CN114559976A - Flexible framework using slewing bearing for railway vehicle bogie - Google Patents
Flexible framework using slewing bearing for railway vehicle bogie Download PDFInfo
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- CN114559976A CN114559976A CN202210037917.3A CN202210037917A CN114559976A CN 114559976 A CN114559976 A CN 114559976A CN 202210037917 A CN202210037917 A CN 202210037917A CN 114559976 A CN114559976 A CN 114559976A
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- hinged beam
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- slewing bearing
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- 230000007704 transition Effects 0.000 claims description 26
- 238000012423 maintenance Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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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
- B61F5/50—Other details
- B61F5/52—Bogie frames
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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
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
- B61F5/08—Bolster supports or mountings incorporating rubber springs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a flexible framework using slewing bearings for a railway vehicle bogie, which is generally H-shaped and consists of two T-shaped beams and two sets of slewing bearings connecting the two T-shaped beams, wherein each T-shaped beam consists of a beam extending along the longitudinal direction and a cross beam extending along the transverse direction to the middle part, the two sets of slewing bearings are coaxially arranged in a way that the axes are parallel to the cross beams of the T-shaped beams, the cross beams of the two T-shaped beams are hinged and connected along the transverse shaft, the two T-shaped beams can freely perform slewing motion around the axes of the two slewing bearings through the connection of the two sets of slewing bearings, the two T-shaped beams are connected approximately rigidly in other directions, the bogie adopting the flexible framework has extremely low torsional rigidity, thereby the bogie is adapted to the unevenness of a line to the maximum extent and the stability is ensured, the cross beams of the two T-shaped beams of the framework are both of an upper side opening structure, and a central traction device between the bogie and a vehicle body can be arranged, thereby adapt to short wheel base and do benefit to drive arrangement's installation, realize the compact and lightweight design of bogie.
Description
Technical Field
The invention relates to the technical field of bogies, in particular to a flexible framework adopting a slewing bearing for a railway vehicle bogie.
Background
The existing railway bogie mainly comprises an integral framework type bogie and three large-piece bogies, the integral framework type bogie can eliminate rhombus deformation, but has poor line distortion adapting capability, needs to adapt to line distortion by depending on soft one-piece vertical deformation, has higher requirements on one-piece suspension and a track, and has stronger line distortion adapting capability, but loose structure, smaller diamond-resistant rigidity and low running speed.
The existing partially flexible monolithic frame, which can reduce the torsional rigidity between the two side beams, is mainly realized by rubber joints or thin steel plate cross beams. For a flexible framework adopting a rubber joint, the rubber joint bears larger torque, and two side beams of the flexible framework adopting the rubber joint can only rotate for a certain angle and can not realize free torsion between the two side beams; the cross beam adopts a thin steel plate to realize a flexible framework, the rotation angle between two side beams is limited, and free torsion cannot be realized. For bogies where the two side beams cannot be freely twisted, the line adaptability and curve passing ability are limited.
Disclosure of Invention
The invention mainly solves the technical problem of providing an integral framework which has no rhombus deformation, zero torsional rigidity, good curve trafficability and strong line twisting adaptability aiming at the defects of the prior art, wherein the technology is mainly realized by a hinged beam device.
In order to solve the technical problems, the invention adopts the technical scheme that: a flexible frame using a slewing bearing for a railway vehicle bogie comprises two T-shaped beams and two sets of slewing bearings connecting the two T-shaped beams, wherein: the ends of the two side beams are connected with the wheel pair through a series of suspension devices, the middle parts of the two side beams are connected with a transversely arranged hinged cross beam device, the two side beams can freely do point-head torsion to each other around a transverse shaft or a Y shaft in a vehicle dynamics generalized coordinate through the hinged cross beam device, and the rigidity in other directions is kept to be large.
Preferably, the flexible framework device consists of a left side beam, a right side beam, an outer hinged beam, an inner hinged beam, a left slewing bearing, a right slewing bearing, four middle traction rubber piles, a traction seat and a transition piece. The outer hinged beam is designed to be a cylindrical surface, a long far hole is formed in the upper portion of the outer hinged beam, so that a traction pin connecting device in the center of the vehicle body can conveniently extend down to be matched with the traction seat, meanwhile, the outer hinged beam is convenient to disassemble and assemble by workers during disassembling and assembling, and a small hole is formed in the lower portion of the outer hinged beam, so that accumulated water in the beam device can be conveniently drained in rainy and snowy weather; the inner side hinged beam is of a box body structure and is not provided with an upper cover plate, the traction seat is connected with the inner side hinged beam through four traction rubber piles, and a hole is formed in the center of a lower end plate of the inner side hinged beam so as to prevent a central traction device from moving up and down and colliding with the lower end plate of the inner side hinged beam; the left bearing and the right bearing in the hinged beam device are the same in size, a slewing bearing is adopted, the left bearing and the right bearing are arranged between the inner side hinged beam end cover and the outer side hinged beam end cover on the left side and the right side respectively, the outer ring of the slewing bearing is fixed with the outer side hinged beam end cover through screws, and the inner ring of the slewing bearing is fixed with the inner side hinged beam end cover plate through screws.
Preferably, the hinged beam device is characterized in that the hinged beam end cover on the outer side is directly and fixedly connected with the right side beam to form a T-shaped beam, the hinged beam on the inner side is connected with the left side beam through a transition piece, the T-shaped beam is also formed, one end of the transition piece is fixedly connected with the left side beam, the other end of the transition piece penetrates through the hinged beam end cover on the outer side, the pivoting support and the hinged beam end cover on the inner side in a columnar shape, the transition piece is fastened inside the hinged beam end cover on the inner side through a flange plate, and the two T-shaped beams can freely rotate around the axis through the left pivoting support and the right pivoting support.
Preferably, the two rotary supports adopt bearings with the same inner diameter and outer diameter, and are fastened with the inner and outer hinged beam end plates through screws, so that the two rotary supports are convenient to detach.
The inner side hinged beam extends into the outer side hinged beam, and the inner side hinged beam and the outer side hinged beam are connected through a slewing bearing with a certain span at the left and right, so that the flexible framework forms an integral framework without diamond deformation, and the torsional rigidity between the beams at two sides is zero, and free point-head torsional motion can be performed.
And two sides of the right side beam of the left side beam are fixedly connected with an extending beam, and a secondary spring device can be installed on the extending beam.
Compared with the prior art, the invention has the following advantages:
1. the flexible framework belongs to an H-shaped framework and is an integral stable structure, the flexible framework can bear forces in three directions and torques in two directions by virtue of the hinged cross beam device, namely, the balance of the forces in the three directions and the torques in the two directions can be carried out, only the freedom degree of transverse rotation is released, the uniform load performance of the bogie is good, the stability is high, the safety of passing a curve is high, the adaptability to line distortion is strong, and the running speed of the bogie can be increased on various lines.
2. The bogie using the flexible framework has no rhomboid deformation and zero torsional rigidity, and can simultaneously have excellent running stability and curve trafficability characteristic, thereby fundamentally solving the contradiction between the running stability and the curve trafficability characteristic of the traditional bogie.
3. By using the flexible framework, the two side beams of the flexible framework can easily generate relative torsional motion around the transverse shaft, so that the capability of the corresponding bogie for adapting to the unsmooth line is greatly enhanced, the bogie can be suspended by a non-axle box or an axle box with a simple structure, the production and maintenance cost of the bogie is reduced, and if the bogie is suspended by an axle box with better performance, the running speed of the bogie is higher, and the running stability is better.
4. The flexible framework of the invention adopts the traction rubber pile, and the arrangement of the traction pull rod is cancelled, and the traction rubber pile has the advantages of light weight and good wear resistance.
5. The flexible framework structure is innovative, the slewing bearing is adopted, the slewing angle of the slewing bearing is small, the bearing capacity is good in the axial direction and the radial direction, the economic performance is good, and the maintenance is avoided in the using process.
6. The flexible framework is suitable for the bogie with the short wheelbase, adopts a mode of traction rubber pile center traction, is more suitable for a compact power bogie, is convenient for the bogie to arrange a traction motor, and can be matched with the bogies of different projects, thereby reducing the research and development cost of the bogie.
Drawings
FIG. 1 is a schematic structural view of a flexible frame using a slewing bearing for a railway vehicle bogie in embodiment 1;
FIG. 2 is a structural plan view of a flexible frame using a slewing bearing for a railway vehicle bogie in embodiment 1;
fig. 3 is a schematic structural view of the articulated beam device in embodiment 1;
fig. 4 is a schematic structural view of an outer articulated beam and a slewing bearing in embodiment 1;
fig. 5 is a schematic structural view of an inboard articulated beam and a slewing bearing in embodiment 1;
FIG. 6 is a schematic structural view of a transition piece in embodiment 1;
fig. 7 is a schematic structural view of a slewing bearing in embodiment 1;
FIG. 8 is a schematic view of the structure of a traction rubber pile in example 1;
the labels in the figure are: 1-left side beam, 11-overhanging beam, 12-transition piece, 2-right side beam, 3-hinged beam device, 31-outer hinged beam, 312-sleeve, 313-outer hinged beam end cover, 32-inner hinged beam, 321-box, 322-flange, 33-slewing bearing, 331-outer ring, 332-roller, 333-inner ring, 34-traction rubber pile, 35-traction seat.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
As shown in fig. 1-8, the present invention provides a flexible frame using a slewing bearing for a railway vehicle bogie, comprising:
the flexible framework is an H-shaped framework and comprises a left side beam 1, a right side beam 2 and a group of transversely arranged hinged cross beam devices 3, wherein the two longitudinally arranged side beams are respectively provided with a connecting rod, the two connecting rods are connected with the flexible framework through the connecting rod, and the two connecting rods are connected with the flexible framework through the connecting rod: the two ends of the left side beam 1 and the right side beam 2 are connected with a wheel pair through a series of suspension devices, a transversely arranged hinged cross beam device 3 is connected between the left side beam 1 and the right side beam 2, and the left side beam 1 and the right side beam 2 can rotate around the center line of the hinged cross beam device 3 in a mutual free point-head mode through the hinged cross beam device 3.
The articulated beam device 3 is characterized in that a transition part 12 is arranged between an inner side articulated beam 32 and a left side beam 1, one end of the transition part 12 is connected with the left side beam 1 through fixed connection, the other end of the transition part is a column body which penetrates into the articulated device through an outer side articulated beam 31, a pivoting support 33 and an inner side articulated beam 32, the transition part is fixed inside an end cover of the inner side articulated beam 32 through a flange 322 to form a T-shaped beam, the articulated beam device 3 is composed of the outer side articulated beam 31, the inner side articulated beam 32, a left pivoting support 33, a right pivoting support 33, four middle traction rubber piles 34, a traction seat 35 and a transition part 12, the inner side articulated beam 32 extends into the outer side articulated beam 31, the outer side articulated beam 31 and the inner side articulated beam 32 are connected through the pivoting support 33 with a certain span on the left and right, and the outer side articulated beam 31 and the inner side articulated beam 32 can realize free torsion through the pivoting support 33, i.e. zero torsional stiffness between the two side beams. The two sides of the right side beam 2 of the left side beam 1 are fixedly connected with an extension beam 11, and a secondary spring device can be arranged on the extension beam 11.
The outer hinged beam 31 of the hinged beam device 3 is designed to be a cylindrical surface, the upper part of the sleeve 312 of the outer hinged beam 31 is provided with a straight notch, so that a traction pin connecting device at the center of the vehicle body can conveniently extend down to be matched with the traction seat 35, and meanwhile, the sleeve 312 of the outer hinged beam 31 is convenient for workers to disassemble and assemble during disassembly and assembly, and the lower part of the sleeve 312 of the outer hinged beam 31 is provided with a small hole, so that accumulated water in the hinged beam device 3 can be conveniently drained in rainy and snowy weather; the inner hinged beam 32 is of a box body 321 structure without an upper cover plate, the traction seat 35 is connected with the inner hinged beam 32 through four traction rubber piles 34, and a hole is formed in the center of a lower end plate of the inner hinged beam 32 so as to prevent the central traction device from colliding with the lower end plate of the inner hinged beam 32 during vertical displacement; the left and right pivoting supports 33 in the pivoting beam device 3 are in the same size and are arranged between the end plate of the inner pivoting beam 32 and the end cover 313 of the outer pivoting beam on the left and right sides respectively, the outer ring 331 of the pivoting support is fixed with the end cover 313 of the outer pivoting beam through screws, the inner ring 333 is fixed with the end cover plate of the inner pivoting beam 32 through screws, and the roller 332 is positioned between the inner ring and the outer ring.
The inner side hinged beam 32 extends into the outer side hinged beam 31 and is connected with the outer side hinged beam 31 through a rotary support 33 with a certain span at the left and right, during assembly, the outer side hinged beam 31 is fixedly connected with the right side beam 2 to form a T-shaped beam, the inner side hinged beam 32 and the left side beam 1 form another T-shaped beam, the inner side hinged beam 32 extends into the outer side hinged beam 31 after being provided with a traction rubber pile 34 and a traction seat 35, the two T-shaped beams are connected through the rotary support 33, wherein an outer ring 331 of the rotary support is fixed with the outer side hinged beam 31 through screws, an inner ring 333 is fixed with the inner side hinged beam 32 through screws, after assembly, the inner side hinged beam 32 is connected with the left side beam 1 through a transition piece 12, one end of the transition piece 12 is fixedly connected with the left side beam 1, and one end of the inner side hinged beam 32 extends into the inner side hinged beam 32 to fix the inner side hinged beam through a flange 322. The integral framework has no rhombus deformation, and the torsional rigidity between the beams at the two sides is zero, so that free point-head torsional movement can be performed.
In use, when the right side member 2 is subjected to a lateral force, the right side member 2 will have a force pulling to the outer hinge member 31 in a direction towards the right, which force is transmitted through the end face of the outer hinge member 31 to the outer race 331 of the slewing bearing, the slewing bearing 33 will transmit the force through its structure to the inner race 333, the inner race 333 will transmit the force to the end plate of the inner hinge member 32, which force in turn transmits the force through the end plate at the other end of the inner hinge member 32 to the transition member 12 through the flange 322, and the transition member 12 will ultimately transmit the force to the left side member 1. When the left side beam 1 is subjected to a lateral force to the left, the transmission path of the lateral force balance is opposite to the above path.
When the articulated cross beam device is used, when the left side beam 1 and the right side beam 2 are subjected to vertical force of a vehicle body, the two forces can generate bending moment on the articulated cross beam device 3, and because the articulated cross beam device 3 is provided with the left rotary support 33 and the right rotary support 33 which have a certain transverse distance in the transverse direction, the left rotary support 33 and the right rotary support 33 can generate corresponding force and bending moment to be balanced with the force and bending moment. When the left and right side members 1 and 2 are subjected to longitudinal force, they are balanced by means of the articulated cross member arrangement 3.
Therefore, the flexible framework can bear forces in three directions and torques in two directions, and only the degree of freedom of the flexible framework in rotation around the transverse shaft is released, so that the flexible framework belongs to an integral framework and has no rhomboid deformation, and meanwhile, the torsional rigidity between the left side beam 1 and the right side beam 2 is zero, namely, the left side beam 1 and the right side beam 2 can freely perform point-head torsional motion mutually, so that a bogie adopting the flexible framework simultaneously has excellent load balancing performance, line adaptability, curve trafficability and operation stability, and the contradiction between the operation stability and the curve trafficability can be fundamentally solved.
Claims (5)
1. The utility model provides a flexible framework that is used for adoption slewing bearing of rail vehicle bogie, its characterized in that, flexible framework is H type framework, comprises two T roof beams and two sets of slewing bearing (33) of linking the two, specifically includes left side roof beam (1), right side roof beam (2), outside articulated beam (31), inboard articulated beam (32), two slewing bearing (33) about, four traction rubber heap (34) and traction seat (35) in the middle of, transition piece (12) are constituteed, wherein: the outer side hinged beam end cover (313) of the hinged cross beam device (3) is fixedly connected with the right side beam (2) to form a T-shaped beam, the inner side hinged beam (32) is connected with the left side beam (1) through a transition piece (12), one end of the transition piece (12) is fixedly connected with the left side beam (1), the other end of the transition piece (12) is of a circular tube structure and penetrates through the outer side hinged beam end cover (313), the pivoting support (33) and the inner side hinged beam (32) end plate, the transition piece (322) is fastened in the inner side hinged beam (32) end plate, the left side beam (1) and the inner side hinged beam (32) form another T-shaped beam through the transition piece (12) and the flange (322), and the framework comprises two T-shaped beams and a left pivoting support (33) and a right pivoting support (33) which are connected with the T-shaped beams. The inner hinged beam (32) extends into the outer hinged beam (31), the inner hinged beam and the outer hinged beam are connected through rotary supports (33) with a certain transverse span at the left and the right, and the two rotary supports (33) and the hinged cross beam device (3) are coaxially arranged, so that the left side beam and the right side beam can freely rotate around a transverse shaft, and the connection rigidity in other directions is still higher.
2. The flexible framework using the pivoting support for the railway vehicle bogie as claimed in claim 1, wherein the inner hinged beam (32) is of an upwardly open box (321) structure, the traction base (35) is connected with the inner hinged beam (32) through four traction rubber piles (34), and the lower cover plate of the inner hinged beam (32) is centrally perforated so as not to cause the central traction device to move up and down to collide with the lower cover plate of the inner hinged beam (32); when the connecting device is used, the inner hinged beam and the left side beam are connected through the transition piece, one end of the transition piece (12) is fixedly connected with the left side beam (1), the other end of the transition piece is of a round pipe structure and penetrates through the end cover (313) of the outer hinged beam, the pivoting support (33) and the end plate of the inner hinged beam (32), the transition piece is fastened inside the end plate of the inner hinged beam (32) through a flange plate (322), and the left side beam (1) and the inner hinged beam (32) form another T-shaped beam through the transition piece (12) and the flange plate (322).
3. The flexible frame with a pivoting support for a railway vehicle bogie as claimed in claim 1, wherein the outer articulated beam sleeve (312) of the articulated beam assembly (3) is of cylindrical design, the upper part of the outer articulated beam (31) is provided with a long hole for facilitating the extension of the central towing pin connecting device of the vehicle body to be matched with the towing seat (35) and facilitating the assembly and disassembly maintenance of the pivoting support (33), and the lower part of the outer articulated beam (31) is provided with a hole for facilitating the drainage of accumulated water in the articulated beam assembly (3) in rainy and snowy weather. When the end cover is used, the non-free end of the outer hinged beam (31) is fixedly connected with the inner extending beam of the right side beam (2) to form a T-shaped beam, the T-shaped beam extends into the outer hinged beam (31) after the inner hinged beam (32) is assembled, the end cover of the free end of the outer hinged beam (31) is two semicircular end plates, and the outer hinged beam end cover (313) is fixedly connected with the outer hinged beam sleeve and the outer ring of the slewing bearing through bolts respectively. Two slewing bearings (33) in the hinged beam device (3) are of the same size and are arranged between the end face of the inner hinged beam (32) and the end face of the outer hinged beam (31) on the left and right sides respectively, the outer ring (331) of each slewing bearing is fixed with the end face of the outer hinged beam (31) through bolts, the inner ring (333) is fixed with the end cover of the inner hinged beam (32) through bolts, and the roller (332) is located between the inner ring and the outer ring of each slewing bearing.
4. A flexible frame with pivoting supports for railway vehicle bogies according to claim 1, characterized by the use of traction rubber piles (34), the articulated cross-member arrangement of the traction rubber piles (34) in cooperation with the central opening, having a compact structure in the longitudinal direction, allowing a reduction of the bogie wheelbase, facilitating the arrangement of the bogie with traction motors, and being more suitable for compact power bogies.
5. The flexible frame with the slewing bearing for the railway vehicle bogie as claimed in claim 1, wherein the slewing bearing (33) is adopted, the slewing bearing (33) has a small slewing angle, can simultaneously bear large axial and radial loads and overturning moments, is good in economic performance, is free from maintenance in use, achieves standardization among industries, and is convenient to use.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210037917.3A CN114559976B (en) | 2022-01-13 | 2022-01-13 | Flexible framework for railway vehicle bogie by adopting slewing bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210037917.3A CN114559976B (en) | 2022-01-13 | 2022-01-13 | Flexible framework for railway vehicle bogie by adopting slewing bearing |
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| CN114559976A true CN114559976A (en) | 2022-05-31 |
| CN114559976B CN114559976B (en) | 2024-02-27 |
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