CN106671998A - Grain hopper car and control system thereof - Google Patents
Grain hopper car and control system thereof Download PDFInfo
- Publication number
- CN106671998A CN106671998A CN201611005935.4A CN201611005935A CN106671998A CN 106671998 A CN106671998 A CN 106671998A CN 201611005935 A CN201611005935 A CN 201611005935A CN 106671998 A CN106671998 A CN 106671998A
- Authority
- CN
- China
- Prior art keywords
- way
- valve
- connection
- reservoir
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D7/00—Hopper cars
- B61D7/02—Hopper cars with discharge openings in the bottoms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
- E05Y2900/531—Doors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
- E05Y2900/531—Doors
- E05Y2900/532—Back doors or end doors
Abstract
The invention belongs to the technical field of the rail wagon, and particularly relates to a grain hopper car and a control system thereof. The grain hopper car comprises a hopper car box. The top of the hopper car box is provided with a small top cover and a large top cover respectively. The small top cover and the large top cover are respectively connected with a top cover open-close air cylinder installed at two sides of the hopper car box by a long shaft. The end part of the hopper car box is provided with an end door. The end door is connected with an end door connecting rod. The end door connecting rod is connected with an end door transmission shaft. The end door transmission shaft is connected with an end door open-close air cylinder. The bottom of the hopper car box is provided with a bottom door I and a bottom door II. The bottom door I and the bottom door II are respectively connected with a bottom door open-close air cylinder I and a bottom door open-close air cylinder II by a bottom door connecting rod. Each of two sides of the grain hopper car is provided with a control box. The respective or linked control of six power sources in the open-close system can be realized at any one side of the hopper box by an operator through the connection of a pipeline and a flow valve.
Description
Technical field
The invention belongs to railway freight-car technical field, specifically a kind of foodstuff hopper wagon and its control system.
Background technology
My company designs the container funnel of a shipment grain for user, and the funnel is required：Loading hatch has two, loading
Lid adopts pneumatic control, and two loading lids can be with individually operated or combined operation；Discharging hatch has four, and dump door is adopted
Pneumatic control, the dump door of funnel case end two need to be opened and closed simultaneously, and the dump door of the discharging hatch of funnel case bottom two needs each list
Solely control；All control valves need centralized arrangement together, and can realize all material of container funnel in the both sides of funnel case
The operation of mouth switching mechanism；The all mechanism control systems of funnel case need to be arranged on funnel case, can be with the lifting of funnel case
Vehicle is not affected to use.Both at home and abroad container has the hopper container of similar structures generally using opening and closing handling door manually, and
Do not possess it is this can simultaneously six switching mechanisms of centralized Control control system.Bottom door opening and closing mechanism and top on foodstuff hopper wagon
Generally in the form of opening and closing manually, other hopper wagons mostly also are lid switching mechanism using the discharging hatch opening and closing mode of pneumatic control
Piece power transmission shaft, power source, a manipulation valve.
The content of the invention
The present invention is in order to solve the above problems, there is provided a kind of foodstuff hopper wagon and its control system.
The present invention takes technical scheme below：A kind of foodstuff hopper wagon, including funnel railway carriage, hopper wagon box top sets respectively
There are little top cover and big top cover, little top cover and big top cover are opened and closed reservoir with the top cover for being arranged on funnel railway carriage both sides respectively by major axis
Connection；Funnel railway carriage end is provided with end door, and end door is connected with end door connecting rod, and end door connecting rod is connected with end door power transmission shaft, and end door is passed
Moving axis is connected with end door opening and closing reservoir；Hopper wagon bottom portion is provided with bottom door I and bottom door II, and bottom door I and bottom door II is connected by bottom door
Bar is connected respectively with bottom door opening and closing reservoir I and bottom door opening and closing reservoir II.
A kind of control system of foodstuff hopper wagon, including end door opening and closing reservoir, bottom door opening and closing reservoir I, bottom door opening and closing reservoir
II, chain reservoir and top cover opening and closing reservoir, top cover opening and closing reservoir controls valve aI and 3 position-5 way with 3 position-5 way in parallel respectively
Control valve aII connections, end door opening and closing reservoir connects respectively with 3 position-5 way control valve bI in parallel and 3 position-5 way control valve bII
Connect, bottom door opening and closing reservoir I is connected respectively with 3 position-5 way control valve cI in parallel and 3 position-5 way control valve cII, bottom door opening and closing
Reservoir II is connected respectively with 3 position-5 way control valve dI in parallel and 3 position-5 way control valve dII, chain reservoir respectively with it is in parallel
3 position-5 way control valve eI and 3 position-5 way control valve eII connection, above-mentioned all of 3 position-5 way control valve is by unidirectional
Valve and excessively elimination are connected with main blast pipe.
Described top cover opening and closing reservoir air inlet controls respectively valve aI's and 3 position-5 way control valve aII with 3 position-5 way
A mouths connect, and top cover opening and closing reservoir return air inlet controls respectively valve aI with 3 position-5 way and the B mouths of 3 position-5 way control valve aII are connected,
3 position-5 way controls valve aI and the P mouths of 3 position-5 way control valve aII are connected with main blast pipe.
Described end door opening and closing reservoir air inlet controls valve bI with 3 position-5 way respectively and 3 position-5 way controls the A mouths of valve bII
Connection, end door opening and closing reservoir return air inlet controls respectively valve bI with 3 position-5 way and the B mouths of 3 position-5 way control valve bII are connected, and three
The P mouths of the logical control valve bI in position five and 3 position-5 way control valve bII are connected with main blast pipe.
Bottom door opening and closing reservoir I air inlets control respectively valve cI with 3 position-5 way and the A mouths of 3 position-5 way control valve cII connect
Connect, bottom door opening and closing reservoir I return air inlets control respectively valve cI with 3 position-5 way and the B mouths of 3 position-5 way control valve cII are connected, three
The P mouths of five logical control valve cI and 3 position-5 way control valve cII are connected with main blast pipe.
Bottom door opening and closing reservoir II air inlets control valve dI with 3 position-5 way respectively and 3 position-5 way controls the A mouths of valve dII
Connection, bottom door opening and closing reservoir II return air inlets control respectively valve dI with 3 position-5 way and the B mouths of 3 position-5 way control valve dII are connected,
3 position-5 way controls valve dI and the P mouths of 3 position-5 way control valve dII are connected with main blast pipe.
Chain reservoir air inlet controls respectively valve eI with 3 position-5 way and the A mouths of 3 position-5 way control valve eII are connected, even
Lock reservoir return air inlet controls valve eI with 3 position-5 way respectively and the B mouths of 3 position-5 way control valve eII are connected, 3 position-5 way control valve
The P mouths of eI and 3 position-5 way control valve eII are connected with main blast pipe.
Compared with prior art, the invention has the advantages that：
1st, a control cabinet is respectively arranged in foodstuff hopper wagon both sides, operating personnel is realized by the connection of pipeline and flow valve
In the split difference or coordinated signals for closing six power sources in system in any side of funnel case.
2nd, concentrated setting has the spare and accessory parts such as six control valves and filter in control cabinet, improve switching mechanism control can
Operability, improve the reliability of control system and the cleanliness factor of pressure air, it is ensured that the reliability of power gas control and use
Life-span.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is foodstuff hopper wagon structural representation；
Fig. 3 is foodstuff hopper wagon end door structural representation；
Fig. 4 is the bottom door I of foodstuff hopper wagon and bottom door II structural representations；
1- top covers opening and closing reservoir in figure, 2- end doors opening and closing reservoir, 3- bottom door opening and closing reservoir I, 4- bottom door opening and closing reservoir II, 5- is chain
Reservoir, 6- 3 position-5 ways control valve aI, 7- 3 position-5 ways control valve aII, 8- 3 position-5 ways control valve bI, the control of 9- 3 position-5 ways
Valve bII, 10- 3 position-5 way controls valve cI, 11- 3 position-5 ways control valve cII, 12- 3 position-5 ways control valve dI, 13- tri- five
Logical control valve dII, 14- 3 position-5 ways control valve eI, 15- 3 position-5 ways control valve eII, the main blast pipes of 16-, 17- funnel railway carriages,
The little top covers of 18-, the big top covers of 19-, 20- bottom door I, 21- bottom door II.
Specific embodiment
As shown in Figure 2,3, 4, the foodstuff hopper wagon of our company's design, including funnel railway carriage 17, the top point of funnel railway carriage 17
Be not provided with little top cover 18 and big top cover 19, little top cover 18 and big top cover 19 by major axis respectively be arranged on the both sides of funnel railway carriage 17
Top cover opening and closing reservoir 1 connect；The end of funnel railway carriage 17 is provided with end door 2.1, and end door 2.1 is connected with end door connecting rod 2.2, and end door connects
Bar 2.2 is connected with end door power transmission shaft 2.3, and end door power transmission shaft 2.3 is connected with end door opening and closing reservoir 2；The bottom of funnel railway carriage 17 is provided with
Bottom door I20 and bottom door II21, bottom door I20 and bottom door II21 by bottom door connecting rod respectively with bottom door opening and closing reservoir I3 and bottom door opening and closing
Reservoir II4 connects.
The application is opened to control said structure, closure, there is provided food hopper vehicle control.
As shown in figure 1, food hopper vehicle control according to claim 1, described top cover opening and closing reservoir 1 enters
Air port controls valve aI6 with 3 position-5 way respectively and the A mouths of 3 position-5 way control valve aII7 are connected, the top cover opening and closing return air of reservoir 1
Mouth controls valve aI6 with 3 position-5 way respectively and the B mouths of 3 position-5 way control valve aII7 are connected, 3 position-5 way control valve aI6 and three
The P mouths of the logical control valve aII7 in position five are connected with main blast pipe 16.
Described end door opening and closing reservoir 2 air inlet controls respectively valve bI8 and 3 position-5 way control valve with 3 position-5 way
The A mouths connection of bII9, end door opening and closing reservoir 2 return air inlet controls respectively valve bI8 and 3 position-5 way control valve bII9 with 3 position-5 way
B mouths connection, 3 position-5 way control valve bI8 and 3 position-5 way control valve bII9 P mouths be connected with main blast pipe 16.
Bottom door opening and closing reservoir I3 air inlets control respectively valve cI10's and 3 position-5 way control valve cII11 with 3 position-5 way
A mouths connect, and bottom door opening and closing reservoir I3 return air inlets control valve cI10 with 3 position-5 way respectively and 3 position-5 way controls the B of valve cII11
The P mouths of mouth connection, 3 position-5 way control valve cI10 and 3 position-5 way control valve cII11 are connected with main blast pipe 16.
Bottom door opening and closing reservoir II4 air inlets control respectively valve dI12 and 3 position-5 way control valve dII13 with 3 position-5 way
A mouths connection, bottom door opening and closing reservoir II4 return air inlets respectively with 3 position-5 way control valve dI12 and 3 position-5 way control valve dII13
B mouths connection, 3 position-5 way control valve dI12 and 3 position-5 way control valve dII13 P mouths be connected with main blast pipe 16.
The air inlet of chain reservoir 5 controls respectively valve eI14 with 3 position-5 way and the A mouths of 3 position-5 way control valve eII15 connect
Connect, the return air inlet of chain reservoir 5 controls respectively valve eI14 with 3 position-5 way and the B mouths of 3 position-5 way control valve eII15 are connected, three
The P mouths of five logical control valve eI14 and 3 position-5 way control valve eII15 are connected with main blast pipe 16.
The main blast pipe of control system employs 3/4 inch standard for convenience of being connected with existing locomotive or ground air feed system
Flexible hose interface, at the same using can air-exhaust type angle cock and 3/4 inch of stainless steel pipeline as main blast pipe 16, remaining control
Tubulation road is formed Pipe bundle structure and is connected with all size ready-packaged joint using nylon hose, so as to reduce pipe joint quantity, is carried
The high entirely sealing of control piper, reliability and convertibility.
Simultaneously in control cabinet, control cabinet is designed as case lid and case to the set-up of control system of six switching mechanisms of centralized Control
Bottom structure.Bottom is fixed on for convenience on the support of funnel case, leaves four position of mounting hole, and is welded using 2mm plates beading
Structure improves bottom intensity.Case lid adopts deeper casing form as the fixed position of the main control units such as control valve, in its peace
By five control valves, an intake valve, an air bleeding valve, check valve, a filter and a connecting line and fast on dress face
Joint is fixed on relevant position.Control cabinet when state is installed and used, with case lock pinned, it is to avoid accessory is damaged by case lid and bottom
And loss.According to pneumatic control principle, five control valves control respectively top cover cylinder, linkage air cylinder, end door cylinder, bottom door cylinder
Two-way intake and exhaust, and realize the opening and closing function of respective mechanism.When the pressure air of main blast pipe passes through check valve, filter just
Five control valves are connected, control valve is in close stance, when needing to open respective doors, have made accordingly to control valve in open position,
Then pressure air Jing controls valve reaches cylinder bottom, while cylinder front end leads to air, cylinder piston releases the opening for realizing door.Instead
It, when control valve is in close stance, cylinder bottom leads to air, and pressure air is entered in cylinder front end, realizes the closing of door.To guarantee top
The synchronism of lid cylinder moving, in circuit design, blast pipe design in the central authorities of two top cover cylinder connecting lines, in addition two
Individual cylinder has additional flow control valve, further controls the synchronism of cylinder, realizes the steady opening and closing function of top cover.
Claims (6)
1. a kind of foodstuff hopper wagon, it is characterised in that：Including funnel railway carriage（17）, funnel railway carriage（17）Top is respectively equipped with little top
Lid（18）With big top cover（19）, little top cover（18）With big top cover（19）By major axis respectively be arranged on funnel railway carriage（17）Both sides
Top cover opening and closing reservoir（1）Connection；Funnel railway carriage（17）End is provided with end door（2.1）, end door（2.1）With end door connecting rod（2.2）
Connection, end door connecting rod（2.2）With end door power transmission shaft（2.3）Connection, end door power transmission shaft（2.3）Reservoir is opened and closed with end door（2）Connection；
Funnel railway carriage（17）Bottom is provided with bottom door I（20）With bottom door II（21）, bottom door I（20）With bottom door II（21）By bottom door connecting rod point
Not with bottom door opening and closing reservoir I（3）With bottom door opening and closing reservoir II（4）Connection.
2. the control system of a kind of control foodstuff hopper wagon as claimed in claim 1, it is characterised in that:Wind is opened and closed including end door
Cylinder（2）, bottom door opening and closing reservoir I（3）, bottom door opening and closing reservoir II（4）, chain reservoir（5）Reservoir is opened and closed with top cover（1）, top cover opens
Close reservoir（1）Respectively with 3 position-5 way control valve aI in parallel（6）Valve aII is controlled with 3 position-5 way（7）Connection, end door opening and closing wind
Cylinder（2）Respectively with 3 position-5 way control valve bI in parallel（8）Valve bII is controlled with 3 position-5 way（9）Connection, bottom door opening and closing reservoir I
（3）Respectively with 3 position-5 way control valve cI in parallel（10）Valve cII is controlled with 3 position-5 way（11）Connection, bottom door opening and closing reservoir II
（4）Respectively with 3 position-5 way control valve dI in parallel（12）Valve dII is controlled with 3 position-5 way（13）Connection, chain reservoir（5）Point
Not with 3 position-5 way control valve eI in parallel（14）Valve eII is controlled with 3 position-5 way（15）Connection, above-mentioned all of 3 position-5 way
Control valve by check valve and crosses elimination and main blast pipe（16）Connection.
3. food hopper vehicle control according to claim 2, it is characterised in that:Described top cover opening and closing reservoir（1）
Air inlet controls valve aI with 3 position-5 way respectively（6）And 3 position-5 way control valve aII（7）A mouths connection, top cover opening and closing reservoir
（1）Return air inlet controls valve aI with 3 position-5 way respectively（6）Valve aII is controlled with 3 position-5 way（7）B mouths connection, 3 position-5 way control
Valve aI processed（6）Valve aII is controlled with 3 position-5 way（7）P mouths and main blast pipe（16）Connection.
4. the control system of foodstuff hopper wagon according to claim 3, it is characterised in that:Described end door opening and closing reservoir
（2）Air inlet controls valve bI with 3 position-5 way respectively（8）And 3 position-5 way control valve bII（9）A mouths connection, end door opening and closing
Reservoir（2）Return air inlet controls valve bI with 3 position-5 way respectively（8）Valve bII is controlled with 3 position-5 way（9）B mouths connection, three five
Logical control valve bI（8）Valve bII is controlled with 3 position-5 way（9）P mouths and main blast pipe（16）Connection.
5. food hopper vehicle control according to claim 4, it is characterised in that:Bottom door opening and closing reservoir I（3）Air inlet
Control valve cI with 3 position-5 way respectively（10）And 3 position-5 way control valve cII（11）A mouths connection, bottom door opening and closing reservoir I（3）
Return air inlet controls valve cI with 3 position-5 way respectively（10）Valve cII is controlled with 3 position-5 way（11）B mouths connection, 3 position-5 way control
Valve cI（10）Valve cII is controlled with 3 position-5 way（11）P mouths and main blast pipe（16）Connection.
6. food hopper vehicle control according to claim 5, it is characterised in that:Bottom door opening and closing reservoir II（4）Air intake
Mouth controls valve dI with 3 position-5 way respectively（12）And 3 position-5 way control valve dII（13）A mouths connection, bottom door opening and closing reservoir II
（4）Return air inlet controls valve dI with 3 position-5 way respectively（12）Valve dII is controlled with 3 position-5 way（13）B mouths connection, 3 position-5 way
Control valve dI（12）Valve dII is controlled with 3 position-5 way（13）P mouths and main blast pipe（16）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005935.4A CN106671998A (en) | 2016-11-16 | 2016-11-16 | Grain hopper car and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005935.4A CN106671998A (en) | 2016-11-16 | 2016-11-16 | Grain hopper car and control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106671998A true CN106671998A (en) | 2017-05-17 |
Family
ID=58839441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611005935.4A Pending CN106671998A (en) | 2016-11-16 | 2016-11-16 | Grain hopper car and control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106671998A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002572A (en) * | 2021-03-22 | 2021-06-22 | 中车太原机车车辆有限公司 | Long-range wireless remote control switching system of railway ore hopper car top cap and bottom door |
| CN113002571A (en) * | 2021-03-19 | 2021-06-22 | 中车太原机车车辆有限公司 | Pneumatic opening and closing system of ore hopper car |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696986B1 (en) * | 1992-10-21 | 1994-12-30 | Orval Ateliers | Railway vehicle and hatch unloading installation for such a vehicle. |
| CN102536660A (en) * | 2010-11-26 | 2012-07-04 | 维斯塔斯风力系统有限公司 | Wind turbine with hydraulic blade pitch system |
| CN102529993A (en) * | 2012-01-04 | 2012-07-04 | 南车长江车辆有限公司 | Ballast discharging mechanism control system for ballast discharging hopper wagon |
| CN102529994A (en) * | 2012-01-10 | 2012-07-04 | 南车长江车辆有限公司 | Bottom door opening and closing air control system for railroad hopper car |
| CN104879012A (en) * | 2015-06-05 | 2015-09-02 | 太原轨道交通装备有限责任公司 | Rail wagon end door opening and closing device |
| CN205168495U (en) * | 2015-10-28 | 2016-04-20 | 太原轨道交通装备有限责任公司 | Multipurpose grain funnel container car |
-
2016
- 2016-11-16 CN CN201611005935.4A patent/CN106671998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696986B1 (en) * | 1992-10-21 | 1994-12-30 | Orval Ateliers | Railway vehicle and hatch unloading installation for such a vehicle. |
| CN102536660A (en) * | 2010-11-26 | 2012-07-04 | 维斯塔斯风力系统有限公司 | Wind turbine with hydraulic blade pitch system |
| CN102529993A (en) * | 2012-01-04 | 2012-07-04 | 南车长江车辆有限公司 | Ballast discharging mechanism control system for ballast discharging hopper wagon |
| CN102529994A (en) * | 2012-01-10 | 2012-07-04 | 南车长江车辆有限公司 | Bottom door opening and closing air control system for railroad hopper car |
| CN104879012A (en) * | 2015-06-05 | 2015-09-02 | 太原轨道交通装备有限责任公司 | Rail wagon end door opening and closing device |
| CN205168495U (en) * | 2015-10-28 | 2016-04-20 | 太原轨道交通装备有限责任公司 | Multipurpose grain funnel container car |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002571A (en) * | 2021-03-19 | 2021-06-22 | 中车太原机车车辆有限公司 | Pneumatic opening and closing system of ore hopper car |
| CN113002572A (en) * | 2021-03-22 | 2021-06-22 | 中车太原机车车辆有限公司 | Long-range wireless remote control switching system of railway ore hopper car top cap and bottom door |
| CN113002572B (en) * | 2021-03-22 | 2022-10-25 | 中车太原机车车辆有限公司 | Long-range wireless remote control switching system of railway ore hopper car top cap and bottom door |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170828 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Applicant after: CHINA RAILWAY CORPORATION Applicant after: CRRC TAIYUAN CO., LTD. Address before: 030009 No. 10 Jiefang North Road, Shanxi, Taiyuan Applicant before: CRRC TAIYUAN CO., LTD. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |