CN207433547U - Track freight vehicle side bearing - Google Patents
Track freight vehicle side bearing Download PDFInfo
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- CN207433547U CN207433547U CN201721162136.8U CN201721162136U CN207433547U CN 207433547 U CN207433547 U CN 207433547U CN 201721162136 U CN201721162136 U CN 201721162136U CN 207433547 U CN207433547 U CN 207433547U
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- side bearing
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- main body
- wearing
- freight vehicle
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Abstract
The utility model discloses a kind of track freight vehicle side bearings, including side bearing box, side bearing packaging frame and elastic parts are equipped in side bearing box, side bearing packaging frame is picked up the ears including pedestal, main body upper plate and main body, elastic parts is assemblied between pedestal and main body upper plate, wearing plate is provided on main body upper plate and is provided at both ends with downward elongated end, main body picks up the ears to be provided with side wearing chunk between upper wearing plate elongated end, and upper wearing plate elongated end is fitted closely with side wearing chunk with arc-shaped curved surface.The utility model dismounting is simple and convenient, it is easy to later maintenance, side bearing elastic parts bearing capacity is strong, and stiffness tuning scope is big, and stress is uniform, it is permanently deformed small, the scope of application of side bearing is expanded, service life and the stability of side bearing is improved, effectively reduces stress concentration phenomenon, stable frictional resistance moment is provided, improves vehicle safety in operation.
Description
Technical field
The utility model is related to railway transportation vehicle accessories, and in particular to a kind of track freight vehicle side bearing.
Background technology
The main function of side bearing is to slow down steering resistance appropriate between vehicle hunting and guarantee bogie and car body
Square, side bearing are to ensure one of rolling stock operation stability and the key components and parts of security.At present, the existing side bearing bag in China
Include clearance-type elastic side bearing and the Constant-Contact Resilient Side Bearings.Clearance-type elastic side bearing, i.e., when vehicle is in linear running, usually up and down
Side bearing body does not contact, and there are certain intervals.So the shortcomings that clearance-type side bearing is when generating smaller side rolling, car body is because obtaining
Less than the inhibition of frictional resistance moment, critical speed is low, and operate steadily difference.Existing normal contact elastic side bearing is lacked there are following
Point：Most of elastic side bearing is bonding strong between rubber bodies elastomer and metal component using rubber and the composite construction of metal
It spends relatively low, the problem of fastness is inadequate that come unglued, be bonded easily occurs, and during the use in later stage, bonding plane is in alternating load
Under the action of be susceptible to fatigue rupture；Rubber material is directly resulted in there are anti-aging property difference and the problem of big that is permanently deformed
Generally there is elastic element cracking after a period of time of being on active service in existing elastic side bearing, rigidity becomes larger and permanent deformation is significantly increased
Phenomena such as, permanent deformation can cause following consequence：First, side bearing clearance can be caused to substantially reduce, dynamics of vehicle ginseng is changed
Number can deteriorate the dynamic stability of vehicle when serious；Second is that ensure the working depth of side bearing during vehicle maintenance, it must
Adjusting pad must be increased in side bearing body lower part, since permanent deformation is with the increase of side bearing rigidity, the addition of adjusting pad will be it is possible that will
Cartridge chooses sky, and empty wagons derailment can be caused when serious.The existing elastic side bearing service life is shorter in native land, usually only 4-5
Year, cause operation and maintenance cost higher, and be unfavorable for environmental protection.And in use, rubber can generate creep, because
Creep is uneven, and upper wearing plate cannot keep horizontal completely, and upper wearing plate cannot be completely attached to compartment, reduce turning power
Square increases the abrasion of wearing plate, waste of resource.The high/low temperature adaptability of rubber material is poor so that the rigidity of side bearing body
Key parameters are waited as temperature change differs greatly, since China the North and South temperature difference maximum can reach 70 degrees Celsius, elasticity is other
Larger change occurs therewith for the performance held in use, by the operation stability for reducing rail vehicle or even generates safety
Hidden danger.The Constant-Contact Resilient Side Bearings disclosed in Chinese patent CN2341856Y can constrain car body rolling, but can not provide
Relatively stablize the frictional resistance moment between increase bogie and car body, effectively to inhibit the hunting of shaking the head of bogie and car body.
The Constant-Contact Resilient Side Bearings disclosed in Chinese patent CN2375535Y, though relatively stable frictional resistance moment is capable of providing, only
There are two contact points to provide frictional resistance moment, can generate stress concentration phenomenon, side bearing is made to generate permanent deformation, it is impossible to play
The effect for stablizing flywheel moment is provided.
Utility model content
Purpose of utility model：The purpose of this utility model is to provide a kind of track freight vehicle side bearing, solves existing side
Hold that generally existing moment of friction is unstable, elastic element cracking, rigidity vary with temperature that amplitude is big and unstable, permanent deformation
Greatly, metal and rubber bound face are susceptible to stress concentration, fatiguability destroys, service life is shorter, and maintenance cost is high, and unfavorable
In the environmental protection a series of problems, such as.
Technical solution：Track freight vehicle side bearing described in the utility model, which is characterized in that it includes side bearing box,
Be equipped with side bearing packaging frame and elastic parts in the side bearing box, the side bearing packaging frame include pedestal, main body upper plate and
Main body is picked up the ears, and the elastic parts is assemblied between the pedestal and main body upper plate, and abrasion are provided on the main body upper plate
Plate, the upper wearing plate are provided at both ends with downward elongated end, and the main body picks up the ears to set between the upper wearing plate elongated end
Side wearing chunk is equipped with, the upper wearing plate elongated end is bonded with the side wearing chunk with arc-shaped curved surface.Wherein, the elastic parts
Including at least one multilayer S-shaped metallic plate, the metallic plate corner by arc transition, the circular arc surround one it is hollow
Slot is equipped with branch roller in the hollow groove.
The setting effectively prevents stress concentration, reduces abrasion, effectively inhibits the snake fortune of shaking the head of bogie and car body
It is dynamic, the torque undertaken needed for elastic parts is also reduced, reduces the stress level of elastic parts, improves the safety system of elastic parts
Number and fatigue life, it can work always in elastic range and be nearly free from permanent deformation, and solve because creep is uneven
And the frictional resistance moment provided is provided and wears away the problem of big, and rigidity is stablized, elastic parts carries height in use, and
Indeformable long lifespan.
In order to improve the service life of side bearing and stability, the S-shaped metallic plate is metastable state austenitic stainless steel.
In order to meet strength demand and cost requirement, the quantity of the multilayer S-shaped metallic plate is two, two S-shaped metals
The material of plate and number of plies all same, and two S-shaped metallic plate antisymmetry arrangements.The structure can meet larger requirement for bearing capacity
On the basis of, while ensure suitable rigidity, not only inherit metal --- the advantages of rubber side bearing elastomer, but also efficiently solve existing
The problem of using as a servant side bearing.
In order to save space, space availability ratio is high, is positioned between two metallic plates by boss, each S-shaped metallic plate
The transition arc of first layer is located remotely from the position of boss.
In order to mitigate weight and save material cost, several through holes are offered among the S-shaped metallic plate.
In order to reduce the stress at side bearing transition arc, the branch roller is made of high molecular material, by changing macromolecule
The elasticity modulus of material can change the rigidity of side bearing.
In order to reduce the stress of contact position, effectively prevent stress concentration, reduce abrasion, effectively inhibit bogie with
The hunting of shaking the head of car body, also reduces the torque undertaken needed for elastic parts, reduces the stress level of elastic parts, improves
The safety coefficient of elastic parts and fatigue life, the elongated end of the upper wearing plate and the section of side wearing chunk are arcuate structure.
The utility model design principle is：Using main body of the metallic plate as elastic parts, the work in the range of design load
When making, it can work always in elastic range and be nearly free from permanent deformation, and rigidity is stablized；By filling different elasticity
The elasticity modulus of the macromolecule branch roller of modulus can adjust side bearing rigidity, so that the side bearing of same dimensions is with broader
The rigidity scope of application and reliable and stable, new side bearing can be thus applied on a variety of rail vehicles, side bearing specification can
It significantly reduces, convenient for Maintenance and Repair and management, and reduces the operation cost of rail vehicle；Side bearing primary structure is using metastable
The post forming reinforcement process of austenitic stainless steel, it is first to austenite stainless steel plate by rolling working hardening, this is stainless
Then the strength enhancing of steel plate carries out moulding process, the intensity of stainless-steel sheet obtains in forming process to design intensity
To secondary hardening, so as to obtain sufficient Strength surplus, this method not only contributes to the molding control of side bearing metallic elastic component
Precision more improves service life and the stability of side bearing；Non-binding face between metal and macromolecule cylinder branch roller, is not required existing production
The metal that product use --- rubber vulcanization process effectively overcomes bonding rubber to metal face in existing side bearing structure easy in the presence of scarce
Fall into, adhesive strength is low, stress concentration, fatigue rupture the problems such as；Because double sigmoid metallic plate permanent deformation is small, side bearing was using
Cheng Zhong, upper wearing plate can be bonded compartment closely always, provide stable torsional moment, and the loss of wearing plate in reduction is saved
Resource.
Advantageous effect：The utility model dismounting is simple and convenient, is easy to later maintenance, and side bearing elastic parts bearing capacity is strong,
Stiffness tuning scope is big, and stress is uniform, and permanent deformation is small, expands the scope of application of side bearing, improves service life of side bearing and steady
It is qualitative, stress concentration phenomenon is effectively reduced, provides stable frictional resistance moment, improves vehicle safety in operation.
Description of the drawings
Fig. 1 is the structure diagram of side bearing；
Fig. 2 is the top view of side bearing；
It picks up the ears based on Fig. 3 and side wearing chunk attachment structure schematic diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figs. 1-2, track freight vehicle side bearing includes side bearing box 1, and side bearing packaging frame is equipped in side bearing box 1
3 and side bearing elastic parts, side bearing packaging frame picks up the ears 9 including pedestal 7, main body upper plate 6 and main body, and side bearing elastic parts is assemblied in
Between pedestal 7 and main body upper plate 6, side bearing elastic parts includes two multilayer S-shaped metallic plates 8, the material of two S-shaped metallic plates 8
With number of plies all same, and two 8 antisymmetry of S-shaped metallic plate arrangement is convex on pedestal 7 by being arranged between two metallic plates 8
Platform positions, and the transition arc of the first layer of each S-shaped metallic plate and the position for being located remotely from boss, so setting effectively to save
About space.The quantity of multilayer S-shaped metallic plate can be multiple according to actual demand setting, and metallic plate corner is provided with transition circle
Arc, circular arc surround a hollow groove, and branch roller 2 is removably equipped in hollow groove, and S-shaped metallic plate 8 is difficult to understand for metastable state
Family name's body stainless steel, branch rod are made of high molecular material.8 upper end of multilayer S shapes metallic plate is connected with main body upper plate 6, and lower end is with pedestal
7 connections, multilayer S-shaped metallic plate offer several through holes on 8 each smaller intermediate region of ply stress.It is provided on main body upper plate
Wearing plate 4, upper wearing plate 4 are provided at both ends with downward elongated end, and elongated end interface is arcwall face, and main body is picked up the ears 9 and upper abrasion
Side wearing chunk 5 is provided between 4 elongated end of plate, wearing chunk 5 section in side is also arcwall face, and upper 4 elongated end of wearing plate is consumed with side grinding
Block 5 is fitted closely with arc-shaped curved surface.
As shown in figure 3, main body picks up the ears 9 to be connected with side wearing chunk 5 with six screws, main body picks up the ears 9 with side wearing chunk 5 to exist
After screw connection, side wearing chunk 5 can inwardly have a certain displacement in screw length direction, side wearing chunk 5 and main body pick up the ears on have bullet
Spring groove, in side, wearing chunk 5 and main body are picked up the ears 9 11 central filler spring 12 of spring groove, are so ensured that, side bearing exists
During use, even if side wearing chunk 5 has abrasion with upper wearing plate 4, side wearing chunk 5 can also be bonded always with upper wearing plate 4.
8 lower end of multilayer S-shaped metallic plate is all by rivet interlacement with main body upper plate 6 with side bearing pedestal 7, upper end.
Multilayer S-shaped metallic plate lower end is all by rivet interlacement, main body side with main body upper plate 6 with side bearing pedestal 7, upper end
Ear 9 is used for side bearing being fixed in side bearing box, prevents side bearing from being rocked in loading process in side bearing box.
Wherein, side bearing S-shaped metallic plate selects the stainless steel that the trade mark is SUS301, elasticity modulus 207Gpa, and Poisson's ratio is
0.29, thickness 3.5mm, transition arc hollow groove internal diameter are 11.1mm, and the metallic plate for connecting two transition arc hollow grooves is wide
It spends for 28mm, every layer of distance is 7.5mm, and the through-hole diameter that metallic plate centre position is opened is 10mm；Branch roll material is toughening
Nylon, elasticity modulus 500Mpa, Poisson's ratio 0.41, branch roller diameter are 11.08mm, length and transition arc hollow groove
Length is identical, is 114mm；Side wearing chunk 5 is similarly nylon material with upper wearing plate 4；At this point, side bearing elastic parts is vertical firm
It spends for 2kN/mm, bearing capacity is up to more than 33kN.
In the case of semi-static load, multilayer double sigmoid metallic plate 8 is Δ l per layer vertical displacement, seven layers of elastic metal sheet
Global displacement be seven times of Δ l, realize the purpose for Low rigidity elastic element using the made of metal of high elastic modulus, simultaneously
The overall stiffness of the double S type metallic plates of adjustment can be realized by adjusting the number of plies of elastic metal sheet, generally can in practical application
5-8 layers of metallic plate are set.Spring beam is by circular sliding slopes, because larger in circular arc stress, so the filled high polymer in circular arc
Circular arc stress can be greatly reduced in cylinder branch roller 2, and by selecting the macromolecule branch roller of dual extension-compression modulus that can adjust side
Rigidity is held, so that the side bearing of same dimensions has the wider range of rigidity scope of application and reliable and stable.
In the preparation, thickness is selected to be more than the metastable state austenite stainless steel plate of design requirement, and it is rolled, made
It obtains its thickness and reaches design load, while make the intensity of stainless-steel sheet because partial austenitic is changed into acicular martensite and shape
Become and strengthen and promoted to design intensity；Width cuts stainless steel plate as needed for elastic parts, then to cutting
Stainless steel plate carry out moulding process, prepare bending mold, with reference to automatic plate-bending apparatus be bent into layer multilayer S types gold
Belong to plate elastic element, the intensity of stainless-steel sheet obtains secondary hardening in forming process, so as to obtain enough intensity；Then
Drilling machine processing perforate loss of weight is carried out in the smaller position of every layer of metallic plate intermediate stress；Intensity and elasticity modulus is selected to be satisfied by wanting
The high molecular material asked prepares cylindrical high molecular material branch roller by turnery processing, the diameter of branch roller in S type metallic plates
Transition arc hollow groove clearance fit, the length of branch roller and being of same size for S type metallic plates；First main body is picked up the ears and bottom with rivet
Seat connection, then two S type metallic plate elastic elements antisymmetry are arranged, and be connected it with pedestal using rivet, then equally adopt
It with main body upper plate is connected with rivet, cylindrical high molecular material branch roller is finally filled into the multiple-plate transition arcs of double S
Hollow groove；First side wearing chunk is picked up the ears to be connected with screw with main body, then pick up the ears inwardly to apply pressure to two main bodys and generate armed
It moves so that the distance that two main bodys of side bearing are picked up the ears is less than side bearing box, side bearing is packed into side bearing box, i.e. side bearing pedestal is placed on side
Cassette bottom portion is held, the cylindrical hole of side bearing pedestal is installed at side bearing box positioning.Finally upper wearing plate is installed on main body upper plate, i.e.,
The circular hole of upper wearing plate is sleeved on the positioning cylinder on main body upper plate.
When mounted, first macromolecule branch roller is filled into the transition arc hollow groove transition arc of multilayer S-shaped metallic plate
At empty slot, then two side wearing chunks are connected to both sides main body and pick up the ears inside, then to pick up the ears to add certain pre- displacement then to main body
Side bearing is placed in side bearing box, side bearing pedestal is located in side bearing cassette bottom, and upper wearing plate 4 finally is fixed on side bearing packaging frame
On upper plate, the connection mode of upper wearing plate and main body upper plate is assemblied in by the raised through hole with upper wearing plate of main body upper plate
Together, upper wearing plate both sides elongated end is positioned over side wearing chunk and between main body picks up the ears, it is picked up the ears with side wearing chunk and main body
Between close connection is bonded with arc-shaped curved surface.
When in use, when car body falls vehicle, S-shaped metallic plate can generate larger pre compressed magnitude, thus generate vertical side bearing encapsulation
The support force of frame upper plate upper surface.When vehicle is by straight way or smaller side rolling vibration, because multilayer S-shaped metallic plate is in elastic model
In enclosing, permanent deformation is minimum, is capable of providing stable side bearing support force inhibition compartment and sidewinders, improves the critical of vehicle operation
Speed and stationarity.When vehicle passes through curve circuit, since main body upper plate, upper wearing plate and side wearing chunk contact surface are arc
Shape curved surface, expands contact area, reduces stress concentration phenomenon, provides stable frictional resistance moment, so elastic side bearing
Stable support force and frictional resistance moment are capable of providing, inhibition bogie is snakelike and improves bogie curve negotiation ability.This reality
Elastic metallic steel plate is used with new, solves the problems, such as that the high/low temperature adaptability of rubber material is poor；It is capable of providing and relatively stablizes
Frictional resistance moment between bogie and car body；Side bearing enable in vertical alternating load, longitudinal direction
There is the working life of overlength in the case of a variety of load effects such as force of sliding friction, sliding-frictional resistance square, and
And high/low temperature is adaptable.
Claims (8)
1. a kind of track freight vehicle side bearing, which is characterized in that it includes side bearing box (1), is equipped in the side bearing box (1)
Side bearing packaging frame (3) and elastic parts, the side bearing packaging frame (3) include pedestal (7), main body upper plate (6) and main body side
Ear (9), the elastic parts are assemblied between the pedestal (7) and main body upper plate (6), are provided on the main body upper plate (6)
Upper wearing plate (4), the upper wearing plate (4) are provided at both ends with downward elongated end, and the main body is picked up the ears (9) and the upper abrasion
Side wearing chunk (5) is provided between plate (4) elongated end, upper wearing plate (4) elongated end is with the side wearing chunk (5) with arc
Curved surface fits closely；The elastic parts includes at least one multilayer S-shaped metallic plate (8), and the metallic plate corner passes through circle
Arc transition, the circular arc surround a hollow groove, branch roller (2) are equipped in the hollow groove.
2. track freight vehicle side bearing according to claim 1, which is characterized in that the S-shaped metallic plate (8) is metastable
Metallic plate made of state austenitic stainless steel.
3. track freight vehicle side bearing according to claim 1, which is characterized in that the multilayer S-shaped metallic plate (8)
Quantity is two.
4. track freight vehicle side bearing according to claim 1, which is characterized in that every layer of S-shaped metallic plate (8)
Several through holes are offered among stress smaller area.
5. track freight vehicle side bearing according to claim 3, which is characterized in that the material of two S-shaped metallic plates (8)
With number of plies all same, and two S-shaped metallic plate (8) antisymmetry arrangement.
6. track freight vehicle side bearing according to claim 5, which is characterized in that pass through boss between two metallic plates
Positioning, the transition arc of the first layer of each S-shaped metallic plate are located remotely from the position of boss.
7. track freight vehicle side bearing according to claim 1, which is characterized in that the branch roller (2) is by macromolecule material
Branch roller made of material.
8. track freight vehicle side bearing according to claim 1, which is characterized in that the elongated end of the upper wearing plate and
The section of side wearing chunk is arcuate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162136.8U CN207433547U (en) | 2017-09-11 | 2017-09-11 | Track freight vehicle side bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162136.8U CN207433547U (en) | 2017-09-11 | 2017-09-11 | Track freight vehicle side bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207433547U true CN207433547U (en) | 2018-06-01 |
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ID=62302390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721162136.8U Active CN207433547U (en) | 2017-09-11 | 2017-09-11 | Track freight vehicle side bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207433547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745723A (en) * | 2017-09-11 | 2018-03-02 | 江苏科技大学 | Side bearing and preparation method thereof |
-
2017
- 2017-09-11 CN CN201721162136.8U patent/CN207433547U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745723A (en) * | 2017-09-11 | 2018-03-02 | 江苏科技大学 | Side bearing and preparation method thereof |
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