due to rubber aging, external unexpected factors and the like in the using process. When the leather bag is damaged, the arc discharge phenomenon can be caused due to insufficient lifting force of the pantograph, the service life of the carbon slide plate of the pantograph can be reduced due to arc discharge from a small place, and the power grid burning accident can occur when the leather bag is serious.
In the prior art, in order to solve the above problems, only means for enhancing manual field detection are currently adopted. However, the manual field detection work has low labor efficiency, and the detection work is performed in a high-voltage area, so that the manual field detection work has great risk potential of personal injury.
Disclosure of Invention
The invention aims to provide a pantograph leather bag damage protector and a control method thereof, which are used for solving the technical problem of timely protecting a pantograph after leather bags are damaged.
The technical scheme adopted for solving the technical problems is as follows:
a pantograph leather bag damage protector comprises a pneumatic logic base, a double pneumatic control two-position three-way valve and a throttle valve; the double pneumatic control two-position three-way valve is arranged on the pneumatic logic base, and the throttle valve is respectively arranged on the pneumatic logic base; the pneumatic logic base is respectively provided with an air inlet cavity, an air supply connection port of the two-position three-way pneumatic control valve, an air outlet cavity, a throttling air supply cavity, a jet nozzle, an arch lowering control port of the two-position three-way pneumatic control valve, an arch raising control port of the two-position three-way pneumatic control valve, a vacuum generating cavity, a pressure maintaining cavity and a pressure balancing cavity.
Further, the throttle valve may adopt a two-way throttle valve or a one-way throttle valve.
Further, a capillary feedback cavity is further arranged on the pneumatic logic base.
Furthermore, the double pneumatic control two-position three-way valve is provided with a silencing dust-proof device.
A control method of a pantograph leather bag damage protector, comprising:
when the normal arch lifting operation is performed, one path of compressed air in the air inlet cavity enters the pressure maintaining cavity through the throttling air supply cavity and the throttling valve, and the pressure of the arch reducing control port of the two-position three-way pneumatic control valve slowly rises; the other path of compressed air enters the air supply connection port of the two-position three-way pneumatic control valve through the jet nozzle, and part of compressed air enters the vacuum generating cavity and reaches the arch lifting control port of the two-position three-way pneumatic control valve through the pressure balancing cavity; the leather bag realizes the action of lifting the bow;
when the leather bag is seriously leaked or accidentally damaged, compressed air flowing rapidly at the jet nozzle generates a vacuum effect at the vacuum generating cavity; vacuum is conducted along the pressure balance cavity, and the pressure at the arch lifting control port of the two-position three-way pneumatic control valve is rapidly reduced; the pressure at the bow-lowering control port of the two-position three-way pneumatic control valve rapidly exceeds the pressure at the bow-raising control port of the two-position three-way pneumatic control valve; the leather bag realizes the bow lowering action, and the pantograph enters a bow lowering locking state;
when the damage of the leather bag is repaired, the normal action state is carried out after the bow lowering action is operated.
Further, a capillary feedback cavity is arranged and communicated with the leather bag through an air outlet cavity.
Further, the throttle valve adopts a two-way throttle valve; when the damage of the leather bag is repaired, delay operation is adopted firstly when the bow is lowered, and then normal action state is carried out.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and the above technical solution has the following advantages or beneficial effects:
1. the invention solves the current situation that the leakage or damage of the pantograph leather bag puzzled in the industry can only be checked by manpower and the problems can not be avoided immediately when the vehicle runs, and provides powerful guarantee for the safe operation of related transportation equipment, in particular to the safe operation of public transportation equipment. And the reliability of safe operation of the vehicle under unexpected conditions is ensured.
2. The application of the invention can greatly relieve the intensity and frequency of regular spot inspection and maintenance of the original vehicles, and save a great deal of detection manpower and cost for application and maintenance of road authorities and vehicle sections.
3. The invention utilizes the pneumatic back pressure, throttling aging and jet vacuum principle design, and can timely detect leakage points and damages which are not serious to leakage by the principles of fluid throttling pressure delay and jet vacuum generation, timely and safely realize bow reduction, thereby greatly improving the detection sensitivity and the reliability of the device.
4. The invention has the advantages of reliable self-locking after triggering action, simple and convenient function operation and convenient use, and can automatically delay memory recovery, thereby having very practical application value and practical significance.
Drawings
FIG. 1 is a schematic perspective view of an overall structure of an embodiment of the present invention;
FIG. 2 is a schematic front view of FIG. 1 of the present invention;
FIG. 3 is a schematic view of the cross-section A-A of FIG. 2;
in the figure: 1. an air inlet cavity; 2. two-position three-way pneumatic control valve air supply connector; 3. the two-position three-way pneumatic control valve is provided with an air outlet connector; 4. an air outlet cavity; 5. a throttle air supply chamber; 6. jet nozzle; 7. a throttle valve; 8. a bow-lowering control port of the two-position three-way pneumatic control valve; 9. a two-position three-way pneumatic control valve bow-lifting control port; 10. a vacuum generating chamber; 11. a pressure holding chamber; 12. a capillary feedback chamber; 13. a pressure balancing chamber; 14. a double pneumatic control two-position three-way valve; 15. a silencing dust-proof device; 17. pneumatic logic base.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and well-known techniques are omitted so as to not unnecessarily obscure the present invention.
As shown in fig. 1 to 3, a pantograph leather bag breakage protector includes a pneumatic logic base 17, a double pneumatic control two-position three-way valve 14, a silencing dust collector 15, and a throttle valve 7 (a two-way throttle valve); the silencing dust collector 15 is arranged on the double pneumatic control two-position three-way valve 14, and the double pneumatic control two-position three-way valve 14 is arranged at the upper end of the pneumatic logic base 17 through a fastening bolt 18; the throttle valve 7 is mounted in a pneumatic logic seat 17.
The pneumatic logic base 17 is provided with an air inlet cavity 1, a two-position three-way pneumatic control valve air supply connection port 2, a two-position three-way pneumatic control valve air outlet connection port 3, an air outlet cavity 4, a throttling air supply cavity 5, a jet nozzle 6, a two-position three-way pneumatic control valve bow-lowering control port 8, a two-position three-way pneumatic control valve bow-raising control port 9, a vacuum generation cavity 10, a pressure maintaining cavity 11, a capillary feedback cavity 12 and a pressure balancing cavity 13. When in use, the device can normally operate only by connecting the device to the original leather bag control pipeline in series. The vehicle leather bag lifting bow is controlled to cut off the compressed air pipe, the air inlet cavity 1 is connected with the air outlet end of the vehicle air source, and the two-position three-way air control valve air outlet connection port 3 is connected with the other port of the cut-off compressed air pipe, so that the vehicle leather bag lifting bow can be put into use.
In normal arching operation, the air intake chamber 1 receives compressed air from an air source. The compressed air slowly enters the pressure maintaining cavity 11 through the throttling action of the throttling air supply cavity 5 and the throttling valve 7, and the pressure of the bow reducing control port 8 of the two-position three-way pneumatic control valve slowly rises (until the time delay is consistent with the air source pressure). The other path of compressed air enters the two-position three-way pneumatic control valve air supply connection port 2 through the jet nozzle 6; meanwhile, part of compressed air enters the vacuum generating cavity 10 and then reaches the two-position three-way pneumatic control valve bow-lifting control port 9 through the pressure balancing cavity 13. Because the two-position three-way pneumatic control valve bow lifting control port 9 is rapidly boosted, the bow lifting control cavity and the bow lowering control cavity of the double pneumatic control two-position three-way valve 14 generate pressure difference and push the valve core in the double pneumatic control two-position three-way valve 14 to move towards the bow lifting direction, thereby realizing the conduction of the two-position three-way pneumatic control valve air supply connection port 2 and the two-position three-way pneumatic control valve air outlet connection port 3 and realizing the bow lifting action of the leather bag. After the leather bag lifts the bow in place, the whole system generates pressure balance, the pressure of the bow lifting control cavity and the pressure of the bow lowering control cavity of the double pneumatic control two-position three-way valve 14 are the same, at the moment, the device is in a stable bow lifting conducting position, and the pantograph enters a normal running state.
When the leather bag for controlling the lifting of the pantograph is seriously leaked or accidentally damaged, compressed air can be quickly dissipated through the damaged opening of the leather bag, so that the system can quickly supplement air through an air source, and the original pressure balance state of the system can be broken. According to the Laval nozzle principle, compressed air flowing rapidly at the jet nozzle 6 will create a vacuum effect at the vacuum generating chamber 10. The vacuum is conducted along the pressure balance cavity 13, so that the pressure of the two-position three-way pneumatic control valve at the arch lifting control port 9 is rapidly reduced. Meanwhile, the arch-lowering control port 8 of the two-position three-way pneumatic control valve is filled with enough compressed air due to the fact that the pressure maintaining cavity 11 is filled with the compressed air; and, although the rapid air supplementing at the air inlet cavity 1 causes a certain pressure drop, the air pressure at the bow-reducing control port 8 of the two-position three-way air control valve is prevented from dropping due to the postponement conduction effect of the throttle valve 7. Therefore, the pressure at the bow-lowering control port of the two-position three-way pneumatic control valve can rapidly exceed the pressure at the bow-raising control port 9 of the two-position three-way pneumatic control valve. That is, the air pressure of the bow lowering control chamber of the double pneumatic control two-position three-way valve 14 is higher than the air pressure of the bow raising control chamber, so that the valve core in the double pneumatic control two-position three-way valve 14 is pushed to move towards the bow lowering direction. Further, the two-position three-way pneumatic control valve air outlet connection port 3 is communicated with the air outlet of the double pneumatic control two-position three-way valve 14, air is discharged from the silencing dust collector 15 (for ensuring quick air discharge, double exhaust is realized), and the leather bag realizes the bow-lowering action. In this case, the two-position three-way pneumatic control valve air supply connection port 2 and the two-position three-way pneumatic control valve air outlet connection port 3 are in a non-conductive state, and the pantograph will enter a pantograph falling locking state. In order to ensure the reliability of locking the pantograph, a capillary feedback cavity 12 is designed to be communicated with the leather bag through an air outlet cavity 4; the slight pressure release at the capillary feedback cavity 12 is designed, so that the pressure of the arch lifting control port 9 of the two-position three-way pneumatic control valve is definitely smaller than the pressure at the arch lowering control port 8 of the two-position three-way pneumatic control valve, and the aim of reliably lowering the arch and locking is fulfilled. Slight pressure release can be lost to the atmosphere through the damaged part of the leather bag, and the occurrence of misoperation of the leather bag can be avoided.
When the damage of the leather bag is repaired, the driver only needs to operate the bow lowering action and keep the bow lowering action for a certain time (for example, 60 seconds, the time can be set before leaving the factory according to the requirement). The time delay operation is carried out because the air inlet cavity 1 enters a complete pressure release state, and the pressure at the arch lifting control port 9 of the two-position three-way pneumatic control valve connected with the air inlet cavity is also rapidly reduced to 0; however, the pressure maintaining chamber 11 and the connected two-position three-way pneumatic control valve bow-lowering control port 8 can reach an initial state only by slowly releasing pressure through the throttle valve 7 for a period of time, so as to prevent misoperation. After the delay is finished, the system can automatically enter a normal action circulation state.
The delay reset processing is unnecessary, and the bidirectional throttle valve is changed into the unidirectional throttle valve, so that the instant reset function can be realized. However, in order to improve the reliability of the operation of the device, a time delay design is preferably adopted so as to ensure the personal safety of maintenance personnel.
Other than the technical features described in the specification, all are known to those skilled in the art.
While the foregoing description of the embodiments of the present invention has been presented with reference to the drawings, it is not intended to limit the scope of the invention, and on the basis of the technical solutions of the present invention, various modifications or variations can be made by those skilled in the art without the need of inventive effort, and still remain within the scope of the invention.
Claims (7)
1. The pantograph leather bag damage protector is characterized by comprising a pneumatic logic base, a double pneumatic control two-position three-way valve and a throttle valve; the double pneumatic control two-position three-way valve is arranged on the pneumatic logic base, and the throttle valve is respectively arranged on the pneumatic logic base; the pneumatic logic base is respectively provided with an air inlet cavity, an air supply connection port of the two-position three-way pneumatic control valve, an air outlet cavity, a throttling air supply cavity, a jet nozzle, an arch lowering control port of the two-position three-way pneumatic control valve, an arch raising control port of the two-position three-way pneumatic control valve, a vacuum generating cavity, a pressure maintaining cavity and a pressure balancing cavity.
2. The pantograph leather bag breakage protector according to claim 1, wherein the throttle valve is a two-way throttle valve or a one-way throttle valve.
3. The pantograph leather bag breakage protector according to claim 1, wherein the pneumatic logic base is further provided with a capillary feedback cavity.
4. The pantograph leather bag breakage protector according to claim 1, wherein the double pneumatic control two-position three-way valve is provided with a silencing dust-proof device.
5. The control method of a pantograph leather bag breakage protector according to claim 1, comprising: when the normal arch lifting operation is performed, one path of compressed air in the air inlet cavity enters the pressure maintaining cavity through the throttling air supply cavity and the throttling valve, and the pressure of the arch reducing control port of the two-position three-way pneumatic control valve slowly rises; the other path of compressed air enters the air supply connection port of the two-position three-way pneumatic control valve through the jet nozzle, and part of compressed air enters the vacuum generating cavity and reaches the arch lifting control port of the two-position three-way pneumatic control valve through the pressure balancing cavity; the leather bag realizes the action of lifting the bow;
when the leather bag is seriously leaked or accidentally damaged, compressed air flowing rapidly at the jet nozzle generates a vacuum effect at the vacuum generating cavity; vacuum is conducted along the pressure balance cavity, and the pressure at the arch lifting control port of the two-position three-way pneumatic control valve is rapidly reduced; the pressure at the bow-lowering control port of the two-position three-way pneumatic control valve rapidly exceeds the pressure at the bow-raising control port of the two-position three-way pneumatic control valve; the leather bag realizes the bow lowering action, and the pantograph enters a bow lowering locking state;
when the damage of the leather bag is repaired, the normal action state is carried out after the bow lowering action is operated.
6. The method of claim 5, wherein the capillary feedback chamber is connected to the bladder via an air outlet chamber.
7. The method for controlling a pantograph leather bag breakage protector according to claim 5, wherein the throttle valve is a two-way throttle valve; when the damage of the leather bag is repaired, delay operation is adopted firstly when the bow is lowered, and then normal action state is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905833.0A CN108891265B (en) | 2018-08-09 | 2018-08-09 | Pantograph leather bag damage protector and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905833.0A CN108891265B (en) | 2018-08-09 | 2018-08-09 | Pantograph leather bag damage protector and control method thereof |
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| Publication Number | Publication Date |
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| CN108891265A CN108891265A (en) | 2018-11-27 |
| CN108891265B true CN108891265B (en) | 2023-08-25 |
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| CN201810905833.0A Active CN108891265B (en) | 2018-08-09 | 2018-08-09 | Pantograph leather bag damage protector and control method thereof |
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| EP1862347A1 (en) * | 2006-05-29 | 2007-12-05 | Faiveley Transport | Control system for a pantograph, method implemented and control module for such a system |
| CN202294326U (en) * | 2011-11-08 | 2012-07-04 | 北京赛德高科铁道电气科技有限责任公司 | Automatic pantograph lifting device of pantograph |
| CN202399930U (en) * | 2011-12-22 | 2012-08-29 | 北京赛德高科铁道电气科技有限责任公司 | Active adjusting device of contact force of air-bag type pantograph |
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| JP5937728B1 (en) * | 2015-06-17 | 2016-06-22 | 日本車輌製造株式会社 | Pantograph automatic descent system for trains |
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| CN208827605U (en) * | 2018-08-09 | 2019-05-07 | 济南同创工控自动化有限公司 | A kind of pantograph leather bag breakage protector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1128563A (en) * | 1966-03-18 | 1968-09-25 | British Railways Board | Pantograph installations for electric locomotive vehicles |
| CN102431458B (en) * | 2011-11-29 | 2013-12-04 | 南车株洲电力机车有限公司 | Pantograph control device and pantograph control method |
| CN103016424B (en) * | 2012-11-22 | 2015-09-30 | 温州阿尔贝斯气动有限公司 | A kind of integrated type vacuum generator |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1862347A1 (en) * | 2006-05-29 | 2007-12-05 | Faiveley Transport | Control system for a pantograph, method implemented and control module for such a system |
| CN202294326U (en) * | 2011-11-08 | 2012-07-04 | 北京赛德高科铁道电气科技有限责任公司 | Automatic pantograph lifting device of pantograph |
| CN202399930U (en) * | 2011-12-22 | 2012-08-29 | 北京赛德高科铁道电气科技有限责任公司 | Active adjusting device of contact force of air-bag type pantograph |
| CN202971355U (en) * | 2012-11-22 | 2013-06-05 | 温州阿尔贝斯气动有限公司 | Integrated vacuum generator |
| JP5937728B1 (en) * | 2015-06-17 | 2016-06-22 | 日本車輌製造株式会社 | Pantograph automatic descent system for trains |
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| CN208827605U (en) * | 2018-08-09 | 2019-05-07 | 济南同创工控自动化有限公司 | A kind of pantograph leather bag breakage protector |
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| CN108891265A (en) | 2018-11-27 |
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Effective date of registration: 20230802 Address after: Building 104, No. 19, Xinmao Qilu Science and Technology City, Tianqiao District, Jinan City, Shandong Province, 250119 Applicant after: JINAN TONGCHUANG INDUSTRIAL AUTOMATION Co.,Ltd. Address before: Building 106, Building 19, No.1 Zidong Avenue, Jinan New Materials Industrial Park, Sangzidian Town, Tianqiao District, Jinan City, Shandong Province, 250000 Applicant before: SHANDONG TONGCHUANG INDUSTRIAL CONTROL AUTOMATION Co.,Ltd. |
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