CN110733527A - application in bogie axle box of high-speed passenger train, aluminum alloy material and processing technology thereof - Google Patents
application in bogie axle box of high-speed passenger train, aluminum alloy material and processing technology thereof Download PDFInfo
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- CN110733527A CN110733527A CN201910977542.7A CN201910977542A CN110733527A CN 110733527 A CN110733527 A CN 110733527A CN 201910977542 A CN201910977542 A CN 201910977542A CN 110733527 A CN110733527 A CN 110733527A
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- bogie axle
- axle box
- groove
- speed passenger
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- 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
- B61F15/00—Axle-boxes
- B61F15/20—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses bogie axle boxes applied to high-speed passenger trains, an aluminum alloy material and a processing technology thereof, belonging to the technical field of the aluminum alloy material, and comprising a mold and a bogie axle box body, wherein the bogie axle box body is cast and molded by bodies in the mold, the bogie axle box body is provided with an omega-shaped groove, the end of the groove is provided with a bump, the end of the groove is provided with a second groove, the end of the second groove is provided with a circular through hole, and the top of the groove is provided with a second bump.
Description
Technical Field
The invention relates to aluminum alloy materials of bogie axle boxes and a processing technology, in particular to aluminum alloy materials applied to the bogie axle boxes of a high-speed passenger train and the processing technology thereof, belonging to the technical field of aluminum alloy materials.
Background
The bogie is used as a core component of a high-speed train, has important functions of bearing, guiding, braking, damping and noise reduction, power supply and the like, and needs to ensure high bearing capacity and minimum quality, but currently, cast iron or high-strength steel is still adopted to manufacture parts of the bogie of the high-speed train, such as axle boxes, traction pull rods, C-shaped brackets and the like, such as Q345. steel, so that the density is high, and the parts are difficult to ensure to continuously bear in an environment below 40 ℃ below zero due to the low-temperature brittleness phenomenon, so that the bogie has great running risk and cannot meet the service requirement of a new -generation high-speed train.
Disclosure of Invention
The invention mainly aims to solve the defects of the prior art and provide types of bogie axle boxes and aluminum alloy materials applied to high-speed passenger trains and a processing technology thereof.
The purpose of the invention can be achieved by adopting the following technical scheme:
is applied to a bogie axle box of a high-speed passenger train, and comprises a die and a bogie axle box body, wherein the bogie axle box body is formed by casting bodies in the die, an omega-shaped 0-th groove is formed in the bogie axle box body, a -th bump is arranged at the 2 end of the 1-th groove, a second groove is arranged at the end of the -th groove, a circular through hole is formed at the end of the second groove, a second bump is arranged at the top of the -th groove, a hydraulic suspension stainless steel ring is arranged in the second groove, the hydraulic suspension stainless steel ring is arranged at the periphery of the -th groove, the hydraulic suspension stainless steel ring and the bogie axle box body are radially parallel, the hydraulic suspension stainless steel ring and the surface of the bogie axle box body, which is in contact with each other, the hydraulic suspension stainless steel ring is positioned in the housing, and oil films of the hydraulic suspension stainless steel ring and the housing as well as the inner ring and the second groove are equally distributed with the and the second groove.
Preferably, the th bump is a square bump, and the th groove has a width twice the width of the th bump.
Preferably, the cross-sectional view of the mold is an automobile-like mold with ends being curved and ends being square.
Preferably, the second bump is a rectangular bump, and the width of the second bump is equal to the width of the top of the -th groove.
aluminum alloy materials applied to high-speed passenger train bogie axle boxes comprise, by weight, 0.1-0.5 part of titanium pentoxide, 1.5-3.0 parts of tourmaline, 0.05-0.12 part of Si, 0.08-0.15 part of Fe, 2.0-2.6 parts of Cu, 0.01-0.1 part of Mn, 1.9-2.6 parts of Mg, 0.01-0.04 part of Gr, 5.7-6.7 parts of Zn, 0.04-0.06 part of Ti, 0.1-0.14 part of Zr, 5-10 parts of medical stone, 10-20 parts of Marfan abrin and the balance of aluminum.
A processing technique of aluminum alloy material applied to bogie axle boxes of high-speed passenger trains comprises the following steps:
step 2: injecting the melted raw materials into a mould, and carrying out artificial aging on the rough blank after the solution heat treatment;
and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;
and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;
and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;
step 6: and finally, processing the surface of the steering frame axle box.
Preferably, the mass ratio of the marxianus to the medical stone is 2: 1.
preferably, in the step 1, the preheating temperature in the smelting furnace is in the range of 800-2200 ℃.
Preferably, at least two thermocouples are added to the melting furnace in step 1.
Preferably, in the step 2, the temperature range of the artificial aging is 75-250 ℃.
The invention has the beneficial technical effects that: according to the bogie axle box applied to the high-speed passenger train, the aluminum alloy material and the processing technology thereof, the aluminum alloy material has low density and better low-temperature comprehensive mechanical property and service safety, the bogie axle box of the high-speed passenger train manufactured by the aluminum alloy material is obviously beneficial to reducing the dead weight of a bogie and the weight of the whole train, and the vibration and noise reduction, the increase of the operation energy, the operation safety and the increase of the service life of parts of a plurality of high-speed trains, subways, freight trains and the like are facilitated by combining the re-optimization design of the train structure, the space and the like.
Drawings
FIG. 1 is a schematic view of the overall construction of a preferred embodiment of bogie axle boxes for use in a high speed passenger train bogie axle box, aluminum alloy material and process for making the same in accordance with the present invention;
fig. 2 is a schematic structural diagram of preferred embodiment of the mold applied to the bogie axle box of the high-speed passenger train, the aluminum alloy material and the processing technology thereof according to the invention.
In the figure, 1- th bump, 2- th groove, 3-second groove, 4-round through hole, 5-second bump, 6-mould and 7-bogie axle box body.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in with reference to the following examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example :
as shown in fig. 1-2, the axle box applied to the bogie of the high-speed passenger train provided by this embodiment includes a mold 6 and a bogie axle box body 7, the bogie axle box body 7 is cast and molded by bodies inside the mold 6, the bogie axle box body 7 is provided with an omega-shaped -th groove 2, the 1 end of the -th groove 2 is provided with a -th bump 1, the other 894 end of the -th groove 2 is provided with a second groove 3, the other end of the second groove 3 is provided with a circular through hole 4, the top of the -th groove 2 is provided with a second bump 5, the -th bump 1 is a square bump, the width of the -th bump 1 is half the width of the -th groove 2, the cross-sectional view of the mold 6 is that the end is arc-shaped, the other end is a square similar automobile-shaped mold, the second bump 5 is a rectangular bump, the width of the second bump 5 is equal to the width of the top of the groove -shaped groove 2, a hydraulic suspension steel ring is provided inside the second groove 3, the hydraulic suspension ring is provided with an annular shape, the radial direction of the stainless suspension ring, and the stainless ring is suitable for being capable of being damaged by the radial direction of the stainless steel suspension of the stainless suspension of the bogie axle box body, and the stainless steel suspension of the stainless steel suspension ring under the stainless box, the stainless box body, the stainless box is suitable for being capable of the stainless box, and the radial direction of the stainless box body.
aluminum alloy materials applied to a bogie axle box of a high-speed passenger train comprise, by weight, 0.1-0.5 part of titanium pentoxide, 1.5-3.0 parts of tourmaline, 0.05-0.12 part of Si, 0.08-0.15 part of Fe, 2.0-2.6 parts of Cu, 0.01-0.1 part of Mn, 1.9-2.6 parts of Mg, 0.01-0.04 part of Gr, 5.7-6.7 parts of Zn, 0.04-0.06 part of Ti, 0.1-0.14 part of Zr, 5-10 parts of medical stone, 10-20 parts of Marfan train, and the balance of aluminum, wherein the aluminum alloy materials have low density and better low-temperature comprehensive mechanical properties and service safety, and the application of the aluminum alloy materials to manufacture the bogie of the high-speed passenger train is beneficial to remarkably reducing the self weight and the weight of the bogie, and the weight of the train, and the optimization design of the structure, the space and the like, and the great benefit to increase the service life of the subway, the freight train, the freight axle box and the like.
A processing technique of aluminum alloy material applied to bogie axle boxes of high-speed passenger trains comprises the following steps:
step 2: injecting the melted raw materials into a mould 6, and carrying out artificial aging on the rough blank after the solution heat treatment;
and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;
and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;
and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;
step 6: and finally, processing the surface of the steering frame axle box.
In the embodiment, the mass ratio of Marina abrotanum to medical stone is 2: 1, in the step 2, the temperature range of artificial aging is 75-250 ℃, in the step 1, the temperature range of preheating in a smelting furnace is 800-2200 ℃, in the step 1, at least two thermocouples are added in the smelting furnace, so that the added tourmaline with the highest temperature and the lowest temperature in the furnace can be measured, the added tourmaline not only has piezoelectricity but also has pyroelectric property, the medical stone has adsorbability, dissolubility, adjustability, bioactivity and mineralization, can assist other substances to be better fused at , and the added Marina abrotanum has good impact resistance and can enhance the impact resistance of the aluminum alloy.
Example two:
step 1: weighing titanium pentoxide: 0.1 part, tourmaline: 1.5 parts, Si: 0.05 part, Fe: 0.08 parts, Cu: 2.0 part, Mn: 0.01 part, Mg: 1.9 parts, Gr: 0.01 part, Zn: 5.7 parts, Ti: 0.04 part, Zr: 0.1, medical stone: 5 parts, namely horse accounts for acacia: 10 parts of aluminum, and the balance of aluminum, and the raw materials are poured into a smelting furnace to be preheated to 800 ℃ for melting;
step 2: injecting the melted raw materials into a mould 6, and carrying out artificial aging on the rough blank after the solution heat treatment at 75 ℃ for cooling;
and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;
and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;
and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;
step 6: and finally, processing the surface of the steering frame axle box.
Example three:
step 1: weighing titanium pentoxide: 0.3 part, tourmaline: 2 parts, Si: 0.08 parts, Fe: 0.1 part, Cu: 2.3 parts, Mn: 0.06 part, Mg: 2.1 parts, Gr: 0.03 part, Zn: 5.8 parts, Ti: 0.05 part, Zr: 0.124, medical stone: 8 parts, namely horse accounts for acacia: 16 parts of aluminum, and pouring the raw materials into a smelting furnace to be preheated to 1200 ℃ for melting;
step 2: injecting the melted raw materials into a mould 6, and carrying out artificial aging on the rough blank after the solution heat treatment at 150 ℃ for cooling;
and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;
and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;
and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;
step 6: and finally, processing the surface of the steering frame axle box.
Example four:
step 1: weighing titanium pentoxide: 0.5 part, tourmaline: 3.0 part, Si: 0.12 part, Fe: 0.15 part, Cu: 2.6 parts, Mn: 0.1 part, Mg: 2.6 parts, Gr: 0.04 part, Zn: 6.7 parts, Ti: 0.06 part, Zr: 0.14, medical stone: 10 parts, namely horse accounts for acacia: 20 parts of aluminum, and pouring the raw materials into a smelting furnace to be preheated to 1800 ℃ for melting;
step 2: injecting the melted raw materials into a mould 6, and cooling the crude blank subjected to the solution heat treatment at 250 ℃ by carrying out artificial aging;
and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;
and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;
and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;
step 6: and finally, processing the surface of the steering frame axle box.
In summary, in this embodiment, according to the bogie axle box applied to the high-speed passenger train, the aluminum alloy material and the processing process thereof in this embodiment, the performance of the bogie axle box prepared in any one of embodiments to 8932 is tested, and the performance strength of the bogie axle box obtained in any one of embodiments < embodiment two < embodiment three > embodiment four is obtained, the aluminum alloy material has low density and better low-temperature comprehensive mechanical properties and service safety, the application of the aluminum alloy material to manufacture the bogie axle box of the high-speed passenger train is remarkably beneficial to reducing the self weight and the total vehicle weight of the bogie, and by combining with the re-optimization design of train structure, space and the like, the tourmaline has piezoelectric property and pyroelectric property, thereby being greatly beneficial to vibration and noise reduction, increase in transportation energy, operation safety and increase in service life of parts of multiple trains, such as high-speed trains, subways and the like, the medical stone has adsorbability, solubility, adjustability, bioactivity and impact resistance, can assist other substances to better fuse in , and the added pyroelectric property has good fusion occupation capability of aluminum alloy, and can enhance the impact resistance.
The above description is only an example of the present invention at step , but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its concept within the scope of the present invention.
Claims (10)
- The bogie axle box applied to the high-speed passenger train is characterized by comprising a mold (6) and a bogie axle box body (7), wherein the bogie axle box body (7) is formed by casting bodies inside the mold (6), an omega-shaped -th groove (2) is formed in the bogie axle box body (7), a -th bump (1) is arranged at the -end of the -th groove (2), a second groove (3) is formed at the -end of the -th groove (2), a circular through hole (4) is formed at the -end of the second groove (3), a second bump (5) is arranged at the top of the -th groove (2), a hydraulic suspension stainless steel ring is arranged in the second groove (3), the hydraulic suspension stainless steel ring is arranged at the periphery of the -th groove (2), the hydraulic suspension stainless steel ring and the bogie axle box body (7) are radially parallel to each other, the hydraulic suspension stainless steel ring is in contact with the bogie axle box body (7), and the hydraulic suspension stainless steel ring is arranged between the outer ring and the hydraulic suspension housing () and the hydraulic suspension housing is in which the hydraulic suspension stainless steel ring is in contact with the hydraulic suspension housing.
- 2. application to bogie axle boxes of high speed passenger trains according to claim 1, wherein the st cam (1) is a square cam and the st groove (2) has a width twice the width of the st cam (1).
- 3. application in bogie axle boxes of high speed passenger trains according to claim 1, wherein the cross-section of the mould (6) is a car-like mould with ends being arc-shaped and another ends being square.
- 4. application to bogie axle boxes of high speed passenger trains according to claim 1, wherein the second cam (5) is a rectangular cam, the width of the second cam (5) being equal to the width of the top of the groove (2).
- 5. aluminum alloy materials applied to high-speed passenger train bogie axle boxes, which are characterized by comprising, by weight, 0.1-0.5 part of titanium pentoxide, 1.5-3.0 parts of tourmaline, 0.05-0.12 part of Si, 0.08-0.15 part of Fe, 2.0-2.6 parts of Cu, 0.01-0.1 part of Mn, 1.9-2.6 parts of Mg, 0.01-0.04 part of Gr, 5.7-6.7 parts of Zn, 0.04-0.06 part of Ti, 0.1-0.14 part of Zr, 5-10 parts of medical stone, 10-20 parts of Marfan abrin, and the balance of aluminum.
- 6, A processing technique of aluminum alloy material applied to high-speed passenger train bogie axle box, which is characterized by comprising the following steps:step 1, weighing quantitative trititanium pentoxide, tourmaline, Si, Fe, Cu, Mn, Mg, Gr, Zn, Ti, Zr, medical stone, Marfan acacia and aluminum, and pouring the raw materials into a smelting furnace for preheating and melting;step 2: injecting the melted raw materials into a mould (6), and carrying out artificial aging on the rough blank after the solution heat treatment;and step 3: after artificial aging, carrying out ultrasonic flaw detection on the blank, and detecting whether the interior of the rough blank is damaged or not;and 4, step 4: cooling the rough blank, taking out the rough blank, and performing shot blasting and sand blasting on the surface of the rough blank;and 5: machining the rough blank subjected to sand blasting into a bogie axle box, performing penetrant inspection on the machined bogie axle box, and secondarily detecting the internal condition of the bogie axle box;step 6: and finally, processing the surface of the steering frame axle box.
- 7. The processing technology of kinds of aluminum alloy materials applied to high-speed passenger train bogie axle boxes according to claim 6, wherein the mass ratio of Marfan acacia to medical stone is 2: 1.
- 8. The processing technology of aluminum alloy materials for bogie axle boxes of high-speed passenger trains as claimed in claim 6, wherein the preheating temperature in the smelting furnace in step 1 is in the range of 800-2200 ℃.
- 9. The process of applying to the axlebox of the bogie of the high-speed passenger train, according to claim 6, wherein at least two thermocouples are added in the smelting furnace in the step 1.
- 10. The processing technology of aluminum alloy materials for bogie axle boxes of high-speed passenger trains as claimed in claim 6, wherein the temperature range of artificial aging in step 2 is 75-250 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977542.7A CN110733527B (en) | 2019-10-15 | 2019-10-15 | Bogie axle box applied to high-speed passenger train, aluminum alloy material and processing technology of aluminum alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977542.7A CN110733527B (en) | 2019-10-15 | 2019-10-15 | Bogie axle box applied to high-speed passenger train, aluminum alloy material and processing technology of aluminum alloy material |
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| Publication Number | Publication Date |
|---|---|
| CN110733527A true CN110733527A (en) | 2020-01-31 |
| CN110733527B CN110733527B (en) | 2021-07-13 |
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Citations (8)
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|---|---|---|---|---|
| CN201193037Y (en) * | 2008-08-15 | 2009-02-11 | 铁道部运输局 | Rotating arm type axle box positioning device of high-speed motor train unit bogie |
| CN202193087U (en) * | 2011-11-16 | 2012-04-18 | 常州华德机械有限公司 | Rotary shaft of split axle box of high-speed train |
| KR20140091160A (en) * | 2013-01-09 | 2014-07-21 | 한국철도공사 | Train axle rod decomposition workbench |
| CN104648434A (en) * | 2013-11-22 | 2015-05-27 | Skf公司 | Axlebox comprising split housing parts, vehicle comprising at least one such axlebox and processes |
| CN104859677A (en) * | 2015-05-15 | 2015-08-26 | 长春轨道客车股份有限公司 | Axle box device of bogie of CRH train |
| CN205417643U (en) * | 2016-03-11 | 2016-08-03 | 宁波诚铭模具有限公司 | Axle box |
| CN205836834U (en) * | 2016-06-14 | 2016-12-28 | 中车株洲电力机车有限公司 | A kind of split type axle box |
| CN209112181U (en) * | 2018-10-22 | 2019-07-16 | 中车青岛四方机车车辆股份有限公司 | A kind of bogie axle cabinet structure, bogie and rail vehicle |
-
2019
- 2019-10-15 CN CN201910977542.7A patent/CN110733527B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193037Y (en) * | 2008-08-15 | 2009-02-11 | 铁道部运输局 | Rotating arm type axle box positioning device of high-speed motor train unit bogie |
| CN202193087U (en) * | 2011-11-16 | 2012-04-18 | 常州华德机械有限公司 | Rotary shaft of split axle box of high-speed train |
| KR20140091160A (en) * | 2013-01-09 | 2014-07-21 | 한국철도공사 | Train axle rod decomposition workbench |
| CN104648434A (en) * | 2013-11-22 | 2015-05-27 | Skf公司 | Axlebox comprising split housing parts, vehicle comprising at least one such axlebox and processes |
| CN104859677A (en) * | 2015-05-15 | 2015-08-26 | 长春轨道客车股份有限公司 | Axle box device of bogie of CRH train |
| CN205417643U (en) * | 2016-03-11 | 2016-08-03 | 宁波诚铭模具有限公司 | Axle box |
| CN205836834U (en) * | 2016-06-14 | 2016-12-28 | 中车株洲电力机车有限公司 | A kind of split type axle box |
| CN209112181U (en) * | 2018-10-22 | 2019-07-16 | 中车青岛四方机车车辆股份有限公司 | A kind of bogie axle cabinet structure, bogie and rail vehicle |
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| Publication number | Publication date |
|---|---|
| CN110733527B (en) | 2021-07-13 |
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