CN109435983B - Suspension type truck system - Google Patents
Suspension type truck system Download PDFInfo
- Publication number
- CN109435983B CN109435983B CN201811423004.5A CN201811423004A CN109435983B CN 109435983 B CN109435983 B CN 109435983B CN 201811423004 A CN201811423004 A CN 201811423004A CN 109435983 B CN109435983 B CN 109435983B
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- truck
- traction
- connector
- trucks
- assembly
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- 239000000725 suspension Substances 0.000 title abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D3/00—Wagons or vans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D11/00—Mine cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
- B61F5/08—Bolster supports or mountings incorporating rubber springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Handcart (AREA)
Abstract
The invention discloses a suspension truck system, which comprises a plurality of truck assembly units, wherein each truck assembly unit comprises a pair of suspension trucks and a truck suspended between two trucks, the truck comprises a truck frame, a truck body which is arranged on the peripheral outer side part of the truck frame in a surrounding manner, and a bottom door which can be opened or closed and is arranged on the bottom end part of the truck body, two groups of secondary spring seats for installing the truck are arranged on each truck, two groups of secondary spring seats on each truck are provided for simultaneously suspending the trucks in the adjacent truck assembly units, a first traction assembly is arranged between the truck in each truck assembly unit and any truck, and the trucks are mutually towed by the first traction assembly and the trucks; and a second traction assembly for mutual traction of two trucks is arranged between two adjacent truck assembly units. The truck system reduces the capital cost, shortens the working hours, does not affect the original building on the ground, is detachable and is easy to redirect while realizing the function of truck transportation.
Description
Technical Field
The invention relates to the technical field of mining machinery, in particular to a suspension type truck system.
Background
The geographical environment where the mine is located is generally complex and severe, the conventional truck system has the defects of high infrastructure cost, long engineering time consumption and large occupied area, and how to solve the problems is a matter to be solved by people in time in the field.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a suspension type truck system which adopts a suspension type transportation mode, so that the infrastructure cost is greatly reduced, and the suspension type truck system is convenient to operate, detachable and easy to redirect.
In order to achieve the above purpose, the invention adopts the following technical scheme: the suspended truck system comprises a plurality of truck assembly units, wherein each truck assembly unit comprises a pair of suspended trucks and a truck suspended between two trucks, each truck comprises a truck frame, a truck body and a bottom door, the truck body is arranged on the peripheral outer side part of the truck frame in a surrounding mode, the bottom door is arranged on the bottom end part of the truck body and can be opened and closed, two spring seats for installing the truck are arranged on each truck, two groups of two spring seats are arranged on each truck and are respectively positioned at two ends of each truck, the trucks in the adjacent truck assembly units are suspended at the same time, a first traction assembly is arranged between each truck in each truck assembly unit and any truck, and the trucks are mutually towed by the first traction assembly and the trucks; and a second traction assembly for mutual traction of two trucks is arranged between two adjacent truck assembly units.
Preferably, the first traction assembly comprises a first traction rod, and a connector I and a connector II which are arranged at two axial ends of the first traction rod and made of flexible materials, wherein one end of the first traction rod is hinged with the bogie through the connector I, the other end of the first traction rod is hinged with the carriage body of the truck through the connector II, and the axial lead of the connector I and the axial lead of the connector II are arranged in parallel.
Preferably, the second traction assembly comprises a second traction rod, and a connector III and a connector IV which are arranged at two axial ends of the second traction rod and made of flexible materials, wherein two ends of the second traction rod are hinged to the frames of two adjacent trucks respectively through the connector III and the connector IV, and the connector III and the connector IV are arranged vertically in the axial lead direction.
Preferably, the truck further comprises a transverse ridge and a plurality of longitudinal ridges which are arranged in the truck body, the axial lines of the transverse ridge and the axial lines of the truck body are parallel to each other and are positioned in the same vertical plane, the truck body is divided into a plurality of bin groups which are symmetrically arranged along the transverse ridge by the transverse ridge and the longitudinal ridge, each bin group comprises a pair of bins which are symmetrically arranged on two longitudinal sides of the transverse ridge, bottom doors are in one-to-one correspondence in number with the bins, the upper ends of the bottom doors are hinged with the lower ends of the transverse ridge, and the bottom doors can be turned around the axial line direction of the upper ends of the bottom doors and cover the corresponding discharge openings of the bins.
Further preferably, each of the truck assembly units further includes a bottom door opening and closing mechanism mounted on the truck for opening and closing the bottom door.
Still preferably, the bottom door opening and closing mechanisms and the bin sets are in one-to-one correspondence in number, each bottom door opening and closing mechanism comprises a transverse shaft and a push plate which is sleeved on the transverse shaft and can rotate along with the rotation of the transverse shaft, the transverse shaft can be installed below the carriage body in a reciprocating rotation mode around the direction of the axis of the transverse shaft, the axis of the transverse shaft and the axis of the carriage body are parallel to each other and are located in the same vertical plane, two sides of the push plate are respectively provided with a connecting rod, one end of each connecting rod is connected to the push plate in a rotating mode, and the other end of each connecting rod is installed on the outer side face of the corresponding bottom door in a hinged mode.
Still further preferably, each bottom door opening and closing mechanism further comprises a driving mechanism for driving the transverse shaft to rotate, the driving mechanism comprises a hydraulic cylinder which is arranged on the truck and provided with a piston rod, the bottom door opening and closing mechanism further comprises a guide wheel fixedly sleeved on the transverse shaft, and the output end of the piston rod is rotationally connected with the guide wheel.
Further preferably, the driving mechanism further comprises a ground remote control system which is connected with the hydraulic cylinder circuit and used for driving the hydraulic cylinder to act.
Preferably, a traction beam for suspending the truck on the bogie is arranged on the frame, and the traction beam on the frame is mounted on the corresponding secondary spring seat on the bogie in a matched manner.
Preferably, the traction beam is of a box structure, and the secondary spring seat is further provided with a pin shaft for installing the traction beam.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the suspension type truck system, the truck is suspended on the bogie, so that the truck transportation function is realized, meanwhile, the foundation construction cost is greatly reduced, the engineering time consumption is shortened, the occupied area is small, the original building on the ground is not influenced, the truck system is detachable, and the line changing is easy; the first traction rod assembly is arranged between the truck and the bogie, and the second traction rod assembly is arranged between the truck and the bogie, so that the mutual traction between truck assembly units is realized, and the adopted flexible structure not only absorbs the impact energy, but also can meet the requirement of limited installation space.
Drawings
FIG. 1 is a schematic diagram of a suspended truck system according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the suspended truck system of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic illustration of the first traction assembly;
FIG. 5 is a schematic illustration of the construction of the second traction assembly;
wherein: 1. a truck; 11. a frame; 111. a traction beam; 12. a cabin body; 13. a bottom door; 14. a transverse ridge; 15. longitudinal ridges; 2. a bogie; 21. a second spring seat; 22. a pin shaft; 3. a first traction assembly; 31. a first drawbar; 32. a joint I; 33. a joint II; 4. a second traction assembly; 41. a second drawbar; 42. a joint III; 43. a joint IV; 5. a bottom door opening and closing mechanism; 51. a transverse axis; 52. a push plate; 53. a connecting rod; 54. a guide wheel; 55. a driving mechanism; 551. a hydraulic cylinder; 552. a piston rod.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and specific embodiments.
A suspended truck system includes a plurality of truck assembly units. Each truck assembly unit comprises a pair of suspension trucks 2 and one truck 1 suspended between the two trucks 2, as shown in fig. 1 and 2, the truck 1 comprises a frame 11, a carriage body 12 arranged on the peripheral outer side part of the frame 11 in a surrounding mode, and a bottom door 13 capable of being opened and closed and arranged on the bottom end part of the carriage body 12, as shown in fig. 1, 2 and 3, each truck 2 is provided with two groups of spring seats 21 for installing the truck 1, as shown in fig. 1, 2 and 3, and the two groups of spring seats 21 on each truck 2 are respectively arranged at two ends of the truck 2 for simultaneously suspending the trucks 1 in the adjacent truck assembly units. Here, a first traction assembly 3 is provided between the truck 1 and either truck 2 of the two trucks 2 in each truck assembly unit, as shown in fig. 1, 2, the truck 1 being mutually towed with the truck 2 by the first traction assembly 3; a second traction assembly 4 for mutual traction of two trucks 1 in adjacent truck assembly units is arranged between the two trucks 1, see fig. 1 and 2.
The truck 1 in this example adopts a loading and unloading mode, the upper ends of the side beams forming the frame 11 are provided with inclined planes which incline inwards, the loading is convenient by the arrangement mode, and the materials are not easy to spill during the loading. The carriage body 12 adopts an arc wrapper type hopper car structure, which is beneficial to discharging. In this example, a traction beam 111 for suspending the truck 1 from the bogie 2 is further provided on the frame 11 of each truck 1, and the frame 11 is mounted on the secondary spring seat 21 of the bogie 2 via the traction beam 111. The draft sill 111 adopts a box structure, a pin 22 is arranged on the top of the secondary spring seat 21, as shown in fig. 1, 2 and 3, the draft sill 111 is arranged on the secondary spring seat 21 through the pin 22, and the secondary spring seat 21 is beneficial to transmitting the vertical load and part of the longitudinal load of the truck 1, and particularly, the secondary spring on the secondary spring seat 21 adopts a lamellar rubber pile. The truck system in this example is through hanging truck 1 on bogie 2, when realizing the freight transportation, has reduced the cost of infrastructure, and engineering is consuming time weak point, and area is little, and does not influence the original building in ground, is convenient for demolish and change the line.
In this example, the first traction assembly 3 provided between the truck 1 and the bogie 2 includes a first traction rod 31, and a joint i 32 and a joint ii 33, which are made of flexible materials, are installed on both axial ends of the first traction rod 31, as shown in fig. 4. One end of the first traction rod 31 is hinged with the bogie 2 through a connector I32, the other end of the first traction rod is hinged with the carriage body 12 of the truck 1 through a connector II 33, and the axial lead of the connector I32 is parallel to the axial lead of the connector II 33. The second traction assembly 4 arranged between two trucks 1 in adjacent truck assembly units comprises a second traction rod 41, and a joint III 42 and a joint IV 43 which are arranged at two axial ends of the second traction rod 41 and made of flexible materials, as shown in fig. 5, the two ends of the second traction rod 41 are respectively hinged on the frames 11 of two adjacent trucks 1 through the joint III 42 and the joint IV 43, and the joint III 42 is arranged perpendicular to the axial line direction of the joint IV 43. In the embodiment, the joint I32, the joint II 33, the joint III 42 and the joint IV 43 are all made of flexible rubber materials, the installation space required by the joints made of the materials is small, the impact energy can be absorbed, and particularly, the joints made of the flexible rubber materials among trucks 1 can play a role in buffering vibration impact and can also meet the curve passing performance of vehicles. The axes of the joint III 42 and the joint IV 43 are arranged vertically, so that the requirements of the truck 1 on transverse deflection and longitudinal deflection can be met at the same time. A first traction component 3 is arranged between the trucks 1 and the trucks 2, so that in a specific operation process, when the system is started, the locomotives drive all the trucks 1 to operate through a second traction component 4 between the trucks 1, and then the trucks 1 drive the trucks 2 to move forward through a first traction rod 31 between the trucks 2 and the trucks 1; during braking, the bogie 2 of the suspension locomotive is braked through resistance, the bogie 2 of the suspension truck 1 is braked through disc braking, and braking force on the bogie 2 is transmitted to the truck 1 through the first traction rod 31 between the bogie 2 and the truck 1, so that the truck 1 is braked.
In this example, the truck 1 further includes a transverse ridge 14 and a plurality of longitudinal ridges 15 disposed in the truck body 12, as shown in fig. 1, the axis of the transverse ridge 14 is parallel to the axis of the truck body 12 and is located in the same vertical plane, the truck body 12 is separated by the transverse ridge 14 and the longitudinal ridges 15 into a plurality of bin sets symmetrically disposed along the transverse ridge 14, each bin set includes a pair of bins symmetrically disposed on two longitudinal sides of the transverse ridge 14, and the bottom doors 13 and bins are in one-to-one correspondence in number. Here, the longitudinal ridge 15 has one, and the cabin body 12 is divided into two cabin groups. The upper end of the bottom door is hinged with the lower end of the transverse ridge, specifically, the upper end of the bottom door is hinged on a mounting seat on the lower end of the transverse ridge through a pin shaft, and the bottom door can be turned around the axial line direction of the upper end of the bottom door to be covered on a discharging opening of a corresponding bin.
Each truck assembly unit further comprises a bottom door opening and closing mechanism 5 for opening and closing a bottom door 13, see fig. 2, 3, mounted on the truck 1. The bottom door opening and closing mechanisms 5 are in one-to-one correspondence in number with the bin sets. Each bottom door opening and closing mechanism 5 comprises a transverse shaft 51 and a push plate 52 which is sleeved on the transverse shaft 51 and can rotate along with the rotation of the transverse shaft 51, as shown in fig. 3, the transverse shaft 51 can be installed below the carriage body 12 in a reciprocating rotation mode around the direction of the axis of the transverse shaft 51, the axis of the transverse shaft 51 and the axis of the carriage body 12 are parallel to each other and are located in the same vertical plane, two sides of the push plate 52 are respectively provided with a connecting rod 53, one end of the connecting rod 53 is rotatably connected to the push plate 52, and the other end of the connecting rod 53 is hinged to the outer side face of the corresponding bottom door 13, as shown in fig. 3. Specifically, the push plate 52 herein has an S-shape. Each bottom door opening and closing mechanism 5 further comprises a driving mechanism 55 for driving the transverse shaft 51 to rotate, and as shown in fig. 2 and 3, the driving mechanism 55 comprises a hydraulic cylinder 551 which is installed on the truck 1 and provided with a piston rod 552, the bottom door opening and closing mechanism 5 further comprises a guide wheel 54 fixedly sleeved on the transverse shaft 51, and the output end of the piston rod 552 is rotatably connected with the guide wheel 54. Specifically, the opening and closing operation of the bottom door 13 is that a piston rod 552 on a hydraulic cylinder 551 is driven to extend and retract, a transverse shaft 51 is forced to reciprocate by a guide wheel 54, and then a push plate 52 is driven to rotate by the transverse shaft 51, so that force is transmitted to the bottom door 13 through a connecting rod 53, and then the bottom door 13 is opened and closed. Here, dead points are arranged in the working process of the push plate 52 and the connecting rod 53, and in the closing process of the bottom door 13, the bottom door opening and closing mechanism 5 drives the transverse shaft 51 to rotate through the hydraulic cylinder 551 to pass through the dead points, so that the self-locking function of the bottom door 13 is ensured. By arranging the bottom door opening and closing mechanisms 5 in one-to-one correspondence with the bin sets, it is achieved that the bottom doors 13 in different bin sets can be opened and closed at different times as required, and two bins in the same bin set can be opened and closed at the same time. In this example, the driving mechanism 55 further includes a ground remote control system (not shown) electrically connected to the hydraulic cylinder 551 for driving the hydraulic cylinder 551 to operate, and by providing the ground remote control system, an operator can perform ground remote control on the truck system.
In this example, to increase the service life of the cabin body 12, the cabin body 12 is made of a highly wear resistant material, such as the swedish material HARDOX 450.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (1)
1. The suspended truck system comprises a plurality of truck assembly units, and is characterized in that each truck assembly unit comprises a pair of suspended trucks and a truck suspended between two trucks, each truck comprises a truck frame, a truck body and a bottom door, the truck body is arranged on the peripheral side part of the truck frame in a surrounding mode, the bottom door is arranged on the bottom end part of the truck body in an openable and closable mode, secondary spring seats for installing the truck are arranged on each truck, two groups of secondary spring seats are arranged on each truck, the secondary spring seats are respectively arranged at two ends of each truck and are used for being suspended simultaneously by the trucks in the adjacent truck assembly units, a first traction assembly is arranged between each truck in each truck assembly unit and any truck, and the truck is mutually towed by the first traction assembly and the truck; a second traction component for mutual traction of two trucks is arranged between two adjacent truck component units,
the first traction assembly comprises a first traction rod, and a connector I and a connector II which are arranged at two axial ends of the first traction rod and made of flexible materials, wherein one end of the first traction rod is hinged with the bogie through the connector I, the other end of the first traction rod is hinged with the carriage body of the truck through the connector II, and the axial lead of the connector I is parallel to the axial lead of the connector II;
the second traction assembly comprises a second traction rod, and a connector III and a connector IV which are arranged at two axial ends of the second traction rod and made of flexible materials, wherein the two ends of the second traction rod are respectively hinged on the frames of two adjacent trucks through the connector III and the connector IV, and the connector III is arranged perpendicular to the axial lead direction of the connector IV;
the truck also comprises a transverse ridge and a plurality of longitudinal ridges which are arranged in the truck body, the axial lines of the transverse ridge and the axial lines of the truck body are mutually parallel and positioned in the same vertical plane, the truck body is divided into a plurality of bin groups which are symmetrically arranged along the transverse ridge by the transverse ridge and the longitudinal ridge, each bin group comprises a pair of bins which are symmetrically arranged at the two longitudinal sides of the transverse ridge, the bottom doors and the bins are in one-to-one correspondence in number, the upper end parts of the bottom doors are hinged with the lower end parts of the transverse ridge, the bottom doors can be turned around the axial line direction of the upper end parts of the bottom doors and are covered on the discharging openings of the corresponding bins, each truck assembly unit also comprises a bottom door opening and closing mechanism which is arranged on the truck and is used for opening and closing the bottom doors, the bottom door opening and closing mechanisms and the bin sets are in one-to-one correspondence in number, each bottom door opening and closing mechanism comprises a transverse shaft and a push plate which is sleeved on the transverse shaft and can rotate along with the rotation of the transverse shaft, the transverse shaft can be installed below the carriage body in a reciprocating rotation mode around the direction of the axis of the transverse shaft, the axis of the transverse shaft and the axis of the carriage body are parallel to each other and are positioned in the same vertical plane, two sides of the push plate are respectively provided with a connecting rod, one end of each connecting rod is rotatably connected on the push plate, the other end of each connecting rod is hinged to the outer side face of the corresponding bottom door, each bottom door opening and closing mechanism further comprises a driving mechanism used for driving the transverse shaft to rotate, the driving mechanism comprises a hydraulic cylinder with a piston rod, and installed on a truck, the bottom door opening and closing mechanism further comprises a guide wheel fixedly sleeved on the transverse shaft, the output end of the piston rod is rotatably connected with the guide wheel, and the driving mechanism further comprises a ground remote control system which is connected with the hydraulic cylinder circuit and used for driving the hydraulic cylinder to act; the traction beam is arranged on the frame and used for hanging the truck on the bogie, the traction beam on the frame is mounted on the second-system spring seat corresponding to the traction beam on the bogie in a matched mode, the traction beam is of a box-shaped structure, and a pin shaft used for mounting the traction beam is further arranged on the second-system spring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423004.5A CN109435983B (en) | 2018-11-27 | 2018-11-27 | Suspension type truck system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423004.5A CN109435983B (en) | 2018-11-27 | 2018-11-27 | Suspension type truck system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109435983A CN109435983A (en) | 2019-03-08 |
| CN109435983B true CN109435983B (en) | 2023-09-15 |
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ID=65554282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811423004.5A Active CN109435983B (en) | 2018-11-27 | 2018-11-27 | Suspension type truck system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109435983B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151069A (en) * | 2015-09-29 | 2015-12-16 | 济南轨道交通装备有限责任公司 | Electric driving bogie for subway engineering vehicle |
| CN206327380U (en) * | 2016-12-07 | 2017-07-14 | 中车山东机车车辆有限公司 | Quick roller bearing adapter stabilizer bar with torsion bar mechanism for preventing side rolling of train carriage |
| CN106994981A (en) * | 2017-05-19 | 2017-08-01 | 江苏瑞铁轨道装备股份有限公司 | A kind of central mounting device and railway goods train bogie |
| CN107215345A (en) * | 2017-07-03 | 2017-09-29 | 中车太原机车车辆有限公司 | Dregs hopper wagon |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556097B (en) * | 2011-01-01 | 2014-07-30 | 齐齐哈尔轨道交通装备有限责任公司 | Central suspension device and high-speed truck bogie with same |
| US8596203B2 (en) * | 2011-05-11 | 2013-12-03 | National Steel Car Limited | Railroad car and door mechanism therefor |
-
2018
- 2018-11-27 CN CN201811423004.5A patent/CN109435983B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151069A (en) * | 2015-09-29 | 2015-12-16 | 济南轨道交通装备有限责任公司 | Electric driving bogie for subway engineering vehicle |
| CN206327380U (en) * | 2016-12-07 | 2017-07-14 | 中车山东机车车辆有限公司 | Quick roller bearing adapter stabilizer bar with torsion bar mechanism for preventing side rolling of train carriage |
| CN106994981A (en) * | 2017-05-19 | 2017-08-01 | 江苏瑞铁轨道装备股份有限公司 | A kind of central mounting device and railway goods train bogie |
| CN107215345A (en) * | 2017-07-03 | 2017-09-29 | 中车太原机车车辆有限公司 | Dregs hopper wagon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109435983A (en) | 2019-03-08 |
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