CN202413823U - Variable friction control type damper for railroad wagon - Google Patents
Variable friction control type damper for railroad wagon Download PDFInfo
- Publication number
- CN202413823U CN202413823U CN2012200160416U CN201220016041U CN202413823U CN 202413823 U CN202413823 U CN 202413823U CN 2012200160416 U CN2012200160416 U CN 2012200160416U CN 201220016041 U CN201220016041 U CN 201220016041U CN 202413823 U CN202413823 U CN 202413823U
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- wedge
- wedge body
- spring
- push rod
- bolster
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Abstract
The utility model discloses a variable friction control type damper for a railroad wagon. The variable friction control type damper comprises a wedge body and a damping spring component arranged below the wedge body; the wedge body is arranged on an end recess of a swing bolster assembly; and the lower end of the damping spring component is fixed on a central square frame spring bearing platform consisting of side frames. The variable friction control type damper is characterized in that a mandril is arranged in an inner cavity of the wedge body; the upper end of the mandril is connected with the top of the wedge body through a fastening component; the lower end of the mandril passes through a through hole on the swing bolster assembly and is provided with an annular boss; the mandril is sleeved with a wedge internal spring; the upper end of the wedge internal spring is pressed against the top of the inner cavity of the wedge body; and the lower end of the wedge internal spring is pressed against a platform of the end recess of the swing bolster assembly. The mechanical property of the wedge internal spring can ensure that the annular boss on the mandril is separated from the upper end of the damping spring component in an idle state and is pressed against the upper end of the damping spring component in a loaded state. The variable friction control type damper has the characteristics of small abrasion loss, stable damping property, and high anti-warp stiffness.
Description
Technical field
The utility model relates to the shock attenuation unit on the railway freight car bogie, refers to that particularly a kind of railway truck becomes friction controllable type shock absorber.
Background technology
At present, the most frequently used damping element of railway goods train bogie is a snubber, and snubber generally is to be made up of wedge and damper spring, and the direction of its application force is in the opposite direction with train movement always, plays a part to stop vibration.The mode of the vibration damping resistance of snubber directly influences the vibration performance of train, can be divided into by the drag characteristic of vibration damping becoming 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 the damper spring, and damper spring is seated on the bogie side frame central authorities spring cushion cap face, and voussoir is heave and set along with the up-and-down movement of bolster; Damper spring also produces the different compression amount thereupon and gives the pressure of voussoir to change, and has the friction force that changes with the bolster up-and-down movement thereby make between the wearing plate of wedge and side frame column.The quiet positive pressure of each friction face can correspondingly increase along with the magnitude of load on the bolster or reduce, and its vibration damping resistance under sky, loaded vehicle state is different.The shortcoming of this shock absorber is that its friction face area is less, and compressive load per unit area is bigger, causes friction face abrasion excessive velocities, and degree of utilization is low, and the diamond resistant rigidity that provides for bogie truck is less.In addition, the preparatory amount of deflection of damper spring is less, and friction face abrasion back wedge can rise by relative bolster, and the preparatory 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; Friction drag in the bogie truck vibration processes between the wearing plate of the main friction face of voussoir and side frame column is maintained a constant, does not change with the load change on the damper spring.Normal friction Wedge-type shock absorber has two major defects: one of which, and in order to take into account the cushioning performance of sky, loaded vehicle, damping force is excessive when making empty wagons usually, and damping force is too small during loaded vehicle, and cushioning performance is not good.Its two, though its voussoir broad, abrasion area bigger, increased diamond resistant rigidity, but still had 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 attempting to solve always become friction Wedge-type shock absorber abrasion excessive velocities, cushioning performance is unstable, diamond resistant rigidity is little and often rub the Wedge-type shock absorber into take into account sky, the loaded vehicle state causes the not good deficiency of cushioning performance, but make slow progress up to now.
The utility model content
The purpose of the utility model is exactly to provide the railway truck that a kind of abrasion loss is little, cushioning performance stable, diamond resistant rigidity is big to become friction controllable type shock absorber.
For realizing above-mentioned purpose; The utility model institute design-calculated railway truck becomes friction controllable type shock absorber; Comprise wedge body and the damping spring component that is provided with thereunder, said wedge body is installed in the end recess that bolster is formed, and the main friction face of said wedge body is fitted with the side frame column friction plate that bogie side frame is formed and contacted; The secondary friction face of said wedge body is fitted with the bolster Eight characters face that bolster is formed and is contacted; The lower end of said damping spring component is fixed on the central square frame spring cushion cap of bogie side frame composition, and its special character is: be provided with push rod in the inner chamber of said wedge body, the upper end of said push rod links to each other with the top of wedge body through fastening assembly; The through hole that bolster is formed is passed in the lower end of said push rod, and the lower end of said push rod is provided with annular boss; Also be set with spring in the wedge on the said push rod, the upper end of spring is connected to the interior top of chamber of wedge body in the said wedge, and the lower end of spring is connected on the end recess platform of bolster in the said wedge.The mechanical property of spring guarantees that annular boss on the push rod breaks away from the upper end of damping spring component and under the loaded vehicle state and the upper end butt of damping spring component under complete vehicle curb condition in the said wedge.
Further, the main friction face width of said wedge body is preferably at 200mm＜L≤340mm, preferably L=240～260mm.The drift angle of said wedge body is preferably in α=20～28 °, preferably α=24～26 °.The wedge body adopts the version of above-mentioned big width, little drift angle, can strengthen the resistance to abrasion of its friction face, improves the diamond resistant rigidity of bogie truck.
The principle of work of the utility model is such: because the effect of spring in the wedge, in the up-down vibration process that bolster is formed, the wedge body is formed no relative motion with bolster all the time.During empty wagons; Bogie truck bearing spring amount of compression is less; The bolster composition is in a higher position in bogie side frame central authorities square frame, the upper end of annular boss on the push rod and damping spring component breaks away from this moment, and the damping force of bogie truck is provided by spring in the wedge of suit on the push rod fully; The rigidity and preparatory amount of deflection of spring in the wedge can be set, to satisfy the damping force needs of empty wagons according to actual conditions.During loaded vehicle; Load on bolster is formed increases, and bogie truck bearing spring compression quantitative change is big, and bolster moves down; Annular boss on the push rod and damping spring component upper end butt; This moment, the damping force of bogie truck was provided by the damping spring component that spring and lower end in the wedge of suit on the push rod are fixed on the central square frame spring cushion cap that bogie side frame forms jointly, the rigidity and the preparatory amount of deflection of damping spring component can be set, to satisfy the damping force needs of loaded vehicle according to actual conditions.
The advantage of the utility model is: institute's design-calculated controllable type shock absorber can be selected the presentation mode of damping force automatically according to the condition of service of railway truck empty wagons or loaded vehicle, makes bogie truck no matter still under the loaded vehicle state, all have suitable damping force at empty wagons.Simultaneously, can effectively improve the resistance to abrasion of shock absorber, guarantee the reliable and stable of cushioning performance.And,, can significantly increase the diamond resistant rigidity of bogie truck through the wedge body being adopted the design of big width, little drift angle.
Description of drawings
Fig. 1 is that a kind of railway truck becomes the sectional structure scheme drawing of friction controllable type shock absorber in wedge body midline.
Fig. 2 is the sectional structure scheme drawing of shock absorber shown in Figure 1 at the secondary friction face of wedge body place.
Fig. 3 is the perspective view of wedge body among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify, be convenient to be well understood to the utility model, but they do not constitute qualification to the utility model.
Railway truck shown in the figure becomes friction controllable type shock absorber, mainly is made up 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 cushion cap of bogie side frame composition 1.Wedge body 2 adopts the version of big width, little drift angle, its main friction face width L=260mm, the apex of wedge body 2=24 °.Wedge body 2 is installed in bolster and forms 3 end recess, and the main friction face of wedge body 2 is fitted with the side frame column friction plate 1a of bogie side frame composition 1 and contacted, and the secondary friction face of wedge body 2 is fitted with the bolster Eight characters face 3a of bolster composition 3 and contacted.In the inner chamber of wedge body 2, be provided with push rod 4; The upper end of push rod 4 is connected through the top of the fastening assembly that is made up of nut, packing ring and lock pin 5 with wedge body 2; The lower end of push rod 4 is passed bolster and is formed the through hole 3b on 3, and its lower end is provided with annular boss 4a.Also be set with spring 6 in the wedge on the push rod 4, the upper end of spring 6 is connected to the interior top of chamber of wedge body 2 in the wedge, and the lower end of spring 6 is connected on the end recess platform of bolster 3 in the wedge.The mechanical property of spring 6 guarantees that annular boss 4a on the push rod 4 breaks away from the upper end of damping spring component 7 and under the loaded vehicle state and the upper end butt of damping spring component 7 under complete vehicle curb condition in the wedge.
The utility model is when complete vehicle curb condition, and the annular boss 4a on the push rod 4 and the upper end of damping spring component 7 break away from, and the damping force of bogie truck is provided by spring 6 in the wedge of suit on the push rod 4.During the loaded vehicle state, the load that bolster is formed on 3 increases, and wedge body 2 drives push rod 4 and moves down, annular boss 4a and damping spring component 7 upper end butts, and the damping force of bogie truck is provided by spring in the wedge of suit on the push rod 46 and damping spring component 7 jointly.
The utility model can be selected the damping force presentation mode of railway truck automatically according to condition of service 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 railway truck becomes friction controllable type shock absorber; Comprise wedge body (2) and damping spring component (7) thereunder is set; Said wedge body (2) is installed in the end recess that bolster is formed (3); The main friction face of said wedge body (2) contacts with side frame column friction plate (1a) applying that bogie side frame is formed (1); The secondary friction face of said wedge body (2) contacts with bolster Eight characters face (3a) applying that bolster is formed (3); The lower end of said damping spring component (7) is fixed on bogie side frame to be formed on the central square frame spring cushion cap of (1), it is characterized in that: be provided with push rod (4) in the inner chamber of said wedge body (2), the upper end of said push rod (4) links to each other with the top of wedge body (2) through fastening assembly (5); The lower end of said push rod (4) is passed bolster and is formed the through hole (3b) on (3), and the lower end of said push rod (4) is provided with annular boss (4a); Also be set with spring (6) in the wedge on the said push rod (4), the upper end of spring (6) is connected to the interior top of chamber of wedge body (2) in the said wedge, and the lower end of spring (6) is connected on the end recess platform of bolster (3) in the said wedge; The mechanical property of spring (6) guarantees that annular boss (4a) on the push rod (4) breaks away from the upper end of damping spring component (7) and under the loaded vehicle state and the upper end butt of damping spring component (7) under complete vehicle curb condition in the said wedge.
2. railway truck according to claim 1 becomes friction controllable type shock absorber, it is characterized in that: the main friction face width 200mm＜L≤340mm of said wedge body (2), apex=20～28 of said wedge body (2) °.
3. railway truck according to claim 2 becomes friction controllable type shock absorber, it is characterized in that: the main friction face width L=240～260mm of said wedge body (2), apex=24～26 of said wedge body (2) °.
4. become friction controllable type shock absorber according to claim 1 or 2 or 3 described railway trucks, it is characterized in that: said fastening assembly (5) is made up of nut, packing ring and lock pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200160416U CN202413823U (en) | 2012-01-13 | 2012-01-13 | Variable friction control type damper for railroad wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200160416U CN202413823U (en) | 2012-01-13 | 2012-01-13 | Variable friction control type damper for railroad wagon |
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| Publication Number | Publication Date |
|---|---|
| CN202413823U true CN202413823U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200160416U Expired - Lifetime CN202413823U (en) | 2012-01-13 | 2012-01-13 | Variable friction control type damper for railroad wagon |
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| CN (1) | CN202413823U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556098A (en) * | 2012-01-13 | 2012-07-11 | 南车长江车辆有限公司 | Variable friction control type oscillating damper of rail wagon |
| CN104118447A (en) * | 2014-07-24 | 2014-10-29 | 济南轨道交通装备有限责任公司 | Steering frame vibration absorber installation process |
| CN107244332A (en) * | 2017-07-24 | 2017-10-13 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
| CN107253483A (en) * | 2017-07-24 | 2017-10-17 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
| CN107323477A (en) * | 2017-07-24 | 2017-11-07 | 中车齐齐哈尔车辆有限公司 | A kind of railway goods train bogie assemble method |
-
2012
- 2012-01-13 CN CN2012200160416U patent/CN202413823U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556098A (en) * | 2012-01-13 | 2012-07-11 | 南车长江车辆有限公司 | Variable friction control type oscillating damper of rail wagon |
| CN102556098B (en) * | 2012-01-13 | 2014-12-03 | 南车长江车辆有限公司 | Variable friction control type oscillating damper of rail wagon |
| CN104118447A (en) * | 2014-07-24 | 2014-10-29 | 济南轨道交通装备有限责任公司 | Steering frame vibration absorber installation process |
| 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 |
| CN107244332A (en) * | 2017-07-24 | 2017-10-13 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
| CN107253483A (en) * | 2017-07-24 | 2017-10-17 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
| CN107323477A (en) * | 2017-07-24 | 2017-11-07 | 中车齐齐哈尔车辆有限公司 | A kind of railway goods train bogie assemble method |
| CN107253483B (en) * | 2017-07-24 | 2023-11-21 | 中车齐齐哈尔车辆有限公司 | Railway wagon bogie |
| CN107244332B (en) * | 2017-07-24 | 2023-11-21 | 中车齐齐哈尔车辆有限公司 | Railway wagon bogie |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20141203 |
|
| RGAV | Abandon patent right to avoid regrant |