CN212796885U - Spring seat with backstop and primary spring damping device - Google Patents
Spring seat with backstop and primary spring damping device Download PDFInfo
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- CN212796885U CN212796885U CN202021094336.6U CN202021094336U CN212796885U CN 212796885 U CN212796885 U CN 212796885U CN 202021094336 U CN202021094336 U CN 202021094336U CN 212796885 U CN212796885 U CN 212796885U
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Abstract
The utility model relates to a spring holder with backstop, include: the rigid stop device comprises a base plate, an elastic rubber body and an upper cover plate, wherein a rigid stop is arranged on the upper cover plate, a variable-rigidity elastic stop is arranged in the rigid stop, and the elastic stop force of the variable-rigidity elastic stop is greatly increased before the rigid stop plays a stop role by utilizing the variable-rigidity characteristic that the rigidity of the variable-rigidity elastic stop is obviously increased along with the increase of the compression amount, so that the problems of collision force when the rigid stop plays a stop role and protection of the rigid stop from being damaged by the collision force are solved. The utility model discloses still relate to a spring damping device, include: spring, upper spring seat and lower spring seat. At least one of the upper spring seat and the lower spring seat adopts the spring seat with the variable-rigidity elastic stop, so that the impact force generated when the rigid stop acts as the stop is reduced, the reliability of the spring damping device system is improved, the driving safety is ensured, and the service life of the spring is prolonged.
Description
Technical Field
The utility model relates to a rail vehicle bogie technical field, concretely relates to spring holder and a spring damping device with backstop.
Background
The rubber pad is a commonly used rubber-metal composite damping element, is arranged between an axle box and a framework, connects a bogie and the axle box, plays a role in guiding wheel sets and transferring traction force and braking force of the wheel sets, is matched with a steel spring for use, and is very commonly applied. The rubber pad has good vertical damping function, can provide certain horizontal, longitudinal rigidity simultaneously, reduces vibration and impact, improves rolling stock stationarity and security.
In the existing combination of the steel spring and the rubber pad, the rubber pad mainly has the effects of reducing the horizontal rigidity of the steel spring, obviously reducing the stress level of the steel spring and improving the reliability and durability of the steel spring. Under the full-load condition of vehicle, the vertical deformation of steel spring is very big, in order to protect the spring, prevent the spring fracture, adopts rigid backstop to carry out spacing to steel spring is vertical usually. However, when the rigid stopper is in operation, it is damaged by the impact force between the metals being too great. In order to reduce the impact force of the positive stop, a rubber pad or a spring damper is usually added to the positive stop. However, the stiffness of the rubber pad or the spring buffer is usually constant, and the effect of buffering the impact force is not ideal enough, so it is necessary to add a rubber stopper with variable stiffness on the rigid stopper to quickly increase the elastic stopper force before the rigid stopper acts, so as to reduce the impact force when the rigid stopper acts and protect the rigid stopper from being damaged by the impact.
Through patent retrieval, with the utility model discloses there is following patent mainly to have the patent of certain relation:
1. the invention discloses a Chinese invention patent with the application number of 201811203385.6, the application date of 2018.10.16, the publication number of CN 109131410A, the publication number of 2019.01.04, the name of a spring press-mounting device with a composite stop function and the application name of Chinese invention patent of 'Zhongche Ziyang locomotive Co., Ltd'. This structure is horizontal backstop function and vertical backstop function integration as a whole setting inside the spring coil, and the setting that has significantly reduced makes the structure of train bogie compacter in the outside required space of spring, also when the train emergency, can prevent that the spring from breaking away from safe position simultaneously.
2. The utility model provides a utility model patent of "the railway vehicle bogie and single pull rod type primary suspension structure", applicant for "the railway vehicle bogie and single pull rod type primary suspension structure", the utility model provides a railway vehicle bogie and single pull rod type primary suspension structure thereof, the application number is "CN 201420559352.6", the application date is "2014.09.26", the publication number is "CN 204137009U", the publication date is "2015.02.04", this utility model provides a single pull rod type primary suspension structure thereof, single pull rod type primary suspension structure includes framework, axle box, primary spring and primary vertical backstop, is provided with guide slot and first locating hole on the framework; a stop mounting platform is arranged on the axle box; the primary spring comprises a primary spring seat and a steel spring group, one end of the primary spring seat is provided with a limiting bulge limited in the first positioning hole, and the other end of the primary spring seat is provided with a stop guide pillar; the first buffer cushion is arranged between the upper cover plate and the first spring seat, and is sleeved on the limiting bulge; the second blotter, the axle box is provided with the mounting groove on being close to the terminal surface of upper cover plate, and the second blotter setting is in the mounting groove, and the one end of steel spring group offsets with one being the spring holder, and the other end offsets with the second blotter. The utility model discloses an impact force that first blotter and second blotter can cushion a series of spring and receive to cushion the vertical vibration that a series of spring takes place, and then improved the life of a series of spring.
However, neither the spring system nor the vertical stopper system described above involves the problem of reducing the impact force of the rigid stopper and protecting the rigid stopper from damage due to the impact force.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the big defect of impact of the rigidity backstop that current spring rigidity backstop exists, provide a spring holder and a spring damping device with backstop.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does: a spring seat with a stop, comprising: the elastic stop is a variable-rigidity elastic stop, the top surface of the variable-rigidity elastic stop is higher than the top surface of the rigid stop, and the rigidity of the variable-rigidity elastic stop is increased along with the increase of the compression amount. The elastic stopping force of the variable-rigidity elastic stopping piece is sharply increased along with the increase of the compression amount, so that the problem that the rigid stopping piece is not damaged by the collision force when the rigid stopping piece is used for starting and stopping is solved.
Furthermore, the bottom of the elastic stopping seat is provided with a vent hole, so that gas in the elastic stopping seat can be conveniently discharged.
Further, the variable stiffness elastomeric stop comprises: the elastic stopping head, the elastic stopping body and the elastic stopping bottom; the elastic stopping head is in a circular truncated cone shape, and the elastic stopping body and the elastic stopping bottom are cylinders. Because the top of the elastic stop head in the shape of a truncated cone is smaller, the smaller top is compressed firstly during compression. Since the required compression force is proportional to the square of the radius of the quilt portion, as the compression amount increases, the compressed diameter increases, and the required compression force can be obviously increased, namely, the rigidity changing effect of increasing the rigidity along with the compression amount is realized.
Further, the elastic stop bottom is provided with a cavity so as to reduce the rigidity when the elastic stop bottom is just compressed and increase the rigidity changing effect.
Further, the cavity is a hemisphere or a cone.
Furthermore, the bottom plate, the elastic rubber body and the upper cover plate are integrally molded through vulcanization, so that parts are reduced, the assembly process is simplified, and the installation is facilitated.
Furthermore, the variable-rigidity elastic stop block and the elastic stop block seat are of a split structure, so that different variable-rigidity elastic stop blocks can be selected according to actual needs.
Further, the variable-rigidity elastic stop block and the elastic stop block seat are integrally formed through vulcanization, so that parts are reduced, the assembly process is simplified, and the installation is facilitated.
The utility model discloses still relate to a spring vibration damper, include: spring, upper spring seat and lower spring seat. At least one of the upper spring seat and the lower spring seat is provided with the spring seat with the variable-rigidity elastic stop. The characteristic that the elastic stopping force of the variable-rigidity elastic stopping spring seat is increased along with the increase of the compression amount is utilized to reduce the collision force when the rigid stopping is started and stopped and protect the rigid stopping from being damaged by the collision force.
Further, the spring comprises an outer ring spring and an inner ring spring, the inner ring spring is arranged in the outer ring spring, the rotating direction of the inner ring spring is opposite to that of the outer ring spring, and the variable-stiffness elastic stop catch penetrates into the inner space of the inner ring spring. The combined spring comprising the outer ring spring and the inner ring spring is compact in structure and larger in spring force.
The utility model has the advantages that: the rigid stop is arranged on the spring seat, the variable-rigidity elastic stop is arranged in the rigid stop, and the elastic stop force of the variable-rigidity elastic stop is greatly increased before the rigid stop plays a stop role by utilizing the variable-rigidity characteristic that the rigidity of the variable-rigidity elastic stop is obviously increased along with the increase of the compression amount, so that the problem that the rigid stop is not damaged by the collision force when the rigid stop plays the stop role is solved. The utility model discloses still relate to a series of spring damping device who adopts above-mentioned variable rigidity elasticity backstop spring holder, include: spring, upper spring seat and lower spring seat. At least one of the upper spring seat and the lower spring seat is provided with the spring seat with the variable-rigidity elastic stop. The reliability of the spring vibration damper system is improved, the driving safety is ensured, and the service life of the spring is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a spring seat;
FIG. 2 is a cross-sectional structural view of an embodiment of a variable stiffness elastomeric stop;
FIG. 3 is a schematic cross-sectional view of a variable stiffness elastomer stop according to an embodiment;
FIG. 4 is a schematic cross-sectional structural view of a spring seat with a variable stiffness elastomeric stop;
FIG. 5 is a schematic cross-sectional view of the spring seat after the stiffening spring stop is compressed;
FIG. 6 is a schematic cross-sectional view of a spring damper under normal load in accordance with an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of an embodiment of a spring damper device in an overload condition;
FIG. 8 is a schematic cross-sectional view of an embodiment of a spring damper assembly at a limit load;
FIG. 9 is a schematic cross-sectional view of a spring damper under normal load according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a spring damping device with a limited loading.
In the figure: the damping device comprises a spring seat 1, a spring seat 11, a bottom plate 12, a rubber pad 12, a cover plate 13, a spring fixing ring 14, a rigid stop 15, a rigid stop top surface 16, an elastic stop seat 17, an exhaust hole 18, a variable-rigidity elastic stop 2, an elastic stop head 21, an elastic stop body 22, an elastic stop bottom 21, an outer ring spring 3, an inner ring spring 4, a top plate 5, a variable-rigidity elastic stop higher than the rigid stop height, and a compression height of a primary spring damping device from normal load compression to the rigid stop starting and stopping action.
Detailed Description
The invention will be further described by means of specific embodiments and with reference to the accompanying drawings:
as shown in fig. 1: a spring seat with a variable stiffness elastomeric stop, comprising: the bottom plate 11, the rubber pad 12 and the upper cover plate 13 are sequentially overlapped, the bottom plate 11 and the upper cover plate 13 are metal pieces, and the bottom plate 11, the rubber pad 12 and the upper cover plate 13 are integrally molded through vulcanization. The upper cover plate 13 is provided with a rigid stopping block 15, an elastic stopping seat 17 is arranged in the rigid stopping block 15, the elastic stopping block is arranged in the elastic stopping seat 17, and a vent hole 18 is formed in the bottom of the elastic stopping seat 17, so that gas in the elastic stopping seat 17 can be conveniently discharged. The bottom plate 11, the elastic rubber body 12 and the upper cover plate 13 are integrally molded through vulcanization, so that parts are reduced, the assembly process is simplified, and the installation is facilitated.
Fig. 2 shows an embodiment of the variable-stiffness elastic stopper 2: the variable-stiffness elastic stopper 2 includes: an elastic stopping head 21, an elastic stopping body 22 and an elastic stopping bottom 23; the elastic stopping head 21 is in a circular truncated cone shape, and a step is arranged on the elastic stopping head 21. The elastic stopping body 22 and the elastic stopping bottom 23 are cylinders. Since the dome-shaped resilient stopper 21 has a smaller tip, the smaller tip is compressed first during compression. Since the required compression force is proportional to the square of the radius of the compressed part, as the compression amount increases, the compressed diameter increases, and the required compression force can be obviously increased, namely, the rigidity changing effect of increasing the rigidity along with the compression amount is realized. A cavity 24 is provided in the elastic stop bottom 23, and the cavity 24 is semicircular.
The second embodiment of the variable-stiffness elastic stop 2 is shown in fig. 3: the elastic stopping head 21 is in a circular truncated cone shape, and the cavity 24 of the elastic stopping bottom 23 is a cone.
As shown in fig. 4 to 5: the variable-rigidity elastic stop 2 is arranged on the elastic stop seat 17. The top surface of the variable stiffness elastic stop 2 is higher than the top surface 16 of the rigid stop by a height a, so that before the rigid stop 15 generates the stopping action, the variable stiffness elastic stop 2 generates an elastic stopping force to reduce the collision force generated when the rigid stop 15 generates the stopping action.
The variable-rigidity elastic stop catch 2 and the elastic stop catch seat 17 adopt a split structure, so that different variable-rigidity elastic stop catches 2 can be selected according to actual needs. The variable-rigidity elastic stop 2 and the elastic stop seat 17 are integrally molded through vulcanization, so that parts are reduced, the assembly process is simplified, and the installation is facilitated.
The variable-rigidity elastic stop 2 adopts a circular truncated cone-shaped elastic stop head 21, so that the rigidity of the variable-rigidity elastic stop 2 is increased along with the increase of the compression amount.
At the same time, when the variable stiffness elastomer stop 2 starts to be compressed, the cavity 24 is compressed first, and the air in the cavity 24 is exhausted through the exhaust hole 18, and the stiffness of the variable stiffness elastomer stop 2 is smaller. The rigidity of the variable-rigidity elastic stop is increased continuously as the cavity 24 is compressed continuously, and after the cavity 24 is compressed completely, the rigidity of the variable-rigidity elastic stop 2 is increased remarkably due to the limitation of the bottom of the elastic stop seat 17, the required compression force is increased remarkably, and therefore the variable-rigidity effect is further increased for the cavity 24 arranged on the elastic stop bottom 23.
As shown in fig. 6 to 8: the compression process using the first embodiment of the variable stiffness elastomeric stop described above is shown. The method comprises the following steps: spring seat 1, outer coil spring 3, inner coil spring 4 and top plate 5. The spring seat 1 is provided with a rigid stop 15, an elastic stop seat 17 is arranged in the rigid stop 15, and a variable-rigidity elastic stop 2 is arranged in the elastic stop seat 17. The inner ring spring 4 is arranged in the outer ring spring 3, the rotating direction of the inner ring spring 4 is opposite to that of the outer ring spring 3, and the variable-stiffness elastic stop 2 extends into the inner space of the inner ring spring 4.
Under normal load, the height h between the top plate 5 and the rigid stopper 15 is set to h, and as the load increases, the outer coil spring 3 and the inner coil spring 4 are compressed, and the height h between the top plate 5 and the rigid stopper 15 decreases accordingly. When the height h between the top plate 5 and the rigid stopper 15 is compressed to a, the top surface of the variable stiffness elastic stopper 2 contacts the top plate 5, at this time, the variable stiffness elastic stopper 2 starts to be compressed, and the elastic stopping force of the variable stiffness elastic stopper 2 is increased sharply along with the increase of the compressed amount, so that the collision force generated when the rigid stopper 15 acts as a stopper is reduced, and the rigid stopper is protected from being damaged by the collision force.
As shown in fig. 9 to 10: the compression process of the second embodiment using the variable stiffness elastomeric stop described above is shown. The method comprises the following steps: spring holder 1, outer lane spring 3 and the inner circle spring 4 that set up from top to bottom, be provided with rigidity backstop 15 on the spring holder 1, be provided with elasticity backstop seat 17 in rigidity backstop 15, be provided with variable rigidity elasticity backstop 2 in elasticity backstop seat 17.
During normal load, the height between the rigid stops 15 of the vertically arranged spring seats 1 is h, the outer ring spring 3 and the inner ring spring 4 are compressed along with the increase of the load, and the height h between the rigid stops 15 of the vertically arranged spring seats 1 is reduced along with the increase of the load. When the height h between the rigid stops 15 of the vertically arranged spring seats 1 is compressed to 2a, the top surfaces of the two opposite variable-rigidity elastic stops 2 are contacted, at the moment, the variable-rigidity elastic stops 2 start to be compressed, and the elastic stop force of the variable-rigidity elastic stops 2 is increased sharply along with the increase of the compressed amount, so that the collision force when the rigid stops 15 act as stops is reduced, and the rigid stops are protected from being damaged by the collision force.
In summary, the following steps: the utility model has the advantages that: the rigid stop is arranged on the spring seat, the variable-rigidity elastic stop is arranged in the rigid stop, and the elastic stop force of the variable-rigidity elastic stop is greatly increased before the rigid stop plays a stop role by utilizing the variable-rigidity characteristic that the rigidity of the variable-rigidity elastic stop is obviously increased along with the increase of the compression amount, so that the problem that the rigid stop is not damaged by the collision force when the rigid stop plays the stop role is solved. The utility model discloses still relate to a series of spring damping device who adopts above-mentioned variable rigidity elasticity backstop spring holder, include: spring, upper spring seat and lower spring seat. At least one of the upper spring seat and the lower spring seat is provided with the spring seat with the variable-rigidity elastic stop. The reliability of the spring vibration damper system is improved, the driving safety is ensured, and the service life of the spring is prolonged.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (10)
1. A spring seat with a stop, comprising: bottom plate (11), the elastic rubber body (12), upper cover plate (13), be provided with rigid backstop (15) on upper cover plate (13), be provided with elastic backstop seat (17) in rigid backstop (15), be provided with elastic backstop, its characterized in that in elastic backstop seat (17): the elastic stop is a variable-rigidity elastic stop (2), the top surface of the variable-rigidity elastic stop (2) is higher than the top surface (16) of the rigid stop, and the rigidity of the variable-rigidity elastic stop (2) is increased along with the increase of the compression amount.
2. The spring seat with stopper according to claim 1, wherein: the bottom of the elastic stop seat (17) is provided with a vent hole (18).
3. The spring seat with stopper according to claim 2, wherein: the variable-stiffness elastic stopper (2) comprises: the elastic stop head (21), the elastic stop body (22) and the elastic stop bottom (23); the elastic stopping head (21) is in a circular truncated cone shape, and the elastic stopping body (22) and the elastic stopping bottom (23) are cylinders.
4. The spring seat with stopper according to claim 3, wherein: the elastic stop bottom (23) is provided with a cavity (24).
5. The spring seat with stopper according to claim 4, wherein: the cavity (24) is a hemisphere or a cone.
6. The spring seat with stopper according to any one of claims 1 to 5, wherein: the bottom plate (11), the elastic rubber body (12) and the upper cover plate (13) are integrally molded through vulcanization.
7. The spring seat with stopper according to claim 6, wherein: the variable-rigidity elastic stop (2) and the elastic stop seat (17) adopt a split structure.
8. The spring seat with stopper according to claim 6, wherein: the variable-rigidity elastic stop catch (2) and the elastic stop catch seat (17) are integrally molded through vulcanization.
9. A spring tie dampening device comprising: spring, last spring holder and lower spring holder, its characterized in that: at least one of the upper spring seat and the lower spring seat is provided with the spring seat with the stopper as claimed in any one of claims 1 to 8.
10. A series of spring dampers according to claim 9 wherein: the spring comprises an outer ring spring (3) and an inner ring spring (4), the inner ring spring (4) is arranged in the outer ring spring (3), the rotating direction of the inner ring spring (4) is opposite to that of the outer ring spring (3), and the variable-stiffness elastic stop catch (2) penetrates into the inner space of the inner ring spring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021094336.6U CN212796885U (en) | 2020-06-15 | 2020-06-15 | Spring seat with backstop and primary spring damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021094336.6U CN212796885U (en) | 2020-06-15 | 2020-06-15 | Spring seat with backstop and primary spring damping device |
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| Publication Number | Publication Date |
|---|---|
| CN212796885U true CN212796885U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021094336.6U Active CN212796885U (en) | 2020-06-15 | 2020-06-15 | Spring seat with backstop and primary spring damping device |
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| CN (1) | CN212796885U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113602312A (en) * | 2021-07-20 | 2021-11-05 | 株洲时代瑞唯减振装备有限公司 | Method for preventing vertical stop in primary rubber pad set from falling off |
| CN113685490A (en) * | 2021-07-16 | 2021-11-23 | 株洲时代瑞唯减振装备有限公司 | Method for reducing deflection rigidity of rubber vibration damping pad |
-
2020
- 2020-06-15 CN CN202021094336.6U patent/CN212796885U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685490A (en) * | 2021-07-16 | 2021-11-23 | 株洲时代瑞唯减振装备有限公司 | Method for reducing deflection rigidity of rubber vibration damping pad |
| CN113685490B (en) * | 2021-07-16 | 2022-12-23 | 株洲时代瑞唯减振装备有限公司 | Method for reducing deflection rigidity of rubber vibration damping pad |
| CN113602312A (en) * | 2021-07-20 | 2021-11-05 | 株洲时代瑞唯减振装备有限公司 | Method for preventing vertical stop in primary rubber pad set from falling off |
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