CN103692245A - Crane-type shaft box processing and positioning device - Google Patents
Crane-type shaft box processing and positioning device Download PDFInfo
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- CN103692245A CN103692245A CN201310724648.9A CN201310724648A CN103692245A CN 103692245 A CN103692245 A CN 103692245A CN 201310724648 A CN201310724648 A CN 201310724648A CN 103692245 A CN103692245 A CN 103692245A
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- axle box
- pivoted arm
- positioning
- arm axle
- positioning seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a crane-type shaft box processing and positioning device which comprises a base (1), a first positioning seat (2), a first press device (4), a second positioning seat (4) and a second press device (5), wherein an installation positioning hole is formed in the base (1), the first positioning seat (2) is arranged on the base (2) and used for positioning a bearing hole of a crane-type shaft box (A), the first press device (4) is arranged on the first positioning seat (2), the second positioning seat (3) is arranged on the base (1) and used for positioning a node hole of the crane-type shaft box (A), and the second press device (5) is arranged on the second positioning seat (3). With the adoption of the crane-type shaft box processing and positioning device provided by the embodiment of the invention, a crane-type shaft box can be positioned relative to a processing device only by positioning the installation positioning hole in the base and all processing devices, error accumulation caused by frequently positioning and clamping the crane-type shaft box is prevented, and the processing accuracy of the crane-type shaft box is further effectively improved.
Description
Technical field
The present invention relates to EMUs equipment technical field, particularly a kind of pivoted arm axle box processing and positioning device.
Background technology
In the pivoted arm axle box process of bogie, due to its complex contour, need on a plurality of of pivoted arm axle box, process.Because the equipment that machining needs is different, make pivoted arm axle box in process, need multiple clamping.
Wherein, the required equipment of processing pivoted arm axle box comprises the equipment such as vertical machining centre, portal milling cutter, numerical control vertical lathe and radial drill, pivoted arm axle box difference clamping is in the said equipment, make clamping and mismachining tolerance accumulation on each equipment, cause the mismachining tolerance of pivoted arm axle box larger, when serious, even can cause pivoted arm axle box to use.
Therefore, how improving the machining accuracy of pivoted arm axle box, is the art personnel problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of pivoted arm axle box processing and positioning device, improve the machining accuracy of pivoted arm axle box.
For achieving the above object, the invention provides following technical scheme:
A pivoted arm axle box processing and positioning device, comprising:
Base, is provided with mounting-positioning holes on described base;
Be arranged on described base, for the first positioning seat of the dead eye of positioning arm formula axle box;
Be arranged at the first hold down gag on described the first positioning seat;
Be arranged on described base, for locating second positioning seat in the node hole of described pivoted arm axle box;
Be arranged at the second hold down gag on described the second positioning seat.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, also comprise and being arranged between described the first positioning seat and described the second positioning seat, for the adjusting seat of the horizontal centering of described pivoted arm axle box.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described adjusting seat comprises and is fixedly installed on the supporting seat on described base and is arranged at the clamp screw lever apparatus on described supporting seat;
The quantity of described clamp screw lever apparatus is two and positioned opposite, and the orientation of two described clamp screw lever apparatus is perpendicular to the orientation of described the first hold down gag and described the second hold down gag.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described supporting seat and described base are bolted;
Described supporting seat and described base are located by alignment pin.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described the first hold down gag comprises the first connecting rod that is arranged on described the first positioning seat, be sheathed on the first compact heap on described first connecting rod and with the first nut of described first connecting rod threaded engagement;
Described the second hold down gag comprises the second connecting rod that is arranged on described the second positioning seat, be sheathed on the second compact heap on described second connecting rod and with the second nut of described second connecting rod threaded engagement.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described first connecting rod is arranged at the center of described the first positioning seat; Described second connecting rod is arranged at the center of described the second positioning seat.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described the first compact heap has the through hole passing for described the first nut, between described the first nut and described the first compact heap, is provided with location snap ring, and described location snap ring has the opening passing for described first connecting rod;
The race diameter of described location snap ring is greater than the diameter of described through hole, and the inner ring diameter of described location snap ring is less than the circumscribed circle diameter of described the first nut.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described the first compact heap is circular compact heap; On described the first compact heap, be provided with handle.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described the second compact heap has the draw-in groove passing for described second connecting rod.
Preferably, in above-mentioned pivoted arm axle box processing and positioning device, described the first positioning seat and described the second positioning seat are all led to and are connect by bolt and described base; Described the first positioning seat and described the second positioning seat are all located by alignment pin and described base.
From above-mentioned technical scheme, can find out, pivoted arm axle box processing and positioning device provided by the invention, in the time of on pivoted arm axle box being assemblied in to the pivoted arm axle box processing and positioning device that the embodiment of the present invention provides, pivoted arm axle box has machined dead eye and node hole.The dead eye of pivoted arm axle box is sheathed on the first positioning seat, the outer wall of the first positioning seat and the inwall of dead eye are contacted, and the one end that by the first hold down gag, pivoted arm axle box is provided with to dead eye compresses to the end face of base; , the node borehole jack of pivoted arm axle box is located on the second positioning seat meanwhile, the outer wall of the second positioning seat is contacted with the inwall in node hole, and the one end that by the second hold down gag, pivoted arm axle box is provided with to node hole compresses to the end face of base.By adopting plane and two pits formula location to place, improved greatly the installation site accuracy on the pivoted arm axle box processing and positioning device that pivoted arm axle box provides in the embodiment of the present invention.The pivoted arm axle box processing and positioning device that the embodiment of the present invention provides, only need positioning instant between mounting-positioning holes by base and each processing unit (plant) can complete pivoted arm axle box with respect to the location of processing unit (plant), the accumulation of error of having avoided pivoted arm axle box multiple bearing clamping and having caused, and then effectively improved the machining accuracy of pivoted arm axle box.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The pivoted arm axle box processing and positioning device that Fig. 1 provides for the embodiment of the present invention and the assembling schematic diagram of pivoted arm axle box;
The pivoted arm axle box processing and positioning device that Fig. 2 provides for the embodiment of the present invention and the assembling front view of pivoted arm axle box;
Fig. 3 looks schematic diagram for the master of the pivoted arm axle box processing and positioning device that the embodiment of the present invention provides;
The schematic top plan view of the pivoted arm axle box processing and positioning device that Fig. 4 provides for the embodiment of the present invention.
Wherein,
Base-1, the first positioning seat-2, the second positioning seat-3, the first hold down gag-4, the second hold down gag-5, adjusting seat-6, supporting seat-61, clamp screw lever apparatus-62, pivoted arm axle box-A.
The specific embodiment
The invention discloses a kind of pivoted arm axle box processing and positioning device, improve the machining accuracy of pivoted arm axle box.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1-Fig. 4, the pivoted arm axle box processing and positioning device that Fig. 1 provides for the embodiment of the present invention and the assembling schematic diagram of pivoted arm axle box; The pivoted arm axle box processing and positioning device that Fig. 2 provides for the embodiment of the present invention and the assembling front view of pivoted arm axle box; Fig. 3 looks schematic diagram for the master of the pivoted arm axle box processing and positioning device that the embodiment of the present invention provides; The schematic top plan view of the pivoted arm axle box processing and positioning device that Fig. 4 provides for the embodiment of the present invention.
The pivoted arm axle box processing and positioning device that the embodiment of the present invention provides, comprising: base 1, is provided with mounting-positioning holes on base 1; Be arranged on base 1, for the first positioning seat 2 of the dead eye of positioning arm formula axle box A; Be arranged at the first hold down gag 4 on the first positioning seat 2; Be arranged on base 1, for second positioning seat 3 in the node hole of positioning arm formula axle box A; Be arranged at the second hold down gag 5 on the second positioning seat 3.
As depicted in figs. 1 and 2, in the time of on pivoted arm axle box A being assemblied in to the pivoted arm axle box processing and positioning device that the embodiment of the present invention provides, pivoted arm axle box A has machined dead eye and node hole.The dead eye of pivoted arm axle box A is sheathed on the first positioning seat 2, first outer wall of positioning seat 2 and the inwall of dead eye are contacted, and the one end that by the first hold down gag 4, pivoted arm axle box A is provided with to dead eye compresses to the end face of base 1; , the node borehole jack of pivoted arm axle box A is located on the second positioning seat 3 meanwhile, the outer wall of the second positioning seat 3 is contacted with the inwall in node hole, and the one end that by the second hold down gag 5, pivoted arm axle box A is provided with to node hole compresses to the end face of base 1.By adopting plane and two pits formula location to place, improved greatly the installation site accuracy on the pivoted arm axle box processing and positioning device that pivoted arm axle box A provides in the embodiment of the present invention.The pivoted arm axle box processing and positioning device that the embodiment of the present invention provides, only need positioning instant between mounting-positioning holes by base 1 and each processing unit (plant) can complete pivoted arm axle box A with respect to the location of processing unit (plant), the accumulation of error of having avoided pivoted arm axle box A multiple bearing clamping and having caused, and then effectively improved the machining accuracy of pivoted arm axle box A.
Further, the pivoted arm axle box processing and positioning device that the embodiment of the present invention provides also comprises and being arranged between the first positioning seat 2 and the second positioning seat 3, for the adjusting seat 6 of the horizontal centering of pivoted arm axle box A.By adjusting seat 6 is set, further to pivoted arm axle box A on base 1 perpendicular to the position adjustments in the orientation of the first positioning seat 2 and the second positioning seat 3, the further accurate installation site accuracy of pivoted arm axle box A on pivoted arm axle box processing and positioning device.Wherein, the horizontal direction in the horizontal centering of pivoted arm axle box A is perpendicular to the orientation of the first positioning seat 2 and the second positioning seat 3.
As shown in Figure 3 and Figure 4, adjusting seat 6 comprises the supporting seat 61 being fixedly installed on base 1 and is arranged at the clamp screw lever apparatus 62 on supporting seat 61; The quantity of clamp screw lever apparatus 62 is two and positioned opposite, and the orientation of two clamp screw lever apparatus 62 is perpendicular to the orientation of the first hold down gag 4 and the second hold down gag 5.After making the two ends of pivoted arm axle box A be individually fixed on the first positioning seat 2 and the second positioning seat 3, the mid portion of pivoted arm axle box A is between two clamp screw lever apparatus 62, by regulating two clamp screw lever apparatus 62, make the screw rod end of two clamp screw lever apparatus 62 prop up the both sides of pivoted arm axle box A, complete the horizontal centering of pivoted arm axle box A.
Preferably, supporting seat 61 is bolted with base 1; Supporting seat 61 is located by alignment pin with base 1.
In the pivoted arm axle box processing and positioning device providing in the embodiment of the present invention, the first hold down gag 4 comprises the first connecting rod that is arranged on the first positioning seat 2, be sheathed on the first compact heap on first connecting rod and with the first nut of first connecting rod threaded engagement, by the first nut, with respect to first connecting rod, screw and reach the first compact heap and compress to base 1 effect that pivoted arm axle box A is provided with one end of dead eye; The second hold down gag 5 comprises the second connecting rod that is arranged on the second positioning seat 3, be sheathed on the second compact heap on second connecting rod and with the second nut of second connecting rod threaded engagement, by the second nut, with respect to second connecting rod, screw and reach the second compact heap and compress to base 1 effect that pivoted arm axle box A is provided with the one end in node hole.
In order to make thrust even, preferably first connecting rod is arranged to the center of the first positioning seat 2; Second connecting rod is arranged at the center of the second positioning seat 3.
As shown in Figure 1 and Figure 4, the first compact heap has the through hole passing for the first nut, between the first nut and the first compact heap, is provided with location snap ring, and location snap ring has the opening passing for first connecting rod; The race diameter of location snap ring is greater than the diameter of through hole, and the inner ring diameter of location snap ring is less than the circumscribed circle diameter of the first nut.The first nut is installed on first connecting rod all the time, in the process of pivoted arm axle box A assembling, the dead eye of pivoted arm axle box A is passed to the first connecting rod that is provided with the first nut, and location is arranged on the first positioning seat 2, the first compact heap is placed on pivoted arm axle box A, the first nut is passed by the through hole of the first compact heap, and location snap ring is arranged between the first compact heap and the first nut, first connecting rod is worn into snap ring inside, location and is tightened the first nut by the opening of location snap ring, make it to base 1 extruding the first compact heap, complete and compress operation.
In the present embodiment, in order further to improve the uniformity of thrust, the first compact heap is circular compact heap.For the ease of the carrying of the first compact heap, on the first compact heap, be provided with handle.
As shown in Figure 4, the second compact heap has the draw-in groove passing for second connecting rod.By draw-in groove is set, make the second nut be installed on all the time on second connecting rod, only need the node hole of pivoted arm axle box A through the second connecting rod that is provided with the second nut, the second compact heap is arranged between the second nut and pivoted arm axle box A, second connecting rod is sheathed in the second compact heap by draw-in groove, further, can between the second nut and the second compact heap, pad be set.
In the present embodiment, in order to improve installation positioning precision, the first positioning seat 2 and the second positioning seat 3 are all led to and are connect by bolt and base 1; The first positioning seat 2 and the second positioning seat 3 are all by alignment pin and base 1 location.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a pivoted arm axle box processing and positioning device, is characterized in that, comprising:
Base (1), described base is provided with mounting-positioning holes on (1);
Be arranged at described base (1) upper, for first positioning seat (2) of the dead eye of positioning arm formula axle box (A);
Be arranged at the first hold down gag (4) on described the first positioning seat (2);
Be arranged at described base (1) upper, for locating second positioning seat (3) in the node hole of described pivoted arm axle box (A);
Be arranged at the second hold down gag (5) on described the second positioning seat (3).
2. pivoted arm axle box processing and positioning device as claimed in claim 1, is characterized in that, also comprises and being arranged between described the first positioning seat (2) and described the second positioning seat (3), for the adjusting seat (6) of the horizontal centering of described pivoted arm axle box A.
3. pivoted arm axle box processing and positioning device as claimed in claim 2, it is characterized in that, described adjusting seat (6) comprises the supporting seat (61) being fixedly installed on described base (1) and is arranged at the clamp screw lever apparatus (62) on described supporting seat (61);
The quantity of described clamp screw lever apparatus (62) is two and positioned opposite, and the orientation of two described clamp screw lever apparatus (62) is the orientation with described the second hold down gag (5) perpendicular to described the first hold down gag (4).
4. pivoted arm axle box processing and positioning device as claimed in claim 3, is characterized in that, described supporting seat (61) is bolted with described base (1);
Described supporting seat (61) is located by alignment pin with described base (1).
5. pivoted arm axle box processing and positioning device as claimed in claim 1, it is characterized in that, described the first hold down gag (4) comprises the first connecting rod that is arranged on described the first positioning seat (2), be sheathed on the first compact heap on described first connecting rod and with the first nut of described first connecting rod threaded engagement;
Described the second hold down gag (5) comprises the second connecting rod that is arranged on described the second positioning seat (3), be sheathed on the second compact heap on described second connecting rod and with the second nut of described second connecting rod threaded engagement.
6. pivoted arm axle box processing and positioning device as claimed in claim 5, is characterized in that, described first connecting rod is arranged at the center of described the first positioning seat (2); Described second connecting rod is arranged at the center of described the second positioning seat (3).
7. pivoted arm axle box processing and positioning device as claimed in claim 5, it is characterized in that, described the first compact heap has the through hole passing for described the first nut, between described the first nut and described the first compact heap, be provided with location snap ring, described location snap ring has the opening passing for described first connecting rod;
The race diameter of described location snap ring is greater than the diameter of described through hole, and the inner ring diameter of described location snap ring is less than the circumscribed circle diameter of described the first nut.
8. pivoted arm axle box processing and positioning device as claimed in claim 7, is characterized in that, described the first compact heap is circular compact heap; On described the first compact heap, be provided with handle.
9. the pivoted arm axle box processing and positioning device as described in claim 5-7 any one, is characterized in that, described the second compact heap has the draw-in groove passing for described second connecting rod.
10. pivoted arm axle box processing and positioning device as claimed in claim 1, is characterized in that, described the first positioning seat (2) and described the second positioning seat (3) are all led to and connect by bolt and described base (1); Described the first positioning seat (2) and described the second positioning seat (3) are all by alignment pin and described base (1) location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724648.9A CN103692245A (en) | 2013-12-24 | 2013-12-24 | Crane-type shaft box processing and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724648.9A CN103692245A (en) | 2013-12-24 | 2013-12-24 | Crane-type shaft box processing and positioning device |
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| Publication Number | Publication Date |
|---|---|
| CN103692245A true CN103692245A (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724648.9A Pending CN103692245A (en) | 2013-12-24 | 2013-12-24 | Crane-type shaft box processing and positioning device |
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| CN (1) | CN103692245A (en) |
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| CN104034542A (en) * | 2014-06-23 | 2014-09-10 | 常州华德机械有限公司 | Fatigue test tool for high-speed train bogie journal box |
| CN104354024A (en) * | 2014-10-22 | 2015-02-18 | 江苏万盛铸造有限公司 | Cam box processing and clamping device |
| CN104440217A (en) * | 2014-11-07 | 2015-03-25 | 江苏万盛铸造有限公司 | Cam box machining, clamping and positioning device |
| CN104608789A (en) * | 2015-01-16 | 2015-05-13 | 南车青岛四方机车车辆股份有限公司 | Rail train and shaft box structure thereof |
| CN105171447A (en) * | 2015-04-28 | 2015-12-23 | 中国人民解放军第五七二一工厂 | Positioning clamp and method for machining inner circle face of orthogonal shaft sleeve |
| CN105328488A (en) * | 2015-12-09 | 2016-02-17 | 苏州新锐合金工具股份有限公司 | Datum plane and hole processing clamp for tricone bit legs |
| CN106695386A (en) * | 2016-12-28 | 2017-05-24 | 齐齐哈尔雷昂重工机械制造有限责任公司 | Train truck bogie hole machining tool |
| CN106826284A (en) * | 2016-12-28 | 2017-06-13 | 齐齐哈尔雷昂重工机械制造有限责任公司 | Train wagons bogie processes bottom surface frock |
| US9744976B2 (en) | 2015-01-16 | 2017-08-29 | Crrc Qingdao Sifang Co., Ltd. | Railway vehicle and axle box structure thereof |
| CN107838714A (en) * | 2017-11-01 | 2018-03-27 | 中车长江铜陵车辆有限公司 | A kind of borehole positioning apparatus of rail vehicle truck pivoted arm |
| CN109483269A (en) * | 2019-01-03 | 2019-03-19 | 常德市艾锐科机电有限公司 | A kind of frock clamp of the adjustment attachment base with screw rod |
| CN111941109A (en) * | 2020-06-28 | 2020-11-17 | 北京实验工厂有限责任公司 | Positioning and clamping device for high-precision space vertical hole turning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034542A (en) * | 2014-06-23 | 2014-09-10 | 常州华德机械有限公司 | Fatigue test tool for high-speed train bogie journal box |
| CN104354024A (en) * | 2014-10-22 | 2015-02-18 | 江苏万盛铸造有限公司 | Cam box processing and clamping device |
| CN104440217A (en) * | 2014-11-07 | 2015-03-25 | 江苏万盛铸造有限公司 | Cam box machining, clamping and positioning device |
| US9744976B2 (en) | 2015-01-16 | 2017-08-29 | Crrc Qingdao Sifang Co., Ltd. | Railway vehicle and axle box structure thereof |
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| CN105171447A (en) * | 2015-04-28 | 2015-12-23 | 中国人民解放军第五七二一工厂 | Positioning clamp and method for machining inner circle face of orthogonal shaft sleeve |
| CN105328488B (en) * | 2015-12-09 | 2017-12-19 | 苏州新锐合金工具股份有限公司 | Tricone bit bit leg reference plane, hole processing clamp |
| CN105328488A (en) * | 2015-12-09 | 2016-02-17 | 苏州新锐合金工具股份有限公司 | Datum plane and hole processing clamp for tricone bit legs |
| CN106826284A (en) * | 2016-12-28 | 2017-06-13 | 齐齐哈尔雷昂重工机械制造有限责任公司 | Train wagons bogie processes bottom surface frock |
| CN106695386A (en) * | 2016-12-28 | 2017-05-24 | 齐齐哈尔雷昂重工机械制造有限责任公司 | Train truck bogie hole machining tool |
| CN107838714A (en) * | 2017-11-01 | 2018-03-27 | 中车长江铜陵车辆有限公司 | A kind of borehole positioning apparatus of rail vehicle truck pivoted arm |
| CN109483269A (en) * | 2019-01-03 | 2019-03-19 | 常德市艾锐科机电有限公司 | A kind of frock clamp of the adjustment attachment base with screw rod |
| CN111941109A (en) * | 2020-06-28 | 2020-11-17 | 北京实验工厂有限责任公司 | Positioning and clamping device for high-precision space vertical hole turning |
| CN113369921A (en) * | 2021-06-21 | 2021-09-10 | 长春中车轨道车辆有限公司 | EMUs axle box node spot facing work frock |
| CN113369921B (en) * | 2021-06-21 | 2022-09-20 | 长春中车轨道车辆有限公司 | EMUs axle box node hole processing frock |
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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: 20140402 |