CN114261418A - Primary axle box suspension device of railway vehicle bogie - Google Patents
Primary axle box suspension device of railway vehicle bogie Download PDFInfo
- Publication number
- CN114261418A CN114261418A CN202210048186.2A CN202210048186A CN114261418A CN 114261418 A CN114261418 A CN 114261418A CN 202210048186 A CN202210048186 A CN 202210048186A CN 114261418 A CN114261418 A CN 114261418A
- Authority
- CN
- China
- Prior art keywords
- axle box
- pull rod
- outer axle
- primary
- suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 67
- 230000035939 shock Effects 0.000 claims abstract description 25
- 239000006096 absorbing agent Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 3
- 238000005452 bending Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003739 neck Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Abstract
The invention discloses a primary axle box suspension device of a railway vehicle bogie, wherein a whole bogie wheel is used for primary suspension of an axle box arranged inside and outside each wheel, and the outer axle box suspension comprises an outer axle box positioning pull rod, a primary vertical shock absorber, an outer axle box spring component, an outer axle box body, an outer axle box bearing, an outer axle box end cover and an outer axle box bearing positioning retaining ring which are longitudinally arranged. The inner axle box suspension comprises an inner axle box positioning pull rod which is longitudinally arranged, an inner axle box spring component which is vertically arranged, an inner axle box body, an inner axle box bearing, an inner axle box end cover and an inner axle box bearing positioning retaining ring. By adopting the double-axle box primary suspension scheme, the stress state of the axle is better than that of the conventional outer axle box bogie and inner axle box bogie axles, so that the maximum light weight of the whole wheel set axle can be realized, and the unsprung mass of the bogie can be further reduced.
Description
Technical Field
The invention relates to the field of railway vehicle bogies, in particular to a primary axle box suspension device of a railway vehicle bogie.
Background
For the conventional railway vehicle inner axle box bogie and outer axle box bogie, a primary suspension device is arranged on one side of the wheel of the integral wheel pair and is respectively arranged on the outer side or the inner side. Under the static balance state of a vehicle, the stress of the whole wheel set is simplified into a simply supported beam structure, the vertical load of a primary suspension wheel set acts on two shaft necks respectively, the wheel set generates the counter force same with the vertical load, and the upward bending deformation and the bending moment are generated on the axle body of the axle. The axle is relatively weak, and then for the inner axlebox bogie, the same analysis method can be used, which is not described herein, and for the inner axlebox bogie, the axle body of the axle needs to be bent and deformed downwards. In summary, for the conventional outer axle box bogie and inner axle box bogie, the axle body needs to bear both torque and bending moment, and in order to meet the strength requirement, the axle radius is increased, the unsprung mass is increased, the wheel track action force of the bogie is large, and the self weight of the bogie is increased.
Disclosure of Invention
The invention aims to overcome the defects of large unsprung mass, poor axle bearing force, additional bending moment bearing requirement on an axle body and the like of a bogie in the prior art, and provides a primary axle box suspension device of a railway vehicle bogie.
In order to achieve the purpose, the invention provides the following technical scheme:
by adopting the primary axle box suspension device of the railway vehicle bogie, the primary axle box suspension device is arranged inside and outside each wheel of the integral bogie wheel pair. The outer axle box suspension comprises an outer axle box positioning pull rod, a vertical shock absorber, an outer axle box spring component, an outer axle box body, an outer axle box bearing, an outer axle box end cover and an outer axle box bearing positioning retaining ring, wherein the outer axle box positioning pull rod is longitudinally arranged. The outer axle box positioning pull rod is a single pull rod and comprises a pull rod body and two rubber joints, the rigidity of the rubber joints can be adjusted, the longitudinally arranged outer axle box positioning pull rod provides longitudinal and transverse positioning rigidity between the wheel pair and the framework, the outer axle box positioning pull rod is arranged in a centering mode in the vertical direction and the transverse direction of an outer bearing center, and the outer axle box positioning pull rod is connected with the middle of a side beam of the framework. The vertically arranged outer axle box spring components are two groups of single-coil springs which are respectively arranged at two sides of the top of the outer axle box body right above the center line of the outer axle box bearing. The primary vertical shock absorber provides damping for the entire primary suspension system, and the primary vertical shock absorber is arranged at a primary vertical shock absorber mounting seat in the center of the outer axle box end cover. The inner axle box suspension comprises an inner axle box positioning pull rod which is longitudinally arranged, an inner axle box spring component which is vertically arranged, an inner axle box body, an inner axle box bearing, an inner axle box end cover and an inner axle box bearing positioning retaining ring. The inner axle box positioning pull rod is a single pull rod and comprises a pull rod body and two rubber joints, the rigidity of the rubber joints can be adjusted, the longitudinally arranged inner axle box positioning pull rod also provides longitudinal and transverse positioning rigidity between the wheel pair and the framework, the inner axle box positioning pull rod is centered in the vertical direction and the transverse direction relative to the center of an inner bearing, and the inner axle box positioning pull rod is connected with the middle part of a side beam of the framework. The vertically arranged inner axle box spring components are two groups of single-coil springs which are vertical and symmetrical and are arranged on two sides of the top of the inner axle box body right above the center line of the inner bearing.
By adopting the axle box suspension device of the railway vehicle bogie, on the wheel at one side, two shaft necks can equally divide the vertical force at the side, the transverse distances from the vertical forces at two sides to the contact point of the wheel rail are equal, and when the vertical forces at two sides are respectively pressed on two sides of the contact point of the wheel rail, the vertical force and the resultant force of the reaction force of the wheel rail are mutually counteracted. Under vertical load, the shaft body does not bear additional bending moment, so the diameter of the shaft body can be reduced. On one side of the wheel, there are two axle journals, inner and outer, and the vertical load acting on the axle journals is halved, so that the diameter of the axle journals can be reduced. By adopting the double-axle box primary suspension scheme, the stress state of the axle is better than that of the conventional axle of the outer axle box bogie and the inner axle box bogie. By adopting the structure of the invention, compared with the traditional single-axle box bogie suspension element, the size of the spring suspension element is reduced, the size of the axle box is correspondingly reduced, the central span of the inner side axle box suspension device and the outer side axle box suspension device is reduced, the vertical acting force arm acting on the axle is further reduced, the stress condition is improved, and smaller bearings can be adopted.
By adopting the primary axle box suspension device of the railway vehicle bogie, the outer axle box suspension upper outer axle box positioning pull rod and the inner axle box suspension upper inner axle box positioning pull rod provide longitudinal positioning and transverse positioning between the wheel pair and the framework together. The primary vertical shock absorber provides primary suspension damping. The inner and outer sets of single coil springs provide a series of suspended impact mitigation and common load sprung mass.
Preferably, the outer axlebox spring member and the inner axlebox spring member together bear the framework and transmit the vertical force to the axlebox, and the outer axlebox spring member and the inner axlebox spring member adopt steel spring structures, so that the vertical deflection of the first system is large, and the rigidity is small.
Preferably, the outer axle box spring part and the inner axle box spring part are of rubber spring structures, so that the vertical deflection of the first axle box spring part is small, and the rigidity is large.
Preferably, the outer and inner axlebox spring members are disposed at the top of the axlebox, which reduces the longitudinal dimension of the axlebox, reduces the axlebox mass, and thus reduces the unsprung mass and overall mass of the bogie. The outer and inner axle box spring members are disposed on opposite sides of the inner and outer axle box bodies to reduce the axle box center of gravity, and thus the center of gravity of the frame and the truck.
Preferably, the outer axle box positioning pull rod is installed on the outer axle box body, the inner axle box positioning pull rod is installed on the inner axle box body, and the outer axle box positioning pull rod and the inner axle box positioning pull rod transmit longitudinal force and transverse force between the wheel pair and the framework together.
It is further preferred that the outer axlebox drag link and the inner axlebox drag link are placed on the outer side in the longitudinal direction of the bogie or alternatively mounted, i.e. one drag link is mounted on the outer side in the longitudinal direction of the bogie and the other drag link is mounted on the inner side in the longitudinal direction of the bogie. The outer axle box positioning pull rod and the inner axle box positioning pull rod jointly provide longitudinal positioning and transverse positioning between the wheel pair and the framework, the positioning mode is not limited to the pull rod positioning mode provided by the scheme, and the positioning mode adopts the prior art scheme, such as rotating arm positioning, pulling plate positioning, rubber positioners and the like.
In summary, the present invention is characterized in that:
by adopting the primary axle box suspension device of the railway vehicle bogie, the vertical force applied to the wheel pair can be applied to two sides of the contact point of the wheel rail of the unilateral wheel, the stress at the axle journal is reduced by half, the axle is uniformly stressed, and the axle body does not bear additional bending moment under the action of the vertical load. Through adopting this biax case primary suspension scheme, the axletree stress state is better than conventional outer axle box bogie and inner axle box bogie axletree, thereby can realize whole wheel pair axletree at utmost's lightweight, and then realize littleer bogie unsprung mass, enable inner axle box bearing and outer axle box bearing centre-to-centre wheel rail contact point lateral distance simultaneously and equal, make axle box spring part set the same part, make a primary axle box suspension device compact structure, moreover, the steam generator is simple in structure, make the bogie wheel sufficient to the inboard space, be convenient for the arrangement of all the other spare parts of bogie.
Drawings
Fig. 1 is a schematic view of an outer axle box suspension structure of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
fig. 2 is a schematic view of an inner axle box suspension structure of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
FIG. 3 is a schematic structural view of an outer axle box body of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
FIG. 4 is a schematic structural view of an inner axle box body of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
fig. 5 is a schematic view of an outer axle box suspension installation of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
fig. 6 is a schematic view of an inner axle box suspension installation of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
fig. 7 is a structural schematic view of a frame side member of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
fig. 8 is a schematic structural view of an outer axle box positioning link or an inner axle box positioning link of a series of axle box suspension devices of a railway vehicle bogie in embodiment 1;
the labels in the figure are: 1-outer axle box body, 11-outer axle box positioning pull rod mounting seat, 12-outer axle box spring seat, 2-outer axle box spring component, 3-outer axle box positioning pull rod, 31-pull rod body, 32-rubber joint, 4-outer axle box end cover, 41-primary vertical shock absorber mounting seat, 5-primary vertical shock absorber, 6-inner axle box body, 61-inner axle box spring seat, 62-inner axle box positioning pull rod mounting seat, 7-inner axle box end cover, 8-inner axle box spring component, 9-inner axle box bearing positioning retainer ring, 10-inner axle box positioning pull rod, 13-inner axle box bearing, 14-frame side beam, 141-frame side beam outer axle box positioning pull rod mounting seat, 142-frame side beam inner axle box positioning pull rod mounting seat, 143-frame side beam primary vertical shock absorber mounting seat.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-8
The invention relates to a primary axle box suspension device of a railway vehicle bogie. The outer axle box suspension comprises an outer axle box positioning pull rod 3, a vertical shock absorber 5, an outer axle box spring part 2, an outer axle box body 1, an outer axle box bearing, an outer axle box end cover 4 and an outer axle box bearing positioning retainer ring, wherein the outer axle box positioning pull rod is longitudinally arranged. The outer axle box spring member 2 comprises two sets of elastic elements, which are disposed on the top of the outer axle box 1, and one end of which is mounted on the outer axle box spring seat 12 and the other end of which is mounted on the spring seat on the frame side member. The outer axle box positioning pull rod 3 provides longitudinal and transverse positioning rigidity for wheel pairs and a framework, one end of the outer axle box positioning pull rod 3 is connected with the outer axle box positioning pull rod mounting seat 11, and the other end of the outer axle box positioning pull rod is connected with the outer axle box positioning pull rod mounting seat 141 of the side beam of the framework. The primary vertical shock absorber 5 provides damping throughout the primary suspension system. The inner axlebox suspension comprises longitudinally arranged inner axlebox positioning pull rods 10, vertically arranged inner axlebox spring members 8, an inner axlebox body 6, inner axlebox bearings 13, inner axlebox end covers 7 and inner axlebox bearing positioning retaining rings 9. The inner axle box spring member 8 comprises two sets of elastic elements, which are disposed on the top of the inner axle box 6, and one end of which is mounted on the inner axle box spring seat 61 and the other end of which is mounted on a spring seat on the frame side member. One end of the longitudinally arranged inner axle box positioning pull rod 10 is connected with the inner axle box positioning pull rod mounting seat 62, and the other end is connected with the inner axle box positioning pull rod mounting seat 142 of the framework side beam. The vertically arranged outer 2 and inner 8 axlebox spring members are coil steel springs of the same parameters. The vertical suspension, longitudinal positioning and transverse positioning of the primary suspension device can be realized by adopting the device. The suspension structure of the axle box is compact.
By adopting the primary axle box suspension device of the railway vehicle bogie, the outer axle box positioning pull rod 3 and the inner axle box positioning pull rod 10 have the functions of providing longitudinal positioning and transverse positioning of the primary suspension device and transferring longitudinal force and transverse force between a wheel pair and a frame, and the vertically arranged outer axle box spring part 2 and the vertically arranged inner axle box spring part 8 provide vertical force between the frame and the wheel pair.
According to the primary axle box suspension device of the railway vehicle bogie, the outer axle box positioning pull rod 3 and the inner axle box positioning pull rod 10 are positioned by adopting single pull rods with simple structures and light weight, so that the unsprung mass of the bogie and the mass of the primary suspension device can be reduced, the masses of the framework side beam 14 and the whole bogie are further reduced, and the lightweight of the bogie is facilitated.
By adopting the primary axle box suspension device of the railway vehicle bogie, four groups of spring components arranged on the outer axle box and the inner axle box suspension adopt steel spring structures with the same parameters, so that primary vertical deflection is larger, rigidity is smaller, certain movement deflection can be formed between the framework side beam 14 and the outer axle box body 1 and the inner axle box body 6, impact between the framework side beam 14 and the axle box can be relieved, the primary vertical shock absorber 5 of the outer axle box suspension is arranged on the primary vertical shock absorber mounting seat 41 of the outer axle box end cover 4, interference with the outer axle box spring component 2 is avoided, spatial use of the primary suspension device is more reasonable, and the outer axle box spring component 2 and the primary vertical shock absorber 5 are matched for use, so that the effect of buffering and shock absorption can be achieved, and the stability of vehicle operation are ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A primary axlebox suspension for a railway vehicle bogie, characterised in that the primary axlebox suspension comprises an outer axlebox suspension and an inner axlebox suspension. The outer axle box suspension comprises an outer axle box body (1), an outer axle box spring component (2) which is vertically arranged, an outer axle box positioning pull rod (3) which is longitudinally arranged, a vertical shock absorber (5) which is vertically arranged, an outer axle box bearing positioning retaining ring, an outer axle box bearing and an outer axle box end cover (4). The inner axle box suspension comprises an inner axle box positioning pull rod (10), an inner axle box body (6), an inner axle box end cover (7), an inner axle box bearing positioning retainer ring (9), an inner axle box spring component (8) and an inner axle box bearing (13) which are vertically arranged. The outer axle box body (1) is provided with an outer axle box positioning pull rod mounting seat (11), an outer axle box spring seat (12) and a vertical shock absorber mounting seat (41). The inner shaft box body (6) comprises an inner shaft box spring seat (61) and an inner shaft box positioning pull rod mounting seat (62). One end of the outer axle box positioning pull rod (3) which is longitudinally arranged is connected with the outer axle box positioning pull rod mounting seat (11), and the other end of the outer axle box positioning pull rod mounting seat is connected with the outer axle box positioning pull rod mounting seat (141) of the framework side beam. One end of the longitudinally arranged inner axle box positioning pull rod (10) is connected with the inner axle box positioning pull rod mounting seat (62), and the other end is connected with the inner axle box positioning pull rod mounting seat (142) of the framework side beam. The vertical arrangement primary vertical shock absorber (5) is arranged on a primary vertical shock absorber mounting seat (41) of the outer axle box end cover (4), one end of the vertical arrangement primary vertical shock absorber is arranged on the primary vertical shock absorber mounting seat (41), and the other end of the vertical arrangement primary vertical shock absorber is arranged on a primary vertical shock absorber mounting seat (143) of the frame side beam. The vertically arranged outer axle box spring component (2) is arranged at the top of the outer axle box body (1), one end of the vertically arranged outer axle box spring component is arranged on an outer axle box spring seat (12), one end of the vertically arranged outer axle box spring component is arranged on an outer axle box spring seat of the frame side beam, and the longitudinal direction of the vertically arranged outer axle box spring component is aligned with the center of an outer axle box bearing. The inner axlebox spring member (8) is mounted on top of the inner axlebox housing (6) with one end mounted on the inner axlebox spring seat (61) and one end mounted on the inner axlebox spring seat of the frame side beam with the longitudinal direction aligned centrally with respect to the inner axlebox bearing (13). The transverse distances from the centers of the outer axle box bearing and the inner axle box bearing (13) to the contact point of the wheel rail are equal.
2. A series of axlebox suspension for a railway vehicle bogie according to claim 1, characterized in that the longitudinally arranged outer axlebox positioning tie rod (3) is a single tie rod comprising a tie rod body (31) and two rubber joints (32), the stiffness of the rubber joints (32) being adjustable. The longitudinally arranged inner axle box positioning pull rod (10) is also a single pull rod and comprises a pull rod body (31) and two rubber joints (32), and the rigidity of the rubber joints (32) can be adjusted. The longitudinally arranged outer axle box positioning pull rod (3) and the longitudinally arranged inner axle box positioning pull rod (10) jointly provide longitudinal and transverse positioning rigidity between the wheel pair and the framework.
3. A primary suspension arrangement for a railway vehicle bogie according to claim 1, characterised in that the vertically arranged outer (2) and vertically arranged inner (8) axle box spring members are each formed by two identical sets of single coil steel springs, the outer axle box spring member (2) being mounted on an outer axle box spring seat (13) with the longitudinal direction aligned with respect to the outer axle box bearing centre. The inner pedestal spring member (8) is mounted on an inner pedestal spring seat (61) with the longitudinal direction aligned centrally with respect to the inner pedestal bearing (13). The outer (2) and inner (8) axle box spring members provide suitable vertical suspension stiffness for the axle boxes and frame side rails.
4. A primary suspension unit for a railway vehicle bogie according to claim 1 characterized in that said vertically arranged primary vertical shock absorber (5) is arranged in parallel with said vertically arranged outer box spring member (2). The primary vertical shock absorber (5) provides damping of the primary suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048186.2A CN114261418A (en) | 2022-01-17 | 2022-01-17 | Primary axle box suspension device of railway vehicle bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048186.2A CN114261418A (en) | 2022-01-17 | 2022-01-17 | Primary axle box suspension device of railway vehicle bogie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114261418A true CN114261418A (en) | 2022-04-01 |
Family
ID=80832963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210048186.2A Pending CN114261418A (en) | 2022-01-17 | 2022-01-17 | Primary axle box suspension device of railway vehicle bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114261418A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0547010A1 (en) * | 1991-12-10 | 1993-06-16 | FIREMA RICERCHE S.r.l. | A multipurpose rail bogie truck |
| WO2017049995A1 (en) * | 2015-09-22 | 2017-03-30 | 中车南京浦镇车辆有限公司 | Direct-drive bogie having axle-mounted permanent magnet electric motor |
| CN211893230U (en) * | 2020-03-02 | 2020-11-10 | 西南交通大学 | Primary suspension device of railway vehicle |
| CN112356866A (en) * | 2020-12-07 | 2021-02-12 | 西南交通大学 | Primary suspension device for railway vehicle bogie |
| CN112356871A (en) * | 2020-12-07 | 2021-02-12 | 西南交通大学 | Bogie for inner axle box of railway vehicle |
-
2022
- 2022-01-17 CN CN202210048186.2A patent/CN114261418A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0547010A1 (en) * | 1991-12-10 | 1993-06-16 | FIREMA RICERCHE S.r.l. | A multipurpose rail bogie truck |
| WO2017049995A1 (en) * | 2015-09-22 | 2017-03-30 | 中车南京浦镇车辆有限公司 | Direct-drive bogie having axle-mounted permanent magnet electric motor |
| CN211893230U (en) * | 2020-03-02 | 2020-11-10 | 西南交通大学 | Primary suspension device of railway vehicle |
| CN112356866A (en) * | 2020-12-07 | 2021-02-12 | 西南交通大学 | Primary suspension device for railway vehicle bogie |
| CN112356871A (en) * | 2020-12-07 | 2021-02-12 | 西南交通大学 | Bogie for inner axle box of railway vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8534200B2 (en) | Suspension apparatus and method | |
| CN110877624B (en) | Axle box built-in trailer bogie of high-speed motor train unit | |
| WO2022148173A1 (en) | Frame, bogie, and rail vehicle | |
| CN111301471A (en) | Railway vehicle bogie | |
| CN214356035U (en) | Articulated frame bogie for railway wagon | |
| CN112356871A (en) | Bogie for inner axle box of railway vehicle | |
| CN111348067B (en) | Bogie and rail vehicle | |
| CN113771905B (en) | Single-wheel-pair hinged type middle bogie | |
| CN112356866A (en) | Primary suspension device for railway vehicle bogie | |
| CN112356870A (en) | High-speed railway vehicle bogie | |
| CN111703460B (en) | Bogie for railway vehicle and railway vehicle | |
| CN114056367B (en) | Inside suspension direct-drive radial bogie and truck | |
| CN112356869A (en) | High-speed railway vehicle bogie | |
| CN111703461B (en) | Bogie for railway vehicle and railway vehicle | |
| WO2021135198A1 (en) | Bolster-less framed bogie suitable for high-speed freight wagon | |
| CN114261418A (en) | Primary axle box suspension device of railway vehicle bogie | |
| CN217374496U (en) | Primary double-axle box suspension device between vehicle bogie wheel pair and frame | |
| CN216969671U (en) | Primary double-axle box suspension device for railway vehicle bogie | |
| CN214356036U (en) | High-speed railway vehicle bogie | |
| CN214356027U (en) | Primary suspension device for railway vehicle bogie | |
| RU2613642C1 (en) | High-speed carriage for locomotive underframe | |
| CN211893230U (en) | Primary suspension device of railway vehicle | |
| CN211809616U (en) | Swing bolster-free framework type bogie suitable for high-speed railway wagon | |
| CN114248815A (en) | Railway vehicle bogie adopting double-shaft box suspension and permanent magnet direct drive motor | |
| CN112356867A (en) | Articulated framework bogie of rail vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |