CN103708246A - Multifunctional shunting locomotive - Google Patents
Multifunctional shunting locomotive Download PDFInfo
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- CN103708246A CN103708246A CN201310732172.3A CN201310732172A CN103708246A CN 103708246 A CN103708246 A CN 103708246A CN 201310732172 A CN201310732172 A CN 201310732172A CN 103708246 A CN103708246 A CN 103708246A
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- arm
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- telescopic boom
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Abstract
The invention discloses a multifunctional shunting locomotive which comprises a walking locomotive body, a telescopic mechanism and a tilting mechanism. The telescopic mechanism is arranged at the upper end face of a locomotive frame of the walking locomotive body, and the tilting mechanism is arranged on the upper end face of the locomotive frame of the walking locomotive body. The telescopic mechanism comprises a telescopic arm and a telescopic arm driving device which is used for driving the telescopic arm to stretch. The tilting mechanism comprises a tilting arm arranged on the locomotive frame and a tilting arm driving device used for driving the tilting arm to tilt. A pin lifting device is arranged at a working end of the tilting arm. The telescopic mechanism and the tilting mechanism are driven through an alternating-current variable frequency system for a motor, the multifunctional shunting service requirements of a non-split open locomotive and a split open locomotive are met, the novel pin lifting device with power provided by a minitype hydraulic station is arranged, pin lifting operation is carried out, and the safety of the shunting locomotive is further improved.
Description
Technical field
The present invention relates to tipper unloading system, particularly a kind of can dumping off-the-line and the multi-functional shunter of non-off-the-line open-top car.
Background technology
In existing tipper unloading system, comprise two kinds of overturning modes of off-the-line and non-off-the-line, the former need to be equipped with the shunter with pitch arm, the latter need to be equipped with the shunter with telescopic boom, and when requiring while dumping off-the-line and non-off-the-line open-top car, in prior art, can only be equipped with above-mentioned two kinds of shunters, and in existing shunter, pitch arm or telescopic boom adopt hydraulic-driven, a kind of version is that Hydraulic Station drives 2 oil cylinders, to pitch arm or telescopic boom, provide application force, reach the object of pitch arm or telescopic boom, another kind of version is counter weight construction form, pitch arm employing provides power driven rack cylinder to realize large arm by Hydraulic Station and moves, two kinds of version costs are high, slow motion, can not control by actv., pitch arm or telescopic boom hydraulic-driven need Hydraulic Station that power is provided, cost is high, maintenance capacity is large.
Therefore invent a kind of multi-functional shunter with traction off-the-line or puzzled train of vehicles that does not rely on large hydraulic station and become technical barrier urgently to be resolved hurrily.
Summary of the invention
The present invention is directed to above-mentioned technical matters, propose a kind of can dumping off-the-line and the multi-functional shunter of non-off-the-line open-top car.
For reaching above object, be achieved through the following technical solutions:
Multi-functional shunter, comprising: walking vehicle body, is assemblied in the telescoping mechanism of walking vehicle body vehicle frame upper surface and is assemblied in the luffing mechanism of walking vehicle body vehicle frame upper surface;
Telescoping mechanism, comprising: telescopic boom and for driving the flexible telescopic boom actuating device of telescopic boom;
Luffing mechanism, comprising: rotate and to be assemblied in the pitch arm of vehicle frame and for driving the pitch arm actuating device of pitch arm pitching;
Pitch arm work end is provided with carries pin assembly;
Carry pin assembly, comprising: micro hydraulic station, be fixed in pitch arm and the hinged L-type swing arm that is fixed on hydraulic driving oil cylinder expansion link end of the hydraulic driving oil cylinder being connected by pipeline with micro hydraulic station and one end;
L-type swing arm is rotated and is assemblied in pitch arm upper end fixed bearing by rotating shaft, and hydraulic driving oil cylinder telescopic drive L-type swing arm is around L-type swing arm and fixed bearing assembling rotating shaft pitching;
In pitch arm, be provided with detection and limit element for detection of L-type swing arm amplitude of fluctuation;
The L-type swing arm other end is provided with contact rope, and connection tether end is lifted with pin;
Micro hydraulic station is arranged in pitch arm, and micro hydraulic station connects by pipeline with the corresponding hydraulic fluid port of hydraulic driving oil cylinder, and micro hydraulic station is to driving oil cylinder that power is provided, and realizes the stretching out and retract action of expansion link of hydraulic driving oil cylinder; Hydraulic driving oil cylinder one end and pitch arm are hinged, and the other end and L-type swing arm are hinged, and L-type swing arm middle part is hinged with fixed bearing in pitch arm, and the expansion link of one end and hydraulic driving oil cylinder is hinged, the other end with contact rope be fixedly connected with; The other end of contact rope is fixedly connected with pin;
When beam hanger stretches out in driving oil cylinder, according to lever principle, by L-type swing arm and contact rope, realize mentioning of pin, thereby reach the object of untiing hitch in open-top car hitch and pitch arm; When in driving oil cylinder, beam hanger is retracted out, according to lever principle, by L-type swing arm, move, pin is according to gravity principle, freely falls back in pitch arm in hitch, thereby reaches the object that hitch in open-top car hitch and pitch arm is hung by company.
Detecting element, by detecting the position of L-type swing arm, reaches the object that the state of pin is detected.
Telescopic boom actuating device, comprising: telescopic boom drive motor, changes into reciprocating pantograph linkage and be assemblied in the Telescopic rotating axle on vehicle frame with rotating by rotatablely moving;
On telescopic boom drive motor, be equipped with telescopic brake and scalable encoder device;
Telescopic boom drive motor drives the rotation of Telescopic rotating axle;
Pantograph linkage round end is connected with Telescopic rotating axle and is synchronizeed and rotate by key, and pantograph linkage crank motion end and telescopic boom are hinged;
Telescopic boom drive motor and Telescopic rotating axle pass through spline joint, Telescopic rotating axle is connected by flat key with pantograph linkage round end, by telescopic boom drive motor, drive pantograph linkage round end to rotate, and then drive whole pantograph linkage torsion to be converted into (linearity) crank motion, and then realize stretching out and retraction of telescopic boom;
Telescopic brake plays safety guard-safeguard effect, and scalable encoder device detects the position of telescopic boom in real time, and feeds back to PLC and carry out telescopic boom drive motor to control; Telescopic boom drive motor adopts alternating-current variable frequency motor, by Frequency Converter Control, realizes the reliable and stable of telescopic boom motion; Telescopic boom drive motor also can be substituted by conventional drive array modes such as motor, reductors;
Pitch arm actuating device, comprising: pitch arm drive motor, and pitch link mechanism and rotation are assemblied in the pitching S. A. on vehicle frame;
On pitch arm drive motor, be equipped with pitching drg and pitching coder;
Pitch arm drive motor drives rotary luffing S. A.;
Pitch link mechanism by: dynamic rotation bar and lifting arm are hinged to be formed;
Pitch link mechanism dynamic rotation bar and pitching S. A. are connected and are synchronizeed rotation by key, and the lifting arm other end and pitch arm are hinged;
Pitching drg, pitching coder are arranged on pitch arm drive motor, pitch arm drive motor and pitching S. A. pass through spline joint, to guarantee the stability of carry-over moment, pitching S. A. is connected by flat key with pitch link mechanism dynamic rotation bar, safe transfer moment of torsion; Pitch link mechanism lifting arm and pitch arm hinged (be pitch link mechanism by, pipe link and drive spindle form; ), and then the pitching that the transmission by moment of torsion realizes pitch arm is turned round; Distraction procedure is: pitch arm drive motor drives pitch link mechanism revolving bar to rotate, and revolving bar further drives lifting arm rotation, and lifting arm drives pitch arm to carry out pitching action; As preferred lifting arm, can be processed as arcuation bar herein, to reduce lifting arm and revolving bar relative motion corner; It is identical with pitch link mechanism integral-rotation direction that above-mentioned action realizes the hand of rotation that need to guarantee pitch arm;
Pitching drg plays safety guard-safeguard effect, and pitching coder detects the rotary position of pitch arm in real time, and feeds back to PLC and carry out pitch arm drive motor to control; Pitch arm drive motor adopts alternating-current variable frequency motor, by Frequency Converter Control, guarantees that pitch arm is rotating reliable and stable; Pitch arm drive motor also can be substituted by conventional drive array modes such as motor, reductors.
This multi-functional shunter is only supporting telescoping mechanism or luffing mechanism also, meets shunting service requirement.
To sum up the present invention has the following advantages:
(1) adopt an equipment can realize the shunter operation of off-the-line open-top car or non-off-the-line open-top car;
(2) compact conformation; Maintenance is little; Telescopic boom action and pitch arm action adopt motor to drive, compact conformation, and space is large, easy to maintenance;
(3) adopt alternating frequency conversion technique, control in real time large arm driving condition, efficiency is high;
(4) economize on the use of funds; The drive form cost of motor-driven scheme can significantly lower.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification sheets, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The present invention is totally 6 width accompanying drawings, wherein:
Fig. 1 is master layout of the present invention.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is telescopic boom driving device structure schematic diagram of the present invention.
Fig. 4 is that the B of Fig. 1 is to view.
Fig. 5 is pitch arm driving device structure schematic diagram of the present invention.
Fig. 6 is the C part partial enlarged drawing of Fig. 1.
In figure: 1, vehicle frame, 2, telescopic boom, 3, retractable driving device, 3.1, pantograph linkage, 3.2, telescopic boom drive motor, 3.3, telescopic brake, 3.4, scalable encoder device, 3.5, Telescopic rotating axle, 4, pitch arm, 5, pitch arm actuating device, 5.1, pitch link mechanism, 5.2, pitch arm drive motor, 5.3, pitching drg, 5.4, pitching coder, 5.5, pitching S. A., 6, carry pin assembly, 6.1, micro hydraulic station, 6.2, pipeline, 6.3, limit element, 6.4, hydraulic driving oil cylinder, 6.5, L-type swing arm, 6.6, contact rope, 6.7, pin, 6.8, fixed bearing.
The specific embodiment
Multi-functional shunter as shown in Figure 1, comprising: walking vehicle body, is assemblied in the telescoping mechanism of walking vehicle body vehicle frame 1 upper surface and is assemblied in the luffing mechanism of walking vehicle body vehicle frame 1 upper surface;
Telescoping mechanism, comprising: telescopic boom 2 and for driving the flexible telescopic boom actuating device 3 of telescopic boom 2;
Luffing mechanism, comprising: rotate and to be assemblied in the pitch arm 4 of vehicle frame 1 and for driving the pitch arm actuating device 5 of pitch arm 4 pitching;
Carry as shown in Figure 6 pin assembly 6, comprise: micro hydraulic station 6.1, be fixed in pitch arm 4 and the hinged L-type swing arm 6.5 that is fixed on hydraulic driving oil cylinder 6.4 expansion link ends of the hydraulic driving oil cylinder 6.4 being connected by pipeline 6.2 with micro hydraulic station 6.1 and one end;
L-type swing arm 6.5 is rotated and is assemblied on pitch arm 4 upper end fixed bearings 6.8 by rotating shaft, and hydraulic driving oil cylinder 6.4 telescopic drive L-type swing arms 6.5 are around L-type swing arm 6.5 and fixed bearing 6.8 assembling rotating shaft pitchings;
In pitch arm 4, be provided with detection and limit element 6.3 for detection of L-type swing arm 6.5 amplitudes of fluctuation, detect the pitching amplitude mainly for detection of pitch arm 4, the spacing pitching amplitude that is mainly used in limiting pitch arm 4;
L-type swing arm 6.5 other ends are provided with contact rope 6.6, and contact rope 6.6 ends are lifted with pin 6.7;
Micro hydraulic station 6.1 is arranged in pitch arm 4, micro hydraulic station 6.1 connects by pipeline 6.2 with the corresponding hydraulic fluid port of hydraulic driving oil cylinder 6.4,6.1 pairs, micro hydraulic station drives oil cylinder 6.4 that power is provided, and realizes the stretching out and retract action of expansion link of hydraulic driving oil cylinder 6.4; Hydraulic driving oil cylinder 6.4 one end and pitch arm 4 are hinged, the other end and L-type swing arm 6.5 are hinged, L-type swing arm 6.5 middle parts are hinged with fixed bearing 6.8 in pitch arm 4, and the expansion link of one end and hydraulic driving oil cylinder 6.4 is hinged, the other end with contact rope and 6.6 be fixedly connected with; The other end of contact rope 6.6 is fixedly connected with pin 6.7;
When beam hanger stretches out in driving oil cylinder 6.4, according to lever principle, by L-type swing arm 6.5 and contact rope 6.6, realize mentioning of pin 6.7, thereby reach the object of untiing hitch in open-top car hitch and pitch arm 4; When in driving oil cylinder 6.4, beam hanger is retracted out, according to lever principle, by 6.5 actions of L-type swing arm, pin 6.7 is according to gravity principle, freely falls back in pitch arm 4 in hitch, thereby reaches the object that hitch in open-top car hitch and pitch arm 4 is hung by company.
Detecting element 6.3, by detecting the position of L-type swing arm 6.5, reaches the object that the state of pin 6.7 is detected.
Telescopic boom actuating device 3 as shown in Figures 2 and 3, comprising: telescopic boom drive motor 3.2, changes into reciprocating pantograph linkage 3.1 and rotation and be assemblied in the Telescopic rotating axle 3.5 on vehicle frame 1 by rotatablely moving;
On telescopic boom drive motor 3.2, be equipped with telescopic brake 3.3 and scalable encoder device 3.4;
Telescopic boom drive motor 3.2 drives 3.5 rotations of Telescopic rotating axle;
Pantograph linkage 3.1 round ends are connected and are synchronizeed rotation with Telescopic rotating axle 3.5 by key, and pantograph linkage 3.1 crank motion ends and telescopic boom 2 are hinged;
Telescopic boom drive motor 3.2 passes through spline joint with Telescopic rotating axle 3.5, to guarantee the stability of carry-over moment, Telescopic rotating axle 3.5 is connected by flat key with pantograph linkage 3.1 round ends, safe transfer moment of torsion, by telescopic boom drive motor 3.2, drive pantograph linkage 3.1 round ends to rotate, and then drive whole pantograph linkage 3.1 torsion to be converted into (linearity) crank motion, and then realize stretching out and retraction of telescopic boom 2;
Telescopic brake 3.3 plays safety guard-safeguard effect, and scalable encoder device 3.4 detects the position of telescopic boom 2 in real time, and feeds back to PLC and carry out telescopic boom drive motor 3.2 to control; Telescopic boom drive motor 3.2 adopts alternating-current variable frequency motor, by Frequency Converter Control, realizes the reliable and stable of telescopic boom 2 motions; Telescopic boom drive motor 3.2 also can be substituted by conventional drive array modes such as motor, reductors;
Pitch arm actuating device 5 as shown in Figure 4 and Figure 5, comprising: pitch arm drive motor 5.2, and pitch link mechanism 5.1 and rotation are assemblied in the pitching S. A. 5.5 on vehicle frame 1;
On pitch arm drive motor 5.2, be equipped with pitching drg 5.3 and pitching coder 5.4;
Pitch arm drive motor 5.2 drives rotary luffing S. A. 5.5;
Pitch link mechanism 5.1 by: dynamic rotation bar and lifting arm are hinged to be formed;
Pitch link mechanism 5.1 dynamic rotation bars and pitching S. A. 5.5 are connected and are synchronizeed rotation by key, and the lifting arm other end and pitch arm 5 are hinged;
Pitching drg 5.3, pitching coder 5.4 are arranged on pitch arm drive motor 5.2, pitch arm drive motor 5.2 passes through spline joint with pitching S. A. 5.5, to guarantee the stability of carry-over moment, pitching S. A. 5.5Yu pitch link mechanism 5.1 dynamic rotation bars connect by flat key, safe transfer moment of torsion; Pitch link mechanism 5.1 lifting arms and pitch arm 4 hinged (be pitch link mechanism 5.1 by, pipe link 5.7 and drive spindle 5.6 form; ), and then the pitching that the transmission by moment of torsion realizes pitch arm 4 is turned round, distraction procedure is: pitch arm drive motor 5.2 drives pitch link mechanism 5.1 revolving bars to rotate, and revolving bar further drives lifting arm rotation, and lifting arm drives pitch arm 4 to carry out pitching action; As preferred lifting arm, can be processed as arcuation bar herein, to reduce lifting arm and revolving bar relative motion corner; It is identical with pitch link mechanism 5.1 integral-rotation directions that above-mentioned action realizes the hand of rotation that need to guarantee pitch arm 4;
Pitching drg 5.3 plays safety guard-safeguard effect, and pitching coder 5.4 detects the rotary position of pitch arm 4 in real time, and feeds back to PLC and carry out pitch arm drive motor 5.2 to control; Pitch arm drive motor 5.2 adopts alternating-current variable frequency motor, by Frequency Converter Control, guarantees that pitch arm 4 is rotating reliable and stable; Pitch arm drive motor 5.2 also can be substituted by conventional drive array modes such as motor, reductors.
This multi-functional shunter is only supporting telescoping mechanism or luffing mechanism also, meets shunting service requirement.
To sum up the present invention has the following advantages:
(1) adopt an equipment can realize the shunter operation of off-the-line open-top car or non-off-the-line open-top car;
(2) compact conformation; Maintenance is little; Telescopic boom action and pitch arm action adopt motor to drive, compact conformation, and space is large, easy to maintenance;
(3) adopt alternating frequency conversion technique, control in real time large arm driving condition, efficiency is high;
(4) economize on the use of funds; The drive form cost of motor-driven scheme can significantly lower.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art are not departing within the scope of technical solution of the present invention, when utilizing, appeal the equivalent embodiment that the technology contents disclosing is made a little change or is modified to equivalent variations, in every case be the content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. multi-functional shunter, is characterized in that: comprise that walking vehicle body is assemblied in the telescoping mechanism of walking vehicle body vehicle frame (1) upper surface and is assemblied in the luffing mechanism of walking vehicle body vehicle frame (1) upper surface;
Described telescoping mechanism, comprising: telescopic boom (2) and for driving the flexible telescopic boom actuating device (3) of telescopic boom (2);
Described luffing mechanism, comprising: rotate and to be assemblied in the pitch arm (4) of vehicle frame (1) and for driving the pitch arm actuating device (5) of pitch arm (4) pitching;
Described pitch arm (4) work end is provided with carries pin assembly (6);
The described pin assembly (6) of carrying, comprise: micro hydraulic station (6.1), be fixed on the hinged L-type swing arm (6.5) that is fixed on hydraulic driving oil cylinder (6.4) expansion link end of hydraulic driving oil cylinder (6.4) and one end that pitch arm (4) is upper and be connected by pipeline (6.2) with micro hydraulic station (6.1);
Described L-type swing arm (6.5) is rotated and is assemblied in pitch arm (4) upper end fixed bearing (6.8) above by rotating shaft, and hydraulic driving oil cylinder (6.4) telescopic drive L-type swing arm (6.5) is around L-type swing arm (6.5) and fixed bearing (6.8) assembling rotating shaft pitching;
In described pitch arm (4), be provided with detection and limit element (6.3) for detection of L-type swing arm (6.5) amplitude of fluctuation;
Described L-type swing arm (6.5) other end is provided with contact rope (6.6), and described contact rope (6.6) end is lifted with pin (6.7).
2. multi-functional shunter according to claim 1, it is characterized in that: described telescopic boom actuating device (3), comprise: telescopic boom drive motor (3.2), will rotatablely move changes into reciprocating pantograph linkage (3.1) and rotation is assemblied in the Telescopic rotating axle (3.5) on vehicle frame (1);
On described telescopic boom drive motor (3.2), be equipped with telescopic brake (3.3) and scalable encoder device (3.4);
Described telescopic boom drive motor (3.2) drives Telescopic rotating axle (3.5) rotation;
Described pantograph linkage (3.1) round end is connected and is synchronizeed rotation with Telescopic rotating axle (3.5) by key, and pantograph linkage (3.1) crank motion end and telescopic boom (2) are hinged.
3. multi-functional shunter according to claim 1, it is characterized in that: described pitch arm actuating device (5), comprise: pitch arm drive motor (5.2), pitch link mechanism (5.1) and rotation are assemblied in the pitching S. A. (5.5) on vehicle frame (1);
On described pitch arm drive motor (5.2), be equipped with pitching drg (5.3) and pitching coder (5.4);
Described pitch arm drive motor (5.2) drives rotary luffing S. A. (5.5);
Described pitch link mechanism (5.1) by: pipe link (5.7) and drive spindle (5.6) form;
Described pitch link mechanism (5.1) dynamic rotation bar and pitching S. A. (5.5) are connected and are synchronizeed rotation by key, and the lifting arm other end and pitch arm (5) are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732172.3A CN103708246A (en) | 2013-12-26 | 2013-12-26 | Multifunctional shunting locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732172.3A CN103708246A (en) | 2013-12-26 | 2013-12-26 | Multifunctional shunting locomotive |
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| Publication Number | Publication Date |
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| CN103708246A true CN103708246A (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310732172.3A Pending CN103708246A (en) | 2013-12-26 | 2013-12-26 | Multifunctional shunting locomotive |
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| RU2232095C2 (en) * | 2002-07-01 | 2004-07-10 | Оао "Ормето-Юумз" | Pusher to deliver gondola car to car tipper |
| CN201056407Y (en) * | 2007-06-28 | 2008-05-07 | 海沃机械(扬州)有限公司 | Automatic discharge device for plate trailer |
| CN201990273U (en) * | 2011-03-30 | 2011-09-28 | 鞍钢股份有限公司 | Elastic pin lifting mechanism of car puller |
| CN102689784A (en) * | 2012-04-29 | 2012-09-26 | 江苏天奇物流系统工程股份有限公司 | Motor connecting rod type telescopic carriage |
| CN103144977A (en) * | 2013-03-27 | 2013-06-12 | 大连华锐重工集团股份有限公司 | Dual-purpose through type tippler unloading system and operation method thereof |
| CN203143725U (en) * | 2013-03-27 | 2013-08-21 | 大连华锐重工集团股份有限公司 | Dual-purpose through-type unloading system of car dumper |
| CN203173535U (en) * | 2012-12-06 | 2013-09-04 | 大连三峰港口机械设备有限公司 | Novel double-arm locating vehicle |
| CN203638795U (en) * | 2013-12-26 | 2014-06-11 | 大连华锐重工集团股份有限公司 | Multifunctional shunting locomotive |
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2013
- 2013-12-26 CN CN201310732172.3A patent/CN103708246A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2232095C2 (en) * | 2002-07-01 | 2004-07-10 | Оао "Ормето-Юумз" | Pusher to deliver gondola car to car tipper |
| CN201056407Y (en) * | 2007-06-28 | 2008-05-07 | 海沃机械(扬州)有限公司 | Automatic discharge device for plate trailer |
| CN201990273U (en) * | 2011-03-30 | 2011-09-28 | 鞍钢股份有限公司 | Elastic pin lifting mechanism of car puller |
| CN102689784A (en) * | 2012-04-29 | 2012-09-26 | 江苏天奇物流系统工程股份有限公司 | Motor connecting rod type telescopic carriage |
| CN203173535U (en) * | 2012-12-06 | 2013-09-04 | 大连三峰港口机械设备有限公司 | Novel double-arm locating vehicle |
| CN103144977A (en) * | 2013-03-27 | 2013-06-12 | 大连华锐重工集团股份有限公司 | Dual-purpose through type tippler unloading system and operation method thereof |
| CN203143725U (en) * | 2013-03-27 | 2013-08-21 | 大连华锐重工集团股份有限公司 | Dual-purpose through-type unloading system of car dumper |
| CN203638795U (en) * | 2013-12-26 | 2014-06-11 | 大连华锐重工集团股份有限公司 | Multifunctional shunting locomotive |
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Application publication date: 20140409 |