CN212657180U

CN212657180U - Vibration damping wheel

Info

Publication number: CN212657180U
Application number: CN202020600839.XU
Authority: CN
Inventors: 杨明; 丁衡俊
Original assignee: Cnc Driveline Technology Co ltd
Current assignee: Cnc Driveline Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-03-05
Anticipated expiration: 2030-04-21

Abstract

The application discloses damping wheel includes: the device comprises a shell, a grooved wheel, a hub, a shifting fork, two spring assemblies and a rubber damping disc; the shell is covered on the grooved pulley, and an annular cavity channel for accommodating the spring assembly is enclosed between the shell and the grooved pulley; the hub is rotatably arranged on the grooved wheel, and the first end facing the shell is synchronously and rotatably connected with the first side surface of the shifting fork in the same axial direction; two lugs extending into the annular cavity are symmetrically arranged on the shifting fork; the grooved wheel is symmetrically provided with two bosses corresponding to the lugs in the annular cavity; the rubber vibration damping disc is arranged on the second side surface of the shifting fork; the spring assembly comprises a first spring, a second spring and a connecting piece; the rigidity of the first spring is less than that of the second spring, and the first spring is connected with the second spring through a connecting piece; the connecting piece is used for isolating the acting force of the second spring on the first spring when the first spring is in the maximum compression state. Has better use stability and durability.

Description

Vibration damping wheel

Technical Field

The application relates to the technical field of vibration reduction, in particular to a vibration reduction wheel.

Background

The crankshaft of the automobile engine is a very important part, and the manufacturing process is complex and has high quality requirement. When the engine works, the vibration of the crankshaft is mainly the vibration in the torsional direction, and how to reduce the vibration of the crankshaft is one of the important contents of the design of the crankshaft of the engine. A common means for reducing crankshaft vibration is to mount a damper wheel at the front end of the crankshaft. With the increasing requirements of customers on the NVH performance and the comfort of a normal whole vehicle, the requirements on the stability and the NVH performance of an engine front end auxiliary driving system are also increased, so that the requirements on the use stability and the durability of the vibration damping wheel are also increased, but the conventional vibration damping wheel is difficult to meet the requirements.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application aims to provide a damper wheel with better use stability and durability.

To achieve the above technical object, the present application provides a damper wheel, including: the device comprises a shell, a grooved wheel, a hub, a shifting fork, two spring assemblies and a rubber damping disc;

the shell is covered on the grooved pulley, and an annular cavity channel for accommodating the spring assembly is formed by the shell and the grooved pulley;

the hub is rotatably mounted on the grooved wheel, and is synchronously and rotatably connected with the first side surface of the shifting fork in the same axial direction towards the first end of the shell;

two lugs extending into the annular cavity are symmetrically arranged on the shifting fork;

the grooved wheel is symmetrically provided with two bosses corresponding to the lugs in the annular cavity;

the rubber vibration reduction disc is arranged on the second side surface of the shifting fork and is synchronously and rotatably connected with the shifting fork in the same axial direction;

the first ends of the two spring assemblies are respectively contacted and abutted with the lug boss, the second ends of the two spring assemblies are respectively contacted and abutted with the lug boss, and each spring assembly comprises a first spring, a second spring and a connecting piece;

the rigidity of the first spring is less than that of the second spring, and the first spring is connected with the second spring through a connecting piece;

the connecting piece is used for isolating the acting force of the second spring on the first spring when the first spring is in the maximum compression state.

Further, the connecting piece comprises three sliding seats in sliding fit with the annular cavity;

the number of the first springs and the number of the second springs are both two;

the sliding seats are arranged between the two second springs at intervals, and the first springs are arranged between the adjacent sliding seats respectively;

the first end of the second spring is respectively contacted and propped against the sliding seat, and the second end of the second spring is respectively contacted and propped against the lug and the boss;

when the first spring is in a maximum compression state, the adjacent sliding seats are in contact and abut against each other.

Furthermore, two end faces of the sliding seat are respectively provided with a first inner groove for embedding the end part of the first spring, and a first opening communicated with the inner groove is formed in the outer side wall of the sliding seat.

Further, the spring seat is in one-to-one correspondence with the second spring;

the first end of the second spring is respectively contacted and propped against the lug and the boss through the spring seat;

and a second inner groove for embedding the first end of the second spring is formed in the spring seat, and a second opening communicated with the second inner groove is formed in the outer side wall of the spring seat.

Further, the connecting piece comprises two end covers which are in sliding fit with the annular cavity;

the first end of the first spring is contacted and propped against the boss through one end cover, and the second end of the first spring is contacted and propped against the first end of the second spring through the other end cover;

the second end of the second spring is in contact with and butts against the lug;

when the first spring is in a maximum compression state, the two end covers are contacted and abutted.

Furthermore, the opposite first end surfaces of the two end covers are distributed with guide column parts extending into the first spring;

when the first spring is in a maximum compression state, the guide pillar parts are contacted and abutted.

Furthermore, lubricating grease is arranged in the accommodating cavity.

Further, a seal is also included;

the sealing element is arranged between the rubber vibration damping disc and the shell and used for sealing the annular cavity.

Further, the sealing element comprises a first sealing ring, a second sealing ring and a disc spring;

the first sealing ring is arranged on the shell;

the second sealing ring is arranged on the rubber vibration reduction disc;

the disc spring is mounted between the first seal ring and the second seal ring.

Further, the device also comprises a third spring and a fourth spring;

the third spring is embedded in the first spring;

the fourth spring is embedded in the second spring.

According to the technical scheme, the spring assembly comprises the first spring, the second spring and the connecting piece, wherein the rigidity of the first spring is smaller than the rigidity of the second spring, the connecting piece is used in the state that the first spring is in the maximum compression state, the acting force of the second spring on the first spring is isolated, so that only the second spring acts in the annular cavity channel, repeated overlapping and pressing between the springs is avoided, the service life of the springs is effectively prolonged, and the overall durability is further improved. And the design of multi-stage springs with different rigidity is adopted, so that different elastic coefficients are formed to realize torsion vibration reduction under multiple working conditions, and the integral use stability is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a cross-sectional view of a damper wheel provided herein;

FIG. 2 is an enlarged view of the position A in FIG. 1;

FIG. 3 is a schematic diagram illustrating a first example of an application of a spring assembly of a damper wheel provided herein;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a schematic diagram illustrating a second exemplary embodiment of a spring assembly for a damper wheel according to the present disclosure;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural view of a sheave of a damper wheel provided herein;

FIG. 8 is an exploded view of a hub, fork and rubber damper disk of a damper wheel provided herein;

in the figure: 1. a grooved wheel; 11. a boss; 12. an annular channel; 2. a rubber vibration damping disc; 21. a mass ring; 22. a rubber ring; 23. rotating the hub; 3. a shifting fork; 31. a lug; 4. a housing; 51. a first spring; 52. A second spring; 53. a third spring; 54. a fourth spring; 61. an end cap; 62. a slide base; 63. a spring seat; 71. a first seal ring; 72. a disc spring; 73. a second seal ring; 8. a hub; 9. riveting; 100. a rubbing pad; 201. a shaft assembly; 202. a limiting washer; 203. a friction washer.

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The embodiment of the application discloses a damping wheel.

Referring to fig. 1 and 7, an embodiment of a damping wheel provided in an embodiment of the present application includes:

the damping device comprises a shell 4, a grooved pulley 1, a hub 8, a shifting fork 3, two spring assemblies and a rubber damping disc 2; the shell 4 is covered on the grooved pulley 1, and an annular cavity 12 for accommodating the spring assembly is enclosed between the shell and the grooved pulley 1; the hub 8 is rotatably arranged on the grooved pulley 1, and the first end facing the shell 4 is synchronously and rotatably connected with the first side surface of the shifting fork 3 in the same axial direction; two lugs 31 extending into the annular cavity 12 are symmetrically arranged on the shifting fork 3; the grooved wheel 1 is symmetrically provided with two bosses 11 corresponding to the lugs 31 in the annular cavity 12; the rubber vibration reduction disc 2 is arranged on the second side surface of the shifting fork 3 and is synchronously and rotatably connected with the shifting fork 3 in the same axial direction; the first ends of the two spring components are respectively contacted and abutted with the boss 11, the second ends of the two spring components are respectively contacted and abutted with the lug 31, and the spring components comprise a first spring 51, a second spring 52 and a connecting piece; the first spring 51 has a lower rigidity than the second spring 52 and is connected with the second spring 52 through a connecting piece; the linkage serves to isolate the force of the second spring 52 against the first spring 51 when the first spring 51 is in a state of maximum compression.

Specifically, the theory of operation example of this embodiment is as follows, the whole one end fixed connection with the bent axle of engine of this application damping wheel, when engine drive annex operation, the moment of torsion passes through wheel hub 8 and transmits for shift fork 3, and then drives shift fork 3 and rubber damping dish 2 and rotate, and lug 31 extrusion spring assembly one end on the shift fork 3 for first spring 51 and second spring 52 in the spring assembly take place after elastic deformation and drive sheave 1 through the effect between spring assembly and the boss 11 and rotate. Of course, the damper wheel in the present application can also be applied to the case where the motor drives the crankshaft through the sheave 1 to start the engine. For example, when the sheave 1 is driven by an external motor, the boss 11 presses the spring assembly, so that the first spring 51 and the second spring 52 in the spring assembly are elastically deformed and then drive the shift fork 3 to rotate through the lug 31, and further drive the hub 8 and the rubber damper disc 2 to rotate, thereby driving the crankshaft to rotate and starting the engine. The damping wheel in the embodiment decouples rigid torsional motion of the crankshaft and the accessory drive through the first spring 51 and the second spring 52 in the spring assembly, so that the rigid torsional motion of the crankshaft is higher than a fixed frequency, and the torsional amplitude of the train wheel drive at a higher torsional first-order mode natural frequency is reduced in turn, and resonance generated when the grooved pulley 1 and an engine run is avoided, particularly under an idling working condition, namely when the load of the accessory is highest; meanwhile, the rubber vibration damping disc 2 can be used for adjusting the torsional natural frequency of the first-order mode of the crankshaft to be lower than the idling ignition frequency of the engine, so that the vibration amplitude and stress of the crankshaft are reduced, and the vibration damping effect is achieved. More importantly, the arranged spring assembly consists of a first spring 51, a second spring 52 and a connecting piece, wherein the rigidity of the first spring 51 is less than that of the second spring 52, and the connecting piece is used for isolating the acting force of the second spring 52 on the first spring 51 when the first spring 51 is in the maximum compression state, so that only the second spring 52 acts in the annular cavity 12, repeated overlapping of the springs is avoided, the service life of the springs is effectively prolonged, and the durability of the whole body is further improved. And the design of multi-stage springs with different rigidity is adopted, so that different elastic coefficients are formed to realize torsion vibration reduction under multiple working conditions, and the integral use stability is improved.

The above is a first embodiment of a damping wheel provided in the embodiments of the present application, and the following is a second embodiment of a damping wheel provided in the embodiments of the present application, specifically referring to fig. 1 to 8.

A vibration-damped wheel, comprising: the damping device comprises a shell 4, a grooved pulley 1, a hub 8, a shifting fork 3, two spring assemblies and a rubber damping disc 2; the shell 4 is covered on the grooved pulley 1, and an annular cavity 12 for accommodating the spring assembly is enclosed between the shell and the grooved pulley 1; the hub 8 is rotatably arranged on the grooved pulley 1, and the first end facing the shell 4 is synchronously and rotatably connected with the first side surface of the shifting fork 3 in the same axial direction; two lugs 31 extending into the annular cavity 12 are symmetrically arranged on the shifting fork 3; the grooved wheel 1 is symmetrically provided with two bosses 11 corresponding to the lugs 31 in the annular cavity 12; the rubber vibration reduction disc 2 is arranged on the second side surface of the shifting fork 3 and is synchronously and rotatably connected with the shifting fork 3 in the same axial direction; the first ends of the two spring components are respectively contacted and abutted with the boss 11, the second ends of the two spring components are respectively contacted and abutted with the lug 31, and the spring components comprise a first spring 51, a second spring 52 and a connecting piece; the first spring 51 has a lower rigidity than the second spring 52 and is connected with the second spring 52 through a connecting piece; the connecting member serves to isolate the force of the second spring 52 against the first spring 51 when the first spring 51 is in a maximum compressed state. In this embodiment, grease may be disposed in the annular channel 12 to reduce wear of the spring assembly and further improve the service life of the spring assembly. In addition, the rubber damping disc 2 in this embodiment may include a rotating hub 23 connected to the hub 8 in a synchronous rotation manner, a rubber ring 22 sleeved on the outer circumferential wall of the rotating hub 23, and a mass ring 21 sleeved on the outer circumferential wall of the rubber ring 22, wherein the rubber ring 22 is vulcanized and bonded between the rotating hub 23 and the mass ring 21 in a high-pressure heating state, so as to realize a fixed connection with the rotating hub 23 and the mass ring 21. The rubber damping disc 2, the hub 8 and the shifting fork 3 can be fixed through connecting pieces such as a rivet 9, and synchronous rotation is achieved. For example, the matched end faces of the rotating hub 23, the shifting fork 3 and the hub 8 are provided with mounting through holes, and then the mounting and fixing are realized through the rivets 9 and the like, so that the rotating hub 23, the shifting fork 3 and the hub 8 are pressed into a whole, and the three parts are combined with the rivets 9 through surface friction to fix and synchronously rotate. Those skilled in the art can make appropriate changes based on the above without limitation.

Further, as shown in fig. 8, in order to increase the friction force between the hub 23, the fork 3 and the hub 8 against the relative rotation, a rough treatment such as sand blasting may be performed on the side surfaces of the fork 3 respectively engaged with the hub 23 and the hub 8 to make the surfaces have a large roughness. Of course, friction pads 100 may be added to both side surfaces of the yoke 3 to increase the contact friction between the yoke 3 and the hub 23 and the hub 8. Wherein, friction pad 100 can be provided with a plurality of linear slots that are radially distributed around friction pad 100 center, can further increase the surface friction of shift fork 3 through these linear slot designs to avoid shift fork 3 to skid and fasteners such as rivet 9 receive high shear force. The friction force between the shifting fork 3 and the hub 8 and between the shifting fork 23 is improved by the mode of arranging the friction gasket 100, and compared with the mode of directly carrying out rough treatment on the surface of the shifting fork 3, the subsequent maintenance and replacement are more convenient, and the secondary rough treatment on the shifting fork 3 is not needed. Those skilled in the art can make appropriate changes based on the above without limitation.

Further, as shown in fig. 3 and 4, the structural components of the connecting member may be, for example, the connecting member may include three sliding seats 62 slidably engaged with the annular channel 12; the number of the first springs 51 and the number of the second springs 52 are both two; the three sliding seats 62 are arranged between the two second springs 52 at intervals, and the first springs 51 are respectively arranged between the adjacent sliding seats 62; the first ends of the second springs 52 are respectively contacted and abutted with the sliding seat 62, and the second ends are respectively contacted and abutted with the lugs 31 and the bosses 11; when the first spring 51 is in the maximum compression state, the adjacent sliding seats 62 are in contact with each other.

Specifically, when the first spring 51 is in the maximum compression state, the adjacent sliding seats 62 can contact with each other at this time, so that the acting force of the second spring 52 on the first spring 51 is isolated, repeated overlapping between the first spring 51 and the second spring 52 is avoided, and the service life of the spring is prolonged. The structure of the sliding base 62 may be, for example, the lower end face of the sliding base 62 is respectively provided with a first inner groove for embedding the end of the first spring 51, so that the end of the first spring 51 can be embedded conveniently, and the outer side wall of the sliding base 62 is provided with a first opening communicated with the inner groove. The first opening can be used for generating an oil film and increasing the lubricating effect. In this embodiment, the length of the first spring 51 or the second spring 52 can be reduced by providing two or more first springs 51 or second springs 52, so that the first springs 51 and the second springs 52 can be arranged along the tangential direction of the annular channel 12, and the first springs 51 and the second springs 52 can be straight springs. In this embodiment, a first specific application example of the present application is not limited to this. The number of the first spring 51 and the second spring 52 may be two, and the corresponding slide 62 is different according to the distribution between the first spring 51 and the second spring 52, and the corresponding number is different, and those skilled in the art can make appropriate changes based on the above, and the invention is not limited in detail.

Further, taking fig. 3 and 4 as an example, a spring seat 63 corresponding to the second spring 52 one to one may be further included; a first end of the second spring 52 is respectively contacted and abutted with the lug 31 and the boss 11 through a spring seat 63; the spring seat 63 is provided with a second inner groove for embedding the first end of the second spring 52, so that the second spring 52 is conveniently fixed, and a second opening communicated with the second inner groove is formed in the outer side wall of the spring seat 63. Similarly, the second opening can be used for forming an oil film to improve the lubricating effect.

Further, as shown in fig. 5 and 6, the connecting member may further include two end caps 61 slidably engaged with the annular channel 12; a first end of the first spring 51 is contacted and abutted with the boss 11 through one end cover 61, and a second end is contacted and abutted with a first end of the second spring 52 through the other end cover 61; the second end of the second spring 52 is in contact against the lug 31; when the first spring 51 is in a maximum compression state, the end caps 61 are in contact with each other.

Specifically, for example, the number of the first spring 51 and the second spring 52 is one, and the spring may further include two end covers 61, where the end covers 61 are disposed at two ends of the first spring 51, and when the first spring 51 is in the maximum compression state, the two end covers 61 contact and abut against each other, so as to isolate the acting force of the second spring 52 on the first spring 51. The end cover 61 may be, for example, a lower end cover, and guide pillar portions extending into the first spring 51 are distributed on opposite first end surfaces of the two end covers 61; one end cover 61 contacting and abutting against the boss 11 can be provided with a guide post part only on one end face, and the other end cover 61 arranged between the first spring 51 and the second spring 52 can be provided with guide post parts on both end faces, so that the second spring 52 can be conveniently connected and fixed; when the first spring 51 is in a maximum compressed state, the guide post portions are in contact against each other. The guide post part is in an arc structure matched with the annular cavity 12, so that a first spring 51 and a second spring 52 are conveniently installed; in this embodiment, the number of the first springs 51 and the second springs 52 is single, so that the length of the first springs 51 and the length of the second springs 52 are long, and therefore, the first springs 51 and the second springs 52 may be arc springs. In this embodiment, the second specific application example of the present application is not limited to this. Those skilled in the art can make appropriate changes based on the above without limitation.

Further, as shown in fig. 2, a sealing member is further included; a seal is mounted between the rubber damping disc 2 and the housing 4 for sealing the annular channel 12. The lubricating effect can be prevented from being influenced by the lubricating grease leakage in the annular cavity 12, and external dust and other fine particles can be prevented from entering the annular cavity 12. Wherein, the sealing structure can be a sealing structure comprising a first sealing ring 71, a second sealing ring 73 and a disc spring 72; the first seal ring 71 is mounted on the housing 4; the second sealing ring 73 is mounted on the rubber damping disc 2; the disc spring 72 is installed between the first seal ring 71 and the second seal ring 73. When the rubber damper disk 2 is mounted on the yoke 3, the disc spring 72 can be pressed between the housing 4 and the rubber damper disk 2 by the pressure of the side surface thereof, and the first seal ring 71 and the second seal ring 73 can be used to fix the disc spring 72, thereby improving the sealing property.

Further, a third spring 53 and a fourth spring 54 may be further included; as shown in fig. 1, the third spring 53 is embedded in the first spring 51; the fourth spring 54 is embedded in the second spring 52. In this embodiment, the third spring 53 may have the same size and different diameter as the first spring 51, so as to facilitate the nesting, and similarly, the fourth spring 54 may have the same size and different diameter as the second spring 52. Through the structural design of the superposed spring, better rigidity characteristic can be obtained, so that the torque impact of a larger corner can be better buffered, and the service life and the stability of the whole are further improved.

Further, in order to enable the hub 8 and the sheave 1 to rotate relatively better and reduce the friction force generated during the rotational fitting, a sleeve 201 may be embedded in the middle shaft hole of the sheave 1, and the sheave 1 is sleeved on the hub 8 through the sleeve 201, so as to reduce the friction force during the rotational fitting. An annular limiting washer 202 can be integrally connected to the first end of the shaft sleeve 201, and the limiting washer 202 is in contact with and abuts against one end face of the sheave 1 to limit the mobility of the shaft sleeve 201, so that the matching stability of the hub 8 and the sheave 1 is improved. The shaft sleeve 201 in this embodiment may be a steel back shaft sleeve, and those skilled in the art may make appropriate changes according to actual needs, and do not specifically limit the present invention.

Further, an avoiding groove for accommodating the limiting gasket 202 is arranged on one side face of the belt matched with the hub 8 at the position of the middle shaft hole, wherein the depth of the avoiding groove can be larger than or equal to the thickness of the limiting gasket 202. The groove of dodging that sets up more makes things convenient for the location installation of axle external member 201, can reduce simultaneously between sheave 1 and the wheel hub 8 at axial direction cooperation length, overall structure is compacter.

Further, the friction washer 203 can be further included and arranged on the limit washer 202, so that contact abrasion between the step part of the hub 8 and the sheave 1 in the axial direction can be reduced, and the service life of the whole structure is prolonged.

While the present application has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims

1. A vibration-damped wheel, comprising: the device comprises a shell, a grooved wheel, a hub, a shifting fork, two spring assemblies and a rubber damping disc;

2. The damper wheel according to claim 1, wherein said connecting member comprises three slides slidably engaged with said annular channel;

3. The damping wheel according to claim 2, wherein the sliding seat is provided with a first inner groove for the end of the first spring to be inserted into at two end faces, and a first opening communicating with the inner groove is provided on an outer side wall of the sliding seat.

4. The damper wheel according to claim 2, further comprising a spring seat in one-to-one correspondence with the second spring;

5. The damper wheel of claim 1, wherein the connecting member includes two end caps in sliding engagement with the annular channel;

6. The damping wheel according to claim 5, wherein the first end faces of the two end covers opposite to each other are distributed with guide pillar portions extending into the first spring;

7. The vibration-damped wheel according to claim 1 wherein grease is disposed within said pocket.

8. The damper wheel according to claim 7, further comprising a seal;

9. The damper wheel of claim 8, wherein the seal comprises a first seal ring, a second seal ring, and a disc spring;

the first sealing ring is arranged on the shell;

the second sealing ring is arranged on the rubber vibration reduction disc;

10. The damper wheel of claim 1, further comprising a third spring and a fourth spring;

the third spring is embedded in the first spring;

the fourth spring is embedded in the second spring.