CN111559405B - Axle box positioning device and bogie - Google Patents
Axle box positioning device and bogie Download PDFInfo
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- CN111559405B CN111559405B CN202010367750.8A CN202010367750A CN111559405B CN 111559405 B CN111559405 B CN 111559405B CN 202010367750 A CN202010367750 A CN 202010367750A CN 111559405 B CN111559405 B CN 111559405B
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- torsion bar
- bar spring
- bearing
- positioning device
- axlebox
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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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
- B61F5/304—Torsion-bar springs
Abstract
The invention belongs to the technical field of railway wagons, and particularly relates to a shaft box positioning device and a bogie. The axle box positioning device comprises a rotating arm and a torsion bar spring, one end of the rotating arm is fixedly connected to the axle box, the other end of the rotating arm is connected with a framework through the torsion bar spring, the torsion bar spring is provided with a first end and a second end which are opposite, the first end of the torsion bar spring is rotatably connected to the framework, the other end of the rotating arm is fixedly connected with the middle of the torsion bar spring, and the second end of the torsion bar spring is fixedly arranged relative to the framework. The invention can make the torsion bar spring generate larger angular deformation and torque, so that the vehicle has larger vehicle static deflection, simultaneously, the spring deflection difference of the railway wagon in an empty state and a full load state is smaller, the included angle of the upper supporting surface and the lower supporting surface is also smaller, the service life of the torsion bar spring is prolonged, and the invention has good practical value.
Description
Technical Field
The invention belongs to the technical field of railway wagons, and particularly relates to a shaft box positioning device and a bogie.
Background
With the improvement of the market demand of rapid freight transportation, the requirement on the running speed of railway freight transportation equipment is higher and higher, and the axle box positioning mode of the bogie is usually a rotating arm type so as to meet the requirement on high-speed running of vehicles.
In carrying out the present invention, the applicant has found that at least the following disadvantages exist in the prior art:
the structural form of the positioning of the rotating arm type axle box is only suitable for the condition that the included angle between the upper supporting plane and the lower supporting plane is small, the static deflection of a large vehicle cannot be set due to the limitation of the structure, and meanwhile, the included angle between the upper supporting plane and the lower supporting plane is large due to the large difference of the deflection of the spring under the empty state and the full load state of the railway freight car, so that the fault is easily caused by the uneven loading of the spring for a long time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an axle box positioning device and a bogie, and aims to solve the technical problems that the structural form of the positioning of the jib type axle box in the prior art is only suitable for the condition that the included angle between the upper support plane and the lower support plane is small, and the spring is not uniformly loaded for a long time to cause a fault.
The technical scheme of the invention is as follows:
in one aspect, the present invention provides an axle box positioning device, suitable for mounting an axle box on a bogie, the positioning device comprising a rotating arm and a torsion bar spring, wherein:
one end of the rotating arm is fixedly connected to the axle box, the other end of the rotating arm is connected with the framework through a torsion bar spring, the torsion bar spring is provided with a first end and a second end which are opposite to each other, the first end of the torsion bar spring is rotatably connected to the framework, the other end of the rotating arm is fixedly connected with the middle of the torsion bar spring, and the second end of the torsion bar spring is fixedly arranged opposite to the framework.
Furthermore, two opposite first mounting holes are formed in the framework, a first bearing and a second bearing are respectively arranged in the two first mounting holes, the first end of the torsion bar spring is rotatably connected in the first bearing, and the middle part of the torsion bar spring rotatably penetrates through the second bearing.
Further, the other end of the rotating arm is disposed between the first bearing and the second bearing, the other end of the rotating arm is disposed with a second mounting hole, and the middle portion of the torsion bar spring is fixedly disposed in the second mounting hole.
Furthermore, the device further comprises a positioning sleeve, the positioning sleeve is arranged in the second mounting hole in an interference fit mode, the middle of the torsion bar spring is arranged in an inner hole of the positioning sleeve, and the middle of the torsion bar spring and the inner hole of the positioning sleeve are fixedly connected through a first locking key.
Furthermore, the locating sleeve comprises an outer steel ring, a rubber layer and an inner steel ring which are sequentially arranged from outside to inside along the axial direction, wherein the outer diameters of an inner hole of the outer steel ring and the inner steel ring are both irregular.
Furthermore, a retainer ring is arranged at the first end of the torsion bar spring and is fixedly arranged at the inner side of the axial outer end of the first bearing;
the framework is fixedly provided with an annular pressure plate, and the annular pressure plate is fixedly arranged on the outer side of the axial outer end of the first bearing;
a first spacer bush is arranged between the positioning sleeve and the first bearing, a second spacer bush is arranged between the positioning sleeve and the second bearing, and the torsion bar spring is movably arranged in the first spacer bush and the second spacer bush;
a first lock nut is arranged on the rod body of the torsion bar spring close to the second end of the torsion bar spring, a third spacer bush is arranged between the first lock nut and the second bearing, and the torsion bar spring is movably arranged in the third spacer bush.
Furthermore, a plurality of buffer cavities are sequentially arranged in the torsion bar spring along the axial direction of the torsion bar spring; one of the two adjacent layers of buffer cavities is arranged from one axial end of the torsion bar spring and extends to the other axial end of the torsion bar spring to be sealed, and the other buffer cavity of the two adjacent layers of buffer cavities is arranged from the other axial end of the torsion bar spring and extends to the other axial end of the torsion bar spring to be sealed.
Furthermore, the second end of the torsion bar spring is fixedly connected with one end of a connecting rod, and the other end of the connecting rod is fixedly connected with the second end of the torsion bar spring of the other axle box positioning device on the same side with the axle box positioning device.
Furthermore, the end part of the connecting rod is fixedly sleeved on the second end of the torsion bar spring and is locked by a second locking key, a limiting sleeve and a second locking nut are arranged on the second end of the torsion bar spring at intervals, and the limiting sleeve and the second locking nut are arranged on two sides of the end part of the connecting rod.
In another aspect, the present invention provides a bogie including the axle box positioning apparatus described above.
The invention has the beneficial effects that:
when the vehicle is in an empty state, the vertical load of the vehicle moves downwards through the framework and the torsion bar spring, the axle box fixedly connected with the middle part of the torsion bar spring rotates around the center formed by the wheel shaft of the bogie under the action of the torsion bar spring, meanwhile, the outer ring of the torsion bar spring rotates and deforms relatively relative to the second end which is relatively fixed with the framework, the generated torque also increases along with the continuous increase of the angular deformation, the torque is balanced with the vertical load until the torque is balanced, the angular deformation is the empty static deflection, and the angular deformation is determined by the angular rigidity of the torsion bar spring. When the vehicle is in a "full load" condition, the side of the axlebox spring above the axlebox contacts the axlebox to provide greater vertical stiffness.
In the invention, the first end of the torsion bar spring is rotatablely connected to the framework, the other end of the rotating arm is fixedly connected with the middle part of the torsion bar spring, and the second end of the torsion bar spring is relatively fixedly arranged with the framework, so that the torsion bar spring can generate larger angular deformation and torque, and the vehicle has larger vehicle static deflection and good practical value.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a bogie according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic illustration of the pedestal positioning assembly of FIG. 1;
FIG. 4 is a schematic cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic structural view of the positioning sleeve of FIG. 4;
fig. 6 is a cross-sectional view of the torsion bar spring of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a bogie according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a top view of fig. 1, and referring to fig. 1 and fig. 2, the bogie according to the embodiment of the present invention includes two axle assemblies 1, four sets of axle box positioning devices 2, and 1 frame 3, wherein the two axle assemblies 1 are oppositely disposed on the frame 3 along a length direction of the bogie, and one set of axle box positioning device is disposed on an end portion of a central shaft of each axle assembly 1, such that two sets of axle box positioning devices 2 are disposed on a side surface of the frame 3 in the length direction.
Fig. 3 is a schematic structural view of the axlebox locating device of fig. 1, and referring to fig. 1-3, an axlebox locating device in an embodiment of the present invention, which is suitable for the mounting of axleboxes on a bogie, and comprises rotating arms 2-15 and torsion bar springs 2-5, wherein one end of the rotating arms 2-15 is fixedly connected to the axlebox 2-1, the other end of the rotating arms 2-15 is connected to a frame 3 through the torsion bar springs 2-5, the torsion bar springs 2-5 have opposite first and second ends, the first ends of the torsion bar springs 2-5 are rotatably connected to the frame 3, the other ends of the rotating arms 2-15 are fixedly connected to the middle portions of the torsion bar springs 2-5, and the second ends of the torsion bar springs 2-5 are fixedly arranged relative to.
According to the bogie provided by the embodiment of the invention, when a vehicle is in an empty state, a vertical load of the vehicle moves downwards through the framework and the torsion bar spring, the axle box fixedly connected with the middle part of the torsion bar spring rotates around the center formed by the wheel shafts of the bogie under the action of the torsion bar spring, the outer ring of the torsion bar spring rotates and deforms relatively relative to the second end, which is relatively fixed with the framework, of the outer ring of the torsion bar spring, the generated torque is increased along with the increase of the angular deformation, the generated torque is offset with the vertical load until the vertical load is balanced, the magnitude of the angular deformation is the empty static deflection, and the magnitude of the angular deformation is determined by the angular rigidity of the torsion bar spring. When the vehicle is in a "full load" condition, the side of the axlebox spring above the axlebox contacts the axlebox to provide greater vertical stiffness.
When the vehicle is in a full-load state, the torsion bar spring is still in a torsion state, the torsion angle is larger than that of the vehicle in an empty state, and the torsion spring and the axle box spring are matched with each other to adapt to the vehicle in the full-load state.
Fig. 4 is a cross-sectional view taken along line a-a of fig. 3, and referring to fig. 3 and 4, in an embodiment of the present invention, the frame 3 is provided with two opposite first mounting holes, the two first mounting holes are respectively provided with a first bearing 2-8 and a second bearing 2-16, a first end of the torsion bar spring 2-5 is rotatably connected to the first bearing 2-8, and a middle portion of the torsion bar spring 2-5 rotatably passes through the second bearing 2-16, so as to rotatably mount the first end of the torsion bar spring 2-5 on the frame 3.
Further, referring to fig. 4, in the embodiment of the present invention, the other end of the pivot arm 2-15 is disposed between the first bearing 2-8 and the second bearing 2-16, the other end of the pivot arm 2-15 is provided with a second mounting hole, and the middle portion of the torsion bar spring 2-5 is fixedly disposed in the second mounting hole 2-15, so that the fixed connection of the middle portion of the torsion bar spring 2-5 and the other end of the pivot arm 2-15 is achieved.
Specifically, referring to fig. 4, the axle box positioning device according to the embodiment of the present invention may further include a positioning sleeve 2-4, the positioning sleeve 2-4 is disposed in the second mounting hole in an interference fit manner, the middle portion of the torsion bar spring 2-5 is disposed in the inner hole of the positioning sleeve 2-4, and the middle portion of the torsion bar spring 2-5 and the inner hole of the positioning sleeve 2-4 are fixedly connected by a first locking key 2-6, so as to fixedly connect the middle portion of the torsion bar spring 2-5 and the other end of the rotating arm 2-15.
FIG. 5 is a schematic structural diagram of the positioning sleeve in FIG. 4, and referring to FIG. 4 and FIG. 5, the positioning sleeve 2-4 in the embodiment of the present invention includes an outer steel ring 2-4-1, a rubber layer 2-4-2 and an inner steel ring 2-4-3, which are sequentially arranged from outside to inside along the axial direction, wherein the outer diameters of the inner bore of the outer steel ring 2-4-1 and the inner steel ring 2-4-3 are both shaped, such that relative rotation between the outer steel ring 2-4-1 and the rubber layer 2-4-2 and between the rubber layer 2-4-2 and the inner steel ring 2-4-3 can be prevented, and the rubber layer 2-4-2 between the outer steel ring 2-4-1 and the inner steel ring 2-4-3 can provide a certain deformation resistance stiffness, the device is used for setting the longitudinal and transverse rigidity of the axle box positioning device.
Specifically, in the embodiment of the invention, two opposite ends of the inner hole of the outer steel ring 2-4-1 are first straight lines, the rest of the inner hole is arc-shaped, two opposite ends of the outer peripheral surface of the inner steel ring 2-4-3 are also second straight lines, the first straight lines and the second straight lines are correspondingly superposed and contacted, and the rubber layer 2-4-2 is filled between the outer steel ring 2-4-1 and the inner steel ring 2-4-3.
Referring to fig. 4, in order to axially position the first bearing 2-8, the first end of the torsion bar spring 2-5 according to the embodiment of the present invention is provided with a retainer ring 2-17, the retainer ring 2-17 is fixedly disposed inside the axially outer end of the first bearing 2-8, and the frame 3 is fixedly provided with an annular pressure plate 2-7, the annular pressure plate 2-7 is fixedly disposed outside the axially outer end of the first bearing 2-8, so as to prevent the first bearing 2-8 from coming out in the direction of the first end of the torsion bar spring 2-5.
In an embodiment of the invention, the first end of the torsion bar spring 2-5 may be formed integrally with the retainer ring 2-17, and the annular pressure plate 2-7 may be fixedly connected to the frame 3 by means of bolts.
Referring to fig. 4, in the embodiment of the present invention, a first spacer 2-9 is disposed between the positioning sleeve 2-4 and the first bearing 2-8, and the torsion bar spring 2-5 is movably disposed in the first spacer 2-9 to prevent the first bearing 2-8 from coming out in the direction of the second end of the torsion bar spring 2-5.
Similarly, referring to FIG. 4, in order to axially position the first bearing 2-16, in the embodiment of the present invention, a second spacer 2-18 is disposed between the spacer 2-4 and the second bearing 2-16, the torsion bar spring 2-5 is movably disposed in the second spacer 2-18, a first lock nut 2-10 is disposed on a shaft of the torsion bar spring 2-5 near the second end thereof, a third spacer 2-14 is disposed between the first lock nut 2-10 and the second bearing 2-16, the torsion bar spring 2-5 is movably disposed in the third spacer 2-14, and the first bearing 2-16 is prevented from axially moving out along the second spacer 2-18 and the third spacer 2-14 during use.
Fig. 6 is a cross-sectional view of the torsion bar spring in fig. 4, and in combination with fig. 6, a plurality of buffer cavities are sequentially arranged in the interior of the torsion bar spring 2-5 along the axial direction of the torsion bar spring, the buffer cavities can be surrounded by steel rings, and the angular stiffness of the torsion bar spring 2-5 can be controlled by adjusting the thickness and the length of the steel rings.
Further, referring to fig. 6, in the embodiment of the present invention, one buffer cavity of two adjacent buffer cavities is opened from one axial end of the torsion bar spring 2-5 and closed by extending to the other axial end of the torsion bar spring 2-5, and the other buffer cavity of two adjacent buffer cavities is opened from the other axial end of the torsion bar spring 2-5 and closed by extending to one axial end of the torsion bar spring 2-5, so as to form a labyrinth structure. This arrangement allows the torsion bar spring to have better angular deformability, so as to generate larger torque, thereby allowing the vehicle to have larger vehicle static deflection.
Of course, the damping chamber inside the torsion bar spring 2-5 may also be in other forms of labyrinth structures, such as a curved damping chamber, and the embodiment of the present invention is not limited thereto.
Referring to fig. 1-4, the second end of the torsion bar spring 2-5 of the embodiment of the present invention is fixedly connected to one end of the connecting rod 2-11, and the other end of the connecting rod 2-11 is fixedly connected to the second end of the torsion bar spring 2-5 of another axlebox positioner on the same side as the axlebox positioner, so that the second ends of the torsion bar springs 2-5 of the two axlebox positioners on the same side can be fixed by one connecting rod 2-11, and the structure is simplified and has good practicability.
Specifically, referring to fig. 4, the end of the connecting rod 2-11 in the embodiment of the present invention may be fixedly sleeved on the second end of the torsion bar spring 2-5, and the two are locked by the second locking key 2-13, the second end of the torsion bar spring 2-5 is provided with the position limiting sleeve 2-19 and the second locking nut 2-12 at intervals, and the position limiting sleeve 2-19 and the second locking nut 2-12 are disposed on both sides of the end of the connecting rod 2-11 to axially limit the connecting rod, so as to improve the reliability of the connection between the connecting rod 2-11 and the second end of the torsion bar spring 2-5.
Of course, the second end of the torsion bar spring 2-5 in the embodiment of the present invention may also be directly and fixedly connected to the frame 3 through other structures, and the position limiting sleeve 2-19 may be integrally formed with the torsion bar spring 2-5, which is not limited in this embodiment of the present invention.
In addition, the axle box positioning device 2 of the embodiment of the invention further comprises a vertical hydraulic shock absorber 2-2 and an axle box spring 2-3, wherein the axle box spring 2-3 is fixed in an axle box hole of the framework 3 through a bolt, and the vertical hydraulic shock absorber 2-2 is arranged between the axle box 2-1 and the framework 3 to provide vertical damping. When the vehicle is in the "full load" condition, the axlebox springs 2-3 are in contact with the axlebox 2-1 to provide a greater vertical stiffness.
In the embodiment of the invention, because the first end of the torsion bar spring is rotatably connected to the framework, the other end of the rotating arm is fixedly connected with the middle part of the torsion bar spring, and the second end of the torsion bar spring is fixedly arranged relative to the framework, the torsion bar spring can generate larger angular deformation and torque, so that the vehicle has larger vehicle static deflection, in addition, compared with the traditional linearly-deformed elastic unit (represented by a cylindrical spiral spring) in the prior art, the torsion bar spring of the embodiment of the invention is an angular-deformed elastic unit, is more suitable for a rotating arm type axle box positioning structure mainly based on rotary motion, the situation that the traditional cylindrical spiral spring is easy to break due to uneven loading when the rotating arm rotates at a large angle can not occur, and the situation from a free state (the state when no vehicle body and only a bogie exist) to an empty vehicle state (the vehicle body falls on the bogie can be ignored, but no goods are loaded on the wagon), and the influence of the angle change on the elastic element when the rotating arm rotates from the empty wagon state to the full load state, the axle box spring which only acts in the full load state is arranged, so that the wagon has larger empty wagon static deflection and more reasonable full load static deflection according to the design requirement, the spring deflection difference between the empty wagon state and the full load state of the wagon is smaller, the included angle between the upper supporting surface and the lower supporting surface is smaller, the service life of the torsion bar spring is prolonged, and the torsion bar spring has good practical value.
The following embodiments are provided for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the technical features of the present invention can be modified or changed in some ways without departing from the scope of the present invention.
Claims (10)
1. An axle box positioning device suitable for mounting an axle box on a bogie, the positioning device comprising a rotating arm and a torsion bar spring, wherein:
one end of the rotating arm is fixedly connected to the axle box, the other end of the rotating arm is connected with the framework through a torsion bar spring, the torsion bar spring is provided with a first end and a second end which are opposite to each other, the first end of the torsion bar spring is rotatably connected to the framework, the other end of the rotating arm is fixedly connected with the middle of the torsion bar spring, and the second end of the torsion bar spring is fixedly arranged opposite to the framework.
2. The axlebox positioning device according to claim 1 wherein the frame defines two opposing first mounting apertures, each of the first mounting apertures defining a first bearing and a second bearing, the first end of the torsion bar spring being pivotally coupled to the first bearing, the middle portion of the torsion bar spring being pivotally received through the second bearing.
3. The axlebox positioning device according to claim 2, wherein the other end of the pivot arm is disposed between the first bearing and the second bearing, the other end of the pivot arm being provided with a second mounting hole, and a middle portion of the torsion bar spring being fixedly disposed in the second mounting hole.
4. The axlebox positioning device according to claim 3, further comprising a positioning sleeve, wherein the positioning sleeve is disposed within the second mounting hole in an interference fit, wherein the torsion bar spring is disposed within an inner bore of the positioning sleeve at a mid-portion thereof, and wherein the torsion bar spring and the positioning sleeve are fixedly coupled at the mid-portion thereof by a first locking key.
5. The axle box positioning device of claim 4, wherein the positioning sleeve comprises an outer steel ring, a rubber layer and an inner steel ring which are arranged from outside to inside in the axial direction, and wherein the outer diameters of the inner hole of the outer steel ring and the inner steel ring are both irregular.
6. An axlebox positioning device according to claim 4 wherein the first end of the torsion bar spring is provided with a collar fixedly disposed inwardly of the axially outer end of the first bearing;
the framework is fixedly provided with an annular pressure plate, and the annular pressure plate is fixedly arranged on the outer side of the axial outer end of the first bearing;
a first spacer bush is arranged between the positioning sleeve and the first bearing, a second spacer bush is arranged between the positioning sleeve and the second bearing, and the torsion bar spring is movably arranged in the first spacer bush and the second spacer bush;
a first lock nut is arranged on the rod body of the torsion bar spring close to the second end of the torsion bar spring, a third spacer bush is arranged between the first lock nut and the second bearing, and the torsion bar spring is movably arranged in the third spacer bush.
7. The axlebox positioning device according to claim 1, characterized in that the torsion bar spring is provided with a plurality of buffer chambers in sequence along its axial direction; one of the two adjacent layers of buffer cavities is arranged from one axial end of the torsion bar spring and extends to the other axial end of the torsion bar spring to be sealed, and the other buffer cavity of the two adjacent layers of buffer cavities is arranged from the other axial end of the torsion bar spring and extends to the other axial end of the torsion bar spring to be sealed.
8. An axlebox positioning device according to claim 1 wherein the second end of the torsion bar spring is fixedly attached to one end of a connecting rod, the other end of the connecting rod being fixedly attached to the second end of the torsion bar spring of another of the axlebox positioning devices on the same side as the axlebox positioning device.
9. The axlebox positioning device according to claim 8, wherein the end of the connecting rod is fixedly fitted over the second end of the torsion bar spring and locked thereto by a second locking key, and wherein a stop collar and a second locking nut are spaced apart from each other at the second end of the torsion bar spring and disposed on opposite sides of the end of the connecting rod.
10. A bogie characterised in that the bogie includes an axlebox locating apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367750.8A CN111559405B (en) | 2020-04-30 | 2020-04-30 | Axle box positioning device and bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367750.8A CN111559405B (en) | 2020-04-30 | 2020-04-30 | Axle box positioning device and bogie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111559405A CN111559405A (en) | 2020-08-21 |
| CN111559405B true CN111559405B (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010367750.8A Active CN111559405B (en) | 2020-04-30 | 2020-04-30 | Axle box positioning device and bogie |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT149976B (en) * | 1935-03-19 | 1937-06-25 | Porsche Gmbh | Chassis for rail vehicles. |
| US2553583A (en) * | 1945-09-27 | 1951-05-22 | Hickman Pneumatic Seat Co Inc | Spring suspension for railroad cars |
| CN108189856A (en) * | 2018-01-22 | 2018-06-22 | 中车长春轨道客车股份有限公司 | Quick big axis heavy load car power truck |
| CN109515465A (en) * | 2018-11-08 | 2019-03-26 | 西南交通大学 | A kind of built-in bogie of high-speed railway lorry axle box |
| CN110682932A (en) * | 2019-11-14 | 2020-01-14 | 中车山东机车车辆有限公司 | Primary suspension positioning system of railway wagon bogie |
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