CN109204346B - Lower hinge device for railway vehicle and railway vehicle with lower hinge device - Google Patents
Lower hinge device for railway vehicle and railway vehicle with lower hinge device Download PDFInfo
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- CN109204346B CN109204346B CN201710525295.8A CN201710525295A CN109204346B CN 109204346 B CN109204346 B CN 109204346B CN 201710525295 A CN201710525295 A CN 201710525295A CN 109204346 B CN109204346 B CN 109204346B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
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Abstract
The invention discloses a lower hinge device for a railway vehicle and the railway vehicle with the same, wherein the lower hinge device comprises: a fixed seat; the bearing seat extends into the fixed seat; the matching bearing is matched with the bearing seat so as to be arranged in the bearing seat; the middle shaft comprises two hollow connecting bodies, the two connecting bodies are arranged in the axial direction of the matched bearing, through holes are formed in the end faces, facing each other, of the two connecting bodies, assembling holes are formed in the end faces, far away from each other, of the two connecting bodies, and each connecting body is matched with the matched bearing and the fixed seat respectively; and the fastening assembly passes through the two through holes respectively and is matched with the two connectors to position the two connectors on the fixed seat. The lower hinge device can reduce the mass of the intermediate shaft, is beneficial to the integral lightweight of the lower hinge device, can reduce the manufacturing cost, and is convenient to disassemble, inspect, replace and maintain.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a lower hinge device for a rail vehicle and the rail vehicle with the lower hinge device.
Background
The lower hinge device in the related art has large mass, is not beneficial to the light weight of the whole device, and has high manufacturing cost and inconvenient disassembly, inspection, replacement and maintenance.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the lower hinge device for the railway vehicle can reduce the mass of the intermediate shaft, is beneficial to the integral light weight of the lower hinge device, can reduce the manufacturing cost, and is convenient to disassemble, inspect, replace and maintain.
The invention also provides a railway vehicle which comprises the lower hinge device.
According to an embodiment of the present invention, a lower hinge device for a railway vehicle, the railway vehicle including a plurality of vehicle bodies, the lower hinge device includes: the fixed seat is connected with one of the two adjacent vehicle bodies; the bearing seat is connected with the other one of the two adjacent vehicle bodies and extends into the fixed seat; a mating bearing that mates with the bearing housing to be disposed within the bearing housing; the middle shaft comprises two hollow connecting bodies, the two connecting bodies are arranged in the axial direction of the matching bearing, through holes are formed in the end faces, facing each other, of the two connecting bodies, assembling holes are formed in the end faces, far away from each other, of the two connecting bodies, and each connecting body is matched with the matching bearing and the fixed seat respectively; and the fastening assemblies respectively penetrate through the two through holes and are matched with the two connecting bodies so as to position the two connecting bodies on the fixed seat.
According to the lower hinge device provided by the embodiment of the invention, the intermediate shaft comprises the two hollow connecting bodies, the specific structure of the two connecting bodies and the matching mode between the two connecting bodies are arranged, and the connecting bodies are respectively matched with the matching bearings and the fixing seats, so that the quality of the intermediate shaft can be reduced, the overall light weight of the lower hinge device is facilitated, the manufacturing cost can be reduced, and the lower hinge device is convenient to disassemble, inspect, replace and maintain.
According to some embodiments of the invention, the opposite end surfaces of the fixing base are provided with matching grooves, and the two connecting bodies are respectively provided with first convex strips extending into the matching grooves. Thereby make every connector simple with the cooperation mode of fixing base, make the jackshaft fix a position on the fixing base firmly simultaneously, can improve articulated mounting's stability and reliability down.
Specifically, the mating bearing includes: the bearing inner ring is sleeved on the intermediate shaft; the bearing outer ring is in contact fit with the bearing seat, the bearing inner ring is sleeved outside the bearing outer ring, and the bearing inner ring can freely rotate relative to the bearing outer ring; the wear-resistant layer is positioned between the bearing inner ring and the bearing outer ring and attached to the inner wall of the bearing outer ring; and each sealing ring is sleeved on the bearing outer ring and fixed on the bearing inner ring. Therefore, the service life of the matched bearing is prolonged, the reliability of the lower hinge device is ensured, and the lower hinge device is more convenient to disassemble, inspect, replace and maintain.
Specifically, the bearing housing includes: the base is provided with a plurality of first fixing holes; the first protruding portion is arranged on the base, a mounting hole for mounting the matching bearing is formed in the first protruding portion, an annular second protruding strip is arranged on the inner wall of the mounting hole, a clamping groove arranged around the mounting hole is formed in one side end face of the first protruding portion, the clamping groove is communicated with the mounting hole, and the matching bearing is located between the second protruding strip and the clamping groove; and the elastic check ring is in interference fit with the clamping groove, and part of the elastic check ring abuts against the end face of the matched bearing. Thereby can pass a plurality of first fixed orificess with fastening components in order to base and automobile body fixed connection, and then make bearing frame and automobile body coupling firm, the connected mode is simple, the installation and the dismantlement of being convenient for simultaneously. In addition, the matched bearing is stably arranged in the bearing seat, the matched bearing is prevented from being separated from the bearing seat to a certain extent, and the reliability of the lower hinging device is improved.
Specifically, the fixing base includes: the substrate is provided with a plurality of second fixing holes; the two second protruding parts are arranged on the base plate at intervals, the bearing seat extends into the space between the two second protruding parts, and each second protruding part is provided with a shaft hole used for being matched with the intermediate shaft. Thereby can pass a plurality of second fixed orificess with fastening assembly in order to with base plate and automobile body fixed connection, and then make fixing base and automobile body coupling firm, the connected mode is simple, the installation and the dismantlement of being convenient for simultaneously. Meanwhile, each connecting body penetrates through the shaft hole to be matched with the fixed seat, and the matching mode is simple.
According to some embodiments of the invention, each of the connection bodies includes a first connection section and a second connection section, the first connection section has a diameter smaller than that of the second connection section, the first connection section is engaged with an inner wall of the engagement bearing, and the second connection section is engaged with the fixing base. And the relative position of the matching bearing and each connecting body can be ensured, and the reliability of the lower hinging device is improved.
Optionally, the mating bearing is a self-lubricating radial spherical plain bearing. Therefore, the relatively rotatable range of the fixed seat and the bearing seat is larger, the flexibility of matching the bearing is improved, and the application range of the lower hinge device is improved.
Further, one end of each of the connection bodies is opened to define the fitting hole. Therefore, the mass of the intermediate shaft can be further reduced, the whole lower hinge device is lighter, and the manufacturing cost of the lower hinge device is reduced.
Specifically, the fastening assembly includes a bolt and a nut. Therefore, the fastening assembly is simple in structure, low in cost and stable in performance, so that the manufacturing cost of the lower hinge device is reduced, and the reliability of the lower hinge device is improved.
A rail vehicle according to an embodiment of the invention comprises a vehicle body and a lower hinge assembly according to the above-described embodiment of the invention.
According to the railway vehicle provided by the embodiment of the invention, the lower hinge device is arranged, so that the mass of the intermediate shaft can be reduced, the overall light weight of the lower hinge device is facilitated, the manufacturing cost is reduced, and the lower hinge device is convenient to disassemble, inspect, replace and maintain. Meanwhile, most longitudinal force and transverse force can be transmitted, so that the rail vehicle can run safely and reliably, and the requirements of large load, small radius of a walking route curve, large gradient and the like are met.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a lower hinge assembly according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of a connector according to an embodiment of the invention;
FIG. 4 is a schematic view of a bearing housing according to an embodiment of the invention;
fig. 5 is a schematic view of a fixing base according to an embodiment of the present invention.
Reference numerals:
a lower hinge device 100;
a fixed seat 1; a substrate 11; a second fixing hole 111; a second boss portion 12; a fitting groove 121; a shaft hole 122;
a bearing seat 2; a base 21; a first fixing hole 211; the first boss 22; a mounting hole 221; a second rib 222;
a card slot 223;
a mating bearing 3; the bearing inner race 31; a bearing outer race 32; a wear-resistant layer 33; a seal ring 34;
an intermediate shaft 4; a connecting body 41; a fitting hole 411; a through-hole 412; a first rib 413; straight line segments 413 a;
a fastening assembly 5; a bolt 51; a nut 52;
and a fastener 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "bottom," "inner," "outer," "axial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A lower hinge device 100 for a railway vehicle (not shown) including a plurality of vehicle bodies (not shown) according to an embodiment of the present invention will be described with reference to fig. 1 to 5.
As shown in fig. 1 to 5, a lower hinge device 100 according to an embodiment of the present invention includes: fixing base 1, bearing frame 2, cooperation bearing 3, jackshaft 4 and fastening components 5.
Fixing base 1 links to each other with one in two adjacent automobile bodies, and bearing frame 2 links to each other with another in two adjacent automobile bodies, and in bearing frame 2 stretched into fixing base 1, cooperation bearing 3 cooperated in order to establish in bearing frame 2 with bearing frame 2.
The intermediate shaft 4 includes two hollow connectors 41, and two connectors 41 arrange the setting on the axial direction of cooperation bearing 3, all are equipped with through hole 412 on the terminal surface each other of orientation of two connectors 41 and are equipped with pilot hole 411 on keeping away from terminal surface each other, and every connector 41 cooperates with cooperation bearing 3 and fixing base 1 respectively. Therefore, the intermediate shaft 4 penetrates through the matching bearing 3 to be matched with the fixed seat 1, so that the fixed seat 1 and the bearing seat 2 can be connected, and the connection between two adjacent vehicle bodies can be realized. Meanwhile, the two hollow connecting bodies 41 are structurally arranged, so that the mass of the intermediate shaft 4 can be reduced, and the overall light weight of the lower hinge device 100 is facilitated. While the manufacturing cost of the lower hinge device 100 can be reduced.
The fastening components 5 respectively pass through the two through holes 412 and cooperate with the two connecting bodies 41 to position the two connecting bodies 41 on the fixing base 1. Therefore, the fastening assembly 5 extends into each connecting body 41 through the assembling hole 411 on each connecting body 41, and then the fastening assembly 5 passes through the two through holes 412 to fixedly fit the two connecting bodies 41, so that the fastening connection between the two connecting bodies 41 is simple and reliable, and the lower hinge device 100 is convenient to disassemble, inspect, replace and maintain. Meanwhile, under the action of the fastening assembly 5, the two connecting bodies 41 can be positioned on the fixed seat 1 to limit the movement of the intermediate shaft 4 relative to the fixed seat 1, so that the lower hinge device 100 can rigidly connect two adjacent vehicle bodies, and the two vehicle bodies can rotate relatively within a certain range under the action of the lower hinge device 100.
The lower hinge device 100 of the embodiment of the invention can transmit most of longitudinal force and transverse force when a railway vehicle runs, so that the railway vehicle runs safely and reliably, and the requirements of large load, small radius of a curve of a running route, large gradient and the like of the railway vehicle are met.
According to the lower hinge device 100 of the embodiment of the invention, the intermediate shaft 4 comprises the two hollow connecting bodies 41, the specific structures of the two connecting bodies 41 are arranged and the matching modes between the two connecting bodies 41 are arranged, and the connecting bodies 41 are respectively matched with the matching bearing 3 and the fixed seat 1, so that the mass of the intermediate shaft 4 can be reduced, the integral light weight of the lower hinge device 100 is facilitated, the manufacturing cost can be reduced, and the lower hinge device 100 can be conveniently disassembled, inspected, replaced and maintained.
As shown in fig. 2, 3 and 5, according to some embodiments of the present invention, the opposite end surfaces of the fixing base 1 are provided with the fitting grooves 121, and the two connection bodies 41 are respectively provided with the first protrusions 413 protruding into the fitting grooves 121. Thereby, the matching manner of each connecting body 41 and the fixed seat 1 is simple, and simultaneously, the intermediate shaft 4 is stably positioned on the fixed seat 1, so that the stability and reliability of the lower hinge device 100 can be improved.
Specifically, as shown in fig. 2 and 3, the outer peripheral wall of the first protrusion 413 includes a straight section 413a and an arc-shaped section 413b, and the first protrusion 413 is engaged with the engagement groove 121 to position the first protrusion 413 within the engagement groove 121. Thereby can avoid jackshaft 4 to take place to rotate relative fixing base 1, further guarantee that jackshaft 4 can fix a position on fixing base 1 firmly, further improve articulated mounting 100's stability and reliability down.
As shown in fig. 2, according to some embodiments of the present invention, the mating bearing 3 includes: the bearing comprises a bearing inner ring 31, a bearing outer ring 32, a wear-resistant layer 33 and a plurality of sealing rings 34.
Specifically, a bearing inner ring 31 is sleeved on the intermediate shaft 4, a bearing outer ring 32 is in contact fit with the bearing seat 2, the bearing outer ring 32 is sleeved on the bearing inner ring 31, and the bearing inner ring 31 can freely rotate relative to the bearing outer ring 32. The wear layer 33 is located between the bearing inner race 31 and the bearing outer race 32 and attached to the inner wall of the bearing outer race 32. Therefore, the fixed seat 1 and the bearing seat 2 can rotate relatively within a certain range, namely, two adjacent vehicle bodies can rotate relatively within a certain range, and the reliability of the lower hinge device 100 is ensured. Meanwhile, the arrangement of the wear-resistant layer 33 can improve the wear resistance of the matching bearing 3, and the service life of the matching bearing 3 is prolonged to a certain extent.
Each seal ring 34 is fitted over the bearing outer race 32 and fixed to the bearing inner race 31. Thereby can avoid impurity such as dust, piece to get into cooperation bearing 3 in, prevent that the lubricating oil in the cooperation bearing 3 from flowing, make the leakproofness and the dirt resistance of cooperation bearing 3 good, non-maintaining improves lubricated effect. Meanwhile, the normal rotation of the matching bearing 3 can be ensured, the flexibility of the matching bearing 3 is improved, and the service life of the matching bearing 3 can be prolonged. The lower hinge device 100 generates little noise when the railway vehicle is running.
The matching bearing 3 of the lower hinge device 100 of the embodiment of the invention can avoid the lower hinge device 100 from being provided with the sealing ring 34 independently, thereby facilitating the disassembly, the replacement and the maintenance of the lower hinge device 100.
As shown in fig. 1, 2 and 4, according to some embodiments of the invention, the bearing housing 2 comprises a base 21, a first boss 22 and a circlip (not shown).
The base 21 is provided with a plurality of first fixing holes 211. Thereby can pass a plurality of first fixed orificess 211 with fastener 6 in order to with base 21 and automobile body fixed connection, and then make bearing frame 2 and automobile body coupling firm, the connected mode is simple, the installation and the dismantlement of being convenient for simultaneously. It can be understood that the number of the first fixing holes 211 can be set according to actual requirements, as long as it is ensured that the bearing seat 2 and the vehicle body can be fixedly connected and stably connected.
First bellying 22 is established on base 21 and is equipped with the mounting hole 221 that is used for installing cooperation bearing 3 in first bellying 22, is equipped with annular second sand grip 222 on the inner wall of mounting hole 221, is equipped with the draw-in groove 223 that sets up around mounting hole 221 on the terminal surface of one side of first bellying 22, and draw-in groove 223 and mounting hole 221 communicate, and cooperation bearing 3 is located between second sand grip 222 and the draw-in groove 223. The elastic retainer ring is in interference fit with the clamping groove 223, and a part of the elastic retainer ring is stopped against the end face of the matching bearing 3. Thereby can guarantee that cooperation bearing 3 establishes firmly in bearing frame 2, avoid cooperation bearing 3 and bearing frame 2 to break away from the cooperation to a certain extent, and then improved articulated mounting 100's reliability down.
As shown in fig. 1, 2 and 5, according to some embodiments of the present invention, the fixing base 1 includes a base plate 11 and two second protrusions 12.
The substrate 11 is provided with a plurality of second fixing holes 111. Thereby can pass a plurality of second fixed orificess 111 with fastener 6 in order to with base plate 11 and automobile body fixed connection, and then make fixing base 1 and automobile body connected firm, the connected mode is simple, the installation and the dismantlement of being convenient for simultaneously. It can be understood that the number of the second fixing holes 111 can be set according to actual requirements, as long as the fixing base 1 and the vehicle body can be fixedly connected and stably connected.
Two second protruding parts 12 are arranged on the base plate 11 at intervals, and the bearing seat 2 extends into between the two second protruding parts 12. Thereby defining a rotation slot between the two second bosses 12, and causing the bearing housing 2 to rotate in the rotation slot.
Each second boss 12 is provided with a shaft hole 122 for engaging with the intermediate shaft 4. Therefore, each connecting body 41 passes through the shaft hole 122 to be matched with the fixed seat 1, and the matching mode is simple.
As shown in fig. 2 and 3, according to some embodiments of the present invention, each of the connection bodies 41 includes a first connection section 414 and a second connection section 415, the diameter of the first connection section 414 is smaller than that of the second connection section 415, the first connection section 414 is engaged with the inner wall of the mating bearing 3, and the second connection section 415 is engaged with the fixing base 1. So that the relative position of the fitting bearing 3 to each connecting body 41 can be secured, and the reliability of the lower hinge device 100 can be improved.
Optionally, the junction of the first connection section 414 and the second connection section 415 is provided with a chamfer. Thereby facilitating the fitting of the fitting bearing 3 with each connecting body 41 and improving the strength of the connecting body 41 to some extent. Preferably, the chamfer is 0.5 °. Thereby making the structure of the connection body 41 simple and convenient to process.
Optionally, the mating bearing 3 is a self-lubricating radial spherical plain bearing. Therefore, the relatively rotatable range of the fixed seat 1 and the bearing seat 2 is larger, the flexibility of matching the bearing 3 is improved, and the application range of the lower hinge device 100 is enlarged.
Further, one end of each connection body 41 is opened to define a fitting hole 411. Therefore, the mass of the intermediate shaft 4 can be further reduced, the entire lower hinge device 100 can be made lighter, and the manufacturing cost of the lower hinge device 100 can be reduced.
Specifically, the fastening assembly 5 includes a bolt 51 and a nut 52. Therefore, the fastening assembly 5 has a simple structure, low cost and stable performance, thereby being beneficial to reducing the manufacturing cost of the lower hinge device 100 and improving the reliability of the lower hinge device 100.
Alternatively, the two connecting bodies 41 are provided at intervals in the axial direction of the mating bearing 3. Thereby, the mass of the intermediate shaft 4 can be further reduced, and the lower hinge device 100 as a whole can be made more lightweight.
The railway vehicle according to the embodiment of the present invention includes a vehicle body and the lower hinge device 100 according to the above-described embodiment of the present invention.
According to the railway vehicle provided by the embodiment of the invention, the lower hinge device 100 provided by the embodiment of the invention can reduce the mass of the intermediate shaft 4, is beneficial to the overall light weight of the lower hinge device 100, reduces the manufacturing cost, and is convenient for the disassembly, the inspection, the replacement and the maintenance of the lower hinge device 100. Meanwhile, most longitudinal force and transverse force can be transmitted, so that the rail vehicle can run safely and reliably, and the requirements of large load, small radius of a walking route curve, large gradient and the like are met.
The structure of a lower hinge device 100 for a railway vehicle according to one embodiment of the present invention will be described in detail with reference to fig. 1 to 5, wherein the railway vehicle includes a plurality of vehicle bodies. However, it should be noted that the following description is only exemplary, and it is obvious that a person skilled in the art after reading the following technical solutions of the present invention can combine, replace, modify the technical solutions or some technical features thereof, and this also falls into the protection scope of the present invention.
As shown in fig. 1 to 5, the lower hinge device 100 includes: fixing base 1, bearing frame 2, cooperation bearing 3, jackshaft 4 and fastening components 5.
Specifically, the fixing base 1 is connected to one of two adjacent vehicle bodies, and the fixing base 1 includes a base plate 11 and two second protrusions 12. Eight second fixing holes 111 are formed in the base plate 11, and the fasteners 6 are inserted through the eight second fixing holes 111 to fixedly connect the base plate 11 with the vehicle body. Two second protruding parts 12 are arranged on the base plate 11 at intervals, and the bearing seat 2 extends into between the two second protruding parts 12. Each second boss 12 is provided with a shaft hole 122 for engaging with the intermediate shaft 4.
The bearing housing 2 is connected to the other of the two adjacent vehicle bodies, and the bearing housing 2 includes a base 21, a first boss 22, and a circlip. Eight first fixing holes 211 are formed in the base 21, and the fasteners 6 are inserted through the eight first fixing holes 211 to fixedly connect the base 21 with the vehicle body. First bellying 22 is established on base 21 and is equipped with the mounting hole 221 that is used for installing cooperation bearing 3 in first bellying 22, is equipped with annular second sand grip 222 on the inner wall of mounting hole 221, is equipped with the draw-in groove 223 that sets up around mounting hole 221 on the terminal surface of one side of first bellying 22, and draw-in groove 223 and mounting hole 221 communicate, and cooperation bearing 3 is located between second sand grip 222 and the draw-in groove 223. The elastic retainer ring is in interference fit with the clamping groove 223, and a part of the elastic retainer ring is stopped against the end face of the matching bearing 3.
The intermediate shaft 4 includes two hollow connectors 41, and two connectors 41 are arranged at intervals in the axial direction of the fitting bearing 3, and the facing end faces of two connectors 41 are all provided with a through hole 412 and are far away from the end faces of each other and open to define an assembly hole 411, and each connector 41 is respectively fitted with the fitting bearing 3 and the fixing base 1.
Each connecting body 41 comprises a first connecting section 414 and a second connecting section 415, the diameter of the first connecting section 414 is smaller than that of the second connecting section 415, the first connecting section 414 is matched with the inner wall of the matching bearing 3, and the second connecting section 415 is matched with the fixed seat 1. The junction of the first connection section 414 and the second connection section 415 is provided with a chamfer angle, and the chamfer angle is 0.5 degrees.
Be equipped with cooperation recess 121 on the opposite terminal surface of fixing base 1, be equipped with first sand grip 413 on two connectors 41 respectively, the periphery wall of first sand grip 413 includes straightway 413a and segmental arc 413b, and first sand grip 413 is fixed a position in order to stretch into cooperation recess 121 with the cooperation of cooperation recess 121.
The fastening assembly 5 comprises a bolt 51 and a nut 52, and the fastening assembly 5 respectively passes through the two through holes 412 and is matched with the two connecting bodies 41 to position the two connecting bodies 41 on the fixed seat 1. That is, the bolt 51 is inserted into each connecting body 41 through the fitting hole 411 of each connecting body 41, and then the nut 52 is engaged with the portion of the bolt 51 located in the connecting body 41 to fix the two connecting bodies 41 to the fixing base 1.
Other constructions and operations of the lower hinge assembly 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A lower hinge assembly for a railway vehicle, the railway vehicle including a plurality of vehicle bodies, the lower hinge assembly comprising:
the fixed seat is connected with one of the two adjacent vehicle bodies;
the bearing seat is connected with the other one of the two adjacent vehicle bodies and extends into the fixed seat;
a mating bearing that mates with the bearing housing to be disposed within the bearing housing;
the middle shaft comprises two hollow connecting bodies, the two connecting bodies are arranged in the axial direction of the matching bearing, through holes are formed in the end faces, facing each other, of the two connecting bodies, assembling holes are formed in the end faces, far away from each other, of the two connecting bodies, and each connecting body is matched with the matching bearing and the fixed seat respectively;
and the fastening assemblies respectively penetrate through the two through holes and are matched with the two connecting bodies so as to position the two connecting bodies on the fixed seat, and each fastening assembly comprises a bolt and a nut.
2. The lower hinge assembly for railway vehicles as claimed in claim 1, wherein the fixing base has engaging grooves formed on opposite end surfaces thereof, and the two connection bodies are respectively provided with first ribs extending into the engaging grooves.
3. The lower hinge assembly for a railway vehicle as claimed in claim 1, wherein the mating bearing comprises:
the bearing inner ring is sleeved on the intermediate shaft;
the bearing outer ring is in contact fit with the bearing seat, the bearing inner ring is sleeved outside the bearing outer ring, and the bearing inner ring can freely rotate relative to the bearing outer ring;
the wear-resistant layer is positioned between the bearing inner ring and the bearing outer ring and attached to the inner wall of the bearing outer ring;
and each sealing ring is sleeved on the bearing outer ring and fixed on the bearing inner ring.
4. The lower hinge assembly for railway vehicles as claimed in claim 1, wherein the bearing housing comprises:
the base is provided with a plurality of first fixing holes;
the first protruding portion is arranged on the base, a mounting hole for mounting the matching bearing is formed in the first protruding portion, an annular second protruding strip is arranged on the inner wall of the mounting hole, a clamping groove arranged around the mounting hole is formed in one side end face of the first protruding portion, the clamping groove is communicated with the mounting hole, and the matching bearing is located between the second protruding strip and the clamping groove;
and the elastic check ring is in interference fit with the clamping groove, and part of the elastic check ring abuts against the end face of the matched bearing.
5. The lower hinge assembly for railway vehicles as claimed in claim 1, wherein the fixing base comprises:
the substrate is provided with a plurality of second fixing holes;
the two second protruding parts are arranged on the base plate at intervals, the bearing seat extends into the space between the two second protruding parts, and each second protruding part is provided with a shaft hole used for being matched with the intermediate shaft.
6. The lower hinge assembly for a railway vehicle as claimed in claim 1, wherein each of the connection bodies comprises a first connection section and a second connection section, the first connection section having a diameter smaller than that of the second connection section, the first connection section being engaged with an inner wall of the engagement bearing, and the second connection section being engaged with the fixing base.
7. The lower hinge assembly for railway vehicles as claimed in claim 1, wherein the mating bearing is a self-lubricating radial spherical plain bearing.
8. The lower hinge assembly for a railway vehicle as claimed in claim 1, wherein one end of each of the connection bodies is opened to define the fitting hole.
9. A rail vehicle, characterized in that it comprises a vehicle body and a lower articulation according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525295.8A CN109204346B (en) | 2017-06-30 | 2017-06-30 | Lower hinge device for railway vehicle and railway vehicle with lower hinge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525295.8A CN109204346B (en) | 2017-06-30 | 2017-06-30 | Lower hinge device for railway vehicle and railway vehicle with lower hinge device |
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| Publication Number | Publication Date |
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| CN109204346A CN109204346A (en) | 2019-01-15 |
| CN109204346B true CN109204346B (en) | 2020-11-20 |
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| CN201710525295.8A Active CN109204346B (en) | 2017-06-30 | 2017-06-30 | Lower hinge device for railway vehicle and railway vehicle with lower hinge device |
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|---|---|---|---|---|
| RU2049274C1 (en) * | 1992-06-29 | 1995-11-27 | Алексей Андреевич Бутаков | Pivot |
| CN201009892Y (en) * | 2006-12-06 | 2008-01-23 | 湘潭电机股份有限公司 | Lower hinge device in low floor light railway vehicle hinge |
| CN201442584U (en) * | 2009-06-30 | 2010-04-28 | 中国北车集团大连机车研究所有限公司 | Elastic hinging device for hinging urban low-floor railway vehicles |
| CN101956757A (en) * | 2009-07-15 | 2011-01-26 | 鸿富锦精密工业（深圳）有限公司 | Hinging device |
| CN204801815U (en) * | 2015-07-27 | 2015-11-25 | 株洲九方制动设备有限公司 | Articulated mounting under rail vehicle |
| CN204801812U (en) * | 2015-07-27 | 2015-11-25 | 株洲九方制动设备有限公司 | Last articulated mounting of rail vehicle |
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| CN109204346A (en) | 2019-01-15 |
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