CN105172810A - Railway vehicle and broad-flat type hood opening and closing mechanism - Google Patents
Railway vehicle and broad-flat type hood opening and closing mechanism Download PDFInfo
- Publication number
- CN105172810A CN105172810A CN201510613106.3A CN201510613106A CN105172810A CN 105172810 A CN105172810 A CN 105172810A CN 201510613106 A CN201510613106 A CN 201510613106A CN 105172810 A CN105172810 A CN 105172810A
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- China
- Prior art keywords
- closing mechanism
- wing
- opening
- hood opening
- connecting rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a broad-flat type hood opening and closing mechanism which comprises an active driving mechanism and a slave driving mechanism, wherein the active driving mechanism is provided with a horizontal frame, an opening and closing air cylinder, a connecting base, connecting rods and mounting wings; the connecting base is movably mounted on the sliding rail of the horizontal frame, the other end of the connecting base is respectively connected with a pair of connecting rods, and the other ends of the connecting rods are respectively connected with a group of mounting wings; a group of opening and closing railways is arranged under of the mounting wings; the slave driving mechanism is provided with a hanger bracket and a group of mounting ailerons connected to the hanger bracket; the mounting wings are crossed, and the rear ends of the mounting wings are respectively hinged with a group of mounting wing shafts on the horizontal frame; the mounting ailerons are crossed, and the rear ends of the mounting ailerons are respectively hinged with a group of mounting aileron shafts on the hanger bracket. The hood opening and closing mechanism has the advantages of being reliable in structure, stable in running and small in occupied space and is particularly suitable for a motor train unit of which the front end of a cab is broad and flat. The invention further discloses a railway vehicle provided with the hood opening and closing mechanism.
Description
Technical field
The present invention relates to the hood opening-closing mechanism of guideway vehicle technical field, particularly guideway vehicle.The invention still further relates to the guideway vehicle being provided with described hood opening-closing mechanism.
Background technology
At present, the motor train unit of guideway vehicle are for the consideration hung together, all being provided with in headstock front portion can the head-shield of symmetrical opening and closing, connect to facilitate hitch, left front cover and the right front cover of head-shield are driven by hood opening-closing mechanism, consistent with the streamlined contour of car body head during closedown, can reduce windage, in opening procedure, other parts in car be avoided.
As the utility model patent specification sheets that Authorization Notice No. is CN201206386Y, it discloses a kind of switching mechanism for front cover of guideway vehicle, at least comprise an active driving mechanisms, active driving mechanisms has a horizontal frame, opening and closing cylinder, Connection Block, connecting rod and the installation wing, wherein, the driveshaft end of opening and closing cylinder is fixed on Connection Block, and the both sides of Connection Block are socketed in the slide rail of horizontal frame respectively by linear bearing; The other end of Connection Block connects pair of links respectively, and the other end of connecting rod connects one group respectively and installs the wing; Horizontal frame is fixed in the one end of installing the wing, and the other end is connected to left and right two parts of car body front shroud; The below of installing the wing is provided with one group of opening and closing track, is respectively arranged with one group of pulley be supported on opening and closing track at the position near the connection front shroud installing the wing; Also comprise a driven driver train, driven driver train has a vertical Connection Block, one group of installation aileron, wherein, one vertical end of vertical Connection Block is fixed on horizontal frame, another vertical end is connected to installation aileron, left and right two parts that aileron is connected to car body front shroud are installed, are respectively arranged with universal-joint at the two ends of connecting rod.
Although the opening and closing cylinder of this hood opening-closing mechanism can drive left front cover and right front cover to realize opening and closing function by Connection Block, connecting rod, the installation wing and installation aileron.But its rear end of installing the wing and installation aileron is articulated with same rotating shaft.Because motor train unit front-end architecture is increasing, such as front end increases endergonic structure, anti-creep structure etc., cause front end switching mechanism that the significantly reduction taken up room is set, above-mentioned hood opening-closing mechanism can be difficult to avoid miscellaneous part in car in opening and closing process, its structure and unfolding mode are not suitable for the flat wide guideway vehicle of driver's cab front end moulding, and in opening and closing process, synchronism and the stability of installing the wing and installation aileron have the space promoted further.
Therefore, how being optimized design to hood opening-closing mechanism, is those skilled in the art's technical issues that need to address.
Summary of the invention
The first object of the present invention is to provide a kind of plat wide type hood opening-closing mechanism.This hood opening-closing mechanism structure is reliable, stable, it is little to take up room, and is particularly useful for the comparatively flat wide motor train unit of driver's cab front end moulding.
The second object of the present invention is to provide a kind of guideway vehicle being provided with described hood opening-closing mechanism.
For achieving the above object, the invention provides a kind of plat wide type hood opening-closing mechanism, comprising:
Active driving mechanisms, has horizontal frame, opening and closing cylinder, Connection Block, connecting rod and the installation wing;
The telescopic end of described opening and closing cylinder connects described Connection Block, and described Connection Block is installed on the slide rail of described horizontal frame movably;
The other end of described Connection Block connects pair of links respectively, and the other end of described connecting rod connects one group respectively and installs the wing; The below of the described installation wing is provided with one group of opening and closing track;
Driven driver train, has suspension holdfast and is connected to one group of described suspension holdfast and install aileron;
The described installation wing intersects, and its rear end is installed wing axle with on described horizontal frame group respectively and is hinged; Described installation aileron intersects, and its rear end is installed aileron axle with on described suspension holdfast group respectively and is hinged.
Preferably, the rear end of the described installation wing is provided with " C " shape bayonet socket, and is hinged in the mode of clamping by described bayonet socket and described installation wing axle; The rear end of described installation aileron is provided with " C " shape bayonet socket, and is hinged in the mode of clamping by described bayonet socket and described installation aileron axle.
Preferably, the described installation wing and installation aileron are all " Z " font at obtuse angle in two bent angle positions, and its bent angle position near rear end is provided with " U " shape groove.
Preferably, the described installation wing is double-decker, and it is installed wing plate and is provided with installation wing stiffening plate, is connected between the two by gusset.
Preferably, described connecting rod with the hinge lower end that is hinged of the wing be installed be provided with slide block, the described installation wing by described slider support in described opening and closing track.
Preferably, described connecting rod is hinged at the midway location of the oblique part of the described installation wing with the installation wing.
Preferably, in off position, the left connecting rod of described connecting rod and right connecting rod parallel, or the spacing between described left connecting rod and right connecting rod front end is less than the spacing between rear end.
Preferably, described installation aileron axle is installed on described suspension holdfast top by horizontal supporting plate.
Preferably, described suspension holdfast is door shaped stent, and its both sides are trapezoidal respectively to outer lug.
For realizing above-mentioned second object, the present invention also provides a kind of guideway vehicle, comprises car body and headstock, and the operator's compartment front end of described headstock is provided with head-shield and hood opening-closing mechanism, and described hood opening-closing mechanism is the plat wide type hood opening-closing mechanism described in above-mentioned any one.
The present invention has done further improvement on the basis of existing technology, it is installed the wing and is no longer articulated with same rotating shaft, but arranged crosswise, and be hinged with corresponding installation wing axle respectively, correspondingly, aileron is installed and is also no longer articulated with same rotating shaft, be also arranged crosswise, and be hinged with corresponding installation aileron axle respectively.Like this, by adopting the structure of S. A. arranged crosswise, achieving hood opening-closing mechanism uses simple Unscrew principle to open comparatively complicated railway vehicle cab head-shield mechanism, its structural safety is reliable, expand direct Unscrew formula switching mechanism to the Applicable scope of driver's cab moulding, can ensure the wing is installed and the synchronism of aileron in opening and closing process and stability are installed, and it is little to take up room, easily avoid miscellaneous part in car, interference is there will not be in opening and closing process, the moulding changeable to driver's cab has stronger adaptive capacity, be particularly useful for the comparatively flat wide motor train unit of driver's cab front end moulding.
Guideway vehicle provided by the present invention is provided with above-mentioned hood opening-closing mechanism, and because described hood opening-closing mechanism has above-mentioned technique effect, the guideway vehicle being provided with this hood opening-closing mechanism also should have corresponding technique effect.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of a kind of detailed description of the invention of plat wide type hood opening-closing mechanism provided by the present invention;
The schematic diagram that Fig. 2 is connected with head-shield for the hood opening-closing mechanism of plat wide type shown in Fig. 1;
Fig. 3 is the lateral plan of the hood opening-closing mechanism of plat wide type shown in Fig. 1;
Fig. 4 is the birds-eye view of Fig. 3;
Fig. 5 is the left view of Fig. 3.
In figure:
1. horizontal frame 2. opening and closing cylinder 3. Connection Block 4. connecting rod 5. is installed the right head-shield 11. of the wing 6. track 7. column 8. opening and closing left head-shield 10. of track 9. and is installed wing stiffening plate 12. and install wing axle 13. slide block 14. suspension holdfast 15. and install aileron 16. and install aileron axle 17. horizontal supporting plate 18. locking cylinder
Detailed description of the invention
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The term such as upper and lower, inside and outside is herein established, difference with reference to the accompanying drawings based on position relationship shown in the drawings, and corresponding position relationship also likely changes thereupon, therefore, can not be understood as the absolute limit to protection domain.
Please refer to Fig. 1, Fig. 2, Fig. 1 is the axonometric drawing of a kind of detailed description of the invention of plat wide type hood opening-closing mechanism provided by the present invention; The schematic diagram that Fig. 2 is connected with head-shield for the hood opening-closing mechanism of plat wide type shown in Fig. 1.
In a kind of specific embodiment, plat wide type hood opening-closing mechanism provided by the present invention, is formed primarily of the part such as active driving mechanisms, driven driver train, and wherein, active driving mechanisms is positioned at below, and driven driver train is positioned at the top of active driving mechanisms.
Active driving mechanisms is formed primarily of horizontal frame 1, opening and closing cylinder 2, Connection Block 3, connecting rod 4 and one group of installation wing 5, the telescopic end of opening and closing cylinder 2 is connected with Connection Block 3, Connection Block 3 is the dolly of flat type, is arranged on movably on two tracks 6 of horizontal frame 1 by the twice linear bearing of bottom.
The front end of Connection Block 3 is provided with two root posts 7 be symmetrically arranged, the upper end hinged connecting rod 4 corresponding with it respectively of column 7, the front end of connecting rod 4 connects one group respectively and installs the wing 5, the below of installing the wing 5 is provided with one group of opening and closing track 8, installs the wing 5 front end and is fixedly connected with right head-shield 10 with left head-shield 9 respectively.
" Z " font that the wing 5 is obtuse angle in two bent angle positions is installed, and its bent angle position near rear end is provided with " U " shape groove, and the installation wing 5 is double-decker, its wing plate is provided with installs wing stiffening plate 11, be connected by gusset between the two, two install the wings 5 intersects, its rear end is provided with " C " shape bayonet socket, and two that are arranged side by side with left and right respectively by bayonet socket are installed wing axle 12 and are hinged in the mode of clamping.
Connecting rod 4 is hinged at the midway location installing the oblique part of the wing substantially with the installation wing 5, and the shape of installing wing stiffening plate 11 is consistent with the shape of installing the wing 5 latter half, and its front end and connecting rod 4 are hinged, and rear end is hinged with installation wing axle 12.
In off position, the left connecting rod of connecting rod 4 and right connecting rod parallel, or the spacing between left connecting rod and right connecting rod front end is less than the spacing between rear end.
The hinge lower end that connecting rod 4 and the installation wing 5 are hinged is provided with slide block 13, installs the wing 5 and is supported on opening and closing track 9 by slide block 13, in opening and closing process, installs the wing 5 by slide block 13 arcuately track slip on opening and closing track 8.
Please also refer to Fig. 3, Fig. 4, Fig. 5, Fig. 3 is the lateral plan of the hood opening-closing mechanism of plat wide type shown in Fig. 1; Fig. 4 is the birds-eye view of Fig. 3; Fig. 5 is the left view of Fig. 3.
Driven driver train is formed primarily of suspension holdfast 14 and installation aileron 15, suspension holdfast 14 is door shaped stent, with across mode be fixed on horizontal frame 1, its both sides are trapezoidal respectively to outer lug, install aileron axle 16 and are arranged on suspension holdfast 14 top by horizontal supporting plate 17.
Two install aileron 15 intersects, its front end is fixedly connected with right head-shield 10 with left head-shield 9 respectively, rear end is provided with " C " shape bayonet socket, and be arranged side by side two, left and right on suspension holdfast 14, aileron axle 16 is installed respectively by bayonet socket and is hinged in the mode of clamping, aileron 15 is installed substantially identical with connection mode with the shape of installing the wing 5, it is all " Z " font at obtuse angle in two bent angle positions, and its bent angle position near rear end is provided with " U " shape groove, difference is, installing aileron 15 is veneer form, does not arrange stiffening plate.
In addition, the side of Connection Block 3 is provided with the breach corresponding to locking cylinder 18 telescopic end, can realize the locking and unlocking to Connection Block 3 by the expanding-contracting action of locking cylinder 18.
During work, when the expansion link of opening and closing cylinder 2 stretches out forward, promote Connection Block 3 on horizontal frame along track 6 forward slip, and then promote that the wing 5 is installed by Connection Block 3 by its column 7 and connecting rod 4 and rotate around installation wing axle 12, two install the wing 5 mutually closes up under thrust, aileron 15 is installed also close up thereupon, installing the wing 5 and installing drives left head-shield 9 and right head-shield 10 to close up closedown closing up of aileron 15, otherwise, when the expansion link of opening and closing cylinder 2 is retracted backward, connecting rod 4 then can be pulled to move backward, thus drive left head-shield 9 and right head-shield 10 to open to both sides from centre.
By adopting the structure of S. A. arranged crosswise, achieving hood opening-closing mechanism uses simple Unscrew principle to open comparatively complicated railway vehicle cab head-shield mechanism, its structural safety is reliable, expand direct Unscrew formula switching mechanism to the Applicable scope of driver's cab moulding, can ensure to install the wing 5 and the synchronism of aileron 15 in opening and closing process and stability are installed, and it is little to take up room, easily avoid miscellaneous part in car, interference is there will not be in opening and closing process, the moulding changeable to driver's cab has stronger adaptive capacity, be particularly useful for the comparatively flat wide motor train unit of driver's cab front end moulding.
Above-described embodiment is only preferred version of the present invention, is specifically not limited thereto, and can make pointed adjustment according to actual needs on this basis, thus obtain different embodiments.Such as, the slide block 13 installed on the wing 5 is replaced with pulley, by pulley support on opening and closing track 8; Or, at the two ends of connecting rod 4, universal-joint is set respectively, etc.Because mode in the cards is more, just casehistory no longer one by one here.
Except above-mentioned hood opening-closing mechanism, the present invention also provides a kind of guideway vehicle, comprises car body and headstock, the operator's compartment front end of headstock is provided with head-shield and hood opening-closing mechanism, hood opening-closing mechanism is plat wide type hood opening-closing mechanism above, and all the other structures please refer to prior art, repeat no more herein.
Above plat wide type hood opening-closing mechanism provided by the present invention and guideway vehicle are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands core concept of the present invention for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a plat wide type hood opening-closing mechanism, comprising:
Active driving mechanisms, has horizontal frame, opening and closing cylinder, Connection Block, connecting rod and the installation wing;
The telescopic end of described opening and closing cylinder connects described Connection Block, and described Connection Block is installed on the slide rail of described horizontal frame movably;
The other end of described Connection Block connects pair of links respectively, and the other end of described connecting rod connects one group respectively and installs the wing; The below of the described installation wing is provided with one group of opening and closing track;
Driven driver train, has suspension holdfast and is connected to one group of described suspension holdfast and install aileron;
It is characterized in that, the described installation wing intersects, and its rear end is installed wing axle with on described horizontal frame group respectively and is hinged; Described installation aileron intersects, and its rear end is installed aileron axle with on described suspension holdfast group respectively and is hinged.
2. plat wide type hood opening-closing mechanism according to claim 1, is characterized in that, the rear end of the described installation wing is provided with " C " shape bayonet socket, and is hinged in the mode of clamping by described bayonet socket and described installation wing axle; The rear end of described installation aileron is provided with " C " shape bayonet socket, and is hinged in the mode of clamping by described bayonet socket and described installation aileron axle.
3. plat wide type hood opening-closing mechanism according to claim 2, is characterized in that, the described installation wing and installation aileron are all " Z " font at obtuse angle in two bent angle positions, and its bent angle position near rear end is provided with " U " shape groove.
4. plat wide type hood opening-closing mechanism according to claim 3, is characterized in that, the described installation wing is double-decker, and it is installed wing plate and is provided with installation wing stiffening plate, is connected between the two by gusset.
5. plat wide type hood opening-closing mechanism according to claim 4, is characterized in that, described connecting rod with the hinge lower end that is hinged of the wing be installed be provided with slide block, the described installation wing by described slider support in described opening and closing track.
6. the plat wide type hood opening-closing mechanism according to any one of claim 1 to 5, is characterized in that, described connecting rod is hinged at the midway location of the oblique part of the described installation wing with the installation wing.
7. plat wide type hood opening-closing mechanism according to claim 6, is characterized in that, in off position, the left connecting rod of described connecting rod and right connecting rod parallel, or the spacing between described left connecting rod and right connecting rod front end is less than the spacing between rear end.
8. the plat wide type hood opening-closing mechanism according to any one of claim 1 to 5, is characterized in that, described installation aileron axle is installed on described suspension holdfast top by horizontal supporting plate.
9. plat wide type hood opening-closing mechanism according to claim 8, is characterized in that, described suspension holdfast is door shaped stent, and its both sides are trapezoidal respectively to outer lug.
10. a guideway vehicle, comprises car body and headstock, and the operator's compartment front end of described headstock is provided with head-shield and hood opening-closing mechanism, it is characterized in that, described hood opening-closing mechanism is the plat wide type hood opening-closing mechanism described in any one of the claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613106.3A CN105172810A (en) | 2015-09-23 | 2015-09-23 | Railway vehicle and broad-flat type hood opening and closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613106.3A CN105172810A (en) | 2015-09-23 | 2015-09-23 | Railway vehicle and broad-flat type hood opening and closing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105172810A true CN105172810A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510613106.3A Pending CN105172810A (en) | 2015-09-23 | 2015-09-23 | Railway vehicle and broad-flat type hood opening and closing mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN105172810A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379344A (en) * | 2016-12-07 | 2017-02-08 | 中车长春轨道客车股份有限公司 | Novel front end opening and closing mechanism of high-speed motor train unit |
| CN106678313A (en) * | 2017-02-06 | 2017-05-17 | 中国航天空气动力技术研究院 | Rotating driving mechanism and method used in long and narrow space |
| CN109969209A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969207A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969208A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969206A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN110761654A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Rail vehicle, face guard and switching assembly |
| CN111152804A (en) * | 2020-01-02 | 2020-05-15 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle front end cover opening and closing mechanism and railway vehicle |
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| JP4762079B2 (en) * | 2006-08-10 | 2011-08-31 | 川崎重工業株式会社 | Cover opening / closing device for the top part of high-speed railway vehicles |
| CN103883195A (en) * | 2012-12-20 | 2014-06-25 | 南车青岛四方机车车辆股份有限公司 | Railway vehicle front cover opening and closing mechanism and design method thereof |
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| CN205010241U (en) * | 2015-09-23 | 2016-02-03 | 南车青岛四方机车车辆股份有限公司 | Rail vehicle and flat wide type hood closing mechanism |
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| JP4762079B2 (en) * | 2006-08-10 | 2011-08-31 | 川崎重工業株式会社 | Cover opening / closing device for the top part of high-speed railway vehicles |
| CN201206386Y (en) * | 2008-08-05 | 2009-03-11 | 铁道部运输局 | Switching mechanism for front cover |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379344A (en) * | 2016-12-07 | 2017-02-08 | 中车长春轨道客车股份有限公司 | Novel front end opening and closing mechanism of high-speed motor train unit |
| CN106678313A (en) * | 2017-02-06 | 2017-05-17 | 中国航天空气动力技术研究院 | Rotating driving mechanism and method used in long and narrow space |
| CN109969209A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969207A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969208A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969206A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Front end switching mechanism used for rail vehicle and the rail vehicle with it |
| CN109969206B (en) * | 2017-12-28 | 2021-01-19 | 比亚迪股份有限公司 | Front end opening and closing mechanism for railway vehicle and railway vehicle with front end opening and closing mechanism |
| CN109969209B (en) * | 2017-12-28 | 2021-01-19 | 比亚迪股份有限公司 | Front end opening and closing mechanism for railway vehicle and railway vehicle with front end opening and closing mechanism |
| CN110761654A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Rail vehicle, face guard and switching assembly |
| CN110761654B (en) * | 2018-07-27 | 2022-02-08 | 比亚迪股份有限公司 | Rail vehicle, face guard and switching assembly |
| CN111152804A (en) * | 2020-01-02 | 2020-05-15 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle front end cover opening and closing mechanism and railway vehicle |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant after: CRRC QINGDAO SIFANG CO., LTD. Address before: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |