Detachable vibration and noise reduction gear

Abstract

The utility model relates to a detachable vibration and noise reduction gear which comprises a gear body, lightening holes are evenly distributed in the circumferential direction of a spoke of the gear body, foamed aluminum is installed in the lightening holes in an interference pressing mode, vibration reduction rubber discs are symmetrically arranged on the two sides of the spoke, supporting pressing plates are arranged in the vibration reduction rubber discs, and the two vibration reduction rubber discs are fixed to the spoke through rivets. The damping gear is simple in structure, the foamed aluminum and the damping rubber disc in the lightening holes can absorb noise generated when the gear is meshed, the damping and noise reduction effect is achieved, the damping rubber disc is integrally formed by the rubber disc body and the supporting pressing plate in a vulcanization mode, the supporting pressing plate serves as a framework, conditions are provided for detachable connection of the damping rubber disc and the gear body, and the damping effect is good. The structural strength of the gear can be enhanced, deformation and vibration of the gear in the operation process are reduced, and therefore the vibration reduction effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, specifically to a detachable vibration-damping and noise-reducing gear. Background Technology

[0002] Gears are indispensable components in transmission systems. During the torque transmission process in a car, gears generate vibration and noise due to factors such as tooth meshing, friction, and load variations. This not only affects the normal operation of the transmission but also transmits vibrations to surrounding components, impacting the driving environment and passenger comfort. While various vibration-damping and noise-reducing gears have emerged in existing technologies, such as incorporating vibration-damping structures into the gear body or using special materials to reduce vibration and noise, these methods still have some shortcomings. For example, the vibration reduction effect is not ideal, the complex structure leads to increased manufacturing costs, or it cannot meet the needs of different operating conditions in practical applications. Therefore, it is necessary to propose a detachable vibration-damping and noise-reducing gear that reduces the aforementioned noise while simplifying assembly, improving work efficiency, and lowering production costs. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a detachable vibration-damping and noise-reducing gear with a simple structure. The foamed aluminum and vibration-damping rubber disc in the weight-reducing holes can absorb the noise generated during gear meshing, thereby further achieving the effect of vibration reduction and noise reduction. The vibration-damping rubber disc is integrally vulcanized with a rubber disc body and a supporting pressure plate. The supporting pressure plate serves as a skeleton, providing conditions for the detachable connection between the vibration-damping rubber disc and the gear body. This enhances the structural strength of the gear and reduces the deformation and vibration of the gear during operation, thereby achieving the effect of vibration reduction. The rubber disc body absorbs the noise generated by gear meshing, achieving the effect of vibration reduction and noise reduction.

[0004] The purpose of this utility model is achieved as follows:

[0005] A detachable vibration damping and noise reduction gear includes a gear body. The gear body has circumferentially distributed weight reduction holes on the spokes. Foam aluminum is press-fitted into the weight reduction holes. Vibration damping rubber discs are symmetrically arranged on both sides of the spokes. The vibration damping rubber discs have built-in support plates. The two vibration damping rubber discs are fixed to the spokes by rivets.

[0006] Preferably, the spokes are provided with rivet connecting holes corresponding to the rivets, and multiple rivet connecting holes are evenly distributed on the spokes around the circumference, and the rivet connecting holes are staggered with the weight reduction holes.

[0007] Preferably, the vibration damping rubber disc includes a rubber disc body and a supporting pressure plate. The supporting pressure plate is built into the rubber disc body and serves as the skeleton of the vibration damping rubber disc. It is made of metal, and the rubber disc body and the supporting pressure plate are integrally vulcanized.

[0008] Preferably, the supporting pressure plate is recessed inward to form a rivet mounting cavity corresponding to the rivet, and multiple rivet mounting cavities are evenly distributed circumferentially, with rivet mounting holes set in the corresponding rivet mounting cavities.

[0009] Preferably, the outer plane of the rubber disc away from the spokes has a clearance hole corresponding to the rivet, the clearance hole and the outer plane of the rivet mounting cavity form a countersunk hole, and the inner plane of the rubber disc in contact with the spokes has a clearance groove corresponding to the rivet.

[0010] The beneficial effects of this utility model are:

[0011] The aluminum foam and vibration damping rubber disc in the weight reduction holes can absorb the noise generated during gear meshing, thereby further achieving the effect of vibration reduction and noise reduction;

[0012] The vibration damping rubber disc is integrally vulcanized with the rubber disc body and the support plate. The support plate serves as a skeleton, providing conditions for the detachable connection between the vibration damping rubber disc and the gear body. It can enhance the structural strength of the gear and reduce the deformation and vibration of the gear during operation, thereby achieving the effect of vibration reduction. The rubber disc body absorbs the noise generated by gear meshing, achieving the effect of vibration reduction and noise reduction.

[0013] The vibration damping rubber disc, which is integrally vulcanized, is assembled onto the gear by riveting. This avoids the overall vulcanization of the gear, improves work efficiency, reduces assembly difficulty and production costs, and also avoids quality problems caused by bumps and knocks during the vulcanization process. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a detachable vibration-damping and noise-reducing gear according to the present invention.

[0015] Figure 2 for Figure 1 The main view.

[0016] Figure 3 for Figure 2 AA sectional view.

[0017] Figure 4 This is an assembly diagram of a detachable vibration-damping and noise-reducing gear according to the present invention.

[0018] Figure 5 This is a schematic diagram of the structure supporting the pressure plate.

[0019] in:

[0020] 1. Gear body; 1.1. Spokes; 2. Weight reduction hole; 3. Aluminum foam; 4. Vibration damping rubber disc; 4.1. Rubber disc body; 4.1.1. Clearance hole; 4.1.2. Clearance groove; 4.2. Support plate; 4.2.1. Rivet mounting cavity; 4.2.2. Rivet mounting hole; 5. Rivet connecting hole; 6. Detailed Implementation

[0021] See Figure 1-5 This utility model relates to a detachable vibration-damping and noise-reducing gear, including a gear body 1. The gear body 1 has circumferentially distributed weight-reducing holes 2 on its spokes 1.1. Foam aluminum 3 is press-fitted into the weight-reducing holes 2. Vibration-damping rubber discs 4 are symmetrically arranged on both sides of the spokes 1.1. The two vibration-damping rubber discs 4 are fixed to the spokes 1.1 by rivets 5. The spokes 1.1 are provided with rivet connecting holes 6 corresponding to the rivets 5. Multiple rivet connecting holes 6 are circumferentially distributed on the spokes 1.1, and the rivet connecting holes 6 are offset from the weight-reducing holes 2.

[0022] The vibration-damping rubber disc 4 includes a rubber disc body 4.1 and a supporting pressure plate 4.2. The supporting pressure plate 4.2 is built into the rubber disc body 4.1 and serves as the skeleton of the vibration-damping rubber disc 4. It is made of metal, and the rubber disc body 4.1 and the supporting pressure plate 4.2 are integrally vulcanized. When the gear vibrates due to external forces during transmission, the supporting pressure plate 4.2 can increase the overall rigidity of the gear, thereby reducing the amplitude and frequency of gear vibration. The foamed aluminum 3 in the weight-reducing holes 2 and the rubber disc body vulcanized and bonded to the outside of the supporting pressure plate can absorb the noise generated during gear meshing, thereby further achieving the effect of vibration reduction and noise reduction. At the same time, the use of the supporting pressure plate as the skeleton of the vibration-damping rubber disc can also reduce the amplitude and frequency of gear vibration, achieving a better effect of vibration reduction and noise reduction. In addition, the presence of the weight-reducing holes 2 can reduce the weight of the gear itself and increase the modal frequency.

[0023] The aluminum foam is honeycomb-shaped. When vibrating, the micro-deformation of the aluminum foam and the friction between it and the gear body generate damping, thereby reducing the vibration and energy dissipation of the gear. The honeycomb-shaped pores can absorb some high-frequency noise.

[0024] The shock-absorbing rubber disc with built-in support pressure plate can reduce vibration amplitude through its own elastic deformation, which can not only reduce noise, but also improve the fatigue performance of gears and extend their service life.

[0025] The supporting pressure plate 4.2 is recessed inward to form a rivet mounting cavity 4.2.1 corresponding to the rivet 5. Multiple rivet mounting cavities 4.2.1 are evenly distributed circumferentially. Rivet mounting holes 4.2.2 are set in the corresponding rivet mounting cavities 4.2.1. The outer plane of the rubber disc 4.1 away from the spokes is provided with a clearance hole 4.1.1 corresponding to the rivet 5. The inner plane of the rubber disc 4.1 that contacts the spokes 1.1 is provided with a clearance groove 4.1.2 corresponding to the rivet 5. The clearance hole 4.1.1 and the outer plane of the rivet mounting cavity 4.2.1 form a countersunk hole, which facilitates the head of the rivet 5 to be embedded in the vibration damping rubber disc 4.

[0026] 4.1 The rubber disc body is made of oil-resistant and high-temperature-resistant silicone rubber, hydrogenated nitrile rubber, or nitrile rubber, etc.

[0027] The aluminum foam inside the weight reduction hole needs to be interference-fitted with the gear body to ensure that it will not fall off during the working transmission process, which increases the reliability of the gear. When the gear rotates at high speed, its vibration noise can be effectively absorbed by multiple evenly distributed aluminum foams, and the rubber disc of the vibration damping rubber disc will be prevented from falling off, thereby improving the fatigue life of the rubber vibration damping gear.

[0028] The supporting pressure plate, which serves as the skeleton, has a ring structure. The supporting pressure plate provides the conditions for the detachable connection between the vibration damping rubber disc and the gear body, which can enhance the structural strength of the gear and reduce the deformation and vibration of the gear during operation, thereby achieving the effect of vibration reduction.

[0029] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A detachable vibration and noise reduction gear, characterized by: The gear body includes a gear body with weight-reducing holes evenly distributed around the spokes. Foamed aluminum is press-fitted into the weight-reducing holes. Vibration-damping rubber discs are symmetrically arranged on both sides of the spokes. The vibration-damping rubber discs have built-in support plates and are fixed to the spokes by rivets.

2. The detachable gear of claim 1, wherein: The spokes are provided with rivet connecting holes corresponding to the rivets. Multiple rivet connecting holes are evenly distributed around the spokes, and the rivet connecting holes are offset from the weight reduction holes.

3. The detachable gear of claim 1, wherein: The vibration damping rubber disc includes a rubber disc body and a supporting pressure plate. The supporting pressure plate is built into the rubber disc body and serves as the skeleton of the vibration damping rubber disc. It is made of metal, and the rubber disc body and the supporting pressure plate are integrally vulcanized.

4. The detachable gear of claim 1 or 3, wherein: The supporting pressure plate is recessed inward to form a rivet mounting cavity corresponding to the rivet. Multiple rivet mounting cavities are evenly distributed circumferentially, and rivet mounting holes are set in the corresponding rivet mounting cavities.

5. The detachable gear of claim 4, wherein: The outer plane of the rubber disc away from the spokes has a clearance hole corresponding to the rivet. The clearance hole and the outer plane of the rivet mounting cavity form a countersunk hole. The inner plane of the rubber disc in contact with the spokes has a clearance groove corresponding to the rivet.

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