CN102556098B - Variable friction control type oscillating damper of rail wagon - Google Patents
Variable friction control type oscillating damper of rail wagon Download PDFInfo
- Publication number
- CN102556098B CN102556098B CN201210010738.7A CN201210010738A CN102556098B CN 102556098 B CN102556098 B CN 102556098B CN 201210010738 A CN201210010738 A CN 201210010738A CN 102556098 B CN102556098 B CN 102556098B
- Authority
- CN
- China
- Prior art keywords
- wedge body
- tapered wedge
- control type
- push rod
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a variable friction control type oscillating damper of a rail wagon. The oscillating damper comprises a tapered wedge body and an oscillation damping spring assembly, wherein the oscillation damping spring assembly is arranged blow the tapered wedge body; the tapered wedge body is installed at the position of an end dent composed of a swing bolster; the lower end of the oscillation damping spring assembly is fixed on a central square frame spring bearing platform formed by lateral frames. The variable friction control type oscillating damper is characterized in that a top rod is arranged in an inner cavity of the tapered wedge body; the upper end of the top rod is connected with the top part of the tapered wedge body through a fastening assembly; the lower end of the top rod passes through a through hole formed by the swing bolster, and a circular boss is arranged at the lower end of the top rod; a tapered wedge inner spring is sleeved on the top rod; the upper end of the tapered wedge inner spring props against the top of the inner cavity of the tapered wedge body; and the lower end of the tapered wedge inner spring props against the platform at the position of the end dent of the swing bolster. Owing to the mechanical property of the tapered wedge inner spring, the circular boss on the top rod is detached from the upper end of the oscillation damping spring assembly in an unloaded state, while propping against the upper end of the oscillation damping spring assembly in a loaded state. The variable friction control type oscillating damper has the characteristics of low abrasion loss, stable oscillation damping performance and large diamond resistant rigidity.
Description
Technical field
The present invention relates to the shock attenuation unit on railway freight car bogie, refer to particularly a kind of variable friction control type oscillating damper of rail wagon.
Background technology
At present, the most frequently used damping element of railway goods train bogie is snubber, and snubber is generally to consist of wedge and damper spring, the direction of its application force always with the opposite direction of train motion, play a part to stop vibration.The mode of the vibration damping resistance of snubber directly affects the vibration performance of train, by the drag characteristic of vibration damping, can be divided into and become friction Wedge-type shock absorber and two kinds of normal friction Wedge-type shock absorbers.
The wedge hypotenuse that becomes friction Wedge-type shock absorber embeds in the webge slot of bolster end, vertical edge is pressed on the wearing plate of side frame column, voussoir is seated on damper spring, damper spring is seated on bogie side frame central spring cushion cap face, voussoir is heave and set along with the up-and-down movement of bolster, damper spring also produces different amount of compressions thereupon and gives the pressure of voussoir to change, thereby makes to have the friction force changing with bolster up-and-down movement between the wearing plate of wedge and side frame column.The quiet positive pressure of each friction face can correspondingly increase or reduce along with the magnitude of load on bolster, and its vibration damping resistance under sky, loaded vehicle state is different.The shortcoming of this shock absorber is that its area of friction surface is less, and compressive load per unit area is larger, causes friction face abrasion excessive velocities, and degree of utilization is low, and the diamond resistant rigidity providing for bogie truck is less.In addition, the pre-amount of deflection of damper spring is less, and friction face abrasion back wedge can rise by relative bolster, and the pre-amount of deflection of damper spring reduces thereupon, causes friction damping power descending speed very fast, and cushioning performance is unstable.
Normal friction Wedge-type shock absorber is that with the difference that becomes friction Wedge-type shock absorber damper spring is seated on the damper spring cushion cap face of bolster, its amount of compression does not change with the up-and-down movement of bolster, in bogie truck vibration processes, the main friction face of voussoir and the friction drag between the wearing plate of side frame column are maintained a constant, with the load change on damper spring, do not change.Normal friction Wedge-type shock absorber has two major defects: one, and in order to take into account the cushioning performance of sky, loaded vehicle, while conventionally making empty wagons, damping force is excessive, and during loaded vehicle, damping force is too small, and cushioning performance is not good.Its two, although its voussoir is wider, abrasion area larger, increased diamond resistant rigidity, but still there is the space of raising.
The performance of railway truck shock absorber directly has influence on the dynamics of train, even be related to traffic safety, those skilled in the art are attempting solve to become friction Wedge-type shock absorber abrasion excessive velocities always, cushioning performance is unstable, diamond resistant rigidity is little and the Wedge-type shock absorber that often rubs into taking into account sky, loaded vehicle state causes the not good deficiency of cushioning performance, but make slow progress up to now.
Summary of the invention
Object of the present invention is exactly that the variable friction control type oscillating damper of rail wagon that a kind of abrasion loss is little, cushioning performance stable, diamond resistant rigidity is large will be provided.
For achieving the above object, the variable friction control type oscillating damper of rail wagon that the present invention is designed, comprise wedge body and damping spring component is thereunder set, described wedge body is arranged on the end recess that bolster forms, the side frame column friction plate laminating that the main friction face of described wedge body forms with bogie side frame contacts, the sleeper-swing eight-surface measuring laminating that the Auxiliary friction surface of described wedge body forms with bolster contacts, the lower end of described damping spring component is fixed on the central square frame spring bearing platform of bogie side frame composition, its special character is: in the inner chamber of described wedge body, be provided with push rod, the upper end of described push rod is connected with the top of wedge body by fastening assembly, the through hole that the lower end of described push rod forms through bolster, and the lower end of described push rod is provided with annular boss, on described push rod, be also set with spring in wedge, in described wedge, the upper end of spring is connected to the inner cavity top of wedge body, and in described wedge, the lower end of spring is connected on the end recess platform of bolster composition.In described wedge the mechanical property of spring guarantee that annular boss on push rod departs from the upper end of damping spring component under complete vehicle curb condition and under loaded vehicle state with the upper end butt of damping spring component.
Further, the main friction face width of described wedge body is preferably at 200mm < L≤340mm, preferably L=240～260mm.The drift angle of described wedge body is preferably in α=20～28 °, preferably α=24～26 °.Wedge body adopts the version of above-mentioned large width, little drift angle, can strengthen the resistance to abrasion of its friction face, improves the diamond resistant rigidity of bogie truck.
Principle of work of the present invention is such: due to the effect of spring in wedge, in the up-down vibration process forming at bolster, wedge body forms without relative motion with bolster all the time.During empty wagons, bogie truck bearing spring amount of compression is less, bolster forms in bogie side frame central square frame in a higher position, now the upper end of the annular boss on push rod and damping spring component departs from, the damping force of bogie truck is provided by spring in the wedge being set with on push rod completely, can rigidity and the pre-amount of deflection of spring in wedge be set according to actual conditions, to meet the damping force needs of empty wagons.During loaded vehicle, the load that bolster forms increases, bogie truck bearing spring compression quantitative change is large, bolster composition moves down, annular boss on push rod and damping spring component upper end butt, the damping spring component that now damping force of bogie truck is fixed on the central square frame spring bearing platform that bogie side frame forms by spring and lower end in the wedge being set with on push rod provides jointly, can rigidity and the pre-amount of deflection of damping spring component be set according to actual conditions, to meet the damping force needs of loaded vehicle.
The invention has the advantages that: designed controllable type shock absorber can be selected the presentation mode of damping force automatically according to the service condition of railway truck empty wagons or loaded vehicle make bogie truck no matter at empty wagons, still under loaded vehicle state, all there is suitable damping force.Meanwhile, can effectively improve the resistance to abrasion of shock absorber, guarantee the reliable and stable of cushioning performance.And, by wedge body being adopted to the design of large width, little drift angle, can significantly increase the diamond resistant rigidity of bogie truck.
Accompanying drawing explanation
Fig. 1 is that a kind of variable friction control type oscillating damper of rail wagon is at the sectional structure schematic diagram of wedge body midline.
Fig. 2 is that shock absorber shown in Fig. 1 is at the sectional structure schematic diagram at wedge body Auxiliary friction surface place.
Fig. 3 is the perspective view of wedge body in Fig. 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, be convenient to be well understood to the present invention, but they do not form restriction to the present invention.
Variable friction control type oscillating damper of rail wagon shown in figure, mainly consists of wedge body 2 and the damping spring component 7 that is arranged on wedge body 2 belows.The lower end of damping spring component 7 is fixed on the central square frame spring bearing platform of bogie side frame composition 1.Wedge body 2 adopts the version of large width, little drift angle, its main friction face width L=260mm, apex angle α=24 ° of wedge body 2.Wedge body 2 is arranged on bolster and forms 3 end recess, and the main friction face of wedge body 2 contacts with the side frame column friction plate 1a laminating of bogie side frame composition 1, and the Auxiliary friction surface of wedge body 2 contacts with the sleeper-swing eight-surface measuring 3a laminating of bolster composition 3.In the inner chamber of wedge body 2, be provided with push rod 4, the upper end of push rod 4 is connected with the top of wedge body 2 by the fastening assembly 5 consisting of nut, packing ring and lock pin, the lower end of push rod 4 forms the through hole 3b on 3 through bolster, and its lower end is provided with annular boss 4a.On push rod 4, be also set with spring 6 in wedge, in wedge, the upper end of spring 6 is connected to the inner cavity top of wedge body 2, and in wedge, the lower end of spring 6 is connected on the end recess platform of bolster composition 3.In wedge the mechanical property of spring 6 guarantee that annular boss 4a on push rod 4 departs from the upper end of damping spring component 7 under complete vehicle curb condition and under loaded vehicle state with the upper end butt of damping spring component 7.
The present invention is when complete vehicle curb condition, and the annular boss 4a on push rod 4 and the upper end of damping spring component 7 depart from, and the damping force of bogie truck is provided by spring 6 in the wedge of suit on push rod 4.During loaded vehicle state, the load that bolster forms on 3 increases, and wedge body 2 drives push rod 4 to move down, annular boss 4a and damping spring component 7 upper end butts, and the damping force of bogie truck is provided jointly by spring 6 and damping spring component 7 in the wedge of suit on push rod 4.
The present invention can select the damping force presentation mode of railway truck automatically according to service condition empty, loaded vehicle, reduces wedge body friction face abrasion speed, guarantees the stable of cushioning performance, and can significantly increase the diamond resistant rigidity of railway goods train bogie.
Claims (4)
1. a variable friction control type oscillating damper of rail wagon, comprise wedge body (2) and damping spring component (7) is thereunder set, described wedge body (2) is arranged on the end recess that bolster forms (3), the main friction face of described wedge body (2) contacts with side frame column friction plate (1a) laminating that bogie side frame forms (1), the Auxiliary friction surface of described wedge body (2) contacts with sleeper-swing eight-surface measuring (3a) laminating that bolster forms (3), the lower end of described damping spring component (7) is fixed on the central square frame spring bearing platform of bogie side frame composition (1), it is characterized in that: in the inner chamber of described wedge body (2), be provided with push rod (4), the upper end of described push rod (4) is connected with the top of wedge body (2) by fastening assembly (5), the lower end of described push rod (4) forms the through hole (3b) on (3) through bolster, and the lower end of described push rod (4) is provided with annular boss (4a), on described push rod (4), be also set with spring (6) in wedge, in described wedge, the upper end of spring (6) is connected to the inner cavity top of wedge body (2), and in described wedge, the lower end of spring (6) is connected on the end recess platform of bolster composition (3), in described wedge the mechanical property of spring (6) guarantee that annular boss (4a) on push rod (4) departs from the upper end of damping spring component (7) under complete vehicle curb condition and under loaded vehicle state with the upper end butt of damping spring component (7).
2. variable friction control type oscillating damper of rail wagon according to claim 1, it is characterized in that: the main friction face width 200mm < L≤340mm of described wedge body (2), apex angle α=20～28 ° of described wedge body (2).
3. variable friction control type oscillating damper of rail wagon according to claim 2, is characterized in that: the main friction face width L=240～260mm of described wedge body (2), apex angle α=24～26 ° of described wedge body (2).
4. according to the variable friction control type oscillating damper of rail wagon described in claim 1 or 2 or 3, it is characterized in that: described fastening assembly (5) consists of nut, packing ring and lock pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010738.7A CN102556098B (en) | 2012-01-13 | 2012-01-13 | Variable friction control type oscillating damper of rail wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010738.7A CN102556098B (en) | 2012-01-13 | 2012-01-13 | Variable friction control type oscillating damper of rail wagon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102556098A CN102556098A (en) | 2012-07-11 |
| CN102556098B true CN102556098B (en) | 2014-12-03 |
Family
ID=46403099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210010738.7A Active CN102556098B (en) | 2012-01-13 | 2012-01-13 | Variable friction control type oscillating damper of rail wagon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102556098B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612645B (en) * | 2013-11-27 | 2016-04-06 | 齐齐哈尔轨道交通装备有限责任公司 | Bolster, bolster damping assembly and bogie truck |
| CN103625495B (en) * | 2013-12-20 | 2016-05-04 | 济南轨道交通装备有限责任公司 | A kind of hanging vibration damping bogie of frictional force that becomes |
| CN104118447B (en) * | 2014-07-24 | 2016-09-28 | 济南轨道交通装备有限责任公司 | A kind of truck damping device mounting process |
| CN106476833B (en) * | 2016-10-18 | 2019-05-07 | 张家港特锐机械制造有限公司 | Truck damping system with compensation |
| CN109094595B (en) * | 2018-10-09 | 2020-08-21 | 中车眉山车辆有限公司 | Railway wagon bogie vibration damping device capable of providing composite vibration damping force |
| AU2019470817C1 (en) * | 2019-10-22 | 2024-06-27 | National Steel Car Limited | Railroad car truck damper wedge fittings |
| CN113581238B (en) * | 2021-07-29 | 2022-12-20 | 中车齐齐哈尔车辆有限公司 | Vibration damping structure of vehicle, bogie and vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2373508A (en) * | 1941-02-07 | 1945-04-10 | Thompson Prod Inc | Shock absorber |
| GB765414A (en) * | 1954-03-04 | 1957-01-09 | Buckeye Steel Castings Co | Spring group and damping mechanism |
| US2974610A (en) * | 1958-10-23 | 1961-03-14 | American Steel Foundries | Snubbed bolster truck |
| US3977332A (en) * | 1975-06-25 | 1976-08-31 | Standard Car Truck Company | Variably damped truck |
| US5524551A (en) * | 1994-08-23 | 1996-06-11 | Amsted Industries Incorporated | Spring-pack assembly for a railway truck bolster assembly |
| CN101830234A (en) * | 2010-04-27 | 2010-09-15 | 南车长江车辆有限公司 | Oblique wedge vibration damper for railway freight car bogie |
| CN202413823U (en) * | 2012-01-13 | 2012-09-05 | 南车长江车辆有限公司 | Variable friction control type damper for railroad wagon |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070164531A1 (en) * | 2006-01-13 | 2007-07-19 | Bryant Peter E | Method and apparatus for rebound control |
| JP4654283B2 (en) * | 2008-09-17 | 2011-03-16 | 株式会社日立製作所 | Brake device, hoisting machine and elevator using the same |
-
2012
- 2012-01-13 CN CN201210010738.7A patent/CN102556098B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2373508A (en) * | 1941-02-07 | 1945-04-10 | Thompson Prod Inc | Shock absorber |
| GB765414A (en) * | 1954-03-04 | 1957-01-09 | Buckeye Steel Castings Co | Spring group and damping mechanism |
| US2974610A (en) * | 1958-10-23 | 1961-03-14 | American Steel Foundries | Snubbed bolster truck |
| US3977332A (en) * | 1975-06-25 | 1976-08-31 | Standard Car Truck Company | Variably damped truck |
| US5524551A (en) * | 1994-08-23 | 1996-06-11 | Amsted Industries Incorporated | Spring-pack assembly for a railway truck bolster assembly |
| CN101830234A (en) * | 2010-04-27 | 2010-09-15 | 南车长江车辆有限公司 | Oblique wedge vibration damper for railway freight car bogie |
| CN202413823U (en) * | 2012-01-13 | 2012-09-05 | 南车长江车辆有限公司 | Variable friction control type damper for railroad wagon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102556098A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102556098B (en) | Variable friction control type oscillating damper of rail wagon | |
| US7174837B2 (en) | Three-piece motion control truck system | |
| EP2123534B1 (en) | Railroad freight car sidebearing | |
| US5524551A (en) | Spring-pack assembly for a railway truck bolster assembly | |
| KR100724923B1 (en) | Damping system for rail car truck and method of designing rail car truck | |
| CN100471748C (en) | Device and method for suspending a vehicle cabin | |
| CN203477152U (en) | Friction shock absorber for bogie of railway freight car and bogie of railway freight car | |
| KR100869355B1 (en) | Apparatus for shock absorption by using the leverage | |
| CN202413823U (en) | Variable friction control type damper for railroad wagon | |
| RU2674394C1 (en) | Group of springs of the friction wedge trolley of the railway car | |
| US7263930B2 (en) | Railway truck suspension design | |
| WO2011134264A1 (en) | Inclined wedge vibration reduction device for railway freight car bogie | |
| CN202508105U (en) | High-stability rail wagon bogie | |
| CN109094595B (en) | Railway wagon bogie vibration damping device capable of providing composite vibration damping force | |
| US3464366A (en) | Hydraulically dampened railway truck bolster | |
| CN111976771B (en) | Inclined wedge and swing bolster elastic connection vibration damping device for railway wagon bogie and bogie | |
| CN108216285A (en) | Bogies for railway vehicles friction shoe | |
| EP3135553B1 (en) | Method to prevent rupture of steel spring | |
| JP2005537972A (en) | Bogie for rail vehicles | |
| CN201980244U (en) | Bogie of wagon | |
| CN209037580U (en) | A kind of railway goods train bogie vibration absorber can provide combined vibration-damping power | |
| WO2016063382A1 (en) | Railway car | |
| CN206984001U (en) | Railway goods train bogie | |
| CN208169400U (en) | damper buffer block and automobile | |
| EP3617030A1 (en) | Railway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |