CN102773636B - Installing and assembling device for barrier remover - Google Patents
Installing and assembling device for barrier remover Download PDFInfo
- Publication number
- CN102773636B CN102773636B CN201110124467.3A CN201110124467A CN102773636B CN 102773636 B CN102773636 B CN 102773636B CN 201110124467 A CN201110124467 A CN 201110124467A CN 102773636 B CN102773636 B CN 102773636B
- Authority
- CN
- China
- Prior art keywords
- pilot
- assembly
- welding device
- workbench
- main body
- 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.)
- Active
Links
Landscapes
- Automatic Assembly (AREA)
Abstract
The invention discloses an installing and assembling device for a barrier remover. The installing and assembling device for the barrier remover comprises a first installing and assembling device and a second installing and assembling device. The first installing and assembling device comprises a first working platform, a positioning frame and a first workpiece fixing device. The positioning frame is installed on a working face of the first working platform and is provided with two working faces that are vertical to each other. The first workpiece fixing device is respectively installed on the working faces of the first working platform and the positioning frame to fix workpieces. The second installing and assembling device comprises a second working platform, a vertical plate and a second workpiece fixing device. The working face of the vertical plate is vertical to that of the second working platform. The second workpiece fixing device is respectively installed on the working faces of the vertical plate and the second working platform to fix workpieces. The first installing and assembling device positions the body of the barrier remover and welds installation bases in pair. The second installing and assembling device positions the body of the barrier remover and the installation bases installed and assembled and welds other parts in pair. The installing and assembling device for the barrier remover provided by the invention can improve the positioning precision of parts of the barrier remover in the installing and welding process, enhance the installing and assembling quality, and reduce the dimension error of the barrier remover.
Description
Technical field
The present invention relates to assembly welding location technology, especially relate to a kind of pilot assembly-welding device.
Background technology
Pilot is the safety device that track train is got rid of the barrier that may exist on track circuit, and pilot is one of vitals guaranteeing track train safe operation, avoids track train that the interruption of services such as derailing occur.
The main body of existing pilot is three layers of pipe row structure, and the seamless steel pipe of employing bends assembly welding and forms, and is aided with angle steel stationary pipes row.With bolt, pilot is installed on to the bottom of locomotive underframe draw beam, the center bottom of pilot need to be born the impulsive force that is equivalent to 137kN static pressure, therefore require pilot to there is suitable intensity, give full play to the effect that it gets rid of the barrier on track circuit.
Existing pilot assembly-welding device comprises assembly welding platform and is welded on a plurality of location-plates on assembly welding platform, particularly, three layers of pipe row's of location-plate and pilot arrangement angle adapts, for fixing three layers of pipe row, to determine the relative position relation of three layers of pipe row's forward and backward and interlayer.
In carrying out research process of the present invention, inventor finds to adopt above-mentioned existing pilot assembly-welding device to have following technological deficiency:
In existing pilot assembly-welding device, location-plate is welded on assembly welding platform, taking dimensions when undesirable of pilot after assembly welding, need assembly welding pilot again, because location-plate can not be adjusted, now can only adjust pilot group to size by shimming, thereby cause the larger scale error of pilot group Produced after Welding, easily there is distortion in pilot.
And existing pilot assembly-welding device does not have versatility, when pilot project organization changes, except assembly welding platform, all the other functional devices all need to redesign and manufacture, and can increase the manufacturing cost of pilot.
Summary of the invention
The invention provides a kind of pilot assembly-welding device, in order to solve defect of the prior art, can exactly each parts of pilot be positioned and can suitably be adjusted, guarantee the assembly welding quality of pilot, and there is versatility, reduce production costs.
The invention provides a kind of the first assembly-welding device and the second assembly-welding device of comprising; Described the first assembly-welding device comprises the first workbench, locating rack and the first Work fixing device; Described locating rack is arranged on the working face of described the first workbench, and described locating rack has two orthogonal working faces, and described the first Work fixing device is arranged on respectively on the working face of described the first workbench and locating rack, fixation workpiece; Described the second assembly-welding device comprises the second workbench, riser and second workpiece fixture; The working face of described riser is vertical with the working face of described the second workbench; Described the second work fixture is arranged on the working face of described riser and the second workbench, fixation workpiece.
Pilot assembly-welding device provided by the invention, by the first assembly-welding device location pilot main body, welding mount pad, by pilot main body and mount pad after the second assembly-welding device location assembly welding, welding miscellaneous part, can improve the positioning precision of each parts in pilot assembly welding process, improve the assembly welding quality of pilot, reduce the scale error of pilot.
And holding device and hold down gag are adjustable structure, improved interchangeability and the adjustability of pilot assembly-welding device, reduce production costs.
Accompanying drawing explanation
The structural representation of the pilot that Fig. 1 provides for first embodiment of the invention;
The front view of the first assembly-welding device that Fig. 2 provides for first embodiment of the invention;
Fig. 3 is the top view of the first assembly-welding device in Fig. 2;
Fig. 4 is the left view of the first assembly-welding device in Fig. 2;
The front view of the second assembly-welding device that Fig. 5 provides for first embodiment of the invention;
Fig. 6 is the left view of the second assembly-welding device in Fig. 5;
The front view of the holding device that Fig. 7 provides for first embodiment of the invention;
Fig. 8 is the left view of the holding device in Fig. 7;
The front view of the hold down gag that Fig. 9 provides for first embodiment of the invention;
Figure 10 is the left view of hold down gag in Fig. 9.
Reference numeral:
10-pilot 101-pilot main body 102-wing plate
103-gusset 104-pedal 105-mount pad
Dull and stereotyped 1-the first assembly-welding device of the dull and stereotyped 1012-second of 1011-first
11-first workbench 111-the first working face 12-locating rack
The vertical locating surface 13-of 121-horizontal location face 122-holding device
131-side plate 132-base plate 133-seat board
The movable pressure head 14-of 134-screw rod 135-hold down gag
141-base 1411-base body 1412-lug
142-clamp 143-pressing plate 144-the first bearing pin
145-second bearing pin 2-second assembly-welding device 21-the second workbench
211-the second working face 22-riser 23-gripper shoe
24-bolt 25-connecting plate 26-briquetting
27-fastening bolt 28-connecting axle
The specific embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is 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.
In order better to understand structure and the course of work of pilot assembly-welding device, first by reference to the accompanying drawings 1 explanation pilot provided by the invention structural feature.
As shown in Figure 1, this pilot 10 is board-like Welding Structure, comprises pilot main body 101, wing plate 102, gusset 103, pedal 104 and mount pad 105.
Pilot main body 101 is L-type bent plate, comprise orthogonal first dull and stereotyped the 1011 and second flat board 1012, pilot main body 10 middle parts are welded with the gusset 103 of right angled triangle, gusset 103 is perpendicular to first dull and stereotyped the 1011 and second flat board 1012, between gusset 103 and the two ends of pilot main body 101, be symmetrically welded two blocks of leg-of-mutton wing plates 102, wing plate 102 has angle of inclination, is convenient to get rid of the barrier on track.The two ends of the first flat board 1011 are welded with the pedal 104 of the use of shunting, the second flat board 1012 another side two mount pads 105 are installed, on mount pad 105, there is installing hole, in practical application, by bolt, pilot 10 is installed on to the bottom of locomotive underframe draw beam.
Below in conjunction with accompanying drawing 2-6, illustrate structure and the course of work of the pilot assembly-welding device that the embodiment of the present invention provides.
As in Figure 2-4, in the first embodiment of the present invention, pilot assembly-welding device comprises the first assembly-welding device 1 and the second assembly-welding device 2.
The first assembly-welding device 1 comprises the first workbench 11, locating rack 12, holding device 13 and hold down gag 14.
Particularly, the first workbench 11 has first working face 111, locating rack 12 is cube structure, locating rack 12 is arranged on the first working face 111 of the first workbench 11, locating rack 12 has two orthogonal locating surfaces, specifically comprise horizontal location face 121 and vertical locating surface 122 (as shown in Figure 4), for locating fixedly pilot main body 101 (L-type bent plate).Holding device 13 is arranged on the first working face 111 of the first workbench 11, hold down gag 14 is arranged on the horizontal location face 121 of locating rack 12, holding device 13 holds out against fixedly the first flat board 1011 of pilot main body 101, hold down gag 14 is fixed the second flat board 1012 of pilot main body 101, thereby pilot main body 101 is fixing.
As shown in Figure 5 and Figure 6, the second assembly-welding device comprises the second workbench 21, riser 22, bolt 24, briquetting 26 and fastening bolt 27; The second working face 211 of the second workbench 21 is vertical with the working face 221 of riser 22; On the second workbench 21, there is screwed hole, briquetting 26 is strip structure, offers slotted hole along its length on briquetting 26, and fastening bolt 27 is through the slotted hole of briquetting 26, coordinate with the screwed hole on the second workbench 21, by first dull and stereotyped 1011 of pilot main body 101, compress.
On the working face 221 of riser 22, offer with mount pad 105 on the screwed hole that adapts of installing hole, bolt 24 coordinates with the screwed hole on riser 22 through the installing hole on mount pad 105, mount pad 105 is fixed on the working face 221 of riser 22.
The pilot assembly-welding device providing in conjunction with above-described embodiment, illustrates this pilot assembly-welding device in the application of the assembling process of pilot.
First it should be noted that, pilot main body 101 is L-type bent plate, the precision size of the linearity of pilot main body 101 and flatness directly affects the installation accuracy of pilot integral body, for this reason, and the assembly welding location that the present embodiment provides two cover assembly-welding devices to realize pilot.
Detailed process is as follows:
The first step, location pilot main body 101;
Pilot main body 101 after die mould is placed on the locating rack 12 of the first assembly-welding device 1, second dull and stereotyped 1012 of pilot main body 101 contacts (shown in Fig. 4) with the horizontal location face 121 of locating rack 12, first dull and stereotyped 1011 of pilot main body 101 contacts with the vertical locating surface 122 of locating rack 12, by holding device 13, hold out against the first flat board 1011 of pilot main body 101, the vertical locating surface 122 of itself and locating rack 12 is close to, by hold down gag 14, compress pilot main body 101 second flat boards 1012, the horizontal location face 121 of itself and locating rack 12 is close to, thereby pilot main body 101 is fixing.
Second step, welding mount pad 105;
On the second flat board 1012 of pilot main body 101, weld respectively two mount pads 105.
The 3rd step, pilot main body 101 and mount pad 105 after the welding of location;
By the pilot main body 101 after welding and mount pad 105, from the first assembly-welding device 1, take off, be placed on the second assembly-welding device 2, by bolt 24 through the installing hole on mount pad 105 and the screwed hole on riser 22, mount pad 105 and pilot main body 101 are fixed on riser 22, by briquetting 26 and fastening bolt 27, the another side of pilot main body 101 are fixed on the second workbench 21.
The 4th step, welding gusset 103, wing plate 102 and pedal 104.
The assembling precision of gusset 103, wing plate 102 and pedal 104 is less demanding, during welding, adopts line location, welding one by one.
The pilot assembly-welding device that the present embodiment provides, by the first assembly-welding device 1 location pilot main body 101, welding mount pad 105, by pilot main body 101 and mount pad 105 after the second assembly-welding device 2 location assembly weldings, welding miscellaneous part, can improve the positioning precision of each parts in pilot assembly welding process, improve the assembly welding quality of pilot, reduce the scale error of pilot.
And holding device 13 and hold down gag 14 are adjustable structure, have improved interchangeability and the adjustability of pilot assembly-welding device, reduce production costs.
In the above-described embodiments, in the second assembly-welding device 2, can connecting plate 25 be installed in the both ends of the surface of the second workbench 21 and riser 22, on connecting plate 25, be provided with along the connecting axle 28 of the second assembly-welding device 2 length directions, connecting axle 28 can weld deflection machine with axle and be connected, and the rotation of axle welding deflection machine is taken the second assembly-welding device 2 to and rotated, can realize optimum position welding, as downhand welding (PA) or flat fillet weld (PB), can reduce to weld difficulty, improve welding quality.
In addition, in the second assembly-welding device 2, gripper shoe 23 is installed on riser 22, distance between the width of gripper shoe 23 and two mount pads 105 adapts, the thickness of the thickness of gripper shoe 23 and mount pad 105 adapts, the second flat board 1012 of the upper plane of gripper shoe 23 and pilot main body 101 is close to, and prevents the second dull and stereotyped 1012 distortion.
In addition, in the second assembly-welding device 2, the another side of the second workbench 21 also can be installed riser 22, briquetting 26 and set bolt 27.The utilization rate that can improve pilot assembly-welding device, reduces costs.
With reference to figure 7 and Fig. 8, the front view of the holding device that Fig. 7 provides for first embodiment of the invention; Fig. 8 is the left view of the holding device in Fig. 7.
The holding device 13 that the present embodiment provides comprises the movable pressure head 135 of two side plates 131, base plate 132, two seat boards 133, two screw rods 134 and screw rod 134 front ends; Side plate 131 is fixedly connected with base plate 132 and perpendicular to base plate 132, seat board 133 is arranged between side plate 131 and with side plate 131 and is fixedly connected with, two seat boards 133 are different apart from the distance of base plate 132, on seat board 133, there is screwed hole, screw rod 134 coordinates with the screwed hole on seat board 133, and the front end of screw rod 134 has movable pressure head 135.
During work, by screwing screw rod 134, movable pressure head 135 can compress pilot main body 101.
The hold down gag that the present embodiment provides, the reach of screw rod 134 has larger adjusting range, has good adjustable type and interchangeability, in follow-up product improvement process, can reuse, and reduces production costs.
With reference to figure 9 and Figure 10, the front view of the hold down gag that Fig. 9 provides for first embodiment of the invention; Figure 10 is the left view of the hold down gag in Fig. 9.
The hold down gag 14 that the present embodiment provides comprises base 141, two clamps 142, pressing plate 143, the first bearing pin 144 and the second bearing pins 145, base body 1411 is cube structure, base body 1411 is fixedly connected with the horizontal location face 121 of locating rack 12, in base body 1411, there is the first pin shaft hole, on base body 1411 upper surfaces, there are two lugs 1412, on lug 1412, there is the second pin shaft hole.
Clamp 142 is crooked battened construction, one end of clamp 142 has the first pin shaft hole, the first bearing pin 144 coordinates with the first pin shaft hole in clamp 142 and base body 1411, two clamps 142 are separately fixed to the two ends of base body 1411, two clamps 142 can rotate around the first bearing pin 1411.
Pressing plate 143 is crooked battened construction, and one end of pressing plate 143 has the second pin shaft hole, and the second bearing pin 145, through the second pin shaft hole on lug 1412 and pressing plate 143, is fixed on pressing plate on lug 1412, and pressing plate 143 can rotate around the second bearing pin 145.
During work, clamp 142 and pressing plate 143 block and are pressed in pilot main body 101 simultaneously, realize fixing pilot.
The hold down gag that the present embodiment provides, pressing plate 142 and clamp 143 cards press the size of workpiece to have certain accommodation, have good adjustable type and interchangeability, in follow-up product improvement process, can reuse, and reduce production costs.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a pilot assembly-welding device, is characterized in that, comprises the first assembly-welding device and the second assembly-welding device;
Described the first assembly-welding device comprises the first workbench, locating rack, holding device and hold down gag;
Described the first workbench has first working face, described locating rack is cube structure, described locating rack is arranged on described first working face of described the first workbench, described locating rack has two orthogonal locating surfaces, specifically comprise horizontal location face and vertical locating surface, for locating fixedly pilot main body; Described holding device is arranged on described first working face of described the first workbench; Described hold down gag is arranged on the horizontal location face of described locating rack, and described holding device holds out against the first flat board of fixing described pilot main body, and described hold down gag is fixed the second flat board of described pilot main body, thereby pilot main body is fixed;
Described the second assembly-welding device comprises the second workbench, riser, bolt, briquetting and fastening bolt;
The second working face of described the second workbench is vertical with the working face of described riser; On described the second workbench, there is screwed hole; Described briquetting is strip structure, on described briquetting, offer slotted hole along its length, described fastening bolt, through the slotted hole of described briquetting, coordinates with the screwed hole on described the second workbench, by the described first dull and stereotyped compression of described pilot main body.
2. pilot assembly-welding device according to claim 1, is characterized in that, described holding device comprises two side plates, base plate, two seat boards and two screw rods; Described side plate is fixedly connected with base plate and perpendicular to described base plate, described seat board is arranged between described side plate, on described seat board, has screwed hole, and described screw rod coordinates with screwed hole, and the front end of described screw rod has movable pressure head.
3. pilot assembly-welding device according to claim 1, it is characterized in that, described hold down gag comprises base, two clamps, pressing plate, the first bearing pin and the second bearing pins, described base is fixedly connected with a working face of described locating rack, described base body is cube structure, in described base body, there is the first pin shaft hole, on a face of described base body, there are two lugs, on described lug, there is the second pin shaft hole; Described clamp and pressing plate are crooked battened construction, and one end of described clamp has the first pin shaft hole, and one end of described clamp has the second pin shaft hole;
Described the first bearing pin coordinates with the first pin shaft hole in two clamps and base body, two clamps is fixed on to the both sides of described base, and described clamp can rotate around described the first bearing pin;
Described the second bearing pin coordinates with the second pin shaft hole on described pressing plate and lug, and pressing plate is fixed between lug, and described pressing plate can rotate around described the second bearing pin.
4. pilot assembly-welding device according to claim 1, it is characterized in that, in described the second assembly-welding device, on described riser, gripper shoe is installed, distance between two mount pads of the width of described gripper shoe and pilot adapts, and the thickness of the thickness of described gripper shoe and the mount pad of pilot adapts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124467.3A CN102773636B (en) | 2011-05-13 | 2011-05-13 | Installing and assembling device for barrier remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124467.3A CN102773636B (en) | 2011-05-13 | 2011-05-13 | Installing and assembling device for barrier remover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102773636A CN102773636A (en) | 2012-11-14 |
| CN102773636B true CN102773636B (en) | 2014-08-06 |
Family
ID=47118860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110124467.3A Active CN102773636B (en) | 2011-05-13 | 2011-05-13 | Installing and assembling device for barrier remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102773636B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846838B (en) * | 2012-11-29 | 2016-12-21 | 亿和精密工业（苏州）有限公司 | Photocopier framework assembling smelting has |
| CN108340090A (en) * | 2018-01-12 | 2018-07-31 | 上海二十冶建设有限公司 | The localization method of direct connection bonnet formula waste heat boiler heavy-weight pipe tank module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US806767A (en) * | 1905-03-22 | 1905-12-12 | Francis M Bancroft | Ice-removing track-clearer. |
| US893878A (en) * | 1906-12-10 | 1908-07-21 | Joseph A Shires | Track-clearing device for railroads. |
| GB282673A (en) * | 1926-12-24 | 1928-06-14 | Jean Van De Putte | Track-clearer for motor-cars |
| CN201357294Y (en) * | 2008-12-26 | 2009-12-09 | 浙江吉利汽车有限公司 | Positioning welding mechanism for safety belt reinforcing plate assembly |
| CN201799813U (en) * | 2010-10-09 | 2011-04-20 | 株洲联诚集团有限责任公司 | Special welding fixture for electric locomotive cowcatcher |
| CN102039911A (en) * | 2009-10-20 | 2011-05-04 | 中国北车集团大同电力机车有限责任公司 | Cowcatcher |
-
2011
- 2011-05-13 CN CN201110124467.3A patent/CN102773636B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US806767A (en) * | 1905-03-22 | 1905-12-12 | Francis M Bancroft | Ice-removing track-clearer. |
| US893878A (en) * | 1906-12-10 | 1908-07-21 | Joseph A Shires | Track-clearing device for railroads. |
| GB282673A (en) * | 1926-12-24 | 1928-06-14 | Jean Van De Putte | Track-clearer for motor-cars |
| CN201357294Y (en) * | 2008-12-26 | 2009-12-09 | 浙江吉利汽车有限公司 | Positioning welding mechanism for safety belt reinforcing plate assembly |
| CN102039911A (en) * | 2009-10-20 | 2011-05-04 | 中国北车集团大同电力机车有限责任公司 | Cowcatcher |
| CN201799813U (en) * | 2010-10-09 | 2011-04-20 | 株洲联诚集团有限责任公司 | Special welding fixture for electric locomotive cowcatcher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102773636A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202591892U (en) | Assembling and welding tool for traction beam, bolster and buffer beam general assembly | |
| CN109676299A (en) | A kind of underground railway track vehicle sleeper beam general welding fixture and its welding method | |
| CN203292739U (en) | Welding tool for steering frame side beam | |
| CN102773636B (en) | Installing and assembling device for barrier remover | |
| CN207057913U (en) | Weldment positioning clamping device in a kind of laser welding | |
| CN105081654B (en) | Tool used for rapid assembly of JW4G frame | |
| CN106239015A (en) | The apparatus for welding and positioning of steel structure assembly | |
| CN211804592U (en) | Positioning and clamping device for welding steel plate | |
| CN103692124B (en) | The weld jig of front panel lower plate stiffener | |
| CN104400287A (en) | Auxiliary device for welding auxiliary frame | |
| CN205096783U (en) | H -beam location frock | |
| CN104275571A (en) | Positioning equipment for assembly welding of rear frame of loader | |
| CN203713980U (en) | Carriage transverse position limiting device for mining dump truck | |
| CN107414391A (en) | Three-dimensional column workpiece welding procedure is equipped | |
| CN102528361B (en) | Welding fixture for pipe fittings of automobile seat headrest | |
| CN102773740A (en) | Axle box body processing method and processing clamp | |
| CN207026850U (en) | A kind of container engineering top solder assembly tooling | |
| CN206047467U (en) | Group weldering integral type box soldering cramping apparatus | |
| CN103753077A (en) | Positioning device for frame side beam | |
| CN110653508B (en) | Welding anti-deformation device for swing bolster of urban rail vehicle | |
| CN210937648U (en) | Assembling device for locomotive roof of motor train unit | |
| CN203092010U (en) | Clamp for fixedly welding splicing points of steel plate seat assembly and axle housing assembly | |
| CN201792143U (en) | Air-conditioner mounting seat assembly and welding tool | |
| CN103219208A (en) | Convenient roller forming device for loading piece component | |
| CN106670704A (en) | Door seal four-corner welded seat coordinate positioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 037038 No.1 Qianjin Street, Pingcheng District, Datong City, Shanxi Province Patentee after: CRRC DATONG Co.,Ltd. Address before: 1 No. 037038, Daqing Road, Shanxi, Datong Patentee before: DATONG ELECTRIC LOCOMOTIVE Co.,Ltd. OF CNR |
|
| CP03 | Change of name, title or address |