Bearing outer ring with damping function

Abstract

The utility model belongs to bearing technical field, concretely is a kind of bearing outer ring with shock-absorbing function, including outer ring body: composite shock-absorbing layer is coaxially sleeved in the outer side of outer ring body, protective shell is covered in the outer side of composite shock-absorbing layer;Composite shock-absorbing layer is made of polyurethane matrix and the spiral metal framework embedded in it.Concrete is provided with the utility model by the outer side of outer ring body composite shock-absorbing layer, can use polyurethane matrix and spiral metal framework provide better buffer, shock-absorbing effect, to reduce the vibration transmission on equipment that bearing receives, to ensure the normal operation and service life of equipment, by adding 5-8wt% silicon carbide particles in polyurethane matrix, can improve thermal conductivity, facilitate heat dissipation, while inhibiting high temperature softening, improve service life, by wave-shaped protrusion and dovetail groove, can increase the deformation space of polyurethane matrix, improve the peel strength, strengthen shock-absorbing effect.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a bearing outer ring with shock absorption function. Background Technology

[0002] During bearing operation, both the inner and outer rings may rotate, but depending on the transmission method, the speed and direction of rotation of the inner and outer rings will differ. Typically, in deep groove ball bearings, the inner ring rotates synchronously with the shaft, while in some bearings, the outer ring does not rotate because it is mounted on the housing, which does not participate in the rotational motion.

[0003] Most bearing outer rings are single-layer metal structures, which can easily transmit vibrations to the main body of the equipment under high-speed rotation or impact loads, resulting in decreased equipment accuracy and shortened lifespan. Although there are solutions to add external damping pads, these increase installation space and are prone to displacement. Therefore, there is an urgent need for an integrated bearing outer ring with integrated damping function. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A bearing outer ring with shock absorption function includes an outer ring body: a composite shock absorption layer is coaxially sleeved on the outer side of the outer ring body, and a protective shell covers the outer side of the composite shock absorption layer; the composite shock absorption layer is composed of a polyurethane matrix and a spiral metal skeleton embedded therein.

[0007] In a preferred embodiment, the present invention can be further configured such that 5-8 wt% of silicon carbide particles with a particle size of 10-20 μm are added to the polyurethane matrix.

[0008] In a preferred embodiment, the present invention can be further configured such that: the inner surface of the polyurethane matrix is ​​provided with wavy protrusions, and the outer surface of the polyurethane matrix is ​​provided with staggered dovetail grooves for bonding with the protective shell.

[0009] In a preferred embodiment, the present invention can be further configured such that the spiral metal skeleton is made of NiTiNb shape memory alloy wire with a diameter of 0.3-0.5 mm.

[0010] In a preferred embodiment, the present invention can be further configured such that: a limiting groove is formed on the outer side of the polyurethane matrix, and a limiting ring fixed inside the protective shell is fitted into the limiting groove.

[0011] In a preferred embodiment, the present invention can be further configured such that a positioning ring is provided on the side of the protective shell.

[0012] In a preferred embodiment, the present invention can be further configured such that a positioning groove that mates with the polyurethane matrix is ​​provided on the outer side of the outer ring body.

[0013] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0014] 1. This utility model provides a composite damping layer on the outer side of the outer ring body, which can provide better buffering and damping by utilizing the polyurethane matrix and spiral metal skeleton, thereby reducing the vibration transmitted from the bearing to the equipment, thus ensuring the normal operation and service life of the equipment.

[0015] 2. This utility model improves thermal conductivity and facilitates heat dissipation by adding 5-8 wt% silicon carbide particles to the polyurethane matrix, while also inhibiting high-temperature softening and extending service life.

[0016] 3. This utility model can increase the deformation space of the polyurethane matrix, improve the peel strength, and enhance the shock absorption effect by using wavy protrusions and dovetail grooves. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the bearing outer ring of this utility model;

[0018] Figure 2 This is a side sectional view of the bearing outer ring of this utility model;

[0019] Figure 3 This is an enlarged view of point A on the outer ring of the bearing of this utility model.

[0020] Figure label:

[0021] 1. Outer ring body; 11. Positioning groove;

[0022] 2. Composite damping layer; 21. Polyurethane matrix; 22. Spiral metal frame; 23. Wavy protrusion; 24. Dovetail groove; 25. Limiting groove; 26. Limiting ring; 27. Positioning ring;

[0023] 3. Protective outer casing. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0025] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0026] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a bearing outer ring with shock absorption function.

[0027] Combination Figure 1-3 As shown, the present invention provides a bearing outer ring with shock absorption function, comprising an outer ring body 1: a composite shock absorption layer 2 is coaxially sleeved on the outer side of the outer ring body 1, and a protective shell 3 covers the outer side of the composite shock absorption layer 2; the composite shock absorption layer 2 is composed of a polyurethane matrix 21 and a spiral metal skeleton 22 embedded therein. By setting the composite shock absorption layer 2 on the outer side of the outer ring body 1, the polyurethane matrix 21 and the spiral metal skeleton 22 can provide better buffering and shock absorption, thereby reducing the vibration transmitted from the bearing to the equipment, thus ensuring the normal operation and service life of the equipment.

[0028] Specifically, 5-8 wt% silicon carbide particles with a particle size of 10-20 μm are added to the polyurethane matrix 21. By adding 5-8 wt% silicon carbide particles to the polyurethane matrix 21, thermal conductivity can be improved, heat dissipation can be facilitated, and high-temperature softening can be suppressed, thereby extending service life.

[0029] Furthermore, the inner surface of the polyurethane matrix 21 is provided with wavy protrusions 23, and the outer surface of the polyurethane matrix 21 is provided with staggered dovetail grooves 24 to bond with the protective shell 3. Through the wavy protrusions 23 and the dovetail grooves 24, the deformation space of the polyurethane matrix 21 can be increased, the peel strength can be improved, and the shock absorption effect can be enhanced.

[0030] On the other hand, the spiral metal skeleton 22 is made of NiTiNb shape memory alloy wire with a diameter of 0.3-0.5mm, and the spiral spacing of the spiral metal skeleton 22 is 1.2-1.5 times the thickness of the damping layer. The phase transformation temperature is 80-120℃, which can resist compression below 80℃ and provide thermal expansion compensation after the ambient temperature exceeds 80℃, thereby ensuring the damping effect.

[0031] Furthermore, a limiting groove 25 is formed on the outer side of the polyurethane matrix 21, and a limiting ring 26 fixed inside the limiting groove 25 is fitted into the limiting groove 25, which can fix the protective shell 3 on the outer side of the polyurethane matrix 21 and ensure the stability between the structures.

[0032] It should be noted that the protective shell 3 is provided with a positioning ring 27 on its side, which can provide protection for the composite shock-absorbing layer 2 from the side, while ensuring its own stability.

[0033] Furthermore, the outer ring body 1 has a positioning groove 11 on its outer side that mates with the polyurethane matrix 21, which facilitates the placement of the composite damping layer 2 on the outer ring body 1.

[0034] The terms "fixed," "installed," "connected," "set up," "open," and "equipped" used in this specification to describe the position or relationship of components all refer to conventional physical connections or spatial configurations that can be understood and implemented by those skilled in the art based on the function of the relevant components, the context, and common knowledge. These relationships encompass, but are not limited to, specific forms such as welding, bonding, threaded fastening, snap-fit, interference fit, plug-in, sliding fit, hinge, integral molding, adjacent arrangement, and opening or slot accommodating. Their purpose is to clearly describe the relative position, fitting method, and functional implementation path between components, rather than limiting a single specific structural detail. To ensure a smooth and concise reading experience and ease of understanding, no separate explanation is provided after each corresponding term.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bearing outer ring with shock absorption function, comprising an outer ring body (1), characterized in that: The outer ring body (1) is coaxially fitted with a composite damping layer (2), and the outer side of the composite damping layer (2) is covered with a protective shell (3). The composite damping layer (2) is composed of a polyurethane matrix (21) and a spiral metal skeleton (22) embedded therein.

2. The bearing outer ring with shock absorbing function according to claim 1, characterized in that, The polyurethane matrix (21) contains 5-8 wt% silicon carbide particles with a particle size of 10-20 μm.

3. A bearing outer ring with shock absorption function according to claim 2, characterized in that, The inner surface of the polyurethane matrix (21) is provided with wavy protrusions (23), and the outer surface of the polyurethane matrix (21) is provided with staggered dovetail grooves (24) to bond with the protective shell (3).

4. A bearing outer ring with shock absorption function according to claim 1, characterized in that, The spiral metal skeleton (22) is made of NiTiNb shape memory alloy wire with a diameter of 0.3-0.5mm.

5. A bearing outer ring with shock absorption function according to claim 1, characterized in that, A limiting groove (25) is provided on the outer side of the polyurethane matrix (21), and a limiting ring (26) fixed inside the limiting groove (25) is fitted inside the protective shell (3).

6. A bearing outer ring with shock absorption function according to claim 5, characterized in that, The protective shell (3) is provided with a positioning ring (27) on its side.

7. A bearing outer ring with shock absorption function according to claim 1, characterized in that, The outer ring body (1) has a positioning groove (11) on its outer side that mates with the polyurethane matrix (21).

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