CN112373493B - Electric traction locomotive for blast furnace tapping - Google Patents
Electric traction locomotive for blast furnace tapping Download PDFInfo
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- CN112373493B CN112373493B CN202011354180.5A CN202011354180A CN112373493B CN 112373493 B CN112373493 B CN 112373493B CN 202011354180 A CN202011354180 A CN 202011354180A CN 112373493 B CN112373493 B CN 112373493B
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- Prior art keywords
- hemispherical
- bearing
- locomotive
- groups
- bottom plate
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
- B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides an electric traction locomotive for blast furnace tapping, which comprises a lower locomotive body, an upper locomotive body and two groups of supporting components, wherein the lower locomotive body comprises two bearing operation frames, each bearing operation frame comprises two groups of wheel pairs and a bogie arranged on the two groups of wheel pairs, each bearing operation frame is connected with the upper locomotive body through one group of supporting components, each supporting component comprises a center bearing and four side bearings, the four side bearings are respectively positioned at two sides of the center bearing, each center bearing comprises a hemispherical hemisphere and a hemispherical hole matched with the hemispherical, the hemispherical is a hemispherical bulge protruding out of the top of the bogie, the hemispherical hole is a hemispherical groove arranged at the bottom of the upper locomotive body, and the hemispherical body is positioned in the hemispherical hole. The arrangement of the hemispherical body and the hemispherical holes of the center bearing enables the upper car body and the lower car body to rotate relatively, the side bearing balances the load, and the spring has a buffer effect, so that the locomotive is more stable and stable in operation, and is suitable for the locomotive to be used for drawing high-temperature molten iron.
Description
Technical Field
The invention relates to the field of steel, in particular to an electric traction locomotive for blast furnace tapping.
Background
In the iron and steel smelting industry, many iron and steel works firstly make iron, then make steel by taking the obtained high-temperature molten iron as a raw material, and generally, the iron making system and the steel making system are separated by a certain distance, so that the molten iron needs to be transported. The tapping of the blast furnace is a continuous process with long time, after tapping of one ladle of molten iron is finished, the locomotive needs to move the molten iron ladle once and wait ten to fifteen minutes to pull or push the next ladle of molten iron, and the process needs to start up and wait for the locomotive to quickly respond in emergency. Therefore, if the internal combustion engine is used, more energy is wasted in the starting-up waiting process. Part of steel plants adopt shunting winch traction systems. The traction system consists of a fixed winding device, a steel cable, a shunting winch, a carrier roller, a guide wheel and the like, but the reliability and the bearing performance of equipment of most winch systems are poor.
Disclosure of Invention
The invention provides an electric traction locomotive for blast furnace tapping, which aims at the problems existing in the prior art, wherein the lower locomotive body comprises two bearing running frames, so that the bearing capacity and stability of the locomotive body are stronger, the two bearing running frames are connected with the upper locomotive body through a supporting component, the supporting component comprises a center bearing and four side bearings, the arrangement of a hemispherical body of the center bearing and hemispherical holes enables the upper locomotive body and the lower locomotive body to relatively rotate, meanwhile, the four side bearings on two sides balance loads on one hand, and on the other hand, the design of springs plays a buffering role, so that the locomotive is more stable and stable in running, and the electric traction locomotive is suitable for a scene of the locomotive for traction of high-temperature molten iron.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an electric traction locomotive for blast furnace tapping, including the lower part automobile body, the upper portion automobile body, two sets of supporting component and towrope mechanism, the lower part automobile body includes two bears the operation frame, bear the operation frame and include two sets of wheel pairs and install the bogie on two sets of wheel pairs, every bears the operation frame and passes through a set of supporting component and connect the upper portion automobile body, the supporting component includes center bearing and four side bearings, four side bearings are located the both sides of center bearing respectively, the center bearing includes hemispherical and the hemispherical hemisphere hole with hemisphere adaptation, the hemispherical is a hemispherical arch at protruding bogie top, the hemisphere hole is a hemispherical recess of locating upper portion automobile body bottom, the hemisphere is located the hemisphere downthehole, the upper portion automobile body is equipped with door or lid in and out its indoor.
As a further improvement of the above technical scheme:
preferably, the upper vehicle body comprises a front counterweight chamber, an electric control chamber and a rear counterweight chamber which are connected in sequence. The door is arranged on the electric control chamber.
The locomotive further comprises a driving mechanism, wherein the driving mechanism comprises a driving motor, a gearbox, a brake and a clutch, and the gearbox is positioned at the bottom of the bogie.
Preferably, the locomotive further comprises two sets of couplers, and the two sets of couplers are respectively positioned at two ends of the running direction of the lower locomotive body.
Preferably, the two sets of couplers are mounted on the two load-bearing running frames, respectively.
Preferably, the side bearing includes a side bearing spring, both ends of which are connected to the bottom of the upper body and the top of the bogie, respectively.
The beneficial effects of the invention are as follows: the lower car body comprises two bearing running frames, so that the bearing capacity and stability of the car body are stronger, the two bearing running frames and the upper car body are connected through the supporting component, the supporting component comprises a center bearing and four side bearings, the upper car body and the lower car body can relatively rotate due to the arrangement of the hemispherical body of the center bearing and the hemispherical holes, meanwhile, the four side bearings on two sides balance loads on one hand, and on the other hand, the design of springs plays a role of buffering, so that the locomotive is more stable and stable in running, and the device is suitable for a scene that the locomotive is used for drawing high-temperature molten iron.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a schematic view of another view structure according to an embodiment of the present invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
An electric traction locomotive for blast furnace tapping, as shown in fig. 1 and 2, comprises a lower car body 1, an upper car body 2, a supporting assembly, a driving mechanism, a coupler 5, a measuring wheel device 6 and a towing rope mechanism.
The lower body 1 comprises two carrying operation frames, each carrying operation frame comprises two groups of wheel pairs 11 and a bogie 12 arranged on the two groups of wheel pairs 11, and the installation mode of the bogie 12 on the wheel pairs 11 is the same as the installation mode of the body on the chassis in the prior art, and is not repeated here. The wheel set 11 comprises two wheels and axles connecting the two wheels, i.e. four wheels per load-bearing running frame. Preferably, the driving wheel is a wheel set 11 of one bearing running frame, and the wheel set 11 of the other bearing running frame is a driven driving wheel.
The bogie 12 includes a bogie body 121, multiple sets of load beams 123, and multiple wheel set buffer spring sets 122. The number of groups of the spandrel girder 123 is the same as the number of wheels, namely, each bearing running frame is provided with four spandrel girders 123, and the four spandrel girders 123 are respectively positioned on the four wheels. The spandrel girder 123 is connected with the frame body 121 through a plurality of wheel set buffer spring groups 122, specifically, each spandrel girder 123 is connected with the frame body 121 through four wheel set buffer spring groups 122, the four wheel set buffer spring groups 122 are located in the same plane, when the locomotive runs straight, the plane where the four wheel set buffer spring groups 122 are located is parallel or coincident with the plane where the wheels are located, and one side of the wheel shaft is respectively provided with two buffer spring groups 122.
The wheel set buffer spring set 122 includes a bolt, a first spring, a second spring, an upper nut, and a lower nut. One end of the bolt passes through the connecting plate of the frame body 121 upwards and then is connected with the upper nut, and the other end of the bolt passes through the spandrel girder 123 downwards and then is connected with the lower nut. The bolts of the four wheel set buffer spring sets 122 are arranged in parallel at intervals. The first spring and the second spring are both sleeved outside the bolt, the first spring is located between the upper nut and the spandrel girder 123, and specifically, the first spring is located between the frame body 121 connecting plate and the spandrel girder 123. The second spring is located between the lower nut and the spandrel girder 123. The spring wire diameter of the first spring is greater than the spring wire diameter of the second spring.
The spandrel girder 123 includes a planar top plate, a planar first bottom plate, and two curved second bottom plates. One second bottom plate, first bottom plate and another second bottom plate connect gradually the bottom plate that forms spandrel girder 123, and the roof is located the top of bottom plate, roof with the bottom plate passes through the flat board and connects. The two second bottom plates are symmetrically arranged relative to the first bottom plate, the second bottom plates are inwards concave towards the direction of the top plate, specifically, one end of each second bottom plate is connected with the first bottom plate, and the other end of each second bottom plate obliquely upwards extends towards the direction away from the first bottom plate and is connected with the flat plate.
The lower ends of the bolts of the wheel set buffer spring sets 122 sequentially penetrate through the top plate and the second bottom plate, so that the wheel set buffer spring sets 122 do not affect wheels, and meanwhile, interference of the wheel set buffer spring sets 122 is avoided due to the curved surface design of the second bottom plate. The design of the wheel set buffer spring group 122 and the spandrel girder 123 realizes a buffer and shock absorption effect while guaranteeing the supporting effect of the spandrel girder 123, so that the lower vehicle body 1 is more stable.
The upper body 2 includes a front weight compartment 21, an electric control compartment 22, and a rear weight compartment 23, which are connected in this order. The electric control room 22 comprises a main control cabinet, a driving cabinet, a winding mechanism cabinet, a hydraulic station cabinet and other different functional room areas. The electric control chamber 22 is provided with a door to and from its interior.
The support assemblies are provided with two groups for connecting the upper body 2 and two load-bearing running frames, each of which is connected to the upper body 2 by a group of support assemblies.
The support assembly comprises a center bearing 31 and four side bearings 32, the four side bearings 32 being located on either side of the center bearing 31, and further the four side bearings 32 being located at the four vertices of a rectangle with the center bearing 31 being located at the center of the rectangle. The center bearing 31 includes a hemispherical hemisphere and a hemispherical hole fitted to the hemisphere. The hemisphere is located at the top of the frame body 121, and the hemispherical hole is formed at the bottom of the upper vehicle body 2, in other words, the hemisphere is a hemispherical protrusion protruding from the top of the frame body 121, and the hemispherical hole is a hemispherical recess. During installation, the hemispherical body is positioned in the hemispherical hole, so that the upper vehicle body 2 can rotate relative to the lower vehicle body 1, and the hemispherical body adapts to the tiny change of the running direction, so that the upper vehicle body 2 is more stable during running.
The side bearing 32 includes side bearing springs, both ends of which are connected to the bottom of the upper body 2 and the top of the bogie 12, respectively.
Based on the structure, the locomotive is a four-axis driving locomotive.
The drive mechanism includes a drive motor, a gearbox 41, a brake and a clutch, and the components of the drive mechanism may be constructed in the prior art. The gearbox 41 is located at the bottom of the bogie 12. The drive mechanism or gearbox 41 may be arranged in several sets, each connected to a different wheel set 11, as required.
The two sets of couplers 5 are respectively located at two ends of the running direction of the lower car body 1, and specifically, the two sets of couplers 5 are respectively installed on the two bearing running frames.
The measuring wheel device 6 is mounted at the bottom end of a load-bearing running frame, in particular at the bottom end of the frame body 121. Preferably, the measuring wheel device 6 is mounted at the bottom end of the load-bearing running frame where the driving wheel is located. The driving wheel is located on a carrier running frame which is more stable in running than the other carrier running frame, and the wheel set 11 of the other carrier running frame may slip, i.e. the driven wheel may slip. Therefore, the measuring wheel device 6 is arranged at the bottom end of the bearing running frame where the driving wheel is arranged, so that the measuring wheel device 6 is more stable, and the speed measurement is more effectively and accurately carried out.
In order to facilitate the forward and backward movement of the locomotive, it is sometimes necessary to replace the driving and driven driving wheels, i.e. to switch the wheel set 11 directly connected to the driving motor, in order to adapt to this situation, to keep the measuring wheel device 6 arranged at the bottom end of the carrying running frame where the driving wheel is located, a plurality of measuring wheel devices 6 may be arranged, respectively mounted at the bottom ends of the carrying running frames, and to activate the measuring wheel devices 6 arranged at the bottom ends of the carrying running frames where the driving wheel is located.
The measuring wheel device 6 comprises a connecting plate, a hinged plate, a mounting shaft, a supporting shaft, a limiting plate, a pressing spring, a wheel body and a positioning encoder. The upper end of the connection plate is connected with the frame body 121, the lower end of the connection plate is hinged with the hinged plate, and in particular, the connection plate is hinged with the hinged plate through a hinge shaft.
The middle part of the hinged plate is provided with a limiting plate, one end of the limiting plate is fixedly connected with the middle part of the hinged plate, the other end of the limiting plate extends in an overhanging manner, the limiting plate is not perpendicular to the hinged plate, namely, an included angle between one side of the limiting plate and the hinged plate is an acute angle, an included angle between the other side of the limiting plate and the hinged plate is an obtuse angle, and the sum of the acute angle and the obtuse angle is 180 degrees. The limiting plate is provided with a through hole.
One end of the supporting shaft is fixedly connected with the bottom of the connecting plate, the other end of the supporting shaft penetrates through the through hole in the limiting plate and then is connected with a limiting block, the outer diameter of the limiting block is larger than that of the supporting shaft, and the supporting shaft is prevented from slipping from the through hole. Specifically, one end of the supporting shaft, which is connected with the connecting plate, is positioned on one side of the obtuse angle, and the other end of the supporting shaft is positioned on one side of the acute angle.
The pressing spring is sleeved outside the supporting shaft, is positioned between the connecting plate and the limiting plate, and is fixedly connected with the bottom of the connecting plate and the limiting plate at one end.
One end of the hinged plate is hinged with the connecting plate, the other end of the hinged plate is connected with the mounting shaft, the wheel body and the positioning encoder are respectively mounted at two ends of the mounting shaft, the wheel body is rotatably mounted on the mounting shaft, and the positioning encoder is connected with the wheel body and can detect the rotating speed of the wheel body.
Based on the structure, when the locomotive is used, the wheel body contacts with the running guide rail of the locomotive, and due to the elastic force of the downward-pressing spring, the wheel body can be tightly contacted with the running guide rail, so that the wheel body follows the locomotive to rotate along the guide rail.
The towing mechanism comprises a winding roll, a towing drive motor, a towing speed reducer and a wire sliding device, and all parts of the towing mechanism can adopt the structure in the prior art.
Finally, what is necessary here is: the above embodiments are only for further detailed description of the technical solutions of the present invention, and should not be construed as limiting the scope of the present invention, and some insubstantial modifications and adjustments made by those skilled in the art from the above description of the present invention are all within the scope of the present invention.
Claims (6)
1. An electric traction locomotive for blast furnace tapping, which is characterized in that: the vehicle comprises a lower vehicle body (1), an upper vehicle body (2), two groups of supporting components and a towing mechanism, wherein the lower vehicle body (1) comprises two bearing running frames, each bearing running frame comprises two groups of wheel pairs (11) and a bogie (12) arranged on the two groups of wheel pairs (11), each bearing running frame is connected with the upper vehicle body (2) through one group of supporting components, each supporting component comprises a center bearing (31) and four side bearings (32), the four side bearings (32) are respectively positioned at two sides of the center bearing (31), the center bearing (31) comprises a hemispherical hemisphere and hemispherical holes matched with the hemispherical body, the hemispherical body is a hemispherical protrusion protruding out of the top of the bogie (12), the hemispherical holes are hemispherical grooves arranged at the bottom of the upper vehicle body (2), the hemispherical body is positioned in the hemispherical holes, and the upper vehicle body (2) is provided with doors for entering and exiting from the inside of the hemispherical holes;
the wheel set (11) comprises two wheels, the bogie (12) comprises a frame body (121), four groups of bearing beams (123) and a plurality of wheel set buffer spring groups (122), the four groups of bearing beams (123) are respectively positioned on the four wheels of the two groups of wheel sets (11), and the bearing beams (123) are connected with the frame body (121) through the plurality of wheel set buffer spring groups (122);
each group of spandrel girder (123) is connected with the frame body (121) through four wheel set buffer spring groups (122);
the wheel set buffer spring sets (122) comprise bolts, first springs, second springs, upper nuts and lower nuts, one ends of the bolts upwards penetrate through connecting plates of the frame body (121) and then are connected with the upper nuts, the other ends of the bolts downwards penetrate through bearing beams (123) and then are connected with the lower nuts, the bolts of the four wheel set buffer spring sets (122) on each bearing beam (123) are arranged at intervals in parallel, the first springs and the second springs are sleeved outside the bolts, the first springs are located between the connecting plates of the frame body (121) and the bearing beams (123), and the second springs are located between the lower nuts and the bearing beams (123);
the bearing beam (123) comprises a planar top plate, a planar first bottom plate and two curved second bottom plates, one second bottom plate, the first bottom plate and the other second bottom plate are sequentially connected to form the bottom plate of the bearing beam (123), the top plate is positioned above the bottom plate, the top plate is connected with the bottom plate through a flat plate, the two second bottom plates are symmetrically arranged relative to the first bottom plate, and the second bottom plates are concave towards the direction of the top plate; the lower ends of the bolts of the wheel set buffer spring groups (122) sequentially penetrate through the top plate and the second bottom plate.
2. The traction locomotive of claim 1, wherein: the upper vehicle body (2) comprises a front counterweight chamber (21), an electric control chamber (22) and a rear counterweight chamber (23) which are sequentially connected, and the door is arranged on the side surface of the electric control chamber (22).
3. The traction locomotive of claim 1, wherein: the locomotive further comprises a driving mechanism, wherein the driving mechanism comprises a driving motor, a gearbox (41), a brake and a clutch, and the gearbox (41) is positioned at the bottom of the bogie (12).
4. The traction locomotive of claim 1, wherein: the locomotive further comprises two sets of couplers (5), and the two sets of couplers (5) are respectively positioned at two ends of the running direction of the lower car body (1).
5. The traction locomotive of claim 4 wherein: the two sets of couplers (5) are respectively arranged on the two bearing running frames.
6. The traction locomotive of claim 1, wherein: the side bearing (32) comprises a side bearing spring, the two ends of which are respectively connected with the bottom of the upper car body (2) and the top of the bogie (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354180.5A CN112373493B (en) | 2020-11-27 | 2020-11-27 | Electric traction locomotive for blast furnace tapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354180.5A CN112373493B (en) | 2020-11-27 | 2020-11-27 | Electric traction locomotive for blast furnace tapping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112373493A CN112373493A (en) | 2021-02-19 |
| CN112373493B true CN112373493B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011354180.5A Active CN112373493B (en) | 2020-11-27 | 2020-11-27 | Electric traction locomotive for blast furnace tapping |
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| Country | Link |
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| CN (1) | CN112373493B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH165016A (en) * | 1932-08-20 | 1933-10-31 | Waggon Fabrik Ag | Device for mounting the car body on the chassis, in particular on the bogies of rail vehicles. |
| US3709151A (en) * | 1971-01-07 | 1973-01-09 | Acf Ind Inc | Railway car center bearing |
| US3827373A (en) * | 1970-08-03 | 1974-08-06 | Creusot Loire | Articulated railway truck |
| EP0241099A1 (en) * | 1986-04-07 | 1987-10-14 | B.V. Alpha Engineering Ingenieurs- en Projectenbureau | Railway train, bogie, storage van and trailer |
| CN101152867A (en) * | 2006-09-30 | 2008-04-02 | 中国南车集团铜陵车辆厂 | Spider for goods train vehicle |
| CN103029718A (en) * | 2011-09-29 | 2013-04-10 | 齐齐哈尔轨道交通装备有限责任公司 | Anti-disengaging device and spherical center plate |
| CN105170964A (en) * | 2015-09-23 | 2015-12-23 | 鞍钢集团铁路运输设备制造公司 | Molten iron tank alignment tractor below blast furnace |
| CN107539323A (en) * | 2017-09-19 | 2018-01-05 | 中冶京诚（湘潭）重工设备有限公司 | A kind of blast furnace casting traction locomotive |
| CN111674417A (en) * | 2020-07-01 | 2020-09-18 | 中车眉山车辆有限公司 | Large-load flat car |
-
2020
- 2020-11-27 CN CN202011354180.5A patent/CN112373493B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH165016A (en) * | 1932-08-20 | 1933-10-31 | Waggon Fabrik Ag | Device for mounting the car body on the chassis, in particular on the bogies of rail vehicles. |
| US3827373A (en) * | 1970-08-03 | 1974-08-06 | Creusot Loire | Articulated railway truck |
| US3709151A (en) * | 1971-01-07 | 1973-01-09 | Acf Ind Inc | Railway car center bearing |
| EP0241099A1 (en) * | 1986-04-07 | 1987-10-14 | B.V. Alpha Engineering Ingenieurs- en Projectenbureau | Railway train, bogie, storage van and trailer |
| CN101152867A (en) * | 2006-09-30 | 2008-04-02 | 中国南车集团铜陵车辆厂 | Spider for goods train vehicle |
| CN103029718A (en) * | 2011-09-29 | 2013-04-10 | 齐齐哈尔轨道交通装备有限责任公司 | Anti-disengaging device and spherical center plate |
| CN105170964A (en) * | 2015-09-23 | 2015-12-23 | 鞍钢集团铁路运输设备制造公司 | Molten iron tank alignment tractor below blast furnace |
| CN107539323A (en) * | 2017-09-19 | 2018-01-05 | 中冶京诚（湘潭）重工设备有限公司 | A kind of blast furnace casting traction locomotive |
| CN111674417A (en) * | 2020-07-01 | 2020-09-18 | 中车眉山车辆有限公司 | Large-load flat car |
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| CN112373493A (en) | 2021-02-19 |
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