Mute noise reduction type ball bearing

Abstract

The utility model relates to the technical field of ball bearings, in particular to a mute noise reduction type ball bearing which comprises an outer ferrule, an inner ferrule is arranged in the outer ferrule, an outer mounting ring is fixedly mounted on the inner side wall of the outer ferrule, an inner mounting ring is fixedly mounted on the outer side wall of the inner ferrule, and the same supporting framework is arranged between the outer mounting ring and the inner mounting ring. A third noise reduction layer, a second noise reduction layer and a first noise reduction layer which are sequentially arranged from outside to inside are integrated in the supporting framework, the three-layer structure forms composite noise reduction through welding fixation, and a carburized bearing steel fourth noise reduction layer arranged in the inner ferrule enhances the structural stability so as to reduce vibration noise. The surface abrasion resistance and the sound insulation effect are further improved through a fifth silencing layer made of a bearing steel and diamond-like coating mixed material and adopted by the outer ferrule, and the rubber silencing rubber mat on the surface of the outer ferrule and balls made of an alloy material are subjected to auxiliary optimization from the angles of external vibration buffering and rolling body abrasion resistance and noise reduction. And the mute and noise reduction effects in the rotating process of the bearing are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ball bearing, concretely to a mute and noise reduction type ball bearing. BACKGROUND

[0002] The mute and noise reduction type ball bearing is a mechanical transmission component specially designed for reducing vibration, friction and noise in the running process through means such as material optimization, structure improvement, precision machining and lubrication technology upgrading on the basis of the traditional ball bearing structure.

[0003] The noise of the conventional bearing mainly comes from multi-dimensional acoustic interference: the friction contact between the rolling body and the inner and outer rings is easy to produce high-frequency friction abnormal sound, especially in high-speed operation, the irregular contact of parts caused by insufficient manufacturing precision will intensify the vibration noise, and the external environmental noise is easy to be transmitted to the equipment interior through the bearing structure, and the conventional bearing lacks special sound insulation design and is difficult to block the intrusion of external noise, in view of this, the utility model provides a mute and noise reduction type ball bearing. SUMMARY

[0004] The utility model discloses a mute and noise reduction type ball bearing to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A mute and noise reduction type ball bearing, comprising:

[0007] The outer ring is provided with an inner ring, the inner side wall of the outer ring is fixedly installed with an outer mounting ring, the outer side wall of the inner ring is fixedly installed with an inner mounting ring, a same support framework is arranged between the outer mounting ring and the inner mounting ring, the outer side wall of the support framework is slidably connected with the inner side wall of the outer mounting ring, and the inner side wall of the support framework is slidably connected with the outer side wall of the inner mounting ring.

[0008] A plurality of circular grooves are arranged in the support framework, and a plurality of ball bearings are rotatably installed in the circular grooves.

[0009] A mute and noise reduction assembly is arranged in the support framework and used for reducing the noise of the bearing rotation.

[0010] Preferably, the mute and noise reduction assembly comprises a third sound-absorbing layer, the third sound-absorbing layer is arranged in the interior of the support framework, the interior of the third sound-absorbing layer is provided with a second sound-absorbing layer, the interior of the second sound-absorbing layer is provided with a first sound-absorbing layer, and the third sound-absorbing layer, the second sound-absorbing layer and the first sound-absorbing layer are fixed by welding.

[0011] Preferably, the third sound-absorbing layer is made of silicon nitride ceramic, the thickness of the third sound-absorbing layer is 0.3mm-0.5mm, the second sound-absorbing layer is made of polyoxymethylene, the thickness of the second sound-absorbing layer is 0.1mm-0.3mm, the first sound-absorbing layer is made of polyurea-based lubricating grease, and the thickness of the first sound-absorbing layer is 0.1mm-0.2mm.

[0012] Preferably, the inner sleeve ring is provided with a fourth sound-absorbing layer, the fourth sound-absorbing layer is made of carburized bearing steel, and the thickness of the fourth sound-absorbing layer is 0.5mm-0.7mm.

[0013] Preferably, the outer sleeve ring is provided with a fifth sound-absorbing layer, the fifth sound-absorbing layer is made of a mixed material of bearing steel and diamond-like coating, and the thickness of the fifth sound-absorbing layer is 0.3mm-0.5mm.

[0014] Preferably, the plurality of circular grooves are matched with a plurality of balls.

[0015] Preferably, the surface of the outer sleeve ring is provided with a rubber sound insulation rubber pad.

[0016] Preferably, the plurality of balls are made of alloy material.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The silent noise reduction type ball bearing, the implementation of the silent noise reduction function relies on multi-level acoustic optimization design, the support framework is internally integrated with a third sound-absorbing layer, a second sound-absorbing layer and a first sound-absorbing layer arranged from outside to inside, and the three-layer structure is fixed by welding to form a composite noise reduction, wherein the third sound-absorbing layer made of silicon nitride ceramic blocks the transmission of external noise due to high strength characteristics, the second sound-absorbing layer made of polyoxymethylene absorbs mid-frequency vibration noise through the damping characteristics of the material itself, and the first sound-absorbing layer made of polyurea-based lubricating grease directly acts on the rolling contact surface of the ball, which not only provides lubrication to reduce friction and abnormal sound, but also can absorb high-frequency noise, at the same time, the carburized bearing steel fourth sound-absorbing layer built in the inner sleeve ring enhances the structural stability to reduce vibration noise, the bearing steel and diamond-like coating mixed material fifth sound-absorbing layer adopted by the outer sleeve ring further improves the surface wear resistance and sound insulation effect, the rubber sound insulation rubber pad on the surface of the outer sleeve ring and the ball made of alloy material respectively assist in optimization from the aspects of external vibration buffering and rolling body wear-resistant noise reduction, and finally, through the whole chain design of friction form optimization, multi-layer material sound absorption and structure vibration suppression, the silent noise reduction effect in the bearing rotation process is realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2It is the internal structure schematic view of the mounting inner ring and the mounting outer ring in the utility model.

[0021] Figure 3 It is the internal structure schematic view of the support framework in the utility model.

[0022] Figure 4 It is the internal structure schematic view of the inner sleeve ring and the outer sleeve ring in the utility model.

[0023] In the figure: 1, inner sleeve ring; 2, outer sleeve ring; 3, mounting inner ring; 4, mounting outer ring; 5, support framework; 6, ball; 7, first sound-absorbing layer; 8, second sound-absorbing layer; 9, third sound-absorbing layer; 10, fourth sound-absorbing layer; 11, fifth sound-absorbing layer; 12, circular groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the size of each part shown in the drawings is not drawn according to the actual proportion relationship. The technology, method and equipment known to those skilled in the relevant art may not be discussed in detail, but should be regarded as part of the authorized specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0027] A mute noise-reducing type ball bearing, comprising:

[0028] The outer sleeve ring 2 is provided with the inner sleeve ring 1, the inner side wall of the outer sleeve ring 2 is fixedly installed with the mounting outer ring 4, the outer side wall of the inner sleeve ring 1 is fixedly installed with the mounting inner ring 3, the mounting outer ring 4 and the mounting inner ring 3 are provided with the same support framework 5, the outer side wall of the support framework 5 is in sliding connection with the inner side wall of the mounting outer ring 4, and the inner side wall of the support framework 5 is in sliding connection with the outer side wall of the mounting inner ring 3; a plurality of circular grooves 12 are arranged in the support framework 5, and a plurality of circular balls 6 are rotatably installed in the circular grooves 12; the mute noise reduction assembly is arranged in the support framework 5 and is used for reducing noise of bearing rotation, and the mute noise reduction function is realized by relying on multi-level acoustic optimization design; the support framework 5 is internally integrated with the third sound-absorbing layer 9, the second sound-absorbing layer 8 and the first sound-absorbing layer 7 arranged from outside to inside in sequence, and the three-layer structure is fixedly formed into a composite noise reduction through welding, wherein the third sound-absorbing layer 9 made of silicon nitride ceramic material blocks external noise transmission by virtue of high-strength characteristics, the second sound-absorbing layer 8 made of polyformal material absorbs medium-frequency vibration noise through the damping characteristics of the material itself, and the first sound-absorbing layer 7 made of polyurea-based lubricating grease directly acts on a rolling contact surface of the circular ball 6, which not only provides lubrication to reduce friction and abnormal sound, but also can absorb high-frequency noise; meanwhile, the carburizing bearing steel fourth sound-absorbing layer 10 arranged in the inner sleeve ring 1 enhances structural stability to reduce vibration noise, the bearing steel and the diamond-like coating mixed material fifth sound-absorbing layer 11 adopted by the outer sleeve ring 2 further improves surface wear resistance and sound insulation effect, and the rubber mute rubber pad on the surface of the outer sleeve ring 2 and the circular ball 6 made of alloy material are respectively optimized from the aspects of external vibration buffering and rolling body wear-resistant noise reduction, so that the mute noise reduction effect in the bearing rotation process is realized through the full-chain design of friction form optimization, multi-layer material sound absorption and structure vibration suppression.

[0029] In the embodiment, the mute noise reduction assembly comprises the third sound-absorbing layer 9 arranged in the interior of the support framework 5, the interior of the third sound-absorbing layer 9 is provided with the second sound-absorbing layer 8, the interior of the second sound-absorbing layer 8 is provided with the first sound-absorbing layer 7, and the third sound-absorbing layer 9, the second sound-absorbing layer 8 and the first sound-absorbing layer 7 are fixedly connected through welding.

[0030] In this embodiment, the third sound-absorbing layer 9 is made of silicon nitride ceramic, the thickness of the third sound-absorbing layer 9 is 0.3mm-0.5mm, the second sound-absorbing layer 8 is made of polyformaldehyde, the thickness of the second sound-absorbing layer 8 is 0.1mm-0.3mm, the first sound-absorbing layer 7 is made of polyurea-based lubricating grease, the thickness of the first sound-absorbing layer 7 is 0.1mm-0.2mm, the third sound-absorbing layer 9 made of silicon nitride ceramic blocks the transmission of external noise due to its high strength characteristics, the second sound-absorbing layer 8 made of polyformaldehyde absorbs mid-frequency vibration noise through the damping characteristics of the material itself, and the first sound-absorbing layer 7 made of polyurea-based lubricating grease directly acts on the rolling contact surface of the ball 6, which not only provides lubrication to reduce friction and abnormal sound, but also can absorb high-frequency noise.

[0031] In this embodiment, the fourth sound-absorbing layer 10 is arranged in the inner race 1, the fourth sound-absorbing layer 10 is made of carburized bearing steel, and the thickness of the fourth sound-absorbing layer 10 is 0.5mm-0.7mm. The carburized bearing steel fourth sound-absorbing layer 10 built in the inner race 1 enhances the structural stability to reduce vibration noise.

[0032] In this embodiment, the fifth sound-absorbing layer 11 is arranged in the outer race 2, the fifth sound-absorbing layer 11 is made of a mixed material of bearing steel and diamond-like carbon coating, and the thickness of the fifth sound-absorbing layer 11 is 0.3mm-0.5mm. The bearing steel and diamond-like carbon coating mixed material fifth sound-absorbing layer 11 of the outer race 2 further improves the surface wear resistance and sound insulation effect.

[0033] In this embodiment, a plurality of circular grooves 12 are matched with a plurality of balls 6 to prevent the balls 6 from shifting in position when rotating.

[0034] In this embodiment, the surface of the outer race 2 is provided with a rubber silent rubber pad, which can effectively reduce part of the noise.

[0035] In this embodiment, the plurality of balls 6 are all made of alloy material, which can improve the hardness and wear resistance of the balls 6, thereby prolonging the service life of the balls 6.

[0036] The mute noise reduction type ball bearing of the embodiment is used, and the mute noise reduction function is realized by relying on multi-level acoustic optimization design, the third sound insulation layer 9, the second sound insulation layer 8 and the first sound insulation layer 7 are integrated in the support framework 5 from outside to inside, the three-layer structure is fixed by welding to form a composite noise reduction, wherein the third sound insulation layer 9 made of silicon nitride ceramic material blocks the transmission of external noise by virtue of high strength characteristics, the second sound insulation layer 8 made of polyformal material absorbs the medium frequency vibration noise through the damping characteristics of the material itself, and the first sound insulation layer 7 made of polyurea-based lubricating grease directly acts on the rolling contact surface of the ball 6, which not only provides lubrication to reduce friction noise, but also can absorb high-frequency noise, at the same time, the carburizing bearing steel fourth sound insulation layer 10 built in the inner ring 1 enhances the structural stability to reduce vibration noise, the bearing steel and the diamond-like coating mixed material fifth sound insulation layer 11 of the outer ring 2 further improves the surface wear resistance and sound insulation effect, the rubber mute rubber pad on the surface of the outer ring 2 and the ball 6 made of alloy material respectively assist optimization from the aspects of external vibration buffering and rolling body wear resistance noise reduction, finally, through the whole chain design of friction form optimization, multi-layer material sound absorption and structure vibration suppression, the mute noise reduction effect in the bearing rotating process is realized.

[0037] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A silent noise-reducing ball bearing, characterized in that, The utility model relates to a bearing, which comprises: An outer sleeve (2) is internally provided with an inner sleeve (1), an installation outer ring (4) is fixedly installed on the inner side wall of the outer sleeve (2), an installation inner ring (3) is fixedly installed on the outer side wall of the inner sleeve (1), and a same support framework (5) is arranged between the installation outer ring (4) and the installation inner ring (3), the outer side wall of the support framework (5) is in sliding connection with the inner side wall of the installation outer ring (4), and the inner side wall of the support framework (5) is in sliding connection with the outer side wall of the installation inner ring (3); A plurality of circular grooves (12) are arranged in the support framework (5), and a ball (6) is rotatably installed in each circular groove (12); A mute noise reduction assembly is arranged in the support framework (5) and used for reducing the noise of bearing rotation.

2. The silent noise-reducing ball bearing according to claim 1, wherein: The mute noise reduction assembly comprises a third sound-absorbing layer (9) arranged in the support framework (5), a second sound-absorbing layer (8) arranged in the third sound-absorbing layer (9), and a first sound-absorbing layer (7) arranged in the second sound-absorbing layer (8), and the third sound-absorbing layer (9), the second sound-absorbing layer (8) and the first sound-absorbing layer (7) are fixed by welding.

3. The silent noise-reducing ball bearing according to claim 2, wherein: The third sound-absorbing layer (9) is made of silicon nitride ceramic, has a thickness of 0.3mm-0.5mm, the second sound-absorbing layer (8) is made of polyformaldehyde, has a thickness of 0.1mm-0.3mm, the first sound-absorbing layer (7) is made of polyurea-based lubricating grease, and has a thickness of 0.1mm-0.2mm.

4. The silent noise-reducing ball bearing of claim 2, wherein: The inner sleeve (1) is internally provided with a fourth sound-absorbing layer (10) made of carburizing bearing steel and having a thickness of 0.5mm-0.7mm.

5. The silent noise-reducing ball bearing of claim 2, wherein: The outer sleeve (2) is internally provided with a fifth sound-absorbing layer (11) made of a mixture of bearing steel and diamond-like carbon coating and having a thickness of 0.3mm-0.5mm.

6. The silent noise-reducing ball bearing of claim 1, wherein: The plurality of circular grooves (12) are matched with the plurality of balls (6).

7. The silent noise-reducing ball bearing of claim 6, wherein: The surface of the outer sleeve (2) is provided with a rubber mute rubber pad.

8. The silent noise-reducing ball bearing of claim 6, wherein: The plurality of balls (6) are made of alloy material.

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