CN114559976B - Flexible framework for railway vehicle bogie by adopting slewing bearing - Google Patents
Flexible framework for railway vehicle bogie by adopting slewing bearing Download PDFInfo
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- CN114559976B CN114559976B CN202210037917.3A CN202210037917A CN114559976B CN 114559976 B CN114559976 B CN 114559976B CN 202210037917 A CN202210037917 A CN 202210037917A CN 114559976 B CN114559976 B CN 114559976B
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- hinging
- hinged
- beams
- shaped
- slewing
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- 230000007704 transition Effects 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 description 7
- 239000010432 diamond Substances 0.000 description 7
- 239000000725 suspension Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 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
- 238000005516 engineering process Methods 0.000 description 1
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
-
- 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
-
- 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
Abstract
The invention discloses a flexible framework for a railway vehicle bogie, which adopts a slewing bearing, wherein the framework is in an H shape, and consists of two T-shaped beams and two slewing bearings for connecting the two T-shaped beams, each T-shaped beam consists of a beam extending along the longitudinal direction and a beam extending along the transverse direction towards the middle, the two sets of slewing bearings are coaxially arranged in a mode that the axes of the two T-shaped beams are parallel to the beams of the T-shaped beams, the beams of the two T-shaped beams are hinged and connected along the transverse axis, the two T-shaped beams can freely slewing around the axes of the two slewing bearings through the connection of the two sets of slewing bearings, meanwhile, the two T-shaped beams are connected in other directions in a near rigid mode, the bogie adopting the flexible framework has extremely low torsional rigidity, so that the bogie adapts to line irregularity to the greatest extent, ensures stability, and the beams of the two T-shaped beams of the framework are all in an upper side opening structure, and a central traction device between the two T-shaped beams can be arranged, so that the bogie is suitable for a short wheelbase and is favorable for the installation of a driving device, and compact and lightweight design of the bogie is realized.
Description
Technical Field
The invention relates to the technical field of bogies, in particular to a flexible framework for a railway vehicle bogie, which adopts a slewing bearing.
Background
The existing railway bogie mainly comprises an integral framework type bogie and a three-piece type bogie, the integral framework type bogie can eliminate diamond deformation, but has poor line twisting adaptation capability, the line twisting is required to be adapted by means of soft first-line vertical deformation, the requirements on first-line hanging and rails are high, the three-piece type bogie has strong line twisting adaptation capability, but has a loose structure, small diamond resistance and low running speed.
The existing partially flexible unitary frame can reduce torsional stiffness between the two side beams, which is achieved primarily by rubber knuckles or sheet steel beams. For the flexible framework adopting the rubber joint, the bearing torque of the rubber joint is larger, and the two side beams of the flexible framework adopting the rubber joint can only rotate for a certain angle, so that the free torsion between the two side beams can not be realized; the beam adopts a thin steel plate to realize a flexible framework, the rotation angle between the two side beams is limited, and free torsion cannot be realized. For a bogie in which the two side beams cannot twist freely, the line adaptation capability and the curve passing capability are limited.
Disclosure of Invention
The invention mainly solves the technical problems of providing an integral framework which has no diamond 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 following technical scheme: a flexible truss for a railway vehicle truck employing a slewing bearing comprising two T-beams and two slewing bearing sets linking the two, wherein: the two side beams are connected with the wheel set 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 twist by nodding around a transverse axis or a Y axis in a dynamic generalized coordinate of the vehicle through the hinged cross beam device, and the other directions keep high rigidity.
Preferably, the flexible framework device consists of a left side beam, a right side beam, an outer side hinging beam, an inner side hinging beam, left and right slewing bearings, a middle four traction rubber stacks, a traction seat and a transition piece. The outer hinging beam is designed by adopting a cylindrical surface, a long-distance hole is formed in the upper portion of the outer hinging beam, a traction pin connecting device at the center of a vehicle body is convenient to stretch down to be matched with the traction seat, meanwhile, workers can conveniently disassemble and assemble the outer hinging beam during disassembly, and a small hole is formed in the lower portion of the outer hinging beam, so that accumulated water in the beam device can be conveniently discharged in rainy and snowy days; the inner side articulated beam is of a box structure, an upper cover plate is not arranged, the traction seat is connected with the inner side articulated beam through four traction rubber piles, and the center of the lower end plate of the inner side articulated beam is provided with a hole so as to prevent the central traction device from moving up and down to collide with the lower end plate of the inner side articulated beam; the left bearing and the right bearing in the hinged beam device are of the same size, a slewing bearing is adopted, the left bearing and the right bearing are respectively arranged between the inner hinged beam end cover and the outer hinged beam end cover, an outer ring of the slewing bearing is fixed with the outer hinged beam end cover through screws, and an inner ring of the slewing bearing is fixed with the inner hinged beam end cover plate through screws.
Further preferably, the outer side hinged beam end cover of the hinged beam device is directly fixedly connected with the right side beam to form a T-shaped beam, the inner side hinged beam is connected with the left side beam through a transition piece, a 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 is columnar and penetrates through the outer side hinged beam end cover, the slewing bearing and the inner side hinged beam end cover, the outer side hinged beam end cover is fastened inside the inner side hinged beam end cover through a flange plate, and the two T-shaped beams realize free rotation around an axis through the left slewing bearing and the right slewing bearing.
Further preferably, the two rotary supports adopt bearings with the same inner diameter and outer diameter, and are fastened with the inner side hinged beam end plate and the outer side hinged beam end plate through screws, so that the two rotary supports are convenient to detach.
The inner hinging beams extend into the outer hinging beams, and are connected through slewing bearings with certain spans left and right, so that the flexible framework forms an integral framework, diamond deformation is avoided, torsional rigidity between the beams at two sides is zero, and free nodding torsion movement can be achieved.
The two sides of the left side beam and the right side beam are fixedly connected with an extension beam, and a secondary spring device can be arranged on the extension beam.
Compared with the prior art, the invention has the following advantages:
1. the flexible framework of the invention belongs to an H-shaped framework, is of an integral stable structure, and can bear forces in three directions and torques in two directions by means of the hinged beam device, namely, the forces in three directions and torques in two directions can be balanced, and only the degree of freedom of rotation around the transverse direction is released, so that the bogie has good load balancing performance, high stability, high safety of passing curves and strong line twisting adaptability, and the bogie can be operated at various lines.
2. The bogie using the flexible framework of the invention has no diamond deformation and zero torsional rigidity, and can simultaneously have excellent running stability and curve passing performance, thereby fundamentally solving the contradiction between the running stability and curve passing performance of the traditional bogie.
3. The two side beams of the flexible framework are easy to generate relative torsion motion around the transverse shaft, so that the capability of adapting to line irregularity of the corresponding bogie is greatly enhanced, the bogie adopts axlebox-free suspension or axlebox suspension with simple structure, thereby reducing the production and maintenance cost of the bogie, and if the bogie adopts axlebox suspension with better performance, the running speed of the bogie is higher, and the running stability is better.
4. The flexible framework adopts the traction rubber pile, the setting of the traction pull rod is canceled, 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 use process.
6. The flexible framework is applicable to short-wheelbase bogies, is more applicable to compact power bogies by adopting a traction rubber pile center traction mode, is convenient for the bogies to arrange traction motors, and can be matched with bogies of different projects, so that the development cost of the bogies is reduced.
Drawings
FIG. 1 is a schematic view of a flexible frame employing slewing bearings for a railway vehicle truck in accordance with example 1;
FIG. 2 is a top view of a structure of a flexible frame employing slewing bearings for a railway vehicle truck in accordance with example 1;
FIG. 3 is a schematic view showing the structure of the articulated beam apparatus in embodiment 1;
FIG. 4 is a schematic view of the structure of the outboard hinge beam and slewing bearing in example 1;
FIG. 5 is a schematic view of the structure of the inboard hinge beam and slewing bearing in example 1;
FIG. 6 is a schematic structural view of a transition piece in embodiment 1;
fig. 7 is a schematic structural view of the slewing bearing in embodiment 1;
fig. 8 is a schematic structural view of the traction rubber stack in embodiment 1;
the marks in the figure: 1-left side beams, 11-extension beams, 12-transition pieces, 2-right side beams, 3-hinged cross beam devices, 31-outer hinged beams, 312-sleeves, 313-outer hinged beam end covers, 32-inner hinged beams, 321-boxes, 322-flanges, 33-slewing bearings, 331-outer rings, 332-rollers, 333-inner rings, 34-traction rubber stacks and 35-traction seats.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and specific examples. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
As shown in fig. 1-8, the present invention provides a flexible frame for a railway vehicle truck employing a slewing bearing, comprising:
the flexible framework is an H-shaped framework and comprises two longitudinally arranged left side beams 1, right side beams 2 and a group of transversely arranged hinged cross beam devices 3, wherein: the two ends of the left side beam 1 and the right side beam 2 are connected with wheel pairs through a series of suspension devices, a transversely arranged hinged 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 do mutual free nodding rotation around the central line of the hinged beam device 3 by means of the hinged beam device 3.
The hinged beam device 3 is characterized in that a transition piece 12 is arranged between an inner side hinged beam 32 and the left side beam 1, one end of the transition piece 12 is fixedly connected with the left side beam 1, the other end of the transition piece is a column body, the transition piece is penetrated into the hinged device through an outer side hinged beam 31, a slewing bearing 33 and the inner side hinged beam 32, the transition piece is fixed in an end cover of the inner side hinged beam 32 through a flange plate 322 to form a T-shaped beam, the hinged beam device 3 consists of an outer side hinged beam 31, an inner side hinged beam 32, left and right slewing bearings 33, four traction rubber stacks 34 in the middle, a traction seat 35 and the transition piece 12, the inner side hinged beam 32 stretches into the outer side hinged beam 31, the outer side hinged beam 31 and the inner side hinged beam 32 are connected through slewing bearings 33 with a certain span on the left and right sides, and the outer side hinged beam 31 and the inner side hinged beam 32 can realize mutual free torsion through the slewing bearings 33, namely torsional rigidity between the two side beams is zero. The two sides of the left side beam 1 and the right side beam 2 are fixedly connected with an extension beam 11, and a secondary spring device can be arranged on the extension beam 11.
The outer side hinging beam 31 of the hinging beam device 3 adopts a cylindrical surface design, a straight notch is formed in the upper part of a sleeve 312 of the outer side hinging beam 31, so that a traction pin connecting device at the center of a vehicle body can conveniently extend to be matched with a traction seat 35, and meanwhile, when the hinging beam device is dismounted, a worker can conveniently dismount the hinging beam device, a small hole is formed in the lower part of the sleeve 312 of the outer side hinging beam 31, and accumulated water in the hinging beam device 3 can be conveniently discharged in rainy and snowy days; the inner hinged beam 32 is in a box 321 structure, an upper cover plate is not arranged, the traction seat 35 is connected with the inner hinged beam 32 through four traction rubber stacks 34, and the center of the lower end plate of the inner hinged beam 32 is provided with a hole so as to prevent the central traction device from colliding with the lower end plate of the inner hinged beam 32 when being displaced up and down; the left and right slewing bearings 33 in the articulated beam device 3 are of the same size, are respectively arranged between the end plate of the inner articulated beam 32 and the end cover 313 of the outer articulated beam, the outer slewing bearing ring 331 is fixed with the end cover 313 of the outer articulated beam through screws, the inner slewing bearing ring 333 is fixed with the end cover plate of the inner articulated beam 32 through screws, and the rollers 332 are arranged between the inner and outer slewing bearing rings.
The inner hinge beam 32 extends into the outer hinge beam 31, the outer hinge beam 31 is fixedly connected with the right side beam 2 through a slewing bearing 33 with a certain span on the left and right sides during assembly, a T-shaped beam is formed, the inner hinge beam 32 and the left side beam 1 form another T-shaped beam, the inner hinge beam 32 penetrates into the outer hinge beam 31 after a traction rubber pile 34 and a traction seat 35 are installed, the two T-shaped beams are connected through the slewing bearing 33, an outer slewing bearing ring 331 is fixed with the outer hinge beam 31 through a screw, an inner ring 333 is fixed with the inner hinge beam 32 through a screw, the inner hinge beam 32 is connected with the left side beam 1 through a transition piece 12 after assembly, one end of the transition piece 12 is fixedly connected with the left side beam 1, and the other end of the transition piece penetrates into the inner hinge beam 32 to be fixed through a flange 322. The integral framework has no diamond deformation, the torsional rigidity between the beams at the two sides is zero, and free nodding torsional movement can be performed.
In use, when the right side member 2 receives a rightward transverse force, the right side member 2 will have a rightward tensile force on the outer hinge member 31, and the force will be transmitted to the outer ring 331 of the slewing bearing through the end face of the outer hinge member 31, the slewing bearing 33 will transmit the force to the inner ring 333 through its own structure, and the inner ring 333 will transmit the force to the end plate of the inner hinge member 32, and the force will be transmitted to the transition member 12 through the end plate of the other end of the inner hinge member 32, and the transition member 12 will finally transmit the force to the left side member 1. When the left side member 1 receives a leftward lateral force, the transmission path of the lateral force balance is opposite to the above-described path.
When the left side beam 1 and the right side beam 2 are subjected to the vertical force of the vehicle body in use, the two forces can generate bending moment on the hinged beam device 3, and as the hinged beam device 3 is provided with the left and right slewing bearings 33 with a certain transverse distance, corresponding forces and bending moment balance with the forces and bending moment through the left and right slewing bearings 33. The left and right side members 1, 2 are also balanced by means of the hinge cross member device 3 when subjected to longitudinal forces.
Therefore, the flexible framework can bear forces in three directions and torques in two directions, only the degree of freedom of the flexible framework in rotation around a transverse shaft is released, and therefore the flexible framework belongs to an integral framework, diamond deformation is avoided, 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 do free reciprocal nodding and twisting movements, so that the bogie adopting the flexible framework has excellent load balancing property, line adaptability, curve trafficability and running stability, and the contradiction between the running stability and the curve trafficability can be fundamentally solved.
Claims (2)
1. The flexible framework is an H-shaped framework and consists of two T-shaped beams and two sets of slewing bearings (33) for connecting the two T-shaped beams with each other, and specifically comprises a left side beam (1), a right side beam (2), an outer side hinging beam (31), an inner side hinging beam (32), left and right slewing bearings (33), four traction rubber stacks (34) in the middle and traction seats (35), a transition piece (12), wherein an outer side hinging beam end cover (313) of a hinging beam device (3) is fixedly connected with the right side beam (2) to form a T-shaped beam, one end of the transition piece (12) is fixedly connected with the left side beam (1) through the transition piece (12), the other end of the transition piece (12) penetrates through the outer side hinging beam end cover (313), the slewing bearings (33) and the inner side hinging beam (32) end plate through a flange plate (322) to fasten the inner side hinging beam (32) end plate, and the left side beam (1) is fixedly connected with the inner side beam (32) through the transition piece (12) and the flange plate (322) to form another T-shaped beam; the inner hinging beam (32) stretches into the outer hinging beam (31), the inner hinging beam and the outer hinging beam are connected through a slewing bearing (33) with a certain transverse span on the left and right, and the two slewing bearings (33) are coaxially arranged with the hinging cross beam device (3) so that the left and right side beams can freely rotate around the transverse shaft; the inner side articulated beam (32) is of an upward opening box body (321) structure, the traction seat (35) is connected with the inner side articulated beam (32) through four traction rubber piles (34), and the center of the lower cover plate of the inner side articulated beam (32) is provided with a hole so as to prevent the center traction device from moving up and down to collide with the lower cover plate of the inner side articulated beam (32).
2. The flexible framework for the bogie of the railway vehicle adopting the slewing bearing according to the claim 1 is characterized in that an outer side hinging beam sleeve (312) of the hinging beam device (3) adopts a cylindrical surface design, a long round hole is formed at the upper part of the outer side hinging beam (31), a traction pin connecting device at the center of a vehicle body is convenient to extend to be matched with a traction seat (35), meanwhile, the slewing bearing (33) is convenient to assemble and disassemble and overhaul, and a hole is formed at the lower part of the outer side hinging beam (31), so that accumulated water in the hinging beam device (3) is convenient to drain in rainy and snowy days; when the novel telescopic hinged beam 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 free end cover 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 slewing bearing outer ring by bolts respectively; the two rotary supports (33) in the hinged beam device (3) are of the same size, are respectively arranged between the end face of the inner side hinged beam (32) and the end face of the outer side hinged beam (31) left and right, the outer ring (331) of the rotary support is fixed with the end face of the outer side hinged beam (31) through bolts, the inner ring (333) is fixed with the end cover of the inner side hinged beam (32) through bolts, and the rollers (332) are arranged between the inner ring and the outer ring of the rotary support.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
|---|---|
| CN114559976A CN114559976A (en) | 2022-05-31 |
| CN114559976B true CN114559976B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210037917.3A Active CN114559976B (en) | 2022-01-13 | 2022-01-13 | Flexible framework for railway vehicle bogie by adopting slewing bearing |
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| CN114559976A (en) | 2022-05-31 |
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