CN219345354U

CN219345354U - Torsional vibration damper

Info

Publication number: CN219345354U
Application number: CN202223562425.0U
Authority: CN
Inventors: 赵光辉; 卓建东; 朱炎铭; 刘世文
Original assignee: Dayco Suzhou Co Ltd
Current assignee: Daigao Suzhou Drive System Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-14
Anticipated expiration: 2032-12-30

Abstract

The utility model aims to provide a torsional vibration damper which comprises a damper shell, an inertia ring and a cover plate, wherein the inertia ring is arranged in an inner cavity of the damper shell and seals the inner cavity through the cover plate, damping liquid of the vibration damper is filled in the inner cavity, limit grooves are further formed in the two ends of the inertia ring, close to the edge parts of the inertia ring, along the circumferential direction, and the limit grooves are used for installing limit rings. The limit ring is arranged at the edge close to the inertia ring, so that the influence of axial impact on deformation of the limit ring can be reduced, the deformation and abrasion allowance of the limit ring can be increased, and the limit ring is longer in impact resistance in the high-frequency impact process.

Description

Torsional vibration damper

Technical Field

The application relates to the technical field of automobile engines, in particular to a torsional vibration damper.

Background

The vibration absorber is applied to engines such as passenger cars, heavy trucks, mines, agricultural machinery and the like, the working environment is relatively bad, the rotating speed, torsional vibration, axial acceleration and radial acceleration of the engine are large in the running process, under the bad working condition, the vibration absorber loses the supporting function due to the fact that the axial and radial long-term high-frequency impact limit rings are in impact deformation failure, the deformation allowance is insufficient due to the fact that the structural arrangement positions of the limit rings are unreasonable, the inertia ring and the shell are subjected to metal pair grinding to generate high temperature, the vibration absorber is invalid, and finally the engine can not work if serious.

Disclosure of Invention

In order to solve the problems in the background art, the utility model aims to provide a silicone oil torsional vibration damper so as to solve the problems of failure of a damper limit ring and high temperature generation under severe working conditions of an engine.

In order to achieve the above object, the present utility model provides a torsion damper, including a damper housing, an inertia ring and a cover plate, wherein the inertia ring is installed in an inner cavity of the damper housing, the inner cavity is sealed by the cover plate, vibration damping liquid is filled in the inner cavity, and limit grooves are further provided at two ends of the inertia ring along a circumferential direction near edge portions of the inertia ring, and the limit grooves are used for installing limit rings.

Further, an oil filling hole is formed in the damper shell or the cover plate, and the oil filling hole is sealed through a screw.

Further, a vibration damping belt is arranged between the inner ring of the inertia ring and the vibration damper shell.

Further, the vibration reduction damping fluid is silicone oil.

Further, the limit ring is provided with a plurality of oil grooves in the radial direction.

Preferably, an opening direction of the oil groove is opposite to the damper housing and the cover plate on the corresponding side.

The beneficial effect of above-mentioned scheme lies in: the limiting rings are outwards arranged, the influence of axial impact on deformation of the limiting rings can be reduced, deformation and abrasion allowance of the limiting rings can be increased, the limiting rings are enabled to be longer in impact resistance in the high-frequency impact process, meanwhile, the oil grooves which can enable vibration damping liquid to flow are designed on the limiting rings, the fluxion and heat dissipation of silicone oil in the vibration damper can be increased, the problems that the vibration damper limiting rings fail and generate high temperature under severe working conditions of an engine can be solved, and the service life of the vibration damper can be greatly prolonged while the service life of the limiting rings is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some of the embodiments described in the present description, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art risk map for tilting the position layout of a stop collar;

FIG. 2 is a schematic view of a torsional vibration damper according to the present utility model;

FIG. 3 is an enlarged schematic view of the position layout of the stop collar of the present utility model;

FIG. 4 is a schematic view of a stop collar according to the present utility model;

fig. 5 is a top view of the stop collar of fig. 4.

Detailed Description

In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.

It should be noted that the terms "upper," "lower," "front," "rear," "top," "bottom," and the like herein and below refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1, a torsion damper in the prior art comprises a damper housing 10, a cover plate 20 and an inertia ring 30, wherein the inertia ring 30 is installed in an inner cavity formed by the damper housing 10 and the cover plate 20, a limit groove is formed in the middle position, close to the inertia ring 30, of two ends of the inertia ring 30 along the circumferential direction, and a limit ring 40 is installed in the limit groove. Because the retainer ring 40 is configured at the middle position of the inertia ring 30, in the process of shifting the inertia ring 30 leftwards or rightwards, the retainer ring 40 can be in premature contact with the shock absorber shell 10 or the cover plate 20, so that impact influence on the retainer ring 40 in the axial direction of the shell or the cover plate 20 is increased, the deformation allowance of the retainer ring 40 is reduced, the impact resistant life of the retainer ring 40 in the high-frequency impact process is shorter, and the temperature rise is faster.

Referring to fig. 2 and 3, the utility model provides a shock absorber, which comprises a shock absorber shell 2, an inertia ring 3 and a cover plate 5, wherein the shock absorber shell 2 is provided with an inner cavity hollowed out, the cover plate 5 seals the inner cavity, the inertia ring 3 is arranged in the inner cavity, vibration reduction damping liquid 6 is filled in the inner cavity to be adhered to the surface of the inertia ring 3, limit grooves are further formed in the edge parts, close to the inertia ring 3, of two ends of the inertia ring 3 along the circumferential direction, and limit rings 1 are arranged in the limit grooves.

Referring to fig. 3, the stop collar 1 is installed near the edge of the inertia ring 3, and the stop collar 40, which is arranged in the position of the inertia ring 3 and is later than the position of fig. 1, of the stop collar 1 contacts with the shock absorber housing 2 or the cover plate 5 in the process of shifting the inertia ring 3, so that the influence of axial impact on the deformation of the stop collar 1 is reduced to a greater extent, the deformation allowance of the stop collar 1 is increased, the shock resistance of the stop collar 1 in the high-frequency impact process is longer, meanwhile, the vibration reduction damping liquid 6 is filled in a closed inner cavity formed by the shock absorber housing 2 and the cover plate 5, the vibration reduction damping liquid 6 can play the role of a liquid spring in the closed inner cavity, and meanwhile, the vibration reduction damping liquid also has the functions of lubricating the surfaces of the inertia ring 3, the stop collar 1, the shock absorber housing 2 and the cover plate 5, so that the abrasion of the inertia ring 3 is reduced in the shifting process, and the service life of the shock absorber is further improved.

Referring to fig. 2, an oil hole 7 is provided in the damper housing, the oil hole 7 is sealed by a screw, and the damping fluid 6 can be injected into the inner chamber through the oil hole 7. Of course, the oil filling hole 7 may also be provided in the cover plate 5, and such a simple change in position does not affect the actual function of the oil filling hole 7.

As shown in fig. 2, a damper band 4 is provided between the inner ring of the inertia ring 3 and the damper housing 2, and friction between the inner ring of the inertia ring 3 and the damper housing 2 is reduced by the damper band 4.

Further, the vibration damping liquid 6 is silicone oil, and in an ideal state, the vibration damping liquid can completely fill the gap to exhaust air, in practical application, a small amount of air can still be in the closed inner cavity, the silicone oil can lubricate the surfaces of the limit ring 1, the vibration damping belt 4, the inner cavity wall and the cover plate 5, and can be extruded in the deflection process of the inertia ring 3 to flow in the inner cavity, so that part of heat is taken away in a circulating mode.

In addition, in the high-speed running process of the engine, as the inertia ring 3 is suspended in the shock absorber filled with silicone oil under the supporting action of the limit ring 1 and the vibration reduction belt 4, under the high-speed and high-load running working condition of the engine, the inertia ring 3 can cut the silicone oil to generate a large amount of heat, the shock absorber can be disabled at high temperature when serious, the traditional circular ring type limit ring silicone oil has poor circulation inside the shock absorber, so that local heat cannot be transmitted through silicone oil circulation, the silicone oil cannot timely circulate to lubricate the vibration reduction belt 4 and the limit ring 1, and the service life of the shock absorber is prolonged. As shown in fig. 4, a plurality of oil grooves 11 are arranged in the radial direction of the limit ring 1, the oil grooves 11 can be communicated with the space at two sides of the limit ring 1 (the oil grooves 11), so that silicone oil can flow better in an inner cavity, the overall heat conductivity can be further improved better, and the phenomenon of local overheating can be prevented; in addition, when the silicone oil slides relative to the shell or the cover plate 5 in the oil groove 11, a part of the silicone oil uniformly flows to the surface of the limit ring 1, so that the abrasion of the limit ring 1 is reduced. The specific number of the oil grooves 11 may be adjusted according to the actual situation, for example, as shown in fig. 5, the number of the oil grooves 11 is 15.

Preferably, the opening direction of the oil groove 11 is opposite to the damper housing 2 and the cover plate 5 on the corresponding sides, so as to ensure that gaps for flowing of the silicone oil can exist between the damper housing 2 and the limit ring 1 and between the cover plate 5 and the limit ring 1, and the silicone oil can act as a liquid spring in the gaps. In order to further improve the fluidity of the silicone oil, the cross section of the oil groove 11 may be processed into a trapezoidal shape as shown in fig. 4.

Although the present application has been described by way of example, one of ordinary skill in the art will recognize that there are many variations and modifications to the present application without departing from the spirit of the present application, and it is intended that the appended embodiments include such variations and modifications without departing from the application.

Claims

1. The utility model provides a torsion damper, its characterized in that includes shock absorber casing, inertia ring and apron, the inertia ring is installed in the inner chamber of shock absorber casing, and pass through the apron is right the inner chamber is sealed, the intracavity is filled with damping liquid, the both ends of inertia ring are close to the edge portion of inertia ring still is provided with the spacing groove along the circumferencial direction, the spacing groove is used for installing the spacing collar, the inner circle of inertia ring with be equipped with the damping area between the shock absorber casing.

2. The torsional vibration damper of claim 1, wherein the damper housing or the cover plate is provided with oil holes, the oil holes being sealed by screws.

3. A torsional vibration damper according to claim 1, characterized in that the vibration damping fluid is silicone oil.

4. A torsional vibration damper according to claim 1, characterized in that the stop collar is provided with a plurality of oil grooves in the radial direction.

5. The torsional vibration damper of claim 4, wherein the oil groove is open in a direction opposite to the damper housing and the cover plate on the corresponding side.