High-frequency-domain vibration and noise reduction gear

Abstract

The utility model relates to a high-frequency domain 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 filler is embedded in the lightening holes, rubber rings are bonded to the two sides of the spoke of the gear body respectively, the rubber rings are attached to the surface of the spoke of the gear body, and the rubber rings are connected with the gear body. The end faces of the two sides of the foamed aluminum filler make contact with the rubber rings on the corresponding sides respectively, the sections of the rubber rings are in a U shape, and the U-shaped bottoms of the rubber rings extend outwards to form rubber flashes. The foamed aluminum filler and the rubber ring in the lightening holes absorb a part simultaneously, and meanwhile, vibration noise caused by high-order mode vibration of the gear can be restrained by anti-phase resonance of the rubber flash on the rubber ring, so that the vibration and noise reduction effect is further achieved, the use environment of the whole gear train is improved, and the service life of the gear train is prolonged. Therefore, the service life of the gear is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts, in particular to a high-frequency vibration and noise reduction gear. Background Art

[0002] Gear transmission is a critical component in mechanical transmission devices, particularly in gearboxes, where it converts torque magnitude and direction. In actual transmission, torque causes the teeth of different gears to contact and mesh with each other, and during high-speed rotation, friction and collisions occur, generating vibration and noise that are transmitted to surrounding components, causing vibration and noise in the cab. Furthermore, under some harsh operating conditions, fatigue damage can occur to gears or other parts in the shaft system. Currently, optimizing vibration and noise between gear trains primarily involves improving the machining accuracy and surface finish of the gears, that is, reducing the source of vibration and noise. However, this method places extremely high demands on the machining of the gears, resulting in high manufacturing costs and insignificant vibration and noise reduction effects. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a high-frequency vibration and noise reduction gear structure that absorbs vibration and noise in the high-frequency field and suppresses resonance at multiple frequencies, thereby further reducing vibration and noise; when the gear is working, the meshing vibration and noise generated can be partially absorbed by the foam aluminum filler and rubber layer in the weight-reducing hole. In addition, since the high-order modal vibration noise of the gear itself can be suppressed by the anti-phase resonance of the annular burr of the rubber layer, the effect of vibration reduction and noise reduction can be further achieved, the use environment of the entire gear system can be improved, and the service life of the gear can be increased.

[0004] The purpose of this utility model is achieved in this way:

[0005] A high-frequency vibration and noise reduction gear comprises a gear body, the spokes of the gear body are uniformly distributed with weight-reducing holes along the circumference, the weight-reducing holes are embedded with foam aluminum fillers, rubber rings are bonded to both sides of the spokes of the gear body, the rubber rings are in contact with the spoke surfaces of the gear body, the cross-section of the rubber ring is U-shaped, and a circle of rubber burrs extends outward from the U-shaped bottom of the rubber ring.

[0006] Preferably, the rubber burr is arranged at the center of the U-shaped bottom of the rubber ring.

[0007] Preferably, the foam aluminum filler is interference-embedded in the weight-reducing hole, and both side end surfaces of the foam aluminum filler are in contact with the rubber ring on the corresponding side respectively.

[0008] Preferably, the rubber ring is adhered to the spoke surface by hot vulcanization or cold bonding.

[0009] Preferably, the rubber burrs are lower than the two side walls of the rubber ring.

[0010] Preferably, the height of the rubber flash is twice the width.

[0011] The utility model discloses the beneficial effect is:

[0012] 1. When the gear transmission produces the meshing vibration and noise of tooth, the foam aluminum filler in the lightening hole and the rubber ring on both sides of the spoke can absorb part of energy in its transmission path, so as to achieve the effect of vibration and noise reduction.

[0013] 2. Due to the existence of the lightening hole, the weight of the damping gear is reduced, and its modal frequency is also increased, thereby changing its modal frequency.

[0014] 3. When the gear works, the inherent modal of itself makes the vibration and noise increase, the rubber flash on the spoke rubber ring resonates at the frequency of the working modal of the gear, and the phase is opposite, thereby inhibiting and absorbing the vibration of the inherent modal of the gear itself.

[0015] 4. The lightening hole, foam aluminum filler and rubber ring with rubber flash jointly act, effectively absorb and inhibit vibration and noise under multiple transmission paths, and improve the service life of the gear. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a high-frequency domain damping and noise reduction gear three-dimensional structure schematic view.

[0017] Figure 2 It is Figure 1 A three-dimensional structure cross-sectional view.

[0018] Figure 3 It is a high-frequency domain damping and noise reduction gear internal structure schematic view.

[0019] Among them: gear body 1;Foam aluminum filler 2;Rubber ring 3;Rubber flash 3.1. PREFERRED EMBODIMENT

[0020] Referring to Figure 1-3 , the utility model relates to a kind of high-frequency domain damping and noise reduction gears, including gear body 1, the spoke of gear body 1 is uniformly distributed with lightening hole, lightening hole is evenly processed and is distributed in the spoke of gear body 1 in the middle, for reducing the weight of gear itself, improve its modal.The foam aluminum filler 2 of inlay is arranged in the lightening hole, the spoke of gear body 1 is respectively bonded with rubber ring 3 on both sides, the rubber ring 3 is attached with the spoke surface of gear body 1, the two side end faces of foam aluminum filler 2 are respectively contacted with corresponding side rubber ring.The cross section of the rubber ring 3 is U-shaped, the U-shaped bottom of the rubber ring 3 extends a circle of rubber flash 3.1 outward, and the rubber flash 3.1 is arranged in the center of the U-shaped bottom of the rubber ring 3.

[0021] The aluminum foam filler 2 is interference-fitted within the weight-reducing hole, ensuring it will not fall out during operation. This increases the reliability of the gear and effectively absorbs vibration noise during high-speed gear rotation by the evenly distributed aluminum foam fillers 2. This also prevents the rubber ring 3 from falling out, thereby increasing the fatigue life of the rubber vibration-damping gear. The aluminum foam filler 2 is selected based on the magnitude and frequency of the vibration noise it absorbs, and its parameters are adjusted to select the appropriate honeycomb pore size and density based on the needs.

[0022] The rubber ring 3 is integrally vulcanized and adhered to the spoke surface by hot vulcanization or cold bonding.

[0023] The vibration generated by the gear body 1 during transmission operation can be partially absorbed by the foam aluminum filler 2 in the weight-reducing hole and the rubber rings 3 on both sides of the gear spokes. At the same time, the natural modal resonance generated by the gear body 1 itself can be partially suppressed by the rubber burrs 3.1 on the rubber rings, thereby further reducing the vibration noise generated by the vibration-damping gear and achieving the purpose of vibration and noise reduction.

[0024] The rubber ring 3 can be made of oil-resistant and high-temperature-resistant silicone rubber, hydrogenated nitrile rubber or nitrile rubber.

[0025] The rubber burrs 3.1 are lower than the two side walls of the rubber ring 3, and the height of the rubber burrs 3.1 is twice as large as its width.

[0026] The size and structure of the rubber flash 3.1 can be adjusted according to the frequency of the vibration noise to be absorbed or the modal resonance frequency generated by the gear body or a part thereof.

[0027] When the vibration noise frequency is within the range of 5000-15000 Hz, the thickness of the rubber ring is 3 mm, which is used to absorb the vibration of the spokes. The width of the rubber flash is 6 mm and the height is 3 mm.

[0028] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A high-frequency vibration and noise reduction gear, characterized by: It includes a gear body, the spokes of the gear body are evenly distributed with weight-reducing holes along the circumference, the weight-reducing holes are embedded with foam aluminum fillers, rubber rings are bonded on both sides of the spokes of the gear body, the rubber rings are fitted with the spoke surfaces of the gear body, the cross-section of the rubber ring is U-shaped, and a circle of rubber burrs extends outward from the U-shaped bottom of the rubber ring.

2. The high-frequency vibration and noise reduction gear according to claim 1, characterized in that: The rubber burr is arranged at the center of the U-shaped bottom of the rubber ring.

3. The high-frequency vibration and noise reduction gear according to claim 1, characterized in that: The foam aluminum filler is interference-embedded in the weight-reducing hole, and both side end surfaces of the foam aluminum filler are in contact with the rubber ring on the corresponding side respectively.

4. The high-frequency vibration and noise reduction gear according to claim 1, characterized in that: The rubber ring is attached to the spoke surface by means of hot vulcanization or cold bonding.

5. The high-frequency vibration and noise reduction gear according to claim 1, characterized in that: The rubber fins are lower than the two side walls of the rubber ring.

6. The high-frequency vibration and noise reduction gear according to claim 5, characterized in that: The height of the rubber flash is twice its width.

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