CN212709371U - Bogie and rail engineering vehicle - Google Patents
Bogie and rail engineering vehicle Download PDFInfo
- Publication number
- CN212709371U CN212709371U CN202021602468.5U CN202021602468U CN212709371U CN 212709371 U CN212709371 U CN 212709371U CN 202021602468 U CN202021602468 U CN 202021602468U CN 212709371 U CN212709371 U CN 212709371U
- Authority
- CN
- China
- Prior art keywords
- bogie
- axle
- gear box
- box
- traction motor
- 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.)
- Active
Links
Images
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The embodiment of the application provides a bogie and a rail engineering vehicle, wherein the bogie comprises two wheel pairs, a framework and two power devices, the two wheel pairs are oppositely arranged, and each wheel pair comprises an axle and two wheels fixed on two sides of the axle; each wheel pair is provided with two axle boxes, and the two axle boxes are arranged on the axle and positioned between the two wheels; the frame comprises two opposite side beams and a cross beam for connecting the two side beams, and the side beams are perpendicular to the axle and connected to the axle box; the two power devices are respectively used for driving the two wheel pairs to move, and are symmetrically arranged relative to the center of the bogie; the power device comprises a traction motor, a transmission mechanism and a gear box, wherein the traction motor is arranged on the framework, the traction motor is connected with the input end of the gear box through the transmission mechanism, and the output end of the gear box is connected with the axle. The embodiment of the application is beneficial to reducing the size of the bogie, so that the bogie is suitable for running on a track with smaller limit.
Description
Technical Field
The application relates to a rail vehicle manufacturing technology, in particular to a bogie and a rail engineering vehicle.
Background
The bogie is arranged between the vehicle body and the track and is one of the most important parts on the track engineering vehicle. The main functions of the bogie are as follows: the supporting vehicle body is used for bearing and transmitting various loads and acting forces from the vehicle body to wheels or from wheel tracks to the vehicle body; the safe operation of the vehicle is ensured, and the vehicle can flexibly operate along a straight line and smoothly pass through a curve; the interaction between the vehicle and the wheel rail is alleviated, the vibration and the impact are reduced, and the running stability and the safety of the vehicle are improved.
In the related art, the rail-bound engineering vehicle generally employs an axle box external bogie. The bogie with the external axle box comprises a wheel pair, an axle box, a framework, a power device and the like, wherein the wheel pair comprises an axle and wheels arranged on two sides of the axle, two ends of the axle respectively penetrate through the two wheels and then extend out of the wheels, the axle box is arranged on the extending part of the axle, the axle box is connected with the framework through a series of springs, the power device is arranged on the framework, and the output end of the power device is connected with the axle.
The inventor believes that with the solutions of the related art, the lateral dimensions of the bogie are large, limited by the overall structural layout constraints of the bogie, and the space in which the lateral dimensions of the bogie can be reduced is limited, and is not suitable for running on a track with small limits.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a bogie and a rail engineering vehicle, which are mainly used for solving the problem that the transverse size of the bogie is large in the related technology.
According to a first aspect of embodiments of the present application, there is provided a bogie including:
the two wheel pairs are oppositely arranged and comprise an axle and two wheels fixed on two sides of the axle;
the two axle boxes are arranged on each wheel pair, and are arranged on the axle and positioned between the two wheels;
the frame comprises two oppositely arranged side beams and a cross beam for connecting the two side beams, and the side beams are perpendicular to the axle and connected to the axle box;
the two power devices are respectively used for driving the two wheel pairs to move, and are symmetrically arranged relative to the center of the bogie; the power device comprises a traction motor, a transmission mechanism and a gear box, wherein the traction motor is arranged on the framework, the traction motor is connected with the input end of the gear box through the transmission mechanism, and the output end of the gear box is connected with the axle.
The bogie as described above, optionally, the transmission mechanism includes a speed reducer and an elastic coupling connected with each other, the traction motor is connected with the speed reducer, and the elastic coupling is connected with the input end of the gear box;
two speed reducer mounting seats are arranged below the cross beam, the two speed reducer mounting seats are respectively positioned at the positions, close to the side beams, of the cross beam, and the speed reducers are arranged on the speed reducer mounting seats; two side surfaces of the cross beam facing the axle are respectively provided with a gear box hanging seat, and the gear box is arranged on the gear box hanging seat;
the traction motor, the speed reducer, the elastic coupling and the gear box of the same power device are coaxially arranged and are parallel to the side beam.
The bogie as described above, optionally, the transmission mechanism includes a right-angle reducer and a universal coupling, the traction motor is connected to the right-angle reducer, and the universal coupling is connected to the input end of the gear box;
the side of each side beam, which is far away from the cross beam, is provided with a right-angle reducer mounting seat, the right-angle reducer mounting seats on the two side beams are symmetrically arranged relative to the center of the bogie, and the right-angle reducers are arranged on the right-angle reducer mounting seats; the traction motor is arranged close to the cross beam, and the gear box is fixed on the axle.
The bogie as described above, optionally, the cross beam is welded and fixed at the middle part of the side beam; the transverse beam and the side beam are both box-shaped structures, and each box-shaped structure comprises an upper cover plate, a lower cover plate and a web plate, wherein the upper cover plate and the lower cover plate are arranged oppositely, and the web plate is connected with the upper cover plate and the lower cover plate.
Optionally, the bogie as described above further includes a bearing device disposed on the cross beam, where the bearing device includes a core disc and a side bearing disposed on an upper surface of the cross beam, the core disc is disposed in a middle of the cross beam, and the side bearing is disposed at both ends of the cross beam.
The bogie as described above, optionally, further comprising a suspension lockout device comprising a head axle cylinder, a lift car cylinder, and a gearbox boom lockout cylinder; the top shaft oil cylinder is arranged on one side of the side beam, which is far away from the cross beam, and the top shaft oil cylinder is arranged on the axle box; the jacking oil cylinders are arranged on the cross beam and positioned on two sides of the core disc; the gearbox boom lock cylinder is disposed between the frame and the gearbox boom.
Optionally, a secondary spring mounting seat is further disposed on the side beam, and the secondary spring mounting seats are disposed at two ends of the upper surface of the side beam; the lower surface of the side beam is provided with a series spring mounting seat, the axle box is provided with a corresponding series spring fixing seat, and the axle box is connected with the side beam through a series spring.
Optionally, a hydraulic shock absorber mounting seat is further disposed on a side of the side beam facing the cross beam, the hydraulic shock absorber mounting seats are disposed at both ends of the side beam, one end of the hydraulic shock absorber is fixed in the hydraulic shock absorber mounting seat, and the other end of the hydraulic shock absorber is connected to the axle box.
The bogie as described above optionally further comprises unit brakes, one side of each wheel is provided with the unit brakes, the unit brakes are single-side brake shoe tread brakes, and four unit brakes are symmetrically arranged relative to the center of the bogie.
According to a second aspect of embodiments of the present application, there is provided a rail work vehicle comprising a vehicle body and a bogie as described in any one of the above, the vehicle body being provided on the bogie.
By adopting the bogie and the rail engineering vehicle according to the embodiment of the application, the bogie comprises two wheel pairs, a framework and two power devices, the two wheel pairs are oppositely arranged, and each wheel pair comprises an axle and two wheels fixed on two sides of the axle; each wheel pair is provided with two axle boxes, and the two axle boxes are arranged on the axle and positioned between the two wheels; the frame comprises two opposite side beams and a cross beam for connecting the two side beams, and the side beams are perpendicular to the axle and connected to the axle box; the two power devices are respectively used for driving the two wheel pairs to move, and are symmetrically arranged relative to the center of the bogie; the power device comprises a traction motor, a transmission mechanism and a gear box, wherein the traction motor is arranged on the framework, the traction motor is connected with the input end of the gear box through the transmission mechanism, and the output end of the gear box is connected with the axle. The bogie of the embodiment of the application is compact in structure, facilitates arrangement of other parts on the bogie, is beneficial to reducing the size of the bogie, and is suitable for running on a track with a small limit by arranging the axle boxes on the inner sides of the wheels and symmetrically arranging the two power devices relative to the center of the bogie.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic illustration of a bogie according to an embodiment of the present application;
FIG. 2 is a schematic bottom view of a truck according to an embodiment of the present application;
FIG. 3 is a schematic bottom view of a truck according to another embodiment of the present application;
FIG. 4 is a simplified structural diagram of a framework provided by an embodiment of the present application;
shown in fig. 5 is a simplified bottom view of a frame according to an embodiment of the present application.
Reference numerals:
10-wheel pair; 11-axle; 12-a wheel;
20-axle boxes;
30-a framework; 31-side beam; 311-jack shaft oil cylinder; 312-secondary spring mount; 313-a spring mount; 314-hydraulic shock absorber mount; 32-a cross beam; 321-reducer mounting base; 322-gearbox hanging seat; 323-core disc; 324-side bearings;
40-a power plant; 41-a traction motor; 42-a gearbox; 43-a reducer; 44-elastic coupling; 45-right angle reducers; 46-universal coupling;
50-hydraulic shock absorber;
60-unit brake.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
FIG. 1 is a schematic illustration of a bogie according to an embodiment of the present application; FIG. 2 is a schematic bottom view of a truck according to an embodiment of the present application; FIG. 3 is a schematic bottom view of a truck according to another embodiment of the present application; FIG. 4 is a simplified structural diagram of a framework provided by an embodiment of the present application; shown in fig. 5 is a simplified bottom view of a frame according to an embodiment of the present application. Please refer to fig. 1-5.
As shown in fig. 1, the present embodiment provides a bogie including:
two wheel pairs 10, two wheel pairs 10 are relative to each other, and wheel pair 10 is arranged below the bogie and is used for contacting with the track. Each wheel pair 10 comprises an axle 11 and two wheels 12 fixed on the outer peripheral surface of the axle 11, the wheels 12 are direct parts of the bogie contacting with the track, and the axle 11 is used for transmitting the power of the power device 40 to the wheels 12 to drive the wheels 12 to move along the track.
And the axle boxes 20 are arranged on each wheel pair 10, two axle boxes 20 are arranged on the axle 11 and between two wheels 12, and the axle boxes 20 are used for realizing connection between the wheel pairs 10 and the framework 30.
The frame 30 includes two side beams 31 oppositely disposed and a cross beam 32 connecting the two side beams 31, the side beams 31 are perpendicular to the axle 11 and connected to the axle box 20, and the frame 30 provides mounting support for other parts on the bogie.
The two power devices 40 are respectively used for driving the two wheel pairs 10 to move, and the two power devices 40 are symmetrically arranged relative to the center of the bogie; in this embodiment, the center of the bogie refers to a point where the axis of the cross member 32 is equidistant from the two side members 31 as shown in fig. 2 or 3, that is, the center of the bottom view plane of the bogie.
The power device 40 comprises a traction motor 41, a transmission mechanism and a gear box 42, wherein the traction motor 41 is arranged on the framework 30, the traction motor 41 is connected with the input end of the gear box 42 through the transmission mechanism, and the output end of the gear box 42 is connected with an axle.
The bogie of the embodiment has the advantages that the axle boxes 20 are arranged on the inner sides of the wheels 12, and the two power devices 40 are symmetrically arranged relative to the center of the bogie, so that the bogie is compact in structure, the arrangement of other parts on the bogie is convenient, the size of the bogie is reduced, and the bogie is suitable for running on a track with smaller limitation.
Specifically, in an alternative embodiment, as shown in fig. 2, the transmission mechanism includes a reducer 43 and an elastic coupling 44 connected to each other, the traction motor 41 is connected to the reducer 43, and the elastic coupling 44 is connected to the input end of the gear box 42.
Two speed reducer mounting seats 321 are arranged below the cross beam 32, the two speed reducer mounting seats 321 are respectively positioned at the positions of the cross beam 32 close to the side beam 31, and the speed reducer is arranged on the speed reducer mounting seats 321; both sides of the cross beam 32 facing the axle 11 are provided with gear box suspension brackets 322, and the gear box is arranged on the gear box suspension brackets 322.
In the present embodiment, the traction motor 41, the reduction gear 43, the elastic coupling 44, and the gear box 42 of the same power unit 40 are coaxially provided and are parallel to the side member 31.
The bogie of the embodiment has a compact structure, facilitates the arrangement of other parts on the bogie, and is beneficial to reducing the size of the bogie, so that the bogie is suitable for running on a track with a smaller limit.
In another alternative embodiment, as shown in fig. 3, the transmission mechanism includes a right angle reducer 45 and a universal coupling 46, the traction motor 41 is connected to the right angle reducer 45, and the universal coupling 46 is connected to the input end of the gear box 42.
The side beam 31 deviating from the cross beam 32 is provided with a right-angle reducer mounting seat, the right-angle reducer mounting seats on the two side beams 32 are symmetrically arranged relative to the center of the bogie, and the right-angle reducers are arranged on the right-angle reducer mounting seats; the traction motor 41 is disposed near the cross member 32, and the gear box 42 is fixed to the axle 11.
The present embodiment, which arranges the traction motor 41 and the right angle reducer 45 outside the frame, is advantageous for further reducing the size of the bogie, so that the bogie is suitable for running on a track with a small limit.
Further, as shown in fig. 4, the cross member 32 of the present embodiment is welded and fixed to the middle of the side member 31, so that the frame is formed into an "H" shape as a whole; the cross beam 32 and the side beam 31 are both box-shaped structures, each box-shaped structure comprises an upper cover plate, a lower cover plate and a web plate, the upper cover plate and the lower cover plate are arranged oppositely, and two adjacent plates can be fixedly connected in a welding connection mode.
Optionally, the beam 32 of this embodiment is further provided with a bearing device, the bearing device includes a core plate 323 and a side bearing 324, the core plate 323 is disposed in the middle of the beam 32, and the two ends of the beam 32 are both provided with the side bearing 324. The core plate 323 is adapted to a core plate arranged on the vehicle body, and a hoisting device is arranged between the core plate and the core plate; long travel rubber spring side bearings may be used for side bearings 324.
Optionally, the bogie of this embodiment further comprises a suspension locking device comprising a head axle cylinder 311, a topping vehicle cylinder and a gearbox boom locking cylinder; the top shaft oil cylinder 311 is arranged on one side of the side beam 31 departing from the cross beam 32, and the top shaft oil cylinder 311 is arranged on the axle box 20; the jacking oil cylinders are arranged on the cross beam 32 and positioned on two sides of the core plate 323; a gearbox boom lock cylinder is disposed between the frame 30 and the gearbox boom.
Further, the side member 31 of the present embodiment is further provided with a secondary spring mounting seat 312, the secondary spring mounting seat 312 is provided at both ends of the upper surface of the side member 31, the secondary spring mounting seat 312 is used for connecting a secondary spring, and the bogie is connected to the vehicle body through the secondary spring. A series spring mounting seat 313 is arranged on the lower surface of the side beam 31, a corresponding series spring fixing seat is arranged on the axle box 20, and the axle box 20 and the side beam 31 are connected through a series spring.
Optionally, the side of the side beam 31 facing the cross beam 32 of the present embodiment is further provided with a hydraulic damper mounting seat 314, both ends of the side beam 31 are provided with hydraulic damper mounting seats 314, one end of the hydraulic damper 50 is fixed in the hydraulic damper mounting seat 314, and the other end is connected to the axle box 20. That is, two primary springs and one hydraulic damper 50 are disposed between each of the axleboxes 20 and the frame 30 in the present embodiment.
Optionally, the bogie of the present embodiment further comprises a unit brake 60, the unit brake 60 is disposed on one side of each wheel 12, the unit brake 60 is a single-side shoe tread brake, and the four unit brakes 60 are symmetrically disposed with respect to the center of the bogie.
The truck of this embodiment conducts and dampens vertical forces by a series of springs mounted between the frame 30 and the axlebox 20, ensuring proper amount of lateral movement between the wheelset 10 and the frame 30. When the whole bogie is lifted, the lifting device on the axle box 20 prevents the framework 30 from being separated from the wheel pair 10. When the vehicle is in traction movement, the traction motor 41 operates and drives the wheel set 10 through the transmission mechanism and the gear box 42, and the traction is transmitted to the framework 30 through a series of springs on the axle box 20 on the inner side of the wheel set 10, and then the traction device on the framework 30 transmits the traction to the vehicle body. When the vehicle brakes, the unit brake 60 transmits the braking force to the wheel pair 10, then the unit brake is transmitted to the framework 30 by a series of springs, and then the traction device on the framework 30 transmits the braking force to the vehicle body to brake the vehicle.
Example two
The embodiment provides a rail engineering vehicle, which comprises a vehicle body and a bogie as described in the first embodiment, wherein the vehicle body is arranged on the bogie.
The track-bound work vehicle of the present embodiment is suitable for running on a track with a small limit because it employs the bogie described in the first embodiment.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A bogie, comprising:
the two wheel pairs are oppositely arranged and comprise an axle and two wheels fixed on two sides of the axle;
the two axle boxes are arranged on each wheel pair, and are arranged on the axle and positioned between the two wheels;
the frame comprises two oppositely arranged side beams and a cross beam for connecting the two side beams, and the side beams are perpendicular to the axle and connected to the axle box;
the two power devices are respectively used for driving the two wheel pairs to move, and are symmetrically arranged relative to the center of the bogie; the power device comprises a traction motor, a transmission mechanism and a gear box, wherein the traction motor is arranged on the framework, the traction motor is connected with the input end of the gear box through the transmission mechanism, and the output end of the gear box is connected with the axle.
2. The bogie according to claim 1, wherein the transmission mechanism comprises a reducer and an elastic coupling which are connected with each other, the traction motor is connected with the reducer, and the elastic coupling is connected with an input end of the gear box;
two speed reducer mounting seats are arranged below the cross beam, the two speed reducer mounting seats are respectively positioned at the positions, close to the side beams, of the cross beam, and the speed reducers are arranged on the speed reducer mounting seats; two side surfaces of the cross beam facing the axle are respectively provided with a gear box hanging seat, and the gear box is arranged on the gear box hanging seat;
the traction motor, the speed reducer, the elastic coupling and the gear box of the same power device are coaxially arranged and are parallel to the side beam.
3. The bogie according to claim 1, wherein the transmission mechanism comprises a right-angle reducer and a universal coupling, the traction motor is connected with the right-angle reducer, and the universal coupling is connected with an input end of the gear box;
the side of each side beam, which is far away from the cross beam, is provided with a right-angle reducer mounting seat, the right-angle reducer mounting seats on the two side beams are symmetrically arranged relative to the center of the bogie, and the right-angle reducers are arranged on the right-angle reducer mounting seats; the traction motor is arranged close to the cross beam, and the gear box is fixed on the axle.
4. A bogie as claimed in claim 2 or 3 in which the cross member is welded and secured to the central portion of the side member; the transverse beam and the side beam are both box-shaped structures, and each box-shaped structure comprises an upper cover plate, a lower cover plate and a web plate, wherein the upper cover plate and the lower cover plate are arranged oppositely, and the web plate is connected with the upper cover plate and the lower cover plate.
5. The bogie according to claim 4, wherein the crossbeam is further provided with a bearing device, the bearing device comprises a core disc and a side bearing which are arranged on the upper surface of the crossbeam, the core disc is arranged in the middle of the crossbeam, and the side bearing is arranged at both ends of the crossbeam.
6. The bogie of claim 5, further comprising a suspension lockout device comprising a head axle cylinder, a topping vehicle cylinder, and a gearbox boom lockout cylinder; the top shaft oil cylinder is arranged on one side of the side beam, which is far away from the cross beam, and the top shaft oil cylinder is arranged on the axle box; the jacking oil cylinders are arranged on the cross beam and positioned on two sides of the core disc; the gearbox boom lock cylinder is disposed between the frame and the gearbox boom.
7. The bogie of claim 6, wherein the side beam is further provided with a secondary spring mounting seat, and the secondary spring mounting seats are arranged at two ends of the upper surface of the side beam; the lower surface of the side beam is provided with a series spring mounting seat, the axle box is provided with a corresponding series spring fixing seat, and the axle box is connected with the side beam through a series spring.
8. The bogie according to claim 7, wherein the side beam is further provided with a hydraulic damper mounting seat on a side facing the cross beam, the hydraulic damper mounting seats are provided on both ends of the side beam, one end of the hydraulic damper is fixed in the hydraulic damper mounting seat, and the other end of the hydraulic damper is connected with the axle box.
9. The bogie according to claim 8, further comprising a unit brake provided on one side of each of the wheels, the unit brakes being single-sided shoe tread brakes, four of the unit brakes being symmetrically disposed with respect to a center of the bogie.
10. A rail-bound work vehicle, characterized in that it comprises a body and a bogie as claimed in any one of claims 1-9, said body being arranged on said bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602468.5U CN212709371U (en) | 2020-08-05 | 2020-08-05 | Bogie and rail engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602468.5U CN212709371U (en) | 2020-08-05 | 2020-08-05 | Bogie and rail engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212709371U true CN212709371U (en) | 2021-03-16 |
Family
ID=74913542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021602468.5U Active CN212709371U (en) | 2020-08-05 | 2020-08-05 | Bogie and rail engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212709371U (en) |
-
2020
- 2020-08-05 CN CN202021602468.5U patent/CN212709371U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111891150A (en) | Bogie and rail engineering vehicle | |
| CN101979266B (en) | Power bogie with independent wheels for 100 percent low-floor light rail vehicles | |
| CN102582645B (en) | Electric transmission bogie for track engineering vehicle | |
| CN102963382B (en) | A kind of railway goods train bogie | |
| CN114179843B (en) | Traction device, bogie and rail vehicle | |
| WO2017219555A1 (en) | Frame of bogie | |
| WO2021022901A1 (en) | Bogie and rail vehicle | |
| CN202987174U (en) | Railway freight car steering frame | |
| CN202413820U (en) | Electric drive bogie for rail engineering vehicles | |
| WO2023093797A1 (en) | Double-layer side beam bogie and rail vehicle | |
| CN114194241A (en) | Bogie and rail vehicle | |
| CN114162161B (en) | Underframe, car body and rail car | |
| WO2021068333A1 (en) | Bogie | |
| CN111891151A (en) | Electric transmission bogie for track engineering vehicle and track engineering vehicle | |
| CN114084185A (en) | Bogie with safety stop and railway vehicle | |
| CN114162148A (en) | Compact drive device, bogie and rail vehicle | |
| CN114084186A (en) | Bogie and rail vehicle | |
| CN212709371U (en) | Bogie and rail engineering vehicle | |
| CN205930746U (en) | Steering frame | |
| CN217623574U (en) | Electrically-driven bogie and railway engineering vehicle | |
| CN210852443U (en) | Powered railway vehicle bogie and railway vehicle | |
| CN201842102U (en) | Power bogie with independent wheels for 100% low-floor light rail vehicle | |
| CN213109319U (en) | Electric transmission bogie for track engineering vehicle and track engineering vehicle | |
| CN110816386A (en) | Bridge inspection vehicle bogie with anti-instability function | |
| CN205930742U (en) | Steering frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |