WO2021112722A1 - Поглощающий аппарат - Google Patents
Поглощающий аппарат Download PDFInfo
- Publication number
- WO2021112722A1 WO2021112722A1 PCT/RU2020/050232 RU2020050232W WO2021112722A1 WO 2021112722 A1 WO2021112722 A1 WO 2021112722A1 RU 2020050232 W RU2020050232 W RU 2020050232W WO 2021112722 A1 WO2021112722 A1 WO 2021112722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- friction
- shaped
- main axis
- housing
- plate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/04—Draw-gear combined with buffing appliances
- B61G9/06—Draw-gear combined with buffing appliances with rubber springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/12—Continuous draw-gear combined with buffing appliances, e.g. incorporated in a centre sill
- B61G9/14—Continuous draw-gear combined with buffing appliances, e.g. incorporated in a centre sill with rubber springs
Definitions
- the invention relates to railway transport, namely to draft gears of coupling and automatic couplers of railway rolling stock and is intended to absorb energy and damp longitudinal forces acting on the rolling stock.
- a draft gear is known (RF Patent N ° 169528, B61G9 / 00, publ. 09/30/2016), containing a body in the form of a glass, in which is placed symmetrically with its inner walls a pressure cone in contact with the friction wedges resting on the base plate. With their side surfaces, the wedges are in contact with fixed plates and bronze friction inserts fixed in the windows of the body. Movable friction plates are installed between the outer surfaces of the fixed plates and the inner walls of the housing. A back-and-forth device in the form of polymer elastic elements is placed under the base plate.
- a package of polymeric elastic elements together with a base plate, a pressure cone and wedges are tightened with a nut and a bolt inserted through a hole in the bottom of the body.
- the angle between the pressure cone and the friction wedge is greater than 42 ° but less than 47 °.
- Sintered metal elements on fixed plates were replaced with bronze friction inserts.
- the friction wedges are equipped with angle difference compensators.
- the closest analogue from the prior art is a draft gear (RF Patent N ° 2593732C2, B61G 9/06, publ. 09/15/2011), containing a hollow body with a closed end part and an opposite open end part through which the main axis passes located an elastic system in the lower part of the body, and a friction system located in the open part of the body and which includes: a friction wedge located on the main axis of the body, one end of which extends from the body, and the second end is located at the top of the open part of the body, and the friction wedge has the first and a second inclined surface; first and second friction shoes located on either side of the friction wedge, each of said friction shoes having first, second and third inclined surfaces, wherein the first inclined surface of the friction wedge interacts with the first inclined surface of the first friction shoe, and the second inclined surface the friction wedge interacts with the first inclined surface of the second friction shoe, and the first and second inclined surfaces of the friction wedge and the first inclined surface of each friction shoe are located relative to the main axi
- each H-shaped barrier plate has an inclined surface, while the inclined surface of the first H -shaped barrier plate interacts with the second inclined surface of the first friction shoe, and the inclined surface of the second H-shaped barrier plate interacts with the second inclined surface of the second friction shoe, and the inclined surface of each H-shaped barrier plate and the second inclined surface of each friction shoe are located relative to the main the axis of the body at the second given angle; the first and second friction plates, and the first friction plate is located on the side of the first
- the elastic system is formed by an elastic element located in the closed part of the body along the main axis of the body, the central plate is made with a protrusion in its lower part for centering on the main axis housing, the pressing element is made with a flat inner horizontal surface with the possibility of interacting with an elastic element located in the closed part of the housing, and in the center of the pressing
- Each barrier plate and each friction shoe are fitted with lubricating pads.
- a spring is installed between the friction wedge and the pressure element to create a force that maintains the friction wedge in its initial position.
- the pressure element interacts with both friction plates and has projections interacting with the lower ends of the friction plates, with the help of which the force from the elastic element formed by the block of elastomeric elements is transmitted through the pressure element to both friction plates and returns them to their initial position after each impact or force impact on the draft gear.
- the disadvantage of the known draft device is the lack of a rod centering the elastomeric elements during operation and a complex system for centering the elastomeric elements along the main axis.
- a spring is used in the design of the device, which complicates the device and the design of the pressure element, which in this version makes the device heavier, and there are no lubricating inserts between the C-shaped wear liners and friction plates, which negatively affects the reliability of the device.
- the technical result of the invention is to increase the reliability and service life due to more accurate centering of the interacting structural elements of the friction and elastic systems when exposed to a dynamic load and increasing the energy consumption of the apparatus while simplifying the design and ensuring the technical requirements for absorbing devices for coupling (automatic couplers) devices of railway rolling stock.
- the first U-shaped friction plate is located on the side of the first barrier plate, and the second 11-shaped friction plate - on the side of the second barrier plate; first and second wear liners, the first wear liner being located on the side of the first U-shaped friction plate, the second wear liner on the side of the second U-shaped friction plate and fixed in the recesses of the side walls of the housing; a pressure element made with the first and second inclined surfaces, each of which interacts with the third inclined surface of the corresponding friction shoe, and the first and second inclined surfaces of the pressure element and the third inclined surface of each friction shoe are located relative to the main axis of the body at a third predetermined angle, the elastic system formed by a dynamic load absorber located in the closed part of the housing along the main axis of the housing on the guide rod, the pressure element is made with a flat inner horizontal surface with the possibility of interacting with the dynamic load absorber located in the closed part of the housing, and in the center of the pressure element there is a hole aligned with by
- the U-shaped protrusion is made with a flat or concave bottom surface with the possibility of interacting with the corresponding surfaces of the thrust arms of the friction wedge
- each C-shaped protrusion is made with a lower horizontal flat or concave surface, an upper horizontal flat or concave surface, a lateral vertical surface
- each the side protrusion of each barrier plate is located inside the corresponding C-shaped protrusion on opposite sides of the lower part of the body so that the lower horizontal flat or concave surface of each C-shaped protrusion of the body in the lower part interacts with the lower horizontal flat or convex surface of the corresponding side protrusion of the barrier plate
- the upper horizontal flat or concave surface of each C-shaped protrusion of the housing in the lower part is located with a technological gap from the upper horizontal flat or convex surface of the corresponding lateral protrusion UPA of the barrier plate
- the lateral vertical surface of each C-shaped protrusion of the housing in the lower part is located with a technological gap from the lateral vertical surface
- the first predetermined angle is about 45 ⁇ 5 °
- the second predetermined angle is about 4 ⁇ 3 °
- the third predetermined angle is about 75 ⁇ 5 °.
- the projections of the plate of the elastic member are cylindrical in shape.
- the projections of the plate of the elastic element are made in the form of pointed tenons-teeth.
- Figure 1 shows a draft gear with an elastic element on a guide rod, in section
- Figure 2 depicts a draft gear with an elastic element on the guide rod, in section with designation of predetermined angles
- FIG. 3 shows a section A-A in Fig. 1;
- FIG. 4 shows a section b-b in Fig. 3;
- Figure 5 shows a cross-section of the draft gear housing
- Figure 6 shows a barrier plate
- Figure 7 shows a U-shaped friction plate
- Figure 8 shows a pressure member
- Figure 9 shows a plate of an elastic element with cylindrical protrusions
- Figure 10 shows a plate of an elastic element with projections in the form of pointed spikes-teeth. Description of embodiments
- the draft gear comprises a body 1 with a closed end part 2 and an opposite open end part 3 through which the main axis 4 passes, a friction system located in the open part 3 of the body, a guide rod 14, an elastic system including a damper dynamic load 16, formed by a block of elastic elements 45 formed by two plates 18 and an elastomeric element 17 installed between them.
- the body of the draft gear, the guide rod 14 and the friction system are preferably made of strong metals, the elastomeric element is made of synthetic materials (for example, polymeric materials) ...
- the friction system includes a friction wedge 5 located on the main axis 4 of the housing 1, one end of which extends from the open end part 3 of the housing 1, and the second end is located at the top of the open part of the housing 3, the first 6 and second 7 friction shoes located along both sides of the friction wedge 5.
- the first friction shoe 6 has a first 6a, a second 66 and a third 6b inclined surfaces.
- the second friction shoe 7 has a first 7a, a second 76 and a third 7b inclined surfaces.
- the first inclined surface 5a of the friction wedge 5 interacts with the first inclined surface 6a of the first friction wedge 6, and the second inclined surface 56 of the friction wedge 5 interacts with the first inclined surface 7a of the second friction shoe 7.
- the first inclined surface 5a and the second inclined surface 56 of the friction wedge 5 and the first inclined surface 6a, 7a of each friction shoe 6, 7 are located relative to the main axis of the housing at a first predetermined angle a, which is about 45 ⁇ 5 °, preferably 45 °.
- the friction system includes first 8 and second 9 barrier plates, and the first barrier plate 8 is located on the side of the first friction shoe 6, and the second barrier plate 9 - on the side of the second friction shoe 7.
- the first barrier plate 8 has an inclined surface 8a.
- the second barrier plate 9 also has an inclined surface 9a.
- the inclined surface 8a of the first barrier plate 8 interacts with the second inclined surface 66 of the first friction shoe 6, and the inclined surface 9a of the second barrier plate 9 interacts with the second inclined surface 76 of the second friction shoe 7.
- the inclined surface 8a, 9a of each barrier plate 8, 9 and the second inclined surface 66, 76 of each friction shoe 6, 7 are located relative to the main axis the housing at a second predetermined angle b, which is about 4 ° ⁇ 3 °, preferably 4 °.
- the friction system includes first 10 and second 11 U-shaped friction plates, and the first U-shaped friction plate 10 is located on the side of the first barrier plate 8, and the second 11-shaped friction plate 11 - on the side of the second barrier plate ...
- the first 12 and second 13 wear liners insulating the housing 1 from the frictional action of the moving elements, the first wear liner 12 being located on the side of the first U-shaped friction plate 10, and the second wear liner 13 from the side of the second U-shaped friction plate 11 and fixed in the recesses of the side walls of the casing 1.
- the use of wear liners 12, 13 allows the casing 1 of the draft gear to be manufactured from a polymer material, since the liners 12, 13 isolate the walls of the casing 1 from the moving parts of the casing. This ensures that there are no friction surfaces of the housing 1 with moving parts, which leads to no wear of the housing walls, an increase in the resource and an increase in the reliability of the draft gear.
- friction shoes 6, 7 from the side of the barrier plates 8, 9 and U-shaped friction plates 10, 11 from the side of the barrier plates 8, 9 and from the side of wear liners 12, 13 are equipped with lubricating inserts 26, which as a result of friction, they provide solid (dry) lubrication of the walls of friction shoes 6, 7 and U-shaped friction plates 10, 11 and prevent rapid wear of parts.
- Each lubricant liner 19 can be made with one, two or three layers. It is advisable to use three-layer lubricating liners 19.
- the first layer in contact with the surface of the friction shoes 6, 7 and U-shaped friction plates 10, 11, includes large abrasive particles and accelerates the process of running-in surfaces.
- the second (middle) layer contains a lubricant with a finer dispersed abrasive grain, than in the first layer, which increases the surface finish of the friction pairs of barrier plates 8, 9 with friction shoes 6, 7, barrier plates 8, 9 with 11-shaped friction plates 10, 11 and U-shaped friction plates
- the third layer in contact with the surface of the separating plates 8, 9 and wear liners 12, 13 ensures the achievement of the required coefficient of friction and reduced wear of parts after the first two layers fulfill their function.
- metals are used that are softer than the metal of the friction elements (for example, copper, bronze, graphite), or other materials with the addition of harder metals in the first two layers than the metal of the friction elements (for example, diamond chips).
- the abrasiveness of the second layer is less than the first, and the third layer is not abrasive and consists only of a soft material (softer than the metal of the friction elements).
- Lubricating liners 19 are made by pressing abrasive and lubricating powders into sheets and then stamping the liners. The liners are pressed into the friction elements during assembly.
- the friction system also includes a pressure member 15, made with a first inclined surface 15 a, which interacts with the third inclined surface 6b of the first friction shoe 6, and a second inclined surface 156, which interacts with the third inclined surface 7b of the second friction shoe 7.
- each inclined surface 15a, 156 of the pressure element 15 and the third inclined surface 6b, 7b of each friction shoe 6, 7 are located relative to the main axis of the housing at a third predetermined angle g, which is 75 ⁇ 5 °, preferably 75 °.
- the thrust member has protrusions interacting with the protrusions of each U-shaped friction plate, designed to return the U-shaped friction plates to their initial position after each impact or force acting on the absorber.
- the inner horizontal surface 20 of the pressure element 15 is made integral and generally flat with the possibility of interaction with the dynamic load absorber 16, consisting of blocks of elastic elements 45 formed by two plates 18 and installed between them elastomeric element 17, and each plate 18 is made in the center with a hole 49, in which a guide element 14 is located, installed in the closed part
- the pressing element 15 is made with a hole 21 located coaxially on the main axis of the housing and intended for centering relative to the main axis of the housing, the dynamic load absorber 16, consisting of blocks of elastic elements 45 formed by two plates 18 and installed between them an elastomeric element 17, and the guide rod 14 by installing a portion of the guide rod 14 in the hole 21.
- the body 1 is made with U-shaped protrusions 26 on the inner surfaces of the open end part 3 of the body 1, and each U-shaped protrusion 26 is made with a flat or concave bottom surface 27, the friction wedge 5 is made with thrust arms 28, which are made with an upper flat or convex surface 29 and a lower projection 30, the pressing element 15 is made with recesses 31.
- the lower projections 30 of the thrust arms 28 of the friction wedge 5 are located in the recesses 31 of the pressing element 15 with a technological gap, thus providing additional mutual positioning friction wedge 5 with respect to the pressure element 15 and prevents unplanned disassembly of the draft gear.
- the dynamic load absorber 16 is a block of elastic elements 45 formed by two plates 18 and installed between them an elastomeric element 17 made of thermoplastic polyester elastomeric material, each plate 18 of the elastic element 45 being concentrically mounted on the guide rod 14
- Each elastomeric element 17 is formed with a central hole and has a generally cylindrical shape. Elastomeric elements 17 are located in the closed part of the housing 2 in such a way that their holes are located on the main axis of the housing.
- Each plate 18 of each elastic element 45 is made with protrusions 46 in such a way that the protrusions 46 of the plate 18 interact with the upper surface 47 and the lower surface 48 of the elastomeric element and provide mutual positioning of the respective plates 18 and the elastomeric element 17, each plate 18 of elastic element 45 is made with a central hole 49 located on the main axis of the body to form one central channel hole 22 passing through all plates 18, located along the main axis and allowing the elastomeric elements 17 and plates 18 to be centered relative to the main axis and guide rod 14 by locating part of it in hole 22.
- a cone-shaped or cylindrical recess 23 located on the main axis of the body and intended for centering relative to the main axis of the body of the guide rod 14 by means of the head 24 of the guide rod 14 installed in the recess 30, pressed and fixed by the lower plate eighteen.
- the barrier plate 8 and 9 is made on opposite sides with side protrusions 32 and 33 in the lower part, and each side protrusion 32 and 33 of the barrier plate 8 and 9 is made with a lower horizontal flat or convex surface 34, upper horizontal a flat or convex surface 35, a lateral vertical surface 36, the body is made with C-shaped oppositely directed protrusions 37 located on opposite sides of the lower part, and each C-shaped protrusion 37 is made with a lower horizontal flat or concave surface 38, an upper horizontal flat or concave surface 39, a lateral vertical surface 40, and each lateral protrusion 32 and 33 of each barrier plate 8 and 9 is located inside the corresponding C-shaped protrusion 37 on opposite sides of the lower part of the housing 1 so that the lower horizontal flat or concave surface 38 of each C- shaped protrusion 3 7 of the housing 1 in the lower part interacts with the lower horizontal flat or convex surface 34 of the corresponding lateral protrusion 32 and 33 of the barrier plate 8
- the pressing element 15 is made with four protrusions 41, each protrusion 41 is made with an upper surface 42, the first U-shaped plate 10 and the second 11 are made with protrusions 43 on the sides, and each protrusion 43 is made with a lower surface 44.
- the lower surface 44 of the projection 43 of the first 10 and second 11 U-shaped plates interact with the surface of the upper 42 of the corresponding projection 41 of the pressing element 15.
- a technological gap is formed.
- the technological gap between the surface of the upper 42 of the projection 41 of the pressing element 15 and the surface of the lower 44 of the projection 43, the U-shaped plate of the first 10 and second 11 is closed and the lower surface 44 of the projection 43 of the first 10 and the second 11 U-shaped plates is in contact with the surface of the upper 42 of the corresponding protrusion 41 of the pressing element 15 and interacts until the device returns to its original operating position.
- a dynamic load damper 16 consisting of blocks of elastic elements 41 formed by two plates 18 and an elastomer element 17 installed between them, is installed on a guide rod 14 having a head 24. Then a dynamic load damper 16, consisting of blocks of elastic elements 41, formed by two plates 18 and the elastomeric element 17 installed between them, together with the guide rod 14, is installed into the closed part of the housing 2 by the head 24 of the guide rod 14 into the recess 23. On top of the dynamic load absorber 16, consisting of blocks of elastic elements 41 formed by two plates 18 and installed between them an elastomeric element 17, the pressing element 15 is installed.
- the dynamic load damper 16 consisting of blocks of elastic elements 41 formed by two plates 18 and an elastomeric element 17 installed between them, is compressed to a position that is fixed by a device, inserted into the front holes in the housing
- the friction wedge 5 is lowered into the housing 1 in a position rotated around the axis 4 relative to the operating position in such a way that a part of the guide element 14 is in the hole of the friction wedge 5 and the thrust shoulders 28 of the friction wedge 5 are below the upper end of the 11-shaped protrusions 26 by the inner surfaces of the open end part 3 of the housing 1, then the friction wedge 5 is turned and set to its original position so that the thrust shoulders 28 of the friction wedge 5 are in contact with the upper flat or convex surface 29 with the flat or concave lower surface 27 of the upper end of the U-shaped protrusion 26 on the inner surfaces of the open end part 3 of the housing 1.
- the friction shoes 6, 7 are installed simultaneously.
- the barrier plates 8, 9 are installed.
- the wear liners 12, 13 are installed and fixed in the recesses of the side walls of the housing 1
- the U-shaped friction plates 10 are installed , 11 in such a way that the side the protrusions 33 of the U-shaped friction plates 10, 11 are in contact with the separated protrusions 34 of the pressure element 15.
- the dynamic load damper 16 consisting of blocks of elastic elements 41, is compressed, formed by two plates 18 and an elastomeric element 17 installed between them, to a position at which the device is removed. Then, the load from the press is removed from the friction wedge 5, all parts of the draft gear take their original working position.
- the lower protrusions 30 of the thrust arms 28 of the friction wedge 5 are located in the recess 31 of the pressing element 15 with a technological gap, thus providing an additional mutual positioning of the friction wedge 5 with respect to the pressure element 15 and preventing unplanned disassembly of the draft gear.
- the pressing element 15 transfers the force from the first 6, the second 7 friction shoes_ to the dynamic load absorber 16, consisting of blocks of elastic elements 41 formed by two plates 18 and an elastomeric element 17 installed between them, which is installed in the closed part of the housing 2 without the possibility of axial displacement and has persistent contact surface. Centering of the dynamic load absorber 16, consisting of blocks of elastic elements 41 formed by two plates 18 and an elastomeric element 17 installed between them, on the axis is carried out using a guide rod 14.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Surgical Instruments (AREA)
- Vending Machines For Individual Products (AREA)
- Earth Drilling (AREA)
- Vibration Dampers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2020397850A AU2020397850B2 (en) | 2019-12-06 | 2020-09-18 | Shock-absorbing device |
CA3160624A CA3160624A1 (en) | 2019-12-06 | 2020-09-18 | Shock-absorbing unit |
CN202080082845.3A CN114761303A (zh) | 2019-12-06 | 2020-09-18 | 减震单元 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2019140005A RU2736971C1 (ru) | 2019-12-06 | 2019-12-06 | Поглощающий аппарат |
RU2019140005 | 2019-12-06 |
Publications (1)
Publication Number | Publication Date |
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WO2021112722A1 true WO2021112722A1 (ru) | 2021-06-10 |
Family
ID=73543670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2020/050232 WO2021112722A1 (ru) | 2019-12-06 | 2020-09-18 | Поглощающий аппарат |
Country Status (5)
Country | Link |
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CN (1) | CN114761303A (ru) |
AU (1) | AU2020397850B2 (ru) |
CA (1) | CA3160624A1 (ru) |
RU (1) | RU2736971C1 (ru) |
WO (1) | WO2021112722A1 (ru) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2761676C1 (ru) * | 2021-07-07 | 2021-12-13 | Общество с ограниченной ответственностью "ЖД ТРАНС" | Аппарат поглощающий |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU169528U1 (ru) * | 2016-09-30 | 2017-03-22 | Александр Александрович Андреев | Поглощающий аппарат |
EA201600322A1 (ru) * | 2016-02-08 | 2017-08-31 | Олег Николаевич ГОЛОВАЧ | Фрикционный амортизатор |
CN107650940A (zh) * | 2017-09-20 | 2018-02-02 | 中国铁道科学研究院金属及化学研究所 | 一种机车用牵引缓冲装置 |
RU2654173C1 (ru) * | 2017-07-05 | 2018-05-16 | Алексей Петрович Болдырев | Фрикционный поглощающий аппарат |
RU189699U1 (ru) * | 2018-02-21 | 2019-05-30 | Олег Николаевич ГОЛОВАЧ | Поглощающий аппарат |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7264130B2 (en) * | 2004-01-16 | 2007-09-04 | Wabtec Holding Corp. | Housing for long travel high capacity friction draft gear assembly |
RU164701U1 (ru) * | 2015-11-11 | 2016-09-10 | Олег Николаевич ГОЛОВАЧ | Фрикционный амортизатор |
RU2670353C1 (ru) * | 2017-06-26 | 2018-10-22 | Александр Александрович Андреев | Поглощающий аппарат |
-
2019
- 2019-12-06 RU RU2019140005A patent/RU2736971C1/ru active
-
2020
- 2020-09-18 CA CA3160624A patent/CA3160624A1/en active Pending
- 2020-09-18 CN CN202080082845.3A patent/CN114761303A/zh active Pending
- 2020-09-18 WO PCT/RU2020/050232 patent/WO2021112722A1/ru active Application Filing
- 2020-09-18 AU AU2020397850A patent/AU2020397850B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA201600322A1 (ru) * | 2016-02-08 | 2017-08-31 | Олег Николаевич ГОЛОВАЧ | Фрикционный амортизатор |
RU169528U1 (ru) * | 2016-09-30 | 2017-03-22 | Александр Александрович Андреев | Поглощающий аппарат |
RU2654173C1 (ru) * | 2017-07-05 | 2018-05-16 | Алексей Петрович Болдырев | Фрикционный поглощающий аппарат |
CN107650940A (zh) * | 2017-09-20 | 2018-02-02 | 中国铁道科学研究院金属及化学研究所 | 一种机车用牵引缓冲装置 |
RU189699U1 (ru) * | 2018-02-21 | 2019-05-30 | Олег Николаевич ГОЛОВАЧ | Поглощающий аппарат |
Also Published As
Publication number | Publication date |
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CN114761303A (zh) | 2022-07-15 |
AU2020397850A1 (en) | 2022-07-07 |
AU2020397850B2 (en) | 2024-02-29 |
RU2736971C1 (ru) | 2020-11-23 |
CA3160624A1 (en) | 2021-06-10 |
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