CN111347882B - Air valve box integrated with automatic bow lowering function - Google Patents

Air valve box integrated with automatic bow lowering function Download PDF

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Publication number
CN111347882B
CN111347882B CN202010275950.0A CN202010275950A CN111347882B CN 111347882 B CN111347882 B CN 111347882B CN 202010275950 A CN202010275950 A CN 202010275950A CN 111347882 B CN111347882 B CN 111347882B
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China
Prior art keywords
valve
air
box
pantograph
quick
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CN202010275950.0A
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CN111347882A (en
Inventor
周维
宾远东
朱进
康锡忠
段永忠
阳雄
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Zhuzhou Wanxin Rail Electric Technology Co ltd
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Zhuzhou Wanxin Rail Electric Technology Co ltd
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Classifications

    • 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
    • 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)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

The air valve box integrating the automatic bow lowering function comprises a box cover, a left air inlet, a right air inlet, an air outlet, an air channel block I, a box body, a filter valve, a bow raising throttle valve, a pressure regulating valve, a bow lowering throttle valve, a pressure gauge and a safety valve; be equipped with the feedback mouth on the gas circuit piece I, be equipped with quick exhaust valve in the box, quick exhaust valve is connected with the gas outlet on the gas circuit piece I through the gas circuit pipe that is equipped with the stop valve, quick exhaust valve passes through the gas circuit pipe and is connected with the feedback mouth on the gas circuit piece I, feedback mouth connects gas circuit pipe to pantograph carbon slide, and the combination becomes a whole, is called automatic bow unit that falls, inside air flue or the air cavity of being equipped with of carbon slide. According to the invention, the automatic bow lowering function is integrated in the air valve box, so that the arrangement of a pantograph air circuit can be simplified, the pipeline between the existing pantograph air valve box and an automatic bow lowering device is shortened, the cost is saved, and the pantograph assembly efficiency is improved; meanwhile, the leakage risk brought by the arrangement of the air paths of the pantograph can be reduced, and the running stability of the pantograph is improved.

Description

Air valve box integrated with automatic bow lowering function
Technical Field
The invention relates to an air valve box, in particular to an air valve box integrated with an automatic bow-lowering function.
Background
The automatic bow-lowering function of the existing pantograph belongs to a selected component, and most of the existing urban rail pantographs are not provided with the function. The air valve box and the automatic bow lowering device of the pantograph with the automatic bow lowering function are two different units which are respectively arranged at two positions of the pantograph underframe. The air valve box is a combination of pneumatic elements, integrates elements such as a filter valve, a pantograph lifting throttle valve, a precise pressure regulating valve, a pantograph lowering throttle valve, a safety valve and the like, supplies air to the pantograph, controls the lifting of the pantograph and regulates the contact pressure; the automatic bow-lowering device is provided with a gas path monitoring system for protecting the contact net wire and the pantograph slide plate from excessive abrasion after reaching the minimum abrasion limit.
However, no study and report on an air valve box integrating an automatic bow-lowering function is currently known.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air valve box integrating an automatic bow lowering function aiming at the defects of the prior art.
The technical scheme adopted for solving the technical problems is as follows: an air valve box integrating an automatic bow lowering function comprises a box cover, a left air inlet, a right air inlet, an air outlet, an air channel block I, a box body, a filter valve, a bow raising throttle valve, a pressure regulating valve, a bow lowering throttle valve, a pressure gauge and a safety valve;
the filter valve, the lifting arch throttle valve, the pressure regulating valve, the lowering arch throttle valve, the pressure gauge and the safety valve are mutually connected through pipe joints, are fixed on the mounting plate I and are combined into a whole, and are called a pressure regulating unit, the pressure regulating unit is fixed on the box body, the pressure regulating unit is connected with an air outlet on the air channel block I through an air channel pipe, and the left air inlet and the right air inlet are connected with the pressure regulating unit through the air channel pipe;
be equipped with the feedback mouth on the gas circuit piece I, be equipped with quick exhaust valve in the box, quick exhaust valve realizes air connection through the gas circuit pipe that is equipped with the stop valve with the gas outlet on the gas circuit piece I, quick exhaust valve realizes air connection through the gas circuit pipe with the feedback mouth on the gas circuit piece I, feedback mouth connects gas circuit pipe to pantograph carbon slide, and the combination becomes a whole, is called automatic bow unit that falls, inside air flue or the air cavity of being equipped with of carbon slide.
Further, a test valve is arranged on a connecting pipeline of the feedback port on the quick exhaust valve and the air path block I. And the test valve is arranged on the air path block I.
Further, be equipped with mounting panel II in the box, quick exhaust valve passes through the coupling to be fixed on mounting panel II.
Further, the quick discharge port of the quick discharge valve is equipped with a muffler.
Further, the filter valve and the precise pressure regulating valve are fixed on the mounting plate I through a bracket.
Further, the pressure gauge and the safety valve are fixed on the mounting plate I through the air passage block II.
Further, the case cover and the case body are formed by welding sheet metal parts, and the case cover and the case body are connected through connecting pieces to form a box-type structure.
Further, the quick-release valve comprises an upper cavity and a lower cavity, the upper cavity is isolated by a diaphragm and a spring, a small flow guide hole is formed in the diaphragm and used for balancing air pressure, the upper cavity is connected with a feedback port on the air passage block I through an air passage pipe, and the lower cavity is connected with an air inlet and isolated from the quick-release port by the diaphragm.
In the running of the rolling stock, if any damage (breakage or excessive abrasion) exists on the pantograph carbon slide plate or the monitoring pipeline (the connecting pipeline of the automatic pantograph descending unit), compressed gas is leaked, the pressure of the monitoring pipeline is suddenly reduced, the quick-release valve is triggered to start, compressed air in the pantograph air bag enters the air valve box through the air outlet, and is directly discharged to the atmosphere through the quick-release port of the quick-release valve (the quick-release port is provided with a silencer), so that the automatic pantograph descending of the pantograph is realized. The function can also be cut off through a ball valve in the box body, and automatic bow lowering monitoring of the pantograph is closed.
The automatic pantograph lowering function is integrated in the air valve box, so that the arrangement of air circuits of the pantograph can be simplified, the pipeline between the existing air valve box of the pantograph and the automatic pantograph lowering device is shortened, the cost is saved, and the assembly efficiency of the pantograph is improved; meanwhile, the leakage risk brought by the arrangement of the air paths of the pantograph can be reduced, and the running stability of the pantograph is improved. For the existing automatic bow lowering device, the device is completely exposed at present and is corroded by ultraviolet rays and dust for a long time, and a diaphragm in a quick-release valve of the device is easy to fail, so that the bow cannot be raised. The automatic bow-lowering device is integrated in the air valve box, the running environment is improved, the irradiation of ultraviolet rays can be avoided, the erosion of a large amount of dust can be relieved, and the service life and the running stability of the diaphragm can be improved.
Drawings
FIG. 1 is a front view of an embodiment of an air valve box of the present invention incorporating an automatic bow lowering function;
FIG. 2 is a left side view of the embodiment shown in FIG. 1;
FIG. 3 is a schematic view of the internal structure of the embodiment shown in FIG. 1;
FIG. 4 is a schematic view of the quick release valve installation of the embodiment of FIG. 1;
FIG. 5 is a schematic view of the construction of the quick-release valve of the embodiment of FIG. 1;
FIG. 6 is a schematic diagram of the embodiment of FIG. 1;
in the figure: 1. the device comprises a box cover, a left air inlet, a right air inlet, an air outlet, a feedback port, an air channel block I, a box body, a filter valve, a lift arch throttle valve, a precision pressure regulating valve and a precision pressure regulating valve, 11, a bow-reducing throttle valve, 12, a pressure gauge, 13, a safety valve, 14, a quick-discharge valve, 15, a quick-discharge port, 16, a stop ball valve, 17, a test ball valve, 18, a mounting plate II and 19, and a silencer.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Examples
Referring to fig. 1 to 3, the embodiment comprises a box cover 1, a left air inlet 2, a right air inlet 3, an air outlet 4, an air passage block i 6, a box body 7, a filter valve 8, an ascending throttle valve 9, a precise pressure regulating valve 10, a descending throttle valve 11, a pressure gauge 12 and a safety valve 13;
the filter valve 8, the lifting arch throttle valve 9, the precise pressure regulating valve 10, the lifting arch throttle valve 11, the pressure gauge 12 and the safety valve 13 are in air connection through pipe joints, are fixed on the mounting plate I and are combined into a whole, and are called a pressure regulating unit, the pressure regulating unit is fixed on the box body 7 through bolts on the back mounting plate I, the pressure regulating unit is in air connection with the air outlet 4 on the air passage block I6 through an air passage pipe, and the left air inlet 2 and the right air inlet 3 are in air connection with the pressure regulating unit through air passage pipes;
be equipped with feedback mouth 5 on the gas circuit piece I6, be equipped with quick exhaust valve 14 in the box 7, quick exhaust valve 14 realizes air coupling through the gas circuit pipe that is equipped with stop ball valve 16 with gas outlet 4 on the gas circuit piece I6, quick exhaust valve 14 realizes air coupling through the gas circuit pipe with feedback mouth 5 on the gas circuit piece I6, feedback mouth 5 coupling hose is to pantograph carbon slide, and the combination becomes a whole, is called automatic bow unit that falls, the inside air flue or the air cavity that is equipped with of carbon slide, and during normal operating, the air flue is filled with compressed air.
In this embodiment, a test ball valve 17 is disposed on the connection pipe between the quick-release valve 14 and the feedback port 5 on the air path block i 6. The test ball valve 17 is arranged on the air path block I6.
In this embodiment, a mounting plate ii 18 is disposed in the case 7, and the quick-release valve 14 is fixed on the mounting plate ii 18 through a pipe joint.
In this embodiment, the quick discharge port 15 of the quick discharge valve 14 is provided with a muffler 19.
In this embodiment, the filter valve 8 and the precise pressure regulating valve 10 are fixed on the mounting plate i through a bracket.
In this embodiment, the pressure gauge 12 and the safety valve 13 are fixed on the mounting plate i through the air passage block ii.
In this embodiment, the case cover 1 and the case body 7 are welded by sheet metal parts, and are connected by bolts to form a box structure.
In this embodiment, the quick-release valve 14 includes an upper chamber 14-1 and a lower chamber 14-2, which are isolated by a diaphragm 14-3 and a spring 14-6, the diaphragm 14-3 has a small flow guiding hole 14-4 for balancing air pressure, the upper chamber 14-1 is connected with a feedback port on the air block i by an air channel pipe to realize air connection (also called ADD air channel, including a slide plate and an air pipe with a bow head), and the lower chamber 14-2 is connected with an air inlet 14-5 and isolated from the quick-release port 15 by the diaphragm 14-3.
A pantograph lifting process: compressed gas enters the main gas path of the pantograph and the lower cavity 14-2 of the quick-release valve, at this time, because the pressure of the upper cavity 14-1 is much smaller than that of the lower cavity 14-2, the diaphragm 14-3 will bulge upwards under the pressure of the lower cavity 14-2, the quick-release valve is instantly in an opening position, and the lower cavity 14-2 is connected with the quick-release port 15. Because of the presence of the deflector orifice 14-4 on the diaphragm 14-3, the air pressure in the upper chamber 14-1 will rise rapidly and equilibrate with the lower chamber 14-2 with the assistance of the spring 14-6. The diaphragm 14-3 will return to its original state and the quick release valve will be in the closed position (which is relatively quick) and the air bag will continue to inflate and the pantograph will be raised. Since the pressure contact area (A) of the upper quick release valve chamber 14-1 is greater than the pressure contact area (A-B) of the lower chamber 14-2, the pressure of the upper quick release valve chamber 14-1 against the diaphragm 14-3 will be greater than the pressure of the lower chamber 14-2. Thus, the quick-release valve membrane can seal the passage of the lower cavity 14-2 to the exhaust port, and the air tightness of the lower cavity 14-2 is well ensured, so that the normal operation of the pantograph is ensured.
Automatic pantograph dropping process: when the ADD path is damaged and the leak is greater than the supply to the pilot orifice, the pressure in the upper chamber 14-1 of the quick release valve begins to drop. When the pressure difference between the upper cavity and the lower cavity reaches a set value, the diaphragm 14-3 is raised, the quick release valve is in an opening position, compressed gas of a main gas path of the pantograph and the air bag is quickly discharged through the quick release port 15, and the pantograph is quickly lowered.
The embodiment provides an integrated automatic air valve box that falls bow function, will fall the bow device with the tradition pneumatic valve box ingenious combination, carry out box overall arrangement and pipeline design again, form novel take automatic air valve box that falls bow function to replace original air valve box and automatic bow device that falls. The novel air valve box is an integrated device which uses compressed gas as a working medium, controls the pantograph to lift and lower the pantograph, adjusts the contact pressure and automatically lowers the pantograph for monitoring.
Working principle:
1) Normal lifting bow
The rolling stock gives out a lifting instruction, and compressed air enters the air valve box from the left air inlet 2 or the right air inlet 3 (the left side and the right side can be selected according to the actual pipeline arrangement of the pantograph). Compressed air sequentially flows through a pressure regulating unit consisting of a filter valve 8, an ascending throttle valve 9, a precise pressure regulating valve 10, a descending throttle valve 11 and a safety valve 13, then flows into an automatic descending unit, rapidly establishes the air pressure balance of the upper cavity and the lower cavity of a quick-release valve 14, and enables the compressed air to be connected to a pantograph air bag from an air outlet 4, so that normal ascending of the pantograph is realized. The lifting speed can be regulated by a lifting throttle valve 9, a safety valve 13 is arranged in the pressure regulating unit to play a role in limiting pressure and protecting, and when the air circuit pressure is greater than the set value of the safety valve 13, the safety valve 13 is started to release pressure so as to protect the air circuit safety of the pantograph. The pressure regulating unit is also provided with a pressure gauge 12 which can observe the pressure value of the air path.
2) Normal bow lowering
The rolling stock gives out a bow lowering instruction, and compressed air in the pantograph air bag enters the air valve box through the air outlet 4. The compressed air is discharged out of the air valve box from the left air inlet 2 or the right air inlet 3 through the automatic bow lowering unit and the pressure regulating unit in the reverse direction of the normal bow raising air path, so that the normal bow lowering of the pantograph is realized, and the bow lowering speed can be regulated by the bow lowering throttle valve 11.
3) Automatic bow lowering device
When the air valve box with the automatic bow lowering function is connected to the pantograph, besides the hose connected to the air bag of the pantograph from the air outlet 4, the hose is connected to the carbon slide plate of the pantograph from the feedback port 5, the carbon slide plate is different from the carbon slide plate of the pantograph without the automatic bow lowering device in type, an air passage or an air cavity is formed in the carbon slide plate, and compressed air is filled in the air passage during normal operation.
In order to protect the contact wire and the pantograph carbon slide plate from excessive wear after reaching the minimum wear limit, the air valve box is equipped with an automatic pantograph lowering unit. If the compressed gas leaks due to any damage (breakage or excessive wear) to the carbon slide plate or the monitoring pipeline, the pressure of the monitoring pipeline is reduced, and the monitoring pipeline is connected with the quick-release valve 14 through the feedback port 5; immediately trigger quick-release valve 14 and start, the compressed air in the pantograph gasbag gets into the gas valve box from gas outlet 4, directly discharges to the atmosphere (the gas vent is provided with muffler 19) through quick-release port 15 of quick-release valve 14 fast to realize the automatic bow that falls of pantograph.
The function can also be cut off through the stop ball valve 16 in the box body, and after the stop ball valve 16 is closed, the automatic bow lowering unit is disabled, so that the automatic bow lowering monitoring of the pantograph is closed. After the air valve box is arranged on the pantograph, the automatic pantograph lowering function can be tested through the test ball valve 17. After the pantograph is assembled, the test ball valve 17 is opened, the leakage of the carbon slide plate is simulated, the pressure of the pipeline is reduced, the quick-release valve 14 is triggered to start, and the automatic pantograph falling is realized.

Claims (8)

1. The air valve box integrating the automatic bow lowering function comprises a box cover, a left air inlet, a right air inlet, an air outlet, an air channel block I, a box body, a filter valve, a bow raising throttle valve, a pressure regulating valve, a bow lowering throttle valve, a pressure gauge and a safety valve; the filter valve, the lifting arch throttle valve, the pressure regulating valve, the lowering arch throttle valve, the pressure gauge and the safety valve are mutually connected through pipe joints, are fixed on the mounting plate I and are combined into a whole, and are called a pressure regulating unit, the pressure regulating unit is fixed on the box body, the pressure regulating unit is connected with an air outlet on the air channel block I through an air channel pipe, and the left air inlet and the right air inlet are connected with the pressure regulating unit through the air channel pipe; the method is characterized in that: the automatic pantograph control device comprises a box body, a gas path block I, a gas path pipe, a gas outlet, a flexible pipe, a pantograph air bag, a gas path pipe and a feedback port, wherein the gas path block I is provided with the feedback port;
the quick-release valve comprises an upper cavity and a lower cavity, the upper cavity is isolated from the lower cavity through a diaphragm and a spring, a small flow guide hole is formed in the diaphragm, the upper cavity is connected with a feedback port on the air passage block I through an air passage pipe, and the lower cavity is connected with an air inlet and isolated from the quick-release port through the diaphragm.
2. The integrated automatic bow reducing air valve box according to claim 1, wherein: and a test valve is arranged on a connecting pipeline of the feedback port on the quick exhaust valve and the air path block I.
3. The integrated automatic bow reducing air valve box according to claim 2, wherein: and the test valve is arranged on the air path block I.
4. The air valve box integrated with automatic bow lowering function according to claim 1, 2 or 3, wherein: the quick-release valve is characterized in that a mounting plate II is arranged in the box body, and the quick-release valve is fixed on the mounting plate II through a pipe joint.
5. The air valve box integrated with automatic bow lowering function according to claim 1, 2 or 3, wherein: the quick discharge port of the quick discharge valve is equipped with a muffler.
6. The air valve box integrated with automatic bow lowering function according to claim 1, 2 or 3, wherein: the filter valve and the precise pressure regulating valve are fixed on the mounting plate I through a bracket.
7. The air valve box integrated with automatic bow lowering function according to claim 1, 2 or 3, wherein: the pressure gauge and the safety valve are fixed on the mounting plate I through the air passage block II.
8. The air valve box integrated with automatic bow lowering function according to claim 1, 2 or 3, wherein: the box cover and the box body are formed by welding sheet metal parts, and the box cover and the box body are connected through connecting pieces to form a box-type structure.
CN202010275950.0A 2020-04-09 2020-04-09 Air valve box integrated with automatic bow lowering function Active CN111347882B (en)

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Application Number Priority Date Filing Date Title
CN202010275950.0A CN111347882B (en) 2020-04-09 2020-04-09 Air valve box integrated with automatic bow lowering function

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Application Number Priority Date Filing Date Title
CN202010275950.0A CN111347882B (en) 2020-04-09 2020-04-09 Air valve box integrated with automatic bow lowering function

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CN111347882A CN111347882A (en) 2020-06-30
CN111347882B true CN111347882B (en) 2023-08-11

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114278860B (en) * 2022-01-18 2023-10-13 天津市长龙宏业燃气设备有限公司 Control method capable of preventing leakage of liquefied gas cylinder and filling system

Citations (7)

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Publication number Priority date Publication date Assignee Title
JP2007189754A (en) * 2006-01-11 2007-07-26 Toyo Electric Mfg Co Ltd Pantagraph for vehicle
CN101875313A (en) * 2009-05-01 2010-11-03 丛洋 Wind power motor vehicle
CN104590032A (en) * 2014-11-28 2015-05-06 南车株洲电力机车有限公司 Electric locomotive and controlling device and method for pantograph type current collector
CN104670027A (en) * 2015-03-16 2015-06-03 南车株洲电力机车有限公司 Locomotive pantograph-catenary pressure regulation system
CN106274500A (en) * 2016-11-08 2017-01-04 宜兴市溢洋墨根材料有限公司 Speed motor train unit pantograph deicing carbon slipper
CN208149090U (en) * 2017-12-11 2018-11-27 谢爱华 A kind of drop after motorcycle pantograph rising bow wind pressure reduces bends protective device
CN211969183U (en) * 2020-04-09 2020-11-20 株洲万新轨道电气科技有限公司 Integrated automatic air valve box of bow function that falls

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217429A1 (en) * 2013-09-02 2015-03-05 Siemens Aktiengesellschaft Compressed air system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007189754A (en) * 2006-01-11 2007-07-26 Toyo Electric Mfg Co Ltd Pantagraph for vehicle
CN101875313A (en) * 2009-05-01 2010-11-03 丛洋 Wind power motor vehicle
CN104590032A (en) * 2014-11-28 2015-05-06 南车株洲电力机车有限公司 Electric locomotive and controlling device and method for pantograph type current collector
CN104670027A (en) * 2015-03-16 2015-06-03 南车株洲电力机车有限公司 Locomotive pantograph-catenary pressure regulation system
CN106274500A (en) * 2016-11-08 2017-01-04 宜兴市溢洋墨根材料有限公司 Speed motor train unit pantograph deicing carbon slipper
CN208149090U (en) * 2017-12-11 2018-11-27 谢爱华 A kind of drop after motorcycle pantograph rising bow wind pressure reduces bends protective device
CN211969183U (en) * 2020-04-09 2020-11-20 株洲万新轨道电气科技有限公司 Integrated automatic air valve box of bow function that falls

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